From 503534a506bd56ea21e1f970bf0ebcbe0c93b143 Mon Sep 17 00:00:00 2001 From: "goprife@gmail.com" Date: Sat, 23 Jun 2012 18:48:53 +0000 Subject: remove uffs/sr/test code to reduce size of source git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2179 bbd45198-f89e-11dd-88c7-29a3b14d5316 --- .../uffs/src/test/api_test/CMakeLists.txt | 37 - .../filesystems/uffs/src/test/api_test/api_test.c | 1168 - .../filesystems/uffs/src/test/api_test/api_test.h | 150 - .../uffs/src/test/api_test/api_test_client_posix.c | 125 - .../uffs/src/test/api_test/api_test_client_win32.c | 48 - .../src/test/api_test/api_test_client_wrapper.c | 81 - .../uffs/src/test/api_test/api_test_server_posix.c | 283 - .../uffs/src/test/api_test/api_test_server_win32.c | 194 - .../filesystems/uffs/src/test/api_test/os_uffs.c | 531 - .../filesystems/uffs/src/test/api_test/os_uffs.h | 46 - .../uffs/src/test/clients/CMakeLists.txt | 14 - .../filesystems/uffs/src/test/clients/example-2.c | 35 - 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api_test_server_posix.c) - SET (libapitest_client_SRCS ${libapitest_client_SRCS} api_test_client_posix.c) -ENDIF() - -IF (WIN32) - SET (libapitest_server_SRCS ${libapitest_server_SRCS} api_test_server_win32.c) - SET (libapitest_client_SRCS ${libapitest_client_SRCS} api_test_client_win32.c) -ENDIF() - -SET (libapitest_sqlite3_SRCS - ${libapitest_client_SRCS} - os_uffs.c - os_uffs.h - ) - -INCLUDE_DIRECTORIES(${uffs_SOURCE_DIR}/src/inc) -ADD_LIBRARY(apitest_server STATIC ${libapitest_server_SRCS}) -ADD_LIBRARY(apitest_client STATIC ${libapitest_client_SRCS}) -IF (UNIX) - ADD_LIBRARY(apitest_sqlite3 SHARED ${libapitest_sqlite3_SRCS}) -ENDIF() - - - diff --git a/components/dfs/filesystems/uffs/src/test/api_test/api_test.c b/components/dfs/filesystems/uffs/src/test/api_test/api_test.c deleted file mode 100644 index ea5c69bbb1..0000000000 --- a/components/dfs/filesystems/uffs/src/test/api_test/api_test.c +++ /dev/null @@ -1,1168 +0,0 @@ -/* -This file is part of UFFS, the Ultra-low-cost Flash File System. - -Copyright (C) 2005-2009 Ricky Zheng - -UFFS is free software; you can redistribute it and/or modify it under -the GNU Library General Public License as published by the Free Software -Foundation; either version 2 of the License, or (at your option) any -later version. - -UFFS is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -or GNU Library General Public License, as applicable, for more details. - -You should have received a copy of the GNU General Public License -and GNU Library General Public License along with UFFS; if not, write -to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, -Boston, MA 02110-1301, USA. - -As a special exception, if other files instantiate templates or use -macros or inline functions from this file, or you compile this file -and link it with other works to produce a work based on this file, -this file does not by itself cause the resulting work to be covered -by the GNU General Public License. However the source code for this -file must still be made available in accordance with section (3) of -the GNU General Public License v2. - -This exception does not invalidate any other reasons why a work based -on this file might be covered by the GNU General Public License. -*/ - -/** -* \file api_test.c -* \brief API test server public functions -* \author Ricky Zheng, created in 16 Dec, 2011 -*/ - -#include -#include -#include -#include -#include "uffs/uffs_crc.h" -#include "api_test.h" - -#define DEBUG - -#ifdef DEBUG -#define DBG printf -#else -#define DBG(...) -#endif - -static struct uffs_ApiSrvIoSt *m_io = NULL; -static int m_api_stat[UFFS_API_CMD_LAST + 1] = {0}; - -int apisrv_setup_io(struct uffs_ApiSrvIoSt *io) -{ - m_io = io; - return 0; -} - -// -// unload parameters from message. -// parameters list: -// param1, size1, param2, size2, ..., NULL -// size: maximum size of parameter. -// -static int apisrv_unload_params(struct uffs_ApiSrvMsgSt *msg, ...) -{ - int ret = 0; - int len, size; - u32 n; - u8 *p; - u8 *data; - struct uffs_ApiSrvHeaderSt *header = &msg->header; - - va_list args; - - va_start(args, msg); - - for (n = 0, data = msg->data; n < header->n_params; n++) { - p = va_arg(args, void *); - if (p == NULL) - break; - len = va_arg(args, int); - size = header->param_size[n]; - if (size > len) { - printf("cmd %d unload param %d overflow (max %d but %d)\n", - header->cmd, n, len, size); - ret = -1; - break; - } - memcpy(p, data, size); - data += size; - } - - if (n != header->n_params) { - printf("cmd %d unload params failed!\n", header->cmd); - ret = -1; - } - - if (data - msg->data != header->data_len) { - printf("cmd %d unload params failed! data len mismatched.\n", header->cmd); - ret = -1; - } - - va_end(args); - - return ret; -} - -// load response data. the parameter list: (¶m1, size1, ¶m2, size2, .... NULL) -static int apisrv_make_message(struct uffs_ApiSrvMsgSt *msg, ...) -{ - int ret = 0; - u32 n; - u32 len, size; - struct uffs_ApiSrvHeaderSt *header = &msg->header; - u8 *p; - u8 * params[UFFS_API_MAX_PARAMS]; - - va_list args; - - va_start(args, msg); - - for (n = 0, len = 0; n < UFFS_API_MAX_PARAMS; n++) { - p = va_arg(args, u8 *); - if (p == NULL) // terminator - break; - params[n] = p; - size = va_arg(args, size_t); - if (size > header->return_size[n]) { - printf("WARNING: cmd %d make message param %d expect %d but %d, truncated.\n", header->cmd, n, header->return_size[n], size); - size = header->return_size[n]; - } - header->param_size[n] = size; - len += header->param_size[n]; - } - header->n_params = n; - - va_end(args); - - // free buffer if already allocated. - if (msg->data) - free(msg->data); - - msg->data = (u8 *)malloc(len); - if (msg->data == NULL) { - printf("Fail to malloc %d bytes\n", len); - ret = -1; - goto ext; - } - header->data_len = len; - - for (n = 0, p = msg->data; n < header->n_params; n++) { - memcpy(p, params[n], header->param_size[n]); - p += header->param_size[n]; - } - -ext: - - return ret; -} - - -// calculate crc, send message. -static int apisrv_send_message(int fd, struct uffs_ApiSrvMsgSt *msg) -{ - int ret; - - msg->header.data_crc = uffs_crc16sum(msg->data, msg->header.data_len); - msg->header.header_crc = uffs_crc16sum(&msg->header, sizeof(struct uffs_ApiSrvHeaderSt)); - - ret = m_io->write(fd, &msg->header, sizeof(struct uffs_ApiSrvHeaderSt)); - if (ret < 0) { - perror("Sending header failed"); - } - else { - ret = m_io->write(fd, msg->data, msg->header.data_len); - if (ret < 0) { - perror("Sending data failed"); - } - } - - return ret; -} - -static int check_apisrv_header(struct uffs_ApiSrvHeaderSt *header) -{ - return 0; -} - -static int check_apisrv_msg(struct uffs_ApiSrvMsgSt *msg) -{ - return 0; -} - -static int apisrv_read_message(int fd, struct uffs_ApiSrvMsgSt *msg) -{ - int ret = -1; - struct uffs_ApiSrvHeaderSt *header = &msg->header; - u8 *data = NULL; - - memset(msg, 0, sizeof(struct uffs_ApiSrvMsgSt)); - ret = m_io->read(fd, header, sizeof(struct uffs_ApiSrvHeaderSt)); - if (ret < 0) { - printf("Read header failed!\n"); - goto ext; - } - - ret = check_apisrv_header(header); - if (ret < 0) - goto ext; - - if (header->data_len > 0) { - data = (u8 *)malloc(header->data_len); - if (data == NULL) { - printf("malloc %d bytes failed\n", header->data_len); - goto ext; - } - - msg->data = data; - ret = m_io->read(fd, data, header->data_len); - if (ret < 0) { - printf("read data failed\n"); - goto ext; - } - } - - ret = check_apisrv_msg(msg); - if (ret < 0) { - printf("check data CRC failed!\n"); - goto ext; - } - -ext: - return ret; -} - -static int apisrv_free_message(struct uffs_ApiSrvMsgSt *msg) -{ - if (msg && msg->data) { - free(msg->data); - msg->data = NULL; - } - - return 0; -} - -static int process_cmd(int sock, struct uffs_ApiSrvMsgSt *msg, struct uffs_ApiSt *api) -{ - struct uffs_ApiSrvHeaderSt *header = &msg->header; - int ret = 0; - char name[256]; - - //DBG("Received cmd = %d, params %d, data_len = %d\n", UFFS_API_CMD(header), header->n_params, header->data_len); - - switch(UFFS_API_CMD(header)) { - case UFFS_API_GET_VER_CMD: - { - int val; - val = api->uffs_version(); - DBG("uffs_version() = 0x%08x\n", val); - ret = apisrv_make_message(msg, &val, sizeof(val), NULL); - break; - } - case UFFS_API_OPEN_CMD: - { - int open_mode; - int fd; - ret = apisrv_unload_params(msg, -1, 0, name, sizeof(name), &open_mode, sizeof(open_mode), NULL); - if (ret == 0) { - fd = api->uffs_open(name, open_mode); - DBG("uffs_open(name = \"%s\", open_mode = 0x%x) = %d\n", name, open_mode, fd); - ret = apisrv_make_message(msg, &fd, sizeof(fd), -1, 0, -1, 0, NULL); - } - break; - } - case UFFS_API_CLOSE_CMD: - { - int fd, r; - ret = apisrv_unload_params(msg, -1, 0, &fd, sizeof(fd), NULL); - if (ret == 0) { - r = api->uffs_close(fd); - DBG("uffs_close(fd = %d) = %d\n", fd, r); - ret = apisrv_make_message(msg, &r, sizeof(r), -1, 0, NULL); - } - break; - } - case UFFS_API_READ_CMD: - { - int fd, r, len; - void *buf = NULL; - - ret = apisrv_unload_params(msg, -1, 0, &fd, sizeof(fd), -1, 0, &len, sizeof(len), NULL); - if (ret == 0) { - if (len > 0) { - buf = malloc(len); - if (buf == NULL) { - printf("malloc %d bytes failed.\n", len); - ret = -1; - } - } - - if (ret == 0) { - r = api->uffs_read(fd, buf, len); - DBG("uffs_read(fd = %d, buf = {...}, len = %d) = %d\n", fd, len, r); - ret = apisrv_make_message(msg, &r, sizeof(r), - -1, 0, /* fd */ - buf ? buf : (void *)-1, buf ? len : 0, /* buf */ - -1, 0, /* len */ - NULL); - } - } - - if (buf) - free(buf); - - break; - } - case UFFS_API_WRITE_CMD: - { - int fd, r, len; - void *buf = NULL; - - buf = malloc(header->data_len); - if (buf == NULL) { - printf("malloc %d failed.\n", header->data_len); - ret = -1; - } - else { - ret = apisrv_unload_params(msg, -1, 0, &fd, sizeof(fd), buf, header->data_len, &len, sizeof(len), NULL); - if (ret == 0) { - r = api->uffs_write(fd, buf, len); - DBG("uffs_write(fd = %d, buf = {...}, len = %d) = %d\n", fd, len, r); - ret = apisrv_make_message(msg, &r, sizeof(r), -1, 0, -1, 0, -1, 0, NULL); - } - free(buf); - } - - break; - } - case UFFS_API_FLUSH_CMD: - { - int fd, r; - - ret = apisrv_unload_params(msg, -1, 0, &fd, sizeof(fd), NULL); - if (ret == 0) { - r = api->uffs_flush(fd); - DBG("uffs_flush(fd = %d) = %d\n", fd, r); - ret = apisrv_make_message(msg, &r, sizeof(r), -1, 0, NULL); - } - - break; - } - case UFFS_API_SEEK_CMD: - { - int fd, origin; - i32 r, offset; - - ret = apisrv_unload_params(msg, -1, 0, &fd, sizeof(fd), &offset, sizeof(offset), &origin, sizeof(origin), NULL); - if (ret == 0) { - r = (i32) api->uffs_seek(fd, (long)offset, origin); - DBG("uffs_seek(fd = %d, offset = %d, origin = %d) = %d\n", fd, offset, origin, r); - ret = apisrv_make_message(msg, &r, sizeof(r), -1, 0, -1, 0, -1, 0, NULL); - } - - break; - } - case UFFS_API_TELL_CMD: - { - int fd; - i32 r; - - ret = apisrv_unload_params(msg, -1, 0, &fd, sizeof(fd), NULL); - if (ret == 0) { - r = (i32) api->uffs_tell(fd); - DBG("uffs_tell(fd = %d) = %d\n", fd, r); - ret = apisrv_make_message(msg, &r, sizeof(r), -1, 0, NULL); - } - break; - } - case UFFS_API_EOF_CMD: - { - int fd, r; - - ret = apisrv_unload_params(msg, -1, 0, &fd, sizeof(fd), NULL); - if (ret == 0) { - r = api->uffs_eof(fd); - DBG("uffs_eof(fd = %d) = %d\n", fd, r); - ret = apisrv_make_message(msg, &r, sizeof(r), -1, 0, NULL); - } - break; - } - case UFFS_API_RENAME_CMD: - { - int r; - char *oldname = NULL; - char *newname = NULL; - - oldname = (char *)malloc(header->data_len); - newname = (char *)malloc(header->data_len); - - if (oldname && newname) { - ret = apisrv_unload_params(msg, -1, 0, oldname, header->data_len, newname, header->data_len, NULL); - if (ret == 0) { - r = api->uffs_rename(oldname, newname); - DBG("uffs_rename(old = \"%s\", new = \"%s\") = %d\n", oldname, newname, r); - ret = apisrv_make_message(msg, &r, sizeof(r), -1, 0, -1, 0, NULL); - } - } - else { - printf("malloc %d bytes failed.\n", header->data_len); - ret = -1; - } - - if (oldname) - free(oldname); - if (newname) - free(newname); - - break; - } - case UFFS_API_REMOVE_CMD: - { - int r; - - ret = apisrv_unload_params(msg, -1, 0, name, sizeof(name), NULL); - if (ret == 0) { - r = api->uffs_remove(name); - DBG("uffs_remove(name = \"%s\") = %d\n", name, r); - ret = apisrv_make_message(msg, &r, sizeof(r), -1, 0, NULL); - } - break; - } - case UFFS_API_FTRUNCATE_CMD: - { - int fd, r; - i32 remain; - - ret = apisrv_unload_params(msg, -1, 0, &fd, sizeof(fd), &remain, sizeof(remain), NULL); - if (ret == 0) { - r = api->uffs_ftruncate(fd, (long)remain); - DBG("uffs_ftruncate(fd = %d, remain = %d) = %d\n", fd, remain, r); - ret = apisrv_make_message(msg, &r, sizeof(r), -1, 0, -1, 0, NULL); - } - break; - } - case UFFS_API_MKDIR_CMD: - { - int r; - - ret = apisrv_unload_params(msg, -1, 0, name, sizeof(name), NULL); - if (ret == 0) { - r = api->uffs_mkdir(name); - DBG("uffs_mkdir(name = \"%s\") = %d\n", name, r); - ret = apisrv_make_message(msg, &r, sizeof(r), -1, 0, NULL); - } - break; - } - case UFFS_API_RMDIR_CMD: - { - int r; - - ret = apisrv_unload_params(msg, -1, 0, name, sizeof(name), NULL); - if (ret == 0) { - r = api->uffs_rmdir(name); - DBG("uffs_rmdir(name= \"%s\") = %d\n", name, r); - ret = apisrv_make_message(msg, &r, sizeof(r), -1, 0, NULL); - } - break; - } - case UFFS_API_STAT_CMD: - case UFFS_API_LSTAT_CMD: - { - struct uffs_stat buf; - int r; - - ret = apisrv_unload_params(msg, -1, 0, name, sizeof(name), -1, 0, NULL); - if (ret == 0) { - r = api->uffs_stat(name, &buf); - DBG("uffs_stat(name = \"%s\", buf = {...}) = %d\n", name, r); - ret = apisrv_make_message(msg, &r, sizeof(r), -1, 0, &buf, sizeof(struct uffs_stat), NULL); - } - break; - } - case UFFS_API_FSTAT_CMD: - { - int fd, r; - struct uffs_stat buf; - - ret = apisrv_unload_params(msg, -1, 0, &fd, sizeof(fd), -1, 0, NULL); - if (ret == 0) { - r = api->uffs_fstat(fd, &buf); - DBG("uffs_fstat(fd = %d, buf = {...}) = %d\n", fd, r); - ret = apisrv_make_message(msg, &r, sizeof(r), -1, 0, &buf, sizeof(struct uffs_stat), NULL); - } - break; - } - case UFFS_API_OPEN_DIR_CMD: - { - uffs_DIR *dirp; - - ret = apisrv_unload_params(msg, -1, 0, name, sizeof(name), NULL); - if (ret == 0) { - dirp = api->uffs_opendir(name); - DBG("uffs_opendir(name = \"%s\") = %p\n", name, dirp); - ret = apisrv_make_message(msg, &dirp, sizeof(uffs_DIR *), -1, 0, NULL); - } - break; - } - case UFFS_API_CLOSE_DIR_CMD: - { - uffs_DIR *dirp; - int r; - - ret = apisrv_unload_params(msg, -1, 0, &dirp, sizeof(uffs_DIR *), NULL); - if (ret == 0) { - r = api->uffs_closedir(dirp); - DBG("uffs_closedir(dirp = %p) = %d\n", dirp, r); - ret = apisrv_make_message(msg, &r, sizeof(r), -1, 0, NULL); - } - break; - } - case UFFS_API_READ_DIR_CMD: - { - uffs_DIR *dirp; - struct uffs_dirent *dent; - - ret = apisrv_unload_params(msg, -1, 0, &dirp, sizeof(uffs_DIR *), NULL); - if (ret == 0) { - dent = api->uffs_readdir(dirp); - DBG("uffs_readdir(dirp = %p) = %s\n", dirp, dent ? "{...}" : "NULL"); - ret = apisrv_make_message(msg, dent, sizeof(struct uffs_dirent), -1, 0, NULL); - } - break; - } - case UFFS_API_REWIND_DIR_CMD: - { - uffs_DIR *dirp; - - ret = apisrv_unload_params(msg, -1, 0, &dirp, sizeof(uffs_DIR *), NULL); - if (ret == 0) { - api->uffs_rewinddir(dirp); - DBG("uffs_rewinddir(dirp = %p)\n", dirp); - ret = apisrv_make_message(msg, 0, -1, 0, -1, NULL); - } - break; - } - case UFFS_API_GET_ERR_CMD: - { - int r; - - r = api->uffs_get_error(); - DBG("uffs_get_error() = %d\n", r); - ret = apisrv_make_message(msg, &r, sizeof(r), NULL); - - break; - } - case UFFS_API_SET_ERR_CMD: - { - int err, r; - - ret = apisrv_unload_params(msg, -1, 0, &err, sizeof(err), NULL); - if (ret == 0) { - r = api->uffs_set_error(err); - DBG("uffs_set_error(err = %d) = %d\n", err, r); - ret = apisrv_make_message(msg, &r, sizeof(r), -1, 0, NULL); - } - break; - } - case UFFS_API_FORMAT_CMD: - { - int r; - - ret = apisrv_unload_params(msg, -1, 0, name, sizeof(name), NULL); - if (ret == 0) { - r = api->uffs_format(name); - DBG("uffs_format(mount = \"%s\") = %d\n", name, r); - ret = apisrv_make_message(msg, &r, sizeof(r), -1, 0, NULL); - } - break; - } - case UFFS_API_SPACE_TOTAL_CMD: - { - i32 r; - - ret = apisrv_unload_params(msg, -1, 0, name, sizeof(name), NULL); - if (ret == 0) { - r = (i32) api->uffs_space_total(name); - DBG("uffs_space_total(mount = \"%s\") = %d\n", name, r); - ret = apisrv_make_message(msg, &r, sizeof(r), -1, 0, NULL); - } - break; - } - case UFFS_API_SPACE_FREE_CMD: - { - i32 r; - - ret = apisrv_unload_params(msg, -1, 0, name, sizeof(name), NULL); - if (ret == 0) { - r = (i32) api->uffs_space_free(name); - DBG("uffs_space_free(mount = \"%s\") = %d\n", name, r); - ret = apisrv_make_message(msg, &r, sizeof(r), -1, 0, NULL); - } - break; - } - case UFFS_API_SPACE_USED_CMD: - { - i32 r; - - ret = apisrv_unload_params(msg, -1, 0, name, sizeof(name), NULL); - if (ret == 0) { - r = (i32) api->uffs_space_used(name); - DBG("uffs_space_used(mount = \"%s\") = %d\n", name, r); - ret = apisrv_make_message(msg, &r, sizeof(r), -1, 0, NULL); - } - break; - } - case UFFS_API_FLUSH_ALL_CMD: - { - ret = apisrv_unload_params(msg, -1, 0, name, sizeof(name), NULL); - if (ret == 0) { - api->uffs_flush_all(name); - DBG("uffs_flush_all(mount = \"%s\")\n", name); - ret = apisrv_make_message(msg, -1, 0, -1, 0, NULL); - } - break; - } - default: - printf("Unknown command %x\n", header->cmd); - ret = -1; - break; - } - - if (ret == 0) { - // we might need a mutex here if we using multi-thread server, - // but this probably ok since it just for statistic purpose. - m_api_stat[UFFS_API_CMD(header)]++; - } - - if (ret == 0) - ret = apisrv_send_message(sock, msg); - - return ret; -} - -int apisrv_serve(int fd, struct uffs_ApiSt *api) -{ - int ret = 0; - struct uffs_ApiSrvMsgSt msg; - - ret = apisrv_read_message(fd, &msg); - - if (ret == 0) - ret = process_cmd(fd, &msg, api); - - apisrv_free_message(&msg); - - return ret; -} - -void apisrv_print_stat(void) -{ - int i; - printf("--- API call stat ---\n"); - for (i = 0; i <= UFFS_API_CMD_LAST; i++) { - printf("API %2d: %d\n", i, m_api_stat[i]); - } - printf("--- END ---\n"); -} - -/** - * variable parameters list: - * &ret, size_ret, return_size_ret, ¶m1, size_param1, return_size_param1, ¶m2, size_param2, return_size_param2... NULL - **/ -static int call_remote(int cmd, ...) -{ - struct uffs_ApiSrvMsgSt msg; - struct uffs_ApiSrvHeaderSt *header = &msg.header; - int ret = -1, fd = -1; - u32 n = 0; - u8 *p; - u32 len, size; - u8 * params[UFFS_API_MAX_PARAMS]; - u32 return_size[UFFS_API_MAX_PARAMS]; - u32 n_params = 0; - va_list args; - - memset(&msg, 0, sizeof(struct uffs_ApiSrvMsgSt)); - - fd = m_io->open(m_io->addr); - if (fd < 0) - goto ext; - - header->cmd = cmd; - - // parse tparameter list - va_start(args, cmd); - for (n = 0, len = 0; n < UFFS_API_MAX_PARAMS; n++) { - p = va_arg(args, u8 *); - if (p == NULL) - break; - params[n] = p; - size = va_arg(args, int); - header->param_size[n] = size; - header->return_size[n] = va_arg(args, int); - return_size[n] = header->return_size[n]; - len += size; - } - va_end(args); - - n_params = n; - header->n_params = n; - //DBG("C: cmd %d, params %d, data_len %d\n", cmd, n, len); - - msg.data = (u8 *) malloc(len); - if (msg.data == NULL) { - printf("Fail to malloc %d bytes\n", len); - goto ext; - } - header->data_len = len; - - // now, load parameters - for (n = 0, len = 0; n < n_params; n++) { - if (header->param_size[n] > 0) { - memcpy(msg.data + len, params[n], header->param_size[n]); - len += header->param_size[n]; - } - } - - // send - ret = apisrv_send_message(fd, &msg); - if (ret < 0) - goto ext; - - // free data pointer - apisrv_free_message(&msg); - - // receive response - ret = apisrv_read_message(fd, &msg); - if (ret < 0) - goto ext; - - if (header->n_params != n_params) { - printf("Response %d parameters but expect %d\n", header->n_params, n_params); - ret = -1; - goto ext; - } - - // now, unload return parameters - for (n = 0, p = msg.data; n < header->n_params; n++) { - size = header->param_size[n]; - if (return_size[n] != header->return_size[n]) { - printf("WARNING: cmd %d param %d return size not kept ? expect %d but %d\n", header->cmd, n, return_size[n], header->return_size[n]); - } - memcpy(params[n], p, size > return_size[n] ? return_size[n] : size); - if (size > return_size[n]) { - printf("WARNING: cmd %d return param %d overflow, expect %d but %d\n", header->cmd, n, return_size[n], size); - } - p += size; - } - -ext: - apisrv_free_message(&msg); - if (fd >= 0) - m_io->close(fd); - - return ret; - -} - -static int _uffs_version(void) -{ - int version = 0; - int ret = -1; - - ret = call_remote(UFFS_API_GET_VER_CMD, &version, 0, sizeof(version), NULL); - - return ret < 0 ? 0 : version; -} - -static int _uffs_open(const char *name, int oflag, ...) -{ - int fd = -1; - int ret = -1; - - ret = call_remote(UFFS_API_OPEN_CMD, &fd, 0, sizeof(fd), - name, strlen(name) + 1, 0, - &oflag, sizeof(oflag), 0, - NULL); - - return ret < 0 ? ret : fd; -} - -static int _uffs_close(int fd) -{ - int r = -1; - int ret = -1; - - ret = call_remote(UFFS_API_CLOSE_CMD, &r, 0, sizeof(r), &fd, sizeof(fd), 0, NULL); - - return ret < 0 ? ret : r; -} - -static int _uffs_read(int fd, void *buf, int len) -{ - int r = -1, ret = -1; - - if (buf) { - ret = call_remote(UFFS_API_READ_CMD, &r, 0, sizeof(r), - &fd, sizeof(fd), 0, - buf, 0, len, - &len, sizeof(len), 0, - NULL); - } - - return ret < 0 ? ret : r; -} - -static int _uffs_write(int fd, const void *buf, int len) -{ - int r = -1, ret = -1; - - if (buf) { - ret = call_remote(UFFS_API_WRITE_CMD, &r, 0, sizeof(r), - &fd, sizeof(fd), 0, - buf, len, 0, - &len, sizeof(len), 0, - NULL); - } - - return ret < 0 ? ret : r; -} - -static int _uffs_flush(int fd) -{ - int r = -1, ret = -1; - - ret = call_remote(UFFS_API_FLUSH_CMD, &r, 0, sizeof(r), - &fd, sizeof(fd), 0, - NULL); - - return ret < 0 ? ret : r; -} - -static long _uffs_seek(int fd, long offset, int origin) -{ - i32 r_32bit = -1; - int ret = -1; - - i32 offset_32bit = (i32)offset; - - ret = call_remote(UFFS_API_SEEK_CMD, &r_32bit, 0, sizeof(r_32bit), - &fd, sizeof(fd), 0, - &offset_32bit, sizeof(offset_32bit), 0, // only send 32bit over the network - &origin, sizeof(origin), 0, - NULL); - - return ret < 0 ? -1L : (long)r_32bit; -} - -static long _uffs_tell(int fd) -{ - int ret = -1; - i32 r_32bit = -1; - - ret = call_remote(UFFS_API_TELL_CMD, &r_32bit, 0, sizeof(r_32bit), - &fd, sizeof(fd), 0, - NULL); - - return ret < 0 ? -1L : (long)r_32bit; -} - -static int _uffs_eof(int fd) -{ - int r = -1, ret = -1; - - ret = call_remote(UFFS_API_EOF_CMD, &r, 0, sizeof(r), - &fd, sizeof(fd), 0, - NULL); - - return ret < 0 ? ret : r; -} - -static int _uffs_rename(const char *oldname, const char *newname) -{ - int r = -1, ret = -1; - - if (oldname && newname) { - ret = call_remote(UFFS_API_RENAME_CMD, &r, 0, sizeof(r), - oldname, strlen(oldname) + 1, 0, - newname, strlen(newname) + 1, 0, - NULL); - } - - return ret < 0 ? ret : r; -} - -static int _uffs_remove(const char *name) -{ - int ret = -1, r = -1; - - if (name) { - ret = call_remote(UFFS_API_REMOVE_CMD, &r, 0, sizeof(r), - name, strlen(name) + 1, 0, - NULL); - } - - return ret < 0 ? ret : r; -} - -static int _uffs_ftruncate(int fd, long remain) -{ - int r = -1, ret = -1; - i32 remain_32bit = (i32)remain; - - ret = call_remote(UFFS_API_FTRUNCATE_CMD, &r, 0, sizeof(r), - &fd, sizeof(fd), 0, - &remain_32bit, sizeof(remain_32bit), 0, - NULL); - - return ret < 0 ? ret : r; -} - -static int _uffs_mkdir(const char *name, ...) -{ - int r = -1, ret = -1; - - if (name) { - ret = call_remote(UFFS_API_MKDIR_CMD, &r, 0, sizeof(r), - name, strlen(name) + 1, 0, - NULL); - } - - return ret < 0 ? ret : r; -} - -static int _uffs_rmdir(const char *name) -{ - int r = -1, ret = -1; - - if (name) { - ret = call_remote(UFFS_API_RMDIR_CMD, &r, 0, sizeof(r), - name, strlen(name) + 1, 0, - NULL); - } - - return ret < 0 ? ret : r; -} - -static int _uffs_stat(const char *name, struct uffs_stat *buf) -{ - int r = -1, ret = -1; - - if (name && buf) { - ret = call_remote(UFFS_API_STAT_CMD, &r, 0, sizeof(r), - name, strlen(name) + 1, 0, - buf, 0, sizeof(struct uffs_stat), - NULL); - } - - return ret < 0 ? ret : r; -} - -static int _uffs_lstat(const char *name, struct uffs_stat *buf) -{ - int r = -1, ret = -1; - - if (name && buf) { - ret = call_remote(UFFS_API_LSTAT_CMD, &r, 0, sizeof(r), - name, strlen(name) + 1, 0, - buf, 0, sizeof(struct uffs_stat), - NULL); - } - - return ret < 0 ? ret : r; -} - -static int _uffs_fstat(int fd, struct uffs_stat *buf) -{ - int r = -1, ret = -1; - - if (buf) { - ret = call_remote(UFFS_API_FSTAT_CMD, &r, 0, sizeof(r), - &fd, sizeof(fd), 0, - buf, 0, sizeof(struct uffs_stat), - NULL); - } - - return ret < 0 ? ret : r; -} - -static uffs_DIR * _uffs_opendir(const char *path) -{ - uffs_DIR *dirp = NULL; - int ret = -1; - - if (path) { - ret = call_remote(UFFS_API_OPEN_DIR_CMD, &dirp, 0, sizeof(uffs_DIR *), - path, strlen(path) + 1, 0, - NULL); - } - - return ret < 0 ? NULL : dirp; -} - -static int _uffs_closedir(uffs_DIR *dirp) -{ - int r = -1, ret = -1; - - if (dirp) { - ret = call_remote(UFFS_API_CLOSE_DIR_CMD, &r, 0, sizeof(r), - &dirp, sizeof(uffs_DIR *), 0, - NULL); - } - - return ret < 0 ? ret : r; -} - -/** - * Note: this is not a thread-safe but we have advantage of not calling 'free' after ... - */ -static struct uffs_dirent * _uffs_readdir(uffs_DIR *dirp) -{ - static struct uffs_dirent dirent_cache[256]; - static unsigned char pos = 0; - - int ret = -1; - struct uffs_dirent *dent = NULL; - - if (dirp) { - dent = &dirent_cache[pos++]; // change 'pos++' to atomic can make this function thread-safe... - ret = call_remote(UFFS_API_READ_DIR_CMD, dent, 0, sizeof(struct uffs_dirent), - &dirp, sizeof(uffs_DIR *), 0, - NULL); - } - - return ret < 0 ? NULL : dent; -} - -static void _uffs_rewinddir(uffs_DIR *dirp) -{ - if (dirp) { - call_remote(UFFS_API_REWIND_DIR_CMD, -1, 0, 0, - &dirp, sizeof(uffs_DIR *), 0, - NULL); - } -} - -static int _uffs_get_error(void) -{ - int r = -1, ret = -1; - - ret = call_remote(UFFS_API_GET_ERR_CMD, &r, 0, sizeof(r), NULL); - - return ret < 0 ? ret : r; -} - -static int _uffs_set_error(int err) -{ - int r = -1, ret = -1; - - ret = call_remote(UFFS_API_SET_ERR_CMD, &r, 0, sizeof(r), - &err, sizeof(err), 0, - NULL); - - return ret < 0 ? ret : r; -} - -static int _uffs_format(const char *mount) -{ - int r = -1, ret = -1; - - if (mount) - ret = call_remote(UFFS_API_FORMAT_CMD, &r, 0, sizeof(r), - mount, strlen(mount) + 1, 0, - NULL); - - return ret < 0 ? ret : r; -} - -static long _uffs_space_total(const char *mount) -{ - i32 r_32bit = -1; - int ret = -1; - - if (mount) - ret = call_remote(UFFS_API_SPACE_TOTAL_CMD, &r_32bit, 0, sizeof(r_32bit), - mount, strlen(mount) + 1, 0, - NULL); - - return ret < 0 ? -1L : (long)r_32bit; -} - -static long _uffs_space_used(const char *mount) -{ - i32 r_32bit = -1; - int ret = -1; - - if (mount) - ret = call_remote(UFFS_API_SPACE_USED_CMD, &r_32bit, 0, sizeof(r_32bit), - mount, strlen(mount) + 1, 0, - NULL); - - return ret < 0 ? -1L : (long)r_32bit; -} - -static long _uffs_space_free(const char *mount) -{ - i32 r_32bit = -1; - int ret = -1; - - if (mount) - ret = call_remote(UFFS_API_SPACE_FREE_CMD, &r_32bit, 0, sizeof(r_32bit), - mount, strlen(mount) + 1, 0, - NULL); - - return ret < 0 ? -1L : (long)r_32bit; -} - -static void _uffs_flush_all(const char *mount) -{ - if (mount) { - call_remote(UFFS_API_FLUSH_ALL_CMD, -1, 0, 0, - mount, strlen(mount) + 1, 0, - NULL); - } -} - - -static struct uffs_ApiSt m_client_api = { - _uffs_version, - _uffs_open, - _uffs_close, - _uffs_read, - _uffs_write, - _uffs_flush, - _uffs_seek, - _uffs_tell, - _uffs_eof, - _uffs_rename, - _uffs_remove, - _uffs_ftruncate, - _uffs_mkdir, - _uffs_rmdir, - _uffs_stat, - _uffs_lstat, - _uffs_fstat, - _uffs_opendir, - _uffs_closedir, - _uffs_readdir, - _uffs_rewinddir, - _uffs_get_error, - _uffs_set_error, - _uffs_format, - _uffs_space_total, - _uffs_space_used, - _uffs_space_free, - _uffs_flush_all, -}; - -struct uffs_ApiSt * apisrv_get_client(void) -{ - return &m_client_api; -} - diff --git a/components/dfs/filesystems/uffs/src/test/api_test/api_test.h b/components/dfs/filesystems/uffs/src/test/api_test/api_test.h deleted file mode 100644 index d0496291a8..0000000000 --- a/components/dfs/filesystems/uffs/src/test/api_test/api_test.h +++ /dev/null @@ -1,150 +0,0 @@ -/* - This file is part of UFFS, the Ultra-low-cost Flash File System. - - Copyright (C) 2005-2009 Ricky Zheng - - UFFS is free software; you can redistribute it and/or modify it under - the GNU Library General Public License as published by the Free Software - Foundation; either version 2 of the License, or (at your option) any - later version. - - UFFS is distributed in the hope that it will be useful, but WITHOUT - ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - or GNU Library General Public License, as applicable, for more details. - - You should have received a copy of the GNU General Public License - and GNU Library General Public License along with UFFS; if not, write - to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, - Boston, MA 02110-1301, USA. - - As a special exception, if other files instantiate templates or use - macros or inline functions from this file, or you compile this file - and link it with other works to produce a work based on this file, - this file does not by itself cause the resulting work to be covered - by the GNU General Public License. However the source code for this - file must still be made available in accordance with section (3) of - the GNU General Public License v2. - - This exception does not invalidate any other reasons why a work based - on this file might be covered by the GNU General Public License. -*/ - -/** - * \file api_srv.h - * \brief UFFS API test server definitions - * \author Ricky Zheng, created 16 Dec, 2011 - */ -#include "uffs/uffs_types.h" -#include "uffs/uffs_fd.h" - -#ifndef _UFFS_API_SRV_H_ -#define _UFFS_API_SRV_H_ - -#define SRV_PORT 9018 - -#define UFFS_API_GET_VER_CMD 0 -#define UFFS_API_OPEN_CMD 1 -#define UFFS_API_CLOSE_CMD 2 -#define UFFS_API_READ_CMD 3 -#define UFFS_API_WRITE_CMD 4 -#define UFFS_API_FLUSH_CMD 5 -#define UFFS_API_SEEK_CMD 6 -#define UFFS_API_TELL_CMD 7 -#define UFFS_API_EOF_CMD 8 -#define UFFS_API_RENAME_CMD 9 -#define UFFS_API_REMOVE_CMD 10 -#define UFFS_API_FTRUNCATE_CMD 11 -#define UFFS_API_MKDIR_CMD 12 -#define UFFS_API_RMDIR_CMD 13 -#define UFFS_API_STAT_CMD 14 -#define UFFS_API_LSTAT_CMD 15 -#define UFFS_API_FSTAT_CMD 16 -#define UFFS_API_OPEN_DIR_CMD 17 -#define UFFS_API_CLOSE_DIR_CMD 18 -#define UFFS_API_READ_DIR_CMD 19 -#define UFFS_API_REWIND_DIR_CMD 20 -#define UFFS_API_GET_ERR_CMD 21 -#define UFFS_API_SET_ERR_CMD 22 -#define UFFS_API_FORMAT_CMD 23 -#define UFFS_API_SPACE_TOTAL_CMD 24 -#define UFFS_API_SPACE_FREE_CMD 25 -#define UFFS_API_SPACE_USED_CMD 26 -#define UFFS_API_FLUSH_ALL_CMD 27 - -#define UFFS_API_CMD_LAST 27 // last test command id - -#define UFFS_API_CMD(header) ((header)->cmd & 0xFF) -#define UFFS_API_ACK_BIT (1 << 31) - -#define UFFS_API_MAX_PARAMS 8 - -struct uffs_ApiSrvMsgSt; - -struct uffs_ApiSrvHeaderSt { - u32 cmd; // command - u32 data_len; // data length - u32 n_params; // parameter numbers - u32 param_size[UFFS_API_MAX_PARAMS]; // parameter list - u32 return_size[UFFS_API_MAX_PARAMS]; // return parameter list - u16 data_crc; // data CRC16 - u16 header_crc; // header CRC16 -}; - -struct uffs_ApiSrvIoSt { - int (*open)(void *addr); - int (*read)(int fd, void *buf, int len); - int (*write)(int fd, const void *buf, int len); - int (*close)(int fd); - void *addr; -}; - -struct uffs_ApiSt { - int (*uffs_version)(void); - int (*uffs_open)(const char *name, int oflag, ...); - int (*uffs_close)(int fd); - int (*uffs_read)(int fd, void *data, int len); - int (*uffs_write)(int fd, const void *data, int len); - int (*uffs_flush)(int fd); - long (*uffs_seek)(int fd, long offset, int origin); - long (*uffs_tell)(int fd); - int (*uffs_eof)(int fd); - int (*uffs_rename)(const char *old_name, const char *new_name); - int (*uffs_remove)(const char *name); - int (*uffs_ftruncate)(int fd, long remain); - int (*uffs_mkdir)(const char *name, ...); - int (*uffs_rmdir)(const char *name); - int (*uffs_stat)(const char *name, struct uffs_stat *buf); - int (*uffs_lstat)(const char *name, struct uffs_stat *buf); - int (*uffs_fstat)(int fd, struct uffs_stat *buf); - uffs_DIR * (*uffs_opendir)(const char *path); - int (*uffs_closedir)(uffs_DIR *dirp); - struct uffs_dirent * (*uffs_readdir)(uffs_DIR *dirp); - void (*uffs_rewinddir)(uffs_DIR *dirp); - int (*uffs_get_error)(void); - int (*uffs_set_error)(int err); - int (*uffs_format)(const char *mount_point); - long (*uffs_space_total)(const char *mount_point); - long (*uffs_space_used)(const char *mount_point); - long (*uffs_space_free)(const char *mount_point); - void (*uffs_flush_all)(const char *mount_point); -}; - -struct uffs_ApiSrvMsgSt { - struct uffs_ApiSrvHeaderSt header; - u8 *data; -}; - -int apisrv_setup_io(struct uffs_ApiSrvIoSt *io); -int apisrv_serve(int fd, struct uffs_ApiSt *api); -void apisrv_print_stat(void); -struct uffs_ApiSt * apisrv_get_client(void); - -/* from api_test_server_{platform}.c */ -int api_server_start(void); - -/* from api_test_client_{platform}.c */ -int api_client_init(const char *server_addr); - -#endif - diff --git a/components/dfs/filesystems/uffs/src/test/api_test/api_test_client_posix.c b/components/dfs/filesystems/uffs/src/test/api_test/api_test_client_posix.c deleted file mode 100644 index 8f7821b266..0000000000 --- a/components/dfs/filesystems/uffs/src/test/api_test/api_test_client_posix.c +++ /dev/null @@ -1,125 +0,0 @@ -/* -This file is part of UFFS, the Ultra-low-cost Flash File System. - -Copyright (C) 2005-2009 Ricky Zheng - -UFFS is free software; you can redistribute it and/or modify it under -the GNU Library General Public License as published by the Free Software -Foundation; either version 2 of the License, or (at your option) any -later version. - -UFFS is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -or GNU Library General Public License, as applicable, for more details. - -You should have received a copy of the GNU General Public License -and GNU Library General Public License along with UFFS; if not, write -to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, -Boston, MA 02110-1301, USA. - -As a special exception, if other files instantiate templates or use -macros or inline functions from this file, or you compile this file -and link it with other works to produce a work based on this file, -this file does not by itself cause the resulting work to be covered -by the GNU General Public License. However the source code for this -file must still be made available in accordance with section (3) of -the GNU General Public License v2. - -This exception does not invalidate any other reasons why a work based -on this file might be covered by the GNU General Public License. -*/ - -/** -* \file api_test_client_posix.c -* \brief API test client functions -* \author Ricky Zheng, created in 20 Dec, 2011 -*/ - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "uffs/uffs_fd.h" -#include "api_test.h" - - -static int _io_read(int fd, void *buf, int len) -{ - return recv(fd, buf, len, MSG_WAITALL); -} - -static int _io_write(int fd, const void *buf, int len) -{ - return send(fd, buf, len, 0); -} - -static int _io_open(void *addr) -{ - int sock; - struct hostent *host; - struct sockaddr_in server_addr; - int port = SRV_PORT; - - host = gethostbyname((const char *)addr); - - if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1) { - perror("Socket"); - return -1; - } - - if (getenv("UFFS_TEST_SRV_PORT")) { - port = atoi(getenv("UFFS_TEST_SRV_PORT")); - } - - server_addr.sin_family = AF_INET; - server_addr.sin_port = htons(port); - server_addr.sin_addr = *((struct in_addr *)host->h_addr); - bzero(&(server_addr.sin_zero),8); - - if (connect(sock, (struct sockaddr *)&server_addr, - sizeof(struct sockaddr)) == -1) - { - perror("Connect"); - return -1; - } - - return sock; -} - -static int _io_close(int fd) -{ - return close(fd); -} - -static struct uffs_ApiSrvIoSt m_io = { - .open = _io_open, - .read = _io_read, - .write = _io_write, - .close = _io_close, - .addr = (void *)"127.0.0.1", -}; - -int api_client_init(const char *server_addr) -{ - static char addr[128] = {0}; - int ret = -1; - - if (server_addr == NULL) - server_addr = getenv("UFFS_TEST_SRV_ADDR"); - - if (server_addr && strlen(server_addr) < sizeof(addr)) { - strcpy(addr, server_addr); - m_io.addr = (void *)addr; - } - ret = apisrv_setup_io(&m_io); - - return ret; -} - diff --git a/components/dfs/filesystems/uffs/src/test/api_test/api_test_client_win32.c b/components/dfs/filesystems/uffs/src/test/api_test/api_test_client_win32.c deleted file mode 100644 index 5dd235051c..0000000000 --- a/components/dfs/filesystems/uffs/src/test/api_test/api_test_client_win32.c +++ /dev/null @@ -1,48 +0,0 @@ -/* - This file is part of UFFS, the Ultra-low-cost Flash File System. - - Copyright (C) 2005-2009 Ricky Zheng - - UFFS is free software; you can redistribute it and/or modify it under - the GNU Library General Public License as published by the Free Software - Foundation; either version 2 of the License, or (at your option) any - later version. - - UFFS is distributed in the hope that it will be useful, but WITHOUT - ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - or GNU Library General Public License, as applicable, for more details. - - You should have received a copy of the GNU General Public License - and GNU Library General Public License along with UFFS; if not, write - to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, - Boston, MA 02110-1301, USA. - - As a special exception, if other files instantiate templates or use - macros or inline functions from this file, or you compile this file - and link it with other works to produce a work based on this file, - this file does not by itself cause the resulting work to be covered - by the GNU General Public License. However the source code for this - file must still be made available in accordance with section (3) of - the GNU General Public License v2. - - This exception does not invalidate any other reasons why a work based - on this file might be covered by the GNU General Public License. -*/ - -/** - * \file api_test_client_win32.c - * \brief uffs API test client - * \author Ricky Zheng, 20 Dec 2011 - */ -#include -#include -#include "api_test.h" - -int api_client_init(const char *server_addr) -{ - printf("API test client not available on win32, stay tune ...\n"); - - return -1; -} - diff --git a/components/dfs/filesystems/uffs/src/test/api_test/api_test_client_wrapper.c b/components/dfs/filesystems/uffs/src/test/api_test/api_test_client_wrapper.c deleted file mode 100644 index dfe01bc419..0000000000 --- a/components/dfs/filesystems/uffs/src/test/api_test/api_test_client_wrapper.c +++ /dev/null @@ -1,81 +0,0 @@ -/* - This file is part of UFFS, the Ultra-low-cost Flash File System. - - Copyright (C) 2005-2009 Ricky Zheng - - UFFS is free software; you can redistribute it and/or modify it under - the GNU Library General Public License as published by the Free Software - Foundation; either version 2 of the License, or (at your option) any - later version. - - UFFS is distributed in the hope that it will be useful, but WITHOUT - ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - or GNU Library General Public License, as applicable, for more details. - - You should have received a copy of the GNU General Public License - and GNU Library General Public License along with UFFS; if not, write - to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, - Boston, MA 02110-1301, USA. - - As a special exception, if other files instantiate templates or use - macros or inline functions from this file, or you compile this file - and link it with other works to produce a work based on this file, - this file does not by itself cause the resulting work to be covered - by the GNU General Public License. However the source code for this - file must still be made available in accordance with section (3) of - the GNU General Public License v2. - - This exception does not invalidate any other reasons why a work based - on this file might be covered by the GNU General Public License. -*/ - -/** - * \file api_test_client_wrapper.c - * \brief API test client wrapper - * \author Ricky Zheng, created at 20 Dec, 2011 - */ - -#include "uffs/uffs_fd.h" -#include "api_test.h" - -#define W(R, F, T, P) \ - R F T \ - { \ - return apisrv_get_client()->F P ; \ - } - -#define VW(F, T, P) \ - void F T \ - { \ - apisrv_get_client()->F P ; \ - } - -W(int, uffs_version, (), ()) -W(int, uffs_open, (const char *name, int oflag, ...), (name, oflag)) -W(int, uffs_close, (int fd), (fd)) -W(int, uffs_read, (int fd, void *data, int len), (fd, data, len)) -W(int, uffs_write, (int fd, const void *data, int len), (fd, data, len)) -W(int, uffs_flush, (int fd), (fd)) -W(long, uffs_seek, (int fd, long offset, int origin), (fd, offset, origin)) -W(long, uffs_tell, (int fd), (fd)) -W(int, uffs_eof, (int fd), (fd)) -W(int, uffs_rename, (const char *oldname, const char *newname), (oldname, newname)) -W(int, uffs_remove, (const char *name), (name)) -W(int, uffs_ftruncate, (int fd, long remain), (fd, remain)) -W(int, uffs_mkdir, (const char *name, ...), (name)) -W(int, uffs_rmdir, (const char *name), (name)) -W(int, uffs_stat, (const char *name, struct uffs_stat *buf), (name, buf)) -W(int, uffs_lstat, (const char *name, struct uffs_stat *buf), (name, buf)) -W(int, uffs_fstat, (int fd, struct uffs_stat *buf), (fd, buf)) -W(uffs_DIR *, uffs_opendir, (const char *path), (path)) -W(int, uffs_closedir, (uffs_DIR *dirp), (dirp)) -W(struct uffs_dirent *, uffs_readdir, (uffs_DIR *dirp), (dirp)) -VW(uffs_rewinddir, (uffs_DIR *dirp), (dirp)) -W(int, uffs_get_error, (void), ()) -W(int, uffs_set_error, (int err), (err)) -W(int, uffs_format, (const char *mount), (mount)) -W(long, uffs_space_total, (const char *mount), (mount)) -W(long, uffs_space_used, (const char *mount), (mount)) -W(long, uffs_space_free, (const char *mount), (mount)) -VW(uffs_flush_all, (const char *mount), (mount)) diff --git a/components/dfs/filesystems/uffs/src/test/api_test/api_test_server_posix.c b/components/dfs/filesystems/uffs/src/test/api_test/api_test_server_posix.c deleted file mode 100644 index 39f17257c4..0000000000 --- a/components/dfs/filesystems/uffs/src/test/api_test/api_test_server_posix.c +++ /dev/null @@ -1,283 +0,0 @@ -/* - This file is part of UFFS, the Ultra-low-cost Flash File System. - - Copyright (C) 2005-2009 Ricky Zheng - - UFFS is free software; you can redistribute it and/or modify it under - the GNU Library General Public License as published by the Free Software - Foundation; either version 2 of the License, or (at your option) any - later version. - - UFFS is distributed in the hope that it will be useful, but WITHOUT - ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - or GNU Library General Public License, as applicable, for more details. - - You should have received a copy of the GNU General Public License - and GNU Library General Public License along with UFFS; if not, write - to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, - Boston, MA 02110-1301, USA. - - As a special exception, if other files instantiate templates or use - macros or inline functions from this file, or you compile this file - and link it with other works to produce a work based on this file, - this file does not by itself cause the resulting work to be covered - by the GNU General Public License. However the source code for this - file must still be made available in accordance with section (3) of - the GNU General Public License v2. - - This exception does not invalidate any other reasons why a work based - on this file might be covered by the GNU General Public License. -*/ - -/** - * \file api_test_server_posix.c - * \brief uffs API test server. - * \author Ricky Zheng - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "uffs/uffs_os.h" -#include "uffs/uffs_public.h" -#include "uffs/uffs_fs.h" -#include "uffs/uffs_utils.h" -#include "uffs/uffs_core.h" -#include "uffs/uffs_mtb.h" -#include "uffs/uffs_crc.h" -#include "uffs/uffs_fd.h" -#include "uffs/uffs_version.h" -#include "api_test.h" - -#define PFX NULL - -#define BACKLOGS 100 - -#define WORKER_THREAD_NUM 10 - -#define WORKER_FIFO_SIZE 30 -static pthread_mutex_t m_fifo_lock = PTHREAD_MUTEX_INITIALIZER; -static pthread_cond_t m_fifo_space_avail = PTHREAD_COND_INITIALIZER; -static pthread_cond_t m_fifo_fd_avail = PTHREAD_COND_INITIALIZER; -static int m_fifo[WORKER_FIFO_SIZE]; -static int m_fifo_head = 0; -static int m_fifo_tail = 0; - -static int m_thread_stat[WORKER_THREAD_NUM]; - -static void push_fifo(int fd) -{ - pthread_mutex_lock(&m_fifo_lock); - if (((m_fifo_head + 1) % WORKER_FIFO_SIZE) != m_fifo_tail) { - m_fifo[m_fifo_head++] = fd; - m_fifo_head = m_fifo_head % WORKER_FIFO_SIZE; - pthread_cond_signal(&m_fifo_fd_avail); - } - else { - pthread_cond_wait(&m_fifo_space_avail, &m_fifo_lock); - } - pthread_mutex_unlock(&m_fifo_lock); -} - -static int pop_fifo(void) -{ - int fd = -1; - pthread_mutex_lock(&m_fifo_lock); - if (m_fifo_head == m_fifo_tail) { - pthread_cond_wait(&m_fifo_fd_avail, &m_fifo_lock); - } - else { - fd = m_fifo[m_fifo_tail++]; - m_fifo_tail = m_fifo_tail % WORKER_FIFO_SIZE; - pthread_cond_signal(&m_fifo_space_avail); - } - pthread_mutex_unlock(&m_fifo_lock); - - return fd; -} - -static int _io_read(int fd, void *buf, int len) -{ - return recv(fd, buf, len, MSG_WAITALL); -} - -static int _io_write(int fd, const void *buf, int len) -{ - return send(fd, buf, len, 0); -} - -static int _io_close(int fd) -{ - return close(fd); -} - -static struct uffs_ApiSrvIoSt m_io = { - .read = _io_read, - .write = _io_write, - .close = _io_close, -}; - -static struct uffs_ApiSt m_api = { - uffs_version, - uffs_open, - uffs_close, - uffs_read, - uffs_write, - uffs_flush, - uffs_seek, - uffs_tell, - uffs_eof, - uffs_rename, - uffs_remove, - uffs_ftruncate, - uffs_mkdir, - uffs_rmdir, - uffs_stat, - uffs_lstat, - uffs_fstat, - uffs_opendir, - uffs_closedir, - uffs_readdir, - uffs_rewinddir, - uffs_get_error, - uffs_set_error, - uffs_format, - uffs_space_total, - uffs_space_used, - uffs_space_free, - uffs_flush_all, -}; - -static void * worker_thread_fn(void *param) -{ - int fd; - size_t id; - - id = (size_t)param; - - while (1) { - fd = pop_fifo(); - if (fd >= 0) { - apisrv_serve(fd, &m_api); - close(fd); - m_thread_stat[id]++; - } - } - - return NULL; -} - -static void create_worker_threads(void) -{ - static pthread_t worker_threads[WORKER_THREAD_NUM]; - int i; - - for (i = 0; i < WORKER_THREAD_NUM; i++) { - pthread_create(&worker_threads[i], NULL, worker_thread_fn, (void *)((size_t)i)); - } -} - -static void print_worker_thread_stat(void) -{ - int i; - printf("--- thread stat start ---\n"); - for (i = 0; i < WORKER_THREAD_NUM; i++) { - printf("Thread %2d: %d\n", i, m_thread_stat[i]); - } - printf("--- thread stat end --\n"); -} - -static void *api_server_main_thread(void *param) -{ - int srv_fd = -1, new_fd = -1; - struct sockaddr_in my_addr; - struct sockaddr_in peer_addr; - socklen_t sin_size; - int yes = 1; - int ret = 0; - int port = SRV_PORT; - - srv_fd = socket(AF_INET, SOCK_STREAM, 0); - if (srv_fd < 0) { - perror("create srv socket error"); - ret = -1; - goto ext; - } - - if (getenv("UFFS_TEST_SRV_PORT")) { - port = atoi(getenv("UFFS_TEST_SRV_PORT")); - } - - memset(&my_addr, 0, sizeof(struct sockaddr_in)); - my_addr.sin_family = AF_INET; /* host byte order */ - my_addr.sin_port = htons(port); /* short, network byte order */ - my_addr.sin_addr.s_addr = INADDR_ANY; /* 0.0.0.0 */ - - /* "Address already in use" error message */ - ret = setsockopt(srv_fd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(int)); - if (ret < 0) { - perror("setsockopt() error"); - goto ext; - } - - ret = bind(srv_fd, (struct sockaddr *)&my_addr, sizeof(struct sockaddr)); - if (ret < 0) { - perror("Server-bind() error"); - goto ext; - } - - ret = listen(srv_fd, BACKLOGS); - if (ret < 0) { - perror("listen() error"); - goto ext; - } - - sin_size = sizeof(struct sockaddr_in); - - apisrv_setup_io(&m_io); - - create_worker_threads(); - - do { - new_fd = accept(srv_fd, (struct sockaddr *)&peer_addr, &sin_size); - if (new_fd >= 0) { - push_fifo(new_fd); - } - } while (ret >= 0); - -ext: - if (srv_fd >= 0) - close(srv_fd); - - return param; -} - - -int api_server_start(void) -{ - static int started = 0; - pthread_t main_thread; - int ret = 0; - - if (!started) { - started = 1; - ret = pthread_create(&main_thread, NULL, api_server_main_thread, NULL); - } - else { - apisrv_print_stat(); - print_worker_thread_stat(); - printf("apisrv already started.\n"); - } - - return ret; -} - - diff --git a/components/dfs/filesystems/uffs/src/test/api_test/api_test_server_win32.c b/components/dfs/filesystems/uffs/src/test/api_test/api_test_server_win32.c deleted file mode 100644 index 506f1bd7f6..0000000000 --- a/components/dfs/filesystems/uffs/src/test/api_test/api_test_server_win32.c +++ /dev/null @@ -1,194 +0,0 @@ -/* - This file is part of UFFS, the Ultra-low-cost Flash File System. - - Copyright (C) 2005-2009 Ricky Zheng - - UFFS is free software; you can redistribute it and/or modify it under - the GNU Library General Public License as published by the Free Software - Foundation; either version 2 of the License, or (at your option) any - later version. - - UFFS is distributed in the hope that it will be useful, but WITHOUT - ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - or GNU Library General Public License, as applicable, for more details. - - You should have received a copy of the GNU General Public License - and GNU Library General Public License along with UFFS; if not, write - to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, - Boston, MA 02110-1301, USA. - - As a special exception, if other files instantiate templates or use - macros or inline functions from this file, or you compile this file - and link it with other works to produce a work based on this file, - this file does not by itself cause the resulting work to be covered - by the GNU General Public License. However the source code for this - file must still be made available in accordance with section (3) of - the GNU General Public License v2. - - This exception does not invalidate any other reasons why a work based - on this file might be covered by the GNU General Public License. -*/ - -/** - * \file api_test_server_win32.c - * \brief uffs API test server. - * \author Ricky Zheng - */ - -#ifndef WIN32_LEAN_AND_MEAN -#define WIN32_LEAN_AND_MEAN -#endif - -#include -#include -#include -#include -#include -#include - -#include "api_test.h" - -#pragma comment(lib, "Ws2_32.lib") - -#define BACKLOGS 10 - -static int _io_read(int fd, void *buf, int len) -{ - return recv((SOCKET)fd, buf, len, 0); -} - -static int _io_write(int fd, const void *buf, int len) -{ - return send((SOCKET)fd, buf, len, 0); -} - -static int _io_close(int fd) -{ - closesocket((SOCKET)fd); - - return 0; -} - -static struct uffs_ApiSrvIoSt m_io = { - NULL, // open - _io_read, - _io_write, - _io_close, -}; - -static struct uffs_ApiSt m_api = { - uffs_version, - uffs_open, - uffs_close, - uffs_read, - uffs_write, - uffs_flush, - uffs_seek, - uffs_tell, - uffs_eof, - uffs_rename, - uffs_remove, - uffs_ftruncate, - uffs_mkdir, - uffs_rmdir, - uffs_stat, - uffs_lstat, - uffs_fstat, - uffs_opendir, - uffs_closedir, - uffs_readdir, - uffs_rewinddir, - uffs_get_error, - uffs_set_error, - uffs_format, - uffs_space_total, - uffs_space_used, - uffs_space_free, - uffs_flush_all, -}; - -int api_server_start(void) -{ - int iResult; - int ret; - WSADATA wsaData; - - SOCKET ListenSocket = INVALID_SOCKET; - SOCKET ClientSocket = INVALID_SOCKET; - - struct addrinfo *result = NULL; - struct addrinfo hints; - - char port_buf[16]; - - // Initialize Winsock - iResult = WSAStartup(MAKEWORD(2,2), &wsaData); - if (iResult != 0) { - printf("WSAStartup failed: %d\n", iResult); - return -1; - } - - ZeroMemory( &hints, sizeof(hints) ); - hints.ai_family = AF_INET; - hints.ai_socktype = SOCK_STREAM; - hints.ai_protocol = IPPROTO_TCP; - hints.ai_flags = AI_PASSIVE; - - // Resolve the server address and port - sprintf_s(port_buf, sizeof(port_buf), "%d", SRV_PORT); - iResult = getaddrinfo("0.0.0.0", port_buf, &hints, &result); - if ( iResult != 0 ) { - printf("getaddrinfo failed with error: %d\n", iResult); - ret = -1; - goto ext; - } - - // Create a SOCKET for connecting to server - ListenSocket = socket(result->ai_family, result->ai_socktype, result->ai_protocol); - if (ListenSocket == INVALID_SOCKET) { - printf("socket failed with error: %ld\n", WSAGetLastError()); - freeaddrinfo(result); - ret = -1; - goto ext; - } - - // Setup the TCP listening socket - iResult = bind( ListenSocket, result->ai_addr, (int)result->ai_addrlen); - if (iResult == SOCKET_ERROR) { - printf("bind failed with error: %d\n", WSAGetLastError()); - freeaddrinfo(result); - closesocket(ListenSocket); - ret = -1; - goto ext; - } - - freeaddrinfo(result); - - iResult = listen(ListenSocket, SOMAXCONN); - if (iResult == SOCKET_ERROR) { - printf("listen failed with error: %d\n", WSAGetLastError()); - closesocket(ListenSocket); - ret = -1; - goto ext; - } - - apisrv_setup_io(&m_io); - - ret = -1; - do { - // Accept a client socket - ClientSocket = accept(ListenSocket, NULL, NULL); - if (ClientSocket == INVALID_SOCKET) { - printf("accept failed with error: %d\n", WSAGetLastError()); - continue; - } - ret = apisrv_serve((int)ClientSocket, &m_api); - closesocket(ClientSocket); - } while (ret >= 0); - -ext: - WSACleanup(); - - return ret; -} diff --git a/components/dfs/filesystems/uffs/src/test/api_test/os_uffs.c b/components/dfs/filesystems/uffs/src/test/api_test/os_uffs.c deleted file mode 100644 index 594983a9ad..0000000000 --- a/components/dfs/filesystems/uffs/src/test/api_test/os_uffs.c +++ /dev/null @@ -1,531 +0,0 @@ -/* -This file is part of UFFS, the Ultra-low-cost Flash File System. - -Copyright (C) 2005-2009 Ricky Zheng - -UFFS is free software; you can redistribute it and/or modify it under -the GNU Library General Public License as published by the Free Software -Foundation; either version 2 of the License, or (at your option) any -later version. - -UFFS is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -or GNU Library General Public License, as applicable, for more details. - -You should have received a copy of the GNU General Public License -and GNU Library General Public License along with UFFS; if not, write -to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, -Boston, MA 02110-1301, USA. - -As a special exception, if other files instantiate templates or use -macros or inline functions from this file, or you compile this file -and link it with other works to produce a work based on this file, -this file does not by itself cause the resulting work to be covered -by the GNU General Public License. However the source code for this -file must still be made available in accordance with section (3) of -the GNU General Public License v2. - -This exception does not invalidate any other reasons why a work based -on this file might be covered by the GNU General Public License. -*/ - -/** -* \file os_uffs.c -* \brief This file is for interfacing UFFS to sqlite3 UNIX VFS, so that we -* can use sqlite3's test case to test out UFFS. -* -* \author Ricky Zheng, created at 22 Dec, 2011 -*/ - -#define _GNU_SOURCE -#define _XOPEN_SOURCE 500 - -#include "uffs/uffs_types.h" -#include "uffs/uffs_fd.h" - -#include -#include -#include -#include -#include -#include -#include - -#include "api_test.h" - - -#if 1 -#define DBG(args...) \ - do { \ - printf(args); \ - fflush(stdout); \ - } while(0) - -#else -#define DBG(...) do{}while(0) -#endif - -#define ASSERT(cond, fmt, ...) \ - do { \ - if (!(cond)) { \ - printf("Assert (" #cond ") fail at %s:%s:%d: ", __FILE__, __FUNCTION__, __LINE__); \ - printf(fmt, ## __VA_ARGS__); \ - fflush(stdout); \ - exit(1); \ - } \ - } while (0) - -#define MAX_OPEN_FDS 50 -struct fdmap_s { - int unix_fd; - int uffs_fd; - int bak_fd; - char name[256]; - int valid; -}; -static struct fdmap_s m_fdmap[MAX_OPEN_FDS]; -static struct fdmap_s m_fdmap_ext[MAX_OPEN_FDS]; -static pthread_mutex_t m_fdmap_mutex = PTHREAD_MUTEX_INITIALIZER; - -#define LOCK() pthread_mutex_lock(&m_fdmap_mutex) -#define UNLOCK() pthread_mutex_unlock(&m_fdmap_mutex) - -static const char * get_uffs_name(const char *unix_name) -{ - const char *p = NULL; - if (unix_name) { - p = (char *)unix_name + strlen(unix_name) - 1; - for (; *p != '/' && p > unix_name; p--); - } - - return p; -} - -#define FOR_EACH_FD(s, map, p) \ - for (p = &map[0], s = &map[MAX_OPEN_FDS]; p < s; p++) \ - if (p->valid) - - -static void open_check_fd(int unix_fd, int uffs_fd, const char *unix_name) -{ - int n = 0; - struct fdmap_s *s, *p; - - LOCK(); - FOR_EACH_FD(s, m_fdmap, p) { - if (p->unix_fd == unix_fd && - strcmp(p->name, unix_name) == 0) - n++; - } - FOR_EACH_FD(s, m_fdmap_ext, p) { - if (p->unix_fd == unix_fd && - strcmp(p->name, unix_name) == 0) - n++; - } - UNLOCK(); - ASSERT(n == 1, "unix fd %d (name= %s) have %d entries\n", unix_fd, unix_name, n); - - if (uffs_fd >= 0) { - n = 0; - LOCK(); - FOR_EACH_FD(s, m_fdmap, p) { - if (p->uffs_fd == uffs_fd && - strcmp(get_uffs_name(p->name), get_uffs_name(unix_name)) == 0) - n++; - } - UNLOCK(); - ASSERT(n == 1, "uffs fd %d (name = %s) have %d entries\n", uffs_fd, get_uffs_name(unix_name), n); - } -} - -static void unlink_check_fd(const char *unix_name) -{ - struct fdmap_s *s, *p; - - LOCK(); - FOR_EACH_FD(s, m_fdmap, p) { - if (strcmp(p->name, unix_name) == 0) { - // there file already open ? close it ... - DBG("WARNING: unlink %s, but file is not closed ?\n", unix_name); - } - } - FOR_EACH_FD(s, m_fdmap_ext, p) { - if (strcmp(p->name, unix_name) == 0) { - DBG("WARNING: unlink %s, but file is not closed ?\n", unix_name); - } - } - UNLOCK(); - -} - -// return 0 if not in skip table, else return non-zero. -static int check_skip_tbl(const char *path) -{ - static const char *skip_tbl[] = { - "/dev/", "/var/", "/tmp/", "/proc/", "/usr/", "/lib/", "/opt/", "/bin/", NULL /* end */ - }; - int i = 0; - - for (i = 0; skip_tbl[i] != NULL; i++) { - if (memcmp(path, skip_tbl[i], strlen(skip_tbl[i])) == 0) - return 1; - } - - return 0; -} - -static int unix2uffs(int unix_fd, int *uffs_fd, int *bak_fd) -{ - int ret = -1; - struct fdmap_s *s, *p; - - LOCK(); - FOR_EACH_FD(s, m_fdmap, p) { - if (p->unix_fd == unix_fd) { - if (*uffs_fd) - *uffs_fd = p->uffs_fd; - if (bak_fd) - *bak_fd = p->bak_fd; - ret = 0; - break; - } - } - UNLOCK(); - - return ret; -} - -static int push_newfd(const char *unix_name, int unix_fd, int uffs_fd, int bak_fd) -{ - int ret = -1; - struct fdmap_s *p, *end; - - if (unix_fd < 0) - return -1; - - if (uffs_fd >= 0) { - p = &m_fdmap[0]; - end = &m_fdmap[MAX_OPEN_FDS]; - } - else { - p = &m_fdmap_ext[0]; - end = &m_fdmap_ext[MAX_OPEN_FDS]; - } - - LOCK(); - while (p < end) { - if (!p->valid) { - p->unix_fd = unix_fd; - p->uffs_fd = uffs_fd; - p->bak_fd = bak_fd; - strcpy(p->name, unix_name); - p->valid = 1; - ret = 0; - DBG("push_newfd(unix_fd = %d, uffs_fd = %d, bak_fd = %d)\n", unix_fd, uffs_fd, bak_fd); - break; - } - p++; - } - UNLOCK(); - - return ret; -} - -static int remove_fd(int unix_fd) -{ - int ret = -1; - struct fdmap_s *s, *p; - - - LOCK(); - FOR_EACH_FD(s, m_fdmap, p) { - if (p->unix_fd == unix_fd) { - p->valid = 0; - ret = 0; - DBG("remove_fd(unix_fd = %d), uffs_fd = %d, bak_fd = %d\n", unix_fd, p->uffs_fd, p->bak_fd); - break; - } - } - - if (ret != 0) { - FOR_EACH_FD(s, m_fdmap_ext, p) { - if (p->unix_fd == unix_fd) { - p->valid = 0; - ret = 0; - DBG("remove_fd(unix_fd = %d), no uffs_fd\n", unix_fd); - break; - } - } - } - - UNLOCK(); - - return ret; -} - -int os_open(const char *name, int flags, int mode) -{ - int fd = -1; - int uffs_fd = -1, uffs_flags = 0; - int bak_fd = -1; - const char *p; - char bak_name[256] = {0}; - - fd = open(name, flags, mode); - - if (check_skip_tbl(name) == 0 && fd >= 0) { - uffs_flags = 0; - if (flags & O_WRONLY) uffs_flags |= UO_WRONLY; - if (flags & O_RDWR) uffs_flags |= UO_RDWR; - if (flags & O_CREAT) uffs_flags |= UO_CREATE; - if (flags & O_TRUNC) uffs_flags |= UO_TRUNC; - if (flags & O_EXCL) uffs_flags |= UO_EXCL; - - p = get_uffs_name(name); - uffs_fd = uffs_open(p, uffs_flags); - if (uffs_fd >= 0) { - sprintf(bak_name, "bak%s", p); - bak_fd = open(bak_name, flags, mode); - } - - // sqlite3 testing script might delete test.db file outside the control of sqlite lib, - // so we need to detect that situation. - if ( /* strcmp(p, "/test.db") == 0 && */ uffs_fd >= 0 && (flags & O_CREAT)) { - ASSERT(bak_fd >= 0, "bak name = %s, bak fd = %d\n", bak_name, bak_fd); - struct stat sbuf; - if (fstat(fd, &sbuf) == 0 && sbuf.st_size == 0) { - // "test.db" file just been created, we should also do that on UFFS as well - uffs_ftruncate(uffs_fd, 0); - ftruncate(bak_fd, 0); - } - } - } - - if (fd > 0) { - ASSERT(!push_newfd(name, fd, uffs_fd, bak_fd), "push_newfd(fd=%d, uffs_fd=%d, bak_fd=%d)\n", fd, uffs_fd, bak_fd); - open_check_fd(fd, uffs_fd, name); - } - - DBG("open(name = \"%s\", flags = 0x%x, mode = 0x%x) = %d %s\n", name, flags, mode, fd, uffs_fd >= 0 ? "U" : ""); - - return fd; -} - -int os_unlink(const char *name) -{ - int ret = -1, uffs_ret = -1, bak_ret = -1; - const char *p = NULL; - char bak_name[256]; - - if (name) { - unlink_check_fd(name); - ret = unlink(name); - if (check_skip_tbl(name) == 0) { - p = get_uffs_name(name); - uffs_ret = uffs_remove(p); - sprintf(bak_name, "bak%s", p); - bak_ret = unlink(bak_name); - ASSERT(uffs_ret == ret && ret == bak_ret, "unlink(\"%s\"), unix return %d, uffs return %d, bak return %d\n", name, ret, uffs_ret, bak_ret); - } - } - DBG("unlink(name = \"%s\") = %d %s\n", name, ret, p ? "U" : ""); - - return ret; -} - -int os_close(int fd) -{ - int uffs_fd = -1, bak_fd = -1; - int ret = -1; - int x = -1; - - if (fd >= 0) { - unix2uffs(fd, &uffs_fd, &bak_fd); - if (uffs_fd >= 0) { - uffs_close(uffs_fd); - } - if (bak_fd >= 0) - close(bak_fd); - - x = remove_fd(fd); - //ASSERT(!x, "remove_fd(%d) failed.\n", fd); - ret = close(fd); - } - - DBG("close(fd = %d) = %d %s\n", fd, ret, uffs_fd >= 0 ? "U" : ""); - - return ret; -} - -int os_read(int fd, void *buf, int len) -{ - int uffs_fd = -1, uffs_ret = -1, bak_fd = -1, bak_ret = -1; - int ret = -1; - void *uffs_buf = NULL; - void *bak_buf = NULL; - int i; - unsigned char a,b,c; - - if (fd >= 0) { - unix2uffs(fd, &uffs_fd, &bak_fd); - if (uffs_fd >= 0) { - uffs_buf = malloc(len); - bak_buf = malloc(len); - ASSERT(uffs_buf != NULL || bak_buf == NULL, "malloc(%d) failed.\n", len); - uffs_ret = uffs_read(uffs_fd, uffs_buf, len); - bak_ret = read(bak_fd, bak_buf, len); - } - ret = read(fd, buf, len); - if (uffs_fd >= 0) { - ASSERT(ret == uffs_ret && uffs_ret == bak_ret, "read(fd=%d/%d/%d,buf,len=%d), unix return %d, uffs return %d, bak return %d\n", fd, uffs_fd, bak_fd, len, ret, uffs_ret, bak_ret); - //assert(memcmp(buf, uffs_buf, len) == 0); - if (ret > 0) { - if (memcmp(buf, uffs_buf, ret) != 0) { - DBG("ERR: read result different! from fd = %d/%d, len = %d, ret = %d\n", fd, uffs_fd, len, ret); - printf("\t POS unix uffs bak\n"); - for (i = 0; i < len; i++) { - a = *(((char *)buf) + i); - b = *(((char *)uffs_buf) + i); - c = *(((char *)bak_buf) + i); - printf("\t0x%08d: 0x%02x 0x%02x 0x%02x%s\n", i, a, b, c, a == b && b == c ? "" : " <----"); - } - fflush(stdout); - assert(0); - } - } - } - } - - if (uffs_buf) - free(uffs_buf); - - if (bak_buf) - free(bak_buf); - - DBG("read(fd = %d, buf = {...}, len = %d) = %d %s\n", fd, len, ret, uffs_fd >= 0 ? "U" : ""); - - return ret; -} - -int os_write(int fd, const void *buf, int len) -{ - int uffs_fd = -1, uffs_ret = -1, bak_fd = -1, bak_ret = -1; - int ret = -1; - - if (fd >= 0) { - unix2uffs(fd, &uffs_fd, &bak_fd); - if (uffs_fd >= 0) { - uffs_ret = uffs_write(uffs_fd, buf, len); - ASSERT(bak_fd >= 0, "uffs_fd = %d, bak_fd = %d\n", uffs_fd, bak_fd); - bak_ret = write(bak_fd, buf, len); - } - ret = write(fd, buf, len); - if (uffs_fd >= 0) { - ASSERT(ret == uffs_ret && ret == bak_ret, "write(fd=%d/%d/%d,buf,len=%d), unix return %d, uffs return %d, bak return %d\n", fd, uffs_fd, bak_fd, len, ret, uffs_ret, bak_ret); - } - } - - DBG("write(fd = %d, buf = {...}, len = %d) = %d %s\n", fd, len, ret, uffs_fd >= 0 ? "U" : ""); - - return ret; -} - -int os_lseek(int fd, long offset, int origin) -{ - long ret = -1; - int uffs_fd = -1, bak_fd = -1; - long uffs_ret = -1L, bak_ret = -1L; - int uffs_origin = 0; - - if (fd >= 0) { - unix2uffs(fd, &uffs_fd, &bak_fd); - if (uffs_fd >= 0) { - if (origin == SEEK_CUR) - uffs_origin = USEEK_CUR; - else if (origin == SEEK_SET) - uffs_origin = USEEK_SET; - else if (origin == SEEK_END) - uffs_origin = USEEK_END; - - uffs_ret = uffs_seek(uffs_fd, offset, uffs_origin); - bak_ret = lseek(bak_fd, offset, origin); - } - - ret = lseek(fd, offset, origin); - - if (uffs_fd >= 0) { - ASSERT(ret == uffs_ret && ret == bak_ret, "lseek(fd=%d/%d/%d, offset=%ld, origin=%d), unix return %ld, uffs return %ld, bak return %ld\n", fd, uffs_fd, bak_fd, offset, origin, ret, uffs_ret, bak_ret); - } - } - - DBG("lseek(fd = %d, offset = %ld, origin = %d) = %ld %s\n", fd, offset, origin, ret, uffs_fd >= 0 ? "U" : ""); - - return ret; -} - -int os_pread(int fd, void *buf, int count, long offset) -{ - DBG("pread(fd = %d, buf = {...}, count = %d, offset = %ld)\n", fd, count, offset); - assert(0); - return pread(fd, buf, count, offset); -} - -int os_pwrite(int fd, const void *buf, int count, long offset) -{ - DBG("pwrite(fd = %d, buf = {..}, count = %d, offset = %ld)\n", fd, count, offset); - assert(0); - return pwrite(fd, buf, count, offset); -} - -int os_ftruncate(int fd, long length) -{ - int uffs_fd = -1, uffs_ret = -1, bak_fd = -1, bak_ret = -1; - int ret = -1; - - if (fd >= 0) { - unix2uffs(fd, &uffs_fd, &bak_fd); - ret = ftruncate(fd, length); - if (uffs_fd >= 0) { - uffs_ret = uffs_ftruncate(uffs_fd, length); - bak_ret = ftruncate(bak_fd, length); - ASSERT(ret == uffs_ret && ret == bak_ret, - "ftruncate(fd=%d/%d/%d, length=%ld), unix ret %d, uffs ret %d, bak ret %d\n", - fd, uffs_fd, bak_fd, length, ret, uffs_ret, bak_ret); - } - } - DBG("ftruncate(fd = %d, length = %ld) = %d %s\n", fd, length, ret, uffs_fd >= 0 ? "U" : ""); - - return ret; -} - -int os_posix_fallocate(int fd, long offset, long len) -{ - assert(0); - DBG("posix_fallocate(fd = %d, offset = %ld, len = %ld)\n", fd, offset, len); - return posix_fallocate(fd, offset, len); -} - -int os_uffs_init(void) -{ - static int inited = 0; - const char *apisrv_addr; - - if (!inited) { - inited = 1; - memset(m_fdmap, 0, sizeof(m_fdmap)); - memset(m_fdmap_ext, 0, sizeof(m_fdmap_ext)); - - mkdir("bak", 0777); // for mirroring UFFS - - apisrv_addr = getenv("UFFS_TEST_SRV_ADDR"); - if (apisrv_addr == NULL) - apisrv_addr = "127.0.0.1"; - - DBG("os_uffs_init() called, server addr: %s\n", apisrv_addr); - - return api_client_init(apisrv_addr); - } - else - return 0; -} diff --git a/components/dfs/filesystems/uffs/src/test/api_test/os_uffs.h b/components/dfs/filesystems/uffs/src/test/api_test/os_uffs.h deleted file mode 100644 index 4eeb4b9789..0000000000 --- a/components/dfs/filesystems/uffs/src/test/api_test/os_uffs.h +++ /dev/null @@ -1,46 +0,0 @@ -/* - This file is part of UFFS, the Ultra-low-cost Flash File System. - - Copyright (C) 2005-2009 Ricky Zheng - - UFFS is free software; you can redistribute it and/or modify it under - the GNU Library General Public License as published by the Free Software - Foundation; either version 2 of the License, or (at your option) any - later version. - - UFFS is distributed in the hope that it will be useful, but WITHOUT - ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - or GNU Library General Public License, as applicable, for more details. - - You should have received a copy of the GNU General Public License - and GNU Library General Public License along with UFFS; if not, write - to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, - Boston, MA 02110-1301, USA. - - As a special exception, if other files instantiate templates or use - macros or inline functions from this file, or you compile this file - and link it with other works to produce a work based on this file, - this file does not by itself cause the resulting work to be covered - by the GNU General Public License. However the source code for this - file must still be made available in accordance with section (3) of - the GNU General Public License v2. - - This exception does not invalidate any other reasons why a work based - on this file might be covered by the GNU General Public License. -*/ - -/** - * \file os_uffs.h - * \brief header file for interfacing to sqlite3 - * \author Ricky Zheng, created at 22 Dec, 2011 - */ - -#ifndef _OS_UFFS_ -#define _OS_UFFS_ - -int os_open(const char *name, int oflags, int mode); -int os_close(int fd); - -#endif - diff --git a/components/dfs/filesystems/uffs/src/test/clients/CMakeLists.txt b/components/dfs/filesystems/uffs/src/test/clients/CMakeLists.txt deleted file mode 100644 index 1c19be77ff..0000000000 --- a/components/dfs/filesystems/uffs/src/test/clients/CMakeLists.txt +++ /dev/null @@ -1,14 +0,0 @@ -INCLUDE_DIRECTORIES(${uffs_SOURCE_DIR}/src/inc) -INCLUDE_DIRECTORIES(${uffs_SOURCE_DIR}/src/emu) -INCLUDE_DIRECTORIES(${uffs_SOURCE_DIR}/src/test/api_test) - -IF (UNIX) - SET(example_SRCS example.c) - SET(example2_SRCS example-2.c) - ADD_EXECUTABLE(example ${example_SRCS}) - ADD_EXECUTABLE(example-2 ${example2_SRCS}) - TARGET_LINK_LIBRARIES(example apitest_client) - TARGET_LINK_LIBRARIES(example-2 apitest_client) -ENDIF() - - diff --git a/components/dfs/filesystems/uffs/src/test/clients/example-2.c b/components/dfs/filesystems/uffs/src/test/clients/example-2.c deleted file mode 100644 index 86dc941497..0000000000 --- a/components/dfs/filesystems/uffs/src/test/clients/example-2.c +++ /dev/null @@ -1,35 +0,0 @@ -/* - * This is a APT test client example - */ -#include -#include -#include -#include - -#include "uffs/uffs_fd.h" -#include "api_test.h" - - -int main(int argc, char *argv[]) -{ - int interval = 1000; - - if (argc > 2) { - interval = atoi(argv[2]); - } - - printf("Host: %s, Interval: %d\n", argv[1], interval); - - if (api_client_init(argv[1]) == 0) { - while(1) { - uffs_flush_all("/"); - usleep(interval * 1000); - } - } - else { - printf("init failed.\n"); - } - - return 0; -} - diff --git a/components/dfs/filesystems/uffs/src/test/clients/example.c b/components/dfs/filesystems/uffs/src/test/clients/example.c deleted file mode 100644 index 045c9d8363..0000000000 --- a/components/dfs/filesystems/uffs/src/test/clients/example.c +++ /dev/null @@ -1,58 +0,0 @@ -/* - * This is a APT test client example - */ -#include -#include -#include - -#include "uffs/uffs_fd.h" -#include "api_test.h" - - -int main(int argc, char *argv[]) -{ - int version; - int fd; - char buf[128]; - - api_client_init("192.168.0.103"); - - version = uffs_version(); - printf("Version: %08X\n", version); - - fd = uffs_open("/test.txt", UO_RDWR|UO_CREATE); - if (fd < 0) { - printf("Can't create /test.txt\n"); - return -1; - } - - sprintf(buf, "Hello, this is test\n"); - if (uffs_write(fd, buf, strlen(buf)) < 0) { - printf("call uffs_write failed\n"); - } - else { - if (uffs_seek(fd, 7, USEEK_SET) != 7) { - printf("call uffs_seek failed\n"); - } - else { - if (uffs_read(fd, buf, 4) != 4) { - printf("call uffs_read failed\n"); - } - else { - if (memcmp(buf, "this", 4) != 0) { - printf("uffs_read content not matched\n"); - } - else { - printf("everything is ok.\n"); - } - } - } - } - - if (uffs_close(fd) < 0) { - printf("uffs_close failed.\n"); - } - - return 0; -} - diff --git a/components/dfs/filesystems/uffs/src/test/scripts/_t1_sub1.ts b/components/dfs/filesystems/uffs/src/test/scripts/_t1_sub1.ts deleted file mode 100644 index 7863cf9e47..0000000000 --- a/components/dfs/filesystems/uffs/src/test/scripts/_t1_sub1.ts +++ /dev/null @@ -1,22 +0,0 @@ -# $9 --- fd -# $8 --- counter, file content - -evl $8 % 60 -set 6 $1 -evl $1 * 508 -set 7 $1 - -echo --- testing n = $8 / $6, offset = $7 --- - -t_seek $9 $7 s -! abort --- seek file failed --- -t_write $9 $8 -! abort --- write file (n=$8) failed --- -t_seek $9 $7 s -! abort --- seek file failed --- -t_read $9 $8 -! abort --- read file compare failed n=$8 --- - -evl $8 + 1 -set 8 $1 - diff --git a/components/dfs/filesystems/uffs/src/test/scripts/test1.ts b/components/dfs/filesystems/uffs/src/test/scripts/test1.ts deleted file mode 100644 index d2c8264ec2..0000000000 --- a/components/dfs/filesystems/uffs/src/test/scripts/test1.ts +++ /dev/null @@ -1,21 +0,0 @@ -#rm /a -# * 10 t3 /a -t_open w /a -set 9 $1 - -echo --- test batch 1 --- -set 8 0 -* 10 script _t1_sub1.ts - -echo --- test batch 2 --- -set 8 32 -* 10 script _t1_sub1.ts - -echo --- test batch 3 --- -set 8 70 -* 10 script _t1_sub1.ts - -t_close $9 - - - diff --git a/components/dfs/filesystems/uffs/src/test/scripts/test2.ts b/components/dfs/filesystems/uffs/src/test/scripts/test2.ts deleted file mode 100644 index 86fda5ba73..0000000000 --- a/components/dfs/filesystems/uffs/src/test/scripts/test2.ts +++ /dev/null @@ -1,67 +0,0 @@ -t_open cw /a -! abort --- create file /a failed. -set 9 $1 - -t_write_seq $9 1000 -! abort -t_write_seq $9 100 -! abort -t_write_seq $9 10 -! abort -t_write_seq $9 1 -! abort -t_seek $9 100 -! abort -t_write_seq $9 1000 -! abort -t_write_seq $9 100 -! abort -t_write_seq $9 10 -! abort -t_write_seq $9 1 -! abort -t_seek $9 500 -! abort -t_write_seq $9 1000 -! abort -t_write_seq $9 100 -! abort -t_write_seq $9 10 -! abort -t_write_seq $9 1 -! abort -t_seek $9 1500 -! abort -t_write_seq $9 1000 -! abort -t_write_seq $9 100 -! abort -t_write_seq $9 10 -! abort -t_write_seq $9 1 -! abort - -# check ... -t_seek $9 0 -! abort -t_check_seq $9 1000 -! abort -t_seek $9 1 -! abort -t_check_seq $9 1000 -! abort -t_seek $9 1000 -! abort -t_check_seq $9 10 -! abort -t_seek $9 100 -! abort -t_check_seq $9 500 -! abort -t_seek $9 2000 -! abort -t_check_seq $9 100 -! abort - -t_close $9 -echo -- test succ -- \ No newline at end of file diff --git a/components/dfs/filesystems/uffs/src/test/scripts/test_delete.ts b/components/dfs/filesystems/uffs/src/test/scripts/test_delete.ts deleted file mode 100644 index 97a5ed3cf5..0000000000 --- a/components/dfs/filesystems/uffs/src/test/scripts/test_delete.ts +++ /dev/null @@ -1,70 +0,0 @@ -# -# test delete file/dir -# -rm /a - -##################################### -echo == test normal delete == -##################################### - -t_open cw /a -! abort --- Can't create file /a --- -set 9 $1 -t_write_seq $9 100 -! abort --- write file failed --- -t_close $9 -! abort --- close file failed --- -rm /a -! abort --- can't delete /a --- - - -############################################### -echo == test not delete if a file is opened == -############################################### - -t_open cw /a -! abort --- Can't create file /a --- -set 9 $1 -t_write_seq $9 100 -! abort --- write file failed --- -rm /a -# this should failed, save $?(-1) to $8. -set 8 $? -t_close $9 -! abort --- fail to close file --- -test $8 == -1 -! abort --- can delete a file in use ? --- - -###################################### -echo == test delete empty dir == -###################################### - -rm /xx -mkdir /xx -! abort -- can't create /xx -- -mkdir /xx/yy -! abort -- can't create /xx/yy -- -rm /xx/yy -! abort -- can't delete /xx/yy --- -rm /xx -! abort -- can't delet /xx - -######################################### -echo == test not delete non-empty dir == -######################################### - -mkdir /xx -t1 /xx/a.txt -rm /xx -test $? == -1 -! abort --- delete a non-empty dir success ?? --- -rm /xx/a.txt -! abort --- can't delete /xx/a.txt --- -rm /xx -! abort --- can't delet /xx --- - - -echo ################################## -echo -------- ALL TEST SUCCESS -------- -echo ################################## - diff --git a/components/dfs/filesystems/uffs/src/test/scripts/test_seek.ts b/components/dfs/filesystems/uffs/src/test/scripts/test_seek.ts deleted file mode 100644 index dce639ea51..0000000000 --- a/components/dfs/filesystems/uffs/src/test/scripts/test_seek.ts +++ /dev/null @@ -1,60 +0,0 @@ -rm /test_seek.bin - -# create a new file -t_open wc /test_seek.bin - -! abort ---- create file failed ---- -set 9 $1 # opened fd => $9 - -# test seek and write -t_write $9 hello-world -! abort ---- write file failed ---- -t_seek $9 5 s -! abort --- seek file to 5 failed --- -test $1 == 5 -! abort --- file pointer is not 5 --- -t_write $9 & -! abort --- write '&' at position 5 failed --- -t_seek $9 0 s -! abort --- seek file to 0 failed -test $1 == 0 -! abort -- file pointer not 0 --- -t_read $9 hello&world -! abort --- check file failed --- - -# test seek in different options -t_seek $9 0 s -test $1 == 0 -! abort -- file pointer seek to 0 s failed -- -t_seek $9 100 s -test $1 == 100 -! abort -- file pointer seek to 100 s failed -- -t_seek $9 10 c -test $1 == 110 -! abort -- file pointer seek to +10 c failed -- -t_seek $9 -10 c -test $1 == 100 -! abort -- file pointer seek to -10 c failed -- -t_seek $9 0 e -test $1 == 11 -! abort -- file pointer seek to 0 e failed -- -t_seek $9 -1 e -test $1 == 10 -! abort -- file pointer seek to -1 e failed -- -t_seek $9 10 e -test $1 == 21 -! abort -- file pointer seek to +10 e failed -- - -# now the file pointer is passed over the end of file, -# write to it will increase file size and filling 0 in the gap - -t_write $9 a -test $? == 0 -! abort -- file write to position passed over file length failed -- -t_seek $9 0 e -test $1 == 22 -! abort -- file new length not filling the gap -- - -t_close $9 -! abort --- close file failed --- -echo === test seek success === diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/Makefile b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/Makefile deleted file mode 100644 index 54dec9abdc..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/Makefile +++ /dev/null @@ -1,963 +0,0 @@ -#!/usr/make -# -# Makefile for SQLITE -# -# This makefile is suppose to be configured automatically using the -# autoconf. But if that does not work for you, you can configure -# the makefile manually. Just set the parameters below to values that -# work well for your system. -# -# If the configure script does not work out-of-the-box, you might -# be able to get it to work by giving it some hints. See the comment -# at the beginning of configure.in for additional information. -# - -# The toplevel directory of the source tree. This is the directory -# that contains this "Makefile.in" and the "configure.in" script. -# -TOP = . - -# C Compiler and options for use in building executables that -# will run on the platform that is doing the build. -# -BCC = gcc -g -O2 - -# C Compile and options for use in building executables that -# will run on the target platform. (BCC and TCC are usually the -# same unless your are cross-compiling.) -# -TCC = gcc -g -O2 -DSQLITE_OS_UNIX=1 -I. -I${TOP}/src -I${TOP}/ext/rtree - -# Define this for the autoconf-based build, so that the code knows it can -# include the generated config.h -# -TCC += -D_HAVE_SQLITE_CONFIG_H - -# Define -DNDEBUG to compile without debugging (i.e., for production usage) -# Omitting the define will cause extra debugging code to be inserted and -# includes extra comments when "EXPLAIN stmt" is used. -# -TCC += -DNDEBUG - -# test UFFS -TCC += -DUFFS_TEST - -UFFS_BUILD_PATH = $(HOME)/build/uffs - -# Compiler options needed for programs that use the TCL library. -# -TCC += -I/usr/include/tcl8.5 - -# The library that programs using TCL must link against. -# -LIBTCL = -L/usr/lib -ltcl8.5 -ldl -lpthread -lieee -lm - -# Compiler options needed for programs that use the readline() library. -# -READLINE_FLAGS = -DHAVE_READLINE=1 -I/usr/include/readline - -# The library that programs using readline() must link against. -# -LIBREADLINE = -lreadline -lreadline - -# Should the database engine be compiled threadsafe -# -TCC += -DSQLITE_THREADSAFE=1 - -# Any target libraries which libsqlite must be linked against -# -TLIBS = -lpthread -L$(UFFS_BUILD_PATH)/src/test/api_test -lapitest_sqlite3 - - -# Flags controlling use of the in memory btree implementation -# -# SQLITE_TEMP_STORE is 0 to force temporary tables to be in a file, 1 to -# default to file, 2 to default to memory, and 3 to force temporary -# tables to always be in memory. -# -TEMP_STORE = -DSQLITE_TEMP_STORE=1 - -# Enable/disable loadable extensions, and other optional features -# based on configuration. (-DSQLITE_OMIT*, -DSQLITE_ENABLE*). -# The same set of OMIT and ENABLE flags should be passed to the -# LEMON parser generator and the mkkeywordhash tool as well. -OPT_FEATURE_FLAGS = -DSQLITE_OMIT_LOAD_EXTENSION=1 - -TCC += $(OPT_FEATURE_FLAGS) - -# Add in any optional parameters specified on the make commane line -# ie. make "OPTS=-DSQLITE_ENABLE_FOO=1 -DSQLITE_OMIT_FOO=1". -TCC += $(OPTS) - -# Version numbers and release number for the SQLite being compiled. -# -VERSION = 3.7 -VERSION_NUMBER = 3007009 -RELEASE = 3.7.9 - -# Filename extensions -# -BEXE = -TEXE = - -# The following variable is "1" if the configure script was able to locate -# the tclConfig.sh file. It is an empty string otherwise. When this -# variable is "1", the TCL extension library (libtclsqlite3.so) is built -# and installed. -# -HAVE_TCL = 1 - -# This is the command to use for tclsh - normally just "tclsh", but we may -# know the specific version we want to use -# -TCLSH_CMD = tclsh8.5 - -# Where do we want to install the tcl plugin -# -TCLLIBDIR = /usr/share/tcltk/tcl8.5/sqlite3 - -# The suffix used on shared libraries. Ex: ".dll", ".so", ".dylib" -# -SHLIB_SUFFIX = @TCL_SHLIB_SUFFIX@ - -# If gcov support was enabled by the configure script, add the appropriate -# flags here. It's not always as easy as just having the user add the right -# CFLAGS / LDFLAGS, because libtool wants to use CFLAGS when linking, which -# causes build errors with -fprofile-arcs -ftest-coverage with some GCCs. -# Supposedly GCC does the right thing if you use --coverage, but in -# practice it still fails. See: -# -# http://www.mail-archive.com/debian-gcc@lists.debian.org/msg26197.html -# -# for more info. -# -GCOV_CFLAGS1 = -DSQLITE_COVERAGE_TEST=1 -fprofile-arcs -ftest-coverage -GCOV_LDFLAGS1 = -lgcov -USE_GCOV = 0 -LTCOMPILE_EXTRAS += $(GCOV_CFLAGS$(USE_GCOV)) -LTLINK_EXTRAS += $(GCOV_LDFLAGS$(USE_GCOV)) - - -# The directory into which to store package information for - -# Some standard variables and programs -# -prefix = /usr/local -exec_prefix = ${prefix} -libdir = ${exec_prefix}/lib -pkgconfigdir = $(libdir)/pkgconfig -bindir = ${exec_prefix}/bin -includedir = ${prefix}/include -INSTALL = /usr/bin/install -c -LIBTOOL = ./libtool -ALLOWRELEASE = - -# libtool compile/link/install -LTCOMPILE = $(LIBTOOL) --mode=compile --tag=CC $(TCC) $(LTCOMPILE_EXTRAS) -LTLINK = $(LIBTOOL) --mode=link $(TCC) $(LTCOMPILE_EXTRAS) $(LTLINK_EXTRAS) -LTINSTALL = $(LIBTOOL) --mode=install $(INSTALL) - -# nawk compatible awk. -NAWK = gawk - -# You should not have to change anything below this line -############################################################################### - -USE_AMALGAMATION = 1 - -# Object files for the SQLite library (non-amalgamation). -# -LIBOBJS0 = alter.lo analyze.lo attach.lo auth.lo \ - backup.lo bitvec.lo btmutex.lo btree.lo build.lo \ - callback.lo complete.lo ctime.lo date.lo delete.lo \ - expr.lo fault.lo fkey.lo \ - fts3.lo fts3_aux.lo fts3_expr.lo fts3_hash.lo fts3_icu.lo fts3_porter.lo \ - fts3_snippet.lo fts3_tokenizer.lo fts3_tokenizer1.lo fts3_write.lo \ - func.lo global.lo hash.lo \ - icu.lo insert.lo journal.lo legacy.lo loadext.lo \ - main.lo malloc.lo mem0.lo mem1.lo mem2.lo mem3.lo mem5.lo \ - memjournal.lo \ - mutex.lo mutex_noop.lo mutex_os2.lo mutex_unix.lo mutex_w32.lo \ - notify.lo opcodes.lo os.lo os_os2.lo os_unix.lo os_win.lo \ - pager.lo parse.lo pcache.lo pcache1.lo pragma.lo prepare.lo printf.lo \ - random.lo resolve.lo rowset.lo rtree.lo select.lo status.lo \ - table.lo tokenize.lo trigger.lo \ - update.lo util.lo vacuum.lo \ - vdbe.lo vdbeapi.lo vdbeaux.lo vdbeblob.lo vdbemem.lo vdbesort.lo \ - vdbetrace.lo wal.lo walker.lo where.lo utf.lo vtab.lo - -# Object files for the amalgamation. -# -LIBOBJS1 = sqlite3.lo - -# Determine the real value of LIBOBJ based on the 'configure' script -# -LIBOBJ = $(LIBOBJS$(USE_AMALGAMATION)) - - -# All of the source code files. -# -SRC = \ - $(TOP)/src/alter.c \ - $(TOP)/src/analyze.c \ - $(TOP)/src/attach.c \ - $(TOP)/src/auth.c \ - $(TOP)/src/backup.c \ - $(TOP)/src/bitvec.c \ - $(TOP)/src/btmutex.c \ - $(TOP)/src/btree.c \ - $(TOP)/src/btree.h \ - $(TOP)/src/btreeInt.h \ - $(TOP)/src/build.c \ - $(TOP)/src/callback.c \ - $(TOP)/src/complete.c \ - $(TOP)/src/ctime.c \ - $(TOP)/src/date.c \ - $(TOP)/src/delete.c \ - $(TOP)/src/expr.c \ - $(TOP)/src/fault.c \ - $(TOP)/src/fkey.c \ - $(TOP)/src/func.c \ - $(TOP)/src/global.c \ - $(TOP)/src/hash.c \ - $(TOP)/src/hash.h \ - $(TOP)/src/hwtime.h \ - $(TOP)/src/insert.c \ - $(TOP)/src/journal.c \ - $(TOP)/src/legacy.c \ - $(TOP)/src/loadext.c \ - $(TOP)/src/main.c \ - $(TOP)/src/malloc.c \ - $(TOP)/src/mem0.c \ - $(TOP)/src/mem1.c \ - $(TOP)/src/mem2.c \ - $(TOP)/src/mem3.c \ - $(TOP)/src/mem5.c \ - $(TOP)/src/memjournal.c \ - $(TOP)/src/mutex.c \ - $(TOP)/src/mutex.h \ - $(TOP)/src/mutex_noop.c \ - $(TOP)/src/mutex_os2.c \ - $(TOP)/src/mutex_unix.c \ - $(TOP)/src/mutex_w32.c \ - $(TOP)/src/notify.c \ - $(TOP)/src/os.c \ - $(TOP)/src/os.h \ - $(TOP)/src/os_common.h \ - $(TOP)/src/os_os2.c \ - $(TOP)/src/os_unix.c \ - $(TOP)/src/os_win.c \ - $(TOP)/src/pager.c \ - $(TOP)/src/pager.h \ - $(TOP)/src/parse.y \ - $(TOP)/src/pcache.c \ - $(TOP)/src/pcache.h \ - $(TOP)/src/pcache1.c \ - $(TOP)/src/pragma.c \ - $(TOP)/src/prepare.c \ - $(TOP)/src/printf.c \ - $(TOP)/src/random.c \ - $(TOP)/src/resolve.c \ - $(TOP)/src/rowset.c \ - $(TOP)/src/select.c \ - $(TOP)/src/status.c \ - $(TOP)/src/shell.c \ - $(TOP)/src/sqlite.h.in \ - $(TOP)/src/sqlite3ext.h \ - $(TOP)/src/sqliteInt.h \ - $(TOP)/src/sqliteLimit.h \ - $(TOP)/src/table.c \ - $(TOP)/src/tclsqlite.c \ - $(TOP)/src/tokenize.c \ - $(TOP)/src/trigger.c \ - $(TOP)/src/utf.c \ - $(TOP)/src/update.c \ - $(TOP)/src/util.c \ - $(TOP)/src/vacuum.c \ - $(TOP)/src/vdbe.c \ - $(TOP)/src/vdbe.h \ - $(TOP)/src/vdbeapi.c \ - $(TOP)/src/vdbeaux.c \ - $(TOP)/src/vdbeblob.c \ - $(TOP)/src/vdbemem.c \ - $(TOP)/src/vdbesort.c \ - $(TOP)/src/vdbetrace.c \ - $(TOP)/src/vdbeInt.h \ - $(TOP)/src/vtab.c \ - $(TOP)/src/wal.c \ - $(TOP)/src/wal.h \ - $(TOP)/src/walker.c \ - $(TOP)/src/where.c - -# Source code for extensions -# -SRC += \ - $(TOP)/ext/fts1/fts1.c \ - $(TOP)/ext/fts1/fts1.h \ - $(TOP)/ext/fts1/fts1_hash.c \ - $(TOP)/ext/fts1/fts1_hash.h \ - $(TOP)/ext/fts1/fts1_porter.c \ - $(TOP)/ext/fts1/fts1_tokenizer.h \ - $(TOP)/ext/fts1/fts1_tokenizer1.c -SRC += \ - $(TOP)/ext/fts2/fts2.c \ - $(TOP)/ext/fts2/fts2.h \ - $(TOP)/ext/fts2/fts2_hash.c \ - $(TOP)/ext/fts2/fts2_hash.h \ - $(TOP)/ext/fts2/fts2_icu.c \ - $(TOP)/ext/fts2/fts2_porter.c \ - $(TOP)/ext/fts2/fts2_tokenizer.h \ - $(TOP)/ext/fts2/fts2_tokenizer.c \ - $(TOP)/ext/fts2/fts2_tokenizer1.c -SRC += \ - $(TOP)/ext/fts3/fts3.c \ - $(TOP)/ext/fts3/fts3.h \ - $(TOP)/ext/fts3/fts3Int.h \ - $(TOP)/ext/fts3/fts3_aux.c \ - $(TOP)/ext/fts3/fts3_expr.c \ - $(TOP)/ext/fts3/fts3_hash.c \ - $(TOP)/ext/fts3/fts3_hash.h \ - $(TOP)/ext/fts3/fts3_icu.c \ - $(TOP)/ext/fts3/fts3_porter.c \ - $(TOP)/ext/fts3/fts3_snippet.c \ - $(TOP)/ext/fts3/fts3_tokenizer.h \ - $(TOP)/ext/fts3/fts3_tokenizer.c \ - $(TOP)/ext/fts3/fts3_tokenizer1.c \ - $(TOP)/ext/fts3/fts3_write.c -SRC += \ - $(TOP)/ext/icu/sqliteicu.h \ - $(TOP)/ext/icu/icu.c -SRC += \ - $(TOP)/ext/rtree/rtree.h \ - $(TOP)/ext/rtree/rtree.c - - -# Generated source code files -# -SRC += \ - keywordhash.h \ - opcodes.c \ - opcodes.h \ - parse.c \ - parse.h \ - config.h \ - sqlite3.h - -# Source code to the test files. -# -TESTSRC = \ - $(TOP)/src/test1.c \ - $(TOP)/src/test2.c \ - $(TOP)/src/test3.c \ - $(TOP)/src/test4.c \ - $(TOP)/src/test5.c \ - $(TOP)/src/test6.c \ - $(TOP)/src/test7.c \ - $(TOP)/src/test8.c \ - $(TOP)/src/test9.c \ - $(TOP)/src/test_autoext.c \ - $(TOP)/src/test_async.c \ - $(TOP)/src/test_backup.c \ - $(TOP)/src/test_btree.c \ - $(TOP)/src/test_config.c \ - $(TOP)/src/test_demovfs.c \ - $(TOP)/src/test_devsym.c \ - $(TOP)/src/test_func.c \ - $(TOP)/src/test_fuzzer.c \ - $(TOP)/src/test_hexio.c \ - $(TOP)/src/test_init.c \ - $(TOP)/src/test_intarray.c \ - $(TOP)/src/test_journal.c \ - $(TOP)/src/test_malloc.c \ - $(TOP)/src/test_multiplex.c \ - $(TOP)/src/test_mutex.c \ - $(TOP)/src/test_onefile.c \ - $(TOP)/src/test_osinst.c \ - $(TOP)/src/test_pcache.c \ - $(TOP)/src/test_quota.c \ - $(TOP)/src/test_rtree.c \ - $(TOP)/src/test_schema.c \ - $(TOP)/src/test_server.c \ - $(TOP)/src/test_superlock.c \ - $(TOP)/src/test_syscall.c \ - $(TOP)/src/test_stat.c \ - $(TOP)/src/test_tclvar.c \ - $(TOP)/src/test_thread.c \ - $(TOP)/src/test_vfs.c \ - $(TOP)/src/test_wholenumber.c \ - $(TOP)/src/test_wsd.c \ - $(TOP)/ext/fts3/fts3_term.c \ - $(TOP)/ext/fts3/fts3_test.c - -# Source code to the library files needed by the test fixture -# -TESTSRC2 = \ - $(TOP)/src/attach.c \ - $(TOP)/src/backup.c \ - $(TOP)/src/bitvec.c \ - $(TOP)/src/btree.c \ - $(TOP)/src/build.c \ - $(TOP)/src/ctime.c \ - $(TOP)/src/date.c \ - $(TOP)/src/expr.c \ - $(TOP)/src/func.c \ - $(TOP)/src/insert.c \ - $(TOP)/src/wal.c \ - $(TOP)/src/mem5.c \ - $(TOP)/src/os.c \ - $(TOP)/src/os_os2.c \ - $(TOP)/src/os_unix.c \ - $(TOP)/src/os_win.c \ - $(TOP)/src/pager.c \ - $(TOP)/src/pragma.c \ - $(TOP)/src/prepare.c \ - $(TOP)/src/printf.c \ - $(TOP)/src/random.c \ - $(TOP)/src/pcache.c \ - $(TOP)/src/pcache1.c \ - $(TOP)/src/select.c \ - $(TOP)/src/tokenize.c \ - $(TOP)/src/utf.c \ - $(TOP)/src/util.c \ - $(TOP)/src/vdbeapi.c \ - $(TOP)/src/vdbeaux.c \ - $(TOP)/src/vdbe.c \ - $(TOP)/src/vdbemem.c \ - $(TOP)/src/vdbetrace.c \ - $(TOP)/src/where.c \ - parse.c \ - $(TOP)/ext/fts3/fts3.c \ - $(TOP)/ext/fts3/fts3_aux.c \ - $(TOP)/ext/fts3/fts3_expr.c \ - $(TOP)/ext/fts3/fts3_term.c \ - $(TOP)/ext/fts3/fts3_tokenizer.c \ - $(TOP)/ext/fts3/fts3_write.c \ - $(TOP)/ext/async/sqlite3async.c - -# Header files used by all library source files. -# -HDR = \ - $(TOP)/src/btree.h \ - $(TOP)/src/btreeInt.h \ - $(TOP)/src/hash.h \ - $(TOP)/src/hwtime.h \ - keywordhash.h \ - $(TOP)/src/mutex.h \ - opcodes.h \ - $(TOP)/src/os.h \ - $(TOP)/src/os_common.h \ - $(TOP)/src/pager.h \ - $(TOP)/src/pcache.h \ - parse.h \ - sqlite3.h \ - $(TOP)/src/sqlite3ext.h \ - $(TOP)/src/sqliteInt.h \ - $(TOP)/src/sqliteLimit.h \ - $(TOP)/src/vdbe.h \ - $(TOP)/src/vdbeInt.h \ - config.h - -# Header files used by extensions -# -EXTHDR += \ - $(TOP)/ext/fts1/fts1.h \ - $(TOP)/ext/fts1/fts1_hash.h \ - $(TOP)/ext/fts1/fts1_tokenizer.h -EXTHDR += \ - $(TOP)/ext/fts2/fts2.h \ - $(TOP)/ext/fts2/fts2_hash.h \ - $(TOP)/ext/fts2/fts2_tokenizer.h -EXTHDR += \ - $(TOP)/ext/fts3/fts3.h \ - $(TOP)/ext/fts3/fts3Int.h \ - $(TOP)/ext/fts3/fts3_hash.h \ - $(TOP)/ext/fts3/fts3_tokenizer.h -EXTHDR += \ - $(TOP)/ext/rtree/rtree.h -EXTHDR += \ - $(TOP)/ext/icu/sqliteicu.h -EXTHDR += \ - $(TOP)/ext/rtree/sqlite3rtree.h - -# This is the default Makefile target. The objects listed here -# are what get build when you type just "make" with no arguments. -# -all: sqlite3.h libsqlite3.la sqlite3$(TEXE) $(HAVE_TCL:1=libtclsqlite3.la) - -Makefile: $(TOP)/Makefile.in - ./config.status - -sqlite3.pc: $(TOP)/sqlite3.pc.in - ./config.status - -libsqlite3.la: $(LIBOBJ) - $(LTLINK) -o $@ $(LIBOBJ) $(TLIBS) \ - ${ALLOWRELEASE} -rpath "$(libdir)" -version-info "8:6:8" - -libtclsqlite3.la: tclsqlite.lo libsqlite3.la - $(LTLINK) -o $@ tclsqlite.lo \ - libsqlite3.la -L/usr/lib -ltclstub8.5 $(TLIBS) \ - -rpath "$(TCLLIBDIR)" \ - -version-info "8:6:8" \ - -avoid-version - -sqlite3$(TEXE): $(TOP)/src/shell.c libsqlite3.la sqlite3.h - $(LTLINK) $(READLINE_FLAGS) \ - -o $@ $(TOP)/src/shell.c libsqlite3.la \ - $(LIBREADLINE) $(TLIBS) -rpath "$(libdir)" - -# This target creates a directory named "tsrc" and fills it with -# copies of all of the C source code and header files needed to -# build on the target system. Some of the C source code and header -# files are automatically generated. This target takes care of -# all that automatic generation. -# -.target_source: $(SRC) $(TOP)/tool/vdbe-compress.tcl - rm -rf tsrc - mkdir tsrc - cp -f $(SRC) tsrc - rm tsrc/sqlite.h.in tsrc/parse.y - $(TCLSH_CMD) $(TOP)/tool/vdbe-compress.tcl vdbe.new - mv vdbe.new tsrc/vdbe.c - touch .target_source - -sqlite3.c: .target_source $(TOP)/tool/mksqlite3c.tcl - $(TCLSH_CMD) $(TOP)/tool/mksqlite3c.tcl - -sqlite3-all.c: sqlite3.c $(TOP)/tool/split-sqlite3c.tcl - $(TCLSH_CMD) $(TOP)/tool/split-sqlite3c.tcl - -# Rule to build the amalgamation -# -sqlite3.lo: sqlite3.c - $(LTCOMPILE) $(TEMP_STORE) -c sqlite3.c - -# Rules to build the LEMON compiler generator -# -lemon$(BEXE): $(TOP)/tool/lemon.c $(TOP)/src/lempar.c - $(BCC) -o $@ $(TOP)/tool/lemon.c - cp $(TOP)/src/lempar.c . - -# Rules to build individual *.o files from generated *.c files. This -# applies to: -# -# parse.o -# opcodes.o -# -parse.lo: parse.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c parse.c - -opcodes.lo: opcodes.c - $(LTCOMPILE) $(TEMP_STORE) -c opcodes.c - -# Rules to build individual *.o files from files in the src directory. -# -alter.lo: $(TOP)/src/alter.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/alter.c - -analyze.lo: $(TOP)/src/analyze.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/analyze.c - -attach.lo: $(TOP)/src/attach.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/attach.c - -auth.lo: $(TOP)/src/auth.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/auth.c - -backup.lo: $(TOP)/src/backup.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/backup.c - -bitvec.lo: $(TOP)/src/bitvec.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/bitvec.c - -btmutex.lo: $(TOP)/src/btmutex.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/btmutex.c - -btree.lo: $(TOP)/src/btree.c $(HDR) $(TOP)/src/pager.h - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/btree.c - -build.lo: $(TOP)/src/build.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/build.c - -callback.lo: $(TOP)/src/callback.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/callback.c - -complete.lo: $(TOP)/src/complete.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/complete.c - -ctime.lo: $(TOP)/src/ctime.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/ctime.c - -date.lo: $(TOP)/src/date.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/date.c - -delete.lo: $(TOP)/src/delete.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/delete.c - -expr.lo: $(TOP)/src/expr.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/expr.c - -fault.lo: $(TOP)/src/fault.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/fault.c - -fkey.lo: $(TOP)/src/fkey.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/fkey.c - -func.lo: $(TOP)/src/func.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/func.c - -global.lo: $(TOP)/src/global.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/global.c - 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$(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/mem5.c - -memjournal.lo: $(TOP)/src/memjournal.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/memjournal.c - -mutex.lo: $(TOP)/src/mutex.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/mutex.c - -mutex_noop.lo: $(TOP)/src/mutex_noop.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/mutex_noop.c - -mutex_os2.lo: $(TOP)/src/mutex_os2.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/mutex_os2.c - -mutex_unix.lo: $(TOP)/src/mutex_unix.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/mutex_unix.c - -mutex_w32.lo: $(TOP)/src/mutex_w32.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/mutex_w32.c - -notify.lo: $(TOP)/src/notify.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/notify.c - -pager.lo: $(TOP)/src/pager.c $(HDR) $(TOP)/src/pager.h - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/pager.c - -pcache.lo: $(TOP)/src/pcache.c $(HDR) $(TOP)/src/pcache.h - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/pcache.c - -pcache1.lo: $(TOP)/src/pcache1.c $(HDR) $(TOP)/src/pcache.h - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/pcache1.c - -os.lo: $(TOP)/src/os.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/os.c - -os_unix.lo: $(TOP)/src/os_unix.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/os_unix.c - -os_win.lo: $(TOP)/src/os_win.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/os_win.c - -os_os2.lo: $(TOP)/src/os_os2.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/os_os2.c - -pragma.lo: $(TOP)/src/pragma.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/pragma.c - -prepare.lo: $(TOP)/src/prepare.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/prepare.c - -printf.lo: $(TOP)/src/printf.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/printf.c - -random.lo: $(TOP)/src/random.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/random.c - -resolve.lo: $(TOP)/src/resolve.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/resolve.c - -rowset.lo: $(TOP)/src/rowset.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/rowset.c - -select.lo: $(TOP)/src/select.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/select.c - -status.lo: $(TOP)/src/status.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/status.c - -table.lo: $(TOP)/src/table.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/table.c - -tokenize.lo: $(TOP)/src/tokenize.c keywordhash.h $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/tokenize.c - -trigger.lo: $(TOP)/src/trigger.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/trigger.c - -update.lo: $(TOP)/src/update.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/update.c - -utf.lo: $(TOP)/src/utf.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/utf.c - -util.lo: $(TOP)/src/util.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/util.c - -vacuum.lo: $(TOP)/src/vacuum.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/vacuum.c - -vdbe.lo: $(TOP)/src/vdbe.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/vdbe.c - -vdbeapi.lo: $(TOP)/src/vdbeapi.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/vdbeapi.c - -vdbeaux.lo: $(TOP)/src/vdbeaux.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/vdbeaux.c - -vdbeblob.lo: $(TOP)/src/vdbeblob.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/vdbeblob.c - -vdbemem.lo: $(TOP)/src/vdbemem.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/vdbemem.c - -vdbesort.lo: $(TOP)/src/vdbesort.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/vdbesort.c - -vdbetrace.lo: $(TOP)/src/vdbetrace.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/vdbetrace.c - -vtab.lo: $(TOP)/src/vtab.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/vtab.c - -wal.lo: $(TOP)/src/wal.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/wal.c - -walker.lo: $(TOP)/src/walker.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/walker.c - -where.lo: $(TOP)/src/where.c $(HDR) - $(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/where.c - -tclsqlite.lo: $(TOP)/src/tclsqlite.c $(HDR) - $(LTCOMPILE) -DUSE_TCL_STUBS=1 -c $(TOP)/src/tclsqlite.c - -tclsqlite-shell.lo: $(TOP)/src/tclsqlite.c $(HDR) - $(LTCOMPILE) -DTCLSH=1 -o $@ -c $(TOP)/src/tclsqlite.c - 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$(BCC) -o mkkeywordhash$(BEXE) $(OPT_FEATURE_FLAGS) $(OPTS) $(TOP)/tool/mkkeywordhash.c - ./mkkeywordhash$(BEXE) >keywordhash.h - - - -# Rules to build the extension objects. -# -icu.lo: $(TOP)/ext/icu/icu.c $(HDR) $(EXTHDR) - $(LTCOMPILE) -DSQLITE_CORE -c $(TOP)/ext/icu/icu.c - -fts2.lo: $(TOP)/ext/fts2/fts2.c $(HDR) $(EXTHDR) - $(LTCOMPILE) -DSQLITE_CORE -c $(TOP)/ext/fts2/fts2.c - -fts2_hash.lo: $(TOP)/ext/fts2/fts2_hash.c $(HDR) $(EXTHDR) - $(LTCOMPILE) -DSQLITE_CORE -c $(TOP)/ext/fts2/fts2_hash.c - -fts2_icu.lo: $(TOP)/ext/fts2/fts2_icu.c $(HDR) $(EXTHDR) - $(LTCOMPILE) -DSQLITE_CORE -c $(TOP)/ext/fts2/fts2_icu.c - -fts2_porter.lo: $(TOP)/ext/fts2/fts2_porter.c $(HDR) $(EXTHDR) - $(LTCOMPILE) -DSQLITE_CORE -c $(TOP)/ext/fts2/fts2_porter.c - -fts2_tokenizer.lo: $(TOP)/ext/fts2/fts2_tokenizer.c $(HDR) $(EXTHDR) - $(LTCOMPILE) -DSQLITE_CORE -c $(TOP)/ext/fts2/fts2_tokenizer.c - -fts2_tokenizer1.lo: $(TOP)/ext/fts2/fts2_tokenizer1.c $(HDR) $(EXTHDR) - $(LTCOMPILE) -DSQLITE_CORE -c $(TOP)/ext/fts2/fts2_tokenizer1.c - 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$(LTCOMPILE) -DSQLITE_CORE -c $(TOP)/ext/fts3/fts3_tokenizer1.c - -fts3_write.lo: $(TOP)/ext/fts3/fts3_write.c $(HDR) $(EXTHDR) - $(LTCOMPILE) -DSQLITE_CORE -c $(TOP)/ext/fts3/fts3_write.c - -rtree.lo: $(TOP)/ext/rtree/rtree.c $(HDR) $(EXTHDR) - $(LTCOMPILE) -DSQLITE_CORE -c $(TOP)/ext/rtree/rtree.c - - -# Rules to build the 'testfixture' application. -# -# If using the amalgamation, use sqlite3.c directly to build the test -# fixture. Otherwise link against libsqlite3.la. (This distinction is -# necessary because the test fixture requires non-API symbols which are -# hidden when the library is built via the amalgamation). -# -TESTFIXTURE_FLAGS = -DTCLSH=1 -DSQLITE_TEST=1 -DSQLITE_CRASH_TEST=1 -TESTFIXTURE_FLAGS += -DSQLITE_SERVER=1 -DSQLITE_PRIVATE="" -DSQLITE_CORE -TESTFIXTURE_FLAGS += -DBUILD_sqlite - -TESTFIXTURE_SRC0 = $(TESTSRC2) libsqlite3.la -TESTFIXTURE_SRC1 = sqlite3.c -TESTFIXTURE_SRC = $(TESTSRC) $(TOP)/src/tclsqlite.c $(TESTFIXTURE_SRC$(USE_AMALGAMATION)) - -testfixture$(TEXE): $(TESTFIXTURE_SRC) - $(LTLINK) -DSQLITE_NO_SYNC=1 $(TEMP_STORE) $(TESTFIXTURE_FLAGS) \ - -o $@ $(TESTFIXTURE_SRC) $(LIBTCL) $(TLIBS) - - -fulltest: testfixture$(TEXE) sqlite3$(TEXE) - ./testfixture$(TEXE) $(TOP)/test/all.test - -soaktest: testfixture$(TEXE) sqlite3$(TEXE) - ./testfixture$(TEXE) $(TOP)/test/all.test -soak=1 - -test: testfixture$(TEXE) sqlite3$(TEXE) - ./testfixture$(TEXE) $(TOP)/test/veryquick.test - -sqlite3_analyzer.c: sqlite3.c $(TOP)/src/test_stat.c $(TOP)/src/tclsqlite.c $(TOP)/tool/spaceanal.tcl - echo "#define TCLSH 2" > $@ - cat sqlite3.c $(TOP)/src/test_stat.c $(TOP)/src/tclsqlite.c >> $@ - echo "static const char *tclsh_main_loop(void){" >> $@ - echo "static const char *zMainloop = " >> $@ - $(NAWK) -f $(TOP)/tool/tostr.awk $(TOP)/tool/spaceanal.tcl >> $@ - echo "; return zMainloop; }" >> $@ - -sqlite3_analyzer$(TEXE): sqlite3_analyzer.c - $(LTLINK) sqlite3_analyzer.c -o $@ $(LIBTCL) $(TLIBS) - -# Standard install and cleanup targets -# -lib_install: libsqlite3.la - $(INSTALL) -d $(DESTDIR)$(libdir) - $(LTINSTALL) libsqlite3.la $(DESTDIR)$(libdir) - -install: sqlite3$(BEXE) lib_install sqlite3.h sqlite3.pc ${HAVE_TCL:1=tcl_install} - $(INSTALL) -d $(DESTDIR)$(bindir) - $(LTINSTALL) sqlite3$(BEXE) $(DESTDIR)$(bindir) - $(INSTALL) -d $(DESTDIR)$(includedir) - $(INSTALL) -m 0644 sqlite3.h $(DESTDIR)$(includedir) - $(INSTALL) -m 0644 $(TOP)/src/sqlite3ext.h $(DESTDIR)$(includedir) - $(INSTALL) -d $(DESTDIR)$(pkgconfigdir) - $(INSTALL) -m 0644 sqlite3.pc $(DESTDIR)$(pkgconfigdir) - -pkgIndex.tcl: - echo 'package ifneeded sqlite3 $(RELEASE) [list load $(TCLLIBDIR)/libtclsqlite3.so sqlite3]' > $@ -tcl_install: lib_install libtclsqlite3.la pkgIndex.tcl - $(INSTALL) -d $(DESTDIR)$(TCLLIBDIR) - $(LTINSTALL) libtclsqlite3.la $(DESTDIR)$(TCLLIBDIR) - rm -f $(DESTDIR)$(TCLLIBDIR)/libtclsqlite3.la $(DESTDIR)$(TCLLIBDIR)/libtclsqlite3.a - $(INSTALL) -m 0644 pkgIndex.tcl $(DESTDIR)$(TCLLIBDIR) - -clean: - rm -f *.lo *.la *.o sqlite3$(TEXE) libsqlite3.la - rm -f sqlite3.h opcodes.* - rm -rf .libs .deps - rm -f lemon$(BEXE) lempar.c parse.* sqlite*.tar.gz - rm -f mkkeywordhash$(BEXE) keywordhash.h - rm -f $(PUBLISH) - rm -f *.da *.bb *.bbg gmon.out - rm -rf tsrc .target_source - rm -f tclsqlite3$(TEXE) - rm -f testfixture$(TEXE) test.db - rm -f sqlite3.dll sqlite3.lib sqlite3.exp sqlite3.def - rm -f sqlite3.c - rm -f sqlite3_analyzer$(TEXE) sqlite3_analyzer.c - -distclean: clean - rm -f config.log config.status libtool Makefile sqlite3.pc - -# -# Windows section -# -dll: sqlite3.dll - -REAL_LIBOBJ = $(LIBOBJ:%.lo=.libs/%.o) - -$(REAL_LIBOBJ): $(LIBOBJ) - -sqlite3.def: $(REAL_LIBOBJ) - echo 'EXPORTS' >sqlite3.def - nm $(REAL_LIBOBJ) | grep ' T ' | grep ' _sqlite3_' \ - | sed 's/^.* _//' >>sqlite3.def - -sqlite3.dll: $(REAL_LIBOBJ) sqlite3.def - $(TCC) -shared -o $@ sqlite3.def \ - -Wl,"--strip-all" $(REAL_LIBOBJ) diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/Makefile.arm-wince-mingw32ce-gcc b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/Makefile.arm-wince-mingw32ce-gcc deleted file mode 100644 index 89627c4996..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/Makefile.arm-wince-mingw32ce-gcc +++ /dev/null @@ -1,138 +0,0 @@ -#!/usr/make -# -# Makefile for SQLITE -# -# This is a template makefile for SQLite. Most people prefer to -# use the autoconf generated "configure" script to generate the -# makefile automatically. But that does not work for everybody -# and in every situation. If you are having problems with the -# "configure" script, you might want to try this makefile as an -# alternative. Create a copy of this file, edit the parameters -# below and type "make". -# - -#### The directory where to find the mingw32ce tools -MINGW32CE = /opt/mingw32ce/bin - -#### The target prefix of the mingw32ce tools -TARGET = arm-wince-mingw32ce - -#### The toplevel directory of the source tree. This is the directory -# that contains this "Makefile.in" and the "configure.in" script. -# -TOP = ../sqlite - -#### C Compiler and options for use in building executables that -# will run on the platform that is doing the build. -# -BCC = gcc -g -O2 -#BCC = /opt/ancic/bin/c89 -0 - -#### If the target operating system supports the "usleep()" system -# call, then define the HAVE_USLEEP macro for all C modules. -# -USLEEP = -#USLEEP = -DHAVE_USLEEP=1 - -#### If you want the SQLite library to be safe for use within a -# multi-threaded program, then define the following macro -# appropriately: -# -THREADSAFE = -DTHREADSAFE=1 -#THREADSAFE = -DTHREADSAFE=0 - -#### Specify any extra linker options needed to make the library -# thread safe -# -#THREADLIB = -lpthread -THREADLIB = - -#### Specify any extra libraries needed to access required functions. -# -#TLIBS = -lrt # fdatasync on Solaris 8 -TLIBS = - -#### Leave SQLITE_DEBUG undefined for maximum speed. Use SQLITE_DEBUG=1 -# to check for memory leaks. Use SQLITE_DEBUG=2 to print a log of all -# malloc()s and free()s in order to track down memory leaks. -# -# SQLite uses some expensive assert() statements in the inner loop. -# You can make the library go almost twice as fast if you compile -# with -DNDEBUG=1 -# -#OPTS = -DSQLITE_DEBUG=2 -#OPTS = -DSQLITE_DEBUG=1 -#OPTS = -OPTS = -DNDEBUG=1 -DSQLITE_OS_WIN=1 -D_WIN32_WCE=1 -#OPTS += -DHAVE_FDATASYNC=1 - -#### The suffix to add to executable files. ".exe" for windows. -# Nothing for unix. -# -EXE = .exe -#EXE = - -#### C Compile and options for use in building executables that -# will run on the target platform. This is usually the same -# as BCC, unless you are cross-compiling. -# -#TCC = gcc -O6 -#TCC = gcc -g -O0 -Wall -#TCC = gcc -g -O0 -Wall -fprofile-arcs -ftest-coverage -#TCC = /opt/mingw/bin/i386-mingw32-gcc -O6 -TCC = $(MINGW32CE)/$(TARGET)-gcc -O2 -#TCC = /opt/ansic/bin/c89 -O +z -Wl,-a,archive - -#### Tools used to build a static library. -# -#AR = ar cr -#AR = /opt/mingw/bin/i386-mingw32-ar cr -AR = $(MINGW32CE)/$(TARGET)-ar cr -#RANLIB = ranlib -#RANLIB = /opt/mingw/bin/i386-mingw32-ranlib -RANLIB = $(MINGW32CE)/$(TARGET)-ranlib - -#MKSHLIB = gcc -shared -#SO = so -#SHPREFIX = lib -MKSHLIB = $(MINGW32CE)/$(TARGET)-gcc -shared -SO = dll -SHPREFIX = - -#### Extra compiler options needed for programs that use the TCL library. -# -#TCL_FLAGS = -#TCL_FLAGS = -DSTATIC_BUILD=1 -TCL_FLAGS = -I/home/drh/tcltk/8.5linux -#TCL_FLAGS = -I/home/drh/tcltk/8.5win -DSTATIC_BUILD=1 -#TCL_FLAGS = -I/home/drh/tcltk/8.3hpux - -#### Linker options needed to link against the TCL library. -# -#LIBTCL = -ltcl -lm -ldl -LIBTCL = /home/drh/tcltk/8.5linux/libtcl8.5g.a -lm -ldl -#LIBTCL = /home/drh/tcltk/8.5win/libtcl85s.a -lmsvcrt -#LIBTCL = /home/drh/tcltk/8.3hpux/libtcl8.3.a -ldld -lm -lc - -#### Additional objects for SQLite library when TCL support is enabled. -TCLOBJ = -#TCLOBJ = tclsqlite.o - -#### Compiler options needed for programs that use the readline() library. -# -READLINE_FLAGS = -#READLINE_FLAGS = -DHAVE_READLINE=1 -I/usr/include/readline - -#### Linker options needed by programs using readline() must link against. -# -LIBREADLINE = -#LIBREADLINE = -static -lreadline -ltermcap - -#### Which "awk" program provides nawk compatibilty -# -# NAWK = nawk -NAWK = awk - -# You should not have to change anything below this line -############################################################################### -include $(TOP)/main.mk diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/Makefile.in b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/Makefile.in deleted file mode 100644 index b95e47f33b..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/Makefile.in +++ /dev/null @@ -1,957 +0,0 @@ -#!/usr/make -# -# Makefile for SQLITE -# -# This makefile is suppose to be configured automatically using the -# autoconf. But if that does not work for you, you can configure -# the makefile manually. Just set the parameters below to values that -# work well for your system. -# -# If the configure script does not work out-of-the-box, you might -# be able to get it to work by giving it some hints. See the comment -# at the beginning of configure.in for additional information. -# - -# The toplevel directory of the source tree. This is the directory -# that contains this "Makefile.in" and the "configure.in" script. -# -TOP = @srcdir@ - -# C Compiler and options for use in building executables that -# will run on the platform that is doing the build. -# -BCC = @BUILD_CC@ @BUILD_CFLAGS@ - -# C Compile and options for use in building executables that -# will run on the target platform. (BCC and TCC are usually the -# same unless your are cross-compiling.) -# -TCC = @CC@ @CPPFLAGS@ @CFLAGS@ -I. -I${TOP}/src -I${TOP}/ext/rtree - -# Define this for the autoconf-based build, so that the code knows it can -# include the generated config.h -# -TCC += -D_HAVE_SQLITE_CONFIG_H - -# Define -DNDEBUG to compile without debugging (i.e., for production usage) -# Omitting the define will cause extra debugging code to be inserted and -# includes extra comments when "EXPLAIN stmt" is used. -# -TCC += @TARGET_DEBUG@ @XTHREADCONNECT@ - -# Compiler options needed for programs that use the TCL library. -# -TCC += @TCL_INCLUDE_SPEC@ - -# The library that programs using TCL must link against. -# -LIBTCL = @TCL_LIB_SPEC@ @TCL_LIBS@ - -# Compiler options needed for programs that use the readline() library. -# -READLINE_FLAGS = -DHAVE_READLINE=@TARGET_HAVE_READLINE@ @TARGET_READLINE_INC@ - -# The library that programs using readline() must link against. -# -LIBREADLINE = @TARGET_READLINE_LIBS@ - -# Should the database engine be compiled threadsafe -# -TCC += -DSQLITE_THREADSAFE=@SQLITE_THREADSAFE@ - -# Any target libraries which libsqlite must be linked against -# -TLIBS = @LIBS@ - -# Flags controlling use of the in memory btree implementation -# -# SQLITE_TEMP_STORE is 0 to force temporary tables to be in a file, 1 to -# default to file, 2 to default to memory, and 3 to force temporary -# tables to always be in memory. -# -TEMP_STORE = -DSQLITE_TEMP_STORE=@TEMP_STORE@ - -# Enable/disable loadable extensions, and other optional features -# based on configuration. (-DSQLITE_OMIT*, -DSQLITE_ENABLE*). -# The same set of OMIT and ENABLE flags should be passed to the -# LEMON parser generator and the mkkeywordhash tool as well. -OPT_FEATURE_FLAGS = @OPT_FEATURE_FLAGS@ - -TCC += $(OPT_FEATURE_FLAGS) - -# Add in any optional parameters specified on the make commane line -# ie. make "OPTS=-DSQLITE_ENABLE_FOO=1 -DSQLITE_OMIT_FOO=1". -TCC += $(OPTS) - -# Version numbers and release number for the SQLite being compiled. -# -VERSION = @VERSION@ -VERSION_NUMBER = @VERSION_NUMBER@ -RELEASE = @RELEASE@ - -# Filename extensions -# -BEXE = @BUILD_EXEEXT@ -TEXE = @TARGET_EXEEXT@ - -# The following variable is "1" if the configure script was able to locate -# the tclConfig.sh file. It is an empty string otherwise. When this -# variable is "1", the TCL extension library (libtclsqlite3.so) is built -# and installed. -# -HAVE_TCL = @HAVE_TCL@ - -# This is the command to use for tclsh - normally just "tclsh", but we may -# know the specific version we want to use -# -TCLSH_CMD = @TCLSH_CMD@ - -# Where do we want to install the tcl plugin -# -TCLLIBDIR = @TCLLIBDIR@ - -# The suffix used on shared libraries. Ex: ".dll", ".so", ".dylib" -# -SHLIB_SUFFIX = @TCL_SHLIB_SUFFIX@ - -# If gcov support was enabled by the configure script, add the appropriate -# flags here. It's not always as easy as just having the user add the right -# CFLAGS / LDFLAGS, because libtool wants to use CFLAGS when linking, which -# causes build errors with -fprofile-arcs -ftest-coverage with some GCCs. -# Supposedly GCC does the right thing if you use --coverage, but in -# practice it still fails. See: -# -# http://www.mail-archive.com/debian-gcc@lists.debian.org/msg26197.html -# -# for more info. -# -GCOV_CFLAGS1 = -DSQLITE_COVERAGE_TEST=1 -fprofile-arcs -ftest-coverage -GCOV_LDFLAGS1 = -lgcov -USE_GCOV = @USE_GCOV@ -LTCOMPILE_EXTRAS += $(GCOV_CFLAGS$(USE_GCOV)) -LTLINK_EXTRAS += $(GCOV_LDFLAGS$(USE_GCOV)) - - -# The directory into which to store package information for - -# Some standard variables and programs -# -prefix = @prefix@ -exec_prefix = @exec_prefix@ -libdir = @libdir@ -pkgconfigdir = $(libdir)/pkgconfig -bindir = @bindir@ -includedir = @includedir@ -INSTALL = @INSTALL@ -LIBTOOL = ./libtool -ALLOWRELEASE = @ALLOWRELEASE@ - -# libtool compile/link/install -LTCOMPILE = $(LIBTOOL) --mode=compile --tag=CC $(TCC) $(LTCOMPILE_EXTRAS) -LTLINK = $(LIBTOOL) --mode=link $(TCC) $(LTCOMPILE_EXTRAS) @LDFLAGS@ $(LTLINK_EXTRAS) -LTINSTALL = $(LIBTOOL) --mode=install $(INSTALL) - -# nawk compatible awk. -NAWK = @AWK@ - -# You should not have to change anything below this line -############################################################################### - -USE_AMALGAMATION = @USE_AMALGAMATION@ - -# Object files for the SQLite library (non-amalgamation). -# -LIBOBJS0 = alter.lo analyze.lo attach.lo auth.lo \ - backup.lo bitvec.lo btmutex.lo btree.lo build.lo \ - callback.lo complete.lo ctime.lo date.lo delete.lo \ - expr.lo fault.lo fkey.lo \ - fts3.lo fts3_aux.lo fts3_expr.lo fts3_hash.lo fts3_icu.lo fts3_porter.lo \ - fts3_snippet.lo fts3_tokenizer.lo fts3_tokenizer1.lo fts3_write.lo \ - func.lo global.lo hash.lo \ - icu.lo insert.lo journal.lo legacy.lo loadext.lo \ - main.lo malloc.lo mem0.lo mem1.lo mem2.lo mem3.lo mem5.lo \ - memjournal.lo \ - mutex.lo mutex_noop.lo mutex_os2.lo mutex_unix.lo mutex_w32.lo \ - notify.lo opcodes.lo os.lo os_os2.lo os_unix.lo os_win.lo \ - pager.lo parse.lo pcache.lo pcache1.lo pragma.lo prepare.lo printf.lo \ - random.lo resolve.lo rowset.lo rtree.lo select.lo status.lo \ - table.lo tokenize.lo trigger.lo \ - update.lo util.lo vacuum.lo \ - vdbe.lo vdbeapi.lo vdbeaux.lo vdbeblob.lo vdbemem.lo vdbesort.lo \ - vdbetrace.lo wal.lo walker.lo where.lo utf.lo vtab.lo - -# Object files for the amalgamation. -# -LIBOBJS1 = sqlite3.lo - -# Determine the real value of LIBOBJ based on the 'configure' script -# -LIBOBJ = $(LIBOBJS$(USE_AMALGAMATION)) - - -# All of the source code files. -# -SRC = \ - $(TOP)/src/alter.c \ - $(TOP)/src/analyze.c \ - $(TOP)/src/attach.c \ - $(TOP)/src/auth.c \ - $(TOP)/src/backup.c \ - $(TOP)/src/bitvec.c \ - $(TOP)/src/btmutex.c \ - $(TOP)/src/btree.c \ - $(TOP)/src/btree.h \ - $(TOP)/src/btreeInt.h \ - $(TOP)/src/build.c \ - $(TOP)/src/callback.c \ - $(TOP)/src/complete.c \ - $(TOP)/src/ctime.c \ - $(TOP)/src/date.c \ - $(TOP)/src/delete.c \ - $(TOP)/src/expr.c \ - $(TOP)/src/fault.c \ - $(TOP)/src/fkey.c \ - $(TOP)/src/func.c \ - $(TOP)/src/global.c \ - $(TOP)/src/hash.c \ - $(TOP)/src/hash.h \ - $(TOP)/src/hwtime.h \ - $(TOP)/src/insert.c \ - $(TOP)/src/journal.c \ - $(TOP)/src/legacy.c \ - $(TOP)/src/loadext.c \ - $(TOP)/src/main.c \ - $(TOP)/src/malloc.c \ - $(TOP)/src/mem0.c \ - $(TOP)/src/mem1.c \ - $(TOP)/src/mem2.c \ - $(TOP)/src/mem3.c \ - $(TOP)/src/mem5.c \ - $(TOP)/src/memjournal.c \ - $(TOP)/src/mutex.c \ - $(TOP)/src/mutex.h \ - $(TOP)/src/mutex_noop.c \ - $(TOP)/src/mutex_os2.c \ - $(TOP)/src/mutex_unix.c \ - $(TOP)/src/mutex_w32.c \ - $(TOP)/src/notify.c \ - $(TOP)/src/os.c \ - $(TOP)/src/os.h \ - $(TOP)/src/os_common.h \ - $(TOP)/src/os_os2.c \ - $(TOP)/src/os_unix.c \ - $(TOP)/src/os_win.c \ - $(TOP)/src/pager.c \ - $(TOP)/src/pager.h \ - $(TOP)/src/parse.y \ - $(TOP)/src/pcache.c \ - $(TOP)/src/pcache.h \ - $(TOP)/src/pcache1.c \ - $(TOP)/src/pragma.c \ - $(TOP)/src/prepare.c \ - $(TOP)/src/printf.c \ - $(TOP)/src/random.c \ - $(TOP)/src/resolve.c \ - $(TOP)/src/rowset.c \ - $(TOP)/src/select.c \ - $(TOP)/src/status.c \ - $(TOP)/src/shell.c \ - $(TOP)/src/sqlite.h.in \ - $(TOP)/src/sqlite3ext.h \ - $(TOP)/src/sqliteInt.h \ - $(TOP)/src/sqliteLimit.h \ - $(TOP)/src/table.c \ - $(TOP)/src/tclsqlite.c \ - $(TOP)/src/tokenize.c \ - $(TOP)/src/trigger.c \ - $(TOP)/src/utf.c \ - $(TOP)/src/update.c \ - $(TOP)/src/util.c \ - $(TOP)/src/vacuum.c \ - $(TOP)/src/vdbe.c \ - $(TOP)/src/vdbe.h \ - $(TOP)/src/vdbeapi.c \ - $(TOP)/src/vdbeaux.c \ - $(TOP)/src/vdbeblob.c \ - $(TOP)/src/vdbemem.c \ - $(TOP)/src/vdbesort.c \ - $(TOP)/src/vdbetrace.c \ - $(TOP)/src/vdbeInt.h \ - $(TOP)/src/vtab.c \ - $(TOP)/src/wal.c \ - $(TOP)/src/wal.h \ - $(TOP)/src/walker.c \ - $(TOP)/src/where.c - -# Source code for extensions -# -SRC += \ - $(TOP)/ext/fts1/fts1.c \ - $(TOP)/ext/fts1/fts1.h \ - $(TOP)/ext/fts1/fts1_hash.c \ - $(TOP)/ext/fts1/fts1_hash.h \ - $(TOP)/ext/fts1/fts1_porter.c \ - $(TOP)/ext/fts1/fts1_tokenizer.h \ - $(TOP)/ext/fts1/fts1_tokenizer1.c -SRC += \ - $(TOP)/ext/fts2/fts2.c \ - $(TOP)/ext/fts2/fts2.h \ - $(TOP)/ext/fts2/fts2_hash.c \ - $(TOP)/ext/fts2/fts2_hash.h \ - $(TOP)/ext/fts2/fts2_icu.c \ - $(TOP)/ext/fts2/fts2_porter.c \ - $(TOP)/ext/fts2/fts2_tokenizer.h \ - $(TOP)/ext/fts2/fts2_tokenizer.c \ - $(TOP)/ext/fts2/fts2_tokenizer1.c -SRC += \ - $(TOP)/ext/fts3/fts3.c \ - $(TOP)/ext/fts3/fts3.h \ - $(TOP)/ext/fts3/fts3Int.h \ - $(TOP)/ext/fts3/fts3_aux.c \ - $(TOP)/ext/fts3/fts3_expr.c \ - $(TOP)/ext/fts3/fts3_hash.c \ - $(TOP)/ext/fts3/fts3_hash.h \ - $(TOP)/ext/fts3/fts3_icu.c \ - $(TOP)/ext/fts3/fts3_porter.c \ - $(TOP)/ext/fts3/fts3_snippet.c \ - $(TOP)/ext/fts3/fts3_tokenizer.h \ - $(TOP)/ext/fts3/fts3_tokenizer.c \ - $(TOP)/ext/fts3/fts3_tokenizer1.c \ - $(TOP)/ext/fts3/fts3_write.c -SRC += \ - $(TOP)/ext/icu/sqliteicu.h \ - $(TOP)/ext/icu/icu.c -SRC += \ - $(TOP)/ext/rtree/rtree.h \ - $(TOP)/ext/rtree/rtree.c - - -# Generated source code files -# -SRC += \ - keywordhash.h \ - opcodes.c \ - opcodes.h \ - parse.c \ - parse.h \ - config.h \ - sqlite3.h - -# Source code to the test files. -# -TESTSRC = \ - $(TOP)/src/test1.c \ - $(TOP)/src/test2.c \ - $(TOP)/src/test3.c \ - $(TOP)/src/test4.c \ - $(TOP)/src/test5.c \ - $(TOP)/src/test6.c \ - $(TOP)/src/test7.c \ - $(TOP)/src/test8.c \ - $(TOP)/src/test9.c \ - $(TOP)/src/test_autoext.c \ - $(TOP)/src/test_async.c \ - $(TOP)/src/test_backup.c \ - $(TOP)/src/test_btree.c \ - $(TOP)/src/test_config.c \ - $(TOP)/src/test_demovfs.c \ - $(TOP)/src/test_devsym.c \ - $(TOP)/src/test_func.c \ - $(TOP)/src/test_fuzzer.c \ - $(TOP)/src/test_hexio.c \ - $(TOP)/src/test_init.c \ - $(TOP)/src/test_intarray.c \ - $(TOP)/src/test_journal.c \ - $(TOP)/src/test_malloc.c \ - $(TOP)/src/test_multiplex.c \ - $(TOP)/src/test_mutex.c \ - $(TOP)/src/test_onefile.c \ - $(TOP)/src/test_osinst.c \ - $(TOP)/src/test_pcache.c \ - $(TOP)/src/test_quota.c \ - $(TOP)/src/test_rtree.c \ - $(TOP)/src/test_schema.c \ - $(TOP)/src/test_server.c \ - $(TOP)/src/test_superlock.c \ - $(TOP)/src/test_syscall.c \ - $(TOP)/src/test_stat.c \ - $(TOP)/src/test_tclvar.c \ - $(TOP)/src/test_thread.c \ - $(TOP)/src/test_vfs.c \ - $(TOP)/src/test_wholenumber.c \ - $(TOP)/src/test_wsd.c \ - $(TOP)/ext/fts3/fts3_term.c \ - $(TOP)/ext/fts3/fts3_test.c - -# Source code to the library files needed by the test fixture -# -TESTSRC2 = \ - $(TOP)/src/attach.c \ - $(TOP)/src/backup.c \ - $(TOP)/src/bitvec.c \ - $(TOP)/src/btree.c \ - $(TOP)/src/build.c \ - $(TOP)/src/ctime.c \ - $(TOP)/src/date.c \ - $(TOP)/src/expr.c \ - $(TOP)/src/func.c \ - $(TOP)/src/insert.c \ - $(TOP)/src/wal.c \ - $(TOP)/src/mem5.c \ - $(TOP)/src/os.c \ - $(TOP)/src/os_os2.c \ - $(TOP)/src/os_unix.c \ - $(TOP)/src/os_win.c \ - $(TOP)/src/pager.c \ - $(TOP)/src/pragma.c \ - $(TOP)/src/prepare.c \ - $(TOP)/src/printf.c \ - $(TOP)/src/random.c \ - $(TOP)/src/pcache.c \ - $(TOP)/src/pcache1.c \ - $(TOP)/src/select.c \ - $(TOP)/src/tokenize.c \ - $(TOP)/src/utf.c \ - $(TOP)/src/util.c \ - $(TOP)/src/vdbeapi.c \ - $(TOP)/src/vdbeaux.c \ - $(TOP)/src/vdbe.c \ - $(TOP)/src/vdbemem.c \ - $(TOP)/src/vdbetrace.c \ - $(TOP)/src/where.c \ - parse.c \ - $(TOP)/ext/fts3/fts3.c \ - $(TOP)/ext/fts3/fts3_aux.c \ - $(TOP)/ext/fts3/fts3_expr.c \ - $(TOP)/ext/fts3/fts3_term.c \ - $(TOP)/ext/fts3/fts3_tokenizer.c \ - $(TOP)/ext/fts3/fts3_write.c \ - $(TOP)/ext/async/sqlite3async.c - -# Header files used by all library source files. -# -HDR = \ - $(TOP)/src/btree.h \ - $(TOP)/src/btreeInt.h \ - $(TOP)/src/hash.h \ - $(TOP)/src/hwtime.h \ - keywordhash.h \ - $(TOP)/src/mutex.h \ - opcodes.h \ - $(TOP)/src/os.h \ - $(TOP)/src/os_common.h \ - $(TOP)/src/pager.h \ - $(TOP)/src/pcache.h \ - parse.h \ - sqlite3.h \ - $(TOP)/src/sqlite3ext.h \ - $(TOP)/src/sqliteInt.h \ - $(TOP)/src/sqliteLimit.h \ - $(TOP)/src/vdbe.h \ - $(TOP)/src/vdbeInt.h \ - config.h - -# Header files used by extensions -# -EXTHDR += \ - $(TOP)/ext/fts1/fts1.h \ - $(TOP)/ext/fts1/fts1_hash.h \ - $(TOP)/ext/fts1/fts1_tokenizer.h -EXTHDR += \ - $(TOP)/ext/fts2/fts2.h \ - $(TOP)/ext/fts2/fts2_hash.h \ - $(TOP)/ext/fts2/fts2_tokenizer.h -EXTHDR += \ - $(TOP)/ext/fts3/fts3.h \ - $(TOP)/ext/fts3/fts3Int.h \ - $(TOP)/ext/fts3/fts3_hash.h \ - $(TOP)/ext/fts3/fts3_tokenizer.h -EXTHDR += \ - $(TOP)/ext/rtree/rtree.h -EXTHDR += \ - $(TOP)/ext/icu/sqliteicu.h -EXTHDR += \ - $(TOP)/ext/rtree/sqlite3rtree.h - -# This is the default Makefile target. The objects listed here -# are what get build when you type just "make" with no arguments. -# -all: sqlite3.h libsqlite3.la sqlite3$(TEXE) $(HAVE_TCL:1=libtclsqlite3.la) - -Makefile: $(TOP)/Makefile.in - ./config.status - -sqlite3.pc: $(TOP)/sqlite3.pc.in - ./config.status - -libsqlite3.la: $(LIBOBJ) - $(LTLINK) -o $@ $(LIBOBJ) $(TLIBS) \ - ${ALLOWRELEASE} -rpath "$(libdir)" -version-info "8:6:8" - -libtclsqlite3.la: tclsqlite.lo libsqlite3.la - $(LTLINK) -o $@ tclsqlite.lo \ - libsqlite3.la @TCL_STUB_LIB_SPEC@ $(TLIBS) \ - -rpath "$(TCLLIBDIR)" \ - -version-info "8:6:8" \ - -avoid-version - -sqlite3$(TEXE): $(TOP)/src/shell.c libsqlite3.la sqlite3.h - $(LTLINK) $(READLINE_FLAGS) \ - -o $@ $(TOP)/src/shell.c libsqlite3.la \ - $(LIBREADLINE) $(TLIBS) -rpath "$(libdir)" - -# This target creates a directory named "tsrc" and fills it with -# copies of all of the C source code and header files needed to -# build on the target system. 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$(LTCOMPILE) -DSQLITE_CORE -c $(TOP)/ext/fts3/fts3_tokenizer1.c - -fts3_write.lo: $(TOP)/ext/fts3/fts3_write.c $(HDR) $(EXTHDR) - $(LTCOMPILE) -DSQLITE_CORE -c $(TOP)/ext/fts3/fts3_write.c - -rtree.lo: $(TOP)/ext/rtree/rtree.c $(HDR) $(EXTHDR) - $(LTCOMPILE) -DSQLITE_CORE -c $(TOP)/ext/rtree/rtree.c - - -# Rules to build the 'testfixture' application. -# -# If using the amalgamation, use sqlite3.c directly to build the test -# fixture. Otherwise link against libsqlite3.la. (This distinction is -# necessary because the test fixture requires non-API symbols which are -# hidden when the library is built via the amalgamation). -# -TESTFIXTURE_FLAGS = -DTCLSH=1 -DSQLITE_TEST=1 -DSQLITE_CRASH_TEST=1 -TESTFIXTURE_FLAGS += -DSQLITE_SERVER=1 -DSQLITE_PRIVATE="" -DSQLITE_CORE -TESTFIXTURE_FLAGS += -DBUILD_sqlite - -TESTFIXTURE_SRC0 = $(TESTSRC2) libsqlite3.la -TESTFIXTURE_SRC1 = sqlite3.c -TESTFIXTURE_SRC = $(TESTSRC) $(TOP)/src/tclsqlite.c $(TESTFIXTURE_SRC$(USE_AMALGAMATION)) - -testfixture$(TEXE): $(TESTFIXTURE_SRC) - $(LTLINK) -DSQLITE_NO_SYNC=1 $(TEMP_STORE) $(TESTFIXTURE_FLAGS) \ - -o $@ $(TESTFIXTURE_SRC) $(LIBTCL) $(TLIBS) - - -fulltest: testfixture$(TEXE) sqlite3$(TEXE) - ./testfixture$(TEXE) $(TOP)/test/all.test - -soaktest: testfixture$(TEXE) sqlite3$(TEXE) - ./testfixture$(TEXE) $(TOP)/test/all.test -soak=1 - -test: testfixture$(TEXE) sqlite3$(TEXE) - ./testfixture$(TEXE) $(TOP)/test/veryquick.test - -sqlite3_analyzer.c: sqlite3.c $(TOP)/src/test_stat.c $(TOP)/src/tclsqlite.c $(TOP)/tool/spaceanal.tcl - echo "#define TCLSH 2" > $@ - cat sqlite3.c $(TOP)/src/test_stat.c $(TOP)/src/tclsqlite.c >> $@ - echo "static const char *tclsh_main_loop(void){" >> $@ - echo "static const char *zMainloop = " >> $@ - $(NAWK) -f $(TOP)/tool/tostr.awk $(TOP)/tool/spaceanal.tcl >> $@ - echo "; return zMainloop; }" >> $@ - -sqlite3_analyzer$(TEXE): sqlite3_analyzer.c - $(LTLINK) sqlite3_analyzer.c -o $@ $(LIBTCL) $(TLIBS) - -# Standard install and cleanup targets -# -lib_install: libsqlite3.la - $(INSTALL) -d $(DESTDIR)$(libdir) - $(LTINSTALL) libsqlite3.la $(DESTDIR)$(libdir) - -install: sqlite3$(BEXE) lib_install sqlite3.h sqlite3.pc ${HAVE_TCL:1=tcl_install} - $(INSTALL) -d $(DESTDIR)$(bindir) - $(LTINSTALL) sqlite3$(BEXE) $(DESTDIR)$(bindir) - $(INSTALL) -d $(DESTDIR)$(includedir) - $(INSTALL) -m 0644 sqlite3.h $(DESTDIR)$(includedir) - $(INSTALL) -m 0644 $(TOP)/src/sqlite3ext.h $(DESTDIR)$(includedir) - $(INSTALL) -d $(DESTDIR)$(pkgconfigdir) - $(INSTALL) -m 0644 sqlite3.pc $(DESTDIR)$(pkgconfigdir) - -pkgIndex.tcl: - echo 'package ifneeded sqlite3 $(RELEASE) [list load $(TCLLIBDIR)/libtclsqlite3.so sqlite3]' > $@ -tcl_install: lib_install libtclsqlite3.la pkgIndex.tcl - $(INSTALL) -d $(DESTDIR)$(TCLLIBDIR) - $(LTINSTALL) libtclsqlite3.la $(DESTDIR)$(TCLLIBDIR) - rm -f $(DESTDIR)$(TCLLIBDIR)/libtclsqlite3.la $(DESTDIR)$(TCLLIBDIR)/libtclsqlite3.a - $(INSTALL) -m 0644 pkgIndex.tcl $(DESTDIR)$(TCLLIBDIR) - -clean: - rm -f *.lo *.la *.o sqlite3$(TEXE) libsqlite3.la - rm -f sqlite3.h opcodes.* - rm -rf .libs .deps - rm -f lemon$(BEXE) lempar.c parse.* sqlite*.tar.gz - rm -f mkkeywordhash$(BEXE) keywordhash.h - rm -f $(PUBLISH) - rm -f *.da *.bb *.bbg gmon.out - rm -rf tsrc .target_source - rm -f tclsqlite3$(TEXE) - rm -f testfixture$(TEXE) test.db - rm -f sqlite3.dll sqlite3.lib sqlite3.exp sqlite3.def - rm -f sqlite3.c - rm -f sqlite3_analyzer$(TEXE) sqlite3_analyzer.c - -distclean: clean - rm -f config.log config.status libtool Makefile sqlite3.pc - -# -# Windows section -# -dll: sqlite3.dll - -REAL_LIBOBJ = $(LIBOBJ:%.lo=.libs/%.o) - -$(REAL_LIBOBJ): $(LIBOBJ) - -sqlite3.def: $(REAL_LIBOBJ) - echo 'EXPORTS' >sqlite3.def - nm $(REAL_LIBOBJ) | grep ' T ' | grep ' _sqlite3_' \ - | sed 's/^.* _//' >>sqlite3.def - -sqlite3.dll: $(REAL_LIBOBJ) sqlite3.def - $(TCC) -shared -o $@ sqlite3.def \ - -Wl,"--strip-all" $(REAL_LIBOBJ) diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/Makefile.linux-gcc b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/Makefile.linux-gcc deleted file mode 100644 index 2bf76bd3cb..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/Makefile.linux-gcc +++ /dev/null @@ -1,128 +0,0 @@ -#!/usr/make -# -# Makefile for SQLITE -# -# This is a template makefile for SQLite. Most people prefer to -# use the autoconf generated "configure" script to generate the -# makefile automatically. But that does not work for everybody -# and in every situation. If you are having problems with the -# "configure" script, you might want to try this makefile as an -# alternative. Create a copy of this file, edit the parameters -# below and type "make". -# - -#### The toplevel directory of the source tree. This is the directory -# that contains this "Makefile.in" and the "configure.in" script. -# -TOP = ../sqlite - -#### C Compiler and options for use in building executables that -# will run on the platform that is doing the build. -# -BCC = gcc -g -O2 -#BCC = /opt/ancic/bin/c89 -0 - -#### If the target operating system supports the "usleep()" system -# call, then define the HAVE_USLEEP macro for all C modules. -# -#USLEEP = -USLEEP = -DHAVE_USLEEP=1 - -#### If you want the SQLite library to be safe for use within a -# multi-threaded program, then define the following macro -# appropriately: -# -#THREADSAFE = -DTHREADSAFE=1 -THREADSAFE = -DTHREADSAFE=0 - -#### Specify any extra linker options needed to make the library -# thread safe -# -#THREADLIB = -lpthread -THREADLIB = - -#### Specify any extra libraries needed to access required functions. -# -#TLIBS = -lrt # fdatasync on Solaris 8 -TLIBS = - -#### Leave SQLITE_DEBUG undefined for maximum speed. Use SQLITE_DEBUG=1 -# to check for memory leaks. Use SQLITE_DEBUG=2 to print a log of all -# malloc()s and free()s in order to track down memory leaks. -# -# SQLite uses some expensive assert() statements in the inner loop. -# You can make the library go almost twice as fast if you compile -# with -DNDEBUG=1 -# -#OPTS = -DSQLITE_DEBUG=2 -#OPTS = -DSQLITE_DEBUG=1 -#OPTS = -OPTS = -DNDEBUG=1 -OPTS += -DHAVE_FDATASYNC=1 - -#### The suffix to add to executable files. ".exe" for windows. -# Nothing for unix. -# -#EXE = .exe -EXE = - -#### C Compile and options for use in building executables that -# will run on the target platform. This is usually the same -# as BCC, unless you are cross-compiling. -# -TCC = gcc -O6 -#TCC = gcc -g -O0 -Wall -#TCC = gcc -g -O0 -Wall -fprofile-arcs -ftest-coverage -#TCC = /opt/mingw/bin/i386-mingw32-gcc -O6 -#TCC = /opt/ansic/bin/c89 -O +z -Wl,-a,archive - -#### Tools used to build a static library. -# -AR = ar cr -#AR = /opt/mingw/bin/i386-mingw32-ar cr -RANLIB = ranlib -#RANLIB = /opt/mingw/bin/i386-mingw32-ranlib - -MKSHLIB = gcc -shared -SO = so -SHPREFIX = lib -# SO = dll -# SHPREFIX = - -#### Extra compiler options needed for programs that use the TCL library. -# -#TCL_FLAGS = -#TCL_FLAGS = -DSTATIC_BUILD=1 -TCL_FLAGS = -I/home/drh/tcltk/8.5linux -#TCL_FLAGS = -I/home/drh/tcltk/8.5win -DSTATIC_BUILD=1 -#TCL_FLAGS = -I/home/drh/tcltk/8.3hpux - -#### Linker options needed to link against the TCL library. -# -#LIBTCL = -ltcl -lm -ldl -LIBTCL = /home/drh/tcltk/8.5linux/libtcl8.5g.a -lm -ldl -#LIBTCL = /home/drh/tcltk/8.5win/libtcl85s.a -lmsvcrt -#LIBTCL = /home/drh/tcltk/8.3hpux/libtcl8.3.a -ldld -lm -lc - -#### Additional objects for SQLite library when TCL support is enabled. -#TCLOBJ = -TCLOBJ = tclsqlite.o - -#### Compiler options needed for programs that use the readline() library. -# -READLINE_FLAGS = -#READLINE_FLAGS = -DHAVE_READLINE=1 -I/usr/include/readline - -#### Linker options needed by programs using readline() must link against. -# -LIBREADLINE = -#LIBREADLINE = -static -lreadline -ltermcap - -#### Which "awk" program provides nawk compatibilty -# -# NAWK = nawk -NAWK = awk - -# You should not have to change anything below this line -############################################################################### -include $(TOP)/main.mk diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/Makefile.msc b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/Makefile.msc deleted file mode 100644 index e6e5395a05..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/Makefile.msc +++ /dev/null @@ -1,1005 +0,0 @@ -# -# nmake Makefile for SQLite -# - -# The toplevel directory of the source tree. This is the directory -# that contains this "Makefile.msc". -# -TOP = . - -# Set this non-0 to create and use the SQLite amalgamation file. -# -USE_AMALGAMATION = 1 - -# Set this non-0 to use the International Components for Unicode (ICU). -# -USE_ICU = 0 - -# Set this to non-0 to create and use PDBs. -# -SYMBOLS = 1 - -# Set this to one of the following values to enable various debugging -# features. Each level includes the debugging options from the previous -# levels. Currently, the recognized values for DEBUG are: -# -# 0 == NDEBUG: Disables assert() and other runtime diagnostics. -# 1 == Disables NDEBUG and all optimizations and then enables PDBs. -# 2 == SQLITE_DEBUG: Enables various diagnostics messages and code. -# 3 == SQLITE_WIN32_MALLOC_VALIDATE: Validate the Win32 native heap per call. -# 4 == SQLITE_DEBUG_OS_TRACE: Enables output from the OSTRACE() macros. -# 5 == SQLITE_ENABLE_IOTRACE: Enables output from the IOTRACE() macros. -# -DEBUG = 0 - -# Version numbers and release number for the SQLite being compiled. -# -VERSION = 3.7 -VERSION_NUMBER = 3007009 -RELEASE = 3.7.9 - -# C Compiler and options for use in building executables that -# will run on the platform that is doing the build. -# -BCC = cl.exe - -# C Compile and options for use in building executables that -# will run on the target platform. (BCC and TCC are usually the -# same unless your are cross-compiling.) -# -TCC = cl.exe -W3 -DSQLITE_OS_WIN=1 -I. -I$(TOP)\src -fp:precise - -# The mksqlite3c.tcl and mksqlite3h.tcl scripts will pull in -# any extension header files by default. For non-amalgamation -# builds, we need to make sure the compiler can find these. -# -!IF $(USE_AMALGAMATION)==0 -TCC = $(TCC) -I$(TOP)\ext\fts3 -TCC = $(TCC) -I$(TOP)\ext\rtree -!ENDIF - -# Define -DNDEBUG to compile without debugging (i.e., for production usage) -# Omitting the define will cause extra debugging code to be inserted and -# includes extra comments when "EXPLAIN stmt" is used. -# -!IF $(DEBUG)==0 -TCC = $(TCC) -DNDEBUG -!ENDIF - -!IF $(DEBUG)>1 -TCC = $(TCC) -DSQLITE_DEBUG -!ENDIF - -!IF $(DEBUG)>3 -TCC = $(TCC) -DSQLITE_DEBUG_OS_TRACE=1 -!ENDIF - -!IF $(DEBUG)>4 -TCC = $(TCC) -DSQLITE_ENABLE_IOTRACE -!ENDIF - -# -# Prevent warnings about "insecure" runtime library functions being used. -# -TCC = $(TCC) -D_CRT_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS - -# -# Use native Win32 heap instead of malloc/free? -# -# TCC = $(TCC) -DSQLITE_WIN32_MALLOC=1 - -# -# Validate the heap on every call into the native Win32 heap subsystem? -# -!IF $(DEBUG)>2 -TCC = $(TCC) -DSQLITE_WIN32_MALLOC_VALIDATE=1 -!ENDIF - -# The locations of the Tcl header and library files. Also, the library that -# non-stubs enabled programs using Tcl must link against. These variables -# (TCLINCDIR, TCLLIBDIR, and LIBTCL) may be overridden via the environment -# prior to running nmake in order to match the actual installed location and -# version on this machine. -# -!if "$(TCLINCDIR)" == "" -TCLINCDIR = c:\tcl\include -!endif - -!if "$(TCLLIBDIR)" == "" -TCLLIBDIR = c:\tcl\lib -!endif - -!if "$(LIBTCL)" == "" -LIBTCL = tcl85.lib -!endif - -# The locations of the ICU header and library files. These variables -# (ICUINCDIR, ICULIBDIR, and LIBICU) may be overridden via the environment -# prior to running nmake in order to match the actual installed location on -# this machine. -# -!if "$(ICUINCDIR)" == "" -ICUINCDIR = c:\icu\include -!endif - -!if "$(ICULIBDIR)" == "" -ICULIBDIR = c:\icu\lib -!endif - -!if "$(LIBICU)" == "" -LIBICU = icuuc.lib icuin.lib -!endif - -# This is the command to use for tclsh - normally just "tclsh", but we may -# know the specific version we want to use. This variable (TCLSH_CMD) may be -# overridden via the environment prior to running nmake in order to select a -# specific Tcl shell to use. -# -!if "$(TCLSH_CMD)" == "" -TCLSH_CMD = tclsh85 -!endif - -# Compiler options needed for programs that use the readline() library. -# -READLINE_FLAGS = -DHAVE_READLINE=0 - -# The library that programs using readline() must link against. -# -LIBREADLINE = - -# Should the database engine be compiled threadsafe -# -TCC = $(TCC) -DSQLITE_THREADSAFE=1 - -# Do threads override each others locks by default (1), or do we test (-1) -# -TCC = $(TCC) -DSQLITE_THREAD_OVERRIDE_LOCK=-1 - -# Any target libraries which libsqlite must be linked against -# -!if "$(TLIBS)" == "" -TLIBS = -!endif - -# Flags controlling use of the in memory btree implementation -# -# SQLITE_TEMP_STORE is 0 to force temporary tables to be in a file, 1 to -# default to file, 2 to default to memory, and 3 to force temporary -# tables to always be in memory. -# -TCC = $(TCC) -DSQLITE_TEMP_STORE=1 - -# Enable/disable loadable extensions, and other optional features -# based on configuration. 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$(LTCOMPILE) -c $(TOP)\src\vdbe.c - -vdbeapi.lo: $(TOP)\src\vdbeapi.c $(HDR) - $(LTCOMPILE) -c $(TOP)\src\vdbeapi.c - -vdbeaux.lo: $(TOP)\src\vdbeaux.c $(HDR) - $(LTCOMPILE) -c $(TOP)\src\vdbeaux.c - -vdbeblob.lo: $(TOP)\src\vdbeblob.c $(HDR) - $(LTCOMPILE) -c $(TOP)\src\vdbeblob.c - -vdbemem.lo: $(TOP)\src\vdbemem.c $(HDR) - $(LTCOMPILE) -c $(TOP)\src\vdbemem.c - -vdbesort.lo: $(TOP)\src\vdbesort.c $(HDR) - $(LTCOMPILE) -c $(TOP)\src\vdbesort.c - -vdbetrace.lo: $(TOP)\src\vdbetrace.c $(HDR) - $(LTCOMPILE) -c $(TOP)\src\vdbetrace.c - -vtab.lo: $(TOP)\src\vtab.c $(HDR) - $(LTCOMPILE) -c $(TOP)\src\vtab.c - -wal.lo: $(TOP)\src\wal.c $(HDR) - $(LTCOMPILE) -c $(TOP)\src\wal.c - -walker.lo: $(TOP)\src\walker.c $(HDR) - $(LTCOMPILE) -c $(TOP)\src\walker.c - -where.lo: $(TOP)\src\where.c $(HDR) - $(LTCOMPILE) -c $(TOP)\src\where.c - -tclsqlite.lo: $(TOP)\src\tclsqlite.c $(HDR) - $(LTCOMPILE) -DUSE_TCL_STUBS=1 -DBUILD_sqlite -I$(TCLINCDIR) -c $(TOP)\src\tclsqlite.c - -tclsqlite-shell.lo: $(TOP)\src\tclsqlite.c $(HDR) - $(LTCOMPILE) -DTCLSH=1 -DBUILD_sqlite -I$(TCLINCDIR) -c $(TOP)\src\tclsqlite.c - -tclsqlite3.exe: tclsqlite-shell.lo libsqlite3.lib - $(LTLINK) tclsqlite-shell.lo \ - /link $(LTLINKOPTS) $(LTLIBPATHS) libsqlite3.lib $(LTLIBS) $(TLIBS) - -# Rules to build opcodes.c and opcodes.h -# -opcodes.c: opcodes.h $(TOP)\mkopcodec.awk - $(NAWK) -f $(TOP)\mkopcodec.awk opcodes.h > opcodes.c - -opcodes.h: parse.h $(TOP)\src\vdbe.c $(TOP)\mkopcodeh.awk - type parse.h $(TOP)\src\vdbe.c | $(NAWK) -f $(TOP)\mkopcodeh.awk > opcodes.h - -# Rules to build parse.c and parse.h - the outputs of lemon. -# -parse.h: parse.c - -parse.c: $(TOP)\src\parse.y lemon.exe $(TOP)\addopcodes.awk - del /Q parse.y parse.h parse.h.temp - copy $(TOP)\src\parse.y . - .\lemon.exe $(OPT_FEATURE_FLAGS) $(OPTS) parse.y - move parse.h parse.h.temp - $(NAWK) -f $(TOP)\addopcodes.awk parse.h.temp > parse.h - -sqlite3.h: $(TOP)\src\sqlite.h.in $(TOP)\manifest.uuid $(TOP)\VERSION - $(TCLSH_CMD) $(TOP)\tool\mksqlite3h.tcl $(TOP) > sqlite3.h - 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-fts2_tokenizer1.lo: $(TOP)\ext\fts2\fts2_tokenizer1.c $(HDR) $(EXTHDR) - $(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts2\fts2_tokenizer1.c - -fts3.lo: $(TOP)\ext\fts3\fts3.c $(HDR) $(EXTHDR) - $(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3.c - -fts3_aux.lo: $(TOP)\ext\fts3\fts3_aux.c $(HDR) $(EXTHDR) - $(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_aux.c - -fts3_expr.lo: $(TOP)\ext\fts3\fts3_expr.c $(HDR) $(EXTHDR) - $(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_expr.c - -fts3_hash.lo: $(TOP)\ext\fts3\fts3_hash.c $(HDR) $(EXTHDR) - $(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_hash.c - -fts3_icu.lo: $(TOP)\ext\fts3\fts3_icu.c $(HDR) $(EXTHDR) - $(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_icu.c - -fts3_snippet.lo: $(TOP)\ext\fts3\fts3_snippet.c $(HDR) $(EXTHDR) - $(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_snippet.c - -fts3_porter.lo: $(TOP)\ext\fts3\fts3_porter.c $(HDR) $(EXTHDR) - $(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_porter.c - -fts3_tokenizer.lo: $(TOP)\ext\fts3\fts3_tokenizer.c $(HDR) $(EXTHDR) - $(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_tokenizer.c - -fts3_tokenizer1.lo: $(TOP)\ext\fts3\fts3_tokenizer1.c $(HDR) $(EXTHDR) - $(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_tokenizer1.c - -fts3_write.lo: $(TOP)\ext\fts3\fts3_write.c $(HDR) $(EXTHDR) - $(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\fts3\fts3_write.c - -rtree.lo: $(TOP)\ext\rtree\rtree.c $(HDR) $(EXTHDR) - $(LTCOMPILE) -DSQLITE_CORE -c $(TOP)\ext\rtree\rtree.c - - -# Rules to build the 'testfixture' application. -# -# If using the amalgamation, use sqlite3.c directly to build the test -# fixture. Otherwise link against libsqlite3.lib. (This distinction is -# necessary because the test fixture requires non-API symbols which are -# hidden when the library is built via the amalgamation). -# -TESTFIXTURE_FLAGS = -DTCLSH=1 -DSQLITE_TEST=1 -DSQLITE_CRASH_TEST=1 -TESTFIXTURE_FLAGS = $(TESTFIXTURE_FLAGS) -DSQLITE_SERVER=1 -DSQLITE_PRIVATE="" -DSQLITE_CORE - -TESTFIXTURE_SRC0 = $(TESTSRC2) libsqlite3.lib -TESTFIXTURE_SRC1 = sqlite3.c -!IF $(USE_AMALGAMATION)==0 -TESTFIXTURE_SRC = $(TESTSRC) $(TOP)\src\tclsqlite.c $(TESTFIXTURE_SRC0) -!ELSE -TESTFIXTURE_SRC = $(TESTSRC) $(TOP)\src\tclsqlite.c $(TESTFIXTURE_SRC1) -!ENDIF - -testfixture.exe: $(TESTFIXTURE_SRC) $(HDR) - $(LTLINK) -DSQLITE_NO_SYNC=1 $(TESTFIXTURE_FLAGS) \ - -DBUILD_sqlite -I$(TCLINCDIR) \ - $(TESTFIXTURE_SRC) \ - /link $(LTLINKOPTS) $(LTLIBPATHS) $(LTLIBS) $(TLIBS) - -fulltest: testfixture.exe sqlite3.exe - .\testfixture.exe $(TOP)\test\all.test - -soaktest: testfixture.exe sqlite3.exe - .\testfixture.exe $(TOP)\test\all.test -soak=1 - -test: testfixture.exe sqlite3.exe - .\testfixture.exe $(TOP)\test\veryquick.test - -sqlite3_analyzer.c: sqlite3.c $(TOP)\src\test_stat.c $(TOP)\src\tclsqlite.c $(TOP)\tool\spaceanal.tcl - copy sqlite3.c + $(TOP)\src\test_stat.c + $(TOP)\src\tclsqlite.c $@ - echo static const char *tclsh_main_loop(void){ >> $@ - echo static const char *zMainloop = >> $@ - $(NAWK) -f $(TOP)\tool\tostr.awk $(TOP)\tool\spaceanal.tcl >> $@ - echo ; return zMainloop; } >> $@ - -sqlite3_analyzer.exe: sqlite3_analyzer.c - $(LTLINK) -DBUILD_sqlite -DTCLSH=2 -I$(TCLINCDIR) sqlite3_analyzer.c \ - /link $(LTLINKOPTS) $(LTLIBPATHS) $(LTLIBS) $(TLIBS) - -clean: - del /Q *.lo *.ilk *.lib *.obj *.pdb sqlite3.exe libsqlite3.lib - del /Q sqlite3.h opcodes.c opcodes.h - del /Q lemon.exe lempar.c parse.* - del /Q mkkeywordhash.exe keywordhash.h - -rmdir /Q/S tsrc - del /Q .target_source - del /Q tclsqlite3.exe - del /Q testfixture.exe testfixture.exp test.db - del /Q sqlite3.dll sqlite3.lib sqlite3.exp sqlite3.def - del /Q sqlite3.c - del /Q sqlite3_analyzer.exe sqlite3_analyzer.exp sqlite3_analyzer.c - -# -# Windows section -# -dll: sqlite3.dll - -sqlite3.def: libsqlite3.lib - echo EXPORTS > sqlite3.def - dumpbin /all libsqlite3.lib \ - | $(NAWK) "/ 1 _?sqlite3_/ { sub(/^.* _?/,\"\");print }" \ - | sort >> sqlite3.def - -sqlite3.dll: $(LIBOBJ) sqlite3.def - link $(LTLINKOPTS) $(LTLIBPATHS) /DLL /DEF:sqlite3.def /OUT:$@ $(LIBOBJ) $(LTLIBS) $(TLIBS) diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/Makefile.vxworks b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/Makefile.vxworks deleted file mode 100644 index 4c4e032827..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/Makefile.vxworks +++ /dev/null @@ -1,663 +0,0 @@ -#!/usr/make -# -# Makefile for SQLITE on VxWorks - -ifeq ($(FORCPU),) - FORCPU = SH32gnule -endif - -TOOL_FAMILY = gnu - -include $(WIND_USR)/tool/gnu/make.$(FORCPU) - -#### The toplevel directory of the source tree. This is the directory -# that contains this "Makefile.in" and the "configure.in" script. -# -TOP = . - -#### C Compiler and options for use in building executables that -# will run on the platform that is doing the build. -# -BCC = gcc -g -O2 -#BCC = /opt/ancic/bin/c89 -0 - -#### If the target operating system supports the "usleep()" system -# call, then define the HAVE_USLEEP macro for all C modules. -# -USLEEP = -#USLEEP = -DHAVE_USLEEP=1 - -#### If you want the SQLite library to be safe for use within a -# multi-threaded program, then define the following macro -# appropriately: -# -THREADSAFE = -DSQLITE_THREADSAFE=1 -#THREADSAFE = -DSQLITE_THREADSAFE=0 - -#### Specify any extra linker options needed to make the library -# thread safe -# -#THREADLIB = -lpthread -THREADLIB = - -#### Specify any extra libraries needed to access required functions. -# -ifeq ($(CPU),SH32) - # for SH4 shared library - TLIBS_SHARED += -L$(WIND_USR)/lib/sh/SH32/commonle/PIC -else - # for all other CPUs shared library - TLIBS_SHARED += $(LD_LINK_PATH_ATEND) $(LD_PARTIAL_LAST_FLAGS) -endif -# for static library -TLIBS += $(LD_LINK_PATH_ATEND) $(LD_PARTIAL_LAST_FLAGS) - -#### Leave SQLITE_DEBUG undefined for maximum speed. Use SQLITE_DEBUG=1 -# to check for memory leaks. Use SQLITE_DEBUG=2 to print a log of all -# malloc()s and free()s in order to track down memory leaks. -# -# SQLite uses some expensive assert() statements in the inner loop. -# You can make the library go almost twice as fast if you compile -# with -DNDEBUG=1 -# -#OPTS = -DSQLITE_DEBUG=2 -#OPTS = -DSQLITE_DEBUG=1 -#OPTS = -OPTS = -DNDEBUG=1 -DSQLITE_OS_UNIX=1 $(THREADSAFE) -OPTS += -DSQLITE_OMIT_LOAD_EXTENSION=1 -OPTS += -DSQLITE_ENABLE_LOCKING_STYLE=1 -OPTS += -DSQLITE_THREAD_OVERRIDE_LOCK=0 -OPTS += -DSQLITE_ENABLE_COLUMN_METADATA=1 -OPTS += -DHAVE_FDATASYNC=1 - -#### The suffix to add to executable files. ".exe" for windows. -# Nothing for unix. -# -EXE = .vxe -#EXE = - -#### C Compile and options for use in building executables that -# will run on the target platform. This is usually the same -# as BCC, unless you are cross-compiling. -# -#TCC = gcc -O6 -#TCC = gcc -g -O0 -Wall -#TCC = gcc -g -O0 -Wall -fprofile-arcs -ftest-coverage -#TCC = /opt/mingw/bin/i386-mingw32-gcc -O6 -TCC = $(CC) $(DEFINE_CC) -O2 -g -mrtp $(CC_ARCH_SPEC) -D_REENTRANT=1 -D_VX_CPU=_VX_$(CPU) -D_VX_TOOL_FAMILY=$(TOOL_FAMILY) -D_VX_TOOL=$(TOOL) -TCC += -I$(WIND_USR)/h -I$(WIND_USR)/h/wrn/coreip -#TCC = /opt/ansic/bin/c89 -O +z -Wl,-a,archive - -#TCC_SHARED = $(TCC) -fPIC -TCC_SHARED = $(TCC) - -#### Tools used to build a static library. -# -#ARX = ar cr -#ARX = /opt/mingw/bin/i386-mingw32-ar cr -AR += cr -#RANLIB = ranlib -#RANLIB = /opt/mingw/bin/i386-mingw32-ranlib - -#MKSHLIB = gcc -shared -#SO = so -#SHPREFIX = lib -MKSHLIB = $(CC) $(DEFINE_CC) -mrtp -shared $(CC_ARCH_SPEC) -D_VX_CPU=_VX_$(CPU) -D_VX_TOOL_FAMILY=$(TOOL_FAMILY) -D_VX_TOOL=$(TOOL) -SO = so -SHPREFIX = lib - -#### Extra compiler options needed for programs that use the TCL library. -# -#TCL_FLAGS = -#TCL_FLAGS = -DSTATIC_BUILD=1 -TCL_FLAGS = -I/home/drh/tcltk/8.5linux -#TCL_FLAGS = -I/home/drh/tcltk/8.5win -DSTATIC_BUILD=1 -#TCL_FLAGS = -I/home/drh/tcltk/8.3hpux - -#### Linker options needed to link against the TCL library. -# -#LIBTCL = -ltcl -lm -ldl -LIBTCL = /home/drh/tcltk/8.5linux/libtcl8.5g.a -lm -ldl -#LIBTCL = /home/drh/tcltk/8.5win/libtcl85s.a -lmsvcrt -#LIBTCL = /home/drh/tcltk/8.3hpux/libtcl8.3.a -ldld -lm -lc - -#### Additional objects for SQLite library when TCL support is enabled. -TCLOBJ = -#TCLOBJ = tclsqlite.o - -#### Compiler options needed for programs that use the readline() library. -# -READLINE_FLAGS = -#READLINE_FLAGS = -DHAVE_READLINE=1 -I/usr/include/readline - -#### Linker options needed by programs using readline() must link against. -# -LIBREADLINE = -#LIBREADLINE = -static -lreadline -ltermcap - -#### Which "awk" program provides nawk compatibilty -# -# NAWK = nawk -NAWK = awk - - -#### Pasted and adapted main.mk file -############################################################################### -# The following macros should be defined before this script is -# invoked: -# -# TOP The toplevel directory of the source tree. This is the -# directory that contains this "Makefile.in" and the -# "configure.in" script. -# -# BCC C Compiler and options for use in building executables that -# will run on the platform that is doing the build. -# -# THREADLIB Specify any extra linker options needed to make the library -# thread safe -# -# OPTS Extra compiler command-line options. -# -# EXE The suffix to add to executable files. ".exe" for windows -# and "" for Unix. -# -# TCC C Compiler and options for use in building executables that -# will run on the target platform. This is usually the same -# as BCC, unless you are cross-compiling. -# -# AR Tools used to build a static library. -# RANLIB -# -# TCL_FLAGS Extra compiler options needed for programs that use the -# TCL library. -# -# LIBTCL Linker options needed to link against the TCL library. -# -# READLINE_FLAGS Compiler options needed for programs that use the -# readline() library. -# -# LIBREADLINE Linker options needed by programs using readline() must -# link against. -# -# NAWK Nawk compatible awk program. Older (obsolete?) solaris -# systems need this to avoid using the original AT&T AWK. -# -# Once the macros above are defined, the rest of this make script will -# build the SQLite library and testing tools. -################################################################################ - -# This is how we compile -# -TCCX = $(TCC) $(OPTS) -I. -I$(TOP)/src -I$(TOP) -TCCX_SHARED = $(TCC_SHARED) $(OPTS) -I. -I$(TOP)/src -I$(TOP) \ - -I$(TOP)/ext/rtree -I$(TOP)/ext/icu -I$(TOP)/ext/fts3 \ - -I$(TOP)/ext/async - -# Object files for the SQLite library. -# -LIBOBJ+= alter.o analyze.o attach.o auth.o \ - backup.o bitvec.o btmutex.o btree.o build.o \ - callback.o complete.o date.o delete.o expr.o fault.o \ - fts3.o fts3_expr.o fts3_hash.o fts3_icu.o fts3_porter.o \ - fts3_tokenizer.o fts3_tokenizer1.o \ - func.o global.o hash.o \ - icu.o insert.o journal.o legacy.o loadext.o \ - main.o malloc.o mem0.o mem1.o mem2.o mem3.o mem5.o \ - memjournal.o \ - mutex.o mutex_noop.o mutex_os2.o mutex_unix.o mutex_w32.o \ - notify.o opcodes.o os.o os_os2.o os_unix.o os_win.o \ - pager.o parse.o pcache.o pcache1.o pragma.o prepare.o printf.o \ - random.o resolve.o rowset.o rtree.o select.o status.o \ - table.o tokenize.o trigger.o \ - update.o util.o vacuum.o \ - vdbe.o vdbeapi.o vdbeaux.o vdbeblob.o vdbemem.o \ - walker.o where.o utf.o vtab.o - - - -# All of the source code files. -# -SRC = \ - $(TOP)/src/alter.c \ - $(TOP)/src/analyze.c \ - $(TOP)/src/attach.c \ - $(TOP)/src/auth.c \ - $(TOP)/src/backup.c \ - $(TOP)/src/bitvec.c \ - $(TOP)/src/btmutex.c \ - $(TOP)/src/btree.c \ - $(TOP)/src/btree.h \ - $(TOP)/src/btreeInt.h \ - $(TOP)/src/build.c \ - $(TOP)/src/callback.c \ - $(TOP)/src/complete.c \ - $(TOP)/src/ctime.c \ - $(TOP)/src/date.c \ - $(TOP)/src/delete.c \ - $(TOP)/src/expr.c \ - $(TOP)/src/fault.c \ - $(TOP)/src/func.c \ - $(TOP)/src/global.c \ - $(TOP)/src/hash.c \ - $(TOP)/src/hash.h \ - $(TOP)/src/hwtime.h \ - $(TOP)/src/insert.c \ - $(TOP)/src/journal.c \ - $(TOP)/src/legacy.c \ - $(TOP)/src/loadext.c \ - $(TOP)/src/main.c \ - $(TOP)/src/malloc.c \ - $(TOP)/src/mem0.c \ - $(TOP)/src/mem1.c \ - $(TOP)/src/mem2.c \ - $(TOP)/src/mem3.c \ - $(TOP)/src/mem5.c \ - $(TOP)/src/memjournal.c \ - $(TOP)/src/mutex.c \ - $(TOP)/src/mutex.h \ - $(TOP)/src/mutex_noop.c \ - $(TOP)/src/mutex_os2.c \ - $(TOP)/src/mutex_unix.c \ - $(TOP)/src/mutex_w32.c \ - $(TOP)/src/notify.c \ - $(TOP)/src/os.c \ - $(TOP)/src/os.h \ - $(TOP)/src/os_common.h \ - $(TOP)/src/os_os2.c \ - $(TOP)/src/os_unix.c \ - $(TOP)/src/os_win.c \ - $(TOP)/src/pager.c \ - $(TOP)/src/pager.h \ - $(TOP)/src/parse.y \ - $(TOP)/src/pcache.c \ - $(TOP)/src/pcache.h \ - $(TOP)/src/pcache1.c \ - $(TOP)/src/pragma.c \ - $(TOP)/src/prepare.c \ - $(TOP)/src/printf.c \ - $(TOP)/src/random.c \ - $(TOP)/src/resolve.c \ - $(TOP)/src/rowset.c \ - $(TOP)/src/select.c \ - $(TOP)/src/status.c \ - $(TOP)/src/shell.c \ - $(TOP)/src/sqlite.h.in \ - $(TOP)/src/sqlite3ext.h \ - $(TOP)/src/sqliteInt.h \ - $(TOP)/src/sqliteLimit.h \ - $(TOP)/src/table.c \ - $(TOP)/src/tclsqlite.c \ - $(TOP)/src/tokenize.c \ - $(TOP)/src/trigger.c \ - $(TOP)/src/utf.c \ - $(TOP)/src/update.c \ - $(TOP)/src/util.c \ - $(TOP)/src/vacuum.c \ - $(TOP)/src/vdbe.c \ - $(TOP)/src/vdbe.h \ - $(TOP)/src/vdbeapi.c \ - $(TOP)/src/vdbeaux.c \ - $(TOP)/src/vdbeblob.c \ - $(TOP)/src/vdbemem.c \ - $(TOP)/src/vdbeInt.h \ - $(TOP)/src/vtab.c \ - $(TOP)/src/walker.c \ - $(TOP)/src/where.c - -# Source code for extensions -# -SRC += \ - $(TOP)/ext/fts1/fts1.c \ - $(TOP)/ext/fts1/fts1.h \ - $(TOP)/ext/fts1/fts1_hash.c \ - $(TOP)/ext/fts1/fts1_hash.h \ - $(TOP)/ext/fts1/fts1_porter.c \ - $(TOP)/ext/fts1/fts1_tokenizer.h \ - $(TOP)/ext/fts1/fts1_tokenizer1.c -SRC += \ - $(TOP)/ext/fts2/fts2.c \ - $(TOP)/ext/fts2/fts2.h \ - $(TOP)/ext/fts2/fts2_hash.c \ - $(TOP)/ext/fts2/fts2_hash.h \ - $(TOP)/ext/fts2/fts2_icu.c \ - $(TOP)/ext/fts2/fts2_porter.c \ - $(TOP)/ext/fts2/fts2_tokenizer.h \ - $(TOP)/ext/fts2/fts2_tokenizer.c \ - $(TOP)/ext/fts2/fts2_tokenizer1.c -SRC += \ - $(TOP)/ext/fts3/fts3.c \ - $(TOP)/ext/fts3/fts3.h \ - $(TOP)/ext/fts3/fts3_expr.c \ - $(TOP)/ext/fts3/fts3_expr.h \ - $(TOP)/ext/fts3/fts3_hash.c \ - $(TOP)/ext/fts3/fts3_hash.h \ - $(TOP)/ext/fts3/fts3_icu.c \ - $(TOP)/ext/fts3/fts3_porter.c \ - $(TOP)/ext/fts3/fts3_tokenizer.h \ - $(TOP)/ext/fts3/fts3_tokenizer.c \ - $(TOP)/ext/fts3/fts3_tokenizer1.c -SRC += \ - $(TOP)/ext/icu/sqliteicu.h \ - $(TOP)/ext/icu/icu.c -SRC += \ - $(TOP)/ext/rtree/rtree.h \ - $(TOP)/ext/rtree/rtree.c - - -# Generated source code files -# -SRC += \ - keywordhash.h \ - opcodes.c \ - opcodes.h \ - parse.c \ - parse.h \ - sqlite3.h - - -# Source code to the test files. -# -TESTSRC = \ - $(TOP)/src/test1.c \ - $(TOP)/src/test2.c \ - $(TOP)/src/test3.c \ - $(TOP)/src/test4.c \ - $(TOP)/src/test5.c \ - $(TOP)/src/test6.c \ - $(TOP)/src/test7.c \ - $(TOP)/src/test8.c \ - $(TOP)/src/test9.c \ - $(TOP)/src/test_autoext.c \ - $(TOP)/src/test_async.c \ - $(TOP)/src/test_backup.c \ - $(TOP)/src/test_btree.c \ - $(TOP)/src/test_config.c \ - $(TOP)/src/test_devsym.c \ - $(TOP)/src/test_func.c \ - $(TOP)/src/test_hexio.c \ - $(TOP)/src/test_journal.c \ - $(TOP)/src/test_malloc.c \ - $(TOP)/src/test_md5.c \ - $(TOP)/src/test_mutex.c \ - $(TOP)/src/test_onefile.c \ - $(TOP)/src/test_osinst.c \ - $(TOP)/src/test_pcache.c \ - $(TOP)/src/test_schema.c \ - $(TOP)/src/test_server.c \ - $(TOP)/src/test_tclvar.c \ - $(TOP)/src/test_thread.c \ - $(TOP)/src/test_vfs.c \ - $(TOP)/src/test_wsd.c \ - -#TESTSRC += $(TOP)/ext/fts2/fts2_tokenizer.c -#TESTSRC += $(TOP)/ext/fts3/fts3_tokenizer.c - -TESTSRC2 = \ - $(TOP)/src/attach.c $(TOP)/src/backup.c $(TOP)/src/btree.c \ - $(TOP)/src/build.c $(TOP)/src/ctime.c $(TOP)/src/date.c \ - $(TOP)/src/expr.c $(TOP)/src/func.c $(TOP)/src/insert.c $(TOP)/src/os.c \ - $(TOP)/src/os_os2.c $(TOP)/src/os_unix.c $(TOP)/src/os_win.c \ - $(TOP)/src/pager.c $(TOP)/src/pragma.c $(TOP)/src/prepare.c \ - $(TOP)/src/printf.c $(TOP)/src/random.c $(TOP)/src/pcache.c \ - $(TOP)/src/pcache1.c $(TOP)/src/select.c $(TOP)/src/tokenize.c \ - $(TOP)/src/utf.c $(TOP)/src/util.c $(TOP)/src/vdbeapi.c $(TOP)/src/vdbeaux.c \ - $(TOP)/src/vdbe.c $(TOP)/src/vdbemem.c $(TOP)/src/where.c parse.c \ - $(TOP)/ext/fts3/fts3.c $(TOP)/ext/fts3/fts3_expr.c \ - $(TOP)/ext/fts3/fts3_tokenizer.c \ - $(TOP)/ext/async/sqlite3async.c - -# Header files used by all library source files. -# -HDR = \ - $(TOP)/src/btree.h \ - $(TOP)/src/btreeInt.h \ - $(TOP)/src/hash.h \ - $(TOP)/src/hwtime.h \ - keywordhash.h \ - $(TOP)/src/mutex.h \ - opcodes.h \ - $(TOP)/src/os.h \ - $(TOP)/src/os_common.h \ - $(TOP)/src/pager.h \ - $(TOP)/src/pcache.h \ - parse.h \ - sqlite3.h \ - $(TOP)/src/sqlite3ext.h \ - $(TOP)/src/sqliteInt.h \ - $(TOP)/src/sqliteLimit.h \ - $(TOP)/src/vdbe.h \ - $(TOP)/src/vdbeInt.h - -# Header files used by extensions -# -EXTHDR += \ - $(TOP)/ext/fts1/fts1.h \ - $(TOP)/ext/fts1/fts1_hash.h \ - $(TOP)/ext/fts1/fts1_tokenizer.h -EXTHDR += \ - $(TOP)/ext/fts2/fts2.h \ - $(TOP)/ext/fts2/fts2_hash.h \ - $(TOP)/ext/fts2/fts2_tokenizer.h -EXTHDR += \ - $(TOP)/ext/fts3/fts3.h \ - $(TOP)/ext/fts3/fts3_expr.h \ - $(TOP)/ext/fts3/fts3_hash.h \ - $(TOP)/ext/fts3/fts3_tokenizer.h -EXTHDR += \ - $(TOP)/ext/rtree/rtree.h -EXTHDR += \ - $(TOP)/ext/icu/sqliteicu.h - -# This is the default Makefile target. The objects listed here -# are what get build when you type just "make" with no arguments. -# -all: sqlite3.h libsqlite3.a sqlite3$(EXE) - -libsqlite3.a: $(LIBOBJ) - $(AR) libsqlite3.a $(LIBOBJ) - $(RANLIB) libsqlite3.a - -$(SHPREFIX)sqlite3.$(SO): $(LIBOBJ) - $(MKSHLIB) -o $(SHPREFIX)sqlite3.$(SO) $(LIBOBJ) $(TLIBS_SHARED) - -sqlite3$(EXE): $(TOP)/src/shell.c libsqlite3.a sqlite3.h - $(TCCX) $(READLINE_FLAGS) -o sqlite3$(EXE) \ - $(TOP)/src/shell.c \ - $(LIBREADLINE) $(TLIBS) $(THREADLIB) -L. -lsqlite3 - -# This target creates a directory named "tsrc" and fills it with -# copies of all of the C source code and header files needed to -# build on the target system. Some of the C source code and header -# files are automatically generated. This target takes care of -# all that automatic generation. -# -target_source: $(SRC) - rm -rf tsrc - mkdir tsrc - cp -f $(SRC) tsrc - rm tsrc/sqlite.h.in tsrc/parse.y - touch target_source - -sqlite3.c: target_source $(TOP)/tool/mksqlite3c.tcl - tclsh $(TOP)/tool/mksqlite3c.tcl - cp sqlite3.c tclsqlite3.c - cat $(TOP)/src/tclsqlite.c >>tclsqlite3.c - -fts2amal.c: target_source $(TOP)/ext/fts2/mkfts2amal.tcl - tclsh $(TOP)/ext/fts2/mkfts2amal.tcl - -fts3amal.c: target_source $(TOP)/ext/fts3/mkfts3amal.tcl - tclsh $(TOP)/ext/fts3/mkfts3amal.tcl - -# Rules to build the LEMON compiler generator -# -lemon: $(TOP)/tool/lemon.c $(TOP)/src/lempar.c - $(BCC) -o lemon $(TOP)/tool/lemon.c - cp $(TOP)/src/lempar.c . - -# Rules to build individual *.o files from generated *.c files. This -# applies to: -# -# parse.o -# opcodes.o -# -%.o: %.c $(HDR) - $(TCCX_SHARED) -c $< - -# Rules to build individual *.o files from files in the src directory. -# -%.o: $(TOP)/src/%.c $(HDR) - $(TCCX_SHARED) -c $< - -tclsqlite.o: $(TOP)/src/tclsqlite.c $(HDR) - $(TCCX_SHARED) $(TCL_FLAGS) -c $(TOP)/src/tclsqlite.c - - - -# Rules to build opcodes.c and opcodes.h -# -opcodes.c: opcodes.h $(TOP)/mkopcodec.awk - $(NAWK) -f $(TOP)/mkopcodec.awk opcodes.h >opcodes.c - -opcodes.h: parse.h $(TOP)/src/vdbe.c $(TOP)/mkopcodeh.awk - cat parse.h $(TOP)/src/vdbe.c | \ - $(NAWK) -f $(TOP)/mkopcodeh.awk >opcodes.h - -# Rules to build parse.c and parse.h - the outputs of lemon. -# -parse.h: parse.c - -parse.c: $(TOP)/src/parse.y lemon $(TOP)/addopcodes.awk - cp $(TOP)/src/parse.y . - rm -f parse.h - ./lemon $(OPTS) parse.y - mv parse.h parse.h.temp - awk -f $(TOP)/addopcodes.awk parse.h.temp >parse.h - -sqlite3.h: $(TOP)/src/sqlite.h.in - sed -e s/--VERS--/`cat ${TOP}/VERSION`/ \ - -e s/--VERSION-NUMBER--/`cat ${TOP}/VERSION | sed 's/[^0-9]/ /g' | $(NAWK) '{printf "%d%03d%03d",$$1,$$2,$$3}'`/ \ - $(TOP)/src/sqlite.h.in >sqlite3.h - -keywordhash.h: $(TOP)/tool/mkkeywordhash.c - $(BCC) -o mkkeywordhash $(OPTS) $(TOP)/tool/mkkeywordhash.c - ./mkkeywordhash >keywordhash.h - - - -# Rules to build the extension objects. -# -icu.o: $(TOP)/ext/icu/icu.c $(HDR) $(EXTHDR) - $(TCCX_SHARED) -DSQLITE_CORE -c $(TOP)/ext/icu/icu.c - -fts2.o: $(TOP)/ext/fts2/fts2.c $(HDR) $(EXTHDR) - $(TCCX_SHARED) -DSQLITE_CORE -c $(TOP)/ext/fts2/fts2.c - -fts2_hash.o: $(TOP)/ext/fts2/fts2_hash.c $(HDR) $(EXTHDR) - $(TCCX_SHARED) -DSQLITE_CORE -c $(TOP)/ext/fts2/fts2_hash.c - -fts2_icu.o: $(TOP)/ext/fts2/fts2_icu.c $(HDR) $(EXTHDR) - $(TCCX_SHARED) -DSQLITE_CORE -c $(TOP)/ext/fts2/fts2_icu.c - -fts2_porter.o: $(TOP)/ext/fts2/fts2_porter.c $(HDR) $(EXTHDR) - $(TCCX_SHARED) -DSQLITE_CORE -c $(TOP)/ext/fts2/fts2_porter.c - -fts2_tokenizer.o: $(TOP)/ext/fts2/fts2_tokenizer.c $(HDR) $(EXTHDR) - $(TCCX_SHARED) -DSQLITE_CORE -c $(TOP)/ext/fts2/fts2_tokenizer.c - -fts2_tokenizer1.o: $(TOP)/ext/fts2/fts2_tokenizer1.c $(HDR) $(EXTHDR) - $(TCCX_SHARED) -DSQLITE_CORE -c $(TOP)/ext/fts2/fts2_tokenizer1.c - -fts3.o: $(TOP)/ext/fts3/fts3.c $(HDR) $(EXTHDR) - $(TCCX_SHARED) -DSQLITE_CORE -c $(TOP)/ext/fts3/fts3.c - -fts3_expr.o: $(TOP)/ext/fts3/fts3_expr.c $(HDR) $(EXTHDR) - $(TCCX_SHARED) -DSQLITE_CORE -c $(TOP)/ext/fts3/fts3_expr.c - -fts3_hash.o: $(TOP)/ext/fts3/fts3_hash.c $(HDR) $(EXTHDR) - $(TCCX_SHARED) -DSQLITE_CORE -c $(TOP)/ext/fts3/fts3_hash.c - -fts3_icu.o: $(TOP)/ext/fts3/fts3_icu.c $(HDR) $(EXTHDR) - $(TCCX_SHARED) -DSQLITE_CORE -c $(TOP)/ext/fts3/fts3_icu.c - -fts3_porter.o: $(TOP)/ext/fts3/fts3_porter.c $(HDR) $(EXTHDR) - $(TCCX_SHARED) -DSQLITE_CORE -c $(TOP)/ext/fts3/fts3_porter.c - -fts3_tokenizer.o: $(TOP)/ext/fts3/fts3_tokenizer.c $(HDR) $(EXTHDR) - $(TCCX_SHARED) -DSQLITE_CORE -c $(TOP)/ext/fts3/fts3_tokenizer.c - -fts3_tokenizer1.o: $(TOP)/ext/fts3/fts3_tokenizer1.c $(HDR) $(EXTHDR) - $(TCCX_SHARED) -DSQLITE_CORE -c $(TOP)/ext/fts3/fts3_tokenizer1.c - -rtree.o: $(TOP)/ext/rtree/rtree.c $(HDR) $(EXTHDR) - $(TCCX_SHARED) -DSQLITE_CORE -c $(TOP)/ext/rtree/rtree.c - - -# Rules for building test programs and for running tests -# -tclsqlite3: $(TOP)/src/tclsqlite.c libsqlite3.a - $(TCCX_SHARED) $(TCL_FLAGS) -DTCLSH=1 -o tclsqlite3 \ - $(TOP)/src/tclsqlite.c libsqlite3.a $(LIBTCL) $(THREADLIB) - - -# Rules to build the 'testfixture' application. -# -TESTFIXTURE_FLAGS = -DTCLSH=1 -DSQLITE_TEST=1 -DSQLITE_CRASH_TEST=1 -TESTFIXTURE_FLAGS += -DSQLITE_SERVER=1 -DSQLITE_PRIVATE="" -DSQLITE_CORE - -testfixture$(EXE): $(TESTSRC2) libsqlite3.a $(TESTSRC) $(TOP)/src/tclsqlite.c - $(TCCX) $(TCL_FLAGS) $(TESTFIXTURE_FLAGS) \ - $(TESTSRC) $(TESTSRC2) $(TOP)/src/tclsqlite.c \ - -o testfixture$(EXE) $(LIBTCL) $(THREADLIB) libsqlite3.a - -amalgamation-testfixture$(EXE): sqlite3.c $(TESTSRC) $(TOP)/src/tclsqlite.c - $(TCCX) $(TCL_FLAGS) $(TESTFIXTURE_FLAGS) \ - $(TESTSRC) $(TOP)/src/tclsqlite.c sqlite3.c \ - -o testfixture$(EXE) $(LIBTCL) $(THREADLIB) - -fts3-testfixture$(EXE): sqlite3.c fts3amal.c $(TESTSRC) $(TOP)/src/tclsqlite.c - $(TCCX) $(TCL_FLAGS) $(TESTFIXTURE_FLAGS) \ - -DSQLITE_ENABLE_FTS3=1 \ - $(TESTSRC) $(TOP)/src/tclsqlite.c sqlite3.c fts3amal.c \ - -o testfixture$(EXE) $(LIBTCL) $(THREADLIB) - -fulltest: testfixture$(EXE) sqlite3$(EXE) - ./testfixture$(EXE) $(TOP)/test/all.test - -soaktest: testfixture$(EXE) sqlite3$(EXE) - ./testfixture$(EXE) $(TOP)/test/all.test -soak=1 - -test: testfixture$(EXE) sqlite3$(EXE) - ./testfixture$(EXE) $(TOP)/test/veryquick.test - -sqlite3_analyzer$(EXE): $(TOP)/src/tclsqlite.c sqlite3.c $(TESTSRC) \ - $(TOP)/tool/spaceanal.tcl - sed \ - -e '/^#/d' \ - -e 's,\\,\\\\,g' \ - -e 's,",\\",g' \ - -e 's,^,",' \ - -e 's,$$,\\n",' \ - $(TOP)/tool/spaceanal.tcl >spaceanal_tcl.h - $(TCCX) $(TCL_FLAGS) $(TESTFIXTURE_FLAGS) \ - -DTCLSH=2 -DSQLITE_TEST=1 -DSQLITE_DEBUG=1 -DSQLITE_PRIVATE="" \ - $(TESTSRC) $(TOP)/src/tclsqlite.c sqlite3.c \ - -o sqlite3_analyzer$(EXE) \ - $(LIBTCL) $(THREADLIB) - -TEST_EXTENSION = $(SHPREFIX)testloadext.$(SO) -$(TEST_EXTENSION): $(TOP)/src/test_loadext.c - $(MKSHLIB) $(TOP)/src/test_loadext.c -o $(TEST_EXTENSION) - -extensiontest: testfixture$(EXE) $(TEST_EXTENSION) - ./testfixture$(EXE) $(TOP)/test/loadext.test - -clean: - rm -f *.o sqlite3$(EXE) libsqlite3.a sqlite3.h opcodes.* - rm -f lemon lempar.c parse.* sqlite*.tar.gz mkkeywordhash keywordhash.h - rm -f $(PUBLISH) - rm -f *.da *.bb *.bbg gmon.out - rm -rf tsrc target_source - rm -f testloadext.dll libtestloadext.so - rm -f sqlite3.c fts?amal.c tclsqlite3.c - rm -f $(SHPREFIX)sqlite3.$(SO) diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/README b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/README deleted file mode 100644 index 39aec2e431..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/README +++ /dev/null @@ -1,39 +0,0 @@ -This directory contains source code to - - SQLite: An Embeddable SQL Database Engine - -To compile the project, first create a directory in which to place -the build products. It is recommended, but not required, that the -build directory be separate from the source directory. Cd into the -build directory and then from the build directory run the configure -script found at the root of the source tree. Then run "make". - -For example: - - tar xzf sqlite.tar.gz ;# Unpack the source tree into "sqlite" - mkdir bld ;# Build will occur in a sibling directory - cd bld ;# Change to the build directory - ../sqlite/configure ;# Run the configure script - make ;# Run the makefile. - make install ;# (Optional) Install the build products - -The configure script uses autoconf 2.61 and libtool. If the configure -script does not work out for you, there is a generic makefile named -"Makefile.linux-gcc" in the top directory of the source tree that you -can copy and edit to suit your needs. Comments on the generic makefile -show what changes are needed. - -The linux binaries on the website are created using the generic makefile, -not the configure script. The windows binaries on the website are created -using MinGW32 configured as a cross-compiler running under Linux. For -details, see the ./publish.sh script at the top-level of the source tree. -The developers do not use teh configure script. - -SQLite does not require TCL to run, but a TCL installation is required -by the makefiles. SQLite contains a lot of generated code and TCL is -used to do much of that code generation. The makefile also requires -AWK. - -Contacts: - - http://www.sqlite.org/ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/VERSION b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/VERSION deleted file mode 100644 index 1606904987..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/VERSION +++ /dev/null @@ -1 +0,0 @@ -3.7.9 diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/aclocal.m4 b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/aclocal.m4 deleted file mode 100644 index fe59e19b74..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/aclocal.m4 +++ /dev/null @@ -1,7972 +0,0 @@ -# generated automatically by aclocal 1.10.2 -*- Autoconf -*- - -# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, -# 2005, 2006, 2007, 2008 Free Software Foundation, Inc. -# This file is free software; the Free Software Foundation -# gives unlimited permission to copy and/or distribute it, -# with or without modifications, as long as this notice is preserved. - -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY, to the extent permitted by law; without -# even the implied warranty of MERCHANTABILITY or FITNESS FOR A -# PARTICULAR PURPOSE. - -# libtool.m4 - Configure libtool for the host system. -*-Autoconf-*- -# -# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005, -# 2006, 2007, 2008 Free Software Foundation, Inc. -# Written by Gordon Matzigkeit, 1996 -# -# This file is free software; the Free Software Foundation gives -# unlimited permission to copy and/or distribute it, with or without -# modifications, as long as this notice is preserved. - -m4_define([_LT_COPYING], [dnl -# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005, -# 2006, 2007, 2008 Free Software Foundation, Inc. -# Written by Gordon Matzigkeit, 1996 -# -# This file is part of GNU Libtool. -# -# GNU Libtool is free software; you can redistribute it and/or -# modify it under the terms of the GNU General Public License as -# published by the Free Software Foundation; either version 2 of -# the License, or (at your option) any later version. -# -# As a special exception to the GNU General Public License, -# if you distribute this file as part of a program or library that -# is built using GNU Libtool, you may include this file under the -# same distribution terms that you use for the rest of that program. -# -# GNU Libtool is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/addopcodes.awk b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/addopcodes.awk deleted file mode 100644 index 57839db6fe..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/addopcodes.awk +++ /dev/null @@ -1,34 +0,0 @@ -#!/usr/bin/awk -# -# This script appends additional token codes to the end of the -# parse.h file that lemon generates. These extra token codes are -# not used by the parser. But they are used by the tokenizer and/or -# the code generator. -# -# -BEGIN { - max = 0 -} -/^#define TK_/ { - print $0 - if( max<$3 ) max = $3 -} -END { - printf "#define TK_%-29s %4d\n", "TO_TEXT", ++max - printf "#define TK_%-29s %4d\n", "TO_BLOB", ++max - printf "#define TK_%-29s %4d\n", "TO_NUMERIC", ++max - printf "#define TK_%-29s %4d\n", "TO_INT", ++max - printf "#define TK_%-29s %4d\n", "TO_REAL", ++max - printf "#define TK_%-29s %4d\n", "ISNOT", ++max - printf "#define TK_%-29s %4d\n", "END_OF_FILE", ++max - printf "#define TK_%-29s %4d\n", "ILLEGAL", ++max - printf "#define TK_%-29s %4d\n", "SPACE", ++max - printf "#define TK_%-29s %4d\n", "UNCLOSED_STRING", ++max - printf "#define TK_%-29s %4d\n", "FUNCTION", ++max - printf "#define TK_%-29s %4d\n", "COLUMN", ++max - printf "#define TK_%-29s %4d\n", "AGG_FUNCTION", ++max - printf "#define TK_%-29s %4d\n", "AGG_COLUMN", ++max - printf "#define TK_%-29s %4d\n", "CONST_FUNC", ++max - printf "#define TK_%-29s %4d\n", "UMINUS", ++max - printf "#define TK_%-29s %4d\n", "UPLUS", ++max -} diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/art/2005osaward.gif b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/art/2005osaward.gif deleted file mode 100644 index fa6d7d7c27..0000000000 Binary files a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/art/2005osaward.gif and /dev/null differ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/art/SQLite.eps b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/art/SQLite.eps deleted file mode 100644 index 1f334ecf7b..0000000000 Binary files a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/art/SQLite.eps and /dev/null differ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/art/SQLite.gif b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/art/SQLite.gif deleted file mode 100644 index 5ec05b0be2..0000000000 Binary files a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/art/SQLite.gif and /dev/null differ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/art/SQLiteLogo3.tiff b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/art/SQLiteLogo3.tiff deleted file mode 100644 index 70b88e7805..0000000000 Binary files a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/art/SQLiteLogo3.tiff and /dev/null differ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/art/SQLite_big.gif b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/art/SQLite_big.gif deleted file mode 100644 index dc9e6a0e6c..0000000000 Binary files a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/art/SQLite_big.gif and /dev/null differ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/art/nocopy.gif b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/art/nocopy.gif deleted file mode 100644 index cc4a59c4c0..0000000000 Binary files a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/art/nocopy.gif and /dev/null differ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/art/powered_by_sqlite.gif b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/art/powered_by_sqlite.gif deleted file mode 100644 index 5bfed023ee..0000000000 Binary files a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/art/powered_by_sqlite.gif and /dev/null differ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/art/sqlite370.eps b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/art/sqlite370.eps deleted file mode 100644 index 770175687e..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/art/sqlite370.eps +++ /dev/null @@ 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%FF8435592F5984FDFCFFFDFCFFFDFCFFFDFCFFFDFCFFFDFCFFFDFCFFFDFC %FFFDD1FFFF %%EndData -%ADOEndClientInjection: DocumentHeader "AI11EPS" -%%Pages: 1 -%%DocumentNeededResources: -%%DocumentSuppliedResources: procset Adobe_AGM_Image 1.0 0 -%%+ procset Adobe_CoolType_Utility_T42 1.0 0 -%%+ procset Adobe_CoolType_Utility_MAKEOCF 1.23 0 -%%+ procset Adobe_CoolType_Core 2.31 0 -%%+ procset Adobe_AGM_Core 2.0 0 -%%+ procset Adobe_AGM_Utils 1.0 0 -%%DocumentFonts: -%%DocumentNeededFonts: -%%DocumentNeededFeatures: -%%DocumentSuppliedFeatures: -%%DocumentProcessColors: -%%DocumentCustomColors: (PANTONE 2905 U) -%%+ (PANTONE 309 U) -%%+ (PANTONE 3005 U) -%%CMYKCustomColor: 0.4100 0.0200 0 0 (PANTONE 2905 U) -%%+ 1 0 0.0900 0.7200 (PANTONE 309 U) -%%+ 1 0.3400 0 0.0200 (PANTONE 3005 U) -%%RGBCustomColor: -%%EndComments - - - - - - -%%BeginDefaults -%%ViewingOrientation: 1 0 0 1 -%%EndDefaults -%%BeginProlog -%%BeginResource: procset Adobe_AGM_Utils 1.0 0 -%%Version: 1.0 0 -%%Copyright: Copyright(C)2000-2006 Adobe Systems, Inc. All Rights Reserved. -systemdict/setpacking known -{currentpacking true setpacking}if -userdict/Adobe_AGM_Utils 73 dict dup begin put -/bdf -{bind def}bind def -/nd{null def}bdf -/xdf -{exch def}bdf -/ldf -{load def}bdf -/ddf -{put}bdf -/xddf -{3 -1 roll put}bdf -/xpt -{exch put}bdf -/ndf -{ - exch dup where{ - pop pop pop - }{ - xdf - }ifelse -}def -/cdndf -{ - exch dup currentdict exch known{ - pop pop - }{ - exch def - }ifelse -}def -/gx -{get exec}bdf -/ps_level - /languagelevel where{ - pop systemdict/languagelevel gx - }{ - 1 - }ifelse -def -/level2 - ps_level 2 ge -def -/level3 - ps_level 3 ge -def -/ps_version - {version cvr}stopped{-1}if -def -/set_gvm -{currentglobal exch setglobal}bdf -/reset_gvm -{setglobal}bdf -/makereadonlyarray -{ - /packedarray where{pop packedarray - }{ - array astore readonly}ifelse -}bdf -/map_reserved_ink_name -{ - dup type/stringtype eq{ - dup/Red eq{ - pop(_Red_) - }{ - dup/Green eq{ - pop(_Green_) - }{ - dup/Blue eq{ - pop(_Blue_) - }{ - dup()cvn eq{ - pop(Process) - }if - }ifelse - }ifelse - }ifelse - }if -}bdf -/AGMUTIL_GSTATE 22 dict def -/get_gstate -{ - AGMUTIL_GSTATE begin - /AGMUTIL_GSTATE_clr_spc currentcolorspace def - /AGMUTIL_GSTATE_clr_indx 0 def - /AGMUTIL_GSTATE_clr_comps 12 array def - mark currentcolor counttomark - {AGMUTIL_GSTATE_clr_comps AGMUTIL_GSTATE_clr_indx 3 -1 roll put - /AGMUTIL_GSTATE_clr_indx AGMUTIL_GSTATE_clr_indx 1 add def}repeat pop - /AGMUTIL_GSTATE_fnt rootfont def - /AGMUTIL_GSTATE_lw currentlinewidth def - /AGMUTIL_GSTATE_lc currentlinecap def - /AGMUTIL_GSTATE_lj currentlinejoin def - /AGMUTIL_GSTATE_ml currentmiterlimit def - currentdash/AGMUTIL_GSTATE_do xdf/AGMUTIL_GSTATE_da xdf - /AGMUTIL_GSTATE_sa currentstrokeadjust def - /AGMUTIL_GSTATE_clr_rnd currentcolorrendering def - /AGMUTIL_GSTATE_op currentoverprint def - /AGMUTIL_GSTATE_bg currentblackgeneration cvlit def - /AGMUTIL_GSTATE_ucr currentundercolorremoval cvlit def - currentcolortransfer cvlit/AGMUTIL_GSTATE_gy_xfer xdf cvlit/AGMUTIL_GSTATE_b_xfer xdf - cvlit/AGMUTIL_GSTATE_g_xfer xdf cvlit/AGMUTIL_GSTATE_r_xfer xdf - /AGMUTIL_GSTATE_ht currenthalftone def - /AGMUTIL_GSTATE_flt currentflat def - end -}def -/set_gstate -{ - AGMUTIL_GSTATE begin - AGMUTIL_GSTATE_clr_spc setcolorspace - AGMUTIL_GSTATE_clr_indx{AGMUTIL_GSTATE_clr_comps AGMUTIL_GSTATE_clr_indx 1 sub get - /AGMUTIL_GSTATE_clr_indx AGMUTIL_GSTATE_clr_indx 1 sub def}repeat setcolor - AGMUTIL_GSTATE_fnt setfont - AGMUTIL_GSTATE_lw setlinewidth - AGMUTIL_GSTATE_lc setlinecap - AGMUTIL_GSTATE_lj setlinejoin - AGMUTIL_GSTATE_ml setmiterlimit - AGMUTIL_GSTATE_da AGMUTIL_GSTATE_do setdash - AGMUTIL_GSTATE_sa setstrokeadjust - AGMUTIL_GSTATE_clr_rnd setcolorrendering - AGMUTIL_GSTATE_op setoverprint - AGMUTIL_GSTATE_bg cvx setblackgeneration - AGMUTIL_GSTATE_ucr cvx setundercolorremoval - AGMUTIL_GSTATE_r_xfer cvx AGMUTIL_GSTATE_g_xfer cvx AGMUTIL_GSTATE_b_xfer cvx - AGMUTIL_GSTATE_gy_xfer cvx setcolortransfer - AGMUTIL_GSTATE_ht/HalftoneType get dup 9 eq exch 100 eq or - { - currenthalftone/HalftoneType get AGMUTIL_GSTATE_ht/HalftoneType get ne - { - mark AGMUTIL_GSTATE_ht{sethalftone}stopped cleartomark - }if - }{ - AGMUTIL_GSTATE_ht sethalftone - }ifelse - AGMUTIL_GSTATE_flt setflat - end -}def -/get_gstate_and_matrix -{ - AGMUTIL_GSTATE begin - /AGMUTIL_GSTATE_ctm matrix currentmatrix def - end - get_gstate -}def -/set_gstate_and_matrix -{ - set_gstate - AGMUTIL_GSTATE begin - AGMUTIL_GSTATE_ctm setmatrix - end -}def -/AGMUTIL_str256 256 string def -/AGMUTIL_src256 256 string def -/AGMUTIL_dst64 64 string def -/AGMUTIL_srcLen nd -/AGMUTIL_ndx nd -/AGMUTIL_cpd nd -/capture_cpd{ - //Adobe_AGM_Utils/AGMUTIL_cpd currentpagedevice ddf -}def -/thold_halftone -{ - level3 - {sethalftone currenthalftone} - { - dup/HalftoneType get 3 eq - { - sethalftone currenthalftone - }{ - begin - Width Height mul{ - Thresholds read{pop}if - }repeat - end - currenthalftone - }ifelse - }ifelse -}def -/rdcmntline -{ - currentfile AGMUTIL_str256 readline pop - (%)anchorsearch{pop}if -}bdf -/filter_cmyk -{ - dup type/filetype ne{ - exch()/SubFileDecode filter - }{ - exch pop - } - ifelse - [ - exch - { - AGMUTIL_src256 readstring pop - dup length/AGMUTIL_srcLen exch def - /AGMUTIL_ndx 0 def - AGMCORE_plate_ndx 4 AGMUTIL_srcLen 1 sub{ - 1 index exch get - AGMUTIL_dst64 AGMUTIL_ndx 3 -1 roll put - /AGMUTIL_ndx AGMUTIL_ndx 1 add def - }for - pop - AGMUTIL_dst64 0 AGMUTIL_ndx getinterval - } - bind - /exec cvx - ]cvx -}bdf -/filter_indexed_devn -{ - cvi Names length mul names_index add Lookup exch get -}bdf -/filter_devn -{ - 4 dict begin - /srcStr xdf - /dstStr xdf - dup type/filetype ne{ - 0()/SubFileDecode filter - }if - [ - exch - [ - /devicen_colorspace_dict/AGMCORE_gget cvx/begin cvx - currentdict/srcStr get/readstring cvx/pop cvx - /dup cvx/length cvx 0/gt cvx[ - Adobe_AGM_Utils/AGMUTIL_ndx 0/ddf cvx - names_index Names length currentdict/srcStr get length 1 sub{ - 1/index cvx/exch cvx/get cvx - currentdict/dstStr get/AGMUTIL_ndx/load cvx 3 -1/roll cvx/put cvx - Adobe_AGM_Utils/AGMUTIL_ndx/AGMUTIL_ndx/load cvx 1/add cvx/ddf cvx - }for - currentdict/dstStr get 0/AGMUTIL_ndx/load cvx/getinterval cvx - ]cvx/if cvx - /end cvx - ]cvx - bind - /exec cvx - ]cvx - end -}bdf -/AGMUTIL_imagefile nd -/read_image_file -{ - AGMUTIL_imagefile 0 setfileposition - 10 dict begin - /imageDict xdf - /imbufLen Width BitsPerComponent mul 7 add 8 idiv def - /imbufIdx 0 def - /origDataSource imageDict/DataSource get def - /origMultipleDataSources imageDict/MultipleDataSources get def - /origDecode imageDict/Decode get def - /dstDataStr imageDict/Width get colorSpaceElemCnt mul string def - imageDict/MultipleDataSources known{MultipleDataSources}{false}ifelse - { - /imbufCnt imageDict/DataSource get length def - /imbufs imbufCnt array def - 0 1 imbufCnt 1 sub{ - /imbufIdx xdf - imbufs imbufIdx imbufLen string put - imageDict/DataSource get imbufIdx[AGMUTIL_imagefile imbufs imbufIdx get/readstring cvx/pop cvx]cvx put - }for - DeviceN_PS2{ - imageDict begin - /DataSource[DataSource/devn_sep_datasource cvx]cvx def - /MultipleDataSources false def - /Decode[0 1]def - end - }if - }{ - /imbuf imbufLen string def - Indexed_DeviceN level3 not and DeviceN_NoneName or{ - /srcDataStrs[imageDict begin - currentdict/MultipleDataSources known{MultipleDataSources{DataSource length}{1}ifelse}{1}ifelse - { - Width Decode length 2 div mul cvi string - }repeat - end]def - imageDict begin - /DataSource[AGMUTIL_imagefile Decode BitsPerComponent false 1/filter_indexed_devn load dstDataStr srcDataStrs devn_alt_datasource/exec cvx]cvx def - /Decode[0 1]def - end - }{ - imageDict/DataSource[1 string dup 0 AGMUTIL_imagefile Decode length 2 idiv string/readstring cvx/pop cvx names_index/get cvx/put cvx]cvx put - imageDict/Decode[0 1]put - }ifelse - }ifelse - imageDict exch - load exec - imageDict/DataSource origDataSource put - imageDict/MultipleDataSources origMultipleDataSources put - imageDict/Decode origDecode put - end -}bdf -/write_image_file -{ - begin - {(AGMUTIL_imagefile)(w+)file}stopped{ - false - }{ - Adobe_AGM_Utils/AGMUTIL_imagefile xddf - 2 dict begin - /imbufLen Width BitsPerComponent mul 7 add 8 idiv def - MultipleDataSources{DataSource 0 get}{DataSource}ifelse type/filetype eq{ - /imbuf imbufLen string def - }if - 1 1 Height MultipleDataSources not{Decode length 2 idiv mul}if{ - pop - MultipleDataSources{ - 0 1 DataSource length 1 sub{ - DataSource type dup - /arraytype eq{ - pop DataSource exch gx - }{ - /filetype eq{ - DataSource exch get imbuf readstring pop - }{ - DataSource exch get - }ifelse - }ifelse - AGMUTIL_imagefile exch writestring - }for - }{ - DataSource type dup - /arraytype eq{ - pop DataSource exec - }{ - /filetype eq{ - DataSource imbuf readstring pop - }{ - DataSource - }ifelse - }ifelse - AGMUTIL_imagefile exch writestring - }ifelse - }for - end - true - }ifelse - end -}bdf -/close_image_file -{ - AGMUTIL_imagefile closefile(AGMUTIL_imagefile)deletefile -}def -statusdict/product known userdict/AGMP_current_show known not and{ - /pstr statusdict/product get def - pstr(HP LaserJet 2200)eq - pstr(HP LaserJet 4000 Series)eq or - pstr(HP LaserJet 4050 Series )eq or - pstr(HP LaserJet 8000 Series)eq or - pstr(HP LaserJet 8100 Series)eq or - pstr(HP LaserJet 8150 Series)eq or - pstr(HP LaserJet 5000 Series)eq or - pstr(HP LaserJet 5100 Series)eq or - pstr(HP Color LaserJet 4500)eq or - pstr(HP Color LaserJet 4600)eq or - pstr(HP LaserJet 5Si)eq or - pstr(HP LaserJet 1200 Series)eq or - pstr(HP LaserJet 1300 Series)eq or - pstr(HP LaserJet 4100 Series)eq or - { - userdict/AGMP_current_show/show load put - userdict/show{ - currentcolorspace 0 get - /Pattern eq - {false charpath f} - {AGMP_current_show}ifelse - }put - }if - currentdict/pstr undef -}if -/consumeimagedata -{ - begin - AGMIMG_init_common - currentdict/MultipleDataSources known not - {/MultipleDataSources false def}if - MultipleDataSources - { - DataSource 0 get type - dup/filetype eq - { - 1 dict begin - /flushbuffer Width cvi string def - 1 1 Height cvi - { - pop - 0 1 DataSource length 1 sub - { - DataSource exch get - flushbuffer readstring pop pop - }for - }for - end - }if - dup/arraytype eq exch/packedarraytype eq or DataSource 0 get xcheck and - { - Width Height mul cvi - { - 0 1 DataSource length 1 sub - {dup DataSource exch gx length exch 0 ne{pop}if}for - dup 0 eq - {pop exit}if - sub dup 0 le - {exit}if - }loop - pop - }if - } - { - /DataSource load type - dup/filetype eq - { - 1 dict begin - /flushbuffer Width Decode length 2 idiv mul cvi string def - 1 1 Height{pop DataSource flushbuffer readstring pop pop}for - end - }if - dup/arraytype eq exch/packedarraytype eq or/DataSource load xcheck and - { - Height Width BitsPerComponent mul 8 BitsPerComponent sub add 8 idiv Decode length 2 idiv mul mul - { - DataSource length dup 0 eq - {pop exit}if - sub dup 0 le - {exit}if - }loop - pop - }if - }ifelse - end -}bdf -/addprocs -{ - 2{/exec load}repeat - 3 1 roll - [5 1 roll]bind cvx -}def -/modify_halftone_xfer -{ - currenthalftone dup length dict copy begin - currentdict 2 index known{ - 1 index load dup length dict copy begin - currentdict/TransferFunction known{ - /TransferFunction load - }{ - currenttransfer - }ifelse - addprocs/TransferFunction xdf - currentdict end def - currentdict end sethalftone - }{ - currentdict/TransferFunction known{ - /TransferFunction load - }{ - currenttransfer - }ifelse - addprocs/TransferFunction xdf - currentdict end sethalftone - pop - }ifelse -}def -/clonearray -{ - dup xcheck exch - dup length array exch - Adobe_AGM_Core/AGMCORE_tmp -1 ddf - { - Adobe_AGM_Core/AGMCORE_tmp 2 copy get 1 add ddf - dup type/dicttype eq - { - Adobe_AGM_Core/AGMCORE_tmp get - exch - clonedict - Adobe_AGM_Core/AGMCORE_tmp 4 -1 roll ddf - }if - dup type/arraytype eq - { - Adobe_AGM_Core/AGMCORE_tmp get exch - clonearray - Adobe_AGM_Core/AGMCORE_tmp 4 -1 roll ddf - }if - exch dup - Adobe_AGM_Core/AGMCORE_tmp get 4 -1 roll put - }forall - exch{cvx}if -}bdf -/clonedict -{ - dup length dict - begin - { - dup type/dicttype eq - {clonedict}if - dup type/arraytype eq - {clonearray}if - def - }forall - currentdict - end -}bdf -/DeviceN_PS2 -{ - /currentcolorspace AGMCORE_gget 0 get/DeviceN eq level3 not and -}bdf -/Indexed_DeviceN -{ - /indexed_colorspace_dict AGMCORE_gget dup null ne{ - dup/CSDBase known{ - /CSDBase get/CSD get_res/Names known - }{ - pop false - }ifelse - }{ - pop false - }ifelse -}bdf -/DeviceN_NoneName -{ - /Names where{ - pop - false Names - { - (None)eq or - }forall - }{ - false - }ifelse -}bdf -/DeviceN_PS2_inRip_seps -{ - /AGMCORE_in_rip_sep where - { - pop dup type dup/arraytype eq exch/packedarraytype eq or - { - dup 0 get/DeviceN eq level3 not and AGMCORE_in_rip_sep and - { - /currentcolorspace exch AGMCORE_gput - false - }{ - true - }ifelse - }{ - true - }ifelse - }{ - true - }ifelse -}bdf -/base_colorspace_type -{ - dup type/arraytype eq{0 get}if -}bdf -/currentdistillerparams where{pop currentdistillerparams/CoreDistVersion get 5000 lt}{true}ifelse -{ - /pdfmark_5{cleartomark}bind def -}{ - /pdfmark_5{pdfmark}bind def -}ifelse -/ReadBypdfmark_5 -{ - currentfile exch 0 exch/SubFileDecode filter - /currentdistillerparams where - {pop currentdistillerparams/CoreDistVersion get 5000 lt}{true}ifelse - {flushfile cleartomark} - {/PUT pdfmark}ifelse -}bdf -/xpdfm -{ - { - dup 0 get/Label eq - { - aload length[exch 1 add 1 roll/PAGELABEL - }{ - aload pop - [{ThisPage}<<5 -2 roll>>/PUT - }ifelse - pdfmark_5 - }forall -}bdf -/ds{ - Adobe_AGM_Utils begin -}bdf -/dt{ - currentdict Adobe_AGM_Utils eq{ - end - }if -}bdf -systemdict/setpacking known -{setpacking}if -%%EndResource -%%BeginResource: procset Adobe_AGM_Core 2.0 0 -%%Version: 2.0 0 -%%Copyright: Copyright(C)1997-2007 Adobe Systems, Inc. All Rights Reserved. -systemdict/setpacking known -{ - currentpacking - true setpacking -}if -userdict/Adobe_AGM_Core 209 dict dup begin put -/Adobe_AGM_Core_Id/Adobe_AGM_Core_2.0_0 def -/AGMCORE_str256 256 string def -/AGMCORE_save nd -/AGMCORE_graphicsave nd -/AGMCORE_c 0 def -/AGMCORE_m 0 def -/AGMCORE_y 0 def -/AGMCORE_k 0 def -/AGMCORE_cmykbuf 4 array def -/AGMCORE_screen[currentscreen]cvx def -/AGMCORE_tmp 0 def -/AGMCORE_&setgray nd -/AGMCORE_&setcolor nd -/AGMCORE_&setcolorspace nd -/AGMCORE_&setcmykcolor nd -/AGMCORE_cyan_plate nd -/AGMCORE_magenta_plate nd -/AGMCORE_yellow_plate nd -/AGMCORE_black_plate nd -/AGMCORE_plate_ndx nd -/AGMCORE_get_ink_data nd -/AGMCORE_is_cmyk_sep nd -/AGMCORE_host_sep nd -/AGMCORE_avoid_L2_sep_space nd -/AGMCORE_distilling nd -/AGMCORE_composite_job nd -/AGMCORE_producing_seps nd -/AGMCORE_ps_level -1 def -/AGMCORE_ps_version -1 def -/AGMCORE_environ_ok nd -/AGMCORE_CSD_cache 0 dict def -/AGMCORE_currentoverprint false def -/AGMCORE_deltaX nd -/AGMCORE_deltaY nd -/AGMCORE_name nd -/AGMCORE_sep_special nd -/AGMCORE_err_strings 4 dict def -/AGMCORE_cur_err nd -/AGMCORE_current_spot_alias false def -/AGMCORE_inverting false def -/AGMCORE_feature_dictCount nd -/AGMCORE_feature_opCount nd -/AGMCORE_feature_ctm nd -/AGMCORE_ConvertToProcess false def -/AGMCORE_Default_CTM matrix def -/AGMCORE_Default_PageSize nd -/AGMCORE_Default_flatness nd -/AGMCORE_currentbg nd -/AGMCORE_currentucr nd -/AGMCORE_pattern_paint_type 0 def -/knockout_unitsq nd -currentglobal true setglobal -[/CSA/Gradient/Procedure] -{ - /Generic/Category findresource dup length dict copy/Category defineresource pop -}forall -setglobal -/AGMCORE_key_known -{ - where{ - /Adobe_AGM_Core_Id known - }{ - false - }ifelse -}ndf -/flushinput -{ - save - 2 dict begin - /CompareBuffer 3 -1 roll def - /readbuffer 256 string def - mark - { - currentfile readbuffer{readline}stopped - {cleartomark mark} - { - not - {pop exit} - if - CompareBuffer eq - {exit} - if - }ifelse - }loop - cleartomark - end - restore -}bdf -/getspotfunction -{ - AGMCORE_screen exch pop exch pop - dup type/dicttype eq{ - dup/HalftoneType get 1 eq{ - /SpotFunction get - }{ - dup/HalftoneType get 2 eq{ - /GraySpotFunction get - }{ - pop - { - abs exch abs 2 copy add 1 gt{ - 1 sub dup mul exch 1 sub dup mul add 1 sub - }{ - dup mul exch dup mul add 1 exch sub - }ifelse - }bind - }ifelse - }ifelse - }if -}def -/np -{newpath}bdf -/clp_npth -{clip np}def -/eoclp_npth -{eoclip np}def -/npth_clp -{np clip}def -/graphic_setup -{ - /AGMCORE_graphicsave save store - concat - 0 setgray - 0 setlinecap - 0 setlinejoin - 1 setlinewidth - []0 setdash - 10 setmiterlimit - np - false setoverprint - false setstrokeadjust - //Adobe_AGM_Core/spot_alias gx - /Adobe_AGM_Image where{ - pop - Adobe_AGM_Image/spot_alias 2 copy known{ - gx - }{ - pop pop - }ifelse - }if - /sep_colorspace_dict null AGMCORE_gput - 100 dict begin - /dictstackcount countdictstack def - /showpage{}def - mark -}def -/graphic_cleanup -{ - cleartomark - dictstackcount 1 countdictstack 1 sub{end}for - end - AGMCORE_graphicsave restore -}def -/compose_error_msg -{ - grestoreall initgraphics - /Helvetica findfont 10 scalefont setfont - /AGMCORE_deltaY 100 def - /AGMCORE_deltaX 310 def - clippath pathbbox np pop pop 36 add exch 36 add exch moveto - 0 AGMCORE_deltaY rlineto AGMCORE_deltaX 0 rlineto - 0 AGMCORE_deltaY neg rlineto AGMCORE_deltaX neg 0 rlineto closepath - 0 AGMCORE_&setgray - gsave 1 AGMCORE_&setgray fill grestore - 1 setlinewidth gsave stroke grestore - currentpoint AGMCORE_deltaY 15 sub add exch 8 add exch moveto - /AGMCORE_deltaY 12 def - /AGMCORE_tmp 0 def - AGMCORE_err_strings exch get - { - dup 32 eq - { - pop - AGMCORE_str256 0 AGMCORE_tmp getinterval - stringwidth pop currentpoint pop add AGMCORE_deltaX 28 add gt - { - currentpoint AGMCORE_deltaY sub exch pop - clippath pathbbox pop pop pop 44 add exch moveto - }if - AGMCORE_str256 0 AGMCORE_tmp getinterval show( )show - 0 1 AGMCORE_str256 length 1 sub - { - AGMCORE_str256 exch 0 put - }for - /AGMCORE_tmp 0 def - }{ - AGMCORE_str256 exch AGMCORE_tmp xpt - /AGMCORE_tmp AGMCORE_tmp 1 add def - }ifelse - }forall -}bdf -/AGMCORE_CMYKDeviceNColorspaces[ - [/Separation/None/DeviceCMYK{0 0 0}] - [/Separation(Black)/DeviceCMYK{0 0 0 4 -1 roll}bind] - [/Separation(Yellow)/DeviceCMYK{0 0 3 -1 roll 0}bind] - [/DeviceN[(Yellow)(Black)]/DeviceCMYK{0 0 4 2 roll}bind] - [/Separation(Magenta)/DeviceCMYK{0 exch 0 0}bind] - [/DeviceN[(Magenta)(Black)]/DeviceCMYK{0 3 1 roll 0 exch}bind] - [/DeviceN[(Magenta)(Yellow)]/DeviceCMYK{0 3 1 roll 0}bind] - [/DeviceN[(Magenta)(Yellow)(Black)]/DeviceCMYK{0 4 1 roll}bind] - [/Separation(Cyan)/DeviceCMYK{0 0 0}] - [/DeviceN[(Cyan)(Black)]/DeviceCMYK{0 0 3 -1 roll}bind] - [/DeviceN[(Cyan)(Yellow)]/DeviceCMYK{0 exch 0}bind] - [/DeviceN[(Cyan)(Yellow)(Black)]/DeviceCMYK{0 3 1 roll}bind] - [/DeviceN[(Cyan)(Magenta)]/DeviceCMYK{0 0}] - [/DeviceN[(Cyan)(Magenta)(Black)]/DeviceCMYK{0 exch}bind] - [/DeviceN[(Cyan)(Magenta)(Yellow)]/DeviceCMYK{0}] - [/DeviceCMYK] -]def -/ds{ - Adobe_AGM_Core begin - /currentdistillerparams where - { - pop currentdistillerparams/CoreDistVersion get 5000 lt - {<>setdistillerparams}if - }if - /AGMCORE_ps_version xdf - /AGMCORE_ps_level xdf - errordict/AGM_handleerror known not{ - errordict/AGM_handleerror errordict/handleerror get put - errordict/handleerror{ - Adobe_AGM_Core begin - $error/newerror get AGMCORE_cur_err null ne and{ - $error/newerror false put - AGMCORE_cur_err compose_error_msg - }if - $error/newerror true put - end - errordict/AGM_handleerror get exec - }bind put - }if - /AGMCORE_environ_ok - ps_level AGMCORE_ps_level ge - ps_version AGMCORE_ps_version ge and - AGMCORE_ps_level -1 eq or - def - AGMCORE_environ_ok not - {/AGMCORE_cur_err/AGMCORE_bad_environ def}if - /AGMCORE_&setgray systemdict/setgray get def - level2{ - /AGMCORE_&setcolor systemdict/setcolor get def - /AGMCORE_&setcolorspace systemdict/setcolorspace get def - }if - /AGMCORE_currentbg currentblackgeneration def - /AGMCORE_currentucr currentundercolorremoval def - /AGMCORE_Default_flatness currentflat def - /AGMCORE_distilling - /product where{ - pop systemdict/setdistillerparams known product(Adobe PostScript Parser)ne and - }{ - false - }ifelse - def - /AGMCORE_GSTATE AGMCORE_key_known not{ - /AGMCORE_GSTATE 21 dict def - /AGMCORE_tmpmatrix matrix def - /AGMCORE_gstack 32 array def - /AGMCORE_gstackptr 0 def - /AGMCORE_gstacksaveptr 0 def - /AGMCORE_gstackframekeys 14 def - /AGMCORE_&gsave/gsave ldf - /AGMCORE_&grestore/grestore ldf - /AGMCORE_&grestoreall/grestoreall ldf - /AGMCORE_&save/save ldf - /AGMCORE_&setoverprint/setoverprint ldf - /AGMCORE_gdictcopy{ - begin - {def}forall - end - }def - /AGMCORE_gput{ - AGMCORE_gstack AGMCORE_gstackptr get - 3 1 roll - put - }def - /AGMCORE_gget{ - AGMCORE_gstack AGMCORE_gstackptr get - exch - get - }def - /gsave{ - AGMCORE_&gsave - AGMCORE_gstack AGMCORE_gstackptr get - AGMCORE_gstackptr 1 add - dup 32 ge{limitcheck}if - /AGMCORE_gstackptr exch store - AGMCORE_gstack AGMCORE_gstackptr get - AGMCORE_gdictcopy - }def - /grestore{ - AGMCORE_&grestore - AGMCORE_gstackptr 1 sub - dup AGMCORE_gstacksaveptr lt{1 add}if - dup AGMCORE_gstack exch get dup/AGMCORE_currentoverprint known - {/AGMCORE_currentoverprint get setoverprint}{pop}ifelse - /AGMCORE_gstackptr exch store - }def - /grestoreall{ - AGMCORE_&grestoreall - /AGMCORE_gstackptr AGMCORE_gstacksaveptr store - }def - /save{ - AGMCORE_&save - AGMCORE_gstack AGMCORE_gstackptr get - AGMCORE_gstackptr 1 add - dup 32 ge{limitcheck}if - /AGMCORE_gstackptr exch store - /AGMCORE_gstacksaveptr AGMCORE_gstackptr store - AGMCORE_gstack AGMCORE_gstackptr get - AGMCORE_gdictcopy - }def - /setoverprint{ - dup/AGMCORE_currentoverprint exch AGMCORE_gput AGMCORE_&setoverprint - }def - 0 1 AGMCORE_gstack length 1 sub{ - AGMCORE_gstack exch AGMCORE_gstackframekeys dict put - }for - }if - level3/AGMCORE_&sysshfill AGMCORE_key_known not and - { - /AGMCORE_&sysshfill systemdict/shfill get def - /AGMCORE_&sysmakepattern systemdict/makepattern get def - /AGMCORE_&usrmakepattern/makepattern load def - }if - /currentcmykcolor[0 0 0 0]AGMCORE_gput - /currentstrokeadjust false AGMCORE_gput - /currentcolorspace[/DeviceGray]AGMCORE_gput - /sep_tint 0 AGMCORE_gput - /devicen_tints[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0]AGMCORE_gput - /sep_colorspace_dict null AGMCORE_gput - /devicen_colorspace_dict null AGMCORE_gput - /indexed_colorspace_dict null AGMCORE_gput - /currentcolor_intent()AGMCORE_gput - /customcolor_tint 1 AGMCORE_gput - /absolute_colorimetric_crd null AGMCORE_gput - /relative_colorimetric_crd null AGMCORE_gput - /saturation_crd null AGMCORE_gput - /perceptual_crd null AGMCORE_gput - currentcolortransfer cvlit/AGMCore_gray_xfer xdf cvlit/AGMCore_b_xfer xdf - cvlit/AGMCore_g_xfer xdf cvlit/AGMCore_r_xfer xdf - << - /MaxPatternItem currentsystemparams/MaxPatternCache get - >> - setuserparams - end -}def -/ps -{ - /setcmykcolor where{ - pop - Adobe_AGM_Core/AGMCORE_&setcmykcolor/setcmykcolor load put - }if - Adobe_AGM_Core begin - /setcmykcolor - { - 4 copy AGMCORE_cmykbuf astore/currentcmykcolor exch AGMCORE_gput - 1 sub 4 1 roll - 3{ - 3 index add neg dup 0 lt{ - pop 0 - }if - 3 1 roll - }repeat - setrgbcolor pop - }ndf - /currentcmykcolor - { - /currentcmykcolor AGMCORE_gget aload pop - }ndf - /setoverprint - {pop}ndf - /currentoverprint - {false}ndf - /AGMCORE_cyan_plate 1 0 0 0 test_cmyk_color_plate def - /AGMCORE_magenta_plate 0 1 0 0 test_cmyk_color_plate def - /AGMCORE_yellow_plate 0 0 1 0 test_cmyk_color_plate def - /AGMCORE_black_plate 0 0 0 1 test_cmyk_color_plate def - /AGMCORE_plate_ndx - AGMCORE_cyan_plate{ - 0 - }{ - AGMCORE_magenta_plate{ - 1 - }{ - AGMCORE_yellow_plate{ - 2 - }{ - AGMCORE_black_plate{ - 3 - }{ - 4 - }ifelse - }ifelse - }ifelse - }ifelse - def - /AGMCORE_have_reported_unsupported_color_space false def - /AGMCORE_report_unsupported_color_space - { - AGMCORE_have_reported_unsupported_color_space false eq - { - (Warning: Job contains content that cannot be separated with on-host methods. This content appears on the black plate, and knocks out all other plates.)== - Adobe_AGM_Core/AGMCORE_have_reported_unsupported_color_space true ddf - }if - }def - /AGMCORE_composite_job - AGMCORE_cyan_plate AGMCORE_magenta_plate and AGMCORE_yellow_plate and AGMCORE_black_plate and def - /AGMCORE_in_rip_sep - /AGMCORE_in_rip_sep where{ - pop AGMCORE_in_rip_sep - }{ - AGMCORE_distilling - { - false - }{ - userdict/Adobe_AGM_OnHost_Seps known{ - false - }{ - level2{ - currentpagedevice/Separations 2 copy known{ - get - }{ - pop pop false - }ifelse - }{ - false - }ifelse - }ifelse - }ifelse - }ifelse - def - /AGMCORE_producing_seps AGMCORE_composite_job not AGMCORE_in_rip_sep or def - /AGMCORE_host_sep AGMCORE_producing_seps AGMCORE_in_rip_sep not and def - /AGM_preserve_spots - /AGM_preserve_spots where{ - pop AGM_preserve_spots - }{ - AGMCORE_distilling AGMCORE_producing_seps or - }ifelse - def - /AGM_is_distiller_preserving_spotimages - { - currentdistillerparams/PreserveOverprintSettings known - { - currentdistillerparams/PreserveOverprintSettings get - { - currentdistillerparams/ColorConversionStrategy known - { - currentdistillerparams/ColorConversionStrategy get - /sRGB ne - }{ - true - }ifelse - }{ - false - }ifelse - }{ - false - }ifelse - }def - /convert_spot_to_process where{pop}{ - /convert_spot_to_process - { - //Adobe_AGM_Core begin - dup map_alias{ - /Name get exch pop - }if - dup dup(None)eq exch(All)eq or - { - pop false - }{ - AGMCORE_host_sep - { - gsave - 1 0 0 0 setcmykcolor currentgray 1 exch sub - 0 1 0 0 setcmykcolor currentgray 1 exch sub - 0 0 1 0 setcmykcolor currentgray 1 exch sub - 0 0 0 1 setcmykcolor currentgray 1 exch sub - add add add 0 eq - { - pop false - }{ - false setoverprint - current_spot_alias false set_spot_alias - 1 1 1 1 6 -1 roll findcmykcustomcolor 1 setcustomcolor - set_spot_alias - currentgray 1 ne - }ifelse - grestore - }{ - AGMCORE_distilling - { - pop AGM_is_distiller_preserving_spotimages not - }{ - //Adobe_AGM_Core/AGMCORE_name xddf - false - //Adobe_AGM_Core/AGMCORE_pattern_paint_type get 0 eq - AGMUTIL_cpd/OverrideSeparations known and - { - AGMUTIL_cpd/OverrideSeparations get - { - /HqnSpots/ProcSet resourcestatus - { - pop pop pop true - }if - }if - }if - { - AGMCORE_name/HqnSpots/ProcSet findresource/TestSpot gx not - }{ - gsave - [/Separation AGMCORE_name/DeviceGray{}]AGMCORE_&setcolorspace - false - AGMUTIL_cpd/SeparationColorNames 2 copy known - { - get - {AGMCORE_name eq or}forall - not - }{ - pop pop pop true - }ifelse - grestore - }ifelse - }ifelse - }ifelse - }ifelse - end - }def - }ifelse - /convert_to_process where{pop}{ - /convert_to_process - { - dup length 0 eq - { - pop false - }{ - AGMCORE_host_sep - { - dup true exch - { - dup(Cyan)eq exch - dup(Magenta)eq 3 -1 roll or exch - dup(Yellow)eq 3 -1 roll or exch - dup(Black)eq 3 -1 roll or - {pop} - {convert_spot_to_process and}ifelse - } - forall - { - true exch - { - dup(Cyan)eq exch - dup(Magenta)eq 3 -1 roll or exch - dup(Yellow)eq 3 -1 roll or exch - (Black)eq or and - }forall - not - }{pop false}ifelse - }{ - false exch - { - /PhotoshopDuotoneList where{pop false}{true}ifelse - { - dup(Cyan)eq exch - dup(Magenta)eq 3 -1 roll or exch - dup(Yellow)eq 3 -1 roll or exch - dup(Black)eq 3 -1 roll or - {pop} - {convert_spot_to_process or}ifelse - } - { - convert_spot_to_process or - } - ifelse - } - forall - }ifelse - }ifelse - }def - }ifelse - /AGMCORE_avoid_L2_sep_space - version cvr 2012 lt - level2 and - AGMCORE_producing_seps not and - def - /AGMCORE_is_cmyk_sep - AGMCORE_cyan_plate AGMCORE_magenta_plate or AGMCORE_yellow_plate or AGMCORE_black_plate or - def - /AGM_avoid_0_cmyk where{ - pop AGM_avoid_0_cmyk - }{ - AGM_preserve_spots - userdict/Adobe_AGM_OnHost_Seps known - userdict/Adobe_AGM_InRip_Seps known or - not and - }ifelse - { - /setcmykcolor[ - { - 4 copy add add add 0 eq currentoverprint and{ - pop 0.0005 - }if - }/exec cvx - /AGMCORE_&setcmykcolor load dup type/operatortype ne{ - /exec cvx - }if - ]cvx def - }if - /AGMCORE_IsSeparationAProcessColor - { - dup(Cyan)eq exch dup(Magenta)eq exch dup(Yellow)eq exch(Black)eq or or or - }def - AGMCORE_host_sep{ - /setcolortransfer - { - AGMCORE_cyan_plate{ - pop pop pop - }{ - AGMCORE_magenta_plate{ - 4 3 roll pop pop pop - }{ - AGMCORE_yellow_plate{ - 4 2 roll pop pop pop - }{ - 4 1 roll pop pop pop - }ifelse - }ifelse - }ifelse - settransfer - } - def - /AGMCORE_get_ink_data - AGMCORE_cyan_plate{ - {pop pop pop} - }{ - AGMCORE_magenta_plate{ - {4 3 roll pop pop pop} - }{ - AGMCORE_yellow_plate{ - {4 2 roll pop pop pop} - }{ - {4 1 roll pop pop pop} - }ifelse - }ifelse - }ifelse - def - /AGMCORE_RemoveProcessColorNames - { - 1 dict begin - /filtername - { - dup/Cyan eq 1 index(Cyan)eq or - {pop(_cyan_)}if - dup/Magenta eq 1 index(Magenta)eq or - {pop(_magenta_)}if - dup/Yellow eq 1 index(Yellow)eq or - {pop(_yellow_)}if - dup/Black eq 1 index(Black)eq or - {pop(_black_)}if - }def - dup type/arraytype eq - {[exch{filtername}forall]} - {filtername}ifelse - end - }def - level3{ - /AGMCORE_IsCurrentColor - { - dup AGMCORE_IsSeparationAProcessColor - { - AGMCORE_plate_ndx 0 eq - {dup(Cyan)eq exch/Cyan eq or}if - AGMCORE_plate_ndx 1 eq - {dup(Magenta)eq exch/Magenta eq or}if - AGMCORE_plate_ndx 2 eq - {dup(Yellow)eq exch/Yellow eq or}if - AGMCORE_plate_ndx 3 eq - {dup(Black)eq exch/Black eq or}if - AGMCORE_plate_ndx 4 eq - {pop false}if - }{ - gsave - false setoverprint - current_spot_alias false set_spot_alias - 1 1 1 1 6 -1 roll findcmykcustomcolor 1 setcustomcolor - set_spot_alias - currentgray 1 ne - grestore - }ifelse - }def - /AGMCORE_filter_functiondatasource - { - 5 dict begin - /data_in xdf - data_in type/stringtype eq - { - /ncomp xdf - /comp xdf - /string_out data_in length ncomp idiv string def - 0 ncomp data_in length 1 sub - { - string_out exch dup ncomp idiv exch data_in exch ncomp getinterval comp get 255 exch sub put - }for - string_out - }{ - string/string_in xdf - /string_out 1 string def - /component xdf - [ - data_in string_in/readstring cvx - [component/get cvx 255/exch cvx/sub cvx string_out/exch cvx 0/exch cvx/put cvx string_out]cvx - [/pop cvx()]cvx/ifelse cvx - ]cvx/ReusableStreamDecode filter - }ifelse - end - }def - /AGMCORE_separateShadingFunction - { - 2 dict begin - /paint? xdf - /channel xdf - dup type/dicttype eq - { - begin - FunctionType 0 eq - { - /DataSource channel Range length 2 idiv DataSource AGMCORE_filter_functiondatasource def - currentdict/Decode known - {/Decode Decode channel 2 mul 2 getinterval def}if - paint? not - {/Decode[1 1]def}if - }if - FunctionType 2 eq - { - paint? - { - /C0[C0 channel get 1 exch sub]def - /C1[C1 channel get 1 exch sub]def - }{ - /C0[1]def - /C1[1]def - }ifelse - }if - FunctionType 3 eq - { - /Functions[Functions{channel paint? AGMCORE_separateShadingFunction}forall]def - }if - currentdict/Range known - {/Range[0 1]def}if - currentdict - end}{ - channel get 0 paint? AGMCORE_separateShadingFunction - }ifelse - end - }def - /AGMCORE_separateShading - { - 3 -1 roll begin - currentdict/Function known - { - currentdict/Background known - {[1 index{Background 3 index get 1 exch sub}{1}ifelse]/Background xdf}if - Function 3 1 roll AGMCORE_separateShadingFunction/Function xdf - /ColorSpace[/DeviceGray]def - }{ - ColorSpace dup type/arraytype eq{0 get}if/DeviceCMYK eq - { - /ColorSpace[/DeviceN[/_cyan_/_magenta_/_yellow_/_black_]/DeviceCMYK{}]def - }{ - ColorSpace dup 1 get AGMCORE_RemoveProcessColorNames 1 exch put - }ifelse - ColorSpace 0 get/Separation eq - { - { - [1/exch cvx/sub cvx]cvx - }{ - [/pop cvx 1]cvx - }ifelse - ColorSpace 3 3 -1 roll put - pop - }{ - { - [exch ColorSpace 1 get length 1 sub exch sub/index cvx 1/exch cvx/sub cvx ColorSpace 1 get length 1 add 1/roll cvx ColorSpace 1 get length{/pop cvx}repeat]cvx - }{ - pop[ColorSpace 1 get length{/pop cvx}repeat cvx 1]cvx - }ifelse - ColorSpace 3 3 -1 roll bind put - }ifelse - ColorSpace 2/DeviceGray put - }ifelse - end - }def - /AGMCORE_separateShadingDict - { - dup/ColorSpace get - dup type/arraytype ne - {[exch]}if - dup 0 get/DeviceCMYK eq - { - exch begin - currentdict - AGMCORE_cyan_plate - {0 true}if - AGMCORE_magenta_plate - {1 true}if - AGMCORE_yellow_plate - {2 true}if - AGMCORE_black_plate - {3 true}if - AGMCORE_plate_ndx 4 eq - {0 false}if - dup not currentoverprint and - {/AGMCORE_ignoreshade true def}if - AGMCORE_separateShading - currentdict - end exch - }if - dup 0 get/Separation eq - { - exch begin - ColorSpace 1 get dup/None ne exch/All ne and - { - ColorSpace 1 get AGMCORE_IsCurrentColor AGMCORE_plate_ndx 4 lt and ColorSpace 1 get AGMCORE_IsSeparationAProcessColor not and - { - ColorSpace 2 get dup type/arraytype eq{0 get}if/DeviceCMYK eq - { - /ColorSpace - [ - /Separation - ColorSpace 1 get - /DeviceGray - [ - ColorSpace 3 get/exec cvx - 4 AGMCORE_plate_ndx sub -1/roll cvx - 4 1/roll cvx - 3[/pop cvx]cvx/repeat cvx - 1/exch cvx/sub cvx - ]cvx - ]def - }{ - AGMCORE_report_unsupported_color_space - AGMCORE_black_plate not - { - currentdict 0 false AGMCORE_separateShading - }if - }ifelse - }{ - currentdict ColorSpace 1 get AGMCORE_IsCurrentColor - 0 exch - dup not currentoverprint and - {/AGMCORE_ignoreshade true def}if - AGMCORE_separateShading - }ifelse - }if - currentdict - end exch - }if - dup 0 get/DeviceN eq - { - exch begin - ColorSpace 1 get convert_to_process - { - ColorSpace 2 get dup type/arraytype eq{0 get}if/DeviceCMYK eq - { - /ColorSpace - [ - /DeviceN - ColorSpace 1 get - /DeviceGray - [ - ColorSpace 3 get/exec cvx - 4 AGMCORE_plate_ndx sub -1/roll cvx - 4 1/roll cvx - 3[/pop cvx]cvx/repeat cvx - 1/exch cvx/sub cvx - ]cvx - ]def - }{ - AGMCORE_report_unsupported_color_space - AGMCORE_black_plate not - { - currentdict 0 false AGMCORE_separateShading - /ColorSpace[/DeviceGray]def - }if - }ifelse - }{ - currentdict - false -1 ColorSpace 1 get - { - AGMCORE_IsCurrentColor - { - 1 add - exch pop true exch exit - }if - 1 add - }forall - exch - dup not currentoverprint and - {/AGMCORE_ignoreshade true def}if - AGMCORE_separateShading - }ifelse - currentdict - end exch - }if - dup 0 get dup/DeviceCMYK eq exch dup/Separation eq exch/DeviceN eq or or not - { - exch begin - ColorSpace dup type/arraytype eq - {0 get}if - /DeviceGray ne - { - AGMCORE_report_unsupported_color_space - AGMCORE_black_plate not - { - ColorSpace 0 get/CIEBasedA eq - { - /ColorSpace[/Separation/_ciebaseda_/DeviceGray{}]def - }if - ColorSpace 0 get dup/CIEBasedABC eq exch dup/CIEBasedDEF eq exch/DeviceRGB eq or or - { - /ColorSpace[/DeviceN[/_red_/_green_/_blue_]/DeviceRGB{}]def - }if - ColorSpace 0 get/CIEBasedDEFG eq - { - /ColorSpace[/DeviceN[/_cyan_/_magenta_/_yellow_/_black_]/DeviceCMYK{}]def - }if - currentdict 0 false AGMCORE_separateShading - }if - }if - currentdict - end exch - }if - pop - dup/AGMCORE_ignoreshade known - { - begin - /ColorSpace[/Separation(None)/DeviceGray{}]def - currentdict end - }if - }def - /shfill - { - AGMCORE_separateShadingDict - dup/AGMCORE_ignoreshade known - {pop} - {AGMCORE_&sysshfill}ifelse - }def - /makepattern - { - exch - dup/PatternType get 2 eq - { - clonedict - begin - /Shading Shading AGMCORE_separateShadingDict def - Shading/AGMCORE_ignoreshade known - currentdict end exch - {pop<>}if - exch AGMCORE_&sysmakepattern - }{ - exch AGMCORE_&usrmakepattern - }ifelse - }def - }if - }if - AGMCORE_in_rip_sep{ - /setcustomcolor - { - exch aload pop - dup 7 1 roll inRip_spot_has_ink not { - 4{4 index mul 4 1 roll} - repeat - /DeviceCMYK setcolorspace - 6 -2 roll pop pop - }{ - //Adobe_AGM_Core begin - /AGMCORE_k xdf/AGMCORE_y xdf/AGMCORE_m xdf/AGMCORE_c xdf - end - [/Separation 4 -1 roll/DeviceCMYK - {dup AGMCORE_c mul exch dup AGMCORE_m mul exch dup AGMCORE_y mul exch AGMCORE_k mul} - ] - setcolorspace - }ifelse - setcolor - }ndf - /setseparationgray - { - [/Separation(All)/DeviceGray{}]setcolorspace_opt - 1 exch sub setcolor - }ndf - }{ - /setseparationgray - { - AGMCORE_&setgray - }ndf - }ifelse - /findcmykcustomcolor - { - 5 makereadonlyarray - }ndf - /setcustomcolor - { - exch aload pop pop - 4{4 index mul 4 1 roll}repeat - setcmykcolor pop - }ndf - /has_color - /colorimage where{ - AGMCORE_producing_seps{ - pop true - }{ - systemdict eq - }ifelse - }{ - false - }ifelse - def - /map_index - { - 1 index mul exch getinterval{255 div}forall - }bdf - /map_indexed_devn - { - Lookup Names length 3 -1 roll cvi map_index - }bdf - /n_color_components - { - base_colorspace_type - dup/DeviceGray eq{ - pop 1 - }{ - /DeviceCMYK eq{ - 4 - }{ - 3 - }ifelse - }ifelse - }bdf - level2{ - /mo/moveto ldf - /li/lineto ldf - /cv/curveto ldf - /knockout_unitsq - { - 1 setgray - 0 0 1 1 rectfill - }def - level2/setcolorspace AGMCORE_key_known not and{ - /AGMCORE_&&&setcolorspace/setcolorspace ldf - /AGMCORE_ReplaceMappedColor - { - dup type dup/arraytype eq exch/packedarraytype eq or - { - /AGMCORE_SpotAliasAry2 where{ - begin - dup 0 get dup/Separation eq - { - pop - dup length array copy - dup dup 1 get - current_spot_alias - { - dup map_alias - { - false set_spot_alias - dup 1 exch setsepcolorspace - true set_spot_alias - begin - /sep_colorspace_dict currentdict AGMCORE_gput - pop pop pop - [ - /Separation Name - CSA map_csa - MappedCSA - /sep_colorspace_proc load - ] - dup Name - end - }if - }if - map_reserved_ink_name 1 xpt - }{ - /DeviceN eq - { - dup length array copy - dup dup 1 get[ - exch{ - current_spot_alias{ - dup map_alias{ - /Name get exch pop - }if - }if - map_reserved_ink_name - }forall - ]1 xpt - }if - }ifelse - end - }if - }if - }def - /setcolorspace - { - dup type dup/arraytype eq exch/packedarraytype eq or - { - dup 0 get/Indexed eq - { - AGMCORE_distilling - { - /PhotoshopDuotoneList where - { - pop false - }{ - true - }ifelse - }{ - true - }ifelse - { - aload pop 3 -1 roll - AGMCORE_ReplaceMappedColor - 3 1 roll 4 array astore - }if - }{ - AGMCORE_ReplaceMappedColor - }ifelse - }if - DeviceN_PS2_inRip_seps{AGMCORE_&&&setcolorspace}if - }def - }if - }{ - /adj - { - currentstrokeadjust{ - transform - 0.25 sub round 0.25 add exch - 0.25 sub round 0.25 add exch - itransform - }if - }def - /mo{ - adj moveto - }def - /li{ - adj lineto - }def - /cv{ - 6 2 roll adj - 6 2 roll adj - 6 2 roll adj curveto - }def - /knockout_unitsq - { - 1 setgray - 8 8 1[8 0 0 8 0 0]{}image - }def - /currentstrokeadjust{ - /currentstrokeadjust AGMCORE_gget - }def - /setstrokeadjust{ - /currentstrokeadjust exch AGMCORE_gput - }def - /setcolorspace - { - /currentcolorspace exch AGMCORE_gput - }def - /currentcolorspace - { - /currentcolorspace AGMCORE_gget - }def - /setcolor_devicecolor - { - base_colorspace_type - dup/DeviceGray eq{ - pop setgray - }{ - /DeviceCMYK eq{ - setcmykcolor - }{ - setrgbcolor - }ifelse - }ifelse - }def - /setcolor - { - currentcolorspace 0 get - dup/DeviceGray ne{ - dup/DeviceCMYK ne{ - dup/DeviceRGB ne{ - dup/Separation eq{ - pop - currentcolorspace 3 gx - currentcolorspace 2 get - }{ - dup/Indexed eq{ - pop - currentcolorspace 3 get dup type/stringtype eq{ - currentcolorspace 1 get n_color_components - 3 -1 roll map_index - }{ - exec - }ifelse - currentcolorspace 1 get - }{ - /AGMCORE_cur_err/AGMCORE_invalid_color_space def - AGMCORE_invalid_color_space - }ifelse - }ifelse - }if - }if - }if - setcolor_devicecolor - }def - }ifelse - /sop/setoverprint ldf - /lw/setlinewidth ldf - /lc/setlinecap ldf - /lj/setlinejoin ldf - /ml/setmiterlimit ldf - /dsh/setdash ldf - /sadj/setstrokeadjust ldf - /gry/setgray ldf - /rgb/setrgbcolor ldf - /cmyk[ - /currentcolorspace[/DeviceCMYK]/AGMCORE_gput cvx - /setcmykcolor load dup type/operatortype ne{/exec cvx}if - ]cvx bdf - level3 AGMCORE_host_sep not and{ - /nzopmsc{ - 6 dict begin - /kk exch def - /yy exch def - /mm exch def - /cc exch def - /sum 0 def - cc 0 ne{/sum sum 2#1000 or def cc}if - mm 0 ne{/sum sum 2#0100 or def mm}if - yy 0 ne{/sum sum 2#0010 or def yy}if - kk 0 ne{/sum sum 2#0001 or def kk}if - AGMCORE_CMYKDeviceNColorspaces sum get setcolorspace - sum 0 eq{0}if - end - setcolor - }bdf - }{ - /nzopmsc/cmyk ldf - }ifelse - /sep/setsepcolor ldf - /devn/setdevicencolor ldf - /idx/setindexedcolor ldf - /colr/setcolor ldf - /csacrd/set_csa_crd ldf - /sepcs/setsepcolorspace ldf - /devncs/setdevicencolorspace ldf - /idxcs/setindexedcolorspace ldf - /cp/closepath ldf - /clp/clp_npth ldf - /eclp/eoclp_npth ldf - /f/fill ldf - /ef/eofill ldf - /@/stroke ldf - /nclp/npth_clp ldf - /gset/graphic_setup ldf - /gcln/graphic_cleanup ldf - /ct/concat ldf - /cf/currentfile ldf - /fl/filter ldf - /rs/readstring ldf - /AGMCORE_def_ht currenthalftone def - /clonedict Adobe_AGM_Utils begin/clonedict load end def - /clonearray Adobe_AGM_Utils begin/clonearray load end def - currentdict{ - dup xcheck 1 index type dup/arraytype eq exch/packedarraytype eq or and{ - bind - }if - def - }forall - /getrampcolor - { - /indx exch def - 0 1 NumComp 1 sub - { - dup - Samples exch get - dup type/stringtype eq{indx get}if - exch - Scaling exch get aload pop - 3 1 roll - mul add - }for - ColorSpaceFamily/Separation eq - {sep} - { - ColorSpaceFamily/DeviceN eq - {devn}{setcolor}ifelse - }ifelse - }bdf - /sssetbackground{ - aload pop - ColorSpaceFamily/Separation eq - {sep} - { - ColorSpaceFamily/DeviceN eq - {devn}{setcolor}ifelse - }ifelse - }bdf - /RadialShade - { - 40 dict begin - /ColorSpaceFamily xdf - /background xdf - /ext1 xdf - /ext0 xdf - /BBox xdf - /r2 xdf - /c2y xdf - /c2x xdf - /r1 xdf - /c1y xdf - /c1x xdf - /rampdict xdf - /setinkoverprint where{pop/setinkoverprint{pop}def}if - gsave - BBox length 0 gt - { - np - BBox 0 get BBox 1 get moveto - BBox 2 get BBox 0 get sub 0 rlineto - 0 BBox 3 get BBox 1 get sub rlineto - BBox 2 get BBox 0 get sub neg 0 rlineto - closepath - clip - np - }if - c1x c2x eq - { - c1y c2y lt{/theta 90 def}{/theta 270 def}ifelse - }{ - /slope c2y c1y sub c2x c1x sub div def - /theta slope 1 atan def - c2x c1x lt c2y c1y ge and{/theta theta 180 sub def}if - c2x c1x lt c2y c1y lt and{/theta theta 180 add def}if - }ifelse - gsave - clippath - c1x c1y translate - theta rotate - -90 rotate - {pathbbox}stopped - {0 0 0 0}if - /yMax xdf - /xMax xdf - /yMin xdf - /xMin xdf - grestore - xMax xMin eq yMax yMin eq or - { - grestore - end - }{ - /max{2 copy gt{pop}{exch pop}ifelse}bdf - /min{2 copy lt{pop}{exch pop}ifelse}bdf - rampdict begin - 40 dict begin - background length 0 gt{background sssetbackground gsave clippath fill grestore}if - gsave - c1x c1y translate - theta rotate - -90 rotate - /c2y c1x c2x sub dup mul c1y c2y sub dup mul add sqrt def - /c1y 0 def - /c1x 0 def - /c2x 0 def - ext0 - { - 0 getrampcolor - c2y r2 add r1 sub 0.0001 lt - { - c1x c1y r1 360 0 arcn - pathbbox - /aymax exch def - /axmax exch def - /aymin exch def - /axmin exch def - /bxMin xMin axmin min def - /byMin yMin aymin min def - /bxMax xMax axmax max def - /byMax yMax aymax max def - bxMin byMin moveto - bxMax byMin lineto - bxMax byMax lineto - bxMin byMax lineto - bxMin byMin lineto - eofill - }{ - c2y r1 add r2 le - { - c1x c1y r1 0 360 arc - fill - } - { - c2x c2y r2 0 360 arc fill - r1 r2 eq - { - /p1x r1 neg def - /p1y c1y def - /p2x r1 def - /p2y c1y def - p1x p1y moveto p2x p2y lineto p2x yMin lineto p1x yMin lineto - fill - }{ - /AA r2 r1 sub c2y div def - AA -1 eq - {/theta 89.99 def} - {/theta AA 1 AA dup mul sub sqrt div 1 atan def} - ifelse - /SS1 90 theta add dup sin exch cos div def - /p1x r1 SS1 SS1 mul SS1 SS1 mul 1 add div sqrt mul neg def - /p1y p1x SS1 div neg def - /SS2 90 theta sub dup sin exch cos div def - /p2x r1 SS2 SS2 mul SS2 SS2 mul 1 add div sqrt mul def - /p2y p2x SS2 div neg def - r1 r2 gt - { - /L1maxX p1x yMin p1y sub SS1 div add def - /L2maxX p2x yMin p2y sub SS2 div add def - }{ - /L1maxX 0 def - /L2maxX 0 def - }ifelse - p1x p1y moveto p2x p2y lineto L2maxX L2maxX p2x sub SS2 mul p2y add lineto - L1maxX L1maxX p1x sub SS1 mul p1y add lineto - fill - }ifelse - }ifelse - }ifelse - }if - c1x c2x sub dup mul - c1y c2y sub dup mul - add 0.5 exp - 0 dtransform - dup mul exch dup mul add 0.5 exp 72 div - 0 72 matrix defaultmatrix dtransform dup mul exch dup mul add sqrt - 72 0 matrix defaultmatrix dtransform dup mul exch dup mul add sqrt - 1 index 1 index lt{exch}if pop - /hires xdf - hires mul - /numpix xdf - /numsteps NumSamples def - /rampIndxInc 1 def - /subsampling false def - numpix 0 ne - { - NumSamples numpix div 0.5 gt - { - /numsteps numpix 2 div round cvi dup 1 le{pop 2}if def - /rampIndxInc NumSamples 1 sub numsteps div def - /subsampling true def - }if - }if - /xInc c2x c1x sub numsteps div def - /yInc c2y c1y sub numsteps div def - /rInc r2 r1 sub numsteps div def - /cx c1x def - /cy c1y def - /radius r1 def - np - xInc 0 eq yInc 0 eq rInc 0 eq and and - { - 0 getrampcolor - cx cy radius 0 360 arc - stroke - NumSamples 1 sub getrampcolor - cx cy radius 72 hires div add 0 360 arc - 0 setlinewidth - stroke - }{ - 0 - numsteps - { - dup - subsampling{round cvi}if - getrampcolor - cx cy radius 0 360 arc - /cx cx xInc add def - /cy cy yInc add def - /radius radius rInc add def - cx cy radius 360 0 arcn - eofill - rampIndxInc add - }repeat - pop - }ifelse - ext1 - { - c2y r2 add r1 lt - { - c2x c2y r2 0 360 arc - fill - }{ - c2y r1 add r2 sub 0.0001 le - { - c2x c2y r2 360 0 arcn - pathbbox - /aymax exch def - /axmax exch def - /aymin exch def - /axmin exch def - /bxMin xMin axmin min def - /byMin yMin aymin min def - /bxMax xMax axmax max def - /byMax yMax aymax max def - bxMin byMin moveto - bxMax byMin lineto - bxMax byMax lineto - bxMin byMax lineto - bxMin byMin lineto - eofill - }{ - c2x c2y r2 0 360 arc fill - r1 r2 eq - { - /p1x r2 neg def - /p1y c2y def - /p2x r2 def - /p2y c2y def - p1x p1y moveto p2x p2y lineto p2x yMax lineto p1x yMax lineto - fill - }{ - /AA r2 r1 sub c2y div def - AA -1 eq - {/theta 89.99 def} - {/theta AA 1 AA dup mul sub sqrt div 1 atan def} - ifelse - /SS1 90 theta add dup sin exch cos div def - /p1x r2 SS1 SS1 mul SS1 SS1 mul 1 add div sqrt mul neg def - /p1y c2y p1x SS1 div sub def - /SS2 90 theta sub dup sin exch cos div def - /p2x r2 SS2 SS2 mul SS2 SS2 mul 1 add div sqrt mul def - /p2y c2y p2x SS2 div sub def - r1 r2 lt - { - /L1maxX p1x yMax p1y sub SS1 div add def - /L2maxX p2x yMax p2y sub SS2 div add def - }{ - /L1maxX 0 def - /L2maxX 0 def - }ifelse - p1x p1y moveto p2x p2y lineto L2maxX L2maxX p2x sub SS2 mul p2y add lineto - L1maxX L1maxX p1x sub SS1 mul p1y add lineto - fill - }ifelse - }ifelse - }ifelse - }if - grestore - grestore - end - end - end - }ifelse - }bdf - /GenStrips - { - 40 dict begin - /ColorSpaceFamily xdf - /background xdf - /ext1 xdf - /ext0 xdf - /BBox xdf - /y2 xdf - /x2 xdf - /y1 xdf - /x1 xdf - /rampdict xdf - /setinkoverprint where{pop/setinkoverprint{pop}def}if - gsave - BBox length 0 gt - { - np - BBox 0 get BBox 1 get moveto - BBox 2 get BBox 0 get sub 0 rlineto - 0 BBox 3 get BBox 1 get sub rlineto - BBox 2 get BBox 0 get sub neg 0 rlineto - closepath - clip - np - }if - x1 x2 eq - { - y1 y2 lt{/theta 90 def}{/theta 270 def}ifelse - }{ - /slope y2 y1 sub x2 x1 sub div def - /theta slope 1 atan def - x2 x1 lt y2 y1 ge and{/theta theta 180 sub def}if - x2 x1 lt y2 y1 lt and{/theta theta 180 add def}if - } - ifelse - gsave - clippath - x1 y1 translate - theta rotate - {pathbbox}stopped - {0 0 0 0}if - /yMax exch def - /xMax exch def - /yMin exch def - /xMin exch def - grestore - xMax xMin eq yMax yMin eq or - { - grestore - end - }{ - rampdict begin - 20 dict begin - background length 0 gt{background sssetbackground gsave clippath fill grestore}if - gsave - x1 y1 translate - theta rotate - /xStart 0 def - /xEnd x2 x1 sub dup mul y2 y1 sub dup mul add 0.5 exp def - /ySpan yMax yMin sub def - /numsteps NumSamples def - /rampIndxInc 1 def - /subsampling false def - xStart 0 transform - xEnd 0 transform - 3 -1 roll - sub dup mul - 3 1 roll - sub dup mul - add 0.5 exp 72 div - 0 72 matrix defaultmatrix dtransform dup mul exch dup mul add sqrt - 72 0 matrix defaultmatrix dtransform dup mul exch dup mul add sqrt - 1 index 1 index lt{exch}if pop - mul - /numpix xdf - numpix 0 ne - { - NumSamples numpix div 0.5 gt - { - /numsteps numpix 2 div round cvi dup 1 le{pop 2}if def - /rampIndxInc NumSamples 1 sub numsteps div def - /subsampling true def - }if - }if - ext0 - { - 0 getrampcolor - xMin xStart lt - { - xMin yMin xMin neg ySpan rectfill - }if - }if - /xInc xEnd xStart sub numsteps div def - /x xStart def - 0 - numsteps - { - dup - subsampling{round cvi}if - getrampcolor - x yMin xInc ySpan rectfill - /x x xInc add def - rampIndxInc add - }repeat - pop - ext1{ - xMax xEnd gt - { - xEnd yMin xMax xEnd sub ySpan rectfill - }if - }if - grestore - grestore - end - end - end - }ifelse - }bdf -}def -/pt -{ - end -}def -/dt{ -}def -/pgsv{ - //Adobe_AGM_Core/AGMCORE_save save put -}def -/pgrs{ - //Adobe_AGM_Core/AGMCORE_save get restore -}def -systemdict/findcolorrendering known{ - /findcolorrendering systemdict/findcolorrendering get def -}if -systemdict/setcolorrendering known{ - /setcolorrendering systemdict/setcolorrendering get def -}if -/test_cmyk_color_plate -{ - gsave - setcmykcolor currentgray 1 ne - grestore -}def -/inRip_spot_has_ink -{ - dup//Adobe_AGM_Core/AGMCORE_name xddf - convert_spot_to_process not -}def -/map255_to_range -{ - 1 index sub - 3 -1 roll 255 div mul add -}def -/set_csa_crd -{ - /sep_colorspace_dict null AGMCORE_gput - begin - CSA get_csa_by_name setcolorspace_opt - set_crd - end -} -def -/map_csa -{ - currentdict/MappedCSA known{MappedCSA null ne}{false}ifelse - {pop}{get_csa_by_name/MappedCSA xdf}ifelse -}def -/setsepcolor -{ - /sep_colorspace_dict AGMCORE_gget begin - dup/sep_tint exch AGMCORE_gput - TintProc - end -}def -/setdevicencolor -{ - /devicen_colorspace_dict AGMCORE_gget begin - Names length copy - Names length 1 sub -1 0 - { - /devicen_tints AGMCORE_gget 3 1 roll xpt - }for - TintProc - end -}def -/sep_colorspace_proc -{ - /AGMCORE_tmp exch store - /sep_colorspace_dict AGMCORE_gget begin - currentdict/Components known{ - Components aload pop - TintMethod/Lab eq{ - 2{AGMCORE_tmp mul NComponents 1 roll}repeat - LMax sub AGMCORE_tmp mul LMax add NComponents 1 roll - }{ - TintMethod/Subtractive eq{ - NComponents{ - AGMCORE_tmp mul NComponents 1 roll - }repeat - }{ - NComponents{ - 1 sub AGMCORE_tmp mul 1 add NComponents 1 roll - }repeat - }ifelse - }ifelse - }{ - ColorLookup AGMCORE_tmp ColorLookup length 1 sub mul round cvi get - aload pop - }ifelse - end -}def -/sep_colorspace_gray_proc -{ - /AGMCORE_tmp exch store - /sep_colorspace_dict AGMCORE_gget begin - GrayLookup AGMCORE_tmp GrayLookup length 1 sub mul round cvi get - end -}def -/sep_proc_name -{ - dup 0 get - dup/DeviceRGB eq exch/DeviceCMYK eq or level2 not and has_color not and{ - pop[/DeviceGray] - /sep_colorspace_gray_proc - }{ - /sep_colorspace_proc - }ifelse -}def -/setsepcolorspace -{ - current_spot_alias{ - dup begin - Name map_alias{ - exch pop - }if - end - }if - dup/sep_colorspace_dict exch AGMCORE_gput - begin - CSA map_csa - /AGMCORE_sep_special Name dup()eq exch(All)eq or store - AGMCORE_avoid_L2_sep_space{ - [/Indexed MappedCSA sep_proc_name 255 exch - {255 div}/exec cvx 3 -1 roll[4 1 roll load/exec cvx]cvx - ]setcolorspace_opt - /TintProc{ - 255 mul round cvi setcolor - }bdf - }{ - MappedCSA 0 get/DeviceCMYK eq - currentdict/Components known and - AGMCORE_sep_special not and{ - /TintProc[ - Components aload pop Name findcmykcustomcolor - /exch cvx/setcustomcolor cvx - ]cvx bdf - }{ - AGMCORE_host_sep Name(All)eq and{ - /TintProc{ - 1 exch sub setseparationgray - }bdf - }{ - AGMCORE_in_rip_sep MappedCSA 0 get/DeviceCMYK eq and - AGMCORE_host_sep or - Name()eq and{ - /TintProc[ - MappedCSA sep_proc_name exch 0 get/DeviceCMYK eq{ - cvx/setcmykcolor cvx - }{ - cvx/setgray cvx - }ifelse - ]cvx bdf - }{ - AGMCORE_producing_seps MappedCSA 0 get dup/DeviceCMYK eq exch/DeviceGray eq or and AGMCORE_sep_special not and{ - /TintProc[ - /dup cvx - MappedCSA sep_proc_name cvx exch - 0 get/DeviceGray eq{ - 1/exch cvx/sub cvx 0 0 0 4 -1/roll cvx - }if - /Name cvx/findcmykcustomcolor cvx/exch cvx - AGMCORE_host_sep{ - AGMCORE_is_cmyk_sep - /Name cvx - /AGMCORE_IsSeparationAProcessColor load/exec cvx - /not cvx/and cvx - }{ - Name inRip_spot_has_ink not - }ifelse - [ - /pop cvx 1 - ]cvx/if cvx - /setcustomcolor cvx - ]cvx bdf - }{ - /TintProc{setcolor}bdf - [/Separation Name MappedCSA sep_proc_name load]setcolorspace_opt - }ifelse - }ifelse - }ifelse - }ifelse - }ifelse - set_crd - setsepcolor - end -}def -/additive_blend -{ - 3 dict begin - /numarrays xdf - /numcolors xdf - 0 1 numcolors 1 sub - { - /c1 xdf - 1 - 0 1 numarrays 1 sub - { - 1 exch add/index cvx - c1/get cvx/mul cvx - }for - numarrays 1 add 1/roll cvx - }for - numarrays[/pop cvx]cvx/repeat cvx - end -}def -/subtractive_blend -{ - 3 dict begin - /numarrays xdf - /numcolors xdf - 0 1 numcolors 1 sub - { - /c1 xdf - 1 1 - 0 1 numarrays 1 sub - { - 1 3 3 -1 roll add/index cvx - c1/get cvx/sub cvx/mul cvx - }for - /sub cvx - numarrays 1 add 1/roll cvx - }for - numarrays[/pop cvx]cvx/repeat cvx - end -}def -/exec_tint_transform -{ - /TintProc[ - /TintTransform cvx/setcolor cvx - ]cvx bdf - MappedCSA setcolorspace_opt -}bdf -/devn_makecustomcolor -{ - 2 dict begin - /names_index xdf - /Names xdf - 1 1 1 1 Names names_index get findcmykcustomcolor - /devicen_tints AGMCORE_gget names_index get setcustomcolor - Names length{pop}repeat - end -}bdf -/setdevicencolorspace -{ - dup/AliasedColorants known{false}{true}ifelse - current_spot_alias and{ - 7 dict begin - /names_index 0 def - dup/names_len exch/Names get length def - /new_names names_len array def - /new_LookupTables names_len array def - /alias_cnt 0 def - dup/Names get - { - dup map_alias{ - exch pop - dup/ColorLookup known{ - dup begin - new_LookupTables names_index ColorLookup put - end - }{ - dup/Components known{ - dup begin - new_LookupTables names_index Components put - end - }{ - dup begin - new_LookupTables names_index[null null null null]put - end - }ifelse - }ifelse - new_names names_index 3 -1 roll/Name get put - /alias_cnt alias_cnt 1 add def - }{ - /name xdf - new_names names_index name put - dup/LookupTables known{ - dup begin - new_LookupTables names_index LookupTables names_index get put - end - }{ - dup begin - new_LookupTables names_index[null null null null]put - end - }ifelse - }ifelse - /names_index names_index 1 add def - }forall - alias_cnt 0 gt{ - /AliasedColorants true def - /lut_entry_len new_LookupTables 0 get dup length 256 ge{0 get length}{length}ifelse def - 0 1 names_len 1 sub{ - /names_index xdf - new_LookupTables names_index get dup length 256 ge{0 get length}{length}ifelse lut_entry_len ne{ - /AliasedColorants false def - exit - }{ - new_LookupTables names_index get 0 get null eq{ - dup/Names get names_index get/name xdf - name(Cyan)eq name(Magenta)eq name(Yellow)eq name(Black)eq - or or or not{ - /AliasedColorants false def - exit - }if - }if - }ifelse - }for - lut_entry_len 1 eq{ - /AliasedColorants false def - }if - AliasedColorants{ - dup begin - /Names new_names def - /LookupTables new_LookupTables def - /AliasedColorants true def - /NComponents lut_entry_len def - /TintMethod NComponents 4 eq{/Subtractive}{/Additive}ifelse def - /MappedCSA TintMethod/Additive eq{/DeviceRGB}{/DeviceCMYK}ifelse def - currentdict/TTTablesIdx known not{ - /TTTablesIdx -1 def - }if - end - }if - }if - end - }if - dup/devicen_colorspace_dict exch AGMCORE_gput - begin - currentdict/AliasedColorants known{ - AliasedColorants - }{ - false - }ifelse - dup not{ - CSA map_csa - }if - /TintTransform load type/nulltype eq or{ - /TintTransform[ - 0 1 Names length 1 sub - { - /TTTablesIdx TTTablesIdx 1 add def - dup LookupTables exch get dup 0 get null eq - { - 1 index - Names exch get - dup(Cyan)eq - { - pop exch - LookupTables length exch sub - /index cvx - 0 0 0 - } - { - dup(Magenta)eq - { - pop exch - LookupTables length exch sub - /index cvx - 0/exch cvx 0 0 - }{ - (Yellow)eq - { - exch - LookupTables length exch sub - /index cvx - 0 0 3 -1/roll cvx 0 - }{ - exch - LookupTables length exch sub - /index cvx - 0 0 0 4 -1/roll cvx - }ifelse - }ifelse - }ifelse - 5 -1/roll cvx/astore cvx - }{ - dup length 1 sub - LookupTables length 4 -1 roll sub 1 add - /index cvx/mul cvx/round cvx/cvi cvx/get cvx - }ifelse - Names length TTTablesIdx add 1 add 1/roll cvx - }for - Names length[/pop cvx]cvx/repeat cvx - NComponents Names length - TintMethod/Subtractive eq - { - subtractive_blend - }{ - additive_blend - }ifelse - ]cvx bdf - }if - AGMCORE_host_sep{ - Names convert_to_process{ - exec_tint_transform - } - { - currentdict/AliasedColorants known{ - AliasedColorants not - }{ - false - }ifelse - 5 dict begin - /AvoidAliasedColorants xdf - /painted? false def - /names_index 0 def - /names_len Names length def - AvoidAliasedColorants{ - /currentspotalias current_spot_alias def - false set_spot_alias - }if - Names{ - AGMCORE_is_cmyk_sep{ - dup(Cyan)eq AGMCORE_cyan_plate and exch - dup(Magenta)eq AGMCORE_magenta_plate and exch - dup(Yellow)eq AGMCORE_yellow_plate and exch - (Black)eq AGMCORE_black_plate and or or or{ - /devicen_colorspace_dict AGMCORE_gget/TintProc[ - Names names_index/devn_makecustomcolor cvx - ]cvx ddf - /painted? true def - }if - painted?{exit}if - }{ - 0 0 0 0 5 -1 roll findcmykcustomcolor 1 setcustomcolor currentgray 0 eq{ - /devicen_colorspace_dict AGMCORE_gget/TintProc[ - Names names_index/devn_makecustomcolor cvx - ]cvx ddf - /painted? true def - exit - }if - }ifelse - /names_index names_index 1 add def - }forall - AvoidAliasedColorants{ - currentspotalias set_spot_alias - }if - painted?{ - /devicen_colorspace_dict AGMCORE_gget/names_index names_index put - }{ - /devicen_colorspace_dict AGMCORE_gget/TintProc[ - names_len[/pop cvx]cvx/repeat cvx 1/setseparationgray cvx - 0 0 0 0/setcmykcolor cvx - ]cvx ddf - }ifelse - end - }ifelse - } - { - AGMCORE_in_rip_sep{ - Names convert_to_process not - }{ - level3 - }ifelse - { - [/DeviceN Names MappedCSA/TintTransform load]setcolorspace_opt - /TintProc level3 not AGMCORE_in_rip_sep and{ - [ - Names/length cvx[/pop cvx]cvx/repeat cvx - ]cvx bdf - }{ - {setcolor}bdf - }ifelse - }{ - exec_tint_transform - }ifelse - }ifelse - set_crd - /AliasedColorants false def - end -}def -/setindexedcolorspace -{ - dup/indexed_colorspace_dict exch AGMCORE_gput - begin - currentdict/CSDBase known{ - CSDBase/CSD get_res begin - currentdict/Names known{ - currentdict devncs - }{ - 1 currentdict sepcs - }ifelse - AGMCORE_host_sep{ - 4 dict begin - /compCnt/Names where{pop Names length}{1}ifelse def - /NewLookup HiVal 1 add string def - 0 1 HiVal{ - /tableIndex xdf - Lookup dup type/stringtype eq{ - compCnt tableIndex map_index - }{ - exec - }ifelse - /Names where{ - pop setdevicencolor - }{ - setsepcolor - }ifelse - currentgray - tableIndex exch - 255 mul cvi - NewLookup 3 1 roll put - }for - [/Indexed currentcolorspace HiVal NewLookup]setcolorspace_opt - end - }{ - level3 - { - currentdict/Names known{ - [/Indexed[/DeviceN Names MappedCSA/TintTransform load]HiVal Lookup]setcolorspace_opt - }{ - [/Indexed[/Separation Name MappedCSA sep_proc_name load]HiVal Lookup]setcolorspace_opt - }ifelse - }{ - [/Indexed MappedCSA HiVal - [ - currentdict/Names known{ - Lookup dup type/stringtype eq - {/exch cvx CSDBase/CSD get_res/Names get length dup/mul cvx exch/getinterval cvx{255 div}/forall cvx} - {/exec cvx}ifelse - /TintTransform load/exec cvx - }{ - Lookup dup type/stringtype eq - {/exch cvx/get cvx 255/div cvx} - {/exec cvx}ifelse - CSDBase/CSD get_res/MappedCSA get sep_proc_name exch pop/load cvx/exec cvx - }ifelse - ]cvx - ]setcolorspace_opt - }ifelse - }ifelse - end - set_crd - } - { - CSA map_csa - AGMCORE_host_sep level2 not and{ - 0 0 0 0 setcmykcolor - }{ - [/Indexed MappedCSA - level2 not has_color not and{ - dup 0 get dup/DeviceRGB eq exch/DeviceCMYK eq or{ - pop[/DeviceGray] - }if - HiVal GrayLookup - }{ - HiVal - currentdict/RangeArray known{ - { - /indexed_colorspace_dict AGMCORE_gget begin - Lookup exch - dup HiVal gt{ - pop HiVal - }if - NComponents mul NComponents getinterval{}forall - NComponents 1 sub -1 0{ - RangeArray exch 2 mul 2 getinterval aload pop map255_to_range - NComponents 1 roll - }for - end - }bind - }{ - Lookup - }ifelse - }ifelse - ]setcolorspace_opt - set_crd - }ifelse - }ifelse - end -}def -/setindexedcolor -{ - AGMCORE_host_sep{ - /indexed_colorspace_dict AGMCORE_gget - begin - currentdict/CSDBase known{ - CSDBase/CSD get_res begin - currentdict/Names known{ - map_indexed_devn - devn - } - { - Lookup 1 3 -1 roll map_index - sep - }ifelse - end - }{ - Lookup MappedCSA/DeviceCMYK eq{4}{1}ifelse 3 -1 roll - map_index - MappedCSA/DeviceCMYK eq{setcmykcolor}{setgray}ifelse - }ifelse - end - }{ - level3 not AGMCORE_in_rip_sep and/indexed_colorspace_dict AGMCORE_gget/CSDBase known and{ - /indexed_colorspace_dict AGMCORE_gget/CSDBase get/CSD get_res begin - map_indexed_devn - devn - end - } - { - setcolor - }ifelse - }ifelse -}def -/ignoreimagedata -{ - currentoverprint not{ - gsave - dup clonedict begin - 1 setgray - /Decode[0 1]def - /DataSourcedef - /MultipleDataSources false def - /BitsPerComponent 8 def - currentdict end - systemdict/image gx - grestore - }if - consumeimagedata -}def -/add_res -{ - dup/CSD eq{ - pop - //Adobe_AGM_Core begin - /AGMCORE_CSD_cache load 3 1 roll put - end - }{ - defineresource pop - }ifelse -}def -/del_res -{ - { - aload pop exch - dup/CSD eq{ - pop - {//Adobe_AGM_Core/AGMCORE_CSD_cache get exch undef}forall - }{ - exch - {1 index undefineresource}forall - pop - }ifelse - }forall -}def -/get_res -{ - dup/CSD eq{ - pop - dup type dup/nametype eq exch/stringtype eq or{ - AGMCORE_CSD_cache exch get - }if - }{ - findresource - }ifelse -}def -/get_csa_by_name -{ - dup type dup/nametype eq exch/stringtype eq or{ - /CSA get_res - }if -}def -/paintproc_buf_init -{ - /count get 0 0 put -}def -/paintproc_buf_next -{ - dup/count get dup 0 get - dup 3 1 roll - 1 add 0 xpt - get -}def -/cachepaintproc_compress -{ - 5 dict begin - currentfile exch 0 exch/SubFileDecode filter/ReadFilter exch def - /ppdict 20 dict def - /string_size 16000 def - /readbuffer string_size string def - currentglobal true setglobal - ppdict 1 array dup 0 1 put/count xpt - setglobal - /LZWFilter - { - exch - dup length 0 eq{ - pop - }{ - ppdict dup length 1 sub 3 -1 roll put - }ifelse - {string_size}{0}ifelse string - }/LZWEncode filter def - { - ReadFilter readbuffer readstring - exch LZWFilter exch writestring - not{exit}if - }loop - LZWFilter closefile - ppdict - end -}def -/cachepaintproc -{ - 2 dict begin - currentfile exch 0 exch/SubFileDecode filter/ReadFilter exch def - /ppdict 20 dict def - currentglobal true setglobal - ppdict 1 array dup 0 1 put/count xpt - setglobal - { - ReadFilter 16000 string readstring exch - ppdict dup length 1 sub 3 -1 roll put - not{exit}if - }loop - ppdict dup dup length 1 sub()put - end -}def -/make_pattern -{ - exch clonedict exch - dup matrix currentmatrix matrix concatmatrix 0 0 3 2 roll itransform - exch 3 index/XStep get 1 index exch 2 copy div cvi mul sub sub - exch 3 index/YStep get 1 index exch 2 copy div cvi mul sub sub - matrix translate exch matrix concatmatrix - 1 index begin - BBox 0 get XStep div cvi XStep mul/xshift exch neg def - BBox 1 get YStep div cvi YStep mul/yshift exch neg def - BBox 0 get xshift add - BBox 1 get yshift add - BBox 2 get xshift add - BBox 3 get yshift add - 4 array astore - /BBox exch def - [xshift yshift/translate load null/exec load]dup - 3/PaintProc load put cvx/PaintProc exch def - end - gsave 0 setgray - makepattern - grestore -}def -/set_pattern -{ - dup/PatternType get 1 eq{ - dup/PaintType get 1 eq{ - currentoverprint sop[/DeviceGray]setcolorspace 0 setgray - }if - }if - setpattern -}def -/setcolorspace_opt -{ - dup currentcolorspace eq{pop}{setcolorspace}ifelse -}def -/updatecolorrendering -{ - currentcolorrendering/RenderingIntent known{ - currentcolorrendering/RenderingIntent get - } - { - Intent/AbsoluteColorimetric eq - { - /absolute_colorimetric_crd AGMCORE_gget dup null eq - } - { - Intent/RelativeColorimetric eq - { - /relative_colorimetric_crd AGMCORE_gget dup null eq - } - { - Intent/Saturation eq - { - /saturation_crd AGMCORE_gget dup null eq - } - { - /perceptual_crd AGMCORE_gget dup null eq - }ifelse - }ifelse - }ifelse - { - pop null - } - { - /RenderingIntent known{null}{Intent}ifelse - }ifelse - }ifelse - Intent ne{ - Intent/ColorRendering{findresource}stopped - { - pop pop systemdict/findcolorrendering known - { - Intent findcolorrendering - { - /ColorRendering findresource true exch - } - { - /ColorRendering findresource - product(Xerox Phaser 5400)ne - exch - }ifelse - dup Intent/AbsoluteColorimetric eq - { - /absolute_colorimetric_crd exch AGMCORE_gput - } - { - Intent/RelativeColorimetric eq - { - /relative_colorimetric_crd exch AGMCORE_gput - } - { - Intent/Saturation eq - { - /saturation_crd exch AGMCORE_gput - } - { - Intent/Perceptual eq - { - /perceptual_crd exch AGMCORE_gput - } - { - pop - }ifelse - }ifelse - }ifelse - }ifelse - 1 index{exch}{pop}ifelse - } - {false}ifelse - } - {true}ifelse - { - dup begin - currentdict/TransformPQR known{ - currentdict/TransformPQR get aload pop - 3{{}eq 3 1 roll}repeat or or - } - {true}ifelse - currentdict/MatrixPQR known{ - currentdict/MatrixPQR get aload pop - 1.0 eq 9 1 roll 0.0 eq 9 1 roll 0.0 eq 9 1 roll - 0.0 eq 9 1 roll 1.0 eq 9 1 roll 0.0 eq 9 1 roll - 0.0 eq 9 1 roll 0.0 eq 9 1 roll 1.0 eq - and and and and and and and and - } - {true}ifelse - end - or - { - clonedict begin - /TransformPQR[ - {4 -1 roll 3 get dup 3 1 roll sub 5 -1 roll 3 get 3 -1 roll sub div - 3 -1 roll 3 get 3 -1 roll 3 get dup 4 1 roll sub mul add}bind - {4 -1 roll 4 get dup 3 1 roll sub 5 -1 roll 4 get 3 -1 roll sub div - 3 -1 roll 4 get 3 -1 roll 4 get dup 4 1 roll sub mul add}bind - {4 -1 roll 5 get dup 3 1 roll sub 5 -1 roll 5 get 3 -1 roll sub div - 3 -1 roll 5 get 3 -1 roll 5 get dup 4 1 roll sub mul add}bind - ]def - /MatrixPQR[0.8951 -0.7502 0.0389 0.2664 1.7135 -0.0685 -0.1614 0.0367 1.0296]def - /RangePQR[-0.3227950745 2.3229645538 -1.5003771057 3.5003465881 -0.1369979095 2.136967392]def - currentdict end - }if - setcolorrendering_opt - }if - }if -}def -/set_crd -{ - AGMCORE_host_sep not level2 and{ - currentdict/ColorRendering known{ - ColorRendering/ColorRendering{findresource}stopped not{setcolorrendering_opt}if - }{ - currentdict/Intent known{ - updatecolorrendering - }if - }ifelse - currentcolorspace dup type/arraytype eq - {0 get}if - /DeviceRGB eq - { - currentdict/UCR known - {/UCR}{/AGMCORE_currentucr}ifelse - load setundercolorremoval - currentdict/BG known - {/BG}{/AGMCORE_currentbg}ifelse - load setblackgeneration - }if - }if -}def -/set_ucrbg -{ - dup null eq{pop/AGMCORE_currentbg load}{/Procedure get_res}ifelse setblackgeneration - dup null eq{pop/AGMCORE_currentucr load}{/Procedure get_res}ifelse setundercolorremoval -}def -/setcolorrendering_opt -{ - dup currentcolorrendering eq{ - pop - }{ - clonedict - begin - /Intent Intent def - currentdict - end - setcolorrendering - }ifelse -}def -/cpaint_gcomp -{ - convert_to_process//Adobe_AGM_Core/AGMCORE_ConvertToProcess xddf - //Adobe_AGM_Core/AGMCORE_ConvertToProcess get not - { - (%end_cpaint_gcomp)flushinput - }if -}def -/cpaint_gsep -{ - //Adobe_AGM_Core/AGMCORE_ConvertToProcess get - { - (%end_cpaint_gsep)flushinput - }if -}def -/cpaint_gend -{np}def -/T1_path -{ - currentfile token pop currentfile token pop mo - { - currentfile token pop dup type/stringtype eq - {pop exit}if - 0 exch rlineto - currentfile token pop dup type/stringtype eq - {pop exit}if - 0 rlineto - }loop -}def -/T1_gsave - level3 - {/clipsave} - {/gsave}ifelse - load def -/T1_grestore - level3 - {/cliprestore} - {/grestore}ifelse - load def -/set_spot_alias_ary -{ - dup inherit_aliases - //Adobe_AGM_Core/AGMCORE_SpotAliasAry xddf -}def -/set_spot_normalization_ary -{ - dup inherit_aliases - dup length - /AGMCORE_SpotAliasAry where{pop AGMCORE_SpotAliasAry length add}if - array - //Adobe_AGM_Core/AGMCORE_SpotAliasAry2 xddf - /AGMCORE_SpotAliasAry where{ - pop - AGMCORE_SpotAliasAry2 0 AGMCORE_SpotAliasAry putinterval - AGMCORE_SpotAliasAry length - }{0}ifelse - AGMCORE_SpotAliasAry2 3 1 roll exch putinterval - true set_spot_alias -}def -/inherit_aliases -{ - {dup/Name get map_alias{/CSD put}{pop}ifelse}forall -}def -/set_spot_alias -{ - /AGMCORE_SpotAliasAry2 where{ - /AGMCORE_current_spot_alias 3 -1 roll put - }{ - pop - }ifelse -}def -/current_spot_alias -{ - /AGMCORE_SpotAliasAry2 where{ - /AGMCORE_current_spot_alias get - }{ - false - }ifelse -}def -/map_alias -{ - /AGMCORE_SpotAliasAry2 where{ - begin - /AGMCORE_name xdf - false - AGMCORE_SpotAliasAry2{ - dup/Name get AGMCORE_name eq{ - /CSD get/CSD get_res - exch pop true - exit - }{ - pop - }ifelse - }forall - end - }{ - pop false - }ifelse -}bdf -/spot_alias -{ - true set_spot_alias - /AGMCORE_&setcustomcolor AGMCORE_key_known not{ - //Adobe_AGM_Core/AGMCORE_&setcustomcolor/setcustomcolor load put - }if - /customcolor_tint 1 AGMCORE_gput - //Adobe_AGM_Core begin - /setcustomcolor - { - //Adobe_AGM_Core begin - dup/customcolor_tint exch AGMCORE_gput - 1 index aload pop pop 1 eq exch 1 eq and exch 1 eq and exch 1 eq and not - current_spot_alias and{1 index 4 get map_alias}{false}ifelse - { - false set_spot_alias - /sep_colorspace_dict AGMCORE_gget null ne - 3 1 roll 2 index{ - exch pop/sep_tint AGMCORE_gget exch - }if - mark 3 1 roll - setsepcolorspace - counttomark 0 ne{ - setsepcolor - }if - pop - not{/sep_tint 1.0 AGMCORE_gput}if - pop - true set_spot_alias - }{ - AGMCORE_&setcustomcolor - }ifelse - end - }bdf - end -}def -/begin_feature -{ - Adobe_AGM_Core/AGMCORE_feature_dictCount countdictstack put - count Adobe_AGM_Core/AGMCORE_feature_opCount 3 -1 roll put - {Adobe_AGM_Core/AGMCORE_feature_ctm matrix currentmatrix put}if -}def -/end_feature -{ - 2 dict begin - /spd/setpagedevice load def - /setpagedevice{get_gstate spd set_gstate}def - stopped{$error/newerror false put}if - end - count Adobe_AGM_Core/AGMCORE_feature_opCount get sub dup 0 gt{{pop}repeat}{pop}ifelse - countdictstack Adobe_AGM_Core/AGMCORE_feature_dictCount get sub dup 0 gt{{end}repeat}{pop}ifelse - {Adobe_AGM_Core/AGMCORE_feature_ctm get setmatrix}if -}def -/set_negative -{ - //Adobe_AGM_Core begin - /AGMCORE_inverting exch def - level2{ - currentpagedevice/NegativePrint known AGMCORE_distilling not and{ - currentpagedevice/NegativePrint get//Adobe_AGM_Core/AGMCORE_inverting get ne{ - true begin_feature true{ - <>setpagedevice - }end_feature - }if - /AGMCORE_inverting false def - }if - }if - AGMCORE_inverting{ - [{1 exch sub}/exec load dup currenttransfer exch]cvx bind settransfer - AGMCORE_distilling{ - erasepage - }{ - gsave np clippath 1/setseparationgray where{pop setseparationgray}{setgray}ifelse - /AGMIRS_&fill where{pop AGMIRS_&fill}{fill}ifelse grestore - }ifelse - }if - end -}def -/lw_save_restore_override{ - /md where{ - pop - md begin - initializepage - /initializepage{}def - /pmSVsetup{}def - /endp{}def - /pse{}def - /psb{}def - /orig_showpage where - {pop} - {/orig_showpage/showpage load def} - ifelse - /showpage{orig_showpage gR}def - end - }if -}def -/pscript_showpage_override{ - /NTPSOct95 where - { - begin - showpage - save - /showpage/restore load def - /restore{exch pop}def - end - }if -}def -/driver_media_override -{ - /md where{ - pop - md/initializepage known{ - md/initializepage{}put - }if - md/rC known{ - md/rC{4{pop}repeat}put - }if - }if - /mysetup where{ - /mysetup[1 0 0 1 0 0]put - }if - Adobe_AGM_Core/AGMCORE_Default_CTM matrix currentmatrix put - level2 - {Adobe_AGM_Core/AGMCORE_Default_PageSize currentpagedevice/PageSize get put}if -}def -/driver_check_media_override -{ - /PrepsDict where - {pop} - { - Adobe_AGM_Core/AGMCORE_Default_CTM get matrix currentmatrix ne - Adobe_AGM_Core/AGMCORE_Default_PageSize get type/arraytype eq - { - Adobe_AGM_Core/AGMCORE_Default_PageSize get 0 get currentpagedevice/PageSize get 0 get eq and - Adobe_AGM_Core/AGMCORE_Default_PageSize get 1 get currentpagedevice/PageSize get 1 get eq and - }if - { - Adobe_AGM_Core/AGMCORE_Default_CTM get setmatrix - }if - }ifelse -}def -AGMCORE_err_strings begin - /AGMCORE_bad_environ(Environment not satisfactory for this job. Ensure that the PPD is correct or that the PostScript level requested is supported by this printer. )def - /AGMCORE_color_space_onhost_seps(This job contains colors that will not separate with on-host methods. )def - /AGMCORE_invalid_color_space(This job contains an invalid color space. )def -end -/set_def_ht -{AGMCORE_def_ht sethalftone}def -/set_def_flat -{AGMCORE_Default_flatness setflat}def -end -systemdict/setpacking known -{setpacking}if -%%EndResource -%%BeginResource: procset Adobe_CoolType_Core 2.31 0 %%Copyright: Copyright 1997-2006 Adobe Systems Incorporated. All Rights Reserved. %%Version: 2.31 0 10 dict begin /Adobe_CoolType_Passthru currentdict def /Adobe_CoolType_Core_Defined userdict/Adobe_CoolType_Core known def Adobe_CoolType_Core_Defined {/Adobe_CoolType_Core userdict/Adobe_CoolType_Core get def} if userdict/Adobe_CoolType_Core 70 dict dup begin put /Adobe_CoolType_Version 2.31 def /Level2? systemdict/languagelevel known dup {pop systemdict/languagelevel get 2 ge} if def Level2? not { /currentglobal false def /setglobal/pop load def /gcheck{pop false}bind def /currentpacking false def /setpacking/pop load def /SharedFontDirectory 0 dict def } if currentpacking true setpacking currentglobal false setglobal userdict/Adobe_CoolType_Data 2 copy known not {2 copy 10 dict put} if get begin /@opStackCountByLevel 32 dict def /@opStackLevel 0 def /@dictStackCountByLevel 32 dict def /@dictStackLevel 0 def end setglobal currentglobal true setglobal userdict/Adobe_CoolType_GVMFonts known not {userdict/Adobe_CoolType_GVMFonts 10 dict put} if setglobal currentglobal false setglobal userdict/Adobe_CoolType_LVMFonts known not {userdict/Adobe_CoolType_LVMFonts 10 dict put} if setglobal /ct_VMDictPut { dup gcheck{Adobe_CoolType_GVMFonts}{Adobe_CoolType_LVMFonts}ifelse 3 1 roll put }bind def /ct_VMDictUndef { dup Adobe_CoolType_GVMFonts exch known {Adobe_CoolType_GVMFonts exch undef} { dup Adobe_CoolType_LVMFonts exch known {Adobe_CoolType_LVMFonts exch undef} {pop} ifelse }ifelse }bind def /ct_str1 1 string def /ct_xshow { /_ct_na exch def /_ct_i 0 def currentpoint /_ct_y exch def /_ct_x exch def { pop pop ct_str1 exch 0 exch put ct_str1 show {_ct_na _ct_i get}stopped {pop pop} { _ct_x _ct_y moveto 0 rmoveto } ifelse /_ct_i _ct_i 1 add def currentpoint /_ct_y exch def /_ct_x exch def } exch @cshow }bind def /ct_yshow { /_ct_na exch def /_ct_i 0 def currentpoint /_ct_y exch def /_ct_x exch def { pop pop ct_str1 exch 0 exch put ct_str1 show {_ct_na _ct_i get}stopped {pop pop} { _ct_x _ct_y moveto 0 exch rmoveto } ifelse /_ct_i _ct_i 1 add def currentpoint /_ct_y exch def /_ct_x exch def } exch @cshow }bind def /ct_xyshow { /_ct_na exch def /_ct_i 0 def currentpoint /_ct_y exch def /_ct_x exch def { pop pop ct_str1 exch 0 exch put ct_str1 show {_ct_na _ct_i get}stopped {pop pop} { {_ct_na _ct_i 1 add get}stopped {pop pop pop} { _ct_x _ct_y moveto rmoveto } ifelse } ifelse /_ct_i _ct_i 2 add def currentpoint /_ct_y exch def /_ct_x exch def } exch @cshow }bind def /xsh{{@xshow}stopped{Adobe_CoolType_Data begin ct_xshow end}if}bind def /ysh{{@yshow}stopped{Adobe_CoolType_Data begin ct_yshow end}if}bind def /xysh{{@xyshow}stopped{Adobe_CoolType_Data begin ct_xyshow end}if}bind def currentglobal true setglobal /ct_T3Defs { /BuildChar { 1 index/Encoding get exch get 1 index/BuildGlyph get exec }bind def /BuildGlyph { exch begin GlyphProcs exch get exec end }bind def }bind def setglobal /@_SaveStackLevels { Adobe_CoolType_Data begin /@vmState currentglobal def false setglobal @opStackCountByLevel @opStackLevel 2 copy known not { 2 copy 3 dict dup/args 7 index 5 add array put put get } { get dup/args get dup length 3 index lt { dup length 5 add array exch 1 index exch 0 exch putinterval 1 index exch/args exch put } {pop} ifelse } ifelse begin count 1 sub 1 index lt {pop count} if dup/argCount exch def dup 0 gt { args exch 0 exch getinterval astore pop } {pop} ifelse count /restCount exch def end /@opStackLevel @opStackLevel 1 add def countdictstack 1 sub @dictStackCountByLevel exch @dictStackLevel exch put /@dictStackLevel @dictStackLevel 1 add def @vmState setglobal end }bind def /@_RestoreStackLevels { Adobe_CoolType_Data begin /@opStackLevel @opStackLevel 1 sub def @opStackCountByLevel @opStackLevel get begin count restCount sub dup 0 gt {{pop}repeat} {pop} ifelse args 0 argCount getinterval{}forall end /@dictStackLevel @dictStackLevel 1 sub def @dictStackCountByLevel @dictStackLevel get end countdictstack exch sub dup 0 gt {{end}repeat} {pop} ifelse }bind def /@_PopStackLevels { Adobe_CoolType_Data begin /@opStackLevel @opStackLevel 1 sub def /@dictStackLevel @dictStackLevel 1 sub def end }bind def /@Raise { exch cvx exch errordict exch get exec stop }bind def /@ReRaise { cvx $error/errorname get errordict exch get exec stop }bind def /@Stopped { 0 @#Stopped }bind def /@#Stopped { @_SaveStackLevels stopped {@_RestoreStackLevels true} {@_PopStackLevels false} ifelse }bind def /@Arg { Adobe_CoolType_Data begin @opStackCountByLevel @opStackLevel 1 sub get begin args exch argCount 1 sub exch sub get end end }bind def currentglobal true setglobal /CTHasResourceForAllBug Level2? { 1 dict dup /@shouldNotDisappearDictValue true def Adobe_CoolType_Data exch/@shouldNotDisappearDict exch put begin count @_SaveStackLevels {(*){pop stop}128 string/Category resourceforall} stopped pop @_RestoreStackLevels currentdict Adobe_CoolType_Data/@shouldNotDisappearDict get dup 3 1 roll ne dup 3 1 roll { /@shouldNotDisappearDictValue known { { end currentdict 1 index eq {pop exit} if } loop } if } { pop end } ifelse } {false} ifelse def true setglobal /CTHasResourceStatusBug Level2? { mark {/steveamerige/Category resourcestatus} stopped {cleartomark true} {cleartomark currentglobal not} ifelse } {false} ifelse def setglobal /CTResourceStatus { mark 3 1 roll /Category findresource begin ({ResourceStatus}stopped)0()/SubFileDecode filter cvx exec {cleartomark false} {{3 2 roll pop true}{cleartomark false}ifelse} ifelse end }bind def /CTWorkAroundBugs { Level2? { /cid_PreLoad/ProcSet resourcestatus { pop pop currentglobal mark { (*) { dup/CMap CTHasResourceStatusBug {CTResourceStatus} {resourcestatus} ifelse { pop dup 0 eq exch 1 eq or { dup/CMap findresource gcheck setglobal /CMap undefineresource } { pop CTHasResourceForAllBug {exit} {stop} ifelse } ifelse } {pop} ifelse } 128 string/CMap resourceforall } stopped {cleartomark} stopped pop setglobal } if } if }bind def /ds { Adobe_CoolType_Core begin CTWorkAroundBugs /mo/moveto load def /nf/newencodedfont load def /msf{makefont setfont}bind def /uf{dup undefinefont ct_VMDictUndef}bind def /ur/undefineresource load def /chp/charpath load def /awsh/awidthshow load def /wsh/widthshow load def /ash/ashow load def /@xshow/xshow load def /@yshow/yshow load def /@xyshow/xyshow load def /@cshow/cshow load def /sh/show load def /rp/repeat load def /.n/.notdef def end currentglobal false setglobal userdict/Adobe_CoolType_Data 2 copy known not {2 copy 10 dict put} if get begin /AddWidths? false def /CC 0 def /charcode 2 string def /@opStackCountByLevel 32 dict def /@opStackLevel 0 def /@dictStackCountByLevel 32 dict def /@dictStackLevel 0 def /InVMFontsByCMap 10 dict def /InVMDeepCopiedFonts 10 dict def end setglobal }bind def /dt { currentdict Adobe_CoolType_Core eq {end} if }bind def /ps { Adobe_CoolType_Core begin Adobe_CoolType_GVMFonts begin Adobe_CoolType_LVMFonts begin SharedFontDirectory begin }bind def /pt { end end end end }bind def /unload { systemdict/languagelevel known { systemdict/languagelevel get 2 ge { userdict/Adobe_CoolType_Core 2 copy known {undef} {pop pop} ifelse } if } if }bind def /ndf { 1 index where {pop pop pop} {dup xcheck{bind}if def} ifelse }def /findfont systemdict begin userdict begin /globaldict where{/globaldict get begin}if dup where pop exch get /globaldict where{pop end}if end end Adobe_CoolType_Core_Defined {/systemfindfont exch def} { /findfont 1 index def /systemfindfont exch def } ifelse /undefinefont {pop}ndf /copyfont { currentglobal 3 1 roll 1 index gcheck setglobal dup null eq{0}{dup length}ifelse 2 index length add 1 add dict begin exch { 1 index/FID eq {pop pop} {def} ifelse } forall dup null eq {pop} {{def}forall} ifelse currentdict end exch setglobal }bind def /copyarray { currentglobal exch dup gcheck setglobal dup length array copy exch setglobal }bind def /newencodedfont { currentglobal { SharedFontDirectory 3 index known {SharedFontDirectory 3 index get/FontReferenced known} {false} ifelse } { FontDirectory 3 index known {FontDirectory 3 index get/FontReferenced known} { SharedFontDirectory 3 index known {SharedFontDirectory 3 index get/FontReferenced known} {false} ifelse } ifelse } ifelse dup { 3 index findfont/FontReferenced get 2 index dup type/nametype eq {findfont} if ne {pop false} if } if dup { 1 index dup type/nametype eq {findfont} if dup/CharStrings known { /CharStrings get length 4 index findfont/CharStrings get length ne { pop false } if } {pop} ifelse } if { pop 1 index findfont /Encoding get exch 0 1 255 {2 copy get 3 index 3 1 roll put} for pop pop pop } { currentglobal 4 1 roll dup type/nametype eq {findfont} if dup gcheck setglobal dup dup maxlength 2 add dict begin exch { 1 index/FID ne 2 index/Encoding ne and {def} {pop pop} ifelse } forall /FontReferenced exch def /Encoding exch dup length array copy def /FontName 1 index dup type/stringtype eq{cvn}if def dup currentdict end definefont ct_VMDictPut setglobal } ifelse }bind def /SetSubstituteStrategy { $SubstituteFont begin dup type/dicttype ne {0 dict} if currentdict/$Strategies known { exch $Strategies exch 2 copy known { get 2 copy maxlength exch maxlength add dict begin {def}forall {def}forall currentdict dup/$Init known {dup/$Init get exec} if end /$Strategy exch def } {pop pop pop} ifelse } {pop pop} ifelse end }bind def /scff { $SubstituteFont begin dup type/stringtype eq {dup length exch} {null} ifelse /$sname exch def /$slen exch def /$inVMIndex $sname null eq { 1 index $str cvs dup length $slen sub $slen getinterval cvn } {$sname} ifelse def end {findfont} @Stopped { dup length 8 add string exch 1 index 0(BadFont:)putinterval 1 index exch 8 exch dup length string cvs putinterval cvn {findfont} @Stopped {pop/Courier findfont} if } if $SubstituteFont begin /$sname null def /$slen 0 def /$inVMIndex null def end }bind def /isWidthsOnlyFont { dup/WidthsOnly known {pop pop true} { dup/FDepVector known {/FDepVector get{isWidthsOnlyFont dup{exit}if}forall} { dup/FDArray known {/FDArray get{isWidthsOnlyFont dup{exit}if}forall} {pop} ifelse } ifelse } ifelse }bind def /ct_StyleDicts 4 dict dup begin /Adobe-Japan1 4 dict dup begin Level2? { /Serif /HeiseiMin-W3-83pv-RKSJ-H/Font resourcestatus {pop pop/HeiseiMin-W3} { /CIDFont/Category resourcestatus { pop pop /HeiseiMin-W3/CIDFont resourcestatus {pop pop/HeiseiMin-W3} {/Ryumin-Light} ifelse } {/Ryumin-Light} ifelse } ifelse def /SansSerif /HeiseiKakuGo-W5-83pv-RKSJ-H/Font resourcestatus {pop pop/HeiseiKakuGo-W5} { /CIDFont/Category resourcestatus { pop pop /HeiseiKakuGo-W5/CIDFont resourcestatus {pop pop/HeiseiKakuGo-W5} {/GothicBBB-Medium} ifelse } {/GothicBBB-Medium} ifelse } ifelse def /HeiseiMaruGo-W4-83pv-RKSJ-H/Font resourcestatus {pop pop/HeiseiMaruGo-W4} { /CIDFont/Category resourcestatus { pop pop /HeiseiMaruGo-W4/CIDFont resourcestatus {pop pop/HeiseiMaruGo-W4} { /Jun101-Light-RKSJ-H/Font resourcestatus {pop pop/Jun101-Light} {SansSerif} ifelse } ifelse } { /Jun101-Light-RKSJ-H/Font resourcestatus {pop pop/Jun101-Light} {SansSerif} ifelse } ifelse } ifelse /RoundSansSerif exch def /Default Serif def } { /Serif/Ryumin-Light def /SansSerif/GothicBBB-Medium def { (fonts/Jun101-Light-83pv-RKSJ-H)status }stopped {pop}{ {pop pop pop pop/Jun101-Light} {SansSerif} ifelse /RoundSansSerif exch def }ifelse /Default Serif def } ifelse end def /Adobe-Korea1 4 dict dup begin /Serif/HYSMyeongJo-Medium def /SansSerif/HYGoThic-Medium def /RoundSansSerif SansSerif def /Default Serif def end def /Adobe-GB1 4 dict dup begin /Serif/STSong-Light def /SansSerif/STHeiti-Regular def /RoundSansSerif SansSerif def /Default Serif def end def /Adobe-CNS1 4 dict dup begin /Serif/MKai-Medium def /SansSerif/MHei-Medium def /RoundSansSerif SansSerif def /Default Serif def end def end def Level2?{currentglobal true setglobal}if /ct_BoldRomanWidthProc { stringwidth 1 index 0 ne{exch .03 add exch}if setcharwidth 0 0 }bind def /ct_Type0WidthProc { dup stringwidth 0 0 moveto 2 index true charpath pathbbox 0 -1 7 index 2 div .88 setcachedevice2 pop 0 0 }bind def /ct_Type0WMode1WidthProc { dup stringwidth pop 2 div neg -0.88 2 copy moveto 0 -1 5 -1 roll true charpath pathbbox setcachedevice }bind def /cHexEncoding [/c00/c01/c02/c03/c04/c05/c06/c07/c08/c09/c0A/c0B/c0C/c0D/c0E/c0F/c10/c11/c12 /c13/c14/c15/c16/c17/c18/c19/c1A/c1B/c1C/c1D/c1E/c1F/c20/c21/c22/c23/c24/c25 /c26/c27/c28/c29/c2A/c2B/c2C/c2D/c2E/c2F/c30/c31/c32/c33/c34/c35/c36/c37/c38 /c39/c3A/c3B/c3C/c3D/c3E/c3F/c40/c41/c42/c43/c44/c45/c46/c47/c48/c49/c4A/c4B /c4C/c4D/c4E/c4F/c50/c51/c52/c53/c54/c55/c56/c57/c58/c59/c5A/c5B/c5C/c5D/c5E /c5F/c60/c61/c62/c63/c64/c65/c66/c67/c68/c69/c6A/c6B/c6C/c6D/c6E/c6F/c70/c71 /c72/c73/c74/c75/c76/c77/c78/c79/c7A/c7B/c7C/c7D/c7E/c7F/c80/c81/c82/c83/c84 /c85/c86/c87/c88/c89/c8A/c8B/c8C/c8D/c8E/c8F/c90/c91/c92/c93/c94/c95/c96/c97 /c98/c99/c9A/c9B/c9C/c9D/c9E/c9F/cA0/cA1/cA2/cA3/cA4/cA5/cA6/cA7/cA8/cA9/cAA /cAB/cAC/cAD/cAE/cAF/cB0/cB1/cB2/cB3/cB4/cB5/cB6/cB7/cB8/cB9/cBA/cBB/cBC/cBD /cBE/cBF/cC0/cC1/cC2/cC3/cC4/cC5/cC6/cC7/cC8/cC9/cCA/cCB/cCC/cCD/cCE/cCF/cD0 /cD1/cD2/cD3/cD4/cD5/cD6/cD7/cD8/cD9/cDA/cDB/cDC/cDD/cDE/cDF/cE0/cE1/cE2/cE3 /cE4/cE5/cE6/cE7/cE8/cE9/cEA/cEB/cEC/cED/cEE/cEF/cF0/cF1/cF2/cF3/cF4/cF5/cF6 /cF7/cF8/cF9/cFA/cFB/cFC/cFD/cFE/cFF]def /ct_BoldBaseFont 11 dict begin /FontType 3 def /FontMatrix[1 0 0 1 0 0]def /FontBBox[0 0 1 1]def /Encoding cHexEncoding def /_setwidthProc/ct_BoldRomanWidthProc load def /_bcstr1 1 string def /BuildChar { exch begin _basefont setfont _bcstr1 dup 0 4 -1 roll put dup _setwidthProc 3 copy moveto show _basefonto setfont moveto show end }bind def currentdict end def systemdict/composefont known { /ct_DefineIdentity-H { /Identity-H/CMap resourcestatus { pop pop } { /CIDInit/ProcSet findresource begin 12 dict begin begincmap /CIDSystemInfo 3 dict dup begin /Registry(Adobe)def /Ordering(Identity)def /Supplement 0 def end def /CMapName/Identity-H def /CMapVersion 1.000 def /CMapType 1 def 1 begincodespacerange <0000> endcodespacerange 1 begincidrange <0000>0 endcidrange endcmap CMapName currentdict/CMap defineresource pop end end } ifelse } def /ct_BoldBaseCIDFont 11 dict begin /CIDFontType 1 def /CIDFontName/ct_BoldBaseCIDFont def /FontMatrix[1 0 0 1 0 0]def /FontBBox[0 0 1 1]def /_setwidthProc/ct_Type0WidthProc load def /_bcstr2 2 string def /BuildGlyph { exch begin _basefont setfont _bcstr2 1 2 index 256 mod put _bcstr2 0 3 -1 roll 256 idiv put _bcstr2 dup _setwidthProc 3 copy moveto show _basefonto setfont moveto show end }bind def currentdict end def }if Level2?{setglobal}if /ct_CopyFont{ { 1 index/FID ne 2 index/UniqueID ne and {def}{pop pop}ifelse }forall }bind def /ct_Type0CopyFont { exch dup length dict begin ct_CopyFont [ exch FDepVector { dup/FontType get 0 eq { 1 index ct_Type0CopyFont /_ctType0 exch definefont } { /_ctBaseFont exch 2 index exec } ifelse exch } forall pop ] /FDepVector exch def currentdict end }bind def /ct_MakeBoldFont { dup/ct_SyntheticBold known { dup length 3 add dict begin ct_CopyFont /ct_StrokeWidth .03 0 FontMatrix idtransform pop def /ct_SyntheticBold true def currentdict end definefont } { dup dup length 3 add dict begin ct_CopyFont /PaintType 2 def /StrokeWidth .03 0 FontMatrix idtransform pop def /dummybold currentdict end definefont dup/FontType get dup 9 ge exch 11 le and { ct_BoldBaseCIDFont dup length 3 add dict copy begin dup/CIDSystemInfo get/CIDSystemInfo exch def ct_DefineIdentity-H /_Type0Identity/Identity-H 3 -1 roll[exch]composefont /_basefont exch def /_Type0Identity/Identity-H 3 -1 roll[exch]composefont /_basefonto exch def currentdict end /CIDFont defineresource } { ct_BoldBaseFont dup length 3 add dict copy begin /_basefont exch def /_basefonto exch def currentdict end definefont } ifelse } ifelse }bind def /ct_MakeBold{ 1 index 1 index findfont currentglobal 5 1 roll dup gcheck setglobal dup /FontType get 0 eq { dup/WMode known{dup/WMode get 1 eq}{false}ifelse version length 4 ge and {version 0 4 getinterval cvi 2015 ge} {true} ifelse {/ct_Type0WidthProc} {/ct_Type0WMode1WidthProc} ifelse ct_BoldBaseFont/_setwidthProc 3 -1 roll load put {ct_MakeBoldFont}ct_Type0CopyFont definefont } { dup/_fauxfont known not 1 index/SubstMaster known not and { ct_BoldBaseFont/_setwidthProc /ct_BoldRomanWidthProc load put ct_MakeBoldFont } { 2 index 2 index eq {exch pop } { dup length dict begin ct_CopyFont currentdict end definefont } ifelse } ifelse } ifelse pop pop pop setglobal }bind def /?str1 256 string def /?set { $SubstituteFont begin /$substituteFound false def /$fontname 1 index def /$doSmartSub false def end dup findfont $SubstituteFont begin $substituteFound {false} { dup/FontName known { dup/FontName get $fontname eq 1 index/DistillerFauxFont known not and /currentdistillerparams where {pop false 2 index isWidthsOnlyFont not and} if } {false} ifelse } ifelse exch pop /$doSmartSub true def end { 5 1 roll pop pop pop pop findfont } { 1 index findfont dup/FontType get 3 eq { 6 1 roll pop pop pop pop pop false } {pop true} ifelse { $SubstituteFont begin pop pop /$styleArray 1 index def /$regOrdering 2 index def pop pop 0 1 $styleArray length 1 sub { $styleArray exch get ct_StyleDicts $regOrdering 2 copy known { get exch 2 copy known not {pop/Default} if get dup type/nametype eq { ?str1 cvs length dup 1 add exch ?str1 exch(-)putinterval exch dup length exch ?str1 exch 3 index exch putinterval add ?str1 exch 0 exch getinterval cvn } { pop pop/Unknown } ifelse } { pop pop pop pop/Unknown } ifelse } for end findfont }if } ifelse currentglobal false setglobal 3 1 roll null copyfont definefont pop setglobal }bind def setpacking userdict/$SubstituteFont 25 dict put 1 dict begin /SubstituteFont dup $error exch 2 copy known {get} {pop pop{pop/Courier}bind} ifelse def /currentdistillerparams where dup { pop pop currentdistillerparams/CannotEmbedFontPolicy 2 copy known {get/Error eq} {pop pop false} ifelse } if not { countdictstack array dictstack 0 get begin userdict begin $SubstituteFont begin /$str 128 string def /$fontpat 128 string def /$slen 0 def /$sname null def /$match false def /$fontname null def /$substituteFound false def /$inVMIndex null def /$doSmartSub true def /$depth 0 def /$fontname null def /$italicangle 26.5 def /$dstack null def /$Strategies 10 dict dup begin /$Type3Underprint { currentglobal exch false setglobal 11 dict begin /UseFont exch $WMode 0 ne { dup length dict copy dup/WMode $WMode put /UseFont exch definefont } if def /FontName $fontname dup type/stringtype eq{cvn}if def /FontType 3 def /FontMatrix[.001 0 0 .001 0 0]def /Encoding 256 array dup 0 1 255{/.notdef put dup}for pop def /FontBBox[0 0 0 0]def /CCInfo 7 dict dup begin /cc null def /x 0 def /y 0 def end def /BuildChar { exch begin CCInfo begin 1 string dup 0 3 index put exch pop /cc exch def UseFont 1000 scalefont setfont cc stringwidth/y exch def/x exch def x y setcharwidth $SubstituteFont/$Strategy get/$Underprint get exec 0 0 moveto cc show x y moveto end end }bind def currentdict end exch setglobal }bind def /$GetaTint 2 dict dup begin /$BuildFont { dup/WMode known {dup/WMode get} {0} ifelse /$WMode exch def $fontname exch dup/FontName known { dup/FontName get dup type/stringtype eq{cvn}if } {/unnamedfont} ifelse exch Adobe_CoolType_Data/InVMDeepCopiedFonts get 1 index/FontName get known { pop Adobe_CoolType_Data/InVMDeepCopiedFonts get 1 index get null copyfont } {$deepcopyfont} ifelse exch 1 index exch/FontBasedOn exch put dup/FontName $fontname dup type/stringtype eq{cvn}if put definefont Adobe_CoolType_Data/InVMDeepCopiedFonts get begin dup/FontBasedOn get 1 index def end }bind def /$Underprint { gsave x abs y abs gt {/y 1000 def} {/x -1000 def 500 120 translate} ifelse Level2? { [/Separation(All)/DeviceCMYK{0 0 0 1 pop}] setcolorspace } {0 setgray} ifelse 10 setlinewidth x .8 mul [7 3] { y mul 8 div 120 sub x 10 div exch moveto 0 y 4 div neg rlineto dup 0 rlineto 0 y 4 div rlineto closepath gsave Level2? {.2 setcolor} {.8 setgray} ifelse fill grestore stroke } forall pop grestore }bind def end def /$Oblique 1 dict dup begin /$BuildFont { currentglobal exch dup gcheck setglobal null copyfont begin /FontBasedOn currentdict/FontName known { FontName dup type/stringtype eq{cvn}if } {/unnamedfont} ifelse def /FontName $fontname dup type/stringtype eq{cvn}if def /currentdistillerparams where {pop} { /FontInfo currentdict/FontInfo known {FontInfo null copyfont} {2 dict} ifelse dup begin /ItalicAngle $italicangle def /FontMatrix FontMatrix [1 0 ItalicAngle dup sin exch cos div 1 0 0] matrix concatmatrix readonly end 4 2 roll def def } ifelse FontName currentdict end definefont exch setglobal }bind def end def /$None 1 dict dup begin /$BuildFont{}bind def end def end def /$Oblique SetSubstituteStrategy /$findfontByEnum { dup type/stringtype eq{cvn}if dup/$fontname exch def $sname null eq {$str cvs dup length $slen sub $slen getinterval} {pop $sname} ifelse $fontpat dup 0(fonts/*)putinterval exch 7 exch putinterval /$match false def $SubstituteFont/$dstack countdictstack array dictstack put mark { $fontpat 0 $slen 7 add getinterval {/$match exch def exit} $str filenameforall } stopped { cleardictstack currentdict true $SubstituteFont/$dstack get { exch { 1 index eq {pop false} {true} ifelse } {begin false} ifelse } forall pop } if cleartomark /$slen 0 def $match false ne {$match(fonts/)anchorsearch pop pop cvn} {/Courier} ifelse }bind def /$ROS 1 dict dup begin /Adobe 4 dict dup begin /Japan1 [/Ryumin-Light/HeiseiMin-W3 /GothicBBB-Medium/HeiseiKakuGo-W5 /HeiseiMaruGo-W4/Jun101-Light]def /Korea1 [/HYSMyeongJo-Medium/HYGoThic-Medium]def /GB1 [/STSong-Light/STHeiti-Regular]def /CNS1 [/MKai-Medium/MHei-Medium]def end def end def /$cmapname null def /$deepcopyfont { dup/FontType get 0 eq { 1 dict dup/FontName/copied put copyfont begin /FDepVector FDepVector copyarray 0 1 2 index length 1 sub { 2 copy get $deepcopyfont dup/FontName/copied put /copied exch definefont 3 copy put pop pop } for def currentdict end } {$Strategies/$Type3Underprint get exec} ifelse }bind def /$buildfontname { dup/CIDFont findresource/CIDSystemInfo get begin Registry length Ordering length Supplement 8 string cvs 3 copy length 2 add add add string dup 5 1 roll dup 0 Registry putinterval dup 4 index(-)putinterval dup 4 index 1 add Ordering putinterval 4 2 roll add 1 add 2 copy(-)putinterval end 1 add 2 copy 0 exch getinterval $cmapname $fontpat cvs exch anchorsearch {pop pop 3 2 roll putinterval cvn/$cmapname exch def} {pop pop pop pop pop} ifelse length $str 1 index(-)putinterval 1 add $str 1 index $cmapname $fontpat cvs putinterval $cmapname length add $str exch 0 exch getinterval cvn }bind def /$findfontByROS { /$fontname exch def $ROS Registry 2 copy known { get Ordering 2 copy known {get} {pop pop[]} ifelse } {pop pop[]} ifelse false exch { dup/CIDFont resourcestatus { pop pop save 1 index/CIDFont findresource dup/WidthsOnly known {dup/WidthsOnly get} {false} ifelse exch pop exch restore {pop} {exch pop true exit} ifelse } {pop} ifelse } forall {$str cvs $buildfontname} { false(*) { save exch dup/CIDFont findresource dup/WidthsOnly known {dup/WidthsOnly get not} {true} ifelse exch/CIDSystemInfo get dup/Registry get Registry eq exch/Ordering get Ordering eq and and {exch restore exch pop true exit} {pop restore} ifelse } $str/CIDFont resourceforall {$buildfontname} {$fontname $findfontByEnum} ifelse } ifelse }bind def end end currentdict/$error known currentdict/languagelevel known and dup {pop $error/SubstituteFont known} if dup {$error} {Adobe_CoolType_Core} ifelse begin { /SubstituteFont /CMap/Category resourcestatus { pop pop { $SubstituteFont begin /$substituteFound true def dup length $slen gt $sname null ne or $slen 0 gt and { $sname null eq {dup $str cvs dup length $slen sub $slen getinterval cvn} {$sname} ifelse Adobe_CoolType_Data/InVMFontsByCMap get 1 index 2 copy known { get false exch { pop currentglobal { GlobalFontDirectory 1 index known {exch pop true exit} {pop} ifelse } { FontDirectory 1 index known {exch pop true exit} { GlobalFontDirectory 1 index known {exch pop true exit} {pop} ifelse } ifelse } ifelse } forall } {pop pop false} ifelse { exch pop exch pop } { dup/CMap resourcestatus { pop pop dup/$cmapname exch def /CMap findresource/CIDSystemInfo get{def}forall $findfontByROS } { 128 string cvs dup(-)search { 3 1 roll search { 3 1 roll pop {dup cvi} stopped {pop pop pop pop pop $findfontByEnum} { 4 2 roll pop pop exch length exch 2 index length 2 index sub exch 1 sub -1 0 { $str cvs dup length 4 index 0 4 index 4 3 roll add getinterval exch 1 index exch 3 index exch putinterval dup/CMap resourcestatus { pop pop 4 1 roll pop pop pop dup/$cmapname exch def /CMap findresource/CIDSystemInfo get{def}forall $findfontByROS true exit } {pop} ifelse } for dup type/booleantype eq {pop} {pop pop pop $findfontByEnum} ifelse } ifelse } {pop pop pop $findfontByEnum} ifelse } {pop pop $findfontByEnum} ifelse } ifelse } ifelse } {//SubstituteFont exec} ifelse /$slen 0 def end } } { { $SubstituteFont begin /$substituteFound true def dup length $slen gt $sname null ne or $slen 0 gt and {$findfontByEnum} {//SubstituteFont exec} ifelse end } } ifelse bind readonly def Adobe_CoolType_Core/scfindfont/systemfindfont load put } { /scfindfont { $SubstituteFont begin dup systemfindfont dup/FontName known {dup/FontName get dup 3 index ne} {/noname true} ifelse dup { /$origfontnamefound 2 index def /$origfontname 4 index def/$substituteFound true def } if exch pop { $slen 0 gt $sname null ne 3 index length $slen gt or and { pop dup $findfontByEnum findfont dup maxlength 1 add dict begin {1 index/FID eq{pop pop}{def}ifelse} forall currentdict end definefont dup/FontName known{dup/FontName get}{null}ifelse $origfontnamefound ne { $origfontname $str cvs print ( substitution revised, using )print dup/FontName known {dup/FontName get}{(unspecified font)} ifelse $str cvs print(.\n)print } if } {exch pop} ifelse } {exch pop} ifelse end }bind def } ifelse end end Adobe_CoolType_Core_Defined not { Adobe_CoolType_Core/findfont { $SubstituteFont begin $depth 0 eq { /$fontname 1 index dup type/stringtype ne{$str cvs}if def /$substituteFound false def } if /$depth $depth 1 add def end scfindfont $SubstituteFont begin /$depth $depth 1 sub def $substituteFound $depth 0 eq and { $inVMIndex null ne {dup $inVMIndex $AddInVMFont} if $doSmartSub { currentdict/$Strategy known {$Strategy/$BuildFont get exec} if } if } if end }bind put } if } if end /$AddInVMFont { exch/FontName 2 copy known { get 1 dict dup begin exch 1 index gcheck def end exch Adobe_CoolType_Data/InVMFontsByCMap get exch $DictAdd } {pop pop pop} ifelse }bind def /$DictAdd { 2 copy known not {2 copy 4 index length dict put} if Level2? not { 2 copy get dup maxlength exch length 4 index length add lt 2 copy get dup length 4 index length add exch maxlength 1 index lt { 2 mul dict begin 2 copy get{forall}def 2 copy currentdict put end } {pop} ifelse } if get begin {def} forall end }bind def end end %%EndResource currentglobal true setglobal %%BeginResource: procset Adobe_CoolType_Utility_MAKEOCF 1.23 0 %%Copyright: Copyright 1987-2006 Adobe Systems Incorporated. %%Version: 1.23 0 systemdict/languagelevel known dup {currentglobal false setglobal} {false} ifelse exch userdict/Adobe_CoolType_Utility 2 copy known {2 copy get dup maxlength 27 add dict copy} {27 dict} ifelse put Adobe_CoolType_Utility begin /@eexecStartData def /@recognizeCIDFont null def /ct_Level2? exch def /ct_Clone? 1183615869 internaldict dup /CCRun known not exch/eCCRun known not ct_Level2? and or def ct_Level2? {globaldict begin currentglobal true setglobal} if /ct_AddStdCIDMap ct_Level2? {{ mark Adobe_CoolType_Utility/@recognizeCIDFont currentdict put { ((Hex)57 StartData 0615 1e27 2c39 1c60 d8a8 cc31 fe2b f6e0 7aa3 e541 e21c 60d8 a8c9 c3d0 6d9e 1c60 d8a8 c9c2 02d7 9a1c 60d8 a849 1c60 d8a8 cc36 74f4 1144 b13b 77)0()/SubFileDecode filter cvx exec } stopped { cleartomark Adobe_CoolType_Utility/@recognizeCIDFont get countdictstack dup array dictstack exch 1 sub -1 0 { 2 copy get 3 index eq {1 index length exch sub 1 sub{end}repeat exit} {pop} ifelse } for pop pop Adobe_CoolType_Utility/@eexecStartData get eexec } {cleartomark} ifelse }} {{ Adobe_CoolType_Utility/@eexecStartData get eexec }} ifelse bind def userdict/cid_extensions known dup{cid_extensions/cid_UpdateDB known and}if { cid_extensions begin /cid_GetCIDSystemInfo { 1 index type/stringtype eq {exch cvn exch} if cid_extensions begin dup load 2 index known { 2 copy cid_GetStatusInfo dup null ne { 1 index load 3 index get dup null eq {pop pop cid_UpdateDB} { exch 1 index/Created get eq {exch pop exch pop} {pop cid_UpdateDB} ifelse } ifelse } {pop cid_UpdateDB} ifelse } {cid_UpdateDB} ifelse end }bind def end } if ct_Level2? {end setglobal} if /ct_UseNativeCapability? systemdict/composefont known def /ct_MakeOCF 35 dict def /ct_Vars 25 dict def /ct_GlyphDirProcs 6 dict def /ct_BuildCharDict 15 dict dup begin /charcode 2 string def /dst_string 1500 string def /nullstring()def /usewidths? true def end def ct_Level2?{setglobal}{pop}ifelse ct_GlyphDirProcs begin /GetGlyphDirectory { systemdict/languagelevel known {pop/CIDFont findresource/GlyphDirectory get} { 1 index/CIDFont findresource/GlyphDirectory get dup type/dicttype eq { dup dup maxlength exch length sub 2 index lt { dup length 2 index add dict copy 2 index /CIDFont findresource/GlyphDirectory 2 index put } if } if exch pop exch pop } ifelse + }def /+ { systemdict/languagelevel known { currentglobal false setglobal 3 dict begin /vm exch def } {1 dict begin} ifelse /$ exch def systemdict/languagelevel known { vm setglobal /gvm currentglobal def $ gcheck setglobal } if ?{$ begin}if }def /?{$ type/dicttype eq}def /|{ userdict/Adobe_CoolType_Data known { Adobe_CoolType_Data/AddWidths? known { currentdict Adobe_CoolType_Data begin begin AddWidths? { Adobe_CoolType_Data/CC 3 index put ?{def}{$ 3 1 roll put}ifelse CC charcode exch 1 index 0 2 index 256 idiv put 1 index exch 1 exch 256 mod put stringwidth 2 array astore currentfont/Widths get exch CC exch put } {?{def}{$ 3 1 roll put}ifelse} ifelse end end } {?{def}{$ 3 1 roll put}ifelse} ifelse } {?{def}{$ 3 1 roll put}ifelse} ifelse }def /! { ?{end}if systemdict/languagelevel known {gvm setglobal} if end }def /:{string currentfile exch readstring pop}executeonly def end ct_MakeOCF begin /ct_cHexEncoding [/c00/c01/c02/c03/c04/c05/c06/c07/c08/c09/c0A/c0B/c0C/c0D/c0E/c0F/c10/c11/c12 /c13/c14/c15/c16/c17/c18/c19/c1A/c1B/c1C/c1D/c1E/c1F/c20/c21/c22/c23/c24/c25 /c26/c27/c28/c29/c2A/c2B/c2C/c2D/c2E/c2F/c30/c31/c32/c33/c34/c35/c36/c37/c38 /c39/c3A/c3B/c3C/c3D/c3E/c3F/c40/c41/c42/c43/c44/c45/c46/c47/c48/c49/c4A/c4B /c4C/c4D/c4E/c4F/c50/c51/c52/c53/c54/c55/c56/c57/c58/c59/c5A/c5B/c5C/c5D/c5E /c5F/c60/c61/c62/c63/c64/c65/c66/c67/c68/c69/c6A/c6B/c6C/c6D/c6E/c6F/c70/c71 /c72/c73/c74/c75/c76/c77/c78/c79/c7A/c7B/c7C/c7D/c7E/c7F/c80/c81/c82/c83/c84 /c85/c86/c87/c88/c89/c8A/c8B/c8C/c8D/c8E/c8F/c90/c91/c92/c93/c94/c95/c96/c97 /c98/c99/c9A/c9B/c9C/c9D/c9E/c9F/cA0/cA1/cA2/cA3/cA4/cA5/cA6/cA7/cA8/cA9/cAA /cAB/cAC/cAD/cAE/cAF/cB0/cB1/cB2/cB3/cB4/cB5/cB6/cB7/cB8/cB9/cBA/cBB/cBC/cBD /cBE/cBF/cC0/cC1/cC2/cC3/cC4/cC5/cC6/cC7/cC8/cC9/cCA/cCB/cCC/cCD/cCE/cCF/cD0 /cD1/cD2/cD3/cD4/cD5/cD6/cD7/cD8/cD9/cDA/cDB/cDC/cDD/cDE/cDF/cE0/cE1/cE2/cE3 /cE4/cE5/cE6/cE7/cE8/cE9/cEA/cEB/cEC/cED/cEE/cEF/cF0/cF1/cF2/cF3/cF4/cF5/cF6 /cF7/cF8/cF9/cFA/cFB/cFC/cFD/cFE/cFF]def /ct_CID_STR_SIZE 8000 def /ct_mkocfStr100 100 string def /ct_defaultFontMtx[.001 0 0 .001 0 0]def /ct_1000Mtx[1000 0 0 1000 0 0]def /ct_raise{exch cvx exch errordict exch get exec stop}bind def /ct_reraise {cvx $error/errorname get(Error: )print dup( )cvs print errordict exch get exec stop }bind def /ct_cvnsi { 1 index add 1 sub 1 exch 0 4 1 roll { 2 index exch get exch 8 bitshift add } for exch pop }bind def /ct_GetInterval { Adobe_CoolType_Utility/ct_BuildCharDict get begin /dst_index 0 def dup dst_string length gt {dup string/dst_string exch def} if 1 index ct_CID_STR_SIZE idiv /arrayIndex exch def 2 index arrayIndex get 2 index arrayIndex ct_CID_STR_SIZE mul sub { dup 3 index add 2 index length le { 2 index getinterval dst_string dst_index 2 index putinterval length dst_index add/dst_index exch def exit } { 1 index length 1 index sub dup 4 1 roll getinterval dst_string dst_index 2 index putinterval pop dup dst_index add/dst_index exch def sub /arrayIndex arrayIndex 1 add def 2 index dup length arrayIndex gt {arrayIndex get} { pop exit } ifelse 0 } ifelse } loop pop pop pop dst_string 0 dst_index getinterval end }bind def ct_Level2? { /ct_resourcestatus currentglobal mark true setglobal {/unknowninstancename/Category resourcestatus} stopped {cleartomark setglobal true} {cleartomark currentglobal not exch setglobal} ifelse { { mark 3 1 roll/Category findresource begin ct_Vars/vm currentglobal put ({ResourceStatus}stopped)0()/SubFileDecode filter cvx exec {cleartomark false} {{3 2 roll pop true}{cleartomark false}ifelse} ifelse ct_Vars/vm get setglobal end } } {{resourcestatus}} ifelse bind def /CIDFont/Category ct_resourcestatus {pop pop} { currentglobal true setglobal /Generic/Category findresource dup length dict copy dup/InstanceType/dicttype put /CIDFont exch/Category defineresource pop setglobal } ifelse ct_UseNativeCapability? { /CIDInit/ProcSet findresource begin 12 dict begin begincmap /CIDSystemInfo 3 dict dup begin /Registry(Adobe)def /Ordering(Identity)def /Supplement 0 def end def /CMapName/Identity-H def /CMapVersion 1.000 def /CMapType 1 def 1 begincodespacerange <0000> endcodespacerange 1 begincidrange <0000>0 endcidrange endcmap CMapName currentdict/CMap defineresource pop end end } if } { /ct_Category 2 dict begin /CIDFont 10 dict def /ProcSet 2 dict def currentdict end def /defineresource { ct_Category 1 index 2 copy known { get dup dup maxlength exch length eq { dup length 10 add dict copy ct_Category 2 index 2 index put } if 3 index 3 index put pop exch pop } {pop pop/defineresource/undefined ct_raise} ifelse }bind def /findresource { ct_Category 1 index 2 copy known { get 2 index 2 copy known {get 3 1 roll pop pop} {pop pop/findresource/undefinedresource ct_raise} ifelse } {pop pop/findresource/undefined ct_raise} ifelse }bind def /resourcestatus { ct_Category 1 index 2 copy known { get 2 index known exch pop exch pop { 0 -1 true } { false } ifelse } {pop pop/findresource/undefined ct_raise} ifelse }bind def /ct_resourcestatus/resourcestatus load def } ifelse /ct_CIDInit 2 dict begin /ct_cidfont_stream_init { { dup(Binary)eq { pop null currentfile ct_Level2? { {cid_BYTE_COUNT()/SubFileDecode filter} stopped {pop pop pop} if } if /readstring load exit } if dup(Hex)eq { pop currentfile ct_Level2? { {null exch/ASCIIHexDecode filter/readstring} stopped {pop exch pop(>)exch/readhexstring} if } {(>)exch/readhexstring} ifelse load exit } if /StartData/typecheck ct_raise } loop cid_BYTE_COUNT ct_CID_STR_SIZE le { 2 copy cid_BYTE_COUNT string exch exec pop 1 array dup 3 -1 roll 0 exch put } { cid_BYTE_COUNT ct_CID_STR_SIZE div ceiling cvi dup array exch 2 sub 0 exch 1 exch { 2 copy 5 index ct_CID_STR_SIZE string 6 index exec pop put pop } for 2 index cid_BYTE_COUNT ct_CID_STR_SIZE mod string 3 index exec pop 1 index exch 1 index length 1 sub exch put } ifelse cid_CIDFONT exch/GlyphData exch put 2 index null eq { pop pop pop } { pop/readstring load 1 string exch { 3 copy exec pop dup length 0 eq { pop pop pop pop pop true exit } if 4 index eq { pop pop pop pop false exit } if } loop pop } ifelse }bind def /StartData { mark { currentdict dup/FDArray get 0 get/FontMatrix get 0 get 0.001 eq { dup/CDevProc known not { /CDevProc 1183615869 internaldict/stdCDevProc 2 copy known {get} { pop pop {pop pop pop pop pop 0 -1000 7 index 2 div 880} } ifelse def } if } { /CDevProc { pop pop pop pop pop 0 1 cid_temp/cid_CIDFONT get /FDArray get 0 get /FontMatrix get 0 get div 7 index 2 div 1 index 0.88 mul }def } ifelse /cid_temp 15 dict def cid_temp begin /cid_CIDFONT exch def 3 copy pop dup/cid_BYTE_COUNT exch def 0 gt { ct_cidfont_stream_init FDArray { /Private get dup/SubrMapOffset known { begin /Subrs SubrCount array def Subrs SubrMapOffset SubrCount SDBytes ct_Level2? { currentdict dup/SubrMapOffset undef dup/SubrCount undef /SDBytes undef } if end /cid_SD_BYTES exch def /cid_SUBR_COUNT exch def /cid_SUBR_MAP_OFFSET exch def /cid_SUBRS exch def cid_SUBR_COUNT 0 gt { GlyphData cid_SUBR_MAP_OFFSET cid_SD_BYTES ct_GetInterval 0 cid_SD_BYTES ct_cvnsi 0 1 cid_SUBR_COUNT 1 sub { exch 1 index 1 add cid_SD_BYTES mul cid_SUBR_MAP_OFFSET add GlyphData exch cid_SD_BYTES ct_GetInterval 0 cid_SD_BYTES ct_cvnsi cid_SUBRS 4 2 roll GlyphData exch 4 index 1 index sub ct_GetInterval dup length string copy put } for pop } if } {pop} ifelse } forall } if cleartomark pop pop end CIDFontName currentdict/CIDFont defineresource pop end end } stopped {cleartomark/StartData ct_reraise} if }bind def currentdict end def /ct_saveCIDInit { /CIDInit/ProcSet ct_resourcestatus {true} {/CIDInitC/ProcSet ct_resourcestatus} ifelse { pop pop /CIDInit/ProcSet findresource ct_UseNativeCapability? {pop null} {/CIDInit ct_CIDInit/ProcSet defineresource pop} ifelse } {/CIDInit ct_CIDInit/ProcSet defineresource pop null} ifelse ct_Vars exch/ct_oldCIDInit exch put }bind def /ct_restoreCIDInit { ct_Vars/ct_oldCIDInit get dup null ne {/CIDInit exch/ProcSet defineresource pop} {pop} ifelse }bind def /ct_BuildCharSetUp { 1 index begin CIDFont begin Adobe_CoolType_Utility/ct_BuildCharDict get begin /ct_dfCharCode exch def /ct_dfDict exch def CIDFirstByte ct_dfCharCode add dup CIDCount ge {pop 0} if /cid exch def { GlyphDirectory cid 2 copy known {get} {pop pop nullstring} ifelse dup length FDBytes sub 0 gt { dup FDBytes 0 ne {0 FDBytes ct_cvnsi} {pop 0} ifelse /fdIndex exch def dup length FDBytes sub FDBytes exch getinterval /charstring exch def exit } { pop cid 0 eq {/charstring nullstring def exit} if /cid 0 def } ifelse } loop }def /ct_SetCacheDevice { 0 0 moveto dup stringwidth 3 -1 roll true charpath pathbbox 0 -1000 7 index 2 div 880 setcachedevice2 0 0 moveto }def /ct_CloneSetCacheProc { 1 eq { stringwidth pop -2 div -880 0 -1000 setcharwidth moveto } { usewidths? { currentfont/Widths get cid 2 copy known {get exch pop aload pop} {pop pop stringwidth} ifelse } {stringwidth} ifelse setcharwidth 0 0 moveto } ifelse }def /ct_Type3ShowCharString { ct_FDDict fdIndex 2 copy known {get} { currentglobal 3 1 roll 1 index gcheck setglobal ct_Type1FontTemplate dup maxlength dict copy begin FDArray fdIndex get dup/FontMatrix 2 copy known {get} {pop pop ct_defaultFontMtx} ifelse /FontMatrix exch dup length array copy def /Private get /Private exch def /Widths rootfont/Widths get def /CharStrings 1 dict dup/.notdef dup length string copy put def currentdict end /ct_Type1Font exch definefont dup 5 1 roll put setglobal } ifelse dup/CharStrings get 1 index/Encoding get ct_dfCharCode get charstring put rootfont/WMode 2 copy known {get} {pop pop 0} ifelse exch 1000 scalefont setfont ct_str1 0 ct_dfCharCode put ct_str1 exch ct_dfSetCacheProc ct_SyntheticBold { currentpoint ct_str1 show newpath moveto ct_str1 true charpath ct_StrokeWidth setlinewidth stroke } {ct_str1 show} ifelse }def /ct_Type4ShowCharString { ct_dfDict ct_dfCharCode charstring FDArray fdIndex get dup/FontMatrix get dup ct_defaultFontMtx ct_matrixeq not {ct_1000Mtx matrix concatmatrix concat} {pop} ifelse /Private get Adobe_CoolType_Utility/ct_Level2? get not { ct_dfDict/Private 3 -1 roll {put} 1183615869 internaldict/superexec get exec } if 1183615869 internaldict Adobe_CoolType_Utility/ct_Level2? get {1 index} {3 index/Private get mark 6 1 roll} ifelse dup/RunInt known {/RunInt get} {pop/CCRun} ifelse get exec Adobe_CoolType_Utility/ct_Level2? get not {cleartomark} if }bind def /ct_BuildCharIncremental { { Adobe_CoolType_Utility/ct_MakeOCF get begin ct_BuildCharSetUp ct_ShowCharString } stopped {stop} if end end end end }bind def /BaseFontNameStr(BF00)def /ct_Type1FontTemplate 14 dict begin /FontType 1 def /FontMatrix [0.001 0 0 0.001 0 0]def /FontBBox [-250 -250 1250 1250]def /Encoding ct_cHexEncoding def /PaintType 0 def currentdict end def /BaseFontTemplate 11 dict begin /FontMatrix [0.001 0 0 0.001 0 0]def /FontBBox [-250 -250 1250 1250]def /Encoding ct_cHexEncoding def /BuildChar/ct_BuildCharIncremental load def ct_Clone? { /FontType 3 def /ct_ShowCharString/ct_Type3ShowCharString load def /ct_dfSetCacheProc/ct_CloneSetCacheProc load def /ct_SyntheticBold false def /ct_StrokeWidth 1 def } { /FontType 4 def /Private 1 dict dup/lenIV 4 put def /CharStrings 1 dict dup/.notdefput def /PaintType 0 def /ct_ShowCharString/ct_Type4ShowCharString load def } ifelse /ct_str1 1 string def currentdict end def /BaseFontDictSize BaseFontTemplate length 5 add def /ct_matrixeq { true 0 1 5 { dup 4 index exch get exch 3 index exch get eq and dup not {exit} if } for exch pop exch pop }bind def /ct_makeocf { 15 dict begin exch/WMode exch def exch/FontName exch def /FontType 0 def /FMapType 2 def dup/FontMatrix known {dup/FontMatrix get/FontMatrix exch def} {/FontMatrix matrix def} ifelse /bfCount 1 index/CIDCount get 256 idiv 1 add dup 256 gt{pop 256}if def /Encoding 256 array 0 1 bfCount 1 sub{2 copy dup put pop}for bfCount 1 255{2 copy bfCount put pop}for def /FDepVector bfCount dup 256 lt{1 add}if array def BaseFontTemplate BaseFontDictSize dict copy begin /CIDFont exch def CIDFont/FontBBox known {CIDFont/FontBBox get/FontBBox exch def} if CIDFont/CDevProc known {CIDFont/CDevProc get/CDevProc exch def} if currentdict end BaseFontNameStr 3(0)putinterval 0 1 bfCount dup 256 eq{1 sub}if { FDepVector exch 2 index BaseFontDictSize dict copy begin dup/CIDFirstByte exch 256 mul def FontType 3 eq {/ct_FDDict 2 dict def} if currentdict end 1 index 16 BaseFontNameStr 2 2 getinterval cvrs pop BaseFontNameStr exch definefont put } for ct_Clone? {/Widths 1 index/CIDFont get/GlyphDirectory get length dict def} if FontName currentdict end definefont ct_Clone? { gsave dup 1000 scalefont setfont ct_BuildCharDict begin /usewidths? false def currentfont/Widths get begin exch/CIDFont get/GlyphDirectory get { pop dup charcode exch 1 index 0 2 index 256 idiv put 1 index exch 1 exch 256 mod put stringwidth 2 array astore def } forall end /usewidths? true def end grestore } {exch pop} ifelse }bind def currentglobal true setglobal /ct_ComposeFont { ct_UseNativeCapability? { 2 index/CMap ct_resourcestatus {pop pop exch pop} { /CIDInit/ProcSet findresource begin 12 dict begin begincmap /CMapName 3 index def /CMapVersion 1.000 def /CMapType 1 def exch/WMode exch def /CIDSystemInfo 3 dict dup begin /Registry(Adobe)def /Ordering CMapName ct_mkocfStr100 cvs (Adobe-)search { pop pop (-)search { dup length string copy exch pop exch pop } {pop(Identity)} ifelse } {pop (Identity)} ifelse def /Supplement 0 def end def 1 begincodespacerange <0000> endcodespacerange 1 begincidrange <0000>0 endcidrange endcmap CMapName currentdict/CMap defineresource pop end end } ifelse composefont } { 3 2 roll pop 0 get/CIDFont findresource ct_makeocf } ifelse }bind def setglobal /ct_MakeIdentity { ct_UseNativeCapability? { 1 index/CMap ct_resourcestatus {pop pop} { /CIDInit/ProcSet findresource begin 12 dict begin begincmap /CMapName 2 index def /CMapVersion 1.000 def /CMapType 1 def /CIDSystemInfo 3 dict dup begin /Registry(Adobe)def /Ordering CMapName ct_mkocfStr100 cvs (Adobe-)search { pop pop (-)search {dup length string copy exch pop exch pop} {pop(Identity)} ifelse } {pop(Identity)} ifelse def /Supplement 0 def end def 1 begincodespacerange <0000> endcodespacerange 1 begincidrange <0000>0 endcidrange endcmap CMapName currentdict/CMap defineresource pop end end } ifelse composefont } { exch pop 0 get/CIDFont findresource ct_makeocf } ifelse }bind def currentdict readonly pop end end %%EndResource setglobal %%BeginResource: procset Adobe_CoolType_Utility_T42 1.0 0 %%Copyright: Copyright 1987-2004 Adobe Systems Incorporated. %%Version: 1.0 0 userdict/ct_T42Dict 15 dict put ct_T42Dict begin /Is2015? { version cvi 2015 ge }bind def /AllocGlyphStorage { Is2015? { pop } { {string}forall }ifelse }bind def /Type42DictBegin { 25 dict begin /FontName exch def /CharStrings 256 dict begin /.notdef 0 def currentdict end def /Encoding exch def /PaintType 0 def /FontType 42 def /FontMatrix[1 0 0 1 0 0]def 4 array astore cvx/FontBBox exch def /sfnts }bind def /Type42DictEnd { currentdict dup/FontName get exch definefont end ct_T42Dict exch dup/FontName get exch put }bind def /RD{string currentfile exch readstring pop}executeonly def /PrepFor2015 { Is2015? { /GlyphDirectory 16 dict def sfnts 0 get dup 2 index (glyx) putinterval 2 index (locx) putinterval pop pop } { pop pop }ifelse }bind def /AddT42Char { Is2015? { /GlyphDirectory get begin def end pop pop } { /sfnts get 4 index get 3 index 2 index putinterval pop pop pop pop }ifelse }bind def /T0AddT42Mtx2 { /CIDFont findresource/Metrics2 get begin def end }bind def end %%EndResource currentglobal true setglobal %%BeginFile: MMFauxFont.prc %%Copyright: Copyright 1987-2001 Adobe Systems Incorporated. %%All Rights Reserved. userdict /ct_EuroDict 10 dict put ct_EuroDict begin /ct_CopyFont { { 1 index /FID ne {def} {pop pop} ifelse} forall } def /ct_GetGlyphOutline { gsave initmatrix newpath exch findfont dup length 1 add dict begin ct_CopyFont /Encoding Encoding dup length array copy dup 4 -1 roll 0 exch put def currentdict end /ct_EuroFont exch definefont 1000 scalefont setfont 0 0 moveto [ <00> stringwidth <00> false charpath pathbbox [ {/m cvx} {/l cvx} {/c cvx} {/cp cvx} pathforall grestore counttomark 8 add } def /ct_MakeGlyphProc { ] cvx /ct_PSBuildGlyph cvx ] cvx } def /ct_PSBuildGlyph { gsave 8 -1 roll pop 7 1 roll 6 -2 roll ct_FontMatrix transform 6 2 roll 4 -2 roll ct_FontMatrix transform 4 2 roll ct_FontMatrix transform currentdict /PaintType 2 copy known {get 2 eq}{pop pop false} ifelse dup 9 1 roll { currentdict /StrokeWidth 2 copy known { get 2 div 0 ct_FontMatrix dtransform pop 5 1 roll 4 -1 roll 4 index sub 4 1 roll 3 -1 roll 4 index sub 3 1 roll exch 4 index add exch 4 index add 5 -1 roll pop } { pop pop } ifelse } if setcachedevice ct_FontMatrix concat ct_PSPathOps begin exec end { currentdict /StrokeWidth 2 copy known { get } { pop pop 0 } ifelse setlinewidth stroke } { fill } ifelse grestore } def /ct_PSPathOps 4 dict dup begin /m {moveto} def /l {lineto} def /c {curveto} def /cp {closepath} def end def /ct_matrix1000 [1000 0 0 1000 0 0] def /ct_AddGlyphProc { 2 index findfont dup length 4 add dict begin ct_CopyFont /CharStrings CharStrings dup length 1 add dict copy begin 3 1 roll def currentdict end def /ct_FontMatrix ct_matrix1000 FontMatrix matrix concatmatrix def /ct_PSBuildGlyph /ct_PSBuildGlyph load def /ct_PSPathOps /ct_PSPathOps load def currentdict end definefont pop } def systemdict /languagelevel known { /ct_AddGlyphToPrinterFont { 2 copy ct_GetGlyphOutline 3 add -1 roll restore ct_MakeGlyphProc ct_AddGlyphProc } def } { /ct_AddGlyphToPrinterFont { pop pop restore Adobe_CTFauxDict /$$$FONTNAME get /Euro Adobe_CTFauxDict /$$$SUBSTITUTEBASE get ct_EuroDict exch get ct_AddGlyphProc } def } ifelse /AdobeSansMM { 556 0 24 -19 541 703 { 541 628 m 510 669 442 703 354 703 c 201 703 117 607 101 444 c 50 444 l 25 372 l 97 372 l 97 301 l 49 301 l 24 229 l 103 229 l 124 67 209 -19 350 -19 c 435 -19 501 25 509 32 c 509 131 l 492 105 417 60 343 60 c 267 60 204 127 197 229 c 406 229 l 430 301 l 191 301 l 191 372 l 455 372 l 479 444 l 194 444 l 201 531 245 624 348 624 c 433 624 484 583 509 534 c cp 556 0 m } ct_PSBuildGlyph } def /AdobeSerifMM { 500 0 10 -12 484 692 { 347 298 m 171 298 l 170 310 170 322 170 335 c 170 362 l 362 362 l 374 403 l 172 403 l 184 580 244 642 308 642 c 380 642 434 574 457 457 c 481 462 l 474 691 l 449 691 l 433 670 429 657 410 657 c 394 657 360 692 299 692 c 204 692 94 604 73 403 c 22 403 l 10 362 l 70 362 l 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All Rights Reserved. -systemdict/setpacking known -{ - currentpacking - true setpacking -}if -userdict/Adobe_AGM_Image 71 dict dup begin put -/Adobe_AGM_Image_Id/Adobe_AGM_Image_1.0_0 def -/nd{ - null def -}bind def -/AGMIMG_&image nd -/AGMIMG_&colorimage nd -/AGMIMG_&imagemask nd -/AGMIMG_mbuf()def -/AGMIMG_ybuf()def -/AGMIMG_kbuf()def -/AGMIMG_c 0 def -/AGMIMG_m 0 def -/AGMIMG_y 0 def -/AGMIMG_k 0 def -/AGMIMG_tmp nd -/AGMIMG_imagestring0 nd -/AGMIMG_imagestring1 nd -/AGMIMG_imagestring2 nd -/AGMIMG_imagestring3 nd -/AGMIMG_imagestring4 nd -/AGMIMG_imagestring5 nd -/AGMIMG_cnt nd -/AGMIMG_fsave nd -/AGMIMG_colorAry nd -/AGMIMG_override nd -/AGMIMG_name nd -/AGMIMG_maskSource nd -/AGMIMG_flushfilters nd -/invert_image_samples nd -/knockout_image_samples nd -/img nd -/sepimg nd -/devnimg nd -/idximg nd -/ds -{ - Adobe_AGM_Core begin - Adobe_AGM_Image begin - /AGMIMG_&image systemdict/image get def - /AGMIMG_&imagemask systemdict/imagemask get def - /colorimage where{ - pop - /AGMIMG_&colorimage/colorimage ldf - }if - end - end -}def -/ps -{ - Adobe_AGM_Image begin - /AGMIMG_ccimage_exists{/customcolorimage where - { - pop - /Adobe_AGM_OnHost_Seps where - { - pop false - }{ - /Adobe_AGM_InRip_Seps where - { - pop false - }{ - true - }ifelse - }ifelse - }{ - false - }ifelse - }bdf - level2{ - /invert_image_samples - { - Adobe_AGM_Image/AGMIMG_tmp Decode length ddf - /Decode[Decode 1 get Decode 0 get]def - }def - /knockout_image_samples - { - Operator/imagemask ne{ - /Decode[1 1]def - }if - }def - }{ - /invert_image_samples - { - {1 exch sub}currenttransfer addprocs settransfer - }def - /knockout_image_samples - { - {pop 1}currenttransfer addprocs settransfer - }def - }ifelse - /img/imageormask ldf - /sepimg/sep_imageormask ldf - /devnimg/devn_imageormask ldf - /idximg/indexed_imageormask ldf - /_ctype 7 def - currentdict{ - dup xcheck 1 index type dup/arraytype eq exch/packedarraytype eq or and{ - bind - }if - def - }forall -}def -/pt -{ - end -}def -/dt -{ -}def -/AGMIMG_flushfilters -{ - dup type/arraytype ne - {1 array astore}if - dup 0 get currentfile ne - {dup 0 get flushfile}if - { - dup type/filetype eq - { - dup status 1 index currentfile ne and - {closefile} - {pop} - ifelse - }{pop}ifelse - }forall -}def -/AGMIMG_init_common -{ - currentdict/T known{/ImageType/T ldf currentdict/T undef}if - currentdict/W known{/Width/W ldf currentdict/W undef}if - currentdict/H known{/Height/H ldf currentdict/H undef}if - currentdict/M known{/ImageMatrix/M ldf currentdict/M undef}if - currentdict/BC known{/BitsPerComponent/BC ldf currentdict/BC undef}if - currentdict/D known{/Decode/D ldf currentdict/D undef}if - currentdict/DS known{/DataSource/DS ldf currentdict/DS undef}if - currentdict/O known{ - /Operator/O load 1 eq{ - /imagemask - }{ - /O load 2 eq{ - /image - }{ - /colorimage - }ifelse - }ifelse - def - currentdict/O undef - }if - currentdict/HSCI known{/HostSepColorImage/HSCI ldf currentdict/HSCI undef}if - currentdict/MD known{/MultipleDataSources/MD ldf currentdict/MD undef}if - currentdict/I known{/Interpolate/I ldf currentdict/I undef}if - currentdict/SI known{/SkipImageProc/SI ldf currentdict/SI undef}if - /DataSource load xcheck not{ - DataSource type/arraytype eq{ - DataSource 0 get type/filetype eq{ - /_Filters DataSource def - currentdict/MultipleDataSources known not{ - /DataSource DataSource dup length 1 sub get def - }if - }if - }if - currentdict/MultipleDataSources known not{ - /MultipleDataSources DataSource type/arraytype eq{ - DataSource length 1 gt - } - {false}ifelse def - }if - }if - /NComponents Decode length 2 div def - currentdict/SkipImageProc known not{/SkipImageProc{false}def}if -}bdf -/imageormask_sys -{ - begin - AGMIMG_init_common - save mark - level2{ - currentdict - Operator/imagemask eq{ - AGMIMG_&imagemask - }{ - use_mask{ - process_mask AGMIMG_&image - }{ - AGMIMG_&image - }ifelse - }ifelse - }{ - Width Height - Operator/imagemask eq{ - Decode 0 get 1 eq Decode 1 get 0 eq and - ImageMatrix/DataSource load - AGMIMG_&imagemask - }{ - BitsPerComponent ImageMatrix/DataSource load - AGMIMG_&image - }ifelse - }ifelse - currentdict/_Filters known{_Filters AGMIMG_flushfilters}if - cleartomark restore - end -}def -/overprint_plate -{ - currentoverprint{ - 0 get dup type/nametype eq{ - dup/DeviceGray eq{ - pop AGMCORE_black_plate not - }{ - /DeviceCMYK eq{ - AGMCORE_is_cmyk_sep not - }if - }ifelse - }{ - false exch - { - AGMOHS_sepink eq or - }forall - not - }ifelse - }{ - pop false - }ifelse -}def -/process_mask -{ - level3{ - dup begin - /ImageType 1 def - end - 4 dict begin - /DataDict exch def - /ImageType 3 def - /InterleaveType 3 def - /MaskDict 9 dict begin - /ImageType 1 def - /Width DataDict dup/MaskWidth known{/MaskWidth}{/Width}ifelse get def - /Height DataDict dup/MaskHeight known{/MaskHeight}{/Height}ifelse get def - /ImageMatrix[Width 0 0 Height neg 0 Height]def - /NComponents 1 def - /BitsPerComponent 1 def - /Decode DataDict dup/MaskD known{/MaskD}{[1 0]}ifelse get def - /DataSource Adobe_AGM_Core/AGMIMG_maskSource get def - currentdict end def - currentdict end - }if -}def -/use_mask -{ - dup/Mask known {dup/Mask get}{false}ifelse -}def -/imageormask -{ - begin - AGMIMG_init_common - SkipImageProc{ - currentdict consumeimagedata - } - { - save mark - level2 AGMCORE_host_sep not and{ - currentdict - Operator/imagemask eq DeviceN_PS2 not and{ - imagemask - }{ - AGMCORE_in_rip_sep currentoverprint and currentcolorspace 0 get/DeviceGray eq and{ - [/Separation/Black/DeviceGray{}]setcolorspace - /Decode[Decode 1 get Decode 0 get]def - }if - use_mask{ - process_mask image - }{ - DeviceN_NoneName DeviceN_PS2 Indexed_DeviceN level3 not and or or AGMCORE_in_rip_sep and - { - Names convert_to_process not{ - 2 dict begin - /imageDict xdf - /names_index 0 def - gsave - imageDict write_image_file{ - Names{ - dup(None)ne{ - [/Separation 3 -1 roll/DeviceGray{1 exch sub}]setcolorspace - Operator imageDict read_image_file - names_index 0 eq{true setoverprint}if - /names_index names_index 1 add def - }{ - pop - }ifelse - }forall - close_image_file - }if - grestore - end - }{ - Operator/imagemask eq{ - imagemask - }{ - image - }ifelse - }ifelse - }{ - Operator/imagemask eq{ - imagemask - }{ - image - }ifelse - }ifelse - }ifelse - }ifelse - }{ - Width Height - Operator/imagemask eq{ - Decode 0 get 1 eq Decode 1 get 0 eq and - ImageMatrix/DataSource load - /Adobe_AGM_OnHost_Seps where{ - pop imagemask - }{ - currentgray 1 ne{ - currentdict imageormask_sys - }{ - currentoverprint not{ - 1 AGMCORE_&setgray - currentdict imageormask_sys - }{ - currentdict ignoreimagedata - }ifelse - }ifelse - }ifelse - }{ - BitsPerComponent ImageMatrix - MultipleDataSources{ - 0 1 NComponents 1 sub{ - DataSource exch get - }for - }{ - /DataSource load - }ifelse - Operator/colorimage eq{ - AGMCORE_host_sep{ - MultipleDataSources level2 or NComponents 4 eq and{ - AGMCORE_is_cmyk_sep{ - MultipleDataSources{ - /DataSource DataSource 0 get xcheck - { - [ - DataSource 0 get/exec cvx - DataSource 1 get/exec cvx - DataSource 2 get/exec cvx - DataSource 3 get/exec cvx - /AGMCORE_get_ink_data cvx - ]cvx - }{ - DataSource aload pop AGMCORE_get_ink_data - }ifelse def - }{ - /DataSource - Width BitsPerComponent mul 7 add 8 idiv Height mul 4 mul - /DataSource load - filter_cmyk 0()/SubFileDecode filter def - }ifelse - /Decode[Decode 0 get Decode 1 get]def - /MultipleDataSources false def - /NComponents 1 def - /Operator/image def - invert_image_samples - 1 AGMCORE_&setgray - currentdict imageormask_sys - }{ - currentoverprint not Operator/imagemask eq and{ - 1 AGMCORE_&setgray - currentdict imageormask_sys - }{ - currentdict ignoreimagedata - }ifelse - }ifelse - }{ - MultipleDataSources NComponents AGMIMG_&colorimage - }ifelse - }{ - true NComponents colorimage - }ifelse - }{ - Operator/image eq{ - AGMCORE_host_sep{ - /DoImage true def - currentdict/HostSepColorImage known{HostSepColorImage not}{false}ifelse - { - AGMCORE_black_plate not Operator/imagemask ne and{ - /DoImage false def - currentdict ignoreimagedata - }if - }if - 1 AGMCORE_&setgray - DoImage - {currentdict imageormask_sys}if - }{ - use_mask{ - process_mask image - }{ - image - }ifelse - }ifelse - }{ - Operator/knockout eq{ - pop pop pop pop pop - currentcolorspace overprint_plate not{ - knockout_unitsq - }if - }if - }ifelse - }ifelse - }ifelse - }ifelse - cleartomark restore - }ifelse - currentdict/_Filters known{_Filters AGMIMG_flushfilters}if - end -}def -/sep_imageormask -{ - /sep_colorspace_dict AGMCORE_gget begin - CSA map_csa - begin - AGMIMG_init_common - SkipImageProc{ - currentdict consumeimagedata - }{ - save mark - AGMCORE_avoid_L2_sep_space{ - /Decode[Decode 0 get 255 mul Decode 1 get 255 mul]def - }if - AGMIMG_ccimage_exists - MappedCSA 0 get/DeviceCMYK eq and - currentdict/Components known and - Name()ne and - Name(All)ne and - Operator/image eq and - AGMCORE_producing_seps not and - level2 not and - { - Width Height BitsPerComponent ImageMatrix - [ - /DataSource load/exec cvx - { - 0 1 2 index length 1 sub{ - 1 index exch - 2 copy get 255 xor put - }for - }/exec cvx - ]cvx bind - MappedCSA 0 get/DeviceCMYK eq{ - Components aload pop - }{ - 0 0 0 Components aload pop 1 exch sub - }ifelse - Name findcmykcustomcolor - customcolorimage - }{ - AGMCORE_producing_seps not{ - level2{ - //Adobe_AGM_Core/AGMCORE_pattern_paint_type get 2 ne AGMCORE_avoid_L2_sep_space not and currentcolorspace 0 get/Separation ne and{ - [/Separation Name MappedCSA sep_proc_name exch dup 0 get 15 string cvs(/Device)anchorsearch{pop pop 0 get}{pop}ifelse exch load]setcolorspace_opt - /sep_tint AGMCORE_gget setcolor - }if - currentdict imageormask - }{ - currentdict - Operator/imagemask eq{ - imageormask - }{ - sep_imageormask_lev1 - }ifelse - }ifelse - }{ - AGMCORE_host_sep{ - Operator/knockout eq{ - currentdict/ImageMatrix get concat - knockout_unitsq - }{ - currentgray 1 ne{ - AGMCORE_is_cmyk_sep Name(All)ne and{ - level2{ - Name AGMCORE_IsSeparationAProcessColor - { - Operator/imagemask eq{ - //Adobe_AGM_Core/AGMCORE_pattern_paint_type get 2 ne{ - /sep_tint AGMCORE_gget 1 exch sub AGMCORE_&setcolor - }if - }{ - invert_image_samples - }ifelse - }{ - //Adobe_AGM_Core/AGMCORE_pattern_paint_type get 2 ne{ - [/Separation Name[/DeviceGray] - { - sep_colorspace_proc AGMCORE_get_ink_data - 1 exch sub - }bind - ]AGMCORE_&setcolorspace - /sep_tint AGMCORE_gget AGMCORE_&setcolor - }if - }ifelse - currentdict imageormask_sys - }{ - currentdict - Operator/imagemask eq{ - imageormask_sys - }{ - sep_image_lev1_sep - }ifelse - }ifelse - }{ - Operator/imagemask ne{ - invert_image_samples - }if - currentdict imageormask_sys - }ifelse - }{ - currentoverprint not Name(All)eq or Operator/imagemask eq and{ - currentdict imageormask_sys - }{ - currentoverprint not - { - gsave - knockout_unitsq - grestore - }if - currentdict consumeimagedata - }ifelse - }ifelse - }ifelse - }{ - //Adobe_AGM_Core/AGMCORE_pattern_paint_type get 2 ne{ - currentcolorspace 0 get/Separation ne{ - [/Separation Name MappedCSA sep_proc_name exch 0 get exch load]setcolorspace_opt - /sep_tint AGMCORE_gget setcolor - }if - }if - currentoverprint - MappedCSA 0 get/DeviceCMYK eq and - Name AGMCORE_IsSeparationAProcessColor not and - //Adobe_AGM_Core/AGMCORE_pattern_paint_type get 2 ne{Name inRip_spot_has_ink not and}{false}ifelse - Name(All)ne and{ - imageormask_l2_overprint - }{ - currentdict imageormask - }ifelse - }ifelse - }ifelse - }ifelse - cleartomark restore - }ifelse - currentdict/_Filters known{_Filters AGMIMG_flushfilters}if - end - end -}def -/colorSpaceElemCnt -{ - mark currentcolor counttomark dup 2 add 1 roll cleartomark -}bdf -/devn_sep_datasource -{ - 1 dict begin - /dataSource xdf - [ - 0 1 dataSource length 1 sub{ - dup currentdict/dataSource get/exch cvx/get cvx/exec cvx - /exch cvx names_index/ne cvx[/pop cvx]cvx/if cvx - }for - ]cvx bind - end -}bdf -/devn_alt_datasource -{ - 11 dict begin - /convProc xdf - /origcolorSpaceElemCnt xdf - /origMultipleDataSources xdf - /origBitsPerComponent xdf - /origDecode xdf - /origDataSource xdf - /dsCnt origMultipleDataSources{origDataSource length}{1}ifelse def - /DataSource origMultipleDataSources - { - [ - BitsPerComponent 8 idiv origDecode length 2 idiv mul string - 0 1 origDecode length 2 idiv 1 sub - { - dup 7 mul 1 add index exch dup BitsPerComponent 8 idiv mul exch - origDataSource exch get 0()/SubFileDecode filter - BitsPerComponent 8 idiv string/readstring cvx/pop cvx/putinterval cvx - }for - ]bind cvx - }{origDataSource}ifelse 0()/SubFileDecode filter def - [ - origcolorSpaceElemCnt string - 0 2 origDecode length 2 sub - { - dup origDecode exch get dup 3 -1 roll 1 add origDecode exch get exch sub 2 BitsPerComponent exp 1 sub div - 1 BitsPerComponent 8 idiv{DataSource/read cvx/not cvx{0}/if cvx/mul cvx}repeat/mul cvx/add cvx - }for - /convProc load/exec cvx - origcolorSpaceElemCnt 1 sub -1 0 - { - /dup cvx 2/add cvx/index cvx - 3 1/roll cvx/exch cvx 255/mul cvx/cvi cvx/put cvx - }for - ]bind cvx 0()/SubFileDecode filter - end -}bdf -/devn_imageormask -{ - /devicen_colorspace_dict AGMCORE_gget begin - CSA map_csa - 2 dict begin - dup - /srcDataStrs[3 -1 roll begin - AGMIMG_init_common - currentdict/MultipleDataSources known{MultipleDataSources{DataSource length}{1}ifelse}{1}ifelse - { - Width Decode length 2 div mul cvi - { - dup 65535 gt{1 add 2 div cvi}{exit}ifelse - }loop - string - }repeat - end]def - /dstDataStr srcDataStrs 0 get length string def - begin - AGMIMG_init_common - SkipImageProc{ - currentdict consumeimagedata - }{ - save mark - AGMCORE_producing_seps not{ - level3 not{ - Operator/imagemask ne{ - /DataSource[[ - DataSource Decode BitsPerComponent currentdict/MultipleDataSources known{MultipleDataSources}{false}ifelse - colorSpaceElemCnt/devicen_colorspace_dict AGMCORE_gget/TintTransform get - devn_alt_datasource 1/string cvx/readstring cvx/pop cvx]cvx colorSpaceElemCnt 1 sub{dup}repeat]def - /MultipleDataSources true def - /Decode colorSpaceElemCnt[exch{0 1}repeat]def - }if - }if - currentdict imageormask - }{ - AGMCORE_host_sep{ - Names convert_to_process{ - CSA get_csa_by_name 0 get/DeviceCMYK eq{ - /DataSource - Width BitsPerComponent mul 7 add 8 idiv Height mul 4 mul - DataSource Decode BitsPerComponent currentdict/MultipleDataSources known{MultipleDataSources}{false}ifelse - 4/devicen_colorspace_dict AGMCORE_gget/TintTransform get - devn_alt_datasource - filter_cmyk 0()/SubFileDecode filter def - /MultipleDataSources false def - /Decode[1 0]def - /DeviceGray setcolorspace - currentdict imageormask_sys - }{ - AGMCORE_report_unsupported_color_space - AGMCORE_black_plate{ - /DataSource - DataSource Decode BitsPerComponent currentdict/MultipleDataSources known{MultipleDataSources}{false}ifelse - CSA get_csa_by_name 0 get/DeviceRGB eq{3}{1}ifelse/devicen_colorspace_dict AGMCORE_gget/TintTransform get - devn_alt_datasource - /MultipleDataSources false def - /Decode colorSpaceElemCnt[exch{0 1}repeat]def - currentdict imageormask_sys - }{ - gsave - knockout_unitsq - grestore - currentdict consumeimagedata - }ifelse - }ifelse - } - { - /devicen_colorspace_dict AGMCORE_gget/names_index known{ - Operator/imagemask ne{ - MultipleDataSources{ - /DataSource[DataSource devn_sep_datasource/exec cvx]cvx def - /MultipleDataSources false def - }{ - /DataSource/DataSource load dstDataStr srcDataStrs 0 get filter_devn def - }ifelse - invert_image_samples - }if - currentdict imageormask_sys - }{ - currentoverprint not Operator/imagemask eq and{ - currentdict imageormask_sys - }{ - currentoverprint not - { - gsave - knockout_unitsq - grestore - }if - currentdict consumeimagedata - }ifelse - }ifelse - }ifelse - }{ - currentdict imageormask - }ifelse - }ifelse - cleartomark restore - }ifelse - currentdict/_Filters known{_Filters AGMIMG_flushfilters}if - end - end - end -}def -/imageormask_l2_overprint -{ - currentdict - currentcmykcolor add add add 0 eq{ - currentdict consumeimagedata - }{ - level3{ - currentcmykcolor - /AGMIMG_k xdf - /AGMIMG_y xdf - /AGMIMG_m xdf - /AGMIMG_c xdf - Operator/imagemask eq{ - [/DeviceN[ - AGMIMG_c 0 ne{/Cyan}if - AGMIMG_m 0 ne{/Magenta}if - AGMIMG_y 0 ne{/Yellow}if - AGMIMG_k 0 ne{/Black}if - ]/DeviceCMYK{}]setcolorspace - AGMIMG_c 0 ne{AGMIMG_c}if - AGMIMG_m 0 ne{AGMIMG_m}if - AGMIMG_y 0 ne{AGMIMG_y}if - AGMIMG_k 0 ne{AGMIMG_k}if - setcolor - }{ - /Decode[Decode 0 get 255 mul Decode 1 get 255 mul]def - [/Indexed - [ - /DeviceN[ - AGMIMG_c 0 ne{/Cyan}if - AGMIMG_m 0 ne{/Magenta}if - AGMIMG_y 0 ne{/Yellow}if - AGMIMG_k 0 ne{/Black}if - ] - /DeviceCMYK{ - AGMIMG_k 0 eq{0}if - AGMIMG_y 0 eq{0 exch}if - AGMIMG_m 0 eq{0 3 1 roll}if - AGMIMG_c 0 eq{0 4 1 roll}if - } - ] - 255 - { - 255 div - mark exch - dup dup dup - AGMIMG_k 0 ne{ - /sep_tint AGMCORE_gget mul MappedCSA sep_proc_name exch pop load exec 4 1 roll pop pop pop - counttomark 1 roll - }{ - pop - }ifelse - AGMIMG_y 0 ne{ - /sep_tint AGMCORE_gget mul MappedCSA sep_proc_name exch pop load exec 4 2 roll pop pop pop - counttomark 1 roll - }{ - pop - }ifelse - AGMIMG_m 0 ne{ - /sep_tint AGMCORE_gget mul MappedCSA sep_proc_name exch pop load exec 4 3 roll pop pop pop - counttomark 1 roll - }{ - pop - }ifelse - AGMIMG_c 0 ne{ - /sep_tint AGMCORE_gget mul MappedCSA sep_proc_name exch pop load exec pop pop pop - counttomark 1 roll - }{ - pop - }ifelse - counttomark 1 add -1 roll pop - } - ]setcolorspace - }ifelse - imageormask_sys - }{ - write_image_file{ - currentcmykcolor - 0 ne{ - [/Separation/Black/DeviceGray{}]setcolorspace - gsave - /Black - [{1 exch sub/sep_tint AGMCORE_gget mul}/exec cvx MappedCSA sep_proc_name cvx exch pop{4 1 roll pop pop pop 1 exch sub}/exec cvx] - cvx modify_halftone_xfer - Operator currentdict read_image_file - grestore - }if - 0 ne{ - [/Separation/Yellow/DeviceGray{}]setcolorspace - gsave - /Yellow - [{1 exch sub/sep_tint AGMCORE_gget mul}/exec cvx MappedCSA sep_proc_name cvx exch pop{4 2 roll pop pop pop 1 exch sub}/exec cvx] - cvx modify_halftone_xfer - Operator currentdict read_image_file - grestore - }if - 0 ne{ - [/Separation/Magenta/DeviceGray{}]setcolorspace - gsave - /Magenta - [{1 exch sub/sep_tint AGMCORE_gget mul}/exec cvx MappedCSA sep_proc_name cvx exch pop{4 3 roll pop pop pop 1 exch sub}/exec cvx] - cvx modify_halftone_xfer - Operator currentdict read_image_file - grestore - }if - 0 ne{ - [/Separation/Cyan/DeviceGray{}]setcolorspace - gsave - /Cyan - [{1 exch sub/sep_tint AGMCORE_gget mul}/exec cvx MappedCSA sep_proc_name cvx exch pop{pop pop pop 1 exch sub}/exec cvx] - cvx modify_halftone_xfer - Operator currentdict read_image_file - grestore - }if - close_image_file - }{ - imageormask - }ifelse - }ifelse - }ifelse -}def -/indexed_imageormask -{ - begin - AGMIMG_init_common - save mark - currentdict - AGMCORE_host_sep{ - Operator/knockout eq{ - /indexed_colorspace_dict AGMCORE_gget dup/CSA known{ - /CSA get get_csa_by_name - }{ - /Names get - }ifelse - overprint_plate not{ - knockout_unitsq - }if - }{ - Indexed_DeviceN{ - /devicen_colorspace_dict AGMCORE_gget dup/names_index known exch/Names get convert_to_process or{ - indexed_image_lev2_sep - }{ - currentoverprint not{ - knockout_unitsq - }if - currentdict consumeimagedata - }ifelse - }{ - AGMCORE_is_cmyk_sep{ - Operator/imagemask eq{ - imageormask_sys - }{ - level2{ - indexed_image_lev2_sep - }{ - indexed_image_lev1_sep - }ifelse - }ifelse - }{ - currentoverprint not{ - knockout_unitsq - }if - currentdict consumeimagedata - }ifelse - }ifelse - }ifelse - }{ - level2{ - Indexed_DeviceN{ - /indexed_colorspace_dict AGMCORE_gget begin - }{ - /indexed_colorspace_dict AGMCORE_gget dup null ne - { - begin - currentdict/CSDBase known{CSDBase/CSD get_res/MappedCSA get}{CSA}ifelse - get_csa_by_name 0 get/DeviceCMYK eq ps_level 3 ge and ps_version 3015.007 lt and - AGMCORE_in_rip_sep and{ - [/Indexed[/DeviceN[/Cyan/Magenta/Yellow/Black]/DeviceCMYK{}]HiVal Lookup] - setcolorspace - }if - end - } - {pop}ifelse - }ifelse - imageormask - Indexed_DeviceN{ - end - }if - }{ - Operator/imagemask eq{ - imageormask - }{ - indexed_imageormask_lev1 - }ifelse - }ifelse - }ifelse - cleartomark restore - currentdict/_Filters known{_Filters AGMIMG_flushfilters}if - end -}def -/indexed_image_lev2_sep -{ - /indexed_colorspace_dict AGMCORE_gget begin - begin - Indexed_DeviceN not{ - currentcolorspace - dup 1/DeviceGray put - dup 3 - currentcolorspace 2 get 1 add string - 0 1 2 3 AGMCORE_get_ink_data 4 currentcolorspace 3 get length 1 sub - { - dup 4 idiv exch currentcolorspace 3 get exch get 255 exch sub 2 index 3 1 roll put - }for - put setcolorspace - }if - currentdict - Operator/imagemask eq{ - AGMIMG_&imagemask - }{ - use_mask{ - process_mask AGMIMG_&image - }{ - AGMIMG_&image - }ifelse - }ifelse - end end -}def - /OPIimage - { - dup type/dicttype ne{ - 10 dict begin - /DataSource xdf - /ImageMatrix xdf - /BitsPerComponent xdf - /Height xdf - /Width xdf - /ImageType 1 def - /Decode[0 1 def] - currentdict - end - }if - dup begin - /NComponents 1 cdndf - /MultipleDataSources false cdndf - /SkipImageProc{false}cdndf - /Decode[ - 0 - currentcolorspace 0 get/Indexed eq{ - 2 BitsPerComponent exp 1 sub - }{ - 1 - }ifelse - ]cdndf - /Operator/image cdndf - end - /sep_colorspace_dict AGMCORE_gget null eq{ - imageormask - }{ - gsave - dup begin invert_image_samples end - sep_imageormask - grestore - }ifelse - }def -/cachemask_level2 -{ - 3 dict begin - /LZWEncode filter/WriteFilter xdf - /readBuffer 256 string def - /ReadFilter - currentfile - 0(%EndMask)/SubFileDecode filter - /ASCII85Decode filter - /RunLengthDecode filter - def - { - ReadFilter readBuffer readstring exch - WriteFilter exch writestring - not{exit}if - }loop - WriteFilter closefile - end -}def -/spot_alias -{ - /mapto_sep_imageormask - { - dup type/dicttype ne{ - 12 dict begin - /ImageType 1 def - /DataSource xdf - /ImageMatrix xdf - /BitsPerComponent xdf - /Height xdf - /Width xdf - /MultipleDataSources false def - }{ - begin - }ifelse - /Decode[/customcolor_tint AGMCORE_gget 0]def - /Operator/image def - /SkipImageProc{false}def - currentdict - end - sep_imageormask - }bdf - /customcolorimage - { - Adobe_AGM_Image/AGMIMG_colorAry xddf - /customcolor_tint AGMCORE_gget - << - /Name AGMIMG_colorAry 4 get - /CSA[/DeviceCMYK] - /TintMethod/Subtractive - /TintProc null - /MappedCSA null - /NComponents 4 - /Components[AGMIMG_colorAry aload pop pop] - >> - setsepcolorspace - mapto_sep_imageormask - }ndf - Adobe_AGM_Image/AGMIMG_&customcolorimage/customcolorimage load put - /customcolorimage - { - Adobe_AGM_Image/AGMIMG_override false put - current_spot_alias{dup 4 get map_alias}{false}ifelse - { - false set_spot_alias - /customcolor_tint AGMCORE_gget exch setsepcolorspace - pop - mapto_sep_imageormask - true set_spot_alias - }{ - //Adobe_AGM_Image/AGMIMG_&customcolorimage get exec - }ifelse - }bdf -}def -/snap_to_device -{ - 6 dict begin - matrix currentmatrix - dup 0 get 0 eq 1 index 3 get 0 eq and - 1 index 1 get 0 eq 2 index 2 get 0 eq and or exch pop - { - 1 1 dtransform 0 gt exch 0 gt/AGMIMG_xSign? exch def/AGMIMG_ySign? exch def - 0 0 transform - AGMIMG_ySign?{floor 0.1 sub}{ceiling 0.1 add}ifelse exch - AGMIMG_xSign?{floor 0.1 sub}{ceiling 0.1 add}ifelse exch - itransform/AGMIMG_llY exch def/AGMIMG_llX exch def - 1 1 transform - AGMIMG_ySign?{ceiling 0.1 add}{floor 0.1 sub}ifelse exch - AGMIMG_xSign?{ceiling 0.1 add}{floor 0.1 sub}ifelse exch - itransform/AGMIMG_urY exch def/AGMIMG_urX exch def - [AGMIMG_urX AGMIMG_llX sub 0 0 AGMIMG_urY AGMIMG_llY sub AGMIMG_llX AGMIMG_llY]concat - }{ - }ifelse - end -}def -level2 not{ - /colorbuf - { - 0 1 2 index length 1 sub{ - dup 2 index exch get - 255 exch sub - 2 index - 3 1 roll - put - }for - }def - /tint_image_to_color - { - begin - Width Height BitsPerComponent ImageMatrix - /DataSource load - end - Adobe_AGM_Image begin - /AGMIMG_mbuf 0 string def - /AGMIMG_ybuf 0 string def - /AGMIMG_kbuf 0 string def - { - colorbuf dup length AGMIMG_mbuf length ne - { - dup length dup dup - /AGMIMG_mbuf exch string def - /AGMIMG_ybuf exch string def - /AGMIMG_kbuf exch string def - }if - dup AGMIMG_mbuf copy AGMIMG_ybuf copy AGMIMG_kbuf copy pop - } - addprocs - {AGMIMG_mbuf}{AGMIMG_ybuf}{AGMIMG_kbuf}true 4 colorimage - end - }def - /sep_imageormask_lev1 - { - begin - MappedCSA 0 get dup/DeviceRGB eq exch/DeviceCMYK eq or has_color not and{ - { - 255 mul round cvi GrayLookup exch get - }currenttransfer addprocs settransfer - currentdict imageormask - }{ - /sep_colorspace_dict AGMCORE_gget/Components known{ - MappedCSA 0 get/DeviceCMYK eq{ - Components aload pop - }{ - 0 0 0 Components aload pop 1 exch sub - }ifelse - Adobe_AGM_Image/AGMIMG_k xddf - Adobe_AGM_Image/AGMIMG_y xddf - Adobe_AGM_Image/AGMIMG_m xddf - Adobe_AGM_Image/AGMIMG_c xddf - AGMIMG_y 0.0 eq AGMIMG_m 0.0 eq and AGMIMG_c 0.0 eq and{ - {AGMIMG_k mul 1 exch sub}currenttransfer addprocs settransfer - currentdict imageormask - }{ - currentcolortransfer - {AGMIMG_k mul 1 exch sub}exch addprocs 4 1 roll - {AGMIMG_y mul 1 exch sub}exch addprocs 4 1 roll - {AGMIMG_m mul 1 exch sub}exch addprocs 4 1 roll - {AGMIMG_c mul 1 exch sub}exch addprocs 4 1 roll - setcolortransfer - currentdict tint_image_to_color - }ifelse - }{ - MappedCSA 0 get/DeviceGray eq{ - {255 mul round cvi ColorLookup exch get 0 get}currenttransfer addprocs settransfer - currentdict imageormask - }{ - MappedCSA 0 get/DeviceCMYK eq{ - currentcolortransfer - {255 mul round cvi ColorLookup exch get 3 get 1 exch sub}exch addprocs 4 1 roll - {255 mul round cvi ColorLookup exch get 2 get 1 exch sub}exch addprocs 4 1 roll - {255 mul round cvi ColorLookup exch get 1 get 1 exch sub}exch addprocs 4 1 roll - {255 mul round cvi ColorLookup exch get 0 get 1 exch sub}exch addprocs 4 1 roll - setcolortransfer - currentdict tint_image_to_color - }{ - currentcolortransfer - {pop 1}exch addprocs 4 1 roll - {255 mul round cvi ColorLookup exch get 2 get}exch addprocs 4 1 roll - {255 mul round cvi ColorLookup exch get 1 get}exch addprocs 4 1 roll - {255 mul round cvi ColorLookup exch get 0 get}exch addprocs 4 1 roll - setcolortransfer - currentdict tint_image_to_color - }ifelse - }ifelse - }ifelse - }ifelse - end - }def - /sep_image_lev1_sep - { - begin - /sep_colorspace_dict AGMCORE_gget/Components known{ - Components aload pop - Adobe_AGM_Image/AGMIMG_k xddf - Adobe_AGM_Image/AGMIMG_y xddf - Adobe_AGM_Image/AGMIMG_m xddf - Adobe_AGM_Image/AGMIMG_c xddf - {AGMIMG_c mul 1 exch sub} - {AGMIMG_m mul 1 exch sub} - {AGMIMG_y mul 1 exch sub} - {AGMIMG_k mul 1 exch sub} - }{ - {255 mul round cvi ColorLookup exch get 0 get 1 exch sub} - {255 mul round cvi ColorLookup exch get 1 get 1 exch sub} - {255 mul round cvi ColorLookup exch get 2 get 1 exch sub} - {255 mul round cvi ColorLookup exch get 3 get 1 exch sub} - }ifelse - AGMCORE_get_ink_data currenttransfer addprocs settransfer - currentdict imageormask_sys - end - }def - /indexed_imageormask_lev1 - { - /indexed_colorspace_dict AGMCORE_gget begin - begin - currentdict - MappedCSA 0 get dup/DeviceRGB eq exch/DeviceCMYK eq or has_color not and{ - {HiVal mul round cvi GrayLookup exch get HiVal div}currenttransfer addprocs settransfer - imageormask - }{ - MappedCSA 0 get/DeviceGray eq{ - {HiVal mul round cvi Lookup exch get HiVal div}currenttransfer addprocs settransfer - imageormask - }{ - MappedCSA 0 get/DeviceCMYK eq{ - currentcolortransfer - {4 mul HiVal mul round cvi 3 add Lookup exch get HiVal div 1 exch sub}exch addprocs 4 1 roll - {4 mul HiVal mul round cvi 2 add Lookup exch get HiVal div 1 exch sub}exch addprocs 4 1 roll - {4 mul HiVal mul round cvi 1 add Lookup exch get HiVal div 1 exch sub}exch addprocs 4 1 roll - {4 mul HiVal mul round cvi Lookup exch get HiVal div 1 exch sub}exch addprocs 4 1 roll - setcolortransfer - tint_image_to_color - }{ - currentcolortransfer - {pop 1}exch addprocs 4 1 roll - {3 mul HiVal mul round cvi 2 add Lookup exch get HiVal div}exch addprocs 4 1 roll - {3 mul HiVal mul round cvi 1 add Lookup exch get HiVal div}exch addprocs 4 1 roll - {3 mul HiVal mul round cvi Lookup exch get HiVal div}exch addprocs 4 1 roll - setcolortransfer - tint_image_to_color - }ifelse - }ifelse - }ifelse - end end - }def - /indexed_image_lev1_sep - { - /indexed_colorspace_dict AGMCORE_gget begin - begin - {4 mul HiVal mul round cvi Lookup exch get HiVal div 1 exch sub} - {4 mul HiVal mul round cvi 1 add Lookup exch get HiVal div 1 exch sub} - {4 mul HiVal mul round cvi 2 add Lookup exch get HiVal div 1 exch sub} - {4 mul HiVal mul round cvi 3 add Lookup exch get HiVal div 1 exch sub} - AGMCORE_get_ink_data currenttransfer addprocs settransfer - currentdict imageormask_sys - end end - }def -}if -end -systemdict/setpacking known -{setpacking}if -%%EndResource -currentdict Adobe_AGM_Utils eq {end} if -%%EndProlog -%%BeginSetup -Adobe_AGM_Utils begin -2 2010 Adobe_AGM_Core/ds gx -Adobe_CoolType_Core/ds get exec Adobe_AGM_Image/ds gx -currentdict Adobe_AGM_Utils eq {end} if -%%EndSetup -%%Page: 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- - - - - - - - - - - % &&end XMP packet marker&& [{ai_metadata_stream_123} <> /PUT AI11_PDFMark5 [/Document 1 dict begin /Metadata {ai_metadata_stream_123} def currentdict end /BDC AI11_PDFMark5 -%ADOEndClientInjection: PageSetup End "AI11EPS" -%%EndPageSetup -1 -1 scale 0 -211.304 translate -pgsv -[1 0 0 1 0 0 ]ct -gsave -np -gsave -0 0 mo -0 211.304 li -372 211.304 li -372 0 li -cp -clp -[1 0 0 1 0 0 ]ct -103.096 139.708 mo -103.039 138.986 103.005 138.517 103.005 138.517 cv -103.005 138.517 100.816 123.759 98.21 119.355 cv -97.7979 118.657 98.2549 115.79 99.4053 111.543 cv -100.078 112.706 102.917 117.68 103.487 119.283 cv -104.129 121.095 104.264 121.614 104.264 121.614 cv -104.264 121.614 102.707 113.603 100.152 108.928 cv -100.712 107.038 101.381 104.949 102.138 102.716 cv -103.106 104.414 105.423 108.525 105.933 109.951 cv -106.036 110.244 106.123 110.493 106.201 110.721 cv -106.226 110.584 106.251 110.447 106.276 110.31 cv -105.691 107.828 104.542 103.509 102.969 100.318 cv -106.459 82.1528 118.362 57.8726 130.565 47.0405 cv -50.96 47.0405 li -45.625 47.0405 41.2598 51.4063 41.2598 56.7407 cv -41.2598 144.53 li -41.2598 149.865 45.625 154.23 50.96 154.23 cv -103.39 154.23 li -103.012 149.654 102.886 144.591 103.096 139.708 cv -cp -false sop -/0 -<< -/Name (PANTONE 3005 U) -/0 -[/DeviceCMYK] /CSA add_res -/CSA /0 get_csa_by_name -/MappedCSA /0 /CSA get_res -/TintMethod /Subtractive -/TintProc null -/NComponents 4 -/Components [ 1 0.34 0 0.02 ] ->> -/CSD add_res -1 /0 /CSD get_res sepcs -1 sep -f -161.875 105.281 mo -163.221 105.281 li -163.221 116.492 li -161.795 116.492 li -161.469 113.393 160.348 110.974 158.432 109.234 cv -156.514 107.497 154.104 106.626 151.196 106.626 cv -148.612 106.626 146.534 107.279 144.958 108.583 cv -143.382 109.886 142.594 111.626 142.594 113.801 cv -142.594 115.812 143.246 117.646 144.551 119.303 cv -145.854 120.962 148.682 123.093 153.031 125.706 cv -158.085 128.722 161.482 131.355 163.221 133.613 cv -164.96 135.868 165.829 138.45 165.829 141.358 cv -165.829 145.108 164.502 148.315 161.844 150.978 cv -159.182 153.642 155.979 154.973 152.236 154.973 cv -150.064 154.973 147.297 154.375 143.932 153.178 cv -142.549 152.689 141.666 152.447 141.287 152.447 cv -140.499 152.447 139.89 153.057 139.455 154.281 cv -138.028 154.281 li -138.028 141.358 li -139.455 141.358 li -139.481 144.919 140.642 147.772 142.934 149.92 cv -145.226 152.065 147.904 153.138 150.968 153.138 cv -153.873 153.138 156.196 152.366 157.948 150.814 cv -159.697 149.263 160.572 147.197 160.572 144.612 cv -160.572 142.681 159.852 140.832 158.415 139.065 cv -156.979 137.296 153.972 135.018 149.4 132.227 cv -145.674 129.923 143.186 128.11 141.937 126.776 cv -140.688 125.443 139.765 123.982 139.168 122.39 cv -138.571 120.801 138.272 119.052 138.272 117.15 cv -138.272 113.48 139.476 110.502 141.881 108.217 cv -144.286 105.934 147.418 104.792 151.276 104.792 cv -153.396 104.792 155.707 105.213 158.207 106.055 cv -159.374 106.436 160.19 106.626 160.651 106.626 cv -161.034 106.626 161.291 106.545 161.425 106.382 cv -161.563 106.218 161.713 105.852 161.875 105.281 cv -cp -/1 -<< -/Name (PANTONE 309 U) -/CSA /0 get_csa_by_name -/MappedCSA /0 /CSA get_res -/TintMethod /Subtractive -/TintProc null -/NComponents 4 -/Components [ 1 0 0.09 0.72 ] ->> -/CSD add_res -1 /1 /CSD get_res sepcs -1 sep -f -216.34 130.229 mo -216.34 122.917 214.667 117.157 211.324 112.944 cv -207.98 108.732 203.66 106.626 198.358 106.626 cv -192.733 106.626 188.244 108.741 184.888 112.964 cv -181.53 117.192 179.855 122.837 179.855 129.903 cv -179.855 136.779 181.519 142.372 184.847 146.679 cv -188.178 150.986 192.518 153.138 197.871 153.138 cv -203.443 153.138 207.913 151.053 211.282 146.881 cv -214.651 142.708 216.34 137.158 216.34 130.229 cv -cp -224.653 166.999 mo -225.182 168.304 li -222.846 169.364 220.197 169.894 217.235 169.894 cv -214.789 169.894 212.518 169.573 210.426 168.936 cv -208.336 168.296 206.369 167.319 204.537 166 cv -202.703 164.682 200.466 162.487 197.83 159.418 cv -195.491 156.699 193.698 155.012 192.449 154.361 cv -186.986 153.249 182.294 150.365 178.365 145.721 cv -174.438 141.074 172.474 135.772 172.474 129.821 cv -172.474 125.391 173.602 121.221 175.857 117.307 cv -178.113 113.393 181.171 110.329 185.033 108.116 cv -188.889 105.899 193.17 104.792 197.871 104.792 cv -205.128 104.792 211.242 107.205 216.217 112.028 cv -221.188 116.85 223.674 122.783 223.674 129.821 cv -223.674 135.748 221.76 141.023 217.928 145.657 cv -214.095 150.293 209.189 153.194 203.212 154.361 cv -203.784 154.819 204.806 155.976 206.272 157.826 cv -209.391 161.687 212 164.306 214.091 165.678 cv -216.185 167.046 218.264 167.734 220.331 167.734 cv -221.854 167.734 223.297 167.488 224.653 166.999 cv -cp -f -259.776 146.473 mo -258.979 154.111 li -227.787 154.111 li -227.853 152.591 li -229.544 152.418 230.729 151.984 231.42 151.291 cv -232.11 150.593 232.459 148.992 232.485 146.473 cv -232.521 112.728 li -232.509 110.965 232.423 109.75 232.277 109.087 cv -231.885 107.234 230.135 106.309 227.005 106.309 cv -226.938 104.792 li -243.22 104.792 li -243.282 106.309 li -241.546 106.427 240.358 106.895 239.693 107.717 cv -239.035 108.542 238.709 110.213 238.71 112.728 cv -238.585 146.826 li -238.59 147.406 238.639 147.937 238.747 148.429 cv -239.27 150.917 241.243 152.158 244.665 152.158 cv -247.604 152.158 li -251.407 152.158 254.046 151.73 255.535 150.876 cv -257.02 150.028 257.964 148.557 258.371 146.473 cv -259.776 146.473 li -cp -f -270.119 113.882 mo -270.855 113.882 271.533 114.14 272.159 114.658 cv -272.778 115.174 273.181 115.812 273.336 116.571 cv -273.487 117.307 273.362 117.946 272.959 118.489 cv -272.556 119.032 271.992 119.303 271.256 119.303 cv -270.495 119.303 269.786 119.032 269.13 118.489 cv -268.47 117.946 268.066 117.307 267.916 116.571 cv -267.761 115.812 267.886 115.174 268.33 114.658 cv -268.764 114.14 269.358 113.882 270.119 113.882 cv -cp -275.101 125.583 mo -275.051 146.943 li -275.06 148.436 275.136 149.497 275.269 150.124 cv -275.441 150.994 275.827 151.583 276.406 151.895 cv -276.995 152.209 278.309 152.366 280.348 152.366 cv -280.395 153.792 li -265.72 153.792 li -265.755 152.366 li -267.767 152.366 269.003 152.18 269.474 151.814 cv -269.941 151.449 270.181 150.218 270.207 148.125 cv -270.299 133.002 li -270.282 132.177 270.23 131.532 270.133 131.064 cv -269.845 129.666 268.923 128.965 267.373 128.965 cv -264.189 129.372 li -264.174 127.701 li -273.424 125.583 li -275.101 125.583 li -cp -f -299.717 126.315 mo -299.787 128.597 li -292.118 128.597 li -292.063 147.671 li -292.063 148.191 292.094 148.638 292.183 149.021 cv -292.508 150.597 293.372 151.387 294.761 151.387 cv -297.021 151.387 299.6 149.906 302.527 146.943 cv -303.758 147.981 li -299.704 152.48 295.83 154.728 292.135 154.728 cv -289.581 154.728 288.058 153.559 287.563 151.222 cv -287.359 150.246 287.257 148.315 287.249 145.434 cv -287.354 128.597 li -282.338 128.597 li -282.28 127.172 li -286.584 126.738 289.38 124.034 290.673 119.06 cv -292.14 119.06 li -292.127 126.315 li -299.717 126.315 li -cp -f -311.427 140.01 mo -319.449 138.461 323.033 135.679 322.196 131.658 cv -322.025 130.839 321.502 130.092 320.645 129.414 cv -319.776 128.734 318.904 128.394 318.011 128.394 cv -315.972 128.394 314.303 129.597 313.017 132.001 cv -311.721 134.407 311.198 137.078 311.427 140.01 cv -cp -311.381 141.522 mo -311.449 142.227 311.544 142.894 311.677 143.518 cv -312.7 148.409 315.455 150.855 319.937 150.855 cv -323.197 150.855 327.513 148.887 329.655 144.946 cv -330.741 146.066 li -329.398 149.104 327.935 151.306 326.357 152.675 cv -324.783 154.045 321.037 154.728 318.351 154.728 cv -315.466 154.728 313.074 153.92 311.172 152.303 cv -309.267 150.685 308.014 148.396 307.389 145.434 cv -306.327 140.378 307.15 135.782 309.851 131.634 cv -312.566 127.493 316.063 125.417 320.356 125.417 cv -322.045 125.417 325.076 125.848 326.24 126.703 cv -327.389 127.558 328.122 128.707 328.426 130.146 cv -328.937 132.567 326.205 134.854 323.48 137.016 cv -320.753 139.177 316.713 140.678 311.381 141.522 cv -cp -f -99.4053 111.543 mo -100.078 112.706 102.917 117.68 103.487 119.283 cv -104.129 121.095 104.264 121.614 104.264 121.614 cv -104.264 121.614 102.707 113.603 100.152 108.928 cv -100.712 107.038 101.381 104.949 102.138 102.716 cv -103.023 104.269 105.034 107.836 105.761 109.526 cv -105.788 109.207 105.815 108.888 105.843 108.572 cv -105.199 106.097 104.221 102.857 102.969 100.318 cv -106.183 83.5933 116.528 61.6929 127.673 49.8696 cv -50.96 49.8696 li -47.1719 49.8696 44.0889 52.9521 44.0889 56.7407 cv -44.0889 138.125 li -61.4629 131.457 82.4121 125.362 100.442 125.623 cv -99.7725 123.042 99.0107 120.708 98.21 119.355 cv -97.7979 118.657 98.2549 115.79 99.4053 111.543 cv -cp -/2 -<< -/Names [ -(PANTONE 2905 U) -(PANTONE 3005 U) -] -/CSA /0 get_csa_by_name -/TintMethod /Subtractive -/TintProc null -/MappedCSA null -/TintTransform -/0 { -1 3 1 roll 1 3 1 roll 1 3 1 roll 1 3 1 -roll 6 -1 roll 2 index 0.41 mul 1 cvr exch sub mul 1 index -1 mul 1 cvr exch sub mul 1 cvr exch sub 6 1 roll 5 --1 roll 2 index 0.02 mul 1 cvr exch sub mul 1 index 0.34 mul -1 cvr exch sub mul 1 cvr exch sub 5 1 roll 4 -1 roll -2 index 0 mul 1 cvr exch sub mul 1 index 0 mul 1 cvr -exch sub mul 1 cvr exch sub 4 1 roll 3 -1 roll 2 index -0 mul 1 cvr exch sub mul 1 index 0.02 mul 1 cvr exch sub -mul 1 cvr exch sub 3 1 roll pop pop -} bind /Procedure add_res -/0 /Procedure get_res ->> -/CSD add_res -/2 /CSD get_res devncs -level3{ -gsave -clp -[-4.01667e-06 91.8907 -91.8907 -4.01667e-06 85.8809 49.8696 ]ct -/0 -<< -/ShadingType 2 -/ColorSpace [/DeviceN /devicen_colorspace_dict AGMCORE_gget begin /Names load /MappedCSA load /TintTransform load end] -/Coords [0 0 1 0 ] -/Domain [0 1 ] -/Extend[ true true] -/Function -<< -/Domain[0 1 ] -/FunctionType 3 -/Functions [ -<< -/Domain[0 1 ] -/FunctionType 2 -/C0 [0 1 ] -/C1 [1 0 ] -/N 1.3901 ->> -<< -/Domain[0 1 ] -/FunctionType 2 -/C0 [0 1 ] -/C1 [0 1 ] -/N 1 ->> -] -/Bounds [0.920245 ] -/Encode [1 0 0 1 ] ->> ->>/Gradient add_res /0 /Gradient get_res clonedict shfill grestore -}if -level3 not{ -gsave -[-4.01667e-06 91.8907 -91.8907 -4.01667e-06 85.8809 49.8696 ]ct -clp -/0 { -<< -/NumSamples 256 -/NumComp 2 -/Scaling[[0.00392157 0 ][0.00392157 0 ]] -/Samples[ -<~s8Dikq=jUToC;>$4p- -%1/1`;$.4?Pj,pX][+sA'N*Zc=A)]BS3 -(`*r''bh;p&eP]e%h9'Y$k*LO$4."E#R:P<"U,#3!s8T+!W`<&zzzzz!!!!!~> -<~!!*0)"U>;?$OmRW&JGio(E",2*?QCI,:"T`.4Qi"/hf"91c73O3]fGf5=%V'77Kd=8k_rS:f1+i$P?>?t!MTAS,UiC27[(DfKf=FEVkQH$apeIXm!$K8#&8Ll%%KNK0'^P*;,qQC+)/S"-%ATV8*TUnsuf -WN*##Xfek3Z*UgF[^WcW]">Vg^;%J"_Sa=2`lH0Bb0/#RcHjkbdaHUoe^i@)g"P38gtgiEi8ESRj5f=` -k3(sll0@U#m-X3.n*oi:o()DDo_%nNp@n@Wq>'m`qtp -] ->> -0 0 1 0 []true true [] -/DeviceN -GenStrips -} /Gradient add_res /0 /Gradient get_res exec grestore -}if -np -149.133 44.167 mo -143.681 39.3052 137.08 41.2583 130.565 47.0405 cv -129.598 47.8994 128.633 48.8516 127.673 49.8696 cv -116.528 61.6929 106.183 83.5933 102.969 100.318 cv -104.221 102.857 105.199 106.097 105.843 108.572 cv -106.008 109.207 106.157 109.803 106.276 110.31 cv -106.559 111.51 106.711 112.288 106.711 112.288 cv -106.711 112.288 106.611 111.91 106.201 110.721 cv -106.123 110.493 106.036 110.244 105.933 109.951 cv -105.889 109.83 105.828 109.683 105.761 109.526 cv -105.034 107.836 103.023 104.269 102.138 102.716 cv -101.381 104.949 100.712 107.038 100.152 108.928 cv -102.707 113.603 104.264 121.614 104.264 121.614 cv -104.264 121.614 104.129 121.095 103.487 119.283 cv -102.917 117.68 100.078 112.706 99.4053 111.543 cv -98.2549 115.79 97.7979 118.657 98.21 119.355 cv -99.0107 120.708 99.7725 123.042 100.442 125.623 cv -101.954 131.438 103.005 138.517 103.005 138.517 cv -103.005 138.517 103.039 138.986 103.096 139.708 cv -102.886 144.591 103.012 149.654 103.39 154.23 cv -103.891 160.288 104.834 165.492 106.036 168.277 cv -106.852 167.832 li -105.087 162.345 104.37 155.154 104.684 146.861 cv -105.159 134.185 108.076 118.898 113.466 102.965 cv -122.572 78.9131 135.206 59.6152 146.769 50.3994 cv -136.23 59.917 121.966 90.7261 117.696 102.135 cv -112.915 114.911 109.527 126.9 107.485 138.387 cv -111.008 127.618 122.399 122.989 122.399 122.989 cv -122.399 122.989 127.986 116.099 134.515 106.255 cv -130.604 107.147 124.182 108.674 122.031 109.578 cv -118.858 110.909 118.003 111.363 118.003 111.363 cv -118.003 111.363 128.281 105.104 137.099 102.27 cv -149.226 83.1704 162.438 56.0361 149.133 44.167 cv -cp -1 /1 /CSD get_res sepcs -1 sep -f -0.5 lw -0 lc -0 lj -4 ml -[] 0 dsh -true sadj -27 175.304 mo -0 175.304 li -/3 -<< -/Name (All) -/CSA /0 get_csa_by_name -/MappedCSA /0 /CSA get_res -/TintMethod /Subtractive -/TintProc null -/NComponents 4 -/Components [ 1 1 1 1 ] ->> -/CSD add_res -1 /3 /CSD get_res sepcs -1 sep -@ -36 184.304 mo -36 211.304 li -@ -27 36 mo -0 36 li -@ -36 27 mo -36 0 li -@ -345 36 mo -372 36 li -@ -336 27 mo -336 0 li -@ -345 175.304 mo -372 175.304 li -@ -336 184.304 mo -336 211.304 li -@ -%ADOBeginClientInjection: EndPageContent "AI11EPS" -userdict /annotatepage 2 copy known {get exec}{pop pop} ifelse -%ADOEndClientInjection: EndPageContent "AI11EPS" -grestore -grestore -pgrs -%%PageTrailer -%ADOBeginClientInjection: PageTrailer Start "AI11EPS" -[/EMC AI11_PDFMark5 [/NamespacePop AI11_PDFMark5 -%ADOEndClientInjection: PageTrailer Start "AI11EPS" -[ -[/CSA [/0 ]] -[/CSD [/0 /1 /2 /3 ]] -[/Gradient [/0 ]] -[/Procedure [/0 ]] -] del_res -Adobe_AGM_Image/pt gx -Adobe_CoolType_Core/pt get exec Adobe_AGM_Core/pt gx -currentdict Adobe_AGM_Utils eq {end} if -%%Trailer -Adobe_AGM_Image/dt get exec -Adobe_CoolType_Core/dt get exec Adobe_AGM_Core/dt get exec -%%EOF -%AI9_PrintingDataEnd userdict /AI9_read_buffer 256 string put userdict begin /ai9_skip_data { mark { currentfile AI9_read_buffer { readline } stopped { } { not { exit } if (%AI9_PrivateDataEnd) eq { exit } if } ifelse } loop cleartomark } def end userdict /ai9_skip_data get exec %AI9_PrivateDataBegin %!PS-Adobe-3.0 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Hard to guess exactly what SunOS6 will be like, but - # it's likely to be more like Solaris than SunOS4. - echo sparc-sun-solaris3`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` - exit ;; - sun4*:SunOS:*:*) - case "`/usr/bin/arch -k`" in - Series*|S4*) - UNAME_RELEASE=`uname -v` - ;; - esac - # Japanese Language versions have a version number like `4.1.3-JL'. - echo sparc-sun-sunos`echo ${UNAME_RELEASE}|sed -e 's/-/_/'` - exit ;; - sun3*:SunOS:*:*) - echo m68k-sun-sunos${UNAME_RELEASE} - exit ;; - sun*:*:4.2BSD:*) - UNAME_RELEASE=`(sed 1q /etc/motd | awk '{print substr($5,1,3)}') 2>/dev/null` - test "x${UNAME_RELEASE}" = "x" && UNAME_RELEASE=3 - case "`/bin/arch`" in - sun3) - echo m68k-sun-sunos${UNAME_RELEASE} - ;; - sun4) - echo sparc-sun-sunos${UNAME_RELEASE} - ;; - esac - exit ;; - aushp:SunOS:*:*) - echo sparc-auspex-sunos${UNAME_RELEASE} - exit ;; - # The situation for MiNT is a little confusing. The machine name - # can be virtually everything (everything which is not - # "atarist" or "atariste" at least should have a processor - # > m68000). The system name ranges from "MiNT" over "FreeMiNT" - # to the lowercase version "mint" (or "freemint"). Finally - # the system name "TOS" denotes a system which is actually not - # MiNT. But MiNT is downward compatible to TOS, so this should - # be no problem. - atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*) - echo m68k-atari-mint${UNAME_RELEASE} - exit ;; - atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*) - echo m68k-atari-mint${UNAME_RELEASE} - exit ;; - *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*) - echo m68k-atari-mint${UNAME_RELEASE} - exit ;; - milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*) - echo m68k-milan-mint${UNAME_RELEASE} - exit ;; - hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*) - echo m68k-hades-mint${UNAME_RELEASE} - exit ;; - *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*) - echo m68k-unknown-mint${UNAME_RELEASE} - exit ;; - m68k:machten:*:*) - echo m68k-apple-machten${UNAME_RELEASE} - exit ;; - powerpc:machten:*:*) - echo powerpc-apple-machten${UNAME_RELEASE} - exit ;; - RISC*:Mach:*:*) - echo mips-dec-mach_bsd4.3 - exit ;; - RISC*:ULTRIX:*:*) - echo mips-dec-ultrix${UNAME_RELEASE} - exit ;; - VAX*:ULTRIX*:*:*) - echo vax-dec-ultrix${UNAME_RELEASE} - exit ;; - 2020:CLIX:*:* | 2430:CLIX:*:*) - echo clipper-intergraph-clix${UNAME_RELEASE} - exit ;; - mips:*:*:UMIPS | mips:*:*:RISCos) - eval $set_cc_for_build - sed 's/^ //' << EOF >$dummy.c -#ifdef __cplusplus -#include /* for printf() prototype */ - int main (int argc, char *argv[]) { -#else - int main (argc, argv) int argc; char *argv[]; { -#endif - #if defined (host_mips) && defined (MIPSEB) - #if defined (SYSTYPE_SYSV) - printf ("mips-mips-riscos%ssysv\n", argv[1]); exit (0); - #endif - #if defined (SYSTYPE_SVR4) - printf ("mips-mips-riscos%ssvr4\n", argv[1]); exit (0); - #endif - #if defined (SYSTYPE_BSD43) || defined(SYSTYPE_BSD) - printf ("mips-mips-riscos%sbsd\n", argv[1]); exit (0); - #endif - #endif - exit (-1); - } -EOF - $CC_FOR_BUILD -o $dummy $dummy.c && - dummyarg=`echo "${UNAME_RELEASE}" | sed -n 's/\([0-9]*\).*/\1/p'` && - SYSTEM_NAME=`$dummy $dummyarg` && - { echo "$SYSTEM_NAME"; exit; } - echo mips-mips-riscos${UNAME_RELEASE} - exit ;; - Motorola:PowerMAX_OS:*:*) - echo powerpc-motorola-powermax - exit ;; - Motorola:*:4.3:PL8-*) - echo powerpc-harris-powermax - exit ;; - Night_Hawk:*:*:PowerMAX_OS | Synergy:PowerMAX_OS:*:*) - echo powerpc-harris-powermax - exit ;; - Night_Hawk:Power_UNIX:*:*) - echo powerpc-harris-powerunix - exit ;; - m88k:CX/UX:7*:*) - echo m88k-harris-cxux7 - exit ;; - m88k:*:4*:R4*) - echo m88k-motorola-sysv4 - exit ;; - m88k:*:3*:R3*) - echo m88k-motorola-sysv3 - exit ;; - AViiON:dgux:*:*) - # DG/UX returns AViiON for all architectures - UNAME_PROCESSOR=`/usr/bin/uname -p` - if [ $UNAME_PROCESSOR = mc88100 ] || [ $UNAME_PROCESSOR = mc88110 ] - then - if [ ${TARGET_BINARY_INTERFACE}x = m88kdguxelfx ] || \ - [ ${TARGET_BINARY_INTERFACE}x = x ] - then - echo m88k-dg-dgux${UNAME_RELEASE} - else - echo m88k-dg-dguxbcs${UNAME_RELEASE} - fi - else - echo i586-dg-dgux${UNAME_RELEASE} - fi - exit ;; - M88*:DolphinOS:*:*) # DolphinOS (SVR3) - echo m88k-dolphin-sysv3 - exit ;; - M88*:*:R3*:*) - # Delta 88k system running SVR3 - echo m88k-motorola-sysv3 - exit ;; - XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3) - echo m88k-tektronix-sysv3 - exit ;; - Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD) - echo m68k-tektronix-bsd - exit ;; - *:IRIX*:*:*) - echo mips-sgi-irix`echo ${UNAME_RELEASE}|sed -e 's/-/_/g'` - exit ;; - ????????:AIX?:[12].1:2) # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX. - echo romp-ibm-aix # uname -m gives an 8 hex-code CPU id - exit ;; # Note that: echo "'`uname -s`'" gives 'AIX ' - i*86:AIX:*:*) - echo i386-ibm-aix - exit ;; - ia64:AIX:*:*) - if [ -x /usr/bin/oslevel ] ; then - IBM_REV=`/usr/bin/oslevel` - else - IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE} - fi - echo ${UNAME_MACHINE}-ibm-aix${IBM_REV} - exit ;; - *:AIX:2:3) - if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then - eval $set_cc_for_build - sed 's/^ //' << EOF >$dummy.c - #include - - main() - { - if (!__power_pc()) - exit(1); - puts("powerpc-ibm-aix3.2.5"); - exit(0); - } -EOF - if $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy` - then - echo "$SYSTEM_NAME" - else - echo rs6000-ibm-aix3.2.5 - fi - elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then - echo rs6000-ibm-aix3.2.4 - else - echo rs6000-ibm-aix3.2 - fi - exit ;; - *:AIX:*:[45]) - IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'` - if /usr/sbin/lsattr -El ${IBM_CPU_ID} | grep ' POWER' >/dev/null 2>&1; then - IBM_ARCH=rs6000 - else - IBM_ARCH=powerpc - fi - if [ -x /usr/bin/oslevel ] ; then - IBM_REV=`/usr/bin/oslevel` - else - IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE} - fi - echo ${IBM_ARCH}-ibm-aix${IBM_REV} - exit ;; - *:AIX:*:*) - echo rs6000-ibm-aix - exit ;; - ibmrt:4.4BSD:*|romp-ibm:BSD:*) - echo romp-ibm-bsd4.4 - exit ;; - ibmrt:*BSD:*|romp-ibm:BSD:*) # covers RT/PC BSD and - echo romp-ibm-bsd${UNAME_RELEASE} # 4.3 with uname added to - exit ;; # report: romp-ibm BSD 4.3 - *:BOSX:*:*) - echo rs6000-bull-bosx - exit ;; - DPX/2?00:B.O.S.:*:*) - echo m68k-bull-sysv3 - exit ;; - 9000/[34]??:4.3bsd:1.*:*) - echo m68k-hp-bsd - exit ;; - hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*) - echo m68k-hp-bsd4.4 - exit ;; - 9000/[34678]??:HP-UX:*:*) - HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'` - case "${UNAME_MACHINE}" in - 9000/31? ) HP_ARCH=m68000 ;; - 9000/[34]?? ) HP_ARCH=m68k ;; - 9000/[678][0-9][0-9]) - if [ -x /usr/bin/getconf ]; then - sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null` - sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null` - case "${sc_cpu_version}" in - 523) HP_ARCH="hppa1.0" ;; # CPU_PA_RISC1_0 - 528) HP_ARCH="hppa1.1" ;; # CPU_PA_RISC1_1 - 532) # CPU_PA_RISC2_0 - case "${sc_kernel_bits}" in - 32) HP_ARCH="hppa2.0n" ;; - 64) HP_ARCH="hppa2.0w" ;; - '') HP_ARCH="hppa2.0" ;; # HP-UX 10.20 - esac ;; - esac - fi - if [ "${HP_ARCH}" = "" ]; then - eval $set_cc_for_build - sed 's/^ //' << EOF >$dummy.c - - #define _HPUX_SOURCE - #include - #include - - int main () - { - #if defined(_SC_KERNEL_BITS) - long bits = sysconf(_SC_KERNEL_BITS); - #endif - long cpu = sysconf (_SC_CPU_VERSION); - - switch (cpu) - { - case CPU_PA_RISC1_0: puts ("hppa1.0"); break; - case CPU_PA_RISC1_1: puts ("hppa1.1"); break; - case CPU_PA_RISC2_0: - #if defined(_SC_KERNEL_BITS) - switch (bits) - { - case 64: puts ("hppa2.0w"); break; - case 32: puts ("hppa2.0n"); break; - default: puts ("hppa2.0"); break; - } break; - #else /* !defined(_SC_KERNEL_BITS) */ - puts ("hppa2.0"); break; - #endif - default: puts ("hppa1.0"); break; - } - exit (0); - } -EOF - (CCOPTS= $CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null) && HP_ARCH=`$dummy` - test -z "$HP_ARCH" && HP_ARCH=hppa - fi ;; - esac - if [ ${HP_ARCH} = "hppa2.0w" ] - then - eval $set_cc_for_build - - # hppa2.0w-hp-hpux* has a 64-bit kernel and a compiler generating - # 32-bit code. hppa64-hp-hpux* has the same kernel and a compiler - # generating 64-bit code. GNU and HP use different nomenclature: - # - # $ CC_FOR_BUILD=cc ./config.guess - # => hppa2.0w-hp-hpux11.23 - # $ CC_FOR_BUILD="cc +DA2.0w" ./config.guess - # => hppa64-hp-hpux11.23 - - if echo __LP64__ | (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) | - grep __LP64__ >/dev/null - then - HP_ARCH="hppa2.0w" - else - HP_ARCH="hppa64" - fi - fi - echo ${HP_ARCH}-hp-hpux${HPUX_REV} - exit ;; - ia64:HP-UX:*:*) - HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'` - echo ia64-hp-hpux${HPUX_REV} - exit ;; - 3050*:HI-UX:*:*) - eval $set_cc_for_build - sed 's/^ //' << EOF >$dummy.c - #include - int - main () - { - long cpu = sysconf (_SC_CPU_VERSION); - /* The order matters, because CPU_IS_HP_MC68K erroneously returns - true for CPU_PA_RISC1_0. CPU_IS_PA_RISC returns correct - results, however. */ - if (CPU_IS_PA_RISC (cpu)) - { - switch (cpu) - { - case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break; - case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break; - case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break; - default: puts ("hppa-hitachi-hiuxwe2"); break; - } - } - else if (CPU_IS_HP_MC68K (cpu)) - puts ("m68k-hitachi-hiuxwe2"); - else puts ("unknown-hitachi-hiuxwe2"); - exit (0); - } -EOF - $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy` && - { echo "$SYSTEM_NAME"; exit; } - echo unknown-hitachi-hiuxwe2 - exit ;; - 9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:* ) - echo hppa1.1-hp-bsd - exit ;; - 9000/8??:4.3bsd:*:*) - echo hppa1.0-hp-bsd - exit ;; - *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*) - echo hppa1.0-hp-mpeix - exit ;; - hp7??:OSF1:*:* | hp8?[79]:OSF1:*:* ) - echo hppa1.1-hp-osf - exit ;; - hp8??:OSF1:*:*) - echo hppa1.0-hp-osf - exit ;; - i*86:OSF1:*:*) - if [ -x /usr/sbin/sysversion ] ; then - echo ${UNAME_MACHINE}-unknown-osf1mk - else - echo ${UNAME_MACHINE}-unknown-osf1 - fi - exit ;; - parisc*:Lites*:*:*) - echo hppa1.1-hp-lites - exit ;; - C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*) - echo c1-convex-bsd - exit ;; - C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*) - if getsysinfo -f scalar_acc - then echo c32-convex-bsd - else echo c2-convex-bsd - fi - exit ;; - C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*) - echo c34-convex-bsd - exit ;; - C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*) - echo c38-convex-bsd - exit ;; - C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*) - echo c4-convex-bsd - exit ;; - CRAY*Y-MP:*:*:*) - echo ymp-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' - exit ;; - CRAY*[A-Z]90:*:*:*) - echo ${UNAME_MACHINE}-cray-unicos${UNAME_RELEASE} \ - | sed -e 's/CRAY.*\([A-Z]90\)/\1/' \ - -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \ - -e 's/\.[^.]*$/.X/' - exit ;; - CRAY*TS:*:*:*) - echo t90-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' - exit ;; - CRAY*T3E:*:*:*) - echo alphaev5-cray-unicosmk${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' - exit ;; - CRAY*SV1:*:*:*) - echo sv1-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' - exit ;; - *:UNICOS/mp:*:*) - echo craynv-cray-unicosmp${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' - exit ;; - F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*) - FUJITSU_PROC=`uname -m | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'` - FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'` - FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'` - echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}" - exit ;; - 5000:UNIX_System_V:4.*:*) - FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'` - FUJITSU_REL=`echo ${UNAME_RELEASE} | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/ /_/'` - echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}" - exit ;; - i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*) - echo ${UNAME_MACHINE}-pc-bsdi${UNAME_RELEASE} - exit ;; - sparc*:BSD/OS:*:*) - echo sparc-unknown-bsdi${UNAME_RELEASE} - exit ;; - *:BSD/OS:*:*) - echo ${UNAME_MACHINE}-unknown-bsdi${UNAME_RELEASE} - exit ;; - *:FreeBSD:*:*) - case ${UNAME_MACHINE} in - pc98) - echo i386-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;; - amd64) - echo x86_64-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;; - *) - echo ${UNAME_MACHINE}-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;; - esac - exit ;; - i*:CYGWIN*:*) - echo ${UNAME_MACHINE}-pc-cygwin - exit ;; - *:MINGW*:*) - echo ${UNAME_MACHINE}-pc-mingw32 - exit ;; - i*:windows32*:*) - # uname -m includes "-pc" on this system. - echo ${UNAME_MACHINE}-mingw32 - exit ;; - i*:PW*:*) - echo ${UNAME_MACHINE}-pc-pw32 - exit ;; - *:Interix*:[3456]*) - case ${UNAME_MACHINE} in - x86) - echo i586-pc-interix${UNAME_RELEASE} - exit ;; - EM64T | authenticamd) - echo x86_64-unknown-interix${UNAME_RELEASE} - exit ;; - esac ;; - [345]86:Windows_95:* | [345]86:Windows_98:* | [345]86:Windows_NT:*) - echo i${UNAME_MACHINE}-pc-mks - exit ;; - i*:Windows_NT*:* | Pentium*:Windows_NT*:*) - # How do we know it's Interix rather than the generic POSIX subsystem? - # It also conflicts with pre-2.0 versions of AT&T UWIN. Should we - # UNAME_MACHINE based on the output of uname instead of i386? - echo i586-pc-interix - exit ;; - i*:UWIN*:*) - echo ${UNAME_MACHINE}-pc-uwin - exit ;; - amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*) - echo x86_64-unknown-cygwin - exit ;; - p*:CYGWIN*:*) - echo powerpcle-unknown-cygwin - exit ;; - prep*:SunOS:5.*:*) - echo powerpcle-unknown-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` - exit ;; - *:GNU:*:*) - # the GNU system - echo `echo ${UNAME_MACHINE}|sed -e 's,[-/].*$,,'`-unknown-gnu`echo ${UNAME_RELEASE}|sed -e 's,/.*$,,'` - exit ;; - *:GNU/*:*:*) - # other systems with GNU libc and userland - echo ${UNAME_MACHINE}-unknown-`echo ${UNAME_SYSTEM} | sed 's,^[^/]*/,,' | tr '[A-Z]' '[a-z]'``echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`-gnu - exit ;; - i*86:Minix:*:*) - echo ${UNAME_MACHINE}-pc-minix - exit ;; - arm*:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-${LIBC} - exit ;; - avr32*:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-${LIBC} - exit ;; - cris:Linux:*:*) - echo cris-axis-linux-${LIBC} - exit ;; - crisv32:Linux:*:*) - echo crisv32-axis-linux-${LIBC} - exit ;; - frv:Linux:*:*) - echo frv-unknown-linux-${LIBC} - exit ;; - ia64:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-${LIBC} - exit ;; - m32r*:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-${LIBC} - exit ;; - m68*:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-${LIBC} - exit ;; - mips:Linux:*:*) - eval $set_cc_for_build - sed 's/^ //' << EOF >$dummy.c - #undef CPU - #undef mips - #undef mipsel - #if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL) - CPU=mipsel - #else - #if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB) - CPU=mips - #else - CPU= - #endif - #endif -EOF - eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n ' - /^CPU/{ - s: ::g - p - }'`" - test x"${CPU}" != x && { echo "${CPU}-unknown-linux-${LIBC}"; exit; } - ;; - mips64:Linux:*:*) - eval $set_cc_for_build - sed 's/^ //' << EOF >$dummy.c - #undef CPU - #undef mips64 - #undef mips64el - #if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL) - CPU=mips64el - #else - #if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB) - CPU=mips64 - #else - CPU= - #endif - #endif -EOF - eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n ' - /^CPU/{ - s: ::g - p - }'`" - test x"${CPU}" != x && { echo "${CPU}-unknown-linux-${LIBC}"; exit; } - ;; - or32:Linux:*:*) - echo or32-unknown-linux-${LIBC} - exit ;; - ppc:Linux:*:*) - echo powerpc-unknown-linux-${LIBC} - exit ;; - ppc64:Linux:*:*) - echo powerpc64-unknown-linux-${LIBC} - exit ;; - alpha:Linux:*:*) - case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in - EV5) UNAME_MACHINE=alphaev5 ;; - EV56) UNAME_MACHINE=alphaev56 ;; - PCA56) UNAME_MACHINE=alphapca56 ;; - PCA57) UNAME_MACHINE=alphapca56 ;; - EV6) UNAME_MACHINE=alphaev6 ;; - EV67) UNAME_MACHINE=alphaev67 ;; - EV68*) UNAME_MACHINE=alphaev68 ;; - esac - objdump --private-headers /bin/sh | grep ld.so.1 >/dev/null - if test "$?" = 0 ; then LIBC="gnulibc1" ; fi - echo ${UNAME_MACHINE}-unknown-linux-${LIBC} - exit ;; - parisc:Linux:*:* | hppa:Linux:*:*) - # Look for CPU level - case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in - PA7*) echo hppa1.1-unknown-linux-${LIBC} ;; - PA8*) echo hppa2.0-unknown-linux-${LIBC} ;; - *) echo hppa-unknown-linux-${LIBC} ;; - esac - exit ;; - parisc64:Linux:*:* | hppa64:Linux:*:*) - echo hppa64-unknown-linux-${LIBC} - exit ;; - s390:Linux:*:* | s390x:Linux:*:*) - echo ${UNAME_MACHINE}-ibm-linux - exit ;; - sh64*:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-${LIBC} - exit ;; - sh*:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-${LIBC} - exit ;; - sparc:Linux:*:* | sparc64:Linux:*:*) - echo ${UNAME_MACHINE}-unknown-linux-${LIBC} - exit ;; - vax:Linux:*:*) - echo ${UNAME_MACHINE}-dec-linux-${LIBC} - exit ;; - x86_64:Linux:*:*) - echo x86_64-unknown-linux-${LIBC} - exit ;; - xtensa:Linux:*:*) - echo xtensa-unknown-linux-${LIBC} - exit ;; - i*86:Linux:*:*) - # The BFD linker knows what the default object file format is, so - # first see if it will tell us. cd to the root directory to prevent - # problems with other programs or directories called `ld' in the path. - # Set LC_ALL=C to ensure ld outputs messages in English. - ld_supported_targets=`cd /; LC_ALL=C ld --help 2>&1 \ - | sed -ne '/supported targets:/!d - s/[ ][ ]*/ /g - s/.*supported targets: *// - s/ .*// - p'` - case "$ld_supported_targets" in - elf32-i386) - TENTATIVE="${UNAME_MACHINE}-pc-linux-${LIBC}" - ;; - a.out-i386-linux) - echo "${UNAME_MACHINE}-pc-linux-${LIBC}aout" - exit ;; - coff-i386) - echo "${UNAME_MACHINE}-pc-linux-${LIBC}coff" - exit ;; - "") - # Either a pre-BFD a.out linker (linux-gnuoldld) or - # one that does not give us useful --help. - echo "${UNAME_MACHINE}-pc-linux-${LIBC}oldld" - exit ;; - esac - # This should get integrated into the C code below, but now we hack - if [ "$LIBC" != "gnu" ] ; then echo "$TENTATIVE" && exit 0 ; fi - # Determine whether the default compiler is a.out or elf - eval $set_cc_for_build - sed 's/^ //' << EOF >$dummy.c - #include - #ifdef __ELF__ - # ifdef __GLIBC__ - # if __GLIBC__ >= 2 - LIBC=gnu - # else - LIBC=gnulibc1 - # endif - # else - LIBC=gnulibc1 - # endif - #else - #if defined(__INTEL_COMPILER) || defined(__PGI) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) - LIBC=gnu - #else - LIBC=gnuaout - #endif - #endif - #ifdef __dietlibc__ - LIBC=dietlibc - #endif -EOF - eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n ' - /^LIBC/{ - s: ::g - p - }'`" - test x"${LIBC}" != x && { - echo "${UNAME_MACHINE}-pc-linux-${LIBC}" - exit - } - test x"${TENTATIVE}" != x && { echo "${TENTATIVE}"; exit; } - ;; - i*86:DYNIX/ptx:4*:*) - # ptx 4.0 does uname -s correctly, with DYNIX/ptx in there. - # earlier versions are messed up and put the nodename in both - # sysname and nodename. - echo i386-sequent-sysv4 - exit ;; - i*86:UNIX_SV:4.2MP:2.*) - # Unixware is an offshoot of SVR4, but it has its own version - # number series starting with 2... - # I am not positive that other SVR4 systems won't match this, - # I just have to hope. -- rms. - # Use sysv4.2uw... so that sysv4* matches it. - echo ${UNAME_MACHINE}-pc-sysv4.2uw${UNAME_VERSION} - exit ;; - i*86:OS/2:*:*) - # If we were able to find `uname', then EMX Unix compatibility - # is probably installed. - echo ${UNAME_MACHINE}-pc-os2-emx - exit ;; - i*86:XTS-300:*:STOP) - echo ${UNAME_MACHINE}-unknown-stop - exit ;; - i*86:atheos:*:*) - echo ${UNAME_MACHINE}-unknown-atheos - exit ;; - i*86:syllable:*:*) - echo ${UNAME_MACHINE}-pc-syllable - exit ;; - i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.0*:*) - echo i386-unknown-lynxos${UNAME_RELEASE} - exit ;; - i*86:*DOS:*:*) - echo ${UNAME_MACHINE}-pc-msdosdjgpp - exit ;; - i*86:*:4.*:* | i*86:SYSTEM_V:4.*:*) - UNAME_REL=`echo ${UNAME_RELEASE} | sed 's/\/MP$//'` - if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then - echo ${UNAME_MACHINE}-univel-sysv${UNAME_REL} - else - echo ${UNAME_MACHINE}-pc-sysv${UNAME_REL} - fi - exit ;; - i*86:*:5:[678]*) - # UnixWare 7.x, OpenUNIX and OpenServer 6. - case `/bin/uname -X | grep "^Machine"` in - *486*) UNAME_MACHINE=i486 ;; - *Pentium) UNAME_MACHINE=i586 ;; - *Pent*|*Celeron) UNAME_MACHINE=i686 ;; - esac - echo ${UNAME_MACHINE}-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION} - exit ;; - i*86:*:3.2:*) - if test -f /usr/options/cb.name; then - UNAME_REL=`sed -n 's/.*Version //p' /dev/null >/dev/null ; then - UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')` - (/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486 - (/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \ - && UNAME_MACHINE=i586 - (/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \ - && UNAME_MACHINE=i686 - (/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \ - && UNAME_MACHINE=i686 - echo ${UNAME_MACHINE}-pc-sco$UNAME_REL - else - echo ${UNAME_MACHINE}-pc-sysv32 - fi - exit ;; - pc:*:*:*) - # Left here for compatibility: - # uname -m prints for DJGPP always 'pc', but it prints nothing about - # the processor, so we play safe by assuming i386. - echo i386-pc-msdosdjgpp - exit ;; - Intel:Mach:3*:*) - echo i386-pc-mach3 - exit ;; - paragon:*:*:*) - echo i860-intel-osf1 - exit ;; - i860:*:4.*:*) # i860-SVR4 - if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then - echo i860-stardent-sysv${UNAME_RELEASE} # Stardent Vistra i860-SVR4 - else # Add other i860-SVR4 vendors below as they are discovered. - echo i860-unknown-sysv${UNAME_RELEASE} # Unknown i860-SVR4 - fi - exit ;; - mini*:CTIX:SYS*5:*) - # "miniframe" - echo m68010-convergent-sysv - exit ;; - mc68k:UNIX:SYSTEM5:3.51m) - echo m68k-convergent-sysv - exit ;; - M680?0:D-NIX:5.3:*) - echo m68k-diab-dnix - exit ;; - M68*:*:R3V[5678]*:*) - test -r /sysV68 && { echo 'm68k-motorola-sysv'; exit; } ;; - 3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0) - OS_REL='' - test -r /etc/.relid \ - && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid` - /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ - && { echo i486-ncr-sysv4.3${OS_REL}; exit; } - /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \ - && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;; - 3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*) - /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ - && { echo i486-ncr-sysv4; exit; } ;; - m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*) - echo m68k-unknown-lynxos${UNAME_RELEASE} - exit ;; - mc68030:UNIX_System_V:4.*:*) - echo m68k-atari-sysv4 - exit ;; - TSUNAMI:LynxOS:2.*:*) - echo sparc-unknown-lynxos${UNAME_RELEASE} - exit ;; - rs6000:LynxOS:2.*:*) - echo rs6000-unknown-lynxos${UNAME_RELEASE} - exit ;; - PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.0*:*) - echo powerpc-unknown-lynxos${UNAME_RELEASE} - exit ;; - SM[BE]S:UNIX_SV:*:*) - echo mips-dde-sysv${UNAME_RELEASE} - exit ;; - RM*:ReliantUNIX-*:*:*) - echo mips-sni-sysv4 - exit ;; - RM*:SINIX-*:*:*) - echo mips-sni-sysv4 - exit ;; - *:SINIX-*:*:*) - if uname -p 2>/dev/null >/dev/null ; then - UNAME_MACHINE=`(uname -p) 2>/dev/null` - echo ${UNAME_MACHINE}-sni-sysv4 - else - echo ns32k-sni-sysv - fi - exit ;; - PENTIUM:*:4.0*:*) # Unisys `ClearPath HMP IX 4000' SVR4/MP effort - # says - echo i586-unisys-sysv4 - exit ;; - *:UNIX_System_V:4*:FTX*) - # From Gerald Hewes . - # How about differentiating between stratus architectures? -djm - echo hppa1.1-stratus-sysv4 - exit ;; - *:*:*:FTX*) - # From seanf@swdc.stratus.com. - echo i860-stratus-sysv4 - exit ;; - i*86:VOS:*:*) - # From Paul.Green@stratus.com. - echo ${UNAME_MACHINE}-stratus-vos - exit ;; - *:VOS:*:*) - # From Paul.Green@stratus.com. - echo hppa1.1-stratus-vos - exit ;; - mc68*:A/UX:*:*) - echo m68k-apple-aux${UNAME_RELEASE} - exit ;; - news*:NEWS-OS:6*:*) - echo mips-sony-newsos6 - exit ;; - R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*) - if [ -d /usr/nec ]; then - echo mips-nec-sysv${UNAME_RELEASE} - else - echo mips-unknown-sysv${UNAME_RELEASE} - fi - exit ;; - BeBox:BeOS:*:*) # BeOS running on hardware made by Be, PPC only. - echo powerpc-be-beos - exit ;; - BeMac:BeOS:*:*) # BeOS running on Mac or Mac clone, PPC only. - echo powerpc-apple-beos - exit ;; - BePC:BeOS:*:*) # BeOS running on Intel PC compatible. - echo i586-pc-beos - exit ;; - SX-4:SUPER-UX:*:*) - echo sx4-nec-superux${UNAME_RELEASE} - exit ;; - SX-5:SUPER-UX:*:*) - echo sx5-nec-superux${UNAME_RELEASE} - exit ;; - SX-6:SUPER-UX:*:*) - echo sx6-nec-superux${UNAME_RELEASE} - exit ;; - SX-7:SUPER-UX:*:*) - echo sx7-nec-superux${UNAME_RELEASE} - exit ;; - SX-8:SUPER-UX:*:*) - echo sx8-nec-superux${UNAME_RELEASE} - exit ;; - SX-8R:SUPER-UX:*:*) - echo sx8r-nec-superux${UNAME_RELEASE} - exit ;; - Power*:Rhapsody:*:*) - echo powerpc-apple-rhapsody${UNAME_RELEASE} - exit ;; - *:Rhapsody:*:*) - echo ${UNAME_MACHINE}-apple-rhapsody${UNAME_RELEASE} - exit ;; - *:Darwin:*:*) - UNAME_PROCESSOR=`uname -p` || UNAME_PROCESSOR=unknown - case $UNAME_PROCESSOR in - unknown) UNAME_PROCESSOR=powerpc ;; - esac - echo ${UNAME_PROCESSOR}-apple-darwin${UNAME_RELEASE} - exit ;; - *:procnto*:*:* | *:QNX:[0123456789]*:*) - UNAME_PROCESSOR=`uname -p` - if test "$UNAME_PROCESSOR" = "x86"; then - UNAME_PROCESSOR=i386 - UNAME_MACHINE=pc - fi - echo ${UNAME_PROCESSOR}-${UNAME_MACHINE}-nto-qnx${UNAME_RELEASE} - exit ;; - *:QNX:*:4*) - echo i386-pc-qnx - exit ;; - NSE-?:NONSTOP_KERNEL:*:*) - echo nse-tandem-nsk${UNAME_RELEASE} - exit ;; - NSR-?:NONSTOP_KERNEL:*:*) - echo nsr-tandem-nsk${UNAME_RELEASE} - exit ;; - *:NonStop-UX:*:*) - echo mips-compaq-nonstopux - exit ;; - BS2000:POSIX*:*:*) - echo bs2000-siemens-sysv - exit ;; - DS/*:UNIX_System_V:*:*) - echo ${UNAME_MACHINE}-${UNAME_SYSTEM}-${UNAME_RELEASE} - exit ;; - *:Plan9:*:*) - # "uname -m" is not consistent, so use $cputype instead. 386 - # is converted to i386 for consistency with other x86 - # operating systems. - if test "$cputype" = "386"; then - UNAME_MACHINE=i386 - else - UNAME_MACHINE="$cputype" - fi - echo ${UNAME_MACHINE}-unknown-plan9 - exit ;; - *:TOPS-10:*:*) - echo pdp10-unknown-tops10 - exit ;; - *:TENEX:*:*) - echo pdp10-unknown-tenex - exit ;; - KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*) - echo pdp10-dec-tops20 - exit ;; - XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*) - echo pdp10-xkl-tops20 - exit ;; - *:TOPS-20:*:*) - echo pdp10-unknown-tops20 - exit ;; - *:ITS:*:*) - echo pdp10-unknown-its - exit ;; - SEI:*:*:SEIUX) - echo mips-sei-seiux${UNAME_RELEASE} - exit ;; - *:DragonFly:*:*) - echo ${UNAME_MACHINE}-unknown-dragonfly`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` - exit ;; - *:*VMS:*:*) - UNAME_MACHINE=`(uname -p) 2>/dev/null` - case "${UNAME_MACHINE}" in - A*) echo alpha-dec-vms ; exit ;; - I*) echo ia64-dec-vms ; exit ;; - V*) echo vax-dec-vms ; exit ;; - esac ;; - *:XENIX:*:SysV) - echo i386-pc-xenix - exit ;; - i*86:skyos:*:*) - echo ${UNAME_MACHINE}-pc-skyos`echo ${UNAME_RELEASE}` | sed -e 's/ .*$//' - exit ;; - i*86:rdos:*:*) - echo ${UNAME_MACHINE}-pc-rdos - exit ;; -esac - -#echo '(No uname command or uname output not recognized.)' 1>&2 -#echo "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" 1>&2 - -eval $set_cc_for_build -cat >$dummy.c < -# include -#endif -main () -{ -#if defined (sony) -#if defined (MIPSEB) - /* BFD wants "bsd" instead of "newsos". Perhaps BFD should be changed, - I don't know.... */ - printf ("mips-sony-bsd\n"); exit (0); -#else -#include - printf ("m68k-sony-newsos%s\n", -#ifdef NEWSOS4 - "4" -#else - "" -#endif - ); exit (0); -#endif -#endif - -#if defined (__arm) && defined (__acorn) && defined (__unix) - printf ("arm-acorn-riscix\n"); exit (0); -#endif - -#if defined (hp300) && !defined (hpux) - printf ("m68k-hp-bsd\n"); exit (0); -#endif - -#if defined (NeXT) -#if !defined (__ARCHITECTURE__) -#define __ARCHITECTURE__ "m68k" -#endif - int version; - version=`(hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null`; - if (version < 4) - printf ("%s-next-nextstep%d\n", __ARCHITECTURE__, version); - else - printf ("%s-next-openstep%d\n", __ARCHITECTURE__, version); - exit (0); -#endif - -#if defined (MULTIMAX) || defined (n16) -#if defined (UMAXV) - printf ("ns32k-encore-sysv\n"); exit (0); -#else -#if defined (CMU) - printf ("ns32k-encore-mach\n"); exit (0); -#else - printf ("ns32k-encore-bsd\n"); exit (0); -#endif -#endif -#endif - -#if defined (__386BSD__) - printf ("i386-pc-bsd\n"); exit (0); -#endif - -#if defined (sequent) -#if defined (i386) - printf ("i386-sequent-dynix\n"); exit (0); -#endif -#if defined (ns32000) - printf ("ns32k-sequent-dynix\n"); exit (0); -#endif -#endif - -#if defined (_SEQUENT_) - struct utsname un; - - uname(&un); - - if (strncmp(un.version, "V2", 2) == 0) { - printf ("i386-sequent-ptx2\n"); exit (0); - } - if (strncmp(un.version, "V1", 2) == 0) { /* XXX is V1 correct? */ - printf ("i386-sequent-ptx1\n"); exit (0); - } - printf ("i386-sequent-ptx\n"); exit (0); - -#endif - -#if defined (vax) -# if !defined (ultrix) -# include -# if defined (BSD) -# if BSD == 43 - printf ("vax-dec-bsd4.3\n"); exit (0); -# else -# if BSD == 199006 - printf ("vax-dec-bsd4.3reno\n"); exit (0); -# else - printf ("vax-dec-bsd\n"); exit (0); -# endif -# endif -# else - printf ("vax-dec-bsd\n"); exit (0); -# endif -# else - printf ("vax-dec-ultrix\n"); exit (0); -# endif -#endif - -#if defined (alliant) && defined (i860) - printf ("i860-alliant-bsd\n"); exit (0); -#endif - - exit (1); -} -EOF - -$CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null && SYSTEM_NAME=`$dummy` && - { echo "$SYSTEM_NAME"; exit; } - -# Apollos put the system type in the environment. - -test -d /usr/apollo && { echo ${ISP}-apollo-${SYSTYPE}; exit; } - -# Convex versions that predate uname can use getsysinfo(1) - -if [ -x /usr/convex/getsysinfo ] -then - case `getsysinfo -f cpu_type` in - c1*) - echo c1-convex-bsd - exit ;; - c2*) - if getsysinfo -f scalar_acc - then echo c32-convex-bsd - else echo c2-convex-bsd - fi - exit ;; - c34*) - echo c34-convex-bsd - exit ;; - c38*) - echo c38-convex-bsd - exit ;; - c4*) - echo c4-convex-bsd - exit ;; - esac -fi - -cat >&2 < in order to provide the needed -information to handle your system. - -config.guess timestamp = $timestamp - -uname -m = `(uname -m) 2>/dev/null || echo unknown` -uname -r = `(uname -r) 2>/dev/null || echo unknown` -uname -s = `(uname -s) 2>/dev/null || echo unknown` -uname -v = `(uname -v) 2>/dev/null || echo unknown` - -/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null` -/bin/uname -X = `(/bin/uname -X) 2>/dev/null` - -hostinfo = `(hostinfo) 2>/dev/null` -/bin/universe = `(/bin/universe) 2>/dev/null` -/usr/bin/arch -k = `(/usr/bin/arch -k) 2>/dev/null` -/bin/arch = `(/bin/arch) 2>/dev/null` -/usr/bin/oslevel = `(/usr/bin/oslevel) 2>/dev/null` -/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null` - -UNAME_MACHINE = ${UNAME_MACHINE} -UNAME_RELEASE = ${UNAME_RELEASE} -UNAME_SYSTEM = ${UNAME_SYSTEM} -UNAME_VERSION = ${UNAME_VERSION} -EOF - -exit 1 - -# Local variables: -# eval: (add-hook 'write-file-hooks 'time-stamp) -# time-stamp-start: "timestamp='" -# time-stamp-format: "%:y-%02m-%02d" -# time-stamp-end: "'" -# End: diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/config.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/config.h deleted file mode 100644 index 45cc4dabb9..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/config.h +++ /dev/null @@ -1,108 +0,0 @@ -/* config.h. Generated from config.h.in by configure. */ -/* config.h.in. Generated from configure.ac by autoheader. */ - -/* Define to 1 if you have the header file. */ -#define HAVE_DLFCN_H 1 - -/* Define to 1 if you have the `fdatasync' function. */ -#define HAVE_FDATASYNC 1 - -/* Define to 1 if you have the `gmtime_r' function. */ -#define HAVE_GMTIME_R 1 - -/* Define to 1 if the system has the type `int16_t'. */ -#define HAVE_INT16_T 1 - -/* Define to 1 if the system has the type `int32_t'. */ -#define HAVE_INT32_T 1 - -/* Define to 1 if the system has the type `int64_t'. */ -#define HAVE_INT64_T 1 - -/* Define to 1 if the system has the type `int8_t'. */ -#define HAVE_INT8_T 1 - -/* Define to 1 if the system has the type `intptr_t'. */ -#define HAVE_INTPTR_T 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_INTTYPES_H 1 - -/* Define to 1 if you have the `localtime_r' function. */ -#define HAVE_LOCALTIME_R 1 - -/* Define to 1 if you have the `localtime_s' function. */ -/* #undef HAVE_LOCALTIME_S */ - -/* Define to 1 if you have the header file. */ -#define HAVE_MEMORY_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDINT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STDLIB_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRINGS_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_STRING_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_STAT_H 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_SYS_TYPES_H 1 - -/* Define to 1 if the system has the type `uint16_t'. */ -#define HAVE_UINT16_T 1 - -/* Define to 1 if the system has the type `uint32_t'. */ -#define HAVE_UINT32_T 1 - -/* Define to 1 if the system has the type `uint64_t'. */ -#define HAVE_UINT64_T 1 - -/* Define to 1 if the system has the type `uint8_t'. */ -#define HAVE_UINT8_T 1 - -/* Define to 1 if the system has the type `uintptr_t'. */ -#define HAVE_UINTPTR_T 1 - -/* Define to 1 if you have the header file. */ -#define HAVE_UNISTD_H 1 - -/* Define to 1 if you have the `usleep' function. */ -#define HAVE_USLEEP 1 - -/* Define to 1 if you have the utime() library function. */ -#define HAVE_UTIME 1 - -/* Define to the sub-directory in which libtool stores uninstalled libraries. - */ -#define LT_OBJDIR ".libs/" - -/* Define to the address where bug reports for this package should be sent. */ -#define PACKAGE_BUGREPORT "" - -/* Define to the full name of this package. */ -#define PACKAGE_NAME "sqlite" - -/* Define to the full name and version of this package. */ -#define PACKAGE_STRING "sqlite 3.7.9" - -/* Define to the one symbol short name of this package. */ -#define PACKAGE_TARNAME "sqlite" - -/* Define to the version of this package. */ -#define PACKAGE_VERSION "3.7.9" - -/* Define to 1 if you have the ANSI C header files. */ -#define STDC_HEADERS 1 - -/* Number of bits in a file offset, on hosts where this is settable. */ -/* #undef _FILE_OFFSET_BITS */ - -/* Define for large files, on AIX-style hosts. */ -/* #undef _LARGE_FILES */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/config.h.in b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/config.h.in deleted file mode 100644 index 71938bfa2c..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/config.h.in +++ /dev/null @@ -1,107 +0,0 @@ -/* config.h.in. Generated from configure.ac by autoheader. */ - -/* Define to 1 if you have the header file. */ -#undef HAVE_DLFCN_H - -/* Define to 1 if you have the `fdatasync' function. */ -#undef HAVE_FDATASYNC - -/* Define to 1 if you have the `gmtime_r' function. */ -#undef HAVE_GMTIME_R - -/* Define to 1 if the system has the type `int16_t'. */ -#undef HAVE_INT16_T - -/* Define to 1 if the system has the type `int32_t'. */ -#undef HAVE_INT32_T - -/* Define to 1 if the system has the type `int64_t'. */ -#undef HAVE_INT64_T - -/* Define to 1 if the system has the type `int8_t'. */ -#undef HAVE_INT8_T - -/* Define to 1 if the system has the type `intptr_t'. */ -#undef HAVE_INTPTR_T - -/* Define to 1 if you have the header file. */ -#undef HAVE_INTTYPES_H - -/* Define to 1 if you have the `localtime_r' function. */ -#undef HAVE_LOCALTIME_R - -/* Define to 1 if you have the `localtime_s' function. */ -#undef HAVE_LOCALTIME_S - -/* Define to 1 if you have the header file. */ -#undef HAVE_MEMORY_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_STDINT_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_STDLIB_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_STRINGS_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_STRING_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_SYS_STAT_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_SYS_TYPES_H - -/* Define to 1 if the system has the type `uint16_t'. */ -#undef HAVE_UINT16_T - -/* Define to 1 if the system has the type `uint32_t'. */ -#undef HAVE_UINT32_T - -/* Define to 1 if the system has the type `uint64_t'. */ -#undef HAVE_UINT64_T - -/* Define to 1 if the system has the type `uint8_t'. */ -#undef HAVE_UINT8_T - -/* Define to 1 if the system has the type `uintptr_t'. */ -#undef HAVE_UINTPTR_T - -/* Define to 1 if you have the header file. */ -#undef HAVE_UNISTD_H - -/* Define to 1 if you have the `usleep' function. */ -#undef HAVE_USLEEP - -/* Define to 1 if you have the utime() library function. */ -#undef HAVE_UTIME - -/* Define to the sub-directory in which libtool stores uninstalled libraries. - */ -#undef LT_OBJDIR - -/* Define to the address where bug reports for this package should be sent. */ -#undef PACKAGE_BUGREPORT - -/* Define to the full name of this package. */ -#undef PACKAGE_NAME - -/* Define to the full name and version of this package. */ -#undef PACKAGE_STRING - -/* Define to the one symbol short name of this package. */ -#undef PACKAGE_TARNAME - -/* Define to the version of this package. */ -#undef PACKAGE_VERSION - -/* Define to 1 if you have the ANSI C header files. */ -#undef STDC_HEADERS - -/* Number of bits in a file offset, on hosts where this is settable. */ -#undef _FILE_OFFSET_BITS - -/* Define for large files, on AIX-style hosts. */ -#undef _LARGE_FILES diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/config.sub b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/config.sub deleted file mode 100644 index d3f0dbdc9f..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/config.sub +++ /dev/null @@ -1,1644 +0,0 @@ -#! /bin/sh -# Configuration validation subroutine script. -# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, -# 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, -# Inc. - -timestamp='2007-06-28' - -# This file is (in principle) common to ALL GNU software. -# The presence of a machine in this file suggests that SOME GNU software -# can handle that machine. It does not imply ALL GNU software can. -# -# This file is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2 of the License, or -# (at your option) any later version. -# -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program; if not, write to the Free Software -# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA -# 02110-1301, USA. -# -# As a special exception to the GNU General Public License, if you -# distribute this file as part of a program that contains a -# configuration script generated by Autoconf, you may include it under -# the same distribution terms that you use for the rest of that program. - - -# Please send patches to . Submit a context -# diff and a properly formatted ChangeLog entry. -# -# Configuration subroutine to validate and canonicalize a configuration type. -# Supply the specified configuration type as an argument. -# If it is invalid, we print an error message on stderr and exit with code 1. -# Otherwise, we print the canonical config type on stdout and succeed. - -# This file is supposed to be the same for all GNU packages -# and recognize all the CPU types, system types and aliases -# that are meaningful with *any* GNU software. -# Each package is responsible for reporting which valid configurations -# it does not support. The user should be able to distinguish -# a failure to support a valid configuration from a meaningless -# configuration. - -# The goal of this file is to map all the various variations of a given -# machine specification into a single specification in the form: -# CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM -# or in some cases, the newer four-part form: -# CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM -# It is wrong to echo any other type of specification. - -me=`echo "$0" | sed -e 's,.*/,,'` - -usage="\ -Usage: $0 [OPTION] CPU-MFR-OPSYS - $0 [OPTION] ALIAS - -Canonicalize a configuration name. - -Operation modes: - -h, --help print this help, then exit - -t, --time-stamp print date of last modification, then exit - -v, --version print version number, then exit - -Report bugs and patches to ." - -version="\ -GNU config.sub ($timestamp) - -Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 -Free Software Foundation, Inc. - -This is free software; see the source for copying conditions. There is NO -warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE." - -help=" -Try \`$me --help' for more information." - -# Parse command line -while test $# -gt 0 ; do - case $1 in - --time-stamp | --time* | -t ) - echo "$timestamp" ; exit ;; - --version | -v ) - echo "$version" ; exit ;; - --help | --h* | -h ) - echo "$usage"; exit ;; - -- ) # Stop option processing - shift; break ;; - - ) # Use stdin as input. - break ;; - -* ) - echo "$me: invalid option $1$help" - exit 1 ;; - - *local*) - # First pass through any local machine types. - echo $1 - exit ;; - - * ) - break ;; - esac -done - -case $# in - 0) echo "$me: missing argument$help" >&2 - exit 1;; - 1) ;; - *) echo "$me: too many arguments$help" >&2 - exit 1;; -esac - -# Separate what the user gave into CPU-COMPANY and OS or KERNEL-OS (if any). -# Here we must recognize all the valid KERNEL-OS combinations. -maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'` -case $maybe_os in - nto-qnx* | linux-gnu* | linux-dietlibc | linux-newlib* | linux-uclibc* | \ - uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* | \ - storm-chaos* | os2-emx* | rtmk-nova*) - os=-$maybe_os - basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'` - ;; - *) - basic_machine=`echo $1 | sed 's/-[^-]*$//'` - if [ $basic_machine != $1 ] - then os=`echo $1 | sed 's/.*-/-/'` - else os=; fi - ;; -esac - -### Let's recognize common machines as not being operating systems so -### that things like config.sub decstation-3100 work. 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- -sco5) - os=-sco3.2v5 - basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` - ;; - -sco4) - os=-sco3.2v4 - basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` - ;; - -sco3.2.[4-9]*) - os=`echo $os | sed -e 's/sco3.2./sco3.2v/'` - basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` - ;; - -sco3.2v[4-9]*) - # Don't forget version if it is 3.2v4 or newer. - basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` - ;; - -sco5v6*) - # Don't forget version if it is 3.2v4 or newer. - basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` - ;; - -sco*) - os=-sco3.2v2 - basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` - ;; - -udk*) - basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` - ;; - -isc) - os=-isc2.2 - basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` - ;; - -clix*) - basic_machine=clipper-intergraph - ;; - -isc*) - basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` - ;; - -lynx*) - os=-lynxos - ;; - -ptx*) - basic_machine=`echo $1 | sed -e 's/86-.*/86-sequent/'` - ;; - -windowsnt*) - os=`echo $os | sed -e 's/windowsnt/winnt/'` - ;; - -psos*) - os=-psos - ;; - -mint | -mint[0-9]*) - basic_machine=m68k-atari - os=-mint - ;; -esac - -# Decode aliases for certain CPU-COMPANY combinations. -case $basic_machine in - # Recognize the basic CPU types without company name. - # Some are omitted here because they have special meanings below. - 1750a | 580 \ - | a29k \ - | alpha | alphaev[4-8] | alphaev56 | alphaev6[78] | alphapca5[67] \ - | alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \ - | am33_2.0 \ - | arc | arm | arm[bl]e | arme[lb] | armv[2345] | armv[345][lb] | avr | avr32 \ - | bfin \ - | c4x | clipper \ - | d10v | d30v | dlx | dsp16xx | dvp \ - | fido | fr30 | frv \ - | h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \ - | i370 | i860 | i960 | ia64 \ - | ip2k | iq2000 \ - | m32c | m32r | m32rle | m68000 | m68k | m88k \ - | maxq | mb | microblaze | mcore | mep \ - | mips | mipsbe | mipseb | mipsel | mipsle \ - | mips16 \ - | mips64 | mips64el \ - | mips64vr | mips64vrel \ - | mips64orion | mips64orionel \ - | mips64vr4100 | mips64vr4100el \ - | mips64vr4300 | mips64vr4300el \ - | mips64vr5000 | mips64vr5000el \ - | mips64vr5900 | mips64vr5900el \ - | mipsisa32 | mipsisa32el \ - | mipsisa32r2 | mipsisa32r2el \ - | mipsisa64 | mipsisa64el \ - | mipsisa64r2 | mipsisa64r2el \ - | mipsisa64sb1 | mipsisa64sb1el \ - | mipsisa64sr71k | mipsisa64sr71kel \ - | mipstx39 | mipstx39el \ - | mn10200 | mn10300 \ - | mt \ - | msp430 \ - | nios | nios2 \ - | ns16k | ns32k \ - | or32 \ - | pdp10 | pdp11 | pj | pjl \ - | powerpc | powerpc64 | powerpc64le | powerpcle | ppcbe \ - | pyramid \ - | score \ - | sh | sh[1234] | sh[24]a | sh[24]a*eb | sh[23]e | sh[34]eb | sheb | shbe | shle | sh[1234]le | sh3ele \ - | sh64 | sh64le \ - | sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet | sparclite \ - | sparcv8 | sparcv9 | sparcv9b | sparcv9v \ - | spu | strongarm \ - | tahoe | thumb | tic4x | tic80 | tron \ - | v850 | v850e \ - | we32k \ - | x86 | xc16x | xscale | xscalee[bl] | xstormy16 | xtensa \ - | z8k) - basic_machine=$basic_machine-unknown - ;; - m6811 | m68hc11 | m6812 | m68hc12) - # Motorola 68HC11/12. - basic_machine=$basic_machine-unknown - os=-none - ;; - m88110 | m680[12346]0 | m683?2 | m68360 | m5200 | v70 | w65 | z8k) - ;; - ms1) - basic_machine=mt-unknown - ;; - - # We use `pc' rather than `unknown' - # because (1) that's what they normally are, and - # (2) the word "unknown" tends to confuse beginning users. - i*86 | x86_64) - basic_machine=$basic_machine-pc - ;; - # Object if more than one company name word. - *-*-*) - echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2 - exit 1 - ;; - # Recognize the basic CPU types with company name. - 580-* \ - | a29k-* \ - | alpha-* | alphaev[4-8]-* | alphaev56-* | alphaev6[78]-* \ - | alpha64-* | alpha64ev[4-8]-* | alpha64ev56-* | alpha64ev6[78]-* \ - | alphapca5[67]-* | alpha64pca5[67]-* | arc-* \ - | arm-* | armbe-* | armle-* | armeb-* | armv*-* \ - | avr-* | avr32-* \ - | bfin-* | bs2000-* \ - | c[123]* | c30-* | [cjt]90-* | c4x-* | c54x-* | c55x-* | c6x-* \ - | clipper-* | craynv-* | cydra-* \ - | d10v-* | d30v-* | dlx-* \ - | elxsi-* \ - | f30[01]-* | f700-* | fido-* | fr30-* | frv-* | fx80-* \ - | h8300-* | h8500-* \ - | hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \ - | i*86-* | i860-* | i960-* | ia64-* \ - | ip2k-* | iq2000-* \ - | m32c-* | m32r-* | m32rle-* \ - | m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \ - | m88110-* | m88k-* | maxq-* | mcore-* \ - | mips-* | mipsbe-* | mipseb-* | mipsel-* | mipsle-* \ - | mips16-* \ - | mips64-* | mips64el-* \ - | mips64vr-* | mips64vrel-* \ - | mips64orion-* | mips64orionel-* \ - | mips64vr4100-* | mips64vr4100el-* \ - | mips64vr4300-* | mips64vr4300el-* \ - | mips64vr5000-* | mips64vr5000el-* \ - | mips64vr5900-* | mips64vr5900el-* \ - | mipsisa32-* | mipsisa32el-* \ - | mipsisa32r2-* | mipsisa32r2el-* \ - | mipsisa64-* | mipsisa64el-* \ - | mipsisa64r2-* | mipsisa64r2el-* \ - | mipsisa64sb1-* | mipsisa64sb1el-* \ - | mipsisa64sr71k-* | mipsisa64sr71kel-* \ - | mipstx39-* | mipstx39el-* \ - | mmix-* \ - | mt-* \ - | msp430-* \ - | nios-* | nios2-* \ - | none-* | np1-* | ns16k-* | ns32k-* \ - | orion-* \ - | pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \ - | powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* | ppcbe-* \ - | pyramid-* \ - | romp-* | rs6000-* \ - | sh-* | sh[1234]-* | sh[24]a-* | sh[24]a*eb-* | sh[23]e-* | sh[34]eb-* | sheb-* | shbe-* \ - | shle-* | sh[1234]le-* | sh3ele-* | sh64-* | sh64le-* \ - | sparc-* | sparc64-* | sparc64b-* | sparc64v-* | sparc86x-* | sparclet-* \ - | sparclite-* \ - | sparcv8-* | sparcv9-* | sparcv9b-* | sparcv9v-* | strongarm-* | sv1-* | sx?-* \ - | tahoe-* | thumb-* \ - | tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* \ - | tron-* \ - | v850-* | v850e-* | vax-* \ - | we32k-* \ - | x86-* | x86_64-* | xc16x-* | xps100-* | xscale-* | xscalee[bl]-* \ - | xstormy16-* | xtensa-* \ - | ymp-* \ - | z8k-*) - ;; - # Recognize the various machine names and aliases which stand - # for a CPU type and a company and sometimes even an OS. - 386bsd) - basic_machine=i386-unknown - os=-bsd - ;; - 3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc) - basic_machine=m68000-att - ;; - 3b*) - basic_machine=we32k-att - ;; - a29khif) - basic_machine=a29k-amd - os=-udi - ;; - abacus) - basic_machine=abacus-unknown - ;; - adobe68k) - basic_machine=m68010-adobe - os=-scout - ;; - alliant | fx80) - basic_machine=fx80-alliant - ;; - altos | altos3068) - basic_machine=m68k-altos - ;; - am29k) - basic_machine=a29k-none - os=-bsd - ;; - amd64) - basic_machine=x86_64-pc - ;; - amd64-*) - basic_machine=x86_64-`echo $basic_machine | sed 's/^[^-]*-//'` - ;; - amdahl) - basic_machine=580-amdahl - os=-sysv - ;; - amiga | amiga-*) - basic_machine=m68k-unknown - ;; - amigaos | amigados) - basic_machine=m68k-unknown - os=-amigaos - ;; - amigaunix | amix) - basic_machine=m68k-unknown - os=-sysv4 - ;; - apollo68) - basic_machine=m68k-apollo - os=-sysv - ;; - apollo68bsd) - basic_machine=m68k-apollo - os=-bsd - ;; - aux) - basic_machine=m68k-apple - os=-aux - ;; - balance) - basic_machine=ns32k-sequent - os=-dynix - ;; - c90) - basic_machine=c90-cray - os=-unicos - ;; - convex-c1) - basic_machine=c1-convex - os=-bsd - ;; - convex-c2) - basic_machine=c2-convex - os=-bsd - ;; - convex-c32) - basic_machine=c32-convex - os=-bsd - ;; - convex-c34) - basic_machine=c34-convex - os=-bsd - ;; - convex-c38) - basic_machine=c38-convex - os=-bsd - ;; - cray | j90) - basic_machine=j90-cray - os=-unicos - ;; - craynv) - basic_machine=craynv-cray - os=-unicosmp - ;; - cr16) - basic_machine=cr16-unknown - os=-elf - ;; - crds | unos) - basic_machine=m68k-crds - ;; - crisv32 | crisv32-* | etraxfs*) - basic_machine=crisv32-axis - ;; - cris | cris-* | etrax*) - basic_machine=cris-axis - ;; - crx) - basic_machine=crx-unknown - os=-elf - ;; - da30 | da30-*) - basic_machine=m68k-da30 - ;; - decstation | decstation-3100 | pmax | pmax-* | pmin | dec3100 | decstatn) - basic_machine=mips-dec - ;; - decsystem10* | dec10*) - basic_machine=pdp10-dec - os=-tops10 - ;; - decsystem20* | dec20*) - basic_machine=pdp10-dec - os=-tops20 - ;; - delta | 3300 | motorola-3300 | motorola-delta \ - | 3300-motorola | delta-motorola) - basic_machine=m68k-motorola - ;; - delta88) - basic_machine=m88k-motorola - os=-sysv3 - ;; - djgpp) - basic_machine=i586-pc - os=-msdosdjgpp - ;; - dpx20 | dpx20-*) - basic_machine=rs6000-bull - os=-bosx - ;; - dpx2* | dpx2*-bull) - basic_machine=m68k-bull - os=-sysv3 - ;; - ebmon29k) - basic_machine=a29k-amd - os=-ebmon - ;; - elxsi) - basic_machine=elxsi-elxsi - os=-bsd - ;; - encore | umax | mmax) - basic_machine=ns32k-encore - ;; - es1800 | OSE68k | ose68k | ose | OSE) - basic_machine=m68k-ericsson - os=-ose - ;; - fx2800) - basic_machine=i860-alliant - ;; - genix) - basic_machine=ns32k-ns - ;; - gmicro) - basic_machine=tron-gmicro - os=-sysv - ;; - go32) - basic_machine=i386-pc - os=-go32 - ;; - h3050r* | hiux*) - basic_machine=hppa1.1-hitachi - os=-hiuxwe2 - ;; - h8300hms) - basic_machine=h8300-hitachi - os=-hms - ;; - h8300xray) - basic_machine=h8300-hitachi - os=-xray - ;; - h8500hms) - basic_machine=h8500-hitachi - os=-hms - ;; - harris) - basic_machine=m88k-harris - os=-sysv3 - ;; - hp300-*) - basic_machine=m68k-hp - ;; - hp300bsd) - basic_machine=m68k-hp - os=-bsd - ;; - hp300hpux) - basic_machine=m68k-hp - os=-hpux - ;; - hp3k9[0-9][0-9] | hp9[0-9][0-9]) - basic_machine=hppa1.0-hp - ;; - hp9k2[0-9][0-9] | hp9k31[0-9]) - basic_machine=m68000-hp - ;; - hp9k3[2-9][0-9]) - basic_machine=m68k-hp - ;; - hp9k6[0-9][0-9] | hp6[0-9][0-9]) - basic_machine=hppa1.0-hp - ;; - hp9k7[0-79][0-9] | hp7[0-79][0-9]) - basic_machine=hppa1.1-hp - ;; - hp9k78[0-9] | hp78[0-9]) - # FIXME: really hppa2.0-hp - basic_machine=hppa1.1-hp - ;; - hp9k8[67]1 | hp8[67]1 | hp9k80[24] | hp80[24] | hp9k8[78]9 | hp8[78]9 | hp9k893 | hp893) - # FIXME: really hppa2.0-hp - basic_machine=hppa1.1-hp - ;; - hp9k8[0-9][13679] | hp8[0-9][13679]) - basic_machine=hppa1.1-hp - ;; - hp9k8[0-9][0-9] | hp8[0-9][0-9]) - basic_machine=hppa1.0-hp - ;; - hppa-next) - os=-nextstep3 - ;; - hppaosf) - basic_machine=hppa1.1-hp - os=-osf - ;; - hppro) - basic_machine=hppa1.1-hp - os=-proelf - ;; - i370-ibm* | ibm*) - basic_machine=i370-ibm - ;; -# I'm not sure what "Sysv32" means. Should this be sysv3.2? - i*86v32) - basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'` - os=-sysv32 - ;; - i*86v4*) - basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'` - os=-sysv4 - ;; - i*86v) - basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'` - os=-sysv - ;; - i*86sol2) - basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'` - os=-solaris2 - ;; - i386mach) - basic_machine=i386-mach - os=-mach - ;; - i386-vsta | vsta) - basic_machine=i386-unknown - os=-vsta - ;; - iris | iris4d) - basic_machine=mips-sgi - case $os in - -irix*) - ;; - *) - os=-irix4 - ;; - esac - ;; - isi68 | isi) - basic_machine=m68k-isi - os=-sysv - ;; - m88k-omron*) - basic_machine=m88k-omron - ;; - magnum | m3230) - basic_machine=mips-mips - os=-sysv - ;; - merlin) - basic_machine=ns32k-utek - os=-sysv - ;; - mingw32) - basic_machine=i386-pc - os=-mingw32 - ;; - mingw32ce) - basic_machine=arm-unknown - os=-mingw32ce - ;; - miniframe) - basic_machine=m68000-convergent - ;; - *mint | -mint[0-9]* | *MiNT | *MiNT[0-9]*) - basic_machine=m68k-atari - os=-mint - ;; - mipsEE* | ee | ps2) - basic_machine=mips64r5900el-scei - case $os in - -linux*) - ;; - *) - os=-elf - ;; - esac - ;; - iop) - basic_machine=mipsel-scei - os=-irx - ;; - dvp) - basic_machine=dvp-scei - os=-elf - ;; - mips3*-*) - basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'` - ;; - mips3*) - basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`-unknown - ;; - monitor) - basic_machine=m68k-rom68k - os=-coff - ;; - morphos) - basic_machine=powerpc-unknown - os=-morphos - ;; - msdos) - basic_machine=i386-pc - os=-msdos - ;; - ms1-*) - basic_machine=`echo $basic_machine | sed -e 's/ms1-/mt-/'` - ;; - mvs) - basic_machine=i370-ibm - os=-mvs - ;; - ncr3000) - basic_machine=i486-ncr - os=-sysv4 - ;; - netbsd386) - basic_machine=i386-unknown - os=-netbsd - ;; - netwinder) - basic_machine=armv4l-rebel - os=-linux - ;; - news | news700 | news800 | news900) - basic_machine=m68k-sony - os=-newsos - ;; - news1000) - basic_machine=m68030-sony - os=-newsos - ;; - news-3600 | risc-news) - basic_machine=mips-sony - os=-newsos - ;; - necv70) - basic_machine=v70-nec - os=-sysv - ;; - next | m*-next ) - basic_machine=m68k-next - case $os in - -nextstep* ) - ;; - -ns2*) - os=-nextstep2 - ;; - *) - os=-nextstep3 - ;; - esac - ;; - nh3000) - basic_machine=m68k-harris - os=-cxux - ;; - nh[45]000) - basic_machine=m88k-harris - os=-cxux - ;; - nindy960) - basic_machine=i960-intel - os=-nindy - ;; - mon960) - basic_machine=i960-intel - os=-mon960 - ;; - nonstopux) - basic_machine=mips-compaq - os=-nonstopux - ;; - np1) - basic_machine=np1-gould - ;; - nsr-tandem) - basic_machine=nsr-tandem - ;; - op50n-* | op60c-*) - basic_machine=hppa1.1-oki - os=-proelf - ;; - openrisc | openrisc-*) - basic_machine=or32-unknown - ;; - os400) - basic_machine=powerpc-ibm - os=-os400 - ;; - OSE68000 | ose68000) - basic_machine=m68000-ericsson - os=-ose - ;; - os68k) - basic_machine=m68k-none - os=-os68k - ;; - pa-hitachi) - basic_machine=hppa1.1-hitachi - os=-hiuxwe2 - ;; - paragon) - basic_machine=i860-intel - os=-osf - ;; - pbd) - basic_machine=sparc-tti - ;; - pbb) - basic_machine=m68k-tti - ;; - pc532 | pc532-*) - basic_machine=ns32k-pc532 - ;; - pc98) - basic_machine=i386-pc - ;; - pc98-*) - basic_machine=i386-`echo $basic_machine | sed 's/^[^-]*-//'` - ;; - pentium | p5 | k5 | k6 | nexgen | viac3) - basic_machine=i586-pc - ;; - pentiumpro | p6 | 6x86 | athlon | athlon_*) - basic_machine=i686-pc - ;; - pentiumii | pentium2 | pentiumiii | pentium3) - basic_machine=i686-pc - ;; - pentium4) - basic_machine=i786-pc - ;; - pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*) - basic_machine=i586-`echo $basic_machine | sed 's/^[^-]*-//'` - ;; - pentiumpro-* | p6-* | 6x86-* | athlon-*) - basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'` - ;; - pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*) - basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'` - ;; - pentium4-*) - basic_machine=i786-`echo $basic_machine | sed 's/^[^-]*-//'` - ;; - pn) - basic_machine=pn-gould - ;; - power) basic_machine=power-ibm - ;; - ppc) basic_machine=powerpc-unknown - ;; - ppc-*) basic_machine=powerpc-`echo $basic_machine | sed 's/^[^-]*-//'` - ;; - ppcle | powerpclittle | ppc-le | powerpc-little) - basic_machine=powerpcle-unknown - ;; - ppcle-* | powerpclittle-*) - basic_machine=powerpcle-`echo $basic_machine | sed 's/^[^-]*-//'` - ;; - ppc64) basic_machine=powerpc64-unknown - ;; - ppc64-*) basic_machine=powerpc64-`echo $basic_machine | sed 's/^[^-]*-//'` - ;; - ppc64le | powerpc64little | ppc64-le | powerpc64-little) - basic_machine=powerpc64le-unknown - ;; - ppc64le-* | powerpc64little-*) - basic_machine=powerpc64le-`echo $basic_machine | sed 's/^[^-]*-//'` - ;; - ps2) - basic_machine=i386-ibm - ;; - pw32) - basic_machine=i586-unknown - os=-pw32 - ;; - rdos) - basic_machine=i386-pc - os=-rdos - ;; - rom68k) - basic_machine=m68k-rom68k - os=-coff - ;; - rm[46]00) - basic_machine=mips-siemens - ;; - rtpc | rtpc-*) - basic_machine=romp-ibm - ;; - s390 | s390-*) - basic_machine=s390-ibm - ;; - s390x | s390x-*) - basic_machine=s390x-ibm - ;; - sa29200) - basic_machine=a29k-amd - os=-udi - ;; - sb1) - basic_machine=mipsisa64sb1-unknown - ;; - sb1el) - basic_machine=mipsisa64sb1el-unknown - ;; - sde) - basic_machine=mipsisa32-sde - os=-elf - ;; - sei) - basic_machine=mips-sei - os=-seiux - ;; - sequent) - basic_machine=i386-sequent - ;; - sh) - basic_machine=sh-hitachi - os=-hms - ;; - sh5el) - basic_machine=sh5le-unknown - ;; - sh64) - basic_machine=sh64-unknown - ;; - sparclite-wrs | simso-wrs) - basic_machine=sparclite-wrs - os=-vxworks - ;; - sps7) - basic_machine=m68k-bull - os=-sysv2 - ;; - spur) - basic_machine=spur-unknown - ;; - st2000) - basic_machine=m68k-tandem - ;; - stratus) - basic_machine=i860-stratus - os=-sysv4 - ;; - sun2) - basic_machine=m68000-sun - ;; - sun2os3) - basic_machine=m68000-sun - os=-sunos3 - ;; - sun2os4) - basic_machine=m68000-sun - os=-sunos4 - ;; - sun3os3) - basic_machine=m68k-sun - os=-sunos3 - ;; - sun3os4) - basic_machine=m68k-sun - os=-sunos4 - ;; - sun4os3) - basic_machine=sparc-sun - os=-sunos3 - ;; - sun4os4) - basic_machine=sparc-sun - os=-sunos4 - ;; 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(Exception: srcdir cannot be set this way.) -# If you have a file that sets one or more of these environment -# variables, you can invoke configure as follows: -# -# configure --with-hints=FILE -# -# where FILE is the name of the file that sets the environment -# variables. FILE should be an absolute pathname. -# -# This configure.in file is easy to reuse on other projects. Just -# change the argument to AC_INIT(). 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If there is none, -# then check for a files named "$host.hints" and ../$hosts.hints where -# $host is the hostname of the build system. If still no hints are -# found, try looking in $system.hints and ../$system.hints where -# $system is the result of uname -s. -# -AC_ARG_WITH(hints, - AC_HELP_STRING([--with-hints=FILE],[Read configuration options from FILE]), - hints=$withval) -if test "$hints" = ""; then - host=`hostname | sed 's/\..*//'` - if test -r $host.hints; then - hints=$host.hints - else - if test -r ../$host.hints; then - hints=../$host.hints - fi - fi -fi -if test "$hints" = ""; then - sys=`uname -s` - if test -r $sys.hints; then - hints=$sys.hints - else - if test -r ../$sys.hints; then - hints=../$sys.hints - fi - fi -fi -if test "$hints" != ""; then - AC_MSG_RESULT(reading hints from $hints) - . $hints -fi - -######### -# Locate a compiler for the build machine. This compiler should -# generate command-line programs that run on the build machine. -# -if test x"$cross_compiling" = xno; then - BUILD_CC=$CC - BUILD_CFLAGS=$CFLAGS -else - if test "${BUILD_CC+set}" != set; then - AC_CHECK_PROGS(BUILD_CC, gcc cc cl) - fi - if test "${BUILD_CFLAGS+set}" != set; then - BUILD_CFLAGS="-g" - fi -fi -AC_SUBST(BUILD_CC) - -########## -# Do we want to support multithreaded use of sqlite -# -AC_ARG_ENABLE(threadsafe, -AC_HELP_STRING([--enable-threadsafe],[Support threadsafe operation]),,enable_threadsafe=yes) -AC_MSG_CHECKING([whether to support threadsafe operation]) -if test "$enable_threadsafe" = "no"; then - SQLITE_THREADSAFE=0 - AC_MSG_RESULT([no]) -else - SQLITE_THREADSAFE=1 - AC_MSG_RESULT([yes]) -fi -AC_SUBST(SQLITE_THREADSAFE) - -if test "$SQLITE_THREADSAFE" = "1"; then - AC_SEARCH_LIBS(pthread_create, pthread) -fi - -########## -# Do we want to allow a connection created in one thread to be used -# in another thread. This does not work on many Linux systems (ex: RedHat 9) -# due to bugs in the threading implementations. This is thus off by default. -# -AC_ARG_ENABLE(cross-thread-connections, -AC_HELP_STRING([--enable-cross-thread-connections],[Allow connection sharing across threads]),,enable_xthreadconnect=no) -AC_MSG_CHECKING([whether to allow connections to be shared across threads]) -if test "$enable_xthreadconnect" = "no"; then - XTHREADCONNECT='' - AC_MSG_RESULT([no]) -else - XTHREADCONNECT='-DSQLITE_ALLOW_XTHREAD_CONNECT=1' - AC_MSG_RESULT([yes]) -fi -AC_SUBST(XTHREADCONNECT) - -########## -# Do we want to support release -# -AC_ARG_ENABLE(releasemode, -AC_HELP_STRING([--enable-releasemode],[Support libtool link to release mode]),,enable_releasemode=no) -AC_MSG_CHECKING([whether to support shared library linked as release mode or not]) -if test "$enable_releasemode" = "no"; then - ALLOWRELEASE="" - AC_MSG_RESULT([no]) -else - ALLOWRELEASE="-release `cat $srcdir/VERSION`" - AC_MSG_RESULT([yes]) -fi -AC_SUBST(ALLOWRELEASE) - -########## -# Do we want temporary databases in memory -# -AC_ARG_ENABLE(tempstore, -AC_HELP_STRING([--enable-tempstore],[Use an in-ram database for temporary tables (never,no,yes,always)]),,enable_tempstore=no) -AC_MSG_CHECKING([whether to use an in-ram database for temporary tables]) -case "$enable_tempstore" in - never ) - TEMP_STORE=0 - AC_MSG_RESULT([never]) - ;; - no ) - TEMP_STORE=1 - AC_MSG_RESULT([no]) - ;; - yes ) - TEMP_STORE=2 - AC_MSG_RESULT([yes]) - ;; - always ) - TEMP_STORE=3 - AC_MSG_RESULT([always]) - ;; - * ) - TEMP_STORE=1 - AC_MSG_RESULT([no]) - ;; -esac - -AC_SUBST(TEMP_STORE) - -########### -# Lots of things are different if we are compiling for Windows using -# the CYGWIN environment. So check for that special case and handle -# things accordingly. -# -AC_MSG_CHECKING([if executables have the .exe suffix]) -if test "$config_BUILD_EXEEXT" = ".exe"; then - CYGWIN=yes - AC_MSG_RESULT(yes) -else - AC_MSG_RESULT(unknown) -fi -if test "$CYGWIN" != "yes"; then - AC_CYGWIN -fi -if test "$CYGWIN" = "yes"; then - BUILD_EXEEXT=.exe -else - BUILD_EXEEXT=$EXEEXT -fi -if test x"$cross_compiling" = xno; then - TARGET_EXEEXT=$BUILD_EXEEXT -else - TARGET_EXEEXT=$config_TARGET_EXEEXT -fi -if test "$TARGET_EXEEXT" = ".exe"; then - if test $OS2_SHELL ; then - SQLITE_OS_UNIX=0 - SQLITE_OS_WIN=0 - SQLITE_OS_OS2=1 - CFLAGS="$CFLAGS -DSQLITE_OS_OS2=1" - else - SQLITE_OS_UNIX=0 - SQLITE_OS_WIN=1 - SQLITE_OS_OS2=0 - CFLAGS="$CFLAGS -DSQLITE_OS_WIN=1" - fi -else - SQLITE_OS_UNIX=1 - SQLITE_OS_WIN=0 - SQLITE_OS_OS2=0 - CFLAGS="$CFLAGS -DSQLITE_OS_UNIX=1" -fi - -AC_SUBST(BUILD_EXEEXT) -AC_SUBST(SQLITE_OS_UNIX) -AC_SUBST(SQLITE_OS_WIN) -AC_SUBST(SQLITE_OS_OS2) -AC_SUBST(TARGET_EXEEXT) - -########## -# Figure out all the parameters needed to compile against Tcl. -# -# This code is derived from the SC_PATH_TCLCONFIG and SC_LOAD_TCLCONFIG -# macros in the in the tcl.m4 file of the standard TCL distribution. -# Those macros could not be used directly since we have to make some -# minor changes to accomodate systems that do not have TCL installed. -# -AC_ARG_ENABLE(tcl, AC_HELP_STRING([--disable-tcl],[do not build TCL extension]), - [use_tcl=$enableval],[use_tcl=yes]) -if test "${use_tcl}" = "yes" ; then - AC_ARG_WITH(tcl, AC_HELP_STRING([--with-tcl=DIR],[directory containing tcl configuration (tclConfig.sh)]), with_tclconfig=${withval}) - AC_MSG_CHECKING([for Tcl configuration]) - AC_CACHE_VAL(ac_cv_c_tclconfig,[ - # First check to see if --with-tcl was specified. - if test x"${with_tclconfig}" != x ; then - if test -f "${with_tclconfig}/tclConfig.sh" ; then - ac_cv_c_tclconfig=`(cd ${with_tclconfig}; pwd)` - else - AC_MSG_ERROR([${with_tclconfig} directory doesn't contain tclConfig.sh]) - fi - fi - - # Start autosearch by asking tclsh - if test x"$cross_compiling" = xno; then - for i in `echo 'puts stdout $auto_path' | ${TCLSH_CMD}` - do - if test -f "$i/tclConfig.sh" ; then - ac_cv_c_tclconfig="$i" - break - fi - done - fi - - # then check for a private Tcl installation - if test x"${ac_cv_c_tclconfig}" = x ; then - for i in \ - ../tcl \ - `ls -dr ../tcl[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \ - `ls -dr ../tcl[[8-9]].[[0-9]] 2>/dev/null` \ - `ls -dr ../tcl[[8-9]].[[0-9]]* 2>/dev/null` \ - ../../tcl \ - `ls -dr ../../tcl[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \ - `ls -dr ../../tcl[[8-9]].[[0-9]] 2>/dev/null` \ - `ls -dr ../../tcl[[8-9]].[[0-9]]* 2>/dev/null` \ - ../../../tcl \ - `ls -dr ../../../tcl[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \ - `ls -dr ../../../tcl[[8-9]].[[0-9]] 2>/dev/null` \ - `ls -dr ../../../tcl[[8-9]].[[0-9]]* 2>/dev/null` - do - if test -f "$i/unix/tclConfig.sh" ; then - ac_cv_c_tclconfig=`(cd $i/unix; pwd)` - break - fi - done - fi - - # check in a few common install locations - if test x"${ac_cv_c_tclconfig}" = x ; then - for i in \ - `ls -d ${libdir} 2>/dev/null` \ - `ls -d /usr/local/lib 2>/dev/null` \ - `ls -d /usr/contrib/lib 2>/dev/null` \ - `ls -d /usr/lib 2>/dev/null` - do - if test -f "$i/tclConfig.sh" ; then - ac_cv_c_tclconfig=`(cd $i; pwd)` - break - fi - done - fi - - # check in a few other private locations - if test x"${ac_cv_c_tclconfig}" = x ; then - for i in \ - ${srcdir}/../tcl \ - `ls -dr ${srcdir}/../tcl[[8-9]].[[0-9]].[[0-9]]* 2>/dev/null` \ - `ls -dr ${srcdir}/../tcl[[8-9]].[[0-9]] 2>/dev/null` \ - `ls -dr ${srcdir}/../tcl[[8-9]].[[0-9]]* 2>/dev/null` - do - if test -f "$i/unix/tclConfig.sh" ; then - ac_cv_c_tclconfig=`(cd $i/unix; pwd)` - break - fi - done - fi - ]) - - if test x"${ac_cv_c_tclconfig}" = x ; then - use_tcl=no - AC_MSG_WARN(Can't find Tcl configuration definitions) - AC_MSG_WARN(*** Without Tcl the regression tests cannot be executed ***) - AC_MSG_WARN(*** Consider using --with-tcl=... to define location of Tcl ***) - else - TCL_BIN_DIR=${ac_cv_c_tclconfig} - AC_MSG_RESULT(found $TCL_BIN_DIR/tclConfig.sh) - - AC_MSG_CHECKING([for existence of $TCL_BIN_DIR/tclConfig.sh]) - if test -f "$TCL_BIN_DIR/tclConfig.sh" ; then - AC_MSG_RESULT([loading]) - . $TCL_BIN_DIR/tclConfig.sh - else - AC_MSG_RESULT([file not found]) - fi - - # - # If the TCL_BIN_DIR is the build directory (not the install directory), - # then set the common variable name to the value of the build variables. - # For example, the variable TCL_LIB_SPEC will be set to the value - # of TCL_BUILD_LIB_SPEC. An extension should make use of TCL_LIB_SPEC - # instead of TCL_BUILD_LIB_SPEC since it will work with both an - # installed and uninstalled version of Tcl. - # - - if test -f $TCL_BIN_DIR/Makefile ; then - TCL_LIB_SPEC=${TCL_BUILD_LIB_SPEC} - TCL_STUB_LIB_SPEC=${TCL_BUILD_STUB_LIB_SPEC} - TCL_STUB_LIB_PATH=${TCL_BUILD_STUB_LIB_PATH} - fi - - # - # eval is required to do the TCL_DBGX substitution - # - - eval "TCL_LIB_FILE=\"${TCL_LIB_FILE}\"" - eval "TCL_LIB_FLAG=\"${TCL_LIB_FLAG}\"" - eval "TCL_LIB_SPEC=\"${TCL_LIB_SPEC}\"" - - eval "TCL_STUB_LIB_FILE=\"${TCL_STUB_LIB_FILE}\"" - eval "TCL_STUB_LIB_FLAG=\"${TCL_STUB_LIB_FLAG}\"" - eval "TCL_STUB_LIB_SPEC=\"${TCL_STUB_LIB_SPEC}\"" - - AC_SUBST(TCL_VERSION) - AC_SUBST(TCL_BIN_DIR) - AC_SUBST(TCL_SRC_DIR) - AC_SUBST(TCL_LIBS) - AC_SUBST(TCL_INCLUDE_SPEC) - - AC_SUBST(TCL_LIB_FILE) - AC_SUBST(TCL_LIB_FLAG) - AC_SUBST(TCL_LIB_SPEC) - - AC_SUBST(TCL_STUB_LIB_FILE) - AC_SUBST(TCL_STUB_LIB_FLAG) - AC_SUBST(TCL_STUB_LIB_SPEC) - fi -fi -if test "${use_tcl}" = "no" ; then - HAVE_TCL="" -else - HAVE_TCL=1 -fi -AC_SUBST(HAVE_TCL) - -########## -# Figure out what C libraries are required to compile programs -# that use "readline()" library. -# -TARGET_READLINE_LIBS="" -TARGET_READLINE_INC="" -TARGET_HAVE_READLINE=0 -AC_ARG_ENABLE([readline], - [AC_HELP_STRING([--disable-readline],[disable readline support [default=detect]])], - [with_readline=$enableval], - [with_readline=auto]) - -if test x"$with_readline" != xno; then - found="yes" - - AC_ARG_WITH([readline-lib], - [AC_HELP_STRING([--with-readline-lib],[specify readline library])], - [with_readline_lib=$withval], - [with_readline_lib="auto"]) - if test "x$with_readline_lib" = xauto; then - save_LIBS="$LIBS" - LIBS="" - AC_SEARCH_LIBS(tgetent, [readline ncurses curses termcap], [term_LIBS="$LIBS"], [term_LIBS=""]) - AC_CHECK_LIB([readline], [readline], [TARGET_READLINE_LIBS="-lreadline"], [found="no"]) - TARGET_READLINE_LIBS="$TARGET_READLINE_LIBS $term_LIBS" - LIBS="$save_LIBS" - else - TARGET_READLINE_LIBS="$with_readline_lib" - fi - - AC_ARG_WITH([readline-inc], - [AC_HELP_STRING([--with-readline-inc],[specify readline include paths])], - [with_readline_inc=$withval], - [with_readline_inc="auto"]) - if test "x$with_readline_inc" = xauto; then - AC_CHECK_HEADER(readline.h, [found="yes"], [ - found="no" - if test "$cross_compiling" != yes; then - for dir in /usr /usr/local /usr/local/readline /usr/contrib /mingw; do - for subdir in include include/readline; do - AC_CHECK_FILE($dir/$subdir/readline.h, found=yes) - if test "$found" = "yes"; then - TARGET_READLINE_INC="-I$dir/$subdir" - break - fi - done - test "$found" = "yes" && break - done - fi - ]) - else - TARGET_READLINE_INC="$with_readline_inc" - fi - - if test x"$found" = xno; then - TARGET_READLINE_LIBS="" - TARGET_READLINE_INC="" - TARGET_HAVE_READLINE=0 - else - TARGET_HAVE_READLINE=1 - fi -fi - -AC_SUBST(TARGET_READLINE_LIBS) -AC_SUBST(TARGET_READLINE_INC) -AC_SUBST(TARGET_HAVE_READLINE) - -########## -# Figure out what C libraries are required to compile programs -# that use "fdatasync()" function. -# -AC_SEARCH_LIBS(fdatasync, [rt]) - -######### -# check for debug enabled -AC_ARG_ENABLE(debug, AC_HELP_STRING([--enable-debug],[enable debugging & verbose explain]), - [use_debug=$enableval],[use_debug=no]) -if test "${use_debug}" = "yes" ; then - TARGET_DEBUG="-DSQLITE_DEBUG=1" -else - TARGET_DEBUG="-DNDEBUG" -fi -AC_SUBST(TARGET_DEBUG) - -######### -# See whether we should use the amalgamation to build -AC_ARG_ENABLE(amalgamation, AC_HELP_STRING([--disable-amalgamation], - [Disable the amalgamation and instead build all files separately]), - [use_amalgamation=$enableval],[use_amalgamation=yes]) -if test "${use_amalgamation}" != "yes" ; then - USE_AMALGAMATION=0 -fi -AC_SUBST(USE_AMALGAMATION) - -######### -# See whether we should allow loadable extensions -AC_ARG_ENABLE(load-extension, AC_HELP_STRING([--enable-load-extension], - [Enable loading of external extensions]), - [use_loadextension=$enableval],[use_loadextension=no]) -if test "${use_loadextension}" = "yes" ; then - OPT_FEATURE_FLAGS="" - AC_SEARCH_LIBS(dlopen, dl) -else - OPT_FEATURE_FLAGS="-DSQLITE_OMIT_LOAD_EXTENSION=1" -fi - -######### -# attempt to duplicate any OMITS and ENABLES into the $(OPT_FEATURE_FLAGS) parameter -for option in $CFLAGS $CPPFLAGS -do - case $option in - -DSQLITE_OMIT*) OPT_FEATURE_FLAGS="$OPT_FEATURE_FLAGS $option";; - -DSQLITE_ENABLE*) OPT_FEATURE_FLAGS="$OPT_FEATURE_FLAGS $option";; - esac -done -AC_SUBST(OPT_FEATURE_FLAGS) - - -# attempt to remove any OMITS and ENABLES from the $(CFLAGS) parameter -ac_temp_CFLAGS="" -for option in $CFLAGS -do - case $option in - -DSQLITE_OMIT*) ;; - -DSQLITE_ENABLE*) ;; - *) ac_temp_CFLAGS="$ac_temp_CFLAGS $option";; - esac -done -CFLAGS=$ac_temp_CFLAGS - - -# attempt to remove any OMITS and ENABLES from the $(CPPFLAGS) parameter -ac_temp_CPPFLAGS="" -for option in $CPPFLAGS -do - case $option in - -DSQLITE_OMIT*) ;; - -DSQLITE_ENABLE*) ;; - *) ac_temp_CPPFLAGS="$ac_temp_CPPFLAGS $option";; - esac -done -CPPFLAGS=$ac_temp_CPPFLAGS - - -# attempt to remove any OMITS and ENABLES from the $(BUILD_CFLAGS) parameter -ac_temp_BUILD_CFLAGS="" -for option in $BUILD_CFLAGS -do - case $option in - -DSQLITE_OMIT*) ;; - -DSQLITE_ENABLE*) ;; - *) ac_temp_BUILD_CFLAGS="$ac_temp_BUILD_CFLAGS $option";; - esac -done -BUILD_CFLAGS=$ac_temp_BUILD_CFLAGS - - -######### -# See whether we should use GCOV -AC_ARG_ENABLE(gcov, AC_HELP_STRING([--enable-gcov], - [Enable coverage testing using gcov]), - [use_gcov=$enableval],[use_gcov=no]) -if test "${use_gcov}" = "yes" ; then - USE_GCOV=1 -else - USE_GCOV=0 -fi -AC_SUBST(USE_GCOV) - - -######### -# Output the config header -AC_CONFIG_HEADERS(config.h) - -######### -# Generate the output files. -# -AC_SUBST(BUILD_CFLAGS) -AC_OUTPUT([ -Makefile -sqlite3.pc -]) diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/contrib/sqlitecon.tcl b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/contrib/sqlitecon.tcl deleted file mode 100644 index 3dd433a6ea..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/contrib/sqlitecon.tcl +++ /dev/null @@ -1,679 +0,0 @@ -# A Tk console widget for SQLite. Invoke sqlitecon::create with a window name, -# a prompt string, a title to set a new top-level window, and the SQLite -# database handle. For example: -# -# sqlitecon::create .sqlcon {sql:- } {SQL Console} db -# -# A toplevel window is created that allows you to type in SQL commands to -# be processed on the spot. -# -# A limited set of dot-commands are supported: -# -# .table -# .schema ?TABLE? -# .mode list|column|multicolumn|line -# .exit -# -# In addition, a new SQL function named "edit()" is created. This function -# takes a single text argument and returns a text result. Whenever the -# the function is called, it pops up a new toplevel window containing a -# text editor screen initialized to the argument. When the "OK" button -# is pressed, whatever revised text is in the text editor is returned as -# the result of the edit() function. This allows text fields of SQL tables -# to be edited quickly and easily as follows: -# -# UPDATE table1 SET dscr = edit(dscr) WHERE rowid=15; -# - - -# Create a namespace to work in -# -namespace eval ::sqlitecon { - # do nothing -} - -# Create a console widget named $w. The prompt string is $prompt. -# The title at the top of the window is $title. The database connection -# object is $db -# -proc sqlitecon::create {w prompt title db} { - upvar #0 $w.t v - if {[winfo exists $w]} {destroy $w} - if {[info exists v]} {unset v} - toplevel $w - wm title $w $title - wm iconname $w $title - frame $w.mb -bd 2 -relief raised - pack $w.mb -side top -fill x - menubutton $w.mb.file -text File -menu $w.mb.file.m - menubutton $w.mb.edit -text Edit -menu $w.mb.edit.m - pack $w.mb.file $w.mb.edit -side left -padx 8 -pady 1 - set m [menu $w.mb.file.m -tearoff 0] - $m add command -label {Close} -command "destroy $w" - sqlitecon::create_child $w $prompt $w.mb.edit.m - set v(db) $db - $db function edit ::sqlitecon::_edit -} - -# This routine creates a console as a child window within a larger -# window. It also creates an edit menu named "$editmenu" if $editmenu!="". -# The calling function is responsible for posting the edit menu. -# -proc sqlitecon::create_child {w prompt editmenu} { - upvar #0 $w.t v - if {$editmenu!=""} { - set m [menu $editmenu -tearoff 0] - $m add command -label Cut -command "sqlitecon::Cut $w.t" - $m add command -label Copy -command "sqlitecon::Copy $w.t" - $m add command -label Paste -command "sqlitecon::Paste $w.t" - $m add command -label {Clear Screen} -command "sqlitecon::Clear $w.t" - $m add separator - $m add command -label {Save As...} -command "sqlitecon::SaveFile $w.t" - catch {$editmenu config -postcommand "sqlitecon::EnableEditMenu $w"} - } - scrollbar $w.sb -orient vertical -command "$w.t yview" - pack $w.sb -side right -fill y - text $w.t -font fixed -yscrollcommand "$w.sb set" - pack $w.t -side right -fill both -expand 1 - bindtags $w.t Sqlitecon - set v(editmenu) $editmenu - set v(history) 0 - set v(historycnt) 0 - set v(current) -1 - set v(prompt) $prompt - set v(prior) {} - set v(plength) [string length $v(prompt)] - set v(x) 0 - set v(y) 0 - set v(mode) column - set v(header) on - $w.t mark set insert end - $w.t tag config ok -foreground blue - $w.t tag config err -foreground red - $w.t insert end $v(prompt) - $w.t mark set out 1.0 - after idle "focus $w.t" -} - -bind Sqlitecon <1> {sqlitecon::Button1 %W %x %y} -bind Sqlitecon {sqlitecon::B1Motion %W %x %y} -bind Sqlitecon {sqlitecon::B1Leave %W %x %y} -bind Sqlitecon {sqlitecon::cancelMotor %W} -bind Sqlitecon {sqlitecon::cancelMotor %W} -bind Sqlitecon {sqlitecon::Insert %W %A} -bind Sqlitecon {sqlitecon::Left %W} -bind Sqlitecon {sqlitecon::Left %W} -bind Sqlitecon {sqlitecon::Right %W} -bind Sqlitecon {sqlitecon::Right %W} -bind Sqlitecon {sqlitecon::Backspace %W} -bind Sqlitecon {sqlitecon::Backspace %W} -bind Sqlitecon {sqlitecon::Delete %W} -bind Sqlitecon {sqlitecon::Delete %W} -bind Sqlitecon {sqlitecon::Home %W} -bind Sqlitecon {sqlitecon::Home %W} -bind Sqlitecon {sqlitecon::End %W} -bind Sqlitecon {sqlitecon::End %W} -bind Sqlitecon {sqlitecon::Enter %W} -bind Sqlitecon {sqlitecon::Enter %W} -bind Sqlitecon {sqlitecon::Prior %W} -bind Sqlitecon {sqlitecon::Prior %W} -bind Sqlitecon {sqlitecon::Next %W} -bind Sqlitecon {sqlitecon::Next %W} -bind Sqlitecon {sqlitecon::EraseEOL %W} -bind Sqlitecon <> {sqlitecon::Cut %W} -bind Sqlitecon <> {sqlitecon::Copy %W} -bind Sqlitecon <> {sqlitecon::Paste %W} -bind Sqlitecon <> {sqlitecon::Clear %W} - -# Insert a single character at the insertion cursor -# -proc sqlitecon::Insert {w a} { - $w insert insert $a - $w yview insert -} - -# Move the cursor one character to the left -# -proc sqlitecon::Left {w} { - upvar #0 $w v - scan [$w index insert] %d.%d row col - if {$col>$v(plength)} { - $w mark set insert "insert -1c" - } -} - -# Erase the character to the left of the cursor -# -proc sqlitecon::Backspace {w} { - upvar #0 $w v - scan [$w index insert] %d.%d row col - if {$col>$v(plength)} { - $w delete {insert -1c} - } -} - -# Erase to the end of the line -# -proc sqlitecon::EraseEOL {w} { - upvar #0 $w v - scan [$w index insert] %d.%d row col - if {$col>=$v(plength)} { - $w delete insert {insert lineend} - } -} - -# Move the cursor one character to the right -# -proc sqlitecon::Right {w} { - $w mark set insert "insert +1c" -} - -# Erase the character to the right of the cursor -# -proc sqlitecon::Delete w { - $w delete insert -} - -# Move the cursor to the beginning of the current line -# -proc sqlitecon::Home w { - upvar #0 $w v - scan [$w index insert] %d.%d row col - $w mark set insert $row.$v(plength) -} - -# Move the cursor to the end of the current line -# -proc sqlitecon::End w { - $w mark set insert {insert lineend} -} - -# Add a line to the history -# -proc sqlitecon::addHistory {w line} { - upvar #0 $w v - if {$v(historycnt)>0} { - set last [lindex $v(history) [expr $v(historycnt)-1]] - if {[string compare $last $line]} { - lappend v(history) $line - incr v(historycnt) - } - } else { - set v(history) [list $line] - set v(historycnt) 1 - } - set v(current) $v(historycnt) -} - -# Called when "Enter" is pressed. Do something with the line -# of text that was entered. -# -proc sqlitecon::Enter w { - upvar #0 $w v - scan [$w index insert] %d.%d row col - set start $row.$v(plength) - set line [$w get $start "$start lineend"] - $w insert end \n - $w mark set out end - if {$v(prior)==""} { - set cmd $line - } else { - set cmd $v(prior)\n$line - } - if {[string index $cmd 0]=="." || [$v(db) complete $cmd]} { - regsub -all {\n} [string trim $cmd] { } cmd2 - addHistory $w $cmd2 - set rc [catch {DoCommand $w $cmd} res] - if {![winfo exists $w]} return - if {$rc} { - $w insert end $res\n err - } elseif {[string length $res]>0} { - $w insert end $res\n ok - } - set v(prior) {} - $w insert end $v(prompt) - } else { - set v(prior) $cmd - regsub -all {[^ ]} $v(prompt) . x - $w insert end $x - } - $w mark set insert end - $w mark set out {insert linestart} - $w yview insert -} - -# Execute a single SQL command. Pay special attention to control -# directives that begin with "." -# -# The return value is the text output from the command, properly -# formatted. -# -proc sqlitecon::DoCommand {w cmd} { - upvar #0 $w v - set mode $v(mode) - set header $v(header) - if {[regexp {^(\.[a-z]+)} $cmd all word]} { - if {$word==".mode"} { - regexp {^.[a-z]+ +([a-z]+)} $cmd all v(mode) - return {} - } elseif {$word==".exit"} { - destroy [winfo toplevel $w] - return {} - } elseif {$word==".header"} { - regexp {^.[a-z]+ +([a-z]+)} $cmd all v(header) - return {} - } elseif {$word==".tables"} { - set mode multicolumn - set cmd {SELECT name FROM sqlite_master WHERE type='table' - UNION ALL - SELECT name FROM sqlite_temp_master WHERE type='table'} - $v(db) eval {PRAGMA database_list} { - if {$name!="temp" && $name!="main"} { - append cmd "UNION ALL SELECT name FROM $name.sqlite_master\ - WHERE type='table'" - } - } - append cmd { ORDER BY 1} - } elseif {$word==".fullschema"} { - set pattern % - regexp {^.[a-z]+ +([^ ]+)} $cmd all pattern - set mode list - set header 0 - set cmd "SELECT sql FROM sqlite_master WHERE tbl_name LIKE '$pattern' - AND sql NOT NULL UNION ALL SELECT sql FROM sqlite_temp_master - WHERE tbl_name LIKE '$pattern' AND sql NOT NULL" - $v(db) eval {PRAGMA database_list} { - if {$name!="temp" && $name!="main"} { - append cmd " UNION ALL SELECT sql FROM $name.sqlite_master\ - WHERE tbl_name LIKE '$pattern' AND sql NOT NULL" - } - } - } elseif {$word==".schema"} { - set pattern % - regexp {^.[a-z]+ +([^ ]+)} $cmd all pattern - set mode list - set header 0 - set cmd "SELECT sql FROM sqlite_master WHERE name LIKE '$pattern' - AND sql NOT NULL UNION ALL SELECT sql FROM sqlite_temp_master - WHERE name LIKE '$pattern' AND sql NOT NULL" - $v(db) eval {PRAGMA database_list} { - if {$name!="temp" && $name!="main"} { - append cmd " UNION ALL SELECT sql FROM $name.sqlite_master\ - WHERE name LIKE '$pattern' AND sql NOT NULL" - } - } - } else { - return \ - ".exit\n.mode line|list|column\n.schema ?TABLENAME?\n.tables" - } - } - set res {} - if {$mode=="list"} { - $v(db) eval $cmd x { - set sep {} - foreach col $x(*) { - append res $sep$x($col) - set sep | - } - append res \n - } - if {[info exists x(*)] && $header} { - set sep {} - set hdr {} - foreach col $x(*) { - append hdr $sep$col - set sep | - } - set res $hdr\n$res - } - } elseif {[string range $mode 0 2]=="col"} { - set y {} - $v(db) eval $cmd x { - foreach col $x(*) { - if {![info exists cw($col)] || $cw($col)<[string length $x($col)]} { - set cw($col) [string length $x($col)] - } - lappend y $x($col) - } - } - if {[info exists x(*)] && $header} { - set hdr {} - set ln {} - set dash --------------------------------------------------------------- - append dash ------------------------------------------------------------ - foreach col $x(*) { - if {![info exists cw($col)] || $cw($col)<[string length $col]} { - set cw($col) [string length $col] - } - lappend hdr $col - lappend ln [string range $dash 1 $cw($col)] - } - set y [concat $hdr $ln $y] - } - if {[info exists x(*)]} { - set format {} - set arglist {} - set arglist2 {} - set i 0 - foreach col $x(*) { - lappend arglist x$i - append arglist2 " \$x$i" - incr i - append format " %-$cw($col)s" - } - set format [string trimleft $format]\n - if {[llength $arglist]>0} { - foreach $arglist $y "append res \[format [list $format] $arglist2\]" - } - } - } elseif {$mode=="multicolumn"} { - set y [$v(db) eval $cmd] - set max 0 - foreach e $y { - if {$max<[string length $e]} {set max [string length $e]} - } - set ncol [expr {int(80/($max+2))}] - if {$ncol<1} {set ncol 1} - set nelem [llength $y] - set nrow [expr {($nelem+$ncol-1)/$ncol}] - set format "%-${max}s" - for {set i 0} {$i<$nrow} {incr i} { - set j $i - while 1 { - append res [format $format [lindex $y $j]] - incr j $nrow - if {$j>=$nelem} break - append res { } - } - append res \n - } - } else { - $v(db) eval $cmd x { - foreach col $x(*) {append res "$col = $x($col)\n"} - append res \n - } - } - return [string trimright $res] -} - -# Change the line to the previous line -# -proc sqlitecon::Prior w { - upvar #0 $w v - if {$v(current)<=0} return - incr v(current) -1 - set line [lindex $v(history) $v(current)] - sqlitecon::SetLine $w $line -} - -# Change the line to the next line -# -proc sqlitecon::Next w { - upvar #0 $w v - if {$v(current)>=$v(historycnt)} return - incr v(current) 1 - set line [lindex $v(history) $v(current)] - sqlitecon::SetLine $w $line -} - -# Change the contents of the entry line -# -proc sqlitecon::SetLine {w line} { - upvar #0 $w v - scan [$w index insert] %d.%d row col - set start $row.$v(plength) - $w delete $start end - $w insert end $line - $w mark set insert end - $w yview insert -} - -# Called when the mouse button is pressed at position $x,$y on -# the console widget. -# -proc sqlitecon::Button1 {w x y} { - global tkPriv - upvar #0 $w v - set v(mouseMoved) 0 - set v(pressX) $x - set p [sqlitecon::nearestBoundry $w $x $y] - scan [$w index insert] %d.%d ix iy - scan $p %d.%d px py - if {$px==$ix} { - $w mark set insert $p - } - $w mark set anchor $p - focus $w -} - -# Find the boundry between characters that is nearest -# to $x,$y -# -proc sqlitecon::nearestBoundry {w x y} { - set p [$w index @$x,$y] - set bb [$w bbox $p] - if {![string compare $bb ""]} {return $p} - if {($x-[lindex $bb 0])<([lindex $bb 2]/2)} {return $p} - $w index "$p + 1 char" -} - -# This routine extends the selection to the point specified by $x,$y -# -proc sqlitecon::SelectTo {w x y} { - upvar #0 $w v - set cur [sqlitecon::nearestBoundry $w $x $y] - if {[catch {$w index anchor}]} { - $w mark set anchor $cur - } - set anchor [$w index anchor] - if {[$w compare $cur != $anchor] || (abs($v(pressX) - $x) >= 3)} { - if {$v(mouseMoved)==0} { - $w tag remove sel 0.0 end - } - set v(mouseMoved) 1 - } - if {[$w compare $cur < anchor]} { - set first $cur - set last anchor - } else { - set first anchor - set last $cur - } - if {$v(mouseMoved)} { - $w tag remove sel 0.0 $first - $w tag add sel $first $last - $w tag remove sel $last end - update idletasks - } -} - -# Called whenever the mouse moves while button-1 is held down. -# -proc sqlitecon::B1Motion {w x y} { - upvar #0 $w v - set v(y) $y - set v(x) $x - sqlitecon::SelectTo $w $x $y -} - -# Called whenever the mouse leaves the boundries of the widget -# while button 1 is held down. -# -proc sqlitecon::B1Leave {w x y} { - upvar #0 $w v - set v(y) $y - set v(x) $x - sqlitecon::motor $w -} - -# This routine is called to automatically scroll the window when -# the mouse drags offscreen. -# -proc sqlitecon::motor w { - upvar #0 $w v - if {![winfo exists $w]} return - if {$v(y)>=[winfo height $w]} { - $w yview scroll 1 units - } elseif {$v(y)<0} { - $w yview scroll -1 units - } else { - return - } - sqlitecon::SelectTo $w $v(x) $v(y) - set v(timer) [after 50 sqlitecon::motor $w] -} - -# This routine cancels the scrolling motor if it is active -# -proc sqlitecon::cancelMotor w { - upvar #0 $w v - catch {after cancel $v(timer)} - catch {unset v(timer)} -} - -# Do a Copy operation on the stuff currently selected. -# -proc sqlitecon::Copy w { - if {![catch {set text [$w get sel.first sel.last]}]} { - clipboard clear -displayof $w - clipboard append -displayof $w $text - } -} - -# Return 1 if the selection exists and is contained -# entirely on the input line. Return 2 if the selection -# exists but is not entirely on the input line. Return 0 -# if the selection does not exist. -# -proc sqlitecon::canCut w { - set r [catch { - scan [$w index sel.first] %d.%d s1x s1y - scan [$w index sel.last] %d.%d s2x s2y - scan [$w index insert] %d.%d ix iy - }] - if {$r==1} {return 0} - if {$s1x==$ix && $s2x==$ix} {return 1} - return 2 -} - -# Do a Cut operation if possible. Cuts are only allowed -# if the current selection is entirely contained on the -# current input line. -# -proc sqlitecon::Cut w { - if {[sqlitecon::canCut $w]==1} { - sqlitecon::Copy $w - $w delete sel.first sel.last - } -} - -# Do a paste opeation. -# -proc sqlitecon::Paste w { - if {[sqlitecon::canCut $w]==1} { - $w delete sel.first sel.last - } - if {[catch {selection get -displayof $w -selection CLIPBOARD} topaste] - && [catch {selection get -displayof $w -selection PRIMARY} topaste]} { - return - } - if {[info exists ::$w]} { - set prior 0 - foreach line [split $topaste \n] { - if {$prior} { - sqlitecon::Enter $w - update - } - set prior 1 - $w insert insert $line - } - } else { - $w insert insert $topaste - } -} - -# Enable or disable entries in the Edit menu -# -proc sqlitecon::EnableEditMenu w { - upvar #0 $w.t v - set m $v(editmenu) - if {$m=="" || ![winfo exists $m]} return - switch [sqlitecon::canCut $w.t] { - 0 { - $m entryconf Copy -state disabled - $m entryconf Cut -state disabled - } - 1 { - $m entryconf Copy -state normal - $m entryconf Cut -state normal - } - 2 { - $m entryconf Copy -state normal - $m entryconf Cut -state disabled - } - } -} - -# Prompt the user for the name of a writable file. Then write the -# entire contents of the console screen to that file. -# -proc sqlitecon::SaveFile w { - set types { - {{Text Files} {.txt}} - {{All Files} *} - } - set f [tk_getSaveFile -filetypes $types -title "Write Screen To..."] - if {$f!=""} { - if {[catch {open $f w} fd]} { - tk_messageBox -type ok -icon error -message $fd - } else { - puts $fd [string trimright [$w get 1.0 end] \n] - close $fd - } - } -} - -# Erase everything from the console above the insertion line. -# -proc sqlitecon::Clear w { - $w delete 1.0 {insert linestart} -} - -# An in-line editor for SQL -# -proc sqlitecon::_edit {origtxt {title {}}} { - for {set i 0} {[winfo exists .ed$i]} {incr i} continue - set w .ed$i - toplevel $w - wm protocol $w WM_DELETE_WINDOW "$w.b.can invoke" - wm title $w {Inline SQL Editor} - frame $w.b - pack $w.b -side bottom -fill x - button $w.b.can -text Cancel -width 6 -command [list set ::$w 0] - button $w.b.ok -text OK -width 6 -command [list set ::$w 1] - button $w.b.cut -text Cut -width 6 -command [list ::sqlitecon::Cut $w.t] - button $w.b.copy -text Copy -width 6 -command [list ::sqlitecon::Copy $w.t] - button $w.b.paste -text Paste -width 6 -command [list ::sqlitecon::Paste $w.t] - set ::$w {} - pack $w.b.cut $w.b.copy $w.b.paste $w.b.can $w.b.ok\ - -side left -padx 5 -pady 5 -expand 1 - if {$title!=""} { - label $w.title -text $title - pack $w.title -side top -padx 5 -pady 5 - } - text $w.t -bg white -fg black -yscrollcommand [list $w.sb set] - pack $w.t -side left -fill both -expand 1 - scrollbar $w.sb -orient vertical -command [list $w.t yview] - pack $w.sb -side left -fill y - $w.t insert end $origtxt - - vwait ::$w - - if {[set ::$w]} { - set txt [string trimright [$w.t get 1.0 end]] - } else { - set txt $origtxt - } - destroy $w - return $txt -} diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/doc/lemon.html b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/doc/lemon.html deleted file mode 100644 index 90172cc010..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/doc/lemon.html +++ /dev/null @@ -1,892 +0,0 @@ - - -The Lemon Parser Generator - - -

The Lemon Parser Generator

- -

Lemon is an LALR(1) parser generator for C or C++. -It does the same job as ``bison'' and ``yacc''. -But lemon is not another bison or yacc clone. It -uses a different grammar syntax which is designed to -reduce the number of coding errors. Lemon also uses a more -sophisticated parsing engine that is faster than yacc and -bison and which is both reentrant and thread-safe. -Furthermore, Lemon implements features that can be used -to eliminate resource leaks, making is suitable for use -in long-running programs such as graphical user interfaces -or embedded controllers.

- -

This document is an introduction to the Lemon -parser generator.

- -

Theory of Operation

- -

The main goal of Lemon is to translate a context free grammar (CFG) -for a particular language into C code that implements a parser for -that language. -The program has two inputs: -

    -
  • The grammar specification. -
  • A parser template file. -
-Typically, only the grammar specification is supplied by the programmer. -Lemon comes with a default parser template which works fine for most -applications. But the user is free to substitute a different parser -template if desired.

- -

Depending on command-line options, Lemon will generate between -one and three files of outputs. -

    -
  • C code to implement the parser. -
  • A header file defining an integer ID for each terminal symbol. -
  • An information file that describes the states of the generated parser - automaton. -
-By default, all three of these output files are generated. -The header file is suppressed if the ``-m'' command-line option is -used and the report file is omitted when ``-q'' is selected.

- -

The grammar specification file uses a ``.y'' suffix, by convention. -In the examples used in this document, we'll assume the name of the -grammar file is ``gram.y''. A typical use of Lemon would be the -following command: -

-   lemon gram.y
-
-This command will generate three output files named ``gram.c'', -``gram.h'' and ``gram.out''. -The first is C code to implement the parser. The second -is the header file that defines numerical values for all -terminal symbols, and the last is the report that explains -the states used by the parser automaton.

- -

Command Line Options

- -

The behavior of Lemon can be modified using command-line options. -You can obtain a list of the available command-line options together -with a brief explanation of what each does by typing -

-   lemon -?
-
-As of this writing, the following command-line options are supported: -
    -
  • -b -
  • -c -
  • -g -
  • -m -
  • -q -
  • -s -
  • -x -
-The ``-b'' option reduces the amount of text in the report file by -printing only the basis of each parser state, rather than the full -configuration. -The ``-c'' option suppresses action table compression. Using -c -will make the parser a little larger and slower but it will detect -syntax errors sooner. -The ``-g'' option causes no output files to be generated at all. -Instead, the input grammar file is printed on standard output but -with all comments, actions and other extraneous text deleted. This -is a useful way to get a quick summary of a grammar. -The ``-m'' option causes the output C source file to be compatible -with the ``makeheaders'' program. -Makeheaders is a program that automatically generates header files -from C source code. When the ``-m'' option is used, the header -file is not output since the makeheaders program will take care -of generated all header files automatically. -The ``-q'' option suppresses the report file. -Using ``-s'' causes a brief summary of parser statistics to be -printed. Like this: -
-   Parser statistics: 74 terminals, 70 nonterminals, 179 rules
-                      340 states, 2026 parser table entries, 0 conflicts
-
-Finally, the ``-x'' option causes Lemon to print its version number -and then stops without attempting to read the grammar or generate a parser.

- -

The Parser Interface

- -

Lemon doesn't generate a complete, working program. It only generates -a few subroutines that implement a parser. This section describes -the interface to those subroutines. It is up to the programmer to -call these subroutines in an appropriate way in order to produce a -complete system.

- -

Before a program begins using a Lemon-generated parser, the program -must first create the parser. -A new parser is created as follows: -

-   void *pParser = ParseAlloc( malloc );
-
-The ParseAlloc() routine allocates and initializes a new parser and -returns a pointer to it. -The actual data structure used to represent a parser is opaque -- -its internal structure is not visible or usable by the calling routine. -For this reason, the ParseAlloc() routine returns a pointer to void -rather than a pointer to some particular structure. -The sole argument to the ParseAlloc() routine is a pointer to the -subroutine used to allocate memory. Typically this means ``malloc()''.

- -

After a program is finished using a parser, it can reclaim all -memory allocated by that parser by calling -

-   ParseFree(pParser, free);
-
-The first argument is the same pointer returned by ParseAlloc(). The -second argument is a pointer to the function used to release bulk -memory back to the system.

- -

After a parser has been allocated using ParseAlloc(), the programmer -must supply the parser with a sequence of tokens (terminal symbols) to -be parsed. This is accomplished by calling the following function -once for each token: -

-   Parse(pParser, hTokenID, sTokenData, pArg);
-
-The first argument to the Parse() routine is the pointer returned by -ParseAlloc(). -The second argument is a small positive integer that tells the parse the -type of the next token in the data stream. -There is one token type for each terminal symbol in the grammar. -The gram.h file generated by Lemon contains #define statements that -map symbolic terminal symbol names into appropriate integer values. -(A value of 0 for the second argument is a special flag to the -parser to indicate that the end of input has been reached.) -The third argument is the value of the given token. By default, -the type of the third argument is integer, but the grammar will -usually redefine this type to be some kind of structure. -Typically the second argument will be a broad category of tokens -such as ``identifier'' or ``number'' and the third argument will -be the name of the identifier or the value of the number.

- -

The Parse() function may have either three or four arguments, -depending on the grammar. If the grammar specification file request -it, the Parse() function will have a fourth parameter that can be -of any type chosen by the programmer. The parser doesn't do anything -with this argument except to pass it through to action routines. -This is a convenient mechanism for passing state information down -to the action routines without having to use global variables.

- -

A typical use of a Lemon parser might look something like the -following: -

-   01 ParseTree *ParseFile(const char *zFilename){
-   02    Tokenizer *pTokenizer;
-   03    void *pParser;
-   04    Token sToken;
-   05    int hTokenId;
-   06    ParserState sState;
-   07
-   08    pTokenizer = TokenizerCreate(zFilename);
-   09    pParser = ParseAlloc( malloc );
-   10    InitParserState(&sState);
-   11    while( GetNextToken(pTokenizer, &hTokenId, &sToken) ){
-   12       Parse(pParser, hTokenId, sToken, &sState);
-   13    }
-   14    Parse(pParser, 0, sToken, &sState);
-   15    ParseFree(pParser, free );
-   16    TokenizerFree(pTokenizer);
-   17    return sState.treeRoot;
-   18 }
-
-This example shows a user-written routine that parses a file of -text and returns a pointer to the parse tree. -(We've omitted all error-handling from this example to keep it -simple.) -We assume the existence of some kind of tokenizer which is created -using TokenizerCreate() on line 8 and deleted by TokenizerFree() -on line 16. The GetNextToken() function on line 11 retrieves the -next token from the input file and puts its type in the -integer variable hTokenId. The sToken variable is assumed to be -some kind of structure that contains details about each token, -such as its complete text, what line it occurs on, etc.

- -

This example also assumes the existence of structure of type -ParserState that holds state information about a particular parse. -An instance of such a structure is created on line 6 and initialized -on line 10. A pointer to this structure is passed into the Parse() -routine as the optional 4th argument. -The action routine specified by the grammar for the parser can use -the ParserState structure to hold whatever information is useful and -appropriate. In the example, we note that the treeRoot field of -the ParserState structure is left pointing to the root of the parse -tree.

- -

The core of this example as it relates to Lemon is as follows: -

-   ParseFile(){
-      pParser = ParseAlloc( malloc );
-      while( GetNextToken(pTokenizer,&hTokenId, &sToken) ){
-         Parse(pParser, hTokenId, sToken);
-      }
-      Parse(pParser, 0, sToken);
-      ParseFree(pParser, free );
-   }
-
-Basically, what a program has to do to use a Lemon-generated parser -is first create the parser, then send it lots of tokens obtained by -tokenizing an input source. When the end of input is reached, the -Parse() routine should be called one last time with a token type -of 0. This step is necessary to inform the parser that the end of -input has been reached. Finally, we reclaim memory used by the -parser by calling ParseFree().

- -

There is one other interface routine that should be mentioned -before we move on. -The ParseTrace() function can be used to generate debugging output -from the parser. A prototype for this routine is as follows: -

-   ParseTrace(FILE *stream, char *zPrefix);
-
-After this routine is called, a short (one-line) message is written -to the designated output stream every time the parser changes states -or calls an action routine. Each such message is prefaced using -the text given by zPrefix. This debugging output can be turned off -by calling ParseTrace() again with a first argument of NULL (0).

- -

Differences With YACC and BISON

- -

Programmers who have previously used the yacc or bison parser -generator will notice several important differences between yacc and/or -bison and Lemon. -

    -
  • In yacc and bison, the parser calls the tokenizer. In Lemon, - the tokenizer calls the parser. -
  • Lemon uses no global variables. Yacc and bison use global variables - to pass information between the tokenizer and parser. -
  • Lemon allows multiple parsers to be running simultaneously. Yacc - and bison do not. -
-These differences may cause some initial confusion for programmers -with prior yacc and bison experience. -But after years of experience using Lemon, I firmly -believe that the Lemon way of doing things is better.

- -

Input File Syntax

- -

The main purpose of the grammar specification file for Lemon is -to define the grammar for the parser. But the input file also -specifies additional information Lemon requires to do its job. -Most of the work in using Lemon is in writing an appropriate -grammar file.

- -

The grammar file for lemon is, for the most part, free format. -It does not have sections or divisions like yacc or bison. Any -declaration can occur at any point in the file. -Lemon ignores whitespace (except where it is needed to separate -tokens) and it honors the same commenting conventions as C and C++.

- -

Terminals and Nonterminals

- -

A terminal symbol (token) is any string of alphanumeric -and underscore characters -that begins with an upper case letter. -A terminal can contain lowercase letters after the first character, -but the usual convention is to make terminals all upper case. -A nonterminal, on the other hand, is any string of alphanumeric -and underscore characters than begins with a lower case letter. -Again, the usual convention is to make nonterminals use all lower -case letters.

- -

In Lemon, terminal and nonterminal symbols do not need to -be declared or identified in a separate section of the grammar file. -Lemon is able to generate a list of all terminals and nonterminals -by examining the grammar rules, and it can always distinguish a -terminal from a nonterminal by checking the case of the first -character of the name.

- -

Yacc and bison allow terminal symbols to have either alphanumeric -names or to be individual characters included in single quotes, like -this: ')' or '$'. Lemon does not allow this alternative form for -terminal symbols. With Lemon, all symbols, terminals and nonterminals, -must have alphanumeric names.

- -

Grammar Rules

- -

The main component of a Lemon grammar file is a sequence of grammar -rules. -Each grammar rule consists of a nonterminal symbol followed by -the special symbol ``::='' and then a list of terminals and/or nonterminals. -The rule is terminated by a period. -The list of terminals and nonterminals on the right-hand side of the -rule can be empty. -Rules can occur in any order, except that the left-hand side of the -first rule is assumed to be the start symbol for the grammar (unless -specified otherwise using the %start directive described below.) -A typical sequence of grammar rules might look something like this: -

-  expr ::= expr PLUS expr.
-  expr ::= expr TIMES expr.
-  expr ::= LPAREN expr RPAREN.
-  expr ::= VALUE.
-
-

- -

There is one non-terminal in this example, ``expr'', and five -terminal symbols or tokens: ``PLUS'', ``TIMES'', ``LPAREN'', -``RPAREN'' and ``VALUE''.

- -

Like yacc and bison, Lemon allows the grammar to specify a block -of C code that will be executed whenever a grammar rule is reduced -by the parser. -In Lemon, this action is specified by putting the C code (contained -within curly braces {...}) immediately after the -period that closes the rule. -For example: -

-  expr ::= expr PLUS expr.   { printf("Doing an addition...\n"); }
-
-

- -

In order to be useful, grammar actions must normally be linked to -their associated grammar rules. -In yacc and bison, this is accomplished by embedding a ``$$'' in the -action to stand for the value of the left-hand side of the rule and -symbols ``$1'', ``$2'', and so forth to stand for the value of -the terminal or nonterminal at position 1, 2 and so forth on the -right-hand side of the rule. -This idea is very powerful, but it is also very error-prone. The -single most common source of errors in a yacc or bison grammar is -to miscount the number of symbols on the right-hand side of a grammar -rule and say ``$7'' when you really mean ``$8''.

- -

Lemon avoids the need to count grammar symbols by assigning symbolic -names to each symbol in a grammar rule and then using those symbolic -names in the action. -In yacc or bison, one would write this: -

-  expr -> expr PLUS expr  { $$ = $1 + $3; };
-
-But in Lemon, the same rule becomes the following: -
-  expr(A) ::= expr(B) PLUS expr(C).  { A = B+C; }
-
-In the Lemon rule, any symbol in parentheses after a grammar rule -symbol becomes a place holder for that symbol in the grammar rule. -This place holder can then be used in the associated C action to -stand for the value of that symbol.

- -

The Lemon notation for linking a grammar rule with its reduce -action is superior to yacc/bison on several counts. -First, as mentioned above, the Lemon method avoids the need to -count grammar symbols. -Secondly, if a terminal or nonterminal in a Lemon grammar rule -includes a linking symbol in parentheses but that linking symbol -is not actually used in the reduce action, then an error message -is generated. -For example, the rule -

-  expr(A) ::= expr(B) PLUS expr(C).  { A = B; }
-
-will generate an error because the linking symbol ``C'' is used -in the grammar rule but not in the reduce action.

- -

The Lemon notation for linking grammar rules to reduce actions -also facilitates the use of destructors for reclaiming memory -allocated by the values of terminals and nonterminals on the -right-hand side of a rule.

- -

Precedence Rules

- -

Lemon resolves parsing ambiguities in exactly the same way as -yacc and bison. A shift-reduce conflict is resolved in favor -of the shift, and a reduce-reduce conflict is resolved by reducing -whichever rule comes first in the grammar file.

- -

Just like in -yacc and bison, Lemon allows a measure of control -over the resolution of paring conflicts using precedence rules. -A precedence value can be assigned to any terminal symbol -using the %left, %right or %nonassoc directives. Terminal symbols -mentioned in earlier directives have a lower precedence that -terminal symbols mentioned in later directives. For example:

- -

-   %left AND.
-   %left OR.
-   %nonassoc EQ NE GT GE LT LE.
-   %left PLUS MINUS.
-   %left TIMES DIVIDE MOD.
-   %right EXP NOT.
-

- -

In the preceding sequence of directives, the AND operator is -defined to have the lowest precedence. The OR operator is one -precedence level higher. And so forth. Hence, the grammar would -attempt to group the ambiguous expression -

-     a AND b OR c
-
-like this -
-     a AND (b OR c).
-
-The associativity (left, right or nonassoc) is used to determine -the grouping when the precedence is the same. AND is left-associative -in our example, so -
-     a AND b AND c
-
-is parsed like this -
-     (a AND b) AND c.
-
-The EXP operator is right-associative, though, so -
-     a EXP b EXP c
-
-is parsed like this -
-     a EXP (b EXP c).
-
-The nonassoc precedence is used for non-associative operators. -So -
-     a EQ b EQ c
-
-is an error.

- -

The precedence of non-terminals is transferred to rules as follows: -The precedence of a grammar rule is equal to the precedence of the -left-most terminal symbol in the rule for which a precedence is -defined. This is normally what you want, but in those cases where -you want to precedence of a grammar rule to be something different, -you can specify an alternative precedence symbol by putting the -symbol in square braces after the period at the end of the rule and -before any C-code. For example:

- -

-   expr = MINUS expr.  [NOT]
-

- -

This rule has a precedence equal to that of the NOT symbol, not the -MINUS symbol as would have been the case by default.

- -

With the knowledge of how precedence is assigned to terminal -symbols and individual -grammar rules, we can now explain precisely how parsing conflicts -are resolved in Lemon. Shift-reduce conflicts are resolved -as follows: -

    -
  • If either the token to be shifted or the rule to be reduced - lacks precedence information, then resolve in favor of the - shift, but report a parsing conflict. -
  • If the precedence of the token to be shifted is greater than - the precedence of the rule to reduce, then resolve in favor - of the shift. No parsing conflict is reported. -
  • If the precedence of the token it be shifted is less than the - precedence of the rule to reduce, then resolve in favor of the - reduce action. No parsing conflict is reported. -
  • If the precedences are the same and the shift token is - right-associative, then resolve in favor of the shift. - No parsing conflict is reported. -
  • If the precedences are the same the the shift token is - left-associative, then resolve in favor of the reduce. - No parsing conflict is reported. -
  • Otherwise, resolve the conflict by doing the shift and - report the parsing conflict. -
-Reduce-reduce conflicts are resolved this way: -
    -
  • If either reduce rule - lacks precedence information, then resolve in favor of the - rule that appears first in the grammar and report a parsing - conflict. -
  • If both rules have precedence and the precedence is different - then resolve the dispute in favor of the rule with the highest - precedence and do not report a conflict. -
  • Otherwise, resolve the conflict by reducing by the rule that - appears first in the grammar and report a parsing conflict. -
- -

Special Directives

- -

The input grammar to Lemon consists of grammar rules and special -directives. We've described all the grammar rules, so now we'll -talk about the special directives.

- -

Directives in lemon can occur in any order. You can put them before -the grammar rules, or after the grammar rules, or in the mist of the -grammar rules. It doesn't matter. The relative order of -directives used to assign precedence to terminals is important, but -other than that, the order of directives in Lemon is arbitrary.

- -

Lemon supports the following special directives: -

    -
  • %code -
  • %default_destructor -
  • %default_type -
  • %destructor -
  • %extra_argument -
  • %include -
  • %left -
  • %name -
  • %nonassoc -
  • %parse_accept -
  • %parse_failure -
  • %right -
  • %stack_overflow -
  • %stack_size -
  • %start_symbol -
  • %syntax_error -
  • %token_destructor -
  • %token_prefix -
  • %token_type -
  • %type -
-Each of these directives will be described separately in the -following sections:

- -

The %code directive

- -

The %code directive is used to specify addition C/C++ code that -is added to the end of the main output file. This is similar to -the %include directive except that %include is inserted at the -beginning of the main output file.

- -

%code is typically used to include some action routines or perhaps -a tokenizer as part of the output file.

- -

The %default_destructor directive

- -

The %default_destructor directive specifies a destructor to -use for non-terminals that do not have their own destructor -specified by a separate %destructor directive. See the documentation -on the %destructor directive below for additional information.

- -

In some grammers, many different non-terminal symbols have the -same datatype and hence the same destructor. This directive is -a convenience way to specify the same destructor for all those -non-terminals using a single statement.

- -

The %default_type directive

- -

The %default_type directive specifies the datatype of non-terminal -symbols that do no have their own datatype defined using a separate -%type directive. See the documentation on %type below for addition -information.

- -

The %destructor directive

- -

The %destructor directive is used to specify a destructor for -a non-terminal symbol. -(See also the %token_destructor directive which is used to -specify a destructor for terminal symbols.)

- -

A non-terminal's destructor is called to dispose of the -non-terminal's value whenever the non-terminal is popped from -the stack. This includes all of the following circumstances: -

    -
  • When a rule reduces and the value of a non-terminal on - the right-hand side is not linked to C code. -
  • When the stack is popped during error processing. -
  • When the ParseFree() function runs. -
-The destructor can do whatever it wants with the value of -the non-terminal, but its design is to deallocate memory -or other resources held by that non-terminal.

- -

Consider an example: -

-   %type nt {void*}
-   %destructor nt { free($$); }
-   nt(A) ::= ID NUM.   { A = malloc( 100 ); }
-
-This example is a bit contrived but it serves to illustrate how -destructors work. The example shows a non-terminal named -``nt'' that holds values of type ``void*''. When the rule for -an ``nt'' reduces, it sets the value of the non-terminal to -space obtained from malloc(). Later, when the nt non-terminal -is popped from the stack, the destructor will fire and call -free() on this malloced space, thus avoiding a memory leak. -(Note that the symbol ``$$'' in the destructor code is replaced -by the value of the non-terminal.)

- -

It is important to note that the value of a non-terminal is passed -to the destructor whenever the non-terminal is removed from the -stack, unless the non-terminal is used in a C-code action. If -the non-terminal is used by C-code, then it is assumed that the -C-code will take care of destroying it if it should really -be destroyed. More commonly, the value is used to build some -larger structure and we don't want to destroy it, which is why -the destructor is not called in this circumstance.

- -

By appropriate use of destructors, it is possible to -build a parser using Lemon that can be used within a long-running -program, such as a GUI, that will not leak memory or other resources. -To do the same using yacc or bison is much more difficult.

- -

The %extra_argument directive

- -The %extra_argument directive instructs Lemon to add a 4th parameter -to the parameter list of the Parse() function it generates. Lemon -doesn't do anything itself with this extra argument, but it does -make the argument available to C-code action routines, destructors, -and so forth. For example, if the grammar file contains:

- -

-    %extra_argument { MyStruct *pAbc }
-

- -

Then the Parse() function generated will have an 4th parameter -of type ``MyStruct*'' and all action routines will have access to -a variable named ``pAbc'' that is the value of the 4th parameter -in the most recent call to Parse().

- -

The %include directive

- -

The %include directive specifies C code that is included at the -top of the generated parser. You can include any text you want -- -the Lemon parser generator copies it blindly. If you have multiple -%include directives in your grammar file the value of the last -%include directive overwrites all the others.The %include directive is very handy for getting some extra #include -preprocessor statements at the beginning of the generated parser. -For example:

- -

-   %include {#include <unistd.h>}
-

- -

This might be needed, for example, if some of the C actions in the -grammar call functions that are prototyed in unistd.h.

- -

The %left directive

- -The %left directive is used (along with the %right and -%nonassoc directives) to declare precedences of terminal -symbols. Every terminal symbol whose name appears after -a %left directive but before the next period (``.'') is -given the same left-associative precedence value. Subsequent -%left directives have higher precedence. For example:

- -

-   %left AND.
-   %left OR.
-   %nonassoc EQ NE GT GE LT LE.
-   %left PLUS MINUS.
-   %left TIMES DIVIDE MOD.
-   %right EXP NOT.
-

- -

Note the period that terminates each %left, %right or %nonassoc -directive.

- -

LALR(1) grammars can get into a situation where they require -a large amount of stack space if you make heavy use or right-associative -operators. For this reason, it is recommended that you use %left -rather than %right whenever possible.

- -

The %name directive

- -

By default, the functions generated by Lemon all begin with the -five-character string ``Parse''. You can change this string to something -different using the %name directive. For instance:

- -

-   %name Abcde
-

- -

Putting this directive in the grammar file will cause Lemon to generate -functions named -

    -
  • AbcdeAlloc(), -
  • AbcdeFree(), -
  • AbcdeTrace(), and -
  • Abcde(). -
-The %name directive allows you to generator two or more different -parsers and link them all into the same executable. -

- -

The %nonassoc directive

- -

This directive is used to assign non-associative precedence to -one or more terminal symbols. See the section on precedence rules -or on the %left directive for additional information.

- -

The %parse_accept directive

- -

The %parse_accept directive specifies a block of C code that is -executed whenever the parser accepts its input string. To ``accept'' -an input string means that the parser was able to process all tokens -without error.

- -

For example:

- -

-   %parse_accept {
-      printf("parsing complete!\n");
-   }
-

- - -

The %parse_failure directive

- -

The %parse_failure directive specifies a block of C code that -is executed whenever the parser fails complete. This code is not -executed until the parser has tried and failed to resolve an input -error using is usual error recovery strategy. The routine is -only invoked when parsing is unable to continue.

- -

-   %parse_failure {
-     fprintf(stderr,"Giving up.  Parser is hopelessly lost...\n");
-   }
-

- -

The %right directive

- -

This directive is used to assign right-associative precedence to -one or more terminal symbols. See the section on precedence rules -or on the %left directive for additional information.

- -

The %stack_overflow directive

- -

The %stack_overflow directive specifies a block of C code that -is executed if the parser's internal stack ever overflows. Typically -this just prints an error message. After a stack overflow, the parser -will be unable to continue and must be reset.

- -

-   %stack_overflow {
-     fprintf(stderr,"Giving up.  Parser stack overflow\n");
-   }
-

- -

You can help prevent parser stack overflows by avoiding the use -of right recursion and right-precedence operators in your grammar. -Use left recursion and and left-precedence operators instead, to -encourage rules to reduce sooner and keep the stack size down. -For example, do rules like this: -

-   list ::= list element.      // left-recursion.  Good!
-   list ::= .
-
-Not like this: -
-   list ::= element list.      // right-recursion.  Bad!
-   list ::= .
-
- -

The %stack_size directive

- -

If stack overflow is a problem and you can't resolve the trouble -by using left-recursion, then you might want to increase the size -of the parser's stack using this directive. Put an positive integer -after the %stack_size directive and Lemon will generate a parse -with a stack of the requested size. The default value is 100.

- -

-   %stack_size 2000
-

- -

The %start_symbol directive

- -

By default, the start-symbol for the grammar that Lemon generates -is the first non-terminal that appears in the grammar file. But you -can choose a different start-symbol using the %start_symbol directive.

- -

-   %start_symbol  prog
-

- -

The %token_destructor directive

- -

The %destructor directive assigns a destructor to a non-terminal -symbol. (See the description of the %destructor directive above.) -This directive does the same thing for all terminal symbols.

- -

Unlike non-terminal symbols which may each have a different data type -for their values, terminals all use the same data type (defined by -the %token_type directive) and so they use a common destructor. Other -than that, the token destructor works just like the non-terminal -destructors.

- -

The %token_prefix directive

- -

Lemon generates #defines that assign small integer constants -to each terminal symbol in the grammar. If desired, Lemon will -add a prefix specified by this directive -to each of the #defines it generates. -So if the default output of Lemon looked like this: -

-    #define AND              1
-    #define MINUS            2
-    #define OR               3
-    #define PLUS             4
-
-You can insert a statement into the grammar like this: -
-    %token_prefix    TOKEN_
-
-to cause Lemon to produce these symbols instead: -
-    #define TOKEN_AND        1
-    #define TOKEN_MINUS      2
-    #define TOKEN_OR         3
-    #define TOKEN_PLUS       4
-
- -

The %token_type and %type directives

- -

These directives are used to specify the data types for values -on the parser's stack associated with terminal and non-terminal -symbols. The values of all terminal symbols must be of the same -type. This turns out to be the same data type as the 3rd parameter -to the Parse() function generated by Lemon. Typically, you will -make the value of a terminal symbol by a pointer to some kind of -token structure. Like this:

- -

-   %token_type    {Token*}
-

- -

If the data type of terminals is not specified, the default value -is ``int''.

- -

Non-terminal symbols can each have their own data types. Typically -the data type of a non-terminal is a pointer to the root of a parse-tree -structure that contains all information about that non-terminal. -For example:

- -

-   %type   expr  {Expr*}
-

- -

Each entry on the parser's stack is actually a union containing -instances of all data types for every non-terminal and terminal symbol. -Lemon will automatically use the correct element of this union depending -on what the corresponding non-terminal or terminal symbol is. But -the grammar designer should keep in mind that the size of the union -will be the size of its largest element. So if you have a single -non-terminal whose data type requires 1K of storage, then your 100 -entry parser stack will require 100K of heap space. If you are willing -and able to pay that price, fine. You just need to know.

- -

Error Processing

- -

After extensive experimentation over several years, it has been -discovered that the error recovery strategy used by yacc is about -as good as it gets. And so that is what Lemon uses.

- -

When a Lemon-generated parser encounters a syntax error, it -first invokes the code specified by the %syntax_error directive, if -any. It then enters its error recovery strategy. The error recovery -strategy is to begin popping the parsers stack until it enters a -state where it is permitted to shift a special non-terminal symbol -named ``error''. It then shifts this non-terminal and continues -parsing. But the %syntax_error routine will not be called again -until at least three new tokens have been successfully shifted.

- -

If the parser pops its stack until the stack is empty, and it still -is unable to shift the error symbol, then the %parse_failed routine -is invoked and the parser resets itself to its start state, ready -to begin parsing a new file. This is what will happen at the very -first syntax error, of course, if there are no instances of the -``error'' non-terminal in your grammar.

- - - diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/doc/pager-invariants.txt b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/doc/pager-invariants.txt deleted file mode 100644 index 279628c1fd..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/doc/pager-invariants.txt +++ /dev/null @@ -1,76 +0,0 @@ - *** Throughout this document, a page is deemed to have been synced - automatically as soon as it is written when PRAGMA synchronous=OFF. - Otherwise, the page is not synced until the xSync method of the VFS - is called successfully on the file containing the page. - - *** Definition: A page of the database file is said to be "overwriteable" if - one or more of the following are true about the page: - - (a) The original content of the page as it was at the beginning of - the transaction has been written into the rollback journal and - synced. - - (b) The page was a freelist leaf page at the start of the transaction. - - (c) The page number is greater than the largest page that existed in - the database file at the start of the transaction. - - (1) A page of the database file is never overwritten unless one of the - following are true: - - (a) The page and all other pages on the same sector are overwriteable. - - (b) The atomic page write optimization is enabled, and the entire - transaction other than the update of the transaction sequence - number consists of a single page change. - - (2) The content of a page written into the rollback journal exactly matches - both the content in the database when the rollback journal was written - and the content in the database at the beginning of the current - transaction. - - (3) Writes to the database file are an integer multiple of the page size - in length and are aligned to a page boundary. - - (4) Reads from the database file are either aligned on a page boundary and - an integer multiple of the page size in length or are taken from the - first 100 bytes of the database file. - - (5) All writes to the database file are synced prior to the rollback journal - being deleted, truncated, or zeroed. - - (6) If a master journal file is used, then all writes to the database file - are synced prior to the master journal being deleted. - - *** Definition: Two databases (or the same database at two points it time) - are said to be "logically equivalent" if they give the same answer to - all queries. Note in particular the the content of freelist leaf - pages can be changed arbitarily without effecting the logical equivalence - of the database. - - (7) At any time, if any subset, including the empty set and the total set, - of the unsynced changes to a rollback journal are removed and the - journal is rolled back, the resulting database file will be logical - equivalent to the database file at the beginning of the transaction. - - (8) When a transaction is rolled back, the xTruncate method of the VFS - is called to restore the database file to the same size it was at - the beginning of the transaction. (In some VFSes, the xTruncate - method is a no-op, but that does not change the fact the SQLite will - invoke it.) - - (9) Whenever the database file is modified, at least one bit in the range - of bytes from 24 through 39 inclusive will be changed prior to releasing - the EXCLUSIVE lock. - -(10) The pattern of bits in bytes 24 through 39 shall not repeat in less - than one billion transactions. - -(11) A database file is well-formed at the beginning and at the conclusion - of every transaction. - -(12) An EXCLUSIVE lock must be held on the database file before making - any changes to the database file. - -(13) A SHARED lock must be held on the database file before reading any - content out of the database file. diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/doc/vfs-shm.txt b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/doc/vfs-shm.txt deleted file mode 100644 index 9f2576114a..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/doc/vfs-shm.txt +++ /dev/null @@ -1,130 +0,0 @@ -The 5 states of an historical rollback lock as implemented by the -xLock, xUnlock, and xCheckReservedLock methods of the sqlite3_io_methods -objec are: - - UNLOCKED - SHARED - RESERVED - PENDING - EXCLUSIVE - -The wal-index file has a similar locking hierarchy implemented using -the xShmLock method of the sqlite3_vfs object, but with 7 -states. Each connection to a wal-index file must be in one of -the following 7 states: - - UNLOCKED - READ - READ_FULL - WRITE - PENDING - CHECKPOINT - RECOVER - -These roughly correspond to the 5 states of a rollback lock except -that SHARED is split out into 2 states: READ and READ_FULL and -there is an extra RECOVER state used for wal-index reconstruction. - -The meanings of the various wal-index locking states is as follows: - - UNLOCKED - The wal-index is not in use. - - READ - Some prefix of the wal-index is being read. Additional - wal-index information can be appended at any time. The - newly appended content will be ignored by the holder of - the READ lock. - - READ_FULL - The entire wal-index is being read. No new information - can be added to the wal-index. The holder of a READ_FULL - lock promises never to read pages from the database file - that are available anywhere in the wal-index. - - WRITE - It is OK to append to the wal-index file and to adjust - the header to indicate the new "last valid frame". - - PENDING - Waiting on all READ locks to clear so that a - CHECKPOINT lock can be acquired. - - CHECKPOINT - It is OK to write any WAL data into the database file - and zero the last valid frame field of the wal-index - header. The wal-index file itself may not be changed - other than to zero the last valid frame field in the - header. - - RECOVER - Held during wal-index recovery. Used to prevent a - race if multiple clients try to recover a wal-index at - the same time. - - -A particular lock manager implementation may coalesce one or more of -the wal-index locking states, though with a reduction in concurrency. -For example, an implemention might implement only exclusive locking, -in which case all states would be equivalent to CHECKPOINT, meaning that -only one reader or one writer or one checkpointer could be active at a -time. Or, an implementation might combine READ and READ_FULL into -a single state equivalent to READ, meaning that a writer could -coexist with a reader, but no reader or writers could coexist with a -checkpointer. - -The lock manager must obey the following rules: - -(1) A READ cannot coexist with CHECKPOINT. -(2) A READ_FULL cannot coexist with WRITE. -(3) None of WRITE, PENDING, CHECKPOINT, or RECOVER can coexist. - -The SQLite core will obey the next set of rules. These rules are -assertions on the behavior of the SQLite core which might be verified -during testing using an instrumented lock manager. - -(5) No part of the wal-index will be read without holding either some - kind of SHM lock or an EXCLUSIVE lock on the original database. - The original database is the file named in the 2nd parameter to - the xShmOpen method. - -(6) A holder of a READ_FULL will never read any page of the database - file that is contained anywhere in the wal-index. - -(7) No part of the wal-index other than the header will be written nor - will the size of the wal-index grow without holding a WRITE or - an EXCLUSIVE on the original database file. - -(8) The wal-index header will not be written without holding one of - WRITE, CHECKPOINT, or RECOVER on the wal-index or an EXCLUSIVE on - the original database files. - -(9) A CHECKPOINT or RECOVER must be held on the wal-index, or an - EXCLUSIVE on the original database file, in order to reset the - last valid frame counter in the header of the wal-index back to zero. - -(10) A WRITE can only increase the last valid frame pointer in the header. - -The SQLite core will only ever send requests for UNLOCK, READ, WRITE, -CHECKPOINT, or RECOVER to the lock manager. The SQLite core will never -request a READ_FULL or PENDING lock though the lock manager may deliver -those locking states in response to READ and CHECKPOINT requests, -respectively, if and only if the requested READ or CHECKPOINT cannot -be delivered. - -The following are the allowed lock transitions: - - Original-State Request New-State - -------------- ---------- ---------- -(11a) UNLOCK READ READ -(11b) UNLOCK READ READ_FULL -(11c) UNLOCK CHECKPOINT PENDING -(11d) UNLOCK CHECKPOINT CHECKPOINT -(11e) READ UNLOCK UNLOCK -(11f) READ WRITE WRITE -(11g) READ RECOVER RECOVER -(11h) READ_FULL UNLOCK UNLOCK -(11i) READ_FULL WRITE WRITE -(11j) READ_FULL RECOVER RECOVER -(11k) WRITE READ READ -(11l) PENDING UNLOCK UNLOCK -(11m) PENDING CHECKPOINT CHECKPOINT -(11n) CHECKPOINT UNLOCK UNLOCK -(11o) RECOVER READ READ - -These 15 transitions are all that needs to be supported. The lock -manager implementation can assert that fact. The other 27 possible -transitions among the 7 locking states will never occur. diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/README.txt b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/README.txt deleted file mode 100644 index 6a5244a68d..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/README.txt +++ /dev/null @@ -1,2 +0,0 @@ -Version loadable extensions to SQLite are found in subfolders -of this folder. diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/async/README.txt b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/async/README.txt deleted file mode 100644 index 6a17d847d2..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/async/README.txt +++ /dev/null @@ -1,164 +0,0 @@ - -Normally, when SQLite writes to a database file, it waits until the write -operation is finished before returning control to the calling application. -Since writing to the file-system is usually very slow compared with CPU -bound operations, this can be a performance bottleneck. This directory -contains an extension that causes SQLite to perform all write requests -using a separate thread running in the background. Although this does not -reduce the overall system resources (CPU, disk bandwidth etc.) at all, it -allows SQLite to return control to the caller quickly even when writing to -the database, eliminating the bottleneck. - - 1. Functionality - - 1.1 How it Works - 1.2 Limitations - 1.3 Locking and Concurrency - - 2. Compilation and Usage - - 3. Porting - - - -1. FUNCTIONALITY - - With asynchronous I/O, write requests are handled by a separate thread - running in the background. This means that the thread that initiates - a database write does not have to wait for (sometimes slow) disk I/O - to occur. The write seems to happen very quickly, though in reality - it is happening at its usual slow pace in the background. - - Asynchronous I/O appears to give better responsiveness, but at a price. - You lose the Durable property. With the default I/O backend of SQLite, - once a write completes, you know that the information you wrote is - safely on disk. With the asynchronous I/O, this is not the case. If - your program crashes or if a power loss occurs after the database - write but before the asynchronous write thread has completed, then the - database change might never make it to disk and the next user of the - database might not see your change. - - You lose Durability with asynchronous I/O, but you still retain the - other parts of ACID: Atomic, Consistent, and Isolated. Many - appliations get along fine without the Durablity. - - 1.1 How it Works - - Asynchronous I/O works by creating a special SQLite "vfs" structure - and registering it with sqlite3_vfs_register(). When files opened via - this vfs are written to (using the vfs xWrite() method), the data is not - written directly to disk, but is placed in the "write-queue" to be - handled by the background thread. - - When files opened with the asynchronous vfs are read from - (using the vfs xRead() method), the data is read from the file on - disk and the write-queue, so that from the point of view of - the vfs reader the xWrite() appears to have already completed. - - The special vfs is registered (and unregistered) by calls to the - API functions sqlite3async_initialize() and sqlite3async_shutdown(). - See section "Compilation and Usage" below for details. - - 1.2 Limitations - - In order to gain experience with the main ideas surrounding asynchronous - IO, this implementation is deliberately kept simple. Additional - capabilities may be added in the future. - - For example, as currently implemented, if writes are happening at a - steady stream that exceeds the I/O capability of the background writer - thread, the queue of pending write operations will grow without bound. - If this goes on for long enough, the host system could run out of memory. - A more sophisticated module could to keep track of the quantity of - pending writes and stop accepting new write requests when the queue of - pending writes grows too large. - - 1.3 Locking and Concurrency - - Multiple connections from within a single process that use this - implementation of asynchronous IO may access a single database - file concurrently. From the point of view of the user, if all - connections are from within a single process, there is no difference - between the concurrency offered by "normal" SQLite and SQLite - using the asynchronous backend. - - If file-locking is enabled (it is enabled by default), then connections - from multiple processes may also read and write the database file. - However concurrency is reduced as follows: - - * When a connection using asynchronous IO begins a database - transaction, the database is locked immediately. However the - lock is not released until after all relevant operations - in the write-queue have been flushed to disk. This means - (for example) that the database may remain locked for some - time after a "COMMIT" or "ROLLBACK" is issued. - - * If an application using asynchronous IO executes transactions - in quick succession, other database users may be effectively - locked out of the database. This is because when a BEGIN - is executed, a database lock is established immediately. But - when the corresponding COMMIT or ROLLBACK occurs, the lock - is not released until the relevant part of the write-queue - has been flushed through. As a result, if a COMMIT is followed - by a BEGIN before the write-queue is flushed through, the database - is never unlocked,preventing other processes from accessing - the database. - - File-locking may be disabled at runtime using the sqlite3async_control() - API (see below). This may improve performance when an NFS or other - network file-system, as the synchronous round-trips to the server be - required to establish file locks are avoided. However, if multiple - connections attempt to access the same database file when file-locking - is disabled, application crashes and database corruption is a likely - outcome. - - -2. COMPILATION AND USAGE - - The asynchronous IO extension consists of a single file of C code - (sqlite3async.c), and a header file (sqlite3async.h) that defines the - C API used by applications to activate and control the modules - functionality. - - To use the asynchronous IO extension, compile sqlite3async.c as - part of the application that uses SQLite. Then use the API defined - in sqlite3async.h to initialize and configure the module. - - The asynchronous IO VFS API is described in detail in comments in - sqlite3async.h. Using the API usually consists of the following steps: - - 1. Register the asynchronous IO VFS with SQLite by calling the - sqlite3async_initialize() function. - - 2. Create a background thread to perform write operations and call - sqlite3async_run(). - - 3. Use the normal SQLite API to read and write to databases via - the asynchronous IO VFS. - - Refer to sqlite3async.h for details. - - -3. PORTING - - Currently the asynchronous IO extension is compatible with win32 systems - and systems that support the pthreads interface, including Mac OSX, Linux, - and other varieties of Unix. - - To port the asynchronous IO extension to another platform, the user must - implement mutex and condition variable primitives for the new platform. - Currently there is no externally available interface to allow this, but - modifying the code within sqlite3async.c to include the new platforms - concurrency primitives is relatively easy. Search within sqlite3async.c - for the comment string "PORTING FUNCTIONS" for details. Then implement - new versions of each of the following: - - static void async_mutex_enter(int eMutex); - static void async_mutex_leave(int eMutex); - static void async_cond_wait(int eCond, int eMutex); - static void async_cond_signal(int eCond); - static void async_sched_yield(void); - - The functionality required of each of the above functions is described - in comments in sqlite3async.c. - diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/async/sqlite3async.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/async/sqlite3async.c deleted file mode 100644 index e933cf89d4..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/async/sqlite3async.c +++ /dev/null @@ -1,1697 +0,0 @@ -/* -** 2005 December 14 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** -** $Id: sqlite3async.c,v 1.7 2009/07/18 11:52:04 danielk1977 Exp $ -** -** This file contains the implementation of an asynchronous IO backend -** for SQLite. -*/ - -#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_ASYNCIO) - -#include "sqlite3async.h" -#include "sqlite3.h" -#include -#include -#include - -/* Useful macros used in several places */ -#define MIN(x,y) ((x)<(y)?(x):(y)) -#define MAX(x,y) ((x)>(y)?(x):(y)) - -#ifndef SQLITE_AMALGAMATION -/* Macro to mark parameters as unused and silence compiler warnings. */ -#define UNUSED_PARAMETER(x) (void)(x) -#endif - -/* Forward references */ -typedef struct AsyncWrite AsyncWrite; -typedef struct AsyncFile AsyncFile; -typedef struct AsyncFileData AsyncFileData; -typedef struct AsyncFileLock AsyncFileLock; -typedef struct AsyncLock AsyncLock; - -/* Enable for debugging */ -#ifndef NDEBUG -#include -static int sqlite3async_trace = 0; -# define ASYNC_TRACE(X) if( sqlite3async_trace ) asyncTrace X -static void asyncTrace(const char *zFormat, ...){ - char *z; - va_list ap; - va_start(ap, zFormat); - z = sqlite3_vmprintf(zFormat, ap); - va_end(ap); - fprintf(stderr, "[%d] %s", 0 /* (int)pthread_self() */, z); - sqlite3_free(z); -} -#else -# define ASYNC_TRACE(X) -#endif - -/* -** THREAD SAFETY NOTES -** -** Basic rules: -** -** * Both read and write access to the global write-op queue must be -** protected by the async.queueMutex. As are the async.ioError and -** async.nFile variables. -** -** * The async.pLock list and all AsyncLock and AsyncFileLock -** structures must be protected by the async.lockMutex mutex. -** -** * The file handles from the underlying system are not assumed to -** be thread safe. -** -** * See the last two paragraphs under "The Writer Thread" for -** an assumption to do with file-handle synchronization by the Os. -** -** Deadlock prevention: -** -** There are three mutex used by the system: the "writer" mutex, -** the "queue" mutex and the "lock" mutex. Rules are: -** -** * It is illegal to block on the writer mutex when any other mutex -** are held, and -** -** * It is illegal to block on the queue mutex when the lock mutex -** is held. -** -** i.e. mutex's must be grabbed in the order "writer", "queue", "lock". -** -** File system operations (invoked by SQLite thread): -** -** xOpen -** xDelete -** xFileExists -** -** File handle operations (invoked by SQLite thread): -** -** asyncWrite, asyncClose, asyncTruncate, asyncSync -** -** The operations above add an entry to the global write-op list. They -** prepare the entry, acquire the async.queueMutex momentarily while -** list pointers are manipulated to insert the new entry, then release -** the mutex and signal the writer thread to wake up in case it happens -** to be asleep. -** -** -** asyncRead, asyncFileSize. -** -** Read operations. Both of these read from both the underlying file -** first then adjust their result based on pending writes in the -** write-op queue. So async.queueMutex is held for the duration -** of these operations to prevent other threads from changing the -** queue in mid operation. -** -** -** asyncLock, asyncUnlock, asyncCheckReservedLock -** -** These primitives implement in-process locking using a hash table -** on the file name. Files are locked correctly for connections coming -** from the same process. But other processes cannot see these locks -** and will therefore not honor them. -** -** -** The writer thread: -** -** The async.writerMutex is used to make sure only there is only -** a single writer thread running at a time. -** -** Inside the writer thread is a loop that works like this: -** -** WHILE (write-op list is not empty) -** Do IO operation at head of write-op list -** Remove entry from head of write-op list -** END WHILE -** -** The async.queueMutex is always held during the test, and when the entry is removed from the head -** of the write-op list. Sometimes it is held for the interim -** period (while the IO is performed), and sometimes it is -** relinquished. It is relinquished if (a) the IO op is an -** ASYNC_CLOSE or (b) when the file handle was opened, two of -** the underlying systems handles were opened on the same -** file-system entry. -** -** If condition (b) above is true, then one file-handle -** (AsyncFile.pBaseRead) is used exclusively by sqlite threads to read the -** file, the other (AsyncFile.pBaseWrite) by sqlite3_async_flush() -** threads to perform write() operations. This means that read -** operations are not blocked by asynchronous writes (although -** asynchronous writes may still be blocked by reads). -** -** This assumes that the OS keeps two handles open on the same file -** properly in sync. That is, any read operation that starts after a -** write operation on the same file system entry has completed returns -** data consistent with the write. We also assume that if one thread -** reads a file while another is writing it all bytes other than the -** ones actually being written contain valid data. -** -** If the above assumptions are not true, set the preprocessor symbol -** SQLITE_ASYNC_TWO_FILEHANDLES to 0. -*/ - - -#ifndef NDEBUG -# define TESTONLY( X ) X -#else -# define TESTONLY( X ) -#endif - -/* -** PORTING FUNCTIONS -** -** There are two definitions of the following functions. One for pthreads -** compatible systems and one for Win32. These functions isolate the OS -** specific code required by each platform. -** -** The system uses three mutexes and a single condition variable. To -** block on a mutex, async_mutex_enter() is called. The parameter passed -** to async_mutex_enter(), which must be one of ASYNC_MUTEX_LOCK, -** ASYNC_MUTEX_QUEUE or ASYNC_MUTEX_WRITER, identifies which of the three -** mutexes to lock. Similarly, to unlock a mutex, async_mutex_leave() is -** called with a parameter identifying the mutex being unlocked. Mutexes -** are not recursive - it is an error to call async_mutex_enter() to -** lock a mutex that is already locked, or to call async_mutex_leave() -** to unlock a mutex that is not currently locked. -** -** The async_cond_wait() and async_cond_signal() functions are modelled -** on the pthreads functions with similar names. The first parameter to -** both functions is always ASYNC_COND_QUEUE. When async_cond_wait() -** is called the mutex identified by the second parameter must be held. -** The mutex is unlocked, and the calling thread simultaneously begins -** waiting for the condition variable to be signalled by another thread. -** After another thread signals the condition variable, the calling -** thread stops waiting, locks mutex eMutex and returns. The -** async_cond_signal() function is used to signal the condition variable. -** It is assumed that the mutex used by the thread calling async_cond_wait() -** is held by the caller of async_cond_signal() (otherwise there would be -** a race condition). -** -** It is guaranteed that no other thread will call async_cond_wait() when -** there is already a thread waiting on the condition variable. -** -** The async_sched_yield() function is called to suggest to the operating -** system that it would be a good time to shift the current thread off the -** CPU. The system will still work if this function is not implemented -** (it is not currently implemented for win32), but it might be marginally -** more efficient if it is. -*/ -static void async_mutex_enter(int eMutex); -static void async_mutex_leave(int eMutex); -static void async_cond_wait(int eCond, int eMutex); -static void async_cond_signal(int eCond); -static void async_sched_yield(void); - -/* -** There are also two definitions of the following. async_os_initialize() -** is called when the asynchronous VFS is first installed, and os_shutdown() -** is called when it is uninstalled (from within sqlite3async_shutdown()). -** -** For pthreads builds, both of these functions are no-ops. For win32, -** they provide an opportunity to initialize and finalize the required -** mutex and condition variables. -** -** If async_os_initialize() returns other than zero, then the initialization -** fails and SQLITE_ERROR is returned to the user. -*/ -static int async_os_initialize(void); -static void async_os_shutdown(void); - -/* Values for use as the 'eMutex' argument of the above functions. The -** integer values assigned to these constants are important for assert() -** statements that verify that mutexes are locked in the correct order. -** Specifically, it is unsafe to try to lock mutex N while holding a lock -** on mutex M if (M<=N). -*/ -#define ASYNC_MUTEX_LOCK 0 -#define ASYNC_MUTEX_QUEUE 1 -#define ASYNC_MUTEX_WRITER 2 - -/* Values for use as the 'eCond' argument of the above functions. */ -#define ASYNC_COND_QUEUE 0 - -/************************************************************************* -** Start of OS specific code. -*/ -#if SQLITE_OS_WIN || defined(_WIN32) || defined(WIN32) || defined(__CYGWIN__) || defined(__MINGW32__) || defined(__BORLANDC__) - -#include - -/* The following block contains the win32 specific code. */ - -#define mutex_held(X) (GetCurrentThreadId()==primitives.aHolder[X]) - -static struct AsyncPrimitives { - int isInit; - DWORD aHolder[3]; - CRITICAL_SECTION aMutex[3]; - HANDLE aCond[1]; -} primitives = { 0 }; - -static int async_os_initialize(void){ - if( !primitives.isInit ){ - primitives.aCond[0] = CreateEvent(NULL, TRUE, FALSE, 0); - if( primitives.aCond[0]==NULL ){ - return 1; - } - InitializeCriticalSection(&primitives.aMutex[0]); - InitializeCriticalSection(&primitives.aMutex[1]); - InitializeCriticalSection(&primitives.aMutex[2]); - primitives.isInit = 1; - } - return 0; -} -static void async_os_shutdown(void){ - if( primitives.isInit ){ - DeleteCriticalSection(&primitives.aMutex[0]); - DeleteCriticalSection(&primitives.aMutex[1]); - DeleteCriticalSection(&primitives.aMutex[2]); - CloseHandle(primitives.aCond[0]); - primitives.isInit = 0; - } -} - -/* The following block contains the Win32 specific code. */ -static void async_mutex_enter(int eMutex){ - assert( eMutex==0 || eMutex==1 || eMutex==2 ); - assert( eMutex!=2 || (!mutex_held(0) && !mutex_held(1) && !mutex_held(2)) ); - assert( eMutex!=1 || (!mutex_held(0) && !mutex_held(1)) ); - assert( eMutex!=0 || (!mutex_held(0)) ); - EnterCriticalSection(&primitives.aMutex[eMutex]); - TESTONLY( primitives.aHolder[eMutex] = GetCurrentThreadId(); ) -} -static void async_mutex_leave(int eMutex){ - assert( eMutex==0 || eMutex==1 || eMutex==2 ); - assert( mutex_held(eMutex) ); - TESTONLY( primitives.aHolder[eMutex] = 0; ) - LeaveCriticalSection(&primitives.aMutex[eMutex]); -} -static void async_cond_wait(int eCond, int eMutex){ - ResetEvent(primitives.aCond[eCond]); - async_mutex_leave(eMutex); - WaitForSingleObject(primitives.aCond[eCond], INFINITE); - async_mutex_enter(eMutex); -} -static void async_cond_signal(int eCond){ - assert( mutex_held(ASYNC_MUTEX_QUEUE) ); - SetEvent(primitives.aCond[eCond]); -} -static void async_sched_yield(void){ - Sleep(0); -} -#else - -/* The following block contains the pthreads specific code. */ -#include -#include - -#define mutex_held(X) pthread_equal(primitives.aHolder[X], pthread_self()) - -static int async_os_initialize(void) {return 0;} -static void async_os_shutdown(void) {} - -static struct AsyncPrimitives { - pthread_mutex_t aMutex[3]; - pthread_cond_t aCond[1]; - pthread_t aHolder[3]; -} primitives = { - { PTHREAD_MUTEX_INITIALIZER, - PTHREAD_MUTEX_INITIALIZER, - PTHREAD_MUTEX_INITIALIZER - } , { - PTHREAD_COND_INITIALIZER - } , { 0, 0, 0 } -}; - -static void async_mutex_enter(int eMutex){ - assert( eMutex==0 || eMutex==1 || eMutex==2 ); - assert( eMutex!=2 || (!mutex_held(0) && !mutex_held(1) && !mutex_held(2)) ); - assert( eMutex!=1 || (!mutex_held(0) && !mutex_held(1)) ); - assert( eMutex!=0 || (!mutex_held(0)) ); - pthread_mutex_lock(&primitives.aMutex[eMutex]); - TESTONLY( primitives.aHolder[eMutex] = pthread_self(); ) -} -static void async_mutex_leave(int eMutex){ - assert( eMutex==0 || eMutex==1 || eMutex==2 ); - assert( mutex_held(eMutex) ); - TESTONLY( primitives.aHolder[eMutex] = 0; ) - pthread_mutex_unlock(&primitives.aMutex[eMutex]); -} -static void async_cond_wait(int eCond, int eMutex){ - assert( eMutex==0 || eMutex==1 || eMutex==2 ); - assert( mutex_held(eMutex) ); - TESTONLY( primitives.aHolder[eMutex] = 0; ) - pthread_cond_wait(&primitives.aCond[eCond], &primitives.aMutex[eMutex]); - TESTONLY( primitives.aHolder[eMutex] = pthread_self(); ) -} -static void async_cond_signal(int eCond){ - assert( mutex_held(ASYNC_MUTEX_QUEUE) ); - pthread_cond_signal(&primitives.aCond[eCond]); -} -static void async_sched_yield(void){ - sched_yield(); -} -#endif -/* -** End of OS specific code. -*************************************************************************/ - -#define assert_mutex_is_held(X) assert( mutex_held(X) ) - - -#ifndef SQLITE_ASYNC_TWO_FILEHANDLES -/* #define SQLITE_ASYNC_TWO_FILEHANDLES 0 */ -#define SQLITE_ASYNC_TWO_FILEHANDLES 1 -#endif - -/* -** State information is held in the static variable "async" defined -** as the following structure. -** -** Both async.ioError and async.nFile are protected by async.queueMutex. -*/ -static struct TestAsyncStaticData { - AsyncWrite *pQueueFirst; /* Next write operation to be processed */ - AsyncWrite *pQueueLast; /* Last write operation on the list */ - AsyncLock *pLock; /* Linked list of all AsyncLock structures */ - volatile int ioDelay; /* Extra delay between write operations */ - volatile int eHalt; /* One of the SQLITEASYNC_HALT_XXX values */ - volatile int bLockFiles; /* Current value of "lockfiles" parameter */ - int ioError; /* True if an IO error has occurred */ - int nFile; /* Number of open files (from sqlite pov) */ -} async = { 0,0,0,0,0,1,0,0 }; - -/* Possible values of AsyncWrite.op */ -#define ASYNC_NOOP 0 -#define ASYNC_WRITE 1 -#define ASYNC_SYNC 2 -#define ASYNC_TRUNCATE 3 -#define ASYNC_CLOSE 4 -#define ASYNC_DELETE 5 -#define ASYNC_OPENEXCLUSIVE 6 -#define ASYNC_UNLOCK 7 - -/* Names of opcodes. Used for debugging only. -** Make sure these stay in sync with the macros above! -*/ -static const char *azOpcodeName[] = { - "NOOP", "WRITE", "SYNC", "TRUNCATE", "CLOSE", "DELETE", "OPENEX", "UNLOCK" -}; - -/* -** Entries on the write-op queue are instances of the AsyncWrite -** structure, defined here. -** -** The interpretation of the iOffset and nByte variables varies depending -** on the value of AsyncWrite.op: -** -** ASYNC_NOOP: -** No values used. -** -** ASYNC_WRITE: -** iOffset -> Offset in file to write to. -** nByte -> Number of bytes of data to write (pointed to by zBuf). -** -** ASYNC_SYNC: -** nByte -> flags to pass to sqlite3OsSync(). -** -** ASYNC_TRUNCATE: -** iOffset -> Size to truncate file to. -** nByte -> Unused. -** -** ASYNC_CLOSE: -** iOffset -> Unused. -** nByte -> Unused. -** -** ASYNC_DELETE: -** iOffset -> Contains the "syncDir" flag. -** nByte -> Number of bytes of zBuf points to (file name). -** -** ASYNC_OPENEXCLUSIVE: -** iOffset -> Value of "delflag". -** nByte -> Number of bytes of zBuf points to (file name). -** -** ASYNC_UNLOCK: -** nByte -> Argument to sqlite3OsUnlock(). -** -** -** For an ASYNC_WRITE operation, zBuf points to the data to write to the file. -** This space is sqlite3_malloc()d along with the AsyncWrite structure in a -** single blob, so is deleted when sqlite3_free() is called on the parent -** structure. -*/ -struct AsyncWrite { - AsyncFileData *pFileData; /* File to write data to or sync */ - int op; /* One of ASYNC_xxx etc. */ - sqlite_int64 iOffset; /* See above */ - int nByte; /* See above */ - char *zBuf; /* Data to write to file (or NULL if op!=ASYNC_WRITE) */ - AsyncWrite *pNext; /* Next write operation (to any file) */ -}; - -/* -** An instance of this structure is created for each distinct open file -** (i.e. if two handles are opened on the one file, only one of these -** structures is allocated) and stored in the async.aLock hash table. The -** keys for async.aLock are the full pathnames of the opened files. -** -** AsyncLock.pList points to the head of a linked list of AsyncFileLock -** structures, one for each handle currently open on the file. -** -** If the opened file is not a main-database (the SQLITE_OPEN_MAIN_DB is -** not passed to the sqlite3OsOpen() call), or if async.bLockFiles is -** false, variables AsyncLock.pFile and AsyncLock.eLock are never used. -** Otherwise, pFile is a file handle opened on the file in question and -** used to obtain the file-system locks required by database connections -** within this process. -** -** See comments above the asyncLock() function for more details on -** the implementation of database locking used by this backend. -*/ -struct AsyncLock { - char *zFile; - int nFile; - sqlite3_file *pFile; - int eLock; - AsyncFileLock *pList; - AsyncLock *pNext; /* Next in linked list headed by async.pLock */ -}; - -/* -** An instance of the following structure is allocated along with each -** AsyncFileData structure (see AsyncFileData.lock), but is only used if the -** file was opened with the SQLITE_OPEN_MAIN_DB. -*/ -struct AsyncFileLock { - int eLock; /* Internally visible lock state (sqlite pov) */ - int eAsyncLock; /* Lock-state with write-queue unlock */ - AsyncFileLock *pNext; -}; - -/* -** The AsyncFile structure is a subclass of sqlite3_file used for -** asynchronous IO. -** -** All of the actual data for the structure is stored in the structure -** pointed to by AsyncFile.pData, which is allocated as part of the -** sqlite3OsOpen() using sqlite3_malloc(). The reason for this is that the -** lifetime of the AsyncFile structure is ended by the caller after OsClose() -** is called, but the data in AsyncFileData may be required by the -** writer thread after that point. -*/ -struct AsyncFile { - sqlite3_io_methods *pMethod; - AsyncFileData *pData; -}; -struct AsyncFileData { - char *zName; /* Underlying OS filename - used for debugging */ - int nName; /* Number of characters in zName */ - sqlite3_file *pBaseRead; /* Read handle to the underlying Os file */ - sqlite3_file *pBaseWrite; /* Write handle to the underlying Os file */ - AsyncFileLock lock; /* Lock state for this handle */ - AsyncLock *pLock; /* AsyncLock object for this file system entry */ - AsyncWrite closeOp; /* Preallocated close operation */ -}; - -/* -** Add an entry to the end of the global write-op list. pWrite should point -** to an AsyncWrite structure allocated using sqlite3_malloc(). The writer -** thread will call sqlite3_free() to free the structure after the specified -** operation has been completed. -** -** Once an AsyncWrite structure has been added to the list, it becomes the -** property of the writer thread and must not be read or modified by the -** caller. -*/ -static void addAsyncWrite(AsyncWrite *pWrite){ - /* We must hold the queue mutex in order to modify the queue pointers */ - if( pWrite->op!=ASYNC_UNLOCK ){ - async_mutex_enter(ASYNC_MUTEX_QUEUE); - } - - /* Add the record to the end of the write-op queue */ - assert( !pWrite->pNext ); - if( async.pQueueLast ){ - assert( async.pQueueFirst ); - async.pQueueLast->pNext = pWrite; - }else{ - async.pQueueFirst = pWrite; - } - async.pQueueLast = pWrite; - ASYNC_TRACE(("PUSH %p (%s %s %d)\n", pWrite, azOpcodeName[pWrite->op], - pWrite->pFileData ? pWrite->pFileData->zName : "-", pWrite->iOffset)); - - if( pWrite->op==ASYNC_CLOSE ){ - async.nFile--; - } - - /* The writer thread might have been idle because there was nothing - ** on the write-op queue for it to do. So wake it up. */ - async_cond_signal(ASYNC_COND_QUEUE); - - /* Drop the queue mutex */ - if( pWrite->op!=ASYNC_UNLOCK ){ - async_mutex_leave(ASYNC_MUTEX_QUEUE); - } -} - -/* -** Increment async.nFile in a thread-safe manner. -*/ -static void incrOpenFileCount(void){ - /* We must hold the queue mutex in order to modify async.nFile */ - async_mutex_enter(ASYNC_MUTEX_QUEUE); - if( async.nFile==0 ){ - async.ioError = SQLITE_OK; - } - async.nFile++; - async_mutex_leave(ASYNC_MUTEX_QUEUE); -} - -/* -** This is a utility function to allocate and populate a new AsyncWrite -** structure and insert it (via addAsyncWrite() ) into the global list. -*/ -static int addNewAsyncWrite( - AsyncFileData *pFileData, - int op, - sqlite3_int64 iOffset, - int nByte, - const char *zByte -){ - AsyncWrite *p; - if( op!=ASYNC_CLOSE && async.ioError ){ - return async.ioError; - } - p = sqlite3_malloc(sizeof(AsyncWrite) + (zByte?nByte:0)); - if( !p ){ - /* The upper layer does not expect operations like OsWrite() to - ** return SQLITE_NOMEM. This is partly because under normal conditions - ** SQLite is required to do rollback without calling malloc(). So - ** if malloc() fails here, treat it as an I/O error. The above - ** layer knows how to handle that. - */ - return SQLITE_IOERR; - } - p->op = op; - p->iOffset = iOffset; - p->nByte = nByte; - p->pFileData = pFileData; - p->pNext = 0; - if( zByte ){ - p->zBuf = (char *)&p[1]; - memcpy(p->zBuf, zByte, nByte); - }else{ - p->zBuf = 0; - } - addAsyncWrite(p); - return SQLITE_OK; -} - -/* -** Close the file. This just adds an entry to the write-op list, the file is -** not actually closed. -*/ -static int asyncClose(sqlite3_file *pFile){ - AsyncFileData *p = ((AsyncFile *)pFile)->pData; - - /* Unlock the file, if it is locked */ - async_mutex_enter(ASYNC_MUTEX_LOCK); - p->lock.eLock = 0; - async_mutex_leave(ASYNC_MUTEX_LOCK); - - addAsyncWrite(&p->closeOp); - return SQLITE_OK; -} - -/* -** Implementation of sqlite3OsWrite() for asynchronous files. Instead of -** writing to the underlying file, this function adds an entry to the end of -** the global AsyncWrite list. Either SQLITE_OK or SQLITE_NOMEM may be -** returned. -*/ -static int asyncWrite( - sqlite3_file *pFile, - const void *pBuf, - int amt, - sqlite3_int64 iOff -){ - AsyncFileData *p = ((AsyncFile *)pFile)->pData; - return addNewAsyncWrite(p, ASYNC_WRITE, iOff, amt, pBuf); -} - -/* -** Read data from the file. First we read from the filesystem, then adjust -** the contents of the buffer based on ASYNC_WRITE operations in the -** write-op queue. -** -** This method holds the mutex from start to finish. -*/ -static int asyncRead( - sqlite3_file *pFile, - void *zOut, - int iAmt, - sqlite3_int64 iOffset -){ - AsyncFileData *p = ((AsyncFile *)pFile)->pData; - int rc = SQLITE_OK; - sqlite3_int64 filesize = 0; - sqlite3_file *pBase = p->pBaseRead; - sqlite3_int64 iAmt64 = (sqlite3_int64)iAmt; - - /* Grab the write queue mutex for the duration of the call */ - async_mutex_enter(ASYNC_MUTEX_QUEUE); - - /* If an I/O error has previously occurred in this virtual file - ** system, then all subsequent operations fail. - */ - if( async.ioError!=SQLITE_OK ){ - rc = async.ioError; - goto asyncread_out; - } - - if( pBase->pMethods ){ - sqlite3_int64 nRead; - rc = pBase->pMethods->xFileSize(pBase, &filesize); - if( rc!=SQLITE_OK ){ - goto asyncread_out; - } - nRead = MIN(filesize - iOffset, iAmt64); - if( nRead>0 ){ - rc = pBase->pMethods->xRead(pBase, zOut, (int)nRead, iOffset); - ASYNC_TRACE(("READ %s %d bytes at %d\n", p->zName, nRead, iOffset)); - } - } - - if( rc==SQLITE_OK ){ - AsyncWrite *pWrite; - char *zName = p->zName; - - for(pWrite=async.pQueueFirst; pWrite; pWrite = pWrite->pNext){ - if( pWrite->op==ASYNC_WRITE && ( - (pWrite->pFileData==p) || - (zName && pWrite->pFileData->zName==zName) - )){ - sqlite3_int64 nCopy; - sqlite3_int64 nByte64 = (sqlite3_int64)pWrite->nByte; - - /* Set variable iBeginIn to the offset in buffer pWrite->zBuf[] from - ** which data should be copied. Set iBeginOut to the offset within - ** the output buffer to which data should be copied. If either of - ** these offsets is a negative number, set them to 0. - */ - sqlite3_int64 iBeginOut = (pWrite->iOffset-iOffset); - sqlite3_int64 iBeginIn = -iBeginOut; - if( iBeginIn<0 ) iBeginIn = 0; - if( iBeginOut<0 ) iBeginOut = 0; - - filesize = MAX(filesize, pWrite->iOffset+nByte64); - - nCopy = MIN(nByte64-iBeginIn, iAmt64-iBeginOut); - if( nCopy>0 ){ - memcpy(&((char *)zOut)[iBeginOut], &pWrite->zBuf[iBeginIn], (size_t)nCopy); - ASYNC_TRACE(("OVERREAD %d bytes at %d\n", nCopy, iBeginOut+iOffset)); - } - } - } - } - -asyncread_out: - async_mutex_leave(ASYNC_MUTEX_QUEUE); - if( rc==SQLITE_OK && filesize<(iOffset+iAmt) ){ - rc = SQLITE_IOERR_SHORT_READ; - } - return rc; -} - -/* -** Truncate the file to nByte bytes in length. This just adds an entry to -** the write-op list, no IO actually takes place. -*/ -static int asyncTruncate(sqlite3_file *pFile, sqlite3_int64 nByte){ - AsyncFileData *p = ((AsyncFile *)pFile)->pData; - return addNewAsyncWrite(p, ASYNC_TRUNCATE, nByte, 0, 0); -} - -/* -** Sync the file. This just adds an entry to the write-op list, the -** sync() is done later by sqlite3_async_flush(). -*/ -static int asyncSync(sqlite3_file *pFile, int flags){ - AsyncFileData *p = ((AsyncFile *)pFile)->pData; - return addNewAsyncWrite(p, ASYNC_SYNC, 0, flags, 0); -} - -/* -** Read the size of the file. First we read the size of the file system -** entry, then adjust for any ASYNC_WRITE or ASYNC_TRUNCATE operations -** currently in the write-op list. -** -** This method holds the mutex from start to finish. -*/ -int asyncFileSize(sqlite3_file *pFile, sqlite3_int64 *piSize){ - AsyncFileData *p = ((AsyncFile *)pFile)->pData; - int rc = SQLITE_OK; - sqlite3_int64 s = 0; - sqlite3_file *pBase; - - async_mutex_enter(ASYNC_MUTEX_QUEUE); - - /* Read the filesystem size from the base file. If pMethods is NULL, this - ** means the file hasn't been opened yet. In this case all relevant data - ** must be in the write-op queue anyway, so we can omit reading from the - ** file-system. - */ - pBase = p->pBaseRead; - if( pBase->pMethods ){ - rc = pBase->pMethods->xFileSize(pBase, &s); - } - - if( rc==SQLITE_OK ){ - AsyncWrite *pWrite; - for(pWrite=async.pQueueFirst; pWrite; pWrite = pWrite->pNext){ - if( pWrite->op==ASYNC_DELETE - && p->zName - && strcmp(p->zName, pWrite->zBuf)==0 - ){ - s = 0; - }else if( pWrite->pFileData && ( - (pWrite->pFileData==p) - || (p->zName && pWrite->pFileData->zName==p->zName) - )){ - switch( pWrite->op ){ - case ASYNC_WRITE: - s = MAX(pWrite->iOffset + (sqlite3_int64)(pWrite->nByte), s); - break; - case ASYNC_TRUNCATE: - s = MIN(s, pWrite->iOffset); - break; - } - } - } - *piSize = s; - } - async_mutex_leave(ASYNC_MUTEX_QUEUE); - return rc; -} - -/* -** Lock or unlock the actual file-system entry. -*/ -static int getFileLock(AsyncLock *pLock){ - int rc = SQLITE_OK; - AsyncFileLock *pIter; - int eRequired = 0; - - if( pLock->pFile ){ - for(pIter=pLock->pList; pIter; pIter=pIter->pNext){ - assert(pIter->eAsyncLock>=pIter->eLock); - if( pIter->eAsyncLock>eRequired ){ - eRequired = pIter->eAsyncLock; - assert(eRequired>=0 && eRequired<=SQLITE_LOCK_EXCLUSIVE); - } - } - - if( eRequired>pLock->eLock ){ - rc = pLock->pFile->pMethods->xLock(pLock->pFile, eRequired); - if( rc==SQLITE_OK ){ - pLock->eLock = eRequired; - } - } - else if( eRequiredeLock && eRequired<=SQLITE_LOCK_SHARED ){ - rc = pLock->pFile->pMethods->xUnlock(pLock->pFile, eRequired); - if( rc==SQLITE_OK ){ - pLock->eLock = eRequired; - } - } - } - - return rc; -} - -/* -** Return the AsyncLock structure from the global async.pLock list -** associated with the file-system entry identified by path zName -** (a string of nName bytes). If no such structure exists, return 0. -*/ -static AsyncLock *findLock(const char *zName, int nName){ - AsyncLock *p = async.pLock; - while( p && (p->nFile!=nName || memcmp(p->zFile, zName, nName)) ){ - p = p->pNext; - } - return p; -} - -/* -** The following two methods - asyncLock() and asyncUnlock() - are used -** to obtain and release locks on database files opened with the -** asynchronous backend. -*/ -static int asyncLock(sqlite3_file *pFile, int eLock){ - int rc = SQLITE_OK; - AsyncFileData *p = ((AsyncFile *)pFile)->pData; - - if( p->zName ){ - async_mutex_enter(ASYNC_MUTEX_LOCK); - if( p->lock.eLockpLock; - AsyncFileLock *pIter; - assert(pLock && pLock->pList); - for(pIter=pLock->pList; pIter; pIter=pIter->pNext){ - if( pIter!=&p->lock && ( - (eLock==SQLITE_LOCK_EXCLUSIVE && pIter->eLock>=SQLITE_LOCK_SHARED) || - (eLock==SQLITE_LOCK_PENDING && pIter->eLock>=SQLITE_LOCK_RESERVED) || - (eLock==SQLITE_LOCK_RESERVED && pIter->eLock>=SQLITE_LOCK_RESERVED) || - (eLock==SQLITE_LOCK_SHARED && pIter->eLock>=SQLITE_LOCK_PENDING) - )){ - rc = SQLITE_BUSY; - } - } - if( rc==SQLITE_OK ){ - p->lock.eLock = eLock; - p->lock.eAsyncLock = MAX(p->lock.eAsyncLock, eLock); - } - assert(p->lock.eAsyncLock>=p->lock.eLock); - if( rc==SQLITE_OK ){ - rc = getFileLock(pLock); - } - } - async_mutex_leave(ASYNC_MUTEX_LOCK); - } - - ASYNC_TRACE(("LOCK %d (%s) rc=%d\n", eLock, p->zName, rc)); - return rc; -} -static int asyncUnlock(sqlite3_file *pFile, int eLock){ - int rc = SQLITE_OK; - AsyncFileData *p = ((AsyncFile *)pFile)->pData; - if( p->zName ){ - AsyncFileLock *pLock = &p->lock; - async_mutex_enter(ASYNC_MUTEX_QUEUE); - async_mutex_enter(ASYNC_MUTEX_LOCK); - pLock->eLock = MIN(pLock->eLock, eLock); - rc = addNewAsyncWrite(p, ASYNC_UNLOCK, 0, eLock, 0); - async_mutex_leave(ASYNC_MUTEX_LOCK); - async_mutex_leave(ASYNC_MUTEX_QUEUE); - } - return rc; -} - -/* -** This function is called when the pager layer first opens a database file -** and is checking for a hot-journal. -*/ -static int asyncCheckReservedLock(sqlite3_file *pFile, int *pResOut){ - int ret = 0; - AsyncFileLock *pIter; - AsyncFileData *p = ((AsyncFile *)pFile)->pData; - - async_mutex_enter(ASYNC_MUTEX_LOCK); - for(pIter=p->pLock->pList; pIter; pIter=pIter->pNext){ - if( pIter->eLock>=SQLITE_LOCK_RESERVED ){ - ret = 1; - break; - } - } - async_mutex_leave(ASYNC_MUTEX_LOCK); - - ASYNC_TRACE(("CHECK-LOCK %d (%s)\n", ret, p->zName)); - *pResOut = ret; - return SQLITE_OK; -} - -/* -** sqlite3_file_control() implementation. -*/ -static int asyncFileControl(sqlite3_file *id, int op, void *pArg){ - switch( op ){ - case SQLITE_FCNTL_LOCKSTATE: { - async_mutex_enter(ASYNC_MUTEX_LOCK); - *(int*)pArg = ((AsyncFile*)id)->pData->lock.eLock; - async_mutex_leave(ASYNC_MUTEX_LOCK); - return SQLITE_OK; - } - } - return SQLITE_ERROR; -} - -/* -** Return the device characteristics and sector-size of the device. It -** is tricky to implement these correctly, as this backend might -** not have an open file handle at this point. -*/ -static int asyncSectorSize(sqlite3_file *pFile){ - UNUSED_PARAMETER(pFile); - return 512; -} -static int asyncDeviceCharacteristics(sqlite3_file *pFile){ - UNUSED_PARAMETER(pFile); - return 0; -} - -static int unlinkAsyncFile(AsyncFileData *pData){ - AsyncFileLock **ppIter; - int rc = SQLITE_OK; - - if( pData->zName ){ - AsyncLock *pLock = pData->pLock; - for(ppIter=&pLock->pList; *ppIter; ppIter=&((*ppIter)->pNext)){ - if( (*ppIter)==&pData->lock ){ - *ppIter = pData->lock.pNext; - break; - } - } - if( !pLock->pList ){ - AsyncLock **pp; - if( pLock->pFile ){ - pLock->pFile->pMethods->xClose(pLock->pFile); - } - for(pp=&async.pLock; *pp!=pLock; pp=&((*pp)->pNext)); - *pp = pLock->pNext; - sqlite3_free(pLock); - }else{ - rc = getFileLock(pLock); - } - } - - return rc; -} - -/* -** The parameter passed to this function is a copy of a 'flags' parameter -** passed to this modules xOpen() method. This function returns true -** if the file should be opened asynchronously, or false if it should -** be opened immediately. -** -** If the file is to be opened asynchronously, then asyncOpen() will add -** an entry to the event queue and the file will not actually be opened -** until the event is processed. Otherwise, the file is opened directly -** by the caller. -*/ -static int doAsynchronousOpen(int flags){ - return (flags&SQLITE_OPEN_CREATE) && ( - (flags&SQLITE_OPEN_MAIN_JOURNAL) || - (flags&SQLITE_OPEN_TEMP_JOURNAL) || - (flags&SQLITE_OPEN_DELETEONCLOSE) - ); -} - -/* -** Open a file. -*/ -static int asyncOpen( - sqlite3_vfs *pAsyncVfs, - const char *zName, - sqlite3_file *pFile, - int flags, - int *pOutFlags -){ - static sqlite3_io_methods async_methods = { - 1, /* iVersion */ - asyncClose, /* xClose */ - asyncRead, /* xRead */ - asyncWrite, /* xWrite */ - asyncTruncate, /* xTruncate */ - asyncSync, /* xSync */ - asyncFileSize, /* xFileSize */ - asyncLock, /* xLock */ - asyncUnlock, /* xUnlock */ - asyncCheckReservedLock, /* xCheckReservedLock */ - asyncFileControl, /* xFileControl */ - asyncSectorSize, /* xSectorSize */ - asyncDeviceCharacteristics /* xDeviceCharacteristics */ - }; - - sqlite3_vfs *pVfs = (sqlite3_vfs *)pAsyncVfs->pAppData; - AsyncFile *p = (AsyncFile *)pFile; - int nName = 0; - int rc = SQLITE_OK; - int nByte; - AsyncFileData *pData; - AsyncLock *pLock = 0; - char *z; - int isAsyncOpen = doAsynchronousOpen(flags); - - /* If zName is NULL, then the upper layer is requesting an anonymous file */ - if( zName ){ - nName = (int)strlen(zName)+1; - } - - nByte = ( - sizeof(AsyncFileData) + /* AsyncFileData structure */ - 2 * pVfs->szOsFile + /* AsyncFileData.pBaseRead and pBaseWrite */ - nName /* AsyncFileData.zName */ - ); - z = sqlite3_malloc(nByte); - if( !z ){ - return SQLITE_NOMEM; - } - memset(z, 0, nByte); - pData = (AsyncFileData*)z; - z += sizeof(pData[0]); - pData->pBaseRead = (sqlite3_file*)z; - z += pVfs->szOsFile; - pData->pBaseWrite = (sqlite3_file*)z; - pData->closeOp.pFileData = pData; - pData->closeOp.op = ASYNC_CLOSE; - - if( zName ){ - z += pVfs->szOsFile; - pData->zName = z; - pData->nName = nName; - memcpy(pData->zName, zName, nName); - } - - if( !isAsyncOpen ){ - int flagsout; - rc = pVfs->xOpen(pVfs, pData->zName, pData->pBaseRead, flags, &flagsout); - if( rc==SQLITE_OK - && (flagsout&SQLITE_OPEN_READWRITE) - && (flags&SQLITE_OPEN_EXCLUSIVE)==0 - ){ - rc = pVfs->xOpen(pVfs, pData->zName, pData->pBaseWrite, flags, 0); - } - if( pOutFlags ){ - *pOutFlags = flagsout; - } - } - - async_mutex_enter(ASYNC_MUTEX_LOCK); - - if( zName && rc==SQLITE_OK ){ - pLock = findLock(pData->zName, pData->nName); - if( !pLock ){ - int nByte = pVfs->szOsFile + sizeof(AsyncLock) + pData->nName + 1; - pLock = (AsyncLock *)sqlite3_malloc(nByte); - if( pLock ){ - memset(pLock, 0, nByte); - if( async.bLockFiles && (flags&SQLITE_OPEN_MAIN_DB) ){ - pLock->pFile = (sqlite3_file *)&pLock[1]; - rc = pVfs->xOpen(pVfs, pData->zName, pLock->pFile, flags, 0); - if( rc!=SQLITE_OK ){ - sqlite3_free(pLock); - pLock = 0; - } - } - if( pLock ){ - pLock->nFile = pData->nName; - pLock->zFile = &((char *)(&pLock[1]))[pVfs->szOsFile]; - memcpy(pLock->zFile, pData->zName, pLock->nFile); - pLock->pNext = async.pLock; - async.pLock = pLock; - } - }else{ - rc = SQLITE_NOMEM; - } - } - } - - if( rc==SQLITE_OK ){ - p->pMethod = &async_methods; - p->pData = pData; - - /* Link AsyncFileData.lock into the linked list of - ** AsyncFileLock structures for this file. - */ - if( zName ){ - pData->lock.pNext = pLock->pList; - pLock->pList = &pData->lock; - pData->zName = pLock->zFile; - } - }else{ - if( pData->pBaseRead->pMethods ){ - pData->pBaseRead->pMethods->xClose(pData->pBaseRead); - } - if( pData->pBaseWrite->pMethods ){ - pData->pBaseWrite->pMethods->xClose(pData->pBaseWrite); - } - sqlite3_free(pData); - } - - async_mutex_leave(ASYNC_MUTEX_LOCK); - - if( rc==SQLITE_OK ){ - pData->pLock = pLock; - } - - if( rc==SQLITE_OK && isAsyncOpen ){ - rc = addNewAsyncWrite(pData, ASYNC_OPENEXCLUSIVE, (sqlite3_int64)flags,0,0); - if( rc==SQLITE_OK ){ - if( pOutFlags ) *pOutFlags = flags; - }else{ - async_mutex_enter(ASYNC_MUTEX_LOCK); - unlinkAsyncFile(pData); - async_mutex_leave(ASYNC_MUTEX_LOCK); - sqlite3_free(pData); - } - } - if( rc!=SQLITE_OK ){ - p->pMethod = 0; - }else{ - incrOpenFileCount(); - } - - return rc; -} - -/* -** Implementation of sqlite3OsDelete. Add an entry to the end of the -** write-op queue to perform the delete. -*/ -static int asyncDelete(sqlite3_vfs *pAsyncVfs, const char *z, int syncDir){ - UNUSED_PARAMETER(pAsyncVfs); - return addNewAsyncWrite(0, ASYNC_DELETE, syncDir, (int)strlen(z)+1, z); -} - -/* -** Implementation of sqlite3OsAccess. This method holds the mutex from -** start to finish. -*/ -static int asyncAccess( - sqlite3_vfs *pAsyncVfs, - const char *zName, - int flags, - int *pResOut -){ - int rc; - int ret; - AsyncWrite *p; - sqlite3_vfs *pVfs = (sqlite3_vfs *)pAsyncVfs->pAppData; - - assert(flags==SQLITE_ACCESS_READWRITE - || flags==SQLITE_ACCESS_READ - || flags==SQLITE_ACCESS_EXISTS - ); - - async_mutex_enter(ASYNC_MUTEX_QUEUE); - rc = pVfs->xAccess(pVfs, zName, flags, &ret); - if( rc==SQLITE_OK && flags==SQLITE_ACCESS_EXISTS ){ - for(p=async.pQueueFirst; p; p = p->pNext){ - if( p->op==ASYNC_DELETE && 0==strcmp(p->zBuf, zName) ){ - ret = 0; - }else if( p->op==ASYNC_OPENEXCLUSIVE - && p->pFileData->zName - && 0==strcmp(p->pFileData->zName, zName) - ){ - ret = 1; - } - } - } - ASYNC_TRACE(("ACCESS(%s): %s = %d\n", - flags==SQLITE_ACCESS_READWRITE?"read-write": - flags==SQLITE_ACCESS_READ?"read":"exists" - , zName, ret) - ); - async_mutex_leave(ASYNC_MUTEX_QUEUE); - *pResOut = ret; - return rc; -} - -/* -** Fill in zPathOut with the full path to the file identified by zPath. -*/ -static int asyncFullPathname( - sqlite3_vfs *pAsyncVfs, - const char *zPath, - int nPathOut, - char *zPathOut -){ - int rc; - sqlite3_vfs *pVfs = (sqlite3_vfs *)pAsyncVfs->pAppData; - rc = pVfs->xFullPathname(pVfs, zPath, nPathOut, zPathOut); - - /* Because of the way intra-process file locking works, this backend - ** needs to return a canonical path. The following block assumes the - ** file-system uses unix style paths. - */ - if( rc==SQLITE_OK ){ - int i, j; - char *z = zPathOut; - int n = (int)strlen(z); - while( n>1 && z[n-1]=='/' ){ n--; } - for(i=j=0; i0 && z[j-1]!='/' ){ j--; } - if( j>0 ){ j--; } - i += 2; - continue; - } - } - z[j++] = z[i]; - } - z[j] = 0; - } - - return rc; -} -static void *asyncDlOpen(sqlite3_vfs *pAsyncVfs, const char *zPath){ - sqlite3_vfs *pVfs = (sqlite3_vfs *)pAsyncVfs->pAppData; - return pVfs->xDlOpen(pVfs, zPath); -} -static void asyncDlError(sqlite3_vfs *pAsyncVfs, int nByte, char *zErrMsg){ - sqlite3_vfs *pVfs = (sqlite3_vfs *)pAsyncVfs->pAppData; - pVfs->xDlError(pVfs, nByte, zErrMsg); -} -static void (*asyncDlSym( - sqlite3_vfs *pAsyncVfs, - void *pHandle, - const char *zSymbol -))(void){ - sqlite3_vfs *pVfs = (sqlite3_vfs *)pAsyncVfs->pAppData; - return pVfs->xDlSym(pVfs, pHandle, zSymbol); -} -static void asyncDlClose(sqlite3_vfs *pAsyncVfs, void *pHandle){ - sqlite3_vfs *pVfs = (sqlite3_vfs *)pAsyncVfs->pAppData; - pVfs->xDlClose(pVfs, pHandle); -} -static int asyncRandomness(sqlite3_vfs *pAsyncVfs, int nByte, char *zBufOut){ - sqlite3_vfs *pVfs = (sqlite3_vfs *)pAsyncVfs->pAppData; - return pVfs->xRandomness(pVfs, nByte, zBufOut); -} -static int asyncSleep(sqlite3_vfs *pAsyncVfs, int nMicro){ - sqlite3_vfs *pVfs = (sqlite3_vfs *)pAsyncVfs->pAppData; - return pVfs->xSleep(pVfs, nMicro); -} -static int asyncCurrentTime(sqlite3_vfs *pAsyncVfs, double *pTimeOut){ - sqlite3_vfs *pVfs = (sqlite3_vfs *)pAsyncVfs->pAppData; - return pVfs->xCurrentTime(pVfs, pTimeOut); -} - -static sqlite3_vfs async_vfs = { - 1, /* iVersion */ - sizeof(AsyncFile), /* szOsFile */ - 0, /* mxPathname */ - 0, /* pNext */ - SQLITEASYNC_VFSNAME, /* zName */ - 0, /* pAppData */ - asyncOpen, /* xOpen */ - asyncDelete, /* xDelete */ - asyncAccess, /* xAccess */ - asyncFullPathname, /* xFullPathname */ - asyncDlOpen, /* xDlOpen */ - asyncDlError, /* xDlError */ - asyncDlSym, /* xDlSym */ - asyncDlClose, /* xDlClose */ - asyncRandomness, /* xDlError */ - asyncSleep, /* xDlSym */ - asyncCurrentTime /* xDlClose */ -}; - -/* -** This procedure runs in a separate thread, reading messages off of the -** write queue and processing them one by one. -** -** If async.writerHaltNow is true, then this procedure exits -** after processing a single message. -** -** If async.writerHaltWhenIdle is true, then this procedure exits when -** the write queue is empty. -** -** If both of the above variables are false, this procedure runs -** indefinately, waiting for operations to be added to the write queue -** and processing them in the order in which they arrive. -** -** An artifical delay of async.ioDelay milliseconds is inserted before -** each write operation in order to simulate the effect of a slow disk. -** -** Only one instance of this procedure may be running at a time. -*/ -static void asyncWriterThread(void){ - sqlite3_vfs *pVfs = (sqlite3_vfs *)(async_vfs.pAppData); - AsyncWrite *p = 0; - int rc = SQLITE_OK; - int holdingMutex = 0; - - async_mutex_enter(ASYNC_MUTEX_WRITER); - - while( async.eHalt!=SQLITEASYNC_HALT_NOW ){ - int doNotFree = 0; - sqlite3_file *pBase = 0; - - if( !holdingMutex ){ - async_mutex_enter(ASYNC_MUTEX_QUEUE); - } - while( (p = async.pQueueFirst)==0 ){ - if( async.eHalt!=SQLITEASYNC_HALT_NEVER ){ - async_mutex_leave(ASYNC_MUTEX_QUEUE); - break; - }else{ - ASYNC_TRACE(("IDLE\n")); - async_cond_wait(ASYNC_COND_QUEUE, ASYNC_MUTEX_QUEUE); - ASYNC_TRACE(("WAKEUP\n")); - } - } - if( p==0 ) break; - holdingMutex = 1; - - /* Right now this thread is holding the mutex on the write-op queue. - ** Variable 'p' points to the first entry in the write-op queue. In - ** the general case, we hold on to the mutex for the entire body of - ** the loop. - ** - ** However in the cases enumerated below, we relinquish the mutex, - ** perform the IO, and then re-request the mutex before removing 'p' from - ** the head of the write-op queue. The idea is to increase concurrency with - ** sqlite threads. - ** - ** * An ASYNC_CLOSE operation. - ** * An ASYNC_OPENEXCLUSIVE operation. For this one, we relinquish - ** the mutex, call the underlying xOpenExclusive() function, then - ** re-aquire the mutex before seting the AsyncFile.pBaseRead - ** variable. - ** * ASYNC_SYNC and ASYNC_WRITE operations, if - ** SQLITE_ASYNC_TWO_FILEHANDLES was set at compile time and two - ** file-handles are open for the particular file being "synced". - */ - if( async.ioError!=SQLITE_OK && p->op!=ASYNC_CLOSE ){ - p->op = ASYNC_NOOP; - } - if( p->pFileData ){ - pBase = p->pFileData->pBaseWrite; - if( - p->op==ASYNC_CLOSE || - p->op==ASYNC_OPENEXCLUSIVE || - (pBase->pMethods && (p->op==ASYNC_SYNC || p->op==ASYNC_WRITE) ) - ){ - async_mutex_leave(ASYNC_MUTEX_QUEUE); - holdingMutex = 0; - } - if( !pBase->pMethods ){ - pBase = p->pFileData->pBaseRead; - } - } - - switch( p->op ){ - case ASYNC_NOOP: - break; - - case ASYNC_WRITE: - assert( pBase ); - ASYNC_TRACE(("WRITE %s %d bytes at %d\n", - p->pFileData->zName, p->nByte, p->iOffset)); - rc = pBase->pMethods->xWrite(pBase, (void *)(p->zBuf), p->nByte, p->iOffset); - break; - - case ASYNC_SYNC: - assert( pBase ); - ASYNC_TRACE(("SYNC %s\n", p->pFileData->zName)); - rc = pBase->pMethods->xSync(pBase, p->nByte); - break; - - case ASYNC_TRUNCATE: - assert( pBase ); - ASYNC_TRACE(("TRUNCATE %s to %d bytes\n", - p->pFileData->zName, p->iOffset)); - rc = pBase->pMethods->xTruncate(pBase, p->iOffset); - break; - - case ASYNC_CLOSE: { - AsyncFileData *pData = p->pFileData; - ASYNC_TRACE(("CLOSE %s\n", p->pFileData->zName)); - if( pData->pBaseWrite->pMethods ){ - pData->pBaseWrite->pMethods->xClose(pData->pBaseWrite); - } - if( pData->pBaseRead->pMethods ){ - pData->pBaseRead->pMethods->xClose(pData->pBaseRead); - } - - /* Unlink AsyncFileData.lock from the linked list of AsyncFileLock - ** structures for this file. Obtain the async.lockMutex mutex - ** before doing so. - */ - async_mutex_enter(ASYNC_MUTEX_LOCK); - rc = unlinkAsyncFile(pData); - async_mutex_leave(ASYNC_MUTEX_LOCK); - - if( !holdingMutex ){ - async_mutex_enter(ASYNC_MUTEX_QUEUE); - holdingMutex = 1; - } - assert_mutex_is_held(ASYNC_MUTEX_QUEUE); - async.pQueueFirst = p->pNext; - sqlite3_free(pData); - doNotFree = 1; - break; - } - - case ASYNC_UNLOCK: { - AsyncWrite *pIter; - AsyncFileData *pData = p->pFileData; - int eLock = p->nByte; - - /* When a file is locked by SQLite using the async backend, it is - ** locked within the 'real' file-system synchronously. When it is - ** unlocked, an ASYNC_UNLOCK event is added to the write-queue to - ** unlock the file asynchronously. The design of the async backend - ** requires that the 'real' file-system file be locked from the - ** time that SQLite first locks it (and probably reads from it) - ** until all asynchronous write events that were scheduled before - ** SQLite unlocked the file have been processed. - ** - ** This is more complex if SQLite locks and unlocks the file multiple - ** times in quick succession. For example, if SQLite does: - ** - ** lock, write, unlock, lock, write, unlock - ** - ** Each "lock" operation locks the file immediately. Each "write" - ** and "unlock" operation adds an event to the event queue. If the - ** second "lock" operation is performed before the first "unlock" - ** operation has been processed asynchronously, then the first - ** "unlock" cannot be safely processed as is, since this would mean - ** the file was unlocked when the second "write" operation is - ** processed. To work around this, when processing an ASYNC_UNLOCK - ** operation, SQLite: - ** - ** 1) Unlocks the file to the minimum of the argument passed to - ** the xUnlock() call and the current lock from SQLite's point - ** of view, and - ** - ** 2) Only unlocks the file at all if this event is the last - ** ASYNC_UNLOCK event on this file in the write-queue. - */ - assert( holdingMutex==1 ); - assert( async.pQueueFirst==p ); - for(pIter=async.pQueueFirst->pNext; pIter; pIter=pIter->pNext){ - if( pIter->pFileData==pData && pIter->op==ASYNC_UNLOCK ) break; - } - if( !pIter ){ - async_mutex_enter(ASYNC_MUTEX_LOCK); - pData->lock.eAsyncLock = MIN( - pData->lock.eAsyncLock, MAX(pData->lock.eLock, eLock) - ); - assert(pData->lock.eAsyncLock>=pData->lock.eLock); - rc = getFileLock(pData->pLock); - async_mutex_leave(ASYNC_MUTEX_LOCK); - } - break; - } - - case ASYNC_DELETE: - ASYNC_TRACE(("DELETE %s\n", p->zBuf)); - rc = pVfs->xDelete(pVfs, p->zBuf, (int)p->iOffset); - break; - - case ASYNC_OPENEXCLUSIVE: { - int flags = (int)p->iOffset; - AsyncFileData *pData = p->pFileData; - ASYNC_TRACE(("OPEN %s flags=%d\n", p->zBuf, (int)p->iOffset)); - assert(pData->pBaseRead->pMethods==0 && pData->pBaseWrite->pMethods==0); - rc = pVfs->xOpen(pVfs, pData->zName, pData->pBaseRead, flags, 0); - assert( holdingMutex==0 ); - async_mutex_enter(ASYNC_MUTEX_QUEUE); - holdingMutex = 1; - break; - } - - default: assert(!"Illegal value for AsyncWrite.op"); - } - - /* If we didn't hang on to the mutex during the IO op, obtain it now - ** so that the AsyncWrite structure can be safely removed from the - ** global write-op queue. - */ - if( !holdingMutex ){ - async_mutex_enter(ASYNC_MUTEX_QUEUE); - holdingMutex = 1; - } - /* ASYNC_TRACE(("UNLINK %p\n", p)); */ - if( p==async.pQueueLast ){ - async.pQueueLast = 0; - } - if( !doNotFree ){ - assert_mutex_is_held(ASYNC_MUTEX_QUEUE); - async.pQueueFirst = p->pNext; - sqlite3_free(p); - } - assert( holdingMutex ); - - /* An IO error has occurred. We cannot report the error back to the - ** connection that requested the I/O since the error happened - ** asynchronously. The connection has already moved on. There - ** really is nobody to report the error to. - ** - ** The file for which the error occurred may have been a database or - ** journal file. Regardless, none of the currently queued operations - ** associated with the same database should now be performed. Nor should - ** any subsequently requested IO on either a database or journal file - ** handle for the same database be accepted until the main database - ** file handle has been closed and reopened. - ** - ** Furthermore, no further IO should be queued or performed on any file - ** handle associated with a database that may have been part of a - ** multi-file transaction that included the database associated with - ** the IO error (i.e. a database ATTACHed to the same handle at some - ** point in time). - */ - if( rc!=SQLITE_OK ){ - async.ioError = rc; - } - - if( async.ioError && !async.pQueueFirst ){ - async_mutex_enter(ASYNC_MUTEX_LOCK); - if( 0==async.pLock ){ - async.ioError = SQLITE_OK; - } - async_mutex_leave(ASYNC_MUTEX_LOCK); - } - - /* Drop the queue mutex before continuing to the next write operation - ** in order to give other threads a chance to work with the write queue. - */ - if( !async.pQueueFirst || !async.ioError ){ - async_mutex_leave(ASYNC_MUTEX_QUEUE); - holdingMutex = 0; - if( async.ioDelay>0 ){ - pVfs->xSleep(pVfs, async.ioDelay*1000); - }else{ - async_sched_yield(); - } - } - } - - async_mutex_leave(ASYNC_MUTEX_WRITER); - return; -} - -/* -** Install the asynchronous VFS. -*/ -int sqlite3async_initialize(const char *zParent, int isDefault){ - int rc = SQLITE_OK; - if( async_vfs.pAppData==0 ){ - sqlite3_vfs *pParent = sqlite3_vfs_find(zParent); - if( !pParent || async_os_initialize() ){ - rc = SQLITE_ERROR; - }else if( SQLITE_OK!=(rc = sqlite3_vfs_register(&async_vfs, isDefault)) ){ - async_os_shutdown(); - }else{ - async_vfs.pAppData = (void *)pParent; - async_vfs.mxPathname = ((sqlite3_vfs *)async_vfs.pAppData)->mxPathname; - } - } - return rc; -} - -/* -** Uninstall the asynchronous VFS. -*/ -void sqlite3async_shutdown(void){ - if( async_vfs.pAppData ){ - async_os_shutdown(); - sqlite3_vfs_unregister((sqlite3_vfs *)&async_vfs); - async_vfs.pAppData = 0; - } -} - -/* -** Process events on the write-queue. -*/ -void sqlite3async_run(void){ - asyncWriterThread(); -} - -/* -** Control/configure the asynchronous IO system. -*/ -int sqlite3async_control(int op, ...){ - va_list ap; - va_start(ap, op); - switch( op ){ - case SQLITEASYNC_HALT: { - int eWhen = va_arg(ap, int); - if( eWhen!=SQLITEASYNC_HALT_NEVER - && eWhen!=SQLITEASYNC_HALT_NOW - && eWhen!=SQLITEASYNC_HALT_IDLE - ){ - return SQLITE_MISUSE; - } - async.eHalt = eWhen; - async_mutex_enter(ASYNC_MUTEX_QUEUE); - async_cond_signal(ASYNC_COND_QUEUE); - async_mutex_leave(ASYNC_MUTEX_QUEUE); - break; - } - - case SQLITEASYNC_DELAY: { - int iDelay = va_arg(ap, int); - if( iDelay<0 ){ - return SQLITE_MISUSE; - } - async.ioDelay = iDelay; - break; - } - - case SQLITEASYNC_LOCKFILES: { - int bLock = va_arg(ap, int); - async_mutex_enter(ASYNC_MUTEX_QUEUE); - if( async.nFile || async.pQueueFirst ){ - async_mutex_leave(ASYNC_MUTEX_QUEUE); - return SQLITE_MISUSE; - } - async.bLockFiles = bLock; - async_mutex_leave(ASYNC_MUTEX_QUEUE); - break; - } - - case SQLITEASYNC_GET_HALT: { - int *peWhen = va_arg(ap, int *); - *peWhen = async.eHalt; - break; - } - case SQLITEASYNC_GET_DELAY: { - int *piDelay = va_arg(ap, int *); - *piDelay = async.ioDelay; - break; - } - case SQLITEASYNC_GET_LOCKFILES: { - int *piDelay = va_arg(ap, int *); - *piDelay = async.bLockFiles; - break; - } - - default: - return SQLITE_ERROR; - } - return SQLITE_OK; -} - -#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_ASYNCIO) */ - diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/async/sqlite3async.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/async/sqlite3async.h deleted file mode 100644 index 1692d5cd70..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/async/sqlite3async.h +++ /dev/null @@ -1,223 +0,0 @@ - -#ifndef __SQLITEASYNC_H_ -#define __SQLITEASYNC_H_ 1 - -/* -** Make sure we can call this stuff from C++. -*/ -#ifdef __cplusplus -extern "C" { -#endif - -#define SQLITEASYNC_VFSNAME "sqlite3async" - -/* -** THREAD SAFETY NOTES: -** -** Of the four API functions in this file, the following are not threadsafe: -** -** sqlite3async_initialize() -** sqlite3async_shutdown() -** -** Care must be taken that neither of these functions is called while -** another thread may be calling either any sqlite3async_XXX() function -** or an sqlite3_XXX() API function related to a database handle that -** is using the asynchronous IO VFS. -** -** These functions: -** -** sqlite3async_run() -** sqlite3async_control() -** -** are threadsafe. It is quite safe to call either of these functions even -** if another thread may also be calling one of them or an sqlite3_XXX() -** function related to a database handle that uses the asynchronous IO VFS. -*/ - -/* -** Initialize the asynchronous IO VFS and register it with SQLite using -** sqlite3_vfs_register(). If the asynchronous VFS is already initialized -** and registered, this function is a no-op. The asynchronous IO VFS -** is registered as "sqlite3async". -** -** The asynchronous IO VFS does not make operating system IO requests -** directly. Instead, it uses an existing VFS implementation for all -** required file-system operations. If the first parameter to this function -** is NULL, then the current default VFS is used for IO. If it is not -** NULL, then it must be the name of an existing VFS. In other words, the -** first argument to this function is passed to sqlite3_vfs_find() to -** locate the VFS to use for all real IO operations. This VFS is known -** as the "parent VFS". -** -** If the second parameter to this function is non-zero, then the -** asynchronous IO VFS is registered as the default VFS for all SQLite -** database connections within the process. Otherwise, the asynchronous IO -** VFS is only used by connections opened using sqlite3_open_v2() that -** specifically request VFS "sqlite3async". -** -** If a parent VFS cannot be located, then SQLITE_ERROR is returned. -** In the unlikely event that operating system specific initialization -** fails (win32 systems create the required critical section and event -** objects within this function), then SQLITE_ERROR is also returned. -** Finally, if the call to sqlite3_vfs_register() returns an error, then -** the error code is returned to the user by this function. In all three -** of these cases, intialization has failed and the asynchronous IO VFS -** is not registered with SQLite. -** -** Otherwise, if no error occurs, SQLITE_OK is returned. -*/ -int sqlite3async_initialize(const char *zParent, int isDefault); - -/* -** This function unregisters the asynchronous IO VFS using -** sqlite3_vfs_unregister(). -** -** On win32 platforms, this function also releases the small number of -** critical section and event objects created by sqlite3async_initialize(). -*/ -void sqlite3async_shutdown(); - -/* -** This function may only be called when the asynchronous IO VFS is -** installed (after a call to sqlite3async_initialize()). It processes -** zero or more queued write operations before returning. It is expected -** (but not required) that this function will be called by a different -** thread than those threads that use SQLite. The "background thread" -** that performs IO. -** -** How many queued write operations are performed before returning -** depends on the global setting configured by passing the SQLITEASYNC_HALT -** verb to sqlite3async_control() (see below for details). By default -** this function never returns - it processes all pending operations and -** then blocks waiting for new ones. -** -** If multiple simultaneous calls are made to sqlite3async_run() from two -** or more threads, then the calls are serialized internally. -*/ -void sqlite3async_run(); - -/* -** This function may only be called when the asynchronous IO VFS is -** installed (after a call to sqlite3async_initialize()). It is used -** to query or configure various parameters that affect the operation -** of the asynchronous IO VFS. At present there are three parameters -** supported: -** -** * The "halt" parameter, which configures the circumstances under -** which the sqlite3async_run() parameter is configured. -** -** * The "delay" parameter. Setting the delay parameter to a non-zero -** value causes the sqlite3async_run() function to sleep for the -** configured number of milliseconds between each queued write -** operation. -** -** * The "lockfiles" parameter. This parameter determines whether or -** not the asynchronous IO VFS locks the database files it operates -** on. Disabling file locking can improve throughput. -** -** This function is always passed two arguments. When setting the value -** of a parameter, the first argument must be one of SQLITEASYNC_HALT, -** SQLITEASYNC_DELAY or SQLITEASYNC_LOCKFILES. The second argument must -** be passed the new value for the parameter as type "int". -** -** When querying the current value of a paramter, the first argument must -** be one of SQLITEASYNC_GET_HALT, GET_DELAY or GET_LOCKFILES. The second -** argument to this function must be of type (int *). The current value -** of the queried parameter is copied to the memory pointed to by the -** second argument. For example: -** -** int eCurrentHalt; -** int eNewHalt = SQLITEASYNC_HALT_IDLE; -** -** sqlite3async_control(SQLITEASYNC_HALT, eNewHalt); -** sqlite3async_control(SQLITEASYNC_GET_HALT, &eCurrentHalt); -** assert( eNewHalt==eCurrentHalt ); -** -** See below for more detail on each configuration parameter. -** -** SQLITEASYNC_HALT: -** -** This is used to set the value of the "halt" parameter. The second -** argument must be one of the SQLITEASYNC_HALT_XXX symbols defined -** below (either NEVER, IDLE and NOW). -** -** If the parameter is set to NEVER, then calls to sqlite3async_run() -** never return. This is the default setting. If the parameter is set -** to IDLE, then calls to sqlite3async_run() return as soon as the -** queue of pending write operations is empty. If the parameter is set -** to NOW, then calls to sqlite3async_run() return as quickly as -** possible, without processing any pending write requests. -** -** If an attempt is made to set this parameter to an integer value other -** than SQLITEASYNC_HALT_NEVER, IDLE or NOW, then sqlite3async_control() -** returns SQLITE_MISUSE and the current value of the parameter is not -** modified. -** -** Modifying the "halt" parameter affects calls to sqlite3async_run() -** made by other threads that are currently in progress. -** -** SQLITEASYNC_DELAY: -** -** This is used to set the value of the "delay" parameter. If set to -** a non-zero value, then after completing a pending write request, the -** sqlite3async_run() function sleeps for the configured number of -** milliseconds. -** -** If an attempt is made to set this parameter to a negative value, -** sqlite3async_control() returns SQLITE_MISUSE and the current value -** of the parameter is not modified. -** -** Modifying the "delay" parameter affects calls to sqlite3async_run() -** made by other threads that are currently in progress. -** -** SQLITEASYNC_LOCKFILES: -** -** This is used to set the value of the "lockfiles" parameter. This -** parameter must be set to either 0 or 1. If set to 1, then the -** asynchronous IO VFS uses the xLock() and xUnlock() methods of the -** parent VFS to lock database files being read and/or written. If -** the parameter is set to 0, then these locks are omitted. -** -** This parameter may only be set when there are no open database -** connections using the VFS and the queue of pending write requests -** is empty. Attempting to set it when this is not true, or to set it -** to a value other than 0 or 1 causes sqlite3async_control() to return -** SQLITE_MISUSE and the value of the parameter to remain unchanged. -** -** If this parameter is set to zero, then it is only safe to access the -** database via the asynchronous IO VFS from within a single process. If -** while writing to the database via the asynchronous IO VFS the database -** is also read or written from within another process, or via another -** connection that does not use the asynchronous IO VFS within the same -** process, the results are undefined (and may include crashes or database -** corruption). -** -** Alternatively, if this parameter is set to 1, then it is safe to access -** the database from multiple connections within multiple processes using -** either the asynchronous IO VFS or the parent VFS directly. -*/ -int sqlite3async_control(int op, ...); - -/* -** Values that can be used as the first argument to sqlite3async_control(). -*/ -#define SQLITEASYNC_HALT 1 -#define SQLITEASYNC_GET_HALT 2 -#define SQLITEASYNC_DELAY 3 -#define SQLITEASYNC_GET_DELAY 4 -#define SQLITEASYNC_LOCKFILES 5 -#define SQLITEASYNC_GET_LOCKFILES 6 - -/* -** If the first argument to sqlite3async_control() is SQLITEASYNC_HALT, -** the second argument should be one of the following. -*/ -#define SQLITEASYNC_HALT_NEVER 0 /* Never halt (default value) */ -#define SQLITEASYNC_HALT_NOW 1 /* Halt as soon as possible */ -#define SQLITEASYNC_HALT_IDLE 2 /* Halt when write-queue is empty */ - -#ifdef __cplusplus -} /* End of the 'extern "C"' block */ -#endif -#endif /* ifndef __SQLITEASYNC_H_ */ - diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/README.txt b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/README.txt deleted file mode 100644 index 47478b41a9..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/README.txt +++ /dev/null @@ -1,2 +0,0 @@ -This folder contains source code to the first full-text search -extension for SQLite. diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/ft_hash.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/ft_hash.c deleted file mode 100644 index cfcbfc8493..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/ft_hash.c +++ /dev/null @@ -1,404 +0,0 @@ -/* -** 2001 September 22 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This is the implementation of generic hash-tables used in SQLite. -** We've modified it slightly to serve as a standalone hash table -** implementation for the full-text indexing module. -*/ -#include -#include -#include - -#include "ft_hash.h" - -void *malloc_and_zero(int n){ - void *p = malloc(n); - if( p ){ - memset(p, 0, n); - } - return p; -} - -/* Turn bulk memory into a hash table object by initializing the -** fields of the Hash structure. -** -** "pNew" is a pointer to the hash table that is to be initialized. -** keyClass is one of the constants HASH_INT, HASH_POINTER, -** HASH_BINARY, or HASH_STRING. The value of keyClass -** determines what kind of key the hash table will use. "copyKey" is -** true if the hash table should make its own private copy of keys and -** false if it should just use the supplied pointer. CopyKey only makes -** sense for HASH_STRING and HASH_BINARY and is ignored -** for other key classes. -*/ -void HashInit(Hash *pNew, int keyClass, int copyKey){ - assert( pNew!=0 ); - assert( keyClass>=HASH_STRING && keyClass<=HASH_BINARY ); - pNew->keyClass = keyClass; -#if 0 - if( keyClass==HASH_POINTER || keyClass==HASH_INT ) copyKey = 0; -#endif - pNew->copyKey = copyKey; - pNew->first = 0; - pNew->count = 0; - pNew->htsize = 0; - pNew->ht = 0; - pNew->xMalloc = malloc_and_zero; - pNew->xFree = free; -} - -/* Remove all entries from a hash table. Reclaim all memory. -** Call this routine to delete a hash table or to reset a hash table -** to the empty state. -*/ -void HashClear(Hash *pH){ - HashElem *elem; /* For looping over all elements of the table */ - - assert( pH!=0 ); - elem = pH->first; - pH->first = 0; - if( pH->ht ) pH->xFree(pH->ht); - pH->ht = 0; - pH->htsize = 0; - while( elem ){ - HashElem *next_elem = elem->next; - if( pH->copyKey && elem->pKey ){ - pH->xFree(elem->pKey); - } - pH->xFree(elem); - elem = next_elem; - } - pH->count = 0; -} - -#if 0 /* NOT USED */ -/* -** Hash and comparison functions when the mode is HASH_INT -*/ -static int intHash(const void *pKey, int nKey){ - return nKey ^ (nKey<<8) ^ (nKey>>8); -} -static int intCompare(const void *pKey1, int n1, const void *pKey2, int n2){ - return n2 - n1; -} -#endif - -#if 0 /* NOT USED */ -/* -** Hash and comparison functions when the mode is HASH_POINTER -*/ -static int ptrHash(const void *pKey, int nKey){ - uptr x = Addr(pKey); - return x ^ (x<<8) ^ (x>>8); -} -static int ptrCompare(const void *pKey1, int n1, const void *pKey2, int n2){ - if( pKey1==pKey2 ) return 0; - if( pKey1 0 ){ - h = (h<<3) ^ h ^ *z++; - nKey--; - } - return h & 0x7fffffff; -} -static int strCompare(const void *pKey1, int n1, const void *pKey2, int n2){ - if( n1!=n2 ) return 1; - return strncmp((const char*)pKey1,(const char*)pKey2,n1); -} - -/* -** Hash and comparison functions when the mode is HASH_BINARY -*/ -static int binHash(const void *pKey, int nKey){ - int h = 0; - const char *z = (const char *)pKey; - while( nKey-- > 0 ){ - h = (h<<3) ^ h ^ *(z++); - } - return h & 0x7fffffff; -} -static int binCompare(const void *pKey1, int n1, const void *pKey2, int n2){ - if( n1!=n2 ) return 1; - return memcmp(pKey1,pKey2,n1); -} - -/* -** Return a pointer to the appropriate hash function given the key class. -** -** The C syntax in this function definition may be unfamilar to some -** programmers, so we provide the following additional explanation: -** -** The name of the function is "hashFunction". The function takes a -** single parameter "keyClass". The return value of hashFunction() -** is a pointer to another function. Specifically, the return value -** of hashFunction() is a pointer to a function that takes two parameters -** with types "const void*" and "int" and returns an "int". -*/ -static int (*hashFunction(int keyClass))(const void*,int){ -#if 0 /* HASH_INT and HASH_POINTER are never used */ - switch( keyClass ){ - case HASH_INT: return &intHash; - case HASH_POINTER: return &ptrHash; - case HASH_STRING: return &strHash; - case HASH_BINARY: return &binHash;; - default: break; - } - return 0; -#else - if( keyClass==HASH_STRING ){ - return &strHash; - }else{ - assert( keyClass==HASH_BINARY ); - return &binHash; - } -#endif -} - -/* -** Return a pointer to the appropriate hash function given the key class. -** -** For help in interpreted the obscure C code in the function definition, -** see the header comment on the previous function. -*/ -static int (*compareFunction(int keyClass))(const void*,int,const void*,int){ -#if 0 /* HASH_INT and HASH_POINTER are never used */ - switch( keyClass ){ - case HASH_INT: return &intCompare; - case HASH_POINTER: return &ptrCompare; - case HASH_STRING: return &strCompare; - case HASH_BINARY: return &binCompare; - default: break; - } - return 0; -#else - if( keyClass==HASH_STRING ){ - return &strCompare; - }else{ - assert( keyClass==HASH_BINARY ); - return &binCompare; - } -#endif -} - -/* Link an element into the hash table -*/ -static void insertElement( - Hash *pH, /* The complete hash table */ - struct _ht *pEntry, /* The entry into which pNew is inserted */ - HashElem *pNew /* The element to be inserted */ -){ - HashElem *pHead; /* First element already in pEntry */ - pHead = pEntry->chain; - if( pHead ){ - pNew->next = pHead; - pNew->prev = pHead->prev; - if( pHead->prev ){ pHead->prev->next = pNew; } - else { pH->first = pNew; } - pHead->prev = pNew; - }else{ - pNew->next = pH->first; - if( pH->first ){ pH->first->prev = pNew; } - pNew->prev = 0; - pH->first = pNew; - } - pEntry->count++; - pEntry->chain = pNew; -} - - -/* Resize the hash table so that it cantains "new_size" buckets. -** "new_size" must be a power of 2. The hash table might fail -** to resize if sqliteMalloc() fails. -*/ -static void rehash(Hash *pH, int new_size){ - struct _ht *new_ht; /* The new hash table */ - HashElem *elem, *next_elem; /* For looping over existing elements */ - int (*xHash)(const void*,int); /* The hash function */ - - assert( (new_size & (new_size-1))==0 ); - new_ht = (struct _ht *)pH->xMalloc( new_size*sizeof(struct _ht) ); - if( new_ht==0 ) return; - if( pH->ht ) pH->xFree(pH->ht); - pH->ht = new_ht; - pH->htsize = new_size; - xHash = hashFunction(pH->keyClass); - for(elem=pH->first, pH->first=0; elem; elem = next_elem){ - int h = (*xHash)(elem->pKey, elem->nKey) & (new_size-1); - next_elem = elem->next; - insertElement(pH, &new_ht[h], elem); - } -} - -/* This function (for internal use only) locates an element in an -** hash table that matches the given key. The hash for this key has -** already been computed and is passed as the 4th parameter. -*/ -static HashElem *findElementGivenHash( - const Hash *pH, /* The pH to be searched */ - const void *pKey, /* The key we are searching for */ - int nKey, - int h /* The hash for this key. */ -){ - HashElem *elem; /* Used to loop thru the element list */ - int count; /* Number of elements left to test */ - int (*xCompare)(const void*,int,const void*,int); /* comparison function */ - - if( pH->ht ){ - struct _ht *pEntry = &pH->ht[h]; - elem = pEntry->chain; - count = pEntry->count; - xCompare = compareFunction(pH->keyClass); - while( count-- && elem ){ - if( (*xCompare)(elem->pKey,elem->nKey,pKey,nKey)==0 ){ - return elem; - } - elem = elem->next; - } - } - return 0; -} - -/* Remove a single entry from the hash table given a pointer to that -** element and a hash on the element's key. -*/ -static void removeElementGivenHash( - Hash *pH, /* The pH containing "elem" */ - HashElem* elem, /* The element to be removed from the pH */ - int h /* Hash value for the element */ -){ - struct _ht *pEntry; - if( elem->prev ){ - elem->prev->next = elem->next; - }else{ - pH->first = elem->next; - } - if( elem->next ){ - elem->next->prev = elem->prev; - } - pEntry = &pH->ht[h]; - if( pEntry->chain==elem ){ - pEntry->chain = elem->next; - } - pEntry->count--; - if( pEntry->count<=0 ){ - pEntry->chain = 0; - } - if( pH->copyKey && elem->pKey ){ - pH->xFree(elem->pKey); - } - pH->xFree( elem ); - pH->count--; - if( pH->count<=0 ){ - assert( pH->first==0 ); - assert( pH->count==0 ); - HashClear(pH); - } -} - -/* Attempt to locate an element of the hash table pH with a key -** that matches pKey,nKey. Return the data for this element if it is -** found, or NULL if there is no match. -*/ -void *HashFind(const Hash *pH, const void *pKey, int nKey){ - int h; /* A hash on key */ - HashElem *elem; /* The element that matches key */ - int (*xHash)(const void*,int); /* The hash function */ - - if( pH==0 || pH->ht==0 ) return 0; - xHash = hashFunction(pH->keyClass); - assert( xHash!=0 ); - h = (*xHash)(pKey,nKey); - assert( (pH->htsize & (pH->htsize-1))==0 ); - elem = findElementGivenHash(pH,pKey,nKey, h & (pH->htsize-1)); - return elem ? elem->data : 0; -} - -/* Insert an element into the hash table pH. The key is pKey,nKey -** and the data is "data". -** -** If no element exists with a matching key, then a new -** element is created. A copy of the key is made if the copyKey -** flag is set. NULL is returned. -** -** If another element already exists with the same key, then the -** new data replaces the old data and the old data is returned. -** The key is not copied in this instance. If a malloc fails, then -** the new data is returned and the hash table is unchanged. -** -** If the "data" parameter to this function is NULL, then the -** element corresponding to "key" is removed from the hash table. -*/ -void *HashInsert(Hash *pH, const void *pKey, int nKey, void *data){ - int hraw; /* Raw hash value of the key */ - int h; /* the hash of the key modulo hash table size */ - HashElem *elem; /* Used to loop thru the element list */ - HashElem *new_elem; /* New element added to the pH */ - int (*xHash)(const void*,int); /* The hash function */ - - assert( pH!=0 ); - xHash = hashFunction(pH->keyClass); - assert( xHash!=0 ); - hraw = (*xHash)(pKey, nKey); - assert( (pH->htsize & (pH->htsize-1))==0 ); - h = hraw & (pH->htsize-1); - elem = findElementGivenHash(pH,pKey,nKey,h); - if( elem ){ - void *old_data = elem->data; - if( data==0 ){ - removeElementGivenHash(pH,elem,h); - }else{ - elem->data = data; - } - return old_data; - } - if( data==0 ) return 0; - new_elem = (HashElem*)pH->xMalloc( sizeof(HashElem) ); - if( new_elem==0 ) return data; - if( pH->copyKey && pKey!=0 ){ - new_elem->pKey = pH->xMalloc( nKey ); - if( new_elem->pKey==0 ){ - pH->xFree(new_elem); - return data; - } - memcpy((void*)new_elem->pKey, pKey, nKey); - }else{ - new_elem->pKey = (void*)pKey; - } - new_elem->nKey = nKey; - pH->count++; - if( pH->htsize==0 ){ - rehash(pH,8); - if( pH->htsize==0 ){ - pH->count = 0; - pH->xFree(new_elem); - return data; - } - } - if( pH->count > pH->htsize ){ - rehash(pH,pH->htsize*2); - } - assert( pH->htsize>0 ); - assert( (pH->htsize & (pH->htsize-1))==0 ); - h = hraw & (pH->htsize-1); - insertElement(pH, &pH->ht[h], new_elem); - new_elem->data = data; - return 0; -} diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/ft_hash.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/ft_hash.h deleted file mode 100644 index e79ba83890..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/ft_hash.h +++ /dev/null @@ -1,111 +0,0 @@ -/* -** 2001 September 22 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This is the header file for the generic hash-table implemenation -** used in SQLite. We've modified it slightly to serve as a standalone -** hash table implementation for the full-text indexing module. -** -*/ -#ifndef _HASH_H_ -#define _HASH_H_ - -/* Forward declarations of structures. */ -typedef struct Hash Hash; -typedef struct HashElem HashElem; - -/* A complete hash table is an instance of the following structure. -** The internals of this structure are intended to be opaque -- client -** code should not attempt to access or modify the fields of this structure -** directly. Change this structure only by using the routines below. -** However, many of the "procedures" and "functions" for modifying and -** accessing this structure are really macros, so we can't really make -** this structure opaque. -*/ -struct Hash { - char keyClass; /* HASH_INT, _POINTER, _STRING, _BINARY */ - char copyKey; /* True if copy of key made on insert */ - int count; /* Number of entries in this table */ - HashElem *first; /* The first element of the array */ - void *(*xMalloc)(int); /* malloc() function to use */ - void (*xFree)(void *); /* free() function to use */ - int htsize; /* Number of buckets in the hash table */ - struct _ht { /* the hash table */ - int count; /* Number of entries with this hash */ - HashElem *chain; /* Pointer to first entry with this hash */ - } *ht; -}; - -/* Each element in the hash table is an instance of the following -** structure. All elements are stored on a single doubly-linked list. -** -** Again, this structure is intended to be opaque, but it can't really -** be opaque because it is used by macros. -*/ -struct HashElem { - HashElem *next, *prev; /* Next and previous elements in the table */ - void *data; /* Data associated with this element */ - void *pKey; int nKey; /* Key associated with this element */ -}; - -/* -** There are 4 different modes of operation for a hash table: -** -** HASH_INT nKey is used as the key and pKey is ignored. -** -** HASH_POINTER pKey is used as the key and nKey is ignored. -** -** HASH_STRING pKey points to a string that is nKey bytes long -** (including the null-terminator, if any). Case -** is respected in comparisons. -** -** HASH_BINARY pKey points to binary data nKey bytes long. -** memcmp() is used to compare keys. -** -** A copy of the key is made for HASH_STRING and HASH_BINARY -** if the copyKey parameter to HashInit is 1. -*/ -/* #define HASH_INT 1 // NOT USED */ -/* #define HASH_POINTER 2 // NOT USED */ -#define HASH_STRING 3 -#define HASH_BINARY 4 - -/* -** Access routines. To delete, insert a NULL pointer. -*/ -void HashInit(Hash*, int keytype, int copyKey); -void *HashInsert(Hash*, const void *pKey, int nKey, void *pData); -void *HashFind(const Hash*, const void *pKey, int nKey); -void HashClear(Hash*); - -/* -** Macros for looping over all elements of a hash table. The idiom is -** like this: -** -** Hash h; -** HashElem *p; -** ... -** for(p=HashFirst(&h); p; p=HashNext(p)){ -** SomeStructure *pData = HashData(p); -** // do something with pData -** } -*/ -#define HashFirst(H) ((H)->first) -#define HashNext(E) ((E)->next) -#define HashData(E) ((E)->data) -#define HashKey(E) ((E)->pKey) -#define HashKeysize(E) ((E)->nKey) - -/* -** Number of entries in a hash table -*/ -#define HashCount(H) ((H)->count) - -#endif /* _HASH_H_ */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/fts1.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/fts1.c deleted file mode 100644 index c18ab26902..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/fts1.c +++ /dev/null @@ -1,3345 +0,0 @@ -/* fts1 has a design flaw which can lead to database corruption (see -** below). It is recommended not to use it any longer, instead use -** fts3 (or higher). If you believe that your use of fts1 is safe, -** add -DSQLITE_ENABLE_BROKEN_FTS1=1 to your CFLAGS. -*/ -#if (!defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS1)) \ - && !defined(SQLITE_ENABLE_BROKEN_FTS1) -#error fts1 has a design flaw and has been deprecated. -#endif -/* The flaw is that fts1 uses the content table's unaliased rowid as -** the unique docid. fts1 embeds the rowid in the index it builds, -** and expects the rowid to not change. The SQLite VACUUM operation -** will renumber such rowids, thereby breaking fts1. If you are using -** fts1 in a system which has disabled VACUUM, then you can continue -** to use it safely. Note that PRAGMA auto_vacuum does NOT disable -** VACUUM, though systems using auto_vacuum are unlikely to invoke -** VACUUM. -** -** fts1 should be safe even across VACUUM if you only insert documents -** and never delete. -*/ - -/* The author disclaims copyright to this source code. - * - * This is an SQLite module implementing full-text search. - */ - -/* -** The code in this file is only compiled if: -** -** * The FTS1 module is being built as an extension -** (in which case SQLITE_CORE is not defined), or -** -** * The FTS1 module is being built into the core of -** SQLite (in which case SQLITE_ENABLE_FTS1 is defined). -*/ -#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS1) - -#if defined(SQLITE_ENABLE_FTS1) && !defined(SQLITE_CORE) -# define SQLITE_CORE 1 -#endif - -#include -#include -#include -#include -#include - -#include "fts1.h" -#include "fts1_hash.h" -#include "fts1_tokenizer.h" -#include "sqlite3.h" -#include "sqlite3ext.h" -SQLITE_EXTENSION_INIT1 - - -#if 0 -# define TRACE(A) printf A; fflush(stdout) -#else -# define TRACE(A) -#endif - -/* utility functions */ - -typedef struct StringBuffer { - int len; /* length, not including null terminator */ - int alloced; /* Space allocated for s[] */ - char *s; /* Content of the string */ -} StringBuffer; - -static void initStringBuffer(StringBuffer *sb){ - sb->len = 0; - sb->alloced = 100; - sb->s = malloc(100); - sb->s[0] = '\0'; -} - -static void nappend(StringBuffer *sb, const char *zFrom, int nFrom){ - if( sb->len + nFrom >= sb->alloced ){ - sb->alloced = sb->len + nFrom + 100; - sb->s = realloc(sb->s, sb->alloced+1); - if( sb->s==0 ){ - initStringBuffer(sb); - return; - } - } - memcpy(sb->s + sb->len, zFrom, nFrom); - sb->len += nFrom; - sb->s[sb->len] = 0; -} -static void append(StringBuffer *sb, const char *zFrom){ - nappend(sb, zFrom, strlen(zFrom)); -} - -/* We encode variable-length integers in little-endian order using seven bits - * per byte as follows: -** -** KEY: -** A = 0xxxxxxx 7 bits of data and one flag bit -** B = 1xxxxxxx 7 bits of data and one flag bit -** -** 7 bits - A -** 14 bits - BA -** 21 bits - BBA -** and so on. -*/ - -/* We may need up to VARINT_MAX bytes to store an encoded 64-bit integer. */ -#define VARINT_MAX 10 - -/* Write a 64-bit variable-length integer to memory starting at p[0]. - * The length of data written will be between 1 and VARINT_MAX bytes. - * The number of bytes written is returned. */ -static int putVarint(char *p, sqlite_int64 v){ - unsigned char *q = (unsigned char *) p; - sqlite_uint64 vu = v; - do{ - *q++ = (unsigned char) ((vu & 0x7f) | 0x80); - vu >>= 7; - }while( vu!=0 ); - q[-1] &= 0x7f; /* turn off high bit in final byte */ - assert( q - (unsigned char *)p <= VARINT_MAX ); - return (int) (q - (unsigned char *)p); -} - -/* Read a 64-bit variable-length integer from memory starting at p[0]. - * Return the number of bytes read, or 0 on error. - * The value is stored in *v. */ -static int getVarint(const char *p, sqlite_int64 *v){ - const unsigned char *q = (const unsigned char *) p; - sqlite_uint64 x = 0, y = 1; - while( (*q & 0x80) == 0x80 ){ - x += y * (*q++ & 0x7f); - y <<= 7; - if( q - (unsigned char *)p >= VARINT_MAX ){ /* bad data */ - assert( 0 ); - return 0; - } - } - x += y * (*q++); - *v = (sqlite_int64) x; - return (int) (q - (unsigned char *)p); -} - -static int getVarint32(const char *p, int *pi){ - sqlite_int64 i; - int ret = getVarint(p, &i); - *pi = (int) i; - assert( *pi==i ); - return ret; -} - -/*** Document lists *** - * - * A document list holds a sorted list of varint-encoded document IDs. - * - * A doclist with type DL_POSITIONS_OFFSETS is stored like this: - * - * array { - * varint docid; - * array { - * varint position; (delta from previous position plus POS_BASE) - * varint startOffset; (delta from previous startOffset) - * varint endOffset; (delta from startOffset) - * } - * } - * - * Here, array { X } means zero or more occurrences of X, adjacent in memory. - * - * A position list may hold positions for text in multiple columns. A position - * POS_COLUMN is followed by a varint containing the index of the column for - * following positions in the list. Any positions appearing before any - * occurrences of POS_COLUMN are for column 0. - * - * A doclist with type DL_POSITIONS is like the above, but holds only docids - * and positions without offset information. - * - * A doclist with type DL_DOCIDS is like the above, but holds only docids - * without positions or offset information. - * - * On disk, every document list has positions and offsets, so we don't bother - * to serialize a doclist's type. - * - * We don't yet delta-encode document IDs; doing so will probably be a - * modest win. - * - * NOTE(shess) I've thought of a slightly (1%) better offset encoding. - * After the first offset, estimate the next offset by using the - * current token position and the previous token position and offset, - * offset to handle some variance. So the estimate would be - * (iPosition*w->iStartOffset/w->iPosition-64), which is delta-encoded - * as normal. Offsets more than 64 chars from the estimate are - * encoded as the delta to the previous start offset + 128. An - * additional tiny increment can be gained by using the end offset of - * the previous token to make the estimate a tiny bit more precise. -*/ - -/* It is not safe to call isspace(), tolower(), or isalnum() on -** hi-bit-set characters. This is the same solution used in the -** tokenizer. -*/ -/* TODO(shess) The snippet-generation code should be using the -** tokenizer-generated tokens rather than doing its own local -** tokenization. -*/ -/* TODO(shess) Is __isascii() a portable version of (c&0x80)==0? */ -static int safe_isspace(char c){ - return (c&0x80)==0 ? isspace(c) : 0; -} -static int safe_tolower(char c){ - return (c&0x80)==0 ? tolower(c) : c; -} -static int safe_isalnum(char c){ - return (c&0x80)==0 ? isalnum(c) : 0; -} - -typedef enum DocListType { - DL_DOCIDS, /* docids only */ - DL_POSITIONS, /* docids + positions */ - DL_POSITIONS_OFFSETS /* docids + positions + offsets */ -} DocListType; - -/* -** By default, only positions and not offsets are stored in the doclists. -** To change this so that offsets are stored too, compile with -** -** -DDL_DEFAULT=DL_POSITIONS_OFFSETS -** -*/ -#ifndef DL_DEFAULT -# define DL_DEFAULT DL_POSITIONS -#endif - -typedef struct DocList { - char *pData; - int nData; - DocListType iType; - int iLastColumn; /* the last column written */ - int iLastPos; /* the last position written */ - int iLastOffset; /* the last start offset written */ -} DocList; - -enum { - POS_END = 0, /* end of this position list */ - POS_COLUMN, /* followed by new column number */ - POS_BASE -}; - -/* Initialize a new DocList to hold the given data. */ -static void docListInit(DocList *d, DocListType iType, - const char *pData, int nData){ - d->nData = nData; - if( nData>0 ){ - d->pData = malloc(nData); - memcpy(d->pData, pData, nData); - } else { - d->pData = NULL; - } - d->iType = iType; - d->iLastColumn = 0; - d->iLastPos = d->iLastOffset = 0; -} - -/* Create a new dynamically-allocated DocList. */ -static DocList *docListNew(DocListType iType){ - DocList *d = (DocList *) malloc(sizeof(DocList)); - docListInit(d, iType, 0, 0); - return d; -} - -static void docListDestroy(DocList *d){ - free(d->pData); -#ifndef NDEBUG - memset(d, 0x55, sizeof(*d)); -#endif -} - -static void docListDelete(DocList *d){ - docListDestroy(d); - free(d); -} - -static char *docListEnd(DocList *d){ - return d->pData + d->nData; -} - -/* Append a varint to a DocList's data. */ -static void appendVarint(DocList *d, sqlite_int64 i){ - char c[VARINT_MAX]; - int n = putVarint(c, i); - d->pData = realloc(d->pData, d->nData + n); - memcpy(d->pData + d->nData, c, n); - d->nData += n; -} - -static void docListAddDocid(DocList *d, sqlite_int64 iDocid){ - appendVarint(d, iDocid); - if( d->iType>=DL_POSITIONS ){ - appendVarint(d, POS_END); /* initially empty position list */ - d->iLastColumn = 0; - d->iLastPos = d->iLastOffset = 0; - } -} - -/* helper function for docListAddPos and docListAddPosOffset */ -static void addPos(DocList *d, int iColumn, int iPos){ - assert( d->nData>0 ); - --d->nData; /* remove previous terminator */ - if( iColumn!=d->iLastColumn ){ - assert( iColumn>d->iLastColumn ); - appendVarint(d, POS_COLUMN); - appendVarint(d, iColumn); - d->iLastColumn = iColumn; - d->iLastPos = d->iLastOffset = 0; - } - assert( iPos>=d->iLastPos ); - appendVarint(d, iPos-d->iLastPos+POS_BASE); - d->iLastPos = iPos; -} - -/* Add a position to the last position list in a doclist. */ -static void docListAddPos(DocList *d, int iColumn, int iPos){ - assert( d->iType==DL_POSITIONS ); - addPos(d, iColumn, iPos); - appendVarint(d, POS_END); /* add new terminator */ -} - -/* -** Add a position and starting and ending offsets to a doclist. -** -** If the doclist is setup to handle only positions, then insert -** the position only and ignore the offsets. -*/ -static void docListAddPosOffset( - DocList *d, /* Doclist under construction */ - int iColumn, /* Column the inserted term is part of */ - int iPos, /* Position of the inserted term */ - int iStartOffset, /* Starting offset of inserted term */ - int iEndOffset /* Ending offset of inserted term */ -){ - assert( d->iType>=DL_POSITIONS ); - addPos(d, iColumn, iPos); - if( d->iType==DL_POSITIONS_OFFSETS ){ - assert( iStartOffset>=d->iLastOffset ); - appendVarint(d, iStartOffset-d->iLastOffset); - d->iLastOffset = iStartOffset; - assert( iEndOffset>=iStartOffset ); - appendVarint(d, iEndOffset-iStartOffset); - } - appendVarint(d, POS_END); /* add new terminator */ -} - -/* -** A DocListReader object is a cursor into a doclist. Initialize -** the cursor to the beginning of the doclist by calling readerInit(). -** Then use routines -** -** peekDocid() -** readDocid() -** readPosition() -** skipPositionList() -** and so forth... -** -** to read information out of the doclist. When we reach the end -** of the doclist, atEnd() returns TRUE. -*/ -typedef struct DocListReader { - DocList *pDoclist; /* The document list we are stepping through */ - char *p; /* Pointer to next unread byte in the doclist */ - int iLastColumn; - int iLastPos; /* the last position read, or -1 when not in a position list */ -} DocListReader; - -/* -** Initialize the DocListReader r to point to the beginning of pDoclist. -*/ -static void readerInit(DocListReader *r, DocList *pDoclist){ - r->pDoclist = pDoclist; - if( pDoclist!=NULL ){ - r->p = pDoclist->pData; - } - r->iLastColumn = -1; - r->iLastPos = -1; -} - -/* -** Return TRUE if we have reached then end of pReader and there is -** nothing else left to read. -*/ -static int atEnd(DocListReader *pReader){ - return pReader->pDoclist==0 || (pReader->p >= docListEnd(pReader->pDoclist)); -} - -/* Peek at the next docid without advancing the read pointer. -*/ -static sqlite_int64 peekDocid(DocListReader *pReader){ - sqlite_int64 ret; - assert( !atEnd(pReader) ); - assert( pReader->iLastPos==-1 ); - getVarint(pReader->p, &ret); - return ret; -} - -/* Read the next docid. See also nextDocid(). -*/ -static sqlite_int64 readDocid(DocListReader *pReader){ - sqlite_int64 ret; - assert( !atEnd(pReader) ); - assert( pReader->iLastPos==-1 ); - pReader->p += getVarint(pReader->p, &ret); - if( pReader->pDoclist->iType>=DL_POSITIONS ){ - pReader->iLastColumn = 0; - pReader->iLastPos = 0; - } - return ret; -} - -/* Read the next position and column index from a position list. - * Returns the position, or -1 at the end of the list. */ -static int readPosition(DocListReader *pReader, int *iColumn){ - int i; - int iType = pReader->pDoclist->iType; - - if( pReader->iLastPos==-1 ){ - return -1; - } - assert( !atEnd(pReader) ); - - if( iTypep += getVarint32(pReader->p, &i); - if( i==POS_END ){ - pReader->iLastColumn = pReader->iLastPos = -1; - *iColumn = -1; - return -1; - } - if( i==POS_COLUMN ){ - pReader->p += getVarint32(pReader->p, &pReader->iLastColumn); - pReader->iLastPos = 0; - pReader->p += getVarint32(pReader->p, &i); - assert( i>=POS_BASE ); - } - pReader->iLastPos += ((int) i)-POS_BASE; - if( iType>=DL_POSITIONS_OFFSETS ){ - /* Skip over offsets, ignoring them for now. */ - int iStart, iEnd; - pReader->p += getVarint32(pReader->p, &iStart); - pReader->p += getVarint32(pReader->p, &iEnd); - } - *iColumn = pReader->iLastColumn; - return pReader->iLastPos; -} - -/* Skip past the end of a position list. */ -static void skipPositionList(DocListReader *pReader){ - DocList *p = pReader->pDoclist; - if( p && p->iType>=DL_POSITIONS ){ - int iColumn; - while( readPosition(pReader, &iColumn)!=-1 ){} - } -} - -/* Skip over a docid, including its position list if the doclist has - * positions. */ -static void skipDocument(DocListReader *pReader){ - readDocid(pReader); - skipPositionList(pReader); -} - -/* Skip past all docids which are less than [iDocid]. Returns 1 if a docid - * matching [iDocid] was found. */ -static int skipToDocid(DocListReader *pReader, sqlite_int64 iDocid){ - sqlite_int64 d = 0; - while( !atEnd(pReader) && (d=peekDocid(pReader))iType>=DL_POSITIONS ){ - int iPos, iCol; - const char *zDiv = ""; - printf("("); - while( (iPos = readPosition(&r, &iCol))>=0 ){ - printf("%s%d:%d", zDiv, iCol, iPos); - zDiv = ":"; - } - printf(")"); - } - } - printf("\n"); - fflush(stdout); -} -#endif /* SQLITE_DEBUG */ - -/* Trim the given doclist to contain only positions in column - * [iRestrictColumn]. */ -static void docListRestrictColumn(DocList *in, int iRestrictColumn){ - DocListReader r; - DocList out; - - assert( in->iType>=DL_POSITIONS ); - readerInit(&r, in); - docListInit(&out, DL_POSITIONS, NULL, 0); - - while( !atEnd(&r) ){ - sqlite_int64 iDocid = readDocid(&r); - int iPos, iColumn; - - docListAddDocid(&out, iDocid); - while( (iPos = readPosition(&r, &iColumn)) != -1 ){ - if( iColumn==iRestrictColumn ){ - docListAddPos(&out, iColumn, iPos); - } - } - } - - docListDestroy(in); - *in = out; -} - -/* Trim the given doclist by discarding any docids without any remaining - * positions. */ -static void docListDiscardEmpty(DocList *in) { - DocListReader r; - DocList out; - - /* TODO: It would be nice to implement this operation in place; that - * could save a significant amount of memory in queries with long doclists. */ - assert( in->iType>=DL_POSITIONS ); - readerInit(&r, in); - docListInit(&out, DL_POSITIONS, NULL, 0); - - while( !atEnd(&r) ){ - sqlite_int64 iDocid = readDocid(&r); - int match = 0; - int iPos, iColumn; - while( (iPos = readPosition(&r, &iColumn)) != -1 ){ - if( !match ){ - docListAddDocid(&out, iDocid); - match = 1; - } - docListAddPos(&out, iColumn, iPos); - } - } - - docListDestroy(in); - *in = out; -} - -/* Helper function for docListUpdate() and docListAccumulate(). -** Splices a doclist element into the doclist represented by r, -** leaving r pointing after the newly spliced element. -*/ -static void docListSpliceElement(DocListReader *r, sqlite_int64 iDocid, - const char *pSource, int nSource){ - DocList *d = r->pDoclist; - char *pTarget; - int nTarget, found; - - found = skipToDocid(r, iDocid); - - /* Describe slice in d to place pSource/nSource. */ - pTarget = r->p; - if( found ){ - skipDocument(r); - nTarget = r->p-pTarget; - }else{ - nTarget = 0; - } - - /* The sense of the following is that there are three possibilities. - ** If nTarget==nSource, we should not move any memory nor realloc. - ** If nTarget>nSource, trim target and realloc. - ** If nTargetnSource ){ - memmove(pTarget+nSource, pTarget+nTarget, docListEnd(d)-(pTarget+nTarget)); - } - if( nTarget!=nSource ){ - int iDoclist = pTarget-d->pData; - d->pData = realloc(d->pData, d->nData+nSource-nTarget); - pTarget = d->pData+iDoclist; - } - if( nTargetnData += nSource-nTarget; - r->p = pTarget+nSource; -} - -/* Insert/update pUpdate into the doclist. */ -static void docListUpdate(DocList *d, DocList *pUpdate){ - DocListReader reader; - - assert( d!=NULL && pUpdate!=NULL ); - assert( d->iType==pUpdate->iType); - - readerInit(&reader, d); - docListSpliceElement(&reader, firstDocid(pUpdate), - pUpdate->pData, pUpdate->nData); -} - -/* Propagate elements from pUpdate to pAcc, overwriting elements with -** matching docids. -*/ -static void docListAccumulate(DocList *pAcc, DocList *pUpdate){ - DocListReader accReader, updateReader; - - /* Handle edge cases where one doclist is empty. */ - assert( pAcc!=NULL ); - if( pUpdate==NULL || pUpdate->nData==0 ) return; - if( pAcc->nData==0 ){ - pAcc->pData = malloc(pUpdate->nData); - memcpy(pAcc->pData, pUpdate->pData, pUpdate->nData); - pAcc->nData = pUpdate->nData; - return; - } - - readerInit(&accReader, pAcc); - readerInit(&updateReader, pUpdate); - - while( !atEnd(&updateReader) ){ - char *pSource = updateReader.p; - sqlite_int64 iDocid = readDocid(&updateReader); - skipPositionList(&updateReader); - docListSpliceElement(&accReader, iDocid, pSource, updateReader.p-pSource); - } -} - -/* -** Read the next docid off of pIn. Return 0 if we reach the end. -* -* TODO: This assumes that docids are never 0, but they may actually be 0 since -* users can choose docids when inserting into a full-text table. Fix this. -*/ -static sqlite_int64 nextDocid(DocListReader *pIn){ - skipPositionList(pIn); - return atEnd(pIn) ? 0 : readDocid(pIn); -} - -/* -** pLeft and pRight are two DocListReaders that are pointing to -** positions lists of the same document: iDocid. -** -** If there are no instances in pLeft or pRight where the position -** of pLeft is one less than the position of pRight, then this -** routine adds nothing to pOut. -** -** If there are one or more instances where positions from pLeft -** are exactly one less than positions from pRight, then add a new -** document record to pOut. If pOut wants to hold positions, then -** include the positions from pRight that are one more than a -** position in pLeft. In other words: pRight.iPos==pLeft.iPos+1. -** -** pLeft and pRight are left pointing at the next document record. -*/ -static void mergePosList( - DocListReader *pLeft, /* Left position list */ - DocListReader *pRight, /* Right position list */ - sqlite_int64 iDocid, /* The docid from pLeft and pRight */ - DocList *pOut /* Write the merged document record here */ -){ - int iLeftCol, iLeftPos = readPosition(pLeft, &iLeftCol); - int iRightCol, iRightPos = readPosition(pRight, &iRightCol); - int match = 0; - - /* Loop until we've reached the end of both position lists. */ - while( iLeftPos!=-1 && iRightPos!=-1 ){ - if( iLeftCol==iRightCol && iLeftPos+1==iRightPos ){ - if( !match ){ - docListAddDocid(pOut, iDocid); - match = 1; - } - if( pOut->iType>=DL_POSITIONS ){ - docListAddPos(pOut, iRightCol, iRightPos); - } - iLeftPos = readPosition(pLeft, &iLeftCol); - iRightPos = readPosition(pRight, &iRightCol); - }else if( iRightCol=0 ) skipPositionList(pLeft); - if( iRightPos>=0 ) skipPositionList(pRight); -} - -/* We have two doclists: pLeft and pRight. -** Write the phrase intersection of these two doclists into pOut. -** -** A phrase intersection means that two documents only match -** if pLeft.iPos+1==pRight.iPos. -** -** The output pOut may or may not contain positions. If pOut -** does contain positions, they are the positions of pRight. -*/ -static void docListPhraseMerge( - DocList *pLeft, /* Doclist resulting from the words on the left */ - DocList *pRight, /* Doclist for the next word to the right */ - DocList *pOut /* Write the combined doclist here */ -){ - DocListReader left, right; - sqlite_int64 docidLeft, docidRight; - - readerInit(&left, pLeft); - readerInit(&right, pRight); - docidLeft = nextDocid(&left); - docidRight = nextDocid(&right); - - while( docidLeft>0 && docidRight>0 ){ - if( docidLeftiType0 && docidRight>0 ){ - if( docidLeft0 && docidRight>0 ){ - if( docidLeft<=docidRight ){ - docListAddDocid(pOut, docidLeft); - }else{ - docListAddDocid(pOut, docidRight); - } - priorLeft = docidLeft; - if( docidLeft<=docidRight ){ - docidLeft = nextDocid(&left); - } - if( docidRight>0 && docidRight<=priorLeft ){ - docidRight = nextDocid(&right); - } - } - while( docidLeft>0 ){ - docListAddDocid(pOut, docidLeft); - docidLeft = nextDocid(&left); - } - while( docidRight>0 ){ - docListAddDocid(pOut, docidRight); - docidRight = nextDocid(&right); - } -} - -/* We have two doclists: pLeft and pRight. -** Write into pOut all documents that occur in pLeft but not -** in pRight. -** -** Only docids are matched. Position information is ignored. -** -** The output pOut never holds positions. -*/ -static void docListExceptMerge( - DocList *pLeft, /* Doclist resulting from the words on the left */ - DocList *pRight, /* Doclist for the next word to the right */ - DocList *pOut /* Write the combined doclist here */ -){ - DocListReader left, right; - sqlite_int64 docidLeft, docidRight, priorLeft; - - readerInit(&left, pLeft); - readerInit(&right, pRight); - docidLeft = nextDocid(&left); - docidRight = nextDocid(&right); - - while( docidLeft>0 && docidRight>0 ){ - priorLeft = docidLeft; - if( docidLeft0 && docidRight<=priorLeft ){ - docidRight = nextDocid(&right); - } - } - while( docidLeft>0 ){ - docListAddDocid(pOut, docidLeft); - docidLeft = nextDocid(&left); - } -} - -static char *string_dup_n(const char *s, int n){ - char *str = malloc(n + 1); - memcpy(str, s, n); - str[n] = '\0'; - return str; -} - -/* Duplicate a string; the caller must free() the returned string. - * (We don't use strdup() since it is not part of the standard C library and - * may not be available everywhere.) */ -static char *string_dup(const char *s){ - return string_dup_n(s, strlen(s)); -} - -/* Format a string, replacing each occurrence of the % character with - * zDb.zName. This may be more convenient than sqlite_mprintf() - * when one string is used repeatedly in a format string. - * The caller must free() the returned string. */ -static char *string_format(const char *zFormat, - const char *zDb, const char *zName){ - const char *p; - size_t len = 0; - size_t nDb = strlen(zDb); - size_t nName = strlen(zName); - size_t nFullTableName = nDb+1+nName; - char *result; - char *r; - - /* first compute length needed */ - for(p = zFormat ; *p ; ++p){ - len += (*p=='%' ? nFullTableName : 1); - } - len += 1; /* for null terminator */ - - r = result = malloc(len); - for(p = zFormat; *p; ++p){ - if( *p=='%' ){ - memcpy(r, zDb, nDb); - r += nDb; - *r++ = '.'; - memcpy(r, zName, nName); - r += nName; - } else { - *r++ = *p; - } - } - *r++ = '\0'; - assert( r == result + len ); - return result; -} - -static int sql_exec(sqlite3 *db, const char *zDb, const char *zName, - const char *zFormat){ - char *zCommand = string_format(zFormat, zDb, zName); - int rc; - TRACE(("FTS1 sql: %s\n", zCommand)); - rc = sqlite3_exec(db, zCommand, NULL, 0, NULL); - free(zCommand); - return rc; -} - -static int sql_prepare(sqlite3 *db, const char *zDb, const char *zName, - sqlite3_stmt **ppStmt, const char *zFormat){ - char *zCommand = string_format(zFormat, zDb, zName); - int rc; - TRACE(("FTS1 prepare: %s\n", zCommand)); - rc = sqlite3_prepare(db, zCommand, -1, ppStmt, NULL); - free(zCommand); - return rc; -} - -/* end utility functions */ - -/* Forward reference */ -typedef struct fulltext_vtab fulltext_vtab; - -/* A single term in a query is represented by an instances of -** the following structure. -*/ -typedef struct QueryTerm { - short int nPhrase; /* How many following terms are part of the same phrase */ - short int iPhrase; /* This is the i-th term of a phrase. */ - short int iColumn; /* Column of the index that must match this term */ - signed char isOr; /* this term is preceded by "OR" */ - signed char isNot; /* this term is preceded by "-" */ - char *pTerm; /* text of the term. '\000' terminated. malloced */ - int nTerm; /* Number of bytes in pTerm[] */ -} QueryTerm; - - -/* A query string is parsed into a Query structure. - * - * We could, in theory, allow query strings to be complicated - * nested expressions with precedence determined by parentheses. - * But none of the major search engines do this. (Perhaps the - * feeling is that an parenthesized expression is two complex of - * an idea for the average user to grasp.) Taking our lead from - * the major search engines, we will allow queries to be a list - * of terms (with an implied AND operator) or phrases in double-quotes, - * with a single optional "-" before each non-phrase term to designate - * negation and an optional OR connector. - * - * OR binds more tightly than the implied AND, which is what the - * major search engines seem to do. So, for example: - * - * [one two OR three] ==> one AND (two OR three) - * [one OR two three] ==> (one OR two) AND three - * - * A "-" before a term matches all entries that lack that term. - * The "-" must occur immediately before the term with in intervening - * space. This is how the search engines do it. - * - * A NOT term cannot be the right-hand operand of an OR. If this - * occurs in the query string, the NOT is ignored: - * - * [one OR -two] ==> one OR two - * - */ -typedef struct Query { - fulltext_vtab *pFts; /* The full text index */ - int nTerms; /* Number of terms in the query */ - QueryTerm *pTerms; /* Array of terms. Space obtained from malloc() */ - int nextIsOr; /* Set the isOr flag on the next inserted term */ - int nextColumn; /* Next word parsed must be in this column */ - int dfltColumn; /* The default column */ -} Query; - - -/* -** An instance of the following structure keeps track of generated -** matching-word offset information and snippets. -*/ -typedef struct Snippet { - int nMatch; /* Total number of matches */ - int nAlloc; /* Space allocated for aMatch[] */ - struct snippetMatch { /* One entry for each matching term */ - char snStatus; /* Status flag for use while constructing snippets */ - short int iCol; /* The column that contains the match */ - short int iTerm; /* The index in Query.pTerms[] of the matching term */ - short int nByte; /* Number of bytes in the term */ - int iStart; /* The offset to the first character of the term */ - } *aMatch; /* Points to space obtained from malloc */ - char *zOffset; /* Text rendering of aMatch[] */ - int nOffset; /* strlen(zOffset) */ - char *zSnippet; /* Snippet text */ - int nSnippet; /* strlen(zSnippet) */ -} Snippet; - - -typedef enum QueryType { - QUERY_GENERIC, /* table scan */ - QUERY_ROWID, /* lookup by rowid */ - QUERY_FULLTEXT /* QUERY_FULLTEXT + [i] is a full-text search for column i*/ -} QueryType; - -/* TODO(shess) CHUNK_MAX controls how much data we allow in segment 0 -** before we start aggregating into larger segments. Lower CHUNK_MAX -** means that for a given input we have more individual segments per -** term, which means more rows in the table and a bigger index (due to -** both more rows and bigger rowids). But it also reduces the average -** cost of adding new elements to the segment 0 doclist, and it seems -** to reduce the number of pages read and written during inserts. 256 -** was chosen by measuring insertion times for a certain input (first -** 10k documents of Enron corpus), though including query performance -** in the decision may argue for a larger value. -*/ -#define CHUNK_MAX 256 - -typedef enum fulltext_statement { - CONTENT_INSERT_STMT, - CONTENT_SELECT_STMT, - CONTENT_UPDATE_STMT, - CONTENT_DELETE_STMT, - - TERM_SELECT_STMT, - TERM_SELECT_ALL_STMT, - TERM_INSERT_STMT, - TERM_UPDATE_STMT, - TERM_DELETE_STMT, - - MAX_STMT /* Always at end! */ -} fulltext_statement; - -/* These must exactly match the enum above. */ -/* TODO(adam): Is there some risk that a statement (in particular, -** pTermSelectStmt) will be used in two cursors at once, e.g. if a -** query joins a virtual table to itself? If so perhaps we should -** move some of these to the cursor object. -*/ -static const char *const fulltext_zStatement[MAX_STMT] = { - /* CONTENT_INSERT */ NULL, /* generated in contentInsertStatement() */ - /* CONTENT_SELECT */ "select * from %_content where rowid = ?", - /* CONTENT_UPDATE */ NULL, /* generated in contentUpdateStatement() */ - /* CONTENT_DELETE */ "delete from %_content where rowid = ?", - - /* TERM_SELECT */ - "select rowid, doclist from %_term where term = ? and segment = ?", - /* TERM_SELECT_ALL */ - "select doclist from %_term where term = ? order by segment", - /* TERM_INSERT */ - "insert into %_term (rowid, term, segment, doclist) values (?, ?, ?, ?)", - /* TERM_UPDATE */ "update %_term set doclist = ? where rowid = ?", - /* TERM_DELETE */ "delete from %_term where rowid = ?", -}; - -/* -** A connection to a fulltext index is an instance of the following -** structure. The xCreate and xConnect methods create an instance -** of this structure and xDestroy and xDisconnect free that instance. -** All other methods receive a pointer to the structure as one of their -** arguments. -*/ -struct fulltext_vtab { - sqlite3_vtab base; /* Base class used by SQLite core */ - sqlite3 *db; /* The database connection */ - const char *zDb; /* logical database name */ - const char *zName; /* virtual table name */ - int nColumn; /* number of columns in virtual table */ - char **azColumn; /* column names. malloced */ - char **azContentColumn; /* column names in content table; malloced */ - sqlite3_tokenizer *pTokenizer; /* tokenizer for inserts and queries */ - - /* Precompiled statements which we keep as long as the table is - ** open. - */ - sqlite3_stmt *pFulltextStatements[MAX_STMT]; -}; - -/* -** When the core wants to do a query, it create a cursor using a -** call to xOpen. This structure is an instance of a cursor. It -** is destroyed by xClose. -*/ -typedef struct fulltext_cursor { - sqlite3_vtab_cursor base; /* Base class used by SQLite core */ - QueryType iCursorType; /* Copy of sqlite3_index_info.idxNum */ - sqlite3_stmt *pStmt; /* Prepared statement in use by the cursor */ - int eof; /* True if at End Of Results */ - Query q; /* Parsed query string */ - Snippet snippet; /* Cached snippet for the current row */ - int iColumn; /* Column being searched */ - DocListReader result; /* used when iCursorType == QUERY_FULLTEXT */ -} fulltext_cursor; - -static struct fulltext_vtab *cursor_vtab(fulltext_cursor *c){ - return (fulltext_vtab *) c->base.pVtab; -} - -static const sqlite3_module fulltextModule; /* forward declaration */ - -/* Append a list of strings separated by commas to a StringBuffer. */ -static void appendList(StringBuffer *sb, int nString, char **azString){ - int i; - for(i=0; i0 ) append(sb, ", "); - append(sb, azString[i]); - } -} - -/* Return a dynamically generated statement of the form - * insert into %_content (rowid, ...) values (?, ...) - */ -static const char *contentInsertStatement(fulltext_vtab *v){ - StringBuffer sb; - int i; - - initStringBuffer(&sb); - append(&sb, "insert into %_content (rowid, "); - appendList(&sb, v->nColumn, v->azContentColumn); - append(&sb, ") values (?"); - for(i=0; inColumn; ++i) - append(&sb, ", ?"); - append(&sb, ")"); - return sb.s; -} - -/* Return a dynamically generated statement of the form - * update %_content set [col_0] = ?, [col_1] = ?, ... - * where rowid = ? - */ -static const char *contentUpdateStatement(fulltext_vtab *v){ - StringBuffer sb; - int i; - - initStringBuffer(&sb); - append(&sb, "update %_content set "); - for(i=0; inColumn; ++i) { - if( i>0 ){ - append(&sb, ", "); - } - append(&sb, v->azContentColumn[i]); - append(&sb, " = ?"); - } - append(&sb, " where rowid = ?"); - return sb.s; -} - -/* Puts a freshly-prepared statement determined by iStmt in *ppStmt. -** If the indicated statement has never been prepared, it is prepared -** and cached, otherwise the cached version is reset. -*/ -static int sql_get_statement(fulltext_vtab *v, fulltext_statement iStmt, - sqlite3_stmt **ppStmt){ - assert( iStmtpFulltextStatements[iStmt]==NULL ){ - const char *zStmt; - int rc; - switch( iStmt ){ - case CONTENT_INSERT_STMT: - zStmt = contentInsertStatement(v); break; - case CONTENT_UPDATE_STMT: - zStmt = contentUpdateStatement(v); break; - default: - zStmt = fulltext_zStatement[iStmt]; - } - rc = sql_prepare(v->db, v->zDb, v->zName, &v->pFulltextStatements[iStmt], - zStmt); - if( zStmt != fulltext_zStatement[iStmt]) free((void *) zStmt); - if( rc!=SQLITE_OK ) return rc; - } else { - int rc = sqlite3_reset(v->pFulltextStatements[iStmt]); - if( rc!=SQLITE_OK ) return rc; - } - - *ppStmt = v->pFulltextStatements[iStmt]; - return SQLITE_OK; -} - -/* Step the indicated statement, handling errors SQLITE_BUSY (by -** retrying) and SQLITE_SCHEMA (by re-preparing and transferring -** bindings to the new statement). -** TODO(adam): We should extend this function so that it can work with -** statements declared locally, not only globally cached statements. -*/ -static int sql_step_statement(fulltext_vtab *v, fulltext_statement iStmt, - sqlite3_stmt **ppStmt){ - int rc; - sqlite3_stmt *s = *ppStmt; - assert( iStmtpFulltextStatements[iStmt] ); - - while( (rc=sqlite3_step(s))!=SQLITE_DONE && rc!=SQLITE_ROW ){ - if( rc==SQLITE_BUSY ) continue; - if( rc!=SQLITE_ERROR ) return rc; - - /* If an SQLITE_SCHEMA error has occurred, then finalizing this - * statement is going to delete the fulltext_vtab structure. If - * the statement just executed is in the pFulltextStatements[] - * array, it will be finalized twice. So remove it before - * calling sqlite3_finalize(). - */ - v->pFulltextStatements[iStmt] = NULL; - rc = sqlite3_finalize(s); - break; - } - return rc; - - err: - sqlite3_finalize(s); - return rc; -} - -/* Like sql_step_statement(), but convert SQLITE_DONE to SQLITE_OK. -** Useful for statements like UPDATE, where we expect no results. -*/ -static int sql_single_step_statement(fulltext_vtab *v, - fulltext_statement iStmt, - sqlite3_stmt **ppStmt){ - int rc = sql_step_statement(v, iStmt, ppStmt); - return (rc==SQLITE_DONE) ? SQLITE_OK : rc; -} - -/* insert into %_content (rowid, ...) values ([rowid], [pValues]) */ -static int content_insert(fulltext_vtab *v, sqlite3_value *rowid, - sqlite3_value **pValues){ - sqlite3_stmt *s; - int i; - int rc = sql_get_statement(v, CONTENT_INSERT_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_value(s, 1, rowid); - if( rc!=SQLITE_OK ) return rc; - - for(i=0; inColumn; ++i){ - rc = sqlite3_bind_value(s, 2+i, pValues[i]); - if( rc!=SQLITE_OK ) return rc; - } - - return sql_single_step_statement(v, CONTENT_INSERT_STMT, &s); -} - -/* update %_content set col0 = pValues[0], col1 = pValues[1], ... - * where rowid = [iRowid] */ -static int content_update(fulltext_vtab *v, sqlite3_value **pValues, - sqlite_int64 iRowid){ - sqlite3_stmt *s; - int i; - int rc = sql_get_statement(v, CONTENT_UPDATE_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - for(i=0; inColumn; ++i){ - rc = sqlite3_bind_value(s, 1+i, pValues[i]); - if( rc!=SQLITE_OK ) return rc; - } - - rc = sqlite3_bind_int64(s, 1+v->nColumn, iRowid); - if( rc!=SQLITE_OK ) return rc; - - return sql_single_step_statement(v, CONTENT_UPDATE_STMT, &s); -} - -static void freeStringArray(int nString, const char **pString){ - int i; - - for (i=0 ; i < nString ; ++i) { - if( pString[i]!=NULL ) free((void *) pString[i]); - } - free((void *) pString); -} - -/* select * from %_content where rowid = [iRow] - * The caller must delete the returned array and all strings in it. - * null fields will be NULL in the returned array. - * - * TODO: Perhaps we should return pointer/length strings here for consistency - * with other code which uses pointer/length. */ -static int content_select(fulltext_vtab *v, sqlite_int64 iRow, - const char ***pValues){ - sqlite3_stmt *s; - const char **values; - int i; - int rc; - - *pValues = NULL; - - rc = sql_get_statement(v, CONTENT_SELECT_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int64(s, 1, iRow); - if( rc!=SQLITE_OK ) return rc; - - rc = sql_step_statement(v, CONTENT_SELECT_STMT, &s); - if( rc!=SQLITE_ROW ) return rc; - - values = (const char **) malloc(v->nColumn * sizeof(const char *)); - for(i=0; inColumn; ++i){ - if( sqlite3_column_type(s, i)==SQLITE_NULL ){ - values[i] = NULL; - }else{ - values[i] = string_dup((char*)sqlite3_column_text(s, i)); - } - } - - /* We expect only one row. We must execute another sqlite3_step() - * to complete the iteration; otherwise the table will remain locked. */ - rc = sqlite3_step(s); - if( rc==SQLITE_DONE ){ - *pValues = values; - return SQLITE_OK; - } - - freeStringArray(v->nColumn, values); - return rc; -} - -/* delete from %_content where rowid = [iRow ] */ -static int content_delete(fulltext_vtab *v, sqlite_int64 iRow){ - sqlite3_stmt *s; - int rc = sql_get_statement(v, CONTENT_DELETE_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int64(s, 1, iRow); - if( rc!=SQLITE_OK ) return rc; - - return sql_single_step_statement(v, CONTENT_DELETE_STMT, &s); -} - -/* select rowid, doclist from %_term - * where term = [pTerm] and segment = [iSegment] - * If found, returns SQLITE_ROW; the caller must free the - * returned doclist. If no rows found, returns SQLITE_DONE. */ -static int term_select(fulltext_vtab *v, const char *pTerm, int nTerm, - int iSegment, - sqlite_int64 *rowid, DocList *out){ - sqlite3_stmt *s; - int rc = sql_get_statement(v, TERM_SELECT_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_text(s, 1, pTerm, nTerm, SQLITE_STATIC); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int(s, 2, iSegment); - if( rc!=SQLITE_OK ) return rc; - - rc = sql_step_statement(v, TERM_SELECT_STMT, &s); - if( rc!=SQLITE_ROW ) return rc; - - *rowid = sqlite3_column_int64(s, 0); - docListInit(out, DL_DEFAULT, - sqlite3_column_blob(s, 1), sqlite3_column_bytes(s, 1)); - - /* We expect only one row. We must execute another sqlite3_step() - * to complete the iteration; otherwise the table will remain locked. */ - rc = sqlite3_step(s); - return rc==SQLITE_DONE ? SQLITE_ROW : rc; -} - -/* Load the segment doclists for term pTerm and merge them in -** appropriate order into out. Returns SQLITE_OK if successful. If -** there are no segments for pTerm, successfully returns an empty -** doclist in out. -** -** Each document consists of 1 or more "columns". The number of -** columns is v->nColumn. If iColumn==v->nColumn, then return -** position information about all columns. If iColumnnColumn, -** then only return position information about the iColumn-th column -** (where the first column is 0). -*/ -static int term_select_all( - fulltext_vtab *v, /* The fulltext index we are querying against */ - int iColumn, /* If nColumn ){ /* querying a single column */ - docListRestrictColumn(&old, iColumn); - } - - /* doclist contains the newer data, so write it over old. Then - ** steal accumulated result for doclist. - */ - docListAccumulate(&old, &doclist); - docListDestroy(&doclist); - doclist = old; - } - if( rc!=SQLITE_DONE ){ - docListDestroy(&doclist); - return rc; - } - - docListDiscardEmpty(&doclist); - *out = doclist; - return SQLITE_OK; -} - -/* insert into %_term (rowid, term, segment, doclist) - values ([piRowid], [pTerm], [iSegment], [doclist]) -** Lets sqlite select rowid if piRowid is NULL, else uses *piRowid. -** -** NOTE(shess) piRowid is IN, with values of "space of int64" plus -** null, it is not used to pass data back to the caller. -*/ -static int term_insert(fulltext_vtab *v, sqlite_int64 *piRowid, - const char *pTerm, int nTerm, - int iSegment, DocList *doclist){ - sqlite3_stmt *s; - int rc = sql_get_statement(v, TERM_INSERT_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - if( piRowid==NULL ){ - rc = sqlite3_bind_null(s, 1); - }else{ - rc = sqlite3_bind_int64(s, 1, *piRowid); - } - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_text(s, 2, pTerm, nTerm, SQLITE_STATIC); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int(s, 3, iSegment); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_blob(s, 4, doclist->pData, doclist->nData, SQLITE_STATIC); - if( rc!=SQLITE_OK ) return rc; - - return sql_single_step_statement(v, TERM_INSERT_STMT, &s); -} - -/* update %_term set doclist = [doclist] where rowid = [rowid] */ -static int term_update(fulltext_vtab *v, sqlite_int64 rowid, - DocList *doclist){ - sqlite3_stmt *s; - int rc = sql_get_statement(v, TERM_UPDATE_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_blob(s, 1, doclist->pData, doclist->nData, SQLITE_STATIC); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int64(s, 2, rowid); - if( rc!=SQLITE_OK ) return rc; - - return sql_single_step_statement(v, TERM_UPDATE_STMT, &s); -} - -static int term_delete(fulltext_vtab *v, sqlite_int64 rowid){ - sqlite3_stmt *s; - int rc = sql_get_statement(v, TERM_DELETE_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int64(s, 1, rowid); - if( rc!=SQLITE_OK ) return rc; - - return sql_single_step_statement(v, TERM_DELETE_STMT, &s); -} - -/* -** Free the memory used to contain a fulltext_vtab structure. -*/ -static void fulltext_vtab_destroy(fulltext_vtab *v){ - int iStmt, i; - - TRACE(("FTS1 Destroy %p\n", v)); - for( iStmt=0; iStmtpFulltextStatements[iStmt]!=NULL ){ - sqlite3_finalize(v->pFulltextStatements[iStmt]); - v->pFulltextStatements[iStmt] = NULL; - } - } - - if( v->pTokenizer!=NULL ){ - v->pTokenizer->pModule->xDestroy(v->pTokenizer); - v->pTokenizer = NULL; - } - - free(v->azColumn); - for(i = 0; i < v->nColumn; ++i) { - sqlite3_free(v->azContentColumn[i]); - } - free(v->azContentColumn); - free(v); -} - -/* -** Token types for parsing the arguments to xConnect or xCreate. -*/ -#define TOKEN_EOF 0 /* End of file */ -#define TOKEN_SPACE 1 /* Any kind of whitespace */ -#define TOKEN_ID 2 /* An identifier */ -#define TOKEN_STRING 3 /* A string literal */ -#define TOKEN_PUNCT 4 /* A single punctuation character */ - -/* -** If X is a character that can be used in an identifier then -** IdChar(X) will be true. Otherwise it is false. -** -** For ASCII, any character with the high-order bit set is -** allowed in an identifier. For 7-bit characters, -** sqlite3IsIdChar[X] must be 1. -** -** Ticket #1066. the SQL standard does not allow '$' in the -** middle of identfiers. But many SQL implementations do. -** SQLite will allow '$' in identifiers for compatibility. -** But the feature is undocumented. -*/ -static const char isIdChar[] = { -/* x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 xA xB xC xD xE xF */ - 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 2x */ - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, /* 3x */ - 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 4x */ - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, /* 5x */ - 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 6x */ - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, /* 7x */ -}; -#define IdChar(C) (((c=C)&0x80)!=0 || (c>0x1f && isIdChar[c-0x20])) - - -/* -** Return the length of the token that begins at z[0]. -** Store the token type in *tokenType before returning. -*/ -static int getToken(const char *z, int *tokenType){ - int i, c; - switch( *z ){ - case 0: { - *tokenType = TOKEN_EOF; - return 0; - } - case ' ': case '\t': case '\n': case '\f': case '\r': { - for(i=1; safe_isspace(z[i]); i++){} - *tokenType = TOKEN_SPACE; - return i; - } - case '`': - case '\'': - case '"': { - int delim = z[0]; - for(i=1; (c=z[i])!=0; i++){ - if( c==delim ){ - if( z[i+1]==delim ){ - i++; - }else{ - break; - } - } - } - *tokenType = TOKEN_STRING; - return i + (c!=0); - } - case '[': { - for(i=1, c=z[0]; c!=']' && (c=z[i])!=0; i++){} - *tokenType = TOKEN_ID; - return i; - } - default: { - if( !IdChar(*z) ){ - break; - } - for(i=1; IdChar(z[i]); i++){} - *tokenType = TOKEN_ID; - return i; - } - } - *tokenType = TOKEN_PUNCT; - return 1; -} - -/* -** A token extracted from a string is an instance of the following -** structure. -*/ -typedef struct Token { - const char *z; /* Pointer to token text. Not '\000' terminated */ - short int n; /* Length of the token text in bytes. */ -} Token; - -/* -** Given a input string (which is really one of the argv[] parameters -** passed into xConnect or xCreate) split the string up into tokens. -** Return an array of pointers to '\000' terminated strings, one string -** for each non-whitespace token. -** -** The returned array is terminated by a single NULL pointer. -** -** Space to hold the returned array is obtained from a single -** malloc and should be freed by passing the return value to free(). -** The individual strings within the token list are all a part of -** the single memory allocation and will all be freed at once. -*/ -static char **tokenizeString(const char *z, int *pnToken){ - int nToken = 0; - Token *aToken = malloc( strlen(z) * sizeof(aToken[0]) ); - int n = 1; - int e, i; - int totalSize = 0; - char **azToken; - char *zCopy; - while( n>0 ){ - n = getToken(z, &e); - if( e!=TOKEN_SPACE ){ - aToken[nToken].z = z; - aToken[nToken].n = n; - nToken++; - totalSize += n+1; - } - z += n; - } - azToken = (char**)malloc( nToken*sizeof(char*) + totalSize ); - zCopy = (char*)&azToken[nToken]; - nToken--; - for(i=0; i=0 ){ - azIn[j] = azIn[i]; - } - j++; - } - } - azIn[j] = 0; - } -} - - -/* -** Find the first alphanumeric token in the string zIn. Null-terminate -** this token. Remove any quotation marks. And return a pointer to -** the result. -*/ -static char *firstToken(char *zIn, char **pzTail){ - int n, ttype; - while(1){ - n = getToken(zIn, &ttype); - if( ttype==TOKEN_SPACE ){ - zIn += n; - }else if( ttype==TOKEN_EOF ){ - *pzTail = zIn; - return 0; - }else{ - zIn[n] = 0; - *pzTail = &zIn[1]; - dequoteString(zIn); - return zIn; - } - } - /*NOTREACHED*/ -} - -/* Return true if... -** -** * s begins with the string t, ignoring case -** * s is longer than t -** * The first character of s beyond t is not a alphanumeric -** -** Ignore leading space in *s. -** -** To put it another way, return true if the first token of -** s[] is t[]. -*/ -static int startsWith(const char *s, const char *t){ - while( safe_isspace(*s) ){ s++; } - while( *t ){ - if( safe_tolower(*s++)!=safe_tolower(*t++) ) return 0; - } - return *s!='_' && !safe_isalnum(*s); -} - -/* -** An instance of this structure defines the "spec" of a -** full text index. This structure is populated by parseSpec -** and use by fulltextConnect and fulltextCreate. -*/ -typedef struct TableSpec { - const char *zDb; /* Logical database name */ - const char *zName; /* Name of the full-text index */ - int nColumn; /* Number of columns to be indexed */ - char **azColumn; /* Original names of columns to be indexed */ - char **azContentColumn; /* Column names for %_content */ - char **azTokenizer; /* Name of tokenizer and its arguments */ -} TableSpec; - -/* -** Reclaim all of the memory used by a TableSpec -*/ -static void clearTableSpec(TableSpec *p) { - free(p->azColumn); - free(p->azContentColumn); - free(p->azTokenizer); -} - -/* Parse a CREATE VIRTUAL TABLE statement, which looks like this: - * - * CREATE VIRTUAL TABLE email - * USING fts1(subject, body, tokenize mytokenizer(myarg)) - * - * We return parsed information in a TableSpec structure. - * - */ -static int parseSpec(TableSpec *pSpec, int argc, const char *const*argv, - char**pzErr){ - int i, n; - char *z, *zDummy; - char **azArg; - const char *zTokenizer = 0; /* argv[] entry describing the tokenizer */ - - assert( argc>=3 ); - /* Current interface: - ** argv[0] - module name - ** argv[1] - database name - ** argv[2] - table name - ** argv[3..] - columns, optionally followed by tokenizer specification - ** and snippet delimiters specification. - */ - - /* Make a copy of the complete argv[][] array in a single allocation. - ** The argv[][] array is read-only and transient. We can write to the - ** copy in order to modify things and the copy is persistent. - */ - memset(pSpec, 0, sizeof(*pSpec)); - for(i=n=0; izDb = azArg[1]; - pSpec->zName = azArg[2]; - pSpec->nColumn = 0; - pSpec->azColumn = azArg; - zTokenizer = "tokenize simple"; - for(i=3; inColumn] = firstToken(azArg[i], &zDummy); - pSpec->nColumn++; - } - } - if( pSpec->nColumn==0 ){ - azArg[0] = "content"; - pSpec->nColumn = 1; - } - - /* - ** Construct the list of content column names. - ** - ** Each content column name will be of the form cNNAAAA - ** where NN is the column number and AAAA is the sanitized - ** column name. "sanitized" means that special characters are - ** converted to "_". The cNN prefix guarantees that all column - ** names are unique. - ** - ** The AAAA suffix is not strictly necessary. It is included - ** for the convenience of people who might examine the generated - ** %_content table and wonder what the columns are used for. - */ - pSpec->azContentColumn = malloc( pSpec->nColumn * sizeof(char *) ); - if( pSpec->azContentColumn==0 ){ - clearTableSpec(pSpec); - return SQLITE_NOMEM; - } - for(i=0; inColumn; i++){ - char *p; - pSpec->azContentColumn[i] = sqlite3_mprintf("c%d%s", i, azArg[i]); - for (p = pSpec->azContentColumn[i]; *p ; ++p) { - if( !safe_isalnum(*p) ) *p = '_'; - } - } - - /* - ** Parse the tokenizer specification string. - */ - pSpec->azTokenizer = tokenizeString(zTokenizer, &n); - tokenListToIdList(pSpec->azTokenizer); - - return SQLITE_OK; -} - -/* -** Generate a CREATE TABLE statement that describes the schema of -** the virtual table. Return a pointer to this schema string. -** -** Space is obtained from sqlite3_mprintf() and should be freed -** using sqlite3_free(). -*/ -static char *fulltextSchema( - int nColumn, /* Number of columns */ - const char *const* azColumn, /* List of columns */ - const char *zTableName /* Name of the table */ -){ - int i; - char *zSchema, *zNext; - const char *zSep = "("; - zSchema = sqlite3_mprintf("CREATE TABLE x"); - for(i=0; ibase */ - v->db = db; - v->zDb = spec->zDb; /* Freed when azColumn is freed */ - v->zName = spec->zName; /* Freed when azColumn is freed */ - v->nColumn = spec->nColumn; - v->azContentColumn = spec->azContentColumn; - spec->azContentColumn = 0; - v->azColumn = spec->azColumn; - spec->azColumn = 0; - - if( spec->azTokenizer==0 ){ - return SQLITE_NOMEM; - } - /* TODO(shess) For now, add new tokenizers as else if clauses. */ - if( spec->azTokenizer[0]==0 || startsWith(spec->azTokenizer[0], "simple") ){ - sqlite3Fts1SimpleTokenizerModule(&m); - }else if( startsWith(spec->azTokenizer[0], "porter") ){ - sqlite3Fts1PorterTokenizerModule(&m); - }else{ - *pzErr = sqlite3_mprintf("unknown tokenizer: %s", spec->azTokenizer[0]); - rc = SQLITE_ERROR; - goto err; - } - for(n=0; spec->azTokenizer[n]; n++){} - if( n ){ - rc = m->xCreate(n-1, (const char*const*)&spec->azTokenizer[1], - &v->pTokenizer); - }else{ - rc = m->xCreate(0, 0, &v->pTokenizer); - } - if( rc!=SQLITE_OK ) goto err; - v->pTokenizer->pModule = m; - - /* TODO: verify the existence of backing tables foo_content, foo_term */ - - schema = fulltextSchema(v->nColumn, (const char*const*)v->azColumn, - spec->zName); - rc = sqlite3_declare_vtab(db, schema); - sqlite3_free(schema); - if( rc!=SQLITE_OK ) goto err; - - memset(v->pFulltextStatements, 0, sizeof(v->pFulltextStatements)); - - *ppVTab = &v->base; - TRACE(("FTS1 Connect %p\n", v)); - - return rc; - -err: - fulltext_vtab_destroy(v); - return rc; -} - -static int fulltextConnect( - sqlite3 *db, - void *pAux, - int argc, const char *const*argv, - sqlite3_vtab **ppVTab, - char **pzErr -){ - TableSpec spec; - int rc = parseSpec(&spec, argc, argv, pzErr); - if( rc!=SQLITE_OK ) return rc; - - rc = constructVtab(db, &spec, ppVTab, pzErr); - clearTableSpec(&spec); - return rc; -} - - /* The %_content table holds the text of each document, with - ** the rowid used as the docid. - ** - ** The %_term table maps each term to a document list blob - ** containing elements sorted by ascending docid, each element - ** encoded as: - ** - ** docid varint-encoded - ** token elements: - ** position+1 varint-encoded as delta from previous position - ** start offset varint-encoded as delta from previous start offset - ** end offset varint-encoded as delta from start offset - ** - ** The sentinel position of 0 indicates the end of the token list. - ** - ** Additionally, doclist blobs are chunked into multiple segments, - ** using segment to order the segments. New elements are added to - ** the segment at segment 0, until it exceeds CHUNK_MAX. Then - ** segment 0 is deleted, and the doclist is inserted at segment 1. - ** If there is already a doclist at segment 1, the segment 0 doclist - ** is merged with it, the segment 1 doclist is deleted, and the - ** merged doclist is inserted at segment 2, repeating those - ** operations until an insert succeeds. - ** - ** Since this structure doesn't allow us to update elements in place - ** in case of deletion or update, these are simply written to - ** segment 0 (with an empty token list in case of deletion), with - ** docListAccumulate() taking care to retain lower-segment - ** information in preference to higher-segment information. - */ - /* TODO(shess) Provide a VACUUM type operation which both removes - ** deleted elements which are no longer necessary, and duplicated - ** elements. I suspect this will probably not be necessary in - ** practice, though. - */ -static int fulltextCreate(sqlite3 *db, void *pAux, - int argc, const char * const *argv, - sqlite3_vtab **ppVTab, char **pzErr){ - int rc; - TableSpec spec; - StringBuffer schema; - TRACE(("FTS1 Create\n")); - - rc = parseSpec(&spec, argc, argv, pzErr); - if( rc!=SQLITE_OK ) return rc; - - initStringBuffer(&schema); - append(&schema, "CREATE TABLE %_content("); - appendList(&schema, spec.nColumn, spec.azContentColumn); - append(&schema, ")"); - rc = sql_exec(db, spec.zDb, spec.zName, schema.s); - free(schema.s); - if( rc!=SQLITE_OK ) goto out; - - rc = sql_exec(db, spec.zDb, spec.zName, - "create table %_term(term text, segment integer, doclist blob, " - "primary key(term, segment));"); - if( rc!=SQLITE_OK ) goto out; - - rc = constructVtab(db, &spec, ppVTab, pzErr); - -out: - clearTableSpec(&spec); - return rc; -} - -/* Decide how to handle an SQL query. */ -static int fulltextBestIndex(sqlite3_vtab *pVTab, sqlite3_index_info *pInfo){ - int i; - TRACE(("FTS1 BestIndex\n")); - - for(i=0; inConstraint; ++i){ - const struct sqlite3_index_constraint *pConstraint; - pConstraint = &pInfo->aConstraint[i]; - if( pConstraint->usable ) { - if( pConstraint->iColumn==-1 && - pConstraint->op==SQLITE_INDEX_CONSTRAINT_EQ ){ - pInfo->idxNum = QUERY_ROWID; /* lookup by rowid */ - TRACE(("FTS1 QUERY_ROWID\n")); - } else if( pConstraint->iColumn>=0 && - pConstraint->op==SQLITE_INDEX_CONSTRAINT_MATCH ){ - /* full-text search */ - pInfo->idxNum = QUERY_FULLTEXT + pConstraint->iColumn; - TRACE(("FTS1 QUERY_FULLTEXT %d\n", pConstraint->iColumn)); - } else continue; - - pInfo->aConstraintUsage[i].argvIndex = 1; - pInfo->aConstraintUsage[i].omit = 1; - - /* An arbitrary value for now. - * TODO: Perhaps rowid matches should be considered cheaper than - * full-text searches. */ - pInfo->estimatedCost = 1.0; - - return SQLITE_OK; - } - } - pInfo->idxNum = QUERY_GENERIC; - return SQLITE_OK; -} - -static int fulltextDisconnect(sqlite3_vtab *pVTab){ - TRACE(("FTS1 Disconnect %p\n", pVTab)); - fulltext_vtab_destroy((fulltext_vtab *)pVTab); - return SQLITE_OK; -} - -static int fulltextDestroy(sqlite3_vtab *pVTab){ - fulltext_vtab *v = (fulltext_vtab *)pVTab; - int rc; - - TRACE(("FTS1 Destroy %p\n", pVTab)); - rc = sql_exec(v->db, v->zDb, v->zName, - "drop table if exists %_content;" - "drop table if exists %_term;" - ); - if( rc!=SQLITE_OK ) return rc; - - fulltext_vtab_destroy((fulltext_vtab *)pVTab); - return SQLITE_OK; -} - -static int fulltextOpen(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor){ - fulltext_cursor *c; - - c = (fulltext_cursor *) calloc(sizeof(fulltext_cursor), 1); - /* sqlite will initialize c->base */ - *ppCursor = &c->base; - TRACE(("FTS1 Open %p: %p\n", pVTab, c)); - - return SQLITE_OK; -} - - -/* Free all of the dynamically allocated memory held by *q -*/ -static void queryClear(Query *q){ - int i; - for(i = 0; i < q->nTerms; ++i){ - free(q->pTerms[i].pTerm); - } - free(q->pTerms); - memset(q, 0, sizeof(*q)); -} - -/* Free all of the dynamically allocated memory held by the -** Snippet -*/ -static void snippetClear(Snippet *p){ - free(p->aMatch); - free(p->zOffset); - free(p->zSnippet); - memset(p, 0, sizeof(*p)); -} -/* -** Append a single entry to the p->aMatch[] log. -*/ -static void snippetAppendMatch( - Snippet *p, /* Append the entry to this snippet */ - int iCol, int iTerm, /* The column and query term */ - int iStart, int nByte /* Offset and size of the match */ -){ - int i; - struct snippetMatch *pMatch; - if( p->nMatch+1>=p->nAlloc ){ - p->nAlloc = p->nAlloc*2 + 10; - p->aMatch = realloc(p->aMatch, p->nAlloc*sizeof(p->aMatch[0]) ); - if( p->aMatch==0 ){ - p->nMatch = 0; - p->nAlloc = 0; - return; - } - } - i = p->nMatch++; - pMatch = &p->aMatch[i]; - pMatch->iCol = iCol; - pMatch->iTerm = iTerm; - pMatch->iStart = iStart; - pMatch->nByte = nByte; -} - -/* -** Sizing information for the circular buffer used in snippetOffsetsOfColumn() -*/ -#define FTS1_ROTOR_SZ (32) -#define FTS1_ROTOR_MASK (FTS1_ROTOR_SZ-1) - -/* -** Add entries to pSnippet->aMatch[] for every match that occurs against -** document zDoc[0..nDoc-1] which is stored in column iColumn. -*/ -static void snippetOffsetsOfColumn( - Query *pQuery, - Snippet *pSnippet, - int iColumn, - const char *zDoc, - int nDoc -){ - const sqlite3_tokenizer_module *pTModule; /* The tokenizer module */ - sqlite3_tokenizer *pTokenizer; /* The specific tokenizer */ - sqlite3_tokenizer_cursor *pTCursor; /* Tokenizer cursor */ - fulltext_vtab *pVtab; /* The full text index */ - int nColumn; /* Number of columns in the index */ - const QueryTerm *aTerm; /* Query string terms */ - int nTerm; /* Number of query string terms */ - int i, j; /* Loop counters */ - int rc; /* Return code */ - unsigned int match, prevMatch; /* Phrase search bitmasks */ - const char *zToken; /* Next token from the tokenizer */ - int nToken; /* Size of zToken */ - int iBegin, iEnd, iPos; /* Offsets of beginning and end */ - - /* The following variables keep a circular buffer of the last - ** few tokens */ - unsigned int iRotor = 0; /* Index of current token */ - int iRotorBegin[FTS1_ROTOR_SZ]; /* Beginning offset of token */ - int iRotorLen[FTS1_ROTOR_SZ]; /* Length of token */ - - pVtab = pQuery->pFts; - nColumn = pVtab->nColumn; - pTokenizer = pVtab->pTokenizer; - pTModule = pTokenizer->pModule; - rc = pTModule->xOpen(pTokenizer, zDoc, nDoc, &pTCursor); - if( rc ) return; - pTCursor->pTokenizer = pTokenizer; - aTerm = pQuery->pTerms; - nTerm = pQuery->nTerms; - if( nTerm>=FTS1_ROTOR_SZ ){ - nTerm = FTS1_ROTOR_SZ - 1; - } - prevMatch = 0; - while(1){ - rc = pTModule->xNext(pTCursor, &zToken, &nToken, &iBegin, &iEnd, &iPos); - if( rc ) break; - iRotorBegin[iRotor&FTS1_ROTOR_MASK] = iBegin; - iRotorLen[iRotor&FTS1_ROTOR_MASK] = iEnd-iBegin; - match = 0; - for(i=0; i=0 && iCol1 && (prevMatch & (1<=0; j--){ - int k = (iRotor-j) & FTS1_ROTOR_MASK; - snippetAppendMatch(pSnippet, iColumn, i-j, - iRotorBegin[k], iRotorLen[k]); - } - } - } - prevMatch = match<<1; - iRotor++; - } - pTModule->xClose(pTCursor); -} - - -/* -** Compute all offsets for the current row of the query. -** If the offsets have already been computed, this routine is a no-op. -*/ -static void snippetAllOffsets(fulltext_cursor *p){ - int nColumn; - int iColumn, i; - int iFirst, iLast; - fulltext_vtab *pFts; - - if( p->snippet.nMatch ) return; - if( p->q.nTerms==0 ) return; - pFts = p->q.pFts; - nColumn = pFts->nColumn; - iColumn = p->iCursorType - QUERY_FULLTEXT; - if( iColumn<0 || iColumn>=nColumn ){ - iFirst = 0; - iLast = nColumn-1; - }else{ - iFirst = iColumn; - iLast = iColumn; - } - for(i=iFirst; i<=iLast; i++){ - const char *zDoc; - int nDoc; - zDoc = (const char*)sqlite3_column_text(p->pStmt, i+1); - nDoc = sqlite3_column_bytes(p->pStmt, i+1); - snippetOffsetsOfColumn(&p->q, &p->snippet, i, zDoc, nDoc); - } -} - -/* -** Convert the information in the aMatch[] array of the snippet -** into the string zOffset[0..nOffset-1]. -*/ -static void snippetOffsetText(Snippet *p){ - int i; - int cnt = 0; - StringBuffer sb; - char zBuf[200]; - if( p->zOffset ) return; - initStringBuffer(&sb); - for(i=0; inMatch; i++){ - struct snippetMatch *pMatch = &p->aMatch[i]; - zBuf[0] = ' '; - sqlite3_snprintf(sizeof(zBuf)-1, &zBuf[cnt>0], "%d %d %d %d", - pMatch->iCol, pMatch->iTerm, pMatch->iStart, pMatch->nByte); - append(&sb, zBuf); - cnt++; - } - p->zOffset = sb.s; - p->nOffset = sb.len; -} - -/* -** zDoc[0..nDoc-1] is phrase of text. aMatch[0..nMatch-1] are a set -** of matching words some of which might be in zDoc. zDoc is column -** number iCol. -** -** iBreak is suggested spot in zDoc where we could begin or end an -** excerpt. Return a value similar to iBreak but possibly adjusted -** to be a little left or right so that the break point is better. -*/ -static int wordBoundary( - int iBreak, /* The suggested break point */ - const char *zDoc, /* Document text */ - int nDoc, /* Number of bytes in zDoc[] */ - struct snippetMatch *aMatch, /* Matching words */ - int nMatch, /* Number of entries in aMatch[] */ - int iCol /* The column number for zDoc[] */ -){ - int i; - if( iBreak<=10 ){ - return 0; - } - if( iBreak>=nDoc-10 ){ - return nDoc; - } - for(i=0; i0 && aMatch[i-1].iStart+aMatch[i-1].nByte>=iBreak ){ - return aMatch[i-1].iStart; - } - } - for(i=1; i<=10; i++){ - if( safe_isspace(zDoc[iBreak-i]) ){ - return iBreak - i + 1; - } - if( safe_isspace(zDoc[iBreak+i]) ){ - return iBreak + i + 1; - } - } - return iBreak; -} - -/* -** If the StringBuffer does not end in white space, add a single -** space character to the end. -*/ -static void appendWhiteSpace(StringBuffer *p){ - if( p->len==0 ) return; - if( safe_isspace(p->s[p->len-1]) ) return; - append(p, " "); -} - -/* -** Remove white space from teh end of the StringBuffer -*/ -static void trimWhiteSpace(StringBuffer *p){ - while( p->len>0 && safe_isspace(p->s[p->len-1]) ){ - p->len--; - } -} - - - -/* -** Allowed values for Snippet.aMatch[].snStatus -*/ -#define SNIPPET_IGNORE 0 /* It is ok to omit this match from the snippet */ -#define SNIPPET_DESIRED 1 /* We want to include this match in the snippet */ - -/* -** Generate the text of a snippet. -*/ -static void snippetText( - fulltext_cursor *pCursor, /* The cursor we need the snippet for */ - const char *zStartMark, /* Markup to appear before each match */ - const char *zEndMark, /* Markup to appear after each match */ - const char *zEllipsis /* Ellipsis mark */ -){ - int i, j; - struct snippetMatch *aMatch; - int nMatch; - int nDesired; - StringBuffer sb; - int tailCol; - int tailOffset; - int iCol; - int nDoc; - const char *zDoc; - int iStart, iEnd; - int tailEllipsis = 0; - int iMatch; - - - free(pCursor->snippet.zSnippet); - pCursor->snippet.zSnippet = 0; - aMatch = pCursor->snippet.aMatch; - nMatch = pCursor->snippet.nMatch; - initStringBuffer(&sb); - - for(i=0; iq.nTerms; i++){ - for(j=0; j0; i++){ - if( aMatch[i].snStatus!=SNIPPET_DESIRED ) continue; - nDesired--; - iCol = aMatch[i].iCol; - zDoc = (const char*)sqlite3_column_text(pCursor->pStmt, iCol+1); - nDoc = sqlite3_column_bytes(pCursor->pStmt, iCol+1); - iStart = aMatch[i].iStart - 40; - iStart = wordBoundary(iStart, zDoc, nDoc, aMatch, nMatch, iCol); - if( iStart<=10 ){ - iStart = 0; - } - if( iCol==tailCol && iStart<=tailOffset+20 ){ - iStart = tailOffset; - } - if( (iCol!=tailCol && tailCol>=0) || iStart!=tailOffset ){ - trimWhiteSpace(&sb); - appendWhiteSpace(&sb); - append(&sb, zEllipsis); - appendWhiteSpace(&sb); - } - iEnd = aMatch[i].iStart + aMatch[i].nByte + 40; - iEnd = wordBoundary(iEnd, zDoc, nDoc, aMatch, nMatch, iCol); - if( iEnd>=nDoc-10 ){ - iEnd = nDoc; - tailEllipsis = 0; - }else{ - tailEllipsis = 1; - } - while( iMatchsnippet.zSnippet = sb.s; - pCursor->snippet.nSnippet = sb.len; -} - - -/* -** Close the cursor. For additional information see the documentation -** on the xClose method of the virtual table interface. -*/ -static int fulltextClose(sqlite3_vtab_cursor *pCursor){ - fulltext_cursor *c = (fulltext_cursor *) pCursor; - TRACE(("FTS1 Close %p\n", c)); - sqlite3_finalize(c->pStmt); - queryClear(&c->q); - snippetClear(&c->snippet); - if( c->result.pDoclist!=NULL ){ - docListDelete(c->result.pDoclist); - } - free(c); - return SQLITE_OK; -} - -static int fulltextNext(sqlite3_vtab_cursor *pCursor){ - fulltext_cursor *c = (fulltext_cursor *) pCursor; - sqlite_int64 iDocid; - int rc; - - TRACE(("FTS1 Next %p\n", pCursor)); - snippetClear(&c->snippet); - if( c->iCursorType < QUERY_FULLTEXT ){ - /* TODO(shess) Handle SQLITE_SCHEMA AND SQLITE_BUSY. */ - rc = sqlite3_step(c->pStmt); - switch( rc ){ - case SQLITE_ROW: - c->eof = 0; - return SQLITE_OK; - case SQLITE_DONE: - c->eof = 1; - return SQLITE_OK; - default: - c->eof = 1; - return rc; - } - } else { /* full-text query */ - rc = sqlite3_reset(c->pStmt); - if( rc!=SQLITE_OK ) return rc; - - iDocid = nextDocid(&c->result); - if( iDocid==0 ){ - c->eof = 1; - return SQLITE_OK; - } - rc = sqlite3_bind_int64(c->pStmt, 1, iDocid); - if( rc!=SQLITE_OK ) return rc; - /* TODO(shess) Handle SQLITE_SCHEMA AND SQLITE_BUSY. */ - rc = sqlite3_step(c->pStmt); - if( rc==SQLITE_ROW ){ /* the case we expect */ - c->eof = 0; - return SQLITE_OK; - } - /* an error occurred; abort */ - return rc==SQLITE_DONE ? SQLITE_ERROR : rc; - } -} - - -/* Return a DocList corresponding to the query term *pTerm. If *pTerm -** is the first term of a phrase query, go ahead and evaluate the phrase -** query and return the doclist for the entire phrase query. -** -** The result is stored in pTerm->doclist. -*/ -static int docListOfTerm( - fulltext_vtab *v, /* The full text index */ - int iColumn, /* column to restrict to. No restrition if >=nColumn */ - QueryTerm *pQTerm, /* Term we are looking for, or 1st term of a phrase */ - DocList **ppResult /* Write the result here */ -){ - DocList *pLeft, *pRight, *pNew; - int i, rc; - - pLeft = docListNew(DL_POSITIONS); - rc = term_select_all(v, iColumn, pQTerm->pTerm, pQTerm->nTerm, pLeft); - if( rc ){ - docListDelete(pLeft); - return rc; - } - for(i=1; i<=pQTerm->nPhrase; i++){ - pRight = docListNew(DL_POSITIONS); - rc = term_select_all(v, iColumn, pQTerm[i].pTerm, pQTerm[i].nTerm, pRight); - if( rc ){ - docListDelete(pLeft); - return rc; - } - pNew = docListNew(inPhrase ? DL_POSITIONS : DL_DOCIDS); - docListPhraseMerge(pLeft, pRight, pNew); - docListDelete(pLeft); - docListDelete(pRight); - pLeft = pNew; - } - *ppResult = pLeft; - return SQLITE_OK; -} - -/* Add a new term pTerm[0..nTerm-1] to the query *q. -*/ -static void queryAdd(Query *q, const char *pTerm, int nTerm){ - QueryTerm *t; - ++q->nTerms; - q->pTerms = realloc(q->pTerms, q->nTerms * sizeof(q->pTerms[0])); - if( q->pTerms==0 ){ - q->nTerms = 0; - return; - } - t = &q->pTerms[q->nTerms - 1]; - memset(t, 0, sizeof(*t)); - t->pTerm = malloc(nTerm+1); - memcpy(t->pTerm, pTerm, nTerm); - t->pTerm[nTerm] = 0; - t->nTerm = nTerm; - t->isOr = q->nextIsOr; - q->nextIsOr = 0; - t->iColumn = q->nextColumn; - q->nextColumn = q->dfltColumn; -} - -/* -** Check to see if the string zToken[0...nToken-1] matches any -** column name in the virtual table. If it does, -** return the zero-indexed column number. If not, return -1. -*/ -static int checkColumnSpecifier( - fulltext_vtab *pVtab, /* The virtual table */ - const char *zToken, /* Text of the token */ - int nToken /* Number of characters in the token */ -){ - int i; - for(i=0; inColumn; i++){ - if( memcmp(pVtab->azColumn[i], zToken, nToken)==0 - && pVtab->azColumn[i][nToken]==0 ){ - return i; - } - } - return -1; -} - -/* -** Parse the text at pSegment[0..nSegment-1]. Add additional terms -** to the query being assemblied in pQuery. -** -** inPhrase is true if pSegment[0..nSegement-1] is contained within -** double-quotes. If inPhrase is true, then the first term -** is marked with the number of terms in the phrase less one and -** OR and "-" syntax is ignored. If inPhrase is false, then every -** term found is marked with nPhrase=0 and OR and "-" syntax is significant. -*/ -static int tokenizeSegment( - sqlite3_tokenizer *pTokenizer, /* The tokenizer to use */ - const char *pSegment, int nSegment, /* Query expression being parsed */ - int inPhrase, /* True if within "..." */ - Query *pQuery /* Append results here */ -){ - const sqlite3_tokenizer_module *pModule = pTokenizer->pModule; - sqlite3_tokenizer_cursor *pCursor; - int firstIndex = pQuery->nTerms; - int iCol; - int nTerm = 1; - - int rc = pModule->xOpen(pTokenizer, pSegment, nSegment, &pCursor); - if( rc!=SQLITE_OK ) return rc; - pCursor->pTokenizer = pTokenizer; - - while( 1 ){ - const char *pToken; - int nToken, iBegin, iEnd, iPos; - - rc = pModule->xNext(pCursor, - &pToken, &nToken, - &iBegin, &iEnd, &iPos); - if( rc!=SQLITE_OK ) break; - if( !inPhrase && - pSegment[iEnd]==':' && - (iCol = checkColumnSpecifier(pQuery->pFts, pToken, nToken))>=0 ){ - pQuery->nextColumn = iCol; - continue; - } - if( !inPhrase && pQuery->nTerms>0 && nToken==2 - && pSegment[iBegin]=='O' && pSegment[iBegin+1]=='R' ){ - pQuery->nextIsOr = 1; - continue; - } - queryAdd(pQuery, pToken, nToken); - if( !inPhrase && iBegin>0 && pSegment[iBegin-1]=='-' ){ - pQuery->pTerms[pQuery->nTerms-1].isNot = 1; - } - pQuery->pTerms[pQuery->nTerms-1].iPhrase = nTerm; - if( inPhrase ){ - nTerm++; - } - } - - if( inPhrase && pQuery->nTerms>firstIndex ){ - pQuery->pTerms[firstIndex].nPhrase = pQuery->nTerms - firstIndex - 1; - } - - return pModule->xClose(pCursor); -} - -/* Parse a query string, yielding a Query object pQuery. -** -** The calling function will need to queryClear() to clean up -** the dynamically allocated memory held by pQuery. -*/ -static int parseQuery( - fulltext_vtab *v, /* The fulltext index */ - const char *zInput, /* Input text of the query string */ - int nInput, /* Size of the input text */ - int dfltColumn, /* Default column of the index to match against */ - Query *pQuery /* Write the parse results here. */ -){ - int iInput, inPhrase = 0; - - if( zInput==0 ) nInput = 0; - if( nInput<0 ) nInput = strlen(zInput); - pQuery->nTerms = 0; - pQuery->pTerms = NULL; - pQuery->nextIsOr = 0; - pQuery->nextColumn = dfltColumn; - pQuery->dfltColumn = dfltColumn; - pQuery->pFts = v; - - for(iInput=0; iInputiInput ){ - tokenizeSegment(v->pTokenizer, zInput+iInput, i-iInput, inPhrase, - pQuery); - } - iInput = i; - if( i=nColumn -** they are allowed to match against any column. -*/ -static int fulltextQuery( - fulltext_vtab *v, /* The full text index */ - int iColumn, /* Match against this column by default */ - const char *zInput, /* The query string */ - int nInput, /* Number of bytes in zInput[] */ - DocList **pResult, /* Write the result doclist here */ - Query *pQuery /* Put parsed query string here */ -){ - int i, iNext, rc; - DocList *pLeft = NULL; - DocList *pRight, *pNew, *pOr; - int nNot = 0; - QueryTerm *aTerm; - - rc = parseQuery(v, zInput, nInput, iColumn, pQuery); - if( rc!=SQLITE_OK ) return rc; - - /* Merge AND terms. */ - aTerm = pQuery->pTerms; - for(i = 0; inTerms; i=iNext){ - if( aTerm[i].isNot ){ - /* Handle all NOT terms in a separate pass */ - nNot++; - iNext = i + aTerm[i].nPhrase+1; - continue; - } - iNext = i + aTerm[i].nPhrase + 1; - rc = docListOfTerm(v, aTerm[i].iColumn, &aTerm[i], &pRight); - if( rc ){ - queryClear(pQuery); - return rc; - } - while( iNextnTerms && aTerm[iNext].isOr ){ - rc = docListOfTerm(v, aTerm[iNext].iColumn, &aTerm[iNext], &pOr); - iNext += aTerm[iNext].nPhrase + 1; - if( rc ){ - queryClear(pQuery); - return rc; - } - pNew = docListNew(DL_DOCIDS); - docListOrMerge(pRight, pOr, pNew); - docListDelete(pRight); - docListDelete(pOr); - pRight = pNew; - } - if( pLeft==0 ){ - pLeft = pRight; - }else{ - pNew = docListNew(DL_DOCIDS); - docListAndMerge(pLeft, pRight, pNew); - docListDelete(pRight); - docListDelete(pLeft); - pLeft = pNew; - } - } - - if( nNot && pLeft==0 ){ - /* We do not yet know how to handle a query of only NOT terms */ - return SQLITE_ERROR; - } - - /* Do the EXCEPT terms */ - for(i=0; inTerms; i += aTerm[i].nPhrase + 1){ - if( !aTerm[i].isNot ) continue; - rc = docListOfTerm(v, aTerm[i].iColumn, &aTerm[i], &pRight); - if( rc ){ - queryClear(pQuery); - docListDelete(pLeft); - return rc; - } - pNew = docListNew(DL_DOCIDS); - docListExceptMerge(pLeft, pRight, pNew); - docListDelete(pRight); - docListDelete(pLeft); - pLeft = pNew; - } - - *pResult = pLeft; - return rc; -} - -/* -** This is the xFilter interface for the virtual table. See -** the virtual table xFilter method documentation for additional -** information. -** -** If idxNum==QUERY_GENERIC then do a full table scan against -** the %_content table. -** -** If idxNum==QUERY_ROWID then do a rowid lookup for a single entry -** in the %_content table. -** -** If idxNum>=QUERY_FULLTEXT then use the full text index. The -** column on the left-hand side of the MATCH operator is column -** number idxNum-QUERY_FULLTEXT, 0 indexed. argv[0] is the right-hand -** side of the MATCH operator. -*/ -/* TODO(shess) Upgrade the cursor initialization and destruction to -** account for fulltextFilter() being called multiple times on the -** same cursor. The current solution is very fragile. Apply fix to -** fts2 as appropriate. -*/ -static int fulltextFilter( - sqlite3_vtab_cursor *pCursor, /* The cursor used for this query */ - int idxNum, const char *idxStr, /* Which indexing scheme to use */ - int argc, sqlite3_value **argv /* Arguments for the indexing scheme */ -){ - fulltext_cursor *c = (fulltext_cursor *) pCursor; - fulltext_vtab *v = cursor_vtab(c); - int rc; - char *zSql; - - TRACE(("FTS1 Filter %p\n",pCursor)); - - zSql = sqlite3_mprintf("select rowid, * from %%_content %s", - idxNum==QUERY_GENERIC ? "" : "where rowid=?"); - sqlite3_finalize(c->pStmt); - rc = sql_prepare(v->db, v->zDb, v->zName, &c->pStmt, zSql); - sqlite3_free(zSql); - if( rc!=SQLITE_OK ) return rc; - - c->iCursorType = idxNum; - switch( idxNum ){ - case QUERY_GENERIC: - break; - - case QUERY_ROWID: - rc = sqlite3_bind_int64(c->pStmt, 1, sqlite3_value_int64(argv[0])); - if( rc!=SQLITE_OK ) return rc; - break; - - default: /* full-text search */ - { - const char *zQuery = (const char *)sqlite3_value_text(argv[0]); - DocList *pResult; - assert( idxNum<=QUERY_FULLTEXT+v->nColumn); - assert( argc==1 ); - queryClear(&c->q); - rc = fulltextQuery(v, idxNum-QUERY_FULLTEXT, zQuery, -1, &pResult, &c->q); - if( rc!=SQLITE_OK ) return rc; - if( c->result.pDoclist!=NULL ) docListDelete(c->result.pDoclist); - readerInit(&c->result, pResult); - break; - } - } - - return fulltextNext(pCursor); -} - -/* This is the xEof method of the virtual table. The SQLite core -** calls this routine to find out if it has reached the end of -** a query's results set. -*/ -static int fulltextEof(sqlite3_vtab_cursor *pCursor){ - fulltext_cursor *c = (fulltext_cursor *) pCursor; - return c->eof; -} - -/* This is the xColumn method of the virtual table. The SQLite -** core calls this method during a query when it needs the value -** of a column from the virtual table. This method needs to use -** one of the sqlite3_result_*() routines to store the requested -** value back in the pContext. -*/ -static int fulltextColumn(sqlite3_vtab_cursor *pCursor, - sqlite3_context *pContext, int idxCol){ - fulltext_cursor *c = (fulltext_cursor *) pCursor; - fulltext_vtab *v = cursor_vtab(c); - - if( idxColnColumn ){ - sqlite3_value *pVal = sqlite3_column_value(c->pStmt, idxCol+1); - sqlite3_result_value(pContext, pVal); - }else if( idxCol==v->nColumn ){ - /* The extra column whose name is the same as the table. - ** Return a blob which is a pointer to the cursor - */ - sqlite3_result_blob(pContext, &c, sizeof(c), SQLITE_TRANSIENT); - } - return SQLITE_OK; -} - -/* This is the xRowid method. The SQLite core calls this routine to -** retrive the rowid for the current row of the result set. The -** rowid should be written to *pRowid. -*/ -static int fulltextRowid(sqlite3_vtab_cursor *pCursor, sqlite_int64 *pRowid){ - fulltext_cursor *c = (fulltext_cursor *) pCursor; - - *pRowid = sqlite3_column_int64(c->pStmt, 0); - return SQLITE_OK; -} - -/* Add all terms in [zText] to the given hash table. If [iColumn] > 0, - * we also store positions and offsets in the hash table using the given - * column number. */ -static int buildTerms(fulltext_vtab *v, fts1Hash *terms, sqlite_int64 iDocid, - const char *zText, int iColumn){ - sqlite3_tokenizer *pTokenizer = v->pTokenizer; - sqlite3_tokenizer_cursor *pCursor; - const char *pToken; - int nTokenBytes; - int iStartOffset, iEndOffset, iPosition; - int rc; - - rc = pTokenizer->pModule->xOpen(pTokenizer, zText, -1, &pCursor); - if( rc!=SQLITE_OK ) return rc; - - pCursor->pTokenizer = pTokenizer; - while( SQLITE_OK==pTokenizer->pModule->xNext(pCursor, - &pToken, &nTokenBytes, - &iStartOffset, &iEndOffset, - &iPosition) ){ - DocList *p; - - /* Positions can't be negative; we use -1 as a terminator internally. */ - if( iPosition<0 ){ - pTokenizer->pModule->xClose(pCursor); - return SQLITE_ERROR; - } - - p = fts1HashFind(terms, pToken, nTokenBytes); - if( p==NULL ){ - p = docListNew(DL_DEFAULT); - docListAddDocid(p, iDocid); - fts1HashInsert(terms, pToken, nTokenBytes, p); - } - if( iColumn>=0 ){ - docListAddPosOffset(p, iColumn, iPosition, iStartOffset, iEndOffset); - } - } - - /* TODO(shess) Check return? Should this be able to cause errors at - ** this point? Actually, same question about sqlite3_finalize(), - ** though one could argue that failure there means that the data is - ** not durable. *ponder* - */ - pTokenizer->pModule->xClose(pCursor); - return rc; -} - -/* Update the %_terms table to map the term [pTerm] to the given rowid. */ -static int index_insert_term(fulltext_vtab *v, const char *pTerm, int nTerm, - DocList *d){ - sqlite_int64 iIndexRow; - DocList doclist; - int iSegment = 0, rc; - - rc = term_select(v, pTerm, nTerm, iSegment, &iIndexRow, &doclist); - if( rc==SQLITE_DONE ){ - docListInit(&doclist, DL_DEFAULT, 0, 0); - docListUpdate(&doclist, d); - /* TODO(shess) Consider length(doclist)>CHUNK_MAX? */ - rc = term_insert(v, NULL, pTerm, nTerm, iSegment, &doclist); - goto err; - } - if( rc!=SQLITE_ROW ) return SQLITE_ERROR; - - docListUpdate(&doclist, d); - if( doclist.nData<=CHUNK_MAX ){ - rc = term_update(v, iIndexRow, &doclist); - goto err; - } - - /* Doclist doesn't fit, delete what's there, and accumulate - ** forward. - */ - rc = term_delete(v, iIndexRow); - if( rc!=SQLITE_OK ) goto err; - - /* Try to insert the doclist into a higher segment bucket. On - ** failure, accumulate existing doclist with the doclist from that - ** bucket, and put results in the next bucket. - */ - iSegment++; - while( (rc=term_insert(v, &iIndexRow, pTerm, nTerm, iSegment, - &doclist))!=SQLITE_OK ){ - sqlite_int64 iSegmentRow; - DocList old; - int rc2; - - /* Retain old error in case the term_insert() error was really an - ** error rather than a bounced insert. - */ - rc2 = term_select(v, pTerm, nTerm, iSegment, &iSegmentRow, &old); - if( rc2!=SQLITE_ROW ) goto err; - - rc = term_delete(v, iSegmentRow); - if( rc!=SQLITE_OK ) goto err; - - /* Reusing lowest-number deleted row keeps the index smaller. */ - if( iSegmentRownColumn ; ++i){ - char *zText = (char*)sqlite3_value_text(pValues[i]); - int rc = buildTerms(v, terms, iRowid, zText, i); - if( rc!=SQLITE_OK ) return rc; - } - return SQLITE_OK; -} - -/* Add empty doclists for all terms in the given row's content to the hash - * table [pTerms]. */ -static int deleteTerms(fulltext_vtab *v, fts1Hash *pTerms, sqlite_int64 iRowid){ - const char **pValues; - int i; - - int rc = content_select(v, iRowid, &pValues); - if( rc!=SQLITE_OK ) return rc; - - for(i = 0 ; i < v->nColumn; ++i) { - rc = buildTerms(v, pTerms, iRowid, pValues[i], -1); - if( rc!=SQLITE_OK ) break; - } - - freeStringArray(v->nColumn, pValues); - return SQLITE_OK; -} - -/* Insert a row into the %_content table; set *piRowid to be the ID of the - * new row. Fill [pTerms] with new doclists for the %_term table. */ -static int index_insert(fulltext_vtab *v, sqlite3_value *pRequestRowid, - sqlite3_value **pValues, - sqlite_int64 *piRowid, fts1Hash *pTerms){ - int rc; - - rc = content_insert(v, pRequestRowid, pValues); /* execute an SQL INSERT */ - if( rc!=SQLITE_OK ) return rc; - *piRowid = sqlite3_last_insert_rowid(v->db); - return insertTerms(v, pTerms, *piRowid, pValues); -} - -/* Delete a row from the %_content table; fill [pTerms] with empty doclists - * to be written to the %_term table. */ -static int index_delete(fulltext_vtab *v, sqlite_int64 iRow, fts1Hash *pTerms){ - int rc = deleteTerms(v, pTerms, iRow); - if( rc!=SQLITE_OK ) return rc; - return content_delete(v, iRow); /* execute an SQL DELETE */ -} - -/* Update a row in the %_content table; fill [pTerms] with new doclists for the - * %_term table. */ -static int index_update(fulltext_vtab *v, sqlite_int64 iRow, - sqlite3_value **pValues, fts1Hash *pTerms){ - /* Generate an empty doclist for each term that previously appeared in this - * row. */ - int rc = deleteTerms(v, pTerms, iRow); - if( rc!=SQLITE_OK ) return rc; - - rc = content_update(v, pValues, iRow); /* execute an SQL UPDATE */ - if( rc!=SQLITE_OK ) return rc; - - /* Now add positions for terms which appear in the updated row. */ - return insertTerms(v, pTerms, iRow, pValues); -} - -/* This function implements the xUpdate callback; it is the top-level entry - * point for inserting, deleting or updating a row in a full-text table. */ -static int fulltextUpdate(sqlite3_vtab *pVtab, int nArg, sqlite3_value **ppArg, - sqlite_int64 *pRowid){ - fulltext_vtab *v = (fulltext_vtab *) pVtab; - fts1Hash terms; /* maps term string -> PosList */ - int rc; - fts1HashElem *e; - - TRACE(("FTS1 Update %p\n", pVtab)); - - fts1HashInit(&terms, FTS1_HASH_STRING, 1); - - if( nArg<2 ){ - rc = index_delete(v, sqlite3_value_int64(ppArg[0]), &terms); - } else if( sqlite3_value_type(ppArg[0]) != SQLITE_NULL ){ - /* An update: - * ppArg[0] = old rowid - * ppArg[1] = new rowid - * ppArg[2..2+v->nColumn-1] = values - * ppArg[2+v->nColumn] = value for magic column (we ignore this) - */ - sqlite_int64 rowid = sqlite3_value_int64(ppArg[0]); - if( sqlite3_value_type(ppArg[1]) != SQLITE_INTEGER || - sqlite3_value_int64(ppArg[1]) != rowid ){ - rc = SQLITE_ERROR; /* we don't allow changing the rowid */ - } else { - assert( nArg==2+v->nColumn+1); - rc = index_update(v, rowid, &ppArg[2], &terms); - } - } else { - /* An insert: - * ppArg[1] = requested rowid - * ppArg[2..2+v->nColumn-1] = values - * ppArg[2+v->nColumn] = value for magic column (we ignore this) - */ - assert( nArg==2+v->nColumn+1); - rc = index_insert(v, ppArg[1], &ppArg[2], pRowid, &terms); - } - - if( rc==SQLITE_OK ){ - /* Write updated doclists to disk. */ - for(e=fts1HashFirst(&terms); e; e=fts1HashNext(e)){ - DocList *p = fts1HashData(e); - rc = index_insert_term(v, fts1HashKey(e), fts1HashKeysize(e), p); - if( rc!=SQLITE_OK ) break; - } - } - - /* clean up */ - for(e=fts1HashFirst(&terms); e; e=fts1HashNext(e)){ - DocList *p = fts1HashData(e); - docListDelete(p); - } - fts1HashClear(&terms); - - return rc; -} - -/* -** Implementation of the snippet() function for FTS1 -*/ -static void snippetFunc( - sqlite3_context *pContext, - int argc, - sqlite3_value **argv -){ - fulltext_cursor *pCursor; - if( argc<1 ) return; - if( sqlite3_value_type(argv[0])!=SQLITE_BLOB || - sqlite3_value_bytes(argv[0])!=sizeof(pCursor) ){ - sqlite3_result_error(pContext, "illegal first argument to html_snippet",-1); - }else{ - const char *zStart = ""; - const char *zEnd = ""; - const char *zEllipsis = "..."; - memcpy(&pCursor, sqlite3_value_blob(argv[0]), sizeof(pCursor)); - if( argc>=2 ){ - zStart = (const char*)sqlite3_value_text(argv[1]); - if( argc>=3 ){ - zEnd = (const char*)sqlite3_value_text(argv[2]); - if( argc>=4 ){ - zEllipsis = (const char*)sqlite3_value_text(argv[3]); - } - } - } - snippetAllOffsets(pCursor); - snippetText(pCursor, zStart, zEnd, zEllipsis); - sqlite3_result_text(pContext, pCursor->snippet.zSnippet, - pCursor->snippet.nSnippet, SQLITE_STATIC); - } -} - -/* -** Implementation of the offsets() function for FTS1 -*/ -static void snippetOffsetsFunc( - sqlite3_context *pContext, - int argc, - sqlite3_value **argv -){ - fulltext_cursor *pCursor; - if( argc<1 ) return; - if( sqlite3_value_type(argv[0])!=SQLITE_BLOB || - sqlite3_value_bytes(argv[0])!=sizeof(pCursor) ){ - sqlite3_result_error(pContext, "illegal first argument to offsets",-1); - }else{ - memcpy(&pCursor, sqlite3_value_blob(argv[0]), sizeof(pCursor)); - snippetAllOffsets(pCursor); - snippetOffsetText(&pCursor->snippet); - sqlite3_result_text(pContext, - pCursor->snippet.zOffset, pCursor->snippet.nOffset, - SQLITE_STATIC); - } -} - -/* -** This routine implements the xFindFunction method for the FTS1 -** virtual table. -*/ -static int fulltextFindFunction( - sqlite3_vtab *pVtab, - int nArg, - const char *zName, - void (**pxFunc)(sqlite3_context*,int,sqlite3_value**), - void **ppArg -){ - if( strcmp(zName,"snippet")==0 ){ - *pxFunc = snippetFunc; - return 1; - }else if( strcmp(zName,"offsets")==0 ){ - *pxFunc = snippetOffsetsFunc; - return 1; - } - return 0; -} - -/* -** Rename an fts1 table. -*/ -static int fulltextRename( - sqlite3_vtab *pVtab, - const char *zName -){ - fulltext_vtab *p = (fulltext_vtab *)pVtab; - int rc = SQLITE_NOMEM; - char *zSql = sqlite3_mprintf( - "ALTER TABLE %Q.'%q_content' RENAME TO '%q_content';" - "ALTER TABLE %Q.'%q_term' RENAME TO '%q_term';" - , p->zDb, p->zName, zName - , p->zDb, p->zName, zName - ); - if( zSql ){ - rc = sqlite3_exec(p->db, zSql, 0, 0, 0); - sqlite3_free(zSql); - } - return rc; -} - -static const sqlite3_module fulltextModule = { - /* iVersion */ 0, - /* xCreate */ fulltextCreate, - /* xConnect */ fulltextConnect, - /* xBestIndex */ fulltextBestIndex, - /* xDisconnect */ fulltextDisconnect, - /* xDestroy */ fulltextDestroy, - /* xOpen */ fulltextOpen, - /* xClose */ fulltextClose, - /* xFilter */ fulltextFilter, - /* xNext */ fulltextNext, - /* xEof */ fulltextEof, - /* xColumn */ fulltextColumn, - /* xRowid */ fulltextRowid, - /* xUpdate */ fulltextUpdate, - /* xBegin */ 0, - /* xSync */ 0, - /* xCommit */ 0, - /* xRollback */ 0, - /* xFindFunction */ fulltextFindFunction, - /* xRename */ fulltextRename, -}; - -int sqlite3Fts1Init(sqlite3 *db){ - sqlite3_overload_function(db, "snippet", -1); - sqlite3_overload_function(db, "offsets", -1); - return sqlite3_create_module(db, "fts1", &fulltextModule, 0); -} - -#if !SQLITE_CORE -int sqlite3_extension_init(sqlite3 *db, char **pzErrMsg, - const sqlite3_api_routines *pApi){ - SQLITE_EXTENSION_INIT2(pApi) - return sqlite3Fts1Init(db); -} -#endif - -#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS1) */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/fts1.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/fts1.h deleted file mode 100644 index f635c25e22..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/fts1.h +++ /dev/null @@ -1,11 +0,0 @@ -#include "sqlite3.h" - -#ifdef __cplusplus -extern "C" { -#endif /* __cplusplus */ - -int sqlite3Fts1Init(sqlite3 *db); - -#ifdef __cplusplus -} /* extern "C" */ -#endif /* __cplusplus */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/fts1_hash.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/fts1_hash.c deleted file mode 100644 index 79aa1b8f8c..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/fts1_hash.c +++ /dev/null @@ -1,369 +0,0 @@ -/* -** 2001 September 22 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This is the implementation of generic hash-tables used in SQLite. -** We've modified it slightly to serve as a standalone hash table -** implementation for the full-text indexing module. -*/ -#include -#include -#include - -/* -** The code in this file is only compiled if: -** -** * The FTS1 module is being built as an extension -** (in which case SQLITE_CORE is not defined), or -** -** * The FTS1 module is being built into the core of -** SQLite (in which case SQLITE_ENABLE_FTS1 is defined). -*/ -#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS1) - - -#include "fts1_hash.h" - -static void *malloc_and_zero(int n){ - void *p = malloc(n); - if( p ){ - memset(p, 0, n); - } - return p; -} - -/* Turn bulk memory into a hash table object by initializing the -** fields of the Hash structure. -** -** "pNew" is a pointer to the hash table that is to be initialized. -** keyClass is one of the constants -** FTS1_HASH_BINARY or FTS1_HASH_STRING. The value of keyClass -** determines what kind of key the hash table will use. "copyKey" is -** true if the hash table should make its own private copy of keys and -** false if it should just use the supplied pointer. -*/ -void sqlite3Fts1HashInit(fts1Hash *pNew, int keyClass, int copyKey){ - assert( pNew!=0 ); - assert( keyClass>=FTS1_HASH_STRING && keyClass<=FTS1_HASH_BINARY ); - pNew->keyClass = keyClass; - pNew->copyKey = copyKey; - pNew->first = 0; - pNew->count = 0; - pNew->htsize = 0; - pNew->ht = 0; - pNew->xMalloc = malloc_and_zero; - pNew->xFree = free; -} - -/* Remove all entries from a hash table. Reclaim all memory. -** Call this routine to delete a hash table or to reset a hash table -** to the empty state. -*/ -void sqlite3Fts1HashClear(fts1Hash *pH){ - fts1HashElem *elem; /* For looping over all elements of the table */ - - assert( pH!=0 ); - elem = pH->first; - pH->first = 0; - if( pH->ht ) pH->xFree(pH->ht); - pH->ht = 0; - pH->htsize = 0; - while( elem ){ - fts1HashElem *next_elem = elem->next; - if( pH->copyKey && elem->pKey ){ - pH->xFree(elem->pKey); - } - pH->xFree(elem); - elem = next_elem; - } - pH->count = 0; -} - -/* -** Hash and comparison functions when the mode is FTS1_HASH_STRING -*/ -static int strHash(const void *pKey, int nKey){ - const char *z = (const char *)pKey; - int h = 0; - if( nKey<=0 ) nKey = (int) strlen(z); - while( nKey > 0 ){ - h = (h<<3) ^ h ^ *z++; - nKey--; - } - return h & 0x7fffffff; -} -static int strCompare(const void *pKey1, int n1, const void *pKey2, int n2){ - if( n1!=n2 ) return 1; - return strncmp((const char*)pKey1,(const char*)pKey2,n1); -} - -/* -** Hash and comparison functions when the mode is FTS1_HASH_BINARY -*/ -static int binHash(const void *pKey, int nKey){ - int h = 0; - const char *z = (const char *)pKey; - while( nKey-- > 0 ){ - h = (h<<3) ^ h ^ *(z++); - } - return h & 0x7fffffff; -} -static int binCompare(const void *pKey1, int n1, const void *pKey2, int n2){ - if( n1!=n2 ) return 1; - return memcmp(pKey1,pKey2,n1); -} - -/* -** Return a pointer to the appropriate hash function given the key class. -** -** The C syntax in this function definition may be unfamilar to some -** programmers, so we provide the following additional explanation: -** -** The name of the function is "hashFunction". The function takes a -** single parameter "keyClass". The return value of hashFunction() -** is a pointer to another function. Specifically, the return value -** of hashFunction() is a pointer to a function that takes two parameters -** with types "const void*" and "int" and returns an "int". -*/ -static int (*hashFunction(int keyClass))(const void*,int){ - if( keyClass==FTS1_HASH_STRING ){ - return &strHash; - }else{ - assert( keyClass==FTS1_HASH_BINARY ); - return &binHash; - } -} - -/* -** Return a pointer to the appropriate hash function given the key class. -** -** For help in interpreted the obscure C code in the function definition, -** see the header comment on the previous function. -*/ -static int (*compareFunction(int keyClass))(const void*,int,const void*,int){ - if( keyClass==FTS1_HASH_STRING ){ - return &strCompare; - }else{ - assert( keyClass==FTS1_HASH_BINARY ); - return &binCompare; - } -} - -/* Link an element into the hash table -*/ -static void insertElement( - fts1Hash *pH, /* The complete hash table */ - struct _fts1ht *pEntry, /* The entry into which pNew is inserted */ - fts1HashElem *pNew /* The element to be inserted */ -){ - fts1HashElem *pHead; /* First element already in pEntry */ - pHead = pEntry->chain; - if( pHead ){ - pNew->next = pHead; - pNew->prev = pHead->prev; - if( pHead->prev ){ pHead->prev->next = pNew; } - else { pH->first = pNew; } - pHead->prev = pNew; - }else{ - pNew->next = pH->first; - if( pH->first ){ pH->first->prev = pNew; } - pNew->prev = 0; - pH->first = pNew; - } - pEntry->count++; - pEntry->chain = pNew; -} - - -/* Resize the hash table so that it cantains "new_size" buckets. -** "new_size" must be a power of 2. The hash table might fail -** to resize if sqliteMalloc() fails. -*/ -static void rehash(fts1Hash *pH, int new_size){ - struct _fts1ht *new_ht; /* The new hash table */ - fts1HashElem *elem, *next_elem; /* For looping over existing elements */ - int (*xHash)(const void*,int); /* The hash function */ - - assert( (new_size & (new_size-1))==0 ); - new_ht = (struct _fts1ht *)pH->xMalloc( new_size*sizeof(struct _fts1ht) ); - if( new_ht==0 ) return; - if( pH->ht ) pH->xFree(pH->ht); - pH->ht = new_ht; - pH->htsize = new_size; - xHash = hashFunction(pH->keyClass); - for(elem=pH->first, pH->first=0; elem; elem = next_elem){ - int h = (*xHash)(elem->pKey, elem->nKey) & (new_size-1); - next_elem = elem->next; - insertElement(pH, &new_ht[h], elem); - } -} - -/* This function (for internal use only) locates an element in an -** hash table that matches the given key. The hash for this key has -** already been computed and is passed as the 4th parameter. -*/ -static fts1HashElem *findElementGivenHash( - const fts1Hash *pH, /* The pH to be searched */ - const void *pKey, /* The key we are searching for */ - int nKey, - int h /* The hash for this key. */ -){ - fts1HashElem *elem; /* Used to loop thru the element list */ - int count; /* Number of elements left to test */ - int (*xCompare)(const void*,int,const void*,int); /* comparison function */ - - if( pH->ht ){ - struct _fts1ht *pEntry = &pH->ht[h]; - elem = pEntry->chain; - count = pEntry->count; - xCompare = compareFunction(pH->keyClass); - while( count-- && elem ){ - if( (*xCompare)(elem->pKey,elem->nKey,pKey,nKey)==0 ){ - return elem; - } - elem = elem->next; - } - } - return 0; -} - -/* Remove a single entry from the hash table given a pointer to that -** element and a hash on the element's key. -*/ -static void removeElementGivenHash( - fts1Hash *pH, /* The pH containing "elem" */ - fts1HashElem* elem, /* The element to be removed from the pH */ - int h /* Hash value for the element */ -){ - struct _fts1ht *pEntry; - if( elem->prev ){ - elem->prev->next = elem->next; - }else{ - pH->first = elem->next; - } - if( elem->next ){ - elem->next->prev = elem->prev; - } - pEntry = &pH->ht[h]; - if( pEntry->chain==elem ){ - pEntry->chain = elem->next; - } - pEntry->count--; - if( pEntry->count<=0 ){ - pEntry->chain = 0; - } - if( pH->copyKey && elem->pKey ){ - pH->xFree(elem->pKey); - } - pH->xFree( elem ); - pH->count--; - if( pH->count<=0 ){ - assert( pH->first==0 ); - assert( pH->count==0 ); - fts1HashClear(pH); - } -} - -/* Attempt to locate an element of the hash table pH with a key -** that matches pKey,nKey. Return the data for this element if it is -** found, or NULL if there is no match. -*/ -void *sqlite3Fts1HashFind(const fts1Hash *pH, const void *pKey, int nKey){ - int h; /* A hash on key */ - fts1HashElem *elem; /* The element that matches key */ - int (*xHash)(const void*,int); /* The hash function */ - - if( pH==0 || pH->ht==0 ) return 0; - xHash = hashFunction(pH->keyClass); - assert( xHash!=0 ); - h = (*xHash)(pKey,nKey); - assert( (pH->htsize & (pH->htsize-1))==0 ); - elem = findElementGivenHash(pH,pKey,nKey, h & (pH->htsize-1)); - return elem ? elem->data : 0; -} - -/* Insert an element into the hash table pH. The key is pKey,nKey -** and the data is "data". -** -** If no element exists with a matching key, then a new -** element is created. A copy of the key is made if the copyKey -** flag is set. NULL is returned. -** -** If another element already exists with the same key, then the -** new data replaces the old data and the old data is returned. -** The key is not copied in this instance. If a malloc fails, then -** the new data is returned and the hash table is unchanged. -** -** If the "data" parameter to this function is NULL, then the -** element corresponding to "key" is removed from the hash table. -*/ -void *sqlite3Fts1HashInsert( - fts1Hash *pH, /* The hash table to insert into */ - const void *pKey, /* The key */ - int nKey, /* Number of bytes in the key */ - void *data /* The data */ -){ - int hraw; /* Raw hash value of the key */ - int h; /* the hash of the key modulo hash table size */ - fts1HashElem *elem; /* Used to loop thru the element list */ - fts1HashElem *new_elem; /* New element added to the pH */ - int (*xHash)(const void*,int); /* The hash function */ - - assert( pH!=0 ); - xHash = hashFunction(pH->keyClass); - assert( xHash!=0 ); - hraw = (*xHash)(pKey, nKey); - assert( (pH->htsize & (pH->htsize-1))==0 ); - h = hraw & (pH->htsize-1); - elem = findElementGivenHash(pH,pKey,nKey,h); - if( elem ){ - void *old_data = elem->data; - if( data==0 ){ - removeElementGivenHash(pH,elem,h); - }else{ - elem->data = data; - } - return old_data; - } - if( data==0 ) return 0; - new_elem = (fts1HashElem*)pH->xMalloc( sizeof(fts1HashElem) ); - if( new_elem==0 ) return data; - if( pH->copyKey && pKey!=0 ){ - new_elem->pKey = pH->xMalloc( nKey ); - if( new_elem->pKey==0 ){ - pH->xFree(new_elem); - return data; - } - memcpy((void*)new_elem->pKey, pKey, nKey); - }else{ - new_elem->pKey = (void*)pKey; - } - new_elem->nKey = nKey; - pH->count++; - if( pH->htsize==0 ){ - rehash(pH,8); - if( pH->htsize==0 ){ - pH->count = 0; - pH->xFree(new_elem); - return data; - } - } - if( pH->count > pH->htsize ){ - rehash(pH,pH->htsize*2); - } - assert( pH->htsize>0 ); - assert( (pH->htsize & (pH->htsize-1))==0 ); - h = hraw & (pH->htsize-1); - insertElement(pH, &pH->ht[h], new_elem); - new_elem->data = data; - return 0; -} - -#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS1) */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/fts1_hash.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/fts1_hash.h deleted file mode 100644 index e83edfff4c..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/fts1_hash.h +++ /dev/null @@ -1,112 +0,0 @@ -/* -** 2001 September 22 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This is the header file for the generic hash-table implemenation -** used in SQLite. We've modified it slightly to serve as a standalone -** hash table implementation for the full-text indexing module. -** -*/ -#ifndef _FTS1_HASH_H_ -#define _FTS1_HASH_H_ - -/* Forward declarations of structures. */ -typedef struct fts1Hash fts1Hash; -typedef struct fts1HashElem fts1HashElem; - -/* A complete hash table is an instance of the following structure. -** The internals of this structure are intended to be opaque -- client -** code should not attempt to access or modify the fields of this structure -** directly. Change this structure only by using the routines below. -** However, many of the "procedures" and "functions" for modifying and -** accessing this structure are really macros, so we can't really make -** this structure opaque. -*/ -struct fts1Hash { - char keyClass; /* HASH_INT, _POINTER, _STRING, _BINARY */ - char copyKey; /* True if copy of key made on insert */ - int count; /* Number of entries in this table */ - fts1HashElem *first; /* The first element of the array */ - void *(*xMalloc)(int); /* malloc() function to use */ - void (*xFree)(void *); /* free() function to use */ - int htsize; /* Number of buckets in the hash table */ - struct _fts1ht { /* the hash table */ - int count; /* Number of entries with this hash */ - fts1HashElem *chain; /* Pointer to first entry with this hash */ - } *ht; -}; - -/* Each element in the hash table is an instance of the following -** structure. All elements are stored on a single doubly-linked list. -** -** Again, this structure is intended to be opaque, but it can't really -** be opaque because it is used by macros. -*/ -struct fts1HashElem { - fts1HashElem *next, *prev; /* Next and previous elements in the table */ - void *data; /* Data associated with this element */ - void *pKey; int nKey; /* Key associated with this element */ -}; - -/* -** There are 2 different modes of operation for a hash table: -** -** FTS1_HASH_STRING pKey points to a string that is nKey bytes long -** (including the null-terminator, if any). Case -** is respected in comparisons. -** -** FTS1_HASH_BINARY pKey points to binary data nKey bytes long. -** memcmp() is used to compare keys. -** -** A copy of the key is made if the copyKey parameter to fts1HashInit is 1. -*/ -#define FTS1_HASH_STRING 1 -#define FTS1_HASH_BINARY 2 - -/* -** Access routines. To delete, insert a NULL pointer. -*/ -void sqlite3Fts1HashInit(fts1Hash*, int keytype, int copyKey); -void *sqlite3Fts1HashInsert(fts1Hash*, const void *pKey, int nKey, void *pData); -void *sqlite3Fts1HashFind(const fts1Hash*, const void *pKey, int nKey); -void sqlite3Fts1HashClear(fts1Hash*); - -/* -** Shorthand for the functions above -*/ -#define fts1HashInit sqlite3Fts1HashInit -#define fts1HashInsert sqlite3Fts1HashInsert -#define fts1HashFind sqlite3Fts1HashFind -#define fts1HashClear sqlite3Fts1HashClear - -/* -** Macros for looping over all elements of a hash table. The idiom is -** like this: -** -** fts1Hash h; -** fts1HashElem *p; -** ... -** for(p=fts1HashFirst(&h); p; p=fts1HashNext(p)){ -** SomeStructure *pData = fts1HashData(p); -** // do something with pData -** } -*/ -#define fts1HashFirst(H) ((H)->first) -#define fts1HashNext(E) ((E)->next) -#define fts1HashData(E) ((E)->data) -#define fts1HashKey(E) ((E)->pKey) -#define fts1HashKeysize(E) ((E)->nKey) - -/* -** Number of entries in a hash table -*/ -#define fts1HashCount(H) ((H)->count) - -#endif /* _FTS1_HASH_H_ */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/fts1_porter.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/fts1_porter.c deleted file mode 100644 index 0a89fd37f5..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/fts1_porter.c +++ /dev/null @@ -1,643 +0,0 @@ -/* -** 2006 September 30 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** Implementation of the full-text-search tokenizer that implements -** a Porter stemmer. -*/ - -/* -** The code in this file is only compiled if: -** -** * The FTS1 module is being built as an extension -** (in which case SQLITE_CORE is not defined), or -** -** * The FTS1 module is being built into the core of -** SQLite (in which case SQLITE_ENABLE_FTS1 is defined). -*/ -#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS1) - - -#include -#include -#include -#include -#include - -#include "fts1_tokenizer.h" - -/* -** Class derived from sqlite3_tokenizer -*/ -typedef struct porter_tokenizer { - sqlite3_tokenizer base; /* Base class */ -} porter_tokenizer; - -/* -** Class derived from sqlit3_tokenizer_cursor -*/ -typedef struct porter_tokenizer_cursor { - sqlite3_tokenizer_cursor base; - const char *zInput; /* input we are tokenizing */ - int nInput; /* size of the input */ - int iOffset; /* current position in zInput */ - int iToken; /* index of next token to be returned */ - char *zToken; /* storage for current token */ - int nAllocated; /* space allocated to zToken buffer */ -} porter_tokenizer_cursor; - - -/* Forward declaration */ -static const sqlite3_tokenizer_module porterTokenizerModule; - - -/* -** Create a new tokenizer instance. -*/ -static int porterCreate( - int argc, const char * const *argv, - sqlite3_tokenizer **ppTokenizer -){ - porter_tokenizer *t; - t = (porter_tokenizer *) calloc(sizeof(*t), 1); - if( t==NULL ) return SQLITE_NOMEM; - - *ppTokenizer = &t->base; - return SQLITE_OK; -} - -/* -** Destroy a tokenizer -*/ -static int porterDestroy(sqlite3_tokenizer *pTokenizer){ - free(pTokenizer); - return SQLITE_OK; -} - -/* -** Prepare to begin tokenizing a particular string. The input -** string to be tokenized is zInput[0..nInput-1]. A cursor -** used to incrementally tokenize this string is returned in -** *ppCursor. -*/ -static int porterOpen( - sqlite3_tokenizer *pTokenizer, /* The tokenizer */ - const char *zInput, int nInput, /* String to be tokenized */ - sqlite3_tokenizer_cursor **ppCursor /* OUT: Tokenization cursor */ -){ - porter_tokenizer_cursor *c; - - c = (porter_tokenizer_cursor *) malloc(sizeof(*c)); - if( c==NULL ) return SQLITE_NOMEM; - - c->zInput = zInput; - if( zInput==0 ){ - c->nInput = 0; - }else if( nInput<0 ){ - c->nInput = (int)strlen(zInput); - }else{ - c->nInput = nInput; - } - c->iOffset = 0; /* start tokenizing at the beginning */ - c->iToken = 0; - c->zToken = NULL; /* no space allocated, yet. */ - c->nAllocated = 0; - - *ppCursor = &c->base; - return SQLITE_OK; -} - -/* -** Close a tokenization cursor previously opened by a call to -** porterOpen() above. -*/ -static int porterClose(sqlite3_tokenizer_cursor *pCursor){ - porter_tokenizer_cursor *c = (porter_tokenizer_cursor *) pCursor; - free(c->zToken); - free(c); - return SQLITE_OK; -} -/* -** Vowel or consonant -*/ -static const char cType[] = { - 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, - 1, 1, 1, 2, 1 -}; - -/* -** isConsonant() and isVowel() determine if their first character in -** the string they point to is a consonant or a vowel, according -** to Porter ruls. -** -** A consonate is any letter other than 'a', 'e', 'i', 'o', or 'u'. -** 'Y' is a consonant unless it follows another consonant, -** in which case it is a vowel. -** -** In these routine, the letters are in reverse order. So the 'y' rule -** is that 'y' is a consonant unless it is followed by another -** consonent. -*/ -static int isVowel(const char*); -static int isConsonant(const char *z){ - int j; - char x = *z; - if( x==0 ) return 0; - assert( x>='a' && x<='z' ); - j = cType[x-'a']; - if( j<2 ) return j; - return z[1]==0 || isVowel(z + 1); -} -static int isVowel(const char *z){ - int j; - char x = *z; - if( x==0 ) return 0; - assert( x>='a' && x<='z' ); - j = cType[x-'a']; - if( j<2 ) return 1-j; - return isConsonant(z + 1); -} - -/* -** Let any sequence of one or more vowels be represented by V and let -** C be sequence of one or more consonants. Then every word can be -** represented as: -** -** [C] (VC){m} [V] -** -** In prose: A word is an optional consonant followed by zero or -** vowel-consonant pairs followed by an optional vowel. "m" is the -** number of vowel consonant pairs. This routine computes the value -** of m for the first i bytes of a word. -** -** Return true if the m-value for z is 1 or more. In other words, -** return true if z contains at least one vowel that is followed -** by a consonant. -** -** In this routine z[] is in reverse order. So we are really looking -** for an instance of of a consonant followed by a vowel. -*/ -static int m_gt_0(const char *z){ - while( isVowel(z) ){ z++; } - if( *z==0 ) return 0; - while( isConsonant(z) ){ z++; } - return *z!=0; -} - -/* Like mgt0 above except we are looking for a value of m which is -** exactly 1 -*/ -static int m_eq_1(const char *z){ - while( isVowel(z) ){ z++; } - if( *z==0 ) return 0; - while( isConsonant(z) ){ z++; } - if( *z==0 ) return 0; - while( isVowel(z) ){ z++; } - if( *z==0 ) return 1; - while( isConsonant(z) ){ z++; } - return *z==0; -} - -/* Like mgt0 above except we are looking for a value of m>1 instead -** or m>0 -*/ -static int m_gt_1(const char *z){ - while( isVowel(z) ){ z++; } - if( *z==0 ) return 0; - while( isConsonant(z) ){ z++; } - if( *z==0 ) return 0; - while( isVowel(z) ){ z++; } - if( *z==0 ) return 0; - while( isConsonant(z) ){ z++; } - return *z!=0; -} - -/* -** Return TRUE if there is a vowel anywhere within z[0..n-1] -*/ -static int hasVowel(const char *z){ - while( isConsonant(z) ){ z++; } - return *z!=0; -} - -/* -** Return TRUE if the word ends in a double consonant. -** -** The text is reversed here. So we are really looking at -** the first two characters of z[]. -*/ -static int doubleConsonant(const char *z){ - return isConsonant(z) && z[0]==z[1] && isConsonant(z+1); -} - -/* -** Return TRUE if the word ends with three letters which -** are consonant-vowel-consonent and where the final consonant -** is not 'w', 'x', or 'y'. -** -** The word is reversed here. So we are really checking the -** first three letters and the first one cannot be in [wxy]. -*/ -static int star_oh(const char *z){ - return - z[0]!=0 && isConsonant(z) && - z[0]!='w' && z[0]!='x' && z[0]!='y' && - z[1]!=0 && isVowel(z+1) && - z[2]!=0 && isConsonant(z+2); -} - -/* -** If the word ends with zFrom and xCond() is true for the stem -** of the word that preceeds the zFrom ending, then change the -** ending to zTo. -** -** The input word *pz and zFrom are both in reverse order. zTo -** is in normal order. -** -** Return TRUE if zFrom matches. Return FALSE if zFrom does not -** match. Not that TRUE is returned even if xCond() fails and -** no substitution occurs. -*/ -static int stem( - char **pz, /* The word being stemmed (Reversed) */ - const char *zFrom, /* If the ending matches this... (Reversed) */ - const char *zTo, /* ... change the ending to this (not reversed) */ - int (*xCond)(const char*) /* Condition that must be true */ -){ - char *z = *pz; - while( *zFrom && *zFrom==*z ){ z++; zFrom++; } - if( *zFrom!=0 ) return 0; - if( xCond && !xCond(z) ) return 1; - while( *zTo ){ - *(--z) = *(zTo++); - } - *pz = z; - return 1; -} - -/* -** This is the fallback stemmer used when the porter stemmer is -** inappropriate. The input word is copied into the output with -** US-ASCII case folding. If the input word is too long (more -** than 20 bytes if it contains no digits or more than 6 bytes if -** it contains digits) then word is truncated to 20 or 6 bytes -** by taking 10 or 3 bytes from the beginning and end. -*/ -static void copy_stemmer(const char *zIn, int nIn, char *zOut, int *pnOut){ - int i, mx, j; - int hasDigit = 0; - for(i=0; i='A' && c<='Z' ){ - zOut[i] = c - 'A' + 'a'; - }else{ - if( c>='0' && c<='9' ) hasDigit = 1; - zOut[i] = c; - } - } - mx = hasDigit ? 3 : 10; - if( nIn>mx*2 ){ - for(j=mx, i=nIn-mx; i=sizeof(zReverse)-7 ){ - /* The word is too big or too small for the porter stemmer. - ** Fallback to the copy stemmer */ - copy_stemmer(zIn, nIn, zOut, pnOut); - return; - } - for(i=0, j=sizeof(zReverse)-6; i='A' && c<='Z' ){ - zReverse[j] = c + 'a' - 'A'; - }else if( c>='a' && c<='z' ){ - zReverse[j] = c; - }else{ - /* The use of a character not in [a-zA-Z] means that we fallback - ** to the copy stemmer */ - copy_stemmer(zIn, nIn, zOut, pnOut); - return; - } - } - memset(&zReverse[sizeof(zReverse)-5], 0, 5); - z = &zReverse[j+1]; - - - /* Step 1a */ - if( z[0]=='s' ){ - if( - !stem(&z, "sess", "ss", 0) && - !stem(&z, "sei", "i", 0) && - !stem(&z, "ss", "ss", 0) - ){ - z++; - } - } - - /* Step 1b */ - z2 = z; - if( stem(&z, "dee", "ee", m_gt_0) ){ - /* Do nothing. The work was all in the test */ - }else if( - (stem(&z, "gni", "", hasVowel) || stem(&z, "de", "", hasVowel)) - && z!=z2 - ){ - if( stem(&z, "ta", "ate", 0) || - stem(&z, "lb", "ble", 0) || - stem(&z, "zi", "ize", 0) ){ - /* Do nothing. The work was all in the test */ - }else if( doubleConsonant(z) && (*z!='l' && *z!='s' && *z!='z') ){ - z++; - }else if( m_eq_1(z) && star_oh(z) ){ - *(--z) = 'e'; - } - } - - /* Step 1c */ - if( z[0]=='y' && hasVowel(z+1) ){ - z[0] = 'i'; - } - - /* Step 2 */ - switch( z[1] ){ - case 'a': - stem(&z, "lanoita", "ate", m_gt_0) || - stem(&z, "lanoit", "tion", m_gt_0); - break; - case 'c': - stem(&z, "icne", "ence", m_gt_0) || - stem(&z, "icna", "ance", m_gt_0); - break; - case 'e': - stem(&z, "rezi", "ize", m_gt_0); - break; - case 'g': - stem(&z, "igol", "log", m_gt_0); - break; - case 'l': - stem(&z, "ilb", "ble", m_gt_0) || - stem(&z, "illa", "al", m_gt_0) || - stem(&z, "iltne", "ent", m_gt_0) || - stem(&z, "ile", "e", m_gt_0) || - stem(&z, "ilsuo", "ous", m_gt_0); - break; - case 'o': - stem(&z, "noitazi", "ize", m_gt_0) || - stem(&z, "noita", "ate", m_gt_0) || - stem(&z, "rota", "ate", m_gt_0); - break; - case 's': - stem(&z, "msila", "al", m_gt_0) || - stem(&z, "ssenevi", "ive", m_gt_0) || - stem(&z, "ssenluf", "ful", m_gt_0) || - stem(&z, "ssensuo", "ous", m_gt_0); - break; - case 't': - stem(&z, "itila", "al", m_gt_0) || - stem(&z, "itivi", "ive", m_gt_0) || - stem(&z, "itilib", "ble", m_gt_0); - break; - } - - /* Step 3 */ - switch( z[0] ){ - case 'e': - stem(&z, "etaci", "ic", m_gt_0) || - stem(&z, "evita", "", m_gt_0) || - stem(&z, "ezila", "al", m_gt_0); - break; - case 'i': - stem(&z, "itici", "ic", m_gt_0); - break; - case 'l': - stem(&z, "laci", "ic", m_gt_0) || - stem(&z, "luf", "", m_gt_0); - break; - case 's': - stem(&z, "ssen", "", m_gt_0); - break; - } - - /* Step 4 */ - switch( z[1] ){ - case 'a': - if( z[0]=='l' && m_gt_1(z+2) ){ - z += 2; - } - break; - case 'c': - if( z[0]=='e' && z[2]=='n' && (z[3]=='a' || z[3]=='e') && m_gt_1(z+4) ){ - z += 4; - } - break; - case 'e': - if( z[0]=='r' && m_gt_1(z+2) ){ - z += 2; - } - break; - case 'i': - if( z[0]=='c' && m_gt_1(z+2) ){ - z += 2; - } - break; - case 'l': - if( z[0]=='e' && z[2]=='b' && (z[3]=='a' || z[3]=='i') && m_gt_1(z+4) ){ - z += 4; - } - break; - case 'n': - if( z[0]=='t' ){ - if( z[2]=='a' ){ - if( m_gt_1(z+3) ){ - z += 3; - } - }else if( z[2]=='e' ){ - stem(&z, "tneme", "", m_gt_1) || - stem(&z, "tnem", "", m_gt_1) || - stem(&z, "tne", "", m_gt_1); - } - } - break; - case 'o': - if( z[0]=='u' ){ - if( m_gt_1(z+2) ){ - z += 2; - } - }else if( z[3]=='s' || z[3]=='t' ){ - stem(&z, "noi", "", m_gt_1); - } - break; - case 's': - if( z[0]=='m' && z[2]=='i' && m_gt_1(z+3) ){ - z += 3; - } - break; - case 't': - stem(&z, "eta", "", m_gt_1) || - stem(&z, "iti", "", m_gt_1); - break; - case 'u': - if( z[0]=='s' && z[2]=='o' && m_gt_1(z+3) ){ - z += 3; - } - break; - case 'v': - case 'z': - if( z[0]=='e' && z[2]=='i' && m_gt_1(z+3) ){ - z += 3; - } - break; - } - - /* Step 5a */ - if( z[0]=='e' ){ - if( m_gt_1(z+1) ){ - z++; - }else if( m_eq_1(z+1) && !star_oh(z+1) ){ - z++; - } - } - - /* Step 5b */ - if( m_gt_1(z) && z[0]=='l' && z[1]=='l' ){ - z++; - } - - /* z[] is now the stemmed word in reverse order. Flip it back - ** around into forward order and return. - */ - *pnOut = i = strlen(z); - zOut[i] = 0; - while( *z ){ - zOut[--i] = *(z++); - } -} - -/* -** Characters that can be part of a token. We assume any character -** whose value is greater than 0x80 (any UTF character) can be -** part of a token. In other words, delimiters all must have -** values of 0x7f or lower. -*/ -static const char isIdChar[] = { -/* x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 xA xB xC xD xE xF */ - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, /* 3x */ - 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 4x */ - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, /* 5x */ - 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 6x */ - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, /* 7x */ -}; -#define idChar(C) (((ch=C)&0x80)!=0 || (ch>0x2f && isIdChar[ch-0x30])) -#define isDelim(C) (((ch=C)&0x80)==0 && (ch<0x30 || !isIdChar[ch-0x30])) - -/* -** Extract the next token from a tokenization cursor. The cursor must -** have been opened by a prior call to porterOpen(). -*/ -static int porterNext( - sqlite3_tokenizer_cursor *pCursor, /* Cursor returned by porterOpen */ - const char **pzToken, /* OUT: *pzToken is the token text */ - int *pnBytes, /* OUT: Number of bytes in token */ - int *piStartOffset, /* OUT: Starting offset of token */ - int *piEndOffset, /* OUT: Ending offset of token */ - int *piPosition /* OUT: Position integer of token */ -){ - porter_tokenizer_cursor *c = (porter_tokenizer_cursor *) pCursor; - const char *z = c->zInput; - - while( c->iOffsetnInput ){ - int iStartOffset, ch; - - /* Scan past delimiter characters */ - while( c->iOffsetnInput && isDelim(z[c->iOffset]) ){ - c->iOffset++; - } - - /* Count non-delimiter characters. */ - iStartOffset = c->iOffset; - while( c->iOffsetnInput && !isDelim(z[c->iOffset]) ){ - c->iOffset++; - } - - if( c->iOffset>iStartOffset ){ - int n = c->iOffset-iStartOffset; - if( n>c->nAllocated ){ - c->nAllocated = n+20; - c->zToken = realloc(c->zToken, c->nAllocated); - if( c->zToken==NULL ) return SQLITE_NOMEM; - } - porter_stemmer(&z[iStartOffset], n, c->zToken, pnBytes); - *pzToken = c->zToken; - *piStartOffset = iStartOffset; - *piEndOffset = c->iOffset; - *piPosition = c->iToken++; - return SQLITE_OK; - } - } - return SQLITE_DONE; -} - -/* -** The set of routines that implement the porter-stemmer tokenizer -*/ -static const sqlite3_tokenizer_module porterTokenizerModule = { - 0, - porterCreate, - porterDestroy, - porterOpen, - porterClose, - porterNext, -}; - -/* -** Allocate a new porter tokenizer. Return a pointer to the new -** tokenizer in *ppModule -*/ -void sqlite3Fts1PorterTokenizerModule( - sqlite3_tokenizer_module const**ppModule -){ - *ppModule = &porterTokenizerModule; -} - -#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS1) */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/fts1_tokenizer.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/fts1_tokenizer.h deleted file mode 100644 index 0d6c2abe59..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/fts1_tokenizer.h +++ /dev/null @@ -1,90 +0,0 @@ -/* -** 2006 July 10 -** -** The author disclaims copyright to this source code. -** -************************************************************************* -** Defines the interface to tokenizers used by fulltext-search. There -** are three basic components: -** -** sqlite3_tokenizer_module is a singleton defining the tokenizer -** interface functions. This is essentially the class structure for -** tokenizers. -** -** sqlite3_tokenizer is used to define a particular tokenizer, perhaps -** including customization information defined at creation time. -** -** sqlite3_tokenizer_cursor is generated by a tokenizer to generate -** tokens from a particular input. -*/ -#ifndef _FTS1_TOKENIZER_H_ -#define _FTS1_TOKENIZER_H_ - -/* TODO(shess) Only used for SQLITE_OK and SQLITE_DONE at this time. -** If tokenizers are to be allowed to call sqlite3_*() functions, then -** we will need a way to register the API consistently. -*/ -#include "sqlite3.h" - -/* -** Structures used by the tokenizer interface. -*/ -typedef struct sqlite3_tokenizer sqlite3_tokenizer; -typedef struct sqlite3_tokenizer_cursor sqlite3_tokenizer_cursor; -typedef struct sqlite3_tokenizer_module sqlite3_tokenizer_module; - -struct sqlite3_tokenizer_module { - int iVersion; /* currently 0 */ - - /* - ** Create and destroy a tokenizer. argc/argv are passed down from - ** the fulltext virtual table creation to allow customization. - */ - int (*xCreate)(int argc, const char *const*argv, - sqlite3_tokenizer **ppTokenizer); - int (*xDestroy)(sqlite3_tokenizer *pTokenizer); - - /* - ** Tokenize a particular input. Call xOpen() to prepare to - ** tokenize, xNext() repeatedly until it returns SQLITE_DONE, then - ** xClose() to free any internal state. The pInput passed to - ** xOpen() must exist until the cursor is closed. The ppToken - ** result from xNext() is only valid until the next call to xNext() - ** or until xClose() is called. - */ - /* TODO(shess) current implementation requires pInput to be - ** nul-terminated. This should either be fixed, or pInput/nBytes - ** should be converted to zInput. - */ - int (*xOpen)(sqlite3_tokenizer *pTokenizer, - const char *pInput, int nBytes, - sqlite3_tokenizer_cursor **ppCursor); - int (*xClose)(sqlite3_tokenizer_cursor *pCursor); - int (*xNext)(sqlite3_tokenizer_cursor *pCursor, - const char **ppToken, int *pnBytes, - int *piStartOffset, int *piEndOffset, int *piPosition); -}; - -struct sqlite3_tokenizer { - const sqlite3_tokenizer_module *pModule; /* The module for this tokenizer */ - /* Tokenizer implementations will typically add additional fields */ -}; - -struct sqlite3_tokenizer_cursor { - sqlite3_tokenizer *pTokenizer; /* Tokenizer for this cursor. */ - /* Tokenizer implementations will typically add additional fields */ -}; - -/* -** Get the module for a tokenizer which generates tokens based on a -** set of non-token characters. The default is to break tokens at any -** non-alnum character, though the set of delimiters can also be -** specified by the first argv argument to xCreate(). -*/ -/* TODO(shess) This doesn't belong here. Need some sort of -** registration process. -*/ -void sqlite3Fts1SimpleTokenizerModule(sqlite3_tokenizer_module const**ppModule); -void sqlite3Fts1PorterTokenizerModule(sqlite3_tokenizer_module const**ppModule); - -#endif /* _FTS1_TOKENIZER_H_ */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/fts1_tokenizer1.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/fts1_tokenizer1.c deleted file mode 100644 index 98c75ff738..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/fts1_tokenizer1.c +++ /dev/null @@ -1,221 +0,0 @@ -/* -** The author disclaims copyright to this source code. -** -************************************************************************* -** Implementation of the "simple" full-text-search tokenizer. -*/ - -/* -** The code in this file is only compiled if: -** -** * The FTS1 module is being built as an extension -** (in which case SQLITE_CORE is not defined), or -** -** * The FTS1 module is being built into the core of -** SQLite (in which case SQLITE_ENABLE_FTS1 is defined). -*/ -#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS1) - - -#include -#include -#include -#include -#include - -#include "fts1_tokenizer.h" - -typedef struct simple_tokenizer { - sqlite3_tokenizer base; - char delim[128]; /* flag ASCII delimiters */ -} simple_tokenizer; - -typedef struct simple_tokenizer_cursor { - sqlite3_tokenizer_cursor base; - const char *pInput; /* input we are tokenizing */ - int nBytes; /* size of the input */ - int iOffset; /* current position in pInput */ - int iToken; /* index of next token to be returned */ - char *pToken; /* storage for current token */ - int nTokenAllocated; /* space allocated to zToken buffer */ -} simple_tokenizer_cursor; - - -/* Forward declaration */ -static const sqlite3_tokenizer_module simpleTokenizerModule; - -static int isDelim(simple_tokenizer *t, unsigned char c){ - return c<0x80 && t->delim[c]; -} - -/* -** Create a new tokenizer instance. -*/ -static int simpleCreate( - int argc, const char * const *argv, - sqlite3_tokenizer **ppTokenizer -){ - simple_tokenizer *t; - - t = (simple_tokenizer *) calloc(sizeof(*t), 1); - if( t==NULL ) return SQLITE_NOMEM; - - /* TODO(shess) Delimiters need to remain the same from run to run, - ** else we need to reindex. One solution would be a meta-table to - ** track such information in the database, then we'd only want this - ** information on the initial create. - */ - if( argc>1 ){ - int i, n = strlen(argv[1]); - for(i=0; i=0x80 ){ - free(t); - return SQLITE_ERROR; - } - t->delim[ch] = 1; - } - } else { - /* Mark non-alphanumeric ASCII characters as delimiters */ - int i; - for(i=1; i<0x80; i++){ - t->delim[i] = !isalnum(i); - } - } - - *ppTokenizer = &t->base; - return SQLITE_OK; -} - -/* -** Destroy a tokenizer -*/ -static int simpleDestroy(sqlite3_tokenizer *pTokenizer){ - free(pTokenizer); - return SQLITE_OK; -} - -/* -** Prepare to begin tokenizing a particular string. The input -** string to be tokenized is pInput[0..nBytes-1]. A cursor -** used to incrementally tokenize this string is returned in -** *ppCursor. -*/ -static int simpleOpen( - sqlite3_tokenizer *pTokenizer, /* The tokenizer */ - const char *pInput, int nBytes, /* String to be tokenized */ - sqlite3_tokenizer_cursor **ppCursor /* OUT: Tokenization cursor */ -){ - simple_tokenizer_cursor *c; - - c = (simple_tokenizer_cursor *) malloc(sizeof(*c)); - if( c==NULL ) return SQLITE_NOMEM; - - c->pInput = pInput; - if( pInput==0 ){ - c->nBytes = 0; - }else if( nBytes<0 ){ - c->nBytes = (int)strlen(pInput); - }else{ - c->nBytes = nBytes; - } - c->iOffset = 0; /* start tokenizing at the beginning */ - c->iToken = 0; - c->pToken = NULL; /* no space allocated, yet. */ - c->nTokenAllocated = 0; - - *ppCursor = &c->base; - return SQLITE_OK; -} - -/* -** Close a tokenization cursor previously opened by a call to -** simpleOpen() above. -*/ -static int simpleClose(sqlite3_tokenizer_cursor *pCursor){ - simple_tokenizer_cursor *c = (simple_tokenizer_cursor *) pCursor; - free(c->pToken); - free(c); - return SQLITE_OK; -} - -/* -** Extract the next token from a tokenization cursor. The cursor must -** have been opened by a prior call to simpleOpen(). -*/ -static int simpleNext( - sqlite3_tokenizer_cursor *pCursor, /* Cursor returned by simpleOpen */ - const char **ppToken, /* OUT: *ppToken is the token text */ - int *pnBytes, /* OUT: Number of bytes in token */ - int *piStartOffset, /* OUT: Starting offset of token */ - int *piEndOffset, /* OUT: Ending offset of token */ - int *piPosition /* OUT: Position integer of token */ -){ - simple_tokenizer_cursor *c = (simple_tokenizer_cursor *) pCursor; - simple_tokenizer *t = (simple_tokenizer *) pCursor->pTokenizer; - unsigned char *p = (unsigned char *)c->pInput; - - while( c->iOffsetnBytes ){ - int iStartOffset; - - /* Scan past delimiter characters */ - while( c->iOffsetnBytes && isDelim(t, p[c->iOffset]) ){ - c->iOffset++; - } - - /* Count non-delimiter characters. */ - iStartOffset = c->iOffset; - while( c->iOffsetnBytes && !isDelim(t, p[c->iOffset]) ){ - c->iOffset++; - } - - if( c->iOffset>iStartOffset ){ - int i, n = c->iOffset-iStartOffset; - if( n>c->nTokenAllocated ){ - c->nTokenAllocated = n+20; - c->pToken = realloc(c->pToken, c->nTokenAllocated); - if( c->pToken==NULL ) return SQLITE_NOMEM; - } - for(i=0; ipToken[i] = ch<0x80 ? tolower(ch) : ch; - } - *ppToken = c->pToken; - *pnBytes = n; - *piStartOffset = iStartOffset; - *piEndOffset = c->iOffset; - *piPosition = c->iToken++; - - return SQLITE_OK; - } - } - return SQLITE_DONE; -} - -/* -** The set of routines that implement the simple tokenizer -*/ -static const sqlite3_tokenizer_module simpleTokenizerModule = { - 0, - simpleCreate, - simpleDestroy, - simpleOpen, - simpleClose, - simpleNext, -}; - -/* -** Allocate a new simple tokenizer. Return a pointer to the new -** tokenizer in *ppModule -*/ -void sqlite3Fts1SimpleTokenizerModule( - sqlite3_tokenizer_module const**ppModule -){ - *ppModule = &simpleTokenizerModule; -} - -#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS1) */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/fulltext.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/fulltext.c deleted file mode 100644 index 360854ae19..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/fulltext.c +++ /dev/null @@ -1,1496 +0,0 @@ -/* The author disclaims copyright to this source code. - * - * This is an SQLite module implementing full-text search. - */ - -#include -#if !defined(__APPLE__) -#include -#else -#include -#endif -#include -#include -#include - -#include "fulltext.h" -#include "ft_hash.h" -#include "tokenizer.h" -#include "sqlite3.h" -#include "sqlite3ext.h" -SQLITE_EXTENSION_INIT1 - -/* utility functions */ - -/* We encode variable-length integers in little-endian order using seven bits - * per byte as follows: -** -** KEY: -** A = 0xxxxxxx 7 bits of data and one flag bit -** B = 1xxxxxxx 7 bits of data and one flag bit -** -** 7 bits - A -** 14 bits - BA -** 21 bits - BBA -** and so on. -*/ - -/* We may need up to VARINT_MAX bytes to store an encoded 64-bit integer. */ -#define VARINT_MAX 10 - -/* Write a 64-bit variable-length integer to memory starting at p[0]. - * The length of data written will be between 1 and VARINT_MAX bytes. - * The number of bytes written is returned. */ -static int putVarint(char *p, sqlite_int64 v){ - unsigned char *q = (unsigned char *) p; - sqlite_uint64 vu = v; - do{ - *q++ = (unsigned char) ((vu & 0x7f) | 0x80); - vu >>= 7; - }while( vu!=0 ); - q[-1] &= 0x7f; /* turn off high bit in final byte */ - assert( q - (unsigned char *)p <= VARINT_MAX ); - return (int) (q - (unsigned char *)p); -} - -/* Read a 64-bit variable-length integer from memory starting at p[0]. - * Return the number of bytes read, or 0 on error. - * The value is stored in *v. */ -static int getVarint(const char *p, sqlite_int64 *v){ - const unsigned char *q = (const unsigned char *) p; - sqlite_uint64 x = 0, y = 1; - while( (*q & 0x80) == 0x80 ){ - x += y * (*q++ & 0x7f); - y <<= 7; - if( q - (unsigned char *)p >= VARINT_MAX ){ /* bad data */ - assert( 0 ); - return 0; - } - } - x += y * (*q++); - *v = (sqlite_int64) x; - return (int) (q - (unsigned char *)p); -} - -static int getVarint32(const char *p, int *pi){ - sqlite_int64 i; - int ret = getVarint(p, &i); - *pi = (int) i; - assert( *pi==i ); - return ret; -} - -/*** Document lists *** - * - * A document list holds a sorted list of varint-encoded document IDs. - * - * A doclist with type DL_POSITIONS_OFFSETS is stored like this: - * - * array { - * varint docid; - * array { - * varint position; (delta from previous position plus 1, or 0 for end) - * varint startOffset; (delta from previous startOffset) - * varint endOffset; (delta from startOffset) - * } - * } - * - * Here, array { X } means zero or more occurrences of X, adjacent in memory. - * - * A doclist with type DL_POSITIONS is like the above, but holds only docids - * and positions without offset information. - * - * A doclist with type DL_DOCIDS is like the above, but holds only docids - * without positions or offset information. - * - * On disk, every document list has positions and offsets, so we don't bother - * to serialize a doclist's type. - * - * We don't yet delta-encode document IDs; doing so will probably be a - * modest win. - * - * NOTE(shess) I've thought of a slightly (1%) better offset encoding. - * After the first offset, estimate the next offset by using the - * current token position and the previous token position and offset, - * offset to handle some variance. So the estimate would be - * (iPosition*w->iStartOffset/w->iPosition-64), which is delta-encoded - * as normal. Offsets more than 64 chars from the estimate are - * encoded as the delta to the previous start offset + 128. An - * additional tiny increment can be gained by using the end offset of - * the previous token to make the estimate a tiny bit more precise. -*/ - -typedef enum DocListType { - DL_DOCIDS, /* docids only */ - DL_POSITIONS, /* docids + positions */ - DL_POSITIONS_OFFSETS /* docids + positions + offsets */ -} DocListType; - -typedef struct DocList { - char *pData; - int nData; - DocListType iType; - int iLastPos; /* the last position written */ - int iLastOffset; /* the last start offset written */ -} DocList; - -/* Initialize a new DocList to hold the given data. */ -static void docListInit(DocList *d, DocListType iType, - const char *pData, int nData){ - d->nData = nData; - if( nData>0 ){ - d->pData = malloc(nData); - memcpy(d->pData, pData, nData); - } else { - d->pData = NULL; - } - d->iType = iType; - d->iLastPos = 0; - d->iLastOffset = 0; -} - -/* Create a new dynamically-allocated DocList. */ -static DocList *docListNew(DocListType iType){ - DocList *d = (DocList *) malloc(sizeof(DocList)); - docListInit(d, iType, 0, 0); - return d; -} - -static void docListDestroy(DocList *d){ - free(d->pData); -#ifndef NDEBUG - memset(d, 0x55, sizeof(*d)); -#endif -} - -static void docListDelete(DocList *d){ - docListDestroy(d); - free(d); -} - -static char *docListEnd(DocList *d){ - return d->pData + d->nData; -} - -/* Append a varint to a DocList's data. */ -static void appendVarint(DocList *d, sqlite_int64 i){ - char c[VARINT_MAX]; - int n = putVarint(c, i); - d->pData = realloc(d->pData, d->nData + n); - memcpy(d->pData + d->nData, c, n); - d->nData += n; -} - -static void docListAddDocid(DocList *d, sqlite_int64 iDocid){ - appendVarint(d, iDocid); - d->iLastPos = 0; -} - -/* Add a position to the last position list in a doclist. */ -static void docListAddPos(DocList *d, int iPos){ - assert( d->iType>=DL_POSITIONS ); - appendVarint(d, iPos-d->iLastPos+1); - d->iLastPos = iPos; -} - -static void docListAddPosOffset(DocList *d, int iPos, - int iStartOffset, int iEndOffset){ - assert( d->iType==DL_POSITIONS_OFFSETS ); - docListAddPos(d, iPos); - appendVarint(d, iStartOffset-d->iLastOffset); - d->iLastOffset = iStartOffset; - appendVarint(d, iEndOffset-iStartOffset); -} - -/* Terminate the last position list in the given doclist. */ -static void docListAddEndPos(DocList *d){ - appendVarint(d, 0); -} - -typedef struct DocListReader { - DocList *pDoclist; - char *p; - int iLastPos; /* the last position read */ -} DocListReader; - -static void readerInit(DocListReader *r, DocList *pDoclist){ - r->pDoclist = pDoclist; - if( pDoclist!=NULL ){ - r->p = pDoclist->pData; - } - r->iLastPos = 0; -} - -static int readerAtEnd(DocListReader *pReader){ - return pReader->p >= docListEnd(pReader->pDoclist); -} - -/* Peek at the next docid without advancing the read pointer. */ -static sqlite_int64 peekDocid(DocListReader *pReader){ - sqlite_int64 ret; - assert( !readerAtEnd(pReader) ); - getVarint(pReader->p, &ret); - return ret; -} - -/* Read the next docid. */ -static sqlite_int64 readDocid(DocListReader *pReader){ - sqlite_int64 ret; - assert( !readerAtEnd(pReader) ); - pReader->p += getVarint(pReader->p, &ret); - pReader->iLastPos = 0; - return ret; -} - -/* Read the next position from a position list. - * Returns the position, or -1 at the end of the list. */ -static int readPosition(DocListReader *pReader){ - int i; - int iType = pReader->pDoclist->iType; - assert( iType>=DL_POSITIONS ); - assert( !readerAtEnd(pReader) ); - - pReader->p += getVarint32(pReader->p, &i); - if( i==0 ){ - pReader->iLastPos = -1; - return -1; - } - pReader->iLastPos += ((int) i)-1; - if( iType>=DL_POSITIONS_OFFSETS ){ - /* Skip over offsets, ignoring them for now. */ - int iStart, iEnd; - pReader->p += getVarint32(pReader->p, &iStart); - pReader->p += getVarint32(pReader->p, &iEnd); - } - return pReader->iLastPos; -} - -/* Skip past the end of a position list. */ -static void skipPositionList(DocListReader *pReader){ - while( readPosition(pReader)!=-1 ) - ; -} - -/* Skip over a docid, including its position list if the doclist has - * positions. */ -static void skipDocument(DocListReader *pReader){ - readDocid(pReader); - if( pReader->pDoclist->iType >= DL_POSITIONS ){ - skipPositionList(pReader); - } -} - -static sqlite_int64 firstDocid(DocList *d){ - DocListReader r; - readerInit(&r, d); - return readDocid(&r); -} - -/* Doclist multi-tool. Pass pUpdate==NULL to delete the indicated docid; - * otherwise pUpdate, which must contain only the single docid [iDocid], is - * inserted (if not present) or updated (if already present). */ -static int docListUpdate(DocList *d, sqlite_int64 iDocid, DocList *pUpdate){ - int modified = 0; - DocListReader reader; - char *p; - - if( pUpdate!=NULL ){ - assert( d->iType==pUpdate->iType); - assert( iDocid==firstDocid(pUpdate) ); - } - - readerInit(&reader, d); - while( !readerAtEnd(&reader) && peekDocid(&reader)nData -= (reader.p - p); - modified = 1; - } - - /* Insert if indicated. */ - if( pUpdate!=NULL ){ - int iDoclist = p-d->pData; - docListAddEndPos(pUpdate); - - d->pData = realloc(d->pData, d->nData+pUpdate->nData); - p = d->pData + iDoclist; - - memmove(p+pUpdate->nData, p, docListEnd(d) - p); - memcpy(p, pUpdate->pData, pUpdate->nData); - d->nData += pUpdate->nData; - modified = 1; - } - - return modified; -} - -/* Split the second half of doclist d into a separate doclist d2. Returns 1 - * if successful, or 0 if d contains a single document and hence can't be - * split. */ -static int docListSplit(DocList *d, DocList *d2){ - const char *pSplitPoint = d->pData + d->nData / 2; - DocListReader reader; - - readerInit(&reader, d); - while( reader.piType, reader.p, docListEnd(d) - reader.p); - d->nData = reader.p - d->pData; - d->pData = realloc(d->pData, d->nData); - return 1; -} - -/* A DocListMerge computes the AND of an in-memory DocList [in] and a chunked - * on-disk doclist, resulting in another in-memory DocList [out]. [in] - * and [out] may or may not store position information according to the - * caller's wishes. The on-disk doclist always comes with positions. - * - * The caller must read each chunk of the on-disk doclist in succession and - * pass it to mergeBlock(). - * - * If [in] has positions, then the merge output contains only documents with - * matching positions in the two input doclists. If [in] does not have - * positions, then the merge output contains all documents common to the two - * input doclists. - * - * If [in] is NULL, then the on-disk doclist is copied to [out] directly. - * - * A merge is performed using an integer [iOffset] provided by the caller. - * [iOffset] is subtracted from each position in the on-disk doclist for the - * purpose of position comparison; this is helpful in implementing phrase - * searches. - * - * A DocListMerge is not yet able to propagate offsets through query - * processing; we should add that capability soon. -*/ -typedef struct DocListMerge { - DocListReader in; - DocList *pOut; - int iOffset; -} DocListMerge; - -static void mergeInit(DocListMerge *m, - DocList *pIn, int iOffset, DocList *pOut){ - readerInit(&m->in, pIn); - m->pOut = pOut; - m->iOffset = iOffset; - - /* can't handle offsets yet */ - assert( pIn==NULL || pIn->iType <= DL_POSITIONS ); - assert( pOut->iType <= DL_POSITIONS ); -} - -/* A helper function for mergeBlock(), below. Merge the position lists - * pointed to by m->in and pBlockReader. - * If the merge matches, write [iDocid] to m->pOut; if m->pOut - * has positions then write all matching positions as well. */ -static void mergePosList(DocListMerge *m, sqlite_int64 iDocid, - DocListReader *pBlockReader){ - int block_pos = readPosition(pBlockReader); - int in_pos = readPosition(&m->in); - int match = 0; - while( block_pos!=-1 || in_pos!=-1 ){ - if( block_pos-m->iOffset==in_pos ){ - if( !match ){ - docListAddDocid(m->pOut, iDocid); - match = 1; - } - if( m->pOut->iType >= DL_POSITIONS ){ - docListAddPos(m->pOut, in_pos); - } - block_pos = readPosition(pBlockReader); - in_pos = readPosition(&m->in); - } else if( in_pos==-1 || (block_pos!=-1 && block_pos-m->iOffsetin); - } - } - if( m->pOut->iType >= DL_POSITIONS && match ){ - docListAddEndPos(m->pOut); - } -} - -/* Merge one block of an on-disk doclist into a DocListMerge. */ -static void mergeBlock(DocListMerge *m, DocList *pBlock){ - DocListReader blockReader; - assert( pBlock->iType >= DL_POSITIONS ); - readerInit(&blockReader, pBlock); - while( !readerAtEnd(&blockReader) ){ - sqlite_int64 iDocid = readDocid(&blockReader); - if( m->in.pDoclist!=NULL ){ - while( 1 ){ - if( readerAtEnd(&m->in) ) return; /* nothing more to merge */ - if( peekDocid(&m->in)>=iDocid ) break; - skipDocument(&m->in); - } - if( peekDocid(&m->in)>iDocid ){ /* [pIn] has no match with iDocid */ - skipPositionList(&blockReader); /* skip this docid in the block */ - continue; - } - readDocid(&m->in); - } - /* We have a document match. */ - if( m->in.pDoclist==NULL || m->in.pDoclist->iType < DL_POSITIONS ){ - /* We don't need to do a poslist merge. */ - docListAddDocid(m->pOut, iDocid); - if( m->pOut->iType >= DL_POSITIONS ){ - /* Copy all positions to the output doclist. */ - while( 1 ){ - int pos = readPosition(&blockReader); - if( pos==-1 ) break; - docListAddPos(m->pOut, pos); - } - docListAddEndPos(m->pOut); - } else skipPositionList(&blockReader); - continue; - } - mergePosList(m, iDocid, &blockReader); - } -} - -static char *string_dup_n(const char *s, int n){ - char *str = malloc(n + 1); - memcpy(str, s, n); - str[n] = '\0'; - return str; -} - -/* Duplicate a string; the caller must free() the returned string. - * (We don't use strdup() since it's not part of the standard C library and - * may not be available everywhere.) */ -static char *string_dup(const char *s){ - return string_dup_n(s, strlen(s)); -} - -/* Format a string, replacing each occurrence of the % character with - * zName. This may be more convenient than sqlite_mprintf() - * when one string is used repeatedly in a format string. - * The caller must free() the returned string. */ -static char *string_format(const char *zFormat, const char *zName){ - const char *p; - size_t len = 0; - size_t nName = strlen(zName); - char *result; - char *r; - - /* first compute length needed */ - for(p = zFormat ; *p ; ++p){ - len += (*p=='%' ? nName : 1); - } - len += 1; /* for null terminator */ - - r = result = malloc(len); - for(p = zFormat; *p; ++p){ - if( *p=='%' ){ - memcpy(r, zName, nName); - r += nName; - } else { - *r++ = *p; - } - } - *r++ = '\0'; - assert( r == result + len ); - return result; -} - -static int sql_exec(sqlite3 *db, const char *zName, const char *zFormat){ - char *zCommand = string_format(zFormat, zName); - int rc = sqlite3_exec(db, zCommand, NULL, 0, NULL); - free(zCommand); - return rc; -} - -static int sql_prepare(sqlite3 *db, const char *zName, sqlite3_stmt **ppStmt, - const char *zFormat){ - char *zCommand = string_format(zFormat, zName); - int rc = sqlite3_prepare(db, zCommand, -1, ppStmt, NULL); - free(zCommand); - return rc; -} - -/* end utility functions */ - -#define QUERY_GENERIC 0 -#define QUERY_FULLTEXT 1 - -#define CHUNK_MAX 1024 - -typedef enum fulltext_statement { - CONTENT_INSERT_STMT, - CONTENT_SELECT_STMT, - CONTENT_DELETE_STMT, - - TERM_SELECT_STMT, - TERM_CHUNK_SELECT_STMT, - TERM_INSERT_STMT, - TERM_UPDATE_STMT, - TERM_DELETE_STMT, - - MAX_STMT /* Always at end! */ -} fulltext_statement; - -/* These must exactly match the enum above. */ -/* TODO(adam): Is there some risk that a statement (in particular, -** pTermSelectStmt) will be used in two cursors at once, e.g. if a -** query joins a virtual table to itself? If so perhaps we should -** move some of these to the cursor object. -*/ -static const char *fulltext_zStatement[MAX_STMT] = { - /* CONTENT_INSERT */ "insert into %_content (rowid, content) values (?, ?)", - /* CONTENT_SELECT */ "select content from %_content where rowid = ?", - /* CONTENT_DELETE */ "delete from %_content where rowid = ?", - - /* TERM_SELECT */ - "select rowid, doclist from %_term where term = ? and first = ?", - /* TERM_CHUNK_SELECT */ - "select max(first) from %_term where term = ? and first <= ?", - /* TERM_INSERT */ - "insert into %_term (term, first, doclist) values (?, ?, ?)", - /* TERM_UPDATE */ "update %_term set doclist = ? where rowid = ?", - /* TERM_DELETE */ "delete from %_term where rowid = ?", -}; - -typedef struct fulltext_vtab { - sqlite3_vtab base; - sqlite3 *db; - const char *zName; /* virtual table name */ - sqlite3_tokenizer *pTokenizer; /* tokenizer for inserts and queries */ - - /* Precompiled statements which we keep as long as the table is - ** open. - */ - sqlite3_stmt *pFulltextStatements[MAX_STMT]; -} fulltext_vtab; - -typedef struct fulltext_cursor { - sqlite3_vtab_cursor base; - int iCursorType; /* QUERY_GENERIC or QUERY_FULLTEXT */ - - sqlite3_stmt *pStmt; - - int eof; - - /* The following is used only when iCursorType == QUERY_FULLTEXT. */ - DocListReader result; -} fulltext_cursor; - -static struct fulltext_vtab *cursor_vtab(fulltext_cursor *c){ - return (fulltext_vtab *) c->base.pVtab; -} - -static sqlite3_module fulltextModule; /* forward declaration */ - -/* Puts a freshly-prepared statement determined by iStmt in *ppStmt. -** If the indicated statement has never been prepared, it is prepared -** and cached, otherwise the cached version is reset. -*/ -static int sql_get_statement(fulltext_vtab *v, fulltext_statement iStmt, - sqlite3_stmt **ppStmt){ - assert( iStmtpFulltextStatements[iStmt]==NULL ){ - int rc = sql_prepare(v->db, v->zName, &v->pFulltextStatements[iStmt], - fulltext_zStatement[iStmt]); - if( rc!=SQLITE_OK ) return rc; - } else { - int rc = sqlite3_reset(v->pFulltextStatements[iStmt]); - if( rc!=SQLITE_OK ) return rc; - } - - *ppStmt = v->pFulltextStatements[iStmt]; - return SQLITE_OK; -} - -/* Step the indicated statement, handling errors SQLITE_BUSY (by -** retrying) and SQLITE_SCHEMA (by re-preparing and transferring -** bindings to the new statement). -** TODO(adam): We should extend this function so that it can work with -** statements declared locally, not only globally cached statements. -*/ -static int sql_step_statement(fulltext_vtab *v, fulltext_statement iStmt, - sqlite3_stmt **ppStmt){ - int rc; - sqlite3_stmt *s = *ppStmt; - assert( iStmtpFulltextStatements[iStmt] ); - - while( (rc=sqlite3_step(s))!=SQLITE_DONE && rc!=SQLITE_ROW ){ - sqlite3_stmt *pNewStmt; - - if( rc==SQLITE_BUSY ) continue; - if( rc!=SQLITE_ERROR ) return rc; - - rc = sqlite3_reset(s); - if( rc!=SQLITE_SCHEMA ) return SQLITE_ERROR; - - v->pFulltextStatements[iStmt] = NULL; /* Still in s */ - rc = sql_get_statement(v, iStmt, &pNewStmt); - if( rc!=SQLITE_OK ) goto err; - *ppStmt = pNewStmt; - - rc = sqlite3_transfer_bindings(s, pNewStmt); - if( rc!=SQLITE_OK ) goto err; - - rc = sqlite3_finalize(s); - if( rc!=SQLITE_OK ) return rc; - s = pNewStmt; - } - return rc; - - err: - sqlite3_finalize(s); - return rc; -} - -/* Like sql_step_statement(), but convert SQLITE_DONE to SQLITE_OK. -** Useful for statements like UPDATE, where we expect no results. -*/ -static int sql_single_step_statement(fulltext_vtab *v, - fulltext_statement iStmt, - sqlite3_stmt **ppStmt){ - int rc = sql_step_statement(v, iStmt, ppStmt); - return (rc==SQLITE_DONE) ? SQLITE_OK : rc; -} - -/* insert into %_content (rowid, content) values ([rowid], [zContent]) */ -static int content_insert(fulltext_vtab *v, sqlite3_value *rowid, - const char *zContent, int nContent){ - sqlite3_stmt *s; - int rc = sql_get_statement(v, CONTENT_INSERT_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_value(s, 1, rowid); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_text(s, 2, zContent, nContent, SQLITE_STATIC); - if( rc!=SQLITE_OK ) return rc; - - return sql_single_step_statement(v, CONTENT_INSERT_STMT, &s); -} - -/* select content from %_content where rowid = [iRow] - * The caller must delete the returned string. */ -static int content_select(fulltext_vtab *v, sqlite_int64 iRow, - char **pzContent){ - sqlite3_stmt *s; - int rc = sql_get_statement(v, CONTENT_SELECT_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int64(s, 1, iRow); - if( rc!=SQLITE_OK ) return rc; - - rc = sql_step_statement(v, CONTENT_SELECT_STMT, &s); - if( rc!=SQLITE_ROW ) return rc; - - *pzContent = string_dup((const char *)sqlite3_column_text(s, 0)); - - /* We expect only one row. We must execute another sqlite3_step() - * to complete the iteration; otherwise the table will remain locked. */ - rc = sqlite3_step(s); - if( rc==SQLITE_DONE ) return SQLITE_OK; - - free(*pzContent); - return rc; -} - -/* delete from %_content where rowid = [iRow ] */ -static int content_delete(fulltext_vtab *v, sqlite_int64 iRow){ - sqlite3_stmt *s; - int rc = sql_get_statement(v, CONTENT_DELETE_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int64(s, 1, iRow); - if( rc!=SQLITE_OK ) return rc; - - return sql_single_step_statement(v, CONTENT_DELETE_STMT, &s); -} - -/* select rowid, doclist from %_term where term = [zTerm] and first = [iFirst] - * If found, returns SQLITE_OK; the caller must free the returned doclist. - * If no rows found, returns SQLITE_ERROR. */ -static int term_select(fulltext_vtab *v, const char *zTerm, int nTerm, - sqlite_int64 iFirst, - sqlite_int64 *rowid, - DocList *out){ - sqlite3_stmt *s; - int rc = sql_get_statement(v, TERM_SELECT_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_text(s, 1, zTerm, nTerm, SQLITE_TRANSIENT); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int64(s, 2, iFirst); - if( rc!=SQLITE_OK ) return rc; - - rc = sql_step_statement(v, TERM_SELECT_STMT, &s); - if( rc!=SQLITE_ROW ) return rc==SQLITE_DONE ? SQLITE_ERROR : rc; - - *rowid = sqlite3_column_int64(s, 0); - docListInit(out, DL_POSITIONS_OFFSETS, - sqlite3_column_blob(s, 1), sqlite3_column_bytes(s, 1)); - - /* We expect only one row. We must execute another sqlite3_step() - * to complete the iteration; otherwise the table will remain locked. */ - rc = sqlite3_step(s); - return rc==SQLITE_DONE ? SQLITE_OK : rc; -} - -/* select max(first) from %_term where term = [zTerm] and first <= [iFirst] - * If found, returns SQLITE_ROW and result in *piResult; if the query returns - * NULL (meaning no row found) returns SQLITE_DONE. - */ -static int term_chunk_select(fulltext_vtab *v, const char *zTerm, int nTerm, - sqlite_int64 iFirst, sqlite_int64 *piResult){ - sqlite3_stmt *s; - int rc = sql_get_statement(v, TERM_CHUNK_SELECT_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_text(s, 1, zTerm, nTerm, SQLITE_STATIC); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int64(s, 2, iFirst); - if( rc!=SQLITE_OK ) return rc; - - rc = sql_step_statement(v, TERM_CHUNK_SELECT_STMT, &s); - if( rc!=SQLITE_ROW ) return rc==SQLITE_DONE ? SQLITE_ERROR : rc; - - switch( sqlite3_column_type(s, 0) ){ - case SQLITE_NULL: - rc = SQLITE_DONE; - break; - case SQLITE_INTEGER: - *piResult = sqlite3_column_int64(s, 0); - break; - default: - return SQLITE_ERROR; - } - /* We expect only one row. We must execute another sqlite3_step() - * to complete the iteration; otherwise the table will remain locked. */ - if( sqlite3_step(s) != SQLITE_DONE ) return SQLITE_ERROR; - return rc; -} - -/* insert into %_term (term, first, doclist) - values ([zTerm], [iFirst], [doclist]) */ -static int term_insert(fulltext_vtab *v, const char *zTerm, int nTerm, - sqlite_int64 iFirst, DocList *doclist){ - sqlite3_stmt *s; - int rc = sql_get_statement(v, TERM_INSERT_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_text(s, 1, zTerm, nTerm, SQLITE_STATIC); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int64(s, 2, iFirst); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_blob(s, 3, doclist->pData, doclist->nData, SQLITE_STATIC); - if( rc!=SQLITE_OK ) return rc; - - return sql_single_step_statement(v, TERM_INSERT_STMT, &s); -} - -/* update %_term set doclist = [doclist] where rowid = [rowid] */ -static int term_update(fulltext_vtab *v, sqlite_int64 rowid, - DocList *doclist){ - sqlite3_stmt *s; - int rc = sql_get_statement(v, TERM_UPDATE_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_blob(s, 1, doclist->pData, doclist->nData, - SQLITE_STATIC); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int64(s, 2, rowid); - if( rc!=SQLITE_OK ) return rc; - - return sql_single_step_statement(v, TERM_UPDATE_STMT, &s); -} - -static int term_delete(fulltext_vtab *v, sqlite_int64 rowid){ - sqlite3_stmt *s; - int rc = sql_get_statement(v, TERM_DELETE_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int64(s, 1, rowid); - if( rc!=SQLITE_OK ) return rc; - - return sql_single_step_statement(v, TERM_DELETE_STMT, &s); -} - -static void fulltext_vtab_destroy(fulltext_vtab *v){ - int iStmt; - - for( iStmt=0; iStmtpFulltextStatements[iStmt]!=NULL ){ - sqlite3_finalize(v->pFulltextStatements[iStmt]); - v->pFulltextStatements[iStmt] = NULL; - } - } - - if( v->pTokenizer!=NULL ){ - v->pTokenizer->pModule->xDestroy(v->pTokenizer); - v->pTokenizer = NULL; - } - - free((void *) v->zName); - free(v); -} - -/* Current interface: -** argv[0] - module name -** argv[1] - database name -** argv[2] - table name -** argv[3] - tokenizer name (optional, a sensible default is provided) -** argv[4..] - passed to tokenizer (optional based on tokenizer) -**/ -static int fulltextConnect(sqlite3 *db, void *pAux, int argc, char **argv, - sqlite3_vtab **ppVTab){ - int rc; - fulltext_vtab *v; - sqlite3_tokenizer_module *m = NULL; - - assert( argc>=3 ); - v = (fulltext_vtab *) malloc(sizeof(fulltext_vtab)); - /* sqlite will initialize v->base */ - v->db = db; - v->zName = string_dup(argv[2]); - v->pTokenizer = NULL; - - if( argc==3 ){ - get_simple_tokenizer_module(&m); - } else { - /* TODO(shess) For now, add new tokenizers as else if clauses. */ - if( !strcmp(argv[3], "simple") ){ - get_simple_tokenizer_module(&m); - } else { - assert( "unrecognized tokenizer"==NULL ); - } - } - - /* TODO(shess) Since tokenization impacts the index, the parameters - ** to the tokenizer need to be identical when a persistent virtual - ** table is re-created. One solution would be a meta-table to track - ** such information in the database. Then we could verify that the - ** information is identical on subsequent creates. - */ - /* TODO(shess) Why isn't argv already (const char **)? */ - rc = m->xCreate(argc-3, (const char **) (argv+3), &v->pTokenizer); - if( rc!=SQLITE_OK ) return rc; - v->pTokenizer->pModule = m; - - /* TODO: verify the existence of backing tables foo_content, foo_term */ - - rc = sqlite3_declare_vtab(db, "create table x(content text)"); - if( rc!=SQLITE_OK ) return rc; - - memset(v->pFulltextStatements, 0, sizeof(v->pFulltextStatements)); - - *ppVTab = &v->base; - return SQLITE_OK; -} - -static int fulltextCreate(sqlite3 *db, void *pAux, int argc, char **argv, - sqlite3_vtab **ppVTab){ - int rc; - assert( argc>=3 ); - - /* The %_content table holds the text of each full-text item, with - ** the rowid used as the docid. - ** - ** The %_term table maps each term to a document list blob - ** containing elements sorted by ascending docid, each element - ** encoded as: - ** - ** docid varint-encoded - ** token count varint-encoded - ** "count" token elements (poslist): - ** position varint-encoded as delta from previous position - ** start offset varint-encoded as delta from previous start offset - ** end offset varint-encoded as delta from start offset - ** - ** Additionally, doclist blobs can be chunked into multiple rows, - ** using "first" to order the blobs. "first" is simply the first - ** docid in the blob. - */ - /* - ** NOTE(shess) That last sentence is incorrect in the face of - ** deletion, which can leave a doclist that doesn't contain the - ** first from that row. I _believe_ this does not matter to the - ** operation of the system, but it might be reasonable to update - ** appropriately in case this assumption becomes more important. - */ - rc = sql_exec(db, argv[2], - "create table %_content(content text);" - "create table %_term(term text, first integer, doclist blob);" - "create index %_index on %_term(term, first)"); - if( rc!=SQLITE_OK ) return rc; - - return fulltextConnect(db, pAux, argc, argv, ppVTab); -} - -/* Decide how to handle an SQL query. - * At the moment, MATCH queries can include implicit boolean ANDs; we - * haven't implemented phrase searches or OR yet. */ -static int fulltextBestIndex(sqlite3_vtab *pVTab, sqlite3_index_info *pInfo){ - int i; - - for(i=0; inConstraint; ++i){ - const struct sqlite3_index_constraint *pConstraint; - pConstraint = &pInfo->aConstraint[i]; - if( pConstraint->iColumn==0 && - pConstraint->op==SQLITE_INDEX_CONSTRAINT_MATCH && - pConstraint->usable ){ /* a full-text search */ - pInfo->aConstraintUsage[i].argvIndex = 1; - pInfo->aConstraintUsage[i].omit = 1; - pInfo->idxNum = QUERY_FULLTEXT; - pInfo->estimatedCost = 1.0; /* an arbitrary value for now */ - return SQLITE_OK; - } - } - pInfo->idxNum = QUERY_GENERIC; - return SQLITE_OK; -} - -static int fulltextDisconnect(sqlite3_vtab *pVTab){ - fulltext_vtab_destroy((fulltext_vtab *)pVTab); - return SQLITE_OK; -} - -static int fulltextDestroy(sqlite3_vtab *pVTab){ - fulltext_vtab *v = (fulltext_vtab *)pVTab; - - int rc = sql_exec(v->db, v->zName, - "drop table %_content; drop table %_term"); - if( rc!=SQLITE_OK ) return rc; - - fulltext_vtab_destroy((fulltext_vtab *)pVTab); - return SQLITE_OK; -} - -static int fulltextOpen(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor){ - fulltext_cursor *c; - - c = (fulltext_cursor *) calloc(sizeof(fulltext_cursor), 1); - /* sqlite will initialize c->base */ - *ppCursor = &c->base; - - return SQLITE_OK; -} - -static int fulltextClose(sqlite3_vtab_cursor *pCursor){ - fulltext_cursor *c = (fulltext_cursor *) pCursor; - sqlite3_finalize(c->pStmt); - if( c->result.pDoclist!=NULL ){ - docListDelete(c->result.pDoclist); - } - free(c); - return SQLITE_OK; -} - -static int fulltextNext(sqlite3_vtab_cursor *pCursor){ - fulltext_cursor *c = (fulltext_cursor *) pCursor; - sqlite_int64 iDocid; - int rc; - - switch( c->iCursorType ){ - case QUERY_GENERIC: - /* TODO(shess) Handle SQLITE_SCHEMA AND SQLITE_BUSY. */ - rc = sqlite3_step(c->pStmt); - switch( rc ){ - case SQLITE_ROW: - c->eof = 0; - return SQLITE_OK; - case SQLITE_DONE: - c->eof = 1; - return SQLITE_OK; - default: - c->eof = 1; - return rc; - } - case QUERY_FULLTEXT: - rc = sqlite3_reset(c->pStmt); - if( rc!=SQLITE_OK ) return rc; - - if( readerAtEnd(&c->result)){ - c->eof = 1; - return SQLITE_OK; - } - iDocid = readDocid(&c->result); - rc = sqlite3_bind_int64(c->pStmt, 1, iDocid); - if( rc!=SQLITE_OK ) return rc; - /* TODO(shess) Handle SQLITE_SCHEMA AND SQLITE_BUSY. */ - rc = sqlite3_step(c->pStmt); - if( rc==SQLITE_ROW ){ /* the case we expect */ - c->eof = 0; - return SQLITE_OK; - } - /* an error occurred; abort */ - return rc==SQLITE_DONE ? SQLITE_ERROR : rc; - default: - assert( 0 ); - return SQLITE_ERROR; /* not reached */ - } -} - -static int term_select_doclist(fulltext_vtab *v, const char *pTerm, int nTerm, - sqlite3_stmt **ppStmt){ - int rc; - if( *ppStmt ){ - rc = sqlite3_reset(*ppStmt); - } else { - rc = sql_prepare(v->db, v->zName, ppStmt, - "select doclist from %_term where term = ? order by first"); - } - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_text(*ppStmt, 1, pTerm, nTerm, SQLITE_TRANSIENT); - if( rc!=SQLITE_OK ) return rc; - - return sqlite3_step(*ppStmt); /* TODO(adamd): handle schema error */ -} - -/* Read the posting list for [zTerm]; AND it with the doclist [in] to - * produce the doclist [out], using the given offset [iOffset] for phrase - * matching. - * (*pSelect) is used to hold an SQLite statement used inside this function; - * the caller should initialize *pSelect to NULL before the first call. - */ -static int query_merge(fulltext_vtab *v, sqlite3_stmt **pSelect, - const char *zTerm, - DocList *pIn, int iOffset, DocList *out){ - int rc; - DocListMerge merge; - - if( pIn!=NULL && !pIn->nData ){ - /* If [pIn] is already empty, there's no point in reading the - * posting list to AND it in; return immediately. */ - return SQLITE_OK; - } - - rc = term_select_doclist(v, zTerm, -1, pSelect); - if( rc!=SQLITE_ROW && rc!=SQLITE_DONE ) return rc; - - mergeInit(&merge, pIn, iOffset, out); - while( rc==SQLITE_ROW ){ - DocList block; - docListInit(&block, DL_POSITIONS_OFFSETS, - sqlite3_column_blob(*pSelect, 0), - sqlite3_column_bytes(*pSelect, 0)); - mergeBlock(&merge, &block); - docListDestroy(&block); - - rc = sqlite3_step(*pSelect); - if( rc!=SQLITE_ROW && rc!=SQLITE_DONE ){ - return rc; - } - } - - return SQLITE_OK; -} - -typedef struct QueryTerm { - int is_phrase; /* true if this term begins a new phrase */ - const char *zTerm; -} QueryTerm; - -/* A parsed query. - * - * As an example, parsing the query ["four score" years "new nation"] will - * yield a Query with 5 terms: - * "four", is_phrase = 1 - * "score", is_phrase = 0 - * "years", is_phrase = 1 - * "new", is_phrase = 1 - * "nation", is_phrase = 0 - */ -typedef struct Query { - int nTerms; - QueryTerm *pTerm; -} Query; - -static void query_add(Query *q, int is_phrase, const char *zTerm){ - QueryTerm *t; - ++q->nTerms; - q->pTerm = realloc(q->pTerm, q->nTerms * sizeof(q->pTerm[0])); - t = &q->pTerm[q->nTerms - 1]; - t->is_phrase = is_phrase; - t->zTerm = zTerm; -} - -static void query_free(Query *q){ - int i; - for(i = 0; i < q->nTerms; ++i){ - free((void *) q->pTerm[i].zTerm); - } - free(q->pTerm); -} - -static int tokenize_segment(sqlite3_tokenizer *pTokenizer, - const char *zQuery, int in_phrase, - Query *pQuery){ - sqlite3_tokenizer_module *pModule = pTokenizer->pModule; - sqlite3_tokenizer_cursor *pCursor; - int is_first = 1; - - int rc = pModule->xOpen(pTokenizer, zQuery, -1, &pCursor); - if( rc!=SQLITE_OK ) return rc; - pCursor->pTokenizer = pTokenizer; - - while( 1 ){ - const char *zToken; - int nToken, iStartOffset, iEndOffset, dummy_pos; - - rc = pModule->xNext(pCursor, - &zToken, &nToken, - &iStartOffset, &iEndOffset, - &dummy_pos); - if( rc!=SQLITE_OK ) break; - query_add(pQuery, !in_phrase || is_first, string_dup_n(zToken, nToken)); - is_first = 0; - } - - return pModule->xClose(pCursor); -} - -/* Parse a query string, yielding a Query object. */ -static int parse_query(fulltext_vtab *v, const char *zQuery, Query *pQuery){ - char *zQuery1 = string_dup(zQuery); - int in_phrase = 0; - char *s = zQuery1; - pQuery->nTerms = 0; - pQuery->pTerm = NULL; - - while( *s ){ - char *t = s; - while( *t ){ - if( *t=='"' ){ - *t++ = '\0'; - break; - } - ++t; - } - if( *s ){ - tokenize_segment(v->pTokenizer, s, in_phrase, pQuery); - } - s = t; - in_phrase = !in_phrase; - } - - free(zQuery1); - return SQLITE_OK; -} - -/* Perform a full-text query; return a list of documents in [pResult]. */ -static int fulltext_query(fulltext_vtab *v, const char *zQuery, - DocList **pResult){ - Query q; - int phrase_start = -1; - int i; - sqlite3_stmt *pSelect = NULL; - DocList *d = NULL; - - int rc = parse_query(v, zQuery, &q); - if( rc!=SQLITE_OK ) return rc; - - /* Merge terms. */ - for(i = 0 ; i < q.nTerms ; ++i){ - /* In each merge step, we need to generate positions whenever we're - * processing a phrase which hasn't ended yet. */ - int need_positions = iiCursorType = idxNum; - switch( idxNum ){ - case QUERY_GENERIC: - zStatement = "select rowid, content from %_content"; - break; - - case QUERY_FULLTEXT: /* full-text search */ - { - const char *zQuery = (const char *)sqlite3_value_text(argv[0]); - DocList *pResult; - assert( argc==1 ); - rc = fulltext_query(v, zQuery, &pResult); - if( rc!=SQLITE_OK ) return rc; - readerInit(&c->result, pResult); - zStatement = "select rowid, content from %_content where rowid = ?"; - break; - } - - default: - assert( 0 ); - } - - rc = sql_prepare(v->db, v->zName, &c->pStmt, zStatement); - if( rc!=SQLITE_OK ) return rc; - - return fulltextNext(pCursor); -} - -static int fulltextEof(sqlite3_vtab_cursor *pCursor){ - fulltext_cursor *c = (fulltext_cursor *) pCursor; - return c->eof; -} - -static int fulltextColumn(sqlite3_vtab_cursor *pCursor, - sqlite3_context *pContext, int idxCol){ - fulltext_cursor *c = (fulltext_cursor *) pCursor; - const char *s; - - assert( idxCol==0 ); - s = (const char *) sqlite3_column_text(c->pStmt, 1); - sqlite3_result_text(pContext, s, -1, SQLITE_TRANSIENT); - - return SQLITE_OK; -} - -static int fulltextRowid(sqlite3_vtab_cursor *pCursor, sqlite_int64 *pRowid){ - fulltext_cursor *c = (fulltext_cursor *) pCursor; - - *pRowid = sqlite3_column_int64(c->pStmt, 0); - return SQLITE_OK; -} - -/* Build a hash table containing all terms in zText. */ -static int build_terms(Hash *terms, sqlite3_tokenizer *pTokenizer, - const char *zText, sqlite_int64 iDocid){ - sqlite3_tokenizer_cursor *pCursor; - const char *pToken; - int nTokenBytes; - int iStartOffset, iEndOffset, iPosition; - - int rc = pTokenizer->pModule->xOpen(pTokenizer, zText, -1, &pCursor); - if( rc!=SQLITE_OK ) return rc; - - pCursor->pTokenizer = pTokenizer; - HashInit(terms, HASH_STRING, 1); - while( SQLITE_OK==pTokenizer->pModule->xNext(pCursor, - &pToken, &nTokenBytes, - &iStartOffset, &iEndOffset, - &iPosition) ){ - DocList *p; - - /* Positions can't be negative; we use -1 as a terminator internally. */ - if( iPosition<0 ) { - rc = SQLITE_ERROR; - goto err; - } - - p = HashFind(terms, pToken, nTokenBytes); - if( p==NULL ){ - p = docListNew(DL_POSITIONS_OFFSETS); - docListAddDocid(p, iDocid); - HashInsert(terms, pToken, nTokenBytes, p); - } - docListAddPosOffset(p, iPosition, iStartOffset, iEndOffset); - } - -err: - /* TODO(shess) Check return? Should this be able to cause errors at - ** this point? Actually, same question about sqlite3_finalize(), - ** though one could argue that failure there means that the data is - ** not durable. *ponder* - */ - pTokenizer->pModule->xClose(pCursor); - return rc; -} -/* Update the %_terms table to map the term [zTerm] to the given rowid. */ -static int index_insert_term(fulltext_vtab *v, const char *zTerm, int nTerm, - sqlite_int64 iDocid, DocList *p){ - sqlite_int64 iFirst; - sqlite_int64 iIndexRow; - DocList doclist; - - int rc = term_chunk_select(v, zTerm, nTerm, iDocid, &iFirst); - if( rc==SQLITE_DONE ){ - docListInit(&doclist, DL_POSITIONS_OFFSETS, 0, 0); - if( docListUpdate(&doclist, iDocid, p) ){ - rc = term_insert(v, zTerm, nTerm, iDocid, &doclist); - docListDestroy(&doclist); - return rc; - } - return SQLITE_OK; - } - if( rc!=SQLITE_ROW ) return SQLITE_ERROR; - - /* This word is in the index; add this document ID to its blob. */ - - rc = term_select(v, zTerm, nTerm, iFirst, &iIndexRow, &doclist); - if( rc!=SQLITE_OK ) return rc; - - if( docListUpdate(&doclist, iDocid, p) ){ - /* If the blob is too big, split it in half. */ - if( doclist.nData>CHUNK_MAX ){ - DocList half; - if( docListSplit(&doclist, &half) ){ - rc = term_insert(v, zTerm, nTerm, firstDocid(&half), &half); - docListDestroy(&half); - if( rc!=SQLITE_OK ) goto err; - } - } - rc = term_update(v, iIndexRow, &doclist); - } - -err: - docListDestroy(&doclist); - return rc; -} - -/* Insert a row into the full-text index; set *piRowid to be the ID of the - * new row. */ -static int index_insert(fulltext_vtab *v, - sqlite3_value *pRequestRowid, const char *zText, - sqlite_int64 *piRowid){ - Hash terms; /* maps term string -> PosList */ - HashElem *e; - - int rc = content_insert(v, pRequestRowid, zText, -1); - if( rc!=SQLITE_OK ) return rc; - *piRowid = sqlite3_last_insert_rowid(v->db); - - if( !zText ) return SQLITE_OK; /* nothing to index */ - - rc = build_terms(&terms, v->pTokenizer, zText, *piRowid); - if( rc!=SQLITE_OK ) return rc; - - for(e=HashFirst(&terms); e; e=HashNext(e)){ - DocList *p = HashData(e); - rc = index_insert_term(v, HashKey(e), HashKeysize(e), *piRowid, p); - if( rc!=SQLITE_OK ) break; - } - - for(e=HashFirst(&terms); e; e=HashNext(e)){ - DocList *p = HashData(e); - docListDelete(p); - } - HashClear(&terms); - return rc; -} - -static int index_delete_term(fulltext_vtab *v, const char *zTerm, int nTerm, - sqlite_int64 iDocid){ - sqlite_int64 iFirst; - sqlite_int64 iIndexRow; - DocList doclist; - - int rc = term_chunk_select(v, zTerm, nTerm, iDocid, &iFirst); - if( rc!=SQLITE_ROW ) return SQLITE_ERROR; - - rc = term_select(v, zTerm, nTerm, iFirst, &iIndexRow, &doclist); - if( rc!=SQLITE_OK ) return rc; - - if( docListUpdate(&doclist, iDocid, NULL) ){ - if( doclist.nData>0 ){ - rc = term_update(v, iIndexRow, &doclist); - } else { /* empty posting list */ - rc = term_delete(v, iIndexRow); - } - } - docListDestroy(&doclist); - return rc; -} - -/* Delete a row from the full-text index. */ -static int index_delete(fulltext_vtab *v, sqlite_int64 iRow){ - char *zText; - Hash terms; - HashElem *e; - - int rc = content_select(v, iRow, &zText); - if( rc!=SQLITE_OK ) return rc; - - rc = build_terms(&terms, v->pTokenizer, zText, iRow); - free(zText); - if( rc!=SQLITE_OK ) return rc; - - for(e=HashFirst(&terms); e; e=HashNext(e)){ - rc = index_delete_term(v, HashKey(e), HashKeysize(e), iRow); - if( rc!=SQLITE_OK ) break; - } - for(e=HashFirst(&terms); e; e=HashNext(e)){ - DocList *p = HashData(e); - docListDelete(p); - } - HashClear(&terms); - - return content_delete(v, iRow); -} - -static int fulltextUpdate(sqlite3_vtab *pVtab, int nArg, sqlite3_value **ppArg, - sqlite_int64 *pRowid){ - fulltext_vtab *v = (fulltext_vtab *) pVtab; - - if( nArg<2 ){ - return index_delete(v, sqlite3_value_int64(ppArg[0])); - } - - if( sqlite3_value_type(ppArg[0]) != SQLITE_NULL ){ - return SQLITE_ERROR; /* an update; not yet supported */ - } - - assert( nArg==3 ); /* ppArg[1] = rowid, ppArg[2] = content */ - return index_insert(v, ppArg[1], - (const char *)sqlite3_value_text(ppArg[2]), pRowid); -} - -static sqlite3_module fulltextModule = { - 0, - fulltextCreate, - fulltextConnect, - fulltextBestIndex, - fulltextDisconnect, - fulltextDestroy, - fulltextOpen, - fulltextClose, - fulltextFilter, - fulltextNext, - fulltextEof, - fulltextColumn, - fulltextRowid, - fulltextUpdate -}; - -int fulltext_init(sqlite3 *db){ - return sqlite3_create_module(db, "fulltext", &fulltextModule, 0); -} - -#if !SQLITE_CORE -int sqlite3_extension_init(sqlite3 *db, char **pzErrMsg, - const sqlite3_api_routines *pApi){ - SQLITE_EXTENSION_INIT2(pApi) - return fulltext_init(db); -} -#endif diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/fulltext.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/fulltext.h deleted file mode 100644 index 391bf8a14f..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/fulltext.h +++ /dev/null @@ -1,11 +0,0 @@ -#include "sqlite3.h" - -#ifdef __cplusplus -extern "C" { -#endif /* __cplusplus */ - -int fulltext_init(sqlite3 *db); - -#ifdef __cplusplus -} /* extern "C" */ -#endif /* __cplusplus */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/simple_tokenizer.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/simple_tokenizer.c deleted file mode 100644 index 315b74e0d3..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/simple_tokenizer.c +++ /dev/null @@ -1,174 +0,0 @@ -/* -** The author disclaims copyright to this source code. -** -************************************************************************* -** Implementation of the "simple" full-text-search tokenizer. -*/ - -#include -#if !defined(__APPLE__) -#include -#else -#include -#endif -#include -#include -#include - -#include "tokenizer.h" - -/* Duplicate a string; the caller must free() the returned string. - * (We don't use strdup() since it's not part of the standard C library and - * may not be available everywhere.) */ -/* TODO(shess) Copied from fulltext.c, consider util.c for such -** things. */ -static char *string_dup(const char *s){ - char *str = malloc(strlen(s) + 1); - strcpy(str, s); - return str; -} - -typedef struct simple_tokenizer { - sqlite3_tokenizer base; - const char *zDelim; /* token delimiters */ -} simple_tokenizer; - -typedef struct simple_tokenizer_cursor { - sqlite3_tokenizer_cursor base; - const char *pInput; /* input we are tokenizing */ - int nBytes; /* size of the input */ - const char *pCurrent; /* current position in pInput */ - int iToken; /* index of next token to be returned */ - char *zToken; /* storage for current token */ - int nTokenBytes; /* actual size of current token */ - int nTokenAllocated; /* space allocated to zToken buffer */ -} simple_tokenizer_cursor; - -static sqlite3_tokenizer_module simpleTokenizerModule;/* forward declaration */ - -static int simpleCreate( - int argc, const char **argv, - sqlite3_tokenizer **ppTokenizer -){ - simple_tokenizer *t; - - t = (simple_tokenizer *) malloc(sizeof(simple_tokenizer)); - /* TODO(shess) Delimiters need to remain the same from run to run, - ** else we need to reindex. One solution would be a meta-table to - ** track such information in the database, then we'd only want this - ** information on the initial create. - */ - if( argc>1 ){ - t->zDelim = string_dup(argv[1]); - } else { - /* Build a string excluding alphanumeric ASCII characters */ - char zDelim[0x80]; /* nul-terminated, so nul not a member */ - int i, j; - for(i=1, j=0; i<0x80; i++){ - if( !isalnum(i) ){ - zDelim[j++] = i; - } - } - zDelim[j++] = '\0'; - assert( j<=sizeof(zDelim) ); - t->zDelim = string_dup(zDelim); - } - - *ppTokenizer = &t->base; - return SQLITE_OK; -} - -static int simpleDestroy(sqlite3_tokenizer *pTokenizer){ - simple_tokenizer *t = (simple_tokenizer *) pTokenizer; - - free((void *) t->zDelim); - free(t); - - return SQLITE_OK; -} - -static int simpleOpen( - sqlite3_tokenizer *pTokenizer, - const char *pInput, int nBytes, - sqlite3_tokenizer_cursor **ppCursor -){ - simple_tokenizer_cursor *c; - - c = (simple_tokenizer_cursor *) malloc(sizeof(simple_tokenizer_cursor)); - c->pInput = pInput; - c->nBytes = nBytes<0 ? (int) strlen(pInput) : nBytes; - c->pCurrent = c->pInput; /* start tokenizing at the beginning */ - c->iToken = 0; - c->zToken = NULL; /* no space allocated, yet. */ - c->nTokenBytes = 0; - c->nTokenAllocated = 0; - - *ppCursor = &c->base; - return SQLITE_OK; -} - -static int simpleClose(sqlite3_tokenizer_cursor *pCursor){ - simple_tokenizer_cursor *c = (simple_tokenizer_cursor *) pCursor; - - if( NULL!=c->zToken ){ - free(c->zToken); - } - free(c); - - return SQLITE_OK; -} - -static int simpleNext( - sqlite3_tokenizer_cursor *pCursor, - const char **ppToken, int *pnBytes, - int *piStartOffset, int *piEndOffset, int *piPosition -){ - simple_tokenizer_cursor *c = (simple_tokenizer_cursor *) pCursor; - simple_tokenizer *t = (simple_tokenizer *) pCursor->pTokenizer; - int ii; - - while( c->pCurrent-c->pInputnBytes ){ - int n = (int) strcspn(c->pCurrent, t->zDelim); - if( n>0 ){ - if( n+1>c->nTokenAllocated ){ - c->zToken = realloc(c->zToken, n+1); - } - for(ii=0; iipCurrent[ii]; - c->zToken[ii] = (unsigned char)ch<0x80 ? tolower(ch) : ch; - } - c->zToken[n] = '\0'; - *ppToken = c->zToken; - *pnBytes = n; - *piStartOffset = (int) (c->pCurrent-c->pInput); - *piEndOffset = *piStartOffset+n; - *piPosition = c->iToken++; - c->pCurrent += n + 1; - - return SQLITE_OK; - } - c->pCurrent += n + 1; - /* TODO(shess) could strspn() to skip delimiters en masse. Needs - ** to happen in two places, though, which is annoying. - */ - } - return SQLITE_DONE; -} - -static sqlite3_tokenizer_module simpleTokenizerModule = { - 0, - simpleCreate, - simpleDestroy, - simpleOpen, - simpleClose, - simpleNext, -}; - -void get_simple_tokenizer_module( - sqlite3_tokenizer_module **ppModule -){ - *ppModule = &simpleTokenizerModule; -} diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/tokenizer.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/tokenizer.h deleted file mode 100644 index 18ebb0f6e4..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts1/tokenizer.h +++ /dev/null @@ -1,89 +0,0 @@ -/* -** 2006 July 10 -** -** The author disclaims copyright to this source code. -** -************************************************************************* -** Defines the interface to tokenizers used by fulltext-search. There -** are three basic components: -** -** sqlite3_tokenizer_module is a singleton defining the tokenizer -** interface functions. This is essentially the class structure for -** tokenizers. -** -** sqlite3_tokenizer is used to define a particular tokenizer, perhaps -** including customization information defined at creation time. -** -** sqlite3_tokenizer_cursor is generated by a tokenizer to generate -** tokens from a particular input. -*/ -#ifndef _TOKENIZER_H_ -#define _TOKENIZER_H_ - -/* TODO(shess) Only used for SQLITE_OK and SQLITE_DONE at this time. -** If tokenizers are to be allowed to call sqlite3_*() functions, then -** we will need a way to register the API consistently. -*/ -#include "sqlite3.h" - -/* -** Structures used by the tokenizer interface. -*/ -typedef struct sqlite3_tokenizer sqlite3_tokenizer; -typedef struct sqlite3_tokenizer_cursor sqlite3_tokenizer_cursor; -typedef struct sqlite3_tokenizer_module sqlite3_tokenizer_module; - -struct sqlite3_tokenizer_module { - int iVersion; /* currently 0 */ - - /* - ** Create and destroy a tokenizer. argc/argv are passed down from - ** the fulltext virtual table creation to allow customization. - */ - int (*xCreate)(int argc, const char **argv, - sqlite3_tokenizer **ppTokenizer); - int (*xDestroy)(sqlite3_tokenizer *pTokenizer); - - /* - ** Tokenize a particular input. Call xOpen() to prepare to - ** tokenize, xNext() repeatedly until it returns SQLITE_DONE, then - ** xClose() to free any internal state. The pInput passed to - ** xOpen() must exist until the cursor is closed. The ppToken - ** result from xNext() is only valid until the next call to xNext() - ** or until xClose() is called. - */ - /* TODO(shess) current implementation requires pInput to be - ** nul-terminated. This should either be fixed, or pInput/nBytes - ** should be converted to zInput. - */ - int (*xOpen)(sqlite3_tokenizer *pTokenizer, - const char *pInput, int nBytes, - sqlite3_tokenizer_cursor **ppCursor); - int (*xClose)(sqlite3_tokenizer_cursor *pCursor); - int (*xNext)(sqlite3_tokenizer_cursor *pCursor, - const char **ppToken, int *pnBytes, - int *piStartOffset, int *piEndOffset, int *piPosition); -}; - -struct sqlite3_tokenizer { - sqlite3_tokenizer_module *pModule; /* The module for this tokenizer */ - /* Tokenizer implementations will typically add additional fields */ -}; - -struct sqlite3_tokenizer_cursor { - sqlite3_tokenizer *pTokenizer; /* Tokenizer for this cursor. */ - /* Tokenizer implementations will typically add additional fields */ -}; - -/* -** Get the module for a tokenizer which generates tokens based on a -** set of non-token characters. The default is to break tokens at any -** non-alnum character, though the set of delimiters can also be -** specified by the first argv argument to xCreate(). -*/ -/* TODO(shess) This doesn't belong here. Need some sort of -** registration process. -*/ -void get_simple_tokenizer_module(sqlite3_tokenizer_module **ppModule); - -#endif /* _TOKENIZER_H_ */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/README.tokenizers b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/README.tokenizers deleted file mode 100644 index ed1afac1d8..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/README.tokenizers +++ /dev/null @@ -1,133 +0,0 @@ - -1. FTS2 Tokenizers - - When creating a new full-text table, FTS2 allows the user to select - the text tokenizer implementation to be used when indexing text - by specifying a "tokenizer" clause as part of the CREATE VIRTUAL TABLE - statement: - - CREATE VIRTUAL TABLE USING fts2( - [, tokenizer []] - ); - - The built-in tokenizers (valid values to pass as ) are - "simple" and "porter". - - should consist of zero or more white-space separated - arguments to pass to the selected tokenizer implementation. The - interpretation of the arguments, if any, depends on the individual - tokenizer. - -2. Custom Tokenizers - - FTS2 allows users to provide custom tokenizer implementations. The - interface used to create a new tokenizer is defined and described in - the fts2_tokenizer.h source file. - - Registering a new FTS2 tokenizer is similar to registering a new - virtual table module with SQLite. The user passes a pointer to a - structure containing pointers to various callback functions that - make up the implementation of the new tokenizer type. For tokenizers, - the structure (defined in fts2_tokenizer.h) is called - "sqlite3_tokenizer_module". - - FTS2 does not expose a C-function that users call to register new - tokenizer types with a database handle. Instead, the pointer must - be encoded as an SQL blob value and passed to FTS2 through the SQL - engine by evaluating a special scalar function, "fts2_tokenizer()". - The fts2_tokenizer() function may be called with one or two arguments, - as follows: - - SELECT fts2_tokenizer(); - SELECT fts2_tokenizer(, ); - - Where is a string identifying the tokenizer and - is a pointer to an sqlite3_tokenizer_module - structure encoded as an SQL blob. If the second argument is present, - it is registered as tokenizer and a copy of it - returned. If only one argument is passed, a pointer to the tokenizer - implementation currently registered as is returned, - encoded as a blob. Or, if no such tokenizer exists, an SQL exception - (error) is raised. - - SECURITY: If the fts2 extension is used in an environment where potentially - malicious users may execute arbitrary SQL (i.e. gears), they should be - prevented from invoking the fts2_tokenizer() function, possibly using the - authorisation callback. - - See "Sample code" below for an example of calling the fts2_tokenizer() - function from C code. - -3. ICU Library Tokenizers - - If this extension is compiled with the SQLITE_ENABLE_ICU pre-processor - symbol defined, then there exists a built-in tokenizer named "icu" - implemented using the ICU library. The first argument passed to the - xCreate() method (see fts2_tokenizer.h) of this tokenizer may be - an ICU locale identifier. For example "tr_TR" for Turkish as used - in Turkey, or "en_AU" for English as used in Australia. For example: - - "CREATE VIRTUAL TABLE thai_text USING fts2(text, tokenizer icu th_TH)" - - The ICU tokenizer implementation is very simple. It splits the input - text according to the ICU rules for finding word boundaries and discards - any tokens that consist entirely of white-space. This may be suitable - for some applications in some locales, but not all. If more complex - processing is required, for example to implement stemming or - discard punctuation, this can be done by creating a tokenizer - implementation that uses the ICU tokenizer as part of its implementation. - - When using the ICU tokenizer this way, it is safe to overwrite the - contents of the strings returned by the xNext() method (see - fts2_tokenizer.h). - -4. Sample code. - - The following two code samples illustrate the way C code should invoke - the fts2_tokenizer() scalar function: - - int registerTokenizer( - sqlite3 *db, - char *zName, - const sqlite3_tokenizer_module *p - ){ - int rc; - sqlite3_stmt *pStmt; - const char zSql[] = "SELECT fts2_tokenizer(?, ?)"; - - rc = sqlite3_prepare_v2(db, zSql, -1, &pStmt, 0); - if( rc!=SQLITE_OK ){ - return rc; - } - - sqlite3_bind_text(pStmt, 1, zName, -1, SQLITE_STATIC); - sqlite3_bind_blob(pStmt, 2, &p, sizeof(p), SQLITE_STATIC); - sqlite3_step(pStmt); - - return sqlite3_finalize(pStmt); - } - - int queryTokenizer( - sqlite3 *db, - char *zName, - const sqlite3_tokenizer_module **pp - ){ - int rc; - sqlite3_stmt *pStmt; - const char zSql[] = "SELECT fts2_tokenizer(?)"; - - *pp = 0; - rc = sqlite3_prepare_v2(db, zSql, -1, &pStmt, 0); - if( rc!=SQLITE_OK ){ - return rc; - } - - sqlite3_bind_text(pStmt, 1, zName, -1, SQLITE_STATIC); - if( SQLITE_ROW==sqlite3_step(pStmt) ){ - if( sqlite3_column_type(pStmt, 0)==SQLITE_BLOB ){ - memcpy(pp, sqlite3_column_blob(pStmt, 0), sizeof(*pp)); - } - } - - return sqlite3_finalize(pStmt); - } diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/README.txt b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/README.txt deleted file mode 100644 index ae41af156e..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/README.txt +++ /dev/null @@ -1,4 +0,0 @@ -This folder contains source code to the second full-text search -extension for SQLite. While the API is the same, this version uses a -substantially different storage schema from fts1, so tables will need -to be rebuilt. diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/fts2.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/fts2.c deleted file mode 100644 index 2a1ef46be6..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/fts2.c +++ /dev/null @@ -1,6857 +0,0 @@ -/* fts2 has a design flaw which can lead to database corruption (see -** below). It is recommended not to use it any longer, instead use -** fts3 (or higher). If you believe that your use of fts2 is safe, -** add -DSQLITE_ENABLE_BROKEN_FTS2=1 to your CFLAGS. -*/ -#if (!defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS2)) \ - && !defined(SQLITE_ENABLE_BROKEN_FTS2) -#error fts2 has a design flaw and has been deprecated. -#endif -/* The flaw is that fts2 uses the content table's unaliased rowid as -** the unique docid. fts2 embeds the rowid in the index it builds, -** and expects the rowid to not change. The SQLite VACUUM operation -** will renumber such rowids, thereby breaking fts2. If you are using -** fts2 in a system which has disabled VACUUM, then you can continue -** to use it safely. Note that PRAGMA auto_vacuum does NOT disable -** VACUUM, though systems using auto_vacuum are unlikely to invoke -** VACUUM. -** -** Unlike fts1, which is safe across VACUUM if you never delete -** documents, fts2 has a second exposure to this flaw, in the segments -** table. So fts2 should be considered unsafe across VACUUM in all -** cases. -*/ - -/* -** 2006 Oct 10 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This is an SQLite module implementing full-text search. -*/ - -/* -** The code in this file is only compiled if: -** -** * The FTS2 module is being built as an extension -** (in which case SQLITE_CORE is not defined), or -** -** * The FTS2 module is being built into the core of -** SQLite (in which case SQLITE_ENABLE_FTS2 is defined). -*/ - -/* TODO(shess) Consider exporting this comment to an HTML file or the -** wiki. -*/ -/* The full-text index is stored in a series of b+tree (-like) -** structures called segments which map terms to doclists. The -** structures are like b+trees in layout, but are constructed from the -** bottom up in optimal fashion and are not updatable. Since trees -** are built from the bottom up, things will be described from the -** bottom up. -** -** -**** Varints **** -** The basic unit of encoding is a variable-length integer called a -** varint. We encode variable-length integers in little-endian order -** using seven bits * per byte as follows: -** -** KEY: -** A = 0xxxxxxx 7 bits of data and one flag bit -** B = 1xxxxxxx 7 bits of data and one flag bit -** -** 7 bits - A -** 14 bits - BA -** 21 bits - BBA -** and so on. -** -** This is identical to how sqlite encodes varints (see util.c). -** -** -**** Document lists **** -** A doclist (document list) holds a docid-sorted list of hits for a -** given term. Doclists hold docids, and can optionally associate -** token positions and offsets with docids. -** -** A DL_POSITIONS_OFFSETS doclist is stored like this: -** -** array { -** varint docid; -** array { (position list for column 0) -** varint position; (delta from previous position plus POS_BASE) -** varint startOffset; (delta from previous startOffset) -** varint endOffset; (delta from startOffset) -** } -** array { -** varint POS_COLUMN; (marks start of position list for new column) -** varint column; (index of new column) -** array { -** varint position; (delta from previous position plus POS_BASE) -** varint startOffset;(delta from previous startOffset) -** varint endOffset; (delta from startOffset) -** } -** } -** varint POS_END; (marks end of positions for this document. -** } -** -** Here, array { X } means zero or more occurrences of X, adjacent in -** memory. A "position" is an index of a token in the token stream -** generated by the tokenizer, while an "offset" is a byte offset, -** both based at 0. Note that POS_END and POS_COLUMN occur in the -** same logical place as the position element, and act as sentinals -** ending a position list array. -** -** A DL_POSITIONS doclist omits the startOffset and endOffset -** information. A DL_DOCIDS doclist omits both the position and -** offset information, becoming an array of varint-encoded docids. -** -** On-disk data is stored as type DL_DEFAULT, so we don't serialize -** the type. Due to how deletion is implemented in the segmentation -** system, on-disk doclists MUST store at least positions. -** -** -**** Segment leaf nodes **** -** Segment leaf nodes store terms and doclists, ordered by term. Leaf -** nodes are written using LeafWriter, and read using LeafReader (to -** iterate through a single leaf node's data) and LeavesReader (to -** iterate through a segment's entire leaf layer). Leaf nodes have -** the format: -** -** varint iHeight; (height from leaf level, always 0) -** varint nTerm; (length of first term) -** char pTerm[nTerm]; (content of first term) -** varint nDoclist; (length of term's associated doclist) -** char pDoclist[nDoclist]; (content of doclist) -** array { -** (further terms are delta-encoded) -** varint nPrefix; (length of prefix shared with previous term) -** varint nSuffix; (length of unshared suffix) -** char pTermSuffix[nSuffix];(unshared suffix of next term) -** varint nDoclist; (length of term's associated doclist) -** char pDoclist[nDoclist]; (content of doclist) -** } -** -** Here, array { X } means zero or more occurrences of X, adjacent in -** memory. -** -** Leaf nodes are broken into blocks which are stored contiguously in -** the %_segments table in sorted order. This means that when the end -** of a node is reached, the next term is in the node with the next -** greater node id. -** -** New data is spilled to a new leaf node when the current node -** exceeds LEAF_MAX bytes (default 2048). New data which itself is -** larger than STANDALONE_MIN (default 1024) is placed in a standalone -** node (a leaf node with a single term and doclist). The goal of -** these settings is to pack together groups of small doclists while -** making it efficient to directly access large doclists. The -** assumption is that large doclists represent terms which are more -** likely to be query targets. -** -** TODO(shess) It may be useful for blocking decisions to be more -** dynamic. For instance, it may make more sense to have a 2.5k leaf -** node rather than splitting into 2k and .5k nodes. My intuition is -** that this might extend through 2x or 4x the pagesize. -** -** -**** Segment interior nodes **** -** Segment interior nodes store blockids for subtree nodes and terms -** to describe what data is stored by the each subtree. Interior -** nodes are written using InteriorWriter, and read using -** InteriorReader. InteriorWriters are created as needed when -** SegmentWriter creates new leaf nodes, or when an interior node -** itself grows too big and must be split. The format of interior -** nodes: -** -** varint iHeight; (height from leaf level, always >0) -** varint iBlockid; (block id of node's leftmost subtree) -** optional { -** varint nTerm; (length of first term) -** char pTerm[nTerm]; (content of first term) -** array { -** (further terms are delta-encoded) -** varint nPrefix; (length of shared prefix with previous term) -** varint nSuffix; (length of unshared suffix) -** char pTermSuffix[nSuffix]; (unshared suffix of next term) -** } -** } -** -** Here, optional { X } means an optional element, while array { X } -** means zero or more occurrences of X, adjacent in memory. -** -** An interior node encodes n terms separating n+1 subtrees. The -** subtree blocks are contiguous, so only the first subtree's blockid -** is encoded. The subtree at iBlockid will contain all terms less -** than the first term encoded (or all terms if no term is encoded). -** Otherwise, for terms greater than or equal to pTerm[i] but less -** than pTerm[i+1], the subtree for that term will be rooted at -** iBlockid+i. Interior nodes only store enough term data to -** distinguish adjacent children (if the rightmost term of the left -** child is "something", and the leftmost term of the right child is -** "wicked", only "w" is stored). -** -** New data is spilled to a new interior node at the same height when -** the current node exceeds INTERIOR_MAX bytes (default 2048). -** INTERIOR_MIN_TERMS (default 7) keeps large terms from monopolizing -** interior nodes and making the tree too skinny. The interior nodes -** at a given height are naturally tracked by interior nodes at -** height+1, and so on. -** -** -**** Segment directory **** -** The segment directory in table %_segdir stores meta-information for -** merging and deleting segments, and also the root node of the -** segment's tree. -** -** The root node is the top node of the segment's tree after encoding -** the entire segment, restricted to ROOT_MAX bytes (default 1024). -** This could be either a leaf node or an interior node. If the top -** node requires more than ROOT_MAX bytes, it is flushed to %_segments -** and a new root interior node is generated (which should always fit -** within ROOT_MAX because it only needs space for 2 varints, the -** height and the blockid of the previous root). -** -** The meta-information in the segment directory is: -** level - segment level (see below) -** idx - index within level -** - (level,idx uniquely identify a segment) -** start_block - first leaf node -** leaves_end_block - last leaf node -** end_block - last block (including interior nodes) -** root - contents of root node -** -** If the root node is a leaf node, then start_block, -** leaves_end_block, and end_block are all 0. -** -** -**** Segment merging **** -** To amortize update costs, segments are groups into levels and -** merged in matches. Each increase in level represents exponentially -** more documents. -** -** New documents (actually, document updates) are tokenized and -** written individually (using LeafWriter) to a level 0 segment, with -** incrementing idx. When idx reaches MERGE_COUNT (default 16), all -** level 0 segments are merged into a single level 1 segment. Level 1 -** is populated like level 0, and eventually MERGE_COUNT level 1 -** segments are merged to a single level 2 segment (representing -** MERGE_COUNT^2 updates), and so on. -** -** A segment merge traverses all segments at a given level in -** parallel, performing a straightforward sorted merge. Since segment -** leaf nodes are written in to the %_segments table in order, this -** merge traverses the underlying sqlite disk structures efficiently. -** After the merge, all segment blocks from the merged level are -** deleted. -** -** MERGE_COUNT controls how often we merge segments. 16 seems to be -** somewhat of a sweet spot for insertion performance. 32 and 64 show -** very similar performance numbers to 16 on insertion, though they're -** a tiny bit slower (perhaps due to more overhead in merge-time -** sorting). 8 is about 20% slower than 16, 4 about 50% slower than -** 16, 2 about 66% slower than 16. -** -** At query time, high MERGE_COUNT increases the number of segments -** which need to be scanned and merged. For instance, with 100k docs -** inserted: -** -** MERGE_COUNT segments -** 16 25 -** 8 12 -** 4 10 -** 2 6 -** -** This appears to have only a moderate impact on queries for very -** frequent terms (which are somewhat dominated by segment merge -** costs), and infrequent and non-existent terms still seem to be fast -** even with many segments. -** -** TODO(shess) That said, it would be nice to have a better query-side -** argument for MERGE_COUNT of 16. Also, it is possible/likely that -** optimizations to things like doclist merging will swing the sweet -** spot around. -** -** -** -**** Handling of deletions and updates **** -** Since we're using a segmented structure, with no docid-oriented -** index into the term index, we clearly cannot simply update the term -** index when a document is deleted or updated. For deletions, we -** write an empty doclist (varint(docid) varint(POS_END)), for updates -** we simply write the new doclist. Segment merges overwrite older -** data for a particular docid with newer data, so deletes or updates -** will eventually overtake the earlier data and knock it out. The -** query logic likewise merges doclists so that newer data knocks out -** older data. -** -** TODO(shess) Provide a VACUUM type operation to clear out all -** deletions and duplications. This would basically be a forced merge -** into a single segment. -*/ - -#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS2) - -#if defined(SQLITE_ENABLE_FTS2) && !defined(SQLITE_CORE) -# define SQLITE_CORE 1 -#endif - -#include -#include -#include -#include -#include "fts2.h" -#include "fts2_hash.h" -#include "fts2_tokenizer.h" -#include "sqlite3.h" -#include "sqlite3ext.h" -SQLITE_EXTENSION_INIT1 - - -/* TODO(shess) MAN, this thing needs some refactoring. At minimum, it -** would be nice to order the file better, perhaps something along the -** lines of: -** -** - utility functions -** - table setup functions -** - table update functions -** - table query functions -** -** Put the query functions last because they're likely to reference -** typedefs or functions from the table update section. -*/ - -#if 0 -# define TRACE(A) printf A; fflush(stdout) -#else -# define TRACE(A) -#endif - -/* It is not safe to call isspace(), tolower(), or isalnum() on -** hi-bit-set characters. This is the same solution used in the -** tokenizer. -*/ -/* TODO(shess) The snippet-generation code should be using the -** tokenizer-generated tokens rather than doing its own local -** tokenization. -*/ -/* TODO(shess) Is __isascii() a portable version of (c&0x80)==0? */ -static int safe_isspace(char c){ - return c==' ' || c=='\t' || c=='\n' || c=='\r' || c=='\v' || c=='\f'; -} -static int safe_tolower(char c){ - return (c>='A' && c<='Z') ? (c - 'A' + 'a') : c; -} -static int safe_isalnum(char c){ - return (c>='0' && c<='9') || (c>='A' && c<='Z') || (c>='a' && c<='z'); -} - -typedef enum DocListType { - DL_DOCIDS, /* docids only */ - DL_POSITIONS, /* docids + positions */ - DL_POSITIONS_OFFSETS /* docids + positions + offsets */ -} DocListType; - -/* -** By default, only positions and not offsets are stored in the doclists. -** To change this so that offsets are stored too, compile with -** -** -DDL_DEFAULT=DL_POSITIONS_OFFSETS -** -** If DL_DEFAULT is set to DL_DOCIDS, your table can only be inserted -** into (no deletes or updates). -*/ -#ifndef DL_DEFAULT -# define DL_DEFAULT DL_POSITIONS -#endif - -enum { - POS_END = 0, /* end of this position list */ - POS_COLUMN, /* followed by new column number */ - POS_BASE -}; - -/* MERGE_COUNT controls how often we merge segments (see comment at -** top of file). -*/ -#define MERGE_COUNT 16 - -/* utility functions */ - -/* CLEAR() and SCRAMBLE() abstract memset() on a pointer to a single -** record to prevent errors of the form: -** -** my_function(SomeType *b){ -** memset(b, '\0', sizeof(b)); // sizeof(b)!=sizeof(*b) -** } -*/ -/* TODO(shess) Obvious candidates for a header file. */ -#define CLEAR(b) memset(b, '\0', sizeof(*(b))) - -#ifndef NDEBUG -# define SCRAMBLE(b) memset(b, 0x55, sizeof(*(b))) -#else -# define SCRAMBLE(b) -#endif - -/* We may need up to VARINT_MAX bytes to store an encoded 64-bit integer. */ -#define VARINT_MAX 10 - -/* Write a 64-bit variable-length integer to memory starting at p[0]. - * The length of data written will be between 1 and VARINT_MAX bytes. - * The number of bytes written is returned. */ -static int putVarint(char *p, sqlite_int64 v){ - unsigned char *q = (unsigned char *) p; - sqlite_uint64 vu = v; - do{ - *q++ = (unsigned char) ((vu & 0x7f) | 0x80); - vu >>= 7; - }while( vu!=0 ); - q[-1] &= 0x7f; /* turn off high bit in final byte */ - assert( q - (unsigned char *)p <= VARINT_MAX ); - return (int) (q - (unsigned char *)p); -} - -/* Read a 64-bit variable-length integer from memory starting at p[0]. - * Return the number of bytes read, or 0 on error. - * The value is stored in *v. */ -static int getVarint(const char *p, sqlite_int64 *v){ - const unsigned char *q = (const unsigned char *) p; - sqlite_uint64 x = 0, y = 1; - while( (*q & 0x80) == 0x80 ){ - x += y * (*q++ & 0x7f); - y <<= 7; - if( q - (unsigned char *)p >= VARINT_MAX ){ /* bad data */ - assert( 0 ); - return 0; - } - } - x += y * (*q++); - *v = (sqlite_int64) x; - return (int) (q - (unsigned char *)p); -} - -static int getVarint32(const char *p, int *pi){ - sqlite_int64 i; - int ret = getVarint(p, &i); - *pi = (int) i; - assert( *pi==i ); - return ret; -} - -/*******************************************************************/ -/* DataBuffer is used to collect data into a buffer in piecemeal -** fashion. It implements the usual distinction between amount of -** data currently stored (nData) and buffer capacity (nCapacity). -** -** dataBufferInit - create a buffer with given initial capacity. -** dataBufferReset - forget buffer's data, retaining capacity. -** dataBufferDestroy - free buffer's data. -** dataBufferSwap - swap contents of two buffers. -** dataBufferExpand - expand capacity without adding data. -** dataBufferAppend - append data. -** dataBufferAppend2 - append two pieces of data at once. -** dataBufferReplace - replace buffer's data. -*/ -typedef struct DataBuffer { - char *pData; /* Pointer to malloc'ed buffer. */ - int nCapacity; /* Size of pData buffer. */ - int nData; /* End of data loaded into pData. */ -} DataBuffer; - -static void dataBufferInit(DataBuffer *pBuffer, int nCapacity){ - assert( nCapacity>=0 ); - pBuffer->nData = 0; - pBuffer->nCapacity = nCapacity; - pBuffer->pData = nCapacity==0 ? NULL : sqlite3_malloc(nCapacity); -} -static void dataBufferReset(DataBuffer *pBuffer){ - pBuffer->nData = 0; -} -static void dataBufferDestroy(DataBuffer *pBuffer){ - if( pBuffer->pData!=NULL ) sqlite3_free(pBuffer->pData); - SCRAMBLE(pBuffer); -} -static void dataBufferSwap(DataBuffer *pBuffer1, DataBuffer *pBuffer2){ - DataBuffer tmp = *pBuffer1; - *pBuffer1 = *pBuffer2; - *pBuffer2 = tmp; -} -static void dataBufferExpand(DataBuffer *pBuffer, int nAddCapacity){ - assert( nAddCapacity>0 ); - /* TODO(shess) Consider expanding more aggressively. Note that the - ** underlying malloc implementation may take care of such things for - ** us already. - */ - if( pBuffer->nData+nAddCapacity>pBuffer->nCapacity ){ - pBuffer->nCapacity = pBuffer->nData+nAddCapacity; - pBuffer->pData = sqlite3_realloc(pBuffer->pData, pBuffer->nCapacity); - } -} -static void dataBufferAppend(DataBuffer *pBuffer, - const char *pSource, int nSource){ - assert( nSource>0 && pSource!=NULL ); - dataBufferExpand(pBuffer, nSource); - memcpy(pBuffer->pData+pBuffer->nData, pSource, nSource); - pBuffer->nData += nSource; -} -static void dataBufferAppend2(DataBuffer *pBuffer, - const char *pSource1, int nSource1, - const char *pSource2, int nSource2){ - assert( nSource1>0 && pSource1!=NULL ); - assert( nSource2>0 && pSource2!=NULL ); - dataBufferExpand(pBuffer, nSource1+nSource2); - memcpy(pBuffer->pData+pBuffer->nData, pSource1, nSource1); - memcpy(pBuffer->pData+pBuffer->nData+nSource1, pSource2, nSource2); - pBuffer->nData += nSource1+nSource2; -} -static void dataBufferReplace(DataBuffer *pBuffer, - const char *pSource, int nSource){ - dataBufferReset(pBuffer); - dataBufferAppend(pBuffer, pSource, nSource); -} - -/* StringBuffer is a null-terminated version of DataBuffer. */ -typedef struct StringBuffer { - DataBuffer b; /* Includes null terminator. */ -} StringBuffer; - -static void initStringBuffer(StringBuffer *sb){ - dataBufferInit(&sb->b, 100); - dataBufferReplace(&sb->b, "", 1); -} -static int stringBufferLength(StringBuffer *sb){ - return sb->b.nData-1; -} -static char *stringBufferData(StringBuffer *sb){ - return sb->b.pData; -} -static void stringBufferDestroy(StringBuffer *sb){ - dataBufferDestroy(&sb->b); -} - -static void nappend(StringBuffer *sb, const char *zFrom, int nFrom){ - assert( sb->b.nData>0 ); - if( nFrom>0 ){ - sb->b.nData--; - dataBufferAppend2(&sb->b, zFrom, nFrom, "", 1); - } -} -static void append(StringBuffer *sb, const char *zFrom){ - nappend(sb, zFrom, strlen(zFrom)); -} - -/* Append a list of strings separated by commas. */ -static void appendList(StringBuffer *sb, int nString, char **azString){ - int i; - for(i=0; i0 ) append(sb, ", "); - append(sb, azString[i]); - } -} - -static int endsInWhiteSpace(StringBuffer *p){ - return stringBufferLength(p)>0 && - safe_isspace(stringBufferData(p)[stringBufferLength(p)-1]); -} - -/* If the StringBuffer ends in something other than white space, add a -** single space character to the end. -*/ -static void appendWhiteSpace(StringBuffer *p){ - if( stringBufferLength(p)==0 ) return; - if( !endsInWhiteSpace(p) ) append(p, " "); -} - -/* Remove white space from the end of the StringBuffer */ -static void trimWhiteSpace(StringBuffer *p){ - while( endsInWhiteSpace(p) ){ - p->b.pData[--p->b.nData-1] = '\0'; - } -} - -/*******************************************************************/ -/* DLReader is used to read document elements from a doclist. The -** current docid is cached, so dlrDocid() is fast. DLReader does not -** own the doclist buffer. -** -** dlrAtEnd - true if there's no more data to read. -** dlrDocid - docid of current document. -** dlrDocData - doclist data for current document (including docid). -** dlrDocDataBytes - length of same. -** dlrAllDataBytes - length of all remaining data. -** dlrPosData - position data for current document. -** dlrPosDataLen - length of pos data for current document (incl POS_END). -** dlrStep - step to current document. -** dlrInit - initial for doclist of given type against given data. -** dlrDestroy - clean up. -** -** Expected usage is something like: -** -** DLReader reader; -** dlrInit(&reader, pData, nData); -** while( !dlrAtEnd(&reader) ){ -** // calls to dlrDocid() and kin. -** dlrStep(&reader); -** } -** dlrDestroy(&reader); -*/ -typedef struct DLReader { - DocListType iType; - const char *pData; - int nData; - - sqlite_int64 iDocid; - int nElement; -} DLReader; - -static int dlrAtEnd(DLReader *pReader){ - assert( pReader->nData>=0 ); - return pReader->nData==0; -} -static sqlite_int64 dlrDocid(DLReader *pReader){ - assert( !dlrAtEnd(pReader) ); - return pReader->iDocid; -} -static const char *dlrDocData(DLReader *pReader){ - assert( !dlrAtEnd(pReader) ); - return pReader->pData; -} -static int dlrDocDataBytes(DLReader *pReader){ - assert( !dlrAtEnd(pReader) ); - return pReader->nElement; -} -static int dlrAllDataBytes(DLReader *pReader){ - assert( !dlrAtEnd(pReader) ); - return pReader->nData; -} -/* TODO(shess) Consider adding a field to track iDocid varint length -** to make these two functions faster. This might matter (a tiny bit) -** for queries. -*/ -static const char *dlrPosData(DLReader *pReader){ - sqlite_int64 iDummy; - int n = getVarint(pReader->pData, &iDummy); - assert( !dlrAtEnd(pReader) ); - return pReader->pData+n; -} -static int dlrPosDataLen(DLReader *pReader){ - sqlite_int64 iDummy; - int n = getVarint(pReader->pData, &iDummy); - assert( !dlrAtEnd(pReader) ); - return pReader->nElement-n; -} -static void dlrStep(DLReader *pReader){ - assert( !dlrAtEnd(pReader) ); - - /* Skip past current doclist element. */ - assert( pReader->nElement<=pReader->nData ); - pReader->pData += pReader->nElement; - pReader->nData -= pReader->nElement; - - /* If there is more data, read the next doclist element. */ - if( pReader->nData!=0 ){ - sqlite_int64 iDocidDelta; - int iDummy, n = getVarint(pReader->pData, &iDocidDelta); - pReader->iDocid += iDocidDelta; - if( pReader->iType>=DL_POSITIONS ){ - assert( nnData ); - while( 1 ){ - n += getVarint32(pReader->pData+n, &iDummy); - assert( n<=pReader->nData ); - if( iDummy==POS_END ) break; - if( iDummy==POS_COLUMN ){ - n += getVarint32(pReader->pData+n, &iDummy); - assert( nnData ); - }else if( pReader->iType==DL_POSITIONS_OFFSETS ){ - n += getVarint32(pReader->pData+n, &iDummy); - n += getVarint32(pReader->pData+n, &iDummy); - assert( nnData ); - } - } - } - pReader->nElement = n; - assert( pReader->nElement<=pReader->nData ); - } -} -static void dlrInit(DLReader *pReader, DocListType iType, - const char *pData, int nData){ - assert( pData!=NULL && nData!=0 ); - pReader->iType = iType; - pReader->pData = pData; - pReader->nData = nData; - pReader->nElement = 0; - pReader->iDocid = 0; - - /* Load the first element's data. There must be a first element. */ - dlrStep(pReader); -} -static void dlrDestroy(DLReader *pReader){ - SCRAMBLE(pReader); -} - -#ifndef NDEBUG -/* Verify that the doclist can be validly decoded. Also returns the -** last docid found because it is convenient in other assertions for -** DLWriter. -*/ -static void docListValidate(DocListType iType, const char *pData, int nData, - sqlite_int64 *pLastDocid){ - sqlite_int64 iPrevDocid = 0; - assert( nData>0 ); - assert( pData!=0 ); - assert( pData+nData>pData ); - while( nData!=0 ){ - sqlite_int64 iDocidDelta; - int n = getVarint(pData, &iDocidDelta); - iPrevDocid += iDocidDelta; - if( iType>DL_DOCIDS ){ - int iDummy; - while( 1 ){ - n += getVarint32(pData+n, &iDummy); - if( iDummy==POS_END ) break; - if( iDummy==POS_COLUMN ){ - n += getVarint32(pData+n, &iDummy); - }else if( iType>DL_POSITIONS ){ - n += getVarint32(pData+n, &iDummy); - n += getVarint32(pData+n, &iDummy); - } - assert( n<=nData ); - } - } - assert( n<=nData ); - pData += n; - nData -= n; - } - if( pLastDocid ) *pLastDocid = iPrevDocid; -} -#define ASSERT_VALID_DOCLIST(i, p, n, o) docListValidate(i, p, n, o) -#else -#define ASSERT_VALID_DOCLIST(i, p, n, o) assert( 1 ) -#endif - -/*******************************************************************/ -/* DLWriter is used to write doclist data to a DataBuffer. DLWriter -** always appends to the buffer and does not own it. -** -** dlwInit - initialize to write a given type doclistto a buffer. -** dlwDestroy - clear the writer's memory. Does not free buffer. -** dlwAppend - append raw doclist data to buffer. -** dlwCopy - copy next doclist from reader to writer. -** dlwAdd - construct doclist element and append to buffer. -** Only apply dlwAdd() to DL_DOCIDS doclists (else use PLWriter). -*/ -typedef struct DLWriter { - DocListType iType; - DataBuffer *b; - sqlite_int64 iPrevDocid; -#ifndef NDEBUG - int has_iPrevDocid; -#endif -} DLWriter; - -static void dlwInit(DLWriter *pWriter, DocListType iType, DataBuffer *b){ - pWriter->b = b; - pWriter->iType = iType; - pWriter->iPrevDocid = 0; -#ifndef NDEBUG - pWriter->has_iPrevDocid = 0; -#endif -} -static void dlwDestroy(DLWriter *pWriter){ - SCRAMBLE(pWriter); -} -/* iFirstDocid is the first docid in the doclist in pData. It is -** needed because pData may point within a larger doclist, in which -** case the first item would be delta-encoded. -** -** iLastDocid is the final docid in the doclist in pData. It is -** needed to create the new iPrevDocid for future delta-encoding. The -** code could decode the passed doclist to recreate iLastDocid, but -** the only current user (docListMerge) already has decoded this -** information. -*/ -/* TODO(shess) This has become just a helper for docListMerge. -** Consider a refactor to make this cleaner. -*/ -static void dlwAppend(DLWriter *pWriter, - const char *pData, int nData, - sqlite_int64 iFirstDocid, sqlite_int64 iLastDocid){ - sqlite_int64 iDocid = 0; - char c[VARINT_MAX]; - int nFirstOld, nFirstNew; /* Old and new varint len of first docid. */ -#ifndef NDEBUG - sqlite_int64 iLastDocidDelta; -#endif - - /* Recode the initial docid as delta from iPrevDocid. */ - nFirstOld = getVarint(pData, &iDocid); - assert( nFirstOldiType==DL_DOCIDS) ); - nFirstNew = putVarint(c, iFirstDocid-pWriter->iPrevDocid); - - /* Verify that the incoming doclist is valid AND that it ends with - ** the expected docid. This is essential because we'll trust this - ** docid in future delta-encoding. - */ - ASSERT_VALID_DOCLIST(pWriter->iType, pData, nData, &iLastDocidDelta); - assert( iLastDocid==iFirstDocid-iDocid+iLastDocidDelta ); - - /* Append recoded initial docid and everything else. Rest of docids - ** should have been delta-encoded from previous initial docid. - */ - if( nFirstOldb, c, nFirstNew, - pData+nFirstOld, nData-nFirstOld); - }else{ - dataBufferAppend(pWriter->b, c, nFirstNew); - } - pWriter->iPrevDocid = iLastDocid; -} -static void dlwCopy(DLWriter *pWriter, DLReader *pReader){ - dlwAppend(pWriter, dlrDocData(pReader), dlrDocDataBytes(pReader), - dlrDocid(pReader), dlrDocid(pReader)); -} -static void dlwAdd(DLWriter *pWriter, sqlite_int64 iDocid){ - char c[VARINT_MAX]; - int n = putVarint(c, iDocid-pWriter->iPrevDocid); - - /* Docids must ascend. */ - assert( !pWriter->has_iPrevDocid || iDocid>pWriter->iPrevDocid ); - assert( pWriter->iType==DL_DOCIDS ); - - dataBufferAppend(pWriter->b, c, n); - pWriter->iPrevDocid = iDocid; -#ifndef NDEBUG - pWriter->has_iPrevDocid = 1; -#endif -} - -/*******************************************************************/ -/* PLReader is used to read data from a document's position list. As -** the caller steps through the list, data is cached so that varints -** only need to be decoded once. -** -** plrInit, plrDestroy - create/destroy a reader. -** plrColumn, plrPosition, plrStartOffset, plrEndOffset - accessors -** plrAtEnd - at end of stream, only call plrDestroy once true. -** plrStep - step to the next element. -*/ -typedef struct PLReader { - /* These refer to the next position's data. nData will reach 0 when - ** reading the last position, so plrStep() signals EOF by setting - ** pData to NULL. - */ - const char *pData; - int nData; - - DocListType iType; - int iColumn; /* the last column read */ - int iPosition; /* the last position read */ - int iStartOffset; /* the last start offset read */ - int iEndOffset; /* the last end offset read */ -} PLReader; - -static int plrAtEnd(PLReader *pReader){ - return pReader->pData==NULL; -} -static int plrColumn(PLReader *pReader){ - assert( !plrAtEnd(pReader) ); - return pReader->iColumn; -} -static int plrPosition(PLReader *pReader){ - assert( !plrAtEnd(pReader) ); - return pReader->iPosition; -} -static int plrStartOffset(PLReader *pReader){ - assert( !plrAtEnd(pReader) ); - return pReader->iStartOffset; -} -static int plrEndOffset(PLReader *pReader){ - assert( !plrAtEnd(pReader) ); - return pReader->iEndOffset; -} -static void plrStep(PLReader *pReader){ - int i, n; - - assert( !plrAtEnd(pReader) ); - - if( pReader->nData==0 ){ - pReader->pData = NULL; - return; - } - - n = getVarint32(pReader->pData, &i); - if( i==POS_COLUMN ){ - n += getVarint32(pReader->pData+n, &pReader->iColumn); - pReader->iPosition = 0; - pReader->iStartOffset = 0; - n += getVarint32(pReader->pData+n, &i); - } - /* Should never see adjacent column changes. */ - assert( i!=POS_COLUMN ); - - if( i==POS_END ){ - pReader->nData = 0; - pReader->pData = NULL; - return; - } - - pReader->iPosition += i-POS_BASE; - if( pReader->iType==DL_POSITIONS_OFFSETS ){ - n += getVarint32(pReader->pData+n, &i); - pReader->iStartOffset += i; - n += getVarint32(pReader->pData+n, &i); - pReader->iEndOffset = pReader->iStartOffset+i; - } - assert( n<=pReader->nData ); - pReader->pData += n; - pReader->nData -= n; -} - -static void plrInit(PLReader *pReader, DLReader *pDLReader){ - pReader->pData = dlrPosData(pDLReader); - pReader->nData = dlrPosDataLen(pDLReader); - pReader->iType = pDLReader->iType; - pReader->iColumn = 0; - pReader->iPosition = 0; - pReader->iStartOffset = 0; - pReader->iEndOffset = 0; - plrStep(pReader); -} -static void plrDestroy(PLReader *pReader){ - SCRAMBLE(pReader); -} - -/*******************************************************************/ -/* PLWriter is used in constructing a document's position list. As a -** convenience, if iType is DL_DOCIDS, PLWriter becomes a no-op. -** PLWriter writes to the associated DLWriter's buffer. -** -** plwInit - init for writing a document's poslist. -** plwDestroy - clear a writer. -** plwAdd - append position and offset information. -** plwCopy - copy next position's data from reader to writer. -** plwTerminate - add any necessary doclist terminator. -** -** Calling plwAdd() after plwTerminate() may result in a corrupt -** doclist. -*/ -/* TODO(shess) Until we've written the second item, we can cache the -** first item's information. Then we'd have three states: -** -** - initialized with docid, no positions. -** - docid and one position. -** - docid and multiple positions. -** -** Only the last state needs to actually write to dlw->b, which would -** be an improvement in the DLCollector case. -*/ -typedef struct PLWriter { - DLWriter *dlw; - - int iColumn; /* the last column written */ - int iPos; /* the last position written */ - int iOffset; /* the last start offset written */ -} PLWriter; - -/* TODO(shess) In the case where the parent is reading these values -** from a PLReader, we could optimize to a copy if that PLReader has -** the same type as pWriter. -*/ -static void plwAdd(PLWriter *pWriter, int iColumn, int iPos, - int iStartOffset, int iEndOffset){ - /* Worst-case space for POS_COLUMN, iColumn, iPosDelta, - ** iStartOffsetDelta, and iEndOffsetDelta. - */ - char c[5*VARINT_MAX]; - int n = 0; - - /* Ban plwAdd() after plwTerminate(). */ - assert( pWriter->iPos!=-1 ); - - if( pWriter->dlw->iType==DL_DOCIDS ) return; - - if( iColumn!=pWriter->iColumn ){ - n += putVarint(c+n, POS_COLUMN); - n += putVarint(c+n, iColumn); - pWriter->iColumn = iColumn; - pWriter->iPos = 0; - pWriter->iOffset = 0; - } - assert( iPos>=pWriter->iPos ); - n += putVarint(c+n, POS_BASE+(iPos-pWriter->iPos)); - pWriter->iPos = iPos; - if( pWriter->dlw->iType==DL_POSITIONS_OFFSETS ){ - assert( iStartOffset>=pWriter->iOffset ); - n += putVarint(c+n, iStartOffset-pWriter->iOffset); - pWriter->iOffset = iStartOffset; - assert( iEndOffset>=iStartOffset ); - n += putVarint(c+n, iEndOffset-iStartOffset); - } - dataBufferAppend(pWriter->dlw->b, c, n); -} -static void plwCopy(PLWriter *pWriter, PLReader *pReader){ - plwAdd(pWriter, plrColumn(pReader), plrPosition(pReader), - plrStartOffset(pReader), plrEndOffset(pReader)); -} -static void plwInit(PLWriter *pWriter, DLWriter *dlw, sqlite_int64 iDocid){ - char c[VARINT_MAX]; - int n; - - pWriter->dlw = dlw; - - /* Docids must ascend. */ - assert( !pWriter->dlw->has_iPrevDocid || iDocid>pWriter->dlw->iPrevDocid ); - n = putVarint(c, iDocid-pWriter->dlw->iPrevDocid); - dataBufferAppend(pWriter->dlw->b, c, n); - pWriter->dlw->iPrevDocid = iDocid; -#ifndef NDEBUG - pWriter->dlw->has_iPrevDocid = 1; -#endif - - pWriter->iColumn = 0; - pWriter->iPos = 0; - pWriter->iOffset = 0; -} -/* TODO(shess) Should plwDestroy() also terminate the doclist? But -** then plwDestroy() would no longer be just a destructor, it would -** also be doing work, which isn't consistent with the overall idiom. -** Another option would be for plwAdd() to always append any necessary -** terminator, so that the output is always correct. But that would -** add incremental work to the common case with the only benefit being -** API elegance. Punt for now. -*/ -static void plwTerminate(PLWriter *pWriter){ - if( pWriter->dlw->iType>DL_DOCIDS ){ - char c[VARINT_MAX]; - int n = putVarint(c, POS_END); - dataBufferAppend(pWriter->dlw->b, c, n); - } -#ifndef NDEBUG - /* Mark as terminated for assert in plwAdd(). */ - pWriter->iPos = -1; -#endif -} -static void plwDestroy(PLWriter *pWriter){ - SCRAMBLE(pWriter); -} - -/*******************************************************************/ -/* DLCollector wraps PLWriter and DLWriter to provide a -** dynamically-allocated doclist area to use during tokenization. -** -** dlcNew - malloc up and initialize a collector. -** dlcDelete - destroy a collector and all contained items. -** dlcAddPos - append position and offset information. -** dlcAddDoclist - add the collected doclist to the given buffer. -** dlcNext - terminate the current document and open another. -*/ -typedef struct DLCollector { - DataBuffer b; - DLWriter dlw; - PLWriter plw; -} DLCollector; - -/* TODO(shess) This could also be done by calling plwTerminate() and -** dataBufferAppend(). I tried that, expecting nominal performance -** differences, but it seemed to pretty reliably be worth 1% to code -** it this way. I suspect it is the incremental malloc overhead (some -** percentage of the plwTerminate() calls will cause a realloc), so -** this might be worth revisiting if the DataBuffer implementation -** changes. -*/ -static void dlcAddDoclist(DLCollector *pCollector, DataBuffer *b){ - if( pCollector->dlw.iType>DL_DOCIDS ){ - char c[VARINT_MAX]; - int n = putVarint(c, POS_END); - dataBufferAppend2(b, pCollector->b.pData, pCollector->b.nData, c, n); - }else{ - dataBufferAppend(b, pCollector->b.pData, pCollector->b.nData); - } -} -static void dlcNext(DLCollector *pCollector, sqlite_int64 iDocid){ - plwTerminate(&pCollector->plw); - plwDestroy(&pCollector->plw); - plwInit(&pCollector->plw, &pCollector->dlw, iDocid); -} -static void dlcAddPos(DLCollector *pCollector, int iColumn, int iPos, - int iStartOffset, int iEndOffset){ - plwAdd(&pCollector->plw, iColumn, iPos, iStartOffset, iEndOffset); -} - -static DLCollector *dlcNew(sqlite_int64 iDocid, DocListType iType){ - DLCollector *pCollector = sqlite3_malloc(sizeof(DLCollector)); - dataBufferInit(&pCollector->b, 0); - dlwInit(&pCollector->dlw, iType, &pCollector->b); - plwInit(&pCollector->plw, &pCollector->dlw, iDocid); - return pCollector; -} -static void dlcDelete(DLCollector *pCollector){ - plwDestroy(&pCollector->plw); - dlwDestroy(&pCollector->dlw); - dataBufferDestroy(&pCollector->b); - SCRAMBLE(pCollector); - sqlite3_free(pCollector); -} - - -/* Copy the doclist data of iType in pData/nData into *out, trimming -** unnecessary data as we go. Only columns matching iColumn are -** copied, all columns copied if iColumn is -1. Elements with no -** matching columns are dropped. The output is an iOutType doclist. -*/ -/* NOTE(shess) This code is only valid after all doclists are merged. -** If this is run before merges, then doclist items which represent -** deletion will be trimmed, and will thus not effect a deletion -** during the merge. -*/ -static void docListTrim(DocListType iType, const char *pData, int nData, - int iColumn, DocListType iOutType, DataBuffer *out){ - DLReader dlReader; - DLWriter dlWriter; - - assert( iOutType<=iType ); - - dlrInit(&dlReader, iType, pData, nData); - dlwInit(&dlWriter, iOutType, out); - - while( !dlrAtEnd(&dlReader) ){ - PLReader plReader; - PLWriter plWriter; - int match = 0; - - plrInit(&plReader, &dlReader); - - while( !plrAtEnd(&plReader) ){ - if( iColumn==-1 || plrColumn(&plReader)==iColumn ){ - if( !match ){ - plwInit(&plWriter, &dlWriter, dlrDocid(&dlReader)); - match = 1; - } - plwAdd(&plWriter, plrColumn(&plReader), plrPosition(&plReader), - plrStartOffset(&plReader), plrEndOffset(&plReader)); - } - plrStep(&plReader); - } - if( match ){ - plwTerminate(&plWriter); - plwDestroy(&plWriter); - } - - plrDestroy(&plReader); - dlrStep(&dlReader); - } - dlwDestroy(&dlWriter); - dlrDestroy(&dlReader); -} - -/* Used by docListMerge() to keep doclists in the ascending order by -** docid, then ascending order by age (so the newest comes first). -*/ -typedef struct OrderedDLReader { - DLReader *pReader; - - /* TODO(shess) If we assume that docListMerge pReaders is ordered by - ** age (which we do), then we could use pReader comparisons to break - ** ties. - */ - int idx; -} OrderedDLReader; - -/* Order eof to end, then by docid asc, idx desc. */ -static int orderedDLReaderCmp(OrderedDLReader *r1, OrderedDLReader *r2){ - if( dlrAtEnd(r1->pReader) ){ - if( dlrAtEnd(r2->pReader) ) return 0; /* Both atEnd(). */ - return 1; /* Only r1 atEnd(). */ - } - if( dlrAtEnd(r2->pReader) ) return -1; /* Only r2 atEnd(). */ - - if( dlrDocid(r1->pReader)pReader) ) return -1; - if( dlrDocid(r1->pReader)>dlrDocid(r2->pReader) ) return 1; - - /* Descending on idx. */ - return r2->idx-r1->idx; -} - -/* Bubble p[0] to appropriate place in p[1..n-1]. Assumes that -** p[1..n-1] is already sorted. -*/ -/* TODO(shess) Is this frequent enough to warrant a binary search? -** Before implementing that, instrument the code to check. In most -** current usage, I expect that p[0] will be less than p[1] a very -** high proportion of the time. -*/ -static void orderedDLReaderReorder(OrderedDLReader *p, int n){ - while( n>1 && orderedDLReaderCmp(p, p+1)>0 ){ - OrderedDLReader tmp = p[0]; - p[0] = p[1]; - p[1] = tmp; - n--; - p++; - } -} - -/* Given an array of doclist readers, merge their doclist elements -** into out in sorted order (by docid), dropping elements from older -** readers when there is a duplicate docid. pReaders is assumed to be -** ordered by age, oldest first. -*/ -/* TODO(shess) nReaders must be <= MERGE_COUNT. This should probably -** be fixed. -*/ -static void docListMerge(DataBuffer *out, - DLReader *pReaders, int nReaders){ - OrderedDLReader readers[MERGE_COUNT]; - DLWriter writer; - int i, n; - const char *pStart = 0; - int nStart = 0; - sqlite_int64 iFirstDocid = 0, iLastDocid = 0; - - assert( nReaders>0 ); - if( nReaders==1 ){ - dataBufferAppend(out, dlrDocData(pReaders), dlrAllDataBytes(pReaders)); - return; - } - - assert( nReaders<=MERGE_COUNT ); - n = 0; - for(i=0; i0 ){ - orderedDLReaderReorder(readers+i, nReaders-i); - } - - dlwInit(&writer, pReaders[0].iType, out); - while( !dlrAtEnd(readers[0].pReader) ){ - sqlite_int64 iDocid = dlrDocid(readers[0].pReader); - - /* If this is a continuation of the current buffer to copy, extend - ** that buffer. memcpy() seems to be more efficient if it has a - ** lots of data to copy. - */ - if( dlrDocData(readers[0].pReader)==pStart+nStart ){ - nStart += dlrDocDataBytes(readers[0].pReader); - }else{ - if( pStart!=0 ){ - dlwAppend(&writer, pStart, nStart, iFirstDocid, iLastDocid); - } - pStart = dlrDocData(readers[0].pReader); - nStart = dlrDocDataBytes(readers[0].pReader); - iFirstDocid = iDocid; - } - iLastDocid = iDocid; - dlrStep(readers[0].pReader); - - /* Drop all of the older elements with the same docid. */ - for(i=1; i0 ){ - orderedDLReaderReorder(readers+i, nReaders-i); - } - } - - /* Copy over any remaining elements. */ - if( nStart>0 ) dlwAppend(&writer, pStart, nStart, iFirstDocid, iLastDocid); - dlwDestroy(&writer); -} - -/* Helper function for posListUnion(). Compares the current position -** between left and right, returning as standard C idiom of <0 if -** left0 if left>right, and 0 if left==right. "End" always -** compares greater. -*/ -static int posListCmp(PLReader *pLeft, PLReader *pRight){ - assert( pLeft->iType==pRight->iType ); - if( pLeft->iType==DL_DOCIDS ) return 0; - - if( plrAtEnd(pLeft) ) return plrAtEnd(pRight) ? 0 : 1; - if( plrAtEnd(pRight) ) return -1; - - if( plrColumn(pLeft)plrColumn(pRight) ) return 1; - - if( plrPosition(pLeft)plrPosition(pRight) ) return 1; - if( pLeft->iType==DL_POSITIONS ) return 0; - - if( plrStartOffset(pLeft)plrStartOffset(pRight) ) return 1; - - if( plrEndOffset(pLeft)plrEndOffset(pRight) ) return 1; - - return 0; -} - -/* Write the union of position lists in pLeft and pRight to pOut. -** "Union" in this case meaning "All unique position tuples". Should -** work with any doclist type, though both inputs and the output -** should be the same type. -*/ -static void posListUnion(DLReader *pLeft, DLReader *pRight, DLWriter *pOut){ - PLReader left, right; - PLWriter writer; - - assert( dlrDocid(pLeft)==dlrDocid(pRight) ); - assert( pLeft->iType==pRight->iType ); - assert( pLeft->iType==pOut->iType ); - - plrInit(&left, pLeft); - plrInit(&right, pRight); - plwInit(&writer, pOut, dlrDocid(pLeft)); - - while( !plrAtEnd(&left) || !plrAtEnd(&right) ){ - int c = posListCmp(&left, &right); - if( c<0 ){ - plwCopy(&writer, &left); - plrStep(&left); - }else if( c>0 ){ - plwCopy(&writer, &right); - plrStep(&right); - }else{ - plwCopy(&writer, &left); - plrStep(&left); - plrStep(&right); - } - } - - plwTerminate(&writer); - plwDestroy(&writer); - plrDestroy(&left); - plrDestroy(&right); -} - -/* Write the union of doclists in pLeft and pRight to pOut. For -** docids in common between the inputs, the union of the position -** lists is written. Inputs and outputs are always type DL_DEFAULT. -*/ -static void docListUnion( - const char *pLeft, int nLeft, - const char *pRight, int nRight, - DataBuffer *pOut /* Write the combined doclist here */ -){ - DLReader left, right; - DLWriter writer; - - if( nLeft==0 ){ - if( nRight!=0) dataBufferAppend(pOut, pRight, nRight); - return; - } - if( nRight==0 ){ - dataBufferAppend(pOut, pLeft, nLeft); - return; - } - - dlrInit(&left, DL_DEFAULT, pLeft, nLeft); - dlrInit(&right, DL_DEFAULT, pRight, nRight); - dlwInit(&writer, DL_DEFAULT, pOut); - - while( !dlrAtEnd(&left) || !dlrAtEnd(&right) ){ - if( dlrAtEnd(&right) ){ - dlwCopy(&writer, &left); - dlrStep(&left); - }else if( dlrAtEnd(&left) ){ - dlwCopy(&writer, &right); - dlrStep(&right); - }else if( dlrDocid(&left)dlrDocid(&right) ){ - dlwCopy(&writer, &right); - dlrStep(&right); - }else{ - posListUnion(&left, &right, &writer); - dlrStep(&left); - dlrStep(&right); - } - } - - dlrDestroy(&left); - dlrDestroy(&right); - dlwDestroy(&writer); -} - -/* pLeft and pRight are DLReaders positioned to the same docid. -** -** If there are no instances in pLeft or pRight where the position -** of pLeft is one less than the position of pRight, then this -** routine adds nothing to pOut. -** -** If there are one or more instances where positions from pLeft -** are exactly one less than positions from pRight, then add a new -** document record to pOut. If pOut wants to hold positions, then -** include the positions from pRight that are one more than a -** position in pLeft. In other words: pRight.iPos==pLeft.iPos+1. -*/ -static void posListPhraseMerge(DLReader *pLeft, DLReader *pRight, - DLWriter *pOut){ - PLReader left, right; - PLWriter writer; - int match = 0; - - assert( dlrDocid(pLeft)==dlrDocid(pRight) ); - assert( pOut->iType!=DL_POSITIONS_OFFSETS ); - - plrInit(&left, pLeft); - plrInit(&right, pRight); - - while( !plrAtEnd(&left) && !plrAtEnd(&right) ){ - if( plrColumn(&left)plrColumn(&right) ){ - plrStep(&right); - }else if( plrPosition(&left)+1plrPosition(&right) ){ - plrStep(&right); - }else{ - if( !match ){ - plwInit(&writer, pOut, dlrDocid(pLeft)); - match = 1; - } - plwAdd(&writer, plrColumn(&right), plrPosition(&right), 0, 0); - plrStep(&left); - plrStep(&right); - } - } - - if( match ){ - plwTerminate(&writer); - plwDestroy(&writer); - } - - plrDestroy(&left); - plrDestroy(&right); -} - -/* We have two doclists with positions: pLeft and pRight. -** Write the phrase intersection of these two doclists into pOut. -** -** A phrase intersection means that two documents only match -** if pLeft.iPos+1==pRight.iPos. -** -** iType controls the type of data written to pOut. If iType is -** DL_POSITIONS, the positions are those from pRight. -*/ -static void docListPhraseMerge( - const char *pLeft, int nLeft, - const char *pRight, int nRight, - DocListType iType, - DataBuffer *pOut /* Write the combined doclist here */ -){ - DLReader left, right; - DLWriter writer; - - if( nLeft==0 || nRight==0 ) return; - - assert( iType!=DL_POSITIONS_OFFSETS ); - - dlrInit(&left, DL_POSITIONS, pLeft, nLeft); - dlrInit(&right, DL_POSITIONS, pRight, nRight); - dlwInit(&writer, iType, pOut); - - while( !dlrAtEnd(&left) && !dlrAtEnd(&right) ){ - if( dlrDocid(&left) one AND (two OR three) - * [one OR two three] ==> (one OR two) AND three - * - * A "-" before a term matches all entries that lack that term. - * The "-" must occur immediately before the term with in intervening - * space. This is how the search engines do it. - * - * A NOT term cannot be the right-hand operand of an OR. If this - * occurs in the query string, the NOT is ignored: - * - * [one OR -two] ==> one OR two - * - */ -typedef struct Query { - fulltext_vtab *pFts; /* The full text index */ - int nTerms; /* Number of terms in the query */ - QueryTerm *pTerms; /* Array of terms. Space obtained from malloc() */ - int nextIsOr; /* Set the isOr flag on the next inserted term */ - int nextColumn; /* Next word parsed must be in this column */ - int dfltColumn; /* The default column */ -} Query; - - -/* -** An instance of the following structure keeps track of generated -** matching-word offset information and snippets. -*/ -typedef struct Snippet { - int nMatch; /* Total number of matches */ - int nAlloc; /* Space allocated for aMatch[] */ - struct snippetMatch { /* One entry for each matching term */ - char snStatus; /* Status flag for use while constructing snippets */ - short int iCol; /* The column that contains the match */ - short int iTerm; /* The index in Query.pTerms[] of the matching term */ - short int nByte; /* Number of bytes in the term */ - int iStart; /* The offset to the first character of the term */ - } *aMatch; /* Points to space obtained from malloc */ - char *zOffset; /* Text rendering of aMatch[] */ - int nOffset; /* strlen(zOffset) */ - char *zSnippet; /* Snippet text */ - int nSnippet; /* strlen(zSnippet) */ -} Snippet; - - -typedef enum QueryType { - QUERY_GENERIC, /* table scan */ - QUERY_ROWID, /* lookup by rowid */ - QUERY_FULLTEXT /* QUERY_FULLTEXT + [i] is a full-text search for column i*/ -} QueryType; - -typedef enum fulltext_statement { - CONTENT_INSERT_STMT, - CONTENT_SELECT_STMT, - CONTENT_UPDATE_STMT, - CONTENT_DELETE_STMT, - CONTENT_EXISTS_STMT, - - BLOCK_INSERT_STMT, - BLOCK_SELECT_STMT, - BLOCK_DELETE_STMT, - BLOCK_DELETE_ALL_STMT, - - SEGDIR_MAX_INDEX_STMT, - SEGDIR_SET_STMT, - SEGDIR_SELECT_LEVEL_STMT, - SEGDIR_SPAN_STMT, - SEGDIR_DELETE_STMT, - SEGDIR_SELECT_SEGMENT_STMT, - SEGDIR_SELECT_ALL_STMT, - SEGDIR_DELETE_ALL_STMT, - SEGDIR_COUNT_STMT, - - MAX_STMT /* Always at end! */ -} fulltext_statement; - -/* These must exactly match the enum above. */ -/* TODO(shess): Is there some risk that a statement will be used in two -** cursors at once, e.g. if a query joins a virtual table to itself? -** If so perhaps we should move some of these to the cursor object. -*/ -static const char *const fulltext_zStatement[MAX_STMT] = { - /* CONTENT_INSERT */ NULL, /* generated in contentInsertStatement() */ - /* CONTENT_SELECT */ "select * from %_content where rowid = ?", - /* CONTENT_UPDATE */ NULL, /* generated in contentUpdateStatement() */ - /* CONTENT_DELETE */ "delete from %_content where rowid = ?", - /* CONTENT_EXISTS */ "select rowid from %_content limit 1", - - /* BLOCK_INSERT */ "insert into %_segments values (?)", - /* BLOCK_SELECT */ "select block from %_segments where rowid = ?", - /* BLOCK_DELETE */ "delete from %_segments where rowid between ? and ?", - /* BLOCK_DELETE_ALL */ "delete from %_segments", - - /* SEGDIR_MAX_INDEX */ "select max(idx) from %_segdir where level = ?", - /* SEGDIR_SET */ "insert into %_segdir values (?, ?, ?, ?, ?, ?)", - /* SEGDIR_SELECT_LEVEL */ - "select start_block, leaves_end_block, root from %_segdir " - " where level = ? order by idx", - /* SEGDIR_SPAN */ - "select min(start_block), max(end_block) from %_segdir " - " where level = ? and start_block <> 0", - /* SEGDIR_DELETE */ "delete from %_segdir where level = ?", - - /* NOTE(shess): The first three results of the following two - ** statements must match. - */ - /* SEGDIR_SELECT_SEGMENT */ - "select start_block, leaves_end_block, root from %_segdir " - " where level = ? and idx = ?", - /* SEGDIR_SELECT_ALL */ - "select start_block, leaves_end_block, root from %_segdir " - " order by level desc, idx asc", - /* SEGDIR_DELETE_ALL */ "delete from %_segdir", - /* SEGDIR_COUNT */ "select count(*), ifnull(max(level),0) from %_segdir", -}; - -/* -** A connection to a fulltext index is an instance of the following -** structure. The xCreate and xConnect methods create an instance -** of this structure and xDestroy and xDisconnect free that instance. -** All other methods receive a pointer to the structure as one of their -** arguments. -*/ -struct fulltext_vtab { - sqlite3_vtab base; /* Base class used by SQLite core */ - sqlite3 *db; /* The database connection */ - const char *zDb; /* logical database name */ - const char *zName; /* virtual table name */ - int nColumn; /* number of columns in virtual table */ - char **azColumn; /* column names. malloced */ - char **azContentColumn; /* column names in content table; malloced */ - sqlite3_tokenizer *pTokenizer; /* tokenizer for inserts and queries */ - - /* Precompiled statements which we keep as long as the table is - ** open. - */ - sqlite3_stmt *pFulltextStatements[MAX_STMT]; - - /* Precompiled statements used for segment merges. We run a - ** separate select across the leaf level of each tree being merged. - */ - sqlite3_stmt *pLeafSelectStmts[MERGE_COUNT]; - /* The statement used to prepare pLeafSelectStmts. */ -#define LEAF_SELECT \ - "select block from %_segments where rowid between ? and ? order by rowid" - - /* These buffer pending index updates during transactions. - ** nPendingData estimates the memory size of the pending data. It - ** doesn't include the hash-bucket overhead, nor any malloc - ** overhead. When nPendingData exceeds kPendingThreshold, the - ** buffer is flushed even before the transaction closes. - ** pendingTerms stores the data, and is only valid when nPendingData - ** is >=0 (nPendingData<0 means pendingTerms has not been - ** initialized). iPrevDocid is the last docid written, used to make - ** certain we're inserting in sorted order. - */ - int nPendingData; -#define kPendingThreshold (1*1024*1024) - sqlite_int64 iPrevDocid; - fts2Hash pendingTerms; -}; - -/* -** When the core wants to do a query, it create a cursor using a -** call to xOpen. This structure is an instance of a cursor. It -** is destroyed by xClose. -*/ -typedef struct fulltext_cursor { - sqlite3_vtab_cursor base; /* Base class used by SQLite core */ - QueryType iCursorType; /* Copy of sqlite3_index_info.idxNum */ - sqlite3_stmt *pStmt; /* Prepared statement in use by the cursor */ - int eof; /* True if at End Of Results */ - Query q; /* Parsed query string */ - Snippet snippet; /* Cached snippet for the current row */ - int iColumn; /* Column being searched */ - DataBuffer result; /* Doclist results from fulltextQuery */ - DLReader reader; /* Result reader if result not empty */ -} fulltext_cursor; - -static struct fulltext_vtab *cursor_vtab(fulltext_cursor *c){ - return (fulltext_vtab *) c->base.pVtab; -} - -static const sqlite3_module fts2Module; /* forward declaration */ - -/* Return a dynamically generated statement of the form - * insert into %_content (rowid, ...) values (?, ...) - */ -static const char *contentInsertStatement(fulltext_vtab *v){ - StringBuffer sb; - int i; - - initStringBuffer(&sb); - append(&sb, "insert into %_content (rowid, "); - appendList(&sb, v->nColumn, v->azContentColumn); - append(&sb, ") values (?"); - for(i=0; inColumn; ++i) - append(&sb, ", ?"); - append(&sb, ")"); - return stringBufferData(&sb); -} - -/* Return a dynamically generated statement of the form - * update %_content set [col_0] = ?, [col_1] = ?, ... - * where rowid = ? - */ -static const char *contentUpdateStatement(fulltext_vtab *v){ - StringBuffer sb; - int i; - - initStringBuffer(&sb); - append(&sb, "update %_content set "); - for(i=0; inColumn; ++i) { - if( i>0 ){ - append(&sb, ", "); - } - append(&sb, v->azContentColumn[i]); - append(&sb, " = ?"); - } - append(&sb, " where rowid = ?"); - return stringBufferData(&sb); -} - -/* Puts a freshly-prepared statement determined by iStmt in *ppStmt. -** If the indicated statement has never been prepared, it is prepared -** and cached, otherwise the cached version is reset. -*/ -static int sql_get_statement(fulltext_vtab *v, fulltext_statement iStmt, - sqlite3_stmt **ppStmt){ - assert( iStmtpFulltextStatements[iStmt]==NULL ){ - const char *zStmt; - int rc; - switch( iStmt ){ - case CONTENT_INSERT_STMT: - zStmt = contentInsertStatement(v); break; - case CONTENT_UPDATE_STMT: - zStmt = contentUpdateStatement(v); break; - default: - zStmt = fulltext_zStatement[iStmt]; - } - rc = sql_prepare(v->db, v->zDb, v->zName, &v->pFulltextStatements[iStmt], - zStmt); - if( zStmt != fulltext_zStatement[iStmt]) sqlite3_free((void *) zStmt); - if( rc!=SQLITE_OK ) return rc; - } else { - int rc = sqlite3_reset(v->pFulltextStatements[iStmt]); - if( rc!=SQLITE_OK ) return rc; - } - - *ppStmt = v->pFulltextStatements[iStmt]; - return SQLITE_OK; -} - -/* Like sqlite3_step(), but convert SQLITE_DONE to SQLITE_OK and -** SQLITE_ROW to SQLITE_ERROR. Useful for statements like UPDATE, -** where we expect no results. -*/ -static int sql_single_step(sqlite3_stmt *s){ - int rc = sqlite3_step(s); - return (rc==SQLITE_DONE) ? SQLITE_OK : rc; -} - -/* Like sql_get_statement(), but for special replicated LEAF_SELECT -** statements. idx -1 is a special case for an uncached version of -** the statement (used in the optimize implementation). -*/ -/* TODO(shess) Write version for generic statements and then share -** that between the cached-statement functions. -*/ -static int sql_get_leaf_statement(fulltext_vtab *v, int idx, - sqlite3_stmt **ppStmt){ - assert( idx>=-1 && idxdb, v->zDb, v->zName, ppStmt, LEAF_SELECT); - }else if( v->pLeafSelectStmts[idx]==NULL ){ - int rc = sql_prepare(v->db, v->zDb, v->zName, &v->pLeafSelectStmts[idx], - LEAF_SELECT); - if( rc!=SQLITE_OK ) return rc; - }else{ - int rc = sqlite3_reset(v->pLeafSelectStmts[idx]); - if( rc!=SQLITE_OK ) return rc; - } - - *ppStmt = v->pLeafSelectStmts[idx]; - return SQLITE_OK; -} - -/* insert into %_content (rowid, ...) values ([rowid], [pValues]) */ -static int content_insert(fulltext_vtab *v, sqlite3_value *rowid, - sqlite3_value **pValues){ - sqlite3_stmt *s; - int i; - int rc = sql_get_statement(v, CONTENT_INSERT_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_value(s, 1, rowid); - if( rc!=SQLITE_OK ) return rc; - - for(i=0; inColumn; ++i){ - rc = sqlite3_bind_value(s, 2+i, pValues[i]); - if( rc!=SQLITE_OK ) return rc; - } - - return sql_single_step(s); -} - -/* update %_content set col0 = pValues[0], col1 = pValues[1], ... - * where rowid = [iRowid] */ -static int content_update(fulltext_vtab *v, sqlite3_value **pValues, - sqlite_int64 iRowid){ - sqlite3_stmt *s; - int i; - int rc = sql_get_statement(v, CONTENT_UPDATE_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - for(i=0; inColumn; ++i){ - rc = sqlite3_bind_value(s, 1+i, pValues[i]); - if( rc!=SQLITE_OK ) return rc; - } - - rc = sqlite3_bind_int64(s, 1+v->nColumn, iRowid); - if( rc!=SQLITE_OK ) return rc; - - return sql_single_step(s); -} - -static void freeStringArray(int nString, const char **pString){ - int i; - - for (i=0 ; i < nString ; ++i) { - if( pString[i]!=NULL ) sqlite3_free((void *) pString[i]); - } - sqlite3_free((void *) pString); -} - -/* select * from %_content where rowid = [iRow] - * The caller must delete the returned array and all strings in it. - * null fields will be NULL in the returned array. - * - * TODO: Perhaps we should return pointer/length strings here for consistency - * with other code which uses pointer/length. */ -static int content_select(fulltext_vtab *v, sqlite_int64 iRow, - const char ***pValues){ - sqlite3_stmt *s; - const char **values; - int i; - int rc; - - *pValues = NULL; - - rc = sql_get_statement(v, CONTENT_SELECT_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int64(s, 1, iRow); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_step(s); - if( rc!=SQLITE_ROW ) return rc; - - values = (const char **) sqlite3_malloc(v->nColumn * sizeof(const char *)); - for(i=0; inColumn; ++i){ - if( sqlite3_column_type(s, i)==SQLITE_NULL ){ - values[i] = NULL; - }else{ - values[i] = string_dup((char*)sqlite3_column_text(s, i)); - } - } - - /* We expect only one row. We must execute another sqlite3_step() - * to complete the iteration; otherwise the table will remain locked. */ - rc = sqlite3_step(s); - if( rc==SQLITE_DONE ){ - *pValues = values; - return SQLITE_OK; - } - - freeStringArray(v->nColumn, values); - return rc; -} - -/* delete from %_content where rowid = [iRow ] */ -static int content_delete(fulltext_vtab *v, sqlite_int64 iRow){ - sqlite3_stmt *s; - int rc = sql_get_statement(v, CONTENT_DELETE_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int64(s, 1, iRow); - if( rc!=SQLITE_OK ) return rc; - - return sql_single_step(s); -} - -/* Returns SQLITE_ROW if any rows exist in %_content, SQLITE_DONE if -** no rows exist, and any error in case of failure. -*/ -static int content_exists(fulltext_vtab *v){ - sqlite3_stmt *s; - int rc = sql_get_statement(v, CONTENT_EXISTS_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_step(s); - if( rc!=SQLITE_ROW ) return rc; - - /* We expect only one row. We must execute another sqlite3_step() - * to complete the iteration; otherwise the table will remain locked. */ - rc = sqlite3_step(s); - if( rc==SQLITE_DONE ) return SQLITE_ROW; - if( rc==SQLITE_ROW ) return SQLITE_ERROR; - return rc; -} - -/* insert into %_segments values ([pData]) -** returns assigned rowid in *piBlockid -*/ -static int block_insert(fulltext_vtab *v, const char *pData, int nData, - sqlite_int64 *piBlockid){ - sqlite3_stmt *s; - int rc = sql_get_statement(v, BLOCK_INSERT_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_blob(s, 1, pData, nData, SQLITE_STATIC); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_step(s); - if( rc==SQLITE_ROW ) return SQLITE_ERROR; - if( rc!=SQLITE_DONE ) return rc; - - *piBlockid = sqlite3_last_insert_rowid(v->db); - return SQLITE_OK; -} - -/* delete from %_segments -** where rowid between [iStartBlockid] and [iEndBlockid] -** -** Deletes the range of blocks, inclusive, used to delete the blocks -** which form a segment. -*/ -static int block_delete(fulltext_vtab *v, - sqlite_int64 iStartBlockid, sqlite_int64 iEndBlockid){ - sqlite3_stmt *s; - int rc = sql_get_statement(v, BLOCK_DELETE_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int64(s, 1, iStartBlockid); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int64(s, 2, iEndBlockid); - if( rc!=SQLITE_OK ) return rc; - - return sql_single_step(s); -} - -/* Returns SQLITE_ROW with *pidx set to the maximum segment idx found -** at iLevel. Returns SQLITE_DONE if there are no segments at -** iLevel. Otherwise returns an error. -*/ -static int segdir_max_index(fulltext_vtab *v, int iLevel, int *pidx){ - sqlite3_stmt *s; - int rc = sql_get_statement(v, SEGDIR_MAX_INDEX_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int(s, 1, iLevel); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_step(s); - /* Should always get at least one row due to how max() works. */ - if( rc==SQLITE_DONE ) return SQLITE_DONE; - if( rc!=SQLITE_ROW ) return rc; - - /* NULL means that there were no inputs to max(). */ - if( SQLITE_NULL==sqlite3_column_type(s, 0) ){ - rc = sqlite3_step(s); - if( rc==SQLITE_ROW ) return SQLITE_ERROR; - return rc; - } - - *pidx = sqlite3_column_int(s, 0); - - /* We expect only one row. We must execute another sqlite3_step() - * to complete the iteration; otherwise the table will remain locked. */ - rc = sqlite3_step(s); - if( rc==SQLITE_ROW ) return SQLITE_ERROR; - if( rc!=SQLITE_DONE ) return rc; - return SQLITE_ROW; -} - -/* insert into %_segdir values ( -** [iLevel], [idx], -** [iStartBlockid], [iLeavesEndBlockid], [iEndBlockid], -** [pRootData] -** ) -*/ -static int segdir_set(fulltext_vtab *v, int iLevel, int idx, - sqlite_int64 iStartBlockid, - sqlite_int64 iLeavesEndBlockid, - sqlite_int64 iEndBlockid, - const char *pRootData, int nRootData){ - sqlite3_stmt *s; - int rc = sql_get_statement(v, SEGDIR_SET_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int(s, 1, iLevel); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int(s, 2, idx); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int64(s, 3, iStartBlockid); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int64(s, 4, iLeavesEndBlockid); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int64(s, 5, iEndBlockid); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_blob(s, 6, pRootData, nRootData, SQLITE_STATIC); - if( rc!=SQLITE_OK ) return rc; - - return sql_single_step(s); -} - -/* Queries %_segdir for the block span of the segments in level -** iLevel. Returns SQLITE_DONE if there are no blocks for iLevel, -** SQLITE_ROW if there are blocks, else an error. -*/ -static int segdir_span(fulltext_vtab *v, int iLevel, - sqlite_int64 *piStartBlockid, - sqlite_int64 *piEndBlockid){ - sqlite3_stmt *s; - int rc = sql_get_statement(v, SEGDIR_SPAN_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int(s, 1, iLevel); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_step(s); - if( rc==SQLITE_DONE ) return SQLITE_DONE; /* Should never happen */ - if( rc!=SQLITE_ROW ) return rc; - - /* This happens if all segments at this level are entirely inline. */ - if( SQLITE_NULL==sqlite3_column_type(s, 0) ){ - /* We expect only one row. We must execute another sqlite3_step() - * to complete the iteration; otherwise the table will remain locked. */ - int rc2 = sqlite3_step(s); - if( rc2==SQLITE_ROW ) return SQLITE_ERROR; - return rc2; - } - - *piStartBlockid = sqlite3_column_int64(s, 0); - *piEndBlockid = sqlite3_column_int64(s, 1); - - /* We expect only one row. We must execute another sqlite3_step() - * to complete the iteration; otherwise the table will remain locked. */ - rc = sqlite3_step(s); - if( rc==SQLITE_ROW ) return SQLITE_ERROR; - if( rc!=SQLITE_DONE ) return rc; - return SQLITE_ROW; -} - -/* Delete the segment blocks and segment directory records for all -** segments at iLevel. -*/ -static int segdir_delete(fulltext_vtab *v, int iLevel){ - sqlite3_stmt *s; - sqlite_int64 iStartBlockid, iEndBlockid; - int rc = segdir_span(v, iLevel, &iStartBlockid, &iEndBlockid); - if( rc!=SQLITE_ROW && rc!=SQLITE_DONE ) return rc; - - if( rc==SQLITE_ROW ){ - rc = block_delete(v, iStartBlockid, iEndBlockid); - if( rc!=SQLITE_OK ) return rc; - } - - /* Delete the segment directory itself. */ - rc = sql_get_statement(v, SEGDIR_DELETE_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int64(s, 1, iLevel); - if( rc!=SQLITE_OK ) return rc; - - return sql_single_step(s); -} - -/* Delete entire fts index, SQLITE_OK on success, relevant error on -** failure. -*/ -static int segdir_delete_all(fulltext_vtab *v){ - sqlite3_stmt *s; - int rc = sql_get_statement(v, SEGDIR_DELETE_ALL_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sql_single_step(s); - if( rc!=SQLITE_OK ) return rc; - - rc = sql_get_statement(v, BLOCK_DELETE_ALL_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - return sql_single_step(s); -} - -/* Returns SQLITE_OK with *pnSegments set to the number of entries in -** %_segdir and *piMaxLevel set to the highest level which has a -** segment. Otherwise returns the SQLite error which caused failure. -*/ -static int segdir_count(fulltext_vtab *v, int *pnSegments, int *piMaxLevel){ - sqlite3_stmt *s; - int rc = sql_get_statement(v, SEGDIR_COUNT_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_step(s); - /* TODO(shess): This case should not be possible? Should stronger - ** measures be taken if it happens? - */ - if( rc==SQLITE_DONE ){ - *pnSegments = 0; - *piMaxLevel = 0; - return SQLITE_OK; - } - if( rc!=SQLITE_ROW ) return rc; - - *pnSegments = sqlite3_column_int(s, 0); - *piMaxLevel = sqlite3_column_int(s, 1); - - /* We expect only one row. We must execute another sqlite3_step() - * to complete the iteration; otherwise the table will remain locked. */ - rc = sqlite3_step(s); - if( rc==SQLITE_DONE ) return SQLITE_OK; - if( rc==SQLITE_ROW ) return SQLITE_ERROR; - return rc; -} - -/* TODO(shess) clearPendingTerms() is far down the file because -** writeZeroSegment() is far down the file because LeafWriter is far -** down the file. Consider refactoring the code to move the non-vtab -** code above the vtab code so that we don't need this forward -** reference. -*/ -static int clearPendingTerms(fulltext_vtab *v); - -/* -** Free the memory used to contain a fulltext_vtab structure. -*/ -static void fulltext_vtab_destroy(fulltext_vtab *v){ - int iStmt, i; - - TRACE(("FTS2 Destroy %p\n", v)); - for( iStmt=0; iStmtpFulltextStatements[iStmt]!=NULL ){ - sqlite3_finalize(v->pFulltextStatements[iStmt]); - v->pFulltextStatements[iStmt] = NULL; - } - } - - for( i=0; ipLeafSelectStmts[i]!=NULL ){ - sqlite3_finalize(v->pLeafSelectStmts[i]); - v->pLeafSelectStmts[i] = NULL; - } - } - - if( v->pTokenizer!=NULL ){ - v->pTokenizer->pModule->xDestroy(v->pTokenizer); - v->pTokenizer = NULL; - } - - clearPendingTerms(v); - - sqlite3_free(v->azColumn); - for(i = 0; i < v->nColumn; ++i) { - sqlite3_free(v->azContentColumn[i]); - } - sqlite3_free(v->azContentColumn); - sqlite3_free(v); -} - -/* -** Token types for parsing the arguments to xConnect or xCreate. -*/ -#define TOKEN_EOF 0 /* End of file */ -#define TOKEN_SPACE 1 /* Any kind of whitespace */ -#define TOKEN_ID 2 /* An identifier */ -#define TOKEN_STRING 3 /* A string literal */ -#define TOKEN_PUNCT 4 /* A single punctuation character */ - -/* -** If X is a character that can be used in an identifier then -** IdChar(X) will be true. Otherwise it is false. -** -** For ASCII, any character with the high-order bit set is -** allowed in an identifier. For 7-bit characters, -** sqlite3IsIdChar[X] must be 1. -** -** Ticket #1066. the SQL standard does not allow '$' in the -** middle of identfiers. But many SQL implementations do. -** SQLite will allow '$' in identifiers for compatibility. -** But the feature is undocumented. -*/ -static const char isIdChar[] = { -/* x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 xA xB xC xD xE xF */ - 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 2x */ - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, /* 3x */ - 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 4x */ - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, /* 5x */ - 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 6x */ - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, /* 7x */ -}; -#define IdChar(C) (((c=C)&0x80)!=0 || (c>0x1f && isIdChar[c-0x20])) - - -/* -** Return the length of the token that begins at z[0]. -** Store the token type in *tokenType before returning. -*/ -static int getToken(const char *z, int *tokenType){ - int i, c; - switch( *z ){ - case 0: { - *tokenType = TOKEN_EOF; - return 0; - } - case ' ': case '\t': case '\n': case '\f': case '\r': { - for(i=1; safe_isspace(z[i]); i++){} - *tokenType = TOKEN_SPACE; - return i; - } - case '`': - case '\'': - case '"': { - int delim = z[0]; - for(i=1; (c=z[i])!=0; i++){ - if( c==delim ){ - if( z[i+1]==delim ){ - i++; - }else{ - break; - } - } - } - *tokenType = TOKEN_STRING; - return i + (c!=0); - } - case '[': { - for(i=1, c=z[0]; c!=']' && (c=z[i])!=0; i++){} - *tokenType = TOKEN_ID; - return i; - } - default: { - if( !IdChar(*z) ){ - break; - } - for(i=1; IdChar(z[i]); i++){} - *tokenType = TOKEN_ID; - return i; - } - } - *tokenType = TOKEN_PUNCT; - return 1; -} - -/* -** A token extracted from a string is an instance of the following -** structure. -*/ -typedef struct Token { - const char *z; /* Pointer to token text. Not '\000' terminated */ - short int n; /* Length of the token text in bytes. */ -} Token; - -/* -** Given a input string (which is really one of the argv[] parameters -** passed into xConnect or xCreate) split the string up into tokens. -** Return an array of pointers to '\000' terminated strings, one string -** for each non-whitespace token. -** -** The returned array is terminated by a single NULL pointer. -** -** Space to hold the returned array is obtained from a single -** malloc and should be freed by passing the return value to free(). -** The individual strings within the token list are all a part of -** the single memory allocation and will all be freed at once. -*/ -static char **tokenizeString(const char *z, int *pnToken){ - int nToken = 0; - Token *aToken = sqlite3_malloc( strlen(z) * sizeof(aToken[0]) ); - int n = 1; - int e, i; - int totalSize = 0; - char **azToken; - char *zCopy; - while( n>0 ){ - n = getToken(z, &e); - if( e!=TOKEN_SPACE ){ - aToken[nToken].z = z; - aToken[nToken].n = n; - nToken++; - totalSize += n+1; - } - z += n; - } - azToken = (char**)sqlite3_malloc( nToken*sizeof(char*) + totalSize ); - zCopy = (char*)&azToken[nToken]; - nToken--; - for(i=0; i=0 ){ - azIn[j] = azIn[i]; - } - j++; - } - } - azIn[j] = 0; - } -} - - -/* -** Find the first alphanumeric token in the string zIn. Null-terminate -** this token. Remove any quotation marks. And return a pointer to -** the result. -*/ -static char *firstToken(char *zIn, char **pzTail){ - int n, ttype; - while(1){ - n = getToken(zIn, &ttype); - if( ttype==TOKEN_SPACE ){ - zIn += n; - }else if( ttype==TOKEN_EOF ){ - *pzTail = zIn; - return 0; - }else{ - zIn[n] = 0; - *pzTail = &zIn[1]; - dequoteString(zIn); - return zIn; - } - } - /*NOTREACHED*/ -} - -/* Return true if... -** -** * s begins with the string t, ignoring case -** * s is longer than t -** * The first character of s beyond t is not a alphanumeric -** -** Ignore leading space in *s. -** -** To put it another way, return true if the first token of -** s[] is t[]. -*/ -static int startsWith(const char *s, const char *t){ - while( safe_isspace(*s) ){ s++; } - while( *t ){ - if( safe_tolower(*s++)!=safe_tolower(*t++) ) return 0; - } - return *s!='_' && !safe_isalnum(*s); -} - -/* -** An instance of this structure defines the "spec" of a -** full text index. This structure is populated by parseSpec -** and use by fulltextConnect and fulltextCreate. -*/ -typedef struct TableSpec { - const char *zDb; /* Logical database name */ - const char *zName; /* Name of the full-text index */ - int nColumn; /* Number of columns to be indexed */ - char **azColumn; /* Original names of columns to be indexed */ - char **azContentColumn; /* Column names for %_content */ - char **azTokenizer; /* Name of tokenizer and its arguments */ -} TableSpec; - -/* -** Reclaim all of the memory used by a TableSpec -*/ -static void clearTableSpec(TableSpec *p) { - sqlite3_free(p->azColumn); - sqlite3_free(p->azContentColumn); - sqlite3_free(p->azTokenizer); -} - -/* Parse a CREATE VIRTUAL TABLE statement, which looks like this: - * - * CREATE VIRTUAL TABLE email - * USING fts2(subject, body, tokenize mytokenizer(myarg)) - * - * We return parsed information in a TableSpec structure. - * - */ -static int parseSpec(TableSpec *pSpec, int argc, const char *const*argv, - char**pzErr){ - int i, n; - char *z, *zDummy; - char **azArg; - const char *zTokenizer = 0; /* argv[] entry describing the tokenizer */ - - assert( argc>=3 ); - /* Current interface: - ** argv[0] - module name - ** argv[1] - database name - ** argv[2] - table name - ** argv[3..] - columns, optionally followed by tokenizer specification - ** and snippet delimiters specification. - */ - - /* Make a copy of the complete argv[][] array in a single allocation. - ** The argv[][] array is read-only and transient. We can write to the - ** copy in order to modify things and the copy is persistent. - */ - CLEAR(pSpec); - for(i=n=0; izDb = azArg[1]; - pSpec->zName = azArg[2]; - pSpec->nColumn = 0; - pSpec->azColumn = azArg; - zTokenizer = "tokenize simple"; - for(i=3; inColumn] = firstToken(azArg[i], &zDummy); - pSpec->nColumn++; - } - } - if( pSpec->nColumn==0 ){ - azArg[0] = "content"; - pSpec->nColumn = 1; - } - - /* - ** Construct the list of content column names. - ** - ** Each content column name will be of the form cNNAAAA - ** where NN is the column number and AAAA is the sanitized - ** column name. "sanitized" means that special characters are - ** converted to "_". The cNN prefix guarantees that all column - ** names are unique. - ** - ** The AAAA suffix is not strictly necessary. It is included - ** for the convenience of people who might examine the generated - ** %_content table and wonder what the columns are used for. - */ - pSpec->azContentColumn = sqlite3_malloc( pSpec->nColumn * sizeof(char *) ); - if( pSpec->azContentColumn==0 ){ - clearTableSpec(pSpec); - return SQLITE_NOMEM; - } - for(i=0; inColumn; i++){ - char *p; - pSpec->azContentColumn[i] = sqlite3_mprintf("c%d%s", i, azArg[i]); - for (p = pSpec->azContentColumn[i]; *p ; ++p) { - if( !safe_isalnum(*p) ) *p = '_'; - } - } - - /* - ** Parse the tokenizer specification string. - */ - pSpec->azTokenizer = tokenizeString(zTokenizer, &n); - tokenListToIdList(pSpec->azTokenizer); - - return SQLITE_OK; -} - -/* -** Generate a CREATE TABLE statement that describes the schema of -** the virtual table. Return a pointer to this schema string. -** -** Space is obtained from sqlite3_mprintf() and should be freed -** using sqlite3_free(). -*/ -static char *fulltextSchema( - int nColumn, /* Number of columns */ - const char *const* azColumn, /* List of columns */ - const char *zTableName /* Name of the table */ -){ - int i; - char *zSchema, *zNext; - const char *zSep = "("; - zSchema = sqlite3_mprintf("CREATE TABLE x"); - for(i=0; ibase */ - v->db = db; - v->zDb = spec->zDb; /* Freed when azColumn is freed */ - v->zName = spec->zName; /* Freed when azColumn is freed */ - v->nColumn = spec->nColumn; - v->azContentColumn = spec->azContentColumn; - spec->azContentColumn = 0; - v->azColumn = spec->azColumn; - spec->azColumn = 0; - - if( spec->azTokenizer==0 ){ - return SQLITE_NOMEM; - } - - zTok = spec->azTokenizer[0]; - if( !zTok ){ - zTok = "simple"; - } - nTok = strlen(zTok)+1; - - m = (sqlite3_tokenizer_module *)sqlite3Fts2HashFind(pHash, zTok, nTok); - if( !m ){ - *pzErr = sqlite3_mprintf("unknown tokenizer: %s", spec->azTokenizer[0]); - rc = SQLITE_ERROR; - goto err; - } - - for(n=0; spec->azTokenizer[n]; n++){} - if( n ){ - rc = m->xCreate(n-1, (const char*const*)&spec->azTokenizer[1], - &v->pTokenizer); - }else{ - rc = m->xCreate(0, 0, &v->pTokenizer); - } - if( rc!=SQLITE_OK ) goto err; - v->pTokenizer->pModule = m; - - /* TODO: verify the existence of backing tables foo_content, foo_term */ - - schema = fulltextSchema(v->nColumn, (const char*const*)v->azColumn, - spec->zName); - rc = sqlite3_declare_vtab(db, schema); - sqlite3_free(schema); - if( rc!=SQLITE_OK ) goto err; - - memset(v->pFulltextStatements, 0, sizeof(v->pFulltextStatements)); - - /* Indicate that the buffer is not live. */ - v->nPendingData = -1; - - *ppVTab = &v->base; - TRACE(("FTS2 Connect %p\n", v)); - - return rc; - -err: - fulltext_vtab_destroy(v); - return rc; -} - -static int fulltextConnect( - sqlite3 *db, - void *pAux, - int argc, const char *const*argv, - sqlite3_vtab **ppVTab, - char **pzErr -){ - TableSpec spec; - int rc = parseSpec(&spec, argc, argv, pzErr); - if( rc!=SQLITE_OK ) return rc; - - rc = constructVtab(db, (fts2Hash *)pAux, &spec, ppVTab, pzErr); - clearTableSpec(&spec); - return rc; -} - -/* The %_content table holds the text of each document, with -** the rowid used as the docid. -*/ -/* TODO(shess) This comment needs elaboration to match the updated -** code. Work it into the top-of-file comment at that time. -*/ -static int fulltextCreate(sqlite3 *db, void *pAux, - int argc, const char * const *argv, - sqlite3_vtab **ppVTab, char **pzErr){ - int rc; - TableSpec spec; - StringBuffer schema; - TRACE(("FTS2 Create\n")); - - rc = parseSpec(&spec, argc, argv, pzErr); - if( rc!=SQLITE_OK ) return rc; - - initStringBuffer(&schema); - append(&schema, "CREATE TABLE %_content("); - appendList(&schema, spec.nColumn, spec.azContentColumn); - append(&schema, ")"); - rc = sql_exec(db, spec.zDb, spec.zName, stringBufferData(&schema)); - stringBufferDestroy(&schema); - if( rc!=SQLITE_OK ) goto out; - - rc = sql_exec(db, spec.zDb, spec.zName, - "create table %_segments(block blob);"); - if( rc!=SQLITE_OK ) goto out; - - rc = sql_exec(db, spec.zDb, spec.zName, - "create table %_segdir(" - " level integer," - " idx integer," - " start_block integer," - " leaves_end_block integer," - " end_block integer," - " root blob," - " primary key(level, idx)" - ");"); - if( rc!=SQLITE_OK ) goto out; - - rc = constructVtab(db, (fts2Hash *)pAux, &spec, ppVTab, pzErr); - -out: - clearTableSpec(&spec); - return rc; -} - -/* Decide how to handle an SQL query. */ -static int fulltextBestIndex(sqlite3_vtab *pVTab, sqlite3_index_info *pInfo){ - int i; - TRACE(("FTS2 BestIndex\n")); - - for(i=0; inConstraint; ++i){ - const struct sqlite3_index_constraint *pConstraint; - pConstraint = &pInfo->aConstraint[i]; - if( pConstraint->usable ) { - if( pConstraint->iColumn==-1 && - pConstraint->op==SQLITE_INDEX_CONSTRAINT_EQ ){ - pInfo->idxNum = QUERY_ROWID; /* lookup by rowid */ - TRACE(("FTS2 QUERY_ROWID\n")); - } else if( pConstraint->iColumn>=0 && - pConstraint->op==SQLITE_INDEX_CONSTRAINT_MATCH ){ - /* full-text search */ - pInfo->idxNum = QUERY_FULLTEXT + pConstraint->iColumn; - TRACE(("FTS2 QUERY_FULLTEXT %d\n", pConstraint->iColumn)); - } else continue; - - pInfo->aConstraintUsage[i].argvIndex = 1; - pInfo->aConstraintUsage[i].omit = 1; - - /* An arbitrary value for now. - * TODO: Perhaps rowid matches should be considered cheaper than - * full-text searches. */ - pInfo->estimatedCost = 1.0; - - return SQLITE_OK; - } - } - pInfo->idxNum = QUERY_GENERIC; - return SQLITE_OK; -} - -static int fulltextDisconnect(sqlite3_vtab *pVTab){ - TRACE(("FTS2 Disconnect %p\n", pVTab)); - fulltext_vtab_destroy((fulltext_vtab *)pVTab); - return SQLITE_OK; -} - -static int fulltextDestroy(sqlite3_vtab *pVTab){ - fulltext_vtab *v = (fulltext_vtab *)pVTab; - int rc; - - TRACE(("FTS2 Destroy %p\n", pVTab)); - rc = sql_exec(v->db, v->zDb, v->zName, - "drop table if exists %_content;" - "drop table if exists %_segments;" - "drop table if exists %_segdir;" - ); - if( rc!=SQLITE_OK ) return rc; - - fulltext_vtab_destroy((fulltext_vtab *)pVTab); - return SQLITE_OK; -} - -static int fulltextOpen(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor){ - fulltext_cursor *c; - - c = (fulltext_cursor *) sqlite3_malloc(sizeof(fulltext_cursor)); - if( c ){ - memset(c, 0, sizeof(fulltext_cursor)); - /* sqlite will initialize c->base */ - *ppCursor = &c->base; - TRACE(("FTS2 Open %p: %p\n", pVTab, c)); - return SQLITE_OK; - }else{ - return SQLITE_NOMEM; - } -} - - -/* Free all of the dynamically allocated memory held by *q -*/ -static void queryClear(Query *q){ - int i; - for(i = 0; i < q->nTerms; ++i){ - sqlite3_free(q->pTerms[i].pTerm); - } - sqlite3_free(q->pTerms); - CLEAR(q); -} - -/* Free all of the dynamically allocated memory held by the -** Snippet -*/ -static void snippetClear(Snippet *p){ - sqlite3_free(p->aMatch); - sqlite3_free(p->zOffset); - sqlite3_free(p->zSnippet); - CLEAR(p); -} -/* -** Append a single entry to the p->aMatch[] log. -*/ -static void snippetAppendMatch( - Snippet *p, /* Append the entry to this snippet */ - int iCol, int iTerm, /* The column and query term */ - int iStart, int nByte /* Offset and size of the match */ -){ - int i; - struct snippetMatch *pMatch; - if( p->nMatch+1>=p->nAlloc ){ - p->nAlloc = p->nAlloc*2 + 10; - p->aMatch = sqlite3_realloc(p->aMatch, p->nAlloc*sizeof(p->aMatch[0]) ); - if( p->aMatch==0 ){ - p->nMatch = 0; - p->nAlloc = 0; - return; - } - } - i = p->nMatch++; - pMatch = &p->aMatch[i]; - pMatch->iCol = iCol; - pMatch->iTerm = iTerm; - pMatch->iStart = iStart; - pMatch->nByte = nByte; -} - -/* -** Sizing information for the circular buffer used in snippetOffsetsOfColumn() -*/ -#define FTS2_ROTOR_SZ (32) -#define FTS2_ROTOR_MASK (FTS2_ROTOR_SZ-1) - -/* -** Add entries to pSnippet->aMatch[] for every match that occurs against -** document zDoc[0..nDoc-1] which is stored in column iColumn. -*/ -static void snippetOffsetsOfColumn( - Query *pQuery, - Snippet *pSnippet, - int iColumn, - const char *zDoc, - int nDoc -){ - const sqlite3_tokenizer_module *pTModule; /* The tokenizer module */ - sqlite3_tokenizer *pTokenizer; /* The specific tokenizer */ - sqlite3_tokenizer_cursor *pTCursor; /* Tokenizer cursor */ - fulltext_vtab *pVtab; /* The full text index */ - int nColumn; /* Number of columns in the index */ - const QueryTerm *aTerm; /* Query string terms */ - int nTerm; /* Number of query string terms */ - int i, j; /* Loop counters */ - int rc; /* Return code */ - unsigned int match, prevMatch; /* Phrase search bitmasks */ - const char *zToken; /* Next token from the tokenizer */ - int nToken; /* Size of zToken */ - int iBegin, iEnd, iPos; /* Offsets of beginning and end */ - - /* The following variables keep a circular buffer of the last - ** few tokens */ - unsigned int iRotor = 0; /* Index of current token */ - int iRotorBegin[FTS2_ROTOR_SZ]; /* Beginning offset of token */ - int iRotorLen[FTS2_ROTOR_SZ]; /* Length of token */ - - pVtab = pQuery->pFts; - nColumn = pVtab->nColumn; - pTokenizer = pVtab->pTokenizer; - pTModule = pTokenizer->pModule; - rc = pTModule->xOpen(pTokenizer, zDoc, nDoc, &pTCursor); - if( rc ) return; - pTCursor->pTokenizer = pTokenizer; - aTerm = pQuery->pTerms; - nTerm = pQuery->nTerms; - if( nTerm>=FTS2_ROTOR_SZ ){ - nTerm = FTS2_ROTOR_SZ - 1; - } - prevMatch = 0; - while(1){ - rc = pTModule->xNext(pTCursor, &zToken, &nToken, &iBegin, &iEnd, &iPos); - if( rc ) break; - iRotorBegin[iRotor&FTS2_ROTOR_MASK] = iBegin; - iRotorLen[iRotor&FTS2_ROTOR_MASK] = iEnd-iBegin; - match = 0; - for(i=0; i=0 && iColnToken ) continue; - if( !aTerm[i].isPrefix && aTerm[i].nTerm1 && (prevMatch & (1<=0; j--){ - int k = (iRotor-j) & FTS2_ROTOR_MASK; - snippetAppendMatch(pSnippet, iColumn, i-j, - iRotorBegin[k], iRotorLen[k]); - } - } - } - prevMatch = match<<1; - iRotor++; - } - pTModule->xClose(pTCursor); -} - - -/* -** Compute all offsets for the current row of the query. -** If the offsets have already been computed, this routine is a no-op. -*/ -static void snippetAllOffsets(fulltext_cursor *p){ - int nColumn; - int iColumn, i; - int iFirst, iLast; - fulltext_vtab *pFts; - - if( p->snippet.nMatch ) return; - if( p->q.nTerms==0 ) return; - pFts = p->q.pFts; - nColumn = pFts->nColumn; - iColumn = (p->iCursorType - QUERY_FULLTEXT); - if( iColumn<0 || iColumn>=nColumn ){ - iFirst = 0; - iLast = nColumn-1; - }else{ - iFirst = iColumn; - iLast = iColumn; - } - for(i=iFirst; i<=iLast; i++){ - const char *zDoc; - int nDoc; - zDoc = (const char*)sqlite3_column_text(p->pStmt, i+1); - nDoc = sqlite3_column_bytes(p->pStmt, i+1); - snippetOffsetsOfColumn(&p->q, &p->snippet, i, zDoc, nDoc); - } -} - -/* -** Convert the information in the aMatch[] array of the snippet -** into the string zOffset[0..nOffset-1]. -*/ -static void snippetOffsetText(Snippet *p){ - int i; - int cnt = 0; - StringBuffer sb; - char zBuf[200]; - if( p->zOffset ) return; - initStringBuffer(&sb); - for(i=0; inMatch; i++){ - struct snippetMatch *pMatch = &p->aMatch[i]; - zBuf[0] = ' '; - sqlite3_snprintf(sizeof(zBuf)-1, &zBuf[cnt>0], "%d %d %d %d", - pMatch->iCol, pMatch->iTerm, pMatch->iStart, pMatch->nByte); - append(&sb, zBuf); - cnt++; - } - p->zOffset = stringBufferData(&sb); - p->nOffset = stringBufferLength(&sb); -} - -/* -** zDoc[0..nDoc-1] is phrase of text. aMatch[0..nMatch-1] are a set -** of matching words some of which might be in zDoc. zDoc is column -** number iCol. -** -** iBreak is suggested spot in zDoc where we could begin or end an -** excerpt. Return a value similar to iBreak but possibly adjusted -** to be a little left or right so that the break point is better. -*/ -static int wordBoundary( - int iBreak, /* The suggested break point */ - const char *zDoc, /* Document text */ - int nDoc, /* Number of bytes in zDoc[] */ - struct snippetMatch *aMatch, /* Matching words */ - int nMatch, /* Number of entries in aMatch[] */ - int iCol /* The column number for zDoc[] */ -){ - int i; - if( iBreak<=10 ){ - return 0; - } - if( iBreak>=nDoc-10 ){ - return nDoc; - } - for(i=0; i0 && aMatch[i-1].iStart+aMatch[i-1].nByte>=iBreak ){ - return aMatch[i-1].iStart; - } - } - for(i=1; i<=10; i++){ - if( safe_isspace(zDoc[iBreak-i]) ){ - return iBreak - i + 1; - } - if( safe_isspace(zDoc[iBreak+i]) ){ - return iBreak + i + 1; - } - } - return iBreak; -} - - - -/* -** Allowed values for Snippet.aMatch[].snStatus -*/ -#define SNIPPET_IGNORE 0 /* It is ok to omit this match from the snippet */ -#define SNIPPET_DESIRED 1 /* We want to include this match in the snippet */ - -/* -** Generate the text of a snippet. -*/ -static void snippetText( - fulltext_cursor *pCursor, /* The cursor we need the snippet for */ - const char *zStartMark, /* Markup to appear before each match */ - const char *zEndMark, /* Markup to appear after each match */ - const char *zEllipsis /* Ellipsis mark */ -){ - int i, j; - struct snippetMatch *aMatch; - int nMatch; - int nDesired; - StringBuffer sb; - int tailCol; - int tailOffset; - int iCol; - int nDoc; - const char *zDoc; - int iStart, iEnd; - int tailEllipsis = 0; - int iMatch; - - - sqlite3_free(pCursor->snippet.zSnippet); - pCursor->snippet.zSnippet = 0; - aMatch = pCursor->snippet.aMatch; - nMatch = pCursor->snippet.nMatch; - initStringBuffer(&sb); - - for(i=0; iq.nTerms; i++){ - for(j=0; j0; i++){ - if( aMatch[i].snStatus!=SNIPPET_DESIRED ) continue; - nDesired--; - iCol = aMatch[i].iCol; - zDoc = (const char*)sqlite3_column_text(pCursor->pStmt, iCol+1); - nDoc = sqlite3_column_bytes(pCursor->pStmt, iCol+1); - iStart = aMatch[i].iStart - 40; - iStart = wordBoundary(iStart, zDoc, nDoc, aMatch, nMatch, iCol); - if( iStart<=10 ){ - iStart = 0; - } - if( iCol==tailCol && iStart<=tailOffset+20 ){ - iStart = tailOffset; - } - if( (iCol!=tailCol && tailCol>=0) || iStart!=tailOffset ){ - trimWhiteSpace(&sb); - appendWhiteSpace(&sb); - append(&sb, zEllipsis); - appendWhiteSpace(&sb); - } - iEnd = aMatch[i].iStart + aMatch[i].nByte + 40; - iEnd = wordBoundary(iEnd, zDoc, nDoc, aMatch, nMatch, iCol); - if( iEnd>=nDoc-10 ){ - iEnd = nDoc; - tailEllipsis = 0; - }else{ - tailEllipsis = 1; - } - while( iMatchsnippet.zSnippet = stringBufferData(&sb); - pCursor->snippet.nSnippet = stringBufferLength(&sb); -} - - -/* -** Close the cursor. For additional information see the documentation -** on the xClose method of the virtual table interface. -*/ -static int fulltextClose(sqlite3_vtab_cursor *pCursor){ - fulltext_cursor *c = (fulltext_cursor *) pCursor; - TRACE(("FTS2 Close %p\n", c)); - sqlite3_finalize(c->pStmt); - queryClear(&c->q); - snippetClear(&c->snippet); - if( c->result.nData!=0 ) dlrDestroy(&c->reader); - dataBufferDestroy(&c->result); - sqlite3_free(c); - return SQLITE_OK; -} - -static int fulltextNext(sqlite3_vtab_cursor *pCursor){ - fulltext_cursor *c = (fulltext_cursor *) pCursor; - int rc; - - TRACE(("FTS2 Next %p\n", pCursor)); - snippetClear(&c->snippet); - if( c->iCursorType < QUERY_FULLTEXT ){ - /* TODO(shess) Handle SQLITE_SCHEMA AND SQLITE_BUSY. */ - rc = sqlite3_step(c->pStmt); - switch( rc ){ - case SQLITE_ROW: - c->eof = 0; - return SQLITE_OK; - case SQLITE_DONE: - c->eof = 1; - return SQLITE_OK; - default: - c->eof = 1; - return rc; - } - } else { /* full-text query */ - rc = sqlite3_reset(c->pStmt); - if( rc!=SQLITE_OK ) return rc; - - if( c->result.nData==0 || dlrAtEnd(&c->reader) ){ - c->eof = 1; - return SQLITE_OK; - } - rc = sqlite3_bind_int64(c->pStmt, 1, dlrDocid(&c->reader)); - dlrStep(&c->reader); - if( rc!=SQLITE_OK ) return rc; - /* TODO(shess) Handle SQLITE_SCHEMA AND SQLITE_BUSY. */ - rc = sqlite3_step(c->pStmt); - if( rc==SQLITE_ROW ){ /* the case we expect */ - c->eof = 0; - return SQLITE_OK; - } - /* an error occurred; abort */ - return rc==SQLITE_DONE ? SQLITE_ERROR : rc; - } -} - - -/* TODO(shess) If we pushed LeafReader to the top of the file, or to -** another file, term_select() could be pushed above -** docListOfTerm(). -*/ -static int termSelect(fulltext_vtab *v, int iColumn, - const char *pTerm, int nTerm, int isPrefix, - DocListType iType, DataBuffer *out); - -/* Return a DocList corresponding to the query term *pTerm. If *pTerm -** is the first term of a phrase query, go ahead and evaluate the phrase -** query and return the doclist for the entire phrase query. -** -** The resulting DL_DOCIDS doclist is stored in pResult, which is -** overwritten. -*/ -static int docListOfTerm( - fulltext_vtab *v, /* The full text index */ - int iColumn, /* column to restrict to. No restriction if >=nColumn */ - QueryTerm *pQTerm, /* Term we are looking for, or 1st term of a phrase */ - DataBuffer *pResult /* Write the result here */ -){ - DataBuffer left, right, new; - int i, rc; - - /* No phrase search if no position info. */ - assert( pQTerm->nPhrase==0 || DL_DEFAULT!=DL_DOCIDS ); - - /* This code should never be called with buffered updates. */ - assert( v->nPendingData<0 ); - - dataBufferInit(&left, 0); - rc = termSelect(v, iColumn, pQTerm->pTerm, pQTerm->nTerm, pQTerm->isPrefix, - 0nPhrase ? DL_POSITIONS : DL_DOCIDS, &left); - if( rc ) return rc; - for(i=1; i<=pQTerm->nPhrase && left.nData>0; i++){ - dataBufferInit(&right, 0); - rc = termSelect(v, iColumn, pQTerm[i].pTerm, pQTerm[i].nTerm, - pQTerm[i].isPrefix, DL_POSITIONS, &right); - if( rc ){ - dataBufferDestroy(&left); - return rc; - } - dataBufferInit(&new, 0); - docListPhraseMerge(left.pData, left.nData, right.pData, right.nData, - inPhrase ? DL_POSITIONS : DL_DOCIDS, &new); - dataBufferDestroy(&left); - dataBufferDestroy(&right); - left = new; - } - *pResult = left; - return SQLITE_OK; -} - -/* Add a new term pTerm[0..nTerm-1] to the query *q. -*/ -static void queryAdd(Query *q, const char *pTerm, int nTerm){ - QueryTerm *t; - ++q->nTerms; - q->pTerms = sqlite3_realloc(q->pTerms, q->nTerms * sizeof(q->pTerms[0])); - if( q->pTerms==0 ){ - q->nTerms = 0; - return; - } - t = &q->pTerms[q->nTerms - 1]; - CLEAR(t); - t->pTerm = sqlite3_malloc(nTerm+1); - memcpy(t->pTerm, pTerm, nTerm); - t->pTerm[nTerm] = 0; - t->nTerm = nTerm; - t->isOr = q->nextIsOr; - t->isPrefix = 0; - q->nextIsOr = 0; - t->iColumn = q->nextColumn; - q->nextColumn = q->dfltColumn; -} - -/* -** Check to see if the string zToken[0...nToken-1] matches any -** column name in the virtual table. If it does, -** return the zero-indexed column number. If not, return -1. -*/ -static int checkColumnSpecifier( - fulltext_vtab *pVtab, /* The virtual table */ - const char *zToken, /* Text of the token */ - int nToken /* Number of characters in the token */ -){ - int i; - for(i=0; inColumn; i++){ - if( memcmp(pVtab->azColumn[i], zToken, nToken)==0 - && pVtab->azColumn[i][nToken]==0 ){ - return i; - } - } - return -1; -} - -/* -** Parse the text at pSegment[0..nSegment-1]. Add additional terms -** to the query being assemblied in pQuery. -** -** inPhrase is true if pSegment[0..nSegement-1] is contained within -** double-quotes. If inPhrase is true, then the first term -** is marked with the number of terms in the phrase less one and -** OR and "-" syntax is ignored. If inPhrase is false, then every -** term found is marked with nPhrase=0 and OR and "-" syntax is significant. -*/ -static int tokenizeSegment( - sqlite3_tokenizer *pTokenizer, /* The tokenizer to use */ - const char *pSegment, int nSegment, /* Query expression being parsed */ - int inPhrase, /* True if within "..." */ - Query *pQuery /* Append results here */ -){ - const sqlite3_tokenizer_module *pModule = pTokenizer->pModule; - sqlite3_tokenizer_cursor *pCursor; - int firstIndex = pQuery->nTerms; - int iCol; - int nTerm = 1; - - int rc = pModule->xOpen(pTokenizer, pSegment, nSegment, &pCursor); - if( rc!=SQLITE_OK ) return rc; - pCursor->pTokenizer = pTokenizer; - - while( 1 ){ - const char *pToken; - int nToken, iBegin, iEnd, iPos; - - rc = pModule->xNext(pCursor, - &pToken, &nToken, - &iBegin, &iEnd, &iPos); - if( rc!=SQLITE_OK ) break; - if( !inPhrase && - pSegment[iEnd]==':' && - (iCol = checkColumnSpecifier(pQuery->pFts, pToken, nToken))>=0 ){ - pQuery->nextColumn = iCol; - continue; - } - if( !inPhrase && pQuery->nTerms>0 && nToken==2 - && pSegment[iBegin]=='O' && pSegment[iBegin+1]=='R' ){ - pQuery->nextIsOr = 1; - continue; - } - queryAdd(pQuery, pToken, nToken); - if( !inPhrase && iBegin>0 && pSegment[iBegin-1]=='-' ){ - pQuery->pTerms[pQuery->nTerms-1].isNot = 1; - } - if( iEndpTerms[pQuery->nTerms-1].isPrefix = 1; - } - pQuery->pTerms[pQuery->nTerms-1].iPhrase = nTerm; - if( inPhrase ){ - nTerm++; - } - } - - if( inPhrase && pQuery->nTerms>firstIndex ){ - pQuery->pTerms[firstIndex].nPhrase = pQuery->nTerms - firstIndex - 1; - } - - return pModule->xClose(pCursor); -} - -/* Parse a query string, yielding a Query object pQuery. -** -** The calling function will need to queryClear() to clean up -** the dynamically allocated memory held by pQuery. -*/ -static int parseQuery( - fulltext_vtab *v, /* The fulltext index */ - const char *zInput, /* Input text of the query string */ - int nInput, /* Size of the input text */ - int dfltColumn, /* Default column of the index to match against */ - Query *pQuery /* Write the parse results here. */ -){ - int iInput, inPhrase = 0; - - if( zInput==0 ) nInput = 0; - if( nInput<0 ) nInput = strlen(zInput); - pQuery->nTerms = 0; - pQuery->pTerms = NULL; - pQuery->nextIsOr = 0; - pQuery->nextColumn = dfltColumn; - pQuery->dfltColumn = dfltColumn; - pQuery->pFts = v; - - for(iInput=0; iInputiInput ){ - tokenizeSegment(v->pTokenizer, zInput+iInput, i-iInput, inPhrase, - pQuery); - } - iInput = i; - if( i=nColumn -** they are allowed to match against any column. -*/ -static int fulltextQuery( - fulltext_vtab *v, /* The full text index */ - int iColumn, /* Match against this column by default */ - const char *zInput, /* The query string */ - int nInput, /* Number of bytes in zInput[] */ - DataBuffer *pResult, /* Write the result doclist here */ - Query *pQuery /* Put parsed query string here */ -){ - int i, iNext, rc; - DataBuffer left, right, or, new; - int nNot = 0; - QueryTerm *aTerm; - - /* TODO(shess) Instead of flushing pendingTerms, we could query for - ** the relevant term and merge the doclist into what we receive from - ** the database. Wait and see if this is a common issue, first. - ** - ** A good reason not to flush is to not generate update-related - ** error codes from here. - */ - - /* Flush any buffered updates before executing the query. */ - rc = flushPendingTerms(v); - if( rc!=SQLITE_OK ) return rc; - - /* TODO(shess) I think that the queryClear() calls below are not - ** necessary, because fulltextClose() already clears the query. - */ - rc = parseQuery(v, zInput, nInput, iColumn, pQuery); - if( rc!=SQLITE_OK ) return rc; - - /* Empty or NULL queries return no results. */ - if( pQuery->nTerms==0 ){ - dataBufferInit(pResult, 0); - return SQLITE_OK; - } - - /* Merge AND terms. */ - /* TODO(shess) I think we can early-exit if( i>nNot && left.nData==0 ). */ - aTerm = pQuery->pTerms; - for(i = 0; inTerms; i=iNext){ - if( aTerm[i].isNot ){ - /* Handle all NOT terms in a separate pass */ - nNot++; - iNext = i + aTerm[i].nPhrase+1; - continue; - } - iNext = i + aTerm[i].nPhrase + 1; - rc = docListOfTerm(v, aTerm[i].iColumn, &aTerm[i], &right); - if( rc ){ - if( i!=nNot ) dataBufferDestroy(&left); - queryClear(pQuery); - return rc; - } - while( iNextnTerms && aTerm[iNext].isOr ){ - rc = docListOfTerm(v, aTerm[iNext].iColumn, &aTerm[iNext], &or); - iNext += aTerm[iNext].nPhrase + 1; - if( rc ){ - if( i!=nNot ) dataBufferDestroy(&left); - dataBufferDestroy(&right); - queryClear(pQuery); - return rc; - } - dataBufferInit(&new, 0); - docListOrMerge(right.pData, right.nData, or.pData, or.nData, &new); - dataBufferDestroy(&right); - dataBufferDestroy(&or); - right = new; - } - if( i==nNot ){ /* first term processed. */ - left = right; - }else{ - dataBufferInit(&new, 0); - docListAndMerge(left.pData, left.nData, right.pData, right.nData, &new); - dataBufferDestroy(&right); - dataBufferDestroy(&left); - left = new; - } - } - - if( nNot==pQuery->nTerms ){ - /* We do not yet know how to handle a query of only NOT terms */ - return SQLITE_ERROR; - } - - /* Do the EXCEPT terms */ - for(i=0; inTerms; i += aTerm[i].nPhrase + 1){ - if( !aTerm[i].isNot ) continue; - rc = docListOfTerm(v, aTerm[i].iColumn, &aTerm[i], &right); - if( rc ){ - queryClear(pQuery); - dataBufferDestroy(&left); - return rc; - } - dataBufferInit(&new, 0); - docListExceptMerge(left.pData, left.nData, right.pData, right.nData, &new); - dataBufferDestroy(&right); - dataBufferDestroy(&left); - left = new; - } - - *pResult = left; - return rc; -} - -/* -** This is the xFilter interface for the virtual table. See -** the virtual table xFilter method documentation for additional -** information. -** -** If idxNum==QUERY_GENERIC then do a full table scan against -** the %_content table. -** -** If idxNum==QUERY_ROWID then do a rowid lookup for a single entry -** in the %_content table. -** -** If idxNum>=QUERY_FULLTEXT then use the full text index. The -** column on the left-hand side of the MATCH operator is column -** number idxNum-QUERY_FULLTEXT, 0 indexed. argv[0] is the right-hand -** side of the MATCH operator. -*/ -/* TODO(shess) Upgrade the cursor initialization and destruction to -** account for fulltextFilter() being called multiple times on the -** same cursor. The current solution is very fragile. Apply fix to -** fts2 as appropriate. -*/ -static int fulltextFilter( - sqlite3_vtab_cursor *pCursor, /* The cursor used for this query */ - int idxNum, const char *idxStr, /* Which indexing scheme to use */ - int argc, sqlite3_value **argv /* Arguments for the indexing scheme */ -){ - fulltext_cursor *c = (fulltext_cursor *) pCursor; - fulltext_vtab *v = cursor_vtab(c); - int rc; - - TRACE(("FTS2 Filter %p\n",pCursor)); - - /* If the cursor has a statement that was not prepared according to - ** idxNum, clear it. I believe all calls to fulltextFilter with a - ** given cursor will have the same idxNum , but in this case it's - ** easy to be safe. - */ - if( c->pStmt && c->iCursorType!=idxNum ){ - sqlite3_finalize(c->pStmt); - c->pStmt = NULL; - } - - /* Get a fresh statement appropriate to idxNum. */ - /* TODO(shess): Add a prepared-statement cache in the vt structure. - ** The cache must handle multiple open cursors. Easier to cache the - ** statement variants at the vt to reduce malloc/realloc/free here. - ** Or we could have a StringBuffer variant which allowed stack - ** construction for small values. - */ - if( !c->pStmt ){ - char *zSql = sqlite3_mprintf("select rowid, * from %%_content %s", - idxNum==QUERY_GENERIC ? "" : "where rowid=?"); - rc = sql_prepare(v->db, v->zDb, v->zName, &c->pStmt, zSql); - sqlite3_free(zSql); - if( rc!=SQLITE_OK ) return rc; - c->iCursorType = idxNum; - }else{ - sqlite3_reset(c->pStmt); - assert( c->iCursorType==idxNum ); - } - - switch( idxNum ){ - case QUERY_GENERIC: - break; - - case QUERY_ROWID: - rc = sqlite3_bind_int64(c->pStmt, 1, sqlite3_value_int64(argv[0])); - if( rc!=SQLITE_OK ) return rc; - break; - - default: /* full-text search */ - { - const char *zQuery = (const char *)sqlite3_value_text(argv[0]); - assert( idxNum<=QUERY_FULLTEXT+v->nColumn); - assert( argc==1 ); - queryClear(&c->q); - if( c->result.nData!=0 ){ - /* This case happens if the same cursor is used repeatedly. */ - dlrDestroy(&c->reader); - dataBufferReset(&c->result); - }else{ - dataBufferInit(&c->result, 0); - } - rc = fulltextQuery(v, idxNum-QUERY_FULLTEXT, zQuery, -1, &c->result, &c->q); - if( rc!=SQLITE_OK ) return rc; - if( c->result.nData!=0 ){ - dlrInit(&c->reader, DL_DOCIDS, c->result.pData, c->result.nData); - } - break; - } - } - - return fulltextNext(pCursor); -} - -/* This is the xEof method of the virtual table. The SQLite core -** calls this routine to find out if it has reached the end of -** a query's results set. -*/ -static int fulltextEof(sqlite3_vtab_cursor *pCursor){ - fulltext_cursor *c = (fulltext_cursor *) pCursor; - return c->eof; -} - -/* This is the xColumn method of the virtual table. The SQLite -** core calls this method during a query when it needs the value -** of a column from the virtual table. This method needs to use -** one of the sqlite3_result_*() routines to store the requested -** value back in the pContext. -*/ -static int fulltextColumn(sqlite3_vtab_cursor *pCursor, - sqlite3_context *pContext, int idxCol){ - fulltext_cursor *c = (fulltext_cursor *) pCursor; - fulltext_vtab *v = cursor_vtab(c); - - if( idxColnColumn ){ - sqlite3_value *pVal = sqlite3_column_value(c->pStmt, idxCol+1); - sqlite3_result_value(pContext, pVal); - }else if( idxCol==v->nColumn ){ - /* The extra column whose name is the same as the table. - ** Return a blob which is a pointer to the cursor - */ - sqlite3_result_blob(pContext, &c, sizeof(c), SQLITE_TRANSIENT); - } - return SQLITE_OK; -} - -/* This is the xRowid method. The SQLite core calls this routine to -** retrive the rowid for the current row of the result set. The -** rowid should be written to *pRowid. -*/ -static int fulltextRowid(sqlite3_vtab_cursor *pCursor, sqlite_int64 *pRowid){ - fulltext_cursor *c = (fulltext_cursor *) pCursor; - - *pRowid = sqlite3_column_int64(c->pStmt, 0); - return SQLITE_OK; -} - -/* Add all terms in [zText] to pendingTerms table. If [iColumn] > 0, -** we also store positions and offsets in the hash table using that -** column number. -*/ -static int buildTerms(fulltext_vtab *v, sqlite_int64 iDocid, - const char *zText, int iColumn){ - sqlite3_tokenizer *pTokenizer = v->pTokenizer; - sqlite3_tokenizer_cursor *pCursor; - const char *pToken; - int nTokenBytes; - int iStartOffset, iEndOffset, iPosition; - int rc; - - rc = pTokenizer->pModule->xOpen(pTokenizer, zText, -1, &pCursor); - if( rc!=SQLITE_OK ) return rc; - - pCursor->pTokenizer = pTokenizer; - while( SQLITE_OK==(rc=pTokenizer->pModule->xNext(pCursor, - &pToken, &nTokenBytes, - &iStartOffset, &iEndOffset, - &iPosition)) ){ - DLCollector *p; - int nData; /* Size of doclist before our update. */ - - /* Positions can't be negative; we use -1 as a terminator - * internally. Token can't be NULL or empty. */ - if( iPosition<0 || pToken == NULL || nTokenBytes == 0 ){ - rc = SQLITE_ERROR; - break; - } - - p = fts2HashFind(&v->pendingTerms, pToken, nTokenBytes); - if( p==NULL ){ - nData = 0; - p = dlcNew(iDocid, DL_DEFAULT); - fts2HashInsert(&v->pendingTerms, pToken, nTokenBytes, p); - - /* Overhead for our hash table entry, the key, and the value. */ - v->nPendingData += sizeof(struct fts2HashElem)+sizeof(*p)+nTokenBytes; - }else{ - nData = p->b.nData; - if( p->dlw.iPrevDocid!=iDocid ) dlcNext(p, iDocid); - } - if( iColumn>=0 ){ - dlcAddPos(p, iColumn, iPosition, iStartOffset, iEndOffset); - } - - /* Accumulate data added by dlcNew or dlcNext, and dlcAddPos. */ - v->nPendingData += p->b.nData-nData; - } - - /* TODO(shess) Check return? Should this be able to cause errors at - ** this point? Actually, same question about sqlite3_finalize(), - ** though one could argue that failure there means that the data is - ** not durable. *ponder* - */ - pTokenizer->pModule->xClose(pCursor); - if( SQLITE_DONE == rc ) return SQLITE_OK; - return rc; -} - -/* Add doclists for all terms in [pValues] to pendingTerms table. */ -static int insertTerms(fulltext_vtab *v, sqlite_int64 iRowid, - sqlite3_value **pValues){ - int i; - for(i = 0; i < v->nColumn ; ++i){ - char *zText = (char*)sqlite3_value_text(pValues[i]); - int rc = buildTerms(v, iRowid, zText, i); - if( rc!=SQLITE_OK ) return rc; - } - return SQLITE_OK; -} - -/* Add empty doclists for all terms in the given row's content to -** pendingTerms. -*/ -static int deleteTerms(fulltext_vtab *v, sqlite_int64 iRowid){ - const char **pValues; - int i, rc; - - /* TODO(shess) Should we allow such tables at all? */ - if( DL_DEFAULT==DL_DOCIDS ) return SQLITE_ERROR; - - rc = content_select(v, iRowid, &pValues); - if( rc!=SQLITE_OK ) return rc; - - for(i = 0 ; i < v->nColumn; ++i) { - rc = buildTerms(v, iRowid, pValues[i], -1); - if( rc!=SQLITE_OK ) break; - } - - freeStringArray(v->nColumn, pValues); - return SQLITE_OK; -} - -/* TODO(shess) Refactor the code to remove this forward decl. */ -static int initPendingTerms(fulltext_vtab *v, sqlite_int64 iDocid); - -/* Insert a row into the %_content table; set *piRowid to be the ID of the -** new row. Add doclists for terms to pendingTerms. -*/ -static int index_insert(fulltext_vtab *v, sqlite3_value *pRequestRowid, - sqlite3_value **pValues, sqlite_int64 *piRowid){ - int rc; - - rc = content_insert(v, pRequestRowid, pValues); /* execute an SQL INSERT */ - if( rc!=SQLITE_OK ) return rc; - - *piRowid = sqlite3_last_insert_rowid(v->db); - rc = initPendingTerms(v, *piRowid); - if( rc!=SQLITE_OK ) return rc; - - return insertTerms(v, *piRowid, pValues); -} - -/* Delete a row from the %_content table; add empty doclists for terms -** to pendingTerms. -*/ -static int index_delete(fulltext_vtab *v, sqlite_int64 iRow){ - int rc = initPendingTerms(v, iRow); - if( rc!=SQLITE_OK ) return rc; - - rc = deleteTerms(v, iRow); - if( rc!=SQLITE_OK ) return rc; - - return content_delete(v, iRow); /* execute an SQL DELETE */ -} - -/* Update a row in the %_content table; add delete doclists to -** pendingTerms for old terms not in the new data, add insert doclists -** to pendingTerms for terms in the new data. -*/ -static int index_update(fulltext_vtab *v, sqlite_int64 iRow, - sqlite3_value **pValues){ - int rc = initPendingTerms(v, iRow); - if( rc!=SQLITE_OK ) return rc; - - /* Generate an empty doclist for each term that previously appeared in this - * row. */ - rc = deleteTerms(v, iRow); - if( rc!=SQLITE_OK ) return rc; - - rc = content_update(v, pValues, iRow); /* execute an SQL UPDATE */ - if( rc!=SQLITE_OK ) return rc; - - /* Now add positions for terms which appear in the updated row. */ - return insertTerms(v, iRow, pValues); -} - -/*******************************************************************/ -/* InteriorWriter is used to collect terms and block references into -** interior nodes in %_segments. See commentary at top of file for -** format. -*/ - -/* How large interior nodes can grow. */ -#define INTERIOR_MAX 2048 - -/* Minimum number of terms per interior node (except the root). This -** prevents large terms from making the tree too skinny - must be >0 -** so that the tree always makes progress. Note that the min tree -** fanout will be INTERIOR_MIN_TERMS+1. -*/ -#define INTERIOR_MIN_TERMS 7 -#if INTERIOR_MIN_TERMS<1 -# error INTERIOR_MIN_TERMS must be greater than 0. -#endif - -/* ROOT_MAX controls how much data is stored inline in the segment -** directory. -*/ -/* TODO(shess) Push ROOT_MAX down to whoever is writing things. It's -** only here so that interiorWriterRootInfo() and leafWriterRootInfo() -** can both see it, but if the caller passed it in, we wouldn't even -** need a define. -*/ -#define ROOT_MAX 1024 -#if ROOT_MAXterm, 0); - dataBufferReplace(&block->term, pTerm, nTerm); - - n = putVarint(c, iHeight); - n += putVarint(c+n, iChildBlock); - dataBufferInit(&block->data, INTERIOR_MAX); - dataBufferReplace(&block->data, c, n); - } - return block; -} - -#ifndef NDEBUG -/* Verify that the data is readable as an interior node. */ -static void interiorBlockValidate(InteriorBlock *pBlock){ - const char *pData = pBlock->data.pData; - int nData = pBlock->data.nData; - int n, iDummy; - sqlite_int64 iBlockid; - - assert( nData>0 ); - assert( pData!=0 ); - assert( pData+nData>pData ); - - /* Must lead with height of node as a varint(n), n>0 */ - n = getVarint32(pData, &iDummy); - assert( n>0 ); - assert( iDummy>0 ); - assert( n0 ); - assert( n<=nData ); - pData += n; - nData -= n; - - /* Zero or more terms of positive length */ - if( nData!=0 ){ - /* First term is not delta-encoded. */ - n = getVarint32(pData, &iDummy); - assert( n>0 ); - assert( iDummy>0 ); - assert( n+iDummy>0); - assert( n+iDummy<=nData ); - pData += n+iDummy; - nData -= n+iDummy; - - /* Following terms delta-encoded. */ - while( nData!=0 ){ - /* Length of shared prefix. */ - n = getVarint32(pData, &iDummy); - assert( n>0 ); - assert( iDummy>=0 ); - assert( n0 ); - assert( iDummy>0 ); - assert( n+iDummy>0); - assert( n+iDummy<=nData ); - pData += n+iDummy; - nData -= n+iDummy; - } - } -} -#define ASSERT_VALID_INTERIOR_BLOCK(x) interiorBlockValidate(x) -#else -#define ASSERT_VALID_INTERIOR_BLOCK(x) assert( 1 ) -#endif - -typedef struct InteriorWriter { - int iHeight; /* from 0 at leaves. */ - InteriorBlock *first, *last; - struct InteriorWriter *parentWriter; - - DataBuffer term; /* Last term written to block "last". */ - sqlite_int64 iOpeningChildBlock; /* First child block in block "last". */ -#ifndef NDEBUG - sqlite_int64 iLastChildBlock; /* for consistency checks. */ -#endif -} InteriorWriter; - -/* Initialize an interior node where pTerm[nTerm] marks the leftmost -** term in the tree. iChildBlock is the leftmost child block at the -** next level down the tree. -*/ -static void interiorWriterInit(int iHeight, const char *pTerm, int nTerm, - sqlite_int64 iChildBlock, - InteriorWriter *pWriter){ - InteriorBlock *block; - assert( iHeight>0 ); - CLEAR(pWriter); - - pWriter->iHeight = iHeight; - pWriter->iOpeningChildBlock = iChildBlock; -#ifndef NDEBUG - pWriter->iLastChildBlock = iChildBlock; -#endif - block = interiorBlockNew(iHeight, iChildBlock, pTerm, nTerm); - pWriter->last = pWriter->first = block; - ASSERT_VALID_INTERIOR_BLOCK(pWriter->last); - dataBufferInit(&pWriter->term, 0); -} - -/* Append the child node rooted at iChildBlock to the interior node, -** with pTerm[nTerm] as the leftmost term in iChildBlock's subtree. -*/ -static void interiorWriterAppend(InteriorWriter *pWriter, - const char *pTerm, int nTerm, - sqlite_int64 iChildBlock){ - char c[VARINT_MAX+VARINT_MAX]; - int n, nPrefix = 0; - - ASSERT_VALID_INTERIOR_BLOCK(pWriter->last); - - /* The first term written into an interior node is actually - ** associated with the second child added (the first child was added - ** in interiorWriterInit, or in the if clause at the bottom of this - ** function). That term gets encoded straight up, with nPrefix left - ** at 0. - */ - if( pWriter->term.nData==0 ){ - n = putVarint(c, nTerm); - }else{ - while( nPrefixterm.nData && - pTerm[nPrefix]==pWriter->term.pData[nPrefix] ){ - nPrefix++; - } - - n = putVarint(c, nPrefix); - n += putVarint(c+n, nTerm-nPrefix); - } - -#ifndef NDEBUG - pWriter->iLastChildBlock++; -#endif - assert( pWriter->iLastChildBlock==iChildBlock ); - - /* Overflow to a new block if the new term makes the current block - ** too big, and the current block already has enough terms. - */ - if( pWriter->last->data.nData+n+nTerm-nPrefix>INTERIOR_MAX && - iChildBlock-pWriter->iOpeningChildBlock>INTERIOR_MIN_TERMS ){ - pWriter->last->next = interiorBlockNew(pWriter->iHeight, iChildBlock, - pTerm, nTerm); - pWriter->last = pWriter->last->next; - pWriter->iOpeningChildBlock = iChildBlock; - dataBufferReset(&pWriter->term); - }else{ - dataBufferAppend2(&pWriter->last->data, c, n, - pTerm+nPrefix, nTerm-nPrefix); - dataBufferReplace(&pWriter->term, pTerm, nTerm); - } - ASSERT_VALID_INTERIOR_BLOCK(pWriter->last); -} - -/* Free the space used by pWriter, including the linked-list of -** InteriorBlocks, and parentWriter, if present. -*/ -static int interiorWriterDestroy(InteriorWriter *pWriter){ - InteriorBlock *block = pWriter->first; - - while( block!=NULL ){ - InteriorBlock *b = block; - block = block->next; - dataBufferDestroy(&b->term); - dataBufferDestroy(&b->data); - sqlite3_free(b); - } - if( pWriter->parentWriter!=NULL ){ - interiorWriterDestroy(pWriter->parentWriter); - sqlite3_free(pWriter->parentWriter); - } - dataBufferDestroy(&pWriter->term); - SCRAMBLE(pWriter); - return SQLITE_OK; -} - -/* If pWriter can fit entirely in ROOT_MAX, return it as the root info -** directly, leaving *piEndBlockid unchanged. Otherwise, flush -** pWriter to %_segments, building a new layer of interior nodes, and -** recursively ask for their root into. -*/ -static int interiorWriterRootInfo(fulltext_vtab *v, InteriorWriter *pWriter, - char **ppRootInfo, int *pnRootInfo, - sqlite_int64 *piEndBlockid){ - InteriorBlock *block = pWriter->first; - sqlite_int64 iBlockid = 0; - int rc; - - /* If we can fit the segment inline */ - if( block==pWriter->last && block->data.nDatadata.pData; - *pnRootInfo = block->data.nData; - return SQLITE_OK; - } - - /* Flush the first block to %_segments, and create a new level of - ** interior node. - */ - ASSERT_VALID_INTERIOR_BLOCK(block); - rc = block_insert(v, block->data.pData, block->data.nData, &iBlockid); - if( rc!=SQLITE_OK ) return rc; - *piEndBlockid = iBlockid; - - pWriter->parentWriter = sqlite3_malloc(sizeof(*pWriter->parentWriter)); - interiorWriterInit(pWriter->iHeight+1, - block->term.pData, block->term.nData, - iBlockid, pWriter->parentWriter); - - /* Flush additional blocks and append to the higher interior - ** node. - */ - for(block=block->next; block!=NULL; block=block->next){ - ASSERT_VALID_INTERIOR_BLOCK(block); - rc = block_insert(v, block->data.pData, block->data.nData, &iBlockid); - if( rc!=SQLITE_OK ) return rc; - *piEndBlockid = iBlockid; - - interiorWriterAppend(pWriter->parentWriter, - block->term.pData, block->term.nData, iBlockid); - } - - /* Parent node gets the chance to be the root. */ - return interiorWriterRootInfo(v, pWriter->parentWriter, - ppRootInfo, pnRootInfo, piEndBlockid); -} - -/****************************************************************/ -/* InteriorReader is used to read off the data from an interior node -** (see comment at top of file for the format). -*/ -typedef struct InteriorReader { - const char *pData; - int nData; - - DataBuffer term; /* previous term, for decoding term delta. */ - - sqlite_int64 iBlockid; -} InteriorReader; - -static void interiorReaderDestroy(InteriorReader *pReader){ - dataBufferDestroy(&pReader->term); - SCRAMBLE(pReader); -} - -/* TODO(shess) The assertions are great, but what if we're in NDEBUG -** and the blob is empty or otherwise contains suspect data? -*/ -static void interiorReaderInit(const char *pData, int nData, - InteriorReader *pReader){ - int n, nTerm; - - /* Require at least the leading flag byte */ - assert( nData>0 ); - assert( pData[0]!='\0' ); - - CLEAR(pReader); - - /* Decode the base blockid, and set the cursor to the first term. */ - n = getVarint(pData+1, &pReader->iBlockid); - assert( 1+n<=nData ); - pReader->pData = pData+1+n; - pReader->nData = nData-(1+n); - - /* A single-child interior node (such as when a leaf node was too - ** large for the segment directory) won't have any terms. - ** Otherwise, decode the first term. - */ - if( pReader->nData==0 ){ - dataBufferInit(&pReader->term, 0); - }else{ - n = getVarint32(pReader->pData, &nTerm); - dataBufferInit(&pReader->term, nTerm); - dataBufferReplace(&pReader->term, pReader->pData+n, nTerm); - assert( n+nTerm<=pReader->nData ); - pReader->pData += n+nTerm; - pReader->nData -= n+nTerm; - } -} - -static int interiorReaderAtEnd(InteriorReader *pReader){ - return pReader->term.nData==0; -} - -static sqlite_int64 interiorReaderCurrentBlockid(InteriorReader *pReader){ - return pReader->iBlockid; -} - -static int interiorReaderTermBytes(InteriorReader *pReader){ - assert( !interiorReaderAtEnd(pReader) ); - return pReader->term.nData; -} -static const char *interiorReaderTerm(InteriorReader *pReader){ - assert( !interiorReaderAtEnd(pReader) ); - return pReader->term.pData; -} - -/* Step forward to the next term in the node. */ -static void interiorReaderStep(InteriorReader *pReader){ - assert( !interiorReaderAtEnd(pReader) ); - - /* If the last term has been read, signal eof, else construct the - ** next term. - */ - if( pReader->nData==0 ){ - dataBufferReset(&pReader->term); - }else{ - int n, nPrefix, nSuffix; - - n = getVarint32(pReader->pData, &nPrefix); - n += getVarint32(pReader->pData+n, &nSuffix); - - /* Truncate the current term and append suffix data. */ - pReader->term.nData = nPrefix; - dataBufferAppend(&pReader->term, pReader->pData+n, nSuffix); - - assert( n+nSuffix<=pReader->nData ); - pReader->pData += n+nSuffix; - pReader->nData -= n+nSuffix; - } - pReader->iBlockid++; -} - -/* Compare the current term to pTerm[nTerm], returning strcmp-style -** results. If isPrefix, equality means equal through nTerm bytes. -*/ -static int interiorReaderTermCmp(InteriorReader *pReader, - const char *pTerm, int nTerm, int isPrefix){ - const char *pReaderTerm = interiorReaderTerm(pReader); - int nReaderTerm = interiorReaderTermBytes(pReader); - int c, n = nReaderTerm0 ) return -1; - if( nTerm>0 ) return 1; - return 0; - } - - c = memcmp(pReaderTerm, pTerm, n); - if( c!=0 ) return c; - if( isPrefix && n==nTerm ) return 0; - return nReaderTerm - nTerm; -} - -/****************************************************************/ -/* LeafWriter is used to collect terms and associated doclist data -** into leaf blocks in %_segments (see top of file for format info). -** Expected usage is: -** -** LeafWriter writer; -** leafWriterInit(0, 0, &writer); -** while( sorted_terms_left_to_process ){ -** // data is doclist data for that term. -** rc = leafWriterStep(v, &writer, pTerm, nTerm, pData, nData); -** if( rc!=SQLITE_OK ) goto err; -** } -** rc = leafWriterFinalize(v, &writer); -**err: -** leafWriterDestroy(&writer); -** return rc; -** -** leafWriterStep() may write a collected leaf out to %_segments. -** leafWriterFinalize() finishes writing any buffered data and stores -** a root node in %_segdir. leafWriterDestroy() frees all buffers and -** InteriorWriters allocated as part of writing this segment. -** -** TODO(shess) Document leafWriterStepMerge(). -*/ - -/* Put terms with data this big in their own block. */ -#define STANDALONE_MIN 1024 - -/* Keep leaf blocks below this size. */ -#define LEAF_MAX 2048 - -typedef struct LeafWriter { - int iLevel; - int idx; - sqlite_int64 iStartBlockid; /* needed to create the root info */ - sqlite_int64 iEndBlockid; /* when we're done writing. */ - - DataBuffer term; /* previous encoded term */ - DataBuffer data; /* encoding buffer */ - - /* bytes of first term in the current node which distinguishes that - ** term from the last term of the previous node. - */ - int nTermDistinct; - - InteriorWriter parentWriter; /* if we overflow */ - int has_parent; -} LeafWriter; - -static void leafWriterInit(int iLevel, int idx, LeafWriter *pWriter){ - CLEAR(pWriter); - pWriter->iLevel = iLevel; - pWriter->idx = idx; - - dataBufferInit(&pWriter->term, 32); - - /* Start out with a reasonably sized block, though it can grow. */ - dataBufferInit(&pWriter->data, LEAF_MAX); -} - -#ifndef NDEBUG -/* Verify that the data is readable as a leaf node. */ -static void leafNodeValidate(const char *pData, int nData){ - int n, iDummy; - - if( nData==0 ) return; - assert( nData>0 ); - assert( pData!=0 ); - assert( pData+nData>pData ); - - /* Must lead with a varint(0) */ - n = getVarint32(pData, &iDummy); - assert( iDummy==0 ); - assert( n>0 ); - assert( n0 ); - assert( iDummy>0 ); - assert( n+iDummy>0 ); - assert( n+iDummy0 ); - assert( iDummy>0 ); - assert( n+iDummy>0 ); - assert( n+iDummy<=nData ); - ASSERT_VALID_DOCLIST(DL_DEFAULT, pData+n, iDummy, NULL); - pData += n+iDummy; - nData -= n+iDummy; - - /* Verify that trailing terms and doclists also are readable. */ - while( nData!=0 ){ - n = getVarint32(pData, &iDummy); - assert( n>0 ); - assert( iDummy>=0 ); - assert( n0 ); - assert( iDummy>0 ); - assert( n+iDummy>0 ); - assert( n+iDummy0 ); - assert( iDummy>0 ); - assert( n+iDummy>0 ); - assert( n+iDummy<=nData ); - ASSERT_VALID_DOCLIST(DL_DEFAULT, pData+n, iDummy, NULL); - pData += n+iDummy; - nData -= n+iDummy; - } -} -#define ASSERT_VALID_LEAF_NODE(p, n) leafNodeValidate(p, n) -#else -#define ASSERT_VALID_LEAF_NODE(p, n) assert( 1 ) -#endif - -/* Flush the current leaf node to %_segments, and adding the resulting -** blockid and the starting term to the interior node which will -** contain it. -*/ -static int leafWriterInternalFlush(fulltext_vtab *v, LeafWriter *pWriter, - int iData, int nData){ - sqlite_int64 iBlockid = 0; - const char *pStartingTerm; - int nStartingTerm, rc, n; - - /* Must have the leading varint(0) flag, plus at least some - ** valid-looking data. - */ - assert( nData>2 ); - assert( iData>=0 ); - assert( iData+nData<=pWriter->data.nData ); - ASSERT_VALID_LEAF_NODE(pWriter->data.pData+iData, nData); - - rc = block_insert(v, pWriter->data.pData+iData, nData, &iBlockid); - if( rc!=SQLITE_OK ) return rc; - assert( iBlockid!=0 ); - - /* Reconstruct the first term in the leaf for purposes of building - ** the interior node. - */ - n = getVarint32(pWriter->data.pData+iData+1, &nStartingTerm); - pStartingTerm = pWriter->data.pData+iData+1+n; - assert( pWriter->data.nData>iData+1+n+nStartingTerm ); - assert( pWriter->nTermDistinct>0 ); - assert( pWriter->nTermDistinct<=nStartingTerm ); - nStartingTerm = pWriter->nTermDistinct; - - if( pWriter->has_parent ){ - interiorWriterAppend(&pWriter->parentWriter, - pStartingTerm, nStartingTerm, iBlockid); - }else{ - interiorWriterInit(1, pStartingTerm, nStartingTerm, iBlockid, - &pWriter->parentWriter); - pWriter->has_parent = 1; - } - - /* Track the span of this segment's leaf nodes. */ - if( pWriter->iEndBlockid==0 ){ - pWriter->iEndBlockid = pWriter->iStartBlockid = iBlockid; - }else{ - pWriter->iEndBlockid++; - assert( iBlockid==pWriter->iEndBlockid ); - } - - return SQLITE_OK; -} -static int leafWriterFlush(fulltext_vtab *v, LeafWriter *pWriter){ - int rc = leafWriterInternalFlush(v, pWriter, 0, pWriter->data.nData); - if( rc!=SQLITE_OK ) return rc; - - /* Re-initialize the output buffer. */ - dataBufferReset(&pWriter->data); - - return SQLITE_OK; -} - -/* Fetch the root info for the segment. If the entire leaf fits -** within ROOT_MAX, then it will be returned directly, otherwise it -** will be flushed and the root info will be returned from the -** interior node. *piEndBlockid is set to the blockid of the last -** interior or leaf node written to disk (0 if none are written at -** all). -*/ -static int leafWriterRootInfo(fulltext_vtab *v, LeafWriter *pWriter, - char **ppRootInfo, int *pnRootInfo, - sqlite_int64 *piEndBlockid){ - /* we can fit the segment entirely inline */ - if( !pWriter->has_parent && pWriter->data.nDatadata.pData; - *pnRootInfo = pWriter->data.nData; - *piEndBlockid = 0; - return SQLITE_OK; - } - - /* Flush remaining leaf data. */ - if( pWriter->data.nData>0 ){ - int rc = leafWriterFlush(v, pWriter); - if( rc!=SQLITE_OK ) return rc; - } - - /* We must have flushed a leaf at some point. */ - assert( pWriter->has_parent ); - - /* Tenatively set the end leaf blockid as the end blockid. If the - ** interior node can be returned inline, this will be the final - ** blockid, otherwise it will be overwritten by - ** interiorWriterRootInfo(). - */ - *piEndBlockid = pWriter->iEndBlockid; - - return interiorWriterRootInfo(v, &pWriter->parentWriter, - ppRootInfo, pnRootInfo, piEndBlockid); -} - -/* Collect the rootInfo data and store it into the segment directory. -** This has the effect of flushing the segment's leaf data to -** %_segments, and also flushing any interior nodes to %_segments. -*/ -static int leafWriterFinalize(fulltext_vtab *v, LeafWriter *pWriter){ - sqlite_int64 iEndBlockid; - char *pRootInfo; - int rc, nRootInfo; - - rc = leafWriterRootInfo(v, pWriter, &pRootInfo, &nRootInfo, &iEndBlockid); - if( rc!=SQLITE_OK ) return rc; - - /* Don't bother storing an entirely empty segment. */ - if( iEndBlockid==0 && nRootInfo==0 ) return SQLITE_OK; - - return segdir_set(v, pWriter->iLevel, pWriter->idx, - pWriter->iStartBlockid, pWriter->iEndBlockid, - iEndBlockid, pRootInfo, nRootInfo); -} - -static void leafWriterDestroy(LeafWriter *pWriter){ - if( pWriter->has_parent ) interiorWriterDestroy(&pWriter->parentWriter); - dataBufferDestroy(&pWriter->term); - dataBufferDestroy(&pWriter->data); -} - -/* Encode a term into the leafWriter, delta-encoding as appropriate. -** Returns the length of the new term which distinguishes it from the -** previous term, which can be used to set nTermDistinct when a node -** boundary is crossed. -*/ -static int leafWriterEncodeTerm(LeafWriter *pWriter, - const char *pTerm, int nTerm){ - char c[VARINT_MAX+VARINT_MAX]; - int n, nPrefix = 0; - - assert( nTerm>0 ); - while( nPrefixterm.nData && - pTerm[nPrefix]==pWriter->term.pData[nPrefix] ){ - nPrefix++; - /* Failing this implies that the terms weren't in order. */ - assert( nPrefixdata.nData==0 ){ - /* Encode the node header and leading term as: - ** varint(0) - ** varint(nTerm) - ** char pTerm[nTerm] - */ - n = putVarint(c, '\0'); - n += putVarint(c+n, nTerm); - dataBufferAppend2(&pWriter->data, c, n, pTerm, nTerm); - }else{ - /* Delta-encode the term as: - ** varint(nPrefix) - ** varint(nSuffix) - ** char pTermSuffix[nSuffix] - */ - n = putVarint(c, nPrefix); - n += putVarint(c+n, nTerm-nPrefix); - dataBufferAppend2(&pWriter->data, c, n, pTerm+nPrefix, nTerm-nPrefix); - } - dataBufferReplace(&pWriter->term, pTerm, nTerm); - - return nPrefix+1; -} - -/* Used to avoid a memmove when a large amount of doclist data is in -** the buffer. This constructs a node and term header before -** iDoclistData and flushes the resulting complete node using -** leafWriterInternalFlush(). -*/ -static int leafWriterInlineFlush(fulltext_vtab *v, LeafWriter *pWriter, - const char *pTerm, int nTerm, - int iDoclistData){ - char c[VARINT_MAX+VARINT_MAX]; - int iData, n = putVarint(c, 0); - n += putVarint(c+n, nTerm); - - /* There should always be room for the header. Even if pTerm shared - ** a substantial prefix with the previous term, the entire prefix - ** could be constructed from earlier data in the doclist, so there - ** should be room. - */ - assert( iDoclistData>=n+nTerm ); - - iData = iDoclistData-(n+nTerm); - memcpy(pWriter->data.pData+iData, c, n); - memcpy(pWriter->data.pData+iData+n, pTerm, nTerm); - - return leafWriterInternalFlush(v, pWriter, iData, pWriter->data.nData-iData); -} - -/* Push pTerm[nTerm] along with the doclist data to the leaf layer of -** %_segments. -*/ -static int leafWriterStepMerge(fulltext_vtab *v, LeafWriter *pWriter, - const char *pTerm, int nTerm, - DLReader *pReaders, int nReaders){ - char c[VARINT_MAX+VARINT_MAX]; - int iTermData = pWriter->data.nData, iDoclistData; - int i, nData, n, nActualData, nActual, rc, nTermDistinct; - - ASSERT_VALID_LEAF_NODE(pWriter->data.pData, pWriter->data.nData); - nTermDistinct = leafWriterEncodeTerm(pWriter, pTerm, nTerm); - - /* Remember nTermDistinct if opening a new node. */ - if( iTermData==0 ) pWriter->nTermDistinct = nTermDistinct; - - iDoclistData = pWriter->data.nData; - - /* Estimate the length of the merged doclist so we can leave space - ** to encode it. - */ - for(i=0, nData=0; idata, c, n); - - docListMerge(&pWriter->data, pReaders, nReaders); - ASSERT_VALID_DOCLIST(DL_DEFAULT, - pWriter->data.pData+iDoclistData+n, - pWriter->data.nData-iDoclistData-n, NULL); - - /* The actual amount of doclist data at this point could be smaller - ** than the length we encoded. Additionally, the space required to - ** encode this length could be smaller. For small doclists, this is - ** not a big deal, we can just use memmove() to adjust things. - */ - nActualData = pWriter->data.nData-(iDoclistData+n); - nActual = putVarint(c, nActualData); - assert( nActualData<=nData ); - assert( nActual<=n ); - - /* If the new doclist is big enough for force a standalone leaf - ** node, we can immediately flush it inline without doing the - ** memmove(). - */ - /* TODO(shess) This test matches leafWriterStep(), which does this - ** test before it knows the cost to varint-encode the term and - ** doclist lengths. At some point, change to - ** pWriter->data.nData-iTermData>STANDALONE_MIN. - */ - if( nTerm+nActualData>STANDALONE_MIN ){ - /* Push leaf node from before this term. */ - if( iTermData>0 ){ - rc = leafWriterInternalFlush(v, pWriter, 0, iTermData); - if( rc!=SQLITE_OK ) return rc; - - pWriter->nTermDistinct = nTermDistinct; - } - - /* Fix the encoded doclist length. */ - iDoclistData += n - nActual; - memcpy(pWriter->data.pData+iDoclistData, c, nActual); - - /* Push the standalone leaf node. */ - rc = leafWriterInlineFlush(v, pWriter, pTerm, nTerm, iDoclistData); - if( rc!=SQLITE_OK ) return rc; - - /* Leave the node empty. */ - dataBufferReset(&pWriter->data); - - return rc; - } - - /* At this point, we know that the doclist was small, so do the - ** memmove if indicated. - */ - if( nActualdata.pData+iDoclistData+nActual, - pWriter->data.pData+iDoclistData+n, - pWriter->data.nData-(iDoclistData+n)); - pWriter->data.nData -= n-nActual; - } - - /* Replace written length with actual length. */ - memcpy(pWriter->data.pData+iDoclistData, c, nActual); - - /* If the node is too large, break things up. */ - /* TODO(shess) This test matches leafWriterStep(), which does this - ** test before it knows the cost to varint-encode the term and - ** doclist lengths. At some point, change to - ** pWriter->data.nData>LEAF_MAX. - */ - if( iTermData+nTerm+nActualData>LEAF_MAX ){ - /* Flush out the leading data as a node */ - rc = leafWriterInternalFlush(v, pWriter, 0, iTermData); - if( rc!=SQLITE_OK ) return rc; - - pWriter->nTermDistinct = nTermDistinct; - - /* Rebuild header using the current term */ - n = putVarint(pWriter->data.pData, 0); - n += putVarint(pWriter->data.pData+n, nTerm); - memcpy(pWriter->data.pData+n, pTerm, nTerm); - n += nTerm; - - /* There should always be room, because the previous encoding - ** included all data necessary to construct the term. - */ - assert( ndata.nData-iDoclistDatadata.pData+n, - pWriter->data.pData+iDoclistData, - pWriter->data.nData-iDoclistData); - pWriter->data.nData -= iDoclistData-n; - } - ASSERT_VALID_LEAF_NODE(pWriter->data.pData, pWriter->data.nData); - - return SQLITE_OK; -} - -/* Push pTerm[nTerm] along with the doclist data to the leaf layer of -** %_segments. -*/ -/* TODO(shess) Revise writeZeroSegment() so that doclists are -** constructed directly in pWriter->data. -*/ -static int leafWriterStep(fulltext_vtab *v, LeafWriter *pWriter, - const char *pTerm, int nTerm, - const char *pData, int nData){ - int rc; - DLReader reader; - - dlrInit(&reader, DL_DEFAULT, pData, nData); - rc = leafWriterStepMerge(v, pWriter, pTerm, nTerm, &reader, 1); - dlrDestroy(&reader); - - return rc; -} - - -/****************************************************************/ -/* LeafReader is used to iterate over an individual leaf node. */ -typedef struct LeafReader { - DataBuffer term; /* copy of current term. */ - - const char *pData; /* data for current term. */ - int nData; -} LeafReader; - -static void leafReaderDestroy(LeafReader *pReader){ - dataBufferDestroy(&pReader->term); - SCRAMBLE(pReader); -} - -static int leafReaderAtEnd(LeafReader *pReader){ - return pReader->nData<=0; -} - -/* Access the current term. */ -static int leafReaderTermBytes(LeafReader *pReader){ - return pReader->term.nData; -} -static const char *leafReaderTerm(LeafReader *pReader){ - assert( pReader->term.nData>0 ); - return pReader->term.pData; -} - -/* Access the doclist data for the current term. */ -static int leafReaderDataBytes(LeafReader *pReader){ - int nData; - assert( pReader->term.nData>0 ); - getVarint32(pReader->pData, &nData); - return nData; -} -static const char *leafReaderData(LeafReader *pReader){ - int n, nData; - assert( pReader->term.nData>0 ); - n = getVarint32(pReader->pData, &nData); - return pReader->pData+n; -} - -static void leafReaderInit(const char *pData, int nData, - LeafReader *pReader){ - int nTerm, n; - - assert( nData>0 ); - assert( pData[0]=='\0' ); - - CLEAR(pReader); - - /* Read the first term, skipping the header byte. */ - n = getVarint32(pData+1, &nTerm); - dataBufferInit(&pReader->term, nTerm); - dataBufferReplace(&pReader->term, pData+1+n, nTerm); - - /* Position after the first term. */ - assert( 1+n+nTermpData = pData+1+n+nTerm; - pReader->nData = nData-1-n-nTerm; -} - -/* Step the reader forward to the next term. */ -static void leafReaderStep(LeafReader *pReader){ - int n, nData, nPrefix, nSuffix; - assert( !leafReaderAtEnd(pReader) ); - - /* Skip previous entry's data block. */ - n = getVarint32(pReader->pData, &nData); - assert( n+nData<=pReader->nData ); - pReader->pData += n+nData; - pReader->nData -= n+nData; - - if( !leafReaderAtEnd(pReader) ){ - /* Construct the new term using a prefix from the old term plus a - ** suffix from the leaf data. - */ - n = getVarint32(pReader->pData, &nPrefix); - n += getVarint32(pReader->pData+n, &nSuffix); - assert( n+nSuffixnData ); - pReader->term.nData = nPrefix; - dataBufferAppend(&pReader->term, pReader->pData+n, nSuffix); - - pReader->pData += n+nSuffix; - pReader->nData -= n+nSuffix; - } -} - -/* strcmp-style comparison of pReader's current term against pTerm. -** If isPrefix, equality means equal through nTerm bytes. -*/ -static int leafReaderTermCmp(LeafReader *pReader, - const char *pTerm, int nTerm, int isPrefix){ - int c, n = pReader->term.nDataterm.nData : nTerm; - if( n==0 ){ - if( pReader->term.nData>0 ) return -1; - if(nTerm>0 ) return 1; - return 0; - } - - c = memcmp(pReader->term.pData, pTerm, n); - if( c!=0 ) return c; - if( isPrefix && n==nTerm ) return 0; - return pReader->term.nData - nTerm; -} - - -/****************************************************************/ -/* LeavesReader wraps LeafReader to allow iterating over the entire -** leaf layer of the tree. -*/ -typedef struct LeavesReader { - int idx; /* Index within the segment. */ - - sqlite3_stmt *pStmt; /* Statement we're streaming leaves from. */ - int eof; /* we've seen SQLITE_DONE from pStmt. */ - - LeafReader leafReader; /* reader for the current leaf. */ - DataBuffer rootData; /* root data for inline. */ -} LeavesReader; - -/* Access the current term. */ -static int leavesReaderTermBytes(LeavesReader *pReader){ - assert( !pReader->eof ); - return leafReaderTermBytes(&pReader->leafReader); -} -static const char *leavesReaderTerm(LeavesReader *pReader){ - assert( !pReader->eof ); - return leafReaderTerm(&pReader->leafReader); -} - -/* Access the doclist data for the current term. */ -static int leavesReaderDataBytes(LeavesReader *pReader){ - assert( !pReader->eof ); - return leafReaderDataBytes(&pReader->leafReader); -} -static const char *leavesReaderData(LeavesReader *pReader){ - assert( !pReader->eof ); - return leafReaderData(&pReader->leafReader); -} - -static int leavesReaderAtEnd(LeavesReader *pReader){ - return pReader->eof; -} - -/* loadSegmentLeaves() may not read all the way to SQLITE_DONE, thus -** leaving the statement handle open, which locks the table. -*/ -/* TODO(shess) This "solution" is not satisfactory. Really, there -** should be check-in function for all statement handles which -** arranges to call sqlite3_reset(). This most likely will require -** modification to control flow all over the place, though, so for now -** just punt. -** -** Note the the current system assumes that segment merges will run to -** completion, which is why this particular probably hasn't arisen in -** this case. Probably a brittle assumption. -*/ -static int leavesReaderReset(LeavesReader *pReader){ - return sqlite3_reset(pReader->pStmt); -} - -static void leavesReaderDestroy(LeavesReader *pReader){ - /* If idx is -1, that means we're using a non-cached statement - ** handle in the optimize() case, so we need to release it. - */ - if( pReader->pStmt!=NULL && pReader->idx==-1 ){ - sqlite3_finalize(pReader->pStmt); - } - leafReaderDestroy(&pReader->leafReader); - dataBufferDestroy(&pReader->rootData); - SCRAMBLE(pReader); -} - -/* Initialize pReader with the given root data (if iStartBlockid==0 -** the leaf data was entirely contained in the root), or from the -** stream of blocks between iStartBlockid and iEndBlockid, inclusive. -*/ -static int leavesReaderInit(fulltext_vtab *v, - int idx, - sqlite_int64 iStartBlockid, - sqlite_int64 iEndBlockid, - const char *pRootData, int nRootData, - LeavesReader *pReader){ - CLEAR(pReader); - pReader->idx = idx; - - dataBufferInit(&pReader->rootData, 0); - if( iStartBlockid==0 ){ - /* Entire leaf level fit in root data. */ - dataBufferReplace(&pReader->rootData, pRootData, nRootData); - leafReaderInit(pReader->rootData.pData, pReader->rootData.nData, - &pReader->leafReader); - }else{ - sqlite3_stmt *s; - int rc = sql_get_leaf_statement(v, idx, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int64(s, 1, iStartBlockid); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int64(s, 2, iEndBlockid); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_step(s); - if( rc==SQLITE_DONE ){ - pReader->eof = 1; - return SQLITE_OK; - } - if( rc!=SQLITE_ROW ) return rc; - - pReader->pStmt = s; - leafReaderInit(sqlite3_column_blob(pReader->pStmt, 0), - sqlite3_column_bytes(pReader->pStmt, 0), - &pReader->leafReader); - } - return SQLITE_OK; -} - -/* Step the current leaf forward to the next term. If we reach the -** end of the current leaf, step forward to the next leaf block. -*/ -static int leavesReaderStep(fulltext_vtab *v, LeavesReader *pReader){ - assert( !leavesReaderAtEnd(pReader) ); - leafReaderStep(&pReader->leafReader); - - if( leafReaderAtEnd(&pReader->leafReader) ){ - int rc; - if( pReader->rootData.pData ){ - pReader->eof = 1; - return SQLITE_OK; - } - rc = sqlite3_step(pReader->pStmt); - if( rc!=SQLITE_ROW ){ - pReader->eof = 1; - return rc==SQLITE_DONE ? SQLITE_OK : rc; - } - leafReaderDestroy(&pReader->leafReader); - leafReaderInit(sqlite3_column_blob(pReader->pStmt, 0), - sqlite3_column_bytes(pReader->pStmt, 0), - &pReader->leafReader); - } - return SQLITE_OK; -} - -/* Order LeavesReaders by their term, ignoring idx. Readers at eof -** always sort to the end. -*/ -static int leavesReaderTermCmp(LeavesReader *lr1, LeavesReader *lr2){ - if( leavesReaderAtEnd(lr1) ){ - if( leavesReaderAtEnd(lr2) ) return 0; - return 1; - } - if( leavesReaderAtEnd(lr2) ) return -1; - - return leafReaderTermCmp(&lr1->leafReader, - leavesReaderTerm(lr2), leavesReaderTermBytes(lr2), - 0); -} - -/* Similar to leavesReaderTermCmp(), with additional ordering by idx -** so that older segments sort before newer segments. -*/ -static int leavesReaderCmp(LeavesReader *lr1, LeavesReader *lr2){ - int c = leavesReaderTermCmp(lr1, lr2); - if( c!=0 ) return c; - return lr1->idx-lr2->idx; -} - -/* Assume that pLr[1]..pLr[nLr] are sorted. Bubble pLr[0] into its -** sorted position. -*/ -static void leavesReaderReorder(LeavesReader *pLr, int nLr){ - while( nLr>1 && leavesReaderCmp(pLr, pLr+1)>0 ){ - LeavesReader tmp = pLr[0]; - pLr[0] = pLr[1]; - pLr[1] = tmp; - nLr--; - pLr++; - } -} - -/* Initializes pReaders with the segments from level iLevel, returning -** the number of segments in *piReaders. Leaves pReaders in sorted -** order. -*/ -static int leavesReadersInit(fulltext_vtab *v, int iLevel, - LeavesReader *pReaders, int *piReaders){ - sqlite3_stmt *s; - int i, rc = sql_get_statement(v, SEGDIR_SELECT_LEVEL_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int(s, 1, iLevel); - if( rc!=SQLITE_OK ) return rc; - - i = 0; - while( (rc = sqlite3_step(s))==SQLITE_ROW ){ - sqlite_int64 iStart = sqlite3_column_int64(s, 0); - sqlite_int64 iEnd = sqlite3_column_int64(s, 1); - const char *pRootData = sqlite3_column_blob(s, 2); - int nRootData = sqlite3_column_bytes(s, 2); - - assert( i0 ){ - leavesReaderDestroy(&pReaders[i]); - } - return rc; - } - - *piReaders = i; - - /* Leave our results sorted by term, then age. */ - while( i-- ){ - leavesReaderReorder(pReaders+i, *piReaders-i); - } - return SQLITE_OK; -} - -/* Merge doclists from pReaders[nReaders] into a single doclist, which -** is written to pWriter. Assumes pReaders is ordered oldest to -** newest. -*/ -/* TODO(shess) Consider putting this inline in segmentMerge(). */ -static int leavesReadersMerge(fulltext_vtab *v, - LeavesReader *pReaders, int nReaders, - LeafWriter *pWriter){ - DLReader dlReaders[MERGE_COUNT]; - const char *pTerm = leavesReaderTerm(pReaders); - int i, nTerm = leavesReaderTermBytes(pReaders); - - assert( nReaders<=MERGE_COUNT ); - - for(i=0; i0 ){ - rc = leavesReaderStep(v, lrs+i); - if( rc!=SQLITE_OK ) goto err; - - /* Reorder by term, then by age. */ - leavesReaderReorder(lrs+i, MERGE_COUNT-i); - } - } - - for(i=0; i0 ); - - for(rc=SQLITE_OK; rc==SQLITE_OK && !leavesReaderAtEnd(pReader); - rc=leavesReaderStep(v, pReader)){ - /* TODO(shess) Really want leavesReaderTermCmp(), but that name is - ** already taken to compare the terms of two LeavesReaders. Think - ** on a better name. [Meanwhile, break encapsulation rather than - ** use a confusing name.] - */ - int c = leafReaderTermCmp(&pReader->leafReader, pTerm, nTerm, isPrefix); - if( c>0 ) break; /* Past any possible matches. */ - if( c==0 ){ - const char *pData = leavesReaderData(pReader); - int iBuffer, nData = leavesReaderDataBytes(pReader); - - /* Find the first empty buffer. */ - for(iBuffer=0; iBuffer0 ){ - assert(pBuffers!=NULL); - memcpy(p, pBuffers, nBuffers*sizeof(*pBuffers)); - sqlite3_free(pBuffers); - } - pBuffers = p; - } - dataBufferInit(&(pBuffers[nBuffers]), 0); - nBuffers++; - } - - /* At this point, must have an empty at iBuffer. */ - assert(iBufferpData, p->nData); - - /* dataBufferReset() could allow a large doclist to blow up - ** our memory requirements. - */ - if( p->nCapacity<1024 ){ - dataBufferReset(p); - }else{ - dataBufferDestroy(p); - dataBufferInit(p, 0); - } - } - } - } - } - - /* Union all the doclists together into *out. */ - /* TODO(shess) What if *out is big? Sigh. */ - if( rc==SQLITE_OK && nBuffers>0 ){ - int iBuffer; - for(iBuffer=0; iBuffer0 ){ - if( out->nData==0 ){ - dataBufferSwap(out, &(pBuffers[iBuffer])); - }else{ - docListAccumulateUnion(out, pBuffers[iBuffer].pData, - pBuffers[iBuffer].nData); - } - } - } - } - - while( nBuffers-- ){ - dataBufferDestroy(&(pBuffers[nBuffers])); - } - if( pBuffers!=NULL ) sqlite3_free(pBuffers); - - return rc; -} - -/* Call loadSegmentLeavesInt() with pData/nData as input. */ -static int loadSegmentLeaf(fulltext_vtab *v, const char *pData, int nData, - const char *pTerm, int nTerm, int isPrefix, - DataBuffer *out){ - LeavesReader reader; - int rc; - - assert( nData>1 ); - assert( *pData=='\0' ); - rc = leavesReaderInit(v, 0, 0, 0, pData, nData, &reader); - if( rc!=SQLITE_OK ) return rc; - - rc = loadSegmentLeavesInt(v, &reader, pTerm, nTerm, isPrefix, out); - leavesReaderReset(&reader); - leavesReaderDestroy(&reader); - return rc; -} - -/* Call loadSegmentLeavesInt() with the leaf nodes from iStartLeaf to -** iEndLeaf (inclusive) as input, and merge the resulting doclist into -** out. -*/ -static int loadSegmentLeaves(fulltext_vtab *v, - sqlite_int64 iStartLeaf, sqlite_int64 iEndLeaf, - const char *pTerm, int nTerm, int isPrefix, - DataBuffer *out){ - int rc; - LeavesReader reader; - - assert( iStartLeaf<=iEndLeaf ); - rc = leavesReaderInit(v, 0, iStartLeaf, iEndLeaf, NULL, 0, &reader); - if( rc!=SQLITE_OK ) return rc; - - rc = loadSegmentLeavesInt(v, &reader, pTerm, nTerm, isPrefix, out); - leavesReaderReset(&reader); - leavesReaderDestroy(&reader); - return rc; -} - -/* Taking pData/nData as an interior node, find the sequence of child -** nodes which could include pTerm/nTerm/isPrefix. Note that the -** interior node terms logically come between the blocks, so there is -** one more blockid than there are terms (that block contains terms >= -** the last interior-node term). -*/ -/* TODO(shess) The calling code may already know that the end child is -** not worth calculating, because the end may be in a later sibling -** node. Consider whether breaking symmetry is worthwhile. I suspect -** it is not worthwhile. -*/ -static void getChildrenContaining(const char *pData, int nData, - const char *pTerm, int nTerm, int isPrefix, - sqlite_int64 *piStartChild, - sqlite_int64 *piEndChild){ - InteriorReader reader; - - assert( nData>1 ); - assert( *pData!='\0' ); - interiorReaderInit(pData, nData, &reader); - - /* Scan for the first child which could contain pTerm/nTerm. */ - while( !interiorReaderAtEnd(&reader) ){ - if( interiorReaderTermCmp(&reader, pTerm, nTerm, 0)>0 ) break; - interiorReaderStep(&reader); - } - *piStartChild = interiorReaderCurrentBlockid(&reader); - - /* Keep scanning to find a term greater than our term, using prefix - ** comparison if indicated. If isPrefix is false, this will be the - ** same blockid as the starting block. - */ - while( !interiorReaderAtEnd(&reader) ){ - if( interiorReaderTermCmp(&reader, pTerm, nTerm, isPrefix)>0 ) break; - interiorReaderStep(&reader); - } - *piEndChild = interiorReaderCurrentBlockid(&reader); - - interiorReaderDestroy(&reader); - - /* Children must ascend, and if !prefix, both must be the same. */ - assert( *piEndChild>=*piStartChild ); - assert( isPrefix || *piStartChild==*piEndChild ); -} - -/* Read block at iBlockid and pass it with other params to -** getChildrenContaining(). -*/ -static int loadAndGetChildrenContaining( - fulltext_vtab *v, - sqlite_int64 iBlockid, - const char *pTerm, int nTerm, int isPrefix, - sqlite_int64 *piStartChild, sqlite_int64 *piEndChild -){ - sqlite3_stmt *s = NULL; - int rc; - - assert( iBlockid!=0 ); - assert( pTerm!=NULL ); - assert( nTerm!=0 ); /* TODO(shess) Why not allow this? */ - assert( piStartChild!=NULL ); - assert( piEndChild!=NULL ); - - rc = sql_get_statement(v, BLOCK_SELECT_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_bind_int64(s, 1, iBlockid); - if( rc!=SQLITE_OK ) return rc; - - rc = sqlite3_step(s); - if( rc==SQLITE_DONE ) return SQLITE_ERROR; - if( rc!=SQLITE_ROW ) return rc; - - getChildrenContaining(sqlite3_column_blob(s, 0), sqlite3_column_bytes(s, 0), - pTerm, nTerm, isPrefix, piStartChild, piEndChild); - - /* We expect only one row. We must execute another sqlite3_step() - * to complete the iteration; otherwise the table will remain - * locked. */ - rc = sqlite3_step(s); - if( rc==SQLITE_ROW ) return SQLITE_ERROR; - if( rc!=SQLITE_DONE ) return rc; - - return SQLITE_OK; -} - -/* Traverse the tree represented by pData[nData] looking for -** pTerm[nTerm], placing its doclist into *out. This is internal to -** loadSegment() to make error-handling cleaner. -*/ -static int loadSegmentInt(fulltext_vtab *v, const char *pData, int nData, - sqlite_int64 iLeavesEnd, - const char *pTerm, int nTerm, int isPrefix, - DataBuffer *out){ - /* Special case where root is a leaf. */ - if( *pData=='\0' ){ - return loadSegmentLeaf(v, pData, nData, pTerm, nTerm, isPrefix, out); - }else{ - int rc; - sqlite_int64 iStartChild, iEndChild; - - /* Process pData as an interior node, then loop down the tree - ** until we find the set of leaf nodes to scan for the term. - */ - getChildrenContaining(pData, nData, pTerm, nTerm, isPrefix, - &iStartChild, &iEndChild); - while( iStartChild>iLeavesEnd ){ - sqlite_int64 iNextStart, iNextEnd; - rc = loadAndGetChildrenContaining(v, iStartChild, pTerm, nTerm, isPrefix, - &iNextStart, &iNextEnd); - if( rc!=SQLITE_OK ) return rc; - - /* If we've branched, follow the end branch, too. */ - if( iStartChild!=iEndChild ){ - sqlite_int64 iDummy; - rc = loadAndGetChildrenContaining(v, iEndChild, pTerm, nTerm, isPrefix, - &iDummy, &iNextEnd); - if( rc!=SQLITE_OK ) return rc; - } - - assert( iNextStart<=iNextEnd ); - iStartChild = iNextStart; - iEndChild = iNextEnd; - } - assert( iStartChild<=iLeavesEnd ); - assert( iEndChild<=iLeavesEnd ); - - /* Scan through the leaf segments for doclists. */ - return loadSegmentLeaves(v, iStartChild, iEndChild, - pTerm, nTerm, isPrefix, out); - } -} - -/* Call loadSegmentInt() to collect the doclist for pTerm/nTerm, then -** merge its doclist over *out (any duplicate doclists read from the -** segment rooted at pData will overwrite those in *out). -*/ -/* TODO(shess) Consider changing this to determine the depth of the -** leaves using either the first characters of interior nodes (when -** ==1, we're one level above the leaves), or the first character of -** the root (which will describe the height of the tree directly). -** Either feels somewhat tricky to me. -*/ -/* TODO(shess) The current merge is likely to be slow for large -** doclists (though it should process from newest/smallest to -** oldest/largest, so it may not be that bad). It might be useful to -** modify things to allow for N-way merging. This could either be -** within a segment, with pairwise merges across segments, or across -** all segments at once. -*/ -static int loadSegment(fulltext_vtab *v, const char *pData, int nData, - sqlite_int64 iLeavesEnd, - const char *pTerm, int nTerm, int isPrefix, - DataBuffer *out){ - DataBuffer result; - int rc; - - assert( nData>1 ); - - /* This code should never be called with buffered updates. */ - assert( v->nPendingData<0 ); - - dataBufferInit(&result, 0); - rc = loadSegmentInt(v, pData, nData, iLeavesEnd, - pTerm, nTerm, isPrefix, &result); - if( rc==SQLITE_OK && result.nData>0 ){ - if( out->nData==0 ){ - DataBuffer tmp = *out; - *out = result; - result = tmp; - }else{ - DataBuffer merged; - DLReader readers[2]; - - dlrInit(&readers[0], DL_DEFAULT, out->pData, out->nData); - dlrInit(&readers[1], DL_DEFAULT, result.pData, result.nData); - dataBufferInit(&merged, out->nData+result.nData); - docListMerge(&merged, readers, 2); - dataBufferDestroy(out); - *out = merged; - dlrDestroy(&readers[0]); - dlrDestroy(&readers[1]); - } - } - dataBufferDestroy(&result); - return rc; -} - -/* Scan the database and merge together the posting lists for the term -** into *out. -*/ -static int termSelect(fulltext_vtab *v, int iColumn, - const char *pTerm, int nTerm, int isPrefix, - DocListType iType, DataBuffer *out){ - DataBuffer doclist; - sqlite3_stmt *s; - int rc = sql_get_statement(v, SEGDIR_SELECT_ALL_STMT, &s); - if( rc!=SQLITE_OK ) return rc; - - /* This code should never be called with buffered updates. */ - assert( v->nPendingData<0 ); - - dataBufferInit(&doclist, 0); - - /* Traverse the segments from oldest to newest so that newer doclist - ** elements for given docids overwrite older elements. - */ - while( (rc = sqlite3_step(s))==SQLITE_ROW ){ - const char *pData = sqlite3_column_blob(s, 2); - const int nData = sqlite3_column_bytes(s, 2); - const sqlite_int64 iLeavesEnd = sqlite3_column_int64(s, 1); - rc = loadSegment(v, pData, nData, iLeavesEnd, pTerm, nTerm, isPrefix, - &doclist); - if( rc!=SQLITE_OK ) goto err; - } - if( rc==SQLITE_DONE ){ - if( doclist.nData!=0 ){ - /* TODO(shess) The old term_select_all() code applied the column - ** restrict as we merged segments, leading to smaller buffers. - ** This is probably worthwhile to bring back, once the new storage - ** system is checked in. - */ - if( iColumn==v->nColumn) iColumn = -1; - docListTrim(DL_DEFAULT, doclist.pData, doclist.nData, - iColumn, iType, out); - } - rc = SQLITE_OK; - } - - err: - dataBufferDestroy(&doclist); - return rc; -} - -/****************************************************************/ -/* Used to hold hashtable data for sorting. */ -typedef struct TermData { - const char *pTerm; - int nTerm; - DLCollector *pCollector; -} TermData; - -/* Orders TermData elements in strcmp fashion ( <0 for less-than, 0 -** for equal, >0 for greater-than). -*/ -static int termDataCmp(const void *av, const void *bv){ - const TermData *a = (const TermData *)av; - const TermData *b = (const TermData *)bv; - int n = a->nTermnTerm ? a->nTerm : b->nTerm; - int c = memcmp(a->pTerm, b->pTerm, n); - if( c!=0 ) return c; - return a->nTerm-b->nTerm; -} - -/* Order pTerms data by term, then write a new level 0 segment using -** LeafWriter. -*/ -static int writeZeroSegment(fulltext_vtab *v, fts2Hash *pTerms){ - fts2HashElem *e; - int idx, rc, i, n; - TermData *pData; - LeafWriter writer; - DataBuffer dl; - - /* Determine the next index at level 0, merging as necessary. */ - rc = segdirNextIndex(v, 0, &idx); - if( rc!=SQLITE_OK ) return rc; - - n = fts2HashCount(pTerms); - pData = sqlite3_malloc(n*sizeof(TermData)); - - for(i = 0, e = fts2HashFirst(pTerms); e; i++, e = fts2HashNext(e)){ - assert( i1 ) qsort(pData, n, sizeof(*pData), termDataCmp); - - /* TODO(shess) Refactor so that we can write directly to the segment - ** DataBuffer, as happens for segment merges. - */ - leafWriterInit(0, idx, &writer); - dataBufferInit(&dl, 0); - for(i=0; inPendingData>=0 ){ - fts2HashElem *e; - for(e=fts2HashFirst(&v->pendingTerms); e; e=fts2HashNext(e)){ - dlcDelete(fts2HashData(e)); - } - fts2HashClear(&v->pendingTerms); - v->nPendingData = -1; - } - return SQLITE_OK; -} - -/* If pendingTerms has data, flush it to a level-zero segment, and -** free it. -*/ -static int flushPendingTerms(fulltext_vtab *v){ - if( v->nPendingData>=0 ){ - int rc = writeZeroSegment(v, &v->pendingTerms); - if( rc==SQLITE_OK ) clearPendingTerms(v); - return rc; - } - return SQLITE_OK; -} - -/* If pendingTerms is "too big", or docid is out of order, flush it. -** Regardless, be certain that pendingTerms is initialized for use. -*/ -static int initPendingTerms(fulltext_vtab *v, sqlite_int64 iDocid){ - /* TODO(shess) Explore whether partially flushing the buffer on - ** forced-flush would provide better performance. I suspect that if - ** we ordered the doclists by size and flushed the largest until the - ** buffer was half empty, that would let the less frequent terms - ** generate longer doclists. - */ - if( iDocid<=v->iPrevDocid || v->nPendingData>kPendingThreshold ){ - int rc = flushPendingTerms(v); - if( rc!=SQLITE_OK ) return rc; - } - if( v->nPendingData<0 ){ - fts2HashInit(&v->pendingTerms, FTS2_HASH_STRING, 1); - v->nPendingData = 0; - } - v->iPrevDocid = iDocid; - return SQLITE_OK; -} - -/* This function implements the xUpdate callback; it is the top-level entry - * point for inserting, deleting or updating a row in a full-text table. */ -static int fulltextUpdate(sqlite3_vtab *pVtab, int nArg, sqlite3_value **ppArg, - sqlite_int64 *pRowid){ - fulltext_vtab *v = (fulltext_vtab *) pVtab; - int rc; - - TRACE(("FTS2 Update %p\n", pVtab)); - - if( nArg<2 ){ - rc = index_delete(v, sqlite3_value_int64(ppArg[0])); - if( rc==SQLITE_OK ){ - /* If we just deleted the last row in the table, clear out the - ** index data. - */ - rc = content_exists(v); - if( rc==SQLITE_ROW ){ - rc = SQLITE_OK; - }else if( rc==SQLITE_DONE ){ - /* Clear the pending terms so we don't flush a useless level-0 - ** segment when the transaction closes. - */ - rc = clearPendingTerms(v); - if( rc==SQLITE_OK ){ - rc = segdir_delete_all(v); - } - } - } - } else if( sqlite3_value_type(ppArg[0]) != SQLITE_NULL ){ - /* An update: - * ppArg[0] = old rowid - * ppArg[1] = new rowid - * ppArg[2..2+v->nColumn-1] = values - * ppArg[2+v->nColumn] = value for magic column (we ignore this) - */ - sqlite_int64 rowid = sqlite3_value_int64(ppArg[0]); - if( sqlite3_value_type(ppArg[1]) != SQLITE_INTEGER || - sqlite3_value_int64(ppArg[1]) != rowid ){ - rc = SQLITE_ERROR; /* we don't allow changing the rowid */ - } else { - assert( nArg==2+v->nColumn+1); - rc = index_update(v, rowid, &ppArg[2]); - } - } else { - /* An insert: - * ppArg[1] = requested rowid - * ppArg[2..2+v->nColumn-1] = values - * ppArg[2+v->nColumn] = value for magic column (we ignore this) - */ - assert( nArg==2+v->nColumn+1); - rc = index_insert(v, ppArg[1], &ppArg[2], pRowid); - } - - return rc; -} - -static int fulltextSync(sqlite3_vtab *pVtab){ - TRACE(("FTS2 xSync()\n")); - return flushPendingTerms((fulltext_vtab *)pVtab); -} - -static int fulltextBegin(sqlite3_vtab *pVtab){ - fulltext_vtab *v = (fulltext_vtab *) pVtab; - TRACE(("FTS2 xBegin()\n")); - - /* Any buffered updates should have been cleared by the previous - ** transaction. - */ - assert( v->nPendingData<0 ); - return clearPendingTerms(v); -} - -static int fulltextCommit(sqlite3_vtab *pVtab){ - fulltext_vtab *v = (fulltext_vtab *) pVtab; - TRACE(("FTS2 xCommit()\n")); - - /* Buffered updates should have been cleared by fulltextSync(). */ - assert( v->nPendingData<0 ); - return clearPendingTerms(v); -} - -static int fulltextRollback(sqlite3_vtab *pVtab){ - TRACE(("FTS2 xRollback()\n")); - return clearPendingTerms((fulltext_vtab *)pVtab); -} - -/* -** Implementation of the snippet() function for FTS2 -*/ -static void snippetFunc( - sqlite3_context *pContext, - int argc, - sqlite3_value **argv -){ - fulltext_cursor *pCursor; - if( argc<1 ) return; - if( sqlite3_value_type(argv[0])!=SQLITE_BLOB || - sqlite3_value_bytes(argv[0])!=sizeof(pCursor) ){ - sqlite3_result_error(pContext, "illegal first argument to html_snippet",-1); - }else{ - const char *zStart = ""; - const char *zEnd = ""; - const char *zEllipsis = "..."; - memcpy(&pCursor, sqlite3_value_blob(argv[0]), sizeof(pCursor)); - if( argc>=2 ){ - zStart = (const char*)sqlite3_value_text(argv[1]); - if( argc>=3 ){ - zEnd = (const char*)sqlite3_value_text(argv[2]); - if( argc>=4 ){ - zEllipsis = (const char*)sqlite3_value_text(argv[3]); - } - } - } - snippetAllOffsets(pCursor); - snippetText(pCursor, zStart, zEnd, zEllipsis); - sqlite3_result_text(pContext, pCursor->snippet.zSnippet, - pCursor->snippet.nSnippet, SQLITE_STATIC); - } -} - -/* -** Implementation of the offsets() function for FTS2 -*/ -static void snippetOffsetsFunc( - sqlite3_context *pContext, - int argc, - sqlite3_value **argv -){ - fulltext_cursor *pCursor; - if( argc<1 ) return; - if( sqlite3_value_type(argv[0])!=SQLITE_BLOB || - sqlite3_value_bytes(argv[0])!=sizeof(pCursor) ){ - sqlite3_result_error(pContext, "illegal first argument to offsets",-1); - }else{ - memcpy(&pCursor, sqlite3_value_blob(argv[0]), sizeof(pCursor)); - snippetAllOffsets(pCursor); - snippetOffsetText(&pCursor->snippet); - sqlite3_result_text(pContext, - pCursor->snippet.zOffset, pCursor->snippet.nOffset, - SQLITE_STATIC); - } -} - -/* OptLeavesReader is nearly identical to LeavesReader, except that -** where LeavesReader is geared towards the merging of complete -** segment levels (with exactly MERGE_COUNT segments), OptLeavesReader -** is geared towards implementation of the optimize() function, and -** can merge all segments simultaneously. This version may be -** somewhat less efficient than LeavesReader because it merges into an -** accumulator rather than doing an N-way merge, but since segment -** size grows exponentially (so segment count logrithmically) this is -** probably not an immediate problem. -*/ -/* TODO(shess): Prove that assertion, or extend the merge code to -** merge tree fashion (like the prefix-searching code does). -*/ -/* TODO(shess): OptLeavesReader and LeavesReader could probably be -** merged with little or no loss of performance for LeavesReader. The -** merged code would need to handle >MERGE_COUNT segments, and would -** also need to be able to optionally optimize away deletes. -*/ -typedef struct OptLeavesReader { - /* Segment number, to order readers by age. */ - int segment; - LeavesReader reader; -} OptLeavesReader; - -static int optLeavesReaderAtEnd(OptLeavesReader *pReader){ - return leavesReaderAtEnd(&pReader->reader); -} -static int optLeavesReaderTermBytes(OptLeavesReader *pReader){ - return leavesReaderTermBytes(&pReader->reader); -} -static const char *optLeavesReaderData(OptLeavesReader *pReader){ - return leavesReaderData(&pReader->reader); -} -static int optLeavesReaderDataBytes(OptLeavesReader *pReader){ - return leavesReaderDataBytes(&pReader->reader); -} -static const char *optLeavesReaderTerm(OptLeavesReader *pReader){ - return leavesReaderTerm(&pReader->reader); -} -static int optLeavesReaderStep(fulltext_vtab *v, OptLeavesReader *pReader){ - return leavesReaderStep(v, &pReader->reader); -} -static int optLeavesReaderTermCmp(OptLeavesReader *lr1, OptLeavesReader *lr2){ - return leavesReaderTermCmp(&lr1->reader, &lr2->reader); -} -/* Order by term ascending, segment ascending (oldest to newest), with -** exhausted readers to the end. -*/ -static int optLeavesReaderCmp(OptLeavesReader *lr1, OptLeavesReader *lr2){ - int c = optLeavesReaderTermCmp(lr1, lr2); - if( c!=0 ) return c; - return lr1->segment-lr2->segment; -} -/* Bubble pLr[0] to appropriate place in pLr[1..nLr-1]. Assumes that -** pLr[1..nLr-1] is already sorted. -*/ -static void optLeavesReaderReorder(OptLeavesReader *pLr, int nLr){ - while( nLr>1 && optLeavesReaderCmp(pLr, pLr+1)>0 ){ - OptLeavesReader tmp = pLr[0]; - pLr[0] = pLr[1]; - pLr[1] = tmp; - nLr--; - pLr++; - } -} - -/* optimize() helper function. Put the readers in order and iterate -** through them, merging doclists for matching terms into pWriter. -** Returns SQLITE_OK on success, or the SQLite error code which -** prevented success. -*/ -static int optimizeInternal(fulltext_vtab *v, - OptLeavesReader *readers, int nReaders, - LeafWriter *pWriter){ - int i, rc = SQLITE_OK; - DataBuffer doclist, merged, tmp; - - /* Order the readers. */ - i = nReaders; - while( i-- > 0 ){ - optLeavesReaderReorder(&readers[i], nReaders-i); - } - - dataBufferInit(&doclist, LEAF_MAX); - dataBufferInit(&merged, LEAF_MAX); - - /* Exhausted readers bubble to the end, so when the first reader is - ** at eof, all are at eof. - */ - while( !optLeavesReaderAtEnd(&readers[0]) ){ - - /* Figure out how many readers share the next term. */ - for(i=1; i 0 ){ - dlrDestroy(&dlReaders[nReaders]); - } - - /* Accumulated doclist to reader 0 for next pass. */ - dlrInit(&dlReaders[0], DL_DEFAULT, doclist.pData, doclist.nData); - } - - /* Destroy reader that was left in the pipeline. */ - dlrDestroy(&dlReaders[0]); - - /* Trim deletions from the doclist. */ - dataBufferReset(&merged); - docListTrim(DL_DEFAULT, doclist.pData, doclist.nData, - -1, DL_DEFAULT, &merged); - } - - /* Only pass doclists with hits (skip if all hits deleted). */ - if( merged.nData>0 ){ - rc = leafWriterStep(v, pWriter, - optLeavesReaderTerm(&readers[0]), - optLeavesReaderTermBytes(&readers[0]), - merged.pData, merged.nData); - if( rc!=SQLITE_OK ) goto err; - } - - /* Step merged readers to next term and reorder. */ - while( i-- > 0 ){ - rc = optLeavesReaderStep(v, &readers[i]); - if( rc!=SQLITE_OK ) goto err; - - optLeavesReaderReorder(&readers[i], nReaders-i); - } - } - - err: - dataBufferDestroy(&doclist); - dataBufferDestroy(&merged); - return rc; -} - -/* Implement optimize() function for FTS3. optimize(t) merges all -** segments in the fts index into a single segment. 't' is the magic -** table-named column. -*/ -static void optimizeFunc(sqlite3_context *pContext, - int argc, sqlite3_value **argv){ - fulltext_cursor *pCursor; - if( argc>1 ){ - sqlite3_result_error(pContext, "excess arguments to optimize()",-1); - }else if( sqlite3_value_type(argv[0])!=SQLITE_BLOB || - sqlite3_value_bytes(argv[0])!=sizeof(pCursor) ){ - sqlite3_result_error(pContext, "illegal first argument to optimize",-1); - }else{ - fulltext_vtab *v; - int i, rc, iMaxLevel; - OptLeavesReader *readers; - int nReaders; - LeafWriter writer; - sqlite3_stmt *s; - - memcpy(&pCursor, sqlite3_value_blob(argv[0]), sizeof(pCursor)); - v = cursor_vtab(pCursor); - - /* Flush any buffered updates before optimizing. */ - rc = flushPendingTerms(v); - if( rc!=SQLITE_OK ) goto err; - - rc = segdir_count(v, &nReaders, &iMaxLevel); - if( rc!=SQLITE_OK ) goto err; - if( nReaders==0 || nReaders==1 ){ - sqlite3_result_text(pContext, "Index already optimal", -1, - SQLITE_STATIC); - return; - } - - rc = sql_get_statement(v, SEGDIR_SELECT_ALL_STMT, &s); - if( rc!=SQLITE_OK ) goto err; - - readers = sqlite3_malloc(nReaders*sizeof(readers[0])); - if( readers==NULL ) goto err; - - /* Note that there will already be a segment at this position - ** until we call segdir_delete() on iMaxLevel. - */ - leafWriterInit(iMaxLevel, 0, &writer); - - i = 0; - while( (rc = sqlite3_step(s))==SQLITE_ROW ){ - sqlite_int64 iStart = sqlite3_column_int64(s, 0); - sqlite_int64 iEnd = sqlite3_column_int64(s, 1); - const char *pRootData = sqlite3_column_blob(s, 2); - int nRootData = sqlite3_column_bytes(s, 2); - - assert( i 0 ){ - leavesReaderDestroy(&readers[i].reader); - } - sqlite3_free(readers); - - /* If we've successfully gotten to here, delete the old segments - ** and flush the interior structure of the new segment. - */ - if( rc==SQLITE_OK ){ - for( i=0; i<=iMaxLevel; i++ ){ - rc = segdir_delete(v, i); - if( rc!=SQLITE_OK ) break; - } - - if( rc==SQLITE_OK ) rc = leafWriterFinalize(v, &writer); - } - - leafWriterDestroy(&writer); - - if( rc!=SQLITE_OK ) goto err; - - sqlite3_result_text(pContext, "Index optimized", -1, SQLITE_STATIC); - return; - - /* TODO(shess): Error-handling needs to be improved along the - ** lines of the dump_ functions. - */ - err: - { - char buf[512]; - sqlite3_snprintf(sizeof(buf), buf, "Error in optimize: %s", - sqlite3_errmsg(sqlite3_context_db_handle(pContext))); - sqlite3_result_error(pContext, buf, -1); - } - } -} - -#ifdef SQLITE_TEST -/* Generate an error of the form ": ". If msg is NULL, -** pull the error from the context's db handle. -*/ -static void generateError(sqlite3_context *pContext, - const char *prefix, const char *msg){ - char buf[512]; - if( msg==NULL ) msg = sqlite3_errmsg(sqlite3_context_db_handle(pContext)); - sqlite3_snprintf(sizeof(buf), buf, "%s: %s", prefix, msg); - sqlite3_result_error(pContext, buf, -1); -} - -/* Helper function to collect the set of terms in the segment into -** pTerms. The segment is defined by the leaf nodes between -** iStartBlockid and iEndBlockid, inclusive, or by the contents of -** pRootData if iStartBlockid is 0 (in which case the entire segment -** fit in a leaf). -*/ -static int collectSegmentTerms(fulltext_vtab *v, sqlite3_stmt *s, - fts2Hash *pTerms){ - const sqlite_int64 iStartBlockid = sqlite3_column_int64(s, 0); - const sqlite_int64 iEndBlockid = sqlite3_column_int64(s, 1); - const char *pRootData = sqlite3_column_blob(s, 2); - const int nRootData = sqlite3_column_bytes(s, 2); - LeavesReader reader; - int rc = leavesReaderInit(v, 0, iStartBlockid, iEndBlockid, - pRootData, nRootData, &reader); - if( rc!=SQLITE_OK ) return rc; - - while( rc==SQLITE_OK && !leavesReaderAtEnd(&reader) ){ - const char *pTerm = leavesReaderTerm(&reader); - const int nTerm = leavesReaderTermBytes(&reader); - void *oldValue = sqlite3Fts2HashFind(pTerms, pTerm, nTerm); - void *newValue = (void *)((char *)oldValue+1); - - /* From the comment before sqlite3Fts2HashInsert in fts2_hash.c, - ** the data value passed is returned in case of malloc failure. - */ - if( newValue==sqlite3Fts2HashInsert(pTerms, pTerm, nTerm, newValue) ){ - rc = SQLITE_NOMEM; - }else{ - rc = leavesReaderStep(v, &reader); - } - } - - leavesReaderDestroy(&reader); - return rc; -} - -/* Helper function to build the result string for dump_terms(). */ -static int generateTermsResult(sqlite3_context *pContext, fts2Hash *pTerms){ - int iTerm, nTerms, nResultBytes, iByte; - char *result; - TermData *pData; - fts2HashElem *e; - - /* Iterate pTerms to generate an array of terms in pData for - ** sorting. - */ - nTerms = fts2HashCount(pTerms); - assert( nTerms>0 ); - pData = sqlite3_malloc(nTerms*sizeof(TermData)); - if( pData==NULL ) return SQLITE_NOMEM; - - nResultBytes = 0; - for(iTerm = 0, e = fts2HashFirst(pTerms); e; iTerm++, e = fts2HashNext(e)){ - nResultBytes += fts2HashKeysize(e)+1; /* Term plus trailing space */ - assert( iTerm0 ); /* nTerms>0, nResultsBytes must be, too. */ - result = sqlite3_malloc(nResultBytes); - if( result==NULL ){ - sqlite3_free(pData); - return SQLITE_NOMEM; - } - - if( nTerms>1 ) qsort(pData, nTerms, sizeof(*pData), termDataCmp); - - /* Read the terms in order to build the result. */ - iByte = 0; - for(iTerm=0; iTerm0 ){ - rc = generateTermsResult(pContext, &terms); - if( rc==SQLITE_NOMEM ){ - generateError(pContext, "dump_terms", "out of memory"); - }else{ - assert( rc==SQLITE_OK ); - } - }else if( argc==3 ){ - /* The specific segment asked for could not be found. */ - generateError(pContext, "dump_terms", "segment not found"); - }else{ - /* No segments found. */ - /* TODO(shess): It should be impossible to reach this. This - ** case can only happen for an empty table, in which case - ** SQLite has no rows to call this function on. - */ - sqlite3_result_null(pContext); - } - } - sqlite3Fts2HashClear(&terms); - } -} - -/* Expand the DL_DEFAULT doclist in pData into a text result in -** pContext. -*/ -static void createDoclistResult(sqlite3_context *pContext, - const char *pData, int nData){ - DataBuffer dump; - DLReader dlReader; - - assert( pData!=NULL && nData>0 ); - - dataBufferInit(&dump, 0); - dlrInit(&dlReader, DL_DEFAULT, pData, nData); - for( ; !dlrAtEnd(&dlReader); dlrStep(&dlReader) ){ - char buf[256]; - PLReader plReader; - - plrInit(&plReader, &dlReader); - if( DL_DEFAULT==DL_DOCIDS || plrAtEnd(&plReader) ){ - sqlite3_snprintf(sizeof(buf), buf, "[%lld] ", dlrDocid(&dlReader)); - dataBufferAppend(&dump, buf, strlen(buf)); - }else{ - int iColumn = plrColumn(&plReader); - - sqlite3_snprintf(sizeof(buf), buf, "[%lld %d[", - dlrDocid(&dlReader), iColumn); - dataBufferAppend(&dump, buf, strlen(buf)); - - for( ; !plrAtEnd(&plReader); plrStep(&plReader) ){ - if( plrColumn(&plReader)!=iColumn ){ - iColumn = plrColumn(&plReader); - sqlite3_snprintf(sizeof(buf), buf, "] %d[", iColumn); - assert( dump.nData>0 ); - dump.nData--; /* Overwrite trailing space. */ - assert( dump.pData[dump.nData]==' '); - dataBufferAppend(&dump, buf, strlen(buf)); - } - if( DL_DEFAULT==DL_POSITIONS_OFFSETS ){ - sqlite3_snprintf(sizeof(buf), buf, "%d,%d,%d ", - plrPosition(&plReader), - plrStartOffset(&plReader), plrEndOffset(&plReader)); - }else if( DL_DEFAULT==DL_POSITIONS ){ - sqlite3_snprintf(sizeof(buf), buf, "%d ", plrPosition(&plReader)); - }else{ - assert( NULL=="Unhandled DL_DEFAULT value"); - } - dataBufferAppend(&dump, buf, strlen(buf)); - } - plrDestroy(&plReader); - - assert( dump.nData>0 ); - dump.nData--; /* Overwrite trailing space. */ - assert( dump.pData[dump.nData]==' '); - dataBufferAppend(&dump, "]] ", 3); - } - } - dlrDestroy(&dlReader); - - assert( dump.nData>0 ); - dump.nData--; /* Overwrite trailing space. */ - assert( dump.pData[dump.nData]==' '); - dump.pData[dump.nData] = '\0'; - assert( dump.nData>0 ); - - /* Passes ownership of dump's buffer to pContext. */ - sqlite3_result_text(pContext, dump.pData, dump.nData, sqlite3_free); - dump.pData = NULL; - dump.nData = dump.nCapacity = 0; -} - -/* Implements dump_doclist() for use in inspecting the fts2 index from -** tests. TEXT result containing a string representation of the -** doclist for the indicated term. dump_doclist(t, term, level, idx) -** dumps the doclist for term from the segment specified by level, idx -** (in %_segdir), while dump_doclist(t, term) dumps the logical -** doclist for the term across all segments. The per-segment doclist -** can contain deletions, while the full-index doclist will not -** (deletions are omitted). -** -** Result formats differ with the setting of DL_DEFAULTS. Examples: -** -** DL_DOCIDS: [1] [3] [7] -** DL_POSITIONS: [1 0[0 4] 1[17]] [3 1[5]] -** DL_POSITIONS_OFFSETS: [1 0[0,0,3 4,23,26] 1[17,102,105]] [3 1[5,20,23]] -** -** In each case the number after the outer '[' is the docid. In the -** latter two cases, the number before the inner '[' is the column -** associated with the values within. For DL_POSITIONS the numbers -** within are the positions, for DL_POSITIONS_OFFSETS they are the -** position, the start offset, and the end offset. -*/ -static void dumpDoclistFunc( - sqlite3_context *pContext, - int argc, sqlite3_value **argv -){ - fulltext_cursor *pCursor; - if( argc!=2 && argc!=4 ){ - generateError(pContext, "dump_doclist", "incorrect arguments"); - }else if( sqlite3_value_type(argv[0])!=SQLITE_BLOB || - sqlite3_value_bytes(argv[0])!=sizeof(pCursor) ){ - generateError(pContext, "dump_doclist", "illegal first argument"); - }else if( sqlite3_value_text(argv[1])==NULL || - sqlite3_value_text(argv[1])[0]=='\0' ){ - generateError(pContext, "dump_doclist", "empty second argument"); - }else{ - const char *pTerm = (const char *)sqlite3_value_text(argv[1]); - const int nTerm = strlen(pTerm); - fulltext_vtab *v; - int rc; - DataBuffer doclist; - - memcpy(&pCursor, sqlite3_value_blob(argv[0]), sizeof(pCursor)); - v = cursor_vtab(pCursor); - - dataBufferInit(&doclist, 0); - - /* termSelect() yields the same logical doclist that queries are - ** run against. - */ - if( argc==2 ){ - rc = termSelect(v, v->nColumn, pTerm, nTerm, 0, DL_DEFAULT, &doclist); - }else{ - sqlite3_stmt *s = NULL; - - /* Get our specific segment's information. */ - rc = sql_get_statement(v, SEGDIR_SELECT_SEGMENT_STMT, &s); - if( rc==SQLITE_OK ){ - rc = sqlite3_bind_int(s, 1, sqlite3_value_int(argv[2])); - if( rc==SQLITE_OK ){ - rc = sqlite3_bind_int(s, 2, sqlite3_value_int(argv[3])); - } - } - - if( rc==SQLITE_OK ){ - rc = sqlite3_step(s); - - if( rc==SQLITE_DONE ){ - dataBufferDestroy(&doclist); - generateError(pContext, "dump_doclist", "segment not found"); - return; - } - - /* Found a segment, load it into doclist. */ - if( rc==SQLITE_ROW ){ - const sqlite_int64 iLeavesEnd = sqlite3_column_int64(s, 1); - const char *pData = sqlite3_column_blob(s, 2); - const int nData = sqlite3_column_bytes(s, 2); - - /* loadSegment() is used by termSelect() to load each - ** segment's data. - */ - rc = loadSegment(v, pData, nData, iLeavesEnd, pTerm, nTerm, 0, - &doclist); - if( rc==SQLITE_OK ){ - rc = sqlite3_step(s); - - /* Should not have more than one matching segment. */ - if( rc!=SQLITE_DONE ){ - sqlite3_reset(s); - dataBufferDestroy(&doclist); - generateError(pContext, "dump_doclist", "invalid segdir"); - return; - } - rc = SQLITE_OK; - } - } - } - - sqlite3_reset(s); - } - - if( rc==SQLITE_OK ){ - if( doclist.nData>0 ){ - createDoclistResult(pContext, doclist.pData, doclist.nData); - }else{ - /* TODO(shess): This can happen if the term is not present, or - ** if all instances of the term have been deleted and this is - ** an all-index dump. It may be interesting to distinguish - ** these cases. - */ - sqlite3_result_text(pContext, "", 0, SQLITE_STATIC); - } - }else if( rc==SQLITE_NOMEM ){ - /* Handle out-of-memory cases specially because if they are - ** generated in fts2 code they may not be reflected in the db - ** handle. - */ - /* TODO(shess): Handle this more comprehensively. - ** sqlite3ErrStr() has what I need, but is internal. - */ - generateError(pContext, "dump_doclist", "out of memory"); - }else{ - generateError(pContext, "dump_doclist", NULL); - } - - dataBufferDestroy(&doclist); - } -} -#endif - -/* -** This routine implements the xFindFunction method for the FTS2 -** virtual table. -*/ -static int fulltextFindFunction( - sqlite3_vtab *pVtab, - int nArg, - const char *zName, - void (**pxFunc)(sqlite3_context*,int,sqlite3_value**), - void **ppArg -){ - if( strcmp(zName,"snippet")==0 ){ - *pxFunc = snippetFunc; - return 1; - }else if( strcmp(zName,"offsets")==0 ){ - *pxFunc = snippetOffsetsFunc; - return 1; - }else if( strcmp(zName,"optimize")==0 ){ - *pxFunc = optimizeFunc; - return 1; -#ifdef SQLITE_TEST - /* NOTE(shess): These functions are present only for testing - ** purposes. No particular effort is made to optimize their - ** execution or how they build their results. - */ - }else if( strcmp(zName,"dump_terms")==0 ){ - /* fprintf(stderr, "Found dump_terms\n"); */ - *pxFunc = dumpTermsFunc; - return 1; - }else if( strcmp(zName,"dump_doclist")==0 ){ - /* fprintf(stderr, "Found dump_doclist\n"); */ - *pxFunc = dumpDoclistFunc; - return 1; -#endif - } - return 0; -} - -/* -** Rename an fts2 table. -*/ -static int fulltextRename( - sqlite3_vtab *pVtab, - const char *zName -){ - fulltext_vtab *p = (fulltext_vtab *)pVtab; - int rc = SQLITE_NOMEM; - char *zSql = sqlite3_mprintf( - "ALTER TABLE %Q.'%q_content' RENAME TO '%q_content';" - "ALTER TABLE %Q.'%q_segments' RENAME TO '%q_segments';" - "ALTER TABLE %Q.'%q_segdir' RENAME TO '%q_segdir';" - , p->zDb, p->zName, zName - , p->zDb, p->zName, zName - , p->zDb, p->zName, zName - ); - if( zSql ){ - rc = sqlite3_exec(p->db, zSql, 0, 0, 0); - sqlite3_free(zSql); - } - return rc; -} - -static const sqlite3_module fts2Module = { - /* iVersion */ 0, - /* xCreate */ fulltextCreate, - /* xConnect */ fulltextConnect, - /* xBestIndex */ fulltextBestIndex, - /* xDisconnect */ fulltextDisconnect, - /* xDestroy */ fulltextDestroy, - /* xOpen */ fulltextOpen, - /* xClose */ fulltextClose, - /* xFilter */ fulltextFilter, - /* xNext */ fulltextNext, - /* xEof */ fulltextEof, - /* xColumn */ fulltextColumn, - /* xRowid */ fulltextRowid, - /* xUpdate */ fulltextUpdate, - /* xBegin */ fulltextBegin, - /* xSync */ fulltextSync, - /* xCommit */ fulltextCommit, - /* xRollback */ fulltextRollback, - /* xFindFunction */ fulltextFindFunction, - /* xRename */ fulltextRename, -}; - -static void hashDestroy(void *p){ - fts2Hash *pHash = (fts2Hash *)p; - sqlite3Fts2HashClear(pHash); - sqlite3_free(pHash); -} - -/* -** The fts2 built-in tokenizers - "simple" and "porter" - are implemented -** in files fts2_tokenizer1.c and fts2_porter.c respectively. The following -** two forward declarations are for functions declared in these files -** used to retrieve the respective implementations. -** -** Calling sqlite3Fts2SimpleTokenizerModule() sets the value pointed -** to by the argument to point a the "simple" tokenizer implementation. -** Function ...PorterTokenizerModule() sets *pModule to point to the -** porter tokenizer/stemmer implementation. -*/ -void sqlite3Fts2SimpleTokenizerModule(sqlite3_tokenizer_module const**ppModule); -void sqlite3Fts2PorterTokenizerModule(sqlite3_tokenizer_module const**ppModule); -void sqlite3Fts2IcuTokenizerModule(sqlite3_tokenizer_module const**ppModule); - -int sqlite3Fts2InitHashTable(sqlite3 *, fts2Hash *, const char *); - -/* -** Initialise the fts2 extension. If this extension is built as part -** of the sqlite library, then this function is called directly by -** SQLite. If fts2 is built as a dynamically loadable extension, this -** function is called by the sqlite3_extension_init() entry point. -*/ -int sqlite3Fts2Init(sqlite3 *db){ - int rc = SQLITE_OK; - fts2Hash *pHash = 0; - const sqlite3_tokenizer_module *pSimple = 0; - const sqlite3_tokenizer_module *pPorter = 0; - const sqlite3_tokenizer_module *pIcu = 0; - - sqlite3Fts2SimpleTokenizerModule(&pSimple); - sqlite3Fts2PorterTokenizerModule(&pPorter); -#ifdef SQLITE_ENABLE_ICU - sqlite3Fts2IcuTokenizerModule(&pIcu); -#endif - - /* Allocate and initialise the hash-table used to store tokenizers. */ - pHash = sqlite3_malloc(sizeof(fts2Hash)); - if( !pHash ){ - rc = SQLITE_NOMEM; - }else{ - sqlite3Fts2HashInit(pHash, FTS2_HASH_STRING, 1); - } - - /* Load the built-in tokenizers into the hash table */ - if( rc==SQLITE_OK ){ - if( sqlite3Fts2HashInsert(pHash, "simple", 7, (void *)pSimple) - || sqlite3Fts2HashInsert(pHash, "porter", 7, (void *)pPorter) - || (pIcu && sqlite3Fts2HashInsert(pHash, "icu", 4, (void *)pIcu)) - ){ - rc = SQLITE_NOMEM; - } - } - - /* Create the virtual table wrapper around the hash-table and overload - ** the two scalar functions. If this is successful, register the - ** module with sqlite. - */ - if( SQLITE_OK==rc - && SQLITE_OK==(rc = sqlite3Fts2InitHashTable(db, pHash, "fts2_tokenizer")) - && SQLITE_OK==(rc = sqlite3_overload_function(db, "snippet", -1)) - && SQLITE_OK==(rc = sqlite3_overload_function(db, "offsets", -1)) - && SQLITE_OK==(rc = sqlite3_overload_function(db, "optimize", -1)) -#ifdef SQLITE_TEST - && SQLITE_OK==(rc = sqlite3_overload_function(db, "dump_terms", -1)) - && SQLITE_OK==(rc = sqlite3_overload_function(db, "dump_doclist", -1)) -#endif - ){ - return sqlite3_create_module_v2( - db, "fts2", &fts2Module, (void *)pHash, hashDestroy - ); - } - - /* An error has occurred. Delete the hash table and return the error code. */ - assert( rc!=SQLITE_OK ); - if( pHash ){ - sqlite3Fts2HashClear(pHash); - sqlite3_free(pHash); - } - return rc; -} - -#if !SQLITE_CORE -int sqlite3_extension_init( - sqlite3 *db, - char **pzErrMsg, - const sqlite3_api_routines *pApi -){ - SQLITE_EXTENSION_INIT2(pApi) - return sqlite3Fts2Init(db); -} -#endif - -#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS2) */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/fts2.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/fts2.h deleted file mode 100644 index 979b99c769..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/fts2.h +++ /dev/null @@ -1,26 +0,0 @@ -/* -** 2006 Oct 10 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This header file is used by programs that want to link against the -** FTS2 library. All it does is declare the sqlite3Fts2Init() interface. -*/ -#include "sqlite3.h" - -#ifdef __cplusplus -extern "C" { -#endif /* __cplusplus */ - -int sqlite3Fts2Init(sqlite3 *db); - -#ifdef __cplusplus -} /* extern "C" */ -#endif /* __cplusplus */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/fts2_hash.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/fts2_hash.c deleted file mode 100644 index 7a066a39b7..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/fts2_hash.c +++ /dev/null @@ -1,374 +0,0 @@ -/* -** 2001 September 22 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This is the implementation of generic hash-tables used in SQLite. -** We've modified it slightly to serve as a standalone hash table -** implementation for the full-text indexing module. -*/ - -/* -** The code in this file is only compiled if: -** -** * The FTS2 module is being built as an extension -** (in which case SQLITE_CORE is not defined), or -** -** * The FTS2 module is being built into the core of -** SQLite (in which case SQLITE_ENABLE_FTS2 is defined). -*/ -#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS2) - -#include -#include -#include - -#include "sqlite3.h" -#include "fts2_hash.h" - -/* -** Malloc and Free functions -*/ -static void *fts2HashMalloc(int n){ - void *p = sqlite3_malloc(n); - if( p ){ - memset(p, 0, n); - } - return p; -} -static void fts2HashFree(void *p){ - sqlite3_free(p); -} - -/* Turn bulk memory into a hash table object by initializing the -** fields of the Hash structure. -** -** "pNew" is a pointer to the hash table that is to be initialized. -** keyClass is one of the constants -** FTS2_HASH_BINARY or FTS2_HASH_STRING. The value of keyClass -** determines what kind of key the hash table will use. "copyKey" is -** true if the hash table should make its own private copy of keys and -** false if it should just use the supplied pointer. -*/ -void sqlite3Fts2HashInit(fts2Hash *pNew, int keyClass, int copyKey){ - assert( pNew!=0 ); - assert( keyClass>=FTS2_HASH_STRING && keyClass<=FTS2_HASH_BINARY ); - pNew->keyClass = keyClass; - pNew->copyKey = copyKey; - pNew->first = 0; - pNew->count = 0; - pNew->htsize = 0; - pNew->ht = 0; -} - -/* Remove all entries from a hash table. Reclaim all memory. -** Call this routine to delete a hash table or to reset a hash table -** to the empty state. -*/ -void sqlite3Fts2HashClear(fts2Hash *pH){ - fts2HashElem *elem; /* For looping over all elements of the table */ - - assert( pH!=0 ); - elem = pH->first; - pH->first = 0; - fts2HashFree(pH->ht); - pH->ht = 0; - pH->htsize = 0; - while( elem ){ - fts2HashElem *next_elem = elem->next; - if( pH->copyKey && elem->pKey ){ - fts2HashFree(elem->pKey); - } - fts2HashFree(elem); - elem = next_elem; - } - pH->count = 0; -} - -/* -** Hash and comparison functions when the mode is FTS2_HASH_STRING -*/ -static int strHash(const void *pKey, int nKey){ - const char *z = (const char *)pKey; - int h = 0; - if( nKey<=0 ) nKey = (int) strlen(z); - while( nKey > 0 ){ - h = (h<<3) ^ h ^ *z++; - nKey--; - } - return h & 0x7fffffff; -} -static int strCompare(const void *pKey1, int n1, const void *pKey2, int n2){ - if( n1!=n2 ) return 1; - return strncmp((const char*)pKey1,(const char*)pKey2,n1); -} - -/* -** Hash and comparison functions when the mode is FTS2_HASH_BINARY -*/ -static int binHash(const void *pKey, int nKey){ - int h = 0; - const char *z = (const char *)pKey; - while( nKey-- > 0 ){ - h = (h<<3) ^ h ^ *(z++); - } - return h & 0x7fffffff; -} -static int binCompare(const void *pKey1, int n1, const void *pKey2, int n2){ - if( n1!=n2 ) return 1; - return memcmp(pKey1,pKey2,n1); -} - -/* -** Return a pointer to the appropriate hash function given the key class. -** -** The C syntax in this function definition may be unfamilar to some -** programmers, so we provide the following additional explanation: -** -** The name of the function is "hashFunction". The function takes a -** single parameter "keyClass". The return value of hashFunction() -** is a pointer to another function. Specifically, the return value -** of hashFunction() is a pointer to a function that takes two parameters -** with types "const void*" and "int" and returns an "int". -*/ -static int (*hashFunction(int keyClass))(const void*,int){ - if( keyClass==FTS2_HASH_STRING ){ - return &strHash; - }else{ - assert( keyClass==FTS2_HASH_BINARY ); - return &binHash; - } -} - -/* -** Return a pointer to the appropriate hash function given the key class. -** -** For help in interpreted the obscure C code in the function definition, -** see the header comment on the previous function. -*/ -static int (*compareFunction(int keyClass))(const void*,int,const void*,int){ - if( keyClass==FTS2_HASH_STRING ){ - return &strCompare; - }else{ - assert( keyClass==FTS2_HASH_BINARY ); - return &binCompare; - } -} - -/* Link an element into the hash table -*/ -static void insertElement( - fts2Hash *pH, /* The complete hash table */ - struct _fts2ht *pEntry, /* The entry into which pNew is inserted */ - fts2HashElem *pNew /* The element to be inserted */ -){ - fts2HashElem *pHead; /* First element already in pEntry */ - pHead = pEntry->chain; - if( pHead ){ - pNew->next = pHead; - pNew->prev = pHead->prev; - if( pHead->prev ){ pHead->prev->next = pNew; } - else { pH->first = pNew; } - pHead->prev = pNew; - }else{ - pNew->next = pH->first; - if( pH->first ){ pH->first->prev = pNew; } - pNew->prev = 0; - pH->first = pNew; - } - pEntry->count++; - pEntry->chain = pNew; -} - - -/* Resize the hash table so that it cantains "new_size" buckets. -** "new_size" must be a power of 2. The hash table might fail -** to resize if sqliteMalloc() fails. -*/ -static void rehash(fts2Hash *pH, int new_size){ - struct _fts2ht *new_ht; /* The new hash table */ - fts2HashElem *elem, *next_elem; /* For looping over existing elements */ - int (*xHash)(const void*,int); /* The hash function */ - - assert( (new_size & (new_size-1))==0 ); - new_ht = (struct _fts2ht *)fts2HashMalloc( new_size*sizeof(struct _fts2ht) ); - if( new_ht==0 ) return; - fts2HashFree(pH->ht); - pH->ht = new_ht; - pH->htsize = new_size; - xHash = hashFunction(pH->keyClass); - for(elem=pH->first, pH->first=0; elem; elem = next_elem){ - int h = (*xHash)(elem->pKey, elem->nKey) & (new_size-1); - next_elem = elem->next; - insertElement(pH, &new_ht[h], elem); - } -} - -/* This function (for internal use only) locates an element in an -** hash table that matches the given key. The hash for this key has -** already been computed and is passed as the 4th parameter. -*/ -static fts2HashElem *findElementGivenHash( - const fts2Hash *pH, /* The pH to be searched */ - const void *pKey, /* The key we are searching for */ - int nKey, - int h /* The hash for this key. */ -){ - fts2HashElem *elem; /* Used to loop thru the element list */ - int count; /* Number of elements left to test */ - int (*xCompare)(const void*,int,const void*,int); /* comparison function */ - - if( pH->ht ){ - struct _fts2ht *pEntry = &pH->ht[h]; - elem = pEntry->chain; - count = pEntry->count; - xCompare = compareFunction(pH->keyClass); - while( count-- && elem ){ - if( (*xCompare)(elem->pKey,elem->nKey,pKey,nKey)==0 ){ - return elem; - } - elem = elem->next; - } - } - return 0; -} - -/* Remove a single entry from the hash table given a pointer to that -** element and a hash on the element's key. -*/ -static void removeElementGivenHash( - fts2Hash *pH, /* The pH containing "elem" */ - fts2HashElem* elem, /* The element to be removed from the pH */ - int h /* Hash value for the element */ -){ - struct _fts2ht *pEntry; - if( elem->prev ){ - elem->prev->next = elem->next; - }else{ - pH->first = elem->next; - } - if( elem->next ){ - elem->next->prev = elem->prev; - } - pEntry = &pH->ht[h]; - if( pEntry->chain==elem ){ - pEntry->chain = elem->next; - } - pEntry->count--; - if( pEntry->count<=0 ){ - pEntry->chain = 0; - } - if( pH->copyKey && elem->pKey ){ - fts2HashFree(elem->pKey); - } - fts2HashFree( elem ); - pH->count--; - if( pH->count<=0 ){ - assert( pH->first==0 ); - assert( pH->count==0 ); - fts2HashClear(pH); - } -} - -/* Attempt to locate an element of the hash table pH with a key -** that matches pKey,nKey. Return the data for this element if it is -** found, or NULL if there is no match. -*/ -void *sqlite3Fts2HashFind(const fts2Hash *pH, const void *pKey, int nKey){ - int h; /* A hash on key */ - fts2HashElem *elem; /* The element that matches key */ - int (*xHash)(const void*,int); /* The hash function */ - - if( pH==0 || pH->ht==0 ) return 0; - xHash = hashFunction(pH->keyClass); - assert( xHash!=0 ); - h = (*xHash)(pKey,nKey); - assert( (pH->htsize & (pH->htsize-1))==0 ); - elem = findElementGivenHash(pH,pKey,nKey, h & (pH->htsize-1)); - return elem ? elem->data : 0; -} - -/* Insert an element into the hash table pH. The key is pKey,nKey -** and the data is "data". -** -** If no element exists with a matching key, then a new -** element is created. A copy of the key is made if the copyKey -** flag is set. NULL is returned. -** -** If another element already exists with the same key, then the -** new data replaces the old data and the old data is returned. -** The key is not copied in this instance. If a malloc fails, then -** the new data is returned and the hash table is unchanged. -** -** If the "data" parameter to this function is NULL, then the -** element corresponding to "key" is removed from the hash table. -*/ -void *sqlite3Fts2HashInsert( - fts2Hash *pH, /* The hash table to insert into */ - const void *pKey, /* The key */ - int nKey, /* Number of bytes in the key */ - void *data /* The data */ -){ - int hraw; /* Raw hash value of the key */ - int h; /* the hash of the key modulo hash table size */ - fts2HashElem *elem; /* Used to loop thru the element list */ - fts2HashElem *new_elem; /* New element added to the pH */ - int (*xHash)(const void*,int); /* The hash function */ - - assert( pH!=0 ); - xHash = hashFunction(pH->keyClass); - assert( xHash!=0 ); - hraw = (*xHash)(pKey, nKey); - assert( (pH->htsize & (pH->htsize-1))==0 ); - h = hraw & (pH->htsize-1); - elem = findElementGivenHash(pH,pKey,nKey,h); - if( elem ){ - void *old_data = elem->data; - if( data==0 ){ - removeElementGivenHash(pH,elem,h); - }else{ - elem->data = data; - } - return old_data; - } - if( data==0 ) return 0; - new_elem = (fts2HashElem*)fts2HashMalloc( sizeof(fts2HashElem) ); - if( new_elem==0 ) return data; - if( pH->copyKey && pKey!=0 ){ - new_elem->pKey = fts2HashMalloc( nKey ); - if( new_elem->pKey==0 ){ - fts2HashFree(new_elem); - return data; - } - memcpy((void*)new_elem->pKey, pKey, nKey); - }else{ - new_elem->pKey = (void*)pKey; - } - new_elem->nKey = nKey; - pH->count++; - if( pH->htsize==0 ){ - rehash(pH,8); - if( pH->htsize==0 ){ - pH->count = 0; - fts2HashFree(new_elem); - return data; - } - } - if( pH->count > pH->htsize ){ - rehash(pH,pH->htsize*2); - } - assert( pH->htsize>0 ); - assert( (pH->htsize & (pH->htsize-1))==0 ); - h = hraw & (pH->htsize-1); - insertElement(pH, &pH->ht[h], new_elem); - new_elem->data = data; - return 0; -} - -#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS2) */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/fts2_hash.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/fts2_hash.h deleted file mode 100644 index a22b9dabd7..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/fts2_hash.h +++ /dev/null @@ -1,110 +0,0 @@ -/* -** 2001 September 22 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This is the header file for the generic hash-table implemenation -** used in SQLite. We've modified it slightly to serve as a standalone -** hash table implementation for the full-text indexing module. -** -*/ -#ifndef _FTS2_HASH_H_ -#define _FTS2_HASH_H_ - -/* Forward declarations of structures. */ -typedef struct fts2Hash fts2Hash; -typedef struct fts2HashElem fts2HashElem; - -/* A complete hash table is an instance of the following structure. -** The internals of this structure are intended to be opaque -- client -** code should not attempt to access or modify the fields of this structure -** directly. Change this structure only by using the routines below. -** However, many of the "procedures" and "functions" for modifying and -** accessing this structure are really macros, so we can't really make -** this structure opaque. -*/ -struct fts2Hash { - char keyClass; /* HASH_INT, _POINTER, _STRING, _BINARY */ - char copyKey; /* True if copy of key made on insert */ - int count; /* Number of entries in this table */ - fts2HashElem *first; /* The first element of the array */ - int htsize; /* Number of buckets in the hash table */ - struct _fts2ht { /* the hash table */ - int count; /* Number of entries with this hash */ - fts2HashElem *chain; /* Pointer to first entry with this hash */ - } *ht; -}; - -/* Each element in the hash table is an instance of the following -** structure. All elements are stored on a single doubly-linked list. -** -** Again, this structure is intended to be opaque, but it can't really -** be opaque because it is used by macros. -*/ -struct fts2HashElem { - fts2HashElem *next, *prev; /* Next and previous elements in the table */ - void *data; /* Data associated with this element */ - void *pKey; int nKey; /* Key associated with this element */ -}; - -/* -** There are 2 different modes of operation for a hash table: -** -** FTS2_HASH_STRING pKey points to a string that is nKey bytes long -** (including the null-terminator, if any). Case -** is respected in comparisons. -** -** FTS2_HASH_BINARY pKey points to binary data nKey bytes long. -** memcmp() is used to compare keys. -** -** A copy of the key is made if the copyKey parameter to fts2HashInit is 1. -*/ -#define FTS2_HASH_STRING 1 -#define FTS2_HASH_BINARY 2 - -/* -** Access routines. To delete, insert a NULL pointer. -*/ -void sqlite3Fts2HashInit(fts2Hash*, int keytype, int copyKey); -void *sqlite3Fts2HashInsert(fts2Hash*, const void *pKey, int nKey, void *pData); -void *sqlite3Fts2HashFind(const fts2Hash*, const void *pKey, int nKey); -void sqlite3Fts2HashClear(fts2Hash*); - -/* -** Shorthand for the functions above -*/ -#define fts2HashInit sqlite3Fts2HashInit -#define fts2HashInsert sqlite3Fts2HashInsert -#define fts2HashFind sqlite3Fts2HashFind -#define fts2HashClear sqlite3Fts2HashClear - -/* -** Macros for looping over all elements of a hash table. The idiom is -** like this: -** -** fts2Hash h; -** fts2HashElem *p; -** ... -** for(p=fts2HashFirst(&h); p; p=fts2HashNext(p)){ -** SomeStructure *pData = fts2HashData(p); -** // do something with pData -** } -*/ -#define fts2HashFirst(H) ((H)->first) -#define fts2HashNext(E) ((E)->next) -#define fts2HashData(E) ((E)->data) -#define fts2HashKey(E) ((E)->pKey) -#define fts2HashKeysize(E) ((E)->nKey) - -/* -** Number of entries in a hash table -*/ -#define fts2HashCount(H) ((H)->count) - -#endif /* _FTS2_HASH_H_ */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/fts2_icu.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/fts2_icu.c deleted file mode 100644 index eef24a96c5..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/fts2_icu.c +++ /dev/null @@ -1,260 +0,0 @@ -/* -** 2007 June 22 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file implements a tokenizer for fts2 based on the ICU library. -** -** $Id: fts2_icu.c,v 1.3 2008/12/18 05:30:26 danielk1977 Exp $ -*/ - -#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS2) -#ifdef SQLITE_ENABLE_ICU - -#include -#include -#include "fts2_tokenizer.h" - -#include -#include -#include -#include - -typedef struct IcuTokenizer IcuTokenizer; -typedef struct IcuCursor IcuCursor; - -struct IcuTokenizer { - sqlite3_tokenizer base; - char *zLocale; -}; - -struct IcuCursor { - sqlite3_tokenizer_cursor base; - - UBreakIterator *pIter; /* ICU break-iterator object */ - int nChar; /* Number of UChar elements in pInput */ - UChar *aChar; /* Copy of input using utf-16 encoding */ - int *aOffset; /* Offsets of each character in utf-8 input */ - - int nBuffer; - char *zBuffer; - - int iToken; -}; - -/* -** Create a new tokenizer instance. -*/ -static int icuCreate( - int argc, /* Number of entries in argv[] */ - const char * const *argv, /* Tokenizer creation arguments */ - sqlite3_tokenizer **ppTokenizer /* OUT: Created tokenizer */ -){ - IcuTokenizer *p; - int n = 0; - - if( argc>0 ){ - n = strlen(argv[0])+1; - } - p = (IcuTokenizer *)sqlite3_malloc(sizeof(IcuTokenizer)+n); - if( !p ){ - return SQLITE_NOMEM; - } - memset(p, 0, sizeof(IcuTokenizer)); - - if( n ){ - p->zLocale = (char *)&p[1]; - memcpy(p->zLocale, argv[0], n); - } - - *ppTokenizer = (sqlite3_tokenizer *)p; - - return SQLITE_OK; -} - -/* -** Destroy a tokenizer -*/ -static int icuDestroy(sqlite3_tokenizer *pTokenizer){ - IcuTokenizer *p = (IcuTokenizer *)pTokenizer; - sqlite3_free(p); - return SQLITE_OK; -} - -/* -** Prepare to begin tokenizing a particular string. The input -** string to be tokenized is pInput[0..nBytes-1]. A cursor -** used to incrementally tokenize this string is returned in -** *ppCursor. -*/ -static int icuOpen( - sqlite3_tokenizer *pTokenizer, /* The tokenizer */ - const char *zInput, /* Input string */ - int nInput, /* Length of zInput in bytes */ - sqlite3_tokenizer_cursor **ppCursor /* OUT: Tokenization cursor */ -){ - IcuTokenizer *p = (IcuTokenizer *)pTokenizer; - IcuCursor *pCsr; - - const int32_t opt = U_FOLD_CASE_DEFAULT; - UErrorCode status = U_ZERO_ERROR; - int nChar; - - UChar32 c; - int iInput = 0; - int iOut = 0; - - *ppCursor = 0; - - if( nInput<0 ){ - nInput = strlen(zInput); - } - nChar = nInput+1; - pCsr = (IcuCursor *)sqlite3_malloc( - sizeof(IcuCursor) + /* IcuCursor */ - nChar * sizeof(UChar) + /* IcuCursor.aChar[] */ - (nChar+1) * sizeof(int) /* IcuCursor.aOffset[] */ - ); - if( !pCsr ){ - return SQLITE_NOMEM; - } - memset(pCsr, 0, sizeof(IcuCursor)); - pCsr->aChar = (UChar *)&pCsr[1]; - pCsr->aOffset = (int *)&pCsr->aChar[nChar]; - - pCsr->aOffset[iOut] = iInput; - U8_NEXT(zInput, iInput, nInput, c); - while( c>0 ){ - int isError = 0; - c = u_foldCase(c, opt); - U16_APPEND(pCsr->aChar, iOut, nChar, c, isError); - if( isError ){ - sqlite3_free(pCsr); - return SQLITE_ERROR; - } - pCsr->aOffset[iOut] = iInput; - - if( iInputpIter = ubrk_open(UBRK_WORD, p->zLocale, pCsr->aChar, iOut, &status); - if( !U_SUCCESS(status) ){ - sqlite3_free(pCsr); - return SQLITE_ERROR; - } - pCsr->nChar = iOut; - - ubrk_first(pCsr->pIter); - *ppCursor = (sqlite3_tokenizer_cursor *)pCsr; - return SQLITE_OK; -} - -/* -** Close a tokenization cursor previously opened by a call to icuOpen(). -*/ -static int icuClose(sqlite3_tokenizer_cursor *pCursor){ - IcuCursor *pCsr = (IcuCursor *)pCursor; - ubrk_close(pCsr->pIter); - sqlite3_free(pCsr->zBuffer); - sqlite3_free(pCsr); - return SQLITE_OK; -} - -/* -** Extract the next token from a tokenization cursor. -*/ -static int icuNext( - sqlite3_tokenizer_cursor *pCursor, /* Cursor returned by simpleOpen */ - const char **ppToken, /* OUT: *ppToken is the token text */ - int *pnBytes, /* OUT: Number of bytes in token */ - int *piStartOffset, /* OUT: Starting offset of token */ - int *piEndOffset, /* OUT: Ending offset of token */ - int *piPosition /* OUT: Position integer of token */ -){ - IcuCursor *pCsr = (IcuCursor *)pCursor; - - int iStart = 0; - int iEnd = 0; - int nByte = 0; - - while( iStart==iEnd ){ - UChar32 c; - - iStart = ubrk_current(pCsr->pIter); - iEnd = ubrk_next(pCsr->pIter); - if( iEnd==UBRK_DONE ){ - return SQLITE_DONE; - } - - while( iStartaChar, iWhite, pCsr->nChar, c); - if( u_isspace(c) ){ - iStart = iWhite; - }else{ - break; - } - } - assert(iStart<=iEnd); - } - - do { - UErrorCode status = U_ZERO_ERROR; - if( nByte ){ - char *zNew = sqlite3_realloc(pCsr->zBuffer, nByte); - if( !zNew ){ - return SQLITE_NOMEM; - } - pCsr->zBuffer = zNew; - pCsr->nBuffer = nByte; - } - - u_strToUTF8( - pCsr->zBuffer, pCsr->nBuffer, &nByte, /* Output vars */ - &pCsr->aChar[iStart], iEnd-iStart, /* Input vars */ - &status /* Output success/failure */ - ); - } while( nByte>pCsr->nBuffer ); - - *ppToken = pCsr->zBuffer; - *pnBytes = nByte; - *piStartOffset = pCsr->aOffset[iStart]; - *piEndOffset = pCsr->aOffset[iEnd]; - *piPosition = pCsr->iToken++; - - return SQLITE_OK; -} - -/* -** The set of routines that implement the simple tokenizer -*/ -static const sqlite3_tokenizer_module icuTokenizerModule = { - 0, /* iVersion */ - icuCreate, /* xCreate */ - icuDestroy, /* xCreate */ - icuOpen, /* xOpen */ - icuClose, /* xClose */ - icuNext, /* xNext */ -}; - -/* -** Set *ppModule to point at the implementation of the ICU tokenizer. -*/ -void sqlite3Fts2IcuTokenizerModule( - sqlite3_tokenizer_module const**ppModule -){ - *ppModule = &icuTokenizerModule; -} - -#endif /* defined(SQLITE_ENABLE_ICU) */ -#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS2) */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/fts2_porter.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/fts2_porter.c deleted file mode 100644 index dc0fcf59bd..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/fts2_porter.c +++ /dev/null @@ -1,641 +0,0 @@ -/* -** 2006 September 30 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** Implementation of the full-text-search tokenizer that implements -** a Porter stemmer. -*/ - -/* -** The code in this file is only compiled if: -** -** * The FTS2 module is being built as an extension -** (in which case SQLITE_CORE is not defined), or -** -** * The FTS2 module is being built into the core of -** SQLite (in which case SQLITE_ENABLE_FTS2 is defined). -*/ -#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS2) - - -#include -#include -#include -#include - -#include "fts2_tokenizer.h" - -/* -** Class derived from sqlite3_tokenizer -*/ -typedef struct porter_tokenizer { - sqlite3_tokenizer base; /* Base class */ -} porter_tokenizer; - -/* -** Class derived from sqlit3_tokenizer_cursor -*/ -typedef struct porter_tokenizer_cursor { - sqlite3_tokenizer_cursor base; - const char *zInput; /* input we are tokenizing */ - int nInput; /* size of the input */ - int iOffset; /* current position in zInput */ - int iToken; /* index of next token to be returned */ - char *zToken; /* storage for current token */ - int nAllocated; /* space allocated to zToken buffer */ -} porter_tokenizer_cursor; - - -/* Forward declaration */ -static const sqlite3_tokenizer_module porterTokenizerModule; - - -/* -** Create a new tokenizer instance. -*/ -static int porterCreate( - int argc, const char * const *argv, - sqlite3_tokenizer **ppTokenizer -){ - porter_tokenizer *t; - t = (porter_tokenizer *) sqlite3_malloc(sizeof(*t)); - if( t==NULL ) return SQLITE_NOMEM; - memset(t, 0, sizeof(*t)); - *ppTokenizer = &t->base; - return SQLITE_OK; -} - -/* -** Destroy a tokenizer -*/ -static int porterDestroy(sqlite3_tokenizer *pTokenizer){ - sqlite3_free(pTokenizer); - return SQLITE_OK; -} - -/* -** Prepare to begin tokenizing a particular string. The input -** string to be tokenized is zInput[0..nInput-1]. A cursor -** used to incrementally tokenize this string is returned in -** *ppCursor. -*/ -static int porterOpen( - sqlite3_tokenizer *pTokenizer, /* The tokenizer */ - const char *zInput, int nInput, /* String to be tokenized */ - sqlite3_tokenizer_cursor **ppCursor /* OUT: Tokenization cursor */ -){ - porter_tokenizer_cursor *c; - - c = (porter_tokenizer_cursor *) sqlite3_malloc(sizeof(*c)); - if( c==NULL ) return SQLITE_NOMEM; - - c->zInput = zInput; - if( zInput==0 ){ - c->nInput = 0; - }else if( nInput<0 ){ - c->nInput = (int)strlen(zInput); - }else{ - c->nInput = nInput; - } - c->iOffset = 0; /* start tokenizing at the beginning */ - c->iToken = 0; - c->zToken = NULL; /* no space allocated, yet. */ - c->nAllocated = 0; - - *ppCursor = &c->base; - return SQLITE_OK; -} - -/* -** Close a tokenization cursor previously opened by a call to -** porterOpen() above. -*/ -static int porterClose(sqlite3_tokenizer_cursor *pCursor){ - porter_tokenizer_cursor *c = (porter_tokenizer_cursor *) pCursor; - sqlite3_free(c->zToken); - sqlite3_free(c); - return SQLITE_OK; -} -/* -** Vowel or consonant -*/ -static const char cType[] = { - 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, - 1, 1, 1, 2, 1 -}; - -/* -** isConsonant() and isVowel() determine if their first character in -** the string they point to is a consonant or a vowel, according -** to Porter ruls. -** -** A consonate is any letter other than 'a', 'e', 'i', 'o', or 'u'. -** 'Y' is a consonant unless it follows another consonant, -** in which case it is a vowel. -** -** In these routine, the letters are in reverse order. So the 'y' rule -** is that 'y' is a consonant unless it is followed by another -** consonent. -*/ -static int isVowel(const char*); -static int isConsonant(const char *z){ - int j; - char x = *z; - if( x==0 ) return 0; - assert( x>='a' && x<='z' ); - j = cType[x-'a']; - if( j<2 ) return j; - return z[1]==0 || isVowel(z + 1); -} -static int isVowel(const char *z){ - int j; - char x = *z; - if( x==0 ) return 0; - assert( x>='a' && x<='z' ); - j = cType[x-'a']; - if( j<2 ) return 1-j; - return isConsonant(z + 1); -} - -/* -** Let any sequence of one or more vowels be represented by V and let -** C be sequence of one or more consonants. Then every word can be -** represented as: -** -** [C] (VC){m} [V] -** -** In prose: A word is an optional consonant followed by zero or -** vowel-consonant pairs followed by an optional vowel. "m" is the -** number of vowel consonant pairs. This routine computes the value -** of m for the first i bytes of a word. -** -** Return true if the m-value for z is 1 or more. In other words, -** return true if z contains at least one vowel that is followed -** by a consonant. -** -** In this routine z[] is in reverse order. So we are really looking -** for an instance of of a consonant followed by a vowel. -*/ -static int m_gt_0(const char *z){ - while( isVowel(z) ){ z++; } - if( *z==0 ) return 0; - while( isConsonant(z) ){ z++; } - return *z!=0; -} - -/* Like mgt0 above except we are looking for a value of m which is -** exactly 1 -*/ -static int m_eq_1(const char *z){ - while( isVowel(z) ){ z++; } - if( *z==0 ) return 0; - while( isConsonant(z) ){ z++; } - if( *z==0 ) return 0; - while( isVowel(z) ){ z++; } - if( *z==0 ) return 1; - while( isConsonant(z) ){ z++; } - return *z==0; -} - -/* Like mgt0 above except we are looking for a value of m>1 instead -** or m>0 -*/ -static int m_gt_1(const char *z){ - while( isVowel(z) ){ z++; } - if( *z==0 ) return 0; - while( isConsonant(z) ){ z++; } - if( *z==0 ) return 0; - while( isVowel(z) ){ z++; } - if( *z==0 ) return 0; - while( isConsonant(z) ){ z++; } - return *z!=0; -} - -/* -** Return TRUE if there is a vowel anywhere within z[0..n-1] -*/ -static int hasVowel(const char *z){ - while( isConsonant(z) ){ z++; } - return *z!=0; -} - -/* -** Return TRUE if the word ends in a double consonant. -** -** The text is reversed here. So we are really looking at -** the first two characters of z[]. -*/ -static int doubleConsonant(const char *z){ - return isConsonant(z) && z[0]==z[1] && isConsonant(z+1); -} - -/* -** Return TRUE if the word ends with three letters which -** are consonant-vowel-consonent and where the final consonant -** is not 'w', 'x', or 'y'. -** -** The word is reversed here. So we are really checking the -** first three letters and the first one cannot be in [wxy]. -*/ -static int star_oh(const char *z){ - return - z[0]!=0 && isConsonant(z) && - z[0]!='w' && z[0]!='x' && z[0]!='y' && - z[1]!=0 && isVowel(z+1) && - z[2]!=0 && isConsonant(z+2); -} - -/* -** If the word ends with zFrom and xCond() is true for the stem -** of the word that preceeds the zFrom ending, then change the -** ending to zTo. -** -** The input word *pz and zFrom are both in reverse order. zTo -** is in normal order. -** -** Return TRUE if zFrom matches. Return FALSE if zFrom does not -** match. Not that TRUE is returned even if xCond() fails and -** no substitution occurs. -*/ -static int stem( - char **pz, /* The word being stemmed (Reversed) */ - const char *zFrom, /* If the ending matches this... (Reversed) */ - const char *zTo, /* ... change the ending to this (not reversed) */ - int (*xCond)(const char*) /* Condition that must be true */ -){ - char *z = *pz; - while( *zFrom && *zFrom==*z ){ z++; zFrom++; } - if( *zFrom!=0 ) return 0; - if( xCond && !xCond(z) ) return 1; - while( *zTo ){ - *(--z) = *(zTo++); - } - *pz = z; - return 1; -} - -/* -** This is the fallback stemmer used when the porter stemmer is -** inappropriate. The input word is copied into the output with -** US-ASCII case folding. If the input word is too long (more -** than 20 bytes if it contains no digits or more than 6 bytes if -** it contains digits) then word is truncated to 20 or 6 bytes -** by taking 10 or 3 bytes from the beginning and end. -*/ -static void copy_stemmer(const char *zIn, int nIn, char *zOut, int *pnOut){ - int i, mx, j; - int hasDigit = 0; - for(i=0; i='A' && c<='Z' ){ - zOut[i] = c - 'A' + 'a'; - }else{ - if( c>='0' && c<='9' ) hasDigit = 1; - zOut[i] = c; - } - } - mx = hasDigit ? 3 : 10; - if( nIn>mx*2 ){ - for(j=mx, i=nIn-mx; i=sizeof(zReverse)-7 ){ - /* The word is too big or too small for the porter stemmer. - ** Fallback to the copy stemmer */ - copy_stemmer(zIn, nIn, zOut, pnOut); - return; - } - for(i=0, j=sizeof(zReverse)-6; i='A' && c<='Z' ){ - zReverse[j] = c + 'a' - 'A'; - }else if( c>='a' && c<='z' ){ - zReverse[j] = c; - }else{ - /* The use of a character not in [a-zA-Z] means that we fallback - ** to the copy stemmer */ - copy_stemmer(zIn, nIn, zOut, pnOut); - return; - } - } - memset(&zReverse[sizeof(zReverse)-5], 0, 5); - z = &zReverse[j+1]; - - - /* Step 1a */ - if( z[0]=='s' ){ - if( - !stem(&z, "sess", "ss", 0) && - !stem(&z, "sei", "i", 0) && - !stem(&z, "ss", "ss", 0) - ){ - z++; - } - } - - /* Step 1b */ - z2 = z; - if( stem(&z, "dee", "ee", m_gt_0) ){ - /* Do nothing. The work was all in the test */ - }else if( - (stem(&z, "gni", "", hasVowel) || stem(&z, "de", "", hasVowel)) - && z!=z2 - ){ - if( stem(&z, "ta", "ate", 0) || - stem(&z, "lb", "ble", 0) || - stem(&z, "zi", "ize", 0) ){ - /* Do nothing. The work was all in the test */ - }else if( doubleConsonant(z) && (*z!='l' && *z!='s' && *z!='z') ){ - z++; - }else if( m_eq_1(z) && star_oh(z) ){ - *(--z) = 'e'; - } - } - - /* Step 1c */ - if( z[0]=='y' && hasVowel(z+1) ){ - z[0] = 'i'; - } - - /* Step 2 */ - switch( z[1] ){ - case 'a': - stem(&z, "lanoita", "ate", m_gt_0) || - stem(&z, "lanoit", "tion", m_gt_0); - break; - case 'c': - stem(&z, "icne", "ence", m_gt_0) || - stem(&z, "icna", "ance", m_gt_0); - break; - case 'e': - stem(&z, "rezi", "ize", m_gt_0); - break; - case 'g': - stem(&z, "igol", "log", m_gt_0); - break; - case 'l': - stem(&z, "ilb", "ble", m_gt_0) || - stem(&z, "illa", "al", m_gt_0) || - stem(&z, "iltne", "ent", m_gt_0) || - stem(&z, "ile", "e", m_gt_0) || - stem(&z, "ilsuo", "ous", m_gt_0); - break; - case 'o': - stem(&z, "noitazi", "ize", m_gt_0) || - stem(&z, "noita", "ate", m_gt_0) || - stem(&z, "rota", "ate", m_gt_0); - break; - case 's': - stem(&z, "msila", "al", m_gt_0) || - stem(&z, "ssenevi", "ive", m_gt_0) || - stem(&z, "ssenluf", "ful", m_gt_0) || - stem(&z, "ssensuo", "ous", m_gt_0); - break; - case 't': - stem(&z, "itila", "al", m_gt_0) || - stem(&z, "itivi", "ive", m_gt_0) || - stem(&z, "itilib", "ble", m_gt_0); - break; - } - - /* Step 3 */ - switch( z[0] ){ - case 'e': - stem(&z, "etaci", "ic", m_gt_0) || - stem(&z, "evita", "", m_gt_0) || - stem(&z, "ezila", "al", m_gt_0); - break; - case 'i': - stem(&z, "itici", "ic", m_gt_0); - break; - case 'l': - stem(&z, "laci", "ic", m_gt_0) || - stem(&z, "luf", "", m_gt_0); - break; - case 's': - stem(&z, "ssen", "", m_gt_0); - break; - } - - /* Step 4 */ - switch( z[1] ){ - case 'a': - if( z[0]=='l' && m_gt_1(z+2) ){ - z += 2; - } - break; - case 'c': - if( z[0]=='e' && z[2]=='n' && (z[3]=='a' || z[3]=='e') && m_gt_1(z+4) ){ - z += 4; - } - break; - case 'e': - if( z[0]=='r' && m_gt_1(z+2) ){ - z += 2; - } - break; - case 'i': - if( z[0]=='c' && m_gt_1(z+2) ){ - z += 2; - } - break; - case 'l': - if( z[0]=='e' && z[2]=='b' && (z[3]=='a' || z[3]=='i') && m_gt_1(z+4) ){ - z += 4; - } - break; - case 'n': - if( z[0]=='t' ){ - if( z[2]=='a' ){ - if( m_gt_1(z+3) ){ - z += 3; - } - }else if( z[2]=='e' ){ - stem(&z, "tneme", "", m_gt_1) || - stem(&z, "tnem", "", m_gt_1) || - stem(&z, "tne", "", m_gt_1); - } - } - break; - case 'o': - if( z[0]=='u' ){ - if( m_gt_1(z+2) ){ - z += 2; - } - }else if( z[3]=='s' || z[3]=='t' ){ - stem(&z, "noi", "", m_gt_1); - } - break; - case 's': - if( z[0]=='m' && z[2]=='i' && m_gt_1(z+3) ){ - z += 3; - } - break; - case 't': - stem(&z, "eta", "", m_gt_1) || - stem(&z, "iti", "", m_gt_1); - break; - case 'u': - if( z[0]=='s' && z[2]=='o' && m_gt_1(z+3) ){ - z += 3; - } - break; - case 'v': - case 'z': - if( z[0]=='e' && z[2]=='i' && m_gt_1(z+3) ){ - z += 3; - } - break; - } - - /* Step 5a */ - if( z[0]=='e' ){ - if( m_gt_1(z+1) ){ - z++; - }else if( m_eq_1(z+1) && !star_oh(z+1) ){ - z++; - } - } - - /* Step 5b */ - if( m_gt_1(z) && z[0]=='l' && z[1]=='l' ){ - z++; - } - - /* z[] is now the stemmed word in reverse order. Flip it back - ** around into forward order and return. - */ - *pnOut = i = strlen(z); - zOut[i] = 0; - while( *z ){ - zOut[--i] = *(z++); - } -} - -/* -** Characters that can be part of a token. We assume any character -** whose value is greater than 0x80 (any UTF character) can be -** part of a token. In other words, delimiters all must have -** values of 0x7f or lower. -*/ -static const char porterIdChar[] = { -/* x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 xA xB xC xD xE xF */ - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, /* 3x */ - 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 4x */ - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, /* 5x */ - 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 6x */ - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, /* 7x */ -}; -#define isDelim(C) (((ch=C)&0x80)==0 && (ch<0x30 || !porterIdChar[ch-0x30])) - -/* -** Extract the next token from a tokenization cursor. The cursor must -** have been opened by a prior call to porterOpen(). -*/ -static int porterNext( - sqlite3_tokenizer_cursor *pCursor, /* Cursor returned by porterOpen */ - const char **pzToken, /* OUT: *pzToken is the token text */ - int *pnBytes, /* OUT: Number of bytes in token */ - int *piStartOffset, /* OUT: Starting offset of token */ - int *piEndOffset, /* OUT: Ending offset of token */ - int *piPosition /* OUT: Position integer of token */ -){ - porter_tokenizer_cursor *c = (porter_tokenizer_cursor *) pCursor; - const char *z = c->zInput; - - while( c->iOffsetnInput ){ - int iStartOffset, ch; - - /* Scan past delimiter characters */ - while( c->iOffsetnInput && isDelim(z[c->iOffset]) ){ - c->iOffset++; - } - - /* Count non-delimiter characters. */ - iStartOffset = c->iOffset; - while( c->iOffsetnInput && !isDelim(z[c->iOffset]) ){ - c->iOffset++; - } - - if( c->iOffset>iStartOffset ){ - int n = c->iOffset-iStartOffset; - if( n>c->nAllocated ){ - c->nAllocated = n+20; - c->zToken = sqlite3_realloc(c->zToken, c->nAllocated); - if( c->zToken==NULL ) return SQLITE_NOMEM; - } - porter_stemmer(&z[iStartOffset], n, c->zToken, pnBytes); - *pzToken = c->zToken; - *piStartOffset = iStartOffset; - *piEndOffset = c->iOffset; - *piPosition = c->iToken++; - return SQLITE_OK; - } - } - return SQLITE_DONE; -} - -/* -** The set of routines that implement the porter-stemmer tokenizer -*/ -static const sqlite3_tokenizer_module porterTokenizerModule = { - 0, - porterCreate, - porterDestroy, - porterOpen, - porterClose, - porterNext, -}; - -/* -** Allocate a new porter tokenizer. Return a pointer to the new -** tokenizer in *ppModule -*/ -void sqlite3Fts2PorterTokenizerModule( - sqlite3_tokenizer_module const**ppModule -){ - *ppModule = &porterTokenizerModule; -} - -#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS2) */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/fts2_tokenizer.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/fts2_tokenizer.c deleted file mode 100644 index 2e3f382792..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/fts2_tokenizer.c +++ /dev/null @@ -1,371 +0,0 @@ -/* -** 2007 June 22 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This is part of an SQLite module implementing full-text search. -** This particular file implements the generic tokenizer interface. -*/ - -/* -** The code in this file is only compiled if: -** -** * The FTS2 module is being built as an extension -** (in which case SQLITE_CORE is not defined), or -** -** * The FTS2 module is being built into the core of -** SQLite (in which case SQLITE_ENABLE_FTS2 is defined). -*/ -#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS2) - - -#include "sqlite3.h" -#include "sqlite3ext.h" -SQLITE_EXTENSION_INIT1 - -#include "fts2_hash.h" -#include "fts2_tokenizer.h" -#include - -/* -** Implementation of the SQL scalar function for accessing the underlying -** hash table. This function may be called as follows: -** -** SELECT (); -** SELECT (, ); -** -** where is the name passed as the second argument -** to the sqlite3Fts2InitHashTable() function (e.g. 'fts2_tokenizer'). -** -** If the argument is specified, it must be a blob value -** containing a pointer to be stored as the hash data corresponding -** to the string . If is not specified, then -** the string must already exist in the has table. Otherwise, -** an error is returned. -** -** Whether or not the argument is specified, the value returned -** is a blob containing the pointer stored as the hash data corresponding -** to string (after the hash-table is updated, if applicable). -*/ -static void scalarFunc( - sqlite3_context *context, - int argc, - sqlite3_value **argv -){ - fts2Hash *pHash; - void *pPtr = 0; - const unsigned char *zName; - int nName; - - assert( argc==1 || argc==2 ); - - pHash = (fts2Hash *)sqlite3_user_data(context); - - zName = sqlite3_value_text(argv[0]); - nName = sqlite3_value_bytes(argv[0])+1; - - if( argc==2 ){ - void *pOld; - int n = sqlite3_value_bytes(argv[1]); - if( n!=sizeof(pPtr) ){ - sqlite3_result_error(context, "argument type mismatch", -1); - return; - } - pPtr = *(void **)sqlite3_value_blob(argv[1]); - pOld = sqlite3Fts2HashInsert(pHash, (void *)zName, nName, pPtr); - if( pOld==pPtr ){ - sqlite3_result_error(context, "out of memory", -1); - return; - } - }else{ - pPtr = sqlite3Fts2HashFind(pHash, zName, nName); - if( !pPtr ){ - char *zErr = sqlite3_mprintf("unknown tokenizer: %s", zName); - sqlite3_result_error(context, zErr, -1); - sqlite3_free(zErr); - return; - } - } - - sqlite3_result_blob(context, (void *)&pPtr, sizeof(pPtr), SQLITE_TRANSIENT); -} - -#ifdef SQLITE_TEST - -#include -#include - -/* -** Implementation of a special SQL scalar function for testing tokenizers -** designed to be used in concert with the Tcl testing framework. This -** function must be called with two arguments: -** -** SELECT (, ); -** SELECT (, ); -** -** where is the name passed as the second argument -** to the sqlite3Fts2InitHashTable() function (e.g. 'fts2_tokenizer') -** concatenated with the string '_test' (e.g. 'fts2_tokenizer_test'). -** -** The return value is a string that may be interpreted as a Tcl -** list. For each token in the , three elements are -** added to the returned list. The first is the token position, the -** second is the token text (folded, stemmed, etc.) and the third is the -** substring of associated with the token. For example, -** using the built-in "simple" tokenizer: -** -** SELECT fts_tokenizer_test('simple', 'I don't see how'); -** -** will return the string: -** -** "{0 i I 1 dont don't 2 see see 3 how how}" -** -*/ -static void testFunc( - sqlite3_context *context, - int argc, - sqlite3_value **argv -){ - fts2Hash *pHash; - sqlite3_tokenizer_module *p; - sqlite3_tokenizer *pTokenizer = 0; - sqlite3_tokenizer_cursor *pCsr = 0; - - const char *zErr = 0; - - const char *zName; - int nName; - const char *zInput; - int nInput; - - const char *zArg = 0; - - const char *zToken; - int nToken; - int iStart; - int iEnd; - int iPos; - - Tcl_Obj *pRet; - - assert( argc==2 || argc==3 ); - - nName = sqlite3_value_bytes(argv[0]); - zName = (const char *)sqlite3_value_text(argv[0]); - nInput = sqlite3_value_bytes(argv[argc-1]); - zInput = (const char *)sqlite3_value_text(argv[argc-1]); - - if( argc==3 ){ - zArg = (const char *)sqlite3_value_text(argv[1]); - } - - pHash = (fts2Hash *)sqlite3_user_data(context); - p = (sqlite3_tokenizer_module *)sqlite3Fts2HashFind(pHash, zName, nName+1); - - if( !p ){ - char *zErr = sqlite3_mprintf("unknown tokenizer: %s", zName); - sqlite3_result_error(context, zErr, -1); - sqlite3_free(zErr); - return; - } - - pRet = Tcl_NewObj(); - Tcl_IncrRefCount(pRet); - - if( SQLITE_OK!=p->xCreate(zArg ? 1 : 0, &zArg, &pTokenizer) ){ - zErr = "error in xCreate()"; - goto finish; - } - pTokenizer->pModule = p; - if( SQLITE_OK!=p->xOpen(pTokenizer, zInput, nInput, &pCsr) ){ - zErr = "error in xOpen()"; - goto finish; - } - pCsr->pTokenizer = pTokenizer; - - while( SQLITE_OK==p->xNext(pCsr, &zToken, &nToken, &iStart, &iEnd, &iPos) ){ - Tcl_ListObjAppendElement(0, pRet, Tcl_NewIntObj(iPos)); - Tcl_ListObjAppendElement(0, pRet, Tcl_NewStringObj(zToken, nToken)); - zToken = &zInput[iStart]; - nToken = iEnd-iStart; - Tcl_ListObjAppendElement(0, pRet, Tcl_NewStringObj(zToken, nToken)); - } - - if( SQLITE_OK!=p->xClose(pCsr) ){ - zErr = "error in xClose()"; - goto finish; - } - if( SQLITE_OK!=p->xDestroy(pTokenizer) ){ - zErr = "error in xDestroy()"; - goto finish; - } - -finish: - if( zErr ){ - sqlite3_result_error(context, zErr, -1); - }else{ - sqlite3_result_text(context, Tcl_GetString(pRet), -1, SQLITE_TRANSIENT); - } - Tcl_DecrRefCount(pRet); -} - -static -int registerTokenizer( - sqlite3 *db, - char *zName, - const sqlite3_tokenizer_module *p -){ - int rc; - sqlite3_stmt *pStmt; - const char zSql[] = "SELECT fts2_tokenizer(?, ?)"; - - rc = sqlite3_prepare_v2(db, zSql, -1, &pStmt, 0); - if( rc!=SQLITE_OK ){ - return rc; - } - - sqlite3_bind_text(pStmt, 1, zName, -1, SQLITE_STATIC); - sqlite3_bind_blob(pStmt, 2, &p, sizeof(p), SQLITE_STATIC); - sqlite3_step(pStmt); - - return sqlite3_finalize(pStmt); -} - -static -int queryFts2Tokenizer( - sqlite3 *db, - char *zName, - const sqlite3_tokenizer_module **pp -){ - int rc; - sqlite3_stmt *pStmt; - const char zSql[] = "SELECT fts2_tokenizer(?)"; - - *pp = 0; - rc = sqlite3_prepare_v2(db, zSql, -1, &pStmt, 0); - if( rc!=SQLITE_OK ){ - return rc; - } - - sqlite3_bind_text(pStmt, 1, zName, -1, SQLITE_STATIC); - if( SQLITE_ROW==sqlite3_step(pStmt) ){ - if( sqlite3_column_type(pStmt, 0)==SQLITE_BLOB ){ - memcpy(pp, sqlite3_column_blob(pStmt, 0), sizeof(*pp)); - } - } - - return sqlite3_finalize(pStmt); -} - -void sqlite3Fts2SimpleTokenizerModule(sqlite3_tokenizer_module const**ppModule); - -/* -** Implementation of the scalar function fts2_tokenizer_internal_test(). -** This function is used for testing only, it is not included in the -** build unless SQLITE_TEST is defined. -** -** The purpose of this is to test that the fts2_tokenizer() function -** can be used as designed by the C-code in the queryFts2Tokenizer and -** registerTokenizer() functions above. These two functions are repeated -** in the README.tokenizer file as an example, so it is important to -** test them. -** -** To run the tests, evaluate the fts2_tokenizer_internal_test() scalar -** function with no arguments. An assert() will fail if a problem is -** detected. i.e.: -** -** SELECT fts2_tokenizer_internal_test(); -** -*/ -static void intTestFunc( - sqlite3_context *context, - int argc, - sqlite3_value **argv -){ - int rc; - const sqlite3_tokenizer_module *p1; - const sqlite3_tokenizer_module *p2; - sqlite3 *db = (sqlite3 *)sqlite3_user_data(context); - - /* Test the query function */ - sqlite3Fts2SimpleTokenizerModule(&p1); - rc = queryFts2Tokenizer(db, "simple", &p2); - assert( rc==SQLITE_OK ); - assert( p1==p2 ); - rc = queryFts2Tokenizer(db, "nosuchtokenizer", &p2); - assert( rc==SQLITE_ERROR ); - assert( p2==0 ); - assert( 0==strcmp(sqlite3_errmsg(db), "unknown tokenizer: nosuchtokenizer") ); - - /* Test the storage function */ - rc = registerTokenizer(db, "nosuchtokenizer", p1); - assert( rc==SQLITE_OK ); - rc = queryFts2Tokenizer(db, "nosuchtokenizer", &p2); - assert( rc==SQLITE_OK ); - assert( p2==p1 ); - - sqlite3_result_text(context, "ok", -1, SQLITE_STATIC); -} - -#endif - -/* -** Set up SQL objects in database db used to access the contents of -** the hash table pointed to by argument pHash. The hash table must -** been initialised to use string keys, and to take a private copy -** of the key when a value is inserted. i.e. by a call similar to: -** -** sqlite3Fts2HashInit(pHash, FTS2_HASH_STRING, 1); -** -** This function adds a scalar function (see header comment above -** scalarFunc() in this file for details) and, if ENABLE_TABLE is -** defined at compilation time, a temporary virtual table (see header -** comment above struct HashTableVtab) to the database schema. Both -** provide read/write access to the contents of *pHash. -** -** The third argument to this function, zName, is used as the name -** of both the scalar and, if created, the virtual table. -*/ -int sqlite3Fts2InitHashTable( - sqlite3 *db, - fts2Hash *pHash, - const char *zName -){ - int rc = SQLITE_OK; - void *p = (void *)pHash; - const int any = SQLITE_ANY; - char *zTest = 0; - char *zTest2 = 0; - -#ifdef SQLITE_TEST - void *pdb = (void *)db; - zTest = sqlite3_mprintf("%s_test", zName); - zTest2 = sqlite3_mprintf("%s_internal_test", zName); - if( !zTest || !zTest2 ){ - rc = SQLITE_NOMEM; - } -#endif - - if( rc!=SQLITE_OK - || (rc = sqlite3_create_function(db, zName, 1, any, p, scalarFunc, 0, 0)) - || (rc = sqlite3_create_function(db, zName, 2, any, p, scalarFunc, 0, 0)) -#ifdef SQLITE_TEST - || (rc = sqlite3_create_function(db, zTest, 2, any, p, testFunc, 0, 0)) - || (rc = sqlite3_create_function(db, zTest, 3, any, p, testFunc, 0, 0)) - || (rc = sqlite3_create_function(db, zTest2, 0, any, pdb, intTestFunc, 0, 0)) -#endif - ); - - sqlite3_free(zTest); - sqlite3_free(zTest2); - return rc; -} - -#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS2) */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/fts2_tokenizer.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/fts2_tokenizer.h deleted file mode 100644 index 5f2eb26e91..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/fts2_tokenizer.h +++ /dev/null @@ -1,145 +0,0 @@ -/* -** 2006 July 10 -** -** The author disclaims copyright to this source code. -** -************************************************************************* -** Defines the interface to tokenizers used by fulltext-search. There -** are three basic components: -** -** sqlite3_tokenizer_module is a singleton defining the tokenizer -** interface functions. This is essentially the class structure for -** tokenizers. -** -** sqlite3_tokenizer is used to define a particular tokenizer, perhaps -** including customization information defined at creation time. -** -** sqlite3_tokenizer_cursor is generated by a tokenizer to generate -** tokens from a particular input. -*/ -#ifndef _FTS2_TOKENIZER_H_ -#define _FTS2_TOKENIZER_H_ - -/* TODO(shess) Only used for SQLITE_OK and SQLITE_DONE at this time. -** If tokenizers are to be allowed to call sqlite3_*() functions, then -** we will need a way to register the API consistently. -*/ -#include "sqlite3.h" - -/* -** Structures used by the tokenizer interface. When a new tokenizer -** implementation is registered, the caller provides a pointer to -** an sqlite3_tokenizer_module containing pointers to the callback -** functions that make up an implementation. -** -** When an fts2 table is created, it passes any arguments passed to -** the tokenizer clause of the CREATE VIRTUAL TABLE statement to the -** sqlite3_tokenizer_module.xCreate() function of the requested tokenizer -** implementation. The xCreate() function in turn returns an -** sqlite3_tokenizer structure representing the specific tokenizer to -** be used for the fts2 table (customized by the tokenizer clause arguments). -** -** To tokenize an input buffer, the sqlite3_tokenizer_module.xOpen() -** method is called. It returns an sqlite3_tokenizer_cursor object -** that may be used to tokenize a specific input buffer based on -** the tokenization rules supplied by a specific sqlite3_tokenizer -** object. -*/ -typedef struct sqlite3_tokenizer_module sqlite3_tokenizer_module; -typedef struct sqlite3_tokenizer sqlite3_tokenizer; -typedef struct sqlite3_tokenizer_cursor sqlite3_tokenizer_cursor; - -struct sqlite3_tokenizer_module { - - /* - ** Structure version. Should always be set to 0. - */ - int iVersion; - - /* - ** Create a new tokenizer. The values in the argv[] array are the - ** arguments passed to the "tokenizer" clause of the CREATE VIRTUAL - ** TABLE statement that created the fts2 table. For example, if - ** the following SQL is executed: - ** - ** CREATE .. USING fts2( ... , tokenizer arg1 arg2) - ** - ** then argc is set to 2, and the argv[] array contains pointers - ** to the strings "arg1" and "arg2". - ** - ** This method should return either SQLITE_OK (0), or an SQLite error - ** code. If SQLITE_OK is returned, then *ppTokenizer should be set - ** to point at the newly created tokenizer structure. The generic - ** sqlite3_tokenizer.pModule variable should not be initialised by - ** this callback. The caller will do so. - */ - int (*xCreate)( - int argc, /* Size of argv array */ - const char *const*argv, /* Tokenizer argument strings */ - sqlite3_tokenizer **ppTokenizer /* OUT: Created tokenizer */ - ); - - /* - ** Destroy an existing tokenizer. The fts2 module calls this method - ** exactly once for each successful call to xCreate(). - */ - int (*xDestroy)(sqlite3_tokenizer *pTokenizer); - - /* - ** Create a tokenizer cursor to tokenize an input buffer. The caller - ** is responsible for ensuring that the input buffer remains valid - ** until the cursor is closed (using the xClose() method). - */ - int (*xOpen)( - sqlite3_tokenizer *pTokenizer, /* Tokenizer object */ - const char *pInput, int nBytes, /* Input buffer */ - sqlite3_tokenizer_cursor **ppCursor /* OUT: Created tokenizer cursor */ - ); - - /* - ** Destroy an existing tokenizer cursor. The fts2 module calls this - ** method exactly once for each successful call to xOpen(). - */ - int (*xClose)(sqlite3_tokenizer_cursor *pCursor); - - /* - ** Retrieve the next token from the tokenizer cursor pCursor. This - ** method should either return SQLITE_OK and set the values of the - ** "OUT" variables identified below, or SQLITE_DONE to indicate that - ** the end of the buffer has been reached, or an SQLite error code. - ** - ** *ppToken should be set to point at a buffer containing the - ** normalized version of the token (i.e. after any case-folding and/or - ** stemming has been performed). *pnBytes should be set to the length - ** of this buffer in bytes. The input text that generated the token is - ** identified by the byte offsets returned in *piStartOffset and - ** *piEndOffset. - ** - ** The buffer *ppToken is set to point at is managed by the tokenizer - ** implementation. It is only required to be valid until the next call - ** to xNext() or xClose(). - */ - /* TODO(shess) current implementation requires pInput to be - ** nul-terminated. This should either be fixed, or pInput/nBytes - ** should be converted to zInput. - */ - int (*xNext)( - sqlite3_tokenizer_cursor *pCursor, /* Tokenizer cursor */ - const char **ppToken, int *pnBytes, /* OUT: Normalized text for token */ - int *piStartOffset, /* OUT: Byte offset of token in input buffer */ - int *piEndOffset, /* OUT: Byte offset of end of token in input buffer */ - int *piPosition /* OUT: Number of tokens returned before this one */ - ); -}; - -struct sqlite3_tokenizer { - const sqlite3_tokenizer_module *pModule; /* The module for this tokenizer */ - /* Tokenizer implementations will typically add additional fields */ -}; - -struct sqlite3_tokenizer_cursor { - sqlite3_tokenizer *pTokenizer; /* Tokenizer for this cursor. */ - /* Tokenizer implementations will typically add additional fields */ -}; - -#endif /* _FTS2_TOKENIZER_H_ */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/fts2_tokenizer1.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/fts2_tokenizer1.c deleted file mode 100644 index 0ad872d86c..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/fts2_tokenizer1.c +++ /dev/null @@ -1,230 +0,0 @@ -/* -** 2006 Oct 10 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** Implementation of the "simple" full-text-search tokenizer. -*/ - -/* -** The code in this file is only compiled if: -** -** * The FTS2 module is being built as an extension -** (in which case SQLITE_CORE is not defined), or -** -** * The FTS2 module is being built into the core of -** SQLite (in which case SQLITE_ENABLE_FTS2 is defined). -*/ -#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS2) - - -#include -#include -#include -#include - -#include "fts2_tokenizer.h" - -typedef struct simple_tokenizer { - sqlite3_tokenizer base; - char delim[128]; /* flag ASCII delimiters */ -} simple_tokenizer; - -typedef struct simple_tokenizer_cursor { - sqlite3_tokenizer_cursor base; - const char *pInput; /* input we are tokenizing */ - int nBytes; /* size of the input */ - int iOffset; /* current position in pInput */ - int iToken; /* index of next token to be returned */ - char *pToken; /* storage for current token */ - int nTokenAllocated; /* space allocated to zToken buffer */ -} simple_tokenizer_cursor; - - -/* Forward declaration */ -static const sqlite3_tokenizer_module simpleTokenizerModule; - -static int simpleDelim(simple_tokenizer *t, unsigned char c){ - return c<0x80 && t->delim[c]; -} - -/* -** Create a new tokenizer instance. -*/ -static int simpleCreate( - int argc, const char * const *argv, - sqlite3_tokenizer **ppTokenizer -){ - simple_tokenizer *t; - - t = (simple_tokenizer *) sqlite3_malloc(sizeof(*t)); - if( t==NULL ) return SQLITE_NOMEM; - memset(t, 0, sizeof(*t)); - - /* TODO(shess) Delimiters need to remain the same from run to run, - ** else we need to reindex. One solution would be a meta-table to - ** track such information in the database, then we'd only want this - ** information on the initial create. - */ - if( argc>1 ){ - int i, n = strlen(argv[1]); - for(i=0; i=0x80 ){ - sqlite3_free(t); - return SQLITE_ERROR; - } - t->delim[ch] = 1; - } - } else { - /* Mark non-alphanumeric ASCII characters as delimiters */ - int i; - for(i=1; i<0x80; i++){ - t->delim[i] = !((i>='0' && i<='9') || (i>='A' && i<='Z') || - (i>='a' && i<='z')); - } - } - - *ppTokenizer = &t->base; - return SQLITE_OK; -} - -/* -** Destroy a tokenizer -*/ -static int simpleDestroy(sqlite3_tokenizer *pTokenizer){ - sqlite3_free(pTokenizer); - return SQLITE_OK; -} - -/* -** Prepare to begin tokenizing a particular string. The input -** string to be tokenized is pInput[0..nBytes-1]. A cursor -** used to incrementally tokenize this string is returned in -** *ppCursor. -*/ -static int simpleOpen( - sqlite3_tokenizer *pTokenizer, /* The tokenizer */ - const char *pInput, int nBytes, /* String to be tokenized */ - sqlite3_tokenizer_cursor **ppCursor /* OUT: Tokenization cursor */ -){ - simple_tokenizer_cursor *c; - - c = (simple_tokenizer_cursor *) sqlite3_malloc(sizeof(*c)); - if( c==NULL ) return SQLITE_NOMEM; - - c->pInput = pInput; - if( pInput==0 ){ - c->nBytes = 0; - }else if( nBytes<0 ){ - c->nBytes = (int)strlen(pInput); - }else{ - c->nBytes = nBytes; - } - c->iOffset = 0; /* start tokenizing at the beginning */ - c->iToken = 0; - c->pToken = NULL; /* no space allocated, yet. */ - c->nTokenAllocated = 0; - - *ppCursor = &c->base; - return SQLITE_OK; -} - -/* -** Close a tokenization cursor previously opened by a call to -** simpleOpen() above. -*/ -static int simpleClose(sqlite3_tokenizer_cursor *pCursor){ - simple_tokenizer_cursor *c = (simple_tokenizer_cursor *) pCursor; - sqlite3_free(c->pToken); - sqlite3_free(c); - return SQLITE_OK; -} - -/* -** Extract the next token from a tokenization cursor. The cursor must -** have been opened by a prior call to simpleOpen(). -*/ -static int simpleNext( - sqlite3_tokenizer_cursor *pCursor, /* Cursor returned by simpleOpen */ - const char **ppToken, /* OUT: *ppToken is the token text */ - int *pnBytes, /* OUT: Number of bytes in token */ - int *piStartOffset, /* OUT: Starting offset of token */ - int *piEndOffset, /* OUT: Ending offset of token */ - int *piPosition /* OUT: Position integer of token */ -){ - simple_tokenizer_cursor *c = (simple_tokenizer_cursor *) pCursor; - simple_tokenizer *t = (simple_tokenizer *) pCursor->pTokenizer; - unsigned char *p = (unsigned char *)c->pInput; - - while( c->iOffsetnBytes ){ - int iStartOffset; - - /* Scan past delimiter characters */ - while( c->iOffsetnBytes && simpleDelim(t, p[c->iOffset]) ){ - c->iOffset++; - } - - /* Count non-delimiter characters. */ - iStartOffset = c->iOffset; - while( c->iOffsetnBytes && !simpleDelim(t, p[c->iOffset]) ){ - c->iOffset++; - } - - if( c->iOffset>iStartOffset ){ - int i, n = c->iOffset-iStartOffset; - if( n>c->nTokenAllocated ){ - c->nTokenAllocated = n+20; - c->pToken = sqlite3_realloc(c->pToken, c->nTokenAllocated); - if( c->pToken==NULL ) return SQLITE_NOMEM; - } - for(i=0; ipToken[i] = (ch>='A' && ch<='Z') ? (ch - 'A' + 'a') : ch; - } - *ppToken = c->pToken; - *pnBytes = n; - *piStartOffset = iStartOffset; - *piEndOffset = c->iOffset; - *piPosition = c->iToken++; - - return SQLITE_OK; - } - } - return SQLITE_DONE; -} - -/* -** The set of routines that implement the simple tokenizer -*/ -static const sqlite3_tokenizer_module simpleTokenizerModule = { - 0, - simpleCreate, - simpleDestroy, - simpleOpen, - simpleClose, - simpleNext, -}; - -/* -** Allocate a new simple tokenizer. Return a pointer to the new -** tokenizer in *ppModule -*/ -void sqlite3Fts2SimpleTokenizerModule( - sqlite3_tokenizer_module const**ppModule -){ - *ppModule = &simpleTokenizerModule; -} - -#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS2) */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/mkfts2amal.tcl b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/mkfts2amal.tcl deleted file mode 100644 index 7eee34689a..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts2/mkfts2amal.tcl +++ /dev/null @@ -1,116 +0,0 @@ -#!/usr/bin/tclsh -# -# This script builds a single C code file holding all of FTS2 code. -# The name of the output file is fts2amal.c. To build this file, -# first do: -# -# make target_source -# -# The make target above moves all of the source code files into -# a subdirectory named "tsrc". (This script expects to find the files -# there and will not work if they are not found.) -# -# After the "tsrc" directory has been created and populated, run -# this script: -# -# tclsh mkfts2amal.tcl -# -# The amalgamated FTS2 code will be written into fts2amal.c -# - -# Open the output file and write a header comment at the beginning -# of the file. -# -set out [open fts2amal.c w] -set today [clock format [clock seconds] -format "%Y-%m-%d %H:%M:%S UTC" -gmt 1] -puts $out [subst \ -{/****************************************************************************** -** This file is an amalgamation of separate C source files from the SQLite -** Full Text Search extension 2 (fts2). By combining all the individual C -** code files into this single large file, the entire code can be compiled -** as a one translation unit. This allows many compilers to do optimizations -** that would not be possible if the files were compiled separately. It also -** makes the code easier to import into other projects. -** -** This amalgamation was generated on $today. -*/}] - -# These are the header files used by FTS2. The first time any of these -# files are seen in a #include statement in the C code, include the complete -# text of the file in-line. The file only needs to be included once. -# -foreach hdr { - fts2.h - fts2_hash.h - fts2_tokenizer.h - sqlite3.h - sqlite3ext.h -} { - set available_hdr($hdr) 1 -} - -# 78 stars used for comment formatting. -set s78 \ -{*****************************************************************************} - -# Insert a comment into the code -# -proc section_comment {text} { - global out s78 - set n [string length $text] - set nstar [expr {60 - $n}] - set stars [string range $s78 0 $nstar] - puts $out "/************** $text $stars/" -} - -# Read the source file named $filename and write it into the -# sqlite3.c output file. If any #include statements are seen, -# process them approprately. -# -proc copy_file {filename} { - global seen_hdr available_hdr out - set tail [file tail $filename] - section_comment "Begin file $tail" - set in [open $filename r] - while {![eof $in]} { - set line [gets $in] - if {[regexp {^#\s*include\s+["<]([^">]+)[">]} $line all hdr]} { - if {[info exists available_hdr($hdr)]} { - if {$available_hdr($hdr)} { - section_comment "Include $hdr in the middle of $tail" - copy_file tsrc/$hdr - section_comment "Continuing where we left off in $tail" - } - } elseif {![info exists seen_hdr($hdr)]} { - set seen_hdr($hdr) 1 - puts $out $line - } - } elseif {[regexp {^#ifdef __cplusplus} $line]} { - puts $out "#if 0" - } elseif {[regexp {^#line} $line]} { - # Skip #line directives. - } else { - puts $out $line - } - } - close $in - section_comment "End of $tail" -} - - -# Process the source files. Process files containing commonly -# used subroutines first in order to help the compiler find -# inlining opportunities. -# -foreach file { - fts2.c - fts2_hash.c - fts2_porter.c - fts2_tokenizer.c - fts2_tokenizer1.c - fts2_icu.c -} { - copy_file tsrc/$file -} - -close $out diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/README.content b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/README.content deleted file mode 100644 index 01f0c52ec2..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/README.content +++ /dev/null @@ -1,178 +0,0 @@ - -FTS4 CONTENT OPTION - - Normally, in order to create a full-text index on a dataset, the FTS4 - module stores a copy of all indexed documents in a specially created - database table. - - As of SQLite version 3.7.9, FTS4 supports a new option - "content" - - designed to extend FTS4 to support the creation of full-text indexes where: - - * The indexed documents are not stored within the SQLite database - at all (a "contentless" FTS4 table), or - - * The indexed documents are stored in a database table created and - managed by the user (an "external content" FTS4 table). - - Because the indexed documents themselves are usually much larger than - the full-text index, the content option can sometimes be used to achieve - significant space savings. - -CONTENTLESS FTS4 TABLES - - In order to create an FTS4 table that does not store a copy of the indexed - documents at all, the content option should be set to an empty string. - For example, the following SQL creates such an FTS4 table with three - columns - "a", "b", and "c": - - CREATE VIRTUAL TABLE t1 USING fts4(content="", a, b, c); - - Data can be inserted into such an FTS4 table using an INSERT statements. - However, unlike ordinary FTS4 tables, the user must supply an explicit - integer docid value. For example: - - -- This statement is Ok: - INSERT INTO t1(docid, a, b, c) VALUES(1, 'a b c', 'd e f', 'g h i'); - - -- This statement causes an error, as no docid value has been provided: - INSERT INTO t1(a, b, c) VALUES('j k l', 'm n o', 'p q r'); - - It is not possible to UPDATE or DELETE a row stored in a contentless FTS4 - table. Attempting to do so is an error. - - Contentless FTS4 tables also support SELECT statements. However, it is - an error to attempt to retrieve the value of any table column other than - the docid column. The auxiliary function matchinfo() may be used, but - snippet() and offsets() may not. For example: - - -- The following statements are Ok: - SELECT docid FROM t1 WHERE t1 MATCH 'xxx'; - SELECT docid FROM t1 WHERE a MATCH 'xxx'; - SELECT matchinfo(t1) FROM t1 WHERE t1 MATCH 'xxx'; - - -- The following statements all cause errors, as the value of columns - -- other than docid are required to evaluate them. - SELECT * FROM t1; - SELECT a, b FROM t1 WHERE t1 MATCH 'xxx'; - SELECT docid FROM t1 WHERE a LIKE 'xxx%'; - SELECT snippet(t1) FROM t1 WHERE t1 MATCH 'xxx'; - - Errors related to attempting to retrieve column values other than docid - are runtime errors that occur within sqlite3_step(). In some cases, for - example if the MATCH expression in a SELECT query matches zero rows, there - may be no error at all even if a statement does refer to column values - other than docid. - -EXTERNAL CONTENT FTS4 TABLES - - An "external content" FTS4 table is similar to a contentless table, except - that if evaluation of a query requires the value of a column other than - docid, FTS4 attempts to retrieve that value from a table (or view, or - virtual table) nominated by the user (hereafter referred to as the "content - table"). The FTS4 module never writes to the content table, and writing - to the content table does not affect the full-text index. It is the - responsibility of the user to ensure that the content table and the - full-text index are consistent. - - An external content FTS4 table is created by setting the content option - to the name of a table (or view, or virtual table) that may be queried by - FTS4 to retrieve column values when required. If the nominated table does - not exist, then an external content table behaves in the same way as - a contentless table. For example: - - CREATE TABLE t2(id INTEGER PRIMARY KEY, a, b, c); - CREATE VIRTUAL TABLE t3 USING fts4(content="t2", a, c); - - Assuming the nominated table does exist, then its columns must be the same - as or a superset of those defined for the FTS table. - - When a users query on the FTS table requires a column value other than - docid, FTS attempts to read this value from the corresponding column of - the row in the content table with a rowid value equal to the current FTS - docid. Or, if such a row cannot be found in the content table, a NULL - value is used instead. For example: - - CREATE TABLE t2(id INTEGER PRIMARY KEY, a, b, c, d); - CREATE VIRTUAL TABLE t3 USING fts4(content="t2", b, c); - - INSERT INTO t2 VALUES(2, 'a b', 'c d', 'e f'); - INSERT INTO t2 VALUES(3, 'g h', 'i j', 'k l'); - INSERT INTO t3(docid, b, c) SELECT id, b, c FROM t2; - - -- The following query returns a single row with two columns containing - -- the text values "i j" and "k l". - -- - -- The query uses the full-text index to discover that the MATCH - -- term matches the row with docid=3. It then retrieves the values - -- of columns b and c from the row with rowid=3 in the content table - -- to return. - -- - SELECT * FROM t3 WHERE t3 MATCH 'k'; - - -- Following the UPDATE, the query still returns a single row, this - -- time containing the text values "xxx" and "yyy". This is because the - -- full-text index still indicates that the row with docid=3 matches - -- the FTS4 query 'k', even though the documents stored in the content - -- table have been modified. - -- - UPDATE t2 SET b = 'xxx', c = 'yyy' WHERE rowid = 3; - SELECT * FROM t3 WHERE t3 MATCH 'k'; - - -- Following the DELETE below, the query returns one row containing two - -- NULL values. NULL values are returned because FTS is unable to find - -- a row with rowid=3 within the content table. - -- - DELETE FROM t2; - SELECT * FROM t3 WHERE t3 MATCH 'k'; - - When a row is deleted from an external content FTS4 table, FTS4 needs to - retrieve the column values of the row being deleted from the content table. - This is so that FTS4 can update the full-text index entries for each token - that occurs within the deleted row to indicate that that row has been - deleted. If the content table row cannot be found, or if it contains values - inconsistent with the contents of the FTS index, the results can be difficult - to predict. The FTS index may be left containing entries corresponding to the - deleted row, which can lead to seemingly nonsensical results being returned - by subsequent SELECT queries. The same applies when a row is updated, as - internally an UPDATE is the same as a DELETE followed by an INSERT. - - Instead of writing separately to the full-text index and the content table, - some users may wish to use database triggers to keep the full-text index - up to date with respect to the set of documents stored in the content table. - For example, using the tables from earlier examples: - - CREATE TRIGGER t2_bu BEFORE UPDATE ON t2 BEGIN - DELETE FROM t3 WHERE docid=old.rowid; - END; - CREATE TRIGGER t2_bd BEFORE DELETE ON t2 BEGIN - DELETE FROM t3 WHERE docid=old.rowid; - END; - - CREATE TRIGGER t2_bu AFTER UPDATE ON t2 BEGIN - INSERT INTO t3(docid, b, c) VALUES(new.rowid, new.b, new.c); - END; - CREATE TRIGGER t2_bd AFTER INSERT ON t2 BEGIN - INSERT INTO t3(docid, b, c) VALUES(new.rowid, new.b, new.c); - END; - - The DELETE trigger must be fired before the actual delete takes place - on the content table. This is so that FTS4 can still retrieve the original - values in order to update the full-text index. And the INSERT trigger must - be fired after the new row is inserted, so as to handle the case where the - rowid is assigned automatically within the system. The UPDATE trigger must - be split into two parts, one fired before and one after the update of the - content table, for the same reasons. - - FTS4 features a special command similar to the 'optimize' command that - deletes the entire full-text index and rebuilds it based on the current - set of documents in the content table. Assuming again that "t3" is the - name of the external content FTS4 table, the command is: - - INSERT INTO t3(t3) VALUES('rebuild'); - - This command may also be used with ordinary FTS4 tables, although it may - only be useful if the full-text index has somehow become corrupt. It is an - error to attempt to rebuild the full-text index maintained by a contentless - FTS4 table. - - diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/README.syntax b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/README.syntax deleted file mode 100644 index aab3a979ba..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/README.syntax +++ /dev/null @@ -1,209 +0,0 @@ - -1. OVERVIEW - - This README file describes the syntax of the arguments that may be passed to - the FTS3 MATCH operator used for full-text queries. For example, if table - "t1" is an Fts3 virtual table, the following SQL query: - - SELECT * FROM t1 WHERE MATCH - - may be used to retrieve all rows that match a specified for full-text query. - The text "" should be replaced by either the name of the fts3 table - (in this case "t1"), or by the name of one of the columns of the fts3 - table. should be replaced by an SQL expression that - computes to a string containing an Fts3 query. - - If the left-hand-side of the MATCH operator is set to the name of the - fts3 table, then by default the query may be matched against any column - of the table. If it is set to a column name, then by default the query - may only match the specified column. In both cases this may be overriden - as part of the query text (see sections 2 and 3 below). - - As of SQLite version 3.6.8, Fts3 supports two slightly different query - formats; the standard syntax, which is used by default, and the enhanced - query syntax which can be selected by compiling with the pre-processor - symbol SQLITE_ENABLE_FTS3_PARENTHESIS defined. - - -DSQLITE_ENABLE_FTS3_PARENTHESIS - -2. STANDARD QUERY SYNTAX - - When using the standard Fts3 query syntax, a query usually consists of a - list of terms (words) separated by white-space characters. To match a - query, a row (or column) of an Fts3 table must contain each of the specified - terms. For example, the following query: - - MATCH 'hello world' - - matches rows (or columns, if is the name of a column name) that - contain at least one instance of the token "hello", and at least one - instance of the token "world". Tokens may be grouped into phrases using - quotation marks. In this case, a matching row or column must contain each - of the tokens in the phrase in the order specified, with no intervening - tokens. For example, the query: - - MATCH '"hello world" joe" - - matches the first of the following two documents, but not the second or - third: - - "'Hello world', said Joe." - "One should always greet the world with a cheery hello, thought Joe." - "How many hello world programs could their be?" - - As well as grouping tokens together by phrase, the binary NEAR operator - may be used to search for rows that contain two or more specified tokens - or phrases within a specified proximity of each other. The NEAR operator - must always be specified in upper case. The word "near" in lower or mixed - case is treated as an ordinary token. For example, the following query: - - MATCH 'engineering NEAR consultancy' - - matches rows that contain both the "engineering" and "consultancy" tokens - in the same column with not more than 10 other words between them. It does - not matter which of the two terms occurs first in the document, only that - they be seperated by only 10 tokens or less. The user may also specify - a different required proximity by adding "/N" immediately after the NEAR - operator, where N is an integer. For example: - - MATCH 'engineering NEAR/5 consultancy' - - searches for a row containing an instance of each specified token seperated - by not more than 5 other tokens. More than one NEAR operator can be used - in as sequence. For example this query: - - MATCH 'reliable NEAR/2 engineering NEAR/5 consultancy' - - searches for a row that contains an instance of the token "reliable" - seperated by not more than two tokens from an instance of "engineering", - which is in turn separated by not more than 5 other tokens from an - instance of the term "consultancy". Phrases enclosed in quotes may - also be used as arguments to the NEAR operator. - - Similar to the NEAR operator, one or more tokens or phrases may be - separated by OR operators. In this case, only one of the specified tokens - or phrases must appear in the document. For example, the query: - - MATCH 'hello OR world' - - matches rows that contain either the term "hello", or the term "world", - or both. Note that unlike in many programming languages, the OR operator - has a higher precedence than the AND operators implied between white-space - separated tokens. The following query matches documents that contain the - term 'sqlite' and at least one of the terms 'fantastic' or 'impressive', - not those that contain both 'sqlite' and 'fantastic' or 'impressive': - - MATCH 'sqlite fantastic OR impressive' - - Any token that is part of an Fts3 query expression, whether or not it is - part of a phrase enclosed in quotes, may have a '*' character appended to - it. In this case, the token matches all terms that begin with the characters - of the token, not just those that exactly match it. For example, the - following query: - - MATCH 'sql*' - - matches all rows that contain the term "SQLite", as well as those that - contain "SQL". - - A token that is not part of a quoted phrase may be preceded by a '-' - character, which indicates that matching rows must not contain the - specified term. For example, the following: - - MATCH '"database engine" -sqlite' - - matches rows that contain the phrase "database engine" but do not contain - the term "sqlite". If the '-' character occurs inside a quoted phrase, - it is ignored. It is possible to use both the '-' prefix and the '*' postfix - on a single term. At this time, all Fts3 queries must contain at least - one term or phrase that is not preceded by the '-' prefix. - - Regardless of whether or not a table name or column name is used on the - left hand side of the MATCH operator, a specific column of the fts3 table - may be associated with each token in a query by preceding a token with - a column name followed by a ':' character. For example, regardless of what - is specified for , the following query requires that column "col1" - of the table contains the term "hello", and that column "col2" of the - table contains the term "world". If the table does not contain columns - named "col1" and "col2", then an error is returned and the query is - not run. - - MATCH 'col1:hello col2:world' - - It is not possible to associate a specific table column with a quoted - phrase or a term preceded by a '-' operator. A '*' character may be - appended to a term associated with a specific column for prefix matching. - -3. ENHANCED QUERY SYNTAX - - The enhanced query syntax is quite similar to the standard query syntax, - with the following four differences: - - 1) Parenthesis are supported. When using the enhanced query syntax, - parenthesis may be used to overcome the built-in precedence of the - supplied binary operators. For example, the following query: - - MATCH '(hello world) OR (simple example)' - - matches documents that contain both "hello" and "world", and documents - that contain both "simple" and "example". It is not possible to forumlate - such a query using the standard syntax. - - 2) Instead of separating tokens and phrases by whitespace, an AND operator - may be explicitly specified. This does not change query processing at - all, but may be used to improve readability. For example, the following - query is handled identically to the one above: - - MATCH '(hello AND world) OR (simple AND example)' - - As with the OR and NEAR operators, the AND operator must be specified - in upper case. The word "and" specified in lower or mixed case is - handled as a regular token. - - 3) The '-' token prefix is not supported. Instead, a new binary operator, - NOT, is included. The NOT operator requires that the query specified - as its left-hand operator matches, but that the query specified as the - right-hand operator does not. For example, to query for all rows that - contain the term "example" but not the term "simple", the following - query could be used: - - MATCH 'example NOT simple' - - As for all other operators, the NOT operator must be specified in - upper case. Otherwise it will be treated as a regular token. - - 4) Unlike in the standard syntax, where the OR operator has a higher - precedence than the implicit AND operator, when using the enhanced - syntax implicit and explict AND operators have a higher precedence - than OR operators. Using the enhanced syntax, the following two - queries are equivalent: - - MATCH 'sqlite fantastic OR impressive' - MATCH '(sqlite AND fantastic) OR impressive' - - however, when using the standard syntax, the query: - - MATCH 'sqlite fantastic OR impressive' - - is equivalent to the enhanced syntax query: - - MATCH 'sqlite AND (fantastic OR impressive)' - - The precedence of all enhanced syntax operators, in order from highest - to lowest, is: - - NEAR (highest precedence, tightest grouping) - NOT - AND - OR (lowest precedence, loosest grouping) - - Using the advanced syntax, it is possible to specify expressions enclosed - in parenthesis as operands to the NOT, AND and OR operators. However both - the left and right hand side operands of NEAR operators must be either - tokens or phrases. Attempting the following query will return an error: - - MATCH 'sqlite NEAR (fantastic OR impressive)' - - Queries of this form must be re-written as: - - MATCH 'sqlite NEAR fantastic OR sqlite NEAR impressive' diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/README.tokenizers b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/README.tokenizers deleted file mode 100644 index 60769b7a3d..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/README.tokenizers +++ /dev/null @@ -1,133 +0,0 @@ - -1. FTS3 Tokenizers - - When creating a new full-text table, FTS3 allows the user to select - the text tokenizer implementation to be used when indexing text - by specifying a "tokenize" clause as part of the CREATE VIRTUAL TABLE - statement: - - CREATE VIRTUAL TABLE USING fts3( - [, tokenize []] - ); - - The built-in tokenizers (valid values to pass as ) are - "simple" and "porter". - - should consist of zero or more white-space separated - arguments to pass to the selected tokenizer implementation. The - interpretation of the arguments, if any, depends on the individual - tokenizer. - -2. Custom Tokenizers - - FTS3 allows users to provide custom tokenizer implementations. The - interface used to create a new tokenizer is defined and described in - the fts3_tokenizer.h source file. - - Registering a new FTS3 tokenizer is similar to registering a new - virtual table module with SQLite. The user passes a pointer to a - structure containing pointers to various callback functions that - make up the implementation of the new tokenizer type. For tokenizers, - the structure (defined in fts3_tokenizer.h) is called - "sqlite3_tokenizer_module". - - FTS3 does not expose a C-function that users call to register new - tokenizer types with a database handle. Instead, the pointer must - be encoded as an SQL blob value and passed to FTS3 through the SQL - engine by evaluating a special scalar function, "fts3_tokenizer()". - The fts3_tokenizer() function may be called with one or two arguments, - as follows: - - SELECT fts3_tokenizer(); - SELECT fts3_tokenizer(, ); - - Where is a string identifying the tokenizer and - is a pointer to an sqlite3_tokenizer_module - structure encoded as an SQL blob. If the second argument is present, - it is registered as tokenizer and a copy of it - returned. If only one argument is passed, a pointer to the tokenizer - implementation currently registered as is returned, - encoded as a blob. Or, if no such tokenizer exists, an SQL exception - (error) is raised. - - SECURITY: If the fts3 extension is used in an environment where potentially - malicious users may execute arbitrary SQL (i.e. gears), they should be - prevented from invoking the fts3_tokenizer() function, possibly using the - authorisation callback. - - See "Sample code" below for an example of calling the fts3_tokenizer() - function from C code. - -3. ICU Library Tokenizers - - If this extension is compiled with the SQLITE_ENABLE_ICU pre-processor - symbol defined, then there exists a built-in tokenizer named "icu" - implemented using the ICU library. The first argument passed to the - xCreate() method (see fts3_tokenizer.h) of this tokenizer may be - an ICU locale identifier. For example "tr_TR" for Turkish as used - in Turkey, or "en_AU" for English as used in Australia. For example: - - "CREATE VIRTUAL TABLE thai_text USING fts3(text, tokenizer icu th_TH)" - - The ICU tokenizer implementation is very simple. It splits the input - text according to the ICU rules for finding word boundaries and discards - any tokens that consist entirely of white-space. This may be suitable - for some applications in some locales, but not all. If more complex - processing is required, for example to implement stemming or - discard punctuation, this can be done by creating a tokenizer - implementation that uses the ICU tokenizer as part of its implementation. - - When using the ICU tokenizer this way, it is safe to overwrite the - contents of the strings returned by the xNext() method (see - fts3_tokenizer.h). - -4. Sample code. - - The following two code samples illustrate the way C code should invoke - the fts3_tokenizer() scalar function: - - int registerTokenizer( - sqlite3 *db, - char *zName, - const sqlite3_tokenizer_module *p - ){ - int rc; - sqlite3_stmt *pStmt; - const char zSql[] = "SELECT fts3_tokenizer(?, ?)"; - - rc = sqlite3_prepare_v2(db, zSql, -1, &pStmt, 0); - if( rc!=SQLITE_OK ){ - return rc; - } - - sqlite3_bind_text(pStmt, 1, zName, -1, SQLITE_STATIC); - sqlite3_bind_blob(pStmt, 2, &p, sizeof(p), SQLITE_STATIC); - sqlite3_step(pStmt); - - return sqlite3_finalize(pStmt); - } - - int queryTokenizer( - sqlite3 *db, - char *zName, - const sqlite3_tokenizer_module **pp - ){ - int rc; - sqlite3_stmt *pStmt; - const char zSql[] = "SELECT fts3_tokenizer(?)"; - - *pp = 0; - rc = sqlite3_prepare_v2(db, zSql, -1, &pStmt, 0); - if( rc!=SQLITE_OK ){ - return rc; - } - - sqlite3_bind_text(pStmt, 1, zName, -1, SQLITE_STATIC); - if( SQLITE_ROW==sqlite3_step(pStmt) ){ - if( sqlite3_column_type(pStmt, 0)==SQLITE_BLOB ){ - memcpy(pp, sqlite3_column_blob(pStmt, 0), sizeof(*pp)); - } - } - - return sqlite3_finalize(pStmt); - } diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/README.txt b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/README.txt deleted file mode 100644 index ae41af156e..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/README.txt +++ /dev/null @@ -1,4 +0,0 @@ -This folder contains source code to the second full-text search -extension for SQLite. While the API is the same, this version uses a -substantially different storage schema from fts1, so tables will need -to be rebuilt. diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3.c deleted file mode 100644 index 0b11e90128..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3.c +++ /dev/null @@ -1,5092 +0,0 @@ -/* -** 2006 Oct 10 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This is an SQLite module implementing full-text search. -*/ - -/* -** The code in this file is only compiled if: -** -** * The FTS3 module is being built as an extension -** (in which case SQLITE_CORE is not defined), or -** -** * The FTS3 module is being built into the core of -** SQLite (in which case SQLITE_ENABLE_FTS3 is defined). -*/ - -/* The full-text index is stored in a series of b+tree (-like) -** structures called segments which map terms to doclists. The -** structures are like b+trees in layout, but are constructed from the -** bottom up in optimal fashion and are not updatable. Since trees -** are built from the bottom up, things will be described from the -** bottom up. -** -** -**** Varints **** -** The basic unit of encoding is a variable-length integer called a -** varint. We encode variable-length integers in little-endian order -** using seven bits * per byte as follows: -** -** KEY: -** A = 0xxxxxxx 7 bits of data and one flag bit -** B = 1xxxxxxx 7 bits of data and one flag bit -** -** 7 bits - A -** 14 bits - BA -** 21 bits - BBA -** and so on. -** -** This is similar in concept to how sqlite encodes "varints" but -** the encoding is not the same. SQLite varints are big-endian -** are are limited to 9 bytes in length whereas FTS3 varints are -** little-endian and can be up to 10 bytes in length (in theory). -** -** Example encodings: -** -** 1: 0x01 -** 127: 0x7f -** 128: 0x81 0x00 -** -** -**** Document lists **** -** A doclist (document list) holds a docid-sorted list of hits for a -** given term. Doclists hold docids and associated token positions. -** A docid is the unique integer identifier for a single document. -** A position is the index of a word within the document. The first -** word of the document has a position of 0. -** -** FTS3 used to optionally store character offsets using a compile-time -** option. But that functionality is no longer supported. -** -** A doclist is stored like this: -** -** array { -** varint docid; -** array { (position list for column 0) -** varint position; (2 more than the delta from previous position) -** } -** array { -** varint POS_COLUMN; (marks start of position list for new column) -** varint column; (index of new column) -** array { -** varint position; (2 more than the delta from previous position) -** } -** } -** varint POS_END; (marks end of positions for this document. -** } -** -** Here, array { X } means zero or more occurrences of X, adjacent in -** memory. A "position" is an index of a token in the token stream -** generated by the tokenizer. Note that POS_END and POS_COLUMN occur -** in the same logical place as the position element, and act as sentinals -** ending a position list array. POS_END is 0. POS_COLUMN is 1. -** The positions numbers are not stored literally but rather as two more -** than the difference from the prior position, or the just the position plus -** 2 for the first position. Example: -** -** label: A B C D E F G H I J K -** value: 123 5 9 1 1 14 35 0 234 72 0 -** -** The 123 value is the first docid. For column zero in this document -** there are two matches at positions 3 and 10 (5-2 and 9-2+3). The 1 -** at D signals the start of a new column; the 1 at E indicates that the -** new column is column number 1. There are two positions at 12 and 45 -** (14-2 and 35-2+12). The 0 at H indicate the end-of-document. The -** 234 at I is the next docid. It has one position 72 (72-2) and then -** terminates with the 0 at K. -** -** A "position-list" is the list of positions for multiple columns for -** a single docid. A "column-list" is the set of positions for a single -** column. Hence, a position-list consists of one or more column-lists, -** a document record consists of a docid followed by a position-list and -** a doclist consists of one or more document records. -** -** A bare doclist omits the position information, becoming an -** array of varint-encoded docids. -** -**** Segment leaf nodes **** -** Segment leaf nodes store terms and doclists, ordered by term. Leaf -** nodes are written using LeafWriter, and read using LeafReader (to -** iterate through a single leaf node's data) and LeavesReader (to -** iterate through a segment's entire leaf layer). Leaf nodes have -** the format: -** -** varint iHeight; (height from leaf level, always 0) -** varint nTerm; (length of first term) -** char pTerm[nTerm]; (content of first term) -** varint nDoclist; (length of term's associated doclist) -** char pDoclist[nDoclist]; (content of doclist) -** array { -** (further terms are delta-encoded) -** varint nPrefix; (length of prefix shared with previous term) -** varint nSuffix; (length of unshared suffix) -** char pTermSuffix[nSuffix];(unshared suffix of next term) -** varint nDoclist; (length of term's associated doclist) -** char pDoclist[nDoclist]; (content of doclist) -** } -** -** Here, array { X } means zero or more occurrences of X, adjacent in -** memory. -** -** Leaf nodes are broken into blocks which are stored contiguously in -** the %_segments table in sorted order. This means that when the end -** of a node is reached, the next term is in the node with the next -** greater node id. -** -** New data is spilled to a new leaf node when the current node -** exceeds LEAF_MAX bytes (default 2048). New data which itself is -** larger than STANDALONE_MIN (default 1024) is placed in a standalone -** node (a leaf node with a single term and doclist). The goal of -** these settings is to pack together groups of small doclists while -** making it efficient to directly access large doclists. The -** assumption is that large doclists represent terms which are more -** likely to be query targets. -** -** TODO(shess) It may be useful for blocking decisions to be more -** dynamic. For instance, it may make more sense to have a 2.5k leaf -** node rather than splitting into 2k and .5k nodes. My intuition is -** that this might extend through 2x or 4x the pagesize. -** -** -**** Segment interior nodes **** -** Segment interior nodes store blockids for subtree nodes and terms -** to describe what data is stored by the each subtree. Interior -** nodes are written using InteriorWriter, and read using -** InteriorReader. InteriorWriters are created as needed when -** SegmentWriter creates new leaf nodes, or when an interior node -** itself grows too big and must be split. The format of interior -** nodes: -** -** varint iHeight; (height from leaf level, always >0) -** varint iBlockid; (block id of node's leftmost subtree) -** optional { -** varint nTerm; (length of first term) -** char pTerm[nTerm]; (content of first term) -** array { -** (further terms are delta-encoded) -** varint nPrefix; (length of shared prefix with previous term) -** varint nSuffix; (length of unshared suffix) -** char pTermSuffix[nSuffix]; (unshared suffix of next term) -** } -** } -** -** Here, optional { X } means an optional element, while array { X } -** means zero or more occurrences of X, adjacent in memory. -** -** An interior node encodes n terms separating n+1 subtrees. The -** subtree blocks are contiguous, so only the first subtree's blockid -** is encoded. The subtree at iBlockid will contain all terms less -** than the first term encoded (or all terms if no term is encoded). -** Otherwise, for terms greater than or equal to pTerm[i] but less -** than pTerm[i+1], the subtree for that term will be rooted at -** iBlockid+i. Interior nodes only store enough term data to -** distinguish adjacent children (if the rightmost term of the left -** child is "something", and the leftmost term of the right child is -** "wicked", only "w" is stored). -** -** New data is spilled to a new interior node at the same height when -** the current node exceeds INTERIOR_MAX bytes (default 2048). -** INTERIOR_MIN_TERMS (default 7) keeps large terms from monopolizing -** interior nodes and making the tree too skinny. The interior nodes -** at a given height are naturally tracked by interior nodes at -** height+1, and so on. -** -** -**** Segment directory **** -** The segment directory in table %_segdir stores meta-information for -** merging and deleting segments, and also the root node of the -** segment's tree. -** -** The root node is the top node of the segment's tree after encoding -** the entire segment, restricted to ROOT_MAX bytes (default 1024). -** This could be either a leaf node or an interior node. If the top -** node requires more than ROOT_MAX bytes, it is flushed to %_segments -** and a new root interior node is generated (which should always fit -** within ROOT_MAX because it only needs space for 2 varints, the -** height and the blockid of the previous root). -** -** The meta-information in the segment directory is: -** level - segment level (see below) -** idx - index within level -** - (level,idx uniquely identify a segment) -** start_block - first leaf node -** leaves_end_block - last leaf node -** end_block - last block (including interior nodes) -** root - contents of root node -** -** If the root node is a leaf node, then start_block, -** leaves_end_block, and end_block are all 0. -** -** -**** Segment merging **** -** To amortize update costs, segments are grouped into levels and -** merged in batches. Each increase in level represents exponentially -** more documents. -** -** New documents (actually, document updates) are tokenized and -** written individually (using LeafWriter) to a level 0 segment, with -** incrementing idx. When idx reaches MERGE_COUNT (default 16), all -** level 0 segments are merged into a single level 1 segment. Level 1 -** is populated like level 0, and eventually MERGE_COUNT level 1 -** segments are merged to a single level 2 segment (representing -** MERGE_COUNT^2 updates), and so on. -** -** A segment merge traverses all segments at a given level in -** parallel, performing a straightforward sorted merge. Since segment -** leaf nodes are written in to the %_segments table in order, this -** merge traverses the underlying sqlite disk structures efficiently. -** After the merge, all segment blocks from the merged level are -** deleted. -** -** MERGE_COUNT controls how often we merge segments. 16 seems to be -** somewhat of a sweet spot for insertion performance. 32 and 64 show -** very similar performance numbers to 16 on insertion, though they're -** a tiny bit slower (perhaps due to more overhead in merge-time -** sorting). 8 is about 20% slower than 16, 4 about 50% slower than -** 16, 2 about 66% slower than 16. -** -** At query time, high MERGE_COUNT increases the number of segments -** which need to be scanned and merged. For instance, with 100k docs -** inserted: -** -** MERGE_COUNT segments -** 16 25 -** 8 12 -** 4 10 -** 2 6 -** -** This appears to have only a moderate impact on queries for very -** frequent terms (which are somewhat dominated by segment merge -** costs), and infrequent and non-existent terms still seem to be fast -** even with many segments. -** -** TODO(shess) That said, it would be nice to have a better query-side -** argument for MERGE_COUNT of 16. Also, it is possible/likely that -** optimizations to things like doclist merging will swing the sweet -** spot around. -** -** -** -**** Handling of deletions and updates **** -** Since we're using a segmented structure, with no docid-oriented -** index into the term index, we clearly cannot simply update the term -** index when a document is deleted or updated. For deletions, we -** write an empty doclist (varint(docid) varint(POS_END)), for updates -** we simply write the new doclist. Segment merges overwrite older -** data for a particular docid with newer data, so deletes or updates -** will eventually overtake the earlier data and knock it out. The -** query logic likewise merges doclists so that newer data knocks out -** older data. -** -** TODO(shess) Provide a VACUUM type operation to clear out all -** deletions and duplications. This would basically be a forced merge -** into a single segment. -*/ - -#include "fts3Int.h" -#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) - -#if defined(SQLITE_ENABLE_FTS3) && !defined(SQLITE_CORE) -# define SQLITE_CORE 1 -#endif - -#include -#include -#include -#include -#include -#include - -#include "fts3.h" -#ifndef SQLITE_CORE -# include "sqlite3ext.h" - SQLITE_EXTENSION_INIT1 -#endif - -static int fts3EvalNext(Fts3Cursor *pCsr); -static int fts3EvalStart(Fts3Cursor *pCsr); -static int fts3TermSegReaderCursor( - Fts3Cursor *, const char *, int, int, Fts3MultiSegReader **); - -/* -** Write a 64-bit variable-length integer to memory starting at p[0]. -** The length of data written will be between 1 and FTS3_VARINT_MAX bytes. -** The number of bytes written is returned. -*/ -int sqlite3Fts3PutVarint(char *p, sqlite_int64 v){ - unsigned char *q = (unsigned char *) p; - sqlite_uint64 vu = v; - do{ - *q++ = (unsigned char) ((vu & 0x7f) | 0x80); - vu >>= 7; - }while( vu!=0 ); - q[-1] &= 0x7f; /* turn off high bit in final byte */ - assert( q - (unsigned char *)p <= FTS3_VARINT_MAX ); - return (int) (q - (unsigned char *)p); -} - -/* -** Read a 64-bit variable-length integer from memory starting at p[0]. -** Return the number of bytes read, or 0 on error. -** The value is stored in *v. -*/ -int sqlite3Fts3GetVarint(const char *p, sqlite_int64 *v){ - const unsigned char *q = (const unsigned char *) p; - sqlite_uint64 x = 0, y = 1; - while( (*q&0x80)==0x80 && q-(unsigned char *)p>= 7; - }while( v!=0 ); - return i; -} - -/* -** Convert an SQL-style quoted string into a normal string by removing -** the quote characters. The conversion is done in-place. If the -** input does not begin with a quote character, then this routine -** is a no-op. -** -** Examples: -** -** "abc" becomes abc -** 'xyz' becomes xyz -** [pqr] becomes pqr -** `mno` becomes mno -** -*/ -void sqlite3Fts3Dequote(char *z){ - char quote; /* Quote character (if any ) */ - - quote = z[0]; - if( quote=='[' || quote=='\'' || quote=='"' || quote=='`' ){ - int iIn = 1; /* Index of next byte to read from input */ - int iOut = 0; /* Index of next byte to write to output */ - - /* If the first byte was a '[', then the close-quote character is a ']' */ - if( quote=='[' ) quote = ']'; - - while( ALWAYS(z[iIn]) ){ - if( z[iIn]==quote ){ - if( z[iIn+1]!=quote ) break; - z[iOut++] = quote; - iIn += 2; - }else{ - z[iOut++] = z[iIn++]; - } - } - z[iOut] = '\0'; - } -} - -/* -** Read a single varint from the doclist at *pp and advance *pp to point -** to the first byte past the end of the varint. Add the value of the varint -** to *pVal. -*/ -static void fts3GetDeltaVarint(char **pp, sqlite3_int64 *pVal){ - sqlite3_int64 iVal; - *pp += sqlite3Fts3GetVarint(*pp, &iVal); - *pVal += iVal; -} - -/* -** When this function is called, *pp points to the first byte following a -** varint that is part of a doclist (or position-list, or any other list -** of varints). This function moves *pp to point to the start of that varint, -** and sets *pVal by the varint value. -** -** Argument pStart points to the first byte of the doclist that the -** varint is part of. -*/ -static void fts3GetReverseVarint( - char **pp, - char *pStart, - sqlite3_int64 *pVal -){ - sqlite3_int64 iVal; - char *p; - - /* Pointer p now points at the first byte past the varint we are - ** interested in. So, unless the doclist is corrupt, the 0x80 bit is - ** clear on character p[-1]. */ - for(p = (*pp)-2; p>=pStart && *p&0x80; p--); - p++; - *pp = p; - - sqlite3Fts3GetVarint(p, &iVal); - *pVal = iVal; -} - -/* -** The xDisconnect() virtual table method. -*/ -static int fts3DisconnectMethod(sqlite3_vtab *pVtab){ - Fts3Table *p = (Fts3Table *)pVtab; - int i; - - assert( p->nPendingData==0 ); - assert( p->pSegments==0 ); - - /* Free any prepared statements held */ - for(i=0; iaStmt); i++){ - sqlite3_finalize(p->aStmt[i]); - } - sqlite3_free(p->zSegmentsTbl); - sqlite3_free(p->zReadExprlist); - sqlite3_free(p->zWriteExprlist); - sqlite3_free(p->zContentTbl); - - /* Invoke the tokenizer destructor to free the tokenizer. */ - p->pTokenizer->pModule->xDestroy(p->pTokenizer); - - sqlite3_free(p); - return SQLITE_OK; -} - -/* -** Construct one or more SQL statements from the format string given -** and then evaluate those statements. The success code is written -** into *pRc. -** -** If *pRc is initially non-zero then this routine is a no-op. -*/ -static void fts3DbExec( - int *pRc, /* Success code */ - sqlite3 *db, /* Database in which to run SQL */ - const char *zFormat, /* Format string for SQL */ - ... /* Arguments to the format string */ -){ - va_list ap; - char *zSql; - if( *pRc ) return; - va_start(ap, zFormat); - zSql = sqlite3_vmprintf(zFormat, ap); - va_end(ap); - if( zSql==0 ){ - *pRc = SQLITE_NOMEM; - }else{ - *pRc = sqlite3_exec(db, zSql, 0, 0, 0); - sqlite3_free(zSql); - } -} - -/* -** The xDestroy() virtual table method. -*/ -static int fts3DestroyMethod(sqlite3_vtab *pVtab){ - Fts3Table *p = (Fts3Table *)pVtab; - int rc = SQLITE_OK; /* Return code */ - const char *zDb = p->zDb; /* Name of database (e.g. "main", "temp") */ - sqlite3 *db = p->db; /* Database handle */ - - /* Drop the shadow tables */ - if( p->zContentTbl==0 ){ - fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_content'", zDb, p->zName); - } - fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_segments'", zDb,p->zName); - fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_segdir'", zDb, p->zName); - fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_docsize'", zDb, p->zName); - fts3DbExec(&rc, db, "DROP TABLE IF EXISTS %Q.'%q_stat'", zDb, p->zName); - - /* If everything has worked, invoke fts3DisconnectMethod() to free the - ** memory associated with the Fts3Table structure and return SQLITE_OK. - ** Otherwise, return an SQLite error code. - */ - return (rc==SQLITE_OK ? fts3DisconnectMethod(pVtab) : rc); -} - - -/* -** Invoke sqlite3_declare_vtab() to declare the schema for the FTS3 table -** passed as the first argument. This is done as part of the xConnect() -** and xCreate() methods. -** -** If *pRc is non-zero when this function is called, it is a no-op. -** Otherwise, if an error occurs, an SQLite error code is stored in *pRc -** before returning. -*/ -static void fts3DeclareVtab(int *pRc, Fts3Table *p){ - if( *pRc==SQLITE_OK ){ - int i; /* Iterator variable */ - int rc; /* Return code */ - char *zSql; /* SQL statement passed to declare_vtab() */ - char *zCols; /* List of user defined columns */ - - sqlite3_vtab_config(p->db, SQLITE_VTAB_CONSTRAINT_SUPPORT, 1); - - /* Create a list of user columns for the virtual table */ - zCols = sqlite3_mprintf("%Q, ", p->azColumn[0]); - for(i=1; zCols && inColumn; i++){ - zCols = sqlite3_mprintf("%z%Q, ", zCols, p->azColumn[i]); - } - - /* Create the whole "CREATE TABLE" statement to pass to SQLite */ - zSql = sqlite3_mprintf( - "CREATE TABLE x(%s %Q HIDDEN, docid HIDDEN)", zCols, p->zName - ); - if( !zCols || !zSql ){ - rc = SQLITE_NOMEM; - }else{ - rc = sqlite3_declare_vtab(p->db, zSql); - } - - sqlite3_free(zSql); - sqlite3_free(zCols); - *pRc = rc; - } -} - -/* -** Create the backing store tables (%_content, %_segments and %_segdir) -** required by the FTS3 table passed as the only argument. This is done -** as part of the vtab xCreate() method. -** -** If the p->bHasDocsize boolean is true (indicating that this is an -** FTS4 table, not an FTS3 table) then also create the %_docsize and -** %_stat tables required by FTS4. -*/ -static int fts3CreateTables(Fts3Table *p){ - int rc = SQLITE_OK; /* Return code */ - int i; /* Iterator variable */ - sqlite3 *db = p->db; /* The database connection */ - - if( p->zContentTbl==0 ){ - char *zContentCols; /* Columns of %_content table */ - - /* Create a list of user columns for the content table */ - zContentCols = sqlite3_mprintf("docid INTEGER PRIMARY KEY"); - for(i=0; zContentCols && inColumn; i++){ - char *z = p->azColumn[i]; - zContentCols = sqlite3_mprintf("%z, 'c%d%q'", zContentCols, i, z); - } - if( zContentCols==0 ) rc = SQLITE_NOMEM; - - /* Create the content table */ - fts3DbExec(&rc, db, - "CREATE TABLE %Q.'%q_content'(%s)", - p->zDb, p->zName, zContentCols - ); - sqlite3_free(zContentCols); - } - - /* Create other tables */ - fts3DbExec(&rc, db, - "CREATE TABLE %Q.'%q_segments'(blockid INTEGER PRIMARY KEY, block BLOB);", - p->zDb, p->zName - ); - fts3DbExec(&rc, db, - "CREATE TABLE %Q.'%q_segdir'(" - "level INTEGER," - "idx INTEGER," - "start_block INTEGER," - "leaves_end_block INTEGER," - "end_block INTEGER," - "root BLOB," - "PRIMARY KEY(level, idx)" - ");", - p->zDb, p->zName - ); - if( p->bHasDocsize ){ - fts3DbExec(&rc, db, - "CREATE TABLE %Q.'%q_docsize'(docid INTEGER PRIMARY KEY, size BLOB);", - p->zDb, p->zName - ); - } - if( p->bHasStat ){ - fts3DbExec(&rc, db, - "CREATE TABLE %Q.'%q_stat'(id INTEGER PRIMARY KEY, value BLOB);", - p->zDb, p->zName - ); - } - return rc; -} - -/* -** Store the current database page-size in bytes in p->nPgsz. -** -** If *pRc is non-zero when this function is called, it is a no-op. -** Otherwise, if an error occurs, an SQLite error code is stored in *pRc -** before returning. -*/ -static void fts3DatabasePageSize(int *pRc, Fts3Table *p){ - if( *pRc==SQLITE_OK ){ - int rc; /* Return code */ - char *zSql; /* SQL text "PRAGMA %Q.page_size" */ - sqlite3_stmt *pStmt; /* Compiled "PRAGMA %Q.page_size" statement */ - - zSql = sqlite3_mprintf("PRAGMA %Q.page_size", p->zDb); - if( !zSql ){ - rc = SQLITE_NOMEM; - }else{ - rc = sqlite3_prepare(p->db, zSql, -1, &pStmt, 0); - if( rc==SQLITE_OK ){ - sqlite3_step(pStmt); - p->nPgsz = sqlite3_column_int(pStmt, 0); - rc = sqlite3_finalize(pStmt); - }else if( rc==SQLITE_AUTH ){ - p->nPgsz = 1024; - rc = SQLITE_OK; - } - } - assert( p->nPgsz>0 || rc!=SQLITE_OK ); - sqlite3_free(zSql); - *pRc = rc; - } -} - -/* -** "Special" FTS4 arguments are column specifications of the following form: -** -** = -** -** There may not be whitespace surrounding the "=" character. The -** term may be quoted, but the may not. -*/ -static int fts3IsSpecialColumn( - const char *z, - int *pnKey, - char **pzValue -){ - char *zValue; - const char *zCsr = z; - - while( *zCsr!='=' ){ - if( *zCsr=='\0' ) return 0; - zCsr++; - } - - *pnKey = (int)(zCsr-z); - zValue = sqlite3_mprintf("%s", &zCsr[1]); - if( zValue ){ - sqlite3Fts3Dequote(zValue); - } - *pzValue = zValue; - return 1; -} - -/* -** Append the output of a printf() style formatting to an existing string. -*/ -static void fts3Appendf( - int *pRc, /* IN/OUT: Error code */ - char **pz, /* IN/OUT: Pointer to string buffer */ - const char *zFormat, /* Printf format string to append */ - ... /* Arguments for printf format string */ -){ - if( *pRc==SQLITE_OK ){ - va_list ap; - char *z; - va_start(ap, zFormat); - z = sqlite3_vmprintf(zFormat, ap); - if( z && *pz ){ - char *z2 = sqlite3_mprintf("%s%s", *pz, z); - sqlite3_free(z); - z = z2; - } - if( z==0 ) *pRc = SQLITE_NOMEM; - sqlite3_free(*pz); - *pz = z; - } -} - -/* -** Return a copy of input string zInput enclosed in double-quotes (") and -** with all double quote characters escaped. For example: -** -** fts3QuoteId("un \"zip\"") -> "un \"\"zip\"\"" -** -** The pointer returned points to memory obtained from sqlite3_malloc(). It -** is the callers responsibility to call sqlite3_free() to release this -** memory. -*/ -static char *fts3QuoteId(char const *zInput){ - int nRet; - char *zRet; - nRet = 2 + strlen(zInput)*2 + 1; - zRet = sqlite3_malloc(nRet); - if( zRet ){ - int i; - char *z = zRet; - *(z++) = '"'; - for(i=0; zInput[i]; i++){ - if( zInput[i]=='"' ) *(z++) = '"'; - *(z++) = zInput[i]; - } - *(z++) = '"'; - *(z++) = '\0'; - } - return zRet; -} - -/* -** Return a list of comma separated SQL expressions and a FROM clause that -** could be used in a SELECT statement such as the following: -** -** SELECT FROM %_content AS x ... -** -** to return the docid, followed by each column of text data in order -** from left to write. If parameter zFunc is not NULL, then instead of -** being returned directly each column of text data is passed to an SQL -** function named zFunc first. For example, if zFunc is "unzip" and the -** table has the three user-defined columns "a", "b", and "c", the following -** string is returned: -** -** "docid, unzip(x.'a'), unzip(x.'b'), unzip(x.'c') FROM %_content AS x" -** -** The pointer returned points to a buffer allocated by sqlite3_malloc(). It -** is the responsibility of the caller to eventually free it. -** -** If *pRc is not SQLITE_OK when this function is called, it is a no-op (and -** a NULL pointer is returned). Otherwise, if an OOM error is encountered -** by this function, NULL is returned and *pRc is set to SQLITE_NOMEM. If -** no error occurs, *pRc is left unmodified. -*/ -static char *fts3ReadExprList(Fts3Table *p, const char *zFunc, int *pRc){ - char *zRet = 0; - char *zFree = 0; - char *zFunction; - int i; - - if( p->zContentTbl==0 ){ - if( !zFunc ){ - zFunction = ""; - }else{ - zFree = zFunction = fts3QuoteId(zFunc); - } - fts3Appendf(pRc, &zRet, "docid"); - for(i=0; inColumn; i++){ - fts3Appendf(pRc, &zRet, ",%s(x.'c%d%q')", zFunction, i, p->azColumn[i]); - } - sqlite3_free(zFree); - }else{ - fts3Appendf(pRc, &zRet, "rowid"); - for(i=0; inColumn; i++){ - fts3Appendf(pRc, &zRet, ", x.'%q'", p->azColumn[i]); - } - } - fts3Appendf(pRc, &zRet, "FROM '%q'.'%q%s' AS x", - p->zDb, - (p->zContentTbl ? p->zContentTbl : p->zName), - (p->zContentTbl ? "" : "_content") - ); - return zRet; -} - -/* -** Return a list of N comma separated question marks, where N is the number -** of columns in the %_content table (one for the docid plus one for each -** user-defined text column). -** -** If argument zFunc is not NULL, then all but the first question mark -** is preceded by zFunc and an open bracket, and followed by a closed -** bracket. For example, if zFunc is "zip" and the FTS3 table has three -** user-defined text columns, the following string is returned: -** -** "?, zip(?), zip(?), zip(?)" -** -** The pointer returned points to a buffer allocated by sqlite3_malloc(). It -** is the responsibility of the caller to eventually free it. -** -** If *pRc is not SQLITE_OK when this function is called, it is a no-op (and -** a NULL pointer is returned). Otherwise, if an OOM error is encountered -** by this function, NULL is returned and *pRc is set to SQLITE_NOMEM. If -** no error occurs, *pRc is left unmodified. -*/ -static char *fts3WriteExprList(Fts3Table *p, const char *zFunc, int *pRc){ - char *zRet = 0; - char *zFree = 0; - char *zFunction; - int i; - - if( !zFunc ){ - zFunction = ""; - }else{ - zFree = zFunction = fts3QuoteId(zFunc); - } - fts3Appendf(pRc, &zRet, "?"); - for(i=0; inColumn; i++){ - fts3Appendf(pRc, &zRet, ",%s(?)", zFunction); - } - sqlite3_free(zFree); - return zRet; -} - -/* -** This function interprets the string at (*pp) as a non-negative integer -** value. It reads the integer and sets *pnOut to the value read, then -** sets *pp to point to the byte immediately following the last byte of -** the integer value. -** -** Only decimal digits ('0'..'9') may be part of an integer value. -** -** If *pp does not being with a decimal digit SQLITE_ERROR is returned and -** the output value undefined. Otherwise SQLITE_OK is returned. -** -** This function is used when parsing the "prefix=" FTS4 parameter. -*/ -static int fts3GobbleInt(const char **pp, int *pnOut){ - const char *p; /* Iterator pointer */ - int nInt = 0; /* Output value */ - - for(p=*pp; p[0]>='0' && p[0]<='9'; p++){ - nInt = nInt * 10 + (p[0] - '0'); - } - if( p==*pp ) return SQLITE_ERROR; - *pnOut = nInt; - *pp = p; - return SQLITE_OK; -} - -/* -** This function is called to allocate an array of Fts3Index structures -** representing the indexes maintained by the current FTS table. FTS tables -** always maintain the main "terms" index, but may also maintain one or -** more "prefix" indexes, depending on the value of the "prefix=" parameter -** (if any) specified as part of the CREATE VIRTUAL TABLE statement. -** -** Argument zParam is passed the value of the "prefix=" option if one was -** specified, or NULL otherwise. -** -** If no error occurs, SQLITE_OK is returned and *apIndex set to point to -** the allocated array. *pnIndex is set to the number of elements in the -** array. If an error does occur, an SQLite error code is returned. -** -** Regardless of whether or not an error is returned, it is the responsibility -** of the caller to call sqlite3_free() on the output array to free it. -*/ -static int fts3PrefixParameter( - const char *zParam, /* ABC in prefix=ABC parameter to parse */ - int *pnIndex, /* OUT: size of *apIndex[] array */ - struct Fts3Index **apIndex /* OUT: Array of indexes for this table */ -){ - struct Fts3Index *aIndex; /* Allocated array */ - int nIndex = 1; /* Number of entries in array */ - - if( zParam && zParam[0] ){ - const char *p; - nIndex++; - for(p=zParam; *p; p++){ - if( *p==',' ) nIndex++; - } - } - - aIndex = sqlite3_malloc(sizeof(struct Fts3Index) * nIndex); - *apIndex = aIndex; - *pnIndex = nIndex; - if( !aIndex ){ - return SQLITE_NOMEM; - } - - memset(aIndex, 0, sizeof(struct Fts3Index) * nIndex); - if( zParam ){ - const char *p = zParam; - int i; - for(i=1; i module name ("fts3" or "fts4") -** argv[1] -> database name -** argv[2] -> table name -** argv[...] -> "column name" and other module argument fields. -*/ -static int fts3InitVtab( - int isCreate, /* True for xCreate, false for xConnect */ - sqlite3 *db, /* The SQLite database connection */ - void *pAux, /* Hash table containing tokenizers */ - int argc, /* Number of elements in argv array */ - const char * const *argv, /* xCreate/xConnect argument array */ - sqlite3_vtab **ppVTab, /* Write the resulting vtab structure here */ - char **pzErr /* Write any error message here */ -){ - Fts3Hash *pHash = (Fts3Hash *)pAux; - Fts3Table *p = 0; /* Pointer to allocated vtab */ - int rc = SQLITE_OK; /* Return code */ - int i; /* Iterator variable */ - int nByte; /* Size of allocation used for *p */ - int iCol; /* Column index */ - int nString = 0; /* Bytes required to hold all column names */ - int nCol = 0; /* Number of columns in the FTS table */ - char *zCsr; /* Space for holding column names */ - int nDb; /* Bytes required to hold database name */ - int nName; /* Bytes required to hold table name */ - int isFts4 = (argv[0][3]=='4'); /* True for FTS4, false for FTS3 */ - const char **aCol; /* Array of column names */ - sqlite3_tokenizer *pTokenizer = 0; /* Tokenizer for this table */ - - int nIndex; /* Size of aIndex[] array */ - struct Fts3Index *aIndex = 0; /* Array of indexes for this table */ - - /* The results of parsing supported FTS4 key=value options: */ - int bNoDocsize = 0; /* True to omit %_docsize table */ - int bDescIdx = 0; /* True to store descending indexes */ - char *zPrefix = 0; /* Prefix parameter value (or NULL) */ - char *zCompress = 0; /* compress=? parameter (or NULL) */ - char *zUncompress = 0; /* uncompress=? parameter (or NULL) */ - char *zContent = 0; /* content=? parameter (or NULL) */ - - assert( strlen(argv[0])==4 ); - assert( (sqlite3_strnicmp(argv[0], "fts4", 4)==0 && isFts4) - || (sqlite3_strnicmp(argv[0], "fts3", 4)==0 && !isFts4) - ); - - nDb = (int)strlen(argv[1]) + 1; - nName = (int)strlen(argv[2]) + 1; - - aCol = (const char **)sqlite3_malloc(sizeof(const char *) * (argc-2) ); - if( !aCol ) return SQLITE_NOMEM; - memset((void *)aCol, 0, sizeof(const char *) * (argc-2)); - - /* Loop through all of the arguments passed by the user to the FTS3/4 - ** module (i.e. all the column names and special arguments). This loop - ** does the following: - ** - ** + Figures out the number of columns the FTSX table will have, and - ** the number of bytes of space that must be allocated to store copies - ** of the column names. - ** - ** + If there is a tokenizer specification included in the arguments, - ** initializes the tokenizer pTokenizer. - */ - for(i=3; rc==SQLITE_OK && i8 - && 0==sqlite3_strnicmp(z, "tokenize", 8) - && 0==sqlite3Fts3IsIdChar(z[8]) - ){ - rc = sqlite3Fts3InitTokenizer(pHash, &z[9], &pTokenizer, pzErr); - } - - /* Check if it is an FTS4 special argument. */ - else if( isFts4 && fts3IsSpecialColumn(z, &nKey, &zVal) ){ - struct Fts4Option { - const char *zOpt; - int nOpt; - } aFts4Opt[] = { - { "matchinfo", 9 }, /* 0 -> MATCHINFO */ - { "prefix", 6 }, /* 1 -> PREFIX */ - { "compress", 8 }, /* 2 -> COMPRESS */ - { "uncompress", 10 }, /* 3 -> UNCOMPRESS */ - { "order", 5 }, /* 4 -> ORDER */ - { "content", 7 } /* 5 -> CONTENT */ - }; - - int iOpt; - if( !zVal ){ - rc = SQLITE_NOMEM; - }else{ - for(iOpt=0; iOptnOpt && !sqlite3_strnicmp(z, pOp->zOpt, pOp->nOpt) ){ - break; - } - } - if( iOpt==SizeofArray(aFts4Opt) ){ - *pzErr = sqlite3_mprintf("unrecognized parameter: %s", z); - rc = SQLITE_ERROR; - }else{ - switch( iOpt ){ - case 0: /* MATCHINFO */ - if( strlen(zVal)!=4 || sqlite3_strnicmp(zVal, "fts3", 4) ){ - *pzErr = sqlite3_mprintf("unrecognized matchinfo: %s", zVal); - rc = SQLITE_ERROR; - } - bNoDocsize = 1; - break; - - case 1: /* PREFIX */ - sqlite3_free(zPrefix); - zPrefix = zVal; - zVal = 0; - break; - - case 2: /* COMPRESS */ - sqlite3_free(zCompress); - zCompress = zVal; - zVal = 0; - break; - - case 3: /* UNCOMPRESS */ - sqlite3_free(zUncompress); - zUncompress = zVal; - zVal = 0; - break; - - case 4: /* ORDER */ - if( (strlen(zVal)!=3 || sqlite3_strnicmp(zVal, "asc", 3)) - && (strlen(zVal)!=4 || sqlite3_strnicmp(zVal, "desc", 4)) - ){ - *pzErr = sqlite3_mprintf("unrecognized order: %s", zVal); - rc = SQLITE_ERROR; - } - bDescIdx = (zVal[0]=='d' || zVal[0]=='D'); - break; - - default: /* CONTENT */ - assert( iOpt==5 ); - sqlite3_free(zUncompress); - zContent = zVal; - zVal = 0; - break; - } - } - sqlite3_free(zVal); - } - } - - /* Otherwise, the argument is a column name. */ - else { - nString += (int)(strlen(z) + 1); - aCol[nCol++] = z; - } - } - - /* If a content=xxx option was specified, the following: - ** - ** 1. Ignore any compress= and uncompress= options. - ** - ** 2. If no column names were specified as part of the CREATE VIRTUAL - ** TABLE statement, use all columns from the content table. - */ - if( rc==SQLITE_OK && zContent ){ - sqlite3_free(zCompress); - sqlite3_free(zUncompress); - zCompress = 0; - zUncompress = 0; - if( nCol==0 ){ - sqlite3_free((void*)aCol); - aCol = 0; - rc = fts3ContentColumns(db, argv[1], zContent, &aCol, &nCol, &nString); - } - assert( rc!=SQLITE_OK || nCol>0 ); - } - if( rc!=SQLITE_OK ) goto fts3_init_out; - - if( nCol==0 ){ - assert( nString==0 ); - aCol[0] = "content"; - nString = 8; - nCol = 1; - } - - if( pTokenizer==0 ){ - rc = sqlite3Fts3InitTokenizer(pHash, "simple", &pTokenizer, pzErr); - if( rc!=SQLITE_OK ) goto fts3_init_out; - } - assert( pTokenizer ); - - rc = fts3PrefixParameter(zPrefix, &nIndex, &aIndex); - if( rc==SQLITE_ERROR ){ - assert( zPrefix ); - *pzErr = sqlite3_mprintf("error parsing prefix parameter: %s", zPrefix); - } - if( rc!=SQLITE_OK ) goto fts3_init_out; - - /* Allocate and populate the Fts3Table structure. */ - nByte = sizeof(Fts3Table) + /* Fts3Table */ - nCol * sizeof(char *) + /* azColumn */ - nIndex * sizeof(struct Fts3Index) + /* aIndex */ - nName + /* zName */ - nDb + /* zDb */ - nString; /* Space for azColumn strings */ - p = (Fts3Table*)sqlite3_malloc(nByte); - if( p==0 ){ - rc = SQLITE_NOMEM; - goto fts3_init_out; - } - memset(p, 0, nByte); - p->db = db; - p->nColumn = nCol; - p->nPendingData = 0; - p->azColumn = (char **)&p[1]; - p->pTokenizer = pTokenizer; - p->nMaxPendingData = FTS3_MAX_PENDING_DATA; - p->bHasDocsize = (isFts4 && bNoDocsize==0); - p->bHasStat = isFts4; - p->bDescIdx = bDescIdx; - p->zContentTbl = zContent; - zContent = 0; - TESTONLY( p->inTransaction = -1 ); - TESTONLY( p->mxSavepoint = -1 ); - - p->aIndex = (struct Fts3Index *)&p->azColumn[nCol]; - memcpy(p->aIndex, aIndex, sizeof(struct Fts3Index) * nIndex); - p->nIndex = nIndex; - for(i=0; iaIndex[i].hPending, FTS3_HASH_STRING, 1); - } - - /* Fill in the zName and zDb fields of the vtab structure. */ - zCsr = (char *)&p->aIndex[nIndex]; - p->zName = zCsr; - memcpy(zCsr, argv[2], nName); - zCsr += nName; - p->zDb = zCsr; - memcpy(zCsr, argv[1], nDb); - zCsr += nDb; - - /* Fill in the azColumn array */ - for(iCol=0; iColazColumn[iCol] = zCsr; - zCsr += n+1; - assert( zCsr <= &((char *)p)[nByte] ); - } - - if( (zCompress==0)!=(zUncompress==0) ){ - char const *zMiss = (zCompress==0 ? "compress" : "uncompress"); - rc = SQLITE_ERROR; - *pzErr = sqlite3_mprintf("missing %s parameter in fts4 constructor", zMiss); - } - p->zReadExprlist = fts3ReadExprList(p, zUncompress, &rc); - p->zWriteExprlist = fts3WriteExprList(p, zCompress, &rc); - if( rc!=SQLITE_OK ) goto fts3_init_out; - - /* If this is an xCreate call, create the underlying tables in the - ** database. TODO: For xConnect(), it could verify that said tables exist. - */ - if( isCreate ){ - rc = fts3CreateTables(p); - } - - /* Figure out the page-size for the database. This is required in order to - ** estimate the cost of loading large doclists from the database. */ - fts3DatabasePageSize(&rc, p); - p->nNodeSize = p->nPgsz-35; - - /* Declare the table schema to SQLite. */ - fts3DeclareVtab(&rc, p); - -fts3_init_out: - sqlite3_free(zPrefix); - sqlite3_free(aIndex); - sqlite3_free(zCompress); - sqlite3_free(zUncompress); - sqlite3_free(zContent); - sqlite3_free((void *)aCol); - if( rc!=SQLITE_OK ){ - if( p ){ - fts3DisconnectMethod((sqlite3_vtab *)p); - }else if( pTokenizer ){ - pTokenizer->pModule->xDestroy(pTokenizer); - } - }else{ - assert( p->pSegments==0 ); - *ppVTab = &p->base; - } - return rc; -} - -/* -** The xConnect() and xCreate() methods for the virtual table. All the -** work is done in function fts3InitVtab(). -*/ -static int fts3ConnectMethod( - sqlite3 *db, /* Database connection */ - void *pAux, /* Pointer to tokenizer hash table */ - int argc, /* Number of elements in argv array */ - const char * const *argv, /* xCreate/xConnect argument array */ - sqlite3_vtab **ppVtab, /* OUT: New sqlite3_vtab object */ - char **pzErr /* OUT: sqlite3_malloc'd error message */ -){ - return fts3InitVtab(0, db, pAux, argc, argv, ppVtab, pzErr); -} -static int fts3CreateMethod( - sqlite3 *db, /* Database connection */ - void *pAux, /* Pointer to tokenizer hash table */ - int argc, /* Number of elements in argv array */ - const char * const *argv, /* xCreate/xConnect argument array */ - sqlite3_vtab **ppVtab, /* OUT: New sqlite3_vtab object */ - char **pzErr /* OUT: sqlite3_malloc'd error message */ -){ - return fts3InitVtab(1, db, pAux, argc, argv, ppVtab, pzErr); -} - -/* -** Implementation of the xBestIndex method for FTS3 tables. There -** are three possible strategies, in order of preference: -** -** 1. Direct lookup by rowid or docid. -** 2. Full-text search using a MATCH operator on a non-docid column. -** 3. Linear scan of %_content table. -*/ -static int fts3BestIndexMethod(sqlite3_vtab *pVTab, sqlite3_index_info *pInfo){ - Fts3Table *p = (Fts3Table *)pVTab; - int i; /* Iterator variable */ - int iCons = -1; /* Index of constraint to use */ - - /* By default use a full table scan. This is an expensive option, - ** so search through the constraints to see if a more efficient - ** strategy is possible. - */ - pInfo->idxNum = FTS3_FULLSCAN_SEARCH; - pInfo->estimatedCost = 500000; - for(i=0; inConstraint; i++){ - struct sqlite3_index_constraint *pCons = &pInfo->aConstraint[i]; - if( pCons->usable==0 ) continue; - - /* A direct lookup on the rowid or docid column. Assign a cost of 1.0. */ - if( pCons->op==SQLITE_INDEX_CONSTRAINT_EQ - && (pCons->iColumn<0 || pCons->iColumn==p->nColumn+1 ) - ){ - pInfo->idxNum = FTS3_DOCID_SEARCH; - pInfo->estimatedCost = 1.0; - iCons = i; - } - - /* A MATCH constraint. Use a full-text search. - ** - ** If there is more than one MATCH constraint available, use the first - ** one encountered. If there is both a MATCH constraint and a direct - ** rowid/docid lookup, prefer the MATCH strategy. This is done even - ** though the rowid/docid lookup is faster than a MATCH query, selecting - ** it would lead to an "unable to use function MATCH in the requested - ** context" error. - */ - if( pCons->op==SQLITE_INDEX_CONSTRAINT_MATCH - && pCons->iColumn>=0 && pCons->iColumn<=p->nColumn - ){ - pInfo->idxNum = FTS3_FULLTEXT_SEARCH + pCons->iColumn; - pInfo->estimatedCost = 2.0; - iCons = i; - break; - } - } - - if( iCons>=0 ){ - pInfo->aConstraintUsage[iCons].argvIndex = 1; - pInfo->aConstraintUsage[iCons].omit = 1; - } - - /* Regardless of the strategy selected, FTS can deliver rows in rowid (or - ** docid) order. Both ascending and descending are possible. - */ - if( pInfo->nOrderBy==1 ){ - struct sqlite3_index_orderby *pOrder = &pInfo->aOrderBy[0]; - if( pOrder->iColumn<0 || pOrder->iColumn==p->nColumn+1 ){ - if( pOrder->desc ){ - pInfo->idxStr = "DESC"; - }else{ - pInfo->idxStr = "ASC"; - } - pInfo->orderByConsumed = 1; - } - } - - assert( p->pSegments==0 ); - return SQLITE_OK; -} - -/* -** Implementation of xOpen method. -*/ -static int fts3OpenMethod(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCsr){ - sqlite3_vtab_cursor *pCsr; /* Allocated cursor */ - - UNUSED_PARAMETER(pVTab); - - /* Allocate a buffer large enough for an Fts3Cursor structure. If the - ** allocation succeeds, zero it and return SQLITE_OK. Otherwise, - ** if the allocation fails, return SQLITE_NOMEM. - */ - *ppCsr = pCsr = (sqlite3_vtab_cursor *)sqlite3_malloc(sizeof(Fts3Cursor)); - if( !pCsr ){ - return SQLITE_NOMEM; - } - memset(pCsr, 0, sizeof(Fts3Cursor)); - return SQLITE_OK; -} - -/* -** Close the cursor. For additional information see the documentation -** on the xClose method of the virtual table interface. -*/ -static int fts3CloseMethod(sqlite3_vtab_cursor *pCursor){ - Fts3Cursor *pCsr = (Fts3Cursor *)pCursor; - assert( ((Fts3Table *)pCsr->base.pVtab)->pSegments==0 ); - sqlite3_finalize(pCsr->pStmt); - sqlite3Fts3ExprFree(pCsr->pExpr); - sqlite3Fts3FreeDeferredTokens(pCsr); - sqlite3_free(pCsr->aDoclist); - sqlite3_free(pCsr->aMatchinfo); - assert( ((Fts3Table *)pCsr->base.pVtab)->pSegments==0 ); - sqlite3_free(pCsr); - return SQLITE_OK; -} - -/* -** If pCsr->pStmt has not been prepared (i.e. if pCsr->pStmt==0), then -** compose and prepare an SQL statement of the form: -** -** "SELECT FROM %_content WHERE rowid = ?" -** -** (or the equivalent for a content=xxx table) and set pCsr->pStmt to -** it. If an error occurs, return an SQLite error code. -** -** Otherwise, set *ppStmt to point to pCsr->pStmt and return SQLITE_OK. -*/ -static int fts3CursorSeekStmt(Fts3Cursor *pCsr, sqlite3_stmt **ppStmt){ - int rc = SQLITE_OK; - if( pCsr->pStmt==0 ){ - Fts3Table *p = (Fts3Table *)pCsr->base.pVtab; - char *zSql; - zSql = sqlite3_mprintf("SELECT %s WHERE rowid = ?", p->zReadExprlist); - if( !zSql ) return SQLITE_NOMEM; - rc = sqlite3_prepare_v2(p->db, zSql, -1, &pCsr->pStmt, 0); - sqlite3_free(zSql); - } - *ppStmt = pCsr->pStmt; - return rc; -} - -/* -** Position the pCsr->pStmt statement so that it is on the row -** of the %_content table that contains the last match. Return -** SQLITE_OK on success. -*/ -static int fts3CursorSeek(sqlite3_context *pContext, Fts3Cursor *pCsr){ - int rc = SQLITE_OK; - if( pCsr->isRequireSeek ){ - sqlite3_stmt *pStmt = 0; - - rc = fts3CursorSeekStmt(pCsr, &pStmt); - if( rc==SQLITE_OK ){ - sqlite3_bind_int64(pCsr->pStmt, 1, pCsr->iPrevId); - pCsr->isRequireSeek = 0; - if( SQLITE_ROW==sqlite3_step(pCsr->pStmt) ){ - return SQLITE_OK; - }else{ - rc = sqlite3_reset(pCsr->pStmt); - if( rc==SQLITE_OK && ((Fts3Table *)pCsr->base.pVtab)->zContentTbl==0 ){ - /* If no row was found and no error has occured, then the %_content - ** table is missing a row that is present in the full-text index. - ** The data structures are corrupt. */ - rc = FTS_CORRUPT_VTAB; - pCsr->isEof = 1; - } - } - } - } - - if( rc!=SQLITE_OK && pContext ){ - sqlite3_result_error_code(pContext, rc); - } - return rc; -} - -/* -** This function is used to process a single interior node when searching -** a b-tree for a term or term prefix. The node data is passed to this -** function via the zNode/nNode parameters. The term to search for is -** passed in zTerm/nTerm. -** -** If piFirst is not NULL, then this function sets *piFirst to the blockid -** of the child node that heads the sub-tree that may contain the term. -** -** If piLast is not NULL, then *piLast is set to the right-most child node -** that heads a sub-tree that may contain a term for which zTerm/nTerm is -** a prefix. -** -** If an OOM error occurs, SQLITE_NOMEM is returned. Otherwise, SQLITE_OK. -*/ -static int fts3ScanInteriorNode( - const char *zTerm, /* Term to select leaves for */ - int nTerm, /* Size of term zTerm in bytes */ - const char *zNode, /* Buffer containing segment interior node */ - int nNode, /* Size of buffer at zNode */ - sqlite3_int64 *piFirst, /* OUT: Selected child node */ - sqlite3_int64 *piLast /* OUT: Selected child node */ -){ - int rc = SQLITE_OK; /* Return code */ - const char *zCsr = zNode; /* Cursor to iterate through node */ - const char *zEnd = &zCsr[nNode];/* End of interior node buffer */ - char *zBuffer = 0; /* Buffer to load terms into */ - int nAlloc = 0; /* Size of allocated buffer */ - int isFirstTerm = 1; /* True when processing first term on page */ - sqlite3_int64 iChild; /* Block id of child node to descend to */ - - /* Skip over the 'height' varint that occurs at the start of every - ** interior node. Then load the blockid of the left-child of the b-tree - ** node into variable iChild. - ** - ** Even if the data structure on disk is corrupted, this (reading two - ** varints from the buffer) does not risk an overread. If zNode is a - ** root node, then the buffer comes from a SELECT statement. SQLite does - ** not make this guarantee explicitly, but in practice there are always - ** either more than 20 bytes of allocated space following the nNode bytes of - ** contents, or two zero bytes. Or, if the node is read from the %_segments - ** table, then there are always 20 bytes of zeroed padding following the - ** nNode bytes of content (see sqlite3Fts3ReadBlock() for details). - */ - zCsr += sqlite3Fts3GetVarint(zCsr, &iChild); - zCsr += sqlite3Fts3GetVarint(zCsr, &iChild); - if( zCsr>zEnd ){ - return FTS_CORRUPT_VTAB; - } - - while( zCsrzEnd ){ - rc = FTS_CORRUPT_VTAB; - goto finish_scan; - } - if( nPrefix+nSuffix>nAlloc ){ - char *zNew; - nAlloc = (nPrefix+nSuffix) * 2; - zNew = (char *)sqlite3_realloc(zBuffer, nAlloc); - if( !zNew ){ - rc = SQLITE_NOMEM; - goto finish_scan; - } - zBuffer = zNew; - } - assert( zBuffer ); - memcpy(&zBuffer[nPrefix], zCsr, nSuffix); - nBuffer = nPrefix + nSuffix; - zCsr += nSuffix; - - /* Compare the term we are searching for with the term just loaded from - ** the interior node. If the specified term is greater than or equal - ** to the term from the interior node, then all terms on the sub-tree - ** headed by node iChild are smaller than zTerm. No need to search - ** iChild. - ** - ** If the interior node term is larger than the specified term, then - ** the tree headed by iChild may contain the specified term. - */ - cmp = memcmp(zTerm, zBuffer, (nBuffer>nTerm ? nTerm : nBuffer)); - if( piFirst && (cmp<0 || (cmp==0 && nBuffer>nTerm)) ){ - *piFirst = iChild; - piFirst = 0; - } - - if( piLast && cmp<0 ){ - *piLast = iChild; - piLast = 0; - } - - iChild++; - }; - - if( piFirst ) *piFirst = iChild; - if( piLast ) *piLast = iChild; - - finish_scan: - sqlite3_free(zBuffer); - return rc; -} - - -/* -** The buffer pointed to by argument zNode (size nNode bytes) contains an -** interior node of a b-tree segment. The zTerm buffer (size nTerm bytes) -** contains a term. This function searches the sub-tree headed by the zNode -** node for the range of leaf nodes that may contain the specified term -** or terms for which the specified term is a prefix. -** -** If piLeaf is not NULL, then *piLeaf is set to the blockid of the -** left-most leaf node in the tree that may contain the specified term. -** If piLeaf2 is not NULL, then *piLeaf2 is set to the blockid of the -** right-most leaf node that may contain a term for which the specified -** term is a prefix. -** -** It is possible that the range of returned leaf nodes does not contain -** the specified term or any terms for which it is a prefix. However, if the -** segment does contain any such terms, they are stored within the identified -** range. Because this function only inspects interior segment nodes (and -** never loads leaf nodes into memory), it is not possible to be sure. -** -** If an error occurs, an error code other than SQLITE_OK is returned. -*/ -static int fts3SelectLeaf( - Fts3Table *p, /* Virtual table handle */ - const char *zTerm, /* Term to select leaves for */ - int nTerm, /* Size of term zTerm in bytes */ - const char *zNode, /* Buffer containing segment interior node */ - int nNode, /* Size of buffer at zNode */ - sqlite3_int64 *piLeaf, /* Selected leaf node */ - sqlite3_int64 *piLeaf2 /* Selected leaf node */ -){ - int rc; /* Return code */ - int iHeight; /* Height of this node in tree */ - - assert( piLeaf || piLeaf2 ); - - sqlite3Fts3GetVarint32(zNode, &iHeight); - rc = fts3ScanInteriorNode(zTerm, nTerm, zNode, nNode, piLeaf, piLeaf2); - assert( !piLeaf2 || !piLeaf || rc!=SQLITE_OK || (*piLeaf<=*piLeaf2) ); - - if( rc==SQLITE_OK && iHeight>1 ){ - char *zBlob = 0; /* Blob read from %_segments table */ - int nBlob; /* Size of zBlob in bytes */ - - if( piLeaf && piLeaf2 && (*piLeaf!=*piLeaf2) ){ - rc = sqlite3Fts3ReadBlock(p, *piLeaf, &zBlob, &nBlob, 0); - if( rc==SQLITE_OK ){ - rc = fts3SelectLeaf(p, zTerm, nTerm, zBlob, nBlob, piLeaf, 0); - } - sqlite3_free(zBlob); - piLeaf = 0; - zBlob = 0; - } - - if( rc==SQLITE_OK ){ - rc = sqlite3Fts3ReadBlock(p, piLeaf?*piLeaf:*piLeaf2, &zBlob, &nBlob, 0); - } - if( rc==SQLITE_OK ){ - rc = fts3SelectLeaf(p, zTerm, nTerm, zBlob, nBlob, piLeaf, piLeaf2); - } - sqlite3_free(zBlob); - } - - return rc; -} - -/* -** This function is used to create delta-encoded serialized lists of FTS3 -** varints. Each call to this function appends a single varint to a list. -*/ -static void fts3PutDeltaVarint( - char **pp, /* IN/OUT: Output pointer */ - sqlite3_int64 *piPrev, /* IN/OUT: Previous value written to list */ - sqlite3_int64 iVal /* Write this value to the list */ -){ - assert( iVal-*piPrev > 0 || (*piPrev==0 && iVal==0) ); - *pp += sqlite3Fts3PutVarint(*pp, iVal-*piPrev); - *piPrev = iVal; -} - -/* -** When this function is called, *ppPoslist is assumed to point to the -** start of a position-list. After it returns, *ppPoslist points to the -** first byte after the position-list. -** -** A position list is list of positions (delta encoded) and columns for -** a single document record of a doclist. So, in other words, this -** routine advances *ppPoslist so that it points to the next docid in -** the doclist, or to the first byte past the end of the doclist. -** -** If pp is not NULL, then the contents of the position list are copied -** to *pp. *pp is set to point to the first byte past the last byte copied -** before this function returns. -*/ -static void fts3PoslistCopy(char **pp, char **ppPoslist){ - char *pEnd = *ppPoslist; - char c = 0; - - /* The end of a position list is marked by a zero encoded as an FTS3 - ** varint. A single POS_END (0) byte. Except, if the 0 byte is preceded by - ** a byte with the 0x80 bit set, then it is not a varint 0, but the tail - ** of some other, multi-byte, value. - ** - ** The following while-loop moves pEnd to point to the first byte that is not - ** immediately preceded by a byte with the 0x80 bit set. Then increments - ** pEnd once more so that it points to the byte immediately following the - ** last byte in the position-list. - */ - while( *pEnd | c ){ - c = *pEnd++ & 0x80; - testcase( c!=0 && (*pEnd)==0 ); - } - pEnd++; /* Advance past the POS_END terminator byte */ - - if( pp ){ - int n = (int)(pEnd - *ppPoslist); - char *p = *pp; - memcpy(p, *ppPoslist, n); - p += n; - *pp = p; - } - *ppPoslist = pEnd; -} - -/* -** When this function is called, *ppPoslist is assumed to point to the -** start of a column-list. After it returns, *ppPoslist points to the -** to the terminator (POS_COLUMN or POS_END) byte of the column-list. -** -** A column-list is list of delta-encoded positions for a single column -** within a single document within a doclist. -** -** The column-list is terminated either by a POS_COLUMN varint (1) or -** a POS_END varint (0). This routine leaves *ppPoslist pointing to -** the POS_COLUMN or POS_END that terminates the column-list. -** -** If pp is not NULL, then the contents of the column-list are copied -** to *pp. *pp is set to point to the first byte past the last byte copied -** before this function returns. The POS_COLUMN or POS_END terminator -** is not copied into *pp. -*/ -static void fts3ColumnlistCopy(char **pp, char **ppPoslist){ - char *pEnd = *ppPoslist; - char c = 0; - - /* A column-list is terminated by either a 0x01 or 0x00 byte that is - ** not part of a multi-byte varint. - */ - while( 0xFE & (*pEnd | c) ){ - c = *pEnd++ & 0x80; - testcase( c!=0 && ((*pEnd)&0xfe)==0 ); - } - if( pp ){ - int n = (int)(pEnd - *ppPoslist); - char *p = *pp; - memcpy(p, *ppPoslist, n); - p += n; - *pp = p; - } - *ppPoslist = pEnd; -} - -/* -** Value used to signify the end of an position-list. This is safe because -** it is not possible to have a document with 2^31 terms. -*/ -#define POSITION_LIST_END 0x7fffffff - -/* -** This function is used to help parse position-lists. When this function is -** called, *pp may point to the start of the next varint in the position-list -** being parsed, or it may point to 1 byte past the end of the position-list -** (in which case **pp will be a terminator bytes POS_END (0) or -** (1)). -** -** If *pp points past the end of the current position-list, set *pi to -** POSITION_LIST_END and return. Otherwise, read the next varint from *pp, -** increment the current value of *pi by the value read, and set *pp to -** point to the next value before returning. -** -** Before calling this routine *pi must be initialized to the value of -** the previous position, or zero if we are reading the first position -** in the position-list. Because positions are delta-encoded, the value -** of the previous position is needed in order to compute the value of -** the next position. -*/ -static void fts3ReadNextPos( - char **pp, /* IN/OUT: Pointer into position-list buffer */ - sqlite3_int64 *pi /* IN/OUT: Value read from position-list */ -){ - if( (**pp)&0xFE ){ - fts3GetDeltaVarint(pp, pi); - *pi -= 2; - }else{ - *pi = POSITION_LIST_END; - } -} - -/* -** If parameter iCol is not 0, write an POS_COLUMN (1) byte followed by -** the value of iCol encoded as a varint to *pp. This will start a new -** column list. -** -** Set *pp to point to the byte just after the last byte written before -** returning (do not modify it if iCol==0). Return the total number of bytes -** written (0 if iCol==0). -*/ -static int fts3PutColNumber(char **pp, int iCol){ - int n = 0; /* Number of bytes written */ - if( iCol ){ - char *p = *pp; /* Output pointer */ - n = 1 + sqlite3Fts3PutVarint(&p[1], iCol); - *p = 0x01; - *pp = &p[n]; - } - return n; -} - -/* -** Compute the union of two position lists. The output written -** into *pp contains all positions of both *pp1 and *pp2 in sorted -** order and with any duplicates removed. All pointers are -** updated appropriately. The caller is responsible for insuring -** that there is enough space in *pp to hold the complete output. -*/ -static void fts3PoslistMerge( - char **pp, /* Output buffer */ - char **pp1, /* Left input list */ - char **pp2 /* Right input list */ -){ - char *p = *pp; - char *p1 = *pp1; - char *p2 = *pp2; - - while( *p1 || *p2 ){ - int iCol1; /* The current column index in pp1 */ - int iCol2; /* The current column index in pp2 */ - - if( *p1==POS_COLUMN ) sqlite3Fts3GetVarint32(&p1[1], &iCol1); - else if( *p1==POS_END ) iCol1 = POSITION_LIST_END; - else iCol1 = 0; - - if( *p2==POS_COLUMN ) sqlite3Fts3GetVarint32(&p2[1], &iCol2); - else if( *p2==POS_END ) iCol2 = POSITION_LIST_END; - else iCol2 = 0; - - if( iCol1==iCol2 ){ - sqlite3_int64 i1 = 0; /* Last position from pp1 */ - sqlite3_int64 i2 = 0; /* Last position from pp2 */ - sqlite3_int64 iPrev = 0; - int n = fts3PutColNumber(&p, iCol1); - p1 += n; - p2 += n; - - /* At this point, both p1 and p2 point to the start of column-lists - ** for the same column (the column with index iCol1 and iCol2). - ** A column-list is a list of non-negative delta-encoded varints, each - ** incremented by 2 before being stored. Each list is terminated by a - ** POS_END (0) or POS_COLUMN (1). The following block merges the two lists - ** and writes the results to buffer p. p is left pointing to the byte - ** after the list written. No terminator (POS_END or POS_COLUMN) is - ** written to the output. - */ - fts3GetDeltaVarint(&p1, &i1); - fts3GetDeltaVarint(&p2, &i2); - do { - fts3PutDeltaVarint(&p, &iPrev, (i1pos(*pp1) && pos(*pp2)-pos(*pp1)<=nToken). i.e. -** when the *pp1 token appears before the *pp2 token, but not more than nToken -** slots before it. -** -** e.g. nToken==1 searches for adjacent positions. -*/ -static int fts3PoslistPhraseMerge( - char **pp, /* IN/OUT: Preallocated output buffer */ - int nToken, /* Maximum difference in token positions */ - int isSaveLeft, /* Save the left position */ - int isExact, /* If *pp1 is exactly nTokens before *pp2 */ - char **pp1, /* IN/OUT: Left input list */ - char **pp2 /* IN/OUT: Right input list */ -){ - char *p = *pp; - char *p1 = *pp1; - char *p2 = *pp2; - int iCol1 = 0; - int iCol2 = 0; - - /* Never set both isSaveLeft and isExact for the same invocation. */ - assert( isSaveLeft==0 || isExact==0 ); - - assert( p!=0 && *p1!=0 && *p2!=0 ); - if( *p1==POS_COLUMN ){ - p1++; - p1 += sqlite3Fts3GetVarint32(p1, &iCol1); - } - if( *p2==POS_COLUMN ){ - p2++; - p2 += sqlite3Fts3GetVarint32(p2, &iCol2); - } - - while( 1 ){ - if( iCol1==iCol2 ){ - char *pSave = p; - sqlite3_int64 iPrev = 0; - sqlite3_int64 iPos1 = 0; - sqlite3_int64 iPos2 = 0; - - if( iCol1 ){ - *p++ = POS_COLUMN; - p += sqlite3Fts3PutVarint(p, iCol1); - } - - assert( *p1!=POS_END && *p1!=POS_COLUMN ); - assert( *p2!=POS_END && *p2!=POS_COLUMN ); - fts3GetDeltaVarint(&p1, &iPos1); iPos1 -= 2; - fts3GetDeltaVarint(&p2, &iPos2); iPos2 -= 2; - - while( 1 ){ - if( iPos2==iPos1+nToken - || (isExact==0 && iPos2>iPos1 && iPos2<=iPos1+nToken) - ){ - sqlite3_int64 iSave; - iSave = isSaveLeft ? iPos1 : iPos2; - fts3PutDeltaVarint(&p, &iPrev, iSave+2); iPrev -= 2; - pSave = 0; - assert( p ); - } - if( (!isSaveLeft && iPos2<=(iPos1+nToken)) || iPos2<=iPos1 ){ - if( (*p2&0xFE)==0 ) break; - fts3GetDeltaVarint(&p2, &iPos2); iPos2 -= 2; - }else{ - if( (*p1&0xFE)==0 ) break; - fts3GetDeltaVarint(&p1, &iPos1); iPos1 -= 2; - } - } - - if( pSave ){ - assert( pp && p ); - p = pSave; - } - - fts3ColumnlistCopy(0, &p1); - fts3ColumnlistCopy(0, &p2); - assert( (*p1&0xFE)==0 && (*p2&0xFE)==0 ); - if( 0==*p1 || 0==*p2 ) break; - - p1++; - p1 += sqlite3Fts3GetVarint32(p1, &iCol1); - p2++; - p2 += sqlite3Fts3GetVarint32(p2, &iCol2); - } - - /* Advance pointer p1 or p2 (whichever corresponds to the smaller of - ** iCol1 and iCol2) so that it points to either the 0x00 that marks the - ** end of the position list, or the 0x01 that precedes the next - ** column-number in the position list. - */ - else if( iCol1=pEnd ){ - *pp = 0; - }else{ - sqlite3_int64 iVal; - *pp += sqlite3Fts3GetVarint(*pp, &iVal); - if( bDescIdx ){ - *pVal -= iVal; - }else{ - *pVal += iVal; - } - } -} - -/* -** This function is used to write a single varint to a buffer. The varint -** is written to *pp. Before returning, *pp is set to point 1 byte past the -** end of the value written. -** -** If *pbFirst is zero when this function is called, the value written to -** the buffer is that of parameter iVal. -** -** If *pbFirst is non-zero when this function is called, then the value -** written is either (iVal-*piPrev) (if bDescIdx is zero) or (*piPrev-iVal) -** (if bDescIdx is non-zero). -** -** Before returning, this function always sets *pbFirst to 1 and *piPrev -** to the value of parameter iVal. -*/ -static void fts3PutDeltaVarint3( - char **pp, /* IN/OUT: Output pointer */ - int bDescIdx, /* True for descending docids */ - sqlite3_int64 *piPrev, /* IN/OUT: Previous value written to list */ - int *pbFirst, /* IN/OUT: True after first int written */ - sqlite3_int64 iVal /* Write this value to the list */ -){ - sqlite3_int64 iWrite; - if( bDescIdx==0 || *pbFirst==0 ){ - iWrite = iVal - *piPrev; - }else{ - iWrite = *piPrev - iVal; - } - assert( *pbFirst || *piPrev==0 ); - assert( *pbFirst==0 || iWrite>0 ); - *pp += sqlite3Fts3PutVarint(*pp, iWrite); - *piPrev = iVal; - *pbFirst = 1; -} - - -/* -** This macro is used by various functions that merge doclists. The two -** arguments are 64-bit docid values. If the value of the stack variable -** bDescDoclist is 0 when this macro is invoked, then it returns (i1-i2). -** Otherwise, (i2-i1). -** -** Using this makes it easier to write code that can merge doclists that are -** sorted in either ascending or descending order. -*/ -#define DOCID_CMP(i1, i2) ((bDescDoclist?-1:1) * (i1-i2)) - -/* -** This function does an "OR" merge of two doclists (output contains all -** positions contained in either argument doclist). If the docids in the -** input doclists are sorted in ascending order, parameter bDescDoclist -** should be false. If they are sorted in ascending order, it should be -** passed a non-zero value. -** -** If no error occurs, *paOut is set to point at an sqlite3_malloc'd buffer -** containing the output doclist and SQLITE_OK is returned. In this case -** *pnOut is set to the number of bytes in the output doclist. -** -** If an error occurs, an SQLite error code is returned. The output values -** are undefined in this case. -*/ -static int fts3DoclistOrMerge( - int bDescDoclist, /* True if arguments are desc */ - char *a1, int n1, /* First doclist */ - char *a2, int n2, /* Second doclist */ - char **paOut, int *pnOut /* OUT: Malloc'd doclist */ -){ - sqlite3_int64 i1 = 0; - sqlite3_int64 i2 = 0; - sqlite3_int64 iPrev = 0; - char *pEnd1 = &a1[n1]; - char *pEnd2 = &a2[n2]; - char *p1 = a1; - char *p2 = a2; - char *p; - char *aOut; - int bFirstOut = 0; - - *paOut = 0; - *pnOut = 0; - - /* Allocate space for the output. Both the input and output doclists - ** are delta encoded. If they are in ascending order (bDescDoclist==0), - ** then the first docid in each list is simply encoded as a varint. For - ** each subsequent docid, the varint stored is the difference between the - ** current and previous docid (a positive number - since the list is in - ** ascending order). - ** - ** The first docid written to the output is therefore encoded using the - ** same number of bytes as it is in whichever of the input lists it is - ** read from. And each subsequent docid read from the same input list - ** consumes either the same or less bytes as it did in the input (since - ** the difference between it and the previous value in the output must - ** be a positive value less than or equal to the delta value read from - ** the input list). The same argument applies to all but the first docid - ** read from the 'other' list. And to the contents of all position lists - ** that will be copied and merged from the input to the output. - ** - ** However, if the first docid copied to the output is a negative number, - ** then the encoding of the first docid from the 'other' input list may - ** be larger in the output than it was in the input (since the delta value - ** may be a larger positive integer than the actual docid). - ** - ** The space required to store the output is therefore the sum of the - ** sizes of the two inputs, plus enough space for exactly one of the input - ** docids to grow. - ** - ** A symetric argument may be made if the doclists are in descending - ** order. - */ - aOut = sqlite3_malloc(n1+n2+FTS3_VARINT_MAX-1); - if( !aOut ) return SQLITE_NOMEM; - - p = aOut; - fts3GetDeltaVarint3(&p1, pEnd1, 0, &i1); - fts3GetDeltaVarint3(&p2, pEnd2, 0, &i2); - while( p1 || p2 ){ - sqlite3_int64 iDiff = DOCID_CMP(i1, i2); - - if( p2 && p1 && iDiff==0 ){ - fts3PutDeltaVarint3(&p, bDescDoclist, &iPrev, &bFirstOut, i1); - fts3PoslistMerge(&p, &p1, &p2); - fts3GetDeltaVarint3(&p1, pEnd1, bDescDoclist, &i1); - fts3GetDeltaVarint3(&p2, pEnd2, bDescDoclist, &i2); - }else if( !p2 || (p1 && iDiff<0) ){ - fts3PutDeltaVarint3(&p, bDescDoclist, &iPrev, &bFirstOut, i1); - fts3PoslistCopy(&p, &p1); - fts3GetDeltaVarint3(&p1, pEnd1, bDescDoclist, &i1); - }else{ - fts3PutDeltaVarint3(&p, bDescDoclist, &iPrev, &bFirstOut, i2); - fts3PoslistCopy(&p, &p2); - fts3GetDeltaVarint3(&p2, pEnd2, bDescDoclist, &i2); - } - } - - *paOut = aOut; - *pnOut = (p-aOut); - assert( *pnOut<=n1+n2+FTS3_VARINT_MAX-1 ); - return SQLITE_OK; -} - -/* -** This function does a "phrase" merge of two doclists. In a phrase merge, -** the output contains a copy of each position from the right-hand input -** doclist for which there is a position in the left-hand input doclist -** exactly nDist tokens before it. -** -** If the docids in the input doclists are sorted in ascending order, -** parameter bDescDoclist should be false. If they are sorted in ascending -** order, it should be passed a non-zero value. -** -** The right-hand input doclist is overwritten by this function. -*/ -static void fts3DoclistPhraseMerge( - int bDescDoclist, /* True if arguments are desc */ - int nDist, /* Distance from left to right (1=adjacent) */ - char *aLeft, int nLeft, /* Left doclist */ - char *aRight, int *pnRight /* IN/OUT: Right/output doclist */ -){ - sqlite3_int64 i1 = 0; - sqlite3_int64 i2 = 0; - sqlite3_int64 iPrev = 0; - char *pEnd1 = &aLeft[nLeft]; - char *pEnd2 = &aRight[*pnRight]; - char *p1 = aLeft; - char *p2 = aRight; - char *p; - int bFirstOut = 0; - char *aOut = aRight; - - assert( nDist>0 ); - - p = aOut; - fts3GetDeltaVarint3(&p1, pEnd1, 0, &i1); - fts3GetDeltaVarint3(&p2, pEnd2, 0, &i2); - - while( p1 && p2 ){ - sqlite3_int64 iDiff = DOCID_CMP(i1, i2); - if( iDiff==0 ){ - char *pSave = p; - sqlite3_int64 iPrevSave = iPrev; - int bFirstOutSave = bFirstOut; - - fts3PutDeltaVarint3(&p, bDescDoclist, &iPrev, &bFirstOut, i1); - if( 0==fts3PoslistPhraseMerge(&p, nDist, 0, 1, &p1, &p2) ){ - p = pSave; - iPrev = iPrevSave; - bFirstOut = bFirstOutSave; - } - fts3GetDeltaVarint3(&p1, pEnd1, bDescDoclist, &i1); - fts3GetDeltaVarint3(&p2, pEnd2, bDescDoclist, &i2); - }else if( iDiff<0 ){ - fts3PoslistCopy(0, &p1); - fts3GetDeltaVarint3(&p1, pEnd1, bDescDoclist, &i1); - }else{ - fts3PoslistCopy(0, &p2); - fts3GetDeltaVarint3(&p2, pEnd2, bDescDoclist, &i2); - } - } - - *pnRight = p - aOut; -} - -/* -** Argument pList points to a position list nList bytes in size. This -** function checks to see if the position list contains any entries for -** a token in position 0 (of any column). If so, it writes argument iDelta -** to the output buffer pOut, followed by a position list consisting only -** of the entries from pList at position 0, and terminated by an 0x00 byte. -** The value returned is the number of bytes written to pOut (if any). -*/ -int sqlite3Fts3FirstFilter( - sqlite3_int64 iDelta, /* Varint that may be written to pOut */ - char *pList, /* Position list (no 0x00 term) */ - int nList, /* Size of pList in bytes */ - char *pOut /* Write output here */ -){ - int nOut = 0; - int bWritten = 0; /* True once iDelta has been written */ - char *p = pList; - char *pEnd = &pList[nList]; - - if( *p!=0x01 ){ - if( *p==0x02 ){ - nOut += sqlite3Fts3PutVarint(&pOut[nOut], iDelta); - pOut[nOut++] = 0x02; - bWritten = 1; - } - fts3ColumnlistCopy(0, &p); - } - - while( paaOutput); i++){ - if( pTS->aaOutput[i] ){ - if( !aOut ){ - aOut = pTS->aaOutput[i]; - nOut = pTS->anOutput[i]; - pTS->aaOutput[i] = 0; - }else{ - int nNew; - char *aNew; - - int rc = fts3DoclistOrMerge(p->bDescIdx, - pTS->aaOutput[i], pTS->anOutput[i], aOut, nOut, &aNew, &nNew - ); - if( rc!=SQLITE_OK ){ - sqlite3_free(aOut); - return rc; - } - - sqlite3_free(pTS->aaOutput[i]); - sqlite3_free(aOut); - pTS->aaOutput[i] = 0; - aOut = aNew; - nOut = nNew; - } - } - } - - pTS->aaOutput[0] = aOut; - pTS->anOutput[0] = nOut; - return SQLITE_OK; -} - -/* -** Merge the doclist aDoclist/nDoclist into the TermSelect object passed -** as the first argument. The merge is an "OR" merge (see function -** fts3DoclistOrMerge() for details). -** -** This function is called with the doclist for each term that matches -** a queried prefix. It merges all these doclists into one, the doclist -** for the specified prefix. Since there can be a very large number of -** doclists to merge, the merging is done pair-wise using the TermSelect -** object. -** -** This function returns SQLITE_OK if the merge is successful, or an -** SQLite error code (SQLITE_NOMEM) if an error occurs. -*/ -static int fts3TermSelectMerge( - Fts3Table *p, /* FTS table handle */ - TermSelect *pTS, /* TermSelect object to merge into */ - char *aDoclist, /* Pointer to doclist */ - int nDoclist /* Size of aDoclist in bytes */ -){ - if( pTS->aaOutput[0]==0 ){ - /* If this is the first term selected, copy the doclist to the output - ** buffer using memcpy(). */ - pTS->aaOutput[0] = sqlite3_malloc(nDoclist); - pTS->anOutput[0] = nDoclist; - if( pTS->aaOutput[0] ){ - memcpy(pTS->aaOutput[0], aDoclist, nDoclist); - }else{ - return SQLITE_NOMEM; - } - }else{ - char *aMerge = aDoclist; - int nMerge = nDoclist; - int iOut; - - for(iOut=0; iOutaaOutput); iOut++){ - if( pTS->aaOutput[iOut]==0 ){ - assert( iOut>0 ); - pTS->aaOutput[iOut] = aMerge; - pTS->anOutput[iOut] = nMerge; - break; - }else{ - char *aNew; - int nNew; - - int rc = fts3DoclistOrMerge(p->bDescIdx, aMerge, nMerge, - pTS->aaOutput[iOut], pTS->anOutput[iOut], &aNew, &nNew - ); - if( rc!=SQLITE_OK ){ - if( aMerge!=aDoclist ) sqlite3_free(aMerge); - return rc; - } - - if( aMerge!=aDoclist ) sqlite3_free(aMerge); - sqlite3_free(pTS->aaOutput[iOut]); - pTS->aaOutput[iOut] = 0; - - aMerge = aNew; - nMerge = nNew; - if( (iOut+1)==SizeofArray(pTS->aaOutput) ){ - pTS->aaOutput[iOut] = aMerge; - pTS->anOutput[iOut] = nMerge; - } - } - } - } - return SQLITE_OK; -} - -/* -** Append SegReader object pNew to the end of the pCsr->apSegment[] array. -*/ -static int fts3SegReaderCursorAppend( - Fts3MultiSegReader *pCsr, - Fts3SegReader *pNew -){ - if( (pCsr->nSegment%16)==0 ){ - Fts3SegReader **apNew; - int nByte = (pCsr->nSegment + 16)*sizeof(Fts3SegReader*); - apNew = (Fts3SegReader **)sqlite3_realloc(pCsr->apSegment, nByte); - if( !apNew ){ - sqlite3Fts3SegReaderFree(pNew); - return SQLITE_NOMEM; - } - pCsr->apSegment = apNew; - } - pCsr->apSegment[pCsr->nSegment++] = pNew; - return SQLITE_OK; -} - -/* -** Add seg-reader objects to the Fts3MultiSegReader object passed as the -** 8th argument. -** -** This function returns SQLITE_OK if successful, or an SQLite error code -** otherwise. -*/ -static int fts3SegReaderCursor( - Fts3Table *p, /* FTS3 table handle */ - int iIndex, /* Index to search (from 0 to p->nIndex-1) */ - int iLevel, /* Level of segments to scan */ - const char *zTerm, /* Term to query for */ - int nTerm, /* Size of zTerm in bytes */ - int isPrefix, /* True for a prefix search */ - int isScan, /* True to scan from zTerm to EOF */ - Fts3MultiSegReader *pCsr /* Cursor object to populate */ -){ - int rc = SQLITE_OK; /* Error code */ - sqlite3_stmt *pStmt = 0; /* Statement to iterate through segments */ - int rc2; /* Result of sqlite3_reset() */ - - /* If iLevel is less than 0 and this is not a scan, include a seg-reader - ** for the pending-terms. If this is a scan, then this call must be being - ** made by an fts4aux module, not an FTS table. In this case calling - ** Fts3SegReaderPending might segfault, as the data structures used by - ** fts4aux are not completely populated. So it's easiest to filter these - ** calls out here. */ - if( iLevel<0 && p->aIndex ){ - Fts3SegReader *pSeg = 0; - rc = sqlite3Fts3SegReaderPending(p, iIndex, zTerm, nTerm, isPrefix, &pSeg); - if( rc==SQLITE_OK && pSeg ){ - rc = fts3SegReaderCursorAppend(pCsr, pSeg); - } - } - - if( iLevel!=FTS3_SEGCURSOR_PENDING ){ - if( rc==SQLITE_OK ){ - rc = sqlite3Fts3AllSegdirs(p, iIndex, iLevel, &pStmt); - } - - while( rc==SQLITE_OK && SQLITE_ROW==(rc = sqlite3_step(pStmt)) ){ - Fts3SegReader *pSeg = 0; - - /* Read the values returned by the SELECT into local variables. */ - sqlite3_int64 iStartBlock = sqlite3_column_int64(pStmt, 1); - sqlite3_int64 iLeavesEndBlock = sqlite3_column_int64(pStmt, 2); - sqlite3_int64 iEndBlock = sqlite3_column_int64(pStmt, 3); - int nRoot = sqlite3_column_bytes(pStmt, 4); - char const *zRoot = sqlite3_column_blob(pStmt, 4); - - /* If zTerm is not NULL, and this segment is not stored entirely on its - ** root node, the range of leaves scanned can be reduced. Do this. */ - if( iStartBlock && zTerm ){ - sqlite3_int64 *pi = (isPrefix ? &iLeavesEndBlock : 0); - rc = fts3SelectLeaf(p, zTerm, nTerm, zRoot, nRoot, &iStartBlock, pi); - if( rc!=SQLITE_OK ) goto finished; - if( isPrefix==0 && isScan==0 ) iLeavesEndBlock = iStartBlock; - } - - rc = sqlite3Fts3SegReaderNew(pCsr->nSegment+1, - iStartBlock, iLeavesEndBlock, iEndBlock, zRoot, nRoot, &pSeg - ); - if( rc!=SQLITE_OK ) goto finished; - rc = fts3SegReaderCursorAppend(pCsr, pSeg); - } - } - - finished: - rc2 = sqlite3_reset(pStmt); - if( rc==SQLITE_DONE ) rc = rc2; - - return rc; -} - -/* -** Set up a cursor object for iterating through a full-text index or a -** single level therein. -*/ -int sqlite3Fts3SegReaderCursor( - Fts3Table *p, /* FTS3 table handle */ - int iIndex, /* Index to search (from 0 to p->nIndex-1) */ - int iLevel, /* Level of segments to scan */ - const char *zTerm, /* Term to query for */ - int nTerm, /* Size of zTerm in bytes */ - int isPrefix, /* True for a prefix search */ - int isScan, /* True to scan from zTerm to EOF */ - Fts3MultiSegReader *pCsr /* Cursor object to populate */ -){ - assert( iIndex>=0 && iIndexnIndex ); - assert( iLevel==FTS3_SEGCURSOR_ALL - || iLevel==FTS3_SEGCURSOR_PENDING - || iLevel>=0 - ); - assert( iLevelaIndex==0 ); - - memset(pCsr, 0, sizeof(Fts3MultiSegReader)); - - return fts3SegReaderCursor( - p, iIndex, iLevel, zTerm, nTerm, isPrefix, isScan, pCsr - ); -} - -/* -** In addition to its current configuration, have the Fts3MultiSegReader -** passed as the 4th argument also scan the doclist for term zTerm/nTerm. -** -** SQLITE_OK is returned if no error occurs, otherwise an SQLite error code. -*/ -static int fts3SegReaderCursorAddZero( - Fts3Table *p, /* FTS virtual table handle */ - const char *zTerm, /* Term to scan doclist of */ - int nTerm, /* Number of bytes in zTerm */ - Fts3MultiSegReader *pCsr /* Fts3MultiSegReader to modify */ -){ - return fts3SegReaderCursor(p, 0, FTS3_SEGCURSOR_ALL, zTerm, nTerm, 0, 0,pCsr); -} - -/* -** Open an Fts3MultiSegReader to scan the doclist for term zTerm/nTerm. Or, -** if isPrefix is true, to scan the doclist for all terms for which -** zTerm/nTerm is a prefix. If successful, return SQLITE_OK and write -** a pointer to the new Fts3MultiSegReader to *ppSegcsr. Otherwise, return -** an SQLite error code. -** -** It is the responsibility of the caller to free this object by eventually -** passing it to fts3SegReaderCursorFree() -** -** SQLITE_OK is returned if no error occurs, otherwise an SQLite error code. -** Output parameter *ppSegcsr is set to 0 if an error occurs. -*/ -static int fts3TermSegReaderCursor( - Fts3Cursor *pCsr, /* Virtual table cursor handle */ - const char *zTerm, /* Term to query for */ - int nTerm, /* Size of zTerm in bytes */ - int isPrefix, /* True for a prefix search */ - Fts3MultiSegReader **ppSegcsr /* OUT: Allocated seg-reader cursor */ -){ - Fts3MultiSegReader *pSegcsr; /* Object to allocate and return */ - int rc = SQLITE_NOMEM; /* Return code */ - - pSegcsr = sqlite3_malloc(sizeof(Fts3MultiSegReader)); - if( pSegcsr ){ - int i; - int bFound = 0; /* True once an index has been found */ - Fts3Table *p = (Fts3Table *)pCsr->base.pVtab; - - if( isPrefix ){ - for(i=1; bFound==0 && inIndex; i++){ - if( p->aIndex[i].nPrefix==nTerm ){ - bFound = 1; - rc = sqlite3Fts3SegReaderCursor( - p, i, FTS3_SEGCURSOR_ALL, zTerm, nTerm, 0, 0, pSegcsr); - pSegcsr->bLookup = 1; - } - } - - for(i=1; bFound==0 && inIndex; i++){ - if( p->aIndex[i].nPrefix==nTerm+1 ){ - bFound = 1; - rc = sqlite3Fts3SegReaderCursor( - p, i, FTS3_SEGCURSOR_ALL, zTerm, nTerm, 1, 0, pSegcsr - ); - if( rc==SQLITE_OK ){ - rc = fts3SegReaderCursorAddZero(p, zTerm, nTerm, pSegcsr); - } - } - } - } - - if( bFound==0 ){ - rc = sqlite3Fts3SegReaderCursor( - p, 0, FTS3_SEGCURSOR_ALL, zTerm, nTerm, isPrefix, 0, pSegcsr - ); - pSegcsr->bLookup = !isPrefix; - } - } - - *ppSegcsr = pSegcsr; - return rc; -} - -/* -** Free an Fts3MultiSegReader allocated by fts3TermSegReaderCursor(). -*/ -static void fts3SegReaderCursorFree(Fts3MultiSegReader *pSegcsr){ - sqlite3Fts3SegReaderFinish(pSegcsr); - sqlite3_free(pSegcsr); -} - -/* -** This function retreives the doclist for the specified term (or term -** prefix) from the database. -*/ -static int fts3TermSelect( - Fts3Table *p, /* Virtual table handle */ - Fts3PhraseToken *pTok, /* Token to query for */ - int iColumn, /* Column to query (or -ve for all columns) */ - int *pnOut, /* OUT: Size of buffer at *ppOut */ - char **ppOut /* OUT: Malloced result buffer */ -){ - int rc; /* Return code */ - Fts3MultiSegReader *pSegcsr; /* Seg-reader cursor for this term */ - TermSelect tsc; /* Object for pair-wise doclist merging */ - Fts3SegFilter filter; /* Segment term filter configuration */ - - pSegcsr = pTok->pSegcsr; - memset(&tsc, 0, sizeof(TermSelect)); - - filter.flags = FTS3_SEGMENT_IGNORE_EMPTY | FTS3_SEGMENT_REQUIRE_POS - | (pTok->isPrefix ? FTS3_SEGMENT_PREFIX : 0) - | (pTok->bFirst ? FTS3_SEGMENT_FIRST : 0) - | (iColumnnColumn ? FTS3_SEGMENT_COLUMN_FILTER : 0); - filter.iCol = iColumn; - filter.zTerm = pTok->z; - filter.nTerm = pTok->n; - - rc = sqlite3Fts3SegReaderStart(p, pSegcsr, &filter); - while( SQLITE_OK==rc - && SQLITE_ROW==(rc = sqlite3Fts3SegReaderStep(p, pSegcsr)) - ){ - rc = fts3TermSelectMerge(p, &tsc, pSegcsr->aDoclist, pSegcsr->nDoclist); - } - - if( rc==SQLITE_OK ){ - rc = fts3TermSelectFinishMerge(p, &tsc); - } - if( rc==SQLITE_OK ){ - *ppOut = tsc.aaOutput[0]; - *pnOut = tsc.anOutput[0]; - }else{ - int i; - for(i=0; ipSegcsr = 0; - return rc; -} - -/* -** This function counts the total number of docids in the doclist stored -** in buffer aList[], size nList bytes. -** -** If the isPoslist argument is true, then it is assumed that the doclist -** contains a position-list following each docid. Otherwise, it is assumed -** that the doclist is simply a list of docids stored as delta encoded -** varints. -*/ -static int fts3DoclistCountDocids(char *aList, int nList){ - int nDoc = 0; /* Return value */ - if( aList ){ - char *aEnd = &aList[nList]; /* Pointer to one byte after EOF */ - char *p = aList; /* Cursor */ - while( peSearch==FTS3_DOCID_SEARCH || pCsr->eSearch==FTS3_FULLSCAN_SEARCH ){ - if( SQLITE_ROW!=sqlite3_step(pCsr->pStmt) ){ - pCsr->isEof = 1; - rc = sqlite3_reset(pCsr->pStmt); - }else{ - pCsr->iPrevId = sqlite3_column_int64(pCsr->pStmt, 0); - rc = SQLITE_OK; - } - }else{ - rc = fts3EvalNext((Fts3Cursor *)pCursor); - } - assert( ((Fts3Table *)pCsr->base.pVtab)->pSegments==0 ); - return rc; -} - -/* -** This is the xFilter interface for the virtual table. See -** the virtual table xFilter method documentation for additional -** information. -** -** If idxNum==FTS3_FULLSCAN_SEARCH then do a full table scan against -** the %_content table. -** -** If idxNum==FTS3_DOCID_SEARCH then do a docid lookup for a single entry -** in the %_content table. -** -** If idxNum>=FTS3_FULLTEXT_SEARCH then use the full text index. The -** column on the left-hand side of the MATCH operator is column -** number idxNum-FTS3_FULLTEXT_SEARCH, 0 indexed. argv[0] is the right-hand -** side of the MATCH operator. -*/ -static int fts3FilterMethod( - sqlite3_vtab_cursor *pCursor, /* The cursor used for this query */ - int idxNum, /* Strategy index */ - const char *idxStr, /* Unused */ - int nVal, /* Number of elements in apVal */ - sqlite3_value **apVal /* Arguments for the indexing scheme */ -){ - int rc; - char *zSql; /* SQL statement used to access %_content */ - Fts3Table *p = (Fts3Table *)pCursor->pVtab; - Fts3Cursor *pCsr = (Fts3Cursor *)pCursor; - - UNUSED_PARAMETER(idxStr); - UNUSED_PARAMETER(nVal); - - assert( idxNum>=0 && idxNum<=(FTS3_FULLTEXT_SEARCH+p->nColumn) ); - assert( nVal==0 || nVal==1 ); - assert( (nVal==0)==(idxNum==FTS3_FULLSCAN_SEARCH) ); - assert( p->pSegments==0 ); - - /* In case the cursor has been used before, clear it now. */ - sqlite3_finalize(pCsr->pStmt); - sqlite3_free(pCsr->aDoclist); - sqlite3Fts3ExprFree(pCsr->pExpr); - memset(&pCursor[1], 0, sizeof(Fts3Cursor)-sizeof(sqlite3_vtab_cursor)); - - if( idxStr ){ - pCsr->bDesc = (idxStr[0]=='D'); - }else{ - pCsr->bDesc = p->bDescIdx; - } - pCsr->eSearch = (i16)idxNum; - - if( idxNum!=FTS3_DOCID_SEARCH && idxNum!=FTS3_FULLSCAN_SEARCH ){ - int iCol = idxNum-FTS3_FULLTEXT_SEARCH; - const char *zQuery = (const char *)sqlite3_value_text(apVal[0]); - - if( zQuery==0 && sqlite3_value_type(apVal[0])!=SQLITE_NULL ){ - return SQLITE_NOMEM; - } - - rc = sqlite3Fts3ExprParse(p->pTokenizer, p->azColumn, p->bHasStat, - p->nColumn, iCol, zQuery, -1, &pCsr->pExpr - ); - if( rc!=SQLITE_OK ){ - if( rc==SQLITE_ERROR ){ - static const char *zErr = "malformed MATCH expression: [%s]"; - p->base.zErrMsg = sqlite3_mprintf(zErr, zQuery); - } - return rc; - } - - rc = sqlite3Fts3ReadLock(p); - if( rc!=SQLITE_OK ) return rc; - - rc = fts3EvalStart(pCsr); - - sqlite3Fts3SegmentsClose(p); - if( rc!=SQLITE_OK ) return rc; - pCsr->pNextId = pCsr->aDoclist; - pCsr->iPrevId = 0; - } - - /* Compile a SELECT statement for this cursor. For a full-table-scan, the - ** statement loops through all rows of the %_content table. For a - ** full-text query or docid lookup, the statement retrieves a single - ** row by docid. - */ - if( idxNum==FTS3_FULLSCAN_SEARCH ){ - zSql = sqlite3_mprintf( - "SELECT %s ORDER BY rowid %s", - p->zReadExprlist, (pCsr->bDesc ? "DESC" : "ASC") - ); - if( zSql ){ - rc = sqlite3_prepare_v2(p->db, zSql, -1, &pCsr->pStmt, 0); - sqlite3_free(zSql); - }else{ - rc = SQLITE_NOMEM; - } - }else if( idxNum==FTS3_DOCID_SEARCH ){ - rc = fts3CursorSeekStmt(pCsr, &pCsr->pStmt); - if( rc==SQLITE_OK ){ - rc = sqlite3_bind_value(pCsr->pStmt, 1, apVal[0]); - } - } - if( rc!=SQLITE_OK ) return rc; - - return fts3NextMethod(pCursor); -} - -/* -** This is the xEof method of the virtual table. SQLite calls this -** routine to find out if it has reached the end of a result set. -*/ -static int fts3EofMethod(sqlite3_vtab_cursor *pCursor){ - return ((Fts3Cursor *)pCursor)->isEof; -} - -/* -** This is the xRowid method. The SQLite core calls this routine to -** retrieve the rowid for the current row of the result set. fts3 -** exposes %_content.docid as the rowid for the virtual table. The -** rowid should be written to *pRowid. -*/ -static int fts3RowidMethod(sqlite3_vtab_cursor *pCursor, sqlite_int64 *pRowid){ - Fts3Cursor *pCsr = (Fts3Cursor *) pCursor; - *pRowid = pCsr->iPrevId; - return SQLITE_OK; -} - -/* -** This is the xColumn method, called by SQLite to request a value from -** the row that the supplied cursor currently points to. -*/ -static int fts3ColumnMethod( - sqlite3_vtab_cursor *pCursor, /* Cursor to retrieve value from */ - sqlite3_context *pContext, /* Context for sqlite3_result_xxx() calls */ - int iCol /* Index of column to read value from */ -){ - int rc = SQLITE_OK; /* Return Code */ - Fts3Cursor *pCsr = (Fts3Cursor *) pCursor; - Fts3Table *p = (Fts3Table *)pCursor->pVtab; - - /* The column value supplied by SQLite must be in range. */ - assert( iCol>=0 && iCol<=p->nColumn+1 ); - - if( iCol==p->nColumn+1 ){ - /* This call is a request for the "docid" column. Since "docid" is an - ** alias for "rowid", use the xRowid() method to obtain the value. - */ - sqlite3_result_int64(pContext, pCsr->iPrevId); - }else if( iCol==p->nColumn ){ - /* The extra column whose name is the same as the table. - ** Return a blob which is a pointer to the cursor. - */ - sqlite3_result_blob(pContext, &pCsr, sizeof(pCsr), SQLITE_TRANSIENT); - }else{ - rc = fts3CursorSeek(0, pCsr); - if( rc==SQLITE_OK && sqlite3_data_count(pCsr->pStmt)>(iCol+1) ){ - sqlite3_result_value(pContext, sqlite3_column_value(pCsr->pStmt, iCol+1)); - } - } - - assert( ((Fts3Table *)pCsr->base.pVtab)->pSegments==0 ); - return rc; -} - -/* -** This function is the implementation of the xUpdate callback used by -** FTS3 virtual tables. It is invoked by SQLite each time a row is to be -** inserted, updated or deleted. -*/ -static int fts3UpdateMethod( - sqlite3_vtab *pVtab, /* Virtual table handle */ - int nArg, /* Size of argument array */ - sqlite3_value **apVal, /* Array of arguments */ - sqlite_int64 *pRowid /* OUT: The affected (or effected) rowid */ -){ - return sqlite3Fts3UpdateMethod(pVtab, nArg, apVal, pRowid); -} - -/* -** Implementation of xSync() method. Flush the contents of the pending-terms -** hash-table to the database. -*/ -static int fts3SyncMethod(sqlite3_vtab *pVtab){ - int rc = sqlite3Fts3PendingTermsFlush((Fts3Table *)pVtab); - sqlite3Fts3SegmentsClose((Fts3Table *)pVtab); - return rc; -} - -/* -** Implementation of xBegin() method. This is a no-op. -*/ -static int fts3BeginMethod(sqlite3_vtab *pVtab){ - TESTONLY( Fts3Table *p = (Fts3Table*)pVtab ); - UNUSED_PARAMETER(pVtab); - assert( p->pSegments==0 ); - assert( p->nPendingData==0 ); - assert( p->inTransaction!=1 ); - TESTONLY( p->inTransaction = 1 ); - TESTONLY( p->mxSavepoint = -1; ); - return SQLITE_OK; -} - -/* -** Implementation of xCommit() method. This is a no-op. The contents of -** the pending-terms hash-table have already been flushed into the database -** by fts3SyncMethod(). -*/ -static int fts3CommitMethod(sqlite3_vtab *pVtab){ - TESTONLY( Fts3Table *p = (Fts3Table*)pVtab ); - UNUSED_PARAMETER(pVtab); - assert( p->nPendingData==0 ); - assert( p->inTransaction!=0 ); - assert( p->pSegments==0 ); - TESTONLY( p->inTransaction = 0 ); - TESTONLY( p->mxSavepoint = -1; ); - return SQLITE_OK; -} - -/* -** Implementation of xRollback(). Discard the contents of the pending-terms -** hash-table. Any changes made to the database are reverted by SQLite. -*/ -static int fts3RollbackMethod(sqlite3_vtab *pVtab){ - Fts3Table *p = (Fts3Table*)pVtab; - sqlite3Fts3PendingTermsClear(p); - assert( p->inTransaction!=0 ); - TESTONLY( p->inTransaction = 0 ); - TESTONLY( p->mxSavepoint = -1; ); - return SQLITE_OK; -} - -/* -** When called, *ppPoslist must point to the byte immediately following the -** end of a position-list. i.e. ( (*ppPoslist)[-1]==POS_END ). This function -** moves *ppPoslist so that it instead points to the first byte of the -** same position list. -*/ -static void fts3ReversePoslist(char *pStart, char **ppPoslist){ - char *p = &(*ppPoslist)[-2]; - char c = 0; - - while( p>pStart && (c=*p--)==0 ); - while( p>pStart && (*p & 0x80) | c ){ - c = *p--; - } - if( p>pStart ){ p = &p[2]; } - while( *p++&0x80 ); - *ppPoslist = p; -} - -/* -** Helper function used by the implementation of the overloaded snippet(), -** offsets() and optimize() SQL functions. -** -** If the value passed as the third argument is a blob of size -** sizeof(Fts3Cursor*), then the blob contents are copied to the -** output variable *ppCsr and SQLITE_OK is returned. Otherwise, an error -** message is written to context pContext and SQLITE_ERROR returned. The -** string passed via zFunc is used as part of the error message. -*/ -static int fts3FunctionArg( - sqlite3_context *pContext, /* SQL function call context */ - const char *zFunc, /* Function name */ - sqlite3_value *pVal, /* argv[0] passed to function */ - Fts3Cursor **ppCsr /* OUT: Store cursor handle here */ -){ - Fts3Cursor *pRet; - if( sqlite3_value_type(pVal)!=SQLITE_BLOB - || sqlite3_value_bytes(pVal)!=sizeof(Fts3Cursor *) - ){ - char *zErr = sqlite3_mprintf("illegal first argument to %s", zFunc); - sqlite3_result_error(pContext, zErr, -1); - sqlite3_free(zErr); - return SQLITE_ERROR; - } - memcpy(&pRet, sqlite3_value_blob(pVal), sizeof(Fts3Cursor *)); - *ppCsr = pRet; - return SQLITE_OK; -} - -/* -** Implementation of the snippet() function for FTS3 -*/ -static void fts3SnippetFunc( - sqlite3_context *pContext, /* SQLite function call context */ - int nVal, /* Size of apVal[] array */ - sqlite3_value **apVal /* Array of arguments */ -){ - Fts3Cursor *pCsr; /* Cursor handle passed through apVal[0] */ - const char *zStart = ""; - const char *zEnd = ""; - const char *zEllipsis = "..."; - int iCol = -1; - int nToken = 15; /* Default number of tokens in snippet */ - - /* There must be at least one argument passed to this function (otherwise - ** the non-overloaded version would have been called instead of this one). - */ - assert( nVal>=1 ); - - if( nVal>6 ){ - sqlite3_result_error(pContext, - "wrong number of arguments to function snippet()", -1); - return; - } - if( fts3FunctionArg(pContext, "snippet", apVal[0], &pCsr) ) return; - - switch( nVal ){ - case 6: nToken = sqlite3_value_int(apVal[5]); - case 5: iCol = sqlite3_value_int(apVal[4]); - case 4: zEllipsis = (const char*)sqlite3_value_text(apVal[3]); - case 3: zEnd = (const char*)sqlite3_value_text(apVal[2]); - case 2: zStart = (const char*)sqlite3_value_text(apVal[1]); - } - if( !zEllipsis || !zEnd || !zStart ){ - sqlite3_result_error_nomem(pContext); - }else if( SQLITE_OK==fts3CursorSeek(pContext, pCsr) ){ - sqlite3Fts3Snippet(pContext, pCsr, zStart, zEnd, zEllipsis, iCol, nToken); - } -} - -/* -** Implementation of the offsets() function for FTS3 -*/ -static void fts3OffsetsFunc( - sqlite3_context *pContext, /* SQLite function call context */ - int nVal, /* Size of argument array */ - sqlite3_value **apVal /* Array of arguments */ -){ - Fts3Cursor *pCsr; /* Cursor handle passed through apVal[0] */ - - UNUSED_PARAMETER(nVal); - - assert( nVal==1 ); - if( fts3FunctionArg(pContext, "offsets", apVal[0], &pCsr) ) return; - assert( pCsr ); - if( SQLITE_OK==fts3CursorSeek(pContext, pCsr) ){ - sqlite3Fts3Offsets(pContext, pCsr); - } -} - -/* -** Implementation of the special optimize() function for FTS3. This -** function merges all segments in the database to a single segment. -** Example usage is: -** -** SELECT optimize(t) FROM t LIMIT 1; -** -** where 't' is the name of an FTS3 table. -*/ -static void fts3OptimizeFunc( - sqlite3_context *pContext, /* SQLite function call context */ - int nVal, /* Size of argument array */ - sqlite3_value **apVal /* Array of arguments */ -){ - int rc; /* Return code */ - Fts3Table *p; /* Virtual table handle */ - Fts3Cursor *pCursor; /* Cursor handle passed through apVal[0] */ - - UNUSED_PARAMETER(nVal); - - assert( nVal==1 ); - if( fts3FunctionArg(pContext, "optimize", apVal[0], &pCursor) ) return; - p = (Fts3Table *)pCursor->base.pVtab; - assert( p ); - - rc = sqlite3Fts3Optimize(p); - - switch( rc ){ - case SQLITE_OK: - sqlite3_result_text(pContext, "Index optimized", -1, SQLITE_STATIC); - break; - case SQLITE_DONE: - sqlite3_result_text(pContext, "Index already optimal", -1, SQLITE_STATIC); - break; - default: - sqlite3_result_error_code(pContext, rc); - break; - } -} - -/* -** Implementation of the matchinfo() function for FTS3 -*/ -static void fts3MatchinfoFunc( - sqlite3_context *pContext, /* SQLite function call context */ - int nVal, /* Size of argument array */ - sqlite3_value **apVal /* Array of arguments */ -){ - Fts3Cursor *pCsr; /* Cursor handle passed through apVal[0] */ - assert( nVal==1 || nVal==2 ); - if( SQLITE_OK==fts3FunctionArg(pContext, "matchinfo", apVal[0], &pCsr) ){ - const char *zArg = 0; - if( nVal>1 ){ - zArg = (const char *)sqlite3_value_text(apVal[1]); - } - sqlite3Fts3Matchinfo(pContext, pCsr, zArg); - } -} - -/* -** This routine implements the xFindFunction method for the FTS3 -** virtual table. -*/ -static int fts3FindFunctionMethod( - sqlite3_vtab *pVtab, /* Virtual table handle */ - int nArg, /* Number of SQL function arguments */ - const char *zName, /* Name of SQL function */ - void (**pxFunc)(sqlite3_context*,int,sqlite3_value**), /* OUT: Result */ - void **ppArg /* Unused */ -){ - struct Overloaded { - const char *zName; - void (*xFunc)(sqlite3_context*,int,sqlite3_value**); - } aOverload[] = { - { "snippet", fts3SnippetFunc }, - { "offsets", fts3OffsetsFunc }, - { "optimize", fts3OptimizeFunc }, - { "matchinfo", fts3MatchinfoFunc }, - }; - int i; /* Iterator variable */ - - UNUSED_PARAMETER(pVtab); - UNUSED_PARAMETER(nArg); - UNUSED_PARAMETER(ppArg); - - for(i=0; idb; /* Database connection */ - int rc; /* Return Code */ - - /* As it happens, the pending terms table is always empty here. This is - ** because an "ALTER TABLE RENAME TABLE" statement inside a transaction - ** always opens a savepoint transaction. And the xSavepoint() method - ** flushes the pending terms table. But leave the (no-op) call to - ** PendingTermsFlush() in in case that changes. - */ - assert( p->nPendingData==0 ); - rc = sqlite3Fts3PendingTermsFlush(p); - - if( p->zContentTbl==0 ){ - fts3DbExec(&rc, db, - "ALTER TABLE %Q.'%q_content' RENAME TO '%q_content';", - p->zDb, p->zName, zName - ); - } - - if( p->bHasDocsize ){ - fts3DbExec(&rc, db, - "ALTER TABLE %Q.'%q_docsize' RENAME TO '%q_docsize';", - p->zDb, p->zName, zName - ); - } - if( p->bHasStat ){ - fts3DbExec(&rc, db, - "ALTER TABLE %Q.'%q_stat' RENAME TO '%q_stat';", - p->zDb, p->zName, zName - ); - } - fts3DbExec(&rc, db, - "ALTER TABLE %Q.'%q_segments' RENAME TO '%q_segments';", - p->zDb, p->zName, zName - ); - fts3DbExec(&rc, db, - "ALTER TABLE %Q.'%q_segdir' RENAME TO '%q_segdir';", - p->zDb, p->zName, zName - ); - return rc; -} - -/* -** The xSavepoint() method. -** -** Flush the contents of the pending-terms table to disk. -*/ -static int fts3SavepointMethod(sqlite3_vtab *pVtab, int iSavepoint){ - UNUSED_PARAMETER(iSavepoint); - assert( ((Fts3Table *)pVtab)->inTransaction ); - assert( ((Fts3Table *)pVtab)->mxSavepoint < iSavepoint ); - TESTONLY( ((Fts3Table *)pVtab)->mxSavepoint = iSavepoint ); - return fts3SyncMethod(pVtab); -} - -/* -** The xRelease() method. -** -** This is a no-op. -*/ -static int fts3ReleaseMethod(sqlite3_vtab *pVtab, int iSavepoint){ - TESTONLY( Fts3Table *p = (Fts3Table*)pVtab ); - UNUSED_PARAMETER(iSavepoint); - UNUSED_PARAMETER(pVtab); - assert( p->inTransaction ); - assert( p->mxSavepoint >= iSavepoint ); - TESTONLY( p->mxSavepoint = iSavepoint-1 ); - return SQLITE_OK; -} - -/* -** The xRollbackTo() method. -** -** Discard the contents of the pending terms table. -*/ -static int fts3RollbackToMethod(sqlite3_vtab *pVtab, int iSavepoint){ - Fts3Table *p = (Fts3Table*)pVtab; - UNUSED_PARAMETER(iSavepoint); - assert( p->inTransaction ); - assert( p->mxSavepoint >= iSavepoint ); - TESTONLY( p->mxSavepoint = iSavepoint ); - sqlite3Fts3PendingTermsClear(p); - return SQLITE_OK; -} - -static const sqlite3_module fts3Module = { - /* iVersion */ 2, - /* xCreate */ fts3CreateMethod, - /* xConnect */ fts3ConnectMethod, - /* xBestIndex */ fts3BestIndexMethod, - /* xDisconnect */ fts3DisconnectMethod, - /* xDestroy */ fts3DestroyMethod, - /* xOpen */ fts3OpenMethod, - /* xClose */ fts3CloseMethod, - /* xFilter */ fts3FilterMethod, - /* xNext */ fts3NextMethod, - /* xEof */ fts3EofMethod, - /* xColumn */ fts3ColumnMethod, - /* xRowid */ fts3RowidMethod, - /* xUpdate */ fts3UpdateMethod, - /* xBegin */ fts3BeginMethod, - /* xSync */ fts3SyncMethod, - /* xCommit */ fts3CommitMethod, - /* xRollback */ fts3RollbackMethod, - /* xFindFunction */ fts3FindFunctionMethod, - /* xRename */ fts3RenameMethod, - /* xSavepoint */ fts3SavepointMethod, - /* xRelease */ fts3ReleaseMethod, - /* xRollbackTo */ fts3RollbackToMethod, -}; - -/* -** This function is registered as the module destructor (called when an -** FTS3 enabled database connection is closed). It frees the memory -** allocated for the tokenizer hash table. -*/ -static void hashDestroy(void *p){ - Fts3Hash *pHash = (Fts3Hash *)p; - sqlite3Fts3HashClear(pHash); - sqlite3_free(pHash); -} - -/* -** The fts3 built-in tokenizers - "simple", "porter" and "icu"- are -** implemented in files fts3_tokenizer1.c, fts3_porter.c and fts3_icu.c -** respectively. The following three forward declarations are for functions -** declared in these files used to retrieve the respective implementations. -** -** Calling sqlite3Fts3SimpleTokenizerModule() sets the value pointed -** to by the argument to point to the "simple" tokenizer implementation. -** And so on. -*/ -void sqlite3Fts3SimpleTokenizerModule(sqlite3_tokenizer_module const**ppModule); -void sqlite3Fts3PorterTokenizerModule(sqlite3_tokenizer_module const**ppModule); -#ifdef SQLITE_ENABLE_ICU -void sqlite3Fts3IcuTokenizerModule(sqlite3_tokenizer_module const**ppModule); -#endif - -/* -** Initialise the fts3 extension. If this extension is built as part -** of the sqlite library, then this function is called directly by -** SQLite. If fts3 is built as a dynamically loadable extension, this -** function is called by the sqlite3_extension_init() entry point. -*/ -int sqlite3Fts3Init(sqlite3 *db){ - int rc = SQLITE_OK; - Fts3Hash *pHash = 0; - const sqlite3_tokenizer_module *pSimple = 0; - const sqlite3_tokenizer_module *pPorter = 0; - -#ifdef SQLITE_ENABLE_ICU - const sqlite3_tokenizer_module *pIcu = 0; - sqlite3Fts3IcuTokenizerModule(&pIcu); -#endif - -#ifdef SQLITE_TEST - rc = sqlite3Fts3InitTerm(db); - if( rc!=SQLITE_OK ) return rc; -#endif - - rc = sqlite3Fts3InitAux(db); - if( rc!=SQLITE_OK ) return rc; - - sqlite3Fts3SimpleTokenizerModule(&pSimple); - sqlite3Fts3PorterTokenizerModule(&pPorter); - - /* Allocate and initialise the hash-table used to store tokenizers. */ - pHash = sqlite3_malloc(sizeof(Fts3Hash)); - if( !pHash ){ - rc = SQLITE_NOMEM; - }else{ - sqlite3Fts3HashInit(pHash, FTS3_HASH_STRING, 1); - } - - /* Load the built-in tokenizers into the hash table */ - if( rc==SQLITE_OK ){ - if( sqlite3Fts3HashInsert(pHash, "simple", 7, (void *)pSimple) - || sqlite3Fts3HashInsert(pHash, "porter", 7, (void *)pPorter) -#ifdef SQLITE_ENABLE_ICU - || (pIcu && sqlite3Fts3HashInsert(pHash, "icu", 4, (void *)pIcu)) -#endif - ){ - rc = SQLITE_NOMEM; - } - } - -#ifdef SQLITE_TEST - if( rc==SQLITE_OK ){ - rc = sqlite3Fts3ExprInitTestInterface(db); - } -#endif - - /* Create the virtual table wrapper around the hash-table and overload - ** the two scalar functions. If this is successful, register the - ** module with sqlite. - */ - if( SQLITE_OK==rc - && SQLITE_OK==(rc = sqlite3Fts3InitHashTable(db, pHash, "fts3_tokenizer")) - && SQLITE_OK==(rc = sqlite3_overload_function(db, "snippet", -1)) - && SQLITE_OK==(rc = sqlite3_overload_function(db, "offsets", 1)) - && SQLITE_OK==(rc = sqlite3_overload_function(db, "matchinfo", 1)) - && SQLITE_OK==(rc = sqlite3_overload_function(db, "matchinfo", 2)) - && SQLITE_OK==(rc = sqlite3_overload_function(db, "optimize", 1)) - ){ - rc = sqlite3_create_module_v2( - db, "fts3", &fts3Module, (void *)pHash, hashDestroy - ); - if( rc==SQLITE_OK ){ - rc = sqlite3_create_module_v2( - db, "fts4", &fts3Module, (void *)pHash, 0 - ); - } - return rc; - } - - /* An error has occurred. Delete the hash table and return the error code. */ - assert( rc!=SQLITE_OK ); - if( pHash ){ - sqlite3Fts3HashClear(pHash); - sqlite3_free(pHash); - } - return rc; -} - -/* -** Allocate an Fts3MultiSegReader for each token in the expression headed -** by pExpr. -** -** An Fts3SegReader object is a cursor that can seek or scan a range of -** entries within a single segment b-tree. An Fts3MultiSegReader uses multiple -** Fts3SegReader objects internally to provide an interface to seek or scan -** within the union of all segments of a b-tree. Hence the name. -** -** If the allocated Fts3MultiSegReader just seeks to a single entry in a -** segment b-tree (if the term is not a prefix or it is a prefix for which -** there exists prefix b-tree of the right length) then it may be traversed -** and merged incrementally. Otherwise, it has to be merged into an in-memory -** doclist and then traversed. -*/ -static void fts3EvalAllocateReaders( - Fts3Cursor *pCsr, /* FTS cursor handle */ - Fts3Expr *pExpr, /* Allocate readers for this expression */ - int *pnToken, /* OUT: Total number of tokens in phrase. */ - int *pnOr, /* OUT: Total number of OR nodes in expr. */ - int *pRc /* IN/OUT: Error code */ -){ - if( pExpr && SQLITE_OK==*pRc ){ - if( pExpr->eType==FTSQUERY_PHRASE ){ - int i; - int nToken = pExpr->pPhrase->nToken; - *pnToken += nToken; - for(i=0; ipPhrase->aToken[i]; - int rc = fts3TermSegReaderCursor(pCsr, - pToken->z, pToken->n, pToken->isPrefix, &pToken->pSegcsr - ); - if( rc!=SQLITE_OK ){ - *pRc = rc; - return; - } - } - assert( pExpr->pPhrase->iDoclistToken==0 ); - pExpr->pPhrase->iDoclistToken = -1; - }else{ - *pnOr += (pExpr->eType==FTSQUERY_OR); - fts3EvalAllocateReaders(pCsr, pExpr->pLeft, pnToken, pnOr, pRc); - fts3EvalAllocateReaders(pCsr, pExpr->pRight, pnToken, pnOr, pRc); - } - } -} - -/* -** Arguments pList/nList contain the doclist for token iToken of phrase p. -** It is merged into the main doclist stored in p->doclist.aAll/nAll. -** -** This function assumes that pList points to a buffer allocated using -** sqlite3_malloc(). This function takes responsibility for eventually -** freeing the buffer. -*/ -static void fts3EvalPhraseMergeToken( - Fts3Table *pTab, /* FTS Table pointer */ - Fts3Phrase *p, /* Phrase to merge pList/nList into */ - int iToken, /* Token pList/nList corresponds to */ - char *pList, /* Pointer to doclist */ - int nList /* Number of bytes in pList */ -){ - assert( iToken!=p->iDoclistToken ); - - if( pList==0 ){ - sqlite3_free(p->doclist.aAll); - p->doclist.aAll = 0; - p->doclist.nAll = 0; - } - - else if( p->iDoclistToken<0 ){ - p->doclist.aAll = pList; - p->doclist.nAll = nList; - } - - else if( p->doclist.aAll==0 ){ - sqlite3_free(pList); - } - - else { - char *pLeft; - char *pRight; - int nLeft; - int nRight; - int nDiff; - - if( p->iDoclistTokendoclist.aAll; - nLeft = p->doclist.nAll; - pRight = pList; - nRight = nList; - nDiff = iToken - p->iDoclistToken; - }else{ - pRight = p->doclist.aAll; - nRight = p->doclist.nAll; - pLeft = pList; - nLeft = nList; - nDiff = p->iDoclistToken - iToken; - } - - fts3DoclistPhraseMerge(pTab->bDescIdx, nDiff, pLeft, nLeft, pRight,&nRight); - sqlite3_free(pLeft); - p->doclist.aAll = pRight; - p->doclist.nAll = nRight; - } - - if( iToken>p->iDoclistToken ) p->iDoclistToken = iToken; -} - -/* -** Load the doclist for phrase p into p->doclist.aAll/nAll. The loaded doclist -** does not take deferred tokens into account. -** -** SQLITE_OK is returned if no error occurs, otherwise an SQLite error code. -*/ -static int fts3EvalPhraseLoad( - Fts3Cursor *pCsr, /* FTS Cursor handle */ - Fts3Phrase *p /* Phrase object */ -){ - Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab; - int iToken; - int rc = SQLITE_OK; - - for(iToken=0; rc==SQLITE_OK && iTokennToken; iToken++){ - Fts3PhraseToken *pToken = &p->aToken[iToken]; - assert( pToken->pDeferred==0 || pToken->pSegcsr==0 ); - - if( pToken->pSegcsr ){ - int nThis = 0; - char *pThis = 0; - rc = fts3TermSelect(pTab, pToken, p->iColumn, &nThis, &pThis); - if( rc==SQLITE_OK ){ - fts3EvalPhraseMergeToken(pTab, p, iToken, pThis, nThis); - } - } - assert( pToken->pSegcsr==0 ); - } - - return rc; -} - -/* -** This function is called on each phrase after the position lists for -** any deferred tokens have been loaded into memory. It updates the phrases -** current position list to include only those positions that are really -** instances of the phrase (after considering deferred tokens). If this -** means that the phrase does not appear in the current row, doclist.pList -** and doclist.nList are both zeroed. -** -** SQLITE_OK is returned if no error occurs, otherwise an SQLite error code. -*/ -static int fts3EvalDeferredPhrase(Fts3Cursor *pCsr, Fts3Phrase *pPhrase){ - int iToken; /* Used to iterate through phrase tokens */ - char *aPoslist = 0; /* Position list for deferred tokens */ - int nPoslist = 0; /* Number of bytes in aPoslist */ - int iPrev = -1; /* Token number of previous deferred token */ - - assert( pPhrase->doclist.bFreeList==0 ); - - for(iToken=0; iTokennToken; iToken++){ - Fts3PhraseToken *pToken = &pPhrase->aToken[iToken]; - Fts3DeferredToken *pDeferred = pToken->pDeferred; - - if( pDeferred ){ - char *pList; - int nList; - int rc = sqlite3Fts3DeferredTokenList(pDeferred, &pList, &nList); - if( rc!=SQLITE_OK ) return rc; - - if( pList==0 ){ - sqlite3_free(aPoslist); - pPhrase->doclist.pList = 0; - pPhrase->doclist.nList = 0; - return SQLITE_OK; - - }else if( aPoslist==0 ){ - aPoslist = pList; - nPoslist = nList; - - }else{ - char *aOut = pList; - char *p1 = aPoslist; - char *p2 = aOut; - - assert( iPrev>=0 ); - fts3PoslistPhraseMerge(&aOut, iToken-iPrev, 0, 1, &p1, &p2); - sqlite3_free(aPoslist); - aPoslist = pList; - nPoslist = aOut - aPoslist; - if( nPoslist==0 ){ - sqlite3_free(aPoslist); - pPhrase->doclist.pList = 0; - pPhrase->doclist.nList = 0; - return SQLITE_OK; - } - } - iPrev = iToken; - } - } - - if( iPrev>=0 ){ - int nMaxUndeferred = pPhrase->iDoclistToken; - if( nMaxUndeferred<0 ){ - pPhrase->doclist.pList = aPoslist; - pPhrase->doclist.nList = nPoslist; - pPhrase->doclist.iDocid = pCsr->iPrevId; - pPhrase->doclist.bFreeList = 1; - }else{ - int nDistance; - char *p1; - char *p2; - char *aOut; - - if( nMaxUndeferred>iPrev ){ - p1 = aPoslist; - p2 = pPhrase->doclist.pList; - nDistance = nMaxUndeferred - iPrev; - }else{ - p1 = pPhrase->doclist.pList; - p2 = aPoslist; - nDistance = iPrev - nMaxUndeferred; - } - - aOut = (char *)sqlite3_malloc(nPoslist+8); - if( !aOut ){ - sqlite3_free(aPoslist); - return SQLITE_NOMEM; - } - - pPhrase->doclist.pList = aOut; - if( fts3PoslistPhraseMerge(&aOut, nDistance, 0, 1, &p1, &p2) ){ - pPhrase->doclist.bFreeList = 1; - pPhrase->doclist.nList = (aOut - pPhrase->doclist.pList); - }else{ - sqlite3_free(aOut); - pPhrase->doclist.pList = 0; - pPhrase->doclist.nList = 0; - } - sqlite3_free(aPoslist); - } - } - - return SQLITE_OK; -} - -/* -** This function is called for each Fts3Phrase in a full-text query -** expression to initialize the mechanism for returning rows. Once this -** function has been called successfully on an Fts3Phrase, it may be -** used with fts3EvalPhraseNext() to iterate through the matching docids. -** -** If parameter bOptOk is true, then the phrase may (or may not) use the -** incremental loading strategy. Otherwise, the entire doclist is loaded into -** memory within this call. -** -** SQLITE_OK is returned if no error occurs, otherwise an SQLite error code. -*/ -static int fts3EvalPhraseStart(Fts3Cursor *pCsr, int bOptOk, Fts3Phrase *p){ - int rc; /* Error code */ - Fts3PhraseToken *pFirst = &p->aToken[0]; - Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab; - - if( pCsr->bDesc==pTab->bDescIdx - && bOptOk==1 - && p->nToken==1 - && pFirst->pSegcsr - && pFirst->pSegcsr->bLookup - && pFirst->bFirst==0 - ){ - /* Use the incremental approach. */ - int iCol = (p->iColumn >= pTab->nColumn ? -1 : p->iColumn); - rc = sqlite3Fts3MsrIncrStart( - pTab, pFirst->pSegcsr, iCol, pFirst->z, pFirst->n); - p->bIncr = 1; - - }else{ - /* Load the full doclist for the phrase into memory. */ - rc = fts3EvalPhraseLoad(pCsr, p); - p->bIncr = 0; - } - - assert( rc!=SQLITE_OK || p->nToken<1 || p->aToken[0].pSegcsr==0 || p->bIncr ); - return rc; -} - -/* -** This function is used to iterate backwards (from the end to start) -** through doclists. It is used by this module to iterate through phrase -** doclists in reverse and by the fts3_write.c module to iterate through -** pending-terms lists when writing to databases with "order=desc". -** -** The doclist may be sorted in ascending (parameter bDescIdx==0) or -** descending (parameter bDescIdx==1) order of docid. Regardless, this -** function iterates from the end of the doclist to the beginning. -*/ -void sqlite3Fts3DoclistPrev( - int bDescIdx, /* True if the doclist is desc */ - char *aDoclist, /* Pointer to entire doclist */ - int nDoclist, /* Length of aDoclist in bytes */ - char **ppIter, /* IN/OUT: Iterator pointer */ - sqlite3_int64 *piDocid, /* IN/OUT: Docid pointer */ - int *pnList, /* IN/OUT: List length pointer */ - u8 *pbEof /* OUT: End-of-file flag */ -){ - char *p = *ppIter; - - assert( nDoclist>0 ); - assert( *pbEof==0 ); - assert( p || *piDocid==0 ); - assert( !p || (p>aDoclist && p<&aDoclist[nDoclist]) ); - - if( p==0 ){ - sqlite3_int64 iDocid = 0; - char *pNext = 0; - char *pDocid = aDoclist; - char *pEnd = &aDoclist[nDoclist]; - int iMul = 1; - - while( pDociddoclist; - Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab; - - if( p->bIncr ){ - assert( p->nToken==1 ); - assert( pDL->pNextDocid==0 ); - rc = sqlite3Fts3MsrIncrNext(pTab, p->aToken[0].pSegcsr, - &pDL->iDocid, &pDL->pList, &pDL->nList - ); - if( rc==SQLITE_OK && !pDL->pList ){ - *pbEof = 1; - } - }else if( pCsr->bDesc!=pTab->bDescIdx && pDL->nAll ){ - sqlite3Fts3DoclistPrev(pTab->bDescIdx, pDL->aAll, pDL->nAll, - &pDL->pNextDocid, &pDL->iDocid, &pDL->nList, pbEof - ); - pDL->pList = pDL->pNextDocid; - }else{ - char *pIter; /* Used to iterate through aAll */ - char *pEnd = &pDL->aAll[pDL->nAll]; /* 1 byte past end of aAll */ - if( pDL->pNextDocid ){ - pIter = pDL->pNextDocid; - }else{ - pIter = pDL->aAll; - } - - if( pIter>=pEnd ){ - /* We have already reached the end of this doclist. EOF. */ - *pbEof = 1; - }else{ - sqlite3_int64 iDelta; - pIter += sqlite3Fts3GetVarint(pIter, &iDelta); - if( pTab->bDescIdx==0 || pDL->pNextDocid==0 ){ - pDL->iDocid += iDelta; - }else{ - pDL->iDocid -= iDelta; - } - pDL->pList = pIter; - fts3PoslistCopy(0, &pIter); - pDL->nList = (pIter - pDL->pList); - - /* pIter now points just past the 0x00 that terminates the position- - ** list for document pDL->iDocid. However, if this position-list was - ** edited in place by fts3EvalNearTrim(), then pIter may not actually - ** point to the start of the next docid value. The following line deals - ** with this case by advancing pIter past the zero-padding added by - ** fts3EvalNearTrim(). */ - while( pIterpNextDocid = pIter; - assert( pIter>=&pDL->aAll[pDL->nAll] || *pIter ); - *pbEof = 0; - } - } - - return rc; -} - -/* -** -** If *pRc is not SQLITE_OK when this function is called, it is a no-op. -** Otherwise, fts3EvalPhraseStart() is called on all phrases within the -** expression. Also the Fts3Expr.bDeferred variable is set to true for any -** expressions for which all descendent tokens are deferred. -** -** If parameter bOptOk is zero, then it is guaranteed that the -** Fts3Phrase.doclist.aAll/nAll variables contain the entire doclist for -** each phrase in the expression (subject to deferred token processing). -** Or, if bOptOk is non-zero, then one or more tokens within the expression -** may be loaded incrementally, meaning doclist.aAll/nAll is not available. -** -** If an error occurs within this function, *pRc is set to an SQLite error -** code before returning. -*/ -static void fts3EvalStartReaders( - Fts3Cursor *pCsr, /* FTS Cursor handle */ - Fts3Expr *pExpr, /* Expression to initialize phrases in */ - int bOptOk, /* True to enable incremental loading */ - int *pRc /* IN/OUT: Error code */ -){ - if( pExpr && SQLITE_OK==*pRc ){ - if( pExpr->eType==FTSQUERY_PHRASE ){ - int i; - int nToken = pExpr->pPhrase->nToken; - for(i=0; ipPhrase->aToken[i].pDeferred==0 ) break; - } - pExpr->bDeferred = (i==nToken); - *pRc = fts3EvalPhraseStart(pCsr, bOptOk, pExpr->pPhrase); - }else{ - fts3EvalStartReaders(pCsr, pExpr->pLeft, bOptOk, pRc); - fts3EvalStartReaders(pCsr, pExpr->pRight, bOptOk, pRc); - pExpr->bDeferred = (pExpr->pLeft->bDeferred && pExpr->pRight->bDeferred); - } - } -} - -/* -** An array of the following structures is assembled as part of the process -** of selecting tokens to defer before the query starts executing (as part -** of the xFilter() method). There is one element in the array for each -** token in the FTS expression. -** -** Tokens are divided into AND/NEAR clusters. All tokens in a cluster belong -** to phrases that are connected only by AND and NEAR operators (not OR or -** NOT). When determining tokens to defer, each AND/NEAR cluster is considered -** separately. The root of a tokens AND/NEAR cluster is stored in -** Fts3TokenAndCost.pRoot. -*/ -typedef struct Fts3TokenAndCost Fts3TokenAndCost; -struct Fts3TokenAndCost { - Fts3Phrase *pPhrase; /* The phrase the token belongs to */ - int iToken; /* Position of token in phrase */ - Fts3PhraseToken *pToken; /* The token itself */ - Fts3Expr *pRoot; /* Root of NEAR/AND cluster */ - int nOvfl; /* Number of overflow pages to load doclist */ - int iCol; /* The column the token must match */ -}; - -/* -** This function is used to populate an allocated Fts3TokenAndCost array. -** -** If *pRc is not SQLITE_OK when this function is called, it is a no-op. -** Otherwise, if an error occurs during execution, *pRc is set to an -** SQLite error code. -*/ -static void fts3EvalTokenCosts( - Fts3Cursor *pCsr, /* FTS Cursor handle */ - Fts3Expr *pRoot, /* Root of current AND/NEAR cluster */ - Fts3Expr *pExpr, /* Expression to consider */ - Fts3TokenAndCost **ppTC, /* Write new entries to *(*ppTC)++ */ - Fts3Expr ***ppOr, /* Write new OR root to *(*ppOr)++ */ - int *pRc /* IN/OUT: Error code */ -){ - if( *pRc==SQLITE_OK ){ - if( pExpr->eType==FTSQUERY_PHRASE ){ - Fts3Phrase *pPhrase = pExpr->pPhrase; - int i; - for(i=0; *pRc==SQLITE_OK && inToken; i++){ - Fts3TokenAndCost *pTC = (*ppTC)++; - pTC->pPhrase = pPhrase; - pTC->iToken = i; - pTC->pRoot = pRoot; - pTC->pToken = &pPhrase->aToken[i]; - pTC->iCol = pPhrase->iColumn; - *pRc = sqlite3Fts3MsrOvfl(pCsr, pTC->pToken->pSegcsr, &pTC->nOvfl); - } - }else if( pExpr->eType!=FTSQUERY_NOT ){ - assert( pExpr->eType==FTSQUERY_OR - || pExpr->eType==FTSQUERY_AND - || pExpr->eType==FTSQUERY_NEAR - ); - assert( pExpr->pLeft && pExpr->pRight ); - if( pExpr->eType==FTSQUERY_OR ){ - pRoot = pExpr->pLeft; - **ppOr = pRoot; - (*ppOr)++; - } - fts3EvalTokenCosts(pCsr, pRoot, pExpr->pLeft, ppTC, ppOr, pRc); - if( pExpr->eType==FTSQUERY_OR ){ - pRoot = pExpr->pRight; - **ppOr = pRoot; - (*ppOr)++; - } - fts3EvalTokenCosts(pCsr, pRoot, pExpr->pRight, ppTC, ppOr, pRc); - } - } -} - -/* -** Determine the average document (row) size in pages. If successful, -** write this value to *pnPage and return SQLITE_OK. Otherwise, return -** an SQLite error code. -** -** The average document size in pages is calculated by first calculating -** determining the average size in bytes, B. If B is less than the amount -** of data that will fit on a single leaf page of an intkey table in -** this database, then the average docsize is 1. Otherwise, it is 1 plus -** the number of overflow pages consumed by a record B bytes in size. -*/ -static int fts3EvalAverageDocsize(Fts3Cursor *pCsr, int *pnPage){ - if( pCsr->nRowAvg==0 ){ - /* The average document size, which is required to calculate the cost - ** of each doclist, has not yet been determined. Read the required - ** data from the %_stat table to calculate it. - ** - ** Entry 0 of the %_stat table is a blob containing (nCol+1) FTS3 - ** varints, where nCol is the number of columns in the FTS3 table. - ** The first varint is the number of documents currently stored in - ** the table. The following nCol varints contain the total amount of - ** data stored in all rows of each column of the table, from left - ** to right. - */ - int rc; - Fts3Table *p = (Fts3Table*)pCsr->base.pVtab; - sqlite3_stmt *pStmt; - sqlite3_int64 nDoc = 0; - sqlite3_int64 nByte = 0; - const char *pEnd; - const char *a; - - rc = sqlite3Fts3SelectDoctotal(p, &pStmt); - if( rc!=SQLITE_OK ) return rc; - a = sqlite3_column_blob(pStmt, 0); - assert( a ); - - pEnd = &a[sqlite3_column_bytes(pStmt, 0)]; - a += sqlite3Fts3GetVarint(a, &nDoc); - while( anDoc = nDoc; - pCsr->nRowAvg = (int)(((nByte / nDoc) + p->nPgsz) / p->nPgsz); - assert( pCsr->nRowAvg>0 ); - rc = sqlite3_reset(pStmt); - if( rc!=SQLITE_OK ) return rc; - } - - *pnPage = pCsr->nRowAvg; - return SQLITE_OK; -} - -/* -** This function is called to select the tokens (if any) that will be -** deferred. The array aTC[] has already been populated when this is -** called. -** -** This function is called once for each AND/NEAR cluster in the -** expression. Each invocation determines which tokens to defer within -** the cluster with root node pRoot. See comments above the definition -** of struct Fts3TokenAndCost for more details. -** -** If no error occurs, SQLITE_OK is returned and sqlite3Fts3DeferToken() -** called on each token to defer. Otherwise, an SQLite error code is -** returned. -*/ -static int fts3EvalSelectDeferred( - Fts3Cursor *pCsr, /* FTS Cursor handle */ - Fts3Expr *pRoot, /* Consider tokens with this root node */ - Fts3TokenAndCost *aTC, /* Array of expression tokens and costs */ - int nTC /* Number of entries in aTC[] */ -){ - Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab; - int nDocSize = 0; /* Number of pages per doc loaded */ - int rc = SQLITE_OK; /* Return code */ - int ii; /* Iterator variable for various purposes */ - int nOvfl = 0; /* Total overflow pages used by doclists */ - int nToken = 0; /* Total number of tokens in cluster */ - - int nMinEst = 0; /* The minimum count for any phrase so far. */ - int nLoad4 = 1; /* (Phrases that will be loaded)^4. */ - - /* Tokens are never deferred for FTS tables created using the content=xxx - ** option. The reason being that it is not guaranteed that the content - ** table actually contains the same data as the index. To prevent this from - ** causing any problems, the deferred token optimization is completely - ** disabled for content=xxx tables. */ - if( pTab->zContentTbl ){ - return SQLITE_OK; - } - - /* Count the tokens in this AND/NEAR cluster. If none of the doclists - ** associated with the tokens spill onto overflow pages, or if there is - ** only 1 token, exit early. No tokens to defer in this case. */ - for(ii=0; ii0 ); - - - /* Iterate through all tokens in this AND/NEAR cluster, in ascending order - ** of the number of overflow pages that will be loaded by the pager layer - ** to retrieve the entire doclist for the token from the full-text index. - ** Load the doclists for tokens that are either: - ** - ** a. The cheapest token in the entire query (i.e. the one visited by the - ** first iteration of this loop), or - ** - ** b. Part of a multi-token phrase. - ** - ** After each token doclist is loaded, merge it with the others from the - ** same phrase and count the number of documents that the merged doclist - ** contains. Set variable "nMinEst" to the smallest number of documents in - ** any phrase doclist for which 1 or more token doclists have been loaded. - ** Let nOther be the number of other phrases for which it is certain that - ** one or more tokens will not be deferred. - ** - ** Then, for each token, defer it if loading the doclist would result in - ** loading N or more overflow pages into memory, where N is computed as: - ** - ** (nMinEst + 4^nOther - 1) / (4^nOther) - */ - for(ii=0; iinOvfl) - ){ - pTC = &aTC[iTC]; - } - } - assert( pTC ); - - if( ii && pTC->nOvfl>=((nMinEst+(nLoad4/4)-1)/(nLoad4/4))*nDocSize ){ - /* The number of overflow pages to load for this (and therefore all - ** subsequent) tokens is greater than the estimated number of pages - ** that will be loaded if all subsequent tokens are deferred. - */ - Fts3PhraseToken *pToken = pTC->pToken; - rc = sqlite3Fts3DeferToken(pCsr, pToken, pTC->iCol); - fts3SegReaderCursorFree(pToken->pSegcsr); - pToken->pSegcsr = 0; - }else{ - /* Set nLoad4 to the value of (4^nOther) for the next iteration of the - ** for-loop. Except, limit the value to 2^24 to prevent it from - ** overflowing the 32-bit integer it is stored in. */ - if( ii<12 ) nLoad4 = nLoad4*4; - - if( ii==0 || pTC->pPhrase->nToken>1 ){ - /* Either this is the cheapest token in the entire query, or it is - ** part of a multi-token phrase. Either way, the entire doclist will - ** (eventually) be loaded into memory. It may as well be now. */ - Fts3PhraseToken *pToken = pTC->pToken; - int nList = 0; - char *pList = 0; - rc = fts3TermSelect(pTab, pToken, pTC->iCol, &nList, &pList); - assert( rc==SQLITE_OK || pList==0 ); - if( rc==SQLITE_OK ){ - int nCount; - fts3EvalPhraseMergeToken(pTab, pTC->pPhrase, pTC->iToken,pList,nList); - nCount = fts3DoclistCountDocids( - pTC->pPhrase->doclist.aAll, pTC->pPhrase->doclist.nAll - ); - if( ii==0 || nCountpToken = 0; - } - - return rc; -} - -/* -** This function is called from within the xFilter method. It initializes -** the full-text query currently stored in pCsr->pExpr. To iterate through -** the results of a query, the caller does: -** -** fts3EvalStart(pCsr); -** while( 1 ){ -** fts3EvalNext(pCsr); -** if( pCsr->bEof ) break; -** ... return row pCsr->iPrevId to the caller ... -** } -*/ -static int fts3EvalStart(Fts3Cursor *pCsr){ - Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab; - int rc = SQLITE_OK; - int nToken = 0; - int nOr = 0; - - /* Allocate a MultiSegReader for each token in the expression. */ - fts3EvalAllocateReaders(pCsr, pCsr->pExpr, &nToken, &nOr, &rc); - - /* Determine which, if any, tokens in the expression should be deferred. */ - if( rc==SQLITE_OK && nToken>1 && pTab->bHasStat ){ - Fts3TokenAndCost *aTC; - Fts3Expr **apOr; - aTC = (Fts3TokenAndCost *)sqlite3_malloc( - sizeof(Fts3TokenAndCost) * nToken - + sizeof(Fts3Expr *) * nOr * 2 - ); - apOr = (Fts3Expr **)&aTC[nToken]; - - if( !aTC ){ - rc = SQLITE_NOMEM; - }else{ - int ii; - Fts3TokenAndCost *pTC = aTC; - Fts3Expr **ppOr = apOr; - - fts3EvalTokenCosts(pCsr, 0, pCsr->pExpr, &pTC, &ppOr, &rc); - nToken = pTC-aTC; - nOr = ppOr-apOr; - - if( rc==SQLITE_OK ){ - rc = fts3EvalSelectDeferred(pCsr, 0, aTC, nToken); - for(ii=0; rc==SQLITE_OK && iipExpr, 1, &rc); - return rc; -} - -/* -** Invalidate the current position list for phrase pPhrase. -*/ -static void fts3EvalInvalidatePoslist(Fts3Phrase *pPhrase){ - if( pPhrase->doclist.bFreeList ){ - sqlite3_free(pPhrase->doclist.pList); - } - pPhrase->doclist.pList = 0; - pPhrase->doclist.nList = 0; - pPhrase->doclist.bFreeList = 0; -} - -/* -** This function is called to edit the position list associated with -** the phrase object passed as the fifth argument according to a NEAR -** condition. For example: -** -** abc NEAR/5 "def ghi" -** -** Parameter nNear is passed the NEAR distance of the expression (5 in -** the example above). When this function is called, *paPoslist points to -** the position list, and *pnToken is the number of phrase tokens in, the -** phrase on the other side of the NEAR operator to pPhrase. For example, -** if pPhrase refers to the "def ghi" phrase, then *paPoslist points to -** the position list associated with phrase "abc". -** -** All positions in the pPhrase position list that are not sufficiently -** close to a position in the *paPoslist position list are removed. If this -** leaves 0 positions, zero is returned. Otherwise, non-zero. -** -** Before returning, *paPoslist is set to point to the position lsit -** associated with pPhrase. And *pnToken is set to the number of tokens in -** pPhrase. -*/ -static int fts3EvalNearTrim( - int nNear, /* NEAR distance. As in "NEAR/nNear". */ - char *aTmp, /* Temporary space to use */ - char **paPoslist, /* IN/OUT: Position list */ - int *pnToken, /* IN/OUT: Tokens in phrase of *paPoslist */ - Fts3Phrase *pPhrase /* The phrase object to trim the doclist of */ -){ - int nParam1 = nNear + pPhrase->nToken; - int nParam2 = nNear + *pnToken; - int nNew; - char *p2; - char *pOut; - int res; - - assert( pPhrase->doclist.pList ); - - p2 = pOut = pPhrase->doclist.pList; - res = fts3PoslistNearMerge( - &pOut, aTmp, nParam1, nParam2, paPoslist, &p2 - ); - if( res ){ - nNew = (pOut - pPhrase->doclist.pList) - 1; - assert( pPhrase->doclist.pList[nNew]=='\0' ); - assert( nNew<=pPhrase->doclist.nList && nNew>0 ); - memset(&pPhrase->doclist.pList[nNew], 0, pPhrase->doclist.nList - nNew); - pPhrase->doclist.nList = nNew; - *paPoslist = pPhrase->doclist.pList; - *pnToken = pPhrase->nToken; - } - - return res; -} - -/* -** This function is a no-op if *pRc is other than SQLITE_OK when it is called. -** Otherwise, it advances the expression passed as the second argument to -** point to the next matching row in the database. Expressions iterate through -** matching rows in docid order. Ascending order if Fts3Cursor.bDesc is zero, -** or descending if it is non-zero. -** -** If an error occurs, *pRc is set to an SQLite error code. Otherwise, if -** successful, the following variables in pExpr are set: -** -** Fts3Expr.bEof (non-zero if EOF - there is no next row) -** Fts3Expr.iDocid (valid if bEof==0. The docid of the next row) -** -** If the expression is of type FTSQUERY_PHRASE, and the expression is not -** at EOF, then the following variables are populated with the position list -** for the phrase for the visited row: -** -** FTs3Expr.pPhrase->doclist.nList (length of pList in bytes) -** FTs3Expr.pPhrase->doclist.pList (pointer to position list) -** -** It says above that this function advances the expression to the next -** matching row. This is usually true, but there are the following exceptions: -** -** 1. Deferred tokens are not taken into account. If a phrase consists -** entirely of deferred tokens, it is assumed to match every row in -** the db. In this case the position-list is not populated at all. -** -** Or, if a phrase contains one or more deferred tokens and one or -** more non-deferred tokens, then the expression is advanced to the -** next possible match, considering only non-deferred tokens. In other -** words, if the phrase is "A B C", and "B" is deferred, the expression -** is advanced to the next row that contains an instance of "A * C", -** where "*" may match any single token. The position list in this case -** is populated as for "A * C" before returning. -** -** 2. NEAR is treated as AND. If the expression is "x NEAR y", it is -** advanced to point to the next row that matches "x AND y". -** -** See fts3EvalTestDeferredAndNear() for details on testing if a row is -** really a match, taking into account deferred tokens and NEAR operators. -*/ -static void fts3EvalNextRow( - Fts3Cursor *pCsr, /* FTS Cursor handle */ - Fts3Expr *pExpr, /* Expr. to advance to next matching row */ - int *pRc /* IN/OUT: Error code */ -){ - if( *pRc==SQLITE_OK ){ - int bDescDoclist = pCsr->bDesc; /* Used by DOCID_CMP() macro */ - assert( pExpr->bEof==0 ); - pExpr->bStart = 1; - - switch( pExpr->eType ){ - case FTSQUERY_NEAR: - case FTSQUERY_AND: { - Fts3Expr *pLeft = pExpr->pLeft; - Fts3Expr *pRight = pExpr->pRight; - assert( !pLeft->bDeferred || !pRight->bDeferred ); - - if( pLeft->bDeferred ){ - /* LHS is entirely deferred. So we assume it matches every row. - ** Advance the RHS iterator to find the next row visited. */ - fts3EvalNextRow(pCsr, pRight, pRc); - pExpr->iDocid = pRight->iDocid; - pExpr->bEof = pRight->bEof; - }else if( pRight->bDeferred ){ - /* RHS is entirely deferred. So we assume it matches every row. - ** Advance the LHS iterator to find the next row visited. */ - fts3EvalNextRow(pCsr, pLeft, pRc); - pExpr->iDocid = pLeft->iDocid; - pExpr->bEof = pLeft->bEof; - }else{ - /* Neither the RHS or LHS are deferred. */ - fts3EvalNextRow(pCsr, pLeft, pRc); - fts3EvalNextRow(pCsr, pRight, pRc); - while( !pLeft->bEof && !pRight->bEof && *pRc==SQLITE_OK ){ - sqlite3_int64 iDiff = DOCID_CMP(pLeft->iDocid, pRight->iDocid); - if( iDiff==0 ) break; - if( iDiff<0 ){ - fts3EvalNextRow(pCsr, pLeft, pRc); - }else{ - fts3EvalNextRow(pCsr, pRight, pRc); - } - } - pExpr->iDocid = pLeft->iDocid; - pExpr->bEof = (pLeft->bEof || pRight->bEof); - } - break; - } - - case FTSQUERY_OR: { - Fts3Expr *pLeft = pExpr->pLeft; - Fts3Expr *pRight = pExpr->pRight; - sqlite3_int64 iCmp = DOCID_CMP(pLeft->iDocid, pRight->iDocid); - - assert( pLeft->bStart || pLeft->iDocid==pRight->iDocid ); - assert( pRight->bStart || pLeft->iDocid==pRight->iDocid ); - - if( pRight->bEof || (pLeft->bEof==0 && iCmp<0) ){ - fts3EvalNextRow(pCsr, pLeft, pRc); - }else if( pLeft->bEof || (pRight->bEof==0 && iCmp>0) ){ - fts3EvalNextRow(pCsr, pRight, pRc); - }else{ - fts3EvalNextRow(pCsr, pLeft, pRc); - fts3EvalNextRow(pCsr, pRight, pRc); - } - - pExpr->bEof = (pLeft->bEof && pRight->bEof); - iCmp = DOCID_CMP(pLeft->iDocid, pRight->iDocid); - if( pRight->bEof || (pLeft->bEof==0 && iCmp<0) ){ - pExpr->iDocid = pLeft->iDocid; - }else{ - pExpr->iDocid = pRight->iDocid; - } - - break; - } - - case FTSQUERY_NOT: { - Fts3Expr *pLeft = pExpr->pLeft; - Fts3Expr *pRight = pExpr->pRight; - - if( pRight->bStart==0 ){ - fts3EvalNextRow(pCsr, pRight, pRc); - assert( *pRc!=SQLITE_OK || pRight->bStart ); - } - - fts3EvalNextRow(pCsr, pLeft, pRc); - if( pLeft->bEof==0 ){ - while( !*pRc - && !pRight->bEof - && DOCID_CMP(pLeft->iDocid, pRight->iDocid)>0 - ){ - fts3EvalNextRow(pCsr, pRight, pRc); - } - } - pExpr->iDocid = pLeft->iDocid; - pExpr->bEof = pLeft->bEof; - break; - } - - default: { - Fts3Phrase *pPhrase = pExpr->pPhrase; - fts3EvalInvalidatePoslist(pPhrase); - *pRc = fts3EvalPhraseNext(pCsr, pPhrase, &pExpr->bEof); - pExpr->iDocid = pPhrase->doclist.iDocid; - break; - } - } - } -} - -/* -** If *pRc is not SQLITE_OK, or if pExpr is not the root node of a NEAR -** cluster, then this function returns 1 immediately. -** -** Otherwise, it checks if the current row really does match the NEAR -** expression, using the data currently stored in the position lists -** (Fts3Expr->pPhrase.doclist.pList/nList) for each phrase in the expression. -** -** If the current row is a match, the position list associated with each -** phrase in the NEAR expression is edited in place to contain only those -** phrase instances sufficiently close to their peers to satisfy all NEAR -** constraints. In this case it returns 1. If the NEAR expression does not -** match the current row, 0 is returned. The position lists may or may not -** be edited if 0 is returned. -*/ -static int fts3EvalNearTest(Fts3Expr *pExpr, int *pRc){ - int res = 1; - - /* The following block runs if pExpr is the root of a NEAR query. - ** For example, the query: - ** - ** "w" NEAR "x" NEAR "y" NEAR "z" - ** - ** which is represented in tree form as: - ** - ** | - ** +--NEAR--+ <-- root of NEAR query - ** | | - ** +--NEAR--+ "z" - ** | | - ** +--NEAR--+ "y" - ** | | - ** "w" "x" - ** - ** The right-hand child of a NEAR node is always a phrase. The - ** left-hand child may be either a phrase or a NEAR node. There are - ** no exceptions to this - it's the way the parser in fts3_expr.c works. - */ - if( *pRc==SQLITE_OK - && pExpr->eType==FTSQUERY_NEAR - && pExpr->bEof==0 - && (pExpr->pParent==0 || pExpr->pParent->eType!=FTSQUERY_NEAR) - ){ - Fts3Expr *p; - int nTmp = 0; /* Bytes of temp space */ - char *aTmp; /* Temp space for PoslistNearMerge() */ - - /* Allocate temporary working space. */ - for(p=pExpr; p->pLeft; p=p->pLeft){ - nTmp += p->pRight->pPhrase->doclist.nList; - } - nTmp += p->pPhrase->doclist.nList; - aTmp = sqlite3_malloc(nTmp*2); - if( !aTmp ){ - *pRc = SQLITE_NOMEM; - res = 0; - }else{ - char *aPoslist = p->pPhrase->doclist.pList; - int nToken = p->pPhrase->nToken; - - for(p=p->pParent;res && p && p->eType==FTSQUERY_NEAR; p=p->pParent){ - Fts3Phrase *pPhrase = p->pRight->pPhrase; - int nNear = p->nNear; - res = fts3EvalNearTrim(nNear, aTmp, &aPoslist, &nToken, pPhrase); - } - - aPoslist = pExpr->pRight->pPhrase->doclist.pList; - nToken = pExpr->pRight->pPhrase->nToken; - for(p=pExpr->pLeft; p && res; p=p->pLeft){ - int nNear; - Fts3Phrase *pPhrase; - assert( p->pParent && p->pParent->pLeft==p ); - nNear = p->pParent->nNear; - pPhrase = ( - p->eType==FTSQUERY_NEAR ? p->pRight->pPhrase : p->pPhrase - ); - res = fts3EvalNearTrim(nNear, aTmp, &aPoslist, &nToken, pPhrase); - } - } - - sqlite3_free(aTmp); - } - - return res; -} - -/* -** This function is a helper function for fts3EvalTestDeferredAndNear(). -** Assuming no error occurs or has occurred, It returns non-zero if the -** expression passed as the second argument matches the row that pCsr -** currently points to, or zero if it does not. -** -** If *pRc is not SQLITE_OK when this function is called, it is a no-op. -** If an error occurs during execution of this function, *pRc is set to -** the appropriate SQLite error code. In this case the returned value is -** undefined. -*/ -static int fts3EvalTestExpr( - Fts3Cursor *pCsr, /* FTS cursor handle */ - Fts3Expr *pExpr, /* Expr to test. May or may not be root. */ - int *pRc /* IN/OUT: Error code */ -){ - int bHit = 1; /* Return value */ - if( *pRc==SQLITE_OK ){ - switch( pExpr->eType ){ - case FTSQUERY_NEAR: - case FTSQUERY_AND: - bHit = ( - fts3EvalTestExpr(pCsr, pExpr->pLeft, pRc) - && fts3EvalTestExpr(pCsr, pExpr->pRight, pRc) - && fts3EvalNearTest(pExpr, pRc) - ); - - /* If the NEAR expression does not match any rows, zero the doclist for - ** all phrases involved in the NEAR. This is because the snippet(), - ** offsets() and matchinfo() functions are not supposed to recognize - ** any instances of phrases that are part of unmatched NEAR queries. - ** For example if this expression: - ** - ** ... MATCH 'a OR (b NEAR c)' - ** - ** is matched against a row containing: - ** - ** 'a b d e' - ** - ** then any snippet() should ony highlight the "a" term, not the "b" - ** (as "b" is part of a non-matching NEAR clause). - */ - if( bHit==0 - && pExpr->eType==FTSQUERY_NEAR - && (pExpr->pParent==0 || pExpr->pParent->eType!=FTSQUERY_NEAR) - ){ - Fts3Expr *p; - for(p=pExpr; p->pPhrase==0; p=p->pLeft){ - if( p->pRight->iDocid==pCsr->iPrevId ){ - fts3EvalInvalidatePoslist(p->pRight->pPhrase); - } - } - if( p->iDocid==pCsr->iPrevId ){ - fts3EvalInvalidatePoslist(p->pPhrase); - } - } - - break; - - case FTSQUERY_OR: { - int bHit1 = fts3EvalTestExpr(pCsr, pExpr->pLeft, pRc); - int bHit2 = fts3EvalTestExpr(pCsr, pExpr->pRight, pRc); - bHit = bHit1 || bHit2; - break; - } - - case FTSQUERY_NOT: - bHit = ( - fts3EvalTestExpr(pCsr, pExpr->pLeft, pRc) - && !fts3EvalTestExpr(pCsr, pExpr->pRight, pRc) - ); - break; - - default: { - if( pCsr->pDeferred - && (pExpr->iDocid==pCsr->iPrevId || pExpr->bDeferred) - ){ - Fts3Phrase *pPhrase = pExpr->pPhrase; - assert( pExpr->bDeferred || pPhrase->doclist.bFreeList==0 ); - if( pExpr->bDeferred ){ - fts3EvalInvalidatePoslist(pPhrase); - } - *pRc = fts3EvalDeferredPhrase(pCsr, pPhrase); - bHit = (pPhrase->doclist.pList!=0); - pExpr->iDocid = pCsr->iPrevId; - }else{ - bHit = (pExpr->bEof==0 && pExpr->iDocid==pCsr->iPrevId); - } - break; - } - } - } - return bHit; -} - -/* -** This function is called as the second part of each xNext operation when -** iterating through the results of a full-text query. At this point the -** cursor points to a row that matches the query expression, with the -** following caveats: -** -** * Up until this point, "NEAR" operators in the expression have been -** treated as "AND". -** -** * Deferred tokens have not yet been considered. -** -** If *pRc is not SQLITE_OK when this function is called, it immediately -** returns 0. Otherwise, it tests whether or not after considering NEAR -** operators and deferred tokens the current row is still a match for the -** expression. It returns 1 if both of the following are true: -** -** 1. *pRc is SQLITE_OK when this function returns, and -** -** 2. After scanning the current FTS table row for the deferred tokens, -** it is determined that the row does *not* match the query. -** -** Or, if no error occurs and it seems the current row does match the FTS -** query, return 0. -*/ -static int fts3EvalTestDeferredAndNear(Fts3Cursor *pCsr, int *pRc){ - int rc = *pRc; - int bMiss = 0; - if( rc==SQLITE_OK ){ - - /* If there are one or more deferred tokens, load the current row into - ** memory and scan it to determine the position list for each deferred - ** token. Then, see if this row is really a match, considering deferred - ** tokens and NEAR operators (neither of which were taken into account - ** earlier, by fts3EvalNextRow()). - */ - if( pCsr->pDeferred ){ - rc = fts3CursorSeek(0, pCsr); - if( rc==SQLITE_OK ){ - rc = sqlite3Fts3CacheDeferredDoclists(pCsr); - } - } - bMiss = (0==fts3EvalTestExpr(pCsr, pCsr->pExpr, &rc)); - - /* Free the position-lists accumulated for each deferred token above. */ - sqlite3Fts3FreeDeferredDoclists(pCsr); - *pRc = rc; - } - return (rc==SQLITE_OK && bMiss); -} - -/* -** Advance to the next document that matches the FTS expression in -** Fts3Cursor.pExpr. -*/ -static int fts3EvalNext(Fts3Cursor *pCsr){ - int rc = SQLITE_OK; /* Return Code */ - Fts3Expr *pExpr = pCsr->pExpr; - assert( pCsr->isEof==0 ); - if( pExpr==0 ){ - pCsr->isEof = 1; - }else{ - do { - if( pCsr->isRequireSeek==0 ){ - sqlite3_reset(pCsr->pStmt); - } - assert( sqlite3_data_count(pCsr->pStmt)==0 ); - fts3EvalNextRow(pCsr, pExpr, &rc); - pCsr->isEof = pExpr->bEof; - pCsr->isRequireSeek = 1; - pCsr->isMatchinfoNeeded = 1; - pCsr->iPrevId = pExpr->iDocid; - }while( pCsr->isEof==0 && fts3EvalTestDeferredAndNear(pCsr, &rc) ); - } - return rc; -} - -/* -** Restart interation for expression pExpr so that the next call to -** fts3EvalNext() visits the first row. Do not allow incremental -** loading or merging of phrase doclists for this iteration. -** -** If *pRc is other than SQLITE_OK when this function is called, it is -** a no-op. If an error occurs within this function, *pRc is set to an -** SQLite error code before returning. -*/ -static void fts3EvalRestart( - Fts3Cursor *pCsr, - Fts3Expr *pExpr, - int *pRc -){ - if( pExpr && *pRc==SQLITE_OK ){ - Fts3Phrase *pPhrase = pExpr->pPhrase; - - if( pPhrase ){ - fts3EvalInvalidatePoslist(pPhrase); - if( pPhrase->bIncr ){ - assert( pPhrase->nToken==1 ); - assert( pPhrase->aToken[0].pSegcsr ); - sqlite3Fts3MsrIncrRestart(pPhrase->aToken[0].pSegcsr); - *pRc = fts3EvalPhraseStart(pCsr, 0, pPhrase); - } - - pPhrase->doclist.pNextDocid = 0; - pPhrase->doclist.iDocid = 0; - } - - pExpr->iDocid = 0; - pExpr->bEof = 0; - pExpr->bStart = 0; - - fts3EvalRestart(pCsr, pExpr->pLeft, pRc); - fts3EvalRestart(pCsr, pExpr->pRight, pRc); - } -} - -/* -** After allocating the Fts3Expr.aMI[] array for each phrase in the -** expression rooted at pExpr, the cursor iterates through all rows matched -** by pExpr, calling this function for each row. This function increments -** the values in Fts3Expr.aMI[] according to the position-list currently -** found in Fts3Expr.pPhrase->doclist.pList for each of the phrase -** expression nodes. -*/ -static void fts3EvalUpdateCounts(Fts3Expr *pExpr){ - if( pExpr ){ - Fts3Phrase *pPhrase = pExpr->pPhrase; - if( pPhrase && pPhrase->doclist.pList ){ - int iCol = 0; - char *p = pPhrase->doclist.pList; - - assert( *p ); - while( 1 ){ - u8 c = 0; - int iCnt = 0; - while( 0xFE & (*p | c) ){ - if( (c&0x80)==0 ) iCnt++; - c = *p++ & 0x80; - } - - /* aMI[iCol*3 + 1] = Number of occurrences - ** aMI[iCol*3 + 2] = Number of rows containing at least one instance - */ - pExpr->aMI[iCol*3 + 1] += iCnt; - pExpr->aMI[iCol*3 + 2] += (iCnt>0); - if( *p==0x00 ) break; - p++; - p += sqlite3Fts3GetVarint32(p, &iCol); - } - } - - fts3EvalUpdateCounts(pExpr->pLeft); - fts3EvalUpdateCounts(pExpr->pRight); - } -} - -/* -** Expression pExpr must be of type FTSQUERY_PHRASE. -** -** If it is not already allocated and populated, this function allocates and -** populates the Fts3Expr.aMI[] array for expression pExpr. If pExpr is part -** of a NEAR expression, then it also allocates and populates the same array -** for all other phrases that are part of the NEAR expression. -** -** SQLITE_OK is returned if the aMI[] array is successfully allocated and -** populated. Otherwise, if an error occurs, an SQLite error code is returned. -*/ -static int fts3EvalGatherStats( - Fts3Cursor *pCsr, /* Cursor object */ - Fts3Expr *pExpr /* FTSQUERY_PHRASE expression */ -){ - int rc = SQLITE_OK; /* Return code */ - - assert( pExpr->eType==FTSQUERY_PHRASE ); - if( pExpr->aMI==0 ){ - Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab; - Fts3Expr *pRoot; /* Root of NEAR expression */ - Fts3Expr *p; /* Iterator used for several purposes */ - - sqlite3_int64 iPrevId = pCsr->iPrevId; - sqlite3_int64 iDocid; - u8 bEof; - - /* Find the root of the NEAR expression */ - pRoot = pExpr; - while( pRoot->pParent && pRoot->pParent->eType==FTSQUERY_NEAR ){ - pRoot = pRoot->pParent; - } - iDocid = pRoot->iDocid; - bEof = pRoot->bEof; - assert( pRoot->bStart ); - - /* Allocate space for the aMSI[] array of each FTSQUERY_PHRASE node */ - for(p=pRoot; p; p=p->pLeft){ - Fts3Expr *pE = (p->eType==FTSQUERY_PHRASE?p:p->pRight); - assert( pE->aMI==0 ); - pE->aMI = (u32 *)sqlite3_malloc(pTab->nColumn * 3 * sizeof(u32)); - if( !pE->aMI ) return SQLITE_NOMEM; - memset(pE->aMI, 0, pTab->nColumn * 3 * sizeof(u32)); - } - - fts3EvalRestart(pCsr, pRoot, &rc); - - while( pCsr->isEof==0 && rc==SQLITE_OK ){ - - do { - /* Ensure the %_content statement is reset. */ - if( pCsr->isRequireSeek==0 ) sqlite3_reset(pCsr->pStmt); - assert( sqlite3_data_count(pCsr->pStmt)==0 ); - - /* Advance to the next document */ - fts3EvalNextRow(pCsr, pRoot, &rc); - pCsr->isEof = pRoot->bEof; - pCsr->isRequireSeek = 1; - pCsr->isMatchinfoNeeded = 1; - pCsr->iPrevId = pRoot->iDocid; - }while( pCsr->isEof==0 - && pRoot->eType==FTSQUERY_NEAR - && fts3EvalTestDeferredAndNear(pCsr, &rc) - ); - - if( rc==SQLITE_OK && pCsr->isEof==0 ){ - fts3EvalUpdateCounts(pRoot); - } - } - - pCsr->isEof = 0; - pCsr->iPrevId = iPrevId; - - if( bEof ){ - pRoot->bEof = bEof; - }else{ - /* Caution: pRoot may iterate through docids in ascending or descending - ** order. For this reason, even though it seems more defensive, the - ** do loop can not be written: - ** - ** do {...} while( pRoot->iDocidbEof==0 ); - }while( pRoot->iDocid!=iDocid && rc==SQLITE_OK ); - fts3EvalTestDeferredAndNear(pCsr, &rc); - } - } - return rc; -} - -/* -** This function is used by the matchinfo() module to query a phrase -** expression node for the following information: -** -** 1. The total number of occurrences of the phrase in each column of -** the FTS table (considering all rows), and -** -** 2. For each column, the number of rows in the table for which the -** column contains at least one instance of the phrase. -** -** If no error occurs, SQLITE_OK is returned and the values for each column -** written into the array aiOut as follows: -** -** aiOut[iCol*3 + 1] = Number of occurrences -** aiOut[iCol*3 + 2] = Number of rows containing at least one instance -** -** Caveats: -** -** * If a phrase consists entirely of deferred tokens, then all output -** values are set to the number of documents in the table. In other -** words we assume that very common tokens occur exactly once in each -** column of each row of the table. -** -** * If a phrase contains some deferred tokens (and some non-deferred -** tokens), count the potential occurrence identified by considering -** the non-deferred tokens instead of actual phrase occurrences. -** -** * If the phrase is part of a NEAR expression, then only phrase instances -** that meet the NEAR constraint are included in the counts. -*/ -int sqlite3Fts3EvalPhraseStats( - Fts3Cursor *pCsr, /* FTS cursor handle */ - Fts3Expr *pExpr, /* Phrase expression */ - u32 *aiOut /* Array to write results into (see above) */ -){ - Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab; - int rc = SQLITE_OK; - int iCol; - - if( pExpr->bDeferred && pExpr->pParent->eType!=FTSQUERY_NEAR ){ - assert( pCsr->nDoc>0 ); - for(iCol=0; iColnColumn; iCol++){ - aiOut[iCol*3 + 1] = (u32)pCsr->nDoc; - aiOut[iCol*3 + 2] = (u32)pCsr->nDoc; - } - }else{ - rc = fts3EvalGatherStats(pCsr, pExpr); - if( rc==SQLITE_OK ){ - assert( pExpr->aMI ); - for(iCol=0; iColnColumn; iCol++){ - aiOut[iCol*3 + 1] = pExpr->aMI[iCol*3 + 1]; - aiOut[iCol*3 + 2] = pExpr->aMI[iCol*3 + 2]; - } - } - } - - return rc; -} - -/* -** The expression pExpr passed as the second argument to this function -** must be of type FTSQUERY_PHRASE. -** -** The returned value is either NULL or a pointer to a buffer containing -** a position-list indicating the occurrences of the phrase in column iCol -** of the current row. -** -** More specifically, the returned buffer contains 1 varint for each -** occurence of the phrase in the column, stored using the normal (delta+2) -** compression and is terminated by either an 0x01 or 0x00 byte. For example, -** if the requested column contains "a b X c d X X" and the position-list -** for 'X' is requested, the buffer returned may contain: -** -** 0x04 0x05 0x03 0x01 or 0x04 0x05 0x03 0x00 -** -** This function works regardless of whether or not the phrase is deferred, -** incremental, or neither. -*/ -char *sqlite3Fts3EvalPhrasePoslist( - Fts3Cursor *pCsr, /* FTS3 cursor object */ - Fts3Expr *pExpr, /* Phrase to return doclist for */ - int iCol /* Column to return position list for */ -){ - Fts3Phrase *pPhrase = pExpr->pPhrase; - Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab; - char *pIter = pPhrase->doclist.pList; - int iThis; - - assert( iCol>=0 && iColnColumn ); - if( !pIter - || pExpr->bEof - || pExpr->iDocid!=pCsr->iPrevId - || (pPhrase->iColumnnColumn && pPhrase->iColumn!=iCol) - ){ - return 0; - } - - assert( pPhrase->doclist.nList>0 ); - if( *pIter==0x01 ){ - pIter++; - pIter += sqlite3Fts3GetVarint32(pIter, &iThis); - }else{ - iThis = 0; - } - while( iThisdoclist, and -** * any Fts3MultiSegReader objects held by phrase tokens. -*/ -void sqlite3Fts3EvalPhraseCleanup(Fts3Phrase *pPhrase){ - if( pPhrase ){ - int i; - sqlite3_free(pPhrase->doclist.aAll); - fts3EvalInvalidatePoslist(pPhrase); - memset(&pPhrase->doclist, 0, sizeof(Fts3Doclist)); - for(i=0; inToken; i++){ - fts3SegReaderCursorFree(pPhrase->aToken[i].pSegcsr); - pPhrase->aToken[i].pSegcsr = 0; - } - } -} - -/* -** Return SQLITE_CORRUPT_VTAB. -*/ -#ifdef SQLITE_DEBUG -int sqlite3Fts3Corrupt(){ - return SQLITE_CORRUPT_VTAB; -} -#endif - -#if !SQLITE_CORE -/* -** Initialize API pointer table, if required. -*/ -int sqlite3_extension_init( - sqlite3 *db, - char **pzErrMsg, - const sqlite3_api_routines *pApi -){ - SQLITE_EXTENSION_INIT2(pApi) - return sqlite3Fts3Init(db); -} -#endif - -#endif diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3.h deleted file mode 100644 index 7d7d615d74..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3.h +++ /dev/null @@ -1,26 +0,0 @@ -/* -** 2006 Oct 10 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This header file is used by programs that want to link against the -** FTS3 library. All it does is declare the sqlite3Fts3Init() interface. -*/ -#include "sqlite3.h" - -#ifdef __cplusplus -extern "C" { -#endif /* __cplusplus */ - -int sqlite3Fts3Init(sqlite3 *db); - -#ifdef __cplusplus -} /* extern "C" */ -#endif /* __cplusplus */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3Int.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3Int.h deleted file mode 100644 index d0fff453e9..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3Int.h +++ /dev/null @@ -1,523 +0,0 @@ -/* -** 2009 Nov 12 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -*/ -#ifndef _FTSINT_H -#define _FTSINT_H - -#if !defined(NDEBUG) && !defined(SQLITE_DEBUG) -# define NDEBUG 1 -#endif - -/* -** FTS4 is really an extension for FTS3. It is enabled using the -** SQLITE_ENABLE_FTS3 macro. But to avoid confusion we also all -** the SQLITE_ENABLE_FTS4 macro to serve as an alisse for SQLITE_ENABLE_FTS3. -*/ -#if defined(SQLITE_ENABLE_FTS4) && !defined(SQLITE_ENABLE_FTS3) -# define SQLITE_ENABLE_FTS3 -#endif - -#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) - -/* If not building as part of the core, include sqlite3ext.h. */ -#ifndef SQLITE_CORE -# include "sqlite3ext.h" -extern const sqlite3_api_routines *sqlite3_api; -#endif - -#include "sqlite3.h" -#include "fts3_tokenizer.h" -#include "fts3_hash.h" - -/* -** This constant controls how often segments are merged. Once there are -** FTS3_MERGE_COUNT segments of level N, they are merged into a single -** segment of level N+1. -*/ -#define FTS3_MERGE_COUNT 16 - -/* -** This is the maximum amount of data (in bytes) to store in the -** Fts3Table.pendingTerms hash table. Normally, the hash table is -** populated as documents are inserted/updated/deleted in a transaction -** and used to create a new segment when the transaction is committed. -** However if this limit is reached midway through a transaction, a new -** segment is created and the hash table cleared immediately. -*/ -#define FTS3_MAX_PENDING_DATA (1*1024*1024) - -/* -** Macro to return the number of elements in an array. SQLite has a -** similar macro called ArraySize(). Use a different name to avoid -** a collision when building an amalgamation with built-in FTS3. -*/ -#define SizeofArray(X) ((int)(sizeof(X)/sizeof(X[0]))) - - -#ifndef MIN -# define MIN(x,y) ((x)<(y)?(x):(y)) -#endif - -/* -** Maximum length of a varint encoded integer. The varint format is different -** from that used by SQLite, so the maximum length is 10, not 9. -*/ -#define FTS3_VARINT_MAX 10 - -/* -** FTS4 virtual tables may maintain multiple indexes - one index of all terms -** in the document set and zero or more prefix indexes. All indexes are stored -** as one or more b+-trees in the %_segments and %_segdir tables. -** -** It is possible to determine which index a b+-tree belongs to based on the -** value stored in the "%_segdir.level" column. Given this value L, the index -** that the b+-tree belongs to is (L<<10). In other words, all b+-trees with -** level values between 0 and 1023 (inclusive) belong to index 0, all levels -** between 1024 and 2047 to index 1, and so on. -** -** It is considered impossible for an index to use more than 1024 levels. In -** theory though this may happen, but only after at least -** (FTS3_MERGE_COUNT^1024) separate flushes of the pending-terms tables. -*/ -#define FTS3_SEGDIR_MAXLEVEL 1024 -#define FTS3_SEGDIR_MAXLEVEL_STR "1024" - -/* -** The testcase() macro is only used by the amalgamation. If undefined, -** make it a no-op. -*/ -#ifndef testcase -# define testcase(X) -#endif - -/* -** Terminator values for position-lists and column-lists. -*/ -#define POS_COLUMN (1) /* Column-list terminator */ -#define POS_END (0) /* Position-list terminator */ - -/* -** This section provides definitions to allow the -** FTS3 extension to be compiled outside of the -** amalgamation. -*/ -#ifndef SQLITE_AMALGAMATION -/* -** Macros indicating that conditional expressions are always true or -** false. -*/ -#ifdef SQLITE_COVERAGE_TEST -# define ALWAYS(x) (1) -# define NEVER(X) (0) -#else -# define ALWAYS(x) (x) -# define NEVER(X) (x) -#endif - -/* -** Internal types used by SQLite. -*/ -typedef unsigned char u8; /* 1-byte (or larger) unsigned integer */ -typedef short int i16; /* 2-byte (or larger) signed integer */ -typedef unsigned int u32; /* 4-byte unsigned integer */ -typedef sqlite3_uint64 u64; /* 8-byte unsigned integer */ - -/* -** Macro used to suppress compiler warnings for unused parameters. -*/ -#define UNUSED_PARAMETER(x) (void)(x) - -/* -** Activate assert() only if SQLITE_TEST is enabled. -*/ -#if !defined(NDEBUG) && !defined(SQLITE_DEBUG) -# define NDEBUG 1 -#endif - -/* -** The TESTONLY macro is used to enclose variable declarations or -** other bits of code that are needed to support the arguments -** within testcase() and assert() macros. -*/ -#if defined(SQLITE_DEBUG) || defined(SQLITE_COVERAGE_TEST) -# define TESTONLY(X) X -#else -# define TESTONLY(X) -#endif - -#endif /* SQLITE_AMALGAMATION */ - -#ifdef SQLITE_DEBUG -int sqlite3Fts3Corrupt(void); -# define FTS_CORRUPT_VTAB sqlite3Fts3Corrupt() -#else -# define FTS_CORRUPT_VTAB SQLITE_CORRUPT_VTAB -#endif - -typedef struct Fts3Table Fts3Table; -typedef struct Fts3Cursor Fts3Cursor; -typedef struct Fts3Expr Fts3Expr; -typedef struct Fts3Phrase Fts3Phrase; -typedef struct Fts3PhraseToken Fts3PhraseToken; - -typedef struct Fts3Doclist Fts3Doclist; -typedef struct Fts3SegFilter Fts3SegFilter; -typedef struct Fts3DeferredToken Fts3DeferredToken; -typedef struct Fts3SegReader Fts3SegReader; -typedef struct Fts3MultiSegReader Fts3MultiSegReader; - -/* -** A connection to a fulltext index is an instance of the following -** structure. The xCreate and xConnect methods create an instance -** of this structure and xDestroy and xDisconnect free that instance. -** All other methods receive a pointer to the structure as one of their -** arguments. -*/ -struct Fts3Table { - sqlite3_vtab base; /* Base class used by SQLite core */ - sqlite3 *db; /* The database connection */ - const char *zDb; /* logical database name */ - const char *zName; /* virtual table name */ - int nColumn; /* number of named columns in virtual table */ - char **azColumn; /* column names. malloced */ - sqlite3_tokenizer *pTokenizer; /* tokenizer for inserts and queries */ - char *zContentTbl; /* content=xxx option, or NULL */ - - /* Precompiled statements used by the implementation. Each of these - ** statements is run and reset within a single virtual table API call. - */ - sqlite3_stmt *aStmt[27]; - - char *zReadExprlist; - char *zWriteExprlist; - - int nNodeSize; /* Soft limit for node size */ - u8 bHasStat; /* True if %_stat table exists */ - u8 bHasDocsize; /* True if %_docsize table exists */ - u8 bDescIdx; /* True if doclists are in reverse order */ - int nPgsz; /* Page size for host database */ - char *zSegmentsTbl; /* Name of %_segments table */ - sqlite3_blob *pSegments; /* Blob handle open on %_segments table */ - - /* TODO: Fix the first paragraph of this comment. - ** - ** The following hash table is used to buffer pending index updates during - ** transactions. Variable nPendingData estimates the memory size of the - ** pending data, including hash table overhead, but not malloc overhead. - ** When nPendingData exceeds nMaxPendingData, the buffer is flushed - ** automatically. Variable iPrevDocid is the docid of the most recently - ** inserted record. - ** - ** A single FTS4 table may have multiple full-text indexes. For each index - ** there is an entry in the aIndex[] array. Index 0 is an index of all the - ** terms that appear in the document set. Each subsequent index in aIndex[] - ** is an index of prefixes of a specific length. - */ - int nIndex; /* Size of aIndex[] */ - struct Fts3Index { - int nPrefix; /* Prefix length (0 for main terms index) */ - Fts3Hash hPending; /* Pending terms table for this index */ - } *aIndex; - int nMaxPendingData; /* Max pending data before flush to disk */ - int nPendingData; /* Current bytes of pending data */ - sqlite_int64 iPrevDocid; /* Docid of most recently inserted document */ - -#if defined(SQLITE_DEBUG) || defined(SQLITE_COVERAGE_TEST) - /* State variables used for validating that the transaction control - ** methods of the virtual table are called at appropriate times. These - ** values do not contribution to the FTS computation; they are used for - ** verifying the SQLite core. - */ - int inTransaction; /* True after xBegin but before xCommit/xRollback */ - int mxSavepoint; /* Largest valid xSavepoint integer */ -#endif -}; - -/* -** When the core wants to read from the virtual table, it creates a -** virtual table cursor (an instance of the following structure) using -** the xOpen method. Cursors are destroyed using the xClose method. -*/ -struct Fts3Cursor { - sqlite3_vtab_cursor base; /* Base class used by SQLite core */ - i16 eSearch; /* Search strategy (see below) */ - u8 isEof; /* True if at End Of Results */ - u8 isRequireSeek; /* True if must seek pStmt to %_content row */ - sqlite3_stmt *pStmt; /* Prepared statement in use by the cursor */ - Fts3Expr *pExpr; /* Parsed MATCH query string */ - int nPhrase; /* Number of matchable phrases in query */ - Fts3DeferredToken *pDeferred; /* Deferred search tokens, if any */ - sqlite3_int64 iPrevId; /* Previous id read from aDoclist */ - char *pNextId; /* Pointer into the body of aDoclist */ - char *aDoclist; /* List of docids for full-text queries */ - int nDoclist; /* Size of buffer at aDoclist */ - u8 bDesc; /* True to sort in descending order */ - int eEvalmode; /* An FTS3_EVAL_XX constant */ - int nRowAvg; /* Average size of database rows, in pages */ - sqlite3_int64 nDoc; /* Documents in table */ - - int isMatchinfoNeeded; /* True when aMatchinfo[] needs filling in */ - u32 *aMatchinfo; /* Information about most recent match */ - int nMatchinfo; /* Number of elements in aMatchinfo[] */ - char *zMatchinfo; /* Matchinfo specification */ -}; - -#define FTS3_EVAL_FILTER 0 -#define FTS3_EVAL_NEXT 1 -#define FTS3_EVAL_MATCHINFO 2 - -/* -** The Fts3Cursor.eSearch member is always set to one of the following. -** Actualy, Fts3Cursor.eSearch can be greater than or equal to -** FTS3_FULLTEXT_SEARCH. If so, then Fts3Cursor.eSearch - 2 is the index -** of the column to be searched. For example, in -** -** CREATE VIRTUAL TABLE ex1 USING fts3(a,b,c,d); -** SELECT docid FROM ex1 WHERE b MATCH 'one two three'; -** -** Because the LHS of the MATCH operator is 2nd column "b", -** Fts3Cursor.eSearch will be set to FTS3_FULLTEXT_SEARCH+1. (+0 for a, -** +1 for b, +2 for c, +3 for d.) If the LHS of MATCH were "ex1" -** indicating that all columns should be searched, -** then eSearch would be set to FTS3_FULLTEXT_SEARCH+4. -*/ -#define FTS3_FULLSCAN_SEARCH 0 /* Linear scan of %_content table */ -#define FTS3_DOCID_SEARCH 1 /* Lookup by rowid on %_content table */ -#define FTS3_FULLTEXT_SEARCH 2 /* Full-text index search */ - - -struct Fts3Doclist { - char *aAll; /* Array containing doclist (or NULL) */ - int nAll; /* Size of a[] in bytes */ - char *pNextDocid; /* Pointer to next docid */ - - sqlite3_int64 iDocid; /* Current docid (if pList!=0) */ - int bFreeList; /* True if pList should be sqlite3_free()d */ - char *pList; /* Pointer to position list following iDocid */ - int nList; /* Length of position list */ -}; - -/* -** A "phrase" is a sequence of one or more tokens that must match in -** sequence. A single token is the base case and the most common case. -** For a sequence of tokens contained in double-quotes (i.e. "one two three") -** nToken will be the number of tokens in the string. -*/ -struct Fts3PhraseToken { - char *z; /* Text of the token */ - int n; /* Number of bytes in buffer z */ - int isPrefix; /* True if token ends with a "*" character */ - int bFirst; /* True if token must appear at position 0 */ - - /* Variables above this point are populated when the expression is - ** parsed (by code in fts3_expr.c). Below this point the variables are - ** used when evaluating the expression. */ - Fts3DeferredToken *pDeferred; /* Deferred token object for this token */ - Fts3MultiSegReader *pSegcsr; /* Segment-reader for this token */ -}; - -struct Fts3Phrase { - /* Cache of doclist for this phrase. */ - Fts3Doclist doclist; - int bIncr; /* True if doclist is loaded incrementally */ - int iDoclistToken; - - /* Variables below this point are populated by fts3_expr.c when parsing - ** a MATCH expression. Everything above is part of the evaluation phase. - */ - int nToken; /* Number of tokens in the phrase */ - int iColumn; /* Index of column this phrase must match */ - Fts3PhraseToken aToken[1]; /* One entry for each token in the phrase */ -}; - -/* -** A tree of these objects forms the RHS of a MATCH operator. -** -** If Fts3Expr.eType is FTSQUERY_PHRASE and isLoaded is true, then aDoclist -** points to a malloced buffer, size nDoclist bytes, containing the results -** of this phrase query in FTS3 doclist format. As usual, the initial -** "Length" field found in doclists stored on disk is omitted from this -** buffer. -** -** Variable aMI is used only for FTSQUERY_NEAR nodes to store the global -** matchinfo data. If it is not NULL, it points to an array of size nCol*3, -** where nCol is the number of columns in the queried FTS table. The array -** is populated as follows: -** -** aMI[iCol*3 + 0] = Undefined -** aMI[iCol*3 + 1] = Number of occurrences -** aMI[iCol*3 + 2] = Number of rows containing at least one instance -** -** The aMI array is allocated using sqlite3_malloc(). It should be freed -** when the expression node is. -*/ -struct Fts3Expr { - int eType; /* One of the FTSQUERY_XXX values defined below */ - int nNear; /* Valid if eType==FTSQUERY_NEAR */ - Fts3Expr *pParent; /* pParent->pLeft==this or pParent->pRight==this */ - Fts3Expr *pLeft; /* Left operand */ - Fts3Expr *pRight; /* Right operand */ - Fts3Phrase *pPhrase; /* Valid if eType==FTSQUERY_PHRASE */ - - /* The following are used by the fts3_eval.c module. */ - sqlite3_int64 iDocid; /* Current docid */ - u8 bEof; /* True this expression is at EOF already */ - u8 bStart; /* True if iDocid is valid */ - u8 bDeferred; /* True if this expression is entirely deferred */ - - u32 *aMI; -}; - -/* -** Candidate values for Fts3Query.eType. Note that the order of the first -** four values is in order of precedence when parsing expressions. For -** example, the following: -** -** "a OR b AND c NOT d NEAR e" -** -** is equivalent to: -** -** "a OR (b AND (c NOT (d NEAR e)))" -*/ -#define FTSQUERY_NEAR 1 -#define FTSQUERY_NOT 2 -#define FTSQUERY_AND 3 -#define FTSQUERY_OR 4 -#define FTSQUERY_PHRASE 5 - - -/* fts3_write.c */ -int sqlite3Fts3UpdateMethod(sqlite3_vtab*,int,sqlite3_value**,sqlite3_int64*); -int sqlite3Fts3PendingTermsFlush(Fts3Table *); -void sqlite3Fts3PendingTermsClear(Fts3Table *); -int sqlite3Fts3Optimize(Fts3Table *); -int sqlite3Fts3SegReaderNew(int, sqlite3_int64, - sqlite3_int64, sqlite3_int64, const char *, int, Fts3SegReader**); -int sqlite3Fts3SegReaderPending( - Fts3Table*,int,const char*,int,int,Fts3SegReader**); -void sqlite3Fts3SegReaderFree(Fts3SegReader *); -int sqlite3Fts3AllSegdirs(Fts3Table*, int, int, sqlite3_stmt **); -int sqlite3Fts3ReadLock(Fts3Table *); -int sqlite3Fts3ReadBlock(Fts3Table*, sqlite3_int64, char **, int*, int*); - -int sqlite3Fts3SelectDoctotal(Fts3Table *, sqlite3_stmt **); -int sqlite3Fts3SelectDocsize(Fts3Table *, sqlite3_int64, sqlite3_stmt **); - -void sqlite3Fts3FreeDeferredTokens(Fts3Cursor *); -int sqlite3Fts3DeferToken(Fts3Cursor *, Fts3PhraseToken *, int); -int sqlite3Fts3CacheDeferredDoclists(Fts3Cursor *); -void sqlite3Fts3FreeDeferredDoclists(Fts3Cursor *); -void sqlite3Fts3SegmentsClose(Fts3Table *); - -/* Special values interpreted by sqlite3SegReaderCursor() */ -#define FTS3_SEGCURSOR_PENDING -1 -#define FTS3_SEGCURSOR_ALL -2 - -int sqlite3Fts3SegReaderStart(Fts3Table*, Fts3MultiSegReader*, Fts3SegFilter*); -int sqlite3Fts3SegReaderStep(Fts3Table *, Fts3MultiSegReader *); -void sqlite3Fts3SegReaderFinish(Fts3MultiSegReader *); - -int sqlite3Fts3SegReaderCursor( - Fts3Table *, int, int, const char *, int, int, int, Fts3MultiSegReader *); - -/* Flags allowed as part of the 4th argument to SegmentReaderIterate() */ -#define FTS3_SEGMENT_REQUIRE_POS 0x00000001 -#define FTS3_SEGMENT_IGNORE_EMPTY 0x00000002 -#define FTS3_SEGMENT_COLUMN_FILTER 0x00000004 -#define FTS3_SEGMENT_PREFIX 0x00000008 -#define FTS3_SEGMENT_SCAN 0x00000010 -#define FTS3_SEGMENT_FIRST 0x00000020 - -/* Type passed as 4th argument to SegmentReaderIterate() */ -struct Fts3SegFilter { - const char *zTerm; - int nTerm; - int iCol; - int flags; -}; - -struct Fts3MultiSegReader { - /* Used internally by sqlite3Fts3SegReaderXXX() calls */ - Fts3SegReader **apSegment; /* Array of Fts3SegReader objects */ - int nSegment; /* Size of apSegment array */ - int nAdvance; /* How many seg-readers to advance */ - Fts3SegFilter *pFilter; /* Pointer to filter object */ - char *aBuffer; /* Buffer to merge doclists in */ - int nBuffer; /* Allocated size of aBuffer[] in bytes */ - - int iColFilter; /* If >=0, filter for this column */ - int bRestart; - - /* Used by fts3.c only. */ - int nCost; /* Cost of running iterator */ - int bLookup; /* True if a lookup of a single entry. */ - - /* Output values. Valid only after Fts3SegReaderStep() returns SQLITE_ROW. */ - char *zTerm; /* Pointer to term buffer */ - int nTerm; /* Size of zTerm in bytes */ - char *aDoclist; /* Pointer to doclist buffer */ - int nDoclist; /* Size of aDoclist[] in bytes */ -}; - -/* fts3.c */ -int sqlite3Fts3PutVarint(char *, sqlite3_int64); -int sqlite3Fts3GetVarint(const char *, sqlite_int64 *); -int sqlite3Fts3GetVarint32(const char *, int *); -int sqlite3Fts3VarintLen(sqlite3_uint64); -void sqlite3Fts3Dequote(char *); -void sqlite3Fts3DoclistPrev(int,char*,int,char**,sqlite3_int64*,int*,u8*); -int sqlite3Fts3EvalPhraseStats(Fts3Cursor *, Fts3Expr *, u32 *); -int sqlite3Fts3FirstFilter(sqlite3_int64, char *, int, char *); - -/* fts3_tokenizer.c */ -const char *sqlite3Fts3NextToken(const char *, int *); -int sqlite3Fts3InitHashTable(sqlite3 *, Fts3Hash *, const char *); -int sqlite3Fts3InitTokenizer(Fts3Hash *pHash, const char *, - sqlite3_tokenizer **, char ** -); -int sqlite3Fts3IsIdChar(char); - -/* fts3_snippet.c */ -void sqlite3Fts3Offsets(sqlite3_context*, Fts3Cursor*); -void sqlite3Fts3Snippet(sqlite3_context *, Fts3Cursor *, const char *, - const char *, const char *, int, int -); -void sqlite3Fts3Matchinfo(sqlite3_context *, Fts3Cursor *, const char *); - -/* fts3_expr.c */ -int sqlite3Fts3ExprParse(sqlite3_tokenizer *, - char **, int, int, int, const char *, int, Fts3Expr ** -); -void sqlite3Fts3ExprFree(Fts3Expr *); -#ifdef SQLITE_TEST -int sqlite3Fts3ExprInitTestInterface(sqlite3 *db); -int sqlite3Fts3InitTerm(sqlite3 *db); -#endif - -/* fts3_aux.c */ -int sqlite3Fts3InitAux(sqlite3 *db); - -void sqlite3Fts3EvalPhraseCleanup(Fts3Phrase *); - -int sqlite3Fts3MsrIncrStart( - Fts3Table*, Fts3MultiSegReader*, int, const char*, int); -int sqlite3Fts3MsrIncrNext( - Fts3Table *, Fts3MultiSegReader *, sqlite3_int64 *, char **, int *); -char *sqlite3Fts3EvalPhrasePoslist(Fts3Cursor *, Fts3Expr *, int iCol); -int sqlite3Fts3MsrOvfl(Fts3Cursor *, Fts3MultiSegReader *, int *); -int sqlite3Fts3MsrIncrRestart(Fts3MultiSegReader *pCsr); - -int sqlite3Fts3DeferredTokenList(Fts3DeferredToken *, char **, int *); - -#endif /* !SQLITE_CORE || SQLITE_ENABLE_FTS3 */ -#endif /* _FTSINT_H */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_aux.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_aux.c deleted file mode 100644 index f37527b833..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_aux.c +++ /dev/null @@ -1,474 +0,0 @@ -/* -** 2011 Jan 27 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -*/ -#include "fts3Int.h" -#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) - -#include -#include - -typedef struct Fts3auxTable Fts3auxTable; -typedef struct Fts3auxCursor Fts3auxCursor; - -struct Fts3auxTable { - sqlite3_vtab base; /* Base class used by SQLite core */ - Fts3Table *pFts3Tab; -}; - -struct Fts3auxCursor { - sqlite3_vtab_cursor base; /* Base class used by SQLite core */ - Fts3MultiSegReader csr; /* Must be right after "base" */ - Fts3SegFilter filter; - char *zStop; - int nStop; /* Byte-length of string zStop */ - int isEof; /* True if cursor is at EOF */ - sqlite3_int64 iRowid; /* Current rowid */ - - int iCol; /* Current value of 'col' column */ - int nStat; /* Size of aStat[] array */ - struct Fts3auxColstats { - sqlite3_int64 nDoc; /* 'documents' values for current csr row */ - sqlite3_int64 nOcc; /* 'occurrences' values for current csr row */ - } *aStat; -}; - -/* -** Schema of the terms table. -*/ -#define FTS3_TERMS_SCHEMA "CREATE TABLE x(term, col, documents, occurrences)" - -/* -** This function does all the work for both the xConnect and xCreate methods. -** These tables have no persistent representation of their own, so xConnect -** and xCreate are identical operations. -*/ -static int fts3auxConnectMethod( - sqlite3 *db, /* Database connection */ - void *pUnused, /* Unused */ - int argc, /* Number of elements in argv array */ - const char * const *argv, /* xCreate/xConnect argument array */ - sqlite3_vtab **ppVtab, /* OUT: New sqlite3_vtab object */ - char **pzErr /* OUT: sqlite3_malloc'd error message */ -){ - char const *zDb; /* Name of database (e.g. "main") */ - char const *zFts3; /* Name of fts3 table */ - int nDb; /* Result of strlen(zDb) */ - int nFts3; /* Result of strlen(zFts3) */ - int nByte; /* Bytes of space to allocate here */ - int rc; /* value returned by declare_vtab() */ - Fts3auxTable *p; /* Virtual table object to return */ - - UNUSED_PARAMETER(pUnused); - - /* The user should specify a single argument - the name of an fts3 table. */ - if( argc!=4 ){ - *pzErr = sqlite3_mprintf( - "wrong number of arguments to fts4aux constructor" - ); - return SQLITE_ERROR; - } - - zDb = argv[1]; - nDb = strlen(zDb); - zFts3 = argv[3]; - nFts3 = strlen(zFts3); - - rc = sqlite3_declare_vtab(db, FTS3_TERMS_SCHEMA); - if( rc!=SQLITE_OK ) return rc; - - nByte = sizeof(Fts3auxTable) + sizeof(Fts3Table) + nDb + nFts3 + 2; - p = (Fts3auxTable *)sqlite3_malloc(nByte); - if( !p ) return SQLITE_NOMEM; - memset(p, 0, nByte); - - p->pFts3Tab = (Fts3Table *)&p[1]; - p->pFts3Tab->zDb = (char *)&p->pFts3Tab[1]; - p->pFts3Tab->zName = &p->pFts3Tab->zDb[nDb+1]; - p->pFts3Tab->db = db; - p->pFts3Tab->nIndex = 1; - - memcpy((char *)p->pFts3Tab->zDb, zDb, nDb); - memcpy((char *)p->pFts3Tab->zName, zFts3, nFts3); - sqlite3Fts3Dequote((char *)p->pFts3Tab->zName); - - *ppVtab = (sqlite3_vtab *)p; - return SQLITE_OK; -} - -/* -** This function does the work for both the xDisconnect and xDestroy methods. -** These tables have no persistent representation of their own, so xDisconnect -** and xDestroy are identical operations. -*/ -static int fts3auxDisconnectMethod(sqlite3_vtab *pVtab){ - Fts3auxTable *p = (Fts3auxTable *)pVtab; - Fts3Table *pFts3 = p->pFts3Tab; - int i; - - /* Free any prepared statements held */ - for(i=0; iaStmt); i++){ - sqlite3_finalize(pFts3->aStmt[i]); - } - sqlite3_free(pFts3->zSegmentsTbl); - sqlite3_free(p); - return SQLITE_OK; -} - -#define FTS4AUX_EQ_CONSTRAINT 1 -#define FTS4AUX_GE_CONSTRAINT 2 -#define FTS4AUX_LE_CONSTRAINT 4 - -/* -** xBestIndex - Analyze a WHERE and ORDER BY clause. -*/ -static int fts3auxBestIndexMethod( - sqlite3_vtab *pVTab, - sqlite3_index_info *pInfo -){ - int i; - int iEq = -1; - int iGe = -1; - int iLe = -1; - - UNUSED_PARAMETER(pVTab); - - /* This vtab delivers always results in "ORDER BY term ASC" order. */ - if( pInfo->nOrderBy==1 - && pInfo->aOrderBy[0].iColumn==0 - && pInfo->aOrderBy[0].desc==0 - ){ - pInfo->orderByConsumed = 1; - } - - /* Search for equality and range constraints on the "term" column. */ - for(i=0; inConstraint; i++){ - if( pInfo->aConstraint[i].usable && pInfo->aConstraint[i].iColumn==0 ){ - int op = pInfo->aConstraint[i].op; - if( op==SQLITE_INDEX_CONSTRAINT_EQ ) iEq = i; - if( op==SQLITE_INDEX_CONSTRAINT_LT ) iLe = i; - if( op==SQLITE_INDEX_CONSTRAINT_LE ) iLe = i; - if( op==SQLITE_INDEX_CONSTRAINT_GT ) iGe = i; - if( op==SQLITE_INDEX_CONSTRAINT_GE ) iGe = i; - } - } - - if( iEq>=0 ){ - pInfo->idxNum = FTS4AUX_EQ_CONSTRAINT; - pInfo->aConstraintUsage[iEq].argvIndex = 1; - pInfo->estimatedCost = 5; - }else{ - pInfo->idxNum = 0; - pInfo->estimatedCost = 20000; - if( iGe>=0 ){ - pInfo->idxNum += FTS4AUX_GE_CONSTRAINT; - pInfo->aConstraintUsage[iGe].argvIndex = 1; - pInfo->estimatedCost /= 2; - } - if( iLe>=0 ){ - pInfo->idxNum += FTS4AUX_LE_CONSTRAINT; - pInfo->aConstraintUsage[iLe].argvIndex = 1 + (iGe>=0); - pInfo->estimatedCost /= 2; - } - } - - return SQLITE_OK; -} - -/* -** xOpen - Open a cursor. -*/ -static int fts3auxOpenMethod(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCsr){ - Fts3auxCursor *pCsr; /* Pointer to cursor object to return */ - - UNUSED_PARAMETER(pVTab); - - pCsr = (Fts3auxCursor *)sqlite3_malloc(sizeof(Fts3auxCursor)); - if( !pCsr ) return SQLITE_NOMEM; - memset(pCsr, 0, sizeof(Fts3auxCursor)); - - *ppCsr = (sqlite3_vtab_cursor *)pCsr; - return SQLITE_OK; -} - -/* -** xClose - Close a cursor. -*/ -static int fts3auxCloseMethod(sqlite3_vtab_cursor *pCursor){ - Fts3Table *pFts3 = ((Fts3auxTable *)pCursor->pVtab)->pFts3Tab; - Fts3auxCursor *pCsr = (Fts3auxCursor *)pCursor; - - sqlite3Fts3SegmentsClose(pFts3); - sqlite3Fts3SegReaderFinish(&pCsr->csr); - sqlite3_free((void *)pCsr->filter.zTerm); - sqlite3_free(pCsr->zStop); - sqlite3_free(pCsr->aStat); - sqlite3_free(pCsr); - return SQLITE_OK; -} - -static int fts3auxGrowStatArray(Fts3auxCursor *pCsr, int nSize){ - if( nSize>pCsr->nStat ){ - struct Fts3auxColstats *aNew; - aNew = (struct Fts3auxColstats *)sqlite3_realloc(pCsr->aStat, - sizeof(struct Fts3auxColstats) * nSize - ); - if( aNew==0 ) return SQLITE_NOMEM; - memset(&aNew[pCsr->nStat], 0, - sizeof(struct Fts3auxColstats) * (nSize - pCsr->nStat) - ); - pCsr->aStat = aNew; - pCsr->nStat = nSize; - } - return SQLITE_OK; -} - -/* -** xNext - Advance the cursor to the next row, if any. -*/ -static int fts3auxNextMethod(sqlite3_vtab_cursor *pCursor){ - Fts3auxCursor *pCsr = (Fts3auxCursor *)pCursor; - Fts3Table *pFts3 = ((Fts3auxTable *)pCursor->pVtab)->pFts3Tab; - int rc; - - /* Increment our pretend rowid value. */ - pCsr->iRowid++; - - for(pCsr->iCol++; pCsr->iColnStat; pCsr->iCol++){ - if( pCsr->aStat[pCsr->iCol].nDoc>0 ) return SQLITE_OK; - } - - rc = sqlite3Fts3SegReaderStep(pFts3, &pCsr->csr); - if( rc==SQLITE_ROW ){ - int i = 0; - int nDoclist = pCsr->csr.nDoclist; - char *aDoclist = pCsr->csr.aDoclist; - int iCol; - - int eState = 0; - - if( pCsr->zStop ){ - int n = (pCsr->nStopcsr.nTerm) ? pCsr->nStop : pCsr->csr.nTerm; - int mc = memcmp(pCsr->zStop, pCsr->csr.zTerm, n); - if( mc<0 || (mc==0 && pCsr->csr.nTerm>pCsr->nStop) ){ - pCsr->isEof = 1; - return SQLITE_OK; - } - } - - if( fts3auxGrowStatArray(pCsr, 2) ) return SQLITE_NOMEM; - memset(pCsr->aStat, 0, sizeof(struct Fts3auxColstats) * pCsr->nStat); - iCol = 0; - - while( iaStat[0].nDoc++; - eState = 1; - iCol = 0; - break; - - /* State 1. In this state we are expecting either a 1, indicating - ** that the following integer will be a column number, or the - ** start of a position list for column 0. - ** - ** The only difference between state 1 and state 2 is that if the - ** integer encountered in state 1 is not 0 or 1, then we need to - ** increment the column 0 "nDoc" count for this term. - */ - case 1: - assert( iCol==0 ); - if( v>1 ){ - pCsr->aStat[1].nDoc++; - } - eState = 2; - /* fall through */ - - case 2: - if( v==0 ){ /* 0x00. Next integer will be a docid. */ - eState = 0; - }else if( v==1 ){ /* 0x01. Next integer will be a column number. */ - eState = 3; - }else{ /* 2 or greater. A position. */ - pCsr->aStat[iCol+1].nOcc++; - pCsr->aStat[0].nOcc++; - } - break; - - /* State 3. The integer just read is a column number. */ - default: assert( eState==3 ); - iCol = (int)v; - if( fts3auxGrowStatArray(pCsr, iCol+2) ) return SQLITE_NOMEM; - pCsr->aStat[iCol+1].nDoc++; - eState = 2; - break; - } - } - - pCsr->iCol = 0; - rc = SQLITE_OK; - }else{ - pCsr->isEof = 1; - } - return rc; -} - -/* -** xFilter - Initialize a cursor to point at the start of its data. -*/ -static int fts3auxFilterMethod( - sqlite3_vtab_cursor *pCursor, /* The cursor used for this query */ - int idxNum, /* Strategy index */ - const char *idxStr, /* Unused */ - int nVal, /* Number of elements in apVal */ - sqlite3_value **apVal /* Arguments for the indexing scheme */ -){ - Fts3auxCursor *pCsr = (Fts3auxCursor *)pCursor; - Fts3Table *pFts3 = ((Fts3auxTable *)pCursor->pVtab)->pFts3Tab; - int rc; - int isScan; - - UNUSED_PARAMETER(nVal); - UNUSED_PARAMETER(idxStr); - - assert( idxStr==0 ); - assert( idxNum==FTS4AUX_EQ_CONSTRAINT || idxNum==0 - || idxNum==FTS4AUX_LE_CONSTRAINT || idxNum==FTS4AUX_GE_CONSTRAINT - || idxNum==(FTS4AUX_LE_CONSTRAINT|FTS4AUX_GE_CONSTRAINT) - ); - isScan = (idxNum!=FTS4AUX_EQ_CONSTRAINT); - - /* In case this cursor is being reused, close and zero it. */ - testcase(pCsr->filter.zTerm); - sqlite3Fts3SegReaderFinish(&pCsr->csr); - sqlite3_free((void *)pCsr->filter.zTerm); - sqlite3_free(pCsr->aStat); - memset(&pCsr->csr, 0, ((u8*)&pCsr[1]) - (u8*)&pCsr->csr); - - pCsr->filter.flags = FTS3_SEGMENT_REQUIRE_POS|FTS3_SEGMENT_IGNORE_EMPTY; - if( isScan ) pCsr->filter.flags |= FTS3_SEGMENT_SCAN; - - if( idxNum&(FTS4AUX_EQ_CONSTRAINT|FTS4AUX_GE_CONSTRAINT) ){ - const unsigned char *zStr = sqlite3_value_text(apVal[0]); - if( zStr ){ - pCsr->filter.zTerm = sqlite3_mprintf("%s", zStr); - pCsr->filter.nTerm = sqlite3_value_bytes(apVal[0]); - if( pCsr->filter.zTerm==0 ) return SQLITE_NOMEM; - } - } - if( idxNum&FTS4AUX_LE_CONSTRAINT ){ - int iIdx = (idxNum&FTS4AUX_GE_CONSTRAINT) ? 1 : 0; - pCsr->zStop = sqlite3_mprintf("%s", sqlite3_value_text(apVal[iIdx])); - pCsr->nStop = sqlite3_value_bytes(apVal[iIdx]); - if( pCsr->zStop==0 ) return SQLITE_NOMEM; - } - - rc = sqlite3Fts3SegReaderCursor(pFts3, 0, FTS3_SEGCURSOR_ALL, - pCsr->filter.zTerm, pCsr->filter.nTerm, 0, isScan, &pCsr->csr - ); - if( rc==SQLITE_OK ){ - rc = sqlite3Fts3SegReaderStart(pFts3, &pCsr->csr, &pCsr->filter); - } - - if( rc==SQLITE_OK ) rc = fts3auxNextMethod(pCursor); - return rc; -} - -/* -** xEof - Return true if the cursor is at EOF, or false otherwise. -*/ -static int fts3auxEofMethod(sqlite3_vtab_cursor *pCursor){ - Fts3auxCursor *pCsr = (Fts3auxCursor *)pCursor; - return pCsr->isEof; -} - -/* -** xColumn - Return a column value. -*/ -static int fts3auxColumnMethod( - sqlite3_vtab_cursor *pCursor, /* Cursor to retrieve value from */ - sqlite3_context *pContext, /* Context for sqlite3_result_xxx() calls */ - int iCol /* Index of column to read value from */ -){ - Fts3auxCursor *p = (Fts3auxCursor *)pCursor; - - assert( p->isEof==0 ); - if( iCol==0 ){ /* Column "term" */ - sqlite3_result_text(pContext, p->csr.zTerm, p->csr.nTerm, SQLITE_TRANSIENT); - }else if( iCol==1 ){ /* Column "col" */ - if( p->iCol ){ - sqlite3_result_int(pContext, p->iCol-1); - }else{ - sqlite3_result_text(pContext, "*", -1, SQLITE_STATIC); - } - }else if( iCol==2 ){ /* Column "documents" */ - sqlite3_result_int64(pContext, p->aStat[p->iCol].nDoc); - }else{ /* Column "occurrences" */ - sqlite3_result_int64(pContext, p->aStat[p->iCol].nOcc); - } - - return SQLITE_OK; -} - -/* -** xRowid - Return the current rowid for the cursor. -*/ -static int fts3auxRowidMethod( - sqlite3_vtab_cursor *pCursor, /* Cursor to retrieve value from */ - sqlite_int64 *pRowid /* OUT: Rowid value */ -){ - Fts3auxCursor *pCsr = (Fts3auxCursor *)pCursor; - *pRowid = pCsr->iRowid; - return SQLITE_OK; -} - -/* -** Register the fts3aux module with database connection db. Return SQLITE_OK -** if successful or an error code if sqlite3_create_module() fails. -*/ -int sqlite3Fts3InitAux(sqlite3 *db){ - static const sqlite3_module fts3aux_module = { - 0, /* iVersion */ - fts3auxConnectMethod, /* xCreate */ - fts3auxConnectMethod, /* xConnect */ - fts3auxBestIndexMethod, /* xBestIndex */ - fts3auxDisconnectMethod, /* xDisconnect */ - fts3auxDisconnectMethod, /* xDestroy */ - fts3auxOpenMethod, /* xOpen */ - fts3auxCloseMethod, /* xClose */ - fts3auxFilterMethod, /* xFilter */ - fts3auxNextMethod, /* xNext */ - fts3auxEofMethod, /* xEof */ - fts3auxColumnMethod, /* xColumn */ - fts3auxRowidMethod, /* xRowid */ - 0, /* xUpdate */ - 0, /* xBegin */ - 0, /* xSync */ - 0, /* xCommit */ - 0, /* xRollback */ - 0, /* xFindFunction */ - 0, /* xRename */ - 0, /* xSavepoint */ - 0, /* xRelease */ - 0 /* xRollbackTo */ - }; - int rc; /* Return code */ - - rc = sqlite3_create_module(db, "fts4aux", &fts3aux_module, 0); - return rc; -} - -#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_expr.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_expr.c deleted file mode 100644 index 001f29b7ce..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_expr.c +++ /dev/null @@ -1,984 +0,0 @@ -/* -** 2008 Nov 28 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This module contains code that implements a parser for fts3 query strings -** (the right-hand argument to the MATCH operator). Because the supported -** syntax is relatively simple, the whole tokenizer/parser system is -** hand-coded. -*/ -#include "fts3Int.h" -#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) - -/* -** By default, this module parses the legacy syntax that has been -** traditionally used by fts3. Or, if SQLITE_ENABLE_FTS3_PARENTHESIS -** is defined, then it uses the new syntax. The differences between -** the new and the old syntaxes are: -** -** a) The new syntax supports parenthesis. The old does not. -** -** b) The new syntax supports the AND and NOT operators. The old does not. -** -** c) The old syntax supports the "-" token qualifier. This is not -** supported by the new syntax (it is replaced by the NOT operator). -** -** d) When using the old syntax, the OR operator has a greater precedence -** than an implicit AND. When using the new, both implicity and explicit -** AND operators have a higher precedence than OR. -** -** If compiled with SQLITE_TEST defined, then this module exports the -** symbol "int sqlite3_fts3_enable_parentheses". Setting this variable -** to zero causes the module to use the old syntax. If it is set to -** non-zero the new syntax is activated. This is so both syntaxes can -** be tested using a single build of testfixture. -** -** The following describes the syntax supported by the fts3 MATCH -** operator in a similar format to that used by the lemon parser -** generator. This module does not use actually lemon, it uses a -** custom parser. -** -** query ::= andexpr (OR andexpr)*. -** -** andexpr ::= notexpr (AND? notexpr)*. -** -** notexpr ::= nearexpr (NOT nearexpr|-TOKEN)*. -** notexpr ::= LP query RP. -** -** nearexpr ::= phrase (NEAR distance_opt nearexpr)*. -** -** distance_opt ::= . -** distance_opt ::= / INTEGER. -** -** phrase ::= TOKEN. -** phrase ::= COLUMN:TOKEN. -** phrase ::= "TOKEN TOKEN TOKEN...". -*/ - -#ifdef SQLITE_TEST -int sqlite3_fts3_enable_parentheses = 0; -#else -# ifdef SQLITE_ENABLE_FTS3_PARENTHESIS -# define sqlite3_fts3_enable_parentheses 1 -# else -# define sqlite3_fts3_enable_parentheses 0 -# endif -#endif - -/* -** Default span for NEAR operators. -*/ -#define SQLITE_FTS3_DEFAULT_NEAR_PARAM 10 - -#include -#include - -/* -** isNot: -** This variable is used by function getNextNode(). When getNextNode() is -** called, it sets ParseContext.isNot to true if the 'next node' is a -** FTSQUERY_PHRASE with a unary "-" attached to it. i.e. "mysql" in the -** FTS3 query "sqlite -mysql". Otherwise, ParseContext.isNot is set to -** zero. -*/ -typedef struct ParseContext ParseContext; -struct ParseContext { - sqlite3_tokenizer *pTokenizer; /* Tokenizer module */ - const char **azCol; /* Array of column names for fts3 table */ - int bFts4; /* True to allow FTS4-only syntax */ - int nCol; /* Number of entries in azCol[] */ - int iDefaultCol; /* Default column to query */ - int isNot; /* True if getNextNode() sees a unary - */ - sqlite3_context *pCtx; /* Write error message here */ - int nNest; /* Number of nested brackets */ -}; - -/* -** This function is equivalent to the standard isspace() function. -** -** The standard isspace() can be awkward to use safely, because although it -** is defined to accept an argument of type int, its behaviour when passed -** an integer that falls outside of the range of the unsigned char type -** is undefined (and sometimes, "undefined" means segfault). This wrapper -** is defined to accept an argument of type char, and always returns 0 for -** any values that fall outside of the range of the unsigned char type (i.e. -** negative values). -*/ -static int fts3isspace(char c){ - return c==' ' || c=='\t' || c=='\n' || c=='\r' || c=='\v' || c=='\f'; -} - -/* -** Allocate nByte bytes of memory using sqlite3_malloc(). If successful, -** zero the memory before returning a pointer to it. If unsuccessful, -** return NULL. -*/ -static void *fts3MallocZero(int nByte){ - void *pRet = sqlite3_malloc(nByte); - if( pRet ) memset(pRet, 0, nByte); - return pRet; -} - - -/* -** Extract the next token from buffer z (length n) using the tokenizer -** and other information (column names etc.) in pParse. Create an Fts3Expr -** structure of type FTSQUERY_PHRASE containing a phrase consisting of this -** single token and set *ppExpr to point to it. If the end of the buffer is -** reached before a token is found, set *ppExpr to zero. It is the -** responsibility of the caller to eventually deallocate the allocated -** Fts3Expr structure (if any) by passing it to sqlite3_free(). -** -** Return SQLITE_OK if successful, or SQLITE_NOMEM if a memory allocation -** fails. -*/ -static int getNextToken( - ParseContext *pParse, /* fts3 query parse context */ - int iCol, /* Value for Fts3Phrase.iColumn */ - const char *z, int n, /* Input string */ - Fts3Expr **ppExpr, /* OUT: expression */ - int *pnConsumed /* OUT: Number of bytes consumed */ -){ - sqlite3_tokenizer *pTokenizer = pParse->pTokenizer; - sqlite3_tokenizer_module const *pModule = pTokenizer->pModule; - int rc; - sqlite3_tokenizer_cursor *pCursor; - Fts3Expr *pRet = 0; - int nConsumed = 0; - - rc = pModule->xOpen(pTokenizer, z, n, &pCursor); - if( rc==SQLITE_OK ){ - const char *zToken; - int nToken, iStart, iEnd, iPosition; - int nByte; /* total space to allocate */ - - pCursor->pTokenizer = pTokenizer; - rc = pModule->xNext(pCursor, &zToken, &nToken, &iStart, &iEnd, &iPosition); - - if( rc==SQLITE_OK ){ - nByte = sizeof(Fts3Expr) + sizeof(Fts3Phrase) + nToken; - pRet = (Fts3Expr *)fts3MallocZero(nByte); - if( !pRet ){ - rc = SQLITE_NOMEM; - }else{ - pRet->eType = FTSQUERY_PHRASE; - pRet->pPhrase = (Fts3Phrase *)&pRet[1]; - pRet->pPhrase->nToken = 1; - pRet->pPhrase->iColumn = iCol; - pRet->pPhrase->aToken[0].n = nToken; - pRet->pPhrase->aToken[0].z = (char *)&pRet->pPhrase[1]; - memcpy(pRet->pPhrase->aToken[0].z, zToken, nToken); - - if( iEndpPhrase->aToken[0].isPrefix = 1; - iEnd++; - } - - while( 1 ){ - if( !sqlite3_fts3_enable_parentheses - && iStart>0 && z[iStart-1]=='-' - ){ - pParse->isNot = 1; - iStart--; - }else if( pParse->bFts4 && iStart>0 && z[iStart-1]=='^' ){ - pRet->pPhrase->aToken[0].bFirst = 1; - iStart--; - }else{ - break; - } - } - - } - nConsumed = iEnd; - } - - pModule->xClose(pCursor); - } - - *pnConsumed = nConsumed; - *ppExpr = pRet; - return rc; -} - - -/* -** Enlarge a memory allocation. If an out-of-memory allocation occurs, -** then free the old allocation. -*/ -static void *fts3ReallocOrFree(void *pOrig, int nNew){ - void *pRet = sqlite3_realloc(pOrig, nNew); - if( !pRet ){ - sqlite3_free(pOrig); - } - return pRet; -} - -/* -** Buffer zInput, length nInput, contains the contents of a quoted string -** that appeared as part of an fts3 query expression. Neither quote character -** is included in the buffer. This function attempts to tokenize the entire -** input buffer and create an Fts3Expr structure of type FTSQUERY_PHRASE -** containing the results. -** -** If successful, SQLITE_OK is returned and *ppExpr set to point at the -** allocated Fts3Expr structure. Otherwise, either SQLITE_NOMEM (out of memory -** error) or SQLITE_ERROR (tokenization error) is returned and *ppExpr set -** to 0. -*/ -static int getNextString( - ParseContext *pParse, /* fts3 query parse context */ - const char *zInput, int nInput, /* Input string */ - Fts3Expr **ppExpr /* OUT: expression */ -){ - sqlite3_tokenizer *pTokenizer = pParse->pTokenizer; - sqlite3_tokenizer_module const *pModule = pTokenizer->pModule; - int rc; - Fts3Expr *p = 0; - sqlite3_tokenizer_cursor *pCursor = 0; - char *zTemp = 0; - int nTemp = 0; - - const int nSpace = sizeof(Fts3Expr) + sizeof(Fts3Phrase); - int nToken = 0; - - /* The final Fts3Expr data structure, including the Fts3Phrase, - ** Fts3PhraseToken structures token buffers are all stored as a single - ** allocation so that the expression can be freed with a single call to - ** sqlite3_free(). Setting this up requires a two pass approach. - ** - ** The first pass, in the block below, uses a tokenizer cursor to iterate - ** through the tokens in the expression. This pass uses fts3ReallocOrFree() - ** to assemble data in two dynamic buffers: - ** - ** Buffer p: Points to the Fts3Expr structure, followed by the Fts3Phrase - ** structure, followed by the array of Fts3PhraseToken - ** structures. This pass only populates the Fts3PhraseToken array. - ** - ** Buffer zTemp: Contains copies of all tokens. - ** - ** The second pass, in the block that begins "if( rc==SQLITE_DONE )" below, - ** appends buffer zTemp to buffer p, and fills in the Fts3Expr and Fts3Phrase - ** structures. - */ - rc = pModule->xOpen(pTokenizer, zInput, nInput, &pCursor); - if( rc==SQLITE_OK ){ - int ii; - pCursor->pTokenizer = pTokenizer; - for(ii=0; rc==SQLITE_OK; ii++){ - const char *zByte; - int nByte, iBegin, iEnd, iPos; - rc = pModule->xNext(pCursor, &zByte, &nByte, &iBegin, &iEnd, &iPos); - if( rc==SQLITE_OK ){ - Fts3PhraseToken *pToken; - - p = fts3ReallocOrFree(p, nSpace + ii*sizeof(Fts3PhraseToken)); - if( !p ) goto no_mem; - - zTemp = fts3ReallocOrFree(zTemp, nTemp + nByte); - if( !zTemp ) goto no_mem; - - assert( nToken==ii ); - pToken = &((Fts3Phrase *)(&p[1]))->aToken[ii]; - memset(pToken, 0, sizeof(Fts3PhraseToken)); - - memcpy(&zTemp[nTemp], zByte, nByte); - nTemp += nByte; - - pToken->n = nByte; - pToken->isPrefix = (iEndbFirst = (iBegin>0 && zInput[iBegin-1]=='^'); - nToken = ii+1; - } - } - - pModule->xClose(pCursor); - pCursor = 0; - } - - if( rc==SQLITE_DONE ){ - int jj; - char *zBuf = 0; - - p = fts3ReallocOrFree(p, nSpace + nToken*sizeof(Fts3PhraseToken) + nTemp); - if( !p ) goto no_mem; - memset(p, 0, (char *)&(((Fts3Phrase *)&p[1])->aToken[0])-(char *)p); - p->eType = FTSQUERY_PHRASE; - p->pPhrase = (Fts3Phrase *)&p[1]; - p->pPhrase->iColumn = pParse->iDefaultCol; - p->pPhrase->nToken = nToken; - - zBuf = (char *)&p->pPhrase->aToken[nToken]; - if( zTemp ){ - memcpy(zBuf, zTemp, nTemp); - sqlite3_free(zTemp); - }else{ - assert( nTemp==0 ); - } - - for(jj=0; jjpPhrase->nToken; jj++){ - p->pPhrase->aToken[jj].z = zBuf; - zBuf += p->pPhrase->aToken[jj].n; - } - rc = SQLITE_OK; - } - - *ppExpr = p; - return rc; -no_mem: - - if( pCursor ){ - pModule->xClose(pCursor); - } - sqlite3_free(zTemp); - sqlite3_free(p); - *ppExpr = 0; - return SQLITE_NOMEM; -} - -/* -** Function getNextNode(), which is called by fts3ExprParse(), may itself -** call fts3ExprParse(). So this forward declaration is required. -*/ -static int fts3ExprParse(ParseContext *, const char *, int, Fts3Expr **, int *); - -/* -** The output variable *ppExpr is populated with an allocated Fts3Expr -** structure, or set to 0 if the end of the input buffer is reached. -** -** Returns an SQLite error code. SQLITE_OK if everything works, SQLITE_NOMEM -** if a malloc failure occurs, or SQLITE_ERROR if a parse error is encountered. -** If SQLITE_ERROR is returned, pContext is populated with an error message. -*/ -static int getNextNode( - ParseContext *pParse, /* fts3 query parse context */ - const char *z, int n, /* Input string */ - Fts3Expr **ppExpr, /* OUT: expression */ - int *pnConsumed /* OUT: Number of bytes consumed */ -){ - static const struct Fts3Keyword { - char *z; /* Keyword text */ - unsigned char n; /* Length of the keyword */ - unsigned char parenOnly; /* Only valid in paren mode */ - unsigned char eType; /* Keyword code */ - } aKeyword[] = { - { "OR" , 2, 0, FTSQUERY_OR }, - { "AND", 3, 1, FTSQUERY_AND }, - { "NOT", 3, 1, FTSQUERY_NOT }, - { "NEAR", 4, 0, FTSQUERY_NEAR } - }; - int ii; - int iCol; - int iColLen; - int rc; - Fts3Expr *pRet = 0; - - const char *zInput = z; - int nInput = n; - - pParse->isNot = 0; - - /* Skip over any whitespace before checking for a keyword, an open or - ** close bracket, or a quoted string. - */ - while( nInput>0 && fts3isspace(*zInput) ){ - nInput--; - zInput++; - } - if( nInput==0 ){ - return SQLITE_DONE; - } - - /* See if we are dealing with a keyword. */ - for(ii=0; ii<(int)(sizeof(aKeyword)/sizeof(struct Fts3Keyword)); ii++){ - const struct Fts3Keyword *pKey = &aKeyword[ii]; - - if( (pKey->parenOnly & ~sqlite3_fts3_enable_parentheses)!=0 ){ - continue; - } - - if( nInput>=pKey->n && 0==memcmp(zInput, pKey->z, pKey->n) ){ - int nNear = SQLITE_FTS3_DEFAULT_NEAR_PARAM; - int nKey = pKey->n; - char cNext; - - /* If this is a "NEAR" keyword, check for an explicit nearness. */ - if( pKey->eType==FTSQUERY_NEAR ){ - assert( nKey==4 ); - if( zInput[4]=='/' && zInput[5]>='0' && zInput[5]<='9' ){ - nNear = 0; - for(nKey=5; zInput[nKey]>='0' && zInput[nKey]<='9'; nKey++){ - nNear = nNear * 10 + (zInput[nKey] - '0'); - } - } - } - - /* At this point this is probably a keyword. But for that to be true, - ** the next byte must contain either whitespace, an open or close - ** parenthesis, a quote character, or EOF. - */ - cNext = zInput[nKey]; - if( fts3isspace(cNext) - || cNext=='"' || cNext=='(' || cNext==')' || cNext==0 - ){ - pRet = (Fts3Expr *)fts3MallocZero(sizeof(Fts3Expr)); - if( !pRet ){ - return SQLITE_NOMEM; - } - pRet->eType = pKey->eType; - pRet->nNear = nNear; - *ppExpr = pRet; - *pnConsumed = (int)((zInput - z) + nKey); - return SQLITE_OK; - } - - /* Turns out that wasn't a keyword after all. This happens if the - ** user has supplied a token such as "ORacle". Continue. - */ - } - } - - /* Check for an open bracket. */ - if( sqlite3_fts3_enable_parentheses ){ - if( *zInput=='(' ){ - int nConsumed; - pParse->nNest++; - rc = fts3ExprParse(pParse, &zInput[1], nInput-1, ppExpr, &nConsumed); - if( rc==SQLITE_OK && !*ppExpr ){ - rc = SQLITE_DONE; - } - *pnConsumed = (int)((zInput - z) + 1 + nConsumed); - return rc; - } - - /* Check for a close bracket. */ - if( *zInput==')' ){ - pParse->nNest--; - *pnConsumed = (int)((zInput - z) + 1); - return SQLITE_DONE; - } - } - - /* See if we are dealing with a quoted phrase. If this is the case, then - ** search for the closing quote and pass the whole string to getNextString() - ** for processing. This is easy to do, as fts3 has no syntax for escaping - ** a quote character embedded in a string. - */ - if( *zInput=='"' ){ - for(ii=1; iiiDefaultCol; - iColLen = 0; - for(ii=0; iinCol; ii++){ - const char *zStr = pParse->azCol[ii]; - int nStr = (int)strlen(zStr); - if( nInput>nStr && zInput[nStr]==':' - && sqlite3_strnicmp(zStr, zInput, nStr)==0 - ){ - iCol = ii; - iColLen = (int)((zInput - z) + nStr + 1); - break; - } - } - rc = getNextToken(pParse, iCol, &z[iColLen], n-iColLen, ppExpr, pnConsumed); - *pnConsumed += iColLen; - return rc; -} - -/* -** The argument is an Fts3Expr structure for a binary operator (any type -** except an FTSQUERY_PHRASE). Return an integer value representing the -** precedence of the operator. Lower values have a higher precedence (i.e. -** group more tightly). For example, in the C language, the == operator -** groups more tightly than ||, and would therefore have a higher precedence. -** -** When using the new fts3 query syntax (when SQLITE_ENABLE_FTS3_PARENTHESIS -** is defined), the order of the operators in precedence from highest to -** lowest is: -** -** NEAR -** NOT -** AND (including implicit ANDs) -** OR -** -** Note that when using the old query syntax, the OR operator has a higher -** precedence than the AND operator. -*/ -static int opPrecedence(Fts3Expr *p){ - assert( p->eType!=FTSQUERY_PHRASE ); - if( sqlite3_fts3_enable_parentheses ){ - return p->eType; - }else if( p->eType==FTSQUERY_NEAR ){ - return 1; - }else if( p->eType==FTSQUERY_OR ){ - return 2; - } - assert( p->eType==FTSQUERY_AND ); - return 3; -} - -/* -** Argument ppHead contains a pointer to the current head of a query -** expression tree being parsed. pPrev is the expression node most recently -** inserted into the tree. This function adds pNew, which is always a binary -** operator node, into the expression tree based on the relative precedence -** of pNew and the existing nodes of the tree. This may result in the head -** of the tree changing, in which case *ppHead is set to the new root node. -*/ -static void insertBinaryOperator( - Fts3Expr **ppHead, /* Pointer to the root node of a tree */ - Fts3Expr *pPrev, /* Node most recently inserted into the tree */ - Fts3Expr *pNew /* New binary node to insert into expression tree */ -){ - Fts3Expr *pSplit = pPrev; - while( pSplit->pParent && opPrecedence(pSplit->pParent)<=opPrecedence(pNew) ){ - pSplit = pSplit->pParent; - } - - if( pSplit->pParent ){ - assert( pSplit->pParent->pRight==pSplit ); - pSplit->pParent->pRight = pNew; - pNew->pParent = pSplit->pParent; - }else{ - *ppHead = pNew; - } - pNew->pLeft = pSplit; - pSplit->pParent = pNew; -} - -/* -** Parse the fts3 query expression found in buffer z, length n. This function -** returns either when the end of the buffer is reached or an unmatched -** closing bracket - ')' - is encountered. -** -** If successful, SQLITE_OK is returned, *ppExpr is set to point to the -** parsed form of the expression and *pnConsumed is set to the number of -** bytes read from buffer z. Otherwise, *ppExpr is set to 0 and SQLITE_NOMEM -** (out of memory error) or SQLITE_ERROR (parse error) is returned. -*/ -static int fts3ExprParse( - ParseContext *pParse, /* fts3 query parse context */ - const char *z, int n, /* Text of MATCH query */ - Fts3Expr **ppExpr, /* OUT: Parsed query structure */ - int *pnConsumed /* OUT: Number of bytes consumed */ -){ - Fts3Expr *pRet = 0; - Fts3Expr *pPrev = 0; - Fts3Expr *pNotBranch = 0; /* Only used in legacy parse mode */ - int nIn = n; - const char *zIn = z; - int rc = SQLITE_OK; - int isRequirePhrase = 1; - - while( rc==SQLITE_OK ){ - Fts3Expr *p = 0; - int nByte = 0; - rc = getNextNode(pParse, zIn, nIn, &p, &nByte); - if( rc==SQLITE_OK ){ - int isPhrase; - - if( !sqlite3_fts3_enable_parentheses - && p->eType==FTSQUERY_PHRASE && pParse->isNot - ){ - /* Create an implicit NOT operator. */ - Fts3Expr *pNot = fts3MallocZero(sizeof(Fts3Expr)); - if( !pNot ){ - sqlite3Fts3ExprFree(p); - rc = SQLITE_NOMEM; - goto exprparse_out; - } - pNot->eType = FTSQUERY_NOT; - pNot->pRight = p; - if( pNotBranch ){ - pNot->pLeft = pNotBranch; - } - pNotBranch = pNot; - p = pPrev; - }else{ - int eType = p->eType; - isPhrase = (eType==FTSQUERY_PHRASE || p->pLeft); - - /* The isRequirePhrase variable is set to true if a phrase or - ** an expression contained in parenthesis is required. If a - ** binary operator (AND, OR, NOT or NEAR) is encounted when - ** isRequirePhrase is set, this is a syntax error. - */ - if( !isPhrase && isRequirePhrase ){ - sqlite3Fts3ExprFree(p); - rc = SQLITE_ERROR; - goto exprparse_out; - } - - if( isPhrase && !isRequirePhrase ){ - /* Insert an implicit AND operator. */ - Fts3Expr *pAnd; - assert( pRet && pPrev ); - pAnd = fts3MallocZero(sizeof(Fts3Expr)); - if( !pAnd ){ - sqlite3Fts3ExprFree(p); - rc = SQLITE_NOMEM; - goto exprparse_out; - } - pAnd->eType = FTSQUERY_AND; - insertBinaryOperator(&pRet, pPrev, pAnd); - pPrev = pAnd; - } - - /* This test catches attempts to make either operand of a NEAR - ** operator something other than a phrase. For example, either of - ** the following: - ** - ** (bracketed expression) NEAR phrase - ** phrase NEAR (bracketed expression) - ** - ** Return an error in either case. - */ - if( pPrev && ( - (eType==FTSQUERY_NEAR && !isPhrase && pPrev->eType!=FTSQUERY_PHRASE) - || (eType!=FTSQUERY_PHRASE && isPhrase && pPrev->eType==FTSQUERY_NEAR) - )){ - sqlite3Fts3ExprFree(p); - rc = SQLITE_ERROR; - goto exprparse_out; - } - - if( isPhrase ){ - if( pRet ){ - assert( pPrev && pPrev->pLeft && pPrev->pRight==0 ); - pPrev->pRight = p; - p->pParent = pPrev; - }else{ - pRet = p; - } - }else{ - insertBinaryOperator(&pRet, pPrev, p); - } - isRequirePhrase = !isPhrase; - } - assert( nByte>0 ); - } - assert( rc!=SQLITE_OK || (nByte>0 && nByte<=nIn) ); - nIn -= nByte; - zIn += nByte; - pPrev = p; - } - - if( rc==SQLITE_DONE && pRet && isRequirePhrase ){ - rc = SQLITE_ERROR; - } - - if( rc==SQLITE_DONE ){ - rc = SQLITE_OK; - if( !sqlite3_fts3_enable_parentheses && pNotBranch ){ - if( !pRet ){ - rc = SQLITE_ERROR; - }else{ - Fts3Expr *pIter = pNotBranch; - while( pIter->pLeft ){ - pIter = pIter->pLeft; - } - pIter->pLeft = pRet; - pRet = pNotBranch; - } - } - } - *pnConsumed = n - nIn; - -exprparse_out: - if( rc!=SQLITE_OK ){ - sqlite3Fts3ExprFree(pRet); - sqlite3Fts3ExprFree(pNotBranch); - pRet = 0; - } - *ppExpr = pRet; - return rc; -} - -/* -** Parameters z and n contain a pointer to and length of a buffer containing -** an fts3 query expression, respectively. This function attempts to parse the -** query expression and create a tree of Fts3Expr structures representing the -** parsed expression. If successful, *ppExpr is set to point to the head -** of the parsed expression tree and SQLITE_OK is returned. If an error -** occurs, either SQLITE_NOMEM (out-of-memory error) or SQLITE_ERROR (parse -** error) is returned and *ppExpr is set to 0. -** -** If parameter n is a negative number, then z is assumed to point to a -** nul-terminated string and the length is determined using strlen(). -** -** The first parameter, pTokenizer, is passed the fts3 tokenizer module to -** use to normalize query tokens while parsing the expression. The azCol[] -** array, which is assumed to contain nCol entries, should contain the names -** of each column in the target fts3 table, in order from left to right. -** Column names must be nul-terminated strings. -** -** The iDefaultCol parameter should be passed the index of the table column -** that appears on the left-hand-side of the MATCH operator (the default -** column to match against for tokens for which a column name is not explicitly -** specified as part of the query string), or -1 if tokens may by default -** match any table column. -*/ -int sqlite3Fts3ExprParse( - sqlite3_tokenizer *pTokenizer, /* Tokenizer module */ - char **azCol, /* Array of column names for fts3 table */ - int bFts4, /* True to allow FTS4-only syntax */ - int nCol, /* Number of entries in azCol[] */ - int iDefaultCol, /* Default column to query */ - const char *z, int n, /* Text of MATCH query */ - Fts3Expr **ppExpr /* OUT: Parsed query structure */ -){ - int nParsed; - int rc; - ParseContext sParse; - sParse.pTokenizer = pTokenizer; - sParse.azCol = (const char **)azCol; - sParse.nCol = nCol; - sParse.iDefaultCol = iDefaultCol; - sParse.nNest = 0; - sParse.bFts4 = bFts4; - if( z==0 ){ - *ppExpr = 0; - return SQLITE_OK; - } - if( n<0 ){ - n = (int)strlen(z); - } - rc = fts3ExprParse(&sParse, z, n, ppExpr, &nParsed); - - /* Check for mismatched parenthesis */ - if( rc==SQLITE_OK && sParse.nNest ){ - rc = SQLITE_ERROR; - sqlite3Fts3ExprFree(*ppExpr); - *ppExpr = 0; - } - - return rc; -} - -/* -** Free a parsed fts3 query expression allocated by sqlite3Fts3ExprParse(). -*/ -void sqlite3Fts3ExprFree(Fts3Expr *p){ - if( p ){ - assert( p->eType==FTSQUERY_PHRASE || p->pPhrase==0 ); - sqlite3Fts3ExprFree(p->pLeft); - sqlite3Fts3ExprFree(p->pRight); - sqlite3Fts3EvalPhraseCleanup(p->pPhrase); - sqlite3_free(p->aMI); - sqlite3_free(p); - } -} - -/**************************************************************************** -***************************************************************************** -** Everything after this point is just test code. -*/ - -#ifdef SQLITE_TEST - -#include - -/* -** Function to query the hash-table of tokenizers (see README.tokenizers). -*/ -static int queryTestTokenizer( - sqlite3 *db, - const char *zName, - const sqlite3_tokenizer_module **pp -){ - int rc; - sqlite3_stmt *pStmt; - const char zSql[] = "SELECT fts3_tokenizer(?)"; - - *pp = 0; - rc = sqlite3_prepare_v2(db, zSql, -1, &pStmt, 0); - if( rc!=SQLITE_OK ){ - return rc; - } - - sqlite3_bind_text(pStmt, 1, zName, -1, SQLITE_STATIC); - if( SQLITE_ROW==sqlite3_step(pStmt) ){ - if( sqlite3_column_type(pStmt, 0)==SQLITE_BLOB ){ - memcpy((void *)pp, sqlite3_column_blob(pStmt, 0), sizeof(*pp)); - } - } - - return sqlite3_finalize(pStmt); -} - -/* -** Return a pointer to a buffer containing a text representation of the -** expression passed as the first argument. The buffer is obtained from -** sqlite3_malloc(). It is the responsibility of the caller to use -** sqlite3_free() to release the memory. If an OOM condition is encountered, -** NULL is returned. -** -** If the second argument is not NULL, then its contents are prepended to -** the returned expression text and then freed using sqlite3_free(). -*/ -static char *exprToString(Fts3Expr *pExpr, char *zBuf){ - switch( pExpr->eType ){ - case FTSQUERY_PHRASE: { - Fts3Phrase *pPhrase = pExpr->pPhrase; - int i; - zBuf = sqlite3_mprintf( - "%zPHRASE %d 0", zBuf, pPhrase->iColumn); - for(i=0; zBuf && inToken; i++){ - zBuf = sqlite3_mprintf("%z %.*s%s", zBuf, - pPhrase->aToken[i].n, pPhrase->aToken[i].z, - (pPhrase->aToken[i].isPrefix?"+":"") - ); - } - return zBuf; - } - - case FTSQUERY_NEAR: - zBuf = sqlite3_mprintf("%zNEAR/%d ", zBuf, pExpr->nNear); - break; - case FTSQUERY_NOT: - zBuf = sqlite3_mprintf("%zNOT ", zBuf); - break; - case FTSQUERY_AND: - zBuf = sqlite3_mprintf("%zAND ", zBuf); - break; - case FTSQUERY_OR: - zBuf = sqlite3_mprintf("%zOR ", zBuf); - break; - } - - if( zBuf ) zBuf = sqlite3_mprintf("%z{", zBuf); - if( zBuf ) zBuf = exprToString(pExpr->pLeft, zBuf); - if( zBuf ) zBuf = sqlite3_mprintf("%z} {", zBuf); - - if( zBuf ) zBuf = exprToString(pExpr->pRight, zBuf); - if( zBuf ) zBuf = sqlite3_mprintf("%z}", zBuf); - - return zBuf; -} - -/* -** This is the implementation of a scalar SQL function used to test the -** expression parser. It should be called as follows: -** -** fts3_exprtest(, , , ...); -** -** The first argument, , is the name of the fts3 tokenizer used -** to parse the query expression (see README.tokenizers). The second argument -** is the query expression to parse. Each subsequent argument is the name -** of a column of the fts3 table that the query expression may refer to. -** For example: -** -** SELECT fts3_exprtest('simple', 'Bill col2:Bloggs', 'col1', 'col2'); -*/ -static void fts3ExprTest( - sqlite3_context *context, - int argc, - sqlite3_value **argv -){ - sqlite3_tokenizer_module const *pModule = 0; - sqlite3_tokenizer *pTokenizer = 0; - int rc; - char **azCol = 0; - const char *zExpr; - int nExpr; - int nCol; - int ii; - Fts3Expr *pExpr; - char *zBuf = 0; - sqlite3 *db = sqlite3_context_db_handle(context); - - if( argc<3 ){ - sqlite3_result_error(context, - "Usage: fts3_exprtest(tokenizer, expr, col1, ...", -1 - ); - return; - } - - rc = queryTestTokenizer(db, - (const char *)sqlite3_value_text(argv[0]), &pModule); - if( rc==SQLITE_NOMEM ){ - sqlite3_result_error_nomem(context); - goto exprtest_out; - }else if( !pModule ){ - sqlite3_result_error(context, "No such tokenizer module", -1); - goto exprtest_out; - } - - rc = pModule->xCreate(0, 0, &pTokenizer); - assert( rc==SQLITE_NOMEM || rc==SQLITE_OK ); - if( rc==SQLITE_NOMEM ){ - sqlite3_result_error_nomem(context); - goto exprtest_out; - } - pTokenizer->pModule = pModule; - - zExpr = (const char *)sqlite3_value_text(argv[1]); - nExpr = sqlite3_value_bytes(argv[1]); - nCol = argc-2; - azCol = (char **)sqlite3_malloc(nCol*sizeof(char *)); - if( !azCol ){ - sqlite3_result_error_nomem(context); - goto exprtest_out; - } - for(ii=0; iixDestroy(pTokenizer); - } - sqlite3_free(azCol); -} - -/* -** Register the query expression parser test function fts3_exprtest() -** with database connection db. -*/ -int sqlite3Fts3ExprInitTestInterface(sqlite3* db){ - return sqlite3_create_function( - db, "fts3_exprtest", -1, SQLITE_UTF8, 0, fts3ExprTest, 0, 0 - ); -} - -#endif -#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_hash.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_hash.c deleted file mode 100644 index edfd7a0291..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_hash.c +++ /dev/null @@ -1,383 +0,0 @@ -/* -** 2001 September 22 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This is the implementation of generic hash-tables used in SQLite. -** We've modified it slightly to serve as a standalone hash table -** implementation for the full-text indexing module. -*/ - -/* -** The code in this file is only compiled if: -** -** * The FTS3 module is being built as an extension -** (in which case SQLITE_CORE is not defined), or -** -** * The FTS3 module is being built into the core of -** SQLite (in which case SQLITE_ENABLE_FTS3 is defined). -*/ -#include "fts3Int.h" -#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) - -#include -#include -#include - -#include "fts3_hash.h" - -/* -** Malloc and Free functions -*/ -static void *fts3HashMalloc(int n){ - void *p = sqlite3_malloc(n); - if( p ){ - memset(p, 0, n); - } - return p; -} -static void fts3HashFree(void *p){ - sqlite3_free(p); -} - -/* Turn bulk memory into a hash table object by initializing the -** fields of the Hash structure. -** -** "pNew" is a pointer to the hash table that is to be initialized. -** keyClass is one of the constants -** FTS3_HASH_BINARY or FTS3_HASH_STRING. The value of keyClass -** determines what kind of key the hash table will use. "copyKey" is -** true if the hash table should make its own private copy of keys and -** false if it should just use the supplied pointer. -*/ -void sqlite3Fts3HashInit(Fts3Hash *pNew, char keyClass, char copyKey){ - assert( pNew!=0 ); - assert( keyClass>=FTS3_HASH_STRING && keyClass<=FTS3_HASH_BINARY ); - pNew->keyClass = keyClass; - pNew->copyKey = copyKey; - pNew->first = 0; - pNew->count = 0; - pNew->htsize = 0; - pNew->ht = 0; -} - -/* Remove all entries from a hash table. Reclaim all memory. -** Call this routine to delete a hash table or to reset a hash table -** to the empty state. -*/ -void sqlite3Fts3HashClear(Fts3Hash *pH){ - Fts3HashElem *elem; /* For looping over all elements of the table */ - - assert( pH!=0 ); - elem = pH->first; - pH->first = 0; - fts3HashFree(pH->ht); - pH->ht = 0; - pH->htsize = 0; - while( elem ){ - Fts3HashElem *next_elem = elem->next; - if( pH->copyKey && elem->pKey ){ - fts3HashFree(elem->pKey); - } - fts3HashFree(elem); - elem = next_elem; - } - pH->count = 0; -} - -/* -** Hash and comparison functions when the mode is FTS3_HASH_STRING -*/ -static int fts3StrHash(const void *pKey, int nKey){ - const char *z = (const char *)pKey; - int h = 0; - if( nKey<=0 ) nKey = (int) strlen(z); - while( nKey > 0 ){ - h = (h<<3) ^ h ^ *z++; - nKey--; - } - return h & 0x7fffffff; -} -static int fts3StrCompare(const void *pKey1, int n1, const void *pKey2, int n2){ - if( n1!=n2 ) return 1; - return strncmp((const char*)pKey1,(const char*)pKey2,n1); -} - -/* -** Hash and comparison functions when the mode is FTS3_HASH_BINARY -*/ -static int fts3BinHash(const void *pKey, int nKey){ - int h = 0; - const char *z = (const char *)pKey; - while( nKey-- > 0 ){ - h = (h<<3) ^ h ^ *(z++); - } - return h & 0x7fffffff; -} -static int fts3BinCompare(const void *pKey1, int n1, const void *pKey2, int n2){ - if( n1!=n2 ) return 1; - return memcmp(pKey1,pKey2,n1); -} - -/* -** Return a pointer to the appropriate hash function given the key class. -** -** The C syntax in this function definition may be unfamilar to some -** programmers, so we provide the following additional explanation: -** -** The name of the function is "ftsHashFunction". The function takes a -** single parameter "keyClass". The return value of ftsHashFunction() -** is a pointer to another function. Specifically, the return value -** of ftsHashFunction() is a pointer to a function that takes two parameters -** with types "const void*" and "int" and returns an "int". -*/ -static int (*ftsHashFunction(int keyClass))(const void*,int){ - if( keyClass==FTS3_HASH_STRING ){ - return &fts3StrHash; - }else{ - assert( keyClass==FTS3_HASH_BINARY ); - return &fts3BinHash; - } -} - -/* -** Return a pointer to the appropriate hash function given the key class. -** -** For help in interpreted the obscure C code in the function definition, -** see the header comment on the previous function. -*/ -static int (*ftsCompareFunction(int keyClass))(const void*,int,const void*,int){ - if( keyClass==FTS3_HASH_STRING ){ - return &fts3StrCompare; - }else{ - assert( keyClass==FTS3_HASH_BINARY ); - return &fts3BinCompare; - } -} - -/* Link an element into the hash table -*/ -static void fts3HashInsertElement( - Fts3Hash *pH, /* The complete hash table */ - struct _fts3ht *pEntry, /* The entry into which pNew is inserted */ - Fts3HashElem *pNew /* The element to be inserted */ -){ - Fts3HashElem *pHead; /* First element already in pEntry */ - pHead = pEntry->chain; - if( pHead ){ - pNew->next = pHead; - pNew->prev = pHead->prev; - if( pHead->prev ){ pHead->prev->next = pNew; } - else { pH->first = pNew; } - pHead->prev = pNew; - }else{ - pNew->next = pH->first; - if( pH->first ){ pH->first->prev = pNew; } - pNew->prev = 0; - pH->first = pNew; - } - pEntry->count++; - pEntry->chain = pNew; -} - - -/* Resize the hash table so that it cantains "new_size" buckets. -** "new_size" must be a power of 2. The hash table might fail -** to resize if sqliteMalloc() fails. -** -** Return non-zero if a memory allocation error occurs. -*/ -static int fts3Rehash(Fts3Hash *pH, int new_size){ - struct _fts3ht *new_ht; /* The new hash table */ - Fts3HashElem *elem, *next_elem; /* For looping over existing elements */ - int (*xHash)(const void*,int); /* The hash function */ - - assert( (new_size & (new_size-1))==0 ); - new_ht = (struct _fts3ht *)fts3HashMalloc( new_size*sizeof(struct _fts3ht) ); - if( new_ht==0 ) return 1; - fts3HashFree(pH->ht); - pH->ht = new_ht; - pH->htsize = new_size; - xHash = ftsHashFunction(pH->keyClass); - for(elem=pH->first, pH->first=0; elem; elem = next_elem){ - int h = (*xHash)(elem->pKey, elem->nKey) & (new_size-1); - next_elem = elem->next; - fts3HashInsertElement(pH, &new_ht[h], elem); - } - return 0; -} - -/* This function (for internal use only) locates an element in an -** hash table that matches the given key. The hash for this key has -** already been computed and is passed as the 4th parameter. -*/ -static Fts3HashElem *fts3FindElementByHash( - const Fts3Hash *pH, /* The pH to be searched */ - const void *pKey, /* The key we are searching for */ - int nKey, - int h /* The hash for this key. */ -){ - Fts3HashElem *elem; /* Used to loop thru the element list */ - int count; /* Number of elements left to test */ - int (*xCompare)(const void*,int,const void*,int); /* comparison function */ - - if( pH->ht ){ - struct _fts3ht *pEntry = &pH->ht[h]; - elem = pEntry->chain; - count = pEntry->count; - xCompare = ftsCompareFunction(pH->keyClass); - while( count-- && elem ){ - if( (*xCompare)(elem->pKey,elem->nKey,pKey,nKey)==0 ){ - return elem; - } - elem = elem->next; - } - } - return 0; -} - -/* Remove a single entry from the hash table given a pointer to that -** element and a hash on the element's key. -*/ -static void fts3RemoveElementByHash( - Fts3Hash *pH, /* The pH containing "elem" */ - Fts3HashElem* elem, /* The element to be removed from the pH */ - int h /* Hash value for the element */ -){ - struct _fts3ht *pEntry; - if( elem->prev ){ - elem->prev->next = elem->next; - }else{ - pH->first = elem->next; - } - if( elem->next ){ - elem->next->prev = elem->prev; - } - pEntry = &pH->ht[h]; - if( pEntry->chain==elem ){ - pEntry->chain = elem->next; - } - pEntry->count--; - if( pEntry->count<=0 ){ - pEntry->chain = 0; - } - if( pH->copyKey && elem->pKey ){ - fts3HashFree(elem->pKey); - } - fts3HashFree( elem ); - pH->count--; - if( pH->count<=0 ){ - assert( pH->first==0 ); - assert( pH->count==0 ); - fts3HashClear(pH); - } -} - -Fts3HashElem *sqlite3Fts3HashFindElem( - const Fts3Hash *pH, - const void *pKey, - int nKey -){ - int h; /* A hash on key */ - int (*xHash)(const void*,int); /* The hash function */ - - if( pH==0 || pH->ht==0 ) return 0; - xHash = ftsHashFunction(pH->keyClass); - assert( xHash!=0 ); - h = (*xHash)(pKey,nKey); - assert( (pH->htsize & (pH->htsize-1))==0 ); - return fts3FindElementByHash(pH,pKey,nKey, h & (pH->htsize-1)); -} - -/* -** Attempt to locate an element of the hash table pH with a key -** that matches pKey,nKey. Return the data for this element if it is -** found, or NULL if there is no match. -*/ -void *sqlite3Fts3HashFind(const Fts3Hash *pH, const void *pKey, int nKey){ - Fts3HashElem *pElem; /* The element that matches key (if any) */ - - pElem = sqlite3Fts3HashFindElem(pH, pKey, nKey); - return pElem ? pElem->data : 0; -} - -/* Insert an element into the hash table pH. The key is pKey,nKey -** and the data is "data". -** -** If no element exists with a matching key, then a new -** element is created. A copy of the key is made if the copyKey -** flag is set. NULL is returned. -** -** If another element already exists with the same key, then the -** new data replaces the old data and the old data is returned. -** The key is not copied in this instance. If a malloc fails, then -** the new data is returned and the hash table is unchanged. -** -** If the "data" parameter to this function is NULL, then the -** element corresponding to "key" is removed from the hash table. -*/ -void *sqlite3Fts3HashInsert( - Fts3Hash *pH, /* The hash table to insert into */ - const void *pKey, /* The key */ - int nKey, /* Number of bytes in the key */ - void *data /* The data */ -){ - int hraw; /* Raw hash value of the key */ - int h; /* the hash of the key modulo hash table size */ - Fts3HashElem *elem; /* Used to loop thru the element list */ - Fts3HashElem *new_elem; /* New element added to the pH */ - int (*xHash)(const void*,int); /* The hash function */ - - assert( pH!=0 ); - xHash = ftsHashFunction(pH->keyClass); - assert( xHash!=0 ); - hraw = (*xHash)(pKey, nKey); - assert( (pH->htsize & (pH->htsize-1))==0 ); - h = hraw & (pH->htsize-1); - elem = fts3FindElementByHash(pH,pKey,nKey,h); - if( elem ){ - void *old_data = elem->data; - if( data==0 ){ - fts3RemoveElementByHash(pH,elem,h); - }else{ - elem->data = data; - } - return old_data; - } - if( data==0 ) return 0; - if( (pH->htsize==0 && fts3Rehash(pH,8)) - || (pH->count>=pH->htsize && fts3Rehash(pH, pH->htsize*2)) - ){ - pH->count = 0; - return data; - } - assert( pH->htsize>0 ); - new_elem = (Fts3HashElem*)fts3HashMalloc( sizeof(Fts3HashElem) ); - if( new_elem==0 ) return data; - if( pH->copyKey && pKey!=0 ){ - new_elem->pKey = fts3HashMalloc( nKey ); - if( new_elem->pKey==0 ){ - fts3HashFree(new_elem); - return data; - } - memcpy((void*)new_elem->pKey, pKey, nKey); - }else{ - new_elem->pKey = (void*)pKey; - } - new_elem->nKey = nKey; - pH->count++; - assert( pH->htsize>0 ); - assert( (pH->htsize & (pH->htsize-1))==0 ); - h = hraw & (pH->htsize-1); - fts3HashInsertElement(pH, &pH->ht[h], new_elem); - new_elem->data = data; - return 0; -} - -#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_hash.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_hash.h deleted file mode 100644 index 6a7623fc64..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_hash.h +++ /dev/null @@ -1,112 +0,0 @@ -/* -** 2001 September 22 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This is the header file for the generic hash-table implemenation -** used in SQLite. We've modified it slightly to serve as a standalone -** hash table implementation for the full-text indexing module. -** -*/ -#ifndef _FTS3_HASH_H_ -#define _FTS3_HASH_H_ - -/* Forward declarations of structures. */ -typedef struct Fts3Hash Fts3Hash; -typedef struct Fts3HashElem Fts3HashElem; - -/* A complete hash table is an instance of the following structure. -** The internals of this structure are intended to be opaque -- client -** code should not attempt to access or modify the fields of this structure -** directly. Change this structure only by using the routines below. -** However, many of the "procedures" and "functions" for modifying and -** accessing this structure are really macros, so we can't really make -** this structure opaque. -*/ -struct Fts3Hash { - char keyClass; /* HASH_INT, _POINTER, _STRING, _BINARY */ - char copyKey; /* True if copy of key made on insert */ - int count; /* Number of entries in this table */ - Fts3HashElem *first; /* The first element of the array */ - int htsize; /* Number of buckets in the hash table */ - struct _fts3ht { /* the hash table */ - int count; /* Number of entries with this hash */ - Fts3HashElem *chain; /* Pointer to first entry with this hash */ - } *ht; -}; - -/* Each element in the hash table is an instance of the following -** structure. All elements are stored on a single doubly-linked list. -** -** Again, this structure is intended to be opaque, but it can't really -** be opaque because it is used by macros. -*/ -struct Fts3HashElem { - Fts3HashElem *next, *prev; /* Next and previous elements in the table */ - void *data; /* Data associated with this element */ - void *pKey; int nKey; /* Key associated with this element */ -}; - -/* -** There are 2 different modes of operation for a hash table: -** -** FTS3_HASH_STRING pKey points to a string that is nKey bytes long -** (including the null-terminator, if any). Case -** is respected in comparisons. -** -** FTS3_HASH_BINARY pKey points to binary data nKey bytes long. -** memcmp() is used to compare keys. -** -** A copy of the key is made if the copyKey parameter to fts3HashInit is 1. -*/ -#define FTS3_HASH_STRING 1 -#define FTS3_HASH_BINARY 2 - -/* -** Access routines. To delete, insert a NULL pointer. -*/ -void sqlite3Fts3HashInit(Fts3Hash *pNew, char keyClass, char copyKey); -void *sqlite3Fts3HashInsert(Fts3Hash*, const void *pKey, int nKey, void *pData); -void *sqlite3Fts3HashFind(const Fts3Hash*, const void *pKey, int nKey); -void sqlite3Fts3HashClear(Fts3Hash*); -Fts3HashElem *sqlite3Fts3HashFindElem(const Fts3Hash *, const void *, int); - -/* -** Shorthand for the functions above -*/ -#define fts3HashInit sqlite3Fts3HashInit -#define fts3HashInsert sqlite3Fts3HashInsert -#define fts3HashFind sqlite3Fts3HashFind -#define fts3HashClear sqlite3Fts3HashClear -#define fts3HashFindElem sqlite3Fts3HashFindElem - -/* -** Macros for looping over all elements of a hash table. The idiom is -** like this: -** -** Fts3Hash h; -** Fts3HashElem *p; -** ... -** for(p=fts3HashFirst(&h); p; p=fts3HashNext(p)){ -** SomeStructure *pData = fts3HashData(p); -** // do something with pData -** } -*/ -#define fts3HashFirst(H) ((H)->first) -#define fts3HashNext(E) ((E)->next) -#define fts3HashData(E) ((E)->data) -#define fts3HashKey(E) ((E)->pKey) -#define fts3HashKeysize(E) ((E)->nKey) - -/* -** Number of entries in a hash table -*/ -#define fts3HashCount(H) ((H)->count) - -#endif /* _FTS3_HASH_H_ */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_icu.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_icu.c deleted file mode 100644 index 110560e8f3..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_icu.c +++ /dev/null @@ -1,258 +0,0 @@ -/* -** 2007 June 22 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file implements a tokenizer for fts3 based on the ICU library. -*/ -#include "fts3Int.h" -#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) -#ifdef SQLITE_ENABLE_ICU - -#include -#include -#include "fts3_tokenizer.h" - -#include -#include -#include -#include - -typedef struct IcuTokenizer IcuTokenizer; -typedef struct IcuCursor IcuCursor; - -struct IcuTokenizer { - sqlite3_tokenizer base; - char *zLocale; -}; - -struct IcuCursor { - sqlite3_tokenizer_cursor base; - - UBreakIterator *pIter; /* ICU break-iterator object */ - int nChar; /* Number of UChar elements in pInput */ - UChar *aChar; /* Copy of input using utf-16 encoding */ - int *aOffset; /* Offsets of each character in utf-8 input */ - - int nBuffer; - char *zBuffer; - - int iToken; -}; - -/* -** Create a new tokenizer instance. -*/ -static int icuCreate( - int argc, /* Number of entries in argv[] */ - const char * const *argv, /* Tokenizer creation arguments */ - sqlite3_tokenizer **ppTokenizer /* OUT: Created tokenizer */ -){ - IcuTokenizer *p; - int n = 0; - - if( argc>0 ){ - n = strlen(argv[0])+1; - } - p = (IcuTokenizer *)sqlite3_malloc(sizeof(IcuTokenizer)+n); - if( !p ){ - return SQLITE_NOMEM; - } - memset(p, 0, sizeof(IcuTokenizer)); - - if( n ){ - p->zLocale = (char *)&p[1]; - memcpy(p->zLocale, argv[0], n); - } - - *ppTokenizer = (sqlite3_tokenizer *)p; - - return SQLITE_OK; -} - -/* -** Destroy a tokenizer -*/ -static int icuDestroy(sqlite3_tokenizer *pTokenizer){ - IcuTokenizer *p = (IcuTokenizer *)pTokenizer; - sqlite3_free(p); - return SQLITE_OK; -} - -/* -** Prepare to begin tokenizing a particular string. The input -** string to be tokenized is pInput[0..nBytes-1]. A cursor -** used to incrementally tokenize this string is returned in -** *ppCursor. -*/ -static int icuOpen( - sqlite3_tokenizer *pTokenizer, /* The tokenizer */ - const char *zInput, /* Input string */ - int nInput, /* Length of zInput in bytes */ - sqlite3_tokenizer_cursor **ppCursor /* OUT: Tokenization cursor */ -){ - IcuTokenizer *p = (IcuTokenizer *)pTokenizer; - IcuCursor *pCsr; - - const int32_t opt = U_FOLD_CASE_DEFAULT; - UErrorCode status = U_ZERO_ERROR; - int nChar; - - UChar32 c; - int iInput = 0; - int iOut = 0; - - *ppCursor = 0; - - if( nInput<0 ){ - nInput = strlen(zInput); - } - nChar = nInput+1; - pCsr = (IcuCursor *)sqlite3_malloc( - sizeof(IcuCursor) + /* IcuCursor */ - nChar * sizeof(UChar) + /* IcuCursor.aChar[] */ - (nChar+1) * sizeof(int) /* IcuCursor.aOffset[] */ - ); - if( !pCsr ){ - return SQLITE_NOMEM; - } - memset(pCsr, 0, sizeof(IcuCursor)); - pCsr->aChar = (UChar *)&pCsr[1]; - pCsr->aOffset = (int *)&pCsr->aChar[nChar]; - - pCsr->aOffset[iOut] = iInput; - U8_NEXT(zInput, iInput, nInput, c); - while( c>0 ){ - int isError = 0; - c = u_foldCase(c, opt); - U16_APPEND(pCsr->aChar, iOut, nChar, c, isError); - if( isError ){ - sqlite3_free(pCsr); - return SQLITE_ERROR; - } - pCsr->aOffset[iOut] = iInput; - - if( iInputpIter = ubrk_open(UBRK_WORD, p->zLocale, pCsr->aChar, iOut, &status); - if( !U_SUCCESS(status) ){ - sqlite3_free(pCsr); - return SQLITE_ERROR; - } - pCsr->nChar = iOut; - - ubrk_first(pCsr->pIter); - *ppCursor = (sqlite3_tokenizer_cursor *)pCsr; - return SQLITE_OK; -} - -/* -** Close a tokenization cursor previously opened by a call to icuOpen(). -*/ -static int icuClose(sqlite3_tokenizer_cursor *pCursor){ - IcuCursor *pCsr = (IcuCursor *)pCursor; - ubrk_close(pCsr->pIter); - sqlite3_free(pCsr->zBuffer); - sqlite3_free(pCsr); - return SQLITE_OK; -} - -/* -** Extract the next token from a tokenization cursor. -*/ -static int icuNext( - sqlite3_tokenizer_cursor *pCursor, /* Cursor returned by simpleOpen */ - const char **ppToken, /* OUT: *ppToken is the token text */ - int *pnBytes, /* OUT: Number of bytes in token */ - int *piStartOffset, /* OUT: Starting offset of token */ - int *piEndOffset, /* OUT: Ending offset of token */ - int *piPosition /* OUT: Position integer of token */ -){ - IcuCursor *pCsr = (IcuCursor *)pCursor; - - int iStart = 0; - int iEnd = 0; - int nByte = 0; - - while( iStart==iEnd ){ - UChar32 c; - - iStart = ubrk_current(pCsr->pIter); - iEnd = ubrk_next(pCsr->pIter); - if( iEnd==UBRK_DONE ){ - return SQLITE_DONE; - } - - while( iStartaChar, iWhite, pCsr->nChar, c); - if( u_isspace(c) ){ - iStart = iWhite; - }else{ - break; - } - } - assert(iStart<=iEnd); - } - - do { - UErrorCode status = U_ZERO_ERROR; - if( nByte ){ - char *zNew = sqlite3_realloc(pCsr->zBuffer, nByte); - if( !zNew ){ - return SQLITE_NOMEM; - } - pCsr->zBuffer = zNew; - pCsr->nBuffer = nByte; - } - - u_strToUTF8( - pCsr->zBuffer, pCsr->nBuffer, &nByte, /* Output vars */ - &pCsr->aChar[iStart], iEnd-iStart, /* Input vars */ - &status /* Output success/failure */ - ); - } while( nByte>pCsr->nBuffer ); - - *ppToken = pCsr->zBuffer; - *pnBytes = nByte; - *piStartOffset = pCsr->aOffset[iStart]; - *piEndOffset = pCsr->aOffset[iEnd]; - *piPosition = pCsr->iToken++; - - return SQLITE_OK; -} - -/* -** The set of routines that implement the simple tokenizer -*/ -static const sqlite3_tokenizer_module icuTokenizerModule = { - 0, /* iVersion */ - icuCreate, /* xCreate */ - icuDestroy, /* xCreate */ - icuOpen, /* xOpen */ - icuClose, /* xClose */ - icuNext, /* xNext */ -}; - -/* -** Set *ppModule to point at the implementation of the ICU tokenizer. -*/ -void sqlite3Fts3IcuTokenizerModule( - sqlite3_tokenizer_module const**ppModule -){ - *ppModule = &icuTokenizerModule; -} - -#endif /* defined(SQLITE_ENABLE_ICU) */ -#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_porter.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_porter.c deleted file mode 100644 index b10f54e410..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_porter.c +++ /dev/null @@ -1,645 +0,0 @@ -/* -** 2006 September 30 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** Implementation of the full-text-search tokenizer that implements -** a Porter stemmer. -*/ - -/* -** The code in this file is only compiled if: -** -** * The FTS3 module is being built as an extension -** (in which case SQLITE_CORE is not defined), or -** -** * The FTS3 module is being built into the core of -** SQLite (in which case SQLITE_ENABLE_FTS3 is defined). -*/ -#include "fts3Int.h" -#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) - -#include -#include -#include -#include - -#include "fts3_tokenizer.h" - -/* -** Class derived from sqlite3_tokenizer -*/ -typedef struct porter_tokenizer { - sqlite3_tokenizer base; /* Base class */ -} porter_tokenizer; - -/* -** Class derived from sqlit3_tokenizer_cursor -*/ -typedef struct porter_tokenizer_cursor { - sqlite3_tokenizer_cursor base; - const char *zInput; /* input we are tokenizing */ - int nInput; /* size of the input */ - int iOffset; /* current position in zInput */ - int iToken; /* index of next token to be returned */ - char *zToken; /* storage for current token */ - int nAllocated; /* space allocated to zToken buffer */ -} porter_tokenizer_cursor; - - -/* -** Create a new tokenizer instance. -*/ -static int porterCreate( - int argc, const char * const *argv, - sqlite3_tokenizer **ppTokenizer -){ - porter_tokenizer *t; - - UNUSED_PARAMETER(argc); - UNUSED_PARAMETER(argv); - - t = (porter_tokenizer *) sqlite3_malloc(sizeof(*t)); - if( t==NULL ) return SQLITE_NOMEM; - memset(t, 0, sizeof(*t)); - *ppTokenizer = &t->base; - return SQLITE_OK; -} - -/* -** Destroy a tokenizer -*/ -static int porterDestroy(sqlite3_tokenizer *pTokenizer){ - sqlite3_free(pTokenizer); - return SQLITE_OK; -} - -/* -** Prepare to begin tokenizing a particular string. The input -** string to be tokenized is zInput[0..nInput-1]. A cursor -** used to incrementally tokenize this string is returned in -** *ppCursor. -*/ -static int porterOpen( - sqlite3_tokenizer *pTokenizer, /* The tokenizer */ - const char *zInput, int nInput, /* String to be tokenized */ - sqlite3_tokenizer_cursor **ppCursor /* OUT: Tokenization cursor */ -){ - porter_tokenizer_cursor *c; - - UNUSED_PARAMETER(pTokenizer); - - c = (porter_tokenizer_cursor *) sqlite3_malloc(sizeof(*c)); - if( c==NULL ) return SQLITE_NOMEM; - - c->zInput = zInput; - if( zInput==0 ){ - c->nInput = 0; - }else if( nInput<0 ){ - c->nInput = (int)strlen(zInput); - }else{ - c->nInput = nInput; - } - c->iOffset = 0; /* start tokenizing at the beginning */ - c->iToken = 0; - c->zToken = NULL; /* no space allocated, yet. */ - c->nAllocated = 0; - - *ppCursor = &c->base; - return SQLITE_OK; -} - -/* -** Close a tokenization cursor previously opened by a call to -** porterOpen() above. -*/ -static int porterClose(sqlite3_tokenizer_cursor *pCursor){ - porter_tokenizer_cursor *c = (porter_tokenizer_cursor *) pCursor; - sqlite3_free(c->zToken); - sqlite3_free(c); - return SQLITE_OK; -} -/* -** Vowel or consonant -*/ -static const char cType[] = { - 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, - 1, 1, 1, 2, 1 -}; - -/* -** isConsonant() and isVowel() determine if their first character in -** the string they point to is a consonant or a vowel, according -** to Porter ruls. -** -** A consonate is any letter other than 'a', 'e', 'i', 'o', or 'u'. -** 'Y' is a consonant unless it follows another consonant, -** in which case it is a vowel. -** -** In these routine, the letters are in reverse order. So the 'y' rule -** is that 'y' is a consonant unless it is followed by another -** consonent. -*/ -static int isVowel(const char*); -static int isConsonant(const char *z){ - int j; - char x = *z; - if( x==0 ) return 0; - assert( x>='a' && x<='z' ); - j = cType[x-'a']; - if( j<2 ) return j; - return z[1]==0 || isVowel(z + 1); -} -static int isVowel(const char *z){ - int j; - char x = *z; - if( x==0 ) return 0; - assert( x>='a' && x<='z' ); - j = cType[x-'a']; - if( j<2 ) return 1-j; - return isConsonant(z + 1); -} - -/* -** Let any sequence of one or more vowels be represented by V and let -** C be sequence of one or more consonants. Then every word can be -** represented as: -** -** [C] (VC){m} [V] -** -** In prose: A word is an optional consonant followed by zero or -** vowel-consonant pairs followed by an optional vowel. "m" is the -** number of vowel consonant pairs. This routine computes the value -** of m for the first i bytes of a word. -** -** Return true if the m-value for z is 1 or more. In other words, -** return true if z contains at least one vowel that is followed -** by a consonant. -** -** In this routine z[] is in reverse order. So we are really looking -** for an instance of of a consonant followed by a vowel. -*/ -static int m_gt_0(const char *z){ - while( isVowel(z) ){ z++; } - if( *z==0 ) return 0; - while( isConsonant(z) ){ z++; } - return *z!=0; -} - -/* Like mgt0 above except we are looking for a value of m which is -** exactly 1 -*/ -static int m_eq_1(const char *z){ - while( isVowel(z) ){ z++; } - if( *z==0 ) return 0; - while( isConsonant(z) ){ z++; } - if( *z==0 ) return 0; - while( isVowel(z) ){ z++; } - if( *z==0 ) return 1; - while( isConsonant(z) ){ z++; } - return *z==0; -} - -/* Like mgt0 above except we are looking for a value of m>1 instead -** or m>0 -*/ -static int m_gt_1(const char *z){ - while( isVowel(z) ){ z++; } - if( *z==0 ) return 0; - while( isConsonant(z) ){ z++; } - if( *z==0 ) return 0; - while( isVowel(z) ){ z++; } - if( *z==0 ) return 0; - while( isConsonant(z) ){ z++; } - return *z!=0; -} - -/* -** Return TRUE if there is a vowel anywhere within z[0..n-1] -*/ -static int hasVowel(const char *z){ - while( isConsonant(z) ){ z++; } - return *z!=0; -} - -/* -** Return TRUE if the word ends in a double consonant. -** -** The text is reversed here. So we are really looking at -** the first two characters of z[]. -*/ -static int doubleConsonant(const char *z){ - return isConsonant(z) && z[0]==z[1]; -} - -/* -** Return TRUE if the word ends with three letters which -** are consonant-vowel-consonent and where the final consonant -** is not 'w', 'x', or 'y'. -** -** The word is reversed here. So we are really checking the -** first three letters and the first one cannot be in [wxy]. -*/ -static int star_oh(const char *z){ - return - isConsonant(z) && - z[0]!='w' && z[0]!='x' && z[0]!='y' && - isVowel(z+1) && - isConsonant(z+2); -} - -/* -** If the word ends with zFrom and xCond() is true for the stem -** of the word that preceeds the zFrom ending, then change the -** ending to zTo. -** -** The input word *pz and zFrom are both in reverse order. zTo -** is in normal order. -** -** Return TRUE if zFrom matches. Return FALSE if zFrom does not -** match. Not that TRUE is returned even if xCond() fails and -** no substitution occurs. -*/ -static int stem( - char **pz, /* The word being stemmed (Reversed) */ - const char *zFrom, /* If the ending matches this... (Reversed) */ - const char *zTo, /* ... change the ending to this (not reversed) */ - int (*xCond)(const char*) /* Condition that must be true */ -){ - char *z = *pz; - while( *zFrom && *zFrom==*z ){ z++; zFrom++; } - if( *zFrom!=0 ) return 0; - if( xCond && !xCond(z) ) return 1; - while( *zTo ){ - *(--z) = *(zTo++); - } - *pz = z; - return 1; -} - -/* -** This is the fallback stemmer used when the porter stemmer is -** inappropriate. The input word is copied into the output with -** US-ASCII case folding. If the input word is too long (more -** than 20 bytes if it contains no digits or more than 6 bytes if -** it contains digits) then word is truncated to 20 or 6 bytes -** by taking 10 or 3 bytes from the beginning and end. -*/ -static void copy_stemmer(const char *zIn, int nIn, char *zOut, int *pnOut){ - int i, mx, j; - int hasDigit = 0; - for(i=0; i='A' && c<='Z' ){ - zOut[i] = c - 'A' + 'a'; - }else{ - if( c>='0' && c<='9' ) hasDigit = 1; - zOut[i] = c; - } - } - mx = hasDigit ? 3 : 10; - if( nIn>mx*2 ){ - for(j=mx, i=nIn-mx; i=(int)sizeof(zReverse)-7 ){ - /* The word is too big or too small for the porter stemmer. - ** Fallback to the copy stemmer */ - copy_stemmer(zIn, nIn, zOut, pnOut); - return; - } - for(i=0, j=sizeof(zReverse)-6; i='A' && c<='Z' ){ - zReverse[j] = c + 'a' - 'A'; - }else if( c>='a' && c<='z' ){ - zReverse[j] = c; - }else{ - /* The use of a character not in [a-zA-Z] means that we fallback - ** to the copy stemmer */ - copy_stemmer(zIn, nIn, zOut, pnOut); - return; - } - } - memset(&zReverse[sizeof(zReverse)-5], 0, 5); - z = &zReverse[j+1]; - - - /* Step 1a */ - if( z[0]=='s' ){ - if( - !stem(&z, "sess", "ss", 0) && - !stem(&z, "sei", "i", 0) && - !stem(&z, "ss", "ss", 0) - ){ - z++; - } - } - - /* Step 1b */ - z2 = z; - if( stem(&z, "dee", "ee", m_gt_0) ){ - /* Do nothing. The work was all in the test */ - }else if( - (stem(&z, "gni", "", hasVowel) || stem(&z, "de", "", hasVowel)) - && z!=z2 - ){ - if( stem(&z, "ta", "ate", 0) || - stem(&z, "lb", "ble", 0) || - stem(&z, "zi", "ize", 0) ){ - /* Do nothing. The work was all in the test */ - }else if( doubleConsonant(z) && (*z!='l' && *z!='s' && *z!='z') ){ - z++; - }else if( m_eq_1(z) && star_oh(z) ){ - *(--z) = 'e'; - } - } - - /* Step 1c */ - if( z[0]=='y' && hasVowel(z+1) ){ - z[0] = 'i'; - } - - /* Step 2 */ - switch( z[1] ){ - case 'a': - stem(&z, "lanoita", "ate", m_gt_0) || - stem(&z, "lanoit", "tion", m_gt_0); - break; - case 'c': - stem(&z, "icne", "ence", m_gt_0) || - stem(&z, "icna", "ance", m_gt_0); - break; - case 'e': - stem(&z, "rezi", "ize", m_gt_0); - break; - case 'g': - stem(&z, "igol", "log", m_gt_0); - break; - case 'l': - stem(&z, "ilb", "ble", m_gt_0) || - stem(&z, "illa", "al", m_gt_0) || - stem(&z, "iltne", "ent", m_gt_0) || - stem(&z, "ile", "e", m_gt_0) || - stem(&z, "ilsuo", "ous", m_gt_0); - break; - case 'o': - stem(&z, "noitazi", "ize", m_gt_0) || - stem(&z, "noita", "ate", m_gt_0) || - stem(&z, "rota", "ate", m_gt_0); - break; - case 's': - stem(&z, "msila", "al", m_gt_0) || - stem(&z, "ssenevi", "ive", m_gt_0) || - stem(&z, "ssenluf", "ful", m_gt_0) || - stem(&z, "ssensuo", "ous", m_gt_0); - break; - case 't': - stem(&z, "itila", "al", m_gt_0) || - stem(&z, "itivi", "ive", m_gt_0) || - stem(&z, "itilib", "ble", m_gt_0); - break; - } - - /* Step 3 */ - switch( z[0] ){ - case 'e': - stem(&z, "etaci", "ic", m_gt_0) || - stem(&z, "evita", "", m_gt_0) || - stem(&z, "ezila", "al", m_gt_0); - break; - case 'i': - stem(&z, "itici", "ic", m_gt_0); - break; - case 'l': - stem(&z, "laci", "ic", m_gt_0) || - stem(&z, "luf", "", m_gt_0); - break; - case 's': - stem(&z, "ssen", "", m_gt_0); - break; - } - - /* Step 4 */ - switch( z[1] ){ - case 'a': - if( z[0]=='l' && m_gt_1(z+2) ){ - z += 2; - } - break; - case 'c': - if( z[0]=='e' && z[2]=='n' && (z[3]=='a' || z[3]=='e') && m_gt_1(z+4) ){ - z += 4; - } - break; - case 'e': - if( z[0]=='r' && m_gt_1(z+2) ){ - z += 2; - } - break; - case 'i': - if( z[0]=='c' && m_gt_1(z+2) ){ - z += 2; - } - break; - case 'l': - if( z[0]=='e' && z[2]=='b' && (z[3]=='a' || z[3]=='i') && m_gt_1(z+4) ){ - z += 4; - } - break; - case 'n': - if( z[0]=='t' ){ - if( z[2]=='a' ){ - if( m_gt_1(z+3) ){ - z += 3; - } - }else if( z[2]=='e' ){ - stem(&z, "tneme", "", m_gt_1) || - stem(&z, "tnem", "", m_gt_1) || - stem(&z, "tne", "", m_gt_1); - } - } - break; - case 'o': - if( z[0]=='u' ){ - if( m_gt_1(z+2) ){ - z += 2; - } - }else if( z[3]=='s' || z[3]=='t' ){ - stem(&z, "noi", "", m_gt_1); - } - break; - case 's': - if( z[0]=='m' && z[2]=='i' && m_gt_1(z+3) ){ - z += 3; - } - break; - case 't': - stem(&z, "eta", "", m_gt_1) || - stem(&z, "iti", "", m_gt_1); - break; - case 'u': - if( z[0]=='s' && z[2]=='o' && m_gt_1(z+3) ){ - z += 3; - } - break; - case 'v': - case 'z': - if( z[0]=='e' && z[2]=='i' && m_gt_1(z+3) ){ - z += 3; - } - break; - } - - /* Step 5a */ - if( z[0]=='e' ){ - if( m_gt_1(z+1) ){ - z++; - }else if( m_eq_1(z+1) && !star_oh(z+1) ){ - z++; - } - } - - /* Step 5b */ - if( m_gt_1(z) && z[0]=='l' && z[1]=='l' ){ - z++; - } - - /* z[] is now the stemmed word in reverse order. Flip it back - ** around into forward order and return. - */ - *pnOut = i = (int)strlen(z); - zOut[i] = 0; - while( *z ){ - zOut[--i] = *(z++); - } -} - -/* -** Characters that can be part of a token. We assume any character -** whose value is greater than 0x80 (any UTF character) can be -** part of a token. In other words, delimiters all must have -** values of 0x7f or lower. -*/ -static const char porterIdChar[] = { -/* x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 xA xB xC xD xE xF */ - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, /* 3x */ - 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 4x */ - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, /* 5x */ - 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 6x */ - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, /* 7x */ -}; -#define isDelim(C) (((ch=C)&0x80)==0 && (ch<0x30 || !porterIdChar[ch-0x30])) - -/* -** Extract the next token from a tokenization cursor. The cursor must -** have been opened by a prior call to porterOpen(). -*/ -static int porterNext( - sqlite3_tokenizer_cursor *pCursor, /* Cursor returned by porterOpen */ - const char **pzToken, /* OUT: *pzToken is the token text */ - int *pnBytes, /* OUT: Number of bytes in token */ - int *piStartOffset, /* OUT: Starting offset of token */ - int *piEndOffset, /* OUT: Ending offset of token */ - int *piPosition /* OUT: Position integer of token */ -){ - porter_tokenizer_cursor *c = (porter_tokenizer_cursor *) pCursor; - const char *z = c->zInput; - - while( c->iOffsetnInput ){ - int iStartOffset, ch; - - /* Scan past delimiter characters */ - while( c->iOffsetnInput && isDelim(z[c->iOffset]) ){ - c->iOffset++; - } - - /* Count non-delimiter characters. */ - iStartOffset = c->iOffset; - while( c->iOffsetnInput && !isDelim(z[c->iOffset]) ){ - c->iOffset++; - } - - if( c->iOffset>iStartOffset ){ - int n = c->iOffset-iStartOffset; - if( n>c->nAllocated ){ - char *pNew; - c->nAllocated = n+20; - pNew = sqlite3_realloc(c->zToken, c->nAllocated); - if( !pNew ) return SQLITE_NOMEM; - c->zToken = pNew; - } - porter_stemmer(&z[iStartOffset], n, c->zToken, pnBytes); - *pzToken = c->zToken; - *piStartOffset = iStartOffset; - *piEndOffset = c->iOffset; - *piPosition = c->iToken++; - return SQLITE_OK; - } - } - return SQLITE_DONE; -} - -/* -** The set of routines that implement the porter-stemmer tokenizer -*/ -static const sqlite3_tokenizer_module porterTokenizerModule = { - 0, - porterCreate, - porterDestroy, - porterOpen, - porterClose, - porterNext, -}; - -/* -** Allocate a new porter tokenizer. Return a pointer to the new -** tokenizer in *ppModule -*/ -void sqlite3Fts3PorterTokenizerModule( - sqlite3_tokenizer_module const**ppModule -){ - *ppModule = &porterTokenizerModule; -} - -#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_snippet.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_snippet.c deleted file mode 100644 index 150881ab91..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_snippet.c +++ /dev/null @@ -1,1500 +0,0 @@ -/* -** 2009 Oct 23 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -*/ - -#include "fts3Int.h" -#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) - -#include -#include - -/* -** Characters that may appear in the second argument to matchinfo(). -*/ -#define FTS3_MATCHINFO_NPHRASE 'p' /* 1 value */ -#define FTS3_MATCHINFO_NCOL 'c' /* 1 value */ -#define FTS3_MATCHINFO_NDOC 'n' /* 1 value */ -#define FTS3_MATCHINFO_AVGLENGTH 'a' /* nCol values */ -#define FTS3_MATCHINFO_LENGTH 'l' /* nCol values */ -#define FTS3_MATCHINFO_LCS 's' /* nCol values */ -#define FTS3_MATCHINFO_HITS 'x' /* 3*nCol*nPhrase values */ - -/* -** The default value for the second argument to matchinfo(). -*/ -#define FTS3_MATCHINFO_DEFAULT "pcx" - - -/* -** Used as an fts3ExprIterate() context when loading phrase doclists to -** Fts3Expr.aDoclist[]/nDoclist. -*/ -typedef struct LoadDoclistCtx LoadDoclistCtx; -struct LoadDoclistCtx { - Fts3Cursor *pCsr; /* FTS3 Cursor */ - int nPhrase; /* Number of phrases seen so far */ - int nToken; /* Number of tokens seen so far */ -}; - -/* -** The following types are used as part of the implementation of the -** fts3BestSnippet() routine. -*/ -typedef struct SnippetIter SnippetIter; -typedef struct SnippetPhrase SnippetPhrase; -typedef struct SnippetFragment SnippetFragment; - -struct SnippetIter { - Fts3Cursor *pCsr; /* Cursor snippet is being generated from */ - int iCol; /* Extract snippet from this column */ - int nSnippet; /* Requested snippet length (in tokens) */ - int nPhrase; /* Number of phrases in query */ - SnippetPhrase *aPhrase; /* Array of size nPhrase */ - int iCurrent; /* First token of current snippet */ -}; - -struct SnippetPhrase { - int nToken; /* Number of tokens in phrase */ - char *pList; /* Pointer to start of phrase position list */ - int iHead; /* Next value in position list */ - char *pHead; /* Position list data following iHead */ - int iTail; /* Next value in trailing position list */ - char *pTail; /* Position list data following iTail */ -}; - -struct SnippetFragment { - int iCol; /* Column snippet is extracted from */ - int iPos; /* Index of first token in snippet */ - u64 covered; /* Mask of query phrases covered */ - u64 hlmask; /* Mask of snippet terms to highlight */ -}; - -/* -** This type is used as an fts3ExprIterate() context object while -** accumulating the data returned by the matchinfo() function. -*/ -typedef struct MatchInfo MatchInfo; -struct MatchInfo { - Fts3Cursor *pCursor; /* FTS3 Cursor */ - int nCol; /* Number of columns in table */ - int nPhrase; /* Number of matchable phrases in query */ - sqlite3_int64 nDoc; /* Number of docs in database */ - u32 *aMatchinfo; /* Pre-allocated buffer */ -}; - - - -/* -** The snippet() and offsets() functions both return text values. An instance -** of the following structure is used to accumulate those values while the -** functions are running. See fts3StringAppend() for details. -*/ -typedef struct StrBuffer StrBuffer; -struct StrBuffer { - char *z; /* Pointer to buffer containing string */ - int n; /* Length of z in bytes (excl. nul-term) */ - int nAlloc; /* Allocated size of buffer z in bytes */ -}; - - -/* -** This function is used to help iterate through a position-list. A position -** list is a list of unique integers, sorted from smallest to largest. Each -** element of the list is represented by an FTS3 varint that takes the value -** of the difference between the current element and the previous one plus -** two. For example, to store the position-list: -** -** 4 9 113 -** -** the three varints: -** -** 6 7 106 -** -** are encoded. -** -** When this function is called, *pp points to the start of an element of -** the list. *piPos contains the value of the previous entry in the list. -** After it returns, *piPos contains the value of the next element of the -** list and *pp is advanced to the following varint. -*/ -static void fts3GetDeltaPosition(char **pp, int *piPos){ - int iVal; - *pp += sqlite3Fts3GetVarint32(*pp, &iVal); - *piPos += (iVal-2); -} - -/* -** Helper function for fts3ExprIterate() (see below). -*/ -static int fts3ExprIterate2( - Fts3Expr *pExpr, /* Expression to iterate phrases of */ - int *piPhrase, /* Pointer to phrase counter */ - int (*x)(Fts3Expr*,int,void*), /* Callback function to invoke for phrases */ - void *pCtx /* Second argument to pass to callback */ -){ - int rc; /* Return code */ - int eType = pExpr->eType; /* Type of expression node pExpr */ - - if( eType!=FTSQUERY_PHRASE ){ - assert( pExpr->pLeft && pExpr->pRight ); - rc = fts3ExprIterate2(pExpr->pLeft, piPhrase, x, pCtx); - if( rc==SQLITE_OK && eType!=FTSQUERY_NOT ){ - rc = fts3ExprIterate2(pExpr->pRight, piPhrase, x, pCtx); - } - }else{ - rc = x(pExpr, *piPhrase, pCtx); - (*piPhrase)++; - } - return rc; -} - -/* -** Iterate through all phrase nodes in an FTS3 query, except those that -** are part of a sub-tree that is the right-hand-side of a NOT operator. -** For each phrase node found, the supplied callback function is invoked. -** -** If the callback function returns anything other than SQLITE_OK, -** the iteration is abandoned and the error code returned immediately. -** Otherwise, SQLITE_OK is returned after a callback has been made for -** all eligible phrase nodes. -*/ -static int fts3ExprIterate( - Fts3Expr *pExpr, /* Expression to iterate phrases of */ - int (*x)(Fts3Expr*,int,void*), /* Callback function to invoke for phrases */ - void *pCtx /* Second argument to pass to callback */ -){ - int iPhrase = 0; /* Variable used as the phrase counter */ - return fts3ExprIterate2(pExpr, &iPhrase, x, pCtx); -} - -/* -** This is an fts3ExprIterate() callback used while loading the doclists -** for each phrase into Fts3Expr.aDoclist[]/nDoclist. See also -** fts3ExprLoadDoclists(). -*/ -static int fts3ExprLoadDoclistsCb(Fts3Expr *pExpr, int iPhrase, void *ctx){ - int rc = SQLITE_OK; - Fts3Phrase *pPhrase = pExpr->pPhrase; - LoadDoclistCtx *p = (LoadDoclistCtx *)ctx; - - UNUSED_PARAMETER(iPhrase); - - p->nPhrase++; - p->nToken += pPhrase->nToken; - - return rc; -} - -/* -** Load the doclists for each phrase in the query associated with FTS3 cursor -** pCsr. -** -** If pnPhrase is not NULL, then *pnPhrase is set to the number of matchable -** phrases in the expression (all phrases except those directly or -** indirectly descended from the right-hand-side of a NOT operator). If -** pnToken is not NULL, then it is set to the number of tokens in all -** matchable phrases of the expression. -*/ -static int fts3ExprLoadDoclists( - Fts3Cursor *pCsr, /* Fts3 cursor for current query */ - int *pnPhrase, /* OUT: Number of phrases in query */ - int *pnToken /* OUT: Number of tokens in query */ -){ - int rc; /* Return Code */ - LoadDoclistCtx sCtx = {0,0,0}; /* Context for fts3ExprIterate() */ - sCtx.pCsr = pCsr; - rc = fts3ExprIterate(pCsr->pExpr, fts3ExprLoadDoclistsCb, (void *)&sCtx); - if( pnPhrase ) *pnPhrase = sCtx.nPhrase; - if( pnToken ) *pnToken = sCtx.nToken; - return rc; -} - -static int fts3ExprPhraseCountCb(Fts3Expr *pExpr, int iPhrase, void *ctx){ - (*(int *)ctx)++; - UNUSED_PARAMETER(pExpr); - UNUSED_PARAMETER(iPhrase); - return SQLITE_OK; -} -static int fts3ExprPhraseCount(Fts3Expr *pExpr){ - int nPhrase = 0; - (void)fts3ExprIterate(pExpr, fts3ExprPhraseCountCb, (void *)&nPhrase); - return nPhrase; -} - -/* -** Advance the position list iterator specified by the first two -** arguments so that it points to the first element with a value greater -** than or equal to parameter iNext. -*/ -static void fts3SnippetAdvance(char **ppIter, int *piIter, int iNext){ - char *pIter = *ppIter; - if( pIter ){ - int iIter = *piIter; - - while( iIteriCurrent<0 ){ - /* The SnippetIter object has just been initialized. The first snippet - ** candidate always starts at offset 0 (even if this candidate has a - ** score of 0.0). - */ - pIter->iCurrent = 0; - - /* Advance the 'head' iterator of each phrase to the first offset that - ** is greater than or equal to (iNext+nSnippet). - */ - for(i=0; inPhrase; i++){ - SnippetPhrase *pPhrase = &pIter->aPhrase[i]; - fts3SnippetAdvance(&pPhrase->pHead, &pPhrase->iHead, pIter->nSnippet); - } - }else{ - int iStart; - int iEnd = 0x7FFFFFFF; - - for(i=0; inPhrase; i++){ - SnippetPhrase *pPhrase = &pIter->aPhrase[i]; - if( pPhrase->pHead && pPhrase->iHeadiHead; - } - } - if( iEnd==0x7FFFFFFF ){ - return 1; - } - - pIter->iCurrent = iStart = iEnd - pIter->nSnippet + 1; - for(i=0; inPhrase; i++){ - SnippetPhrase *pPhrase = &pIter->aPhrase[i]; - fts3SnippetAdvance(&pPhrase->pHead, &pPhrase->iHead, iEnd+1); - fts3SnippetAdvance(&pPhrase->pTail, &pPhrase->iTail, iStart); - } - } - - return 0; -} - -/* -** Retrieve information about the current candidate snippet of snippet -** iterator pIter. -*/ -static void fts3SnippetDetails( - SnippetIter *pIter, /* Snippet iterator */ - u64 mCovered, /* Bitmask of phrases already covered */ - int *piToken, /* OUT: First token of proposed snippet */ - int *piScore, /* OUT: "Score" for this snippet */ - u64 *pmCover, /* OUT: Bitmask of phrases covered */ - u64 *pmHighlight /* OUT: Bitmask of terms to highlight */ -){ - int iStart = pIter->iCurrent; /* First token of snippet */ - int iScore = 0; /* Score of this snippet */ - int i; /* Loop counter */ - u64 mCover = 0; /* Mask of phrases covered by this snippet */ - u64 mHighlight = 0; /* Mask of tokens to highlight in snippet */ - - for(i=0; inPhrase; i++){ - SnippetPhrase *pPhrase = &pIter->aPhrase[i]; - if( pPhrase->pTail ){ - char *pCsr = pPhrase->pTail; - int iCsr = pPhrase->iTail; - - while( iCsr<(iStart+pIter->nSnippet) ){ - int j; - u64 mPhrase = (u64)1 << i; - u64 mPos = (u64)1 << (iCsr - iStart); - assert( iCsr>=iStart ); - if( (mCover|mCovered)&mPhrase ){ - iScore++; - }else{ - iScore += 1000; - } - mCover |= mPhrase; - - for(j=0; jnToken; j++){ - mHighlight |= (mPos>>j); - } - - if( 0==(*pCsr & 0x0FE) ) break; - fts3GetDeltaPosition(&pCsr, &iCsr); - } - } - } - - /* Set the output variables before returning. */ - *piToken = iStart; - *piScore = iScore; - *pmCover = mCover; - *pmHighlight = mHighlight; -} - -/* -** This function is an fts3ExprIterate() callback used by fts3BestSnippet(). -** Each invocation populates an element of the SnippetIter.aPhrase[] array. -*/ -static int fts3SnippetFindPositions(Fts3Expr *pExpr, int iPhrase, void *ctx){ - SnippetIter *p = (SnippetIter *)ctx; - SnippetPhrase *pPhrase = &p->aPhrase[iPhrase]; - char *pCsr; - - pPhrase->nToken = pExpr->pPhrase->nToken; - - pCsr = sqlite3Fts3EvalPhrasePoslist(p->pCsr, pExpr, p->iCol); - if( pCsr ){ - int iFirst = 0; - pPhrase->pList = pCsr; - fts3GetDeltaPosition(&pCsr, &iFirst); - assert( iFirst>=0 ); - pPhrase->pHead = pCsr; - pPhrase->pTail = pCsr; - pPhrase->iHead = iFirst; - pPhrase->iTail = iFirst; - }else{ - assert( pPhrase->pList==0 && pPhrase->pHead==0 && pPhrase->pTail==0 ); - } - - return SQLITE_OK; -} - -/* -** Select the fragment of text consisting of nFragment contiguous tokens -** from column iCol that represent the "best" snippet. The best snippet -** is the snippet with the highest score, where scores are calculated -** by adding: -** -** (a) +1 point for each occurence of a matchable phrase in the snippet. -** -** (b) +1000 points for the first occurence of each matchable phrase in -** the snippet for which the corresponding mCovered bit is not set. -** -** The selected snippet parameters are stored in structure *pFragment before -** returning. The score of the selected snippet is stored in *piScore -** before returning. -*/ -static int fts3BestSnippet( - int nSnippet, /* Desired snippet length */ - Fts3Cursor *pCsr, /* Cursor to create snippet for */ - int iCol, /* Index of column to create snippet from */ - u64 mCovered, /* Mask of phrases already covered */ - u64 *pmSeen, /* IN/OUT: Mask of phrases seen */ - SnippetFragment *pFragment, /* OUT: Best snippet found */ - int *piScore /* OUT: Score of snippet pFragment */ -){ - int rc; /* Return Code */ - int nList; /* Number of phrases in expression */ - SnippetIter sIter; /* Iterates through snippet candidates */ - int nByte; /* Number of bytes of space to allocate */ - int iBestScore = -1; /* Best snippet score found so far */ - int i; /* Loop counter */ - - memset(&sIter, 0, sizeof(sIter)); - - /* Iterate through the phrases in the expression to count them. The same - ** callback makes sure the doclists are loaded for each phrase. - */ - rc = fts3ExprLoadDoclists(pCsr, &nList, 0); - if( rc!=SQLITE_OK ){ - return rc; - } - - /* Now that it is known how many phrases there are, allocate and zero - ** the required space using malloc(). - */ - nByte = sizeof(SnippetPhrase) * nList; - sIter.aPhrase = (SnippetPhrase *)sqlite3_malloc(nByte); - if( !sIter.aPhrase ){ - return SQLITE_NOMEM; - } - memset(sIter.aPhrase, 0, nByte); - - /* Initialize the contents of the SnippetIter object. Then iterate through - ** the set of phrases in the expression to populate the aPhrase[] array. - */ - sIter.pCsr = pCsr; - sIter.iCol = iCol; - sIter.nSnippet = nSnippet; - sIter.nPhrase = nList; - sIter.iCurrent = -1; - (void)fts3ExprIterate(pCsr->pExpr, fts3SnippetFindPositions, (void *)&sIter); - - /* Set the *pmSeen output variable. */ - for(i=0; iiCol = iCol; - while( !fts3SnippetNextCandidate(&sIter) ){ - int iPos; - int iScore; - u64 mCover; - u64 mHighlight; - fts3SnippetDetails(&sIter, mCovered, &iPos, &iScore, &mCover, &mHighlight); - assert( iScore>=0 ); - if( iScore>iBestScore ){ - pFragment->iPos = iPos; - pFragment->hlmask = mHighlight; - pFragment->covered = mCover; - iBestScore = iScore; - } - } - - sqlite3_free(sIter.aPhrase); - *piScore = iBestScore; - return SQLITE_OK; -} - - -/* -** Append a string to the string-buffer passed as the first argument. -** -** If nAppend is negative, then the length of the string zAppend is -** determined using strlen(). -*/ -static int fts3StringAppend( - StrBuffer *pStr, /* Buffer to append to */ - const char *zAppend, /* Pointer to data to append to buffer */ - int nAppend /* Size of zAppend in bytes (or -1) */ -){ - if( nAppend<0 ){ - nAppend = (int)strlen(zAppend); - } - - /* If there is insufficient space allocated at StrBuffer.z, use realloc() - ** to grow the buffer until so that it is big enough to accomadate the - ** appended data. - */ - if( pStr->n+nAppend+1>=pStr->nAlloc ){ - int nAlloc = pStr->nAlloc+nAppend+100; - char *zNew = sqlite3_realloc(pStr->z, nAlloc); - if( !zNew ){ - return SQLITE_NOMEM; - } - pStr->z = zNew; - pStr->nAlloc = nAlloc; - } - - /* Append the data to the string buffer. */ - memcpy(&pStr->z[pStr->n], zAppend, nAppend); - pStr->n += nAppend; - pStr->z[pStr->n] = '\0'; - - return SQLITE_OK; -} - -/* -** The fts3BestSnippet() function often selects snippets that end with a -** query term. That is, the final term of the snippet is always a term -** that requires highlighting. For example, if 'X' is a highlighted term -** and '.' is a non-highlighted term, BestSnippet() may select: -** -** ........X.....X -** -** This function "shifts" the beginning of the snippet forward in the -** document so that there are approximately the same number of -** non-highlighted terms to the right of the final highlighted term as there -** are to the left of the first highlighted term. For example, to this: -** -** ....X.....X.... -** -** This is done as part of extracting the snippet text, not when selecting -** the snippet. Snippet selection is done based on doclists only, so there -** is no way for fts3BestSnippet() to know whether or not the document -** actually contains terms that follow the final highlighted term. -*/ -static int fts3SnippetShift( - Fts3Table *pTab, /* FTS3 table snippet comes from */ - int nSnippet, /* Number of tokens desired for snippet */ - const char *zDoc, /* Document text to extract snippet from */ - int nDoc, /* Size of buffer zDoc in bytes */ - int *piPos, /* IN/OUT: First token of snippet */ - u64 *pHlmask /* IN/OUT: Mask of tokens to highlight */ -){ - u64 hlmask = *pHlmask; /* Local copy of initial highlight-mask */ - - if( hlmask ){ - int nLeft; /* Tokens to the left of first highlight */ - int nRight; /* Tokens to the right of last highlight */ - int nDesired; /* Ideal number of tokens to shift forward */ - - for(nLeft=0; !(hlmask & ((u64)1 << nLeft)); nLeft++); - for(nRight=0; !(hlmask & ((u64)1 << (nSnippet-1-nRight))); nRight++); - nDesired = (nLeft-nRight)/2; - - /* Ideally, the start of the snippet should be pushed forward in the - ** document nDesired tokens. This block checks if there are actually - ** nDesired tokens to the right of the snippet. If so, *piPos and - ** *pHlMask are updated to shift the snippet nDesired tokens to the - ** right. Otherwise, the snippet is shifted by the number of tokens - ** available. - */ - if( nDesired>0 ){ - int nShift; /* Number of tokens to shift snippet by */ - int iCurrent = 0; /* Token counter */ - int rc; /* Return Code */ - sqlite3_tokenizer_module *pMod; - sqlite3_tokenizer_cursor *pC; - pMod = (sqlite3_tokenizer_module *)pTab->pTokenizer->pModule; - - /* Open a cursor on zDoc/nDoc. Check if there are (nSnippet+nDesired) - ** or more tokens in zDoc/nDoc. - */ - rc = pMod->xOpen(pTab->pTokenizer, zDoc, nDoc, &pC); - if( rc!=SQLITE_OK ){ - return rc; - } - pC->pTokenizer = pTab->pTokenizer; - while( rc==SQLITE_OK && iCurrent<(nSnippet+nDesired) ){ - const char *ZDUMMY; int DUMMY1, DUMMY2, DUMMY3; - rc = pMod->xNext(pC, &ZDUMMY, &DUMMY1, &DUMMY2, &DUMMY3, &iCurrent); - } - pMod->xClose(pC); - if( rc!=SQLITE_OK && rc!=SQLITE_DONE ){ return rc; } - - nShift = (rc==SQLITE_DONE)+iCurrent-nSnippet; - assert( nShift<=nDesired ); - if( nShift>0 ){ - *piPos += nShift; - *pHlmask = hlmask >> nShift; - } - } - } - return SQLITE_OK; -} - -/* -** Extract the snippet text for fragment pFragment from cursor pCsr and -** append it to string buffer pOut. -*/ -static int fts3SnippetText( - Fts3Cursor *pCsr, /* FTS3 Cursor */ - SnippetFragment *pFragment, /* Snippet to extract */ - int iFragment, /* Fragment number */ - int isLast, /* True for final fragment in snippet */ - int nSnippet, /* Number of tokens in extracted snippet */ - const char *zOpen, /* String inserted before highlighted term */ - const char *zClose, /* String inserted after highlighted term */ - const char *zEllipsis, /* String inserted between snippets */ - StrBuffer *pOut /* Write output here */ -){ - Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab; - int rc; /* Return code */ - const char *zDoc; /* Document text to extract snippet from */ - int nDoc; /* Size of zDoc in bytes */ - int iCurrent = 0; /* Current token number of document */ - int iEnd = 0; /* Byte offset of end of current token */ - int isShiftDone = 0; /* True after snippet is shifted */ - int iPos = pFragment->iPos; /* First token of snippet */ - u64 hlmask = pFragment->hlmask; /* Highlight-mask for snippet */ - int iCol = pFragment->iCol+1; /* Query column to extract text from */ - sqlite3_tokenizer_module *pMod; /* Tokenizer module methods object */ - sqlite3_tokenizer_cursor *pC; /* Tokenizer cursor open on zDoc/nDoc */ - const char *ZDUMMY; /* Dummy argument used with tokenizer */ - int DUMMY1; /* Dummy argument used with tokenizer */ - - zDoc = (const char *)sqlite3_column_text(pCsr->pStmt, iCol); - if( zDoc==0 ){ - if( sqlite3_column_type(pCsr->pStmt, iCol)!=SQLITE_NULL ){ - return SQLITE_NOMEM; - } - return SQLITE_OK; - } - nDoc = sqlite3_column_bytes(pCsr->pStmt, iCol); - - /* Open a token cursor on the document. */ - pMod = (sqlite3_tokenizer_module *)pTab->pTokenizer->pModule; - rc = pMod->xOpen(pTab->pTokenizer, zDoc, nDoc, &pC); - if( rc!=SQLITE_OK ){ - return rc; - } - pC->pTokenizer = pTab->pTokenizer; - - while( rc==SQLITE_OK ){ - int iBegin; /* Offset in zDoc of start of token */ - int iFin; /* Offset in zDoc of end of token */ - int isHighlight; /* True for highlighted terms */ - - rc = pMod->xNext(pC, &ZDUMMY, &DUMMY1, &iBegin, &iFin, &iCurrent); - if( rc!=SQLITE_OK ){ - if( rc==SQLITE_DONE ){ - /* Special case - the last token of the snippet is also the last token - ** of the column. Append any punctuation that occurred between the end - ** of the previous token and the end of the document to the output. - ** Then break out of the loop. */ - rc = fts3StringAppend(pOut, &zDoc[iEnd], -1); - } - break; - } - if( iCurrent0 || iFragment>0) ){ - rc = fts3StringAppend(pOut, zEllipsis, -1); - } - if( rc!=SQLITE_OK || iCurrent=(iPos+nSnippet) ){ - if( isLast ){ - rc = fts3StringAppend(pOut, zEllipsis, -1); - } - break; - } - - /* Set isHighlight to true if this term should be highlighted. */ - isHighlight = (hlmask & ((u64)1 << (iCurrent-iPos)))!=0; - - if( iCurrent>iPos ) rc = fts3StringAppend(pOut, &zDoc[iEnd], iBegin-iEnd); - if( rc==SQLITE_OK && isHighlight ) rc = fts3StringAppend(pOut, zOpen, -1); - if( rc==SQLITE_OK ) rc = fts3StringAppend(pOut, &zDoc[iBegin], iFin-iBegin); - if( rc==SQLITE_OK && isHighlight ) rc = fts3StringAppend(pOut, zClose, -1); - - iEnd = iFin; - } - - pMod->xClose(pC); - return rc; -} - - -/* -** This function is used to count the entries in a column-list (a -** delta-encoded list of term offsets within a single column of a single -** row). When this function is called, *ppCollist should point to the -** beginning of the first varint in the column-list (the varint that -** contains the position of the first matching term in the column data). -** Before returning, *ppCollist is set to point to the first byte after -** the last varint in the column-list (either the 0x00 signifying the end -** of the position-list, or the 0x01 that precedes the column number of -** the next column in the position-list). -** -** The number of elements in the column-list is returned. -*/ -static int fts3ColumnlistCount(char **ppCollist){ - char *pEnd = *ppCollist; - char c = 0; - int nEntry = 0; - - /* A column-list is terminated by either a 0x01 or 0x00. */ - while( 0xFE & (*pEnd | c) ){ - c = *pEnd++ & 0x80; - if( !c ) nEntry++; - } - - *ppCollist = pEnd; - return nEntry; -} - -/* -** fts3ExprIterate() callback used to collect the "global" matchinfo stats -** for a single query. -** -** fts3ExprIterate() callback to load the 'global' elements of a -** FTS3_MATCHINFO_HITS matchinfo array. The global stats are those elements -** of the matchinfo array that are constant for all rows returned by the -** current query. -** -** Argument pCtx is actually a pointer to a struct of type MatchInfo. This -** function populates Matchinfo.aMatchinfo[] as follows: -** -** for(iCol=0; iColpCursor, pExpr, &p->aMatchinfo[3*iPhrase*p->nCol] - ); -} - -/* -** fts3ExprIterate() callback used to collect the "local" part of the -** FTS3_MATCHINFO_HITS array. The local stats are those elements of the -** array that are different for each row returned by the query. -*/ -static int fts3ExprLocalHitsCb( - Fts3Expr *pExpr, /* Phrase expression node */ - int iPhrase, /* Phrase number */ - void *pCtx /* Pointer to MatchInfo structure */ -){ - MatchInfo *p = (MatchInfo *)pCtx; - int iStart = iPhrase * p->nCol * 3; - int i; - - for(i=0; inCol; i++){ - char *pCsr; - pCsr = sqlite3Fts3EvalPhrasePoslist(p->pCursor, pExpr, i); - if( pCsr ){ - p->aMatchinfo[iStart+i*3] = fts3ColumnlistCount(&pCsr); - }else{ - p->aMatchinfo[iStart+i*3] = 0; - } - } - - return SQLITE_OK; -} - -static int fts3MatchinfoCheck( - Fts3Table *pTab, - char cArg, - char **pzErr -){ - if( (cArg==FTS3_MATCHINFO_NPHRASE) - || (cArg==FTS3_MATCHINFO_NCOL) - || (cArg==FTS3_MATCHINFO_NDOC && pTab->bHasStat) - || (cArg==FTS3_MATCHINFO_AVGLENGTH && pTab->bHasStat) - || (cArg==FTS3_MATCHINFO_LENGTH && pTab->bHasDocsize) - || (cArg==FTS3_MATCHINFO_LCS) - || (cArg==FTS3_MATCHINFO_HITS) - ){ - return SQLITE_OK; - } - *pzErr = sqlite3_mprintf("unrecognized matchinfo request: %c", cArg); - return SQLITE_ERROR; -} - -static int fts3MatchinfoSize(MatchInfo *pInfo, char cArg){ - int nVal; /* Number of integers output by cArg */ - - switch( cArg ){ - case FTS3_MATCHINFO_NDOC: - case FTS3_MATCHINFO_NPHRASE: - case FTS3_MATCHINFO_NCOL: - nVal = 1; - break; - - case FTS3_MATCHINFO_AVGLENGTH: - case FTS3_MATCHINFO_LENGTH: - case FTS3_MATCHINFO_LCS: - nVal = pInfo->nCol; - break; - - default: - assert( cArg==FTS3_MATCHINFO_HITS ); - nVal = pInfo->nCol * pInfo->nPhrase * 3; - break; - } - - return nVal; -} - -static int fts3MatchinfoSelectDoctotal( - Fts3Table *pTab, - sqlite3_stmt **ppStmt, - sqlite3_int64 *pnDoc, - const char **paLen -){ - sqlite3_stmt *pStmt; - const char *a; - sqlite3_int64 nDoc; - - if( !*ppStmt ){ - int rc = sqlite3Fts3SelectDoctotal(pTab, ppStmt); - if( rc!=SQLITE_OK ) return rc; - } - pStmt = *ppStmt; - assert( sqlite3_data_count(pStmt)==1 ); - - a = sqlite3_column_blob(pStmt, 0); - a += sqlite3Fts3GetVarint(a, &nDoc); - if( nDoc==0 ) return FTS_CORRUPT_VTAB; - *pnDoc = (u32)nDoc; - - if( paLen ) *paLen = a; - return SQLITE_OK; -} - -/* -** An instance of the following structure is used to store state while -** iterating through a multi-column position-list corresponding to the -** hits for a single phrase on a single row in order to calculate the -** values for a matchinfo() FTS3_MATCHINFO_LCS request. -*/ -typedef struct LcsIterator LcsIterator; -struct LcsIterator { - Fts3Expr *pExpr; /* Pointer to phrase expression */ - int iPosOffset; /* Tokens count up to end of this phrase */ - char *pRead; /* Cursor used to iterate through aDoclist */ - int iPos; /* Current position */ -}; - -/* -** If LcsIterator.iCol is set to the following value, the iterator has -** finished iterating through all offsets for all columns. -*/ -#define LCS_ITERATOR_FINISHED 0x7FFFFFFF; - -static int fts3MatchinfoLcsCb( - Fts3Expr *pExpr, /* Phrase expression node */ - int iPhrase, /* Phrase number (numbered from zero) */ - void *pCtx /* Pointer to MatchInfo structure */ -){ - LcsIterator *aIter = (LcsIterator *)pCtx; - aIter[iPhrase].pExpr = pExpr; - return SQLITE_OK; -} - -/* -** Advance the iterator passed as an argument to the next position. Return -** 1 if the iterator is at EOF or if it now points to the start of the -** position list for the next column. -*/ -static int fts3LcsIteratorAdvance(LcsIterator *pIter){ - char *pRead = pIter->pRead; - sqlite3_int64 iRead; - int rc = 0; - - pRead += sqlite3Fts3GetVarint(pRead, &iRead); - if( iRead==0 || iRead==1 ){ - pRead = 0; - rc = 1; - }else{ - pIter->iPos += (int)(iRead-2); - } - - pIter->pRead = pRead; - return rc; -} - -/* -** This function implements the FTS3_MATCHINFO_LCS matchinfo() flag. -** -** If the call is successful, the longest-common-substring lengths for each -** column are written into the first nCol elements of the pInfo->aMatchinfo[] -** array before returning. SQLITE_OK is returned in this case. -** -** Otherwise, if an error occurs, an SQLite error code is returned and the -** data written to the first nCol elements of pInfo->aMatchinfo[] is -** undefined. -*/ -static int fts3MatchinfoLcs(Fts3Cursor *pCsr, MatchInfo *pInfo){ - LcsIterator *aIter; - int i; - int iCol; - int nToken = 0; - - /* Allocate and populate the array of LcsIterator objects. The array - ** contains one element for each matchable phrase in the query. - **/ - aIter = sqlite3_malloc(sizeof(LcsIterator) * pCsr->nPhrase); - if( !aIter ) return SQLITE_NOMEM; - memset(aIter, 0, sizeof(LcsIterator) * pCsr->nPhrase); - (void)fts3ExprIterate(pCsr->pExpr, fts3MatchinfoLcsCb, (void*)aIter); - - for(i=0; inPhrase; i++){ - LcsIterator *pIter = &aIter[i]; - nToken -= pIter->pExpr->pPhrase->nToken; - pIter->iPosOffset = nToken; - } - - for(iCol=0; iColnCol; iCol++){ - int nLcs = 0; /* LCS value for this column */ - int nLive = 0; /* Number of iterators in aIter not at EOF */ - - for(i=0; inPhrase; i++){ - LcsIterator *pIt = &aIter[i]; - pIt->pRead = sqlite3Fts3EvalPhrasePoslist(pCsr, pIt->pExpr, iCol); - if( pIt->pRead ){ - pIt->iPos = pIt->iPosOffset; - fts3LcsIteratorAdvance(&aIter[i]); - nLive++; - } - } - - while( nLive>0 ){ - LcsIterator *pAdv = 0; /* The iterator to advance by one position */ - int nThisLcs = 0; /* LCS for the current iterator positions */ - - for(i=0; inPhrase; i++){ - LcsIterator *pIter = &aIter[i]; - if( pIter->pRead==0 ){ - /* This iterator is already at EOF for this column. */ - nThisLcs = 0; - }else{ - if( pAdv==0 || pIter->iPosiPos ){ - pAdv = pIter; - } - if( nThisLcs==0 || pIter->iPos==pIter[-1].iPos ){ - nThisLcs++; - }else{ - nThisLcs = 1; - } - if( nThisLcs>nLcs ) nLcs = nThisLcs; - } - } - if( fts3LcsIteratorAdvance(pAdv) ) nLive--; - } - - pInfo->aMatchinfo[iCol] = nLcs; - } - - sqlite3_free(aIter); - return SQLITE_OK; -} - -/* -** Populate the buffer pInfo->aMatchinfo[] with an array of integers to -** be returned by the matchinfo() function. Argument zArg contains the -** format string passed as the second argument to matchinfo (or the -** default value "pcx" if no second argument was specified). The format -** string has already been validated and the pInfo->aMatchinfo[] array -** is guaranteed to be large enough for the output. -** -** If bGlobal is true, then populate all fields of the matchinfo() output. -** If it is false, then assume that those fields that do not change between -** rows (i.e. FTS3_MATCHINFO_NPHRASE, NCOL, NDOC, AVGLENGTH and part of HITS) -** have already been populated. -** -** Return SQLITE_OK if successful, or an SQLite error code if an error -** occurs. If a value other than SQLITE_OK is returned, the state the -** pInfo->aMatchinfo[] buffer is left in is undefined. -*/ -static int fts3MatchinfoValues( - Fts3Cursor *pCsr, /* FTS3 cursor object */ - int bGlobal, /* True to grab the global stats */ - MatchInfo *pInfo, /* Matchinfo context object */ - const char *zArg /* Matchinfo format string */ -){ - int rc = SQLITE_OK; - int i; - Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab; - sqlite3_stmt *pSelect = 0; - - for(i=0; rc==SQLITE_OK && zArg[i]; i++){ - - switch( zArg[i] ){ - case FTS3_MATCHINFO_NPHRASE: - if( bGlobal ) pInfo->aMatchinfo[0] = pInfo->nPhrase; - break; - - case FTS3_MATCHINFO_NCOL: - if( bGlobal ) pInfo->aMatchinfo[0] = pInfo->nCol; - break; - - case FTS3_MATCHINFO_NDOC: - if( bGlobal ){ - sqlite3_int64 nDoc = 0; - rc = fts3MatchinfoSelectDoctotal(pTab, &pSelect, &nDoc, 0); - pInfo->aMatchinfo[0] = (u32)nDoc; - } - break; - - case FTS3_MATCHINFO_AVGLENGTH: - if( bGlobal ){ - sqlite3_int64 nDoc; /* Number of rows in table */ - const char *a; /* Aggregate column length array */ - - rc = fts3MatchinfoSelectDoctotal(pTab, &pSelect, &nDoc, &a); - if( rc==SQLITE_OK ){ - int iCol; - for(iCol=0; iColnCol; iCol++){ - u32 iVal; - sqlite3_int64 nToken; - a += sqlite3Fts3GetVarint(a, &nToken); - iVal = (u32)(((u32)(nToken&0xffffffff)+nDoc/2)/nDoc); - pInfo->aMatchinfo[iCol] = iVal; - } - } - } - break; - - case FTS3_MATCHINFO_LENGTH: { - sqlite3_stmt *pSelectDocsize = 0; - rc = sqlite3Fts3SelectDocsize(pTab, pCsr->iPrevId, &pSelectDocsize); - if( rc==SQLITE_OK ){ - int iCol; - const char *a = sqlite3_column_blob(pSelectDocsize, 0); - for(iCol=0; iColnCol; iCol++){ - sqlite3_int64 nToken; - a += sqlite3Fts3GetVarint(a, &nToken); - pInfo->aMatchinfo[iCol] = (u32)nToken; - } - } - sqlite3_reset(pSelectDocsize); - break; - } - - case FTS3_MATCHINFO_LCS: - rc = fts3ExprLoadDoclists(pCsr, 0, 0); - if( rc==SQLITE_OK ){ - rc = fts3MatchinfoLcs(pCsr, pInfo); - } - break; - - default: { - Fts3Expr *pExpr; - assert( zArg[i]==FTS3_MATCHINFO_HITS ); - pExpr = pCsr->pExpr; - rc = fts3ExprLoadDoclists(pCsr, 0, 0); - if( rc!=SQLITE_OK ) break; - if( bGlobal ){ - if( pCsr->pDeferred ){ - rc = fts3MatchinfoSelectDoctotal(pTab, &pSelect, &pInfo->nDoc, 0); - if( rc!=SQLITE_OK ) break; - } - rc = fts3ExprIterate(pExpr, fts3ExprGlobalHitsCb,(void*)pInfo); - if( rc!=SQLITE_OK ) break; - } - (void)fts3ExprIterate(pExpr, fts3ExprLocalHitsCb,(void*)pInfo); - break; - } - } - - pInfo->aMatchinfo += fts3MatchinfoSize(pInfo, zArg[i]); - } - - sqlite3_reset(pSelect); - return rc; -} - - -/* -** Populate pCsr->aMatchinfo[] with data for the current row. The -** 'matchinfo' data is an array of 32-bit unsigned integers (C type u32). -*/ -static int fts3GetMatchinfo( - Fts3Cursor *pCsr, /* FTS3 Cursor object */ - const char *zArg /* Second argument to matchinfo() function */ -){ - MatchInfo sInfo; - Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab; - int rc = SQLITE_OK; - int bGlobal = 0; /* Collect 'global' stats as well as local */ - - memset(&sInfo, 0, sizeof(MatchInfo)); - sInfo.pCursor = pCsr; - sInfo.nCol = pTab->nColumn; - - /* If there is cached matchinfo() data, but the format string for the - ** cache does not match the format string for this request, discard - ** the cached data. */ - if( pCsr->zMatchinfo && strcmp(pCsr->zMatchinfo, zArg) ){ - assert( pCsr->aMatchinfo ); - sqlite3_free(pCsr->aMatchinfo); - pCsr->zMatchinfo = 0; - pCsr->aMatchinfo = 0; - } - - /* If Fts3Cursor.aMatchinfo[] is NULL, then this is the first time the - ** matchinfo function has been called for this query. In this case - ** allocate the array used to accumulate the matchinfo data and - ** initialize those elements that are constant for every row. - */ - if( pCsr->aMatchinfo==0 ){ - int nMatchinfo = 0; /* Number of u32 elements in match-info */ - int nArg; /* Bytes in zArg */ - int i; /* Used to iterate through zArg */ - - /* Determine the number of phrases in the query */ - pCsr->nPhrase = fts3ExprPhraseCount(pCsr->pExpr); - sInfo.nPhrase = pCsr->nPhrase; - - /* Determine the number of integers in the buffer returned by this call. */ - for(i=0; zArg[i]; i++){ - nMatchinfo += fts3MatchinfoSize(&sInfo, zArg[i]); - } - - /* Allocate space for Fts3Cursor.aMatchinfo[] and Fts3Cursor.zMatchinfo. */ - nArg = (int)strlen(zArg); - pCsr->aMatchinfo = (u32 *)sqlite3_malloc(sizeof(u32)*nMatchinfo + nArg + 1); - if( !pCsr->aMatchinfo ) return SQLITE_NOMEM; - - pCsr->zMatchinfo = (char *)&pCsr->aMatchinfo[nMatchinfo]; - pCsr->nMatchinfo = nMatchinfo; - memcpy(pCsr->zMatchinfo, zArg, nArg+1); - memset(pCsr->aMatchinfo, 0, sizeof(u32)*nMatchinfo); - pCsr->isMatchinfoNeeded = 1; - bGlobal = 1; - } - - sInfo.aMatchinfo = pCsr->aMatchinfo; - sInfo.nPhrase = pCsr->nPhrase; - if( pCsr->isMatchinfoNeeded ){ - rc = fts3MatchinfoValues(pCsr, bGlobal, &sInfo, zArg); - pCsr->isMatchinfoNeeded = 0; - } - - return rc; -} - -/* -** Implementation of snippet() function. -*/ -void sqlite3Fts3Snippet( - sqlite3_context *pCtx, /* SQLite function call context */ - Fts3Cursor *pCsr, /* Cursor object */ - const char *zStart, /* Snippet start text - "" */ - const char *zEnd, /* Snippet end text - "" */ - const char *zEllipsis, /* Snippet ellipsis text - "..." */ - int iCol, /* Extract snippet from this column */ - int nToken /* Approximate number of tokens in snippet */ -){ - Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab; - int rc = SQLITE_OK; - int i; - StrBuffer res = {0, 0, 0}; - - /* The returned text includes up to four fragments of text extracted from - ** the data in the current row. The first iteration of the for(...) loop - ** below attempts to locate a single fragment of text nToken tokens in - ** size that contains at least one instance of all phrases in the query - ** expression that appear in the current row. If such a fragment of text - ** cannot be found, the second iteration of the loop attempts to locate - ** a pair of fragments, and so on. - */ - int nSnippet = 0; /* Number of fragments in this snippet */ - SnippetFragment aSnippet[4]; /* Maximum of 4 fragments per snippet */ - int nFToken = -1; /* Number of tokens in each fragment */ - - if( !pCsr->pExpr ){ - sqlite3_result_text(pCtx, "", 0, SQLITE_STATIC); - return; - } - - for(nSnippet=1; 1; nSnippet++){ - - int iSnip; /* Loop counter 0..nSnippet-1 */ - u64 mCovered = 0; /* Bitmask of phrases covered by snippet */ - u64 mSeen = 0; /* Bitmask of phrases seen by BestSnippet() */ - - if( nToken>=0 ){ - nFToken = (nToken+nSnippet-1) / nSnippet; - }else{ - nFToken = -1 * nToken; - } - - for(iSnip=0; iSnipnColumn; iRead++){ - SnippetFragment sF = {0, 0, 0, 0}; - int iS; - if( iCol>=0 && iRead!=iCol ) continue; - - /* Find the best snippet of nFToken tokens in column iRead. */ - rc = fts3BestSnippet(nFToken, pCsr, iRead, mCovered, &mSeen, &sF, &iS); - if( rc!=SQLITE_OK ){ - goto snippet_out; - } - if( iS>iBestScore ){ - *pFragment = sF; - iBestScore = iS; - } - } - - mCovered |= pFragment->covered; - } - - /* If all query phrases seen by fts3BestSnippet() are present in at least - ** one of the nSnippet snippet fragments, break out of the loop. - */ - assert( (mCovered&mSeen)==mCovered ); - if( mSeen==mCovered || nSnippet==SizeofArray(aSnippet) ) break; - } - - assert( nFToken>0 ); - - for(i=0; ipCsr, pExpr, p->iCol); - nTerm = pExpr->pPhrase->nToken; - if( pList ){ - fts3GetDeltaPosition(&pList, &iPos); - assert( iPos>=0 ); - } - - for(iTerm=0; iTermaTerm[p->iTerm++]; - pT->iOff = nTerm-iTerm-1; - pT->pList = pList; - pT->iPos = iPos; - } - - return SQLITE_OK; -} - -/* -** Implementation of offsets() function. -*/ -void sqlite3Fts3Offsets( - sqlite3_context *pCtx, /* SQLite function call context */ - Fts3Cursor *pCsr /* Cursor object */ -){ - Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab; - sqlite3_tokenizer_module const *pMod = pTab->pTokenizer->pModule; - const char *ZDUMMY; /* Dummy argument used with xNext() */ - int NDUMMY; /* Dummy argument used with xNext() */ - int rc; /* Return Code */ - int nToken; /* Number of tokens in query */ - int iCol; /* Column currently being processed */ - StrBuffer res = {0, 0, 0}; /* Result string */ - TermOffsetCtx sCtx; /* Context for fts3ExprTermOffsetInit() */ - - if( !pCsr->pExpr ){ - sqlite3_result_text(pCtx, "", 0, SQLITE_STATIC); - return; - } - - memset(&sCtx, 0, sizeof(sCtx)); - assert( pCsr->isRequireSeek==0 ); - - /* Count the number of terms in the query */ - rc = fts3ExprLoadDoclists(pCsr, 0, &nToken); - if( rc!=SQLITE_OK ) goto offsets_out; - - /* Allocate the array of TermOffset iterators. */ - sCtx.aTerm = (TermOffset *)sqlite3_malloc(sizeof(TermOffset)*nToken); - if( 0==sCtx.aTerm ){ - rc = SQLITE_NOMEM; - goto offsets_out; - } - sCtx.iDocid = pCsr->iPrevId; - sCtx.pCsr = pCsr; - - /* Loop through the table columns, appending offset information to - ** string-buffer res for each column. - */ - for(iCol=0; iColnColumn; iCol++){ - sqlite3_tokenizer_cursor *pC; /* Tokenizer cursor */ - int iStart; - int iEnd; - int iCurrent; - const char *zDoc; - int nDoc; - - /* Initialize the contents of sCtx.aTerm[] for column iCol. There is - ** no way that this operation can fail, so the return code from - ** fts3ExprIterate() can be discarded. - */ - sCtx.iCol = iCol; - sCtx.iTerm = 0; - (void)fts3ExprIterate(pCsr->pExpr, fts3ExprTermOffsetInit, (void *)&sCtx); - - /* Retreive the text stored in column iCol. If an SQL NULL is stored - ** in column iCol, jump immediately to the next iteration of the loop. - ** If an OOM occurs while retrieving the data (this can happen if SQLite - ** needs to transform the data from utf-16 to utf-8), return SQLITE_NOMEM - ** to the caller. - */ - zDoc = (const char *)sqlite3_column_text(pCsr->pStmt, iCol+1); - nDoc = sqlite3_column_bytes(pCsr->pStmt, iCol+1); - if( zDoc==0 ){ - if( sqlite3_column_type(pCsr->pStmt, iCol+1)==SQLITE_NULL ){ - continue; - } - rc = SQLITE_NOMEM; - goto offsets_out; - } - - /* Initialize a tokenizer iterator to iterate through column iCol. */ - rc = pMod->xOpen(pTab->pTokenizer, zDoc, nDoc, &pC); - if( rc!=SQLITE_OK ) goto offsets_out; - pC->pTokenizer = pTab->pTokenizer; - - rc = pMod->xNext(pC, &ZDUMMY, &NDUMMY, &iStart, &iEnd, &iCurrent); - while( rc==SQLITE_OK ){ - int i; /* Used to loop through terms */ - int iMinPos = 0x7FFFFFFF; /* Position of next token */ - TermOffset *pTerm = 0; /* TermOffset associated with next token */ - - for(i=0; ipList && (pT->iPos-pT->iOff)iPos-pT->iOff; - pTerm = pT; - } - } - - if( !pTerm ){ - /* All offsets for this column have been gathered. */ - rc = SQLITE_DONE; - }else{ - assert( iCurrent<=iMinPos ); - if( 0==(0xFE&*pTerm->pList) ){ - pTerm->pList = 0; - }else{ - fts3GetDeltaPosition(&pTerm->pList, &pTerm->iPos); - } - while( rc==SQLITE_OK && iCurrentxNext(pC, &ZDUMMY, &NDUMMY, &iStart, &iEnd, &iCurrent); - } - if( rc==SQLITE_OK ){ - char aBuffer[64]; - sqlite3_snprintf(sizeof(aBuffer), aBuffer, - "%d %d %d %d ", iCol, pTerm-sCtx.aTerm, iStart, iEnd-iStart - ); - rc = fts3StringAppend(&res, aBuffer, -1); - }else if( rc==SQLITE_DONE && pTab->zContentTbl==0 ){ - rc = FTS_CORRUPT_VTAB; - } - } - } - if( rc==SQLITE_DONE ){ - rc = SQLITE_OK; - } - - pMod->xClose(pC); - if( rc!=SQLITE_OK ) goto offsets_out; - } - - offsets_out: - sqlite3_free(sCtx.aTerm); - assert( rc!=SQLITE_DONE ); - sqlite3Fts3SegmentsClose(pTab); - if( rc!=SQLITE_OK ){ - sqlite3_result_error_code(pCtx, rc); - sqlite3_free(res.z); - }else{ - sqlite3_result_text(pCtx, res.z, res.n-1, sqlite3_free); - } - return; -} - -/* -** Implementation of matchinfo() function. -*/ -void sqlite3Fts3Matchinfo( - sqlite3_context *pContext, /* Function call context */ - Fts3Cursor *pCsr, /* FTS3 table cursor */ - const char *zArg /* Second arg to matchinfo() function */ -){ - Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab; - int rc; - int i; - const char *zFormat; - - if( zArg ){ - for(i=0; zArg[i]; i++){ - char *zErr = 0; - if( fts3MatchinfoCheck(pTab, zArg[i], &zErr) ){ - sqlite3_result_error(pContext, zErr, -1); - sqlite3_free(zErr); - return; - } - } - zFormat = zArg; - }else{ - zFormat = FTS3_MATCHINFO_DEFAULT; - } - - if( !pCsr->pExpr ){ - sqlite3_result_blob(pContext, "", 0, SQLITE_STATIC); - return; - } - - /* Retrieve matchinfo() data. */ - rc = fts3GetMatchinfo(pCsr, zFormat); - sqlite3Fts3SegmentsClose(pTab); - - if( rc!=SQLITE_OK ){ - sqlite3_result_error_code(pContext, rc); - }else{ - int n = pCsr->nMatchinfo * sizeof(u32); - sqlite3_result_blob(pContext, pCsr->aMatchinfo, n, SQLITE_TRANSIENT); - } -} - -#endif diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_term.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_term.c deleted file mode 100644 index f296fb3c3e..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_term.c +++ /dev/null @@ -1,369 +0,0 @@ -/* -** 2011 Jan 27 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This file is not part of the production FTS code. It is only used for -** testing. It contains a virtual table implementation that provides direct -** access to the full-text index of an FTS table. -*/ - -#include "fts3Int.h" -#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) -#ifdef SQLITE_TEST - -#include -#include -#include - -typedef struct Fts3termTable Fts3termTable; -typedef struct Fts3termCursor Fts3termCursor; - -struct Fts3termTable { - sqlite3_vtab base; /* Base class used by SQLite core */ - int iIndex; /* Index for Fts3Table.aIndex[] */ - Fts3Table *pFts3Tab; -}; - -struct Fts3termCursor { - sqlite3_vtab_cursor base; /* Base class used by SQLite core */ - Fts3MultiSegReader csr; /* Must be right after "base" */ - Fts3SegFilter filter; - - int isEof; /* True if cursor is at EOF */ - char *pNext; - - sqlite3_int64 iRowid; /* Current 'rowid' value */ - sqlite3_int64 iDocid; /* Current 'docid' value */ - int iCol; /* Current 'col' value */ - int iPos; /* Current 'pos' value */ -}; - -/* -** Schema of the terms table. -*/ -#define FTS3_TERMS_SCHEMA "CREATE TABLE x(term, docid, col, pos)" - -/* -** This function does all the work for both the xConnect and xCreate methods. -** These tables have no persistent representation of their own, so xConnect -** and xCreate are identical operations. -*/ -static int fts3termConnectMethod( - sqlite3 *db, /* Database connection */ - void *pCtx, /* Non-zero for an fts4prefix table */ - int argc, /* Number of elements in argv array */ - const char * const *argv, /* xCreate/xConnect argument array */ - sqlite3_vtab **ppVtab, /* OUT: New sqlite3_vtab object */ - char **pzErr /* OUT: sqlite3_malloc'd error message */ -){ - char const *zDb; /* Name of database (e.g. "main") */ - char const *zFts3; /* Name of fts3 table */ - int nDb; /* Result of strlen(zDb) */ - int nFts3; /* Result of strlen(zFts3) */ - int nByte; /* Bytes of space to allocate here */ - int rc; /* value returned by declare_vtab() */ - Fts3termTable *p; /* Virtual table object to return */ - int iIndex = 0; - - if( argc==5 ){ - iIndex = atoi(argv[4]); - argc--; - } - - /* The user should specify a single argument - the name of an fts3 table. */ - if( argc!=4 ){ - *pzErr = sqlite3_mprintf( - "wrong number of arguments to fts4term constructor" - ); - return SQLITE_ERROR; - } - - zDb = argv[1]; - nDb = strlen(zDb); - zFts3 = argv[3]; - nFts3 = strlen(zFts3); - - rc = sqlite3_declare_vtab(db, FTS3_TERMS_SCHEMA); - if( rc!=SQLITE_OK ) return rc; - - nByte = sizeof(Fts3termTable) + sizeof(Fts3Table) + nDb + nFts3 + 2; - p = (Fts3termTable *)sqlite3_malloc(nByte); - if( !p ) return SQLITE_NOMEM; - memset(p, 0, nByte); - - p->pFts3Tab = (Fts3Table *)&p[1]; - p->pFts3Tab->zDb = (char *)&p->pFts3Tab[1]; - p->pFts3Tab->zName = &p->pFts3Tab->zDb[nDb+1]; - p->pFts3Tab->db = db; - p->pFts3Tab->nIndex = iIndex+1; - p->iIndex = iIndex; - - memcpy((char *)p->pFts3Tab->zDb, zDb, nDb); - memcpy((char *)p->pFts3Tab->zName, zFts3, nFts3); - sqlite3Fts3Dequote((char *)p->pFts3Tab->zName); - - *ppVtab = (sqlite3_vtab *)p; - return SQLITE_OK; -} - -/* -** This function does the work for both the xDisconnect and xDestroy methods. -** These tables have no persistent representation of their own, so xDisconnect -** and xDestroy are identical operations. -*/ -static int fts3termDisconnectMethod(sqlite3_vtab *pVtab){ - Fts3termTable *p = (Fts3termTable *)pVtab; - Fts3Table *pFts3 = p->pFts3Tab; - int i; - - /* Free any prepared statements held */ - for(i=0; iaStmt); i++){ - sqlite3_finalize(pFts3->aStmt[i]); - } - sqlite3_free(pFts3->zSegmentsTbl); - sqlite3_free(p); - return SQLITE_OK; -} - -#define FTS4AUX_EQ_CONSTRAINT 1 -#define FTS4AUX_GE_CONSTRAINT 2 -#define FTS4AUX_LE_CONSTRAINT 4 - -/* -** xBestIndex - Analyze a WHERE and ORDER BY clause. -*/ -static int fts3termBestIndexMethod( - sqlite3_vtab *pVTab, - sqlite3_index_info *pInfo -){ - UNUSED_PARAMETER(pVTab); - - /* This vtab naturally does "ORDER BY term, docid, col, pos". */ - if( pInfo->nOrderBy ){ - int i; - for(i=0; inOrderBy; i++){ - if( pInfo->aOrderBy[i].iColumn!=i || pInfo->aOrderBy[i].desc ) break; - } - if( i==pInfo->nOrderBy ){ - pInfo->orderByConsumed = 1; - } - } - - return SQLITE_OK; -} - -/* -** xOpen - Open a cursor. -*/ -static int fts3termOpenMethod(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCsr){ - Fts3termCursor *pCsr; /* Pointer to cursor object to return */ - - UNUSED_PARAMETER(pVTab); - - pCsr = (Fts3termCursor *)sqlite3_malloc(sizeof(Fts3termCursor)); - if( !pCsr ) return SQLITE_NOMEM; - memset(pCsr, 0, sizeof(Fts3termCursor)); - - *ppCsr = (sqlite3_vtab_cursor *)pCsr; - return SQLITE_OK; -} - -/* -** xClose - Close a cursor. -*/ -static int fts3termCloseMethod(sqlite3_vtab_cursor *pCursor){ - Fts3Table *pFts3 = ((Fts3termTable *)pCursor->pVtab)->pFts3Tab; - Fts3termCursor *pCsr = (Fts3termCursor *)pCursor; - - sqlite3Fts3SegmentsClose(pFts3); - sqlite3Fts3SegReaderFinish(&pCsr->csr); - sqlite3_free(pCsr); - return SQLITE_OK; -} - -/* -** xNext - Advance the cursor to the next row, if any. -*/ -static int fts3termNextMethod(sqlite3_vtab_cursor *pCursor){ - Fts3termCursor *pCsr = (Fts3termCursor *)pCursor; - Fts3Table *pFts3 = ((Fts3termTable *)pCursor->pVtab)->pFts3Tab; - int rc; - sqlite3_int64 v; - - /* Increment our pretend rowid value. */ - pCsr->iRowid++; - - /* Advance to the next term in the full-text index. */ - if( pCsr->csr.aDoclist==0 - || pCsr->pNext>=&pCsr->csr.aDoclist[pCsr->csr.nDoclist-1] - ){ - rc = sqlite3Fts3SegReaderStep(pFts3, &pCsr->csr); - if( rc!=SQLITE_ROW ){ - pCsr->isEof = 1; - return rc; - } - - pCsr->iCol = 0; - pCsr->iPos = 0; - pCsr->iDocid = 0; - pCsr->pNext = pCsr->csr.aDoclist; - - /* Read docid */ - pCsr->pNext += sqlite3Fts3GetVarint(pCsr->pNext, &pCsr->iDocid); - } - - pCsr->pNext += sqlite3Fts3GetVarint(pCsr->pNext, &v); - if( v==0 ){ - pCsr->pNext += sqlite3Fts3GetVarint(pCsr->pNext, &v); - pCsr->iDocid += v; - pCsr->pNext += sqlite3Fts3GetVarint(pCsr->pNext, &v); - pCsr->iCol = 0; - pCsr->iPos = 0; - } - - if( v==1 ){ - pCsr->pNext += sqlite3Fts3GetVarint(pCsr->pNext, &v); - pCsr->iCol += v; - pCsr->iPos = 0; - pCsr->pNext += sqlite3Fts3GetVarint(pCsr->pNext, &v); - } - - pCsr->iPos += (v - 2); - - return SQLITE_OK; -} - -/* -** xFilter - Initialize a cursor to point at the start of its data. -*/ -static int fts3termFilterMethod( - sqlite3_vtab_cursor *pCursor, /* The cursor used for this query */ - int idxNum, /* Strategy index */ - const char *idxStr, /* Unused */ - int nVal, /* Number of elements in apVal */ - sqlite3_value **apVal /* Arguments for the indexing scheme */ -){ - Fts3termCursor *pCsr = (Fts3termCursor *)pCursor; - Fts3termTable *p = (Fts3termTable *)pCursor->pVtab; - Fts3Table *pFts3 = p->pFts3Tab; - int rc; - - UNUSED_PARAMETER(nVal); - UNUSED_PARAMETER(idxNum); - UNUSED_PARAMETER(idxStr); - UNUSED_PARAMETER(apVal); - - assert( idxStr==0 && idxNum==0 ); - - /* In case this cursor is being reused, close and zero it. */ - testcase(pCsr->filter.zTerm); - sqlite3Fts3SegReaderFinish(&pCsr->csr); - memset(&pCsr->csr, 0, ((u8*)&pCsr[1]) - (u8*)&pCsr->csr); - - pCsr->filter.flags = FTS3_SEGMENT_REQUIRE_POS|FTS3_SEGMENT_IGNORE_EMPTY; - pCsr->filter.flags |= FTS3_SEGMENT_SCAN; - - rc = sqlite3Fts3SegReaderCursor(pFts3, p->iIndex, FTS3_SEGCURSOR_ALL, - pCsr->filter.zTerm, pCsr->filter.nTerm, 0, 1, &pCsr->csr - ); - if( rc==SQLITE_OK ){ - rc = sqlite3Fts3SegReaderStart(pFts3, &pCsr->csr, &pCsr->filter); - } - if( rc==SQLITE_OK ){ - rc = fts3termNextMethod(pCursor); - } - return rc; -} - -/* -** xEof - Return true if the cursor is at EOF, or false otherwise. -*/ -static int fts3termEofMethod(sqlite3_vtab_cursor *pCursor){ - Fts3termCursor *pCsr = (Fts3termCursor *)pCursor; - return pCsr->isEof; -} - -/* -** xColumn - Return a column value. -*/ -static int fts3termColumnMethod( - sqlite3_vtab_cursor *pCursor, /* Cursor to retrieve value from */ - sqlite3_context *pCtx, /* Context for sqlite3_result_xxx() calls */ - int iCol /* Index of column to read value from */ -){ - Fts3termCursor *p = (Fts3termCursor *)pCursor; - - assert( iCol>=0 && iCol<=3 ); - switch( iCol ){ - case 0: - sqlite3_result_text(pCtx, p->csr.zTerm, p->csr.nTerm, SQLITE_TRANSIENT); - break; - case 1: - sqlite3_result_int64(pCtx, p->iDocid); - break; - case 2: - sqlite3_result_int64(pCtx, p->iCol); - break; - default: - sqlite3_result_int64(pCtx, p->iPos); - break; - } - - return SQLITE_OK; -} - -/* -** xRowid - Return the current rowid for the cursor. -*/ -static int fts3termRowidMethod( - sqlite3_vtab_cursor *pCursor, /* Cursor to retrieve value from */ - sqlite_int64 *pRowid /* OUT: Rowid value */ -){ - Fts3termCursor *pCsr = (Fts3termCursor *)pCursor; - *pRowid = pCsr->iRowid; - return SQLITE_OK; -} - -/* -** Register the fts3term module with database connection db. Return SQLITE_OK -** if successful or an error code if sqlite3_create_module() fails. -*/ -int sqlite3Fts3InitTerm(sqlite3 *db){ - static const sqlite3_module fts3term_module = { - 0, /* iVersion */ - fts3termConnectMethod, /* xCreate */ - fts3termConnectMethod, /* xConnect */ - fts3termBestIndexMethod, /* xBestIndex */ - fts3termDisconnectMethod, /* xDisconnect */ - fts3termDisconnectMethod, /* xDestroy */ - fts3termOpenMethod, /* xOpen */ - fts3termCloseMethod, /* xClose */ - fts3termFilterMethod, /* xFilter */ - fts3termNextMethod, /* xNext */ - fts3termEofMethod, /* xEof */ - fts3termColumnMethod, /* xColumn */ - fts3termRowidMethod, /* xRowid */ - 0, /* xUpdate */ - 0, /* xBegin */ - 0, /* xSync */ - 0, /* xCommit */ - 0, /* xRollback */ - 0, /* xFindFunction */ - 0 /* xRename */ - }; - int rc; /* Return code */ - - rc = sqlite3_create_module(db, "fts4term", &fts3term_module, 0); - return rc; -} - -#endif -#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_test.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_test.c deleted file mode 100644 index 33c41a8745..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_test.c +++ /dev/null @@ -1,324 +0,0 @@ -/* -** 2011 Jun 13 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This file is not part of the production FTS code. It is only used for -** testing. It contains a Tcl command that can be used to test if a document -** matches an FTS NEAR expression. -*/ - -#include -#include -#include - -#ifdef SQLITE_TEST - -/* Required so that the "ifdef SQLITE_ENABLE_FTS3" below works */ -#include "fts3Int.h" - -#define NM_MAX_TOKEN 12 - -typedef struct NearPhrase NearPhrase; -typedef struct NearDocument NearDocument; -typedef struct NearToken NearToken; - -struct NearDocument { - int nToken; /* Length of token in bytes */ - NearToken *aToken; /* Token array */ -}; - -struct NearToken { - int n; /* Length of token in bytes */ - const char *z; /* Pointer to token string */ -}; - -struct NearPhrase { - int nNear; /* Preceding NEAR value */ - int nToken; /* Number of tokens in this phrase */ - NearToken aToken[NM_MAX_TOKEN]; /* Array of tokens in this phrase */ -}; - -static int nm_phrase_match( - NearPhrase *p, - NearToken *aToken -){ - int ii; - - for(ii=0; iinToken; ii++){ - NearToken *pToken = &p->aToken[ii]; - if( pToken->n>0 && pToken->z[pToken->n-1]=='*' ){ - if( aToken[ii].n<(pToken->n-1) ) return 0; - if( memcmp(aToken[ii].z, pToken->z, pToken->n-1) ) return 0; - }else{ - if( aToken[ii].n!=pToken->n ) return 0; - if( memcmp(aToken[ii].z, pToken->z, pToken->n) ) return 0; - } - } - - return 1; -} - -static int nm_near_chain( - int iDir, /* Direction to iterate through aPhrase[] */ - NearDocument *pDoc, /* Document to match against */ - int iPos, /* Position at which iPhrase was found */ - int nPhrase, /* Size of phrase array */ - NearPhrase *aPhrase, /* Phrase array */ - int iPhrase /* Index of phrase found */ -){ - int iStart; - int iStop; - int ii; - int nNear; - int iPhrase2; - NearPhrase *p; - NearPhrase *pPrev; - - assert( iDir==1 || iDir==-1 ); - - if( iDir==1 ){ - if( (iPhrase+1)==nPhrase ) return 1; - nNear = aPhrase[iPhrase+1].nNear; - }else{ - if( iPhrase==0 ) return 1; - nNear = aPhrase[iPhrase].nNear; - } - pPrev = &aPhrase[iPhrase]; - iPhrase2 = iPhrase+iDir; - p = &aPhrase[iPhrase2]; - - iStart = iPos - nNear - p->nToken; - iStop = iPos + nNear + pPrev->nToken; - - if( iStart<0 ) iStart = 0; - if( iStop > pDoc->nToken - p->nToken ) iStop = pDoc->nToken - p->nToken; - - for(ii=iStart; ii<=iStop; ii++){ - if( nm_phrase_match(p, &pDoc->aToken[ii]) ){ - if( nm_near_chain(iDir, pDoc, ii, nPhrase, aPhrase, iPhrase2) ) return 1; - } - } - - return 0; -} - -static int nm_match_count( - NearDocument *pDoc, /* Document to match against */ - int nPhrase, /* Size of phrase array */ - NearPhrase *aPhrase, /* Phrase array */ - int iPhrase /* Index of phrase to count matches for */ -){ - int nOcc = 0; - int ii; - NearPhrase *p = &aPhrase[iPhrase]; - - for(ii=0; ii<(pDoc->nToken + 1 - p->nToken); ii++){ - if( nm_phrase_match(p, &pDoc->aToken[ii]) ){ - /* Test forward NEAR chain (i>iPhrase) */ - if( 0==nm_near_chain(1, pDoc, ii, nPhrase, aPhrase, iPhrase) ) continue; - - /* Test reverse NEAR chain (iNM_MAX_TOKEN ){ - Tcl_AppendResult(interp, "Too many tokens in phrase", 0); - rc = TCL_ERROR; - goto near_match_out; - } - for(jj=0; jjz = Tcl_GetStringFromObj(apToken[jj], &pT->n); - } - aPhrase[ii].nToken = nToken; - } - for(ii=1; ii0)); - - near_match_out: - ckfree((char *)aPhrase); - ckfree((char *)doc.aToken); - return rc; -} - -/* -** Tclcmd: fts3_configure_incr_load ?CHUNKSIZE THRESHOLD? -** -** Normally, FTS uses hard-coded values to determine the minimum doclist -** size eligible for incremental loading, and the size of the chunks loaded -** when a doclist is incrementally loaded. This command allows the built-in -** values to be overridden for testing purposes. -** -** If present, the first argument is the chunksize in bytes to load doclists -** in. The second argument is the minimum doclist size in bytes to use -** incremental loading with. -** -** Whether or not the arguments are present, this command returns a list of -** two integers - the initial chunksize and threshold when the command is -** invoked. This can be used to restore the default behaviour after running -** tests. For example: -** -** # Override incr-load settings for testing: -** set cfg [fts3_configure_incr_load $new_chunksize $new_threshold] -** -** .... run tests .... -** -** # Restore initial incr-load settings: -** eval fts3_configure_incr_load $cfg -*/ -static int fts3_configure_incr_load_cmd( - ClientData clientData, - Tcl_Interp *interp, - int objc, - Tcl_Obj *CONST objv[] -){ -#ifdef SQLITE_ENABLE_FTS3 - extern int test_fts3_node_chunksize; - extern int test_fts3_node_chunk_threshold; - Tcl_Obj *pRet; - - if( objc!=1 && objc!=3 ){ - Tcl_WrongNumArgs(interp, 1, objv, "?CHUNKSIZE THRESHOLD?"); - return TCL_ERROR; - } - - pRet = Tcl_NewObj(); - Tcl_IncrRefCount(pRet); - Tcl_ListObjAppendElement( - interp, pRet, Tcl_NewIntObj(test_fts3_node_chunksize)); - Tcl_ListObjAppendElement( - interp, pRet, Tcl_NewIntObj(test_fts3_node_chunk_threshold)); - - if( objc==3 ){ - int iArg1; - int iArg2; - if( Tcl_GetIntFromObj(interp, objv[1], &iArg1) - || Tcl_GetIntFromObj(interp, objv[2], &iArg2) - ){ - Tcl_DecrRefCount(pRet); - return TCL_ERROR; - } - test_fts3_node_chunksize = iArg1; - test_fts3_node_chunk_threshold = iArg2; - } - - Tcl_SetObjResult(interp, pRet); - Tcl_DecrRefCount(pRet); -#endif - return TCL_OK; -} - -int Sqlitetestfts3_Init(Tcl_Interp *interp){ - Tcl_CreateObjCommand(interp, "fts3_near_match", fts3_near_match_cmd, 0, 0); - Tcl_CreateObjCommand(interp, - "fts3_configure_incr_load", fts3_configure_incr_load_cmd, 0, 0 - ); - return TCL_OK; -} -#endif /* ifdef SQLITE_TEST */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_tokenizer.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_tokenizer.c deleted file mode 100644 index 408e7e0b3e..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_tokenizer.c +++ /dev/null @@ -1,489 +0,0 @@ -/* -** 2007 June 22 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This is part of an SQLite module implementing full-text search. -** This particular file implements the generic tokenizer interface. -*/ - -/* -** The code in this file is only compiled if: -** -** * The FTS3 module is being built as an extension -** (in which case SQLITE_CORE is not defined), or -** -** * The FTS3 module is being built into the core of -** SQLite (in which case SQLITE_ENABLE_FTS3 is defined). -*/ -#include "fts3Int.h" -#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) - -#include -#include - -/* -** Implementation of the SQL scalar function for accessing the underlying -** hash table. This function may be called as follows: -** -** SELECT (); -** SELECT (, ); -** -** where is the name passed as the second argument -** to the sqlite3Fts3InitHashTable() function (e.g. 'fts3_tokenizer'). -** -** If the argument is specified, it must be a blob value -** containing a pointer to be stored as the hash data corresponding -** to the string . If is not specified, then -** the string must already exist in the has table. Otherwise, -** an error is returned. -** -** Whether or not the argument is specified, the value returned -** is a blob containing the pointer stored as the hash data corresponding -** to string (after the hash-table is updated, if applicable). -*/ -static void scalarFunc( - sqlite3_context *context, - int argc, - sqlite3_value **argv -){ - Fts3Hash *pHash; - void *pPtr = 0; - const unsigned char *zName; - int nName; - - assert( argc==1 || argc==2 ); - - pHash = (Fts3Hash *)sqlite3_user_data(context); - - zName = sqlite3_value_text(argv[0]); - nName = sqlite3_value_bytes(argv[0])+1; - - if( argc==2 ){ - void *pOld; - int n = sqlite3_value_bytes(argv[1]); - if( n!=sizeof(pPtr) ){ - sqlite3_result_error(context, "argument type mismatch", -1); - return; - } - pPtr = *(void **)sqlite3_value_blob(argv[1]); - pOld = sqlite3Fts3HashInsert(pHash, (void *)zName, nName, pPtr); - if( pOld==pPtr ){ - sqlite3_result_error(context, "out of memory", -1); - return; - } - }else{ - pPtr = sqlite3Fts3HashFind(pHash, zName, nName); - if( !pPtr ){ - char *zErr = sqlite3_mprintf("unknown tokenizer: %s", zName); - sqlite3_result_error(context, zErr, -1); - sqlite3_free(zErr); - return; - } - } - - sqlite3_result_blob(context, (void *)&pPtr, sizeof(pPtr), SQLITE_TRANSIENT); -} - -int sqlite3Fts3IsIdChar(char c){ - static const char isFtsIdChar[] = { - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 1x */ - 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 2x */ - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, /* 3x */ - 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 4x */ - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, /* 5x */ - 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 6x */ - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, /* 7x */ - }; - return (c&0x80 || isFtsIdChar[(int)(c)]); -} - -const char *sqlite3Fts3NextToken(const char *zStr, int *pn){ - const char *z1; - const char *z2 = 0; - - /* Find the start of the next token. */ - z1 = zStr; - while( z2==0 ){ - char c = *z1; - switch( c ){ - case '\0': return 0; /* No more tokens here */ - case '\'': - case '"': - case '`': { - z2 = z1; - while( *++z2 && (*z2!=c || *++z2==c) ); - break; - } - case '[': - z2 = &z1[1]; - while( *z2 && z2[0]!=']' ) z2++; - if( *z2 ) z2++; - break; - - default: - if( sqlite3Fts3IsIdChar(*z1) ){ - z2 = &z1[1]; - while( sqlite3Fts3IsIdChar(*z2) ) z2++; - }else{ - z1++; - } - } - } - - *pn = (int)(z2-z1); - return z1; -} - -int sqlite3Fts3InitTokenizer( - Fts3Hash *pHash, /* Tokenizer hash table */ - const char *zArg, /* Tokenizer name */ - sqlite3_tokenizer **ppTok, /* OUT: Tokenizer (if applicable) */ - char **pzErr /* OUT: Set to malloced error message */ -){ - int rc; - char *z = (char *)zArg; - int n = 0; - char *zCopy; - char *zEnd; /* Pointer to nul-term of zCopy */ - sqlite3_tokenizer_module *m; - - zCopy = sqlite3_mprintf("%s", zArg); - if( !zCopy ) return SQLITE_NOMEM; - zEnd = &zCopy[strlen(zCopy)]; - - z = (char *)sqlite3Fts3NextToken(zCopy, &n); - z[n] = '\0'; - sqlite3Fts3Dequote(z); - - m = (sqlite3_tokenizer_module *)sqlite3Fts3HashFind(pHash,z,(int)strlen(z)+1); - if( !m ){ - *pzErr = sqlite3_mprintf("unknown tokenizer: %s", z); - rc = SQLITE_ERROR; - }else{ - char const **aArg = 0; - int iArg = 0; - z = &z[n+1]; - while( zxCreate(iArg, aArg, ppTok); - assert( rc!=SQLITE_OK || *ppTok ); - if( rc!=SQLITE_OK ){ - *pzErr = sqlite3_mprintf("unknown tokenizer"); - }else{ - (*ppTok)->pModule = m; - } - sqlite3_free((void *)aArg); - } - - sqlite3_free(zCopy); - return rc; -} - - -#ifdef SQLITE_TEST - -#include -#include - -/* -** Implementation of a special SQL scalar function for testing tokenizers -** designed to be used in concert with the Tcl testing framework. This -** function must be called with two arguments: -** -** SELECT (, ); -** SELECT (, ); -** -** where is the name passed as the second argument -** to the sqlite3Fts3InitHashTable() function (e.g. 'fts3_tokenizer') -** concatenated with the string '_test' (e.g. 'fts3_tokenizer_test'). -** -** The return value is a string that may be interpreted as a Tcl -** list. For each token in the , three elements are -** added to the returned list. The first is the token position, the -** second is the token text (folded, stemmed, etc.) and the third is the -** substring of associated with the token. For example, -** using the built-in "simple" tokenizer: -** -** SELECT fts_tokenizer_test('simple', 'I don't see how'); -** -** will return the string: -** -** "{0 i I 1 dont don't 2 see see 3 how how}" -** -*/ -static void testFunc( - sqlite3_context *context, - int argc, - sqlite3_value **argv -){ - Fts3Hash *pHash; - sqlite3_tokenizer_module *p; - sqlite3_tokenizer *pTokenizer = 0; - sqlite3_tokenizer_cursor *pCsr = 0; - - const char *zErr = 0; - - const char *zName; - int nName; - const char *zInput; - int nInput; - - const char *zArg = 0; - - const char *zToken; - int nToken; - int iStart; - int iEnd; - int iPos; - - Tcl_Obj *pRet; - - assert( argc==2 || argc==3 ); - - nName = sqlite3_value_bytes(argv[0]); - zName = (const char *)sqlite3_value_text(argv[0]); - nInput = sqlite3_value_bytes(argv[argc-1]); - zInput = (const char *)sqlite3_value_text(argv[argc-1]); - - if( argc==3 ){ - zArg = (const char *)sqlite3_value_text(argv[1]); - } - - pHash = (Fts3Hash *)sqlite3_user_data(context); - p = (sqlite3_tokenizer_module *)sqlite3Fts3HashFind(pHash, zName, nName+1); - - if( !p ){ - char *zErr = sqlite3_mprintf("unknown tokenizer: %s", zName); - sqlite3_result_error(context, zErr, -1); - sqlite3_free(zErr); - return; - } - - pRet = Tcl_NewObj(); - Tcl_IncrRefCount(pRet); - - if( SQLITE_OK!=p->xCreate(zArg ? 1 : 0, &zArg, &pTokenizer) ){ - zErr = "error in xCreate()"; - goto finish; - } - pTokenizer->pModule = p; - if( SQLITE_OK!=p->xOpen(pTokenizer, zInput, nInput, &pCsr) ){ - zErr = "error in xOpen()"; - goto finish; - } - pCsr->pTokenizer = pTokenizer; - - while( SQLITE_OK==p->xNext(pCsr, &zToken, &nToken, &iStart, &iEnd, &iPos) ){ - Tcl_ListObjAppendElement(0, pRet, Tcl_NewIntObj(iPos)); - Tcl_ListObjAppendElement(0, pRet, Tcl_NewStringObj(zToken, nToken)); - zToken = &zInput[iStart]; - nToken = iEnd-iStart; - Tcl_ListObjAppendElement(0, pRet, Tcl_NewStringObj(zToken, nToken)); - } - - if( SQLITE_OK!=p->xClose(pCsr) ){ - zErr = "error in xClose()"; - goto finish; - } - if( SQLITE_OK!=p->xDestroy(pTokenizer) ){ - zErr = "error in xDestroy()"; - goto finish; - } - -finish: - if( zErr ){ - sqlite3_result_error(context, zErr, -1); - }else{ - sqlite3_result_text(context, Tcl_GetString(pRet), -1, SQLITE_TRANSIENT); - } - Tcl_DecrRefCount(pRet); -} - -static -int registerTokenizer( - sqlite3 *db, - char *zName, - const sqlite3_tokenizer_module *p -){ - int rc; - sqlite3_stmt *pStmt; - const char zSql[] = "SELECT fts3_tokenizer(?, ?)"; - - rc = sqlite3_prepare_v2(db, zSql, -1, &pStmt, 0); - if( rc!=SQLITE_OK ){ - return rc; - } - - sqlite3_bind_text(pStmt, 1, zName, -1, SQLITE_STATIC); - sqlite3_bind_blob(pStmt, 2, &p, sizeof(p), SQLITE_STATIC); - sqlite3_step(pStmt); - - return sqlite3_finalize(pStmt); -} - -static -int queryTokenizer( - sqlite3 *db, - char *zName, - const sqlite3_tokenizer_module **pp -){ - int rc; - sqlite3_stmt *pStmt; - const char zSql[] = "SELECT fts3_tokenizer(?)"; - - *pp = 0; - rc = sqlite3_prepare_v2(db, zSql, -1, &pStmt, 0); - if( rc!=SQLITE_OK ){ - return rc; - } - - sqlite3_bind_text(pStmt, 1, zName, -1, SQLITE_STATIC); - if( SQLITE_ROW==sqlite3_step(pStmt) ){ - if( sqlite3_column_type(pStmt, 0)==SQLITE_BLOB ){ - memcpy((void *)pp, sqlite3_column_blob(pStmt, 0), sizeof(*pp)); - } - } - - return sqlite3_finalize(pStmt); -} - -void sqlite3Fts3SimpleTokenizerModule(sqlite3_tokenizer_module const**ppModule); - -/* -** Implementation of the scalar function fts3_tokenizer_internal_test(). -** This function is used for testing only, it is not included in the -** build unless SQLITE_TEST is defined. -** -** The purpose of this is to test that the fts3_tokenizer() function -** can be used as designed by the C-code in the queryTokenizer and -** registerTokenizer() functions above. These two functions are repeated -** in the README.tokenizer file as an example, so it is important to -** test them. -** -** To run the tests, evaluate the fts3_tokenizer_internal_test() scalar -** function with no arguments. An assert() will fail if a problem is -** detected. i.e.: -** -** SELECT fts3_tokenizer_internal_test(); -** -*/ -static void intTestFunc( - sqlite3_context *context, - int argc, - sqlite3_value **argv -){ - int rc; - const sqlite3_tokenizer_module *p1; - const sqlite3_tokenizer_module *p2; - sqlite3 *db = (sqlite3 *)sqlite3_user_data(context); - - UNUSED_PARAMETER(argc); - UNUSED_PARAMETER(argv); - - /* Test the query function */ - sqlite3Fts3SimpleTokenizerModule(&p1); - rc = queryTokenizer(db, "simple", &p2); - assert( rc==SQLITE_OK ); - assert( p1==p2 ); - rc = queryTokenizer(db, "nosuchtokenizer", &p2); - assert( rc==SQLITE_ERROR ); - assert( p2==0 ); - assert( 0==strcmp(sqlite3_errmsg(db), "unknown tokenizer: nosuchtokenizer") ); - - /* Test the storage function */ - rc = registerTokenizer(db, "nosuchtokenizer", p1); - assert( rc==SQLITE_OK ); - rc = queryTokenizer(db, "nosuchtokenizer", &p2); - assert( rc==SQLITE_OK ); - assert( p2==p1 ); - - sqlite3_result_text(context, "ok", -1, SQLITE_STATIC); -} - -#endif - -/* -** Set up SQL objects in database db used to access the contents of -** the hash table pointed to by argument pHash. The hash table must -** been initialised to use string keys, and to take a private copy -** of the key when a value is inserted. i.e. by a call similar to: -** -** sqlite3Fts3HashInit(pHash, FTS3_HASH_STRING, 1); -** -** This function adds a scalar function (see header comment above -** scalarFunc() in this file for details) and, if ENABLE_TABLE is -** defined at compilation time, a temporary virtual table (see header -** comment above struct HashTableVtab) to the database schema. Both -** provide read/write access to the contents of *pHash. -** -** The third argument to this function, zName, is used as the name -** of both the scalar and, if created, the virtual table. -*/ -int sqlite3Fts3InitHashTable( - sqlite3 *db, - Fts3Hash *pHash, - const char *zName -){ - int rc = SQLITE_OK; - void *p = (void *)pHash; - const int any = SQLITE_ANY; - -#ifdef SQLITE_TEST - char *zTest = 0; - char *zTest2 = 0; - void *pdb = (void *)db; - zTest = sqlite3_mprintf("%s_test", zName); - zTest2 = sqlite3_mprintf("%s_internal_test", zName); - if( !zTest || !zTest2 ){ - rc = SQLITE_NOMEM; - } -#endif - - if( SQLITE_OK==rc ){ - rc = sqlite3_create_function(db, zName, 1, any, p, scalarFunc, 0, 0); - } - if( SQLITE_OK==rc ){ - rc = sqlite3_create_function(db, zName, 2, any, p, scalarFunc, 0, 0); - } -#ifdef SQLITE_TEST - if( SQLITE_OK==rc ){ - rc = sqlite3_create_function(db, zTest, 2, any, p, testFunc, 0, 0); - } - if( SQLITE_OK==rc ){ - rc = sqlite3_create_function(db, zTest, 3, any, p, testFunc, 0, 0); - } - if( SQLITE_OK==rc ){ - rc = sqlite3_create_function(db, zTest2, 0, any, pdb, intTestFunc, 0, 0); - } -#endif - -#ifdef SQLITE_TEST - sqlite3_free(zTest); - sqlite3_free(zTest2); -#endif - - return rc; -} - -#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_tokenizer.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_tokenizer.h deleted file mode 100644 index d5b22b1e3c..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_tokenizer.h +++ /dev/null @@ -1,152 +0,0 @@ -/* -** 2006 July 10 -** -** The author disclaims copyright to this source code. -** -************************************************************************* -** Defines the interface to tokenizers used by fulltext-search. There -** are three basic components: -** -** sqlite3_tokenizer_module is a singleton defining the tokenizer -** interface functions. This is essentially the class structure for -** tokenizers. -** -** sqlite3_tokenizer is used to define a particular tokenizer, perhaps -** including customization information defined at creation time. -** -** sqlite3_tokenizer_cursor is generated by a tokenizer to generate -** tokens from a particular input. -*/ -#ifndef _FTS3_TOKENIZER_H_ -#define _FTS3_TOKENIZER_H_ - -/* TODO(shess) Only used for SQLITE_OK and SQLITE_DONE at this time. -** If tokenizers are to be allowed to call sqlite3_*() functions, then -** we will need a way to register the API consistently. -*/ -#include "sqlite3.h" - -/* -** Structures used by the tokenizer interface. When a new tokenizer -** implementation is registered, the caller provides a pointer to -** an sqlite3_tokenizer_module containing pointers to the callback -** functions that make up an implementation. -** -** When an fts3 table is created, it passes any arguments passed to -** the tokenizer clause of the CREATE VIRTUAL TABLE statement to the -** sqlite3_tokenizer_module.xCreate() function of the requested tokenizer -** implementation. The xCreate() function in turn returns an -** sqlite3_tokenizer structure representing the specific tokenizer to -** be used for the fts3 table (customized by the tokenizer clause arguments). -** -** To tokenize an input buffer, the sqlite3_tokenizer_module.xOpen() -** method is called. It returns an sqlite3_tokenizer_cursor object -** that may be used to tokenize a specific input buffer based on -** the tokenization rules supplied by a specific sqlite3_tokenizer -** object. -*/ -typedef struct sqlite3_tokenizer_module sqlite3_tokenizer_module; -typedef struct sqlite3_tokenizer sqlite3_tokenizer; -typedef struct sqlite3_tokenizer_cursor sqlite3_tokenizer_cursor; - -struct sqlite3_tokenizer_module { - - /* - ** Structure version. Should always be set to 0. - */ - int iVersion; - - /* - ** Create a new tokenizer. The values in the argv[] array are the - ** arguments passed to the "tokenizer" clause of the CREATE VIRTUAL - ** TABLE statement that created the fts3 table. For example, if - ** the following SQL is executed: - ** - ** CREATE .. USING fts3( ... , tokenizer arg1 arg2) - ** - ** then argc is set to 2, and the argv[] array contains pointers - ** to the strings "arg1" and "arg2". - ** - ** This method should return either SQLITE_OK (0), or an SQLite error - ** code. If SQLITE_OK is returned, then *ppTokenizer should be set - ** to point at the newly created tokenizer structure. The generic - ** sqlite3_tokenizer.pModule variable should not be initialised by - ** this callback. The caller will do so. - */ - int (*xCreate)( - int argc, /* Size of argv array */ - const char *const*argv, /* Tokenizer argument strings */ - sqlite3_tokenizer **ppTokenizer /* OUT: Created tokenizer */ - ); - - /* - ** Destroy an existing tokenizer. The fts3 module calls this method - ** exactly once for each successful call to xCreate(). - */ - int (*xDestroy)(sqlite3_tokenizer *pTokenizer); - - /* - ** Create a tokenizer cursor to tokenize an input buffer. The caller - ** is responsible for ensuring that the input buffer remains valid - ** until the cursor is closed (using the xClose() method). - */ - int (*xOpen)( - sqlite3_tokenizer *pTokenizer, /* Tokenizer object */ - const char *pInput, int nBytes, /* Input buffer */ - sqlite3_tokenizer_cursor **ppCursor /* OUT: Created tokenizer cursor */ - ); - - /* - ** Destroy an existing tokenizer cursor. The fts3 module calls this - ** method exactly once for each successful call to xOpen(). - */ - int (*xClose)(sqlite3_tokenizer_cursor *pCursor); - - /* - ** Retrieve the next token from the tokenizer cursor pCursor. This - ** method should either return SQLITE_OK and set the values of the - ** "OUT" variables identified below, or SQLITE_DONE to indicate that - ** the end of the buffer has been reached, or an SQLite error code. - ** - ** *ppToken should be set to point at a buffer containing the - ** normalized version of the token (i.e. after any case-folding and/or - ** stemming has been performed). *pnBytes should be set to the length - ** of this buffer in bytes. The input text that generated the token is - ** identified by the byte offsets returned in *piStartOffset and - ** *piEndOffset. *piStartOffset should be set to the index of the first - ** byte of the token in the input buffer. *piEndOffset should be set - ** to the index of the first byte just past the end of the token in - ** the input buffer. - ** - ** The buffer *ppToken is set to point at is managed by the tokenizer - ** implementation. It is only required to be valid until the next call - ** to xNext() or xClose(). - */ - /* TODO(shess) current implementation requires pInput to be - ** nul-terminated. This should either be fixed, or pInput/nBytes - ** should be converted to zInput. - */ - int (*xNext)( - sqlite3_tokenizer_cursor *pCursor, /* Tokenizer cursor */ - const char **ppToken, int *pnBytes, /* OUT: Normalized text for token */ - int *piStartOffset, /* OUT: Byte offset of token in input buffer */ - int *piEndOffset, /* OUT: Byte offset of end of token in input buffer */ - int *piPosition /* OUT: Number of tokens returned before this one */ - ); -}; - -struct sqlite3_tokenizer { - const sqlite3_tokenizer_module *pModule; /* The module for this tokenizer */ - /* Tokenizer implementations will typically add additional fields */ -}; - -struct sqlite3_tokenizer_cursor { - sqlite3_tokenizer *pTokenizer; /* Tokenizer for this cursor. */ - /* Tokenizer implementations will typically add additional fields */ -}; - -int fts3_global_term_cnt(int iTerm, int iCol); -int fts3_term_cnt(int iTerm, int iCol); - - -#endif /* _FTS3_TOKENIZER_H_ */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_tokenizer1.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_tokenizer1.c deleted file mode 100644 index 192946924f..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_tokenizer1.c +++ /dev/null @@ -1,233 +0,0 @@ -/* -** 2006 Oct 10 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** Implementation of the "simple" full-text-search tokenizer. -*/ - -/* -** The code in this file is only compiled if: -** -** * The FTS3 module is being built as an extension -** (in which case SQLITE_CORE is not defined), or -** -** * The FTS3 module is being built into the core of -** SQLite (in which case SQLITE_ENABLE_FTS3 is defined). -*/ -#include "fts3Int.h" -#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) - -#include -#include -#include -#include - -#include "fts3_tokenizer.h" - -typedef struct simple_tokenizer { - sqlite3_tokenizer base; - char delim[128]; /* flag ASCII delimiters */ -} simple_tokenizer; - -typedef struct simple_tokenizer_cursor { - sqlite3_tokenizer_cursor base; - const char *pInput; /* input we are tokenizing */ - int nBytes; /* size of the input */ - int iOffset; /* current position in pInput */ - int iToken; /* index of next token to be returned */ - char *pToken; /* storage for current token */ - int nTokenAllocated; /* space allocated to zToken buffer */ -} simple_tokenizer_cursor; - - -static int simpleDelim(simple_tokenizer *t, unsigned char c){ - return c<0x80 && t->delim[c]; -} -static int fts3_isalnum(int x){ - return (x>='0' && x<='9') || (x>='A' && x<='Z') || (x>='a' && x<='z'); -} - -/* -** Create a new tokenizer instance. -*/ -static int simpleCreate( - int argc, const char * const *argv, - sqlite3_tokenizer **ppTokenizer -){ - simple_tokenizer *t; - - t = (simple_tokenizer *) sqlite3_malloc(sizeof(*t)); - if( t==NULL ) return SQLITE_NOMEM; - memset(t, 0, sizeof(*t)); - - /* TODO(shess) Delimiters need to remain the same from run to run, - ** else we need to reindex. One solution would be a meta-table to - ** track such information in the database, then we'd only want this - ** information on the initial create. - */ - if( argc>1 ){ - int i, n = (int)strlen(argv[1]); - for(i=0; i=0x80 ){ - sqlite3_free(t); - return SQLITE_ERROR; - } - t->delim[ch] = 1; - } - } else { - /* Mark non-alphanumeric ASCII characters as delimiters */ - int i; - for(i=1; i<0x80; i++){ - t->delim[i] = !fts3_isalnum(i) ? -1 : 0; - } - } - - *ppTokenizer = &t->base; - return SQLITE_OK; -} - -/* -** Destroy a tokenizer -*/ -static int simpleDestroy(sqlite3_tokenizer *pTokenizer){ - sqlite3_free(pTokenizer); - return SQLITE_OK; -} - -/* -** Prepare to begin tokenizing a particular string. The input -** string to be tokenized is pInput[0..nBytes-1]. A cursor -** used to incrementally tokenize this string is returned in -** *ppCursor. -*/ -static int simpleOpen( - sqlite3_tokenizer *pTokenizer, /* The tokenizer */ - const char *pInput, int nBytes, /* String to be tokenized */ - sqlite3_tokenizer_cursor **ppCursor /* OUT: Tokenization cursor */ -){ - simple_tokenizer_cursor *c; - - UNUSED_PARAMETER(pTokenizer); - - c = (simple_tokenizer_cursor *) sqlite3_malloc(sizeof(*c)); - if( c==NULL ) return SQLITE_NOMEM; - - c->pInput = pInput; - if( pInput==0 ){ - c->nBytes = 0; - }else if( nBytes<0 ){ - c->nBytes = (int)strlen(pInput); - }else{ - c->nBytes = nBytes; - } - c->iOffset = 0; /* start tokenizing at the beginning */ - c->iToken = 0; - c->pToken = NULL; /* no space allocated, yet. */ - c->nTokenAllocated = 0; - - *ppCursor = &c->base; - return SQLITE_OK; -} - -/* -** Close a tokenization cursor previously opened by a call to -** simpleOpen() above. -*/ -static int simpleClose(sqlite3_tokenizer_cursor *pCursor){ - simple_tokenizer_cursor *c = (simple_tokenizer_cursor *) pCursor; - sqlite3_free(c->pToken); - sqlite3_free(c); - return SQLITE_OK; -} - -/* -** Extract the next token from a tokenization cursor. The cursor must -** have been opened by a prior call to simpleOpen(). -*/ -static int simpleNext( - sqlite3_tokenizer_cursor *pCursor, /* Cursor returned by simpleOpen */ - const char **ppToken, /* OUT: *ppToken is the token text */ - int *pnBytes, /* OUT: Number of bytes in token */ - int *piStartOffset, /* OUT: Starting offset of token */ - int *piEndOffset, /* OUT: Ending offset of token */ - int *piPosition /* OUT: Position integer of token */ -){ - simple_tokenizer_cursor *c = (simple_tokenizer_cursor *) pCursor; - simple_tokenizer *t = (simple_tokenizer *) pCursor->pTokenizer; - unsigned char *p = (unsigned char *)c->pInput; - - while( c->iOffsetnBytes ){ - int iStartOffset; - - /* Scan past delimiter characters */ - while( c->iOffsetnBytes && simpleDelim(t, p[c->iOffset]) ){ - c->iOffset++; - } - - /* Count non-delimiter characters. */ - iStartOffset = c->iOffset; - while( c->iOffsetnBytes && !simpleDelim(t, p[c->iOffset]) ){ - c->iOffset++; - } - - if( c->iOffset>iStartOffset ){ - int i, n = c->iOffset-iStartOffset; - if( n>c->nTokenAllocated ){ - char *pNew; - c->nTokenAllocated = n+20; - pNew = sqlite3_realloc(c->pToken, c->nTokenAllocated); - if( !pNew ) return SQLITE_NOMEM; - c->pToken = pNew; - } - for(i=0; ipToken[i] = (char)((ch>='A' && ch<='Z') ? ch-'A'+'a' : ch); - } - *ppToken = c->pToken; - *pnBytes = n; - *piStartOffset = iStartOffset; - *piEndOffset = c->iOffset; - *piPosition = c->iToken++; - - return SQLITE_OK; - } - } - return SQLITE_DONE; -} - -/* -** The set of routines that implement the simple tokenizer -*/ -static const sqlite3_tokenizer_module simpleTokenizerModule = { - 0, - simpleCreate, - simpleDestroy, - simpleOpen, - simpleClose, - simpleNext, -}; - -/* -** Allocate a new simple tokenizer. Return a pointer to the new -** tokenizer in *ppModule -*/ -void sqlite3Fts3SimpleTokenizerModule( - sqlite3_tokenizer_module const**ppModule -){ - *ppModule = &simpleTokenizerModule; -} - -#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_write.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_write.c deleted file mode 100644 index 1e0e2568c9..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3_write.c +++ /dev/null @@ -1,3397 +0,0 @@ -/* -** 2009 Oct 23 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This file is part of the SQLite FTS3 extension module. Specifically, -** this file contains code to insert, update and delete rows from FTS3 -** tables. It also contains code to merge FTS3 b-tree segments. Some -** of the sub-routines used to merge segments are also used by the query -** code in fts3.c. -*/ - -#include "fts3Int.h" -#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS3) - -#include -#include -#include - -/* -** When full-text index nodes are loaded from disk, the buffer that they -** are loaded into has the following number of bytes of padding at the end -** of it. i.e. if a full-text index node is 900 bytes in size, then a buffer -** of 920 bytes is allocated for it. -** -** This means that if we have a pointer into a buffer containing node data, -** it is always safe to read up to two varints from it without risking an -** overread, even if the node data is corrupted. -*/ -#define FTS3_NODE_PADDING (FTS3_VARINT_MAX*2) - -/* -** Under certain circumstances, b-tree nodes (doclists) can be loaded into -** memory incrementally instead of all at once. This can be a big performance -** win (reduced IO and CPU) if SQLite stops calling the virtual table xNext() -** method before retrieving all query results (as may happen, for example, -** if a query has a LIMIT clause). -** -** Incremental loading is used for b-tree nodes FTS3_NODE_CHUNK_THRESHOLD -** bytes and larger. Nodes are loaded in chunks of FTS3_NODE_CHUNKSIZE bytes. -** The code is written so that the hard lower-limit for each of these values -** is 1. Clearly such small values would be inefficient, but can be useful -** for testing purposes. -** -** If this module is built with SQLITE_TEST defined, these constants may -** be overridden at runtime for testing purposes. File fts3_test.c contains -** a Tcl interface to read and write the values. -*/ -#ifdef SQLITE_TEST -int test_fts3_node_chunksize = (4*1024); -int test_fts3_node_chunk_threshold = (4*1024)*4; -# define FTS3_NODE_CHUNKSIZE test_fts3_node_chunksize -# define FTS3_NODE_CHUNK_THRESHOLD test_fts3_node_chunk_threshold -#else -# define FTS3_NODE_CHUNKSIZE (4*1024) -# define FTS3_NODE_CHUNK_THRESHOLD (FTS3_NODE_CHUNKSIZE*4) -#endif - -typedef struct PendingList PendingList; -typedef struct SegmentNode SegmentNode; -typedef struct SegmentWriter SegmentWriter; - -/* -** An instance of the following data structure is used to build doclists -** incrementally. See function fts3PendingListAppend() for details. -*/ -struct PendingList { - int nData; - char *aData; - int nSpace; - sqlite3_int64 iLastDocid; - sqlite3_int64 iLastCol; - sqlite3_int64 iLastPos; -}; - - -/* -** Each cursor has a (possibly empty) linked list of the following objects. -*/ -struct Fts3DeferredToken { - Fts3PhraseToken *pToken; /* Pointer to corresponding expr token */ - int iCol; /* Column token must occur in */ - Fts3DeferredToken *pNext; /* Next in list of deferred tokens */ - PendingList *pList; /* Doclist is assembled here */ -}; - -/* -** An instance of this structure is used to iterate through the terms on -** a contiguous set of segment b-tree leaf nodes. Although the details of -** this structure are only manipulated by code in this file, opaque handles -** of type Fts3SegReader* are also used by code in fts3.c to iterate through -** terms when querying the full-text index. See functions: -** -** sqlite3Fts3SegReaderNew() -** sqlite3Fts3SegReaderFree() -** sqlite3Fts3SegReaderIterate() -** -** Methods used to manipulate Fts3SegReader structures: -** -** fts3SegReaderNext() -** fts3SegReaderFirstDocid() -** fts3SegReaderNextDocid() -*/ -struct Fts3SegReader { - int iIdx; /* Index within level, or 0x7FFFFFFF for PT */ - - sqlite3_int64 iStartBlock; /* Rowid of first leaf block to traverse */ - sqlite3_int64 iLeafEndBlock; /* Rowid of final leaf block to traverse */ - sqlite3_int64 iEndBlock; /* Rowid of final block in segment (or 0) */ - sqlite3_int64 iCurrentBlock; /* Current leaf block (or 0) */ - - char *aNode; /* Pointer to node data (or NULL) */ - int nNode; /* Size of buffer at aNode (or 0) */ - int nPopulate; /* If >0, bytes of buffer aNode[] loaded */ - sqlite3_blob *pBlob; /* If not NULL, blob handle to read node */ - - Fts3HashElem **ppNextElem; - - /* Variables set by fts3SegReaderNext(). These may be read directly - ** by the caller. They are valid from the time SegmentReaderNew() returns - ** until SegmentReaderNext() returns something other than SQLITE_OK - ** (i.e. SQLITE_DONE). - */ - int nTerm; /* Number of bytes in current term */ - char *zTerm; /* Pointer to current term */ - int nTermAlloc; /* Allocated size of zTerm buffer */ - char *aDoclist; /* Pointer to doclist of current entry */ - int nDoclist; /* Size of doclist in current entry */ - - /* The following variables are used by fts3SegReaderNextDocid() to iterate - ** through the current doclist (aDoclist/nDoclist). - */ - char *pOffsetList; - int nOffsetList; /* For descending pending seg-readers only */ - sqlite3_int64 iDocid; -}; - -#define fts3SegReaderIsPending(p) ((p)->ppNextElem!=0) -#define fts3SegReaderIsRootOnly(p) ((p)->aNode==(char *)&(p)[1]) - -/* -** An instance of this structure is used to create a segment b-tree in the -** database. The internal details of this type are only accessed by the -** following functions: -** -** fts3SegWriterAdd() -** fts3SegWriterFlush() -** fts3SegWriterFree() -*/ -struct SegmentWriter { - SegmentNode *pTree; /* Pointer to interior tree structure */ - sqlite3_int64 iFirst; /* First slot in %_segments written */ - sqlite3_int64 iFree; /* Next free slot in %_segments */ - char *zTerm; /* Pointer to previous term buffer */ - int nTerm; /* Number of bytes in zTerm */ - int nMalloc; /* Size of malloc'd buffer at zMalloc */ - char *zMalloc; /* Malloc'd space (possibly) used for zTerm */ - int nSize; /* Size of allocation at aData */ - int nData; /* Bytes of data in aData */ - char *aData; /* Pointer to block from malloc() */ -}; - -/* -** Type SegmentNode is used by the following three functions to create -** the interior part of the segment b+-tree structures (everything except -** the leaf nodes). These functions and type are only ever used by code -** within the fts3SegWriterXXX() family of functions described above. -** -** fts3NodeAddTerm() -** fts3NodeWrite() -** fts3NodeFree() -** -** When a b+tree is written to the database (either as a result of a merge -** or the pending-terms table being flushed), leaves are written into the -** database file as soon as they are completely populated. The interior of -** the tree is assembled in memory and written out only once all leaves have -** been populated and stored. This is Ok, as the b+-tree fanout is usually -** very large, meaning that the interior of the tree consumes relatively -** little memory. -*/ -struct SegmentNode { - SegmentNode *pParent; /* Parent node (or NULL for root node) */ - SegmentNode *pRight; /* Pointer to right-sibling */ - SegmentNode *pLeftmost; /* Pointer to left-most node of this depth */ - int nEntry; /* Number of terms written to node so far */ - char *zTerm; /* Pointer to previous term buffer */ - int nTerm; /* Number of bytes in zTerm */ - int nMalloc; /* Size of malloc'd buffer at zMalloc */ - char *zMalloc; /* Malloc'd space (possibly) used for zTerm */ - int nData; /* Bytes of valid data so far */ - char *aData; /* Node data */ -}; - -/* -** Valid values for the second argument to fts3SqlStmt(). -*/ -#define SQL_DELETE_CONTENT 0 -#define SQL_IS_EMPTY 1 -#define SQL_DELETE_ALL_CONTENT 2 -#define SQL_DELETE_ALL_SEGMENTS 3 -#define SQL_DELETE_ALL_SEGDIR 4 -#define SQL_DELETE_ALL_DOCSIZE 5 -#define SQL_DELETE_ALL_STAT 6 -#define SQL_SELECT_CONTENT_BY_ROWID 7 -#define SQL_NEXT_SEGMENT_INDEX 8 -#define SQL_INSERT_SEGMENTS 9 -#define SQL_NEXT_SEGMENTS_ID 10 -#define SQL_INSERT_SEGDIR 11 -#define SQL_SELECT_LEVEL 12 -#define SQL_SELECT_LEVEL_RANGE 13 -#define SQL_SELECT_LEVEL_COUNT 14 -#define SQL_SELECT_SEGDIR_MAX_LEVEL 15 -#define SQL_DELETE_SEGDIR_LEVEL 16 -#define SQL_DELETE_SEGMENTS_RANGE 17 -#define SQL_CONTENT_INSERT 18 -#define SQL_DELETE_DOCSIZE 19 -#define SQL_REPLACE_DOCSIZE 20 -#define SQL_SELECT_DOCSIZE 21 -#define SQL_SELECT_DOCTOTAL 22 -#define SQL_REPLACE_DOCTOTAL 23 - -#define SQL_SELECT_ALL_PREFIX_LEVEL 24 -#define SQL_DELETE_ALL_TERMS_SEGDIR 25 - -#define SQL_DELETE_SEGDIR_RANGE 26 - -/* -** This function is used to obtain an SQLite prepared statement handle -** for the statement identified by the second argument. If successful, -** *pp is set to the requested statement handle and SQLITE_OK returned. -** Otherwise, an SQLite error code is returned and *pp is set to 0. -** -** If argument apVal is not NULL, then it must point to an array with -** at least as many entries as the requested statement has bound -** parameters. The values are bound to the statements parameters before -** returning. -*/ -static int fts3SqlStmt( - Fts3Table *p, /* Virtual table handle */ - int eStmt, /* One of the SQL_XXX constants above */ - sqlite3_stmt **pp, /* OUT: Statement handle */ - sqlite3_value **apVal /* Values to bind to statement */ -){ - const char *azSql[] = { -/* 0 */ "DELETE FROM %Q.'%q_content' WHERE rowid = ?", -/* 1 */ "SELECT NOT EXISTS(SELECT docid FROM %Q.'%q_content' WHERE rowid!=?)", -/* 2 */ "DELETE FROM %Q.'%q_content'", -/* 3 */ "DELETE FROM %Q.'%q_segments'", -/* 4 */ "DELETE FROM %Q.'%q_segdir'", -/* 5 */ "DELETE FROM %Q.'%q_docsize'", -/* 6 */ "DELETE FROM %Q.'%q_stat'", -/* 7 */ "SELECT %s WHERE rowid=?", -/* 8 */ "SELECT (SELECT max(idx) FROM %Q.'%q_segdir' WHERE level = ?) + 1", -/* 9 */ "INSERT INTO %Q.'%q_segments'(blockid, block) VALUES(?, ?)", -/* 10 */ "SELECT coalesce((SELECT max(blockid) FROM %Q.'%q_segments') + 1, 1)", -/* 11 */ "INSERT INTO %Q.'%q_segdir' VALUES(?,?,?,?,?,?)", - - /* Return segments in order from oldest to newest.*/ -/* 12 */ "SELECT idx, start_block, leaves_end_block, end_block, root " - "FROM %Q.'%q_segdir' WHERE level = ? ORDER BY idx ASC", -/* 13 */ "SELECT idx, start_block, leaves_end_block, end_block, root " - "FROM %Q.'%q_segdir' WHERE level BETWEEN ? AND ?" - "ORDER BY level DESC, idx ASC", - -/* 14 */ "SELECT count(*) FROM %Q.'%q_segdir' WHERE level = ?", -/* 15 */ "SELECT max(level) FROM %Q.'%q_segdir' WHERE level BETWEEN ? AND ?", - -/* 16 */ "DELETE FROM %Q.'%q_segdir' WHERE level = ?", -/* 17 */ "DELETE FROM %Q.'%q_segments' WHERE blockid BETWEEN ? AND ?", -/* 18 */ "INSERT INTO %Q.'%q_content' VALUES(%s)", -/* 19 */ "DELETE FROM %Q.'%q_docsize' WHERE docid = ?", -/* 20 */ "REPLACE INTO %Q.'%q_docsize' VALUES(?,?)", -/* 21 */ "SELECT size FROM %Q.'%q_docsize' WHERE docid=?", -/* 22 */ "SELECT value FROM %Q.'%q_stat' WHERE id=0", -/* 23 */ "REPLACE INTO %Q.'%q_stat' VALUES(0,?)", -/* 24 */ "", -/* 25 */ "", - -/* 26 */ "DELETE FROM %Q.'%q_segdir' WHERE level BETWEEN ? AND ?", - - }; - int rc = SQLITE_OK; - sqlite3_stmt *pStmt; - - assert( SizeofArray(azSql)==SizeofArray(p->aStmt) ); - assert( eStmt=0 ); - - pStmt = p->aStmt[eStmt]; - if( !pStmt ){ - char *zSql; - if( eStmt==SQL_CONTENT_INSERT ){ - zSql = sqlite3_mprintf(azSql[eStmt], p->zDb, p->zName, p->zWriteExprlist); - }else if( eStmt==SQL_SELECT_CONTENT_BY_ROWID ){ - zSql = sqlite3_mprintf(azSql[eStmt], p->zReadExprlist); - }else{ - zSql = sqlite3_mprintf(azSql[eStmt], p->zDb, p->zName); - } - if( !zSql ){ - rc = SQLITE_NOMEM; - }else{ - rc = sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, NULL); - sqlite3_free(zSql); - assert( rc==SQLITE_OK || pStmt==0 ); - p->aStmt[eStmt] = pStmt; - } - } - if( apVal ){ - int i; - int nParam = sqlite3_bind_parameter_count(pStmt); - for(i=0; rc==SQLITE_OK && izContentTbl==0 ){ - rc = fts3SqlStmt(p, SQL_SELECT_CONTENT_BY_ROWID, &pStmt, 0); - if( rc==SQLITE_OK ){ - sqlite3_bind_null(pStmt, 1); - sqlite3_step(pStmt); - rc = sqlite3_reset(pStmt); - } - }else{ - rc = SQLITE_OK; - } - - return rc; -} - -/* -** Set *ppStmt to a statement handle that may be used to iterate through -** all rows in the %_segdir table, from oldest to newest. If successful, -** return SQLITE_OK. If an error occurs while preparing the statement, -** return an SQLite error code. -** -** There is only ever one instance of this SQL statement compiled for -** each FTS3 table. -** -** The statement returns the following columns from the %_segdir table: -** -** 0: idx -** 1: start_block -** 2: leaves_end_block -** 3: end_block -** 4: root -*/ -int sqlite3Fts3AllSegdirs( - Fts3Table *p, /* FTS3 table */ - int iIndex, /* Index for p->aIndex[] */ - int iLevel, /* Level to select */ - sqlite3_stmt **ppStmt /* OUT: Compiled statement */ -){ - int rc; - sqlite3_stmt *pStmt = 0; - - assert( iLevel==FTS3_SEGCURSOR_ALL || iLevel>=0 ); - assert( iLevel=0 && iIndexnIndex ); - - if( iLevel<0 ){ - /* "SELECT * FROM %_segdir WHERE level BETWEEN ? AND ? ORDER BY ..." */ - rc = fts3SqlStmt(p, SQL_SELECT_LEVEL_RANGE, &pStmt, 0); - if( rc==SQLITE_OK ){ - sqlite3_bind_int(pStmt, 1, iIndex*FTS3_SEGDIR_MAXLEVEL); - sqlite3_bind_int(pStmt, 2, (iIndex+1)*FTS3_SEGDIR_MAXLEVEL-1); - } - }else{ - /* "SELECT * FROM %_segdir WHERE level = ? ORDER BY ..." */ - rc = fts3SqlStmt(p, SQL_SELECT_LEVEL, &pStmt, 0); - if( rc==SQLITE_OK ){ - sqlite3_bind_int(pStmt, 1, iLevel+iIndex*FTS3_SEGDIR_MAXLEVEL); - } - } - *ppStmt = pStmt; - return rc; -} - - -/* -** Append a single varint to a PendingList buffer. SQLITE_OK is returned -** if successful, or an SQLite error code otherwise. -** -** This function also serves to allocate the PendingList structure itself. -** For example, to create a new PendingList structure containing two -** varints: -** -** PendingList *p = 0; -** fts3PendingListAppendVarint(&p, 1); -** fts3PendingListAppendVarint(&p, 2); -*/ -static int fts3PendingListAppendVarint( - PendingList **pp, /* IN/OUT: Pointer to PendingList struct */ - sqlite3_int64 i /* Value to append to data */ -){ - PendingList *p = *pp; - - /* Allocate or grow the PendingList as required. */ - if( !p ){ - p = sqlite3_malloc(sizeof(*p) + 100); - if( !p ){ - return SQLITE_NOMEM; - } - p->nSpace = 100; - p->aData = (char *)&p[1]; - p->nData = 0; - } - else if( p->nData+FTS3_VARINT_MAX+1>p->nSpace ){ - int nNew = p->nSpace * 2; - p = sqlite3_realloc(p, sizeof(*p) + nNew); - if( !p ){ - sqlite3_free(*pp); - *pp = 0; - return SQLITE_NOMEM; - } - p->nSpace = nNew; - p->aData = (char *)&p[1]; - } - - /* Append the new serialized varint to the end of the list. */ - p->nData += sqlite3Fts3PutVarint(&p->aData[p->nData], i); - p->aData[p->nData] = '\0'; - *pp = p; - return SQLITE_OK; -} - -/* -** Add a docid/column/position entry to a PendingList structure. Non-zero -** is returned if the structure is sqlite3_realloced as part of adding -** the entry. Otherwise, zero. -** -** If an OOM error occurs, *pRc is set to SQLITE_NOMEM before returning. -** Zero is always returned in this case. Otherwise, if no OOM error occurs, -** it is set to SQLITE_OK. -*/ -static int fts3PendingListAppend( - PendingList **pp, /* IN/OUT: PendingList structure */ - sqlite3_int64 iDocid, /* Docid for entry to add */ - sqlite3_int64 iCol, /* Column for entry to add */ - sqlite3_int64 iPos, /* Position of term for entry to add */ - int *pRc /* OUT: Return code */ -){ - PendingList *p = *pp; - int rc = SQLITE_OK; - - assert( !p || p->iLastDocid<=iDocid ); - - if( !p || p->iLastDocid!=iDocid ){ - sqlite3_int64 iDelta = iDocid - (p ? p->iLastDocid : 0); - if( p ){ - assert( p->nDatanSpace ); - assert( p->aData[p->nData]==0 ); - p->nData++; - } - if( SQLITE_OK!=(rc = fts3PendingListAppendVarint(&p, iDelta)) ){ - goto pendinglistappend_out; - } - p->iLastCol = -1; - p->iLastPos = 0; - p->iLastDocid = iDocid; - } - if( iCol>0 && p->iLastCol!=iCol ){ - if( SQLITE_OK!=(rc = fts3PendingListAppendVarint(&p, 1)) - || SQLITE_OK!=(rc = fts3PendingListAppendVarint(&p, iCol)) - ){ - goto pendinglistappend_out; - } - p->iLastCol = iCol; - p->iLastPos = 0; - } - if( iCol>=0 ){ - assert( iPos>p->iLastPos || (iPos==0 && p->iLastPos==0) ); - rc = fts3PendingListAppendVarint(&p, 2+iPos-p->iLastPos); - if( rc==SQLITE_OK ){ - p->iLastPos = iPos; - } - } - - pendinglistappend_out: - *pRc = rc; - if( p!=*pp ){ - *pp = p; - return 1; - } - return 0; -} - -/* -** Free a PendingList object allocated by fts3PendingListAppend(). -*/ -static void fts3PendingListDelete(PendingList *pList){ - sqlite3_free(pList); -} - -/* -** Add an entry to one of the pending-terms hash tables. -*/ -static int fts3PendingTermsAddOne( - Fts3Table *p, - int iCol, - int iPos, - Fts3Hash *pHash, /* Pending terms hash table to add entry to */ - const char *zToken, - int nToken -){ - PendingList *pList; - int rc = SQLITE_OK; - - pList = (PendingList *)fts3HashFind(pHash, zToken, nToken); - if( pList ){ - p->nPendingData -= (pList->nData + nToken + sizeof(Fts3HashElem)); - } - if( fts3PendingListAppend(&pList, p->iPrevDocid, iCol, iPos, &rc) ){ - if( pList==fts3HashInsert(pHash, zToken, nToken, pList) ){ - /* Malloc failed while inserting the new entry. This can only - ** happen if there was no previous entry for this token. - */ - assert( 0==fts3HashFind(pHash, zToken, nToken) ); - sqlite3_free(pList); - rc = SQLITE_NOMEM; - } - } - if( rc==SQLITE_OK ){ - p->nPendingData += (pList->nData + nToken + sizeof(Fts3HashElem)); - } - return rc; -} - -/* -** Tokenize the nul-terminated string zText and add all tokens to the -** pending-terms hash-table. The docid used is that currently stored in -** p->iPrevDocid, and the column is specified by argument iCol. -** -** If successful, SQLITE_OK is returned. Otherwise, an SQLite error code. -*/ -static int fts3PendingTermsAdd( - Fts3Table *p, /* Table into which text will be inserted */ - const char *zText, /* Text of document to be inserted */ - int iCol, /* Column into which text is being inserted */ - u32 *pnWord /* OUT: Number of tokens inserted */ -){ - int rc; - int iStart; - int iEnd; - int iPos; - int nWord = 0; - - char const *zToken; - int nToken; - - sqlite3_tokenizer *pTokenizer = p->pTokenizer; - sqlite3_tokenizer_module const *pModule = pTokenizer->pModule; - sqlite3_tokenizer_cursor *pCsr; - int (*xNext)(sqlite3_tokenizer_cursor *pCursor, - const char**,int*,int*,int*,int*); - - assert( pTokenizer && pModule ); - - /* If the user has inserted a NULL value, this function may be called with - ** zText==0. In this case, add zero token entries to the hash table and - ** return early. */ - if( zText==0 ){ - *pnWord = 0; - return SQLITE_OK; - } - - rc = pModule->xOpen(pTokenizer, zText, -1, &pCsr); - if( rc!=SQLITE_OK ){ - return rc; - } - pCsr->pTokenizer = pTokenizer; - - xNext = pModule->xNext; - while( SQLITE_OK==rc - && SQLITE_OK==(rc = xNext(pCsr, &zToken, &nToken, &iStart, &iEnd, &iPos)) - ){ - int i; - if( iPos>=nWord ) nWord = iPos+1; - - /* Positions cannot be negative; we use -1 as a terminator internally. - ** Tokens must have a non-zero length. - */ - if( iPos<0 || !zToken || nToken<=0 ){ - rc = SQLITE_ERROR; - break; - } - - /* Add the term to the terms index */ - rc = fts3PendingTermsAddOne( - p, iCol, iPos, &p->aIndex[0].hPending, zToken, nToken - ); - - /* Add the term to each of the prefix indexes that it is not too - ** short for. */ - for(i=1; rc==SQLITE_OK && inIndex; i++){ - struct Fts3Index *pIndex = &p->aIndex[i]; - if( nTokennPrefix ) continue; - rc = fts3PendingTermsAddOne( - p, iCol, iPos, &pIndex->hPending, zToken, pIndex->nPrefix - ); - } - } - - pModule->xClose(pCsr); - *pnWord = nWord; - return (rc==SQLITE_DONE ? SQLITE_OK : rc); -} - -/* -** Calling this function indicates that subsequent calls to -** fts3PendingTermsAdd() are to add term/position-list pairs for the -** contents of the document with docid iDocid. -*/ -static int fts3PendingTermsDocid(Fts3Table *p, sqlite_int64 iDocid){ - /* TODO(shess) Explore whether partially flushing the buffer on - ** forced-flush would provide better performance. I suspect that if - ** we ordered the doclists by size and flushed the largest until the - ** buffer was half empty, that would let the less frequent terms - ** generate longer doclists. - */ - if( iDocid<=p->iPrevDocid || p->nPendingData>p->nMaxPendingData ){ - int rc = sqlite3Fts3PendingTermsFlush(p); - if( rc!=SQLITE_OK ) return rc; - } - p->iPrevDocid = iDocid; - return SQLITE_OK; -} - -/* -** Discard the contents of the pending-terms hash tables. -*/ -void sqlite3Fts3PendingTermsClear(Fts3Table *p){ - int i; - for(i=0; inIndex; i++){ - Fts3HashElem *pElem; - Fts3Hash *pHash = &p->aIndex[i].hPending; - for(pElem=fts3HashFirst(pHash); pElem; pElem=fts3HashNext(pElem)){ - PendingList *pList = (PendingList *)fts3HashData(pElem); - fts3PendingListDelete(pList); - } - fts3HashClear(pHash); - } - p->nPendingData = 0; -} - -/* -** This function is called by the xUpdate() method as part of an INSERT -** operation. It adds entries for each term in the new record to the -** pendingTerms hash table. -** -** Argument apVal is the same as the similarly named argument passed to -** fts3InsertData(). Parameter iDocid is the docid of the new row. -*/ -static int fts3InsertTerms(Fts3Table *p, sqlite3_value **apVal, u32 *aSz){ - int i; /* Iterator variable */ - for(i=2; inColumn+2; i++){ - const char *zText = (const char *)sqlite3_value_text(apVal[i]); - int rc = fts3PendingTermsAdd(p, zText, i-2, &aSz[i-2]); - if( rc!=SQLITE_OK ){ - return rc; - } - aSz[p->nColumn] += sqlite3_value_bytes(apVal[i]); - } - return SQLITE_OK; -} - -/* -** This function is called by the xUpdate() method for an INSERT operation. -** The apVal parameter is passed a copy of the apVal argument passed by -** SQLite to the xUpdate() method. i.e: -** -** apVal[0] Not used for INSERT. -** apVal[1] rowid -** apVal[2] Left-most user-defined column -** ... -** apVal[p->nColumn+1] Right-most user-defined column -** apVal[p->nColumn+2] Hidden column with same name as table -** apVal[p->nColumn+3] Hidden "docid" column (alias for rowid) -*/ -static int fts3InsertData( - Fts3Table *p, /* Full-text table */ - sqlite3_value **apVal, /* Array of values to insert */ - sqlite3_int64 *piDocid /* OUT: Docid for row just inserted */ -){ - int rc; /* Return code */ - sqlite3_stmt *pContentInsert; /* INSERT INTO %_content VALUES(...) */ - - if( p->zContentTbl ){ - sqlite3_value *pRowid = apVal[p->nColumn+3]; - if( sqlite3_value_type(pRowid)==SQLITE_NULL ){ - pRowid = apVal[1]; - } - if( sqlite3_value_type(pRowid)!=SQLITE_INTEGER ){ - return SQLITE_CONSTRAINT; - } - *piDocid = sqlite3_value_int64(pRowid); - return SQLITE_OK; - } - - /* Locate the statement handle used to insert data into the %_content - ** table. The SQL for this statement is: - ** - ** INSERT INTO %_content VALUES(?, ?, ?, ...) - ** - ** The statement features N '?' variables, where N is the number of user - ** defined columns in the FTS3 table, plus one for the docid field. - */ - rc = fts3SqlStmt(p, SQL_CONTENT_INSERT, &pContentInsert, &apVal[1]); - if( rc!=SQLITE_OK ){ - return rc; - } - - /* There is a quirk here. The users INSERT statement may have specified - ** a value for the "rowid" field, for the "docid" field, or for both. - ** Which is a problem, since "rowid" and "docid" are aliases for the - ** same value. For example: - ** - ** INSERT INTO fts3tbl(rowid, docid) VALUES(1, 2); - ** - ** In FTS3, this is an error. It is an error to specify non-NULL values - ** for both docid and some other rowid alias. - */ - if( SQLITE_NULL!=sqlite3_value_type(apVal[3+p->nColumn]) ){ - if( SQLITE_NULL==sqlite3_value_type(apVal[0]) - && SQLITE_NULL!=sqlite3_value_type(apVal[1]) - ){ - /* A rowid/docid conflict. */ - return SQLITE_ERROR; - } - rc = sqlite3_bind_value(pContentInsert, 1, apVal[3+p->nColumn]); - if( rc!=SQLITE_OK ) return rc; - } - - /* Execute the statement to insert the record. Set *piDocid to the - ** new docid value. - */ - sqlite3_step(pContentInsert); - rc = sqlite3_reset(pContentInsert); - - *piDocid = sqlite3_last_insert_rowid(p->db); - return rc; -} - - - -/* -** Remove all data from the FTS3 table. Clear the hash table containing -** pending terms. -*/ -static int fts3DeleteAll(Fts3Table *p, int bContent){ - int rc = SQLITE_OK; /* Return code */ - - /* Discard the contents of the pending-terms hash table. */ - sqlite3Fts3PendingTermsClear(p); - - /* Delete everything from the shadow tables. Except, leave %_content as - ** is if bContent is false. */ - assert( p->zContentTbl==0 || bContent==0 ); - if( bContent ) fts3SqlExec(&rc, p, SQL_DELETE_ALL_CONTENT, 0); - fts3SqlExec(&rc, p, SQL_DELETE_ALL_SEGMENTS, 0); - fts3SqlExec(&rc, p, SQL_DELETE_ALL_SEGDIR, 0); - if( p->bHasDocsize ){ - fts3SqlExec(&rc, p, SQL_DELETE_ALL_DOCSIZE, 0); - } - if( p->bHasStat ){ - fts3SqlExec(&rc, p, SQL_DELETE_ALL_STAT, 0); - } - return rc; -} - -/* -** The first element in the apVal[] array is assumed to contain the docid -** (an integer) of a row about to be deleted. Remove all terms from the -** full-text index. -*/ -static void fts3DeleteTerms( - int *pRC, /* Result code */ - Fts3Table *p, /* The FTS table to delete from */ - sqlite3_value *pRowid, /* The docid to be deleted */ - u32 *aSz /* Sizes of deleted document written here */ -){ - int rc; - sqlite3_stmt *pSelect; - - if( *pRC ) return; - rc = fts3SqlStmt(p, SQL_SELECT_CONTENT_BY_ROWID, &pSelect, &pRowid); - if( rc==SQLITE_OK ){ - if( SQLITE_ROW==sqlite3_step(pSelect) ){ - int i; - for(i=1; i<=p->nColumn; i++){ - const char *zText = (const char *)sqlite3_column_text(pSelect, i); - rc = fts3PendingTermsAdd(p, zText, -1, &aSz[i-1]); - if( rc!=SQLITE_OK ){ - sqlite3_reset(pSelect); - *pRC = rc; - return; - } - aSz[p->nColumn] += sqlite3_column_bytes(pSelect, i); - } - } - rc = sqlite3_reset(pSelect); - }else{ - sqlite3_reset(pSelect); - } - *pRC = rc; -} - -/* -** Forward declaration to account for the circular dependency between -** functions fts3SegmentMerge() and fts3AllocateSegdirIdx(). -*/ -static int fts3SegmentMerge(Fts3Table *, int, int); - -/* -** This function allocates a new level iLevel index in the segdir table. -** Usually, indexes are allocated within a level sequentially starting -** with 0, so the allocated index is one greater than the value returned -** by: -** -** SELECT max(idx) FROM %_segdir WHERE level = :iLevel -** -** However, if there are already FTS3_MERGE_COUNT indexes at the requested -** level, they are merged into a single level (iLevel+1) segment and the -** allocated index is 0. -** -** If successful, *piIdx is set to the allocated index slot and SQLITE_OK -** returned. Otherwise, an SQLite error code is returned. -*/ -static int fts3AllocateSegdirIdx( - Fts3Table *p, - int iIndex, /* Index for p->aIndex */ - int iLevel, - int *piIdx -){ - int rc; /* Return Code */ - sqlite3_stmt *pNextIdx; /* Query for next idx at level iLevel */ - int iNext = 0; /* Result of query pNextIdx */ - - /* Set variable iNext to the next available segdir index at level iLevel. */ - rc = fts3SqlStmt(p, SQL_NEXT_SEGMENT_INDEX, &pNextIdx, 0); - if( rc==SQLITE_OK ){ - sqlite3_bind_int(pNextIdx, 1, iIndex*FTS3_SEGDIR_MAXLEVEL + iLevel); - if( SQLITE_ROW==sqlite3_step(pNextIdx) ){ - iNext = sqlite3_column_int(pNextIdx, 0); - } - rc = sqlite3_reset(pNextIdx); - } - - if( rc==SQLITE_OK ){ - /* If iNext is FTS3_MERGE_COUNT, indicating that level iLevel is already - ** full, merge all segments in level iLevel into a single iLevel+1 - ** segment and allocate (newly freed) index 0 at level iLevel. Otherwise, - ** if iNext is less than FTS3_MERGE_COUNT, allocate index iNext. - */ - if( iNext>=FTS3_MERGE_COUNT ){ - rc = fts3SegmentMerge(p, iIndex, iLevel); - *piIdx = 0; - }else{ - *piIdx = iNext; - } - } - - return rc; -} - -/* -** The %_segments table is declared as follows: -** -** CREATE TABLE %_segments(blockid INTEGER PRIMARY KEY, block BLOB) -** -** This function reads data from a single row of the %_segments table. The -** specific row is identified by the iBlockid parameter. If paBlob is not -** NULL, then a buffer is allocated using sqlite3_malloc() and populated -** with the contents of the blob stored in the "block" column of the -** identified table row is. Whether or not paBlob is NULL, *pnBlob is set -** to the size of the blob in bytes before returning. -** -** If an error occurs, or the table does not contain the specified row, -** an SQLite error code is returned. Otherwise, SQLITE_OK is returned. If -** paBlob is non-NULL, then it is the responsibility of the caller to -** eventually free the returned buffer. -** -** This function may leave an open sqlite3_blob* handle in the -** Fts3Table.pSegments variable. This handle is reused by subsequent calls -** to this function. The handle may be closed by calling the -** sqlite3Fts3SegmentsClose() function. Reusing a blob handle is a handy -** performance improvement, but the blob handle should always be closed -** before control is returned to the user (to prevent a lock being held -** on the database file for longer than necessary). Thus, any virtual table -** method (xFilter etc.) that may directly or indirectly call this function -** must call sqlite3Fts3SegmentsClose() before returning. -*/ -int sqlite3Fts3ReadBlock( - Fts3Table *p, /* FTS3 table handle */ - sqlite3_int64 iBlockid, /* Access the row with blockid=$iBlockid */ - char **paBlob, /* OUT: Blob data in malloc'd buffer */ - int *pnBlob, /* OUT: Size of blob data */ - int *pnLoad /* OUT: Bytes actually loaded */ -){ - int rc; /* Return code */ - - /* pnBlob must be non-NULL. paBlob may be NULL or non-NULL. */ - assert( pnBlob); - - if( p->pSegments ){ - rc = sqlite3_blob_reopen(p->pSegments, iBlockid); - }else{ - if( 0==p->zSegmentsTbl ){ - p->zSegmentsTbl = sqlite3_mprintf("%s_segments", p->zName); - if( 0==p->zSegmentsTbl ) return SQLITE_NOMEM; - } - rc = sqlite3_blob_open( - p->db, p->zDb, p->zSegmentsTbl, "block", iBlockid, 0, &p->pSegments - ); - } - - if( rc==SQLITE_OK ){ - int nByte = sqlite3_blob_bytes(p->pSegments); - *pnBlob = nByte; - if( paBlob ){ - char *aByte = sqlite3_malloc(nByte + FTS3_NODE_PADDING); - if( !aByte ){ - rc = SQLITE_NOMEM; - }else{ - if( pnLoad && nByte>(FTS3_NODE_CHUNK_THRESHOLD) ){ - nByte = FTS3_NODE_CHUNKSIZE; - *pnLoad = nByte; - } - rc = sqlite3_blob_read(p->pSegments, aByte, nByte, 0); - memset(&aByte[nByte], 0, FTS3_NODE_PADDING); - if( rc!=SQLITE_OK ){ - sqlite3_free(aByte); - aByte = 0; - } - } - *paBlob = aByte; - } - } - - return rc; -} - -/* -** Close the blob handle at p->pSegments, if it is open. See comments above -** the sqlite3Fts3ReadBlock() function for details. -*/ -void sqlite3Fts3SegmentsClose(Fts3Table *p){ - sqlite3_blob_close(p->pSegments); - p->pSegments = 0; -} - -static int fts3SegReaderIncrRead(Fts3SegReader *pReader){ - int nRead; /* Number of bytes to read */ - int rc; /* Return code */ - - nRead = MIN(pReader->nNode - pReader->nPopulate, FTS3_NODE_CHUNKSIZE); - rc = sqlite3_blob_read( - pReader->pBlob, - &pReader->aNode[pReader->nPopulate], - nRead, - pReader->nPopulate - ); - - if( rc==SQLITE_OK ){ - pReader->nPopulate += nRead; - memset(&pReader->aNode[pReader->nPopulate], 0, FTS3_NODE_PADDING); - if( pReader->nPopulate==pReader->nNode ){ - sqlite3_blob_close(pReader->pBlob); - pReader->pBlob = 0; - pReader->nPopulate = 0; - } - } - return rc; -} - -static int fts3SegReaderRequire(Fts3SegReader *pReader, char *pFrom, int nByte){ - int rc = SQLITE_OK; - assert( !pReader->pBlob - || (pFrom>=pReader->aNode && pFrom<&pReader->aNode[pReader->nNode]) - ); - while( pReader->pBlob && rc==SQLITE_OK - && (pFrom - pReader->aNode + nByte)>pReader->nPopulate - ){ - rc = fts3SegReaderIncrRead(pReader); - } - return rc; -} - -/* -** Move the iterator passed as the first argument to the next term in the -** segment. If successful, SQLITE_OK is returned. If there is no next term, -** SQLITE_DONE. Otherwise, an SQLite error code. -*/ -static int fts3SegReaderNext( - Fts3Table *p, - Fts3SegReader *pReader, - int bIncr -){ - int rc; /* Return code of various sub-routines */ - char *pNext; /* Cursor variable */ - int nPrefix; /* Number of bytes in term prefix */ - int nSuffix; /* Number of bytes in term suffix */ - - if( !pReader->aDoclist ){ - pNext = pReader->aNode; - }else{ - pNext = &pReader->aDoclist[pReader->nDoclist]; - } - - if( !pNext || pNext>=&pReader->aNode[pReader->nNode] ){ - - if( fts3SegReaderIsPending(pReader) ){ - Fts3HashElem *pElem = *(pReader->ppNextElem); - if( pElem==0 ){ - pReader->aNode = 0; - }else{ - PendingList *pList = (PendingList *)fts3HashData(pElem); - pReader->zTerm = (char *)fts3HashKey(pElem); - pReader->nTerm = fts3HashKeysize(pElem); - pReader->nNode = pReader->nDoclist = pList->nData + 1; - pReader->aNode = pReader->aDoclist = pList->aData; - pReader->ppNextElem++; - assert( pReader->aNode ); - } - return SQLITE_OK; - } - - if( !fts3SegReaderIsRootOnly(pReader) ){ - sqlite3_free(pReader->aNode); - sqlite3_blob_close(pReader->pBlob); - pReader->pBlob = 0; - } - pReader->aNode = 0; - - /* If iCurrentBlock>=iLeafEndBlock, this is an EOF condition. All leaf - ** blocks have already been traversed. */ - assert( pReader->iCurrentBlock<=pReader->iLeafEndBlock ); - if( pReader->iCurrentBlock>=pReader->iLeafEndBlock ){ - return SQLITE_OK; - } - - rc = sqlite3Fts3ReadBlock( - p, ++pReader->iCurrentBlock, &pReader->aNode, &pReader->nNode, - (bIncr ? &pReader->nPopulate : 0) - ); - if( rc!=SQLITE_OK ) return rc; - assert( pReader->pBlob==0 ); - if( bIncr && pReader->nPopulatenNode ){ - pReader->pBlob = p->pSegments; - p->pSegments = 0; - } - pNext = pReader->aNode; - } - - assert( !fts3SegReaderIsPending(pReader) ); - - rc = fts3SegReaderRequire(pReader, pNext, FTS3_VARINT_MAX*2); - if( rc!=SQLITE_OK ) return rc; - - /* Because of the FTS3_NODE_PADDING bytes of padding, the following is - ** safe (no risk of overread) even if the node data is corrupted. */ - pNext += sqlite3Fts3GetVarint32(pNext, &nPrefix); - pNext += sqlite3Fts3GetVarint32(pNext, &nSuffix); - if( nPrefix<0 || nSuffix<=0 - || &pNext[nSuffix]>&pReader->aNode[pReader->nNode] - ){ - return FTS_CORRUPT_VTAB; - } - - if( nPrefix+nSuffix>pReader->nTermAlloc ){ - int nNew = (nPrefix+nSuffix)*2; - char *zNew = sqlite3_realloc(pReader->zTerm, nNew); - if( !zNew ){ - return SQLITE_NOMEM; - } - pReader->zTerm = zNew; - pReader->nTermAlloc = nNew; - } - - rc = fts3SegReaderRequire(pReader, pNext, nSuffix+FTS3_VARINT_MAX); - if( rc!=SQLITE_OK ) return rc; - - memcpy(&pReader->zTerm[nPrefix], pNext, nSuffix); - pReader->nTerm = nPrefix+nSuffix; - pNext += nSuffix; - pNext += sqlite3Fts3GetVarint32(pNext, &pReader->nDoclist); - pReader->aDoclist = pNext; - pReader->pOffsetList = 0; - - /* Check that the doclist does not appear to extend past the end of the - ** b-tree node. And that the final byte of the doclist is 0x00. If either - ** of these statements is untrue, then the data structure is corrupt. - */ - if( &pReader->aDoclist[pReader->nDoclist]>&pReader->aNode[pReader->nNode] - || (pReader->nPopulate==0 && pReader->aDoclist[pReader->nDoclist-1]) - ){ - return FTS_CORRUPT_VTAB; - } - return SQLITE_OK; -} - -/* -** Set the SegReader to point to the first docid in the doclist associated -** with the current term. -*/ -static int fts3SegReaderFirstDocid(Fts3Table *pTab, Fts3SegReader *pReader){ - int rc = SQLITE_OK; - assert( pReader->aDoclist ); - assert( !pReader->pOffsetList ); - if( pTab->bDescIdx && fts3SegReaderIsPending(pReader) ){ - u8 bEof = 0; - pReader->iDocid = 0; - pReader->nOffsetList = 0; - sqlite3Fts3DoclistPrev(0, - pReader->aDoclist, pReader->nDoclist, &pReader->pOffsetList, - &pReader->iDocid, &pReader->nOffsetList, &bEof - ); - }else{ - rc = fts3SegReaderRequire(pReader, pReader->aDoclist, FTS3_VARINT_MAX); - if( rc==SQLITE_OK ){ - int n = sqlite3Fts3GetVarint(pReader->aDoclist, &pReader->iDocid); - pReader->pOffsetList = &pReader->aDoclist[n]; - } - } - return rc; -} - -/* -** Advance the SegReader to point to the next docid in the doclist -** associated with the current term. -** -** If arguments ppOffsetList and pnOffsetList are not NULL, then -** *ppOffsetList is set to point to the first column-offset list -** in the doclist entry (i.e. immediately past the docid varint). -** *pnOffsetList is set to the length of the set of column-offset -** lists, not including the nul-terminator byte. For example: -*/ -static int fts3SegReaderNextDocid( - Fts3Table *pTab, - Fts3SegReader *pReader, /* Reader to advance to next docid */ - char **ppOffsetList, /* OUT: Pointer to current position-list */ - int *pnOffsetList /* OUT: Length of *ppOffsetList in bytes */ -){ - int rc = SQLITE_OK; - char *p = pReader->pOffsetList; - char c = 0; - - assert( p ); - - if( pTab->bDescIdx && fts3SegReaderIsPending(pReader) ){ - /* A pending-terms seg-reader for an FTS4 table that uses order=desc. - ** Pending-terms doclists are always built up in ascending order, so - ** we have to iterate through them backwards here. */ - u8 bEof = 0; - if( ppOffsetList ){ - *ppOffsetList = pReader->pOffsetList; - *pnOffsetList = pReader->nOffsetList - 1; - } - sqlite3Fts3DoclistPrev(0, - pReader->aDoclist, pReader->nDoclist, &p, &pReader->iDocid, - &pReader->nOffsetList, &bEof - ); - if( bEof ){ - pReader->pOffsetList = 0; - }else{ - pReader->pOffsetList = p; - } - }else{ - char *pEnd = &pReader->aDoclist[pReader->nDoclist]; - - /* Pointer p currently points at the first byte of an offset list. The - ** following block advances it to point one byte past the end of - ** the same offset list. */ - while( 1 ){ - - /* The following line of code (and the "p++" below the while() loop) is - ** normally all that is required to move pointer p to the desired - ** position. The exception is if this node is being loaded from disk - ** incrementally and pointer "p" now points to the first byte passed - ** the populated part of pReader->aNode[]. - */ - while( *p | c ) c = *p++ & 0x80; - assert( *p==0 ); - - if( pReader->pBlob==0 || p<&pReader->aNode[pReader->nPopulate] ) break; - rc = fts3SegReaderIncrRead(pReader); - if( rc!=SQLITE_OK ) return rc; - } - p++; - - /* If required, populate the output variables with a pointer to and the - ** size of the previous offset-list. - */ - if( ppOffsetList ){ - *ppOffsetList = pReader->pOffsetList; - *pnOffsetList = (int)(p - pReader->pOffsetList - 1); - } - - while( p=pEnd ){ - pReader->pOffsetList = 0; - }else{ - rc = fts3SegReaderRequire(pReader, p, FTS3_VARINT_MAX); - if( rc==SQLITE_OK ){ - sqlite3_int64 iDelta; - pReader->pOffsetList = p + sqlite3Fts3GetVarint(p, &iDelta); - if( pTab->bDescIdx ){ - pReader->iDocid -= iDelta; - }else{ - pReader->iDocid += iDelta; - } - } - } - } - - return SQLITE_OK; -} - - -int sqlite3Fts3MsrOvfl( - Fts3Cursor *pCsr, - Fts3MultiSegReader *pMsr, - int *pnOvfl -){ - Fts3Table *p = (Fts3Table*)pCsr->base.pVtab; - int nOvfl = 0; - int ii; - int rc = SQLITE_OK; - int pgsz = p->nPgsz; - - assert( p->bHasStat ); - assert( pgsz>0 ); - - for(ii=0; rc==SQLITE_OK && iinSegment; ii++){ - Fts3SegReader *pReader = pMsr->apSegment[ii]; - if( !fts3SegReaderIsPending(pReader) - && !fts3SegReaderIsRootOnly(pReader) - ){ - sqlite3_int64 jj; - for(jj=pReader->iStartBlock; jj<=pReader->iLeafEndBlock; jj++){ - int nBlob; - rc = sqlite3Fts3ReadBlock(p, jj, 0, &nBlob, 0); - if( rc!=SQLITE_OK ) break; - if( (nBlob+35)>pgsz ){ - nOvfl += (nBlob + 34)/pgsz; - } - } - } - } - *pnOvfl = nOvfl; - return rc; -} - -/* -** Free all allocations associated with the iterator passed as the -** second argument. -*/ -void sqlite3Fts3SegReaderFree(Fts3SegReader *pReader){ - if( pReader && !fts3SegReaderIsPending(pReader) ){ - sqlite3_free(pReader->zTerm); - if( !fts3SegReaderIsRootOnly(pReader) ){ - sqlite3_free(pReader->aNode); - sqlite3_blob_close(pReader->pBlob); - } - } - sqlite3_free(pReader); -} - -/* -** Allocate a new SegReader object. -*/ -int sqlite3Fts3SegReaderNew( - int iAge, /* Segment "age". */ - sqlite3_int64 iStartLeaf, /* First leaf to traverse */ - sqlite3_int64 iEndLeaf, /* Final leaf to traverse */ - sqlite3_int64 iEndBlock, /* Final block of segment */ - const char *zRoot, /* Buffer containing root node */ - int nRoot, /* Size of buffer containing root node */ - Fts3SegReader **ppReader /* OUT: Allocated Fts3SegReader */ -){ - int rc = SQLITE_OK; /* Return code */ - Fts3SegReader *pReader; /* Newly allocated SegReader object */ - int nExtra = 0; /* Bytes to allocate segment root node */ - - assert( iStartLeaf<=iEndLeaf ); - if( iStartLeaf==0 ){ - nExtra = nRoot + FTS3_NODE_PADDING; - } - - pReader = (Fts3SegReader *)sqlite3_malloc(sizeof(Fts3SegReader) + nExtra); - if( !pReader ){ - return SQLITE_NOMEM; - } - memset(pReader, 0, sizeof(Fts3SegReader)); - pReader->iIdx = iAge; - pReader->iStartBlock = iStartLeaf; - pReader->iLeafEndBlock = iEndLeaf; - pReader->iEndBlock = iEndBlock; - - if( nExtra ){ - /* The entire segment is stored in the root node. */ - pReader->aNode = (char *)&pReader[1]; - pReader->nNode = nRoot; - memcpy(pReader->aNode, zRoot, nRoot); - memset(&pReader->aNode[nRoot], 0, FTS3_NODE_PADDING); - }else{ - pReader->iCurrentBlock = iStartLeaf-1; - } - - if( rc==SQLITE_OK ){ - *ppReader = pReader; - }else{ - sqlite3Fts3SegReaderFree(pReader); - } - return rc; -} - -/* -** This is a comparison function used as a qsort() callback when sorting -** an array of pending terms by term. This occurs as part of flushing -** the contents of the pending-terms hash table to the database. -*/ -static int fts3CompareElemByTerm(const void *lhs, const void *rhs){ - char *z1 = fts3HashKey(*(Fts3HashElem **)lhs); - char *z2 = fts3HashKey(*(Fts3HashElem **)rhs); - int n1 = fts3HashKeysize(*(Fts3HashElem **)lhs); - int n2 = fts3HashKeysize(*(Fts3HashElem **)rhs); - - int n = (n1aIndex */ - const char *zTerm, /* Term to search for */ - int nTerm, /* Size of buffer zTerm */ - int bPrefix, /* True for a prefix iterator */ - Fts3SegReader **ppReader /* OUT: SegReader for pending-terms */ -){ - Fts3SegReader *pReader = 0; /* Fts3SegReader object to return */ - Fts3HashElem **aElem = 0; /* Array of term hash entries to scan */ - int nElem = 0; /* Size of array at aElem */ - int rc = SQLITE_OK; /* Return Code */ - Fts3Hash *pHash; - - pHash = &p->aIndex[iIndex].hPending; - if( bPrefix ){ - int nAlloc = 0; /* Size of allocated array at aElem */ - Fts3HashElem *pE = 0; /* Iterator variable */ - - for(pE=fts3HashFirst(pHash); pE; pE=fts3HashNext(pE)){ - char *zKey = (char *)fts3HashKey(pE); - int nKey = fts3HashKeysize(pE); - if( nTerm==0 || (nKey>=nTerm && 0==memcmp(zKey, zTerm, nTerm)) ){ - if( nElem==nAlloc ){ - Fts3HashElem **aElem2; - nAlloc += 16; - aElem2 = (Fts3HashElem **)sqlite3_realloc( - aElem, nAlloc*sizeof(Fts3HashElem *) - ); - if( !aElem2 ){ - rc = SQLITE_NOMEM; - nElem = 0; - break; - } - aElem = aElem2; - } - - aElem[nElem++] = pE; - } - } - - /* If more than one term matches the prefix, sort the Fts3HashElem - ** objects in term order using qsort(). This uses the same comparison - ** callback as is used when flushing terms to disk. - */ - if( nElem>1 ){ - qsort(aElem, nElem, sizeof(Fts3HashElem *), fts3CompareElemByTerm); - } - - }else{ - /* The query is a simple term lookup that matches at most one term in - ** the index. All that is required is a straight hash-lookup. */ - Fts3HashElem *pE = fts3HashFindElem(pHash, zTerm, nTerm); - if( pE ){ - aElem = &pE; - nElem = 1; - } - } - - if( nElem>0 ){ - int nByte = sizeof(Fts3SegReader) + (nElem+1)*sizeof(Fts3HashElem *); - pReader = (Fts3SegReader *)sqlite3_malloc(nByte); - if( !pReader ){ - rc = SQLITE_NOMEM; - }else{ - memset(pReader, 0, nByte); - pReader->iIdx = 0x7FFFFFFF; - pReader->ppNextElem = (Fts3HashElem **)&pReader[1]; - memcpy(pReader->ppNextElem, aElem, nElem*sizeof(Fts3HashElem *)); - } - } - - if( bPrefix ){ - sqlite3_free(aElem); - } - *ppReader = pReader; - return rc; -} - -/* -** Compare the entries pointed to by two Fts3SegReader structures. -** Comparison is as follows: -** -** 1) EOF is greater than not EOF. -** -** 2) The current terms (if any) are compared using memcmp(). If one -** term is a prefix of another, the longer term is considered the -** larger. -** -** 3) By segment age. An older segment is considered larger. -*/ -static int fts3SegReaderCmp(Fts3SegReader *pLhs, Fts3SegReader *pRhs){ - int rc; - if( pLhs->aNode && pRhs->aNode ){ - int rc2 = pLhs->nTerm - pRhs->nTerm; - if( rc2<0 ){ - rc = memcmp(pLhs->zTerm, pRhs->zTerm, pLhs->nTerm); - }else{ - rc = memcmp(pLhs->zTerm, pRhs->zTerm, pRhs->nTerm); - } - if( rc==0 ){ - rc = rc2; - } - }else{ - rc = (pLhs->aNode==0) - (pRhs->aNode==0); - } - if( rc==0 ){ - rc = pRhs->iIdx - pLhs->iIdx; - } - assert( rc!=0 ); - return rc; -} - -/* -** A different comparison function for SegReader structures. In this -** version, it is assumed that each SegReader points to an entry in -** a doclist for identical terms. Comparison is made as follows: -** -** 1) EOF (end of doclist in this case) is greater than not EOF. -** -** 2) By current docid. -** -** 3) By segment age. An older segment is considered larger. -*/ -static int fts3SegReaderDoclistCmp(Fts3SegReader *pLhs, Fts3SegReader *pRhs){ - int rc = (pLhs->pOffsetList==0)-(pRhs->pOffsetList==0); - if( rc==0 ){ - if( pLhs->iDocid==pRhs->iDocid ){ - rc = pRhs->iIdx - pLhs->iIdx; - }else{ - rc = (pLhs->iDocid > pRhs->iDocid) ? 1 : -1; - } - } - assert( pLhs->aNode && pRhs->aNode ); - return rc; -} -static int fts3SegReaderDoclistCmpRev(Fts3SegReader *pLhs, Fts3SegReader *pRhs){ - int rc = (pLhs->pOffsetList==0)-(pRhs->pOffsetList==0); - if( rc==0 ){ - if( pLhs->iDocid==pRhs->iDocid ){ - rc = pRhs->iIdx - pLhs->iIdx; - }else{ - rc = (pLhs->iDocid < pRhs->iDocid) ? 1 : -1; - } - } - assert( pLhs->aNode && pRhs->aNode ); - return rc; -} - -/* -** Compare the term that the Fts3SegReader object passed as the first argument -** points to with the term specified by arguments zTerm and nTerm. -** -** If the pSeg iterator is already at EOF, return 0. Otherwise, return -** -ve if the pSeg term is less than zTerm/nTerm, 0 if the two terms are -** equal, or +ve if the pSeg term is greater than zTerm/nTerm. -*/ -static int fts3SegReaderTermCmp( - Fts3SegReader *pSeg, /* Segment reader object */ - const char *zTerm, /* Term to compare to */ - int nTerm /* Size of term zTerm in bytes */ -){ - int res = 0; - if( pSeg->aNode ){ - if( pSeg->nTerm>nTerm ){ - res = memcmp(pSeg->zTerm, zTerm, nTerm); - }else{ - res = memcmp(pSeg->zTerm, zTerm, pSeg->nTerm); - } - if( res==0 ){ - res = pSeg->nTerm-nTerm; - } - } - return res; -} - -/* -** Argument apSegment is an array of nSegment elements. It is known that -** the final (nSegment-nSuspect) members are already in sorted order -** (according to the comparison function provided). This function shuffles -** the array around until all entries are in sorted order. -*/ -static void fts3SegReaderSort( - Fts3SegReader **apSegment, /* Array to sort entries of */ - int nSegment, /* Size of apSegment array */ - int nSuspect, /* Unsorted entry count */ - int (*xCmp)(Fts3SegReader *, Fts3SegReader *) /* Comparison function */ -){ - int i; /* Iterator variable */ - - assert( nSuspect<=nSegment ); - - if( nSuspect==nSegment ) nSuspect--; - for(i=nSuspect-1; i>=0; i--){ - int j; - for(j=i; j<(nSegment-1); j++){ - Fts3SegReader *pTmp; - if( xCmp(apSegment[j], apSegment[j+1])<0 ) break; - pTmp = apSegment[j+1]; - apSegment[j+1] = apSegment[j]; - apSegment[j] = pTmp; - } - } - -#ifndef NDEBUG - /* Check that the list really is sorted now. */ - for(i=0; i<(nSuspect-1); i++){ - assert( xCmp(apSegment[i], apSegment[i+1])<0 ); - } -#endif -} - -/* -** Insert a record into the %_segments table. -*/ -static int fts3WriteSegment( - Fts3Table *p, /* Virtual table handle */ - sqlite3_int64 iBlock, /* Block id for new block */ - char *z, /* Pointer to buffer containing block data */ - int n /* Size of buffer z in bytes */ -){ - sqlite3_stmt *pStmt; - int rc = fts3SqlStmt(p, SQL_INSERT_SEGMENTS, &pStmt, 0); - if( rc==SQLITE_OK ){ - sqlite3_bind_int64(pStmt, 1, iBlock); - sqlite3_bind_blob(pStmt, 2, z, n, SQLITE_STATIC); - sqlite3_step(pStmt); - rc = sqlite3_reset(pStmt); - } - return rc; -} - -/* -** Insert a record into the %_segdir table. -*/ -static int fts3WriteSegdir( - Fts3Table *p, /* Virtual table handle */ - int iLevel, /* Value for "level" field */ - int iIdx, /* Value for "idx" field */ - sqlite3_int64 iStartBlock, /* Value for "start_block" field */ - sqlite3_int64 iLeafEndBlock, /* Value for "leaves_end_block" field */ - sqlite3_int64 iEndBlock, /* Value for "end_block" field */ - char *zRoot, /* Blob value for "root" field */ - int nRoot /* Number of bytes in buffer zRoot */ -){ - sqlite3_stmt *pStmt; - int rc = fts3SqlStmt(p, SQL_INSERT_SEGDIR, &pStmt, 0); - if( rc==SQLITE_OK ){ - sqlite3_bind_int(pStmt, 1, iLevel); - sqlite3_bind_int(pStmt, 2, iIdx); - sqlite3_bind_int64(pStmt, 3, iStartBlock); - sqlite3_bind_int64(pStmt, 4, iLeafEndBlock); - sqlite3_bind_int64(pStmt, 5, iEndBlock); - sqlite3_bind_blob(pStmt, 6, zRoot, nRoot, SQLITE_STATIC); - sqlite3_step(pStmt); - rc = sqlite3_reset(pStmt); - } - return rc; -} - -/* -** Return the size of the common prefix (if any) shared by zPrev and -** zNext, in bytes. For example, -** -** fts3PrefixCompress("abc", 3, "abcdef", 6) // returns 3 -** fts3PrefixCompress("abX", 3, "abcdef", 6) // returns 2 -** fts3PrefixCompress("abX", 3, "Xbcdef", 6) // returns 0 -*/ -static int fts3PrefixCompress( - const char *zPrev, /* Buffer containing previous term */ - int nPrev, /* Size of buffer zPrev in bytes */ - const char *zNext, /* Buffer containing next term */ - int nNext /* Size of buffer zNext in bytes */ -){ - int n; - UNUSED_PARAMETER(nNext); - for(n=0; nnData; /* Current size of node in bytes */ - int nReq = nData; /* Required space after adding zTerm */ - int nPrefix; /* Number of bytes of prefix compression */ - int nSuffix; /* Suffix length */ - - nPrefix = fts3PrefixCompress(pTree->zTerm, pTree->nTerm, zTerm, nTerm); - nSuffix = nTerm-nPrefix; - - nReq += sqlite3Fts3VarintLen(nPrefix)+sqlite3Fts3VarintLen(nSuffix)+nSuffix; - if( nReq<=p->nNodeSize || !pTree->zTerm ){ - - if( nReq>p->nNodeSize ){ - /* An unusual case: this is the first term to be added to the node - ** and the static node buffer (p->nNodeSize bytes) is not large - ** enough. Use a separately malloced buffer instead This wastes - ** p->nNodeSize bytes, but since this scenario only comes about when - ** the database contain two terms that share a prefix of almost 2KB, - ** this is not expected to be a serious problem. - */ - assert( pTree->aData==(char *)&pTree[1] ); - pTree->aData = (char *)sqlite3_malloc(nReq); - if( !pTree->aData ){ - return SQLITE_NOMEM; - } - } - - if( pTree->zTerm ){ - /* There is no prefix-length field for first term in a node */ - nData += sqlite3Fts3PutVarint(&pTree->aData[nData], nPrefix); - } - - nData += sqlite3Fts3PutVarint(&pTree->aData[nData], nSuffix); - memcpy(&pTree->aData[nData], &zTerm[nPrefix], nSuffix); - pTree->nData = nData + nSuffix; - pTree->nEntry++; - - if( isCopyTerm ){ - if( pTree->nMalloczMalloc, nTerm*2); - if( !zNew ){ - return SQLITE_NOMEM; - } - pTree->nMalloc = nTerm*2; - pTree->zMalloc = zNew; - } - pTree->zTerm = pTree->zMalloc; - memcpy(pTree->zTerm, zTerm, nTerm); - pTree->nTerm = nTerm; - }else{ - pTree->zTerm = (char *)zTerm; - pTree->nTerm = nTerm; - } - return SQLITE_OK; - } - } - - /* If control flows to here, it was not possible to append zTerm to the - ** current node. Create a new node (a right-sibling of the current node). - ** If this is the first node in the tree, the term is added to it. - ** - ** Otherwise, the term is not added to the new node, it is left empty for - ** now. Instead, the term is inserted into the parent of pTree. If pTree - ** has no parent, one is created here. - */ - pNew = (SegmentNode *)sqlite3_malloc(sizeof(SegmentNode) + p->nNodeSize); - if( !pNew ){ - return SQLITE_NOMEM; - } - memset(pNew, 0, sizeof(SegmentNode)); - pNew->nData = 1 + FTS3_VARINT_MAX; - pNew->aData = (char *)&pNew[1]; - - if( pTree ){ - SegmentNode *pParent = pTree->pParent; - rc = fts3NodeAddTerm(p, &pParent, isCopyTerm, zTerm, nTerm); - if( pTree->pParent==0 ){ - pTree->pParent = pParent; - } - pTree->pRight = pNew; - pNew->pLeftmost = pTree->pLeftmost; - pNew->pParent = pParent; - pNew->zMalloc = pTree->zMalloc; - pNew->nMalloc = pTree->nMalloc; - pTree->zMalloc = 0; - }else{ - pNew->pLeftmost = pNew; - rc = fts3NodeAddTerm(p, &pNew, isCopyTerm, zTerm, nTerm); - } - - *ppTree = pNew; - return rc; -} - -/* -** Helper function for fts3NodeWrite(). -*/ -static int fts3TreeFinishNode( - SegmentNode *pTree, - int iHeight, - sqlite3_int64 iLeftChild -){ - int nStart; - assert( iHeight>=1 && iHeight<128 ); - nStart = FTS3_VARINT_MAX - sqlite3Fts3VarintLen(iLeftChild); - pTree->aData[nStart] = (char)iHeight; - sqlite3Fts3PutVarint(&pTree->aData[nStart+1], iLeftChild); - return nStart; -} - -/* -** Write the buffer for the segment node pTree and all of its peers to the -** database. Then call this function recursively to write the parent of -** pTree and its peers to the database. -** -** Except, if pTree is a root node, do not write it to the database. Instead, -** set output variables *paRoot and *pnRoot to contain the root node. -** -** If successful, SQLITE_OK is returned and output variable *piLast is -** set to the largest blockid written to the database (or zero if no -** blocks were written to the db). Otherwise, an SQLite error code is -** returned. -*/ -static int fts3NodeWrite( - Fts3Table *p, /* Virtual table handle */ - SegmentNode *pTree, /* SegmentNode handle */ - int iHeight, /* Height of this node in tree */ - sqlite3_int64 iLeaf, /* Block id of first leaf node */ - sqlite3_int64 iFree, /* Block id of next free slot in %_segments */ - sqlite3_int64 *piLast, /* OUT: Block id of last entry written */ - char **paRoot, /* OUT: Data for root node */ - int *pnRoot /* OUT: Size of root node in bytes */ -){ - int rc = SQLITE_OK; - - if( !pTree->pParent ){ - /* Root node of the tree. */ - int nStart = fts3TreeFinishNode(pTree, iHeight, iLeaf); - *piLast = iFree-1; - *pnRoot = pTree->nData - nStart; - *paRoot = &pTree->aData[nStart]; - }else{ - SegmentNode *pIter; - sqlite3_int64 iNextFree = iFree; - sqlite3_int64 iNextLeaf = iLeaf; - for(pIter=pTree->pLeftmost; pIter && rc==SQLITE_OK; pIter=pIter->pRight){ - int nStart = fts3TreeFinishNode(pIter, iHeight, iNextLeaf); - int nWrite = pIter->nData - nStart; - - rc = fts3WriteSegment(p, iNextFree, &pIter->aData[nStart], nWrite); - iNextFree++; - iNextLeaf += (pIter->nEntry+1); - } - if( rc==SQLITE_OK ){ - assert( iNextLeaf==iFree ); - rc = fts3NodeWrite( - p, pTree->pParent, iHeight+1, iFree, iNextFree, piLast, paRoot, pnRoot - ); - } - } - - return rc; -} - -/* -** Free all memory allocations associated with the tree pTree. -*/ -static void fts3NodeFree(SegmentNode *pTree){ - if( pTree ){ - SegmentNode *p = pTree->pLeftmost; - fts3NodeFree(p->pParent); - while( p ){ - SegmentNode *pRight = p->pRight; - if( p->aData!=(char *)&p[1] ){ - sqlite3_free(p->aData); - } - assert( pRight==0 || p->zMalloc==0 ); - sqlite3_free(p->zMalloc); - sqlite3_free(p); - p = pRight; - } - } -} - -/* -** Add a term to the segment being constructed by the SegmentWriter object -** *ppWriter. When adding the first term to a segment, *ppWriter should -** be passed NULL. This function will allocate a new SegmentWriter object -** and return it via the input/output variable *ppWriter in this case. -** -** If successful, SQLITE_OK is returned. Otherwise, an SQLite error code. -*/ -static int fts3SegWriterAdd( - Fts3Table *p, /* Virtual table handle */ - SegmentWriter **ppWriter, /* IN/OUT: SegmentWriter handle */ - int isCopyTerm, /* True if buffer zTerm must be copied */ - const char *zTerm, /* Pointer to buffer containing term */ - int nTerm, /* Size of term in bytes */ - const char *aDoclist, /* Pointer to buffer containing doclist */ - int nDoclist /* Size of doclist in bytes */ -){ - int nPrefix; /* Size of term prefix in bytes */ - int nSuffix; /* Size of term suffix in bytes */ - int nReq; /* Number of bytes required on leaf page */ - int nData; - SegmentWriter *pWriter = *ppWriter; - - if( !pWriter ){ - int rc; - sqlite3_stmt *pStmt; - - /* Allocate the SegmentWriter structure */ - pWriter = (SegmentWriter *)sqlite3_malloc(sizeof(SegmentWriter)); - if( !pWriter ) return SQLITE_NOMEM; - memset(pWriter, 0, sizeof(SegmentWriter)); - *ppWriter = pWriter; - - /* Allocate a buffer in which to accumulate data */ - pWriter->aData = (char *)sqlite3_malloc(p->nNodeSize); - if( !pWriter->aData ) return SQLITE_NOMEM; - pWriter->nSize = p->nNodeSize; - - /* Find the next free blockid in the %_segments table */ - rc = fts3SqlStmt(p, SQL_NEXT_SEGMENTS_ID, &pStmt, 0); - if( rc!=SQLITE_OK ) return rc; - if( SQLITE_ROW==sqlite3_step(pStmt) ){ - pWriter->iFree = sqlite3_column_int64(pStmt, 0); - pWriter->iFirst = pWriter->iFree; - } - rc = sqlite3_reset(pStmt); - if( rc!=SQLITE_OK ) return rc; - } - nData = pWriter->nData; - - nPrefix = fts3PrefixCompress(pWriter->zTerm, pWriter->nTerm, zTerm, nTerm); - nSuffix = nTerm-nPrefix; - - /* Figure out how many bytes are required by this new entry */ - nReq = sqlite3Fts3VarintLen(nPrefix) + /* varint containing prefix size */ - sqlite3Fts3VarintLen(nSuffix) + /* varint containing suffix size */ - nSuffix + /* Term suffix */ - sqlite3Fts3VarintLen(nDoclist) + /* Size of doclist */ - nDoclist; /* Doclist data */ - - if( nData>0 && nData+nReq>p->nNodeSize ){ - int rc; - - /* The current leaf node is full. Write it out to the database. */ - rc = fts3WriteSegment(p, pWriter->iFree++, pWriter->aData, nData); - if( rc!=SQLITE_OK ) return rc; - - /* Add the current term to the interior node tree. The term added to - ** the interior tree must: - ** - ** a) be greater than the largest term on the leaf node just written - ** to the database (still available in pWriter->zTerm), and - ** - ** b) be less than or equal to the term about to be added to the new - ** leaf node (zTerm/nTerm). - ** - ** In other words, it must be the prefix of zTerm 1 byte longer than - ** the common prefix (if any) of zTerm and pWriter->zTerm. - */ - assert( nPrefixpTree, isCopyTerm, zTerm, nPrefix+1); - if( rc!=SQLITE_OK ) return rc; - - nData = 0; - pWriter->nTerm = 0; - - nPrefix = 0; - nSuffix = nTerm; - nReq = 1 + /* varint containing prefix size */ - sqlite3Fts3VarintLen(nTerm) + /* varint containing suffix size */ - nTerm + /* Term suffix */ - sqlite3Fts3VarintLen(nDoclist) + /* Size of doclist */ - nDoclist; /* Doclist data */ - } - - /* If the buffer currently allocated is too small for this entry, realloc - ** the buffer to make it large enough. - */ - if( nReq>pWriter->nSize ){ - char *aNew = sqlite3_realloc(pWriter->aData, nReq); - if( !aNew ) return SQLITE_NOMEM; - pWriter->aData = aNew; - pWriter->nSize = nReq; - } - assert( nData+nReq<=pWriter->nSize ); - - /* Append the prefix-compressed term and doclist to the buffer. */ - nData += sqlite3Fts3PutVarint(&pWriter->aData[nData], nPrefix); - nData += sqlite3Fts3PutVarint(&pWriter->aData[nData], nSuffix); - memcpy(&pWriter->aData[nData], &zTerm[nPrefix], nSuffix); - nData += nSuffix; - nData += sqlite3Fts3PutVarint(&pWriter->aData[nData], nDoclist); - memcpy(&pWriter->aData[nData], aDoclist, nDoclist); - pWriter->nData = nData + nDoclist; - - /* Save the current term so that it can be used to prefix-compress the next. - ** If the isCopyTerm parameter is true, then the buffer pointed to by - ** zTerm is transient, so take a copy of the term data. Otherwise, just - ** store a copy of the pointer. - */ - if( isCopyTerm ){ - if( nTerm>pWriter->nMalloc ){ - char *zNew = sqlite3_realloc(pWriter->zMalloc, nTerm*2); - if( !zNew ){ - return SQLITE_NOMEM; - } - pWriter->nMalloc = nTerm*2; - pWriter->zMalloc = zNew; - pWriter->zTerm = zNew; - } - assert( pWriter->zTerm==pWriter->zMalloc ); - memcpy(pWriter->zTerm, zTerm, nTerm); - }else{ - pWriter->zTerm = (char *)zTerm; - } - pWriter->nTerm = nTerm; - - return SQLITE_OK; -} - -/* -** Flush all data associated with the SegmentWriter object pWriter to the -** database. This function must be called after all terms have been added -** to the segment using fts3SegWriterAdd(). If successful, SQLITE_OK is -** returned. Otherwise, an SQLite error code. -*/ -static int fts3SegWriterFlush( - Fts3Table *p, /* Virtual table handle */ - SegmentWriter *pWriter, /* SegmentWriter to flush to the db */ - int iLevel, /* Value for 'level' column of %_segdir */ - int iIdx /* Value for 'idx' column of %_segdir */ -){ - int rc; /* Return code */ - if( pWriter->pTree ){ - sqlite3_int64 iLast = 0; /* Largest block id written to database */ - sqlite3_int64 iLastLeaf; /* Largest leaf block id written to db */ - char *zRoot = NULL; /* Pointer to buffer containing root node */ - int nRoot = 0; /* Size of buffer zRoot */ - - iLastLeaf = pWriter->iFree; - rc = fts3WriteSegment(p, pWriter->iFree++, pWriter->aData, pWriter->nData); - if( rc==SQLITE_OK ){ - rc = fts3NodeWrite(p, pWriter->pTree, 1, - pWriter->iFirst, pWriter->iFree, &iLast, &zRoot, &nRoot); - } - if( rc==SQLITE_OK ){ - rc = fts3WriteSegdir( - p, iLevel, iIdx, pWriter->iFirst, iLastLeaf, iLast, zRoot, nRoot); - } - }else{ - /* The entire tree fits on the root node. Write it to the segdir table. */ - rc = fts3WriteSegdir( - p, iLevel, iIdx, 0, 0, 0, pWriter->aData, pWriter->nData); - } - return rc; -} - -/* -** Release all memory held by the SegmentWriter object passed as the -** first argument. -*/ -static void fts3SegWriterFree(SegmentWriter *pWriter){ - if( pWriter ){ - sqlite3_free(pWriter->aData); - sqlite3_free(pWriter->zMalloc); - fts3NodeFree(pWriter->pTree); - sqlite3_free(pWriter); - } -} - -/* -** The first value in the apVal[] array is assumed to contain an integer. -** This function tests if there exist any documents with docid values that -** are different from that integer. i.e. if deleting the document with docid -** pRowid would mean the FTS3 table were empty. -** -** If successful, *pisEmpty is set to true if the table is empty except for -** document pRowid, or false otherwise, and SQLITE_OK is returned. If an -** error occurs, an SQLite error code is returned. -*/ -static int fts3IsEmpty(Fts3Table *p, sqlite3_value *pRowid, int *pisEmpty){ - sqlite3_stmt *pStmt; - int rc; - if( p->zContentTbl ){ - /* If using the content=xxx option, assume the table is never empty */ - *pisEmpty = 0; - rc = SQLITE_OK; - }else{ - rc = fts3SqlStmt(p, SQL_IS_EMPTY, &pStmt, &pRowid); - if( rc==SQLITE_OK ){ - if( SQLITE_ROW==sqlite3_step(pStmt) ){ - *pisEmpty = sqlite3_column_int(pStmt, 0); - } - rc = sqlite3_reset(pStmt); - } - } - return rc; -} - -/* -** Set *pnMax to the largest segment level in the database for the index -** iIndex. -** -** Segment levels are stored in the 'level' column of the %_segdir table. -** -** Return SQLITE_OK if successful, or an SQLite error code if not. -*/ -static int fts3SegmentMaxLevel(Fts3Table *p, int iIndex, int *pnMax){ - sqlite3_stmt *pStmt; - int rc; - assert( iIndex>=0 && iIndexnIndex ); - - /* Set pStmt to the compiled version of: - ** - ** SELECT max(level) FROM %Q.'%q_segdir' WHERE level BETWEEN ? AND ? - ** - ** (1024 is actually the value of macro FTS3_SEGDIR_PREFIXLEVEL_STR). - */ - rc = fts3SqlStmt(p, SQL_SELECT_SEGDIR_MAX_LEVEL, &pStmt, 0); - if( rc!=SQLITE_OK ) return rc; - sqlite3_bind_int(pStmt, 1, iIndex*FTS3_SEGDIR_MAXLEVEL); - sqlite3_bind_int(pStmt, 2, (iIndex+1)*FTS3_SEGDIR_MAXLEVEL - 1); - if( SQLITE_ROW==sqlite3_step(pStmt) ){ - *pnMax = sqlite3_column_int(pStmt, 0); - } - return sqlite3_reset(pStmt); -} - -/* -** This function is used after merging multiple segments into a single large -** segment to delete the old, now redundant, segment b-trees. Specifically, -** it: -** -** 1) Deletes all %_segments entries for the segments associated with -** each of the SegReader objects in the array passed as the third -** argument, and -** -** 2) deletes all %_segdir entries with level iLevel, or all %_segdir -** entries regardless of level if (iLevel<0). -** -** SQLITE_OK is returned if successful, otherwise an SQLite error code. -*/ -static int fts3DeleteSegdir( - Fts3Table *p, /* Virtual table handle */ - int iIndex, /* Index for p->aIndex */ - int iLevel, /* Level of %_segdir entries to delete */ - Fts3SegReader **apSegment, /* Array of SegReader objects */ - int nReader /* Size of array apSegment */ -){ - int rc; /* Return Code */ - int i; /* Iterator variable */ - sqlite3_stmt *pDelete; /* SQL statement to delete rows */ - - rc = fts3SqlStmt(p, SQL_DELETE_SEGMENTS_RANGE, &pDelete, 0); - for(i=0; rc==SQLITE_OK && iiStartBlock ){ - sqlite3_bind_int64(pDelete, 1, pSegment->iStartBlock); - sqlite3_bind_int64(pDelete, 2, pSegment->iEndBlock); - sqlite3_step(pDelete); - rc = sqlite3_reset(pDelete); - } - } - if( rc!=SQLITE_OK ){ - return rc; - } - - assert( iLevel>=0 || iLevel==FTS3_SEGCURSOR_ALL ); - if( iLevel==FTS3_SEGCURSOR_ALL ){ - rc = fts3SqlStmt(p, SQL_DELETE_SEGDIR_RANGE, &pDelete, 0); - if( rc==SQLITE_OK ){ - sqlite3_bind_int(pDelete, 1, iIndex*FTS3_SEGDIR_MAXLEVEL); - sqlite3_bind_int(pDelete, 2, (iIndex+1) * FTS3_SEGDIR_MAXLEVEL - 1); - } - }else{ - rc = fts3SqlStmt(p, SQL_DELETE_SEGDIR_LEVEL, &pDelete, 0); - if( rc==SQLITE_OK ){ - sqlite3_bind_int(pDelete, 1, iIndex*FTS3_SEGDIR_MAXLEVEL + iLevel); - } - } - - if( rc==SQLITE_OK ){ - sqlite3_step(pDelete); - rc = sqlite3_reset(pDelete); - } - - return rc; -} - -/* -** When this function is called, buffer *ppList (size *pnList bytes) contains -** a position list that may (or may not) feature multiple columns. This -** function adjusts the pointer *ppList and the length *pnList so that they -** identify the subset of the position list that corresponds to column iCol. -** -** If there are no entries in the input position list for column iCol, then -** *pnList is set to zero before returning. -*/ -static void fts3ColumnFilter( - int iCol, /* Column to filter on */ - char **ppList, /* IN/OUT: Pointer to position list */ - int *pnList /* IN/OUT: Size of buffer *ppList in bytes */ -){ - char *pList = *ppList; - int nList = *pnList; - char *pEnd = &pList[nList]; - int iCurrent = 0; - char *p = pList; - - assert( iCol>=0 ); - while( 1 ){ - char c = 0; - while( ppMsr->nBuffer ){ - char *pNew; - pMsr->nBuffer = nList*2; - pNew = (char *)sqlite3_realloc(pMsr->aBuffer, pMsr->nBuffer); - if( !pNew ) return SQLITE_NOMEM; - pMsr->aBuffer = pNew; - } - - memcpy(pMsr->aBuffer, pList, nList); - return SQLITE_OK; -} - -int sqlite3Fts3MsrIncrNext( - Fts3Table *p, /* Virtual table handle */ - Fts3MultiSegReader *pMsr, /* Multi-segment-reader handle */ - sqlite3_int64 *piDocid, /* OUT: Docid value */ - char **paPoslist, /* OUT: Pointer to position list */ - int *pnPoslist /* OUT: Size of position list in bytes */ -){ - int nMerge = pMsr->nAdvance; - Fts3SegReader **apSegment = pMsr->apSegment; - int (*xCmp)(Fts3SegReader *, Fts3SegReader *) = ( - p->bDescIdx ? fts3SegReaderDoclistCmpRev : fts3SegReaderDoclistCmp - ); - - if( nMerge==0 ){ - *paPoslist = 0; - return SQLITE_OK; - } - - while( 1 ){ - Fts3SegReader *pSeg; - pSeg = pMsr->apSegment[0]; - - if( pSeg->pOffsetList==0 ){ - *paPoslist = 0; - break; - }else{ - int rc; - char *pList; - int nList; - int j; - sqlite3_int64 iDocid = apSegment[0]->iDocid; - - rc = fts3SegReaderNextDocid(p, apSegment[0], &pList, &nList); - j = 1; - while( rc==SQLITE_OK - && jpOffsetList - && apSegment[j]->iDocid==iDocid - ){ - rc = fts3SegReaderNextDocid(p, apSegment[j], 0, 0); - j++; - } - if( rc!=SQLITE_OK ) return rc; - fts3SegReaderSort(pMsr->apSegment, nMerge, j, xCmp); - - if( pMsr->iColFilter>=0 ){ - fts3ColumnFilter(pMsr->iColFilter, &pList, &nList); - } - - if( nList>0 ){ - if( fts3SegReaderIsPending(apSegment[0]) ){ - rc = fts3MsrBufferData(pMsr, pList, nList+1); - if( rc!=SQLITE_OK ) return rc; - *paPoslist = pMsr->aBuffer; - assert( (pMsr->aBuffer[nList] & 0xFE)==0x00 ); - }else{ - *paPoslist = pList; - } - *piDocid = iDocid; - *pnPoslist = nList; - break; - } - } - } - - return SQLITE_OK; -} - -static int fts3SegReaderStart( - Fts3Table *p, /* Virtual table handle */ - Fts3MultiSegReader *pCsr, /* Cursor object */ - const char *zTerm, /* Term searched for (or NULL) */ - int nTerm /* Length of zTerm in bytes */ -){ - int i; - int nSeg = pCsr->nSegment; - - /* If the Fts3SegFilter defines a specific term (or term prefix) to search - ** for, then advance each segment iterator until it points to a term of - ** equal or greater value than the specified term. This prevents many - ** unnecessary merge/sort operations for the case where single segment - ** b-tree leaf nodes contain more than one term. - */ - for(i=0; pCsr->bRestart==0 && inSegment; i++){ - Fts3SegReader *pSeg = pCsr->apSegment[i]; - do { - int rc = fts3SegReaderNext(p, pSeg, 0); - if( rc!=SQLITE_OK ) return rc; - }while( zTerm && fts3SegReaderTermCmp(pSeg, zTerm, nTerm)<0 ); - } - fts3SegReaderSort(pCsr->apSegment, nSeg, nSeg, fts3SegReaderCmp); - - return SQLITE_OK; -} - -int sqlite3Fts3SegReaderStart( - Fts3Table *p, /* Virtual table handle */ - Fts3MultiSegReader *pCsr, /* Cursor object */ - Fts3SegFilter *pFilter /* Restrictions on range of iteration */ -){ - pCsr->pFilter = pFilter; - return fts3SegReaderStart(p, pCsr, pFilter->zTerm, pFilter->nTerm); -} - -int sqlite3Fts3MsrIncrStart( - Fts3Table *p, /* Virtual table handle */ - Fts3MultiSegReader *pCsr, /* Cursor object */ - int iCol, /* Column to match on. */ - const char *zTerm, /* Term to iterate through a doclist for */ - int nTerm /* Number of bytes in zTerm */ -){ - int i; - int rc; - int nSegment = pCsr->nSegment; - int (*xCmp)(Fts3SegReader *, Fts3SegReader *) = ( - p->bDescIdx ? fts3SegReaderDoclistCmpRev : fts3SegReaderDoclistCmp - ); - - assert( pCsr->pFilter==0 ); - assert( zTerm && nTerm>0 ); - - /* Advance each segment iterator until it points to the term zTerm/nTerm. */ - rc = fts3SegReaderStart(p, pCsr, zTerm, nTerm); - if( rc!=SQLITE_OK ) return rc; - - /* Determine how many of the segments actually point to zTerm/nTerm. */ - for(i=0; iapSegment[i]; - if( !pSeg->aNode || fts3SegReaderTermCmp(pSeg, zTerm, nTerm) ){ - break; - } - } - pCsr->nAdvance = i; - - /* Advance each of the segments to point to the first docid. */ - for(i=0; inAdvance; i++){ - rc = fts3SegReaderFirstDocid(p, pCsr->apSegment[i]); - if( rc!=SQLITE_OK ) return rc; - } - fts3SegReaderSort(pCsr->apSegment, i, i, xCmp); - - assert( iCol<0 || iColnColumn ); - pCsr->iColFilter = iCol; - - return SQLITE_OK; -} - -/* -** This function is called on a MultiSegReader that has been started using -** sqlite3Fts3MsrIncrStart(). One or more calls to MsrIncrNext() may also -** have been made. Calling this function puts the MultiSegReader in such -** a state that if the next two calls are: -** -** sqlite3Fts3SegReaderStart() -** sqlite3Fts3SegReaderStep() -** -** then the entire doclist for the term is available in -** MultiSegReader.aDoclist/nDoclist. -*/ -int sqlite3Fts3MsrIncrRestart(Fts3MultiSegReader *pCsr){ - int i; /* Used to iterate through segment-readers */ - - assert( pCsr->zTerm==0 ); - assert( pCsr->nTerm==0 ); - assert( pCsr->aDoclist==0 ); - assert( pCsr->nDoclist==0 ); - - pCsr->nAdvance = 0; - pCsr->bRestart = 1; - for(i=0; inSegment; i++){ - pCsr->apSegment[i]->pOffsetList = 0; - pCsr->apSegment[i]->nOffsetList = 0; - pCsr->apSegment[i]->iDocid = 0; - } - - return SQLITE_OK; -} - - -int sqlite3Fts3SegReaderStep( - Fts3Table *p, /* Virtual table handle */ - Fts3MultiSegReader *pCsr /* Cursor object */ -){ - int rc = SQLITE_OK; - - int isIgnoreEmpty = (pCsr->pFilter->flags & FTS3_SEGMENT_IGNORE_EMPTY); - int isRequirePos = (pCsr->pFilter->flags & FTS3_SEGMENT_REQUIRE_POS); - int isColFilter = (pCsr->pFilter->flags & FTS3_SEGMENT_COLUMN_FILTER); - int isPrefix = (pCsr->pFilter->flags & FTS3_SEGMENT_PREFIX); - int isScan = (pCsr->pFilter->flags & FTS3_SEGMENT_SCAN); - int isFirst = (pCsr->pFilter->flags & FTS3_SEGMENT_FIRST); - - Fts3SegReader **apSegment = pCsr->apSegment; - int nSegment = pCsr->nSegment; - Fts3SegFilter *pFilter = pCsr->pFilter; - int (*xCmp)(Fts3SegReader *, Fts3SegReader *) = ( - p->bDescIdx ? fts3SegReaderDoclistCmpRev : fts3SegReaderDoclistCmp - ); - - if( pCsr->nSegment==0 ) return SQLITE_OK; - - do { - int nMerge; - int i; - - /* Advance the first pCsr->nAdvance entries in the apSegment[] array - ** forward. Then sort the list in order of current term again. - */ - for(i=0; inAdvance; i++){ - rc = fts3SegReaderNext(p, apSegment[i], 0); - if( rc!=SQLITE_OK ) return rc; - } - fts3SegReaderSort(apSegment, nSegment, pCsr->nAdvance, fts3SegReaderCmp); - pCsr->nAdvance = 0; - - /* If all the seg-readers are at EOF, we're finished. return SQLITE_OK. */ - assert( rc==SQLITE_OK ); - if( apSegment[0]->aNode==0 ) break; - - pCsr->nTerm = apSegment[0]->nTerm; - pCsr->zTerm = apSegment[0]->zTerm; - - /* If this is a prefix-search, and if the term that apSegment[0] points - ** to does not share a suffix with pFilter->zTerm/nTerm, then all - ** required callbacks have been made. In this case exit early. - ** - ** Similarly, if this is a search for an exact match, and the first term - ** of segment apSegment[0] is not a match, exit early. - */ - if( pFilter->zTerm && !isScan ){ - if( pCsr->nTermnTerm - || (!isPrefix && pCsr->nTerm>pFilter->nTerm) - || memcmp(pCsr->zTerm, pFilter->zTerm, pFilter->nTerm) - ){ - break; - } - } - - nMerge = 1; - while( nMergeaNode - && apSegment[nMerge]->nTerm==pCsr->nTerm - && 0==memcmp(pCsr->zTerm, apSegment[nMerge]->zTerm, pCsr->nTerm) - ){ - nMerge++; - } - - assert( isIgnoreEmpty || (isRequirePos && !isColFilter) ); - if( nMerge==1 - && !isIgnoreEmpty - && !isFirst - && (p->bDescIdx==0 || fts3SegReaderIsPending(apSegment[0])==0) - ){ - pCsr->nDoclist = apSegment[0]->nDoclist; - if( fts3SegReaderIsPending(apSegment[0]) ){ - rc = fts3MsrBufferData(pCsr, apSegment[0]->aDoclist, pCsr->nDoclist); - pCsr->aDoclist = pCsr->aBuffer; - }else{ - pCsr->aDoclist = apSegment[0]->aDoclist; - } - if( rc==SQLITE_OK ) rc = SQLITE_ROW; - }else{ - int nDoclist = 0; /* Size of doclist */ - sqlite3_int64 iPrev = 0; /* Previous docid stored in doclist */ - - /* The current term of the first nMerge entries in the array - ** of Fts3SegReader objects is the same. The doclists must be merged - ** and a single term returned with the merged doclist. - */ - for(i=0; ipOffsetList ){ - int j; /* Number of segments that share a docid */ - char *pList; - int nList; - int nByte; - sqlite3_int64 iDocid = apSegment[0]->iDocid; - fts3SegReaderNextDocid(p, apSegment[0], &pList, &nList); - j = 1; - while( jpOffsetList - && apSegment[j]->iDocid==iDocid - ){ - fts3SegReaderNextDocid(p, apSegment[j], 0, 0); - j++; - } - - if( isColFilter ){ - fts3ColumnFilter(pFilter->iCol, &pList, &nList); - } - - if( !isIgnoreEmpty || nList>0 ){ - - /* Calculate the 'docid' delta value to write into the merged - ** doclist. */ - sqlite3_int64 iDelta; - if( p->bDescIdx && nDoclist>0 ){ - iDelta = iPrev - iDocid; - }else{ - iDelta = iDocid - iPrev; - } - assert( iDelta>0 || (nDoclist==0 && iDelta==iDocid) ); - assert( nDoclist>0 || iDelta==iDocid ); - - nByte = sqlite3Fts3VarintLen(iDelta) + (isRequirePos?nList+1:0); - if( nDoclist+nByte>pCsr->nBuffer ){ - char *aNew; - pCsr->nBuffer = (nDoclist+nByte)*2; - aNew = sqlite3_realloc(pCsr->aBuffer, pCsr->nBuffer); - if( !aNew ){ - return SQLITE_NOMEM; - } - pCsr->aBuffer = aNew; - } - - if( isFirst ){ - char *a = &pCsr->aBuffer[nDoclist]; - int nWrite; - - nWrite = sqlite3Fts3FirstFilter(iDelta, pList, nList, a); - if( nWrite ){ - iPrev = iDocid; - nDoclist += nWrite; - } - }else{ - nDoclist += sqlite3Fts3PutVarint(&pCsr->aBuffer[nDoclist], iDelta); - iPrev = iDocid; - if( isRequirePos ){ - memcpy(&pCsr->aBuffer[nDoclist], pList, nList); - nDoclist += nList; - pCsr->aBuffer[nDoclist++] = '\0'; - } - } - } - - fts3SegReaderSort(apSegment, nMerge, j, xCmp); - } - if( nDoclist>0 ){ - pCsr->aDoclist = pCsr->aBuffer; - pCsr->nDoclist = nDoclist; - rc = SQLITE_ROW; - } - } - pCsr->nAdvance = nMerge; - }while( rc==SQLITE_OK ); - - return rc; -} - - -void sqlite3Fts3SegReaderFinish( - Fts3MultiSegReader *pCsr /* Cursor object */ -){ - if( pCsr ){ - int i; - for(i=0; inSegment; i++){ - sqlite3Fts3SegReaderFree(pCsr->apSegment[i]); - } - sqlite3_free(pCsr->apSegment); - sqlite3_free(pCsr->aBuffer); - - pCsr->nSegment = 0; - pCsr->apSegment = 0; - pCsr->aBuffer = 0; - } -} - -/* -** Merge all level iLevel segments in the database into a single -** iLevel+1 segment. Or, if iLevel<0, merge all segments into a -** single segment with a level equal to the numerically largest level -** currently present in the database. -** -** If this function is called with iLevel<0, but there is only one -** segment in the database, SQLITE_DONE is returned immediately. -** Otherwise, if successful, SQLITE_OK is returned. If an error occurs, -** an SQLite error code is returned. -*/ -static int fts3SegmentMerge(Fts3Table *p, int iIndex, int iLevel){ - int rc; /* Return code */ - int iIdx = 0; /* Index of new segment */ - int iNewLevel = 0; /* Level/index to create new segment at */ - SegmentWriter *pWriter = 0; /* Used to write the new, merged, segment */ - Fts3SegFilter filter; /* Segment term filter condition */ - Fts3MultiSegReader csr; /* Cursor to iterate through level(s) */ - int bIgnoreEmpty = 0; /* True to ignore empty segments */ - - assert( iLevel==FTS3_SEGCURSOR_ALL - || iLevel==FTS3_SEGCURSOR_PENDING - || iLevel>=0 - ); - assert( iLevel=0 && iIndexnIndex ); - - rc = sqlite3Fts3SegReaderCursor(p, iIndex, iLevel, 0, 0, 1, 0, &csr); - if( rc!=SQLITE_OK || csr.nSegment==0 ) goto finished; - - if( iLevel==FTS3_SEGCURSOR_ALL ){ - /* This call is to merge all segments in the database to a single - ** segment. The level of the new segment is equal to the the numerically - ** greatest segment level currently present in the database for this - ** index. The idx of the new segment is always 0. */ - if( csr.nSegment==1 ){ - rc = SQLITE_DONE; - goto finished; - } - rc = fts3SegmentMaxLevel(p, iIndex, &iNewLevel); - bIgnoreEmpty = 1; - - }else if( iLevel==FTS3_SEGCURSOR_PENDING ){ - iNewLevel = iIndex * FTS3_SEGDIR_MAXLEVEL; - rc = fts3AllocateSegdirIdx(p, iIndex, 0, &iIdx); - }else{ - /* This call is to merge all segments at level iLevel. find the next - ** available segment index at level iLevel+1. The call to - ** fts3AllocateSegdirIdx() will merge the segments at level iLevel+1 to - ** a single iLevel+2 segment if necessary. */ - rc = fts3AllocateSegdirIdx(p, iIndex, iLevel+1, &iIdx); - iNewLevel = iIndex * FTS3_SEGDIR_MAXLEVEL + iLevel+1; - } - if( rc!=SQLITE_OK ) goto finished; - assert( csr.nSegment>0 ); - assert( iNewLevel>=(iIndex*FTS3_SEGDIR_MAXLEVEL) ); - assert( iNewLevel<((iIndex+1)*FTS3_SEGDIR_MAXLEVEL) ); - - memset(&filter, 0, sizeof(Fts3SegFilter)); - filter.flags = FTS3_SEGMENT_REQUIRE_POS; - filter.flags |= (bIgnoreEmpty ? FTS3_SEGMENT_IGNORE_EMPTY : 0); - - rc = sqlite3Fts3SegReaderStart(p, &csr, &filter); - while( SQLITE_OK==rc ){ - rc = sqlite3Fts3SegReaderStep(p, &csr); - if( rc!=SQLITE_ROW ) break; - rc = fts3SegWriterAdd(p, &pWriter, 1, - csr.zTerm, csr.nTerm, csr.aDoclist, csr.nDoclist); - } - if( rc!=SQLITE_OK ) goto finished; - assert( pWriter ); - - if( iLevel!=FTS3_SEGCURSOR_PENDING ){ - rc = fts3DeleteSegdir(p, iIndex, iLevel, csr.apSegment, csr.nSegment); - if( rc!=SQLITE_OK ) goto finished; - } - rc = fts3SegWriterFlush(p, pWriter, iNewLevel, iIdx); - - finished: - fts3SegWriterFree(pWriter); - sqlite3Fts3SegReaderFinish(&csr); - return rc; -} - - -/* -** Flush the contents of pendingTerms to level 0 segments. -*/ -int sqlite3Fts3PendingTermsFlush(Fts3Table *p){ - int rc = SQLITE_OK; - int i; - for(i=0; rc==SQLITE_OK && inIndex; i++){ - rc = fts3SegmentMerge(p, i, FTS3_SEGCURSOR_PENDING); - if( rc==SQLITE_DONE ) rc = SQLITE_OK; - } - sqlite3Fts3PendingTermsClear(p); - return rc; -} - -/* -** Encode N integers as varints into a blob. -*/ -static void fts3EncodeIntArray( - int N, /* The number of integers to encode */ - u32 *a, /* The integer values */ - char *zBuf, /* Write the BLOB here */ - int *pNBuf /* Write number of bytes if zBuf[] used here */ -){ - int i, j; - for(i=j=0; iiPrevDocid. The sizes are encoded as -** a blob of varints. -*/ -static void fts3InsertDocsize( - int *pRC, /* Result code */ - Fts3Table *p, /* Table into which to insert */ - u32 *aSz /* Sizes of each column, in tokens */ -){ - char *pBlob; /* The BLOB encoding of the document size */ - int nBlob; /* Number of bytes in the BLOB */ - sqlite3_stmt *pStmt; /* Statement used to insert the encoding */ - int rc; /* Result code from subfunctions */ - - if( *pRC ) return; - pBlob = sqlite3_malloc( 10*p->nColumn ); - if( pBlob==0 ){ - *pRC = SQLITE_NOMEM; - return; - } - fts3EncodeIntArray(p->nColumn, aSz, pBlob, &nBlob); - rc = fts3SqlStmt(p, SQL_REPLACE_DOCSIZE, &pStmt, 0); - if( rc ){ - sqlite3_free(pBlob); - *pRC = rc; - return; - } - sqlite3_bind_int64(pStmt, 1, p->iPrevDocid); - sqlite3_bind_blob(pStmt, 2, pBlob, nBlob, sqlite3_free); - sqlite3_step(pStmt); - *pRC = sqlite3_reset(pStmt); -} - -/* -** Record 0 of the %_stat table contains a blob consisting of N varints, -** where N is the number of user defined columns in the fts3 table plus -** two. If nCol is the number of user defined columns, then values of the -** varints are set as follows: -** -** Varint 0: Total number of rows in the table. -** -** Varint 1..nCol: For each column, the total number of tokens stored in -** the column for all rows of the table. -** -** Varint 1+nCol: The total size, in bytes, of all text values in all -** columns of all rows of the table. -** -*/ -static void fts3UpdateDocTotals( - int *pRC, /* The result code */ - Fts3Table *p, /* Table being updated */ - u32 *aSzIns, /* Size increases */ - u32 *aSzDel, /* Size decreases */ - int nChng /* Change in the number of documents */ -){ - char *pBlob; /* Storage for BLOB written into %_stat */ - int nBlob; /* Size of BLOB written into %_stat */ - u32 *a; /* Array of integers that becomes the BLOB */ - sqlite3_stmt *pStmt; /* Statement for reading and writing */ - int i; /* Loop counter */ - int rc; /* Result code from subfunctions */ - - const int nStat = p->nColumn+2; - - if( *pRC ) return; - a = sqlite3_malloc( (sizeof(u32)+10)*nStat ); - if( a==0 ){ - *pRC = SQLITE_NOMEM; - return; - } - pBlob = (char*)&a[nStat]; - rc = fts3SqlStmt(p, SQL_SELECT_DOCTOTAL, &pStmt, 0); - if( rc ){ - sqlite3_free(a); - *pRC = rc; - return; - } - if( sqlite3_step(pStmt)==SQLITE_ROW ){ - fts3DecodeIntArray(nStat, a, - sqlite3_column_blob(pStmt, 0), - sqlite3_column_bytes(pStmt, 0)); - }else{ - memset(a, 0, sizeof(u32)*(nStat) ); - } - sqlite3_reset(pStmt); - if( nChng<0 && a[0]<(u32)(-nChng) ){ - a[0] = 0; - }else{ - a[0] += nChng; - } - for(i=0; inColumn+1; i++){ - u32 x = a[i+1]; - if( x+aSzIns[i] < aSzDel[i] ){ - x = 0; - }else{ - x = x + aSzIns[i] - aSzDel[i]; - } - a[i+1] = x; - } - fts3EncodeIntArray(nStat, a, pBlob, &nBlob); - rc = fts3SqlStmt(p, SQL_REPLACE_DOCTOTAL, &pStmt, 0); - if( rc ){ - sqlite3_free(a); - *pRC = rc; - return; - } - sqlite3_bind_blob(pStmt, 1, pBlob, nBlob, SQLITE_STATIC); - sqlite3_step(pStmt); - *pRC = sqlite3_reset(pStmt); - sqlite3_free(a); -} - -static int fts3DoOptimize(Fts3Table *p, int bReturnDone){ - int i; - int bSeenDone = 0; - int rc = SQLITE_OK; - for(i=0; rc==SQLITE_OK && inIndex; i++){ - rc = fts3SegmentMerge(p, i, FTS3_SEGCURSOR_ALL); - if( rc==SQLITE_DONE ){ - bSeenDone = 1; - rc = SQLITE_OK; - } - } - sqlite3Fts3SegmentsClose(p); - sqlite3Fts3PendingTermsClear(p); - - return (rc==SQLITE_OK && bReturnDone && bSeenDone) ? SQLITE_DONE : rc; -} - -/* -** This function is called when the user executes the following statement: -** -** INSERT INTO () VALUES('rebuild'); -** -** The entire FTS index is discarded and rebuilt. If the table is one -** created using the content=xxx option, then the new index is based on -** the current contents of the xxx table. Otherwise, it is rebuilt based -** on the contents of the %_content table. -*/ -static int fts3DoRebuild(Fts3Table *p){ - int rc; /* Return Code */ - - rc = fts3DeleteAll(p, 0); - if( rc==SQLITE_OK ){ - u32 *aSz = 0; - u32 *aSzIns = 0; - u32 *aSzDel = 0; - sqlite3_stmt *pStmt = 0; - int nEntry = 0; - - /* Compose and prepare an SQL statement to loop through the content table */ - char *zSql = sqlite3_mprintf("SELECT %s" , p->zReadExprlist); - if( !zSql ){ - rc = SQLITE_NOMEM; - }else{ - rc = sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0); - sqlite3_free(zSql); - } - - if( rc==SQLITE_OK ){ - int nByte = sizeof(u32) * (p->nColumn+1)*3; - aSz = (u32 *)sqlite3_malloc(nByte); - if( aSz==0 ){ - rc = SQLITE_NOMEM; - }else{ - memset(aSz, 0, nByte); - aSzIns = &aSz[p->nColumn+1]; - aSzDel = &aSzIns[p->nColumn+1]; - } - } - - while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pStmt) ){ - int iCol; - rc = fts3PendingTermsDocid(p, sqlite3_column_int64(pStmt, 0)); - aSz[p->nColumn] = 0; - for(iCol=0; rc==SQLITE_OK && iColnColumn; iCol++){ - const char *z = (const char *) sqlite3_column_text(pStmt, iCol+1); - rc = fts3PendingTermsAdd(p, z, iCol, &aSz[iCol]); - aSz[p->nColumn] += sqlite3_column_bytes(pStmt, iCol+1); - } - if( p->bHasDocsize ){ - fts3InsertDocsize(&rc, p, aSz); - } - if( rc!=SQLITE_OK ){ - sqlite3_finalize(pStmt); - pStmt = 0; - }else{ - nEntry++; - for(iCol=0; iCol<=p->nColumn; iCol++){ - aSzIns[iCol] += aSz[iCol]; - } - } - } - if( p->bHasStat ){ - fts3UpdateDocTotals(&rc, p, aSzIns, aSzDel, nEntry); - } - sqlite3_free(aSz); - - if( pStmt ){ - int rc2 = sqlite3_finalize(pStmt); - if( rc==SQLITE_OK ){ - rc = rc2; - } - } - } - - return rc; -} - -/* -** Handle a 'special' INSERT of the form: -** -** "INSERT INTO tbl(tbl) VALUES()" -** -** Argument pVal contains the result of . Currently the only -** meaningful value to insert is the text 'optimize'. -*/ -static int fts3SpecialInsert(Fts3Table *p, sqlite3_value *pVal){ - int rc; /* Return Code */ - const char *zVal = (const char *)sqlite3_value_text(pVal); - int nVal = sqlite3_value_bytes(pVal); - - if( !zVal ){ - return SQLITE_NOMEM; - }else if( nVal==8 && 0==sqlite3_strnicmp(zVal, "optimize", 8) ){ - rc = fts3DoOptimize(p, 0); - }else if( nVal==7 && 0==sqlite3_strnicmp(zVal, "rebuild", 7) ){ - rc = fts3DoRebuild(p); -#ifdef SQLITE_TEST - }else if( nVal>9 && 0==sqlite3_strnicmp(zVal, "nodesize=", 9) ){ - p->nNodeSize = atoi(&zVal[9]); - rc = SQLITE_OK; - }else if( nVal>11 && 0==sqlite3_strnicmp(zVal, "maxpending=", 9) ){ - p->nMaxPendingData = atoi(&zVal[11]); - rc = SQLITE_OK; -#endif - }else{ - rc = SQLITE_ERROR; - } - - return rc; -} - -/* -** Delete all cached deferred doclists. Deferred doclists are cached -** (allocated) by the sqlite3Fts3CacheDeferredDoclists() function. -*/ -void sqlite3Fts3FreeDeferredDoclists(Fts3Cursor *pCsr){ - Fts3DeferredToken *pDef; - for(pDef=pCsr->pDeferred; pDef; pDef=pDef->pNext){ - fts3PendingListDelete(pDef->pList); - pDef->pList = 0; - } -} - -/* -** Free all entries in the pCsr->pDeffered list. Entries are added to -** this list using sqlite3Fts3DeferToken(). -*/ -void sqlite3Fts3FreeDeferredTokens(Fts3Cursor *pCsr){ - Fts3DeferredToken *pDef; - Fts3DeferredToken *pNext; - for(pDef=pCsr->pDeferred; pDef; pDef=pNext){ - pNext = pDef->pNext; - fts3PendingListDelete(pDef->pList); - sqlite3_free(pDef); - } - pCsr->pDeferred = 0; -} - -/* -** Generate deferred-doclists for all tokens in the pCsr->pDeferred list -** based on the row that pCsr currently points to. -** -** A deferred-doclist is like any other doclist with position information -** included, except that it only contains entries for a single row of the -** table, not for all rows. -*/ -int sqlite3Fts3CacheDeferredDoclists(Fts3Cursor *pCsr){ - int rc = SQLITE_OK; /* Return code */ - if( pCsr->pDeferred ){ - int i; /* Used to iterate through table columns */ - sqlite3_int64 iDocid; /* Docid of the row pCsr points to */ - Fts3DeferredToken *pDef; /* Used to iterate through deferred tokens */ - - Fts3Table *p = (Fts3Table *)pCsr->base.pVtab; - sqlite3_tokenizer *pT = p->pTokenizer; - sqlite3_tokenizer_module const *pModule = pT->pModule; - - assert( pCsr->isRequireSeek==0 ); - iDocid = sqlite3_column_int64(pCsr->pStmt, 0); - - for(i=0; inColumn && rc==SQLITE_OK; i++){ - const char *zText = (const char *)sqlite3_column_text(pCsr->pStmt, i+1); - sqlite3_tokenizer_cursor *pTC = 0; - - rc = pModule->xOpen(pT, zText, -1, &pTC); - while( rc==SQLITE_OK ){ - char const *zToken; /* Buffer containing token */ - int nToken; /* Number of bytes in token */ - int iDum1, iDum2; /* Dummy variables */ - int iPos; /* Position of token in zText */ - - pTC->pTokenizer = pT; - rc = pModule->xNext(pTC, &zToken, &nToken, &iDum1, &iDum2, &iPos); - for(pDef=pCsr->pDeferred; pDef && rc==SQLITE_OK; pDef=pDef->pNext){ - Fts3PhraseToken *pPT = pDef->pToken; - if( (pDef->iCol>=p->nColumn || pDef->iCol==i) - && (pPT->bFirst==0 || iPos==0) - && (pPT->n==nToken || (pPT->isPrefix && pPT->nz, pPT->n)) - ){ - fts3PendingListAppend(&pDef->pList, iDocid, i, iPos, &rc); - } - } - } - if( pTC ) pModule->xClose(pTC); - if( rc==SQLITE_DONE ) rc = SQLITE_OK; - } - - for(pDef=pCsr->pDeferred; pDef && rc==SQLITE_OK; pDef=pDef->pNext){ - if( pDef->pList ){ - rc = fts3PendingListAppendVarint(&pDef->pList, 0); - } - } - } - - return rc; -} - -int sqlite3Fts3DeferredTokenList( - Fts3DeferredToken *p, - char **ppData, - int *pnData -){ - char *pRet; - int nSkip; - sqlite3_int64 dummy; - - *ppData = 0; - *pnData = 0; - - if( p->pList==0 ){ - return SQLITE_OK; - } - - pRet = (char *)sqlite3_malloc(p->pList->nData); - if( !pRet ) return SQLITE_NOMEM; - - nSkip = sqlite3Fts3GetVarint(p->pList->aData, &dummy); - *pnData = p->pList->nData - nSkip; - *ppData = pRet; - - memcpy(pRet, &p->pList->aData[nSkip], *pnData); - return SQLITE_OK; -} - -/* -** Add an entry for token pToken to the pCsr->pDeferred list. -*/ -int sqlite3Fts3DeferToken( - Fts3Cursor *pCsr, /* Fts3 table cursor */ - Fts3PhraseToken *pToken, /* Token to defer */ - int iCol /* Column that token must appear in (or -1) */ -){ - Fts3DeferredToken *pDeferred; - pDeferred = sqlite3_malloc(sizeof(*pDeferred)); - if( !pDeferred ){ - return SQLITE_NOMEM; - } - memset(pDeferred, 0, sizeof(*pDeferred)); - pDeferred->pToken = pToken; - pDeferred->pNext = pCsr->pDeferred; - pDeferred->iCol = iCol; - pCsr->pDeferred = pDeferred; - - assert( pToken->pDeferred==0 ); - pToken->pDeferred = pDeferred; - - return SQLITE_OK; -} - -/* -** SQLite value pRowid contains the rowid of a row that may or may not be -** present in the FTS3 table. If it is, delete it and adjust the contents -** of subsiduary data structures accordingly. -*/ -static int fts3DeleteByRowid( - Fts3Table *p, - sqlite3_value *pRowid, - int *pnDoc, - u32 *aSzDel -){ - int isEmpty = 0; - int rc = fts3IsEmpty(p, pRowid, &isEmpty); - if( rc==SQLITE_OK ){ - if( isEmpty ){ - /* Deleting this row means the whole table is empty. In this case - ** delete the contents of all three tables and throw away any - ** data in the pendingTerms hash table. */ - rc = fts3DeleteAll(p, 1); - *pnDoc = *pnDoc - 1; - }else{ - sqlite3_int64 iRemove = sqlite3_value_int64(pRowid); - rc = fts3PendingTermsDocid(p, iRemove); - fts3DeleteTerms(&rc, p, pRowid, aSzDel); - if( p->zContentTbl==0 ){ - fts3SqlExec(&rc, p, SQL_DELETE_CONTENT, &pRowid); - if( sqlite3_changes(p->db) ) *pnDoc = *pnDoc - 1; - }else{ - *pnDoc = *pnDoc - 1; - } - if( p->bHasDocsize ){ - fts3SqlExec(&rc, p, SQL_DELETE_DOCSIZE, &pRowid); - } - } - } - - return rc; -} - -/* -** This function does the work for the xUpdate method of FTS3 virtual -** tables. -*/ -int sqlite3Fts3UpdateMethod( - sqlite3_vtab *pVtab, /* FTS3 vtab object */ - int nArg, /* Size of argument array */ - sqlite3_value **apVal, /* Array of arguments */ - sqlite_int64 *pRowid /* OUT: The affected (or effected) rowid */ -){ - Fts3Table *p = (Fts3Table *)pVtab; - int rc = SQLITE_OK; /* Return Code */ - int isRemove = 0; /* True for an UPDATE or DELETE */ - u32 *aSzIns = 0; /* Sizes of inserted documents */ - u32 *aSzDel; /* Sizes of deleted documents */ - int nChng = 0; /* Net change in number of documents */ - int bInsertDone = 0; - - assert( p->pSegments==0 ); - - /* Check for a "special" INSERT operation. One of the form: - ** - ** INSERT INTO xyz(xyz) VALUES('command'); - */ - if( nArg>1 - && sqlite3_value_type(apVal[0])==SQLITE_NULL - && sqlite3_value_type(apVal[p->nColumn+2])!=SQLITE_NULL - ){ - rc = fts3SpecialInsert(p, apVal[p->nColumn+2]); - goto update_out; - } - - /* Allocate space to hold the change in document sizes */ - aSzIns = sqlite3_malloc( sizeof(aSzIns[0])*(p->nColumn+1)*2 ); - if( aSzIns==0 ){ - rc = SQLITE_NOMEM; - goto update_out; - } - aSzDel = &aSzIns[p->nColumn+1]; - memset(aSzIns, 0, sizeof(aSzIns[0])*(p->nColumn+1)*2); - - /* If this is an INSERT operation, or an UPDATE that modifies the rowid - ** value, then this operation requires constraint handling. - ** - ** If the on-conflict mode is REPLACE, this means that the existing row - ** should be deleted from the database before inserting the new row. Or, - ** if the on-conflict mode is other than REPLACE, then this method must - ** detect the conflict and return SQLITE_CONSTRAINT before beginning to - ** modify the database file. - */ - if( nArg>1 && p->zContentTbl==0 ){ - /* Find the value object that holds the new rowid value. */ - sqlite3_value *pNewRowid = apVal[3+p->nColumn]; - if( sqlite3_value_type(pNewRowid)==SQLITE_NULL ){ - pNewRowid = apVal[1]; - } - - if( sqlite3_value_type(pNewRowid)!=SQLITE_NULL && ( - sqlite3_value_type(apVal[0])==SQLITE_NULL - || sqlite3_value_int64(apVal[0])!=sqlite3_value_int64(pNewRowid) - )){ - /* The new rowid is not NULL (in this case the rowid will be - ** automatically assigned and there is no chance of a conflict), and - ** the statement is either an INSERT or an UPDATE that modifies the - ** rowid column. So if the conflict mode is REPLACE, then delete any - ** existing row with rowid=pNewRowid. - ** - ** Or, if the conflict mode is not REPLACE, insert the new record into - ** the %_content table. If we hit the duplicate rowid constraint (or any - ** other error) while doing so, return immediately. - ** - ** This branch may also run if pNewRowid contains a value that cannot - ** be losslessly converted to an integer. In this case, the eventual - ** call to fts3InsertData() (either just below or further on in this - ** function) will return SQLITE_MISMATCH. If fts3DeleteByRowid is - ** invoked, it will delete zero rows (since no row will have - ** docid=$pNewRowid if $pNewRowid is not an integer value). - */ - if( sqlite3_vtab_on_conflict(p->db)==SQLITE_REPLACE ){ - rc = fts3DeleteByRowid(p, pNewRowid, &nChng, aSzDel); - }else{ - rc = fts3InsertData(p, apVal, pRowid); - bInsertDone = 1; - } - } - } - if( rc!=SQLITE_OK ){ - goto update_out; - } - - /* If this is a DELETE or UPDATE operation, remove the old record. */ - if( sqlite3_value_type(apVal[0])!=SQLITE_NULL ){ - assert( sqlite3_value_type(apVal[0])==SQLITE_INTEGER ); - rc = fts3DeleteByRowid(p, apVal[0], &nChng, aSzDel); - isRemove = 1; - } - - /* If this is an INSERT or UPDATE operation, insert the new record. */ - if( nArg>1 && rc==SQLITE_OK ){ - if( bInsertDone==0 ){ - rc = fts3InsertData(p, apVal, pRowid); - if( rc==SQLITE_CONSTRAINT && p->zContentTbl==0 ){ - rc = FTS_CORRUPT_VTAB; - } - } - if( rc==SQLITE_OK && (!isRemove || *pRowid!=p->iPrevDocid ) ){ - rc = fts3PendingTermsDocid(p, *pRowid); - } - if( rc==SQLITE_OK ){ - assert( p->iPrevDocid==*pRowid ); - rc = fts3InsertTerms(p, apVal, aSzIns); - } - if( p->bHasDocsize ){ - fts3InsertDocsize(&rc, p, aSzIns); - } - nChng++; - } - - if( p->bHasStat ){ - fts3UpdateDocTotals(&rc, p, aSzIns, aSzDel, nChng); - } - - update_out: - sqlite3_free(aSzIns); - sqlite3Fts3SegmentsClose(p); - return rc; -} - -/* -** Flush any data in the pending-terms hash table to disk. If successful, -** merge all segments in the database (including the new segment, if -** there was any data to flush) into a single segment. -*/ -int sqlite3Fts3Optimize(Fts3Table *p){ - int rc; - rc = sqlite3_exec(p->db, "SAVEPOINT fts3", 0, 0, 0); - if( rc==SQLITE_OK ){ - rc = fts3DoOptimize(p, 1); - if( rc==SQLITE_OK || rc==SQLITE_DONE ){ - int rc2 = sqlite3_exec(p->db, "RELEASE fts3", 0, 0, 0); - if( rc2!=SQLITE_OK ) rc = rc2; - }else{ - sqlite3_exec(p->db, "ROLLBACK TO fts3", 0, 0, 0); - sqlite3_exec(p->db, "RELEASE fts3", 0, 0, 0); - } - } - sqlite3Fts3SegmentsClose(p); - return rc; -} - -#endif diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3speed.tcl b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3speed.tcl deleted file mode 100644 index 2f5e611005..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/fts3speed.tcl +++ /dev/null @@ -1,122 +0,0 @@ - - -#-------------------------------------------------------------------------- -# This script contains several sub-programs used to test FTS3/FTS4 -# performance. It does not run the queries directly, but generates SQL -# scripts that can be run using the shell tool. -# -# The following cases are tested: -# -# 1. Inserting documents into an FTS3 table. -# 2. Optimizing an FTS3 table (i.e. "INSERT INTO t1 VALUES('optimize')"). -# 3. Deleting documents from an FTS3 table. -# 4. Querying FTS3 tables. -# - -# Number of tokens in vocabulary. And number of tokens in each document. -# -set VOCAB_SIZE 2000 -set DOC_SIZE 100 - -set NUM_INSERTS 100000 -set NUM_SELECTS 1000 - -# Force everything in this script to be deterministic. -# -expr {srand(0)} - -proc usage {} { - puts stderr "Usage: $::argv0 " - exit -1 -} - -proc sql {sql} { - puts $::fd $sql -} - - -# Return a list of $nWord randomly generated tokens each between 2 and 10 -# characters in length. -# -proc build_vocab {nWord} { - set ret [list] - set chars [list a b c d e f g h i j k l m n o p q r s t u v w x y z] - for {set i 0} {$i<$nWord} {incr i} { - set len [expr {int((rand()*9.0)+2)}] - set term "" - for {set j 0} {$j<$len} {incr j} { - append term [lindex $chars [expr {int(rand()*[llength $chars])}]] - } - lappend ret $term - } - set ret -} - -proc select_term {} { - set n [llength $::vocab] - set t [expr int(rand()*$n*3)] - if {$t>=2*$n} { set t [expr {($t-2*$n)/100}] } - if {$t>=$n} { set t [expr {($t-$n)/10}] } - lindex $::vocab $t -} - -proc select_doc {nTerm} { - set ret [list] - for {set i 0} {$i<$nTerm} {incr i} { - lappend ret [select_term] - } - set ret -} - -proc test_1 {nInsert} { - sql "PRAGMA synchronous = OFF;" - sql "DROP TABLE IF EXISTS t1;" - sql "CREATE VIRTUAL TABLE t1 USING fts4;" - for {set i 0} {$i < $nInsert} {incr i} { - set doc [select_doc $::DOC_SIZE] - sql "INSERT INTO t1 VALUES('$doc');" - } -} - -proc test_2 {} { - sql "INSERT INTO t1(t1) VALUES('optimize');" -} - -proc test_3 {nSelect} { - for {set i 0} {$i < $nSelect} {incr i} { - sql "SELECT count(*) FROM t1 WHERE t1 MATCH '[select_term]';" - } -} - -proc test_4 {nSelect} { - for {set i 0} {$i < $nSelect} {incr i} { - sql "SELECT count(*) FROM t1 WHERE t1 MATCH '[select_term] [select_term]';" - } -} - -if {[llength $argv]!=0} usage - -set ::vocab [build_vocab $::VOCAB_SIZE] - -set ::fd [open fts3speed_insert.sql w] -test_1 $NUM_INSERTS -close $::fd - -set ::fd [open fts3speed_select.sql w] -test_3 $NUM_SELECTS -close $::fd - -set ::fd [open fts3speed_select2.sql w] -test_4 $NUM_SELECTS -close $::fd - -set ::fd [open fts3speed_optimize.sql w] -test_2 -close $::fd - -puts "Success. Created files:" -puts " fts3speed_insert.sql" -puts " fts3speed_select.sql" -puts " fts3speed_select2.sql" -puts " fts3speed_optimize.sql" - diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/mkfts3amal.tcl b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/mkfts3amal.tcl deleted file mode 100644 index 5f51ad09a9..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/fts3/mkfts3amal.tcl +++ /dev/null @@ -1,115 +0,0 @@ -#!/usr/bin/tclsh -# -# This script builds a single C code file holding all of FTS3 code. -# The name of the output file is fts3amal.c. To build this file, -# first do: -# -# make target_source -# -# The make target above moves all of the source code files into -# a subdirectory named "tsrc". (This script expects to find the files -# there and will not work if they are not found.) -# -# After the "tsrc" directory has been created and populated, run -# this script: -# -# tclsh mkfts3amal.tcl -# -# The amalgamated FTS3 code will be written into fts3amal.c -# - -# Open the output file and write a header comment at the beginning -# of the file. -# -set out [open fts3amal.c w] -set today [clock format [clock seconds] -format "%Y-%m-%d %H:%M:%S UTC" -gmt 1] -puts $out [subst \ -{/****************************************************************************** -** This file is an amalgamation of separate C source files from the SQLite -** Full Text Search extension 2 (fts3). By combining all the individual C -** code files into this single large file, the entire code can be compiled -** as a one translation unit. This allows many compilers to do optimizations -** that would not be possible if the files were compiled separately. It also -** makes the code easier to import into other projects. -** -** This amalgamation was generated on $today. -*/}] - -# These are the header files used by FTS3. The first time any of these -# files are seen in a #include statement in the C code, include the complete -# text of the file in-line. The file only needs to be included once. -# -foreach hdr { - fts3.h - fts3_hash.h - fts3_tokenizer.h - sqlite3.h - sqlite3ext.h -} { - set available_hdr($hdr) 1 -} - -# 78 stars used for comment formatting. -set s78 \ -{*****************************************************************************} - -# Insert a comment into the code -# -proc section_comment {text} { - global out s78 - set n [string length $text] - set nstar [expr {60 - $n}] - set stars [string range $s78 0 $nstar] - puts $out "/************** $text $stars/" -} - -# Read the source file named $filename and write it into the -# sqlite3.c output file. If any #include statements are seen, -# process them approprately. -# -proc copy_file {filename} { - global seen_hdr available_hdr out - set tail [file tail $filename] - section_comment "Begin file $tail" - set in [open $filename r] - while {![eof $in]} { - set line [gets $in] - if {[regexp {^#\s*include\s+["<]([^">]+)[">]} $line all hdr]} { - if {[info exists available_hdr($hdr)]} { - if {$available_hdr($hdr)} { - section_comment "Include $hdr in the middle of $tail" - copy_file tsrc/$hdr - section_comment "Continuing where we left off in $tail" - } - } elseif {![info exists seen_hdr($hdr)]} { - set seen_hdr($hdr) 1 - puts $out $line - } - } elseif {[regexp {^#ifdef __cplusplus} $line]} { - puts $out "#if 0" - } elseif {[regexp {^#line} $line]} { - # Skip #line directives. - } else { - puts $out $line - } - } - close $in - section_comment "End of $tail" -} - - -# Process the source files. Process files containing commonly -# used subroutines first in order to help the compiler find -# inlining opportunities. -# -foreach file { - fts3.c - fts3_hash.c - fts3_porter.c - fts3_tokenizer.c - fts3_tokenizer1.c -} { - copy_file tsrc/$file -} - -close $out diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/icu/README.txt b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/icu/README.txt deleted file mode 100644 index d8b1ad636c..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/icu/README.txt +++ /dev/null @@ -1,169 +0,0 @@ - -This directory contains source code for the SQLite "ICU" extension, an -integration of the "International Components for Unicode" library with -SQLite. Documentation follows. - - 1. Features - - 1.1 SQL Scalars upper() and lower() - 1.2 Unicode Aware LIKE Operator - 1.3 ICU Collation Sequences - 1.4 SQL REGEXP Operator - - 2. Compilation and Usage - - 3. Bugs, Problems and Security Issues - - 3.1 The "case_sensitive_like" Pragma - 3.2 The SQLITE_MAX_LIKE_PATTERN_LENGTH Macro - 3.3 Collation Sequence Security Issue - - -1. FEATURES - - 1.1 SQL Scalars upper() and lower() - - SQLite's built-in implementations of these two functions only - provide case mapping for the 26 letters used in the English - language. The ICU based functions provided by this extension - provide case mapping, where defined, for the full range of - unicode characters. - - ICU provides two types of case mapping, "general" case mapping and - "language specific". Refer to ICU documentation for the differences - between the two. Specifically: - - http://www.icu-project.org/userguide/caseMappings.html - http://www.icu-project.org/userguide/posix.html#case_mappings - - To utilise "general" case mapping, the upper() or lower() scalar - functions are invoked with one argument: - - upper('ABC') -> 'abc' - lower('abc') -> 'ABC' - - To access ICU "language specific" case mapping, upper() or lower() - should be invoked with two arguments. The second argument is the name - of the locale to use. Passing an empty string ("") or SQL NULL value - as the second argument is the same as invoking the 1 argument version - of upper() or lower(): - - lower('I', 'en_us') -> 'i' - lower('I', 'tr_tr') -> 'ı' (small dotless i) - - 1.2 Unicode Aware LIKE Operator - - Similarly to the upper() and lower() functions, the built-in SQLite LIKE - operator understands case equivalence for the 26 letters of the English - language alphabet. The implementation of LIKE included in this - extension uses the ICU function u_foldCase() to provide case - independent comparisons for the full range of unicode characters. - - The U_FOLD_CASE_DEFAULT flag is passed to u_foldCase(), meaning the - dotless 'I' character used in the Turkish language is considered - to be in the same equivalence class as the dotted 'I' character - used by many languages (including English). - - 1.3 ICU Collation Sequences - - A special SQL scalar function, icu_load_collation() is provided that - may be used to register ICU collation sequences with SQLite. It - is always called with exactly two arguments, the ICU locale - identifying the collation sequence to ICU, and the name of the - SQLite collation sequence to create. For example, to create an - SQLite collation sequence named "turkish" using Turkish language - sorting rules, the SQL statement: - - SELECT icu_load_collation('tr_TR', 'turkish'); - - Or, for Australian English: - - SELECT icu_load_collation('en_AU', 'australian'); - - The identifiers "turkish" and "australian" may then be used - as collation sequence identifiers in SQL statements: - - CREATE TABLE aust_turkish_penpals( - australian_penpal_name TEXT COLLATE australian, - turkish_penpal_name TEXT COLLATE turkish - ); - - 1.4 SQL REGEXP Operator - - This extension provides an implementation of the SQL binary - comparision operator "REGEXP", based on the regular expression functions - provided by the ICU library. The syntax of the operator is as described - in SQLite documentation: - - REGEXP - - This extension uses the ICU defaults for regular expression matching - behaviour. Specifically, this means that: - - * Matching is case-sensitive, - * Regular expression comments are not allowed within patterns, and - * The '^' and '$' characters match the beginning and end of the - argument, not the beginning and end of lines within - the argument. - - Even more specifically, the value passed to the "flags" parameter - of ICU C function uregex_open() is 0. - - -2 COMPILATION AND USAGE - - The easiest way to compile and use the ICU extension is to build - and use it as a dynamically loadable SQLite extension. To do this - using gcc on *nix: - - gcc -shared icu.c `icu-config --ldflags` -o libSqliteIcu.so - - You may need to add "-I" flags so that gcc can find sqlite3ext.h - and sqlite3.h. The resulting shared lib, libSqliteIcu.so, may be - loaded into sqlite in the same way as any other dynamically loadable - extension. - - -3 BUGS, PROBLEMS AND SECURITY ISSUES - - 3.1 The "case_sensitive_like" Pragma - - This extension does not work well with the "case_sensitive_like" - pragma. If this pragma is used before the ICU extension is loaded, - then the pragma has no effect. If the pragma is used after the ICU - extension is loaded, then SQLite ignores the ICU implementation and - always uses the built-in LIKE operator. - - The ICU extension LIKE operator is always case insensitive. - - 3.2 The SQLITE_MAX_LIKE_PATTERN_LENGTH Macro - - Passing very long patterns to the built-in SQLite LIKE operator can - cause excessive CPU usage. To curb this problem, SQLite defines the - SQLITE_MAX_LIKE_PATTERN_LENGTH macro as the maximum length of a - pattern in bytes (irrespective of encoding). The default value is - defined in internal header file "limits.h". - - The ICU extension LIKE implementation suffers from the same - problem and uses the same solution. However, since the ICU extension - code does not include the SQLite file "limits.h", modifying - the default value therein does not affect the ICU extension. - The default value of SQLITE_MAX_LIKE_PATTERN_LENGTH used by - the ICU extension LIKE operator is 50000, defined in source - file "icu.c". - - 3.3 Collation Sequence Security Issue - - Internally, SQLite assumes that indices stored in database files - are sorted according to the collation sequence indicated by the - SQL schema. Changing the definition of a collation sequence after - an index has been built is therefore equivalent to database - corruption. The SQLite library is not very well tested under - these conditions, and may contain potential buffer overruns - or other programming errors that could be exploited by a malicious - programmer. - - If the ICU extension is used in an environment where potentially - malicious users may execute arbitrary SQL (i.e. gears), they - should be prevented from invoking the icu_load_collation() function, - possibly using the authorisation callback. diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/icu/icu.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/icu/icu.c deleted file mode 100644 index 66bd72a097..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/icu/icu.c +++ /dev/null @@ -1,501 +0,0 @@ -/* -** 2007 May 6 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** $Id: icu.c,v 1.7 2007/12/13 21:54:11 drh Exp $ -** -** This file implements an integration between the ICU library -** ("International Components for Unicode", an open-source library -** for handling unicode data) and SQLite. The integration uses -** ICU to provide the following to SQLite: -** -** * An implementation of the SQL regexp() function (and hence REGEXP -** operator) using the ICU uregex_XX() APIs. -** -** * Implementations of the SQL scalar upper() and lower() functions -** for case mapping. -** -** * Integration of ICU and SQLite collation seqences. -** -** * An implementation of the LIKE operator that uses ICU to -** provide case-independent matching. -*/ - -#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_ICU) - -/* Include ICU headers */ -#include -#include -#include -#include - -#include - -#ifndef SQLITE_CORE - #include "sqlite3ext.h" - SQLITE_EXTENSION_INIT1 -#else - #include "sqlite3.h" -#endif - -/* -** Maximum length (in bytes) of the pattern in a LIKE or GLOB -** operator. -*/ -#ifndef SQLITE_MAX_LIKE_PATTERN_LENGTH -# define SQLITE_MAX_LIKE_PATTERN_LENGTH 50000 -#endif - -/* -** Version of sqlite3_free() that is always a function, never a macro. -*/ -static void xFree(void *p){ - sqlite3_free(p); -} - -/* -** Compare two UTF-8 strings for equality where the first string is -** a "LIKE" expression. Return true (1) if they are the same and -** false (0) if they are different. -*/ -static int icuLikeCompare( - const uint8_t *zPattern, /* LIKE pattern */ - const uint8_t *zString, /* The UTF-8 string to compare against */ - const UChar32 uEsc /* The escape character */ -){ - static const int MATCH_ONE = (UChar32)'_'; - static const int MATCH_ALL = (UChar32)'%'; - - int iPattern = 0; /* Current byte index in zPattern */ - int iString = 0; /* Current byte index in zString */ - - int prevEscape = 0; /* True if the previous character was uEsc */ - - while( zPattern[iPattern]!=0 ){ - - /* Read (and consume) the next character from the input pattern. */ - UChar32 uPattern; - U8_NEXT_UNSAFE(zPattern, iPattern, uPattern); - assert(uPattern!=0); - - /* There are now 4 possibilities: - ** - ** 1. uPattern is an unescaped match-all character "%", - ** 2. uPattern is an unescaped match-one character "_", - ** 3. uPattern is an unescaped escape character, or - ** 4. uPattern is to be handled as an ordinary character - */ - if( !prevEscape && uPattern==MATCH_ALL ){ - /* Case 1. */ - uint8_t c; - - /* Skip any MATCH_ALL or MATCH_ONE characters that follow a - ** MATCH_ALL. For each MATCH_ONE, skip one character in the - ** test string. - */ - while( (c=zPattern[iPattern]) == MATCH_ALL || c == MATCH_ONE ){ - if( c==MATCH_ONE ){ - if( zString[iString]==0 ) return 0; - U8_FWD_1_UNSAFE(zString, iString); - } - iPattern++; - } - - if( zPattern[iPattern]==0 ) return 1; - - while( zString[iString] ){ - if( icuLikeCompare(&zPattern[iPattern], &zString[iString], uEsc) ){ - return 1; - } - U8_FWD_1_UNSAFE(zString, iString); - } - return 0; - - }else if( !prevEscape && uPattern==MATCH_ONE ){ - /* Case 2. */ - if( zString[iString]==0 ) return 0; - U8_FWD_1_UNSAFE(zString, iString); - - }else if( !prevEscape && uPattern==uEsc){ - /* Case 3. */ - prevEscape = 1; - - }else{ - /* Case 4. */ - UChar32 uString; - U8_NEXT_UNSAFE(zString, iString, uString); - uString = u_foldCase(uString, U_FOLD_CASE_DEFAULT); - uPattern = u_foldCase(uPattern, U_FOLD_CASE_DEFAULT); - if( uString!=uPattern ){ - return 0; - } - prevEscape = 0; - } - } - - return zString[iString]==0; -} - -/* -** Implementation of the like() SQL function. This function implements -** the build-in LIKE operator. The first argument to the function is the -** pattern and the second argument is the string. So, the SQL statements: -** -** A LIKE B -** -** is implemented as like(B, A). If there is an escape character E, -** -** A LIKE B ESCAPE E -** -** is mapped to like(B, A, E). -*/ -static void icuLikeFunc( - sqlite3_context *context, - int argc, - sqlite3_value **argv -){ - const unsigned char *zA = sqlite3_value_text(argv[0]); - const unsigned char *zB = sqlite3_value_text(argv[1]); - UChar32 uEsc = 0; - - /* Limit the length of the LIKE or GLOB pattern to avoid problems - ** of deep recursion and N*N behavior in patternCompare(). - */ - if( sqlite3_value_bytes(argv[0])>SQLITE_MAX_LIKE_PATTERN_LENGTH ){ - sqlite3_result_error(context, "LIKE or GLOB pattern too complex", -1); - return; - } - - - if( argc==3 ){ - /* The escape character string must consist of a single UTF-8 character. - ** Otherwise, return an error. - */ - int nE= sqlite3_value_bytes(argv[2]); - const unsigned char *zE = sqlite3_value_text(argv[2]); - int i = 0; - if( zE==0 ) return; - U8_NEXT(zE, i, nE, uEsc); - if( i!=nE){ - sqlite3_result_error(context, - "ESCAPE expression must be a single character", -1); - return; - } - } - - if( zA && zB ){ - sqlite3_result_int(context, icuLikeCompare(zA, zB, uEsc)); - } -} - -/* -** This function is called when an ICU function called from within -** the implementation of an SQL scalar function returns an error. -** -** The scalar function context passed as the first argument is -** loaded with an error message based on the following two args. -*/ -static void icuFunctionError( - sqlite3_context *pCtx, /* SQLite scalar function context */ - const char *zName, /* Name of ICU function that failed */ - UErrorCode e /* Error code returned by ICU function */ -){ - char zBuf[128]; - sqlite3_snprintf(128, zBuf, "ICU error: %s(): %s", zName, u_errorName(e)); - zBuf[127] = '\0'; - sqlite3_result_error(pCtx, zBuf, -1); -} - -/* -** Function to delete compiled regexp objects. Registered as -** a destructor function with sqlite3_set_auxdata(). -*/ -static void icuRegexpDelete(void *p){ - URegularExpression *pExpr = (URegularExpression *)p; - uregex_close(pExpr); -} - -/* -** Implementation of SQLite REGEXP operator. This scalar function takes -** two arguments. The first is a regular expression pattern to compile -** the second is a string to match against that pattern. If either -** argument is an SQL NULL, then NULL Is returned. Otherwise, the result -** is 1 if the string matches the pattern, or 0 otherwise. -** -** SQLite maps the regexp() function to the regexp() operator such -** that the following two are equivalent: -** -** zString REGEXP zPattern -** regexp(zPattern, zString) -** -** Uses the following ICU regexp APIs: -** -** uregex_open() -** uregex_matches() -** uregex_close() -*/ -static void icuRegexpFunc(sqlite3_context *p, int nArg, sqlite3_value **apArg){ - UErrorCode status = U_ZERO_ERROR; - URegularExpression *pExpr; - UBool res; - const UChar *zString = sqlite3_value_text16(apArg[1]); - - (void)nArg; /* Unused parameter */ - - /* If the left hand side of the regexp operator is NULL, - ** then the result is also NULL. - */ - if( !zString ){ - return; - } - - pExpr = sqlite3_get_auxdata(p, 0); - if( !pExpr ){ - const UChar *zPattern = sqlite3_value_text16(apArg[0]); - if( !zPattern ){ - return; - } - pExpr = uregex_open(zPattern, -1, 0, 0, &status); - - if( U_SUCCESS(status) ){ - sqlite3_set_auxdata(p, 0, pExpr, icuRegexpDelete); - }else{ - assert(!pExpr); - icuFunctionError(p, "uregex_open", status); - return; - } - } - - /* Configure the text that the regular expression operates on. */ - uregex_setText(pExpr, zString, -1, &status); - if( !U_SUCCESS(status) ){ - icuFunctionError(p, "uregex_setText", status); - return; - } - - /* Attempt the match */ - res = uregex_matches(pExpr, 0, &status); - if( !U_SUCCESS(status) ){ - icuFunctionError(p, "uregex_matches", status); - return; - } - - /* Set the text that the regular expression operates on to a NULL - ** pointer. This is not really necessary, but it is tidier than - ** leaving the regular expression object configured with an invalid - ** pointer after this function returns. - */ - uregex_setText(pExpr, 0, 0, &status); - - /* Return 1 or 0. */ - sqlite3_result_int(p, res ? 1 : 0); -} - -/* -** Implementations of scalar functions for case mapping - upper() and -** lower(). Function upper() converts its input to upper-case (ABC). -** Function lower() converts to lower-case (abc). -** -** ICU provides two types of case mapping, "general" case mapping and -** "language specific". Refer to ICU documentation for the differences -** between the two. -** -** To utilise "general" case mapping, the upper() or lower() scalar -** functions are invoked with one argument: -** -** upper('ABC') -> 'abc' -** lower('abc') -> 'ABC' -** -** To access ICU "language specific" case mapping, upper() or lower() -** should be invoked with two arguments. The second argument is the name -** of the locale to use. Passing an empty string ("") or SQL NULL value -** as the second argument is the same as invoking the 1 argument version -** of upper() or lower(). -** -** lower('I', 'en_us') -> 'i' -** lower('I', 'tr_tr') -> 'ı' (small dotless i) -** -** http://www.icu-project.org/userguide/posix.html#case_mappings -*/ -static void icuCaseFunc16(sqlite3_context *p, int nArg, sqlite3_value **apArg){ - const UChar *zInput; - UChar *zOutput; - int nInput; - int nOutput; - - UErrorCode status = U_ZERO_ERROR; - const char *zLocale = 0; - - assert(nArg==1 || nArg==2); - if( nArg==2 ){ - zLocale = (const char *)sqlite3_value_text(apArg[1]); - } - - zInput = sqlite3_value_text16(apArg[0]); - if( !zInput ){ - return; - } - nInput = sqlite3_value_bytes16(apArg[0]); - - nOutput = nInput * 2 + 2; - zOutput = sqlite3_malloc(nOutput); - if( !zOutput ){ - return; - } - - if( sqlite3_user_data(p) ){ - u_strToUpper(zOutput, nOutput/2, zInput, nInput/2, zLocale, &status); - }else{ - u_strToLower(zOutput, nOutput/2, zInput, nInput/2, zLocale, &status); - } - - if( !U_SUCCESS(status) ){ - icuFunctionError(p, "u_strToLower()/u_strToUpper", status); - return; - } - - sqlite3_result_text16(p, zOutput, -1, xFree); -} - -/* -** Collation sequence destructor function. The pCtx argument points to -** a UCollator structure previously allocated using ucol_open(). -*/ -static void icuCollationDel(void *pCtx){ - UCollator *p = (UCollator *)pCtx; - ucol_close(p); -} - -/* -** Collation sequence comparison function. The pCtx argument points to -** a UCollator structure previously allocated using ucol_open(). -*/ -static int icuCollationColl( - void *pCtx, - int nLeft, - const void *zLeft, - int nRight, - const void *zRight -){ - UCollationResult res; - UCollator *p = (UCollator *)pCtx; - res = ucol_strcoll(p, (UChar *)zLeft, nLeft/2, (UChar *)zRight, nRight/2); - switch( res ){ - case UCOL_LESS: return -1; - case UCOL_GREATER: return +1; - case UCOL_EQUAL: return 0; - } - assert(!"Unexpected return value from ucol_strcoll()"); - return 0; -} - -/* -** Implementation of the scalar function icu_load_collation(). -** -** This scalar function is used to add ICU collation based collation -** types to an SQLite database connection. It is intended to be called -** as follows: -** -** SELECT icu_load_collation(, ); -** -** Where is a string containing an ICU locale identifier (i.e. -** "en_AU", "tr_TR" etc.) and is the name of the -** collation sequence to create. -*/ -static void icuLoadCollation( - sqlite3_context *p, - int nArg, - sqlite3_value **apArg -){ - sqlite3 *db = (sqlite3 *)sqlite3_user_data(p); - UErrorCode status = U_ZERO_ERROR; - const char *zLocale; /* Locale identifier - (eg. "jp_JP") */ - const char *zName; /* SQL Collation sequence name (eg. "japanese") */ - UCollator *pUCollator; /* ICU library collation object */ - int rc; /* Return code from sqlite3_create_collation_x() */ - - assert(nArg==2); - zLocale = (const char *)sqlite3_value_text(apArg[0]); - zName = (const char *)sqlite3_value_text(apArg[1]); - - if( !zLocale || !zName ){ - return; - } - - pUCollator = ucol_open(zLocale, &status); - if( !U_SUCCESS(status) ){ - icuFunctionError(p, "ucol_open", status); - return; - } - assert(p); - - rc = sqlite3_create_collation_v2(db, zName, SQLITE_UTF16, (void *)pUCollator, - icuCollationColl, icuCollationDel - ); - if( rc!=SQLITE_OK ){ - ucol_close(pUCollator); - sqlite3_result_error(p, "Error registering collation function", -1); - } -} - -/* -** Register the ICU extension functions with database db. -*/ -int sqlite3IcuInit(sqlite3 *db){ - struct IcuScalar { - const char *zName; /* Function name */ - int nArg; /* Number of arguments */ - int enc; /* Optimal text encoding */ - void *pContext; /* sqlite3_user_data() context */ - void (*xFunc)(sqlite3_context*,int,sqlite3_value**); - } scalars[] = { - {"regexp", 2, SQLITE_ANY, 0, icuRegexpFunc}, - - {"lower", 1, SQLITE_UTF16, 0, icuCaseFunc16}, - {"lower", 2, SQLITE_UTF16, 0, icuCaseFunc16}, - {"upper", 1, SQLITE_UTF16, (void*)1, icuCaseFunc16}, - {"upper", 2, SQLITE_UTF16, (void*)1, icuCaseFunc16}, - - {"lower", 1, SQLITE_UTF8, 0, icuCaseFunc16}, - {"lower", 2, SQLITE_UTF8, 0, icuCaseFunc16}, - {"upper", 1, SQLITE_UTF8, (void*)1, icuCaseFunc16}, - {"upper", 2, SQLITE_UTF8, (void*)1, icuCaseFunc16}, - - {"like", 2, SQLITE_UTF8, 0, icuLikeFunc}, - {"like", 3, SQLITE_UTF8, 0, icuLikeFunc}, - - {"icu_load_collation", 2, SQLITE_UTF8, (void*)db, icuLoadCollation}, - }; - - int rc = SQLITE_OK; - int i; - - for(i=0; rc==SQLITE_OK && i<(int)(sizeof(scalars)/sizeof(scalars[0])); i++){ - struct IcuScalar *p = &scalars[i]; - rc = sqlite3_create_function( - db, p->zName, p->nArg, p->enc, p->pContext, p->xFunc, 0, 0 - ); - } - - return rc; -} - -#if !SQLITE_CORE -int sqlite3_extension_init( - sqlite3 *db, - char **pzErrMsg, - const sqlite3_api_routines *pApi -){ - SQLITE_EXTENSION_INIT2(pApi) - return sqlite3IcuInit(db); -} -#endif - -#endif diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/icu/sqliteicu.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/icu/sqliteicu.h deleted file mode 100644 index 93ba1ad0bf..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/icu/sqliteicu.h +++ /dev/null @@ -1,27 +0,0 @@ -/* -** 2008 May 26 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This header file is used by programs that want to link against the -** ICU extension. All it does is declare the sqlite3IcuInit() interface. -*/ -#include "sqlite3.h" - -#ifdef __cplusplus -extern "C" { -#endif /* __cplusplus */ - -int sqlite3IcuInit(sqlite3 *db); - -#ifdef __cplusplus -} /* extern "C" */ -#endif /* __cplusplus */ - diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/README b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/README deleted file mode 100644 index c7a9eb3ff9..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/README +++ /dev/null @@ -1,120 +0,0 @@ - -This directory contains an SQLite extension that implements a virtual -table type that allows users to create, query and manipulate r-tree[1] -data structures inside of SQLite databases. Users create, populate -and query r-tree structures using ordinary SQL statements. - - 1. SQL Interface - - 1.1 Table Creation - 1.2 Data Manipulation - 1.3 Data Querying - 1.4 Introspection and Analysis - - 2. Compilation and Deployment - - 3. References - - -1. SQL INTERFACE - - 1.1 Table Creation. - - All r-tree virtual tables have an odd number of columns between - 3 and 11. Unlike regular SQLite tables, r-tree tables are strongly - typed. - - The leftmost column is always the pimary key and contains 64-bit - integer values. Each subsequent column contains a 32-bit real - value. For each pair of real values, the first (leftmost) must be - less than or equal to the second. R-tree tables may be - constructed using the following syntax: - - CREATE VIRTUAL TABLE USING rtree() - - For example: - - CREATE VIRTUAL TABLE boxes USING rtree(boxno, xmin, xmax, ymin, ymax); - INSERT INTO boxes VALUES(1, 1.0, 3.0, 2.0, 4.0); - - Constructing a virtual r-tree table creates the following three - real tables in the database to store the data structure: - - _node - _rowid - _parent - - Dropping or modifying the contents of these tables directly will - corrupt the r-tree structure. To delete an r-tree from a database, - use a regular DROP TABLE statement: - - DROP TABLE ; - - Dropping the main r-tree table automatically drops the automatically - created tables. - - 1.2 Data Manipulation (INSERT, UPDATE, DELETE). - - The usual INSERT, UPDATE or DELETE syntax is used to manipulate data - stored in an r-tree table. Please note the following: - - * Inserting a NULL value into the primary key column has the - same effect as inserting a NULL into an INTEGER PRIMARY KEY - column of a regular table. The system automatically assigns - an unused integer key value to the new record. Usually, this - is one greater than the largest primary key value currently - present in the table. - - * Attempting to insert a duplicate primary key value fails with - an SQLITE_CONSTRAINT error. - - * Attempting to insert or modify a record such that the value - stored in the (N*2)th column is greater than that stored in - the (N*2+1)th column fails with an SQLITE_CONSTRAINT error. - - * When a record is inserted, values are always converted to - the required type (64-bit integer or 32-bit real) as if they - were part of an SQL CAST expression. Non-numeric strings are - converted to zero. - - 1.3 Queries. - - R-tree tables may be queried using all of the same SQL syntax supported - by regular tables. However, some query patterns are more efficient - than others. - - R-trees support fast lookup by primary key value (O(logN), like - regular tables). - - Any combination of equality and range (<, <=, >, >=) constraints - on spatial data columns may be used to optimize other queries. This - is the key advantage to using r-tree tables instead of creating - indices on regular tables. - - 1.4 Introspection and Analysis. - - TODO: Describe rtreenode() and rtreedepth() functions. - - -2. COMPILATION AND USAGE - - The easiest way to compile and use the RTREE extension is to build - and use it as a dynamically loadable SQLite extension. To do this - using gcc on *nix: - - gcc -shared rtree.c -o libSqliteRtree.so - - You may need to add "-I" flags so that gcc can find sqlite3ext.h - and sqlite3.h. The resulting shared lib, libSqliteRtree.so, may be - loaded into sqlite in the same way as any other dynamicly loadable - extension. - - -3. REFERENCES - - [1] Atonin Guttman, "R-trees - A Dynamic Index Structure For Spatial - Searching", University of California Berkeley, 1984. - - [2] Norbert Beckmann, Hans-Peter Kriegel, Ralf Schneider, Bernhard Seeger, - "The R*-tree: An Efficient and Robust Access Method for Points and - Rectangles", Universitaet Bremen, 1990. diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree.c deleted file mode 100644 index ad0b0f1f5b..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree.c +++ /dev/null @@ -1,3285 +0,0 @@ -/* -** 2001 September 15 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file contains code for implementations of the r-tree and r*-tree -** algorithms packaged as an SQLite virtual table module. -*/ - -/* -** Database Format of R-Tree Tables -** -------------------------------- -** -** The data structure for a single virtual r-tree table is stored in three -** native SQLite tables declared as follows. In each case, the '%' character -** in the table name is replaced with the user-supplied name of the r-tree -** table. -** -** CREATE TABLE %_node(nodeno INTEGER PRIMARY KEY, data BLOB) -** CREATE TABLE %_parent(nodeno INTEGER PRIMARY KEY, parentnode INTEGER) -** CREATE TABLE %_rowid(rowid INTEGER PRIMARY KEY, nodeno INTEGER) -** -** The data for each node of the r-tree structure is stored in the %_node -** table. For each node that is not the root node of the r-tree, there is -** an entry in the %_parent table associating the node with its parent. -** And for each row of data in the table, there is an entry in the %_rowid -** table that maps from the entries rowid to the id of the node that it -** is stored on. -** -** The root node of an r-tree always exists, even if the r-tree table is -** empty. The nodeno of the root node is always 1. All other nodes in the -** table must be the same size as the root node. The content of each node -** is formatted as follows: -** -** 1. If the node is the root node (node 1), then the first 2 bytes -** of the node contain the tree depth as a big-endian integer. -** For non-root nodes, the first 2 bytes are left unused. -** -** 2. The next 2 bytes contain the number of entries currently -** stored in the node. -** -** 3. The remainder of the node contains the node entries. Each entry -** consists of a single 8-byte integer followed by an even number -** of 4-byte coordinates. For leaf nodes the integer is the rowid -** of a record. For internal nodes it is the node number of a -** child page. -*/ - -#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_RTREE) - -/* -** This file contains an implementation of a couple of different variants -** of the r-tree algorithm. See the README file for further details. The -** same data-structure is used for all, but the algorithms for insert and -** delete operations vary. The variants used are selected at compile time -** by defining the following symbols: -*/ - -/* Either, both or none of the following may be set to activate -** r*tree variant algorithms. -*/ -#define VARIANT_RSTARTREE_CHOOSESUBTREE 0 -#define VARIANT_RSTARTREE_REINSERT 1 - -/* -** Exactly one of the following must be set to 1. -*/ -#define VARIANT_GUTTMAN_QUADRATIC_SPLIT 0 -#define VARIANT_GUTTMAN_LINEAR_SPLIT 0 -#define VARIANT_RSTARTREE_SPLIT 1 - -#define VARIANT_GUTTMAN_SPLIT \ - (VARIANT_GUTTMAN_LINEAR_SPLIT||VARIANT_GUTTMAN_QUADRATIC_SPLIT) - -#if VARIANT_GUTTMAN_QUADRATIC_SPLIT - #define PickNext QuadraticPickNext - #define PickSeeds QuadraticPickSeeds - #define AssignCells splitNodeGuttman -#endif -#if VARIANT_GUTTMAN_LINEAR_SPLIT - #define PickNext LinearPickNext - #define PickSeeds LinearPickSeeds - #define AssignCells splitNodeGuttman -#endif -#if VARIANT_RSTARTREE_SPLIT - #define AssignCells splitNodeStartree -#endif - -#if !defined(NDEBUG) && !defined(SQLITE_DEBUG) -# define NDEBUG 1 -#endif - -#ifndef SQLITE_CORE - #include "sqlite3ext.h" - SQLITE_EXTENSION_INIT1 -#else - #include "sqlite3.h" -#endif - -#include -#include - -#ifndef SQLITE_AMALGAMATION -#include "sqlite3rtree.h" -typedef sqlite3_int64 i64; -typedef unsigned char u8; -typedef unsigned int u32; -#endif - -/* The following macro is used to suppress compiler warnings. -*/ -#ifndef UNUSED_PARAMETER -# define UNUSED_PARAMETER(x) (void)(x) -#endif - -typedef struct Rtree Rtree; -typedef struct RtreeCursor RtreeCursor; -typedef struct RtreeNode RtreeNode; -typedef struct RtreeCell RtreeCell; -typedef struct RtreeConstraint RtreeConstraint; -typedef struct RtreeMatchArg RtreeMatchArg; -typedef struct RtreeGeomCallback RtreeGeomCallback; -typedef union RtreeCoord RtreeCoord; - -/* The rtree may have between 1 and RTREE_MAX_DIMENSIONS dimensions. */ -#define RTREE_MAX_DIMENSIONS 5 - -/* Size of hash table Rtree.aHash. This hash table is not expected to -** ever contain very many entries, so a fixed number of buckets is -** used. -*/ -#define HASHSIZE 128 - -/* -** An rtree virtual-table object. -*/ -struct Rtree { - sqlite3_vtab base; - sqlite3 *db; /* Host database connection */ - int iNodeSize; /* Size in bytes of each node in the node table */ - int nDim; /* Number of dimensions */ - int nBytesPerCell; /* Bytes consumed per cell */ - int iDepth; /* Current depth of the r-tree structure */ - char *zDb; /* Name of database containing r-tree table */ - char *zName; /* Name of r-tree table */ - RtreeNode *aHash[HASHSIZE]; /* Hash table of in-memory nodes. */ - int nBusy; /* Current number of users of this structure */ - - /* List of nodes removed during a CondenseTree operation. List is - ** linked together via the pointer normally used for hash chains - - ** RtreeNode.pNext. RtreeNode.iNode stores the depth of the sub-tree - ** headed by the node (leaf nodes have RtreeNode.iNode==0). - */ - RtreeNode *pDeleted; - int iReinsertHeight; /* Height of sub-trees Reinsert() has run on */ - - /* Statements to read/write/delete a record from xxx_node */ - sqlite3_stmt *pReadNode; - sqlite3_stmt *pWriteNode; - sqlite3_stmt *pDeleteNode; - - /* Statements to read/write/delete a record from xxx_rowid */ - sqlite3_stmt *pReadRowid; - sqlite3_stmt *pWriteRowid; - sqlite3_stmt *pDeleteRowid; - - /* Statements to read/write/delete a record from xxx_parent */ - sqlite3_stmt *pReadParent; - sqlite3_stmt *pWriteParent; - sqlite3_stmt *pDeleteParent; - - int eCoordType; -}; - -/* Possible values for eCoordType: */ -#define RTREE_COORD_REAL32 0 -#define RTREE_COORD_INT32 1 - -/* -** The minimum number of cells allowed for a node is a third of the -** maximum. In Gutman's notation: -** -** m = M/3 -** -** If an R*-tree "Reinsert" operation is required, the same number of -** cells are removed from the overfull node and reinserted into the tree. -*/ -#define RTREE_MINCELLS(p) ((((p)->iNodeSize-4)/(p)->nBytesPerCell)/3) -#define RTREE_REINSERT(p) RTREE_MINCELLS(p) -#define RTREE_MAXCELLS 51 - -/* -** The smallest possible node-size is (512-64)==448 bytes. And the largest -** supported cell size is 48 bytes (8 byte rowid + ten 4 byte coordinates). -** Therefore all non-root nodes must contain at least 3 entries. Since -** 2^40 is greater than 2^64, an r-tree structure always has a depth of -** 40 or less. -*/ -#define RTREE_MAX_DEPTH 40 - -/* -** An rtree cursor object. -*/ -struct RtreeCursor { - sqlite3_vtab_cursor base; - RtreeNode *pNode; /* Node cursor is currently pointing at */ - int iCell; /* Index of current cell in pNode */ - int iStrategy; /* Copy of idxNum search parameter */ - int nConstraint; /* Number of entries in aConstraint */ - RtreeConstraint *aConstraint; /* Search constraints. */ -}; - -union RtreeCoord { - float f; - int i; -}; - -/* -** The argument is an RtreeCoord. Return the value stored within the RtreeCoord -** formatted as a double. This macro assumes that local variable pRtree points -** to the Rtree structure associated with the RtreeCoord. -*/ -#define DCOORD(coord) ( \ - (pRtree->eCoordType==RTREE_COORD_REAL32) ? \ - ((double)coord.f) : \ - ((double)coord.i) \ -) - -/* -** A search constraint. -*/ -struct RtreeConstraint { - int iCoord; /* Index of constrained coordinate */ - int op; /* Constraining operation */ - double rValue; /* Constraint value. */ - int (*xGeom)(sqlite3_rtree_geometry *, int, double *, int *); - sqlite3_rtree_geometry *pGeom; /* Constraint callback argument for a MATCH */ -}; - -/* Possible values for RtreeConstraint.op */ -#define RTREE_EQ 0x41 -#define RTREE_LE 0x42 -#define RTREE_LT 0x43 -#define RTREE_GE 0x44 -#define RTREE_GT 0x45 -#define RTREE_MATCH 0x46 - -/* -** An rtree structure node. -*/ -struct RtreeNode { - RtreeNode *pParent; /* Parent node */ - i64 iNode; - int nRef; - int isDirty; - u8 *zData; - RtreeNode *pNext; /* Next node in this hash chain */ -}; -#define NCELL(pNode) readInt16(&(pNode)->zData[2]) - -/* -** Structure to store a deserialized rtree record. -*/ -struct RtreeCell { - i64 iRowid; - RtreeCoord aCoord[RTREE_MAX_DIMENSIONS*2]; -}; - - -/* -** Value for the first field of every RtreeMatchArg object. The MATCH -** operator tests that the first field of a blob operand matches this -** value to avoid operating on invalid blobs (which could cause a segfault). -*/ -#define RTREE_GEOMETRY_MAGIC 0x891245AB - -/* -** An instance of this structure must be supplied as a blob argument to -** the right-hand-side of an SQL MATCH operator used to constrain an -** r-tree query. -*/ -struct RtreeMatchArg { - u32 magic; /* Always RTREE_GEOMETRY_MAGIC */ - int (*xGeom)(sqlite3_rtree_geometry *, int, double *, int *); - void *pContext; - int nParam; - double aParam[1]; -}; - -/* -** When a geometry callback is created (see sqlite3_rtree_geometry_callback), -** a single instance of the following structure is allocated. It is used -** as the context for the user-function created by by s_r_g_c(). The object -** is eventually deleted by the destructor mechanism provided by -** sqlite3_create_function_v2() (which is called by s_r_g_c() to create -** the geometry callback function). -*/ -struct RtreeGeomCallback { - int (*xGeom)(sqlite3_rtree_geometry *, int, double *, int *); - void *pContext; -}; - -#ifndef MAX -# define MAX(x,y) ((x) < (y) ? (y) : (x)) -#endif -#ifndef MIN -# define MIN(x,y) ((x) > (y) ? (y) : (x)) -#endif - -/* -** Functions to deserialize a 16 bit integer, 32 bit real number and -** 64 bit integer. The deserialized value is returned. -*/ -static int readInt16(u8 *p){ - return (p[0]<<8) + p[1]; -} -static void readCoord(u8 *p, RtreeCoord *pCoord){ - u32 i = ( - (((u32)p[0]) << 24) + - (((u32)p[1]) << 16) + - (((u32)p[2]) << 8) + - (((u32)p[3]) << 0) - ); - *(u32 *)pCoord = i; -} -static i64 readInt64(u8 *p){ - return ( - (((i64)p[0]) << 56) + - (((i64)p[1]) << 48) + - (((i64)p[2]) << 40) + - (((i64)p[3]) << 32) + - (((i64)p[4]) << 24) + - (((i64)p[5]) << 16) + - (((i64)p[6]) << 8) + - (((i64)p[7]) << 0) - ); -} - -/* -** Functions to serialize a 16 bit integer, 32 bit real number and -** 64 bit integer. The value returned is the number of bytes written -** to the argument buffer (always 2, 4 and 8 respectively). -*/ -static int writeInt16(u8 *p, int i){ - p[0] = (i>> 8)&0xFF; - p[1] = (i>> 0)&0xFF; - return 2; -} -static int writeCoord(u8 *p, RtreeCoord *pCoord){ - u32 i; - assert( sizeof(RtreeCoord)==4 ); - assert( sizeof(u32)==4 ); - i = *(u32 *)pCoord; - p[0] = (i>>24)&0xFF; - p[1] = (i>>16)&0xFF; - p[2] = (i>> 8)&0xFF; - p[3] = (i>> 0)&0xFF; - return 4; -} -static int writeInt64(u8 *p, i64 i){ - p[0] = (i>>56)&0xFF; - p[1] = (i>>48)&0xFF; - p[2] = (i>>40)&0xFF; - p[3] = (i>>32)&0xFF; - p[4] = (i>>24)&0xFF; - p[5] = (i>>16)&0xFF; - p[6] = (i>> 8)&0xFF; - p[7] = (i>> 0)&0xFF; - return 8; -} - -/* -** Increment the reference count of node p. -*/ -static void nodeReference(RtreeNode *p){ - if( p ){ - p->nRef++; - } -} - -/* -** Clear the content of node p (set all bytes to 0x00). -*/ -static void nodeZero(Rtree *pRtree, RtreeNode *p){ - memset(&p->zData[2], 0, pRtree->iNodeSize-2); - p->isDirty = 1; -} - -/* -** Given a node number iNode, return the corresponding key to use -** in the Rtree.aHash table. -*/ -static int nodeHash(i64 iNode){ - return ( - (iNode>>56) ^ (iNode>>48) ^ (iNode>>40) ^ (iNode>>32) ^ - (iNode>>24) ^ (iNode>>16) ^ (iNode>> 8) ^ (iNode>> 0) - ) % HASHSIZE; -} - -/* -** Search the node hash table for node iNode. If found, return a pointer -** to it. Otherwise, return 0. -*/ -static RtreeNode *nodeHashLookup(Rtree *pRtree, i64 iNode){ - RtreeNode *p; - for(p=pRtree->aHash[nodeHash(iNode)]; p && p->iNode!=iNode; p=p->pNext); - return p; -} - -/* -** Add node pNode to the node hash table. -*/ -static void nodeHashInsert(Rtree *pRtree, RtreeNode *pNode){ - int iHash; - assert( pNode->pNext==0 ); - iHash = nodeHash(pNode->iNode); - pNode->pNext = pRtree->aHash[iHash]; - pRtree->aHash[iHash] = pNode; -} - -/* -** Remove node pNode from the node hash table. -*/ -static void nodeHashDelete(Rtree *pRtree, RtreeNode *pNode){ - RtreeNode **pp; - if( pNode->iNode!=0 ){ - pp = &pRtree->aHash[nodeHash(pNode->iNode)]; - for( ; (*pp)!=pNode; pp = &(*pp)->pNext){ assert(*pp); } - *pp = pNode->pNext; - pNode->pNext = 0; - } -} - -/* -** Allocate and return new r-tree node. Initially, (RtreeNode.iNode==0), -** indicating that node has not yet been assigned a node number. It is -** assigned a node number when nodeWrite() is called to write the -** node contents out to the database. -*/ -static RtreeNode *nodeNew(Rtree *pRtree, RtreeNode *pParent){ - RtreeNode *pNode; - pNode = (RtreeNode *)sqlite3_malloc(sizeof(RtreeNode) + pRtree->iNodeSize); - if( pNode ){ - memset(pNode, 0, sizeof(RtreeNode) + pRtree->iNodeSize); - pNode->zData = (u8 *)&pNode[1]; - pNode->nRef = 1; - pNode->pParent = pParent; - pNode->isDirty = 1; - nodeReference(pParent); - } - return pNode; -} - -/* -** Obtain a reference to an r-tree node. -*/ -static int -nodeAcquire( - Rtree *pRtree, /* R-tree structure */ - i64 iNode, /* Node number to load */ - RtreeNode *pParent, /* Either the parent node or NULL */ - RtreeNode **ppNode /* OUT: Acquired node */ -){ - int rc; - int rc2 = SQLITE_OK; - RtreeNode *pNode; - - /* Check if the requested node is already in the hash table. If so, - ** increase its reference count and return it. - */ - if( (pNode = nodeHashLookup(pRtree, iNode)) ){ - assert( !pParent || !pNode->pParent || pNode->pParent==pParent ); - if( pParent && !pNode->pParent ){ - nodeReference(pParent); - pNode->pParent = pParent; - } - pNode->nRef++; - *ppNode = pNode; - return SQLITE_OK; - } - - sqlite3_bind_int64(pRtree->pReadNode, 1, iNode); - rc = sqlite3_step(pRtree->pReadNode); - if( rc==SQLITE_ROW ){ - const u8 *zBlob = sqlite3_column_blob(pRtree->pReadNode, 0); - if( pRtree->iNodeSize==sqlite3_column_bytes(pRtree->pReadNode, 0) ){ - pNode = (RtreeNode *)sqlite3_malloc(sizeof(RtreeNode)+pRtree->iNodeSize); - if( !pNode ){ - rc2 = SQLITE_NOMEM; - }else{ - pNode->pParent = pParent; - pNode->zData = (u8 *)&pNode[1]; - pNode->nRef = 1; - pNode->iNode = iNode; - pNode->isDirty = 0; - pNode->pNext = 0; - memcpy(pNode->zData, zBlob, pRtree->iNodeSize); - nodeReference(pParent); - } - } - } - rc = sqlite3_reset(pRtree->pReadNode); - if( rc==SQLITE_OK ) rc = rc2; - - /* If the root node was just loaded, set pRtree->iDepth to the height - ** of the r-tree structure. A height of zero means all data is stored on - ** the root node. A height of one means the children of the root node - ** are the leaves, and so on. If the depth as specified on the root node - ** is greater than RTREE_MAX_DEPTH, the r-tree structure must be corrupt. - */ - if( pNode && iNode==1 ){ - pRtree->iDepth = readInt16(pNode->zData); - if( pRtree->iDepth>RTREE_MAX_DEPTH ){ - rc = SQLITE_CORRUPT_VTAB; - } - } - - /* If no error has occurred so far, check if the "number of entries" - ** field on the node is too large. If so, set the return code to - ** SQLITE_CORRUPT_VTAB. - */ - if( pNode && rc==SQLITE_OK ){ - if( NCELL(pNode)>((pRtree->iNodeSize-4)/pRtree->nBytesPerCell) ){ - rc = SQLITE_CORRUPT_VTAB; - } - } - - if( rc==SQLITE_OK ){ - if( pNode!=0 ){ - nodeHashInsert(pRtree, pNode); - }else{ - rc = SQLITE_CORRUPT_VTAB; - } - *ppNode = pNode; - }else{ - sqlite3_free(pNode); - *ppNode = 0; - } - - return rc; -} - -/* -** Overwrite cell iCell of node pNode with the contents of pCell. -*/ -static void nodeOverwriteCell( - Rtree *pRtree, - RtreeNode *pNode, - RtreeCell *pCell, - int iCell -){ - int ii; - u8 *p = &pNode->zData[4 + pRtree->nBytesPerCell*iCell]; - p += writeInt64(p, pCell->iRowid); - for(ii=0; ii<(pRtree->nDim*2); ii++){ - p += writeCoord(p, &pCell->aCoord[ii]); - } - pNode->isDirty = 1; -} - -/* -** Remove cell the cell with index iCell from node pNode. -*/ -static void nodeDeleteCell(Rtree *pRtree, RtreeNode *pNode, int iCell){ - u8 *pDst = &pNode->zData[4 + pRtree->nBytesPerCell*iCell]; - u8 *pSrc = &pDst[pRtree->nBytesPerCell]; - int nByte = (NCELL(pNode) - iCell - 1) * pRtree->nBytesPerCell; - memmove(pDst, pSrc, nByte); - writeInt16(&pNode->zData[2], NCELL(pNode)-1); - pNode->isDirty = 1; -} - -/* -** Insert the contents of cell pCell into node pNode. If the insert -** is successful, return SQLITE_OK. -** -** If there is not enough free space in pNode, return SQLITE_FULL. -*/ -static int -nodeInsertCell( - Rtree *pRtree, - RtreeNode *pNode, - RtreeCell *pCell -){ - int nCell; /* Current number of cells in pNode */ - int nMaxCell; /* Maximum number of cells for pNode */ - - nMaxCell = (pRtree->iNodeSize-4)/pRtree->nBytesPerCell; - nCell = NCELL(pNode); - - assert( nCell<=nMaxCell ); - if( nCellzData[2], nCell+1); - pNode->isDirty = 1; - } - - return (nCell==nMaxCell); -} - -/* -** If the node is dirty, write it out to the database. -*/ -static int -nodeWrite(Rtree *pRtree, RtreeNode *pNode){ - int rc = SQLITE_OK; - if( pNode->isDirty ){ - sqlite3_stmt *p = pRtree->pWriteNode; - if( pNode->iNode ){ - sqlite3_bind_int64(p, 1, pNode->iNode); - }else{ - sqlite3_bind_null(p, 1); - } - sqlite3_bind_blob(p, 2, pNode->zData, pRtree->iNodeSize, SQLITE_STATIC); - sqlite3_step(p); - pNode->isDirty = 0; - rc = sqlite3_reset(p); - if( pNode->iNode==0 && rc==SQLITE_OK ){ - pNode->iNode = sqlite3_last_insert_rowid(pRtree->db); - nodeHashInsert(pRtree, pNode); - } - } - return rc; -} - -/* -** Release a reference to a node. If the node is dirty and the reference -** count drops to zero, the node data is written to the database. -*/ -static int -nodeRelease(Rtree *pRtree, RtreeNode *pNode){ - int rc = SQLITE_OK; - if( pNode ){ - assert( pNode->nRef>0 ); - pNode->nRef--; - if( pNode->nRef==0 ){ - if( pNode->iNode==1 ){ - pRtree->iDepth = -1; - } - if( pNode->pParent ){ - rc = nodeRelease(pRtree, pNode->pParent); - } - if( rc==SQLITE_OK ){ - rc = nodeWrite(pRtree, pNode); - } - nodeHashDelete(pRtree, pNode); - sqlite3_free(pNode); - } - } - return rc; -} - -/* -** Return the 64-bit integer value associated with cell iCell of -** node pNode. If pNode is a leaf node, this is a rowid. If it is -** an internal node, then the 64-bit integer is a child page number. -*/ -static i64 nodeGetRowid( - Rtree *pRtree, - RtreeNode *pNode, - int iCell -){ - assert( iCellzData[4 + pRtree->nBytesPerCell*iCell]); -} - -/* -** Return coordinate iCoord from cell iCell in node pNode. -*/ -static void nodeGetCoord( - Rtree *pRtree, - RtreeNode *pNode, - int iCell, - int iCoord, - RtreeCoord *pCoord /* Space to write result to */ -){ - readCoord(&pNode->zData[12 + pRtree->nBytesPerCell*iCell + 4*iCoord], pCoord); -} - -/* -** Deserialize cell iCell of node pNode. Populate the structure pointed -** to by pCell with the results. -*/ -static void nodeGetCell( - Rtree *pRtree, - RtreeNode *pNode, - int iCell, - RtreeCell *pCell -){ - int ii; - pCell->iRowid = nodeGetRowid(pRtree, pNode, iCell); - for(ii=0; iinDim*2; ii++){ - nodeGetCoord(pRtree, pNode, iCell, ii, &pCell->aCoord[ii]); - } -} - - -/* Forward declaration for the function that does the work of -** the virtual table module xCreate() and xConnect() methods. -*/ -static int rtreeInit( - sqlite3 *, void *, int, const char *const*, sqlite3_vtab **, char **, int -); - -/* -** Rtree virtual table module xCreate method. -*/ -static int rtreeCreate( - sqlite3 *db, - void *pAux, - int argc, const char *const*argv, - sqlite3_vtab **ppVtab, - char **pzErr -){ - return rtreeInit(db, pAux, argc, argv, ppVtab, pzErr, 1); -} - -/* -** Rtree virtual table module xConnect method. -*/ -static int rtreeConnect( - sqlite3 *db, - void *pAux, - int argc, const char *const*argv, - sqlite3_vtab **ppVtab, - char **pzErr -){ - return rtreeInit(db, pAux, argc, argv, ppVtab, pzErr, 0); -} - -/* -** Increment the r-tree reference count. -*/ -static void rtreeReference(Rtree *pRtree){ - pRtree->nBusy++; -} - -/* -** Decrement the r-tree reference count. When the reference count reaches -** zero the structure is deleted. -*/ -static void rtreeRelease(Rtree *pRtree){ - pRtree->nBusy--; - if( pRtree->nBusy==0 ){ - sqlite3_finalize(pRtree->pReadNode); - sqlite3_finalize(pRtree->pWriteNode); - sqlite3_finalize(pRtree->pDeleteNode); - sqlite3_finalize(pRtree->pReadRowid); - sqlite3_finalize(pRtree->pWriteRowid); - sqlite3_finalize(pRtree->pDeleteRowid); - sqlite3_finalize(pRtree->pReadParent); - sqlite3_finalize(pRtree->pWriteParent); - sqlite3_finalize(pRtree->pDeleteParent); - sqlite3_free(pRtree); - } -} - -/* -** Rtree virtual table module xDisconnect method. -*/ -static int rtreeDisconnect(sqlite3_vtab *pVtab){ - rtreeRelease((Rtree *)pVtab); - return SQLITE_OK; -} - -/* -** Rtree virtual table module xDestroy method. -*/ -static int rtreeDestroy(sqlite3_vtab *pVtab){ - Rtree *pRtree = (Rtree *)pVtab; - int rc; - char *zCreate = sqlite3_mprintf( - "DROP TABLE '%q'.'%q_node';" - "DROP TABLE '%q'.'%q_rowid';" - "DROP TABLE '%q'.'%q_parent';", - pRtree->zDb, pRtree->zName, - pRtree->zDb, pRtree->zName, - pRtree->zDb, pRtree->zName - ); - if( !zCreate ){ - rc = SQLITE_NOMEM; - }else{ - rc = sqlite3_exec(pRtree->db, zCreate, 0, 0, 0); - sqlite3_free(zCreate); - } - if( rc==SQLITE_OK ){ - rtreeRelease(pRtree); - } - - return rc; -} - -/* -** Rtree virtual table module xOpen method. -*/ -static int rtreeOpen(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor){ - int rc = SQLITE_NOMEM; - RtreeCursor *pCsr; - - pCsr = (RtreeCursor *)sqlite3_malloc(sizeof(RtreeCursor)); - if( pCsr ){ - memset(pCsr, 0, sizeof(RtreeCursor)); - pCsr->base.pVtab = pVTab; - rc = SQLITE_OK; - } - *ppCursor = (sqlite3_vtab_cursor *)pCsr; - - return rc; -} - - -/* -** Free the RtreeCursor.aConstraint[] array and its contents. -*/ -static void freeCursorConstraints(RtreeCursor *pCsr){ - if( pCsr->aConstraint ){ - int i; /* Used to iterate through constraint array */ - for(i=0; inConstraint; i++){ - sqlite3_rtree_geometry *pGeom = pCsr->aConstraint[i].pGeom; - if( pGeom ){ - if( pGeom->xDelUser ) pGeom->xDelUser(pGeom->pUser); - sqlite3_free(pGeom); - } - } - sqlite3_free(pCsr->aConstraint); - pCsr->aConstraint = 0; - } -} - -/* -** Rtree virtual table module xClose method. -*/ -static int rtreeClose(sqlite3_vtab_cursor *cur){ - Rtree *pRtree = (Rtree *)(cur->pVtab); - int rc; - RtreeCursor *pCsr = (RtreeCursor *)cur; - freeCursorConstraints(pCsr); - rc = nodeRelease(pRtree, pCsr->pNode); - sqlite3_free(pCsr); - return rc; -} - -/* -** Rtree virtual table module xEof method. -** -** Return non-zero if the cursor does not currently point to a valid -** record (i.e if the scan has finished), or zero otherwise. -*/ -static int rtreeEof(sqlite3_vtab_cursor *cur){ - RtreeCursor *pCsr = (RtreeCursor *)cur; - return (pCsr->pNode==0); -} - -/* -** The r-tree constraint passed as the second argument to this function is -** guaranteed to be a MATCH constraint. -*/ -static int testRtreeGeom( - Rtree *pRtree, /* R-Tree object */ - RtreeConstraint *pConstraint, /* MATCH constraint to test */ - RtreeCell *pCell, /* Cell to test */ - int *pbRes /* OUT: Test result */ -){ - int i; - double aCoord[RTREE_MAX_DIMENSIONS*2]; - int nCoord = pRtree->nDim*2; - - assert( pConstraint->op==RTREE_MATCH ); - assert( pConstraint->pGeom ); - - for(i=0; iaCoord[i]); - } - return pConstraint->xGeom(pConstraint->pGeom, nCoord, aCoord, pbRes); -} - -/* -** Cursor pCursor currently points to a cell in a non-leaf page. -** Set *pbEof to true if the sub-tree headed by the cell is filtered -** (excluded) by the constraints in the pCursor->aConstraint[] -** array, or false otherwise. -** -** Return SQLITE_OK if successful or an SQLite error code if an error -** occurs within a geometry callback. -*/ -static int testRtreeCell(Rtree *pRtree, RtreeCursor *pCursor, int *pbEof){ - RtreeCell cell; - int ii; - int bRes = 0; - int rc = SQLITE_OK; - - nodeGetCell(pRtree, pCursor->pNode, pCursor->iCell, &cell); - for(ii=0; bRes==0 && iinConstraint; ii++){ - RtreeConstraint *p = &pCursor->aConstraint[ii]; - double cell_min = DCOORD(cell.aCoord[(p->iCoord>>1)*2]); - double cell_max = DCOORD(cell.aCoord[(p->iCoord>>1)*2+1]); - - assert(p->op==RTREE_LE || p->op==RTREE_LT || p->op==RTREE_GE - || p->op==RTREE_GT || p->op==RTREE_EQ || p->op==RTREE_MATCH - ); - - switch( p->op ){ - case RTREE_LE: case RTREE_LT: - bRes = p->rValuerValue>cell_max; - break; - - case RTREE_EQ: - bRes = (p->rValue>cell_max || p->rValueop==RTREE_MATCH ); - rc = testRtreeGeom(pRtree, p, &cell, &bRes); - bRes = !bRes; - break; - } - } - } - - *pbEof = bRes; - return rc; -} - -/* -** Test if the cell that cursor pCursor currently points to -** would be filtered (excluded) by the constraints in the -** pCursor->aConstraint[] array. If so, set *pbEof to true before -** returning. If the cell is not filtered (excluded) by the constraints, -** set pbEof to zero. -** -** Return SQLITE_OK if successful or an SQLite error code if an error -** occurs within a geometry callback. -** -** This function assumes that the cell is part of a leaf node. -*/ -static int testRtreeEntry(Rtree *pRtree, RtreeCursor *pCursor, int *pbEof){ - RtreeCell cell; - int ii; - *pbEof = 0; - - nodeGetCell(pRtree, pCursor->pNode, pCursor->iCell, &cell); - for(ii=0; iinConstraint; ii++){ - RtreeConstraint *p = &pCursor->aConstraint[ii]; - double coord = DCOORD(cell.aCoord[p->iCoord]); - int res; - assert(p->op==RTREE_LE || p->op==RTREE_LT || p->op==RTREE_GE - || p->op==RTREE_GT || p->op==RTREE_EQ || p->op==RTREE_MATCH - ); - switch( p->op ){ - case RTREE_LE: res = (coord<=p->rValue); break; - case RTREE_LT: res = (coordrValue); break; - case RTREE_GE: res = (coord>=p->rValue); break; - case RTREE_GT: res = (coord>p->rValue); break; - case RTREE_EQ: res = (coord==p->rValue); break; - default: { - int rc; - assert( p->op==RTREE_MATCH ); - rc = testRtreeGeom(pRtree, p, &cell, &res); - if( rc!=SQLITE_OK ){ - return rc; - } - break; - } - } - - if( !res ){ - *pbEof = 1; - return SQLITE_OK; - } - } - - return SQLITE_OK; -} - -/* -** Cursor pCursor currently points at a node that heads a sub-tree of -** height iHeight (if iHeight==0, then the node is a leaf). Descend -** to point to the left-most cell of the sub-tree that matches the -** configured constraints. -*/ -static int descendToCell( - Rtree *pRtree, - RtreeCursor *pCursor, - int iHeight, - int *pEof /* OUT: Set to true if cannot descend */ -){ - int isEof; - int rc; - int ii; - RtreeNode *pChild; - sqlite3_int64 iRowid; - - RtreeNode *pSavedNode = pCursor->pNode; - int iSavedCell = pCursor->iCell; - - assert( iHeight>=0 ); - - if( iHeight==0 ){ - rc = testRtreeEntry(pRtree, pCursor, &isEof); - }else{ - rc = testRtreeCell(pRtree, pCursor, &isEof); - } - if( rc!=SQLITE_OK || isEof || iHeight==0 ){ - goto descend_to_cell_out; - } - - iRowid = nodeGetRowid(pRtree, pCursor->pNode, pCursor->iCell); - rc = nodeAcquire(pRtree, iRowid, pCursor->pNode, &pChild); - if( rc!=SQLITE_OK ){ - goto descend_to_cell_out; - } - - nodeRelease(pRtree, pCursor->pNode); - pCursor->pNode = pChild; - isEof = 1; - for(ii=0; isEof && iiiCell = ii; - rc = descendToCell(pRtree, pCursor, iHeight-1, &isEof); - if( rc!=SQLITE_OK ){ - goto descend_to_cell_out; - } - } - - if( isEof ){ - assert( pCursor->pNode==pChild ); - nodeReference(pSavedNode); - nodeRelease(pRtree, pChild); - pCursor->pNode = pSavedNode; - pCursor->iCell = iSavedCell; - } - -descend_to_cell_out: - *pEof = isEof; - return rc; -} - -/* -** One of the cells in node pNode is guaranteed to have a 64-bit -** integer value equal to iRowid. Return the index of this cell. -*/ -static int nodeRowidIndex( - Rtree *pRtree, - RtreeNode *pNode, - i64 iRowid, - int *piIndex -){ - int ii; - int nCell = NCELL(pNode); - for(ii=0; iipParent; - if( pParent ){ - return nodeRowidIndex(pRtree, pParent, pNode->iNode, piIndex); - } - *piIndex = -1; - return SQLITE_OK; -} - -/* -** Rtree virtual table module xNext method. -*/ -static int rtreeNext(sqlite3_vtab_cursor *pVtabCursor){ - Rtree *pRtree = (Rtree *)(pVtabCursor->pVtab); - RtreeCursor *pCsr = (RtreeCursor *)pVtabCursor; - int rc = SQLITE_OK; - - /* RtreeCursor.pNode must not be NULL. If is is NULL, then this cursor is - ** already at EOF. It is against the rules to call the xNext() method of - ** a cursor that has already reached EOF. - */ - assert( pCsr->pNode ); - - if( pCsr->iStrategy==1 ){ - /* This "scan" is a direct lookup by rowid. There is no next entry. */ - nodeRelease(pRtree, pCsr->pNode); - pCsr->pNode = 0; - }else{ - /* Move to the next entry that matches the configured constraints. */ - int iHeight = 0; - while( pCsr->pNode ){ - RtreeNode *pNode = pCsr->pNode; - int nCell = NCELL(pNode); - for(pCsr->iCell++; pCsr->iCelliCell++){ - int isEof; - rc = descendToCell(pRtree, pCsr, iHeight, &isEof); - if( rc!=SQLITE_OK || !isEof ){ - return rc; - } - } - pCsr->pNode = pNode->pParent; - rc = nodeParentIndex(pRtree, pNode, &pCsr->iCell); - if( rc!=SQLITE_OK ){ - return rc; - } - nodeReference(pCsr->pNode); - nodeRelease(pRtree, pNode); - iHeight++; - } - } - - return rc; -} - -/* -** Rtree virtual table module xRowid method. -*/ -static int rtreeRowid(sqlite3_vtab_cursor *pVtabCursor, sqlite_int64 *pRowid){ - Rtree *pRtree = (Rtree *)pVtabCursor->pVtab; - RtreeCursor *pCsr = (RtreeCursor *)pVtabCursor; - - assert(pCsr->pNode); - *pRowid = nodeGetRowid(pRtree, pCsr->pNode, pCsr->iCell); - - return SQLITE_OK; -} - -/* -** Rtree virtual table module xColumn method. -*/ -static int rtreeColumn(sqlite3_vtab_cursor *cur, sqlite3_context *ctx, int i){ - Rtree *pRtree = (Rtree *)cur->pVtab; - RtreeCursor *pCsr = (RtreeCursor *)cur; - - if( i==0 ){ - i64 iRowid = nodeGetRowid(pRtree, pCsr->pNode, pCsr->iCell); - sqlite3_result_int64(ctx, iRowid); - }else{ - RtreeCoord c; - nodeGetCoord(pRtree, pCsr->pNode, pCsr->iCell, i-1, &c); - if( pRtree->eCoordType==RTREE_COORD_REAL32 ){ - sqlite3_result_double(ctx, c.f); - }else{ - assert( pRtree->eCoordType==RTREE_COORD_INT32 ); - sqlite3_result_int(ctx, c.i); - } - } - - return SQLITE_OK; -} - -/* -** Use nodeAcquire() to obtain the leaf node containing the record with -** rowid iRowid. If successful, set *ppLeaf to point to the node and -** return SQLITE_OK. If there is no such record in the table, set -** *ppLeaf to 0 and return SQLITE_OK. If an error occurs, set *ppLeaf -** to zero and return an SQLite error code. -*/ -static int findLeafNode(Rtree *pRtree, i64 iRowid, RtreeNode **ppLeaf){ - int rc; - *ppLeaf = 0; - sqlite3_bind_int64(pRtree->pReadRowid, 1, iRowid); - if( sqlite3_step(pRtree->pReadRowid)==SQLITE_ROW ){ - i64 iNode = sqlite3_column_int64(pRtree->pReadRowid, 0); - rc = nodeAcquire(pRtree, iNode, 0, ppLeaf); - sqlite3_reset(pRtree->pReadRowid); - }else{ - rc = sqlite3_reset(pRtree->pReadRowid); - } - return rc; -} - -/* -** This function is called to configure the RtreeConstraint object passed -** as the second argument for a MATCH constraint. The value passed as the -** first argument to this function is the right-hand operand to the MATCH -** operator. -*/ -static int deserializeGeometry(sqlite3_value *pValue, RtreeConstraint *pCons){ - RtreeMatchArg *p; - sqlite3_rtree_geometry *pGeom; - int nBlob; - - /* Check that value is actually a blob. */ - if( !sqlite3_value_type(pValue)==SQLITE_BLOB ) return SQLITE_ERROR; - - /* Check that the blob is roughly the right size. */ - nBlob = sqlite3_value_bytes(pValue); - if( nBlob<(int)sizeof(RtreeMatchArg) - || ((nBlob-sizeof(RtreeMatchArg))%sizeof(double))!=0 - ){ - return SQLITE_ERROR; - } - - pGeom = (sqlite3_rtree_geometry *)sqlite3_malloc( - sizeof(sqlite3_rtree_geometry) + nBlob - ); - if( !pGeom ) return SQLITE_NOMEM; - memset(pGeom, 0, sizeof(sqlite3_rtree_geometry)); - p = (RtreeMatchArg *)&pGeom[1]; - - memcpy(p, sqlite3_value_blob(pValue), nBlob); - if( p->magic!=RTREE_GEOMETRY_MAGIC - || nBlob!=(int)(sizeof(RtreeMatchArg) + (p->nParam-1)*sizeof(double)) - ){ - sqlite3_free(pGeom); - return SQLITE_ERROR; - } - - pGeom->pContext = p->pContext; - pGeom->nParam = p->nParam; - pGeom->aParam = p->aParam; - - pCons->xGeom = p->xGeom; - pCons->pGeom = pGeom; - return SQLITE_OK; -} - -/* -** Rtree virtual table module xFilter method. -*/ -static int rtreeFilter( - sqlite3_vtab_cursor *pVtabCursor, - int idxNum, const char *idxStr, - int argc, sqlite3_value **argv -){ - Rtree *pRtree = (Rtree *)pVtabCursor->pVtab; - RtreeCursor *pCsr = (RtreeCursor *)pVtabCursor; - - RtreeNode *pRoot = 0; - int ii; - int rc = SQLITE_OK; - - rtreeReference(pRtree); - - freeCursorConstraints(pCsr); - pCsr->iStrategy = idxNum; - - if( idxNum==1 ){ - /* Special case - lookup by rowid. */ - RtreeNode *pLeaf; /* Leaf on which the required cell resides */ - i64 iRowid = sqlite3_value_int64(argv[0]); - rc = findLeafNode(pRtree, iRowid, &pLeaf); - pCsr->pNode = pLeaf; - if( pLeaf ){ - assert( rc==SQLITE_OK ); - rc = nodeRowidIndex(pRtree, pLeaf, iRowid, &pCsr->iCell); - } - }else{ - /* Normal case - r-tree scan. Set up the RtreeCursor.aConstraint array - ** with the configured constraints. - */ - if( argc>0 ){ - pCsr->aConstraint = sqlite3_malloc(sizeof(RtreeConstraint)*argc); - pCsr->nConstraint = argc; - if( !pCsr->aConstraint ){ - rc = SQLITE_NOMEM; - }else{ - memset(pCsr->aConstraint, 0, sizeof(RtreeConstraint)*argc); - assert( (idxStr==0 && argc==0) - || (idxStr && (int)strlen(idxStr)==argc*2) ); - for(ii=0; iiaConstraint[ii]; - p->op = idxStr[ii*2]; - p->iCoord = idxStr[ii*2+1]-'a'; - if( p->op==RTREE_MATCH ){ - /* A MATCH operator. The right-hand-side must be a blob that - ** can be cast into an RtreeMatchArg object. One created using - ** an sqlite3_rtree_geometry_callback() SQL user function. - */ - rc = deserializeGeometry(argv[ii], p); - if( rc!=SQLITE_OK ){ - break; - } - }else{ - p->rValue = sqlite3_value_double(argv[ii]); - } - } - } - } - - if( rc==SQLITE_OK ){ - pCsr->pNode = 0; - rc = nodeAcquire(pRtree, 1, 0, &pRoot); - } - if( rc==SQLITE_OK ){ - int isEof = 1; - int nCell = NCELL(pRoot); - pCsr->pNode = pRoot; - for(pCsr->iCell=0; rc==SQLITE_OK && pCsr->iCelliCell++){ - assert( pCsr->pNode==pRoot ); - rc = descendToCell(pRtree, pCsr, pRtree->iDepth, &isEof); - if( !isEof ){ - break; - } - } - if( rc==SQLITE_OK && isEof ){ - assert( pCsr->pNode==pRoot ); - nodeRelease(pRtree, pRoot); - pCsr->pNode = 0; - } - assert( rc!=SQLITE_OK || !pCsr->pNode || pCsr->iCellpNode) ); - } - } - - rtreeRelease(pRtree); - return rc; -} - -/* -** Rtree virtual table module xBestIndex method. There are three -** table scan strategies to choose from (in order from most to -** least desirable): -** -** idxNum idxStr Strategy -** ------------------------------------------------ -** 1 Unused Direct lookup by rowid. -** 2 See below R-tree query or full-table scan. -** ------------------------------------------------ -** -** If strategy 1 is used, then idxStr is not meaningful. If strategy -** 2 is used, idxStr is formatted to contain 2 bytes for each -** constraint used. The first two bytes of idxStr correspond to -** the constraint in sqlite3_index_info.aConstraintUsage[] with -** (argvIndex==1) etc. -** -** The first of each pair of bytes in idxStr identifies the constraint -** operator as follows: -** -** Operator Byte Value -** ---------------------- -** = 0x41 ('A') -** <= 0x42 ('B') -** < 0x43 ('C') -** >= 0x44 ('D') -** > 0x45 ('E') -** MATCH 0x46 ('F') -** ---------------------- -** -** The second of each pair of bytes identifies the coordinate column -** to which the constraint applies. The leftmost coordinate column -** is 'a', the second from the left 'b' etc. -*/ -static int rtreeBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){ - int rc = SQLITE_OK; - int ii; - - int iIdx = 0; - char zIdxStr[RTREE_MAX_DIMENSIONS*8+1]; - memset(zIdxStr, 0, sizeof(zIdxStr)); - UNUSED_PARAMETER(tab); - - assert( pIdxInfo->idxStr==0 ); - for(ii=0; iinConstraint && iIdx<(int)(sizeof(zIdxStr)-1); ii++){ - struct sqlite3_index_constraint *p = &pIdxInfo->aConstraint[ii]; - - if( p->usable && p->iColumn==0 && p->op==SQLITE_INDEX_CONSTRAINT_EQ ){ - /* We have an equality constraint on the rowid. Use strategy 1. */ - int jj; - for(jj=0; jjaConstraintUsage[jj].argvIndex = 0; - pIdxInfo->aConstraintUsage[jj].omit = 0; - } - pIdxInfo->idxNum = 1; - pIdxInfo->aConstraintUsage[ii].argvIndex = 1; - pIdxInfo->aConstraintUsage[jj].omit = 1; - - /* This strategy involves a two rowid lookups on an B-Tree structures - ** and then a linear search of an R-Tree node. This should be - ** considered almost as quick as a direct rowid lookup (for which - ** sqlite uses an internal cost of 0.0). - */ - pIdxInfo->estimatedCost = 10.0; - return SQLITE_OK; - } - - if( p->usable && (p->iColumn>0 || p->op==SQLITE_INDEX_CONSTRAINT_MATCH) ){ - u8 op; - switch( p->op ){ - case SQLITE_INDEX_CONSTRAINT_EQ: op = RTREE_EQ; break; - case SQLITE_INDEX_CONSTRAINT_GT: op = RTREE_GT; break; - case SQLITE_INDEX_CONSTRAINT_LE: op = RTREE_LE; break; - case SQLITE_INDEX_CONSTRAINT_LT: op = RTREE_LT; break; - case SQLITE_INDEX_CONSTRAINT_GE: op = RTREE_GE; break; - default: - assert( p->op==SQLITE_INDEX_CONSTRAINT_MATCH ); - op = RTREE_MATCH; - break; - } - zIdxStr[iIdx++] = op; - zIdxStr[iIdx++] = p->iColumn - 1 + 'a'; - pIdxInfo->aConstraintUsage[ii].argvIndex = (iIdx/2); - pIdxInfo->aConstraintUsage[ii].omit = 1; - } - } - - pIdxInfo->idxNum = 2; - pIdxInfo->needToFreeIdxStr = 1; - if( iIdx>0 && 0==(pIdxInfo->idxStr = sqlite3_mprintf("%s", zIdxStr)) ){ - return SQLITE_NOMEM; - } - assert( iIdx>=0 ); - pIdxInfo->estimatedCost = (2000000.0 / (double)(iIdx + 1)); - return rc; -} - -/* -** Return the N-dimensional volumn of the cell stored in *p. -*/ -static float cellArea(Rtree *pRtree, RtreeCell *p){ - float area = 1.0; - int ii; - for(ii=0; ii<(pRtree->nDim*2); ii+=2){ - area = (float)(area * (DCOORD(p->aCoord[ii+1]) - DCOORD(p->aCoord[ii]))); - } - return area; -} - -/* -** Return the margin length of cell p. The margin length is the sum -** of the objects size in each dimension. -*/ -static float cellMargin(Rtree *pRtree, RtreeCell *p){ - float margin = 0.0; - int ii; - for(ii=0; ii<(pRtree->nDim*2); ii+=2){ - margin += (float)(DCOORD(p->aCoord[ii+1]) - DCOORD(p->aCoord[ii])); - } - return margin; -} - -/* -** Store the union of cells p1 and p2 in p1. -*/ -static void cellUnion(Rtree *pRtree, RtreeCell *p1, RtreeCell *p2){ - int ii; - if( pRtree->eCoordType==RTREE_COORD_REAL32 ){ - for(ii=0; ii<(pRtree->nDim*2); ii+=2){ - p1->aCoord[ii].f = MIN(p1->aCoord[ii].f, p2->aCoord[ii].f); - p1->aCoord[ii+1].f = MAX(p1->aCoord[ii+1].f, p2->aCoord[ii+1].f); - } - }else{ - for(ii=0; ii<(pRtree->nDim*2); ii+=2){ - p1->aCoord[ii].i = MIN(p1->aCoord[ii].i, p2->aCoord[ii].i); - p1->aCoord[ii+1].i = MAX(p1->aCoord[ii+1].i, p2->aCoord[ii+1].i); - } - } -} - -/* -** Return true if the area covered by p2 is a subset of the area covered -** by p1. False otherwise. -*/ -static int cellContains(Rtree *pRtree, RtreeCell *p1, RtreeCell *p2){ - int ii; - int isInt = (pRtree->eCoordType==RTREE_COORD_INT32); - for(ii=0; ii<(pRtree->nDim*2); ii+=2){ - RtreeCoord *a1 = &p1->aCoord[ii]; - RtreeCoord *a2 = &p2->aCoord[ii]; - if( (!isInt && (a2[0].fa1[1].f)) - || ( isInt && (a2[0].ia1[1].i)) - ){ - return 0; - } - } - return 1; -} - -/* -** Return the amount cell p would grow by if it were unioned with pCell. -*/ -static float cellGrowth(Rtree *pRtree, RtreeCell *p, RtreeCell *pCell){ - float area; - RtreeCell cell; - memcpy(&cell, p, sizeof(RtreeCell)); - area = cellArea(pRtree, &cell); - cellUnion(pRtree, &cell, pCell); - return (cellArea(pRtree, &cell)-area); -} - -#if VARIANT_RSTARTREE_CHOOSESUBTREE || VARIANT_RSTARTREE_SPLIT -static float cellOverlap( - Rtree *pRtree, - RtreeCell *p, - RtreeCell *aCell, - int nCell, - int iExclude -){ - int ii; - float overlap = 0.0; - for(ii=0; iinDim*2); jj+=2){ - double x1; - double x2; - - x1 = MAX(DCOORD(p->aCoord[jj]), DCOORD(aCell[ii].aCoord[jj])); - x2 = MIN(DCOORD(p->aCoord[jj+1]), DCOORD(aCell[ii].aCoord[jj+1])); - - if( x2iDepth-iHeight); ii++){ - int iCell; - sqlite3_int64 iBest = 0; - - float fMinGrowth = 0.0; - float fMinArea = 0.0; -#if VARIANT_RSTARTREE_CHOOSESUBTREE - float fMinOverlap = 0.0; - float overlap; -#endif - - int nCell = NCELL(pNode); - RtreeCell cell; - RtreeNode *pChild; - - RtreeCell *aCell = 0; - -#if VARIANT_RSTARTREE_CHOOSESUBTREE - if( ii==(pRtree->iDepth-1) ){ - int jj; - aCell = sqlite3_malloc(sizeof(RtreeCell)*nCell); - if( !aCell ){ - rc = SQLITE_NOMEM; - nodeRelease(pRtree, pNode); - pNode = 0; - continue; - } - for(jj=0; jjiDepth-1) ){ - overlap = cellOverlapEnlargement(pRtree,&cell,pCell,aCell,nCell,iCell); - }else{ - overlap = 0.0; - } - if( (iCell==0) - || (overlappParent ){ - RtreeNode *pParent = p->pParent; - RtreeCell cell; - int iCell; - - if( nodeParentIndex(pRtree, p, &iCell) ){ - return SQLITE_CORRUPT_VTAB; - } - - nodeGetCell(pRtree, pParent, iCell, &cell); - if( !cellContains(pRtree, &cell, pCell) ){ - cellUnion(pRtree, &cell, pCell); - nodeOverwriteCell(pRtree, pParent, &cell, iCell); - } - - p = pParent; - } - return SQLITE_OK; -} - -/* -** Write mapping (iRowid->iNode) to the _rowid table. -*/ -static int rowidWrite(Rtree *pRtree, sqlite3_int64 iRowid, sqlite3_int64 iNode){ - sqlite3_bind_int64(pRtree->pWriteRowid, 1, iRowid); - sqlite3_bind_int64(pRtree->pWriteRowid, 2, iNode); - sqlite3_step(pRtree->pWriteRowid); - return sqlite3_reset(pRtree->pWriteRowid); -} - -/* -** Write mapping (iNode->iPar) to the _parent table. -*/ -static int parentWrite(Rtree *pRtree, sqlite3_int64 iNode, sqlite3_int64 iPar){ - sqlite3_bind_int64(pRtree->pWriteParent, 1, iNode); - sqlite3_bind_int64(pRtree->pWriteParent, 2, iPar); - sqlite3_step(pRtree->pWriteParent); - return sqlite3_reset(pRtree->pWriteParent); -} - -static int rtreeInsertCell(Rtree *, RtreeNode *, RtreeCell *, int); - -#if VARIANT_GUTTMAN_LINEAR_SPLIT -/* -** Implementation of the linear variant of the PickNext() function from -** Guttman[84]. -*/ -static RtreeCell *LinearPickNext( - Rtree *pRtree, - RtreeCell *aCell, - int nCell, - RtreeCell *pLeftBox, - RtreeCell *pRightBox, - int *aiUsed -){ - int ii; - for(ii=0; aiUsed[ii]; ii++); - aiUsed[ii] = 1; - return &aCell[ii]; -} - -/* -** Implementation of the linear variant of the PickSeeds() function from -** Guttman[84]. -*/ -static void LinearPickSeeds( - Rtree *pRtree, - RtreeCell *aCell, - int nCell, - int *piLeftSeed, - int *piRightSeed -){ - int i; - int iLeftSeed = 0; - int iRightSeed = 1; - float maxNormalInnerWidth = 0.0; - - /* Pick two "seed" cells from the array of cells. The algorithm used - ** here is the LinearPickSeeds algorithm from Gutman[1984]. The - ** indices of the two seed cells in the array are stored in local - ** variables iLeftSeek and iRightSeed. - */ - for(i=0; inDim; i++){ - float x1 = DCOORD(aCell[0].aCoord[i*2]); - float x2 = DCOORD(aCell[0].aCoord[i*2+1]); - float x3 = x1; - float x4 = x2; - int jj; - - int iCellLeft = 0; - int iCellRight = 0; - - for(jj=1; jjx4 ) x4 = right; - if( left>x3 ){ - x3 = left; - iCellRight = jj; - } - if( rightmaxNormalInnerWidth ){ - iLeftSeed = iCellLeft; - iRightSeed = iCellRight; - } - } - } - - *piLeftSeed = iLeftSeed; - *piRightSeed = iRightSeed; -} -#endif /* VARIANT_GUTTMAN_LINEAR_SPLIT */ - -#if VARIANT_GUTTMAN_QUADRATIC_SPLIT -/* -** Implementation of the quadratic variant of the PickNext() function from -** Guttman[84]. -*/ -static RtreeCell *QuadraticPickNext( - Rtree *pRtree, - RtreeCell *aCell, - int nCell, - RtreeCell *pLeftBox, - RtreeCell *pRightBox, - int *aiUsed -){ - #define FABS(a) ((a)<0.0?-1.0*(a):(a)) - - int iSelect = -1; - float fDiff; - int ii; - for(ii=0; iifDiff ){ - fDiff = diff; - iSelect = ii; - } - } - } - aiUsed[iSelect] = 1; - return &aCell[iSelect]; -} - -/* -** Implementation of the quadratic variant of the PickSeeds() function from -** Guttman[84]. -*/ -static void QuadraticPickSeeds( - Rtree *pRtree, - RtreeCell *aCell, - int nCell, - int *piLeftSeed, - int *piRightSeed -){ - int ii; - int jj; - - int iLeftSeed = 0; - int iRightSeed = 1; - float fWaste = 0.0; - - for(ii=0; iifWaste ){ - iLeftSeed = ii; - iRightSeed = jj; - fWaste = waste; - } - } - } - - *piLeftSeed = iLeftSeed; - *piRightSeed = iRightSeed; -} -#endif /* VARIANT_GUTTMAN_QUADRATIC_SPLIT */ - -/* -** Arguments aIdx, aDistance and aSpare all point to arrays of size -** nIdx. The aIdx array contains the set of integers from 0 to -** (nIdx-1) in no particular order. This function sorts the values -** in aIdx according to the indexed values in aDistance. For -** example, assuming the inputs: -** -** aIdx = { 0, 1, 2, 3 } -** aDistance = { 5.0, 2.0, 7.0, 6.0 } -** -** this function sets the aIdx array to contain: -** -** aIdx = { 0, 1, 2, 3 } -** -** The aSpare array is used as temporary working space by the -** sorting algorithm. -*/ -static void SortByDistance( - int *aIdx, - int nIdx, - float *aDistance, - int *aSpare -){ - if( nIdx>1 ){ - int iLeft = 0; - int iRight = 0; - - int nLeft = nIdx/2; - int nRight = nIdx-nLeft; - int *aLeft = aIdx; - int *aRight = &aIdx[nLeft]; - - SortByDistance(aLeft, nLeft, aDistance, aSpare); - SortByDistance(aRight, nRight, aDistance, aSpare); - - memcpy(aSpare, aLeft, sizeof(int)*nLeft); - aLeft = aSpare; - - while( iLeft1 ){ - - int iLeft = 0; - int iRight = 0; - - int nLeft = nIdx/2; - int nRight = nIdx-nLeft; - int *aLeft = aIdx; - int *aRight = &aIdx[nLeft]; - - SortByDimension(pRtree, aLeft, nLeft, iDim, aCell, aSpare); - SortByDimension(pRtree, aRight, nRight, iDim, aCell, aSpare); - - memcpy(aSpare, aLeft, sizeof(int)*nLeft); - aLeft = aSpare; - while( iLeftnDim+1)*(sizeof(int*)+nCell*sizeof(int)); - - aaSorted = (int **)sqlite3_malloc(nByte); - if( !aaSorted ){ - return SQLITE_NOMEM; - } - - aSpare = &((int *)&aaSorted[pRtree->nDim])[pRtree->nDim*nCell]; - memset(aaSorted, 0, nByte); - for(ii=0; iinDim; ii++){ - int jj; - aaSorted[ii] = &((int *)&aaSorted[pRtree->nDim])[ii*nCell]; - for(jj=0; jjnDim; ii++){ - float margin = 0.0; - float fBestOverlap = 0.0; - float fBestArea = 0.0; - int iBestLeft = 0; - int nLeft; - - for( - nLeft=RTREE_MINCELLS(pRtree); - nLeft<=(nCell-RTREE_MINCELLS(pRtree)); - nLeft++ - ){ - RtreeCell left; - RtreeCell right; - int kk; - float overlap; - float area; - - memcpy(&left, &aCell[aaSorted[ii][0]], sizeof(RtreeCell)); - memcpy(&right, &aCell[aaSorted[ii][nCell-1]], sizeof(RtreeCell)); - for(kk=1; kk<(nCell-1); kk++){ - if( kk0; i--){ - RtreeCell *pNext; - pNext = PickNext(pRtree, aCell, nCell, pBboxLeft, pBboxRight, aiUsed); - float diff = - cellGrowth(pRtree, pBboxLeft, pNext) - - cellGrowth(pRtree, pBboxRight, pNext) - ; - if( (RTREE_MINCELLS(pRtree)-NCELL(pRight)==i) - || (diff>0.0 && (RTREE_MINCELLS(pRtree)-NCELL(pLeft)!=i)) - ){ - nodeInsertCell(pRtree, pRight, pNext); - cellUnion(pRtree, pBboxRight, pNext); - }else{ - nodeInsertCell(pRtree, pLeft, pNext); - cellUnion(pRtree, pBboxLeft, pNext); - } - } - - sqlite3_free(aiUsed); - return SQLITE_OK; -} -#endif - -static int updateMapping( - Rtree *pRtree, - i64 iRowid, - RtreeNode *pNode, - int iHeight -){ - int (*xSetMapping)(Rtree *, sqlite3_int64, sqlite3_int64); - xSetMapping = ((iHeight==0)?rowidWrite:parentWrite); - if( iHeight>0 ){ - RtreeNode *pChild = nodeHashLookup(pRtree, iRowid); - if( pChild ){ - nodeRelease(pRtree, pChild->pParent); - nodeReference(pNode); - pChild->pParent = pNode; - } - } - return xSetMapping(pRtree, iRowid, pNode->iNode); -} - -static int SplitNode( - Rtree *pRtree, - RtreeNode *pNode, - RtreeCell *pCell, - int iHeight -){ - int i; - int newCellIsRight = 0; - - int rc = SQLITE_OK; - int nCell = NCELL(pNode); - RtreeCell *aCell; - int *aiUsed; - - RtreeNode *pLeft = 0; - RtreeNode *pRight = 0; - - RtreeCell leftbbox; - RtreeCell rightbbox; - - /* Allocate an array and populate it with a copy of pCell and - ** all cells from node pLeft. Then zero the original node. - */ - aCell = sqlite3_malloc((sizeof(RtreeCell)+sizeof(int))*(nCell+1)); - if( !aCell ){ - rc = SQLITE_NOMEM; - goto splitnode_out; - } - aiUsed = (int *)&aCell[nCell+1]; - memset(aiUsed, 0, sizeof(int)*(nCell+1)); - for(i=0; iiNode==1 ){ - pRight = nodeNew(pRtree, pNode); - pLeft = nodeNew(pRtree, pNode); - pRtree->iDepth++; - pNode->isDirty = 1; - writeInt16(pNode->zData, pRtree->iDepth); - }else{ - pLeft = pNode; - pRight = nodeNew(pRtree, pLeft->pParent); - nodeReference(pLeft); - } - - if( !pLeft || !pRight ){ - rc = SQLITE_NOMEM; - goto splitnode_out; - } - - memset(pLeft->zData, 0, pRtree->iNodeSize); - memset(pRight->zData, 0, pRtree->iNodeSize); - - rc = AssignCells(pRtree, aCell, nCell, pLeft, pRight, &leftbbox, &rightbbox); - if( rc!=SQLITE_OK ){ - goto splitnode_out; - } - - /* Ensure both child nodes have node numbers assigned to them by calling - ** nodeWrite(). Node pRight always needs a node number, as it was created - ** by nodeNew() above. But node pLeft sometimes already has a node number. - ** In this case avoid the all to nodeWrite(). - */ - if( SQLITE_OK!=(rc = nodeWrite(pRtree, pRight)) - || (0==pLeft->iNode && SQLITE_OK!=(rc = nodeWrite(pRtree, pLeft))) - ){ - goto splitnode_out; - } - - rightbbox.iRowid = pRight->iNode; - leftbbox.iRowid = pLeft->iNode; - - if( pNode->iNode==1 ){ - rc = rtreeInsertCell(pRtree, pLeft->pParent, &leftbbox, iHeight+1); - if( rc!=SQLITE_OK ){ - goto splitnode_out; - } - }else{ - RtreeNode *pParent = pLeft->pParent; - int iCell; - rc = nodeParentIndex(pRtree, pLeft, &iCell); - if( rc==SQLITE_OK ){ - nodeOverwriteCell(pRtree, pParent, &leftbbox, iCell); - rc = AdjustTree(pRtree, pParent, &leftbbox); - } - if( rc!=SQLITE_OK ){ - goto splitnode_out; - } - } - if( (rc = rtreeInsertCell(pRtree, pRight->pParent, &rightbbox, iHeight+1)) ){ - goto splitnode_out; - } - - for(i=0; iiRowid ){ - newCellIsRight = 1; - } - if( rc!=SQLITE_OK ){ - goto splitnode_out; - } - } - if( pNode->iNode==1 ){ - for(i=0; iiRowid, pLeft, iHeight); - } - - if( rc==SQLITE_OK ){ - rc = nodeRelease(pRtree, pRight); - pRight = 0; - } - if( rc==SQLITE_OK ){ - rc = nodeRelease(pRtree, pLeft); - pLeft = 0; - } - -splitnode_out: - nodeRelease(pRtree, pRight); - nodeRelease(pRtree, pLeft); - sqlite3_free(aCell); - return rc; -} - -/* -** If node pLeaf is not the root of the r-tree and its pParent pointer is -** still NULL, load all ancestor nodes of pLeaf into memory and populate -** the pLeaf->pParent chain all the way up to the root node. -** -** This operation is required when a row is deleted (or updated - an update -** is implemented as a delete followed by an insert). SQLite provides the -** rowid of the row to delete, which can be used to find the leaf on which -** the entry resides (argument pLeaf). Once the leaf is located, this -** function is called to determine its ancestry. -*/ -static int fixLeafParent(Rtree *pRtree, RtreeNode *pLeaf){ - int rc = SQLITE_OK; - RtreeNode *pChild = pLeaf; - while( rc==SQLITE_OK && pChild->iNode!=1 && pChild->pParent==0 ){ - int rc2 = SQLITE_OK; /* sqlite3_reset() return code */ - sqlite3_bind_int64(pRtree->pReadParent, 1, pChild->iNode); - rc = sqlite3_step(pRtree->pReadParent); - if( rc==SQLITE_ROW ){ - RtreeNode *pTest; /* Used to test for reference loops */ - i64 iNode; /* Node number of parent node */ - - /* Before setting pChild->pParent, test that we are not creating a - ** loop of references (as we would if, say, pChild==pParent). We don't - ** want to do this as it leads to a memory leak when trying to delete - ** the referenced counted node structures. - */ - iNode = sqlite3_column_int64(pRtree->pReadParent, 0); - for(pTest=pLeaf; pTest && pTest->iNode!=iNode; pTest=pTest->pParent); - if( !pTest ){ - rc2 = nodeAcquire(pRtree, iNode, 0, &pChild->pParent); - } - } - rc = sqlite3_reset(pRtree->pReadParent); - if( rc==SQLITE_OK ) rc = rc2; - if( rc==SQLITE_OK && !pChild->pParent ) rc = SQLITE_CORRUPT_VTAB; - pChild = pChild->pParent; - } - return rc; -} - -static int deleteCell(Rtree *, RtreeNode *, int, int); - -static int removeNode(Rtree *pRtree, RtreeNode *pNode, int iHeight){ - int rc; - int rc2; - RtreeNode *pParent = 0; - int iCell; - - assert( pNode->nRef==1 ); - - /* Remove the entry in the parent cell. */ - rc = nodeParentIndex(pRtree, pNode, &iCell); - if( rc==SQLITE_OK ){ - pParent = pNode->pParent; - pNode->pParent = 0; - rc = deleteCell(pRtree, pParent, iCell, iHeight+1); - } - rc2 = nodeRelease(pRtree, pParent); - if( rc==SQLITE_OK ){ - rc = rc2; - } - if( rc!=SQLITE_OK ){ - return rc; - } - - /* Remove the xxx_node entry. */ - sqlite3_bind_int64(pRtree->pDeleteNode, 1, pNode->iNode); - sqlite3_step(pRtree->pDeleteNode); - if( SQLITE_OK!=(rc = sqlite3_reset(pRtree->pDeleteNode)) ){ - return rc; - } - - /* Remove the xxx_parent entry. */ - sqlite3_bind_int64(pRtree->pDeleteParent, 1, pNode->iNode); - sqlite3_step(pRtree->pDeleteParent); - if( SQLITE_OK!=(rc = sqlite3_reset(pRtree->pDeleteParent)) ){ - return rc; - } - - /* Remove the node from the in-memory hash table and link it into - ** the Rtree.pDeleted list. Its contents will be re-inserted later on. - */ - nodeHashDelete(pRtree, pNode); - pNode->iNode = iHeight; - pNode->pNext = pRtree->pDeleted; - pNode->nRef++; - pRtree->pDeleted = pNode; - - return SQLITE_OK; -} - -static int fixBoundingBox(Rtree *pRtree, RtreeNode *pNode){ - RtreeNode *pParent = pNode->pParent; - int rc = SQLITE_OK; - if( pParent ){ - int ii; - int nCell = NCELL(pNode); - RtreeCell box; /* Bounding box for pNode */ - nodeGetCell(pRtree, pNode, 0, &box); - for(ii=1; iiiNode; - rc = nodeParentIndex(pRtree, pNode, &ii); - if( rc==SQLITE_OK ){ - nodeOverwriteCell(pRtree, pParent, &box, ii); - rc = fixBoundingBox(pRtree, pParent); - } - } - return rc; -} - -/* -** Delete the cell at index iCell of node pNode. After removing the -** cell, adjust the r-tree data structure if required. -*/ -static int deleteCell(Rtree *pRtree, RtreeNode *pNode, int iCell, int iHeight){ - RtreeNode *pParent; - int rc; - - if( SQLITE_OK!=(rc = fixLeafParent(pRtree, pNode)) ){ - return rc; - } - - /* Remove the cell from the node. This call just moves bytes around - ** the in-memory node image, so it cannot fail. - */ - nodeDeleteCell(pRtree, pNode, iCell); - - /* If the node is not the tree root and now has less than the minimum - ** number of cells, remove it from the tree. Otherwise, update the - ** cell in the parent node so that it tightly contains the updated - ** node. - */ - pParent = pNode->pParent; - assert( pParent || pNode->iNode==1 ); - if( pParent ){ - if( NCELL(pNode)nDim; iDim++){ - aCenterCoord[iDim] += (float)DCOORD(aCell[ii].aCoord[iDim*2]); - aCenterCoord[iDim] += (float)DCOORD(aCell[ii].aCoord[iDim*2+1]); - } - } - for(iDim=0; iDimnDim; iDim++){ - aCenterCoord[iDim] = (float)(aCenterCoord[iDim]/((float)nCell*2.0)); - } - - for(ii=0; iinDim; iDim++){ - float coord = (float)(DCOORD(aCell[ii].aCoord[iDim*2+1]) - - DCOORD(aCell[ii].aCoord[iDim*2])); - aDistance[ii] += (coord-aCenterCoord[iDim])*(coord-aCenterCoord[iDim]); - } - } - - SortByDistance(aOrder, nCell, aDistance, aSpare); - nodeZero(pRtree, pNode); - - for(ii=0; rc==SQLITE_OK && ii<(nCell-(RTREE_MINCELLS(pRtree)+1)); ii++){ - RtreeCell *p = &aCell[aOrder[ii]]; - nodeInsertCell(pRtree, pNode, p); - if( p->iRowid==pCell->iRowid ){ - if( iHeight==0 ){ - rc = rowidWrite(pRtree, p->iRowid, pNode->iNode); - }else{ - rc = parentWrite(pRtree, p->iRowid, pNode->iNode); - } - } - } - if( rc==SQLITE_OK ){ - rc = fixBoundingBox(pRtree, pNode); - } - for(; rc==SQLITE_OK && iiiNode currently contains - ** the height of the sub-tree headed by the cell. - */ - RtreeNode *pInsert; - RtreeCell *p = &aCell[aOrder[ii]]; - rc = ChooseLeaf(pRtree, p, iHeight, &pInsert); - if( rc==SQLITE_OK ){ - int rc2; - rc = rtreeInsertCell(pRtree, pInsert, p, iHeight); - rc2 = nodeRelease(pRtree, pInsert); - if( rc==SQLITE_OK ){ - rc = rc2; - } - } - } - - sqlite3_free(aCell); - return rc; -} - -/* -** Insert cell pCell into node pNode. Node pNode is the head of a -** subtree iHeight high (leaf nodes have iHeight==0). -*/ -static int rtreeInsertCell( - Rtree *pRtree, - RtreeNode *pNode, - RtreeCell *pCell, - int iHeight -){ - int rc = SQLITE_OK; - if( iHeight>0 ){ - RtreeNode *pChild = nodeHashLookup(pRtree, pCell->iRowid); - if( pChild ){ - nodeRelease(pRtree, pChild->pParent); - nodeReference(pNode); - pChild->pParent = pNode; - } - } - if( nodeInsertCell(pRtree, pNode, pCell) ){ -#if VARIANT_RSTARTREE_REINSERT - if( iHeight<=pRtree->iReinsertHeight || pNode->iNode==1){ - rc = SplitNode(pRtree, pNode, pCell, iHeight); - }else{ - pRtree->iReinsertHeight = iHeight; - rc = Reinsert(pRtree, pNode, pCell, iHeight); - } -#else - rc = SplitNode(pRtree, pNode, pCell, iHeight); -#endif - }else{ - rc = AdjustTree(pRtree, pNode, pCell); - if( rc==SQLITE_OK ){ - if( iHeight==0 ){ - rc = rowidWrite(pRtree, pCell->iRowid, pNode->iNode); - }else{ - rc = parentWrite(pRtree, pCell->iRowid, pNode->iNode); - } - } - } - return rc; -} - -static int reinsertNodeContent(Rtree *pRtree, RtreeNode *pNode){ - int ii; - int rc = SQLITE_OK; - int nCell = NCELL(pNode); - - for(ii=0; rc==SQLITE_OK && iiiNode currently contains - ** the height of the sub-tree headed by the cell. - */ - rc = ChooseLeaf(pRtree, &cell, (int)pNode->iNode, &pInsert); - if( rc==SQLITE_OK ){ - int rc2; - rc = rtreeInsertCell(pRtree, pInsert, &cell, (int)pNode->iNode); - rc2 = nodeRelease(pRtree, pInsert); - if( rc==SQLITE_OK ){ - rc = rc2; - } - } - } - return rc; -} - -/* -** Select a currently unused rowid for a new r-tree record. -*/ -static int newRowid(Rtree *pRtree, i64 *piRowid){ - int rc; - sqlite3_bind_null(pRtree->pWriteRowid, 1); - sqlite3_bind_null(pRtree->pWriteRowid, 2); - sqlite3_step(pRtree->pWriteRowid); - rc = sqlite3_reset(pRtree->pWriteRowid); - *piRowid = sqlite3_last_insert_rowid(pRtree->db); - return rc; -} - -/* -** Remove the entry with rowid=iDelete from the r-tree structure. -*/ -static int rtreeDeleteRowid(Rtree *pRtree, sqlite3_int64 iDelete){ - int rc; /* Return code */ - RtreeNode *pLeaf; /* Leaf node containing record iDelete */ - int iCell; /* Index of iDelete cell in pLeaf */ - RtreeNode *pRoot; /* Root node of rtree structure */ - - - /* Obtain a reference to the root node to initialise Rtree.iDepth */ - rc = nodeAcquire(pRtree, 1, 0, &pRoot); - - /* Obtain a reference to the leaf node that contains the entry - ** about to be deleted. - */ - if( rc==SQLITE_OK ){ - rc = findLeafNode(pRtree, iDelete, &pLeaf); - } - - /* Delete the cell in question from the leaf node. */ - if( rc==SQLITE_OK ){ - int rc2; - rc = nodeRowidIndex(pRtree, pLeaf, iDelete, &iCell); - if( rc==SQLITE_OK ){ - rc = deleteCell(pRtree, pLeaf, iCell, 0); - } - rc2 = nodeRelease(pRtree, pLeaf); - if( rc==SQLITE_OK ){ - rc = rc2; - } - } - - /* Delete the corresponding entry in the _rowid table. */ - if( rc==SQLITE_OK ){ - sqlite3_bind_int64(pRtree->pDeleteRowid, 1, iDelete); - sqlite3_step(pRtree->pDeleteRowid); - rc = sqlite3_reset(pRtree->pDeleteRowid); - } - - /* Check if the root node now has exactly one child. If so, remove - ** it, schedule the contents of the child for reinsertion and - ** reduce the tree height by one. - ** - ** This is equivalent to copying the contents of the child into - ** the root node (the operation that Gutman's paper says to perform - ** in this scenario). - */ - if( rc==SQLITE_OK && pRtree->iDepth>0 && NCELL(pRoot)==1 ){ - int rc2; - RtreeNode *pChild; - i64 iChild = nodeGetRowid(pRtree, pRoot, 0); - rc = nodeAcquire(pRtree, iChild, pRoot, &pChild); - if( rc==SQLITE_OK ){ - rc = removeNode(pRtree, pChild, pRtree->iDepth-1); - } - rc2 = nodeRelease(pRtree, pChild); - if( rc==SQLITE_OK ) rc = rc2; - if( rc==SQLITE_OK ){ - pRtree->iDepth--; - writeInt16(pRoot->zData, pRtree->iDepth); - pRoot->isDirty = 1; - } - } - - /* Re-insert the contents of any underfull nodes removed from the tree. */ - for(pLeaf=pRtree->pDeleted; pLeaf; pLeaf=pRtree->pDeleted){ - if( rc==SQLITE_OK ){ - rc = reinsertNodeContent(pRtree, pLeaf); - } - pRtree->pDeleted = pLeaf->pNext; - sqlite3_free(pLeaf); - } - - /* Release the reference to the root node. */ - if( rc==SQLITE_OK ){ - rc = nodeRelease(pRtree, pRoot); - }else{ - nodeRelease(pRtree, pRoot); - } - - return rc; -} - -/* -** The xUpdate method for rtree module virtual tables. -*/ -static int rtreeUpdate( - sqlite3_vtab *pVtab, - int nData, - sqlite3_value **azData, - sqlite_int64 *pRowid -){ - Rtree *pRtree = (Rtree *)pVtab; - int rc = SQLITE_OK; - RtreeCell cell; /* New cell to insert if nData>1 */ - int bHaveRowid = 0; /* Set to 1 after new rowid is determined */ - - rtreeReference(pRtree); - assert(nData>=1); - - /* Constraint handling. A write operation on an r-tree table may return - ** SQLITE_CONSTRAINT for two reasons: - ** - ** 1. A duplicate rowid value, or - ** 2. The supplied data violates the "x2>=x1" constraint. - ** - ** In the first case, if the conflict-handling mode is REPLACE, then - ** the conflicting row can be removed before proceeding. In the second - ** case, SQLITE_CONSTRAINT must be returned regardless of the - ** conflict-handling mode specified by the user. - */ - if( nData>1 ){ - int ii; - - /* Populate the cell.aCoord[] array. The first coordinate is azData[3]. */ - assert( nData==(pRtree->nDim*2 + 3) ); - if( pRtree->eCoordType==RTREE_COORD_REAL32 ){ - for(ii=0; ii<(pRtree->nDim*2); ii+=2){ - cell.aCoord[ii].f = (float)sqlite3_value_double(azData[ii+3]); - cell.aCoord[ii+1].f = (float)sqlite3_value_double(azData[ii+4]); - if( cell.aCoord[ii].f>cell.aCoord[ii+1].f ){ - rc = SQLITE_CONSTRAINT; - goto constraint; - } - } - }else{ - for(ii=0; ii<(pRtree->nDim*2); ii+=2){ - cell.aCoord[ii].i = sqlite3_value_int(azData[ii+3]); - cell.aCoord[ii+1].i = sqlite3_value_int(azData[ii+4]); - if( cell.aCoord[ii].i>cell.aCoord[ii+1].i ){ - rc = SQLITE_CONSTRAINT; - goto constraint; - } - } - } - - /* If a rowid value was supplied, check if it is already present in - ** the table. If so, the constraint has failed. */ - if( sqlite3_value_type(azData[2])!=SQLITE_NULL ){ - cell.iRowid = sqlite3_value_int64(azData[2]); - if( sqlite3_value_type(azData[0])==SQLITE_NULL - || sqlite3_value_int64(azData[0])!=cell.iRowid - ){ - int steprc; - sqlite3_bind_int64(pRtree->pReadRowid, 1, cell.iRowid); - steprc = sqlite3_step(pRtree->pReadRowid); - rc = sqlite3_reset(pRtree->pReadRowid); - if( SQLITE_ROW==steprc ){ - if( sqlite3_vtab_on_conflict(pRtree->db)==SQLITE_REPLACE ){ - rc = rtreeDeleteRowid(pRtree, cell.iRowid); - }else{ - rc = SQLITE_CONSTRAINT; - goto constraint; - } - } - } - bHaveRowid = 1; - } - } - - /* If azData[0] is not an SQL NULL value, it is the rowid of a - ** record to delete from the r-tree table. The following block does - ** just that. - */ - if( sqlite3_value_type(azData[0])!=SQLITE_NULL ){ - rc = rtreeDeleteRowid(pRtree, sqlite3_value_int64(azData[0])); - } - - /* If the azData[] array contains more than one element, elements - ** (azData[2]..azData[argc-1]) contain a new record to insert into - ** the r-tree structure. - */ - if( rc==SQLITE_OK && nData>1 ){ - /* Insert the new record into the r-tree */ - RtreeNode *pLeaf; - - /* Figure out the rowid of the new row. */ - if( bHaveRowid==0 ){ - rc = newRowid(pRtree, &cell.iRowid); - } - *pRowid = cell.iRowid; - - if( rc==SQLITE_OK ){ - rc = ChooseLeaf(pRtree, &cell, 0, &pLeaf); - } - if( rc==SQLITE_OK ){ - int rc2; - pRtree->iReinsertHeight = -1; - rc = rtreeInsertCell(pRtree, pLeaf, &cell, 0); - rc2 = nodeRelease(pRtree, pLeaf); - if( rc==SQLITE_OK ){ - rc = rc2; - } - } - } - -constraint: - rtreeRelease(pRtree); - return rc; -} - -/* -** The xRename method for rtree module virtual tables. -*/ -static int rtreeRename(sqlite3_vtab *pVtab, const char *zNewName){ - Rtree *pRtree = (Rtree *)pVtab; - int rc = SQLITE_NOMEM; - char *zSql = sqlite3_mprintf( - "ALTER TABLE %Q.'%q_node' RENAME TO \"%w_node\";" - "ALTER TABLE %Q.'%q_parent' RENAME TO \"%w_parent\";" - "ALTER TABLE %Q.'%q_rowid' RENAME TO \"%w_rowid\";" - , pRtree->zDb, pRtree->zName, zNewName - , pRtree->zDb, pRtree->zName, zNewName - , pRtree->zDb, pRtree->zName, zNewName - ); - if( zSql ){ - rc = sqlite3_exec(pRtree->db, zSql, 0, 0, 0); - sqlite3_free(zSql); - } - return rc; -} - -static sqlite3_module rtreeModule = { - 0, /* iVersion */ - rtreeCreate, /* xCreate - create a table */ - rtreeConnect, /* xConnect - connect to an existing table */ - rtreeBestIndex, /* xBestIndex - Determine search strategy */ - rtreeDisconnect, /* xDisconnect - Disconnect from a table */ - rtreeDestroy, /* xDestroy - Drop a table */ - rtreeOpen, /* xOpen - open a cursor */ - rtreeClose, /* xClose - close a cursor */ - rtreeFilter, /* xFilter - configure scan constraints */ - rtreeNext, /* xNext - advance a cursor */ - rtreeEof, /* xEof */ - rtreeColumn, /* xColumn - read data */ - rtreeRowid, /* xRowid - read data */ - rtreeUpdate, /* xUpdate - write data */ - 0, /* xBegin - begin transaction */ - 0, /* xSync - sync transaction */ - 0, /* xCommit - commit transaction */ - 0, /* xRollback - rollback transaction */ - 0, /* xFindFunction - function overloading */ - rtreeRename, /* xRename - rename the table */ - 0, /* xSavepoint */ - 0, /* xRelease */ - 0 /* xRollbackTo */ -}; - -static int rtreeSqlInit( - Rtree *pRtree, - sqlite3 *db, - const char *zDb, - const char *zPrefix, - int isCreate -){ - int rc = SQLITE_OK; - - #define N_STATEMENT 9 - static const char *azSql[N_STATEMENT] = { - /* Read and write the xxx_node table */ - "SELECT data FROM '%q'.'%q_node' WHERE nodeno = :1", - "INSERT OR REPLACE INTO '%q'.'%q_node' VALUES(:1, :2)", - "DELETE FROM '%q'.'%q_node' WHERE nodeno = :1", - - /* Read and write the xxx_rowid table */ - "SELECT nodeno FROM '%q'.'%q_rowid' WHERE rowid = :1", - "INSERT OR REPLACE INTO '%q'.'%q_rowid' VALUES(:1, :2)", - "DELETE FROM '%q'.'%q_rowid' WHERE rowid = :1", - - /* Read and write the xxx_parent table */ - "SELECT parentnode FROM '%q'.'%q_parent' WHERE nodeno = :1", - "INSERT OR REPLACE INTO '%q'.'%q_parent' VALUES(:1, :2)", - "DELETE FROM '%q'.'%q_parent' WHERE nodeno = :1" - }; - sqlite3_stmt **appStmt[N_STATEMENT]; - int i; - - pRtree->db = db; - - if( isCreate ){ - char *zCreate = sqlite3_mprintf( -"CREATE TABLE \"%w\".\"%w_node\"(nodeno INTEGER PRIMARY KEY, data BLOB);" -"CREATE TABLE \"%w\".\"%w_rowid\"(rowid INTEGER PRIMARY KEY, nodeno INTEGER);" -"CREATE TABLE \"%w\".\"%w_parent\"(nodeno INTEGER PRIMARY KEY, parentnode INTEGER);" -"INSERT INTO '%q'.'%q_node' VALUES(1, zeroblob(%d))", - zDb, zPrefix, zDb, zPrefix, zDb, zPrefix, zDb, zPrefix, pRtree->iNodeSize - ); - if( !zCreate ){ - return SQLITE_NOMEM; - } - rc = sqlite3_exec(db, zCreate, 0, 0, 0); - sqlite3_free(zCreate); - if( rc!=SQLITE_OK ){ - return rc; - } - } - - appStmt[0] = &pRtree->pReadNode; - appStmt[1] = &pRtree->pWriteNode; - appStmt[2] = &pRtree->pDeleteNode; - appStmt[3] = &pRtree->pReadRowid; - appStmt[4] = &pRtree->pWriteRowid; - appStmt[5] = &pRtree->pDeleteRowid; - appStmt[6] = &pRtree->pReadParent; - appStmt[7] = &pRtree->pWriteParent; - appStmt[8] = &pRtree->pDeleteParent; - - for(i=0; iiNodeSize is populated and SQLITE_OK returned. -** Otherwise, an SQLite error code is returned. -** -** If this function is being called as part of an xConnect(), then the rtree -** table already exists. In this case the node-size is determined by inspecting -** the root node of the tree. -** -** Otherwise, for an xCreate(), use 64 bytes less than the database page-size. -** This ensures that each node is stored on a single database page. If the -** database page-size is so large that more than RTREE_MAXCELLS entries -** would fit in a single node, use a smaller node-size. -*/ -static int getNodeSize( - sqlite3 *db, /* Database handle */ - Rtree *pRtree, /* Rtree handle */ - int isCreate /* True for xCreate, false for xConnect */ -){ - int rc; - char *zSql; - if( isCreate ){ - int iPageSize = 0; - zSql = sqlite3_mprintf("PRAGMA %Q.page_size", pRtree->zDb); - rc = getIntFromStmt(db, zSql, &iPageSize); - if( rc==SQLITE_OK ){ - pRtree->iNodeSize = iPageSize-64; - if( (4+pRtree->nBytesPerCell*RTREE_MAXCELLS)iNodeSize ){ - pRtree->iNodeSize = 4+pRtree->nBytesPerCell*RTREE_MAXCELLS; - } - } - }else{ - zSql = sqlite3_mprintf( - "SELECT length(data) FROM '%q'.'%q_node' WHERE nodeno = 1", - pRtree->zDb, pRtree->zName - ); - rc = getIntFromStmt(db, zSql, &pRtree->iNodeSize); - } - - sqlite3_free(zSql); - return rc; -} - -/* -** This function is the implementation of both the xConnect and xCreate -** methods of the r-tree virtual table. -** -** argv[0] -> module name -** argv[1] -> database name -** argv[2] -> table name -** argv[...] -> column names... -*/ -static int rtreeInit( - sqlite3 *db, /* Database connection */ - void *pAux, /* One of the RTREE_COORD_* constants */ - int argc, const char *const*argv, /* Parameters to CREATE TABLE statement */ - sqlite3_vtab **ppVtab, /* OUT: New virtual table */ - char **pzErr, /* OUT: Error message, if any */ - int isCreate /* True for xCreate, false for xConnect */ -){ - int rc = SQLITE_OK; - Rtree *pRtree; - int nDb; /* Length of string argv[1] */ - int nName; /* Length of string argv[2] */ - int eCoordType = (pAux ? RTREE_COORD_INT32 : RTREE_COORD_REAL32); - - const char *aErrMsg[] = { - 0, /* 0 */ - "Wrong number of columns for an rtree table", /* 1 */ - "Too few columns for an rtree table", /* 2 */ - "Too many columns for an rtree table" /* 3 */ - }; - - int iErr = (argc<6) ? 2 : argc>(RTREE_MAX_DIMENSIONS*2+4) ? 3 : argc%2; - if( aErrMsg[iErr] ){ - *pzErr = sqlite3_mprintf("%s", aErrMsg[iErr]); - return SQLITE_ERROR; - } - - sqlite3_vtab_config(db, SQLITE_VTAB_CONSTRAINT_SUPPORT, 1); - - /* Allocate the sqlite3_vtab structure */ - nDb = strlen(argv[1]); - nName = strlen(argv[2]); - pRtree = (Rtree *)sqlite3_malloc(sizeof(Rtree)+nDb+nName+2); - if( !pRtree ){ - return SQLITE_NOMEM; - } - memset(pRtree, 0, sizeof(Rtree)+nDb+nName+2); - pRtree->nBusy = 1; - pRtree->base.pModule = &rtreeModule; - pRtree->zDb = (char *)&pRtree[1]; - pRtree->zName = &pRtree->zDb[nDb+1]; - pRtree->nDim = (argc-4)/2; - pRtree->nBytesPerCell = 8 + pRtree->nDim*4*2; - pRtree->eCoordType = eCoordType; - memcpy(pRtree->zDb, argv[1], nDb); - memcpy(pRtree->zName, argv[2], nName); - - /* Figure out the node size to use. */ - rc = getNodeSize(db, pRtree, isCreate); - - /* Create/Connect to the underlying relational database schema. If - ** that is successful, call sqlite3_declare_vtab() to configure - ** the r-tree table schema. - */ - if( rc==SQLITE_OK ){ - if( (rc = rtreeSqlInit(pRtree, db, argv[1], argv[2], isCreate)) ){ - *pzErr = sqlite3_mprintf("%s", sqlite3_errmsg(db)); - }else{ - char *zSql = sqlite3_mprintf("CREATE TABLE x(%s", argv[3]); - char *zTmp; - int ii; - for(ii=4; zSql && ii*2 coordinates. -*/ -static void rtreenode(sqlite3_context *ctx, int nArg, sqlite3_value **apArg){ - char *zText = 0; - RtreeNode node; - Rtree tree; - int ii; - - UNUSED_PARAMETER(nArg); - memset(&node, 0, sizeof(RtreeNode)); - memset(&tree, 0, sizeof(Rtree)); - tree.nDim = sqlite3_value_int(apArg[0]); - tree.nBytesPerCell = 8 + 8 * tree.nDim; - node.zData = (u8 *)sqlite3_value_blob(apArg[1]); - - for(ii=0; iimagic = RTREE_GEOMETRY_MAGIC; - pBlob->xGeom = pGeomCtx->xGeom; - pBlob->pContext = pGeomCtx->pContext; - pBlob->nParam = nArg; - for(i=0; iaParam[i] = sqlite3_value_double(aArg[i]); - } - sqlite3_result_blob(ctx, pBlob, nBlob, doSqlite3Free); - } -} - -/* -** Register a new geometry function for use with the r-tree MATCH operator. -*/ -int sqlite3_rtree_geometry_callback( - sqlite3 *db, - const char *zGeom, - int (*xGeom)(sqlite3_rtree_geometry *, int, double *, int *), - void *pContext -){ - RtreeGeomCallback *pGeomCtx; /* Context object for new user-function */ - - /* Allocate and populate the context object. */ - pGeomCtx = (RtreeGeomCallback *)sqlite3_malloc(sizeof(RtreeGeomCallback)); - if( !pGeomCtx ) return SQLITE_NOMEM; - pGeomCtx->xGeom = xGeom; - pGeomCtx->pContext = pContext; - - /* Create the new user-function. Register a destructor function to delete - ** the context object when it is no longer required. */ - return sqlite3_create_function_v2(db, zGeom, -1, SQLITE_ANY, - (void *)pGeomCtx, geomCallback, 0, 0, doSqlite3Free - ); -} - -#if !SQLITE_CORE -int sqlite3_extension_init( - sqlite3 *db, - char **pzErrMsg, - const sqlite3_api_routines *pApi -){ - SQLITE_EXTENSION_INIT2(pApi) - return sqlite3RtreeInit(db); -} -#endif - -#endif diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree.h deleted file mode 100644 index 0f3abce129..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree.h +++ /dev/null @@ -1,26 +0,0 @@ -/* -** 2008 May 26 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This header file is used by programs that want to link against the -** RTREE library. All it does is declare the sqlite3RtreeInit() interface. -*/ -#include "sqlite3.h" - -#ifdef __cplusplus -extern "C" { -#endif /* __cplusplus */ - -int sqlite3RtreeInit(sqlite3 *db); - -#ifdef __cplusplus -} /* extern "C" */ -#endif /* __cplusplus */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree1.test b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree1.test deleted file mode 100644 index a501f68359..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree1.test +++ /dev/null @@ -1,500 +0,0 @@ -# 2008 Feb 19 -# -# The author disclaims copyright to this source code. In place of -# a legal notice, here is a blessing: -# -# May you do good and not evil. -# May you find forgiveness for yourself and forgive others. -# May you share freely, never taking more than you give. -# -#*********************************************************************** -# -# The focus of this file is testing the r-tree extension. -# - -if {![info exists testdir]} { - set testdir [file join [file dirname [info script]] .. .. test] -} -source [file join [file dirname [info script]] rtree_util.tcl] -source $testdir/tester.tcl - -# Test plan: -# -# rtree-1.*: Creating/destroying r-tree tables. -# rtree-2.*: Test the implicit constraints - unique rowid and -# (coord[N]<=coord[N+1]) for even values of N. Also -# automatic assigning of rowid values. -# rtree-3.*: Linear scans of r-tree data. -# rtree-4.*: Test INSERT -# rtree-5.*: Test DELETE -# rtree-6.*: Test UPDATE -# rtree-7.*: Test renaming an r-tree table. -# rtree-8.*: Test constrained scans of r-tree data. -# -# rtree-12.*: Test that on-conflict clauses are supported. -# - -ifcapable !rtree { - finish_test - return -} - -#---------------------------------------------------------------------------- -# Test cases rtree-1.* test CREATE and DROP table statements. -# - -# Test creating and dropping an rtree table. -# -do_test rtree-1.1.1 { - execsql { CREATE VIRTUAL TABLE t1 USING rtree(ii, x1, x2, y1, y2) } -} {} -do_test rtree-1.1.2 { - execsql { SELECT name FROM sqlite_master ORDER BY name } -} {t1 t1_node t1_parent t1_rowid} -do_test rtree-1.1.3 { - execsql { - DROP TABLE t1; - SELECT name FROM sqlite_master ORDER BY name; - } -} {} - -# Test creating and dropping an rtree table with an odd name in -# an attached database. -# -do_test rtree-1.2.1 { - file delete -force test2.db - execsql { - ATTACH 'test2.db' AS aux; - CREATE VIRTUAL TABLE aux.'a" "b' USING rtree(ii, x1, x2, y1, y2); - } -} {} -do_test rtree-1.2.2 { - execsql { SELECT name FROM sqlite_master ORDER BY name } -} {} -do_test rtree-1.2.3 { - execsql { SELECT name FROM aux.sqlite_master ORDER BY name } -} {{a" "b} {a" "b_node} {a" "b_parent} {a" "b_rowid}} -do_test rtree-1.2.4 { - execsql { - DROP TABLE aux.'a" "b'; - SELECT name FROM aux.sqlite_master ORDER BY name; - } -} {} - -# Test that the logic for checking the number of columns specified -# for an rtree table. Acceptable values are odd numbers between 3 and -# 11, inclusive. -# -set cols [list i1 i2 i3 i4 i5 i6 i7 i8 i9 iA iB iC iD iE iF iG iH iI iJ iK] -for {set nCol 1} {$nCol<[llength $cols]} {incr nCol} { - - set columns [join [lrange $cols 0 [expr {$nCol-1}]] ,] - - set X {0 {}} - if {$nCol%2 == 0} { set X {1 {Wrong number of columns for an rtree table}} } - if {$nCol < 3} { set X {1 {Too few columns for an rtree table}} } - if {$nCol > 11} { set X {1 {Too many columns for an rtree table}} } - - do_test rtree-1.3.$nCol { - catchsql " - CREATE VIRTUAL TABLE t1 USING rtree($columns); - " - } $X - - catchsql { DROP TABLE t1 } -} - -# Test that it is possible to open an existing database that contains -# r-tree tables. -# -do_test rtree-1.4.1 { - execsql { - CREATE VIRTUAL TABLE t1 USING rtree(ii, x1, x2); - INSERT INTO t1 VALUES(1, 5.0, 10.0); - INSERT INTO t1 VALUES(2, 15.0, 20.0); - } -} {} -do_test rtree-1.4.2 { - db close - sqlite3 db test.db - execsql { SELECT * FROM t1 ORDER BY ii } -} {1 5.0 10.0 2 15.0 20.0} -do_test rtree-1.4.3 { - execsql { DROP TABLE t1 } -} {} - -# Test that it is possible to create an r-tree table with ridiculous -# column names. -# -do_test rtree-1.5.1 { - execsql { - CREATE VIRTUAL TABLE t1 USING rtree("the key", "x dim.", "x2'dim"); - INSERT INTO t1 VALUES(1, 2, 3); - SELECT "the key", "x dim.", "x2'dim" FROM t1; - } -} {1 2.0 3.0} -do_test rtree-1.5.1 { - execsql { DROP TABLE t1 } -} {} - -# Force the r-tree constructor to fail. -# -do_test rtree-1.6.1 { - execsql { CREATE TABLE t1_rowid(a); } - catchsql { - CREATE VIRTUAL TABLE t1 USING rtree("the key", "x dim.", "x2'dim"); - } -} {1 {table "t1_rowid" already exists}} -do_test rtree-1.6.1 { - execsql { DROP TABLE t1_rowid } -} {} - -#---------------------------------------------------------------------------- -# Test cases rtree-2.* -# -do_test rtree-2.1.1 { - execsql { - CREATE VIRTUAL TABLE t1 USING rtree(ii, x1, x2, y1, y2); - SELECT * FROM t1; - } -} {} - -do_test rtree-2.1.2 { - execsql { INSERT INTO t1 VALUES(NULL, 1, 3, 2, 4) } - execsql { SELECT * FROM t1 } -} {1 1.0 3.0 2.0 4.0} -do_test rtree-2.1.3 { - execsql { INSERT INTO t1 VALUES(NULL, 1, 3, 2, 4) } - execsql { SELECT rowid FROM t1 ORDER BY rowid } -} {1 2} -do_test rtree-2.1.3 { - execsql { INSERT INTO t1 VALUES(NULL, 1, 3, 2, 4) } - execsql { SELECT ii FROM t1 ORDER BY ii } -} {1 2 3} - -do_test rtree-2.2.1 { - catchsql { INSERT INTO t1 VALUES(2, 1, 3, 2, 4) } -} {1 {constraint failed}} -do_test rtree-2.2.2 { - catchsql { INSERT INTO t1 VALUES(4, 1, 3, 4, 2) } -} {1 {constraint failed}} -do_test rtree-2.2.3 { - catchsql { INSERT INTO t1 VALUES(4, 3, 1, 2, 4) } -} {1 {constraint failed}} -do_test rtree-2.2.4 { - execsql { SELECT ii FROM t1 ORDER BY ii } -} {1 2 3} - -do_test rtree-2.X { - execsql { DROP TABLE t1 } -} {} - -#---------------------------------------------------------------------------- -# Test cases rtree-3.* test linear scans of r-tree table data. To test -# this we have to insert some data into an r-tree, but that is not the -# focus of these tests. -# -do_test rtree-3.1.1 { - execsql { - CREATE VIRTUAL TABLE t1 USING rtree(ii, x1, x2, y1, y2); - SELECT * FROM t1; - } -} {} -do_test rtree-3.1.2 { - execsql { - INSERT INTO t1 VALUES(5, 1, 3, 2, 4); - SELECT * FROM t1; - } -} {5 1.0 3.0 2.0 4.0} -do_test rtree-3.1.3 { - execsql { - INSERT INTO t1 VALUES(6, 2, 6, 4, 8); - SELECT * FROM t1; - } -} {5 1.0 3.0 2.0 4.0 6 2.0 6.0 4.0 8.0} - -# Test the constraint on the coordinates (c[i]<=c[i+1] where (i%2==0)): -do_test rtree-3.2.1 { - catchsql { INSERT INTO t1 VALUES(7, 2, 6, 4, 3) } -} {1 {constraint failed}} -do_test rtree-3.2.2 { - catchsql { INSERT INTO t1 VALUES(8, 2, 6, 3, 3) } -} {0 {}} - -#---------------------------------------------------------------------------- -# Test cases rtree-5.* test DELETE operations. -# -do_test rtree-5.1.1 { - execsql { CREATE VIRTUAL TABLE t2 USING rtree(ii, x1, x2) } -} {} -do_test rtree-5.1.2 { - execsql { - INSERT INTO t2 VALUES(1, 10, 20); - INSERT INTO t2 VALUES(2, 30, 40); - INSERT INTO t2 VALUES(3, 50, 60); - SELECT * FROM t2 ORDER BY ii; - } -} {1 10.0 20.0 2 30.0 40.0 3 50.0 60.0} -do_test rtree-5.1.3 { - execsql { - DELETE FROM t2 WHERE ii=2; - SELECT * FROM t2 ORDER BY ii; - } -} {1 10.0 20.0 3 50.0 60.0} -do_test rtree-5.1.4 { - execsql { - DELETE FROM t2 WHERE ii=1; - SELECT * FROM t2 ORDER BY ii; - } -} {3 50.0 60.0} -do_test rtree-5.1.5 { - execsql { - DELETE FROM t2 WHERE ii=3; - SELECT * FROM t2 ORDER BY ii; - } -} {} -do_test rtree-5.1.6 { - execsql { SELECT * FROM t2_rowid } -} {} - -#---------------------------------------------------------------------------- -# Test cases rtree-5.* test UPDATE operations. -# -do_test rtree-6.1.1 { - execsql { CREATE VIRTUAL TABLE t3 USING rtree(ii, x1, x2, y1, y2) } -} {} -do_test rtree-6.1.2 { - execsql { - INSERT INTO t3 VALUES(1, 2, 3, 4, 5); - UPDATE t3 SET x2=5; - SELECT * FROM t3; - } -} {1 2.0 5.0 4.0 5.0} -do_test rtree-6.1.3 { - execsql { UPDATE t3 SET ii = 2 } - execsql { SELECT * FROM t3 } -} {2 2.0 5.0 4.0 5.0} - -#---------------------------------------------------------------------------- -# Test cases rtree-7.* test rename operations. -# -do_test rtree-7.1.1 { - execsql { - CREATE VIRTUAL TABLE t4 USING rtree(ii, x1, x2, y1, y2, z1, z2); - INSERT INTO t4 VALUES(1, 2, 3, 4, 5, 6, 7); - } -} {} -do_test rtree-7.1.2 { - execsql { ALTER TABLE t4 RENAME TO t5 } - execsql { SELECT * FROM t5 } -} {1 2.0 3.0 4.0 5.0 6.0 7.0} -do_test rtree-7.1.3 { - db close - sqlite3 db test.db - execsql { SELECT * FROM t5 } -} {1 2.0 3.0 4.0 5.0 6.0 7.0} -do_test rtree-7.1.4 { - execsql { ALTER TABLE t5 RENAME TO 'raisara "one"'''} - execsql { SELECT * FROM "raisara ""one""'" } -} {1 2.0 3.0 4.0 5.0 6.0 7.0} -do_test rtree-7.1.5 { - execsql { SELECT * FROM 'raisara "one"''' } -} {1 2.0 3.0 4.0 5.0 6.0 7.0} -do_test rtree-7.1.6 { - execsql { ALTER TABLE "raisara ""one""'" RENAME TO "abc 123" } - execsql { SELECT * FROM "abc 123" } -} {1 2.0 3.0 4.0 5.0 6.0 7.0} -do_test rtree-7.1.7 { - db close - sqlite3 db test.db - execsql { SELECT * FROM "abc 123" } -} {1 2.0 3.0 4.0 5.0 6.0 7.0} - -# An error midway through a rename operation. -do_test rtree-7.2.1 { - execsql { - CREATE TABLE t4_node(a); - } - catchsql { ALTER TABLE "abc 123" RENAME TO t4 } -} {1 {SQL logic error or missing database}} -do_test rtree-7.2.2 { - execsql { SELECT * FROM "abc 123" } -} {1 2.0 3.0 4.0 5.0 6.0 7.0} -do_test rtree-7.2.3 { - execsql { - DROP TABLE t4_node; - CREATE TABLE t4_rowid(a); - } - catchsql { ALTER TABLE "abc 123" RENAME TO t4 } -} {1 {SQL logic error or missing database}} -do_test rtree-7.2.4 { - db close - sqlite3 db test.db - execsql { SELECT * FROM "abc 123" } -} {1 2.0 3.0 4.0 5.0 6.0 7.0} -do_test rtree-7.2.5 { - execsql { DROP TABLE t4_rowid } - execsql { ALTER TABLE "abc 123" RENAME TO t4 } - execsql { SELECT * FROM t4 } -} {1 2.0 3.0 4.0 5.0 6.0 7.0} - - -#---------------------------------------------------------------------------- -# Test cases rtree-8.* -# - -# Test that the function to determine if a leaf cell is part of the -# result set works. -do_test rtree-8.1.1 { - execsql { - CREATE VIRTUAL TABLE t6 USING rtree(ii, x1, x2); - INSERT INTO t6 VALUES(1, 3, 7); - INSERT INTO t6 VALUES(2, 4, 6); - } -} {} -do_test rtree-8.1.2 { execsql { SELECT ii FROM t6 WHERE x1>2 } } {1 2} -do_test rtree-8.1.3 { execsql { SELECT ii FROM t6 WHERE x1>3 } } {2} -do_test rtree-8.1.4 { execsql { SELECT ii FROM t6 WHERE x1>4 } } {} -do_test rtree-8.1.5 { execsql { SELECT ii FROM t6 WHERE x1>5 } } {} -do_test rtree-8.1.6 { execsql { SELECT ii FROM t6 WHERE x1<3 } } {} -do_test rtree-8.1.7 { execsql { SELECT ii FROM t6 WHERE x1<4 } } {1} -do_test rtree-8.1.8 { execsql { SELECT ii FROM t6 WHERE x1<5 } } {1 2} - -#---------------------------------------------------------------------------- -# Test cases rtree-9.* -# -# Test that ticket #3549 is fixed. -do_test rtree-9.1 { - execsql { - CREATE TABLE foo (id INTEGER PRIMARY KEY); - CREATE VIRTUAL TABLE bar USING rtree (id, minX, maxX, minY, maxY); - INSERT INTO foo VALUES (null); - INSERT INTO foo SELECT null FROM foo; - INSERT INTO foo SELECT null FROM foo; - INSERT INTO foo SELECT null FROM foo; - INSERT INTO foo SELECT null FROM foo; - INSERT INTO foo SELECT null FROM foo; - INSERT INTO foo SELECT null FROM foo; - DELETE FROM foo WHERE id > 40; - INSERT INTO bar SELECT NULL, 0, 0, 0, 0 FROM foo; - } -} {} - -# This used to crash. -do_test rtree-9.2 { - execsql { - SELECT count(*) FROM bar b1, bar b2, foo s1 WHERE s1.id = b1.id; - } -} {1600} -do_test rtree-9.3 { - execsql { - SELECT count(*) FROM bar b1, bar b2, foo s1 - WHERE b1.minX <= b2.maxX AND s1.id = b1.id; - } -} {1600} - -#------------------------------------------------------------------------- -# Ticket #3970: Check that the error message is meaningful when a -# keyword is used as a column name. -# -do_test rtree-10.1 { - catchsql { CREATE VIRTUAL TABLE t7 USING rtree(index, x1, y1, x2, y2) } -} {1 {near "index": syntax error}} - -#------------------------------------------------------------------------- -# Test last_insert_rowid(). -# -do_test rtree-11.1 { - execsql { - CREATE VIRTUAL TABLE t8 USING rtree(idx, x1, x2, y1, y2); - INSERT INTO t8 VALUES(1, 1.0, 1.0, 2.0, 2.0); - SELECT last_insert_rowid(); - } -} {1} -do_test rtree-11.2 { - execsql { - INSERT INTO t8 VALUES(NULL, 1.0, 1.0, 2.0, 2.0); - SELECT last_insert_rowid(); - } -} {2} - -#------------------------------------------------------------------------- -# Test on-conflict clause handling. -# -db_delete_and_reopen -do_execsql_test 12.0 { - CREATE VIRTUAL TABLE t1 USING rtree_i32(idx, x1, x2, y1, y2); - INSERT INTO t1 VALUES(1, 1, 2, 3, 4); - INSERT INTO t1 VALUES(2, 2, 3, 4, 5); - INSERT INTO t1 VALUES(3, 3, 4, 5, 6); - - CREATE TABLE source(idx, x1, x2, y1, y2); - INSERT INTO source VALUES(5, 8, 8, 8, 8); - INSERT INTO source VALUES(2, 7, 7, 7, 7); - -} -db_save_and_close -foreach {tn sql_template testdata} { - 1 "INSERT %CONF% INTO t1 VALUES(2, 7, 7, 7, 7)" { - ROLLBACK 0 1 {1 1 2 3 4 2 2 3 4 5 3 3 4 5 6} - ABORT 0 1 {1 1 2 3 4 2 2 3 4 5 3 3 4 5 6 4 4 5 6 7} - IGNORE 0 0 {1 1 2 3 4 2 2 3 4 5 3 3 4 5 6 4 4 5 6 7} - FAIL 0 1 {1 1 2 3 4 2 2 3 4 5 3 3 4 5 6 4 4 5 6 7} - REPLACE 0 0 {1 1 2 3 4 2 7 7 7 7 3 3 4 5 6 4 4 5 6 7} - } - - 2 "INSERT %CONF% INTO t1 SELECT * FROM source" { - ROLLBACK 1 1 {1 1 2 3 4 2 2 3 4 5 3 3 4 5 6} - ABORT 1 1 {1 1 2 3 4 2 2 3 4 5 3 3 4 5 6 4 4 5 6 7} - IGNORE 1 0 {1 1 2 3 4 2 2 3 4 5 3 3 4 5 6 4 4 5 6 7 5 8 8 8 8} - FAIL 1 1 {1 1 2 3 4 2 2 3 4 5 3 3 4 5 6 4 4 5 6 7 5 8 8 8 8} - REPLACE 1 0 {1 1 2 3 4 2 7 7 7 7 3 3 4 5 6 4 4 5 6 7 5 8 8 8 8} - } - - 3 "UPDATE %CONF% t1 SET idx = 2 WHERE idx = 4" { - ROLLBACK 1 1 {1 1 2 3 4 2 2 3 4 5 3 3 4 5 6} - ABORT 1 1 {1 1 2 3 4 2 2 3 4 5 3 3 4 5 6 4 4 5 6 7} - IGNORE 1 0 {1 1 2 3 4 2 2 3 4 5 3 3 4 5 6 4 4 5 6 7} - FAIL 1 1 {1 1 2 3 4 2 2 3 4 5 3 3 4 5 6 4 4 5 6 7} - REPLACE 1 0 {1 1 2 3 4 2 4 5 6 7 3 3 4 5 6} - } - - 3 "UPDATE %CONF% t1 SET idx = ((idx+1)%5)+1 WHERE idx > 2" { - ROLLBACK 1 1 {1 1 2 3 4 2 2 3 4 5 3 3 4 5 6} - ABORT 1 1 {1 1 2 3 4 2 2 3 4 5 3 3 4 5 6 4 4 5 6 7} - IGNORE 1 0 {1 1 2 3 4 2 2 3 4 5 4 4 5 6 7 5 3 4 5 6} - FAIL 1 1 {1 1 2 3 4 2 2 3 4 5 4 4 5 6 7 5 3 4 5 6} - REPLACE 1 0 {1 4 5 6 7 2 2 3 4 5 5 3 4 5 6} - } - - 4 "INSERT %CONF% INTO t1 VALUES(2, 7, 6, 7, 7)" { - ROLLBACK 0 1 {1 1 2 3 4 2 2 3 4 5 3 3 4 5 6} - ABORT 0 1 {1 1 2 3 4 2 2 3 4 5 3 3 4 5 6 4 4 5 6 7} - IGNORE 0 0 {1 1 2 3 4 2 2 3 4 5 3 3 4 5 6 4 4 5 6 7} - FAIL 0 1 {1 1 2 3 4 2 2 3 4 5 3 3 4 5 6 4 4 5 6 7} - REPLACE 0 1 {1 1 2 3 4 2 2 3 4 5 3 3 4 5 6 4 4 5 6 7} - } - -} { - foreach {mode uses error data} $testdata { - db_restore_and_reopen - - set sql [string map [list %CONF% "OR $mode"] $sql_template] - set testname "12.$tn.[string tolower $mode]" - - execsql { - BEGIN; - INSERT INTO t1 VALUES(4, 4, 5, 6, 7); - } - - set res(0) {0 {}} - set res(1) {1 {constraint failed}} - do_catchsql_test $testname.1 $sql $res($error) - do_test $testname.2 [list sql_uses_stmt db $sql] $uses - do_execsql_test $testname.3 { SELECT * FROM t1 ORDER BY idx } $data - - do_test $testname.4 { rtree_check db t1 } 0 - db close - } -} -finish_test diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree2.test b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree2.test deleted file mode 100644 index 4386e02a08..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree2.test +++ /dev/null @@ -1,150 +0,0 @@ -# 2008 Feb 19 -# -# The author disclaims copyright to this source code. In place of -# a legal notice, here is a blessing: -# -# May you do good and not evil. -# May you find forgiveness for yourself and forgive others. -# May you share freely, never taking more than you give. -# -#*********************************************************************** -# -# The focus of this file is testing the r-tree extension. -# - -if {![info exists testdir]} { - set testdir [file join [file dirname [info script]] .. .. test] -} -source [file join [file dirname [info script]] rtree_util.tcl] -source $testdir/tester.tcl - -ifcapable !rtree { - finish_test - return -} - -set ::NROW 1000 -set ::NDEL 10 -set ::NSELECT 100 - -if {[info exists G(isquick)] && $G(isquick)} { - set ::NROW 100 - set ::NSELECT 10 -} - -foreach module {rtree_i32 rtree} { - for {set nDim 1} {$nDim <= 5} {incr nDim} { - - do_test rtree2-$module.$nDim.1 { - set cols [list] - foreach c [list c0 c1 c2 c3 c4 c5 c6 c7 c8 c9] { - lappend cols "$c REAL" - } - set cols [join [lrange $cols 0 [expr {$nDim*2-1}]] ", "] - execsql " - CREATE VIRTUAL TABLE t1 USING ${module}(ii, $cols); - CREATE TABLE t2 (ii, $cols); - " - } {} - - do_test rtree2-$module.$nDim.2 { - db transaction { - for {set ii 0} {$ii < $::NROW} {incr ii} { - #puts "Row $ii" - set values [list] - for {set jj 0} {$jj<$nDim*2} {incr jj} { - lappend values [expr int(rand()*1000)] - } - set values [join $values ,] - #puts [rtree_treedump db t1] - #puts "INSERT INTO t2 VALUES($ii, $values)" - set rc [catch {db eval "INSERT INTO t1 VALUES($ii, $values)"}] - if {$rc} { - incr ii -1 - } else { - db eval "INSERT INTO t2 VALUES($ii, $values)" - } - #if {[rtree_check db t1]} { - #puts [rtree_treedump db t1] - #exit - #} - } - } - - set t1 [execsql {SELECT * FROM t1 ORDER BY ii}] - set t2 [execsql {SELECT * FROM t2 ORDER BY ii}] - set rc [expr {$t1 eq $t2}] - if {$rc != 1} { - puts $t1 - puts $t2 - } - set rc - } {1} - - do_test rtree2-$module.$nDim.3 { - rtree_check db t1 - } 0 - - set OPS [list < > <= >= =] - for {set ii 0} {$ii < $::NSELECT} {incr ii} { - do_test rtree2-$module.$nDim.4.$ii.1 { - set where [list] - foreach look_three_dots! {. . .} { - set colidx [expr int(rand()*($nDim*2+1))-1] - if {$colidx<0} { - set col ii - } else { - set col "c$colidx" - } - set op [lindex $OPS [expr int(rand()*[llength $OPS])]] - set val [expr int(rand()*1000)] - lappend where "$col $op $val" - } - set where [join $where " AND "] - - set t1 [execsql "SELECT * FROM t1 WHERE $where ORDER BY ii"] - set t2 [execsql "SELECT * FROM t2 WHERE $where ORDER BY ii"] - set rc [expr {$t1 eq $t2}] - if {$rc != 1} { - #puts $where - puts $t1 - puts $t2 - #puts [rtree_treedump db t1] - #breakpoint - #set t1 [execsql "SELECT * FROM t1 WHERE $where ORDER BY ii"] - #exit - } - set rc - } {1} - } - - for {set ii 0} {$ii < $::NROW} {incr ii $::NDEL} { - #puts [rtree_treedump db t1] - do_test rtree2-$module.$nDim.5.$ii.1 { - execsql "DELETE FROM t2 WHERE ii <= $::ii" - execsql "DELETE FROM t1 WHERE ii <= $::ii" - - set t1 [execsql {SELECT * FROM t1 ORDER BY ii}] - set t2 [execsql {SELECT * FROM t2 ORDER BY ii}] - set rc [expr {$t1 eq $t2}] - if {$rc != 1} { - puts $t1 - puts $t2 - } - set rc - } {1} - do_test rtree2-$module.$nDim.5.$ii.2 { - rtree_check db t1 - } {0} - } - - do_test rtree2-$module.$nDim.6 { - execsql { - DROP TABLE t1; - DROP TABLE t2; - } - } {} - } -} - -finish_test diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree3.test b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree3.test deleted file mode 100644 index 740794d10e..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree3.test +++ /dev/null @@ -1,237 +0,0 @@ -# 2008 Feb 19 -# -# The author disclaims copyright to this source code. In place of -# a legal notice, here is a blessing: -# -# May you do good and not evil. -# May you find forgiveness for yourself and forgive others. -# May you share freely, never taking more than you give. -# -#*********************************************************************** -# -# The focus of this file is testing that the r-tree correctly handles -# out-of-memory conditions. -# - -if {![info exists testdir]} { - set testdir [file join [file dirname [info script]] .. .. test] -} -source $testdir/tester.tcl -source $testdir/malloc_common.tcl -ifcapable !rtree { - finish_test - return -} - -# Test summary: -# -# rtree3-1: Test OOM in simple CREATE TABLE, INSERT, DELETE and SELECT -# commands on an almost empty table. -# -# rtree3-2: Test OOM in a DROP TABLE command. -# -# rtree3-3a: Test OOM during a transaction to insert 100 pseudo-random rows. -# -# rtree3-3b: Test OOM during a transaction deleting all entries in the -# database constructed in [rtree3-3a] in pseudo-random order. -# -# rtree3-4a: OOM during "SELECT count(*) FROM ..." on a big table. -# -# rtree3-4b: OOM while deleting rows from a big table. -# -# rtree3-5: Test OOM while inserting rows into a big table. -# -# rtree3-6: Test OOM while deleting all rows of a table, one at a time. -# -# rtree3-7: OOM during an ALTER TABLE RENAME TABLE command. -# -# rtree3-8: Test OOM while registering the r-tree module with sqlite. -# - -do_faultsim_test rtree3-1 -faults oom* -prep { - faultsim_delete_and_reopen -} -body { - execsql { - BEGIN TRANSACTION; - CREATE VIRTUAL TABLE rt USING rtree(ii, x1, x2, y1, y2); - INSERT INTO rt VALUES(NULL, 3, 5, 7, 9); - INSERT INTO rt VALUES(NULL, 13, 15, 17, 19); - DELETE FROM rt WHERE ii = 1; - SELECT * FROM rt; - SELECT ii FROM rt WHERE ii = 2; - COMMIT; - } -} - -do_test rtree3-2.prep { - faultsim_delete_and_reopen - execsql { - CREATE VIRTUAL TABLE rt USING rtree(ii, x1, x2, y1, y2); - INSERT INTO rt VALUES(NULL, 3, 5, 7, 9); - } - faultsim_save_and_close -} {} -do_faultsim_test rtree3-2 -faults oom* -prep { - faultsim_restore_and_reopen -} -body { - execsql { DROP TABLE rt } -} - -do_malloc_test rtree3-3.prep { - faultsim_delete_and_reopen - execsql { - CREATE VIRTUAL TABLE rt USING rtree(ii, x1, x2, y1, y2); - INSERT INTO rt VALUES(NULL, 3, 5, 7, 9); - } - faultsim_save_and_close -} {} - -do_faultsim_test rtree3-3a -faults oom* -prep { - faultsim_restore_and_reopen -} -body { - db eval BEGIN - for {set ii 0} {$ii < 100} {incr ii} { - set f [expr rand()] - db eval {INSERT INTO rt VALUES(NULL, $f*10.0, $f*10.0, $f*15.0, $f*15.0)} - } - db eval COMMIT -} -faultsim_save_and_close - -do_faultsim_test rtree3-3b -faults oom* -prep { - faultsim_restore_and_reopen -} -body { - db eval BEGIN - for {set ii 0} {$ii < 100} {incr ii} { - set f [expr rand()] - db eval { DELETE FROM rt WHERE x1<($f*10.0) AND x1>($f*10.5) } - } - db eval COMMIT -} - -do_test rtree3-4.prep { - faultsim_delete_and_reopen - execsql { - BEGIN; - PRAGMA page_size = 512; - CREATE VIRTUAL TABLE rt USING rtree(ii, x1, x2, y1, y2); - } - for {set i 0} {$i < 1500} {incr i} { - execsql { INSERT INTO rt VALUES($i, $i, $i+1, $i, $i+1) } - } - execsql { COMMIT } - faultsim_save_and_close -} {} - -do_faultsim_test rtree3-4a -faults oom-* -prep { - faultsim_restore_and_reopen -} -body { - db eval { SELECT count(*) FROM rt } -} -test { - faultsim_test_result {0 1500} -} - -do_faultsim_test rtree3-4b -faults oom-transient -prep { - faultsim_restore_and_reopen -} -body { - db eval { DELETE FROM rt WHERE ii BETWEEN 1 AND 100 } -} -test { - faultsim_test_result {0 {}} -} - -do_test rtree3-5.prep { - faultsim_delete_and_reopen - execsql { - BEGIN; - PRAGMA page_size = 512; - CREATE VIRTUAL TABLE rt USING rtree(ii, x1, x2, y1, y2); - } - for {set i 0} {$i < 100} {incr i} { - execsql { INSERT INTO rt VALUES($i, $i, $i+1, $i, $i+1) } - } - execsql { COMMIT } - faultsim_save_and_close -} {} -do_faultsim_test rtree3-5 -faults oom-* -prep { - faultsim_restore_and_reopen -} -body { - for {set i 100} {$i < 110} {incr i} { - execsql { INSERT INTO rt VALUES($i, $i, $i+1, $i, $i+1) } - } -} -test { - faultsim_test_result {0 {}} -} - -do_test rtree3-6.prep { - faultsim_delete_and_reopen - execsql { - BEGIN; - PRAGMA page_size = 512; - CREATE VIRTUAL TABLE rt USING rtree(ii, x1, x2, y1, y2); - } - for {set i 0} {$i < 50} {incr i} { - execsql { INSERT INTO rt VALUES($i, $i, $i+1, $i, $i+1) } - } - execsql { COMMIT } - faultsim_save_and_close -} {} -do_faultsim_test rtree3-6 -faults oom-* -prep { - faultsim_restore_and_reopen -} -body { - execsql BEGIN - for {set i 0} {$i < 50} {incr i} { - execsql { DELETE FROM rt WHERE ii=$i } - } - execsql COMMIT -} -test { - faultsim_test_result {0 {}} -} - -do_test rtree3-7.prep { - faultsim_delete_and_reopen - execsql { CREATE VIRTUAL TABLE rt USING rtree(ii, x1, x2, y1, y2) } - faultsim_save_and_close -} {} -do_faultsim_test rtree3-7 -faults oom-* -prep { - faultsim_restore_and_reopen -} -body { - execsql { ALTER TABLE rt RENAME TO rt2 } -} -test { - faultsim_test_result {0 {}} -} - -do_faultsim_test rtree3-8 -faults oom-* -prep { - catch { db close } -} -body { - sqlite3 db test.db -} - -do_faultsim_test rtree3-9 -faults oom-* -prep { - sqlite3 db :memory: -} -body { - set rc [register_cube_geom db] - if {$rc != "SQLITE_OK"} { error $rc } -} -test { - faultsim_test_result {0 {}} {1 SQLITE_NOMEM} -} - -do_test rtree3-10.prep { - faultsim_delete_and_reopen - execsql { - CREATE VIRTUAL TABLE rt USING rtree(ii, x1, x2, y1, y2, z1, z2); - INSERT INTO rt VALUES(1, 10, 10, 10, 11, 11, 11); - INSERT INTO rt VALUES(2, 5, 6, 6, 7, 7, 8); - } - faultsim_save_and_close -} {} -do_faultsim_test rtree3-10 -faults oom-* -prep { - faultsim_restore_and_reopen - register_cube_geom db - execsql { SELECT * FROM rt } -} -body { - execsql { SELECT ii FROM rt WHERE ii MATCH cube(4.5, 5.5, 6.5, 1, 1, 1) } -} -test { - faultsim_test_result {0 2} -} - -finish_test diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree4.test b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree4.test deleted file mode 100644 index 11f4fe640b..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree4.test +++ /dev/null @@ -1,234 +0,0 @@ -# 2008 May 23 -# -# The author disclaims copyright to this source code. In place of -# a legal notice, here is a blessing: -# -# May you do good and not evil. -# May you find forgiveness for yourself and forgive others. -# May you share freely, never taking more than you give. -# -#*********************************************************************** -# -# Randomized test cases for the rtree extension. -# - -if {![info exists testdir]} { - set testdir [file join [file dirname [info script]] .. .. test] -} -source $testdir/tester.tcl - -ifcapable !rtree { - finish_test - return -} - -set ::NROW 2500 -if {[info exists G(isquick)] && $G(isquick)} { - set ::NROW 250 -} - -# Return a floating point number between -X and X. -# -proc rand {X} { - return [expr {int((rand()-0.5)*1024.0*$X)/512.0}] -} - -# Return a positive floating point number less than or equal to X -# -proc randincr {X} { - while 1 { - set r [expr {int(rand()*$X*32.0)/32.0}] - if {$r>0.0} {return $r} - } -} - -# Scramble the $inlist into a random order. -# -proc scramble {inlist} { - set y {} - foreach x $inlist { - lappend y [list [expr {rand()}] $x] - } - set y [lsort $y] - set outlist {} - foreach x $y { - lappend outlist [lindex $x 1] - } - return $outlist -} - -# Always use the same random seed so that the sequence of tests -# is repeatable. -# -expr {srand(1234)} - -# Run these tests for all number of dimensions between 1 and 5. -# -for {set nDim 1} {$nDim<=5} {incr nDim} { - - # Construct an rtree virtual table and an ordinary btree table - # to mirror it. The ordinary table should be much slower (since - # it has to do a full table scan) but should give the exact same - # answers. - # - do_test rtree4-$nDim.1 { - set clist {} - set cklist {} - for {set i 0} {$i<$nDim} {incr i} { - lappend clist mn$i mx$i - lappend cklist "mn$i=$mn mx$j<=$mx - } - set where "WHERE [join $where { AND }]" - do_test rtree4-$nDim.2.$i.2 { - list $where [db eval "SELECT id FROM rx $where ORDER BY id"] - } [list $where [db eval "SELECT id FROM bx $where ORDER BY id"]] - - # Do an overlaps query on all dimensions - # - set where {} - for {set j 0} {$j<$nDim} {incr j} { - set mn [rand 10000] - set mx [expr {$mn+[randincr 500]}] - lappend where mx$j>=$mn mn$j<=$mx - } - set where "WHERE [join $where { AND }]" - do_test rtree4-$nDim.2.$i.3 { - list $where [db eval "SELECT id FROM rx $where ORDER BY id"] - } [list $where [db eval "SELECT id FROM bx $where ORDER BY id"]] - - # Do a contained-in query with surplus contraints at the beginning. - # This should force a full-table scan on the rtree. - # - set where {} - for {set j 0} {$j<$nDim} {incr j} { - lappend where mn$j>-10000 mx$j<10000 - } - for {set j 0} {$j<$nDim} {incr j} { - set mn [rand 10000] - set mx [expr {$mn+[randincr 500]}] - lappend where mn$j>=$mn mx$j<=$mx - } - set where "WHERE [join $where { AND }]" - do_test rtree4-$nDim.2.$i.3 { - list $where [db eval "SELECT id FROM rx $where ORDER BY id"] - } [list $where [db eval "SELECT id FROM bx $where ORDER BY id"]] - - # Do an overlaps query with surplus contraints at the beginning. - # This should force a full-table scan on the rtree. - # - set where {} - for {set j 0} {$j<$nDim} {incr j} { - lappend where mn$j>=-10000 mx$j<=10000 - } - for {set j 0} {$j<$nDim} {incr j} { - set mn [rand 10000] - set mx [expr {$mn+[randincr 500]}] - lappend where mx$j>$mn mn$j<$mx - } - set where "WHERE [join $where { AND }]" - do_test rtree4-$nDim.2.$i.4 { - list $where [db eval "SELECT id FROM rx $where ORDER BY id"] - } [list $where [db eval "SELECT id FROM bx $where ORDER BY id"]] - - # Do a contained-in query with surplus contraints at the end - # - set where {} - for {set j 0} {$j<$nDim} {incr j} { - set mn [rand 10000] - set mx [expr {$mn+[randincr 500]}] - lappend where mn$j>=$mn mx$j<$mx - } - for {set j [expr {$nDim-1}]} {$j>=0} {incr j -1} { - lappend where mn$j>=-10000 mx$j<10000 - } - set where "WHERE [join $where { AND }]" - do_test rtree4-$nDim.2.$i.5 { - list $where [db eval "SELECT id FROM rx $where ORDER BY id"] - } [list $where [db eval "SELECT id FROM bx $where ORDER BY id"]] - - # Do an overlaps query with surplus contraints at the end - # - set where {} - for {set j [expr {$nDim-1}]} {$j>=0} {incr j -1} { - set mn [rand 10000] - set mx [expr {$mn+[randincr 500]}] - lappend where mx$j>$mn mn$j<=$mx - } - for {set j 0} {$j<$nDim} {incr j} { - lappend where mx$j>-10000 mn$j<=10000 - } - set where "WHERE [join $where { AND }]" - do_test rtree4-$nDim.2.$i.6 { - list $where [db eval "SELECT id FROM rx $where ORDER BY id"] - } [list $where [db eval "SELECT id FROM bx $where ORDER BY id"]] - - # Do a contained-in query with surplus contraints where the - # constraints appear in a random order. - # - set where {} - for {set j 0} {$j<$nDim} {incr j} { - set mn1 [rand 10000] - set mn2 [expr {$mn1+[randincr 100]}] - set mx1 [expr {$mn2+[randincr 400]}] - set mx2 [expr {$mx1+[randincr 100]}] - lappend where mn$j>=$mn1 mn$j>$mn2 mx$j<$mx1 mx$j<=$mx2 - } - set where "WHERE [join [scramble $where] { AND }]" - do_test rtree4-$nDim.2.$i.7 { - list $where [db eval "SELECT id FROM rx $where ORDER BY id"] - } [list $where [db eval "SELECT id FROM bx $where ORDER BY id"]] - - # Do an overlaps query with surplus contraints where the - # constraints appear in a random order. - # - set where {} - for {set j 0} {$j<$nDim} {incr j} { - set mn1 [rand 10000] - set mn2 [expr {$mn1+[randincr 100]}] - set mx1 [expr {$mn2+[randincr 400]}] - set mx2 [expr {$mx1+[randincr 100]}] - lappend where mx$j>=$mn1 mx$j>$mn2 mn$j<$mx1 mn$j<=$mx2 - } - set where "WHERE [join [scramble $where] { AND }]" - do_test rtree4-$nDim.2.$i.8 { - list $where [db eval "SELECT id FROM rx $where ORDER BY id"] - } [list $where [db eval "SELECT id FROM bx $where ORDER BY id"]] - } - -} - -finish_test diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree5.test b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree5.test deleted file mode 100644 index 8093d63301..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree5.test +++ /dev/null @@ -1,78 +0,0 @@ -# 2008 Jul 14 -# -# The author disclaims copyright to this source code. In place of -# a legal notice, here is a blessing: -# -# May you do good and not evil. -# May you find forgiveness for yourself and forgive others. -# May you share freely, never taking more than you give. -# -#*********************************************************************** -# -# The focus of this file is testing the r-tree extension when it is -# configured to store values as 32 bit integers. -# - -if {![info exists testdir]} { - set testdir [file join [file dirname [info script]] .. .. test] -} -source $testdir/tester.tcl - -ifcapable !rtree { - finish_test - return -} - -do_test rtree5-1.0 { - execsql { CREATE VIRTUAL TABLE t1 USING rtree_i32(id, x1, x2, y1, y2) } -} {} -do_test rtree5-1.1 { - execsql { INSERT INTO t1 VALUES(1, 5, 10, 4, 11.2) } -} {} -do_test rtree5-1.2 { - execsql { SELECT * FROM t1 } -} {1 5 10 4 11} -do_test rtree5-1.3 { - execsql { SELECT typeof(x1) FROM t1 } -} {integer} - -do_test rtree5-1.4 { - execsql { SELECT x1==5 FROM t1 } -} {1} -do_test rtree5-1.5 { - execsql { SELECT x1==5.2 FROM t1 } -} {0} -do_test rtree5-1.6 { - execsql { SELECT x1==5.0 FROM t1 } -} {1} - -do_test rtree5-1.7 { - execsql { SELECT count(*) FROM t1 WHERE x1==5 } -} {1} -do_test rtree5-1.8 { - execsql { SELECT count(*) FROM t1 WHERE x1==5.2 } -} {0} -do_test rtree5-1.9 { - execsql { SELECT count(*) FROM t1 WHERE x1==5.0 } -} {1} - -do_test rtree5-1.10 { - execsql { SELECT (1<<31)-5, (1<<31)-1, -1*(1<<31), -1*(1<<31)+5 } -} {2147483643 2147483647 -2147483648 -2147483643} -do_test rtree5-1.10 { - execsql { - INSERT INTO t1 VALUES(2, (1<<31)-5, (1<<31)-1, -1*(1<<31), -1*(1<<31)+5) - } -} {} -do_test rtree5-1.12 { - execsql { SELECT * FROM t1 WHERE id=2 } -} {2 2147483643 2147483647 -2147483648 -2147483643} -do_test rtree5-1.13 { - execsql { - SELECT * FROM t1 WHERE - x1=2147483643 AND x2=2147483647 AND - y1=-2147483648 AND y2=-2147483643 - } -} {2 2147483643 2147483647 -2147483648 -2147483643} - -finish_test diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree6.test b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree6.test deleted file mode 100644 index d8790bb709..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree6.test +++ /dev/null @@ -1,156 +0,0 @@ -# 2008 Sep 1 -# -# The author disclaims copyright to this source code. In place of -# a legal notice, here is a blessing: -# -# May you do good and not evil. -# May you find forgiveness for yourself and forgive others. -# May you share freely, never taking more than you give. -# -#*********************************************************************** -# -# - -if {![info exists testdir]} { - set testdir [file join [file dirname [info script]] .. .. test] -} -source $testdir/tester.tcl - -ifcapable !rtree { - finish_test - return -} - -# Operator Byte Value -# ---------------------- -# = 0x41 ('A') -# <= 0x42 ('B') -# < 0x43 ('C') -# >= 0x44 ('D') -# > 0x45 ('E') -# ---------------------- - -proc rtree_strategy {sql} { - set ret [list] - db eval "explain $sql" a { - if {$a(opcode) eq "VFilter"} { - lappend ret $a(p4) - } - } - set ret -} - -proc query_plan {sql} { - set ret [list] - db eval "explain query plan $sql" a { - lappend ret $a(detail) - } - set ret -} - -do_test rtree6-1.1 { - execsql { - CREATE TABLE t2(k INTEGER PRIMARY KEY, v); - CREATE VIRTUAL TABLE t1 USING rtree(ii, x1, x2, y1, y2); - } -} {} - -do_test rtree6-1.2 { - rtree_strategy {SELECT * FROM t1 WHERE x1>10} -} {Ea} - -do_test rtree6-1.3 { - rtree_strategy {SELECT * FROM t1 WHERE x1<10} -} {Ca} - -do_test rtree6-1.4 { - rtree_strategy {SELECT * FROM t1,t2 WHERE k=ii AND x1<10} -} {Ca} - -do_test rtree6-1.5 { - rtree_strategy {SELECT * FROM t1,t2 WHERE k=+ii AND x1<10} -} {Ca} - -do_eqp_test rtree6.2.1 { - SELECT * FROM t1,t2 WHERE k=+ii AND x1<10 -} { - 0 0 0 {SCAN TABLE t1 VIRTUAL TABLE INDEX 2:Ca (~0 rows)} - 0 1 1 {SEARCH TABLE t2 USING INTEGER PRIMARY KEY (rowid=?) (~1 rows)} -} - -do_eqp_test rtree6.2.2 { - SELECT * FROM t1,t2 WHERE k=ii AND x1<10 -} { - 0 0 0 {SCAN TABLE t1 VIRTUAL TABLE INDEX 2:Ca (~0 rows)} - 0 1 1 {SEARCH TABLE t2 USING INTEGER PRIMARY KEY (rowid=?) (~1 rows)} -} - -do_eqp_test rtree6.2.3 { - SELECT * FROM t1,t2 WHERE k=ii -} { - 0 0 0 {SCAN TABLE t1 VIRTUAL TABLE INDEX 2: (~0 rows)} - 0 1 1 {SEARCH TABLE t2 USING INTEGER PRIMARY KEY (rowid=?) (~1 rows)} -} - -do_eqp_test rtree6.2.4 { - SELECT * FROM t1,t2 WHERE v=10 and x1<10 and x2>10 -} { - 0 0 0 {SCAN TABLE t1 VIRTUAL TABLE INDEX 2:CaEb (~0 rows)} - 0 1 1 {SCAN TABLE t2 (~100000 rows)} -} - -do_eqp_test rtree6.2.5 { - SELECT * FROM t1,t2 WHERE k=ii AND x10.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND - x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND - x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND - x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND - x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND - x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5; -} {1 1.0 1.0 2.0 2.0} - -do_test rtree6.3.2 { - rtree_strategy { - SELECT * FROM t3 WHERE - x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND - x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND - x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND - x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 - } -} {EaEaEaEaEaEaEaEaEaEaEaEaEaEaEaEaEaEaEaEa} -do_test rtree6.3.3 { - rtree_strategy { - SELECT * FROM t3 WHERE - x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND - x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND - x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND - x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND - x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND - x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 - } -} {EaEaEaEaEaEaEaEaEaEaEaEaEaEaEaEaEaEaEaEa} - -do_execsql_test rtree6-3.4 { - SELECT * FROM t3 WHERE x1>0.5 AND x1>0.8 AND x1>1.1 -} {} -do_execsql_test rtree6-3.5 { - SELECT * FROM t3 WHERE - x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND - x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND - x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND - x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND - x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND - x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>0.5 AND x1>1.1 -} {} - - -finish_test diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree7.test b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree7.test deleted file mode 100644 index 5316576f7b..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree7.test +++ /dev/null @@ -1,58 +0,0 @@ -# 2010 February 16 -# -# The author disclaims copyright to this source code. In place of -# a legal notice, here is a blessing: -# -# May you do good and not evil. -# May you find forgiveness for yourself and forgive others. -# May you share freely, never taking more than you give. -# -#*********************************************************************** -# -# Test that nothing goes wrong if an rtree table is created, then the -# database page-size is modified. At one point (3.6.22), this was causing -# malfunctions. -# - -if {![info exists testdir]} { - set testdir [file join [file dirname [info script]] .. .. test] -} -source $testdir/tester.tcl - -ifcapable !rtree||!vacuum { - finish_test - return -} - -do_test rtree7-1.1 { - execsql { - PRAGMA page_size = 1024; - CREATE VIRTUAL TABLE rt USING rtree(id, x1, x2, y1, y2); - INSERT INTO rt VALUES(1, 1, 2, 3, 4); - } -} {} -do_test rtree7-1.2 { - execsql { SELECT * FROM rt } -} {1 1.0 2.0 3.0 4.0} -do_test rtree7-1.3 { - execsql { - PRAGMA page_size = 2048; - VACUUM; - SELECT * FROM rt; - } -} {1 1.0 2.0 3.0 4.0} -do_test rtree7-1.4 { - for {set i 2} {$i <= 51} {incr i} { - execsql { INSERT INTO rt VALUES($i, 1, 2, 3, 4) } - } - execsql { SELECT sum(x1), sum(x2), sum(y1), sum(y2) FROM rt } -} {51.0 102.0 153.0 204.0} -do_test rtree7-1.5 { - execsql { - PRAGMA page_size = 512; - VACUUM; - SELECT sum(x1), sum(x2), sum(y1), sum(y2) FROM rt - } -} {51.0 102.0 153.0 204.0} - -finish_test diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree8.test b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree8.test deleted file mode 100644 index 0b144dc7ca..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree8.test +++ /dev/null @@ -1,171 +0,0 @@ -# 2010 February 16 -# -# The author disclaims copyright to this source code. In place of -# a legal notice, here is a blessing: -# -# May you do good and not evil. -# May you find forgiveness for yourself and forgive others. -# May you share freely, never taking more than you give. -# -#*********************************************************************** -# -# - -if {![info exists testdir]} { - set testdir [file join [file dirname [info script]] .. .. test] -} -source $testdir/tester.tcl -ifcapable !rtree { finish_test ; return } - -#------------------------------------------------------------------------- -# The following block of tests - rtree8-1.* - feature reading and writing -# an r-tree table while there exist open cursors on it. -# -proc populate_t1 {n} { - execsql { DELETE FROM t1 } - for {set i 1} {$i <= $n} {incr i} { - execsql { INSERT INTO t1 VALUES($i, $i, $i+2) } - } -} - -# A DELETE while a cursor is reading the table. -# -do_test rtree8-1.1.1 { - execsql { PRAGMA page_size = 512 } - execsql { CREATE VIRTUAL TABLE t1 USING rtree_i32(id, x1, x2) } - populate_t1 5 -} {} -do_test rtree8-1.1.2 { - set res [list] - db eval { SELECT * FROM t1 } { - lappend res $x1 $x2 - if {$id==3} { db eval { DELETE FROM t1 WHERE id>3 } } - } - set res -} {1 3 2 4 3 5} -do_test rtree8-1.1.3 { - execsql { SELECT * FROM t1 } -} {1 1 3 2 2 4 3 3 5} - -# Many SELECTs on the same small table. -# -proc nested_select {n} { - set ::max $n - db eval { SELECT * FROM t1 } { - if {$id == $n} { nested_select [expr $n+1] } - } - return $::max -} -do_test rtree8-1.2.1 { populate_t1 50 } {} -do_test rtree8-1.2.2 { nested_select 1 } {51} - -# This test runs many SELECT queries simultaneously against a large -# table, causing a collision in the hash-table used to store r-tree -# nodes internally. -# -populate_t1 1500 -do_execsql_test rtree8-1.3.1 { SELECT max(nodeno) FROM t1_node } {164} -do_test rtree8-1.3.2 { - set rowids [execsql {SELECT min(rowid) FROM t1_rowid GROUP BY nodeno}] - set stmt_list [list] - foreach row $rowids { - set stmt [sqlite3_prepare db "SELECT * FROM t1 WHERE id = $row" -1 tail] - sqlite3_step $stmt - lappend res_list [sqlite3_column_int $stmt 0] - lappend stmt_list $stmt - } -} {} -do_test rtree8-1.3.3 { set res_list } $rowids -do_execsql_test rtree8-1.3.4 { SELECT count(*) FROM t1 } {1500} -do_test rtree8-1.3.5 { - foreach stmt $stmt_list { sqlite3_finalize $stmt } -} {} - - -#------------------------------------------------------------------------- -# The following block of tests - rtree8-2.* - test a couple of database -# corruption cases. In this case things are not corrupted at the b-tree -# level, but the contents of the various tables used internally by an -# r-tree table are inconsistent. -# -populate_t1 50 -do_execsql_test rtree8-2.1.1 { SELECT max(nodeno) FROM t1_node } {5} -do_execsql_test rtree8-2.1.2 { DELETE FROM t1_node } {} -for {set i 1} {$i <= 50} {incr i} { - do_catchsql_test rtree8-2.1.3.$i { - SELECT * FROM t1 WHERE id = $i - } {1 {database disk image is malformed}} -} -do_catchsql_test rtree8-2.1.4 { - SELECT * FROM t1 -} {1 {database disk image is malformed}} -do_catchsql_test rtree8-2.1.5 { - DELETE FROM t1 -} {1 {database disk image is malformed}} - -do_execsql_test rtree8-2.1.6 { - DROP TABLE t1; - CREATE VIRTUAL TABLE t1 USING rtree_i32(id, x1, x2); -} {} - - -populate_t1 50 -do_execsql_test rtree8-2.2.1 { - DELETE FROM t1_parent -} {} -do_catchsql_test rtree8-2.2.2 { - DELETE FROM t1 WHERE id=25 -} {1 {database disk image is malformed}} -do_execsql_test rtree8-2.2.3 { - DROP TABLE t1; - CREATE VIRTUAL TABLE t1 USING rtree_i32(id, x1, x2); -} {} - - -#------------------------------------------------------------------------- -# Test that trying to use the MATCH operator with the r-tree module does -# not confuse it. -# -populate_t1 10 -do_catchsql_test rtree8-3.1 { - SELECT * FROM t1 WHERE x1 MATCH '1234' -} {1 {SQL logic error or missing database}} - -#------------------------------------------------------------------------- -# Test a couple of invalid arguments to rtreedepth(). -# -do_catchsql_test rtree8-4.1 { - SELECT rtreedepth('hello world') -} {1 {Invalid argument to rtreedepth()}} -do_catchsql_test rtree8-4.2 { - SELECT rtreedepth(X'00') -} {1 {Invalid argument to rtreedepth()}} - - -#------------------------------------------------------------------------- -# Delete half of a lopsided tree. -# -do_execsql_test rtree8-5.1 { - CREATE VIRTUAL TABLE t2 USING rtree_i32(id, x1, x2) -} {} -do_test rtree8-5.2 { - execsql BEGIN - for {set i 0} {$i < 100} {incr i} { - execsql { INSERT INTO t2 VALUES($i, 100, 101) } - } - for {set i 100} {$i < 200} {incr i} { - execsql { INSERT INTO t2 VALUES($i, 1000, 1001) } - } - execsql COMMIT -} {} -do_test rtree8-5.3 { - execsql BEGIN - for {set i 0} {$i < 200} {incr i} { - execsql { DELETE FROM t2 WHERE id = $i } - } - execsql COMMIT -} {} - - -finish_test - diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree9.test b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree9.test deleted file mode 100644 index 5d51b7a047..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree9.test +++ /dev/null @@ -1,125 +0,0 @@ -# 2010 August 28 -# -# The author disclaims copyright to this source code. In place of -# a legal notice, here is a blessing: -# -# May you do good and not evil. -# May you find forgiveness for yourself and forgive others. -# May you share freely, never taking more than you give. -# -#*********************************************************************** -# This file contains tests for the r-tree module. Specifically, it tests -# that custom r-tree queries (geometry callbacks) work. -# - -if {![info exists testdir]} { - set testdir [file join [file dirname [info script]] .. .. test] -} -source $testdir/tester.tcl -ifcapable !rtree { finish_test ; return } - -register_cube_geom db - -do_execsql_test rtree9-1.1 { - CREATE VIRTUAL TABLE rt USING rtree(id, x1, x2, y1, y2, z1, z2); - INSERT INTO rt VALUES(1, 1, 2, 1, 2, 1, 2); -} {} -do_execsql_test rtree9-1.2 { - SELECT * FROM rt WHERE id MATCH cube(0, 0, 0, 2, 2, 2); -} {1 1.0 2.0 1.0 2.0 1.0 2.0} -do_execsql_test rtree9-1.3 { - SELECT * FROM rt WHERE id MATCH cube(3, 3, 3, 2, 2, 2); -} {} -do_execsql_test rtree9-1.4 { - DELETE FROM rt; -} {} - - -for {set i 0} {$i < 1000} {incr i} { - set x [expr $i%10] - set y [expr ($i/10)%10] - set z [expr ($i/100)%10] - execsql { INSERT INTO rt VALUES($i, $x, $x+1, $y, $y+1, $z, $z+1) } -} -do_execsql_test rtree9-2.1 { - SELECT id FROM rt WHERE id MATCH cube(2.5, 2.5, 2.5, 1, 1, 1) ORDER BY id; -} {222 223 232 233 322 323 332 333} -do_execsql_test rtree9-2.2 { - SELECT id FROM rt WHERE id MATCH cube(5.5, 5.5, 5.5, 1, 1, 1) ORDER BY id; -} {555 556 565 566 655 656 665 666} - - -do_execsql_test rtree9-3.1 { - CREATE VIRTUAL TABLE rt32 USING rtree_i32(id, x1, x2, y1, y2, z1, z2); -} {} -for {set i 0} {$i < 1000} {incr i} { - set x [expr $i%10] - set y [expr ($i/10)%10] - set z [expr ($i/100)%10] - execsql { INSERT INTO rt32 VALUES($i, $x, $x+1, $y, $y+1, $z, $z+1) } -} -do_execsql_test rtree9-3.2 { - SELECT id FROM rt32 WHERE id MATCH cube(3, 3, 3, 1, 1, 1) ORDER BY id; -} {222 223 224 232 233 234 242 243 244 322 323 324 332 333 334 342 343 344 422 423 424 432 433 434 442 443 444} -do_execsql_test rtree9-3.3 { - SELECT id FROM rt32 WHERE id MATCH cube(5.5, 5.5, 5.5, 1, 1, 1) ORDER BY id; -} {555 556 565 566 655 656 665 666} - - -do_catchsql_test rtree9-4.1 { - SELECT id FROM rt32 WHERE id MATCH cube(5.5, 5.5, 1, 1, 1) ORDER BY id; -} {1 {SQL logic error or missing database}} -for {set x 2} {$x<200} {incr x 2} { - do_catchsql_test rtree9-4.2.[expr $x/2] { - SELECT id FROM rt WHERE id MATCH randomblob($x) - } {1 {SQL logic error or missing database}} -} -do_catchsql_test rtree9-4.3 { - SELECT id FROM rt WHERE id MATCH CAST( - (cube(5.5, 5.5, 5.5, 1, 1, 1) || X'1234567812345678') AS blob - ) -} {1 {SQL logic error or missing database}} - - -#------------------------------------------------------------------------- -# Test the example 2d "circle" geometry callback. -# -register_circle_geom db - -breakpoint -do_execsql_test rtree9-5.1 { - CREATE VIRTUAL TABLE rt2 USING rtree(id, xmin, xmax, ymin, ymax); - - INSERT INTO rt2 VALUES(1, 1, 2, 1, 2); - INSERT INTO rt2 VALUES(2, 1, 2, -2, -1); - INSERT INTO rt2 VALUES(3, -2, -1, -2, -1); - INSERT INTO rt2 VALUES(4, -2, -1, 1, 2); - - INSERT INTO rt2 VALUES(5, 2, 3, 2, 3); - INSERT INTO rt2 VALUES(6, 2, 3, -3, -2); - INSERT INTO rt2 VALUES(7, -3, -2, -3, -2); - INSERT INTO rt2 VALUES(8, -3, -2, 2, 3); - - INSERT INTO rt2 VALUES(9, 1.8, 3, 1.8, 3); - INSERT INTO rt2 VALUES(10, 1.8, 3, -3, -1.8); - INSERT INTO rt2 VALUES(11, -3, -1.8, -3, -1.8); - INSERT INTO rt2 VALUES(12, -3, -1.8, 1.8, 3); - - INSERT INTO rt2 VALUES(13, -15, 15, 1.8, 2.2); - INSERT INTO rt2 VALUES(14, -15, 15, -2.2, -1.8); - INSERT INTO rt2 VALUES(15, 1.8, 2.2, -15, 15); - INSERT INTO rt2 VALUES(16, -2.2, -1.8, -15, 15); - - INSERT INTO rt2 VALUES(17, -100, 100, -100, 100); -} {} - -do_execsql_test rtree9-5.2 { - SELECT id FROM rt2 WHERE id MATCH circle(0.0, 0.0, 2.0); -} {1 2 3 4 13 14 15 16 17} - -do_execsql_test rtree9-5.3 { - UPDATE rt2 SET xmin=xmin+5, ymin=ymin+5, xmax=xmax+5, ymax=ymax+5; - SELECT id FROM rt2 WHERE id MATCH circle(5.0, 5.0, 2.0); -} {1 2 3 4 13 14 15 16 17} - -finish_test diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtreeA.test b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtreeA.test deleted file mode 100644 index be05e2ce06..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtreeA.test +++ /dev/null @@ -1,220 +0,0 @@ -# 2010 September 22 -# -# The author disclaims copyright to this source code. In place of -# a legal notice, here is a blessing: -# -# May you do good and not evil. -# May you find forgiveness for yourself and forgive others. -# May you share freely, never taking more than you give. -# -#*********************************************************************** -# This file contains tests for the r-tree module. Specifically, it tests -# that corrupt or inconsistent databases do not cause crashes in the r-tree -# module. -# - -if {![info exists testdir]} { - set testdir [file join [file dirname [info script]] .. .. test] -} -source $testdir/tester.tcl -ifcapable !rtree { finish_test ; return } - -proc create_t1 {} { - db close - forcedelete test.db - sqlite3 db test.db - execsql { - PRAGMA page_size = 1024; - CREATE VIRTUAL TABLE t1 USING rtree(id, x1, x2, y1, y2); - } -} -proc populate_t1 {} { - execsql BEGIN - for {set i 0} {$i < 500} {incr i} { - set x2 [expr $i+5] - set y2 [expr $i+5] - execsql { INSERT INTO t1 VALUES($i, $i, $x2, $i, $y2) } - } - execsql COMMIT -} - -proc truncate_node {nodeno nTrunc} { - set blob [db one {SELECT data FROM t1_node WHERE nodeno=$nodeno}] - if {$nTrunc<0} {set nTrunc "end-$nTrunc"} - set blob [string range $blob 0 $nTrunc] - db eval { UPDATE t1_node SET data = $blob WHERE nodeno=$nodeno } -} - -proc set_tree_depth {tbl {newvalue ""}} { - set blob [db one "SELECT data FROM ${tbl}_node WHERE nodeno=1"] - - if {$newvalue == ""} { - binary scan $blob Su oldvalue - return $oldvalue - } - - set blob [binary format Sua* $newvalue [string range $blob 2 end]] - db eval "UPDATE ${tbl}_node SET data = \$blob WHERE nodeno=1" - return [set_tree_depth $tbl] -} - -proc set_entry_count {tbl nodeno {newvalue ""}} { - set blob [db one "SELECT data FROM ${tbl}_node WHERE nodeno=$nodeno"] - - if {$newvalue == ""} { - binary scan [string range $blob 2 end] Su oldvalue - return $oldvalue - } - - set blob [binary format a*Sua* \ - [string range $blob 0 1] $newvalue [string range $blob 4 end] - ] - db eval "UPDATE ${tbl}_node SET data = \$blob WHERE nodeno=$nodeno" - return [set_entry_count $tbl $nodeno] -} - - -proc do_corruption_tests {prefix args} { - set testarray [lindex $args end] - set errormsg {database disk image is malformed} - - foreach {z value} [lrange $args 0 end-1] { - set n [string length $z] - if {$n>=2 && [string equal -length $n $z "-error"]} { - set errormsg $value - } - } - - foreach {tn sql} $testarray { - do_catchsql_test $prefix.$tn $sql [list 1 $errormsg] - } -} - -#------------------------------------------------------------------------- -# Test the libraries response if the %_node table is completely empty -# (i.e. the root node is missing), or has been removed from the database -# entirely. -# -create_t1 -populate_t1 -do_execsql_test rtreeA-1.0 { - DELETE FROM t1_node; -} {} - -do_corruption_tests rtreeA-1.1 { - 1 "SELECT * FROM t1" - 2 "SELECT * FROM t1 WHERE rowid=5" - 3 "INSERT INTO t1 VALUES(1000, 1, 2, 3, 4)" - 4 "SELECT * FROM t1 WHERE x1<10 AND x2>12" -} - -do_execsql_test rtreeA-1.2.0 { DROP TABLE t1_node } {} -do_corruption_tests rtreeA-1.2 -error "SQL logic error or missing database" { - 1 "SELECT * FROM t1" - 2 "SELECT * FROM t1 WHERE rowid=5" - 3 "INSERT INTO t1 VALUES(1000, 1, 2, 3, 4)" - 4 "SELECT * FROM t1 WHERE x1<10 AND x2>12" -} - -#------------------------------------------------------------------------- -# Test the libraries response if some of the entries in the %_node table -# are the wrong size. -# -create_t1 -populate_t1 -do_test rtreeA-2.1.0 { - set nodes [db eval {select nodeno FROM t1_node}] - foreach {a b c} $nodes { truncate_node $c 200 } -} {} -do_corruption_tests rtreeA-2.1 { - 1 "SELECT * FROM t1" - 2 "SELECT * FROM t1 WHERE rowid=5" - 3 "INSERT INTO t1 VALUES(1000, 1, 2, 3, 4)" - 4 "SELECT * FROM t1 WHERE x1<10 AND x2>12" -} - -create_t1 -populate_t1 -do_test rtreeA-2.2.0 { truncate_node 1 200 } {} -do_corruption_tests rtreeA-2.2 { - 1 "SELECT * FROM t1" - 2 "SELECT * FROM t1 WHERE rowid=5" - 3 "INSERT INTO t1 VALUES(1000, 1, 2, 3, 4)" - 4 "SELECT * FROM t1 WHERE x1<10 AND x2>12" -} - -#------------------------------------------------------------------------- -# Set the "depth" of the tree stored on the root node incorrectly. Test -# that this does not cause any problems. -# -create_t1 -populate_t1 -do_test rtreeA-3.1.0.1 { set_tree_depth t1 } {1} -do_test rtreeA-3.1.0.2 { set_tree_depth t1 3 } {3} -do_corruption_tests rtreeA-3.1 { - 1 "SELECT * FROM t1" - 2 "SELECT * FROM t1 WHERE rowid=5" - 3 "INSERT INTO t1 VALUES(1000, 1, 2, 3, 4)" -} - -do_test rtreeA-3.2.0 { set_tree_depth t1 1000 } {1000} -do_corruption_tests rtreeA-3.2 { - 1 "SELECT * FROM t1" - 2 "SELECT * FROM t1 WHERE rowid=5" - 3 "INSERT INTO t1 VALUES(1000, 1, 2, 3, 4)" -} - -create_t1 -populate_t1 -do_test rtreeA-3.3.0 { - execsql { DELETE FROM t1 WHERE rowid = 0 } - set_tree_depth t1 65535 -} {65535} -do_corruption_tests rtreeA-3.3 { - 1 "SELECT * FROM t1" - 2 "SELECT * FROM t1 WHERE rowid=5" - 3 "INSERT INTO t1 VALUES(1000, 1, 2, 3, 4)" -} - -#------------------------------------------------------------------------- -# Set the "number of entries" field on some nodes incorrectly. -# -create_t1 -populate_t1 -do_test rtreeA-4.1.0 { - set_entry_count t1 1 4000 -} {4000} -do_corruption_tests rtreeA-4.1 { - 1 "SELECT * FROM t1" - 2 "SELECT * FROM t1 WHERE rowid=5" - 3 "INSERT INTO t1 VALUES(1000, 1, 2, 3, 4)" - 4 "SELECT * FROM t1 WHERE x1<10 AND x2>12" -} - -#------------------------------------------------------------------------- -# Remove entries from the %_parent table and check that this does not -# cause a crash. -# -create_t1 -populate_t1 -do_execsql_test rtreeA-5.1.0 { DELETE FROM t1_parent } {} -do_corruption_tests rtreeA-5.1 { - 1 "DELETE FROM t1 WHERE rowid = 5" - 2 "DELETE FROM t1" -} - -#------------------------------------------------------------------------- -# Add some bad entries to the %_parent table. -# -create_t1 -populate_t1 -do_execsql_test rtreeA-6.1.0 { - UPDATE t1_parent set parentnode = parentnode+1 -} {} -do_corruption_tests rtreeA-6.1 { - 1 "DELETE FROM t1 WHERE rowid = 5" - 2 "UPDATE t1 SET x1=x1+1, x2=x2+1" -} - - -finish_test diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtreeB.test b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtreeB.test deleted file mode 100644 index f3d726b698..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtreeB.test +++ /dev/null @@ -1,34 +0,0 @@ -# 2011 March 2 -# -# The author disclaims copyright to this source code. In place of -# a legal notice, here is a blessing: -# -# May you do good and not evil. -# May you find forgiveness for yourself and forgive others. -# May you share freely, never taking more than you give. -# -#*********************************************************************** -# Make sure the rtreenode() testing function can handle entries with -# 64-bit rowids. -# - -if {![info exists testdir]} { - set testdir [file join [file dirname [info script]] .. .. test] -} -source $testdir/tester.tcl -ifcapable !rtree { finish_test ; return } - -do_test rtreeB-1.1 { - db eval { - CREATE VIRTUAL TABLE t1 USING rtree(ii, x0, y0, x1, y1); - INSERT INTO t1 VALUES(1073741824, 0.0, 0.0, 100.0, 100.0); - INSERT INTO t1 VALUES(2147483646, 0.0, 0.0, 200.0, 200.0); - INSERT INTO t1 VALUES(4294967296, 0.0, 0.0, 300.0, 300.0); - INSERT INTO t1 VALUES(8589934592, 20.0, 20.0, 150.0, 150.0); - INSERT INTO t1 VALUES(9223372036854775807, 150, 150, 400, 400); - SELECT rtreenode(2, data) FROM t1_node; - } -} {{{1073741824 0.000000 0.000000 100.000000 100.000000} {2147483646 0.000000 0.000000 200.000000 200.000000} {4294967296 0.000000 0.000000 300.000000 300.000000} {8589934592 20.000000 20.000000 150.000000 150.000000} {9223372036854775807 150.000000 150.000000 400.000000 400.000000}}} - - -finish_test diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree_perf.tcl b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree_perf.tcl deleted file mode 100644 index 5a21cc6a27..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree_perf.tcl +++ /dev/null @@ -1,74 +0,0 @@ - -set testdir [file join [file dirname $argv0] .. .. test] -source $testdir/tester.tcl - -ifcapable !rtree { - finish_test - return -} - -set NROW 10000 -set NQUERY 500 - -puts "Generating $NROW rows of data..." -set data [list] -for {set ii 0} {$ii < $NROW} {incr ii} { - set x1 [expr {rand()*1000}] - set x2 [expr {$x1+rand()*50}] - set y1 [expr {rand()*1000}] - set y2 [expr {$y1+rand()*50}] - lappend data $x1 $x2 $y1 $y2 -} -puts "Finished generating data" - - -set sql1 {CREATE TABLE btree(ii INTEGER PRIMARY KEY, x1, x2, y1, y2)} -set sql2 {CREATE VIRTUAL TABLE rtree USING rtree(ii, x1, x2, y1, y2)} -puts "Creating tables:" -puts " $sql1" -puts " $sql2" -db eval $sql1 -db eval $sql2 - -db eval "pragma cache_size=100" - -puts -nonewline "Inserting into btree... " -flush stdout -set btree_time [time {db transaction { - set ii 1 - foreach {x1 x2 y1 y2} $data { - db eval {INSERT INTO btree VALUES($ii, $x1, $x2, $y1, $y2)} - incr ii - } -}}] -puts "$btree_time" - -puts -nonewline "Inserting into rtree... " -flush stdout -set rtree_time [time {db transaction { - set ii 1 - foreach {x1 x2 y1 y2} $data { - incr ii - db eval {INSERT INTO rtree VALUES($ii, $x1, $x2, $y1, $y2)} - } -}}] -puts "$rtree_time" - - -puts -nonewline "Selecting from btree... " -flush stdout -set btree_select_time [time { - foreach {x1 x2 y1 y2} [lrange $data 0 [expr $NQUERY*4-1]] { - db eval {SELECT * FROM btree WHERE x1<$x1 AND x2>$x2 AND y1<$y1 AND y2>$y2} - } -}] -puts "$btree_select_time" - -puts -nonewline "Selecting from rtree... " -flush stdout -set rtree_select_time [time { - foreach {x1 x2 y1 y2} [lrange $data 0 [expr $NQUERY*4-1]] { - db eval {SELECT * FROM rtree WHERE x1<$x1 AND x2>$x2 AND y1<$y1 AND y2>$y2} - } -}] -puts "$rtree_select_time" diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree_util.tcl b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree_util.tcl deleted file mode 100644 index f995067ce4..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/rtree_util.tcl +++ /dev/null @@ -1,192 +0,0 @@ -# 2008 Feb 19 -# -# The author disclaims copyright to this source code. In place of -# a legal notice, here is a blessing: -# -# May you do good and not evil. -# May you find forgiveness for yourself and forgive others. -# May you share freely, never taking more than you give. -# -#*********************************************************************** -# -# This file contains Tcl code that may be useful for testing or -# analyzing r-tree structures created with this module. It is -# used by both test procedures and the r-tree viewer application. -# - - -#-------------------------------------------------------------------------- -# PUBLIC API: -# -# rtree_depth -# rtree_ndim -# rtree_node -# rtree_mincells -# rtree_check -# rtree_dump -# rtree_treedump -# - -proc rtree_depth {db zTab} { - $db one "SELECT rtreedepth(data) FROM ${zTab}_node WHERE nodeno=1" -} - -proc rtree_nodedepth {db zTab iNode} { - set iDepth [rtree_depth $db $zTab] - - set ii $iNode - while {$ii != 1} { - set sql "SELECT parentnode FROM ${zTab}_parent WHERE nodeno = $ii" - set ii [db one $sql] - incr iDepth -1 - } - - return $iDepth -} - -# Return the number of dimensions of the rtree. -# -proc rtree_ndim {db zTab} { - set nDim [expr {(([llength [$db eval "pragma table_info($zTab)"]]/6)-1)/2}] -} - -# Return the contents of rtree node $iNode. -# -proc rtree_node {db zTab iNode {iPrec 6}} { - set nDim [rtree_ndim $db $zTab] - set sql " - SELECT rtreenode($nDim, data) FROM ${zTab}_node WHERE nodeno = $iNode - " - set node [db one $sql] - - set nCell [llength $node] - set nCoord [expr $nDim*2] - for {set ii 0} {$ii < $nCell} {incr ii} { - for {set jj 1} {$jj <= $nCoord} {incr jj} { - set newval [format "%.${iPrec}f" [lindex $node $ii $jj]] - lset node $ii $jj $newval - } - } - set node -} - -proc rtree_mincells {db zTab} { - set n [$db one "select length(data) FROM ${zTab}_node LIMIT 1"] - set nMax [expr {int(($n-4)/(8+[rtree_ndim $db $zTab]*2*4))}] - return [expr {int($nMax/3)}] -} - -# An integrity check for the rtree $zTab accessible via database -# connection $db. -# -proc rtree_check {db zTab} { - array unset ::checked - - # Check each r-tree node. - set rc [catch { - rtree_node_check $db $zTab 1 [rtree_depth $db $zTab] - } msg] - if {$rc && $msg ne ""} { error $msg } - - # Check that the _rowid and _parent tables have the right - # number of entries. - set nNode [$db one "SELECT count(*) FROM ${zTab}_node"] - set nRow [$db one "SELECT count(*) FROM ${zTab}"] - set nRowid [$db one "SELECT count(*) FROM ${zTab}_rowid"] - set nParent [$db one "SELECT count(*) FROM ${zTab}_parent"] - - if {$nNode != ($nParent+1)} { - error "Wrong number of entries in ${zTab}_parent" - } - if {$nRow != $nRowid} { - error "Wrong number of entries in ${zTab}_rowid" - } - - return $rc -} - -proc rtree_node_check {db zTab iNode iDepth} { - if {[info exists ::checked($iNode)]} { error "Second ref to $iNode" } - set ::checked($iNode) 1 - - set node [rtree_node $db $zTab $iNode] - if {$iNode!=1 && [llength $node]==0} { error "No such node: $iNode" } - - if {$iNode != 1 && [llength $node]<[rtree_mincells $db $zTab]} { - puts "Node $iNode: Has only [llength $node] cells" - error "" - } - if {$iNode == 1 && [llength $node]==1 && [rtree_depth $db $zTab]>0} { - set depth [rtree_depth $db $zTab] - puts "Node $iNode: Has only 1 child (tree depth is $depth)" - error "" - } - - set nDim [expr {([llength [lindex $node 0]]-1)/2}] - - if {$iDepth > 0} { - set d [expr $iDepth-1] - foreach cell $node { - set shouldbe [rtree_node_check $db $zTab [lindex $cell 0] $d] - if {$cell ne $shouldbe} { - puts "Node $iNode: Cell is: {$cell}, should be {$shouldbe}" - error "" - } - } - } - - set mapping_table "${zTab}_parent" - set mapping_sql "SELECT parentnode FROM $mapping_table WHERE rowid = \$rowid" - if {$iDepth==0} { - set mapping_table "${zTab}_rowid" - set mapping_sql "SELECT nodeno FROM $mapping_table WHERE rowid = \$rowid" - } - foreach cell $node { - set rowid [lindex $cell 0] - set mapping [db one $mapping_sql] - if {$mapping != $iNode} { - puts "Node $iNode: $mapping_table entry for cell $rowid is $mapping" - error "" - } - } - - set ret [list $iNode] - for {set ii 1} {$ii <= $nDim*2} {incr ii} { - set f [lindex $node 0 $ii] - foreach cell $node { - set f2 [lindex $cell $ii] - if {($ii%2)==1 && $f2<$f} {set f $f2} - if {($ii%2)==0 && $f2>$f} {set f $f2} - } - lappend ret $f - } - return $ret -} - -proc rtree_dump {db zTab} { - set zRet "" - set nDim [expr {(([llength [$db eval "pragma table_info($zTab)"]]/6)-1)/2}] - set sql "SELECT nodeno, rtreenode($nDim, data) AS node FROM ${zTab}_node" - $db eval $sql { - append zRet [format "% -10s %s\n" $nodeno $node] - } - set zRet -} - -proc rtree_nodetreedump {db zTab zIndent iDepth iNode} { - set ret "" - set node [rtree_node $db $zTab $iNode 1] - append ret [format "%-3d %s%s\n" $iNode $zIndent $node] - if {$iDepth>0} { - foreach cell $node { - set i [lindex $cell 0] - append ret [rtree_nodetreedump $db $zTab "$zIndent " [expr $iDepth-1] $i] - } - } - set ret -} - -proc rtree_treedump {db zTab} { - set d [rtree_depth $db $zTab] - rtree_nodetreedump $db $zTab "" $d 1 -} diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/sqlite3rtree.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/sqlite3rtree.h deleted file mode 100644 index 08f53865c0..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/sqlite3rtree.h +++ /dev/null @@ -1,56 +0,0 @@ -/* -** 2010 August 30 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -*/ - -#ifndef _SQLITE3RTREE_H_ -#define _SQLITE3RTREE_H_ - -#include - -#ifdef __cplusplus -extern "C" { -#endif - -typedef struct sqlite3_rtree_geometry sqlite3_rtree_geometry; - -/* -** Register a geometry callback named zGeom that can be used as part of an -** R-Tree geometry query as follows: -** -** SELECT ... FROM WHERE MATCH $zGeom(... params ...) -*/ -int sqlite3_rtree_geometry_callback( - sqlite3 *db, - const char *zGeom, - int (*xGeom)(sqlite3_rtree_geometry *, int nCoord, double *aCoord, int *pRes), - void *pContext -); - - -/* -** A pointer to a structure of the following type is passed as the first -** argument to callbacks registered using rtree_geometry_callback(). -*/ -struct sqlite3_rtree_geometry { - void *pContext; /* Copy of pContext passed to s_r_g_c() */ - int nParam; /* Size of array aParam[] */ - double *aParam; /* Parameters passed to SQL geom function */ - void *pUser; /* Callback implementation user data */ - void (*xDelUser)(void *); /* Called by SQLite to clean up pUser */ -}; - - -#ifdef __cplusplus -} /* end of the 'extern "C"' block */ -#endif - -#endif /* ifndef _SQLITE3RTREE_H_ */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/tkt3363.test b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/tkt3363.test deleted file mode 100644 index 748c05e538..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/tkt3363.test +++ /dev/null @@ -1,50 +0,0 @@ -# 2008 Sep 08 -# -# The author disclaims copyright to this source code. In place of -# a legal notice, here is a blessing: -# -# May you do good and not evil. -# May you find forgiveness for yourself and forgive others. -# May you share freely, never taking more than you give. -# -#*********************************************************************** -# -# The focus of this file is testing that ticket #3363 is fixed. -# - -if {![info exists testdir]} { - set testdir [file join [file dirname [info script]] .. .. test] -} -source [file join [file dirname [info script]] rtree_util.tcl] -source $testdir/tester.tcl - -ifcapable !rtree { - finish_test - return -} - -do_test tkt3363.1.1 { - execsql { CREATE VIRTUAL TABLE t1 USING rtree(ii, x1, x2, y1, y2) } -} {} - -do_test tkt3363.1.2 { - for {set ii 1} {$ii < 50} {incr ii} { - set x 1000000 - set y [expr 4000000 + $ii*10] - execsql { INSERT INTO t1 VALUES($ii, $x, $x, $y, $y) } - } -} {} - -do_test tkt3363.1.3 { - execsql { - SELECT count(*) FROM t1 WHERE +y2>4000425.0; - } -} {7} - -do_test tkt3363.1.4 { - execsql { - SELECT count(*) FROM t1 WHERE y2>4000425.0; - } -} {7} - -finish_test diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/viewrtree.tcl b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/viewrtree.tcl deleted file mode 100644 index 8582715bc4..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/ext/rtree/viewrtree.tcl +++ /dev/null @@ -1,188 +0,0 @@ - -load ./libsqlite3.dylib -#package require sqlite3 -source [file join [file dirname $argv0] rtree_util.tcl] - -wm title . "SQLite r-tree viewer" - -if {[llength $argv]!=1} { - puts stderr "Usage: $argv0 " - puts stderr "" - exit -} -sqlite3 db [lindex $argv 0] - -canvas .c -background white -width 400 -height 300 -highlightthickness 0 - -button .b -text "Parent Node" -command { - set sql "SELECT parentnode FROM $::O(zTab)_parent WHERE nodeno = $::O(iNode)" - set ::O(iNode) [db one $sql] - if {$::O(iNode) eq ""} {set ::O(iNode) 1} - view_node -} - -set O(iNode) 1 -set O(zTab) "" -set O(listbox_captions) [list] -set O(listbox_itemmap) [list] -set O(listbox_highlight) -1 - -listbox .l -listvariable ::O(listbox_captions) -yscrollcommand {.ls set} -scrollbar .ls -command {.l yview} -label .status -font courier -anchor w -label .title -anchor w -text "Node 1:" -background white -borderwidth 0 - - -set rtree_tables [list] -db eval { - SELECT name - FROM sqlite_master - WHERE type='table' AND sql LIKE '%virtual%table%using%rtree%' -} { - set nCol [expr [llength [db eval "pragma table_info($name)"]]/6] - if {$nCol != 5} { - puts stderr "Not viewing $name - is not 2-dimensional" - } else { - lappend rtree_tables [list Table $name] - } -} -if {$rtree_tables eq ""} { - puts stderr "Cannot find an r-tree table in database [lindex $argv 0]" - puts stderr "" - exit -} -eval tk_optionMenu .select option_var $rtree_tables -trace add variable option_var write set_option_var -proc set_option_var {args} { - set ::O(zTab) [lindex $::option_var 1] - set ::O(iNode) 1 - view_node -} -set ::O(zTab) [lindex $::rtree_tables 0 1] - -bind .l <1> {listbox_click [.l nearest %y]} -bind .l {listbox_mouseover [.l nearest %y]} -bind .l {listbox_mouseover -1} - -proc listbox_click {sel} { - if {$sel ne ""} { - set ::O(iNode) [lindex $::O(listbox_captions) $sel 1] - view_node - } -} -proc listbox_mouseover {i} { - set oldid [lindex $::O(listbox_itemmap) $::O(listbox_highlight)] - .c itemconfigure $oldid -fill "" - - .l selection clear 0 end - .status configure -text "" - if {$i>=0} { - set id [lindex $::O(listbox_itemmap) $i] - .c itemconfigure $id -fill grey - .c lower $id - set ::O(listbox_highlight) $i - .l selection set $i - .status configure -text [cell_report db $::O(zTab) $::O(iNode) $i] - } -} - -grid configure .select -row 0 -column 0 -columnspan 2 -sticky nsew -grid configure .b -row 1 -column 0 -columnspan 2 -sticky nsew -grid configure .l -row 2 -column 0 -sticky nsew -grid configure .status -row 3 -column 0 -columnspan 3 -sticky nsew - -grid configure .title -row 0 -column 2 -sticky nsew -grid configure .c -row 1 -column 2 -rowspan 2 -sticky nsew -grid configure .ls -row 2 -column 1 -sticky nsew - -grid columnconfigure . 2 -weight 1 -grid rowconfigure . 2 -weight 1 - -proc node_bbox {data} { - set xmin 0 - set xmax 0 - set ymin 0 - set ymax 0 - foreach {rowid xmin xmax ymin ymax} [lindex $data 0] break - foreach cell [lrange $data 1 end] { - foreach {rowid x1 x2 y1 y2} $cell break - if {$x1 < $xmin} {set xmin $x1} - if {$x2 > $xmax} {set xmax $x2} - if {$y1 < $ymin} {set ymin $y1} - if {$y2 > $ymax} {set ymax $y2} - } - list $xmin $xmax $ymin $ymax -} - -proc view_node {} { - set iNode $::O(iNode) - set zTab $::O(zTab) - - set data [rtree_node db $zTab $iNode 12] - set depth [rtree_nodedepth db $zTab $iNode] - - .c delete all - set ::O(listbox_captions) [list] - set ::O(listbox_itemmap) [list] - set $::O(listbox_highlight) -1 - - .b configure -state normal - if {$iNode == 1} {.b configure -state disabled} - .title configure -text "Node $iNode: [cell_report db $zTab $iNode -1]" - - foreach {xmin xmax ymin ymax} [node_bbox $data] break - set total_area 0.0 - - set xscale [expr {double([winfo width .c]-20)/($xmax-$xmin)}] - set yscale [expr {double([winfo height .c]-20)/($ymax-$ymin)}] - - set xoff [expr {10.0 - $xmin*$xscale}] - set yoff [expr {10.0 - $ymin*$yscale}] - - foreach cell $data { - foreach {rowid x1 x2 y1 y2} $cell break - set total_area [expr {$total_area + ($x2-$x1)*($y2-$y1)}] - set x1 [expr {$x1*$xscale + $xoff}] - set x2 [expr {$x2*$xscale + $xoff}] - set y1 [expr {$y1*$yscale + $yoff}] - set y2 [expr {$y2*$yscale + $yoff}] - - set id [.c create rectangle $x1 $y1 $x2 $y2] - if {$depth>0} { - lappend ::O(listbox_captions) "Node $rowid" - lappend ::O(listbox_itemmap) $id - } - } -} - -proc cell_report {db zTab iParent iCell} { - set data [rtree_node db $zTab $iParent 12] - set cell [lindex $data $iCell] - - foreach {xmin xmax ymin ymax} [node_bbox $data] break - set total_area [expr ($xmax-$xmin)*($ymax-$ymin)] - - if {$cell eq ""} { - set cell_area 0.0 - foreach cell $data { - foreach {rowid x1 x2 y1 y2} $cell break - set cell_area [expr $cell_area+($x2-$x1)*($y2-$y1)] - } - set cell_area [expr $cell_area/[llength $data]] - set zReport [format "Size = %.1f x %.1f Average child area = %.1f%%" \ - [expr $xmax-$xmin] [expr $ymax-$ymin] [expr 100.0*$cell_area/$total_area]\ - ] - append zReport " Sub-tree height: [rtree_nodedepth db $zTab $iParent]" - } else { - foreach {rowid x1 x2 y1 y2} $cell break - set cell_area [expr ($x2-$x1)*($y2-$y1)] - set zReport [format "Size = %.1f x %.1f Area = %.1f%%" \ - [expr $x2-$x1] [expr $y2-$y1] [expr 100.0*$cell_area/$total_area] - ] - } - - return $zReport -} - -view_node -bind .c view_node diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/install-sh b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/install-sh deleted file mode 100644 index 7dc2f28973..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/install-sh +++ /dev/null @@ -1,251 +0,0 @@ -#!/bin/sh -# -# install - install a program, script, or datafile -# This comes from X11R5 (mit/util/scripts/install.sh). -# -# Copyright 1991 by the Massachusetts Institute of Technology -# -# Permission to use, copy, modify, distribute, and sell this software and its -# documentation for any purpose is hereby granted without fee, provided that -# the above copyright notice appear in all copies and that both that -# copyright notice and this permission notice appear in supporting -# documentation, and that the name of M.I.T. not be used in advertising or -# publicity pertaining to distribution of the software without specific, -# written prior permission. M.I.T. makes no representations about the -# suitability of this software for any purpose. It is provided "as is" -# without express or implied warranty. -# -# Calling this script install-sh is preferred over install.sh, to prevent -# `make' implicit rules from creating a file called install from it -# when there is no Makefile. -# -# This script is compatible with the BSD install script, but was written -# from scratch. It can only install one file at a time, a restriction -# shared with many OS's install programs. - - -# set DOITPROG to echo to test this script - -# Don't use :- since 4.3BSD and earlier shells don't like it. -doit="${DOITPROG-}" - - -# put in absolute paths if you don't have them in your path; or use env. vars. - -mvprog="${MVPROG-mv}" -cpprog="${CPPROG-cp}" -chmodprog="${CHMODPROG-chmod}" -chownprog="${CHOWNPROG-chown}" -chgrpprog="${CHGRPPROG-chgrp}" -stripprog="${STRIPPROG-strip}" -rmprog="${RMPROG-rm}" -mkdirprog="${MKDIRPROG-mkdir}" - -transformbasename="" -transform_arg="" -instcmd="$mvprog" -chmodcmd="$chmodprog 0755" -chowncmd="" -chgrpcmd="" -stripcmd="" -rmcmd="$rmprog -f" -mvcmd="$mvprog" -src="" -dst="" -dir_arg="" - -while [ x"$1" != x ]; do - case $1 in - -c) instcmd="$cpprog" - shift - continue;; - - -d) dir_arg=true - shift - continue;; - - -m) chmodcmd="$chmodprog $2" - shift - shift - continue;; - - -o) chowncmd="$chownprog $2" - shift - shift - continue;; - - -g) chgrpcmd="$chgrpprog $2" - shift - shift - continue;; - - -s) stripcmd="$stripprog" - shift - continue;; - - -t=*) transformarg=`echo $1 | sed 's/-t=//'` - shift - continue;; - - -b=*) transformbasename=`echo $1 | sed 's/-b=//'` - shift - continue;; - - *) if [ x"$src" = x ] - then - src=$1 - else - # this colon is to work around a 386BSD /bin/sh bug - : - dst=$1 - fi - shift - continue;; - esac -done - -if [ x"$src" = x ] -then - echo "install: no input file specified" - exit 1 -else - true -fi - -if [ x"$dir_arg" != x ]; then - dst=$src - src="" - - if [ -d $dst ]; then - instcmd=: - chmodcmd="" - else - instcmd=mkdir - fi -else - -# Waiting for this to be detected by the "$instcmd $src $dsttmp" command -# might cause directories to be created, which would be especially bad -# if $src (and thus $dsttmp) contains '*'. - - if [ -f $src -o -d $src ] - then - true - else - echo "install: $src does not exist" - exit 1 - fi - - if [ x"$dst" = x ] - then - echo "install: no destination specified" - exit 1 - else - true - fi - -# If destination is a directory, append the input filename; if your system -# does not like double slashes in filenames, you may need to add some logic - - if [ -d $dst ] - then - dst="$dst"/`basename $src` - else - true - fi -fi - -## this sed command emulates the dirname command -dstdir=`echo $dst | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'` - -# Make sure that the destination directory exists. -# this part is taken from Noah Friedman's mkinstalldirs script - -# Skip lots of stat calls in the usual case. -if [ ! -d "$dstdir" ]; then -defaultIFS=' -' -IFS="${IFS-${defaultIFS}}" - -oIFS="${IFS}" -# Some sh's can't handle IFS=/ for some reason. -IFS='%' -set - `echo ${dstdir} | sed -e 's@/@%@g' -e 's@^%@/@'` -IFS="${oIFS}" - -pathcomp='' - -while [ $# -ne 0 ] ; do - pathcomp="${pathcomp}${1}" - shift - - if [ ! -d "${pathcomp}" ] ; - then - $mkdirprog "${pathcomp}" - else - true - fi - - pathcomp="${pathcomp}/" -done -fi - -if [ x"$dir_arg" != x ] -then - $doit $instcmd $dst && - - if [ x"$chowncmd" != x ]; then $doit $chowncmd $dst; else true ; fi && - if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dst; else true ; fi && - if [ x"$stripcmd" != x ]; then $doit $stripcmd $dst; else true ; fi && - if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dst; else true ; fi -else - -# If we're going to rename the final executable, determine the name now. - - if [ x"$transformarg" = x ] - then - dstfile=`basename $dst` - else - dstfile=`basename $dst $transformbasename | - sed $transformarg`$transformbasename - fi - -# don't allow the sed command to completely eliminate the filename - - if [ x"$dstfile" = x ] - then - dstfile=`basename $dst` - else - true - fi - -# Make a temp file name in the proper directory. - - dsttmp=$dstdir/#inst.$$# - -# Move or copy the file name to the temp name - - $doit $instcmd $src $dsttmp && - - trap "rm -f ${dsttmp}" 0 && - -# and set any options; do chmod last to preserve setuid bits - -# If any of these fail, we abort the whole thing. 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There is NO -# warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. - -# GNU Libtool is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2 of the License, or -# (at your option) any later version. -# -# As a special exception to the GNU General Public License, -# if you distribute this file as part of a program or library that -# is built using GNU Libtool, you may include this file under the -# same distribution terms that you use for the rest of that program. -# -# GNU Libtool is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -# General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with GNU Libtool; see the file COPYING. 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then - case "$current_libdirs " in - *" $libdir "*) ;; - *) current_libdirs="$current_libdirs $libdir" ;; - esac - else - # Note the libdir as a future libdir. - case "$future_libdirs " in - *" $libdir "*) ;; - *) future_libdirs="$future_libdirs $libdir" ;; - esac - fi - - func_dirname "$file" "/" "" - dir="$func_dirname_result" - dir="$dir$objdir" - - if test -n "$relink_command"; then - # Determine the prefix the user has applied to our future dir. - inst_prefix_dir=`$ECHO "X$destdir" | $Xsed -e "s%$libdir\$%%"` - - # Don't allow the user to place us outside of our expected - # location b/c this prevents finding dependent libraries that - # are installed to the same prefix. - # At present, this check doesn't affect windows .dll's that - # are installed into $libdir/../bin (currently, that works fine) - # but it's something to keep an eye on. - test "$inst_prefix_dir" = "$destdir" && \ - func_fatal_error "error: cannot install \`$file' to a directory not ending in $libdir" - - if test -n "$inst_prefix_dir"; then - # Stick the inst_prefix_dir data into the link command. - relink_command=`$ECHO "X$relink_command" | $Xsed -e "s%@inst_prefix_dir@%-inst-prefix-dir $inst_prefix_dir%"` - else - relink_command=`$ECHO "X$relink_command" | $Xsed -e "s%@inst_prefix_dir@%%"` - fi - - func_warning "relinking \`$file'" - func_show_eval "$relink_command" \ - 'func_fatal_error "error: relink \`$file'\'' with the above command before installing it"' - fi - - # See the names of the shared library. - set dummy $library_names; shift - if test -n "$1"; then - realname="$1" - shift - - srcname="$realname" - test -n "$relink_command" && srcname="$realname"T - - # Install the shared library and build the symlinks. - func_show_eval "$install_prog $dir/$srcname $destdir/$realname" \ - 'exit $?' - tstripme="$stripme" - case $host_os in - cygwin* | mingw* | pw32* | cegcc*) - case $realname in - *.dll.a) - tstripme="" - ;; - esac - ;; - esac - if test -n "$tstripme" && test -n "$striplib"; then - func_show_eval "$striplib $destdir/$realname" 'exit $?' - fi - - if test "$#" -gt 0; then - # Delete the old symlinks, and create new ones. - # Try `ln -sf' first, because the `ln' binary might depend on - # the symlink we replace! Solaris /bin/ln does not understand -f, - # so we also need to try rm && ln -s. - for linkname - do - test "$linkname" != "$realname" \ - && func_show_eval "(cd $destdir && { $LN_S -f $realname $linkname || { $RM $linkname && $LN_S $realname $linkname; }; })" - done - fi - - # Do each command in the postinstall commands. - lib="$destdir/$realname" - func_execute_cmds "$postinstall_cmds" 'exit $?' - fi - - # Install the pseudo-library for information purposes. - func_basename "$file" - name="$func_basename_result" - instname="$dir/$name"i - func_show_eval "$install_prog $instname $destdir/$name" 'exit $?' - - # Maybe install the static library, too. - test -n "$old_library" && staticlibs="$staticlibs $dir/$old_library" - ;; - - *.lo) - # Install (i.e. copy) a libtool object. - - # Figure out destination file name, if it wasn't already specified. - if test -n "$destname"; then - destfile="$destdir/$destname" - else - func_basename "$file" - destfile="$func_basename_result" - destfile="$destdir/$destfile" - fi - - # Deduce the name of the destination old-style object file. - case $destfile in - *.lo) - func_lo2o "$destfile" - staticdest=$func_lo2o_result - ;; - *.$objext) - staticdest="$destfile" - destfile= - ;; - *) - func_fatal_help "cannot copy a libtool object to \`$destfile'" - ;; - esac - - # Install the libtool object if requested. - test -n "$destfile" && \ - func_show_eval "$install_prog $file $destfile" 'exit $?' - - # Install the old object if enabled. - if test "$build_old_libs" = yes; then - # Deduce the name of the old-style object file. - func_lo2o "$file" - staticobj=$func_lo2o_result - func_show_eval "$install_prog \$staticobj \$staticdest" 'exit $?' - fi - exit $EXIT_SUCCESS - ;; - - *) - # Figure out destination file name, if it wasn't already specified. - if test -n "$destname"; then - destfile="$destdir/$destname" - else - func_basename "$file" - destfile="$func_basename_result" - destfile="$destdir/$destfile" - fi - - # If the file is missing, and there is a .exe on the end, strip it - # because it is most likely a libtool script we actually want to - # install - stripped_ext="" - case $file in - *.exe) - if test ! -f "$file"; then - func_stripname '' '.exe' "$file" - file=$func_stripname_result - stripped_ext=".exe" - fi - ;; - esac - - # Do a test to see if this is really a libtool program. - case $host in - *cygwin* | *mingw*) - if func_ltwrapper_executable_p "$file"; then - func_ltwrapper_scriptname "$file" - wrapper=$func_ltwrapper_scriptname_result - else - func_stripname '' '.exe' "$file" - wrapper=$func_stripname_result - fi - ;; - *) - wrapper=$file - ;; - esac - if func_ltwrapper_script_p "$wrapper"; then - notinst_deplibs= - relink_command= - - func_source "$wrapper" - - # Check the variables that should have been set. - test -z "$generated_by_libtool_version" && \ - func_fatal_error "invalid libtool wrapper script \`$wrapper'" - - finalize=yes - for lib in $notinst_deplibs; do - # Check to see that each library is installed. - libdir= - if test -f "$lib"; then - func_source "$lib" - fi - libfile="$libdir/"`$ECHO "X$lib" | $Xsed -e 's%^.*/%%g'` ### testsuite: skip nested quoting test - if test -n "$libdir" && test ! -f "$libfile"; then - func_warning "\`$lib' has not been installed in \`$libdir'" - finalize=no - fi - done - - relink_command= - func_source "$wrapper" - - outputname= - if test "$fast_install" = no && test -n "$relink_command"; then - $opt_dry_run || { - if test "$finalize" = yes; then - tmpdir=`func_mktempdir` - func_basename "$file$stripped_ext" - file="$func_basename_result" - outputname="$tmpdir/$file" - # Replace the output file specification. - relink_command=`$ECHO "X$relink_command" | $Xsed -e 's%@OUTPUT@%'"$outputname"'%g'` - - $opt_silent || { - func_quote_for_expand "$relink_command" - eval "func_echo $func_quote_for_expand_result" - } - if eval "$relink_command"; then : - else - func_error "error: relink \`$file' with the above command before installing it" - $opt_dry_run || ${RM}r "$tmpdir" - continue - fi - file="$outputname" - else - func_warning "cannot relink \`$file'" - fi - } - else - # Install the binary that we compiled earlier. - file=`$ECHO "X$file$stripped_ext" | $Xsed -e "s%\([^/]*\)$%$objdir/\1%"` - fi - fi - - # remove .exe since cygwin /usr/bin/install will append another - # one anyway - case $install_prog,$host in - */usr/bin/install*,*cygwin*) - case $file:$destfile in - *.exe:*.exe) - # this is ok - ;; - *.exe:*) - destfile=$destfile.exe - ;; - *:*.exe) - func_stripname '' '.exe' "$destfile" - destfile=$func_stripname_result - ;; - esac - ;; - esac - func_show_eval "$install_prog\$stripme \$file \$destfile" 'exit $?' - $opt_dry_run || if test -n "$outputname"; then - ${RM}r "$tmpdir" - fi - ;; - esac - done - - for file in $staticlibs; do - func_basename "$file" - name="$func_basename_result" - - # Set up the ranlib parameters. - oldlib="$destdir/$name" - - func_show_eval "$install_prog \$file \$oldlib" 'exit $?' - - if test -n "$stripme" && test -n "$old_striplib"; then - func_show_eval "$old_striplib $oldlib" 'exit $?' - fi - - # Do each command in the postinstall commands. - func_execute_cmds "$old_postinstall_cmds" 'exit $?' - done - - test -n "$future_libdirs" && \ - func_warning "remember to run \`$progname --finish$future_libdirs'" - - if test -n "$current_libdirs"; then - # Maybe just do a dry run. - $opt_dry_run && current_libdirs=" -n$current_libdirs" - exec_cmd='$SHELL $progpath $preserve_args --finish$current_libdirs' - else - exit $EXIT_SUCCESS - fi -} - -test "$mode" = install && func_mode_install ${1+"$@"} - - -# func_generate_dlsyms outputname originator pic_p -# Extract symbols from dlprefiles and create ${outputname}S.o with -# a dlpreopen symbol table. -func_generate_dlsyms () -{ - $opt_debug - my_outputname="$1" - my_originator="$2" - my_pic_p="${3-no}" - my_prefix=`$ECHO "$my_originator" | sed 's%[^a-zA-Z0-9]%_%g'` - my_dlsyms= - - if test -n "$dlfiles$dlprefiles" || test "$dlself" != no; then - if test -n "$NM" && test -n "$global_symbol_pipe"; then - my_dlsyms="${my_outputname}S.c" - else - func_error "not configured to extract global symbols from dlpreopened files" - fi - fi - - if test -n "$my_dlsyms"; then - case $my_dlsyms in - "") ;; - *.c) - # Discover the nlist of each of the dlfiles. - nlist="$output_objdir/${my_outputname}.nm" - - func_show_eval "$RM $nlist ${nlist}S ${nlist}T" - - # Parse the name list into a source file. - func_verbose "creating $output_objdir/$my_dlsyms" - - $opt_dry_run || $ECHO > "$output_objdir/$my_dlsyms" "\ -/* $my_dlsyms - symbol resolution table for \`$my_outputname' dlsym emulation. */ -/* Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION */ - -#ifdef __cplusplus -extern \"C\" { -#endif - -/* External symbol declarations for the compiler. */\ -" - - if test "$dlself" = yes; then - func_verbose "generating symbol list for \`$output'" - - $opt_dry_run || echo ': @PROGRAM@ ' > "$nlist" - - # Add our own program objects to the symbol list. - progfiles=`$ECHO "X$objs$old_deplibs" | $SP2NL | $Xsed -e "$lo2o" | $NL2SP` - for progfile in $progfiles; do - func_verbose "extracting global C symbols from \`$progfile'" - $opt_dry_run || eval "$NM $progfile | $global_symbol_pipe >> '$nlist'" - done - - if test -n "$exclude_expsyms"; then - $opt_dry_run || { - eval '$EGREP -v " ($exclude_expsyms)$" "$nlist" > "$nlist"T' - eval '$MV "$nlist"T "$nlist"' - } - fi - - if test -n "$export_symbols_regex"; then - $opt_dry_run || { - eval '$EGREP -e "$export_symbols_regex" "$nlist" > "$nlist"T' - eval '$MV "$nlist"T "$nlist"' - } - fi - - # Prepare the list of exported symbols - if test -z "$export_symbols"; then - export_symbols="$output_objdir/$outputname.exp" - $opt_dry_run || { - $RM $export_symbols - eval "${SED} -n -e '/^: @PROGRAM@ $/d' -e 's/^.* \(.*\)$/\1/p' "'< "$nlist" > "$export_symbols"' - case $host in - *cygwin* | *mingw* | *cegcc* ) - eval "echo EXPORTS "'> "$output_objdir/$outputname.def"' - eval 'cat "$export_symbols" >> "$output_objdir/$outputname.def"' - ;; - esac - } - else - $opt_dry_run || { - eval "${SED} -e 's/\([].[*^$]\)/\\\\\1/g' -e 's/^/ /' -e 's/$/$/'"' < "$export_symbols" > "$output_objdir/$outputname.exp"' - eval '$GREP -f "$output_objdir/$outputname.exp" < "$nlist" > "$nlist"T' - eval '$MV "$nlist"T "$nlist"' - case $host in - *cygwin | *mingw* | *cegcc* ) - eval "echo EXPORTS "'> "$output_objdir/$outputname.def"' - eval 'cat "$nlist" >> "$output_objdir/$outputname.def"' - ;; - esac - } - fi - fi - - for dlprefile in $dlprefiles; do - func_verbose "extracting global C symbols from \`$dlprefile'" - func_basename "$dlprefile" - name="$func_basename_result" - $opt_dry_run || { - eval '$ECHO ": $name " >> "$nlist"' - eval "$NM $dlprefile 2>/dev/null | $global_symbol_pipe >> '$nlist'" - } - done - - $opt_dry_run || { - # Make sure we have at least an empty file. - test -f "$nlist" || : > "$nlist" - - if test -n "$exclude_expsyms"; then - $EGREP -v " ($exclude_expsyms)$" "$nlist" > "$nlist"T - $MV "$nlist"T "$nlist" - fi - - # Try sorting and uniquifying the output. - if $GREP -v "^: " < "$nlist" | - if sort -k 3 /dev/null 2>&1; then - sort -k 3 - else - sort +2 - fi | - uniq > "$nlist"S; then - : - else - $GREP -v "^: " < "$nlist" > "$nlist"S - fi - - if test -f "$nlist"S; then - eval "$global_symbol_to_cdecl"' < "$nlist"S >> "$output_objdir/$my_dlsyms"' - else - $ECHO '/* NONE */' >> "$output_objdir/$my_dlsyms" - fi - - $ECHO >> "$output_objdir/$my_dlsyms" "\ - -/* The mapping between symbol names and symbols. */ -typedef struct { - const char *name; - void *address; -} lt_dlsymlist; -" - case $host in - *cygwin* | *mingw* | *cegcc* ) - $ECHO >> "$output_objdir/$my_dlsyms" "\ -/* DATA imports from DLLs on WIN32 con't be const, because - runtime relocations are performed -- see ld's documentation - on pseudo-relocs. */" - lt_dlsym_const= ;; - *osf5*) - echo >> "$output_objdir/$my_dlsyms" "\ -/* This system does not cope well with relocations in const data */" - lt_dlsym_const= ;; - *) - lt_dlsym_const=const ;; - esac - - $ECHO >> "$output_objdir/$my_dlsyms" "\ -extern $lt_dlsym_const lt_dlsymlist -lt_${my_prefix}_LTX_preloaded_symbols[]; -$lt_dlsym_const lt_dlsymlist -lt_${my_prefix}_LTX_preloaded_symbols[] = -{\ - { \"$my_originator\", (void *) 0 }," - - case $need_lib_prefix in - no) - eval "$global_symbol_to_c_name_address" < "$nlist" >> "$output_objdir/$my_dlsyms" - ;; - *) - eval "$global_symbol_to_c_name_address_lib_prefix" < "$nlist" >> "$output_objdir/$my_dlsyms" - ;; - esac - $ECHO >> "$output_objdir/$my_dlsyms" "\ - {0, (void *) 0} -}; - -/* This works around a problem in FreeBSD linker */ -#ifdef FREEBSD_WORKAROUND -static const void *lt_preloaded_setup() { - return lt_${my_prefix}_LTX_preloaded_symbols; -} -#endif - -#ifdef __cplusplus -} -#endif\ -" - } # !$opt_dry_run - - pic_flag_for_symtable= - case "$compile_command " in - *" -static "*) ;; - *) - case $host in - # compiling the symbol table file with pic_flag works around - # a FreeBSD bug that causes programs to crash when -lm is - # linked before any other PIC object. But we must not use - # pic_flag when linking with -static. The problem exists in - # FreeBSD 2.2.6 and is fixed in FreeBSD 3.1. - *-*-freebsd2*|*-*-freebsd3.0*|*-*-freebsdelf3.0*) - pic_flag_for_symtable=" $pic_flag -DFREEBSD_WORKAROUND" ;; - *-*-hpux*) - pic_flag_for_symtable=" $pic_flag" ;; - *) - if test "X$my_pic_p" != Xno; then - pic_flag_for_symtable=" $pic_flag" - fi - ;; - esac - ;; - esac - symtab_cflags= - for arg in $LTCFLAGS; do - case $arg in - -pie | -fpie | -fPIE) ;; - *) symtab_cflags="$symtab_cflags $arg" ;; - esac - done - - # Now compile the dynamic symbol file. - func_show_eval '(cd $output_objdir && $LTCC$symtab_cflags -c$no_builtin_flag$pic_flag_for_symtable "$my_dlsyms")' 'exit $?' - - # Clean up the generated files. - func_show_eval '$RM "$output_objdir/$my_dlsyms" "$nlist" "${nlist}S" "${nlist}T"' - - # Transform the symbol file into the correct name. - symfileobj="$output_objdir/${my_outputname}S.$objext" - case $host in - *cygwin* | *mingw* | *cegcc* ) - if test -f "$output_objdir/$my_outputname.def"; then - compile_command=`$ECHO "X$compile_command" | $Xsed -e "s%@SYMFILE@%$output_objdir/$my_outputname.def $symfileobj%"` - finalize_command=`$ECHO "X$finalize_command" | $Xsed -e "s%@SYMFILE@%$output_objdir/$my_outputname.def $symfileobj%"` - else - compile_command=`$ECHO "X$compile_command" | $Xsed -e "s%@SYMFILE@%$symfileobj%"` - finalize_command=`$ECHO "X$finalize_command" | $Xsed -e "s%@SYMFILE@%$symfileobj%"` - fi - ;; - *) - compile_command=`$ECHO "X$compile_command" | $Xsed -e "s%@SYMFILE@%$symfileobj%"` - finalize_command=`$ECHO "X$finalize_command" | $Xsed -e "s%@SYMFILE@%$symfileobj%"` - ;; - esac - ;; - *) - func_fatal_error "unknown suffix for \`$my_dlsyms'" - ;; - esac - else - # We keep going just in case the user didn't refer to - # lt_preloaded_symbols. The linker will fail if global_symbol_pipe - # really was required. - - # Nullify the symbol file. - compile_command=`$ECHO "X$compile_command" | $Xsed -e "s% @SYMFILE@%%"` - finalize_command=`$ECHO "X$finalize_command" | $Xsed -e "s% @SYMFILE@%%"` - fi -} - -# func_win32_libid arg -# return the library type of file 'arg' -# -# Need a lot of goo to handle *both* DLLs and import libs -# Has to be a shell function in order to 'eat' the argument -# that is supplied when $file_magic_command is called. -func_win32_libid () -{ - $opt_debug - win32_libid_type="unknown" - win32_fileres=`file -L $1 2>/dev/null` - case $win32_fileres in - *ar\ archive\ import\ library*) # definitely import - win32_libid_type="x86 archive import" - ;; - *ar\ archive*) # could be an import, or static - if eval $OBJDUMP -f $1 | $SED -e '10q' 2>/dev/null | - $EGREP 'file format pe-i386(.*architecture: i386)?' >/dev/null ; then - win32_nmres=`eval $NM -f posix -A $1 | - $SED -n -e ' - 1,100{ - / I /{ - s,.*,import, - p - q - } - }'` - case $win32_nmres in - import*) win32_libid_type="x86 archive import";; - *) win32_libid_type="x86 archive static";; - esac - fi - ;; - *DLL*) - win32_libid_type="x86 DLL" - ;; - *executable*) # but shell scripts are "executable" too... - case $win32_fileres in - *MS\ Windows\ PE\ Intel*) - win32_libid_type="x86 DLL" - ;; - esac - ;; - esac - $ECHO "$win32_libid_type" -} - - - -# func_extract_an_archive dir oldlib -func_extract_an_archive () -{ - $opt_debug - f_ex_an_ar_dir="$1"; shift - f_ex_an_ar_oldlib="$1" - func_show_eval "(cd \$f_ex_an_ar_dir && $AR x \"\$f_ex_an_ar_oldlib\")" 'exit $?' - if ($AR t "$f_ex_an_ar_oldlib" | sort | sort -uc >/dev/null 2>&1); then - : - else - func_fatal_error "object name conflicts in archive: $f_ex_an_ar_dir/$f_ex_an_ar_oldlib" - fi -} - - -# func_extract_archives gentop oldlib ... -func_extract_archives () -{ - $opt_debug - my_gentop="$1"; shift - my_oldlibs=${1+"$@"} - my_oldobjs="" - my_xlib="" - my_xabs="" - my_xdir="" - - for my_xlib in $my_oldlibs; do - # Extract the objects. - case $my_xlib in - [\\/]* | [A-Za-z]:[\\/]*) my_xabs="$my_xlib" ;; - *) my_xabs=`pwd`"/$my_xlib" ;; - esac - func_basename "$my_xlib" - my_xlib="$func_basename_result" - my_xlib_u=$my_xlib - while :; do - case " $extracted_archives " in - *" $my_xlib_u "*) - func_arith $extracted_serial + 1 - extracted_serial=$func_arith_result - my_xlib_u=lt$extracted_serial-$my_xlib ;; - *) break ;; - esac - done - extracted_archives="$extracted_archives $my_xlib_u" - my_xdir="$my_gentop/$my_xlib_u" - - func_mkdir_p "$my_xdir" - - case $host in - *-darwin*) - func_verbose "Extracting $my_xabs" - # Do not bother doing anything if just a dry run - $opt_dry_run || { - darwin_orig_dir=`pwd` - cd $my_xdir || exit $? - darwin_archive=$my_xabs - darwin_curdir=`pwd` - darwin_base_archive=`basename "$darwin_archive"` - darwin_arches=`$LIPO -info "$darwin_archive" 2>/dev/null | $GREP Architectures 2>/dev/null || true` - if test -n "$darwin_arches"; then - darwin_arches=`$ECHO "$darwin_arches" | $SED -e 's/.*are://'` - darwin_arch= - func_verbose "$darwin_base_archive has multiple architectures $darwin_arches" - for darwin_arch in $darwin_arches ; do - func_mkdir_p "unfat-$$/${darwin_base_archive}-${darwin_arch}" - $LIPO -thin $darwin_arch -output "unfat-$$/${darwin_base_archive}-${darwin_arch}/${darwin_base_archive}" "${darwin_archive}" - cd "unfat-$$/${darwin_base_archive}-${darwin_arch}" - func_extract_an_archive "`pwd`" "${darwin_base_archive}" - cd "$darwin_curdir" - $RM "unfat-$$/${darwin_base_archive}-${darwin_arch}/${darwin_base_archive}" - done # $darwin_arches - ## Okay now we've a bunch of thin objects, gotta fatten them up :) - darwin_filelist=`find unfat-$$ -type f -name \*.o -print -o -name \*.lo -print | $SED -e "$basename" | sort -u` - darwin_file= - darwin_files= - for darwin_file in $darwin_filelist; do - darwin_files=`find unfat-$$ -name $darwin_file -print | $NL2SP` - $LIPO -create -output "$darwin_file" $darwin_files - done # $darwin_filelist - $RM -rf unfat-$$ - cd "$darwin_orig_dir" - else - cd $darwin_orig_dir - func_extract_an_archive "$my_xdir" "$my_xabs" - fi # $darwin_arches - } # !$opt_dry_run - ;; - *) - func_extract_an_archive "$my_xdir" "$my_xabs" - ;; - esac - my_oldobjs="$my_oldobjs "`find $my_xdir -name \*.$objext -print -o -name \*.lo -print | $NL2SP` - done - - func_extract_archives_result="$my_oldobjs" -} - - - -# func_emit_wrapper_part1 [arg=no] -# -# Emit the first part of a libtool wrapper script on stdout. -# For more information, see the description associated with -# func_emit_wrapper(), below. -func_emit_wrapper_part1 () -{ - func_emit_wrapper_part1_arg1=no - if test -n "$1" ; then - func_emit_wrapper_part1_arg1=$1 - fi - - $ECHO "\ -#! $SHELL - -# $output - temporary wrapper script for $objdir/$outputname -# Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION -# -# The $output program cannot be directly executed until all the libtool -# libraries that it depends on are installed. -# -# This wrapper script should never be moved out of the build directory. -# If it is, it will not operate correctly. - -# Sed substitution that helps us do robust quoting. It backslashifies -# metacharacters that are still active within double-quoted strings. -Xsed='${SED} -e 1s/^X//' -sed_quote_subst='$sed_quote_subst' - -# Be Bourne compatible -if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then - emulate sh - NULLCMD=: - # Zsh 3.x and 4.x performs word splitting on \${1+\"\$@\"}, which - # is contrary to our usage. Disable this feature. - alias -g '\${1+\"\$@\"}'='\"\$@\"' - setopt NO_GLOB_SUBST -else - case \`(set -o) 2>/dev/null\` in *posix*) set -o posix;; esac -fi -BIN_SH=xpg4; export BIN_SH # for Tru64 -DUALCASE=1; export DUALCASE # for MKS sh - -# The HP-UX ksh and POSIX shell print the target directory to stdout -# if CDPATH is set. -(unset CDPATH) >/dev/null 2>&1 && unset CDPATH - -relink_command=\"$relink_command\" - -# This environment variable determines our operation mode. -if test \"\$libtool_install_magic\" = \"$magic\"; then - # install mode needs the following variables: - generated_by_libtool_version='$macro_version' - notinst_deplibs='$notinst_deplibs' -else - # When we are sourced in execute mode, \$file and \$ECHO are already set. - if test \"\$libtool_execute_magic\" != \"$magic\"; then - ECHO=\"$qecho\" - file=\"\$0\" - # Make sure echo works. - if test \"X\$1\" = X--no-reexec; then - # Discard the --no-reexec flag, and continue. - shift - elif test \"X\`{ \$ECHO '\t'; } 2>/dev/null\`\" = 'X\t'; then - # Yippee, \$ECHO works! - : - else - # Restart under the correct shell, and then maybe \$ECHO will work. - exec $SHELL \"\$0\" --no-reexec \${1+\"\$@\"} - fi - fi\ -" - $ECHO "\ - - # Find the directory that this script lives in. - thisdir=\`\$ECHO \"X\$file\" | \$Xsed -e 's%/[^/]*$%%'\` - test \"x\$thisdir\" = \"x\$file\" && thisdir=. - - # Follow symbolic links until we get to the real thisdir. - file=\`ls -ld \"\$file\" | ${SED} -n 's/.*-> //p'\` - while test -n \"\$file\"; do - destdir=\`\$ECHO \"X\$file\" | \$Xsed -e 's%/[^/]*\$%%'\` - - # If there was a directory component, then change thisdir. - if test \"x\$destdir\" != \"x\$file\"; then - case \"\$destdir\" in - [\\\\/]* | [A-Za-z]:[\\\\/]*) thisdir=\"\$destdir\" ;; - *) thisdir=\"\$thisdir/\$destdir\" ;; - esac - fi - - file=\`\$ECHO \"X\$file\" | \$Xsed -e 's%^.*/%%'\` - file=\`ls -ld \"\$thisdir/\$file\" | ${SED} -n 's/.*-> //p'\` - done -" -} -# end: func_emit_wrapper_part1 - -# func_emit_wrapper_part2 [arg=no] -# -# Emit the second part of a libtool wrapper script on stdout. -# For more information, see the description associated with -# func_emit_wrapper(), below. -func_emit_wrapper_part2 () -{ - func_emit_wrapper_part2_arg1=no - if test -n "$1" ; then - func_emit_wrapper_part2_arg1=$1 - fi - - $ECHO "\ - - # Usually 'no', except on cygwin/mingw when embedded into - # the cwrapper. - WRAPPER_SCRIPT_BELONGS_IN_OBJDIR=$func_emit_wrapper_part2_arg1 - if test \"\$WRAPPER_SCRIPT_BELONGS_IN_OBJDIR\" = \"yes\"; then - # special case for '.' - if test \"\$thisdir\" = \".\"; then - thisdir=\`pwd\` - fi - # remove .libs from thisdir - case \"\$thisdir\" in - *[\\\\/]$objdir ) thisdir=\`\$ECHO \"X\$thisdir\" | \$Xsed -e 's%[\\\\/][^\\\\/]*$%%'\` ;; - $objdir ) thisdir=. ;; - esac - fi - - # Try to get the absolute directory name. - absdir=\`cd \"\$thisdir\" && pwd\` - test -n \"\$absdir\" && thisdir=\"\$absdir\" -" - - if test "$fast_install" = yes; then - $ECHO "\ - program=lt-'$outputname'$exeext - progdir=\"\$thisdir/$objdir\" - - if test ! -f \"\$progdir/\$program\" || - { file=\`ls -1dt \"\$progdir/\$program\" \"\$progdir/../\$program\" 2>/dev/null | ${SED} 1q\`; \\ - test \"X\$file\" != \"X\$progdir/\$program\"; }; then - - file=\"\$\$-\$program\" - - if test ! -d \"\$progdir\"; then - $MKDIR \"\$progdir\" - else - $RM \"\$progdir/\$file\" - fi" - - $ECHO "\ - - # relink executable if necessary - if test -n \"\$relink_command\"; then - if relink_command_output=\`eval \$relink_command 2>&1\`; then : - else - $ECHO \"\$relink_command_output\" >&2 - $RM \"\$progdir/\$file\" - exit 1 - fi - fi - - $MV \"\$progdir/\$file\" \"\$progdir/\$program\" 2>/dev/null || - { $RM \"\$progdir/\$program\"; - $MV \"\$progdir/\$file\" \"\$progdir/\$program\"; } - $RM \"\$progdir/\$file\" - fi" - else - $ECHO "\ - program='$outputname' - progdir=\"\$thisdir/$objdir\" -" - fi - - $ECHO "\ - - if test -f \"\$progdir/\$program\"; then" - - # Export our shlibpath_var if we have one. - if test "$shlibpath_overrides_runpath" = yes && test -n "$shlibpath_var" && test -n "$temp_rpath"; then - $ECHO "\ - # Add our own library path to $shlibpath_var - $shlibpath_var=\"$temp_rpath\$$shlibpath_var\" - - # Some systems cannot cope with colon-terminated $shlibpath_var - # The second colon is a workaround for a bug in BeOS R4 sed - $shlibpath_var=\`\$ECHO \"X\$$shlibpath_var\" | \$Xsed -e 's/::*\$//'\` - - export $shlibpath_var -" - fi - - # fixup the dll searchpath if we need to. - if test -n "$dllsearchpath"; then - $ECHO "\ - # Add the dll search path components to the executable PATH - PATH=$dllsearchpath:\$PATH -" - fi - - $ECHO "\ - if test \"\$libtool_execute_magic\" != \"$magic\"; then - # Run the actual program with our arguments. -" - case $host in - # Backslashes separate directories on plain windows - *-*-mingw | *-*-os2* | *-cegcc*) - $ECHO "\ - exec \"\$progdir\\\\\$program\" \${1+\"\$@\"} -" - ;; - - *) - $ECHO "\ - exec \"\$progdir/\$program\" \${1+\"\$@\"} -" - ;; - esac - $ECHO "\ - \$ECHO \"\$0: cannot exec \$program \$*\" 1>&2 - exit 1 - fi - else - # The program doesn't exist. - \$ECHO \"\$0: error: \\\`\$progdir/\$program' does not exist\" 1>&2 - \$ECHO \"This script is just a wrapper for \$program.\" 1>&2 - $ECHO \"See the $PACKAGE documentation for more information.\" 1>&2 - exit 1 - fi -fi\ -" -} -# end: func_emit_wrapper_part2 - - -# func_emit_wrapper [arg=no] -# -# Emit a libtool wrapper script on stdout. -# Don't directly open a file because we may want to -# incorporate the script contents within a cygwin/mingw -# wrapper executable. Must ONLY be called from within -# func_mode_link because it depends on a number of variables -# set therein. -# -# ARG is the value that the WRAPPER_SCRIPT_BELONGS_IN_OBJDIR -# variable will take. If 'yes', then the emitted script -# will assume that the directory in which it is stored is -# the $objdir directory. This is a cygwin/mingw-specific -# behavior. -func_emit_wrapper () -{ - func_emit_wrapper_arg1=no - if test -n "$1" ; then - func_emit_wrapper_arg1=$1 - fi - - # split this up so that func_emit_cwrapperexe_src - # can call each part independently. - func_emit_wrapper_part1 "${func_emit_wrapper_arg1}" - func_emit_wrapper_part2 "${func_emit_wrapper_arg1}" -} - - -# func_to_host_path arg -# -# Convert paths to host format when used with build tools. -# Intended for use with "native" mingw (where libtool itself -# is running under the msys shell), or in the following cross- -# build environments: -# $build $host -# mingw (msys) mingw [e.g. native] -# cygwin mingw -# *nix + wine mingw -# where wine is equipped with the `winepath' executable. -# In the native mingw case, the (msys) shell automatically -# converts paths for any non-msys applications it launches, -# but that facility isn't available from inside the cwrapper. -# Similar accommodations are necessary for $host mingw and -# $build cygwin. Calling this function does no harm for other -# $host/$build combinations not listed above. -# -# ARG is the path (on $build) that should be converted to -# the proper representation for $host. The result is stored -# in $func_to_host_path_result. -func_to_host_path () -{ - func_to_host_path_result="$1" - if test -n "$1" ; then - case $host in - *mingw* ) - lt_sed_naive_backslashify='s|\\\\*|\\|g;s|/|\\|g;s|\\|\\\\|g' - case $build in - *mingw* ) # actually, msys - # awkward: cmd appends spaces to result - lt_sed_strip_trailing_spaces="s/[ ]*\$//" - func_to_host_path_tmp1=`( cmd //c echo "$1" |\ - $SED -e "$lt_sed_strip_trailing_spaces" ) 2>/dev/null || echo ""` - func_to_host_path_result=`echo "$func_to_host_path_tmp1" |\ - $SED -e "$lt_sed_naive_backslashify"` - ;; - *cygwin* ) - func_to_host_path_tmp1=`cygpath -w "$1"` - func_to_host_path_result=`echo "$func_to_host_path_tmp1" |\ - $SED -e "$lt_sed_naive_backslashify"` - ;; - * ) - # Unfortunately, winepath does not exit with a non-zero - # error code, so we are forced to check the contents of - # stdout. On the other hand, if the command is not - # found, the shell will set an exit code of 127 and print - # *an error message* to stdout. So we must check for both - # error code of zero AND non-empty stdout, which explains - # the odd construction: - func_to_host_path_tmp1=`winepath -w "$1" 2>/dev/null` - if test "$?" -eq 0 && test -n "${func_to_host_path_tmp1}"; then - func_to_host_path_result=`echo "$func_to_host_path_tmp1" |\ - $SED -e "$lt_sed_naive_backslashify"` - else - # Allow warning below. - func_to_host_path_result="" - fi - ;; - esac - if test -z "$func_to_host_path_result" ; then - func_error "Could not determine host path corresponding to" - func_error " '$1'" - func_error "Continuing, but uninstalled executables may not work." - # Fallback: - func_to_host_path_result="$1" - fi - ;; - esac - fi -} -# end: func_to_host_path - -# func_to_host_pathlist arg -# -# Convert pathlists to host format when used with build tools. -# See func_to_host_path(), above. This function supports the -# following $build/$host combinations (but does no harm for -# combinations not listed here): -# $build $host -# mingw (msys) mingw [e.g. native] -# cygwin mingw -# *nix + wine mingw -# -# Path separators are also converted from $build format to -# $host format. If ARG begins or ends with a path separator -# character, it is preserved (but converted to $host format) -# on output. -# -# ARG is a pathlist (on $build) that should be converted to -# the proper representation on $host. The result is stored -# in $func_to_host_pathlist_result. -func_to_host_pathlist () -{ - func_to_host_pathlist_result="$1" - if test -n "$1" ; then - case $host in - *mingw* ) - lt_sed_naive_backslashify='s|\\\\*|\\|g;s|/|\\|g;s|\\|\\\\|g' - # Remove leading and trailing path separator characters from - # ARG. msys behavior is inconsistent here, cygpath turns them - # into '.;' and ';.', and winepath ignores them completely. - func_to_host_pathlist_tmp2="$1" - # Once set for this call, this variable should not be - # reassigned. It is used in tha fallback case. - func_to_host_pathlist_tmp1=`echo "$func_to_host_pathlist_tmp2" |\ - $SED -e 's|^:*||' -e 's|:*$||'` - case $build in - *mingw* ) # Actually, msys. - # Awkward: cmd appends spaces to result. - lt_sed_strip_trailing_spaces="s/[ ]*\$//" - func_to_host_pathlist_tmp2=`( cmd //c echo "$func_to_host_pathlist_tmp1" |\ - $SED -e "$lt_sed_strip_trailing_spaces" ) 2>/dev/null || echo ""` - func_to_host_pathlist_result=`echo "$func_to_host_pathlist_tmp2" |\ - $SED -e "$lt_sed_naive_backslashify"` - ;; - *cygwin* ) - func_to_host_pathlist_tmp2=`cygpath -w -p "$func_to_host_pathlist_tmp1"` - func_to_host_pathlist_result=`echo "$func_to_host_pathlist_tmp2" |\ - $SED -e "$lt_sed_naive_backslashify"` - ;; - * ) - # unfortunately, winepath doesn't convert pathlists - func_to_host_pathlist_result="" - func_to_host_pathlist_oldIFS=$IFS - IFS=: - for func_to_host_pathlist_f in $func_to_host_pathlist_tmp1 ; do - IFS=$func_to_host_pathlist_oldIFS - if test -n "$func_to_host_pathlist_f" ; then - func_to_host_path "$func_to_host_pathlist_f" - if test -n "$func_to_host_path_result" ; then - if test -z "$func_to_host_pathlist_result" ; then - func_to_host_pathlist_result="$func_to_host_path_result" - else - func_to_host_pathlist_result="$func_to_host_pathlist_result;$func_to_host_path_result" - fi - fi - fi - IFS=: - done - IFS=$func_to_host_pathlist_oldIFS - ;; - esac - if test -z "$func_to_host_pathlist_result" ; then - func_error "Could not determine the host path(s) corresponding to" - func_error " '$1'" - func_error "Continuing, but uninstalled executables may not work." - # Fallback. This may break if $1 contains DOS-style drive - # specifications. The fix is not to complicate the expression - # below, but for the user to provide a working wine installation - # with winepath so that path translation in the cross-to-mingw - # case works properly. - lt_replace_pathsep_nix_to_dos="s|:|;|g" - func_to_host_pathlist_result=`echo "$func_to_host_pathlist_tmp1" |\ - $SED -e "$lt_replace_pathsep_nix_to_dos"` - fi - # Now, add the leading and trailing path separators back - case "$1" in - :* ) func_to_host_pathlist_result=";$func_to_host_pathlist_result" - ;; - esac - case "$1" in - *: ) func_to_host_pathlist_result="$func_to_host_pathlist_result;" - ;; - esac - ;; - esac - fi -} -# end: func_to_host_pathlist - -# func_emit_cwrapperexe_src -# emit the source code for a wrapper executable on stdout -# Must ONLY be called from within func_mode_link because -# it depends on a number of variable set therein. -func_emit_cwrapperexe_src () -{ - cat < -#include -#ifdef _MSC_VER -# include -# include -# include -# define setmode _setmode -#else -# include -# include -# ifdef __CYGWIN__ -# include -# define HAVE_SETENV -# ifdef __STRICT_ANSI__ -char *realpath (const char *, char *); -int putenv (char *); -int setenv (const char *, const char *, int); -# endif -# endif -#endif -#include -#include -#include -#include -#include -#include -#include -#include - -#if defined(PATH_MAX) -# define LT_PATHMAX PATH_MAX -#elif defined(MAXPATHLEN) -# define LT_PATHMAX MAXPATHLEN -#else -# define LT_PATHMAX 1024 -#endif - -#ifndef S_IXOTH -# define S_IXOTH 0 -#endif -#ifndef S_IXGRP -# define S_IXGRP 0 -#endif - -#ifdef _MSC_VER -# define S_IXUSR _S_IEXEC -# define stat _stat -# ifndef _INTPTR_T_DEFINED -# define intptr_t int -# endif -#endif - -#ifndef DIR_SEPARATOR -# define DIR_SEPARATOR '/' -# define PATH_SEPARATOR ':' -#endif - -#if defined (_WIN32) || defined (__MSDOS__) || defined (__DJGPP__) || \ - defined (__OS2__) -# define HAVE_DOS_BASED_FILE_SYSTEM -# define FOPEN_WB "wb" -# ifndef DIR_SEPARATOR_2 -# define DIR_SEPARATOR_2 '\\' -# endif -# ifndef PATH_SEPARATOR_2 -# define PATH_SEPARATOR_2 ';' -# endif -#endif - -#ifndef DIR_SEPARATOR_2 -# define IS_DIR_SEPARATOR(ch) ((ch) == DIR_SEPARATOR) -#else /* DIR_SEPARATOR_2 */ -# define IS_DIR_SEPARATOR(ch) \ - (((ch) == DIR_SEPARATOR) || ((ch) == DIR_SEPARATOR_2)) -#endif /* DIR_SEPARATOR_2 */ - -#ifndef PATH_SEPARATOR_2 -# define IS_PATH_SEPARATOR(ch) ((ch) == PATH_SEPARATOR) -#else /* PATH_SEPARATOR_2 */ -# define IS_PATH_SEPARATOR(ch) ((ch) == PATH_SEPARATOR_2) -#endif /* PATH_SEPARATOR_2 */ - -#ifdef __CYGWIN__ -# define FOPEN_WB "wb" -#endif - -#ifndef FOPEN_WB -# define FOPEN_WB "w" -#endif -#ifndef _O_BINARY -# define _O_BINARY 0 -#endif - -#define XMALLOC(type, num) ((type *) xmalloc ((num) * sizeof(type))) -#define XFREE(stale) do { \ - if (stale) { free ((void *) stale); stale = 0; } \ -} while (0) - -#undef LTWRAPPER_DEBUGPRINTF -#if defined DEBUGWRAPPER -# define LTWRAPPER_DEBUGPRINTF(args) ltwrapper_debugprintf args -static void -ltwrapper_debugprintf (const char *fmt, ...) -{ - va_list args; - va_start (args, fmt); - (void) vfprintf (stderr, fmt, args); - va_end (args); -} -#else -# define LTWRAPPER_DEBUGPRINTF(args) -#endif - -const char *program_name = NULL; - -void *xmalloc (size_t num); -char *xstrdup (const char *string); -const char *base_name (const char *name); -char *find_executable (const char *wrapper); -char *chase_symlinks (const char *pathspec); -int make_executable (const char *path); -int check_executable (const char *path); -char *strendzap (char *str, const char *pat); -void lt_fatal (const char *message, ...); -void lt_setenv (const char *name, const char *value); -char *lt_extend_str (const char *orig_value, const char *add, int to_end); -void lt_opt_process_env_set (const char *arg); -void lt_opt_process_env_prepend (const char *arg); -void lt_opt_process_env_append (const char *arg); -int lt_split_name_value (const char *arg, char** name, char** value); -void lt_update_exe_path (const char *name, const char *value); -void lt_update_lib_path (const char *name, const char *value); - -static const char *script_text_part1 = -EOF - - func_emit_wrapper_part1 yes | - $SED -e 's/\([\\"]\)/\\\1/g' \ - -e 's/^/ "/' -e 's/$/\\n"/' - echo ";" - cat <"))); - for (i = 0; i < newargc; i++) - { - LTWRAPPER_DEBUGPRINTF (("(main) newargz[%d] : %s\n", i, (newargz[i] ? newargz[i] : ""))); - } - -EOF - - case $host_os in - mingw*) - cat <<"EOF" - /* execv doesn't actually work on mingw as expected on unix */ - rval = _spawnv (_P_WAIT, lt_argv_zero, (const char * const *) newargz); - if (rval == -1) - { - /* failed to start process */ - LTWRAPPER_DEBUGPRINTF (("(main) failed to launch target \"%s\": errno = %d\n", lt_argv_zero, errno)); - return 127; - } - return rval; -EOF - ;; - *) - cat <<"EOF" - execv (lt_argv_zero, newargz); - return rval; /* =127, but avoids unused variable warning */ -EOF - ;; - esac - - cat <<"EOF" -} - -void * -xmalloc (size_t num) -{ - void *p = (void *) malloc (num); - if (!p) - lt_fatal ("Memory exhausted"); - - return p; -} - -char * -xstrdup (const char *string) -{ - return string ? strcpy ((char *) xmalloc (strlen (string) + 1), - string) : NULL; -} - -const char * -base_name (const char *name) -{ - const char *base; - -#if defined (HAVE_DOS_BASED_FILE_SYSTEM) - /* Skip over the disk name in MSDOS pathnames. */ - if (isalpha ((unsigned char) name[0]) && name[1] == ':') - name += 2; -#endif - - for (base = name; *name; name++) - if (IS_DIR_SEPARATOR (*name)) - base = name + 1; - return base; -} - -int -check_executable (const char *path) -{ - struct stat st; - - LTWRAPPER_DEBUGPRINTF (("(check_executable) : %s\n", - path ? (*path ? path : "EMPTY!") : "NULL!")); - if ((!path) || (!*path)) - return 0; - - if ((stat (path, &st) >= 0) - && (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))) - return 1; - else - return 0; -} - -int -make_executable (const char *path) -{ - int rval = 0; - struct stat st; - - LTWRAPPER_DEBUGPRINTF (("(make_executable) : %s\n", - path ? (*path ? path : "EMPTY!") : "NULL!")); - if ((!path) || (!*path)) - return 0; - - if (stat (path, &st) >= 0) - { - rval = chmod (path, st.st_mode | S_IXOTH | S_IXGRP | S_IXUSR); - } - return rval; -} - -/* Searches for the full path of the wrapper. Returns - newly allocated full path name if found, NULL otherwise - Does not chase symlinks, even on platforms that support them. -*/ -char * -find_executable (const char *wrapper) -{ - int has_slash = 0; - const char *p; - const char *p_next; - /* static buffer for getcwd */ - char tmp[LT_PATHMAX + 1]; - int tmp_len; - char *concat_name; - - LTWRAPPER_DEBUGPRINTF (("(find_executable) : %s\n", - wrapper ? (*wrapper ? wrapper : "EMPTY!") : "NULL!")); - - if ((wrapper == NULL) || (*wrapper == '\0')) - return NULL; - - /* Absolute path? */ -#if defined (HAVE_DOS_BASED_FILE_SYSTEM) - if (isalpha ((unsigned char) wrapper[0]) && wrapper[1] == ':') - { - concat_name = xstrdup (wrapper); - if (check_executable (concat_name)) - return concat_name; - XFREE (concat_name); - } - else - { -#endif - if (IS_DIR_SEPARATOR (wrapper[0])) - { - concat_name = xstrdup (wrapper); - if (check_executable (concat_name)) - return concat_name; - XFREE (concat_name); - } -#if defined (HAVE_DOS_BASED_FILE_SYSTEM) - } -#endif - - for (p = wrapper; *p; p++) - if (*p == '/') - { - has_slash = 1; - break; - } - if (!has_slash) - { - /* no slashes; search PATH */ - const char *path = getenv ("PATH"); - if (path != NULL) - { - for (p = path; *p; p = p_next) - { - const char *q; - size_t p_len; - for (q = p; *q; q++) - if (IS_PATH_SEPARATOR (*q)) - break; - p_len = q - p; - p_next = (*q == '\0' ? q : q + 1); - if (p_len == 0) - { - /* empty path: current directory */ - if (getcwd (tmp, LT_PATHMAX) == NULL) - lt_fatal ("getcwd failed"); - tmp_len = strlen (tmp); - concat_name = - XMALLOC (char, tmp_len + 1 + strlen (wrapper) + 1); - memcpy (concat_name, tmp, tmp_len); - concat_name[tmp_len] = '/'; - strcpy (concat_name + tmp_len + 1, wrapper); - } - else - { - concat_name = - XMALLOC (char, p_len + 1 + strlen (wrapper) + 1); - memcpy (concat_name, p, p_len); - concat_name[p_len] = '/'; - strcpy (concat_name + p_len + 1, wrapper); - } - if (check_executable (concat_name)) - return concat_name; - XFREE (concat_name); - } - } - /* not found in PATH; assume curdir */ - } - /* Relative path | not found in path: prepend cwd */ - if (getcwd (tmp, LT_PATHMAX) == NULL) - lt_fatal ("getcwd failed"); - tmp_len = strlen (tmp); - concat_name = XMALLOC (char, tmp_len + 1 + strlen (wrapper) + 1); - memcpy (concat_name, tmp, tmp_len); - concat_name[tmp_len] = '/'; - strcpy (concat_name + tmp_len + 1, wrapper); - - if (check_executable (concat_name)) - return concat_name; - XFREE (concat_name); - return NULL; -} - -char * -chase_symlinks (const char *pathspec) -{ -#ifndef S_ISLNK - return xstrdup (pathspec); -#else - char buf[LT_PATHMAX]; - struct stat s; - char *tmp_pathspec = xstrdup (pathspec); - char *p; - int has_symlinks = 0; - while (strlen (tmp_pathspec) && !has_symlinks) - { - LTWRAPPER_DEBUGPRINTF (("checking path component for symlinks: %s\n", - tmp_pathspec)); - if (lstat (tmp_pathspec, &s) == 0) - { - if (S_ISLNK (s.st_mode) != 0) - { - has_symlinks = 1; - break; - } - - /* search backwards for last DIR_SEPARATOR */ - p = tmp_pathspec + strlen (tmp_pathspec) - 1; - while ((p > tmp_pathspec) && (!IS_DIR_SEPARATOR (*p))) - p--; - if ((p == tmp_pathspec) && (!IS_DIR_SEPARATOR (*p))) - { - /* no more DIR_SEPARATORS left */ - break; - } - *p = '\0'; - } - else - { - char *errstr = strerror (errno); - lt_fatal ("Error accessing file %s (%s)", tmp_pathspec, errstr); - } - } - XFREE (tmp_pathspec); - - if (!has_symlinks) - { - return xstrdup (pathspec); - } - - tmp_pathspec = realpath (pathspec, buf); - if (tmp_pathspec == 0) - { - lt_fatal ("Could not follow symlinks for %s", pathspec); - } - return xstrdup (tmp_pathspec); -#endif -} - -char * -strendzap (char *str, const char *pat) -{ - size_t len, patlen; - - assert (str != NULL); - assert (pat != NULL); - - len = strlen (str); - patlen = strlen (pat); - - if (patlen <= len) - { - str += len - patlen; - if (strcmp (str, pat) == 0) - *str = '\0'; - } - return str; -} - -static void -lt_error_core (int exit_status, const char *mode, - const char *message, va_list ap) -{ - fprintf (stderr, "%s: %s: ", program_name, mode); - vfprintf (stderr, message, ap); - fprintf (stderr, ".\n"); - - if (exit_status >= 0) - exit (exit_status); -} - -void -lt_fatal (const char *message, ...) -{ - va_list ap; - va_start (ap, message); - lt_error_core (EXIT_FAILURE, "FATAL", message, ap); - va_end (ap); -} - -void -lt_setenv (const char *name, const char *value) -{ - LTWRAPPER_DEBUGPRINTF (("(lt_setenv) setting '%s' to '%s'\n", - (name ? name : ""), - (value ? value : ""))); - { -#ifdef HAVE_SETENV - /* always make a copy, for consistency with !HAVE_SETENV */ - char *str = xstrdup (value); - setenv (name, str, 1); -#else - int len = strlen (name) + 1 + strlen (value) + 1; - char *str = XMALLOC (char, len); - sprintf (str, "%s=%s", name, value); - if (putenv (str) != EXIT_SUCCESS) - { - XFREE (str); - } -#endif - } -} - -char * -lt_extend_str (const char *orig_value, const char *add, int to_end) -{ - char *new_value; - if (orig_value && *orig_value) - { - int orig_value_len = strlen (orig_value); - int add_len = strlen (add); - new_value = XMALLOC (char, add_len + orig_value_len + 1); - if (to_end) - { - strcpy (new_value, orig_value); - strcpy (new_value + orig_value_len, add); - } - else - { - strcpy (new_value, add); - strcpy (new_value + add_len, orig_value); - } - } - else - { - new_value = xstrdup (add); - } - return new_value; -} - -int -lt_split_name_value (const char *arg, char** name, char** value) -{ - const char *p; - int len; - if (!arg || !*arg) - return 1; - - p = strchr (arg, (int)'='); - - if (!p) - return 1; - - *value = xstrdup (++p); - - len = strlen (arg) - strlen (*value); - *name = XMALLOC (char, len); - strncpy (*name, arg, len-1); - (*name)[len - 1] = '\0'; - - return 0; -} - -void -lt_opt_process_env_set (const char *arg) -{ - char *name = NULL; - char *value = NULL; - - if (lt_split_name_value (arg, &name, &value) != 0) - { - XFREE (name); - XFREE (value); - lt_fatal ("bad argument for %s: '%s'", env_set_opt, arg); - } - - lt_setenv (name, value); - XFREE (name); - XFREE (value); -} - -void -lt_opt_process_env_prepend (const char *arg) -{ - char *name = NULL; - char *value = NULL; - char *new_value = NULL; - - if (lt_split_name_value (arg, &name, &value) != 0) - { - XFREE (name); - XFREE (value); - lt_fatal ("bad argument for %s: '%s'", env_prepend_opt, arg); - } - - new_value = lt_extend_str (getenv (name), value, 0); - lt_setenv (name, new_value); - XFREE (new_value); - XFREE (name); - XFREE (value); -} - -void -lt_opt_process_env_append (const char *arg) -{ - char *name = NULL; - char *value = NULL; - char *new_value = NULL; - - if (lt_split_name_value (arg, &name, &value) != 0) - { - XFREE (name); - XFREE (value); - lt_fatal ("bad argument for %s: '%s'", env_append_opt, arg); - } - - new_value = lt_extend_str (getenv (name), value, 1); - lt_setenv (name, new_value); - XFREE (new_value); - XFREE (name); - XFREE (value); -} - -void -lt_update_exe_path (const char *name, const char *value) -{ - LTWRAPPER_DEBUGPRINTF (("(lt_update_exe_path) modifying '%s' by prepending '%s'\n", - (name ? name : ""), - (value ? value : ""))); - - if (name && *name && value && *value) - { - char *new_value = lt_extend_str (getenv (name), value, 0); - /* some systems can't cope with a ':'-terminated path #' */ - int len = strlen (new_value); - while (((len = strlen (new_value)) > 0) && IS_PATH_SEPARATOR (new_value[len-1])) - { - new_value[len-1] = '\0'; - } - lt_setenv (name, new_value); - XFREE (new_value); - } -} - -void -lt_update_lib_path (const char *name, const char *value) -{ - LTWRAPPER_DEBUGPRINTF (("(lt_update_lib_path) modifying '%s' by prepending '%s'\n", - (name ? name : ""), - (value ? value : ""))); - - if (name && *name && value && *value) - { - char *new_value = lt_extend_str (getenv (name), value, 0); - lt_setenv (name, new_value); - XFREE (new_value); - } -} - - -EOF -} -# end: func_emit_cwrapperexe_src - -# func_mode_link arg... -func_mode_link () -{ - $opt_debug - case $host in - *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*) - # It is impossible to link a dll without this setting, and - # we shouldn't force the makefile maintainer to figure out - # which system we are compiling for in order to pass an extra - # flag for every libtool invocation. - # allow_undefined=no - - # FIXME: Unfortunately, there are problems with the above when trying - # to make a dll which has undefined symbols, in which case not - # even a static library is built. For now, we need to specify - # -no-undefined on the libtool link line when we can be certain - # that all symbols are satisfied, otherwise we get a static library. - allow_undefined=yes - ;; - *) - allow_undefined=yes - ;; - esac - libtool_args=$nonopt - base_compile="$nonopt $@" - compile_command=$nonopt - finalize_command=$nonopt - - compile_rpath= - finalize_rpath= - compile_shlibpath= - finalize_shlibpath= - convenience= - old_convenience= - deplibs= - old_deplibs= - compiler_flags= - linker_flags= - dllsearchpath= - lib_search_path=`pwd` - inst_prefix_dir= - new_inherited_linker_flags= - - avoid_version=no - dlfiles= - dlprefiles= - dlself=no - export_dynamic=no - export_symbols= - export_symbols_regex= - generated= - libobjs= - ltlibs= - module=no - no_install=no - objs= - non_pic_objects= - precious_files_regex= - prefer_static_libs=no - preload=no - prev= - prevarg= - release= - rpath= - xrpath= - perm_rpath= - temp_rpath= - thread_safe=no - vinfo= - vinfo_number=no - weak_libs= - single_module="${wl}-single_module" - func_infer_tag $base_compile - - # We need to know -static, to get the right output filenames. - for arg - do - case $arg in - -shared) - test "$build_libtool_libs" != yes && \ - func_fatal_configuration "can not build a shared library" - build_old_libs=no - break - ;; - -all-static | -static | -static-libtool-libs) - case $arg in - -all-static) - if test "$build_libtool_libs" = yes && test -z "$link_static_flag"; then - func_warning "complete static linking is impossible in this configuration" - fi - if test -n "$link_static_flag"; then - dlopen_self=$dlopen_self_static - fi - prefer_static_libs=yes - ;; - -static) - if test -z "$pic_flag" && test -n "$link_static_flag"; then - dlopen_self=$dlopen_self_static - fi - prefer_static_libs=built - ;; - -static-libtool-libs) - if test -z "$pic_flag" && test -n "$link_static_flag"; then - dlopen_self=$dlopen_self_static - fi - prefer_static_libs=yes - ;; - esac - build_libtool_libs=no - build_old_libs=yes - break - ;; - esac - done - - # See if our shared archives depend on static archives. - test -n "$old_archive_from_new_cmds" && build_old_libs=yes - - # Go through the arguments, transforming them on the way. - while test "$#" -gt 0; do - arg="$1" - shift - func_quote_for_eval "$arg" - qarg=$func_quote_for_eval_unquoted_result - func_append libtool_args " $func_quote_for_eval_result" - - # If the previous option needs an argument, assign it. - if test -n "$prev"; then - case $prev in - output) - func_append compile_command " @OUTPUT@" - func_append finalize_command " @OUTPUT@" - ;; - esac - - case $prev in - dlfiles|dlprefiles) - if test "$preload" = no; then - # Add the symbol object into the linking commands. - func_append compile_command " @SYMFILE@" - func_append finalize_command " @SYMFILE@" - preload=yes - fi - case $arg in - *.la | *.lo) ;; # We handle these cases below. - force) - if test "$dlself" = no; then - dlself=needless - export_dynamic=yes - fi - prev= - continue - ;; - self) - if test "$prev" = dlprefiles; then - dlself=yes - elif test "$prev" = dlfiles && test "$dlopen_self" != yes; then - dlself=yes - else - dlself=needless - export_dynamic=yes - fi - prev= - continue - ;; - *) - if test "$prev" = dlfiles; then - dlfiles="$dlfiles $arg" - else - dlprefiles="$dlprefiles $arg" - fi - prev= - continue - ;; - esac - ;; - expsyms) - export_symbols="$arg" - test -f "$arg" \ - || func_fatal_error "symbol file \`$arg' does not exist" - prev= - continue - ;; - expsyms_regex) - export_symbols_regex="$arg" - prev= - continue - ;; - framework) - case $host in - *-*-darwin*) - case "$deplibs " in - *" $qarg.ltframework "*) ;; - *) deplibs="$deplibs $qarg.ltframework" # this is fixed later - ;; - esac - ;; - esac - prev= - continue - ;; - inst_prefix) - inst_prefix_dir="$arg" - prev= - continue - ;; - objectlist) - if test -f "$arg"; then - save_arg=$arg - moreargs= - for fil in `cat "$save_arg"` - do -# moreargs="$moreargs $fil" - arg=$fil - # A libtool-controlled object. - - # Check to see that this really is a libtool object. - if func_lalib_unsafe_p "$arg"; then - pic_object= - non_pic_object= - - # Read the .lo file - func_source "$arg" - - if test -z "$pic_object" || - test -z "$non_pic_object" || - test "$pic_object" = none && - test "$non_pic_object" = none; then - func_fatal_error "cannot find name of object for \`$arg'" - fi - - # Extract subdirectory from the argument. - func_dirname "$arg" "/" "" - xdir="$func_dirname_result" - - if test "$pic_object" != none; then - # Prepend the subdirectory the object is found in. - pic_object="$xdir$pic_object" - - if test "$prev" = dlfiles; then - if test "$build_libtool_libs" = yes && test "$dlopen_support" = yes; then - dlfiles="$dlfiles $pic_object" - prev= - continue - else - # If libtool objects are unsupported, then we need to preload. - prev=dlprefiles - fi - fi - - # CHECK ME: I think I busted this. -Ossama - if test "$prev" = dlprefiles; then - # Preload the old-style object. - dlprefiles="$dlprefiles $pic_object" - prev= - fi - - # A PIC object. - func_append libobjs " $pic_object" - arg="$pic_object" - fi - - # Non-PIC object. - if test "$non_pic_object" != none; then - # Prepend the subdirectory the object is found in. - non_pic_object="$xdir$non_pic_object" - - # A standard non-PIC object - func_append non_pic_objects " $non_pic_object" - if test -z "$pic_object" || test "$pic_object" = none ; then - arg="$non_pic_object" - fi - else - # If the PIC object exists, use it instead. - # $xdir was prepended to $pic_object above. - non_pic_object="$pic_object" - func_append non_pic_objects " $non_pic_object" - fi - else - # Only an error if not doing a dry-run. - if $opt_dry_run; then - # Extract subdirectory from the argument. - func_dirname "$arg" "/" "" - xdir="$func_dirname_result" - - func_lo2o "$arg" - pic_object=$xdir$objdir/$func_lo2o_result - non_pic_object=$xdir$func_lo2o_result - func_append libobjs " $pic_object" - func_append non_pic_objects " $non_pic_object" - else - func_fatal_error "\`$arg' is not a valid libtool object" - fi - fi - done - else - func_fatal_error "link input file \`$arg' does not exist" - fi - arg=$save_arg - prev= - continue - ;; - precious_regex) - precious_files_regex="$arg" - prev= - continue - ;; - release) - release="-$arg" - prev= - continue - ;; - rpath | xrpath) - # We need an absolute path. - case $arg in - [\\/]* | [A-Za-z]:[\\/]*) ;; - *) - func_fatal_error "only absolute run-paths are allowed" - ;; - esac - if test "$prev" = rpath; then - case "$rpath " in - *" $arg "*) ;; - *) rpath="$rpath $arg" ;; - esac - else - case "$xrpath " in - *" $arg "*) ;; - *) xrpath="$xrpath $arg" ;; - esac - fi - prev= - continue - ;; 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- *) lib_linked=no ;; - esac - - if test "$lib_linked" != yes; then - func_fatal_configuration "unsupported hardcode properties" - fi - - if test -n "$add_shlibpath"; then - case :$compile_shlibpath: in - *":$add_shlibpath:"*) ;; - *) compile_shlibpath="$compile_shlibpath$add_shlibpath:" ;; - esac - fi - if test "$linkmode" = prog; then - test -n "$add_dir" && compile_deplibs="$add_dir $compile_deplibs" - test -n "$add" && compile_deplibs="$add $compile_deplibs" - else - test -n "$add_dir" && deplibs="$add_dir $deplibs" - test -n "$add" && deplibs="$add $deplibs" - if test "$hardcode_direct" != yes && - test "$hardcode_minus_L" != yes && - test "$hardcode_shlibpath_var" = yes; then - case :$finalize_shlibpath: in - *":$libdir:"*) ;; - *) finalize_shlibpath="$finalize_shlibpath$libdir:" ;; - esac - fi - fi - fi - - if test "$linkmode" = prog || test "$mode" = relink; then - add_shlibpath= - add_dir= - add= - # Finalize command for both is simple: just hardcode it. - if test "$hardcode_direct" = yes && - test "$hardcode_direct_absolute" = no; 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then - # Here we assume that one of hardcode_direct or hardcode_minus_L - # is not unsupported. 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then - if test -n "$perm_rpath"; then - # We should set the runpath_var. - rpath= - for dir in $perm_rpath; do - rpath="$rpath$dir:" - done - compile_var="$runpath_var=\"$rpath\$$runpath_var\" " - fi - if test -n "$finalize_perm_rpath"; then - # We should set the runpath_var. - rpath= - for dir in $finalize_perm_rpath; do - rpath="$rpath$dir:" - done - finalize_var="$runpath_var=\"$rpath\$$runpath_var\" " - fi - fi - - if test "$no_install" = yes; then - # We don't need to create a wrapper script. - link_command="$compile_var$compile_command$compile_rpath" - # Replace the output file specification. - link_command=`$ECHO "X$link_command" | $Xsed -e 's%@OUTPUT@%'"$output"'%g'` - # Delete the old output file. - $opt_dry_run || $RM $output - # Link the executable and exit - func_show_eval "$link_command" 'exit $?' - exit $EXIT_SUCCESS - fi - - if test "$hardcode_action" = relink; then - # Fast installation is not supported - link_command="$compile_var$compile_command$compile_rpath" - relink_command="$finalize_var$finalize_command$finalize_rpath" - - func_warning "this platform does not like uninstalled shared libraries" - func_warning "\`$output' will be relinked during installation" - else - if test "$fast_install" != no; 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This is usually the same -# as BCC, unless you are cross-compiling. -# -# AR Tools used to build a static library. -# RANLIB -# -# TCL_FLAGS Extra compiler options needed for programs that use the -# TCL library. -# -# LIBTCL Linker options needed to link against the TCL library. -# -# READLINE_FLAGS Compiler options needed for programs that use the -# readline() library. -# -# LIBREADLINE Linker options needed by programs using readline() must -# link against. -# -# NAWK Nawk compatible awk program. Older (obsolete?) solaris -# systems need this to avoid using the original AT&T AWK. -# -# Once the macros above are defined, the rest of this make script will -# build the SQLite library and testing tools. -################################################################################ - -# This is how we compile -# -TCCX = $(TCC) $(OPTS) -I. -I$(TOP)/src -I$(TOP) -TCCX += -I$(TOP)/ext/rtree -I$(TOP)/ext/icu -I$(TOP)/ext/fts3 -TCCX += -I$(TOP)/ext/async - -# Object files for the SQLite library. -# -LIBOBJ+= alter.o analyze.o attach.o auth.o \ - backup.o bitvec.o btmutex.o btree.o build.o \ - callback.o complete.o ctime.o date.o delete.o expr.o fault.o fkey.o \ - fts3.o fts3_aux.o fts3_expr.o fts3_hash.o fts3_icu.o fts3_porter.o \ - fts3_snippet.o fts3_tokenizer.o fts3_tokenizer1.o \ - fts3_write.o func.o global.o hash.o \ - icu.o insert.o journal.o legacy.o loadext.o \ - main.o malloc.o mem0.o mem1.o mem2.o mem3.o mem5.o \ - memjournal.o \ - mutex.o mutex_noop.o mutex_os2.o mutex_unix.o mutex_w32.o \ - 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$(TOP)/src/legacy.c \ - $(TOP)/src/loadext.c \ - $(TOP)/src/main.c \ - $(TOP)/src/malloc.c \ - $(TOP)/src/mem0.c \ - $(TOP)/src/mem1.c \ - $(TOP)/src/mem2.c \ - $(TOP)/src/mem3.c \ - $(TOP)/src/mem5.c \ - $(TOP)/src/memjournal.c \ - $(TOP)/src/mutex.c \ - $(TOP)/src/mutex.h \ - $(TOP)/src/mutex_noop.c \ - $(TOP)/src/mutex_os2.c \ - $(TOP)/src/mutex_unix.c \ - $(TOP)/src/mutex_w32.c \ - $(TOP)/src/notify.c \ - $(TOP)/src/os.c \ - $(TOP)/src/os.h \ - $(TOP)/src/os_common.h \ - $(TOP)/src/os_os2.c \ - $(TOP)/src/os_unix.c \ - $(TOP)/src/os_win.c \ - $(TOP)/src/pager.c \ - $(TOP)/src/pager.h \ - $(TOP)/src/parse.y \ - $(TOP)/src/pcache.c \ - $(TOP)/src/pcache.h \ - $(TOP)/src/pcache1.c \ - $(TOP)/src/pragma.c \ - $(TOP)/src/prepare.c \ - $(TOP)/src/printf.c \ - $(TOP)/src/random.c \ - $(TOP)/src/resolve.c \ - $(TOP)/src/rowset.c \ - $(TOP)/src/select.c \ - $(TOP)/src/status.c \ - $(TOP)/src/shell.c \ - $(TOP)/src/sqlite.h.in \ - $(TOP)/src/sqlite3ext.h \ - $(TOP)/src/sqliteInt.h \ - $(TOP)/src/sqliteLimit.h \ - $(TOP)/src/table.c \ - $(TOP)/src/tclsqlite.c \ - $(TOP)/src/tokenize.c \ - $(TOP)/src/trigger.c \ - $(TOP)/src/utf.c \ - $(TOP)/src/update.c \ - $(TOP)/src/util.c \ - $(TOP)/src/vacuum.c \ - $(TOP)/src/vdbe.c \ - $(TOP)/src/vdbe.h \ - $(TOP)/src/vdbeapi.c \ - $(TOP)/src/vdbeaux.c \ - $(TOP)/src/vdbeblob.c \ - $(TOP)/src/vdbemem.c \ - $(TOP)/src/vdbesort.c \ - $(TOP)/src/vdbetrace.c \ - $(TOP)/src/vdbeInt.h \ - $(TOP)/src/vtab.c \ - $(TOP)/src/wal.c \ - $(TOP)/src/wal.h \ - $(TOP)/src/walker.c \ - $(TOP)/src/where.c - -# Source code for extensions -# -SRC += \ - $(TOP)/ext/fts1/fts1.c \ - $(TOP)/ext/fts1/fts1.h \ - $(TOP)/ext/fts1/fts1_hash.c \ - $(TOP)/ext/fts1/fts1_hash.h \ - $(TOP)/ext/fts1/fts1_porter.c \ - $(TOP)/ext/fts1/fts1_tokenizer.h \ - $(TOP)/ext/fts1/fts1_tokenizer1.c -SRC += \ - $(TOP)/ext/fts2/fts2.c \ - $(TOP)/ext/fts2/fts2.h \ - $(TOP)/ext/fts2/fts2_hash.c \ - $(TOP)/ext/fts2/fts2_hash.h \ - $(TOP)/ext/fts2/fts2_icu.c \ - $(TOP)/ext/fts2/fts2_porter.c \ - $(TOP)/ext/fts2/fts2_tokenizer.h \ - $(TOP)/ext/fts2/fts2_tokenizer.c \ - $(TOP)/ext/fts2/fts2_tokenizer1.c -SRC += \ - $(TOP)/ext/fts3/fts3.c \ - $(TOP)/ext/fts3/fts3.h \ - $(TOP)/ext/fts3/fts3Int.h \ - $(TOP)/ext/fts3/fts3_aux.c \ - $(TOP)/ext/fts3/fts3_expr.c \ - $(TOP)/ext/fts3/fts3_hash.c \ - $(TOP)/ext/fts3/fts3_hash.h \ - $(TOP)/ext/fts3/fts3_icu.c \ - $(TOP)/ext/fts3/fts3_porter.c \ - $(TOP)/ext/fts3/fts3_snippet.c \ - $(TOP)/ext/fts3/fts3_tokenizer.h \ - $(TOP)/ext/fts3/fts3_tokenizer.c \ - $(TOP)/ext/fts3/fts3_tokenizer1.c \ - $(TOP)/ext/fts3/fts3_write.c -SRC += \ - $(TOP)/ext/icu/sqliteicu.h \ - $(TOP)/ext/icu/icu.c -SRC += \ - $(TOP)/ext/rtree/rtree.h \ - $(TOP)/ext/rtree/rtree.c - - -# Generated source code files -# -SRC += \ - keywordhash.h \ - opcodes.c \ - opcodes.h \ - parse.c \ - parse.h \ - sqlite3.h - - -# Source code to the test files. -# -TESTSRC = \ - $(TOP)/ext/fts3/fts3_term.c \ - $(TOP)/ext/fts3/fts3_test.c \ - $(TOP)/src/test1.c \ - $(TOP)/src/test2.c \ - $(TOP)/src/test3.c \ - $(TOP)/src/test4.c \ - $(TOP)/src/test5.c \ - $(TOP)/src/test6.c \ - $(TOP)/src/test7.c \ - $(TOP)/src/test8.c \ - $(TOP)/src/test9.c \ - $(TOP)/src/test_autoext.c \ - $(TOP)/src/test_async.c \ - $(TOP)/src/test_backup.c \ - $(TOP)/src/test_btree.c \ - $(TOP)/src/test_config.c \ - $(TOP)/src/test_demovfs.c \ - $(TOP)/src/test_devsym.c \ - $(TOP)/src/test_func.c \ - $(TOP)/src/test_fuzzer.c \ - $(TOP)/src/test_hexio.c \ - $(TOP)/src/test_init.c \ - $(TOP)/src/test_intarray.c \ - $(TOP)/src/test_journal.c \ - $(TOP)/src/test_malloc.c \ - $(TOP)/src/test_multiplex.c \ - $(TOP)/src/test_mutex.c \ - $(TOP)/src/test_onefile.c \ - $(TOP)/src/test_osinst.c \ - $(TOP)/src/test_pcache.c \ - $(TOP)/src/test_quota.c \ - $(TOP)/src/test_rtree.c \ - $(TOP)/src/test_schema.c \ - $(TOP)/src/test_server.c \ - $(TOP)/src/test_stat.c \ - $(TOP)/src/test_superlock.c \ - $(TOP)/src/test_syscall.c \ - $(TOP)/src/test_tclvar.c \ - $(TOP)/src/test_thread.c \ - $(TOP)/src/test_vfs.c \ - $(TOP)/src/test_wholenumber.c \ - $(TOP)/src/test_wsd.c - -#TESTSRC += $(TOP)/ext/fts2/fts2_tokenizer.c -#TESTSRC += $(TOP)/ext/fts3/fts3_tokenizer.c - -TESTSRC2 = \ - $(TOP)/src/attach.c \ - $(TOP)/src/backup.c \ - $(TOP)/src/btree.c \ - $(TOP)/src/build.c \ - $(TOP)/src/date.c \ - $(TOP)/src/expr.c \ - $(TOP)/src/func.c \ - $(TOP)/src/insert.c \ - $(TOP)/src/wal.c \ - $(TOP)/src/mem5.c \ - $(TOP)/src/os.c \ - $(TOP)/src/os_os2.c \ - $(TOP)/src/os_unix.c \ - $(TOP)/src/os_win.c \ - $(TOP)/src/pager.c \ - $(TOP)/src/pragma.c \ - $(TOP)/src/prepare.c \ - $(TOP)/src/printf.c \ - $(TOP)/src/random.c \ - $(TOP)/src/pcache.c \ - $(TOP)/src/pcache1.c \ - $(TOP)/src/select.c \ - $(TOP)/src/tokenize.c \ - $(TOP)/src/utf.c \ - $(TOP)/src/util.c \ - $(TOP)/src/vdbeapi.c \ - $(TOP)/src/vdbeaux.c \ - $(TOP)/src/vdbe.c \ - $(TOP)/src/vdbemem.c \ - $(TOP)/src/where.c \ - parse.c \ - $(TOP)/ext/fts3/fts3.c \ - $(TOP)/ext/fts3/fts3_aux.c \ - $(TOP)/ext/fts3/fts3_expr.c \ - $(TOP)/ext/fts3/fts3_tokenizer.c \ - $(TOP)/ext/fts3/fts3_write.c \ - $(TOP)/ext/async/sqlite3async.c - 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tool/split-sqlite3c.tcl d9be87f1c340285a3e081eb19b4a247981ed290c -F tool/symbols-mingw.sh 4dbcea7e74768305384c9fd2ed2b41bbf9f0414d -F tool/symbols.sh fec58532668296d7c7dc48be9c87f75ccdb5814f -F tool/tostr.awk e75472c2f98dd76e06b8c9c1367f4ab07e122d06 -F tool/vdbe-compress.tcl d70ea6d8a19e3571d7ab8c9b75cba86d1173ff0f -F tool/warnings-clang.sh 9f406d66e750e8ac031c63a9ef3248aaa347ef2a -F tool/warnings.sh fbc018d67fd7395f440c28f33ef0f94420226381 -P 6635cd9a7714b681dd8aa96e90be462a40d10178 -R b059ff356abfc5b4524a9b548916f43e -T +sym-version-3.7.9 * -U drh -Z a9ecbb5c487c786a176874d979505217 diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/manifest.uuid b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/manifest.uuid deleted file mode 100644 index 93e7ec9909..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/manifest.uuid +++ /dev/null @@ -1 +0,0 @@ -c7c6050ef060877ebe77b41d959e9df13f8c9b5e diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/mkdll.sh b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/mkdll.sh deleted file mode 100644 index 9e9c1a7c30..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/mkdll.sh +++ /dev/null @@ -1,49 +0,0 @@ -#!/bin/sh -# -# This script is used to compile SQLite into a DLL. -# -# Two separate DLLs are generated. "sqlite3.dll" is the core -# library. "tclsqlite3.dll" contains the TCL bindings and is the -# library that is loaded into TCL in order to run SQLite. -# -make sqlite3.c -PATH=$PATH:/opt/mingw/bin -TCLDIR=/home/drh/tcltk/846/win/846win -TCLSTUBLIB=$TCLDIR/libtcl84stub.a -OPTS='-DUSE_TCL_STUBS=1 -DBUILD_sqlite=1 -DSQLITE_OS_WIN=1' -OPTS="$OPTS -DSQLITE_THREADSAFE=1" -OPTS="$OPTS -DSQLITE_ENABLE_FTS3=1" -OPTS="$OPTS -DSQLITE_ENABLE_RTREE=1" -OPTS="$OPTS -DSQLITE_ENABLE_COLUMN_METADATA=1" -CC="i386-mingw32msvc-gcc -Os $OPTS -Itsrc -I$TCLDIR" -NM="i386-mingw32msvc-nm" -CMD="$CC -c sqlite3.c" -echo $CMD -$CMD -CMD="$CC -c tclsqlite3.c" -echo $CMD -$CMD -echo 'EXPORTS' >tclsqlite3.def -$NM tclsqlite3.o | grep ' T ' >temp1 -grep '_Init$' temp1 >temp2 -grep '_SafeInit$' temp1 >>temp2 -grep ' T _sqlite3_' temp1 >>temp2 -echo 'EXPORTS' >tclsqlite3.def -sed 's/^.* T _//' temp2 | sort | uniq >>tclsqlite3.def -i386-mingw32msvc-dllwrap \ - --def tclsqlite3.def -v --export-all \ - --driver-name i386-mingw32msvc-gcc \ - --dlltool-name i386-mingw32msvc-dlltool \ - --as i386-mingw32msvc-as \ - --target i386-mingw32 \ - -dllname tclsqlite3.dll -lmsvcrt tclsqlite3.o $TCLSTUBLIB -$NM sqlite3.o | grep ' T ' >temp1 -echo 'EXPORTS' >sqlite3.def -grep ' _sqlite3_' temp1 | sed 's/^.* _//' >>sqlite3.def -i386-mingw32msvc-dllwrap \ - --def sqlite3.def -v --export-all \ - --driver-name i386-mingw32msvc-gcc \ - --dlltool-name i386-mingw32msvc-dlltool \ - --as i386-mingw32msvc-as \ - --target i386-mingw32 \ - -dllname sqlite3.dll -lmsvcrt sqlite3.o diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/mkextu.sh b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/mkextu.sh deleted file mode 100644 index 2f1a049c73..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/mkextu.sh +++ /dev/null @@ -1,13 +0,0 @@ -#!/bin/sh -# -# This script is used to compile SQLite into a shared library on Linux. -# -# Two separate shared libraries are generated. "sqlite3.so" is the core -# library. "tclsqlite3.so" contains the TCL bindings and is the -# library that is loaded into TCL in order to run SQLite. -# -CFLAGS=-O2 -Wall -make fts2amal.c -echo gcc $CFLAGS -shared fts2amal.c -o fts2.so -gcc $CFLAGS -shared fts2amal.c -o fts2.so -strip fts2.so diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/mkextw.sh b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/mkextw.sh deleted file mode 100644 index c80f1f2081..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/mkextw.sh +++ /dev/null @@ -1,22 +0,0 @@ -#!/bin/sh -# -# This script is used to compile SQLite extensions into DLLs. -# -make fts2amal.c -PATH=$PATH:/opt/mingw/bin -OPTS='-DTHREADSAFE=1 -DBUILD_sqlite=1 -DSQLITE_OS_WIN=1' -CC="i386-mingw32msvc-gcc -O2 $OPTS -Itsrc" -NM="i386-mingw32msvc-nm" -CMD="$CC -c fts2amal.c" -echo $CMD -$CMD -echo 'EXPORTS' >fts2.def -echo 'sqlite3_extension_init' >>fts2.def -i386-mingw32msvc-dllwrap \ - --def fts2.def -v --export-all \ - --driver-name i386-mingw32msvc-gcc \ - --dlltool-name i386-mingw32msvc-dlltool \ - --as i386-mingw32msvc-as \ - --target i386-mingw32 \ - -dllname fts2.dll -lmsvcrt fts2amal.o -zip fts2dll.zip fts2.dll fts2.def diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/mkopcodec.awk b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/mkopcodec.awk deleted file mode 100644 index b93cf61065..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/mkopcodec.awk +++ /dev/null @@ -1,36 +0,0 @@ -#!/usr/bin/awk -f -# -# This AWK script scans the opcodes.h file (which is itself generated by -# another awk script) and uses the information gleaned to create the -# opcodes.c source file. -# -# Opcodes.c contains strings which are the symbolic names for the various -# opcodes used by the VDBE. These strings are used when disassembling a -# VDBE program during tracing or as a result of the EXPLAIN keyword. -# -BEGIN { - print "/* Automatically generated. Do not edit */" - print "/* See the mkopcodec.awk script for details. */" - printf "#if !defined(SQLITE_OMIT_EXPLAIN)" - printf " || !defined(NDEBUG)" - printf " || defined(VDBE_PROFILE)" - print " || defined(SQLITE_DEBUG)" - print "const char *sqlite3OpcodeName(int i){" - print " static const char *const azName[] = { \"?\"," - mx = 0 -} -/define OP_/ { - sub("OP_","",$2) - i = $3+0 - label[i] = $2 - if( mxmax ) max = op[name] - printf "#define %-25s %15d", name, op[name] - if( sameas[op[name]] ) { - printf " /* same as %-12s*/", sameas[op[name]] - } - printf "\n" - - } - seenUnused = 0; - for(i=1; i $HOME/.rpmmacros -echo "%_topdir %{HOME}/rpm" >> $HOME/.rpmmacros -mkdir $HOME/rpm -mkdir $HOME/rpm/BUILD -mkdir $HOME/rpm/SOURCES -mkdir $HOME/rpm/RPMS -mkdir $HOME/rpm/SRPMS -mkdir $HOME/rpm/SPECS - -# create the spec file from the template -sed s/SQLITE_VERSION/$VERS/g $srcdir/spec.template > $HOME/rpm/SPECS/sqlite.spec - -# copy the source tarball to the rpm directory -cp doc/sqlite-$VERS.tar.gz $HOME/rpm/SOURCES/. - -# build all the rpms -rpm -ba $HOME/rpm/SPECS/sqlite.spec >& rpm-$vers.log - -# copy the RPMs into the build directory. -mv $HOME/rpm/RPMS/i386/sqlite*-$vers*.rpm doc -mv $HOME/rpm/SRPMS/sqlite-$vers*.rpm doc - -# Build the website -# -#cp $srcdir/../historical/* doc -#make doc -#cd doc -#chmod 644 *.gz diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/publish_osx.sh b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/publish_osx.sh deleted file mode 100644 index 20347ab116..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/publish_osx.sh +++ /dev/null @@ -1,35 +0,0 @@ -#!/bin/sh -# -# This script is used to compile SQLite and package everything up -# so that it is ready to move to the SQLite website. -# - -# Set srcdir to the name of the directory that contains the publish.sh -# script. -# -srcdir=`echo "$0" | sed 's%\(^.*\)/[^/][^/]*$%\1%'` - -# Get the makefile. -# -cp $srcdir/Makefile.linux-gcc ./Makefile -chmod +x $srcdir/install-sh - -# Get the current version number - needed to help build filenames -# -VERS=`cat $srcdir/VERSION` -VERSW=`sed 's/\./_/g' $srcdir/VERSION` -echo "VERSIONS: $VERS $VERSW" - -# Start by building an sqlite shell for linux. -# -make clean -make sqlite3.c -CFLAGS="-Os -DSQLITE_ENABLE_FTS3=1 -DSQLITE_THREADSAFE=0" -NAME=sqlite3-$VERS-osx-x86.bin -echo '***** '"COMPILING $NAME..." -gcc $CFLAGS -Itsrc sqlite3.c tsrc/shell.c -o $NAME -ldl -strip $NAME -chmod 644 $NAME -gzip $NAME -mkdir -p doc -mv $NAME.gz doc diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/spec.template b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/spec.template deleted file mode 100644 index 0709c4ba62..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/spec.template +++ /dev/null @@ -1,67 +0,0 @@ -%define name sqlite -%define version SQLITE_VERSION -%define release 1 - -Name: %{name} -Summary: SQLite is a C library that implements an embeddable SQL database engine -Version: %{version} -Release: %{release} -Source: %{name}-%{version}.tar.gz -Group: System/Libraries -URL: http://www.sqlite.org/ -License: Public Domain -BuildRoot: %{_tmppath}/%{name}-%{version}-root - -%description -SQLite is a software library that implements a self-contained, serverless, -zero-configuration, transactional SQL database engine. -Programs that link with the SQLite library can have SQL database access -without running a separate RDBMS process. The distribution comes with a -standalone command-line access program (sqlite) that can be used to -administer an SQLite database and which serves as an example of how to -use the SQLite library. - -%package -n %{name}-devel -Summary: Header files and libraries for developing apps which will use sqlite -Group: Development/C -Requires: %{name} = %{version}-%{release} - -%description -n %{name}-devel -The sqlite-devel package contains the header files and libraries needed -to develop programs that use the SQLite database library. - -%prep -%setup -q -n %{name} - -%build -CFLAGS="%optflags -DNDEBUG=1" CXXFLAGS="%optflags -DNDEBUG=1" ./configure --prefix=%{_prefix} - -make -make doc - -%install -install -d $RPM_BUILD_ROOT/%{_prefix} -install -d $RPM_BUILD_ROOT/%{_prefix}/bin -install -d $RPM_BUILD_ROOT/%{_prefix}/include -install -d $RPM_BUILD_ROOT/%{_prefix}/lib -make install prefix=$RPM_BUILD_ROOT/%{_prefix} - -%post -p /sbin/ldconfig - -%postun -p /sbin/ldconfig - -%clean -rm -fr $RPM_BUILD_ROOT - -%files -%defattr(-, root, root) -%{_libdir}/*.so* -%{_bindir}/* - -%files -n %{name}-devel -%defattr(-, root, root) -%{_libdir}/pkgconfig/sqlite3.pc -%{_libdir}/*.a -%{_libdir}/*.la -%{_includedir}/* -%doc doc/* diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/sqlite.pc.in b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/sqlite.pc.in deleted file mode 100644 index b002ccb94a..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/sqlite.pc.in +++ /dev/null @@ -1,13 +0,0 @@ -# Package Information for pkg-config - -prefix=@prefix@ -exec_prefix=@exec_prefix@ -libdir=@libdir@ -includedir=@includedir@ - -Name: SQLite -Description: SQL database engine -Version: @RELEASE@ -Libs: -L${libdir} -lsqlite -Libs.private: @LIBS@ -Cflags: -I${includedir} diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/sqlite3.1 b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/sqlite3.1 deleted file mode 100644 index 52cd023cda..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/sqlite3.1 +++ /dev/null @@ -1,229 +0,0 @@ -.\" Hey, EMACS: -*- nroff -*- -.\" First parameter, NAME, should be all caps -.\" Second parameter, SECTION, should be 1-8, maybe w/ subsection -.\" other parameters are allowed: see man(7), man(1) -.TH SQLITE3 1 "Mon Apr 15 23:49:17 2002" -.\" Please adjust this date whenever revising the manpage. -.\" -.\" Some roff macros, for reference: -.\" .nh disable hyphenation -.\" .hy enable hyphenation -.\" .ad l left justify -.\" .ad b justify to both left and right margins -.\" .nf disable filling -.\" .fi enable filling -.\" .br insert line break -.\" .sp insert n+1 empty lines -.\" for manpage-specific macros, see man(7) -.SH NAME -.B sqlite3 -\- A command line interface for SQLite version 3 - -.SH SYNOPSIS -.B sqlite3 -.RI [ options ] -.RI [ databasefile ] -.RI [ SQL ] - -.SH SUMMARY -.PP -.B sqlite3 -is a terminal-based front-end to the SQLite library that can evaluate -queries interactively and display the results in multiple formats. -.B sqlite3 -can also be used within shell scripts and other applications to provide -batch processing features. - -.SH DESCRIPTION -To start a -.B sqlite3 -interactive session, invoke the -.B sqlite3 -command and optionally provide the name of a database file. If the -database file does not exist, it will be created. If the database file -does exist, it will be opened. - -For example, to create a new database file named "mydata.db", create -a table named "memos" and insert a couple of records into that table: -.sp -$ -.B sqlite3 mydata.db -.br -SQLite version 3.1.3 -.br -Enter ".help" for instructions -.br -sqlite> -.B create table memos(text, priority INTEGER); -.br -sqlite> -.B insert into memos values('deliver project description', 10); -.br -sqlite> -.B insert into memos values('lunch with Christine', 100); -.br -sqlite> -.B select * from memos; -.br -deliver project description|10 -.br -lunch with Christine|100 -.br -sqlite> -.sp - -If no database name is supplied, the ATTACH sql command can be used -to attach to existing or create new database files. ATTACH can also -be used to attach to multiple databases within the same interactive -session. This is useful for migrating data between databases, -possibly changing the schema along the way. - -Optionally, a SQL statement or set of SQL statements can be supplied as -a single argument. Multiple statements should be separated by -semi-colons. - -For example: -.sp -$ -.B sqlite3 -line mydata.db 'select * from memos where priority > 20;' -.br - text = lunch with Christine -.br -priority = 100 -.br -.sp - -.SS SQLITE META-COMMANDS -.PP -The interactive interpreter offers a set of meta-commands that can be -used to control the output format, examine the currently attached -database files, or perform administrative operations upon the -attached databases (such as rebuilding indices). Meta-commands are -always prefixed with a dot (.). - -A list of available meta-commands can be viewed at any time by issuing -the '.help' command. For example: -.sp -sqlite> -.B .help -.nf -.cc | -.databases List names and files of attached databases -.dump ?TABLE? ... Dump the database in an SQL text format -.echo ON|OFF Turn command echo on or off -.exit Exit this program -.explain ON|OFF Turn output mode suitable for EXPLAIN on or off. -.header(s) ON|OFF Turn display of headers on or off -.help Show this message -.import FILE TABLE Import data from FILE into TABLE -.indices TABLE Show names of all indices on TABLE -.mode MODE ?TABLE? Set output mode where MODE is one of: - csv Comma-separated values - column Left-aligned columns. (See .width) - html HTML code - insert SQL insert statements for TABLE - line One value per line - list Values delimited by .separator string - tabs Tab-separated values - tcl TCL list elements -.nullvalue STRING Print STRING in place of NULL values -.output FILENAME Send output to FILENAME -.output stdout Send output to the screen -.prompt MAIN CONTINUE Replace the standard prompts -.quit Exit this program -.read FILENAME Execute SQL in FILENAME -.schema ?TABLE? Show the CREATE statements -.separator STRING Change separator used by output mode and .import -.show Show the current values for various settings -.tables ?PATTERN? List names of tables matching a LIKE pattern -.timeout MS Try opening locked tables for MS milliseconds -.width NUM NUM ... Set column widths for "column" mode -sqlite> -|cc . -.sp -.fi - -.SH OPTIONS -.B sqlite3 -has the following options: -.TP -.BI \-init\ file -Read and execute commands from -.I file -, which can contain a mix of SQL statements and meta-commands. -.TP -.B \-echo -Print commands before execution. -.TP -.B \-[no]header -Turn headers on or off. -.TP -.B \-column -Query results will be displayed in a table like form, using -whitespace characters to separate the columns and align the -output. -.TP -.B \-html -Query results will be output as simple HTML tables. -.TP -.B \-line -Query results will be displayed with one value per line, rows -separated by a blank line. Designed to be easily parsed by -scripts or other programs -.TP -.B \-list -Query results will be displayed with the separator (|, by default) -character between each field value. The default. -.TP -.BI \-separator\ separator -Set output field separator. Default is '|'. -.TP -.BI \-nullvalue\ string -Set string used to represent NULL values. Default is '' -(empty string). -.TP -.B \-version -Show SQLite version. -.TP -.B \-help -Show help on options and exit. - - -.SH INIT FILE -.B sqlite3 -reads an initialization file to set the configuration of the -interactive environment. Throughout initialization, any previously -specified setting can be overridden. The sequence of initialization is -as follows: - -o The default configuration is established as follows: - -.sp -.nf -.cc | -mode = LIST -separator = "|" -main prompt = "sqlite> " -continue prompt = " ...> " -|cc . -.sp -.fi - -o If the file -.B ~/.sqliterc -exists, it is processed first. -can be found in the user's home directory, it is -read and processed. It should generally only contain meta-commands. - -o If the -init option is present, the specified file is processed. - -o All other command line options are processed. - -.SH SEE ALSO -http://www.sqlite.org/ -.br -The sqlite-doc package -.SH AUTHOR -This manual page was originally written by Andreas Rottmann -, for the Debian GNU/Linux system (but may be used -by others). It was subsequently revised by Bill Bumgarner . diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/sqlite3.pc.in b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/sqlite3.pc.in deleted file mode 100644 index 4e11167c7d..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/sqlite3.pc.in +++ /dev/null @@ -1,13 +0,0 @@ -# Package Information for pkg-config - -prefix=@prefix@ -exec_prefix=@exec_prefix@ -libdir=@libdir@ -includedir=@includedir@ - -Name: SQLite -Description: SQL database engine -Version: @RELEASE@ -Libs: -L${libdir} -lsqlite3 -Libs.private: @LIBS@ -Cflags: -I${includedir} diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/alter.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/alter.c deleted file mode 100644 index 2592e18829..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/alter.c +++ /dev/null @@ -1,826 +0,0 @@ -/* -** 2005 February 15 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file contains C code routines that used to generate VDBE code -** that implements the ALTER TABLE command. -*/ -#include "sqliteInt.h" - -/* -** The code in this file only exists if we are not omitting the -** ALTER TABLE logic from the build. -*/ -#ifndef SQLITE_OMIT_ALTERTABLE - - -/* -** This function is used by SQL generated to implement the -** ALTER TABLE command. The first argument is the text of a CREATE TABLE or -** CREATE INDEX command. The second is a table name. The table name in -** the CREATE TABLE or CREATE INDEX statement is replaced with the third -** argument and the result returned. Examples: -** -** sqlite_rename_table('CREATE TABLE abc(a, b, c)', 'def') -** -> 'CREATE TABLE def(a, b, c)' -** -** sqlite_rename_table('CREATE INDEX i ON abc(a)', 'def') -** -> 'CREATE INDEX i ON def(a, b, c)' -*/ -static void renameTableFunc( - sqlite3_context *context, - int NotUsed, - sqlite3_value **argv -){ - unsigned char const *zSql = sqlite3_value_text(argv[0]); - unsigned char const *zTableName = sqlite3_value_text(argv[1]); - - int token; - Token tname; - unsigned char const *zCsr = zSql; - int len = 0; - char *zRet; - - sqlite3 *db = sqlite3_context_db_handle(context); - - UNUSED_PARAMETER(NotUsed); - - /* The principle used to locate the table name in the CREATE TABLE - ** statement is that the table name is the first non-space token that - ** is immediately followed by a TK_LP or TK_USING token. - */ - if( zSql ){ - do { - if( !*zCsr ){ - /* Ran out of input before finding an opening bracket. Return NULL. */ - return; - } - - /* Store the token that zCsr points to in tname. */ - tname.z = (char*)zCsr; - tname.n = len; - - /* Advance zCsr to the next token. Store that token type in 'token', - ** and its length in 'len' (to be used next iteration of this loop). - */ - do { - zCsr += len; - len = sqlite3GetToken(zCsr, &token); - } while( token==TK_SPACE ); - assert( len>0 ); - } while( token!=TK_LP && token!=TK_USING ); - - zRet = sqlite3MPrintf(db, "%.*s\"%w\"%s", ((u8*)tname.z) - zSql, zSql, - zTableName, tname.z+tname.n); - sqlite3_result_text(context, zRet, -1, SQLITE_DYNAMIC); - } -} - -/* -** This C function implements an SQL user function that is used by SQL code -** generated by the ALTER TABLE ... RENAME command to modify the definition -** of any foreign key constraints that use the table being renamed as the -** parent table. It is passed three arguments: -** -** 1) The complete text of the CREATE TABLE statement being modified, -** 2) The old name of the table being renamed, and -** 3) The new name of the table being renamed. -** -** It returns the new CREATE TABLE statement. For example: -** -** sqlite_rename_parent('CREATE TABLE t1(a REFERENCES t2)', 't2', 't3') -** -> 'CREATE TABLE t1(a REFERENCES t3)' -*/ -#ifndef SQLITE_OMIT_FOREIGN_KEY -static void renameParentFunc( - sqlite3_context *context, - int NotUsed, - sqlite3_value **argv -){ - sqlite3 *db = sqlite3_context_db_handle(context); - char *zOutput = 0; - char *zResult; - unsigned char const *zInput = sqlite3_value_text(argv[0]); - unsigned char const *zOld = sqlite3_value_text(argv[1]); - unsigned char const *zNew = sqlite3_value_text(argv[2]); - - unsigned const char *z; /* Pointer to token */ - int n; /* Length of token z */ - int token; /* Type of token */ - - UNUSED_PARAMETER(NotUsed); - for(z=zInput; *z; z=z+n){ - n = sqlite3GetToken(z, &token); - if( token==TK_REFERENCES ){ - char *zParent; - do { - z += n; - n = sqlite3GetToken(z, &token); - }while( token==TK_SPACE ); - - zParent = sqlite3DbStrNDup(db, (const char *)z, n); - if( zParent==0 ) break; - sqlite3Dequote(zParent); - if( 0==sqlite3StrICmp((const char *)zOld, zParent) ){ - char *zOut = sqlite3MPrintf(db, "%s%.*s\"%w\"", - (zOutput?zOutput:""), z-zInput, zInput, (const char *)zNew - ); - sqlite3DbFree(db, zOutput); - zOutput = zOut; - zInput = &z[n]; - } - sqlite3DbFree(db, zParent); - } - } - - zResult = sqlite3MPrintf(db, "%s%s", (zOutput?zOutput:""), zInput), - sqlite3_result_text(context, zResult, -1, SQLITE_DYNAMIC); - sqlite3DbFree(db, zOutput); -} -#endif - -#ifndef SQLITE_OMIT_TRIGGER -/* This function is used by SQL generated to implement the -** ALTER TABLE command. The first argument is the text of a CREATE TRIGGER -** statement. The second is a table name. The table name in the CREATE -** TRIGGER statement is replaced with the third argument and the result -** returned. This is analagous to renameTableFunc() above, except for CREATE -** TRIGGER, not CREATE INDEX and CREATE TABLE. -*/ -static void renameTriggerFunc( - sqlite3_context *context, - int NotUsed, - sqlite3_value **argv -){ - unsigned char const *zSql = sqlite3_value_text(argv[0]); - unsigned char const *zTableName = sqlite3_value_text(argv[1]); - - int token; - Token tname; - int dist = 3; - unsigned char const *zCsr = zSql; - int len = 0; - char *zRet; - sqlite3 *db = sqlite3_context_db_handle(context); - - UNUSED_PARAMETER(NotUsed); - - /* The principle used to locate the table name in the CREATE TRIGGER - ** statement is that the table name is the first token that is immediatedly - ** preceded by either TK_ON or TK_DOT and immediatedly followed by one - ** of TK_WHEN, TK_BEGIN or TK_FOR. - */ - if( zSql ){ - do { - - if( !*zCsr ){ - /* Ran out of input before finding the table name. Return NULL. */ - return; - } - - /* Store the token that zCsr points to in tname. */ - tname.z = (char*)zCsr; - tname.n = len; - - /* Advance zCsr to the next token. Store that token type in 'token', - ** and its length in 'len' (to be used next iteration of this loop). - */ - do { - zCsr += len; - len = sqlite3GetToken(zCsr, &token); - }while( token==TK_SPACE ); - assert( len>0 ); - - /* Variable 'dist' stores the number of tokens read since the most - ** recent TK_DOT or TK_ON. This means that when a WHEN, FOR or BEGIN - ** token is read and 'dist' equals 2, the condition stated above - ** to be met. - ** - ** Note that ON cannot be a database, table or column name, so - ** there is no need to worry about syntax like - ** "CREATE TRIGGER ... ON ON.ON BEGIN ..." etc. - */ - dist++; - if( token==TK_DOT || token==TK_ON ){ - dist = 0; - } - } while( dist!=2 || (token!=TK_WHEN && token!=TK_FOR && token!=TK_BEGIN) ); - - /* Variable tname now contains the token that is the old table-name - ** in the CREATE TRIGGER statement. - */ - zRet = sqlite3MPrintf(db, "%.*s\"%w\"%s", ((u8*)tname.z) - zSql, zSql, - zTableName, tname.z+tname.n); - sqlite3_result_text(context, zRet, -1, SQLITE_DYNAMIC); - } -} -#endif /* !SQLITE_OMIT_TRIGGER */ - -/* -** Register built-in functions used to help implement ALTER TABLE -*/ -void sqlite3AlterFunctions(void){ - static SQLITE_WSD FuncDef aAlterTableFuncs[] = { - FUNCTION(sqlite_rename_table, 2, 0, 0, renameTableFunc), -#ifndef SQLITE_OMIT_TRIGGER - FUNCTION(sqlite_rename_trigger, 2, 0, 0, renameTriggerFunc), -#endif -#ifndef SQLITE_OMIT_FOREIGN_KEY - FUNCTION(sqlite_rename_parent, 3, 0, 0, renameParentFunc), -#endif - }; - int i; - FuncDefHash *pHash = &GLOBAL(FuncDefHash, sqlite3GlobalFunctions); - FuncDef *aFunc = (FuncDef*)&GLOBAL(FuncDef, aAlterTableFuncs); - - for(i=0; i OR name= OR ... -** -** If argument zWhere is NULL, then a pointer string containing the text -** "name=" is returned, where is the quoted version -** of the string passed as argument zConstant. The returned buffer is -** allocated using sqlite3DbMalloc(). It is the responsibility of the -** caller to ensure that it is eventually freed. -** -** If argument zWhere is not NULL, then the string returned is -** " OR name=", where is the contents of zWhere. -** In this case zWhere is passed to sqlite3DbFree() before returning. -** -*/ -static char *whereOrName(sqlite3 *db, char *zWhere, char *zConstant){ - char *zNew; - if( !zWhere ){ - zNew = sqlite3MPrintf(db, "name=%Q", zConstant); - }else{ - zNew = sqlite3MPrintf(db, "%s OR name=%Q", zWhere, zConstant); - sqlite3DbFree(db, zWhere); - } - return zNew; -} - -#if !defined(SQLITE_OMIT_FOREIGN_KEY) && !defined(SQLITE_OMIT_TRIGGER) -/* -** Generate the text of a WHERE expression which can be used to select all -** tables that have foreign key constraints that refer to table pTab (i.e. -** constraints for which pTab is the parent table) from the sqlite_master -** table. -*/ -static char *whereForeignKeys(Parse *pParse, Table *pTab){ - FKey *p; - char *zWhere = 0; - for(p=sqlite3FkReferences(pTab); p; p=p->pNextTo){ - zWhere = whereOrName(pParse->db, zWhere, p->pFrom->zName); - } - return zWhere; -} -#endif - -/* -** Generate the text of a WHERE expression which can be used to select all -** temporary triggers on table pTab from the sqlite_temp_master table. If -** table pTab has no temporary triggers, or is itself stored in the -** temporary database, NULL is returned. -*/ -static char *whereTempTriggers(Parse *pParse, Table *pTab){ - Trigger *pTrig; - char *zWhere = 0; - const Schema *pTempSchema = pParse->db->aDb[1].pSchema; /* Temp db schema */ - - /* If the table is not located in the temp-db (in which case NULL is - ** returned, loop through the tables list of triggers. For each trigger - ** that is not part of the temp-db schema, add a clause to the WHERE - ** expression being built up in zWhere. - */ - if( pTab->pSchema!=pTempSchema ){ - sqlite3 *db = pParse->db; - for(pTrig=sqlite3TriggerList(pParse, pTab); pTrig; pTrig=pTrig->pNext){ - if( pTrig->pSchema==pTempSchema ){ - zWhere = whereOrName(db, zWhere, pTrig->zName); - } - } - } - if( zWhere ){ - char *zNew = sqlite3MPrintf(pParse->db, "type='trigger' AND (%s)", zWhere); - sqlite3DbFree(pParse->db, zWhere); - zWhere = zNew; - } - return zWhere; -} - -/* -** Generate code to drop and reload the internal representation of table -** pTab from the database, including triggers and temporary triggers. -** Argument zName is the name of the table in the database schema at -** the time the generated code is executed. This can be different from -** pTab->zName if this function is being called to code part of an -** "ALTER TABLE RENAME TO" statement. -*/ -static void reloadTableSchema(Parse *pParse, Table *pTab, const char *zName){ - Vdbe *v; - char *zWhere; - int iDb; /* Index of database containing pTab */ -#ifndef SQLITE_OMIT_TRIGGER - Trigger *pTrig; -#endif - - v = sqlite3GetVdbe(pParse); - if( NEVER(v==0) ) return; - assert( sqlite3BtreeHoldsAllMutexes(pParse->db) ); - iDb = sqlite3SchemaToIndex(pParse->db, pTab->pSchema); - assert( iDb>=0 ); - -#ifndef SQLITE_OMIT_TRIGGER - /* Drop any table triggers from the internal schema. */ - for(pTrig=sqlite3TriggerList(pParse, pTab); pTrig; pTrig=pTrig->pNext){ - int iTrigDb = sqlite3SchemaToIndex(pParse->db, pTrig->pSchema); - assert( iTrigDb==iDb || iTrigDb==1 ); - sqlite3VdbeAddOp4(v, OP_DropTrigger, iTrigDb, 0, 0, pTrig->zName, 0); - } -#endif - - /* Drop the table and index from the internal schema. */ - sqlite3VdbeAddOp4(v, OP_DropTable, iDb, 0, 0, pTab->zName, 0); - - /* Reload the table, index and permanent trigger schemas. */ - zWhere = sqlite3MPrintf(pParse->db, "tbl_name=%Q", zName); - if( !zWhere ) return; - sqlite3VdbeAddParseSchemaOp(v, iDb, zWhere); - -#ifndef SQLITE_OMIT_TRIGGER - /* Now, if the table is not stored in the temp database, reload any temp - ** triggers. Don't use IN(...) in case SQLITE_OMIT_SUBQUERY is defined. - */ - if( (zWhere=whereTempTriggers(pParse, pTab))!=0 ){ - sqlite3VdbeAddParseSchemaOp(v, 1, zWhere); - } -#endif -} - -/* -** Parameter zName is the name of a table that is about to be altered -** (either with ALTER TABLE ... RENAME TO or ALTER TABLE ... ADD COLUMN). -** If the table is a system table, this function leaves an error message -** in pParse->zErr (system tables may not be altered) and returns non-zero. -** -** Or, if zName is not a system table, zero is returned. -*/ -static int isSystemTable(Parse *pParse, const char *zName){ - if( sqlite3Strlen30(zName)>6 && 0==sqlite3StrNICmp(zName, "sqlite_", 7) ){ - sqlite3ErrorMsg(pParse, "table %s may not be altered", zName); - return 1; - } - return 0; -} - -/* -** Generate code to implement the "ALTER TABLE xxx RENAME TO yyy" -** command. -*/ -void sqlite3AlterRenameTable( - Parse *pParse, /* Parser context. */ - SrcList *pSrc, /* The table to rename. */ - Token *pName /* The new table name. */ -){ - int iDb; /* Database that contains the table */ - char *zDb; /* Name of database iDb */ - Table *pTab; /* Table being renamed */ - char *zName = 0; /* NULL-terminated version of pName */ - sqlite3 *db = pParse->db; /* Database connection */ - int nTabName; /* Number of UTF-8 characters in zTabName */ - const char *zTabName; /* Original name of the table */ - Vdbe *v; -#ifndef SQLITE_OMIT_TRIGGER - char *zWhere = 0; /* Where clause to locate temp triggers */ -#endif - VTable *pVTab = 0; /* Non-zero if this is a v-tab with an xRename() */ - int savedDbFlags; /* Saved value of db->flags */ - - savedDbFlags = db->flags; - if( NEVER(db->mallocFailed) ) goto exit_rename_table; - assert( pSrc->nSrc==1 ); - assert( sqlite3BtreeHoldsAllMutexes(pParse->db) ); - - pTab = sqlite3LocateTable(pParse, 0, pSrc->a[0].zName, pSrc->a[0].zDatabase); - if( !pTab ) goto exit_rename_table; - iDb = sqlite3SchemaToIndex(pParse->db, pTab->pSchema); - zDb = db->aDb[iDb].zName; - db->flags |= SQLITE_PreferBuiltin; - - /* Get a NULL terminated version of the new table name. */ - zName = sqlite3NameFromToken(db, pName); - if( !zName ) goto exit_rename_table; - - /* Check that a table or index named 'zName' does not already exist - ** in database iDb. If so, this is an error. - */ - if( sqlite3FindTable(db, zName, zDb) || sqlite3FindIndex(db, zName, zDb) ){ - sqlite3ErrorMsg(pParse, - "there is already another table or index with this name: %s", zName); - goto exit_rename_table; - } - - /* Make sure it is not a system table being altered, or a reserved name - ** that the table is being renamed to. - */ - if( SQLITE_OK!=isSystemTable(pParse, pTab->zName) ){ - goto exit_rename_table; - } - if( SQLITE_OK!=sqlite3CheckObjectName(pParse, zName) ){ goto - exit_rename_table; - } - -#ifndef SQLITE_OMIT_VIEW - if( pTab->pSelect ){ - sqlite3ErrorMsg(pParse, "view %s may not be altered", pTab->zName); - goto exit_rename_table; - } -#endif - -#ifndef SQLITE_OMIT_AUTHORIZATION - /* Invoke the authorization callback. */ - if( sqlite3AuthCheck(pParse, SQLITE_ALTER_TABLE, zDb, pTab->zName, 0) ){ - goto exit_rename_table; - } -#endif - -#ifndef SQLITE_OMIT_VIRTUALTABLE - if( sqlite3ViewGetColumnNames(pParse, pTab) ){ - goto exit_rename_table; - } - if( IsVirtual(pTab) ){ - pVTab = sqlite3GetVTable(db, pTab); - if( pVTab->pVtab->pModule->xRename==0 ){ - pVTab = 0; - } - } -#endif - - /* Begin a transaction and code the VerifyCookie for database iDb. - ** Then modify the schema cookie (since the ALTER TABLE modifies the - ** schema). Open a statement transaction if the table is a virtual - ** table. - */ - v = sqlite3GetVdbe(pParse); - if( v==0 ){ - goto exit_rename_table; - } - sqlite3BeginWriteOperation(pParse, pVTab!=0, iDb); - sqlite3ChangeCookie(pParse, iDb); - - /* If this is a virtual table, invoke the xRename() function if - ** one is defined. The xRename() callback will modify the names - ** of any resources used by the v-table implementation (including other - ** SQLite tables) that are identified by the name of the virtual table. - */ -#ifndef SQLITE_OMIT_VIRTUALTABLE - if( pVTab ){ - int i = ++pParse->nMem; - sqlite3VdbeAddOp4(v, OP_String8, 0, i, 0, zName, 0); - sqlite3VdbeAddOp4(v, OP_VRename, i, 0, 0,(const char*)pVTab, P4_VTAB); - sqlite3MayAbort(pParse); - } -#endif - - /* figure out how many UTF-8 characters are in zName */ - zTabName = pTab->zName; - nTabName = sqlite3Utf8CharLen(zTabName, -1); - -#if !defined(SQLITE_OMIT_FOREIGN_KEY) && !defined(SQLITE_OMIT_TRIGGER) - if( db->flags&SQLITE_ForeignKeys ){ - /* If foreign-key support is enabled, rewrite the CREATE TABLE - ** statements corresponding to all child tables of foreign key constraints - ** for which the renamed table is the parent table. */ - if( (zWhere=whereForeignKeys(pParse, pTab))!=0 ){ - sqlite3NestedParse(pParse, - "UPDATE \"%w\".%s SET " - "sql = sqlite_rename_parent(sql, %Q, %Q) " - "WHERE %s;", zDb, SCHEMA_TABLE(iDb), zTabName, zName, zWhere); - sqlite3DbFree(db, zWhere); - } - } -#endif - - /* Modify the sqlite_master table to use the new table name. */ - sqlite3NestedParse(pParse, - "UPDATE %Q.%s SET " -#ifdef SQLITE_OMIT_TRIGGER - "sql = sqlite_rename_table(sql, %Q), " -#else - "sql = CASE " - "WHEN type = 'trigger' THEN sqlite_rename_trigger(sql, %Q)" - "ELSE sqlite_rename_table(sql, %Q) END, " -#endif - "tbl_name = %Q, " - "name = CASE " - "WHEN type='table' THEN %Q " - "WHEN name LIKE 'sqlite_autoindex%%' AND type='index' THEN " - "'sqlite_autoindex_' || %Q || substr(name,%d+18) " - "ELSE name END " - "WHERE tbl_name=%Q AND " - "(type='table' OR type='index' OR type='trigger');", - zDb, SCHEMA_TABLE(iDb), zName, zName, zName, -#ifndef SQLITE_OMIT_TRIGGER - zName, -#endif - zName, nTabName, zTabName - ); - -#ifndef SQLITE_OMIT_AUTOINCREMENT - /* If the sqlite_sequence table exists in this database, then update - ** it with the new table name. - */ - if( sqlite3FindTable(db, "sqlite_sequence", zDb) ){ - sqlite3NestedParse(pParse, - "UPDATE \"%w\".sqlite_sequence set name = %Q WHERE name = %Q", - zDb, zName, pTab->zName); - } -#endif - -#ifndef SQLITE_OMIT_TRIGGER - /* If there are TEMP triggers on this table, modify the sqlite_temp_master - ** table. Don't do this if the table being ALTERed is itself located in - ** the temp database. - */ - if( (zWhere=whereTempTriggers(pParse, pTab))!=0 ){ - sqlite3NestedParse(pParse, - "UPDATE sqlite_temp_master SET " - "sql = sqlite_rename_trigger(sql, %Q), " - "tbl_name = %Q " - "WHERE %s;", zName, zName, zWhere); - sqlite3DbFree(db, zWhere); - } -#endif - -#if !defined(SQLITE_OMIT_FOREIGN_KEY) && !defined(SQLITE_OMIT_TRIGGER) - if( db->flags&SQLITE_ForeignKeys ){ - FKey *p; - for(p=sqlite3FkReferences(pTab); p; p=p->pNextTo){ - Table *pFrom = p->pFrom; - if( pFrom!=pTab ){ - reloadTableSchema(pParse, p->pFrom, pFrom->zName); - } - } - } -#endif - - /* Drop and reload the internal table schema. */ - reloadTableSchema(pParse, pTab, zName); - -exit_rename_table: - sqlite3SrcListDelete(db, pSrc); - sqlite3DbFree(db, zName); - db->flags = savedDbFlags; -} - - -/* -** Generate code to make sure the file format number is at least minFormat. -** The generated code will increase the file format number if necessary. -*/ -void sqlite3MinimumFileFormat(Parse *pParse, int iDb, int minFormat){ - Vdbe *v; - v = sqlite3GetVdbe(pParse); - /* The VDBE should have been allocated before this routine is called. - ** If that allocation failed, we would have quit before reaching this - ** point */ - if( ALWAYS(v) ){ - int r1 = sqlite3GetTempReg(pParse); - int r2 = sqlite3GetTempReg(pParse); - int j1; - sqlite3VdbeAddOp3(v, OP_ReadCookie, iDb, r1, BTREE_FILE_FORMAT); - sqlite3VdbeUsesBtree(v, iDb); - sqlite3VdbeAddOp2(v, OP_Integer, minFormat, r2); - j1 = sqlite3VdbeAddOp3(v, OP_Ge, r2, 0, r1); - sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_FILE_FORMAT, r2); - sqlite3VdbeJumpHere(v, j1); - sqlite3ReleaseTempReg(pParse, r1); - sqlite3ReleaseTempReg(pParse, r2); - } -} - -/* -** This function is called after an "ALTER TABLE ... ADD" statement -** has been parsed. Argument pColDef contains the text of the new -** column definition. -** -** The Table structure pParse->pNewTable was extended to include -** the new column during parsing. -*/ -void sqlite3AlterFinishAddColumn(Parse *pParse, Token *pColDef){ - Table *pNew; /* Copy of pParse->pNewTable */ - Table *pTab; /* Table being altered */ - int iDb; /* Database number */ - const char *zDb; /* Database name */ - const char *zTab; /* Table name */ - char *zCol; /* Null-terminated column definition */ - Column *pCol; /* The new column */ - Expr *pDflt; /* Default value for the new column */ - sqlite3 *db; /* The database connection; */ - - db = pParse->db; - if( pParse->nErr || db->mallocFailed ) return; - pNew = pParse->pNewTable; - assert( pNew ); - - assert( sqlite3BtreeHoldsAllMutexes(db) ); - iDb = sqlite3SchemaToIndex(db, pNew->pSchema); - zDb = db->aDb[iDb].zName; - zTab = &pNew->zName[16]; /* Skip the "sqlite_altertab_" prefix on the name */ - pCol = &pNew->aCol[pNew->nCol-1]; - pDflt = pCol->pDflt; - pTab = sqlite3FindTable(db, zTab, zDb); - assert( pTab ); - -#ifndef SQLITE_OMIT_AUTHORIZATION - /* Invoke the authorization callback. */ - if( sqlite3AuthCheck(pParse, SQLITE_ALTER_TABLE, zDb, pTab->zName, 0) ){ - return; - } -#endif - - /* If the default value for the new column was specified with a - ** literal NULL, then set pDflt to 0. This simplifies checking - ** for an SQL NULL default below. - */ - if( pDflt && pDflt->op==TK_NULL ){ - pDflt = 0; - } - - /* Check that the new column is not specified as PRIMARY KEY or UNIQUE. - ** If there is a NOT NULL constraint, then the default value for the - ** column must not be NULL. - */ - if( pCol->isPrimKey ){ - sqlite3ErrorMsg(pParse, "Cannot add a PRIMARY KEY column"); - return; - } - if( pNew->pIndex ){ - sqlite3ErrorMsg(pParse, "Cannot add a UNIQUE column"); - return; - } - if( (db->flags&SQLITE_ForeignKeys) && pNew->pFKey && pDflt ){ - sqlite3ErrorMsg(pParse, - "Cannot add a REFERENCES column with non-NULL default value"); - return; - } - if( pCol->notNull && !pDflt ){ - sqlite3ErrorMsg(pParse, - "Cannot add a NOT NULL column with default value NULL"); - return; - } - - /* Ensure the default expression is something that sqlite3ValueFromExpr() - ** can handle (i.e. not CURRENT_TIME etc.) - */ - if( pDflt ){ - sqlite3_value *pVal; - if( sqlite3ValueFromExpr(db, pDflt, SQLITE_UTF8, SQLITE_AFF_NONE, &pVal) ){ - db->mallocFailed = 1; - return; - } - if( !pVal ){ - sqlite3ErrorMsg(pParse, "Cannot add a column with non-constant default"); - return; - } - sqlite3ValueFree(pVal); - } - - /* Modify the CREATE TABLE statement. */ - zCol = sqlite3DbStrNDup(db, (char*)pColDef->z, pColDef->n); - if( zCol ){ - char *zEnd = &zCol[pColDef->n-1]; - int savedDbFlags = db->flags; - while( zEnd>zCol && (*zEnd==';' || sqlite3Isspace(*zEnd)) ){ - *zEnd-- = '\0'; - } - db->flags |= SQLITE_PreferBuiltin; - sqlite3NestedParse(pParse, - "UPDATE \"%w\".%s SET " - "sql = substr(sql,1,%d) || ', ' || %Q || substr(sql,%d) " - "WHERE type = 'table' AND name = %Q", - zDb, SCHEMA_TABLE(iDb), pNew->addColOffset, zCol, pNew->addColOffset+1, - zTab - ); - sqlite3DbFree(db, zCol); - db->flags = savedDbFlags; - } - - /* If the default value of the new column is NULL, then set the file - ** format to 2. If the default value of the new column is not NULL, - ** the file format becomes 3. - */ - sqlite3MinimumFileFormat(pParse, iDb, pDflt ? 3 : 2); - - /* Reload the schema of the modified table. */ - reloadTableSchema(pParse, pTab, pTab->zName); -} - -/* -** This function is called by the parser after the table-name in -** an "ALTER TABLE ADD" statement is parsed. Argument -** pSrc is the full-name of the table being altered. -** -** This routine makes a (partial) copy of the Table structure -** for the table being altered and sets Parse.pNewTable to point -** to it. Routines called by the parser as the column definition -** is parsed (i.e. sqlite3AddColumn()) add the new Column data to -** the copy. The copy of the Table structure is deleted by tokenize.c -** after parsing is finished. -** -** Routine sqlite3AlterFinishAddColumn() will be called to complete -** coding the "ALTER TABLE ... ADD" statement. -*/ -void sqlite3AlterBeginAddColumn(Parse *pParse, SrcList *pSrc){ - Table *pNew; - Table *pTab; - Vdbe *v; - int iDb; - int i; - int nAlloc; - sqlite3 *db = pParse->db; - - /* Look up the table being altered. */ - assert( pParse->pNewTable==0 ); - assert( sqlite3BtreeHoldsAllMutexes(db) ); - if( db->mallocFailed ) goto exit_begin_add_column; - pTab = sqlite3LocateTable(pParse, 0, pSrc->a[0].zName, pSrc->a[0].zDatabase); - if( !pTab ) goto exit_begin_add_column; - -#ifndef SQLITE_OMIT_VIRTUALTABLE - if( IsVirtual(pTab) ){ - sqlite3ErrorMsg(pParse, "virtual tables may not be altered"); - goto exit_begin_add_column; - } -#endif - - /* Make sure this is not an attempt to ALTER a view. */ - if( pTab->pSelect ){ - sqlite3ErrorMsg(pParse, "Cannot add a column to a view"); - goto exit_begin_add_column; - } - if( SQLITE_OK!=isSystemTable(pParse, pTab->zName) ){ - goto exit_begin_add_column; - } - - assert( pTab->addColOffset>0 ); - iDb = sqlite3SchemaToIndex(db, pTab->pSchema); - - /* Put a copy of the Table struct in Parse.pNewTable for the - ** sqlite3AddColumn() function and friends to modify. But modify - ** the name by adding an "sqlite_altertab_" prefix. By adding this - ** prefix, we insure that the name will not collide with an existing - ** table because user table are not allowed to have the "sqlite_" - ** prefix on their name. - */ - pNew = (Table*)sqlite3DbMallocZero(db, sizeof(Table)); - if( !pNew ) goto exit_begin_add_column; - pParse->pNewTable = pNew; - pNew->nRef = 1; - pNew->nCol = pTab->nCol; - assert( pNew->nCol>0 ); - nAlloc = (((pNew->nCol-1)/8)*8)+8; - assert( nAlloc>=pNew->nCol && nAlloc%8==0 && nAlloc-pNew->nCol<8 ); - pNew->aCol = (Column*)sqlite3DbMallocZero(db, sizeof(Column)*nAlloc); - pNew->zName = sqlite3MPrintf(db, "sqlite_altertab_%s", pTab->zName); - if( !pNew->aCol || !pNew->zName ){ - db->mallocFailed = 1; - goto exit_begin_add_column; - } - memcpy(pNew->aCol, pTab->aCol, sizeof(Column)*pNew->nCol); - for(i=0; inCol; i++){ - Column *pCol = &pNew->aCol[i]; - pCol->zName = sqlite3DbStrDup(db, pCol->zName); - pCol->zColl = 0; - pCol->zType = 0; - pCol->pDflt = 0; - pCol->zDflt = 0; - } - pNew->pSchema = db->aDb[iDb].pSchema; - pNew->addColOffset = pTab->addColOffset; - pNew->nRef = 1; - - /* Begin a transaction and increment the schema cookie. */ - sqlite3BeginWriteOperation(pParse, 0, iDb); - v = sqlite3GetVdbe(pParse); - if( !v ) goto exit_begin_add_column; - sqlite3ChangeCookie(pParse, iDb); - -exit_begin_add_column: - sqlite3SrcListDelete(db, pSrc); - return; -} -#endif /* SQLITE_ALTER_TABLE */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/analyze.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/analyze.c deleted file mode 100644 index 502098d7d9..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/analyze.c +++ /dev/null @@ -1,1120 +0,0 @@ -/* -** 2005 July 8 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file contains code associated with the ANALYZE command. -** -** The ANALYZE command gather statistics about the content of tables -** and indices. These statistics are made available to the query planner -** to help it make better decisions about how to perform queries. -** -** The following system tables are or have been supported: -** -** CREATE TABLE sqlite_stat1(tbl, idx, stat); -** CREATE TABLE sqlite_stat2(tbl, idx, sampleno, sample); -** CREATE TABLE sqlite_stat3(tbl, idx, nEq, nLt, nDLt, sample); -** -** Additional tables might be added in future releases of SQLite. -** The sqlite_stat2 table is not created or used unless the SQLite version -** is between 3.6.18 and 3.7.8, inclusive, and unless SQLite is compiled -** with SQLITE_ENABLE_STAT2. The sqlite_stat2 table is deprecated. -** The sqlite_stat2 table is superceded by sqlite_stat3, which is only -** created and used by SQLite versions 3.7.9 and later and with -** SQLITE_ENABLE_STAT3 defined. The fucntionality of sqlite_stat3 -** is a superset of sqlite_stat2. -** -** Format of sqlite_stat1: -** -** There is normally one row per index, with the index identified by the -** name in the idx column. The tbl column is the name of the table to -** which the index belongs. In each such row, the stat column will be -** a string consisting of a list of integers. The first integer in this -** list is the number of rows in the index and in the table. The second -** integer is the average number of rows in the index that have the same -** value in the first column of the index. The third integer is the average -** number of rows in the index that have the same value for the first two -** columns. The N-th integer (for N>1) is the average number of rows in -** the index which have the same value for the first N-1 columns. For -** a K-column index, there will be K+1 integers in the stat column. If -** the index is unique, then the last integer will be 1. -** -** The list of integers in the stat column can optionally be followed -** by the keyword "unordered". The "unordered" keyword, if it is present, -** must be separated from the last integer by a single space. If the -** "unordered" keyword is present, then the query planner assumes that -** the index is unordered and will not use the index for a range query. -** -** If the sqlite_stat1.idx column is NULL, then the sqlite_stat1.stat -** column contains a single integer which is the (estimated) number of -** rows in the table identified by sqlite_stat1.tbl. -** -** Format of sqlite_stat2: -** -** The sqlite_stat2 is only created and is only used if SQLite is compiled -** with SQLITE_ENABLE_STAT2 and if the SQLite version number is between -** 3.6.18 and 3.7.8. The "stat2" table contains additional information -** about the distribution of keys within an index. The index is identified by -** the "idx" column and the "tbl" column is the name of the table to which -** the index belongs. There are usually 10 rows in the sqlite_stat2 -** table for each index. -** -** The sqlite_stat2 entries for an index that have sampleno between 0 and 9 -** inclusive are samples of the left-most key value in the index taken at -** evenly spaced points along the index. Let the number of samples be S -** (10 in the standard build) and let C be the number of rows in the index. -** Then the sampled rows are given by: -** -** rownumber = (i*C*2 + C)/(S*2) -** -** For i between 0 and S-1. Conceptually, the index space is divided into -** S uniform buckets and the samples are the middle row from each bucket. -** -** The format for sqlite_stat2 is recorded here for legacy reference. This -** version of SQLite does not support sqlite_stat2. It neither reads nor -** writes the sqlite_stat2 table. This version of SQLite only supports -** sqlite_stat3. -** -** Format for sqlite_stat3: -** -** The sqlite_stat3 is an enhancement to sqlite_stat2. A new name is -** used to avoid compatibility problems. -** -** The format of the sqlite_stat3 table is similar to the format of -** the sqlite_stat2 table. There are multiple entries for each index. -** The idx column names the index and the tbl column is the table of the -** index. If the idx and tbl columns are the same, then the sample is -** of the INTEGER PRIMARY KEY. The sample column is a value taken from -** the left-most column of the index. The nEq column is the approximate -** number of entires in the index whose left-most column exactly matches -** the sample. nLt is the approximate number of entires whose left-most -** column is less than the sample. The nDLt column is the approximate -** number of distinct left-most entries in the index that are less than -** the sample. -** -** Future versions of SQLite might change to store a string containing -** multiple integers values in the nDLt column of sqlite_stat3. The first -** integer will be the number of prior index entires that are distinct in -** the left-most column. The second integer will be the number of prior index -** entries that are distinct in the first two columns. The third integer -** will be the number of prior index entries that are distinct in the first -** three columns. And so forth. With that extension, the nDLt field is -** similar in function to the sqlite_stat1.stat field. -** -** There can be an arbitrary number of sqlite_stat3 entries per index. -** The ANALYZE command will typically generate sqlite_stat3 tables -** that contain between 10 and 40 samples which are distributed across -** the key space, though not uniformly, and which include samples with -** largest possible nEq values. -*/ -#ifndef SQLITE_OMIT_ANALYZE -#include "sqliteInt.h" - -/* -** This routine generates code that opens the sqlite_stat1 table for -** writing with cursor iStatCur. If the library was built with the -** SQLITE_ENABLE_STAT3 macro defined, then the sqlite_stat3 table is -** opened for writing using cursor (iStatCur+1) -** -** If the sqlite_stat1 tables does not previously exist, it is created. -** Similarly, if the sqlite_stat3 table does not exist and the library -** is compiled with SQLITE_ENABLE_STAT3 defined, it is created. -** -** Argument zWhere may be a pointer to a buffer containing a table name, -** or it may be a NULL pointer. If it is not NULL, then all entries in -** the sqlite_stat1 and (if applicable) sqlite_stat3 tables associated -** with the named table are deleted. If zWhere==0, then code is generated -** to delete all stat table entries. -*/ -static void openStatTable( - Parse *pParse, /* Parsing context */ - int iDb, /* The database we are looking in */ - int iStatCur, /* Open the sqlite_stat1 table on this cursor */ - const char *zWhere, /* Delete entries for this table or index */ - const char *zWhereType /* Either "tbl" or "idx" */ -){ - static const struct { - const char *zName; - const char *zCols; - } aTable[] = { - { "sqlite_stat1", "tbl,idx,stat" }, -#ifdef SQLITE_ENABLE_STAT3 - { "sqlite_stat3", "tbl,idx,neq,nlt,ndlt,sample" }, -#endif - }; - - int aRoot[] = {0, 0}; - u8 aCreateTbl[] = {0, 0}; - - int i; - sqlite3 *db = pParse->db; - Db *pDb; - Vdbe *v = sqlite3GetVdbe(pParse); - if( v==0 ) return; - assert( sqlite3BtreeHoldsAllMutexes(db) ); - assert( sqlite3VdbeDb(v)==db ); - pDb = &db->aDb[iDb]; - - /* Create new statistic tables if they do not exist, or clear them - ** if they do already exist. - */ - for(i=0; izName))==0 ){ - /* The sqlite_stat[12] table does not exist. Create it. Note that a - ** side-effect of the CREATE TABLE statement is to leave the rootpage - ** of the new table in register pParse->regRoot. This is important - ** because the OpenWrite opcode below will be needing it. */ - sqlite3NestedParse(pParse, - "CREATE TABLE %Q.%s(%s)", pDb->zName, zTab, aTable[i].zCols - ); - aRoot[i] = pParse->regRoot; - aCreateTbl[i] = 1; - }else{ - /* The table already exists. If zWhere is not NULL, delete all entries - ** associated with the table zWhere. If zWhere is NULL, delete the - ** entire contents of the table. */ - aRoot[i] = pStat->tnum; - sqlite3TableLock(pParse, iDb, aRoot[i], 1, zTab); - if( zWhere ){ - sqlite3NestedParse(pParse, - "DELETE FROM %Q.%s WHERE %s=%Q", pDb->zName, zTab, zWhereType, zWhere - ); - }else{ - /* The sqlite_stat[12] table already exists. Delete all rows. */ - sqlite3VdbeAddOp2(v, OP_Clear, aRoot[i], iDb); - } - } - } - - /* Open the sqlite_stat[13] tables for writing. */ - for(i=0; ia[0])*mxSample; - p = sqlite3_malloc( n ); - if( p==0 ){ - sqlite3_result_error_nomem(context); - return; - } - memset(p, 0, n); - p->a = (struct Stat3Sample*)&p[1]; - p->nRow = nRow; - p->mxSample = mxSample; - p->nPSample = p->nRow/(mxSample/3+1) + 1; - sqlite3_randomness(sizeof(p->iPrn), &p->iPrn); - sqlite3_result_blob(context, p, sizeof(p), sqlite3_free); -} -static const FuncDef stat3InitFuncdef = { - 2, /* nArg */ - SQLITE_UTF8, /* iPrefEnc */ - 0, /* flags */ - 0, /* pUserData */ - 0, /* pNext */ - stat3Init, /* xFunc */ - 0, /* xStep */ - 0, /* xFinalize */ - "stat3_init", /* zName */ - 0, /* pHash */ - 0 /* pDestructor */ -}; - - -/* -** Implementation of the stat3_push(nEq,nLt,nDLt,rowid,P) SQL function. The -** arguments describe a single key instance. This routine makes the -** decision about whether or not to retain this key for the sqlite_stat3 -** table. -** -** The return value is NULL. -*/ -static void stat3Push( - sqlite3_context *context, - int argc, - sqlite3_value **argv -){ - Stat3Accum *p = (Stat3Accum*)sqlite3_value_blob(argv[4]); - tRowcnt nEq = sqlite3_value_int64(argv[0]); - tRowcnt nLt = sqlite3_value_int64(argv[1]); - tRowcnt nDLt = sqlite3_value_int64(argv[2]); - i64 rowid = sqlite3_value_int64(argv[3]); - u8 isPSample = 0; - u8 doInsert = 0; - int iMin = p->iMin; - struct Stat3Sample *pSample; - int i; - u32 h; - - UNUSED_PARAMETER(context); - UNUSED_PARAMETER(argc); - if( nEq==0 ) return; - h = p->iPrn = p->iPrn*1103515245 + 12345; - if( (nLt/p->nPSample)!=((nEq+nLt)/p->nPSample) ){ - doInsert = isPSample = 1; - }else if( p->nSamplemxSample ){ - doInsert = 1; - }else{ - if( nEq>p->a[iMin].nEq || (nEq==p->a[iMin].nEq && h>p->a[iMin].iHash) ){ - doInsert = 1; - } - } - if( !doInsert ) return; - if( p->nSample==p->mxSample ){ - assert( p->nSample - iMin - 1 >= 0 ); - memmove(&p->a[iMin], &p->a[iMin+1], sizeof(p->a[0])*(p->nSample-iMin-1)); - pSample = &p->a[p->nSample-1]; - }else{ - pSample = &p->a[p->nSample++]; - } - pSample->iRowid = rowid; - pSample->nEq = nEq; - pSample->nLt = nLt; - pSample->nDLt = nDLt; - pSample->iHash = h; - pSample->isPSample = isPSample; - - /* Find the new minimum */ - if( p->nSample==p->mxSample ){ - pSample = p->a; - i = 0; - while( pSample->isPSample ){ - i++; - pSample++; - assert( inSample ); - } - nEq = pSample->nEq; - h = pSample->iHash; - iMin = i; - for(i++, pSample++; inSample; i++, pSample++){ - if( pSample->isPSample ) continue; - if( pSample->nEqnEq==nEq && pSample->iHashnEq; - h = pSample->iHash; - } - } - p->iMin = iMin; - } -} -static const FuncDef stat3PushFuncdef = { - 5, /* nArg */ - SQLITE_UTF8, /* iPrefEnc */ - 0, /* flags */ - 0, /* pUserData */ - 0, /* pNext */ - stat3Push, /* xFunc */ - 0, /* xStep */ - 0, /* xFinalize */ - "stat3_push", /* zName */ - 0, /* pHash */ - 0 /* pDestructor */ -}; - -/* -** Implementation of the stat3_get(P,N,...) SQL function. This routine is -** used to query the results. Content is returned for the Nth sqlite_stat3 -** row where N is between 0 and S-1 and S is the number of samples. The -** value returned depends on the number of arguments. -** -** argc==2 result: rowid -** argc==3 result: nEq -** argc==4 result: nLt -** argc==5 result: nDLt -*/ -static void stat3Get( - sqlite3_context *context, - int argc, - sqlite3_value **argv -){ - int n = sqlite3_value_int(argv[1]); - Stat3Accum *p = (Stat3Accum*)sqlite3_value_blob(argv[0]); - - assert( p!=0 ); - if( p->nSample<=n ) return; - switch( argc ){ - case 2: sqlite3_result_int64(context, p->a[n].iRowid); break; - case 3: sqlite3_result_int64(context, p->a[n].nEq); break; - case 4: sqlite3_result_int64(context, p->a[n].nLt); break; - default: sqlite3_result_int64(context, p->a[n].nDLt); break; - } -} -static const FuncDef stat3GetFuncdef = { - -1, /* nArg */ - SQLITE_UTF8, /* iPrefEnc */ - 0, /* flags */ - 0, /* pUserData */ - 0, /* pNext */ - stat3Get, /* xFunc */ - 0, /* xStep */ - 0, /* xFinalize */ - "stat3_get", /* zName */ - 0, /* pHash */ - 0 /* pDestructor */ -}; -#endif /* SQLITE_ENABLE_STAT3 */ - - - - -/* -** Generate code to do an analysis of all indices associated with -** a single table. -*/ -static void analyzeOneTable( - Parse *pParse, /* Parser context */ - Table *pTab, /* Table whose indices are to be analyzed */ - Index *pOnlyIdx, /* If not NULL, only analyze this one index */ - int iStatCur, /* Index of VdbeCursor that writes the sqlite_stat1 table */ - int iMem /* Available memory locations begin here */ -){ - sqlite3 *db = pParse->db; /* Database handle */ - Index *pIdx; /* An index to being analyzed */ - int iIdxCur; /* Cursor open on index being analyzed */ - Vdbe *v; /* The virtual machine being built up */ - int i; /* Loop counter */ - int topOfLoop; /* The top of the loop */ - int endOfLoop; /* The end of the loop */ - int jZeroRows = -1; /* Jump from here if number of rows is zero */ - int iDb; /* Index of database containing pTab */ - int regTabname = iMem++; /* Register containing table name */ - int regIdxname = iMem++; /* Register containing index name */ - int regStat1 = iMem++; /* The stat column of sqlite_stat1 */ -#ifdef SQLITE_ENABLE_STAT3 - int regNumEq = regStat1; /* Number of instances. Same as regStat1 */ - int regNumLt = iMem++; /* Number of keys less than regSample */ - int regNumDLt = iMem++; /* Number of distinct keys less than regSample */ - int regSample = iMem++; /* The next sample value */ - int regRowid = regSample; /* Rowid of a sample */ - int regAccum = iMem++; /* Register to hold Stat3Accum object */ - int regLoop = iMem++; /* Loop counter */ - int regCount = iMem++; /* Number of rows in the table or index */ - int regTemp1 = iMem++; /* Intermediate register */ - int regTemp2 = iMem++; /* Intermediate register */ - int once = 1; /* One-time initialization */ - int shortJump = 0; /* Instruction address */ - int iTabCur = pParse->nTab++; /* Table cursor */ -#endif - int regCol = iMem++; /* Content of a column in analyzed table */ - int regRec = iMem++; /* Register holding completed record */ - int regTemp = iMem++; /* Temporary use register */ - int regNewRowid = iMem++; /* Rowid for the inserted record */ - - - v = sqlite3GetVdbe(pParse); - if( v==0 || NEVER(pTab==0) ){ - return; - } - if( pTab->tnum==0 ){ - /* Do not gather statistics on views or virtual tables */ - return; - } - if( memcmp(pTab->zName, "sqlite_", 7)==0 ){ - /* Do not gather statistics on system tables */ - return; - } - assert( sqlite3BtreeHoldsAllMutexes(db) ); - iDb = sqlite3SchemaToIndex(db, pTab->pSchema); - assert( iDb>=0 ); - assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); -#ifndef SQLITE_OMIT_AUTHORIZATION - if( sqlite3AuthCheck(pParse, SQLITE_ANALYZE, pTab->zName, 0, - db->aDb[iDb].zName ) ){ - return; - } -#endif - - /* Establish a read-lock on the table at the shared-cache level. */ - sqlite3TableLock(pParse, iDb, pTab->tnum, 0, pTab->zName); - - iIdxCur = pParse->nTab++; - sqlite3VdbeAddOp4(v, OP_String8, 0, regTabname, 0, pTab->zName, 0); - for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ - int nCol; - KeyInfo *pKey; - int addrIfNot = 0; /* address of OP_IfNot */ - int *aChngAddr; /* Array of jump instruction addresses */ - - if( pOnlyIdx && pOnlyIdx!=pIdx ) continue; - VdbeNoopComment((v, "Begin analysis of %s", pIdx->zName)); - nCol = pIdx->nColumn; - aChngAddr = sqlite3DbMallocRaw(db, sizeof(int)*nCol); - if( aChngAddr==0 ) continue; - pKey = sqlite3IndexKeyinfo(pParse, pIdx); - if( iMem+1+(nCol*2)>pParse->nMem ){ - pParse->nMem = iMem+1+(nCol*2); - } - - /* Open a cursor to the index to be analyzed. */ - assert( iDb==sqlite3SchemaToIndex(db, pIdx->pSchema) ); - sqlite3VdbeAddOp4(v, OP_OpenRead, iIdxCur, pIdx->tnum, iDb, - (char *)pKey, P4_KEYINFO_HANDOFF); - VdbeComment((v, "%s", pIdx->zName)); - - /* Populate the register containing the index name. */ - sqlite3VdbeAddOp4(v, OP_String8, 0, regIdxname, 0, pIdx->zName, 0); - -#ifdef SQLITE_ENABLE_STAT3 - if( once ){ - once = 0; - sqlite3OpenTable(pParse, iTabCur, iDb, pTab, OP_OpenRead); - } - sqlite3VdbeAddOp2(v, OP_Count, iIdxCur, regCount); - sqlite3VdbeAddOp2(v, OP_Integer, SQLITE_STAT3_SAMPLES, regTemp1); - sqlite3VdbeAddOp2(v, OP_Integer, 0, regNumEq); - sqlite3VdbeAddOp2(v, OP_Integer, 0, regNumLt); - sqlite3VdbeAddOp2(v, OP_Integer, -1, regNumDLt); - sqlite3VdbeAddOp4(v, OP_Function, 1, regCount, regAccum, - (char*)&stat3InitFuncdef, P4_FUNCDEF); - sqlite3VdbeChangeP5(v, 2); -#endif /* SQLITE_ENABLE_STAT3 */ - - /* The block of memory cells initialized here is used as follows. - ** - ** iMem: - ** The total number of rows in the table. - ** - ** iMem+1 .. iMem+nCol: - ** Number of distinct entries in index considering the - ** left-most N columns only, where N is between 1 and nCol, - ** inclusive. - ** - ** iMem+nCol+1 .. Mem+2*nCol: - ** Previous value of indexed columns, from left to right. - ** - ** Cells iMem through iMem+nCol are initialized to 0. The others are - ** initialized to contain an SQL NULL. - */ - for(i=0; i<=nCol; i++){ - sqlite3VdbeAddOp2(v, OP_Integer, 0, iMem+i); - } - for(i=0; iazColl!=0 ); - assert( pIdx->azColl[i]!=0 ); - pColl = sqlite3LocateCollSeq(pParse, pIdx->azColl[i]); - aChngAddr[i] = sqlite3VdbeAddOp4(v, OP_Ne, regCol, 0, iMem+nCol+i+1, - (char*)pColl, P4_COLLSEQ); - sqlite3VdbeChangeP5(v, SQLITE_NULLEQ); - VdbeComment((v, "jump if column %d changed", i)); -#ifdef SQLITE_ENABLE_STAT3 - if( i==0 ){ - sqlite3VdbeAddOp2(v, OP_AddImm, regNumEq, 1); - VdbeComment((v, "incr repeat count")); - } -#endif - } - sqlite3VdbeAddOp2(v, OP_Goto, 0, endOfLoop); - for(i=0; inColumn, regRowid); - sqlite3VdbeAddOp3(v, OP_Add, regNumEq, regNumLt, regNumLt); - sqlite3VdbeAddOp2(v, OP_AddImm, regNumDLt, 1); - sqlite3VdbeAddOp2(v, OP_Integer, 1, regNumEq); -#endif - } - sqlite3VdbeAddOp2(v, OP_AddImm, iMem+i+1, 1); - sqlite3VdbeAddOp3(v, OP_Column, iIdxCur, i, iMem+nCol+i+1); - } - sqlite3DbFree(db, aChngAddr); - - /* Always jump here after updating the iMem+1...iMem+1+nCol counters */ - sqlite3VdbeResolveLabel(v, endOfLoop); - - sqlite3VdbeAddOp2(v, OP_Next, iIdxCur, topOfLoop); - sqlite3VdbeAddOp1(v, OP_Close, iIdxCur); -#ifdef SQLITE_ENABLE_STAT3 - sqlite3VdbeAddOp4(v, OP_Function, 1, regNumEq, regTemp2, - (char*)&stat3PushFuncdef, P4_FUNCDEF); - sqlite3VdbeChangeP5(v, 5); - sqlite3VdbeAddOp2(v, OP_Integer, -1, regLoop); - shortJump = - sqlite3VdbeAddOp2(v, OP_AddImm, regLoop, 1); - sqlite3VdbeAddOp4(v, OP_Function, 1, regAccum, regTemp1, - (char*)&stat3GetFuncdef, P4_FUNCDEF); - sqlite3VdbeChangeP5(v, 2); - sqlite3VdbeAddOp1(v, OP_IsNull, regTemp1); - sqlite3VdbeAddOp3(v, OP_NotExists, iTabCur, shortJump, regTemp1); - sqlite3VdbeAddOp3(v, OP_Column, iTabCur, pIdx->aiColumn[0], regSample); - sqlite3ColumnDefault(v, pTab, pIdx->aiColumn[0], regSample); - sqlite3VdbeAddOp4(v, OP_Function, 1, regAccum, regNumEq, - (char*)&stat3GetFuncdef, P4_FUNCDEF); - sqlite3VdbeChangeP5(v, 3); - sqlite3VdbeAddOp4(v, OP_Function, 1, regAccum, regNumLt, - (char*)&stat3GetFuncdef, P4_FUNCDEF); - sqlite3VdbeChangeP5(v, 4); - sqlite3VdbeAddOp4(v, OP_Function, 1, regAccum, regNumDLt, - (char*)&stat3GetFuncdef, P4_FUNCDEF); - sqlite3VdbeChangeP5(v, 5); - sqlite3VdbeAddOp4(v, OP_MakeRecord, regTabname, 6, regRec, "bbbbbb", 0); - sqlite3VdbeAddOp2(v, OP_NewRowid, iStatCur+1, regNewRowid); - sqlite3VdbeAddOp3(v, OP_Insert, iStatCur+1, regRec, regNewRowid); - sqlite3VdbeAddOp2(v, OP_Goto, 0, shortJump); - sqlite3VdbeJumpHere(v, shortJump+2); -#endif - - /* Store the results in sqlite_stat1. - ** - ** The result is a single row of the sqlite_stat1 table. The first - ** two columns are the names of the table and index. The third column - ** is a string composed of a list of integer statistics about the - ** index. The first integer in the list is the total number of entries - ** in the index. There is one additional integer in the list for each - ** column of the table. This additional integer is a guess of how many - ** rows of the table the index will select. If D is the count of distinct - ** values and K is the total number of rows, then the integer is computed - ** as: - ** - ** I = (K+D-1)/D - ** - ** If K==0 then no entry is made into the sqlite_stat1 table. - ** If K>0 then it is always the case the D>0 so division by zero - ** is never possible. - */ - sqlite3VdbeAddOp2(v, OP_SCopy, iMem, regStat1); - if( jZeroRows<0 ){ - jZeroRows = sqlite3VdbeAddOp1(v, OP_IfNot, iMem); - } - for(i=0; ipIndex==0 ){ - sqlite3VdbeAddOp3(v, OP_OpenRead, iIdxCur, pTab->tnum, iDb); - VdbeComment((v, "%s", pTab->zName)); - sqlite3VdbeAddOp2(v, OP_Count, iIdxCur, regStat1); - sqlite3VdbeAddOp1(v, OP_Close, iIdxCur); - jZeroRows = sqlite3VdbeAddOp1(v, OP_IfNot, regStat1); - }else{ - sqlite3VdbeJumpHere(v, jZeroRows); - jZeroRows = sqlite3VdbeAddOp0(v, OP_Goto); - } - sqlite3VdbeAddOp2(v, OP_Null, 0, regIdxname); - sqlite3VdbeAddOp4(v, OP_MakeRecord, regTabname, 3, regRec, "aaa", 0); - sqlite3VdbeAddOp2(v, OP_NewRowid, iStatCur, regNewRowid); - sqlite3VdbeAddOp3(v, OP_Insert, iStatCur, regRec, regNewRowid); - sqlite3VdbeChangeP5(v, OPFLAG_APPEND); - if( pParse->nMemnMem = regRec; - sqlite3VdbeJumpHere(v, jZeroRows); -} - - -/* -** Generate code that will cause the most recent index analysis to -** be loaded into internal hash tables where is can be used. -*/ -static void loadAnalysis(Parse *pParse, int iDb){ - Vdbe *v = sqlite3GetVdbe(pParse); - if( v ){ - sqlite3VdbeAddOp1(v, OP_LoadAnalysis, iDb); - } -} - -/* -** Generate code that will do an analysis of an entire database -*/ -static void analyzeDatabase(Parse *pParse, int iDb){ - sqlite3 *db = pParse->db; - Schema *pSchema = db->aDb[iDb].pSchema; /* Schema of database iDb */ - HashElem *k; - int iStatCur; - int iMem; - - sqlite3BeginWriteOperation(pParse, 0, iDb); - iStatCur = pParse->nTab; - pParse->nTab += 3; - openStatTable(pParse, iDb, iStatCur, 0, 0); - iMem = pParse->nMem+1; - assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); - for(k=sqliteHashFirst(&pSchema->tblHash); k; k=sqliteHashNext(k)){ - Table *pTab = (Table*)sqliteHashData(k); - analyzeOneTable(pParse, pTab, 0, iStatCur, iMem); - } - loadAnalysis(pParse, iDb); -} - -/* -** Generate code that will do an analysis of a single table in -** a database. If pOnlyIdx is not NULL then it is a single index -** in pTab that should be analyzed. -*/ -static void analyzeTable(Parse *pParse, Table *pTab, Index *pOnlyIdx){ - int iDb; - int iStatCur; - - assert( pTab!=0 ); - assert( sqlite3BtreeHoldsAllMutexes(pParse->db) ); - iDb = sqlite3SchemaToIndex(pParse->db, pTab->pSchema); - sqlite3BeginWriteOperation(pParse, 0, iDb); - iStatCur = pParse->nTab; - pParse->nTab += 3; - if( pOnlyIdx ){ - openStatTable(pParse, iDb, iStatCur, pOnlyIdx->zName, "idx"); - }else{ - openStatTable(pParse, iDb, iStatCur, pTab->zName, "tbl"); - } - analyzeOneTable(pParse, pTab, pOnlyIdx, iStatCur, pParse->nMem+1); - loadAnalysis(pParse, iDb); -} - -/* -** Generate code for the ANALYZE command. The parser calls this routine -** when it recognizes an ANALYZE command. -** -** ANALYZE -- 1 -** ANALYZE -- 2 -** ANALYZE ?.? -- 3 -** -** Form 1 causes all indices in all attached databases to be analyzed. -** Form 2 analyzes all indices the single database named. -** Form 3 analyzes all indices associated with the named table. -*/ -void sqlite3Analyze(Parse *pParse, Token *pName1, Token *pName2){ - sqlite3 *db = pParse->db; - int iDb; - int i; - char *z, *zDb; - Table *pTab; - Index *pIdx; - Token *pTableName; - - /* Read the database schema. If an error occurs, leave an error message - ** and code in pParse and return NULL. */ - assert( sqlite3BtreeHoldsAllMutexes(pParse->db) ); - if( SQLITE_OK!=sqlite3ReadSchema(pParse) ){ - return; - } - - assert( pName2!=0 || pName1==0 ); - if( pName1==0 ){ - /* Form 1: Analyze everything */ - for(i=0; inDb; i++){ - if( i==1 ) continue; /* Do not analyze the TEMP database */ - analyzeDatabase(pParse, i); - } - }else if( pName2->n==0 ){ - /* Form 2: Analyze the database or table named */ - iDb = sqlite3FindDb(db, pName1); - if( iDb>=0 ){ - analyzeDatabase(pParse, iDb); - }else{ - z = sqlite3NameFromToken(db, pName1); - if( z ){ - if( (pIdx = sqlite3FindIndex(db, z, 0))!=0 ){ - analyzeTable(pParse, pIdx->pTable, pIdx); - }else if( (pTab = sqlite3LocateTable(pParse, 0, z, 0))!=0 ){ - analyzeTable(pParse, pTab, 0); - } - sqlite3DbFree(db, z); - } - } - }else{ - /* Form 3: Analyze the fully qualified table name */ - iDb = sqlite3TwoPartName(pParse, pName1, pName2, &pTableName); - if( iDb>=0 ){ - zDb = db->aDb[iDb].zName; - z = sqlite3NameFromToken(db, pTableName); - if( z ){ - if( (pIdx = sqlite3FindIndex(db, z, zDb))!=0 ){ - analyzeTable(pParse, pIdx->pTable, pIdx); - }else if( (pTab = sqlite3LocateTable(pParse, 0, z, zDb))!=0 ){ - analyzeTable(pParse, pTab, 0); - } - sqlite3DbFree(db, z); - } - } - } -} - -/* -** Used to pass information from the analyzer reader through to the -** callback routine. -*/ -typedef struct analysisInfo analysisInfo; -struct analysisInfo { - sqlite3 *db; - const char *zDatabase; -}; - -/* -** This callback is invoked once for each index when reading the -** sqlite_stat1 table. -** -** argv[0] = name of the table -** argv[1] = name of the index (might be NULL) -** argv[2] = results of analysis - on integer for each column -** -** Entries for which argv[1]==NULL simply record the number of rows in -** the table. -*/ -static int analysisLoader(void *pData, int argc, char **argv, char **NotUsed){ - analysisInfo *pInfo = (analysisInfo*)pData; - Index *pIndex; - Table *pTable; - int i, c, n; - tRowcnt v; - const char *z; - - assert( argc==3 ); - UNUSED_PARAMETER2(NotUsed, argc); - - if( argv==0 || argv[0]==0 || argv[2]==0 ){ - return 0; - } - pTable = sqlite3FindTable(pInfo->db, argv[0], pInfo->zDatabase); - if( pTable==0 ){ - return 0; - } - if( argv[1] ){ - pIndex = sqlite3FindIndex(pInfo->db, argv[1], pInfo->zDatabase); - }else{ - pIndex = 0; - } - n = pIndex ? pIndex->nColumn : 0; - z = argv[2]; - for(i=0; *z && i<=n; i++){ - v = 0; - while( (c=z[0])>='0' && c<='9' ){ - v = v*10 + c - '0'; - z++; - } - if( i==0 ) pTable->nRowEst = v; - if( pIndex==0 ) break; - pIndex->aiRowEst[i] = v; - if( *z==' ' ) z++; - if( memcmp(z, "unordered", 10)==0 ){ - pIndex->bUnordered = 1; - break; - } - } - return 0; -} - -/* -** If the Index.aSample variable is not NULL, delete the aSample[] array -** and its contents. -*/ -void sqlite3DeleteIndexSamples(sqlite3 *db, Index *pIdx){ -#ifdef SQLITE_ENABLE_STAT3 - if( pIdx->aSample ){ - int j; - for(j=0; jnSample; j++){ - IndexSample *p = &pIdx->aSample[j]; - if( p->eType==SQLITE_TEXT || p->eType==SQLITE_BLOB ){ - sqlite3DbFree(db, p->u.z); - } - } - sqlite3DbFree(db, pIdx->aSample); - } - if( db && db->pnBytesFreed==0 ){ - pIdx->nSample = 0; - pIdx->aSample = 0; - } -#else - UNUSED_PARAMETER(db); - UNUSED_PARAMETER(pIdx); -#endif -} - -#ifdef SQLITE_ENABLE_STAT3 -/* -** Load content from the sqlite_stat3 table into the Index.aSample[] -** arrays of all indices. -*/ -static int loadStat3(sqlite3 *db, const char *zDb){ - int rc; /* Result codes from subroutines */ - sqlite3_stmt *pStmt = 0; /* An SQL statement being run */ - char *zSql; /* Text of the SQL statement */ - Index *pPrevIdx = 0; /* Previous index in the loop */ - int idx = 0; /* slot in pIdx->aSample[] for next sample */ - int eType; /* Datatype of a sample */ - IndexSample *pSample; /* A slot in pIdx->aSample[] */ - - if( !sqlite3FindTable(db, "sqlite_stat3", zDb) ){ - return SQLITE_OK; - } - - zSql = sqlite3MPrintf(db, - "SELECT idx,count(*) FROM %Q.sqlite_stat3" - " GROUP BY idx", zDb); - if( !zSql ){ - return SQLITE_NOMEM; - } - rc = sqlite3_prepare(db, zSql, -1, &pStmt, 0); - sqlite3DbFree(db, zSql); - if( rc ) return rc; - - while( sqlite3_step(pStmt)==SQLITE_ROW ){ - char *zIndex; /* Index name */ - Index *pIdx; /* Pointer to the index object */ - int nSample; /* Number of samples */ - - zIndex = (char *)sqlite3_column_text(pStmt, 0); - if( zIndex==0 ) continue; - nSample = sqlite3_column_int(pStmt, 1); - pIdx = sqlite3FindIndex(db, zIndex, zDb); - if( pIdx==0 ) continue; - assert( pIdx->nSample==0 ); - pIdx->nSample = nSample; - pIdx->aSample = sqlite3MallocZero( nSample*sizeof(IndexSample) ); - pIdx->avgEq = pIdx->aiRowEst[1]; - if( pIdx->aSample==0 ){ - db->mallocFailed = 1; - sqlite3_finalize(pStmt); - return SQLITE_NOMEM; - } - } - rc = sqlite3_finalize(pStmt); - if( rc ) return rc; - - zSql = sqlite3MPrintf(db, - "SELECT idx,neq,nlt,ndlt,sample FROM %Q.sqlite_stat3", zDb); - if( !zSql ){ - return SQLITE_NOMEM; - } - rc = sqlite3_prepare(db, zSql, -1, &pStmt, 0); - sqlite3DbFree(db, zSql); - if( rc ) return rc; - - while( sqlite3_step(pStmt)==SQLITE_ROW ){ - char *zIndex; /* Index name */ - Index *pIdx; /* Pointer to the index object */ - int i; /* Loop counter */ - tRowcnt sumEq; /* Sum of the nEq values */ - - zIndex = (char *)sqlite3_column_text(pStmt, 0); - if( zIndex==0 ) continue; - pIdx = sqlite3FindIndex(db, zIndex, zDb); - if( pIdx==0 ) continue; - if( pIdx==pPrevIdx ){ - idx++; - }else{ - pPrevIdx = pIdx; - idx = 0; - } - assert( idxnSample ); - pSample = &pIdx->aSample[idx]; - pSample->nEq = (tRowcnt)sqlite3_column_int64(pStmt, 1); - pSample->nLt = (tRowcnt)sqlite3_column_int64(pStmt, 2); - pSample->nDLt = (tRowcnt)sqlite3_column_int64(pStmt, 3); - if( idx==pIdx->nSample-1 ){ - if( pSample->nDLt>0 ){ - for(i=0, sumEq=0; i<=idx-1; i++) sumEq += pIdx->aSample[i].nEq; - pIdx->avgEq = (pSample->nLt - sumEq)/pSample->nDLt; - } - if( pIdx->avgEq<=0 ) pIdx->avgEq = 1; - } - eType = sqlite3_column_type(pStmt, 4); - pSample->eType = (u8)eType; - switch( eType ){ - case SQLITE_INTEGER: { - pSample->u.i = sqlite3_column_int64(pStmt, 4); - break; - } - case SQLITE_FLOAT: { - pSample->u.r = sqlite3_column_double(pStmt, 4); - break; - } - case SQLITE_NULL: { - break; - } - default: assert( eType==SQLITE_TEXT || eType==SQLITE_BLOB ); { - const char *z = (const char *)( - (eType==SQLITE_BLOB) ? - sqlite3_column_blob(pStmt, 4): - sqlite3_column_text(pStmt, 4) - ); - int n = z ? sqlite3_column_bytes(pStmt, 4) : 0; - pSample->nByte = n; - if( n < 1){ - pSample->u.z = 0; - }else{ - pSample->u.z = sqlite3Malloc(n); - if( pSample->u.z==0 ){ - db->mallocFailed = 1; - sqlite3_finalize(pStmt); - return SQLITE_NOMEM; - } - memcpy(pSample->u.z, z, n); - } - } - } - } - return sqlite3_finalize(pStmt); -} -#endif /* SQLITE_ENABLE_STAT3 */ - -/* -** Load the content of the sqlite_stat1 and sqlite_stat3 tables. The -** contents of sqlite_stat1 are used to populate the Index.aiRowEst[] -** arrays. The contents of sqlite_stat3 are used to populate the -** Index.aSample[] arrays. -** -** If the sqlite_stat1 table is not present in the database, SQLITE_ERROR -** is returned. In this case, even if SQLITE_ENABLE_STAT3 was defined -** during compilation and the sqlite_stat3 table is present, no data is -** read from it. -** -** If SQLITE_ENABLE_STAT3 was defined during compilation and the -** sqlite_stat3 table is not present in the database, SQLITE_ERROR is -** returned. However, in this case, data is read from the sqlite_stat1 -** table (if it is present) before returning. -** -** If an OOM error occurs, this function always sets db->mallocFailed. -** This means if the caller does not care about other errors, the return -** code may be ignored. -*/ -int sqlite3AnalysisLoad(sqlite3 *db, int iDb){ - analysisInfo sInfo; - HashElem *i; - char *zSql; - int rc; - - assert( iDb>=0 && iDbnDb ); - assert( db->aDb[iDb].pBt!=0 ); - - /* Clear any prior statistics */ - assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); - for(i=sqliteHashFirst(&db->aDb[iDb].pSchema->idxHash);i;i=sqliteHashNext(i)){ - Index *pIdx = sqliteHashData(i); - sqlite3DefaultRowEst(pIdx); -#ifdef SQLITE_ENABLE_STAT3 - sqlite3DeleteIndexSamples(db, pIdx); - pIdx->aSample = 0; -#endif - } - - /* Check to make sure the sqlite_stat1 table exists */ - sInfo.db = db; - sInfo.zDatabase = db->aDb[iDb].zName; - if( sqlite3FindTable(db, "sqlite_stat1", sInfo.zDatabase)==0 ){ - return SQLITE_ERROR; - } - - /* Load new statistics out of the sqlite_stat1 table */ - zSql = sqlite3MPrintf(db, - "SELECT tbl,idx,stat FROM %Q.sqlite_stat1", sInfo.zDatabase); - if( zSql==0 ){ - rc = SQLITE_NOMEM; - }else{ - rc = sqlite3_exec(db, zSql, analysisLoader, &sInfo, 0); - sqlite3DbFree(db, zSql); - } - - - /* Load the statistics from the sqlite_stat3 table. */ -#ifdef SQLITE_ENABLE_STAT3 - if( rc==SQLITE_OK ){ - rc = loadStat3(db, sInfo.zDatabase); - } -#endif - - if( rc==SQLITE_NOMEM ){ - db->mallocFailed = 1; - } - return rc; -} - - -#endif /* SQLITE_OMIT_ANALYZE */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/attach.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/attach.c deleted file mode 100644 index e431492fbd..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/attach.c +++ /dev/null @@ -1,557 +0,0 @@ -/* -** 2003 April 6 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file contains code used to implement the ATTACH and DETACH commands. -*/ -#include "sqliteInt.h" - -#ifndef SQLITE_OMIT_ATTACH -/* -** Resolve an expression that was part of an ATTACH or DETACH statement. This -** is slightly different from resolving a normal SQL expression, because simple -** identifiers are treated as strings, not possible column names or aliases. -** -** i.e. if the parser sees: -** -** ATTACH DATABASE abc AS def -** -** it treats the two expressions as literal strings 'abc' and 'def' instead of -** looking for columns of the same name. -** -** This only applies to the root node of pExpr, so the statement: -** -** ATTACH DATABASE abc||def AS 'db2' -** -** will fail because neither abc or def can be resolved. -*/ -static int resolveAttachExpr(NameContext *pName, Expr *pExpr) -{ - int rc = SQLITE_OK; - if( pExpr ){ - if( pExpr->op!=TK_ID ){ - rc = sqlite3ResolveExprNames(pName, pExpr); - if( rc==SQLITE_OK && !sqlite3ExprIsConstant(pExpr) ){ - sqlite3ErrorMsg(pName->pParse, "invalid name: \"%s\"", pExpr->u.zToken); - return SQLITE_ERROR; - } - }else{ - pExpr->op = TK_STRING; - } - } - return rc; -} - -/* -** An SQL user-function registered to do the work of an ATTACH statement. The -** three arguments to the function come directly from an attach statement: -** -** ATTACH DATABASE x AS y KEY z -** -** SELECT sqlite_attach(x, y, z) -** -** If the optional "KEY z" syntax is omitted, an SQL NULL is passed as the -** third argument. -*/ -static void attachFunc( - sqlite3_context *context, - int NotUsed, - sqlite3_value **argv -){ - int i; - int rc = 0; - sqlite3 *db = sqlite3_context_db_handle(context); - const char *zName; - const char *zFile; - char *zPath = 0; - char *zErr = 0; - unsigned int flags; - Db *aNew; - char *zErrDyn = 0; - sqlite3_vfs *pVfs; - - UNUSED_PARAMETER(NotUsed); - - zFile = (const char *)sqlite3_value_text(argv[0]); - zName = (const char *)sqlite3_value_text(argv[1]); - if( zFile==0 ) zFile = ""; - if( zName==0 ) zName = ""; - - /* Check for the following errors: - ** - ** * Too many attached databases, - ** * Transaction currently open - ** * Specified database name already being used. - */ - if( db->nDb>=db->aLimit[SQLITE_LIMIT_ATTACHED]+2 ){ - zErrDyn = sqlite3MPrintf(db, "too many attached databases - max %d", - db->aLimit[SQLITE_LIMIT_ATTACHED] - ); - goto attach_error; - } - if( !db->autoCommit ){ - zErrDyn = sqlite3MPrintf(db, "cannot ATTACH database within transaction"); - goto attach_error; - } - for(i=0; inDb; i++){ - char *z = db->aDb[i].zName; - assert( z && zName ); - if( sqlite3StrICmp(z, zName)==0 ){ - zErrDyn = sqlite3MPrintf(db, "database %s is already in use", zName); - goto attach_error; - } - } - - /* Allocate the new entry in the db->aDb[] array and initialise the schema - ** hash tables. - */ - if( db->aDb==db->aDbStatic ){ - aNew = sqlite3DbMallocRaw(db, sizeof(db->aDb[0])*3 ); - if( aNew==0 ) return; - memcpy(aNew, db->aDb, sizeof(db->aDb[0])*2); - }else{ - aNew = sqlite3DbRealloc(db, db->aDb, sizeof(db->aDb[0])*(db->nDb+1) ); - if( aNew==0 ) return; - } - db->aDb = aNew; - aNew = &db->aDb[db->nDb]; - memset(aNew, 0, sizeof(*aNew)); - - /* Open the database file. If the btree is successfully opened, use - ** it to obtain the database schema. At this point the schema may - ** or may not be initialised. - */ - flags = db->openFlags; - rc = sqlite3ParseUri(db->pVfs->zName, zFile, &flags, &pVfs, &zPath, &zErr); - if( rc!=SQLITE_OK ){ - if( rc==SQLITE_NOMEM ) db->mallocFailed = 1; - sqlite3_result_error(context, zErr, -1); - sqlite3_free(zErr); - return; - } - assert( pVfs ); - flags |= SQLITE_OPEN_MAIN_DB; - rc = sqlite3BtreeOpen(pVfs, zPath, db, &aNew->pBt, 0, flags); - sqlite3_free( zPath ); - db->nDb++; - if( rc==SQLITE_CONSTRAINT ){ - rc = SQLITE_ERROR; - zErrDyn = sqlite3MPrintf(db, "database is already attached"); - }else if( rc==SQLITE_OK ){ - Pager *pPager; - aNew->pSchema = sqlite3SchemaGet(db, aNew->pBt); - if( !aNew->pSchema ){ - rc = SQLITE_NOMEM; - }else if( aNew->pSchema->file_format && aNew->pSchema->enc!=ENC(db) ){ - zErrDyn = sqlite3MPrintf(db, - "attached databases must use the same text encoding as main database"); - rc = SQLITE_ERROR; - } - pPager = sqlite3BtreePager(aNew->pBt); - sqlite3PagerLockingMode(pPager, db->dfltLockMode); - sqlite3BtreeSecureDelete(aNew->pBt, - sqlite3BtreeSecureDelete(db->aDb[0].pBt,-1) ); - } - aNew->safety_level = 3; - aNew->zName = sqlite3DbStrDup(db, zName); - if( rc==SQLITE_OK && aNew->zName==0 ){ - rc = SQLITE_NOMEM; - } - - -#ifdef SQLITE_HAS_CODEC - if( rc==SQLITE_OK ){ - extern int sqlite3CodecAttach(sqlite3*, int, const void*, int); - extern void sqlite3CodecGetKey(sqlite3*, int, void**, int*); - int nKey; - char *zKey; - int t = sqlite3_value_type(argv[2]); - switch( t ){ - case SQLITE_INTEGER: - case SQLITE_FLOAT: - zErrDyn = sqlite3DbStrDup(db, "Invalid key value"); - rc = SQLITE_ERROR; - break; - - case SQLITE_TEXT: - case SQLITE_BLOB: - nKey = sqlite3_value_bytes(argv[2]); - zKey = (char *)sqlite3_value_blob(argv[2]); - rc = sqlite3CodecAttach(db, db->nDb-1, zKey, nKey); - break; - - case SQLITE_NULL: - /* No key specified. Use the key from the main database */ - sqlite3CodecGetKey(db, 0, (void**)&zKey, &nKey); - if( nKey>0 || sqlite3BtreeGetReserve(db->aDb[0].pBt)>0 ){ - rc = sqlite3CodecAttach(db, db->nDb-1, zKey, nKey); - } - break; - } - } -#endif - - /* If the file was opened successfully, read the schema for the new database. - ** If this fails, or if opening the file failed, then close the file and - ** remove the entry from the db->aDb[] array. i.e. put everything back the way - ** we found it. - */ - if( rc==SQLITE_OK ){ - sqlite3BtreeEnterAll(db); - rc = sqlite3Init(db, &zErrDyn); - sqlite3BtreeLeaveAll(db); - } - if( rc ){ - int iDb = db->nDb - 1; - assert( iDb>=2 ); - if( db->aDb[iDb].pBt ){ - sqlite3BtreeClose(db->aDb[iDb].pBt); - db->aDb[iDb].pBt = 0; - db->aDb[iDb].pSchema = 0; - } - sqlite3ResetInternalSchema(db, -1); - db->nDb = iDb; - if( rc==SQLITE_NOMEM || rc==SQLITE_IOERR_NOMEM ){ - db->mallocFailed = 1; - sqlite3DbFree(db, zErrDyn); - zErrDyn = sqlite3MPrintf(db, "out of memory"); - }else if( zErrDyn==0 ){ - zErrDyn = sqlite3MPrintf(db, "unable to open database: %s", zFile); - } - goto attach_error; - } - - return; - -attach_error: - /* Return an error if we get here */ - if( zErrDyn ){ - sqlite3_result_error(context, zErrDyn, -1); - sqlite3DbFree(db, zErrDyn); - } - if( rc ) sqlite3_result_error_code(context, rc); -} - -/* -** An SQL user-function registered to do the work of an DETACH statement. The -** three arguments to the function come directly from a detach statement: -** -** DETACH DATABASE x -** -** SELECT sqlite_detach(x) -*/ -static void detachFunc( - sqlite3_context *context, - int NotUsed, - sqlite3_value **argv -){ - const char *zName = (const char *)sqlite3_value_text(argv[0]); - sqlite3 *db = sqlite3_context_db_handle(context); - int i; - Db *pDb = 0; - char zErr[128]; - - UNUSED_PARAMETER(NotUsed); - - if( zName==0 ) zName = ""; - for(i=0; inDb; i++){ - pDb = &db->aDb[i]; - if( pDb->pBt==0 ) continue; - if( sqlite3StrICmp(pDb->zName, zName)==0 ) break; - } - - if( i>=db->nDb ){ - sqlite3_snprintf(sizeof(zErr),zErr, "no such database: %s", zName); - goto detach_error; - } - if( i<2 ){ - sqlite3_snprintf(sizeof(zErr),zErr, "cannot detach database %s", zName); - goto detach_error; - } - if( !db->autoCommit ){ - sqlite3_snprintf(sizeof(zErr), zErr, - "cannot DETACH database within transaction"); - goto detach_error; - } - if( sqlite3BtreeIsInReadTrans(pDb->pBt) || sqlite3BtreeIsInBackup(pDb->pBt) ){ - sqlite3_snprintf(sizeof(zErr),zErr, "database %s is locked", zName); - goto detach_error; - } - - sqlite3BtreeClose(pDb->pBt); - pDb->pBt = 0; - pDb->pSchema = 0; - sqlite3ResetInternalSchema(db, -1); - return; - -detach_error: - sqlite3_result_error(context, zErr, -1); -} - -/* -** This procedure generates VDBE code for a single invocation of either the -** sqlite_detach() or sqlite_attach() SQL user functions. -*/ -static void codeAttach( - Parse *pParse, /* The parser context */ - int type, /* Either SQLITE_ATTACH or SQLITE_DETACH */ - FuncDef const *pFunc,/* FuncDef wrapper for detachFunc() or attachFunc() */ - Expr *pAuthArg, /* Expression to pass to authorization callback */ - Expr *pFilename, /* Name of database file */ - Expr *pDbname, /* Name of the database to use internally */ - Expr *pKey /* Database key for encryption extension */ -){ - int rc; - NameContext sName; - Vdbe *v; - sqlite3* db = pParse->db; - int regArgs; - - memset(&sName, 0, sizeof(NameContext)); - sName.pParse = pParse; - - if( - SQLITE_OK!=(rc = resolveAttachExpr(&sName, pFilename)) || - SQLITE_OK!=(rc = resolveAttachExpr(&sName, pDbname)) || - SQLITE_OK!=(rc = resolveAttachExpr(&sName, pKey)) - ){ - pParse->nErr++; - goto attach_end; - } - -#ifndef SQLITE_OMIT_AUTHORIZATION - if( pAuthArg ){ - char *zAuthArg; - if( pAuthArg->op==TK_STRING ){ - zAuthArg = pAuthArg->u.zToken; - }else{ - zAuthArg = 0; - } - rc = sqlite3AuthCheck(pParse, type, zAuthArg, 0, 0); - if(rc!=SQLITE_OK ){ - goto attach_end; - } - } -#endif /* SQLITE_OMIT_AUTHORIZATION */ - - - v = sqlite3GetVdbe(pParse); - regArgs = sqlite3GetTempRange(pParse, 4); - sqlite3ExprCode(pParse, pFilename, regArgs); - sqlite3ExprCode(pParse, pDbname, regArgs+1); - sqlite3ExprCode(pParse, pKey, regArgs+2); - - assert( v || db->mallocFailed ); - if( v ){ - sqlite3VdbeAddOp3(v, OP_Function, 0, regArgs+3-pFunc->nArg, regArgs+3); - assert( pFunc->nArg==-1 || (pFunc->nArg&0xff)==pFunc->nArg ); - sqlite3VdbeChangeP5(v, (u8)(pFunc->nArg)); - sqlite3VdbeChangeP4(v, -1, (char *)pFunc, P4_FUNCDEF); - - /* Code an OP_Expire. For an ATTACH statement, set P1 to true (expire this - ** statement only). For DETACH, set it to false (expire all existing - ** statements). - */ - sqlite3VdbeAddOp1(v, OP_Expire, (type==SQLITE_ATTACH)); - } - -attach_end: - sqlite3ExprDelete(db, pFilename); - sqlite3ExprDelete(db, pDbname); - sqlite3ExprDelete(db, pKey); -} - -/* -** Called by the parser to compile a DETACH statement. -** -** DETACH pDbname -*/ -void sqlite3Detach(Parse *pParse, Expr *pDbname){ - static const FuncDef detach_func = { - 1, /* nArg */ - SQLITE_UTF8, /* iPrefEnc */ - 0, /* flags */ - 0, /* pUserData */ - 0, /* pNext */ - detachFunc, /* xFunc */ - 0, /* xStep */ - 0, /* xFinalize */ - "sqlite_detach", /* zName */ - 0, /* pHash */ - 0 /* pDestructor */ - }; - codeAttach(pParse, SQLITE_DETACH, &detach_func, pDbname, 0, 0, pDbname); -} - -/* -** Called by the parser to compile an ATTACH statement. -** -** ATTACH p AS pDbname KEY pKey -*/ -void sqlite3Attach(Parse *pParse, Expr *p, Expr *pDbname, Expr *pKey){ - static const FuncDef attach_func = { - 3, /* nArg */ - SQLITE_UTF8, /* iPrefEnc */ - 0, /* flags */ - 0, /* pUserData */ - 0, /* pNext */ - attachFunc, /* xFunc */ - 0, /* xStep */ - 0, /* xFinalize */ - "sqlite_attach", /* zName */ - 0, /* pHash */ - 0 /* pDestructor */ - }; - codeAttach(pParse, SQLITE_ATTACH, &attach_func, p, p, pDbname, pKey); -} -#endif /* SQLITE_OMIT_ATTACH */ - -/* -** Initialize a DbFixer structure. This routine must be called prior -** to passing the structure to one of the sqliteFixAAAA() routines below. -** -** The return value indicates whether or not fixation is required. TRUE -** means we do need to fix the database references, FALSE means we do not. -*/ -int sqlite3FixInit( - DbFixer *pFix, /* The fixer to be initialized */ - Parse *pParse, /* Error messages will be written here */ - int iDb, /* This is the database that must be used */ - const char *zType, /* "view", "trigger", or "index" */ - const Token *pName /* Name of the view, trigger, or index */ -){ - sqlite3 *db; - - if( NEVER(iDb<0) || iDb==1 ) return 0; - db = pParse->db; - assert( db->nDb>iDb ); - pFix->pParse = pParse; - pFix->zDb = db->aDb[iDb].zName; - pFix->zType = zType; - pFix->pName = pName; - return 1; -} - -/* -** The following set of routines walk through the parse tree and assign -** a specific database to all table references where the database name -** was left unspecified in the original SQL statement. The pFix structure -** must have been initialized by a prior call to sqlite3FixInit(). -** -** These routines are used to make sure that an index, trigger, or -** view in one database does not refer to objects in a different database. -** (Exception: indices, triggers, and views in the TEMP database are -** allowed to refer to anything.) If a reference is explicitly made -** to an object in a different database, an error message is added to -** pParse->zErrMsg and these routines return non-zero. If everything -** checks out, these routines return 0. -*/ -int sqlite3FixSrcList( - DbFixer *pFix, /* Context of the fixation */ - SrcList *pList /* The Source list to check and modify */ -){ - int i; - const char *zDb; - struct SrcList_item *pItem; - - if( NEVER(pList==0) ) return 0; - zDb = pFix->zDb; - for(i=0, pItem=pList->a; inSrc; i++, pItem++){ - if( pItem->zDatabase==0 ){ - pItem->zDatabase = sqlite3DbStrDup(pFix->pParse->db, zDb); - }else if( sqlite3StrICmp(pItem->zDatabase,zDb)!=0 ){ - sqlite3ErrorMsg(pFix->pParse, - "%s %T cannot reference objects in database %s", - pFix->zType, pFix->pName, pItem->zDatabase); - return 1; - } -#if !defined(SQLITE_OMIT_VIEW) || !defined(SQLITE_OMIT_TRIGGER) - if( sqlite3FixSelect(pFix, pItem->pSelect) ) return 1; - if( sqlite3FixExpr(pFix, pItem->pOn) ) return 1; -#endif - } - return 0; -} -#if !defined(SQLITE_OMIT_VIEW) || !defined(SQLITE_OMIT_TRIGGER) -int sqlite3FixSelect( - DbFixer *pFix, /* Context of the fixation */ - Select *pSelect /* The SELECT statement to be fixed to one database */ -){ - while( pSelect ){ - if( sqlite3FixExprList(pFix, pSelect->pEList) ){ - return 1; - } - if( sqlite3FixSrcList(pFix, pSelect->pSrc) ){ - return 1; - } - if( sqlite3FixExpr(pFix, pSelect->pWhere) ){ - return 1; - } - if( sqlite3FixExpr(pFix, pSelect->pHaving) ){ - return 1; - } - pSelect = pSelect->pPrior; - } - return 0; -} -int sqlite3FixExpr( - DbFixer *pFix, /* Context of the fixation */ - Expr *pExpr /* The expression to be fixed to one database */ -){ - while( pExpr ){ - if( ExprHasAnyProperty(pExpr, EP_TokenOnly) ) break; - if( ExprHasProperty(pExpr, EP_xIsSelect) ){ - if( sqlite3FixSelect(pFix, pExpr->x.pSelect) ) return 1; - }else{ - if( sqlite3FixExprList(pFix, pExpr->x.pList) ) return 1; - } - if( sqlite3FixExpr(pFix, pExpr->pRight) ){ - return 1; - } - pExpr = pExpr->pLeft; - } - return 0; -} -int sqlite3FixExprList( - DbFixer *pFix, /* Context of the fixation */ - ExprList *pList /* The expression to be fixed to one database */ -){ - int i; - struct ExprList_item *pItem; - if( pList==0 ) return 0; - for(i=0, pItem=pList->a; inExpr; i++, pItem++){ - if( sqlite3FixExpr(pFix, pItem->pExpr) ){ - return 1; - } - } - return 0; -} -#endif - -#ifndef SQLITE_OMIT_TRIGGER -int sqlite3FixTriggerStep( - DbFixer *pFix, /* Context of the fixation */ - TriggerStep *pStep /* The trigger step be fixed to one database */ -){ - while( pStep ){ - if( sqlite3FixSelect(pFix, pStep->pSelect) ){ - return 1; - } - if( sqlite3FixExpr(pFix, pStep->pWhere) ){ - return 1; - } - if( sqlite3FixExprList(pFix, pStep->pExprList) ){ - return 1; - } - pStep = pStep->pNext; - } - return 0; -} -#endif diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/auth.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/auth.c deleted file mode 100644 index 301a7cea52..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/auth.c +++ /dev/null @@ -1,249 +0,0 @@ -/* -** 2003 January 11 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file contains code used to implement the sqlite3_set_authorizer() -** API. This facility is an optional feature of the library. Embedded -** systems that do not need this facility may omit it by recompiling -** the library with -DSQLITE_OMIT_AUTHORIZATION=1 -*/ -#include "sqliteInt.h" - -/* -** All of the code in this file may be omitted by defining a single -** macro. -*/ -#ifndef SQLITE_OMIT_AUTHORIZATION - -/* -** Set or clear the access authorization function. -** -** The access authorization function is be called during the compilation -** phase to verify that the user has read and/or write access permission on -** various fields of the database. The first argument to the auth function -** is a copy of the 3rd argument to this routine. The second argument -** to the auth function is one of these constants: -** -** SQLITE_CREATE_INDEX -** SQLITE_CREATE_TABLE -** SQLITE_CREATE_TEMP_INDEX -** SQLITE_CREATE_TEMP_TABLE -** SQLITE_CREATE_TEMP_TRIGGER -** SQLITE_CREATE_TEMP_VIEW -** SQLITE_CREATE_TRIGGER -** SQLITE_CREATE_VIEW -** SQLITE_DELETE -** SQLITE_DROP_INDEX -** SQLITE_DROP_TABLE -** SQLITE_DROP_TEMP_INDEX -** SQLITE_DROP_TEMP_TABLE -** SQLITE_DROP_TEMP_TRIGGER -** SQLITE_DROP_TEMP_VIEW -** SQLITE_DROP_TRIGGER -** SQLITE_DROP_VIEW -** SQLITE_INSERT -** SQLITE_PRAGMA -** SQLITE_READ -** SQLITE_SELECT -** SQLITE_TRANSACTION -** SQLITE_UPDATE -** -** The third and fourth arguments to the auth function are the name of -** the table and the column that are being accessed. The auth function -** should return either SQLITE_OK, SQLITE_DENY, or SQLITE_IGNORE. If -** SQLITE_OK is returned, it means that access is allowed. SQLITE_DENY -** means that the SQL statement will never-run - the sqlite3_exec() call -** will return with an error. SQLITE_IGNORE means that the SQL statement -** should run but attempts to read the specified column will return NULL -** and attempts to write the column will be ignored. -** -** Setting the auth function to NULL disables this hook. The default -** setting of the auth function is NULL. -*/ -int sqlite3_set_authorizer( - sqlite3 *db, - int (*xAuth)(void*,int,const char*,const char*,const char*,const char*), - void *pArg -){ - sqlite3_mutex_enter(db->mutex); - db->xAuth = xAuth; - db->pAuthArg = pArg; - sqlite3ExpirePreparedStatements(db); - sqlite3_mutex_leave(db->mutex); - return SQLITE_OK; -} - -/* -** Write an error message into pParse->zErrMsg that explains that the -** user-supplied authorization function returned an illegal value. -*/ -static void sqliteAuthBadReturnCode(Parse *pParse){ - sqlite3ErrorMsg(pParse, "authorizer malfunction"); - pParse->rc = SQLITE_ERROR; -} - -/* -** Invoke the authorization callback for permission to read column zCol from -** table zTab in database zDb. This function assumes that an authorization -** callback has been registered (i.e. that sqlite3.xAuth is not NULL). -** -** If SQLITE_IGNORE is returned and pExpr is not NULL, then pExpr is changed -** to an SQL NULL expression. Otherwise, if pExpr is NULL, then SQLITE_IGNORE -** is treated as SQLITE_DENY. In this case an error is left in pParse. -*/ -int sqlite3AuthReadCol( - Parse *pParse, /* The parser context */ - const char *zTab, /* Table name */ - const char *zCol, /* Column name */ - int iDb /* Index of containing database. */ -){ - sqlite3 *db = pParse->db; /* Database handle */ - char *zDb = db->aDb[iDb].zName; /* Name of attached database */ - int rc; /* Auth callback return code */ - - rc = db->xAuth(db->pAuthArg, SQLITE_READ, zTab,zCol,zDb,pParse->zAuthContext); - if( rc==SQLITE_DENY ){ - if( db->nDb>2 || iDb!=0 ){ - sqlite3ErrorMsg(pParse, "access to %s.%s.%s is prohibited",zDb,zTab,zCol); - }else{ - sqlite3ErrorMsg(pParse, "access to %s.%s is prohibited", zTab, zCol); - } - pParse->rc = SQLITE_AUTH; - }else if( rc!=SQLITE_IGNORE && rc!=SQLITE_OK ){ - sqliteAuthBadReturnCode(pParse); - } - return rc; -} - -/* -** The pExpr should be a TK_COLUMN expression. The table referred to -** is in pTabList or else it is the NEW or OLD table of a trigger. -** Check to see if it is OK to read this particular column. -** -** If the auth function returns SQLITE_IGNORE, change the TK_COLUMN -** instruction into a TK_NULL. If the auth function returns SQLITE_DENY, -** then generate an error. -*/ -void sqlite3AuthRead( - Parse *pParse, /* The parser context */ - Expr *pExpr, /* The expression to check authorization on */ - Schema *pSchema, /* The schema of the expression */ - SrcList *pTabList /* All table that pExpr might refer to */ -){ - sqlite3 *db = pParse->db; - Table *pTab = 0; /* The table being read */ - const char *zCol; /* Name of the column of the table */ - int iSrc; /* Index in pTabList->a[] of table being read */ - int iDb; /* The index of the database the expression refers to */ - int iCol; /* Index of column in table */ - - if( db->xAuth==0 ) return; - iDb = sqlite3SchemaToIndex(pParse->db, pSchema); - if( iDb<0 ){ - /* An attempt to read a column out of a subquery or other - ** temporary table. */ - return; - } - - assert( pExpr->op==TK_COLUMN || pExpr->op==TK_TRIGGER ); - if( pExpr->op==TK_TRIGGER ){ - pTab = pParse->pTriggerTab; - }else{ - assert( pTabList ); - for(iSrc=0; ALWAYS(iSrcnSrc); iSrc++){ - if( pExpr->iTable==pTabList->a[iSrc].iCursor ){ - pTab = pTabList->a[iSrc].pTab; - break; - } - } - } - iCol = pExpr->iColumn; - if( NEVER(pTab==0) ) return; - - if( iCol>=0 ){ - assert( iColnCol ); - zCol = pTab->aCol[iCol].zName; - }else if( pTab->iPKey>=0 ){ - assert( pTab->iPKeynCol ); - zCol = pTab->aCol[pTab->iPKey].zName; - }else{ - zCol = "ROWID"; - } - assert( iDb>=0 && iDbnDb ); - if( SQLITE_IGNORE==sqlite3AuthReadCol(pParse, pTab->zName, zCol, iDb) ){ - pExpr->op = TK_NULL; - } -} - -/* -** Do an authorization check using the code and arguments given. Return -** either SQLITE_OK (zero) or SQLITE_IGNORE or SQLITE_DENY. If SQLITE_DENY -** is returned, then the error count and error message in pParse are -** modified appropriately. -*/ -int sqlite3AuthCheck( - Parse *pParse, - int code, - const char *zArg1, - const char *zArg2, - const char *zArg3 -){ - sqlite3 *db = pParse->db; - int rc; - - /* Don't do any authorization checks if the database is initialising - ** or if the parser is being invoked from within sqlite3_declare_vtab. - */ - if( db->init.busy || IN_DECLARE_VTAB ){ - return SQLITE_OK; - } - - if( db->xAuth==0 ){ - return SQLITE_OK; - } - rc = db->xAuth(db->pAuthArg, code, zArg1, zArg2, zArg3, pParse->zAuthContext); - if( rc==SQLITE_DENY ){ - sqlite3ErrorMsg(pParse, "not authorized"); - pParse->rc = SQLITE_AUTH; - }else if( rc!=SQLITE_OK && rc!=SQLITE_IGNORE ){ - rc = SQLITE_DENY; - sqliteAuthBadReturnCode(pParse); - } - return rc; -} - -/* -** Push an authorization context. After this routine is called, the -** zArg3 argument to authorization callbacks will be zContext until -** popped. Or if pParse==0, this routine is a no-op. -*/ -void sqlite3AuthContextPush( - Parse *pParse, - AuthContext *pContext, - const char *zContext -){ - assert( pParse ); - pContext->pParse = pParse; - pContext->zAuthContext = pParse->zAuthContext; - pParse->zAuthContext = zContext; -} - -/* -** Pop an authorization context that was previously pushed -** by sqlite3AuthContextPush -*/ -void sqlite3AuthContextPop(AuthContext *pContext){ - if( pContext->pParse ){ - pContext->pParse->zAuthContext = pContext->zAuthContext; - pContext->pParse = 0; - } -} - -#endif /* SQLITE_OMIT_AUTHORIZATION */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/backup.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/backup.c deleted file mode 100644 index 12cace3a09..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/backup.c +++ /dev/null @@ -1,716 +0,0 @@ -/* -** 2009 January 28 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file contains the implementation of the sqlite3_backup_XXX() -** API functions and the related features. -*/ -#include "sqliteInt.h" -#include "btreeInt.h" - -/* Macro to find the minimum of two numeric values. -*/ -#ifndef MIN -# define MIN(x,y) ((x)<(y)?(x):(y)) -#endif - -/* -** Structure allocated for each backup operation. -*/ -struct sqlite3_backup { - sqlite3* pDestDb; /* Destination database handle */ - Btree *pDest; /* Destination b-tree file */ - u32 iDestSchema; /* Original schema cookie in destination */ - int bDestLocked; /* True once a write-transaction is open on pDest */ - - Pgno iNext; /* Page number of the next source page to copy */ - sqlite3* pSrcDb; /* Source database handle */ - Btree *pSrc; /* Source b-tree file */ - - int rc; /* Backup process error code */ - - /* These two variables are set by every call to backup_step(). They are - ** read by calls to backup_remaining() and backup_pagecount(). - */ - Pgno nRemaining; /* Number of pages left to copy */ - Pgno nPagecount; /* Total number of pages to copy */ - - int isAttached; /* True once backup has been registered with pager */ - sqlite3_backup *pNext; /* Next backup associated with source pager */ -}; - -/* -** THREAD SAFETY NOTES: -** -** Once it has been created using backup_init(), a single sqlite3_backup -** structure may be accessed via two groups of thread-safe entry points: -** -** * Via the sqlite3_backup_XXX() API function backup_step() and -** backup_finish(). Both these functions obtain the source database -** handle mutex and the mutex associated with the source BtShared -** structure, in that order. -** -** * Via the BackupUpdate() and BackupRestart() functions, which are -** invoked by the pager layer to report various state changes in -** the page cache associated with the source database. The mutex -** associated with the source database BtShared structure will always -** be held when either of these functions are invoked. -** -** The other sqlite3_backup_XXX() API functions, backup_remaining() and -** backup_pagecount() are not thread-safe functions. If they are called -** while some other thread is calling backup_step() or backup_finish(), -** the values returned may be invalid. There is no way for a call to -** BackupUpdate() or BackupRestart() to interfere with backup_remaining() -** or backup_pagecount(). -** -** Depending on the SQLite configuration, the database handles and/or -** the Btree objects may have their own mutexes that require locking. -** Non-sharable Btrees (in-memory databases for example), do not have -** associated mutexes. -*/ - -/* -** Return a pointer corresponding to database zDb (i.e. "main", "temp") -** in connection handle pDb. If such a database cannot be found, return -** a NULL pointer and write an error message to pErrorDb. -** -** If the "temp" database is requested, it may need to be opened by this -** function. If an error occurs while doing so, return 0 and write an -** error message to pErrorDb. -*/ -static Btree *findBtree(sqlite3 *pErrorDb, sqlite3 *pDb, const char *zDb){ - int i = sqlite3FindDbName(pDb, zDb); - - if( i==1 ){ - Parse *pParse; - int rc = 0; - pParse = sqlite3StackAllocZero(pErrorDb, sizeof(*pParse)); - if( pParse==0 ){ - sqlite3Error(pErrorDb, SQLITE_NOMEM, "out of memory"); - rc = SQLITE_NOMEM; - }else{ - pParse->db = pDb; - if( sqlite3OpenTempDatabase(pParse) ){ - sqlite3Error(pErrorDb, pParse->rc, "%s", pParse->zErrMsg); - rc = SQLITE_ERROR; - } - sqlite3DbFree(pErrorDb, pParse->zErrMsg); - sqlite3StackFree(pErrorDb, pParse); - } - if( rc ){ - return 0; - } - } - - if( i<0 ){ - sqlite3Error(pErrorDb, SQLITE_ERROR, "unknown database %s", zDb); - return 0; - } - - return pDb->aDb[i].pBt; -} - -/* -** Attempt to set the page size of the destination to match the page size -** of the source. -*/ -static int setDestPgsz(sqlite3_backup *p){ - int rc; - rc = sqlite3BtreeSetPageSize(p->pDest,sqlite3BtreeGetPageSize(p->pSrc),-1,0); - return rc; -} - -/* -** Create an sqlite3_backup process to copy the contents of zSrcDb from -** connection handle pSrcDb to zDestDb in pDestDb. If successful, return -** a pointer to the new sqlite3_backup object. -** -** If an error occurs, NULL is returned and an error code and error message -** stored in database handle pDestDb. -*/ -sqlite3_backup *sqlite3_backup_init( - sqlite3* pDestDb, /* Database to write to */ - const char *zDestDb, /* Name of database within pDestDb */ - sqlite3* pSrcDb, /* Database connection to read from */ - const char *zSrcDb /* Name of database within pSrcDb */ -){ - sqlite3_backup *p; /* Value to return */ - - /* Lock the source database handle. The destination database - ** handle is not locked in this routine, but it is locked in - ** sqlite3_backup_step(). The user is required to ensure that no - ** other thread accesses the destination handle for the duration - ** of the backup operation. Any attempt to use the destination - ** database connection while a backup is in progress may cause - ** a malfunction or a deadlock. - */ - sqlite3_mutex_enter(pSrcDb->mutex); - sqlite3_mutex_enter(pDestDb->mutex); - - if( pSrcDb==pDestDb ){ - sqlite3Error( - pDestDb, SQLITE_ERROR, "source and destination must be distinct" - ); - p = 0; - }else { - /* Allocate space for a new sqlite3_backup object... - ** EVIDENCE-OF: R-64852-21591 The sqlite3_backup object is created by a - ** call to sqlite3_backup_init() and is destroyed by a call to - ** sqlite3_backup_finish(). */ - p = (sqlite3_backup *)sqlite3_malloc(sizeof(sqlite3_backup)); - if( !p ){ - sqlite3Error(pDestDb, SQLITE_NOMEM, 0); - } - } - - /* If the allocation succeeded, populate the new object. */ - if( p ){ - memset(p, 0, sizeof(sqlite3_backup)); - p->pSrc = findBtree(pDestDb, pSrcDb, zSrcDb); - p->pDest = findBtree(pDestDb, pDestDb, zDestDb); - p->pDestDb = pDestDb; - p->pSrcDb = pSrcDb; - p->iNext = 1; - p->isAttached = 0; - - if( 0==p->pSrc || 0==p->pDest || setDestPgsz(p)==SQLITE_NOMEM ){ - /* One (or both) of the named databases did not exist or an OOM - ** error was hit. The error has already been written into the - ** pDestDb handle. All that is left to do here is free the - ** sqlite3_backup structure. - */ - sqlite3_free(p); - p = 0; - } - } - if( p ){ - p->pSrc->nBackup++; - } - - sqlite3_mutex_leave(pDestDb->mutex); - sqlite3_mutex_leave(pSrcDb->mutex); - return p; -} - -/* -** Argument rc is an SQLite error code. Return true if this error is -** considered fatal if encountered during a backup operation. All errors -** are considered fatal except for SQLITE_BUSY and SQLITE_LOCKED. -*/ -static int isFatalError(int rc){ - return (rc!=SQLITE_OK && rc!=SQLITE_BUSY && ALWAYS(rc!=SQLITE_LOCKED)); -} - -/* -** Parameter zSrcData points to a buffer containing the data for -** page iSrcPg from the source database. Copy this data into the -** destination database. -*/ -static int backupOnePage(sqlite3_backup *p, Pgno iSrcPg, const u8 *zSrcData){ - Pager * const pDestPager = sqlite3BtreePager(p->pDest); - const int nSrcPgsz = sqlite3BtreeGetPageSize(p->pSrc); - int nDestPgsz = sqlite3BtreeGetPageSize(p->pDest); - const int nCopy = MIN(nSrcPgsz, nDestPgsz); - const i64 iEnd = (i64)iSrcPg*(i64)nSrcPgsz; -#ifdef SQLITE_HAS_CODEC - int nSrcReserve = sqlite3BtreeGetReserve(p->pSrc); - int nDestReserve = sqlite3BtreeGetReserve(p->pDest); -#endif - - int rc = SQLITE_OK; - i64 iOff; - - assert( p->bDestLocked ); - assert( !isFatalError(p->rc) ); - assert( iSrcPg!=PENDING_BYTE_PAGE(p->pSrc->pBt) ); - assert( zSrcData ); - - /* Catch the case where the destination is an in-memory database and the - ** page sizes of the source and destination differ. - */ - if( nSrcPgsz!=nDestPgsz && sqlite3PagerIsMemdb(pDestPager) ){ - rc = SQLITE_READONLY; - } - -#ifdef SQLITE_HAS_CODEC - /* Backup is not possible if the page size of the destination is changing - ** and a codec is in use. - */ - if( nSrcPgsz!=nDestPgsz && sqlite3PagerGetCodec(pDestPager)!=0 ){ - rc = SQLITE_READONLY; - } - - /* Backup is not possible if the number of bytes of reserve space differ - ** between source and destination. If there is a difference, try to - ** fix the destination to agree with the source. If that is not possible, - ** then the backup cannot proceed. - */ - if( nSrcReserve!=nDestReserve ){ - u32 newPgsz = nSrcPgsz; - rc = sqlite3PagerSetPagesize(pDestPager, &newPgsz, nSrcReserve); - if( rc==SQLITE_OK && newPgsz!=nSrcPgsz ) rc = SQLITE_READONLY; - } -#endif - - /* This loop runs once for each destination page spanned by the source - ** page. For each iteration, variable iOff is set to the byte offset - ** of the destination page. - */ - for(iOff=iEnd-(i64)nSrcPgsz; rc==SQLITE_OK && iOffpDest->pBt) ) continue; - if( SQLITE_OK==(rc = sqlite3PagerGet(pDestPager, iDest, &pDestPg)) - && SQLITE_OK==(rc = sqlite3PagerWrite(pDestPg)) - ){ - const u8 *zIn = &zSrcData[iOff%nSrcPgsz]; - u8 *zDestData = sqlite3PagerGetData(pDestPg); - u8 *zOut = &zDestData[iOff%nDestPgsz]; - - /* Copy the data from the source page into the destination page. - ** Then clear the Btree layer MemPage.isInit flag. Both this module - ** and the pager code use this trick (clearing the first byte - ** of the page 'extra' space to invalidate the Btree layers - ** cached parse of the page). MemPage.isInit is marked - ** "MUST BE FIRST" for this purpose. - */ - memcpy(zOut, zIn, nCopy); - ((u8 *)sqlite3PagerGetExtra(pDestPg))[0] = 0; - } - sqlite3PagerUnref(pDestPg); - } - - return rc; -} - -/* -** If pFile is currently larger than iSize bytes, then truncate it to -** exactly iSize bytes. If pFile is not larger than iSize bytes, then -** this function is a no-op. -** -** Return SQLITE_OK if everything is successful, or an SQLite error -** code if an error occurs. -*/ -static int backupTruncateFile(sqlite3_file *pFile, i64 iSize){ - i64 iCurrent; - int rc = sqlite3OsFileSize(pFile, &iCurrent); - if( rc==SQLITE_OK && iCurrent>iSize ){ - rc = sqlite3OsTruncate(pFile, iSize); - } - return rc; -} - -/* -** Register this backup object with the associated source pager for -** callbacks when pages are changed or the cache invalidated. -*/ -static void attachBackupObject(sqlite3_backup *p){ - sqlite3_backup **pp; - assert( sqlite3BtreeHoldsMutex(p->pSrc) ); - pp = sqlite3PagerBackupPtr(sqlite3BtreePager(p->pSrc)); - p->pNext = *pp; - *pp = p; - p->isAttached = 1; -} - -/* -** Copy nPage pages from the source b-tree to the destination. -*/ -int sqlite3_backup_step(sqlite3_backup *p, int nPage){ - int rc; - int destMode; /* Destination journal mode */ - int pgszSrc = 0; /* Source page size */ - int pgszDest = 0; /* Destination page size */ - - sqlite3_mutex_enter(p->pSrcDb->mutex); - sqlite3BtreeEnter(p->pSrc); - if( p->pDestDb ){ - sqlite3_mutex_enter(p->pDestDb->mutex); - } - - rc = p->rc; - if( !isFatalError(rc) ){ - Pager * const pSrcPager = sqlite3BtreePager(p->pSrc); /* Source pager */ - Pager * const pDestPager = sqlite3BtreePager(p->pDest); /* Dest pager */ - int ii; /* Iterator variable */ - int nSrcPage = -1; /* Size of source db in pages */ - int bCloseTrans = 0; /* True if src db requires unlocking */ - - /* If the source pager is currently in a write-transaction, return - ** SQLITE_BUSY immediately. - */ - if( p->pDestDb && p->pSrc->pBt->inTransaction==TRANS_WRITE ){ - rc = SQLITE_BUSY; - }else{ - rc = SQLITE_OK; - } - - /* Lock the destination database, if it is not locked already. */ - if( SQLITE_OK==rc && p->bDestLocked==0 - && SQLITE_OK==(rc = sqlite3BtreeBeginTrans(p->pDest, 2)) - ){ - p->bDestLocked = 1; - sqlite3BtreeGetMeta(p->pDest, BTREE_SCHEMA_VERSION, &p->iDestSchema); - } - - /* If there is no open read-transaction on the source database, open - ** one now. If a transaction is opened here, then it will be closed - ** before this function exits. - */ - if( rc==SQLITE_OK && 0==sqlite3BtreeIsInReadTrans(p->pSrc) ){ - rc = sqlite3BtreeBeginTrans(p->pSrc, 0); - bCloseTrans = 1; - } - - /* Do not allow backup if the destination database is in WAL mode - ** and the page sizes are different between source and destination */ - pgszSrc = sqlite3BtreeGetPageSize(p->pSrc); - pgszDest = sqlite3BtreeGetPageSize(p->pDest); - destMode = sqlite3PagerGetJournalMode(sqlite3BtreePager(p->pDest)); - if( SQLITE_OK==rc && destMode==PAGER_JOURNALMODE_WAL && pgszSrc!=pgszDest ){ - rc = SQLITE_READONLY; - } - - /* Now that there is a read-lock on the source database, query the - ** source pager for the number of pages in the database. - */ - nSrcPage = (int)sqlite3BtreeLastPage(p->pSrc); - assert( nSrcPage>=0 ); - for(ii=0; (nPage<0 || iiiNext<=(Pgno)nSrcPage && !rc; ii++){ - const Pgno iSrcPg = p->iNext; /* Source page number */ - if( iSrcPg!=PENDING_BYTE_PAGE(p->pSrc->pBt) ){ - DbPage *pSrcPg; /* Source page object */ - rc = sqlite3PagerGet(pSrcPager, iSrcPg, &pSrcPg); - if( rc==SQLITE_OK ){ - rc = backupOnePage(p, iSrcPg, sqlite3PagerGetData(pSrcPg)); - sqlite3PagerUnref(pSrcPg); - } - } - p->iNext++; - } - if( rc==SQLITE_OK ){ - p->nPagecount = nSrcPage; - p->nRemaining = nSrcPage+1-p->iNext; - if( p->iNext>(Pgno)nSrcPage ){ - rc = SQLITE_DONE; - }else if( !p->isAttached ){ - attachBackupObject(p); - } - } - - /* Update the schema version field in the destination database. This - ** is to make sure that the schema-version really does change in - ** the case where the source and destination databases have the - ** same schema version. - */ - if( rc==SQLITE_DONE ){ - rc = sqlite3BtreeUpdateMeta(p->pDest,1,p->iDestSchema+1); - if( rc==SQLITE_OK ){ - if( p->pDestDb ){ - sqlite3ResetInternalSchema(p->pDestDb, -1); - } - if( destMode==PAGER_JOURNALMODE_WAL ){ - rc = sqlite3BtreeSetVersion(p->pDest, 2); - } - } - if( rc==SQLITE_OK ){ - int nDestTruncate; - /* Set nDestTruncate to the final number of pages in the destination - ** database. The complication here is that the destination page - ** size may be different to the source page size. - ** - ** If the source page size is smaller than the destination page size, - ** round up. In this case the call to sqlite3OsTruncate() below will - ** fix the size of the file. However it is important to call - ** sqlite3PagerTruncateImage() here so that any pages in the - ** destination file that lie beyond the nDestTruncate page mark are - ** journalled by PagerCommitPhaseOne() before they are destroyed - ** by the file truncation. - */ - assert( pgszSrc==sqlite3BtreeGetPageSize(p->pSrc) ); - assert( pgszDest==sqlite3BtreeGetPageSize(p->pDest) ); - if( pgszSrcpDest->pBt) ){ - nDestTruncate--; - } - }else{ - nDestTruncate = nSrcPage * (pgszSrc/pgszDest); - } - sqlite3PagerTruncateImage(pDestPager, nDestTruncate); - - if( pgszSrc= iSize || ( - nDestTruncate==(int)(PENDING_BYTE_PAGE(p->pDest->pBt)-1) - && iSize>=PENDING_BYTE && iSize<=PENDING_BYTE+pgszDest - )); - - /* This call ensures that all data required to recreate the original - ** database has been stored in the journal for pDestPager and the - ** journal synced to disk. So at this point we may safely modify - ** the database file in any way, knowing that if a power failure - ** occurs, the original database will be reconstructed from the - ** journal file. */ - rc = sqlite3PagerCommitPhaseOne(pDestPager, 0, 1); - - /* Write the extra pages and truncate the database file as required */ - iEnd = MIN(PENDING_BYTE + pgszDest, iSize); - for( - iOff=PENDING_BYTE+pgszSrc; - rc==SQLITE_OK && iOffpDest, 0)) - ){ - rc = SQLITE_DONE; - } - } - } - - /* If bCloseTrans is true, then this function opened a read transaction - ** on the source database. Close the read transaction here. There is - ** no need to check the return values of the btree methods here, as - ** "committing" a read-only transaction cannot fail. - */ - if( bCloseTrans ){ - TESTONLY( int rc2 ); - TESTONLY( rc2 = ) sqlite3BtreeCommitPhaseOne(p->pSrc, 0); - TESTONLY( rc2 |= ) sqlite3BtreeCommitPhaseTwo(p->pSrc, 0); - assert( rc2==SQLITE_OK ); - } - - if( rc==SQLITE_IOERR_NOMEM ){ - rc = SQLITE_NOMEM; - } - p->rc = rc; - } - if( p->pDestDb ){ - sqlite3_mutex_leave(p->pDestDb->mutex); - } - sqlite3BtreeLeave(p->pSrc); - sqlite3_mutex_leave(p->pSrcDb->mutex); - return rc; -} - -/* -** Release all resources associated with an sqlite3_backup* handle. -*/ -int sqlite3_backup_finish(sqlite3_backup *p){ - sqlite3_backup **pp; /* Ptr to head of pagers backup list */ - MUTEX_LOGIC( sqlite3_mutex *mutex; ) /* Mutex to protect source database */ - int rc; /* Value to return */ - - /* Enter the mutexes */ - if( p==0 ) return SQLITE_OK; - sqlite3_mutex_enter(p->pSrcDb->mutex); - sqlite3BtreeEnter(p->pSrc); - MUTEX_LOGIC( mutex = p->pSrcDb->mutex; ) - if( p->pDestDb ){ - sqlite3_mutex_enter(p->pDestDb->mutex); - } - - /* Detach this backup from the source pager. */ - if( p->pDestDb ){ - p->pSrc->nBackup--; - } - if( p->isAttached ){ - pp = sqlite3PagerBackupPtr(sqlite3BtreePager(p->pSrc)); - while( *pp!=p ){ - pp = &(*pp)->pNext; - } - *pp = p->pNext; - } - - /* If a transaction is still open on the Btree, roll it back. */ - sqlite3BtreeRollback(p->pDest); - - /* Set the error code of the destination database handle. */ - rc = (p->rc==SQLITE_DONE) ? SQLITE_OK : p->rc; - sqlite3Error(p->pDestDb, rc, 0); - - /* Exit the mutexes and free the backup context structure. */ - if( p->pDestDb ){ - sqlite3_mutex_leave(p->pDestDb->mutex); - } - sqlite3BtreeLeave(p->pSrc); - if( p->pDestDb ){ - /* EVIDENCE-OF: R-64852-21591 The sqlite3_backup object is created by a - ** call to sqlite3_backup_init() and is destroyed by a call to - ** sqlite3_backup_finish(). */ - sqlite3_free(p); - } - sqlite3_mutex_leave(mutex); - return rc; -} - -/* -** Return the number of pages still to be backed up as of the most recent -** call to sqlite3_backup_step(). -*/ -int sqlite3_backup_remaining(sqlite3_backup *p){ - return p->nRemaining; -} - -/* -** Return the total number of pages in the source database as of the most -** recent call to sqlite3_backup_step(). -*/ -int sqlite3_backup_pagecount(sqlite3_backup *p){ - return p->nPagecount; -} - -/* -** This function is called after the contents of page iPage of the -** source database have been modified. If page iPage has already been -** copied into the destination database, then the data written to the -** destination is now invalidated. The destination copy of iPage needs -** to be updated with the new data before the backup operation is -** complete. -** -** It is assumed that the mutex associated with the BtShared object -** corresponding to the source database is held when this function is -** called. -*/ -void sqlite3BackupUpdate(sqlite3_backup *pBackup, Pgno iPage, const u8 *aData){ - sqlite3_backup *p; /* Iterator variable */ - for(p=pBackup; p; p=p->pNext){ - assert( sqlite3_mutex_held(p->pSrc->pBt->mutex) ); - if( !isFatalError(p->rc) && iPageiNext ){ - /* The backup process p has already copied page iPage. But now it - ** has been modified by a transaction on the source pager. Copy - ** the new data into the backup. - */ - int rc; - assert( p->pDestDb ); - sqlite3_mutex_enter(p->pDestDb->mutex); - rc = backupOnePage(p, iPage, aData); - sqlite3_mutex_leave(p->pDestDb->mutex); - assert( rc!=SQLITE_BUSY && rc!=SQLITE_LOCKED ); - if( rc!=SQLITE_OK ){ - p->rc = rc; - } - } - } -} - -/* -** Restart the backup process. This is called when the pager layer -** detects that the database has been modified by an external database -** connection. In this case there is no way of knowing which of the -** pages that have been copied into the destination database are still -** valid and which are not, so the entire process needs to be restarted. -** -** It is assumed that the mutex associated with the BtShared object -** corresponding to the source database is held when this function is -** called. -*/ -void sqlite3BackupRestart(sqlite3_backup *pBackup){ - sqlite3_backup *p; /* Iterator variable */ - for(p=pBackup; p; p=p->pNext){ - assert( sqlite3_mutex_held(p->pSrc->pBt->mutex) ); - p->iNext = 1; - } -} - -#ifndef SQLITE_OMIT_VACUUM -/* -** Copy the complete content of pBtFrom into pBtTo. A transaction -** must be active for both files. -** -** The size of file pTo may be reduced by this operation. If anything -** goes wrong, the transaction on pTo is rolled back. If successful, the -** transaction is committed before returning. -*/ -int sqlite3BtreeCopyFile(Btree *pTo, Btree *pFrom){ - int rc; - sqlite3_file *pFd; /* File descriptor for database pTo */ - sqlite3_backup b; - sqlite3BtreeEnter(pTo); - sqlite3BtreeEnter(pFrom); - - assert( sqlite3BtreeIsInTrans(pTo) ); - pFd = sqlite3PagerFile(sqlite3BtreePager(pTo)); - if( pFd->pMethods ){ - i64 nByte = sqlite3BtreeGetPageSize(pFrom)*(i64)sqlite3BtreeLastPage(pFrom); - sqlite3OsFileControl(pFd, SQLITE_FCNTL_OVERWRITE, &nByte); - } - - /* Set up an sqlite3_backup object. sqlite3_backup.pDestDb must be set - ** to 0. This is used by the implementations of sqlite3_backup_step() - ** and sqlite3_backup_finish() to detect that they are being called - ** from this function, not directly by the user. - */ - memset(&b, 0, sizeof(b)); - b.pSrcDb = pFrom->db; - b.pSrc = pFrom; - b.pDest = pTo; - b.iNext = 1; - - /* 0x7FFFFFFF is the hard limit for the number of pages in a database - ** file. By passing this as the number of pages to copy to - ** sqlite3_backup_step(), we can guarantee that the copy finishes - ** within a single call (unless an error occurs). The assert() statement - ** checks this assumption - (p->rc) should be set to either SQLITE_DONE - ** or an error code. - */ - sqlite3_backup_step(&b, 0x7FFFFFFF); - assert( b.rc!=SQLITE_OK ); - rc = sqlite3_backup_finish(&b); - if( rc==SQLITE_OK ){ - pTo->pBt->pageSizeFixed = 0; - }else{ - sqlite3PagerClearCache(sqlite3BtreePager(b.pDest)); - } - - assert( sqlite3BtreeIsInTrans(pTo)==0 ); - sqlite3BtreeLeave(pFrom); - sqlite3BtreeLeave(pTo); - return rc; -} -#endif /* SQLITE_OMIT_VACUUM */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/bitvec.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/bitvec.c deleted file mode 100644 index 7a7d71761f..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/bitvec.c +++ /dev/null @@ -1,408 +0,0 @@ -/* -** 2008 February 16 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file implements an object that represents a fixed-length -** bitmap. Bits are numbered starting with 1. -** -** A bitmap is used to record which pages of a database file have been -** journalled during a transaction, or which pages have the "dont-write" -** property. Usually only a few pages are meet either condition. -** So the bitmap is usually sparse and has low cardinality. -** But sometimes (for example when during a DROP of a large table) most -** or all of the pages in a database can get journalled. In those cases, -** the bitmap becomes dense with high cardinality. The algorithm needs -** to handle both cases well. -** -** The size of the bitmap is fixed when the object is created. -** -** All bits are clear when the bitmap is created. Individual bits -** may be set or cleared one at a time. -** -** Test operations are about 100 times more common that set operations. -** Clear operations are exceedingly rare. There are usually between -** 5 and 500 set operations per Bitvec object, though the number of sets can -** sometimes grow into tens of thousands or larger. The size of the -** Bitvec object is the number of pages in the database file at the -** start of a transaction, and is thus usually less than a few thousand, -** but can be as large as 2 billion for a really big database. -*/ -#include "sqliteInt.h" - -/* Size of the Bitvec structure in bytes. */ -#define BITVEC_SZ 512 - -/* Round the union size down to the nearest pointer boundary, since that's how -** it will be aligned within the Bitvec struct. */ -#define BITVEC_USIZE (((BITVEC_SZ-(3*sizeof(u32)))/sizeof(Bitvec*))*sizeof(Bitvec*)) - -/* Type of the array "element" for the bitmap representation. -** Should be a power of 2, and ideally, evenly divide into BITVEC_USIZE. -** Setting this to the "natural word" size of your CPU may improve -** performance. */ -#define BITVEC_TELEM u8 -/* Size, in bits, of the bitmap element. */ -#define BITVEC_SZELEM 8 -/* Number of elements in a bitmap array. */ -#define BITVEC_NELEM (BITVEC_USIZE/sizeof(BITVEC_TELEM)) -/* Number of bits in the bitmap array. */ -#define BITVEC_NBIT (BITVEC_NELEM*BITVEC_SZELEM) - -/* Number of u32 values in hash table. */ -#define BITVEC_NINT (BITVEC_USIZE/sizeof(u32)) -/* Maximum number of entries in hash table before -** sub-dividing and re-hashing. */ -#define BITVEC_MXHASH (BITVEC_NINT/2) -/* Hashing function for the aHash representation. -** Empirical testing showed that the *37 multiplier -** (an arbitrary prime)in the hash function provided -** no fewer collisions than the no-op *1. */ -#define BITVEC_HASH(X) (((X)*1)%BITVEC_NINT) - -#define BITVEC_NPTR (BITVEC_USIZE/sizeof(Bitvec *)) - - -/* -** A bitmap is an instance of the following structure. -** -** This bitmap records the existance of zero or more bits -** with values between 1 and iSize, inclusive. -** -** There are three possible representations of the bitmap. -** If iSize<=BITVEC_NBIT, then Bitvec.u.aBitmap[] is a straight -** bitmap. The least significant bit is bit 1. -** -** If iSize>BITVEC_NBIT and iDivisor==0 then Bitvec.u.aHash[] is -** a hash table that will hold up to BITVEC_MXHASH distinct values. -** -** Otherwise, the value i is redirected into one of BITVEC_NPTR -** sub-bitmaps pointed to by Bitvec.u.apSub[]. Each subbitmap -** handles up to iDivisor separate values of i. apSub[0] holds -** values between 1 and iDivisor. apSub[1] holds values between -** iDivisor+1 and 2*iDivisor. apSub[N] holds values between -** N*iDivisor+1 and (N+1)*iDivisor. Each subbitmap is normalized -** to hold deal with values between 1 and iDivisor. -*/ -struct Bitvec { - u32 iSize; /* Maximum bit index. Max iSize is 4,294,967,296. */ - u32 nSet; /* Number of bits that are set - only valid for aHash - ** element. Max is BITVEC_NINT. For BITVEC_SZ of 512, - ** this would be 125. */ - u32 iDivisor; /* Number of bits handled by each apSub[] entry. */ - /* Should >=0 for apSub element. */ - /* Max iDivisor is max(u32) / BITVEC_NPTR + 1. */ - /* For a BITVEC_SZ of 512, this would be 34,359,739. */ - union { - BITVEC_TELEM aBitmap[BITVEC_NELEM]; /* Bitmap representation */ - u32 aHash[BITVEC_NINT]; /* Hash table representation */ - Bitvec *apSub[BITVEC_NPTR]; /* Recursive representation */ - } u; -}; - -/* -** Create a new bitmap object able to handle bits between 0 and iSize, -** inclusive. Return a pointer to the new object. Return NULL if -** malloc fails. -*/ -Bitvec *sqlite3BitvecCreate(u32 iSize){ - Bitvec *p; - assert( sizeof(*p)==BITVEC_SZ ); - p = sqlite3MallocZero( sizeof(*p) ); - if( p ){ - p->iSize = iSize; - } - return p; -} - -/* -** Check to see if the i-th bit is set. Return true or false. -** If p is NULL (if the bitmap has not been created) or if -** i is out of range, then return false. -*/ -int sqlite3BitvecTest(Bitvec *p, u32 i){ - if( p==0 ) return 0; - if( i>p->iSize || i==0 ) return 0; - i--; - while( p->iDivisor ){ - u32 bin = i/p->iDivisor; - i = i%p->iDivisor; - p = p->u.apSub[bin]; - if (!p) { - return 0; - } - } - if( p->iSize<=BITVEC_NBIT ){ - return (p->u.aBitmap[i/BITVEC_SZELEM] & (1<<(i&(BITVEC_SZELEM-1))))!=0; - } else{ - u32 h = BITVEC_HASH(i++); - while( p->u.aHash[h] ){ - if( p->u.aHash[h]==i ) return 1; - h = (h+1) % BITVEC_NINT; - } - return 0; - } -} - -/* -** Set the i-th bit. Return 0 on success and an error code if -** anything goes wrong. -** -** This routine might cause sub-bitmaps to be allocated. Failing -** to get the memory needed to hold the sub-bitmap is the only -** that can go wrong with an insert, assuming p and i are valid. -** -** The calling function must ensure that p is a valid Bitvec object -** and that the value for "i" is within range of the Bitvec object. -** Otherwise the behavior is undefined. -*/ -int sqlite3BitvecSet(Bitvec *p, u32 i){ - u32 h; - if( p==0 ) return SQLITE_OK; - assert( i>0 ); - assert( i<=p->iSize ); - i--; - while((p->iSize > BITVEC_NBIT) && p->iDivisor) { - u32 bin = i/p->iDivisor; - i = i%p->iDivisor; - if( p->u.apSub[bin]==0 ){ - p->u.apSub[bin] = sqlite3BitvecCreate( p->iDivisor ); - if( p->u.apSub[bin]==0 ) return SQLITE_NOMEM; - } - p = p->u.apSub[bin]; - } - if( p->iSize<=BITVEC_NBIT ){ - p->u.aBitmap[i/BITVEC_SZELEM] |= 1 << (i&(BITVEC_SZELEM-1)); - return SQLITE_OK; - } - h = BITVEC_HASH(i++); - /* if there wasn't a hash collision, and this doesn't */ - /* completely fill the hash, then just add it without */ - /* worring about sub-dividing and re-hashing. */ - if( !p->u.aHash[h] ){ - if (p->nSet<(BITVEC_NINT-1)) { - goto bitvec_set_end; - } else { - goto bitvec_set_rehash; - } - } - /* there was a collision, check to see if it's already */ - /* in hash, if not, try to find a spot for it */ - do { - if( p->u.aHash[h]==i ) return SQLITE_OK; - h++; - if( h>=BITVEC_NINT ) h = 0; - } while( p->u.aHash[h] ); - /* we didn't find it in the hash. h points to the first */ - /* available free spot. check to see if this is going to */ - /* make our hash too "full". */ -bitvec_set_rehash: - if( p->nSet>=BITVEC_MXHASH ){ - unsigned int j; - int rc; - u32 *aiValues = sqlite3StackAllocRaw(0, sizeof(p->u.aHash)); - if( aiValues==0 ){ - return SQLITE_NOMEM; - }else{ - memcpy(aiValues, p->u.aHash, sizeof(p->u.aHash)); - memset(p->u.apSub, 0, sizeof(p->u.apSub)); - p->iDivisor = (p->iSize + BITVEC_NPTR - 1)/BITVEC_NPTR; - rc = sqlite3BitvecSet(p, i); - for(j=0; jnSet++; - p->u.aHash[h] = i; - return SQLITE_OK; -} - -/* -** Clear the i-th bit. -** -** pBuf must be a pointer to at least BITVEC_SZ bytes of temporary storage -** that BitvecClear can use to rebuilt its hash table. -*/ -void sqlite3BitvecClear(Bitvec *p, u32 i, void *pBuf){ - if( p==0 ) return; - assert( i>0 ); - i--; - while( p->iDivisor ){ - u32 bin = i/p->iDivisor; - i = i%p->iDivisor; - p = p->u.apSub[bin]; - if (!p) { - return; - } - } - if( p->iSize<=BITVEC_NBIT ){ - p->u.aBitmap[i/BITVEC_SZELEM] &= ~(1 << (i&(BITVEC_SZELEM-1))); - }else{ - unsigned int j; - u32 *aiValues = pBuf; - memcpy(aiValues, p->u.aHash, sizeof(p->u.aHash)); - memset(p->u.aHash, 0, sizeof(p->u.aHash)); - p->nSet = 0; - for(j=0; jnSet++; - while( p->u.aHash[h] ){ - h++; - if( h>=BITVEC_NINT ) h = 0; - } - p->u.aHash[h] = aiValues[j]; - } - } - } -} - -/* -** Destroy a bitmap object. Reclaim all memory used. -*/ -void sqlite3BitvecDestroy(Bitvec *p){ - if( p==0 ) return; - if( p->iDivisor ){ - unsigned int i; - for(i=0; iu.apSub[i]); - } - } - sqlite3_free(p); -} - -/* -** Return the value of the iSize parameter specified when Bitvec *p -** was created. -*/ -u32 sqlite3BitvecSize(Bitvec *p){ - return p->iSize; -} - -#ifndef SQLITE_OMIT_BUILTIN_TEST -/* -** Let V[] be an array of unsigned characters sufficient to hold -** up to N bits. Let I be an integer between 0 and N. 0<=I>3] |= (1<<(I&7)) -#define CLEARBIT(V,I) V[I>>3] &= ~(1<<(I&7)) -#define TESTBIT(V,I) (V[I>>3]&(1<<(I&7)))!=0 - -/* -** This routine runs an extensive test of the Bitvec code. -** -** The input is an array of integers that acts as a program -** to test the Bitvec. The integers are opcodes followed -** by 0, 1, or 3 operands, depending on the opcode. Another -** opcode follows immediately after the last operand. -** -** There are 6 opcodes numbered from 0 through 5. 0 is the -** "halt" opcode and causes the test to end. -** -** 0 Halt and return the number of errors -** 1 N S X Set N bits beginning with S and incrementing by X -** 2 N S X Clear N bits beginning with S and incrementing by X -** 3 N Set N randomly chosen bits -** 4 N Clear N randomly chosen bits -** 5 N S X Set N bits from S increment X in array only, not in bitvec -** -** The opcodes 1 through 4 perform set and clear operations are performed -** on both a Bitvec object and on a linear array of bits obtained from malloc. -** Opcode 5 works on the linear array only, not on the Bitvec. -** Opcode 5 is used to deliberately induce a fault in order to -** confirm that error detection works. -** -** At the conclusion of the test the linear array is compared -** against the Bitvec object. If there are any differences, -** an error is returned. If they are the same, zero is returned. -** -** If a memory allocation error occurs, return -1. -*/ -int sqlite3BitvecBuiltinTest(int sz, int *aOp){ - Bitvec *pBitvec = 0; - unsigned char *pV = 0; - int rc = -1; - int i, nx, pc, op; - void *pTmpSpace; - - /* Allocate the Bitvec to be tested and a linear array of - ** bits to act as the reference */ - pBitvec = sqlite3BitvecCreate( sz ); - pV = sqlite3_malloc( (sz+7)/8 + 1 ); - pTmpSpace = sqlite3_malloc(BITVEC_SZ); - if( pBitvec==0 || pV==0 || pTmpSpace==0 ) goto bitvec_end; - memset(pV, 0, (sz+7)/8 + 1); - - /* NULL pBitvec tests */ - sqlite3BitvecSet(0, 1); - sqlite3BitvecClear(0, 1, pTmpSpace); - - /* Run the program */ - pc = 0; - while( (op = aOp[pc])!=0 ){ - switch( op ){ - case 1: - case 2: - case 5: { - nx = 4; - i = aOp[pc+2] - 1; - aOp[pc+2] += aOp[pc+3]; - break; - } - case 3: - case 4: - default: { - nx = 2; - sqlite3_randomness(sizeof(i), &i); - break; - } - } - if( (--aOp[pc+1]) > 0 ) nx = 0; - pc += nx; - i = (i & 0x7fffffff)%sz; - if( (op & 1)!=0 ){ - SETBIT(pV, (i+1)); - if( op!=5 ){ - if( sqlite3BitvecSet(pBitvec, i+1) ) goto bitvec_end; - } - }else{ - CLEARBIT(pV, (i+1)); - sqlite3BitvecClear(pBitvec, i+1, pTmpSpace); - } - } - - /* Test to make sure the linear array exactly matches the - ** Bitvec object. Start with the assumption that they do - ** match (rc==0). Change rc to non-zero if a discrepancy - ** is found. - */ - rc = sqlite3BitvecTest(0,0) + sqlite3BitvecTest(pBitvec, sz+1) - + sqlite3BitvecTest(pBitvec, 0) - + (sqlite3BitvecSize(pBitvec) - sz); - for(i=1; i<=sz; i++){ - if( (TESTBIT(pV,i))!=sqlite3BitvecTest(pBitvec,i) ){ - rc = i; - break; - } - } - - /* Free allocated structure */ -bitvec_end: - sqlite3_free(pTmpSpace); - sqlite3_free(pV); - sqlite3BitvecDestroy(pBitvec); - return rc; -} -#endif /* SQLITE_OMIT_BUILTIN_TEST */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/btmutex.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/btmutex.c deleted file mode 100644 index acc6b216af..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/btmutex.c +++ /dev/null @@ -1,287 +0,0 @@ -/* -** 2007 August 27 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** -** This file contains code used to implement mutexes on Btree objects. -** This code really belongs in btree.c. But btree.c is getting too -** big and we want to break it down some. This packaged seemed like -** a good breakout. -*/ -#include "btreeInt.h" -#ifndef SQLITE_OMIT_SHARED_CACHE -#if SQLITE_THREADSAFE - -/* -** Obtain the BtShared mutex associated with B-Tree handle p. Also, -** set BtShared.db to the database handle associated with p and the -** p->locked boolean to true. -*/ -static void lockBtreeMutex(Btree *p){ - assert( p->locked==0 ); - assert( sqlite3_mutex_notheld(p->pBt->mutex) ); - assert( sqlite3_mutex_held(p->db->mutex) ); - - sqlite3_mutex_enter(p->pBt->mutex); - p->pBt->db = p->db; - p->locked = 1; -} - -/* -** Release the BtShared mutex associated with B-Tree handle p and -** clear the p->locked boolean. -*/ -static void unlockBtreeMutex(Btree *p){ - BtShared *pBt = p->pBt; - assert( p->locked==1 ); - assert( sqlite3_mutex_held(pBt->mutex) ); - assert( sqlite3_mutex_held(p->db->mutex) ); - assert( p->db==pBt->db ); - - sqlite3_mutex_leave(pBt->mutex); - p->locked = 0; -} - -/* -** Enter a mutex on the given BTree object. -** -** If the object is not sharable, then no mutex is ever required -** and this routine is a no-op. The underlying mutex is non-recursive. -** But we keep a reference count in Btree.wantToLock so the behavior -** of this interface is recursive. -** -** To avoid deadlocks, multiple Btrees are locked in the same order -** by all database connections. The p->pNext is a list of other -** Btrees belonging to the same database connection as the p Btree -** which need to be locked after p. If we cannot get a lock on -** p, then first unlock all of the others on p->pNext, then wait -** for the lock to become available on p, then relock all of the -** subsequent Btrees that desire a lock. -*/ -void sqlite3BtreeEnter(Btree *p){ - Btree *pLater; - - /* Some basic sanity checking on the Btree. The list of Btrees - ** connected by pNext and pPrev should be in sorted order by - ** Btree.pBt value. All elements of the list should belong to - ** the same connection. Only shared Btrees are on the list. */ - assert( p->pNext==0 || p->pNext->pBt>p->pBt ); - assert( p->pPrev==0 || p->pPrev->pBtpBt ); - assert( p->pNext==0 || p->pNext->db==p->db ); - assert( p->pPrev==0 || p->pPrev->db==p->db ); - assert( p->sharable || (p->pNext==0 && p->pPrev==0) ); - - /* Check for locking consistency */ - assert( !p->locked || p->wantToLock>0 ); - assert( p->sharable || p->wantToLock==0 ); - - /* We should already hold a lock on the database connection */ - assert( sqlite3_mutex_held(p->db->mutex) ); - - /* Unless the database is sharable and unlocked, then BtShared.db - ** should already be set correctly. */ - assert( (p->locked==0 && p->sharable) || p->pBt->db==p->db ); - - if( !p->sharable ) return; - p->wantToLock++; - if( p->locked ) return; - - /* In most cases, we should be able to acquire the lock we - ** want without having to go throught the ascending lock - ** procedure that follows. Just be sure not to block. - */ - if( sqlite3_mutex_try(p->pBt->mutex)==SQLITE_OK ){ - p->pBt->db = p->db; - p->locked = 1; - return; - } - - /* To avoid deadlock, first release all locks with a larger - ** BtShared address. Then acquire our lock. Then reacquire - ** the other BtShared locks that we used to hold in ascending - ** order. - */ - for(pLater=p->pNext; pLater; pLater=pLater->pNext){ - assert( pLater->sharable ); - assert( pLater->pNext==0 || pLater->pNext->pBt>pLater->pBt ); - assert( !pLater->locked || pLater->wantToLock>0 ); - if( pLater->locked ){ - unlockBtreeMutex(pLater); - } - } - lockBtreeMutex(p); - for(pLater=p->pNext; pLater; pLater=pLater->pNext){ - if( pLater->wantToLock ){ - lockBtreeMutex(pLater); - } - } -} - -/* -** Exit the recursive mutex on a Btree. -*/ -void sqlite3BtreeLeave(Btree *p){ - if( p->sharable ){ - assert( p->wantToLock>0 ); - p->wantToLock--; - if( p->wantToLock==0 ){ - unlockBtreeMutex(p); - } - } -} - -#ifndef NDEBUG -/* -** Return true if the BtShared mutex is held on the btree, or if the -** B-Tree is not marked as sharable. -** -** This routine is used only from within assert() statements. -*/ -int sqlite3BtreeHoldsMutex(Btree *p){ - assert( p->sharable==0 || p->locked==0 || p->wantToLock>0 ); - assert( p->sharable==0 || p->locked==0 || p->db==p->pBt->db ); - assert( p->sharable==0 || p->locked==0 || sqlite3_mutex_held(p->pBt->mutex) ); - assert( p->sharable==0 || p->locked==0 || sqlite3_mutex_held(p->db->mutex) ); - - return (p->sharable==0 || p->locked); -} -#endif - - -#ifndef SQLITE_OMIT_INCRBLOB -/* -** Enter and leave a mutex on a Btree given a cursor owned by that -** Btree. These entry points are used by incremental I/O and can be -** omitted if that module is not used. -*/ -void sqlite3BtreeEnterCursor(BtCursor *pCur){ - sqlite3BtreeEnter(pCur->pBtree); -} -void sqlite3BtreeLeaveCursor(BtCursor *pCur){ - sqlite3BtreeLeave(pCur->pBtree); -} -#endif /* SQLITE_OMIT_INCRBLOB */ - - -/* -** Enter the mutex on every Btree associated with a database -** connection. This is needed (for example) prior to parsing -** a statement since we will be comparing table and column names -** against all schemas and we do not want those schemas being -** reset out from under us. -** -** There is a corresponding leave-all procedures. -** -** Enter the mutexes in accending order by BtShared pointer address -** to avoid the possibility of deadlock when two threads with -** two or more btrees in common both try to lock all their btrees -** at the same instant. -*/ -void sqlite3BtreeEnterAll(sqlite3 *db){ - int i; - Btree *p; - assert( sqlite3_mutex_held(db->mutex) ); - for(i=0; inDb; i++){ - p = db->aDb[i].pBt; - if( p ) sqlite3BtreeEnter(p); - } -} -void sqlite3BtreeLeaveAll(sqlite3 *db){ - int i; - Btree *p; - assert( sqlite3_mutex_held(db->mutex) ); - for(i=0; inDb; i++){ - p = db->aDb[i].pBt; - if( p ) sqlite3BtreeLeave(p); - } -} - -/* -** Return true if a particular Btree requires a lock. Return FALSE if -** no lock is ever required since it is not sharable. -*/ -int sqlite3BtreeSharable(Btree *p){ - return p->sharable; -} - -#ifndef NDEBUG -/* -** Return true if the current thread holds the database connection -** mutex and all required BtShared mutexes. -** -** This routine is used inside assert() statements only. -*/ -int sqlite3BtreeHoldsAllMutexes(sqlite3 *db){ - int i; - if( !sqlite3_mutex_held(db->mutex) ){ - return 0; - } - for(i=0; inDb; i++){ - Btree *p; - p = db->aDb[i].pBt; - if( p && p->sharable && - (p->wantToLock==0 || !sqlite3_mutex_held(p->pBt->mutex)) ){ - return 0; - } - } - return 1; -} -#endif /* NDEBUG */ - -#ifndef NDEBUG -/* -** Return true if the correct mutexes are held for accessing the -** db->aDb[iDb].pSchema structure. The mutexes required for schema -** access are: -** -** (1) The mutex on db -** (2) if iDb!=1, then the mutex on db->aDb[iDb].pBt. -** -** If pSchema is not NULL, then iDb is computed from pSchema and -** db using sqlite3SchemaToIndex(). -*/ -int sqlite3SchemaMutexHeld(sqlite3 *db, int iDb, Schema *pSchema){ - Btree *p; - assert( db!=0 ); - if( pSchema ) iDb = sqlite3SchemaToIndex(db, pSchema); - assert( iDb>=0 && iDbnDb ); - if( !sqlite3_mutex_held(db->mutex) ) return 0; - if( iDb==1 ) return 1; - p = db->aDb[iDb].pBt; - assert( p!=0 ); - return p->sharable==0 || p->locked==1; -} -#endif /* NDEBUG */ - -#else /* SQLITE_THREADSAFE>0 above. SQLITE_THREADSAFE==0 below */ -/* -** The following are special cases for mutex enter routines for use -** in single threaded applications that use shared cache. Except for -** these two routines, all mutex operations are no-ops in that case and -** are null #defines in btree.h. -** -** If shared cache is disabled, then all btree mutex routines, including -** the ones below, are no-ops and are null #defines in btree.h. -*/ - -void sqlite3BtreeEnter(Btree *p){ - p->pBt->db = p->db; -} -void sqlite3BtreeEnterAll(sqlite3 *db){ - int i; - for(i=0; inDb; i++){ - Btree *p = db->aDb[i].pBt; - if( p ){ - p->pBt->db = p->db; - } - } -} -#endif /* if SQLITE_THREADSAFE */ -#endif /* ifndef SQLITE_OMIT_SHARED_CACHE */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/btree.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/btree.c deleted file mode 100644 index 2ddbfc81cc..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/btree.c +++ /dev/null @@ -1,8225 +0,0 @@ -/* -** 2004 April 6 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file implements a external (disk-based) database using BTrees. -** See the header comment on "btreeInt.h" for additional information. -** Including a description of file format and an overview of operation. -*/ -#include "btreeInt.h" - -/* -** The header string that appears at the beginning of every -** SQLite database. -*/ -static const char zMagicHeader[] = SQLITE_FILE_HEADER; - -/* -** Set this global variable to 1 to enable tracing using the TRACE -** macro. -*/ -#if 0 -int sqlite3BtreeTrace=1; /* True to enable tracing */ -# define TRACE(X) if(sqlite3BtreeTrace){printf X;fflush(stdout);} -#else -# define TRACE(X) -#endif - -/* -** Extract a 2-byte big-endian integer from an array of unsigned bytes. -** But if the value is zero, make it 65536. -** -** This routine is used to extract the "offset to cell content area" value -** from the header of a btree page. If the page size is 65536 and the page -** is empty, the offset should be 65536, but the 2-byte value stores zero. -** This routine makes the necessary adjustment to 65536. -*/ -#define get2byteNotZero(X) (((((int)get2byte(X))-1)&0xffff)+1) - -#ifndef SQLITE_OMIT_SHARED_CACHE -/* -** A list of BtShared objects that are eligible for participation -** in shared cache. This variable has file scope during normal builds, -** but the test harness needs to access it so we make it global for -** test builds. -** -** Access to this variable is protected by SQLITE_MUTEX_STATIC_MASTER. -*/ -#ifdef SQLITE_TEST -BtShared *SQLITE_WSD sqlite3SharedCacheList = 0; -#else -static BtShared *SQLITE_WSD sqlite3SharedCacheList = 0; -#endif -#endif /* SQLITE_OMIT_SHARED_CACHE */ - -#ifndef SQLITE_OMIT_SHARED_CACHE -/* -** Enable or disable the shared pager and schema features. -** -** This routine has no effect on existing database connections. -** The shared cache setting effects only future calls to -** sqlite3_open(), sqlite3_open16(), or sqlite3_open_v2(). -*/ -int sqlite3_enable_shared_cache(int enable){ - sqlite3GlobalConfig.sharedCacheEnabled = enable; - return SQLITE_OK; -} -#endif - - - -#ifdef SQLITE_OMIT_SHARED_CACHE - /* - ** The functions querySharedCacheTableLock(), setSharedCacheTableLock(), - ** and clearAllSharedCacheTableLocks() - ** manipulate entries in the BtShared.pLock linked list used to store - ** shared-cache table level locks. If the library is compiled with the - ** shared-cache feature disabled, then there is only ever one user - ** of each BtShared structure and so this locking is not necessary. - ** So define the lock related functions as no-ops. - */ - #define querySharedCacheTableLock(a,b,c) SQLITE_OK - #define setSharedCacheTableLock(a,b,c) SQLITE_OK - #define clearAllSharedCacheTableLocks(a) - #define downgradeAllSharedCacheTableLocks(a) - #define hasSharedCacheTableLock(a,b,c,d) 1 - #define hasReadConflicts(a, b) 0 -#endif - -#ifndef SQLITE_OMIT_SHARED_CACHE - -#ifdef SQLITE_DEBUG -/* -**** This function is only used as part of an assert() statement. *** -** -** Check to see if pBtree holds the required locks to read or write to the -** table with root page iRoot. Return 1 if it does and 0 if not. -** -** For example, when writing to a table with root-page iRoot via -** Btree connection pBtree: -** -** assert( hasSharedCacheTableLock(pBtree, iRoot, 0, WRITE_LOCK) ); -** -** When writing to an index that resides in a sharable database, the -** caller should have first obtained a lock specifying the root page of -** the corresponding table. This makes things a bit more complicated, -** as this module treats each table as a separate structure. To determine -** the table corresponding to the index being written, this -** function has to search through the database schema. -** -** Instead of a lock on the table/index rooted at page iRoot, the caller may -** hold a write-lock on the schema table (root page 1). This is also -** acceptable. -*/ -static int hasSharedCacheTableLock( - Btree *pBtree, /* Handle that must hold lock */ - Pgno iRoot, /* Root page of b-tree */ - int isIndex, /* True if iRoot is the root of an index b-tree */ - int eLockType /* Required lock type (READ_LOCK or WRITE_LOCK) */ -){ - Schema *pSchema = (Schema *)pBtree->pBt->pSchema; - Pgno iTab = 0; - BtLock *pLock; - - /* If this database is not shareable, or if the client is reading - ** and has the read-uncommitted flag set, then no lock is required. - ** Return true immediately. - */ - if( (pBtree->sharable==0) - || (eLockType==READ_LOCK && (pBtree->db->flags & SQLITE_ReadUncommitted)) - ){ - return 1; - } - - /* If the client is reading or writing an index and the schema is - ** not loaded, then it is too difficult to actually check to see if - ** the correct locks are held. So do not bother - just return true. - ** This case does not come up very often anyhow. - */ - if( isIndex && (!pSchema || (pSchema->flags&DB_SchemaLoaded)==0) ){ - return 1; - } - - /* Figure out the root-page that the lock should be held on. For table - ** b-trees, this is just the root page of the b-tree being read or - ** written. For index b-trees, it is the root page of the associated - ** table. */ - if( isIndex ){ - HashElem *p; - for(p=sqliteHashFirst(&pSchema->idxHash); p; p=sqliteHashNext(p)){ - Index *pIdx = (Index *)sqliteHashData(p); - if( pIdx->tnum==(int)iRoot ){ - iTab = pIdx->pTable->tnum; - } - } - }else{ - iTab = iRoot; - } - - /* Search for the required lock. Either a write-lock on root-page iTab, a - ** write-lock on the schema table, or (if the client is reading) a - ** read-lock on iTab will suffice. Return 1 if any of these are found. */ - for(pLock=pBtree->pBt->pLock; pLock; pLock=pLock->pNext){ - if( pLock->pBtree==pBtree - && (pLock->iTable==iTab || (pLock->eLock==WRITE_LOCK && pLock->iTable==1)) - && pLock->eLock>=eLockType - ){ - return 1; - } - } - - /* Failed to find the required lock. */ - return 0; -} -#endif /* SQLITE_DEBUG */ - -#ifdef SQLITE_DEBUG -/* -**** This function may be used as part of assert() statements only. **** -** -** Return true if it would be illegal for pBtree to write into the -** table or index rooted at iRoot because other shared connections are -** simultaneously reading that same table or index. -** -** It is illegal for pBtree to write if some other Btree object that -** shares the same BtShared object is currently reading or writing -** the iRoot table. Except, if the other Btree object has the -** read-uncommitted flag set, then it is OK for the other object to -** have a read cursor. -** -** For example, before writing to any part of the table or index -** rooted at page iRoot, one should call: -** -** assert( !hasReadConflicts(pBtree, iRoot) ); -*/ -static int hasReadConflicts(Btree *pBtree, Pgno iRoot){ - BtCursor *p; - for(p=pBtree->pBt->pCursor; p; p=p->pNext){ - if( p->pgnoRoot==iRoot - && p->pBtree!=pBtree - && 0==(p->pBtree->db->flags & SQLITE_ReadUncommitted) - ){ - return 1; - } - } - return 0; -} -#endif /* #ifdef SQLITE_DEBUG */ - -/* -** Query to see if Btree handle p may obtain a lock of type eLock -** (READ_LOCK or WRITE_LOCK) on the table with root-page iTab. Return -** SQLITE_OK if the lock may be obtained (by calling -** setSharedCacheTableLock()), or SQLITE_LOCKED if not. -*/ -static int querySharedCacheTableLock(Btree *p, Pgno iTab, u8 eLock){ - BtShared *pBt = p->pBt; - BtLock *pIter; - - assert( sqlite3BtreeHoldsMutex(p) ); - assert( eLock==READ_LOCK || eLock==WRITE_LOCK ); - assert( p->db!=0 ); - assert( !(p->db->flags&SQLITE_ReadUncommitted)||eLock==WRITE_LOCK||iTab==1 ); - - /* If requesting a write-lock, then the Btree must have an open write - ** transaction on this file. And, obviously, for this to be so there - ** must be an open write transaction on the file itself. - */ - assert( eLock==READ_LOCK || (p==pBt->pWriter && p->inTrans==TRANS_WRITE) ); - assert( eLock==READ_LOCK || pBt->inTransaction==TRANS_WRITE ); - - /* This routine is a no-op if the shared-cache is not enabled */ - if( !p->sharable ){ - return SQLITE_OK; - } - - /* If some other connection is holding an exclusive lock, the - ** requested lock may not be obtained. - */ - if( pBt->pWriter!=p && pBt->isExclusive ){ - sqlite3ConnectionBlocked(p->db, pBt->pWriter->db); - return SQLITE_LOCKED_SHAREDCACHE; - } - - for(pIter=pBt->pLock; pIter; pIter=pIter->pNext){ - /* The condition (pIter->eLock!=eLock) in the following if(...) - ** statement is a simplification of: - ** - ** (eLock==WRITE_LOCK || pIter->eLock==WRITE_LOCK) - ** - ** since we know that if eLock==WRITE_LOCK, then no other connection - ** may hold a WRITE_LOCK on any table in this file (since there can - ** only be a single writer). - */ - assert( pIter->eLock==READ_LOCK || pIter->eLock==WRITE_LOCK ); - assert( eLock==READ_LOCK || pIter->pBtree==p || pIter->eLock==READ_LOCK); - if( pIter->pBtree!=p && pIter->iTable==iTab && pIter->eLock!=eLock ){ - sqlite3ConnectionBlocked(p->db, pIter->pBtree->db); - if( eLock==WRITE_LOCK ){ - assert( p==pBt->pWriter ); - pBt->isPending = 1; - } - return SQLITE_LOCKED_SHAREDCACHE; - } - } - return SQLITE_OK; -} -#endif /* !SQLITE_OMIT_SHARED_CACHE */ - -#ifndef SQLITE_OMIT_SHARED_CACHE -/* -** Add a lock on the table with root-page iTable to the shared-btree used -** by Btree handle p. Parameter eLock must be either READ_LOCK or -** WRITE_LOCK. -** -** This function assumes the following: -** -** (a) The specified Btree object p is connected to a sharable -** database (one with the BtShared.sharable flag set), and -** -** (b) No other Btree objects hold a lock that conflicts -** with the requested lock (i.e. querySharedCacheTableLock() has -** already been called and returned SQLITE_OK). -** -** SQLITE_OK is returned if the lock is added successfully. SQLITE_NOMEM -** is returned if a malloc attempt fails. -*/ -static int setSharedCacheTableLock(Btree *p, Pgno iTable, u8 eLock){ - BtShared *pBt = p->pBt; - BtLock *pLock = 0; - BtLock *pIter; - - assert( sqlite3BtreeHoldsMutex(p) ); - assert( eLock==READ_LOCK || eLock==WRITE_LOCK ); - assert( p->db!=0 ); - - /* A connection with the read-uncommitted flag set will never try to - ** obtain a read-lock using this function. The only read-lock obtained - ** by a connection in read-uncommitted mode is on the sqlite_master - ** table, and that lock is obtained in BtreeBeginTrans(). */ - assert( 0==(p->db->flags&SQLITE_ReadUncommitted) || eLock==WRITE_LOCK ); - - /* This function should only be called on a sharable b-tree after it - ** has been determined that no other b-tree holds a conflicting lock. */ - assert( p->sharable ); - assert( SQLITE_OK==querySharedCacheTableLock(p, iTable, eLock) ); - - /* First search the list for an existing lock on this table. */ - for(pIter=pBt->pLock; pIter; pIter=pIter->pNext){ - if( pIter->iTable==iTable && pIter->pBtree==p ){ - pLock = pIter; - break; - } - } - - /* If the above search did not find a BtLock struct associating Btree p - ** with table iTable, allocate one and link it into the list. - */ - if( !pLock ){ - pLock = (BtLock *)sqlite3MallocZero(sizeof(BtLock)); - if( !pLock ){ - return SQLITE_NOMEM; - } - pLock->iTable = iTable; - pLock->pBtree = p; - pLock->pNext = pBt->pLock; - pBt->pLock = pLock; - } - - /* Set the BtLock.eLock variable to the maximum of the current lock - ** and the requested lock. This means if a write-lock was already held - ** and a read-lock requested, we don't incorrectly downgrade the lock. - */ - assert( WRITE_LOCK>READ_LOCK ); - if( eLock>pLock->eLock ){ - pLock->eLock = eLock; - } - - return SQLITE_OK; -} -#endif /* !SQLITE_OMIT_SHARED_CACHE */ - -#ifndef SQLITE_OMIT_SHARED_CACHE -/* -** Release all the table locks (locks obtained via calls to -** the setSharedCacheTableLock() procedure) held by Btree object p. -** -** This function assumes that Btree p has an open read or write -** transaction. If it does not, then the BtShared.isPending variable -** may be incorrectly cleared. -*/ -static void clearAllSharedCacheTableLocks(Btree *p){ - BtShared *pBt = p->pBt; - BtLock **ppIter = &pBt->pLock; - - assert( sqlite3BtreeHoldsMutex(p) ); - assert( p->sharable || 0==*ppIter ); - assert( p->inTrans>0 ); - - while( *ppIter ){ - BtLock *pLock = *ppIter; - assert( pBt->isExclusive==0 || pBt->pWriter==pLock->pBtree ); - assert( pLock->pBtree->inTrans>=pLock->eLock ); - if( pLock->pBtree==p ){ - *ppIter = pLock->pNext; - assert( pLock->iTable!=1 || pLock==&p->lock ); - if( pLock->iTable!=1 ){ - sqlite3_free(pLock); - } - }else{ - ppIter = &pLock->pNext; - } - } - - assert( pBt->isPending==0 || pBt->pWriter ); - if( pBt->pWriter==p ){ - pBt->pWriter = 0; - pBt->isExclusive = 0; - pBt->isPending = 0; - }else if( pBt->nTransaction==2 ){ - /* This function is called when Btree p is concluding its - ** transaction. If there currently exists a writer, and p is not - ** that writer, then the number of locks held by connections other - ** than the writer must be about to drop to zero. In this case - ** set the isPending flag to 0. - ** - ** If there is not currently a writer, then BtShared.isPending must - ** be zero already. So this next line is harmless in that case. - */ - pBt->isPending = 0; - } -} - -/* -** This function changes all write-locks held by Btree p into read-locks. -*/ -static void downgradeAllSharedCacheTableLocks(Btree *p){ - BtShared *pBt = p->pBt; - if( pBt->pWriter==p ){ - BtLock *pLock; - pBt->pWriter = 0; - pBt->isExclusive = 0; - pBt->isPending = 0; - for(pLock=pBt->pLock; pLock; pLock=pLock->pNext){ - assert( pLock->eLock==READ_LOCK || pLock->pBtree==p ); - pLock->eLock = READ_LOCK; - } - } -} - -#endif /* SQLITE_OMIT_SHARED_CACHE */ - -static void releasePage(MemPage *pPage); /* Forward reference */ - -/* -***** This routine is used inside of assert() only **** -** -** Verify that the cursor holds the mutex on its BtShared -*/ -#ifdef SQLITE_DEBUG -static int cursorHoldsMutex(BtCursor *p){ - return sqlite3_mutex_held(p->pBt->mutex); -} -#endif - - -#ifndef SQLITE_OMIT_INCRBLOB -/* -** Invalidate the overflow page-list cache for cursor pCur, if any. -*/ -static void invalidateOverflowCache(BtCursor *pCur){ - assert( cursorHoldsMutex(pCur) ); - sqlite3_free(pCur->aOverflow); - pCur->aOverflow = 0; -} - -/* -** Invalidate the overflow page-list cache for all cursors opened -** on the shared btree structure pBt. -*/ -static void invalidateAllOverflowCache(BtShared *pBt){ - BtCursor *p; - assert( sqlite3_mutex_held(pBt->mutex) ); - for(p=pBt->pCursor; p; p=p->pNext){ - invalidateOverflowCache(p); - } -} - -/* -** This function is called before modifying the contents of a table -** to invalidate any incrblob cursors that are open on the -** row or one of the rows being modified. -** -** If argument isClearTable is true, then the entire contents of the -** table is about to be deleted. In this case invalidate all incrblob -** cursors open on any row within the table with root-page pgnoRoot. -** -** Otherwise, if argument isClearTable is false, then the row with -** rowid iRow is being replaced or deleted. In this case invalidate -** only those incrblob cursors open on that specific row. -*/ -static void invalidateIncrblobCursors( - Btree *pBtree, /* The database file to check */ - i64 iRow, /* The rowid that might be changing */ - int isClearTable /* True if all rows are being deleted */ -){ - BtCursor *p; - BtShared *pBt = pBtree->pBt; - assert( sqlite3BtreeHoldsMutex(pBtree) ); - for(p=pBt->pCursor; p; p=p->pNext){ - if( p->isIncrblobHandle && (isClearTable || p->info.nKey==iRow) ){ - p->eState = CURSOR_INVALID; - } - } -} - -#else - /* Stub functions when INCRBLOB is omitted */ - #define invalidateOverflowCache(x) - #define invalidateAllOverflowCache(x) - #define invalidateIncrblobCursors(x,y,z) -#endif /* SQLITE_OMIT_INCRBLOB */ - -/* -** Set bit pgno of the BtShared.pHasContent bitvec. This is called -** when a page that previously contained data becomes a free-list leaf -** page. -** -** The BtShared.pHasContent bitvec exists to work around an obscure -** bug caused by the interaction of two useful IO optimizations surrounding -** free-list leaf pages: -** -** 1) When all data is deleted from a page and the page becomes -** a free-list leaf page, the page is not written to the database -** (as free-list leaf pages contain no meaningful data). Sometimes -** such a page is not even journalled (as it will not be modified, -** why bother journalling it?). -** -** 2) When a free-list leaf page is reused, its content is not read -** from the database or written to the journal file (why should it -** be, if it is not at all meaningful?). -** -** By themselves, these optimizations work fine and provide a handy -** performance boost to bulk delete or insert operations. However, if -** a page is moved to the free-list and then reused within the same -** transaction, a problem comes up. If the page is not journalled when -** it is moved to the free-list and it is also not journalled when it -** is extracted from the free-list and reused, then the original data -** may be lost. In the event of a rollback, it may not be possible -** to restore the database to its original configuration. -** -** The solution is the BtShared.pHasContent bitvec. Whenever a page is -** moved to become a free-list leaf page, the corresponding bit is -** set in the bitvec. Whenever a leaf page is extracted from the free-list, -** optimization 2 above is omitted if the corresponding bit is already -** set in BtShared.pHasContent. The contents of the bitvec are cleared -** at the end of every transaction. -*/ -static int btreeSetHasContent(BtShared *pBt, Pgno pgno){ - int rc = SQLITE_OK; - if( !pBt->pHasContent ){ - assert( pgno<=pBt->nPage ); - pBt->pHasContent = sqlite3BitvecCreate(pBt->nPage); - if( !pBt->pHasContent ){ - rc = SQLITE_NOMEM; - } - } - if( rc==SQLITE_OK && pgno<=sqlite3BitvecSize(pBt->pHasContent) ){ - rc = sqlite3BitvecSet(pBt->pHasContent, pgno); - } - return rc; -} - -/* -** Query the BtShared.pHasContent vector. -** -** This function is called when a free-list leaf page is removed from the -** free-list for reuse. It returns false if it is safe to retrieve the -** page from the pager layer with the 'no-content' flag set. True otherwise. -*/ -static int btreeGetHasContent(BtShared *pBt, Pgno pgno){ - Bitvec *p = pBt->pHasContent; - return (p && (pgno>sqlite3BitvecSize(p) || sqlite3BitvecTest(p, pgno))); -} - -/* -** Clear (destroy) the BtShared.pHasContent bitvec. This should be -** invoked at the conclusion of each write-transaction. -*/ -static void btreeClearHasContent(BtShared *pBt){ - sqlite3BitvecDestroy(pBt->pHasContent); - pBt->pHasContent = 0; -} - -/* -** Save the current cursor position in the variables BtCursor.nKey -** and BtCursor.pKey. The cursor's state is set to CURSOR_REQUIRESEEK. -** -** The caller must ensure that the cursor is valid (has eState==CURSOR_VALID) -** prior to calling this routine. -*/ -static int saveCursorPosition(BtCursor *pCur){ - int rc; - - assert( CURSOR_VALID==pCur->eState ); - assert( 0==pCur->pKey ); - assert( cursorHoldsMutex(pCur) ); - - rc = sqlite3BtreeKeySize(pCur, &pCur->nKey); - assert( rc==SQLITE_OK ); /* KeySize() cannot fail */ - - /* If this is an intKey table, then the above call to BtreeKeySize() - ** stores the integer key in pCur->nKey. In this case this value is - ** all that is required. Otherwise, if pCur is not open on an intKey - ** table, then malloc space for and store the pCur->nKey bytes of key - ** data. - */ - if( 0==pCur->apPage[0]->intKey ){ - void *pKey = sqlite3Malloc( (int)pCur->nKey ); - if( pKey ){ - rc = sqlite3BtreeKey(pCur, 0, (int)pCur->nKey, pKey); - if( rc==SQLITE_OK ){ - pCur->pKey = pKey; - }else{ - sqlite3_free(pKey); - } - }else{ - rc = SQLITE_NOMEM; - } - } - assert( !pCur->apPage[0]->intKey || !pCur->pKey ); - - if( rc==SQLITE_OK ){ - int i; - for(i=0; i<=pCur->iPage; i++){ - releasePage(pCur->apPage[i]); - pCur->apPage[i] = 0; - } - pCur->iPage = -1; - pCur->eState = CURSOR_REQUIRESEEK; - } - - invalidateOverflowCache(pCur); - return rc; -} - -/* -** Save the positions of all cursors (except pExcept) that are open on -** the table with root-page iRoot. Usually, this is called just before cursor -** pExcept is used to modify the table (BtreeDelete() or BtreeInsert()). -*/ -static int saveAllCursors(BtShared *pBt, Pgno iRoot, BtCursor *pExcept){ - BtCursor *p; - assert( sqlite3_mutex_held(pBt->mutex) ); - assert( pExcept==0 || pExcept->pBt==pBt ); - for(p=pBt->pCursor; p; p=p->pNext){ - if( p!=pExcept && (0==iRoot || p->pgnoRoot==iRoot) && - p->eState==CURSOR_VALID ){ - int rc = saveCursorPosition(p); - if( SQLITE_OK!=rc ){ - return rc; - } - } - } - return SQLITE_OK; -} - -/* -** Clear the current cursor position. -*/ -void sqlite3BtreeClearCursor(BtCursor *pCur){ - assert( cursorHoldsMutex(pCur) ); - sqlite3_free(pCur->pKey); - pCur->pKey = 0; - pCur->eState = CURSOR_INVALID; -} - -/* -** In this version of BtreeMoveto, pKey is a packed index record -** such as is generated by the OP_MakeRecord opcode. Unpack the -** record and then call BtreeMovetoUnpacked() to do the work. -*/ -static int btreeMoveto( - BtCursor *pCur, /* Cursor open on the btree to be searched */ - const void *pKey, /* Packed key if the btree is an index */ - i64 nKey, /* Integer key for tables. Size of pKey for indices */ - int bias, /* Bias search to the high end */ - int *pRes /* Write search results here */ -){ - int rc; /* Status code */ - UnpackedRecord *pIdxKey; /* Unpacked index key */ - char aSpace[150]; /* Temp space for pIdxKey - to avoid a malloc */ - char *pFree = 0; - - if( pKey ){ - assert( nKey==(i64)(int)nKey ); - pIdxKey = sqlite3VdbeAllocUnpackedRecord( - pCur->pKeyInfo, aSpace, sizeof(aSpace), &pFree - ); - if( pIdxKey==0 ) return SQLITE_NOMEM; - sqlite3VdbeRecordUnpack(pCur->pKeyInfo, (int)nKey, pKey, pIdxKey); - }else{ - pIdxKey = 0; - } - rc = sqlite3BtreeMovetoUnpacked(pCur, pIdxKey, nKey, bias, pRes); - if( pFree ){ - sqlite3DbFree(pCur->pKeyInfo->db, pFree); - } - return rc; -} - -/* -** Restore the cursor to the position it was in (or as close to as possible) -** when saveCursorPosition() was called. Note that this call deletes the -** saved position info stored by saveCursorPosition(), so there can be -** at most one effective restoreCursorPosition() call after each -** saveCursorPosition(). -*/ -static int btreeRestoreCursorPosition(BtCursor *pCur){ - int rc; - assert( cursorHoldsMutex(pCur) ); - assert( pCur->eState>=CURSOR_REQUIRESEEK ); - if( pCur->eState==CURSOR_FAULT ){ - return pCur->skipNext; - } - pCur->eState = CURSOR_INVALID; - rc = btreeMoveto(pCur, pCur->pKey, pCur->nKey, 0, &pCur->skipNext); - if( rc==SQLITE_OK ){ - sqlite3_free(pCur->pKey); - pCur->pKey = 0; - assert( pCur->eState==CURSOR_VALID || pCur->eState==CURSOR_INVALID ); - } - return rc; -} - -#define restoreCursorPosition(p) \ - (p->eState>=CURSOR_REQUIRESEEK ? \ - btreeRestoreCursorPosition(p) : \ - SQLITE_OK) - -/* -** Determine whether or not a cursor has moved from the position it -** was last placed at. Cursors can move when the row they are pointing -** at is deleted out from under them. -** -** This routine returns an error code if something goes wrong. The -** integer *pHasMoved is set to one if the cursor has moved and 0 if not. -*/ -int sqlite3BtreeCursorHasMoved(BtCursor *pCur, int *pHasMoved){ - int rc; - - rc = restoreCursorPosition(pCur); - if( rc ){ - *pHasMoved = 1; - return rc; - } - if( pCur->eState!=CURSOR_VALID || pCur->skipNext!=0 ){ - *pHasMoved = 1; - }else{ - *pHasMoved = 0; - } - return SQLITE_OK; -} - -#ifndef SQLITE_OMIT_AUTOVACUUM -/* -** Given a page number of a regular database page, return the page -** number for the pointer-map page that contains the entry for the -** input page number. -** -** Return 0 (not a valid page) for pgno==1 since there is -** no pointer map associated with page 1. The integrity_check logic -** requires that ptrmapPageno(*,1)!=1. -*/ -static Pgno ptrmapPageno(BtShared *pBt, Pgno pgno){ - int nPagesPerMapPage; - Pgno iPtrMap, ret; - assert( sqlite3_mutex_held(pBt->mutex) ); - if( pgno<2 ) return 0; - nPagesPerMapPage = (pBt->usableSize/5)+1; - iPtrMap = (pgno-2)/nPagesPerMapPage; - ret = (iPtrMap*nPagesPerMapPage) + 2; - if( ret==PENDING_BYTE_PAGE(pBt) ){ - ret++; - } - return ret; -} - -/* -** Write an entry into the pointer map. -** -** This routine updates the pointer map entry for page number 'key' -** so that it maps to type 'eType' and parent page number 'pgno'. -** -** If *pRC is initially non-zero (non-SQLITE_OK) then this routine is -** a no-op. If an error occurs, the appropriate error code is written -** into *pRC. -*/ -static void ptrmapPut(BtShared *pBt, Pgno key, u8 eType, Pgno parent, int *pRC){ - DbPage *pDbPage; /* The pointer map page */ - u8 *pPtrmap; /* The pointer map data */ - Pgno iPtrmap; /* The pointer map page number */ - int offset; /* Offset in pointer map page */ - int rc; /* Return code from subfunctions */ - - if( *pRC ) return; - - assert( sqlite3_mutex_held(pBt->mutex) ); - /* The master-journal page number must never be used as a pointer map page */ - assert( 0==PTRMAP_ISPAGE(pBt, PENDING_BYTE_PAGE(pBt)) ); - - assert( pBt->autoVacuum ); - if( key==0 ){ - *pRC = SQLITE_CORRUPT_BKPT; - return; - } - iPtrmap = PTRMAP_PAGENO(pBt, key); - rc = sqlite3PagerGet(pBt->pPager, iPtrmap, &pDbPage); - if( rc!=SQLITE_OK ){ - *pRC = rc; - return; - } - offset = PTRMAP_PTROFFSET(iPtrmap, key); - if( offset<0 ){ - *pRC = SQLITE_CORRUPT_BKPT; - goto ptrmap_exit; - } - assert( offset <= (int)pBt->usableSize-5 ); - pPtrmap = (u8 *)sqlite3PagerGetData(pDbPage); - - if( eType!=pPtrmap[offset] || get4byte(&pPtrmap[offset+1])!=parent ){ - TRACE(("PTRMAP_UPDATE: %d->(%d,%d)\n", key, eType, parent)); - *pRC= rc = sqlite3PagerWrite(pDbPage); - if( rc==SQLITE_OK ){ - pPtrmap[offset] = eType; - put4byte(&pPtrmap[offset+1], parent); - } - } - -ptrmap_exit: - sqlite3PagerUnref(pDbPage); -} - -/* -** Read an entry from the pointer map. -** -** This routine retrieves the pointer map entry for page 'key', writing -** the type and parent page number to *pEType and *pPgno respectively. -** An error code is returned if something goes wrong, otherwise SQLITE_OK. -*/ -static int ptrmapGet(BtShared *pBt, Pgno key, u8 *pEType, Pgno *pPgno){ - DbPage *pDbPage; /* The pointer map page */ - int iPtrmap; /* Pointer map page index */ - u8 *pPtrmap; /* Pointer map page data */ - int offset; /* Offset of entry in pointer map */ - int rc; - - assert( sqlite3_mutex_held(pBt->mutex) ); - - iPtrmap = PTRMAP_PAGENO(pBt, key); - rc = sqlite3PagerGet(pBt->pPager, iPtrmap, &pDbPage); - if( rc!=0 ){ - return rc; - } - pPtrmap = (u8 *)sqlite3PagerGetData(pDbPage); - - offset = PTRMAP_PTROFFSET(iPtrmap, key); - if( offset<0 ){ - sqlite3PagerUnref(pDbPage); - return SQLITE_CORRUPT_BKPT; - } - assert( offset <= (int)pBt->usableSize-5 ); - assert( pEType!=0 ); - *pEType = pPtrmap[offset]; - if( pPgno ) *pPgno = get4byte(&pPtrmap[offset+1]); - - sqlite3PagerUnref(pDbPage); - if( *pEType<1 || *pEType>5 ) return SQLITE_CORRUPT_BKPT; - return SQLITE_OK; -} - -#else /* if defined SQLITE_OMIT_AUTOVACUUM */ - #define ptrmapPut(w,x,y,z,rc) - #define ptrmapGet(w,x,y,z) SQLITE_OK - #define ptrmapPutOvflPtr(x, y, rc) -#endif - -/* -** Given a btree page and a cell index (0 means the first cell on -** the page, 1 means the second cell, and so forth) return a pointer -** to the cell content. -** -** This routine works only for pages that do not contain overflow cells. -*/ -#define findCell(P,I) \ - ((P)->aData + ((P)->maskPage & get2byte(&(P)->aData[(P)->cellOffset+2*(I)]))) -#define findCellv2(D,M,O,I) (D+(M&get2byte(D+(O+2*(I))))) - - -/* -** This a more complex version of findCell() that works for -** pages that do contain overflow cells. -*/ -static u8 *findOverflowCell(MemPage *pPage, int iCell){ - int i; - assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - for(i=pPage->nOverflow-1; i>=0; i--){ - int k; - struct _OvflCell *pOvfl; - pOvfl = &pPage->aOvfl[i]; - k = pOvfl->idx; - if( k<=iCell ){ - if( k==iCell ){ - return pOvfl->pCell; - } - iCell--; - } - } - return findCell(pPage, iCell); -} - -/* -** Parse a cell content block and fill in the CellInfo structure. There -** are two versions of this function. btreeParseCell() takes a -** cell index as the second argument and btreeParseCellPtr() -** takes a pointer to the body of the cell as its second argument. -** -** Within this file, the parseCell() macro can be called instead of -** btreeParseCellPtr(). Using some compilers, this will be faster. -*/ -static void btreeParseCellPtr( - MemPage *pPage, /* Page containing the cell */ - u8 *pCell, /* Pointer to the cell text. */ - CellInfo *pInfo /* Fill in this structure */ -){ - u16 n; /* Number bytes in cell content header */ - u32 nPayload; /* Number of bytes of cell payload */ - - assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - - pInfo->pCell = pCell; - assert( pPage->leaf==0 || pPage->leaf==1 ); - n = pPage->childPtrSize; - assert( n==4-4*pPage->leaf ); - if( pPage->intKey ){ - if( pPage->hasData ){ - n += getVarint32(&pCell[n], nPayload); - }else{ - nPayload = 0; - } - n += getVarint(&pCell[n], (u64*)&pInfo->nKey); - pInfo->nData = nPayload; - }else{ - pInfo->nData = 0; - n += getVarint32(&pCell[n], nPayload); - pInfo->nKey = nPayload; - } - pInfo->nPayload = nPayload; - pInfo->nHeader = n; - testcase( nPayload==pPage->maxLocal ); - testcase( nPayload==pPage->maxLocal+1 ); - if( likely(nPayload<=pPage->maxLocal) ){ - /* This is the (easy) common case where the entire payload fits - ** on the local page. No overflow is required. - */ - if( (pInfo->nSize = (u16)(n+nPayload))<4 ) pInfo->nSize = 4; - pInfo->nLocal = (u16)nPayload; - pInfo->iOverflow = 0; - }else{ - /* If the payload will not fit completely on the local page, we have - ** to decide how much to store locally and how much to spill onto - ** overflow pages. The strategy is to minimize the amount of unused - ** space on overflow pages while keeping the amount of local storage - ** in between minLocal and maxLocal. - ** - ** Warning: changing the way overflow payload is distributed in any - ** way will result in an incompatible file format. - */ - int minLocal; /* Minimum amount of payload held locally */ - int maxLocal; /* Maximum amount of payload held locally */ - int surplus; /* Overflow payload available for local storage */ - - minLocal = pPage->minLocal; - maxLocal = pPage->maxLocal; - surplus = minLocal + (nPayload - minLocal)%(pPage->pBt->usableSize - 4); - testcase( surplus==maxLocal ); - testcase( surplus==maxLocal+1 ); - if( surplus <= maxLocal ){ - pInfo->nLocal = (u16)surplus; - }else{ - pInfo->nLocal = (u16)minLocal; - } - pInfo->iOverflow = (u16)(pInfo->nLocal + n); - pInfo->nSize = pInfo->iOverflow + 4; - } -} -#define parseCell(pPage, iCell, pInfo) \ - btreeParseCellPtr((pPage), findCell((pPage), (iCell)), (pInfo)) -static void btreeParseCell( - MemPage *pPage, /* Page containing the cell */ - int iCell, /* The cell index. First cell is 0 */ - CellInfo *pInfo /* Fill in this structure */ -){ - parseCell(pPage, iCell, pInfo); -} - -/* -** Compute the total number of bytes that a Cell needs in the cell -** data area of the btree-page. The return number includes the cell -** data header and the local payload, but not any overflow page or -** the space used by the cell pointer. -*/ -static u16 cellSizePtr(MemPage *pPage, u8 *pCell){ - u8 *pIter = &pCell[pPage->childPtrSize]; - u32 nSize; - -#ifdef SQLITE_DEBUG - /* The value returned by this function should always be the same as - ** the (CellInfo.nSize) value found by doing a full parse of the - ** cell. If SQLITE_DEBUG is defined, an assert() at the bottom of - ** this function verifies that this invariant is not violated. */ - CellInfo debuginfo; - btreeParseCellPtr(pPage, pCell, &debuginfo); -#endif - - if( pPage->intKey ){ - u8 *pEnd; - if( pPage->hasData ){ - pIter += getVarint32(pIter, nSize); - }else{ - nSize = 0; - } - - /* pIter now points at the 64-bit integer key value, a variable length - ** integer. The following block moves pIter to point at the first byte - ** past the end of the key value. */ - pEnd = &pIter[9]; - while( (*pIter++)&0x80 && pItermaxLocal ); - testcase( nSize==pPage->maxLocal+1 ); - if( nSize>pPage->maxLocal ){ - int minLocal = pPage->minLocal; - nSize = minLocal + (nSize - minLocal) % (pPage->pBt->usableSize - 4); - testcase( nSize==pPage->maxLocal ); - testcase( nSize==pPage->maxLocal+1 ); - if( nSize>pPage->maxLocal ){ - nSize = minLocal; - } - nSize += 4; - } - nSize += (u32)(pIter - pCell); - - /* The minimum size of any cell is 4 bytes. */ - if( nSize<4 ){ - nSize = 4; - } - - assert( nSize==debuginfo.nSize ); - return (u16)nSize; -} - -#ifdef SQLITE_DEBUG -/* This variation on cellSizePtr() is used inside of assert() statements -** only. */ -static u16 cellSize(MemPage *pPage, int iCell){ - return cellSizePtr(pPage, findCell(pPage, iCell)); -} -#endif - -#ifndef SQLITE_OMIT_AUTOVACUUM -/* -** If the cell pCell, part of page pPage contains a pointer -** to an overflow page, insert an entry into the pointer-map -** for the overflow page. -*/ -static void ptrmapPutOvflPtr(MemPage *pPage, u8 *pCell, int *pRC){ - CellInfo info; - if( *pRC ) return; - assert( pCell!=0 ); - btreeParseCellPtr(pPage, pCell, &info); - assert( (info.nData+(pPage->intKey?0:info.nKey))==info.nPayload ); - if( info.iOverflow ){ - Pgno ovfl = get4byte(&pCell[info.iOverflow]); - ptrmapPut(pPage->pBt, ovfl, PTRMAP_OVERFLOW1, pPage->pgno, pRC); - } -} -#endif - - -/* -** Defragment the page given. All Cells are moved to the -** end of the page and all free space is collected into one -** big FreeBlk that occurs in between the header and cell -** pointer array and the cell content area. -*/ -static int defragmentPage(MemPage *pPage){ - int i; /* Loop counter */ - int pc; /* Address of a i-th cell */ - int hdr; /* Offset to the page header */ - int size; /* Size of a cell */ - int usableSize; /* Number of usable bytes on a page */ - int cellOffset; /* Offset to the cell pointer array */ - int cbrk; /* Offset to the cell content area */ - int nCell; /* Number of cells on the page */ - unsigned char *data; /* The page data */ - unsigned char *temp; /* Temp area for cell content */ - int iCellFirst; /* First allowable cell index */ - int iCellLast; /* Last possible cell index */ - - - assert( sqlite3PagerIswriteable(pPage->pDbPage) ); - assert( pPage->pBt!=0 ); - assert( pPage->pBt->usableSize <= SQLITE_MAX_PAGE_SIZE ); - assert( pPage->nOverflow==0 ); - assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - temp = sqlite3PagerTempSpace(pPage->pBt->pPager); - data = pPage->aData; - hdr = pPage->hdrOffset; - cellOffset = pPage->cellOffset; - nCell = pPage->nCell; - assert( nCell==get2byte(&data[hdr+3]) ); - usableSize = pPage->pBt->usableSize; - cbrk = get2byte(&data[hdr+5]); - memcpy(&temp[cbrk], &data[cbrk], usableSize - cbrk); - cbrk = usableSize; - iCellFirst = cellOffset + 2*nCell; - iCellLast = usableSize - 4; - for(i=0; iiCellLast ){ - return SQLITE_CORRUPT_BKPT; - } -#endif - assert( pc>=iCellFirst && pc<=iCellLast ); - size = cellSizePtr(pPage, &temp[pc]); - cbrk -= size; -#if defined(SQLITE_ENABLE_OVERSIZE_CELL_CHECK) - if( cbrkusableSize ){ - return SQLITE_CORRUPT_BKPT; - } -#endif - assert( cbrk+size<=usableSize && cbrk>=iCellFirst ); - testcase( cbrk+size==usableSize ); - testcase( pc+size==usableSize ); - memcpy(&data[cbrk], &temp[pc], size); - put2byte(pAddr, cbrk); - } - assert( cbrk>=iCellFirst ); - put2byte(&data[hdr+5], cbrk); - data[hdr+1] = 0; - data[hdr+2] = 0; - data[hdr+7] = 0; - memset(&data[iCellFirst], 0, cbrk-iCellFirst); - assert( sqlite3PagerIswriteable(pPage->pDbPage) ); - if( cbrk-iCellFirst!=pPage->nFree ){ - return SQLITE_CORRUPT_BKPT; - } - return SQLITE_OK; -} - -/* -** Allocate nByte bytes of space from within the B-Tree page passed -** as the first argument. Write into *pIdx the index into pPage->aData[] -** of the first byte of allocated space. Return either SQLITE_OK or -** an error code (usually SQLITE_CORRUPT). -** -** The caller guarantees that there is sufficient space to make the -** allocation. This routine might need to defragment in order to bring -** all the space together, however. This routine will avoid using -** the first two bytes past the cell pointer area since presumably this -** allocation is being made in order to insert a new cell, so we will -** also end up needing a new cell pointer. -*/ -static int allocateSpace(MemPage *pPage, int nByte, int *pIdx){ - const int hdr = pPage->hdrOffset; /* Local cache of pPage->hdrOffset */ - u8 * const data = pPage->aData; /* Local cache of pPage->aData */ - int nFrag; /* Number of fragmented bytes on pPage */ - int top; /* First byte of cell content area */ - int gap; /* First byte of gap between cell pointers and cell content */ - int rc; /* Integer return code */ - int usableSize; /* Usable size of the page */ - - assert( sqlite3PagerIswriteable(pPage->pDbPage) ); - assert( pPage->pBt ); - assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - assert( nByte>=0 ); /* Minimum cell size is 4 */ - assert( pPage->nFree>=nByte ); - assert( pPage->nOverflow==0 ); - usableSize = pPage->pBt->usableSize; - assert( nByte < usableSize-8 ); - - nFrag = data[hdr+7]; - assert( pPage->cellOffset == hdr + 12 - 4*pPage->leaf ); - gap = pPage->cellOffset + 2*pPage->nCell; - top = get2byteNotZero(&data[hdr+5]); - if( gap>top ) return SQLITE_CORRUPT_BKPT; - testcase( gap+2==top ); - testcase( gap+1==top ); - testcase( gap==top ); - - if( nFrag>=60 ){ - /* Always defragment highly fragmented pages */ - rc = defragmentPage(pPage); - if( rc ) return rc; - top = get2byteNotZero(&data[hdr+5]); - }else if( gap+2<=top ){ - /* Search the freelist looking for a free slot big enough to satisfy - ** the request. The allocation is made from the first free slot in - ** the list that is large enough to accomadate it. - */ - int pc, addr; - for(addr=hdr+1; (pc = get2byte(&data[addr]))>0; addr=pc){ - int size; /* Size of the free slot */ - if( pc>usableSize-4 || pc=nByte ){ - int x = size - nByte; - testcase( x==4 ); - testcase( x==3 ); - if( x<4 ){ - /* Remove the slot from the free-list. Update the number of - ** fragmented bytes within the page. */ - memcpy(&data[addr], &data[pc], 2); - data[hdr+7] = (u8)(nFrag + x); - }else if( size+pc > usableSize ){ - return SQLITE_CORRUPT_BKPT; - }else{ - /* The slot remains on the free-list. Reduce its size to account - ** for the portion used by the new allocation. */ - put2byte(&data[pc+2], x); - } - *pIdx = pc + x; - return SQLITE_OK; - } - } - } - - /* Check to make sure there is enough space in the gap to satisfy - ** the allocation. If not, defragment. - */ - testcase( gap+2+nByte==top ); - if( gap+2+nByte>top ){ - rc = defragmentPage(pPage); - if( rc ) return rc; - top = get2byteNotZero(&data[hdr+5]); - assert( gap+nByte<=top ); - } - - - /* Allocate memory from the gap in between the cell pointer array - ** and the cell content area. The btreeInitPage() call has already - ** validated the freelist. Given that the freelist is valid, there - ** is no way that the allocation can extend off the end of the page. - ** The assert() below verifies the previous sentence. - */ - top -= nByte; - put2byte(&data[hdr+5], top); - assert( top+nByte <= (int)pPage->pBt->usableSize ); - *pIdx = top; - return SQLITE_OK; -} - -/* -** Return a section of the pPage->aData to the freelist. -** The first byte of the new free block is pPage->aDisk[start] -** and the size of the block is "size" bytes. -** -** Most of the effort here is involved in coalesing adjacent -** free blocks into a single big free block. -*/ -static int freeSpace(MemPage *pPage, int start, int size){ - int addr, pbegin, hdr; - int iLast; /* Largest possible freeblock offset */ - unsigned char *data = pPage->aData; - - assert( pPage->pBt!=0 ); - assert( sqlite3PagerIswriteable(pPage->pDbPage) ); - assert( start>=pPage->hdrOffset+6+pPage->childPtrSize ); - assert( (start + size) <= (int)pPage->pBt->usableSize ); - assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - assert( size>=0 ); /* Minimum cell size is 4 */ - - if( pPage->pBt->secureDelete ){ - /* Overwrite deleted information with zeros when the secure_delete - ** option is enabled */ - memset(&data[start], 0, size); - } - - /* Add the space back into the linked list of freeblocks. Note that - ** even though the freeblock list was checked by btreeInitPage(), - ** btreeInitPage() did not detect overlapping cells or - ** freeblocks that overlapped cells. Nor does it detect when the - ** cell content area exceeds the value in the page header. If these - ** situations arise, then subsequent insert operations might corrupt - ** the freelist. So we do need to check for corruption while scanning - ** the freelist. - */ - hdr = pPage->hdrOffset; - addr = hdr + 1; - iLast = pPage->pBt->usableSize - 4; - assert( start<=iLast ); - while( (pbegin = get2byte(&data[addr]))0 ){ - if( pbeginiLast ){ - return SQLITE_CORRUPT_BKPT; - } - assert( pbegin>addr || pbegin==0 ); - put2byte(&data[addr], start); - put2byte(&data[start], pbegin); - put2byte(&data[start+2], size); - pPage->nFree = pPage->nFree + (u16)size; - - /* Coalesce adjacent free blocks */ - addr = hdr + 1; - while( (pbegin = get2byte(&data[addr]))>0 ){ - int pnext, psize, x; - assert( pbegin>addr ); - assert( pbegin <= (int)pPage->pBt->usableSize-4 ); - pnext = get2byte(&data[pbegin]); - psize = get2byte(&data[pbegin+2]); - if( pbegin + psize + 3 >= pnext && pnext>0 ){ - int frag = pnext - (pbegin+psize); - if( (frag<0) || (frag>(int)data[hdr+7]) ){ - return SQLITE_CORRUPT_BKPT; - } - data[hdr+7] -= (u8)frag; - x = get2byte(&data[pnext]); - put2byte(&data[pbegin], x); - x = pnext + get2byte(&data[pnext+2]) - pbegin; - put2byte(&data[pbegin+2], x); - }else{ - addr = pbegin; - } - } - - /* If the cell content area begins with a freeblock, remove it. */ - if( data[hdr+1]==data[hdr+5] && data[hdr+2]==data[hdr+6] ){ - int top; - pbegin = get2byte(&data[hdr+1]); - memcpy(&data[hdr+1], &data[pbegin], 2); - top = get2byte(&data[hdr+5]) + get2byte(&data[pbegin+2]); - put2byte(&data[hdr+5], top); - } - assert( sqlite3PagerIswriteable(pPage->pDbPage) ); - return SQLITE_OK; -} - -/* -** Decode the flags byte (the first byte of the header) for a page -** and initialize fields of the MemPage structure accordingly. -** -** Only the following combinations are supported. Anything different -** indicates a corrupt database files: -** -** PTF_ZERODATA -** PTF_ZERODATA | PTF_LEAF -** PTF_LEAFDATA | PTF_INTKEY -** PTF_LEAFDATA | PTF_INTKEY | PTF_LEAF -*/ -static int decodeFlags(MemPage *pPage, int flagByte){ - BtShared *pBt; /* A copy of pPage->pBt */ - - assert( pPage->hdrOffset==(pPage->pgno==1 ? 100 : 0) ); - assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - pPage->leaf = (u8)(flagByte>>3); assert( PTF_LEAF == 1<<3 ); - flagByte &= ~PTF_LEAF; - pPage->childPtrSize = 4-4*pPage->leaf; - pBt = pPage->pBt; - if( flagByte==(PTF_LEAFDATA | PTF_INTKEY) ){ - pPage->intKey = 1; - pPage->hasData = pPage->leaf; - pPage->maxLocal = pBt->maxLeaf; - pPage->minLocal = pBt->minLeaf; - }else if( flagByte==PTF_ZERODATA ){ - pPage->intKey = 0; - pPage->hasData = 0; - pPage->maxLocal = pBt->maxLocal; - pPage->minLocal = pBt->minLocal; - }else{ - return SQLITE_CORRUPT_BKPT; - } - return SQLITE_OK; -} - -/* -** Initialize the auxiliary information for a disk block. -** -** Return SQLITE_OK on success. If we see that the page does -** not contain a well-formed database page, then return -** SQLITE_CORRUPT. Note that a return of SQLITE_OK does not -** guarantee that the page is well-formed. It only shows that -** we failed to detect any corruption. -*/ -static int btreeInitPage(MemPage *pPage){ - - assert( pPage->pBt!=0 ); - assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - assert( pPage->pgno==sqlite3PagerPagenumber(pPage->pDbPage) ); - assert( pPage == sqlite3PagerGetExtra(pPage->pDbPage) ); - assert( pPage->aData == sqlite3PagerGetData(pPage->pDbPage) ); - - if( !pPage->isInit ){ - u16 pc; /* Address of a freeblock within pPage->aData[] */ - u8 hdr; /* Offset to beginning of page header */ - u8 *data; /* Equal to pPage->aData */ - BtShared *pBt; /* The main btree structure */ - int usableSize; /* Amount of usable space on each page */ - u16 cellOffset; /* Offset from start of page to first cell pointer */ - int nFree; /* Number of unused bytes on the page */ - int top; /* First byte of the cell content area */ - int iCellFirst; /* First allowable cell or freeblock offset */ - int iCellLast; /* Last possible cell or freeblock offset */ - - pBt = pPage->pBt; - - hdr = pPage->hdrOffset; - data = pPage->aData; - if( decodeFlags(pPage, data[hdr]) ) return SQLITE_CORRUPT_BKPT; - assert( pBt->pageSize>=512 && pBt->pageSize<=65536 ); - pPage->maskPage = (u16)(pBt->pageSize - 1); - pPage->nOverflow = 0; - usableSize = pBt->usableSize; - pPage->cellOffset = cellOffset = hdr + 12 - 4*pPage->leaf; - top = get2byteNotZero(&data[hdr+5]); - pPage->nCell = get2byte(&data[hdr+3]); - if( pPage->nCell>MX_CELL(pBt) ){ - /* To many cells for a single page. The page must be corrupt */ - return SQLITE_CORRUPT_BKPT; - } - testcase( pPage->nCell==MX_CELL(pBt) ); - - /* A malformed database page might cause us to read past the end - ** of page when parsing a cell. - ** - ** The following block of code checks early to see if a cell extends - ** past the end of a page boundary and causes SQLITE_CORRUPT to be - ** returned if it does. - */ - iCellFirst = cellOffset + 2*pPage->nCell; - iCellLast = usableSize - 4; -#if defined(SQLITE_ENABLE_OVERSIZE_CELL_CHECK) - { - int i; /* Index into the cell pointer array */ - int sz; /* Size of a cell */ - - if( !pPage->leaf ) iCellLast--; - for(i=0; inCell; i++){ - pc = get2byte(&data[cellOffset+i*2]); - testcase( pc==iCellFirst ); - testcase( pc==iCellLast ); - if( pciCellLast ){ - return SQLITE_CORRUPT_BKPT; - } - sz = cellSizePtr(pPage, &data[pc]); - testcase( pc+sz==usableSize ); - if( pc+sz>usableSize ){ - return SQLITE_CORRUPT_BKPT; - } - } - if( !pPage->leaf ) iCellLast++; - } -#endif - - /* Compute the total free space on the page */ - pc = get2byte(&data[hdr+1]); - nFree = data[hdr+7] + top; - while( pc>0 ){ - u16 next, size; - if( pciCellLast ){ - /* Start of free block is off the page */ - return SQLITE_CORRUPT_BKPT; - } - next = get2byte(&data[pc]); - size = get2byte(&data[pc+2]); - if( (next>0 && next<=pc+size+3) || pc+size>usableSize ){ - /* Free blocks must be in ascending order. And the last byte of - ** the free-block must lie on the database page. */ - return SQLITE_CORRUPT_BKPT; - } - nFree = nFree + size; - pc = next; - } - - /* At this point, nFree contains the sum of the offset to the start - ** of the cell-content area plus the number of free bytes within - ** the cell-content area. If this is greater than the usable-size - ** of the page, then the page must be corrupted. This check also - ** serves to verify that the offset to the start of the cell-content - ** area, according to the page header, lies within the page. - */ - if( nFree>usableSize ){ - return SQLITE_CORRUPT_BKPT; - } - pPage->nFree = (u16)(nFree - iCellFirst); - pPage->isInit = 1; - } - return SQLITE_OK; -} - -/* -** Set up a raw page so that it looks like a database page holding -** no entries. -*/ -static void zeroPage(MemPage *pPage, int flags){ - unsigned char *data = pPage->aData; - BtShared *pBt = pPage->pBt; - u8 hdr = pPage->hdrOffset; - u16 first; - - assert( sqlite3PagerPagenumber(pPage->pDbPage)==pPage->pgno ); - assert( sqlite3PagerGetExtra(pPage->pDbPage) == (void*)pPage ); - assert( sqlite3PagerGetData(pPage->pDbPage) == data ); - assert( sqlite3PagerIswriteable(pPage->pDbPage) ); - assert( sqlite3_mutex_held(pBt->mutex) ); - if( pBt->secureDelete ){ - memset(&data[hdr], 0, pBt->usableSize - hdr); - } - data[hdr] = (char)flags; - first = hdr + 8 + 4*((flags&PTF_LEAF)==0 ?1:0); - memset(&data[hdr+1], 0, 4); - data[hdr+7] = 0; - put2byte(&data[hdr+5], pBt->usableSize); - pPage->nFree = (u16)(pBt->usableSize - first); - decodeFlags(pPage, flags); - pPage->hdrOffset = hdr; - pPage->cellOffset = first; - pPage->nOverflow = 0; - assert( pBt->pageSize>=512 && pBt->pageSize<=65536 ); - pPage->maskPage = (u16)(pBt->pageSize - 1); - pPage->nCell = 0; - pPage->isInit = 1; -} - - -/* -** Convert a DbPage obtained from the pager into a MemPage used by -** the btree layer. -*/ -static MemPage *btreePageFromDbPage(DbPage *pDbPage, Pgno pgno, BtShared *pBt){ - MemPage *pPage = (MemPage*)sqlite3PagerGetExtra(pDbPage); - pPage->aData = sqlite3PagerGetData(pDbPage); - pPage->pDbPage = pDbPage; - pPage->pBt = pBt; - pPage->pgno = pgno; - pPage->hdrOffset = pPage->pgno==1 ? 100 : 0; - return pPage; -} - -/* -** Get a page from the pager. Initialize the MemPage.pBt and -** MemPage.aData elements if needed. -** -** If the noContent flag is set, it means that we do not care about -** the content of the page at this time. So do not go to the disk -** to fetch the content. Just fill in the content with zeros for now. -** If in the future we call sqlite3PagerWrite() on this page, that -** means we have started to be concerned about content and the disk -** read should occur at that point. -*/ -static int btreeGetPage( - BtShared *pBt, /* The btree */ - Pgno pgno, /* Number of the page to fetch */ - MemPage **ppPage, /* Return the page in this parameter */ - int noContent /* Do not load page content if true */ -){ - int rc; - DbPage *pDbPage; - - assert( sqlite3_mutex_held(pBt->mutex) ); - rc = sqlite3PagerAcquire(pBt->pPager, pgno, (DbPage**)&pDbPage, noContent); - if( rc ) return rc; - *ppPage = btreePageFromDbPage(pDbPage, pgno, pBt); - return SQLITE_OK; -} - -/* -** Retrieve a page from the pager cache. If the requested page is not -** already in the pager cache return NULL. Initialize the MemPage.pBt and -** MemPage.aData elements if needed. -*/ -static MemPage *btreePageLookup(BtShared *pBt, Pgno pgno){ - DbPage *pDbPage; - assert( sqlite3_mutex_held(pBt->mutex) ); - pDbPage = sqlite3PagerLookup(pBt->pPager, pgno); - if( pDbPage ){ - return btreePageFromDbPage(pDbPage, pgno, pBt); - } - return 0; -} - -/* -** Return the size of the database file in pages. If there is any kind of -** error, return ((unsigned int)-1). -*/ -static Pgno btreePagecount(BtShared *pBt){ - return pBt->nPage; -} -u32 sqlite3BtreeLastPage(Btree *p){ - assert( sqlite3BtreeHoldsMutex(p) ); - assert( ((p->pBt->nPage)&0x8000000)==0 ); - return (int)btreePagecount(p->pBt); -} - -/* -** Get a page from the pager and initialize it. This routine is just a -** convenience wrapper around separate calls to btreeGetPage() and -** btreeInitPage(). -** -** If an error occurs, then the value *ppPage is set to is undefined. It -** may remain unchanged, or it may be set to an invalid value. -*/ -static int getAndInitPage( - BtShared *pBt, /* The database file */ - Pgno pgno, /* Number of the page to get */ - MemPage **ppPage /* Write the page pointer here */ -){ - int rc; - assert( sqlite3_mutex_held(pBt->mutex) ); - - if( pgno>btreePagecount(pBt) ){ - rc = SQLITE_CORRUPT_BKPT; - }else{ - rc = btreeGetPage(pBt, pgno, ppPage, 0); - if( rc==SQLITE_OK ){ - rc = btreeInitPage(*ppPage); - if( rc!=SQLITE_OK ){ - releasePage(*ppPage); - } - } - } - - testcase( pgno==0 ); - assert( pgno!=0 || rc==SQLITE_CORRUPT ); - return rc; -} - -/* -** Release a MemPage. This should be called once for each prior -** call to btreeGetPage. -*/ -static void releasePage(MemPage *pPage){ - if( pPage ){ - assert( pPage->aData ); - assert( pPage->pBt ); - assert( sqlite3PagerGetExtra(pPage->pDbPage) == (void*)pPage ); - assert( sqlite3PagerGetData(pPage->pDbPage)==pPage->aData ); - assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - sqlite3PagerUnref(pPage->pDbPage); - } -} - -/* -** During a rollback, when the pager reloads information into the cache -** so that the cache is restored to its original state at the start of -** the transaction, for each page restored this routine is called. -** -** This routine needs to reset the extra data section at the end of the -** page to agree with the restored data. -*/ -static void pageReinit(DbPage *pData){ - MemPage *pPage; - pPage = (MemPage *)sqlite3PagerGetExtra(pData); - assert( sqlite3PagerPageRefcount(pData)>0 ); - if( pPage->isInit ){ - assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - pPage->isInit = 0; - if( sqlite3PagerPageRefcount(pData)>1 ){ - /* pPage might not be a btree page; it might be an overflow page - ** or ptrmap page or a free page. In those cases, the following - ** call to btreeInitPage() will likely return SQLITE_CORRUPT. - ** But no harm is done by this. And it is very important that - ** btreeInitPage() be called on every btree page so we make - ** the call for every page that comes in for re-initing. */ - btreeInitPage(pPage); - } - } -} - -/* -** Invoke the busy handler for a btree. -*/ -static int btreeInvokeBusyHandler(void *pArg){ - BtShared *pBt = (BtShared*)pArg; - assert( pBt->db ); - assert( sqlite3_mutex_held(pBt->db->mutex) ); - return sqlite3InvokeBusyHandler(&pBt->db->busyHandler); -} - -/* -** Open a database file. -** -** zFilename is the name of the database file. If zFilename is NULL -** then an ephemeral database is created. The ephemeral database might -** be exclusively in memory, or it might use a disk-based memory cache. -** Either way, the ephemeral database will be automatically deleted -** when sqlite3BtreeClose() is called. -** -** If zFilename is ":memory:" then an in-memory database is created -** that is automatically destroyed when it is closed. -** -** The "flags" parameter is a bitmask that might contain bits -** BTREE_OMIT_JOURNAL and/or BTREE_NO_READLOCK. The BTREE_NO_READLOCK -** bit is also set if the SQLITE_NoReadlock flags is set in db->flags. -** These flags are passed through into sqlite3PagerOpen() and must -** be the same values as PAGER_OMIT_JOURNAL and PAGER_NO_READLOCK. -** -** If the database is already opened in the same database connection -** and we are in shared cache mode, then the open will fail with an -** SQLITE_CONSTRAINT error. We cannot allow two or more BtShared -** objects in the same database connection since doing so will lead -** to problems with locking. -*/ -int sqlite3BtreeOpen( - sqlite3_vfs *pVfs, /* VFS to use for this b-tree */ - const char *zFilename, /* Name of the file containing the BTree database */ - sqlite3 *db, /* Associated database handle */ - Btree **ppBtree, /* Pointer to new Btree object written here */ - int flags, /* Options */ - int vfsFlags /* Flags passed through to sqlite3_vfs.xOpen() */ -){ - BtShared *pBt = 0; /* Shared part of btree structure */ - Btree *p; /* Handle to return */ - sqlite3_mutex *mutexOpen = 0; /* Prevents a race condition. Ticket #3537 */ - int rc = SQLITE_OK; /* Result code from this function */ - u8 nReserve; /* Byte of unused space on each page */ - unsigned char zDbHeader[100]; /* Database header content */ - - /* True if opening an ephemeral, temporary database */ - const int isTempDb = zFilename==0 || zFilename[0]==0; - - /* Set the variable isMemdb to true for an in-memory database, or - ** false for a file-based database. - */ -#ifdef SQLITE_OMIT_MEMORYDB - const int isMemdb = 0; -#else - const int isMemdb = (zFilename && strcmp(zFilename, ":memory:")==0) - || (isTempDb && sqlite3TempInMemory(db)); -#endif - - assert( db!=0 ); - assert( pVfs!=0 ); - assert( sqlite3_mutex_held(db->mutex) ); - assert( (flags&0xff)==flags ); /* flags fit in 8 bits */ - - /* Only a BTREE_SINGLE database can be BTREE_UNORDERED */ - assert( (flags & BTREE_UNORDERED)==0 || (flags & BTREE_SINGLE)!=0 ); - - /* A BTREE_SINGLE database is always a temporary and/or ephemeral */ - assert( (flags & BTREE_SINGLE)==0 || isTempDb ); - - if( db->flags & SQLITE_NoReadlock ){ - flags |= BTREE_NO_READLOCK; - } - if( isMemdb ){ - flags |= BTREE_MEMORY; - } - if( (vfsFlags & SQLITE_OPEN_MAIN_DB)!=0 && (isMemdb || isTempDb) ){ - vfsFlags = (vfsFlags & ~SQLITE_OPEN_MAIN_DB) | SQLITE_OPEN_TEMP_DB; - } - p = sqlite3MallocZero(sizeof(Btree)); - if( !p ){ - return SQLITE_NOMEM; - } - p->inTrans = TRANS_NONE; - p->db = db; -#ifndef SQLITE_OMIT_SHARED_CACHE - p->lock.pBtree = p; - p->lock.iTable = 1; -#endif - -#if !defined(SQLITE_OMIT_SHARED_CACHE) && !defined(SQLITE_OMIT_DISKIO) - /* - ** If this Btree is a candidate for shared cache, try to find an - ** existing BtShared object that we can share with - */ - if( isMemdb==0 && isTempDb==0 ){ - if( vfsFlags & SQLITE_OPEN_SHAREDCACHE ){ - int nFullPathname = pVfs->mxPathname+1; - char *zFullPathname = sqlite3Malloc(nFullPathname); - MUTEX_LOGIC( sqlite3_mutex *mutexShared; ) - p->sharable = 1; - if( !zFullPathname ){ - sqlite3_free(p); - return SQLITE_NOMEM; - } - sqlite3OsFullPathname(pVfs, zFilename, nFullPathname, zFullPathname); -#if SQLITE_THREADSAFE - mutexOpen = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_OPEN); - sqlite3_mutex_enter(mutexOpen); - mutexShared = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); - sqlite3_mutex_enter(mutexShared); -#endif - for(pBt=GLOBAL(BtShared*,sqlite3SharedCacheList); pBt; pBt=pBt->pNext){ - assert( pBt->nRef>0 ); - if( 0==strcmp(zFullPathname, sqlite3PagerFilename(pBt->pPager)) - && sqlite3PagerVfs(pBt->pPager)==pVfs ){ - int iDb; - for(iDb=db->nDb-1; iDb>=0; iDb--){ - Btree *pExisting = db->aDb[iDb].pBt; - if( pExisting && pExisting->pBt==pBt ){ - sqlite3_mutex_leave(mutexShared); - sqlite3_mutex_leave(mutexOpen); - sqlite3_free(zFullPathname); - sqlite3_free(p); - return SQLITE_CONSTRAINT; - } - } - p->pBt = pBt; - pBt->nRef++; - break; - } - } - sqlite3_mutex_leave(mutexShared); - sqlite3_free(zFullPathname); - } -#ifdef SQLITE_DEBUG - else{ - /* In debug mode, we mark all persistent databases as sharable - ** even when they are not. This exercises the locking code and - ** gives more opportunity for asserts(sqlite3_mutex_held()) - ** statements to find locking problems. - */ - p->sharable = 1; - } -#endif - } -#endif - if( pBt==0 ){ - /* - ** The following asserts make sure that structures used by the btree are - ** the right size. This is to guard against size changes that result - ** when compiling on a different architecture. - */ - assert( sizeof(i64)==8 || sizeof(i64)==4 ); - assert( sizeof(u64)==8 || sizeof(u64)==4 ); - assert( sizeof(u32)==4 ); - assert( sizeof(u16)==2 ); - assert( sizeof(Pgno)==4 ); - - pBt = sqlite3MallocZero( sizeof(*pBt) ); - if( pBt==0 ){ - rc = SQLITE_NOMEM; - goto btree_open_out; - } - rc = sqlite3PagerOpen(pVfs, &pBt->pPager, zFilename, - EXTRA_SIZE, flags, vfsFlags, pageReinit); - if( rc==SQLITE_OK ){ - rc = sqlite3PagerReadFileheader(pBt->pPager,sizeof(zDbHeader),zDbHeader); - } - if( rc!=SQLITE_OK ){ - goto btree_open_out; - } - pBt->openFlags = (u8)flags; - pBt->db = db; - sqlite3PagerSetBusyhandler(pBt->pPager, btreeInvokeBusyHandler, pBt); - p->pBt = pBt; - - pBt->pCursor = 0; - pBt->pPage1 = 0; - pBt->readOnly = sqlite3PagerIsreadonly(pBt->pPager); -#ifdef SQLITE_SECURE_DELETE - pBt->secureDelete = 1; -#endif - pBt->pageSize = (zDbHeader[16]<<8) | (zDbHeader[17]<<16); - if( pBt->pageSize<512 || pBt->pageSize>SQLITE_MAX_PAGE_SIZE - || ((pBt->pageSize-1)&pBt->pageSize)!=0 ){ - pBt->pageSize = 0; -#ifndef SQLITE_OMIT_AUTOVACUUM - /* If the magic name ":memory:" will create an in-memory database, then - ** leave the autoVacuum mode at 0 (do not auto-vacuum), even if - ** SQLITE_DEFAULT_AUTOVACUUM is true. On the other hand, if - ** SQLITE_OMIT_MEMORYDB has been defined, then ":memory:" is just a - ** regular file-name. In this case the auto-vacuum applies as per normal. - */ - if( zFilename && !isMemdb ){ - pBt->autoVacuum = (SQLITE_DEFAULT_AUTOVACUUM ? 1 : 0); - pBt->incrVacuum = (SQLITE_DEFAULT_AUTOVACUUM==2 ? 1 : 0); - } -#endif - nReserve = 0; - }else{ - nReserve = zDbHeader[20]; - pBt->pageSizeFixed = 1; -#ifndef SQLITE_OMIT_AUTOVACUUM - pBt->autoVacuum = (get4byte(&zDbHeader[36 + 4*4])?1:0); - pBt->incrVacuum = (get4byte(&zDbHeader[36 + 7*4])?1:0); -#endif - } - rc = sqlite3PagerSetPagesize(pBt->pPager, &pBt->pageSize, nReserve); - if( rc ) goto btree_open_out; - pBt->usableSize = pBt->pageSize - nReserve; - assert( (pBt->pageSize & 7)==0 ); /* 8-byte alignment of pageSize */ - -#if !defined(SQLITE_OMIT_SHARED_CACHE) && !defined(SQLITE_OMIT_DISKIO) - /* Add the new BtShared object to the linked list sharable BtShareds. - */ - if( p->sharable ){ - MUTEX_LOGIC( sqlite3_mutex *mutexShared; ) - pBt->nRef = 1; - MUTEX_LOGIC( mutexShared = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);) - if( SQLITE_THREADSAFE && sqlite3GlobalConfig.bCoreMutex ){ - pBt->mutex = sqlite3MutexAlloc(SQLITE_MUTEX_FAST); - if( pBt->mutex==0 ){ - rc = SQLITE_NOMEM; - db->mallocFailed = 0; - goto btree_open_out; - } - } - sqlite3_mutex_enter(mutexShared); - pBt->pNext = GLOBAL(BtShared*,sqlite3SharedCacheList); - GLOBAL(BtShared*,sqlite3SharedCacheList) = pBt; - sqlite3_mutex_leave(mutexShared); - } -#endif - } - -#if !defined(SQLITE_OMIT_SHARED_CACHE) && !defined(SQLITE_OMIT_DISKIO) - /* If the new Btree uses a sharable pBtShared, then link the new - ** Btree into the list of all sharable Btrees for the same connection. - ** The list is kept in ascending order by pBt address. - */ - if( p->sharable ){ - int i; - Btree *pSib; - for(i=0; inDb; i++){ - if( (pSib = db->aDb[i].pBt)!=0 && pSib->sharable ){ - while( pSib->pPrev ){ pSib = pSib->pPrev; } - if( p->pBtpBt ){ - p->pNext = pSib; - p->pPrev = 0; - pSib->pPrev = p; - }else{ - while( pSib->pNext && pSib->pNext->pBtpBt ){ - pSib = pSib->pNext; - } - p->pNext = pSib->pNext; - p->pPrev = pSib; - if( p->pNext ){ - p->pNext->pPrev = p; - } - pSib->pNext = p; - } - break; - } - } - } -#endif - *ppBtree = p; - -btree_open_out: - if( rc!=SQLITE_OK ){ - if( pBt && pBt->pPager ){ - sqlite3PagerClose(pBt->pPager); - } - sqlite3_free(pBt); - sqlite3_free(p); - *ppBtree = 0; - }else{ - /* If the B-Tree was successfully opened, set the pager-cache size to the - ** default value. Except, when opening on an existing shared pager-cache, - ** do not change the pager-cache size. - */ - if( sqlite3BtreeSchema(p, 0, 0)==0 ){ - sqlite3PagerSetCachesize(p->pBt->pPager, SQLITE_DEFAULT_CACHE_SIZE); - } - } - if( mutexOpen ){ - assert( sqlite3_mutex_held(mutexOpen) ); - sqlite3_mutex_leave(mutexOpen); - } - return rc; -} - -/* -** Decrement the BtShared.nRef counter. When it reaches zero, -** remove the BtShared structure from the sharing list. Return -** true if the BtShared.nRef counter reaches zero and return -** false if it is still positive. -*/ -static int removeFromSharingList(BtShared *pBt){ -#ifndef SQLITE_OMIT_SHARED_CACHE - MUTEX_LOGIC( sqlite3_mutex *pMaster; ) - BtShared *pList; - int removed = 0; - - assert( sqlite3_mutex_notheld(pBt->mutex) ); - MUTEX_LOGIC( pMaster = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); ) - sqlite3_mutex_enter(pMaster); - pBt->nRef--; - if( pBt->nRef<=0 ){ - if( GLOBAL(BtShared*,sqlite3SharedCacheList)==pBt ){ - GLOBAL(BtShared*,sqlite3SharedCacheList) = pBt->pNext; - }else{ - pList = GLOBAL(BtShared*,sqlite3SharedCacheList); - while( ALWAYS(pList) && pList->pNext!=pBt ){ - pList=pList->pNext; - } - if( ALWAYS(pList) ){ - pList->pNext = pBt->pNext; - } - } - if( SQLITE_THREADSAFE ){ - sqlite3_mutex_free(pBt->mutex); - } - removed = 1; - } - sqlite3_mutex_leave(pMaster); - return removed; -#else - return 1; -#endif -} - -/* -** Make sure pBt->pTmpSpace points to an allocation of -** MX_CELL_SIZE(pBt) bytes. -*/ -static void allocateTempSpace(BtShared *pBt){ - if( !pBt->pTmpSpace ){ - pBt->pTmpSpace = sqlite3PageMalloc( pBt->pageSize ); - } -} - -/* -** Free the pBt->pTmpSpace allocation -*/ -static void freeTempSpace(BtShared *pBt){ - sqlite3PageFree( pBt->pTmpSpace); - pBt->pTmpSpace = 0; -} - -/* -** Close an open database and invalidate all cursors. -*/ -int sqlite3BtreeClose(Btree *p){ - BtShared *pBt = p->pBt; - BtCursor *pCur; - - /* Close all cursors opened via this handle. */ - assert( sqlite3_mutex_held(p->db->mutex) ); - sqlite3BtreeEnter(p); - pCur = pBt->pCursor; - while( pCur ){ - BtCursor *pTmp = pCur; - pCur = pCur->pNext; - if( pTmp->pBtree==p ){ - sqlite3BtreeCloseCursor(pTmp); - } - } - - /* Rollback any active transaction and free the handle structure. - ** The call to sqlite3BtreeRollback() drops any table-locks held by - ** this handle. - */ - sqlite3BtreeRollback(p); - sqlite3BtreeLeave(p); - - /* If there are still other outstanding references to the shared-btree - ** structure, return now. The remainder of this procedure cleans - ** up the shared-btree. - */ - assert( p->wantToLock==0 && p->locked==0 ); - if( !p->sharable || removeFromSharingList(pBt) ){ - /* The pBt is no longer on the sharing list, so we can access - ** it without having to hold the mutex. - ** - ** Clean out and delete the BtShared object. - */ - assert( !pBt->pCursor ); - sqlite3PagerClose(pBt->pPager); - if( pBt->xFreeSchema && pBt->pSchema ){ - pBt->xFreeSchema(pBt->pSchema); - } - sqlite3DbFree(0, pBt->pSchema); - freeTempSpace(pBt); - sqlite3_free(pBt); - } - -#ifndef SQLITE_OMIT_SHARED_CACHE - assert( p->wantToLock==0 ); - assert( p->locked==0 ); - if( p->pPrev ) p->pPrev->pNext = p->pNext; - if( p->pNext ) p->pNext->pPrev = p->pPrev; -#endif - - sqlite3_free(p); - return SQLITE_OK; -} - -/* -** Change the limit on the number of pages allowed in the cache. -** -** The maximum number of cache pages is set to the absolute -** value of mxPage. If mxPage is negative, the pager will -** operate asynchronously - it will not stop to do fsync()s -** to insure data is written to the disk surface before -** continuing. Transactions still work if synchronous is off, -** and the database cannot be corrupted if this program -** crashes. But if the operating system crashes or there is -** an abrupt power failure when synchronous is off, the database -** could be left in an inconsistent and unrecoverable state. -** Synchronous is on by default so database corruption is not -** normally a worry. -*/ -int sqlite3BtreeSetCacheSize(Btree *p, int mxPage){ - BtShared *pBt = p->pBt; - assert( sqlite3_mutex_held(p->db->mutex) ); - sqlite3BtreeEnter(p); - sqlite3PagerSetCachesize(pBt->pPager, mxPage); - sqlite3BtreeLeave(p); - return SQLITE_OK; -} - -/* -** Change the way data is synced to disk in order to increase or decrease -** how well the database resists damage due to OS crashes and power -** failures. Level 1 is the same as asynchronous (no syncs() occur and -** there is a high probability of damage) Level 2 is the default. There -** is a very low but non-zero probability of damage. Level 3 reduces the -** probability of damage to near zero but with a write performance reduction. -*/ -#ifndef SQLITE_OMIT_PAGER_PRAGMAS -int sqlite3BtreeSetSafetyLevel( - Btree *p, /* The btree to set the safety level on */ - int level, /* PRAGMA synchronous. 1=OFF, 2=NORMAL, 3=FULL */ - int fullSync, /* PRAGMA fullfsync. */ - int ckptFullSync /* PRAGMA checkpoint_fullfync */ -){ - BtShared *pBt = p->pBt; - assert( sqlite3_mutex_held(p->db->mutex) ); - assert( level>=1 && level<=3 ); - sqlite3BtreeEnter(p); - sqlite3PagerSetSafetyLevel(pBt->pPager, level, fullSync, ckptFullSync); - sqlite3BtreeLeave(p); - return SQLITE_OK; -} -#endif - -/* -** Return TRUE if the given btree is set to safety level 1. In other -** words, return TRUE if no sync() occurs on the disk files. -*/ -int sqlite3BtreeSyncDisabled(Btree *p){ - BtShared *pBt = p->pBt; - int rc; - assert( sqlite3_mutex_held(p->db->mutex) ); - sqlite3BtreeEnter(p); - assert( pBt && pBt->pPager ); - rc = sqlite3PagerNosync(pBt->pPager); - sqlite3BtreeLeave(p); - return rc; -} - -/* -** Change the default pages size and the number of reserved bytes per page. -** Or, if the page size has already been fixed, return SQLITE_READONLY -** without changing anything. -** -** The page size must be a power of 2 between 512 and 65536. If the page -** size supplied does not meet this constraint then the page size is not -** changed. -** -** Page sizes are constrained to be a power of two so that the region -** of the database file used for locking (beginning at PENDING_BYTE, -** the first byte past the 1GB boundary, 0x40000000) needs to occur -** at the beginning of a page. -** -** If parameter nReserve is less than zero, then the number of reserved -** bytes per page is left unchanged. -** -** If the iFix!=0 then the pageSizeFixed flag is set so that the page size -** and autovacuum mode can no longer be changed. -*/ -int sqlite3BtreeSetPageSize(Btree *p, int pageSize, int nReserve, int iFix){ - int rc = SQLITE_OK; - BtShared *pBt = p->pBt; - assert( nReserve>=-1 && nReserve<=255 ); - sqlite3BtreeEnter(p); - if( pBt->pageSizeFixed ){ - sqlite3BtreeLeave(p); - return SQLITE_READONLY; - } - if( nReserve<0 ){ - nReserve = pBt->pageSize - pBt->usableSize; - } - assert( nReserve>=0 && nReserve<=255 ); - if( pageSize>=512 && pageSize<=SQLITE_MAX_PAGE_SIZE && - ((pageSize-1)&pageSize)==0 ){ - assert( (pageSize & 7)==0 ); - assert( !pBt->pPage1 && !pBt->pCursor ); - pBt->pageSize = (u32)pageSize; - freeTempSpace(pBt); - } - rc = sqlite3PagerSetPagesize(pBt->pPager, &pBt->pageSize, nReserve); - pBt->usableSize = pBt->pageSize - (u16)nReserve; - if( iFix ) pBt->pageSizeFixed = 1; - sqlite3BtreeLeave(p); - return rc; -} - -/* -** Return the currently defined page size -*/ -int sqlite3BtreeGetPageSize(Btree *p){ - return p->pBt->pageSize; -} - -#if !defined(SQLITE_OMIT_PAGER_PRAGMAS) || !defined(SQLITE_OMIT_VACUUM) -/* -** Return the number of bytes of space at the end of every page that -** are intentually left unused. This is the "reserved" space that is -** sometimes used by extensions. -*/ -int sqlite3BtreeGetReserve(Btree *p){ - int n; - sqlite3BtreeEnter(p); - n = p->pBt->pageSize - p->pBt->usableSize; - sqlite3BtreeLeave(p); - return n; -} - -/* -** Set the maximum page count for a database if mxPage is positive. -** No changes are made if mxPage is 0 or negative. -** Regardless of the value of mxPage, return the maximum page count. -*/ -int sqlite3BtreeMaxPageCount(Btree *p, int mxPage){ - int n; - sqlite3BtreeEnter(p); - n = sqlite3PagerMaxPageCount(p->pBt->pPager, mxPage); - sqlite3BtreeLeave(p); - return n; -} - -/* -** Set the secureDelete flag if newFlag is 0 or 1. If newFlag is -1, -** then make no changes. Always return the value of the secureDelete -** setting after the change. -*/ -int sqlite3BtreeSecureDelete(Btree *p, int newFlag){ - int b; - if( p==0 ) return 0; - sqlite3BtreeEnter(p); - if( newFlag>=0 ){ - p->pBt->secureDelete = (newFlag!=0) ? 1 : 0; - } - b = p->pBt->secureDelete; - sqlite3BtreeLeave(p); - return b; -} -#endif /* !defined(SQLITE_OMIT_PAGER_PRAGMAS) || !defined(SQLITE_OMIT_VACUUM) */ - -/* -** Change the 'auto-vacuum' property of the database. If the 'autoVacuum' -** parameter is non-zero, then auto-vacuum mode is enabled. If zero, it -** is disabled. The default value for the auto-vacuum property is -** determined by the SQLITE_DEFAULT_AUTOVACUUM macro. -*/ -int sqlite3BtreeSetAutoVacuum(Btree *p, int autoVacuum){ -#ifdef SQLITE_OMIT_AUTOVACUUM - return SQLITE_READONLY; -#else - BtShared *pBt = p->pBt; - int rc = SQLITE_OK; - u8 av = (u8)autoVacuum; - - sqlite3BtreeEnter(p); - if( pBt->pageSizeFixed && (av ?1:0)!=pBt->autoVacuum ){ - rc = SQLITE_READONLY; - }else{ - pBt->autoVacuum = av ?1:0; - pBt->incrVacuum = av==2 ?1:0; - } - sqlite3BtreeLeave(p); - return rc; -#endif -} - -/* -** Return the value of the 'auto-vacuum' property. If auto-vacuum is -** enabled 1 is returned. Otherwise 0. -*/ -int sqlite3BtreeGetAutoVacuum(Btree *p){ -#ifdef SQLITE_OMIT_AUTOVACUUM - return BTREE_AUTOVACUUM_NONE; -#else - int rc; - sqlite3BtreeEnter(p); - rc = ( - (!p->pBt->autoVacuum)?BTREE_AUTOVACUUM_NONE: - (!p->pBt->incrVacuum)?BTREE_AUTOVACUUM_FULL: - BTREE_AUTOVACUUM_INCR - ); - sqlite3BtreeLeave(p); - return rc; -#endif -} - - -/* -** Get a reference to pPage1 of the database file. This will -** also acquire a readlock on that file. -** -** SQLITE_OK is returned on success. If the file is not a -** well-formed database file, then SQLITE_CORRUPT is returned. -** SQLITE_BUSY is returned if the database is locked. SQLITE_NOMEM -** is returned if we run out of memory. -*/ -static int lockBtree(BtShared *pBt){ - int rc; /* Result code from subfunctions */ - MemPage *pPage1; /* Page 1 of the database file */ - int nPage; /* Number of pages in the database */ - int nPageFile = 0; /* Number of pages in the database file */ - int nPageHeader; /* Number of pages in the database according to hdr */ - - assert( sqlite3_mutex_held(pBt->mutex) ); - assert( pBt->pPage1==0 ); - rc = sqlite3PagerSharedLock(pBt->pPager); - if( rc!=SQLITE_OK ) return rc; - rc = btreeGetPage(pBt, 1, &pPage1, 0); - if( rc!=SQLITE_OK ) return rc; - - /* Do some checking to help insure the file we opened really is - ** a valid database file. - */ - nPage = nPageHeader = get4byte(28+(u8*)pPage1->aData); - sqlite3PagerPagecount(pBt->pPager, &nPageFile); - if( nPage==0 || memcmp(24+(u8*)pPage1->aData, 92+(u8*)pPage1->aData,4)!=0 ){ - nPage = nPageFile; - } - if( nPage>0 ){ - u32 pageSize; - u32 usableSize; - u8 *page1 = pPage1->aData; - rc = SQLITE_NOTADB; - if( memcmp(page1, zMagicHeader, 16)!=0 ){ - goto page1_init_failed; - } - -#ifdef SQLITE_OMIT_WAL - if( page1[18]>1 ){ - pBt->readOnly = 1; - } - if( page1[19]>1 ){ - goto page1_init_failed; - } -#else - if( page1[18]>2 ){ - pBt->readOnly = 1; - } - if( page1[19]>2 ){ - goto page1_init_failed; - } - - /* If the write version is set to 2, this database should be accessed - ** in WAL mode. If the log is not already open, open it now. Then - ** return SQLITE_OK and return without populating BtShared.pPage1. - ** The caller detects this and calls this function again. This is - ** required as the version of page 1 currently in the page1 buffer - ** may not be the latest version - there may be a newer one in the log - ** file. - */ - if( page1[19]==2 && pBt->doNotUseWAL==0 ){ - int isOpen = 0; - rc = sqlite3PagerOpenWal(pBt->pPager, &isOpen); - if( rc!=SQLITE_OK ){ - goto page1_init_failed; - }else if( isOpen==0 ){ - releasePage(pPage1); - return SQLITE_OK; - } - rc = SQLITE_NOTADB; - } -#endif - - /* The maximum embedded fraction must be exactly 25%. And the minimum - ** embedded fraction must be 12.5% for both leaf-data and non-leaf-data. - ** The original design allowed these amounts to vary, but as of - ** version 3.6.0, we require them to be fixed. - */ - if( memcmp(&page1[21], "\100\040\040",3)!=0 ){ - goto page1_init_failed; - } - pageSize = (page1[16]<<8) | (page1[17]<<16); - if( ((pageSize-1)&pageSize)!=0 - || pageSize>SQLITE_MAX_PAGE_SIZE - || pageSize<=256 - ){ - goto page1_init_failed; - } - assert( (pageSize & 7)==0 ); - usableSize = pageSize - page1[20]; - if( (u32)pageSize!=pBt->pageSize ){ - /* After reading the first page of the database assuming a page size - ** of BtShared.pageSize, we have discovered that the page-size is - ** actually pageSize. Unlock the database, leave pBt->pPage1 at - ** zero and return SQLITE_OK. The caller will call this function - ** again with the correct page-size. - */ - releasePage(pPage1); - pBt->usableSize = usableSize; - pBt->pageSize = pageSize; - freeTempSpace(pBt); - rc = sqlite3PagerSetPagesize(pBt->pPager, &pBt->pageSize, - pageSize-usableSize); - return rc; - } - if( (pBt->db->flags & SQLITE_RecoveryMode)==0 && nPage>nPageFile ){ - rc = SQLITE_CORRUPT_BKPT; - goto page1_init_failed; - } - if( usableSize<480 ){ - goto page1_init_failed; - } - pBt->pageSize = pageSize; - pBt->usableSize = usableSize; -#ifndef SQLITE_OMIT_AUTOVACUUM - pBt->autoVacuum = (get4byte(&page1[36 + 4*4])?1:0); - pBt->incrVacuum = (get4byte(&page1[36 + 7*4])?1:0); -#endif - } - - /* maxLocal is the maximum amount of payload to store locally for - ** a cell. Make sure it is small enough so that at least minFanout - ** cells can will fit on one page. We assume a 10-byte page header. - ** Besides the payload, the cell must store: - ** 2-byte pointer to the cell - ** 4-byte child pointer - ** 9-byte nKey value - ** 4-byte nData value - ** 4-byte overflow page pointer - ** So a cell consists of a 2-byte pointer, a header which is as much as - ** 17 bytes long, 0 to N bytes of payload, and an optional 4 byte overflow - ** page pointer. - */ - pBt->maxLocal = (u16)((pBt->usableSize-12)*64/255 - 23); - pBt->minLocal = (u16)((pBt->usableSize-12)*32/255 - 23); - pBt->maxLeaf = (u16)(pBt->usableSize - 35); - pBt->minLeaf = (u16)((pBt->usableSize-12)*32/255 - 23); - assert( pBt->maxLeaf + 23 <= MX_CELL_SIZE(pBt) ); - pBt->pPage1 = pPage1; - pBt->nPage = nPage; - return SQLITE_OK; - -page1_init_failed: - releasePage(pPage1); - pBt->pPage1 = 0; - return rc; -} - -/* -** If there are no outstanding cursors and we are not in the middle -** of a transaction but there is a read lock on the database, then -** this routine unrefs the first page of the database file which -** has the effect of releasing the read lock. -** -** If there is a transaction in progress, this routine is a no-op. -*/ -static void unlockBtreeIfUnused(BtShared *pBt){ - assert( sqlite3_mutex_held(pBt->mutex) ); - assert( pBt->pCursor==0 || pBt->inTransaction>TRANS_NONE ); - if( pBt->inTransaction==TRANS_NONE && pBt->pPage1!=0 ){ - assert( pBt->pPage1->aData ); - assert( sqlite3PagerRefcount(pBt->pPager)==1 ); - assert( pBt->pPage1->aData ); - releasePage(pBt->pPage1); - pBt->pPage1 = 0; - } -} - -/* -** If pBt points to an empty file then convert that empty file -** into a new empty database by initializing the first page of -** the database. -*/ -static int newDatabase(BtShared *pBt){ - MemPage *pP1; - unsigned char *data; - int rc; - - assert( sqlite3_mutex_held(pBt->mutex) ); - if( pBt->nPage>0 ){ - return SQLITE_OK; - } - pP1 = pBt->pPage1; - assert( pP1!=0 ); - data = pP1->aData; - rc = sqlite3PagerWrite(pP1->pDbPage); - if( rc ) return rc; - memcpy(data, zMagicHeader, sizeof(zMagicHeader)); - assert( sizeof(zMagicHeader)==16 ); - data[16] = (u8)((pBt->pageSize>>8)&0xff); - data[17] = (u8)((pBt->pageSize>>16)&0xff); - data[18] = 1; - data[19] = 1; - assert( pBt->usableSize<=pBt->pageSize && pBt->usableSize+255>=pBt->pageSize); - data[20] = (u8)(pBt->pageSize - pBt->usableSize); - data[21] = 64; - data[22] = 32; - data[23] = 32; - memset(&data[24], 0, 100-24); - zeroPage(pP1, PTF_INTKEY|PTF_LEAF|PTF_LEAFDATA ); - pBt->pageSizeFixed = 1; -#ifndef SQLITE_OMIT_AUTOVACUUM - assert( pBt->autoVacuum==1 || pBt->autoVacuum==0 ); - assert( pBt->incrVacuum==1 || pBt->incrVacuum==0 ); - put4byte(&data[36 + 4*4], pBt->autoVacuum); - put4byte(&data[36 + 7*4], pBt->incrVacuum); -#endif - pBt->nPage = 1; - data[31] = 1; - return SQLITE_OK; -} - -/* -** Attempt to start a new transaction. A write-transaction -** is started if the second argument is nonzero, otherwise a read- -** transaction. If the second argument is 2 or more and exclusive -** transaction is started, meaning that no other process is allowed -** to access the database. A preexisting transaction may not be -** upgraded to exclusive by calling this routine a second time - the -** exclusivity flag only works for a new transaction. -** -** A write-transaction must be started before attempting any -** changes to the database. None of the following routines -** will work unless a transaction is started first: -** -** sqlite3BtreeCreateTable() -** sqlite3BtreeCreateIndex() -** sqlite3BtreeClearTable() -** sqlite3BtreeDropTable() -** sqlite3BtreeInsert() -** sqlite3BtreeDelete() -** sqlite3BtreeUpdateMeta() -** -** If an initial attempt to acquire the lock fails because of lock contention -** and the database was previously unlocked, then invoke the busy handler -** if there is one. But if there was previously a read-lock, do not -** invoke the busy handler - just return SQLITE_BUSY. SQLITE_BUSY is -** returned when there is already a read-lock in order to avoid a deadlock. -** -** Suppose there are two processes A and B. A has a read lock and B has -** a reserved lock. B tries to promote to exclusive but is blocked because -** of A's read lock. A tries to promote to reserved but is blocked by B. -** One or the other of the two processes must give way or there can be -** no progress. By returning SQLITE_BUSY and not invoking the busy callback -** when A already has a read lock, we encourage A to give up and let B -** proceed. -*/ -int sqlite3BtreeBeginTrans(Btree *p, int wrflag){ - sqlite3 *pBlock = 0; - BtShared *pBt = p->pBt; - int rc = SQLITE_OK; - - sqlite3BtreeEnter(p); - btreeIntegrity(p); - - /* If the btree is already in a write-transaction, or it - ** is already in a read-transaction and a read-transaction - ** is requested, this is a no-op. - */ - if( p->inTrans==TRANS_WRITE || (p->inTrans==TRANS_READ && !wrflag) ){ - goto trans_begun; - } - - /* Write transactions are not possible on a read-only database */ - if( pBt->readOnly && wrflag ){ - rc = SQLITE_READONLY; - goto trans_begun; - } - -#ifndef SQLITE_OMIT_SHARED_CACHE - /* If another database handle has already opened a write transaction - ** on this shared-btree structure and a second write transaction is - ** requested, return SQLITE_LOCKED. - */ - if( (wrflag && pBt->inTransaction==TRANS_WRITE) || pBt->isPending ){ - pBlock = pBt->pWriter->db; - }else if( wrflag>1 ){ - BtLock *pIter; - for(pIter=pBt->pLock; pIter; pIter=pIter->pNext){ - if( pIter->pBtree!=p ){ - pBlock = pIter->pBtree->db; - break; - } - } - } - if( pBlock ){ - sqlite3ConnectionBlocked(p->db, pBlock); - rc = SQLITE_LOCKED_SHAREDCACHE; - goto trans_begun; - } -#endif - - /* Any read-only or read-write transaction implies a read-lock on - ** page 1. So if some other shared-cache client already has a write-lock - ** on page 1, the transaction cannot be opened. */ - rc = querySharedCacheTableLock(p, MASTER_ROOT, READ_LOCK); - if( SQLITE_OK!=rc ) goto trans_begun; - - pBt->initiallyEmpty = (u8)(pBt->nPage==0); - do { - /* Call lockBtree() until either pBt->pPage1 is populated or - ** lockBtree() returns something other than SQLITE_OK. lockBtree() - ** may return SQLITE_OK but leave pBt->pPage1 set to 0 if after - ** reading page 1 it discovers that the page-size of the database - ** file is not pBt->pageSize. In this case lockBtree() will update - ** pBt->pageSize to the page-size of the file on disk. - */ - while( pBt->pPage1==0 && SQLITE_OK==(rc = lockBtree(pBt)) ); - - if( rc==SQLITE_OK && wrflag ){ - if( pBt->readOnly ){ - rc = SQLITE_READONLY; - }else{ - rc = sqlite3PagerBegin(pBt->pPager,wrflag>1,sqlite3TempInMemory(p->db)); - if( rc==SQLITE_OK ){ - rc = newDatabase(pBt); - } - } - } - - if( rc!=SQLITE_OK ){ - unlockBtreeIfUnused(pBt); - } - }while( (rc&0xFF)==SQLITE_BUSY && pBt->inTransaction==TRANS_NONE && - btreeInvokeBusyHandler(pBt) ); - - if( rc==SQLITE_OK ){ - if( p->inTrans==TRANS_NONE ){ - pBt->nTransaction++; -#ifndef SQLITE_OMIT_SHARED_CACHE - if( p->sharable ){ - assert( p->lock.pBtree==p && p->lock.iTable==1 ); - p->lock.eLock = READ_LOCK; - p->lock.pNext = pBt->pLock; - pBt->pLock = &p->lock; - } -#endif - } - p->inTrans = (wrflag?TRANS_WRITE:TRANS_READ); - if( p->inTrans>pBt->inTransaction ){ - pBt->inTransaction = p->inTrans; - } - if( wrflag ){ - MemPage *pPage1 = pBt->pPage1; -#ifndef SQLITE_OMIT_SHARED_CACHE - assert( !pBt->pWriter ); - pBt->pWriter = p; - pBt->isExclusive = (u8)(wrflag>1); -#endif - - /* If the db-size header field is incorrect (as it may be if an old - ** client has been writing the database file), update it now. Doing - ** this sooner rather than later means the database size can safely - ** re-read the database size from page 1 if a savepoint or transaction - ** rollback occurs within the transaction. - */ - if( pBt->nPage!=get4byte(&pPage1->aData[28]) ){ - rc = sqlite3PagerWrite(pPage1->pDbPage); - if( rc==SQLITE_OK ){ - put4byte(&pPage1->aData[28], pBt->nPage); - } - } - } - } - - -trans_begun: - if( rc==SQLITE_OK && wrflag ){ - /* This call makes sure that the pager has the correct number of - ** open savepoints. If the second parameter is greater than 0 and - ** the sub-journal is not already open, then it will be opened here. - */ - rc = sqlite3PagerOpenSavepoint(pBt->pPager, p->db->nSavepoint); - } - - btreeIntegrity(p); - sqlite3BtreeLeave(p); - return rc; -} - -#ifndef SQLITE_OMIT_AUTOVACUUM - -/* -** Set the pointer-map entries for all children of page pPage. Also, if -** pPage contains cells that point to overflow pages, set the pointer -** map entries for the overflow pages as well. -*/ -static int setChildPtrmaps(MemPage *pPage){ - int i; /* Counter variable */ - int nCell; /* Number of cells in page pPage */ - int rc; /* Return code */ - BtShared *pBt = pPage->pBt; - u8 isInitOrig = pPage->isInit; - Pgno pgno = pPage->pgno; - - assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - rc = btreeInitPage(pPage); - if( rc!=SQLITE_OK ){ - goto set_child_ptrmaps_out; - } - nCell = pPage->nCell; - - for(i=0; ileaf ){ - Pgno childPgno = get4byte(pCell); - ptrmapPut(pBt, childPgno, PTRMAP_BTREE, pgno, &rc); - } - } - - if( !pPage->leaf ){ - Pgno childPgno = get4byte(&pPage->aData[pPage->hdrOffset+8]); - ptrmapPut(pBt, childPgno, PTRMAP_BTREE, pgno, &rc); - } - -set_child_ptrmaps_out: - pPage->isInit = isInitOrig; - return rc; -} - -/* -** Somewhere on pPage is a pointer to page iFrom. Modify this pointer so -** that it points to iTo. Parameter eType describes the type of pointer to -** be modified, as follows: -** -** PTRMAP_BTREE: pPage is a btree-page. The pointer points at a child -** page of pPage. -** -** PTRMAP_OVERFLOW1: pPage is a btree-page. The pointer points at an overflow -** page pointed to by one of the cells on pPage. -** -** PTRMAP_OVERFLOW2: pPage is an overflow-page. The pointer points at the next -** overflow page in the list. -*/ -static int modifyPagePointer(MemPage *pPage, Pgno iFrom, Pgno iTo, u8 eType){ - assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - assert( sqlite3PagerIswriteable(pPage->pDbPage) ); - if( eType==PTRMAP_OVERFLOW2 ){ - /* The pointer is always the first 4 bytes of the page in this case. */ - if( get4byte(pPage->aData)!=iFrom ){ - return SQLITE_CORRUPT_BKPT; - } - put4byte(pPage->aData, iTo); - }else{ - u8 isInitOrig = pPage->isInit; - int i; - int nCell; - - btreeInitPage(pPage); - nCell = pPage->nCell; - - for(i=0; iaData+pPage->maskPage - && iFrom==get4byte(&pCell[info.iOverflow]) - ){ - put4byte(&pCell[info.iOverflow], iTo); - break; - } - }else{ - if( get4byte(pCell)==iFrom ){ - put4byte(pCell, iTo); - break; - } - } - } - - if( i==nCell ){ - if( eType!=PTRMAP_BTREE || - get4byte(&pPage->aData[pPage->hdrOffset+8])!=iFrom ){ - return SQLITE_CORRUPT_BKPT; - } - put4byte(&pPage->aData[pPage->hdrOffset+8], iTo); - } - - pPage->isInit = isInitOrig; - } - return SQLITE_OK; -} - - -/* -** Move the open database page pDbPage to location iFreePage in the -** database. The pDbPage reference remains valid. -** -** The isCommit flag indicates that there is no need to remember that -** the journal needs to be sync()ed before database page pDbPage->pgno -** can be written to. The caller has already promised not to write to that -** page. -*/ -static int relocatePage( - BtShared *pBt, /* Btree */ - MemPage *pDbPage, /* Open page to move */ - u8 eType, /* Pointer map 'type' entry for pDbPage */ - Pgno iPtrPage, /* Pointer map 'page-no' entry for pDbPage */ - Pgno iFreePage, /* The location to move pDbPage to */ - int isCommit /* isCommit flag passed to sqlite3PagerMovepage */ -){ - MemPage *pPtrPage; /* The page that contains a pointer to pDbPage */ - Pgno iDbPage = pDbPage->pgno; - Pager *pPager = pBt->pPager; - int rc; - - assert( eType==PTRMAP_OVERFLOW2 || eType==PTRMAP_OVERFLOW1 || - eType==PTRMAP_BTREE || eType==PTRMAP_ROOTPAGE ); - assert( sqlite3_mutex_held(pBt->mutex) ); - assert( pDbPage->pBt==pBt ); - - /* Move page iDbPage from its current location to page number iFreePage */ - TRACE(("AUTOVACUUM: Moving %d to free page %d (ptr page %d type %d)\n", - iDbPage, iFreePage, iPtrPage, eType)); - rc = sqlite3PagerMovepage(pPager, pDbPage->pDbPage, iFreePage, isCommit); - if( rc!=SQLITE_OK ){ - return rc; - } - pDbPage->pgno = iFreePage; - - /* If pDbPage was a btree-page, then it may have child pages and/or cells - ** that point to overflow pages. The pointer map entries for all these - ** pages need to be changed. - ** - ** If pDbPage is an overflow page, then the first 4 bytes may store a - ** pointer to a subsequent overflow page. If this is the case, then - ** the pointer map needs to be updated for the subsequent overflow page. - */ - if( eType==PTRMAP_BTREE || eType==PTRMAP_ROOTPAGE ){ - rc = setChildPtrmaps(pDbPage); - if( rc!=SQLITE_OK ){ - return rc; - } - }else{ - Pgno nextOvfl = get4byte(pDbPage->aData); - if( nextOvfl!=0 ){ - ptrmapPut(pBt, nextOvfl, PTRMAP_OVERFLOW2, iFreePage, &rc); - if( rc!=SQLITE_OK ){ - return rc; - } - } - } - - /* Fix the database pointer on page iPtrPage that pointed at iDbPage so - ** that it points at iFreePage. Also fix the pointer map entry for - ** iPtrPage. - */ - if( eType!=PTRMAP_ROOTPAGE ){ - rc = btreeGetPage(pBt, iPtrPage, &pPtrPage, 0); - if( rc!=SQLITE_OK ){ - return rc; - } - rc = sqlite3PagerWrite(pPtrPage->pDbPage); - if( rc!=SQLITE_OK ){ - releasePage(pPtrPage); - return rc; - } - rc = modifyPagePointer(pPtrPage, iDbPage, iFreePage, eType); - releasePage(pPtrPage); - if( rc==SQLITE_OK ){ - ptrmapPut(pBt, iFreePage, eType, iPtrPage, &rc); - } - } - return rc; -} - -/* Forward declaration required by incrVacuumStep(). */ -static int allocateBtreePage(BtShared *, MemPage **, Pgno *, Pgno, u8); - -/* -** Perform a single step of an incremental-vacuum. If successful, -** return SQLITE_OK. If there is no work to do (and therefore no -** point in calling this function again), return SQLITE_DONE. -** -** More specificly, this function attempts to re-organize the -** database so that the last page of the file currently in use -** is no longer in use. -** -** If the nFin parameter is non-zero, this function assumes -** that the caller will keep calling incrVacuumStep() until -** it returns SQLITE_DONE or an error, and that nFin is the -** number of pages the database file will contain after this -** process is complete. If nFin is zero, it is assumed that -** incrVacuumStep() will be called a finite amount of times -** which may or may not empty the freelist. A full autovacuum -** has nFin>0. A "PRAGMA incremental_vacuum" has nFin==0. -*/ -static int incrVacuumStep(BtShared *pBt, Pgno nFin, Pgno iLastPg){ - Pgno nFreeList; /* Number of pages still on the free-list */ - int rc; - - assert( sqlite3_mutex_held(pBt->mutex) ); - assert( iLastPg>nFin ); - - if( !PTRMAP_ISPAGE(pBt, iLastPg) && iLastPg!=PENDING_BYTE_PAGE(pBt) ){ - u8 eType; - Pgno iPtrPage; - - nFreeList = get4byte(&pBt->pPage1->aData[36]); - if( nFreeList==0 ){ - return SQLITE_DONE; - } - - rc = ptrmapGet(pBt, iLastPg, &eType, &iPtrPage); - if( rc!=SQLITE_OK ){ - return rc; - } - if( eType==PTRMAP_ROOTPAGE ){ - return SQLITE_CORRUPT_BKPT; - } - - if( eType==PTRMAP_FREEPAGE ){ - if( nFin==0 ){ - /* Remove the page from the files free-list. This is not required - ** if nFin is non-zero. In that case, the free-list will be - ** truncated to zero after this function returns, so it doesn't - ** matter if it still contains some garbage entries. - */ - Pgno iFreePg; - MemPage *pFreePg; - rc = allocateBtreePage(pBt, &pFreePg, &iFreePg, iLastPg, 1); - if( rc!=SQLITE_OK ){ - return rc; - } - assert( iFreePg==iLastPg ); - releasePage(pFreePg); - } - } else { - Pgno iFreePg; /* Index of free page to move pLastPg to */ - MemPage *pLastPg; - - rc = btreeGetPage(pBt, iLastPg, &pLastPg, 0); - if( rc!=SQLITE_OK ){ - return rc; - } - - /* If nFin is zero, this loop runs exactly once and page pLastPg - ** is swapped with the first free page pulled off the free list. - ** - ** On the other hand, if nFin is greater than zero, then keep - ** looping until a free-page located within the first nFin pages - ** of the file is found. - */ - do { - MemPage *pFreePg; - rc = allocateBtreePage(pBt, &pFreePg, &iFreePg, 0, 0); - if( rc!=SQLITE_OK ){ - releasePage(pLastPg); - return rc; - } - releasePage(pFreePg); - }while( nFin!=0 && iFreePg>nFin ); - assert( iFreePgpDbPage); - if( rc==SQLITE_OK ){ - rc = relocatePage(pBt, pLastPg, eType, iPtrPage, iFreePg, nFin!=0); - } - releasePage(pLastPg); - if( rc!=SQLITE_OK ){ - return rc; - } - } - } - - if( nFin==0 ){ - iLastPg--; - while( iLastPg==PENDING_BYTE_PAGE(pBt)||PTRMAP_ISPAGE(pBt, iLastPg) ){ - if( PTRMAP_ISPAGE(pBt, iLastPg) ){ - MemPage *pPg; - rc = btreeGetPage(pBt, iLastPg, &pPg, 0); - if( rc!=SQLITE_OK ){ - return rc; - } - rc = sqlite3PagerWrite(pPg->pDbPage); - releasePage(pPg); - if( rc!=SQLITE_OK ){ - return rc; - } - } - iLastPg--; - } - sqlite3PagerTruncateImage(pBt->pPager, iLastPg); - pBt->nPage = iLastPg; - } - return SQLITE_OK; -} - -/* -** A write-transaction must be opened before calling this function. -** It performs a single unit of work towards an incremental vacuum. -** -** If the incremental vacuum is finished after this function has run, -** SQLITE_DONE is returned. If it is not finished, but no error occurred, -** SQLITE_OK is returned. Otherwise an SQLite error code. -*/ -int sqlite3BtreeIncrVacuum(Btree *p){ - int rc; - BtShared *pBt = p->pBt; - - sqlite3BtreeEnter(p); - assert( pBt->inTransaction==TRANS_WRITE && p->inTrans==TRANS_WRITE ); - if( !pBt->autoVacuum ){ - rc = SQLITE_DONE; - }else{ - invalidateAllOverflowCache(pBt); - rc = incrVacuumStep(pBt, 0, btreePagecount(pBt)); - if( rc==SQLITE_OK ){ - rc = sqlite3PagerWrite(pBt->pPage1->pDbPage); - put4byte(&pBt->pPage1->aData[28], pBt->nPage); - } - } - sqlite3BtreeLeave(p); - return rc; -} - -/* -** This routine is called prior to sqlite3PagerCommit when a transaction -** is commited for an auto-vacuum database. -** -** If SQLITE_OK is returned, then *pnTrunc is set to the number of pages -** the database file should be truncated to during the commit process. -** i.e. the database has been reorganized so that only the first *pnTrunc -** pages are in use. -*/ -static int autoVacuumCommit(BtShared *pBt){ - int rc = SQLITE_OK; - Pager *pPager = pBt->pPager; - VVA_ONLY( int nRef = sqlite3PagerRefcount(pPager) ); - - assert( sqlite3_mutex_held(pBt->mutex) ); - invalidateAllOverflowCache(pBt); - assert(pBt->autoVacuum); - if( !pBt->incrVacuum ){ - Pgno nFin; /* Number of pages in database after autovacuuming */ - Pgno nFree; /* Number of pages on the freelist initially */ - Pgno nPtrmap; /* Number of PtrMap pages to be freed */ - Pgno iFree; /* The next page to be freed */ - int nEntry; /* Number of entries on one ptrmap page */ - Pgno nOrig; /* Database size before freeing */ - - nOrig = btreePagecount(pBt); - if( PTRMAP_ISPAGE(pBt, nOrig) || nOrig==PENDING_BYTE_PAGE(pBt) ){ - /* It is not possible to create a database for which the final page - ** is either a pointer-map page or the pending-byte page. If one - ** is encountered, this indicates corruption. - */ - return SQLITE_CORRUPT_BKPT; - } - - nFree = get4byte(&pBt->pPage1->aData[36]); - nEntry = pBt->usableSize/5; - nPtrmap = (nFree-nOrig+PTRMAP_PAGENO(pBt, nOrig)+nEntry)/nEntry; - nFin = nOrig - nFree - nPtrmap; - if( nOrig>PENDING_BYTE_PAGE(pBt) && nFinnOrig ) return SQLITE_CORRUPT_BKPT; - - for(iFree=nOrig; iFree>nFin && rc==SQLITE_OK; iFree--){ - rc = incrVacuumStep(pBt, nFin, iFree); - } - if( (rc==SQLITE_DONE || rc==SQLITE_OK) && nFree>0 ){ - rc = sqlite3PagerWrite(pBt->pPage1->pDbPage); - put4byte(&pBt->pPage1->aData[32], 0); - put4byte(&pBt->pPage1->aData[36], 0); - put4byte(&pBt->pPage1->aData[28], nFin); - sqlite3PagerTruncateImage(pBt->pPager, nFin); - pBt->nPage = nFin; - } - if( rc!=SQLITE_OK ){ - sqlite3PagerRollback(pPager); - } - } - - assert( nRef==sqlite3PagerRefcount(pPager) ); - return rc; -} - -#else /* ifndef SQLITE_OMIT_AUTOVACUUM */ -# define setChildPtrmaps(x) SQLITE_OK -#endif - -/* -** This routine does the first phase of a two-phase commit. This routine -** causes a rollback journal to be created (if it does not already exist) -** and populated with enough information so that if a power loss occurs -** the database can be restored to its original state by playing back -** the journal. Then the contents of the journal are flushed out to -** the disk. After the journal is safely on oxide, the changes to the -** database are written into the database file and flushed to oxide. -** At the end of this call, the rollback journal still exists on the -** disk and we are still holding all locks, so the transaction has not -** committed. See sqlite3BtreeCommitPhaseTwo() for the second phase of the -** commit process. -** -** This call is a no-op if no write-transaction is currently active on pBt. -** -** Otherwise, sync the database file for the btree pBt. zMaster points to -** the name of a master journal file that should be written into the -** individual journal file, or is NULL, indicating no master journal file -** (single database transaction). -** -** When this is called, the master journal should already have been -** created, populated with this journal pointer and synced to disk. -** -** Once this is routine has returned, the only thing required to commit -** the write-transaction for this database file is to delete the journal. -*/ -int sqlite3BtreeCommitPhaseOne(Btree *p, const char *zMaster){ - int rc = SQLITE_OK; - if( p->inTrans==TRANS_WRITE ){ - BtShared *pBt = p->pBt; - sqlite3BtreeEnter(p); -#ifndef SQLITE_OMIT_AUTOVACUUM - if( pBt->autoVacuum ){ - rc = autoVacuumCommit(pBt); - if( rc!=SQLITE_OK ){ - sqlite3BtreeLeave(p); - return rc; - } - } -#endif - rc = sqlite3PagerCommitPhaseOne(pBt->pPager, zMaster, 0); - sqlite3BtreeLeave(p); - } - return rc; -} - -/* -** This function is called from both BtreeCommitPhaseTwo() and BtreeRollback() -** at the conclusion of a transaction. -*/ -static void btreeEndTransaction(Btree *p){ - BtShared *pBt = p->pBt; - assert( sqlite3BtreeHoldsMutex(p) ); - - btreeClearHasContent(pBt); - if( p->inTrans>TRANS_NONE && p->db->activeVdbeCnt>1 ){ - /* If there are other active statements that belong to this database - ** handle, downgrade to a read-only transaction. The other statements - ** may still be reading from the database. */ - downgradeAllSharedCacheTableLocks(p); - p->inTrans = TRANS_READ; - }else{ - /* If the handle had any kind of transaction open, decrement the - ** transaction count of the shared btree. If the transaction count - ** reaches 0, set the shared state to TRANS_NONE. The unlockBtreeIfUnused() - ** call below will unlock the pager. */ - if( p->inTrans!=TRANS_NONE ){ - clearAllSharedCacheTableLocks(p); - pBt->nTransaction--; - if( 0==pBt->nTransaction ){ - pBt->inTransaction = TRANS_NONE; - } - } - - /* Set the current transaction state to TRANS_NONE and unlock the - ** pager if this call closed the only read or write transaction. */ - p->inTrans = TRANS_NONE; - unlockBtreeIfUnused(pBt); - } - - btreeIntegrity(p); -} - -/* -** Commit the transaction currently in progress. -** -** This routine implements the second phase of a 2-phase commit. The -** sqlite3BtreeCommitPhaseOne() routine does the first phase and should -** be invoked prior to calling this routine. The sqlite3BtreeCommitPhaseOne() -** routine did all the work of writing information out to disk and flushing the -** contents so that they are written onto the disk platter. All this -** routine has to do is delete or truncate or zero the header in the -** the rollback journal (which causes the transaction to commit) and -** drop locks. -** -** Normally, if an error occurs while the pager layer is attempting to -** finalize the underlying journal file, this function returns an error and -** the upper layer will attempt a rollback. However, if the second argument -** is non-zero then this b-tree transaction is part of a multi-file -** transaction. In this case, the transaction has already been committed -** (by deleting a master journal file) and the caller will ignore this -** functions return code. So, even if an error occurs in the pager layer, -** reset the b-tree objects internal state to indicate that the write -** transaction has been closed. This is quite safe, as the pager will have -** transitioned to the error state. -** -** This will release the write lock on the database file. If there -** are no active cursors, it also releases the read lock. -*/ -int sqlite3BtreeCommitPhaseTwo(Btree *p, int bCleanup){ - - if( p->inTrans==TRANS_NONE ) return SQLITE_OK; - sqlite3BtreeEnter(p); - btreeIntegrity(p); - - /* If the handle has a write-transaction open, commit the shared-btrees - ** transaction and set the shared state to TRANS_READ. - */ - if( p->inTrans==TRANS_WRITE ){ - int rc; - BtShared *pBt = p->pBt; - assert( pBt->inTransaction==TRANS_WRITE ); - assert( pBt->nTransaction>0 ); - rc = sqlite3PagerCommitPhaseTwo(pBt->pPager); - if( rc!=SQLITE_OK && bCleanup==0 ){ - sqlite3BtreeLeave(p); - return rc; - } - pBt->inTransaction = TRANS_READ; - } - - btreeEndTransaction(p); - sqlite3BtreeLeave(p); - return SQLITE_OK; -} - -/* -** Do both phases of a commit. -*/ -int sqlite3BtreeCommit(Btree *p){ - int rc; - sqlite3BtreeEnter(p); - rc = sqlite3BtreeCommitPhaseOne(p, 0); - if( rc==SQLITE_OK ){ - rc = sqlite3BtreeCommitPhaseTwo(p, 0); - } - sqlite3BtreeLeave(p); - return rc; -} - -#ifndef NDEBUG -/* -** Return the number of write-cursors open on this handle. This is for use -** in assert() expressions, so it is only compiled if NDEBUG is not -** defined. -** -** For the purposes of this routine, a write-cursor is any cursor that -** is capable of writing to the databse. That means the cursor was -** originally opened for writing and the cursor has not be disabled -** by having its state changed to CURSOR_FAULT. -*/ -static int countWriteCursors(BtShared *pBt){ - BtCursor *pCur; - int r = 0; - for(pCur=pBt->pCursor; pCur; pCur=pCur->pNext){ - if( pCur->wrFlag && pCur->eState!=CURSOR_FAULT ) r++; - } - return r; -} -#endif - -/* -** This routine sets the state to CURSOR_FAULT and the error -** code to errCode for every cursor on BtShared that pBtree -** references. -** -** Every cursor is tripped, including cursors that belong -** to other database connections that happen to be sharing -** the cache with pBtree. -** -** This routine gets called when a rollback occurs. -** All cursors using the same cache must be tripped -** to prevent them from trying to use the btree after -** the rollback. The rollback may have deleted tables -** or moved root pages, so it is not sufficient to -** save the state of the cursor. The cursor must be -** invalidated. -*/ -void sqlite3BtreeTripAllCursors(Btree *pBtree, int errCode){ - BtCursor *p; - sqlite3BtreeEnter(pBtree); - for(p=pBtree->pBt->pCursor; p; p=p->pNext){ - int i; - sqlite3BtreeClearCursor(p); - p->eState = CURSOR_FAULT; - p->skipNext = errCode; - for(i=0; i<=p->iPage; i++){ - releasePage(p->apPage[i]); - p->apPage[i] = 0; - } - } - sqlite3BtreeLeave(pBtree); -} - -/* -** Rollback the transaction in progress. All cursors will be -** invalided by this operation. Any attempt to use a cursor -** that was open at the beginning of this operation will result -** in an error. -** -** This will release the write lock on the database file. If there -** are no active cursors, it also releases the read lock. -*/ -int sqlite3BtreeRollback(Btree *p){ - int rc; - BtShared *pBt = p->pBt; - MemPage *pPage1; - - sqlite3BtreeEnter(p); - rc = saveAllCursors(pBt, 0, 0); -#ifndef SQLITE_OMIT_SHARED_CACHE - if( rc!=SQLITE_OK ){ - /* This is a horrible situation. An IO or malloc() error occurred whilst - ** trying to save cursor positions. If this is an automatic rollback (as - ** the result of a constraint, malloc() failure or IO error) then - ** the cache may be internally inconsistent (not contain valid trees) so - ** we cannot simply return the error to the caller. Instead, abort - ** all queries that may be using any of the cursors that failed to save. - */ - sqlite3BtreeTripAllCursors(p, rc); - } -#endif - btreeIntegrity(p); - - if( p->inTrans==TRANS_WRITE ){ - int rc2; - - assert( TRANS_WRITE==pBt->inTransaction ); - rc2 = sqlite3PagerRollback(pBt->pPager); - if( rc2!=SQLITE_OK ){ - rc = rc2; - } - - /* The rollback may have destroyed the pPage1->aData value. So - ** call btreeGetPage() on page 1 again to make - ** sure pPage1->aData is set correctly. */ - if( btreeGetPage(pBt, 1, &pPage1, 0)==SQLITE_OK ){ - int nPage = get4byte(28+(u8*)pPage1->aData); - testcase( nPage==0 ); - if( nPage==0 ) sqlite3PagerPagecount(pBt->pPager, &nPage); - testcase( pBt->nPage!=nPage ); - pBt->nPage = nPage; - releasePage(pPage1); - } - assert( countWriteCursors(pBt)==0 ); - pBt->inTransaction = TRANS_READ; - } - - btreeEndTransaction(p); - sqlite3BtreeLeave(p); - return rc; -} - -/* -** Start a statement subtransaction. The subtransaction can can be rolled -** back independently of the main transaction. You must start a transaction -** before starting a subtransaction. The subtransaction is ended automatically -** if the main transaction commits or rolls back. -** -** Statement subtransactions are used around individual SQL statements -** that are contained within a BEGIN...COMMIT block. If a constraint -** error occurs within the statement, the effect of that one statement -** can be rolled back without having to rollback the entire transaction. -** -** A statement sub-transaction is implemented as an anonymous savepoint. The -** value passed as the second parameter is the total number of savepoints, -** including the new anonymous savepoint, open on the B-Tree. i.e. if there -** are no active savepoints and no other statement-transactions open, -** iStatement is 1. This anonymous savepoint can be released or rolled back -** using the sqlite3BtreeSavepoint() function. -*/ -int sqlite3BtreeBeginStmt(Btree *p, int iStatement){ - int rc; - BtShared *pBt = p->pBt; - sqlite3BtreeEnter(p); - assert( p->inTrans==TRANS_WRITE ); - assert( pBt->readOnly==0 ); - assert( iStatement>0 ); - assert( iStatement>p->db->nSavepoint ); - assert( pBt->inTransaction==TRANS_WRITE ); - /* At the pager level, a statement transaction is a savepoint with - ** an index greater than all savepoints created explicitly using - ** SQL statements. It is illegal to open, release or rollback any - ** such savepoints while the statement transaction savepoint is active. - */ - rc = sqlite3PagerOpenSavepoint(pBt->pPager, iStatement); - sqlite3BtreeLeave(p); - return rc; -} - -/* -** The second argument to this function, op, is always SAVEPOINT_ROLLBACK -** or SAVEPOINT_RELEASE. This function either releases or rolls back the -** savepoint identified by parameter iSavepoint, depending on the value -** of op. -** -** Normally, iSavepoint is greater than or equal to zero. However, if op is -** SAVEPOINT_ROLLBACK, then iSavepoint may also be -1. In this case the -** contents of the entire transaction are rolled back. This is different -** from a normal transaction rollback, as no locks are released and the -** transaction remains open. -*/ -int sqlite3BtreeSavepoint(Btree *p, int op, int iSavepoint){ - int rc = SQLITE_OK; - if( p && p->inTrans==TRANS_WRITE ){ - BtShared *pBt = p->pBt; - assert( op==SAVEPOINT_RELEASE || op==SAVEPOINT_ROLLBACK ); - assert( iSavepoint>=0 || (iSavepoint==-1 && op==SAVEPOINT_ROLLBACK) ); - sqlite3BtreeEnter(p); - rc = sqlite3PagerSavepoint(pBt->pPager, op, iSavepoint); - if( rc==SQLITE_OK ){ - if( iSavepoint<0 && pBt->initiallyEmpty ) pBt->nPage = 0; - rc = newDatabase(pBt); - pBt->nPage = get4byte(28 + pBt->pPage1->aData); - - /* The database size was written into the offset 28 of the header - ** when the transaction started, so we know that the value at offset - ** 28 is nonzero. */ - assert( pBt->nPage>0 ); - } - sqlite3BtreeLeave(p); - } - return rc; -} - -/* -** Create a new cursor for the BTree whose root is on the page -** iTable. If a read-only cursor is requested, it is assumed that -** the caller already has at least a read-only transaction open -** on the database already. If a write-cursor is requested, then -** the caller is assumed to have an open write transaction. -** -** If wrFlag==0, then the cursor can only be used for reading. -** If wrFlag==1, then the cursor can be used for reading or for -** writing if other conditions for writing are also met. These -** are the conditions that must be met in order for writing to -** be allowed: -** -** 1: The cursor must have been opened with wrFlag==1 -** -** 2: Other database connections that share the same pager cache -** but which are not in the READ_UNCOMMITTED state may not have -** cursors open with wrFlag==0 on the same table. Otherwise -** the changes made by this write cursor would be visible to -** the read cursors in the other database connection. -** -** 3: The database must be writable (not on read-only media) -** -** 4: There must be an active transaction. -** -** No checking is done to make sure that page iTable really is the -** root page of a b-tree. If it is not, then the cursor acquired -** will not work correctly. -** -** It is assumed that the sqlite3BtreeCursorZero() has been called -** on pCur to initialize the memory space prior to invoking this routine. -*/ -static int btreeCursor( - Btree *p, /* The btree */ - int iTable, /* Root page of table to open */ - int wrFlag, /* 1 to write. 0 read-only */ - struct KeyInfo *pKeyInfo, /* First arg to comparison function */ - BtCursor *pCur /* Space for new cursor */ -){ - BtShared *pBt = p->pBt; /* Shared b-tree handle */ - - assert( sqlite3BtreeHoldsMutex(p) ); - assert( wrFlag==0 || wrFlag==1 ); - - /* The following assert statements verify that if this is a sharable - ** b-tree database, the connection is holding the required table locks, - ** and that no other connection has any open cursor that conflicts with - ** this lock. */ - assert( hasSharedCacheTableLock(p, iTable, pKeyInfo!=0, wrFlag+1) ); - assert( wrFlag==0 || !hasReadConflicts(p, iTable) ); - - /* Assert that the caller has opened the required transaction. */ - assert( p->inTrans>TRANS_NONE ); - assert( wrFlag==0 || p->inTrans==TRANS_WRITE ); - assert( pBt->pPage1 && pBt->pPage1->aData ); - - if( NEVER(wrFlag && pBt->readOnly) ){ - return SQLITE_READONLY; - } - if( iTable==1 && btreePagecount(pBt)==0 ){ - assert( wrFlag==0 ); - iTable = 0; - } - - /* Now that no other errors can occur, finish filling in the BtCursor - ** variables and link the cursor into the BtShared list. */ - pCur->pgnoRoot = (Pgno)iTable; - pCur->iPage = -1; - pCur->pKeyInfo = pKeyInfo; - pCur->pBtree = p; - pCur->pBt = pBt; - pCur->wrFlag = (u8)wrFlag; - pCur->pNext = pBt->pCursor; - if( pCur->pNext ){ - pCur->pNext->pPrev = pCur; - } - pBt->pCursor = pCur; - pCur->eState = CURSOR_INVALID; - pCur->cachedRowid = 0; - return SQLITE_OK; -} -int sqlite3BtreeCursor( - Btree *p, /* The btree */ - int iTable, /* Root page of table to open */ - int wrFlag, /* 1 to write. 0 read-only */ - struct KeyInfo *pKeyInfo, /* First arg to xCompare() */ - BtCursor *pCur /* Write new cursor here */ -){ - int rc; - sqlite3BtreeEnter(p); - rc = btreeCursor(p, iTable, wrFlag, pKeyInfo, pCur); - sqlite3BtreeLeave(p); - return rc; -} - -/* -** Return the size of a BtCursor object in bytes. -** -** This interfaces is needed so that users of cursors can preallocate -** sufficient storage to hold a cursor. The BtCursor object is opaque -** to users so they cannot do the sizeof() themselves - they must call -** this routine. -*/ -int sqlite3BtreeCursorSize(void){ - return ROUND8(sizeof(BtCursor)); -} - -/* -** Initialize memory that will be converted into a BtCursor object. -** -** The simple approach here would be to memset() the entire object -** to zero. But it turns out that the apPage[] and aiIdx[] arrays -** do not need to be zeroed and they are large, so we can save a lot -** of run-time by skipping the initialization of those elements. -*/ -void sqlite3BtreeCursorZero(BtCursor *p){ - memset(p, 0, offsetof(BtCursor, iPage)); -} - -/* -** Set the cached rowid value of every cursor in the same database file -** as pCur and having the same root page number as pCur. The value is -** set to iRowid. -** -** Only positive rowid values are considered valid for this cache. -** The cache is initialized to zero, indicating an invalid cache. -** A btree will work fine with zero or negative rowids. We just cannot -** cache zero or negative rowids, which means tables that use zero or -** negative rowids might run a little slower. But in practice, zero -** or negative rowids are very uncommon so this should not be a problem. -*/ -void sqlite3BtreeSetCachedRowid(BtCursor *pCur, sqlite3_int64 iRowid){ - BtCursor *p; - for(p=pCur->pBt->pCursor; p; p=p->pNext){ - if( p->pgnoRoot==pCur->pgnoRoot ) p->cachedRowid = iRowid; - } - assert( pCur->cachedRowid==iRowid ); -} - -/* -** Return the cached rowid for the given cursor. A negative or zero -** return value indicates that the rowid cache is invalid and should be -** ignored. If the rowid cache has never before been set, then a -** zero is returned. -*/ -sqlite3_int64 sqlite3BtreeGetCachedRowid(BtCursor *pCur){ - return pCur->cachedRowid; -} - -/* -** Close a cursor. The read lock on the database file is released -** when the last cursor is closed. -*/ -int sqlite3BtreeCloseCursor(BtCursor *pCur){ - Btree *pBtree = pCur->pBtree; - if( pBtree ){ - int i; - BtShared *pBt = pCur->pBt; - sqlite3BtreeEnter(pBtree); - sqlite3BtreeClearCursor(pCur); - if( pCur->pPrev ){ - pCur->pPrev->pNext = pCur->pNext; - }else{ - pBt->pCursor = pCur->pNext; - } - if( pCur->pNext ){ - pCur->pNext->pPrev = pCur->pPrev; - } - for(i=0; i<=pCur->iPage; i++){ - releasePage(pCur->apPage[i]); - } - unlockBtreeIfUnused(pBt); - invalidateOverflowCache(pCur); - /* sqlite3_free(pCur); */ - sqlite3BtreeLeave(pBtree); - } - return SQLITE_OK; -} - -/* -** Make sure the BtCursor* given in the argument has a valid -** BtCursor.info structure. If it is not already valid, call -** btreeParseCell() to fill it in. -** -** BtCursor.info is a cache of the information in the current cell. -** Using this cache reduces the number of calls to btreeParseCell(). -** -** 2007-06-25: There is a bug in some versions of MSVC that cause the -** compiler to crash when getCellInfo() is implemented as a macro. -** But there is a measureable speed advantage to using the macro on gcc -** (when less compiler optimizations like -Os or -O0 are used and the -** compiler is not doing agressive inlining.) So we use a real function -** for MSVC and a macro for everything else. Ticket #2457. -*/ -#ifndef NDEBUG - static void assertCellInfo(BtCursor *pCur){ - CellInfo info; - int iPage = pCur->iPage; - memset(&info, 0, sizeof(info)); - btreeParseCell(pCur->apPage[iPage], pCur->aiIdx[iPage], &info); - assert( memcmp(&info, &pCur->info, sizeof(info))==0 ); - } -#else - #define assertCellInfo(x) -#endif -#ifdef _MSC_VER - /* Use a real function in MSVC to work around bugs in that compiler. */ - static void getCellInfo(BtCursor *pCur){ - if( pCur->info.nSize==0 ){ - int iPage = pCur->iPage; - btreeParseCell(pCur->apPage[iPage],pCur->aiIdx[iPage],&pCur->info); - pCur->validNKey = 1; - }else{ - assertCellInfo(pCur); - } - } -#else /* if not _MSC_VER */ - /* Use a macro in all other compilers so that the function is inlined */ -#define getCellInfo(pCur) \ - if( pCur->info.nSize==0 ){ \ - int iPage = pCur->iPage; \ - btreeParseCell(pCur->apPage[iPage],pCur->aiIdx[iPage],&pCur->info); \ - pCur->validNKey = 1; \ - }else{ \ - assertCellInfo(pCur); \ - } -#endif /* _MSC_VER */ - -#ifndef NDEBUG /* The next routine used only within assert() statements */ -/* -** Return true if the given BtCursor is valid. A valid cursor is one -** that is currently pointing to a row in a (non-empty) table. -** This is a verification routine is used only within assert() statements. -*/ -int sqlite3BtreeCursorIsValid(BtCursor *pCur){ - return pCur && pCur->eState==CURSOR_VALID; -} -#endif /* NDEBUG */ - -/* -** Set *pSize to the size of the buffer needed to hold the value of -** the key for the current entry. If the cursor is not pointing -** to a valid entry, *pSize is set to 0. -** -** For a table with the INTKEY flag set, this routine returns the key -** itself, not the number of bytes in the key. -** -** The caller must position the cursor prior to invoking this routine. -** -** This routine cannot fail. It always returns SQLITE_OK. -*/ -int sqlite3BtreeKeySize(BtCursor *pCur, i64 *pSize){ - assert( cursorHoldsMutex(pCur) ); - assert( pCur->eState==CURSOR_INVALID || pCur->eState==CURSOR_VALID ); - if( pCur->eState!=CURSOR_VALID ){ - *pSize = 0; - }else{ - getCellInfo(pCur); - *pSize = pCur->info.nKey; - } - return SQLITE_OK; -} - -/* -** Set *pSize to the number of bytes of data in the entry the -** cursor currently points to. -** -** The caller must guarantee that the cursor is pointing to a non-NULL -** valid entry. In other words, the calling procedure must guarantee -** that the cursor has Cursor.eState==CURSOR_VALID. -** -** Failure is not possible. This function always returns SQLITE_OK. -** It might just as well be a procedure (returning void) but we continue -** to return an integer result code for historical reasons. -*/ -int sqlite3BtreeDataSize(BtCursor *pCur, u32 *pSize){ - assert( cursorHoldsMutex(pCur) ); - assert( pCur->eState==CURSOR_VALID ); - getCellInfo(pCur); - *pSize = pCur->info.nData; - return SQLITE_OK; -} - -/* -** Given the page number of an overflow page in the database (parameter -** ovfl), this function finds the page number of the next page in the -** linked list of overflow pages. If possible, it uses the auto-vacuum -** pointer-map data instead of reading the content of page ovfl to do so. -** -** If an error occurs an SQLite error code is returned. Otherwise: -** -** The page number of the next overflow page in the linked list is -** written to *pPgnoNext. If page ovfl is the last page in its linked -** list, *pPgnoNext is set to zero. -** -** If ppPage is not NULL, and a reference to the MemPage object corresponding -** to page number pOvfl was obtained, then *ppPage is set to point to that -** reference. It is the responsibility of the caller to call releasePage() -** on *ppPage to free the reference. In no reference was obtained (because -** the pointer-map was used to obtain the value for *pPgnoNext), then -** *ppPage is set to zero. -*/ -static int getOverflowPage( - BtShared *pBt, /* The database file */ - Pgno ovfl, /* Current overflow page number */ - MemPage **ppPage, /* OUT: MemPage handle (may be NULL) */ - Pgno *pPgnoNext /* OUT: Next overflow page number */ -){ - Pgno next = 0; - MemPage *pPage = 0; - int rc = SQLITE_OK; - - assert( sqlite3_mutex_held(pBt->mutex) ); - assert(pPgnoNext); - -#ifndef SQLITE_OMIT_AUTOVACUUM - /* Try to find the next page in the overflow list using the - ** autovacuum pointer-map pages. Guess that the next page in - ** the overflow list is page number (ovfl+1). If that guess turns - ** out to be wrong, fall back to loading the data of page - ** number ovfl to determine the next page number. - */ - if( pBt->autoVacuum ){ - Pgno pgno; - Pgno iGuess = ovfl+1; - u8 eType; - - while( PTRMAP_ISPAGE(pBt, iGuess) || iGuess==PENDING_BYTE_PAGE(pBt) ){ - iGuess++; - } - - if( iGuess<=btreePagecount(pBt) ){ - rc = ptrmapGet(pBt, iGuess, &eType, &pgno); - if( rc==SQLITE_OK && eType==PTRMAP_OVERFLOW2 && pgno==ovfl ){ - next = iGuess; - rc = SQLITE_DONE; - } - } - } -#endif - - assert( next==0 || rc==SQLITE_DONE ); - if( rc==SQLITE_OK ){ - rc = btreeGetPage(pBt, ovfl, &pPage, 0); - assert( rc==SQLITE_OK || pPage==0 ); - if( rc==SQLITE_OK ){ - next = get4byte(pPage->aData); - } - } - - *pPgnoNext = next; - if( ppPage ){ - *ppPage = pPage; - }else{ - releasePage(pPage); - } - return (rc==SQLITE_DONE ? SQLITE_OK : rc); -} - -/* -** Copy data from a buffer to a page, or from a page to a buffer. -** -** pPayload is a pointer to data stored on database page pDbPage. -** If argument eOp is false, then nByte bytes of data are copied -** from pPayload to the buffer pointed at by pBuf. If eOp is true, -** then sqlite3PagerWrite() is called on pDbPage and nByte bytes -** of data are copied from the buffer pBuf to pPayload. -** -** SQLITE_OK is returned on success, otherwise an error code. -*/ -static int copyPayload( - void *pPayload, /* Pointer to page data */ - void *pBuf, /* Pointer to buffer */ - int nByte, /* Number of bytes to copy */ - int eOp, /* 0 -> copy from page, 1 -> copy to page */ - DbPage *pDbPage /* Page containing pPayload */ -){ - if( eOp ){ - /* Copy data from buffer to page (a write operation) */ - int rc = sqlite3PagerWrite(pDbPage); - if( rc!=SQLITE_OK ){ - return rc; - } - memcpy(pPayload, pBuf, nByte); - }else{ - /* Copy data from page to buffer (a read operation) */ - memcpy(pBuf, pPayload, nByte); - } - return SQLITE_OK; -} - -/* -** This function is used to read or overwrite payload information -** for the entry that the pCur cursor is pointing to. If the eOp -** parameter is 0, this is a read operation (data copied into -** buffer pBuf). If it is non-zero, a write (data copied from -** buffer pBuf). -** -** A total of "amt" bytes are read or written beginning at "offset". -** Data is read to or from the buffer pBuf. -** -** The content being read or written might appear on the main page -** or be scattered out on multiple overflow pages. -** -** If the BtCursor.isIncrblobHandle flag is set, and the current -** cursor entry uses one or more overflow pages, this function -** allocates space for and lazily popluates the overflow page-list -** cache array (BtCursor.aOverflow). Subsequent calls use this -** cache to make seeking to the supplied offset more efficient. -** -** Once an overflow page-list cache has been allocated, it may be -** invalidated if some other cursor writes to the same table, or if -** the cursor is moved to a different row. Additionally, in auto-vacuum -** mode, the following events may invalidate an overflow page-list cache. -** -** * An incremental vacuum, -** * A commit in auto_vacuum="full" mode, -** * Creating a table (may require moving an overflow page). -*/ -static int accessPayload( - BtCursor *pCur, /* Cursor pointing to entry to read from */ - u32 offset, /* Begin reading this far into payload */ - u32 amt, /* Read this many bytes */ - unsigned char *pBuf, /* Write the bytes into this buffer */ - int eOp /* zero to read. non-zero to write. */ -){ - unsigned char *aPayload; - int rc = SQLITE_OK; - u32 nKey; - int iIdx = 0; - MemPage *pPage = pCur->apPage[pCur->iPage]; /* Btree page of current entry */ - BtShared *pBt = pCur->pBt; /* Btree this cursor belongs to */ - - assert( pPage ); - assert( pCur->eState==CURSOR_VALID ); - assert( pCur->aiIdx[pCur->iPage]nCell ); - assert( cursorHoldsMutex(pCur) ); - - getCellInfo(pCur); - aPayload = pCur->info.pCell + pCur->info.nHeader; - nKey = (pPage->intKey ? 0 : (int)pCur->info.nKey); - - if( NEVER(offset+amt > nKey+pCur->info.nData) - || &aPayload[pCur->info.nLocal] > &pPage->aData[pBt->usableSize] - ){ - /* Trying to read or write past the end of the data is an error */ - return SQLITE_CORRUPT_BKPT; - } - - /* Check if data must be read/written to/from the btree page itself. */ - if( offsetinfo.nLocal ){ - int a = amt; - if( a+offset>pCur->info.nLocal ){ - a = pCur->info.nLocal - offset; - } - rc = copyPayload(&aPayload[offset], pBuf, a, eOp, pPage->pDbPage); - offset = 0; - pBuf += a; - amt -= a; - }else{ - offset -= pCur->info.nLocal; - } - - if( rc==SQLITE_OK && amt>0 ){ - const u32 ovflSize = pBt->usableSize - 4; /* Bytes content per ovfl page */ - Pgno nextPage; - - nextPage = get4byte(&aPayload[pCur->info.nLocal]); - -#ifndef SQLITE_OMIT_INCRBLOB - /* If the isIncrblobHandle flag is set and the BtCursor.aOverflow[] - ** has not been allocated, allocate it now. The array is sized at - ** one entry for each overflow page in the overflow chain. The - ** page number of the first overflow page is stored in aOverflow[0], - ** etc. A value of 0 in the aOverflow[] array means "not yet known" - ** (the cache is lazily populated). - */ - if( pCur->isIncrblobHandle && !pCur->aOverflow ){ - int nOvfl = (pCur->info.nPayload-pCur->info.nLocal+ovflSize-1)/ovflSize; - pCur->aOverflow = (Pgno *)sqlite3MallocZero(sizeof(Pgno)*nOvfl); - /* nOvfl is always positive. If it were zero, fetchPayload would have - ** been used instead of this routine. */ - if( ALWAYS(nOvfl) && !pCur->aOverflow ){ - rc = SQLITE_NOMEM; - } - } - - /* If the overflow page-list cache has been allocated and the - ** entry for the first required overflow page is valid, skip - ** directly to it. - */ - if( pCur->aOverflow && pCur->aOverflow[offset/ovflSize] ){ - iIdx = (offset/ovflSize); - nextPage = pCur->aOverflow[iIdx]; - offset = (offset%ovflSize); - } -#endif - - for( ; rc==SQLITE_OK && amt>0 && nextPage; iIdx++){ - -#ifndef SQLITE_OMIT_INCRBLOB - /* If required, populate the overflow page-list cache. */ - if( pCur->aOverflow ){ - assert(!pCur->aOverflow[iIdx] || pCur->aOverflow[iIdx]==nextPage); - pCur->aOverflow[iIdx] = nextPage; - } -#endif - - if( offset>=ovflSize ){ - /* The only reason to read this page is to obtain the page - ** number for the next page in the overflow chain. The page - ** data is not required. So first try to lookup the overflow - ** page-list cache, if any, then fall back to the getOverflowPage() - ** function. - */ -#ifndef SQLITE_OMIT_INCRBLOB - if( pCur->aOverflow && pCur->aOverflow[iIdx+1] ){ - nextPage = pCur->aOverflow[iIdx+1]; - } else -#endif - rc = getOverflowPage(pBt, nextPage, 0, &nextPage); - offset -= ovflSize; - }else{ - /* Need to read this page properly. It contains some of the - ** range of data that is being read (eOp==0) or written (eOp!=0). - */ -#ifdef SQLITE_DIRECT_OVERFLOW_READ - sqlite3_file *fd; -#endif - int a = amt; - if( a + offset > ovflSize ){ - a = ovflSize - offset; - } - -#ifdef SQLITE_DIRECT_OVERFLOW_READ - /* If all the following are true: - ** - ** 1) this is a read operation, and - ** 2) data is required from the start of this overflow page, and - ** 3) the database is file-backed, and - ** 4) there is no open write-transaction, and - ** 5) the database is not a WAL database, - ** - ** then data can be read directly from the database file into the - ** output buffer, bypassing the page-cache altogether. This speeds - ** up loading large records that span many overflow pages. - */ - if( eOp==0 /* (1) */ - && offset==0 /* (2) */ - && pBt->inTransaction==TRANS_READ /* (4) */ - && (fd = sqlite3PagerFile(pBt->pPager))->pMethods /* (3) */ - && pBt->pPage1->aData[19]==0x01 /* (5) */ - ){ - u8 aSave[4]; - u8 *aWrite = &pBuf[-4]; - memcpy(aSave, aWrite, 4); - rc = sqlite3OsRead(fd, aWrite, a+4, pBt->pageSize * (nextPage-1)); - nextPage = get4byte(aWrite); - memcpy(aWrite, aSave, 4); - }else -#endif - - { - DbPage *pDbPage; - rc = sqlite3PagerGet(pBt->pPager, nextPage, &pDbPage); - if( rc==SQLITE_OK ){ - aPayload = sqlite3PagerGetData(pDbPage); - nextPage = get4byte(aPayload); - rc = copyPayload(&aPayload[offset+4], pBuf, a, eOp, pDbPage); - sqlite3PagerUnref(pDbPage); - offset = 0; - } - } - amt -= a; - pBuf += a; - } - } - } - - if( rc==SQLITE_OK && amt>0 ){ - return SQLITE_CORRUPT_BKPT; - } - return rc; -} - -/* -** Read part of the key associated with cursor pCur. Exactly -** "amt" bytes will be transfered into pBuf[]. The transfer -** begins at "offset". -** -** The caller must ensure that pCur is pointing to a valid row -** in the table. -** -** Return SQLITE_OK on success or an error code if anything goes -** wrong. An error is returned if "offset+amt" is larger than -** the available payload. -*/ -int sqlite3BtreeKey(BtCursor *pCur, u32 offset, u32 amt, void *pBuf){ - assert( cursorHoldsMutex(pCur) ); - assert( pCur->eState==CURSOR_VALID ); - assert( pCur->iPage>=0 && pCur->apPage[pCur->iPage] ); - assert( pCur->aiIdx[pCur->iPage]apPage[pCur->iPage]->nCell ); - return accessPayload(pCur, offset, amt, (unsigned char*)pBuf, 0); -} - -/* -** Read part of the data associated with cursor pCur. Exactly -** "amt" bytes will be transfered into pBuf[]. The transfer -** begins at "offset". -** -** Return SQLITE_OK on success or an error code if anything goes -** wrong. An error is returned if "offset+amt" is larger than -** the available payload. -*/ -int sqlite3BtreeData(BtCursor *pCur, u32 offset, u32 amt, void *pBuf){ - int rc; - -#ifndef SQLITE_OMIT_INCRBLOB - if ( pCur->eState==CURSOR_INVALID ){ - return SQLITE_ABORT; - } -#endif - - assert( cursorHoldsMutex(pCur) ); - rc = restoreCursorPosition(pCur); - if( rc==SQLITE_OK ){ - assert( pCur->eState==CURSOR_VALID ); - assert( pCur->iPage>=0 && pCur->apPage[pCur->iPage] ); - assert( pCur->aiIdx[pCur->iPage]apPage[pCur->iPage]->nCell ); - rc = accessPayload(pCur, offset, amt, pBuf, 0); - } - return rc; -} - -/* -** Return a pointer to payload information from the entry that the -** pCur cursor is pointing to. The pointer is to the beginning of -** the key if skipKey==0 and it points to the beginning of data if -** skipKey==1. The number of bytes of available key/data is written -** into *pAmt. If *pAmt==0, then the value returned will not be -** a valid pointer. -** -** This routine is an optimization. It is common for the entire key -** and data to fit on the local page and for there to be no overflow -** pages. When that is so, this routine can be used to access the -** key and data without making a copy. If the key and/or data spills -** onto overflow pages, then accessPayload() must be used to reassemble -** the key/data and copy it into a preallocated buffer. -** -** The pointer returned by this routine looks directly into the cached -** page of the database. The data might change or move the next time -** any btree routine is called. -*/ -static const unsigned char *fetchPayload( - BtCursor *pCur, /* Cursor pointing to entry to read from */ - int *pAmt, /* Write the number of available bytes here */ - int skipKey /* read beginning at data if this is true */ -){ - unsigned char *aPayload; - MemPage *pPage; - u32 nKey; - u32 nLocal; - - assert( pCur!=0 && pCur->iPage>=0 && pCur->apPage[pCur->iPage]); - assert( pCur->eState==CURSOR_VALID ); - assert( cursorHoldsMutex(pCur) ); - pPage = pCur->apPage[pCur->iPage]; - assert( pCur->aiIdx[pCur->iPage]nCell ); - if( NEVER(pCur->info.nSize==0) ){ - btreeParseCell(pCur->apPage[pCur->iPage], pCur->aiIdx[pCur->iPage], - &pCur->info); - } - aPayload = pCur->info.pCell; - aPayload += pCur->info.nHeader; - if( pPage->intKey ){ - nKey = 0; - }else{ - nKey = (int)pCur->info.nKey; - } - if( skipKey ){ - aPayload += nKey; - nLocal = pCur->info.nLocal - nKey; - }else{ - nLocal = pCur->info.nLocal; - assert( nLocal<=nKey ); - } - *pAmt = nLocal; - return aPayload; -} - - -/* -** For the entry that cursor pCur is point to, return as -** many bytes of the key or data as are available on the local -** b-tree page. Write the number of available bytes into *pAmt. -** -** The pointer returned is ephemeral. The key/data may move -** or be destroyed on the next call to any Btree routine, -** including calls from other threads against the same cache. -** Hence, a mutex on the BtShared should be held prior to calling -** this routine. -** -** These routines is used to get quick access to key and data -** in the common case where no overflow pages are used. -*/ -const void *sqlite3BtreeKeyFetch(BtCursor *pCur, int *pAmt){ - const void *p = 0; - assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) ); - assert( cursorHoldsMutex(pCur) ); - if( ALWAYS(pCur->eState==CURSOR_VALID) ){ - p = (const void*)fetchPayload(pCur, pAmt, 0); - } - return p; -} -const void *sqlite3BtreeDataFetch(BtCursor *pCur, int *pAmt){ - const void *p = 0; - assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) ); - assert( cursorHoldsMutex(pCur) ); - if( ALWAYS(pCur->eState==CURSOR_VALID) ){ - p = (const void*)fetchPayload(pCur, pAmt, 1); - } - return p; -} - - -/* -** Move the cursor down to a new child page. The newPgno argument is the -** page number of the child page to move to. -** -** This function returns SQLITE_CORRUPT if the page-header flags field of -** the new child page does not match the flags field of the parent (i.e. -** if an intkey page appears to be the parent of a non-intkey page, or -** vice-versa). -*/ -static int moveToChild(BtCursor *pCur, u32 newPgno){ - int rc; - int i = pCur->iPage; - MemPage *pNewPage; - BtShared *pBt = pCur->pBt; - - assert( cursorHoldsMutex(pCur) ); - assert( pCur->eState==CURSOR_VALID ); - assert( pCur->iPageiPage>=(BTCURSOR_MAX_DEPTH-1) ){ - return SQLITE_CORRUPT_BKPT; - } - rc = getAndInitPage(pBt, newPgno, &pNewPage); - if( rc ) return rc; - pCur->apPage[i+1] = pNewPage; - pCur->aiIdx[i+1] = 0; - pCur->iPage++; - - pCur->info.nSize = 0; - pCur->validNKey = 0; - if( pNewPage->nCell<1 || pNewPage->intKey!=pCur->apPage[i]->intKey ){ - return SQLITE_CORRUPT_BKPT; - } - return SQLITE_OK; -} - -#ifndef NDEBUG -/* -** Page pParent is an internal (non-leaf) tree page. This function -** asserts that page number iChild is the left-child if the iIdx'th -** cell in page pParent. Or, if iIdx is equal to the total number of -** cells in pParent, that page number iChild is the right-child of -** the page. -*/ -static void assertParentIndex(MemPage *pParent, int iIdx, Pgno iChild){ - assert( iIdx<=pParent->nCell ); - if( iIdx==pParent->nCell ){ - assert( get4byte(&pParent->aData[pParent->hdrOffset+8])==iChild ); - }else{ - assert( get4byte(findCell(pParent, iIdx))==iChild ); - } -} -#else -# define assertParentIndex(x,y,z) -#endif - -/* -** Move the cursor up to the parent page. -** -** pCur->idx is set to the cell index that contains the pointer -** to the page we are coming from. If we are coming from the -** right-most child page then pCur->idx is set to one more than -** the largest cell index. -*/ -static void moveToParent(BtCursor *pCur){ - assert( cursorHoldsMutex(pCur) ); - assert( pCur->eState==CURSOR_VALID ); - assert( pCur->iPage>0 ); - assert( pCur->apPage[pCur->iPage] ); - assertParentIndex( - pCur->apPage[pCur->iPage-1], - pCur->aiIdx[pCur->iPage-1], - pCur->apPage[pCur->iPage]->pgno - ); - releasePage(pCur->apPage[pCur->iPage]); - pCur->iPage--; - pCur->info.nSize = 0; - pCur->validNKey = 0; -} - -/* -** Move the cursor to point to the root page of its b-tree structure. -** -** If the table has a virtual root page, then the cursor is moved to point -** to the virtual root page instead of the actual root page. A table has a -** virtual root page when the actual root page contains no cells and a -** single child page. This can only happen with the table rooted at page 1. -** -** If the b-tree structure is empty, the cursor state is set to -** CURSOR_INVALID. Otherwise, the cursor is set to point to the first -** cell located on the root (or virtual root) page and the cursor state -** is set to CURSOR_VALID. -** -** If this function returns successfully, it may be assumed that the -** page-header flags indicate that the [virtual] root-page is the expected -** kind of b-tree page (i.e. if when opening the cursor the caller did not -** specify a KeyInfo structure the flags byte is set to 0x05 or 0x0D, -** indicating a table b-tree, or if the caller did specify a KeyInfo -** structure the flags byte is set to 0x02 or 0x0A, indicating an index -** b-tree). -*/ -static int moveToRoot(BtCursor *pCur){ - MemPage *pRoot; - int rc = SQLITE_OK; - Btree *p = pCur->pBtree; - BtShared *pBt = p->pBt; - - assert( cursorHoldsMutex(pCur) ); - assert( CURSOR_INVALID < CURSOR_REQUIRESEEK ); - assert( CURSOR_VALID < CURSOR_REQUIRESEEK ); - assert( CURSOR_FAULT > CURSOR_REQUIRESEEK ); - if( pCur->eState>=CURSOR_REQUIRESEEK ){ - if( pCur->eState==CURSOR_FAULT ){ - assert( pCur->skipNext!=SQLITE_OK ); - return pCur->skipNext; - } - sqlite3BtreeClearCursor(pCur); - } - - if( pCur->iPage>=0 ){ - int i; - for(i=1; i<=pCur->iPage; i++){ - releasePage(pCur->apPage[i]); - } - pCur->iPage = 0; - }else if( pCur->pgnoRoot==0 ){ - pCur->eState = CURSOR_INVALID; - return SQLITE_OK; - }else{ - rc = getAndInitPage(pBt, pCur->pgnoRoot, &pCur->apPage[0]); - if( rc!=SQLITE_OK ){ - pCur->eState = CURSOR_INVALID; - return rc; - } - pCur->iPage = 0; - - /* If pCur->pKeyInfo is not NULL, then the caller that opened this cursor - ** expected to open it on an index b-tree. Otherwise, if pKeyInfo is - ** NULL, the caller expects a table b-tree. If this is not the case, - ** return an SQLITE_CORRUPT error. */ - assert( pCur->apPage[0]->intKey==1 || pCur->apPage[0]->intKey==0 ); - if( (pCur->pKeyInfo==0)!=pCur->apPage[0]->intKey ){ - return SQLITE_CORRUPT_BKPT; - } - } - - /* Assert that the root page is of the correct type. This must be the - ** case as the call to this function that loaded the root-page (either - ** this call or a previous invocation) would have detected corruption - ** if the assumption were not true, and it is not possible for the flags - ** byte to have been modified while this cursor is holding a reference - ** to the page. */ - pRoot = pCur->apPage[0]; - assert( pRoot->pgno==pCur->pgnoRoot ); - assert( pRoot->isInit && (pCur->pKeyInfo==0)==pRoot->intKey ); - - pCur->aiIdx[0] = 0; - pCur->info.nSize = 0; - pCur->atLast = 0; - pCur->validNKey = 0; - - if( pRoot->nCell==0 && !pRoot->leaf ){ - Pgno subpage; - if( pRoot->pgno!=1 ) return SQLITE_CORRUPT_BKPT; - subpage = get4byte(&pRoot->aData[pRoot->hdrOffset+8]); - pCur->eState = CURSOR_VALID; - rc = moveToChild(pCur, subpage); - }else{ - pCur->eState = ((pRoot->nCell>0)?CURSOR_VALID:CURSOR_INVALID); - } - return rc; -} - -/* -** Move the cursor down to the left-most leaf entry beneath the -** entry to which it is currently pointing. -** -** The left-most leaf is the one with the smallest key - the first -** in ascending order. -*/ -static int moveToLeftmost(BtCursor *pCur){ - Pgno pgno; - int rc = SQLITE_OK; - MemPage *pPage; - - assert( cursorHoldsMutex(pCur) ); - assert( pCur->eState==CURSOR_VALID ); - while( rc==SQLITE_OK && !(pPage = pCur->apPage[pCur->iPage])->leaf ){ - assert( pCur->aiIdx[pCur->iPage]nCell ); - pgno = get4byte(findCell(pPage, pCur->aiIdx[pCur->iPage])); - rc = moveToChild(pCur, pgno); - } - return rc; -} - -/* -** Move the cursor down to the right-most leaf entry beneath the -** page to which it is currently pointing. Notice the difference -** between moveToLeftmost() and moveToRightmost(). moveToLeftmost() -** finds the left-most entry beneath the *entry* whereas moveToRightmost() -** finds the right-most entry beneath the *page*. -** -** The right-most entry is the one with the largest key - the last -** key in ascending order. -*/ -static int moveToRightmost(BtCursor *pCur){ - Pgno pgno; - int rc = SQLITE_OK; - MemPage *pPage = 0; - - assert( cursorHoldsMutex(pCur) ); - assert( pCur->eState==CURSOR_VALID ); - while( rc==SQLITE_OK && !(pPage = pCur->apPage[pCur->iPage])->leaf ){ - pgno = get4byte(&pPage->aData[pPage->hdrOffset+8]); - pCur->aiIdx[pCur->iPage] = pPage->nCell; - rc = moveToChild(pCur, pgno); - } - if( rc==SQLITE_OK ){ - pCur->aiIdx[pCur->iPage] = pPage->nCell-1; - pCur->info.nSize = 0; - pCur->validNKey = 0; - } - return rc; -} - -/* Move the cursor to the first entry in the table. Return SQLITE_OK -** on success. Set *pRes to 0 if the cursor actually points to something -** or set *pRes to 1 if the table is empty. -*/ -int sqlite3BtreeFirst(BtCursor *pCur, int *pRes){ - int rc; - - assert( cursorHoldsMutex(pCur) ); - assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) ); - rc = moveToRoot(pCur); - if( rc==SQLITE_OK ){ - if( pCur->eState==CURSOR_INVALID ){ - assert( pCur->pgnoRoot==0 || pCur->apPage[pCur->iPage]->nCell==0 ); - *pRes = 1; - }else{ - assert( pCur->apPage[pCur->iPage]->nCell>0 ); - *pRes = 0; - rc = moveToLeftmost(pCur); - } - } - return rc; -} - -/* Move the cursor to the last entry in the table. Return SQLITE_OK -** on success. Set *pRes to 0 if the cursor actually points to something -** or set *pRes to 1 if the table is empty. -*/ -int sqlite3BtreeLast(BtCursor *pCur, int *pRes){ - int rc; - - assert( cursorHoldsMutex(pCur) ); - assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) ); - - /* If the cursor already points to the last entry, this is a no-op. */ - if( CURSOR_VALID==pCur->eState && pCur->atLast ){ -#ifdef SQLITE_DEBUG - /* This block serves to assert() that the cursor really does point - ** to the last entry in the b-tree. */ - int ii; - for(ii=0; iiiPage; ii++){ - assert( pCur->aiIdx[ii]==pCur->apPage[ii]->nCell ); - } - assert( pCur->aiIdx[pCur->iPage]==pCur->apPage[pCur->iPage]->nCell-1 ); - assert( pCur->apPage[pCur->iPage]->leaf ); -#endif - return SQLITE_OK; - } - - rc = moveToRoot(pCur); - if( rc==SQLITE_OK ){ - if( CURSOR_INVALID==pCur->eState ){ - assert( pCur->pgnoRoot==0 || pCur->apPage[pCur->iPage]->nCell==0 ); - *pRes = 1; - }else{ - assert( pCur->eState==CURSOR_VALID ); - *pRes = 0; - rc = moveToRightmost(pCur); - pCur->atLast = rc==SQLITE_OK ?1:0; - } - } - return rc; -} - -/* Move the cursor so that it points to an entry near the key -** specified by pIdxKey or intKey. Return a success code. -** -** For INTKEY tables, the intKey parameter is used. pIdxKey -** must be NULL. For index tables, pIdxKey is used and intKey -** is ignored. -** -** If an exact match is not found, then the cursor is always -** left pointing at a leaf page which would hold the entry if it -** were present. The cursor might point to an entry that comes -** before or after the key. -** -** An integer is written into *pRes which is the result of -** comparing the key with the entry to which the cursor is -** pointing. The meaning of the integer written into -** *pRes is as follows: -** -** *pRes<0 The cursor is left pointing at an entry that -** is smaller than intKey/pIdxKey or if the table is empty -** and the cursor is therefore left point to nothing. -** -** *pRes==0 The cursor is left pointing at an entry that -** exactly matches intKey/pIdxKey. -** -** *pRes>0 The cursor is left pointing at an entry that -** is larger than intKey/pIdxKey. -** -*/ -int sqlite3BtreeMovetoUnpacked( - BtCursor *pCur, /* The cursor to be moved */ - UnpackedRecord *pIdxKey, /* Unpacked index key */ - i64 intKey, /* The table key */ - int biasRight, /* If true, bias the search to the high end */ - int *pRes /* Write search results here */ -){ - int rc; - - assert( cursorHoldsMutex(pCur) ); - assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) ); - assert( pRes ); - assert( (pIdxKey==0)==(pCur->pKeyInfo==0) ); - - /* If the cursor is already positioned at the point we are trying - ** to move to, then just return without doing any work */ - if( pCur->eState==CURSOR_VALID && pCur->validNKey - && pCur->apPage[0]->intKey - ){ - if( pCur->info.nKey==intKey ){ - *pRes = 0; - return SQLITE_OK; - } - if( pCur->atLast && pCur->info.nKeypgnoRoot==0 || pCur->apPage[pCur->iPage] ); - assert( pCur->pgnoRoot==0 || pCur->apPage[pCur->iPage]->isInit ); - assert( pCur->eState==CURSOR_INVALID || pCur->apPage[pCur->iPage]->nCell>0 ); - if( pCur->eState==CURSOR_INVALID ){ - *pRes = -1; - assert( pCur->pgnoRoot==0 || pCur->apPage[pCur->iPage]->nCell==0 ); - return SQLITE_OK; - } - assert( pCur->apPage[0]->intKey || pIdxKey ); - for(;;){ - int lwr, upr, idx; - Pgno chldPg; - MemPage *pPage = pCur->apPage[pCur->iPage]; - int c; - - /* pPage->nCell must be greater than zero. If this is the root-page - ** the cursor would have been INVALID above and this for(;;) loop - ** not run. If this is not the root-page, then the moveToChild() routine - ** would have already detected db corruption. Similarly, pPage must - ** be the right kind (index or table) of b-tree page. Otherwise - ** a moveToChild() or moveToRoot() call would have detected corruption. */ - assert( pPage->nCell>0 ); - assert( pPage->intKey==(pIdxKey==0) ); - lwr = 0; - upr = pPage->nCell-1; - if( biasRight ){ - pCur->aiIdx[pCur->iPage] = (u16)(idx = upr); - }else{ - pCur->aiIdx[pCur->iPage] = (u16)(idx = (upr+lwr)/2); - } - for(;;){ - u8 *pCell; /* Pointer to current cell in pPage */ - - assert( idx==pCur->aiIdx[pCur->iPage] ); - pCur->info.nSize = 0; - pCell = findCell(pPage, idx) + pPage->childPtrSize; - if( pPage->intKey ){ - i64 nCellKey; - if( pPage->hasData ){ - u32 dummy; - pCell += getVarint32(pCell, dummy); - } - getVarint(pCell, (u64*)&nCellKey); - if( nCellKey==intKey ){ - c = 0; - }else if( nCellKeyintKey ); - c = +1; - } - pCur->validNKey = 1; - pCur->info.nKey = nCellKey; - }else{ - /* The maximum supported page-size is 65536 bytes. This means that - ** the maximum number of record bytes stored on an index B-Tree - ** page is less than 16384 bytes and may be stored as a 2-byte - ** varint. This information is used to attempt to avoid parsing - ** the entire cell by checking for the cases where the record is - ** stored entirely within the b-tree page by inspecting the first - ** 2 bytes of the cell. - */ - int nCell = pCell[0]; - if( !(nCell & 0x80) && nCell<=pPage->maxLocal ){ - /* This branch runs if the record-size field of the cell is a - ** single byte varint and the record fits entirely on the main - ** b-tree page. */ - c = sqlite3VdbeRecordCompare(nCell, (void*)&pCell[1], pIdxKey); - }else if( !(pCell[1] & 0x80) - && (nCell = ((nCell&0x7f)<<7) + pCell[1])<=pPage->maxLocal - ){ - /* The record-size field is a 2 byte varint and the record - ** fits entirely on the main b-tree page. */ - c = sqlite3VdbeRecordCompare(nCell, (void*)&pCell[2], pIdxKey); - }else{ - /* The record flows over onto one or more overflow pages. In - ** this case the whole cell needs to be parsed, a buffer allocated - ** and accessPayload() used to retrieve the record into the - ** buffer before VdbeRecordCompare() can be called. */ - void *pCellKey; - u8 * const pCellBody = pCell - pPage->childPtrSize; - btreeParseCellPtr(pPage, pCellBody, &pCur->info); - nCell = (int)pCur->info.nKey; - pCellKey = sqlite3Malloc( nCell ); - if( pCellKey==0 ){ - rc = SQLITE_NOMEM; - goto moveto_finish; - } - rc = accessPayload(pCur, 0, nCell, (unsigned char*)pCellKey, 0); - if( rc ){ - sqlite3_free(pCellKey); - goto moveto_finish; - } - c = sqlite3VdbeRecordCompare(nCell, pCellKey, pIdxKey); - sqlite3_free(pCellKey); - } - } - if( c==0 ){ - if( pPage->intKey && !pPage->leaf ){ - lwr = idx; - break; - }else{ - *pRes = 0; - rc = SQLITE_OK; - goto moveto_finish; - } - } - if( c<0 ){ - lwr = idx+1; - }else{ - upr = idx-1; - } - if( lwr>upr ){ - break; - } - pCur->aiIdx[pCur->iPage] = (u16)(idx = (lwr+upr)/2); - } - assert( lwr==upr+1 || (pPage->intKey && !pPage->leaf) ); - assert( pPage->isInit ); - if( pPage->leaf ){ - chldPg = 0; - }else if( lwr>=pPage->nCell ){ - chldPg = get4byte(&pPage->aData[pPage->hdrOffset+8]); - }else{ - chldPg = get4byte(findCell(pPage, lwr)); - } - if( chldPg==0 ){ - assert( pCur->aiIdx[pCur->iPage]apPage[pCur->iPage]->nCell ); - *pRes = c; - rc = SQLITE_OK; - goto moveto_finish; - } - pCur->aiIdx[pCur->iPage] = (u16)lwr; - pCur->info.nSize = 0; - pCur->validNKey = 0; - rc = moveToChild(pCur, chldPg); - if( rc ) goto moveto_finish; - } -moveto_finish: - return rc; -} - - -/* -** Return TRUE if the cursor is not pointing at an entry of the table. -** -** TRUE will be returned after a call to sqlite3BtreeNext() moves -** past the last entry in the table or sqlite3BtreePrev() moves past -** the first entry. TRUE is also returned if the table is empty. -*/ -int sqlite3BtreeEof(BtCursor *pCur){ - /* TODO: What if the cursor is in CURSOR_REQUIRESEEK but all table entries - ** have been deleted? This API will need to change to return an error code - ** as well as the boolean result value. - */ - return (CURSOR_VALID!=pCur->eState); -} - -/* -** Advance the cursor to the next entry in the database. If -** successful then set *pRes=0. If the cursor -** was already pointing to the last entry in the database before -** this routine was called, then set *pRes=1. -*/ -int sqlite3BtreeNext(BtCursor *pCur, int *pRes){ - int rc; - int idx; - MemPage *pPage; - - assert( cursorHoldsMutex(pCur) ); - rc = restoreCursorPosition(pCur); - if( rc!=SQLITE_OK ){ - return rc; - } - assert( pRes!=0 ); - if( CURSOR_INVALID==pCur->eState ){ - *pRes = 1; - return SQLITE_OK; - } - if( pCur->skipNext>0 ){ - pCur->skipNext = 0; - *pRes = 0; - return SQLITE_OK; - } - pCur->skipNext = 0; - - pPage = pCur->apPage[pCur->iPage]; - idx = ++pCur->aiIdx[pCur->iPage]; - assert( pPage->isInit ); - assert( idx<=pPage->nCell ); - - pCur->info.nSize = 0; - pCur->validNKey = 0; - if( idx>=pPage->nCell ){ - if( !pPage->leaf ){ - rc = moveToChild(pCur, get4byte(&pPage->aData[pPage->hdrOffset+8])); - if( rc ) return rc; - rc = moveToLeftmost(pCur); - *pRes = 0; - return rc; - } - do{ - if( pCur->iPage==0 ){ - *pRes = 1; - pCur->eState = CURSOR_INVALID; - return SQLITE_OK; - } - moveToParent(pCur); - pPage = pCur->apPage[pCur->iPage]; - }while( pCur->aiIdx[pCur->iPage]>=pPage->nCell ); - *pRes = 0; - if( pPage->intKey ){ - rc = sqlite3BtreeNext(pCur, pRes); - }else{ - rc = SQLITE_OK; - } - return rc; - } - *pRes = 0; - if( pPage->leaf ){ - return SQLITE_OK; - } - rc = moveToLeftmost(pCur); - return rc; -} - - -/* -** Step the cursor to the back to the previous entry in the database. If -** successful then set *pRes=0. If the cursor -** was already pointing to the first entry in the database before -** this routine was called, then set *pRes=1. -*/ -int sqlite3BtreePrevious(BtCursor *pCur, int *pRes){ - int rc; - MemPage *pPage; - - assert( cursorHoldsMutex(pCur) ); - rc = restoreCursorPosition(pCur); - if( rc!=SQLITE_OK ){ - return rc; - } - pCur->atLast = 0; - if( CURSOR_INVALID==pCur->eState ){ - *pRes = 1; - return SQLITE_OK; - } - if( pCur->skipNext<0 ){ - pCur->skipNext = 0; - *pRes = 0; - return SQLITE_OK; - } - pCur->skipNext = 0; - - pPage = pCur->apPage[pCur->iPage]; - assert( pPage->isInit ); - if( !pPage->leaf ){ - int idx = pCur->aiIdx[pCur->iPage]; - rc = moveToChild(pCur, get4byte(findCell(pPage, idx))); - if( rc ){ - return rc; - } - rc = moveToRightmost(pCur); - }else{ - while( pCur->aiIdx[pCur->iPage]==0 ){ - if( pCur->iPage==0 ){ - pCur->eState = CURSOR_INVALID; - *pRes = 1; - return SQLITE_OK; - } - moveToParent(pCur); - } - pCur->info.nSize = 0; - pCur->validNKey = 0; - - pCur->aiIdx[pCur->iPage]--; - pPage = pCur->apPage[pCur->iPage]; - if( pPage->intKey && !pPage->leaf ){ - rc = sqlite3BtreePrevious(pCur, pRes); - }else{ - rc = SQLITE_OK; - } - } - *pRes = 0; - return rc; -} - -/* -** Allocate a new page from the database file. -** -** The new page is marked as dirty. (In other words, sqlite3PagerWrite() -** has already been called on the new page.) The new page has also -** been referenced and the calling routine is responsible for calling -** sqlite3PagerUnref() on the new page when it is done. -** -** SQLITE_OK is returned on success. Any other return value indicates -** an error. *ppPage and *pPgno are undefined in the event of an error. -** Do not invoke sqlite3PagerUnref() on *ppPage if an error is returned. -** -** If the "nearby" parameter is not 0, then a (feeble) effort is made to -** locate a page close to the page number "nearby". This can be used in an -** attempt to keep related pages close to each other in the database file, -** which in turn can make database access faster. -** -** If the "exact" parameter is not 0, and the page-number nearby exists -** anywhere on the free-list, then it is guarenteed to be returned. This -** is only used by auto-vacuum databases when allocating a new table. -*/ -static int allocateBtreePage( - BtShared *pBt, - MemPage **ppPage, - Pgno *pPgno, - Pgno nearby, - u8 exact -){ - MemPage *pPage1; - int rc; - u32 n; /* Number of pages on the freelist */ - u32 k; /* Number of leaves on the trunk of the freelist */ - MemPage *pTrunk = 0; - MemPage *pPrevTrunk = 0; - Pgno mxPage; /* Total size of the database file */ - - assert( sqlite3_mutex_held(pBt->mutex) ); - pPage1 = pBt->pPage1; - mxPage = btreePagecount(pBt); - n = get4byte(&pPage1->aData[36]); - testcase( n==mxPage-1 ); - if( n>=mxPage ){ - return SQLITE_CORRUPT_BKPT; - } - if( n>0 ){ - /* There are pages on the freelist. Reuse one of those pages. */ - Pgno iTrunk; - u8 searchList = 0; /* If the free-list must be searched for 'nearby' */ - - /* If the 'exact' parameter was true and a query of the pointer-map - ** shows that the page 'nearby' is somewhere on the free-list, then - ** the entire-list will be searched for that page. - */ -#ifndef SQLITE_OMIT_AUTOVACUUM - if( exact && nearby<=mxPage ){ - u8 eType; - assert( nearby>0 ); - assert( pBt->autoVacuum ); - rc = ptrmapGet(pBt, nearby, &eType, 0); - if( rc ) return rc; - if( eType==PTRMAP_FREEPAGE ){ - searchList = 1; - } - *pPgno = nearby; - } -#endif - - /* Decrement the free-list count by 1. Set iTrunk to the index of the - ** first free-list trunk page. iPrevTrunk is initially 1. - */ - rc = sqlite3PagerWrite(pPage1->pDbPage); - if( rc ) return rc; - put4byte(&pPage1->aData[36], n-1); - - /* The code within this loop is run only once if the 'searchList' variable - ** is not true. Otherwise, it runs once for each trunk-page on the - ** free-list until the page 'nearby' is located. - */ - do { - pPrevTrunk = pTrunk; - if( pPrevTrunk ){ - iTrunk = get4byte(&pPrevTrunk->aData[0]); - }else{ - iTrunk = get4byte(&pPage1->aData[32]); - } - testcase( iTrunk==mxPage ); - if( iTrunk>mxPage ){ - rc = SQLITE_CORRUPT_BKPT; - }else{ - rc = btreeGetPage(pBt, iTrunk, &pTrunk, 0); - } - if( rc ){ - pTrunk = 0; - goto end_allocate_page; - } - assert( pTrunk!=0 ); - assert( pTrunk->aData!=0 ); - - k = get4byte(&pTrunk->aData[4]); /* # of leaves on this trunk page */ - if( k==0 && !searchList ){ - /* The trunk has no leaves and the list is not being searched. - ** So extract the trunk page itself and use it as the newly - ** allocated page */ - assert( pPrevTrunk==0 ); - rc = sqlite3PagerWrite(pTrunk->pDbPage); - if( rc ){ - goto end_allocate_page; - } - *pPgno = iTrunk; - memcpy(&pPage1->aData[32], &pTrunk->aData[0], 4); - *ppPage = pTrunk; - pTrunk = 0; - TRACE(("ALLOCATE: %d trunk - %d free pages left\n", *pPgno, n-1)); - }else if( k>(u32)(pBt->usableSize/4 - 2) ){ - /* Value of k is out of range. Database corruption */ - rc = SQLITE_CORRUPT_BKPT; - goto end_allocate_page; -#ifndef SQLITE_OMIT_AUTOVACUUM - }else if( searchList && nearby==iTrunk ){ - /* The list is being searched and this trunk page is the page - ** to allocate, regardless of whether it has leaves. - */ - assert( *pPgno==iTrunk ); - *ppPage = pTrunk; - searchList = 0; - rc = sqlite3PagerWrite(pTrunk->pDbPage); - if( rc ){ - goto end_allocate_page; - } - if( k==0 ){ - if( !pPrevTrunk ){ - memcpy(&pPage1->aData[32], &pTrunk->aData[0], 4); - }else{ - rc = sqlite3PagerWrite(pPrevTrunk->pDbPage); - if( rc!=SQLITE_OK ){ - goto end_allocate_page; - } - memcpy(&pPrevTrunk->aData[0], &pTrunk->aData[0], 4); - } - }else{ - /* The trunk page is required by the caller but it contains - ** pointers to free-list leaves. The first leaf becomes a trunk - ** page in this case. - */ - MemPage *pNewTrunk; - Pgno iNewTrunk = get4byte(&pTrunk->aData[8]); - if( iNewTrunk>mxPage ){ - rc = SQLITE_CORRUPT_BKPT; - goto end_allocate_page; - } - testcase( iNewTrunk==mxPage ); - rc = btreeGetPage(pBt, iNewTrunk, &pNewTrunk, 0); - if( rc!=SQLITE_OK ){ - goto end_allocate_page; - } - rc = sqlite3PagerWrite(pNewTrunk->pDbPage); - if( rc!=SQLITE_OK ){ - releasePage(pNewTrunk); - goto end_allocate_page; - } - memcpy(&pNewTrunk->aData[0], &pTrunk->aData[0], 4); - put4byte(&pNewTrunk->aData[4], k-1); - memcpy(&pNewTrunk->aData[8], &pTrunk->aData[12], (k-1)*4); - releasePage(pNewTrunk); - if( !pPrevTrunk ){ - assert( sqlite3PagerIswriteable(pPage1->pDbPage) ); - put4byte(&pPage1->aData[32], iNewTrunk); - }else{ - rc = sqlite3PagerWrite(pPrevTrunk->pDbPage); - if( rc ){ - goto end_allocate_page; - } - put4byte(&pPrevTrunk->aData[0], iNewTrunk); - } - } - pTrunk = 0; - TRACE(("ALLOCATE: %d trunk - %d free pages left\n", *pPgno, n-1)); -#endif - }else if( k>0 ){ - /* Extract a leaf from the trunk */ - u32 closest; - Pgno iPage; - unsigned char *aData = pTrunk->aData; - if( nearby>0 ){ - u32 i; - int dist; - closest = 0; - dist = sqlite3AbsInt32(get4byte(&aData[8]) - nearby); - for(i=1; imxPage ){ - rc = SQLITE_CORRUPT_BKPT; - goto end_allocate_page; - } - testcase( iPage==mxPage ); - if( !searchList || iPage==nearby ){ - int noContent; - *pPgno = iPage; - TRACE(("ALLOCATE: %d was leaf %d of %d on trunk %d" - ": %d more free pages\n", - *pPgno, closest+1, k, pTrunk->pgno, n-1)); - rc = sqlite3PagerWrite(pTrunk->pDbPage); - if( rc ) goto end_allocate_page; - if( closestpDbPage); - if( rc!=SQLITE_OK ){ - releasePage(*ppPage); - } - } - searchList = 0; - } - } - releasePage(pPrevTrunk); - pPrevTrunk = 0; - }while( searchList ); - }else{ - /* There are no pages on the freelist, so create a new page at the - ** end of the file */ - rc = sqlite3PagerWrite(pBt->pPage1->pDbPage); - if( rc ) return rc; - pBt->nPage++; - if( pBt->nPage==PENDING_BYTE_PAGE(pBt) ) pBt->nPage++; - -#ifndef SQLITE_OMIT_AUTOVACUUM - if( pBt->autoVacuum && PTRMAP_ISPAGE(pBt, pBt->nPage) ){ - /* If *pPgno refers to a pointer-map page, allocate two new pages - ** at the end of the file instead of one. The first allocated page - ** becomes a new pointer-map page, the second is used by the caller. - */ - MemPage *pPg = 0; - TRACE(("ALLOCATE: %d from end of file (pointer-map page)\n", pBt->nPage)); - assert( pBt->nPage!=PENDING_BYTE_PAGE(pBt) ); - rc = btreeGetPage(pBt, pBt->nPage, &pPg, 1); - if( rc==SQLITE_OK ){ - rc = sqlite3PagerWrite(pPg->pDbPage); - releasePage(pPg); - } - if( rc ) return rc; - pBt->nPage++; - if( pBt->nPage==PENDING_BYTE_PAGE(pBt) ){ pBt->nPage++; } - } -#endif - put4byte(28 + (u8*)pBt->pPage1->aData, pBt->nPage); - *pPgno = pBt->nPage; - - assert( *pPgno!=PENDING_BYTE_PAGE(pBt) ); - rc = btreeGetPage(pBt, *pPgno, ppPage, 1); - if( rc ) return rc; - rc = sqlite3PagerWrite((*ppPage)->pDbPage); - if( rc!=SQLITE_OK ){ - releasePage(*ppPage); - } - TRACE(("ALLOCATE: %d from end of file\n", *pPgno)); - } - - assert( *pPgno!=PENDING_BYTE_PAGE(pBt) ); - -end_allocate_page: - releasePage(pTrunk); - releasePage(pPrevTrunk); - if( rc==SQLITE_OK ){ - if( sqlite3PagerPageRefcount((*ppPage)->pDbPage)>1 ){ - releasePage(*ppPage); - return SQLITE_CORRUPT_BKPT; - } - (*ppPage)->isInit = 0; - }else{ - *ppPage = 0; - } - assert( rc!=SQLITE_OK || sqlite3PagerIswriteable((*ppPage)->pDbPage) ); - return rc; -} - -/* -** This function is used to add page iPage to the database file free-list. -** It is assumed that the page is not already a part of the free-list. -** -** The value passed as the second argument to this function is optional. -** If the caller happens to have a pointer to the MemPage object -** corresponding to page iPage handy, it may pass it as the second value. -** Otherwise, it may pass NULL. -** -** If a pointer to a MemPage object is passed as the second argument, -** its reference count is not altered by this function. -*/ -static int freePage2(BtShared *pBt, MemPage *pMemPage, Pgno iPage){ - MemPage *pTrunk = 0; /* Free-list trunk page */ - Pgno iTrunk = 0; /* Page number of free-list trunk page */ - MemPage *pPage1 = pBt->pPage1; /* Local reference to page 1 */ - MemPage *pPage; /* Page being freed. May be NULL. */ - int rc; /* Return Code */ - int nFree; /* Initial number of pages on free-list */ - - assert( sqlite3_mutex_held(pBt->mutex) ); - assert( iPage>1 ); - assert( !pMemPage || pMemPage->pgno==iPage ); - - if( pMemPage ){ - pPage = pMemPage; - sqlite3PagerRef(pPage->pDbPage); - }else{ - pPage = btreePageLookup(pBt, iPage); - } - - /* Increment the free page count on pPage1 */ - rc = sqlite3PagerWrite(pPage1->pDbPage); - if( rc ) goto freepage_out; - nFree = get4byte(&pPage1->aData[36]); - put4byte(&pPage1->aData[36], nFree+1); - - if( pBt->secureDelete ){ - /* If the secure_delete option is enabled, then - ** always fully overwrite deleted information with zeros. - */ - if( (!pPage && ((rc = btreeGetPage(pBt, iPage, &pPage, 0))!=0) ) - || ((rc = sqlite3PagerWrite(pPage->pDbPage))!=0) - ){ - goto freepage_out; - } - memset(pPage->aData, 0, pPage->pBt->pageSize); - } - - /* If the database supports auto-vacuum, write an entry in the pointer-map - ** to indicate that the page is free. - */ - if( ISAUTOVACUUM ){ - ptrmapPut(pBt, iPage, PTRMAP_FREEPAGE, 0, &rc); - if( rc ) goto freepage_out; - } - - /* Now manipulate the actual database free-list structure. There are two - ** possibilities. If the free-list is currently empty, or if the first - ** trunk page in the free-list is full, then this page will become a - ** new free-list trunk page. Otherwise, it will become a leaf of the - ** first trunk page in the current free-list. This block tests if it - ** is possible to add the page as a new free-list leaf. - */ - if( nFree!=0 ){ - u32 nLeaf; /* Initial number of leaf cells on trunk page */ - - iTrunk = get4byte(&pPage1->aData[32]); - rc = btreeGetPage(pBt, iTrunk, &pTrunk, 0); - if( rc!=SQLITE_OK ){ - goto freepage_out; - } - - nLeaf = get4byte(&pTrunk->aData[4]); - assert( pBt->usableSize>32 ); - if( nLeaf > (u32)pBt->usableSize/4 - 2 ){ - rc = SQLITE_CORRUPT_BKPT; - goto freepage_out; - } - if( nLeaf < (u32)pBt->usableSize/4 - 8 ){ - /* In this case there is room on the trunk page to insert the page - ** being freed as a new leaf. - ** - ** Note that the trunk page is not really full until it contains - ** usableSize/4 - 2 entries, not usableSize/4 - 8 entries as we have - ** coded. But due to a coding error in versions of SQLite prior to - ** 3.6.0, databases with freelist trunk pages holding more than - ** usableSize/4 - 8 entries will be reported as corrupt. In order - ** to maintain backwards compatibility with older versions of SQLite, - ** we will continue to restrict the number of entries to usableSize/4 - 8 - ** for now. At some point in the future (once everyone has upgraded - ** to 3.6.0 or later) we should consider fixing the conditional above - ** to read "usableSize/4-2" instead of "usableSize/4-8". - */ - rc = sqlite3PagerWrite(pTrunk->pDbPage); - if( rc==SQLITE_OK ){ - put4byte(&pTrunk->aData[4], nLeaf+1); - put4byte(&pTrunk->aData[8+nLeaf*4], iPage); - if( pPage && !pBt->secureDelete ){ - sqlite3PagerDontWrite(pPage->pDbPage); - } - rc = btreeSetHasContent(pBt, iPage); - } - TRACE(("FREE-PAGE: %d leaf on trunk page %d\n",pPage->pgno,pTrunk->pgno)); - goto freepage_out; - } - } - - /* If control flows to this point, then it was not possible to add the - ** the page being freed as a leaf page of the first trunk in the free-list. - ** Possibly because the free-list is empty, or possibly because the - ** first trunk in the free-list is full. Either way, the page being freed - ** will become the new first trunk page in the free-list. - */ - if( pPage==0 && SQLITE_OK!=(rc = btreeGetPage(pBt, iPage, &pPage, 0)) ){ - goto freepage_out; - } - rc = sqlite3PagerWrite(pPage->pDbPage); - if( rc!=SQLITE_OK ){ - goto freepage_out; - } - put4byte(pPage->aData, iTrunk); - put4byte(&pPage->aData[4], 0); - put4byte(&pPage1->aData[32], iPage); - TRACE(("FREE-PAGE: %d new trunk page replacing %d\n", pPage->pgno, iTrunk)); - -freepage_out: - if( pPage ){ - pPage->isInit = 0; - } - releasePage(pPage); - releasePage(pTrunk); - return rc; -} -static void freePage(MemPage *pPage, int *pRC){ - if( (*pRC)==SQLITE_OK ){ - *pRC = freePage2(pPage->pBt, pPage, pPage->pgno); - } -} - -/* -** Free any overflow pages associated with the given Cell. -*/ -static int clearCell(MemPage *pPage, unsigned char *pCell){ - BtShared *pBt = pPage->pBt; - CellInfo info; - Pgno ovflPgno; - int rc; - int nOvfl; - u32 ovflPageSize; - - assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - btreeParseCellPtr(pPage, pCell, &info); - if( info.iOverflow==0 ){ - return SQLITE_OK; /* No overflow pages. Return without doing anything */ - } - if( pCell+info.iOverflow+3 > pPage->aData+pPage->maskPage ){ - return SQLITE_CORRUPT; /* Cell extends past end of page */ - } - ovflPgno = get4byte(&pCell[info.iOverflow]); - assert( pBt->usableSize > 4 ); - ovflPageSize = pBt->usableSize - 4; - nOvfl = (info.nPayload - info.nLocal + ovflPageSize - 1)/ovflPageSize; - assert( ovflPgno==0 || nOvfl>0 ); - while( nOvfl-- ){ - Pgno iNext = 0; - MemPage *pOvfl = 0; - if( ovflPgno<2 || ovflPgno>btreePagecount(pBt) ){ - /* 0 is not a legal page number and page 1 cannot be an - ** overflow page. Therefore if ovflPgno<2 or past the end of the - ** file the database must be corrupt. */ - return SQLITE_CORRUPT_BKPT; - } - if( nOvfl ){ - rc = getOverflowPage(pBt, ovflPgno, &pOvfl, &iNext); - if( rc ) return rc; - } - - if( ( pOvfl || ((pOvfl = btreePageLookup(pBt, ovflPgno))!=0) ) - && sqlite3PagerPageRefcount(pOvfl->pDbPage)!=1 - ){ - /* There is no reason any cursor should have an outstanding reference - ** to an overflow page belonging to a cell that is being deleted/updated. - ** So if there exists more than one reference to this page, then it - ** must not really be an overflow page and the database must be corrupt. - ** It is helpful to detect this before calling freePage2(), as - ** freePage2() may zero the page contents if secure-delete mode is - ** enabled. If this 'overflow' page happens to be a page that the - ** caller is iterating through or using in some other way, this - ** can be problematic. - */ - rc = SQLITE_CORRUPT_BKPT; - }else{ - rc = freePage2(pBt, pOvfl, ovflPgno); - } - - if( pOvfl ){ - sqlite3PagerUnref(pOvfl->pDbPage); - } - if( rc ) return rc; - ovflPgno = iNext; - } - return SQLITE_OK; -} - -/* -** Create the byte sequence used to represent a cell on page pPage -** and write that byte sequence into pCell[]. Overflow pages are -** allocated and filled in as necessary. The calling procedure -** is responsible for making sure sufficient space has been allocated -** for pCell[]. -** -** Note that pCell does not necessary need to point to the pPage->aData -** area. pCell might point to some temporary storage. The cell will -** be constructed in this temporary area then copied into pPage->aData -** later. -*/ -static int fillInCell( - MemPage *pPage, /* The page that contains the cell */ - unsigned char *pCell, /* Complete text of the cell */ - const void *pKey, i64 nKey, /* The key */ - const void *pData,int nData, /* The data */ - int nZero, /* Extra zero bytes to append to pData */ - int *pnSize /* Write cell size here */ -){ - int nPayload; - const u8 *pSrc; - int nSrc, n, rc; - int spaceLeft; - MemPage *pOvfl = 0; - MemPage *pToRelease = 0; - unsigned char *pPrior; - unsigned char *pPayload; - BtShared *pBt = pPage->pBt; - Pgno pgnoOvfl = 0; - int nHeader; - CellInfo info; - - assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - - /* pPage is not necessarily writeable since pCell might be auxiliary - ** buffer space that is separate from the pPage buffer area */ - assert( pCellaData || pCell>=&pPage->aData[pBt->pageSize] - || sqlite3PagerIswriteable(pPage->pDbPage) ); - - /* Fill in the header. */ - nHeader = 0; - if( !pPage->leaf ){ - nHeader += 4; - } - if( pPage->hasData ){ - nHeader += putVarint(&pCell[nHeader], nData+nZero); - }else{ - nData = nZero = 0; - } - nHeader += putVarint(&pCell[nHeader], *(u64*)&nKey); - btreeParseCellPtr(pPage, pCell, &info); - assert( info.nHeader==nHeader ); - assert( info.nKey==nKey ); - assert( info.nData==(u32)(nData+nZero) ); - - /* Fill in the payload */ - nPayload = nData + nZero; - if( pPage->intKey ){ - pSrc = pData; - nSrc = nData; - nData = 0; - }else{ - if( NEVER(nKey>0x7fffffff || pKey==0) ){ - return SQLITE_CORRUPT_BKPT; - } - nPayload += (int)nKey; - pSrc = pKey; - nSrc = (int)nKey; - } - *pnSize = info.nSize; - spaceLeft = info.nLocal; - pPayload = &pCell[nHeader]; - pPrior = &pCell[info.iOverflow]; - - while( nPayload>0 ){ - if( spaceLeft==0 ){ -#ifndef SQLITE_OMIT_AUTOVACUUM - Pgno pgnoPtrmap = pgnoOvfl; /* Overflow page pointer-map entry page */ - if( pBt->autoVacuum ){ - do{ - pgnoOvfl++; - } while( - PTRMAP_ISPAGE(pBt, pgnoOvfl) || pgnoOvfl==PENDING_BYTE_PAGE(pBt) - ); - } -#endif - rc = allocateBtreePage(pBt, &pOvfl, &pgnoOvfl, pgnoOvfl, 0); -#ifndef SQLITE_OMIT_AUTOVACUUM - /* If the database supports auto-vacuum, and the second or subsequent - ** overflow page is being allocated, add an entry to the pointer-map - ** for that page now. - ** - ** If this is the first overflow page, then write a partial entry - ** to the pointer-map. If we write nothing to this pointer-map slot, - ** then the optimistic overflow chain processing in clearCell() - ** may misinterpret the uninitialised values and delete the - ** wrong pages from the database. - */ - if( pBt->autoVacuum && rc==SQLITE_OK ){ - u8 eType = (pgnoPtrmap?PTRMAP_OVERFLOW2:PTRMAP_OVERFLOW1); - ptrmapPut(pBt, pgnoOvfl, eType, pgnoPtrmap, &rc); - if( rc ){ - releasePage(pOvfl); - } - } -#endif - if( rc ){ - releasePage(pToRelease); - return rc; - } - - /* If pToRelease is not zero than pPrior points into the data area - ** of pToRelease. Make sure pToRelease is still writeable. */ - assert( pToRelease==0 || sqlite3PagerIswriteable(pToRelease->pDbPage) ); - - /* If pPrior is part of the data area of pPage, then make sure pPage - ** is still writeable */ - assert( pPrioraData || pPrior>=&pPage->aData[pBt->pageSize] - || sqlite3PagerIswriteable(pPage->pDbPage) ); - - put4byte(pPrior, pgnoOvfl); - releasePage(pToRelease); - pToRelease = pOvfl; - pPrior = pOvfl->aData; - put4byte(pPrior, 0); - pPayload = &pOvfl->aData[4]; - spaceLeft = pBt->usableSize - 4; - } - n = nPayload; - if( n>spaceLeft ) n = spaceLeft; - - /* If pToRelease is not zero than pPayload points into the data area - ** of pToRelease. Make sure pToRelease is still writeable. */ - assert( pToRelease==0 || sqlite3PagerIswriteable(pToRelease->pDbPage) ); - - /* If pPayload is part of the data area of pPage, then make sure pPage - ** is still writeable */ - assert( pPayloadaData || pPayload>=&pPage->aData[pBt->pageSize] - || sqlite3PagerIswriteable(pPage->pDbPage) ); - - if( nSrc>0 ){ - if( n>nSrc ) n = nSrc; - assert( pSrc ); - memcpy(pPayload, pSrc, n); - }else{ - memset(pPayload, 0, n); - } - nPayload -= n; - pPayload += n; - pSrc += n; - nSrc -= n; - spaceLeft -= n; - if( nSrc==0 ){ - nSrc = nData; - pSrc = pData; - } - } - releasePage(pToRelease); - return SQLITE_OK; -} - -/* -** Remove the i-th cell from pPage. This routine effects pPage only. -** The cell content is not freed or deallocated. It is assumed that -** the cell content has been copied someplace else. This routine just -** removes the reference to the cell from pPage. -** -** "sz" must be the number of bytes in the cell. -*/ -static void dropCell(MemPage *pPage, int idx, int sz, int *pRC){ - u32 pc; /* Offset to cell content of cell being deleted */ - u8 *data; /* pPage->aData */ - u8 *ptr; /* Used to move bytes around within data[] */ - u8 *endPtr; /* End of loop */ - int rc; /* The return code */ - int hdr; /* Beginning of the header. 0 most pages. 100 page 1 */ - - if( *pRC ) return; - - assert( idx>=0 && idxnCell ); - assert( sz==cellSize(pPage, idx) ); - assert( sqlite3PagerIswriteable(pPage->pDbPage) ); - assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - data = pPage->aData; - ptr = &data[pPage->cellOffset + 2*idx]; - pc = get2byte(ptr); - hdr = pPage->hdrOffset; - testcase( pc==get2byte(&data[hdr+5]) ); - testcase( pc+sz==pPage->pBt->usableSize ); - if( pc < (u32)get2byte(&data[hdr+5]) || pc+sz > pPage->pBt->usableSize ){ - *pRC = SQLITE_CORRUPT_BKPT; - return; - } - rc = freeSpace(pPage, pc, sz); - if( rc ){ - *pRC = rc; - return; - } - endPtr = &data[pPage->cellOffset + 2*pPage->nCell - 2]; - assert( (SQLITE_PTR_TO_INT(ptr)&1)==0 ); /* ptr is always 2-byte aligned */ - while( ptrnCell--; - put2byte(&data[hdr+3], pPage->nCell); - pPage->nFree += 2; -} - -/* -** Insert a new cell on pPage at cell index "i". pCell points to the -** content of the cell. -** -** If the cell content will fit on the page, then put it there. If it -** will not fit, then make a copy of the cell content into pTemp if -** pTemp is not null. Regardless of pTemp, allocate a new entry -** in pPage->aOvfl[] and make it point to the cell content (either -** in pTemp or the original pCell) and also record its index. -** Allocating a new entry in pPage->aCell[] implies that -** pPage->nOverflow is incremented. -** -** If nSkip is non-zero, then do not copy the first nSkip bytes of the -** cell. The caller will overwrite them after this function returns. If -** nSkip is non-zero, then pCell may not point to an invalid memory location -** (but pCell+nSkip is always valid). -*/ -static void insertCell( - MemPage *pPage, /* Page into which we are copying */ - int i, /* New cell becomes the i-th cell of the page */ - u8 *pCell, /* Content of the new cell */ - int sz, /* Bytes of content in pCell */ - u8 *pTemp, /* Temp storage space for pCell, if needed */ - Pgno iChild, /* If non-zero, replace first 4 bytes with this value */ - int *pRC /* Read and write return code from here */ -){ - int idx = 0; /* Where to write new cell content in data[] */ - int j; /* Loop counter */ - int end; /* First byte past the last cell pointer in data[] */ - int ins; /* Index in data[] where new cell pointer is inserted */ - int cellOffset; /* Address of first cell pointer in data[] */ - u8 *data; /* The content of the whole page */ - u8 *ptr; /* Used for moving information around in data[] */ - u8 *endPtr; /* End of the loop */ - - int nSkip = (iChild ? 4 : 0); - - if( *pRC ) return; - - assert( i>=0 && i<=pPage->nCell+pPage->nOverflow ); - assert( pPage->nCell<=MX_CELL(pPage->pBt) && MX_CELL(pPage->pBt)<=10921 ); - assert( pPage->nOverflow<=ArraySize(pPage->aOvfl) ); - assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - /* The cell should normally be sized correctly. However, when moving a - ** malformed cell from a leaf page to an interior page, if the cell size - ** wanted to be less than 4 but got rounded up to 4 on the leaf, then size - ** might be less than 8 (leaf-size + pointer) on the interior node. Hence - ** the term after the || in the following assert(). */ - assert( sz==cellSizePtr(pPage, pCell) || (sz==8 && iChild>0) ); - if( pPage->nOverflow || sz+2>pPage->nFree ){ - if( pTemp ){ - memcpy(pTemp+nSkip, pCell+nSkip, sz-nSkip); - pCell = pTemp; - } - if( iChild ){ - put4byte(pCell, iChild); - } - j = pPage->nOverflow++; - assert( j<(int)(sizeof(pPage->aOvfl)/sizeof(pPage->aOvfl[0])) ); - pPage->aOvfl[j].pCell = pCell; - pPage->aOvfl[j].idx = (u16)i; - }else{ - int rc = sqlite3PagerWrite(pPage->pDbPage); - if( rc!=SQLITE_OK ){ - *pRC = rc; - return; - } - assert( sqlite3PagerIswriteable(pPage->pDbPage) ); - data = pPage->aData; - cellOffset = pPage->cellOffset; - end = cellOffset + 2*pPage->nCell; - ins = cellOffset + 2*i; - rc = allocateSpace(pPage, sz, &idx); - if( rc ){ *pRC = rc; return; } - /* The allocateSpace() routine guarantees the following two properties - ** if it returns success */ - assert( idx >= end+2 ); - assert( idx+sz <= (int)pPage->pBt->usableSize ); - pPage->nCell++; - pPage->nFree -= (u16)(2 + sz); - memcpy(&data[idx+nSkip], pCell+nSkip, sz-nSkip); - if( iChild ){ - put4byte(&data[idx], iChild); - } - ptr = &data[end]; - endPtr = &data[ins]; - assert( (SQLITE_PTR_TO_INT(ptr)&1)==0 ); /* ptr is always 2-byte aligned */ - while( ptr>endPtr ){ - *(u16*)ptr = *(u16*)&ptr[-2]; - ptr -= 2; - } - put2byte(&data[ins], idx); - put2byte(&data[pPage->hdrOffset+3], pPage->nCell); -#ifndef SQLITE_OMIT_AUTOVACUUM - if( pPage->pBt->autoVacuum ){ - /* The cell may contain a pointer to an overflow page. If so, write - ** the entry for the overflow page into the pointer map. - */ - ptrmapPutOvflPtr(pPage, pCell, pRC); - } -#endif - } -} - -/* -** Add a list of cells to a page. The page should be initially empty. -** The cells are guaranteed to fit on the page. -*/ -static void assemblePage( - MemPage *pPage, /* The page to be assemblied */ - int nCell, /* The number of cells to add to this page */ - u8 **apCell, /* Pointers to cell bodies */ - u16 *aSize /* Sizes of the cells */ -){ - int i; /* Loop counter */ - u8 *pCellptr; /* Address of next cell pointer */ - int cellbody; /* Address of next cell body */ - u8 * const data = pPage->aData; /* Pointer to data for pPage */ - const int hdr = pPage->hdrOffset; /* Offset of header on pPage */ - const int nUsable = pPage->pBt->usableSize; /* Usable size of page */ - - assert( pPage->nOverflow==0 ); - assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - assert( nCell>=0 && nCell<=(int)MX_CELL(pPage->pBt) - && (int)MX_CELL(pPage->pBt)<=10921); - assert( sqlite3PagerIswriteable(pPage->pDbPage) ); - - /* Check that the page has just been zeroed by zeroPage() */ - assert( pPage->nCell==0 ); - assert( get2byteNotZero(&data[hdr+5])==nUsable ); - - pCellptr = &data[pPage->cellOffset + nCell*2]; - cellbody = nUsable; - for(i=nCell-1; i>=0; i--){ - u16 sz = aSize[i]; - pCellptr -= 2; - cellbody -= sz; - put2byte(pCellptr, cellbody); - memcpy(&data[cellbody], apCell[i], sz); - } - put2byte(&data[hdr+3], nCell); - put2byte(&data[hdr+5], cellbody); - pPage->nFree -= (nCell*2 + nUsable - cellbody); - pPage->nCell = (u16)nCell; -} - -/* -** The following parameters determine how many adjacent pages get involved -** in a balancing operation. NN is the number of neighbors on either side -** of the page that participate in the balancing operation. NB is the -** total number of pages that participate, including the target page and -** NN neighbors on either side. -** -** The minimum value of NN is 1 (of course). Increasing NN above 1 -** (to 2 or 3) gives a modest improvement in SELECT and DELETE performance -** in exchange for a larger degradation in INSERT and UPDATE performance. -** The value of NN appears to give the best results overall. -*/ -#define NN 1 /* Number of neighbors on either side of pPage */ -#define NB (NN*2+1) /* Total pages involved in the balance */ - - -#ifndef SQLITE_OMIT_QUICKBALANCE -/* -** This version of balance() handles the common special case where -** a new entry is being inserted on the extreme right-end of the -** tree, in other words, when the new entry will become the largest -** entry in the tree. -** -** Instead of trying to balance the 3 right-most leaf pages, just add -** a new page to the right-hand side and put the one new entry in -** that page. This leaves the right side of the tree somewhat -** unbalanced. But odds are that we will be inserting new entries -** at the end soon afterwards so the nearly empty page will quickly -** fill up. On average. -** -** pPage is the leaf page which is the right-most page in the tree. -** pParent is its parent. pPage must have a single overflow entry -** which is also the right-most entry on the page. -** -** The pSpace buffer is used to store a temporary copy of the divider -** cell that will be inserted into pParent. Such a cell consists of a 4 -** byte page number followed by a variable length integer. In other -** words, at most 13 bytes. Hence the pSpace buffer must be at -** least 13 bytes in size. -*/ -static int balance_quick(MemPage *pParent, MemPage *pPage, u8 *pSpace){ - BtShared *const pBt = pPage->pBt; /* B-Tree Database */ - MemPage *pNew; /* Newly allocated page */ - int rc; /* Return Code */ - Pgno pgnoNew; /* Page number of pNew */ - - assert( sqlite3_mutex_held(pPage->pBt->mutex) ); - assert( sqlite3PagerIswriteable(pParent->pDbPage) ); - assert( pPage->nOverflow==1 ); - - /* This error condition is now caught prior to reaching this function */ - if( pPage->nCell<=0 ) return SQLITE_CORRUPT_BKPT; - - /* Allocate a new page. This page will become the right-sibling of - ** pPage. Make the parent page writable, so that the new divider cell - ** may be inserted. If both these operations are successful, proceed. - */ - rc = allocateBtreePage(pBt, &pNew, &pgnoNew, 0, 0); - - if( rc==SQLITE_OK ){ - - u8 *pOut = &pSpace[4]; - u8 *pCell = pPage->aOvfl[0].pCell; - u16 szCell = cellSizePtr(pPage, pCell); - u8 *pStop; - - assert( sqlite3PagerIswriteable(pNew->pDbPage) ); - assert( pPage->aData[0]==(PTF_INTKEY|PTF_LEAFDATA|PTF_LEAF) ); - zeroPage(pNew, PTF_INTKEY|PTF_LEAFDATA|PTF_LEAF); - assemblePage(pNew, 1, &pCell, &szCell); - - /* If this is an auto-vacuum database, update the pointer map - ** with entries for the new page, and any pointer from the - ** cell on the page to an overflow page. If either of these - ** operations fails, the return code is set, but the contents - ** of the parent page are still manipulated by thh code below. - ** That is Ok, at this point the parent page is guaranteed to - ** be marked as dirty. Returning an error code will cause a - ** rollback, undoing any changes made to the parent page. - */ - if( ISAUTOVACUUM ){ - ptrmapPut(pBt, pgnoNew, PTRMAP_BTREE, pParent->pgno, &rc); - if( szCell>pNew->minLocal ){ - ptrmapPutOvflPtr(pNew, pCell, &rc); - } - } - - /* Create a divider cell to insert into pParent. The divider cell - ** consists of a 4-byte page number (the page number of pPage) and - ** a variable length key value (which must be the same value as the - ** largest key on pPage). - ** - ** To find the largest key value on pPage, first find the right-most - ** cell on pPage. The first two fields of this cell are the - ** record-length (a variable length integer at most 32-bits in size) - ** and the key value (a variable length integer, may have any value). - ** The first of the while(...) loops below skips over the record-length - ** field. The second while(...) loop copies the key value from the - ** cell on pPage into the pSpace buffer. - */ - pCell = findCell(pPage, pPage->nCell-1); - pStop = &pCell[9]; - while( (*(pCell++)&0x80) && pCellnCell, pSpace, (int)(pOut-pSpace), - 0, pPage->pgno, &rc); - - /* Set the right-child pointer of pParent to point to the new page. */ - put4byte(&pParent->aData[pParent->hdrOffset+8], pgnoNew); - - /* Release the reference to the new page. */ - releasePage(pNew); - } - - return rc; -} -#endif /* SQLITE_OMIT_QUICKBALANCE */ - -#if 0 -/* -** This function does not contribute anything to the operation of SQLite. -** it is sometimes activated temporarily while debugging code responsible -** for setting pointer-map entries. -*/ -static int ptrmapCheckPages(MemPage **apPage, int nPage){ - int i, j; - for(i=0; ipBt; - assert( pPage->isInit ); - - for(j=0; jnCell; j++){ - CellInfo info; - u8 *z; - - z = findCell(pPage, j); - btreeParseCellPtr(pPage, z, &info); - if( info.iOverflow ){ - Pgno ovfl = get4byte(&z[info.iOverflow]); - ptrmapGet(pBt, ovfl, &e, &n); - assert( n==pPage->pgno && e==PTRMAP_OVERFLOW1 ); - } - if( !pPage->leaf ){ - Pgno child = get4byte(z); - ptrmapGet(pBt, child, &e, &n); - assert( n==pPage->pgno && e==PTRMAP_BTREE ); - } - } - if( !pPage->leaf ){ - Pgno child = get4byte(&pPage->aData[pPage->hdrOffset+8]); - ptrmapGet(pBt, child, &e, &n); - assert( n==pPage->pgno && e==PTRMAP_BTREE ); - } - } - return 1; -} -#endif - -/* -** This function is used to copy the contents of the b-tree node stored -** on page pFrom to page pTo. If page pFrom was not a leaf page, then -** the pointer-map entries for each child page are updated so that the -** parent page stored in the pointer map is page pTo. If pFrom contained -** any cells with overflow page pointers, then the corresponding pointer -** map entries are also updated so that the parent page is page pTo. -** -** If pFrom is currently carrying any overflow cells (entries in the -** MemPage.aOvfl[] array), they are not copied to pTo. -** -** Before returning, page pTo is reinitialized using btreeInitPage(). -** -** The performance of this function is not critical. It is only used by -** the balance_shallower() and balance_deeper() procedures, neither of -** which are called often under normal circumstances. -*/ -static void copyNodeContent(MemPage *pFrom, MemPage *pTo, int *pRC){ - if( (*pRC)==SQLITE_OK ){ - BtShared * const pBt = pFrom->pBt; - u8 * const aFrom = pFrom->aData; - u8 * const aTo = pTo->aData; - int const iFromHdr = pFrom->hdrOffset; - int const iToHdr = ((pTo->pgno==1) ? 100 : 0); - int rc; - int iData; - - - assert( pFrom->isInit ); - assert( pFrom->nFree>=iToHdr ); - assert( get2byte(&aFrom[iFromHdr+5]) <= (int)pBt->usableSize ); - - /* Copy the b-tree node content from page pFrom to page pTo. */ - iData = get2byte(&aFrom[iFromHdr+5]); - memcpy(&aTo[iData], &aFrom[iData], pBt->usableSize-iData); - memcpy(&aTo[iToHdr], &aFrom[iFromHdr], pFrom->cellOffset + 2*pFrom->nCell); - - /* Reinitialize page pTo so that the contents of the MemPage structure - ** match the new data. The initialization of pTo can actually fail under - ** fairly obscure circumstances, even though it is a copy of initialized - ** page pFrom. - */ - pTo->isInit = 0; - rc = btreeInitPage(pTo); - if( rc!=SQLITE_OK ){ - *pRC = rc; - return; - } - - /* If this is an auto-vacuum database, update the pointer-map entries - ** for any b-tree or overflow pages that pTo now contains the pointers to. - */ - if( ISAUTOVACUUM ){ - *pRC = setChildPtrmaps(pTo); - } - } -} - -/* -** This routine redistributes cells on the iParentIdx'th child of pParent -** (hereafter "the page") and up to 2 siblings so that all pages have about the -** same amount of free space. Usually a single sibling on either side of the -** page are used in the balancing, though both siblings might come from one -** side if the page is the first or last child of its parent. If the page -** has fewer than 2 siblings (something which can only happen if the page -** is a root page or a child of a root page) then all available siblings -** participate in the balancing. -** -** The number of siblings of the page might be increased or decreased by -** one or two in an effort to keep pages nearly full but not over full. -** -** Note that when this routine is called, some of the cells on the page -** might not actually be stored in MemPage.aData[]. This can happen -** if the page is overfull. This routine ensures that all cells allocated -** to the page and its siblings fit into MemPage.aData[] before returning. -** -** In the course of balancing the page and its siblings, cells may be -** inserted into or removed from the parent page (pParent). Doing so -** may cause the parent page to become overfull or underfull. If this -** happens, it is the responsibility of the caller to invoke the correct -** balancing routine to fix this problem (see the balance() routine). -** -** If this routine fails for any reason, it might leave the database -** in a corrupted state. So if this routine fails, the database should -** be rolled back. -** -** The third argument to this function, aOvflSpace, is a pointer to a -** buffer big enough to hold one page. If while inserting cells into the parent -** page (pParent) the parent page becomes overfull, this buffer is -** used to store the parent's overflow cells. Because this function inserts -** a maximum of four divider cells into the parent page, and the maximum -** size of a cell stored within an internal node is always less than 1/4 -** of the page-size, the aOvflSpace[] buffer is guaranteed to be large -** enough for all overflow cells. -** -** If aOvflSpace is set to a null pointer, this function returns -** SQLITE_NOMEM. -*/ -static int balance_nonroot( - MemPage *pParent, /* Parent page of siblings being balanced */ - int iParentIdx, /* Index of "the page" in pParent */ - u8 *aOvflSpace, /* page-size bytes of space for parent ovfl */ - int isRoot /* True if pParent is a root-page */ -){ - BtShared *pBt; /* The whole database */ - int nCell = 0; /* Number of cells in apCell[] */ - int nMaxCells = 0; /* Allocated size of apCell, szCell, aFrom. */ - int nNew = 0; /* Number of pages in apNew[] */ - int nOld; /* Number of pages in apOld[] */ - int i, j, k; /* Loop counters */ - int nxDiv; /* Next divider slot in pParent->aCell[] */ - int rc = SQLITE_OK; /* The return code */ - u16 leafCorrection; /* 4 if pPage is a leaf. 0 if not */ - int leafData; /* True if pPage is a leaf of a LEAFDATA tree */ - int usableSpace; /* Bytes in pPage beyond the header */ - int pageFlags; /* Value of pPage->aData[0] */ - int subtotal; /* Subtotal of bytes in cells on one page */ - int iSpace1 = 0; /* First unused byte of aSpace1[] */ - int iOvflSpace = 0; /* First unused byte of aOvflSpace[] */ - int szScratch; /* Size of scratch memory requested */ - MemPage *apOld[NB]; /* pPage and up to two siblings */ - MemPage *apCopy[NB]; /* Private copies of apOld[] pages */ - MemPage *apNew[NB+2]; /* pPage and up to NB siblings after balancing */ - u8 *pRight; /* Location in parent of right-sibling pointer */ - u8 *apDiv[NB-1]; /* Divider cells in pParent */ - int cntNew[NB+2]; /* Index in aCell[] of cell after i-th page */ - int szNew[NB+2]; /* Combined size of cells place on i-th page */ - u8 **apCell = 0; /* All cells begin balanced */ - u16 *szCell; /* Local size of all cells in apCell[] */ - u8 *aSpace1; /* Space for copies of dividers cells */ - Pgno pgno; /* Temp var to store a page number in */ - - pBt = pParent->pBt; - assert( sqlite3_mutex_held(pBt->mutex) ); - assert( sqlite3PagerIswriteable(pParent->pDbPage) ); - -#if 0 - TRACE(("BALANCE: begin page %d child of %d\n", pPage->pgno, pParent->pgno)); -#endif - - /* At this point pParent may have at most one overflow cell. And if - ** this overflow cell is present, it must be the cell with - ** index iParentIdx. This scenario comes about when this function - ** is called (indirectly) from sqlite3BtreeDelete(). - */ - assert( pParent->nOverflow==0 || pParent->nOverflow==1 ); - assert( pParent->nOverflow==0 || pParent->aOvfl[0].idx==iParentIdx ); - - if( !aOvflSpace ){ - return SQLITE_NOMEM; - } - - /* Find the sibling pages to balance. Also locate the cells in pParent - ** that divide the siblings. An attempt is made to find NN siblings on - ** either side of pPage. More siblings are taken from one side, however, - ** if there are fewer than NN siblings on the other side. If pParent - ** has NB or fewer children then all children of pParent are taken. - ** - ** This loop also drops the divider cells from the parent page. This - ** way, the remainder of the function does not have to deal with any - ** overflow cells in the parent page, since if any existed they will - ** have already been removed. - */ - i = pParent->nOverflow + pParent->nCell; - if( i<2 ){ - nxDiv = 0; - nOld = i+1; - }else{ - nOld = 3; - if( iParentIdx==0 ){ - nxDiv = 0; - }else if( iParentIdx==i ){ - nxDiv = i-2; - }else{ - nxDiv = iParentIdx-1; - } - i = 2; - } - if( (i+nxDiv-pParent->nOverflow)==pParent->nCell ){ - pRight = &pParent->aData[pParent->hdrOffset+8]; - }else{ - pRight = findCell(pParent, i+nxDiv-pParent->nOverflow); - } - pgno = get4byte(pRight); - while( 1 ){ - rc = getAndInitPage(pBt, pgno, &apOld[i]); - if( rc ){ - memset(apOld, 0, (i+1)*sizeof(MemPage*)); - goto balance_cleanup; - } - nMaxCells += 1+apOld[i]->nCell+apOld[i]->nOverflow; - if( (i--)==0 ) break; - - if( i+nxDiv==pParent->aOvfl[0].idx && pParent->nOverflow ){ - apDiv[i] = pParent->aOvfl[0].pCell; - pgno = get4byte(apDiv[i]); - szNew[i] = cellSizePtr(pParent, apDiv[i]); - pParent->nOverflow = 0; - }else{ - apDiv[i] = findCell(pParent, i+nxDiv-pParent->nOverflow); - pgno = get4byte(apDiv[i]); - szNew[i] = cellSizePtr(pParent, apDiv[i]); - - /* Drop the cell from the parent page. apDiv[i] still points to - ** the cell within the parent, even though it has been dropped. - ** This is safe because dropping a cell only overwrites the first - ** four bytes of it, and this function does not need the first - ** four bytes of the divider cell. So the pointer is safe to use - ** later on. - ** - ** But not if we are in secure-delete mode. In secure-delete mode, - ** the dropCell() routine will overwrite the entire cell with zeroes. - ** In this case, temporarily copy the cell into the aOvflSpace[] - ** buffer. It will be copied out again as soon as the aSpace[] buffer - ** is allocated. */ - if( pBt->secureDelete ){ - int iOff; - - iOff = SQLITE_PTR_TO_INT(apDiv[i]) - SQLITE_PTR_TO_INT(pParent->aData); - if( (iOff+szNew[i])>(int)pBt->usableSize ){ - rc = SQLITE_CORRUPT_BKPT; - memset(apOld, 0, (i+1)*sizeof(MemPage*)); - goto balance_cleanup; - }else{ - memcpy(&aOvflSpace[iOff], apDiv[i], szNew[i]); - apDiv[i] = &aOvflSpace[apDiv[i]-pParent->aData]; - } - } - dropCell(pParent, i+nxDiv-pParent->nOverflow, szNew[i], &rc); - } - } - - /* Make nMaxCells a multiple of 4 in order to preserve 8-byte - ** alignment */ - nMaxCells = (nMaxCells + 3)&~3; - - /* - ** Allocate space for memory structures - */ - k = pBt->pageSize + ROUND8(sizeof(MemPage)); - szScratch = - nMaxCells*sizeof(u8*) /* apCell */ - + nMaxCells*sizeof(u16) /* szCell */ - + pBt->pageSize /* aSpace1 */ - + k*nOld; /* Page copies (apCopy) */ - apCell = sqlite3ScratchMalloc( szScratch ); - if( apCell==0 ){ - rc = SQLITE_NOMEM; - goto balance_cleanup; - } - szCell = (u16*)&apCell[nMaxCells]; - aSpace1 = (u8*)&szCell[nMaxCells]; - assert( EIGHT_BYTE_ALIGNMENT(aSpace1) ); - - /* - ** Load pointers to all cells on sibling pages and the divider cells - ** into the local apCell[] array. Make copies of the divider cells - ** into space obtained from aSpace1[] and remove the the divider Cells - ** from pParent. - ** - ** If the siblings are on leaf pages, then the child pointers of the - ** divider cells are stripped from the cells before they are copied - ** into aSpace1[]. In this way, all cells in apCell[] are without - ** child pointers. If siblings are not leaves, then all cell in - ** apCell[] include child pointers. Either way, all cells in apCell[] - ** are alike. - ** - ** leafCorrection: 4 if pPage is a leaf. 0 if pPage is not a leaf. - ** leafData: 1 if pPage holds key+data and pParent holds only keys. - */ - leafCorrection = apOld[0]->leaf*4; - leafData = apOld[0]->hasData; - for(i=0; ipageSize + k*i]; - memcpy(pOld, apOld[i], sizeof(MemPage)); - pOld->aData = (void*)&pOld[1]; - memcpy(pOld->aData, apOld[i]->aData, pBt->pageSize); - - limit = pOld->nCell+pOld->nOverflow; - if( pOld->nOverflow>0 ){ - for(j=0; jaData; - u16 maskPage = pOld->maskPage; - u16 cellOffset = pOld->cellOffset; - for(j=0; jmaxLocal+23 ); - assert( iSpace1 <= (int)pBt->pageSize ); - memcpy(pTemp, apDiv[i], sz); - apCell[nCell] = pTemp+leafCorrection; - assert( leafCorrection==0 || leafCorrection==4 ); - szCell[nCell] = szCell[nCell] - leafCorrection; - if( !pOld->leaf ){ - assert( leafCorrection==0 ); - assert( pOld->hdrOffset==0 ); - /* The right pointer of the child page pOld becomes the left - ** pointer of the divider cell */ - memcpy(apCell[nCell], &pOld->aData[8], 4); - }else{ - assert( leafCorrection==4 ); - if( szCell[nCell]<4 ){ - /* Do not allow any cells smaller than 4 bytes. */ - szCell[nCell] = 4; - } - } - nCell++; - } - } - - /* - ** Figure out the number of pages needed to hold all nCell cells. - ** Store this number in "k". Also compute szNew[] which is the total - ** size of all cells on the i-th page and cntNew[] which is the index - ** in apCell[] of the cell that divides page i from page i+1. - ** cntNew[k] should equal nCell. - ** - ** Values computed by this block: - ** - ** k: The total number of sibling pages - ** szNew[i]: Spaced used on the i-th sibling page. - ** cntNew[i]: Index in apCell[] and szCell[] for the first cell to - ** the right of the i-th sibling page. - ** usableSpace: Number of bytes of space available on each sibling. - ** - */ - usableSpace = pBt->usableSize - 12 + leafCorrection; - for(subtotal=k=i=0; i usableSpace ){ - szNew[k] = subtotal - szCell[i]; - cntNew[k] = i; - if( leafData ){ i--; } - subtotal = 0; - k++; - if( k>NB+1 ){ rc = SQLITE_CORRUPT_BKPT; goto balance_cleanup; } - } - } - szNew[k] = subtotal; - cntNew[k] = nCell; - k++; - - /* - ** The packing computed by the previous block is biased toward the siblings - ** on the left side. The left siblings are always nearly full, while the - ** right-most sibling might be nearly empty. This block of code attempts - ** to adjust the packing of siblings to get a better balance. - ** - ** This adjustment is more than an optimization. The packing above might - ** be so out of balance as to be illegal. For example, the right-most - ** sibling might be completely empty. This adjustment is not optional. - */ - for(i=k-1; i>0; i--){ - int szRight = szNew[i]; /* Size of sibling on the right */ - int szLeft = szNew[i-1]; /* Size of sibling on the left */ - int r; /* Index of right-most cell in left sibling */ - int d; /* Index of first cell to the left of right sibling */ - - r = cntNew[i-1] - 1; - d = r + 1 - leafData; - assert( d0) or pPage is - ** a virtual root page. A virtual root page is when the real root - ** page is page 1 and we are the only child of that page. - */ - assert( cntNew[0]>0 || (pParent->pgno==1 && pParent->nCell==0) ); - - TRACE(("BALANCE: old: %d %d %d ", - apOld[0]->pgno, - nOld>=2 ? apOld[1]->pgno : 0, - nOld>=3 ? apOld[2]->pgno : 0 - )); - - /* - ** Allocate k new pages. Reuse old pages where possible. - */ - if( apOld[0]->pgno<=1 ){ - rc = SQLITE_CORRUPT_BKPT; - goto balance_cleanup; - } - pageFlags = apOld[0]->aData[0]; - for(i=0; ipDbPage); - nNew++; - if( rc ) goto balance_cleanup; - }else{ - assert( i>0 ); - rc = allocateBtreePage(pBt, &pNew, &pgno, pgno, 0); - if( rc ) goto balance_cleanup; - apNew[i] = pNew; - nNew++; - - /* Set the pointer-map entry for the new sibling page. */ - if( ISAUTOVACUUM ){ - ptrmapPut(pBt, pNew->pgno, PTRMAP_BTREE, pParent->pgno, &rc); - if( rc!=SQLITE_OK ){ - goto balance_cleanup; - } - } - } - } - - /* Free any old pages that were not reused as new pages. - */ - while( ipgno; - int minI = i; - for(j=i+1; jpgno<(unsigned)minV ){ - minI = j; - minV = apNew[j]->pgno; - } - } - if( minI>i ){ - MemPage *pT; - pT = apNew[i]; - apNew[i] = apNew[minI]; - apNew[minI] = pT; - } - } - TRACE(("new: %d(%d) %d(%d) %d(%d) %d(%d) %d(%d)\n", - apNew[0]->pgno, szNew[0], - nNew>=2 ? apNew[1]->pgno : 0, nNew>=2 ? szNew[1] : 0, - nNew>=3 ? apNew[2]->pgno : 0, nNew>=3 ? szNew[2] : 0, - nNew>=4 ? apNew[3]->pgno : 0, nNew>=4 ? szNew[3] : 0, - nNew>=5 ? apNew[4]->pgno : 0, nNew>=5 ? szNew[4] : 0)); - - assert( sqlite3PagerIswriteable(pParent->pDbPage) ); - put4byte(pRight, apNew[nNew-1]->pgno); - - /* - ** Evenly distribute the data in apCell[] across the new pages. - ** Insert divider cells into pParent as necessary. - */ - j = 0; - for(i=0; inCell>0 || (nNew==1 && cntNew[0]==0) ); - assert( pNew->nOverflow==0 ); - - j = cntNew[i]; - - /* If the sibling page assembled above was not the right-most sibling, - ** insert a divider cell into the parent page. - */ - assert( ileaf ){ - memcpy(&pNew->aData[8], pCell, 4); - }else if( leafData ){ - /* If the tree is a leaf-data tree, and the siblings are leaves, - ** then there is no divider cell in apCell[]. Instead, the divider - ** cell consists of the integer key for the right-most cell of - ** the sibling-page assembled above only. - */ - CellInfo info; - j--; - btreeParseCellPtr(pNew, apCell[j], &info); - pCell = pTemp; - sz = 4 + putVarint(&pCell[4], info.nKey); - pTemp = 0; - }else{ - pCell -= 4; - /* Obscure case for non-leaf-data trees: If the cell at pCell was - ** previously stored on a leaf node, and its reported size was 4 - ** bytes, then it may actually be smaller than this - ** (see btreeParseCellPtr(), 4 bytes is the minimum size of - ** any cell). But it is important to pass the correct size to - ** insertCell(), so reparse the cell now. - ** - ** Note that this can never happen in an SQLite data file, as all - ** cells are at least 4 bytes. It only happens in b-trees used - ** to evaluate "IN (SELECT ...)" and similar clauses. - */ - if( szCell[j]==4 ){ - assert(leafCorrection==4); - sz = cellSizePtr(pParent, pCell); - } - } - iOvflSpace += sz; - assert( sz<=pBt->maxLocal+23 ); - assert( iOvflSpace <= (int)pBt->pageSize ); - insertCell(pParent, nxDiv, pCell, sz, pTemp, pNew->pgno, &rc); - if( rc!=SQLITE_OK ) goto balance_cleanup; - assert( sqlite3PagerIswriteable(pParent->pDbPage) ); - - j++; - nxDiv++; - } - } - assert( j==nCell ); - assert( nOld>0 ); - assert( nNew>0 ); - if( (pageFlags & PTF_LEAF)==0 ){ - u8 *zChild = &apCopy[nOld-1]->aData[8]; - memcpy(&apNew[nNew-1]->aData[8], zChild, 4); - } - - if( isRoot && pParent->nCell==0 && pParent->hdrOffset<=apNew[0]->nFree ){ - /* The root page of the b-tree now contains no cells. The only sibling - ** page is the right-child of the parent. Copy the contents of the - ** child page into the parent, decreasing the overall height of the - ** b-tree structure by one. This is described as the "balance-shallower" - ** sub-algorithm in some documentation. - ** - ** If this is an auto-vacuum database, the call to copyNodeContent() - ** sets all pointer-map entries corresponding to database image pages - ** for which the pointer is stored within the content being copied. - ** - ** The second assert below verifies that the child page is defragmented - ** (it must be, as it was just reconstructed using assemblePage()). This - ** is important if the parent page happens to be page 1 of the database - ** image. */ - assert( nNew==1 ); - assert( apNew[0]->nFree == - (get2byte(&apNew[0]->aData[5])-apNew[0]->cellOffset-apNew[0]->nCell*2) - ); - copyNodeContent(apNew[0], pParent, &rc); - freePage(apNew[0], &rc); - }else if( ISAUTOVACUUM ){ - /* Fix the pointer-map entries for all the cells that were shifted around. - ** There are several different types of pointer-map entries that need to - ** be dealt with by this routine. Some of these have been set already, but - ** many have not. The following is a summary: - ** - ** 1) The entries associated with new sibling pages that were not - ** siblings when this function was called. These have already - ** been set. We don't need to worry about old siblings that were - ** moved to the free-list - the freePage() code has taken care - ** of those. - ** - ** 2) The pointer-map entries associated with the first overflow - ** page in any overflow chains used by new divider cells. These - ** have also already been taken care of by the insertCell() code. - ** - ** 3) If the sibling pages are not leaves, then the child pages of - ** cells stored on the sibling pages may need to be updated. - ** - ** 4) If the sibling pages are not internal intkey nodes, then any - ** overflow pages used by these cells may need to be updated - ** (internal intkey nodes never contain pointers to overflow pages). - ** - ** 5) If the sibling pages are not leaves, then the pointer-map - ** entries for the right-child pages of each sibling may need - ** to be updated. - ** - ** Cases 1 and 2 are dealt with above by other code. The next - ** block deals with cases 3 and 4 and the one after that, case 5. Since - ** setting a pointer map entry is a relatively expensive operation, this - ** code only sets pointer map entries for child or overflow pages that have - ** actually moved between pages. */ - MemPage *pNew = apNew[0]; - MemPage *pOld = apCopy[0]; - int nOverflow = pOld->nOverflow; - int iNextOld = pOld->nCell + nOverflow; - int iOverflow = (nOverflow ? pOld->aOvfl[0].idx : -1); - j = 0; /* Current 'old' sibling page */ - k = 0; /* Current 'new' sibling page */ - for(i=0; inCell + pOld->nOverflow; - if( pOld->nOverflow ){ - nOverflow = pOld->nOverflow; - iOverflow = i + !leafData + pOld->aOvfl[0].idx; - } - isDivider = !leafData; - } - - assert(nOverflow>0 || iOverflowaOvfl[0].idx==pOld->aOvfl[1].idx-1); - assert(nOverflow<3 || pOld->aOvfl[1].idx==pOld->aOvfl[2].idx-1); - if( i==iOverflow ){ - isDivider = 1; - if( (--nOverflow)>0 ){ - iOverflow++; - } - } - - if( i==cntNew[k] ){ - /* Cell i is the cell immediately following the last cell on new - ** sibling page k. If the siblings are not leaf pages of an - ** intkey b-tree, then cell i is a divider cell. */ - pNew = apNew[++k]; - if( !leafData ) continue; - } - assert( jpgno!=pNew->pgno ){ - if( !leafCorrection ){ - ptrmapPut(pBt, get4byte(apCell[i]), PTRMAP_BTREE, pNew->pgno, &rc); - } - if( szCell[i]>pNew->minLocal ){ - ptrmapPutOvflPtr(pNew, apCell[i], &rc); - } - } - } - - if( !leafCorrection ){ - for(i=0; iaData[8]); - ptrmapPut(pBt, key, PTRMAP_BTREE, apNew[i]->pgno, &rc); - } - } - -#if 0 - /* The ptrmapCheckPages() contains assert() statements that verify that - ** all pointer map pages are set correctly. This is helpful while - ** debugging. This is usually disabled because a corrupt database may - ** cause an assert() statement to fail. */ - ptrmapCheckPages(apNew, nNew); - ptrmapCheckPages(&pParent, 1); -#endif - } - - assert( pParent->isInit ); - TRACE(("BALANCE: finished: old=%d new=%d cells=%d\n", - nOld, nNew, nCell)); - - /* - ** Cleanup before returning. - */ -balance_cleanup: - sqlite3ScratchFree(apCell); - for(i=0; ipBt; /* The BTree */ - - assert( pRoot->nOverflow>0 ); - assert( sqlite3_mutex_held(pBt->mutex) ); - - /* Make pRoot, the root page of the b-tree, writable. Allocate a new - ** page that will become the new right-child of pPage. Copy the contents - ** of the node stored on pRoot into the new child page. - */ - rc = sqlite3PagerWrite(pRoot->pDbPage); - if( rc==SQLITE_OK ){ - rc = allocateBtreePage(pBt,&pChild,&pgnoChild,pRoot->pgno,0); - copyNodeContent(pRoot, pChild, &rc); - if( ISAUTOVACUUM ){ - ptrmapPut(pBt, pgnoChild, PTRMAP_BTREE, pRoot->pgno, &rc); - } - } - if( rc ){ - *ppChild = 0; - releasePage(pChild); - return rc; - } - assert( sqlite3PagerIswriteable(pChild->pDbPage) ); - assert( sqlite3PagerIswriteable(pRoot->pDbPage) ); - assert( pChild->nCell==pRoot->nCell ); - - TRACE(("BALANCE: copy root %d into %d\n", pRoot->pgno, pChild->pgno)); - - /* Copy the overflow cells from pRoot to pChild */ - memcpy(pChild->aOvfl, pRoot->aOvfl, pRoot->nOverflow*sizeof(pRoot->aOvfl[0])); - pChild->nOverflow = pRoot->nOverflow; - - /* Zero the contents of pRoot. Then install pChild as the right-child. */ - zeroPage(pRoot, pChild->aData[0] & ~PTF_LEAF); - put4byte(&pRoot->aData[pRoot->hdrOffset+8], pgnoChild); - - *ppChild = pChild; - return SQLITE_OK; -} - -/* -** The page that pCur currently points to has just been modified in -** some way. This function figures out if this modification means the -** tree needs to be balanced, and if so calls the appropriate balancing -** routine. Balancing routines are: -** -** balance_quick() -** balance_deeper() -** balance_nonroot() -*/ -static int balance(BtCursor *pCur){ - int rc = SQLITE_OK; - const int nMin = pCur->pBt->usableSize * 2 / 3; - u8 aBalanceQuickSpace[13]; - u8 *pFree = 0; - - TESTONLY( int balance_quick_called = 0 ); - TESTONLY( int balance_deeper_called = 0 ); - - do { - int iPage = pCur->iPage; - MemPage *pPage = pCur->apPage[iPage]; - - if( iPage==0 ){ - if( pPage->nOverflow ){ - /* The root page of the b-tree is overfull. In this case call the - ** balance_deeper() function to create a new child for the root-page - ** and copy the current contents of the root-page to it. The - ** next iteration of the do-loop will balance the child page. - */ - assert( (balance_deeper_called++)==0 ); - rc = balance_deeper(pPage, &pCur->apPage[1]); - if( rc==SQLITE_OK ){ - pCur->iPage = 1; - pCur->aiIdx[0] = 0; - pCur->aiIdx[1] = 0; - assert( pCur->apPage[1]->nOverflow ); - } - }else{ - break; - } - }else if( pPage->nOverflow==0 && pPage->nFree<=nMin ){ - break; - }else{ - MemPage * const pParent = pCur->apPage[iPage-1]; - int const iIdx = pCur->aiIdx[iPage-1]; - - rc = sqlite3PagerWrite(pParent->pDbPage); - if( rc==SQLITE_OK ){ -#ifndef SQLITE_OMIT_QUICKBALANCE - if( pPage->hasData - && pPage->nOverflow==1 - && pPage->aOvfl[0].idx==pPage->nCell - && pParent->pgno!=1 - && pParent->nCell==iIdx - ){ - /* Call balance_quick() to create a new sibling of pPage on which - ** to store the overflow cell. balance_quick() inserts a new cell - ** into pParent, which may cause pParent overflow. If this - ** happens, the next interation of the do-loop will balance pParent - ** use either balance_nonroot() or balance_deeper(). Until this - ** happens, the overflow cell is stored in the aBalanceQuickSpace[] - ** buffer. - ** - ** The purpose of the following assert() is to check that only a - ** single call to balance_quick() is made for each call to this - ** function. If this were not verified, a subtle bug involving reuse - ** of the aBalanceQuickSpace[] might sneak in. - */ - assert( (balance_quick_called++)==0 ); - rc = balance_quick(pParent, pPage, aBalanceQuickSpace); - }else -#endif - { - /* In this case, call balance_nonroot() to redistribute cells - ** between pPage and up to 2 of its sibling pages. This involves - ** modifying the contents of pParent, which may cause pParent to - ** become overfull or underfull. The next iteration of the do-loop - ** will balance the parent page to correct this. - ** - ** If the parent page becomes overfull, the overflow cell or cells - ** are stored in the pSpace buffer allocated immediately below. - ** A subsequent iteration of the do-loop will deal with this by - ** calling balance_nonroot() (balance_deeper() may be called first, - ** but it doesn't deal with overflow cells - just moves them to a - ** different page). Once this subsequent call to balance_nonroot() - ** has completed, it is safe to release the pSpace buffer used by - ** the previous call, as the overflow cell data will have been - ** copied either into the body of a database page or into the new - ** pSpace buffer passed to the latter call to balance_nonroot(). - */ - u8 *pSpace = sqlite3PageMalloc(pCur->pBt->pageSize); - rc = balance_nonroot(pParent, iIdx, pSpace, iPage==1); - if( pFree ){ - /* If pFree is not NULL, it points to the pSpace buffer used - ** by a previous call to balance_nonroot(). Its contents are - ** now stored either on real database pages or within the - ** new pSpace buffer, so it may be safely freed here. */ - sqlite3PageFree(pFree); - } - - /* The pSpace buffer will be freed after the next call to - ** balance_nonroot(), or just before this function returns, whichever - ** comes first. */ - pFree = pSpace; - } - } - - pPage->nOverflow = 0; - - /* The next iteration of the do-loop balances the parent page. */ - releasePage(pPage); - pCur->iPage--; - } - }while( rc==SQLITE_OK ); - - if( pFree ){ - sqlite3PageFree(pFree); - } - return rc; -} - - -/* -** Insert a new record into the BTree. The key is given by (pKey,nKey) -** and the data is given by (pData,nData). The cursor is used only to -** define what table the record should be inserted into. The cursor -** is left pointing at a random location. -** -** For an INTKEY table, only the nKey value of the key is used. pKey is -** ignored. For a ZERODATA table, the pData and nData are both ignored. -** -** If the seekResult parameter is non-zero, then a successful call to -** MovetoUnpacked() to seek cursor pCur to (pKey, nKey) has already -** been performed. seekResult is the search result returned (a negative -** number if pCur points at an entry that is smaller than (pKey, nKey), or -** a positive value if pCur points at an etry that is larger than -** (pKey, nKey)). -** -** If the seekResult parameter is non-zero, then the caller guarantees that -** cursor pCur is pointing at the existing copy of a row that is to be -** overwritten. If the seekResult parameter is 0, then cursor pCur may -** point to any entry or to no entry at all and so this function has to seek -** the cursor before the new key can be inserted. -*/ -int sqlite3BtreeInsert( - BtCursor *pCur, /* Insert data into the table of this cursor */ - const void *pKey, i64 nKey, /* The key of the new record */ - const void *pData, int nData, /* The data of the new record */ - int nZero, /* Number of extra 0 bytes to append to data */ - int appendBias, /* True if this is likely an append */ - int seekResult /* Result of prior MovetoUnpacked() call */ -){ - int rc; - int loc = seekResult; /* -1: before desired location +1: after */ - int szNew = 0; - int idx; - MemPage *pPage; - Btree *p = pCur->pBtree; - BtShared *pBt = p->pBt; - unsigned char *oldCell; - unsigned char *newCell = 0; - - if( pCur->eState==CURSOR_FAULT ){ - assert( pCur->skipNext!=SQLITE_OK ); - return pCur->skipNext; - } - - assert( cursorHoldsMutex(pCur) ); - assert( pCur->wrFlag && pBt->inTransaction==TRANS_WRITE && !pBt->readOnly ); - assert( hasSharedCacheTableLock(p, pCur->pgnoRoot, pCur->pKeyInfo!=0, 2) ); - - /* Assert that the caller has been consistent. If this cursor was opened - ** expecting an index b-tree, then the caller should be inserting blob - ** keys with no associated data. If the cursor was opened expecting an - ** intkey table, the caller should be inserting integer keys with a - ** blob of associated data. */ - assert( (pKey==0)==(pCur->pKeyInfo==0) ); - - /* If this is an insert into a table b-tree, invalidate any incrblob - ** cursors open on the row being replaced (assuming this is a replace - ** operation - if it is not, the following is a no-op). */ - if( pCur->pKeyInfo==0 ){ - invalidateIncrblobCursors(p, nKey, 0); - } - - /* Save the positions of any other cursors open on this table. - ** - ** In some cases, the call to btreeMoveto() below is a no-op. For - ** example, when inserting data into a table with auto-generated integer - ** keys, the VDBE layer invokes sqlite3BtreeLast() to figure out the - ** integer key to use. It then calls this function to actually insert the - ** data into the intkey B-Tree. In this case btreeMoveto() recognizes - ** that the cursor is already where it needs to be and returns without - ** doing any work. To avoid thwarting these optimizations, it is important - ** not to clear the cursor here. - */ - rc = saveAllCursors(pBt, pCur->pgnoRoot, pCur); - if( rc ) return rc; - if( !loc ){ - rc = btreeMoveto(pCur, pKey, nKey, appendBias, &loc); - if( rc ) return rc; - } - assert( pCur->eState==CURSOR_VALID || (pCur->eState==CURSOR_INVALID && loc) ); - - pPage = pCur->apPage[pCur->iPage]; - assert( pPage->intKey || nKey>=0 ); - assert( pPage->leaf || !pPage->intKey ); - - TRACE(("INSERT: table=%d nkey=%lld ndata=%d page=%d %s\n", - pCur->pgnoRoot, nKey, nData, pPage->pgno, - loc==0 ? "overwrite" : "new entry")); - assert( pPage->isInit ); - allocateTempSpace(pBt); - newCell = pBt->pTmpSpace; - if( newCell==0 ) return SQLITE_NOMEM; - rc = fillInCell(pPage, newCell, pKey, nKey, pData, nData, nZero, &szNew); - if( rc ) goto end_insert; - assert( szNew==cellSizePtr(pPage, newCell) ); - assert( szNew <= MX_CELL_SIZE(pBt) ); - idx = pCur->aiIdx[pCur->iPage]; - if( loc==0 ){ - u16 szOld; - assert( idxnCell ); - rc = sqlite3PagerWrite(pPage->pDbPage); - if( rc ){ - goto end_insert; - } - oldCell = findCell(pPage, idx); - if( !pPage->leaf ){ - memcpy(newCell, oldCell, 4); - } - szOld = cellSizePtr(pPage, oldCell); - rc = clearCell(pPage, oldCell); - dropCell(pPage, idx, szOld, &rc); - if( rc ) goto end_insert; - }else if( loc<0 && pPage->nCell>0 ){ - assert( pPage->leaf ); - idx = ++pCur->aiIdx[pCur->iPage]; - }else{ - assert( pPage->leaf ); - } - insertCell(pPage, idx, newCell, szNew, 0, 0, &rc); - assert( rc!=SQLITE_OK || pPage->nCell>0 || pPage->nOverflow>0 ); - - /* If no error has occured and pPage has an overflow cell, call balance() - ** to redistribute the cells within the tree. Since balance() may move - ** the cursor, zero the BtCursor.info.nSize and BtCursor.validNKey - ** variables. - ** - ** Previous versions of SQLite called moveToRoot() to move the cursor - ** back to the root page as balance() used to invalidate the contents - ** of BtCursor.apPage[] and BtCursor.aiIdx[]. Instead of doing that, - ** set the cursor state to "invalid". This makes common insert operations - ** slightly faster. - ** - ** There is a subtle but important optimization here too. When inserting - ** multiple records into an intkey b-tree using a single cursor (as can - ** happen while processing an "INSERT INTO ... SELECT" statement), it - ** is advantageous to leave the cursor pointing to the last entry in - ** the b-tree if possible. If the cursor is left pointing to the last - ** entry in the table, and the next row inserted has an integer key - ** larger than the largest existing key, it is possible to insert the - ** row without seeking the cursor. This can be a big performance boost. - */ - pCur->info.nSize = 0; - pCur->validNKey = 0; - if( rc==SQLITE_OK && pPage->nOverflow ){ - rc = balance(pCur); - - /* Must make sure nOverflow is reset to zero even if the balance() - ** fails. Internal data structure corruption will result otherwise. - ** Also, set the cursor state to invalid. This stops saveCursorPosition() - ** from trying to save the current position of the cursor. */ - pCur->apPage[pCur->iPage]->nOverflow = 0; - pCur->eState = CURSOR_INVALID; - } - assert( pCur->apPage[pCur->iPage]->nOverflow==0 ); - -end_insert: - return rc; -} - -/* -** Delete the entry that the cursor is pointing to. The cursor -** is left pointing at a arbitrary location. -*/ -int sqlite3BtreeDelete(BtCursor *pCur){ - Btree *p = pCur->pBtree; - BtShared *pBt = p->pBt; - int rc; /* Return code */ - MemPage *pPage; /* Page to delete cell from */ - unsigned char *pCell; /* Pointer to cell to delete */ - int iCellIdx; /* Index of cell to delete */ - int iCellDepth; /* Depth of node containing pCell */ - - assert( cursorHoldsMutex(pCur) ); - assert( pBt->inTransaction==TRANS_WRITE ); - assert( !pBt->readOnly ); - assert( pCur->wrFlag ); - assert( hasSharedCacheTableLock(p, pCur->pgnoRoot, pCur->pKeyInfo!=0, 2) ); - assert( !hasReadConflicts(p, pCur->pgnoRoot) ); - - if( NEVER(pCur->aiIdx[pCur->iPage]>=pCur->apPage[pCur->iPage]->nCell) - || NEVER(pCur->eState!=CURSOR_VALID) - ){ - return SQLITE_ERROR; /* Something has gone awry. */ - } - - /* If this is a delete operation to remove a row from a table b-tree, - ** invalidate any incrblob cursors open on the row being deleted. */ - if( pCur->pKeyInfo==0 ){ - invalidateIncrblobCursors(p, pCur->info.nKey, 0); - } - - iCellDepth = pCur->iPage; - iCellIdx = pCur->aiIdx[iCellDepth]; - pPage = pCur->apPage[iCellDepth]; - pCell = findCell(pPage, iCellIdx); - - /* If the page containing the entry to delete is not a leaf page, move - ** the cursor to the largest entry in the tree that is smaller than - ** the entry being deleted. This cell will replace the cell being deleted - ** from the internal node. The 'previous' entry is used for this instead - ** of the 'next' entry, as the previous entry is always a part of the - ** sub-tree headed by the child page of the cell being deleted. This makes - ** balancing the tree following the delete operation easier. */ - if( !pPage->leaf ){ - int notUsed; - rc = sqlite3BtreePrevious(pCur, ¬Used); - if( rc ) return rc; - } - - /* Save the positions of any other cursors open on this table before - ** making any modifications. Make the page containing the entry to be - ** deleted writable. Then free any overflow pages associated with the - ** entry and finally remove the cell itself from within the page. - */ - rc = saveAllCursors(pBt, pCur->pgnoRoot, pCur); - if( rc ) return rc; - rc = sqlite3PagerWrite(pPage->pDbPage); - if( rc ) return rc; - rc = clearCell(pPage, pCell); - dropCell(pPage, iCellIdx, cellSizePtr(pPage, pCell), &rc); - if( rc ) return rc; - - /* If the cell deleted was not located on a leaf page, then the cursor - ** is currently pointing to the largest entry in the sub-tree headed - ** by the child-page of the cell that was just deleted from an internal - ** node. The cell from the leaf node needs to be moved to the internal - ** node to replace the deleted cell. */ - if( !pPage->leaf ){ - MemPage *pLeaf = pCur->apPage[pCur->iPage]; - int nCell; - Pgno n = pCur->apPage[iCellDepth+1]->pgno; - unsigned char *pTmp; - - pCell = findCell(pLeaf, pLeaf->nCell-1); - nCell = cellSizePtr(pLeaf, pCell); - assert( MX_CELL_SIZE(pBt) >= nCell ); - - allocateTempSpace(pBt); - pTmp = pBt->pTmpSpace; - - rc = sqlite3PagerWrite(pLeaf->pDbPage); - insertCell(pPage, iCellIdx, pCell-4, nCell+4, pTmp, n, &rc); - dropCell(pLeaf, pLeaf->nCell-1, nCell, &rc); - if( rc ) return rc; - } - - /* Balance the tree. If the entry deleted was located on a leaf page, - ** then the cursor still points to that page. In this case the first - ** call to balance() repairs the tree, and the if(...) condition is - ** never true. - ** - ** Otherwise, if the entry deleted was on an internal node page, then - ** pCur is pointing to the leaf page from which a cell was removed to - ** replace the cell deleted from the internal node. This is slightly - ** tricky as the leaf node may be underfull, and the internal node may - ** be either under or overfull. In this case run the balancing algorithm - ** on the leaf node first. If the balance proceeds far enough up the - ** tree that we can be sure that any problem in the internal node has - ** been corrected, so be it. Otherwise, after balancing the leaf node, - ** walk the cursor up the tree to the internal node and balance it as - ** well. */ - rc = balance(pCur); - if( rc==SQLITE_OK && pCur->iPage>iCellDepth ){ - while( pCur->iPage>iCellDepth ){ - releasePage(pCur->apPage[pCur->iPage--]); - } - rc = balance(pCur); - } - - if( rc==SQLITE_OK ){ - moveToRoot(pCur); - } - return rc; -} - -/* -** Create a new BTree table. Write into *piTable the page -** number for the root page of the new table. -** -** The type of type is determined by the flags parameter. Only the -** following values of flags are currently in use. Other values for -** flags might not work: -** -** BTREE_INTKEY|BTREE_LEAFDATA Used for SQL tables with rowid keys -** BTREE_ZERODATA Used for SQL indices -*/ -static int btreeCreateTable(Btree *p, int *piTable, int createTabFlags){ - BtShared *pBt = p->pBt; - MemPage *pRoot; - Pgno pgnoRoot; - int rc; - int ptfFlags; /* Page-type flage for the root page of new table */ - - assert( sqlite3BtreeHoldsMutex(p) ); - assert( pBt->inTransaction==TRANS_WRITE ); - assert( !pBt->readOnly ); - -#ifdef SQLITE_OMIT_AUTOVACUUM - rc = allocateBtreePage(pBt, &pRoot, &pgnoRoot, 1, 0); - if( rc ){ - return rc; - } -#else - if( pBt->autoVacuum ){ - Pgno pgnoMove; /* Move a page here to make room for the root-page */ - MemPage *pPageMove; /* The page to move to. */ - - /* Creating a new table may probably require moving an existing database - ** to make room for the new tables root page. In case this page turns - ** out to be an overflow page, delete all overflow page-map caches - ** held by open cursors. - */ - invalidateAllOverflowCache(pBt); - - /* Read the value of meta[3] from the database to determine where the - ** root page of the new table should go. meta[3] is the largest root-page - ** created so far, so the new root-page is (meta[3]+1). - */ - sqlite3BtreeGetMeta(p, BTREE_LARGEST_ROOT_PAGE, &pgnoRoot); - pgnoRoot++; - - /* The new root-page may not be allocated on a pointer-map page, or the - ** PENDING_BYTE page. - */ - while( pgnoRoot==PTRMAP_PAGENO(pBt, pgnoRoot) || - pgnoRoot==PENDING_BYTE_PAGE(pBt) ){ - pgnoRoot++; - } - assert( pgnoRoot>=3 ); - - /* Allocate a page. The page that currently resides at pgnoRoot will - ** be moved to the allocated page (unless the allocated page happens - ** to reside at pgnoRoot). - */ - rc = allocateBtreePage(pBt, &pPageMove, &pgnoMove, pgnoRoot, 1); - if( rc!=SQLITE_OK ){ - return rc; - } - - if( pgnoMove!=pgnoRoot ){ - /* pgnoRoot is the page that will be used for the root-page of - ** the new table (assuming an error did not occur). But we were - ** allocated pgnoMove. If required (i.e. if it was not allocated - ** by extending the file), the current page at position pgnoMove - ** is already journaled. - */ - u8 eType = 0; - Pgno iPtrPage = 0; - - releasePage(pPageMove); - - /* Move the page currently at pgnoRoot to pgnoMove. */ - rc = btreeGetPage(pBt, pgnoRoot, &pRoot, 0); - if( rc!=SQLITE_OK ){ - return rc; - } - rc = ptrmapGet(pBt, pgnoRoot, &eType, &iPtrPage); - if( eType==PTRMAP_ROOTPAGE || eType==PTRMAP_FREEPAGE ){ - rc = SQLITE_CORRUPT_BKPT; - } - if( rc!=SQLITE_OK ){ - releasePage(pRoot); - return rc; - } - assert( eType!=PTRMAP_ROOTPAGE ); - assert( eType!=PTRMAP_FREEPAGE ); - rc = relocatePage(pBt, pRoot, eType, iPtrPage, pgnoMove, 0); - releasePage(pRoot); - - /* Obtain the page at pgnoRoot */ - if( rc!=SQLITE_OK ){ - return rc; - } - rc = btreeGetPage(pBt, pgnoRoot, &pRoot, 0); - if( rc!=SQLITE_OK ){ - return rc; - } - rc = sqlite3PagerWrite(pRoot->pDbPage); - if( rc!=SQLITE_OK ){ - releasePage(pRoot); - return rc; - } - }else{ - pRoot = pPageMove; - } - - /* Update the pointer-map and meta-data with the new root-page number. */ - ptrmapPut(pBt, pgnoRoot, PTRMAP_ROOTPAGE, 0, &rc); - if( rc ){ - releasePage(pRoot); - return rc; - } - - /* When the new root page was allocated, page 1 was made writable in - ** order either to increase the database filesize, or to decrement the - ** freelist count. Hence, the sqlite3BtreeUpdateMeta() call cannot fail. - */ - assert( sqlite3PagerIswriteable(pBt->pPage1->pDbPage) ); - rc = sqlite3BtreeUpdateMeta(p, 4, pgnoRoot); - if( NEVER(rc) ){ - releasePage(pRoot); - return rc; - } - - }else{ - rc = allocateBtreePage(pBt, &pRoot, &pgnoRoot, 1, 0); - if( rc ) return rc; - } -#endif - assert( sqlite3PagerIswriteable(pRoot->pDbPage) ); - if( createTabFlags & BTREE_INTKEY ){ - ptfFlags = PTF_INTKEY | PTF_LEAFDATA | PTF_LEAF; - }else{ - ptfFlags = PTF_ZERODATA | PTF_LEAF; - } - zeroPage(pRoot, ptfFlags); - sqlite3PagerUnref(pRoot->pDbPage); - assert( (pBt->openFlags & BTREE_SINGLE)==0 || pgnoRoot==2 ); - *piTable = (int)pgnoRoot; - return SQLITE_OK; -} -int sqlite3BtreeCreateTable(Btree *p, int *piTable, int flags){ - int rc; - sqlite3BtreeEnter(p); - rc = btreeCreateTable(p, piTable, flags); - sqlite3BtreeLeave(p); - return rc; -} - -/* -** Erase the given database page and all its children. Return -** the page to the freelist. -*/ -static int clearDatabasePage( - BtShared *pBt, /* The BTree that contains the table */ - Pgno pgno, /* Page number to clear */ - int freePageFlag, /* Deallocate page if true */ - int *pnChange /* Add number of Cells freed to this counter */ -){ - MemPage *pPage; - int rc; - unsigned char *pCell; - int i; - - assert( sqlite3_mutex_held(pBt->mutex) ); - if( pgno>btreePagecount(pBt) ){ - return SQLITE_CORRUPT_BKPT; - } - - rc = getAndInitPage(pBt, pgno, &pPage); - if( rc ) return rc; - for(i=0; inCell; i++){ - pCell = findCell(pPage, i); - if( !pPage->leaf ){ - rc = clearDatabasePage(pBt, get4byte(pCell), 1, pnChange); - if( rc ) goto cleardatabasepage_out; - } - rc = clearCell(pPage, pCell); - if( rc ) goto cleardatabasepage_out; - } - if( !pPage->leaf ){ - rc = clearDatabasePage(pBt, get4byte(&pPage->aData[8]), 1, pnChange); - if( rc ) goto cleardatabasepage_out; - }else if( pnChange ){ - assert( pPage->intKey ); - *pnChange += pPage->nCell; - } - if( freePageFlag ){ - freePage(pPage, &rc); - }else if( (rc = sqlite3PagerWrite(pPage->pDbPage))==0 ){ - zeroPage(pPage, pPage->aData[0] | PTF_LEAF); - } - -cleardatabasepage_out: - releasePage(pPage); - return rc; -} - -/* -** Delete all information from a single table in the database. iTable is -** the page number of the root of the table. After this routine returns, -** the root page is empty, but still exists. -** -** This routine will fail with SQLITE_LOCKED if there are any open -** read cursors on the table. Open write cursors are moved to the -** root of the table. -** -** If pnChange is not NULL, then table iTable must be an intkey table. The -** integer value pointed to by pnChange is incremented by the number of -** entries in the table. -*/ -int sqlite3BtreeClearTable(Btree *p, int iTable, int *pnChange){ - int rc; - BtShared *pBt = p->pBt; - sqlite3BtreeEnter(p); - assert( p->inTrans==TRANS_WRITE ); - - /* Invalidate all incrblob cursors open on table iTable (assuming iTable - ** is the root of a table b-tree - if it is not, the following call is - ** a no-op). */ - invalidateIncrblobCursors(p, 0, 1); - - rc = saveAllCursors(pBt, (Pgno)iTable, 0); - if( SQLITE_OK==rc ){ - rc = clearDatabasePage(pBt, (Pgno)iTable, 0, pnChange); - } - sqlite3BtreeLeave(p); - return rc; -} - -/* -** Erase all information in a table and add the root of the table to -** the freelist. Except, the root of the principle table (the one on -** page 1) is never added to the freelist. -** -** This routine will fail with SQLITE_LOCKED if there are any open -** cursors on the table. -** -** If AUTOVACUUM is enabled and the page at iTable is not the last -** root page in the database file, then the last root page -** in the database file is moved into the slot formerly occupied by -** iTable and that last slot formerly occupied by the last root page -** is added to the freelist instead of iTable. In this say, all -** root pages are kept at the beginning of the database file, which -** is necessary for AUTOVACUUM to work right. *piMoved is set to the -** page number that used to be the last root page in the file before -** the move. If no page gets moved, *piMoved is set to 0. -** The last root page is recorded in meta[3] and the value of -** meta[3] is updated by this procedure. -*/ -static int btreeDropTable(Btree *p, Pgno iTable, int *piMoved){ - int rc; - MemPage *pPage = 0; - BtShared *pBt = p->pBt; - - assert( sqlite3BtreeHoldsMutex(p) ); - assert( p->inTrans==TRANS_WRITE ); - - /* It is illegal to drop a table if any cursors are open on the - ** database. This is because in auto-vacuum mode the backend may - ** need to move another root-page to fill a gap left by the deleted - ** root page. If an open cursor was using this page a problem would - ** occur. - ** - ** This error is caught long before control reaches this point. - */ - if( NEVER(pBt->pCursor) ){ - sqlite3ConnectionBlocked(p->db, pBt->pCursor->pBtree->db); - return SQLITE_LOCKED_SHAREDCACHE; - } - - rc = btreeGetPage(pBt, (Pgno)iTable, &pPage, 0); - if( rc ) return rc; - rc = sqlite3BtreeClearTable(p, iTable, 0); - if( rc ){ - releasePage(pPage); - return rc; - } - - *piMoved = 0; - - if( iTable>1 ){ -#ifdef SQLITE_OMIT_AUTOVACUUM - freePage(pPage, &rc); - releasePage(pPage); -#else - if( pBt->autoVacuum ){ - Pgno maxRootPgno; - sqlite3BtreeGetMeta(p, BTREE_LARGEST_ROOT_PAGE, &maxRootPgno); - - if( iTable==maxRootPgno ){ - /* If the table being dropped is the table with the largest root-page - ** number in the database, put the root page on the free list. - */ - freePage(pPage, &rc); - releasePage(pPage); - if( rc!=SQLITE_OK ){ - return rc; - } - }else{ - /* The table being dropped does not have the largest root-page - ** number in the database. So move the page that does into the - ** gap left by the deleted root-page. - */ - MemPage *pMove; - releasePage(pPage); - rc = btreeGetPage(pBt, maxRootPgno, &pMove, 0); - if( rc!=SQLITE_OK ){ - return rc; - } - rc = relocatePage(pBt, pMove, PTRMAP_ROOTPAGE, 0, iTable, 0); - releasePage(pMove); - if( rc!=SQLITE_OK ){ - return rc; - } - pMove = 0; - rc = btreeGetPage(pBt, maxRootPgno, &pMove, 0); - freePage(pMove, &rc); - releasePage(pMove); - if( rc!=SQLITE_OK ){ - return rc; - } - *piMoved = maxRootPgno; - } - - /* Set the new 'max-root-page' value in the database header. This - ** is the old value less one, less one more if that happens to - ** be a root-page number, less one again if that is the - ** PENDING_BYTE_PAGE. - */ - maxRootPgno--; - while( maxRootPgno==PENDING_BYTE_PAGE(pBt) - || PTRMAP_ISPAGE(pBt, maxRootPgno) ){ - maxRootPgno--; - } - assert( maxRootPgno!=PENDING_BYTE_PAGE(pBt) ); - - rc = sqlite3BtreeUpdateMeta(p, 4, maxRootPgno); - }else{ - freePage(pPage, &rc); - releasePage(pPage); - } -#endif - }else{ - /* If sqlite3BtreeDropTable was called on page 1. - ** This really never should happen except in a corrupt - ** database. - */ - zeroPage(pPage, PTF_INTKEY|PTF_LEAF ); - releasePage(pPage); - } - return rc; -} -int sqlite3BtreeDropTable(Btree *p, int iTable, int *piMoved){ - int rc; - sqlite3BtreeEnter(p); - rc = btreeDropTable(p, iTable, piMoved); - sqlite3BtreeLeave(p); - return rc; -} - - -/* -** This function may only be called if the b-tree connection already -** has a read or write transaction open on the database. -** -** Read the meta-information out of a database file. Meta[0] -** is the number of free pages currently in the database. Meta[1] -** through meta[15] are available for use by higher layers. Meta[0] -** is read-only, the others are read/write. -** -** The schema layer numbers meta values differently. At the schema -** layer (and the SetCookie and ReadCookie opcodes) the number of -** free pages is not visible. So Cookie[0] is the same as Meta[1]. -*/ -void sqlite3BtreeGetMeta(Btree *p, int idx, u32 *pMeta){ - BtShared *pBt = p->pBt; - - sqlite3BtreeEnter(p); - assert( p->inTrans>TRANS_NONE ); - assert( SQLITE_OK==querySharedCacheTableLock(p, MASTER_ROOT, READ_LOCK) ); - assert( pBt->pPage1 ); - assert( idx>=0 && idx<=15 ); - - *pMeta = get4byte(&pBt->pPage1->aData[36 + idx*4]); - - /* If auto-vacuum is disabled in this build and this is an auto-vacuum - ** database, mark the database as read-only. */ -#ifdef SQLITE_OMIT_AUTOVACUUM - if( idx==BTREE_LARGEST_ROOT_PAGE && *pMeta>0 ) pBt->readOnly = 1; -#endif - - sqlite3BtreeLeave(p); -} - -/* -** Write meta-information back into the database. Meta[0] is -** read-only and may not be written. -*/ -int sqlite3BtreeUpdateMeta(Btree *p, int idx, u32 iMeta){ - BtShared *pBt = p->pBt; - unsigned char *pP1; - int rc; - assert( idx>=1 && idx<=15 ); - sqlite3BtreeEnter(p); - assert( p->inTrans==TRANS_WRITE ); - assert( pBt->pPage1!=0 ); - pP1 = pBt->pPage1->aData; - rc = sqlite3PagerWrite(pBt->pPage1->pDbPage); - if( rc==SQLITE_OK ){ - put4byte(&pP1[36 + idx*4], iMeta); -#ifndef SQLITE_OMIT_AUTOVACUUM - if( idx==BTREE_INCR_VACUUM ){ - assert( pBt->autoVacuum || iMeta==0 ); - assert( iMeta==0 || iMeta==1 ); - pBt->incrVacuum = (u8)iMeta; - } -#endif - } - sqlite3BtreeLeave(p); - return rc; -} - -#ifndef SQLITE_OMIT_BTREECOUNT -/* -** The first argument, pCur, is a cursor opened on some b-tree. Count the -** number of entries in the b-tree and write the result to *pnEntry. -** -** SQLITE_OK is returned if the operation is successfully executed. -** Otherwise, if an error is encountered (i.e. an IO error or database -** corruption) an SQLite error code is returned. -*/ -int sqlite3BtreeCount(BtCursor *pCur, i64 *pnEntry){ - i64 nEntry = 0; /* Value to return in *pnEntry */ - int rc; /* Return code */ - - if( pCur->pgnoRoot==0 ){ - *pnEntry = 0; - return SQLITE_OK; - } - rc = moveToRoot(pCur); - - /* Unless an error occurs, the following loop runs one iteration for each - ** page in the B-Tree structure (not including overflow pages). - */ - while( rc==SQLITE_OK ){ - int iIdx; /* Index of child node in parent */ - MemPage *pPage; /* Current page of the b-tree */ - - /* If this is a leaf page or the tree is not an int-key tree, then - ** this page contains countable entries. Increment the entry counter - ** accordingly. - */ - pPage = pCur->apPage[pCur->iPage]; - if( pPage->leaf || !pPage->intKey ){ - nEntry += pPage->nCell; - } - - /* pPage is a leaf node. This loop navigates the cursor so that it - ** points to the first interior cell that it points to the parent of - ** the next page in the tree that has not yet been visited. The - ** pCur->aiIdx[pCur->iPage] value is set to the index of the parent cell - ** of the page, or to the number of cells in the page if the next page - ** to visit is the right-child of its parent. - ** - ** If all pages in the tree have been visited, return SQLITE_OK to the - ** caller. - */ - if( pPage->leaf ){ - do { - if( pCur->iPage==0 ){ - /* All pages of the b-tree have been visited. Return successfully. */ - *pnEntry = nEntry; - return SQLITE_OK; - } - moveToParent(pCur); - }while ( pCur->aiIdx[pCur->iPage]>=pCur->apPage[pCur->iPage]->nCell ); - - pCur->aiIdx[pCur->iPage]++; - pPage = pCur->apPage[pCur->iPage]; - } - - /* Descend to the child node of the cell that the cursor currently - ** points at. This is the right-child if (iIdx==pPage->nCell). - */ - iIdx = pCur->aiIdx[pCur->iPage]; - if( iIdx==pPage->nCell ){ - rc = moveToChild(pCur, get4byte(&pPage->aData[pPage->hdrOffset+8])); - }else{ - rc = moveToChild(pCur, get4byte(findCell(pPage, iIdx))); - } - } - - /* An error has occurred. Return an error code. */ - return rc; -} -#endif - -/* -** Return the pager associated with a BTree. This routine is used for -** testing and debugging only. -*/ -Pager *sqlite3BtreePager(Btree *p){ - return p->pBt->pPager; -} - -#ifndef SQLITE_OMIT_INTEGRITY_CHECK -/* -** Append a message to the error message string. -*/ -static void checkAppendMsg( - IntegrityCk *pCheck, - char *zMsg1, - const char *zFormat, - ... -){ - va_list ap; - if( !pCheck->mxErr ) return; - pCheck->mxErr--; - pCheck->nErr++; - va_start(ap, zFormat); - if( pCheck->errMsg.nChar ){ - sqlite3StrAccumAppend(&pCheck->errMsg, "\n", 1); - } - if( zMsg1 ){ - sqlite3StrAccumAppend(&pCheck->errMsg, zMsg1, -1); - } - sqlite3VXPrintf(&pCheck->errMsg, 1, zFormat, ap); - va_end(ap); - if( pCheck->errMsg.mallocFailed ){ - pCheck->mallocFailed = 1; - } -} -#endif /* SQLITE_OMIT_INTEGRITY_CHECK */ - -#ifndef SQLITE_OMIT_INTEGRITY_CHECK -/* -** Add 1 to the reference count for page iPage. If this is the second -** reference to the page, add an error message to pCheck->zErrMsg. -** Return 1 if there are 2 ore more references to the page and 0 if -** if this is the first reference to the page. -** -** Also check that the page number is in bounds. -*/ -static int checkRef(IntegrityCk *pCheck, Pgno iPage, char *zContext){ - if( iPage==0 ) return 1; - if( iPage>pCheck->nPage ){ - checkAppendMsg(pCheck, zContext, "invalid page number %d", iPage); - return 1; - } - if( pCheck->anRef[iPage]==1 ){ - checkAppendMsg(pCheck, zContext, "2nd reference to page %d", iPage); - return 1; - } - return (pCheck->anRef[iPage]++)>1; -} - -#ifndef SQLITE_OMIT_AUTOVACUUM -/* -** Check that the entry in the pointer-map for page iChild maps to -** page iParent, pointer type ptrType. If not, append an error message -** to pCheck. -*/ -static void checkPtrmap( - IntegrityCk *pCheck, /* Integrity check context */ - Pgno iChild, /* Child page number */ - u8 eType, /* Expected pointer map type */ - Pgno iParent, /* Expected pointer map parent page number */ - char *zContext /* Context description (used for error msg) */ -){ - int rc; - u8 ePtrmapType; - Pgno iPtrmapParent; - - rc = ptrmapGet(pCheck->pBt, iChild, &ePtrmapType, &iPtrmapParent); - if( rc!=SQLITE_OK ){ - if( rc==SQLITE_NOMEM || rc==SQLITE_IOERR_NOMEM ) pCheck->mallocFailed = 1; - checkAppendMsg(pCheck, zContext, "Failed to read ptrmap key=%d", iChild); - return; - } - - if( ePtrmapType!=eType || iPtrmapParent!=iParent ){ - checkAppendMsg(pCheck, zContext, - "Bad ptr map entry key=%d expected=(%d,%d) got=(%d,%d)", - iChild, eType, iParent, ePtrmapType, iPtrmapParent); - } -} -#endif - -/* -** Check the integrity of the freelist or of an overflow page list. -** Verify that the number of pages on the list is N. -*/ -static void checkList( - IntegrityCk *pCheck, /* Integrity checking context */ - int isFreeList, /* True for a freelist. False for overflow page list */ - int iPage, /* Page number for first page in the list */ - int N, /* Expected number of pages in the list */ - char *zContext /* Context for error messages */ -){ - int i; - int expected = N; - int iFirst = iPage; - while( N-- > 0 && pCheck->mxErr ){ - DbPage *pOvflPage; - unsigned char *pOvflData; - if( iPage<1 ){ - checkAppendMsg(pCheck, zContext, - "%d of %d pages missing from overflow list starting at %d", - N+1, expected, iFirst); - break; - } - if( checkRef(pCheck, iPage, zContext) ) break; - if( sqlite3PagerGet(pCheck->pPager, (Pgno)iPage, &pOvflPage) ){ - checkAppendMsg(pCheck, zContext, "failed to get page %d", iPage); - break; - } - pOvflData = (unsigned char *)sqlite3PagerGetData(pOvflPage); - if( isFreeList ){ - int n = get4byte(&pOvflData[4]); -#ifndef SQLITE_OMIT_AUTOVACUUM - if( pCheck->pBt->autoVacuum ){ - checkPtrmap(pCheck, iPage, PTRMAP_FREEPAGE, 0, zContext); - } -#endif - if( n>(int)pCheck->pBt->usableSize/4-2 ){ - checkAppendMsg(pCheck, zContext, - "freelist leaf count too big on page %d", iPage); - N--; - }else{ - for(i=0; ipBt->autoVacuum ){ - checkPtrmap(pCheck, iFreePage, PTRMAP_FREEPAGE, 0, zContext); - } -#endif - checkRef(pCheck, iFreePage, zContext); - } - N -= n; - } - } -#ifndef SQLITE_OMIT_AUTOVACUUM - else{ - /* If this database supports auto-vacuum and iPage is not the last - ** page in this overflow list, check that the pointer-map entry for - ** the following page matches iPage. - */ - if( pCheck->pBt->autoVacuum && N>0 ){ - i = get4byte(pOvflData); - checkPtrmap(pCheck, i, PTRMAP_OVERFLOW2, iPage, zContext); - } - } -#endif - iPage = get4byte(pOvflData); - sqlite3PagerUnref(pOvflPage); - } -} -#endif /* SQLITE_OMIT_INTEGRITY_CHECK */ - -#ifndef SQLITE_OMIT_INTEGRITY_CHECK -/* -** Do various sanity checks on a single page of a tree. Return -** the tree depth. Root pages return 0. Parents of root pages -** return 1, and so forth. -** -** These checks are done: -** -** 1. Make sure that cells and freeblocks do not overlap -** but combine to completely cover the page. -** NO 2. Make sure cell keys are in order. -** NO 3. Make sure no key is less than or equal to zLowerBound. -** NO 4. Make sure no key is greater than or equal to zUpperBound. -** 5. Check the integrity of overflow pages. -** 6. Recursively call checkTreePage on all children. -** 7. Verify that the depth of all children is the same. -** 8. Make sure this page is at least 33% full or else it is -** the root of the tree. -*/ -static int checkTreePage( - IntegrityCk *pCheck, /* Context for the sanity check */ - int iPage, /* Page number of the page to check */ - char *zParentContext, /* Parent context */ - i64 *pnParentMinKey, - i64 *pnParentMaxKey -){ - MemPage *pPage; - int i, rc, depth, d2, pgno, cnt; - int hdr, cellStart; - int nCell; - u8 *data; - BtShared *pBt; - int usableSize; - char zContext[100]; - char *hit = 0; - i64 nMinKey = 0; - i64 nMaxKey = 0; - - sqlite3_snprintf(sizeof(zContext), zContext, "Page %d: ", iPage); - - /* Check that the page exists - */ - pBt = pCheck->pBt; - usableSize = pBt->usableSize; - if( iPage==0 ) return 0; - if( checkRef(pCheck, iPage, zParentContext) ) return 0; - if( (rc = btreeGetPage(pBt, (Pgno)iPage, &pPage, 0))!=0 ){ - checkAppendMsg(pCheck, zContext, - "unable to get the page. error code=%d", rc); - return 0; - } - - /* Clear MemPage.isInit to make sure the corruption detection code in - ** btreeInitPage() is executed. */ - pPage->isInit = 0; - if( (rc = btreeInitPage(pPage))!=0 ){ - assert( rc==SQLITE_CORRUPT ); /* The only possible error from InitPage */ - checkAppendMsg(pCheck, zContext, - "btreeInitPage() returns error code %d", rc); - releasePage(pPage); - return 0; - } - - /* Check out all the cells. - */ - depth = 0; - for(i=0; inCell && pCheck->mxErr; i++){ - u8 *pCell; - u32 sz; - CellInfo info; - - /* Check payload overflow pages - */ - sqlite3_snprintf(sizeof(zContext), zContext, - "On tree page %d cell %d: ", iPage, i); - pCell = findCell(pPage,i); - btreeParseCellPtr(pPage, pCell, &info); - sz = info.nData; - if( !pPage->intKey ) sz += (int)info.nKey; - /* For intKey pages, check that the keys are in order. - */ - else if( i==0 ) nMinKey = nMaxKey = info.nKey; - else{ - if( info.nKey <= nMaxKey ){ - checkAppendMsg(pCheck, zContext, - "Rowid %lld out of order (previous was %lld)", info.nKey, nMaxKey); - } - nMaxKey = info.nKey; - } - assert( sz==info.nPayload ); - if( (sz>info.nLocal) - && (&pCell[info.iOverflow]<=&pPage->aData[pBt->usableSize]) - ){ - int nPage = (sz - info.nLocal + usableSize - 5)/(usableSize - 4); - Pgno pgnoOvfl = get4byte(&pCell[info.iOverflow]); -#ifndef SQLITE_OMIT_AUTOVACUUM - if( pBt->autoVacuum ){ - checkPtrmap(pCheck, pgnoOvfl, PTRMAP_OVERFLOW1, iPage, zContext); - } -#endif - checkList(pCheck, 0, pgnoOvfl, nPage, zContext); - } - - /* Check sanity of left child page. - */ - if( !pPage->leaf ){ - pgno = get4byte(pCell); -#ifndef SQLITE_OMIT_AUTOVACUUM - if( pBt->autoVacuum ){ - checkPtrmap(pCheck, pgno, PTRMAP_BTREE, iPage, zContext); - } -#endif - d2 = checkTreePage(pCheck, pgno, zContext, &nMinKey, i==0 ? NULL : &nMaxKey); - if( i>0 && d2!=depth ){ - checkAppendMsg(pCheck, zContext, "Child page depth differs"); - } - depth = d2; - } - } - - if( !pPage->leaf ){ - pgno = get4byte(&pPage->aData[pPage->hdrOffset+8]); - sqlite3_snprintf(sizeof(zContext), zContext, - "On page %d at right child: ", iPage); -#ifndef SQLITE_OMIT_AUTOVACUUM - if( pBt->autoVacuum ){ - checkPtrmap(pCheck, pgno, PTRMAP_BTREE, iPage, zContext); - } -#endif - checkTreePage(pCheck, pgno, zContext, NULL, !pPage->nCell ? NULL : &nMaxKey); - } - - /* For intKey leaf pages, check that the min/max keys are in order - ** with any left/parent/right pages. - */ - if( pPage->leaf && pPage->intKey ){ - /* if we are a left child page */ - if( pnParentMinKey ){ - /* if we are the left most child page */ - if( !pnParentMaxKey ){ - if( nMaxKey > *pnParentMinKey ){ - checkAppendMsg(pCheck, zContext, - "Rowid %lld out of order (max larger than parent min of %lld)", - nMaxKey, *pnParentMinKey); - } - }else{ - if( nMinKey <= *pnParentMinKey ){ - checkAppendMsg(pCheck, zContext, - "Rowid %lld out of order (min less than parent min of %lld)", - nMinKey, *pnParentMinKey); - } - if( nMaxKey > *pnParentMaxKey ){ - checkAppendMsg(pCheck, zContext, - "Rowid %lld out of order (max larger than parent max of %lld)", - nMaxKey, *pnParentMaxKey); - } - *pnParentMinKey = nMaxKey; - } - /* else if we're a right child page */ - } else if( pnParentMaxKey ){ - if( nMinKey <= *pnParentMaxKey ){ - checkAppendMsg(pCheck, zContext, - "Rowid %lld out of order (min less than parent max of %lld)", - nMinKey, *pnParentMaxKey); - } - } - } - - /* Check for complete coverage of the page - */ - data = pPage->aData; - hdr = pPage->hdrOffset; - hit = sqlite3PageMalloc( pBt->pageSize ); - if( hit==0 ){ - pCheck->mallocFailed = 1; - }else{ - int contentOffset = get2byteNotZero(&data[hdr+5]); - assert( contentOffset<=usableSize ); /* Enforced by btreeInitPage() */ - memset(hit+contentOffset, 0, usableSize-contentOffset); - memset(hit, 1, contentOffset); - nCell = get2byte(&data[hdr+3]); - cellStart = hdr + 12 - 4*pPage->leaf; - for(i=0; i=usableSize ){ - checkAppendMsg(pCheck, 0, - "Corruption detected in cell %d on page %d",i,iPage); - }else{ - for(j=pc+size-1; j>=pc; j--) hit[j]++; - } - } - i = get2byte(&data[hdr+1]); - while( i>0 ){ - int size, j; - assert( i<=usableSize-4 ); /* Enforced by btreeInitPage() */ - size = get2byte(&data[i+2]); - assert( i+size<=usableSize ); /* Enforced by btreeInitPage() */ - for(j=i+size-1; j>=i; j--) hit[j]++; - j = get2byte(&data[i]); - assert( j==0 || j>i+size ); /* Enforced by btreeInitPage() */ - assert( j<=usableSize-4 ); /* Enforced by btreeInitPage() */ - i = j; - } - for(i=cnt=0; i1 ){ - checkAppendMsg(pCheck, 0, - "Multiple uses for byte %d of page %d", i, iPage); - break; - } - } - if( cnt!=data[hdr+7] ){ - checkAppendMsg(pCheck, 0, - "Fragmentation of %d bytes reported as %d on page %d", - cnt, data[hdr+7], iPage); - } - } - sqlite3PageFree(hit); - releasePage(pPage); - return depth+1; -} -#endif /* SQLITE_OMIT_INTEGRITY_CHECK */ - -#ifndef SQLITE_OMIT_INTEGRITY_CHECK -/* -** This routine does a complete check of the given BTree file. aRoot[] is -** an array of pages numbers were each page number is the root page of -** a table. nRoot is the number of entries in aRoot. -** -** A read-only or read-write transaction must be opened before calling -** this function. -** -** Write the number of error seen in *pnErr. Except for some memory -** allocation errors, an error message held in memory obtained from -** malloc is returned if *pnErr is non-zero. If *pnErr==0 then NULL is -** returned. If a memory allocation error occurs, NULL is returned. -*/ -char *sqlite3BtreeIntegrityCheck( - Btree *p, /* The btree to be checked */ - int *aRoot, /* An array of root pages numbers for individual trees */ - int nRoot, /* Number of entries in aRoot[] */ - int mxErr, /* Stop reporting errors after this many */ - int *pnErr /* Write number of errors seen to this variable */ -){ - Pgno i; - int nRef; - IntegrityCk sCheck; - BtShared *pBt = p->pBt; - char zErr[100]; - - sqlite3BtreeEnter(p); - assert( p->inTrans>TRANS_NONE && pBt->inTransaction>TRANS_NONE ); - nRef = sqlite3PagerRefcount(pBt->pPager); - sCheck.pBt = pBt; - sCheck.pPager = pBt->pPager; - sCheck.nPage = btreePagecount(sCheck.pBt); - sCheck.mxErr = mxErr; - sCheck.nErr = 0; - sCheck.mallocFailed = 0; - *pnErr = 0; - if( sCheck.nPage==0 ){ - sqlite3BtreeLeave(p); - return 0; - } - sCheck.anRef = sqlite3Malloc( (sCheck.nPage+1)*sizeof(sCheck.anRef[0]) ); - if( !sCheck.anRef ){ - *pnErr = 1; - sqlite3BtreeLeave(p); - return 0; - } - for(i=0; i<=sCheck.nPage; i++){ sCheck.anRef[i] = 0; } - i = PENDING_BYTE_PAGE(pBt); - if( i<=sCheck.nPage ){ - sCheck.anRef[i] = 1; - } - sqlite3StrAccumInit(&sCheck.errMsg, zErr, sizeof(zErr), 20000); - sCheck.errMsg.useMalloc = 2; - - /* Check the integrity of the freelist - */ - checkList(&sCheck, 1, get4byte(&pBt->pPage1->aData[32]), - get4byte(&pBt->pPage1->aData[36]), "Main freelist: "); - - /* Check all the tables. - */ - for(i=0; (int)iautoVacuum && aRoot[i]>1 ){ - checkPtrmap(&sCheck, aRoot[i], PTRMAP_ROOTPAGE, 0, 0); - } -#endif - checkTreePage(&sCheck, aRoot[i], "List of tree roots: ", NULL, NULL); - } - - /* Make sure every page in the file is referenced - */ - for(i=1; i<=sCheck.nPage && sCheck.mxErr; i++){ -#ifdef SQLITE_OMIT_AUTOVACUUM - if( sCheck.anRef[i]==0 ){ - checkAppendMsg(&sCheck, 0, "Page %d is never used", i); - } -#else - /* If the database supports auto-vacuum, make sure no tables contain - ** references to pointer-map pages. - */ - if( sCheck.anRef[i]==0 && - (PTRMAP_PAGENO(pBt, i)!=i || !pBt->autoVacuum) ){ - checkAppendMsg(&sCheck, 0, "Page %d is never used", i); - } - if( sCheck.anRef[i]!=0 && - (PTRMAP_PAGENO(pBt, i)==i && pBt->autoVacuum) ){ - checkAppendMsg(&sCheck, 0, "Pointer map page %d is referenced", i); - } -#endif - } - - /* Make sure this analysis did not leave any unref() pages. - ** This is an internal consistency check; an integrity check - ** of the integrity check. - */ - if( NEVER(nRef != sqlite3PagerRefcount(pBt->pPager)) ){ - checkAppendMsg(&sCheck, 0, - "Outstanding page count goes from %d to %d during this analysis", - nRef, sqlite3PagerRefcount(pBt->pPager) - ); - } - - /* Clean up and report errors. - */ - sqlite3BtreeLeave(p); - sqlite3_free(sCheck.anRef); - if( sCheck.mallocFailed ){ - sqlite3StrAccumReset(&sCheck.errMsg); - *pnErr = sCheck.nErr+1; - return 0; - } - *pnErr = sCheck.nErr; - if( sCheck.nErr==0 ) sqlite3StrAccumReset(&sCheck.errMsg); - return sqlite3StrAccumFinish(&sCheck.errMsg); -} -#endif /* SQLITE_OMIT_INTEGRITY_CHECK */ - -/* -** Return the full pathname of the underlying database file. -** -** The pager filename is invariant as long as the pager is -** open so it is safe to access without the BtShared mutex. -*/ -const char *sqlite3BtreeGetFilename(Btree *p){ - assert( p->pBt->pPager!=0 ); - return sqlite3PagerFilename(p->pBt->pPager); -} - -/* -** Return the pathname of the journal file for this database. The return -** value of this routine is the same regardless of whether the journal file -** has been created or not. -** -** The pager journal filename is invariant as long as the pager is -** open so it is safe to access without the BtShared mutex. -*/ -const char *sqlite3BtreeGetJournalname(Btree *p){ - assert( p->pBt->pPager!=0 ); - return sqlite3PagerJournalname(p->pBt->pPager); -} - -/* -** Return non-zero if a transaction is active. -*/ -int sqlite3BtreeIsInTrans(Btree *p){ - assert( p==0 || sqlite3_mutex_held(p->db->mutex) ); - return (p && (p->inTrans==TRANS_WRITE)); -} - -#ifndef SQLITE_OMIT_WAL -/* -** Run a checkpoint on the Btree passed as the first argument. -** -** Return SQLITE_LOCKED if this or any other connection has an open -** transaction on the shared-cache the argument Btree is connected to. -** -** Parameter eMode is one of SQLITE_CHECKPOINT_PASSIVE, FULL or RESTART. -*/ -int sqlite3BtreeCheckpoint(Btree *p, int eMode, int *pnLog, int *pnCkpt){ - int rc = SQLITE_OK; - if( p ){ - BtShared *pBt = p->pBt; - sqlite3BtreeEnter(p); - if( pBt->inTransaction!=TRANS_NONE ){ - rc = SQLITE_LOCKED; - }else{ - rc = sqlite3PagerCheckpoint(pBt->pPager, eMode, pnLog, pnCkpt); - } - sqlite3BtreeLeave(p); - } - return rc; -} -#endif - -/* -** Return non-zero if a read (or write) transaction is active. -*/ -int sqlite3BtreeIsInReadTrans(Btree *p){ - assert( p ); - assert( sqlite3_mutex_held(p->db->mutex) ); - return p->inTrans!=TRANS_NONE; -} - -int sqlite3BtreeIsInBackup(Btree *p){ - assert( p ); - assert( sqlite3_mutex_held(p->db->mutex) ); - return p->nBackup!=0; -} - -/* -** This function returns a pointer to a blob of memory associated with -** a single shared-btree. The memory is used by client code for its own -** purposes (for example, to store a high-level schema associated with -** the shared-btree). The btree layer manages reference counting issues. -** -** The first time this is called on a shared-btree, nBytes bytes of memory -** are allocated, zeroed, and returned to the caller. For each subsequent -** call the nBytes parameter is ignored and a pointer to the same blob -** of memory returned. -** -** If the nBytes parameter is 0 and the blob of memory has not yet been -** allocated, a null pointer is returned. If the blob has already been -** allocated, it is returned as normal. -** -** Just before the shared-btree is closed, the function passed as the -** xFree argument when the memory allocation was made is invoked on the -** blob of allocated memory. The xFree function should not call sqlite3_free() -** on the memory, the btree layer does that. -*/ -void *sqlite3BtreeSchema(Btree *p, int nBytes, void(*xFree)(void *)){ - BtShared *pBt = p->pBt; - sqlite3BtreeEnter(p); - if( !pBt->pSchema && nBytes ){ - pBt->pSchema = sqlite3DbMallocZero(0, nBytes); - pBt->xFreeSchema = xFree; - } - sqlite3BtreeLeave(p); - return pBt->pSchema; -} - -/* -** Return SQLITE_LOCKED_SHAREDCACHE if another user of the same shared -** btree as the argument handle holds an exclusive lock on the -** sqlite_master table. Otherwise SQLITE_OK. -*/ -int sqlite3BtreeSchemaLocked(Btree *p){ - int rc; - assert( sqlite3_mutex_held(p->db->mutex) ); - sqlite3BtreeEnter(p); - rc = querySharedCacheTableLock(p, MASTER_ROOT, READ_LOCK); - assert( rc==SQLITE_OK || rc==SQLITE_LOCKED_SHAREDCACHE ); - sqlite3BtreeLeave(p); - return rc; -} - - -#ifndef SQLITE_OMIT_SHARED_CACHE -/* -** Obtain a lock on the table whose root page is iTab. The -** lock is a write lock if isWritelock is true or a read lock -** if it is false. -*/ -int sqlite3BtreeLockTable(Btree *p, int iTab, u8 isWriteLock){ - int rc = SQLITE_OK; - assert( p->inTrans!=TRANS_NONE ); - if( p->sharable ){ - u8 lockType = READ_LOCK + isWriteLock; - assert( READ_LOCK+1==WRITE_LOCK ); - assert( isWriteLock==0 || isWriteLock==1 ); - - sqlite3BtreeEnter(p); - rc = querySharedCacheTableLock(p, iTab, lockType); - if( rc==SQLITE_OK ){ - rc = setSharedCacheTableLock(p, iTab, lockType); - } - sqlite3BtreeLeave(p); - } - return rc; -} -#endif - -#ifndef SQLITE_OMIT_INCRBLOB -/* -** Argument pCsr must be a cursor opened for writing on an -** INTKEY table currently pointing at a valid table entry. -** This function modifies the data stored as part of that entry. -** -** Only the data content may only be modified, it is not possible to -** change the length of the data stored. If this function is called with -** parameters that attempt to write past the end of the existing data, -** no modifications are made and SQLITE_CORRUPT is returned. -*/ -int sqlite3BtreePutData(BtCursor *pCsr, u32 offset, u32 amt, void *z){ - int rc; - assert( cursorHoldsMutex(pCsr) ); - assert( sqlite3_mutex_held(pCsr->pBtree->db->mutex) ); - assert( pCsr->isIncrblobHandle ); - - rc = restoreCursorPosition(pCsr); - if( rc!=SQLITE_OK ){ - return rc; - } - assert( pCsr->eState!=CURSOR_REQUIRESEEK ); - if( pCsr->eState!=CURSOR_VALID ){ - return SQLITE_ABORT; - } - - /* Check some assumptions: - ** (a) the cursor is open for writing, - ** (b) there is a read/write transaction open, - ** (c) the connection holds a write-lock on the table (if required), - ** (d) there are no conflicting read-locks, and - ** (e) the cursor points at a valid row of an intKey table. - */ - if( !pCsr->wrFlag ){ - return SQLITE_READONLY; - } - assert( !pCsr->pBt->readOnly && pCsr->pBt->inTransaction==TRANS_WRITE ); - assert( hasSharedCacheTableLock(pCsr->pBtree, pCsr->pgnoRoot, 0, 2) ); - assert( !hasReadConflicts(pCsr->pBtree, pCsr->pgnoRoot) ); - assert( pCsr->apPage[pCsr->iPage]->intKey ); - - return accessPayload(pCsr, offset, amt, (unsigned char *)z, 1); -} - -/* -** Set a flag on this cursor to cache the locations of pages from the -** overflow list for the current row. This is used by cursors opened -** for incremental blob IO only. -** -** This function sets a flag only. The actual page location cache -** (stored in BtCursor.aOverflow[]) is allocated and used by function -** accessPayload() (the worker function for sqlite3BtreeData() and -** sqlite3BtreePutData()). -*/ -void sqlite3BtreeCacheOverflow(BtCursor *pCur){ - assert( cursorHoldsMutex(pCur) ); - assert( sqlite3_mutex_held(pCur->pBtree->db->mutex) ); - invalidateOverflowCache(pCur); - pCur->isIncrblobHandle = 1; -} -#endif - -/* -** Set both the "read version" (single byte at byte offset 18) and -** "write version" (single byte at byte offset 19) fields in the database -** header to iVersion. -*/ -int sqlite3BtreeSetVersion(Btree *pBtree, int iVersion){ - BtShared *pBt = pBtree->pBt; - int rc; /* Return code */ - - assert( iVersion==1 || iVersion==2 ); - - /* If setting the version fields to 1, do not automatically open the - ** WAL connection, even if the version fields are currently set to 2. - */ - pBt->doNotUseWAL = (u8)(iVersion==1); - - rc = sqlite3BtreeBeginTrans(pBtree, 0); - if( rc==SQLITE_OK ){ - u8 *aData = pBt->pPage1->aData; - if( aData[18]!=(u8)iVersion || aData[19]!=(u8)iVersion ){ - rc = sqlite3BtreeBeginTrans(pBtree, 2); - if( rc==SQLITE_OK ){ - rc = sqlite3PagerWrite(pBt->pPage1->pDbPage); - if( rc==SQLITE_OK ){ - aData[18] = (u8)iVersion; - aData[19] = (u8)iVersion; - } - } - } - } - - pBt->doNotUseWAL = 0; - return rc; -} diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/btree.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/btree.h deleted file mode 100644 index 0ba8581197..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/btree.h +++ /dev/null @@ -1,241 +0,0 @@ -/* -** 2001 September 15 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This header file defines the interface that the sqlite B-Tree file -** subsystem. See comments in the source code for a detailed description -** of what each interface routine does. -*/ -#ifndef _BTREE_H_ -#define _BTREE_H_ - -/* TODO: This definition is just included so other modules compile. It -** needs to be revisited. -*/ -#define SQLITE_N_BTREE_META 10 - -/* -** If defined as non-zero, auto-vacuum is enabled by default. Otherwise -** it must be turned on for each database using "PRAGMA auto_vacuum = 1". -*/ -#ifndef SQLITE_DEFAULT_AUTOVACUUM - #define SQLITE_DEFAULT_AUTOVACUUM 0 -#endif - -#define BTREE_AUTOVACUUM_NONE 0 /* Do not do auto-vacuum */ -#define BTREE_AUTOVACUUM_FULL 1 /* Do full auto-vacuum */ -#define BTREE_AUTOVACUUM_INCR 2 /* Incremental vacuum */ - -/* -** Forward declarations of structure -*/ -typedef struct Btree Btree; -typedef struct BtCursor BtCursor; -typedef struct BtShared BtShared; - - -int sqlite3BtreeOpen( - sqlite3_vfs *pVfs, /* VFS to use with this b-tree */ - const char *zFilename, /* Name of database file to open */ - sqlite3 *db, /* Associated database connection */ - Btree **ppBtree, /* Return open Btree* here */ - int flags, /* Flags */ - int vfsFlags /* Flags passed through to VFS open */ -); - -/* The flags parameter to sqlite3BtreeOpen can be the bitwise or of the -** following values. -** -** NOTE: These values must match the corresponding PAGER_ values in -** pager.h. -*/ -#define BTREE_OMIT_JOURNAL 1 /* Do not create or use a rollback journal */ -#define BTREE_NO_READLOCK 2 /* Omit readlocks on readonly files */ -#define BTREE_MEMORY 4 /* This is an in-memory DB */ -#define BTREE_SINGLE 8 /* The file contains at most 1 b-tree */ -#define BTREE_UNORDERED 16 /* Use of a hash implementation is OK */ - -int sqlite3BtreeClose(Btree*); -int sqlite3BtreeSetCacheSize(Btree*,int); -int sqlite3BtreeSetSafetyLevel(Btree*,int,int,int); -int sqlite3BtreeSyncDisabled(Btree*); -int sqlite3BtreeSetPageSize(Btree *p, int nPagesize, int nReserve, int eFix); -int sqlite3BtreeGetPageSize(Btree*); -int sqlite3BtreeMaxPageCount(Btree*,int); -u32 sqlite3BtreeLastPage(Btree*); -int sqlite3BtreeSecureDelete(Btree*,int); -int sqlite3BtreeGetReserve(Btree*); -int sqlite3BtreeSetAutoVacuum(Btree *, int); -int sqlite3BtreeGetAutoVacuum(Btree *); -int sqlite3BtreeBeginTrans(Btree*,int); -int sqlite3BtreeCommitPhaseOne(Btree*, const char *zMaster); -int sqlite3BtreeCommitPhaseTwo(Btree*, int); -int sqlite3BtreeCommit(Btree*); -int sqlite3BtreeRollback(Btree*); -int sqlite3BtreeBeginStmt(Btree*,int); -int sqlite3BtreeCreateTable(Btree*, int*, int flags); -int sqlite3BtreeIsInTrans(Btree*); -int sqlite3BtreeIsInReadTrans(Btree*); -int sqlite3BtreeIsInBackup(Btree*); -void *sqlite3BtreeSchema(Btree *, int, void(*)(void *)); -int sqlite3BtreeSchemaLocked(Btree *pBtree); -int sqlite3BtreeLockTable(Btree *pBtree, int iTab, u8 isWriteLock); -int sqlite3BtreeSavepoint(Btree *, int, int); - -const char *sqlite3BtreeGetFilename(Btree *); -const char *sqlite3BtreeGetJournalname(Btree *); -int sqlite3BtreeCopyFile(Btree *, Btree *); - -int sqlite3BtreeIncrVacuum(Btree *); - -/* The flags parameter to sqlite3BtreeCreateTable can be the bitwise OR -** of the flags shown below. -** -** Every SQLite table must have either BTREE_INTKEY or BTREE_BLOBKEY set. -** With BTREE_INTKEY, the table key is a 64-bit integer and arbitrary data -** is stored in the leaves. (BTREE_INTKEY is used for SQL tables.) With -** BTREE_BLOBKEY, the key is an arbitrary BLOB and no content is stored -** anywhere - the key is the content. (BTREE_BLOBKEY is used for SQL -** indices.) -*/ -#define BTREE_INTKEY 1 /* Table has only 64-bit signed integer keys */ -#define BTREE_BLOBKEY 2 /* Table has keys only - no data */ - -int sqlite3BtreeDropTable(Btree*, int, int*); -int sqlite3BtreeClearTable(Btree*, int, int*); -void sqlite3BtreeTripAllCursors(Btree*, int); - -void sqlite3BtreeGetMeta(Btree *pBtree, int idx, u32 *pValue); -int sqlite3BtreeUpdateMeta(Btree*, int idx, u32 value); - -/* -** The second parameter to sqlite3BtreeGetMeta or sqlite3BtreeUpdateMeta -** should be one of the following values. The integer values are assigned -** to constants so that the offset of the corresponding field in an -** SQLite database header may be found using the following formula: -** -** offset = 36 + (idx * 4) -** -** For example, the free-page-count field is located at byte offset 36 of -** the database file header. The incr-vacuum-flag field is located at -** byte offset 64 (== 36+4*7). -*/ -#define BTREE_FREE_PAGE_COUNT 0 -#define BTREE_SCHEMA_VERSION 1 -#define BTREE_FILE_FORMAT 2 -#define BTREE_DEFAULT_CACHE_SIZE 3 -#define BTREE_LARGEST_ROOT_PAGE 4 -#define BTREE_TEXT_ENCODING 5 -#define BTREE_USER_VERSION 6 -#define BTREE_INCR_VACUUM 7 - -int sqlite3BtreeCursor( - Btree*, /* BTree containing table to open */ - int iTable, /* Index of root page */ - int wrFlag, /* 1 for writing. 0 for read-only */ - struct KeyInfo*, /* First argument to compare function */ - BtCursor *pCursor /* Space to write cursor structure */ -); -int sqlite3BtreeCursorSize(void); -void sqlite3BtreeCursorZero(BtCursor*); - -int sqlite3BtreeCloseCursor(BtCursor*); -int sqlite3BtreeMovetoUnpacked( - BtCursor*, - UnpackedRecord *pUnKey, - i64 intKey, - int bias, - int *pRes -); -int sqlite3BtreeCursorHasMoved(BtCursor*, int*); -int sqlite3BtreeDelete(BtCursor*); -int sqlite3BtreeInsert(BtCursor*, const void *pKey, i64 nKey, - const void *pData, int nData, - int nZero, int bias, int seekResult); -int sqlite3BtreeFirst(BtCursor*, int *pRes); -int sqlite3BtreeLast(BtCursor*, int *pRes); -int sqlite3BtreeNext(BtCursor*, int *pRes); -int sqlite3BtreeEof(BtCursor*); -int sqlite3BtreePrevious(BtCursor*, int *pRes); -int sqlite3BtreeKeySize(BtCursor*, i64 *pSize); -int sqlite3BtreeKey(BtCursor*, u32 offset, u32 amt, void*); -const void *sqlite3BtreeKeyFetch(BtCursor*, int *pAmt); -const void *sqlite3BtreeDataFetch(BtCursor*, int *pAmt); -int sqlite3BtreeDataSize(BtCursor*, u32 *pSize); -int sqlite3BtreeData(BtCursor*, u32 offset, u32 amt, void*); -void sqlite3BtreeSetCachedRowid(BtCursor*, sqlite3_int64); -sqlite3_int64 sqlite3BtreeGetCachedRowid(BtCursor*); - -char *sqlite3BtreeIntegrityCheck(Btree*, int *aRoot, int nRoot, int, int*); -struct Pager *sqlite3BtreePager(Btree*); - -int sqlite3BtreePutData(BtCursor*, u32 offset, u32 amt, void*); -void sqlite3BtreeCacheOverflow(BtCursor *); -void sqlite3BtreeClearCursor(BtCursor *); - -int sqlite3BtreeSetVersion(Btree *pBt, int iVersion); - -#ifndef NDEBUG -int sqlite3BtreeCursorIsValid(BtCursor*); -#endif - -#ifndef SQLITE_OMIT_BTREECOUNT -int sqlite3BtreeCount(BtCursor *, i64 *); -#endif - -#ifdef SQLITE_TEST -int sqlite3BtreeCursorInfo(BtCursor*, int*, int); -void sqlite3BtreeCursorList(Btree*); -#endif - -#ifndef SQLITE_OMIT_WAL - int sqlite3BtreeCheckpoint(Btree*, int, int *, int *); -#endif - -/* -** If we are not using shared cache, then there is no need to -** use mutexes to access the BtShared structures. So make the -** Enter and Leave procedures no-ops. -*/ -#ifndef SQLITE_OMIT_SHARED_CACHE - void sqlite3BtreeEnter(Btree*); - void sqlite3BtreeEnterAll(sqlite3*); -#else -# define sqlite3BtreeEnter(X) -# define sqlite3BtreeEnterAll(X) -#endif - -#if !defined(SQLITE_OMIT_SHARED_CACHE) && SQLITE_THREADSAFE - int sqlite3BtreeSharable(Btree*); - void sqlite3BtreeLeave(Btree*); - void sqlite3BtreeEnterCursor(BtCursor*); - void sqlite3BtreeLeaveCursor(BtCursor*); - void sqlite3BtreeLeaveAll(sqlite3*); -#ifndef NDEBUG - /* These routines are used inside assert() statements only. */ - int sqlite3BtreeHoldsMutex(Btree*); - int sqlite3BtreeHoldsAllMutexes(sqlite3*); - int sqlite3SchemaMutexHeld(sqlite3*,int,Schema*); -#endif -#else - -# define sqlite3BtreeSharable(X) 0 -# define sqlite3BtreeLeave(X) -# define sqlite3BtreeEnterCursor(X) -# define sqlite3BtreeLeaveCursor(X) -# define sqlite3BtreeLeaveAll(X) - -# define sqlite3BtreeHoldsMutex(X) 1 -# define sqlite3BtreeHoldsAllMutexes(X) 1 -# define sqlite3SchemaMutexHeld(X,Y,Z) 1 -#endif - - -#endif /* _BTREE_H_ */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/btreeInt.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/btreeInt.h deleted file mode 100644 index 25d0c19399..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/btreeInt.h +++ /dev/null @@ -1,643 +0,0 @@ -/* -** 2004 April 6 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file implements a external (disk-based) database using BTrees. -** For a detailed discussion of BTrees, refer to -** -** Donald E. Knuth, THE ART OF COMPUTER PROGRAMMING, Volume 3: -** "Sorting And Searching", pages 473-480. Addison-Wesley -** Publishing Company, Reading, Massachusetts. -** -** The basic idea is that each page of the file contains N database -** entries and N+1 pointers to subpages. -** -** ---------------------------------------------------------------- -** | Ptr(0) | Key(0) | Ptr(1) | Key(1) | ... | Key(N-1) | Ptr(N) | -** ---------------------------------------------------------------- -** -** All of the keys on the page that Ptr(0) points to have values less -** than Key(0). All of the keys on page Ptr(1) and its subpages have -** values greater than Key(0) and less than Key(1). All of the keys -** on Ptr(N) and its subpages have values greater than Key(N-1). And -** so forth. -** -** Finding a particular key requires reading O(log(M)) pages from the -** disk where M is the number of entries in the tree. -** -** In this implementation, a single file can hold one or more separate -** BTrees. Each BTree is identified by the index of its root page. The -** key and data for any entry are combined to form the "payload". A -** fixed amount of payload can be carried directly on the database -** page. If the payload is larger than the preset amount then surplus -** bytes are stored on overflow pages. The payload for an entry -** and the preceding pointer are combined to form a "Cell". Each -** page has a small header which contains the Ptr(N) pointer and other -** information such as the size of key and data. -** -** FORMAT DETAILS -** -** The file is divided into pages. The first page is called page 1, -** the second is page 2, and so forth. A page number of zero indicates -** "no such page". The page size can be any power of 2 between 512 and 65536. -** Each page can be either a btree page, a freelist page, an overflow -** page, or a pointer-map page. -** -** The first page is always a btree page. The first 100 bytes of the first -** page contain a special header (the "file header") that describes the file. -** The format of the file header is as follows: -** -** OFFSET SIZE DESCRIPTION -** 0 16 Header string: "SQLite format 3\000" -** 16 2 Page size in bytes. -** 18 1 File format write version -** 19 1 File format read version -** 20 1 Bytes of unused space at the end of each page -** 21 1 Max embedded payload fraction -** 22 1 Min embedded payload fraction -** 23 1 Min leaf payload fraction -** 24 4 File change counter -** 28 4 Reserved for future use -** 32 4 First freelist page -** 36 4 Number of freelist pages in the file -** 40 60 15 4-byte meta values passed to higher layers -** -** 40 4 Schema cookie -** 44 4 File format of schema layer -** 48 4 Size of page cache -** 52 4 Largest root-page (auto/incr_vacuum) -** 56 4 1=UTF-8 2=UTF16le 3=UTF16be -** 60 4 User version -** 64 4 Incremental vacuum mode -** 68 4 unused -** 72 4 unused -** 76 4 unused -** -** All of the integer values are big-endian (most significant byte first). -** -** The file change counter is incremented when the database is changed -** This counter allows other processes to know when the file has changed -** and thus when they need to flush their cache. -** -** The max embedded payload fraction is the amount of the total usable -** space in a page that can be consumed by a single cell for standard -** B-tree (non-LEAFDATA) tables. A value of 255 means 100%. The default -** is to limit the maximum cell size so that at least 4 cells will fit -** on one page. Thus the default max embedded payload fraction is 64. -** -** If the payload for a cell is larger than the max payload, then extra -** payload is spilled to overflow pages. Once an overflow page is allocated, -** as many bytes as possible are moved into the overflow pages without letting -** the cell size drop below the min embedded payload fraction. -** -** The min leaf payload fraction is like the min embedded payload fraction -** except that it applies to leaf nodes in a LEAFDATA tree. The maximum -** payload fraction for a LEAFDATA tree is always 100% (or 255) and it -** not specified in the header. -** -** Each btree pages is divided into three sections: The header, the -** cell pointer array, and the cell content area. Page 1 also has a 100-byte -** file header that occurs before the page header. -** -** |----------------| -** | file header | 100 bytes. Page 1 only. -** |----------------| -** | page header | 8 bytes for leaves. 12 bytes for interior nodes -** |----------------| -** | cell pointer | | 2 bytes per cell. Sorted order. -** | array | | Grows downward -** | | v -** |----------------| -** | unallocated | -** | space | -** |----------------| ^ Grows upwards -** | cell content | | Arbitrary order interspersed with freeblocks. -** | area | | and free space fragments. -** |----------------| -** -** The page headers looks like this: -** -** OFFSET SIZE DESCRIPTION -** 0 1 Flags. 1: intkey, 2: zerodata, 4: leafdata, 8: leaf -** 1 2 byte offset to the first freeblock -** 3 2 number of cells on this page -** 5 2 first byte of the cell content area -** 7 1 number of fragmented free bytes -** 8 4 Right child (the Ptr(N) value). Omitted on leaves. -** -** The flags define the format of this btree page. The leaf flag means that -** this page has no children. The zerodata flag means that this page carries -** only keys and no data. The intkey flag means that the key is a integer -** which is stored in the key size entry of the cell header rather than in -** the payload area. -** -** The cell pointer array begins on the first byte after the page header. -** The cell pointer array contains zero or more 2-byte numbers which are -** offsets from the beginning of the page to the cell content in the cell -** content area. The cell pointers occur in sorted order. The system strives -** to keep free space after the last cell pointer so that new cells can -** be easily added without having to defragment the page. -** -** Cell content is stored at the very end of the page and grows toward the -** beginning of the page. -** -** Unused space within the cell content area is collected into a linked list of -** freeblocks. Each freeblock is at least 4 bytes in size. The byte offset -** to the first freeblock is given in the header. Freeblocks occur in -** increasing order. Because a freeblock must be at least 4 bytes in size, -** any group of 3 or fewer unused bytes in the cell content area cannot -** exist on the freeblock chain. A group of 3 or fewer free bytes is called -** a fragment. The total number of bytes in all fragments is recorded. -** in the page header at offset 7. -** -** SIZE DESCRIPTION -** 2 Byte offset of the next freeblock -** 2 Bytes in this freeblock -** -** Cells are of variable length. Cells are stored in the cell content area at -** the end of the page. Pointers to the cells are in the cell pointer array -** that immediately follows the page header. Cells is not necessarily -** contiguous or in order, but cell pointers are contiguous and in order. -** -** Cell content makes use of variable length integers. A variable -** length integer is 1 to 9 bytes where the lower 7 bits of each -** byte are used. The integer consists of all bytes that have bit 8 set and -** the first byte with bit 8 clear. The most significant byte of the integer -** appears first. A variable-length integer may not be more than 9 bytes long. -** As a special case, all 8 bytes of the 9th byte are used as data. This -** allows a 64-bit integer to be encoded in 9 bytes. -** -** 0x00 becomes 0x00000000 -** 0x7f becomes 0x0000007f -** 0x81 0x00 becomes 0x00000080 -** 0x82 0x00 becomes 0x00000100 -** 0x80 0x7f becomes 0x0000007f -** 0x8a 0x91 0xd1 0xac 0x78 becomes 0x12345678 -** 0x81 0x81 0x81 0x81 0x01 becomes 0x10204081 -** -** Variable length integers are used for rowids and to hold the number of -** bytes of key and data in a btree cell. -** -** The content of a cell looks like this: -** -** SIZE DESCRIPTION -** 4 Page number of the left child. Omitted if leaf flag is set. -** var Number of bytes of data. Omitted if the zerodata flag is set. -** var Number of bytes of key. Or the key itself if intkey flag is set. -** * Payload -** 4 First page of the overflow chain. Omitted if no overflow -** -** Overflow pages form a linked list. Each page except the last is completely -** filled with data (pagesize - 4 bytes). The last page can have as little -** as 1 byte of data. -** -** SIZE DESCRIPTION -** 4 Page number of next overflow page -** * Data -** -** Freelist pages come in two subtypes: trunk pages and leaf pages. The -** file header points to the first in a linked list of trunk page. Each trunk -** page points to multiple leaf pages. The content of a leaf page is -** unspecified. A trunk page looks like this: -** -** SIZE DESCRIPTION -** 4 Page number of next trunk page -** 4 Number of leaf pointers on this page -** * zero or more pages numbers of leaves -*/ -#include "sqliteInt.h" - - -/* The following value is the maximum cell size assuming a maximum page -** size give above. -*/ -#define MX_CELL_SIZE(pBt) ((int)(pBt->pageSize-8)) - -/* The maximum number of cells on a single page of the database. This -** assumes a minimum cell size of 6 bytes (4 bytes for the cell itself -** plus 2 bytes for the index to the cell in the page header). Such -** small cells will be rare, but they are possible. -*/ -#define MX_CELL(pBt) ((pBt->pageSize-8)/6) - -/* Forward declarations */ -typedef struct MemPage MemPage; -typedef struct BtLock BtLock; - -/* -** This is a magic string that appears at the beginning of every -** SQLite database in order to identify the file as a real database. -** -** You can change this value at compile-time by specifying a -** -DSQLITE_FILE_HEADER="..." on the compiler command-line. The -** header must be exactly 16 bytes including the zero-terminator so -** the string itself should be 15 characters long. If you change -** the header, then your custom library will not be able to read -** databases generated by the standard tools and the standard tools -** will not be able to read databases created by your custom library. -*/ -#ifndef SQLITE_FILE_HEADER /* 123456789 123456 */ -# define SQLITE_FILE_HEADER "SQLite format 3" -#endif - -/* -** Page type flags. An ORed combination of these flags appear as the -** first byte of on-disk image of every BTree page. -*/ -#define PTF_INTKEY 0x01 -#define PTF_ZERODATA 0x02 -#define PTF_LEAFDATA 0x04 -#define PTF_LEAF 0x08 - -/* -** As each page of the file is loaded into memory, an instance of the following -** structure is appended and initialized to zero. This structure stores -** information about the page that is decoded from the raw file page. -** -** The pParent field points back to the parent page. This allows us to -** walk up the BTree from any leaf to the root. Care must be taken to -** unref() the parent page pointer when this page is no longer referenced. -** The pageDestructor() routine handles that chore. -** -** Access to all fields of this structure is controlled by the mutex -** stored in MemPage.pBt->mutex. -*/ -struct MemPage { - u8 isInit; /* True if previously initialized. MUST BE FIRST! */ - u8 nOverflow; /* Number of overflow cell bodies in aCell[] */ - u8 intKey; /* True if intkey flag is set */ - u8 leaf; /* True if leaf flag is set */ - u8 hasData; /* True if this page stores data */ - u8 hdrOffset; /* 100 for page 1. 0 otherwise */ - u8 childPtrSize; /* 0 if leaf==1. 4 if leaf==0 */ - u16 maxLocal; /* Copy of BtShared.maxLocal or BtShared.maxLeaf */ - u16 minLocal; /* Copy of BtShared.minLocal or BtShared.minLeaf */ - u16 cellOffset; /* Index in aData of first cell pointer */ - u16 nFree; /* Number of free bytes on the page */ - u16 nCell; /* Number of cells on this page, local and ovfl */ - u16 maskPage; /* Mask for page offset */ - struct _OvflCell { /* Cells that will not fit on aData[] */ - u8 *pCell; /* Pointers to the body of the overflow cell */ - u16 idx; /* Insert this cell before idx-th non-overflow cell */ - } aOvfl[5]; - BtShared *pBt; /* Pointer to BtShared that this page is part of */ - u8 *aData; /* Pointer to disk image of the page data */ - DbPage *pDbPage; /* Pager page handle */ - Pgno pgno; /* Page number for this page */ -}; - -/* -** The in-memory image of a disk page has the auxiliary information appended -** to the end. EXTRA_SIZE is the number of bytes of space needed to hold -** that extra information. -*/ -#define EXTRA_SIZE sizeof(MemPage) - -/* -** A linked list of the following structures is stored at BtShared.pLock. -** Locks are added (or upgraded from READ_LOCK to WRITE_LOCK) when a cursor -** is opened on the table with root page BtShared.iTable. Locks are removed -** from this list when a transaction is committed or rolled back, or when -** a btree handle is closed. -*/ -struct BtLock { - Btree *pBtree; /* Btree handle holding this lock */ - Pgno iTable; /* Root page of table */ - u8 eLock; /* READ_LOCK or WRITE_LOCK */ - BtLock *pNext; /* Next in BtShared.pLock list */ -}; - -/* Candidate values for BtLock.eLock */ -#define READ_LOCK 1 -#define WRITE_LOCK 2 - -/* A Btree handle -** -** A database connection contains a pointer to an instance of -** this object for every database file that it has open. This structure -** is opaque to the database connection. The database connection cannot -** see the internals of this structure and only deals with pointers to -** this structure. -** -** For some database files, the same underlying database cache might be -** shared between multiple connections. In that case, each connection -** has it own instance of this object. But each instance of this object -** points to the same BtShared object. The database cache and the -** schema associated with the database file are all contained within -** the BtShared object. -** -** All fields in this structure are accessed under sqlite3.mutex. -** The pBt pointer itself may not be changed while there exists cursors -** in the referenced BtShared that point back to this Btree since those -** cursors have to go through this Btree to find their BtShared and -** they often do so without holding sqlite3.mutex. -*/ -struct Btree { - sqlite3 *db; /* The database connection holding this btree */ - BtShared *pBt; /* Sharable content of this btree */ - u8 inTrans; /* TRANS_NONE, TRANS_READ or TRANS_WRITE */ - u8 sharable; /* True if we can share pBt with another db */ - u8 locked; /* True if db currently has pBt locked */ - int wantToLock; /* Number of nested calls to sqlite3BtreeEnter() */ - int nBackup; /* Number of backup operations reading this btree */ - Btree *pNext; /* List of other sharable Btrees from the same db */ - Btree *pPrev; /* Back pointer of the same list */ -#ifndef SQLITE_OMIT_SHARED_CACHE - BtLock lock; /* Object used to lock page 1 */ -#endif -}; - -/* -** Btree.inTrans may take one of the following values. -** -** If the shared-data extension is enabled, there may be multiple users -** of the Btree structure. At most one of these may open a write transaction, -** but any number may have active read transactions. -*/ -#define TRANS_NONE 0 -#define TRANS_READ 1 -#define TRANS_WRITE 2 - -/* -** An instance of this object represents a single database file. -** -** A single database file can be in use as the same time by two -** or more database connections. When two or more connections are -** sharing the same database file, each connection has it own -** private Btree object for the file and each of those Btrees points -** to this one BtShared object. BtShared.nRef is the number of -** connections currently sharing this database file. -** -** Fields in this structure are accessed under the BtShared.mutex -** mutex, except for nRef and pNext which are accessed under the -** global SQLITE_MUTEX_STATIC_MASTER mutex. The pPager field -** may not be modified once it is initially set as long as nRef>0. -** The pSchema field may be set once under BtShared.mutex and -** thereafter is unchanged as long as nRef>0. -** -** isPending: -** -** If a BtShared client fails to obtain a write-lock on a database -** table (because there exists one or more read-locks on the table), -** the shared-cache enters 'pending-lock' state and isPending is -** set to true. -** -** The shared-cache leaves the 'pending lock' state when either of -** the following occur: -** -** 1) The current writer (BtShared.pWriter) concludes its transaction, OR -** 2) The number of locks held by other connections drops to zero. -** -** while in the 'pending-lock' state, no connection may start a new -** transaction. -** -** This feature is included to help prevent writer-starvation. -*/ -struct BtShared { - Pager *pPager; /* The page cache */ - sqlite3 *db; /* Database connection currently using this Btree */ - BtCursor *pCursor; /* A list of all open cursors */ - MemPage *pPage1; /* First page of the database */ - u8 readOnly; /* True if the underlying file is readonly */ - u8 pageSizeFixed; /* True if the page size can no longer be changed */ - u8 secureDelete; /* True if secure_delete is enabled */ - u8 initiallyEmpty; /* Database is empty at start of transaction */ - u8 openFlags; /* Flags to sqlite3BtreeOpen() */ -#ifndef SQLITE_OMIT_AUTOVACUUM - u8 autoVacuum; /* True if auto-vacuum is enabled */ - u8 incrVacuum; /* True if incr-vacuum is enabled */ -#endif - u8 inTransaction; /* Transaction state */ - u8 doNotUseWAL; /* If true, do not open write-ahead-log file */ - u16 maxLocal; /* Maximum local payload in non-LEAFDATA tables */ - u16 minLocal; /* Minimum local payload in non-LEAFDATA tables */ - u16 maxLeaf; /* Maximum local payload in a LEAFDATA table */ - u16 minLeaf; /* Minimum local payload in a LEAFDATA table */ - u32 pageSize; /* Total number of bytes on a page */ - u32 usableSize; /* Number of usable bytes on each page */ - int nTransaction; /* Number of open transactions (read + write) */ - u32 nPage; /* Number of pages in the database */ - void *pSchema; /* Pointer to space allocated by sqlite3BtreeSchema() */ - void (*xFreeSchema)(void*); /* Destructor for BtShared.pSchema */ - sqlite3_mutex *mutex; /* Non-recursive mutex required to access this object */ - Bitvec *pHasContent; /* Set of pages moved to free-list this transaction */ -#ifndef SQLITE_OMIT_SHARED_CACHE - int nRef; /* Number of references to this structure */ - BtShared *pNext; /* Next on a list of sharable BtShared structs */ - BtLock *pLock; /* List of locks held on this shared-btree struct */ - Btree *pWriter; /* Btree with currently open write transaction */ - u8 isExclusive; /* True if pWriter has an EXCLUSIVE lock on the db */ - u8 isPending; /* If waiting for read-locks to clear */ -#endif - u8 *pTmpSpace; /* BtShared.pageSize bytes of space for tmp use */ -}; - -/* -** An instance of the following structure is used to hold information -** about a cell. The parseCellPtr() function fills in this structure -** based on information extract from the raw disk page. -*/ -typedef struct CellInfo CellInfo; -struct CellInfo { - i64 nKey; /* The key for INTKEY tables, or number of bytes in key */ - u8 *pCell; /* Pointer to the start of cell content */ - u32 nData; /* Number of bytes of data */ - u32 nPayload; /* Total amount of payload */ - u16 nHeader; /* Size of the cell content header in bytes */ - u16 nLocal; /* Amount of payload held locally */ - u16 iOverflow; /* Offset to overflow page number. Zero if no overflow */ - u16 nSize; /* Size of the cell content on the main b-tree page */ -}; - -/* -** Maximum depth of an SQLite B-Tree structure. Any B-Tree deeper than -** this will be declared corrupt. This value is calculated based on a -** maximum database size of 2^31 pages a minimum fanout of 2 for a -** root-node and 3 for all other internal nodes. -** -** If a tree that appears to be taller than this is encountered, it is -** assumed that the database is corrupt. -*/ -#define BTCURSOR_MAX_DEPTH 20 - -/* -** A cursor is a pointer to a particular entry within a particular -** b-tree within a database file. -** -** The entry is identified by its MemPage and the index in -** MemPage.aCell[] of the entry. -** -** A single database file can shared by two more database connections, -** but cursors cannot be shared. Each cursor is associated with a -** particular database connection identified BtCursor.pBtree.db. -** -** Fields in this structure are accessed under the BtShared.mutex -** found at self->pBt->mutex. -*/ -struct BtCursor { - Btree *pBtree; /* The Btree to which this cursor belongs */ - BtShared *pBt; /* The BtShared this cursor points to */ - BtCursor *pNext, *pPrev; /* Forms a linked list of all cursors */ - struct KeyInfo *pKeyInfo; /* Argument passed to comparison function */ - Pgno pgnoRoot; /* The root page of this tree */ - sqlite3_int64 cachedRowid; /* Next rowid cache. 0 means not valid */ - CellInfo info; /* A parse of the cell we are pointing at */ - i64 nKey; /* Size of pKey, or last integer key */ - void *pKey; /* Saved key that was cursor's last known position */ - int skipNext; /* Prev() is noop if negative. Next() is noop if positive */ - u8 wrFlag; /* True if writable */ - u8 atLast; /* Cursor pointing to the last entry */ - u8 validNKey; /* True if info.nKey is valid */ - u8 eState; /* One of the CURSOR_XXX constants (see below) */ -#ifndef SQLITE_OMIT_INCRBLOB - Pgno *aOverflow; /* Cache of overflow page locations */ - u8 isIncrblobHandle; /* True if this cursor is an incr. io handle */ -#endif - i16 iPage; /* Index of current page in apPage */ - u16 aiIdx[BTCURSOR_MAX_DEPTH]; /* Current index in apPage[i] */ - MemPage *apPage[BTCURSOR_MAX_DEPTH]; /* Pages from root to current page */ -}; - -/* -** Potential values for BtCursor.eState. -** -** CURSOR_VALID: -** Cursor points to a valid entry. getPayload() etc. may be called. -** -** CURSOR_INVALID: -** Cursor does not point to a valid entry. This can happen (for example) -** because the table is empty or because BtreeCursorFirst() has not been -** called. -** -** CURSOR_REQUIRESEEK: -** The table that this cursor was opened on still exists, but has been -** modified since the cursor was last used. The cursor position is saved -** in variables BtCursor.pKey and BtCursor.nKey. When a cursor is in -** this state, restoreCursorPosition() can be called to attempt to -** seek the cursor to the saved position. -** -** CURSOR_FAULT: -** A unrecoverable error (an I/O error or a malloc failure) has occurred -** on a different connection that shares the BtShared cache with this -** cursor. The error has left the cache in an inconsistent state. -** Do nothing else with this cursor. Any attempt to use the cursor -** should return the error code stored in BtCursor.skip -*/ -#define CURSOR_INVALID 0 -#define CURSOR_VALID 1 -#define CURSOR_REQUIRESEEK 2 -#define CURSOR_FAULT 3 - -/* -** The database page the PENDING_BYTE occupies. This page is never used. -*/ -# define PENDING_BYTE_PAGE(pBt) PAGER_MJ_PGNO(pBt) - -/* -** These macros define the location of the pointer-map entry for a -** database page. The first argument to each is the number of usable -** bytes on each page of the database (often 1024). The second is the -** page number to look up in the pointer map. -** -** PTRMAP_PAGENO returns the database page number of the pointer-map -** page that stores the required pointer. PTRMAP_PTROFFSET returns -** the offset of the requested map entry. -** -** If the pgno argument passed to PTRMAP_PAGENO is a pointer-map page, -** then pgno is returned. So (pgno==PTRMAP_PAGENO(pgsz, pgno)) can be -** used to test if pgno is a pointer-map page. PTRMAP_ISPAGE implements -** this test. -*/ -#define PTRMAP_PAGENO(pBt, pgno) ptrmapPageno(pBt, pgno) -#define PTRMAP_PTROFFSET(pgptrmap, pgno) (5*(pgno-pgptrmap-1)) -#define PTRMAP_ISPAGE(pBt, pgno) (PTRMAP_PAGENO((pBt),(pgno))==(pgno)) - -/* -** The pointer map is a lookup table that identifies the parent page for -** each child page in the database file. The parent page is the page that -** contains a pointer to the child. Every page in the database contains -** 0 or 1 parent pages. (In this context 'database page' refers -** to any page that is not part of the pointer map itself.) Each pointer map -** entry consists of a single byte 'type' and a 4 byte parent page number. -** The PTRMAP_XXX identifiers below are the valid types. -** -** The purpose of the pointer map is to facility moving pages from one -** position in the file to another as part of autovacuum. When a page -** is moved, the pointer in its parent must be updated to point to the -** new location. The pointer map is used to locate the parent page quickly. -** -** PTRMAP_ROOTPAGE: The database page is a root-page. The page-number is not -** used in this case. -** -** PTRMAP_FREEPAGE: The database page is an unused (free) page. The page-number -** is not used in this case. -** -** PTRMAP_OVERFLOW1: The database page is the first page in a list of -** overflow pages. The page number identifies the page that -** contains the cell with a pointer to this overflow page. -** -** PTRMAP_OVERFLOW2: The database page is the second or later page in a list of -** overflow pages. The page-number identifies the previous -** page in the overflow page list. -** -** PTRMAP_BTREE: The database page is a non-root btree page. The page number -** identifies the parent page in the btree. -*/ -#define PTRMAP_ROOTPAGE 1 -#define PTRMAP_FREEPAGE 2 -#define PTRMAP_OVERFLOW1 3 -#define PTRMAP_OVERFLOW2 4 -#define PTRMAP_BTREE 5 - -/* A bunch of assert() statements to check the transaction state variables -** of handle p (type Btree*) are internally consistent. -*/ -#define btreeIntegrity(p) \ - assert( p->pBt->inTransaction!=TRANS_NONE || p->pBt->nTransaction==0 ); \ - assert( p->pBt->inTransaction>=p->inTrans ); - - -/* -** The ISAUTOVACUUM macro is used within balance_nonroot() to determine -** if the database supports auto-vacuum or not. Because it is used -** within an expression that is an argument to another macro -** (sqliteMallocRaw), it is not possible to use conditional compilation. -** So, this macro is defined instead. -*/ -#ifndef SQLITE_OMIT_AUTOVACUUM -#define ISAUTOVACUUM (pBt->autoVacuum) -#else -#define ISAUTOVACUUM 0 -#endif - - -/* -** This structure is passed around through all the sanity checking routines -** in order to keep track of some global state information. -*/ -typedef struct IntegrityCk IntegrityCk; -struct IntegrityCk { - BtShared *pBt; /* The tree being checked out */ - Pager *pPager; /* The associated pager. Also accessible by pBt->pPager */ - Pgno nPage; /* Number of pages in the database */ - int *anRef; /* Number of times each page is referenced */ - int mxErr; /* Stop accumulating errors when this reaches zero */ - int nErr; /* Number of messages written to zErrMsg so far */ - int mallocFailed; /* A memory allocation error has occurred */ - StrAccum errMsg; /* Accumulate the error message text here */ -}; - -/* -** Read or write a two- and four-byte big-endian integer values. -*/ -#define get2byte(x) ((x)[0]<<8 | (x)[1]) -#define put2byte(p,v) ((p)[0] = (u8)((v)>>8), (p)[1] = (u8)(v)) -#define get4byte sqlite3Get4byte -#define put4byte sqlite3Put4byte diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/build.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/build.c deleted file mode 100644 index 83e13da896..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/build.c +++ /dev/null @@ -1,3818 +0,0 @@ -/* -** 2001 September 15 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file contains C code routines that are called by the SQLite parser -** when syntax rules are reduced. The routines in this file handle the -** following kinds of SQL syntax: -** -** CREATE TABLE -** DROP TABLE -** CREATE INDEX -** DROP INDEX -** creating ID lists -** BEGIN TRANSACTION -** COMMIT -** ROLLBACK -*/ -#include "sqliteInt.h" - -/* -** This routine is called when a new SQL statement is beginning to -** be parsed. Initialize the pParse structure as needed. -*/ -void sqlite3BeginParse(Parse *pParse, int explainFlag){ - pParse->explain = (u8)explainFlag; - pParse->nVar = 0; -} - -#ifndef SQLITE_OMIT_SHARED_CACHE -/* -** The TableLock structure is only used by the sqlite3TableLock() and -** codeTableLocks() functions. -*/ -struct TableLock { - int iDb; /* The database containing the table to be locked */ - int iTab; /* The root page of the table to be locked */ - u8 isWriteLock; /* True for write lock. False for a read lock */ - const char *zName; /* Name of the table */ -}; - -/* -** Record the fact that we want to lock a table at run-time. -** -** The table to be locked has root page iTab and is found in database iDb. -** A read or a write lock can be taken depending on isWritelock. -** -** This routine just records the fact that the lock is desired. The -** code to make the lock occur is generated by a later call to -** codeTableLocks() which occurs during sqlite3FinishCoding(). -*/ -void sqlite3TableLock( - Parse *pParse, /* Parsing context */ - int iDb, /* Index of the database containing the table to lock */ - int iTab, /* Root page number of the table to be locked */ - u8 isWriteLock, /* True for a write lock */ - const char *zName /* Name of the table to be locked */ -){ - Parse *pToplevel = sqlite3ParseToplevel(pParse); - int i; - int nBytes; - TableLock *p; - assert( iDb>=0 ); - - for(i=0; inTableLock; i++){ - p = &pToplevel->aTableLock[i]; - if( p->iDb==iDb && p->iTab==iTab ){ - p->isWriteLock = (p->isWriteLock || isWriteLock); - return; - } - } - - nBytes = sizeof(TableLock) * (pToplevel->nTableLock+1); - pToplevel->aTableLock = - sqlite3DbReallocOrFree(pToplevel->db, pToplevel->aTableLock, nBytes); - if( pToplevel->aTableLock ){ - p = &pToplevel->aTableLock[pToplevel->nTableLock++]; - p->iDb = iDb; - p->iTab = iTab; - p->isWriteLock = isWriteLock; - p->zName = zName; - }else{ - pToplevel->nTableLock = 0; - pToplevel->db->mallocFailed = 1; - } -} - -/* -** Code an OP_TableLock instruction for each table locked by the -** statement (configured by calls to sqlite3TableLock()). -*/ -static void codeTableLocks(Parse *pParse){ - int i; - Vdbe *pVdbe; - - pVdbe = sqlite3GetVdbe(pParse); - assert( pVdbe!=0 ); /* sqlite3GetVdbe cannot fail: VDBE already allocated */ - - for(i=0; inTableLock; i++){ - TableLock *p = &pParse->aTableLock[i]; - int p1 = p->iDb; - sqlite3VdbeAddOp4(pVdbe, OP_TableLock, p1, p->iTab, p->isWriteLock, - p->zName, P4_STATIC); - } -} -#else - #define codeTableLocks(x) -#endif - -/* -** This routine is called after a single SQL statement has been -** parsed and a VDBE program to execute that statement has been -** prepared. This routine puts the finishing touches on the -** VDBE program and resets the pParse structure for the next -** parse. -** -** Note that if an error occurred, it might be the case that -** no VDBE code was generated. -*/ -void sqlite3FinishCoding(Parse *pParse){ - sqlite3 *db; - Vdbe *v; - - db = pParse->db; - if( db->mallocFailed ) return; - if( pParse->nested ) return; - if( pParse->nErr ) return; - - /* Begin by generating some termination code at the end of the - ** vdbe program - */ - v = sqlite3GetVdbe(pParse); - assert( !pParse->isMultiWrite - || sqlite3VdbeAssertMayAbort(v, pParse->mayAbort)); - if( v ){ - sqlite3VdbeAddOp0(v, OP_Halt); - - /* The cookie mask contains one bit for each database file open. - ** (Bit 0 is for main, bit 1 is for temp, and so forth.) Bits are - ** set for each database that is used. Generate code to start a - ** transaction on each used database and to verify the schema cookie - ** on each used database. - */ - if( pParse->cookieGoto>0 ){ - yDbMask mask; - int iDb; - sqlite3VdbeJumpHere(v, pParse->cookieGoto-1); - for(iDb=0, mask=1; iDbnDb; mask<<=1, iDb++){ - if( (mask & pParse->cookieMask)==0 ) continue; - sqlite3VdbeUsesBtree(v, iDb); - sqlite3VdbeAddOp2(v,OP_Transaction, iDb, (mask & pParse->writeMask)!=0); - if( db->init.busy==0 ){ - assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); - sqlite3VdbeAddOp3(v, OP_VerifyCookie, - iDb, pParse->cookieValue[iDb], - db->aDb[iDb].pSchema->iGeneration); - } - } -#ifndef SQLITE_OMIT_VIRTUALTABLE - { - int i; - for(i=0; inVtabLock; i++){ - char *vtab = (char *)sqlite3GetVTable(db, pParse->apVtabLock[i]); - sqlite3VdbeAddOp4(v, OP_VBegin, 0, 0, 0, vtab, P4_VTAB); - } - pParse->nVtabLock = 0; - } -#endif - - /* Once all the cookies have been verified and transactions opened, - ** obtain the required table-locks. This is a no-op unless the - ** shared-cache feature is enabled. - */ - codeTableLocks(pParse); - - /* Initialize any AUTOINCREMENT data structures required. - */ - sqlite3AutoincrementBegin(pParse); - - /* Finally, jump back to the beginning of the executable code. */ - sqlite3VdbeAddOp2(v, OP_Goto, 0, pParse->cookieGoto); - } - } - - - /* Get the VDBE program ready for execution - */ - if( v && ALWAYS(pParse->nErr==0) && !db->mallocFailed ){ -#ifdef SQLITE_DEBUG - FILE *trace = (db->flags & SQLITE_VdbeTrace)!=0 ? stdout : 0; - sqlite3VdbeTrace(v, trace); -#endif - assert( pParse->iCacheLevel==0 ); /* Disables and re-enables match */ - /* A minimum of one cursor is required if autoincrement is used - * See ticket [a696379c1f08866] */ - if( pParse->pAinc!=0 && pParse->nTab==0 ) pParse->nTab = 1; - sqlite3VdbeMakeReady(v, pParse); - pParse->rc = SQLITE_DONE; - pParse->colNamesSet = 0; - }else{ - pParse->rc = SQLITE_ERROR; - } - pParse->nTab = 0; - pParse->nMem = 0; - pParse->nSet = 0; - pParse->nVar = 0; - pParse->cookieMask = 0; - pParse->cookieGoto = 0; -} - -/* -** Run the parser and code generator recursively in order to generate -** code for the SQL statement given onto the end of the pParse context -** currently under construction. When the parser is run recursively -** this way, the final OP_Halt is not appended and other initialization -** and finalization steps are omitted because those are handling by the -** outermost parser. -** -** Not everything is nestable. This facility is designed to permit -** INSERT, UPDATE, and DELETE operations against SQLITE_MASTER. Use -** care if you decide to try to use this routine for some other purposes. -*/ -void sqlite3NestedParse(Parse *pParse, const char *zFormat, ...){ - va_list ap; - char *zSql; - char *zErrMsg = 0; - sqlite3 *db = pParse->db; -# define SAVE_SZ (sizeof(Parse) - offsetof(Parse,nVar)) - char saveBuf[SAVE_SZ]; - - if( pParse->nErr ) return; - assert( pParse->nested<10 ); /* Nesting should only be of limited depth */ - va_start(ap, zFormat); - zSql = sqlite3VMPrintf(db, zFormat, ap); - va_end(ap); - if( zSql==0 ){ - return; /* A malloc must have failed */ - } - pParse->nested++; - memcpy(saveBuf, &pParse->nVar, SAVE_SZ); - memset(&pParse->nVar, 0, SAVE_SZ); - sqlite3RunParser(pParse, zSql, &zErrMsg); - sqlite3DbFree(db, zErrMsg); - sqlite3DbFree(db, zSql); - memcpy(&pParse->nVar, saveBuf, SAVE_SZ); - pParse->nested--; -} - -/* -** Locate the in-memory structure that describes a particular database -** table given the name of that table and (optionally) the name of the -** database containing the table. Return NULL if not found. -** -** If zDatabase is 0, all databases are searched for the table and the -** first matching table is returned. (No checking for duplicate table -** names is done.) The search order is TEMP first, then MAIN, then any -** auxiliary databases added using the ATTACH command. -** -** See also sqlite3LocateTable(). -*/ -Table *sqlite3FindTable(sqlite3 *db, const char *zName, const char *zDatabase){ - Table *p = 0; - int i; - int nName; - assert( zName!=0 ); - nName = sqlite3Strlen30(zName); - /* All mutexes are required for schema access. Make sure we hold them. */ - assert( zDatabase!=0 || sqlite3BtreeHoldsAllMutexes(db) ); - for(i=OMIT_TEMPDB; inDb; i++){ - int j = (i<2) ? i^1 : i; /* Search TEMP before MAIN */ - if( zDatabase!=0 && sqlite3StrICmp(zDatabase, db->aDb[j].zName) ) continue; - assert( sqlite3SchemaMutexHeld(db, j, 0) ); - p = sqlite3HashFind(&db->aDb[j].pSchema->tblHash, zName, nName); - if( p ) break; - } - return p; -} - -/* -** Locate the in-memory structure that describes a particular database -** table given the name of that table and (optionally) the name of the -** database containing the table. Return NULL if not found. Also leave an -** error message in pParse->zErrMsg. -** -** The difference between this routine and sqlite3FindTable() is that this -** routine leaves an error message in pParse->zErrMsg where -** sqlite3FindTable() does not. -*/ -Table *sqlite3LocateTable( - Parse *pParse, /* context in which to report errors */ - int isView, /* True if looking for a VIEW rather than a TABLE */ - const char *zName, /* Name of the table we are looking for */ - const char *zDbase /* Name of the database. Might be NULL */ -){ - Table *p; - - /* Read the database schema. If an error occurs, leave an error message - ** and code in pParse and return NULL. */ - if( SQLITE_OK!=sqlite3ReadSchema(pParse) ){ - return 0; - } - - p = sqlite3FindTable(pParse->db, zName, zDbase); - if( p==0 ){ - const char *zMsg = isView ? "no such view" : "no such table"; - if( zDbase ){ - sqlite3ErrorMsg(pParse, "%s: %s.%s", zMsg, zDbase, zName); - }else{ - sqlite3ErrorMsg(pParse, "%s: %s", zMsg, zName); - } - pParse->checkSchema = 1; - } - return p; -} - -/* -** Locate the in-memory structure that describes -** a particular index given the name of that index -** and the name of the database that contains the index. -** Return NULL if not found. -** -** If zDatabase is 0, all databases are searched for the -** table and the first matching index is returned. (No checking -** for duplicate index names is done.) The search order is -** TEMP first, then MAIN, then any auxiliary databases added -** using the ATTACH command. -*/ -Index *sqlite3FindIndex(sqlite3 *db, const char *zName, const char *zDb){ - Index *p = 0; - int i; - int nName = sqlite3Strlen30(zName); - /* All mutexes are required for schema access. Make sure we hold them. */ - assert( zDb!=0 || sqlite3BtreeHoldsAllMutexes(db) ); - for(i=OMIT_TEMPDB; inDb; i++){ - int j = (i<2) ? i^1 : i; /* Search TEMP before MAIN */ - Schema *pSchema = db->aDb[j].pSchema; - assert( pSchema ); - if( zDb && sqlite3StrICmp(zDb, db->aDb[j].zName) ) continue; - assert( sqlite3SchemaMutexHeld(db, j, 0) ); - p = sqlite3HashFind(&pSchema->idxHash, zName, nName); - if( p ) break; - } - return p; -} - -/* -** Reclaim the memory used by an index -*/ -static void freeIndex(sqlite3 *db, Index *p){ -#ifndef SQLITE_OMIT_ANALYZE - sqlite3DeleteIndexSamples(db, p); -#endif - sqlite3DbFree(db, p->zColAff); - sqlite3DbFree(db, p); -} - -/* -** For the index called zIdxName which is found in the database iDb, -** unlike that index from its Table then remove the index from -** the index hash table and free all memory structures associated -** with the index. -*/ -void sqlite3UnlinkAndDeleteIndex(sqlite3 *db, int iDb, const char *zIdxName){ - Index *pIndex; - int len; - Hash *pHash; - - assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); - pHash = &db->aDb[iDb].pSchema->idxHash; - len = sqlite3Strlen30(zIdxName); - pIndex = sqlite3HashInsert(pHash, zIdxName, len, 0); - if( ALWAYS(pIndex) ){ - if( pIndex->pTable->pIndex==pIndex ){ - pIndex->pTable->pIndex = pIndex->pNext; - }else{ - Index *p; - /* Justification of ALWAYS(); The index must be on the list of - ** indices. */ - p = pIndex->pTable->pIndex; - while( ALWAYS(p) && p->pNext!=pIndex ){ p = p->pNext; } - if( ALWAYS(p && p->pNext==pIndex) ){ - p->pNext = pIndex->pNext; - } - } - freeIndex(db, pIndex); - } - db->flags |= SQLITE_InternChanges; -} - -/* -** Erase all schema information from the in-memory hash tables of -** a single database. This routine is called to reclaim memory -** before the database closes. It is also called during a rollback -** if there were schema changes during the transaction or if a -** schema-cookie mismatch occurs. -** -** If iDb<0 then reset the internal schema tables for all database -** files. If iDb>=0 then reset the internal schema for only the -** single file indicated. -*/ -void sqlite3ResetInternalSchema(sqlite3 *db, int iDb){ - int i, j; - assert( iDbnDb ); - - if( iDb>=0 ){ - /* Case 1: Reset the single schema identified by iDb */ - Db *pDb = &db->aDb[iDb]; - assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); - assert( pDb->pSchema!=0 ); - sqlite3SchemaClear(pDb->pSchema); - - /* If any database other than TEMP is reset, then also reset TEMP - ** since TEMP might be holding triggers that reference tables in the - ** other database. - */ - if( iDb!=1 ){ - pDb = &db->aDb[1]; - assert( pDb->pSchema!=0 ); - sqlite3SchemaClear(pDb->pSchema); - } - return; - } - /* Case 2 (from here to the end): Reset all schemas for all attached - ** databases. */ - assert( iDb<0 ); - sqlite3BtreeEnterAll(db); - for(i=0; inDb; i++){ - Db *pDb = &db->aDb[i]; - if( pDb->pSchema ){ - sqlite3SchemaClear(pDb->pSchema); - } - } - db->flags &= ~SQLITE_InternChanges; - sqlite3VtabUnlockList(db); - sqlite3BtreeLeaveAll(db); - - /* If one or more of the auxiliary database files has been closed, - ** then remove them from the auxiliary database list. We take the - ** opportunity to do this here since we have just deleted all of the - ** schema hash tables and therefore do not have to make any changes - ** to any of those tables. - */ - for(i=j=2; inDb; i++){ - struct Db *pDb = &db->aDb[i]; - if( pDb->pBt==0 ){ - sqlite3DbFree(db, pDb->zName); - pDb->zName = 0; - continue; - } - if( jaDb[j] = db->aDb[i]; - } - j++; - } - memset(&db->aDb[j], 0, (db->nDb-j)*sizeof(db->aDb[j])); - db->nDb = j; - if( db->nDb<=2 && db->aDb!=db->aDbStatic ){ - memcpy(db->aDbStatic, db->aDb, 2*sizeof(db->aDb[0])); - sqlite3DbFree(db, db->aDb); - db->aDb = db->aDbStatic; - } -} - -/* -** This routine is called when a commit occurs. -*/ -void sqlite3CommitInternalChanges(sqlite3 *db){ - db->flags &= ~SQLITE_InternChanges; -} - -/* -** Delete memory allocated for the column names of a table or view (the -** Table.aCol[] array). -*/ -static void sqliteDeleteColumnNames(sqlite3 *db, Table *pTable){ - int i; - Column *pCol; - assert( pTable!=0 ); - if( (pCol = pTable->aCol)!=0 ){ - for(i=0; inCol; i++, pCol++){ - sqlite3DbFree(db, pCol->zName); - sqlite3ExprDelete(db, pCol->pDflt); - sqlite3DbFree(db, pCol->zDflt); - sqlite3DbFree(db, pCol->zType); - sqlite3DbFree(db, pCol->zColl); - } - sqlite3DbFree(db, pTable->aCol); - } -} - -/* -** Remove the memory data structures associated with the given -** Table. No changes are made to disk by this routine. -** -** This routine just deletes the data structure. It does not unlink -** the table data structure from the hash table. But it does destroy -** memory structures of the indices and foreign keys associated with -** the table. -*/ -void sqlite3DeleteTable(sqlite3 *db, Table *pTable){ - Index *pIndex, *pNext; - - assert( !pTable || pTable->nRef>0 ); - - /* Do not delete the table until the reference count reaches zero. */ - if( !pTable ) return; - if( ((!db || db->pnBytesFreed==0) && (--pTable->nRef)>0) ) return; - - /* Delete all indices associated with this table. */ - for(pIndex = pTable->pIndex; pIndex; pIndex=pNext){ - pNext = pIndex->pNext; - assert( pIndex->pSchema==pTable->pSchema ); - if( !db || db->pnBytesFreed==0 ){ - char *zName = pIndex->zName; - TESTONLY ( Index *pOld = ) sqlite3HashInsert( - &pIndex->pSchema->idxHash, zName, sqlite3Strlen30(zName), 0 - ); - assert( db==0 || sqlite3SchemaMutexHeld(db, 0, pIndex->pSchema) ); - assert( pOld==pIndex || pOld==0 ); - } - freeIndex(db, pIndex); - } - - /* Delete any foreign keys attached to this table. */ - sqlite3FkDelete(db, pTable); - - /* Delete the Table structure itself. - */ - sqliteDeleteColumnNames(db, pTable); - sqlite3DbFree(db, pTable->zName); - sqlite3DbFree(db, pTable->zColAff); - sqlite3SelectDelete(db, pTable->pSelect); -#ifndef SQLITE_OMIT_CHECK - sqlite3ExprDelete(db, pTable->pCheck); -#endif -#ifndef SQLITE_OMIT_VIRTUALTABLE - sqlite3VtabClear(db, pTable); -#endif - sqlite3DbFree(db, pTable); -} - -/* -** Unlink the given table from the hash tables and the delete the -** table structure with all its indices and foreign keys. -*/ -void sqlite3UnlinkAndDeleteTable(sqlite3 *db, int iDb, const char *zTabName){ - Table *p; - Db *pDb; - - assert( db!=0 ); - assert( iDb>=0 && iDbnDb ); - assert( zTabName ); - assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); - testcase( zTabName[0]==0 ); /* Zero-length table names are allowed */ - pDb = &db->aDb[iDb]; - p = sqlite3HashInsert(&pDb->pSchema->tblHash, zTabName, - sqlite3Strlen30(zTabName),0); - sqlite3DeleteTable(db, p); - db->flags |= SQLITE_InternChanges; -} - -/* -** Given a token, return a string that consists of the text of that -** token. Space to hold the returned string -** is obtained from sqliteMalloc() and must be freed by the calling -** function. -** -** Any quotation marks (ex: "name", 'name', [name], or `name`) that -** surround the body of the token are removed. -** -** Tokens are often just pointers into the original SQL text and so -** are not \000 terminated and are not persistent. The returned string -** is \000 terminated and is persistent. -*/ -char *sqlite3NameFromToken(sqlite3 *db, Token *pName){ - char *zName; - if( pName ){ - zName = sqlite3DbStrNDup(db, (char*)pName->z, pName->n); - sqlite3Dequote(zName); - }else{ - zName = 0; - } - return zName; -} - -/* -** Open the sqlite_master table stored in database number iDb for -** writing. The table is opened using cursor 0. -*/ -void sqlite3OpenMasterTable(Parse *p, int iDb){ - Vdbe *v = sqlite3GetVdbe(p); - sqlite3TableLock(p, iDb, MASTER_ROOT, 1, SCHEMA_TABLE(iDb)); - sqlite3VdbeAddOp3(v, OP_OpenWrite, 0, MASTER_ROOT, iDb); - sqlite3VdbeChangeP4(v, -1, (char *)5, P4_INT32); /* 5 column table */ - if( p->nTab==0 ){ - p->nTab = 1; - } -} - -/* -** Parameter zName points to a nul-terminated buffer containing the name -** of a database ("main", "temp" or the name of an attached db). This -** function returns the index of the named database in db->aDb[], or -** -1 if the named db cannot be found. -*/ -int sqlite3FindDbName(sqlite3 *db, const char *zName){ - int i = -1; /* Database number */ - if( zName ){ - Db *pDb; - int n = sqlite3Strlen30(zName); - for(i=(db->nDb-1), pDb=&db->aDb[i]; i>=0; i--, pDb--){ - if( (!OMIT_TEMPDB || i!=1 ) && n==sqlite3Strlen30(pDb->zName) && - 0==sqlite3StrICmp(pDb->zName, zName) ){ - break; - } - } - } - return i; -} - -/* -** The token *pName contains the name of a database (either "main" or -** "temp" or the name of an attached db). This routine returns the -** index of the named database in db->aDb[], or -1 if the named db -** does not exist. -*/ -int sqlite3FindDb(sqlite3 *db, Token *pName){ - int i; /* Database number */ - char *zName; /* Name we are searching for */ - zName = sqlite3NameFromToken(db, pName); - i = sqlite3FindDbName(db, zName); - sqlite3DbFree(db, zName); - return i; -} - -/* The table or view or trigger name is passed to this routine via tokens -** pName1 and pName2. If the table name was fully qualified, for example: -** -** CREATE TABLE xxx.yyy (...); -** -** Then pName1 is set to "xxx" and pName2 "yyy". On the other hand if -** the table name is not fully qualified, i.e.: -** -** CREATE TABLE yyy(...); -** -** Then pName1 is set to "yyy" and pName2 is "". -** -** This routine sets the *ppUnqual pointer to point at the token (pName1 or -** pName2) that stores the unqualified table name. The index of the -** database "xxx" is returned. -*/ -int sqlite3TwoPartName( - Parse *pParse, /* Parsing and code generating context */ - Token *pName1, /* The "xxx" in the name "xxx.yyy" or "xxx" */ - Token *pName2, /* The "yyy" in the name "xxx.yyy" */ - Token **pUnqual /* Write the unqualified object name here */ -){ - int iDb; /* Database holding the object */ - sqlite3 *db = pParse->db; - - if( ALWAYS(pName2!=0) && pName2->n>0 ){ - if( db->init.busy ) { - sqlite3ErrorMsg(pParse, "corrupt database"); - pParse->nErr++; - return -1; - } - *pUnqual = pName2; - iDb = sqlite3FindDb(db, pName1); - if( iDb<0 ){ - sqlite3ErrorMsg(pParse, "unknown database %T", pName1); - pParse->nErr++; - return -1; - } - }else{ - assert( db->init.iDb==0 || db->init.busy ); - iDb = db->init.iDb; - *pUnqual = pName1; - } - return iDb; -} - -/* -** This routine is used to check if the UTF-8 string zName is a legal -** unqualified name for a new schema object (table, index, view or -** trigger). All names are legal except those that begin with the string -** "sqlite_" (in upper, lower or mixed case). This portion of the namespace -** is reserved for internal use. -*/ -int sqlite3CheckObjectName(Parse *pParse, const char *zName){ - if( !pParse->db->init.busy && pParse->nested==0 - && (pParse->db->flags & SQLITE_WriteSchema)==0 - && 0==sqlite3StrNICmp(zName, "sqlite_", 7) ){ - sqlite3ErrorMsg(pParse, "object name reserved for internal use: %s", zName); - return SQLITE_ERROR; - } - return SQLITE_OK; -} - -/* -** Begin constructing a new table representation in memory. This is -** the first of several action routines that get called in response -** to a CREATE TABLE statement. In particular, this routine is called -** after seeing tokens "CREATE" and "TABLE" and the table name. The isTemp -** flag is true if the table should be stored in the auxiliary database -** file instead of in the main database file. This is normally the case -** when the "TEMP" or "TEMPORARY" keyword occurs in between -** CREATE and TABLE. -** -** The new table record is initialized and put in pParse->pNewTable. -** As more of the CREATE TABLE statement is parsed, additional action -** routines will be called to add more information to this record. -** At the end of the CREATE TABLE statement, the sqlite3EndTable() routine -** is called to complete the construction of the new table record. -*/ -void sqlite3StartTable( - Parse *pParse, /* Parser context */ - Token *pName1, /* First part of the name of the table or view */ - Token *pName2, /* Second part of the name of the table or view */ - int isTemp, /* True if this is a TEMP table */ - int isView, /* True if this is a VIEW */ - int isVirtual, /* True if this is a VIRTUAL table */ - int noErr /* Do nothing if table already exists */ -){ - Table *pTable; - char *zName = 0; /* The name of the new table */ - sqlite3 *db = pParse->db; - Vdbe *v; - int iDb; /* Database number to create the table in */ - Token *pName; /* Unqualified name of the table to create */ - - /* The table or view name to create is passed to this routine via tokens - ** pName1 and pName2. If the table name was fully qualified, for example: - ** - ** CREATE TABLE xxx.yyy (...); - ** - ** Then pName1 is set to "xxx" and pName2 "yyy". On the other hand if - ** the table name is not fully qualified, i.e.: - ** - ** CREATE TABLE yyy(...); - ** - ** Then pName1 is set to "yyy" and pName2 is "". - ** - ** The call below sets the pName pointer to point at the token (pName1 or - ** pName2) that stores the unqualified table name. The variable iDb is - ** set to the index of the database that the table or view is to be - ** created in. - */ - iDb = sqlite3TwoPartName(pParse, pName1, pName2, &pName); - if( iDb<0 ) return; - if( !OMIT_TEMPDB && isTemp && pName2->n>0 && iDb!=1 ){ - /* If creating a temp table, the name may not be qualified. Unless - ** the database name is "temp" anyway. */ - sqlite3ErrorMsg(pParse, "temporary table name must be unqualified"); - return; - } - if( !OMIT_TEMPDB && isTemp ) iDb = 1; - - pParse->sNameToken = *pName; - zName = sqlite3NameFromToken(db, pName); - if( zName==0 ) return; - if( SQLITE_OK!=sqlite3CheckObjectName(pParse, zName) ){ - goto begin_table_error; - } - if( db->init.iDb==1 ) isTemp = 1; -#ifndef SQLITE_OMIT_AUTHORIZATION - assert( (isTemp & 1)==isTemp ); - { - int code; - char *zDb = db->aDb[iDb].zName; - if( sqlite3AuthCheck(pParse, SQLITE_INSERT, SCHEMA_TABLE(isTemp), 0, zDb) ){ - goto begin_table_error; - } - if( isView ){ - if( !OMIT_TEMPDB && isTemp ){ - code = SQLITE_CREATE_TEMP_VIEW; - }else{ - code = SQLITE_CREATE_VIEW; - } - }else{ - if( !OMIT_TEMPDB && isTemp ){ - code = SQLITE_CREATE_TEMP_TABLE; - }else{ - code = SQLITE_CREATE_TABLE; - } - } - if( !isVirtual && sqlite3AuthCheck(pParse, code, zName, 0, zDb) ){ - goto begin_table_error; - } - } -#endif - - /* Make sure the new table name does not collide with an existing - ** index or table name in the same database. Issue an error message if - ** it does. The exception is if the statement being parsed was passed - ** to an sqlite3_declare_vtab() call. In that case only the column names - ** and types will be used, so there is no need to test for namespace - ** collisions. - */ - if( !IN_DECLARE_VTAB ){ - char *zDb = db->aDb[iDb].zName; - if( SQLITE_OK!=sqlite3ReadSchema(pParse) ){ - goto begin_table_error; - } - pTable = sqlite3FindTable(db, zName, zDb); - if( pTable ){ - if( !noErr ){ - sqlite3ErrorMsg(pParse, "table %T already exists", pName); - }else{ - assert( !db->init.busy ); - sqlite3CodeVerifySchema(pParse, iDb); - } - goto begin_table_error; - } - if( sqlite3FindIndex(db, zName, zDb)!=0 ){ - sqlite3ErrorMsg(pParse, "there is already an index named %s", zName); - goto begin_table_error; - } - } - - pTable = sqlite3DbMallocZero(db, sizeof(Table)); - if( pTable==0 ){ - db->mallocFailed = 1; - pParse->rc = SQLITE_NOMEM; - pParse->nErr++; - goto begin_table_error; - } - pTable->zName = zName; - pTable->iPKey = -1; - pTable->pSchema = db->aDb[iDb].pSchema; - pTable->nRef = 1; - pTable->nRowEst = 1000000; - assert( pParse->pNewTable==0 ); - pParse->pNewTable = pTable; - - /* If this is the magic sqlite_sequence table used by autoincrement, - ** then record a pointer to this table in the main database structure - ** so that INSERT can find the table easily. - */ -#ifndef SQLITE_OMIT_AUTOINCREMENT - if( !pParse->nested && strcmp(zName, "sqlite_sequence")==0 ){ - assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); - pTable->pSchema->pSeqTab = pTable; - } -#endif - - /* Begin generating the code that will insert the table record into - ** the SQLITE_MASTER table. Note in particular that we must go ahead - ** and allocate the record number for the table entry now. Before any - ** PRIMARY KEY or UNIQUE keywords are parsed. Those keywords will cause - ** indices to be created and the table record must come before the - ** indices. Hence, the record number for the table must be allocated - ** now. - */ - if( !db->init.busy && (v = sqlite3GetVdbe(pParse))!=0 ){ - int j1; - int fileFormat; - int reg1, reg2, reg3; - sqlite3BeginWriteOperation(pParse, 0, iDb); - -#ifndef SQLITE_OMIT_VIRTUALTABLE - if( isVirtual ){ - sqlite3VdbeAddOp0(v, OP_VBegin); - } -#endif - - /* If the file format and encoding in the database have not been set, - ** set them now. - */ - reg1 = pParse->regRowid = ++pParse->nMem; - reg2 = pParse->regRoot = ++pParse->nMem; - reg3 = ++pParse->nMem; - sqlite3VdbeAddOp3(v, OP_ReadCookie, iDb, reg3, BTREE_FILE_FORMAT); - sqlite3VdbeUsesBtree(v, iDb); - j1 = sqlite3VdbeAddOp1(v, OP_If, reg3); - fileFormat = (db->flags & SQLITE_LegacyFileFmt)!=0 ? - 1 : SQLITE_MAX_FILE_FORMAT; - sqlite3VdbeAddOp2(v, OP_Integer, fileFormat, reg3); - sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_FILE_FORMAT, reg3); - sqlite3VdbeAddOp2(v, OP_Integer, ENC(db), reg3); - sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_TEXT_ENCODING, reg3); - sqlite3VdbeJumpHere(v, j1); - - /* This just creates a place-holder record in the sqlite_master table. - ** The record created does not contain anything yet. It will be replaced - ** by the real entry in code generated at sqlite3EndTable(). - ** - ** The rowid for the new entry is left in register pParse->regRowid. - ** The root page number of the new table is left in reg pParse->regRoot. - ** The rowid and root page number values are needed by the code that - ** sqlite3EndTable will generate. - */ -#if !defined(SQLITE_OMIT_VIEW) || !defined(SQLITE_OMIT_VIRTUALTABLE) - if( isView || isVirtual ){ - sqlite3VdbeAddOp2(v, OP_Integer, 0, reg2); - }else -#endif - { - sqlite3VdbeAddOp2(v, OP_CreateTable, iDb, reg2); - } - sqlite3OpenMasterTable(pParse, iDb); - sqlite3VdbeAddOp2(v, OP_NewRowid, 0, reg1); - sqlite3VdbeAddOp2(v, OP_Null, 0, reg3); - sqlite3VdbeAddOp3(v, OP_Insert, 0, reg3, reg1); - sqlite3VdbeChangeP5(v, OPFLAG_APPEND); - sqlite3VdbeAddOp0(v, OP_Close); - } - - /* Normal (non-error) return. */ - return; - - /* If an error occurs, we jump here */ -begin_table_error: - sqlite3DbFree(db, zName); - return; -} - -/* -** This macro is used to compare two strings in a case-insensitive manner. -** It is slightly faster than calling sqlite3StrICmp() directly, but -** produces larger code. -** -** WARNING: This macro is not compatible with the strcmp() family. It -** returns true if the two strings are equal, otherwise false. -*/ -#define STRICMP(x, y) (\ -sqlite3UpperToLower[*(unsigned char *)(x)]== \ -sqlite3UpperToLower[*(unsigned char *)(y)] \ -&& sqlite3StrICmp((x)+1,(y)+1)==0 ) - -/* -** Add a new column to the table currently being constructed. -** -** The parser calls this routine once for each column declaration -** in a CREATE TABLE statement. sqlite3StartTable() gets called -** first to get things going. Then this routine is called for each -** column. -*/ -void sqlite3AddColumn(Parse *pParse, Token *pName){ - Table *p; - int i; - char *z; - Column *pCol; - sqlite3 *db = pParse->db; - if( (p = pParse->pNewTable)==0 ) return; -#if SQLITE_MAX_COLUMN - if( p->nCol+1>db->aLimit[SQLITE_LIMIT_COLUMN] ){ - sqlite3ErrorMsg(pParse, "too many columns on %s", p->zName); - return; - } -#endif - z = sqlite3NameFromToken(db, pName); - if( z==0 ) return; - for(i=0; inCol; i++){ - if( STRICMP(z, p->aCol[i].zName) ){ - sqlite3ErrorMsg(pParse, "duplicate column name: %s", z); - sqlite3DbFree(db, z); - return; - } - } - if( (p->nCol & 0x7)==0 ){ - Column *aNew; - aNew = sqlite3DbRealloc(db,p->aCol,(p->nCol+8)*sizeof(p->aCol[0])); - if( aNew==0 ){ - sqlite3DbFree(db, z); - return; - } - p->aCol = aNew; - } - pCol = &p->aCol[p->nCol]; - memset(pCol, 0, sizeof(p->aCol[0])); - pCol->zName = z; - - /* If there is no type specified, columns have the default affinity - ** 'NONE'. If there is a type specified, then sqlite3AddColumnType() will - ** be called next to set pCol->affinity correctly. - */ - pCol->affinity = SQLITE_AFF_NONE; - p->nCol++; -} - -/* -** This routine is called by the parser while in the middle of -** parsing a CREATE TABLE statement. A "NOT NULL" constraint has -** been seen on a column. This routine sets the notNull flag on -** the column currently under construction. -*/ -void sqlite3AddNotNull(Parse *pParse, int onError){ - Table *p; - p = pParse->pNewTable; - if( p==0 || NEVER(p->nCol<1) ) return; - p->aCol[p->nCol-1].notNull = (u8)onError; -} - -/* -** Scan the column type name zType (length nType) and return the -** associated affinity type. -** -** This routine does a case-independent search of zType for the -** substrings in the following table. If one of the substrings is -** found, the corresponding affinity is returned. If zType contains -** more than one of the substrings, entries toward the top of -** the table take priority. For example, if zType is 'BLOBINT', -** SQLITE_AFF_INTEGER is returned. -** -** Substring | Affinity -** -------------------------------- -** 'INT' | SQLITE_AFF_INTEGER -** 'CHAR' | SQLITE_AFF_TEXT -** 'CLOB' | SQLITE_AFF_TEXT -** 'TEXT' | SQLITE_AFF_TEXT -** 'BLOB' | SQLITE_AFF_NONE -** 'REAL' | SQLITE_AFF_REAL -** 'FLOA' | SQLITE_AFF_REAL -** 'DOUB' | SQLITE_AFF_REAL -** -** If none of the substrings in the above table are found, -** SQLITE_AFF_NUMERIC is returned. -*/ -char sqlite3AffinityType(const char *zIn){ - u32 h = 0; - char aff = SQLITE_AFF_NUMERIC; - - if( zIn ) while( zIn[0] ){ - h = (h<<8) + sqlite3UpperToLower[(*zIn)&0xff]; - zIn++; - if( h==(('c'<<24)+('h'<<16)+('a'<<8)+'r') ){ /* CHAR */ - aff = SQLITE_AFF_TEXT; - }else if( h==(('c'<<24)+('l'<<16)+('o'<<8)+'b') ){ /* CLOB */ - aff = SQLITE_AFF_TEXT; - }else if( h==(('t'<<24)+('e'<<16)+('x'<<8)+'t') ){ /* TEXT */ - aff = SQLITE_AFF_TEXT; - }else if( h==(('b'<<24)+('l'<<16)+('o'<<8)+'b') /* BLOB */ - && (aff==SQLITE_AFF_NUMERIC || aff==SQLITE_AFF_REAL) ){ - aff = SQLITE_AFF_NONE; -#ifndef SQLITE_OMIT_FLOATING_POINT - }else if( h==(('r'<<24)+('e'<<16)+('a'<<8)+'l') /* REAL */ - && aff==SQLITE_AFF_NUMERIC ){ - aff = SQLITE_AFF_REAL; - }else if( h==(('f'<<24)+('l'<<16)+('o'<<8)+'a') /* FLOA */ - && aff==SQLITE_AFF_NUMERIC ){ - aff = SQLITE_AFF_REAL; - }else if( h==(('d'<<24)+('o'<<16)+('u'<<8)+'b') /* DOUB */ - && aff==SQLITE_AFF_NUMERIC ){ - aff = SQLITE_AFF_REAL; -#endif - }else if( (h&0x00FFFFFF)==(('i'<<16)+('n'<<8)+'t') ){ /* INT */ - aff = SQLITE_AFF_INTEGER; - break; - } - } - - return aff; -} - -/* -** This routine is called by the parser while in the middle of -** parsing a CREATE TABLE statement. The pFirst token is the first -** token in the sequence of tokens that describe the type of the -** column currently under construction. pLast is the last token -** in the sequence. Use this information to construct a string -** that contains the typename of the column and store that string -** in zType. -*/ -void sqlite3AddColumnType(Parse *pParse, Token *pType){ - Table *p; - Column *pCol; - - p = pParse->pNewTable; - if( p==0 || NEVER(p->nCol<1) ) return; - pCol = &p->aCol[p->nCol-1]; - assert( pCol->zType==0 ); - pCol->zType = sqlite3NameFromToken(pParse->db, pType); - pCol->affinity = sqlite3AffinityType(pCol->zType); -} - -/* -** The expression is the default value for the most recently added column -** of the table currently under construction. -** -** Default value expressions must be constant. Raise an exception if this -** is not the case. -** -** This routine is called by the parser while in the middle of -** parsing a CREATE TABLE statement. -*/ -void sqlite3AddDefaultValue(Parse *pParse, ExprSpan *pSpan){ - Table *p; - Column *pCol; - sqlite3 *db = pParse->db; - p = pParse->pNewTable; - if( p!=0 ){ - pCol = &(p->aCol[p->nCol-1]); - if( !sqlite3ExprIsConstantOrFunction(pSpan->pExpr) ){ - sqlite3ErrorMsg(pParse, "default value of column [%s] is not constant", - pCol->zName); - }else{ - /* A copy of pExpr is used instead of the original, as pExpr contains - ** tokens that point to volatile memory. The 'span' of the expression - ** is required by pragma table_info. - */ - sqlite3ExprDelete(db, pCol->pDflt); - pCol->pDflt = sqlite3ExprDup(db, pSpan->pExpr, EXPRDUP_REDUCE); - sqlite3DbFree(db, pCol->zDflt); - pCol->zDflt = sqlite3DbStrNDup(db, (char*)pSpan->zStart, - (int)(pSpan->zEnd - pSpan->zStart)); - } - } - sqlite3ExprDelete(db, pSpan->pExpr); -} - -/* -** Designate the PRIMARY KEY for the table. pList is a list of names -** of columns that form the primary key. If pList is NULL, then the -** most recently added column of the table is the primary key. -** -** A table can have at most one primary key. If the table already has -** a primary key (and this is the second primary key) then create an -** error. -** -** If the PRIMARY KEY is on a single column whose datatype is INTEGER, -** then we will try to use that column as the rowid. Set the Table.iPKey -** field of the table under construction to be the index of the -** INTEGER PRIMARY KEY column. Table.iPKey is set to -1 if there is -** no INTEGER PRIMARY KEY. -** -** If the key is not an INTEGER PRIMARY KEY, then create a unique -** index for the key. No index is created for INTEGER PRIMARY KEYs. -*/ -void sqlite3AddPrimaryKey( - Parse *pParse, /* Parsing context */ - ExprList *pList, /* List of field names to be indexed */ - int onError, /* What to do with a uniqueness conflict */ - int autoInc, /* True if the AUTOINCREMENT keyword is present */ - int sortOrder /* SQLITE_SO_ASC or SQLITE_SO_DESC */ -){ - Table *pTab = pParse->pNewTable; - char *zType = 0; - int iCol = -1, i; - if( pTab==0 || IN_DECLARE_VTAB ) goto primary_key_exit; - if( pTab->tabFlags & TF_HasPrimaryKey ){ - sqlite3ErrorMsg(pParse, - "table \"%s\" has more than one primary key", pTab->zName); - goto primary_key_exit; - } - pTab->tabFlags |= TF_HasPrimaryKey; - if( pList==0 ){ - iCol = pTab->nCol - 1; - pTab->aCol[iCol].isPrimKey = 1; - }else{ - for(i=0; inExpr; i++){ - for(iCol=0; iColnCol; iCol++){ - if( sqlite3StrICmp(pList->a[i].zName, pTab->aCol[iCol].zName)==0 ){ - break; - } - } - if( iColnCol ){ - pTab->aCol[iCol].isPrimKey = 1; - } - } - if( pList->nExpr>1 ) iCol = -1; - } - if( iCol>=0 && iColnCol ){ - zType = pTab->aCol[iCol].zType; - } - if( zType && sqlite3StrICmp(zType, "INTEGER")==0 - && sortOrder==SQLITE_SO_ASC ){ - pTab->iPKey = iCol; - pTab->keyConf = (u8)onError; - assert( autoInc==0 || autoInc==1 ); - pTab->tabFlags |= autoInc*TF_Autoincrement; - }else if( autoInc ){ -#ifndef SQLITE_OMIT_AUTOINCREMENT - sqlite3ErrorMsg(pParse, "AUTOINCREMENT is only allowed on an " - "INTEGER PRIMARY KEY"); -#endif - }else{ - Index *p; - p = sqlite3CreateIndex(pParse, 0, 0, 0, pList, onError, 0, 0, sortOrder, 0); - if( p ){ - p->autoIndex = 2; - } - pList = 0; - } - -primary_key_exit: - sqlite3ExprListDelete(pParse->db, pList); - return; -} - -/* -** Add a new CHECK constraint to the table currently under construction. -*/ -void sqlite3AddCheckConstraint( - Parse *pParse, /* Parsing context */ - Expr *pCheckExpr /* The check expression */ -){ - sqlite3 *db = pParse->db; -#ifndef SQLITE_OMIT_CHECK - Table *pTab = pParse->pNewTable; - if( pTab && !IN_DECLARE_VTAB ){ - pTab->pCheck = sqlite3ExprAnd(db, pTab->pCheck, pCheckExpr); - }else -#endif - { - sqlite3ExprDelete(db, pCheckExpr); - } -} - -/* -** Set the collation function of the most recently parsed table column -** to the CollSeq given. -*/ -void sqlite3AddCollateType(Parse *pParse, Token *pToken){ - Table *p; - int i; - char *zColl; /* Dequoted name of collation sequence */ - sqlite3 *db; - - if( (p = pParse->pNewTable)==0 ) return; - i = p->nCol-1; - db = pParse->db; - zColl = sqlite3NameFromToken(db, pToken); - if( !zColl ) return; - - if( sqlite3LocateCollSeq(pParse, zColl) ){ - Index *pIdx; - p->aCol[i].zColl = zColl; - - /* If the column is declared as " PRIMARY KEY COLLATE ", - ** then an index may have been created on this column before the - ** collation type was added. Correct this if it is the case. - */ - for(pIdx=p->pIndex; pIdx; pIdx=pIdx->pNext){ - assert( pIdx->nColumn==1 ); - if( pIdx->aiColumn[0]==i ){ - pIdx->azColl[0] = p->aCol[i].zColl; - } - } - }else{ - sqlite3DbFree(db, zColl); - } -} - -/* -** This function returns the collation sequence for database native text -** encoding identified by the string zName, length nName. -** -** If the requested collation sequence is not available, or not available -** in the database native encoding, the collation factory is invoked to -** request it. If the collation factory does not supply such a sequence, -** and the sequence is available in another text encoding, then that is -** returned instead. -** -** If no versions of the requested collations sequence are available, or -** another error occurs, NULL is returned and an error message written into -** pParse. -** -** This routine is a wrapper around sqlite3FindCollSeq(). This routine -** invokes the collation factory if the named collation cannot be found -** and generates an error message. -** -** See also: sqlite3FindCollSeq(), sqlite3GetCollSeq() -*/ -CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char *zName){ - sqlite3 *db = pParse->db; - u8 enc = ENC(db); - u8 initbusy = db->init.busy; - CollSeq *pColl; - - pColl = sqlite3FindCollSeq(db, enc, zName, initbusy); - if( !initbusy && (!pColl || !pColl->xCmp) ){ - pColl = sqlite3GetCollSeq(db, enc, pColl, zName); - if( !pColl ){ - sqlite3ErrorMsg(pParse, "no such collation sequence: %s", zName); - } - } - - return pColl; -} - - -/* -** Generate code that will increment the schema cookie. -** -** The schema cookie is used to determine when the schema for the -** database changes. After each schema change, the cookie value -** changes. When a process first reads the schema it records the -** cookie. Thereafter, whenever it goes to access the database, -** it checks the cookie to make sure the schema has not changed -** since it was last read. -** -** This plan is not completely bullet-proof. It is possible for -** the schema to change multiple times and for the cookie to be -** set back to prior value. But schema changes are infrequent -** and the probability of hitting the same cookie value is only -** 1 chance in 2^32. So we're safe enough. -*/ -void sqlite3ChangeCookie(Parse *pParse, int iDb){ - int r1 = sqlite3GetTempReg(pParse); - sqlite3 *db = pParse->db; - Vdbe *v = pParse->pVdbe; - assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); - sqlite3VdbeAddOp2(v, OP_Integer, db->aDb[iDb].pSchema->schema_cookie+1, r1); - sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_SCHEMA_VERSION, r1); - sqlite3ReleaseTempReg(pParse, r1); -} - -/* -** Measure the number of characters needed to output the given -** identifier. The number returned includes any quotes used -** but does not include the null terminator. -** -** The estimate is conservative. It might be larger that what is -** really needed. -*/ -static int identLength(const char *z){ - int n; - for(n=0; *z; n++, z++){ - if( *z=='"' ){ n++; } - } - return n + 2; -} - -/* -** The first parameter is a pointer to an output buffer. The second -** parameter is a pointer to an integer that contains the offset at -** which to write into the output buffer. This function copies the -** nul-terminated string pointed to by the third parameter, zSignedIdent, -** to the specified offset in the buffer and updates *pIdx to refer -** to the first byte after the last byte written before returning. -** -** If the string zSignedIdent consists entirely of alpha-numeric -** characters, does not begin with a digit and is not an SQL keyword, -** then it is copied to the output buffer exactly as it is. Otherwise, -** it is quoted using double-quotes. -*/ -static void identPut(char *z, int *pIdx, char *zSignedIdent){ - unsigned char *zIdent = (unsigned char*)zSignedIdent; - int i, j, needQuote; - i = *pIdx; - - for(j=0; zIdent[j]; j++){ - if( !sqlite3Isalnum(zIdent[j]) && zIdent[j]!='_' ) break; - } - needQuote = sqlite3Isdigit(zIdent[0]) || sqlite3KeywordCode(zIdent, j)!=TK_ID; - if( !needQuote ){ - needQuote = zIdent[j]; - } - - if( needQuote ) z[i++] = '"'; - for(j=0; zIdent[j]; j++){ - z[i++] = zIdent[j]; - if( zIdent[j]=='"' ) z[i++] = '"'; - } - if( needQuote ) z[i++] = '"'; - z[i] = 0; - *pIdx = i; -} - -/* -** Generate a CREATE TABLE statement appropriate for the given -** table. Memory to hold the text of the statement is obtained -** from sqliteMalloc() and must be freed by the calling function. -*/ -static char *createTableStmt(sqlite3 *db, Table *p){ - int i, k, n; - char *zStmt; - char *zSep, *zSep2, *zEnd; - Column *pCol; - n = 0; - for(pCol = p->aCol, i=0; inCol; i++, pCol++){ - n += identLength(pCol->zName) + 5; - } - n += identLength(p->zName); - if( n<50 ){ - zSep = ""; - zSep2 = ","; - zEnd = ")"; - }else{ - zSep = "\n "; - zSep2 = ",\n "; - zEnd = "\n)"; - } - n += 35 + 6*p->nCol; - zStmt = sqlite3DbMallocRaw(0, n); - if( zStmt==0 ){ - db->mallocFailed = 1; - return 0; - } - sqlite3_snprintf(n, zStmt, "CREATE TABLE "); - k = sqlite3Strlen30(zStmt); - identPut(zStmt, &k, p->zName); - zStmt[k++] = '('; - for(pCol=p->aCol, i=0; inCol; i++, pCol++){ - static const char * const azType[] = { - /* SQLITE_AFF_TEXT */ " TEXT", - /* SQLITE_AFF_NONE */ "", - /* SQLITE_AFF_NUMERIC */ " NUM", - /* SQLITE_AFF_INTEGER */ " INT", - /* SQLITE_AFF_REAL */ " REAL" - }; - int len; - const char *zType; - - sqlite3_snprintf(n-k, &zStmt[k], zSep); - k += sqlite3Strlen30(&zStmt[k]); - zSep = zSep2; - identPut(zStmt, &k, pCol->zName); - assert( pCol->affinity-SQLITE_AFF_TEXT >= 0 ); - assert( pCol->affinity-SQLITE_AFF_TEXT < ArraySize(azType) ); - testcase( pCol->affinity==SQLITE_AFF_TEXT ); - testcase( pCol->affinity==SQLITE_AFF_NONE ); - testcase( pCol->affinity==SQLITE_AFF_NUMERIC ); - testcase( pCol->affinity==SQLITE_AFF_INTEGER ); - testcase( pCol->affinity==SQLITE_AFF_REAL ); - - zType = azType[pCol->affinity - SQLITE_AFF_TEXT]; - len = sqlite3Strlen30(zType); - assert( pCol->affinity==SQLITE_AFF_NONE - || pCol->affinity==sqlite3AffinityType(zType) ); - memcpy(&zStmt[k], zType, len); - k += len; - assert( k<=n ); - } - sqlite3_snprintf(n-k, &zStmt[k], "%s", zEnd); - return zStmt; -} - -/* -** This routine is called to report the final ")" that terminates -** a CREATE TABLE statement. -** -** The table structure that other action routines have been building -** is added to the internal hash tables, assuming no errors have -** occurred. -** -** An entry for the table is made in the master table on disk, unless -** this is a temporary table or db->init.busy==1. When db->init.busy==1 -** it means we are reading the sqlite_master table because we just -** connected to the database or because the sqlite_master table has -** recently changed, so the entry for this table already exists in -** the sqlite_master table. We do not want to create it again. -** -** If the pSelect argument is not NULL, it means that this routine -** was called to create a table generated from a -** "CREATE TABLE ... AS SELECT ..." statement. The column names of -** the new table will match the result set of the SELECT. -*/ -void sqlite3EndTable( - Parse *pParse, /* Parse context */ - Token *pCons, /* The ',' token after the last column defn. */ - Token *pEnd, /* The final ')' token in the CREATE TABLE */ - Select *pSelect /* Select from a "CREATE ... AS SELECT" */ -){ - Table *p; - sqlite3 *db = pParse->db; - int iDb; - - if( (pEnd==0 && pSelect==0) || db->mallocFailed ){ - return; - } - p = pParse->pNewTable; - if( p==0 ) return; - - assert( !db->init.busy || !pSelect ); - - iDb = sqlite3SchemaToIndex(db, p->pSchema); - -#ifndef SQLITE_OMIT_CHECK - /* Resolve names in all CHECK constraint expressions. - */ - if( p->pCheck ){ - SrcList sSrc; /* Fake SrcList for pParse->pNewTable */ - NameContext sNC; /* Name context for pParse->pNewTable */ - - memset(&sNC, 0, sizeof(sNC)); - memset(&sSrc, 0, sizeof(sSrc)); - sSrc.nSrc = 1; - sSrc.a[0].zName = p->zName; - sSrc.a[0].pTab = p; - sSrc.a[0].iCursor = -1; - sNC.pParse = pParse; - sNC.pSrcList = &sSrc; - sNC.isCheck = 1; - if( sqlite3ResolveExprNames(&sNC, p->pCheck) ){ - return; - } - } -#endif /* !defined(SQLITE_OMIT_CHECK) */ - - /* If the db->init.busy is 1 it means we are reading the SQL off the - ** "sqlite_master" or "sqlite_temp_master" table on the disk. - ** So do not write to the disk again. Extract the root page number - ** for the table from the db->init.newTnum field. (The page number - ** should have been put there by the sqliteOpenCb routine.) - */ - if( db->init.busy ){ - p->tnum = db->init.newTnum; - } - - /* If not initializing, then create a record for the new table - ** in the SQLITE_MASTER table of the database. - ** - ** If this is a TEMPORARY table, write the entry into the auxiliary - ** file instead of into the main database file. - */ - if( !db->init.busy ){ - int n; - Vdbe *v; - char *zType; /* "view" or "table" */ - char *zType2; /* "VIEW" or "TABLE" */ - char *zStmt; /* Text of the CREATE TABLE or CREATE VIEW statement */ - - v = sqlite3GetVdbe(pParse); - if( NEVER(v==0) ) return; - - sqlite3VdbeAddOp1(v, OP_Close, 0); - - /* - ** Initialize zType for the new view or table. - */ - if( p->pSelect==0 ){ - /* A regular table */ - zType = "table"; - zType2 = "TABLE"; -#ifndef SQLITE_OMIT_VIEW - }else{ - /* A view */ - zType = "view"; - zType2 = "VIEW"; -#endif - } - - /* If this is a CREATE TABLE xx AS SELECT ..., execute the SELECT - ** statement to populate the new table. The root-page number for the - ** new table is in register pParse->regRoot. - ** - ** Once the SELECT has been coded by sqlite3Select(), it is in a - ** suitable state to query for the column names and types to be used - ** by the new table. - ** - ** A shared-cache write-lock is not required to write to the new table, - ** as a schema-lock must have already been obtained to create it. Since - ** a schema-lock excludes all other database users, the write-lock would - ** be redundant. - */ - if( pSelect ){ - SelectDest dest; - Table *pSelTab; - - assert(pParse->nTab==1); - sqlite3VdbeAddOp3(v, OP_OpenWrite, 1, pParse->regRoot, iDb); - sqlite3VdbeChangeP5(v, 1); - pParse->nTab = 2; - sqlite3SelectDestInit(&dest, SRT_Table, 1); - sqlite3Select(pParse, pSelect, &dest); - sqlite3VdbeAddOp1(v, OP_Close, 1); - if( pParse->nErr==0 ){ - pSelTab = sqlite3ResultSetOfSelect(pParse, pSelect); - if( pSelTab==0 ) return; - assert( p->aCol==0 ); - p->nCol = pSelTab->nCol; - p->aCol = pSelTab->aCol; - pSelTab->nCol = 0; - pSelTab->aCol = 0; - sqlite3DeleteTable(db, pSelTab); - } - } - - /* Compute the complete text of the CREATE statement */ - if( pSelect ){ - zStmt = createTableStmt(db, p); - }else{ - n = (int)(pEnd->z - pParse->sNameToken.z) + 1; - zStmt = sqlite3MPrintf(db, - "CREATE %s %.*s", zType2, n, pParse->sNameToken.z - ); - } - - /* A slot for the record has already been allocated in the - ** SQLITE_MASTER table. We just need to update that slot with all - ** the information we've collected. - */ - sqlite3NestedParse(pParse, - "UPDATE %Q.%s " - "SET type='%s', name=%Q, tbl_name=%Q, rootpage=#%d, sql=%Q " - "WHERE rowid=#%d", - db->aDb[iDb].zName, SCHEMA_TABLE(iDb), - zType, - p->zName, - p->zName, - pParse->regRoot, - zStmt, - pParse->regRowid - ); - sqlite3DbFree(db, zStmt); - sqlite3ChangeCookie(pParse, iDb); - -#ifndef SQLITE_OMIT_AUTOINCREMENT - /* Check to see if we need to create an sqlite_sequence table for - ** keeping track of autoincrement keys. - */ - if( p->tabFlags & TF_Autoincrement ){ - Db *pDb = &db->aDb[iDb]; - assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); - if( pDb->pSchema->pSeqTab==0 ){ - sqlite3NestedParse(pParse, - "CREATE TABLE %Q.sqlite_sequence(name,seq)", - pDb->zName - ); - } - } -#endif - - /* Reparse everything to update our internal data structures */ - sqlite3VdbeAddParseSchemaOp(v, iDb, - sqlite3MPrintf(db, "tbl_name='%q'", p->zName)); - } - - - /* Add the table to the in-memory representation of the database. - */ - if( db->init.busy ){ - Table *pOld; - Schema *pSchema = p->pSchema; - assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); - pOld = sqlite3HashInsert(&pSchema->tblHash, p->zName, - sqlite3Strlen30(p->zName),p); - if( pOld ){ - assert( p==pOld ); /* Malloc must have failed inside HashInsert() */ - db->mallocFailed = 1; - return; - } - pParse->pNewTable = 0; - db->nTable++; - db->flags |= SQLITE_InternChanges; - -#ifndef SQLITE_OMIT_ALTERTABLE - if( !p->pSelect ){ - const char *zName = (const char *)pParse->sNameToken.z; - int nName; - assert( !pSelect && pCons && pEnd ); - if( pCons->z==0 ){ - pCons = pEnd; - } - nName = (int)((const char *)pCons->z - zName); - p->addColOffset = 13 + sqlite3Utf8CharLen(zName, nName); - } -#endif - } -} - -#ifndef SQLITE_OMIT_VIEW -/* -** The parser calls this routine in order to create a new VIEW -*/ -void sqlite3CreateView( - Parse *pParse, /* The parsing context */ - Token *pBegin, /* The CREATE token that begins the statement */ - Token *pName1, /* The token that holds the name of the view */ - Token *pName2, /* The token that holds the name of the view */ - Select *pSelect, /* A SELECT statement that will become the new view */ - int isTemp, /* TRUE for a TEMPORARY view */ - int noErr /* Suppress error messages if VIEW already exists */ -){ - Table *p; - int n; - const char *z; - Token sEnd; - DbFixer sFix; - Token *pName = 0; - int iDb; - sqlite3 *db = pParse->db; - - if( pParse->nVar>0 ){ - sqlite3ErrorMsg(pParse, "parameters are not allowed in views"); - sqlite3SelectDelete(db, pSelect); - return; - } - sqlite3StartTable(pParse, pName1, pName2, isTemp, 1, 0, noErr); - p = pParse->pNewTable; - if( p==0 || pParse->nErr ){ - sqlite3SelectDelete(db, pSelect); - return; - } - sqlite3TwoPartName(pParse, pName1, pName2, &pName); - iDb = sqlite3SchemaToIndex(db, p->pSchema); - if( sqlite3FixInit(&sFix, pParse, iDb, "view", pName) - && sqlite3FixSelect(&sFix, pSelect) - ){ - sqlite3SelectDelete(db, pSelect); - return; - } - - /* Make a copy of the entire SELECT statement that defines the view. - ** This will force all the Expr.token.z values to be dynamically - ** allocated rather than point to the input string - which means that - ** they will persist after the current sqlite3_exec() call returns. - */ - p->pSelect = sqlite3SelectDup(db, pSelect, EXPRDUP_REDUCE); - sqlite3SelectDelete(db, pSelect); - if( db->mallocFailed ){ - return; - } - if( !db->init.busy ){ - sqlite3ViewGetColumnNames(pParse, p); - } - - /* Locate the end of the CREATE VIEW statement. Make sEnd point to - ** the end. - */ - sEnd = pParse->sLastToken; - if( ALWAYS(sEnd.z[0]!=0) && sEnd.z[0]!=';' ){ - sEnd.z += sEnd.n; - } - sEnd.n = 0; - n = (int)(sEnd.z - pBegin->z); - z = pBegin->z; - while( ALWAYS(n>0) && sqlite3Isspace(z[n-1]) ){ n--; } - sEnd.z = &z[n-1]; - sEnd.n = 1; - - /* Use sqlite3EndTable() to add the view to the SQLITE_MASTER table */ - sqlite3EndTable(pParse, 0, &sEnd, 0); - return; -} -#endif /* SQLITE_OMIT_VIEW */ - -#if !defined(SQLITE_OMIT_VIEW) || !defined(SQLITE_OMIT_VIRTUALTABLE) -/* -** The Table structure pTable is really a VIEW. Fill in the names of -** the columns of the view in the pTable structure. Return the number -** of errors. If an error is seen leave an error message in pParse->zErrMsg. -*/ -int sqlite3ViewGetColumnNames(Parse *pParse, Table *pTable){ - Table *pSelTab; /* A fake table from which we get the result set */ - Select *pSel; /* Copy of the SELECT that implements the view */ - int nErr = 0; /* Number of errors encountered */ - int n; /* Temporarily holds the number of cursors assigned */ - sqlite3 *db = pParse->db; /* Database connection for malloc errors */ - int (*xAuth)(void*,int,const char*,const char*,const char*,const char*); - - assert( pTable ); - -#ifndef SQLITE_OMIT_VIRTUALTABLE - if( sqlite3VtabCallConnect(pParse, pTable) ){ - return SQLITE_ERROR; - } - if( IsVirtual(pTable) ) return 0; -#endif - -#ifndef SQLITE_OMIT_VIEW - /* A positive nCol means the columns names for this view are - ** already known. - */ - if( pTable->nCol>0 ) return 0; - - /* A negative nCol is a special marker meaning that we are currently - ** trying to compute the column names. If we enter this routine with - ** a negative nCol, it means two or more views form a loop, like this: - ** - ** CREATE VIEW one AS SELECT * FROM two; - ** CREATE VIEW two AS SELECT * FROM one; - ** - ** Actually, the error above is now caught prior to reaching this point. - ** But the following test is still important as it does come up - ** in the following: - ** - ** CREATE TABLE main.ex1(a); - ** CREATE TEMP VIEW ex1 AS SELECT a FROM ex1; - ** SELECT * FROM temp.ex1; - */ - if( pTable->nCol<0 ){ - sqlite3ErrorMsg(pParse, "view %s is circularly defined", pTable->zName); - return 1; - } - assert( pTable->nCol>=0 ); - - /* If we get this far, it means we need to compute the table names. - ** Note that the call to sqlite3ResultSetOfSelect() will expand any - ** "*" elements in the results set of the view and will assign cursors - ** to the elements of the FROM clause. But we do not want these changes - ** to be permanent. So the computation is done on a copy of the SELECT - ** statement that defines the view. - */ - assert( pTable->pSelect ); - pSel = sqlite3SelectDup(db, pTable->pSelect, 0); - if( pSel ){ - u8 enableLookaside = db->lookaside.bEnabled; - n = pParse->nTab; - sqlite3SrcListAssignCursors(pParse, pSel->pSrc); - pTable->nCol = -1; - db->lookaside.bEnabled = 0; -#ifndef SQLITE_OMIT_AUTHORIZATION - xAuth = db->xAuth; - db->xAuth = 0; - pSelTab = sqlite3ResultSetOfSelect(pParse, pSel); - db->xAuth = xAuth; -#else - pSelTab = sqlite3ResultSetOfSelect(pParse, pSel); -#endif - db->lookaside.bEnabled = enableLookaside; - pParse->nTab = n; - if( pSelTab ){ - assert( pTable->aCol==0 ); - pTable->nCol = pSelTab->nCol; - pTable->aCol = pSelTab->aCol; - pSelTab->nCol = 0; - pSelTab->aCol = 0; - sqlite3DeleteTable(db, pSelTab); - assert( sqlite3SchemaMutexHeld(db, 0, pTable->pSchema) ); - pTable->pSchema->flags |= DB_UnresetViews; - }else{ - pTable->nCol = 0; - nErr++; - } - sqlite3SelectDelete(db, pSel); - } else { - nErr++; - } -#endif /* SQLITE_OMIT_VIEW */ - return nErr; -} -#endif /* !defined(SQLITE_OMIT_VIEW) || !defined(SQLITE_OMIT_VIRTUALTABLE) */ - -#ifndef SQLITE_OMIT_VIEW -/* -** Clear the column names from every VIEW in database idx. -*/ -static void sqliteViewResetAll(sqlite3 *db, int idx){ - HashElem *i; - assert( sqlite3SchemaMutexHeld(db, idx, 0) ); - if( !DbHasProperty(db, idx, DB_UnresetViews) ) return; - for(i=sqliteHashFirst(&db->aDb[idx].pSchema->tblHash); i;i=sqliteHashNext(i)){ - Table *pTab = sqliteHashData(i); - if( pTab->pSelect ){ - sqliteDeleteColumnNames(db, pTab); - pTab->aCol = 0; - pTab->nCol = 0; - } - } - DbClearProperty(db, idx, DB_UnresetViews); -} -#else -# define sqliteViewResetAll(A,B) -#endif /* SQLITE_OMIT_VIEW */ - -/* -** This function is called by the VDBE to adjust the internal schema -** used by SQLite when the btree layer moves a table root page. The -** root-page of a table or index in database iDb has changed from iFrom -** to iTo. -** -** Ticket #1728: The symbol table might still contain information -** on tables and/or indices that are the process of being deleted. -** If you are unlucky, one of those deleted indices or tables might -** have the same rootpage number as the real table or index that is -** being moved. So we cannot stop searching after the first match -** because the first match might be for one of the deleted indices -** or tables and not the table/index that is actually being moved. -** We must continue looping until all tables and indices with -** rootpage==iFrom have been converted to have a rootpage of iTo -** in order to be certain that we got the right one. -*/ -#ifndef SQLITE_OMIT_AUTOVACUUM -void sqlite3RootPageMoved(sqlite3 *db, int iDb, int iFrom, int iTo){ - HashElem *pElem; - Hash *pHash; - Db *pDb; - - assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); - pDb = &db->aDb[iDb]; - pHash = &pDb->pSchema->tblHash; - for(pElem=sqliteHashFirst(pHash); pElem; pElem=sqliteHashNext(pElem)){ - Table *pTab = sqliteHashData(pElem); - if( pTab->tnum==iFrom ){ - pTab->tnum = iTo; - } - } - pHash = &pDb->pSchema->idxHash; - for(pElem=sqliteHashFirst(pHash); pElem; pElem=sqliteHashNext(pElem)){ - Index *pIdx = sqliteHashData(pElem); - if( pIdx->tnum==iFrom ){ - pIdx->tnum = iTo; - } - } -} -#endif - -/* -** Write code to erase the table with root-page iTable from database iDb. -** Also write code to modify the sqlite_master table and internal schema -** if a root-page of another table is moved by the btree-layer whilst -** erasing iTable (this can happen with an auto-vacuum database). -*/ -static void destroyRootPage(Parse *pParse, int iTable, int iDb){ - Vdbe *v = sqlite3GetVdbe(pParse); - int r1 = sqlite3GetTempReg(pParse); - sqlite3VdbeAddOp3(v, OP_Destroy, iTable, r1, iDb); - sqlite3MayAbort(pParse); -#ifndef SQLITE_OMIT_AUTOVACUUM - /* OP_Destroy stores an in integer r1. If this integer - ** is non-zero, then it is the root page number of a table moved to - ** location iTable. The following code modifies the sqlite_master table to - ** reflect this. - ** - ** The "#NNN" in the SQL is a special constant that means whatever value - ** is in register NNN. See grammar rules associated with the TK_REGISTER - ** token for additional information. - */ - sqlite3NestedParse(pParse, - "UPDATE %Q.%s SET rootpage=%d WHERE #%d AND rootpage=#%d", - pParse->db->aDb[iDb].zName, SCHEMA_TABLE(iDb), iTable, r1, r1); -#endif - sqlite3ReleaseTempReg(pParse, r1); -} - -/* -** Write VDBE code to erase table pTab and all associated indices on disk. -** Code to update the sqlite_master tables and internal schema definitions -** in case a root-page belonging to another table is moved by the btree layer -** is also added (this can happen with an auto-vacuum database). -*/ -static void destroyTable(Parse *pParse, Table *pTab){ -#ifdef SQLITE_OMIT_AUTOVACUUM - Index *pIdx; - int iDb = sqlite3SchemaToIndex(pParse->db, pTab->pSchema); - destroyRootPage(pParse, pTab->tnum, iDb); - for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ - destroyRootPage(pParse, pIdx->tnum, iDb); - } -#else - /* If the database may be auto-vacuum capable (if SQLITE_OMIT_AUTOVACUUM - ** is not defined), then it is important to call OP_Destroy on the - ** table and index root-pages in order, starting with the numerically - ** largest root-page number. This guarantees that none of the root-pages - ** to be destroyed is relocated by an earlier OP_Destroy. i.e. if the - ** following were coded: - ** - ** OP_Destroy 4 0 - ** ... - ** OP_Destroy 5 0 - ** - ** and root page 5 happened to be the largest root-page number in the - ** database, then root page 5 would be moved to page 4 by the - ** "OP_Destroy 4 0" opcode. The subsequent "OP_Destroy 5 0" would hit - ** a free-list page. - */ - int iTab = pTab->tnum; - int iDestroyed = 0; - - while( 1 ){ - Index *pIdx; - int iLargest = 0; - - if( iDestroyed==0 || iTabpIndex; pIdx; pIdx=pIdx->pNext){ - int iIdx = pIdx->tnum; - assert( pIdx->pSchema==pTab->pSchema ); - if( (iDestroyed==0 || (iIdxiLargest ){ - iLargest = iIdx; - } - } - if( iLargest==0 ){ - return; - }else{ - int iDb = sqlite3SchemaToIndex(pParse->db, pTab->pSchema); - destroyRootPage(pParse, iLargest, iDb); - iDestroyed = iLargest; - } - } -#endif -} - -/* -** Remove entries from the sqlite_statN tables (for N in (1,2,3)) -** after a DROP INDEX or DROP TABLE command. -*/ -static void sqlite3ClearStatTables( - Parse *pParse, /* The parsing context */ - int iDb, /* The database number */ - const char *zType, /* "idx" or "tbl" */ - const char *zName /* Name of index or table */ -){ - int i; - const char *zDbName = pParse->db->aDb[iDb].zName; - for(i=1; i<=3; i++){ - char zTab[24]; - sqlite3_snprintf(sizeof(zTab),zTab,"sqlite_stat%d",i); - if( sqlite3FindTable(pParse->db, zTab, zDbName) ){ - sqlite3NestedParse(pParse, - "DELETE FROM %Q.%s WHERE %s=%Q", - zDbName, zTab, zType, zName - ); - } - } -} - -/* -** Generate code to drop a table. -*/ -void sqlite3CodeDropTable(Parse *pParse, Table *pTab, int iDb, int isView){ - Vdbe *v; - sqlite3 *db = pParse->db; - Trigger *pTrigger; - Db *pDb = &db->aDb[iDb]; - - v = sqlite3GetVdbe(pParse); - assert( v!=0 ); - sqlite3BeginWriteOperation(pParse, 1, iDb); - -#ifndef SQLITE_OMIT_VIRTUALTABLE - if( IsVirtual(pTab) ){ - sqlite3VdbeAddOp0(v, OP_VBegin); - } -#endif - - /* Drop all triggers associated with the table being dropped. Code - ** is generated to remove entries from sqlite_master and/or - ** sqlite_temp_master if required. - */ - pTrigger = sqlite3TriggerList(pParse, pTab); - while( pTrigger ){ - assert( pTrigger->pSchema==pTab->pSchema || - pTrigger->pSchema==db->aDb[1].pSchema ); - sqlite3DropTriggerPtr(pParse, pTrigger); - pTrigger = pTrigger->pNext; - } - -#ifndef SQLITE_OMIT_AUTOINCREMENT - /* Remove any entries of the sqlite_sequence table associated with - ** the table being dropped. This is done before the table is dropped - ** at the btree level, in case the sqlite_sequence table needs to - ** move as a result of the drop (can happen in auto-vacuum mode). - */ - if( pTab->tabFlags & TF_Autoincrement ){ - sqlite3NestedParse(pParse, - "DELETE FROM %Q.sqlite_sequence WHERE name=%Q", - pDb->zName, pTab->zName - ); - } -#endif - - /* Drop all SQLITE_MASTER table and index entries that refer to the - ** table. The program name loops through the master table and deletes - ** every row that refers to a table of the same name as the one being - ** dropped. Triggers are handled seperately because a trigger can be - ** created in the temp database that refers to a table in another - ** database. - */ - sqlite3NestedParse(pParse, - "DELETE FROM %Q.%s WHERE tbl_name=%Q and type!='trigger'", - pDb->zName, SCHEMA_TABLE(iDb), pTab->zName); - if( !isView && !IsVirtual(pTab) ){ - destroyTable(pParse, pTab); - } - - /* Remove the table entry from SQLite's internal schema and modify - ** the schema cookie. - */ - if( IsVirtual(pTab) ){ - sqlite3VdbeAddOp4(v, OP_VDestroy, iDb, 0, 0, pTab->zName, 0); - } - sqlite3VdbeAddOp4(v, OP_DropTable, iDb, 0, 0, pTab->zName, 0); - sqlite3ChangeCookie(pParse, iDb); - sqliteViewResetAll(db, iDb); -} - -/* -** This routine is called to do the work of a DROP TABLE statement. -** pName is the name of the table to be dropped. -*/ -void sqlite3DropTable(Parse *pParse, SrcList *pName, int isView, int noErr){ - Table *pTab; - Vdbe *v; - sqlite3 *db = pParse->db; - int iDb; - - if( db->mallocFailed ){ - goto exit_drop_table; - } - assert( pParse->nErr==0 ); - assert( pName->nSrc==1 ); - if( noErr ) db->suppressErr++; - pTab = sqlite3LocateTable(pParse, isView, - pName->a[0].zName, pName->a[0].zDatabase); - if( noErr ) db->suppressErr--; - - if( pTab==0 ){ - if( noErr ) sqlite3CodeVerifyNamedSchema(pParse, pName->a[0].zDatabase); - goto exit_drop_table; - } - iDb = sqlite3SchemaToIndex(db, pTab->pSchema); - assert( iDb>=0 && iDbnDb ); - - /* If pTab is a virtual table, call ViewGetColumnNames() to ensure - ** it is initialized. - */ - if( IsVirtual(pTab) && sqlite3ViewGetColumnNames(pParse, pTab) ){ - goto exit_drop_table; - } -#ifndef SQLITE_OMIT_AUTHORIZATION - { - int code; - const char *zTab = SCHEMA_TABLE(iDb); - const char *zDb = db->aDb[iDb].zName; - const char *zArg2 = 0; - if( sqlite3AuthCheck(pParse, SQLITE_DELETE, zTab, 0, zDb)){ - goto exit_drop_table; - } - if( isView ){ - if( !OMIT_TEMPDB && iDb==1 ){ - code = SQLITE_DROP_TEMP_VIEW; - }else{ - code = SQLITE_DROP_VIEW; - } -#ifndef SQLITE_OMIT_VIRTUALTABLE - }else if( IsVirtual(pTab) ){ - code = SQLITE_DROP_VTABLE; - zArg2 = sqlite3GetVTable(db, pTab)->pMod->zName; -#endif - }else{ - if( !OMIT_TEMPDB && iDb==1 ){ - code = SQLITE_DROP_TEMP_TABLE; - }else{ - code = SQLITE_DROP_TABLE; - } - } - if( sqlite3AuthCheck(pParse, code, pTab->zName, zArg2, zDb) ){ - goto exit_drop_table; - } - if( sqlite3AuthCheck(pParse, SQLITE_DELETE, pTab->zName, 0, zDb) ){ - goto exit_drop_table; - } - } -#endif - if( sqlite3StrNICmp(pTab->zName, "sqlite_", 7)==0 - && sqlite3StrNICmp(pTab->zName, "sqlite_stat", 11)!=0 ){ - sqlite3ErrorMsg(pParse, "table %s may not be dropped", pTab->zName); - goto exit_drop_table; - } - -#ifndef SQLITE_OMIT_VIEW - /* Ensure DROP TABLE is not used on a view, and DROP VIEW is not used - ** on a table. - */ - if( isView && pTab->pSelect==0 ){ - sqlite3ErrorMsg(pParse, "use DROP TABLE to delete table %s", pTab->zName); - goto exit_drop_table; - } - if( !isView && pTab->pSelect ){ - sqlite3ErrorMsg(pParse, "use DROP VIEW to delete view %s", pTab->zName); - goto exit_drop_table; - } -#endif - - /* Generate code to remove the table from the master table - ** on disk. - */ - v = sqlite3GetVdbe(pParse); - if( v ){ - sqlite3BeginWriteOperation(pParse, 1, iDb); - sqlite3ClearStatTables(pParse, iDb, "tbl", pTab->zName); - sqlite3FkDropTable(pParse, pName, pTab); - sqlite3CodeDropTable(pParse, pTab, iDb, isView); - } - -exit_drop_table: - sqlite3SrcListDelete(db, pName); -} - -/* -** This routine is called to create a new foreign key on the table -** currently under construction. pFromCol determines which columns -** in the current table point to the foreign key. If pFromCol==0 then -** connect the key to the last column inserted. pTo is the name of -** the table referred to. pToCol is a list of tables in the other -** pTo table that the foreign key points to. flags contains all -** information about the conflict resolution algorithms specified -** in the ON DELETE, ON UPDATE and ON INSERT clauses. -** -** An FKey structure is created and added to the table currently -** under construction in the pParse->pNewTable field. -** -** The foreign key is set for IMMEDIATE processing. A subsequent call -** to sqlite3DeferForeignKey() might change this to DEFERRED. -*/ -void sqlite3CreateForeignKey( - Parse *pParse, /* Parsing context */ - ExprList *pFromCol, /* Columns in this table that point to other table */ - Token *pTo, /* Name of the other table */ - ExprList *pToCol, /* Columns in the other table */ - int flags /* Conflict resolution algorithms. */ -){ - sqlite3 *db = pParse->db; -#ifndef SQLITE_OMIT_FOREIGN_KEY - FKey *pFKey = 0; - FKey *pNextTo; - Table *p = pParse->pNewTable; - int nByte; - int i; - int nCol; - char *z; - - assert( pTo!=0 ); - if( p==0 || IN_DECLARE_VTAB ) goto fk_end; - if( pFromCol==0 ){ - int iCol = p->nCol-1; - if( NEVER(iCol<0) ) goto fk_end; - if( pToCol && pToCol->nExpr!=1 ){ - sqlite3ErrorMsg(pParse, "foreign key on %s" - " should reference only one column of table %T", - p->aCol[iCol].zName, pTo); - goto fk_end; - } - nCol = 1; - }else if( pToCol && pToCol->nExpr!=pFromCol->nExpr ){ - sqlite3ErrorMsg(pParse, - "number of columns in foreign key does not match the number of " - "columns in the referenced table"); - goto fk_end; - }else{ - nCol = pFromCol->nExpr; - } - nByte = sizeof(*pFKey) + (nCol-1)*sizeof(pFKey->aCol[0]) + pTo->n + 1; - if( pToCol ){ - for(i=0; inExpr; i++){ - nByte += sqlite3Strlen30(pToCol->a[i].zName) + 1; - } - } - pFKey = sqlite3DbMallocZero(db, nByte ); - if( pFKey==0 ){ - goto fk_end; - } - pFKey->pFrom = p; - pFKey->pNextFrom = p->pFKey; - z = (char*)&pFKey->aCol[nCol]; - pFKey->zTo = z; - memcpy(z, pTo->z, pTo->n); - z[pTo->n] = 0; - sqlite3Dequote(z); - z += pTo->n+1; - pFKey->nCol = nCol; - if( pFromCol==0 ){ - pFKey->aCol[0].iFrom = p->nCol-1; - }else{ - for(i=0; inCol; j++){ - if( sqlite3StrICmp(p->aCol[j].zName, pFromCol->a[i].zName)==0 ){ - pFKey->aCol[i].iFrom = j; - break; - } - } - if( j>=p->nCol ){ - sqlite3ErrorMsg(pParse, - "unknown column \"%s\" in foreign key definition", - pFromCol->a[i].zName); - goto fk_end; - } - } - } - if( pToCol ){ - for(i=0; ia[i].zName); - pFKey->aCol[i].zCol = z; - memcpy(z, pToCol->a[i].zName, n); - z[n] = 0; - z += n+1; - } - } - pFKey->isDeferred = 0; - pFKey->aAction[0] = (u8)(flags & 0xff); /* ON DELETE action */ - pFKey->aAction[1] = (u8)((flags >> 8 ) & 0xff); /* ON UPDATE action */ - - assert( sqlite3SchemaMutexHeld(db, 0, p->pSchema) ); - pNextTo = (FKey *)sqlite3HashInsert(&p->pSchema->fkeyHash, - pFKey->zTo, sqlite3Strlen30(pFKey->zTo), (void *)pFKey - ); - if( pNextTo==pFKey ){ - db->mallocFailed = 1; - goto fk_end; - } - if( pNextTo ){ - assert( pNextTo->pPrevTo==0 ); - pFKey->pNextTo = pNextTo; - pNextTo->pPrevTo = pFKey; - } - - /* Link the foreign key to the table as the last step. - */ - p->pFKey = pFKey; - pFKey = 0; - -fk_end: - sqlite3DbFree(db, pFKey); -#endif /* !defined(SQLITE_OMIT_FOREIGN_KEY) */ - sqlite3ExprListDelete(db, pFromCol); - sqlite3ExprListDelete(db, pToCol); -} - -/* -** This routine is called when an INITIALLY IMMEDIATE or INITIALLY DEFERRED -** clause is seen as part of a foreign key definition. The isDeferred -** parameter is 1 for INITIALLY DEFERRED and 0 for INITIALLY IMMEDIATE. -** The behavior of the most recently created foreign key is adjusted -** accordingly. -*/ -void sqlite3DeferForeignKey(Parse *pParse, int isDeferred){ -#ifndef SQLITE_OMIT_FOREIGN_KEY - Table *pTab; - FKey *pFKey; - if( (pTab = pParse->pNewTable)==0 || (pFKey = pTab->pFKey)==0 ) return; - assert( isDeferred==0 || isDeferred==1 ); /* EV: R-30323-21917 */ - pFKey->isDeferred = (u8)isDeferred; -#endif -} - -/* -** Generate code that will erase and refill index *pIdx. This is -** used to initialize a newly created index or to recompute the -** content of an index in response to a REINDEX command. -** -** if memRootPage is not negative, it means that the index is newly -** created. The register specified by memRootPage contains the -** root page number of the index. If memRootPage is negative, then -** the index already exists and must be cleared before being refilled and -** the root page number of the index is taken from pIndex->tnum. -*/ -static void sqlite3RefillIndex(Parse *pParse, Index *pIndex, int memRootPage){ - Table *pTab = pIndex->pTable; /* The table that is indexed */ - int iTab = pParse->nTab++; /* Btree cursor used for pTab */ - int iIdx = pParse->nTab++; /* Btree cursor used for pIndex */ - int iSorter; /* Cursor opened by OpenSorter (if in use) */ - int addr1; /* Address of top of loop */ - int addr2; /* Address to jump to for next iteration */ - int tnum; /* Root page of index */ - Vdbe *v; /* Generate code into this virtual machine */ - KeyInfo *pKey; /* KeyInfo for index */ -#ifdef SQLITE_OMIT_MERGE_SORT - int regIdxKey; /* Registers containing the index key */ -#endif - int regRecord; /* Register holding assemblied index record */ - sqlite3 *db = pParse->db; /* The database connection */ - int iDb = sqlite3SchemaToIndex(db, pIndex->pSchema); - -#ifndef SQLITE_OMIT_AUTHORIZATION - if( sqlite3AuthCheck(pParse, SQLITE_REINDEX, pIndex->zName, 0, - db->aDb[iDb].zName ) ){ - return; - } -#endif - - /* Require a write-lock on the table to perform this operation */ - sqlite3TableLock(pParse, iDb, pTab->tnum, 1, pTab->zName); - - v = sqlite3GetVdbe(pParse); - if( v==0 ) return; - if( memRootPage>=0 ){ - tnum = memRootPage; - }else{ - tnum = pIndex->tnum; - sqlite3VdbeAddOp2(v, OP_Clear, tnum, iDb); - } - pKey = sqlite3IndexKeyinfo(pParse, pIndex); - sqlite3VdbeAddOp4(v, OP_OpenWrite, iIdx, tnum, iDb, - (char *)pKey, P4_KEYINFO_HANDOFF); - if( memRootPage>=0 ){ - sqlite3VdbeChangeP5(v, 1); - } - -#ifndef SQLITE_OMIT_MERGE_SORT - /* Open the sorter cursor if we are to use one. */ - iSorter = pParse->nTab++; - sqlite3VdbeAddOp4(v, OP_SorterOpen, iSorter, 0, 0, (char*)pKey, P4_KEYINFO); -#else - iSorter = iTab; -#endif - - /* Open the table. Loop through all rows of the table, inserting index - ** records into the sorter. */ - sqlite3OpenTable(pParse, iTab, iDb, pTab, OP_OpenRead); - addr1 = sqlite3VdbeAddOp2(v, OP_Rewind, iTab, 0); - regRecord = sqlite3GetTempReg(pParse); - -#ifndef SQLITE_OMIT_MERGE_SORT - sqlite3GenerateIndexKey(pParse, pIndex, iTab, regRecord, 1); - sqlite3VdbeAddOp2(v, OP_SorterInsert, iSorter, regRecord); - sqlite3VdbeAddOp2(v, OP_Next, iTab, addr1+1); - sqlite3VdbeJumpHere(v, addr1); - addr1 = sqlite3VdbeAddOp2(v, OP_SorterSort, iSorter, 0); - if( pIndex->onError!=OE_None ){ - int j2 = sqlite3VdbeCurrentAddr(v) + 3; - sqlite3VdbeAddOp2(v, OP_Goto, 0, j2); - addr2 = sqlite3VdbeCurrentAddr(v); - sqlite3VdbeAddOp3(v, OP_SorterCompare, iSorter, j2, regRecord); - sqlite3HaltConstraint( - pParse, OE_Abort, "indexed columns are not unique", P4_STATIC - ); - }else{ - addr2 = sqlite3VdbeCurrentAddr(v); - } - sqlite3VdbeAddOp2(v, OP_SorterData, iSorter, regRecord); - sqlite3VdbeAddOp3(v, OP_IdxInsert, iIdx, regRecord, 1); - sqlite3VdbeChangeP5(v, OPFLAG_USESEEKRESULT); -#else - regIdxKey = sqlite3GenerateIndexKey(pParse, pIndex, iTab, regRecord, 1); - addr2 = addr1 + 1; - if( pIndex->onError!=OE_None ){ - const int regRowid = regIdxKey + pIndex->nColumn; - const int j2 = sqlite3VdbeCurrentAddr(v) + 2; - void * const pRegKey = SQLITE_INT_TO_PTR(regIdxKey); - - /* The registers accessed by the OP_IsUnique opcode were allocated - ** using sqlite3GetTempRange() inside of the sqlite3GenerateIndexKey() - ** call above. Just before that function was freed they were released - ** (made available to the compiler for reuse) using - ** sqlite3ReleaseTempRange(). So in some ways having the OP_IsUnique - ** opcode use the values stored within seems dangerous. However, since - ** we can be sure that no other temp registers have been allocated - ** since sqlite3ReleaseTempRange() was called, it is safe to do so. - */ - sqlite3VdbeAddOp4(v, OP_IsUnique, iIdx, j2, regRowid, pRegKey, P4_INT32); - sqlite3HaltConstraint( - pParse, OE_Abort, "indexed columns are not unique", P4_STATIC); - } - sqlite3VdbeAddOp3(v, OP_IdxInsert, iIdx, regRecord, 0); - sqlite3VdbeChangeP5(v, OPFLAG_USESEEKRESULT); -#endif - sqlite3ReleaseTempReg(pParse, regRecord); - sqlite3VdbeAddOp2(v, OP_SorterNext, iSorter, addr2); - sqlite3VdbeJumpHere(v, addr1); - - sqlite3VdbeAddOp1(v, OP_Close, iTab); - sqlite3VdbeAddOp1(v, OP_Close, iIdx); - sqlite3VdbeAddOp1(v, OP_Close, iSorter); -} - -/* -** Create a new index for an SQL table. pName1.pName2 is the name of the index -** and pTblList is the name of the table that is to be indexed. Both will -** be NULL for a primary key or an index that is created to satisfy a -** UNIQUE constraint. If pTable and pIndex are NULL, use pParse->pNewTable -** as the table to be indexed. pParse->pNewTable is a table that is -** currently being constructed by a CREATE TABLE statement. -** -** pList is a list of columns to be indexed. pList will be NULL if this -** is a primary key or unique-constraint on the most recent column added -** to the table currently under construction. -** -** If the index is created successfully, return a pointer to the new Index -** structure. This is used by sqlite3AddPrimaryKey() to mark the index -** as the tables primary key (Index.autoIndex==2). -*/ -Index *sqlite3CreateIndex( - Parse *pParse, /* All information about this parse */ - Token *pName1, /* First part of index name. May be NULL */ - Token *pName2, /* Second part of index name. May be NULL */ - SrcList *pTblName, /* Table to index. Use pParse->pNewTable if 0 */ - ExprList *pList, /* A list of columns to be indexed */ - int onError, /* OE_Abort, OE_Ignore, OE_Replace, or OE_None */ - Token *pStart, /* The CREATE token that begins this statement */ - Token *pEnd, /* The ")" that closes the CREATE INDEX statement */ - int sortOrder, /* Sort order of primary key when pList==NULL */ - int ifNotExist /* Omit error if index already exists */ -){ - Index *pRet = 0; /* Pointer to return */ - Table *pTab = 0; /* Table to be indexed */ - Index *pIndex = 0; /* The index to be created */ - char *zName = 0; /* Name of the index */ - int nName; /* Number of characters in zName */ - int i, j; - Token nullId; /* Fake token for an empty ID list */ - DbFixer sFix; /* For assigning database names to pTable */ - int sortOrderMask; /* 1 to honor DESC in index. 0 to ignore. */ - sqlite3 *db = pParse->db; - Db *pDb; /* The specific table containing the indexed database */ - int iDb; /* Index of the database that is being written */ - Token *pName = 0; /* Unqualified name of the index to create */ - struct ExprList_item *pListItem; /* For looping over pList */ - int nCol; - int nExtra = 0; - char *zExtra; - - assert( pStart==0 || pEnd!=0 ); /* pEnd must be non-NULL if pStart is */ - assert( pParse->nErr==0 ); /* Never called with prior errors */ - if( db->mallocFailed || IN_DECLARE_VTAB ){ - goto exit_create_index; - } - if( SQLITE_OK!=sqlite3ReadSchema(pParse) ){ - goto exit_create_index; - } - - /* - ** Find the table that is to be indexed. Return early if not found. - */ - if( pTblName!=0 ){ - - /* Use the two-part index name to determine the database - ** to search for the table. 'Fix' the table name to this db - ** before looking up the table. - */ - assert( pName1 && pName2 ); - iDb = sqlite3TwoPartName(pParse, pName1, pName2, &pName); - if( iDb<0 ) goto exit_create_index; - assert( pName && pName->z ); - -#ifndef SQLITE_OMIT_TEMPDB - /* If the index name was unqualified, check if the the table - ** is a temp table. If so, set the database to 1. Do not do this - ** if initialising a database schema. - */ - if( !db->init.busy ){ - pTab = sqlite3SrcListLookup(pParse, pTblName); - if( pName2->n==0 && pTab && pTab->pSchema==db->aDb[1].pSchema ){ - iDb = 1; - } - } -#endif - - if( sqlite3FixInit(&sFix, pParse, iDb, "index", pName) && - sqlite3FixSrcList(&sFix, pTblName) - ){ - /* Because the parser constructs pTblName from a single identifier, - ** sqlite3FixSrcList can never fail. */ - assert(0); - } - pTab = sqlite3LocateTable(pParse, 0, pTblName->a[0].zName, - pTblName->a[0].zDatabase); - if( !pTab || db->mallocFailed ) goto exit_create_index; - assert( db->aDb[iDb].pSchema==pTab->pSchema ); - }else{ - assert( pName==0 ); - assert( pStart==0 ); - pTab = pParse->pNewTable; - if( !pTab ) goto exit_create_index; - iDb = sqlite3SchemaToIndex(db, pTab->pSchema); - } - pDb = &db->aDb[iDb]; - - assert( pTab!=0 ); - assert( pParse->nErr==0 ); - if( sqlite3StrNICmp(pTab->zName, "sqlite_", 7)==0 - && memcmp(&pTab->zName[7],"altertab_",9)!=0 ){ - sqlite3ErrorMsg(pParse, "table %s may not be indexed", pTab->zName); - goto exit_create_index; - } -#ifndef SQLITE_OMIT_VIEW - if( pTab->pSelect ){ - sqlite3ErrorMsg(pParse, "views may not be indexed"); - goto exit_create_index; - } -#endif -#ifndef SQLITE_OMIT_VIRTUALTABLE - if( IsVirtual(pTab) ){ - sqlite3ErrorMsg(pParse, "virtual tables may not be indexed"); - goto exit_create_index; - } -#endif - - /* - ** Find the name of the index. Make sure there is not already another - ** index or table with the same name. - ** - ** Exception: If we are reading the names of permanent indices from the - ** sqlite_master table (because some other process changed the schema) and - ** one of the index names collides with the name of a temporary table or - ** index, then we will continue to process this index. - ** - ** If pName==0 it means that we are - ** dealing with a primary key or UNIQUE constraint. We have to invent our - ** own name. - */ - if( pName ){ - zName = sqlite3NameFromToken(db, pName); - if( zName==0 ) goto exit_create_index; - assert( pName->z!=0 ); - if( SQLITE_OK!=sqlite3CheckObjectName(pParse, zName) ){ - goto exit_create_index; - } - if( !db->init.busy ){ - if( sqlite3FindTable(db, zName, 0)!=0 ){ - sqlite3ErrorMsg(pParse, "there is already a table named %s", zName); - goto exit_create_index; - } - } - if( sqlite3FindIndex(db, zName, pDb->zName)!=0 ){ - if( !ifNotExist ){ - sqlite3ErrorMsg(pParse, "index %s already exists", zName); - }else{ - assert( !db->init.busy ); - sqlite3CodeVerifySchema(pParse, iDb); - } - goto exit_create_index; - } - }else{ - int n; - Index *pLoop; - for(pLoop=pTab->pIndex, n=1; pLoop; pLoop=pLoop->pNext, n++){} - zName = sqlite3MPrintf(db, "sqlite_autoindex_%s_%d", pTab->zName, n); - if( zName==0 ){ - goto exit_create_index; - } - } - - /* Check for authorization to create an index. - */ -#ifndef SQLITE_OMIT_AUTHORIZATION - { - const char *zDb = pDb->zName; - if( sqlite3AuthCheck(pParse, SQLITE_INSERT, SCHEMA_TABLE(iDb), 0, zDb) ){ - goto exit_create_index; - } - i = SQLITE_CREATE_INDEX; - if( !OMIT_TEMPDB && iDb==1 ) i = SQLITE_CREATE_TEMP_INDEX; - if( sqlite3AuthCheck(pParse, i, zName, pTab->zName, zDb) ){ - goto exit_create_index; - } - } -#endif - - /* If pList==0, it means this routine was called to make a primary - ** key out of the last column added to the table under construction. - ** So create a fake list to simulate this. - */ - if( pList==0 ){ - nullId.z = pTab->aCol[pTab->nCol-1].zName; - nullId.n = sqlite3Strlen30((char*)nullId.z); - pList = sqlite3ExprListAppend(pParse, 0, 0); - if( pList==0 ) goto exit_create_index; - sqlite3ExprListSetName(pParse, pList, &nullId, 0); - pList->a[0].sortOrder = (u8)sortOrder; - } - - /* Figure out how many bytes of space are required to store explicitly - ** specified collation sequence names. - */ - for(i=0; inExpr; i++){ - Expr *pExpr = pList->a[i].pExpr; - if( pExpr ){ - CollSeq *pColl = pExpr->pColl; - /* Either pColl!=0 or there was an OOM failure. But if an OOM - ** failure we have quit before reaching this point. */ - if( ALWAYS(pColl) ){ - nExtra += (1 + sqlite3Strlen30(pColl->zName)); - } - } - } - - /* - ** Allocate the index structure. - */ - nName = sqlite3Strlen30(zName); - nCol = pList->nExpr; - pIndex = sqlite3DbMallocZero(db, - sizeof(Index) + /* Index structure */ - sizeof(tRowcnt)*(nCol+1) + /* Index.aiRowEst */ - sizeof(int)*nCol + /* Index.aiColumn */ - sizeof(char *)*nCol + /* Index.azColl */ - sizeof(u8)*nCol + /* Index.aSortOrder */ - nName + 1 + /* Index.zName */ - nExtra /* Collation sequence names */ - ); - if( db->mallocFailed ){ - goto exit_create_index; - } - pIndex->aiRowEst = (tRowcnt*)(&pIndex[1]); - pIndex->azColl = (char**)(&pIndex->aiRowEst[nCol+1]); - pIndex->aiColumn = (int *)(&pIndex->azColl[nCol]); - pIndex->aSortOrder = (u8 *)(&pIndex->aiColumn[nCol]); - pIndex->zName = (char *)(&pIndex->aSortOrder[nCol]); - zExtra = (char *)(&pIndex->zName[nName+1]); - memcpy(pIndex->zName, zName, nName+1); - pIndex->pTable = pTab; - pIndex->nColumn = pList->nExpr; - pIndex->onError = (u8)onError; - pIndex->autoIndex = (u8)(pName==0); - pIndex->pSchema = db->aDb[iDb].pSchema; - assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); - - /* Check to see if we should honor DESC requests on index columns - */ - if( pDb->pSchema->file_format>=4 ){ - sortOrderMask = -1; /* Honor DESC */ - }else{ - sortOrderMask = 0; /* Ignore DESC */ - } - - /* Scan the names of the columns of the table to be indexed and - ** load the column indices into the Index structure. Report an error - ** if any column is not found. - ** - ** TODO: Add a test to make sure that the same column is not named - ** more than once within the same index. Only the first instance of - ** the column will ever be used by the optimizer. Note that using the - ** same column more than once cannot be an error because that would - ** break backwards compatibility - it needs to be a warning. - */ - for(i=0, pListItem=pList->a; inExpr; i++, pListItem++){ - const char *zColName = pListItem->zName; - Column *pTabCol; - int requestedSortOrder; - char *zColl; /* Collation sequence name */ - - for(j=0, pTabCol=pTab->aCol; jnCol; j++, pTabCol++){ - if( sqlite3StrICmp(zColName, pTabCol->zName)==0 ) break; - } - if( j>=pTab->nCol ){ - sqlite3ErrorMsg(pParse, "table %s has no column named %s", - pTab->zName, zColName); - pParse->checkSchema = 1; - goto exit_create_index; - } - pIndex->aiColumn[i] = j; - /* Justification of the ALWAYS(pListItem->pExpr->pColl): Because of - ** the way the "idxlist" non-terminal is constructed by the parser, - ** if pListItem->pExpr is not null then either pListItem->pExpr->pColl - ** must exist or else there must have been an OOM error. But if there - ** was an OOM error, we would never reach this point. */ - if( pListItem->pExpr && ALWAYS(pListItem->pExpr->pColl) ){ - int nColl; - zColl = pListItem->pExpr->pColl->zName; - nColl = sqlite3Strlen30(zColl) + 1; - assert( nExtra>=nColl ); - memcpy(zExtra, zColl, nColl); - zColl = zExtra; - zExtra += nColl; - nExtra -= nColl; - }else{ - zColl = pTab->aCol[j].zColl; - if( !zColl ){ - zColl = db->pDfltColl->zName; - } - } - if( !db->init.busy && !sqlite3LocateCollSeq(pParse, zColl) ){ - goto exit_create_index; - } - pIndex->azColl[i] = zColl; - requestedSortOrder = pListItem->sortOrder & sortOrderMask; - pIndex->aSortOrder[i] = (u8)requestedSortOrder; - } - sqlite3DefaultRowEst(pIndex); - - if( pTab==pParse->pNewTable ){ - /* This routine has been called to create an automatic index as a - ** result of a PRIMARY KEY or UNIQUE clause on a column definition, or - ** a PRIMARY KEY or UNIQUE clause following the column definitions. - ** i.e. one of: - ** - ** CREATE TABLE t(x PRIMARY KEY, y); - ** CREATE TABLE t(x, y, UNIQUE(x, y)); - ** - ** Either way, check to see if the table already has such an index. If - ** so, don't bother creating this one. This only applies to - ** automatically created indices. Users can do as they wish with - ** explicit indices. - ** - ** Two UNIQUE or PRIMARY KEY constraints are considered equivalent - ** (and thus suppressing the second one) even if they have different - ** sort orders. - ** - ** If there are different collating sequences or if the columns of - ** the constraint occur in different orders, then the constraints are - ** considered distinct and both result in separate indices. - */ - Index *pIdx; - for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ - int k; - assert( pIdx->onError!=OE_None ); - assert( pIdx->autoIndex ); - assert( pIndex->onError!=OE_None ); - - if( pIdx->nColumn!=pIndex->nColumn ) continue; - for(k=0; knColumn; k++){ - const char *z1; - const char *z2; - if( pIdx->aiColumn[k]!=pIndex->aiColumn[k] ) break; - z1 = pIdx->azColl[k]; - z2 = pIndex->azColl[k]; - if( z1!=z2 && sqlite3StrICmp(z1, z2) ) break; - } - if( k==pIdx->nColumn ){ - if( pIdx->onError!=pIndex->onError ){ - /* This constraint creates the same index as a previous - ** constraint specified somewhere in the CREATE TABLE statement. - ** However the ON CONFLICT clauses are different. If both this - ** constraint and the previous equivalent constraint have explicit - ** ON CONFLICT clauses this is an error. Otherwise, use the - ** explicitly specified behaviour for the index. - */ - if( !(pIdx->onError==OE_Default || pIndex->onError==OE_Default) ){ - sqlite3ErrorMsg(pParse, - "conflicting ON CONFLICT clauses specified", 0); - } - if( pIdx->onError==OE_Default ){ - pIdx->onError = pIndex->onError; - } - } - goto exit_create_index; - } - } - } - - /* Link the new Index structure to its table and to the other - ** in-memory database structures. - */ - if( db->init.busy ){ - Index *p; - assert( sqlite3SchemaMutexHeld(db, 0, pIndex->pSchema) ); - p = sqlite3HashInsert(&pIndex->pSchema->idxHash, - pIndex->zName, sqlite3Strlen30(pIndex->zName), - pIndex); - if( p ){ - assert( p==pIndex ); /* Malloc must have failed */ - db->mallocFailed = 1; - goto exit_create_index; - } - db->flags |= SQLITE_InternChanges; - if( pTblName!=0 ){ - pIndex->tnum = db->init.newTnum; - } - } - - /* If the db->init.busy is 0 then create the index on disk. This - ** involves writing the index into the master table and filling in the - ** index with the current table contents. - ** - ** The db->init.busy is 0 when the user first enters a CREATE INDEX - ** command. db->init.busy is 1 when a database is opened and - ** CREATE INDEX statements are read out of the master table. In - ** the latter case the index already exists on disk, which is why - ** we don't want to recreate it. - ** - ** If pTblName==0 it means this index is generated as a primary key - ** or UNIQUE constraint of a CREATE TABLE statement. Since the table - ** has just been created, it contains no data and the index initialization - ** step can be skipped. - */ - else{ /* if( db->init.busy==0 ) */ - Vdbe *v; - char *zStmt; - int iMem = ++pParse->nMem; - - v = sqlite3GetVdbe(pParse); - if( v==0 ) goto exit_create_index; - - - /* Create the rootpage for the index - */ - sqlite3BeginWriteOperation(pParse, 1, iDb); - sqlite3VdbeAddOp2(v, OP_CreateIndex, iDb, iMem); - - /* Gather the complete text of the CREATE INDEX statement into - ** the zStmt variable - */ - if( pStart ){ - assert( pEnd!=0 ); - /* A named index with an explicit CREATE INDEX statement */ - zStmt = sqlite3MPrintf(db, "CREATE%s INDEX %.*s", - onError==OE_None ? "" : " UNIQUE", - (int)(pEnd->z - pName->z) + 1, - pName->z); - }else{ - /* An automatic index created by a PRIMARY KEY or UNIQUE constraint */ - /* zStmt = sqlite3MPrintf(""); */ - zStmt = 0; - } - - /* Add an entry in sqlite_master for this index - */ - sqlite3NestedParse(pParse, - "INSERT INTO %Q.%s VALUES('index',%Q,%Q,#%d,%Q);", - db->aDb[iDb].zName, SCHEMA_TABLE(iDb), - pIndex->zName, - pTab->zName, - iMem, - zStmt - ); - sqlite3DbFree(db, zStmt); - - /* Fill the index with data and reparse the schema. Code an OP_Expire - ** to invalidate all pre-compiled statements. - */ - if( pTblName ){ - sqlite3RefillIndex(pParse, pIndex, iMem); - sqlite3ChangeCookie(pParse, iDb); - sqlite3VdbeAddParseSchemaOp(v, iDb, - sqlite3MPrintf(db, "name='%q' AND type='index'", pIndex->zName)); - sqlite3VdbeAddOp1(v, OP_Expire, 0); - } - } - - /* When adding an index to the list of indices for a table, make - ** sure all indices labeled OE_Replace come after all those labeled - ** OE_Ignore. This is necessary for the correct constraint check - ** processing (in sqlite3GenerateConstraintChecks()) as part of - ** UPDATE and INSERT statements. - */ - if( db->init.busy || pTblName==0 ){ - if( onError!=OE_Replace || pTab->pIndex==0 - || pTab->pIndex->onError==OE_Replace){ - pIndex->pNext = pTab->pIndex; - pTab->pIndex = pIndex; - }else{ - Index *pOther = pTab->pIndex; - while( pOther->pNext && pOther->pNext->onError!=OE_Replace ){ - pOther = pOther->pNext; - } - pIndex->pNext = pOther->pNext; - pOther->pNext = pIndex; - } - pRet = pIndex; - pIndex = 0; - } - - /* Clean up before exiting */ -exit_create_index: - if( pIndex ){ - sqlite3DbFree(db, pIndex->zColAff); - sqlite3DbFree(db, pIndex); - } - sqlite3ExprListDelete(db, pList); - sqlite3SrcListDelete(db, pTblName); - sqlite3DbFree(db, zName); - return pRet; -} - -/* -** Fill the Index.aiRowEst[] array with default information - information -** to be used when we have not run the ANALYZE command. -** -** aiRowEst[0] is suppose to contain the number of elements in the index. -** Since we do not know, guess 1 million. aiRowEst[1] is an estimate of the -** number of rows in the table that match any particular value of the -** first column of the index. aiRowEst[2] is an estimate of the number -** of rows that match any particular combiniation of the first 2 columns -** of the index. And so forth. It must always be the case that -* -** aiRowEst[N]<=aiRowEst[N-1] -** aiRowEst[N]>=1 -** -** Apart from that, we have little to go on besides intuition as to -** how aiRowEst[] should be initialized. The numbers generated here -** are based on typical values found in actual indices. -*/ -void sqlite3DefaultRowEst(Index *pIdx){ - tRowcnt *a = pIdx->aiRowEst; - int i; - tRowcnt n; - assert( a!=0 ); - a[0] = pIdx->pTable->nRowEst; - if( a[0]<10 ) a[0] = 10; - n = 10; - for(i=1; i<=pIdx->nColumn; i++){ - a[i] = n; - if( n>5 ) n--; - } - if( pIdx->onError!=OE_None ){ - a[pIdx->nColumn] = 1; - } -} - -/* -** This routine will drop an existing named index. This routine -** implements the DROP INDEX statement. -*/ -void sqlite3DropIndex(Parse *pParse, SrcList *pName, int ifExists){ - Index *pIndex; - Vdbe *v; - sqlite3 *db = pParse->db; - int iDb; - - assert( pParse->nErr==0 ); /* Never called with prior errors */ - if( db->mallocFailed ){ - goto exit_drop_index; - } - assert( pName->nSrc==1 ); - if( SQLITE_OK!=sqlite3ReadSchema(pParse) ){ - goto exit_drop_index; - } - pIndex = sqlite3FindIndex(db, pName->a[0].zName, pName->a[0].zDatabase); - if( pIndex==0 ){ - if( !ifExists ){ - sqlite3ErrorMsg(pParse, "no such index: %S", pName, 0); - }else{ - sqlite3CodeVerifyNamedSchema(pParse, pName->a[0].zDatabase); - } - pParse->checkSchema = 1; - goto exit_drop_index; - } - if( pIndex->autoIndex ){ - sqlite3ErrorMsg(pParse, "index associated with UNIQUE " - "or PRIMARY KEY constraint cannot be dropped", 0); - goto exit_drop_index; - } - iDb = sqlite3SchemaToIndex(db, pIndex->pSchema); -#ifndef SQLITE_OMIT_AUTHORIZATION - { - int code = SQLITE_DROP_INDEX; - Table *pTab = pIndex->pTable; - const char *zDb = db->aDb[iDb].zName; - const char *zTab = SCHEMA_TABLE(iDb); - if( sqlite3AuthCheck(pParse, SQLITE_DELETE, zTab, 0, zDb) ){ - goto exit_drop_index; - } - if( !OMIT_TEMPDB && iDb ) code = SQLITE_DROP_TEMP_INDEX; - if( sqlite3AuthCheck(pParse, code, pIndex->zName, pTab->zName, zDb) ){ - goto exit_drop_index; - } - } -#endif - - /* Generate code to remove the index and from the master table */ - v = sqlite3GetVdbe(pParse); - if( v ){ - sqlite3BeginWriteOperation(pParse, 1, iDb); - sqlite3NestedParse(pParse, - "DELETE FROM %Q.%s WHERE name=%Q AND type='index'", - db->aDb[iDb].zName, SCHEMA_TABLE(iDb), pIndex->zName - ); - sqlite3ClearStatTables(pParse, iDb, "idx", pIndex->zName); - sqlite3ChangeCookie(pParse, iDb); - destroyRootPage(pParse, pIndex->tnum, iDb); - sqlite3VdbeAddOp4(v, OP_DropIndex, iDb, 0, 0, pIndex->zName, 0); - } - -exit_drop_index: - sqlite3SrcListDelete(db, pName); -} - -/* -** pArray is a pointer to an array of objects. Each object in the -** array is szEntry bytes in size. This routine allocates a new -** object on the end of the array. -** -** *pnEntry is the number of entries already in use. *pnAlloc is -** the previously allocated size of the array. initSize is the -** suggested initial array size allocation. -** -** The index of the new entry is returned in *pIdx. -** -** This routine returns a pointer to the array of objects. This -** might be the same as the pArray parameter or it might be a different -** pointer if the array was resized. -*/ -void *sqlite3ArrayAllocate( - sqlite3 *db, /* Connection to notify of malloc failures */ - void *pArray, /* Array of objects. Might be reallocated */ - int szEntry, /* Size of each object in the array */ - int initSize, /* Suggested initial allocation, in elements */ - int *pnEntry, /* Number of objects currently in use */ - int *pnAlloc, /* Current size of the allocation, in elements */ - int *pIdx /* Write the index of a new slot here */ -){ - char *z; - if( *pnEntry >= *pnAlloc ){ - void *pNew; - int newSize; - newSize = (*pnAlloc)*2 + initSize; - pNew = sqlite3DbRealloc(db, pArray, newSize*szEntry); - if( pNew==0 ){ - *pIdx = -1; - return pArray; - } - *pnAlloc = sqlite3DbMallocSize(db, pNew)/szEntry; - pArray = pNew; - } - z = (char*)pArray; - memset(&z[*pnEntry * szEntry], 0, szEntry); - *pIdx = *pnEntry; - ++*pnEntry; - return pArray; -} - -/* -** Append a new element to the given IdList. Create a new IdList if -** need be. -** -** A new IdList is returned, or NULL if malloc() fails. -*/ -IdList *sqlite3IdListAppend(sqlite3 *db, IdList *pList, Token *pToken){ - int i; - if( pList==0 ){ - pList = sqlite3DbMallocZero(db, sizeof(IdList) ); - if( pList==0 ) return 0; - pList->nAlloc = 0; - } - pList->a = sqlite3ArrayAllocate( - db, - pList->a, - sizeof(pList->a[0]), - 5, - &pList->nId, - &pList->nAlloc, - &i - ); - if( i<0 ){ - sqlite3IdListDelete(db, pList); - return 0; - } - pList->a[i].zName = sqlite3NameFromToken(db, pToken); - return pList; -} - -/* -** Delete an IdList. -*/ -void sqlite3IdListDelete(sqlite3 *db, IdList *pList){ - int i; - if( pList==0 ) return; - for(i=0; inId; i++){ - sqlite3DbFree(db, pList->a[i].zName); - } - sqlite3DbFree(db, pList->a); - sqlite3DbFree(db, pList); -} - -/* -** Return the index in pList of the identifier named zId. Return -1 -** if not found. -*/ -int sqlite3IdListIndex(IdList *pList, const char *zName){ - int i; - if( pList==0 ) return -1; - for(i=0; inId; i++){ - if( sqlite3StrICmp(pList->a[i].zName, zName)==0 ) return i; - } - return -1; -} - -/* -** Expand the space allocated for the given SrcList object by -** creating nExtra new slots beginning at iStart. iStart is zero based. -** New slots are zeroed. -** -** For example, suppose a SrcList initially contains two entries: A,B. -** To append 3 new entries onto the end, do this: -** -** sqlite3SrcListEnlarge(db, pSrclist, 3, 2); -** -** After the call above it would contain: A, B, nil, nil, nil. -** If the iStart argument had been 1 instead of 2, then the result -** would have been: A, nil, nil, nil, B. To prepend the new slots, -** the iStart value would be 0. The result then would -** be: nil, nil, nil, A, B. -** -** If a memory allocation fails the SrcList is unchanged. The -** db->mallocFailed flag will be set to true. -*/ -SrcList *sqlite3SrcListEnlarge( - sqlite3 *db, /* Database connection to notify of OOM errors */ - SrcList *pSrc, /* The SrcList to be enlarged */ - int nExtra, /* Number of new slots to add to pSrc->a[] */ - int iStart /* Index in pSrc->a[] of first new slot */ -){ - int i; - - /* Sanity checking on calling parameters */ - assert( iStart>=0 ); - assert( nExtra>=1 ); - assert( pSrc!=0 ); - assert( iStart<=pSrc->nSrc ); - - /* Allocate additional space if needed */ - if( pSrc->nSrc+nExtra>pSrc->nAlloc ){ - SrcList *pNew; - int nAlloc = pSrc->nSrc+nExtra; - int nGot; - pNew = sqlite3DbRealloc(db, pSrc, - sizeof(*pSrc) + (nAlloc-1)*sizeof(pSrc->a[0]) ); - if( pNew==0 ){ - assert( db->mallocFailed ); - return pSrc; - } - pSrc = pNew; - nGot = (sqlite3DbMallocSize(db, pNew) - sizeof(*pSrc))/sizeof(pSrc->a[0])+1; - pSrc->nAlloc = (u16)nGot; - } - - /* Move existing slots that come after the newly inserted slots - ** out of the way */ - for(i=pSrc->nSrc-1; i>=iStart; i--){ - pSrc->a[i+nExtra] = pSrc->a[i]; - } - pSrc->nSrc += (i16)nExtra; - - /* Zero the newly allocated slots */ - memset(&pSrc->a[iStart], 0, sizeof(pSrc->a[0])*nExtra); - for(i=iStart; ia[i].iCursor = -1; - } - - /* Return a pointer to the enlarged SrcList */ - return pSrc; -} - - -/* -** Append a new table name to the given SrcList. Create a new SrcList if -** need be. A new entry is created in the SrcList even if pTable is NULL. -** -** A SrcList is returned, or NULL if there is an OOM error. The returned -** SrcList might be the same as the SrcList that was input or it might be -** a new one. If an OOM error does occurs, then the prior value of pList -** that is input to this routine is automatically freed. -** -** If pDatabase is not null, it means that the table has an optional -** database name prefix. Like this: "database.table". The pDatabase -** points to the table name and the pTable points to the database name. -** The SrcList.a[].zName field is filled with the table name which might -** come from pTable (if pDatabase is NULL) or from pDatabase. -** SrcList.a[].zDatabase is filled with the database name from pTable, -** or with NULL if no database is specified. -** -** In other words, if call like this: -** -** sqlite3SrcListAppend(D,A,B,0); -** -** Then B is a table name and the database name is unspecified. If called -** like this: -** -** sqlite3SrcListAppend(D,A,B,C); -** -** Then C is the table name and B is the database name. If C is defined -** then so is B. In other words, we never have a case where: -** -** sqlite3SrcListAppend(D,A,0,C); -** -** Both pTable and pDatabase are assumed to be quoted. They are dequoted -** before being added to the SrcList. -*/ -SrcList *sqlite3SrcListAppend( - sqlite3 *db, /* Connection to notify of malloc failures */ - SrcList *pList, /* Append to this SrcList. NULL creates a new SrcList */ - Token *pTable, /* Table to append */ - Token *pDatabase /* Database of the table */ -){ - struct SrcList_item *pItem; - assert( pDatabase==0 || pTable!=0 ); /* Cannot have C without B */ - if( pList==0 ){ - pList = sqlite3DbMallocZero(db, sizeof(SrcList) ); - if( pList==0 ) return 0; - pList->nAlloc = 1; - } - pList = sqlite3SrcListEnlarge(db, pList, 1, pList->nSrc); - if( db->mallocFailed ){ - sqlite3SrcListDelete(db, pList); - return 0; - } - pItem = &pList->a[pList->nSrc-1]; - if( pDatabase && pDatabase->z==0 ){ - pDatabase = 0; - } - if( pDatabase ){ - Token *pTemp = pDatabase; - pDatabase = pTable; - pTable = pTemp; - } - pItem->zName = sqlite3NameFromToken(db, pTable); - pItem->zDatabase = sqlite3NameFromToken(db, pDatabase); - return pList; -} - -/* -** Assign VdbeCursor index numbers to all tables in a SrcList -*/ -void sqlite3SrcListAssignCursors(Parse *pParse, SrcList *pList){ - int i; - struct SrcList_item *pItem; - assert(pList || pParse->db->mallocFailed ); - if( pList ){ - for(i=0, pItem=pList->a; inSrc; i++, pItem++){ - if( pItem->iCursor>=0 ) break; - pItem->iCursor = pParse->nTab++; - if( pItem->pSelect ){ - sqlite3SrcListAssignCursors(pParse, pItem->pSelect->pSrc); - } - } - } -} - -/* -** Delete an entire SrcList including all its substructure. -*/ -void sqlite3SrcListDelete(sqlite3 *db, SrcList *pList){ - int i; - struct SrcList_item *pItem; - if( pList==0 ) return; - for(pItem=pList->a, i=0; inSrc; i++, pItem++){ - sqlite3DbFree(db, pItem->zDatabase); - sqlite3DbFree(db, pItem->zName); - sqlite3DbFree(db, pItem->zAlias); - sqlite3DbFree(db, pItem->zIndex); - sqlite3DeleteTable(db, pItem->pTab); - sqlite3SelectDelete(db, pItem->pSelect); - sqlite3ExprDelete(db, pItem->pOn); - sqlite3IdListDelete(db, pItem->pUsing); - } - sqlite3DbFree(db, pList); -} - -/* -** This routine is called by the parser to add a new term to the -** end of a growing FROM clause. The "p" parameter is the part of -** the FROM clause that has already been constructed. "p" is NULL -** if this is the first term of the FROM clause. pTable and pDatabase -** are the name of the table and database named in the FROM clause term. -** pDatabase is NULL if the database name qualifier is missing - the -** usual case. If the term has a alias, then pAlias points to the -** alias token. If the term is a subquery, then pSubquery is the -** SELECT statement that the subquery encodes. The pTable and -** pDatabase parameters are NULL for subqueries. The pOn and pUsing -** parameters are the content of the ON and USING clauses. -** -** Return a new SrcList which encodes is the FROM with the new -** term added. -*/ -SrcList *sqlite3SrcListAppendFromTerm( - Parse *pParse, /* Parsing context */ - SrcList *p, /* The left part of the FROM clause already seen */ - Token *pTable, /* Name of the table to add to the FROM clause */ - Token *pDatabase, /* Name of the database containing pTable */ - Token *pAlias, /* The right-hand side of the AS subexpression */ - Select *pSubquery, /* A subquery used in place of a table name */ - Expr *pOn, /* The ON clause of a join */ - IdList *pUsing /* The USING clause of a join */ -){ - struct SrcList_item *pItem; - sqlite3 *db = pParse->db; - if( !p && (pOn || pUsing) ){ - sqlite3ErrorMsg(pParse, "a JOIN clause is required before %s", - (pOn ? "ON" : "USING") - ); - goto append_from_error; - } - p = sqlite3SrcListAppend(db, p, pTable, pDatabase); - if( p==0 || NEVER(p->nSrc==0) ){ - goto append_from_error; - } - pItem = &p->a[p->nSrc-1]; - assert( pAlias!=0 ); - if( pAlias->n ){ - pItem->zAlias = sqlite3NameFromToken(db, pAlias); - } - pItem->pSelect = pSubquery; - pItem->pOn = pOn; - pItem->pUsing = pUsing; - return p; - - append_from_error: - assert( p==0 ); - sqlite3ExprDelete(db, pOn); - sqlite3IdListDelete(db, pUsing); - sqlite3SelectDelete(db, pSubquery); - return 0; -} - -/* -** Add an INDEXED BY or NOT INDEXED clause to the most recently added -** element of the source-list passed as the second argument. -*/ -void sqlite3SrcListIndexedBy(Parse *pParse, SrcList *p, Token *pIndexedBy){ - assert( pIndexedBy!=0 ); - if( p && ALWAYS(p->nSrc>0) ){ - struct SrcList_item *pItem = &p->a[p->nSrc-1]; - assert( pItem->notIndexed==0 && pItem->zIndex==0 ); - if( pIndexedBy->n==1 && !pIndexedBy->z ){ - /* A "NOT INDEXED" clause was supplied. See parse.y - ** construct "indexed_opt" for details. */ - pItem->notIndexed = 1; - }else{ - pItem->zIndex = sqlite3NameFromToken(pParse->db, pIndexedBy); - } - } -} - -/* -** When building up a FROM clause in the parser, the join operator -** is initially attached to the left operand. But the code generator -** expects the join operator to be on the right operand. This routine -** Shifts all join operators from left to right for an entire FROM -** clause. -** -** Example: Suppose the join is like this: -** -** A natural cross join B -** -** The operator is "natural cross join". The A and B operands are stored -** in p->a[0] and p->a[1], respectively. The parser initially stores the -** operator with A. This routine shifts that operator over to B. -*/ -void sqlite3SrcListShiftJoinType(SrcList *p){ - if( p ){ - int i; - assert( p->a || p->nSrc==0 ); - for(i=p->nSrc-1; i>0; i--){ - p->a[i].jointype = p->a[i-1].jointype; - } - p->a[0].jointype = 0; - } -} - -/* -** Begin a transaction -*/ -void sqlite3BeginTransaction(Parse *pParse, int type){ - sqlite3 *db; - Vdbe *v; - int i; - - assert( pParse!=0 ); - db = pParse->db; - assert( db!=0 ); -/* if( db->aDb[0].pBt==0 ) return; */ - if( sqlite3AuthCheck(pParse, SQLITE_TRANSACTION, "BEGIN", 0, 0) ){ - return; - } - v = sqlite3GetVdbe(pParse); - if( !v ) return; - if( type!=TK_DEFERRED ){ - for(i=0; inDb; i++){ - sqlite3VdbeAddOp2(v, OP_Transaction, i, (type==TK_EXCLUSIVE)+1); - sqlite3VdbeUsesBtree(v, i); - } - } - sqlite3VdbeAddOp2(v, OP_AutoCommit, 0, 0); -} - -/* -** Commit a transaction -*/ -void sqlite3CommitTransaction(Parse *pParse){ - Vdbe *v; - - assert( pParse!=0 ); - assert( pParse->db!=0 ); - if( sqlite3AuthCheck(pParse, SQLITE_TRANSACTION, "COMMIT", 0, 0) ){ - return; - } - v = sqlite3GetVdbe(pParse); - if( v ){ - sqlite3VdbeAddOp2(v, OP_AutoCommit, 1, 0); - } -} - -/* -** Rollback a transaction -*/ -void sqlite3RollbackTransaction(Parse *pParse){ - Vdbe *v; - - assert( pParse!=0 ); - assert( pParse->db!=0 ); - if( sqlite3AuthCheck(pParse, SQLITE_TRANSACTION, "ROLLBACK", 0, 0) ){ - return; - } - v = sqlite3GetVdbe(pParse); - if( v ){ - sqlite3VdbeAddOp2(v, OP_AutoCommit, 1, 1); - } -} - -/* -** This function is called by the parser when it parses a command to create, -** release or rollback an SQL savepoint. -*/ -void sqlite3Savepoint(Parse *pParse, int op, Token *pName){ - char *zName = sqlite3NameFromToken(pParse->db, pName); - if( zName ){ - Vdbe *v = sqlite3GetVdbe(pParse); -#ifndef SQLITE_OMIT_AUTHORIZATION - static const char * const az[] = { "BEGIN", "RELEASE", "ROLLBACK" }; - assert( !SAVEPOINT_BEGIN && SAVEPOINT_RELEASE==1 && SAVEPOINT_ROLLBACK==2 ); -#endif - if( !v || sqlite3AuthCheck(pParse, SQLITE_SAVEPOINT, az[op], zName, 0) ){ - sqlite3DbFree(pParse->db, zName); - return; - } - sqlite3VdbeAddOp4(v, OP_Savepoint, op, 0, 0, zName, P4_DYNAMIC); - } -} - -/* -** Make sure the TEMP database is open and available for use. Return -** the number of errors. Leave any error messages in the pParse structure. -*/ -int sqlite3OpenTempDatabase(Parse *pParse){ - sqlite3 *db = pParse->db; - if( db->aDb[1].pBt==0 && !pParse->explain ){ - int rc; - Btree *pBt; - static const int flags = - SQLITE_OPEN_READWRITE | - SQLITE_OPEN_CREATE | - SQLITE_OPEN_EXCLUSIVE | - SQLITE_OPEN_DELETEONCLOSE | - SQLITE_OPEN_TEMP_DB; - - rc = sqlite3BtreeOpen(db->pVfs, 0, db, &pBt, 0, flags); - if( rc!=SQLITE_OK ){ - sqlite3ErrorMsg(pParse, "unable to open a temporary database " - "file for storing temporary tables"); - pParse->rc = rc; - return 1; - } - db->aDb[1].pBt = pBt; - assert( db->aDb[1].pSchema ); - if( SQLITE_NOMEM==sqlite3BtreeSetPageSize(pBt, db->nextPagesize, -1, 0) ){ - db->mallocFailed = 1; - return 1; - } - } - return 0; -} - -/* -** Generate VDBE code that will verify the schema cookie and start -** a read-transaction for all named database files. -** -** It is important that all schema cookies be verified and all -** read transactions be started before anything else happens in -** the VDBE program. But this routine can be called after much other -** code has been generated. So here is what we do: -** -** The first time this routine is called, we code an OP_Goto that -** will jump to a subroutine at the end of the program. Then we -** record every database that needs its schema verified in the -** pParse->cookieMask field. Later, after all other code has been -** generated, the subroutine that does the cookie verifications and -** starts the transactions will be coded and the OP_Goto P2 value -** will be made to point to that subroutine. The generation of the -** cookie verification subroutine code happens in sqlite3FinishCoding(). -** -** If iDb<0 then code the OP_Goto only - don't set flag to verify the -** schema on any databases. This can be used to position the OP_Goto -** early in the code, before we know if any database tables will be used. -*/ -void sqlite3CodeVerifySchema(Parse *pParse, int iDb){ - Parse *pToplevel = sqlite3ParseToplevel(pParse); - - if( pToplevel->cookieGoto==0 ){ - Vdbe *v = sqlite3GetVdbe(pToplevel); - if( v==0 ) return; /* This only happens if there was a prior error */ - pToplevel->cookieGoto = sqlite3VdbeAddOp2(v, OP_Goto, 0, 0)+1; - } - if( iDb>=0 ){ - sqlite3 *db = pToplevel->db; - yDbMask mask; - - assert( iDbnDb ); - assert( db->aDb[iDb].pBt!=0 || iDb==1 ); - assert( iDbcookieMask & mask)==0 ){ - pToplevel->cookieMask |= mask; - pToplevel->cookieValue[iDb] = db->aDb[iDb].pSchema->schema_cookie; - if( !OMIT_TEMPDB && iDb==1 ){ - sqlite3OpenTempDatabase(pToplevel); - } - } - } -} - -/* -** If argument zDb is NULL, then call sqlite3CodeVerifySchema() for each -** attached database. Otherwise, invoke it for the database named zDb only. -*/ -void sqlite3CodeVerifyNamedSchema(Parse *pParse, const char *zDb){ - sqlite3 *db = pParse->db; - int i; - for(i=0; inDb; i++){ - Db *pDb = &db->aDb[i]; - if( pDb->pBt && (!zDb || 0==sqlite3StrICmp(zDb, pDb->zName)) ){ - sqlite3CodeVerifySchema(pParse, i); - } - } -} - -/* -** Generate VDBE code that prepares for doing an operation that -** might change the database. -** -** This routine starts a new transaction if we are not already within -** a transaction. If we are already within a transaction, then a checkpoint -** is set if the setStatement parameter is true. A checkpoint should -** be set for operations that might fail (due to a constraint) part of -** the way through and which will need to undo some writes without having to -** rollback the whole transaction. For operations where all constraints -** can be checked before any changes are made to the database, it is never -** necessary to undo a write and the checkpoint should not be set. -*/ -void sqlite3BeginWriteOperation(Parse *pParse, int setStatement, int iDb){ - Parse *pToplevel = sqlite3ParseToplevel(pParse); - sqlite3CodeVerifySchema(pParse, iDb); - pToplevel->writeMask |= ((yDbMask)1)<isMultiWrite |= setStatement; -} - -/* -** Indicate that the statement currently under construction might write -** more than one entry (example: deleting one row then inserting another, -** inserting multiple rows in a table, or inserting a row and index entries.) -** If an abort occurs after some of these writes have completed, then it will -** be necessary to undo the completed writes. -*/ -void sqlite3MultiWrite(Parse *pParse){ - Parse *pToplevel = sqlite3ParseToplevel(pParse); - pToplevel->isMultiWrite = 1; -} - -/* -** The code generator calls this routine if is discovers that it is -** possible to abort a statement prior to completion. In order to -** perform this abort without corrupting the database, we need to make -** sure that the statement is protected by a statement transaction. -** -** Technically, we only need to set the mayAbort flag if the -** isMultiWrite flag was previously set. There is a time dependency -** such that the abort must occur after the multiwrite. This makes -** some statements involving the REPLACE conflict resolution algorithm -** go a little faster. But taking advantage of this time dependency -** makes it more difficult to prove that the code is correct (in -** particular, it prevents us from writing an effective -** implementation of sqlite3AssertMayAbort()) and so we have chosen -** to take the safe route and skip the optimization. -*/ -void sqlite3MayAbort(Parse *pParse){ - Parse *pToplevel = sqlite3ParseToplevel(pParse); - pToplevel->mayAbort = 1; -} - -/* -** Code an OP_Halt that causes the vdbe to return an SQLITE_CONSTRAINT -** error. The onError parameter determines which (if any) of the statement -** and/or current transaction is rolled back. -*/ -void sqlite3HaltConstraint(Parse *pParse, int onError, char *p4, int p4type){ - Vdbe *v = sqlite3GetVdbe(pParse); - if( onError==OE_Abort ){ - sqlite3MayAbort(pParse); - } - sqlite3VdbeAddOp4(v, OP_Halt, SQLITE_CONSTRAINT, onError, 0, p4, p4type); -} - -/* -** Check to see if pIndex uses the collating sequence pColl. Return -** true if it does and false if it does not. -*/ -#ifndef SQLITE_OMIT_REINDEX -static int collationMatch(const char *zColl, Index *pIndex){ - int i; - assert( zColl!=0 ); - for(i=0; inColumn; i++){ - const char *z = pIndex->azColl[i]; - assert( z!=0 ); - if( 0==sqlite3StrICmp(z, zColl) ){ - return 1; - } - } - return 0; -} -#endif - -/* -** Recompute all indices of pTab that use the collating sequence pColl. -** If pColl==0 then recompute all indices of pTab. -*/ -#ifndef SQLITE_OMIT_REINDEX -static void reindexTable(Parse *pParse, Table *pTab, char const *zColl){ - Index *pIndex; /* An index associated with pTab */ - - for(pIndex=pTab->pIndex; pIndex; pIndex=pIndex->pNext){ - if( zColl==0 || collationMatch(zColl, pIndex) ){ - int iDb = sqlite3SchemaToIndex(pParse->db, pTab->pSchema); - sqlite3BeginWriteOperation(pParse, 0, iDb); - sqlite3RefillIndex(pParse, pIndex, -1); - } - } -} -#endif - -/* -** Recompute all indices of all tables in all databases where the -** indices use the collating sequence pColl. If pColl==0 then recompute -** all indices everywhere. -*/ -#ifndef SQLITE_OMIT_REINDEX -static void reindexDatabases(Parse *pParse, char const *zColl){ - Db *pDb; /* A single database */ - int iDb; /* The database index number */ - sqlite3 *db = pParse->db; /* The database connection */ - HashElem *k; /* For looping over tables in pDb */ - Table *pTab; /* A table in the database */ - - assert( sqlite3BtreeHoldsAllMutexes(db) ); /* Needed for schema access */ - for(iDb=0, pDb=db->aDb; iDbnDb; iDb++, pDb++){ - assert( pDb!=0 ); - for(k=sqliteHashFirst(&pDb->pSchema->tblHash); k; k=sqliteHashNext(k)){ - pTab = (Table*)sqliteHashData(k); - reindexTable(pParse, pTab, zColl); - } - } -} -#endif - -/* -** Generate code for the REINDEX command. -** -** REINDEX -- 1 -** REINDEX -- 2 -** REINDEX ?.? -- 3 -** REINDEX ?.? -- 4 -** -** Form 1 causes all indices in all attached databases to be rebuilt. -** Form 2 rebuilds all indices in all databases that use the named -** collating function. Forms 3 and 4 rebuild the named index or all -** indices associated with the named table. -*/ -#ifndef SQLITE_OMIT_REINDEX -void sqlite3Reindex(Parse *pParse, Token *pName1, Token *pName2){ - CollSeq *pColl; /* Collating sequence to be reindexed, or NULL */ - char *z; /* Name of a table or index */ - const char *zDb; /* Name of the database */ - Table *pTab; /* A table in the database */ - Index *pIndex; /* An index associated with pTab */ - int iDb; /* The database index number */ - sqlite3 *db = pParse->db; /* The database connection */ - Token *pObjName; /* Name of the table or index to be reindexed */ - - /* Read the database schema. If an error occurs, leave an error message - ** and code in pParse and return NULL. */ - if( SQLITE_OK!=sqlite3ReadSchema(pParse) ){ - return; - } - - if( pName1==0 ){ - reindexDatabases(pParse, 0); - return; - }else if( NEVER(pName2==0) || pName2->z==0 ){ - char *zColl; - assert( pName1->z ); - zColl = sqlite3NameFromToken(pParse->db, pName1); - if( !zColl ) return; - pColl = sqlite3FindCollSeq(db, ENC(db), zColl, 0); - if( pColl ){ - reindexDatabases(pParse, zColl); - sqlite3DbFree(db, zColl); - return; - } - sqlite3DbFree(db, zColl); - } - iDb = sqlite3TwoPartName(pParse, pName1, pName2, &pObjName); - if( iDb<0 ) return; - z = sqlite3NameFromToken(db, pObjName); - if( z==0 ) return; - zDb = db->aDb[iDb].zName; - pTab = sqlite3FindTable(db, z, zDb); - if( pTab ){ - reindexTable(pParse, pTab, 0); - sqlite3DbFree(db, z); - return; - } - pIndex = sqlite3FindIndex(db, z, zDb); - sqlite3DbFree(db, z); - if( pIndex ){ - sqlite3BeginWriteOperation(pParse, 0, iDb); - sqlite3RefillIndex(pParse, pIndex, -1); - return; - } - sqlite3ErrorMsg(pParse, "unable to identify the object to be reindexed"); -} -#endif - -/* -** Return a dynamicly allocated KeyInfo structure that can be used -** with OP_OpenRead or OP_OpenWrite to access database index pIdx. -** -** If successful, a pointer to the new structure is returned. In this case -** the caller is responsible for calling sqlite3DbFree(db, ) on the returned -** pointer. If an error occurs (out of memory or missing collation -** sequence), NULL is returned and the state of pParse updated to reflect -** the error. -*/ -KeyInfo *sqlite3IndexKeyinfo(Parse *pParse, Index *pIdx){ - int i; - int nCol = pIdx->nColumn; - int nBytes = sizeof(KeyInfo) + (nCol-1)*sizeof(CollSeq*) + nCol; - sqlite3 *db = pParse->db; - KeyInfo *pKey = (KeyInfo *)sqlite3DbMallocZero(db, nBytes); - - if( pKey ){ - pKey->db = pParse->db; - pKey->aSortOrder = (u8 *)&(pKey->aColl[nCol]); - assert( &pKey->aSortOrder[nCol]==&(((u8 *)pKey)[nBytes]) ); - for(i=0; iazColl[i]; - assert( zColl ); - pKey->aColl[i] = sqlite3LocateCollSeq(pParse, zColl); - pKey->aSortOrder[i] = pIdx->aSortOrder[i]; - } - pKey->nField = (u16)nCol; - } - - if( pParse->nErr ){ - sqlite3DbFree(db, pKey); - pKey = 0; - } - return pKey; -} diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/callback.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/callback.c deleted file mode 100644 index 1c07355afb..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/callback.c +++ /dev/null @@ -1,457 +0,0 @@ -/* -** 2005 May 23 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** -** This file contains functions used to access the internal hash tables -** of user defined functions and collation sequences. -*/ - -#include "sqliteInt.h" - -/* -** Invoke the 'collation needed' callback to request a collation sequence -** in the encoding enc of name zName, length nName. -*/ -static void callCollNeeded(sqlite3 *db, int enc, const char *zName){ - assert( !db->xCollNeeded || !db->xCollNeeded16 ); - if( db->xCollNeeded ){ - char *zExternal = sqlite3DbStrDup(db, zName); - if( !zExternal ) return; - db->xCollNeeded(db->pCollNeededArg, db, enc, zExternal); - sqlite3DbFree(db, zExternal); - } -#ifndef SQLITE_OMIT_UTF16 - if( db->xCollNeeded16 ){ - char const *zExternal; - sqlite3_value *pTmp = sqlite3ValueNew(db); - sqlite3ValueSetStr(pTmp, -1, zName, SQLITE_UTF8, SQLITE_STATIC); - zExternal = sqlite3ValueText(pTmp, SQLITE_UTF16NATIVE); - if( zExternal ){ - db->xCollNeeded16(db->pCollNeededArg, db, (int)ENC(db), zExternal); - } - sqlite3ValueFree(pTmp); - } -#endif -} - -/* -** This routine is called if the collation factory fails to deliver a -** collation function in the best encoding but there may be other versions -** of this collation function (for other text encodings) available. Use one -** of these instead if they exist. Avoid a UTF-8 <-> UTF-16 conversion if -** possible. -*/ -static int synthCollSeq(sqlite3 *db, CollSeq *pColl){ - CollSeq *pColl2; - char *z = pColl->zName; - int i; - static const u8 aEnc[] = { SQLITE_UTF16BE, SQLITE_UTF16LE, SQLITE_UTF8 }; - for(i=0; i<3; i++){ - pColl2 = sqlite3FindCollSeq(db, aEnc[i], z, 0); - if( pColl2->xCmp!=0 ){ - memcpy(pColl, pColl2, sizeof(CollSeq)); - pColl->xDel = 0; /* Do not copy the destructor */ - return SQLITE_OK; - } - } - return SQLITE_ERROR; -} - -/* -** This function is responsible for invoking the collation factory callback -** or substituting a collation sequence of a different encoding when the -** requested collation sequence is not available in the desired encoding. -** -** If it is not NULL, then pColl must point to the database native encoding -** collation sequence with name zName, length nName. -** -** The return value is either the collation sequence to be used in database -** db for collation type name zName, length nName, or NULL, if no collation -** sequence can be found. -** -** See also: sqlite3LocateCollSeq(), sqlite3FindCollSeq() -*/ -CollSeq *sqlite3GetCollSeq( - sqlite3* db, /* The database connection */ - u8 enc, /* The desired encoding for the collating sequence */ - CollSeq *pColl, /* Collating sequence with native encoding, or NULL */ - const char *zName /* Collating sequence name */ -){ - CollSeq *p; - - p = pColl; - if( !p ){ - p = sqlite3FindCollSeq(db, enc, zName, 0); - } - if( !p || !p->xCmp ){ - /* No collation sequence of this type for this encoding is registered. - ** Call the collation factory to see if it can supply us with one. - */ - callCollNeeded(db, enc, zName); - p = sqlite3FindCollSeq(db, enc, zName, 0); - } - if( p && !p->xCmp && synthCollSeq(db, p) ){ - p = 0; - } - assert( !p || p->xCmp ); - return p; -} - -/* -** This routine is called on a collation sequence before it is used to -** check that it is defined. An undefined collation sequence exists when -** a database is loaded that contains references to collation sequences -** that have not been defined by sqlite3_create_collation() etc. -** -** If required, this routine calls the 'collation needed' callback to -** request a definition of the collating sequence. If this doesn't work, -** an equivalent collating sequence that uses a text encoding different -** from the main database is substituted, if one is available. -*/ -int sqlite3CheckCollSeq(Parse *pParse, CollSeq *pColl){ - if( pColl ){ - const char *zName = pColl->zName; - sqlite3 *db = pParse->db; - CollSeq *p = sqlite3GetCollSeq(db, ENC(db), pColl, zName); - if( !p ){ - sqlite3ErrorMsg(pParse, "no such collation sequence: %s", zName); - pParse->nErr++; - return SQLITE_ERROR; - } - assert( p==pColl ); - } - return SQLITE_OK; -} - - - -/* -** Locate and return an entry from the db.aCollSeq hash table. If the entry -** specified by zName and nName is not found and parameter 'create' is -** true, then create a new entry. Otherwise return NULL. -** -** Each pointer stored in the sqlite3.aCollSeq hash table contains an -** array of three CollSeq structures. The first is the collation sequence -** prefferred for UTF-8, the second UTF-16le, and the third UTF-16be. -** -** Stored immediately after the three collation sequences is a copy of -** the collation sequence name. A pointer to this string is stored in -** each collation sequence structure. -*/ -static CollSeq *findCollSeqEntry( - sqlite3 *db, /* Database connection */ - const char *zName, /* Name of the collating sequence */ - int create /* Create a new entry if true */ -){ - CollSeq *pColl; - int nName = sqlite3Strlen30(zName); - pColl = sqlite3HashFind(&db->aCollSeq, zName, nName); - - if( 0==pColl && create ){ - pColl = sqlite3DbMallocZero(db, 3*sizeof(*pColl) + nName + 1 ); - if( pColl ){ - CollSeq *pDel = 0; - pColl[0].zName = (char*)&pColl[3]; - pColl[0].enc = SQLITE_UTF8; - pColl[1].zName = (char*)&pColl[3]; - pColl[1].enc = SQLITE_UTF16LE; - pColl[2].zName = (char*)&pColl[3]; - pColl[2].enc = SQLITE_UTF16BE; - memcpy(pColl[0].zName, zName, nName); - pColl[0].zName[nName] = 0; - pDel = sqlite3HashInsert(&db->aCollSeq, pColl[0].zName, nName, pColl); - - /* If a malloc() failure occurred in sqlite3HashInsert(), it will - ** return the pColl pointer to be deleted (because it wasn't added - ** to the hash table). - */ - assert( pDel==0 || pDel==pColl ); - if( pDel!=0 ){ - db->mallocFailed = 1; - sqlite3DbFree(db, pDel); - pColl = 0; - } - } - } - return pColl; -} - -/* -** Parameter zName points to a UTF-8 encoded string nName bytes long. -** Return the CollSeq* pointer for the collation sequence named zName -** for the encoding 'enc' from the database 'db'. -** -** If the entry specified is not found and 'create' is true, then create a -** new entry. Otherwise return NULL. -** -** A separate function sqlite3LocateCollSeq() is a wrapper around -** this routine. sqlite3LocateCollSeq() invokes the collation factory -** if necessary and generates an error message if the collating sequence -** cannot be found. -** -** See also: sqlite3LocateCollSeq(), sqlite3GetCollSeq() -*/ -CollSeq *sqlite3FindCollSeq( - sqlite3 *db, - u8 enc, - const char *zName, - int create -){ - CollSeq *pColl; - if( zName ){ - pColl = findCollSeqEntry(db, zName, create); - }else{ - pColl = db->pDfltColl; - } - assert( SQLITE_UTF8==1 && SQLITE_UTF16LE==2 && SQLITE_UTF16BE==3 ); - assert( enc>=SQLITE_UTF8 && enc<=SQLITE_UTF16BE ); - if( pColl ) pColl += enc-1; - return pColl; -} - -/* During the search for the best function definition, this procedure -** is called to test how well the function passed as the first argument -** matches the request for a function with nArg arguments in a system -** that uses encoding enc. The value returned indicates how well the -** request is matched. A higher value indicates a better match. -** -** The returned value is always between 0 and 6, as follows: -** -** 0: Not a match, or if nArg<0 and the function is has no implementation. -** 1: A variable arguments function that prefers UTF-8 when a UTF-16 -** encoding is requested, or vice versa. -** 2: A variable arguments function that uses UTF-16BE when UTF-16LE is -** requested, or vice versa. -** 3: A variable arguments function using the same text encoding. -** 4: A function with the exact number of arguments requested that -** prefers UTF-8 when a UTF-16 encoding is requested, or vice versa. -** 5: A function with the exact number of arguments requested that -** prefers UTF-16LE when UTF-16BE is requested, or vice versa. -** 6: An exact match. -** -*/ -static int matchQuality(FuncDef *p, int nArg, u8 enc){ - int match = 0; - if( p->nArg==-1 || p->nArg==nArg - || (nArg==-1 && (p->xFunc!=0 || p->xStep!=0)) - ){ - match = 1; - if( p->nArg==nArg || nArg==-1 ){ - match = 4; - } - if( enc==p->iPrefEnc ){ - match += 2; - } - else if( (enc==SQLITE_UTF16LE && p->iPrefEnc==SQLITE_UTF16BE) || - (enc==SQLITE_UTF16BE && p->iPrefEnc==SQLITE_UTF16LE) ){ - match += 1; - } - } - return match; -} - -/* -** Search a FuncDefHash for a function with the given name. Return -** a pointer to the matching FuncDef if found, or 0 if there is no match. -*/ -static FuncDef *functionSearch( - FuncDefHash *pHash, /* Hash table to search */ - int h, /* Hash of the name */ - const char *zFunc, /* Name of function */ - int nFunc /* Number of bytes in zFunc */ -){ - FuncDef *p; - for(p=pHash->a[h]; p; p=p->pHash){ - if( sqlite3StrNICmp(p->zName, zFunc, nFunc)==0 && p->zName[nFunc]==0 ){ - return p; - } - } - return 0; -} - -/* -** Insert a new FuncDef into a FuncDefHash hash table. -*/ -void sqlite3FuncDefInsert( - FuncDefHash *pHash, /* The hash table into which to insert */ - FuncDef *pDef /* The function definition to insert */ -){ - FuncDef *pOther; - int nName = sqlite3Strlen30(pDef->zName); - u8 c1 = (u8)pDef->zName[0]; - int h = (sqlite3UpperToLower[c1] + nName) % ArraySize(pHash->a); - pOther = functionSearch(pHash, h, pDef->zName, nName); - if( pOther ){ - assert( pOther!=pDef && pOther->pNext!=pDef ); - pDef->pNext = pOther->pNext; - pOther->pNext = pDef; - }else{ - pDef->pNext = 0; - pDef->pHash = pHash->a[h]; - pHash->a[h] = pDef; - } -} - - - -/* -** Locate a user function given a name, a number of arguments and a flag -** indicating whether the function prefers UTF-16 over UTF-8. Return a -** pointer to the FuncDef structure that defines that function, or return -** NULL if the function does not exist. -** -** If the createFlag argument is true, then a new (blank) FuncDef -** structure is created and liked into the "db" structure if a -** no matching function previously existed. When createFlag is true -** and the nArg parameter is -1, then only a function that accepts -** any number of arguments will be returned. -** -** If createFlag is false and nArg is -1, then the first valid -** function found is returned. A function is valid if either xFunc -** or xStep is non-zero. -** -** If createFlag is false, then a function with the required name and -** number of arguments may be returned even if the eTextRep flag does not -** match that requested. -*/ -FuncDef *sqlite3FindFunction( - sqlite3 *db, /* An open database */ - const char *zName, /* Name of the function. Not null-terminated */ - int nName, /* Number of characters in the name */ - int nArg, /* Number of arguments. -1 means any number */ - u8 enc, /* Preferred text encoding */ - int createFlag /* Create new entry if true and does not otherwise exist */ -){ - FuncDef *p; /* Iterator variable */ - FuncDef *pBest = 0; /* Best match found so far */ - int bestScore = 0; /* Score of best match */ - int h; /* Hash value */ - - - assert( enc==SQLITE_UTF8 || enc==SQLITE_UTF16LE || enc==SQLITE_UTF16BE ); - h = (sqlite3UpperToLower[(u8)zName[0]] + nName) % ArraySize(db->aFunc.a); - - /* First search for a match amongst the application-defined functions. - */ - p = functionSearch(&db->aFunc, h, zName, nName); - while( p ){ - int score = matchQuality(p, nArg, enc); - if( score>bestScore ){ - pBest = p; - bestScore = score; - } - p = p->pNext; - } - - /* If no match is found, search the built-in functions. - ** - ** If the SQLITE_PreferBuiltin flag is set, then search the built-in - ** functions even if a prior app-defined function was found. And give - ** priority to built-in functions. - ** - ** Except, if createFlag is true, that means that we are trying to - ** install a new function. Whatever FuncDef structure is returned it will - ** have fields overwritten with new information appropriate for the - ** new function. But the FuncDefs for built-in functions are read-only. - ** So we must not search for built-ins when creating a new function. - */ - if( !createFlag && (pBest==0 || (db->flags & SQLITE_PreferBuiltin)!=0) ){ - FuncDefHash *pHash = &GLOBAL(FuncDefHash, sqlite3GlobalFunctions); - bestScore = 0; - p = functionSearch(pHash, h, zName, nName); - while( p ){ - int score = matchQuality(p, nArg, enc); - if( score>bestScore ){ - pBest = p; - bestScore = score; - } - p = p->pNext; - } - } - - /* If the createFlag parameter is true and the search did not reveal an - ** exact match for the name, number of arguments and encoding, then add a - ** new entry to the hash table and return it. - */ - if( createFlag && (bestScore<6 || pBest->nArg!=nArg) && - (pBest = sqlite3DbMallocZero(db, sizeof(*pBest)+nName+1))!=0 ){ - pBest->zName = (char *)&pBest[1]; - pBest->nArg = (u16)nArg; - pBest->iPrefEnc = enc; - memcpy(pBest->zName, zName, nName); - pBest->zName[nName] = 0; - sqlite3FuncDefInsert(&db->aFunc, pBest); - } - - if( pBest && (pBest->xStep || pBest->xFunc || createFlag) ){ - return pBest; - } - return 0; -} - -/* -** Free all resources held by the schema structure. The void* argument points -** at a Schema struct. This function does not call sqlite3DbFree(db, ) on the -** pointer itself, it just cleans up subsidiary resources (i.e. the contents -** of the schema hash tables). -** -** The Schema.cache_size variable is not cleared. -*/ -void sqlite3SchemaClear(void *p){ - Hash temp1; - Hash temp2; - HashElem *pElem; - Schema *pSchema = (Schema *)p; - - temp1 = pSchema->tblHash; - temp2 = pSchema->trigHash; - sqlite3HashInit(&pSchema->trigHash); - sqlite3HashClear(&pSchema->idxHash); - for(pElem=sqliteHashFirst(&temp2); pElem; pElem=sqliteHashNext(pElem)){ - sqlite3DeleteTrigger(0, (Trigger*)sqliteHashData(pElem)); - } - sqlite3HashClear(&temp2); - sqlite3HashInit(&pSchema->tblHash); - for(pElem=sqliteHashFirst(&temp1); pElem; pElem=sqliteHashNext(pElem)){ - Table *pTab = sqliteHashData(pElem); - sqlite3DeleteTable(0, pTab); - } - sqlite3HashClear(&temp1); - sqlite3HashClear(&pSchema->fkeyHash); - pSchema->pSeqTab = 0; - if( pSchema->flags & DB_SchemaLoaded ){ - pSchema->iGeneration++; - pSchema->flags &= ~DB_SchemaLoaded; - } -} - -/* -** Find and return the schema associated with a BTree. Create -** a new one if necessary. -*/ -Schema *sqlite3SchemaGet(sqlite3 *db, Btree *pBt){ - Schema * p; - if( pBt ){ - p = (Schema *)sqlite3BtreeSchema(pBt, sizeof(Schema), sqlite3SchemaClear); - }else{ - p = (Schema *)sqlite3DbMallocZero(0, sizeof(Schema)); - } - if( !p ){ - db->mallocFailed = 1; - }else if ( 0==p->file_format ){ - sqlite3HashInit(&p->tblHash); - sqlite3HashInit(&p->idxHash); - sqlite3HashInit(&p->trigHash); - sqlite3HashInit(&p->fkeyHash); - p->enc = SQLITE_UTF8; - } - return p; -} diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/complete.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/complete.c deleted file mode 100644 index 9799a6ae30..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/complete.c +++ /dev/null @@ -1,283 +0,0 @@ -/* -** 2001 September 15 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** An tokenizer for SQL -** -** This file contains C code that implements the sqlite3_complete() API. -** This code used to be part of the tokenizer.c source file. But by -** separating it out, the code will be automatically omitted from -** static links that do not use it. -*/ -#include "sqliteInt.h" -#ifndef SQLITE_OMIT_COMPLETE - -/* -** This is defined in tokenize.c. We just have to import the definition. -*/ -#ifndef SQLITE_AMALGAMATION -#ifdef SQLITE_ASCII -#define IdChar(C) ((sqlite3CtypeMap[(unsigned char)C]&0x46)!=0) -#endif -#ifdef SQLITE_EBCDIC -extern const char sqlite3IsEbcdicIdChar[]; -#define IdChar(C) (((c=C)>=0x42 && sqlite3IsEbcdicIdChar[c-0x40])) -#endif -#endif /* SQLITE_AMALGAMATION */ - - -/* -** Token types used by the sqlite3_complete() routine. See the header -** comments on that procedure for additional information. -*/ -#define tkSEMI 0 -#define tkWS 1 -#define tkOTHER 2 -#ifndef SQLITE_OMIT_TRIGGER -#define tkEXPLAIN 3 -#define tkCREATE 4 -#define tkTEMP 5 -#define tkTRIGGER 6 -#define tkEND 7 -#endif - -/* -** Return TRUE if the given SQL string ends in a semicolon. -** -** Special handling is require for CREATE TRIGGER statements. -** Whenever the CREATE TRIGGER keywords are seen, the statement -** must end with ";END;". -** -** This implementation uses a state machine with 8 states: -** -** (0) INVALID We have not yet seen a non-whitespace character. -** -** (1) START At the beginning or end of an SQL statement. This routine -** returns 1 if it ends in the START state and 0 if it ends -** in any other state. -** -** (2) NORMAL We are in the middle of statement which ends with a single -** semicolon. -** -** (3) EXPLAIN The keyword EXPLAIN has been seen at the beginning of -** a statement. -** -** (4) CREATE The keyword CREATE has been seen at the beginning of a -** statement, possibly preceeded by EXPLAIN and/or followed by -** TEMP or TEMPORARY -** -** (5) TRIGGER We are in the middle of a trigger definition that must be -** ended by a semicolon, the keyword END, and another semicolon. -** -** (6) SEMI We've seen the first semicolon in the ";END;" that occurs at -** the end of a trigger definition. -** -** (7) END We've seen the ";END" of the ";END;" that occurs at the end -** of a trigger difinition. -** -** Transitions between states above are determined by tokens extracted -** from the input. The following tokens are significant: -** -** (0) tkSEMI A semicolon. -** (1) tkWS Whitespace. -** (2) tkOTHER Any other SQL token. -** (3) tkEXPLAIN The "explain" keyword. -** (4) tkCREATE The "create" keyword. -** (5) tkTEMP The "temp" or "temporary" keyword. -** (6) tkTRIGGER The "trigger" keyword. -** (7) tkEND The "end" keyword. -** -** Whitespace never causes a state transition and is always ignored. -** This means that a SQL string of all whitespace is invalid. -** -** If we compile with SQLITE_OMIT_TRIGGER, all of the computation needed -** to recognize the end of a trigger can be omitted. All we have to do -** is look for a semicolon that is not part of an string or comment. -*/ -int sqlite3_complete(const char *zSql){ - u8 state = 0; /* Current state, using numbers defined in header comment */ - u8 token; /* Value of the next token */ - -#ifndef SQLITE_OMIT_TRIGGER - /* A complex statement machine used to detect the end of a CREATE TRIGGER - ** statement. This is the normal case. - */ - static const u8 trans[8][8] = { - /* Token: */ - /* State: ** SEMI WS OTHER EXPLAIN CREATE TEMP TRIGGER END */ - /* 0 INVALID: */ { 1, 0, 2, 3, 4, 2, 2, 2, }, - /* 1 START: */ { 1, 1, 2, 3, 4, 2, 2, 2, }, - /* 2 NORMAL: */ { 1, 2, 2, 2, 2, 2, 2, 2, }, - /* 3 EXPLAIN: */ { 1, 3, 3, 2, 4, 2, 2, 2, }, - /* 4 CREATE: */ { 1, 4, 2, 2, 2, 4, 5, 2, }, - /* 5 TRIGGER: */ { 6, 5, 5, 5, 5, 5, 5, 5, }, - /* 6 SEMI: */ { 6, 6, 5, 5, 5, 5, 5, 7, }, - /* 7 END: */ { 1, 7, 5, 5, 5, 5, 5, 5, }, - }; -#else - /* If triggers are not supported by this compile then the statement machine - ** used to detect the end of a statement is much simplier - */ - static const u8 trans[3][3] = { - /* Token: */ - /* State: ** SEMI WS OTHER */ - /* 0 INVALID: */ { 1, 0, 2, }, - /* 1 START: */ { 1, 1, 2, }, - /* 2 NORMAL: */ { 1, 2, 2, }, - }; -#endif /* SQLITE_OMIT_TRIGGER */ - - while( *zSql ){ - switch( *zSql ){ - case ';': { /* A semicolon */ - token = tkSEMI; - break; - } - case ' ': - case '\r': - case '\t': - case '\n': - case '\f': { /* White space is ignored */ - token = tkWS; - break; - } - case '/': { /* C-style comments */ - if( zSql[1]!='*' ){ - token = tkOTHER; - break; - } - zSql += 2; - while( zSql[0] && (zSql[0]!='*' || zSql[1]!='/') ){ zSql++; } - if( zSql[0]==0 ) return 0; - zSql++; - token = tkWS; - break; - } - case '-': { /* SQL-style comments from "--" to end of line */ - if( zSql[1]!='-' ){ - token = tkOTHER; - break; - } - while( *zSql && *zSql!='\n' ){ zSql++; } - if( *zSql==0 ) return state==1; - token = tkWS; - break; - } - case '[': { /* Microsoft-style identifiers in [...] */ - zSql++; - while( *zSql && *zSql!=']' ){ zSql++; } - if( *zSql==0 ) return 0; - token = tkOTHER; - break; - } - case '`': /* Grave-accent quoted symbols used by MySQL */ - case '"': /* single- and double-quoted strings */ - case '\'': { - int c = *zSql; - zSql++; - while( *zSql && *zSql!=c ){ zSql++; } - if( *zSql==0 ) return 0; - token = tkOTHER; - break; - } - default: { -#ifdef SQLITE_EBCDIC - unsigned char c; -#endif - if( IdChar((u8)*zSql) ){ - /* Keywords and unquoted identifiers */ - int nId; - for(nId=1; IdChar(zSql[nId]); nId++){} -#ifdef SQLITE_OMIT_TRIGGER - token = tkOTHER; -#else - switch( *zSql ){ - case 'c': case 'C': { - if( nId==6 && sqlite3StrNICmp(zSql, "create", 6)==0 ){ - token = tkCREATE; - }else{ - token = tkOTHER; - } - break; - } - case 't': case 'T': { - if( nId==7 && sqlite3StrNICmp(zSql, "trigger", 7)==0 ){ - token = tkTRIGGER; - }else if( nId==4 && sqlite3StrNICmp(zSql, "temp", 4)==0 ){ - token = tkTEMP; - }else if( nId==9 && sqlite3StrNICmp(zSql, "temporary", 9)==0 ){ - token = tkTEMP; - }else{ - token = tkOTHER; - } - break; - } - case 'e': case 'E': { - if( nId==3 && sqlite3StrNICmp(zSql, "end", 3)==0 ){ - token = tkEND; - }else -#ifndef SQLITE_OMIT_EXPLAIN - if( nId==7 && sqlite3StrNICmp(zSql, "explain", 7)==0 ){ - token = tkEXPLAIN; - }else -#endif - { - token = tkOTHER; - } - break; - } - default: { - token = tkOTHER; - break; - } - } -#endif /* SQLITE_OMIT_TRIGGER */ - zSql += nId-1; - }else{ - /* Operators and special symbols */ - token = tkOTHER; - } - break; - } - } - state = trans[state][token]; - zSql++; - } - return state==1; -} - -#ifndef SQLITE_OMIT_UTF16 -/* -** This routine is the same as the sqlite3_complete() routine described -** above, except that the parameter is required to be UTF-16 encoded, not -** UTF-8. -*/ -int sqlite3_complete16(const void *zSql){ - sqlite3_value *pVal; - char const *zSql8; - int rc = SQLITE_NOMEM; - -#ifndef SQLITE_OMIT_AUTOINIT - rc = sqlite3_initialize(); - if( rc ) return rc; -#endif - pVal = sqlite3ValueNew(0); - sqlite3ValueSetStr(pVal, -1, zSql, SQLITE_UTF16NATIVE, SQLITE_STATIC); - zSql8 = sqlite3ValueText(pVal, SQLITE_UTF8); - if( zSql8 ){ - rc = sqlite3_complete(zSql8); - }else{ - rc = SQLITE_NOMEM; - } - sqlite3ValueFree(pVal); - return sqlite3ApiExit(0, rc); -} -#endif /* SQLITE_OMIT_UTF16 */ -#endif /* SQLITE_OMIT_COMPLETE */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/ctime.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/ctime.c deleted file mode 100644 index 222c7dd72c..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/ctime.c +++ /dev/null @@ -1,399 +0,0 @@ -/* -** 2010 February 23 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** -** This file implements routines used to report what compile-time options -** SQLite was built with. -*/ - -#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS - -#include "sqliteInt.h" - -/* -** An array of names of all compile-time options. This array should -** be sorted A-Z. -** -** This array looks large, but in a typical installation actually uses -** only a handful of compile-time options, so most times this array is usually -** rather short and uses little memory space. -*/ -static const char * const azCompileOpt[] = { - -/* These macros are provided to "stringify" the value of the define -** for those options in which the value is meaningful. */ -#define CTIMEOPT_VAL_(opt) #opt -#define CTIMEOPT_VAL(opt) CTIMEOPT_VAL_(opt) - -#ifdef SQLITE_32BIT_ROWID - "32BIT_ROWID", -#endif -#ifdef SQLITE_4_BYTE_ALIGNED_MALLOC - "4_BYTE_ALIGNED_MALLOC", -#endif -#ifdef SQLITE_CASE_SENSITIVE_LIKE - "CASE_SENSITIVE_LIKE", -#endif -#ifdef SQLITE_CHECK_PAGES - "CHECK_PAGES", -#endif -#ifdef SQLITE_COVERAGE_TEST - "COVERAGE_TEST", -#endif -#ifdef SQLITE_DEBUG - "DEBUG", -#endif -#ifdef SQLITE_DEFAULT_LOCKING_MODE - "DEFAULT_LOCKING_MODE=" CTIMEOPT_VAL(SQLITE_DEFAULT_LOCKING_MODE), -#endif -#ifdef SQLITE_DISABLE_DIRSYNC - "DISABLE_DIRSYNC", -#endif -#ifdef SQLITE_DISABLE_LFS - "DISABLE_LFS", -#endif -#ifdef SQLITE_ENABLE_ATOMIC_WRITE - "ENABLE_ATOMIC_WRITE", -#endif -#ifdef SQLITE_ENABLE_CEROD - "ENABLE_CEROD", -#endif -#ifdef SQLITE_ENABLE_COLUMN_METADATA - "ENABLE_COLUMN_METADATA", -#endif -#ifdef SQLITE_ENABLE_EXPENSIVE_ASSERT - "ENABLE_EXPENSIVE_ASSERT", -#endif -#ifdef SQLITE_ENABLE_FTS1 - "ENABLE_FTS1", -#endif -#ifdef SQLITE_ENABLE_FTS2 - "ENABLE_FTS2", -#endif -#ifdef SQLITE_ENABLE_FTS3 - "ENABLE_FTS3", -#endif -#ifdef SQLITE_ENABLE_FTS3_PARENTHESIS - "ENABLE_FTS3_PARENTHESIS", -#endif -#ifdef SQLITE_ENABLE_FTS4 - "ENABLE_FTS4", -#endif -#ifdef SQLITE_ENABLE_ICU - "ENABLE_ICU", -#endif -#ifdef SQLITE_ENABLE_IOTRACE - "ENABLE_IOTRACE", -#endif -#ifdef SQLITE_ENABLE_LOAD_EXTENSION - "ENABLE_LOAD_EXTENSION", -#endif -#ifdef SQLITE_ENABLE_LOCKING_STYLE - "ENABLE_LOCKING_STYLE=" CTIMEOPT_VAL(SQLITE_ENABLE_LOCKING_STYLE), -#endif -#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT - "ENABLE_MEMORY_MANAGEMENT", -#endif -#ifdef SQLITE_ENABLE_MEMSYS3 - "ENABLE_MEMSYS3", -#endif -#ifdef SQLITE_ENABLE_MEMSYS5 - "ENABLE_MEMSYS5", -#endif -#ifdef SQLITE_ENABLE_OVERSIZE_CELL_CHECK - "ENABLE_OVERSIZE_CELL_CHECK", -#endif -#ifdef SQLITE_ENABLE_RTREE - "ENABLE_RTREE", -#endif -#ifdef SQLITE_ENABLE_STAT3 - "ENABLE_STAT3", -#endif -#ifdef SQLITE_ENABLE_UNLOCK_NOTIFY - "ENABLE_UNLOCK_NOTIFY", -#endif -#ifdef SQLITE_ENABLE_UPDATE_DELETE_LIMIT - "ENABLE_UPDATE_DELETE_LIMIT", -#endif -#ifdef SQLITE_HAS_CODEC - "HAS_CODEC", -#endif -#ifdef SQLITE_HAVE_ISNAN - "HAVE_ISNAN", -#endif -#ifdef SQLITE_HOMEGROWN_RECURSIVE_MUTEX - "HOMEGROWN_RECURSIVE_MUTEX", -#endif -#ifdef SQLITE_IGNORE_AFP_LOCK_ERRORS - "IGNORE_AFP_LOCK_ERRORS", -#endif -#ifdef SQLITE_IGNORE_FLOCK_LOCK_ERRORS - "IGNORE_FLOCK_LOCK_ERRORS", -#endif -#ifdef SQLITE_INT64_TYPE - "INT64_TYPE", -#endif -#ifdef SQLITE_LOCK_TRACE - "LOCK_TRACE", -#endif -#ifdef SQLITE_MAX_SCHEMA_RETRY - "MAX_SCHEMA_RETRY=" CTIMEOPT_VAL(SQLITE_MAX_SCHEMA_RETRY), -#endif -#ifdef SQLITE_MEMDEBUG - "MEMDEBUG", -#endif -#ifdef SQLITE_MIXED_ENDIAN_64BIT_FLOAT - "MIXED_ENDIAN_64BIT_FLOAT", -#endif -#ifdef SQLITE_NO_SYNC - "NO_SYNC", -#endif -#ifdef SQLITE_OMIT_ALTERTABLE - "OMIT_ALTERTABLE", -#endif -#ifdef SQLITE_OMIT_ANALYZE - "OMIT_ANALYZE", -#endif -#ifdef SQLITE_OMIT_ATTACH - "OMIT_ATTACH", -#endif -#ifdef SQLITE_OMIT_AUTHORIZATION - "OMIT_AUTHORIZATION", -#endif -#ifdef SQLITE_OMIT_AUTOINCREMENT - "OMIT_AUTOINCREMENT", -#endif -#ifdef SQLITE_OMIT_AUTOINIT - "OMIT_AUTOINIT", -#endif -#ifdef SQLITE_OMIT_AUTOMATIC_INDEX - "OMIT_AUTOMATIC_INDEX", -#endif -#ifdef SQLITE_OMIT_AUTORESET - "OMIT_AUTORESET", -#endif -#ifdef SQLITE_OMIT_AUTOVACUUM - "OMIT_AUTOVACUUM", -#endif -#ifdef SQLITE_OMIT_BETWEEN_OPTIMIZATION - "OMIT_BETWEEN_OPTIMIZATION", -#endif -#ifdef SQLITE_OMIT_BLOB_LITERAL - "OMIT_BLOB_LITERAL", -#endif -#ifdef SQLITE_OMIT_BTREECOUNT - "OMIT_BTREECOUNT", -#endif -#ifdef SQLITE_OMIT_BUILTIN_TEST - "OMIT_BUILTIN_TEST", -#endif -#ifdef SQLITE_OMIT_CAST - "OMIT_CAST", -#endif -#ifdef SQLITE_OMIT_CHECK - "OMIT_CHECK", -#endif -/* // redundant -** #ifdef SQLITE_OMIT_COMPILEOPTION_DIAGS -** "OMIT_COMPILEOPTION_DIAGS", -** #endif -*/ -#ifdef SQLITE_OMIT_COMPLETE - "OMIT_COMPLETE", -#endif -#ifdef SQLITE_OMIT_COMPOUND_SELECT - "OMIT_COMPOUND_SELECT", -#endif -#ifdef SQLITE_OMIT_DATETIME_FUNCS - "OMIT_DATETIME_FUNCS", -#endif -#ifdef SQLITE_OMIT_DECLTYPE - "OMIT_DECLTYPE", -#endif -#ifdef SQLITE_OMIT_DEPRECATED - "OMIT_DEPRECATED", -#endif -#ifdef SQLITE_OMIT_DISKIO - "OMIT_DISKIO", -#endif -#ifdef SQLITE_OMIT_EXPLAIN - "OMIT_EXPLAIN", -#endif -#ifdef SQLITE_OMIT_FLAG_PRAGMAS - "OMIT_FLAG_PRAGMAS", -#endif -#ifdef SQLITE_OMIT_FLOATING_POINT - "OMIT_FLOATING_POINT", -#endif -#ifdef SQLITE_OMIT_FOREIGN_KEY - "OMIT_FOREIGN_KEY", -#endif -#ifdef SQLITE_OMIT_GET_TABLE - "OMIT_GET_TABLE", -#endif -#ifdef SQLITE_OMIT_INCRBLOB - "OMIT_INCRBLOB", -#endif -#ifdef SQLITE_OMIT_INTEGRITY_CHECK - "OMIT_INTEGRITY_CHECK", -#endif -#ifdef SQLITE_OMIT_LIKE_OPTIMIZATION - "OMIT_LIKE_OPTIMIZATION", -#endif -#ifdef SQLITE_OMIT_LOAD_EXTENSION - "OMIT_LOAD_EXTENSION", -#endif -#ifdef SQLITE_OMIT_LOCALTIME - "OMIT_LOCALTIME", -#endif -#ifdef SQLITE_OMIT_LOOKASIDE - "OMIT_LOOKASIDE", -#endif -#ifdef SQLITE_OMIT_MEMORYDB - "OMIT_MEMORYDB", -#endif -#ifdef SQLITE_OMIT_MERGE_SORT - "OMIT_MERGE_SORT", -#endif -#ifdef SQLITE_OMIT_OR_OPTIMIZATION - "OMIT_OR_OPTIMIZATION", -#endif -#ifdef SQLITE_OMIT_PAGER_PRAGMAS - "OMIT_PAGER_PRAGMAS", -#endif -#ifdef SQLITE_OMIT_PRAGMA - "OMIT_PRAGMA", -#endif -#ifdef SQLITE_OMIT_PROGRESS_CALLBACK - "OMIT_PROGRESS_CALLBACK", -#endif -#ifdef SQLITE_OMIT_QUICKBALANCE - "OMIT_QUICKBALANCE", -#endif -#ifdef SQLITE_OMIT_REINDEX - "OMIT_REINDEX", -#endif -#ifdef SQLITE_OMIT_SCHEMA_PRAGMAS - "OMIT_SCHEMA_PRAGMAS", -#endif -#ifdef SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS - "OMIT_SCHEMA_VERSION_PRAGMAS", -#endif -#ifdef SQLITE_OMIT_SHARED_CACHE - "OMIT_SHARED_CACHE", -#endif -#ifdef SQLITE_OMIT_SUBQUERY - "OMIT_SUBQUERY", -#endif -#ifdef SQLITE_OMIT_TCL_VARIABLE - "OMIT_TCL_VARIABLE", -#endif -#ifdef SQLITE_OMIT_TEMPDB - "OMIT_TEMPDB", -#endif -#ifdef SQLITE_OMIT_TRACE - "OMIT_TRACE", -#endif -#ifdef SQLITE_OMIT_TRIGGER - "OMIT_TRIGGER", -#endif -#ifdef SQLITE_OMIT_TRUNCATE_OPTIMIZATION - "OMIT_TRUNCATE_OPTIMIZATION", -#endif -#ifdef SQLITE_OMIT_UTF16 - "OMIT_UTF16", -#endif -#ifdef SQLITE_OMIT_VACUUM - "OMIT_VACUUM", -#endif -#ifdef SQLITE_OMIT_VIEW - "OMIT_VIEW", -#endif -#ifdef SQLITE_OMIT_VIRTUALTABLE - "OMIT_VIRTUALTABLE", -#endif -#ifdef SQLITE_OMIT_WAL - "OMIT_WAL", -#endif -#ifdef SQLITE_OMIT_WSD - "OMIT_WSD", -#endif -#ifdef SQLITE_OMIT_XFER_OPT - "OMIT_XFER_OPT", -#endif -#ifdef SQLITE_PERFORMANCE_TRACE - "PERFORMANCE_TRACE", -#endif -#ifdef SQLITE_PROXY_DEBUG - "PROXY_DEBUG", -#endif -#ifdef SQLITE_SECURE_DELETE - "SECURE_DELETE", -#endif -#ifdef SQLITE_SMALL_STACK - "SMALL_STACK", -#endif -#ifdef SQLITE_SOUNDEX - "SOUNDEX", -#endif -#ifdef SQLITE_TCL - "TCL", -#endif -#ifdef SQLITE_TEMP_STORE - "TEMP_STORE=" CTIMEOPT_VAL(SQLITE_TEMP_STORE), -#endif -#ifdef SQLITE_TEST - "TEST", -#endif -#ifdef SQLITE_THREADSAFE - "THREADSAFE=" CTIMEOPT_VAL(SQLITE_THREADSAFE), -#endif -#ifdef SQLITE_USE_ALLOCA - "USE_ALLOCA", -#endif -#ifdef SQLITE_ZERO_MALLOC - "ZERO_MALLOC" -#endif -}; - -/* -** Given the name of a compile-time option, return true if that option -** was used and false if not. -** -** The name can optionally begin with "SQLITE_" but the "SQLITE_" prefix -** is not required for a match. -*/ -int sqlite3_compileoption_used(const char *zOptName){ - int i, n; - if( sqlite3StrNICmp(zOptName, "SQLITE_", 7)==0 ) zOptName += 7; - n = sqlite3Strlen30(zOptName); - - /* Since ArraySize(azCompileOpt) is normally in single digits, a - ** linear search is adequate. No need for a binary search. */ - for(i=0; i=0 && N -#include -#include - -#ifndef SQLITE_OMIT_DATETIME_FUNCS - - -/* -** A structure for holding a single date and time. -*/ -typedef struct DateTime DateTime; -struct DateTime { - sqlite3_int64 iJD; /* The julian day number times 86400000 */ - int Y, M, D; /* Year, month, and day */ - int h, m; /* Hour and minutes */ - int tz; /* Timezone offset in minutes */ - double s; /* Seconds */ - char validYMD; /* True (1) if Y,M,D are valid */ - char validHMS; /* True (1) if h,m,s are valid */ - char validJD; /* True (1) if iJD is valid */ - char validTZ; /* True (1) if tz is valid */ -}; - - -/* -** Convert zDate into one or more integers. Additional arguments -** come in groups of 5 as follows: -** -** N number of digits in the integer -** min minimum allowed value of the integer -** max maximum allowed value of the integer -** nextC first character after the integer -** pVal where to write the integers value. -** -** Conversions continue until one with nextC==0 is encountered. -** The function returns the number of successful conversions. -*/ -static int getDigits(const char *zDate, ...){ - va_list ap; - int val; - int N; - int min; - int max; - int nextC; - int *pVal; - int cnt = 0; - va_start(ap, zDate); - do{ - N = va_arg(ap, int); - min = va_arg(ap, int); - max = va_arg(ap, int); - nextC = va_arg(ap, int); - pVal = va_arg(ap, int*); - val = 0; - while( N-- ){ - if( !sqlite3Isdigit(*zDate) ){ - goto end_getDigits; - } - val = val*10 + *zDate - '0'; - zDate++; - } - if( valmax || (nextC!=0 && nextC!=*zDate) ){ - goto end_getDigits; - } - *pVal = val; - zDate++; - cnt++; - }while( nextC ); -end_getDigits: - va_end(ap); - return cnt; -} - -/* -** Parse a timezone extension on the end of a date-time. -** The extension is of the form: -** -** (+/-)HH:MM -** -** Or the "zulu" notation: -** -** Z -** -** If the parse is successful, write the number of minutes -** of change in p->tz and return 0. If a parser error occurs, -** return non-zero. -** -** A missing specifier is not considered an error. -*/ -static int parseTimezone(const char *zDate, DateTime *p){ - int sgn = 0; - int nHr, nMn; - int c; - while( sqlite3Isspace(*zDate) ){ zDate++; } - p->tz = 0; - c = *zDate; - if( c=='-' ){ - sgn = -1; - }else if( c=='+' ){ - sgn = +1; - }else if( c=='Z' || c=='z' ){ - zDate++; - goto zulu_time; - }else{ - return c!=0; - } - zDate++; - if( getDigits(zDate, 2, 0, 14, ':', &nHr, 2, 0, 59, 0, &nMn)!=2 ){ - return 1; - } - zDate += 5; - p->tz = sgn*(nMn + nHr*60); -zulu_time: - while( sqlite3Isspace(*zDate) ){ zDate++; } - return *zDate!=0; -} - -/* -** Parse times of the form HH:MM or HH:MM:SS or HH:MM:SS.FFFF. -** The HH, MM, and SS must each be exactly 2 digits. The -** fractional seconds FFFF can be one or more digits. -** -** Return 1 if there is a parsing error and 0 on success. -*/ -static int parseHhMmSs(const char *zDate, DateTime *p){ - int h, m, s; - double ms = 0.0; - if( getDigits(zDate, 2, 0, 24, ':', &h, 2, 0, 59, 0, &m)!=2 ){ - return 1; - } - zDate += 5; - if( *zDate==':' ){ - zDate++; - if( getDigits(zDate, 2, 0, 59, 0, &s)!=1 ){ - return 1; - } - zDate += 2; - if( *zDate=='.' && sqlite3Isdigit(zDate[1]) ){ - double rScale = 1.0; - zDate++; - while( sqlite3Isdigit(*zDate) ){ - ms = ms*10.0 + *zDate - '0'; - rScale *= 10.0; - zDate++; - } - ms /= rScale; - } - }else{ - s = 0; - } - p->validJD = 0; - p->validHMS = 1; - p->h = h; - p->m = m; - p->s = s + ms; - if( parseTimezone(zDate, p) ) return 1; - p->validTZ = (p->tz!=0)?1:0; - return 0; -} - -/* -** Convert from YYYY-MM-DD HH:MM:SS to julian day. We always assume -** that the YYYY-MM-DD is according to the Gregorian calendar. -** -** Reference: Meeus page 61 -*/ -static void computeJD(DateTime *p){ - int Y, M, D, A, B, X1, X2; - - if( p->validJD ) return; - if( p->validYMD ){ - Y = p->Y; - M = p->M; - D = p->D; - }else{ - Y = 2000; /* If no YMD specified, assume 2000-Jan-01 */ - M = 1; - D = 1; - } - if( M<=2 ){ - Y--; - M += 12; - } - A = Y/100; - B = 2 - A + (A/4); - X1 = 36525*(Y+4716)/100; - X2 = 306001*(M+1)/10000; - p->iJD = (sqlite3_int64)((X1 + X2 + D + B - 1524.5 ) * 86400000); - p->validJD = 1; - if( p->validHMS ){ - p->iJD += p->h*3600000 + p->m*60000 + (sqlite3_int64)(p->s*1000); - if( p->validTZ ){ - p->iJD -= p->tz*60000; - p->validYMD = 0; - p->validHMS = 0; - p->validTZ = 0; - } - } -} - -/* -** Parse dates of the form -** -** YYYY-MM-DD HH:MM:SS.FFF -** YYYY-MM-DD HH:MM:SS -** YYYY-MM-DD HH:MM -** YYYY-MM-DD -** -** Write the result into the DateTime structure and return 0 -** on success and 1 if the input string is not a well-formed -** date. -*/ -static int parseYyyyMmDd(const char *zDate, DateTime *p){ - int Y, M, D, neg; - - if( zDate[0]=='-' ){ - zDate++; - neg = 1; - }else{ - neg = 0; - } - if( getDigits(zDate,4,0,9999,'-',&Y,2,1,12,'-',&M,2,1,31,0,&D)!=3 ){ - return 1; - } - zDate += 10; - while( sqlite3Isspace(*zDate) || 'T'==*(u8*)zDate ){ zDate++; } - if( parseHhMmSs(zDate, p)==0 ){ - /* We got the time */ - }else if( *zDate==0 ){ - p->validHMS = 0; - }else{ - return 1; - } - p->validJD = 0; - p->validYMD = 1; - p->Y = neg ? -Y : Y; - p->M = M; - p->D = D; - if( p->validTZ ){ - computeJD(p); - } - return 0; -} - -/* -** Set the time to the current time reported by the VFS. -** -** Return the number of errors. -*/ -static int setDateTimeToCurrent(sqlite3_context *context, DateTime *p){ - sqlite3 *db = sqlite3_context_db_handle(context); - if( sqlite3OsCurrentTimeInt64(db->pVfs, &p->iJD)==SQLITE_OK ){ - p->validJD = 1; - return 0; - }else{ - return 1; - } -} - -/* -** Attempt to parse the given string into a Julian Day Number. Return -** the number of errors. -** -** The following are acceptable forms for the input string: -** -** YYYY-MM-DD HH:MM:SS.FFF +/-HH:MM -** DDDD.DD -** now -** -** In the first form, the +/-HH:MM is always optional. The fractional -** seconds extension (the ".FFF") is optional. The seconds portion -** (":SS.FFF") is option. The year and date can be omitted as long -** as there is a time string. The time string can be omitted as long -** as there is a year and date. -*/ -static int parseDateOrTime( - sqlite3_context *context, - const char *zDate, - DateTime *p -){ - double r; - if( parseYyyyMmDd(zDate,p)==0 ){ - return 0; - }else if( parseHhMmSs(zDate, p)==0 ){ - return 0; - }else if( sqlite3StrICmp(zDate,"now")==0){ - return setDateTimeToCurrent(context, p); - }else if( sqlite3AtoF(zDate, &r, sqlite3Strlen30(zDate), SQLITE_UTF8) ){ - p->iJD = (sqlite3_int64)(r*86400000.0 + 0.5); - p->validJD = 1; - return 0; - } - return 1; -} - -/* -** Compute the Year, Month, and Day from the julian day number. -*/ -static void computeYMD(DateTime *p){ - int Z, A, B, C, D, E, X1; - if( p->validYMD ) return; - if( !p->validJD ){ - p->Y = 2000; - p->M = 1; - p->D = 1; - }else{ - Z = (int)((p->iJD + 43200000)/86400000); - A = (int)((Z - 1867216.25)/36524.25); - A = Z + 1 + A - (A/4); - B = A + 1524; - C = (int)((B - 122.1)/365.25); - D = (36525*C)/100; - E = (int)((B-D)/30.6001); - X1 = (int)(30.6001*E); - p->D = B - D - X1; - p->M = E<14 ? E-1 : E-13; - p->Y = p->M>2 ? C - 4716 : C - 4715; - } - p->validYMD = 1; -} - -/* -** Compute the Hour, Minute, and Seconds from the julian day number. -*/ -static void computeHMS(DateTime *p){ - int s; - if( p->validHMS ) return; - computeJD(p); - s = (int)((p->iJD + 43200000) % 86400000); - p->s = s/1000.0; - s = (int)p->s; - p->s -= s; - p->h = s/3600; - s -= p->h*3600; - p->m = s/60; - p->s += s - p->m*60; - p->validHMS = 1; -} - -/* -** Compute both YMD and HMS -*/ -static void computeYMD_HMS(DateTime *p){ - computeYMD(p); - computeHMS(p); -} - -/* -** Clear the YMD and HMS and the TZ -*/ -static void clearYMD_HMS_TZ(DateTime *p){ - p->validYMD = 0; - p->validHMS = 0; - p->validTZ = 0; -} - -/* -** On recent Windows platforms, the localtime_s() function is available -** as part of the "Secure CRT". It is essentially equivalent to -** localtime_r() available under most POSIX platforms, except that the -** order of the parameters is reversed. -** -** See http://msdn.microsoft.com/en-us/library/a442x3ye(VS.80).aspx. -** -** If the user has not indicated to use localtime_r() or localtime_s() -** already, check for an MSVC build environment that provides -** localtime_s(). -*/ -#if !defined(HAVE_LOCALTIME_R) && !defined(HAVE_LOCALTIME_S) && \ - defined(_MSC_VER) && defined(_CRT_INSECURE_DEPRECATE) -#define HAVE_LOCALTIME_S 1 -#endif - -#ifndef SQLITE_OMIT_LOCALTIME -/* -** The following routine implements the rough equivalent of localtime_r() -** using whatever operating-system specific localtime facility that -** is available. This routine returns 0 on success and -** non-zero on any kind of error. -** -** If the sqlite3GlobalConfig.bLocaltimeFault variable is true then this -** routine will always fail. -*/ -static int osLocaltime(time_t *t, struct tm *pTm){ - int rc; -#if (!defined(HAVE_LOCALTIME_R) || !HAVE_LOCALTIME_R) \ - && (!defined(HAVE_LOCALTIME_S) || !HAVE_LOCALTIME_S) - struct tm *pX; -#if SQLITE_THREADSAFE>0 - sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); -#endif - sqlite3_mutex_enter(mutex); - pX = localtime(t); -#ifndef SQLITE_OMIT_BUILTIN_TEST - if( sqlite3GlobalConfig.bLocaltimeFault ) pX = 0; -#endif - if( pX ) *pTm = *pX; - sqlite3_mutex_leave(mutex); - rc = pX==0; -#else -#ifndef SQLITE_OMIT_BUILTIN_TEST - if( sqlite3GlobalConfig.bLocaltimeFault ) return 1; -#endif -#if defined(HAVE_LOCALTIME_R) && HAVE_LOCALTIME_R - rc = localtime_r(t, pTm)==0; -#else - rc = localtime_s(pTm, t); -#endif /* HAVE_LOCALTIME_R */ -#endif /* HAVE_LOCALTIME_R || HAVE_LOCALTIME_S */ - return rc; -} -#endif /* SQLITE_OMIT_LOCALTIME */ - - -#ifndef SQLITE_OMIT_LOCALTIME -/* -** Compute the difference (in milliseconds) between localtime and UTC -** (a.k.a. GMT) for the time value p where p is in UTC. If no error occurs, -** return this value and set *pRc to SQLITE_OK. -** -** Or, if an error does occur, set *pRc to SQLITE_ERROR. The returned value -** is undefined in this case. -*/ -static sqlite3_int64 localtimeOffset( - DateTime *p, /* Date at which to calculate offset */ - sqlite3_context *pCtx, /* Write error here if one occurs */ - int *pRc /* OUT: Error code. SQLITE_OK or ERROR */ -){ - DateTime x, y; - time_t t; - struct tm sLocal; - - /* Initialize the contents of sLocal to avoid a compiler warning. */ - memset(&sLocal, 0, sizeof(sLocal)); - - x = *p; - computeYMD_HMS(&x); - if( x.Y<1971 || x.Y>=2038 ){ - x.Y = 2000; - x.M = 1; - x.D = 1; - x.h = 0; - x.m = 0; - x.s = 0.0; - } else { - int s = (int)(x.s + 0.5); - x.s = s; - } - x.tz = 0; - x.validJD = 0; - computeJD(&x); - t = (time_t)(x.iJD/1000 - 21086676*(i64)10000); - if( osLocaltime(&t, &sLocal) ){ - sqlite3_result_error(pCtx, "local time unavailable", -1); - *pRc = SQLITE_ERROR; - return 0; - } - y.Y = sLocal.tm_year + 1900; - y.M = sLocal.tm_mon + 1; - y.D = sLocal.tm_mday; - y.h = sLocal.tm_hour; - y.m = sLocal.tm_min; - y.s = sLocal.tm_sec; - y.validYMD = 1; - y.validHMS = 1; - y.validJD = 0; - y.validTZ = 0; - computeJD(&y); - *pRc = SQLITE_OK; - return y.iJD - x.iJD; -} -#endif /* SQLITE_OMIT_LOCALTIME */ - -/* -** Process a modifier to a date-time stamp. The modifiers are -** as follows: -** -** NNN days -** NNN hours -** NNN minutes -** NNN.NNNN seconds -** NNN months -** NNN years -** start of month -** start of year -** start of week -** start of day -** weekday N -** unixepoch -** localtime -** utc -** -** Return 0 on success and 1 if there is any kind of error. If the error -** is in a system call (i.e. localtime()), then an error message is written -** to context pCtx. If the error is an unrecognized modifier, no error is -** written to pCtx. -*/ -static int parseModifier(sqlite3_context *pCtx, const char *zMod, DateTime *p){ - int rc = 1; - int n; - double r; - char *z, zBuf[30]; - z = zBuf; - for(n=0; niJD += localtimeOffset(p, pCtx, &rc); - clearYMD_HMS_TZ(p); - } - break; - } -#endif - case 'u': { - /* - ** unixepoch - ** - ** Treat the current value of p->iJD as the number of - ** seconds since 1970. Convert to a real julian day number. - */ - if( strcmp(z, "unixepoch")==0 && p->validJD ){ - p->iJD = (p->iJD + 43200)/86400 + 21086676*(i64)10000000; - clearYMD_HMS_TZ(p); - rc = 0; - } -#ifndef SQLITE_OMIT_LOCALTIME - else if( strcmp(z, "utc")==0 ){ - sqlite3_int64 c1; - computeJD(p); - c1 = localtimeOffset(p, pCtx, &rc); - if( rc==SQLITE_OK ){ - p->iJD -= c1; - clearYMD_HMS_TZ(p); - p->iJD += c1 - localtimeOffset(p, pCtx, &rc); - } - } -#endif - break; - } - case 'w': { - /* - ** weekday N - ** - ** Move the date to the same time on the next occurrence of - ** weekday N where 0==Sunday, 1==Monday, and so forth. If the - ** date is already on the appropriate weekday, this is a no-op. - */ - if( strncmp(z, "weekday ", 8)==0 - && sqlite3AtoF(&z[8], &r, sqlite3Strlen30(&z[8]), SQLITE_UTF8) - && (n=(int)r)==r && n>=0 && r<7 ){ - sqlite3_int64 Z; - computeYMD_HMS(p); - p->validTZ = 0; - p->validJD = 0; - computeJD(p); - Z = ((p->iJD + 129600000)/86400000) % 7; - if( Z>n ) Z -= 7; - p->iJD += (n - Z)*86400000; - clearYMD_HMS_TZ(p); - rc = 0; - } - break; - } - case 's': { - /* - ** start of TTTTT - ** - ** Move the date backwards to the beginning of the current day, - ** or month or year. - */ - if( strncmp(z, "start of ", 9)!=0 ) break; - z += 9; - computeYMD(p); - p->validHMS = 1; - p->h = p->m = 0; - p->s = 0.0; - p->validTZ = 0; - p->validJD = 0; - if( strcmp(z,"month")==0 ){ - p->D = 1; - rc = 0; - }else if( strcmp(z,"year")==0 ){ - computeYMD(p); - p->M = 1; - p->D = 1; - rc = 0; - }else if( strcmp(z,"day")==0 ){ - rc = 0; - } - break; - } - case '+': - case '-': - case '0': - case '1': - case '2': - case '3': - case '4': - case '5': - case '6': - case '7': - case '8': - case '9': { - double rRounder; - for(n=1; z[n] && z[n]!=':' && !sqlite3Isspace(z[n]); n++){} - if( !sqlite3AtoF(z, &r, n, SQLITE_UTF8) ){ - rc = 1; - break; - } - if( z[n]==':' ){ - /* A modifier of the form (+|-)HH:MM:SS.FFF adds (or subtracts) the - ** specified number of hours, minutes, seconds, and fractional seconds - ** to the time. The ".FFF" may be omitted. The ":SS.FFF" may be - ** omitted. - */ - const char *z2 = z; - DateTime tx; - sqlite3_int64 day; - if( !sqlite3Isdigit(*z2) ) z2++; - memset(&tx, 0, sizeof(tx)); - if( parseHhMmSs(z2, &tx) ) break; - computeJD(&tx); - tx.iJD -= 43200000; - day = tx.iJD/86400000; - tx.iJD -= day*86400000; - if( z[0]=='-' ) tx.iJD = -tx.iJD; - computeJD(p); - clearYMD_HMS_TZ(p); - p->iJD += tx.iJD; - rc = 0; - break; - } - z += n; - while( sqlite3Isspace(*z) ) z++; - n = sqlite3Strlen30(z); - if( n>10 || n<3 ) break; - if( z[n-1]=='s' ){ z[n-1] = 0; n--; } - computeJD(p); - rc = 0; - rRounder = r<0 ? -0.5 : +0.5; - if( n==3 && strcmp(z,"day")==0 ){ - p->iJD += (sqlite3_int64)(r*86400000.0 + rRounder); - }else if( n==4 && strcmp(z,"hour")==0 ){ - p->iJD += (sqlite3_int64)(r*(86400000.0/24.0) + rRounder); - }else if( n==6 && strcmp(z,"minute")==0 ){ - p->iJD += (sqlite3_int64)(r*(86400000.0/(24.0*60.0)) + rRounder); - }else if( n==6 && strcmp(z,"second")==0 ){ - p->iJD += (sqlite3_int64)(r*(86400000.0/(24.0*60.0*60.0)) + rRounder); - }else if( n==5 && strcmp(z,"month")==0 ){ - int x, y; - computeYMD_HMS(p); - p->M += (int)r; - x = p->M>0 ? (p->M-1)/12 : (p->M-12)/12; - p->Y += x; - p->M -= x*12; - p->validJD = 0; - computeJD(p); - y = (int)r; - if( y!=r ){ - p->iJD += (sqlite3_int64)((r - y)*30.0*86400000.0 + rRounder); - } - }else if( n==4 && strcmp(z,"year")==0 ){ - int y = (int)r; - computeYMD_HMS(p); - p->Y += y; - p->validJD = 0; - computeJD(p); - if( y!=r ){ - p->iJD += (sqlite3_int64)((r - y)*365.0*86400000.0 + rRounder); - } - }else{ - rc = 1; - } - clearYMD_HMS_TZ(p); - break; - } - default: { - break; - } - } - return rc; -} - -/* -** Process time function arguments. argv[0] is a date-time stamp. -** argv[1] and following are modifiers. Parse them all and write -** the resulting time into the DateTime structure p. Return 0 -** on success and 1 if there are any errors. -** -** If there are zero parameters (if even argv[0] is undefined) -** then assume a default value of "now" for argv[0]. -*/ -static int isDate( - sqlite3_context *context, - int argc, - sqlite3_value **argv, - DateTime *p -){ - int i; - const unsigned char *z; - int eType; - memset(p, 0, sizeof(*p)); - if( argc==0 ){ - return setDateTimeToCurrent(context, p); - } - if( (eType = sqlite3_value_type(argv[0]))==SQLITE_FLOAT - || eType==SQLITE_INTEGER ){ - p->iJD = (sqlite3_int64)(sqlite3_value_double(argv[0])*86400000.0 + 0.5); - p->validJD = 1; - }else{ - z = sqlite3_value_text(argv[0]); - if( !z || parseDateOrTime(context, (char*)z, p) ){ - return 1; - } - } - for(i=1; iaLimit[SQLITE_LIMIT_LENGTH]+1 ); - testcase( n==(u64)db->aLimit[SQLITE_LIMIT_LENGTH] ); - if( n(u64)db->aLimit[SQLITE_LIMIT_LENGTH] ){ - sqlite3_result_error_toobig(context); - return; - }else{ - z = sqlite3DbMallocRaw(db, (int)n); - if( z==0 ){ - sqlite3_result_error_nomem(context); - return; - } - } - computeJD(&x); - computeYMD_HMS(&x); - for(i=j=0; zFmt[i]; i++){ - if( zFmt[i]!='%' ){ - z[j++] = zFmt[i]; - }else{ - i++; - switch( zFmt[i] ){ - case 'd': sqlite3_snprintf(3, &z[j],"%02d",x.D); j+=2; break; - case 'f': { - double s = x.s; - if( s>59.999 ) s = 59.999; - sqlite3_snprintf(7, &z[j],"%06.3f", s); - j += sqlite3Strlen30(&z[j]); - break; - } - case 'H': sqlite3_snprintf(3, &z[j],"%02d",x.h); j+=2; break; - case 'W': /* Fall thru */ - case 'j': { - int nDay; /* Number of days since 1st day of year */ - DateTime y = x; - y.validJD = 0; - y.M = 1; - y.D = 1; - computeJD(&y); - nDay = (int)((x.iJD-y.iJD+43200000)/86400000); - if( zFmt[i]=='W' ){ - int wd; /* 0=Monday, 1=Tuesday, ... 6=Sunday */ - wd = (int)(((x.iJD+43200000)/86400000)%7); - sqlite3_snprintf(3, &z[j],"%02d",(nDay+7-wd)/7); - j += 2; - }else{ - sqlite3_snprintf(4, &z[j],"%03d",nDay+1); - j += 3; - } - break; - } - case 'J': { - sqlite3_snprintf(20, &z[j],"%.16g",x.iJD/86400000.0); - j+=sqlite3Strlen30(&z[j]); - break; - } - case 'm': sqlite3_snprintf(3, &z[j],"%02d",x.M); j+=2; break; - case 'M': sqlite3_snprintf(3, &z[j],"%02d",x.m); j+=2; break; - case 's': { - sqlite3_snprintf(30,&z[j],"%lld", - (i64)(x.iJD/1000 - 21086676*(i64)10000)); - j += sqlite3Strlen30(&z[j]); - break; - } - case 'S': sqlite3_snprintf(3,&z[j],"%02d",(int)x.s); j+=2; break; - case 'w': { - z[j++] = (char)(((x.iJD+129600000)/86400000) % 7) + '0'; - break; - } - case 'Y': { - sqlite3_snprintf(5,&z[j],"%04d",x.Y); j+=sqlite3Strlen30(&z[j]); - break; - } - default: z[j++] = '%'; break; - } - } - } - z[j] = 0; - sqlite3_result_text(context, z, -1, - z==zBuf ? SQLITE_TRANSIENT : SQLITE_DYNAMIC); -} - -/* -** current_time() -** -** This function returns the same value as time('now'). -*/ -static void ctimeFunc( - sqlite3_context *context, - int NotUsed, - sqlite3_value **NotUsed2 -){ - UNUSED_PARAMETER2(NotUsed, NotUsed2); - timeFunc(context, 0, 0); -} - -/* -** current_date() -** -** This function returns the same value as date('now'). -*/ -static void cdateFunc( - sqlite3_context *context, - int NotUsed, - sqlite3_value **NotUsed2 -){ - UNUSED_PARAMETER2(NotUsed, NotUsed2); - dateFunc(context, 0, 0); -} - -/* -** current_timestamp() -** -** This function returns the same value as datetime('now'). -*/ -static void ctimestampFunc( - sqlite3_context *context, - int NotUsed, - sqlite3_value **NotUsed2 -){ - UNUSED_PARAMETER2(NotUsed, NotUsed2); - datetimeFunc(context, 0, 0); -} -#endif /* !defined(SQLITE_OMIT_DATETIME_FUNCS) */ - -#ifdef SQLITE_OMIT_DATETIME_FUNCS -/* -** If the library is compiled to omit the full-scale date and time -** handling (to get a smaller binary), the following minimal version -** of the functions current_time(), current_date() and current_timestamp() -** are included instead. This is to support column declarations that -** include "DEFAULT CURRENT_TIME" etc. -** -** This function uses the C-library functions time(), gmtime() -** and strftime(). The format string to pass to strftime() is supplied -** as the user-data for the function. -*/ -static void currentTimeFunc( - sqlite3_context *context, - int argc, - sqlite3_value **argv -){ - time_t t; - char *zFormat = (char *)sqlite3_user_data(context); - sqlite3 *db; - sqlite3_int64 iT; - struct tm *pTm; - struct tm sNow; - char zBuf[20]; - - UNUSED_PARAMETER(argc); - UNUSED_PARAMETER(argv); - - db = sqlite3_context_db_handle(context); - if( sqlite3OsCurrentTimeInt64(db->pVfs, &iT) ) return; - t = iT/1000 - 10000*(sqlite3_int64)21086676; -#ifdef HAVE_GMTIME_R - pTm = gmtime_r(&t, &sNow); -#else - sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)); - pTm = gmtime(&t); - if( pTm ) memcpy(&sNow, pTm, sizeof(sNow)); - sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)); -#endif - if( pTm ){ - strftime(zBuf, 20, zFormat, &sNow); - sqlite3_result_text(context, zBuf, -1, SQLITE_TRANSIENT); - } -} -#endif - -/* -** This function registered all of the above C functions as SQL -** functions. This should be the only routine in this file with -** external linkage. -*/ -void sqlite3RegisterDateTimeFunctions(void){ - static SQLITE_WSD FuncDef aDateTimeFuncs[] = { -#ifndef SQLITE_OMIT_DATETIME_FUNCS - FUNCTION(julianday, -1, 0, 0, juliandayFunc ), - FUNCTION(date, -1, 0, 0, dateFunc ), - FUNCTION(time, -1, 0, 0, timeFunc ), - FUNCTION(datetime, -1, 0, 0, datetimeFunc ), - FUNCTION(strftime, -1, 0, 0, strftimeFunc ), - FUNCTION(current_time, 0, 0, 0, ctimeFunc ), - FUNCTION(current_timestamp, 0, 0, 0, ctimestampFunc), - FUNCTION(current_date, 0, 0, 0, cdateFunc ), -#else - STR_FUNCTION(current_time, 0, "%H:%M:%S", 0, currentTimeFunc), - STR_FUNCTION(current_date, 0, "%Y-%m-%d", 0, currentTimeFunc), - STR_FUNCTION(current_timestamp, 0, "%Y-%m-%d %H:%M:%S", 0, currentTimeFunc), -#endif - }; - int i; - FuncDefHash *pHash = &GLOBAL(FuncDefHash, sqlite3GlobalFunctions); - FuncDef *aFunc = (FuncDef*)&GLOBAL(FuncDef, aDateTimeFuncs); - - for(i=0; ia[0].pTab Pointer to the Table object -** pSrc->a[0].pIndex Pointer to the INDEXED BY index, if there is one -** -*/ -Table *sqlite3SrcListLookup(Parse *pParse, SrcList *pSrc){ - struct SrcList_item *pItem = pSrc->a; - Table *pTab; - assert( pItem && pSrc->nSrc==1 ); - pTab = sqlite3LocateTable(pParse, 0, pItem->zName, pItem->zDatabase); - sqlite3DeleteTable(pParse->db, pItem->pTab); - pItem->pTab = pTab; - if( pTab ){ - pTab->nRef++; - } - if( sqlite3IndexedByLookup(pParse, pItem) ){ - pTab = 0; - } - return pTab; -} - -/* -** Check to make sure the given table is writable. If it is not -** writable, generate an error message and return 1. If it is -** writable return 0; -*/ -int sqlite3IsReadOnly(Parse *pParse, Table *pTab, int viewOk){ - /* A table is not writable under the following circumstances: - ** - ** 1) It is a virtual table and no implementation of the xUpdate method - ** has been provided, or - ** 2) It is a system table (i.e. sqlite_master), this call is not - ** part of a nested parse and writable_schema pragma has not - ** been specified. - ** - ** In either case leave an error message in pParse and return non-zero. - */ - if( ( IsVirtual(pTab) - && sqlite3GetVTable(pParse->db, pTab)->pMod->pModule->xUpdate==0 ) - || ( (pTab->tabFlags & TF_Readonly)!=0 - && (pParse->db->flags & SQLITE_WriteSchema)==0 - && pParse->nested==0 ) - ){ - sqlite3ErrorMsg(pParse, "table %s may not be modified", pTab->zName); - return 1; - } - -#ifndef SQLITE_OMIT_VIEW - if( !viewOk && pTab->pSelect ){ - sqlite3ErrorMsg(pParse,"cannot modify %s because it is a view",pTab->zName); - return 1; - } -#endif - return 0; -} - - -#if !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER) -/* -** Evaluate a view and store its result in an ephemeral table. The -** pWhere argument is an optional WHERE clause that restricts the -** set of rows in the view that are to be added to the ephemeral table. -*/ -void sqlite3MaterializeView( - Parse *pParse, /* Parsing context */ - Table *pView, /* View definition */ - Expr *pWhere, /* Optional WHERE clause to be added */ - int iCur /* Cursor number for ephemerial table */ -){ - SelectDest dest; - Select *pDup; - sqlite3 *db = pParse->db; - - pDup = sqlite3SelectDup(db, pView->pSelect, 0); - if( pWhere ){ - SrcList *pFrom; - - pWhere = sqlite3ExprDup(db, pWhere, 0); - pFrom = sqlite3SrcListAppend(db, 0, 0, 0); - if( pFrom ){ - assert( pFrom->nSrc==1 ); - pFrom->a[0].zAlias = sqlite3DbStrDup(db, pView->zName); - pFrom->a[0].pSelect = pDup; - assert( pFrom->a[0].pOn==0 ); - assert( pFrom->a[0].pUsing==0 ); - }else{ - sqlite3SelectDelete(db, pDup); - } - pDup = sqlite3SelectNew(pParse, 0, pFrom, pWhere, 0, 0, 0, 0, 0, 0); - } - sqlite3SelectDestInit(&dest, SRT_EphemTab, iCur); - sqlite3Select(pParse, pDup, &dest); - sqlite3SelectDelete(db, pDup); -} -#endif /* !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER) */ - -#if defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) && !defined(SQLITE_OMIT_SUBQUERY) -/* -** Generate an expression tree to implement the WHERE, ORDER BY, -** and LIMIT/OFFSET portion of DELETE and UPDATE statements. -** -** DELETE FROM table_wxyz WHERE a<5 ORDER BY a LIMIT 1; -** \__________________________/ -** pLimitWhere (pInClause) -*/ -Expr *sqlite3LimitWhere( - Parse *pParse, /* The parser context */ - SrcList *pSrc, /* the FROM clause -- which tables to scan */ - Expr *pWhere, /* The WHERE clause. May be null */ - ExprList *pOrderBy, /* The ORDER BY clause. May be null */ - Expr *pLimit, /* The LIMIT clause. May be null */ - Expr *pOffset, /* The OFFSET clause. May be null */ - char *zStmtType /* Either DELETE or UPDATE. For error messages. */ -){ - Expr *pWhereRowid = NULL; /* WHERE rowid .. */ - Expr *pInClause = NULL; /* WHERE rowid IN ( select ) */ - Expr *pSelectRowid = NULL; /* SELECT rowid ... */ - ExprList *pEList = NULL; /* Expression list contaning only pSelectRowid */ - SrcList *pSelectSrc = NULL; /* SELECT rowid FROM x ... (dup of pSrc) */ - Select *pSelect = NULL; /* Complete SELECT tree */ - - /* Check that there isn't an ORDER BY without a LIMIT clause. - */ - if( pOrderBy && (pLimit == 0) ) { - sqlite3ErrorMsg(pParse, "ORDER BY without LIMIT on %s", zStmtType); - pParse->parseError = 1; - goto limit_where_cleanup_2; - } - - /* We only need to generate a select expression if there - ** is a limit/offset term to enforce. - */ - if( pLimit == 0 ) { - /* if pLimit is null, pOffset will always be null as well. */ - assert( pOffset == 0 ); - return pWhere; - } - - /* Generate a select expression tree to enforce the limit/offset - ** term for the DELETE or UPDATE statement. For example: - ** DELETE FROM table_a WHERE col1=1 ORDER BY col2 LIMIT 1 OFFSET 1 - ** becomes: - ** DELETE FROM table_a WHERE rowid IN ( - ** SELECT rowid FROM table_a WHERE col1=1 ORDER BY col2 LIMIT 1 OFFSET 1 - ** ); - */ - - pSelectRowid = sqlite3PExpr(pParse, TK_ROW, 0, 0, 0); - if( pSelectRowid == 0 ) goto limit_where_cleanup_2; - pEList = sqlite3ExprListAppend(pParse, 0, pSelectRowid); - if( pEList == 0 ) goto limit_where_cleanup_2; - - /* duplicate the FROM clause as it is needed by both the DELETE/UPDATE tree - ** and the SELECT subtree. */ - pSelectSrc = sqlite3SrcListDup(pParse->db, pSrc, 0); - if( pSelectSrc == 0 ) { - sqlite3ExprListDelete(pParse->db, pEList); - goto limit_where_cleanup_2; - } - - /* generate the SELECT expression tree. */ - pSelect = sqlite3SelectNew(pParse,pEList,pSelectSrc,pWhere,0,0, - pOrderBy,0,pLimit,pOffset); - if( pSelect == 0 ) return 0; - - /* now generate the new WHERE rowid IN clause for the DELETE/UDPATE */ - pWhereRowid = sqlite3PExpr(pParse, TK_ROW, 0, 0, 0); - if( pWhereRowid == 0 ) goto limit_where_cleanup_1; - pInClause = sqlite3PExpr(pParse, TK_IN, pWhereRowid, 0, 0); - if( pInClause == 0 ) goto limit_where_cleanup_1; - - pInClause->x.pSelect = pSelect; - pInClause->flags |= EP_xIsSelect; - sqlite3ExprSetHeight(pParse, pInClause); - return pInClause; - - /* something went wrong. clean up anything allocated. */ -limit_where_cleanup_1: - sqlite3SelectDelete(pParse->db, pSelect); - return 0; - -limit_where_cleanup_2: - sqlite3ExprDelete(pParse->db, pWhere); - sqlite3ExprListDelete(pParse->db, pOrderBy); - sqlite3ExprDelete(pParse->db, pLimit); - sqlite3ExprDelete(pParse->db, pOffset); - return 0; -} -#endif /* defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) && !defined(SQLITE_OMIT_SUBQUERY) */ - -/* -** Generate code for a DELETE FROM statement. -** -** DELETE FROM table_wxyz WHERE a<5 AND b NOT NULL; -** \________/ \________________/ -** pTabList pWhere -*/ -void sqlite3DeleteFrom( - Parse *pParse, /* The parser context */ - SrcList *pTabList, /* The table from which we should delete things */ - Expr *pWhere /* The WHERE clause. May be null */ -){ - Vdbe *v; /* The virtual database engine */ - Table *pTab; /* The table from which records will be deleted */ - const char *zDb; /* Name of database holding pTab */ - int end, addr = 0; /* A couple addresses of generated code */ - int i; /* Loop counter */ - WhereInfo *pWInfo; /* Information about the WHERE clause */ - Index *pIdx; /* For looping over indices of the table */ - int iCur; /* VDBE Cursor number for pTab */ - sqlite3 *db; /* Main database structure */ - AuthContext sContext; /* Authorization context */ - NameContext sNC; /* Name context to resolve expressions in */ - int iDb; /* Database number */ - int memCnt = -1; /* Memory cell used for change counting */ - int rcauth; /* Value returned by authorization callback */ - -#ifndef SQLITE_OMIT_TRIGGER - int isView; /* True if attempting to delete from a view */ - Trigger *pTrigger; /* List of table triggers, if required */ -#endif - - memset(&sContext, 0, sizeof(sContext)); - db = pParse->db; - if( pParse->nErr || db->mallocFailed ){ - goto delete_from_cleanup; - } - assert( pTabList->nSrc==1 ); - - /* Locate the table which we want to delete. This table has to be - ** put in an SrcList structure because some of the subroutines we - ** will be calling are designed to work with multiple tables and expect - ** an SrcList* parameter instead of just a Table* parameter. - */ - pTab = sqlite3SrcListLookup(pParse, pTabList); - if( pTab==0 ) goto delete_from_cleanup; - - /* Figure out if we have any triggers and if the table being - ** deleted from is a view - */ -#ifndef SQLITE_OMIT_TRIGGER - pTrigger = sqlite3TriggersExist(pParse, pTab, TK_DELETE, 0, 0); - isView = pTab->pSelect!=0; -#else -# define pTrigger 0 -# define isView 0 -#endif -#ifdef SQLITE_OMIT_VIEW -# undef isView -# define isView 0 -#endif - - /* If pTab is really a view, make sure it has been initialized. - */ - if( sqlite3ViewGetColumnNames(pParse, pTab) ){ - goto delete_from_cleanup; - } - - if( sqlite3IsReadOnly(pParse, pTab, (pTrigger?1:0)) ){ - goto delete_from_cleanup; - } - iDb = sqlite3SchemaToIndex(db, pTab->pSchema); - assert( iDbnDb ); - zDb = db->aDb[iDb].zName; - rcauth = sqlite3AuthCheck(pParse, SQLITE_DELETE, pTab->zName, 0, zDb); - assert( rcauth==SQLITE_OK || rcauth==SQLITE_DENY || rcauth==SQLITE_IGNORE ); - if( rcauth==SQLITE_DENY ){ - goto delete_from_cleanup; - } - assert(!isView || pTrigger); - - /* Assign cursor number to the table and all its indices. - */ - assert( pTabList->nSrc==1 ); - iCur = pTabList->a[0].iCursor = pParse->nTab++; - for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ - pParse->nTab++; - } - - /* Start the view context - */ - if( isView ){ - sqlite3AuthContextPush(pParse, &sContext, pTab->zName); - } - - /* Begin generating code. - */ - v = sqlite3GetVdbe(pParse); - if( v==0 ){ - goto delete_from_cleanup; - } - if( pParse->nested==0 ) sqlite3VdbeCountChanges(v); - sqlite3BeginWriteOperation(pParse, 1, iDb); - - /* If we are trying to delete from a view, realize that view into - ** a ephemeral table. - */ -#if !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER) - if( isView ){ - sqlite3MaterializeView(pParse, pTab, pWhere, iCur); - } -#endif - - /* Resolve the column names in the WHERE clause. - */ - memset(&sNC, 0, sizeof(sNC)); - sNC.pParse = pParse; - sNC.pSrcList = pTabList; - if( sqlite3ResolveExprNames(&sNC, pWhere) ){ - goto delete_from_cleanup; - } - - /* Initialize the counter of the number of rows deleted, if - ** we are counting rows. - */ - if( db->flags & SQLITE_CountRows ){ - memCnt = ++pParse->nMem; - sqlite3VdbeAddOp2(v, OP_Integer, 0, memCnt); - } - -#ifndef SQLITE_OMIT_TRUNCATE_OPTIMIZATION - /* Special case: A DELETE without a WHERE clause deletes everything. - ** It is easier just to erase the whole table. Prior to version 3.6.5, - ** this optimization caused the row change count (the value returned by - ** API function sqlite3_count_changes) to be set incorrectly. */ - if( rcauth==SQLITE_OK && pWhere==0 && !pTrigger && !IsVirtual(pTab) - && 0==sqlite3FkRequired(pParse, pTab, 0, 0) - ){ - assert( !isView ); - sqlite3VdbeAddOp4(v, OP_Clear, pTab->tnum, iDb, memCnt, - pTab->zName, P4_STATIC); - for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ - assert( pIdx->pSchema==pTab->pSchema ); - sqlite3VdbeAddOp2(v, OP_Clear, pIdx->tnum, iDb); - } - }else -#endif /* SQLITE_OMIT_TRUNCATE_OPTIMIZATION */ - /* The usual case: There is a WHERE clause so we have to scan through - ** the table and pick which records to delete. - */ - { - int iRowSet = ++pParse->nMem; /* Register for rowset of rows to delete */ - int iRowid = ++pParse->nMem; /* Used for storing rowid values. */ - int regRowid; /* Actual register containing rowids */ - - /* Collect rowids of every row to be deleted. - */ - sqlite3VdbeAddOp2(v, OP_Null, 0, iRowSet); - pWInfo = sqlite3WhereBegin( - pParse, pTabList, pWhere, 0, 0, WHERE_DUPLICATES_OK - ); - if( pWInfo==0 ) goto delete_from_cleanup; - regRowid = sqlite3ExprCodeGetColumn(pParse, pTab, -1, iCur, iRowid); - sqlite3VdbeAddOp2(v, OP_RowSetAdd, iRowSet, regRowid); - if( db->flags & SQLITE_CountRows ){ - sqlite3VdbeAddOp2(v, OP_AddImm, memCnt, 1); - } - sqlite3WhereEnd(pWInfo); - - /* Delete every item whose key was written to the list during the - ** database scan. We have to delete items after the scan is complete - ** because deleting an item can change the scan order. */ - end = sqlite3VdbeMakeLabel(v); - - /* Unless this is a view, open cursors for the table we are - ** deleting from and all its indices. If this is a view, then the - ** only effect this statement has is to fire the INSTEAD OF - ** triggers. */ - if( !isView ){ - sqlite3OpenTableAndIndices(pParse, pTab, iCur, OP_OpenWrite); - } - - addr = sqlite3VdbeAddOp3(v, OP_RowSetRead, iRowSet, end, iRowid); - - /* Delete the row */ -#ifndef SQLITE_OMIT_VIRTUALTABLE - if( IsVirtual(pTab) ){ - const char *pVTab = (const char *)sqlite3GetVTable(db, pTab); - sqlite3VtabMakeWritable(pParse, pTab); - sqlite3VdbeAddOp4(v, OP_VUpdate, 0, 1, iRowid, pVTab, P4_VTAB); - sqlite3VdbeChangeP5(v, OE_Abort); - sqlite3MayAbort(pParse); - }else -#endif - { - int count = (pParse->nested==0); /* True to count changes */ - sqlite3GenerateRowDelete(pParse, pTab, iCur, iRowid, count, pTrigger, OE_Default); - } - - /* End of the delete loop */ - sqlite3VdbeAddOp2(v, OP_Goto, 0, addr); - sqlite3VdbeResolveLabel(v, end); - - /* Close the cursors open on the table and its indexes. */ - if( !isView && !IsVirtual(pTab) ){ - for(i=1, pIdx=pTab->pIndex; pIdx; i++, pIdx=pIdx->pNext){ - sqlite3VdbeAddOp2(v, OP_Close, iCur + i, pIdx->tnum); - } - sqlite3VdbeAddOp1(v, OP_Close, iCur); - } - } - - /* Update the sqlite_sequence table by storing the content of the - ** maximum rowid counter values recorded while inserting into - ** autoincrement tables. - */ - if( pParse->nested==0 && pParse->pTriggerTab==0 ){ - sqlite3AutoincrementEnd(pParse); - } - - /* Return the number of rows that were deleted. If this routine is - ** generating code because of a call to sqlite3NestedParse(), do not - ** invoke the callback function. - */ - if( (db->flags&SQLITE_CountRows) && !pParse->nested && !pParse->pTriggerTab ){ - sqlite3VdbeAddOp2(v, OP_ResultRow, memCnt, 1); - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "rows deleted", SQLITE_STATIC); - } - -delete_from_cleanup: - sqlite3AuthContextPop(&sContext); - sqlite3SrcListDelete(db, pTabList); - sqlite3ExprDelete(db, pWhere); - return; -} -/* Make sure "isView" and other macros defined above are undefined. Otherwise -** thely may interfere with compilation of other functions in this file -** (or in another file, if this file becomes part of the amalgamation). */ -#ifdef isView - #undef isView -#endif -#ifdef pTrigger - #undef pTrigger -#endif - -/* -** This routine generates VDBE code that causes a single row of a -** single table to be deleted. -** -** The VDBE must be in a particular state when this routine is called. -** These are the requirements: -** -** 1. A read/write cursor pointing to pTab, the table containing the row -** to be deleted, must be opened as cursor number $iCur. -** -** 2. Read/write cursors for all indices of pTab must be open as -** cursor number base+i for the i-th index. -** -** 3. The record number of the row to be deleted must be stored in -** memory cell iRowid. -** -** This routine generates code to remove both the table record and all -** index entries that point to that record. -*/ -void sqlite3GenerateRowDelete( - Parse *pParse, /* Parsing context */ - Table *pTab, /* Table containing the row to be deleted */ - int iCur, /* Cursor number for the table */ - int iRowid, /* Memory cell that contains the rowid to delete */ - int count, /* If non-zero, increment the row change counter */ - Trigger *pTrigger, /* List of triggers to (potentially) fire */ - int onconf /* Default ON CONFLICT policy for triggers */ -){ - Vdbe *v = pParse->pVdbe; /* Vdbe */ - int iOld = 0; /* First register in OLD.* array */ - int iLabel; /* Label resolved to end of generated code */ - - /* Vdbe is guaranteed to have been allocated by this stage. */ - assert( v ); - - /* Seek cursor iCur to the row to delete. If this row no longer exists - ** (this can happen if a trigger program has already deleted it), do - ** not attempt to delete it or fire any DELETE triggers. */ - iLabel = sqlite3VdbeMakeLabel(v); - sqlite3VdbeAddOp3(v, OP_NotExists, iCur, iLabel, iRowid); - - /* If there are any triggers to fire, allocate a range of registers to - ** use for the old.* references in the triggers. */ - if( sqlite3FkRequired(pParse, pTab, 0, 0) || pTrigger ){ - u32 mask; /* Mask of OLD.* columns in use */ - int iCol; /* Iterator used while populating OLD.* */ - - /* TODO: Could use temporary registers here. Also could attempt to - ** avoid copying the contents of the rowid register. */ - mask = sqlite3TriggerColmask( - pParse, pTrigger, 0, 0, TRIGGER_BEFORE|TRIGGER_AFTER, pTab, onconf - ); - mask |= sqlite3FkOldmask(pParse, pTab); - iOld = pParse->nMem+1; - pParse->nMem += (1 + pTab->nCol); - - /* Populate the OLD.* pseudo-table register array. These values will be - ** used by any BEFORE and AFTER triggers that exist. */ - sqlite3VdbeAddOp2(v, OP_Copy, iRowid, iOld); - for(iCol=0; iColnCol; iCol++){ - if( mask==0xffffffff || mask&(1<pSelect==0 ){ - sqlite3GenerateRowIndexDelete(pParse, pTab, iCur, 0); - sqlite3VdbeAddOp2(v, OP_Delete, iCur, (count?OPFLAG_NCHANGE:0)); - if( count ){ - sqlite3VdbeChangeP4(v, -1, pTab->zName, P4_TRANSIENT); - } - } - - /* Do any ON CASCADE, SET NULL or SET DEFAULT operations required to - ** handle rows (possibly in other tables) that refer via a foreign key - ** to the row just deleted. */ - sqlite3FkActions(pParse, pTab, 0, iOld); - - /* Invoke AFTER DELETE trigger programs. */ - sqlite3CodeRowTrigger(pParse, pTrigger, - TK_DELETE, 0, TRIGGER_AFTER, pTab, iOld, onconf, iLabel - ); - - /* Jump here if the row had already been deleted before any BEFORE - ** trigger programs were invoked. Or if a trigger program throws a - ** RAISE(IGNORE) exception. */ - sqlite3VdbeResolveLabel(v, iLabel); -} - -/* -** This routine generates VDBE code that causes the deletion of all -** index entries associated with a single row of a single table. -** -** The VDBE must be in a particular state when this routine is called. -** These are the requirements: -** -** 1. A read/write cursor pointing to pTab, the table containing the row -** to be deleted, must be opened as cursor number "iCur". -** -** 2. Read/write cursors for all indices of pTab must be open as -** cursor number iCur+i for the i-th index. -** -** 3. The "iCur" cursor must be pointing to the row that is to be -** deleted. -*/ -void sqlite3GenerateRowIndexDelete( - Parse *pParse, /* Parsing and code generating context */ - Table *pTab, /* Table containing the row to be deleted */ - int iCur, /* Cursor number for the table */ - int *aRegIdx /* Only delete if aRegIdx!=0 && aRegIdx[i]>0 */ -){ - int i; - Index *pIdx; - int r1; - - for(i=1, pIdx=pTab->pIndex; pIdx; i++, pIdx=pIdx->pNext){ - if( aRegIdx!=0 && aRegIdx[i-1]==0 ) continue; - r1 = sqlite3GenerateIndexKey(pParse, pIdx, iCur, 0, 0); - sqlite3VdbeAddOp3(pParse->pVdbe, OP_IdxDelete, iCur+i, r1,pIdx->nColumn+1); - } -} - -/* -** Generate code that will assemble an index key and put it in register -** regOut. The key with be for index pIdx which is an index on pTab. -** iCur is the index of a cursor open on the pTab table and pointing to -** the entry that needs indexing. -** -** Return a register number which is the first in a block of -** registers that holds the elements of the index key. The -** block of registers has already been deallocated by the time -** this routine returns. -*/ -int sqlite3GenerateIndexKey( - Parse *pParse, /* Parsing context */ - Index *pIdx, /* The index for which to generate a key */ - int iCur, /* Cursor number for the pIdx->pTable table */ - int regOut, /* Write the new index key to this register */ - int doMakeRec /* Run the OP_MakeRecord instruction if true */ -){ - Vdbe *v = pParse->pVdbe; - int j; - Table *pTab = pIdx->pTable; - int regBase; - int nCol; - - nCol = pIdx->nColumn; - regBase = sqlite3GetTempRange(pParse, nCol+1); - sqlite3VdbeAddOp2(v, OP_Rowid, iCur, regBase+nCol); - for(j=0; jaiColumn[j]; - if( idx==pTab->iPKey ){ - sqlite3VdbeAddOp2(v, OP_SCopy, regBase+nCol, regBase+j); - }else{ - sqlite3VdbeAddOp3(v, OP_Column, iCur, idx, regBase+j); - sqlite3ColumnDefault(v, pTab, idx, -1); - } - } - if( doMakeRec ){ - const char *zAff; - if( pTab->pSelect || (pParse->db->flags & SQLITE_IdxRealAsInt)!=0 ){ - zAff = 0; - }else{ - zAff = sqlite3IndexAffinityStr(v, pIdx); - } - sqlite3VdbeAddOp3(v, OP_MakeRecord, regBase, nCol+1, regOut); - sqlite3VdbeChangeP4(v, -1, zAff, P4_TRANSIENT); - } - sqlite3ReleaseTempRange(pParse, regBase, nCol+1); - return regBase; -} diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/expr.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/expr.c deleted file mode 100644 index a534127476..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/expr.c +++ /dev/null @@ -1,3764 +0,0 @@ -/* -** 2001 September 15 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file contains routines used for analyzing expressions and -** for generating VDBE code that evaluates expressions in SQLite. -*/ -#include "sqliteInt.h" - -/* -** Return the 'affinity' of the expression pExpr if any. -** -** If pExpr is a column, a reference to a column via an 'AS' alias, -** or a sub-select with a column as the return value, then the -** affinity of that column is returned. Otherwise, 0x00 is returned, -** indicating no affinity for the expression. -** -** i.e. the WHERE clause expresssions in the following statements all -** have an affinity: -** -** CREATE TABLE t1(a); -** SELECT * FROM t1 WHERE a; -** SELECT a AS b FROM t1 WHERE b; -** SELECT * FROM t1 WHERE (select a from t1); -*/ -char sqlite3ExprAffinity(Expr *pExpr){ - int op = pExpr->op; - if( op==TK_SELECT ){ - assert( pExpr->flags&EP_xIsSelect ); - return sqlite3ExprAffinity(pExpr->x.pSelect->pEList->a[0].pExpr); - } -#ifndef SQLITE_OMIT_CAST - if( op==TK_CAST ){ - assert( !ExprHasProperty(pExpr, EP_IntValue) ); - return sqlite3AffinityType(pExpr->u.zToken); - } -#endif - if( (op==TK_AGG_COLUMN || op==TK_COLUMN || op==TK_REGISTER) - && pExpr->pTab!=0 - ){ - /* op==TK_REGISTER && pExpr->pTab!=0 happens when pExpr was originally - ** a TK_COLUMN but was previously evaluated and cached in a register */ - int j = pExpr->iColumn; - if( j<0 ) return SQLITE_AFF_INTEGER; - assert( pExpr->pTab && jpTab->nCol ); - return pExpr->pTab->aCol[j].affinity; - } - return pExpr->affinity; -} - -/* -** Set the explicit collating sequence for an expression to the -** collating sequence supplied in the second argument. -*/ -Expr *sqlite3ExprSetColl(Expr *pExpr, CollSeq *pColl){ - if( pExpr && pColl ){ - pExpr->pColl = pColl; - pExpr->flags |= EP_ExpCollate; - } - return pExpr; -} - -/* -** Set the collating sequence for expression pExpr to be the collating -** sequence named by pToken. Return a pointer to the revised expression. -** The collating sequence is marked as "explicit" using the EP_ExpCollate -** flag. An explicit collating sequence will override implicit -** collating sequences. -*/ -Expr *sqlite3ExprSetCollByToken(Parse *pParse, Expr *pExpr, Token *pCollName){ - char *zColl = 0; /* Dequoted name of collation sequence */ - CollSeq *pColl; - sqlite3 *db = pParse->db; - zColl = sqlite3NameFromToken(db, pCollName); - pColl = sqlite3LocateCollSeq(pParse, zColl); - sqlite3ExprSetColl(pExpr, pColl); - sqlite3DbFree(db, zColl); - return pExpr; -} - -/* -** Return the default collation sequence for the expression pExpr. If -** there is no default collation type, return 0. -*/ -CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr){ - CollSeq *pColl = 0; - Expr *p = pExpr; - while( p ){ - int op; - pColl = p->pColl; - if( pColl ) break; - op = p->op; - if( p->pTab!=0 && ( - op==TK_AGG_COLUMN || op==TK_COLUMN || op==TK_REGISTER || op==TK_TRIGGER - )){ - /* op==TK_REGISTER && p->pTab!=0 happens when pExpr was originally - ** a TK_COLUMN but was previously evaluated and cached in a register */ - const char *zColl; - int j = p->iColumn; - if( j>=0 ){ - sqlite3 *db = pParse->db; - zColl = p->pTab->aCol[j].zColl; - pColl = sqlite3FindCollSeq(db, ENC(db), zColl, 0); - pExpr->pColl = pColl; - } - break; - } - if( op!=TK_CAST && op!=TK_UPLUS ){ - break; - } - p = p->pLeft; - } - if( sqlite3CheckCollSeq(pParse, pColl) ){ - pColl = 0; - } - return pColl; -} - -/* -** pExpr is an operand of a comparison operator. aff2 is the -** type affinity of the other operand. This routine returns the -** type affinity that should be used for the comparison operator. -*/ -char sqlite3CompareAffinity(Expr *pExpr, char aff2){ - char aff1 = sqlite3ExprAffinity(pExpr); - if( aff1 && aff2 ){ - /* Both sides of the comparison are columns. If one has numeric - ** affinity, use that. Otherwise use no affinity. - */ - if( sqlite3IsNumericAffinity(aff1) || sqlite3IsNumericAffinity(aff2) ){ - return SQLITE_AFF_NUMERIC; - }else{ - return SQLITE_AFF_NONE; - } - }else if( !aff1 && !aff2 ){ - /* Neither side of the comparison is a column. Compare the - ** results directly. - */ - return SQLITE_AFF_NONE; - }else{ - /* One side is a column, the other is not. Use the columns affinity. */ - assert( aff1==0 || aff2==0 ); - return (aff1 + aff2); - } -} - -/* -** pExpr is a comparison operator. Return the type affinity that should -** be applied to both operands prior to doing the comparison. -*/ -static char comparisonAffinity(Expr *pExpr){ - char aff; - assert( pExpr->op==TK_EQ || pExpr->op==TK_IN || pExpr->op==TK_LT || - pExpr->op==TK_GT || pExpr->op==TK_GE || pExpr->op==TK_LE || - pExpr->op==TK_NE || pExpr->op==TK_IS || pExpr->op==TK_ISNOT ); - assert( pExpr->pLeft ); - aff = sqlite3ExprAffinity(pExpr->pLeft); - if( pExpr->pRight ){ - aff = sqlite3CompareAffinity(pExpr->pRight, aff); - }else if( ExprHasProperty(pExpr, EP_xIsSelect) ){ - aff = sqlite3CompareAffinity(pExpr->x.pSelect->pEList->a[0].pExpr, aff); - }else if( !aff ){ - aff = SQLITE_AFF_NONE; - } - return aff; -} - -/* -** pExpr is a comparison expression, eg. '=', '<', IN(...) etc. -** idx_affinity is the affinity of an indexed column. Return true -** if the index with affinity idx_affinity may be used to implement -** the comparison in pExpr. -*/ -int sqlite3IndexAffinityOk(Expr *pExpr, char idx_affinity){ - char aff = comparisonAffinity(pExpr); - switch( aff ){ - case SQLITE_AFF_NONE: - return 1; - case SQLITE_AFF_TEXT: - return idx_affinity==SQLITE_AFF_TEXT; - default: - return sqlite3IsNumericAffinity(idx_affinity); - } -} - -/* -** Return the P5 value that should be used for a binary comparison -** opcode (OP_Eq, OP_Ge etc.) used to compare pExpr1 and pExpr2. -*/ -static u8 binaryCompareP5(Expr *pExpr1, Expr *pExpr2, int jumpIfNull){ - u8 aff = (char)sqlite3ExprAffinity(pExpr2); - aff = (u8)sqlite3CompareAffinity(pExpr1, aff) | (u8)jumpIfNull; - return aff; -} - -/* -** Return a pointer to the collation sequence that should be used by -** a binary comparison operator comparing pLeft and pRight. -** -** If the left hand expression has a collating sequence type, then it is -** used. Otherwise the collation sequence for the right hand expression -** is used, or the default (BINARY) if neither expression has a collating -** type. -** -** Argument pRight (but not pLeft) may be a null pointer. In this case, -** it is not considered. -*/ -CollSeq *sqlite3BinaryCompareCollSeq( - Parse *pParse, - Expr *pLeft, - Expr *pRight -){ - CollSeq *pColl; - assert( pLeft ); - if( pLeft->flags & EP_ExpCollate ){ - assert( pLeft->pColl ); - pColl = pLeft->pColl; - }else if( pRight && pRight->flags & EP_ExpCollate ){ - assert( pRight->pColl ); - pColl = pRight->pColl; - }else{ - pColl = sqlite3ExprCollSeq(pParse, pLeft); - if( !pColl ){ - pColl = sqlite3ExprCollSeq(pParse, pRight); - } - } - return pColl; -} - -/* -** Generate code for a comparison operator. -*/ -static int codeCompare( - Parse *pParse, /* The parsing (and code generating) context */ - Expr *pLeft, /* The left operand */ - Expr *pRight, /* The right operand */ - int opcode, /* The comparison opcode */ - int in1, int in2, /* Register holding operands */ - int dest, /* Jump here if true. */ - int jumpIfNull /* If true, jump if either operand is NULL */ -){ - int p5; - int addr; - CollSeq *p4; - - p4 = sqlite3BinaryCompareCollSeq(pParse, pLeft, pRight); - p5 = binaryCompareP5(pLeft, pRight, jumpIfNull); - addr = sqlite3VdbeAddOp4(pParse->pVdbe, opcode, in2, dest, in1, - (void*)p4, P4_COLLSEQ); - sqlite3VdbeChangeP5(pParse->pVdbe, (u8)p5); - return addr; -} - -#if SQLITE_MAX_EXPR_DEPTH>0 -/* -** Check that argument nHeight is less than or equal to the maximum -** expression depth allowed. If it is not, leave an error message in -** pParse. -*/ -int sqlite3ExprCheckHeight(Parse *pParse, int nHeight){ - int rc = SQLITE_OK; - int mxHeight = pParse->db->aLimit[SQLITE_LIMIT_EXPR_DEPTH]; - if( nHeight>mxHeight ){ - sqlite3ErrorMsg(pParse, - "Expression tree is too large (maximum depth %d)", mxHeight - ); - rc = SQLITE_ERROR; - } - return rc; -} - -/* The following three functions, heightOfExpr(), heightOfExprList() -** and heightOfSelect(), are used to determine the maximum height -** of any expression tree referenced by the structure passed as the -** first argument. -** -** If this maximum height is greater than the current value pointed -** to by pnHeight, the second parameter, then set *pnHeight to that -** value. -*/ -static void heightOfExpr(Expr *p, int *pnHeight){ - if( p ){ - if( p->nHeight>*pnHeight ){ - *pnHeight = p->nHeight; - } - } -} -static void heightOfExprList(ExprList *p, int *pnHeight){ - if( p ){ - int i; - for(i=0; inExpr; i++){ - heightOfExpr(p->a[i].pExpr, pnHeight); - } - } -} -static void heightOfSelect(Select *p, int *pnHeight){ - if( p ){ - heightOfExpr(p->pWhere, pnHeight); - heightOfExpr(p->pHaving, pnHeight); - heightOfExpr(p->pLimit, pnHeight); - heightOfExpr(p->pOffset, pnHeight); - heightOfExprList(p->pEList, pnHeight); - heightOfExprList(p->pGroupBy, pnHeight); - heightOfExprList(p->pOrderBy, pnHeight); - heightOfSelect(p->pPrior, pnHeight); - } -} - -/* -** Set the Expr.nHeight variable in the structure passed as an -** argument. An expression with no children, Expr.pList or -** Expr.pSelect member has a height of 1. Any other expression -** has a height equal to the maximum height of any other -** referenced Expr plus one. -*/ -static void exprSetHeight(Expr *p){ - int nHeight = 0; - heightOfExpr(p->pLeft, &nHeight); - heightOfExpr(p->pRight, &nHeight); - if( ExprHasProperty(p, EP_xIsSelect) ){ - heightOfSelect(p->x.pSelect, &nHeight); - }else{ - heightOfExprList(p->x.pList, &nHeight); - } - p->nHeight = nHeight + 1; -} - -/* -** Set the Expr.nHeight variable using the exprSetHeight() function. If -** the height is greater than the maximum allowed expression depth, -** leave an error in pParse. -*/ -void sqlite3ExprSetHeight(Parse *pParse, Expr *p){ - exprSetHeight(p); - sqlite3ExprCheckHeight(pParse, p->nHeight); -} - -/* -** Return the maximum height of any expression tree referenced -** by the select statement passed as an argument. -*/ -int sqlite3SelectExprHeight(Select *p){ - int nHeight = 0; - heightOfSelect(p, &nHeight); - return nHeight; -} -#else - #define exprSetHeight(y) -#endif /* SQLITE_MAX_EXPR_DEPTH>0 */ - -/* -** This routine is the core allocator for Expr nodes. -** -** Construct a new expression node and return a pointer to it. Memory -** for this node and for the pToken argument is a single allocation -** obtained from sqlite3DbMalloc(). The calling function -** is responsible for making sure the node eventually gets freed. -** -** If dequote is true, then the token (if it exists) is dequoted. -** If dequote is false, no dequoting is performance. The deQuote -** parameter is ignored if pToken is NULL or if the token does not -** appear to be quoted. If the quotes were of the form "..." (double-quotes) -** then the EP_DblQuoted flag is set on the expression node. -** -** Special case: If op==TK_INTEGER and pToken points to a string that -** can be translated into a 32-bit integer, then the token is not -** stored in u.zToken. Instead, the integer values is written -** into u.iValue and the EP_IntValue flag is set. No extra storage -** is allocated to hold the integer text and the dequote flag is ignored. -*/ -Expr *sqlite3ExprAlloc( - sqlite3 *db, /* Handle for sqlite3DbMallocZero() (may be null) */ - int op, /* Expression opcode */ - const Token *pToken, /* Token argument. Might be NULL */ - int dequote /* True to dequote */ -){ - Expr *pNew; - int nExtra = 0; - int iValue = 0; - - if( pToken ){ - if( op!=TK_INTEGER || pToken->z==0 - || sqlite3GetInt32(pToken->z, &iValue)==0 ){ - nExtra = pToken->n+1; - assert( iValue>=0 ); - } - } - pNew = sqlite3DbMallocZero(db, sizeof(Expr)+nExtra); - if( pNew ){ - pNew->op = (u8)op; - pNew->iAgg = -1; - if( pToken ){ - if( nExtra==0 ){ - pNew->flags |= EP_IntValue; - pNew->u.iValue = iValue; - }else{ - int c; - pNew->u.zToken = (char*)&pNew[1]; - assert( pToken->z!=0 || pToken->n==0 ); - if( pToken->n ) memcpy(pNew->u.zToken, pToken->z, pToken->n); - pNew->u.zToken[pToken->n] = 0; - if( dequote && nExtra>=3 - && ((c = pToken->z[0])=='\'' || c=='"' || c=='[' || c=='`') ){ - sqlite3Dequote(pNew->u.zToken); - if( c=='"' ) pNew->flags |= EP_DblQuoted; - } - } - } -#if SQLITE_MAX_EXPR_DEPTH>0 - pNew->nHeight = 1; -#endif - } - return pNew; -} - -/* -** Allocate a new expression node from a zero-terminated token that has -** already been dequoted. -*/ -Expr *sqlite3Expr( - sqlite3 *db, /* Handle for sqlite3DbMallocZero() (may be null) */ - int op, /* Expression opcode */ - const char *zToken /* Token argument. Might be NULL */ -){ - Token x; - x.z = zToken; - x.n = zToken ? sqlite3Strlen30(zToken) : 0; - return sqlite3ExprAlloc(db, op, &x, 0); -} - -/* -** Attach subtrees pLeft and pRight to the Expr node pRoot. -** -** If pRoot==NULL that means that a memory allocation error has occurred. -** In that case, delete the subtrees pLeft and pRight. -*/ -void sqlite3ExprAttachSubtrees( - sqlite3 *db, - Expr *pRoot, - Expr *pLeft, - Expr *pRight -){ - if( pRoot==0 ){ - assert( db->mallocFailed ); - sqlite3ExprDelete(db, pLeft); - sqlite3ExprDelete(db, pRight); - }else{ - if( pRight ){ - pRoot->pRight = pRight; - if( pRight->flags & EP_ExpCollate ){ - pRoot->flags |= EP_ExpCollate; - pRoot->pColl = pRight->pColl; - } - } - if( pLeft ){ - pRoot->pLeft = pLeft; - if( pLeft->flags & EP_ExpCollate ){ - pRoot->flags |= EP_ExpCollate; - pRoot->pColl = pLeft->pColl; - } - } - exprSetHeight(pRoot); - } -} - -/* -** Allocate a Expr node which joins as many as two subtrees. -** -** One or both of the subtrees can be NULL. Return a pointer to the new -** Expr node. Or, if an OOM error occurs, set pParse->db->mallocFailed, -** free the subtrees and return NULL. -*/ -Expr *sqlite3PExpr( - Parse *pParse, /* Parsing context */ - int op, /* Expression opcode */ - Expr *pLeft, /* Left operand */ - Expr *pRight, /* Right operand */ - const Token *pToken /* Argument token */ -){ - Expr *p = sqlite3ExprAlloc(pParse->db, op, pToken, 1); - sqlite3ExprAttachSubtrees(pParse->db, p, pLeft, pRight); - if( p ) { - sqlite3ExprCheckHeight(pParse, p->nHeight); - } - return p; -} - -/* -** Join two expressions using an AND operator. If either expression is -** NULL, then just return the other expression. -*/ -Expr *sqlite3ExprAnd(sqlite3 *db, Expr *pLeft, Expr *pRight){ - if( pLeft==0 ){ - return pRight; - }else if( pRight==0 ){ - return pLeft; - }else{ - Expr *pNew = sqlite3ExprAlloc(db, TK_AND, 0, 0); - sqlite3ExprAttachSubtrees(db, pNew, pLeft, pRight); - return pNew; - } -} - -/* -** Construct a new expression node for a function with multiple -** arguments. -*/ -Expr *sqlite3ExprFunction(Parse *pParse, ExprList *pList, Token *pToken){ - Expr *pNew; - sqlite3 *db = pParse->db; - assert( pToken ); - pNew = sqlite3ExprAlloc(db, TK_FUNCTION, pToken, 1); - if( pNew==0 ){ - sqlite3ExprListDelete(db, pList); /* Avoid memory leak when malloc fails */ - return 0; - } - pNew->x.pList = pList; - assert( !ExprHasProperty(pNew, EP_xIsSelect) ); - sqlite3ExprSetHeight(pParse, pNew); - return pNew; -} - -/* -** Assign a variable number to an expression that encodes a wildcard -** in the original SQL statement. -** -** Wildcards consisting of a single "?" are assigned the next sequential -** variable number. -** -** Wildcards of the form "?nnn" are assigned the number "nnn". We make -** sure "nnn" is not too be to avoid a denial of service attack when -** the SQL statement comes from an external source. -** -** Wildcards of the form ":aaa", "@aaa", or "$aaa" are assigned the same number -** as the previous instance of the same wildcard. Or if this is the first -** instance of the wildcard, the next sequenial variable number is -** assigned. -*/ -void sqlite3ExprAssignVarNumber(Parse *pParse, Expr *pExpr){ - sqlite3 *db = pParse->db; - const char *z; - - if( pExpr==0 ) return; - assert( !ExprHasAnyProperty(pExpr, EP_IntValue|EP_Reduced|EP_TokenOnly) ); - z = pExpr->u.zToken; - assert( z!=0 ); - assert( z[0]!=0 ); - if( z[1]==0 ){ - /* Wildcard of the form "?". Assign the next variable number */ - assert( z[0]=='?' ); - pExpr->iColumn = (ynVar)(++pParse->nVar); - }else{ - ynVar x = 0; - u32 n = sqlite3Strlen30(z); - if( z[0]=='?' ){ - /* Wildcard of the form "?nnn". Convert "nnn" to an integer and - ** use it as the variable number */ - i64 i; - int bOk = 0==sqlite3Atoi64(&z[1], &i, n-1, SQLITE_UTF8); - pExpr->iColumn = x = (ynVar)i; - testcase( i==0 ); - testcase( i==1 ); - testcase( i==db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER]-1 ); - testcase( i==db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER] ); - if( bOk==0 || i<1 || i>db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER] ){ - sqlite3ErrorMsg(pParse, "variable number must be between ?1 and ?%d", - db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER]); - x = 0; - } - if( i>pParse->nVar ){ - pParse->nVar = (int)i; - } - }else{ - /* Wildcards like ":aaa", "$aaa" or "@aaa". Reuse the same variable - ** number as the prior appearance of the same name, or if the name - ** has never appeared before, reuse the same variable number - */ - ynVar i; - for(i=0; inzVar; i++){ - if( pParse->azVar[i] && memcmp(pParse->azVar[i],z,n+1)==0 ){ - pExpr->iColumn = x = (ynVar)i+1; - break; - } - } - if( x==0 ) x = pExpr->iColumn = (ynVar)(++pParse->nVar); - } - if( x>0 ){ - if( x>pParse->nzVar ){ - char **a; - a = sqlite3DbRealloc(db, pParse->azVar, x*sizeof(a[0])); - if( a==0 ) return; /* Error reported through db->mallocFailed */ - pParse->azVar = a; - memset(&a[pParse->nzVar], 0, (x-pParse->nzVar)*sizeof(a[0])); - pParse->nzVar = x; - } - if( z[0]!='?' || pParse->azVar[x-1]==0 ){ - sqlite3DbFree(db, pParse->azVar[x-1]); - pParse->azVar[x-1] = sqlite3DbStrNDup(db, z, n); - } - } - } - if( !pParse->nErr && pParse->nVar>db->aLimit[SQLITE_LIMIT_VARIABLE_NUMBER] ){ - sqlite3ErrorMsg(pParse, "too many SQL variables"); - } -} - -/* -** Recursively delete an expression tree. -*/ -void sqlite3ExprDelete(sqlite3 *db, Expr *p){ - if( p==0 ) return; - /* Sanity check: Assert that the IntValue is non-negative if it exists */ - assert( !ExprHasProperty(p, EP_IntValue) || p->u.iValue>=0 ); - if( !ExprHasAnyProperty(p, EP_TokenOnly) ){ - sqlite3ExprDelete(db, p->pLeft); - sqlite3ExprDelete(db, p->pRight); - if( !ExprHasProperty(p, EP_Reduced) && (p->flags2 & EP2_MallocedToken)!=0 ){ - sqlite3DbFree(db, p->u.zToken); - } - if( ExprHasProperty(p, EP_xIsSelect) ){ - sqlite3SelectDelete(db, p->x.pSelect); - }else{ - sqlite3ExprListDelete(db, p->x.pList); - } - } - if( !ExprHasProperty(p, EP_Static) ){ - sqlite3DbFree(db, p); - } -} - -/* -** Return the number of bytes allocated for the expression structure -** passed as the first argument. This is always one of EXPR_FULLSIZE, -** EXPR_REDUCEDSIZE or EXPR_TOKENONLYSIZE. -*/ -static int exprStructSize(Expr *p){ - if( ExprHasProperty(p, EP_TokenOnly) ) return EXPR_TOKENONLYSIZE; - if( ExprHasProperty(p, EP_Reduced) ) return EXPR_REDUCEDSIZE; - return EXPR_FULLSIZE; -} - -/* -** The dupedExpr*Size() routines each return the number of bytes required -** to store a copy of an expression or expression tree. They differ in -** how much of the tree is measured. -** -** dupedExprStructSize() Size of only the Expr structure -** dupedExprNodeSize() Size of Expr + space for token -** dupedExprSize() Expr + token + subtree components -** -*************************************************************************** -** -** The dupedExprStructSize() function returns two values OR-ed together: -** (1) the space required for a copy of the Expr structure only and -** (2) the EP_xxx flags that indicate what the structure size should be. -** The return values is always one of: -** -** EXPR_FULLSIZE -** EXPR_REDUCEDSIZE | EP_Reduced -** EXPR_TOKENONLYSIZE | EP_TokenOnly -** -** The size of the structure can be found by masking the return value -** of this routine with 0xfff. The flags can be found by masking the -** return value with EP_Reduced|EP_TokenOnly. -** -** Note that with flags==EXPRDUP_REDUCE, this routines works on full-size -** (unreduced) Expr objects as they or originally constructed by the parser. -** During expression analysis, extra information is computed and moved into -** later parts of teh Expr object and that extra information might get chopped -** off if the expression is reduced. Note also that it does not work to -** make a EXPRDUP_REDUCE copy of a reduced expression. It is only legal -** to reduce a pristine expression tree from the parser. The implementation -** of dupedExprStructSize() contain multiple assert() statements that attempt -** to enforce this constraint. -*/ -static int dupedExprStructSize(Expr *p, int flags){ - int nSize; - assert( flags==EXPRDUP_REDUCE || flags==0 ); /* Only one flag value allowed */ - if( 0==(flags&EXPRDUP_REDUCE) ){ - nSize = EXPR_FULLSIZE; - }else{ - assert( !ExprHasAnyProperty(p, EP_TokenOnly|EP_Reduced) ); - assert( !ExprHasProperty(p, EP_FromJoin) ); - assert( (p->flags2 & EP2_MallocedToken)==0 ); - assert( (p->flags2 & EP2_Irreducible)==0 ); - if( p->pLeft || p->pRight || p->pColl || p->x.pList ){ - nSize = EXPR_REDUCEDSIZE | EP_Reduced; - }else{ - nSize = EXPR_TOKENONLYSIZE | EP_TokenOnly; - } - } - return nSize; -} - -/* -** This function returns the space in bytes required to store the copy -** of the Expr structure and a copy of the Expr.u.zToken string (if that -** string is defined.) -*/ -static int dupedExprNodeSize(Expr *p, int flags){ - int nByte = dupedExprStructSize(p, flags) & 0xfff; - if( !ExprHasProperty(p, EP_IntValue) && p->u.zToken ){ - nByte += sqlite3Strlen30(p->u.zToken)+1; - } - return ROUND8(nByte); -} - -/* -** Return the number of bytes required to create a duplicate of the -** expression passed as the first argument. The second argument is a -** mask containing EXPRDUP_XXX flags. -** -** The value returned includes space to create a copy of the Expr struct -** itself and the buffer referred to by Expr.u.zToken, if any. -** -** If the EXPRDUP_REDUCE flag is set, then the return value includes -** space to duplicate all Expr nodes in the tree formed by Expr.pLeft -** and Expr.pRight variables (but not for any structures pointed to or -** descended from the Expr.x.pList or Expr.x.pSelect variables). -*/ -static int dupedExprSize(Expr *p, int flags){ - int nByte = 0; - if( p ){ - nByte = dupedExprNodeSize(p, flags); - if( flags&EXPRDUP_REDUCE ){ - nByte += dupedExprSize(p->pLeft, flags) + dupedExprSize(p->pRight, flags); - } - } - return nByte; -} - -/* -** This function is similar to sqlite3ExprDup(), except that if pzBuffer -** is not NULL then *pzBuffer is assumed to point to a buffer large enough -** to store the copy of expression p, the copies of p->u.zToken -** (if applicable), and the copies of the p->pLeft and p->pRight expressions, -** if any. Before returning, *pzBuffer is set to the first byte passed the -** portion of the buffer copied into by this function. -*/ -static Expr *exprDup(sqlite3 *db, Expr *p, int flags, u8 **pzBuffer){ - Expr *pNew = 0; /* Value to return */ - if( p ){ - const int isReduced = (flags&EXPRDUP_REDUCE); - u8 *zAlloc; - u32 staticFlag = 0; - - assert( pzBuffer==0 || isReduced ); - - /* Figure out where to write the new Expr structure. */ - if( pzBuffer ){ - zAlloc = *pzBuffer; - staticFlag = EP_Static; - }else{ - zAlloc = sqlite3DbMallocRaw(db, dupedExprSize(p, flags)); - } - pNew = (Expr *)zAlloc; - - if( pNew ){ - /* Set nNewSize to the size allocated for the structure pointed to - ** by pNew. This is either EXPR_FULLSIZE, EXPR_REDUCEDSIZE or - ** EXPR_TOKENONLYSIZE. nToken is set to the number of bytes consumed - ** by the copy of the p->u.zToken string (if any). - */ - const unsigned nStructSize = dupedExprStructSize(p, flags); - const int nNewSize = nStructSize & 0xfff; - int nToken; - if( !ExprHasProperty(p, EP_IntValue) && p->u.zToken ){ - nToken = sqlite3Strlen30(p->u.zToken) + 1; - }else{ - nToken = 0; - } - if( isReduced ){ - assert( ExprHasProperty(p, EP_Reduced)==0 ); - memcpy(zAlloc, p, nNewSize); - }else{ - int nSize = exprStructSize(p); - memcpy(zAlloc, p, nSize); - memset(&zAlloc[nSize], 0, EXPR_FULLSIZE-nSize); - } - - /* Set the EP_Reduced, EP_TokenOnly, and EP_Static flags appropriately. */ - pNew->flags &= ~(EP_Reduced|EP_TokenOnly|EP_Static); - pNew->flags |= nStructSize & (EP_Reduced|EP_TokenOnly); - pNew->flags |= staticFlag; - - /* Copy the p->u.zToken string, if any. */ - if( nToken ){ - char *zToken = pNew->u.zToken = (char*)&zAlloc[nNewSize]; - memcpy(zToken, p->u.zToken, nToken); - } - - if( 0==((p->flags|pNew->flags) & EP_TokenOnly) ){ - /* Fill in the pNew->x.pSelect or pNew->x.pList member. */ - if( ExprHasProperty(p, EP_xIsSelect) ){ - pNew->x.pSelect = sqlite3SelectDup(db, p->x.pSelect, isReduced); - }else{ - pNew->x.pList = sqlite3ExprListDup(db, p->x.pList, isReduced); - } - } - - /* Fill in pNew->pLeft and pNew->pRight. */ - if( ExprHasAnyProperty(pNew, EP_Reduced|EP_TokenOnly) ){ - zAlloc += dupedExprNodeSize(p, flags); - if( ExprHasProperty(pNew, EP_Reduced) ){ - pNew->pLeft = exprDup(db, p->pLeft, EXPRDUP_REDUCE, &zAlloc); - pNew->pRight = exprDup(db, p->pRight, EXPRDUP_REDUCE, &zAlloc); - } - if( pzBuffer ){ - *pzBuffer = zAlloc; - } - }else{ - pNew->flags2 = 0; - if( !ExprHasAnyProperty(p, EP_TokenOnly) ){ - pNew->pLeft = sqlite3ExprDup(db, p->pLeft, 0); - pNew->pRight = sqlite3ExprDup(db, p->pRight, 0); - } - } - - } - } - return pNew; -} - -/* -** The following group of routines make deep copies of expressions, -** expression lists, ID lists, and select statements. The copies can -** be deleted (by being passed to their respective ...Delete() routines) -** without effecting the originals. -** -** The expression list, ID, and source lists return by sqlite3ExprListDup(), -** sqlite3IdListDup(), and sqlite3SrcListDup() can not be further expanded -** by subsequent calls to sqlite*ListAppend() routines. -** -** Any tables that the SrcList might point to are not duplicated. -** -** The flags parameter contains a combination of the EXPRDUP_XXX flags. -** If the EXPRDUP_REDUCE flag is set, then the structure returned is a -** truncated version of the usual Expr structure that will be stored as -** part of the in-memory representation of the database schema. -*/ -Expr *sqlite3ExprDup(sqlite3 *db, Expr *p, int flags){ - return exprDup(db, p, flags, 0); -} -ExprList *sqlite3ExprListDup(sqlite3 *db, ExprList *p, int flags){ - ExprList *pNew; - struct ExprList_item *pItem, *pOldItem; - int i; - if( p==0 ) return 0; - pNew = sqlite3DbMallocRaw(db, sizeof(*pNew) ); - if( pNew==0 ) return 0; - pNew->iECursor = 0; - pNew->nExpr = pNew->nAlloc = p->nExpr; - pNew->a = pItem = sqlite3DbMallocRaw(db, p->nExpr*sizeof(p->a[0]) ); - if( pItem==0 ){ - sqlite3DbFree(db, pNew); - return 0; - } - pOldItem = p->a; - for(i=0; inExpr; i++, pItem++, pOldItem++){ - Expr *pOldExpr = pOldItem->pExpr; - pItem->pExpr = sqlite3ExprDup(db, pOldExpr, flags); - pItem->zName = sqlite3DbStrDup(db, pOldItem->zName); - pItem->zSpan = sqlite3DbStrDup(db, pOldItem->zSpan); - pItem->sortOrder = pOldItem->sortOrder; - pItem->done = 0; - pItem->iCol = pOldItem->iCol; - pItem->iAlias = pOldItem->iAlias; - } - return pNew; -} - -/* -** If cursors, triggers, views and subqueries are all omitted from -** the build, then none of the following routines, except for -** sqlite3SelectDup(), can be called. sqlite3SelectDup() is sometimes -** called with a NULL argument. -*/ -#if !defined(SQLITE_OMIT_VIEW) || !defined(SQLITE_OMIT_TRIGGER) \ - || !defined(SQLITE_OMIT_SUBQUERY) -SrcList *sqlite3SrcListDup(sqlite3 *db, SrcList *p, int flags){ - SrcList *pNew; - int i; - int nByte; - if( p==0 ) return 0; - nByte = sizeof(*p) + (p->nSrc>0 ? sizeof(p->a[0]) * (p->nSrc-1) : 0); - pNew = sqlite3DbMallocRaw(db, nByte ); - if( pNew==0 ) return 0; - pNew->nSrc = pNew->nAlloc = p->nSrc; - for(i=0; inSrc; i++){ - struct SrcList_item *pNewItem = &pNew->a[i]; - struct SrcList_item *pOldItem = &p->a[i]; - Table *pTab; - pNewItem->zDatabase = sqlite3DbStrDup(db, pOldItem->zDatabase); - pNewItem->zName = sqlite3DbStrDup(db, pOldItem->zName); - pNewItem->zAlias = sqlite3DbStrDup(db, pOldItem->zAlias); - pNewItem->jointype = pOldItem->jointype; - pNewItem->iCursor = pOldItem->iCursor; - pNewItem->addrFillSub = pOldItem->addrFillSub; - pNewItem->regReturn = pOldItem->regReturn; - pNewItem->isCorrelated = pOldItem->isCorrelated; - pNewItem->zIndex = sqlite3DbStrDup(db, pOldItem->zIndex); - pNewItem->notIndexed = pOldItem->notIndexed; - pNewItem->pIndex = pOldItem->pIndex; - pTab = pNewItem->pTab = pOldItem->pTab; - if( pTab ){ - pTab->nRef++; - } - pNewItem->pSelect = sqlite3SelectDup(db, pOldItem->pSelect, flags); - pNewItem->pOn = sqlite3ExprDup(db, pOldItem->pOn, flags); - pNewItem->pUsing = sqlite3IdListDup(db, pOldItem->pUsing); - pNewItem->colUsed = pOldItem->colUsed; - } - return pNew; -} -IdList *sqlite3IdListDup(sqlite3 *db, IdList *p){ - IdList *pNew; - int i; - if( p==0 ) return 0; - pNew = sqlite3DbMallocRaw(db, sizeof(*pNew) ); - if( pNew==0 ) return 0; - pNew->nId = pNew->nAlloc = p->nId; - pNew->a = sqlite3DbMallocRaw(db, p->nId*sizeof(p->a[0]) ); - if( pNew->a==0 ){ - sqlite3DbFree(db, pNew); - return 0; - } - for(i=0; inId; i++){ - struct IdList_item *pNewItem = &pNew->a[i]; - struct IdList_item *pOldItem = &p->a[i]; - pNewItem->zName = sqlite3DbStrDup(db, pOldItem->zName); - pNewItem->idx = pOldItem->idx; - } - return pNew; -} -Select *sqlite3SelectDup(sqlite3 *db, Select *p, int flags){ - Select *pNew; - if( p==0 ) return 0; - pNew = sqlite3DbMallocRaw(db, sizeof(*p) ); - if( pNew==0 ) return 0; - pNew->pEList = sqlite3ExprListDup(db, p->pEList, flags); - pNew->pSrc = sqlite3SrcListDup(db, p->pSrc, flags); - pNew->pWhere = sqlite3ExprDup(db, p->pWhere, flags); - pNew->pGroupBy = sqlite3ExprListDup(db, p->pGroupBy, flags); - pNew->pHaving = sqlite3ExprDup(db, p->pHaving, flags); - pNew->pOrderBy = sqlite3ExprListDup(db, p->pOrderBy, flags); - pNew->op = p->op; - pNew->pPrior = sqlite3SelectDup(db, p->pPrior, flags); - pNew->pLimit = sqlite3ExprDup(db, p->pLimit, flags); - pNew->pOffset = sqlite3ExprDup(db, p->pOffset, flags); - pNew->iLimit = 0; - pNew->iOffset = 0; - pNew->selFlags = p->selFlags & ~SF_UsesEphemeral; - pNew->pRightmost = 0; - pNew->addrOpenEphm[0] = -1; - pNew->addrOpenEphm[1] = -1; - pNew->addrOpenEphm[2] = -1; - return pNew; -} -#else -Select *sqlite3SelectDup(sqlite3 *db, Select *p, int flags){ - assert( p==0 ); - return 0; -} -#endif - - -/* -** Add a new element to the end of an expression list. If pList is -** initially NULL, then create a new expression list. -** -** If a memory allocation error occurs, the entire list is freed and -** NULL is returned. If non-NULL is returned, then it is guaranteed -** that the new entry was successfully appended. -*/ -ExprList *sqlite3ExprListAppend( - Parse *pParse, /* Parsing context */ - ExprList *pList, /* List to which to append. Might be NULL */ - Expr *pExpr /* Expression to be appended. Might be NULL */ -){ - sqlite3 *db = pParse->db; - if( pList==0 ){ - pList = sqlite3DbMallocZero(db, sizeof(ExprList) ); - if( pList==0 ){ - goto no_mem; - } - assert( pList->nAlloc==0 ); - } - if( pList->nAlloc<=pList->nExpr ){ - struct ExprList_item *a; - int n = pList->nAlloc*2 + 4; - a = sqlite3DbRealloc(db, pList->a, n*sizeof(pList->a[0])); - if( a==0 ){ - goto no_mem; - } - pList->a = a; - pList->nAlloc = sqlite3DbMallocSize(db, a)/sizeof(a[0]); - } - assert( pList->a!=0 ); - if( 1 ){ - struct ExprList_item *pItem = &pList->a[pList->nExpr++]; - memset(pItem, 0, sizeof(*pItem)); - pItem->pExpr = pExpr; - } - return pList; - -no_mem: - /* Avoid leaking memory if malloc has failed. */ - sqlite3ExprDelete(db, pExpr); - sqlite3ExprListDelete(db, pList); - return 0; -} - -/* -** Set the ExprList.a[].zName element of the most recently added item -** on the expression list. -** -** pList might be NULL following an OOM error. But pName should never be -** NULL. If a memory allocation fails, the pParse->db->mallocFailed flag -** is set. -*/ -void sqlite3ExprListSetName( - Parse *pParse, /* Parsing context */ - ExprList *pList, /* List to which to add the span. */ - Token *pName, /* Name to be added */ - int dequote /* True to cause the name to be dequoted */ -){ - assert( pList!=0 || pParse->db->mallocFailed!=0 ); - if( pList ){ - struct ExprList_item *pItem; - assert( pList->nExpr>0 ); - pItem = &pList->a[pList->nExpr-1]; - assert( pItem->zName==0 ); - pItem->zName = sqlite3DbStrNDup(pParse->db, pName->z, pName->n); - if( dequote && pItem->zName ) sqlite3Dequote(pItem->zName); - } -} - -/* -** Set the ExprList.a[].zSpan element of the most recently added item -** on the expression list. -** -** pList might be NULL following an OOM error. But pSpan should never be -** NULL. If a memory allocation fails, the pParse->db->mallocFailed flag -** is set. -*/ -void sqlite3ExprListSetSpan( - Parse *pParse, /* Parsing context */ - ExprList *pList, /* List to which to add the span. */ - ExprSpan *pSpan /* The span to be added */ -){ - sqlite3 *db = pParse->db; - assert( pList!=0 || db->mallocFailed!=0 ); - if( pList ){ - struct ExprList_item *pItem = &pList->a[pList->nExpr-1]; - assert( pList->nExpr>0 ); - assert( db->mallocFailed || pItem->pExpr==pSpan->pExpr ); - sqlite3DbFree(db, pItem->zSpan); - pItem->zSpan = sqlite3DbStrNDup(db, (char*)pSpan->zStart, - (int)(pSpan->zEnd - pSpan->zStart)); - } -} - -/* -** If the expression list pEList contains more than iLimit elements, -** leave an error message in pParse. -*/ -void sqlite3ExprListCheckLength( - Parse *pParse, - ExprList *pEList, - const char *zObject -){ - int mx = pParse->db->aLimit[SQLITE_LIMIT_COLUMN]; - testcase( pEList && pEList->nExpr==mx ); - testcase( pEList && pEList->nExpr==mx+1 ); - if( pEList && pEList->nExpr>mx ){ - sqlite3ErrorMsg(pParse, "too many columns in %s", zObject); - } -} - -/* -** Delete an entire expression list. -*/ -void sqlite3ExprListDelete(sqlite3 *db, ExprList *pList){ - int i; - struct ExprList_item *pItem; - if( pList==0 ) return; - assert( pList->a!=0 || (pList->nExpr==0 && pList->nAlloc==0) ); - assert( pList->nExpr<=pList->nAlloc ); - for(pItem=pList->a, i=0; inExpr; i++, pItem++){ - sqlite3ExprDelete(db, pItem->pExpr); - sqlite3DbFree(db, pItem->zName); - sqlite3DbFree(db, pItem->zSpan); - } - sqlite3DbFree(db, pList->a); - sqlite3DbFree(db, pList); -} - -/* -** These routines are Walker callbacks. Walker.u.pi is a pointer -** to an integer. These routines are checking an expression to see -** if it is a constant. Set *Walker.u.pi to 0 if the expression is -** not constant. -** -** These callback routines are used to implement the following: -** -** sqlite3ExprIsConstant() -** sqlite3ExprIsConstantNotJoin() -** sqlite3ExprIsConstantOrFunction() -** -*/ -static int exprNodeIsConstant(Walker *pWalker, Expr *pExpr){ - - /* If pWalker->u.i is 3 then any term of the expression that comes from - ** the ON or USING clauses of a join disqualifies the expression - ** from being considered constant. */ - if( pWalker->u.i==3 && ExprHasAnyProperty(pExpr, EP_FromJoin) ){ - pWalker->u.i = 0; - return WRC_Abort; - } - - switch( pExpr->op ){ - /* Consider functions to be constant if all their arguments are constant - ** and pWalker->u.i==2 */ - case TK_FUNCTION: - if( pWalker->u.i==2 ) return 0; - /* Fall through */ - case TK_ID: - case TK_COLUMN: - case TK_AGG_FUNCTION: - case TK_AGG_COLUMN: - testcase( pExpr->op==TK_ID ); - testcase( pExpr->op==TK_COLUMN ); - testcase( pExpr->op==TK_AGG_FUNCTION ); - testcase( pExpr->op==TK_AGG_COLUMN ); - pWalker->u.i = 0; - return WRC_Abort; - default: - testcase( pExpr->op==TK_SELECT ); /* selectNodeIsConstant will disallow */ - testcase( pExpr->op==TK_EXISTS ); /* selectNodeIsConstant will disallow */ - return WRC_Continue; - } -} -static int selectNodeIsConstant(Walker *pWalker, Select *NotUsed){ - UNUSED_PARAMETER(NotUsed); - pWalker->u.i = 0; - return WRC_Abort; -} -static int exprIsConst(Expr *p, int initFlag){ - Walker w; - w.u.i = initFlag; - w.xExprCallback = exprNodeIsConstant; - w.xSelectCallback = selectNodeIsConstant; - sqlite3WalkExpr(&w, p); - return w.u.i; -} - -/* -** Walk an expression tree. Return 1 if the expression is constant -** and 0 if it involves variables or function calls. -** -** For the purposes of this function, a double-quoted string (ex: "abc") -** is considered a variable but a single-quoted string (ex: 'abc') is -** a constant. -*/ -int sqlite3ExprIsConstant(Expr *p){ - return exprIsConst(p, 1); -} - -/* -** Walk an expression tree. Return 1 if the expression is constant -** that does no originate from the ON or USING clauses of a join. -** Return 0 if it involves variables or function calls or terms from -** an ON or USING clause. -*/ -int sqlite3ExprIsConstantNotJoin(Expr *p){ - return exprIsConst(p, 3); -} - -/* -** Walk an expression tree. Return 1 if the expression is constant -** or a function call with constant arguments. Return and 0 if there -** are any variables. -** -** For the purposes of this function, a double-quoted string (ex: "abc") -** is considered a variable but a single-quoted string (ex: 'abc') is -** a constant. -*/ -int sqlite3ExprIsConstantOrFunction(Expr *p){ - return exprIsConst(p, 2); -} - -/* -** If the expression p codes a constant integer that is small enough -** to fit in a 32-bit integer, return 1 and put the value of the integer -** in *pValue. If the expression is not an integer or if it is too big -** to fit in a signed 32-bit integer, return 0 and leave *pValue unchanged. -*/ -int sqlite3ExprIsInteger(Expr *p, int *pValue){ - int rc = 0; - - /* If an expression is an integer literal that fits in a signed 32-bit - ** integer, then the EP_IntValue flag will have already been set */ - assert( p->op!=TK_INTEGER || (p->flags & EP_IntValue)!=0 - || sqlite3GetInt32(p->u.zToken, &rc)==0 ); - - if( p->flags & EP_IntValue ){ - *pValue = p->u.iValue; - return 1; - } - switch( p->op ){ - case TK_UPLUS: { - rc = sqlite3ExprIsInteger(p->pLeft, pValue); - break; - } - case TK_UMINUS: { - int v; - if( sqlite3ExprIsInteger(p->pLeft, &v) ){ - *pValue = -v; - rc = 1; - } - break; - } - default: break; - } - return rc; -} - -/* -** Return FALSE if there is no chance that the expression can be NULL. -** -** If the expression might be NULL or if the expression is too complex -** to tell return TRUE. -** -** This routine is used as an optimization, to skip OP_IsNull opcodes -** when we know that a value cannot be NULL. Hence, a false positive -** (returning TRUE when in fact the expression can never be NULL) might -** be a small performance hit but is otherwise harmless. On the other -** hand, a false negative (returning FALSE when the result could be NULL) -** will likely result in an incorrect answer. So when in doubt, return -** TRUE. -*/ -int sqlite3ExprCanBeNull(const Expr *p){ - u8 op; - while( p->op==TK_UPLUS || p->op==TK_UMINUS ){ p = p->pLeft; } - op = p->op; - if( op==TK_REGISTER ) op = p->op2; - switch( op ){ - case TK_INTEGER: - case TK_STRING: - case TK_FLOAT: - case TK_BLOB: - return 0; - default: - return 1; - } -} - -/* -** Generate an OP_IsNull instruction that tests register iReg and jumps -** to location iDest if the value in iReg is NULL. The value in iReg -** was computed by pExpr. If we can look at pExpr at compile-time and -** determine that it can never generate a NULL, then the OP_IsNull operation -** can be omitted. -*/ -void sqlite3ExprCodeIsNullJump( - Vdbe *v, /* The VDBE under construction */ - const Expr *pExpr, /* Only generate OP_IsNull if this expr can be NULL */ - int iReg, /* Test the value in this register for NULL */ - int iDest /* Jump here if the value is null */ -){ - if( sqlite3ExprCanBeNull(pExpr) ){ - sqlite3VdbeAddOp2(v, OP_IsNull, iReg, iDest); - } -} - -/* -** Return TRUE if the given expression is a constant which would be -** unchanged by OP_Affinity with the affinity given in the second -** argument. -** -** This routine is used to determine if the OP_Affinity operation -** can be omitted. When in doubt return FALSE. A false negative -** is harmless. A false positive, however, can result in the wrong -** answer. -*/ -int sqlite3ExprNeedsNoAffinityChange(const Expr *p, char aff){ - u8 op; - if( aff==SQLITE_AFF_NONE ) return 1; - while( p->op==TK_UPLUS || p->op==TK_UMINUS ){ p = p->pLeft; } - op = p->op; - if( op==TK_REGISTER ) op = p->op2; - switch( op ){ - case TK_INTEGER: { - return aff==SQLITE_AFF_INTEGER || aff==SQLITE_AFF_NUMERIC; - } - case TK_FLOAT: { - return aff==SQLITE_AFF_REAL || aff==SQLITE_AFF_NUMERIC; - } - case TK_STRING: { - return aff==SQLITE_AFF_TEXT; - } - case TK_BLOB: { - return 1; - } - case TK_COLUMN: { - assert( p->iTable>=0 ); /* p cannot be part of a CHECK constraint */ - return p->iColumn<0 - && (aff==SQLITE_AFF_INTEGER || aff==SQLITE_AFF_NUMERIC); - } - default: { - return 0; - } - } -} - -/* -** Return TRUE if the given string is a row-id column name. -*/ -int sqlite3IsRowid(const char *z){ - if( sqlite3StrICmp(z, "_ROWID_")==0 ) return 1; - if( sqlite3StrICmp(z, "ROWID")==0 ) return 1; - if( sqlite3StrICmp(z, "OID")==0 ) return 1; - return 0; -} - -/* -** Return true if we are able to the IN operator optimization on a -** query of the form -** -** x IN (SELECT ...) -** -** Where the SELECT... clause is as specified by the parameter to this -** routine. -** -** The Select object passed in has already been preprocessed and no -** errors have been found. -*/ -#ifndef SQLITE_OMIT_SUBQUERY -static int isCandidateForInOpt(Select *p){ - SrcList *pSrc; - ExprList *pEList; - Table *pTab; - if( p==0 ) return 0; /* right-hand side of IN is SELECT */ - if( p->pPrior ) return 0; /* Not a compound SELECT */ - if( p->selFlags & (SF_Distinct|SF_Aggregate) ){ - testcase( (p->selFlags & (SF_Distinct|SF_Aggregate))==SF_Distinct ); - testcase( (p->selFlags & (SF_Distinct|SF_Aggregate))==SF_Aggregate ); - return 0; /* No DISTINCT keyword and no aggregate functions */ - } - assert( p->pGroupBy==0 ); /* Has no GROUP BY clause */ - if( p->pLimit ) return 0; /* Has no LIMIT clause */ - assert( p->pOffset==0 ); /* No LIMIT means no OFFSET */ - if( p->pWhere ) return 0; /* Has no WHERE clause */ - pSrc = p->pSrc; - assert( pSrc!=0 ); - if( pSrc->nSrc!=1 ) return 0; /* Single term in FROM clause */ - if( pSrc->a[0].pSelect ) return 0; /* FROM is not a subquery or view */ - pTab = pSrc->a[0].pTab; - if( NEVER(pTab==0) ) return 0; - assert( pTab->pSelect==0 ); /* FROM clause is not a view */ - if( IsVirtual(pTab) ) return 0; /* FROM clause not a virtual table */ - pEList = p->pEList; - if( pEList->nExpr!=1 ) return 0; /* One column in the result set */ - if( pEList->a[0].pExpr->op!=TK_COLUMN ) return 0; /* Result is a column */ - return 1; -} -#endif /* SQLITE_OMIT_SUBQUERY */ - -/* -** This function is used by the implementation of the IN (...) operator. -** It's job is to find or create a b-tree structure that may be used -** either to test for membership of the (...) set or to iterate through -** its members, skipping duplicates. -** -** The index of the cursor opened on the b-tree (database table, database index -** or ephermal table) is stored in pX->iTable before this function returns. -** The returned value of this function indicates the b-tree type, as follows: -** -** IN_INDEX_ROWID - The cursor was opened on a database table. -** IN_INDEX_INDEX - The cursor was opened on a database index. -** IN_INDEX_EPH - The cursor was opened on a specially created and -** populated epheremal table. -** -** An existing b-tree may only be used if the SELECT is of the simple -** form: -** -** SELECT FROM
-** -** If the prNotFound parameter is 0, then the b-tree will be used to iterate -** through the set members, skipping any duplicates. In this case an -** epheremal table must be used unless the selected is guaranteed -** to be unique - either because it is an INTEGER PRIMARY KEY or it -** has a UNIQUE constraint or UNIQUE index. -** -** If the prNotFound parameter is not 0, then the b-tree will be used -** for fast set membership tests. In this case an epheremal table must -** be used unless is an INTEGER PRIMARY KEY or an index can -** be found with as its left-most column. -** -** When the b-tree is being used for membership tests, the calling function -** needs to know whether or not the structure contains an SQL NULL -** value in order to correctly evaluate expressions like "X IN (Y, Z)". -** If there is any chance that the (...) might contain a NULL value at -** runtime, then a register is allocated and the register number written -** to *prNotFound. If there is no chance that the (...) contains a -** NULL value, then *prNotFound is left unchanged. -** -** If a register is allocated and its location stored in *prNotFound, then -** its initial value is NULL. If the (...) does not remain constant -** for the duration of the query (i.e. the SELECT within the (...) -** is a correlated subquery) then the value of the allocated register is -** reset to NULL each time the subquery is rerun. This allows the -** caller to use vdbe code equivalent to the following: -** -** if( register==NULL ){ -** has_null = -** register = 1 -** } -** -** in order to avoid running the -** test more often than is necessary. -*/ -#ifndef SQLITE_OMIT_SUBQUERY -int sqlite3FindInIndex(Parse *pParse, Expr *pX, int *prNotFound){ - Select *p; /* SELECT to the right of IN operator */ - int eType = 0; /* Type of RHS table. IN_INDEX_* */ - int iTab = pParse->nTab++; /* Cursor of the RHS table */ - int mustBeUnique = (prNotFound==0); /* True if RHS must be unique */ - - assert( pX->op==TK_IN ); - - /* Check to see if an existing table or index can be used to - ** satisfy the query. This is preferable to generating a new - ** ephemeral table. - */ - p = (ExprHasProperty(pX, EP_xIsSelect) ? pX->x.pSelect : 0); - if( ALWAYS(pParse->nErr==0) && isCandidateForInOpt(p) ){ - sqlite3 *db = pParse->db; /* Database connection */ - Vdbe *v = sqlite3GetVdbe(pParse); /* Virtual machine being coded */ - Table *pTab; /* Table
. */ - Expr *pExpr; /* Expression */ - int iCol; /* Index of column */ - int iDb; /* Database idx for pTab */ - - assert( p ); /* Because of isCandidateForInOpt(p) */ - assert( p->pEList!=0 ); /* Because of isCandidateForInOpt(p) */ - assert( p->pEList->a[0].pExpr!=0 ); /* Because of isCandidateForInOpt(p) */ - assert( p->pSrc!=0 ); /* Because of isCandidateForInOpt(p) */ - pTab = p->pSrc->a[0].pTab; - pExpr = p->pEList->a[0].pExpr; - iCol = pExpr->iColumn; - - /* Code an OP_VerifyCookie and OP_TableLock for
. */ - iDb = sqlite3SchemaToIndex(db, pTab->pSchema); - sqlite3CodeVerifySchema(pParse, iDb); - sqlite3TableLock(pParse, iDb, pTab->tnum, 0, pTab->zName); - - /* This function is only called from two places. In both cases the vdbe - ** has already been allocated. So assume sqlite3GetVdbe() is always - ** successful here. - */ - assert(v); - if( iCol<0 ){ - int iMem = ++pParse->nMem; - int iAddr; - - iAddr = sqlite3VdbeAddOp1(v, OP_Once, iMem); - - sqlite3OpenTable(pParse, iTab, iDb, pTab, OP_OpenRead); - eType = IN_INDEX_ROWID; - - sqlite3VdbeJumpHere(v, iAddr); - }else{ - Index *pIdx; /* Iterator variable */ - - /* The collation sequence used by the comparison. If an index is to - ** be used in place of a temp-table, it must be ordered according - ** to this collation sequence. */ - CollSeq *pReq = sqlite3BinaryCompareCollSeq(pParse, pX->pLeft, pExpr); - - /* Check that the affinity that will be used to perform the - ** comparison is the same as the affinity of the column. If - ** it is not, it is not possible to use any index. - */ - char aff = comparisonAffinity(pX); - int affinity_ok = (pTab->aCol[iCol].affinity==aff||aff==SQLITE_AFF_NONE); - - for(pIdx=pTab->pIndex; pIdx && eType==0 && affinity_ok; pIdx=pIdx->pNext){ - if( (pIdx->aiColumn[0]==iCol) - && sqlite3FindCollSeq(db, ENC(db), pIdx->azColl[0], 0)==pReq - && (!mustBeUnique || (pIdx->nColumn==1 && pIdx->onError!=OE_None)) - ){ - int iMem = ++pParse->nMem; - int iAddr; - char *pKey; - - pKey = (char *)sqlite3IndexKeyinfo(pParse, pIdx); - iAddr = sqlite3VdbeAddOp1(v, OP_Once, iMem); - - sqlite3VdbeAddOp4(v, OP_OpenRead, iTab, pIdx->tnum, iDb, - pKey,P4_KEYINFO_HANDOFF); - VdbeComment((v, "%s", pIdx->zName)); - eType = IN_INDEX_INDEX; - - sqlite3VdbeJumpHere(v, iAddr); - if( prNotFound && !pTab->aCol[iCol].notNull ){ - *prNotFound = ++pParse->nMem; - } - } - } - } - } - - if( eType==0 ){ - /* Could not found an existing table or index to use as the RHS b-tree. - ** We will have to generate an ephemeral table to do the job. - */ - double savedNQueryLoop = pParse->nQueryLoop; - int rMayHaveNull = 0; - eType = IN_INDEX_EPH; - if( prNotFound ){ - *prNotFound = rMayHaveNull = ++pParse->nMem; - }else{ - testcase( pParse->nQueryLoop>(double)1 ); - pParse->nQueryLoop = (double)1; - if( pX->pLeft->iColumn<0 && !ExprHasAnyProperty(pX, EP_xIsSelect) ){ - eType = IN_INDEX_ROWID; - } - } - sqlite3CodeSubselect(pParse, pX, rMayHaveNull, eType==IN_INDEX_ROWID); - pParse->nQueryLoop = savedNQueryLoop; - }else{ - pX->iTable = iTab; - } - return eType; -} -#endif - -/* -** Generate code for scalar subqueries used as a subquery expression, EXISTS, -** or IN operators. Examples: -** -** (SELECT a FROM b) -- subquery -** EXISTS (SELECT a FROM b) -- EXISTS subquery -** x IN (4,5,11) -- IN operator with list on right-hand side -** x IN (SELECT a FROM b) -- IN operator with subquery on the right -** -** The pExpr parameter describes the expression that contains the IN -** operator or subquery. -** -** If parameter isRowid is non-zero, then expression pExpr is guaranteed -** to be of the form " IN (?, ?, ?)", where is a reference -** to some integer key column of a table B-Tree. In this case, use an -** intkey B-Tree to store the set of IN(...) values instead of the usual -** (slower) variable length keys B-Tree. -** -** If rMayHaveNull is non-zero, that means that the operation is an IN -** (not a SELECT or EXISTS) and that the RHS might contains NULLs. -** Furthermore, the IN is in a WHERE clause and that we really want -** to iterate over the RHS of the IN operator in order to quickly locate -** all corresponding LHS elements. All this routine does is initialize -** the register given by rMayHaveNull to NULL. Calling routines will take -** care of changing this register value to non-NULL if the RHS is NULL-free. -** -** If rMayHaveNull is zero, that means that the subquery is being used -** for membership testing only. There is no need to initialize any -** registers to indicate the presense or absence of NULLs on the RHS. -** -** For a SELECT or EXISTS operator, return the register that holds the -** result. For IN operators or if an error occurs, the return value is 0. -*/ -#ifndef SQLITE_OMIT_SUBQUERY -int sqlite3CodeSubselect( - Parse *pParse, /* Parsing context */ - Expr *pExpr, /* The IN, SELECT, or EXISTS operator */ - int rMayHaveNull, /* Register that records whether NULLs exist in RHS */ - int isRowid /* If true, LHS of IN operator is a rowid */ -){ - int testAddr = -1; /* One-time test address */ - int rReg = 0; /* Register storing resulting */ - Vdbe *v = sqlite3GetVdbe(pParse); - if( NEVER(v==0) ) return 0; - sqlite3ExprCachePush(pParse); - - /* This code must be run in its entirety every time it is encountered - ** if any of the following is true: - ** - ** * The right-hand side is a correlated subquery - ** * The right-hand side is an expression list containing variables - ** * We are inside a trigger - ** - ** If all of the above are false, then we can run this code just once - ** save the results, and reuse the same result on subsequent invocations. - */ - if( !ExprHasAnyProperty(pExpr, EP_VarSelect) && !pParse->pTriggerTab ){ - int mem = ++pParse->nMem; - testAddr = sqlite3VdbeAddOp1(v, OP_Once, mem); - } - -#ifndef SQLITE_OMIT_EXPLAIN - if( pParse->explain==2 ){ - char *zMsg = sqlite3MPrintf( - pParse->db, "EXECUTE %s%s SUBQUERY %d", testAddr>=0?"":"CORRELATED ", - pExpr->op==TK_IN?"LIST":"SCALAR", pParse->iNextSelectId - ); - sqlite3VdbeAddOp4(v, OP_Explain, pParse->iSelectId, 0, 0, zMsg, P4_DYNAMIC); - } -#endif - - switch( pExpr->op ){ - case TK_IN: { - char affinity; /* Affinity of the LHS of the IN */ - KeyInfo keyInfo; /* Keyinfo for the generated table */ - int addr; /* Address of OP_OpenEphemeral instruction */ - Expr *pLeft = pExpr->pLeft; /* the LHS of the IN operator */ - - if( rMayHaveNull ){ - sqlite3VdbeAddOp2(v, OP_Null, 0, rMayHaveNull); - } - - affinity = sqlite3ExprAffinity(pLeft); - - /* Whether this is an 'x IN(SELECT...)' or an 'x IN()' - ** expression it is handled the same way. An ephemeral table is - ** filled with single-field index keys representing the results - ** from the SELECT or the . - ** - ** If the 'x' expression is a column value, or the SELECT... - ** statement returns a column value, then the affinity of that - ** column is used to build the index keys. If both 'x' and the - ** SELECT... statement are columns, then numeric affinity is used - ** if either column has NUMERIC or INTEGER affinity. If neither - ** 'x' nor the SELECT... statement are columns, then numeric affinity - ** is used. - */ - pExpr->iTable = pParse->nTab++; - addr = sqlite3VdbeAddOp2(v, OP_OpenEphemeral, pExpr->iTable, !isRowid); - if( rMayHaveNull==0 ) sqlite3VdbeChangeP5(v, BTREE_UNORDERED); - memset(&keyInfo, 0, sizeof(keyInfo)); - keyInfo.nField = 1; - - if( ExprHasProperty(pExpr, EP_xIsSelect) ){ - /* Case 1: expr IN (SELECT ...) - ** - ** Generate code to write the results of the select into the temporary - ** table allocated and opened above. - */ - SelectDest dest; - ExprList *pEList; - - assert( !isRowid ); - sqlite3SelectDestInit(&dest, SRT_Set, pExpr->iTable); - dest.affinity = (u8)affinity; - assert( (pExpr->iTable&0x0000FFFF)==pExpr->iTable ); - pExpr->x.pSelect->iLimit = 0; - if( sqlite3Select(pParse, pExpr->x.pSelect, &dest) ){ - return 0; - } - pEList = pExpr->x.pSelect->pEList; - if( ALWAYS(pEList!=0 && pEList->nExpr>0) ){ - keyInfo.aColl[0] = sqlite3BinaryCompareCollSeq(pParse, pExpr->pLeft, - pEList->a[0].pExpr); - } - }else if( ALWAYS(pExpr->x.pList!=0) ){ - /* Case 2: expr IN (exprlist) - ** - ** For each expression, build an index key from the evaluation and - ** store it in the temporary table. If is a column, then use - ** that columns affinity when building index keys. If is not - ** a column, use numeric affinity. - */ - int i; - ExprList *pList = pExpr->x.pList; - struct ExprList_item *pItem; - int r1, r2, r3; - - if( !affinity ){ - affinity = SQLITE_AFF_NONE; - } - keyInfo.aColl[0] = sqlite3ExprCollSeq(pParse, pExpr->pLeft); - - /* Loop through each expression in . */ - r1 = sqlite3GetTempReg(pParse); - r2 = sqlite3GetTempReg(pParse); - sqlite3VdbeAddOp2(v, OP_Null, 0, r2); - for(i=pList->nExpr, pItem=pList->a; i>0; i--, pItem++){ - Expr *pE2 = pItem->pExpr; - int iValToIns; - - /* If the expression is not constant then we will need to - ** disable the test that was generated above that makes sure - ** this code only executes once. Because for a non-constant - ** expression we need to rerun this code each time. - */ - if( testAddr>=0 && !sqlite3ExprIsConstant(pE2) ){ - sqlite3VdbeChangeToNoop(v, testAddr); - testAddr = -1; - } - - /* Evaluate the expression and insert it into the temp table */ - if( isRowid && sqlite3ExprIsInteger(pE2, &iValToIns) ){ - sqlite3VdbeAddOp3(v, OP_InsertInt, pExpr->iTable, r2, iValToIns); - }else{ - r3 = sqlite3ExprCodeTarget(pParse, pE2, r1); - if( isRowid ){ - sqlite3VdbeAddOp2(v, OP_MustBeInt, r3, - sqlite3VdbeCurrentAddr(v)+2); - sqlite3VdbeAddOp3(v, OP_Insert, pExpr->iTable, r2, r3); - }else{ - sqlite3VdbeAddOp4(v, OP_MakeRecord, r3, 1, r2, &affinity, 1); - sqlite3ExprCacheAffinityChange(pParse, r3, 1); - sqlite3VdbeAddOp2(v, OP_IdxInsert, pExpr->iTable, r2); - } - } - } - sqlite3ReleaseTempReg(pParse, r1); - sqlite3ReleaseTempReg(pParse, r2); - } - if( !isRowid ){ - sqlite3VdbeChangeP4(v, addr, (void *)&keyInfo, P4_KEYINFO); - } - break; - } - - case TK_EXISTS: - case TK_SELECT: - default: { - /* If this has to be a scalar SELECT. Generate code to put the - ** value of this select in a memory cell and record the number - ** of the memory cell in iColumn. If this is an EXISTS, write - ** an integer 0 (not exists) or 1 (exists) into a memory cell - ** and record that memory cell in iColumn. - */ - Select *pSel; /* SELECT statement to encode */ - SelectDest dest; /* How to deal with SELECt result */ - - testcase( pExpr->op==TK_EXISTS ); - testcase( pExpr->op==TK_SELECT ); - assert( pExpr->op==TK_EXISTS || pExpr->op==TK_SELECT ); - - assert( ExprHasProperty(pExpr, EP_xIsSelect) ); - pSel = pExpr->x.pSelect; - sqlite3SelectDestInit(&dest, 0, ++pParse->nMem); - if( pExpr->op==TK_SELECT ){ - dest.eDest = SRT_Mem; - sqlite3VdbeAddOp2(v, OP_Null, 0, dest.iParm); - VdbeComment((v, "Init subquery result")); - }else{ - dest.eDest = SRT_Exists; - sqlite3VdbeAddOp2(v, OP_Integer, 0, dest.iParm); - VdbeComment((v, "Init EXISTS result")); - } - sqlite3ExprDelete(pParse->db, pSel->pLimit); - pSel->pLimit = sqlite3PExpr(pParse, TK_INTEGER, 0, 0, - &sqlite3IntTokens[1]); - pSel->iLimit = 0; - if( sqlite3Select(pParse, pSel, &dest) ){ - return 0; - } - rReg = dest.iParm; - ExprSetIrreducible(pExpr); - break; - } - } - - if( testAddr>=0 ){ - sqlite3VdbeJumpHere(v, testAddr); - } - sqlite3ExprCachePop(pParse, 1); - - return rReg; -} -#endif /* SQLITE_OMIT_SUBQUERY */ - -#ifndef SQLITE_OMIT_SUBQUERY -/* -** Generate code for an IN expression. -** -** x IN (SELECT ...) -** x IN (value, value, ...) -** -** The left-hand side (LHS) is a scalar expression. The right-hand side (RHS) -** is an array of zero or more values. The expression is true if the LHS is -** contained within the RHS. The value of the expression is unknown (NULL) -** if the LHS is NULL or if the LHS is not contained within the RHS and the -** RHS contains one or more NULL values. -** -** This routine generates code will jump to destIfFalse if the LHS is not -** contained within the RHS. If due to NULLs we cannot determine if the LHS -** is contained in the RHS then jump to destIfNull. If the LHS is contained -** within the RHS then fall through. -*/ -static void sqlite3ExprCodeIN( - Parse *pParse, /* Parsing and code generating context */ - Expr *pExpr, /* The IN expression */ - int destIfFalse, /* Jump here if LHS is not contained in the RHS */ - int destIfNull /* Jump here if the results are unknown due to NULLs */ -){ - int rRhsHasNull = 0; /* Register that is true if RHS contains NULL values */ - char affinity; /* Comparison affinity to use */ - int eType; /* Type of the RHS */ - int r1; /* Temporary use register */ - Vdbe *v; /* Statement under construction */ - - /* Compute the RHS. After this step, the table with cursor - ** pExpr->iTable will contains the values that make up the RHS. - */ - v = pParse->pVdbe; - assert( v!=0 ); /* OOM detected prior to this routine */ - VdbeNoopComment((v, "begin IN expr")); - eType = sqlite3FindInIndex(pParse, pExpr, &rRhsHasNull); - - /* Figure out the affinity to use to create a key from the results - ** of the expression. affinityStr stores a static string suitable for - ** P4 of OP_MakeRecord. - */ - affinity = comparisonAffinity(pExpr); - - /* Code the LHS, the from " IN (...)". - */ - sqlite3ExprCachePush(pParse); - r1 = sqlite3GetTempReg(pParse); - sqlite3ExprCode(pParse, pExpr->pLeft, r1); - - /* If the LHS is NULL, then the result is either false or NULL depending - ** on whether the RHS is empty or not, respectively. - */ - if( destIfNull==destIfFalse ){ - /* Shortcut for the common case where the false and NULL outcomes are - ** the same. */ - sqlite3VdbeAddOp2(v, OP_IsNull, r1, destIfNull); - }else{ - int addr1 = sqlite3VdbeAddOp1(v, OP_NotNull, r1); - sqlite3VdbeAddOp2(v, OP_Rewind, pExpr->iTable, destIfFalse); - sqlite3VdbeAddOp2(v, OP_Goto, 0, destIfNull); - sqlite3VdbeJumpHere(v, addr1); - } - - if( eType==IN_INDEX_ROWID ){ - /* In this case, the RHS is the ROWID of table b-tree - */ - sqlite3VdbeAddOp2(v, OP_MustBeInt, r1, destIfFalse); - sqlite3VdbeAddOp3(v, OP_NotExists, pExpr->iTable, destIfFalse, r1); - }else{ - /* In this case, the RHS is an index b-tree. - */ - sqlite3VdbeAddOp4(v, OP_Affinity, r1, 1, 0, &affinity, 1); - - /* If the set membership test fails, then the result of the - ** "x IN (...)" expression must be either 0 or NULL. If the set - ** contains no NULL values, then the result is 0. If the set - ** contains one or more NULL values, then the result of the - ** expression is also NULL. - */ - if( rRhsHasNull==0 || destIfFalse==destIfNull ){ - /* This branch runs if it is known at compile time that the RHS - ** cannot contain NULL values. This happens as the result - ** of a "NOT NULL" constraint in the database schema. - ** - ** Also run this branch if NULL is equivalent to FALSE - ** for this particular IN operator. - */ - sqlite3VdbeAddOp4Int(v, OP_NotFound, pExpr->iTable, destIfFalse, r1, 1); - - }else{ - /* In this branch, the RHS of the IN might contain a NULL and - ** the presence of a NULL on the RHS makes a difference in the - ** outcome. - */ - int j1, j2, j3; - - /* First check to see if the LHS is contained in the RHS. If so, - ** then the presence of NULLs in the RHS does not matter, so jump - ** over all of the code that follows. - */ - j1 = sqlite3VdbeAddOp4Int(v, OP_Found, pExpr->iTable, 0, r1, 1); - - /* Here we begin generating code that runs if the LHS is not - ** contained within the RHS. Generate additional code that - ** tests the RHS for NULLs. If the RHS contains a NULL then - ** jump to destIfNull. If there are no NULLs in the RHS then - ** jump to destIfFalse. - */ - j2 = sqlite3VdbeAddOp1(v, OP_NotNull, rRhsHasNull); - j3 = sqlite3VdbeAddOp4Int(v, OP_Found, pExpr->iTable, 0, rRhsHasNull, 1); - sqlite3VdbeAddOp2(v, OP_Integer, -1, rRhsHasNull); - sqlite3VdbeJumpHere(v, j3); - sqlite3VdbeAddOp2(v, OP_AddImm, rRhsHasNull, 1); - sqlite3VdbeJumpHere(v, j2); - - /* Jump to the appropriate target depending on whether or not - ** the RHS contains a NULL - */ - sqlite3VdbeAddOp2(v, OP_If, rRhsHasNull, destIfNull); - sqlite3VdbeAddOp2(v, OP_Goto, 0, destIfFalse); - - /* The OP_Found at the top of this branch jumps here when true, - ** causing the overall IN expression evaluation to fall through. - */ - sqlite3VdbeJumpHere(v, j1); - } - } - sqlite3ReleaseTempReg(pParse, r1); - sqlite3ExprCachePop(pParse, 1); - VdbeComment((v, "end IN expr")); -} -#endif /* SQLITE_OMIT_SUBQUERY */ - -/* -** Duplicate an 8-byte value -*/ -static char *dup8bytes(Vdbe *v, const char *in){ - char *out = sqlite3DbMallocRaw(sqlite3VdbeDb(v), 8); - if( out ){ - memcpy(out, in, 8); - } - return out; -} - -#ifndef SQLITE_OMIT_FLOATING_POINT -/* -** Generate an instruction that will put the floating point -** value described by z[0..n-1] into register iMem. -** -** The z[] string will probably not be zero-terminated. But the -** z[n] character is guaranteed to be something that does not look -** like the continuation of the number. -*/ -static void codeReal(Vdbe *v, const char *z, int negateFlag, int iMem){ - if( ALWAYS(z!=0) ){ - double value; - char *zV; - sqlite3AtoF(z, &value, sqlite3Strlen30(z), SQLITE_UTF8); - assert( !sqlite3IsNaN(value) ); /* The new AtoF never returns NaN */ - if( negateFlag ) value = -value; - zV = dup8bytes(v, (char*)&value); - sqlite3VdbeAddOp4(v, OP_Real, 0, iMem, 0, zV, P4_REAL); - } -} -#endif - - -/* -** Generate an instruction that will put the integer describe by -** text z[0..n-1] into register iMem. -** -** Expr.u.zToken is always UTF8 and zero-terminated. -*/ -static void codeInteger(Parse *pParse, Expr *pExpr, int negFlag, int iMem){ - Vdbe *v = pParse->pVdbe; - if( pExpr->flags & EP_IntValue ){ - int i = pExpr->u.iValue; - assert( i>=0 ); - if( negFlag ) i = -i; - sqlite3VdbeAddOp2(v, OP_Integer, i, iMem); - }else{ - int c; - i64 value; - const char *z = pExpr->u.zToken; - assert( z!=0 ); - c = sqlite3Atoi64(z, &value, sqlite3Strlen30(z), SQLITE_UTF8); - if( c==0 || (c==2 && negFlag) ){ - char *zV; - if( negFlag ){ value = c==2 ? SMALLEST_INT64 : -value; } - zV = dup8bytes(v, (char*)&value); - sqlite3VdbeAddOp4(v, OP_Int64, 0, iMem, 0, zV, P4_INT64); - }else{ -#ifdef SQLITE_OMIT_FLOATING_POINT - sqlite3ErrorMsg(pParse, "oversized integer: %s%s", negFlag ? "-" : "", z); -#else - codeReal(v, z, negFlag, iMem); -#endif - } - } -} - -/* -** Clear a cache entry. -*/ -static void cacheEntryClear(Parse *pParse, struct yColCache *p){ - if( p->tempReg ){ - if( pParse->nTempRegaTempReg) ){ - pParse->aTempReg[pParse->nTempReg++] = p->iReg; - } - p->tempReg = 0; - } -} - - -/* -** Record in the column cache that a particular column from a -** particular table is stored in a particular register. -*/ -void sqlite3ExprCacheStore(Parse *pParse, int iTab, int iCol, int iReg){ - int i; - int minLru; - int idxLru; - struct yColCache *p; - - assert( iReg>0 ); /* Register numbers are always positive */ - assert( iCol>=-1 && iCol<32768 ); /* Finite column numbers */ - - /* The SQLITE_ColumnCache flag disables the column cache. This is used - ** for testing only - to verify that SQLite always gets the same answer - ** with and without the column cache. - */ - if( pParse->db->flags & SQLITE_ColumnCache ) return; - - /* First replace any existing entry. - ** - ** Actually, the way the column cache is currently used, we are guaranteed - ** that the object will never already be in cache. Verify this guarantee. - */ -#ifndef NDEBUG - for(i=0, p=pParse->aColCache; iiReg && p->iTable==iTab && p->iColumn==iCol ){ - cacheEntryClear(pParse, p); - p->iLevel = pParse->iCacheLevel; - p->iReg = iReg; - p->lru = pParse->iCacheCnt++; - return; - } -#endif - assert( p->iReg==0 || p->iTable!=iTab || p->iColumn!=iCol ); - } -#endif - - /* Find an empty slot and replace it */ - for(i=0, p=pParse->aColCache; iiReg==0 ){ - p->iLevel = pParse->iCacheLevel; - p->iTable = iTab; - p->iColumn = iCol; - p->iReg = iReg; - p->tempReg = 0; - p->lru = pParse->iCacheCnt++; - return; - } - } - - /* Replace the last recently used */ - minLru = 0x7fffffff; - idxLru = -1; - for(i=0, p=pParse->aColCache; ilrulru; - } - } - if( ALWAYS(idxLru>=0) ){ - p = &pParse->aColCache[idxLru]; - p->iLevel = pParse->iCacheLevel; - p->iTable = iTab; - p->iColumn = iCol; - p->iReg = iReg; - p->tempReg = 0; - p->lru = pParse->iCacheCnt++; - return; - } -} - -/* -** Indicate that registers between iReg..iReg+nReg-1 are being overwritten. -** Purge the range of registers from the column cache. -*/ -void sqlite3ExprCacheRemove(Parse *pParse, int iReg, int nReg){ - int i; - int iLast = iReg + nReg - 1; - struct yColCache *p; - for(i=0, p=pParse->aColCache; iiReg; - if( r>=iReg && r<=iLast ){ - cacheEntryClear(pParse, p); - p->iReg = 0; - } - } -} - -/* -** Remember the current column cache context. Any new entries added -** added to the column cache after this call are removed when the -** corresponding pop occurs. -*/ -void sqlite3ExprCachePush(Parse *pParse){ - pParse->iCacheLevel++; -} - -/* -** Remove from the column cache any entries that were added since the -** the previous N Push operations. In other words, restore the cache -** to the state it was in N Pushes ago. -*/ -void sqlite3ExprCachePop(Parse *pParse, int N){ - int i; - struct yColCache *p; - assert( N>0 ); - assert( pParse->iCacheLevel>=N ); - pParse->iCacheLevel -= N; - for(i=0, p=pParse->aColCache; iiReg && p->iLevel>pParse->iCacheLevel ){ - cacheEntryClear(pParse, p); - p->iReg = 0; - } - } -} - -/* -** When a cached column is reused, make sure that its register is -** no longer available as a temp register. ticket #3879: that same -** register might be in the cache in multiple places, so be sure to -** get them all. -*/ -static void sqlite3ExprCachePinRegister(Parse *pParse, int iReg){ - int i; - struct yColCache *p; - for(i=0, p=pParse->aColCache; iiReg==iReg ){ - p->tempReg = 0; - } - } -} - -/* -** Generate code to extract the value of the iCol-th column of a table. -*/ -void sqlite3ExprCodeGetColumnOfTable( - Vdbe *v, /* The VDBE under construction */ - Table *pTab, /* The table containing the value */ - int iTabCur, /* The cursor for this table */ - int iCol, /* Index of the column to extract */ - int regOut /* Extract the valud into this register */ -){ - if( iCol<0 || iCol==pTab->iPKey ){ - sqlite3VdbeAddOp2(v, OP_Rowid, iTabCur, regOut); - }else{ - int op = IsVirtual(pTab) ? OP_VColumn : OP_Column; - sqlite3VdbeAddOp3(v, op, iTabCur, iCol, regOut); - } - if( iCol>=0 ){ - sqlite3ColumnDefault(v, pTab, iCol, regOut); - } -} - -/* -** Generate code that will extract the iColumn-th column from -** table pTab and store the column value in a register. An effort -** is made to store the column value in register iReg, but this is -** not guaranteed. The location of the column value is returned. -** -** There must be an open cursor to pTab in iTable when this routine -** is called. If iColumn<0 then code is generated that extracts the rowid. -*/ -int sqlite3ExprCodeGetColumn( - Parse *pParse, /* Parsing and code generating context */ - Table *pTab, /* Description of the table we are reading from */ - int iColumn, /* Index of the table column */ - int iTable, /* The cursor pointing to the table */ - int iReg /* Store results here */ -){ - Vdbe *v = pParse->pVdbe; - int i; - struct yColCache *p; - - for(i=0, p=pParse->aColCache; iiReg>0 && p->iTable==iTable && p->iColumn==iColumn ){ - p->lru = pParse->iCacheCnt++; - sqlite3ExprCachePinRegister(pParse, p->iReg); - return p->iReg; - } - } - assert( v!=0 ); - sqlite3ExprCodeGetColumnOfTable(v, pTab, iTable, iColumn, iReg); - sqlite3ExprCacheStore(pParse, iTable, iColumn, iReg); - return iReg; -} - -/* -** Clear all column cache entries. -*/ -void sqlite3ExprCacheClear(Parse *pParse){ - int i; - struct yColCache *p; - - for(i=0, p=pParse->aColCache; iiReg ){ - cacheEntryClear(pParse, p); - p->iReg = 0; - } - } -} - -/* -** Record the fact that an affinity change has occurred on iCount -** registers starting with iStart. -*/ -void sqlite3ExprCacheAffinityChange(Parse *pParse, int iStart, int iCount){ - sqlite3ExprCacheRemove(pParse, iStart, iCount); -} - -/* -** Generate code to move content from registers iFrom...iFrom+nReg-1 -** over to iTo..iTo+nReg-1. Keep the column cache up-to-date. -*/ -void sqlite3ExprCodeMove(Parse *pParse, int iFrom, int iTo, int nReg){ - int i; - struct yColCache *p; - if( NEVER(iFrom==iTo) ) return; - sqlite3VdbeAddOp3(pParse->pVdbe, OP_Move, iFrom, iTo, nReg); - for(i=0, p=pParse->aColCache; iiReg; - if( x>=iFrom && xiReg += iTo-iFrom; - } - } -} - -/* -** Generate code to copy content from registers iFrom...iFrom+nReg-1 -** over to iTo..iTo+nReg-1. -*/ -void sqlite3ExprCodeCopy(Parse *pParse, int iFrom, int iTo, int nReg){ - int i; - if( NEVER(iFrom==iTo) ) return; - for(i=0; ipVdbe, OP_Copy, iFrom+i, iTo+i); - } -} - -#if defined(SQLITE_DEBUG) || defined(SQLITE_COVERAGE_TEST) -/* -** Return true if any register in the range iFrom..iTo (inclusive) -** is used as part of the column cache. -** -** This routine is used within assert() and testcase() macros only -** and does not appear in a normal build. -*/ -static int usedAsColumnCache(Parse *pParse, int iFrom, int iTo){ - int i; - struct yColCache *p; - for(i=0, p=pParse->aColCache; iiReg; - if( r>=iFrom && r<=iTo ) return 1; /*NO_TEST*/ - } - return 0; -} -#endif /* SQLITE_DEBUG || SQLITE_COVERAGE_TEST */ - -/* -** Generate code into the current Vdbe to evaluate the given -** expression. Attempt to store the results in register "target". -** Return the register where results are stored. -** -** With this routine, there is no guarantee that results will -** be stored in target. The result might be stored in some other -** register if it is convenient to do so. The calling function -** must check the return code and move the results to the desired -** register. -*/ -int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target){ - Vdbe *v = pParse->pVdbe; /* The VM under construction */ - int op; /* The opcode being coded */ - int inReg = target; /* Results stored in register inReg */ - int regFree1 = 0; /* If non-zero free this temporary register */ - int regFree2 = 0; /* If non-zero free this temporary register */ - int r1, r2, r3, r4; /* Various register numbers */ - sqlite3 *db = pParse->db; /* The database connection */ - - assert( target>0 && target<=pParse->nMem ); - if( v==0 ){ - assert( pParse->db->mallocFailed ); - return 0; - } - - if( pExpr==0 ){ - op = TK_NULL; - }else{ - op = pExpr->op; - } - switch( op ){ - case TK_AGG_COLUMN: { - AggInfo *pAggInfo = pExpr->pAggInfo; - struct AggInfo_col *pCol = &pAggInfo->aCol[pExpr->iAgg]; - if( !pAggInfo->directMode ){ - assert( pCol->iMem>0 ); - inReg = pCol->iMem; - break; - }else if( pAggInfo->useSortingIdx ){ - sqlite3VdbeAddOp3(v, OP_Column, pAggInfo->sortingIdxPTab, - pCol->iSorterColumn, target); - break; - } - /* Otherwise, fall thru into the TK_COLUMN case */ - } - case TK_COLUMN: { - if( pExpr->iTable<0 ){ - /* This only happens when coding check constraints */ - assert( pParse->ckBase>0 ); - inReg = pExpr->iColumn + pParse->ckBase; - }else{ - inReg = sqlite3ExprCodeGetColumn(pParse, pExpr->pTab, - pExpr->iColumn, pExpr->iTable, target); - } - break; - } - case TK_INTEGER: { - codeInteger(pParse, pExpr, 0, target); - break; - } -#ifndef SQLITE_OMIT_FLOATING_POINT - case TK_FLOAT: { - assert( !ExprHasProperty(pExpr, EP_IntValue) ); - codeReal(v, pExpr->u.zToken, 0, target); - break; - } -#endif - case TK_STRING: { - assert( !ExprHasProperty(pExpr, EP_IntValue) ); - sqlite3VdbeAddOp4(v, OP_String8, 0, target, 0, pExpr->u.zToken, 0); - break; - } - case TK_NULL: { - sqlite3VdbeAddOp2(v, OP_Null, 0, target); - break; - } -#ifndef SQLITE_OMIT_BLOB_LITERAL - case TK_BLOB: { - int n; - const char *z; - char *zBlob; - assert( !ExprHasProperty(pExpr, EP_IntValue) ); - assert( pExpr->u.zToken[0]=='x' || pExpr->u.zToken[0]=='X' ); - assert( pExpr->u.zToken[1]=='\'' ); - z = &pExpr->u.zToken[2]; - n = sqlite3Strlen30(z) - 1; - assert( z[n]=='\'' ); - zBlob = sqlite3HexToBlob(sqlite3VdbeDb(v), z, n); - sqlite3VdbeAddOp4(v, OP_Blob, n/2, target, 0, zBlob, P4_DYNAMIC); - break; - } -#endif - case TK_VARIABLE: { - assert( !ExprHasProperty(pExpr, EP_IntValue) ); - assert( pExpr->u.zToken!=0 ); - assert( pExpr->u.zToken[0]!=0 ); - sqlite3VdbeAddOp2(v, OP_Variable, pExpr->iColumn, target); - if( pExpr->u.zToken[1]!=0 ){ - assert( pExpr->u.zToken[0]=='?' - || strcmp(pExpr->u.zToken, pParse->azVar[pExpr->iColumn-1])==0 ); - sqlite3VdbeChangeP4(v, -1, pParse->azVar[pExpr->iColumn-1], P4_STATIC); - } - break; - } - case TK_REGISTER: { - inReg = pExpr->iTable; - break; - } - case TK_AS: { - inReg = sqlite3ExprCodeTarget(pParse, pExpr->pLeft, target); - break; - } -#ifndef SQLITE_OMIT_CAST - case TK_CAST: { - /* Expressions of the form: CAST(pLeft AS token) */ - int aff, to_op; - inReg = sqlite3ExprCodeTarget(pParse, pExpr->pLeft, target); - assert( !ExprHasProperty(pExpr, EP_IntValue) ); - aff = sqlite3AffinityType(pExpr->u.zToken); - to_op = aff - SQLITE_AFF_TEXT + OP_ToText; - assert( to_op==OP_ToText || aff!=SQLITE_AFF_TEXT ); - assert( to_op==OP_ToBlob || aff!=SQLITE_AFF_NONE ); - assert( to_op==OP_ToNumeric || aff!=SQLITE_AFF_NUMERIC ); - assert( to_op==OP_ToInt || aff!=SQLITE_AFF_INTEGER ); - assert( to_op==OP_ToReal || aff!=SQLITE_AFF_REAL ); - testcase( to_op==OP_ToText ); - testcase( to_op==OP_ToBlob ); - testcase( to_op==OP_ToNumeric ); - testcase( to_op==OP_ToInt ); - testcase( to_op==OP_ToReal ); - if( inReg!=target ){ - sqlite3VdbeAddOp2(v, OP_SCopy, inReg, target); - inReg = target; - } - sqlite3VdbeAddOp1(v, to_op, inReg); - testcase( usedAsColumnCache(pParse, inReg, inReg) ); - sqlite3ExprCacheAffinityChange(pParse, inReg, 1); - break; - } -#endif /* SQLITE_OMIT_CAST */ - case TK_LT: - case TK_LE: - case TK_GT: - case TK_GE: - case TK_NE: - case TK_EQ: { - assert( TK_LT==OP_Lt ); - assert( TK_LE==OP_Le ); - assert( TK_GT==OP_Gt ); - assert( TK_GE==OP_Ge ); - assert( TK_EQ==OP_Eq ); - assert( TK_NE==OP_Ne ); - testcase( op==TK_LT ); - testcase( op==TK_LE ); - testcase( op==TK_GT ); - testcase( op==TK_GE ); - testcase( op==TK_EQ ); - testcase( op==TK_NE ); - r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free1); - r2 = sqlite3ExprCodeTemp(pParse, pExpr->pRight, ®Free2); - codeCompare(pParse, pExpr->pLeft, pExpr->pRight, op, - r1, r2, inReg, SQLITE_STOREP2); - testcase( regFree1==0 ); - testcase( regFree2==0 ); - break; - } - case TK_IS: - case TK_ISNOT: { - testcase( op==TK_IS ); - testcase( op==TK_ISNOT ); - r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free1); - r2 = sqlite3ExprCodeTemp(pParse, pExpr->pRight, ®Free2); - op = (op==TK_IS) ? TK_EQ : TK_NE; - codeCompare(pParse, pExpr->pLeft, pExpr->pRight, op, - r1, r2, inReg, SQLITE_STOREP2 | SQLITE_NULLEQ); - testcase( regFree1==0 ); - testcase( regFree2==0 ); - break; - } - case TK_AND: - case TK_OR: - case TK_PLUS: - case TK_STAR: - case TK_MINUS: - case TK_REM: - case TK_BITAND: - case TK_BITOR: - case TK_SLASH: - case TK_LSHIFT: - case TK_RSHIFT: - case TK_CONCAT: { - assert( TK_AND==OP_And ); - assert( TK_OR==OP_Or ); - assert( TK_PLUS==OP_Add ); - assert( TK_MINUS==OP_Subtract ); - assert( TK_REM==OP_Remainder ); - assert( TK_BITAND==OP_BitAnd ); - assert( TK_BITOR==OP_BitOr ); - assert( TK_SLASH==OP_Divide ); - assert( TK_LSHIFT==OP_ShiftLeft ); - assert( TK_RSHIFT==OP_ShiftRight ); - assert( TK_CONCAT==OP_Concat ); - testcase( op==TK_AND ); - testcase( op==TK_OR ); - testcase( op==TK_PLUS ); - testcase( op==TK_MINUS ); - testcase( op==TK_REM ); - testcase( op==TK_BITAND ); - testcase( op==TK_BITOR ); - testcase( op==TK_SLASH ); - testcase( op==TK_LSHIFT ); - testcase( op==TK_RSHIFT ); - testcase( op==TK_CONCAT ); - r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free1); - r2 = sqlite3ExprCodeTemp(pParse, pExpr->pRight, ®Free2); - sqlite3VdbeAddOp3(v, op, r2, r1, target); - testcase( regFree1==0 ); - testcase( regFree2==0 ); - break; - } - case TK_UMINUS: { - Expr *pLeft = pExpr->pLeft; - assert( pLeft ); - if( pLeft->op==TK_INTEGER ){ - codeInteger(pParse, pLeft, 1, target); -#ifndef SQLITE_OMIT_FLOATING_POINT - }else if( pLeft->op==TK_FLOAT ){ - assert( !ExprHasProperty(pExpr, EP_IntValue) ); - codeReal(v, pLeft->u.zToken, 1, target); -#endif - }else{ - regFree1 = r1 = sqlite3GetTempReg(pParse); - sqlite3VdbeAddOp2(v, OP_Integer, 0, r1); - r2 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free2); - sqlite3VdbeAddOp3(v, OP_Subtract, r2, r1, target); - testcase( regFree2==0 ); - } - inReg = target; - break; - } - case TK_BITNOT: - case TK_NOT: { - assert( TK_BITNOT==OP_BitNot ); - assert( TK_NOT==OP_Not ); - testcase( op==TK_BITNOT ); - testcase( op==TK_NOT ); - r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free1); - testcase( regFree1==0 ); - inReg = target; - sqlite3VdbeAddOp2(v, op, r1, inReg); - break; - } - case TK_ISNULL: - case TK_NOTNULL: { - int addr; - assert( TK_ISNULL==OP_IsNull ); - assert( TK_NOTNULL==OP_NotNull ); - testcase( op==TK_ISNULL ); - testcase( op==TK_NOTNULL ); - sqlite3VdbeAddOp2(v, OP_Integer, 1, target); - r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free1); - testcase( regFree1==0 ); - addr = sqlite3VdbeAddOp1(v, op, r1); - sqlite3VdbeAddOp2(v, OP_AddImm, target, -1); - sqlite3VdbeJumpHere(v, addr); - break; - } - case TK_AGG_FUNCTION: { - AggInfo *pInfo = pExpr->pAggInfo; - if( pInfo==0 ){ - assert( !ExprHasProperty(pExpr, EP_IntValue) ); - sqlite3ErrorMsg(pParse, "misuse of aggregate: %s()", pExpr->u.zToken); - }else{ - inReg = pInfo->aFunc[pExpr->iAgg].iMem; - } - break; - } - case TK_CONST_FUNC: - case TK_FUNCTION: { - ExprList *pFarg; /* List of function arguments */ - int nFarg; /* Number of function arguments */ - FuncDef *pDef; /* The function definition object */ - int nId; /* Length of the function name in bytes */ - const char *zId; /* The function name */ - int constMask = 0; /* Mask of function arguments that are constant */ - int i; /* Loop counter */ - u8 enc = ENC(db); /* The text encoding used by this database */ - CollSeq *pColl = 0; /* A collating sequence */ - - assert( !ExprHasProperty(pExpr, EP_xIsSelect) ); - testcase( op==TK_CONST_FUNC ); - testcase( op==TK_FUNCTION ); - if( ExprHasAnyProperty(pExpr, EP_TokenOnly) ){ - pFarg = 0; - }else{ - pFarg = pExpr->x.pList; - } - nFarg = pFarg ? pFarg->nExpr : 0; - assert( !ExprHasProperty(pExpr, EP_IntValue) ); - zId = pExpr->u.zToken; - nId = sqlite3Strlen30(zId); - pDef = sqlite3FindFunction(db, zId, nId, nFarg, enc, 0); - if( pDef==0 ){ - sqlite3ErrorMsg(pParse, "unknown function: %.*s()", nId, zId); - break; - } - - /* Attempt a direct implementation of the built-in COALESCE() and - ** IFNULL() functions. This avoids unnecessary evalation of - ** arguments past the first non-NULL argument. - */ - if( pDef->flags & SQLITE_FUNC_COALESCE ){ - int endCoalesce = sqlite3VdbeMakeLabel(v); - assert( nFarg>=2 ); - sqlite3ExprCode(pParse, pFarg->a[0].pExpr, target); - for(i=1; ia[i].pExpr, target); - sqlite3ExprCachePop(pParse, 1); - } - sqlite3VdbeResolveLabel(v, endCoalesce); - break; - } - - - if( pFarg ){ - r1 = sqlite3GetTempRange(pParse, nFarg); - sqlite3ExprCachePush(pParse); /* Ticket 2ea2425d34be */ - sqlite3ExprCodeExprList(pParse, pFarg, r1, 1); - sqlite3ExprCachePop(pParse, 1); /* Ticket 2ea2425d34be */ - }else{ - r1 = 0; - } -#ifndef SQLITE_OMIT_VIRTUALTABLE - /* Possibly overload the function if the first argument is - ** a virtual table column. - ** - ** For infix functions (LIKE, GLOB, REGEXP, and MATCH) use the - ** second argument, not the first, as the argument to test to - ** see if it is a column in a virtual table. This is done because - ** the left operand of infix functions (the operand we want to - ** control overloading) ends up as the second argument to the - ** function. The expression "A glob B" is equivalent to - ** "glob(B,A). We want to use the A in "A glob B" to test - ** for function overloading. But we use the B term in "glob(B,A)". - */ - if( nFarg>=2 && (pExpr->flags & EP_InfixFunc) ){ - pDef = sqlite3VtabOverloadFunction(db, pDef, nFarg, pFarg->a[1].pExpr); - }else if( nFarg>0 ){ - pDef = sqlite3VtabOverloadFunction(db, pDef, nFarg, pFarg->a[0].pExpr); - } -#endif - for(i=0; ia[i].pExpr) ){ - constMask |= (1<flags & SQLITE_FUNC_NEEDCOLL)!=0 && !pColl ){ - pColl = sqlite3ExprCollSeq(pParse, pFarg->a[i].pExpr); - } - } - if( pDef->flags & SQLITE_FUNC_NEEDCOLL ){ - if( !pColl ) pColl = db->pDfltColl; - sqlite3VdbeAddOp4(v, OP_CollSeq, 0, 0, 0, (char *)pColl, P4_COLLSEQ); - } - sqlite3VdbeAddOp4(v, OP_Function, constMask, r1, target, - (char*)pDef, P4_FUNCDEF); - sqlite3VdbeChangeP5(v, (u8)nFarg); - if( nFarg ){ - sqlite3ReleaseTempRange(pParse, r1, nFarg); - } - break; - } -#ifndef SQLITE_OMIT_SUBQUERY - case TK_EXISTS: - case TK_SELECT: { - testcase( op==TK_EXISTS ); - testcase( op==TK_SELECT ); - inReg = sqlite3CodeSubselect(pParse, pExpr, 0, 0); - break; - } - case TK_IN: { - int destIfFalse = sqlite3VdbeMakeLabel(v); - int destIfNull = sqlite3VdbeMakeLabel(v); - sqlite3VdbeAddOp2(v, OP_Null, 0, target); - sqlite3ExprCodeIN(pParse, pExpr, destIfFalse, destIfNull); - sqlite3VdbeAddOp2(v, OP_Integer, 1, target); - sqlite3VdbeResolveLabel(v, destIfFalse); - sqlite3VdbeAddOp2(v, OP_AddImm, target, 0); - sqlite3VdbeResolveLabel(v, destIfNull); - break; - } -#endif /* SQLITE_OMIT_SUBQUERY */ - - - /* - ** x BETWEEN y AND z - ** - ** This is equivalent to - ** - ** x>=y AND x<=z - ** - ** X is stored in pExpr->pLeft. - ** Y is stored in pExpr->pList->a[0].pExpr. - ** Z is stored in pExpr->pList->a[1].pExpr. - */ - case TK_BETWEEN: { - Expr *pLeft = pExpr->pLeft; - struct ExprList_item *pLItem = pExpr->x.pList->a; - Expr *pRight = pLItem->pExpr; - - r1 = sqlite3ExprCodeTemp(pParse, pLeft, ®Free1); - r2 = sqlite3ExprCodeTemp(pParse, pRight, ®Free2); - testcase( regFree1==0 ); - testcase( regFree2==0 ); - r3 = sqlite3GetTempReg(pParse); - r4 = sqlite3GetTempReg(pParse); - codeCompare(pParse, pLeft, pRight, OP_Ge, - r1, r2, r3, SQLITE_STOREP2); - pLItem++; - pRight = pLItem->pExpr; - sqlite3ReleaseTempReg(pParse, regFree2); - r2 = sqlite3ExprCodeTemp(pParse, pRight, ®Free2); - testcase( regFree2==0 ); - codeCompare(pParse, pLeft, pRight, OP_Le, r1, r2, r4, SQLITE_STOREP2); - sqlite3VdbeAddOp3(v, OP_And, r3, r4, target); - sqlite3ReleaseTempReg(pParse, r3); - sqlite3ReleaseTempReg(pParse, r4); - break; - } - case TK_UPLUS: { - inReg = sqlite3ExprCodeTarget(pParse, pExpr->pLeft, target); - break; - } - - case TK_TRIGGER: { - /* If the opcode is TK_TRIGGER, then the expression is a reference - ** to a column in the new.* or old.* pseudo-tables available to - ** trigger programs. In this case Expr.iTable is set to 1 for the - ** new.* pseudo-table, or 0 for the old.* pseudo-table. Expr.iColumn - ** is set to the column of the pseudo-table to read, or to -1 to - ** read the rowid field. - ** - ** The expression is implemented using an OP_Param opcode. The p1 - ** parameter is set to 0 for an old.rowid reference, or to (i+1) - ** to reference another column of the old.* pseudo-table, where - ** i is the index of the column. For a new.rowid reference, p1 is - ** set to (n+1), where n is the number of columns in each pseudo-table. - ** For a reference to any other column in the new.* pseudo-table, p1 - ** is set to (n+2+i), where n and i are as defined previously. For - ** example, if the table on which triggers are being fired is - ** declared as: - ** - ** CREATE TABLE t1(a, b); - ** - ** Then p1 is interpreted as follows: - ** - ** p1==0 -> old.rowid p1==3 -> new.rowid - ** p1==1 -> old.a p1==4 -> new.a - ** p1==2 -> old.b p1==5 -> new.b - */ - Table *pTab = pExpr->pTab; - int p1 = pExpr->iTable * (pTab->nCol+1) + 1 + pExpr->iColumn; - - assert( pExpr->iTable==0 || pExpr->iTable==1 ); - assert( pExpr->iColumn>=-1 && pExpr->iColumnnCol ); - assert( pTab->iPKey<0 || pExpr->iColumn!=pTab->iPKey ); - assert( p1>=0 && p1<(pTab->nCol*2+2) ); - - sqlite3VdbeAddOp2(v, OP_Param, p1, target); - VdbeComment((v, "%s.%s -> $%d", - (pExpr->iTable ? "new" : "old"), - (pExpr->iColumn<0 ? "rowid" : pExpr->pTab->aCol[pExpr->iColumn].zName), - target - )); - -#ifndef SQLITE_OMIT_FLOATING_POINT - /* If the column has REAL affinity, it may currently be stored as an - ** integer. Use OP_RealAffinity to make sure it is really real. */ - if( pExpr->iColumn>=0 - && pTab->aCol[pExpr->iColumn].affinity==SQLITE_AFF_REAL - ){ - sqlite3VdbeAddOp1(v, OP_RealAffinity, target); - } -#endif - break; - } - - - /* - ** Form A: - ** CASE x WHEN e1 THEN r1 WHEN e2 THEN r2 ... WHEN eN THEN rN ELSE y END - ** - ** Form B: - ** CASE WHEN e1 THEN r1 WHEN e2 THEN r2 ... WHEN eN THEN rN ELSE y END - ** - ** Form A is can be transformed into the equivalent form B as follows: - ** CASE WHEN x=e1 THEN r1 WHEN x=e2 THEN r2 ... - ** WHEN x=eN THEN rN ELSE y END - ** - ** X (if it exists) is in pExpr->pLeft. - ** Y is in pExpr->pRight. The Y is also optional. If there is no - ** ELSE clause and no other term matches, then the result of the - ** exprssion is NULL. - ** Ei is in pExpr->pList->a[i*2] and Ri is pExpr->pList->a[i*2+1]. - ** - ** The result of the expression is the Ri for the first matching Ei, - ** or if there is no matching Ei, the ELSE term Y, or if there is - ** no ELSE term, NULL. - */ - default: assert( op==TK_CASE ); { - int endLabel; /* GOTO label for end of CASE stmt */ - int nextCase; /* GOTO label for next WHEN clause */ - int nExpr; /* 2x number of WHEN terms */ - int i; /* Loop counter */ - ExprList *pEList; /* List of WHEN terms */ - struct ExprList_item *aListelem; /* Array of WHEN terms */ - Expr opCompare; /* The X==Ei expression */ - Expr cacheX; /* Cached expression X */ - Expr *pX; /* The X expression */ - Expr *pTest = 0; /* X==Ei (form A) or just Ei (form B) */ - VVA_ONLY( int iCacheLevel = pParse->iCacheLevel; ) - - assert( !ExprHasProperty(pExpr, EP_xIsSelect) && pExpr->x.pList ); - assert((pExpr->x.pList->nExpr % 2) == 0); - assert(pExpr->x.pList->nExpr > 0); - pEList = pExpr->x.pList; - aListelem = pEList->a; - nExpr = pEList->nExpr; - endLabel = sqlite3VdbeMakeLabel(v); - if( (pX = pExpr->pLeft)!=0 ){ - cacheX = *pX; - testcase( pX->op==TK_COLUMN ); - testcase( pX->op==TK_REGISTER ); - cacheX.iTable = sqlite3ExprCodeTemp(pParse, pX, ®Free1); - testcase( regFree1==0 ); - cacheX.op = TK_REGISTER; - opCompare.op = TK_EQ; - opCompare.pLeft = &cacheX; - pTest = &opCompare; - /* Ticket b351d95f9cd5ef17e9d9dbae18f5ca8611190001: - ** The value in regFree1 might get SCopy-ed into the file result. - ** So make sure that the regFree1 register is not reused for other - ** purposes and possibly overwritten. */ - regFree1 = 0; - } - for(i=0; iop==TK_COLUMN ); - sqlite3ExprIfFalse(pParse, pTest, nextCase, SQLITE_JUMPIFNULL); - testcase( aListelem[i+1].pExpr->op==TK_COLUMN ); - testcase( aListelem[i+1].pExpr->op==TK_REGISTER ); - sqlite3ExprCode(pParse, aListelem[i+1].pExpr, target); - sqlite3VdbeAddOp2(v, OP_Goto, 0, endLabel); - sqlite3ExprCachePop(pParse, 1); - sqlite3VdbeResolveLabel(v, nextCase); - } - if( pExpr->pRight ){ - sqlite3ExprCachePush(pParse); - sqlite3ExprCode(pParse, pExpr->pRight, target); - sqlite3ExprCachePop(pParse, 1); - }else{ - sqlite3VdbeAddOp2(v, OP_Null, 0, target); - } - assert( db->mallocFailed || pParse->nErr>0 - || pParse->iCacheLevel==iCacheLevel ); - sqlite3VdbeResolveLabel(v, endLabel); - break; - } -#ifndef SQLITE_OMIT_TRIGGER - case TK_RAISE: { - assert( pExpr->affinity==OE_Rollback - || pExpr->affinity==OE_Abort - || pExpr->affinity==OE_Fail - || pExpr->affinity==OE_Ignore - ); - if( !pParse->pTriggerTab ){ - sqlite3ErrorMsg(pParse, - "RAISE() may only be used within a trigger-program"); - return 0; - } - if( pExpr->affinity==OE_Abort ){ - sqlite3MayAbort(pParse); - } - assert( !ExprHasProperty(pExpr, EP_IntValue) ); - if( pExpr->affinity==OE_Ignore ){ - sqlite3VdbeAddOp4( - v, OP_Halt, SQLITE_OK, OE_Ignore, 0, pExpr->u.zToken,0); - }else{ - sqlite3HaltConstraint(pParse, pExpr->affinity, pExpr->u.zToken, 0); - } - - break; - } -#endif - } - sqlite3ReleaseTempReg(pParse, regFree1); - sqlite3ReleaseTempReg(pParse, regFree2); - return inReg; -} - -/* -** Generate code to evaluate an expression and store the results -** into a register. Return the register number where the results -** are stored. -** -** If the register is a temporary register that can be deallocated, -** then write its number into *pReg. If the result register is not -** a temporary, then set *pReg to zero. -*/ -int sqlite3ExprCodeTemp(Parse *pParse, Expr *pExpr, int *pReg){ - int r1 = sqlite3GetTempReg(pParse); - int r2 = sqlite3ExprCodeTarget(pParse, pExpr, r1); - if( r2==r1 ){ - *pReg = r1; - }else{ - sqlite3ReleaseTempReg(pParse, r1); - *pReg = 0; - } - return r2; -} - -/* -** Generate code that will evaluate expression pExpr and store the -** results in register target. The results are guaranteed to appear -** in register target. -*/ -int sqlite3ExprCode(Parse *pParse, Expr *pExpr, int target){ - int inReg; - - assert( target>0 && target<=pParse->nMem ); - if( pExpr && pExpr->op==TK_REGISTER ){ - sqlite3VdbeAddOp2(pParse->pVdbe, OP_Copy, pExpr->iTable, target); - }else{ - inReg = sqlite3ExprCodeTarget(pParse, pExpr, target); - assert( pParse->pVdbe || pParse->db->mallocFailed ); - if( inReg!=target && pParse->pVdbe ){ - sqlite3VdbeAddOp2(pParse->pVdbe, OP_SCopy, inReg, target); - } - } - return target; -} - -/* -** Generate code that evalutes the given expression and puts the result -** in register target. -** -** Also make a copy of the expression results into another "cache" register -** and modify the expression so that the next time it is evaluated, -** the result is a copy of the cache register. -** -** This routine is used for expressions that are used multiple -** times. They are evaluated once and the results of the expression -** are reused. -*/ -int sqlite3ExprCodeAndCache(Parse *pParse, Expr *pExpr, int target){ - Vdbe *v = pParse->pVdbe; - int inReg; - inReg = sqlite3ExprCode(pParse, pExpr, target); - assert( target>0 ); - /* This routine is called for terms to INSERT or UPDATE. And the only - ** other place where expressions can be converted into TK_REGISTER is - ** in WHERE clause processing. So as currently implemented, there is - ** no way for a TK_REGISTER to exist here. But it seems prudent to - ** keep the ALWAYS() in case the conditions above change with future - ** modifications or enhancements. */ - if( ALWAYS(pExpr->op!=TK_REGISTER) ){ - int iMem; - iMem = ++pParse->nMem; - sqlite3VdbeAddOp2(v, OP_Copy, inReg, iMem); - pExpr->iTable = iMem; - pExpr->op2 = pExpr->op; - pExpr->op = TK_REGISTER; - } - return inReg; -} - -/* -** Return TRUE if pExpr is an constant expression that is appropriate -** for factoring out of a loop. Appropriate expressions are: -** -** * Any expression that evaluates to two or more opcodes. -** -** * Any OP_Integer, OP_Real, OP_String, OP_Blob, OP_Null, -** or OP_Variable that does not need to be placed in a -** specific register. -** -** There is no point in factoring out single-instruction constant -** expressions that need to be placed in a particular register. -** We could factor them out, but then we would end up adding an -** OP_SCopy instruction to move the value into the correct register -** later. We might as well just use the original instruction and -** avoid the OP_SCopy. -*/ -static int isAppropriateForFactoring(Expr *p){ - if( !sqlite3ExprIsConstantNotJoin(p) ){ - return 0; /* Only constant expressions are appropriate for factoring */ - } - if( (p->flags & EP_FixedDest)==0 ){ - return 1; /* Any constant without a fixed destination is appropriate */ - } - while( p->op==TK_UPLUS ) p = p->pLeft; - switch( p->op ){ -#ifndef SQLITE_OMIT_BLOB_LITERAL - case TK_BLOB: -#endif - case TK_VARIABLE: - case TK_INTEGER: - case TK_FLOAT: - case TK_NULL: - case TK_STRING: { - testcase( p->op==TK_BLOB ); - testcase( p->op==TK_VARIABLE ); - testcase( p->op==TK_INTEGER ); - testcase( p->op==TK_FLOAT ); - testcase( p->op==TK_NULL ); - testcase( p->op==TK_STRING ); - /* Single-instruction constants with a fixed destination are - ** better done in-line. If we factor them, they will just end - ** up generating an OP_SCopy to move the value to the destination - ** register. */ - return 0; - } - case TK_UMINUS: { - if( p->pLeft->op==TK_FLOAT || p->pLeft->op==TK_INTEGER ){ - return 0; - } - break; - } - default: { - break; - } - } - return 1; -} - -/* -** If pExpr is a constant expression that is appropriate for -** factoring out of a loop, then evaluate the expression -** into a register and convert the expression into a TK_REGISTER -** expression. -*/ -static int evalConstExpr(Walker *pWalker, Expr *pExpr){ - Parse *pParse = pWalker->pParse; - switch( pExpr->op ){ - case TK_IN: - case TK_REGISTER: { - return WRC_Prune; - } - case TK_FUNCTION: - case TK_AGG_FUNCTION: - case TK_CONST_FUNC: { - /* The arguments to a function have a fixed destination. - ** Mark them this way to avoid generated unneeded OP_SCopy - ** instructions. - */ - ExprList *pList = pExpr->x.pList; - assert( !ExprHasProperty(pExpr, EP_xIsSelect) ); - if( pList ){ - int i = pList->nExpr; - struct ExprList_item *pItem = pList->a; - for(; i>0; i--, pItem++){ - if( ALWAYS(pItem->pExpr) ) pItem->pExpr->flags |= EP_FixedDest; - } - } - break; - } - } - if( isAppropriateForFactoring(pExpr) ){ - int r1 = ++pParse->nMem; - int r2; - r2 = sqlite3ExprCodeTarget(pParse, pExpr, r1); - if( NEVER(r1!=r2) ) sqlite3ReleaseTempReg(pParse, r1); - pExpr->op2 = pExpr->op; - pExpr->op = TK_REGISTER; - pExpr->iTable = r2; - return WRC_Prune; - } - return WRC_Continue; -} - -/* -** Preevaluate constant subexpressions within pExpr and store the -** results in registers. Modify pExpr so that the constant subexpresions -** are TK_REGISTER opcodes that refer to the precomputed values. -** -** This routine is a no-op if the jump to the cookie-check code has -** already occur. Since the cookie-check jump is generated prior to -** any other serious processing, this check ensures that there is no -** way to accidently bypass the constant initializations. -** -** This routine is also a no-op if the SQLITE_FactorOutConst optimization -** is disabled via the sqlite3_test_control(SQLITE_TESTCTRL_OPTIMIZATIONS) -** interface. This allows test logic to verify that the same answer is -** obtained for queries regardless of whether or not constants are -** precomputed into registers or if they are inserted in-line. -*/ -void sqlite3ExprCodeConstants(Parse *pParse, Expr *pExpr){ - Walker w; - if( pParse->cookieGoto ) return; - if( (pParse->db->flags & SQLITE_FactorOutConst)!=0 ) return; - w.xExprCallback = evalConstExpr; - w.xSelectCallback = 0; - w.pParse = pParse; - sqlite3WalkExpr(&w, pExpr); -} - - -/* -** Generate code that pushes the value of every element of the given -** expression list into a sequence of registers beginning at target. -** -** Return the number of elements evaluated. -*/ -int sqlite3ExprCodeExprList( - Parse *pParse, /* Parsing context */ - ExprList *pList, /* The expression list to be coded */ - int target, /* Where to write results */ - int doHardCopy /* Make a hard copy of every element */ -){ - struct ExprList_item *pItem; - int i, n; - assert( pList!=0 ); - assert( target>0 ); - assert( pParse->pVdbe!=0 ); /* Never gets this far otherwise */ - n = pList->nExpr; - for(pItem=pList->a, i=0; ipExpr; - int inReg = sqlite3ExprCodeTarget(pParse, pExpr, target+i); - if( inReg!=target+i ){ - sqlite3VdbeAddOp2(pParse->pVdbe, doHardCopy ? OP_Copy : OP_SCopy, - inReg, target+i); - } - } - return n; -} - -/* -** Generate code for a BETWEEN operator. -** -** x BETWEEN y AND z -** -** The above is equivalent to -** -** x>=y AND x<=z -** -** Code it as such, taking care to do the common subexpression -** elementation of x. -*/ -static void exprCodeBetween( - Parse *pParse, /* Parsing and code generating context */ - Expr *pExpr, /* The BETWEEN expression */ - int dest, /* Jump here if the jump is taken */ - int jumpIfTrue, /* Take the jump if the BETWEEN is true */ - int jumpIfNull /* Take the jump if the BETWEEN is NULL */ -){ - Expr exprAnd; /* The AND operator in x>=y AND x<=z */ - Expr compLeft; /* The x>=y term */ - Expr compRight; /* The x<=z term */ - Expr exprX; /* The x subexpression */ - int regFree1 = 0; /* Temporary use register */ - - assert( !ExprHasProperty(pExpr, EP_xIsSelect) ); - exprX = *pExpr->pLeft; - exprAnd.op = TK_AND; - exprAnd.pLeft = &compLeft; - exprAnd.pRight = &compRight; - compLeft.op = TK_GE; - compLeft.pLeft = &exprX; - compLeft.pRight = pExpr->x.pList->a[0].pExpr; - compRight.op = TK_LE; - compRight.pLeft = &exprX; - compRight.pRight = pExpr->x.pList->a[1].pExpr; - exprX.iTable = sqlite3ExprCodeTemp(pParse, &exprX, ®Free1); - exprX.op = TK_REGISTER; - if( jumpIfTrue ){ - sqlite3ExprIfTrue(pParse, &exprAnd, dest, jumpIfNull); - }else{ - sqlite3ExprIfFalse(pParse, &exprAnd, dest, jumpIfNull); - } - sqlite3ReleaseTempReg(pParse, regFree1); - - /* Ensure adequate test coverage */ - testcase( jumpIfTrue==0 && jumpIfNull==0 && regFree1==0 ); - testcase( jumpIfTrue==0 && jumpIfNull==0 && regFree1!=0 ); - testcase( jumpIfTrue==0 && jumpIfNull!=0 && regFree1==0 ); - testcase( jumpIfTrue==0 && jumpIfNull!=0 && regFree1!=0 ); - testcase( jumpIfTrue!=0 && jumpIfNull==0 && regFree1==0 ); - testcase( jumpIfTrue!=0 && jumpIfNull==0 && regFree1!=0 ); - testcase( jumpIfTrue!=0 && jumpIfNull!=0 && regFree1==0 ); - testcase( jumpIfTrue!=0 && jumpIfNull!=0 && regFree1!=0 ); -} - -/* -** Generate code for a boolean expression such that a jump is made -** to the label "dest" if the expression is true but execution -** continues straight thru if the expression is false. -** -** If the expression evaluates to NULL (neither true nor false), then -** take the jump if the jumpIfNull flag is SQLITE_JUMPIFNULL. -** -** This code depends on the fact that certain token values (ex: TK_EQ) -** are the same as opcode values (ex: OP_Eq) that implement the corresponding -** operation. Special comments in vdbe.c and the mkopcodeh.awk script in -** the make process cause these values to align. Assert()s in the code -** below verify that the numbers are aligned correctly. -*/ -void sqlite3ExprIfTrue(Parse *pParse, Expr *pExpr, int dest, int jumpIfNull){ - Vdbe *v = pParse->pVdbe; - int op = 0; - int regFree1 = 0; - int regFree2 = 0; - int r1, r2; - - assert( jumpIfNull==SQLITE_JUMPIFNULL || jumpIfNull==0 ); - if( NEVER(v==0) ) return; /* Existance of VDBE checked by caller */ - if( NEVER(pExpr==0) ) return; /* No way this can happen */ - op = pExpr->op; - switch( op ){ - case TK_AND: { - int d2 = sqlite3VdbeMakeLabel(v); - testcase( jumpIfNull==0 ); - sqlite3ExprCachePush(pParse); - sqlite3ExprIfFalse(pParse, pExpr->pLeft, d2,jumpIfNull^SQLITE_JUMPIFNULL); - sqlite3ExprIfTrue(pParse, pExpr->pRight, dest, jumpIfNull); - sqlite3VdbeResolveLabel(v, d2); - sqlite3ExprCachePop(pParse, 1); - break; - } - case TK_OR: { - testcase( jumpIfNull==0 ); - sqlite3ExprIfTrue(pParse, pExpr->pLeft, dest, jumpIfNull); - sqlite3ExprIfTrue(pParse, pExpr->pRight, dest, jumpIfNull); - break; - } - case TK_NOT: { - testcase( jumpIfNull==0 ); - sqlite3ExprIfFalse(pParse, pExpr->pLeft, dest, jumpIfNull); - break; - } - case TK_LT: - case TK_LE: - case TK_GT: - case TK_GE: - case TK_NE: - case TK_EQ: { - assert( TK_LT==OP_Lt ); - assert( TK_LE==OP_Le ); - assert( TK_GT==OP_Gt ); - assert( TK_GE==OP_Ge ); - assert( TK_EQ==OP_Eq ); - assert( TK_NE==OP_Ne ); - testcase( op==TK_LT ); - testcase( op==TK_LE ); - testcase( op==TK_GT ); - testcase( op==TK_GE ); - testcase( op==TK_EQ ); - testcase( op==TK_NE ); - testcase( jumpIfNull==0 ); - r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free1); - r2 = sqlite3ExprCodeTemp(pParse, pExpr->pRight, ®Free2); - codeCompare(pParse, pExpr->pLeft, pExpr->pRight, op, - r1, r2, dest, jumpIfNull); - testcase( regFree1==0 ); - testcase( regFree2==0 ); - break; - } - case TK_IS: - case TK_ISNOT: { - testcase( op==TK_IS ); - testcase( op==TK_ISNOT ); - r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free1); - r2 = sqlite3ExprCodeTemp(pParse, pExpr->pRight, ®Free2); - op = (op==TK_IS) ? TK_EQ : TK_NE; - codeCompare(pParse, pExpr->pLeft, pExpr->pRight, op, - r1, r2, dest, SQLITE_NULLEQ); - testcase( regFree1==0 ); - testcase( regFree2==0 ); - break; - } - case TK_ISNULL: - case TK_NOTNULL: { - assert( TK_ISNULL==OP_IsNull ); - assert( TK_NOTNULL==OP_NotNull ); - testcase( op==TK_ISNULL ); - testcase( op==TK_NOTNULL ); - r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free1); - sqlite3VdbeAddOp2(v, op, r1, dest); - testcase( regFree1==0 ); - break; - } - case TK_BETWEEN: { - testcase( jumpIfNull==0 ); - exprCodeBetween(pParse, pExpr, dest, 1, jumpIfNull); - break; - } -#ifndef SQLITE_OMIT_SUBQUERY - case TK_IN: { - int destIfFalse = sqlite3VdbeMakeLabel(v); - int destIfNull = jumpIfNull ? dest : destIfFalse; - sqlite3ExprCodeIN(pParse, pExpr, destIfFalse, destIfNull); - sqlite3VdbeAddOp2(v, OP_Goto, 0, dest); - sqlite3VdbeResolveLabel(v, destIfFalse); - break; - } -#endif - default: { - r1 = sqlite3ExprCodeTemp(pParse, pExpr, ®Free1); - sqlite3VdbeAddOp3(v, OP_If, r1, dest, jumpIfNull!=0); - testcase( regFree1==0 ); - testcase( jumpIfNull==0 ); - break; - } - } - sqlite3ReleaseTempReg(pParse, regFree1); - sqlite3ReleaseTempReg(pParse, regFree2); -} - -/* -** Generate code for a boolean expression such that a jump is made -** to the label "dest" if the expression is false but execution -** continues straight thru if the expression is true. -** -** If the expression evaluates to NULL (neither true nor false) then -** jump if jumpIfNull is SQLITE_JUMPIFNULL or fall through if jumpIfNull -** is 0. -*/ -void sqlite3ExprIfFalse(Parse *pParse, Expr *pExpr, int dest, int jumpIfNull){ - Vdbe *v = pParse->pVdbe; - int op = 0; - int regFree1 = 0; - int regFree2 = 0; - int r1, r2; - - assert( jumpIfNull==SQLITE_JUMPIFNULL || jumpIfNull==0 ); - if( NEVER(v==0) ) return; /* Existance of VDBE checked by caller */ - if( pExpr==0 ) return; - - /* The value of pExpr->op and op are related as follows: - ** - ** pExpr->op op - ** --------- ---------- - ** TK_ISNULL OP_NotNull - ** TK_NOTNULL OP_IsNull - ** TK_NE OP_Eq - ** TK_EQ OP_Ne - ** TK_GT OP_Le - ** TK_LE OP_Gt - ** TK_GE OP_Lt - ** TK_LT OP_Ge - ** - ** For other values of pExpr->op, op is undefined and unused. - ** The value of TK_ and OP_ constants are arranged such that we - ** can compute the mapping above using the following expression. - ** Assert()s verify that the computation is correct. - */ - op = ((pExpr->op+(TK_ISNULL&1))^1)-(TK_ISNULL&1); - - /* Verify correct alignment of TK_ and OP_ constants - */ - assert( pExpr->op!=TK_ISNULL || op==OP_NotNull ); - assert( pExpr->op!=TK_NOTNULL || op==OP_IsNull ); - assert( pExpr->op!=TK_NE || op==OP_Eq ); - assert( pExpr->op!=TK_EQ || op==OP_Ne ); - assert( pExpr->op!=TK_LT || op==OP_Ge ); - assert( pExpr->op!=TK_LE || op==OP_Gt ); - assert( pExpr->op!=TK_GT || op==OP_Le ); - assert( pExpr->op!=TK_GE || op==OP_Lt ); - - switch( pExpr->op ){ - case TK_AND: { - testcase( jumpIfNull==0 ); - sqlite3ExprIfFalse(pParse, pExpr->pLeft, dest, jumpIfNull); - sqlite3ExprIfFalse(pParse, pExpr->pRight, dest, jumpIfNull); - break; - } - case TK_OR: { - int d2 = sqlite3VdbeMakeLabel(v); - testcase( jumpIfNull==0 ); - sqlite3ExprCachePush(pParse); - sqlite3ExprIfTrue(pParse, pExpr->pLeft, d2, jumpIfNull^SQLITE_JUMPIFNULL); - sqlite3ExprIfFalse(pParse, pExpr->pRight, dest, jumpIfNull); - sqlite3VdbeResolveLabel(v, d2); - sqlite3ExprCachePop(pParse, 1); - break; - } - case TK_NOT: { - testcase( jumpIfNull==0 ); - sqlite3ExprIfTrue(pParse, pExpr->pLeft, dest, jumpIfNull); - break; - } - case TK_LT: - case TK_LE: - case TK_GT: - case TK_GE: - case TK_NE: - case TK_EQ: { - testcase( op==TK_LT ); - testcase( op==TK_LE ); - testcase( op==TK_GT ); - testcase( op==TK_GE ); - testcase( op==TK_EQ ); - testcase( op==TK_NE ); - testcase( jumpIfNull==0 ); - r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free1); - r2 = sqlite3ExprCodeTemp(pParse, pExpr->pRight, ®Free2); - codeCompare(pParse, pExpr->pLeft, pExpr->pRight, op, - r1, r2, dest, jumpIfNull); - testcase( regFree1==0 ); - testcase( regFree2==0 ); - break; - } - case TK_IS: - case TK_ISNOT: { - testcase( pExpr->op==TK_IS ); - testcase( pExpr->op==TK_ISNOT ); - r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free1); - r2 = sqlite3ExprCodeTemp(pParse, pExpr->pRight, ®Free2); - op = (pExpr->op==TK_IS) ? TK_NE : TK_EQ; - codeCompare(pParse, pExpr->pLeft, pExpr->pRight, op, - r1, r2, dest, SQLITE_NULLEQ); - testcase( regFree1==0 ); - testcase( regFree2==0 ); - break; - } - case TK_ISNULL: - case TK_NOTNULL: { - testcase( op==TK_ISNULL ); - testcase( op==TK_NOTNULL ); - r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, ®Free1); - sqlite3VdbeAddOp2(v, op, r1, dest); - testcase( regFree1==0 ); - break; - } - case TK_BETWEEN: { - testcase( jumpIfNull==0 ); - exprCodeBetween(pParse, pExpr, dest, 0, jumpIfNull); - break; - } -#ifndef SQLITE_OMIT_SUBQUERY - case TK_IN: { - if( jumpIfNull ){ - sqlite3ExprCodeIN(pParse, pExpr, dest, dest); - }else{ - int destIfNull = sqlite3VdbeMakeLabel(v); - sqlite3ExprCodeIN(pParse, pExpr, dest, destIfNull); - sqlite3VdbeResolveLabel(v, destIfNull); - } - break; - } -#endif - default: { - r1 = sqlite3ExprCodeTemp(pParse, pExpr, ®Free1); - sqlite3VdbeAddOp3(v, OP_IfNot, r1, dest, jumpIfNull!=0); - testcase( regFree1==0 ); - testcase( jumpIfNull==0 ); - break; - } - } - sqlite3ReleaseTempReg(pParse, regFree1); - sqlite3ReleaseTempReg(pParse, regFree2); -} - -/* -** Do a deep comparison of two expression trees. Return 0 if the two -** expressions are completely identical. Return 1 if they differ only -** by a COLLATE operator at the top level. Return 2 if there are differences -** other than the top-level COLLATE operator. -** -** Sometimes this routine will return 2 even if the two expressions -** really are equivalent. If we cannot prove that the expressions are -** identical, we return 2 just to be safe. So if this routine -** returns 2, then you do not really know for certain if the two -** expressions are the same. But if you get a 0 or 1 return, then you -** can be sure the expressions are the same. In the places where -** this routine is used, it does not hurt to get an extra 2 - that -** just might result in some slightly slower code. But returning -** an incorrect 0 or 1 could lead to a malfunction. -*/ -int sqlite3ExprCompare(Expr *pA, Expr *pB){ - if( pA==0||pB==0 ){ - return pB==pA ? 0 : 2; - } - assert( !ExprHasAnyProperty(pA, EP_TokenOnly|EP_Reduced) ); - assert( !ExprHasAnyProperty(pB, EP_TokenOnly|EP_Reduced) ); - if( ExprHasProperty(pA, EP_xIsSelect) || ExprHasProperty(pB, EP_xIsSelect) ){ - return 2; - } - if( (pA->flags & EP_Distinct)!=(pB->flags & EP_Distinct) ) return 2; - if( pA->op!=pB->op ) return 2; - if( sqlite3ExprCompare(pA->pLeft, pB->pLeft) ) return 2; - if( sqlite3ExprCompare(pA->pRight, pB->pRight) ) return 2; - if( sqlite3ExprListCompare(pA->x.pList, pB->x.pList) ) return 2; - if( pA->iTable!=pB->iTable || pA->iColumn!=pB->iColumn ) return 2; - if( ExprHasProperty(pA, EP_IntValue) ){ - if( !ExprHasProperty(pB, EP_IntValue) || pA->u.iValue!=pB->u.iValue ){ - return 2; - } - }else if( pA->op!=TK_COLUMN && pA->u.zToken ){ - if( ExprHasProperty(pB, EP_IntValue) || NEVER(pB->u.zToken==0) ) return 2; - if( strcmp(pA->u.zToken,pB->u.zToken)!=0 ){ - return 2; - } - } - if( (pA->flags & EP_ExpCollate)!=(pB->flags & EP_ExpCollate) ) return 1; - if( (pA->flags & EP_ExpCollate)!=0 && pA->pColl!=pB->pColl ) return 2; - return 0; -} - -/* -** Compare two ExprList objects. Return 0 if they are identical and -** non-zero if they differ in any way. -** -** This routine might return non-zero for equivalent ExprLists. The -** only consequence will be disabled optimizations. But this routine -** must never return 0 if the two ExprList objects are different, or -** a malfunction will result. -** -** Two NULL pointers are considered to be the same. But a NULL pointer -** always differs from a non-NULL pointer. -*/ -int sqlite3ExprListCompare(ExprList *pA, ExprList *pB){ - int i; - if( pA==0 && pB==0 ) return 0; - if( pA==0 || pB==0 ) return 1; - if( pA->nExpr!=pB->nExpr ) return 1; - for(i=0; inExpr; i++){ - Expr *pExprA = pA->a[i].pExpr; - Expr *pExprB = pB->a[i].pExpr; - if( pA->a[i].sortOrder!=pB->a[i].sortOrder ) return 1; - if( sqlite3ExprCompare(pExprA, pExprB) ) return 1; - } - return 0; -} - -/* -** Add a new element to the pAggInfo->aCol[] array. Return the index of -** the new element. Return a negative number if malloc fails. -*/ -static int addAggInfoColumn(sqlite3 *db, AggInfo *pInfo){ - int i; - pInfo->aCol = sqlite3ArrayAllocate( - db, - pInfo->aCol, - sizeof(pInfo->aCol[0]), - 3, - &pInfo->nColumn, - &pInfo->nColumnAlloc, - &i - ); - return i; -} - -/* -** Add a new element to the pAggInfo->aFunc[] array. Return the index of -** the new element. Return a negative number if malloc fails. -*/ -static int addAggInfoFunc(sqlite3 *db, AggInfo *pInfo){ - int i; - pInfo->aFunc = sqlite3ArrayAllocate( - db, - pInfo->aFunc, - sizeof(pInfo->aFunc[0]), - 3, - &pInfo->nFunc, - &pInfo->nFuncAlloc, - &i - ); - return i; -} - -/* -** This is the xExprCallback for a tree walker. It is used to -** implement sqlite3ExprAnalyzeAggregates(). See sqlite3ExprAnalyzeAggregates -** for additional information. -*/ -static int analyzeAggregate(Walker *pWalker, Expr *pExpr){ - int i; - NameContext *pNC = pWalker->u.pNC; - Parse *pParse = pNC->pParse; - SrcList *pSrcList = pNC->pSrcList; - AggInfo *pAggInfo = pNC->pAggInfo; - - switch( pExpr->op ){ - case TK_AGG_COLUMN: - case TK_COLUMN: { - testcase( pExpr->op==TK_AGG_COLUMN ); - testcase( pExpr->op==TK_COLUMN ); - /* Check to see if the column is in one of the tables in the FROM - ** clause of the aggregate query */ - if( ALWAYS(pSrcList!=0) ){ - struct SrcList_item *pItem = pSrcList->a; - for(i=0; inSrc; i++, pItem++){ - struct AggInfo_col *pCol; - assert( !ExprHasAnyProperty(pExpr, EP_TokenOnly|EP_Reduced) ); - if( pExpr->iTable==pItem->iCursor ){ - /* If we reach this point, it means that pExpr refers to a table - ** that is in the FROM clause of the aggregate query. - ** - ** Make an entry for the column in pAggInfo->aCol[] if there - ** is not an entry there already. - */ - int k; - pCol = pAggInfo->aCol; - for(k=0; knColumn; k++, pCol++){ - if( pCol->iTable==pExpr->iTable && - pCol->iColumn==pExpr->iColumn ){ - break; - } - } - if( (k>=pAggInfo->nColumn) - && (k = addAggInfoColumn(pParse->db, pAggInfo))>=0 - ){ - pCol = &pAggInfo->aCol[k]; - pCol->pTab = pExpr->pTab; - pCol->iTable = pExpr->iTable; - pCol->iColumn = pExpr->iColumn; - pCol->iMem = ++pParse->nMem; - pCol->iSorterColumn = -1; - pCol->pExpr = pExpr; - if( pAggInfo->pGroupBy ){ - int j, n; - ExprList *pGB = pAggInfo->pGroupBy; - struct ExprList_item *pTerm = pGB->a; - n = pGB->nExpr; - for(j=0; jpExpr; - if( pE->op==TK_COLUMN && pE->iTable==pExpr->iTable && - pE->iColumn==pExpr->iColumn ){ - pCol->iSorterColumn = j; - break; - } - } - } - if( pCol->iSorterColumn<0 ){ - pCol->iSorterColumn = pAggInfo->nSortingColumn++; - } - } - /* There is now an entry for pExpr in pAggInfo->aCol[] (either - ** because it was there before or because we just created it). - ** Convert the pExpr to be a TK_AGG_COLUMN referring to that - ** pAggInfo->aCol[] entry. - */ - ExprSetIrreducible(pExpr); - pExpr->pAggInfo = pAggInfo; - pExpr->op = TK_AGG_COLUMN; - pExpr->iAgg = (i16)k; - break; - } /* endif pExpr->iTable==pItem->iCursor */ - } /* end loop over pSrcList */ - } - return WRC_Prune; - } - case TK_AGG_FUNCTION: { - /* The pNC->nDepth==0 test causes aggregate functions in subqueries - ** to be ignored */ - if( pNC->nDepth==0 ){ - /* Check to see if pExpr is a duplicate of another aggregate - ** function that is already in the pAggInfo structure - */ - struct AggInfo_func *pItem = pAggInfo->aFunc; - for(i=0; inFunc; i++, pItem++){ - if( sqlite3ExprCompare(pItem->pExpr, pExpr)==0 ){ - break; - } - } - if( i>=pAggInfo->nFunc ){ - /* pExpr is original. Make a new entry in pAggInfo->aFunc[] - */ - u8 enc = ENC(pParse->db); - i = addAggInfoFunc(pParse->db, pAggInfo); - if( i>=0 ){ - assert( !ExprHasProperty(pExpr, EP_xIsSelect) ); - pItem = &pAggInfo->aFunc[i]; - pItem->pExpr = pExpr; - pItem->iMem = ++pParse->nMem; - assert( !ExprHasProperty(pExpr, EP_IntValue) ); - pItem->pFunc = sqlite3FindFunction(pParse->db, - pExpr->u.zToken, sqlite3Strlen30(pExpr->u.zToken), - pExpr->x.pList ? pExpr->x.pList->nExpr : 0, enc, 0); - if( pExpr->flags & EP_Distinct ){ - pItem->iDistinct = pParse->nTab++; - }else{ - pItem->iDistinct = -1; - } - } - } - /* Make pExpr point to the appropriate pAggInfo->aFunc[] entry - */ - assert( !ExprHasAnyProperty(pExpr, EP_TokenOnly|EP_Reduced) ); - ExprSetIrreducible(pExpr); - pExpr->iAgg = (i16)i; - pExpr->pAggInfo = pAggInfo; - return WRC_Prune; - } - } - } - return WRC_Continue; -} -static int analyzeAggregatesInSelect(Walker *pWalker, Select *pSelect){ - NameContext *pNC = pWalker->u.pNC; - if( pNC->nDepth==0 ){ - pNC->nDepth++; - sqlite3WalkSelect(pWalker, pSelect); - pNC->nDepth--; - return WRC_Prune; - }else{ - return WRC_Continue; - } -} - -/* -** Analyze the given expression looking for aggregate functions and -** for variables that need to be added to the pParse->aAgg[] array. -** Make additional entries to the pParse->aAgg[] array as necessary. -** -** This routine should only be called after the expression has been -** analyzed by sqlite3ResolveExprNames(). -*/ -void sqlite3ExprAnalyzeAggregates(NameContext *pNC, Expr *pExpr){ - Walker w; - w.xExprCallback = analyzeAggregate; - w.xSelectCallback = analyzeAggregatesInSelect; - w.u.pNC = pNC; - assert( pNC->pSrcList!=0 ); - sqlite3WalkExpr(&w, pExpr); -} - -/* -** Call sqlite3ExprAnalyzeAggregates() for every expression in an -** expression list. Return the number of errors. -** -** If an error is found, the analysis is cut short. -*/ -void sqlite3ExprAnalyzeAggList(NameContext *pNC, ExprList *pList){ - struct ExprList_item *pItem; - int i; - if( pList ){ - for(pItem=pList->a, i=0; inExpr; i++, pItem++){ - sqlite3ExprAnalyzeAggregates(pNC, pItem->pExpr); - } - } -} - -/* -** Allocate a single new register for use to hold some intermediate result. -*/ -int sqlite3GetTempReg(Parse *pParse){ - if( pParse->nTempReg==0 ){ - return ++pParse->nMem; - } - return pParse->aTempReg[--pParse->nTempReg]; -} - -/* -** Deallocate a register, making available for reuse for some other -** purpose. -** -** If a register is currently being used by the column cache, then -** the dallocation is deferred until the column cache line that uses -** the register becomes stale. -*/ -void sqlite3ReleaseTempReg(Parse *pParse, int iReg){ - if( iReg && pParse->nTempRegaTempReg) ){ - int i; - struct yColCache *p; - for(i=0, p=pParse->aColCache; iiReg==iReg ){ - p->tempReg = 1; - return; - } - } - pParse->aTempReg[pParse->nTempReg++] = iReg; - } -} - -/* -** Allocate or deallocate a block of nReg consecutive registers -*/ -int sqlite3GetTempRange(Parse *pParse, int nReg){ - int i, n; - i = pParse->iRangeReg; - n = pParse->nRangeReg; - if( nReg<=n ){ - assert( !usedAsColumnCache(pParse, i, i+n-1) ); - pParse->iRangeReg += nReg; - pParse->nRangeReg -= nReg; - }else{ - i = pParse->nMem+1; - pParse->nMem += nReg; - } - return i; -} -void sqlite3ReleaseTempRange(Parse *pParse, int iReg, int nReg){ - sqlite3ExprCacheRemove(pParse, iReg, nReg); - if( nReg>pParse->nRangeReg ){ - pParse->nRangeReg = nReg; - pParse->iRangeReg = iReg; - } -} diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/fault.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/fault.c deleted file mode 100644 index 6dccaa3cff..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/fault.c +++ /dev/null @@ -1,87 +0,0 @@ -/* -** 2008 Jan 22 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** -** This file contains code to support the concept of "benign" -** malloc failures (when the xMalloc() or xRealloc() method of the -** sqlite3_mem_methods structure fails to allocate a block of memory -** and returns 0). -** -** Most malloc failures are non-benign. After they occur, SQLite -** abandons the current operation and returns an error code (usually -** SQLITE_NOMEM) to the user. However, sometimes a fault is not necessarily -** fatal. For example, if a malloc fails while resizing a hash table, this -** is completely recoverable simply by not carrying out the resize. The -** hash table will continue to function normally. So a malloc failure -** during a hash table resize is a benign fault. -*/ - -#include "sqliteInt.h" - -#ifndef SQLITE_OMIT_BUILTIN_TEST - -/* -** Global variables. -*/ -typedef struct BenignMallocHooks BenignMallocHooks; -static SQLITE_WSD struct BenignMallocHooks { - void (*xBenignBegin)(void); - void (*xBenignEnd)(void); -} sqlite3Hooks = { 0, 0 }; - -/* The "wsdHooks" macro will resolve to the appropriate BenignMallocHooks -** structure. If writable static data is unsupported on the target, -** we have to locate the state vector at run-time. In the more common -** case where writable static data is supported, wsdHooks can refer directly -** to the "sqlite3Hooks" state vector declared above. -*/ -#ifdef SQLITE_OMIT_WSD -# define wsdHooksInit \ - BenignMallocHooks *x = &GLOBAL(BenignMallocHooks,sqlite3Hooks) -# define wsdHooks x[0] -#else -# define wsdHooksInit -# define wsdHooks sqlite3Hooks -#endif - - -/* -** Register hooks to call when sqlite3BeginBenignMalloc() and -** sqlite3EndBenignMalloc() are called, respectively. -*/ -void sqlite3BenignMallocHooks( - void (*xBenignBegin)(void), - void (*xBenignEnd)(void) -){ - wsdHooksInit; - wsdHooks.xBenignBegin = xBenignBegin; - wsdHooks.xBenignEnd = xBenignEnd; -} - -/* -** This (sqlite3EndBenignMalloc()) is called by SQLite code to indicate that -** subsequent malloc failures are benign. A call to sqlite3EndBenignMalloc() -** indicates that subsequent malloc failures are non-benign. -*/ -void sqlite3BeginBenignMalloc(void){ - wsdHooksInit; - if( wsdHooks.xBenignBegin ){ - wsdHooks.xBenignBegin(); - } -} -void sqlite3EndBenignMalloc(void){ - wsdHooksInit; - if( wsdHooks.xBenignEnd ){ - wsdHooks.xBenignEnd(); - } -} - -#endif /* #ifndef SQLITE_OMIT_BUILTIN_TEST */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/fkey.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/fkey.c deleted file mode 100644 index cf767b0b21..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/fkey.c +++ /dev/null @@ -1,1219 +0,0 @@ -/* -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file contains code used by the compiler to add foreign key -** support to compiled SQL statements. -*/ -#include "sqliteInt.h" - -#ifndef SQLITE_OMIT_FOREIGN_KEY -#ifndef SQLITE_OMIT_TRIGGER - -/* -** Deferred and Immediate FKs -** -------------------------- -** -** Foreign keys in SQLite come in two flavours: deferred and immediate. -** If an immediate foreign key constraint is violated, SQLITE_CONSTRAINT -** is returned and the current statement transaction rolled back. If a -** deferred foreign key constraint is violated, no action is taken -** immediately. However if the application attempts to commit the -** transaction before fixing the constraint violation, the attempt fails. -** -** Deferred constraints are implemented using a simple counter associated -** with the database handle. The counter is set to zero each time a -** database transaction is opened. Each time a statement is executed -** that causes a foreign key violation, the counter is incremented. Each -** time a statement is executed that removes an existing violation from -** the database, the counter is decremented. When the transaction is -** committed, the commit fails if the current value of the counter is -** greater than zero. This scheme has two big drawbacks: -** -** * When a commit fails due to a deferred foreign key constraint, -** there is no way to tell which foreign constraint is not satisfied, -** or which row it is not satisfied for. -** -** * If the database contains foreign key violations when the -** transaction is opened, this may cause the mechanism to malfunction. -** -** Despite these problems, this approach is adopted as it seems simpler -** than the alternatives. -** -** INSERT operations: -** -** I.1) For each FK for which the table is the child table, search -** the parent table for a match. If none is found increment the -** constraint counter. -** -** I.2) For each FK for which the table is the parent table, -** search the child table for rows that correspond to the new -** row in the parent table. Decrement the counter for each row -** found (as the constraint is now satisfied). -** -** DELETE operations: -** -** D.1) For each FK for which the table is the child table, -** search the parent table for a row that corresponds to the -** deleted row in the child table. If such a row is not found, -** decrement the counter. -** -** D.2) For each FK for which the table is the parent table, search -** the child table for rows that correspond to the deleted row -** in the parent table. For each found increment the counter. -** -** UPDATE operations: -** -** An UPDATE command requires that all 4 steps above are taken, but only -** for FK constraints for which the affected columns are actually -** modified (values must be compared at runtime). -** -** Note that I.1 and D.1 are very similar operations, as are I.2 and D.2. -** This simplifies the implementation a bit. -** -** For the purposes of immediate FK constraints, the OR REPLACE conflict -** resolution is considered to delete rows before the new row is inserted. -** If a delete caused by OR REPLACE violates an FK constraint, an exception -** is thrown, even if the FK constraint would be satisfied after the new -** row is inserted. -** -** Immediate constraints are usually handled similarly. The only difference -** is that the counter used is stored as part of each individual statement -** object (struct Vdbe). If, after the statement has run, its immediate -** constraint counter is greater than zero, it returns SQLITE_CONSTRAINT -** and the statement transaction is rolled back. An exception is an INSERT -** statement that inserts a single row only (no triggers). In this case, -** instead of using a counter, an exception is thrown immediately if the -** INSERT violates a foreign key constraint. This is necessary as such -** an INSERT does not open a statement transaction. -** -** TODO: How should dropping a table be handled? How should renaming a -** table be handled? -** -** -** Query API Notes -** --------------- -** -** Before coding an UPDATE or DELETE row operation, the code-generator -** for those two operations needs to know whether or not the operation -** requires any FK processing and, if so, which columns of the original -** row are required by the FK processing VDBE code (i.e. if FKs were -** implemented using triggers, which of the old.* columns would be -** accessed). No information is required by the code-generator before -** coding an INSERT operation. The functions used by the UPDATE/DELETE -** generation code to query for this information are: -** -** sqlite3FkRequired() - Test to see if FK processing is required. -** sqlite3FkOldmask() - Query for the set of required old.* columns. -** -** -** Externally accessible module functions -** -------------------------------------- -** -** sqlite3FkCheck() - Check for foreign key violations. -** sqlite3FkActions() - Code triggers for ON UPDATE/ON DELETE actions. -** sqlite3FkDelete() - Delete an FKey structure. -*/ - -/* -** VDBE Calling Convention -** ----------------------- -** -** Example: -** -** For the following INSERT statement: -** -** CREATE TABLE t1(a, b INTEGER PRIMARY KEY, c); -** INSERT INTO t1 VALUES(1, 2, 3.1); -** -** Register (x): 2 (type integer) -** Register (x+1): 1 (type integer) -** Register (x+2): NULL (type NULL) -** Register (x+3): 3.1 (type real) -*/ - -/* -** A foreign key constraint requires that the key columns in the parent -** table are collectively subject to a UNIQUE or PRIMARY KEY constraint. -** Given that pParent is the parent table for foreign key constraint pFKey, -** search the schema a unique index on the parent key columns. -** -** If successful, zero is returned. If the parent key is an INTEGER PRIMARY -** KEY column, then output variable *ppIdx is set to NULL. Otherwise, *ppIdx -** is set to point to the unique index. -** -** If the parent key consists of a single column (the foreign key constraint -** is not a composite foreign key), output variable *paiCol is set to NULL. -** Otherwise, it is set to point to an allocated array of size N, where -** N is the number of columns in the parent key. The first element of the -** array is the index of the child table column that is mapped by the FK -** constraint to the parent table column stored in the left-most column -** of index *ppIdx. The second element of the array is the index of the -** child table column that corresponds to the second left-most column of -** *ppIdx, and so on. -** -** If the required index cannot be found, either because: -** -** 1) The named parent key columns do not exist, or -** -** 2) The named parent key columns do exist, but are not subject to a -** UNIQUE or PRIMARY KEY constraint, or -** -** 3) No parent key columns were provided explicitly as part of the -** foreign key definition, and the parent table does not have a -** PRIMARY KEY, or -** -** 4) No parent key columns were provided explicitly as part of the -** foreign key definition, and the PRIMARY KEY of the parent table -** consists of a a different number of columns to the child key in -** the child table. -** -** then non-zero is returned, and a "foreign key mismatch" error loaded -** into pParse. If an OOM error occurs, non-zero is returned and the -** pParse->db->mallocFailed flag is set. -*/ -static int locateFkeyIndex( - Parse *pParse, /* Parse context to store any error in */ - Table *pParent, /* Parent table of FK constraint pFKey */ - FKey *pFKey, /* Foreign key to find index for */ - Index **ppIdx, /* OUT: Unique index on parent table */ - int **paiCol /* OUT: Map of index columns in pFKey */ -){ - Index *pIdx = 0; /* Value to return via *ppIdx */ - int *aiCol = 0; /* Value to return via *paiCol */ - int nCol = pFKey->nCol; /* Number of columns in parent key */ - char *zKey = pFKey->aCol[0].zCol; /* Name of left-most parent key column */ - - /* The caller is responsible for zeroing output parameters. */ - assert( ppIdx && *ppIdx==0 ); - assert( !paiCol || *paiCol==0 ); - assert( pParse ); - - /* If this is a non-composite (single column) foreign key, check if it - ** maps to the INTEGER PRIMARY KEY of table pParent. If so, leave *ppIdx - ** and *paiCol set to zero and return early. - ** - ** Otherwise, for a composite foreign key (more than one column), allocate - ** space for the aiCol array (returned via output parameter *paiCol). - ** Non-composite foreign keys do not require the aiCol array. - */ - if( nCol==1 ){ - /* The FK maps to the IPK if any of the following are true: - ** - ** 1) There is an INTEGER PRIMARY KEY column and the FK is implicitly - ** mapped to the primary key of table pParent, or - ** 2) The FK is explicitly mapped to a column declared as INTEGER - ** PRIMARY KEY. - */ - if( pParent->iPKey>=0 ){ - if( !zKey ) return 0; - if( !sqlite3StrICmp(pParent->aCol[pParent->iPKey].zName, zKey) ) return 0; - } - }else if( paiCol ){ - assert( nCol>1 ); - aiCol = (int *)sqlite3DbMallocRaw(pParse->db, nCol*sizeof(int)); - if( !aiCol ) return 1; - *paiCol = aiCol; - } - - for(pIdx=pParent->pIndex; pIdx; pIdx=pIdx->pNext){ - if( pIdx->nColumn==nCol && pIdx->onError!=OE_None ){ - /* pIdx is a UNIQUE index (or a PRIMARY KEY) and has the right number - ** of columns. If each indexed column corresponds to a foreign key - ** column of pFKey, then this index is a winner. */ - - if( zKey==0 ){ - /* If zKey is NULL, then this foreign key is implicitly mapped to - ** the PRIMARY KEY of table pParent. The PRIMARY KEY index may be - ** identified by the test (Index.autoIndex==2). */ - if( pIdx->autoIndex==2 ){ - if( aiCol ){ - int i; - for(i=0; iaCol[i].iFrom; - } - break; - } - }else{ - /* If zKey is non-NULL, then this foreign key was declared to - ** map to an explicit list of columns in table pParent. Check if this - ** index matches those columns. Also, check that the index uses - ** the default collation sequences for each column. */ - int i, j; - for(i=0; iaiColumn[i]; /* Index of column in parent tbl */ - char *zDfltColl; /* Def. collation for column */ - char *zIdxCol; /* Name of indexed column */ - - /* If the index uses a collation sequence that is different from - ** the default collation sequence for the column, this index is - ** unusable. Bail out early in this case. */ - zDfltColl = pParent->aCol[iCol].zColl; - if( !zDfltColl ){ - zDfltColl = "BINARY"; - } - if( sqlite3StrICmp(pIdx->azColl[i], zDfltColl) ) break; - - zIdxCol = pParent->aCol[iCol].zName; - for(j=0; jaCol[j].zCol, zIdxCol)==0 ){ - if( aiCol ) aiCol[i] = pFKey->aCol[j].iFrom; - break; - } - } - if( j==nCol ) break; - } - if( i==nCol ) break; /* pIdx is usable */ - } - } - } - - if( !pIdx ){ - if( !pParse->disableTriggers ){ - sqlite3ErrorMsg(pParse, "foreign key mismatch"); - } - sqlite3DbFree(pParse->db, aiCol); - return 1; - } - - *ppIdx = pIdx; - return 0; -} - -/* -** This function is called when a row is inserted into or deleted from the -** child table of foreign key constraint pFKey. If an SQL UPDATE is executed -** on the child table of pFKey, this function is invoked twice for each row -** affected - once to "delete" the old row, and then again to "insert" the -** new row. -** -** Each time it is called, this function generates VDBE code to locate the -** row in the parent table that corresponds to the row being inserted into -** or deleted from the child table. If the parent row can be found, no -** special action is taken. Otherwise, if the parent row can *not* be -** found in the parent table: -** -** Operation | FK type | Action taken -** -------------------------------------------------------------------------- -** INSERT immediate Increment the "immediate constraint counter". -** -** DELETE immediate Decrement the "immediate constraint counter". -** -** INSERT deferred Increment the "deferred constraint counter". -** -** DELETE deferred Decrement the "deferred constraint counter". -** -** These operations are identified in the comment at the top of this file -** (fkey.c) as "I.1" and "D.1". -*/ -static void fkLookupParent( - Parse *pParse, /* Parse context */ - int iDb, /* Index of database housing pTab */ - Table *pTab, /* Parent table of FK pFKey */ - Index *pIdx, /* Unique index on parent key columns in pTab */ - FKey *pFKey, /* Foreign key constraint */ - int *aiCol, /* Map from parent key columns to child table columns */ - int regData, /* Address of array containing child table row */ - int nIncr, /* Increment constraint counter by this */ - int isIgnore /* If true, pretend pTab contains all NULL values */ -){ - int i; /* Iterator variable */ - Vdbe *v = sqlite3GetVdbe(pParse); /* Vdbe to add code to */ - int iCur = pParse->nTab - 1; /* Cursor number to use */ - int iOk = sqlite3VdbeMakeLabel(v); /* jump here if parent key found */ - - /* If nIncr is less than zero, then check at runtime if there are any - ** outstanding constraints to resolve. If there are not, there is no need - ** to check if deleting this row resolves any outstanding violations. - ** - ** Check if any of the key columns in the child table row are NULL. If - ** any are, then the constraint is considered satisfied. No need to - ** search for a matching row in the parent table. */ - if( nIncr<0 ){ - sqlite3VdbeAddOp2(v, OP_FkIfZero, pFKey->isDeferred, iOk); - } - for(i=0; inCol; i++){ - int iReg = aiCol[i] + regData + 1; - sqlite3VdbeAddOp2(v, OP_IsNull, iReg, iOk); - } - - if( isIgnore==0 ){ - if( pIdx==0 ){ - /* If pIdx is NULL, then the parent key is the INTEGER PRIMARY KEY - ** column of the parent table (table pTab). */ - int iMustBeInt; /* Address of MustBeInt instruction */ - int regTemp = sqlite3GetTempReg(pParse); - - /* Invoke MustBeInt to coerce the child key value to an integer (i.e. - ** apply the affinity of the parent key). If this fails, then there - ** is no matching parent key. Before using MustBeInt, make a copy of - ** the value. Otherwise, the value inserted into the child key column - ** will have INTEGER affinity applied to it, which may not be correct. */ - sqlite3VdbeAddOp2(v, OP_SCopy, aiCol[0]+1+regData, regTemp); - iMustBeInt = sqlite3VdbeAddOp2(v, OP_MustBeInt, regTemp, 0); - - /* If the parent table is the same as the child table, and we are about - ** to increment the constraint-counter (i.e. this is an INSERT operation), - ** then check if the row being inserted matches itself. If so, do not - ** increment the constraint-counter. */ - if( pTab==pFKey->pFrom && nIncr==1 ){ - sqlite3VdbeAddOp3(v, OP_Eq, regData, iOk, regTemp); - } - - sqlite3OpenTable(pParse, iCur, iDb, pTab, OP_OpenRead); - sqlite3VdbeAddOp3(v, OP_NotExists, iCur, 0, regTemp); - sqlite3VdbeAddOp2(v, OP_Goto, 0, iOk); - sqlite3VdbeJumpHere(v, sqlite3VdbeCurrentAddr(v)-2); - sqlite3VdbeJumpHere(v, iMustBeInt); - sqlite3ReleaseTempReg(pParse, regTemp); - }else{ - int nCol = pFKey->nCol; - int regTemp = sqlite3GetTempRange(pParse, nCol); - int regRec = sqlite3GetTempReg(pParse); - KeyInfo *pKey = sqlite3IndexKeyinfo(pParse, pIdx); - - sqlite3VdbeAddOp3(v, OP_OpenRead, iCur, pIdx->tnum, iDb); - sqlite3VdbeChangeP4(v, -1, (char*)pKey, P4_KEYINFO_HANDOFF); - for(i=0; ipFrom && nIncr==1 ){ - int iJump = sqlite3VdbeCurrentAddr(v) + nCol + 1; - for(i=0; iaiColumn[i]+1+regData; - assert( aiCol[i]!=pTab->iPKey ); - if( pIdx->aiColumn[i]==pTab->iPKey ){ - /* The parent key is a composite key that includes the IPK column */ - iParent = regData; - } - sqlite3VdbeAddOp3(v, OP_Ne, iChild, iJump, iParent); - sqlite3VdbeChangeP5(v, SQLITE_JUMPIFNULL); - } - sqlite3VdbeAddOp2(v, OP_Goto, 0, iOk); - } - - sqlite3VdbeAddOp3(v, OP_MakeRecord, regTemp, nCol, regRec); - sqlite3VdbeChangeP4(v, -1, sqlite3IndexAffinityStr(v,pIdx), P4_TRANSIENT); - sqlite3VdbeAddOp4Int(v, OP_Found, iCur, iOk, regRec, 0); - - sqlite3ReleaseTempReg(pParse, regRec); - sqlite3ReleaseTempRange(pParse, regTemp, nCol); - } - } - - if( !pFKey->isDeferred && !pParse->pToplevel && !pParse->isMultiWrite ){ - /* Special case: If this is an INSERT statement that will insert exactly - ** one row into the table, raise a constraint immediately instead of - ** incrementing a counter. This is necessary as the VM code is being - ** generated for will not open a statement transaction. */ - assert( nIncr==1 ); - sqlite3HaltConstraint( - pParse, OE_Abort, "foreign key constraint failed", P4_STATIC - ); - }else{ - if( nIncr>0 && pFKey->isDeferred==0 ){ - sqlite3ParseToplevel(pParse)->mayAbort = 1; - } - sqlite3VdbeAddOp2(v, OP_FkCounter, pFKey->isDeferred, nIncr); - } - - sqlite3VdbeResolveLabel(v, iOk); - sqlite3VdbeAddOp1(v, OP_Close, iCur); -} - -/* -** This function is called to generate code executed when a row is deleted -** from the parent table of foreign key constraint pFKey and, if pFKey is -** deferred, when a row is inserted into the same table. When generating -** code for an SQL UPDATE operation, this function may be called twice - -** once to "delete" the old row and once to "insert" the new row. -** -** The code generated by this function scans through the rows in the child -** table that correspond to the parent table row being deleted or inserted. -** For each child row found, one of the following actions is taken: -** -** Operation | FK type | Action taken -** -------------------------------------------------------------------------- -** DELETE immediate Increment the "immediate constraint counter". -** Or, if the ON (UPDATE|DELETE) action is RESTRICT, -** throw a "foreign key constraint failed" exception. -** -** INSERT immediate Decrement the "immediate constraint counter". -** -** DELETE deferred Increment the "deferred constraint counter". -** Or, if the ON (UPDATE|DELETE) action is RESTRICT, -** throw a "foreign key constraint failed" exception. -** -** INSERT deferred Decrement the "deferred constraint counter". -** -** These operations are identified in the comment at the top of this file -** (fkey.c) as "I.2" and "D.2". -*/ -static void fkScanChildren( - Parse *pParse, /* Parse context */ - SrcList *pSrc, /* SrcList containing the table to scan */ - Table *pTab, - Index *pIdx, /* Foreign key index */ - FKey *pFKey, /* Foreign key relationship */ - int *aiCol, /* Map from pIdx cols to child table cols */ - int regData, /* Referenced table data starts here */ - int nIncr /* Amount to increment deferred counter by */ -){ - sqlite3 *db = pParse->db; /* Database handle */ - int i; /* Iterator variable */ - Expr *pWhere = 0; /* WHERE clause to scan with */ - NameContext sNameContext; /* Context used to resolve WHERE clause */ - WhereInfo *pWInfo; /* Context used by sqlite3WhereXXX() */ - int iFkIfZero = 0; /* Address of OP_FkIfZero */ - Vdbe *v = sqlite3GetVdbe(pParse); - - assert( !pIdx || pIdx->pTable==pTab ); - - if( nIncr<0 ){ - iFkIfZero = sqlite3VdbeAddOp2(v, OP_FkIfZero, pFKey->isDeferred, 0); - } - - /* Create an Expr object representing an SQL expression like: - ** - ** = AND = ... - ** - ** The collation sequence used for the comparison should be that of - ** the parent key columns. The affinity of the parent key column should - ** be applied to each child key value before the comparison takes place. - */ - for(i=0; inCol; i++){ - Expr *pLeft; /* Value from parent table row */ - Expr *pRight; /* Column ref to child table */ - Expr *pEq; /* Expression (pLeft = pRight) */ - int iCol; /* Index of column in child table */ - const char *zCol; /* Name of column in child table */ - - pLeft = sqlite3Expr(db, TK_REGISTER, 0); - if( pLeft ){ - /* Set the collation sequence and affinity of the LHS of each TK_EQ - ** expression to the parent key column defaults. */ - if( pIdx ){ - Column *pCol; - iCol = pIdx->aiColumn[i]; - pCol = &pTab->aCol[iCol]; - if( pTab->iPKey==iCol ) iCol = -1; - pLeft->iTable = regData+iCol+1; - pLeft->affinity = pCol->affinity; - pLeft->pColl = sqlite3LocateCollSeq(pParse, pCol->zColl); - }else{ - pLeft->iTable = regData; - pLeft->affinity = SQLITE_AFF_INTEGER; - } - } - iCol = aiCol ? aiCol[i] : pFKey->aCol[0].iFrom; - assert( iCol>=0 ); - zCol = pFKey->pFrom->aCol[iCol].zName; - pRight = sqlite3Expr(db, TK_ID, zCol); - pEq = sqlite3PExpr(pParse, TK_EQ, pLeft, pRight, 0); - pWhere = sqlite3ExprAnd(db, pWhere, pEq); - } - - /* If the child table is the same as the parent table, and this scan - ** is taking place as part of a DELETE operation (operation D.2), omit the - ** row being deleted from the scan by adding ($rowid != rowid) to the WHERE - ** clause, where $rowid is the rowid of the row being deleted. */ - if( pTab==pFKey->pFrom && nIncr>0 ){ - Expr *pEq; /* Expression (pLeft = pRight) */ - Expr *pLeft; /* Value from parent table row */ - Expr *pRight; /* Column ref to child table */ - pLeft = sqlite3Expr(db, TK_REGISTER, 0); - pRight = sqlite3Expr(db, TK_COLUMN, 0); - if( pLeft && pRight ){ - pLeft->iTable = regData; - pLeft->affinity = SQLITE_AFF_INTEGER; - pRight->iTable = pSrc->a[0].iCursor; - pRight->iColumn = -1; - } - pEq = sqlite3PExpr(pParse, TK_NE, pLeft, pRight, 0); - pWhere = sqlite3ExprAnd(db, pWhere, pEq); - } - - /* Resolve the references in the WHERE clause. */ - memset(&sNameContext, 0, sizeof(NameContext)); - sNameContext.pSrcList = pSrc; - sNameContext.pParse = pParse; - sqlite3ResolveExprNames(&sNameContext, pWhere); - - /* Create VDBE to loop through the entries in pSrc that match the WHERE - ** clause. If the constraint is not deferred, throw an exception for - ** each row found. Otherwise, for deferred constraints, increment the - ** deferred constraint counter by nIncr for each row selected. */ - pWInfo = sqlite3WhereBegin(pParse, pSrc, pWhere, 0, 0, 0); - if( nIncr>0 && pFKey->isDeferred==0 ){ - sqlite3ParseToplevel(pParse)->mayAbort = 1; - } - sqlite3VdbeAddOp2(v, OP_FkCounter, pFKey->isDeferred, nIncr); - if( pWInfo ){ - sqlite3WhereEnd(pWInfo); - } - - /* Clean up the WHERE clause constructed above. */ - sqlite3ExprDelete(db, pWhere); - if( iFkIfZero ){ - sqlite3VdbeJumpHere(v, iFkIfZero); - } -} - -/* -** This function returns a pointer to the head of a linked list of FK -** constraints for which table pTab is the parent table. For example, -** given the following schema: -** -** CREATE TABLE t1(a PRIMARY KEY); -** CREATE TABLE t2(b REFERENCES t1(a); -** -** Calling this function with table "t1" as an argument returns a pointer -** to the FKey structure representing the foreign key constraint on table -** "t2". Calling this function with "t2" as the argument would return a -** NULL pointer (as there are no FK constraints for which t2 is the parent -** table). -*/ -FKey *sqlite3FkReferences(Table *pTab){ - int nName = sqlite3Strlen30(pTab->zName); - return (FKey *)sqlite3HashFind(&pTab->pSchema->fkeyHash, pTab->zName, nName); -} - -/* -** The second argument is a Trigger structure allocated by the -** fkActionTrigger() routine. This function deletes the Trigger structure -** and all of its sub-components. -** -** The Trigger structure or any of its sub-components may be allocated from -** the lookaside buffer belonging to database handle dbMem. -*/ -static void fkTriggerDelete(sqlite3 *dbMem, Trigger *p){ - if( p ){ - TriggerStep *pStep = p->step_list; - sqlite3ExprDelete(dbMem, pStep->pWhere); - sqlite3ExprListDelete(dbMem, pStep->pExprList); - sqlite3SelectDelete(dbMem, pStep->pSelect); - sqlite3ExprDelete(dbMem, p->pWhen); - sqlite3DbFree(dbMem, p); - } -} - -/* -** This function is called to generate code that runs when table pTab is -** being dropped from the database. The SrcList passed as the second argument -** to this function contains a single entry guaranteed to resolve to -** table pTab. -** -** Normally, no code is required. However, if either -** -** (a) The table is the parent table of a FK constraint, or -** (b) The table is the child table of a deferred FK constraint and it is -** determined at runtime that there are outstanding deferred FK -** constraint violations in the database, -** -** then the equivalent of "DELETE FROM " is executed before dropping -** the table from the database. Triggers are disabled while running this -** DELETE, but foreign key actions are not. -*/ -void sqlite3FkDropTable(Parse *pParse, SrcList *pName, Table *pTab){ - sqlite3 *db = pParse->db; - if( (db->flags&SQLITE_ForeignKeys) && !IsVirtual(pTab) && !pTab->pSelect ){ - int iSkip = 0; - Vdbe *v = sqlite3GetVdbe(pParse); - - assert( v ); /* VDBE has already been allocated */ - if( sqlite3FkReferences(pTab)==0 ){ - /* Search for a deferred foreign key constraint for which this table - ** is the child table. If one cannot be found, return without - ** generating any VDBE code. If one can be found, then jump over - ** the entire DELETE if there are no outstanding deferred constraints - ** when this statement is run. */ - FKey *p; - for(p=pTab->pFKey; p; p=p->pNextFrom){ - if( p->isDeferred ) break; - } - if( !p ) return; - iSkip = sqlite3VdbeMakeLabel(v); - sqlite3VdbeAddOp2(v, OP_FkIfZero, 1, iSkip); - } - - pParse->disableTriggers = 1; - sqlite3DeleteFrom(pParse, sqlite3SrcListDup(db, pName, 0), 0); - pParse->disableTriggers = 0; - - /* If the DELETE has generated immediate foreign key constraint - ** violations, halt the VDBE and return an error at this point, before - ** any modifications to the schema are made. This is because statement - ** transactions are not able to rollback schema changes. */ - sqlite3VdbeAddOp2(v, OP_FkIfZero, 0, sqlite3VdbeCurrentAddr(v)+2); - sqlite3HaltConstraint( - pParse, OE_Abort, "foreign key constraint failed", P4_STATIC - ); - - if( iSkip ){ - sqlite3VdbeResolveLabel(v, iSkip); - } - } -} - -/* -** This function is called when inserting, deleting or updating a row of -** table pTab to generate VDBE code to perform foreign key constraint -** processing for the operation. -** -** For a DELETE operation, parameter regOld is passed the index of the -** first register in an array of (pTab->nCol+1) registers containing the -** rowid of the row being deleted, followed by each of the column values -** of the row being deleted, from left to right. Parameter regNew is passed -** zero in this case. -** -** For an INSERT operation, regOld is passed zero and regNew is passed the -** first register of an array of (pTab->nCol+1) registers containing the new -** row data. -** -** For an UPDATE operation, this function is called twice. Once before -** the original record is deleted from the table using the calling convention -** described for DELETE. Then again after the original record is deleted -** but before the new record is inserted using the INSERT convention. -*/ -void sqlite3FkCheck( - Parse *pParse, /* Parse context */ - Table *pTab, /* Row is being deleted from this table */ - int regOld, /* Previous row data is stored here */ - int regNew /* New row data is stored here */ -){ - sqlite3 *db = pParse->db; /* Database handle */ - FKey *pFKey; /* Used to iterate through FKs */ - int iDb; /* Index of database containing pTab */ - const char *zDb; /* Name of database containing pTab */ - int isIgnoreErrors = pParse->disableTriggers; - - /* Exactly one of regOld and regNew should be non-zero. */ - assert( (regOld==0)!=(regNew==0) ); - - /* If foreign-keys are disabled, this function is a no-op. */ - if( (db->flags&SQLITE_ForeignKeys)==0 ) return; - - iDb = sqlite3SchemaToIndex(db, pTab->pSchema); - zDb = db->aDb[iDb].zName; - - /* Loop through all the foreign key constraints for which pTab is the - ** child table (the table that the foreign key definition is part of). */ - for(pFKey=pTab->pFKey; pFKey; pFKey=pFKey->pNextFrom){ - Table *pTo; /* Parent table of foreign key pFKey */ - Index *pIdx = 0; /* Index on key columns in pTo */ - int *aiFree = 0; - int *aiCol; - int iCol; - int i; - int isIgnore = 0; - - /* Find the parent table of this foreign key. Also find a unique index - ** on the parent key columns in the parent table. If either of these - ** schema items cannot be located, set an error in pParse and return - ** early. */ - if( pParse->disableTriggers ){ - pTo = sqlite3FindTable(db, pFKey->zTo, zDb); - }else{ - pTo = sqlite3LocateTable(pParse, 0, pFKey->zTo, zDb); - } - if( !pTo || locateFkeyIndex(pParse, pTo, pFKey, &pIdx, &aiFree) ){ - assert( isIgnoreErrors==0 || (regOld!=0 && regNew==0) ); - if( !isIgnoreErrors || db->mallocFailed ) return; - if( pTo==0 ){ - /* If isIgnoreErrors is true, then a table is being dropped. In this - ** case SQLite runs a "DELETE FROM xxx" on the table being dropped - ** before actually dropping it in order to check FK constraints. - ** If the parent table of an FK constraint on the current table is - ** missing, behave as if it is empty. i.e. decrement the relevant - ** FK counter for each row of the current table with non-NULL keys. - */ - Vdbe *v = sqlite3GetVdbe(pParse); - int iJump = sqlite3VdbeCurrentAddr(v) + pFKey->nCol + 1; - for(i=0; inCol; i++){ - int iReg = pFKey->aCol[i].iFrom + regOld + 1; - sqlite3VdbeAddOp2(v, OP_IsNull, iReg, iJump); - } - sqlite3VdbeAddOp2(v, OP_FkCounter, pFKey->isDeferred, -1); - } - continue; - } - assert( pFKey->nCol==1 || (aiFree && pIdx) ); - - if( aiFree ){ - aiCol = aiFree; - }else{ - iCol = pFKey->aCol[0].iFrom; - aiCol = &iCol; - } - for(i=0; inCol; i++){ - if( aiCol[i]==pTab->iPKey ){ - aiCol[i] = -1; - } -#ifndef SQLITE_OMIT_AUTHORIZATION - /* Request permission to read the parent key columns. If the - ** authorization callback returns SQLITE_IGNORE, behave as if any - ** values read from the parent table are NULL. */ - if( db->xAuth ){ - int rcauth; - char *zCol = pTo->aCol[pIdx ? pIdx->aiColumn[i] : pTo->iPKey].zName; - rcauth = sqlite3AuthReadCol(pParse, pTo->zName, zCol, iDb); - isIgnore = (rcauth==SQLITE_IGNORE); - } -#endif - } - - /* Take a shared-cache advisory read-lock on the parent table. Allocate - ** a cursor to use to search the unique index on the parent key columns - ** in the parent table. */ - sqlite3TableLock(pParse, iDb, pTo->tnum, 0, pTo->zName); - pParse->nTab++; - - if( regOld!=0 ){ - /* A row is being removed from the child table. Search for the parent. - ** If the parent does not exist, removing the child row resolves an - ** outstanding foreign key constraint violation. */ - fkLookupParent(pParse, iDb, pTo, pIdx, pFKey, aiCol, regOld, -1,isIgnore); - } - if( regNew!=0 ){ - /* A row is being added to the child table. If a parent row cannot - ** be found, adding the child row has violated the FK constraint. */ - fkLookupParent(pParse, iDb, pTo, pIdx, pFKey, aiCol, regNew, +1,isIgnore); - } - - sqlite3DbFree(db, aiFree); - } - - /* Loop through all the foreign key constraints that refer to this table */ - for(pFKey = sqlite3FkReferences(pTab); pFKey; pFKey=pFKey->pNextTo){ - Index *pIdx = 0; /* Foreign key index for pFKey */ - SrcList *pSrc; - int *aiCol = 0; - - if( !pFKey->isDeferred && !pParse->pToplevel && !pParse->isMultiWrite ){ - assert( regOld==0 && regNew!=0 ); - /* Inserting a single row into a parent table cannot cause an immediate - ** foreign key violation. So do nothing in this case. */ - continue; - } - - if( locateFkeyIndex(pParse, pTab, pFKey, &pIdx, &aiCol) ){ - if( !isIgnoreErrors || db->mallocFailed ) return; - continue; - } - assert( aiCol || pFKey->nCol==1 ); - - /* Create a SrcList structure containing a single table (the table - ** the foreign key that refers to this table is attached to). This - ** is required for the sqlite3WhereXXX() interface. */ - pSrc = sqlite3SrcListAppend(db, 0, 0, 0); - if( pSrc ){ - struct SrcList_item *pItem = pSrc->a; - pItem->pTab = pFKey->pFrom; - pItem->zName = pFKey->pFrom->zName; - pItem->pTab->nRef++; - pItem->iCursor = pParse->nTab++; - - if( regNew!=0 ){ - fkScanChildren(pParse, pSrc, pTab, pIdx, pFKey, aiCol, regNew, -1); - } - if( regOld!=0 ){ - /* If there is a RESTRICT action configured for the current operation - ** on the parent table of this FK, then throw an exception - ** immediately if the FK constraint is violated, even if this is a - ** deferred trigger. That's what RESTRICT means. To defer checking - ** the constraint, the FK should specify NO ACTION (represented - ** using OE_None). NO ACTION is the default. */ - fkScanChildren(pParse, pSrc, pTab, pIdx, pFKey, aiCol, regOld, 1); - } - pItem->zName = 0; - sqlite3SrcListDelete(db, pSrc); - } - sqlite3DbFree(db, aiCol); - } -} - -#define COLUMN_MASK(x) (((x)>31) ? 0xffffffff : ((u32)1<<(x))) - -/* -** This function is called before generating code to update or delete a -** row contained in table pTab. -*/ -u32 sqlite3FkOldmask( - Parse *pParse, /* Parse context */ - Table *pTab /* Table being modified */ -){ - u32 mask = 0; - if( pParse->db->flags&SQLITE_ForeignKeys ){ - FKey *p; - int i; - for(p=pTab->pFKey; p; p=p->pNextFrom){ - for(i=0; inCol; i++) mask |= COLUMN_MASK(p->aCol[i].iFrom); - } - for(p=sqlite3FkReferences(pTab); p; p=p->pNextTo){ - Index *pIdx = 0; - locateFkeyIndex(pParse, pTab, p, &pIdx, 0); - if( pIdx ){ - for(i=0; inColumn; i++) mask |= COLUMN_MASK(pIdx->aiColumn[i]); - } - } - } - return mask; -} - -/* -** This function is called before generating code to update or delete a -** row contained in table pTab. If the operation is a DELETE, then -** parameter aChange is passed a NULL value. For an UPDATE, aChange points -** to an array of size N, where N is the number of columns in table pTab. -** If the i'th column is not modified by the UPDATE, then the corresponding -** entry in the aChange[] array is set to -1. If the column is modified, -** the value is 0 or greater. Parameter chngRowid is set to true if the -** UPDATE statement modifies the rowid fields of the table. -** -** If any foreign key processing will be required, this function returns -** true. If there is no foreign key related processing, this function -** returns false. -*/ -int sqlite3FkRequired( - Parse *pParse, /* Parse context */ - Table *pTab, /* Table being modified */ - int *aChange, /* Non-NULL for UPDATE operations */ - int chngRowid /* True for UPDATE that affects rowid */ -){ - if( pParse->db->flags&SQLITE_ForeignKeys ){ - if( !aChange ){ - /* A DELETE operation. Foreign key processing is required if the - ** table in question is either the child or parent table for any - ** foreign key constraint. */ - return (sqlite3FkReferences(pTab) || pTab->pFKey); - }else{ - /* This is an UPDATE. Foreign key processing is only required if the - ** operation modifies one or more child or parent key columns. */ - int i; - FKey *p; - - /* Check if any child key columns are being modified. */ - for(p=pTab->pFKey; p; p=p->pNextFrom){ - for(i=0; inCol; i++){ - int iChildKey = p->aCol[i].iFrom; - if( aChange[iChildKey]>=0 ) return 1; - if( iChildKey==pTab->iPKey && chngRowid ) return 1; - } - } - - /* Check if any parent key columns are being modified. */ - for(p=sqlite3FkReferences(pTab); p; p=p->pNextTo){ - for(i=0; inCol; i++){ - char *zKey = p->aCol[i].zCol; - int iKey; - for(iKey=0; iKeynCol; iKey++){ - Column *pCol = &pTab->aCol[iKey]; - if( (zKey ? !sqlite3StrICmp(pCol->zName, zKey) : pCol->isPrimKey) ){ - if( aChange[iKey]>=0 ) return 1; - if( iKey==pTab->iPKey && chngRowid ) return 1; - } - } - } - } - } - } - return 0; -} - -/* -** This function is called when an UPDATE or DELETE operation is being -** compiled on table pTab, which is the parent table of foreign-key pFKey. -** If the current operation is an UPDATE, then the pChanges parameter is -** passed a pointer to the list of columns being modified. If it is a -** DELETE, pChanges is passed a NULL pointer. -** -** It returns a pointer to a Trigger structure containing a trigger -** equivalent to the ON UPDATE or ON DELETE action specified by pFKey. -** If the action is "NO ACTION" or "RESTRICT", then a NULL pointer is -** returned (these actions require no special handling by the triggers -** sub-system, code for them is created by fkScanChildren()). -** -** For example, if pFKey is the foreign key and pTab is table "p" in -** the following schema: -** -** CREATE TABLE p(pk PRIMARY KEY); -** CREATE TABLE c(ck REFERENCES p ON DELETE CASCADE); -** -** then the returned trigger structure is equivalent to: -** -** CREATE TRIGGER ... DELETE ON p BEGIN -** DELETE FROM c WHERE ck = old.pk; -** END; -** -** The returned pointer is cached as part of the foreign key object. It -** is eventually freed along with the rest of the foreign key object by -** sqlite3FkDelete(). -*/ -static Trigger *fkActionTrigger( - Parse *pParse, /* Parse context */ - Table *pTab, /* Table being updated or deleted from */ - FKey *pFKey, /* Foreign key to get action for */ - ExprList *pChanges /* Change-list for UPDATE, NULL for DELETE */ -){ - sqlite3 *db = pParse->db; /* Database handle */ - int action; /* One of OE_None, OE_Cascade etc. */ - Trigger *pTrigger; /* Trigger definition to return */ - int iAction = (pChanges!=0); /* 1 for UPDATE, 0 for DELETE */ - - action = pFKey->aAction[iAction]; - pTrigger = pFKey->apTrigger[iAction]; - - if( action!=OE_None && !pTrigger ){ - u8 enableLookaside; /* Copy of db->lookaside.bEnabled */ - char const *zFrom; /* Name of child table */ - int nFrom; /* Length in bytes of zFrom */ - Index *pIdx = 0; /* Parent key index for this FK */ - int *aiCol = 0; /* child table cols -> parent key cols */ - TriggerStep *pStep = 0; /* First (only) step of trigger program */ - Expr *pWhere = 0; /* WHERE clause of trigger step */ - ExprList *pList = 0; /* Changes list if ON UPDATE CASCADE */ - Select *pSelect = 0; /* If RESTRICT, "SELECT RAISE(...)" */ - int i; /* Iterator variable */ - Expr *pWhen = 0; /* WHEN clause for the trigger */ - - if( locateFkeyIndex(pParse, pTab, pFKey, &pIdx, &aiCol) ) return 0; - assert( aiCol || pFKey->nCol==1 ); - - for(i=0; inCol; i++){ - Token tOld = { "old", 3 }; /* Literal "old" token */ - Token tNew = { "new", 3 }; /* Literal "new" token */ - Token tFromCol; /* Name of column in child table */ - Token tToCol; /* Name of column in parent table */ - int iFromCol; /* Idx of column in child table */ - Expr *pEq; /* tFromCol = OLD.tToCol */ - - iFromCol = aiCol ? aiCol[i] : pFKey->aCol[0].iFrom; - assert( iFromCol>=0 ); - tToCol.z = pIdx ? pTab->aCol[pIdx->aiColumn[i]].zName : "oid"; - tFromCol.z = pFKey->pFrom->aCol[iFromCol].zName; - - tToCol.n = sqlite3Strlen30(tToCol.z); - tFromCol.n = sqlite3Strlen30(tFromCol.z); - - /* Create the expression "OLD.zToCol = zFromCol". It is important - ** that the "OLD.zToCol" term is on the LHS of the = operator, so - ** that the affinity and collation sequence associated with the - ** parent table are used for the comparison. */ - pEq = sqlite3PExpr(pParse, TK_EQ, - sqlite3PExpr(pParse, TK_DOT, - sqlite3PExpr(pParse, TK_ID, 0, 0, &tOld), - sqlite3PExpr(pParse, TK_ID, 0, 0, &tToCol) - , 0), - sqlite3PExpr(pParse, TK_ID, 0, 0, &tFromCol) - , 0); - pWhere = sqlite3ExprAnd(db, pWhere, pEq); - - /* For ON UPDATE, construct the next term of the WHEN clause. - ** The final WHEN clause will be like this: - ** - ** WHEN NOT(old.col1 IS new.col1 AND ... AND old.colN IS new.colN) - */ - if( pChanges ){ - pEq = sqlite3PExpr(pParse, TK_IS, - sqlite3PExpr(pParse, TK_DOT, - sqlite3PExpr(pParse, TK_ID, 0, 0, &tOld), - sqlite3PExpr(pParse, TK_ID, 0, 0, &tToCol), - 0), - sqlite3PExpr(pParse, TK_DOT, - sqlite3PExpr(pParse, TK_ID, 0, 0, &tNew), - sqlite3PExpr(pParse, TK_ID, 0, 0, &tToCol), - 0), - 0); - pWhen = sqlite3ExprAnd(db, pWhen, pEq); - } - - if( action!=OE_Restrict && (action!=OE_Cascade || pChanges) ){ - Expr *pNew; - if( action==OE_Cascade ){ - pNew = sqlite3PExpr(pParse, TK_DOT, - sqlite3PExpr(pParse, TK_ID, 0, 0, &tNew), - sqlite3PExpr(pParse, TK_ID, 0, 0, &tToCol) - , 0); - }else if( action==OE_SetDflt ){ - Expr *pDflt = pFKey->pFrom->aCol[iFromCol].pDflt; - if( pDflt ){ - pNew = sqlite3ExprDup(db, pDflt, 0); - }else{ - pNew = sqlite3PExpr(pParse, TK_NULL, 0, 0, 0); - } - }else{ - pNew = sqlite3PExpr(pParse, TK_NULL, 0, 0, 0); - } - pList = sqlite3ExprListAppend(pParse, pList, pNew); - sqlite3ExprListSetName(pParse, pList, &tFromCol, 0); - } - } - sqlite3DbFree(db, aiCol); - - zFrom = pFKey->pFrom->zName; - nFrom = sqlite3Strlen30(zFrom); - - if( action==OE_Restrict ){ - Token tFrom; - Expr *pRaise; - - tFrom.z = zFrom; - tFrom.n = nFrom; - pRaise = sqlite3Expr(db, TK_RAISE, "foreign key constraint failed"); - if( pRaise ){ - pRaise->affinity = OE_Abort; - } - pSelect = sqlite3SelectNew(pParse, - sqlite3ExprListAppend(pParse, 0, pRaise), - sqlite3SrcListAppend(db, 0, &tFrom, 0), - pWhere, - 0, 0, 0, 0, 0, 0 - ); - pWhere = 0; - } - - /* Disable lookaside memory allocation */ - enableLookaside = db->lookaside.bEnabled; - db->lookaside.bEnabled = 0; - - pTrigger = (Trigger *)sqlite3DbMallocZero(db, - sizeof(Trigger) + /* struct Trigger */ - sizeof(TriggerStep) + /* Single step in trigger program */ - nFrom + 1 /* Space for pStep->target.z */ - ); - if( pTrigger ){ - pStep = pTrigger->step_list = (TriggerStep *)&pTrigger[1]; - pStep->target.z = (char *)&pStep[1]; - pStep->target.n = nFrom; - memcpy((char *)pStep->target.z, zFrom, nFrom); - - pStep->pWhere = sqlite3ExprDup(db, pWhere, EXPRDUP_REDUCE); - pStep->pExprList = sqlite3ExprListDup(db, pList, EXPRDUP_REDUCE); - pStep->pSelect = sqlite3SelectDup(db, pSelect, EXPRDUP_REDUCE); - if( pWhen ){ - pWhen = sqlite3PExpr(pParse, TK_NOT, pWhen, 0, 0); - pTrigger->pWhen = sqlite3ExprDup(db, pWhen, EXPRDUP_REDUCE); - } - } - - /* Re-enable the lookaside buffer, if it was disabled earlier. */ - db->lookaside.bEnabled = enableLookaside; - - sqlite3ExprDelete(db, pWhere); - sqlite3ExprDelete(db, pWhen); - sqlite3ExprListDelete(db, pList); - sqlite3SelectDelete(db, pSelect); - if( db->mallocFailed==1 ){ - fkTriggerDelete(db, pTrigger); - return 0; - } - assert( pStep!=0 ); - - switch( action ){ - case OE_Restrict: - pStep->op = TK_SELECT; - break; - case OE_Cascade: - if( !pChanges ){ - pStep->op = TK_DELETE; - break; - } - default: - pStep->op = TK_UPDATE; - } - pStep->pTrig = pTrigger; - pTrigger->pSchema = pTab->pSchema; - pTrigger->pTabSchema = pTab->pSchema; - pFKey->apTrigger[iAction] = pTrigger; - pTrigger->op = (pChanges ? TK_UPDATE : TK_DELETE); - } - - return pTrigger; -} - -/* -** This function is called when deleting or updating a row to implement -** any required CASCADE, SET NULL or SET DEFAULT actions. -*/ -void sqlite3FkActions( - Parse *pParse, /* Parse context */ - Table *pTab, /* Table being updated or deleted from */ - ExprList *pChanges, /* Change-list for UPDATE, NULL for DELETE */ - int regOld /* Address of array containing old row */ -){ - /* If foreign-key support is enabled, iterate through all FKs that - ** refer to table pTab. If there is an action associated with the FK - ** for this operation (either update or delete), invoke the associated - ** trigger sub-program. */ - if( pParse->db->flags&SQLITE_ForeignKeys ){ - FKey *pFKey; /* Iterator variable */ - for(pFKey = sqlite3FkReferences(pTab); pFKey; pFKey=pFKey->pNextTo){ - Trigger *pAction = fkActionTrigger(pParse, pTab, pFKey, pChanges); - if( pAction ){ - sqlite3CodeRowTriggerDirect(pParse, pAction, pTab, regOld, OE_Abort, 0); - } - } - } -} - -#endif /* ifndef SQLITE_OMIT_TRIGGER */ - -/* -** Free all memory associated with foreign key definitions attached to -** table pTab. Remove the deleted foreign keys from the Schema.fkeyHash -** hash table. -*/ -void sqlite3FkDelete(sqlite3 *db, Table *pTab){ - FKey *pFKey; /* Iterator variable */ - FKey *pNext; /* Copy of pFKey->pNextFrom */ - - assert( db==0 || sqlite3SchemaMutexHeld(db, 0, pTab->pSchema) ); - for(pFKey=pTab->pFKey; pFKey; pFKey=pNext){ - - /* Remove the FK from the fkeyHash hash table. */ - if( !db || db->pnBytesFreed==0 ){ - if( pFKey->pPrevTo ){ - pFKey->pPrevTo->pNextTo = pFKey->pNextTo; - }else{ - void *p = (void *)pFKey->pNextTo; - const char *z = (p ? pFKey->pNextTo->zTo : pFKey->zTo); - sqlite3HashInsert(&pTab->pSchema->fkeyHash, z, sqlite3Strlen30(z), p); - } - if( pFKey->pNextTo ){ - pFKey->pNextTo->pPrevTo = pFKey->pPrevTo; - } - } - - /* EV: R-30323-21917 Each foreign key constraint in SQLite is - ** classified as either immediate or deferred. - */ - assert( pFKey->isDeferred==0 || pFKey->isDeferred==1 ); - - /* Delete any triggers created to implement actions for this FK. */ -#ifndef SQLITE_OMIT_TRIGGER - fkTriggerDelete(db, pFKey->apTrigger[0]); - fkTriggerDelete(db, pFKey->apTrigger[1]); -#endif - - pNext = pFKey->pNextFrom; - sqlite3DbFree(db, pFKey); - } -} -#endif /* ifndef SQLITE_OMIT_FOREIGN_KEY */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/func.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/func.c deleted file mode 100644 index 13fa074dbe..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/func.c +++ /dev/null @@ -1,1605 +0,0 @@ -/* -** 2002 February 23 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file contains the C functions that implement various SQL -** functions of SQLite. -** -** There is only one exported symbol in this file - the function -** sqliteRegisterBuildinFunctions() found at the bottom of the file. -** All other code has file scope. -*/ -#include "sqliteInt.h" -#include -#include -#include "vdbeInt.h" - -/* -** Return the collating function associated with a function. -*/ -static CollSeq *sqlite3GetFuncCollSeq(sqlite3_context *context){ - return context->pColl; -} - -/* -** Implementation of the non-aggregate min() and max() functions -*/ -static void minmaxFunc( - sqlite3_context *context, - int argc, - sqlite3_value **argv -){ - int i; - int mask; /* 0 for min() or 0xffffffff for max() */ - int iBest; - CollSeq *pColl; - - assert( argc>1 ); - mask = sqlite3_user_data(context)==0 ? 0 : -1; - pColl = sqlite3GetFuncCollSeq(context); - assert( pColl ); - assert( mask==-1 || mask==0 ); - iBest = 0; - if( sqlite3_value_type(argv[0])==SQLITE_NULL ) return; - for(i=1; i=0 ){ - testcase( mask==0 ); - iBest = i; - } - } - sqlite3_result_value(context, argv[iBest]); -} - -/* -** Return the type of the argument. -*/ -static void typeofFunc( - sqlite3_context *context, - int NotUsed, - sqlite3_value **argv -){ - const char *z = 0; - UNUSED_PARAMETER(NotUsed); - switch( sqlite3_value_type(argv[0]) ){ - case SQLITE_INTEGER: z = "integer"; break; - case SQLITE_TEXT: z = "text"; break; - case SQLITE_FLOAT: z = "real"; break; - case SQLITE_BLOB: z = "blob"; break; - default: z = "null"; break; - } - sqlite3_result_text(context, z, -1, SQLITE_STATIC); -} - - -/* -** Implementation of the length() function -*/ -static void lengthFunc( - sqlite3_context *context, - int argc, - sqlite3_value **argv -){ - int len; - - assert( argc==1 ); - UNUSED_PARAMETER(argc); - switch( sqlite3_value_type(argv[0]) ){ - case SQLITE_BLOB: - case SQLITE_INTEGER: - case SQLITE_FLOAT: { - sqlite3_result_int(context, sqlite3_value_bytes(argv[0])); - break; - } - case SQLITE_TEXT: { - const unsigned char *z = sqlite3_value_text(argv[0]); - if( z==0 ) return; - len = 0; - while( *z ){ - len++; - SQLITE_SKIP_UTF8(z); - } - sqlite3_result_int(context, len); - break; - } - default: { - sqlite3_result_null(context); - break; - } - } -} - -/* -** Implementation of the abs() function. -** -** IMP: R-23979-26855 The abs(X) function returns the absolute value of -** the numeric argument X. -*/ -static void absFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ - assert( argc==1 ); - UNUSED_PARAMETER(argc); - switch( sqlite3_value_type(argv[0]) ){ - case SQLITE_INTEGER: { - i64 iVal = sqlite3_value_int64(argv[0]); - if( iVal<0 ){ - if( (iVal<<1)==0 ){ - /* IMP: R-35460-15084 If X is the integer -9223372036854775807 then - ** abs(X) throws an integer overflow error since there is no - ** equivalent positive 64-bit two complement value. */ - sqlite3_result_error(context, "integer overflow", -1); - return; - } - iVal = -iVal; - } - sqlite3_result_int64(context, iVal); - break; - } - case SQLITE_NULL: { - /* IMP: R-37434-19929 Abs(X) returns NULL if X is NULL. */ - sqlite3_result_null(context); - break; - } - default: { - /* Because sqlite3_value_double() returns 0.0 if the argument is not - ** something that can be converted into a number, we have: - ** IMP: R-57326-31541 Abs(X) return 0.0 if X is a string or blob that - ** cannot be converted to a numeric value. - */ - double rVal = sqlite3_value_double(argv[0]); - if( rVal<0 ) rVal = -rVal; - sqlite3_result_double(context, rVal); - break; - } - } -} - -/* -** Implementation of the substr() function. -** -** substr(x,p1,p2) returns p2 characters of x[] beginning with p1. -** p1 is 1-indexed. So substr(x,1,1) returns the first character -** of x. If x is text, then we actually count UTF-8 characters. -** If x is a blob, then we count bytes. -** -** If p1 is negative, then we begin abs(p1) from the end of x[]. -** -** If p2 is negative, return the p2 characters preceeding p1. -*/ -static void substrFunc( - sqlite3_context *context, - int argc, - sqlite3_value **argv -){ - const unsigned char *z; - const unsigned char *z2; - int len; - int p0type; - i64 p1, p2; - int negP2 = 0; - - assert( argc==3 || argc==2 ); - if( sqlite3_value_type(argv[1])==SQLITE_NULL - || (argc==3 && sqlite3_value_type(argv[2])==SQLITE_NULL) - ){ - return; - } - p0type = sqlite3_value_type(argv[0]); - p1 = sqlite3_value_int(argv[1]); - if( p0type==SQLITE_BLOB ){ - len = sqlite3_value_bytes(argv[0]); - z = sqlite3_value_blob(argv[0]); - if( z==0 ) return; - assert( len==sqlite3_value_bytes(argv[0]) ); - }else{ - z = sqlite3_value_text(argv[0]); - if( z==0 ) return; - len = 0; - if( p1<0 ){ - for(z2=z; *z2; len++){ - SQLITE_SKIP_UTF8(z2); - } - } - } - if( argc==3 ){ - p2 = sqlite3_value_int(argv[2]); - if( p2<0 ){ - p2 = -p2; - negP2 = 1; - } - }else{ - p2 = sqlite3_context_db_handle(context)->aLimit[SQLITE_LIMIT_LENGTH]; - } - if( p1<0 ){ - p1 += len; - if( p1<0 ){ - p2 += p1; - if( p2<0 ) p2 = 0; - p1 = 0; - } - }else if( p1>0 ){ - p1--; - }else if( p2>0 ){ - p2--; - } - if( negP2 ){ - p1 -= p2; - if( p1<0 ){ - p2 += p1; - p1 = 0; - } - } - assert( p1>=0 && p2>=0 ); - if( p0type!=SQLITE_BLOB ){ - while( *z && p1 ){ - SQLITE_SKIP_UTF8(z); - p1--; - } - for(z2=z; *z2 && p2; p2--){ - SQLITE_SKIP_UTF8(z2); - } - sqlite3_result_text(context, (char*)z, (int)(z2-z), SQLITE_TRANSIENT); - }else{ - if( p1+p2>len ){ - p2 = len-p1; - if( p2<0 ) p2 = 0; - } - sqlite3_result_blob(context, (char*)&z[p1], (int)p2, SQLITE_TRANSIENT); - } -} - -/* -** Implementation of the round() function -*/ -#ifndef SQLITE_OMIT_FLOATING_POINT -static void roundFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ - int n = 0; - double r; - char *zBuf; - assert( argc==1 || argc==2 ); - if( argc==2 ){ - if( SQLITE_NULL==sqlite3_value_type(argv[1]) ) return; - n = sqlite3_value_int(argv[1]); - if( n>30 ) n = 30; - if( n<0 ) n = 0; - } - if( sqlite3_value_type(argv[0])==SQLITE_NULL ) return; - r = sqlite3_value_double(argv[0]); - /* If Y==0 and X will fit in a 64-bit int, - ** handle the rounding directly, - ** otherwise use printf. - */ - if( n==0 && r>=0 && r0 ); - testcase( nByte==db->aLimit[SQLITE_LIMIT_LENGTH] ); - testcase( nByte==db->aLimit[SQLITE_LIMIT_LENGTH]+1 ); - if( nByte>db->aLimit[SQLITE_LIMIT_LENGTH] ){ - sqlite3_result_error_toobig(context); - z = 0; - }else{ - z = sqlite3Malloc((int)nByte); - if( !z ){ - sqlite3_result_error_nomem(context); - } - } - return z; -} - -/* -** Implementation of the upper() and lower() SQL functions. -*/ -static void upperFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ - char *z1; - const char *z2; - int i, n; - UNUSED_PARAMETER(argc); - z2 = (char*)sqlite3_value_text(argv[0]); - n = sqlite3_value_bytes(argv[0]); - /* Verify that the call to _bytes() does not invalidate the _text() pointer */ - assert( z2==(char*)sqlite3_value_text(argv[0]) ); - if( z2 ){ - z1 = contextMalloc(context, ((i64)n)+1); - if( z1 ){ - for(i=0; imatchOne; - u8 matchAll = pInfo->matchAll; - u8 matchSet = pInfo->matchSet; - u8 noCase = pInfo->noCase; - int prevEscape = 0; /* True if the previous character was 'escape' */ - - while( (c = sqlite3Utf8Read(zPattern,&zPattern))!=0 ){ - if( !prevEscape && c==matchAll ){ - while( (c=sqlite3Utf8Read(zPattern,&zPattern)) == matchAll - || c == matchOne ){ - if( c==matchOne && sqlite3Utf8Read(zString, &zString)==0 ){ - return 0; - } - } - if( c==0 ){ - return 1; - }else if( c==esc ){ - c = sqlite3Utf8Read(zPattern, &zPattern); - if( c==0 ){ - return 0; - } - }else if( c==matchSet ){ - assert( esc==0 ); /* This is GLOB, not LIKE */ - assert( matchSet<0x80 ); /* '[' is a single-byte character */ - while( *zString && patternCompare(&zPattern[-1],zString,pInfo,esc)==0 ){ - SQLITE_SKIP_UTF8(zString); - } - return *zString!=0; - } - while( (c2 = sqlite3Utf8Read(zString,&zString))!=0 ){ - if( noCase ){ - GlogUpperToLower(c2); - GlogUpperToLower(c); - while( c2 != 0 && c2 != c ){ - c2 = sqlite3Utf8Read(zString, &zString); - GlogUpperToLower(c2); - } - }else{ - while( c2 != 0 && c2 != c ){ - c2 = sqlite3Utf8Read(zString, &zString); - } - } - if( c2==0 ) return 0; - if( patternCompare(zPattern,zString,pInfo,esc) ) return 1; - } - return 0; - }else if( !prevEscape && c==matchOne ){ - if( sqlite3Utf8Read(zString, &zString)==0 ){ - return 0; - } - }else if( c==matchSet ){ - u32 prior_c = 0; - assert( esc==0 ); /* This only occurs for GLOB, not LIKE */ - seen = 0; - invert = 0; - c = sqlite3Utf8Read(zString, &zString); - if( c==0 ) return 0; - c2 = sqlite3Utf8Read(zPattern, &zPattern); - if( c2=='^' ){ - invert = 1; - c2 = sqlite3Utf8Read(zPattern, &zPattern); - } - if( c2==']' ){ - if( c==']' ) seen = 1; - c2 = sqlite3Utf8Read(zPattern, &zPattern); - } - while( c2 && c2!=']' ){ - if( c2=='-' && zPattern[0]!=']' && zPattern[0]!=0 && prior_c>0 ){ - c2 = sqlite3Utf8Read(zPattern, &zPattern); - if( c>=prior_c && c<=c2 ) seen = 1; - prior_c = 0; - }else{ - if( c==c2 ){ - seen = 1; - } - prior_c = c2; - } - c2 = sqlite3Utf8Read(zPattern, &zPattern); - } - if( c2==0 || (seen ^ invert)==0 ){ - return 0; - } - }else if( esc==c && !prevEscape ){ - prevEscape = 1; - }else{ - c2 = sqlite3Utf8Read(zString, &zString); - if( noCase ){ - GlogUpperToLower(c); - GlogUpperToLower(c2); - } - if( c!=c2 ){ - return 0; - } - prevEscape = 0; - } - } - return *zString==0; -} - -/* -** Count the number of times that the LIKE operator (or GLOB which is -** just a variation of LIKE) gets called. This is used for testing -** only. -*/ -#ifdef SQLITE_TEST -int sqlite3_like_count = 0; -#endif - - -/* -** Implementation of the like() SQL function. This function implements -** the build-in LIKE operator. The first argument to the function is the -** pattern and the second argument is the string. So, the SQL statements: -** -** A LIKE B -** -** is implemented as like(B,A). -** -** This same function (with a different compareInfo structure) computes -** the GLOB operator. -*/ -static void likeFunc( - sqlite3_context *context, - int argc, - sqlite3_value **argv -){ - const unsigned char *zA, *zB; - u32 escape = 0; - int nPat; - sqlite3 *db = sqlite3_context_db_handle(context); - - zB = sqlite3_value_text(argv[0]); - zA = sqlite3_value_text(argv[1]); - - /* Limit the length of the LIKE or GLOB pattern to avoid problems - ** of deep recursion and N*N behavior in patternCompare(). - */ - nPat = sqlite3_value_bytes(argv[0]); - testcase( nPat==db->aLimit[SQLITE_LIMIT_LIKE_PATTERN_LENGTH] ); - testcase( nPat==db->aLimit[SQLITE_LIMIT_LIKE_PATTERN_LENGTH]+1 ); - if( nPat > db->aLimit[SQLITE_LIMIT_LIKE_PATTERN_LENGTH] ){ - sqlite3_result_error(context, "LIKE or GLOB pattern too complex", -1); - return; - } - assert( zB==sqlite3_value_text(argv[0]) ); /* Encoding did not change */ - - if( argc==3 ){ - /* The escape character string must consist of a single UTF-8 character. - ** Otherwise, return an error. - */ - const unsigned char *zEsc = sqlite3_value_text(argv[2]); - if( zEsc==0 ) return; - if( sqlite3Utf8CharLen((char*)zEsc, -1)!=1 ){ - sqlite3_result_error(context, - "ESCAPE expression must be a single character", -1); - return; - } - escape = sqlite3Utf8Read(zEsc, &zEsc); - } - if( zA && zB ){ - struct compareInfo *pInfo = sqlite3_user_data(context); -#ifdef SQLITE_TEST - sqlite3_like_count++; -#endif - - sqlite3_result_int(context, patternCompare(zB, zA, pInfo, escape)); - } -} - -/* -** Implementation of the NULLIF(x,y) function. The result is the first -** argument if the arguments are different. The result is NULL if the -** arguments are equal to each other. -*/ -static void nullifFunc( - sqlite3_context *context, - int NotUsed, - sqlite3_value **argv -){ - CollSeq *pColl = sqlite3GetFuncCollSeq(context); - UNUSED_PARAMETER(NotUsed); - if( sqlite3MemCompare(argv[0], argv[1], pColl)!=0 ){ - sqlite3_result_value(context, argv[0]); - } -} - -/* -** Implementation of the sqlite_version() function. The result is the version -** of the SQLite library that is running. -*/ -static void versionFunc( - sqlite3_context *context, - int NotUsed, - sqlite3_value **NotUsed2 -){ - UNUSED_PARAMETER2(NotUsed, NotUsed2); - /* IMP: R-48699-48617 This function is an SQL wrapper around the - ** sqlite3_libversion() C-interface. */ - sqlite3_result_text(context, sqlite3_libversion(), -1, SQLITE_STATIC); -} - -/* -** Implementation of the sqlite_source_id() function. The result is a string -** that identifies the particular version of the source code used to build -** SQLite. -*/ -static void sourceidFunc( - sqlite3_context *context, - int NotUsed, - sqlite3_value **NotUsed2 -){ - UNUSED_PARAMETER2(NotUsed, NotUsed2); - /* IMP: R-24470-31136 This function is an SQL wrapper around the - ** sqlite3_sourceid() C interface. */ - sqlite3_result_text(context, sqlite3_sourceid(), -1, SQLITE_STATIC); -} - -/* -** Implementation of the sqlite_log() function. This is a wrapper around -** sqlite3_log(). The return value is NULL. The function exists purely for -** its side-effects. -*/ -static void errlogFunc( - sqlite3_context *context, - int argc, - sqlite3_value **argv -){ - UNUSED_PARAMETER(argc); - UNUSED_PARAMETER(context); - sqlite3_log(sqlite3_value_int(argv[0]), "%s", sqlite3_value_text(argv[1])); -} - -/* -** Implementation of the sqlite_compileoption_used() function. -** The result is an integer that identifies if the compiler option -** was used to build SQLite. -*/ -#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS -static void compileoptionusedFunc( - sqlite3_context *context, - int argc, - sqlite3_value **argv -){ - const char *zOptName; - assert( argc==1 ); - UNUSED_PARAMETER(argc); - /* IMP: R-39564-36305 The sqlite_compileoption_used() SQL - ** function is a wrapper around the sqlite3_compileoption_used() C/C++ - ** function. - */ - if( (zOptName = (const char*)sqlite3_value_text(argv[0]))!=0 ){ - sqlite3_result_int(context, sqlite3_compileoption_used(zOptName)); - } -} -#endif /* SQLITE_OMIT_COMPILEOPTION_DIAGS */ - -/* -** Implementation of the sqlite_compileoption_get() function. -** The result is a string that identifies the compiler options -** used to build SQLite. -*/ -#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS -static void compileoptiongetFunc( - sqlite3_context *context, - int argc, - sqlite3_value **argv -){ - int n; - assert( argc==1 ); - UNUSED_PARAMETER(argc); - /* IMP: R-04922-24076 The sqlite_compileoption_get() SQL function - ** is a wrapper around the sqlite3_compileoption_get() C/C++ function. - */ - n = sqlite3_value_int(argv[0]); - sqlite3_result_text(context, sqlite3_compileoption_get(n), -1, SQLITE_STATIC); -} -#endif /* SQLITE_OMIT_COMPILEOPTION_DIAGS */ - -/* Array for converting from half-bytes (nybbles) into ASCII hex -** digits. */ -static const char hexdigits[] = { - '0', '1', '2', '3', '4', '5', '6', '7', - '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' -}; - -/* -** EXPERIMENTAL - This is not an official function. The interface may -** change. This function may disappear. Do not write code that depends -** on this function. -** -** Implementation of the QUOTE() function. This function takes a single -** argument. If the argument is numeric, the return value is the same as -** the argument. If the argument is NULL, the return value is the string -** "NULL". Otherwise, the argument is enclosed in single quotes with -** single-quote escapes. -*/ -static void quoteFunc(sqlite3_context *context, int argc, sqlite3_value **argv){ - assert( argc==1 ); - UNUSED_PARAMETER(argc); - switch( sqlite3_value_type(argv[0]) ){ - case SQLITE_INTEGER: - case SQLITE_FLOAT: { - sqlite3_result_value(context, argv[0]); - break; - } - case SQLITE_BLOB: { - char *zText = 0; - char const *zBlob = sqlite3_value_blob(argv[0]); - int nBlob = sqlite3_value_bytes(argv[0]); - assert( zBlob==sqlite3_value_blob(argv[0]) ); /* No encoding change */ - zText = (char *)contextMalloc(context, (2*(i64)nBlob)+4); - if( zText ){ - int i; - for(i=0; i>4)&0x0F]; - zText[(i*2)+3] = hexdigits[(zBlob[i])&0x0F]; - } - zText[(nBlob*2)+2] = '\''; - zText[(nBlob*2)+3] = '\0'; - zText[0] = 'X'; - zText[1] = '\''; - sqlite3_result_text(context, zText, -1, SQLITE_TRANSIENT); - sqlite3_free(zText); - } - break; - } - case SQLITE_TEXT: { - int i,j; - u64 n; - const unsigned char *zArg = sqlite3_value_text(argv[0]); - char *z; - - if( zArg==0 ) return; - for(i=0, n=0; zArg[i]; i++){ if( zArg[i]=='\'' ) n++; } - z = contextMalloc(context, ((i64)i)+((i64)n)+3); - if( z ){ - z[0] = '\''; - for(i=0, j=1; zArg[i]; i++){ - z[j++] = zArg[i]; - if( zArg[i]=='\'' ){ - z[j++] = '\''; - } - } - z[j++] = '\''; - z[j] = 0; - sqlite3_result_text(context, z, j, sqlite3_free); - } - break; - } - default: { - assert( sqlite3_value_type(argv[0])==SQLITE_NULL ); - sqlite3_result_text(context, "NULL", 4, SQLITE_STATIC); - break; - } - } -} - -/* -** The hex() function. Interpret the argument as a blob. Return -** a hexadecimal rendering as text. -*/ -static void hexFunc( - sqlite3_context *context, - int argc, - sqlite3_value **argv -){ - int i, n; - const unsigned char *pBlob; - char *zHex, *z; - assert( argc==1 ); - UNUSED_PARAMETER(argc); - pBlob = sqlite3_value_blob(argv[0]); - n = sqlite3_value_bytes(argv[0]); - assert( pBlob==sqlite3_value_blob(argv[0]) ); /* No encoding change */ - z = zHex = contextMalloc(context, ((i64)n)*2 + 1); - if( zHex ){ - for(i=0; i>4)&0xf]; - *(z++) = hexdigits[c&0xf]; - } - *z = 0; - sqlite3_result_text(context, zHex, n*2, sqlite3_free); - } -} - -/* -** The zeroblob(N) function returns a zero-filled blob of size N bytes. -*/ -static void zeroblobFunc( - sqlite3_context *context, - int argc, - sqlite3_value **argv -){ - i64 n; - sqlite3 *db = sqlite3_context_db_handle(context); - assert( argc==1 ); - UNUSED_PARAMETER(argc); - n = sqlite3_value_int64(argv[0]); - testcase( n==db->aLimit[SQLITE_LIMIT_LENGTH] ); - testcase( n==db->aLimit[SQLITE_LIMIT_LENGTH]+1 ); - if( n>db->aLimit[SQLITE_LIMIT_LENGTH] ){ - sqlite3_result_error_toobig(context); - }else{ - sqlite3_result_zeroblob(context, (int)n); /* IMP: R-00293-64994 */ - } -} - -/* -** The replace() function. Three arguments are all strings: call -** them A, B, and C. The result is also a string which is derived -** from A by replacing every occurance of B with C. The match -** must be exact. Collating sequences are not used. -*/ -static void replaceFunc( - sqlite3_context *context, - int argc, - sqlite3_value **argv -){ - const unsigned char *zStr; /* The input string A */ - const unsigned char *zPattern; /* The pattern string B */ - const unsigned char *zRep; /* The replacement string C */ - unsigned char *zOut; /* The output */ - int nStr; /* Size of zStr */ - int nPattern; /* Size of zPattern */ - int nRep; /* Size of zRep */ - i64 nOut; /* Maximum size of zOut */ - int loopLimit; /* Last zStr[] that might match zPattern[] */ - int i, j; /* Loop counters */ - - assert( argc==3 ); - UNUSED_PARAMETER(argc); - zStr = sqlite3_value_text(argv[0]); - if( zStr==0 ) return; - nStr = sqlite3_value_bytes(argv[0]); - assert( zStr==sqlite3_value_text(argv[0]) ); /* No encoding change */ - zPattern = sqlite3_value_text(argv[1]); - if( zPattern==0 ){ - assert( sqlite3_value_type(argv[1])==SQLITE_NULL - || sqlite3_context_db_handle(context)->mallocFailed ); - return; - } - if( zPattern[0]==0 ){ - assert( sqlite3_value_type(argv[1])!=SQLITE_NULL ); - sqlite3_result_value(context, argv[0]); - return; - } - nPattern = sqlite3_value_bytes(argv[1]); - assert( zPattern==sqlite3_value_text(argv[1]) ); /* No encoding change */ - zRep = sqlite3_value_text(argv[2]); - if( zRep==0 ) return; - nRep = sqlite3_value_bytes(argv[2]); - assert( zRep==sqlite3_value_text(argv[2]) ); - nOut = nStr + 1; - assert( nOutaLimit[SQLITE_LIMIT_LENGTH] ); - testcase( nOut-2==db->aLimit[SQLITE_LIMIT_LENGTH] ); - if( nOut-1>db->aLimit[SQLITE_LIMIT_LENGTH] ){ - sqlite3_result_error_toobig(context); - sqlite3_free(zOut); - return; - } - zOld = zOut; - zOut = sqlite3_realloc(zOut, (int)nOut); - if( zOut==0 ){ - sqlite3_result_error_nomem(context); - sqlite3_free(zOld); - return; - } - memcpy(&zOut[j], zRep, nRep); - j += nRep; - i += nPattern-1; - } - } - assert( j+nStr-i+1==nOut ); - memcpy(&zOut[j], &zStr[i], nStr-i); - j += nStr - i; - assert( j<=nOut ); - zOut[j] = 0; - sqlite3_result_text(context, (char*)zOut, j, sqlite3_free); -} - -/* -** Implementation of the TRIM(), LTRIM(), and RTRIM() functions. -** The userdata is 0x1 for left trim, 0x2 for right trim, 0x3 for both. -*/ -static void trimFunc( - sqlite3_context *context, - int argc, - sqlite3_value **argv -){ - const unsigned char *zIn; /* Input string */ - const unsigned char *zCharSet; /* Set of characters to trim */ - int nIn; /* Number of bytes in input */ - int flags; /* 1: trimleft 2: trimright 3: trim */ - int i; /* Loop counter */ - unsigned char *aLen = 0; /* Length of each character in zCharSet */ - unsigned char **azChar = 0; /* Individual characters in zCharSet */ - int nChar; /* Number of characters in zCharSet */ - - if( sqlite3_value_type(argv[0])==SQLITE_NULL ){ - return; - } - zIn = sqlite3_value_text(argv[0]); - if( zIn==0 ) return; - nIn = sqlite3_value_bytes(argv[0]); - assert( zIn==sqlite3_value_text(argv[0]) ); - if( argc==1 ){ - static const unsigned char lenOne[] = { 1 }; - static unsigned char * const azOne[] = { (u8*)" " }; - nChar = 1; - aLen = (u8*)lenOne; - azChar = (unsigned char **)azOne; - zCharSet = 0; - }else if( (zCharSet = sqlite3_value_text(argv[1]))==0 ){ - return; - }else{ - const unsigned char *z; - for(z=zCharSet, nChar=0; *z; nChar++){ - SQLITE_SKIP_UTF8(z); - } - if( nChar>0 ){ - azChar = contextMalloc(context, ((i64)nChar)*(sizeof(char*)+1)); - if( azChar==0 ){ - return; - } - aLen = (unsigned char*)&azChar[nChar]; - for(z=zCharSet, nChar=0; *z; nChar++){ - azChar[nChar] = (unsigned char *)z; - SQLITE_SKIP_UTF8(z); - aLen[nChar] = (u8)(z - azChar[nChar]); - } - } - } - if( nChar>0 ){ - flags = SQLITE_PTR_TO_INT(sqlite3_user_data(context)); - if( flags & 1 ){ - while( nIn>0 ){ - int len = 0; - for(i=0; i=nChar ) break; - zIn += len; - nIn -= len; - } - } - if( flags & 2 ){ - while( nIn>0 ){ - int len = 0; - for(i=0; i=nChar ) break; - nIn -= len; - } - } - if( zCharSet ){ - sqlite3_free(azChar); - } - } - sqlite3_result_text(context, (char*)zIn, nIn, SQLITE_TRANSIENT); -} - - -/* IMP: R-25361-16150 This function is omitted from SQLite by default. It -** is only available if the SQLITE_SOUNDEX compile-time option is used -** when SQLite is built. -*/ -#ifdef SQLITE_SOUNDEX -/* -** Compute the soundex encoding of a word. -** -** IMP: R-59782-00072 The soundex(X) function returns a string that is the -** soundex encoding of the string X. -*/ -static void soundexFunc( - sqlite3_context *context, - int argc, - sqlite3_value **argv -){ - char zResult[8]; - const u8 *zIn; - int i, j; - static const unsigned char iCode[] = { - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 1, 2, 3, 0, 1, 2, 0, 0, 2, 2, 4, 5, 5, 0, - 1, 2, 6, 2, 3, 0, 1, 0, 2, 0, 2, 0, 0, 0, 0, 0, - 0, 0, 1, 2, 3, 0, 1, 2, 0, 0, 2, 2, 4, 5, 5, 0, - 1, 2, 6, 2, 3, 0, 1, 0, 2, 0, 2, 0, 0, 0, 0, 0, - }; - assert( argc==1 ); - zIn = (u8*)sqlite3_value_text(argv[0]); - if( zIn==0 ) zIn = (u8*)""; - for(i=0; zIn[i] && !sqlite3Isalpha(zIn[i]); i++){} - if( zIn[i] ){ - u8 prevcode = iCode[zIn[i]&0x7f]; - zResult[0] = sqlite3Toupper(zIn[i]); - for(j=1; j<4 && zIn[i]; i++){ - int code = iCode[zIn[i]&0x7f]; - if( code>0 ){ - if( code!=prevcode ){ - prevcode = code; - zResult[j++] = code + '0'; - } - }else{ - prevcode = 0; - } - } - while( j<4 ){ - zResult[j++] = '0'; - } - zResult[j] = 0; - sqlite3_result_text(context, zResult, 4, SQLITE_TRANSIENT); - }else{ - /* IMP: R-64894-50321 The string "?000" is returned if the argument - ** is NULL or contains no ASCII alphabetic characters. */ - sqlite3_result_text(context, "?000", 4, SQLITE_STATIC); - } -} -#endif /* SQLITE_SOUNDEX */ - -#ifndef SQLITE_OMIT_LOAD_EXTENSION -/* -** A function that loads a shared-library extension then returns NULL. -*/ -static void loadExt(sqlite3_context *context, int argc, sqlite3_value **argv){ - const char *zFile = (const char *)sqlite3_value_text(argv[0]); - const char *zProc; - sqlite3 *db = sqlite3_context_db_handle(context); - char *zErrMsg = 0; - - if( argc==2 ){ - zProc = (const char *)sqlite3_value_text(argv[1]); - }else{ - zProc = 0; - } - if( zFile && sqlite3_load_extension(db, zFile, zProc, &zErrMsg) ){ - sqlite3_result_error(context, zErrMsg, -1); - sqlite3_free(zErrMsg); - } -} -#endif - - -/* -** An instance of the following structure holds the context of a -** sum() or avg() aggregate computation. -*/ -typedef struct SumCtx SumCtx; -struct SumCtx { - double rSum; /* Floating point sum */ - i64 iSum; /* Integer sum */ - i64 cnt; /* Number of elements summed */ - u8 overflow; /* True if integer overflow seen */ - u8 approx; /* True if non-integer value was input to the sum */ -}; - -/* -** Routines used to compute the sum, average, and total. -** -** The SUM() function follows the (broken) SQL standard which means -** that it returns NULL if it sums over no inputs. TOTAL returns -** 0.0 in that case. In addition, TOTAL always returns a float where -** SUM might return an integer if it never encounters a floating point -** value. TOTAL never fails, but SUM might through an exception if -** it overflows an integer. -*/ -static void sumStep(sqlite3_context *context, int argc, sqlite3_value **argv){ - SumCtx *p; - int type; - assert( argc==1 ); - UNUSED_PARAMETER(argc); - p = sqlite3_aggregate_context(context, sizeof(*p)); - type = sqlite3_value_numeric_type(argv[0]); - if( p && type!=SQLITE_NULL ){ - p->cnt++; - if( type==SQLITE_INTEGER ){ - i64 v = sqlite3_value_int64(argv[0]); - p->rSum += v; - if( (p->approx|p->overflow)==0 && sqlite3AddInt64(&p->iSum, v) ){ - p->overflow = 1; - } - }else{ - p->rSum += sqlite3_value_double(argv[0]); - p->approx = 1; - } - } -} -static void sumFinalize(sqlite3_context *context){ - SumCtx *p; - p = sqlite3_aggregate_context(context, 0); - if( p && p->cnt>0 ){ - if( p->overflow ){ - sqlite3_result_error(context,"integer overflow",-1); - }else if( p->approx ){ - sqlite3_result_double(context, p->rSum); - }else{ - sqlite3_result_int64(context, p->iSum); - } - } -} -static void avgFinalize(sqlite3_context *context){ - SumCtx *p; - p = sqlite3_aggregate_context(context, 0); - if( p && p->cnt>0 ){ - sqlite3_result_double(context, p->rSum/(double)p->cnt); - } -} -static void totalFinalize(sqlite3_context *context){ - SumCtx *p; - p = sqlite3_aggregate_context(context, 0); - /* (double)0 In case of SQLITE_OMIT_FLOATING_POINT... */ - sqlite3_result_double(context, p ? p->rSum : (double)0); -} - -/* -** The following structure keeps track of state information for the -** count() aggregate function. -*/ -typedef struct CountCtx CountCtx; -struct CountCtx { - i64 n; -}; - -/* -** Routines to implement the count() aggregate function. -*/ -static void countStep(sqlite3_context *context, int argc, sqlite3_value **argv){ - CountCtx *p; - p = sqlite3_aggregate_context(context, sizeof(*p)); - if( (argc==0 || SQLITE_NULL!=sqlite3_value_type(argv[0])) && p ){ - p->n++; - } - -#ifndef SQLITE_OMIT_DEPRECATED - /* The sqlite3_aggregate_count() function is deprecated. But just to make - ** sure it still operates correctly, verify that its count agrees with our - ** internal count when using count(*) and when the total count can be - ** expressed as a 32-bit integer. */ - assert( argc==1 || p==0 || p->n>0x7fffffff - || p->n==sqlite3_aggregate_count(context) ); -#endif -} -static void countFinalize(sqlite3_context *context){ - CountCtx *p; - p = sqlite3_aggregate_context(context, 0); - sqlite3_result_int64(context, p ? p->n : 0); -} - -/* -** Routines to implement min() and max() aggregate functions. -*/ -static void minmaxStep( - sqlite3_context *context, - int NotUsed, - sqlite3_value **argv -){ - Mem *pArg = (Mem *)argv[0]; - Mem *pBest; - UNUSED_PARAMETER(NotUsed); - - if( sqlite3_value_type(argv[0])==SQLITE_NULL ) return; - pBest = (Mem *)sqlite3_aggregate_context(context, sizeof(*pBest)); - if( !pBest ) return; - - if( pBest->flags ){ - int max; - int cmp; - CollSeq *pColl = sqlite3GetFuncCollSeq(context); - /* This step function is used for both the min() and max() aggregates, - ** the only difference between the two being that the sense of the - ** comparison is inverted. For the max() aggregate, the - ** sqlite3_user_data() function returns (void *)-1. For min() it - ** returns (void *)db, where db is the sqlite3* database pointer. - ** Therefore the next statement sets variable 'max' to 1 for the max() - ** aggregate, or 0 for min(). - */ - max = sqlite3_user_data(context)!=0; - cmp = sqlite3MemCompare(pBest, pArg, pColl); - if( (max && cmp<0) || (!max && cmp>0) ){ - sqlite3VdbeMemCopy(pBest, pArg); - } - }else{ - sqlite3VdbeMemCopy(pBest, pArg); - } -} -static void minMaxFinalize(sqlite3_context *context){ - sqlite3_value *pRes; - pRes = (sqlite3_value *)sqlite3_aggregate_context(context, 0); - if( pRes ){ - if( ALWAYS(pRes->flags) ){ - sqlite3_result_value(context, pRes); - } - sqlite3VdbeMemRelease(pRes); - } -} - -/* -** group_concat(EXPR, ?SEPARATOR?) -*/ -static void groupConcatStep( - sqlite3_context *context, - int argc, - sqlite3_value **argv -){ - const char *zVal; - StrAccum *pAccum; - const char *zSep; - int nVal, nSep; - assert( argc==1 || argc==2 ); - if( sqlite3_value_type(argv[0])==SQLITE_NULL ) return; - pAccum = (StrAccum*)sqlite3_aggregate_context(context, sizeof(*pAccum)); - - if( pAccum ){ - sqlite3 *db = sqlite3_context_db_handle(context); - int firstTerm = pAccum->useMalloc==0; - pAccum->useMalloc = 2; - pAccum->mxAlloc = db->aLimit[SQLITE_LIMIT_LENGTH]; - if( !firstTerm ){ - if( argc==2 ){ - zSep = (char*)sqlite3_value_text(argv[1]); - nSep = sqlite3_value_bytes(argv[1]); - }else{ - zSep = ","; - nSep = 1; - } - sqlite3StrAccumAppend(pAccum, zSep, nSep); - } - zVal = (char*)sqlite3_value_text(argv[0]); - nVal = sqlite3_value_bytes(argv[0]); - sqlite3StrAccumAppend(pAccum, zVal, nVal); - } -} -static void groupConcatFinalize(sqlite3_context *context){ - StrAccum *pAccum; - pAccum = sqlite3_aggregate_context(context, 0); - if( pAccum ){ - if( pAccum->tooBig ){ - sqlite3_result_error_toobig(context); - }else if( pAccum->mallocFailed ){ - sqlite3_result_error_nomem(context); - }else{ - sqlite3_result_text(context, sqlite3StrAccumFinish(pAccum), -1, - sqlite3_free); - } - } -} - -/* -** This routine does per-connection function registration. Most -** of the built-in functions above are part of the global function set. -** This routine only deals with those that are not global. -*/ -void sqlite3RegisterBuiltinFunctions(sqlite3 *db){ - int rc = sqlite3_overload_function(db, "MATCH", 2); - assert( rc==SQLITE_NOMEM || rc==SQLITE_OK ); - if( rc==SQLITE_NOMEM ){ - db->mallocFailed = 1; - } -} - -/* -** Set the LIKEOPT flag on the 2-argument function with the given name. -*/ -static void setLikeOptFlag(sqlite3 *db, const char *zName, u8 flagVal){ - FuncDef *pDef; - pDef = sqlite3FindFunction(db, zName, sqlite3Strlen30(zName), - 2, SQLITE_UTF8, 0); - if( ALWAYS(pDef) ){ - pDef->flags = flagVal; - } -} - -/* -** Register the built-in LIKE and GLOB functions. The caseSensitive -** parameter determines whether or not the LIKE operator is case -** sensitive. GLOB is always case sensitive. -*/ -void sqlite3RegisterLikeFunctions(sqlite3 *db, int caseSensitive){ - struct compareInfo *pInfo; - if( caseSensitive ){ - pInfo = (struct compareInfo*)&likeInfoAlt; - }else{ - pInfo = (struct compareInfo*)&likeInfoNorm; - } - sqlite3CreateFunc(db, "like", 2, SQLITE_UTF8, pInfo, likeFunc, 0, 0, 0); - sqlite3CreateFunc(db, "like", 3, SQLITE_UTF8, pInfo, likeFunc, 0, 0, 0); - sqlite3CreateFunc(db, "glob", 2, SQLITE_UTF8, - (struct compareInfo*)&globInfo, likeFunc, 0, 0, 0); - setLikeOptFlag(db, "glob", SQLITE_FUNC_LIKE | SQLITE_FUNC_CASE); - setLikeOptFlag(db, "like", - caseSensitive ? (SQLITE_FUNC_LIKE | SQLITE_FUNC_CASE) : SQLITE_FUNC_LIKE); -} - -/* -** pExpr points to an expression which implements a function. If -** it is appropriate to apply the LIKE optimization to that function -** then set aWc[0] through aWc[2] to the wildcard characters and -** return TRUE. If the function is not a LIKE-style function then -** return FALSE. -*/ -int sqlite3IsLikeFunction(sqlite3 *db, Expr *pExpr, int *pIsNocase, char *aWc){ - FuncDef *pDef; - if( pExpr->op!=TK_FUNCTION - || !pExpr->x.pList - || pExpr->x.pList->nExpr!=2 - ){ - return 0; - } - assert( !ExprHasProperty(pExpr, EP_xIsSelect) ); - pDef = sqlite3FindFunction(db, pExpr->u.zToken, - sqlite3Strlen30(pExpr->u.zToken), - 2, SQLITE_UTF8, 0); - if( NEVER(pDef==0) || (pDef->flags & SQLITE_FUNC_LIKE)==0 ){ - return 0; - } - - /* The memcpy() statement assumes that the wildcard characters are - ** the first three statements in the compareInfo structure. The - ** asserts() that follow verify that assumption - */ - memcpy(aWc, pDef->pUserData, 3); - assert( (char*)&likeInfoAlt == (char*)&likeInfoAlt.matchAll ); - assert( &((char*)&likeInfoAlt)[1] == (char*)&likeInfoAlt.matchOne ); - assert( &((char*)&likeInfoAlt)[2] == (char*)&likeInfoAlt.matchSet ); - *pIsNocase = (pDef->flags & SQLITE_FUNC_CASE)==0; - return 1; -} - -/* -** All all of the FuncDef structures in the aBuiltinFunc[] array above -** to the global function hash table. This occurs at start-time (as -** a consequence of calling sqlite3_initialize()). -** -** After this routine runs -*/ -void sqlite3RegisterGlobalFunctions(void){ - /* - ** The following array holds FuncDef structures for all of the functions - ** defined in this file. - ** - ** The array cannot be constant since changes are made to the - ** FuncDef.pHash elements at start-time. The elements of this array - ** are read-only after initialization is complete. - */ - static SQLITE_WSD FuncDef aBuiltinFunc[] = { - FUNCTION(ltrim, 1, 1, 0, trimFunc ), - FUNCTION(ltrim, 2, 1, 0, trimFunc ), - FUNCTION(rtrim, 1, 2, 0, trimFunc ), - FUNCTION(rtrim, 2, 2, 0, trimFunc ), - FUNCTION(trim, 1, 3, 0, trimFunc ), - FUNCTION(trim, 2, 3, 0, trimFunc ), - FUNCTION(min, -1, 0, 1, minmaxFunc ), - FUNCTION(min, 0, 0, 1, 0 ), - AGGREGATE(min, 1, 0, 1, minmaxStep, minMaxFinalize ), - FUNCTION(max, -1, 1, 1, minmaxFunc ), - FUNCTION(max, 0, 1, 1, 0 ), - AGGREGATE(max, 1, 1, 1, minmaxStep, minMaxFinalize ), - FUNCTION(typeof, 1, 0, 0, typeofFunc ), - FUNCTION(length, 1, 0, 0, lengthFunc ), - FUNCTION(substr, 2, 0, 0, substrFunc ), - FUNCTION(substr, 3, 0, 0, substrFunc ), - FUNCTION(abs, 1, 0, 0, absFunc ), -#ifndef SQLITE_OMIT_FLOATING_POINT - FUNCTION(round, 1, 0, 0, roundFunc ), - FUNCTION(round, 2, 0, 0, roundFunc ), -#endif - FUNCTION(upper, 1, 0, 0, upperFunc ), - FUNCTION(lower, 1, 0, 0, lowerFunc ), - FUNCTION(coalesce, 1, 0, 0, 0 ), - FUNCTION(coalesce, 0, 0, 0, 0 ), -/* FUNCTION(coalesce, -1, 0, 0, ifnullFunc ), */ - {-1,SQLITE_UTF8,SQLITE_FUNC_COALESCE,0,0,ifnullFunc,0,0,"coalesce",0,0}, - FUNCTION(hex, 1, 0, 0, hexFunc ), -/* FUNCTION(ifnull, 2, 0, 0, ifnullFunc ), */ - {2,SQLITE_UTF8,SQLITE_FUNC_COALESCE,0,0,ifnullFunc,0,0,"ifnull",0,0}, - FUNCTION(random, 0, 0, 0, randomFunc ), - FUNCTION(randomblob, 1, 0, 0, randomBlob ), - FUNCTION(nullif, 2, 0, 1, nullifFunc ), - FUNCTION(sqlite_version, 0, 0, 0, versionFunc ), - FUNCTION(sqlite_source_id, 0, 0, 0, sourceidFunc ), - FUNCTION(sqlite_log, 2, 0, 0, errlogFunc ), -#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS - FUNCTION(sqlite_compileoption_used,1, 0, 0, compileoptionusedFunc ), - FUNCTION(sqlite_compileoption_get, 1, 0, 0, compileoptiongetFunc ), -#endif /* SQLITE_OMIT_COMPILEOPTION_DIAGS */ - FUNCTION(quote, 1, 0, 0, quoteFunc ), - FUNCTION(last_insert_rowid, 0, 0, 0, last_insert_rowid), - FUNCTION(changes, 0, 0, 0, changes ), - FUNCTION(total_changes, 0, 0, 0, total_changes ), - FUNCTION(replace, 3, 0, 0, replaceFunc ), - FUNCTION(zeroblob, 1, 0, 0, zeroblobFunc ), - #ifdef SQLITE_SOUNDEX - FUNCTION(soundex, 1, 0, 0, soundexFunc ), - #endif - #ifndef SQLITE_OMIT_LOAD_EXTENSION - FUNCTION(load_extension, 1, 0, 0, loadExt ), - FUNCTION(load_extension, 2, 0, 0, loadExt ), - #endif - AGGREGATE(sum, 1, 0, 0, sumStep, sumFinalize ), - AGGREGATE(total, 1, 0, 0, sumStep, totalFinalize ), - AGGREGATE(avg, 1, 0, 0, sumStep, avgFinalize ), - /* AGGREGATE(count, 0, 0, 0, countStep, countFinalize ), */ - {0,SQLITE_UTF8,SQLITE_FUNC_COUNT,0,0,0,countStep,countFinalize,"count",0,0}, - AGGREGATE(count, 1, 0, 0, countStep, countFinalize ), - AGGREGATE(group_concat, 1, 0, 0, groupConcatStep, groupConcatFinalize), - AGGREGATE(group_concat, 2, 0, 0, groupConcatStep, groupConcatFinalize), - - LIKEFUNC(glob, 2, &globInfo, SQLITE_FUNC_LIKE|SQLITE_FUNC_CASE), - #ifdef SQLITE_CASE_SENSITIVE_LIKE - LIKEFUNC(like, 2, &likeInfoAlt, SQLITE_FUNC_LIKE|SQLITE_FUNC_CASE), - LIKEFUNC(like, 3, &likeInfoAlt, SQLITE_FUNC_LIKE|SQLITE_FUNC_CASE), - #else - LIKEFUNC(like, 2, &likeInfoNorm, SQLITE_FUNC_LIKE), - LIKEFUNC(like, 3, &likeInfoNorm, SQLITE_FUNC_LIKE), - #endif - }; - - int i; - FuncDefHash *pHash = &GLOBAL(FuncDefHash, sqlite3GlobalFunctions); - FuncDef *aFunc = (FuncDef*)&GLOBAL(FuncDef, aBuiltinFunc); - - for(i=0; i? */ - - 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x02, /* 40..47 @ABCDEFG */ - 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, /* 48..4f HIJKLMNO */ - 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, /* 50..57 PQRSTUVW */ - 0x02, 0x02, 0x02, 0x00, 0x00, 0x00, 0x00, 0x40, /* 58..5f XYZ[\]^_ */ - 0x00, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x22, /* 60..67 `abcdefg */ - 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, /* 68..6f hijklmno */ - 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, /* 70..77 pqrstuvw */ - 0x22, 0x22, 0x22, 0x00, 0x00, 0x00, 0x00, 0x00, /* 78..7f xyz{|}~. */ - - 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* 80..87 ........ */ - 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* 88..8f ........ */ - 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* 90..97 ........ */ - 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* 98..9f ........ */ - 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* a0..a7 ........ */ - 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* a8..af ........ */ - 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* b0..b7 ........ */ - 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* b8..bf ........ */ - - 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* c0..c7 ........ */ - 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* c8..cf ........ */ - 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* d0..d7 ........ */ - 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* d8..df ........ */ - 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* e0..e7 ........ */ - 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* e8..ef ........ */ - 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, /* f0..f7 ........ */ - 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40 /* f8..ff ........ */ -}; -#endif - -#ifndef SQLITE_USE_URI -# define SQLITE_USE_URI 0 -#endif - -/* -** The following singleton contains the global configuration for -** the SQLite library. -*/ -SQLITE_WSD struct Sqlite3Config sqlite3Config = { - SQLITE_DEFAULT_MEMSTATUS, /* bMemstat */ - 1, /* bCoreMutex */ - SQLITE_THREADSAFE==1, /* bFullMutex */ - SQLITE_USE_URI, /* bOpenUri */ - 0x7ffffffe, /* mxStrlen */ - 128, /* szLookaside */ - 500, /* nLookaside */ - {0,0,0,0,0,0,0,0}, /* m */ - {0,0,0,0,0,0,0,0,0}, /* mutex */ - {0,0,0,0,0,0,0,0,0,0,0}, /* pcache */ - (void*)0, /* pHeap */ - 0, /* nHeap */ - 0, 0, /* mnHeap, mxHeap */ - (void*)0, /* pScratch */ - 0, /* szScratch */ - 0, /* nScratch */ - (void*)0, /* pPage */ - 0, /* szPage */ - 0, /* nPage */ - 0, /* mxParserStack */ - 0, /* sharedCacheEnabled */ - /* All the rest should always be initialized to zero */ - 0, /* isInit */ - 0, /* inProgress */ - 0, /* isMutexInit */ - 0, /* isMallocInit */ - 0, /* isPCacheInit */ - 0, /* pInitMutex */ - 0, /* nRefInitMutex */ - 0, /* xLog */ - 0, /* pLogArg */ - 0, /* bLocaltimeFault */ -}; - - -/* -** Hash table for global functions - functions common to all -** database connections. After initialization, this table is -** read-only. -*/ -SQLITE_WSD FuncDefHash sqlite3GlobalFunctions; - -/* -** Constant tokens for values 0 and 1. -*/ -const Token sqlite3IntTokens[] = { - { "0", 1 }, - { "1", 1 } -}; - - -/* -** The value of the "pending" byte must be 0x40000000 (1 byte past the -** 1-gibabyte boundary) in a compatible database. SQLite never uses -** the database page that contains the pending byte. It never attempts -** to read or write that page. The pending byte page is set assign -** for use by the VFS layers as space for managing file locks. -** -** During testing, it is often desirable to move the pending byte to -** a different position in the file. This allows code that has to -** deal with the pending byte to run on files that are much smaller -** than 1 GiB. The sqlite3_test_control() interface can be used to -** move the pending byte. -** -** IMPORTANT: Changing the pending byte to any value other than -** 0x40000000 results in an incompatible database file format! -** Changing the pending byte during operating results in undefined -** and dileterious behavior. -*/ -#ifndef SQLITE_OMIT_WSD -int sqlite3PendingByte = 0x40000000; -#endif - -#include "opcodes.h" -/* -** Properties of opcodes. The OPFLG_INITIALIZER macro is -** created by mkopcodeh.awk during compilation. Data is obtained -** from the comments following the "case OP_xxxx:" statements in -** the vdbe.c file. -*/ -const unsigned char sqlite3OpcodeProperty[] = OPFLG_INITIALIZER; diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/hash.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/hash.c deleted file mode 100644 index ef1700c576..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/hash.c +++ /dev/null @@ -1,277 +0,0 @@ -/* -** 2001 September 22 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This is the implementation of generic hash-tables -** used in SQLite. -*/ -#include "sqliteInt.h" -#include - -/* Turn bulk memory into a hash table object by initializing the -** fields of the Hash structure. -** -** "pNew" is a pointer to the hash table that is to be initialized. -*/ -void sqlite3HashInit(Hash *pNew){ - assert( pNew!=0 ); - pNew->first = 0; - pNew->count = 0; - pNew->htsize = 0; - pNew->ht = 0; -} - -/* Remove all entries from a hash table. Reclaim all memory. -** Call this routine to delete a hash table or to reset a hash table -** to the empty state. -*/ -void sqlite3HashClear(Hash *pH){ - HashElem *elem; /* For looping over all elements of the table */ - - assert( pH!=0 ); - elem = pH->first; - pH->first = 0; - sqlite3_free(pH->ht); - pH->ht = 0; - pH->htsize = 0; - while( elem ){ - HashElem *next_elem = elem->next; - sqlite3_free(elem); - elem = next_elem; - } - pH->count = 0; -} - -/* -** The hashing function. -*/ -static unsigned int strHash(const char *z, int nKey){ - int h = 0; - assert( nKey>=0 ); - while( nKey > 0 ){ - h = (h<<3) ^ h ^ sqlite3UpperToLower[(unsigned char)*z++]; - nKey--; - } - return h; -} - - -/* Link pNew element into the hash table pH. If pEntry!=0 then also -** insert pNew into the pEntry hash bucket. -*/ -static void insertElement( - Hash *pH, /* The complete hash table */ - struct _ht *pEntry, /* The entry into which pNew is inserted */ - HashElem *pNew /* The element to be inserted */ -){ - HashElem *pHead; /* First element already in pEntry */ - if( pEntry ){ - pHead = pEntry->count ? pEntry->chain : 0; - pEntry->count++; - pEntry->chain = pNew; - }else{ - pHead = 0; - } - if( pHead ){ - pNew->next = pHead; - pNew->prev = pHead->prev; - if( pHead->prev ){ pHead->prev->next = pNew; } - else { pH->first = pNew; } - pHead->prev = pNew; - }else{ - pNew->next = pH->first; - if( pH->first ){ pH->first->prev = pNew; } - pNew->prev = 0; - pH->first = pNew; - } -} - - -/* Resize the hash table so that it cantains "new_size" buckets. -** -** The hash table might fail to resize if sqlite3_malloc() fails or -** if the new size is the same as the prior size. -** Return TRUE if the resize occurs and false if not. -*/ -static int rehash(Hash *pH, unsigned int new_size){ - struct _ht *new_ht; /* The new hash table */ - HashElem *elem, *next_elem; /* For looping over existing elements */ - -#if SQLITE_MALLOC_SOFT_LIMIT>0 - if( new_size*sizeof(struct _ht)>SQLITE_MALLOC_SOFT_LIMIT ){ - new_size = SQLITE_MALLOC_SOFT_LIMIT/sizeof(struct _ht); - } - if( new_size==pH->htsize ) return 0; -#endif - - /* The inability to allocates space for a larger hash table is - ** a performance hit but it is not a fatal error. So mark the - ** allocation as a benign. - */ - sqlite3BeginBenignMalloc(); - new_ht = (struct _ht *)sqlite3Malloc( new_size*sizeof(struct _ht) ); - sqlite3EndBenignMalloc(); - - if( new_ht==0 ) return 0; - sqlite3_free(pH->ht); - pH->ht = new_ht; - pH->htsize = new_size = sqlite3MallocSize(new_ht)/sizeof(struct _ht); - memset(new_ht, 0, new_size*sizeof(struct _ht)); - for(elem=pH->first, pH->first=0; elem; elem = next_elem){ - unsigned int h = strHash(elem->pKey, elem->nKey) % new_size; - next_elem = elem->next; - insertElement(pH, &new_ht[h], elem); - } - return 1; -} - -/* This function (for internal use only) locates an element in an -** hash table that matches the given key. The hash for this key has -** already been computed and is passed as the 4th parameter. -*/ -static HashElem *findElementGivenHash( - const Hash *pH, /* The pH to be searched */ - const char *pKey, /* The key we are searching for */ - int nKey, /* Bytes in key (not counting zero terminator) */ - unsigned int h /* The hash for this key. */ -){ - HashElem *elem; /* Used to loop thru the element list */ - int count; /* Number of elements left to test */ - - if( pH->ht ){ - struct _ht *pEntry = &pH->ht[h]; - elem = pEntry->chain; - count = pEntry->count; - }else{ - elem = pH->first; - count = pH->count; - } - while( count-- && ALWAYS(elem) ){ - if( elem->nKey==nKey && sqlite3StrNICmp(elem->pKey,pKey,nKey)==0 ){ - return elem; - } - elem = elem->next; - } - return 0; -} - -/* Remove a single entry from the hash table given a pointer to that -** element and a hash on the element's key. -*/ -static void removeElementGivenHash( - Hash *pH, /* The pH containing "elem" */ - HashElem* elem, /* The element to be removed from the pH */ - unsigned int h /* Hash value for the element */ -){ - struct _ht *pEntry; - if( elem->prev ){ - elem->prev->next = elem->next; - }else{ - pH->first = elem->next; - } - if( elem->next ){ - elem->next->prev = elem->prev; - } - if( pH->ht ){ - pEntry = &pH->ht[h]; - if( pEntry->chain==elem ){ - pEntry->chain = elem->next; - } - pEntry->count--; - assert( pEntry->count>=0 ); - } - sqlite3_free( elem ); - pH->count--; - if( pH->count<=0 ){ - assert( pH->first==0 ); - assert( pH->count==0 ); - sqlite3HashClear(pH); - } -} - -/* Attempt to locate an element of the hash table pH with a key -** that matches pKey,nKey. Return the data for this element if it is -** found, or NULL if there is no match. -*/ -void *sqlite3HashFind(const Hash *pH, const char *pKey, int nKey){ - HashElem *elem; /* The element that matches key */ - unsigned int h; /* A hash on key */ - - assert( pH!=0 ); - assert( pKey!=0 ); - assert( nKey>=0 ); - if( pH->ht ){ - h = strHash(pKey, nKey) % pH->htsize; - }else{ - h = 0; - } - elem = findElementGivenHash(pH, pKey, nKey, h); - return elem ? elem->data : 0; -} - -/* Insert an element into the hash table pH. The key is pKey,nKey -** and the data is "data". -** -** If no element exists with a matching key, then a new -** element is created and NULL is returned. -** -** If another element already exists with the same key, then the -** new data replaces the old data and the old data is returned. -** The key is not copied in this instance. If a malloc fails, then -** the new data is returned and the hash table is unchanged. -** -** If the "data" parameter to this function is NULL, then the -** element corresponding to "key" is removed from the hash table. -*/ -void *sqlite3HashInsert(Hash *pH, const char *pKey, int nKey, void *data){ - unsigned int h; /* the hash of the key modulo hash table size */ - HashElem *elem; /* Used to loop thru the element list */ - HashElem *new_elem; /* New element added to the pH */ - - assert( pH!=0 ); - assert( pKey!=0 ); - assert( nKey>=0 ); - if( pH->htsize ){ - h = strHash(pKey, nKey) % pH->htsize; - }else{ - h = 0; - } - elem = findElementGivenHash(pH,pKey,nKey,h); - if( elem ){ - void *old_data = elem->data; - if( data==0 ){ - removeElementGivenHash(pH,elem,h); - }else{ - elem->data = data; - elem->pKey = pKey; - assert(nKey==elem->nKey); - } - return old_data; - } - if( data==0 ) return 0; - new_elem = (HashElem*)sqlite3Malloc( sizeof(HashElem) ); - if( new_elem==0 ) return data; - new_elem->pKey = pKey; - new_elem->nKey = nKey; - new_elem->data = data; - pH->count++; - if( pH->count>=10 && pH->count > 2*pH->htsize ){ - if( rehash(pH, pH->count*2) ){ - assert( pH->htsize>0 ); - h = strHash(pKey, nKey) % pH->htsize; - } - } - if( pH->ht ){ - insertElement(pH, &pH->ht[h], new_elem); - }else{ - insertElement(pH, 0, new_elem); - } - return 0; -} diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/hash.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/hash.h deleted file mode 100644 index be04b71e25..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/hash.h +++ /dev/null @@ -1,96 +0,0 @@ -/* -** 2001 September 22 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This is the header file for the generic hash-table implemenation -** used in SQLite. -*/ -#ifndef _SQLITE_HASH_H_ -#define _SQLITE_HASH_H_ - -/* Forward declarations of structures. */ -typedef struct Hash Hash; -typedef struct HashElem HashElem; - -/* A complete hash table is an instance of the following structure. -** The internals of this structure are intended to be opaque -- client -** code should not attempt to access or modify the fields of this structure -** directly. Change this structure only by using the routines below. -** However, some of the "procedures" and "functions" for modifying and -** accessing this structure are really macros, so we can't really make -** this structure opaque. -** -** All elements of the hash table are on a single doubly-linked list. -** Hash.first points to the head of this list. -** -** There are Hash.htsize buckets. Each bucket points to a spot in -** the global doubly-linked list. The contents of the bucket are the -** element pointed to plus the next _ht.count-1 elements in the list. -** -** Hash.htsize and Hash.ht may be zero. In that case lookup is done -** by a linear search of the global list. For small tables, the -** Hash.ht table is never allocated because if there are few elements -** in the table, it is faster to do a linear search than to manage -** the hash table. -*/ -struct Hash { - unsigned int htsize; /* Number of buckets in the hash table */ - unsigned int count; /* Number of entries in this table */ - HashElem *first; /* The first element of the array */ - struct _ht { /* the hash table */ - int count; /* Number of entries with this hash */ - HashElem *chain; /* Pointer to first entry with this hash */ - } *ht; -}; - -/* Each element in the hash table is an instance of the following -** structure. All elements are stored on a single doubly-linked list. -** -** Again, this structure is intended to be opaque, but it can't really -** be opaque because it is used by macros. -*/ -struct HashElem { - HashElem *next, *prev; /* Next and previous elements in the table */ - void *data; /* Data associated with this element */ - const char *pKey; int nKey; /* Key associated with this element */ -}; - -/* -** Access routines. To delete, insert a NULL pointer. -*/ -void sqlite3HashInit(Hash*); -void *sqlite3HashInsert(Hash*, const char *pKey, int nKey, void *pData); -void *sqlite3HashFind(const Hash*, const char *pKey, int nKey); -void sqlite3HashClear(Hash*); - -/* -** Macros for looping over all elements of a hash table. The idiom is -** like this: -** -** Hash h; -** HashElem *p; -** ... -** for(p=sqliteHashFirst(&h); p; p=sqliteHashNext(p)){ -** SomeStructure *pData = sqliteHashData(p); -** // do something with pData -** } -*/ -#define sqliteHashFirst(H) ((H)->first) -#define sqliteHashNext(E) ((E)->next) -#define sqliteHashData(E) ((E)->data) -/* #define sqliteHashKey(E) ((E)->pKey) // NOT USED */ -/* #define sqliteHashKeysize(E) ((E)->nKey) // NOT USED */ - -/* -** Number of entries in a hash table -*/ -/* #define sqliteHashCount(H) ((H)->count) // NOT USED */ - -#endif /* _SQLITE_HASH_H_ */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/hwtime.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/hwtime.h deleted file mode 100644 index 5f583ab937..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/hwtime.h +++ /dev/null @@ -1,85 +0,0 @@ -/* -** 2008 May 27 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This file contains inline asm code for retrieving "high-performance" -** counters for x86 class CPUs. -*/ -#ifndef _HWTIME_H_ -#define _HWTIME_H_ - -/* -** The following routine only works on pentium-class (or newer) processors. -** It uses the RDTSC opcode to read the cycle count value out of the -** processor and returns that value. This can be used for high-res -** profiling. -*/ -#if (defined(__GNUC__) || defined(_MSC_VER)) && \ - (defined(i386) || defined(__i386__) || defined(_M_IX86)) - - #if defined(__GNUC__) - - __inline__ sqlite_uint64 sqlite3Hwtime(void){ - unsigned int lo, hi; - __asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi)); - return (sqlite_uint64)hi << 32 | lo; - } - - #elif defined(_MSC_VER) - - __declspec(naked) __inline sqlite_uint64 __cdecl sqlite3Hwtime(void){ - __asm { - rdtsc - ret ; return value at EDX:EAX - } - } - - #endif - -#elif (defined(__GNUC__) && defined(__x86_64__)) - - __inline__ sqlite_uint64 sqlite3Hwtime(void){ - unsigned long val; - __asm__ __volatile__ ("rdtsc" : "=A" (val)); - return val; - } - -#elif (defined(__GNUC__) && defined(__ppc__)) - - __inline__ sqlite_uint64 sqlite3Hwtime(void){ - unsigned long long retval; - unsigned long junk; - __asm__ __volatile__ ("\n\ - 1: mftbu %1\n\ - mftb %L0\n\ - mftbu %0\n\ - cmpw %0,%1\n\ - bne 1b" - : "=r" (retval), "=r" (junk)); - return retval; - } - -#else - - #error Need implementation of sqlite3Hwtime() for your platform. - - /* - ** To compile without implementing sqlite3Hwtime() for your platform, - ** you can remove the above #error and use the following - ** stub function. You will lose timing support for many - ** of the debugging and testing utilities, but it should at - ** least compile and run. - */ - sqlite_uint64 sqlite3Hwtime(void){ return ((sqlite_uint64)0); } - -#endif - -#endif /* !defined(_HWTIME_H_) */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/insert.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/insert.c deleted file mode 100644 index 04081c2a3e..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/insert.c +++ /dev/null @@ -1,1846 +0,0 @@ -/* -** 2001 September 15 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file contains C code routines that are called by the parser -** to handle INSERT statements in SQLite. -*/ -#include "sqliteInt.h" - -/* -** Generate code that will open a table for reading. -*/ -void sqlite3OpenTable( - Parse *p, /* Generate code into this VDBE */ - int iCur, /* The cursor number of the table */ - int iDb, /* The database index in sqlite3.aDb[] */ - Table *pTab, /* The table to be opened */ - int opcode /* OP_OpenRead or OP_OpenWrite */ -){ - Vdbe *v; - if( IsVirtual(pTab) ) return; - v = sqlite3GetVdbe(p); - assert( opcode==OP_OpenWrite || opcode==OP_OpenRead ); - sqlite3TableLock(p, iDb, pTab->tnum, (opcode==OP_OpenWrite)?1:0, pTab->zName); - sqlite3VdbeAddOp3(v, opcode, iCur, pTab->tnum, iDb); - sqlite3VdbeChangeP4(v, -1, SQLITE_INT_TO_PTR(pTab->nCol), P4_INT32); - VdbeComment((v, "%s", pTab->zName)); -} - -/* -** Return a pointer to the column affinity string associated with index -** pIdx. A column affinity string has one character for each column in -** the table, according to the affinity of the column: -** -** Character Column affinity -** ------------------------------ -** 'a' TEXT -** 'b' NONE -** 'c' NUMERIC -** 'd' INTEGER -** 'e' REAL -** -** An extra 'b' is appended to the end of the string to cover the -** rowid that appears as the last column in every index. -** -** Memory for the buffer containing the column index affinity string -** is managed along with the rest of the Index structure. It will be -** released when sqlite3DeleteIndex() is called. -*/ -const char *sqlite3IndexAffinityStr(Vdbe *v, Index *pIdx){ - if( !pIdx->zColAff ){ - /* The first time a column affinity string for a particular index is - ** required, it is allocated and populated here. It is then stored as - ** a member of the Index structure for subsequent use. - ** - ** The column affinity string will eventually be deleted by - ** sqliteDeleteIndex() when the Index structure itself is cleaned - ** up. - */ - int n; - Table *pTab = pIdx->pTable; - sqlite3 *db = sqlite3VdbeDb(v); - pIdx->zColAff = (char *)sqlite3DbMallocRaw(0, pIdx->nColumn+2); - if( !pIdx->zColAff ){ - db->mallocFailed = 1; - return 0; - } - for(n=0; nnColumn; n++){ - pIdx->zColAff[n] = pTab->aCol[pIdx->aiColumn[n]].affinity; - } - pIdx->zColAff[n++] = SQLITE_AFF_NONE; - pIdx->zColAff[n] = 0; - } - - return pIdx->zColAff; -} - -/* -** Set P4 of the most recently inserted opcode to a column affinity -** string for table pTab. A column affinity string has one character -** for each column indexed by the index, according to the affinity of the -** column: -** -** Character Column affinity -** ------------------------------ -** 'a' TEXT -** 'b' NONE -** 'c' NUMERIC -** 'd' INTEGER -** 'e' REAL -*/ -void sqlite3TableAffinityStr(Vdbe *v, Table *pTab){ - /* The first time a column affinity string for a particular table - ** is required, it is allocated and populated here. It is then - ** stored as a member of the Table structure for subsequent use. - ** - ** The column affinity string will eventually be deleted by - ** sqlite3DeleteTable() when the Table structure itself is cleaned up. - */ - if( !pTab->zColAff ){ - char *zColAff; - int i; - sqlite3 *db = sqlite3VdbeDb(v); - - zColAff = (char *)sqlite3DbMallocRaw(0, pTab->nCol+1); - if( !zColAff ){ - db->mallocFailed = 1; - return; - } - - for(i=0; inCol; i++){ - zColAff[i] = pTab->aCol[i].affinity; - } - zColAff[pTab->nCol] = '\0'; - - pTab->zColAff = zColAff; - } - - sqlite3VdbeChangeP4(v, -1, pTab->zColAff, P4_TRANSIENT); -} - -/* -** Return non-zero if the table pTab in database iDb or any of its indices -** have been opened at any point in the VDBE program beginning at location -** iStartAddr throught the end of the program. This is used to see if -** a statement of the form "INSERT INTO SELECT ..." can -** run without using temporary table for the results of the SELECT. -*/ -static int readsTable(Parse *p, int iStartAddr, int iDb, Table *pTab){ - Vdbe *v = sqlite3GetVdbe(p); - int i; - int iEnd = sqlite3VdbeCurrentAddr(v); -#ifndef SQLITE_OMIT_VIRTUALTABLE - VTable *pVTab = IsVirtual(pTab) ? sqlite3GetVTable(p->db, pTab) : 0; -#endif - - for(i=iStartAddr; iopcode==OP_OpenRead && pOp->p3==iDb ){ - Index *pIndex; - int tnum = pOp->p2; - if( tnum==pTab->tnum ){ - return 1; - } - for(pIndex=pTab->pIndex; pIndex; pIndex=pIndex->pNext){ - if( tnum==pIndex->tnum ){ - return 1; - } - } - } -#ifndef SQLITE_OMIT_VIRTUALTABLE - if( pOp->opcode==OP_VOpen && pOp->p4.pVtab==pVTab ){ - assert( pOp->p4.pVtab!=0 ); - assert( pOp->p4type==P4_VTAB ); - return 1; - } -#endif - } - return 0; -} - -#ifndef SQLITE_OMIT_AUTOINCREMENT -/* -** Locate or create an AutoincInfo structure associated with table pTab -** which is in database iDb. Return the register number for the register -** that holds the maximum rowid. -** -** There is at most one AutoincInfo structure per table even if the -** same table is autoincremented multiple times due to inserts within -** triggers. A new AutoincInfo structure is created if this is the -** first use of table pTab. On 2nd and subsequent uses, the original -** AutoincInfo structure is used. -** -** Three memory locations are allocated: -** -** (1) Register to hold the name of the pTab table. -** (2) Register to hold the maximum ROWID of pTab. -** (3) Register to hold the rowid in sqlite_sequence of pTab -** -** The 2nd register is the one that is returned. That is all the -** insert routine needs to know about. -*/ -static int autoIncBegin( - Parse *pParse, /* Parsing context */ - int iDb, /* Index of the database holding pTab */ - Table *pTab /* The table we are writing to */ -){ - int memId = 0; /* Register holding maximum rowid */ - if( pTab->tabFlags & TF_Autoincrement ){ - Parse *pToplevel = sqlite3ParseToplevel(pParse); - AutoincInfo *pInfo; - - pInfo = pToplevel->pAinc; - while( pInfo && pInfo->pTab!=pTab ){ pInfo = pInfo->pNext; } - if( pInfo==0 ){ - pInfo = sqlite3DbMallocRaw(pParse->db, sizeof(*pInfo)); - if( pInfo==0 ) return 0; - pInfo->pNext = pToplevel->pAinc; - pToplevel->pAinc = pInfo; - pInfo->pTab = pTab; - pInfo->iDb = iDb; - pToplevel->nMem++; /* Register to hold name of table */ - pInfo->regCtr = ++pToplevel->nMem; /* Max rowid register */ - pToplevel->nMem++; /* Rowid in sqlite_sequence */ - } - memId = pInfo->regCtr; - } - return memId; -} - -/* -** This routine generates code that will initialize all of the -** register used by the autoincrement tracker. -*/ -void sqlite3AutoincrementBegin(Parse *pParse){ - AutoincInfo *p; /* Information about an AUTOINCREMENT */ - sqlite3 *db = pParse->db; /* The database connection */ - Db *pDb; /* Database only autoinc table */ - int memId; /* Register holding max rowid */ - int addr; /* A VDBE address */ - Vdbe *v = pParse->pVdbe; /* VDBE under construction */ - - /* This routine is never called during trigger-generation. It is - ** only called from the top-level */ - assert( pParse->pTriggerTab==0 ); - assert( pParse==sqlite3ParseToplevel(pParse) ); - - assert( v ); /* We failed long ago if this is not so */ - for(p = pParse->pAinc; p; p = p->pNext){ - pDb = &db->aDb[p->iDb]; - memId = p->regCtr; - assert( sqlite3SchemaMutexHeld(db, 0, pDb->pSchema) ); - sqlite3OpenTable(pParse, 0, p->iDb, pDb->pSchema->pSeqTab, OP_OpenRead); - addr = sqlite3VdbeCurrentAddr(v); - sqlite3VdbeAddOp4(v, OP_String8, 0, memId-1, 0, p->pTab->zName, 0); - sqlite3VdbeAddOp2(v, OP_Rewind, 0, addr+9); - sqlite3VdbeAddOp3(v, OP_Column, 0, 0, memId); - sqlite3VdbeAddOp3(v, OP_Ne, memId-1, addr+7, memId); - sqlite3VdbeChangeP5(v, SQLITE_JUMPIFNULL); - sqlite3VdbeAddOp2(v, OP_Rowid, 0, memId+1); - sqlite3VdbeAddOp3(v, OP_Column, 0, 1, memId); - sqlite3VdbeAddOp2(v, OP_Goto, 0, addr+9); - sqlite3VdbeAddOp2(v, OP_Next, 0, addr+2); - sqlite3VdbeAddOp2(v, OP_Integer, 0, memId); - sqlite3VdbeAddOp0(v, OP_Close); - } -} - -/* -** Update the maximum rowid for an autoincrement calculation. -** -** This routine should be called when the top of the stack holds a -** new rowid that is about to be inserted. If that new rowid is -** larger than the maximum rowid in the memId memory cell, then the -** memory cell is updated. The stack is unchanged. -*/ -static void autoIncStep(Parse *pParse, int memId, int regRowid){ - if( memId>0 ){ - sqlite3VdbeAddOp2(pParse->pVdbe, OP_MemMax, memId, regRowid); - } -} - -/* -** This routine generates the code needed to write autoincrement -** maximum rowid values back into the sqlite_sequence register. -** Every statement that might do an INSERT into an autoincrement -** table (either directly or through triggers) needs to call this -** routine just before the "exit" code. -*/ -void sqlite3AutoincrementEnd(Parse *pParse){ - AutoincInfo *p; - Vdbe *v = pParse->pVdbe; - sqlite3 *db = pParse->db; - - assert( v ); - for(p = pParse->pAinc; p; p = p->pNext){ - Db *pDb = &db->aDb[p->iDb]; - int j1, j2, j3, j4, j5; - int iRec; - int memId = p->regCtr; - - iRec = sqlite3GetTempReg(pParse); - assert( sqlite3SchemaMutexHeld(db, 0, pDb->pSchema) ); - sqlite3OpenTable(pParse, 0, p->iDb, pDb->pSchema->pSeqTab, OP_OpenWrite); - j1 = sqlite3VdbeAddOp1(v, OP_NotNull, memId+1); - j2 = sqlite3VdbeAddOp0(v, OP_Rewind); - j3 = sqlite3VdbeAddOp3(v, OP_Column, 0, 0, iRec); - j4 = sqlite3VdbeAddOp3(v, OP_Eq, memId-1, 0, iRec); - sqlite3VdbeAddOp2(v, OP_Next, 0, j3); - sqlite3VdbeJumpHere(v, j2); - sqlite3VdbeAddOp2(v, OP_NewRowid, 0, memId+1); - j5 = sqlite3VdbeAddOp0(v, OP_Goto); - sqlite3VdbeJumpHere(v, j4); - sqlite3VdbeAddOp2(v, OP_Rowid, 0, memId+1); - sqlite3VdbeJumpHere(v, j1); - sqlite3VdbeJumpHere(v, j5); - sqlite3VdbeAddOp3(v, OP_MakeRecord, memId-1, 2, iRec); - sqlite3VdbeAddOp3(v, OP_Insert, 0, iRec, memId+1); - sqlite3VdbeChangeP5(v, OPFLAG_APPEND); - sqlite3VdbeAddOp0(v, OP_Close); - sqlite3ReleaseTempReg(pParse, iRec); - } -} -#else -/* -** If SQLITE_OMIT_AUTOINCREMENT is defined, then the three routines -** above are all no-ops -*/ -# define autoIncBegin(A,B,C) (0) -# define autoIncStep(A,B,C) -#endif /* SQLITE_OMIT_AUTOINCREMENT */ - - -/* Forward declaration */ -static int xferOptimization( - Parse *pParse, /* Parser context */ - Table *pDest, /* The table we are inserting into */ - Select *pSelect, /* A SELECT statement to use as the data source */ - int onError, /* How to handle constraint errors */ - int iDbDest /* The database of pDest */ -); - -/* -** This routine is call to handle SQL of the following forms: -** -** insert into TABLE (IDLIST) values(EXPRLIST) -** insert into TABLE (IDLIST) select -** -** The IDLIST following the table name is always optional. If omitted, -** then a list of all columns for the table is substituted. The IDLIST -** appears in the pColumn parameter. pColumn is NULL if IDLIST is omitted. -** -** The pList parameter holds EXPRLIST in the first form of the INSERT -** statement above, and pSelect is NULL. For the second form, pList is -** NULL and pSelect is a pointer to the select statement used to generate -** data for the insert. -** -** The code generated follows one of four templates. For a simple -** select with data coming from a VALUES clause, the code executes -** once straight down through. Pseudo-code follows (we call this -** the "1st template"): -** -** open write cursor to
and its indices -** puts VALUES clause expressions onto the stack -** write the resulting record into
-** cleanup -** -** The three remaining templates assume the statement is of the form -** -** INSERT INTO
SELECT ... -** -** If the SELECT clause is of the restricted form "SELECT * FROM " - -** in other words if the SELECT pulls all columns from a single table -** and there is no WHERE or LIMIT or GROUP BY or ORDER BY clauses, and -** if and are distinct tables but have identical -** schemas, including all the same indices, then a special optimization -** is invoked that copies raw records from over to . -** See the xferOptimization() function for the implementation of this -** template. This is the 2nd template. -** -** open a write cursor to
-** open read cursor on -** transfer all records in over to
-** close cursors -** foreach index on
-** open a write cursor on the
index -** open a read cursor on the corresponding index -** transfer all records from the read to the write cursors -** close cursors -** end foreach -** -** The 3rd template is for when the second template does not apply -** and the SELECT clause does not read from
at any time. -** The generated code follows this template: -** -** EOF <- 0 -** X <- A -** goto B -** A: setup for the SELECT -** loop over the rows in the SELECT -** load values into registers R..R+n -** yield X -** end loop -** cleanup after the SELECT -** EOF <- 1 -** yield X -** goto A -** B: open write cursor to
and its indices -** C: yield X -** if EOF goto D -** insert the select result into
from R..R+n -** goto C -** D: cleanup -** -** The 4th template is used if the insert statement takes its -** values from a SELECT but the data is being inserted into a table -** that is also read as part of the SELECT. In the third form, -** we have to use a intermediate table to store the results of -** the select. The template is like this: -** -** EOF <- 0 -** X <- A -** goto B -** A: setup for the SELECT -** loop over the tables in the SELECT -** load value into register R..R+n -** yield X -** end loop -** cleanup after the SELECT -** EOF <- 1 -** yield X -** halt-error -** B: open temp table -** L: yield X -** if EOF goto M -** insert row from R..R+n into temp table -** goto L -** M: open write cursor to
and its indices -** rewind temp table -** C: loop over rows of intermediate table -** transfer values form intermediate table into
-** end loop -** D: cleanup -*/ -void sqlite3Insert( - Parse *pParse, /* Parser context */ - SrcList *pTabList, /* Name of table into which we are inserting */ - ExprList *pList, /* List of values to be inserted */ - Select *pSelect, /* A SELECT statement to use as the data source */ - IdList *pColumn, /* Column names corresponding to IDLIST. */ - int onError /* How to handle constraint errors */ -){ - sqlite3 *db; /* The main database structure */ - Table *pTab; /* The table to insert into. aka TABLE */ - char *zTab; /* Name of the table into which we are inserting */ - const char *zDb; /* Name of the database holding this table */ - int i, j, idx; /* Loop counters */ - Vdbe *v; /* Generate code into this virtual machine */ - Index *pIdx; /* For looping over indices of the table */ - int nColumn; /* Number of columns in the data */ - int nHidden = 0; /* Number of hidden columns if TABLE is virtual */ - int baseCur = 0; /* VDBE Cursor number for pTab */ - int keyColumn = -1; /* Column that is the INTEGER PRIMARY KEY */ - int endOfLoop; /* Label for the end of the insertion loop */ - int useTempTable = 0; /* Store SELECT results in intermediate table */ - int srcTab = 0; /* Data comes from this temporary cursor if >=0 */ - int addrInsTop = 0; /* Jump to label "D" */ - int addrCont = 0; /* Top of insert loop. Label "C" in templates 3 and 4 */ - int addrSelect = 0; /* Address of coroutine that implements the SELECT */ - SelectDest dest; /* Destination for SELECT on rhs of INSERT */ - int iDb; /* Index of database holding TABLE */ - Db *pDb; /* The database containing table being inserted into */ - int appendFlag = 0; /* True if the insert is likely to be an append */ - - /* Register allocations */ - int regFromSelect = 0;/* Base register for data coming from SELECT */ - int regAutoinc = 0; /* Register holding the AUTOINCREMENT counter */ - int regRowCount = 0; /* Memory cell used for the row counter */ - int regIns; /* Block of regs holding rowid+data being inserted */ - int regRowid; /* registers holding insert rowid */ - int regData; /* register holding first column to insert */ - int regEof = 0; /* Register recording end of SELECT data */ - int *aRegIdx = 0; /* One register allocated to each index */ - -#ifndef SQLITE_OMIT_TRIGGER - int isView; /* True if attempting to insert into a view */ - Trigger *pTrigger; /* List of triggers on pTab, if required */ - int tmask; /* Mask of trigger times */ -#endif - - db = pParse->db; - memset(&dest, 0, sizeof(dest)); - if( pParse->nErr || db->mallocFailed ){ - goto insert_cleanup; - } - - /* Locate the table into which we will be inserting new information. - */ - assert( pTabList->nSrc==1 ); - zTab = pTabList->a[0].zName; - if( NEVER(zTab==0) ) goto insert_cleanup; - pTab = sqlite3SrcListLookup(pParse, pTabList); - if( pTab==0 ){ - goto insert_cleanup; - } - iDb = sqlite3SchemaToIndex(db, pTab->pSchema); - assert( iDbnDb ); - pDb = &db->aDb[iDb]; - zDb = pDb->zName; - if( sqlite3AuthCheck(pParse, SQLITE_INSERT, pTab->zName, 0, zDb) ){ - goto insert_cleanup; - } - - /* Figure out if we have any triggers and if the table being - ** inserted into is a view - */ -#ifndef SQLITE_OMIT_TRIGGER - pTrigger = sqlite3TriggersExist(pParse, pTab, TK_INSERT, 0, &tmask); - isView = pTab->pSelect!=0; -#else -# define pTrigger 0 -# define tmask 0 -# define isView 0 -#endif -#ifdef SQLITE_OMIT_VIEW -# undef isView -# define isView 0 -#endif - assert( (pTrigger && tmask) || (pTrigger==0 && tmask==0) ); - - /* If pTab is really a view, make sure it has been initialized. - ** ViewGetColumnNames() is a no-op if pTab is not a view (or virtual - ** module table). - */ - if( sqlite3ViewGetColumnNames(pParse, pTab) ){ - goto insert_cleanup; - } - - /* Ensure that: - * (a) the table is not read-only, - * (b) that if it is a view then ON INSERT triggers exist - */ - if( sqlite3IsReadOnly(pParse, pTab, tmask) ){ - goto insert_cleanup; - } - - /* Allocate a VDBE - */ - v = sqlite3GetVdbe(pParse); - if( v==0 ) goto insert_cleanup; - if( pParse->nested==0 ) sqlite3VdbeCountChanges(v); - sqlite3BeginWriteOperation(pParse, pSelect || pTrigger, iDb); - -#ifndef SQLITE_OMIT_XFER_OPT - /* If the statement is of the form - ** - ** INSERT INTO SELECT * FROM ; - ** - ** Then special optimizations can be applied that make the transfer - ** very fast and which reduce fragmentation of indices. - ** - ** This is the 2nd template. - */ - if( pColumn==0 && xferOptimization(pParse, pTab, pSelect, onError, iDb) ){ - assert( !pTrigger ); - assert( pList==0 ); - goto insert_end; - } -#endif /* SQLITE_OMIT_XFER_OPT */ - - /* If this is an AUTOINCREMENT table, look up the sequence number in the - ** sqlite_sequence table and store it in memory cell regAutoinc. - */ - regAutoinc = autoIncBegin(pParse, iDb, pTab); - - /* Figure out how many columns of data are supplied. If the data - ** is coming from a SELECT statement, then generate a co-routine that - ** produces a single row of the SELECT on each invocation. The - ** co-routine is the common header to the 3rd and 4th templates. - */ - if( pSelect ){ - /* Data is coming from a SELECT. Generate code to implement that SELECT - ** as a co-routine. The code is common to both the 3rd and 4th - ** templates: - ** - ** EOF <- 0 - ** X <- A - ** goto B - ** A: setup for the SELECT - ** loop over the tables in the SELECT - ** load value into register R..R+n - ** yield X - ** end loop - ** cleanup after the SELECT - ** EOF <- 1 - ** yield X - ** halt-error - ** - ** On each invocation of the co-routine, it puts a single row of the - ** SELECT result into registers dest.iMem...dest.iMem+dest.nMem-1. - ** (These output registers are allocated by sqlite3Select().) When - ** the SELECT completes, it sets the EOF flag stored in regEof. - */ - int rc, j1; - - regEof = ++pParse->nMem; - sqlite3VdbeAddOp2(v, OP_Integer, 0, regEof); /* EOF <- 0 */ - VdbeComment((v, "SELECT eof flag")); - sqlite3SelectDestInit(&dest, SRT_Coroutine, ++pParse->nMem); - addrSelect = sqlite3VdbeCurrentAddr(v)+2; - sqlite3VdbeAddOp2(v, OP_Integer, addrSelect-1, dest.iParm); - j1 = sqlite3VdbeAddOp2(v, OP_Goto, 0, 0); - VdbeComment((v, "Jump over SELECT coroutine")); - - /* Resolve the expressions in the SELECT statement and execute it. */ - rc = sqlite3Select(pParse, pSelect, &dest); - assert( pParse->nErr==0 || rc ); - if( rc || NEVER(pParse->nErr) || db->mallocFailed ){ - goto insert_cleanup; - } - sqlite3VdbeAddOp2(v, OP_Integer, 1, regEof); /* EOF <- 1 */ - sqlite3VdbeAddOp1(v, OP_Yield, dest.iParm); /* yield X */ - sqlite3VdbeAddOp2(v, OP_Halt, SQLITE_INTERNAL, OE_Abort); - VdbeComment((v, "End of SELECT coroutine")); - sqlite3VdbeJumpHere(v, j1); /* label B: */ - - regFromSelect = dest.iMem; - assert( pSelect->pEList ); - nColumn = pSelect->pEList->nExpr; - assert( dest.nMem==nColumn ); - - /* Set useTempTable to TRUE if the result of the SELECT statement - ** should be written into a temporary table (template 4). Set to - ** FALSE if each* row of the SELECT can be written directly into - ** the destination table (template 3). - ** - ** A temp table must be used if the table being updated is also one - ** of the tables being read by the SELECT statement. Also use a - ** temp table in the case of row triggers. - */ - if( pTrigger || readsTable(pParse, addrSelect, iDb, pTab) ){ - useTempTable = 1; - } - - if( useTempTable ){ - /* Invoke the coroutine to extract information from the SELECT - ** and add it to a transient table srcTab. The code generated - ** here is from the 4th template: - ** - ** B: open temp table - ** L: yield X - ** if EOF goto M - ** insert row from R..R+n into temp table - ** goto L - ** M: ... - */ - int regRec; /* Register to hold packed record */ - int regTempRowid; /* Register to hold temp table ROWID */ - int addrTop; /* Label "L" */ - int addrIf; /* Address of jump to M */ - - srcTab = pParse->nTab++; - regRec = sqlite3GetTempReg(pParse); - regTempRowid = sqlite3GetTempReg(pParse); - sqlite3VdbeAddOp2(v, OP_OpenEphemeral, srcTab, nColumn); - addrTop = sqlite3VdbeAddOp1(v, OP_Yield, dest.iParm); - addrIf = sqlite3VdbeAddOp1(v, OP_If, regEof); - sqlite3VdbeAddOp3(v, OP_MakeRecord, regFromSelect, nColumn, regRec); - sqlite3VdbeAddOp2(v, OP_NewRowid, srcTab, regTempRowid); - sqlite3VdbeAddOp3(v, OP_Insert, srcTab, regRec, regTempRowid); - sqlite3VdbeAddOp2(v, OP_Goto, 0, addrTop); - sqlite3VdbeJumpHere(v, addrIf); - sqlite3ReleaseTempReg(pParse, regRec); - sqlite3ReleaseTempReg(pParse, regTempRowid); - } - }else{ - /* This is the case if the data for the INSERT is coming from a VALUES - ** clause - */ - NameContext sNC; - memset(&sNC, 0, sizeof(sNC)); - sNC.pParse = pParse; - srcTab = -1; - assert( useTempTable==0 ); - nColumn = pList ? pList->nExpr : 0; - for(i=0; ia[i].pExpr) ){ - goto insert_cleanup; - } - } - } - - /* Make sure the number of columns in the source data matches the number - ** of columns to be inserted into the table. - */ - if( IsVirtual(pTab) ){ - for(i=0; inCol; i++){ - nHidden += (IsHiddenColumn(&pTab->aCol[i]) ? 1 : 0); - } - } - if( pColumn==0 && nColumn && nColumn!=(pTab->nCol-nHidden) ){ - sqlite3ErrorMsg(pParse, - "table %S has %d columns but %d values were supplied", - pTabList, 0, pTab->nCol-nHidden, nColumn); - goto insert_cleanup; - } - if( pColumn!=0 && nColumn!=pColumn->nId ){ - sqlite3ErrorMsg(pParse, "%d values for %d columns", nColumn, pColumn->nId); - goto insert_cleanup; - } - - /* If the INSERT statement included an IDLIST term, then make sure - ** all elements of the IDLIST really are columns of the table and - ** remember the column indices. - ** - ** If the table has an INTEGER PRIMARY KEY column and that column - ** is named in the IDLIST, then record in the keyColumn variable - ** the index into IDLIST of the primary key column. keyColumn is - ** the index of the primary key as it appears in IDLIST, not as - ** is appears in the original table. (The index of the primary - ** key in the original table is pTab->iPKey.) - */ - if( pColumn ){ - for(i=0; inId; i++){ - pColumn->a[i].idx = -1; - } - for(i=0; inId; i++){ - for(j=0; jnCol; j++){ - if( sqlite3StrICmp(pColumn->a[i].zName, pTab->aCol[j].zName)==0 ){ - pColumn->a[i].idx = j; - if( j==pTab->iPKey ){ - keyColumn = i; - } - break; - } - } - if( j>=pTab->nCol ){ - if( sqlite3IsRowid(pColumn->a[i].zName) ){ - keyColumn = i; - }else{ - sqlite3ErrorMsg(pParse, "table %S has no column named %s", - pTabList, 0, pColumn->a[i].zName); - pParse->checkSchema = 1; - goto insert_cleanup; - } - } - } - } - - /* If there is no IDLIST term but the table has an integer primary - ** key, the set the keyColumn variable to the primary key column index - ** in the original table definition. - */ - if( pColumn==0 && nColumn>0 ){ - keyColumn = pTab->iPKey; - } - - /* Initialize the count of rows to be inserted - */ - if( db->flags & SQLITE_CountRows ){ - regRowCount = ++pParse->nMem; - sqlite3VdbeAddOp2(v, OP_Integer, 0, regRowCount); - } - - /* If this is not a view, open the table and and all indices */ - if( !isView ){ - int nIdx; - - baseCur = pParse->nTab; - nIdx = sqlite3OpenTableAndIndices(pParse, pTab, baseCur, OP_OpenWrite); - aRegIdx = sqlite3DbMallocRaw(db, sizeof(int)*(nIdx+1)); - if( aRegIdx==0 ){ - goto insert_cleanup; - } - for(i=0; inMem; - } - } - - /* This is the top of the main insertion loop */ - if( useTempTable ){ - /* This block codes the top of loop only. The complete loop is the - ** following pseudocode (template 4): - ** - ** rewind temp table - ** C: loop over rows of intermediate table - ** transfer values form intermediate table into
- ** end loop - ** D: ... - */ - addrInsTop = sqlite3VdbeAddOp1(v, OP_Rewind, srcTab); - addrCont = sqlite3VdbeCurrentAddr(v); - }else if( pSelect ){ - /* This block codes the top of loop only. The complete loop is the - ** following pseudocode (template 3): - ** - ** C: yield X - ** if EOF goto D - ** insert the select result into
from R..R+n - ** goto C - ** D: ... - */ - addrCont = sqlite3VdbeAddOp1(v, OP_Yield, dest.iParm); - addrInsTop = sqlite3VdbeAddOp1(v, OP_If, regEof); - } - - /* Allocate registers for holding the rowid of the new row, - ** the content of the new row, and the assemblied row record. - */ - regRowid = regIns = pParse->nMem+1; - pParse->nMem += pTab->nCol + 1; - if( IsVirtual(pTab) ){ - regRowid++; - pParse->nMem++; - } - regData = regRowid+1; - - /* Run the BEFORE and INSTEAD OF triggers, if there are any - */ - endOfLoop = sqlite3VdbeMakeLabel(v); - if( tmask & TRIGGER_BEFORE ){ - int regCols = sqlite3GetTempRange(pParse, pTab->nCol+1); - - /* build the NEW.* reference row. Note that if there is an INTEGER - ** PRIMARY KEY into which a NULL is being inserted, that NULL will be - ** translated into a unique ID for the row. But on a BEFORE trigger, - ** we do not know what the unique ID will be (because the insert has - ** not happened yet) so we substitute a rowid of -1 - */ - if( keyColumn<0 ){ - sqlite3VdbeAddOp2(v, OP_Integer, -1, regCols); - }else{ - int j1; - if( useTempTable ){ - sqlite3VdbeAddOp3(v, OP_Column, srcTab, keyColumn, regCols); - }else{ - assert( pSelect==0 ); /* Otherwise useTempTable is true */ - sqlite3ExprCode(pParse, pList->a[keyColumn].pExpr, regCols); - } - j1 = sqlite3VdbeAddOp1(v, OP_NotNull, regCols); - sqlite3VdbeAddOp2(v, OP_Integer, -1, regCols); - sqlite3VdbeJumpHere(v, j1); - sqlite3VdbeAddOp1(v, OP_MustBeInt, regCols); - } - - /* Cannot have triggers on a virtual table. If it were possible, - ** this block would have to account for hidden column. - */ - assert( !IsVirtual(pTab) ); - - /* Create the new column data - */ - for(i=0; inCol; i++){ - if( pColumn==0 ){ - j = i; - }else{ - for(j=0; jnId; j++){ - if( pColumn->a[j].idx==i ) break; - } - } - if( (!useTempTable && !pList) || (pColumn && j>=pColumn->nId) ){ - sqlite3ExprCode(pParse, pTab->aCol[i].pDflt, regCols+i+1); - }else if( useTempTable ){ - sqlite3VdbeAddOp3(v, OP_Column, srcTab, j, regCols+i+1); - }else{ - assert( pSelect==0 ); /* Otherwise useTempTable is true */ - sqlite3ExprCodeAndCache(pParse, pList->a[j].pExpr, regCols+i+1); - } - } - - /* If this is an INSERT on a view with an INSTEAD OF INSERT trigger, - ** do not attempt any conversions before assembling the record. - ** If this is a real table, attempt conversions as required by the - ** table column affinities. - */ - if( !isView ){ - sqlite3VdbeAddOp2(v, OP_Affinity, regCols+1, pTab->nCol); - sqlite3TableAffinityStr(v, pTab); - } - - /* Fire BEFORE or INSTEAD OF triggers */ - sqlite3CodeRowTrigger(pParse, pTrigger, TK_INSERT, 0, TRIGGER_BEFORE, - pTab, regCols-pTab->nCol-1, onError, endOfLoop); - - sqlite3ReleaseTempRange(pParse, regCols, pTab->nCol+1); - } - - /* Push the record number for the new entry onto the stack. The - ** record number is a randomly generate integer created by NewRowid - ** except when the table has an INTEGER PRIMARY KEY column, in which - ** case the record number is the same as that column. - */ - if( !isView ){ - if( IsVirtual(pTab) ){ - /* The row that the VUpdate opcode will delete: none */ - sqlite3VdbeAddOp2(v, OP_Null, 0, regIns); - } - if( keyColumn>=0 ){ - if( useTempTable ){ - sqlite3VdbeAddOp3(v, OP_Column, srcTab, keyColumn, regRowid); - }else if( pSelect ){ - sqlite3VdbeAddOp2(v, OP_SCopy, regFromSelect+keyColumn, regRowid); - }else{ - VdbeOp *pOp; - sqlite3ExprCode(pParse, pList->a[keyColumn].pExpr, regRowid); - pOp = sqlite3VdbeGetOp(v, -1); - if( ALWAYS(pOp) && pOp->opcode==OP_Null && !IsVirtual(pTab) ){ - appendFlag = 1; - pOp->opcode = OP_NewRowid; - pOp->p1 = baseCur; - pOp->p2 = regRowid; - pOp->p3 = regAutoinc; - } - } - /* If the PRIMARY KEY expression is NULL, then use OP_NewRowid - ** to generate a unique primary key value. - */ - if( !appendFlag ){ - int j1; - if( !IsVirtual(pTab) ){ - j1 = sqlite3VdbeAddOp1(v, OP_NotNull, regRowid); - sqlite3VdbeAddOp3(v, OP_NewRowid, baseCur, regRowid, regAutoinc); - sqlite3VdbeJumpHere(v, j1); - }else{ - j1 = sqlite3VdbeCurrentAddr(v); - sqlite3VdbeAddOp2(v, OP_IsNull, regRowid, j1+2); - } - sqlite3VdbeAddOp1(v, OP_MustBeInt, regRowid); - } - }else if( IsVirtual(pTab) ){ - sqlite3VdbeAddOp2(v, OP_Null, 0, regRowid); - }else{ - sqlite3VdbeAddOp3(v, OP_NewRowid, baseCur, regRowid, regAutoinc); - appendFlag = 1; - } - autoIncStep(pParse, regAutoinc, regRowid); - - /* Push onto the stack, data for all columns of the new entry, beginning - ** with the first column. - */ - nHidden = 0; - for(i=0; inCol; i++){ - int iRegStore = regRowid+1+i; - if( i==pTab->iPKey ){ - /* The value of the INTEGER PRIMARY KEY column is always a NULL. - ** Whenever this column is read, the record number will be substituted - ** in its place. So will fill this column with a NULL to avoid - ** taking up data space with information that will never be used. */ - sqlite3VdbeAddOp2(v, OP_Null, 0, iRegStore); - continue; - } - if( pColumn==0 ){ - if( IsHiddenColumn(&pTab->aCol[i]) ){ - assert( IsVirtual(pTab) ); - j = -1; - nHidden++; - }else{ - j = i - nHidden; - } - }else{ - for(j=0; jnId; j++){ - if( pColumn->a[j].idx==i ) break; - } - } - if( j<0 || nColumn==0 || (pColumn && j>=pColumn->nId) ){ - sqlite3ExprCode(pParse, pTab->aCol[i].pDflt, iRegStore); - }else if( useTempTable ){ - sqlite3VdbeAddOp3(v, OP_Column, srcTab, j, iRegStore); - }else if( pSelect ){ - sqlite3VdbeAddOp2(v, OP_SCopy, regFromSelect+j, iRegStore); - }else{ - sqlite3ExprCode(pParse, pList->a[j].pExpr, iRegStore); - } - } - - /* Generate code to check constraints and generate index keys and - ** do the insertion. - */ -#ifndef SQLITE_OMIT_VIRTUALTABLE - if( IsVirtual(pTab) ){ - const char *pVTab = (const char *)sqlite3GetVTable(db, pTab); - sqlite3VtabMakeWritable(pParse, pTab); - sqlite3VdbeAddOp4(v, OP_VUpdate, 1, pTab->nCol+2, regIns, pVTab, P4_VTAB); - sqlite3VdbeChangeP5(v, onError==OE_Default ? OE_Abort : onError); - sqlite3MayAbort(pParse); - }else -#endif - { - int isReplace; /* Set to true if constraints may cause a replace */ - sqlite3GenerateConstraintChecks(pParse, pTab, baseCur, regIns, aRegIdx, - keyColumn>=0, 0, onError, endOfLoop, &isReplace - ); - sqlite3FkCheck(pParse, pTab, 0, regIns); - sqlite3CompleteInsertion( - pParse, pTab, baseCur, regIns, aRegIdx, 0, appendFlag, isReplace==0 - ); - } - } - - /* Update the count of rows that are inserted - */ - if( (db->flags & SQLITE_CountRows)!=0 ){ - sqlite3VdbeAddOp2(v, OP_AddImm, regRowCount, 1); - } - - if( pTrigger ){ - /* Code AFTER triggers */ - sqlite3CodeRowTrigger(pParse, pTrigger, TK_INSERT, 0, TRIGGER_AFTER, - pTab, regData-2-pTab->nCol, onError, endOfLoop); - } - - /* The bottom of the main insertion loop, if the data source - ** is a SELECT statement. - */ - sqlite3VdbeResolveLabel(v, endOfLoop); - if( useTempTable ){ - sqlite3VdbeAddOp2(v, OP_Next, srcTab, addrCont); - sqlite3VdbeJumpHere(v, addrInsTop); - sqlite3VdbeAddOp1(v, OP_Close, srcTab); - }else if( pSelect ){ - sqlite3VdbeAddOp2(v, OP_Goto, 0, addrCont); - sqlite3VdbeJumpHere(v, addrInsTop); - } - - if( !IsVirtual(pTab) && !isView ){ - /* Close all tables opened */ - sqlite3VdbeAddOp1(v, OP_Close, baseCur); - for(idx=1, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, idx++){ - sqlite3VdbeAddOp1(v, OP_Close, idx+baseCur); - } - } - -insert_end: - /* Update the sqlite_sequence table by storing the content of the - ** maximum rowid counter values recorded while inserting into - ** autoincrement tables. - */ - if( pParse->nested==0 && pParse->pTriggerTab==0 ){ - sqlite3AutoincrementEnd(pParse); - } - - /* - ** Return the number of rows inserted. If this routine is - ** generating code because of a call to sqlite3NestedParse(), do not - ** invoke the callback function. - */ - if( (db->flags&SQLITE_CountRows) && !pParse->nested && !pParse->pTriggerTab ){ - sqlite3VdbeAddOp2(v, OP_ResultRow, regRowCount, 1); - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "rows inserted", SQLITE_STATIC); - } - -insert_cleanup: - sqlite3SrcListDelete(db, pTabList); - sqlite3ExprListDelete(db, pList); - sqlite3SelectDelete(db, pSelect); - sqlite3IdListDelete(db, pColumn); - sqlite3DbFree(db, aRegIdx); -} - -/* Make sure "isView" and other macros defined above are undefined. Otherwise -** thely may interfere with compilation of other functions in this file -** (or in another file, if this file becomes part of the amalgamation). */ -#ifdef isView - #undef isView -#endif -#ifdef pTrigger - #undef pTrigger -#endif -#ifdef tmask - #undef tmask -#endif - - -/* -** Generate code to do constraint checks prior to an INSERT or an UPDATE. -** -** The input is a range of consecutive registers as follows: -** -** 1. The rowid of the row after the update. -** -** 2. The data in the first column of the entry after the update. -** -** i. Data from middle columns... -** -** N. The data in the last column of the entry after the update. -** -** The regRowid parameter is the index of the register containing (1). -** -** If isUpdate is true and rowidChng is non-zero, then rowidChng contains -** the address of a register containing the rowid before the update takes -** place. isUpdate is true for UPDATEs and false for INSERTs. If isUpdate -** is false, indicating an INSERT statement, then a non-zero rowidChng -** indicates that the rowid was explicitly specified as part of the -** INSERT statement. If rowidChng is false, it means that the rowid is -** computed automatically in an insert or that the rowid value is not -** modified by an update. -** -** The code generated by this routine store new index entries into -** registers identified by aRegIdx[]. No index entry is created for -** indices where aRegIdx[i]==0. The order of indices in aRegIdx[] is -** the same as the order of indices on the linked list of indices -** attached to the table. -** -** This routine also generates code to check constraints. NOT NULL, -** CHECK, and UNIQUE constraints are all checked. If a constraint fails, -** then the appropriate action is performed. There are five possible -** actions: ROLLBACK, ABORT, FAIL, REPLACE, and IGNORE. -** -** Constraint type Action What Happens -** --------------- ---------- ---------------------------------------- -** any ROLLBACK The current transaction is rolled back and -** sqlite3_exec() returns immediately with a -** return code of SQLITE_CONSTRAINT. -** -** any ABORT Back out changes from the current command -** only (do not do a complete rollback) then -** cause sqlite3_exec() to return immediately -** with SQLITE_CONSTRAINT. -** -** any FAIL Sqlite_exec() returns immediately with a -** return code of SQLITE_CONSTRAINT. The -** transaction is not rolled back and any -** prior changes are retained. -** -** any IGNORE The record number and data is popped from -** the stack and there is an immediate jump -** to label ignoreDest. -** -** NOT NULL REPLACE The NULL value is replace by the default -** value for that column. If the default value -** is NULL, the action is the same as ABORT. -** -** UNIQUE REPLACE The other row that conflicts with the row -** being inserted is removed. -** -** CHECK REPLACE Illegal. The results in an exception. -** -** Which action to take is determined by the overrideError parameter. -** Or if overrideError==OE_Default, then the pParse->onError parameter -** is used. Or if pParse->onError==OE_Default then the onError value -** for the constraint is used. -** -** The calling routine must open a read/write cursor for pTab with -** cursor number "baseCur". All indices of pTab must also have open -** read/write cursors with cursor number baseCur+i for the i-th cursor. -** Except, if there is no possibility of a REPLACE action then -** cursors do not need to be open for indices where aRegIdx[i]==0. -*/ -void sqlite3GenerateConstraintChecks( - Parse *pParse, /* The parser context */ - Table *pTab, /* the table into which we are inserting */ - int baseCur, /* Index of a read/write cursor pointing at pTab */ - int regRowid, /* Index of the range of input registers */ - int *aRegIdx, /* Register used by each index. 0 for unused indices */ - int rowidChng, /* True if the rowid might collide with existing entry */ - int isUpdate, /* True for UPDATE, False for INSERT */ - int overrideError, /* Override onError to this if not OE_Default */ - int ignoreDest, /* Jump to this label on an OE_Ignore resolution */ - int *pbMayReplace /* OUT: Set to true if constraint may cause a replace */ -){ - int i; /* loop counter */ - Vdbe *v; /* VDBE under constrution */ - int nCol; /* Number of columns */ - int onError; /* Conflict resolution strategy */ - int j1; /* Addresss of jump instruction */ - int j2 = 0, j3; /* Addresses of jump instructions */ - int regData; /* Register containing first data column */ - int iCur; /* Table cursor number */ - Index *pIdx; /* Pointer to one of the indices */ - int seenReplace = 0; /* True if REPLACE is used to resolve INT PK conflict */ - int regOldRowid = (rowidChng && isUpdate) ? rowidChng : regRowid; - - v = sqlite3GetVdbe(pParse); - assert( v!=0 ); - assert( pTab->pSelect==0 ); /* This table is not a VIEW */ - nCol = pTab->nCol; - regData = regRowid + 1; - - /* Test all NOT NULL constraints. - */ - for(i=0; iiPKey ){ - continue; - } - onError = pTab->aCol[i].notNull; - if( onError==OE_None ) continue; - if( overrideError!=OE_Default ){ - onError = overrideError; - }else if( onError==OE_Default ){ - onError = OE_Abort; - } - if( onError==OE_Replace && pTab->aCol[i].pDflt==0 ){ - onError = OE_Abort; - } - assert( onError==OE_Rollback || onError==OE_Abort || onError==OE_Fail - || onError==OE_Ignore || onError==OE_Replace ); - switch( onError ){ - case OE_Abort: - sqlite3MayAbort(pParse); - case OE_Rollback: - case OE_Fail: { - char *zMsg; - sqlite3VdbeAddOp3(v, OP_HaltIfNull, - SQLITE_CONSTRAINT, onError, regData+i); - zMsg = sqlite3MPrintf(pParse->db, "%s.%s may not be NULL", - pTab->zName, pTab->aCol[i].zName); - sqlite3VdbeChangeP4(v, -1, zMsg, P4_DYNAMIC); - break; - } - case OE_Ignore: { - sqlite3VdbeAddOp2(v, OP_IsNull, regData+i, ignoreDest); - break; - } - default: { - assert( onError==OE_Replace ); - j1 = sqlite3VdbeAddOp1(v, OP_NotNull, regData+i); - sqlite3ExprCode(pParse, pTab->aCol[i].pDflt, regData+i); - sqlite3VdbeJumpHere(v, j1); - break; - } - } - } - - /* Test all CHECK constraints - */ -#ifndef SQLITE_OMIT_CHECK - if( pTab->pCheck && (pParse->db->flags & SQLITE_IgnoreChecks)==0 ){ - int allOk = sqlite3VdbeMakeLabel(v); - pParse->ckBase = regData; - sqlite3ExprIfTrue(pParse, pTab->pCheck, allOk, SQLITE_JUMPIFNULL); - onError = overrideError!=OE_Default ? overrideError : OE_Abort; - if( onError==OE_Ignore ){ - sqlite3VdbeAddOp2(v, OP_Goto, 0, ignoreDest); - }else{ - if( onError==OE_Replace ) onError = OE_Abort; /* IMP: R-15569-63625 */ - sqlite3HaltConstraint(pParse, onError, 0, 0); - } - sqlite3VdbeResolveLabel(v, allOk); - } -#endif /* !defined(SQLITE_OMIT_CHECK) */ - - /* If we have an INTEGER PRIMARY KEY, make sure the primary key - ** of the new record does not previously exist. Except, if this - ** is an UPDATE and the primary key is not changing, that is OK. - */ - if( rowidChng ){ - onError = pTab->keyConf; - if( overrideError!=OE_Default ){ - onError = overrideError; - }else if( onError==OE_Default ){ - onError = OE_Abort; - } - - if( isUpdate ){ - j2 = sqlite3VdbeAddOp3(v, OP_Eq, regRowid, 0, rowidChng); - } - j3 = sqlite3VdbeAddOp3(v, OP_NotExists, baseCur, 0, regRowid); - switch( onError ){ - default: { - onError = OE_Abort; - /* Fall thru into the next case */ - } - case OE_Rollback: - case OE_Abort: - case OE_Fail: { - sqlite3HaltConstraint( - pParse, onError, "PRIMARY KEY must be unique", P4_STATIC); - break; - } - case OE_Replace: { - /* If there are DELETE triggers on this table and the - ** recursive-triggers flag is set, call GenerateRowDelete() to - ** remove the conflicting row from the the table. This will fire - ** the triggers and remove both the table and index b-tree entries. - ** - ** Otherwise, if there are no triggers or the recursive-triggers - ** flag is not set, but the table has one or more indexes, call - ** GenerateRowIndexDelete(). This removes the index b-tree entries - ** only. The table b-tree entry will be replaced by the new entry - ** when it is inserted. - ** - ** If either GenerateRowDelete() or GenerateRowIndexDelete() is called, - ** also invoke MultiWrite() to indicate that this VDBE may require - ** statement rollback (if the statement is aborted after the delete - ** takes place). Earlier versions called sqlite3MultiWrite() regardless, - ** but being more selective here allows statements like: - ** - ** REPLACE INTO t(rowid) VALUES($newrowid) - ** - ** to run without a statement journal if there are no indexes on the - ** table. - */ - Trigger *pTrigger = 0; - if( pParse->db->flags&SQLITE_RecTriggers ){ - pTrigger = sqlite3TriggersExist(pParse, pTab, TK_DELETE, 0, 0); - } - if( pTrigger || sqlite3FkRequired(pParse, pTab, 0, 0) ){ - sqlite3MultiWrite(pParse); - sqlite3GenerateRowDelete( - pParse, pTab, baseCur, regRowid, 0, pTrigger, OE_Replace - ); - }else if( pTab->pIndex ){ - sqlite3MultiWrite(pParse); - sqlite3GenerateRowIndexDelete(pParse, pTab, baseCur, 0); - } - seenReplace = 1; - break; - } - case OE_Ignore: { - assert( seenReplace==0 ); - sqlite3VdbeAddOp2(v, OP_Goto, 0, ignoreDest); - break; - } - } - sqlite3VdbeJumpHere(v, j3); - if( isUpdate ){ - sqlite3VdbeJumpHere(v, j2); - } - } - - /* Test all UNIQUE constraints by creating entries for each UNIQUE - ** index and making sure that duplicate entries do not already exist. - ** Add the new records to the indices as we go. - */ - for(iCur=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, iCur++){ - int regIdx; - int regR; - - if( aRegIdx[iCur]==0 ) continue; /* Skip unused indices */ - - /* Create a key for accessing the index entry */ - regIdx = sqlite3GetTempRange(pParse, pIdx->nColumn+1); - for(i=0; inColumn; i++){ - int idx = pIdx->aiColumn[i]; - if( idx==pTab->iPKey ){ - sqlite3VdbeAddOp2(v, OP_SCopy, regRowid, regIdx+i); - }else{ - sqlite3VdbeAddOp2(v, OP_SCopy, regData+idx, regIdx+i); - } - } - sqlite3VdbeAddOp2(v, OP_SCopy, regRowid, regIdx+i); - sqlite3VdbeAddOp3(v, OP_MakeRecord, regIdx, pIdx->nColumn+1, aRegIdx[iCur]); - sqlite3VdbeChangeP4(v, -1, sqlite3IndexAffinityStr(v, pIdx), P4_TRANSIENT); - sqlite3ExprCacheAffinityChange(pParse, regIdx, pIdx->nColumn+1); - - /* Find out what action to take in case there is an indexing conflict */ - onError = pIdx->onError; - if( onError==OE_None ){ - sqlite3ReleaseTempRange(pParse, regIdx, pIdx->nColumn+1); - continue; /* pIdx is not a UNIQUE index */ - } - if( overrideError!=OE_Default ){ - onError = overrideError; - }else if( onError==OE_Default ){ - onError = OE_Abort; - } - if( seenReplace ){ - if( onError==OE_Ignore ) onError = OE_Replace; - else if( onError==OE_Fail ) onError = OE_Abort; - } - - /* Check to see if the new index entry will be unique */ - regR = sqlite3GetTempReg(pParse); - sqlite3VdbeAddOp2(v, OP_SCopy, regOldRowid, regR); - j3 = sqlite3VdbeAddOp4(v, OP_IsUnique, baseCur+iCur+1, 0, - regR, SQLITE_INT_TO_PTR(regIdx), - P4_INT32); - sqlite3ReleaseTempRange(pParse, regIdx, pIdx->nColumn+1); - - /* Generate code that executes if the new index entry is not unique */ - assert( onError==OE_Rollback || onError==OE_Abort || onError==OE_Fail - || onError==OE_Ignore || onError==OE_Replace ); - switch( onError ){ - case OE_Rollback: - case OE_Abort: - case OE_Fail: { - int j; - StrAccum errMsg; - const char *zSep; - char *zErr; - - sqlite3StrAccumInit(&errMsg, 0, 0, 200); - errMsg.db = pParse->db; - zSep = pIdx->nColumn>1 ? "columns " : "column "; - for(j=0; jnColumn; j++){ - char *zCol = pTab->aCol[pIdx->aiColumn[j]].zName; - sqlite3StrAccumAppend(&errMsg, zSep, -1); - zSep = ", "; - sqlite3StrAccumAppend(&errMsg, zCol, -1); - } - sqlite3StrAccumAppend(&errMsg, - pIdx->nColumn>1 ? " are not unique" : " is not unique", -1); - zErr = sqlite3StrAccumFinish(&errMsg); - sqlite3HaltConstraint(pParse, onError, zErr, 0); - sqlite3DbFree(errMsg.db, zErr); - break; - } - case OE_Ignore: { - assert( seenReplace==0 ); - sqlite3VdbeAddOp2(v, OP_Goto, 0, ignoreDest); - break; - } - default: { - Trigger *pTrigger = 0; - assert( onError==OE_Replace ); - sqlite3MultiWrite(pParse); - if( pParse->db->flags&SQLITE_RecTriggers ){ - pTrigger = sqlite3TriggersExist(pParse, pTab, TK_DELETE, 0, 0); - } - sqlite3GenerateRowDelete( - pParse, pTab, baseCur, regR, 0, pTrigger, OE_Replace - ); - seenReplace = 1; - break; - } - } - sqlite3VdbeJumpHere(v, j3); - sqlite3ReleaseTempReg(pParse, regR); - } - - if( pbMayReplace ){ - *pbMayReplace = seenReplace; - } -} - -/* -** This routine generates code to finish the INSERT or UPDATE operation -** that was started by a prior call to sqlite3GenerateConstraintChecks. -** A consecutive range of registers starting at regRowid contains the -** rowid and the content to be inserted. -** -** The arguments to this routine should be the same as the first six -** arguments to sqlite3GenerateConstraintChecks. -*/ -void sqlite3CompleteInsertion( - Parse *pParse, /* The parser context */ - Table *pTab, /* the table into which we are inserting */ - int baseCur, /* Index of a read/write cursor pointing at pTab */ - int regRowid, /* Range of content */ - int *aRegIdx, /* Register used by each index. 0 for unused indices */ - int isUpdate, /* True for UPDATE, False for INSERT */ - int appendBias, /* True if this is likely to be an append */ - int useSeekResult /* True to set the USESEEKRESULT flag on OP_[Idx]Insert */ -){ - int i; - Vdbe *v; - int nIdx; - Index *pIdx; - u8 pik_flags; - int regData; - int regRec; - - v = sqlite3GetVdbe(pParse); - assert( v!=0 ); - assert( pTab->pSelect==0 ); /* This table is not a VIEW */ - for(nIdx=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, nIdx++){} - for(i=nIdx-1; i>=0; i--){ - if( aRegIdx[i]==0 ) continue; - sqlite3VdbeAddOp2(v, OP_IdxInsert, baseCur+i+1, aRegIdx[i]); - if( useSeekResult ){ - sqlite3VdbeChangeP5(v, OPFLAG_USESEEKRESULT); - } - } - regData = regRowid + 1; - regRec = sqlite3GetTempReg(pParse); - sqlite3VdbeAddOp3(v, OP_MakeRecord, regData, pTab->nCol, regRec); - sqlite3TableAffinityStr(v, pTab); - sqlite3ExprCacheAffinityChange(pParse, regData, pTab->nCol); - if( pParse->nested ){ - pik_flags = 0; - }else{ - pik_flags = OPFLAG_NCHANGE; - pik_flags |= (isUpdate?OPFLAG_ISUPDATE:OPFLAG_LASTROWID); - } - if( appendBias ){ - pik_flags |= OPFLAG_APPEND; - } - if( useSeekResult ){ - pik_flags |= OPFLAG_USESEEKRESULT; - } - sqlite3VdbeAddOp3(v, OP_Insert, baseCur, regRec, regRowid); - if( !pParse->nested ){ - sqlite3VdbeChangeP4(v, -1, pTab->zName, P4_TRANSIENT); - } - sqlite3VdbeChangeP5(v, pik_flags); -} - -/* -** Generate code that will open cursors for a table and for all -** indices of that table. The "baseCur" parameter is the cursor number used -** for the table. Indices are opened on subsequent cursors. -** -** Return the number of indices on the table. -*/ -int sqlite3OpenTableAndIndices( - Parse *pParse, /* Parsing context */ - Table *pTab, /* Table to be opened */ - int baseCur, /* Cursor number assigned to the table */ - int op /* OP_OpenRead or OP_OpenWrite */ -){ - int i; - int iDb; - Index *pIdx; - Vdbe *v; - - if( IsVirtual(pTab) ) return 0; - iDb = sqlite3SchemaToIndex(pParse->db, pTab->pSchema); - v = sqlite3GetVdbe(pParse); - assert( v!=0 ); - sqlite3OpenTable(pParse, baseCur, iDb, pTab, op); - for(i=1, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, i++){ - KeyInfo *pKey = sqlite3IndexKeyinfo(pParse, pIdx); - assert( pIdx->pSchema==pTab->pSchema ); - sqlite3VdbeAddOp4(v, op, i+baseCur, pIdx->tnum, iDb, - (char*)pKey, P4_KEYINFO_HANDOFF); - VdbeComment((v, "%s", pIdx->zName)); - } - if( pParse->nTabnTab = baseCur+i; - } - return i-1; -} - - -#ifdef SQLITE_TEST -/* -** The following global variable is incremented whenever the -** transfer optimization is used. This is used for testing -** purposes only - to make sure the transfer optimization really -** is happening when it is suppose to. -*/ -int sqlite3_xferopt_count; -#endif /* SQLITE_TEST */ - - -#ifndef SQLITE_OMIT_XFER_OPT -/* -** Check to collation names to see if they are compatible. -*/ -static int xferCompatibleCollation(const char *z1, const char *z2){ - if( z1==0 ){ - return z2==0; - } - if( z2==0 ){ - return 0; - } - return sqlite3StrICmp(z1, z2)==0; -} - - -/* -** Check to see if index pSrc is compatible as a source of data -** for index pDest in an insert transfer optimization. The rules -** for a compatible index: -** -** * The index is over the same set of columns -** * The same DESC and ASC markings occurs on all columns -** * The same onError processing (OE_Abort, OE_Ignore, etc) -** * The same collating sequence on each column -*/ -static int xferCompatibleIndex(Index *pDest, Index *pSrc){ - int i; - assert( pDest && pSrc ); - assert( pDest->pTable!=pSrc->pTable ); - if( pDest->nColumn!=pSrc->nColumn ){ - return 0; /* Different number of columns */ - } - if( pDest->onError!=pSrc->onError ){ - return 0; /* Different conflict resolution strategies */ - } - for(i=0; inColumn; i++){ - if( pSrc->aiColumn[i]!=pDest->aiColumn[i] ){ - return 0; /* Different columns indexed */ - } - if( pSrc->aSortOrder[i]!=pDest->aSortOrder[i] ){ - return 0; /* Different sort orders */ - } - if( !xferCompatibleCollation(pSrc->azColl[i],pDest->azColl[i]) ){ - return 0; /* Different collating sequences */ - } - } - - /* If no test above fails then the indices must be compatible */ - return 1; -} - -/* -** Attempt the transfer optimization on INSERTs of the form -** -** INSERT INTO tab1 SELECT * FROM tab2; -** -** This optimization is only attempted if -** -** (1) tab1 and tab2 have identical schemas including all the -** same indices and constraints -** -** (2) tab1 and tab2 are different tables -** -** (3) There must be no triggers on tab1 -** -** (4) The result set of the SELECT statement is "*" -** -** (5) The SELECT statement has no WHERE, HAVING, ORDER BY, GROUP BY, -** or LIMIT clause. -** -** (6) The SELECT statement is a simple (not a compound) select that -** contains only tab2 in its FROM clause -** -** This method for implementing the INSERT transfers raw records from -** tab2 over to tab1. The columns are not decoded. Raw records from -** the indices of tab2 are transfered to tab1 as well. In so doing, -** the resulting tab1 has much less fragmentation. -** -** This routine returns TRUE if the optimization is attempted. If any -** of the conditions above fail so that the optimization should not -** be attempted, then this routine returns FALSE. -*/ -static int xferOptimization( - Parse *pParse, /* Parser context */ - Table *pDest, /* The table we are inserting into */ - Select *pSelect, /* A SELECT statement to use as the data source */ - int onError, /* How to handle constraint errors */ - int iDbDest /* The database of pDest */ -){ - ExprList *pEList; /* The result set of the SELECT */ - Table *pSrc; /* The table in the FROM clause of SELECT */ - Index *pSrcIdx, *pDestIdx; /* Source and destination indices */ - struct SrcList_item *pItem; /* An element of pSelect->pSrc */ - int i; /* Loop counter */ - int iDbSrc; /* The database of pSrc */ - int iSrc, iDest; /* Cursors from source and destination */ - int addr1, addr2; /* Loop addresses */ - int emptyDestTest; /* Address of test for empty pDest */ - int emptySrcTest; /* Address of test for empty pSrc */ - Vdbe *v; /* The VDBE we are building */ - KeyInfo *pKey; /* Key information for an index */ - int regAutoinc; /* Memory register used by AUTOINC */ - int destHasUniqueIdx = 0; /* True if pDest has a UNIQUE index */ - int regData, regRowid; /* Registers holding data and rowid */ - - if( pSelect==0 ){ - return 0; /* Must be of the form INSERT INTO ... SELECT ... */ - } - if( sqlite3TriggerList(pParse, pDest) ){ - return 0; /* tab1 must not have triggers */ - } -#ifndef SQLITE_OMIT_VIRTUALTABLE - if( pDest->tabFlags & TF_Virtual ){ - return 0; /* tab1 must not be a virtual table */ - } -#endif - if( onError==OE_Default ){ - onError = OE_Abort; - } - if( onError!=OE_Abort && onError!=OE_Rollback ){ - return 0; /* Cannot do OR REPLACE or OR IGNORE or OR FAIL */ - } - assert(pSelect->pSrc); /* allocated even if there is no FROM clause */ - if( pSelect->pSrc->nSrc!=1 ){ - return 0; /* FROM clause must have exactly one term */ - } - if( pSelect->pSrc->a[0].pSelect ){ - return 0; /* FROM clause cannot contain a subquery */ - } - if( pSelect->pWhere ){ - return 0; /* SELECT may not have a WHERE clause */ - } - if( pSelect->pOrderBy ){ - return 0; /* SELECT may not have an ORDER BY clause */ - } - /* Do not need to test for a HAVING clause. If HAVING is present but - ** there is no ORDER BY, we will get an error. */ - if( pSelect->pGroupBy ){ - return 0; /* SELECT may not have a GROUP BY clause */ - } - if( pSelect->pLimit ){ - return 0; /* SELECT may not have a LIMIT clause */ - } - assert( pSelect->pOffset==0 ); /* Must be so if pLimit==0 */ - if( pSelect->pPrior ){ - return 0; /* SELECT may not be a compound query */ - } - if( pSelect->selFlags & SF_Distinct ){ - return 0; /* SELECT may not be DISTINCT */ - } - pEList = pSelect->pEList; - assert( pEList!=0 ); - if( pEList->nExpr!=1 ){ - return 0; /* The result set must have exactly one column */ - } - assert( pEList->a[0].pExpr ); - if( pEList->a[0].pExpr->op!=TK_ALL ){ - return 0; /* The result set must be the special operator "*" */ - } - - /* At this point we have established that the statement is of the - ** correct syntactic form to participate in this optimization. Now - ** we have to check the semantics. - */ - pItem = pSelect->pSrc->a; - pSrc = sqlite3LocateTable(pParse, 0, pItem->zName, pItem->zDatabase); - if( pSrc==0 ){ - return 0; /* FROM clause does not contain a real table */ - } - if( pSrc==pDest ){ - return 0; /* tab1 and tab2 may not be the same table */ - } -#ifndef SQLITE_OMIT_VIRTUALTABLE - if( pSrc->tabFlags & TF_Virtual ){ - return 0; /* tab2 must not be a virtual table */ - } -#endif - if( pSrc->pSelect ){ - return 0; /* tab2 may not be a view */ - } - if( pDest->nCol!=pSrc->nCol ){ - return 0; /* Number of columns must be the same in tab1 and tab2 */ - } - if( pDest->iPKey!=pSrc->iPKey ){ - return 0; /* Both tables must have the same INTEGER PRIMARY KEY */ - } - for(i=0; inCol; i++){ - if( pDest->aCol[i].affinity!=pSrc->aCol[i].affinity ){ - return 0; /* Affinity must be the same on all columns */ - } - if( !xferCompatibleCollation(pDest->aCol[i].zColl, pSrc->aCol[i].zColl) ){ - return 0; /* Collating sequence must be the same on all columns */ - } - if( pDest->aCol[i].notNull && !pSrc->aCol[i].notNull ){ - return 0; /* tab2 must be NOT NULL if tab1 is */ - } - } - for(pDestIdx=pDest->pIndex; pDestIdx; pDestIdx=pDestIdx->pNext){ - if( pDestIdx->onError!=OE_None ){ - destHasUniqueIdx = 1; - } - for(pSrcIdx=pSrc->pIndex; pSrcIdx; pSrcIdx=pSrcIdx->pNext){ - if( xferCompatibleIndex(pDestIdx, pSrcIdx) ) break; - } - if( pSrcIdx==0 ){ - return 0; /* pDestIdx has no corresponding index in pSrc */ - } - } -#ifndef SQLITE_OMIT_CHECK - if( pDest->pCheck && sqlite3ExprCompare(pSrc->pCheck, pDest->pCheck) ){ - return 0; /* Tables have different CHECK constraints. Ticket #2252 */ - } -#endif -#ifndef SQLITE_OMIT_FOREIGN_KEY - /* Disallow the transfer optimization if the destination table constains - ** any foreign key constraints. This is more restrictive than necessary. - ** But the main beneficiary of the transfer optimization is the VACUUM - ** command, and the VACUUM command disables foreign key constraints. So - ** the extra complication to make this rule less restrictive is probably - ** not worth the effort. Ticket [6284df89debdfa61db8073e062908af0c9b6118e] - */ - if( (pParse->db->flags & SQLITE_ForeignKeys)!=0 && pDest->pFKey!=0 ){ - return 0; - } -#endif - if( (pParse->db->flags & SQLITE_CountRows)!=0 ){ - return 0; - } - - /* If we get this far, it means either: - ** - ** * We can always do the transfer if the table contains an - ** an integer primary key - ** - ** * We can conditionally do the transfer if the destination - ** table is empty. - */ -#ifdef SQLITE_TEST - sqlite3_xferopt_count++; -#endif - iDbSrc = sqlite3SchemaToIndex(pParse->db, pSrc->pSchema); - v = sqlite3GetVdbe(pParse); - sqlite3CodeVerifySchema(pParse, iDbSrc); - iSrc = pParse->nTab++; - iDest = pParse->nTab++; - regAutoinc = autoIncBegin(pParse, iDbDest, pDest); - sqlite3OpenTable(pParse, iDest, iDbDest, pDest, OP_OpenWrite); - if( (pDest->iPKey<0 && pDest->pIndex!=0) || destHasUniqueIdx ){ - /* If tables do not have an INTEGER PRIMARY KEY and there - ** are indices to be copied and the destination is not empty, - ** we have to disallow the transfer optimization because the - ** the rowids might change which will mess up indexing. - ** - ** Or if the destination has a UNIQUE index and is not empty, - ** we also disallow the transfer optimization because we cannot - ** insure that all entries in the union of DEST and SRC will be - ** unique. - */ - addr1 = sqlite3VdbeAddOp2(v, OP_Rewind, iDest, 0); - emptyDestTest = sqlite3VdbeAddOp2(v, OP_Goto, 0, 0); - sqlite3VdbeJumpHere(v, addr1); - }else{ - emptyDestTest = 0; - } - sqlite3OpenTable(pParse, iSrc, iDbSrc, pSrc, OP_OpenRead); - emptySrcTest = sqlite3VdbeAddOp2(v, OP_Rewind, iSrc, 0); - regData = sqlite3GetTempReg(pParse); - regRowid = sqlite3GetTempReg(pParse); - if( pDest->iPKey>=0 ){ - addr1 = sqlite3VdbeAddOp2(v, OP_Rowid, iSrc, regRowid); - addr2 = sqlite3VdbeAddOp3(v, OP_NotExists, iDest, 0, regRowid); - sqlite3HaltConstraint( - pParse, onError, "PRIMARY KEY must be unique", P4_STATIC); - sqlite3VdbeJumpHere(v, addr2); - autoIncStep(pParse, regAutoinc, regRowid); - }else if( pDest->pIndex==0 ){ - addr1 = sqlite3VdbeAddOp2(v, OP_NewRowid, iDest, regRowid); - }else{ - addr1 = sqlite3VdbeAddOp2(v, OP_Rowid, iSrc, regRowid); - assert( (pDest->tabFlags & TF_Autoincrement)==0 ); - } - sqlite3VdbeAddOp2(v, OP_RowData, iSrc, regData); - sqlite3VdbeAddOp3(v, OP_Insert, iDest, regData, regRowid); - sqlite3VdbeChangeP5(v, OPFLAG_NCHANGE|OPFLAG_LASTROWID|OPFLAG_APPEND); - sqlite3VdbeChangeP4(v, -1, pDest->zName, 0); - sqlite3VdbeAddOp2(v, OP_Next, iSrc, addr1); - for(pDestIdx=pDest->pIndex; pDestIdx; pDestIdx=pDestIdx->pNext){ - for(pSrcIdx=pSrc->pIndex; ALWAYS(pSrcIdx); pSrcIdx=pSrcIdx->pNext){ - if( xferCompatibleIndex(pDestIdx, pSrcIdx) ) break; - } - assert( pSrcIdx ); - sqlite3VdbeAddOp2(v, OP_Close, iSrc, 0); - sqlite3VdbeAddOp2(v, OP_Close, iDest, 0); - pKey = sqlite3IndexKeyinfo(pParse, pSrcIdx); - sqlite3VdbeAddOp4(v, OP_OpenRead, iSrc, pSrcIdx->tnum, iDbSrc, - (char*)pKey, P4_KEYINFO_HANDOFF); - VdbeComment((v, "%s", pSrcIdx->zName)); - pKey = sqlite3IndexKeyinfo(pParse, pDestIdx); - sqlite3VdbeAddOp4(v, OP_OpenWrite, iDest, pDestIdx->tnum, iDbDest, - (char*)pKey, P4_KEYINFO_HANDOFF); - VdbeComment((v, "%s", pDestIdx->zName)); - addr1 = sqlite3VdbeAddOp2(v, OP_Rewind, iSrc, 0); - sqlite3VdbeAddOp2(v, OP_RowKey, iSrc, regData); - sqlite3VdbeAddOp3(v, OP_IdxInsert, iDest, regData, 1); - sqlite3VdbeAddOp2(v, OP_Next, iSrc, addr1+1); - sqlite3VdbeJumpHere(v, addr1); - } - sqlite3VdbeJumpHere(v, emptySrcTest); - sqlite3ReleaseTempReg(pParse, regRowid); - sqlite3ReleaseTempReg(pParse, regData); - sqlite3VdbeAddOp2(v, OP_Close, iSrc, 0); - sqlite3VdbeAddOp2(v, OP_Close, iDest, 0); - if( emptyDestTest ){ - sqlite3VdbeAddOp2(v, OP_Halt, SQLITE_OK, 0); - sqlite3VdbeJumpHere(v, emptyDestTest); - sqlite3VdbeAddOp2(v, OP_Close, iDest, 0); - return 0; - }else{ - return 1; - } -} -#endif /* SQLITE_OMIT_XFER_OPT */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/journal.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/journal.c deleted file mode 100644 index ff5daf29a4..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/journal.c +++ /dev/null @@ -1,238 +0,0 @@ -/* -** 2007 August 22 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** -** This file implements a special kind of sqlite3_file object used -** by SQLite to create journal files if the atomic-write optimization -** is enabled. -** -** The distinctive characteristic of this sqlite3_file is that the -** actual on disk file is created lazily. When the file is created, -** the caller specifies a buffer size for an in-memory buffer to -** be used to service read() and write() requests. The actual file -** on disk is not created or populated until either: -** -** 1) The in-memory representation grows too large for the allocated -** buffer, or -** 2) The sqlite3JournalCreate() function is called. -*/ -#ifdef SQLITE_ENABLE_ATOMIC_WRITE -#include "sqliteInt.h" - - -/* -** A JournalFile object is a subclass of sqlite3_file used by -** as an open file handle for journal files. -*/ -struct JournalFile { - sqlite3_io_methods *pMethod; /* I/O methods on journal files */ - int nBuf; /* Size of zBuf[] in bytes */ - char *zBuf; /* Space to buffer journal writes */ - int iSize; /* Amount of zBuf[] currently used */ - int flags; /* xOpen flags */ - sqlite3_vfs *pVfs; /* The "real" underlying VFS */ - sqlite3_file *pReal; /* The "real" underlying file descriptor */ - const char *zJournal; /* Name of the journal file */ -}; -typedef struct JournalFile JournalFile; - -/* -** If it does not already exists, create and populate the on-disk file -** for JournalFile p. -*/ -static int createFile(JournalFile *p){ - int rc = SQLITE_OK; - if( !p->pReal ){ - sqlite3_file *pReal = (sqlite3_file *)&p[1]; - rc = sqlite3OsOpen(p->pVfs, p->zJournal, pReal, p->flags, 0); - if( rc==SQLITE_OK ){ - p->pReal = pReal; - if( p->iSize>0 ){ - assert(p->iSize<=p->nBuf); - rc = sqlite3OsWrite(p->pReal, p->zBuf, p->iSize, 0); - } - } - } - return rc; -} - -/* -** Close the file. -*/ -static int jrnlClose(sqlite3_file *pJfd){ - JournalFile *p = (JournalFile *)pJfd; - if( p->pReal ){ - sqlite3OsClose(p->pReal); - } - sqlite3_free(p->zBuf); - return SQLITE_OK; -} - -/* -** Read data from the file. -*/ -static int jrnlRead( - sqlite3_file *pJfd, /* The journal file from which to read */ - void *zBuf, /* Put the results here */ - int iAmt, /* Number of bytes to read */ - sqlite_int64 iOfst /* Begin reading at this offset */ -){ - int rc = SQLITE_OK; - JournalFile *p = (JournalFile *)pJfd; - if( p->pReal ){ - rc = sqlite3OsRead(p->pReal, zBuf, iAmt, iOfst); - }else if( (iAmt+iOfst)>p->iSize ){ - rc = SQLITE_IOERR_SHORT_READ; - }else{ - memcpy(zBuf, &p->zBuf[iOfst], iAmt); - } - return rc; -} - -/* -** Write data to the file. -*/ -static int jrnlWrite( - sqlite3_file *pJfd, /* The journal file into which to write */ - const void *zBuf, /* Take data to be written from here */ - int iAmt, /* Number of bytes to write */ - sqlite_int64 iOfst /* Begin writing at this offset into the file */ -){ - int rc = SQLITE_OK; - JournalFile *p = (JournalFile *)pJfd; - if( !p->pReal && (iOfst+iAmt)>p->nBuf ){ - rc = createFile(p); - } - if( rc==SQLITE_OK ){ - if( p->pReal ){ - rc = sqlite3OsWrite(p->pReal, zBuf, iAmt, iOfst); - }else{ - memcpy(&p->zBuf[iOfst], zBuf, iAmt); - if( p->iSize<(iOfst+iAmt) ){ - p->iSize = (iOfst+iAmt); - } - } - } - return rc; -} - -/* -** Truncate the file. -*/ -static int jrnlTruncate(sqlite3_file *pJfd, sqlite_int64 size){ - int rc = SQLITE_OK; - JournalFile *p = (JournalFile *)pJfd; - if( p->pReal ){ - rc = sqlite3OsTruncate(p->pReal, size); - }else if( sizeiSize ){ - p->iSize = size; - } - return rc; -} - -/* -** Sync the file. -*/ -static int jrnlSync(sqlite3_file *pJfd, int flags){ - int rc; - JournalFile *p = (JournalFile *)pJfd; - if( p->pReal ){ - rc = sqlite3OsSync(p->pReal, flags); - }else{ - rc = SQLITE_OK; - } - return rc; -} - -/* -** Query the size of the file in bytes. -*/ -static int jrnlFileSize(sqlite3_file *pJfd, sqlite_int64 *pSize){ - int rc = SQLITE_OK; - JournalFile *p = (JournalFile *)pJfd; - if( p->pReal ){ - rc = sqlite3OsFileSize(p->pReal, pSize); - }else{ - *pSize = (sqlite_int64) p->iSize; - } - return rc; -} - -/* -** Table of methods for JournalFile sqlite3_file object. -*/ -static struct sqlite3_io_methods JournalFileMethods = { - 1, /* iVersion */ - jrnlClose, /* xClose */ - jrnlRead, /* xRead */ - jrnlWrite, /* xWrite */ - jrnlTruncate, /* xTruncate */ - jrnlSync, /* xSync */ - jrnlFileSize, /* xFileSize */ - 0, /* xLock */ - 0, /* xUnlock */ - 0, /* xCheckReservedLock */ - 0, /* xFileControl */ - 0, /* xSectorSize */ - 0, /* xDeviceCharacteristics */ - 0, /* xShmMap */ - 0, /* xShmLock */ - 0, /* xShmBarrier */ - 0 /* xShmUnmap */ -}; - -/* -** Open a journal file. -*/ -int sqlite3JournalOpen( - sqlite3_vfs *pVfs, /* The VFS to use for actual file I/O */ - const char *zName, /* Name of the journal file */ - sqlite3_file *pJfd, /* Preallocated, blank file handle */ - int flags, /* Opening flags */ - int nBuf /* Bytes buffered before opening the file */ -){ - JournalFile *p = (JournalFile *)pJfd; - memset(p, 0, sqlite3JournalSize(pVfs)); - if( nBuf>0 ){ - p->zBuf = sqlite3MallocZero(nBuf); - if( !p->zBuf ){ - return SQLITE_NOMEM; - } - }else{ - return sqlite3OsOpen(pVfs, zName, pJfd, flags, 0); - } - p->pMethod = &JournalFileMethods; - p->nBuf = nBuf; - p->flags = flags; - p->zJournal = zName; - p->pVfs = pVfs; - return SQLITE_OK; -} - -/* -** If the argument p points to a JournalFile structure, and the underlying -** file has not yet been created, create it now. -*/ -int sqlite3JournalCreate(sqlite3_file *p){ - if( p->pMethods!=&JournalFileMethods ){ - return SQLITE_OK; - } - return createFile((JournalFile *)p); -} - -/* -** Return the number of bytes required to store a JournalFile that uses vfs -** pVfs to create the underlying on-disk files. -*/ -int sqlite3JournalSize(sqlite3_vfs *pVfs){ - return (pVfs->szOsFile+sizeof(JournalFile)); -} -#endif diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/legacy.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/legacy.c deleted file mode 100644 index 888675898e..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/legacy.c +++ /dev/null @@ -1,145 +0,0 @@ -/* -** 2001 September 15 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** Main file for the SQLite library. The routines in this file -** implement the programmer interface to the library. Routines in -** other files are for internal use by SQLite and should not be -** accessed by users of the library. -*/ - -#include "sqliteInt.h" - -/* -** Execute SQL code. Return one of the SQLITE_ success/failure -** codes. Also write an error message into memory obtained from -** malloc() and make *pzErrMsg point to that message. -** -** If the SQL is a query, then for each row in the query result -** the xCallback() function is called. pArg becomes the first -** argument to xCallback(). If xCallback=NULL then no callback -** is invoked, even for queries. -*/ -int sqlite3_exec( - sqlite3 *db, /* The database on which the SQL executes */ - const char *zSql, /* The SQL to be executed */ - sqlite3_callback xCallback, /* Invoke this callback routine */ - void *pArg, /* First argument to xCallback() */ - char **pzErrMsg /* Write error messages here */ -){ - int rc = SQLITE_OK; /* Return code */ - const char *zLeftover; /* Tail of unprocessed SQL */ - sqlite3_stmt *pStmt = 0; /* The current SQL statement */ - char **azCols = 0; /* Names of result columns */ - int nRetry = 0; /* Number of retry attempts */ - int callbackIsInit; /* True if callback data is initialized */ - - if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT; - if( zSql==0 ) zSql = ""; - - sqlite3_mutex_enter(db->mutex); - sqlite3Error(db, SQLITE_OK, 0); - while( (rc==SQLITE_OK || (rc==SQLITE_SCHEMA && (++nRetry)<2)) && zSql[0] ){ - int nCol; - char **azVals = 0; - - pStmt = 0; - rc = sqlite3_prepare(db, zSql, -1, &pStmt, &zLeftover); - assert( rc==SQLITE_OK || pStmt==0 ); - if( rc!=SQLITE_OK ){ - continue; - } - if( !pStmt ){ - /* this happens for a comment or white-space */ - zSql = zLeftover; - continue; - } - - callbackIsInit = 0; - nCol = sqlite3_column_count(pStmt); - - while( 1 ){ - int i; - rc = sqlite3_step(pStmt); - - /* Invoke the callback function if required */ - if( xCallback && (SQLITE_ROW==rc || - (SQLITE_DONE==rc && !callbackIsInit - && db->flags&SQLITE_NullCallback)) ){ - if( !callbackIsInit ){ - azCols = sqlite3DbMallocZero(db, 2*nCol*sizeof(const char*) + 1); - if( azCols==0 ){ - goto exec_out; - } - for(i=0; imallocFailed = 1; - goto exec_out; - } - } - } - if( xCallback(pArg, nCol, azVals, azCols) ){ - rc = SQLITE_ABORT; - sqlite3VdbeFinalize((Vdbe *)pStmt); - pStmt = 0; - sqlite3Error(db, SQLITE_ABORT, 0); - goto exec_out; - } - } - - if( rc!=SQLITE_ROW ){ - rc = sqlite3VdbeFinalize((Vdbe *)pStmt); - pStmt = 0; - if( rc!=SQLITE_SCHEMA ){ - nRetry = 0; - zSql = zLeftover; - while( sqlite3Isspace(zSql[0]) ) zSql++; - } - break; - } - } - - sqlite3DbFree(db, azCols); - azCols = 0; - } - -exec_out: - if( pStmt ) sqlite3VdbeFinalize((Vdbe *)pStmt); - sqlite3DbFree(db, azCols); - - rc = sqlite3ApiExit(db, rc); - if( rc!=SQLITE_OK && ALWAYS(rc==sqlite3_errcode(db)) && pzErrMsg ){ - int nErrMsg = 1 + sqlite3Strlen30(sqlite3_errmsg(db)); - *pzErrMsg = sqlite3Malloc(nErrMsg); - if( *pzErrMsg ){ - memcpy(*pzErrMsg, sqlite3_errmsg(db), nErrMsg); - }else{ - rc = SQLITE_NOMEM; - sqlite3Error(db, SQLITE_NOMEM, 0); - } - }else if( pzErrMsg ){ - *pzErrMsg = 0; - } - - assert( (rc&db->errMask)==rc ); - sqlite3_mutex_leave(db->mutex); - return rc; -} diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/lempar.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/lempar.c deleted file mode 100644 index 1443ed6e75..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/lempar.c +++ /dev/null @@ -1,863 +0,0 @@ -/* Driver template for the LEMON parser generator. -** The author disclaims copyright to this source code. -** -** This version of "lempar.c" is modified, slightly, for use by SQLite. -** The only modifications are the addition of a couple of NEVER() -** macros to disable tests that are needed in the case of a general -** LALR(1) grammar but which are always false in the -** specific grammar used by SQLite. -*/ -/* First off, code is included that follows the "include" declaration -** in the input grammar file. */ -#include -%% -/* Next is all token values, in a form suitable for use by makeheaders. -** This section will be null unless lemon is run with the -m switch. -*/ -/* -** These constants (all generated automatically by the parser generator) -** specify the various kinds of tokens (terminals) that the parser -** understands. -** -** Each symbol here is a terminal symbol in the grammar. -*/ -%% -/* Make sure the INTERFACE macro is defined. -*/ -#ifndef INTERFACE -# define INTERFACE 1 -#endif -/* The next thing included is series of defines which control -** various aspects of the generated parser. -** YYCODETYPE is the data type used for storing terminal -** and nonterminal numbers. "unsigned char" is -** used if there are fewer than 250 terminals -** and nonterminals. "int" is used otherwise. -** YYNOCODE is a number of type YYCODETYPE which corresponds -** to no legal terminal or nonterminal number. This -** number is used to fill in empty slots of the hash -** table. -** YYFALLBACK If defined, this indicates that one or more tokens -** have fall-back values which should be used if the -** original value of the token will not parse. -** YYACTIONTYPE is the data type used for storing terminal -** and nonterminal numbers. "unsigned char" is -** used if there are fewer than 250 rules and -** states combined. "int" is used otherwise. -** ParseTOKENTYPE is the data type used for minor tokens given -** directly to the parser from the tokenizer. -** YYMINORTYPE is the data type used for all minor tokens. -** This is typically a union of many types, one of -** which is ParseTOKENTYPE. The entry in the union -** for base tokens is called "yy0". -** YYSTACKDEPTH is the maximum depth of the parser's stack. If -** zero the stack is dynamically sized using realloc() -** ParseARG_SDECL A static variable declaration for the %extra_argument -** ParseARG_PDECL A parameter declaration for the %extra_argument -** ParseARG_STORE Code to store %extra_argument into yypParser -** ParseARG_FETCH Code to extract %extra_argument from yypParser -** YYNSTATE the combined number of states. -** YYNRULE the number of rules in the grammar -** YYERRORSYMBOL is the code number of the error symbol. If not -** defined, then do no error processing. -*/ -%% -#define YY_NO_ACTION (YYNSTATE+YYNRULE+2) -#define YY_ACCEPT_ACTION (YYNSTATE+YYNRULE+1) -#define YY_ERROR_ACTION (YYNSTATE+YYNRULE) - -/* The yyzerominor constant is used to initialize instances of -** YYMINORTYPE objects to zero. */ -static const YYMINORTYPE yyzerominor = { 0 }; - -/* Define the yytestcase() macro to be a no-op if is not already defined -** otherwise. -** -** Applications can choose to define yytestcase() in the %include section -** to a macro that can assist in verifying code coverage. For production -** code the yytestcase() macro should be turned off. But it is useful -** for testing. -*/ -#ifndef yytestcase -# define yytestcase(X) -#endif - - -/* Next are the tables used to determine what action to take based on the -** current state and lookahead token. These tables are used to implement -** functions that take a state number and lookahead value and return an -** action integer. -** -** Suppose the action integer is N. Then the action is determined as -** follows -** -** 0 <= N < YYNSTATE Shift N. That is, push the lookahead -** token onto the stack and goto state N. -** -** YYNSTATE <= N < YYNSTATE+YYNRULE Reduce by rule N-YYNSTATE. -** -** N == YYNSTATE+YYNRULE A syntax error has occurred. -** -** N == YYNSTATE+YYNRULE+1 The parser accepts its input. -** -** N == YYNSTATE+YYNRULE+2 No such action. Denotes unused -** slots in the yy_action[] table. -** -** The action table is constructed as a single large table named yy_action[]. -** Given state S and lookahead X, the action is computed as -** -** yy_action[ yy_shift_ofst[S] + X ] -** -** If the index value yy_shift_ofst[S]+X is out of range or if the value -** yy_lookahead[yy_shift_ofst[S]+X] is not equal to X or if yy_shift_ofst[S] -** is equal to YY_SHIFT_USE_DFLT, it means that the action is not in the table -** and that yy_default[S] should be used instead. -** -** The formula above is for computing the action when the lookahead is -** a terminal symbol. If the lookahead is a non-terminal (as occurs after -** a reduce action) then the yy_reduce_ofst[] array is used in place of -** the yy_shift_ofst[] array and YY_REDUCE_USE_DFLT is used in place of -** YY_SHIFT_USE_DFLT. -** -** The following are the tables generated in this section: -** -** yy_action[] A single table containing all actions. -** yy_lookahead[] A table containing the lookahead for each entry in -** yy_action. Used to detect hash collisions. -** yy_shift_ofst[] For each state, the offset into yy_action for -** shifting terminals. -** yy_reduce_ofst[] For each state, the offset into yy_action for -** shifting non-terminals after a reduce. -** yy_default[] Default action for each state. -*/ -%% - -/* The next table maps tokens into fallback tokens. If a construct -** like the following: -** -** %fallback ID X Y Z. -** -** appears in the grammar, then ID becomes a fallback token for X, Y, -** and Z. Whenever one of the tokens X, Y, or Z is input to the parser -** but it does not parse, the type of the token is changed to ID and -** the parse is retried before an error is thrown. -*/ -#ifdef YYFALLBACK -static const YYCODETYPE yyFallback[] = { -%% -}; -#endif /* YYFALLBACK */ - -/* The following structure represents a single element of the -** parser's stack. Information stored includes: -** -** + The state number for the parser at this level of the stack. -** -** + The value of the token stored at this level of the stack. -** (In other words, the "major" token.) -** -** + The semantic value stored at this level of the stack. This is -** the information used by the action routines in the grammar. -** It is sometimes called the "minor" token. -*/ -struct yyStackEntry { - YYACTIONTYPE stateno; /* The state-number */ - YYCODETYPE major; /* The major token value. This is the code - ** number for the token at this stack level */ - YYMINORTYPE minor; /* The user-supplied minor token value. This - ** is the value of the token */ -}; -typedef struct yyStackEntry yyStackEntry; - -/* The state of the parser is completely contained in an instance of -** the following structure */ -struct yyParser { - int yyidx; /* Index of top element in stack */ -#ifdef YYTRACKMAXSTACKDEPTH - int yyidxMax; /* Maximum value of yyidx */ -#endif - int yyerrcnt; /* Shifts left before out of the error */ - ParseARG_SDECL /* A place to hold %extra_argument */ -#if YYSTACKDEPTH<=0 - int yystksz; /* Current side of the stack */ - yyStackEntry *yystack; /* The parser's stack */ -#else - yyStackEntry yystack[YYSTACKDEPTH]; /* The parser's stack */ -#endif -}; -typedef struct yyParser yyParser; - -#ifndef NDEBUG -#include -static FILE *yyTraceFILE = 0; -static char *yyTracePrompt = 0; -#endif /* NDEBUG */ - -#ifndef NDEBUG -/* -** Turn parser tracing on by giving a stream to which to write the trace -** and a prompt to preface each trace message. Tracing is turned off -** by making either argument NULL -** -** Inputs: -**
    -**
  • A FILE* to which trace output should be written. -** If NULL, then tracing is turned off. -**
  • A prefix string written at the beginning of every -** line of trace output. If NULL, then tracing is -** turned off. -**
-** -** Outputs: -** None. -*/ -void ParseTrace(FILE *TraceFILE, char *zTracePrompt){ - yyTraceFILE = TraceFILE; - yyTracePrompt = zTracePrompt; - if( yyTraceFILE==0 ) yyTracePrompt = 0; - else if( yyTracePrompt==0 ) yyTraceFILE = 0; -} -#endif /* NDEBUG */ - -#ifndef NDEBUG -/* For tracing shifts, the names of all terminals and nonterminals -** are required. The following table supplies these names */ -static const char *const yyTokenName[] = { -%% -}; -#endif /* NDEBUG */ - -#ifndef NDEBUG -/* For tracing reduce actions, the names of all rules are required. -*/ -static const char *const yyRuleName[] = { -%% -}; -#endif /* NDEBUG */ - - -#if YYSTACKDEPTH<=0 -/* -** Try to increase the size of the parser stack. -*/ -static void yyGrowStack(yyParser *p){ - int newSize; - yyStackEntry *pNew; - - newSize = p->yystksz*2 + 100; - pNew = realloc(p->yystack, newSize*sizeof(pNew[0])); - if( pNew ){ - p->yystack = pNew; - p->yystksz = newSize; -#ifndef NDEBUG - if( yyTraceFILE ){ - fprintf(yyTraceFILE,"%sStack grows to %d entries!\n", - yyTracePrompt, p->yystksz); - } -#endif - } -} -#endif - -/* -** This function allocates a new parser. -** The only argument is a pointer to a function which works like -** malloc. -** -** Inputs: -** A pointer to the function used to allocate memory. -** -** Outputs: -** A pointer to a parser. This pointer is used in subsequent calls -** to Parse and ParseFree. -*/ -void *ParseAlloc(void *(*mallocProc)(size_t)){ - yyParser *pParser; - pParser = (yyParser*)(*mallocProc)( (size_t)sizeof(yyParser) ); - if( pParser ){ - pParser->yyidx = -1; -#ifdef YYTRACKMAXSTACKDEPTH - pParser->yyidxMax = 0; -#endif -#if YYSTACKDEPTH<=0 - pParser->yystack = NULL; - pParser->yystksz = 0; - yyGrowStack(pParser); -#endif - } - return pParser; -} - -/* The following function deletes the value associated with a -** symbol. The symbol can be either a terminal or nonterminal. -** "yymajor" is the symbol code, and "yypminor" is a pointer to -** the value. -*/ -static void yy_destructor( - yyParser *yypParser, /* The parser */ - YYCODETYPE yymajor, /* Type code for object to destroy */ - YYMINORTYPE *yypminor /* The object to be destroyed */ -){ - ParseARG_FETCH; - switch( yymajor ){ - /* Here is inserted the actions which take place when a - ** terminal or non-terminal is destroyed. This can happen - ** when the symbol is popped from the stack during a - ** reduce or during error processing or when a parser is - ** being destroyed before it is finished parsing. - ** - ** Note: during a reduce, the only symbols destroyed are those - ** which appear on the RHS of the rule, but which are not used - ** inside the C code. - */ -%% - default: break; /* If no destructor action specified: do nothing */ - } -} - -/* -** Pop the parser's stack once. -** -** If there is a destructor routine associated with the token which -** is popped from the stack, then call it. -** -** Return the major token number for the symbol popped. -*/ -static int yy_pop_parser_stack(yyParser *pParser){ - YYCODETYPE yymajor; - yyStackEntry *yytos = &pParser->yystack[pParser->yyidx]; - - /* There is no mechanism by which the parser stack can be popped below - ** empty in SQLite. */ - if( NEVER(pParser->yyidx<0) ) return 0; -#ifndef NDEBUG - if( yyTraceFILE && pParser->yyidx>=0 ){ - fprintf(yyTraceFILE,"%sPopping %s\n", - yyTracePrompt, - yyTokenName[yytos->major]); - } -#endif - yymajor = yytos->major; - yy_destructor(pParser, yymajor, &yytos->minor); - pParser->yyidx--; - return yymajor; -} - -/* -** Deallocate and destroy a parser. Destructors are all called for -** all stack elements before shutting the parser down. -** -** Inputs: -**
    -**
  • A pointer to the parser. This should be a pointer -** obtained from ParseAlloc. -**
  • A pointer to a function used to reclaim memory obtained -** from malloc. -**
-*/ -void ParseFree( - void *p, /* The parser to be deleted */ - void (*freeProc)(void*) /* Function used to reclaim memory */ -){ - yyParser *pParser = (yyParser*)p; - /* In SQLite, we never try to destroy a parser that was not successfully - ** created in the first place. */ - if( NEVER(pParser==0) ) return; - while( pParser->yyidx>=0 ) yy_pop_parser_stack(pParser); -#if YYSTACKDEPTH<=0 - free(pParser->yystack); -#endif - (*freeProc)((void*)pParser); -} - -/* -** Return the peak depth of the stack for a parser. -*/ -#ifdef YYTRACKMAXSTACKDEPTH -int ParseStackPeak(void *p){ - yyParser *pParser = (yyParser*)p; - return pParser->yyidxMax; -} -#endif - -/* -** Find the appropriate action for a parser given the terminal -** look-ahead token iLookAhead. -** -** If the look-ahead token is YYNOCODE, then check to see if the action is -** independent of the look-ahead. If it is, return the action, otherwise -** return YY_NO_ACTION. -*/ -static int yy_find_shift_action( - yyParser *pParser, /* The parser */ - YYCODETYPE iLookAhead /* The look-ahead token */ -){ - int i; - int stateno = pParser->yystack[pParser->yyidx].stateno; - - if( stateno>YY_SHIFT_COUNT - || (i = yy_shift_ofst[stateno])==YY_SHIFT_USE_DFLT ){ - return yy_default[stateno]; - } - assert( iLookAhead!=YYNOCODE ); - i += iLookAhead; - if( i<0 || i>=YY_ACTTAB_COUNT || yy_lookahead[i]!=iLookAhead ){ - if( iLookAhead>0 ){ -#ifdef YYFALLBACK - YYCODETYPE iFallback; /* Fallback token */ - if( iLookAhead %s\n", - yyTracePrompt, yyTokenName[iLookAhead], yyTokenName[iFallback]); - } -#endif - return yy_find_shift_action(pParser, iFallback); - } -#endif -#ifdef YYWILDCARD - { - int j = i - iLookAhead + YYWILDCARD; - if( -#if YY_SHIFT_MIN+YYWILDCARD<0 - j>=0 && -#endif -#if YY_SHIFT_MAX+YYWILDCARD>=YY_ACTTAB_COUNT - j %s\n", - yyTracePrompt, yyTokenName[iLookAhead], yyTokenName[YYWILDCARD]); - } -#endif /* NDEBUG */ - return yy_action[j]; - } - } -#endif /* YYWILDCARD */ - } - return yy_default[stateno]; - }else{ - return yy_action[i]; - } -} - -/* -** Find the appropriate action for a parser given the non-terminal -** look-ahead token iLookAhead. -** -** If the look-ahead token is YYNOCODE, then check to see if the action is -** independent of the look-ahead. If it is, return the action, otherwise -** return YY_NO_ACTION. -*/ -static int yy_find_reduce_action( - int stateno, /* Current state number */ - YYCODETYPE iLookAhead /* The look-ahead token */ -){ - int i; -#ifdef YYERRORSYMBOL - if( stateno>YY_REDUCE_COUNT ){ - return yy_default[stateno]; - } -#else - assert( stateno<=YY_REDUCE_COUNT ); -#endif - i = yy_reduce_ofst[stateno]; - assert( i!=YY_REDUCE_USE_DFLT ); - assert( iLookAhead!=YYNOCODE ); - i += iLookAhead; -#ifdef YYERRORSYMBOL - if( i<0 || i>=YY_ACTTAB_COUNT || yy_lookahead[i]!=iLookAhead ){ - return yy_default[stateno]; - } -#else - assert( i>=0 && iyyidx--; -#ifndef NDEBUG - if( yyTraceFILE ){ - fprintf(yyTraceFILE,"%sStack Overflow!\n",yyTracePrompt); - } -#endif - while( yypParser->yyidx>=0 ) yy_pop_parser_stack(yypParser); - /* Here code is inserted which will execute if the parser - ** stack every overflows */ -%% - ParseARG_STORE; /* Suppress warning about unused %extra_argument var */ -} - -/* -** Perform a shift action. -*/ -static void yy_shift( - yyParser *yypParser, /* The parser to be shifted */ - int yyNewState, /* The new state to shift in */ - int yyMajor, /* The major token to shift in */ - YYMINORTYPE *yypMinor /* Pointer to the minor token to shift in */ -){ - yyStackEntry *yytos; - yypParser->yyidx++; -#ifdef YYTRACKMAXSTACKDEPTH - if( yypParser->yyidx>yypParser->yyidxMax ){ - yypParser->yyidxMax = yypParser->yyidx; - } -#endif -#if YYSTACKDEPTH>0 - if( yypParser->yyidx>=YYSTACKDEPTH ){ - yyStackOverflow(yypParser, yypMinor); - return; - } -#else - if( yypParser->yyidx>=yypParser->yystksz ){ - yyGrowStack(yypParser); - if( yypParser->yyidx>=yypParser->yystksz ){ - yyStackOverflow(yypParser, yypMinor); - return; - } - } -#endif - yytos = &yypParser->yystack[yypParser->yyidx]; - yytos->stateno = (YYACTIONTYPE)yyNewState; - yytos->major = (YYCODETYPE)yyMajor; - yytos->minor = *yypMinor; -#ifndef NDEBUG - if( yyTraceFILE && yypParser->yyidx>0 ){ - int i; - fprintf(yyTraceFILE,"%sShift %d\n",yyTracePrompt,yyNewState); - fprintf(yyTraceFILE,"%sStack:",yyTracePrompt); - for(i=1; i<=yypParser->yyidx; i++) - fprintf(yyTraceFILE," %s",yyTokenName[yypParser->yystack[i].major]); - fprintf(yyTraceFILE,"\n"); - } -#endif -} - -/* The following table contains information about every rule that -** is used during the reduce. -*/ -static const struct { - YYCODETYPE lhs; /* Symbol on the left-hand side of the rule */ - unsigned char nrhs; /* Number of right-hand side symbols in the rule */ -} yyRuleInfo[] = { -%% -}; - -static void yy_accept(yyParser*); /* Forward Declaration */ - -/* -** Perform a reduce action and the shift that must immediately -** follow the reduce. -*/ -static void yy_reduce( - yyParser *yypParser, /* The parser */ - int yyruleno /* Number of the rule by which to reduce */ -){ - int yygoto; /* The next state */ - int yyact; /* The next action */ - YYMINORTYPE yygotominor; /* The LHS of the rule reduced */ - yyStackEntry *yymsp; /* The top of the parser's stack */ - int yysize; /* Amount to pop the stack */ - ParseARG_FETCH; - yymsp = &yypParser->yystack[yypParser->yyidx]; -#ifndef NDEBUG - if( yyTraceFILE && yyruleno>=0 - && yyruleno<(int)(sizeof(yyRuleName)/sizeof(yyRuleName[0])) ){ - fprintf(yyTraceFILE, "%sReduce [%s].\n", yyTracePrompt, - yyRuleName[yyruleno]); - } -#endif /* NDEBUG */ - - /* Silence complaints from purify about yygotominor being uninitialized - ** in some cases when it is copied into the stack after the following - ** switch. yygotominor is uninitialized when a rule reduces that does - ** not set the value of its left-hand side nonterminal. Leaving the - ** value of the nonterminal uninitialized is utterly harmless as long - ** as the value is never used. So really the only thing this code - ** accomplishes is to quieten purify. - ** - ** 2007-01-16: The wireshark project (www.wireshark.org) reports that - ** without this code, their parser segfaults. I'm not sure what there - ** parser is doing to make this happen. This is the second bug report - ** from wireshark this week. Clearly they are stressing Lemon in ways - ** that it has not been previously stressed... (SQLite ticket #2172) - */ - /*memset(&yygotominor, 0, sizeof(yygotominor));*/ - yygotominor = yyzerominor; - - - switch( yyruleno ){ - /* Beginning here are the reduction cases. A typical example - ** follows: - ** case 0: - ** #line - ** { ... } // User supplied code - ** #line - ** break; - */ -%% - }; - yygoto = yyRuleInfo[yyruleno].lhs; - yysize = yyRuleInfo[yyruleno].nrhs; - yypParser->yyidx -= yysize; - yyact = yy_find_reduce_action(yymsp[-yysize].stateno,(YYCODETYPE)yygoto); - if( yyact < YYNSTATE ){ -#ifdef NDEBUG - /* If we are not debugging and the reduce action popped at least - ** one element off the stack, then we can push the new element back - ** onto the stack here, and skip the stack overflow test in yy_shift(). - ** That gives a significant speed improvement. */ - if( yysize ){ - yypParser->yyidx++; - yymsp -= yysize-1; - yymsp->stateno = (YYACTIONTYPE)yyact; - yymsp->major = (YYCODETYPE)yygoto; - yymsp->minor = yygotominor; - }else -#endif - { - yy_shift(yypParser,yyact,yygoto,&yygotominor); - } - }else{ - assert( yyact == YYNSTATE + YYNRULE + 1 ); - yy_accept(yypParser); - } -} - -/* -** The following code executes when the parse fails -*/ -#ifndef YYNOERRORRECOVERY -static void yy_parse_failed( - yyParser *yypParser /* The parser */ -){ - ParseARG_FETCH; -#ifndef NDEBUG - if( yyTraceFILE ){ - fprintf(yyTraceFILE,"%sFail!\n",yyTracePrompt); - } -#endif - while( yypParser->yyidx>=0 ) yy_pop_parser_stack(yypParser); - /* Here code is inserted which will be executed whenever the - ** parser fails */ -%% - ParseARG_STORE; /* Suppress warning about unused %extra_argument variable */ -} -#endif /* YYNOERRORRECOVERY */ - -/* -** The following code executes when a syntax error first occurs. -*/ -static void yy_syntax_error( - yyParser *yypParser, /* The parser */ - int yymajor, /* The major type of the error token */ - YYMINORTYPE yyminor /* The minor type of the error token */ -){ - ParseARG_FETCH; -#define TOKEN (yyminor.yy0) -%% - ParseARG_STORE; /* Suppress warning about unused %extra_argument variable */ -} - -/* -** The following is executed when the parser accepts -*/ -static void yy_accept( - yyParser *yypParser /* The parser */ -){ - ParseARG_FETCH; -#ifndef NDEBUG - if( yyTraceFILE ){ - fprintf(yyTraceFILE,"%sAccept!\n",yyTracePrompt); - } -#endif - while( yypParser->yyidx>=0 ) yy_pop_parser_stack(yypParser); - /* Here code is inserted which will be executed whenever the - ** parser accepts */ -%% - ParseARG_STORE; /* Suppress warning about unused %extra_argument variable */ -} - -/* The main parser program. -** The first argument is a pointer to a structure obtained from -** "ParseAlloc" which describes the current state of the parser. -** The second argument is the major token number. The third is -** the minor token. The fourth optional argument is whatever the -** user wants (and specified in the grammar) and is available for -** use by the action routines. -** -** Inputs: -**
    -**
  • A pointer to the parser (an opaque structure.) -**
  • The major token number. -**
  • The minor token number. -**
  • An option argument of a grammar-specified type. -**
-** -** Outputs: -** None. -*/ -void Parse( - void *yyp, /* The parser */ - int yymajor, /* The major token code number */ - ParseTOKENTYPE yyminor /* The value for the token */ - ParseARG_PDECL /* Optional %extra_argument parameter */ -){ - YYMINORTYPE yyminorunion; - int yyact; /* The parser action. */ -#if !defined(YYERRORSYMBOL) && !defined(YYNOERRORRECOVERY) - int yyendofinput; /* True if we are at the end of input */ -#endif -#ifdef YYERRORSYMBOL - int yyerrorhit = 0; /* True if yymajor has invoked an error */ -#endif - yyParser *yypParser; /* The parser */ - - /* (re)initialize the parser, if necessary */ - yypParser = (yyParser*)yyp; - if( yypParser->yyidx<0 ){ -#if YYSTACKDEPTH<=0 - if( yypParser->yystksz <=0 ){ - /*memset(&yyminorunion, 0, sizeof(yyminorunion));*/ - yyminorunion = yyzerominor; - yyStackOverflow(yypParser, &yyminorunion); - return; - } -#endif - yypParser->yyidx = 0; - yypParser->yyerrcnt = -1; - yypParser->yystack[0].stateno = 0; - yypParser->yystack[0].major = 0; - } - yyminorunion.yy0 = yyminor; -#if !defined(YYERRORSYMBOL) && !defined(YYNOERRORRECOVERY) - yyendofinput = (yymajor==0); -#endif - ParseARG_STORE; - -#ifndef NDEBUG - if( yyTraceFILE ){ - fprintf(yyTraceFILE,"%sInput %s\n",yyTracePrompt,yyTokenName[yymajor]); - } -#endif - - do{ - yyact = yy_find_shift_action(yypParser,(YYCODETYPE)yymajor); - if( yyactyyerrcnt--; - yymajor = YYNOCODE; - }else if( yyact < YYNSTATE + YYNRULE ){ - yy_reduce(yypParser,yyact-YYNSTATE); - }else{ - assert( yyact == YY_ERROR_ACTION ); -#ifdef YYERRORSYMBOL - int yymx; -#endif -#ifndef NDEBUG - if( yyTraceFILE ){ - fprintf(yyTraceFILE,"%sSyntax Error!\n",yyTracePrompt); - } -#endif -#ifdef YYERRORSYMBOL - /* A syntax error has occurred. - ** The response to an error depends upon whether or not the - ** grammar defines an error token "ERROR". - ** - ** This is what we do if the grammar does define ERROR: - ** - ** * Call the %syntax_error function. - ** - ** * Begin popping the stack until we enter a state where - ** it is legal to shift the error symbol, then shift - ** the error symbol. - ** - ** * Set the error count to three. - ** - ** * Begin accepting and shifting new tokens. No new error - ** processing will occur until three tokens have been - ** shifted successfully. - ** - */ - if( yypParser->yyerrcnt<0 ){ - yy_syntax_error(yypParser,yymajor,yyminorunion); - } - yymx = yypParser->yystack[yypParser->yyidx].major; - if( yymx==YYERRORSYMBOL || yyerrorhit ){ -#ifndef NDEBUG - if( yyTraceFILE ){ - fprintf(yyTraceFILE,"%sDiscard input token %s\n", - yyTracePrompt,yyTokenName[yymajor]); - } -#endif - yy_destructor(yypParser, (YYCODETYPE)yymajor,&yyminorunion); - yymajor = YYNOCODE; - }else{ - while( - yypParser->yyidx >= 0 && - yymx != YYERRORSYMBOL && - (yyact = yy_find_reduce_action( - yypParser->yystack[yypParser->yyidx].stateno, - YYERRORSYMBOL)) >= YYNSTATE - ){ - yy_pop_parser_stack(yypParser); - } - if( yypParser->yyidx < 0 || yymajor==0 ){ - yy_destructor(yypParser,(YYCODETYPE)yymajor,&yyminorunion); - yy_parse_failed(yypParser); - yymajor = YYNOCODE; - }else if( yymx!=YYERRORSYMBOL ){ - YYMINORTYPE u2; - u2.YYERRSYMDT = 0; - yy_shift(yypParser,yyact,YYERRORSYMBOL,&u2); - } - } - yypParser->yyerrcnt = 3; - yyerrorhit = 1; -#elif defined(YYNOERRORRECOVERY) - /* If the YYNOERRORRECOVERY macro is defined, then do not attempt to - ** do any kind of error recovery. Instead, simply invoke the syntax - ** error routine and continue going as if nothing had happened. - ** - ** Applications can set this macro (for example inside %include) if - ** they intend to abandon the parse upon the first syntax error seen. - */ - yy_syntax_error(yypParser,yymajor,yyminorunion); - yy_destructor(yypParser,(YYCODETYPE)yymajor,&yyminorunion); - yymajor = YYNOCODE; - -#else /* YYERRORSYMBOL is not defined */ - /* This is what we do if the grammar does not define ERROR: - ** - ** * Report an error message, and throw away the input token. - ** - ** * If the input token is $, then fail the parse. - ** - ** As before, subsequent error messages are suppressed until - ** three input tokens have been successfully shifted. - */ - if( yypParser->yyerrcnt<=0 ){ - yy_syntax_error(yypParser,yymajor,yyminorunion); - } - yypParser->yyerrcnt = 3; - yy_destructor(yypParser,(YYCODETYPE)yymajor,&yyminorunion); - if( yyendofinput ){ - yy_parse_failed(yypParser); - } - yymajor = YYNOCODE; -#endif - } - }while( yymajor!=YYNOCODE && yypParser->yyidx>=0 ); - return; -} diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/loadext.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/loadext.c deleted file mode 100644 index 31fa1b7016..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/loadext.c +++ /dev/null @@ -1,657 +0,0 @@ -/* -** 2006 June 7 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file contains code used to dynamically load extensions into -** the SQLite library. -*/ - -#ifndef SQLITE_CORE - #define SQLITE_CORE 1 /* Disable the API redefinition in sqlite3ext.h */ -#endif -#include "sqlite3ext.h" -#include "sqliteInt.h" -#include - -#ifndef SQLITE_OMIT_LOAD_EXTENSION - -/* -** Some API routines are omitted when various features are -** excluded from a build of SQLite. Substitute a NULL pointer -** for any missing APIs. -*/ -#ifndef SQLITE_ENABLE_COLUMN_METADATA -# define sqlite3_column_database_name 0 -# define sqlite3_column_database_name16 0 -# define sqlite3_column_table_name 0 -# define sqlite3_column_table_name16 0 -# define sqlite3_column_origin_name 0 -# define sqlite3_column_origin_name16 0 -# define sqlite3_table_column_metadata 0 -#endif - -#ifdef SQLITE_OMIT_AUTHORIZATION -# define sqlite3_set_authorizer 0 -#endif - -#ifdef SQLITE_OMIT_UTF16 -# define sqlite3_bind_text16 0 -# define sqlite3_collation_needed16 0 -# define sqlite3_column_decltype16 0 -# define sqlite3_column_name16 0 -# define sqlite3_column_text16 0 -# define sqlite3_complete16 0 -# define sqlite3_create_collation16 0 -# define sqlite3_create_function16 0 -# define sqlite3_errmsg16 0 -# define sqlite3_open16 0 -# define sqlite3_prepare16 0 -# define sqlite3_prepare16_v2 0 -# define sqlite3_result_error16 0 -# define sqlite3_result_text16 0 -# define sqlite3_result_text16be 0 -# define sqlite3_result_text16le 0 -# define sqlite3_value_text16 0 -# define sqlite3_value_text16be 0 -# define sqlite3_value_text16le 0 -# define sqlite3_column_database_name16 0 -# define sqlite3_column_table_name16 0 -# define sqlite3_column_origin_name16 0 -#endif - -#ifdef SQLITE_OMIT_COMPLETE -# define sqlite3_complete 0 -# define sqlite3_complete16 0 -#endif - -#ifdef SQLITE_OMIT_DECLTYPE -# define sqlite3_column_decltype16 0 -# define sqlite3_column_decltype 0 -#endif - -#ifdef SQLITE_OMIT_PROGRESS_CALLBACK -# define sqlite3_progress_handler 0 -#endif - -#ifdef SQLITE_OMIT_VIRTUALTABLE -# define sqlite3_create_module 0 -# define sqlite3_create_module_v2 0 -# define sqlite3_declare_vtab 0 -# define sqlite3_vtab_config 0 -# define sqlite3_vtab_on_conflict 0 -#endif - -#ifdef SQLITE_OMIT_SHARED_CACHE -# define sqlite3_enable_shared_cache 0 -#endif - -#ifdef SQLITE_OMIT_TRACE -# define sqlite3_profile 0 -# define sqlite3_trace 0 -#endif - -#ifdef SQLITE_OMIT_GET_TABLE -# define sqlite3_free_table 0 -# define sqlite3_get_table 0 -#endif - -#ifdef SQLITE_OMIT_INCRBLOB -#define sqlite3_bind_zeroblob 0 -#define sqlite3_blob_bytes 0 -#define sqlite3_blob_close 0 -#define sqlite3_blob_open 0 -#define sqlite3_blob_read 0 -#define sqlite3_blob_write 0 -#define sqlite3_blob_reopen 0 -#endif - -/* -** The following structure contains pointers to all SQLite API routines. -** A pointer to this structure is passed into extensions when they are -** loaded so that the extension can make calls back into the SQLite -** library. -** -** When adding new APIs, add them to the bottom of this structure -** in order to preserve backwards compatibility. -** -** Extensions that use newer APIs should first call the -** sqlite3_libversion_number() to make sure that the API they -** intend to use is supported by the library. Extensions should -** also check to make sure that the pointer to the function is -** not NULL before calling it. -*/ -static const sqlite3_api_routines sqlite3Apis = { - sqlite3_aggregate_context, -#ifndef SQLITE_OMIT_DEPRECATED - sqlite3_aggregate_count, -#else - 0, -#endif - sqlite3_bind_blob, - sqlite3_bind_double, - sqlite3_bind_int, - sqlite3_bind_int64, - sqlite3_bind_null, - sqlite3_bind_parameter_count, - sqlite3_bind_parameter_index, - sqlite3_bind_parameter_name, - sqlite3_bind_text, - sqlite3_bind_text16, - sqlite3_bind_value, - sqlite3_busy_handler, - sqlite3_busy_timeout, - sqlite3_changes, - sqlite3_close, - sqlite3_collation_needed, - sqlite3_collation_needed16, - sqlite3_column_blob, - sqlite3_column_bytes, - sqlite3_column_bytes16, - sqlite3_column_count, - sqlite3_column_database_name, - sqlite3_column_database_name16, - sqlite3_column_decltype, - sqlite3_column_decltype16, - sqlite3_column_double, - sqlite3_column_int, - sqlite3_column_int64, - sqlite3_column_name, - sqlite3_column_name16, - sqlite3_column_origin_name, - sqlite3_column_origin_name16, - sqlite3_column_table_name, - sqlite3_column_table_name16, - sqlite3_column_text, - sqlite3_column_text16, - sqlite3_column_type, - sqlite3_column_value, - sqlite3_commit_hook, - sqlite3_complete, - sqlite3_complete16, - sqlite3_create_collation, - sqlite3_create_collation16, - sqlite3_create_function, - sqlite3_create_function16, - sqlite3_create_module, - sqlite3_data_count, - sqlite3_db_handle, - sqlite3_declare_vtab, - sqlite3_enable_shared_cache, - sqlite3_errcode, - sqlite3_errmsg, - sqlite3_errmsg16, - sqlite3_exec, -#ifndef SQLITE_OMIT_DEPRECATED - sqlite3_expired, -#else - 0, -#endif - sqlite3_finalize, - sqlite3_free, - sqlite3_free_table, - sqlite3_get_autocommit, - sqlite3_get_auxdata, - sqlite3_get_table, - 0, /* Was sqlite3_global_recover(), but that function is deprecated */ - sqlite3_interrupt, - sqlite3_last_insert_rowid, - sqlite3_libversion, - sqlite3_libversion_number, - sqlite3_malloc, - sqlite3_mprintf, - sqlite3_open, - sqlite3_open16, - sqlite3_prepare, - sqlite3_prepare16, - sqlite3_profile, - sqlite3_progress_handler, - sqlite3_realloc, - sqlite3_reset, - sqlite3_result_blob, - sqlite3_result_double, - sqlite3_result_error, - sqlite3_result_error16, - sqlite3_result_int, - sqlite3_result_int64, - sqlite3_result_null, - sqlite3_result_text, - sqlite3_result_text16, - sqlite3_result_text16be, - sqlite3_result_text16le, - sqlite3_result_value, - sqlite3_rollback_hook, - sqlite3_set_authorizer, - sqlite3_set_auxdata, - sqlite3_snprintf, - sqlite3_step, - sqlite3_table_column_metadata, -#ifndef SQLITE_OMIT_DEPRECATED - sqlite3_thread_cleanup, -#else - 0, -#endif - sqlite3_total_changes, - sqlite3_trace, -#ifndef SQLITE_OMIT_DEPRECATED - sqlite3_transfer_bindings, -#else - 0, -#endif - sqlite3_update_hook, - sqlite3_user_data, - sqlite3_value_blob, - sqlite3_value_bytes, - sqlite3_value_bytes16, - sqlite3_value_double, - sqlite3_value_int, - sqlite3_value_int64, - sqlite3_value_numeric_type, - sqlite3_value_text, - sqlite3_value_text16, - sqlite3_value_text16be, - sqlite3_value_text16le, - sqlite3_value_type, - sqlite3_vmprintf, - /* - ** The original API set ends here. All extensions can call any - ** of the APIs above provided that the pointer is not NULL. But - ** before calling APIs that follow, extension should check the - ** sqlite3_libversion_number() to make sure they are dealing with - ** a library that is new enough to support that API. - ************************************************************************* - */ - sqlite3_overload_function, - - /* - ** Added after 3.3.13 - */ - sqlite3_prepare_v2, - sqlite3_prepare16_v2, - sqlite3_clear_bindings, - - /* - ** Added for 3.4.1 - */ - sqlite3_create_module_v2, - - /* - ** Added for 3.5.0 - */ - sqlite3_bind_zeroblob, - sqlite3_blob_bytes, - sqlite3_blob_close, - sqlite3_blob_open, - sqlite3_blob_read, - sqlite3_blob_write, - sqlite3_create_collation_v2, - sqlite3_file_control, - sqlite3_memory_highwater, - sqlite3_memory_used, -#ifdef SQLITE_MUTEX_OMIT - 0, - 0, - 0, - 0, - 0, -#else - sqlite3_mutex_alloc, - sqlite3_mutex_enter, - sqlite3_mutex_free, - sqlite3_mutex_leave, - sqlite3_mutex_try, -#endif - sqlite3_open_v2, - sqlite3_release_memory, - sqlite3_result_error_nomem, - sqlite3_result_error_toobig, - sqlite3_sleep, - sqlite3_soft_heap_limit, - sqlite3_vfs_find, - sqlite3_vfs_register, - sqlite3_vfs_unregister, - - /* - ** Added for 3.5.8 - */ - sqlite3_threadsafe, - sqlite3_result_zeroblob, - sqlite3_result_error_code, - sqlite3_test_control, - sqlite3_randomness, - sqlite3_context_db_handle, - - /* - ** Added for 3.6.0 - */ - sqlite3_extended_result_codes, - sqlite3_limit, - sqlite3_next_stmt, - sqlite3_sql, - sqlite3_status, - - /* - ** Added for 3.7.4 - */ - sqlite3_backup_finish, - sqlite3_backup_init, - sqlite3_backup_pagecount, - sqlite3_backup_remaining, - sqlite3_backup_step, -#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS - sqlite3_compileoption_get, - sqlite3_compileoption_used, -#else - 0, - 0, -#endif - sqlite3_create_function_v2, - sqlite3_db_config, - sqlite3_db_mutex, - sqlite3_db_status, - sqlite3_extended_errcode, - sqlite3_log, - sqlite3_soft_heap_limit64, - sqlite3_sourceid, - sqlite3_stmt_status, - sqlite3_strnicmp, -#ifdef SQLITE_ENABLE_UNLOCK_NOTIFY - sqlite3_unlock_notify, -#else - 0, -#endif -#ifndef SQLITE_OMIT_WAL - sqlite3_wal_autocheckpoint, - sqlite3_wal_checkpoint, - sqlite3_wal_hook, -#else - 0, - 0, - 0, -#endif - sqlite3_blob_reopen, - sqlite3_vtab_config, - sqlite3_vtab_on_conflict, -}; - -/* -** Attempt to load an SQLite extension library contained in the file -** zFile. The entry point is zProc. zProc may be 0 in which case a -** default entry point name (sqlite3_extension_init) is used. Use -** of the default name is recommended. -** -** Return SQLITE_OK on success and SQLITE_ERROR if something goes wrong. -** -** If an error occurs and pzErrMsg is not 0, then fill *pzErrMsg with -** error message text. The calling function should free this memory -** by calling sqlite3DbFree(db, ). -*/ -static int sqlite3LoadExtension( - sqlite3 *db, /* Load the extension into this database connection */ - const char *zFile, /* Name of the shared library containing extension */ - const char *zProc, /* Entry point. Use "sqlite3_extension_init" if 0 */ - char **pzErrMsg /* Put error message here if not 0 */ -){ - sqlite3_vfs *pVfs = db->pVfs; - void *handle; - int (*xInit)(sqlite3*,char**,const sqlite3_api_routines*); - char *zErrmsg = 0; - void **aHandle; - int nMsg = 300 + sqlite3Strlen30(zFile); - - if( pzErrMsg ) *pzErrMsg = 0; - - /* Ticket #1863. To avoid a creating security problems for older - ** applications that relink against newer versions of SQLite, the - ** ability to run load_extension is turned off by default. One - ** must call sqlite3_enable_load_extension() to turn on extension - ** loading. Otherwise you get the following error. - */ - if( (db->flags & SQLITE_LoadExtension)==0 ){ - if( pzErrMsg ){ - *pzErrMsg = sqlite3_mprintf("not authorized"); - } - return SQLITE_ERROR; - } - - if( zProc==0 ){ - zProc = "sqlite3_extension_init"; - } - - handle = sqlite3OsDlOpen(pVfs, zFile); - if( handle==0 ){ - if( pzErrMsg ){ - *pzErrMsg = zErrmsg = sqlite3_malloc(nMsg); - if( zErrmsg ){ - sqlite3_snprintf(nMsg, zErrmsg, - "unable to open shared library [%s]", zFile); - sqlite3OsDlError(pVfs, nMsg-1, zErrmsg); - } - } - return SQLITE_ERROR; - } - xInit = (int(*)(sqlite3*,char**,const sqlite3_api_routines*)) - sqlite3OsDlSym(pVfs, handle, zProc); - if( xInit==0 ){ - if( pzErrMsg ){ - nMsg += sqlite3Strlen30(zProc); - *pzErrMsg = zErrmsg = sqlite3_malloc(nMsg); - if( zErrmsg ){ - sqlite3_snprintf(nMsg, zErrmsg, - "no entry point [%s] in shared library [%s]", zProc,zFile); - sqlite3OsDlError(pVfs, nMsg-1, zErrmsg); - } - sqlite3OsDlClose(pVfs, handle); - } - return SQLITE_ERROR; - }else if( xInit(db, &zErrmsg, &sqlite3Apis) ){ - if( pzErrMsg ){ - *pzErrMsg = sqlite3_mprintf("error during initialization: %s", zErrmsg); - } - sqlite3_free(zErrmsg); - sqlite3OsDlClose(pVfs, handle); - return SQLITE_ERROR; - } - - /* Append the new shared library handle to the db->aExtension array. */ - aHandle = sqlite3DbMallocZero(db, sizeof(handle)*(db->nExtension+1)); - if( aHandle==0 ){ - return SQLITE_NOMEM; - } - if( db->nExtension>0 ){ - memcpy(aHandle, db->aExtension, sizeof(handle)*db->nExtension); - } - sqlite3DbFree(db, db->aExtension); - db->aExtension = aHandle; - - db->aExtension[db->nExtension++] = handle; - return SQLITE_OK; -} -int sqlite3_load_extension( - sqlite3 *db, /* Load the extension into this database connection */ - const char *zFile, /* Name of the shared library containing extension */ - const char *zProc, /* Entry point. Use "sqlite3_extension_init" if 0 */ - char **pzErrMsg /* Put error message here if not 0 */ -){ - int rc; - sqlite3_mutex_enter(db->mutex); - rc = sqlite3LoadExtension(db, zFile, zProc, pzErrMsg); - rc = sqlite3ApiExit(db, rc); - sqlite3_mutex_leave(db->mutex); - return rc; -} - -/* -** Call this routine when the database connection is closing in order -** to clean up loaded extensions -*/ -void sqlite3CloseExtensions(sqlite3 *db){ - int i; - assert( sqlite3_mutex_held(db->mutex) ); - for(i=0; inExtension; i++){ - sqlite3OsDlClose(db->pVfs, db->aExtension[i]); - } - sqlite3DbFree(db, db->aExtension); -} - -/* -** Enable or disable extension loading. Extension loading is disabled by -** default so as not to open security holes in older applications. -*/ -int sqlite3_enable_load_extension(sqlite3 *db, int onoff){ - sqlite3_mutex_enter(db->mutex); - if( onoff ){ - db->flags |= SQLITE_LoadExtension; - }else{ - db->flags &= ~SQLITE_LoadExtension; - } - sqlite3_mutex_leave(db->mutex); - return SQLITE_OK; -} - -#endif /* SQLITE_OMIT_LOAD_EXTENSION */ - -/* -** The auto-extension code added regardless of whether or not extension -** loading is supported. We need a dummy sqlite3Apis pointer for that -** code if regular extension loading is not available. This is that -** dummy pointer. -*/ -#ifdef SQLITE_OMIT_LOAD_EXTENSION -static const sqlite3_api_routines sqlite3Apis = { 0 }; -#endif - - -/* -** The following object holds the list of automatically loaded -** extensions. -** -** This list is shared across threads. The SQLITE_MUTEX_STATIC_MASTER -** mutex must be held while accessing this list. -*/ -typedef struct sqlite3AutoExtList sqlite3AutoExtList; -static SQLITE_WSD struct sqlite3AutoExtList { - int nExt; /* Number of entries in aExt[] */ - void (**aExt)(void); /* Pointers to the extension init functions */ -} sqlite3Autoext = { 0, 0 }; - -/* The "wsdAutoext" macro will resolve to the autoextension -** state vector. If writable static data is unsupported on the target, -** we have to locate the state vector at run-time. In the more common -** case where writable static data is supported, wsdStat can refer directly -** to the "sqlite3Autoext" state vector declared above. -*/ -#ifdef SQLITE_OMIT_WSD -# define wsdAutoextInit \ - sqlite3AutoExtList *x = &GLOBAL(sqlite3AutoExtList,sqlite3Autoext) -# define wsdAutoext x[0] -#else -# define wsdAutoextInit -# define wsdAutoext sqlite3Autoext -#endif - - -/* -** Register a statically linked extension that is automatically -** loaded by every new database connection. -*/ -int sqlite3_auto_extension(void (*xInit)(void)){ - int rc = SQLITE_OK; -#ifndef SQLITE_OMIT_AUTOINIT - rc = sqlite3_initialize(); - if( rc ){ - return rc; - }else -#endif - { - int i; -#if SQLITE_THREADSAFE - sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); -#endif - wsdAutoextInit; - sqlite3_mutex_enter(mutex); - for(i=0; i=wsdAutoext.nExt ){ - xInit = 0; - go = 0; - }else{ - xInit = (int(*)(sqlite3*,char**,const sqlite3_api_routines*)) - wsdAutoext.aExt[i]; - } - sqlite3_mutex_leave(mutex); - zErrmsg = 0; - if( xInit && xInit(db, &zErrmsg, &sqlite3Apis) ){ - sqlite3Error(db, SQLITE_ERROR, - "automatic extension loading failed: %s", zErrmsg); - go = 0; - } - sqlite3_free(zErrmsg); - } -} diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/main.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/main.c deleted file mode 100644 index 6df72051a6..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/main.c +++ /dev/null @@ -1,2954 +0,0 @@ -/* -** 2001 September 15 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** Main file for the SQLite library. The routines in this file -** implement the programmer interface to the library. Routines in -** other files are for internal use by SQLite and should not be -** accessed by users of the library. -*/ -#include "sqliteInt.h" - -#ifdef SQLITE_ENABLE_FTS3 -# include "fts3.h" -#endif -#ifdef SQLITE_ENABLE_RTREE -# include "rtree.h" -#endif -#ifdef SQLITE_ENABLE_ICU -# include "sqliteicu.h" -#endif - -#ifndef SQLITE_AMALGAMATION -/* IMPLEMENTATION-OF: R-46656-45156 The sqlite3_version[] string constant -** contains the text of SQLITE_VERSION macro. -*/ -const char sqlite3_version[] = SQLITE_VERSION; -#endif - -/* IMPLEMENTATION-OF: R-53536-42575 The sqlite3_libversion() function returns -** a pointer to the to the sqlite3_version[] string constant. -*/ -const char *sqlite3_libversion(void){ return sqlite3_version; } - -/* IMPLEMENTATION-OF: R-63124-39300 The sqlite3_sourceid() function returns a -** pointer to a string constant whose value is the same as the -** SQLITE_SOURCE_ID C preprocessor macro. -*/ -const char *sqlite3_sourceid(void){ return SQLITE_SOURCE_ID; } - -/* IMPLEMENTATION-OF: R-35210-63508 The sqlite3_libversion_number() function -** returns an integer equal to SQLITE_VERSION_NUMBER. -*/ -int sqlite3_libversion_number(void){ return SQLITE_VERSION_NUMBER; } - -/* IMPLEMENTATION-OF: R-54823-41343 The sqlite3_threadsafe() function returns -** zero if and only if SQLite was compiled mutexing code omitted due to -** the SQLITE_THREADSAFE compile-time option being set to 0. -*/ -int sqlite3_threadsafe(void){ return SQLITE_THREADSAFE; } - -#if !defined(SQLITE_OMIT_TRACE) && defined(SQLITE_ENABLE_IOTRACE) -/* -** If the following function pointer is not NULL and if -** SQLITE_ENABLE_IOTRACE is enabled, then messages describing -** I/O active are written using this function. These messages -** are intended for debugging activity only. -*/ -void (*sqlite3IoTrace)(const char*, ...) = 0; -#endif - -/* -** If the following global variable points to a string which is the -** name of a directory, then that directory will be used to store -** temporary files. -** -** See also the "PRAGMA temp_store_directory" SQL command. -*/ -char *sqlite3_temp_directory = 0; - -/* -** Initialize SQLite. -** -** This routine must be called to initialize the memory allocation, -** VFS, and mutex subsystems prior to doing any serious work with -** SQLite. But as long as you do not compile with SQLITE_OMIT_AUTOINIT -** this routine will be called automatically by key routines such as -** sqlite3_open(). -** -** This routine is a no-op except on its very first call for the process, -** or for the first call after a call to sqlite3_shutdown. -** -** The first thread to call this routine runs the initialization to -** completion. If subsequent threads call this routine before the first -** thread has finished the initialization process, then the subsequent -** threads must block until the first thread finishes with the initialization. -** -** The first thread might call this routine recursively. Recursive -** calls to this routine should not block, of course. Otherwise the -** initialization process would never complete. -** -** Let X be the first thread to enter this routine. Let Y be some other -** thread. Then while the initial invocation of this routine by X is -** incomplete, it is required that: -** -** * Calls to this routine from Y must block until the outer-most -** call by X completes. -** -** * Recursive calls to this routine from thread X return immediately -** without blocking. -*/ -int sqlite3_initialize(void){ - MUTEX_LOGIC( sqlite3_mutex *pMaster; ) /* The main static mutex */ - int rc; /* Result code */ - -#ifdef SQLITE_OMIT_WSD - rc = sqlite3_wsd_init(4096, 24); - if( rc!=SQLITE_OK ){ - return rc; - } -#endif - - /* If SQLite is already completely initialized, then this call - ** to sqlite3_initialize() should be a no-op. But the initialization - ** must be complete. So isInit must not be set until the very end - ** of this routine. - */ - if( sqlite3GlobalConfig.isInit ) return SQLITE_OK; - - /* Make sure the mutex subsystem is initialized. If unable to - ** initialize the mutex subsystem, return early with the error. - ** If the system is so sick that we are unable to allocate a mutex, - ** there is not much SQLite is going to be able to do. - ** - ** The mutex subsystem must take care of serializing its own - ** initialization. - */ - rc = sqlite3MutexInit(); - if( rc ) return rc; - - /* Initialize the malloc() system and the recursive pInitMutex mutex. - ** This operation is protected by the STATIC_MASTER mutex. Note that - ** MutexAlloc() is called for a static mutex prior to initializing the - ** malloc subsystem - this implies that the allocation of a static - ** mutex must not require support from the malloc subsystem. - */ - MUTEX_LOGIC( pMaster = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); ) - sqlite3_mutex_enter(pMaster); - sqlite3GlobalConfig.isMutexInit = 1; - if( !sqlite3GlobalConfig.isMallocInit ){ - rc = sqlite3MallocInit(); - } - if( rc==SQLITE_OK ){ - sqlite3GlobalConfig.isMallocInit = 1; - if( !sqlite3GlobalConfig.pInitMutex ){ - sqlite3GlobalConfig.pInitMutex = - sqlite3MutexAlloc(SQLITE_MUTEX_RECURSIVE); - if( sqlite3GlobalConfig.bCoreMutex && !sqlite3GlobalConfig.pInitMutex ){ - rc = SQLITE_NOMEM; - } - } - } - if( rc==SQLITE_OK ){ - sqlite3GlobalConfig.nRefInitMutex++; - } - sqlite3_mutex_leave(pMaster); - - /* If rc is not SQLITE_OK at this point, then either the malloc - ** subsystem could not be initialized or the system failed to allocate - ** the pInitMutex mutex. Return an error in either case. */ - if( rc!=SQLITE_OK ){ - return rc; - } - - /* Do the rest of the initialization under the recursive mutex so - ** that we will be able to handle recursive calls into - ** sqlite3_initialize(). The recursive calls normally come through - ** sqlite3_os_init() when it invokes sqlite3_vfs_register(), but other - ** recursive calls might also be possible. - ** - ** IMPLEMENTATION-OF: R-00140-37445 SQLite automatically serializes calls - ** to the xInit method, so the xInit method need not be threadsafe. - ** - ** The following mutex is what serializes access to the appdef pcache xInit - ** methods. The sqlite3_pcache_methods.xInit() all is embedded in the - ** call to sqlite3PcacheInitialize(). - */ - sqlite3_mutex_enter(sqlite3GlobalConfig.pInitMutex); - if( sqlite3GlobalConfig.isInit==0 && sqlite3GlobalConfig.inProgress==0 ){ - FuncDefHash *pHash = &GLOBAL(FuncDefHash, sqlite3GlobalFunctions); - sqlite3GlobalConfig.inProgress = 1; - memset(pHash, 0, sizeof(sqlite3GlobalFunctions)); - sqlite3RegisterGlobalFunctions(); - if( sqlite3GlobalConfig.isPCacheInit==0 ){ - rc = sqlite3PcacheInitialize(); - } - if( rc==SQLITE_OK ){ - sqlite3GlobalConfig.isPCacheInit = 1; - rc = sqlite3OsInit(); - } - if( rc==SQLITE_OK ){ - sqlite3PCacheBufferSetup( sqlite3GlobalConfig.pPage, - sqlite3GlobalConfig.szPage, sqlite3GlobalConfig.nPage); - sqlite3GlobalConfig.isInit = 1; - } - sqlite3GlobalConfig.inProgress = 0; - } - sqlite3_mutex_leave(sqlite3GlobalConfig.pInitMutex); - - /* Go back under the static mutex and clean up the recursive - ** mutex to prevent a resource leak. - */ - sqlite3_mutex_enter(pMaster); - sqlite3GlobalConfig.nRefInitMutex--; - if( sqlite3GlobalConfig.nRefInitMutex<=0 ){ - assert( sqlite3GlobalConfig.nRefInitMutex==0 ); - sqlite3_mutex_free(sqlite3GlobalConfig.pInitMutex); - sqlite3GlobalConfig.pInitMutex = 0; - } - sqlite3_mutex_leave(pMaster); - - /* The following is just a sanity check to make sure SQLite has - ** been compiled correctly. It is important to run this code, but - ** we don't want to run it too often and soak up CPU cycles for no - ** reason. So we run it once during initialization. - */ -#ifndef NDEBUG -#ifndef SQLITE_OMIT_FLOATING_POINT - /* This section of code's only "output" is via assert() statements. */ - if ( rc==SQLITE_OK ){ - u64 x = (((u64)1)<<63)-1; - double y; - assert(sizeof(x)==8); - assert(sizeof(x)==sizeof(y)); - memcpy(&y, &x, 8); - assert( sqlite3IsNaN(y) ); - } -#endif -#endif - - /* Do extra initialization steps requested by the SQLITE_EXTRA_INIT - ** compile-time option. - */ -#ifdef SQLITE_EXTRA_INIT - if( rc==SQLITE_OK && sqlite3GlobalConfig.isInit ){ - int SQLITE_EXTRA_INIT(void); - rc = SQLITE_EXTRA_INIT(); - } -#endif - - return rc; -} - -/* -** Undo the effects of sqlite3_initialize(). Must not be called while -** there are outstanding database connections or memory allocations or -** while any part of SQLite is otherwise in use in any thread. This -** routine is not threadsafe. But it is safe to invoke this routine -** on when SQLite is already shut down. If SQLite is already shut down -** when this routine is invoked, then this routine is a harmless no-op. -*/ -int sqlite3_shutdown(void){ - if( sqlite3GlobalConfig.isInit ){ - sqlite3_os_end(); - sqlite3_reset_auto_extension(); - sqlite3GlobalConfig.isInit = 0; - } - if( sqlite3GlobalConfig.isPCacheInit ){ - sqlite3PcacheShutdown(); - sqlite3GlobalConfig.isPCacheInit = 0; - } - if( sqlite3GlobalConfig.isMallocInit ){ - sqlite3MallocEnd(); - sqlite3GlobalConfig.isMallocInit = 0; - } - if( sqlite3GlobalConfig.isMutexInit ){ - sqlite3MutexEnd(); - sqlite3GlobalConfig.isMutexInit = 0; - } - - return SQLITE_OK; -} - -/* -** This API allows applications to modify the global configuration of -** the SQLite library at run-time. -** -** This routine should only be called when there are no outstanding -** database connections or memory allocations. This routine is not -** threadsafe. Failure to heed these warnings can lead to unpredictable -** behavior. -*/ -int sqlite3_config(int op, ...){ - va_list ap; - int rc = SQLITE_OK; - - /* sqlite3_config() shall return SQLITE_MISUSE if it is invoked while - ** the SQLite library is in use. */ - if( sqlite3GlobalConfig.isInit ) return SQLITE_MISUSE_BKPT; - - va_start(ap, op); - switch( op ){ - - /* Mutex configuration options are only available in a threadsafe - ** compile. - */ -#if defined(SQLITE_THREADSAFE) && SQLITE_THREADSAFE>0 - case SQLITE_CONFIG_SINGLETHREAD: { - /* Disable all mutexing */ - sqlite3GlobalConfig.bCoreMutex = 0; - sqlite3GlobalConfig.bFullMutex = 0; - break; - } - case SQLITE_CONFIG_MULTITHREAD: { - /* Disable mutexing of database connections */ - /* Enable mutexing of core data structures */ - sqlite3GlobalConfig.bCoreMutex = 1; - sqlite3GlobalConfig.bFullMutex = 0; - break; - } - case SQLITE_CONFIG_SERIALIZED: { - /* Enable all mutexing */ - sqlite3GlobalConfig.bCoreMutex = 1; - sqlite3GlobalConfig.bFullMutex = 1; - break; - } - case SQLITE_CONFIG_MUTEX: { - /* Specify an alternative mutex implementation */ - sqlite3GlobalConfig.mutex = *va_arg(ap, sqlite3_mutex_methods*); - break; - } - case SQLITE_CONFIG_GETMUTEX: { - /* Retrieve the current mutex implementation */ - *va_arg(ap, sqlite3_mutex_methods*) = sqlite3GlobalConfig.mutex; - break; - } -#endif - - - case SQLITE_CONFIG_MALLOC: { - /* Specify an alternative malloc implementation */ - sqlite3GlobalConfig.m = *va_arg(ap, sqlite3_mem_methods*); - break; - } - case SQLITE_CONFIG_GETMALLOC: { - /* Retrieve the current malloc() implementation */ - if( sqlite3GlobalConfig.m.xMalloc==0 ) sqlite3MemSetDefault(); - *va_arg(ap, sqlite3_mem_methods*) = sqlite3GlobalConfig.m; - break; - } - case SQLITE_CONFIG_MEMSTATUS: { - /* Enable or disable the malloc status collection */ - sqlite3GlobalConfig.bMemstat = va_arg(ap, int); - break; - } - case SQLITE_CONFIG_SCRATCH: { - /* Designate a buffer for scratch memory space */ - sqlite3GlobalConfig.pScratch = va_arg(ap, void*); - sqlite3GlobalConfig.szScratch = va_arg(ap, int); - sqlite3GlobalConfig.nScratch = va_arg(ap, int); - break; - } - case SQLITE_CONFIG_PAGECACHE: { - /* Designate a buffer for page cache memory space */ - sqlite3GlobalConfig.pPage = va_arg(ap, void*); - sqlite3GlobalConfig.szPage = va_arg(ap, int); - sqlite3GlobalConfig.nPage = va_arg(ap, int); - break; - } - - case SQLITE_CONFIG_PCACHE: { - /* Specify an alternative page cache implementation */ - sqlite3GlobalConfig.pcache = *va_arg(ap, sqlite3_pcache_methods*); - break; - } - - case SQLITE_CONFIG_GETPCACHE: { - if( sqlite3GlobalConfig.pcache.xInit==0 ){ - sqlite3PCacheSetDefault(); - } - *va_arg(ap, sqlite3_pcache_methods*) = sqlite3GlobalConfig.pcache; - break; - } - -#if defined(SQLITE_ENABLE_MEMSYS3) || defined(SQLITE_ENABLE_MEMSYS5) - case SQLITE_CONFIG_HEAP: { - /* Designate a buffer for heap memory space */ - sqlite3GlobalConfig.pHeap = va_arg(ap, void*); - sqlite3GlobalConfig.nHeap = va_arg(ap, int); - sqlite3GlobalConfig.mnReq = va_arg(ap, int); - - if( sqlite3GlobalConfig.mnReq<1 ){ - sqlite3GlobalConfig.mnReq = 1; - }else if( sqlite3GlobalConfig.mnReq>(1<<12) ){ - /* cap min request size at 2^12 */ - sqlite3GlobalConfig.mnReq = (1<<12); - } - - if( sqlite3GlobalConfig.pHeap==0 ){ - /* If the heap pointer is NULL, then restore the malloc implementation - ** back to NULL pointers too. This will cause the malloc to go - ** back to its default implementation when sqlite3_initialize() is - ** run. - */ - memset(&sqlite3GlobalConfig.m, 0, sizeof(sqlite3GlobalConfig.m)); - }else{ - /* The heap pointer is not NULL, then install one of the - ** mem5.c/mem3.c methods. If neither ENABLE_MEMSYS3 nor - ** ENABLE_MEMSYS5 is defined, return an error. - */ -#ifdef SQLITE_ENABLE_MEMSYS3 - sqlite3GlobalConfig.m = *sqlite3MemGetMemsys3(); -#endif -#ifdef SQLITE_ENABLE_MEMSYS5 - sqlite3GlobalConfig.m = *sqlite3MemGetMemsys5(); -#endif - } - break; - } -#endif - - case SQLITE_CONFIG_LOOKASIDE: { - sqlite3GlobalConfig.szLookaside = va_arg(ap, int); - sqlite3GlobalConfig.nLookaside = va_arg(ap, int); - break; - } - - /* Record a pointer to the logger funcction and its first argument. - ** The default is NULL. Logging is disabled if the function pointer is - ** NULL. - */ - case SQLITE_CONFIG_LOG: { - /* MSVC is picky about pulling func ptrs from va lists. - ** http://support.microsoft.com/kb/47961 - ** sqlite3GlobalConfig.xLog = va_arg(ap, void(*)(void*,int,const char*)); - */ - typedef void(*LOGFUNC_t)(void*,int,const char*); - sqlite3GlobalConfig.xLog = va_arg(ap, LOGFUNC_t); - sqlite3GlobalConfig.pLogArg = va_arg(ap, void*); - break; - } - - case SQLITE_CONFIG_URI: { - sqlite3GlobalConfig.bOpenUri = va_arg(ap, int); - break; - } - - default: { - rc = SQLITE_ERROR; - break; - } - } - va_end(ap); - return rc; -} - -/* -** Set up the lookaside buffers for a database connection. -** Return SQLITE_OK on success. -** If lookaside is already active, return SQLITE_BUSY. -** -** The sz parameter is the number of bytes in each lookaside slot. -** The cnt parameter is the number of slots. If pStart is NULL the -** space for the lookaside memory is obtained from sqlite3_malloc(). -** If pStart is not NULL then it is sz*cnt bytes of memory to use for -** the lookaside memory. -*/ -static int setupLookaside(sqlite3 *db, void *pBuf, int sz, int cnt){ - void *pStart; - if( db->lookaside.nOut ){ - return SQLITE_BUSY; - } - /* Free any existing lookaside buffer for this handle before - ** allocating a new one so we don't have to have space for - ** both at the same time. - */ - if( db->lookaside.bMalloced ){ - sqlite3_free(db->lookaside.pStart); - } - /* The size of a lookaside slot needs to be larger than a pointer - ** to be useful. - */ - if( sz<=(int)sizeof(LookasideSlot*) ) sz = 0; - if( cnt<0 ) cnt = 0; - if( sz==0 || cnt==0 ){ - sz = 0; - pStart = 0; - }else if( pBuf==0 ){ - sz = ROUNDDOWN8(sz); /* IMP: R-33038-09382 */ - sqlite3BeginBenignMalloc(); - pStart = sqlite3Malloc( sz*cnt ); /* IMP: R-61949-35727 */ - sqlite3EndBenignMalloc(); - }else{ - sz = ROUNDDOWN8(sz); /* IMP: R-33038-09382 */ - pStart = pBuf; - } - db->lookaside.pStart = pStart; - db->lookaside.pFree = 0; - db->lookaside.sz = (u16)sz; - if( pStart ){ - int i; - LookasideSlot *p; - assert( sz > (int)sizeof(LookasideSlot*) ); - p = (LookasideSlot*)pStart; - for(i=cnt-1; i>=0; i--){ - p->pNext = db->lookaside.pFree; - db->lookaside.pFree = p; - p = (LookasideSlot*)&((u8*)p)[sz]; - } - db->lookaside.pEnd = p; - db->lookaside.bEnabled = 1; - db->lookaside.bMalloced = pBuf==0 ?1:0; - }else{ - db->lookaside.pEnd = 0; - db->lookaside.bEnabled = 0; - db->lookaside.bMalloced = 0; - } - return SQLITE_OK; -} - -/* -** Return the mutex associated with a database connection. -*/ -sqlite3_mutex *sqlite3_db_mutex(sqlite3 *db){ - return db->mutex; -} - -/* -** Configuration settings for an individual database connection -*/ -int sqlite3_db_config(sqlite3 *db, int op, ...){ - va_list ap; - int rc; - va_start(ap, op); - switch( op ){ - case SQLITE_DBCONFIG_LOOKASIDE: { - void *pBuf = va_arg(ap, void*); /* IMP: R-26835-10964 */ - int sz = va_arg(ap, int); /* IMP: R-47871-25994 */ - int cnt = va_arg(ap, int); /* IMP: R-04460-53386 */ - rc = setupLookaside(db, pBuf, sz, cnt); - break; - } - default: { - static const struct { - int op; /* The opcode */ - u32 mask; /* Mask of the bit in sqlite3.flags to set/clear */ - } aFlagOp[] = { - { SQLITE_DBCONFIG_ENABLE_FKEY, SQLITE_ForeignKeys }, - { SQLITE_DBCONFIG_ENABLE_TRIGGER, SQLITE_EnableTrigger }, - }; - unsigned int i; - rc = SQLITE_ERROR; /* IMP: R-42790-23372 */ - for(i=0; iflags; - if( onoff>0 ){ - db->flags |= aFlagOp[i].mask; - }else if( onoff==0 ){ - db->flags &= ~aFlagOp[i].mask; - } - if( oldFlags!=db->flags ){ - sqlite3ExpirePreparedStatements(db); - } - if( pRes ){ - *pRes = (db->flags & aFlagOp[i].mask)!=0; - } - rc = SQLITE_OK; - break; - } - } - break; - } - } - va_end(ap); - return rc; -} - - -/* -** Return true if the buffer z[0..n-1] contains all spaces. -*/ -static int allSpaces(const char *z, int n){ - while( n>0 && z[n-1]==' ' ){ n--; } - return n==0; -} - -/* -** This is the default collating function named "BINARY" which is always -** available. -** -** If the padFlag argument is not NULL then space padding at the end -** of strings is ignored. This implements the RTRIM collation. -*/ -static int binCollFunc( - void *padFlag, - int nKey1, const void *pKey1, - int nKey2, const void *pKey2 -){ - int rc, n; - n = nKey1lastRowid; -} - -/* -** Return the number of changes in the most recent call to sqlite3_exec(). -*/ -int sqlite3_changes(sqlite3 *db){ - return db->nChange; -} - -/* -** Return the number of changes since the database handle was opened. -*/ -int sqlite3_total_changes(sqlite3 *db){ - return db->nTotalChange; -} - -/* -** Close all open savepoints. This function only manipulates fields of the -** database handle object, it does not close any savepoints that may be open -** at the b-tree/pager level. -*/ -void sqlite3CloseSavepoints(sqlite3 *db){ - while( db->pSavepoint ){ - Savepoint *pTmp = db->pSavepoint; - db->pSavepoint = pTmp->pNext; - sqlite3DbFree(db, pTmp); - } - db->nSavepoint = 0; - db->nStatement = 0; - db->isTransactionSavepoint = 0; -} - -/* -** Invoke the destructor function associated with FuncDef p, if any. Except, -** if this is not the last copy of the function, do not invoke it. Multiple -** copies of a single function are created when create_function() is called -** with SQLITE_ANY as the encoding. -*/ -static void functionDestroy(sqlite3 *db, FuncDef *p){ - FuncDestructor *pDestructor = p->pDestructor; - if( pDestructor ){ - pDestructor->nRef--; - if( pDestructor->nRef==0 ){ - pDestructor->xDestroy(pDestructor->pUserData); - sqlite3DbFree(db, pDestructor); - } - } -} - -/* -** Close an existing SQLite database -*/ -int sqlite3_close(sqlite3 *db){ - HashElem *i; /* Hash table iterator */ - int j; - - if( !db ){ - return SQLITE_OK; - } - if( !sqlite3SafetyCheckSickOrOk(db) ){ - return SQLITE_MISUSE_BKPT; - } - sqlite3_mutex_enter(db->mutex); - - /* Force xDestroy calls on all virtual tables */ - sqlite3ResetInternalSchema(db, -1); - - /* If a transaction is open, the ResetInternalSchema() call above - ** will not have called the xDisconnect() method on any virtual - ** tables in the db->aVTrans[] array. The following sqlite3VtabRollback() - ** call will do so. We need to do this before the check for active - ** SQL statements below, as the v-table implementation may be storing - ** some prepared statements internally. - */ - sqlite3VtabRollback(db); - - /* If there are any outstanding VMs, return SQLITE_BUSY. */ - if( db->pVdbe ){ - sqlite3Error(db, SQLITE_BUSY, - "unable to close due to unfinalised statements"); - sqlite3_mutex_leave(db->mutex); - return SQLITE_BUSY; - } - assert( sqlite3SafetyCheckSickOrOk(db) ); - - for(j=0; jnDb; j++){ - Btree *pBt = db->aDb[j].pBt; - if( pBt && sqlite3BtreeIsInBackup(pBt) ){ - sqlite3Error(db, SQLITE_BUSY, - "unable to close due to unfinished backup operation"); - sqlite3_mutex_leave(db->mutex); - return SQLITE_BUSY; - } - } - - /* Free any outstanding Savepoint structures. */ - sqlite3CloseSavepoints(db); - - for(j=0; jnDb; j++){ - struct Db *pDb = &db->aDb[j]; - if( pDb->pBt ){ - sqlite3BtreeClose(pDb->pBt); - pDb->pBt = 0; - if( j!=1 ){ - pDb->pSchema = 0; - } - } - } - sqlite3ResetInternalSchema(db, -1); - - /* Tell the code in notify.c that the connection no longer holds any - ** locks and does not require any further unlock-notify callbacks. - */ - sqlite3ConnectionClosed(db); - - assert( db->nDb<=2 ); - assert( db->aDb==db->aDbStatic ); - for(j=0; jaFunc.a); j++){ - FuncDef *pNext, *pHash, *p; - for(p=db->aFunc.a[j]; p; p=pHash){ - pHash = p->pHash; - while( p ){ - functionDestroy(db, p); - pNext = p->pNext; - sqlite3DbFree(db, p); - p = pNext; - } - } - } - for(i=sqliteHashFirst(&db->aCollSeq); i; i=sqliteHashNext(i)){ - CollSeq *pColl = (CollSeq *)sqliteHashData(i); - /* Invoke any destructors registered for collation sequence user data. */ - for(j=0; j<3; j++){ - if( pColl[j].xDel ){ - pColl[j].xDel(pColl[j].pUser); - } - } - sqlite3DbFree(db, pColl); - } - sqlite3HashClear(&db->aCollSeq); -#ifndef SQLITE_OMIT_VIRTUALTABLE - for(i=sqliteHashFirst(&db->aModule); i; i=sqliteHashNext(i)){ - Module *pMod = (Module *)sqliteHashData(i); - if( pMod->xDestroy ){ - pMod->xDestroy(pMod->pAux); - } - sqlite3DbFree(db, pMod); - } - sqlite3HashClear(&db->aModule); -#endif - - sqlite3Error(db, SQLITE_OK, 0); /* Deallocates any cached error strings. */ - if( db->pErr ){ - sqlite3ValueFree(db->pErr); - } - sqlite3CloseExtensions(db); - - db->magic = SQLITE_MAGIC_ERROR; - - /* The temp-database schema is allocated differently from the other schema - ** objects (using sqliteMalloc() directly, instead of sqlite3BtreeSchema()). - ** So it needs to be freed here. Todo: Why not roll the temp schema into - ** the same sqliteMalloc() as the one that allocates the database - ** structure? - */ - sqlite3DbFree(db, db->aDb[1].pSchema); - sqlite3_mutex_leave(db->mutex); - db->magic = SQLITE_MAGIC_CLOSED; - sqlite3_mutex_free(db->mutex); - assert( db->lookaside.nOut==0 ); /* Fails on a lookaside memory leak */ - if( db->lookaside.bMalloced ){ - sqlite3_free(db->lookaside.pStart); - } - sqlite3_free(db); - return SQLITE_OK; -} - -/* -** Rollback all database files. -*/ -void sqlite3RollbackAll(sqlite3 *db){ - int i; - int inTrans = 0; - assert( sqlite3_mutex_held(db->mutex) ); - sqlite3BeginBenignMalloc(); - for(i=0; inDb; i++){ - if( db->aDb[i].pBt ){ - if( sqlite3BtreeIsInTrans(db->aDb[i].pBt) ){ - inTrans = 1; - } - sqlite3BtreeRollback(db->aDb[i].pBt); - db->aDb[i].inTrans = 0; - } - } - sqlite3VtabRollback(db); - sqlite3EndBenignMalloc(); - - if( db->flags&SQLITE_InternChanges ){ - sqlite3ExpirePreparedStatements(db); - sqlite3ResetInternalSchema(db, -1); - } - - /* Any deferred constraint violations have now been resolved. */ - db->nDeferredCons = 0; - - /* If one has been configured, invoke the rollback-hook callback */ - if( db->xRollbackCallback && (inTrans || !db->autoCommit) ){ - db->xRollbackCallback(db->pRollbackArg); - } -} - -/* -** Return a static string that describes the kind of error specified in the -** argument. -*/ -const char *sqlite3ErrStr(int rc){ - static const char* const aMsg[] = { - /* SQLITE_OK */ "not an error", - /* SQLITE_ERROR */ "SQL logic error or missing database", - /* SQLITE_INTERNAL */ 0, - /* SQLITE_PERM */ "access permission denied", - /* SQLITE_ABORT */ "callback requested query abort", - /* SQLITE_BUSY */ "database is locked", - /* SQLITE_LOCKED */ "database table is locked", - /* SQLITE_NOMEM */ "out of memory", - /* SQLITE_READONLY */ "attempt to write a readonly database", - /* SQLITE_INTERRUPT */ "interrupted", - /* SQLITE_IOERR */ "disk I/O error", - /* SQLITE_CORRUPT */ "database disk image is malformed", - /* SQLITE_NOTFOUND */ "unknown operation", - /* SQLITE_FULL */ "database or disk is full", - /* SQLITE_CANTOPEN */ "unable to open database file", - /* SQLITE_PROTOCOL */ "locking protocol", - /* SQLITE_EMPTY */ "table contains no data", - /* SQLITE_SCHEMA */ "database schema has changed", - /* SQLITE_TOOBIG */ "string or blob too big", - /* SQLITE_CONSTRAINT */ "constraint failed", - /* SQLITE_MISMATCH */ "datatype mismatch", - /* SQLITE_MISUSE */ "library routine called out of sequence", - /* SQLITE_NOLFS */ "large file support is disabled", - /* SQLITE_AUTH */ "authorization denied", - /* SQLITE_FORMAT */ "auxiliary database format error", - /* SQLITE_RANGE */ "bind or column index out of range", - /* SQLITE_NOTADB */ "file is encrypted or is not a database", - }; - rc &= 0xff; - if( ALWAYS(rc>=0) && rc<(int)(sizeof(aMsg)/sizeof(aMsg[0])) && aMsg[rc]!=0 ){ - return aMsg[rc]; - }else{ - return "unknown error"; - } -} - -/* -** This routine implements a busy callback that sleeps and tries -** again until a timeout value is reached. The timeout value is -** an integer number of milliseconds passed in as the first -** argument. -*/ -static int sqliteDefaultBusyCallback( - void *ptr, /* Database connection */ - int count /* Number of times table has been busy */ -){ -#if SQLITE_OS_WIN || (defined(HAVE_USLEEP) && HAVE_USLEEP) - static const u8 delays[] = - { 1, 2, 5, 10, 15, 20, 25, 25, 25, 50, 50, 100 }; - static const u8 totals[] = - { 0, 1, 3, 8, 18, 33, 53, 78, 103, 128, 178, 228 }; -# define NDELAY ArraySize(delays) - sqlite3 *db = (sqlite3 *)ptr; - int timeout = db->busyTimeout; - int delay, prior; - - assert( count>=0 ); - if( count < NDELAY ){ - delay = delays[count]; - prior = totals[count]; - }else{ - delay = delays[NDELAY-1]; - prior = totals[NDELAY-1] + delay*(count-(NDELAY-1)); - } - if( prior + delay > timeout ){ - delay = timeout - prior; - if( delay<=0 ) return 0; - } - sqlite3OsSleep(db->pVfs, delay*1000); - return 1; -#else - sqlite3 *db = (sqlite3 *)ptr; - int timeout = ((sqlite3 *)ptr)->busyTimeout; - if( (count+1)*1000 > timeout ){ - return 0; - } - sqlite3OsSleep(db->pVfs, 1000000); - return 1; -#endif -} - -/* -** Invoke the given busy handler. -** -** This routine is called when an operation failed with a lock. -** If this routine returns non-zero, the lock is retried. If it -** returns 0, the operation aborts with an SQLITE_BUSY error. -*/ -int sqlite3InvokeBusyHandler(BusyHandler *p){ - int rc; - if( NEVER(p==0) || p->xFunc==0 || p->nBusy<0 ) return 0; - rc = p->xFunc(p->pArg, p->nBusy); - if( rc==0 ){ - p->nBusy = -1; - }else{ - p->nBusy++; - } - return rc; -} - -/* -** This routine sets the busy callback for an Sqlite database to the -** given callback function with the given argument. -*/ -int sqlite3_busy_handler( - sqlite3 *db, - int (*xBusy)(void*,int), - void *pArg -){ - sqlite3_mutex_enter(db->mutex); - db->busyHandler.xFunc = xBusy; - db->busyHandler.pArg = pArg; - db->busyHandler.nBusy = 0; - sqlite3_mutex_leave(db->mutex); - return SQLITE_OK; -} - -#ifndef SQLITE_OMIT_PROGRESS_CALLBACK -/* -** This routine sets the progress callback for an Sqlite database to the -** given callback function with the given argument. The progress callback will -** be invoked every nOps opcodes. -*/ -void sqlite3_progress_handler( - sqlite3 *db, - int nOps, - int (*xProgress)(void*), - void *pArg -){ - sqlite3_mutex_enter(db->mutex); - if( nOps>0 ){ - db->xProgress = xProgress; - db->nProgressOps = nOps; - db->pProgressArg = pArg; - }else{ - db->xProgress = 0; - db->nProgressOps = 0; - db->pProgressArg = 0; - } - sqlite3_mutex_leave(db->mutex); -} -#endif - - -/* -** This routine installs a default busy handler that waits for the -** specified number of milliseconds before returning 0. -*/ -int sqlite3_busy_timeout(sqlite3 *db, int ms){ - if( ms>0 ){ - db->busyTimeout = ms; - sqlite3_busy_handler(db, sqliteDefaultBusyCallback, (void*)db); - }else{ - sqlite3_busy_handler(db, 0, 0); - } - return SQLITE_OK; -} - -/* -** Cause any pending operation to stop at its earliest opportunity. -*/ -void sqlite3_interrupt(sqlite3 *db){ - db->u1.isInterrupted = 1; -} - - -/* -** This function is exactly the same as sqlite3_create_function(), except -** that it is designed to be called by internal code. The difference is -** that if a malloc() fails in sqlite3_create_function(), an error code -** is returned and the mallocFailed flag cleared. -*/ -int sqlite3CreateFunc( - sqlite3 *db, - const char *zFunctionName, - int nArg, - int enc, - void *pUserData, - void (*xFunc)(sqlite3_context*,int,sqlite3_value **), - void (*xStep)(sqlite3_context*,int,sqlite3_value **), - void (*xFinal)(sqlite3_context*), - FuncDestructor *pDestructor -){ - FuncDef *p; - int nName; - - assert( sqlite3_mutex_held(db->mutex) ); - if( zFunctionName==0 || - (xFunc && (xFinal || xStep)) || - (!xFunc && (xFinal && !xStep)) || - (!xFunc && (!xFinal && xStep)) || - (nArg<-1 || nArg>SQLITE_MAX_FUNCTION_ARG) || - (255<(nName = sqlite3Strlen30( zFunctionName))) ){ - return SQLITE_MISUSE_BKPT; - } - -#ifndef SQLITE_OMIT_UTF16 - /* If SQLITE_UTF16 is specified as the encoding type, transform this - ** to one of SQLITE_UTF16LE or SQLITE_UTF16BE using the - ** SQLITE_UTF16NATIVE macro. SQLITE_UTF16 is not used internally. - ** - ** If SQLITE_ANY is specified, add three versions of the function - ** to the hash table. - */ - if( enc==SQLITE_UTF16 ){ - enc = SQLITE_UTF16NATIVE; - }else if( enc==SQLITE_ANY ){ - int rc; - rc = sqlite3CreateFunc(db, zFunctionName, nArg, SQLITE_UTF8, - pUserData, xFunc, xStep, xFinal, pDestructor); - if( rc==SQLITE_OK ){ - rc = sqlite3CreateFunc(db, zFunctionName, nArg, SQLITE_UTF16LE, - pUserData, xFunc, xStep, xFinal, pDestructor); - } - if( rc!=SQLITE_OK ){ - return rc; - } - enc = SQLITE_UTF16BE; - } -#else - enc = SQLITE_UTF8; -#endif - - /* Check if an existing function is being overridden or deleted. If so, - ** and there are active VMs, then return SQLITE_BUSY. If a function - ** is being overridden/deleted but there are no active VMs, allow the - ** operation to continue but invalidate all precompiled statements. - */ - p = sqlite3FindFunction(db, zFunctionName, nName, nArg, (u8)enc, 0); - if( p && p->iPrefEnc==enc && p->nArg==nArg ){ - if( db->activeVdbeCnt ){ - sqlite3Error(db, SQLITE_BUSY, - "unable to delete/modify user-function due to active statements"); - assert( !db->mallocFailed ); - return SQLITE_BUSY; - }else{ - sqlite3ExpirePreparedStatements(db); - } - } - - p = sqlite3FindFunction(db, zFunctionName, nName, nArg, (u8)enc, 1); - assert(p || db->mallocFailed); - if( !p ){ - return SQLITE_NOMEM; - } - - /* If an older version of the function with a configured destructor is - ** being replaced invoke the destructor function here. */ - functionDestroy(db, p); - - if( pDestructor ){ - pDestructor->nRef++; - } - p->pDestructor = pDestructor; - p->flags = 0; - p->xFunc = xFunc; - p->xStep = xStep; - p->xFinalize = xFinal; - p->pUserData = pUserData; - p->nArg = (u16)nArg; - return SQLITE_OK; -} - -/* -** Create new user functions. -*/ -int sqlite3_create_function( - sqlite3 *db, - const char *zFunc, - int nArg, - int enc, - void *p, - void (*xFunc)(sqlite3_context*,int,sqlite3_value **), - void (*xStep)(sqlite3_context*,int,sqlite3_value **), - void (*xFinal)(sqlite3_context*) -){ - return sqlite3_create_function_v2(db, zFunc, nArg, enc, p, xFunc, xStep, - xFinal, 0); -} - -int sqlite3_create_function_v2( - sqlite3 *db, - const char *zFunc, - int nArg, - int enc, - void *p, - void (*xFunc)(sqlite3_context*,int,sqlite3_value **), - void (*xStep)(sqlite3_context*,int,sqlite3_value **), - void (*xFinal)(sqlite3_context*), - void (*xDestroy)(void *) -){ - int rc = SQLITE_ERROR; - FuncDestructor *pArg = 0; - sqlite3_mutex_enter(db->mutex); - if( xDestroy ){ - pArg = (FuncDestructor *)sqlite3DbMallocZero(db, sizeof(FuncDestructor)); - if( !pArg ){ - xDestroy(p); - goto out; - } - pArg->xDestroy = xDestroy; - pArg->pUserData = p; - } - rc = sqlite3CreateFunc(db, zFunc, nArg, enc, p, xFunc, xStep, xFinal, pArg); - if( pArg && pArg->nRef==0 ){ - assert( rc!=SQLITE_OK ); - xDestroy(p); - sqlite3DbFree(db, pArg); - } - - out: - rc = sqlite3ApiExit(db, rc); - sqlite3_mutex_leave(db->mutex); - return rc; -} - -#ifndef SQLITE_OMIT_UTF16 -int sqlite3_create_function16( - sqlite3 *db, - const void *zFunctionName, - int nArg, - int eTextRep, - void *p, - void (*xFunc)(sqlite3_context*,int,sqlite3_value**), - void (*xStep)(sqlite3_context*,int,sqlite3_value**), - void (*xFinal)(sqlite3_context*) -){ - int rc; - char *zFunc8; - sqlite3_mutex_enter(db->mutex); - assert( !db->mallocFailed ); - zFunc8 = sqlite3Utf16to8(db, zFunctionName, -1, SQLITE_UTF16NATIVE); - rc = sqlite3CreateFunc(db, zFunc8, nArg, eTextRep, p, xFunc, xStep, xFinal,0); - sqlite3DbFree(db, zFunc8); - rc = sqlite3ApiExit(db, rc); - sqlite3_mutex_leave(db->mutex); - return rc; -} -#endif - - -/* -** Declare that a function has been overloaded by a virtual table. -** -** If the function already exists as a regular global function, then -** this routine is a no-op. If the function does not exist, then create -** a new one that always throws a run-time error. -** -** When virtual tables intend to provide an overloaded function, they -** should call this routine to make sure the global function exists. -** A global function must exist in order for name resolution to work -** properly. -*/ -int sqlite3_overload_function( - sqlite3 *db, - const char *zName, - int nArg -){ - int nName = sqlite3Strlen30(zName); - int rc = SQLITE_OK; - sqlite3_mutex_enter(db->mutex); - if( sqlite3FindFunction(db, zName, nName, nArg, SQLITE_UTF8, 0)==0 ){ - rc = sqlite3CreateFunc(db, zName, nArg, SQLITE_UTF8, - 0, sqlite3InvalidFunction, 0, 0, 0); - } - rc = sqlite3ApiExit(db, rc); - sqlite3_mutex_leave(db->mutex); - return rc; -} - -#ifndef SQLITE_OMIT_TRACE -/* -** Register a trace function. The pArg from the previously registered trace -** is returned. -** -** A NULL trace function means that no tracing is executes. A non-NULL -** trace is a pointer to a function that is invoked at the start of each -** SQL statement. -*/ -void *sqlite3_trace(sqlite3 *db, void (*xTrace)(void*,const char*), void *pArg){ - void *pOld; - sqlite3_mutex_enter(db->mutex); - pOld = db->pTraceArg; - db->xTrace = xTrace; - db->pTraceArg = pArg; - sqlite3_mutex_leave(db->mutex); - return pOld; -} -/* -** Register a profile function. The pArg from the previously registered -** profile function is returned. -** -** A NULL profile function means that no profiling is executes. A non-NULL -** profile is a pointer to a function that is invoked at the conclusion of -** each SQL statement that is run. -*/ -void *sqlite3_profile( - sqlite3 *db, - void (*xProfile)(void*,const char*,sqlite_uint64), - void *pArg -){ - void *pOld; - sqlite3_mutex_enter(db->mutex); - pOld = db->pProfileArg; - db->xProfile = xProfile; - db->pProfileArg = pArg; - sqlite3_mutex_leave(db->mutex); - return pOld; -} -#endif /* SQLITE_OMIT_TRACE */ - -/*** EXPERIMENTAL *** -** -** Register a function to be invoked when a transaction comments. -** If the invoked function returns non-zero, then the commit becomes a -** rollback. -*/ -void *sqlite3_commit_hook( - sqlite3 *db, /* Attach the hook to this database */ - int (*xCallback)(void*), /* Function to invoke on each commit */ - void *pArg /* Argument to the function */ -){ - void *pOld; - sqlite3_mutex_enter(db->mutex); - pOld = db->pCommitArg; - db->xCommitCallback = xCallback; - db->pCommitArg = pArg; - sqlite3_mutex_leave(db->mutex); - return pOld; -} - -/* -** Register a callback to be invoked each time a row is updated, -** inserted or deleted using this database connection. -*/ -void *sqlite3_update_hook( - sqlite3 *db, /* Attach the hook to this database */ - void (*xCallback)(void*,int,char const *,char const *,sqlite_int64), - void *pArg /* Argument to the function */ -){ - void *pRet; - sqlite3_mutex_enter(db->mutex); - pRet = db->pUpdateArg; - db->xUpdateCallback = xCallback; - db->pUpdateArg = pArg; - sqlite3_mutex_leave(db->mutex); - return pRet; -} - -/* -** Register a callback to be invoked each time a transaction is rolled -** back by this database connection. -*/ -void *sqlite3_rollback_hook( - sqlite3 *db, /* Attach the hook to this database */ - void (*xCallback)(void*), /* Callback function */ - void *pArg /* Argument to the function */ -){ - void *pRet; - sqlite3_mutex_enter(db->mutex); - pRet = db->pRollbackArg; - db->xRollbackCallback = xCallback; - db->pRollbackArg = pArg; - sqlite3_mutex_leave(db->mutex); - return pRet; -} - -#ifndef SQLITE_OMIT_WAL -/* -** The sqlite3_wal_hook() callback registered by sqlite3_wal_autocheckpoint(). -** Invoke sqlite3_wal_checkpoint if the number of frames in the log file -** is greater than sqlite3.pWalArg cast to an integer (the value configured by -** wal_autocheckpoint()). -*/ -int sqlite3WalDefaultHook( - void *pClientData, /* Argument */ - sqlite3 *db, /* Connection */ - const char *zDb, /* Database */ - int nFrame /* Size of WAL */ -){ - if( nFrame>=SQLITE_PTR_TO_INT(pClientData) ){ - sqlite3BeginBenignMalloc(); - sqlite3_wal_checkpoint(db, zDb); - sqlite3EndBenignMalloc(); - } - return SQLITE_OK; -} -#endif /* SQLITE_OMIT_WAL */ - -/* -** Configure an sqlite3_wal_hook() callback to automatically checkpoint -** a database after committing a transaction if there are nFrame or -** more frames in the log file. Passing zero or a negative value as the -** nFrame parameter disables automatic checkpoints entirely. -** -** The callback registered by this function replaces any existing callback -** registered using sqlite3_wal_hook(). Likewise, registering a callback -** using sqlite3_wal_hook() disables the automatic checkpoint mechanism -** configured by this function. -*/ -int sqlite3_wal_autocheckpoint(sqlite3 *db, int nFrame){ -#ifdef SQLITE_OMIT_WAL - UNUSED_PARAMETER(db); - UNUSED_PARAMETER(nFrame); -#else - if( nFrame>0 ){ - sqlite3_wal_hook(db, sqlite3WalDefaultHook, SQLITE_INT_TO_PTR(nFrame)); - }else{ - sqlite3_wal_hook(db, 0, 0); - } -#endif - return SQLITE_OK; -} - -/* -** Register a callback to be invoked each time a transaction is written -** into the write-ahead-log by this database connection. -*/ -void *sqlite3_wal_hook( - sqlite3 *db, /* Attach the hook to this db handle */ - int(*xCallback)(void *, sqlite3*, const char*, int), - void *pArg /* First argument passed to xCallback() */ -){ -#ifndef SQLITE_OMIT_WAL - void *pRet; - sqlite3_mutex_enter(db->mutex); - pRet = db->pWalArg; - db->xWalCallback = xCallback; - db->pWalArg = pArg; - sqlite3_mutex_leave(db->mutex); - return pRet; -#else - return 0; -#endif -} - -/* -** Checkpoint database zDb. -*/ -int sqlite3_wal_checkpoint_v2( - sqlite3 *db, /* Database handle */ - const char *zDb, /* Name of attached database (or NULL) */ - int eMode, /* SQLITE_CHECKPOINT_* value */ - int *pnLog, /* OUT: Size of WAL log in frames */ - int *pnCkpt /* OUT: Total number of frames checkpointed */ -){ -#ifdef SQLITE_OMIT_WAL - return SQLITE_OK; -#else - int rc; /* Return code */ - int iDb = SQLITE_MAX_ATTACHED; /* sqlite3.aDb[] index of db to checkpoint */ - - /* Initialize the output variables to -1 in case an error occurs. */ - if( pnLog ) *pnLog = -1; - if( pnCkpt ) *pnCkpt = -1; - - assert( SQLITE_CHECKPOINT_FULL>SQLITE_CHECKPOINT_PASSIVE ); - assert( SQLITE_CHECKPOINT_FULLSQLITE_CHECKPOINT_RESTART ){ - return SQLITE_MISUSE; - } - - sqlite3_mutex_enter(db->mutex); - if( zDb && zDb[0] ){ - iDb = sqlite3FindDbName(db, zDb); - } - if( iDb<0 ){ - rc = SQLITE_ERROR; - sqlite3Error(db, SQLITE_ERROR, "unknown database: %s", zDb); - }else{ - rc = sqlite3Checkpoint(db, iDb, eMode, pnLog, pnCkpt); - sqlite3Error(db, rc, 0); - } - rc = sqlite3ApiExit(db, rc); - sqlite3_mutex_leave(db->mutex); - return rc; -#endif -} - - -/* -** Checkpoint database zDb. If zDb is NULL, or if the buffer zDb points -** to contains a zero-length string, all attached databases are -** checkpointed. -*/ -int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb){ - return sqlite3_wal_checkpoint_v2(db, zDb, SQLITE_CHECKPOINT_PASSIVE, 0, 0); -} - -#ifndef SQLITE_OMIT_WAL -/* -** Run a checkpoint on database iDb. This is a no-op if database iDb is -** not currently open in WAL mode. -** -** If a transaction is open on the database being checkpointed, this -** function returns SQLITE_LOCKED and a checkpoint is not attempted. If -** an error occurs while running the checkpoint, an SQLite error code is -** returned (i.e. SQLITE_IOERR). Otherwise, SQLITE_OK. -** -** The mutex on database handle db should be held by the caller. The mutex -** associated with the specific b-tree being checkpointed is taken by -** this function while the checkpoint is running. -** -** If iDb is passed SQLITE_MAX_ATTACHED, then all attached databases are -** checkpointed. If an error is encountered it is returned immediately - -** no attempt is made to checkpoint any remaining databases. -** -** Parameter eMode is one of SQLITE_CHECKPOINT_PASSIVE, FULL or RESTART. -*/ -int sqlite3Checkpoint(sqlite3 *db, int iDb, int eMode, int *pnLog, int *pnCkpt){ - int rc = SQLITE_OK; /* Return code */ - int i; /* Used to iterate through attached dbs */ - int bBusy = 0; /* True if SQLITE_BUSY has been encountered */ - - assert( sqlite3_mutex_held(db->mutex) ); - assert( !pnLog || *pnLog==-1 ); - assert( !pnCkpt || *pnCkpt==-1 ); - - for(i=0; inDb && rc==SQLITE_OK; i++){ - if( i==iDb || iDb==SQLITE_MAX_ATTACHED ){ - rc = sqlite3BtreeCheckpoint(db->aDb[i].pBt, eMode, pnLog, pnCkpt); - pnLog = 0; - pnCkpt = 0; - if( rc==SQLITE_BUSY ){ - bBusy = 1; - rc = SQLITE_OK; - } - } - } - - return (rc==SQLITE_OK && bBusy) ? SQLITE_BUSY : rc; -} -#endif /* SQLITE_OMIT_WAL */ - -/* -** This function returns true if main-memory should be used instead of -** a temporary file for transient pager files and statement journals. -** The value returned depends on the value of db->temp_store (runtime -** parameter) and the compile time value of SQLITE_TEMP_STORE. The -** following table describes the relationship between these two values -** and this functions return value. -** -** SQLITE_TEMP_STORE db->temp_store Location of temporary database -** ----------------- -------------- ------------------------------ -** 0 any file (return 0) -** 1 1 file (return 0) -** 1 2 memory (return 1) -** 1 0 file (return 0) -** 2 1 file (return 0) -** 2 2 memory (return 1) -** 2 0 memory (return 1) -** 3 any memory (return 1) -*/ -int sqlite3TempInMemory(const sqlite3 *db){ -#if SQLITE_TEMP_STORE==1 - return ( db->temp_store==2 ); -#endif -#if SQLITE_TEMP_STORE==2 - return ( db->temp_store!=1 ); -#endif -#if SQLITE_TEMP_STORE==3 - return 1; -#endif -#if SQLITE_TEMP_STORE<1 || SQLITE_TEMP_STORE>3 - return 0; -#endif -} - -/* -** Return UTF-8 encoded English language explanation of the most recent -** error. -*/ -const char *sqlite3_errmsg(sqlite3 *db){ - const char *z; - if( !db ){ - return sqlite3ErrStr(SQLITE_NOMEM); - } - if( !sqlite3SafetyCheckSickOrOk(db) ){ - return sqlite3ErrStr(SQLITE_MISUSE_BKPT); - } - sqlite3_mutex_enter(db->mutex); - if( db->mallocFailed ){ - z = sqlite3ErrStr(SQLITE_NOMEM); - }else{ - z = (char*)sqlite3_value_text(db->pErr); - assert( !db->mallocFailed ); - if( z==0 ){ - z = sqlite3ErrStr(db->errCode); - } - } - sqlite3_mutex_leave(db->mutex); - return z; -} - -#ifndef SQLITE_OMIT_UTF16 -/* -** Return UTF-16 encoded English language explanation of the most recent -** error. -*/ -const void *sqlite3_errmsg16(sqlite3 *db){ - static const u16 outOfMem[] = { - 'o', 'u', 't', ' ', 'o', 'f', ' ', 'm', 'e', 'm', 'o', 'r', 'y', 0 - }; - static const u16 misuse[] = { - 'l', 'i', 'b', 'r', 'a', 'r', 'y', ' ', - 'r', 'o', 'u', 't', 'i', 'n', 'e', ' ', - 'c', 'a', 'l', 'l', 'e', 'd', ' ', - 'o', 'u', 't', ' ', - 'o', 'f', ' ', - 's', 'e', 'q', 'u', 'e', 'n', 'c', 'e', 0 - }; - - const void *z; - if( !db ){ - return (void *)outOfMem; - } - if( !sqlite3SafetyCheckSickOrOk(db) ){ - return (void *)misuse; - } - sqlite3_mutex_enter(db->mutex); - if( db->mallocFailed ){ - z = (void *)outOfMem; - }else{ - z = sqlite3_value_text16(db->pErr); - if( z==0 ){ - sqlite3ValueSetStr(db->pErr, -1, sqlite3ErrStr(db->errCode), - SQLITE_UTF8, SQLITE_STATIC); - z = sqlite3_value_text16(db->pErr); - } - /* A malloc() may have failed within the call to sqlite3_value_text16() - ** above. If this is the case, then the db->mallocFailed flag needs to - ** be cleared before returning. Do this directly, instead of via - ** sqlite3ApiExit(), to avoid setting the database handle error message. - */ - db->mallocFailed = 0; - } - sqlite3_mutex_leave(db->mutex); - return z; -} -#endif /* SQLITE_OMIT_UTF16 */ - -/* -** Return the most recent error code generated by an SQLite routine. If NULL is -** passed to this function, we assume a malloc() failed during sqlite3_open(). -*/ -int sqlite3_errcode(sqlite3 *db){ - if( db && !sqlite3SafetyCheckSickOrOk(db) ){ - return SQLITE_MISUSE_BKPT; - } - if( !db || db->mallocFailed ){ - return SQLITE_NOMEM; - } - return db->errCode & db->errMask; -} -int sqlite3_extended_errcode(sqlite3 *db){ - if( db && !sqlite3SafetyCheckSickOrOk(db) ){ - return SQLITE_MISUSE_BKPT; - } - if( !db || db->mallocFailed ){ - return SQLITE_NOMEM; - } - return db->errCode; -} - -/* -** Create a new collating function for database "db". The name is zName -** and the encoding is enc. -*/ -static int createCollation( - sqlite3* db, - const char *zName, - u8 enc, - u8 collType, - void* pCtx, - int(*xCompare)(void*,int,const void*,int,const void*), - void(*xDel)(void*) -){ - CollSeq *pColl; - int enc2; - int nName = sqlite3Strlen30(zName); - - assert( sqlite3_mutex_held(db->mutex) ); - - /* If SQLITE_UTF16 is specified as the encoding type, transform this - ** to one of SQLITE_UTF16LE or SQLITE_UTF16BE using the - ** SQLITE_UTF16NATIVE macro. SQLITE_UTF16 is not used internally. - */ - enc2 = enc; - testcase( enc2==SQLITE_UTF16 ); - testcase( enc2==SQLITE_UTF16_ALIGNED ); - if( enc2==SQLITE_UTF16 || enc2==SQLITE_UTF16_ALIGNED ){ - enc2 = SQLITE_UTF16NATIVE; - } - if( enc2SQLITE_UTF16BE ){ - return SQLITE_MISUSE_BKPT; - } - - /* Check if this call is removing or replacing an existing collation - ** sequence. If so, and there are active VMs, return busy. If there - ** are no active VMs, invalidate any pre-compiled statements. - */ - pColl = sqlite3FindCollSeq(db, (u8)enc2, zName, 0); - if( pColl && pColl->xCmp ){ - if( db->activeVdbeCnt ){ - sqlite3Error(db, SQLITE_BUSY, - "unable to delete/modify collation sequence due to active statements"); - return SQLITE_BUSY; - } - sqlite3ExpirePreparedStatements(db); - - /* If collation sequence pColl was created directly by a call to - ** sqlite3_create_collation, and not generated by synthCollSeq(), - ** then any copies made by synthCollSeq() need to be invalidated. - ** Also, collation destructor - CollSeq.xDel() - function may need - ** to be called. - */ - if( (pColl->enc & ~SQLITE_UTF16_ALIGNED)==enc2 ){ - CollSeq *aColl = sqlite3HashFind(&db->aCollSeq, zName, nName); - int j; - for(j=0; j<3; j++){ - CollSeq *p = &aColl[j]; - if( p->enc==pColl->enc ){ - if( p->xDel ){ - p->xDel(p->pUser); - } - p->xCmp = 0; - } - } - } - } - - pColl = sqlite3FindCollSeq(db, (u8)enc2, zName, 1); - if( pColl==0 ) return SQLITE_NOMEM; - pColl->xCmp = xCompare; - pColl->pUser = pCtx; - pColl->xDel = xDel; - pColl->enc = (u8)(enc2 | (enc & SQLITE_UTF16_ALIGNED)); - pColl->type = collType; - sqlite3Error(db, SQLITE_OK, 0); - return SQLITE_OK; -} - - -/* -** This array defines hard upper bounds on limit values. The -** initializer must be kept in sync with the SQLITE_LIMIT_* -** #defines in sqlite3.h. -*/ -static const int aHardLimit[] = { - SQLITE_MAX_LENGTH, - SQLITE_MAX_SQL_LENGTH, - SQLITE_MAX_COLUMN, - SQLITE_MAX_EXPR_DEPTH, - SQLITE_MAX_COMPOUND_SELECT, - SQLITE_MAX_VDBE_OP, - SQLITE_MAX_FUNCTION_ARG, - SQLITE_MAX_ATTACHED, - SQLITE_MAX_LIKE_PATTERN_LENGTH, - SQLITE_MAX_VARIABLE_NUMBER, - SQLITE_MAX_TRIGGER_DEPTH, -}; - -/* -** Make sure the hard limits are set to reasonable values -*/ -#if SQLITE_MAX_LENGTH<100 -# error SQLITE_MAX_LENGTH must be at least 100 -#endif -#if SQLITE_MAX_SQL_LENGTH<100 -# error SQLITE_MAX_SQL_LENGTH must be at least 100 -#endif -#if SQLITE_MAX_SQL_LENGTH>SQLITE_MAX_LENGTH -# error SQLITE_MAX_SQL_LENGTH must not be greater than SQLITE_MAX_LENGTH -#endif -#if SQLITE_MAX_COMPOUND_SELECT<2 -# error SQLITE_MAX_COMPOUND_SELECT must be at least 2 -#endif -#if SQLITE_MAX_VDBE_OP<40 -# error SQLITE_MAX_VDBE_OP must be at least 40 -#endif -#if SQLITE_MAX_FUNCTION_ARG<0 || SQLITE_MAX_FUNCTION_ARG>1000 -# error SQLITE_MAX_FUNCTION_ARG must be between 0 and 1000 -#endif -#if SQLITE_MAX_ATTACHED<0 || SQLITE_MAX_ATTACHED>62 -# error SQLITE_MAX_ATTACHED must be between 0 and 62 -#endif -#if SQLITE_MAX_LIKE_PATTERN_LENGTH<1 -# error SQLITE_MAX_LIKE_PATTERN_LENGTH must be at least 1 -#endif -#if SQLITE_MAX_COLUMN>32767 -# error SQLITE_MAX_COLUMN must not exceed 32767 -#endif -#if SQLITE_MAX_TRIGGER_DEPTH<1 -# error SQLITE_MAX_TRIGGER_DEPTH must be at least 1 -#endif - - -/* -** Change the value of a limit. Report the old value. -** If an invalid limit index is supplied, report -1. -** Make no changes but still report the old value if the -** new limit is negative. -** -** A new lower limit does not shrink existing constructs. -** It merely prevents new constructs that exceed the limit -** from forming. -*/ -int sqlite3_limit(sqlite3 *db, int limitId, int newLimit){ - int oldLimit; - - - /* EVIDENCE-OF: R-30189-54097 For each limit category SQLITE_LIMIT_NAME - ** there is a hard upper bound set at compile-time by a C preprocessor - ** macro called SQLITE_MAX_NAME. (The "_LIMIT_" in the name is changed to - ** "_MAX_".) - */ - assert( aHardLimit[SQLITE_LIMIT_LENGTH]==SQLITE_MAX_LENGTH ); - assert( aHardLimit[SQLITE_LIMIT_SQL_LENGTH]==SQLITE_MAX_SQL_LENGTH ); - assert( aHardLimit[SQLITE_LIMIT_COLUMN]==SQLITE_MAX_COLUMN ); - assert( aHardLimit[SQLITE_LIMIT_EXPR_DEPTH]==SQLITE_MAX_EXPR_DEPTH ); - assert( aHardLimit[SQLITE_LIMIT_COMPOUND_SELECT]==SQLITE_MAX_COMPOUND_SELECT); - assert( aHardLimit[SQLITE_LIMIT_VDBE_OP]==SQLITE_MAX_VDBE_OP ); - assert( aHardLimit[SQLITE_LIMIT_FUNCTION_ARG]==SQLITE_MAX_FUNCTION_ARG ); - assert( aHardLimit[SQLITE_LIMIT_ATTACHED]==SQLITE_MAX_ATTACHED ); - assert( aHardLimit[SQLITE_LIMIT_LIKE_PATTERN_LENGTH]== - SQLITE_MAX_LIKE_PATTERN_LENGTH ); - assert( aHardLimit[SQLITE_LIMIT_VARIABLE_NUMBER]==SQLITE_MAX_VARIABLE_NUMBER); - assert( aHardLimit[SQLITE_LIMIT_TRIGGER_DEPTH]==SQLITE_MAX_TRIGGER_DEPTH ); - assert( SQLITE_LIMIT_TRIGGER_DEPTH==(SQLITE_N_LIMIT-1) ); - - - if( limitId<0 || limitId>=SQLITE_N_LIMIT ){ - return -1; - } - oldLimit = db->aLimit[limitId]; - if( newLimit>=0 ){ /* IMP: R-52476-28732 */ - if( newLimit>aHardLimit[limitId] ){ - newLimit = aHardLimit[limitId]; /* IMP: R-51463-25634 */ - } - db->aLimit[limitId] = newLimit; - } - return oldLimit; /* IMP: R-53341-35419 */ -} - -/* -** This function is used to parse both URIs and non-URI filenames passed by the -** user to API functions sqlite3_open() or sqlite3_open_v2(), and for database -** URIs specified as part of ATTACH statements. -** -** The first argument to this function is the name of the VFS to use (or -** a NULL to signify the default VFS) if the URI does not contain a "vfs=xxx" -** query parameter. The second argument contains the URI (or non-URI filename) -** itself. When this function is called the *pFlags variable should contain -** the default flags to open the database handle with. The value stored in -** *pFlags may be updated before returning if the URI filename contains -** "cache=xxx" or "mode=xxx" query parameters. -** -** If successful, SQLITE_OK is returned. In this case *ppVfs is set to point to -** the VFS that should be used to open the database file. *pzFile is set to -** point to a buffer containing the name of the file to open. It is the -** responsibility of the caller to eventually call sqlite3_free() to release -** this buffer. -** -** If an error occurs, then an SQLite error code is returned and *pzErrMsg -** may be set to point to a buffer containing an English language error -** message. It is the responsibility of the caller to eventually release -** this buffer by calling sqlite3_free(). -*/ -int sqlite3ParseUri( - const char *zDefaultVfs, /* VFS to use if no "vfs=xxx" query option */ - const char *zUri, /* Nul-terminated URI to parse */ - unsigned int *pFlags, /* IN/OUT: SQLITE_OPEN_XXX flags */ - sqlite3_vfs **ppVfs, /* OUT: VFS to use */ - char **pzFile, /* OUT: Filename component of URI */ - char **pzErrMsg /* OUT: Error message (if rc!=SQLITE_OK) */ -){ - int rc = SQLITE_OK; - unsigned int flags = *pFlags; - const char *zVfs = zDefaultVfs; - char *zFile; - char c; - int nUri = sqlite3Strlen30(zUri); - - assert( *pzErrMsg==0 ); - - if( ((flags & SQLITE_OPEN_URI) || sqlite3GlobalConfig.bOpenUri) - && nUri>=5 && memcmp(zUri, "file:", 5)==0 - ){ - char *zOpt; - int eState; /* Parser state when parsing URI */ - int iIn; /* Input character index */ - int iOut = 0; /* Output character index */ - int nByte = nUri+2; /* Bytes of space to allocate */ - - /* Make sure the SQLITE_OPEN_URI flag is set to indicate to the VFS xOpen - ** method that there may be extra parameters following the file-name. */ - flags |= SQLITE_OPEN_URI; - - for(iIn=0; iIn=0 && octet<256 ); - if( octet==0 ){ - /* This branch is taken when "%00" appears within the URI. In this - ** case we ignore all text in the remainder of the path, name or - ** value currently being parsed. So ignore the current character - ** and skip to the next "?", "=" or "&", as appropriate. */ - while( (c = zUri[iIn])!=0 && c!='#' - && (eState!=0 || c!='?') - && (eState!=1 || (c!='=' && c!='&')) - && (eState!=2 || c!='&') - ){ - iIn++; - } - continue; - } - c = octet; - }else if( eState==1 && (c=='&' || c=='=') ){ - if( zFile[iOut-1]==0 ){ - /* An empty option name. Ignore this option altogether. */ - while( zUri[iIn] && zUri[iIn]!='#' && zUri[iIn-1]!='&' ) iIn++; - continue; - } - if( c=='&' ){ - zFile[iOut++] = '\0'; - }else{ - eState = 2; - } - c = 0; - }else if( (eState==0 && c=='?') || (eState==2 && c=='&') ){ - c = 0; - eState = 1; - } - zFile[iOut++] = c; - } - if( eState==1 ) zFile[iOut++] = '\0'; - zFile[iOut++] = '\0'; - zFile[iOut++] = '\0'; - - /* Check if there were any options specified that should be interpreted - ** here. Options that are interpreted here include "vfs" and those that - ** correspond to flags that may be passed to the sqlite3_open_v2() - ** method. */ - zOpt = &zFile[sqlite3Strlen30(zFile)+1]; - while( zOpt[0] ){ - int nOpt = sqlite3Strlen30(zOpt); - char *zVal = &zOpt[nOpt+1]; - int nVal = sqlite3Strlen30(zVal); - - if( nOpt==3 && memcmp("vfs", zOpt, 3)==0 ){ - zVfs = zVal; - }else{ - struct OpenMode { - const char *z; - int mode; - } *aMode = 0; - char *zModeType = 0; - int mask = 0; - int limit = 0; - - if( nOpt==5 && memcmp("cache", zOpt, 5)==0 ){ - static struct OpenMode aCacheMode[] = { - { "shared", SQLITE_OPEN_SHAREDCACHE }, - { "private", SQLITE_OPEN_PRIVATECACHE }, - { 0, 0 } - }; - - mask = SQLITE_OPEN_SHAREDCACHE|SQLITE_OPEN_PRIVATECACHE; - aMode = aCacheMode; - limit = mask; - zModeType = "cache"; - } - if( nOpt==4 && memcmp("mode", zOpt, 4)==0 ){ - static struct OpenMode aOpenMode[] = { - { "ro", SQLITE_OPEN_READONLY }, - { "rw", SQLITE_OPEN_READWRITE }, - { "rwc", SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE }, - { 0, 0 } - }; - - mask = SQLITE_OPEN_READONLY|SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE; - aMode = aOpenMode; - limit = mask & flags; - zModeType = "access"; - } - - if( aMode ){ - int i; - int mode = 0; - for(i=0; aMode[i].z; i++){ - const char *z = aMode[i].z; - if( nVal==sqlite3Strlen30(z) && 0==memcmp(zVal, z, nVal) ){ - mode = aMode[i].mode; - break; - } - } - if( mode==0 ){ - *pzErrMsg = sqlite3_mprintf("no such %s mode: %s", zModeType, zVal); - rc = SQLITE_ERROR; - goto parse_uri_out; - } - if( mode>limit ){ - *pzErrMsg = sqlite3_mprintf("%s mode not allowed: %s", - zModeType, zVal); - rc = SQLITE_PERM; - goto parse_uri_out; - } - flags = (flags & ~mask) | mode; - } - } - - zOpt = &zVal[nVal+1]; - } - - }else{ - zFile = sqlite3_malloc(nUri+2); - if( !zFile ) return SQLITE_NOMEM; - memcpy(zFile, zUri, nUri); - zFile[nUri] = '\0'; - zFile[nUri+1] = '\0'; - } - - *ppVfs = sqlite3_vfs_find(zVfs); - if( *ppVfs==0 ){ - *pzErrMsg = sqlite3_mprintf("no such vfs: %s", zVfs); - rc = SQLITE_ERROR; - } - parse_uri_out: - if( rc!=SQLITE_OK ){ - sqlite3_free(zFile); - zFile = 0; - } - *pFlags = flags; - *pzFile = zFile; - return rc; -} - - -/* -** This routine does the work of opening a database on behalf of -** sqlite3_open() and sqlite3_open16(). The database filename "zFilename" -** is UTF-8 encoded. -*/ -static int openDatabase( - const char *zFilename, /* Database filename UTF-8 encoded */ - sqlite3 **ppDb, /* OUT: Returned database handle */ - unsigned int flags, /* Operational flags */ - const char *zVfs /* Name of the VFS to use */ -){ - sqlite3 *db; /* Store allocated handle here */ - int rc; /* Return code */ - int isThreadsafe; /* True for threadsafe connections */ - char *zOpen = 0; /* Filename argument to pass to BtreeOpen() */ - char *zErrMsg = 0; /* Error message from sqlite3ParseUri() */ - - *ppDb = 0; -#ifndef SQLITE_OMIT_AUTOINIT - rc = sqlite3_initialize(); - if( rc ) return rc; -#endif - - /* Only allow sensible combinations of bits in the flags argument. - ** Throw an error if any non-sense combination is used. If we - ** do not block illegal combinations here, it could trigger - ** assert() statements in deeper layers. Sensible combinations - ** are: - ** - ** 1: SQLITE_OPEN_READONLY - ** 2: SQLITE_OPEN_READWRITE - ** 6: SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE - */ - assert( SQLITE_OPEN_READONLY == 0x01 ); - assert( SQLITE_OPEN_READWRITE == 0x02 ); - assert( SQLITE_OPEN_CREATE == 0x04 ); - testcase( (1<<(flags&7))==0x02 ); /* READONLY */ - testcase( (1<<(flags&7))==0x04 ); /* READWRITE */ - testcase( (1<<(flags&7))==0x40 ); /* READWRITE | CREATE */ - if( ((1<<(flags&7)) & 0x46)==0 ) return SQLITE_MISUSE_BKPT; - - if( sqlite3GlobalConfig.bCoreMutex==0 ){ - isThreadsafe = 0; - }else if( flags & SQLITE_OPEN_NOMUTEX ){ - isThreadsafe = 0; - }else if( flags & SQLITE_OPEN_FULLMUTEX ){ - isThreadsafe = 1; - }else{ - isThreadsafe = sqlite3GlobalConfig.bFullMutex; - } - if( flags & SQLITE_OPEN_PRIVATECACHE ){ - flags &= ~SQLITE_OPEN_SHAREDCACHE; - }else if( sqlite3GlobalConfig.sharedCacheEnabled ){ - flags |= SQLITE_OPEN_SHAREDCACHE; - } - - /* Remove harmful bits from the flags parameter - ** - ** The SQLITE_OPEN_NOMUTEX and SQLITE_OPEN_FULLMUTEX flags were - ** dealt with in the previous code block. Besides these, the only - ** valid input flags for sqlite3_open_v2() are SQLITE_OPEN_READONLY, - ** SQLITE_OPEN_READWRITE, SQLITE_OPEN_CREATE, SQLITE_OPEN_SHAREDCACHE, - ** SQLITE_OPEN_PRIVATECACHE, and some reserved bits. Silently mask - ** off all other flags. - */ - flags &= ~( SQLITE_OPEN_DELETEONCLOSE | - SQLITE_OPEN_EXCLUSIVE | - SQLITE_OPEN_MAIN_DB | - SQLITE_OPEN_TEMP_DB | - SQLITE_OPEN_TRANSIENT_DB | - SQLITE_OPEN_MAIN_JOURNAL | - SQLITE_OPEN_TEMP_JOURNAL | - SQLITE_OPEN_SUBJOURNAL | - SQLITE_OPEN_MASTER_JOURNAL | - SQLITE_OPEN_NOMUTEX | - SQLITE_OPEN_FULLMUTEX | - SQLITE_OPEN_WAL - ); - - /* Allocate the sqlite data structure */ - db = sqlite3MallocZero( sizeof(sqlite3) ); - if( db==0 ) goto opendb_out; - if( isThreadsafe ){ - db->mutex = sqlite3MutexAlloc(SQLITE_MUTEX_RECURSIVE); - if( db->mutex==0 ){ - sqlite3_free(db); - db = 0; - goto opendb_out; - } - } - sqlite3_mutex_enter(db->mutex); - db->errMask = 0xff; - db->nDb = 2; - db->magic = SQLITE_MAGIC_BUSY; - db->aDb = db->aDbStatic; - - assert( sizeof(db->aLimit)==sizeof(aHardLimit) ); - memcpy(db->aLimit, aHardLimit, sizeof(db->aLimit)); - db->autoCommit = 1; - db->nextAutovac = -1; - db->nextPagesize = 0; - db->flags |= SQLITE_ShortColNames | SQLITE_AutoIndex | SQLITE_EnableTrigger -#if SQLITE_DEFAULT_FILE_FORMAT<4 - | SQLITE_LegacyFileFmt -#endif -#ifdef SQLITE_ENABLE_LOAD_EXTENSION - | SQLITE_LoadExtension -#endif -#if SQLITE_DEFAULT_RECURSIVE_TRIGGERS - | SQLITE_RecTriggers -#endif -#if defined(SQLITE_DEFAULT_FOREIGN_KEYS) && SQLITE_DEFAULT_FOREIGN_KEYS - | SQLITE_ForeignKeys -#endif - ; - sqlite3HashInit(&db->aCollSeq); -#ifndef SQLITE_OMIT_VIRTUALTABLE - sqlite3HashInit(&db->aModule); -#endif - - /* Add the default collation sequence BINARY. BINARY works for both UTF-8 - ** and UTF-16, so add a version for each to avoid any unnecessary - ** conversions. The only error that can occur here is a malloc() failure. - */ - createCollation(db, "BINARY", SQLITE_UTF8, SQLITE_COLL_BINARY, 0, - binCollFunc, 0); - createCollation(db, "BINARY", SQLITE_UTF16BE, SQLITE_COLL_BINARY, 0, - binCollFunc, 0); - createCollation(db, "BINARY", SQLITE_UTF16LE, SQLITE_COLL_BINARY, 0, - binCollFunc, 0); - createCollation(db, "RTRIM", SQLITE_UTF8, SQLITE_COLL_USER, (void*)1, - binCollFunc, 0); - if( db->mallocFailed ){ - goto opendb_out; - } - db->pDfltColl = sqlite3FindCollSeq(db, SQLITE_UTF8, "BINARY", 0); - assert( db->pDfltColl!=0 ); - - /* Also add a UTF-8 case-insensitive collation sequence. */ - createCollation(db, "NOCASE", SQLITE_UTF8, SQLITE_COLL_NOCASE, 0, - nocaseCollatingFunc, 0); - - /* Parse the filename/URI argument. */ - db->openFlags = flags; - rc = sqlite3ParseUri(zVfs, zFilename, &flags, &db->pVfs, &zOpen, &zErrMsg); - if( rc!=SQLITE_OK ){ - if( rc==SQLITE_NOMEM ) db->mallocFailed = 1; - sqlite3Error(db, rc, zErrMsg ? "%s" : 0, zErrMsg); - sqlite3_free(zErrMsg); - goto opendb_out; - } - - /* Open the backend database driver */ - rc = sqlite3BtreeOpen(db->pVfs, zOpen, db, &db->aDb[0].pBt, 0, - flags | SQLITE_OPEN_MAIN_DB); - if( rc!=SQLITE_OK ){ - if( rc==SQLITE_IOERR_NOMEM ){ - rc = SQLITE_NOMEM; - } - sqlite3Error(db, rc, 0); - goto opendb_out; - } - db->aDb[0].pSchema = sqlite3SchemaGet(db, db->aDb[0].pBt); - db->aDb[1].pSchema = sqlite3SchemaGet(db, 0); - - - /* The default safety_level for the main database is 'full'; for the temp - ** database it is 'NONE'. This matches the pager layer defaults. - */ - db->aDb[0].zName = "main"; - db->aDb[0].safety_level = 3; - db->aDb[1].zName = "temp"; - db->aDb[1].safety_level = 1; - - db->magic = SQLITE_MAGIC_OPEN; - if( db->mallocFailed ){ - goto opendb_out; - } - - /* Register all built-in functions, but do not attempt to read the - ** database schema yet. This is delayed until the first time the database - ** is accessed. - */ - sqlite3Error(db, SQLITE_OK, 0); - sqlite3RegisterBuiltinFunctions(db); - - /* Load automatic extensions - extensions that have been registered - ** using the sqlite3_automatic_extension() API. - */ - sqlite3AutoLoadExtensions(db); - rc = sqlite3_errcode(db); - if( rc!=SQLITE_OK ){ - goto opendb_out; - } - -#ifdef SQLITE_ENABLE_FTS1 - if( !db->mallocFailed ){ - extern int sqlite3Fts1Init(sqlite3*); - rc = sqlite3Fts1Init(db); - } -#endif - -#ifdef SQLITE_ENABLE_FTS2 - if( !db->mallocFailed && rc==SQLITE_OK ){ - extern int sqlite3Fts2Init(sqlite3*); - rc = sqlite3Fts2Init(db); - } -#endif - -#ifdef SQLITE_ENABLE_FTS3 - if( !db->mallocFailed && rc==SQLITE_OK ){ - rc = sqlite3Fts3Init(db); - } -#endif - -#ifdef SQLITE_ENABLE_ICU - if( !db->mallocFailed && rc==SQLITE_OK ){ - rc = sqlite3IcuInit(db); - } -#endif - -#ifdef SQLITE_ENABLE_RTREE - if( !db->mallocFailed && rc==SQLITE_OK){ - rc = sqlite3RtreeInit(db); - } -#endif - - sqlite3Error(db, rc, 0); - - /* -DSQLITE_DEFAULT_LOCKING_MODE=1 makes EXCLUSIVE the default locking - ** mode. -DSQLITE_DEFAULT_LOCKING_MODE=0 make NORMAL the default locking - ** mode. Doing nothing at all also makes NORMAL the default. - */ -#ifdef SQLITE_DEFAULT_LOCKING_MODE - db->dfltLockMode = SQLITE_DEFAULT_LOCKING_MODE; - sqlite3PagerLockingMode(sqlite3BtreePager(db->aDb[0].pBt), - SQLITE_DEFAULT_LOCKING_MODE); -#endif - - /* Enable the lookaside-malloc subsystem */ - setupLookaside(db, 0, sqlite3GlobalConfig.szLookaside, - sqlite3GlobalConfig.nLookaside); - - sqlite3_wal_autocheckpoint(db, SQLITE_DEFAULT_WAL_AUTOCHECKPOINT); - -opendb_out: - sqlite3_free(zOpen); - if( db ){ - assert( db->mutex!=0 || isThreadsafe==0 || sqlite3GlobalConfig.bFullMutex==0 ); - sqlite3_mutex_leave(db->mutex); - } - rc = sqlite3_errcode(db); - assert( db!=0 || rc==SQLITE_NOMEM ); - if( rc==SQLITE_NOMEM ){ - sqlite3_close(db); - db = 0; - }else if( rc!=SQLITE_OK ){ - db->magic = SQLITE_MAGIC_SICK; - } - *ppDb = db; - return sqlite3ApiExit(0, rc); -} - -/* -** Open a new database handle. -*/ -int sqlite3_open( - const char *zFilename, - sqlite3 **ppDb -){ - return openDatabase(zFilename, ppDb, - SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, 0); -} -int sqlite3_open_v2( - const char *filename, /* Database filename (UTF-8) */ - sqlite3 **ppDb, /* OUT: SQLite db handle */ - int flags, /* Flags */ - const char *zVfs /* Name of VFS module to use */ -){ - return openDatabase(filename, ppDb, (unsigned int)flags, zVfs); -} - -#ifndef SQLITE_OMIT_UTF16 -/* -** Open a new database handle. -*/ -int sqlite3_open16( - const void *zFilename, - sqlite3 **ppDb -){ - char const *zFilename8; /* zFilename encoded in UTF-8 instead of UTF-16 */ - sqlite3_value *pVal; - int rc; - - assert( zFilename ); - assert( ppDb ); - *ppDb = 0; -#ifndef SQLITE_OMIT_AUTOINIT - rc = sqlite3_initialize(); - if( rc ) return rc; -#endif - pVal = sqlite3ValueNew(0); - sqlite3ValueSetStr(pVal, -1, zFilename, SQLITE_UTF16NATIVE, SQLITE_STATIC); - zFilename8 = sqlite3ValueText(pVal, SQLITE_UTF8); - if( zFilename8 ){ - rc = openDatabase(zFilename8, ppDb, - SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, 0); - assert( *ppDb || rc==SQLITE_NOMEM ); - if( rc==SQLITE_OK && !DbHasProperty(*ppDb, 0, DB_SchemaLoaded) ){ - ENC(*ppDb) = SQLITE_UTF16NATIVE; - } - }else{ - rc = SQLITE_NOMEM; - } - sqlite3ValueFree(pVal); - - return sqlite3ApiExit(0, rc); -} -#endif /* SQLITE_OMIT_UTF16 */ - -/* -** Register a new collation sequence with the database handle db. -*/ -int sqlite3_create_collation( - sqlite3* db, - const char *zName, - int enc, - void* pCtx, - int(*xCompare)(void*,int,const void*,int,const void*) -){ - int rc; - sqlite3_mutex_enter(db->mutex); - assert( !db->mallocFailed ); - rc = createCollation(db, zName, (u8)enc, SQLITE_COLL_USER, pCtx, xCompare, 0); - rc = sqlite3ApiExit(db, rc); - sqlite3_mutex_leave(db->mutex); - return rc; -} - -/* -** Register a new collation sequence with the database handle db. -*/ -int sqlite3_create_collation_v2( - sqlite3* db, - const char *zName, - int enc, - void* pCtx, - int(*xCompare)(void*,int,const void*,int,const void*), - void(*xDel)(void*) -){ - int rc; - sqlite3_mutex_enter(db->mutex); - assert( !db->mallocFailed ); - rc = createCollation(db, zName, (u8)enc, SQLITE_COLL_USER, pCtx, xCompare, xDel); - rc = sqlite3ApiExit(db, rc); - sqlite3_mutex_leave(db->mutex); - return rc; -} - -#ifndef SQLITE_OMIT_UTF16 -/* -** Register a new collation sequence with the database handle db. -*/ -int sqlite3_create_collation16( - sqlite3* db, - const void *zName, - int enc, - void* pCtx, - int(*xCompare)(void*,int,const void*,int,const void*) -){ - int rc = SQLITE_OK; - char *zName8; - sqlite3_mutex_enter(db->mutex); - assert( !db->mallocFailed ); - zName8 = sqlite3Utf16to8(db, zName, -1, SQLITE_UTF16NATIVE); - if( zName8 ){ - rc = createCollation(db, zName8, (u8)enc, SQLITE_COLL_USER, pCtx, xCompare, 0); - sqlite3DbFree(db, zName8); - } - rc = sqlite3ApiExit(db, rc); - sqlite3_mutex_leave(db->mutex); - return rc; -} -#endif /* SQLITE_OMIT_UTF16 */ - -/* -** Register a collation sequence factory callback with the database handle -** db. Replace any previously installed collation sequence factory. -*/ -int sqlite3_collation_needed( - sqlite3 *db, - void *pCollNeededArg, - void(*xCollNeeded)(void*,sqlite3*,int eTextRep,const char*) -){ - sqlite3_mutex_enter(db->mutex); - db->xCollNeeded = xCollNeeded; - db->xCollNeeded16 = 0; - db->pCollNeededArg = pCollNeededArg; - sqlite3_mutex_leave(db->mutex); - return SQLITE_OK; -} - -#ifndef SQLITE_OMIT_UTF16 -/* -** Register a collation sequence factory callback with the database handle -** db. Replace any previously installed collation sequence factory. -*/ -int sqlite3_collation_needed16( - sqlite3 *db, - void *pCollNeededArg, - void(*xCollNeeded16)(void*,sqlite3*,int eTextRep,const void*) -){ - sqlite3_mutex_enter(db->mutex); - db->xCollNeeded = 0; - db->xCollNeeded16 = xCollNeeded16; - db->pCollNeededArg = pCollNeededArg; - sqlite3_mutex_leave(db->mutex); - return SQLITE_OK; -} -#endif /* SQLITE_OMIT_UTF16 */ - -#ifndef SQLITE_OMIT_DEPRECATED -/* -** This function is now an anachronism. It used to be used to recover from a -** malloc() failure, but SQLite now does this automatically. -*/ -int sqlite3_global_recover(void){ - return SQLITE_OK; -} -#endif - -/* -** Test to see whether or not the database connection is in autocommit -** mode. Return TRUE if it is and FALSE if not. Autocommit mode is on -** by default. Autocommit is disabled by a BEGIN statement and reenabled -** by the next COMMIT or ROLLBACK. -** -******* THIS IS AN EXPERIMENTAL API AND IS SUBJECT TO CHANGE ****** -*/ -int sqlite3_get_autocommit(sqlite3 *db){ - return db->autoCommit; -} - -/* -** The following routines are subtitutes for constants SQLITE_CORRUPT, -** SQLITE_MISUSE, SQLITE_CANTOPEN, SQLITE_IOERR and possibly other error -** constants. They server two purposes: -** -** 1. Serve as a convenient place to set a breakpoint in a debugger -** to detect when version error conditions occurs. -** -** 2. Invoke sqlite3_log() to provide the source code location where -** a low-level error is first detected. -*/ -int sqlite3CorruptError(int lineno){ - testcase( sqlite3GlobalConfig.xLog!=0 ); - sqlite3_log(SQLITE_CORRUPT, - "database corruption at line %d of [%.10s]", - lineno, 20+sqlite3_sourceid()); - return SQLITE_CORRUPT; -} -int sqlite3MisuseError(int lineno){ - testcase( sqlite3GlobalConfig.xLog!=0 ); - sqlite3_log(SQLITE_MISUSE, - "misuse at line %d of [%.10s]", - lineno, 20+sqlite3_sourceid()); - return SQLITE_MISUSE; -} -int sqlite3CantopenError(int lineno){ - testcase( sqlite3GlobalConfig.xLog!=0 ); - sqlite3_log(SQLITE_CANTOPEN, - "cannot open file at line %d of [%.10s]", - lineno, 20+sqlite3_sourceid()); - return SQLITE_CANTOPEN; -} - - -#ifndef SQLITE_OMIT_DEPRECATED -/* -** This is a convenience routine that makes sure that all thread-specific -** data for this thread has been deallocated. -** -** SQLite no longer uses thread-specific data so this routine is now a -** no-op. It is retained for historical compatibility. -*/ -void sqlite3_thread_cleanup(void){ -} -#endif - -/* -** Return meta information about a specific column of a database table. -** See comment in sqlite3.h (sqlite.h.in) for details. -*/ -#ifdef SQLITE_ENABLE_COLUMN_METADATA -int sqlite3_table_column_metadata( - sqlite3 *db, /* Connection handle */ - const char *zDbName, /* Database name or NULL */ - const char *zTableName, /* Table name */ - const char *zColumnName, /* Column name */ - char const **pzDataType, /* OUTPUT: Declared data type */ - char const **pzCollSeq, /* OUTPUT: Collation sequence name */ - int *pNotNull, /* OUTPUT: True if NOT NULL constraint exists */ - int *pPrimaryKey, /* OUTPUT: True if column part of PK */ - int *pAutoinc /* OUTPUT: True if column is auto-increment */ -){ - int rc; - char *zErrMsg = 0; - Table *pTab = 0; - Column *pCol = 0; - int iCol; - - char const *zDataType = 0; - char const *zCollSeq = 0; - int notnull = 0; - int primarykey = 0; - int autoinc = 0; - - /* Ensure the database schema has been loaded */ - sqlite3_mutex_enter(db->mutex); - sqlite3BtreeEnterAll(db); - rc = sqlite3Init(db, &zErrMsg); - if( SQLITE_OK!=rc ){ - goto error_out; - } - - /* Locate the table in question */ - pTab = sqlite3FindTable(db, zTableName, zDbName); - if( !pTab || pTab->pSelect ){ - pTab = 0; - goto error_out; - } - - /* Find the column for which info is requested */ - if( sqlite3IsRowid(zColumnName) ){ - iCol = pTab->iPKey; - if( iCol>=0 ){ - pCol = &pTab->aCol[iCol]; - } - }else{ - for(iCol=0; iColnCol; iCol++){ - pCol = &pTab->aCol[iCol]; - if( 0==sqlite3StrICmp(pCol->zName, zColumnName) ){ - break; - } - } - if( iCol==pTab->nCol ){ - pTab = 0; - goto error_out; - } - } - - /* The following block stores the meta information that will be returned - ** to the caller in local variables zDataType, zCollSeq, notnull, primarykey - ** and autoinc. At this point there are two possibilities: - ** - ** 1. The specified column name was rowid", "oid" or "_rowid_" - ** and there is no explicitly declared IPK column. - ** - ** 2. The table is not a view and the column name identified an - ** explicitly declared column. Copy meta information from *pCol. - */ - if( pCol ){ - zDataType = pCol->zType; - zCollSeq = pCol->zColl; - notnull = pCol->notNull!=0; - primarykey = pCol->isPrimKey!=0; - autoinc = pTab->iPKey==iCol && (pTab->tabFlags & TF_Autoincrement)!=0; - }else{ - zDataType = "INTEGER"; - primarykey = 1; - } - if( !zCollSeq ){ - zCollSeq = "BINARY"; - } - -error_out: - sqlite3BtreeLeaveAll(db); - - /* Whether the function call succeeded or failed, set the output parameters - ** to whatever their local counterparts contain. If an error did occur, - ** this has the effect of zeroing all output parameters. - */ - if( pzDataType ) *pzDataType = zDataType; - if( pzCollSeq ) *pzCollSeq = zCollSeq; - if( pNotNull ) *pNotNull = notnull; - if( pPrimaryKey ) *pPrimaryKey = primarykey; - if( pAutoinc ) *pAutoinc = autoinc; - - if( SQLITE_OK==rc && !pTab ){ - sqlite3DbFree(db, zErrMsg); - zErrMsg = sqlite3MPrintf(db, "no such table column: %s.%s", zTableName, - zColumnName); - rc = SQLITE_ERROR; - } - sqlite3Error(db, rc, (zErrMsg?"%s":0), zErrMsg); - sqlite3DbFree(db, zErrMsg); - rc = sqlite3ApiExit(db, rc); - sqlite3_mutex_leave(db->mutex); - return rc; -} -#endif - -/* -** Sleep for a little while. Return the amount of time slept. -*/ -int sqlite3_sleep(int ms){ - sqlite3_vfs *pVfs; - int rc; - pVfs = sqlite3_vfs_find(0); - if( pVfs==0 ) return 0; - - /* This function works in milliseconds, but the underlying OsSleep() - ** API uses microseconds. Hence the 1000's. - */ - rc = (sqlite3OsSleep(pVfs, 1000*ms)/1000); - return rc; -} - -/* -** Enable or disable the extended result codes. -*/ -int sqlite3_extended_result_codes(sqlite3 *db, int onoff){ - sqlite3_mutex_enter(db->mutex); - db->errMask = onoff ? 0xffffffff : 0xff; - sqlite3_mutex_leave(db->mutex); - return SQLITE_OK; -} - -/* -** Invoke the xFileControl method on a particular database. -*/ -int sqlite3_file_control(sqlite3 *db, const char *zDbName, int op, void *pArg){ - int rc = SQLITE_ERROR; - int iDb; - sqlite3_mutex_enter(db->mutex); - if( zDbName==0 ){ - iDb = 0; - }else{ - for(iDb=0; iDbnDb; iDb++){ - if( strcmp(db->aDb[iDb].zName, zDbName)==0 ) break; - } - } - if( iDbnDb ){ - Btree *pBtree = db->aDb[iDb].pBt; - if( pBtree ){ - Pager *pPager; - sqlite3_file *fd; - sqlite3BtreeEnter(pBtree); - pPager = sqlite3BtreePager(pBtree); - assert( pPager!=0 ); - fd = sqlite3PagerFile(pPager); - assert( fd!=0 ); - if( op==SQLITE_FCNTL_FILE_POINTER ){ - *(sqlite3_file**)pArg = fd; - rc = SQLITE_OK; - }else if( fd->pMethods ){ - rc = sqlite3OsFileControl(fd, op, pArg); - }else{ - rc = SQLITE_NOTFOUND; - } - sqlite3BtreeLeave(pBtree); - } - } - sqlite3_mutex_leave(db->mutex); - return rc; -} - -/* -** Interface to the testing logic. -*/ -int sqlite3_test_control(int op, ...){ - int rc = 0; -#ifndef SQLITE_OMIT_BUILTIN_TEST - va_list ap; - va_start(ap, op); - switch( op ){ - - /* - ** Save the current state of the PRNG. - */ - case SQLITE_TESTCTRL_PRNG_SAVE: { - sqlite3PrngSaveState(); - break; - } - - /* - ** Restore the state of the PRNG to the last state saved using - ** PRNG_SAVE. If PRNG_SAVE has never before been called, then - ** this verb acts like PRNG_RESET. - */ - case SQLITE_TESTCTRL_PRNG_RESTORE: { - sqlite3PrngRestoreState(); - break; - } - - /* - ** Reset the PRNG back to its uninitialized state. The next call - ** to sqlite3_randomness() will reseed the PRNG using a single call - ** to the xRandomness method of the default VFS. - */ - case SQLITE_TESTCTRL_PRNG_RESET: { - sqlite3PrngResetState(); - break; - } - - /* - ** sqlite3_test_control(BITVEC_TEST, size, program) - ** - ** Run a test against a Bitvec object of size. The program argument - ** is an array of integers that defines the test. Return -1 on a - ** memory allocation error, 0 on success, or non-zero for an error. - ** See the sqlite3BitvecBuiltinTest() for additional information. - */ - case SQLITE_TESTCTRL_BITVEC_TEST: { - int sz = va_arg(ap, int); - int *aProg = va_arg(ap, int*); - rc = sqlite3BitvecBuiltinTest(sz, aProg); - break; - } - - /* - ** sqlite3_test_control(BENIGN_MALLOC_HOOKS, xBegin, xEnd) - ** - ** Register hooks to call to indicate which malloc() failures - ** are benign. - */ - case SQLITE_TESTCTRL_BENIGN_MALLOC_HOOKS: { - typedef void (*void_function)(void); - void_function xBenignBegin; - void_function xBenignEnd; - xBenignBegin = va_arg(ap, void_function); - xBenignEnd = va_arg(ap, void_function); - sqlite3BenignMallocHooks(xBenignBegin, xBenignEnd); - break; - } - - /* - ** sqlite3_test_control(SQLITE_TESTCTRL_PENDING_BYTE, unsigned int X) - ** - ** Set the PENDING byte to the value in the argument, if X>0. - ** Make no changes if X==0. Return the value of the pending byte - ** as it existing before this routine was called. - ** - ** IMPORTANT: Changing the PENDING byte from 0x40000000 results in - ** an incompatible database file format. Changing the PENDING byte - ** while any database connection is open results in undefined and - ** dileterious behavior. - */ - case SQLITE_TESTCTRL_PENDING_BYTE: { - rc = PENDING_BYTE; -#ifndef SQLITE_OMIT_WSD - { - unsigned int newVal = va_arg(ap, unsigned int); - if( newVal ) sqlite3PendingByte = newVal; - } -#endif - break; - } - - /* - ** sqlite3_test_control(SQLITE_TESTCTRL_ASSERT, int X) - ** - ** This action provides a run-time test to see whether or not - ** assert() was enabled at compile-time. If X is true and assert() - ** is enabled, then the return value is true. If X is true and - ** assert() is disabled, then the return value is zero. If X is - ** false and assert() is enabled, then the assertion fires and the - ** process aborts. If X is false and assert() is disabled, then the - ** return value is zero. - */ - case SQLITE_TESTCTRL_ASSERT: { - volatile int x = 0; - assert( (x = va_arg(ap,int))!=0 ); - rc = x; - break; - } - - - /* - ** sqlite3_test_control(SQLITE_TESTCTRL_ALWAYS, int X) - ** - ** This action provides a run-time test to see how the ALWAYS and - ** NEVER macros were defined at compile-time. - ** - ** The return value is ALWAYS(X). - ** - ** The recommended test is X==2. If the return value is 2, that means - ** ALWAYS() and NEVER() are both no-op pass-through macros, which is the - ** default setting. If the return value is 1, then ALWAYS() is either - ** hard-coded to true or else it asserts if its argument is false. - ** The first behavior (hard-coded to true) is the case if - ** SQLITE_TESTCTRL_ASSERT shows that assert() is disabled and the second - ** behavior (assert if the argument to ALWAYS() is false) is the case if - ** SQLITE_TESTCTRL_ASSERT shows that assert() is enabled. - ** - ** The run-time test procedure might look something like this: - ** - ** if( sqlite3_test_control(SQLITE_TESTCTRL_ALWAYS, 2)==2 ){ - ** // ALWAYS() and NEVER() are no-op pass-through macros - ** }else if( sqlite3_test_control(SQLITE_TESTCTRL_ASSERT, 1) ){ - ** // ALWAYS(x) asserts that x is true. NEVER(x) asserts x is false. - ** }else{ - ** // ALWAYS(x) is a constant 1. NEVER(x) is a constant 0. - ** } - */ - case SQLITE_TESTCTRL_ALWAYS: { - int x = va_arg(ap,int); - rc = ALWAYS(x); - break; - } - - /* sqlite3_test_control(SQLITE_TESTCTRL_RESERVE, sqlite3 *db, int N) - ** - ** Set the nReserve size to N for the main database on the database - ** connection db. - */ - case SQLITE_TESTCTRL_RESERVE: { - sqlite3 *db = va_arg(ap, sqlite3*); - int x = va_arg(ap,int); - sqlite3_mutex_enter(db->mutex); - sqlite3BtreeSetPageSize(db->aDb[0].pBt, 0, x, 0); - sqlite3_mutex_leave(db->mutex); - break; - } - - /* sqlite3_test_control(SQLITE_TESTCTRL_OPTIMIZATIONS, sqlite3 *db, int N) - ** - ** Enable or disable various optimizations for testing purposes. The - ** argument N is a bitmask of optimizations to be disabled. For normal - ** operation N should be 0. The idea is that a test program (like the - ** SQL Logic Test or SLT test module) can run the same SQL multiple times - ** with various optimizations disabled to verify that the same answer - ** is obtained in every case. - */ - case SQLITE_TESTCTRL_OPTIMIZATIONS: { - sqlite3 *db = va_arg(ap, sqlite3*); - int x = va_arg(ap,int); - db->flags = (x & SQLITE_OptMask) | (db->flags & ~SQLITE_OptMask); - break; - } - -#ifdef SQLITE_N_KEYWORD - /* sqlite3_test_control(SQLITE_TESTCTRL_ISKEYWORD, const char *zWord) - ** - ** If zWord is a keyword recognized by the parser, then return the - ** number of keywords. Or if zWord is not a keyword, return 0. - ** - ** This test feature is only available in the amalgamation since - ** the SQLITE_N_KEYWORD macro is not defined in this file if SQLite - ** is built using separate source files. - */ - case SQLITE_TESTCTRL_ISKEYWORD: { - const char *zWord = va_arg(ap, const char*); - int n = sqlite3Strlen30(zWord); - rc = (sqlite3KeywordCode((u8*)zWord, n)!=TK_ID) ? SQLITE_N_KEYWORD : 0; - break; - } -#endif - - /* sqlite3_test_control(SQLITE_TESTCTRL_PGHDRSZ) - ** - ** Return the size of a pcache header in bytes. - */ - case SQLITE_TESTCTRL_PGHDRSZ: { - rc = sizeof(PgHdr); - break; - } - - /* sqlite3_test_control(SQLITE_TESTCTRL_SCRATCHMALLOC, sz, &pNew, pFree); - ** - ** Pass pFree into sqlite3ScratchFree(). - ** If sz>0 then allocate a scratch buffer into pNew. - */ - case SQLITE_TESTCTRL_SCRATCHMALLOC: { - void *pFree, **ppNew; - int sz; - sz = va_arg(ap, int); - ppNew = va_arg(ap, void**); - pFree = va_arg(ap, void*); - if( sz ) *ppNew = sqlite3ScratchMalloc(sz); - sqlite3ScratchFree(pFree); - break; - } - - /* sqlite3_test_control(SQLITE_TESTCTRL_LOCALTIME_FAULT, int onoff); - ** - ** If parameter onoff is non-zero, configure the wrappers so that all - ** subsequent calls to localtime() and variants fail. If onoff is zero, - ** undo this setting. - */ - case SQLITE_TESTCTRL_LOCALTIME_FAULT: { - sqlite3GlobalConfig.bLocaltimeFault = va_arg(ap, int); - break; - } - - } - va_end(ap); -#endif /* SQLITE_OMIT_BUILTIN_TEST */ - return rc; -} - -/* -** This is a utility routine, useful to VFS implementations, that checks -** to see if a database file was a URI that contained a specific query -** parameter, and if so obtains the value of the query parameter. -** -** The zFilename argument is the filename pointer passed into the xOpen() -** method of a VFS implementation. The zParam argument is the name of the -** query parameter we seek. This routine returns the value of the zParam -** parameter if it exists. If the parameter does not exist, this routine -** returns a NULL pointer. -*/ -const char *sqlite3_uri_parameter(const char *zFilename, const char *zParam){ - zFilename += sqlite3Strlen30(zFilename) + 1; - while( zFilename[0] ){ - int x = strcmp(zFilename, zParam); - zFilename += sqlite3Strlen30(zFilename) + 1; - if( x==0 ) return zFilename; - zFilename += sqlite3Strlen30(zFilename) + 1; - } - return 0; -} diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/malloc.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/malloc.c deleted file mode 100644 index ca05250466..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/malloc.c +++ /dev/null @@ -1,777 +0,0 @@ -/* -** 2001 September 15 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** -** Memory allocation functions used throughout sqlite. -*/ -#include "sqliteInt.h" -#include - -/* -** Attempt to release up to n bytes of non-essential memory currently -** held by SQLite. An example of non-essential memory is memory used to -** cache database pages that are not currently in use. -*/ -int sqlite3_release_memory(int n){ -#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT - return sqlite3PcacheReleaseMemory(n); -#else - /* IMPLEMENTATION-OF: R-34391-24921 The sqlite3_release_memory() routine - ** is a no-op returning zero if SQLite is not compiled with - ** SQLITE_ENABLE_MEMORY_MANAGEMENT. */ - UNUSED_PARAMETER(n); - return 0; -#endif -} - -/* -** An instance of the following object records the location of -** each unused scratch buffer. -*/ -typedef struct ScratchFreeslot { - struct ScratchFreeslot *pNext; /* Next unused scratch buffer */ -} ScratchFreeslot; - -/* -** State information local to the memory allocation subsystem. -*/ -static SQLITE_WSD struct Mem0Global { - sqlite3_mutex *mutex; /* Mutex to serialize access */ - - /* - ** The alarm callback and its arguments. The mem0.mutex lock will - ** be held while the callback is running. Recursive calls into - ** the memory subsystem are allowed, but no new callbacks will be - ** issued. - */ - sqlite3_int64 alarmThreshold; - void (*alarmCallback)(void*, sqlite3_int64,int); - void *alarmArg; - - /* - ** Pointers to the end of sqlite3GlobalConfig.pScratch memory - ** (so that a range test can be used to determine if an allocation - ** being freed came from pScratch) and a pointer to the list of - ** unused scratch allocations. - */ - void *pScratchEnd; - ScratchFreeslot *pScratchFree; - u32 nScratchFree; - - /* - ** True if heap is nearly "full" where "full" is defined by the - ** sqlite3_soft_heap_limit() setting. - */ - int nearlyFull; -} mem0 = { 0, 0, 0, 0, 0, 0, 0, 0 }; - -#define mem0 GLOBAL(struct Mem0Global, mem0) - -/* -** This routine runs when the memory allocator sees that the -** total memory allocation is about to exceed the soft heap -** limit. -*/ -static void softHeapLimitEnforcer( - void *NotUsed, - sqlite3_int64 NotUsed2, - int allocSize -){ - UNUSED_PARAMETER2(NotUsed, NotUsed2); - sqlite3_release_memory(allocSize); -} - -/* -** Change the alarm callback -*/ -static int sqlite3MemoryAlarm( - void(*xCallback)(void *pArg, sqlite3_int64 used,int N), - void *pArg, - sqlite3_int64 iThreshold -){ - int nUsed; - sqlite3_mutex_enter(mem0.mutex); - mem0.alarmCallback = xCallback; - mem0.alarmArg = pArg; - mem0.alarmThreshold = iThreshold; - nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED); - mem0.nearlyFull = (iThreshold>0 && iThreshold<=nUsed); - sqlite3_mutex_leave(mem0.mutex); - return SQLITE_OK; -} - -#ifndef SQLITE_OMIT_DEPRECATED -/* -** Deprecated external interface. Internal/core SQLite code -** should call sqlite3MemoryAlarm. -*/ -int sqlite3_memory_alarm( - void(*xCallback)(void *pArg, sqlite3_int64 used,int N), - void *pArg, - sqlite3_int64 iThreshold -){ - return sqlite3MemoryAlarm(xCallback, pArg, iThreshold); -} -#endif - -/* -** Set the soft heap-size limit for the library. Passing a zero or -** negative value indicates no limit. -*/ -sqlite3_int64 sqlite3_soft_heap_limit64(sqlite3_int64 n){ - sqlite3_int64 priorLimit; - sqlite3_int64 excess; -#ifndef SQLITE_OMIT_AUTOINIT - sqlite3_initialize(); -#endif - sqlite3_mutex_enter(mem0.mutex); - priorLimit = mem0.alarmThreshold; - sqlite3_mutex_leave(mem0.mutex); - if( n<0 ) return priorLimit; - if( n>0 ){ - sqlite3MemoryAlarm(softHeapLimitEnforcer, 0, n); - }else{ - sqlite3MemoryAlarm(0, 0, 0); - } - excess = sqlite3_memory_used() - n; - if( excess>0 ) sqlite3_release_memory((int)(excess & 0x7fffffff)); - return priorLimit; -} -void sqlite3_soft_heap_limit(int n){ - if( n<0 ) n = 0; - sqlite3_soft_heap_limit64(n); -} - -/* -** Initialize the memory allocation subsystem. -*/ -int sqlite3MallocInit(void){ - if( sqlite3GlobalConfig.m.xMalloc==0 ){ - sqlite3MemSetDefault(); - } - memset(&mem0, 0, sizeof(mem0)); - if( sqlite3GlobalConfig.bCoreMutex ){ - mem0.mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MEM); - } - if( sqlite3GlobalConfig.pScratch && sqlite3GlobalConfig.szScratch>=100 - && sqlite3GlobalConfig.nScratch>0 ){ - int i, n, sz; - ScratchFreeslot *pSlot; - sz = ROUNDDOWN8(sqlite3GlobalConfig.szScratch); - sqlite3GlobalConfig.szScratch = sz; - pSlot = (ScratchFreeslot*)sqlite3GlobalConfig.pScratch; - n = sqlite3GlobalConfig.nScratch; - mem0.pScratchFree = pSlot; - mem0.nScratchFree = n; - for(i=0; ipNext = (ScratchFreeslot*)(sz+(char*)pSlot); - pSlot = pSlot->pNext; - } - pSlot->pNext = 0; - mem0.pScratchEnd = (void*)&pSlot[1]; - }else{ - mem0.pScratchEnd = 0; - sqlite3GlobalConfig.pScratch = 0; - sqlite3GlobalConfig.szScratch = 0; - sqlite3GlobalConfig.nScratch = 0; - } - if( sqlite3GlobalConfig.pPage==0 || sqlite3GlobalConfig.szPage<512 - || sqlite3GlobalConfig.nPage<1 ){ - sqlite3GlobalConfig.pPage = 0; - sqlite3GlobalConfig.szPage = 0; - sqlite3GlobalConfig.nPage = 0; - } - return sqlite3GlobalConfig.m.xInit(sqlite3GlobalConfig.m.pAppData); -} - -/* -** Return true if the heap is currently under memory pressure - in other -** words if the amount of heap used is close to the limit set by -** sqlite3_soft_heap_limit(). -*/ -int sqlite3HeapNearlyFull(void){ - return mem0.nearlyFull; -} - -/* -** Deinitialize the memory allocation subsystem. -*/ -void sqlite3MallocEnd(void){ - if( sqlite3GlobalConfig.m.xShutdown ){ - sqlite3GlobalConfig.m.xShutdown(sqlite3GlobalConfig.m.pAppData); - } - memset(&mem0, 0, sizeof(mem0)); -} - -/* -** Return the amount of memory currently checked out. -*/ -sqlite3_int64 sqlite3_memory_used(void){ - int n, mx; - sqlite3_int64 res; - sqlite3_status(SQLITE_STATUS_MEMORY_USED, &n, &mx, 0); - res = (sqlite3_int64)n; /* Work around bug in Borland C. Ticket #3216 */ - return res; -} - -/* -** Return the maximum amount of memory that has ever been -** checked out since either the beginning of this process -** or since the most recent reset. -*/ -sqlite3_int64 sqlite3_memory_highwater(int resetFlag){ - int n, mx; - sqlite3_int64 res; - sqlite3_status(SQLITE_STATUS_MEMORY_USED, &n, &mx, resetFlag); - res = (sqlite3_int64)mx; /* Work around bug in Borland C. Ticket #3216 */ - return res; -} - -/* -** Trigger the alarm -*/ -static void sqlite3MallocAlarm(int nByte){ - void (*xCallback)(void*,sqlite3_int64,int); - sqlite3_int64 nowUsed; - void *pArg; - if( mem0.alarmCallback==0 ) return; - xCallback = mem0.alarmCallback; - nowUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED); - pArg = mem0.alarmArg; - mem0.alarmCallback = 0; - sqlite3_mutex_leave(mem0.mutex); - xCallback(pArg, nowUsed, nByte); - sqlite3_mutex_enter(mem0.mutex); - mem0.alarmCallback = xCallback; - mem0.alarmArg = pArg; -} - -/* -** Do a memory allocation with statistics and alarms. Assume the -** lock is already held. -*/ -static int mallocWithAlarm(int n, void **pp){ - int nFull; - void *p; - assert( sqlite3_mutex_held(mem0.mutex) ); - nFull = sqlite3GlobalConfig.m.xRoundup(n); - sqlite3StatusSet(SQLITE_STATUS_MALLOC_SIZE, n); - if( mem0.alarmCallback!=0 ){ - int nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED); - if( nUsed >= mem0.alarmThreshold - nFull ){ - mem0.nearlyFull = 1; - sqlite3MallocAlarm(nFull); - }else{ - mem0.nearlyFull = 0; - } - } - p = sqlite3GlobalConfig.m.xMalloc(nFull); -#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT - if( p==0 && mem0.alarmCallback ){ - sqlite3MallocAlarm(nFull); - p = sqlite3GlobalConfig.m.xMalloc(nFull); - } -#endif - if( p ){ - nFull = sqlite3MallocSize(p); - sqlite3StatusAdd(SQLITE_STATUS_MEMORY_USED, nFull); - sqlite3StatusAdd(SQLITE_STATUS_MALLOC_COUNT, 1); - } - *pp = p; - return nFull; -} - -/* -** Allocate memory. This routine is like sqlite3_malloc() except that it -** assumes the memory subsystem has already been initialized. -*/ -void *sqlite3Malloc(int n){ - void *p; - if( n<=0 /* IMP: R-65312-04917 */ - || n>=0x7fffff00 - ){ - /* A memory allocation of a number of bytes which is near the maximum - ** signed integer value might cause an integer overflow inside of the - ** xMalloc(). Hence we limit the maximum size to 0x7fffff00, giving - ** 255 bytes of overhead. SQLite itself will never use anything near - ** this amount. The only way to reach the limit is with sqlite3_malloc() */ - p = 0; - }else if( sqlite3GlobalConfig.bMemstat ){ - sqlite3_mutex_enter(mem0.mutex); - mallocWithAlarm(n, &p); - sqlite3_mutex_leave(mem0.mutex); - }else{ - p = sqlite3GlobalConfig.m.xMalloc(n); - } - assert( EIGHT_BYTE_ALIGNMENT(p) ); /* IMP: R-04675-44850 */ - return p; -} - -/* -** This version of the memory allocation is for use by the application. -** First make sure the memory subsystem is initialized, then do the -** allocation. -*/ -void *sqlite3_malloc(int n){ -#ifndef SQLITE_OMIT_AUTOINIT - if( sqlite3_initialize() ) return 0; -#endif - return sqlite3Malloc(n); -} - -/* -** Each thread may only have a single outstanding allocation from -** xScratchMalloc(). We verify this constraint in the single-threaded -** case by setting scratchAllocOut to 1 when an allocation -** is outstanding clearing it when the allocation is freed. -*/ -#if SQLITE_THREADSAFE==0 && !defined(NDEBUG) -static int scratchAllocOut = 0; -#endif - - -/* -** Allocate memory that is to be used and released right away. -** This routine is similar to alloca() in that it is not intended -** for situations where the memory might be held long-term. This -** routine is intended to get memory to old large transient data -** structures that would not normally fit on the stack of an -** embedded processor. -*/ -void *sqlite3ScratchMalloc(int n){ - void *p; - assert( n>0 ); - - sqlite3_mutex_enter(mem0.mutex); - if( mem0.nScratchFree && sqlite3GlobalConfig.szScratch>=n ){ - p = mem0.pScratchFree; - mem0.pScratchFree = mem0.pScratchFree->pNext; - mem0.nScratchFree--; - sqlite3StatusAdd(SQLITE_STATUS_SCRATCH_USED, 1); - sqlite3StatusSet(SQLITE_STATUS_SCRATCH_SIZE, n); - sqlite3_mutex_leave(mem0.mutex); - }else{ - if( sqlite3GlobalConfig.bMemstat ){ - sqlite3StatusSet(SQLITE_STATUS_SCRATCH_SIZE, n); - n = mallocWithAlarm(n, &p); - if( p ) sqlite3StatusAdd(SQLITE_STATUS_SCRATCH_OVERFLOW, n); - sqlite3_mutex_leave(mem0.mutex); - }else{ - sqlite3_mutex_leave(mem0.mutex); - p = sqlite3GlobalConfig.m.xMalloc(n); - } - sqlite3MemdebugSetType(p, MEMTYPE_SCRATCH); - } - assert( sqlite3_mutex_notheld(mem0.mutex) ); - - -#if SQLITE_THREADSAFE==0 && !defined(NDEBUG) - /* Verify that no more than two scratch allocations per thread - ** are outstanding at one time. (This is only checked in the - ** single-threaded case since checking in the multi-threaded case - ** would be much more complicated.) */ - assert( scratchAllocOut<=1 ); - if( p ) scratchAllocOut++; -#endif - - return p; -} -void sqlite3ScratchFree(void *p){ - if( p ){ - -#if SQLITE_THREADSAFE==0 && !defined(NDEBUG) - /* Verify that no more than two scratch allocation per thread - ** is outstanding at one time. (This is only checked in the - ** single-threaded case since checking in the multi-threaded case - ** would be much more complicated.) */ - assert( scratchAllocOut>=1 && scratchAllocOut<=2 ); - scratchAllocOut--; -#endif - - if( p>=sqlite3GlobalConfig.pScratch && ppNext = mem0.pScratchFree; - mem0.pScratchFree = pSlot; - mem0.nScratchFree++; - assert( mem0.nScratchFree <= (u32)sqlite3GlobalConfig.nScratch ); - sqlite3StatusAdd(SQLITE_STATUS_SCRATCH_USED, -1); - sqlite3_mutex_leave(mem0.mutex); - }else{ - /* Release memory back to the heap */ - assert( sqlite3MemdebugHasType(p, MEMTYPE_SCRATCH) ); - assert( sqlite3MemdebugNoType(p, ~MEMTYPE_SCRATCH) ); - sqlite3MemdebugSetType(p, MEMTYPE_HEAP); - if( sqlite3GlobalConfig.bMemstat ){ - int iSize = sqlite3MallocSize(p); - sqlite3_mutex_enter(mem0.mutex); - sqlite3StatusAdd(SQLITE_STATUS_SCRATCH_OVERFLOW, -iSize); - sqlite3StatusAdd(SQLITE_STATUS_MEMORY_USED, -iSize); - sqlite3StatusAdd(SQLITE_STATUS_MALLOC_COUNT, -1); - sqlite3GlobalConfig.m.xFree(p); - sqlite3_mutex_leave(mem0.mutex); - }else{ - sqlite3GlobalConfig.m.xFree(p); - } - } - } -} - -/* -** TRUE if p is a lookaside memory allocation from db -*/ -#ifndef SQLITE_OMIT_LOOKASIDE -static int isLookaside(sqlite3 *db, void *p){ - return p && p>=db->lookaside.pStart && plookaside.pEnd; -} -#else -#define isLookaside(A,B) 0 -#endif - -/* -** Return the size of a memory allocation previously obtained from -** sqlite3Malloc() or sqlite3_malloc(). -*/ -int sqlite3MallocSize(void *p){ - assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) ); - assert( sqlite3MemdebugNoType(p, MEMTYPE_DB) ); - return sqlite3GlobalConfig.m.xSize(p); -} -int sqlite3DbMallocSize(sqlite3 *db, void *p){ - assert( db==0 || sqlite3_mutex_held(db->mutex) ); - if( db && isLookaside(db, p) ){ - return db->lookaside.sz; - }else{ - assert( sqlite3MemdebugHasType(p, MEMTYPE_DB) ); - assert( sqlite3MemdebugHasType(p, MEMTYPE_LOOKASIDE|MEMTYPE_HEAP) ); - assert( db!=0 || sqlite3MemdebugNoType(p, MEMTYPE_LOOKASIDE) ); - return sqlite3GlobalConfig.m.xSize(p); - } -} - -/* -** Free memory previously obtained from sqlite3Malloc(). -*/ -void sqlite3_free(void *p){ - if( p==0 ) return; /* IMP: R-49053-54554 */ - assert( sqlite3MemdebugNoType(p, MEMTYPE_DB) ); - assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) ); - if( sqlite3GlobalConfig.bMemstat ){ - sqlite3_mutex_enter(mem0.mutex); - sqlite3StatusAdd(SQLITE_STATUS_MEMORY_USED, -sqlite3MallocSize(p)); - sqlite3StatusAdd(SQLITE_STATUS_MALLOC_COUNT, -1); - sqlite3GlobalConfig.m.xFree(p); - sqlite3_mutex_leave(mem0.mutex); - }else{ - sqlite3GlobalConfig.m.xFree(p); - } -} - -/* -** Free memory that might be associated with a particular database -** connection. -*/ -void sqlite3DbFree(sqlite3 *db, void *p){ - assert( db==0 || sqlite3_mutex_held(db->mutex) ); - if( db ){ - if( db->pnBytesFreed ){ - *db->pnBytesFreed += sqlite3DbMallocSize(db, p); - return; - } - if( isLookaside(db, p) ){ - LookasideSlot *pBuf = (LookasideSlot*)p; - pBuf->pNext = db->lookaside.pFree; - db->lookaside.pFree = pBuf; - db->lookaside.nOut--; - return; - } - } - assert( sqlite3MemdebugHasType(p, MEMTYPE_DB) ); - assert( sqlite3MemdebugHasType(p, MEMTYPE_LOOKASIDE|MEMTYPE_HEAP) ); - assert( db!=0 || sqlite3MemdebugNoType(p, MEMTYPE_LOOKASIDE) ); - sqlite3MemdebugSetType(p, MEMTYPE_HEAP); - sqlite3_free(p); -} - -/* -** Change the size of an existing memory allocation -*/ -void *sqlite3Realloc(void *pOld, int nBytes){ - int nOld, nNew, nDiff; - void *pNew; - if( pOld==0 ){ - return sqlite3Malloc(nBytes); /* IMP: R-28354-25769 */ - } - if( nBytes<=0 ){ - sqlite3_free(pOld); /* IMP: R-31593-10574 */ - return 0; - } - if( nBytes>=0x7fffff00 ){ - /* The 0x7ffff00 limit term is explained in comments on sqlite3Malloc() */ - return 0; - } - nOld = sqlite3MallocSize(pOld); - /* IMPLEMENTATION-OF: R-46199-30249 SQLite guarantees that the second - ** argument to xRealloc is always a value returned by a prior call to - ** xRoundup. */ - nNew = sqlite3GlobalConfig.m.xRoundup(nBytes); - if( nOld==nNew ){ - pNew = pOld; - }else if( sqlite3GlobalConfig.bMemstat ){ - sqlite3_mutex_enter(mem0.mutex); - sqlite3StatusSet(SQLITE_STATUS_MALLOC_SIZE, nBytes); - nDiff = nNew - nOld; - if( sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED) >= - mem0.alarmThreshold-nDiff ){ - sqlite3MallocAlarm(nDiff); - } - assert( sqlite3MemdebugHasType(pOld, MEMTYPE_HEAP) ); - assert( sqlite3MemdebugNoType(pOld, ~MEMTYPE_HEAP) ); - pNew = sqlite3GlobalConfig.m.xRealloc(pOld, nNew); - if( pNew==0 && mem0.alarmCallback ){ - sqlite3MallocAlarm(nBytes); - pNew = sqlite3GlobalConfig.m.xRealloc(pOld, nNew); - } - if( pNew ){ - nNew = sqlite3MallocSize(pNew); - sqlite3StatusAdd(SQLITE_STATUS_MEMORY_USED, nNew-nOld); - } - sqlite3_mutex_leave(mem0.mutex); - }else{ - pNew = sqlite3GlobalConfig.m.xRealloc(pOld, nNew); - } - assert( EIGHT_BYTE_ALIGNMENT(pNew) ); /* IMP: R-04675-44850 */ - return pNew; -} - -/* -** The public interface to sqlite3Realloc. Make sure that the memory -** subsystem is initialized prior to invoking sqliteRealloc. -*/ -void *sqlite3_realloc(void *pOld, int n){ -#ifndef SQLITE_OMIT_AUTOINIT - if( sqlite3_initialize() ) return 0; -#endif - return sqlite3Realloc(pOld, n); -} - - -/* -** Allocate and zero memory. -*/ -void *sqlite3MallocZero(int n){ - void *p = sqlite3Malloc(n); - if( p ){ - memset(p, 0, n); - } - return p; -} - -/* -** Allocate and zero memory. If the allocation fails, make -** the mallocFailed flag in the connection pointer. -*/ -void *sqlite3DbMallocZero(sqlite3 *db, int n){ - void *p = sqlite3DbMallocRaw(db, n); - if( p ){ - memset(p, 0, n); - } - return p; -} - -/* -** Allocate and zero memory. If the allocation fails, make -** the mallocFailed flag in the connection pointer. -** -** If db!=0 and db->mallocFailed is true (indicating a prior malloc -** failure on the same database connection) then always return 0. -** Hence for a particular database connection, once malloc starts -** failing, it fails consistently until mallocFailed is reset. -** This is an important assumption. There are many places in the -** code that do things like this: -** -** int *a = (int*)sqlite3DbMallocRaw(db, 100); -** int *b = (int*)sqlite3DbMallocRaw(db, 200); -** if( b ) a[10] = 9; -** -** In other words, if a subsequent malloc (ex: "b") worked, it is assumed -** that all prior mallocs (ex: "a") worked too. -*/ -void *sqlite3DbMallocRaw(sqlite3 *db, int n){ - void *p; - assert( db==0 || sqlite3_mutex_held(db->mutex) ); - assert( db==0 || db->pnBytesFreed==0 ); -#ifndef SQLITE_OMIT_LOOKASIDE - if( db ){ - LookasideSlot *pBuf; - if( db->mallocFailed ){ - return 0; - } - if( db->lookaside.bEnabled ){ - if( n>db->lookaside.sz ){ - db->lookaside.anStat[1]++; - }else if( (pBuf = db->lookaside.pFree)==0 ){ - db->lookaside.anStat[2]++; - }else{ - db->lookaside.pFree = pBuf->pNext; - db->lookaside.nOut++; - db->lookaside.anStat[0]++; - if( db->lookaside.nOut>db->lookaside.mxOut ){ - db->lookaside.mxOut = db->lookaside.nOut; - } - return (void*)pBuf; - } - } - } -#else - if( db && db->mallocFailed ){ - return 0; - } -#endif - p = sqlite3Malloc(n); - if( !p && db ){ - db->mallocFailed = 1; - } - sqlite3MemdebugSetType(p, MEMTYPE_DB | - ((db && db->lookaside.bEnabled) ? MEMTYPE_LOOKASIDE : MEMTYPE_HEAP)); - return p; -} - -/* -** Resize the block of memory pointed to by p to n bytes. If the -** resize fails, set the mallocFailed flag in the connection object. -*/ -void *sqlite3DbRealloc(sqlite3 *db, void *p, int n){ - void *pNew = 0; - assert( db!=0 ); - assert( sqlite3_mutex_held(db->mutex) ); - if( db->mallocFailed==0 ){ - if( p==0 ){ - return sqlite3DbMallocRaw(db, n); - } - if( isLookaside(db, p) ){ - if( n<=db->lookaside.sz ){ - return p; - } - pNew = sqlite3DbMallocRaw(db, n); - if( pNew ){ - memcpy(pNew, p, db->lookaside.sz); - sqlite3DbFree(db, p); - } - }else{ - assert( sqlite3MemdebugHasType(p, MEMTYPE_DB) ); - assert( sqlite3MemdebugHasType(p, MEMTYPE_LOOKASIDE|MEMTYPE_HEAP) ); - sqlite3MemdebugSetType(p, MEMTYPE_HEAP); - pNew = sqlite3_realloc(p, n); - if( !pNew ){ - sqlite3MemdebugSetType(p, MEMTYPE_DB|MEMTYPE_HEAP); - db->mallocFailed = 1; - } - sqlite3MemdebugSetType(pNew, MEMTYPE_DB | - (db->lookaside.bEnabled ? MEMTYPE_LOOKASIDE : MEMTYPE_HEAP)); - } - } - return pNew; -} - -/* -** Attempt to reallocate p. If the reallocation fails, then free p -** and set the mallocFailed flag in the database connection. -*/ -void *sqlite3DbReallocOrFree(sqlite3 *db, void *p, int n){ - void *pNew; - pNew = sqlite3DbRealloc(db, p, n); - if( !pNew ){ - sqlite3DbFree(db, p); - } - return pNew; -} - -/* -** Make a copy of a string in memory obtained from sqliteMalloc(). These -** functions call sqlite3MallocRaw() directly instead of sqliteMalloc(). This -** is because when memory debugging is turned on, these two functions are -** called via macros that record the current file and line number in the -** ThreadData structure. -*/ -char *sqlite3DbStrDup(sqlite3 *db, const char *z){ - char *zNew; - size_t n; - if( z==0 ){ - return 0; - } - n = sqlite3Strlen30(z) + 1; - assert( (n&0x7fffffff)==n ); - zNew = sqlite3DbMallocRaw(db, (int)n); - if( zNew ){ - memcpy(zNew, z, n); - } - return zNew; -} -char *sqlite3DbStrNDup(sqlite3 *db, const char *z, int n){ - char *zNew; - if( z==0 ){ - return 0; - } - assert( (n&0x7fffffff)==n ); - zNew = sqlite3DbMallocRaw(db, n+1); - if( zNew ){ - memcpy(zNew, z, n); - zNew[n] = 0; - } - return zNew; -} - -/* -** Create a string from the zFromat argument and the va_list that follows. -** Store the string in memory obtained from sqliteMalloc() and make *pz -** point to that string. -*/ -void sqlite3SetString(char **pz, sqlite3 *db, const char *zFormat, ...){ - va_list ap; - char *z; - - va_start(ap, zFormat); - z = sqlite3VMPrintf(db, zFormat, ap); - va_end(ap); - sqlite3DbFree(db, *pz); - *pz = z; -} - - -/* -** This function must be called before exiting any API function (i.e. -** returning control to the user) that has called sqlite3_malloc or -** sqlite3_realloc. -** -** The returned value is normally a copy of the second argument to this -** function. However, if a malloc() failure has occurred since the previous -** invocation SQLITE_NOMEM is returned instead. -** -** If the first argument, db, is not NULL and a malloc() error has occurred, -** then the connection error-code (the value returned by sqlite3_errcode()) -** is set to SQLITE_NOMEM. -*/ -int sqlite3ApiExit(sqlite3* db, int rc){ - /* If the db handle is not NULL, then we must hold the connection handle - ** mutex here. Otherwise the read (and possible write) of db->mallocFailed - ** is unsafe, as is the call to sqlite3Error(). - */ - assert( !db || sqlite3_mutex_held(db->mutex) ); - if( db && (db->mallocFailed || rc==SQLITE_IOERR_NOMEM) ){ - sqlite3Error(db, SQLITE_NOMEM, 0); - db->mallocFailed = 0; - rc = SQLITE_NOMEM; - } - return rc & (db ? db->errMask : 0xff); -} diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mem0.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mem0.c deleted file mode 100644 index 80d6d2dc16..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mem0.c +++ /dev/null @@ -1,59 +0,0 @@ -/* -** 2008 October 28 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** -** This file contains a no-op memory allocation drivers for use when -** SQLITE_ZERO_MALLOC is defined. The allocation drivers implemented -** here always fail. SQLite will not operate with these drivers. These -** are merely placeholders. Real drivers must be substituted using -** sqlite3_config() before SQLite will operate. -*/ -#include "sqliteInt.h" - -/* -** This version of the memory allocator is the default. It is -** used when no other memory allocator is specified using compile-time -** macros. -*/ -#ifdef SQLITE_ZERO_MALLOC - -/* -** No-op versions of all memory allocation routines -*/ -static void *sqlite3MemMalloc(int nByte){ return 0; } -static void sqlite3MemFree(void *pPrior){ return; } -static void *sqlite3MemRealloc(void *pPrior, int nByte){ return 0; } -static int sqlite3MemSize(void *pPrior){ return 0; } -static int sqlite3MemRoundup(int n){ return n; } -static int sqlite3MemInit(void *NotUsed){ return SQLITE_OK; } -static void sqlite3MemShutdown(void *NotUsed){ return; } - -/* -** This routine is the only routine in this file with external linkage. -** -** Populate the low-level memory allocation function pointers in -** sqlite3GlobalConfig.m with pointers to the routines in this file. -*/ -void sqlite3MemSetDefault(void){ - static const sqlite3_mem_methods defaultMethods = { - sqlite3MemMalloc, - sqlite3MemFree, - sqlite3MemRealloc, - sqlite3MemSize, - sqlite3MemRoundup, - sqlite3MemInit, - sqlite3MemShutdown, - 0 - }; - sqlite3_config(SQLITE_CONFIG_MALLOC, &defaultMethods); -} - -#endif /* SQLITE_ZERO_MALLOC */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mem1.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mem1.c deleted file mode 100644 index a3225bd9d7..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mem1.c +++ /dev/null @@ -1,150 +0,0 @@ -/* -** 2007 August 14 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** -** This file contains low-level memory allocation drivers for when -** SQLite will use the standard C-library malloc/realloc/free interface -** to obtain the memory it needs. -** -** This file contains implementations of the low-level memory allocation -** routines specified in the sqlite3_mem_methods object. -*/ -#include "sqliteInt.h" - -/* -** This version of the memory allocator is the default. It is -** used when no other memory allocator is specified using compile-time -** macros. -*/ -#ifdef SQLITE_SYSTEM_MALLOC - -/* -** Like malloc(), but remember the size of the allocation -** so that we can find it later using sqlite3MemSize(). -** -** For this low-level routine, we are guaranteed that nByte>0 because -** cases of nByte<=0 will be intercepted and dealt with by higher level -** routines. -*/ -static void *sqlite3MemMalloc(int nByte){ - sqlite3_int64 *p; - assert( nByte>0 ); - nByte = ROUND8(nByte); - p = malloc( nByte+8 ); - if( p ){ - p[0] = nByte; - p++; - }else{ - testcase( sqlite3GlobalConfig.xLog!=0 ); - sqlite3_log(SQLITE_NOMEM, "failed to allocate %u bytes of memory", nByte); - } - return (void *)p; -} - -/* -** Like free() but works for allocations obtained from sqlite3MemMalloc() -** or sqlite3MemRealloc(). -** -** For this low-level routine, we already know that pPrior!=0 since -** cases where pPrior==0 will have been intecepted and dealt with -** by higher-level routines. -*/ -static void sqlite3MemFree(void *pPrior){ - sqlite3_int64 *p = (sqlite3_int64*)pPrior; - assert( pPrior!=0 ); - p--; - free(p); -} - -/* -** Report the allocated size of a prior return from xMalloc() -** or xRealloc(). -*/ -static int sqlite3MemSize(void *pPrior){ - sqlite3_int64 *p; - if( pPrior==0 ) return 0; - p = (sqlite3_int64*)pPrior; - p--; - return (int)p[0]; -} - -/* -** Like realloc(). Resize an allocation previously obtained from -** sqlite3MemMalloc(). -** -** For this low-level interface, we know that pPrior!=0. Cases where -** pPrior==0 while have been intercepted by higher-level routine and -** redirected to xMalloc. Similarly, we know that nByte>0 becauses -** cases where nByte<=0 will have been intercepted by higher-level -** routines and redirected to xFree. -*/ -static void *sqlite3MemRealloc(void *pPrior, int nByte){ - sqlite3_int64 *p = (sqlite3_int64*)pPrior; - assert( pPrior!=0 && nByte>0 ); - assert( nByte==ROUND8(nByte) ); /* EV: R-46199-30249 */ - p--; - p = realloc(p, nByte+8 ); - if( p ){ - p[0] = nByte; - p++; - }else{ - testcase( sqlite3GlobalConfig.xLog!=0 ); - sqlite3_log(SQLITE_NOMEM, - "failed memory resize %u to %u bytes", - sqlite3MemSize(pPrior), nByte); - } - return (void*)p; -} - -/* -** Round up a request size to the next valid allocation size. -*/ -static int sqlite3MemRoundup(int n){ - return ROUND8(n); -} - -/* -** Initialize this module. -*/ -static int sqlite3MemInit(void *NotUsed){ - UNUSED_PARAMETER(NotUsed); - return SQLITE_OK; -} - -/* -** Deinitialize this module. -*/ -static void sqlite3MemShutdown(void *NotUsed){ - UNUSED_PARAMETER(NotUsed); - return; -} - -/* -** This routine is the only routine in this file with external linkage. -** -** Populate the low-level memory allocation function pointers in -** sqlite3GlobalConfig.m with pointers to the routines in this file. -*/ -void sqlite3MemSetDefault(void){ - static const sqlite3_mem_methods defaultMethods = { - sqlite3MemMalloc, - sqlite3MemFree, - sqlite3MemRealloc, - sqlite3MemSize, - sqlite3MemRoundup, - sqlite3MemInit, - sqlite3MemShutdown, - 0 - }; - sqlite3_config(SQLITE_CONFIG_MALLOC, &defaultMethods); -} - -#endif /* SQLITE_SYSTEM_MALLOC */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mem2.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mem2.c deleted file mode 100644 index e356c72c9f..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mem2.c +++ /dev/null @@ -1,528 +0,0 @@ -/* -** 2007 August 15 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** -** This file contains low-level memory allocation drivers for when -** SQLite will use the standard C-library malloc/realloc/free interface -** to obtain the memory it needs while adding lots of additional debugging -** information to each allocation in order to help detect and fix memory -** leaks and memory usage errors. -** -** This file contains implementations of the low-level memory allocation -** routines specified in the sqlite3_mem_methods object. -*/ -#include "sqliteInt.h" - -/* -** This version of the memory allocator is used only if the -** SQLITE_MEMDEBUG macro is defined -*/ -#ifdef SQLITE_MEMDEBUG - -/* -** The backtrace functionality is only available with GLIBC -*/ -#ifdef __GLIBC__ - extern int backtrace(void**,int); - extern void backtrace_symbols_fd(void*const*,int,int); -#else -# define backtrace(A,B) 1 -# define backtrace_symbols_fd(A,B,C) -#endif -#include - -/* -** Each memory allocation looks like this: -** -** ------------------------------------------------------------------------ -** | Title | backtrace pointers | MemBlockHdr | allocation | EndGuard | -** ------------------------------------------------------------------------ -** -** The application code sees only a pointer to the allocation. We have -** to back up from the allocation pointer to find the MemBlockHdr. The -** MemBlockHdr tells us the size of the allocation and the number of -** backtrace pointers. There is also a guard word at the end of the -** MemBlockHdr. -*/ -struct MemBlockHdr { - i64 iSize; /* Size of this allocation */ - struct MemBlockHdr *pNext, *pPrev; /* Linked list of all unfreed memory */ - char nBacktrace; /* Number of backtraces on this alloc */ - char nBacktraceSlots; /* Available backtrace slots */ - u8 nTitle; /* Bytes of title; includes '\0' */ - u8 eType; /* Allocation type code */ - int iForeGuard; /* Guard word for sanity */ -}; - -/* -** Guard words -*/ -#define FOREGUARD 0x80F5E153 -#define REARGUARD 0xE4676B53 - -/* -** Number of malloc size increments to track. -*/ -#define NCSIZE 1000 - -/* -** All of the static variables used by this module are collected -** into a single structure named "mem". This is to keep the -** static variables organized and to reduce namespace pollution -** when this module is combined with other in the amalgamation. -*/ -static struct { - - /* - ** Mutex to control access to the memory allocation subsystem. - */ - sqlite3_mutex *mutex; - - /* - ** Head and tail of a linked list of all outstanding allocations - */ - struct MemBlockHdr *pFirst; - struct MemBlockHdr *pLast; - - /* - ** The number of levels of backtrace to save in new allocations. - */ - int nBacktrace; - void (*xBacktrace)(int, int, void **); - - /* - ** Title text to insert in front of each block - */ - int nTitle; /* Bytes of zTitle to save. Includes '\0' and padding */ - char zTitle[100]; /* The title text */ - - /* - ** sqlite3MallocDisallow() increments the following counter. - ** sqlite3MallocAllow() decrements it. - */ - int disallow; /* Do not allow memory allocation */ - - /* - ** Gather statistics on the sizes of memory allocations. - ** nAlloc[i] is the number of allocation attempts of i*8 - ** bytes. i==NCSIZE is the number of allocation attempts for - ** sizes more than NCSIZE*8 bytes. - */ - int nAlloc[NCSIZE]; /* Total number of allocations */ - int nCurrent[NCSIZE]; /* Current number of allocations */ - int mxCurrent[NCSIZE]; /* Highwater mark for nCurrent */ - -} mem; - - -/* -** Adjust memory usage statistics -*/ -static void adjustStats(int iSize, int increment){ - int i = ROUND8(iSize)/8; - if( i>NCSIZE-1 ){ - i = NCSIZE - 1; - } - if( increment>0 ){ - mem.nAlloc[i]++; - mem.nCurrent[i]++; - if( mem.nCurrent[i]>mem.mxCurrent[i] ){ - mem.mxCurrent[i] = mem.nCurrent[i]; - } - }else{ - mem.nCurrent[i]--; - assert( mem.nCurrent[i]>=0 ); - } -} - -/* -** Given an allocation, find the MemBlockHdr for that allocation. -** -** This routine checks the guards at either end of the allocation and -** if they are incorrect it asserts. -*/ -static struct MemBlockHdr *sqlite3MemsysGetHeader(void *pAllocation){ - struct MemBlockHdr *p; - int *pInt; - u8 *pU8; - int nReserve; - - p = (struct MemBlockHdr*)pAllocation; - p--; - assert( p->iForeGuard==(int)FOREGUARD ); - nReserve = ROUND8(p->iSize); - pInt = (int*)pAllocation; - pU8 = (u8*)pAllocation; - assert( pInt[nReserve/sizeof(int)]==(int)REARGUARD ); - /* This checks any of the "extra" bytes allocated due - ** to rounding up to an 8 byte boundary to ensure - ** they haven't been overwritten. - */ - while( nReserve-- > p->iSize ) assert( pU8[nReserve]==0x65 ); - return p; -} - -/* -** Return the number of bytes currently allocated at address p. -*/ -static int sqlite3MemSize(void *p){ - struct MemBlockHdr *pHdr; - if( !p ){ - return 0; - } - pHdr = sqlite3MemsysGetHeader(p); - return pHdr->iSize; -} - -/* -** Initialize the memory allocation subsystem. -*/ -static int sqlite3MemInit(void *NotUsed){ - UNUSED_PARAMETER(NotUsed); - assert( (sizeof(struct MemBlockHdr)&7) == 0 ); - if( !sqlite3GlobalConfig.bMemstat ){ - /* If memory status is enabled, then the malloc.c wrapper will already - ** hold the STATIC_MEM mutex when the routines here are invoked. */ - mem.mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MEM); - } - return SQLITE_OK; -} - -/* -** Deinitialize the memory allocation subsystem. -*/ -static void sqlite3MemShutdown(void *NotUsed){ - UNUSED_PARAMETER(NotUsed); - mem.mutex = 0; -} - -/* -** Round up a request size to the next valid allocation size. -*/ -static int sqlite3MemRoundup(int n){ - return ROUND8(n); -} - -/* -** Fill a buffer with pseudo-random bytes. This is used to preset -** the content of a new memory allocation to unpredictable values and -** to clear the content of a freed allocation to unpredictable values. -*/ -static void randomFill(char *pBuf, int nByte){ - unsigned int x, y, r; - x = SQLITE_PTR_TO_INT(pBuf); - y = nByte | 1; - while( nByte >= 4 ){ - x = (x>>1) ^ (-(x&1) & 0xd0000001); - y = y*1103515245 + 12345; - r = x ^ y; - *(int*)pBuf = r; - pBuf += 4; - nByte -= 4; - } - while( nByte-- > 0 ){ - x = (x>>1) ^ (-(x&1) & 0xd0000001); - y = y*1103515245 + 12345; - r = x ^ y; - *(pBuf++) = r & 0xff; - } -} - -/* -** Allocate nByte bytes of memory. -*/ -static void *sqlite3MemMalloc(int nByte){ - struct MemBlockHdr *pHdr; - void **pBt; - char *z; - int *pInt; - void *p = 0; - int totalSize; - int nReserve; - sqlite3_mutex_enter(mem.mutex); - assert( mem.disallow==0 ); - nReserve = ROUND8(nByte); - totalSize = nReserve + sizeof(*pHdr) + sizeof(int) + - mem.nBacktrace*sizeof(void*) + mem.nTitle; - p = malloc(totalSize); - if( p ){ - z = p; - pBt = (void**)&z[mem.nTitle]; - pHdr = (struct MemBlockHdr*)&pBt[mem.nBacktrace]; - pHdr->pNext = 0; - pHdr->pPrev = mem.pLast; - if( mem.pLast ){ - mem.pLast->pNext = pHdr; - }else{ - mem.pFirst = pHdr; - } - mem.pLast = pHdr; - pHdr->iForeGuard = FOREGUARD; - pHdr->eType = MEMTYPE_HEAP; - pHdr->nBacktraceSlots = mem.nBacktrace; - pHdr->nTitle = mem.nTitle; - if( mem.nBacktrace ){ - void *aAddr[40]; - pHdr->nBacktrace = backtrace(aAddr, mem.nBacktrace+1)-1; - memcpy(pBt, &aAddr[1], pHdr->nBacktrace*sizeof(void*)); - assert(pBt[0]); - if( mem.xBacktrace ){ - mem.xBacktrace(nByte, pHdr->nBacktrace-1, &aAddr[1]); - } - }else{ - pHdr->nBacktrace = 0; - } - if( mem.nTitle ){ - memcpy(z, mem.zTitle, mem.nTitle); - } - pHdr->iSize = nByte; - adjustStats(nByte, +1); - pInt = (int*)&pHdr[1]; - pInt[nReserve/sizeof(int)] = REARGUARD; - randomFill((char*)pInt, nByte); - memset(((char*)pInt)+nByte, 0x65, nReserve-nByte); - p = (void*)pInt; - } - sqlite3_mutex_leave(mem.mutex); - return p; -} - -/* -** Free memory. -*/ -static void sqlite3MemFree(void *pPrior){ - struct MemBlockHdr *pHdr; - void **pBt; - char *z; - assert( sqlite3GlobalConfig.bMemstat || sqlite3GlobalConfig.bCoreMutex==0 - || mem.mutex!=0 ); - pHdr = sqlite3MemsysGetHeader(pPrior); - pBt = (void**)pHdr; - pBt -= pHdr->nBacktraceSlots; - sqlite3_mutex_enter(mem.mutex); - if( pHdr->pPrev ){ - assert( pHdr->pPrev->pNext==pHdr ); - pHdr->pPrev->pNext = pHdr->pNext; - }else{ - assert( mem.pFirst==pHdr ); - mem.pFirst = pHdr->pNext; - } - if( pHdr->pNext ){ - assert( pHdr->pNext->pPrev==pHdr ); - pHdr->pNext->pPrev = pHdr->pPrev; - }else{ - assert( mem.pLast==pHdr ); - mem.pLast = pHdr->pPrev; - } - z = (char*)pBt; - z -= pHdr->nTitle; - adjustStats(pHdr->iSize, -1); - randomFill(z, sizeof(void*)*pHdr->nBacktraceSlots + sizeof(*pHdr) + - pHdr->iSize + sizeof(int) + pHdr->nTitle); - free(z); - sqlite3_mutex_leave(mem.mutex); -} - -/* -** Change the size of an existing memory allocation. -** -** For this debugging implementation, we *always* make a copy of the -** allocation into a new place in memory. In this way, if the -** higher level code is using pointer to the old allocation, it is -** much more likely to break and we are much more liking to find -** the error. -*/ -static void *sqlite3MemRealloc(void *pPrior, int nByte){ - struct MemBlockHdr *pOldHdr; - void *pNew; - assert( mem.disallow==0 ); - assert( (nByte & 7)==0 ); /* EV: R-46199-30249 */ - pOldHdr = sqlite3MemsysGetHeader(pPrior); - pNew = sqlite3MemMalloc(nByte); - if( pNew ){ - memcpy(pNew, pPrior, nByteiSize ? nByte : pOldHdr->iSize); - if( nByte>pOldHdr->iSize ){ - randomFill(&((char*)pNew)[pOldHdr->iSize], nByte - pOldHdr->iSize); - } - sqlite3MemFree(pPrior); - } - return pNew; -} - -/* -** Populate the low-level memory allocation function pointers in -** sqlite3GlobalConfig.m with pointers to the routines in this file. -*/ -void sqlite3MemSetDefault(void){ - static const sqlite3_mem_methods defaultMethods = { - sqlite3MemMalloc, - sqlite3MemFree, - sqlite3MemRealloc, - sqlite3MemSize, - sqlite3MemRoundup, - sqlite3MemInit, - sqlite3MemShutdown, - 0 - }; - sqlite3_config(SQLITE_CONFIG_MALLOC, &defaultMethods); -} - -/* -** Set the "type" of an allocation. -*/ -void sqlite3MemdebugSetType(void *p, u8 eType){ - if( p && sqlite3GlobalConfig.m.xMalloc==sqlite3MemMalloc ){ - struct MemBlockHdr *pHdr; - pHdr = sqlite3MemsysGetHeader(p); - assert( pHdr->iForeGuard==FOREGUARD ); - pHdr->eType = eType; - } -} - -/* -** Return TRUE if the mask of type in eType matches the type of the -** allocation p. Also return true if p==NULL. -** -** This routine is designed for use within an assert() statement, to -** verify the type of an allocation. For example: -** -** assert( sqlite3MemdebugHasType(p, MEMTYPE_DB) ); -*/ -int sqlite3MemdebugHasType(void *p, u8 eType){ - int rc = 1; - if( p && sqlite3GlobalConfig.m.xMalloc==sqlite3MemMalloc ){ - struct MemBlockHdr *pHdr; - pHdr = sqlite3MemsysGetHeader(p); - assert( pHdr->iForeGuard==FOREGUARD ); /* Allocation is valid */ - if( (pHdr->eType&eType)==0 ){ - rc = 0; - } - } - return rc; -} - -/* -** Return TRUE if the mask of type in eType matches no bits of the type of the -** allocation p. Also return true if p==NULL. -** -** This routine is designed for use within an assert() statement, to -** verify the type of an allocation. For example: -** -** assert( sqlite3MemdebugNoType(p, MEMTYPE_DB) ); -*/ -int sqlite3MemdebugNoType(void *p, u8 eType){ - int rc = 1; - if( p && sqlite3GlobalConfig.m.xMalloc==sqlite3MemMalloc ){ - struct MemBlockHdr *pHdr; - pHdr = sqlite3MemsysGetHeader(p); - assert( pHdr->iForeGuard==FOREGUARD ); /* Allocation is valid */ - if( (pHdr->eType&eType)!=0 ){ - rc = 0; - } - } - return rc; -} - -/* -** Set the number of backtrace levels kept for each allocation. -** A value of zero turns off backtracing. The number is always rounded -** up to a multiple of 2. -*/ -void sqlite3MemdebugBacktrace(int depth){ - if( depth<0 ){ depth = 0; } - if( depth>20 ){ depth = 20; } - depth = (depth+1)&0xfe; - mem.nBacktrace = depth; -} - -void sqlite3MemdebugBacktraceCallback(void (*xBacktrace)(int, int, void **)){ - mem.xBacktrace = xBacktrace; -} - -/* -** Set the title string for subsequent allocations. -*/ -void sqlite3MemdebugSettitle(const char *zTitle){ - unsigned int n = sqlite3Strlen30(zTitle) + 1; - sqlite3_mutex_enter(mem.mutex); - if( n>=sizeof(mem.zTitle) ) n = sizeof(mem.zTitle)-1; - memcpy(mem.zTitle, zTitle, n); - mem.zTitle[n] = 0; - mem.nTitle = ROUND8(n); - sqlite3_mutex_leave(mem.mutex); -} - -void sqlite3MemdebugSync(){ - struct MemBlockHdr *pHdr; - for(pHdr=mem.pFirst; pHdr; pHdr=pHdr->pNext){ - void **pBt = (void**)pHdr; - pBt -= pHdr->nBacktraceSlots; - mem.xBacktrace(pHdr->iSize, pHdr->nBacktrace-1, &pBt[1]); - } -} - -/* -** Open the file indicated and write a log of all unfreed memory -** allocations into that log. -*/ -void sqlite3MemdebugDump(const char *zFilename){ - FILE *out; - struct MemBlockHdr *pHdr; - void **pBt; - int i; - out = fopen(zFilename, "w"); - if( out==0 ){ - fprintf(stderr, "** Unable to output memory debug output log: %s **\n", - zFilename); - return; - } - for(pHdr=mem.pFirst; pHdr; pHdr=pHdr->pNext){ - char *z = (char*)pHdr; - z -= pHdr->nBacktraceSlots*sizeof(void*) + pHdr->nTitle; - fprintf(out, "**** %lld bytes at %p from %s ****\n", - pHdr->iSize, &pHdr[1], pHdr->nTitle ? z : "???"); - if( pHdr->nBacktrace ){ - fflush(out); - pBt = (void**)pHdr; - pBt -= pHdr->nBacktraceSlots; - backtrace_symbols_fd(pBt, pHdr->nBacktrace, fileno(out)); - fprintf(out, "\n"); - } - } - fprintf(out, "COUNTS:\n"); - for(i=0; i=1 ); - size = mem3.aPool[i-1].u.hdr.size4x/4; - assert( size==mem3.aPool[i+size-1].u.hdr.prevSize ); - assert( size>=2 ); - if( size <= MX_SMALL ){ - memsys3UnlinkFromList(i, &mem3.aiSmall[size-2]); - }else{ - hash = size % N_HASH; - memsys3UnlinkFromList(i, &mem3.aiHash[hash]); - } -} - -/* -** Link the chunk at mem3.aPool[i] so that is on the list rooted -** at *pRoot. -*/ -static void memsys3LinkIntoList(u32 i, u32 *pRoot){ - assert( sqlite3_mutex_held(mem3.mutex) ); - mem3.aPool[i].u.list.next = *pRoot; - mem3.aPool[i].u.list.prev = 0; - if( *pRoot ){ - mem3.aPool[*pRoot].u.list.prev = i; - } - *pRoot = i; -} - -/* -** Link the chunk at index i into either the appropriate -** small chunk list, or into the large chunk hash table. -*/ -static void memsys3Link(u32 i){ - u32 size, hash; - assert( sqlite3_mutex_held(mem3.mutex) ); - assert( i>=1 ); - assert( (mem3.aPool[i-1].u.hdr.size4x & 1)==0 ); - size = mem3.aPool[i-1].u.hdr.size4x/4; - assert( size==mem3.aPool[i+size-1].u.hdr.prevSize ); - assert( size>=2 ); - if( size <= MX_SMALL ){ - memsys3LinkIntoList(i, &mem3.aiSmall[size-2]); - }else{ - hash = size % N_HASH; - memsys3LinkIntoList(i, &mem3.aiHash[hash]); - } -} - -/* -** If the STATIC_MEM mutex is not already held, obtain it now. The mutex -** will already be held (obtained by code in malloc.c) if -** sqlite3GlobalConfig.bMemStat is true. -*/ -static void memsys3Enter(void){ - if( sqlite3GlobalConfig.bMemstat==0 && mem3.mutex==0 ){ - mem3.mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MEM); - } - sqlite3_mutex_enter(mem3.mutex); -} -static void memsys3Leave(void){ - sqlite3_mutex_leave(mem3.mutex); -} - -/* -** Called when we are unable to satisfy an allocation of nBytes. -*/ -static void memsys3OutOfMemory(int nByte){ - if( !mem3.alarmBusy ){ - mem3.alarmBusy = 1; - assert( sqlite3_mutex_held(mem3.mutex) ); - sqlite3_mutex_leave(mem3.mutex); - sqlite3_release_memory(nByte); - sqlite3_mutex_enter(mem3.mutex); - mem3.alarmBusy = 0; - } -} - - -/* -** Chunk i is a free chunk that has been unlinked. Adjust its -** size parameters for check-out and return a pointer to the -** user portion of the chunk. -*/ -static void *memsys3Checkout(u32 i, u32 nBlock){ - u32 x; - assert( sqlite3_mutex_held(mem3.mutex) ); - assert( i>=1 ); - assert( mem3.aPool[i-1].u.hdr.size4x/4==nBlock ); - assert( mem3.aPool[i+nBlock-1].u.hdr.prevSize==nBlock ); - x = mem3.aPool[i-1].u.hdr.size4x; - mem3.aPool[i-1].u.hdr.size4x = nBlock*4 | 1 | (x&2); - mem3.aPool[i+nBlock-1].u.hdr.prevSize = nBlock; - mem3.aPool[i+nBlock-1].u.hdr.size4x |= 2; - return &mem3.aPool[i]; -} - -/* -** Carve a piece off of the end of the mem3.iMaster free chunk. -** Return a pointer to the new allocation. Or, if the master chunk -** is not large enough, return 0. -*/ -static void *memsys3FromMaster(u32 nBlock){ - assert( sqlite3_mutex_held(mem3.mutex) ); - assert( mem3.szMaster>=nBlock ); - if( nBlock>=mem3.szMaster-1 ){ - /* Use the entire master */ - void *p = memsys3Checkout(mem3.iMaster, mem3.szMaster); - mem3.iMaster = 0; - mem3.szMaster = 0; - mem3.mnMaster = 0; - return p; - }else{ - /* Split the master block. Return the tail. */ - u32 newi, x; - newi = mem3.iMaster + mem3.szMaster - nBlock; - assert( newi > mem3.iMaster+1 ); - mem3.aPool[mem3.iMaster+mem3.szMaster-1].u.hdr.prevSize = nBlock; - mem3.aPool[mem3.iMaster+mem3.szMaster-1].u.hdr.size4x |= 2; - mem3.aPool[newi-1].u.hdr.size4x = nBlock*4 + 1; - mem3.szMaster -= nBlock; - mem3.aPool[newi-1].u.hdr.prevSize = mem3.szMaster; - x = mem3.aPool[mem3.iMaster-1].u.hdr.size4x & 2; - mem3.aPool[mem3.iMaster-1].u.hdr.size4x = mem3.szMaster*4 | x; - if( mem3.szMaster < mem3.mnMaster ){ - mem3.mnMaster = mem3.szMaster; - } - return (void*)&mem3.aPool[newi]; - } -} - -/* -** *pRoot is the head of a list of free chunks of the same size -** or same size hash. In other words, *pRoot is an entry in either -** mem3.aiSmall[] or mem3.aiHash[]. -** -** This routine examines all entries on the given list and tries -** to coalesce each entries with adjacent free chunks. -** -** If it sees a chunk that is larger than mem3.iMaster, it replaces -** the current mem3.iMaster with the new larger chunk. In order for -** this mem3.iMaster replacement to work, the master chunk must be -** linked into the hash tables. That is not the normal state of -** affairs, of course. The calling routine must link the master -** chunk before invoking this routine, then must unlink the (possibly -** changed) master chunk once this routine has finished. -*/ -static void memsys3Merge(u32 *pRoot){ - u32 iNext, prev, size, i, x; - - assert( sqlite3_mutex_held(mem3.mutex) ); - for(i=*pRoot; i>0; i=iNext){ - iNext = mem3.aPool[i].u.list.next; - size = mem3.aPool[i-1].u.hdr.size4x; - assert( (size&1)==0 ); - if( (size&2)==0 ){ - memsys3UnlinkFromList(i, pRoot); - assert( i > mem3.aPool[i-1].u.hdr.prevSize ); - prev = i - mem3.aPool[i-1].u.hdr.prevSize; - if( prev==iNext ){ - iNext = mem3.aPool[prev].u.list.next; - } - memsys3Unlink(prev); - size = i + size/4 - prev; - x = mem3.aPool[prev-1].u.hdr.size4x & 2; - mem3.aPool[prev-1].u.hdr.size4x = size*4 | x; - mem3.aPool[prev+size-1].u.hdr.prevSize = size; - memsys3Link(prev); - i = prev; - }else{ - size /= 4; - } - if( size>mem3.szMaster ){ - mem3.iMaster = i; - mem3.szMaster = size; - } - } -} - -/* -** Return a block of memory of at least nBytes in size. -** Return NULL if unable. -** -** This function assumes that the necessary mutexes, if any, are -** already held by the caller. Hence "Unsafe". -*/ -static void *memsys3MallocUnsafe(int nByte){ - u32 i; - u32 nBlock; - u32 toFree; - - assert( sqlite3_mutex_held(mem3.mutex) ); - assert( sizeof(Mem3Block)==8 ); - if( nByte<=12 ){ - nBlock = 2; - }else{ - nBlock = (nByte + 11)/8; - } - assert( nBlock>=2 ); - - /* STEP 1: - ** Look for an entry of the correct size in either the small - ** chunk table or in the large chunk hash table. This is - ** successful most of the time (about 9 times out of 10). - */ - if( nBlock <= MX_SMALL ){ - i = mem3.aiSmall[nBlock-2]; - if( i>0 ){ - memsys3UnlinkFromList(i, &mem3.aiSmall[nBlock-2]); - return memsys3Checkout(i, nBlock); - } - }else{ - int hash = nBlock % N_HASH; - for(i=mem3.aiHash[hash]; i>0; i=mem3.aPool[i].u.list.next){ - if( mem3.aPool[i-1].u.hdr.size4x/4==nBlock ){ - memsys3UnlinkFromList(i, &mem3.aiHash[hash]); - return memsys3Checkout(i, nBlock); - } - } - } - - /* STEP 2: - ** Try to satisfy the allocation by carving a piece off of the end - ** of the master chunk. This step usually works if step 1 fails. - */ - if( mem3.szMaster>=nBlock ){ - return memsys3FromMaster(nBlock); - } - - - /* STEP 3: - ** Loop through the entire memory pool. Coalesce adjacent free - ** chunks. Recompute the master chunk as the largest free chunk. - ** Then try again to satisfy the allocation by carving a piece off - ** of the end of the master chunk. This step happens very - ** rarely (we hope!) - */ - for(toFree=nBlock*16; toFree<(mem3.nPool*16); toFree *= 2){ - memsys3OutOfMemory(toFree); - if( mem3.iMaster ){ - memsys3Link(mem3.iMaster); - mem3.iMaster = 0; - mem3.szMaster = 0; - } - for(i=0; i=nBlock ){ - return memsys3FromMaster(nBlock); - } - } - } - - /* If none of the above worked, then we fail. */ - return 0; -} - -/* -** Free an outstanding memory allocation. -** -** This function assumes that the necessary mutexes, if any, are -** already held by the caller. Hence "Unsafe". -*/ -static void memsys3FreeUnsafe(void *pOld){ - Mem3Block *p = (Mem3Block*)pOld; - int i; - u32 size, x; - assert( sqlite3_mutex_held(mem3.mutex) ); - assert( p>mem3.aPool && p<&mem3.aPool[mem3.nPool] ); - i = p - mem3.aPool; - assert( (mem3.aPool[i-1].u.hdr.size4x&1)==1 ); - size = mem3.aPool[i-1].u.hdr.size4x/4; - assert( i+size<=mem3.nPool+1 ); - mem3.aPool[i-1].u.hdr.size4x &= ~1; - mem3.aPool[i+size-1].u.hdr.prevSize = size; - mem3.aPool[i+size-1].u.hdr.size4x &= ~2; - memsys3Link(i); - - /* Try to expand the master using the newly freed chunk */ - if( mem3.iMaster ){ - while( (mem3.aPool[mem3.iMaster-1].u.hdr.size4x&2)==0 ){ - size = mem3.aPool[mem3.iMaster-1].u.hdr.prevSize; - mem3.iMaster -= size; - mem3.szMaster += size; - memsys3Unlink(mem3.iMaster); - x = mem3.aPool[mem3.iMaster-1].u.hdr.size4x & 2; - mem3.aPool[mem3.iMaster-1].u.hdr.size4x = mem3.szMaster*4 | x; - mem3.aPool[mem3.iMaster+mem3.szMaster-1].u.hdr.prevSize = mem3.szMaster; - } - x = mem3.aPool[mem3.iMaster-1].u.hdr.size4x & 2; - while( (mem3.aPool[mem3.iMaster+mem3.szMaster-1].u.hdr.size4x&1)==0 ){ - memsys3Unlink(mem3.iMaster+mem3.szMaster); - mem3.szMaster += mem3.aPool[mem3.iMaster+mem3.szMaster-1].u.hdr.size4x/4; - mem3.aPool[mem3.iMaster-1].u.hdr.size4x = mem3.szMaster*4 | x; - mem3.aPool[mem3.iMaster+mem3.szMaster-1].u.hdr.prevSize = mem3.szMaster; - } - } -} - -/* -** Return the size of an outstanding allocation, in bytes. The -** size returned omits the 8-byte header overhead. This only -** works for chunks that are currently checked out. -*/ -static int memsys3Size(void *p){ - Mem3Block *pBlock; - if( p==0 ) return 0; - pBlock = (Mem3Block*)p; - assert( (pBlock[-1].u.hdr.size4x&1)!=0 ); - return (pBlock[-1].u.hdr.size4x&~3)*2 - 4; -} - -/* -** Round up a request size to the next valid allocation size. -*/ -static int memsys3Roundup(int n){ - if( n<=12 ){ - return 12; - }else{ - return ((n+11)&~7) - 4; - } -} - -/* -** Allocate nBytes of memory. -*/ -static void *memsys3Malloc(int nBytes){ - sqlite3_int64 *p; - assert( nBytes>0 ); /* malloc.c filters out 0 byte requests */ - memsys3Enter(); - p = memsys3MallocUnsafe(nBytes); - memsys3Leave(); - return (void*)p; -} - -/* -** Free memory. -*/ -static void memsys3Free(void *pPrior){ - assert( pPrior ); - memsys3Enter(); - memsys3FreeUnsafe(pPrior); - memsys3Leave(); -} - -/* -** Change the size of an existing memory allocation -*/ -static void *memsys3Realloc(void *pPrior, int nBytes){ - int nOld; - void *p; - if( pPrior==0 ){ - return sqlite3_malloc(nBytes); - } - if( nBytes<=0 ){ - sqlite3_free(pPrior); - return 0; - } - nOld = memsys3Size(pPrior); - if( nBytes<=nOld && nBytes>=nOld-128 ){ - return pPrior; - } - memsys3Enter(); - p = memsys3MallocUnsafe(nBytes); - if( p ){ - if( nOld>1)!=(size&1) ){ - fprintf(out, "%p tail checkout bit is incorrect\n", &mem3.aPool[i]); - assert( 0 ); - break; - } - if( size&1 ){ - fprintf(out, "%p %6d bytes checked out\n", &mem3.aPool[i], (size/4)*8-8); - }else{ - fprintf(out, "%p %6d bytes free%s\n", &mem3.aPool[i], (size/4)*8-8, - i==mem3.iMaster ? " **master**" : ""); - } - } - for(i=0; i0; j=mem3.aPool[j].u.list.next){ - fprintf(out, " %p(%d)", &mem3.aPool[j], - (mem3.aPool[j-1].u.hdr.size4x/4)*8-8); - } - fprintf(out, "\n"); - } - for(i=0; i0; j=mem3.aPool[j].u.list.next){ - fprintf(out, " %p(%d)", &mem3.aPool[j], - (mem3.aPool[j-1].u.hdr.size4x/4)*8-8); - } - fprintf(out, "\n"); - } - fprintf(out, "master=%d\n", mem3.iMaster); - fprintf(out, "nowUsed=%d\n", mem3.nPool*8 - mem3.szMaster*8); - fprintf(out, "mxUsed=%d\n", mem3.nPool*8 - mem3.mnMaster*8); - sqlite3_mutex_leave(mem3.mutex); - if( out==stdout ){ - fflush(stdout); - }else{ - fclose(out); - } -#else - UNUSED_PARAMETER(zFilename); -#endif -} - -/* -** This routine is the only routine in this file with external -** linkage. -** -** Populate the low-level memory allocation function pointers in -** sqlite3GlobalConfig.m with pointers to the routines in this file. The -** arguments specify the block of memory to manage. -** -** This routine is only called by sqlite3_config(), and therefore -** is not required to be threadsafe (it is not). -*/ -const sqlite3_mem_methods *sqlite3MemGetMemsys3(void){ - static const sqlite3_mem_methods mempoolMethods = { - memsys3Malloc, - memsys3Free, - memsys3Realloc, - memsys3Size, - memsys3Roundup, - memsys3Init, - memsys3Shutdown, - 0 - }; - return &mempoolMethods; -} - -#endif /* SQLITE_ENABLE_MEMSYS3 */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mem5.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mem5.c deleted file mode 100644 index 48047ff706..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mem5.c +++ /dev/null @@ -1,581 +0,0 @@ -/* -** 2007 October 14 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file contains the C functions that implement a memory -** allocation subsystem for use by SQLite. -** -** This version of the memory allocation subsystem omits all -** use of malloc(). The application gives SQLite a block of memory -** before calling sqlite3_initialize() from which allocations -** are made and returned by the xMalloc() and xRealloc() -** implementations. Once sqlite3_initialize() has been called, -** the amount of memory available to SQLite is fixed and cannot -** be changed. -** -** This version of the memory allocation subsystem is included -** in the build only if SQLITE_ENABLE_MEMSYS5 is defined. -** -** This memory allocator uses the following algorithm: -** -** 1. All memory allocations sizes are rounded up to a power of 2. -** -** 2. If two adjacent free blocks are the halves of a larger block, -** then the two blocks are coalesed into the single larger block. -** -** 3. New memory is allocated from the first available free block. -** -** This algorithm is described in: J. M. Robson. "Bounds for Some Functions -** Concerning Dynamic Storage Allocation". Journal of the Association for -** Computing Machinery, Volume 21, Number 8, July 1974, pages 491-499. -** -** Let n be the size of the largest allocation divided by the minimum -** allocation size (after rounding all sizes up to a power of 2.) Let M -** be the maximum amount of memory ever outstanding at one time. Let -** N be the total amount of memory available for allocation. Robson -** proved that this memory allocator will never breakdown due to -** fragmentation as long as the following constraint holds: -** -** N >= M*(1 + log2(n)/2) - n + 1 -** -** The sqlite3_status() logic tracks the maximum values of n and M so -** that an application can, at any time, verify this constraint. -*/ -#include "sqliteInt.h" - -/* -** This version of the memory allocator is used only when -** SQLITE_ENABLE_MEMSYS5 is defined. -*/ -#ifdef SQLITE_ENABLE_MEMSYS5 - -/* -** A minimum allocation is an instance of the following structure. -** Larger allocations are an array of these structures where the -** size of the array is a power of 2. -** -** The size of this object must be a power of two. That fact is -** verified in memsys5Init(). -*/ -typedef struct Mem5Link Mem5Link; -struct Mem5Link { - int next; /* Index of next free chunk */ - int prev; /* Index of previous free chunk */ -}; - -/* -** Maximum size of any allocation is ((1<=0 && i=0 && iLogsize<=LOGMAX ); - assert( (mem5.aCtrl[i] & CTRL_LOGSIZE)==iLogsize ); - - next = MEM5LINK(i)->next; - prev = MEM5LINK(i)->prev; - if( prev<0 ){ - mem5.aiFreelist[iLogsize] = next; - }else{ - MEM5LINK(prev)->next = next; - } - if( next>=0 ){ - MEM5LINK(next)->prev = prev; - } -} - -/* -** Link the chunk at mem5.aPool[i] so that is on the iLogsize -** free list. -*/ -static void memsys5Link(int i, int iLogsize){ - int x; - assert( sqlite3_mutex_held(mem5.mutex) ); - assert( i>=0 && i=0 && iLogsize<=LOGMAX ); - assert( (mem5.aCtrl[i] & CTRL_LOGSIZE)==iLogsize ); - - x = MEM5LINK(i)->next = mem5.aiFreelist[iLogsize]; - MEM5LINK(i)->prev = -1; - if( x>=0 ){ - assert( xprev = i; - } - mem5.aiFreelist[iLogsize] = i; -} - -/* -** If the STATIC_MEM mutex is not already held, obtain it now. The mutex -** will already be held (obtained by code in malloc.c) if -** sqlite3GlobalConfig.bMemStat is true. -*/ -static void memsys5Enter(void){ - sqlite3_mutex_enter(mem5.mutex); -} -static void memsys5Leave(void){ - sqlite3_mutex_leave(mem5.mutex); -} - -/* -** Return the size of an outstanding allocation, in bytes. The -** size returned omits the 8-byte header overhead. This only -** works for chunks that are currently checked out. -*/ -static int memsys5Size(void *p){ - int iSize = 0; - if( p ){ - int i = ((u8 *)p-mem5.zPool)/mem5.szAtom; - assert( i>=0 && i=0 && iLogsize<=LOGMAX ); - i = iFirst = mem5.aiFreelist[iLogsize]; - assert( iFirst>=0 ); - while( i>0 ){ - if( inext; - } - memsys5Unlink(iFirst, iLogsize); - return iFirst; -} - -/* -** Return a block of memory of at least nBytes in size. -** Return NULL if unable. Return NULL if nBytes==0. -** -** The caller guarantees that nByte positive. -** -** The caller has obtained a mutex prior to invoking this -** routine so there is never any chance that two or more -** threads can be in this routine at the same time. -*/ -static void *memsys5MallocUnsafe(int nByte){ - int i; /* Index of a mem5.aPool[] slot */ - int iBin; /* Index into mem5.aiFreelist[] */ - int iFullSz; /* Size of allocation rounded up to power of 2 */ - int iLogsize; /* Log2 of iFullSz/POW2_MIN */ - - /* nByte must be a positive */ - assert( nByte>0 ); - - /* Keep track of the maximum allocation request. Even unfulfilled - ** requests are counted */ - if( (u32)nByte>mem5.maxRequest ){ - mem5.maxRequest = nByte; - } - - /* Abort if the requested allocation size is larger than the largest - ** power of two that we can represent using 32-bit signed integers. - */ - if( nByte > 0x40000000 ){ - return 0; - } - - /* Round nByte up to the next valid power of two */ - for(iFullSz=mem5.szAtom, iLogsize=0; iFullSzLOGMAX ){ - testcase( sqlite3GlobalConfig.xLog!=0 ); - sqlite3_log(SQLITE_NOMEM, "failed to allocate %u bytes", nByte); - return 0; - } - i = memsys5UnlinkFirst(iBin); - while( iBin>iLogsize ){ - int newSize; - - iBin--; - newSize = 1 << iBin; - mem5.aCtrl[i+newSize] = CTRL_FREE | iBin; - memsys5Link(i+newSize, iBin); - } - mem5.aCtrl[i] = iLogsize; - - /* Update allocator performance statistics. */ - mem5.nAlloc++; - mem5.totalAlloc += iFullSz; - mem5.totalExcess += iFullSz - nByte; - mem5.currentCount++; - mem5.currentOut += iFullSz; - if( mem5.maxCount=0 && iBlock0 ); - assert( mem5.currentOut>=(size*mem5.szAtom) ); - mem5.currentCount--; - mem5.currentOut -= size*mem5.szAtom; - assert( mem5.currentOut>0 || mem5.currentCount==0 ); - assert( mem5.currentCount>0 || mem5.currentOut==0 ); - - mem5.aCtrl[iBlock] = CTRL_FREE | iLogsize; - while( ALWAYS(iLogsize>iLogsize) & 1 ){ - iBuddy = iBlock - size; - }else{ - iBuddy = iBlock + size; - } - assert( iBuddy>=0 ); - if( (iBuddy+(1<mem5.nBlock ) break; - if( mem5.aCtrl[iBuddy]!=(CTRL_FREE | iLogsize) ) break; - memsys5Unlink(iBuddy, iLogsize); - iLogsize++; - if( iBuddy0 ){ - memsys5Enter(); - p = memsys5MallocUnsafe(nBytes); - memsys5Leave(); - } - return (void*)p; -} - -/* -** Free memory. -** -** The outer layer memory allocator prevents this routine from -** being called with pPrior==0. -*/ -static void memsys5Free(void *pPrior){ - assert( pPrior!=0 ); - memsys5Enter(); - memsys5FreeUnsafe(pPrior); - memsys5Leave(); -} - -/* -** Change the size of an existing memory allocation. -** -** The outer layer memory allocator prevents this routine from -** being called with pPrior==0. -** -** nBytes is always a value obtained from a prior call to -** memsys5Round(). Hence nBytes is always a non-negative power -** of two. If nBytes==0 that means that an oversize allocation -** (an allocation larger than 0x40000000) was requested and this -** routine should return 0 without freeing pPrior. -*/ -static void *memsys5Realloc(void *pPrior, int nBytes){ - int nOld; - void *p; - assert( pPrior!=0 ); - assert( (nBytes&(nBytes-1))==0 ); /* EV: R-46199-30249 */ - assert( nBytes>=0 ); - if( nBytes==0 ){ - return 0; - } - nOld = memsys5Size(pPrior); - if( nBytes<=nOld ){ - return pPrior; - } - memsys5Enter(); - p = memsys5MallocUnsafe(nBytes); - if( p ){ - memcpy(p, pPrior, nOld); - memsys5FreeUnsafe(pPrior); - } - memsys5Leave(); - return p; -} - -/* -** Round up a request size to the next valid allocation size. If -** the allocation is too large to be handled by this allocation system, -** return 0. -** -** All allocations must be a power of two and must be expressed by a -** 32-bit signed integer. Hence the largest allocation is 0x40000000 -** or 1073741824 bytes. -*/ -static int memsys5Roundup(int n){ - int iFullSz; - if( n > 0x40000000 ) return 0; - for(iFullSz=mem5.szAtom; iFullSz 0 -** memsys5Log(2) -> 1 -** memsys5Log(4) -> 2 -** memsys5Log(5) -> 3 -** memsys5Log(8) -> 3 -** memsys5Log(9) -> 4 -*/ -static int memsys5Log(int iValue){ - int iLog; - for(iLog=0; (iLog<(int)((sizeof(int)*8)-1)) && (1<mem5.szAtom ){ - mem5.szAtom = mem5.szAtom << 1; - } - - mem5.nBlock = (nByte / (mem5.szAtom+sizeof(u8))); - mem5.zPool = zByte; - mem5.aCtrl = (u8 *)&mem5.zPool[mem5.nBlock*mem5.szAtom]; - - for(ii=0; ii<=LOGMAX; ii++){ - mem5.aiFreelist[ii] = -1; - } - - iOffset = 0; - for(ii=LOGMAX; ii>=0; ii--){ - int nAlloc = (1<mem5.nBlock); - } - - /* If a mutex is required for normal operation, allocate one */ - if( sqlite3GlobalConfig.bMemstat==0 ){ - mem5.mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MEM); - } - - return SQLITE_OK; -} - -/* -** Deinitialize this module. -*/ -static void memsys5Shutdown(void *NotUsed){ - UNUSED_PARAMETER(NotUsed); - mem5.mutex = 0; - return; -} - -#ifdef SQLITE_TEST -/* -** Open the file indicated and write a log of all unfreed memory -** allocations into that log. -*/ -void sqlite3Memsys5Dump(const char *zFilename){ - FILE *out; - int i, j, n; - int nMinLog; - - if( zFilename==0 || zFilename[0]==0 ){ - out = stdout; - }else{ - out = fopen(zFilename, "w"); - if( out==0 ){ - fprintf(stderr, "** Unable to output memory debug output log: %s **\n", - zFilename); - return; - } - } - memsys5Enter(); - nMinLog = memsys5Log(mem5.szAtom); - for(i=0; i<=LOGMAX && i+nMinLog<32; i++){ - for(n=0, j=mem5.aiFreelist[i]; j>=0; j = MEM5LINK(j)->next, n++){} - fprintf(out, "freelist items of size %d: %d\n", mem5.szAtom << i, n); - } - fprintf(out, "mem5.nAlloc = %llu\n", mem5.nAlloc); - fprintf(out, "mem5.totalAlloc = %llu\n", mem5.totalAlloc); - fprintf(out, "mem5.totalExcess = %llu\n", mem5.totalExcess); - fprintf(out, "mem5.currentOut = %u\n", mem5.currentOut); - fprintf(out, "mem5.currentCount = %u\n", mem5.currentCount); - fprintf(out, "mem5.maxOut = %u\n", mem5.maxOut); - fprintf(out, "mem5.maxCount = %u\n", mem5.maxCount); - fprintf(out, "mem5.maxRequest = %u\n", mem5.maxRequest); - memsys5Leave(); - if( out==stdout ){ - fflush(stdout); - }else{ - fclose(out); - } -} -#endif - -/* -** This routine is the only routine in this file with external -** linkage. It returns a pointer to a static sqlite3_mem_methods -** struct populated with the memsys5 methods. -*/ -const sqlite3_mem_methods *sqlite3MemGetMemsys5(void){ - static const sqlite3_mem_methods memsys5Methods = { - memsys5Malloc, - memsys5Free, - memsys5Realloc, - memsys5Size, - memsys5Roundup, - memsys5Init, - memsys5Shutdown, - 0 - }; - return &memsys5Methods; -} - -#endif /* SQLITE_ENABLE_MEMSYS5 */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/memjournal.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/memjournal.c deleted file mode 100644 index ee44d050a1..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/memjournal.c +++ /dev/null @@ -1,259 +0,0 @@ -/* -** 2008 October 7 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** -** This file contains code use to implement an in-memory rollback journal. -** The in-memory rollback journal is used to journal transactions for -** ":memory:" databases and when the journal_mode=MEMORY pragma is used. -*/ -#include "sqliteInt.h" - -/* Forward references to internal structures */ -typedef struct MemJournal MemJournal; -typedef struct FilePoint FilePoint; -typedef struct FileChunk FileChunk; - -/* Space to hold the rollback journal is allocated in increments of -** this many bytes. -** -** The size chosen is a little less than a power of two. That way, -** the FileChunk object will have a size that almost exactly fills -** a power-of-two allocation. This mimimizes wasted space in power-of-two -** memory allocators. -*/ -#define JOURNAL_CHUNKSIZE ((int)(1024-sizeof(FileChunk*))) - -/* Macro to find the minimum of two numeric values. -*/ -#ifndef MIN -# define MIN(x,y) ((x)<(y)?(x):(y)) -#endif - -/* -** The rollback journal is composed of a linked list of these structures. -*/ -struct FileChunk { - FileChunk *pNext; /* Next chunk in the journal */ - u8 zChunk[JOURNAL_CHUNKSIZE]; /* Content of this chunk */ -}; - -/* -** An instance of this object serves as a cursor into the rollback journal. -** The cursor can be either for reading or writing. -*/ -struct FilePoint { - sqlite3_int64 iOffset; /* Offset from the beginning of the file */ - FileChunk *pChunk; /* Specific chunk into which cursor points */ -}; - -/* -** This subclass is a subclass of sqlite3_file. Each open memory-journal -** is an instance of this class. -*/ -struct MemJournal { - sqlite3_io_methods *pMethod; /* Parent class. MUST BE FIRST */ - FileChunk *pFirst; /* Head of in-memory chunk-list */ - FilePoint endpoint; /* Pointer to the end of the file */ - FilePoint readpoint; /* Pointer to the end of the last xRead() */ -}; - -/* -** Read data from the in-memory journal file. This is the implementation -** of the sqlite3_vfs.xRead method. -*/ -static int memjrnlRead( - sqlite3_file *pJfd, /* The journal file from which to read */ - void *zBuf, /* Put the results here */ - int iAmt, /* Number of bytes to read */ - sqlite_int64 iOfst /* Begin reading at this offset */ -){ - MemJournal *p = (MemJournal *)pJfd; - u8 *zOut = zBuf; - int nRead = iAmt; - int iChunkOffset; - FileChunk *pChunk; - - /* SQLite never tries to read past the end of a rollback journal file */ - assert( iOfst+iAmt<=p->endpoint.iOffset ); - - if( p->readpoint.iOffset!=iOfst || iOfst==0 ){ - sqlite3_int64 iOff = 0; - for(pChunk=p->pFirst; - ALWAYS(pChunk) && (iOff+JOURNAL_CHUNKSIZE)<=iOfst; - pChunk=pChunk->pNext - ){ - iOff += JOURNAL_CHUNKSIZE; - } - }else{ - pChunk = p->readpoint.pChunk; - } - - iChunkOffset = (int)(iOfst%JOURNAL_CHUNKSIZE); - do { - int iSpace = JOURNAL_CHUNKSIZE - iChunkOffset; - int nCopy = MIN(nRead, (JOURNAL_CHUNKSIZE - iChunkOffset)); - memcpy(zOut, &pChunk->zChunk[iChunkOffset], nCopy); - zOut += nCopy; - nRead -= iSpace; - iChunkOffset = 0; - } while( nRead>=0 && (pChunk=pChunk->pNext)!=0 && nRead>0 ); - p->readpoint.iOffset = iOfst+iAmt; - p->readpoint.pChunk = pChunk; - - return SQLITE_OK; -} - -/* -** Write data to the file. -*/ -static int memjrnlWrite( - sqlite3_file *pJfd, /* The journal file into which to write */ - const void *zBuf, /* Take data to be written from here */ - int iAmt, /* Number of bytes to write */ - sqlite_int64 iOfst /* Begin writing at this offset into the file */ -){ - MemJournal *p = (MemJournal *)pJfd; - int nWrite = iAmt; - u8 *zWrite = (u8 *)zBuf; - - /* An in-memory journal file should only ever be appended to. Random - ** access writes are not required by sqlite. - */ - assert( iOfst==p->endpoint.iOffset ); - UNUSED_PARAMETER(iOfst); - - while( nWrite>0 ){ - FileChunk *pChunk = p->endpoint.pChunk; - int iChunkOffset = (int)(p->endpoint.iOffset%JOURNAL_CHUNKSIZE); - int iSpace = MIN(nWrite, JOURNAL_CHUNKSIZE - iChunkOffset); - - if( iChunkOffset==0 ){ - /* New chunk is required to extend the file. */ - FileChunk *pNew = sqlite3_malloc(sizeof(FileChunk)); - if( !pNew ){ - return SQLITE_IOERR_NOMEM; - } - pNew->pNext = 0; - if( pChunk ){ - assert( p->pFirst ); - pChunk->pNext = pNew; - }else{ - assert( !p->pFirst ); - p->pFirst = pNew; - } - p->endpoint.pChunk = pNew; - } - - memcpy(&p->endpoint.pChunk->zChunk[iChunkOffset], zWrite, iSpace); - zWrite += iSpace; - nWrite -= iSpace; - p->endpoint.iOffset += iSpace; - } - - return SQLITE_OK; -} - -/* -** Truncate the file. -*/ -static int memjrnlTruncate(sqlite3_file *pJfd, sqlite_int64 size){ - MemJournal *p = (MemJournal *)pJfd; - FileChunk *pChunk; - assert(size==0); - UNUSED_PARAMETER(size); - pChunk = p->pFirst; - while( pChunk ){ - FileChunk *pTmp = pChunk; - pChunk = pChunk->pNext; - sqlite3_free(pTmp); - } - sqlite3MemJournalOpen(pJfd); - return SQLITE_OK; -} - -/* -** Close the file. -*/ -static int memjrnlClose(sqlite3_file *pJfd){ - memjrnlTruncate(pJfd, 0); - return SQLITE_OK; -} - - -/* -** Sync the file. -** -** Syncing an in-memory journal is a no-op. And, in fact, this routine -** is never called in a working implementation. This implementation -** exists purely as a contingency, in case some malfunction in some other -** part of SQLite causes Sync to be called by mistake. -*/ -static int memjrnlSync(sqlite3_file *NotUsed, int NotUsed2){ - UNUSED_PARAMETER2(NotUsed, NotUsed2); - return SQLITE_OK; -} - -/* -** Query the size of the file in bytes. -*/ -static int memjrnlFileSize(sqlite3_file *pJfd, sqlite_int64 *pSize){ - MemJournal *p = (MemJournal *)pJfd; - *pSize = (sqlite_int64) p->endpoint.iOffset; - return SQLITE_OK; -} - -/* -** Table of methods for MemJournal sqlite3_file object. -*/ -static const struct sqlite3_io_methods MemJournalMethods = { - 1, /* iVersion */ - memjrnlClose, /* xClose */ - memjrnlRead, /* xRead */ - memjrnlWrite, /* xWrite */ - memjrnlTruncate, /* xTruncate */ - memjrnlSync, /* xSync */ - memjrnlFileSize, /* xFileSize */ - 0, /* xLock */ - 0, /* xUnlock */ - 0, /* xCheckReservedLock */ - 0, /* xFileControl */ - 0, /* xSectorSize */ - 0, /* xDeviceCharacteristics */ - 0, /* xShmMap */ - 0, /* xShmLock */ - 0, /* xShmBarrier */ - 0 /* xShmUnlock */ -}; - -/* -** Open a journal file. -*/ -void sqlite3MemJournalOpen(sqlite3_file *pJfd){ - MemJournal *p = (MemJournal *)pJfd; - assert( EIGHT_BYTE_ALIGNMENT(p) ); - memset(p, 0, sqlite3MemJournalSize()); - p->pMethod = (sqlite3_io_methods*)&MemJournalMethods; -} - -/* -** Return true if the file-handle passed as an argument is -** an in-memory journal -*/ -int sqlite3IsMemJournal(sqlite3_file *pJfd){ - return pJfd->pMethods==&MemJournalMethods; -} - -/* -** Return the number of bytes required to store a MemJournal file descriptor. -*/ -int sqlite3MemJournalSize(void){ - return sizeof(MemJournal); -} diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mutex.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mutex.c deleted file mode 100644 index f9a7acec40..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mutex.c +++ /dev/null @@ -1,153 +0,0 @@ -/* -** 2007 August 14 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file contains the C functions that implement mutexes. -** -** This file contains code that is common across all mutex implementations. -*/ -#include "sqliteInt.h" - -#if defined(SQLITE_DEBUG) && !defined(SQLITE_MUTEX_OMIT) -/* -** For debugging purposes, record when the mutex subsystem is initialized -** and uninitialized so that we can assert() if there is an attempt to -** allocate a mutex while the system is uninitialized. -*/ -static SQLITE_WSD int mutexIsInit = 0; -#endif /* SQLITE_DEBUG */ - - -#ifndef SQLITE_MUTEX_OMIT -/* -** Initialize the mutex system. -*/ -int sqlite3MutexInit(void){ - int rc = SQLITE_OK; - if( !sqlite3GlobalConfig.mutex.xMutexAlloc ){ - /* If the xMutexAlloc method has not been set, then the user did not - ** install a mutex implementation via sqlite3_config() prior to - ** sqlite3_initialize() being called. This block copies pointers to - ** the default implementation into the sqlite3GlobalConfig structure. - */ - sqlite3_mutex_methods const *pFrom; - sqlite3_mutex_methods *pTo = &sqlite3GlobalConfig.mutex; - - if( sqlite3GlobalConfig.bCoreMutex ){ - pFrom = sqlite3DefaultMutex(); - }else{ - pFrom = sqlite3NoopMutex(); - } - memcpy(pTo, pFrom, offsetof(sqlite3_mutex_methods, xMutexAlloc)); - memcpy(&pTo->xMutexFree, &pFrom->xMutexFree, - sizeof(*pTo) - offsetof(sqlite3_mutex_methods, xMutexFree)); - pTo->xMutexAlloc = pFrom->xMutexAlloc; - } - rc = sqlite3GlobalConfig.mutex.xMutexInit(); - -#ifdef SQLITE_DEBUG - GLOBAL(int, mutexIsInit) = 1; -#endif - - return rc; -} - -/* -** Shutdown the mutex system. This call frees resources allocated by -** sqlite3MutexInit(). -*/ -int sqlite3MutexEnd(void){ - int rc = SQLITE_OK; - if( sqlite3GlobalConfig.mutex.xMutexEnd ){ - rc = sqlite3GlobalConfig.mutex.xMutexEnd(); - } - -#ifdef SQLITE_DEBUG - GLOBAL(int, mutexIsInit) = 0; -#endif - - return rc; -} - -/* -** Retrieve a pointer to a static mutex or allocate a new dynamic one. -*/ -sqlite3_mutex *sqlite3_mutex_alloc(int id){ -#ifndef SQLITE_OMIT_AUTOINIT - if( sqlite3_initialize() ) return 0; -#endif - return sqlite3GlobalConfig.mutex.xMutexAlloc(id); -} - -sqlite3_mutex *sqlite3MutexAlloc(int id){ - if( !sqlite3GlobalConfig.bCoreMutex ){ - return 0; - } - assert( GLOBAL(int, mutexIsInit) ); - return sqlite3GlobalConfig.mutex.xMutexAlloc(id); -} - -/* -** Free a dynamic mutex. -*/ -void sqlite3_mutex_free(sqlite3_mutex *p){ - if( p ){ - sqlite3GlobalConfig.mutex.xMutexFree(p); - } -} - -/* -** Obtain the mutex p. If some other thread already has the mutex, block -** until it can be obtained. -*/ -void sqlite3_mutex_enter(sqlite3_mutex *p){ - if( p ){ - sqlite3GlobalConfig.mutex.xMutexEnter(p); - } -} - -/* -** Obtain the mutex p. If successful, return SQLITE_OK. Otherwise, if another -** thread holds the mutex and it cannot be obtained, return SQLITE_BUSY. -*/ -int sqlite3_mutex_try(sqlite3_mutex *p){ - int rc = SQLITE_OK; - if( p ){ - return sqlite3GlobalConfig.mutex.xMutexTry(p); - } - return rc; -} - -/* -** The sqlite3_mutex_leave() routine exits a mutex that was previously -** entered by the same thread. The behavior is undefined if the mutex -** is not currently entered. If a NULL pointer is passed as an argument -** this function is a no-op. -*/ -void sqlite3_mutex_leave(sqlite3_mutex *p){ - if( p ){ - sqlite3GlobalConfig.mutex.xMutexLeave(p); - } -} - -#ifndef NDEBUG -/* -** The sqlite3_mutex_held() and sqlite3_mutex_notheld() routine are -** intended for use inside assert() statements. -*/ -int sqlite3_mutex_held(sqlite3_mutex *p){ - return p==0 || sqlite3GlobalConfig.mutex.xMutexHeld(p); -} -int sqlite3_mutex_notheld(sqlite3_mutex *p){ - return p==0 || sqlite3GlobalConfig.mutex.xMutexNotheld(p); -} -#endif - -#endif /* SQLITE_MUTEX_OMIT */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mutex.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mutex.h deleted file mode 100644 index 105617870c..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mutex.h +++ /dev/null @@ -1,74 +0,0 @@ -/* -** 2007 August 28 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** -** This file contains the common header for all mutex implementations. -** The sqliteInt.h header #includes this file so that it is available -** to all source files. We break it out in an effort to keep the code -** better organized. -** -** NOTE: source files should *not* #include this header file directly. -** Source files should #include the sqliteInt.h file and let that file -** include this one indirectly. -*/ - - -/* -** Figure out what version of the code to use. The choices are -** -** SQLITE_MUTEX_OMIT No mutex logic. Not even stubs. The -** mutexes implemention cannot be overridden -** at start-time. -** -** SQLITE_MUTEX_NOOP For single-threaded applications. No -** mutual exclusion is provided. But this -** implementation can be overridden at -** start-time. -** -** SQLITE_MUTEX_PTHREADS For multi-threaded applications on Unix. -** -** SQLITE_MUTEX_W32 For multi-threaded applications on Win32. -** -** SQLITE_MUTEX_OS2 For multi-threaded applications on OS/2. -*/ -#if !SQLITE_THREADSAFE -# define SQLITE_MUTEX_OMIT -#endif -#if SQLITE_THREADSAFE && !defined(SQLITE_MUTEX_NOOP) -# if SQLITE_OS_UNIX -# define SQLITE_MUTEX_PTHREADS -# elif SQLITE_OS_WIN -# define SQLITE_MUTEX_W32 -# elif SQLITE_OS_OS2 -# define SQLITE_MUTEX_OS2 -# else -# define SQLITE_MUTEX_NOOP -# endif -#endif - -#ifdef SQLITE_MUTEX_OMIT -/* -** If this is a no-op implementation, implement everything as macros. -*/ -#define sqlite3_mutex_alloc(X) ((sqlite3_mutex*)8) -#define sqlite3_mutex_free(X) -#define sqlite3_mutex_enter(X) -#define sqlite3_mutex_try(X) SQLITE_OK -#define sqlite3_mutex_leave(X) -#define sqlite3_mutex_held(X) ((void)(X),1) -#define sqlite3_mutex_notheld(X) ((void)(X),1) -#define sqlite3MutexAlloc(X) ((sqlite3_mutex*)8) -#define sqlite3MutexInit() SQLITE_OK -#define sqlite3MutexEnd() -#define MUTEX_LOGIC(X) -#else -#define MUTEX_LOGIC(X) X -#endif /* defined(SQLITE_MUTEX_OMIT) */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mutex_noop.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mutex_noop.c deleted file mode 100644 index 92aae49bfe..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mutex_noop.c +++ /dev/null @@ -1,206 +0,0 @@ -/* -** 2008 October 07 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file contains the C functions that implement mutexes. -** -** This implementation in this file does not provide any mutual -** exclusion and is thus suitable for use only in applications -** that use SQLite in a single thread. The routines defined -** here are place-holders. Applications can substitute working -** mutex routines at start-time using the -** -** sqlite3_config(SQLITE_CONFIG_MUTEX,...) -** -** interface. -** -** If compiled with SQLITE_DEBUG, then additional logic is inserted -** that does error checking on mutexes to make sure they are being -** called correctly. -*/ -#include "sqliteInt.h" - -#ifndef SQLITE_MUTEX_OMIT - -#ifndef SQLITE_DEBUG -/* -** Stub routines for all mutex methods. -** -** This routines provide no mutual exclusion or error checking. -*/ -static int noopMutexInit(void){ return SQLITE_OK; } -static int noopMutexEnd(void){ return SQLITE_OK; } -static sqlite3_mutex *noopMutexAlloc(int id){ - UNUSED_PARAMETER(id); - return (sqlite3_mutex*)8; -} -static void noopMutexFree(sqlite3_mutex *p){ UNUSED_PARAMETER(p); return; } -static void noopMutexEnter(sqlite3_mutex *p){ UNUSED_PARAMETER(p); return; } -static int noopMutexTry(sqlite3_mutex *p){ - UNUSED_PARAMETER(p); - return SQLITE_OK; -} -static void noopMutexLeave(sqlite3_mutex *p){ UNUSED_PARAMETER(p); return; } - -sqlite3_mutex_methods const *sqlite3NoopMutex(void){ - static const sqlite3_mutex_methods sMutex = { - noopMutexInit, - noopMutexEnd, - noopMutexAlloc, - noopMutexFree, - noopMutexEnter, - noopMutexTry, - noopMutexLeave, - - 0, - 0, - }; - - return &sMutex; -} -#endif /* !SQLITE_DEBUG */ - -#ifdef SQLITE_DEBUG -/* -** In this implementation, error checking is provided for testing -** and debugging purposes. The mutexes still do not provide any -** mutual exclusion. -*/ - -/* -** The mutex object -*/ -typedef struct sqlite3_debug_mutex { - int id; /* The mutex type */ - int cnt; /* Number of entries without a matching leave */ -} sqlite3_debug_mutex; - -/* -** The sqlite3_mutex_held() and sqlite3_mutex_notheld() routine are -** intended for use inside assert() statements. -*/ -static int debugMutexHeld(sqlite3_mutex *pX){ - sqlite3_debug_mutex *p = (sqlite3_debug_mutex*)pX; - return p==0 || p->cnt>0; -} -static int debugMutexNotheld(sqlite3_mutex *pX){ - sqlite3_debug_mutex *p = (sqlite3_debug_mutex*)pX; - return p==0 || p->cnt==0; -} - -/* -** Initialize and deinitialize the mutex subsystem. -*/ -static int debugMutexInit(void){ return SQLITE_OK; } -static int debugMutexEnd(void){ return SQLITE_OK; } - -/* -** The sqlite3_mutex_alloc() routine allocates a new -** mutex and returns a pointer to it. If it returns NULL -** that means that a mutex could not be allocated. -*/ -static sqlite3_mutex *debugMutexAlloc(int id){ - static sqlite3_debug_mutex aStatic[6]; - sqlite3_debug_mutex *pNew = 0; - switch( id ){ - case SQLITE_MUTEX_FAST: - case SQLITE_MUTEX_RECURSIVE: { - pNew = sqlite3Malloc(sizeof(*pNew)); - if( pNew ){ - pNew->id = id; - pNew->cnt = 0; - } - break; - } - default: { - assert( id-2 >= 0 ); - assert( id-2 < (int)(sizeof(aStatic)/sizeof(aStatic[0])) ); - pNew = &aStatic[id-2]; - pNew->id = id; - break; - } - } - return (sqlite3_mutex*)pNew; -} - -/* -** This routine deallocates a previously allocated mutex. -*/ -static void debugMutexFree(sqlite3_mutex *pX){ - sqlite3_debug_mutex *p = (sqlite3_debug_mutex*)pX; - assert( p->cnt==0 ); - assert( p->id==SQLITE_MUTEX_FAST || p->id==SQLITE_MUTEX_RECURSIVE ); - sqlite3_free(p); -} - -/* -** The sqlite3_mutex_enter() and sqlite3_mutex_try() routines attempt -** to enter a mutex. If another thread is already within the mutex, -** sqlite3_mutex_enter() will block and sqlite3_mutex_try() will return -** SQLITE_BUSY. The sqlite3_mutex_try() interface returns SQLITE_OK -** upon successful entry. Mutexes created using SQLITE_MUTEX_RECURSIVE can -** be entered multiple times by the same thread. In such cases the, -** mutex must be exited an equal number of times before another thread -** can enter. If the same thread tries to enter any other kind of mutex -** more than once, the behavior is undefined. -*/ -static void debugMutexEnter(sqlite3_mutex *pX){ - sqlite3_debug_mutex *p = (sqlite3_debug_mutex*)pX; - assert( p->id==SQLITE_MUTEX_RECURSIVE || debugMutexNotheld(pX) ); - p->cnt++; -} -static int debugMutexTry(sqlite3_mutex *pX){ - sqlite3_debug_mutex *p = (sqlite3_debug_mutex*)pX; - assert( p->id==SQLITE_MUTEX_RECURSIVE || debugMutexNotheld(pX) ); - p->cnt++; - return SQLITE_OK; -} - -/* -** The sqlite3_mutex_leave() routine exits a mutex that was -** previously entered by the same thread. The behavior -** is undefined if the mutex is not currently entered or -** is not currently allocated. SQLite will never do either. -*/ -static void debugMutexLeave(sqlite3_mutex *pX){ - sqlite3_debug_mutex *p = (sqlite3_debug_mutex*)pX; - assert( debugMutexHeld(pX) ); - p->cnt--; - assert( p->id==SQLITE_MUTEX_RECURSIVE || debugMutexNotheld(pX) ); -} - -sqlite3_mutex_methods const *sqlite3NoopMutex(void){ - static const sqlite3_mutex_methods sMutex = { - debugMutexInit, - debugMutexEnd, - debugMutexAlloc, - debugMutexFree, - debugMutexEnter, - debugMutexTry, - debugMutexLeave, - - debugMutexHeld, - debugMutexNotheld - }; - - return &sMutex; -} -#endif /* SQLITE_DEBUG */ - -/* -** If compiled with SQLITE_MUTEX_NOOP, then the no-op mutex implementation -** is used regardless of the run-time threadsafety setting. -*/ -#ifdef SQLITE_MUTEX_NOOP -sqlite3_mutex_methods const *sqlite3DefaultMutex(void){ - return sqlite3NoopMutex(); -} -#endif /* SQLITE_MUTEX_NOOP */ -#endif /* SQLITE_MUTEX_OMIT */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mutex_os2.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mutex_os2.c deleted file mode 100644 index e6ebe79637..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mutex_os2.c +++ /dev/null @@ -1,274 +0,0 @@ -/* -** 2007 August 28 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file contains the C functions that implement mutexes for OS/2 -*/ -#include "sqliteInt.h" - -/* -** The code in this file is only used if SQLITE_MUTEX_OS2 is defined. -** See the mutex.h file for details. -*/ -#ifdef SQLITE_MUTEX_OS2 - -/********************** OS/2 Mutex Implementation ********************** -** -** This implementation of mutexes is built using the OS/2 API. -*/ - -/* -** The mutex object -** Each recursive mutex is an instance of the following structure. -*/ -struct sqlite3_mutex { - HMTX mutex; /* Mutex controlling the lock */ - int id; /* Mutex type */ -#ifdef SQLITE_DEBUG - int trace; /* True to trace changes */ -#endif -}; - -#ifdef SQLITE_DEBUG -#define SQLITE3_MUTEX_INITIALIZER { 0, 0, 0 } -#else -#define SQLITE3_MUTEX_INITIALIZER { 0, 0 } -#endif - -/* -** Initialize and deinitialize the mutex subsystem. -*/ -static int os2MutexInit(void){ return SQLITE_OK; } -static int os2MutexEnd(void){ return SQLITE_OK; } - -/* -** The sqlite3_mutex_alloc() routine allocates a new -** mutex and returns a pointer to it. If it returns NULL -** that means that a mutex could not be allocated. -** SQLite will unwind its stack and return an error. The argument -** to sqlite3_mutex_alloc() is one of these integer constants: -** -**
    -**
  • SQLITE_MUTEX_FAST -**
  • SQLITE_MUTEX_RECURSIVE -**
  • SQLITE_MUTEX_STATIC_MASTER -**
  • SQLITE_MUTEX_STATIC_MEM -**
  • SQLITE_MUTEX_STATIC_MEM2 -**
  • SQLITE_MUTEX_STATIC_PRNG -**
  • SQLITE_MUTEX_STATIC_LRU -**
  • SQLITE_MUTEX_STATIC_LRU2 -**
-** -** The first two constants cause sqlite3_mutex_alloc() to create -** a new mutex. The new mutex is recursive when SQLITE_MUTEX_RECURSIVE -** is used but not necessarily so when SQLITE_MUTEX_FAST is used. -** The mutex implementation does not need to make a distinction -** between SQLITE_MUTEX_RECURSIVE and SQLITE_MUTEX_FAST if it does -** not want to. But SQLite will only request a recursive mutex in -** cases where it really needs one. If a faster non-recursive mutex -** implementation is available on the host platform, the mutex subsystem -** might return such a mutex in response to SQLITE_MUTEX_FAST. -** -** The other allowed parameters to sqlite3_mutex_alloc() each return -** a pointer to a static preexisting mutex. Six static mutexes are -** used by the current version of SQLite. Future versions of SQLite -** may add additional static mutexes. Static mutexes are for internal -** use by SQLite only. Applications that use SQLite mutexes should -** use only the dynamic mutexes returned by SQLITE_MUTEX_FAST or -** SQLITE_MUTEX_RECURSIVE. -** -** Note that if one of the dynamic mutex parameters (SQLITE_MUTEX_FAST -** or SQLITE_MUTEX_RECURSIVE) is used then sqlite3_mutex_alloc() -** returns a different mutex on every call. But for the static -** mutex types, the same mutex is returned on every call that has -** the same type number. -*/ -static sqlite3_mutex *os2MutexAlloc(int iType){ - sqlite3_mutex *p = NULL; - switch( iType ){ - case SQLITE_MUTEX_FAST: - case SQLITE_MUTEX_RECURSIVE: { - p = sqlite3MallocZero( sizeof(*p) ); - if( p ){ - p->id = iType; - if( DosCreateMutexSem( 0, &p->mutex, 0, FALSE ) != NO_ERROR ){ - sqlite3_free( p ); - p = NULL; - } - } - break; - } - default: { - static volatile int isInit = 0; - static sqlite3_mutex staticMutexes[6] = { - SQLITE3_MUTEX_INITIALIZER, - SQLITE3_MUTEX_INITIALIZER, - SQLITE3_MUTEX_INITIALIZER, - SQLITE3_MUTEX_INITIALIZER, - SQLITE3_MUTEX_INITIALIZER, - SQLITE3_MUTEX_INITIALIZER, - }; - if ( !isInit ){ - APIRET rc; - PTIB ptib; - PPIB ppib; - HMTX mutex; - char name[32]; - DosGetInfoBlocks( &ptib, &ppib ); - sqlite3_snprintf( sizeof(name), name, "\\SEM32\\SQLITE%04x", - ppib->pib_ulpid ); - while( !isInit ){ - mutex = 0; - rc = DosCreateMutexSem( name, &mutex, 0, FALSE); - if( rc == NO_ERROR ){ - unsigned int i; - if( !isInit ){ - for( i = 0; i < sizeof(staticMutexes)/sizeof(staticMutexes[0]); i++ ){ - DosCreateMutexSem( 0, &staticMutexes[i].mutex, 0, FALSE ); - } - isInit = 1; - } - DosCloseMutexSem( mutex ); - }else if( rc == ERROR_DUPLICATE_NAME ){ - DosSleep( 1 ); - }else{ - return p; - } - } - } - assert( iType-2 >= 0 ); - assert( iType-2 < sizeof(staticMutexes)/sizeof(staticMutexes[0]) ); - p = &staticMutexes[iType-2]; - p->id = iType; - break; - } - } - return p; -} - - -/* -** This routine deallocates a previously allocated mutex. -** SQLite is careful to deallocate every mutex that it allocates. -*/ -static void os2MutexFree(sqlite3_mutex *p){ -#ifdef SQLITE_DEBUG - TID tid; - PID pid; - ULONG ulCount; - DosQueryMutexSem(p->mutex, &pid, &tid, &ulCount); - assert( ulCount==0 ); - assert( p->id==SQLITE_MUTEX_FAST || p->id==SQLITE_MUTEX_RECURSIVE ); -#endif - DosCloseMutexSem( p->mutex ); - sqlite3_free( p ); -} - -#ifdef SQLITE_DEBUG -/* -** The sqlite3_mutex_held() and sqlite3_mutex_notheld() routine are -** intended for use inside assert() statements. -*/ -static int os2MutexHeld(sqlite3_mutex *p){ - TID tid; - PID pid; - ULONG ulCount; - PTIB ptib; - DosQueryMutexSem(p->mutex, &pid, &tid, &ulCount); - if( ulCount==0 || ( ulCount>1 && p->id!=SQLITE_MUTEX_RECURSIVE ) ) - return 0; - DosGetInfoBlocks(&ptib, NULL); - return tid==ptib->tib_ptib2->tib2_ultid; -} -static int os2MutexNotheld(sqlite3_mutex *p){ - TID tid; - PID pid; - ULONG ulCount; - PTIB ptib; - DosQueryMutexSem(p->mutex, &pid, &tid, &ulCount); - if( ulCount==0 ) - return 1; - DosGetInfoBlocks(&ptib, NULL); - return tid!=ptib->tib_ptib2->tib2_ultid; -} -static void os2MutexTrace(sqlite3_mutex *p, char *pAction){ - TID tid; - PID pid; - ULONG ulCount; - DosQueryMutexSem(p->mutex, &pid, &tid, &ulCount); - printf("%s mutex %p (%d) with nRef=%ld\n", pAction, (void*)p, p->trace, ulCount); -} -#endif - -/* -** The sqlite3_mutex_enter() and sqlite3_mutex_try() routines attempt -** to enter a mutex. If another thread is already within the mutex, -** sqlite3_mutex_enter() will block and sqlite3_mutex_try() will return -** SQLITE_BUSY. The sqlite3_mutex_try() interface returns SQLITE_OK -** upon successful entry. Mutexes created using SQLITE_MUTEX_RECURSIVE can -** be entered multiple times by the same thread. In such cases the, -** mutex must be exited an equal number of times before another thread -** can enter. If the same thread tries to enter any other kind of mutex -** more than once, the behavior is undefined. -*/ -static void os2MutexEnter(sqlite3_mutex *p){ - assert( p->id==SQLITE_MUTEX_RECURSIVE || os2MutexNotheld(p) ); - DosRequestMutexSem(p->mutex, SEM_INDEFINITE_WAIT); -#ifdef SQLITE_DEBUG - if( p->trace ) os2MutexTrace(p, "enter"); -#endif -} -static int os2MutexTry(sqlite3_mutex *p){ - int rc = SQLITE_BUSY; - assert( p->id==SQLITE_MUTEX_RECURSIVE || os2MutexNotheld(p) ); - if( DosRequestMutexSem(p->mutex, SEM_IMMEDIATE_RETURN) == NO_ERROR ) { - rc = SQLITE_OK; -#ifdef SQLITE_DEBUG - if( p->trace ) os2MutexTrace(p, "try"); -#endif - } - return rc; -} - -/* -** The sqlite3_mutex_leave() routine exits a mutex that was -** previously entered by the same thread. The behavior -** is undefined if the mutex is not currently entered or -** is not currently allocated. SQLite will never do either. -*/ -static void os2MutexLeave(sqlite3_mutex *p){ - assert( os2MutexHeld(p) ); - DosReleaseMutexSem(p->mutex); -#ifdef SQLITE_DEBUG - if( p->trace ) os2MutexTrace(p, "leave"); -#endif -} - -sqlite3_mutex_methods const *sqlite3DefaultMutex(void){ - static const sqlite3_mutex_methods sMutex = { - os2MutexInit, - os2MutexEnd, - os2MutexAlloc, - os2MutexFree, - os2MutexEnter, - os2MutexTry, - os2MutexLeave, -#ifdef SQLITE_DEBUG - os2MutexHeld, - os2MutexNotheld -#else - 0, - 0 -#endif - }; - - return &sMutex; -} -#endif /* SQLITE_MUTEX_OS2 */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mutex_unix.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mutex_unix.c deleted file mode 100644 index 4d61d4c1e3..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mutex_unix.c +++ /dev/null @@ -1,351 +0,0 @@ -/* -** 2007 August 28 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file contains the C functions that implement mutexes for pthreads -*/ -#include "sqliteInt.h" - -/* -** The code in this file is only used if we are compiling threadsafe -** under unix with pthreads. -** -** Note that this implementation requires a version of pthreads that -** supports recursive mutexes. -*/ -#ifdef SQLITE_MUTEX_PTHREADS - -#include - -/* -** The sqlite3_mutex.id, sqlite3_mutex.nRef, and sqlite3_mutex.owner fields -** are necessary under two condidtions: (1) Debug builds and (2) using -** home-grown mutexes. Encapsulate these conditions into a single #define. -*/ -#if defined(SQLITE_DEBUG) || defined(SQLITE_HOMEGROWN_RECURSIVE_MUTEX) -# define SQLITE_MUTEX_NREF 1 -#else -# define SQLITE_MUTEX_NREF 0 -#endif - -/* -** Each recursive mutex is an instance of the following structure. -*/ -struct sqlite3_mutex { - pthread_mutex_t mutex; /* Mutex controlling the lock */ -#if SQLITE_MUTEX_NREF - int id; /* Mutex type */ - volatile int nRef; /* Number of entrances */ - volatile pthread_t owner; /* Thread that is within this mutex */ - int trace; /* True to trace changes */ -#endif -}; -#if SQLITE_MUTEX_NREF -#define SQLITE3_MUTEX_INITIALIZER { PTHREAD_MUTEX_INITIALIZER, 0, 0, (pthread_t)0, 0 } -#else -#define SQLITE3_MUTEX_INITIALIZER { PTHREAD_MUTEX_INITIALIZER } -#endif - -/* -** The sqlite3_mutex_held() and sqlite3_mutex_notheld() routine are -** intended for use only inside assert() statements. On some platforms, -** there might be race conditions that can cause these routines to -** deliver incorrect results. In particular, if pthread_equal() is -** not an atomic operation, then these routines might delivery -** incorrect results. On most platforms, pthread_equal() is a -** comparison of two integers and is therefore atomic. But we are -** told that HPUX is not such a platform. If so, then these routines -** will not always work correctly on HPUX. -** -** On those platforms where pthread_equal() is not atomic, SQLite -** should be compiled without -DSQLITE_DEBUG and with -DNDEBUG to -** make sure no assert() statements are evaluated and hence these -** routines are never called. -*/ -#if !defined(NDEBUG) || defined(SQLITE_DEBUG) -static int pthreadMutexHeld(sqlite3_mutex *p){ - return (p->nRef!=0 && pthread_equal(p->owner, pthread_self())); -} -static int pthreadMutexNotheld(sqlite3_mutex *p){ - return p->nRef==0 || pthread_equal(p->owner, pthread_self())==0; -} -#endif - -/* -** Initialize and deinitialize the mutex subsystem. -*/ -static int pthreadMutexInit(void){ return SQLITE_OK; } -static int pthreadMutexEnd(void){ return SQLITE_OK; } - -/* -** The sqlite3_mutex_alloc() routine allocates a new -** mutex and returns a pointer to it. If it returns NULL -** that means that a mutex could not be allocated. SQLite -** will unwind its stack and return an error. The argument -** to sqlite3_mutex_alloc() is one of these integer constants: -** -**
    -**
  • SQLITE_MUTEX_FAST -**
  • SQLITE_MUTEX_RECURSIVE -**
  • SQLITE_MUTEX_STATIC_MASTER -**
  • SQLITE_MUTEX_STATIC_MEM -**
  • SQLITE_MUTEX_STATIC_MEM2 -**
  • SQLITE_MUTEX_STATIC_PRNG -**
  • SQLITE_MUTEX_STATIC_LRU -**
  • SQLITE_MUTEX_STATIC_PMEM -**
-** -** The first two constants cause sqlite3_mutex_alloc() to create -** a new mutex. The new mutex is recursive when SQLITE_MUTEX_RECURSIVE -** is used but not necessarily so when SQLITE_MUTEX_FAST is used. -** The mutex implementation does not need to make a distinction -** between SQLITE_MUTEX_RECURSIVE and SQLITE_MUTEX_FAST if it does -** not want to. But SQLite will only request a recursive mutex in -** cases where it really needs one. If a faster non-recursive mutex -** implementation is available on the host platform, the mutex subsystem -** might return such a mutex in response to SQLITE_MUTEX_FAST. -** -** The other allowed parameters to sqlite3_mutex_alloc() each return -** a pointer to a static preexisting mutex. Six static mutexes are -** used by the current version of SQLite. Future versions of SQLite -** may add additional static mutexes. Static mutexes are for internal -** use by SQLite only. Applications that use SQLite mutexes should -** use only the dynamic mutexes returned by SQLITE_MUTEX_FAST or -** SQLITE_MUTEX_RECURSIVE. -** -** Note that if one of the dynamic mutex parameters (SQLITE_MUTEX_FAST -** or SQLITE_MUTEX_RECURSIVE) is used then sqlite3_mutex_alloc() -** returns a different mutex on every call. But for the static -** mutex types, the same mutex is returned on every call that has -** the same type number. -*/ -static sqlite3_mutex *pthreadMutexAlloc(int iType){ - static sqlite3_mutex staticMutexes[] = { - SQLITE3_MUTEX_INITIALIZER, - SQLITE3_MUTEX_INITIALIZER, - SQLITE3_MUTEX_INITIALIZER, - SQLITE3_MUTEX_INITIALIZER, - SQLITE3_MUTEX_INITIALIZER, - SQLITE3_MUTEX_INITIALIZER - }; - sqlite3_mutex *p; - switch( iType ){ - case SQLITE_MUTEX_RECURSIVE: { - p = sqlite3MallocZero( sizeof(*p) ); - if( p ){ -#ifdef SQLITE_HOMEGROWN_RECURSIVE_MUTEX - /* If recursive mutexes are not available, we will have to - ** build our own. See below. */ - pthread_mutex_init(&p->mutex, 0); -#else - /* Use a recursive mutex if it is available */ - pthread_mutexattr_t recursiveAttr; - pthread_mutexattr_init(&recursiveAttr); - pthread_mutexattr_settype(&recursiveAttr, PTHREAD_MUTEX_RECURSIVE); - pthread_mutex_init(&p->mutex, &recursiveAttr); - pthread_mutexattr_destroy(&recursiveAttr); -#endif -#if SQLITE_MUTEX_NREF - p->id = iType; -#endif - } - break; - } - case SQLITE_MUTEX_FAST: { - p = sqlite3MallocZero( sizeof(*p) ); - if( p ){ -#if SQLITE_MUTEX_NREF - p->id = iType; -#endif - pthread_mutex_init(&p->mutex, 0); - } - break; - } - default: { - assert( iType-2 >= 0 ); - assert( iType-2 < ArraySize(staticMutexes) ); - p = &staticMutexes[iType-2]; -#if SQLITE_MUTEX_NREF - p->id = iType; -#endif - break; - } - } - return p; -} - - -/* -** This routine deallocates a previously -** allocated mutex. SQLite is careful to deallocate every -** mutex that it allocates. -*/ -static void pthreadMutexFree(sqlite3_mutex *p){ - assert( p->nRef==0 ); - assert( p->id==SQLITE_MUTEX_FAST || p->id==SQLITE_MUTEX_RECURSIVE ); - pthread_mutex_destroy(&p->mutex); - sqlite3_free(p); -} - -/* -** The sqlite3_mutex_enter() and sqlite3_mutex_try() routines attempt -** to enter a mutex. If another thread is already within the mutex, -** sqlite3_mutex_enter() will block and sqlite3_mutex_try() will return -** SQLITE_BUSY. The sqlite3_mutex_try() interface returns SQLITE_OK -** upon successful entry. Mutexes created using SQLITE_MUTEX_RECURSIVE can -** be entered multiple times by the same thread. In such cases the, -** mutex must be exited an equal number of times before another thread -** can enter. If the same thread tries to enter any other kind of mutex -** more than once, the behavior is undefined. -*/ -static void pthreadMutexEnter(sqlite3_mutex *p){ - assert( p->id==SQLITE_MUTEX_RECURSIVE || pthreadMutexNotheld(p) ); - -#ifdef SQLITE_HOMEGROWN_RECURSIVE_MUTEX - /* If recursive mutexes are not available, then we have to grow - ** our own. This implementation assumes that pthread_equal() - ** is atomic - that it cannot be deceived into thinking self - ** and p->owner are equal if p->owner changes between two values - ** that are not equal to self while the comparison is taking place. - ** This implementation also assumes a coherent cache - that - ** separate processes cannot read different values from the same - ** address at the same time. If either of these two conditions - ** are not met, then the mutexes will fail and problems will result. - */ - { - pthread_t self = pthread_self(); - if( p->nRef>0 && pthread_equal(p->owner, self) ){ - p->nRef++; - }else{ - pthread_mutex_lock(&p->mutex); - assert( p->nRef==0 ); - p->owner = self; - p->nRef = 1; - } - } -#else - /* Use the built-in recursive mutexes if they are available. - */ - pthread_mutex_lock(&p->mutex); -#if SQLITE_MUTEX_NREF - assert( p->nRef>0 || p->owner==0 ); - p->owner = pthread_self(); - p->nRef++; -#endif -#endif - -#ifdef SQLITE_DEBUG - if( p->trace ){ - printf("enter mutex %p (%d) with nRef=%d\n", p, p->trace, p->nRef); - } -#endif -} -static int pthreadMutexTry(sqlite3_mutex *p){ - int rc; - assert( p->id==SQLITE_MUTEX_RECURSIVE || pthreadMutexNotheld(p) ); - -#ifdef SQLITE_HOMEGROWN_RECURSIVE_MUTEX - /* If recursive mutexes are not available, then we have to grow - ** our own. This implementation assumes that pthread_equal() - ** is atomic - that it cannot be deceived into thinking self - ** and p->owner are equal if p->owner changes between two values - ** that are not equal to self while the comparison is taking place. - ** This implementation also assumes a coherent cache - that - ** separate processes cannot read different values from the same - ** address at the same time. If either of these two conditions - ** are not met, then the mutexes will fail and problems will result. - */ - { - pthread_t self = pthread_self(); - if( p->nRef>0 && pthread_equal(p->owner, self) ){ - p->nRef++; - rc = SQLITE_OK; - }else if( pthread_mutex_trylock(&p->mutex)==0 ){ - assert( p->nRef==0 ); - p->owner = self; - p->nRef = 1; - rc = SQLITE_OK; - }else{ - rc = SQLITE_BUSY; - } - } -#else - /* Use the built-in recursive mutexes if they are available. - */ - if( pthread_mutex_trylock(&p->mutex)==0 ){ -#if SQLITE_MUTEX_NREF - p->owner = pthread_self(); - p->nRef++; -#endif - rc = SQLITE_OK; - }else{ - rc = SQLITE_BUSY; - } -#endif - -#ifdef SQLITE_DEBUG - if( rc==SQLITE_OK && p->trace ){ - printf("enter mutex %p (%d) with nRef=%d\n", p, p->trace, p->nRef); - } -#endif - return rc; -} - -/* -** The sqlite3_mutex_leave() routine exits a mutex that was -** previously entered by the same thread. The behavior -** is undefined if the mutex is not currently entered or -** is not currently allocated. SQLite will never do either. -*/ -static void pthreadMutexLeave(sqlite3_mutex *p){ - assert( pthreadMutexHeld(p) ); -#if SQLITE_MUTEX_NREF - p->nRef--; - if( p->nRef==0 ) p->owner = 0; -#endif - assert( p->nRef==0 || p->id==SQLITE_MUTEX_RECURSIVE ); - -#ifdef SQLITE_HOMEGROWN_RECURSIVE_MUTEX - if( p->nRef==0 ){ - pthread_mutex_unlock(&p->mutex); - } -#else - pthread_mutex_unlock(&p->mutex); -#endif - -#ifdef SQLITE_DEBUG - if( p->trace ){ - printf("leave mutex %p (%d) with nRef=%d\n", p, p->trace, p->nRef); - } -#endif -} - -sqlite3_mutex_methods const *sqlite3DefaultMutex(void){ - static const sqlite3_mutex_methods sMutex = { - pthreadMutexInit, - pthreadMutexEnd, - pthreadMutexAlloc, - pthreadMutexFree, - pthreadMutexEnter, - pthreadMutexTry, - pthreadMutexLeave, -#ifdef SQLITE_DEBUG - pthreadMutexHeld, - pthreadMutexNotheld -#else - 0, - 0 -#endif - }; - - return &sMutex; -} - -#endif /* SQLITE_MUTEX_PTHREAD */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mutex_w32.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mutex_w32.c deleted file mode 100644 index d492a1daad..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/mutex_w32.c +++ /dev/null @@ -1,332 +0,0 @@ -/* -** 2007 August 14 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file contains the C functions that implement mutexes for win32 -*/ -#include "sqliteInt.h" - -/* -** The code in this file is only used if we are compiling multithreaded -** on a win32 system. -*/ -#ifdef SQLITE_MUTEX_W32 - -/* -** Each recursive mutex is an instance of the following structure. -*/ -struct sqlite3_mutex { - CRITICAL_SECTION mutex; /* Mutex controlling the lock */ - int id; /* Mutex type */ -#ifdef SQLITE_DEBUG - volatile int nRef; /* Number of enterances */ - volatile DWORD owner; /* Thread holding this mutex */ - int trace; /* True to trace changes */ -#endif -}; -#define SQLITE_W32_MUTEX_INITIALIZER { 0 } -#ifdef SQLITE_DEBUG -#define SQLITE3_MUTEX_INITIALIZER { SQLITE_W32_MUTEX_INITIALIZER, 0, 0L, (DWORD)0, 0 } -#else -#define SQLITE3_MUTEX_INITIALIZER { SQLITE_W32_MUTEX_INITIALIZER, 0 } -#endif - -/* -** Return true (non-zero) if we are running under WinNT, Win2K, WinXP, -** or WinCE. Return false (zero) for Win95, Win98, or WinME. -** -** Here is an interesting observation: Win95, Win98, and WinME lack -** the LockFileEx() API. But we can still statically link against that -** API as long as we don't call it win running Win95/98/ME. A call to -** this routine is used to determine if the host is Win95/98/ME or -** WinNT/2K/XP so that we will know whether or not we can safely call -** the LockFileEx() API. -** -** mutexIsNT() is only used for the TryEnterCriticalSection() API call, -** which is only available if your application was compiled with -** _WIN32_WINNT defined to a value >= 0x0400. Currently, the only -** call to TryEnterCriticalSection() is #ifdef'ed out, so #ifdef -** this out as well. -*/ -#if 0 -#if SQLITE_OS_WINCE -# define mutexIsNT() (1) -#else - static int mutexIsNT(void){ - static int osType = 0; - if( osType==0 ){ - OSVERSIONINFO sInfo; - sInfo.dwOSVersionInfoSize = sizeof(sInfo); - GetVersionEx(&sInfo); - osType = sInfo.dwPlatformId==VER_PLATFORM_WIN32_NT ? 2 : 1; - } - return osType==2; - } -#endif /* SQLITE_OS_WINCE */ -#endif - -#ifdef SQLITE_DEBUG -/* -** The sqlite3_mutex_held() and sqlite3_mutex_notheld() routine are -** intended for use only inside assert() statements. -*/ -static int winMutexHeld(sqlite3_mutex *p){ - return p->nRef!=0 && p->owner==GetCurrentThreadId(); -} -static int winMutexNotheld2(sqlite3_mutex *p, DWORD tid){ - return p->nRef==0 || p->owner!=tid; -} -static int winMutexNotheld(sqlite3_mutex *p){ - DWORD tid = GetCurrentThreadId(); - return winMutexNotheld2(p, tid); -} -#endif - - -/* -** Initialize and deinitialize the mutex subsystem. -*/ -static sqlite3_mutex winMutex_staticMutexes[6] = { - SQLITE3_MUTEX_INITIALIZER, - SQLITE3_MUTEX_INITIALIZER, - SQLITE3_MUTEX_INITIALIZER, - SQLITE3_MUTEX_INITIALIZER, - SQLITE3_MUTEX_INITIALIZER, - SQLITE3_MUTEX_INITIALIZER -}; -static int winMutex_isInit = 0; -/* As winMutexInit() and winMutexEnd() are called as part -** of the sqlite3_initialize and sqlite3_shutdown() -** processing, the "interlocked" magic is probably not -** strictly necessary. -*/ -static long winMutex_lock = 0; - -static int winMutexInit(void){ - /* The first to increment to 1 does actual initialization */ - if( InterlockedCompareExchange(&winMutex_lock, 1, 0)==0 ){ - int i; - for(i=0; i -**
  • SQLITE_MUTEX_FAST -**
  • SQLITE_MUTEX_RECURSIVE -**
  • SQLITE_MUTEX_STATIC_MASTER -**
  • SQLITE_MUTEX_STATIC_MEM -**
  • SQLITE_MUTEX_STATIC_MEM2 -**
  • SQLITE_MUTEX_STATIC_PRNG -**
  • SQLITE_MUTEX_STATIC_LRU -**
  • SQLITE_MUTEX_STATIC_PMEM -** -** -** The first two constants cause sqlite3_mutex_alloc() to create -** a new mutex. The new mutex is recursive when SQLITE_MUTEX_RECURSIVE -** is used but not necessarily so when SQLITE_MUTEX_FAST is used. -** The mutex implementation does not need to make a distinction -** between SQLITE_MUTEX_RECURSIVE and SQLITE_MUTEX_FAST if it does -** not want to. But SQLite will only request a recursive mutex in -** cases where it really needs one. If a faster non-recursive mutex -** implementation is available on the host platform, the mutex subsystem -** might return such a mutex in response to SQLITE_MUTEX_FAST. -** -** The other allowed parameters to sqlite3_mutex_alloc() each return -** a pointer to a static preexisting mutex. Six static mutexes are -** used by the current version of SQLite. Future versions of SQLite -** may add additional static mutexes. Static mutexes are for internal -** use by SQLite only. Applications that use SQLite mutexes should -** use only the dynamic mutexes returned by SQLITE_MUTEX_FAST or -** SQLITE_MUTEX_RECURSIVE. -** -** Note that if one of the dynamic mutex parameters (SQLITE_MUTEX_FAST -** or SQLITE_MUTEX_RECURSIVE) is used then sqlite3_mutex_alloc() -** returns a different mutex on every call. But for the static -** mutex types, the same mutex is returned on every call that has -** the same type number. -*/ -static sqlite3_mutex *winMutexAlloc(int iType){ - sqlite3_mutex *p; - - switch( iType ){ - case SQLITE_MUTEX_FAST: - case SQLITE_MUTEX_RECURSIVE: { - p = sqlite3MallocZero( sizeof(*p) ); - if( p ){ -#ifdef SQLITE_DEBUG - p->id = iType; -#endif - InitializeCriticalSection(&p->mutex); - } - break; - } - default: { - assert( winMutex_isInit==1 ); - assert( iType-2 >= 0 ); - assert( iType-2 < ArraySize(winMutex_staticMutexes) ); - p = &winMutex_staticMutexes[iType-2]; -#ifdef SQLITE_DEBUG - p->id = iType; -#endif - break; - } - } - return p; -} - - -/* -** This routine deallocates a previously -** allocated mutex. SQLite is careful to deallocate every -** mutex that it allocates. -*/ -static void winMutexFree(sqlite3_mutex *p){ - assert( p ); - assert( p->nRef==0 && p->owner==0 ); - assert( p->id==SQLITE_MUTEX_FAST || p->id==SQLITE_MUTEX_RECURSIVE ); - DeleteCriticalSection(&p->mutex); - sqlite3_free(p); -} - -/* -** The sqlite3_mutex_enter() and sqlite3_mutex_try() routines attempt -** to enter a mutex. If another thread is already within the mutex, -** sqlite3_mutex_enter() will block and sqlite3_mutex_try() will return -** SQLITE_BUSY. The sqlite3_mutex_try() interface returns SQLITE_OK -** upon successful entry. Mutexes created using SQLITE_MUTEX_RECURSIVE can -** be entered multiple times by the same thread. In such cases the, -** mutex must be exited an equal number of times before another thread -** can enter. If the same thread tries to enter any other kind of mutex -** more than once, the behavior is undefined. -*/ -static void winMutexEnter(sqlite3_mutex *p){ -#ifdef SQLITE_DEBUG - DWORD tid = GetCurrentThreadId(); - assert( p->id==SQLITE_MUTEX_RECURSIVE || winMutexNotheld2(p, tid) ); -#endif - EnterCriticalSection(&p->mutex); -#ifdef SQLITE_DEBUG - assert( p->nRef>0 || p->owner==0 ); - p->owner = tid; - p->nRef++; - if( p->trace ){ - printf("enter mutex %p (%d) with nRef=%d\n", p, p->trace, p->nRef); - } -#endif -} -static int winMutexTry(sqlite3_mutex *p){ -#ifndef NDEBUG - DWORD tid = GetCurrentThreadId(); -#endif - int rc = SQLITE_BUSY; - assert( p->id==SQLITE_MUTEX_RECURSIVE || winMutexNotheld2(p, tid) ); - /* - ** The sqlite3_mutex_try() routine is very rarely used, and when it - ** is used it is merely an optimization. So it is OK for it to always - ** fail. - ** - ** The TryEnterCriticalSection() interface is only available on WinNT. - ** And some windows compilers complain if you try to use it without - ** first doing some #defines that prevent SQLite from building on Win98. - ** For that reason, we will omit this optimization for now. See - ** ticket #2685. - */ -#if 0 - if( mutexIsNT() && TryEnterCriticalSection(&p->mutex) ){ - p->owner = tid; - p->nRef++; - rc = SQLITE_OK; - } -#else - UNUSED_PARAMETER(p); -#endif -#ifdef SQLITE_DEBUG - if( rc==SQLITE_OK && p->trace ){ - printf("try mutex %p (%d) with nRef=%d\n", p, p->trace, p->nRef); - } -#endif - return rc; -} - -/* -** The sqlite3_mutex_leave() routine exits a mutex that was -** previously entered by the same thread. The behavior -** is undefined if the mutex is not currently entered or -** is not currently allocated. SQLite will never do either. -*/ -static void winMutexLeave(sqlite3_mutex *p){ -#ifndef NDEBUG - DWORD tid = GetCurrentThreadId(); - assert( p->nRef>0 ); - assert( p->owner==tid ); - p->nRef--; - if( p->nRef==0 ) p->owner = 0; - assert( p->nRef==0 || p->id==SQLITE_MUTEX_RECURSIVE ); -#endif - LeaveCriticalSection(&p->mutex); -#ifdef SQLITE_DEBUG - if( p->trace ){ - printf("leave mutex %p (%d) with nRef=%d\n", p, p->trace, p->nRef); - } -#endif -} - -sqlite3_mutex_methods const *sqlite3DefaultMutex(void){ - static const sqlite3_mutex_methods sMutex = { - winMutexInit, - winMutexEnd, - winMutexAlloc, - winMutexFree, - winMutexEnter, - winMutexTry, - winMutexLeave, -#ifdef SQLITE_DEBUG - winMutexHeld, - winMutexNotheld -#else - 0, - 0 -#endif - }; - - return &sMutex; -} -#endif /* SQLITE_MUTEX_W32 */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/notify.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/notify.c deleted file mode 100644 index 4d7c3bc3c5..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/notify.c +++ /dev/null @@ -1,332 +0,0 @@ -/* -** 2009 March 3 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** -** This file contains the implementation of the sqlite3_unlock_notify() -** API method and its associated functionality. -*/ -#include "sqliteInt.h" -#include "btreeInt.h" - -/* Omit this entire file if SQLITE_ENABLE_UNLOCK_NOTIFY is not defined. */ -#ifdef SQLITE_ENABLE_UNLOCK_NOTIFY - -/* -** Public interfaces: -** -** sqlite3ConnectionBlocked() -** sqlite3ConnectionUnlocked() -** sqlite3ConnectionClosed() -** sqlite3_unlock_notify() -*/ - -#define assertMutexHeld() \ - assert( sqlite3_mutex_held(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)) ) - -/* -** Head of a linked list of all sqlite3 objects created by this process -** for which either sqlite3.pBlockingConnection or sqlite3.pUnlockConnection -** is not NULL. This variable may only accessed while the STATIC_MASTER -** mutex is held. -*/ -static sqlite3 *SQLITE_WSD sqlite3BlockedList = 0; - -#ifndef NDEBUG -/* -** This function is a complex assert() that verifies the following -** properties of the blocked connections list: -** -** 1) Each entry in the list has a non-NULL value for either -** pUnlockConnection or pBlockingConnection, or both. -** -** 2) All entries in the list that share a common value for -** xUnlockNotify are grouped together. -** -** 3) If the argument db is not NULL, then none of the entries in the -** blocked connections list have pUnlockConnection or pBlockingConnection -** set to db. This is used when closing connection db. -*/ -static void checkListProperties(sqlite3 *db){ - sqlite3 *p; - for(p=sqlite3BlockedList; p; p=p->pNextBlocked){ - int seen = 0; - sqlite3 *p2; - - /* Verify property (1) */ - assert( p->pUnlockConnection || p->pBlockingConnection ); - - /* Verify property (2) */ - for(p2=sqlite3BlockedList; p2!=p; p2=p2->pNextBlocked){ - if( p2->xUnlockNotify==p->xUnlockNotify ) seen = 1; - assert( p2->xUnlockNotify==p->xUnlockNotify || !seen ); - assert( db==0 || p->pUnlockConnection!=db ); - assert( db==0 || p->pBlockingConnection!=db ); - } - } -} -#else -# define checkListProperties(x) -#endif - -/* -** Remove connection db from the blocked connections list. If connection -** db is not currently a part of the list, this function is a no-op. -*/ -static void removeFromBlockedList(sqlite3 *db){ - sqlite3 **pp; - assertMutexHeld(); - for(pp=&sqlite3BlockedList; *pp; pp = &(*pp)->pNextBlocked){ - if( *pp==db ){ - *pp = (*pp)->pNextBlocked; - break; - } - } -} - -/* -** Add connection db to the blocked connections list. It is assumed -** that it is not already a part of the list. -*/ -static void addToBlockedList(sqlite3 *db){ - sqlite3 **pp; - assertMutexHeld(); - for( - pp=&sqlite3BlockedList; - *pp && (*pp)->xUnlockNotify!=db->xUnlockNotify; - pp=&(*pp)->pNextBlocked - ); - db->pNextBlocked = *pp; - *pp = db; -} - -/* -** Obtain the STATIC_MASTER mutex. -*/ -static void enterMutex(void){ - sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)); - checkListProperties(0); -} - -/* -** Release the STATIC_MASTER mutex. -*/ -static void leaveMutex(void){ - assertMutexHeld(); - checkListProperties(0); - sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)); -} - -/* -** Register an unlock-notify callback. -** -** This is called after connection "db" has attempted some operation -** but has received an SQLITE_LOCKED error because another connection -** (call it pOther) in the same process was busy using the same shared -** cache. pOther is found by looking at db->pBlockingConnection. -** -** If there is no blocking connection, the callback is invoked immediately, -** before this routine returns. -** -** If pOther is already blocked on db, then report SQLITE_LOCKED, to indicate -** a deadlock. -** -** Otherwise, make arrangements to invoke xNotify when pOther drops -** its locks. -** -** Each call to this routine overrides any prior callbacks registered -** on the same "db". If xNotify==0 then any prior callbacks are immediately -** cancelled. -*/ -int sqlite3_unlock_notify( - sqlite3 *db, - void (*xNotify)(void **, int), - void *pArg -){ - int rc = SQLITE_OK; - - sqlite3_mutex_enter(db->mutex); - enterMutex(); - - if( xNotify==0 ){ - removeFromBlockedList(db); - db->pBlockingConnection = 0; - db->pUnlockConnection = 0; - db->xUnlockNotify = 0; - db->pUnlockArg = 0; - }else if( 0==db->pBlockingConnection ){ - /* The blocking transaction has been concluded. Or there never was a - ** blocking transaction. In either case, invoke the notify callback - ** immediately. - */ - xNotify(&pArg, 1); - }else{ - sqlite3 *p; - - for(p=db->pBlockingConnection; p && p!=db; p=p->pUnlockConnection){} - if( p ){ - rc = SQLITE_LOCKED; /* Deadlock detected. */ - }else{ - db->pUnlockConnection = db->pBlockingConnection; - db->xUnlockNotify = xNotify; - db->pUnlockArg = pArg; - removeFromBlockedList(db); - addToBlockedList(db); - } - } - - leaveMutex(); - assert( !db->mallocFailed ); - sqlite3Error(db, rc, (rc?"database is deadlocked":0)); - sqlite3_mutex_leave(db->mutex); - return rc; -} - -/* -** This function is called while stepping or preparing a statement -** associated with connection db. The operation will return SQLITE_LOCKED -** to the user because it requires a lock that will not be available -** until connection pBlocker concludes its current transaction. -*/ -void sqlite3ConnectionBlocked(sqlite3 *db, sqlite3 *pBlocker){ - enterMutex(); - if( db->pBlockingConnection==0 && db->pUnlockConnection==0 ){ - addToBlockedList(db); - } - db->pBlockingConnection = pBlocker; - leaveMutex(); -} - -/* -** This function is called when -** the transaction opened by database db has just finished. Locks held -** by database connection db have been released. -** -** This function loops through each entry in the blocked connections -** list and does the following: -** -** 1) If the sqlite3.pBlockingConnection member of a list entry is -** set to db, then set pBlockingConnection=0. -** -** 2) If the sqlite3.pUnlockConnection member of a list entry is -** set to db, then invoke the configured unlock-notify callback and -** set pUnlockConnection=0. -** -** 3) If the two steps above mean that pBlockingConnection==0 and -** pUnlockConnection==0, remove the entry from the blocked connections -** list. -*/ -void sqlite3ConnectionUnlocked(sqlite3 *db){ - void (*xUnlockNotify)(void **, int) = 0; /* Unlock-notify cb to invoke */ - int nArg = 0; /* Number of entries in aArg[] */ - sqlite3 **pp; /* Iterator variable */ - void **aArg; /* Arguments to the unlock callback */ - void **aDyn = 0; /* Dynamically allocated space for aArg[] */ - void *aStatic[16]; /* Starter space for aArg[]. No malloc required */ - - aArg = aStatic; - enterMutex(); /* Enter STATIC_MASTER mutex */ - - /* This loop runs once for each entry in the blocked-connections list. */ - for(pp=&sqlite3BlockedList; *pp; /* no-op */ ){ - sqlite3 *p = *pp; - - /* Step 1. */ - if( p->pBlockingConnection==db ){ - p->pBlockingConnection = 0; - } - - /* Step 2. */ - if( p->pUnlockConnection==db ){ - assert( p->xUnlockNotify ); - if( p->xUnlockNotify!=xUnlockNotify && nArg!=0 ){ - xUnlockNotify(aArg, nArg); - nArg = 0; - } - - sqlite3BeginBenignMalloc(); - assert( aArg==aDyn || (aDyn==0 && aArg==aStatic) ); - assert( nArg<=(int)ArraySize(aStatic) || aArg==aDyn ); - if( (!aDyn && nArg==(int)ArraySize(aStatic)) - || (aDyn && nArg==(int)(sqlite3MallocSize(aDyn)/sizeof(void*))) - ){ - /* The aArg[] array needs to grow. */ - void **pNew = (void **)sqlite3Malloc(nArg*sizeof(void *)*2); - if( pNew ){ - memcpy(pNew, aArg, nArg*sizeof(void *)); - sqlite3_free(aDyn); - aDyn = aArg = pNew; - }else{ - /* This occurs when the array of context pointers that need to - ** be passed to the unlock-notify callback is larger than the - ** aStatic[] array allocated on the stack and the attempt to - ** allocate a larger array from the heap has failed. - ** - ** This is a difficult situation to handle. Returning an error - ** code to the caller is insufficient, as even if an error code - ** is returned the transaction on connection db will still be - ** closed and the unlock-notify callbacks on blocked connections - ** will go unissued. This might cause the application to wait - ** indefinitely for an unlock-notify callback that will never - ** arrive. - ** - ** Instead, invoke the unlock-notify callback with the context - ** array already accumulated. We can then clear the array and - ** begin accumulating any further context pointers without - ** requiring any dynamic allocation. This is sub-optimal because - ** it means that instead of one callback with a large array of - ** context pointers the application will receive two or more - ** callbacks with smaller arrays of context pointers, which will - ** reduce the applications ability to prioritize multiple - ** connections. But it is the best that can be done under the - ** circumstances. - */ - xUnlockNotify(aArg, nArg); - nArg = 0; - } - } - sqlite3EndBenignMalloc(); - - aArg[nArg++] = p->pUnlockArg; - xUnlockNotify = p->xUnlockNotify; - p->pUnlockConnection = 0; - p->xUnlockNotify = 0; - p->pUnlockArg = 0; - } - - /* Step 3. */ - if( p->pBlockingConnection==0 && p->pUnlockConnection==0 ){ - /* Remove connection p from the blocked connections list. */ - *pp = p->pNextBlocked; - p->pNextBlocked = 0; - }else{ - pp = &p->pNextBlocked; - } - } - - if( nArg!=0 ){ - xUnlockNotify(aArg, nArg); - } - sqlite3_free(aDyn); - leaveMutex(); /* Leave STATIC_MASTER mutex */ -} - -/* -** This is called when the database connection passed as an argument is -** being closed. The connection is removed from the blocked list. -*/ -void sqlite3ConnectionClosed(sqlite3 *db){ - sqlite3ConnectionUnlocked(db); - enterMutex(); - removeFromBlockedList(db); - checkListProperties(db); - leaveMutex(); -} -#endif diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/os.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/os.c deleted file mode 100644 index 724fb02616..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/os.c +++ /dev/null @@ -1,331 +0,0 @@ -/* -** 2005 November 29 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This file contains OS interface code that is common to all -** architectures. -*/ -#define _SQLITE_OS_C_ 1 -#include "sqliteInt.h" -#undef _SQLITE_OS_C_ - -/* -** The default SQLite sqlite3_vfs implementations do not allocate -** memory (actually, os_unix.c allocates a small amount of memory -** from within OsOpen()), but some third-party implementations may. -** So we test the effects of a malloc() failing and the sqlite3OsXXX() -** function returning SQLITE_IOERR_NOMEM using the DO_OS_MALLOC_TEST macro. -** -** The following functions are instrumented for malloc() failure -** testing: -** -** sqlite3OsOpen() -** sqlite3OsRead() -** sqlite3OsWrite() -** sqlite3OsSync() -** sqlite3OsLock() -** -*/ -#if defined(SQLITE_TEST) -int sqlite3_memdebug_vfs_oom_test = 1; - #define DO_OS_MALLOC_TEST(x) \ - if (sqlite3_memdebug_vfs_oom_test && (!x || !sqlite3IsMemJournal(x))) { \ - void *pTstAlloc = sqlite3Malloc(10); \ - if (!pTstAlloc) return SQLITE_IOERR_NOMEM; \ - sqlite3_free(pTstAlloc); \ - } -#else - #define DO_OS_MALLOC_TEST(x) -#endif - -/* -** The following routines are convenience wrappers around methods -** of the sqlite3_file object. This is mostly just syntactic sugar. All -** of this would be completely automatic if SQLite were coded using -** C++ instead of plain old C. -*/ -int sqlite3OsClose(sqlite3_file *pId){ - int rc = SQLITE_OK; - if( pId->pMethods ){ - rc = pId->pMethods->xClose(pId); - pId->pMethods = 0; - } - return rc; -} -int sqlite3OsRead(sqlite3_file *id, void *pBuf, int amt, i64 offset){ - DO_OS_MALLOC_TEST(id); - return id->pMethods->xRead(id, pBuf, amt, offset); -} -int sqlite3OsWrite(sqlite3_file *id, const void *pBuf, int amt, i64 offset){ - DO_OS_MALLOC_TEST(id); - return id->pMethods->xWrite(id, pBuf, amt, offset); -} -int sqlite3OsTruncate(sqlite3_file *id, i64 size){ - return id->pMethods->xTruncate(id, size); -} -int sqlite3OsSync(sqlite3_file *id, int flags){ - DO_OS_MALLOC_TEST(id); - return id->pMethods->xSync(id, flags); -} -int sqlite3OsFileSize(sqlite3_file *id, i64 *pSize){ - DO_OS_MALLOC_TEST(id); - return id->pMethods->xFileSize(id, pSize); -} -int sqlite3OsLock(sqlite3_file *id, int lockType){ - DO_OS_MALLOC_TEST(id); - return id->pMethods->xLock(id, lockType); -} -int sqlite3OsUnlock(sqlite3_file *id, int lockType){ - return id->pMethods->xUnlock(id, lockType); -} -int sqlite3OsCheckReservedLock(sqlite3_file *id, int *pResOut){ - DO_OS_MALLOC_TEST(id); - return id->pMethods->xCheckReservedLock(id, pResOut); -} -int sqlite3OsFileControl(sqlite3_file *id, int op, void *pArg){ - return id->pMethods->xFileControl(id, op, pArg); -} -int sqlite3OsSectorSize(sqlite3_file *id){ - int (*xSectorSize)(sqlite3_file*) = id->pMethods->xSectorSize; - return (xSectorSize ? xSectorSize(id) : SQLITE_DEFAULT_SECTOR_SIZE); -} -int sqlite3OsDeviceCharacteristics(sqlite3_file *id){ - return id->pMethods->xDeviceCharacteristics(id); -} -int sqlite3OsShmLock(sqlite3_file *id, int offset, int n, int flags){ - return id->pMethods->xShmLock(id, offset, n, flags); -} -void sqlite3OsShmBarrier(sqlite3_file *id){ - id->pMethods->xShmBarrier(id); -} -int sqlite3OsShmUnmap(sqlite3_file *id, int deleteFlag){ - return id->pMethods->xShmUnmap(id, deleteFlag); -} -int sqlite3OsShmMap( - sqlite3_file *id, /* Database file handle */ - int iPage, - int pgsz, - int bExtend, /* True to extend file if necessary */ - void volatile **pp /* OUT: Pointer to mapping */ -){ - return id->pMethods->xShmMap(id, iPage, pgsz, bExtend, pp); -} - -/* -** The next group of routines are convenience wrappers around the -** VFS methods. -*/ -int sqlite3OsOpen( - sqlite3_vfs *pVfs, - const char *zPath, - sqlite3_file *pFile, - int flags, - int *pFlagsOut -){ - int rc; - DO_OS_MALLOC_TEST(0); - /* 0x87f3f is a mask of SQLITE_OPEN_ flags that are valid to be passed - ** down into the VFS layer. Some SQLITE_OPEN_ flags (for example, - ** SQLITE_OPEN_FULLMUTEX or SQLITE_OPEN_SHAREDCACHE) are blocked before - ** reaching the VFS. */ - rc = pVfs->xOpen(pVfs, zPath, pFile, flags & 0x87f7f, pFlagsOut); - assert( rc==SQLITE_OK || pFile->pMethods==0 ); - return rc; -} -int sqlite3OsDelete(sqlite3_vfs *pVfs, const char *zPath, int dirSync){ - return pVfs->xDelete(pVfs, zPath, dirSync); -} -int sqlite3OsAccess( - sqlite3_vfs *pVfs, - const char *zPath, - int flags, - int *pResOut -){ - DO_OS_MALLOC_TEST(0); - return pVfs->xAccess(pVfs, zPath, flags, pResOut); -} -int sqlite3OsFullPathname( - sqlite3_vfs *pVfs, - const char *zPath, - int nPathOut, - char *zPathOut -){ - zPathOut[0] = 0; - return pVfs->xFullPathname(pVfs, zPath, nPathOut, zPathOut); -} -#ifndef SQLITE_OMIT_LOAD_EXTENSION -void *sqlite3OsDlOpen(sqlite3_vfs *pVfs, const char *zPath){ - return pVfs->xDlOpen(pVfs, zPath); -} -void sqlite3OsDlError(sqlite3_vfs *pVfs, int nByte, char *zBufOut){ - pVfs->xDlError(pVfs, nByte, zBufOut); -} -void (*sqlite3OsDlSym(sqlite3_vfs *pVfs, void *pHdle, const char *zSym))(void){ - return pVfs->xDlSym(pVfs, pHdle, zSym); -} -void sqlite3OsDlClose(sqlite3_vfs *pVfs, void *pHandle){ - pVfs->xDlClose(pVfs, pHandle); -} -#endif /* SQLITE_OMIT_LOAD_EXTENSION */ -int sqlite3OsRandomness(sqlite3_vfs *pVfs, int nByte, char *zBufOut){ - return pVfs->xRandomness(pVfs, nByte, zBufOut); -} -int sqlite3OsSleep(sqlite3_vfs *pVfs, int nMicro){ - return pVfs->xSleep(pVfs, nMicro); -} -int sqlite3OsCurrentTimeInt64(sqlite3_vfs *pVfs, sqlite3_int64 *pTimeOut){ - int rc; - /* IMPLEMENTATION-OF: R-49045-42493 SQLite will use the xCurrentTimeInt64() - ** method to get the current date and time if that method is available - ** (if iVersion is 2 or greater and the function pointer is not NULL) and - ** will fall back to xCurrentTime() if xCurrentTimeInt64() is - ** unavailable. - */ - if( pVfs->iVersion>=2 && pVfs->xCurrentTimeInt64 ){ - rc = pVfs->xCurrentTimeInt64(pVfs, pTimeOut); - }else{ - double r; - rc = pVfs->xCurrentTime(pVfs, &r); - *pTimeOut = (sqlite3_int64)(r*86400000.0); - } - return rc; -} - -int sqlite3OsOpenMalloc( - sqlite3_vfs *pVfs, - const char *zFile, - sqlite3_file **ppFile, - int flags, - int *pOutFlags -){ - int rc = SQLITE_NOMEM; - sqlite3_file *pFile; - pFile = (sqlite3_file *)sqlite3MallocZero(pVfs->szOsFile); - if( pFile ){ - rc = sqlite3OsOpen(pVfs, zFile, pFile, flags, pOutFlags); - if( rc!=SQLITE_OK ){ - sqlite3_free(pFile); - }else{ - *ppFile = pFile; - } - } - return rc; -} -int sqlite3OsCloseFree(sqlite3_file *pFile){ - int rc = SQLITE_OK; - assert( pFile ); - rc = sqlite3OsClose(pFile); - sqlite3_free(pFile); - return rc; -} - -/* -** This function is a wrapper around the OS specific implementation of -** sqlite3_os_init(). The purpose of the wrapper is to provide the -** ability to simulate a malloc failure, so that the handling of an -** error in sqlite3_os_init() by the upper layers can be tested. -*/ -int sqlite3OsInit(void){ - void *p = sqlite3_malloc(10); - if( p==0 ) return SQLITE_NOMEM; - sqlite3_free(p); - return sqlite3_os_init(); -} - -/* -** The list of all registered VFS implementations. -*/ -static sqlite3_vfs * SQLITE_WSD vfsList = 0; -#define vfsList GLOBAL(sqlite3_vfs *, vfsList) - -/* -** Locate a VFS by name. If no name is given, simply return the -** first VFS on the list. -*/ -sqlite3_vfs *sqlite3_vfs_find(const char *zVfs){ - sqlite3_vfs *pVfs = 0; -#if SQLITE_THREADSAFE - sqlite3_mutex *mutex; -#endif -#ifndef SQLITE_OMIT_AUTOINIT - int rc = sqlite3_initialize(); - if( rc ) return 0; -#endif -#if SQLITE_THREADSAFE - mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); -#endif - sqlite3_mutex_enter(mutex); - for(pVfs = vfsList; pVfs; pVfs=pVfs->pNext){ - if( zVfs==0 ) break; - if( strcmp(zVfs, pVfs->zName)==0 ) break; - } - sqlite3_mutex_leave(mutex); - return pVfs; -} - -/* -** Unlink a VFS from the linked list -*/ -static void vfsUnlink(sqlite3_vfs *pVfs){ - assert( sqlite3_mutex_held(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)) ); - if( pVfs==0 ){ - /* No-op */ - }else if( vfsList==pVfs ){ - vfsList = pVfs->pNext; - }else if( vfsList ){ - sqlite3_vfs *p = vfsList; - while( p->pNext && p->pNext!=pVfs ){ - p = p->pNext; - } - if( p->pNext==pVfs ){ - p->pNext = pVfs->pNext; - } - } -} - -/* -** Register a VFS with the system. It is harmless to register the same -** VFS multiple times. The new VFS becomes the default if makeDflt is -** true. -*/ -int sqlite3_vfs_register(sqlite3_vfs *pVfs, int makeDflt){ - MUTEX_LOGIC(sqlite3_mutex *mutex;) -#ifndef SQLITE_OMIT_AUTOINIT - int rc = sqlite3_initialize(); - if( rc ) return rc; -#endif - MUTEX_LOGIC( mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); ) - sqlite3_mutex_enter(mutex); - vfsUnlink(pVfs); - if( makeDflt || vfsList==0 ){ - pVfs->pNext = vfsList; - vfsList = pVfs; - }else{ - pVfs->pNext = vfsList->pNext; - vfsList->pNext = pVfs; - } - assert(vfsList); - sqlite3_mutex_leave(mutex); - return SQLITE_OK; -} - -/* -** Unregister a VFS so that it is no longer accessible. -*/ -int sqlite3_vfs_unregister(sqlite3_vfs *pVfs){ -#if SQLITE_THREADSAFE - sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); -#endif - sqlite3_mutex_enter(mutex); - vfsUnlink(pVfs); - sqlite3_mutex_leave(mutex); - return SQLITE_OK; -} diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/os.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/os.h deleted file mode 100644 index cd1deaedb6..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/os.h +++ /dev/null @@ -1,279 +0,0 @@ -/* -** 2001 September 16 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This header file (together with is companion C source-code file -** "os.c") attempt to abstract the underlying operating system so that -** the SQLite library will work on both POSIX and windows systems. -** -** This header file is #include-ed by sqliteInt.h and thus ends up -** being included by every source file. -*/ -#ifndef _SQLITE_OS_H_ -#define _SQLITE_OS_H_ - -/* -** Figure out if we are dealing with Unix, Windows, or some other -** operating system. After the following block of preprocess macros, -** all of SQLITE_OS_UNIX, SQLITE_OS_WIN, SQLITE_OS_OS2, and SQLITE_OS_OTHER -** will defined to either 1 or 0. One of the four will be 1. The other -** three will be 0. -*/ -#if defined(SQLITE_OS_OTHER) -# if SQLITE_OS_OTHER==1 -# undef SQLITE_OS_UNIX -# define SQLITE_OS_UNIX 0 -# undef SQLITE_OS_WIN -# define SQLITE_OS_WIN 0 -# undef SQLITE_OS_OS2 -# define SQLITE_OS_OS2 0 -# else -# undef SQLITE_OS_OTHER -# endif -#endif -#if !defined(SQLITE_OS_UNIX) && !defined(SQLITE_OS_OTHER) -# define SQLITE_OS_OTHER 0 -# ifndef SQLITE_OS_WIN -# if defined(_WIN32) || defined(WIN32) || defined(__CYGWIN__) || defined(__MINGW32__) || defined(__BORLANDC__) -# define SQLITE_OS_WIN 1 -# define SQLITE_OS_UNIX 0 -# define SQLITE_OS_OS2 0 -# elif defined(__EMX__) || defined(_OS2) || defined(OS2) || defined(_OS2_) || defined(__OS2__) -# define SQLITE_OS_WIN 0 -# define SQLITE_OS_UNIX 0 -# define SQLITE_OS_OS2 1 -# else -# define SQLITE_OS_WIN 0 -# define SQLITE_OS_UNIX 1 -# define SQLITE_OS_OS2 0 -# endif -# else -# define SQLITE_OS_UNIX 0 -# define SQLITE_OS_OS2 0 -# endif -#else -# ifndef SQLITE_OS_WIN -# define SQLITE_OS_WIN 0 -# endif -#endif - -/* -** Determine if we are dealing with WindowsCE - which has a much -** reduced API. -*/ -#if defined(_WIN32_WCE) -# define SQLITE_OS_WINCE 1 -#else -# define SQLITE_OS_WINCE 0 -#endif - - -/* -** Define the maximum size of a temporary filename -*/ -#if SQLITE_OS_WIN -# include -# define SQLITE_TEMPNAME_SIZE (MAX_PATH+50) -#elif SQLITE_OS_OS2 -# if (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ >= 3) && defined(OS2_HIGH_MEMORY) -# include /* has to be included before os2.h for linking to work */ -# endif -# define INCL_DOSDATETIME -# define INCL_DOSFILEMGR -# define INCL_DOSERRORS -# define INCL_DOSMISC -# define INCL_DOSPROCESS -# define INCL_DOSMODULEMGR -# define INCL_DOSSEMAPHORES -# include -# include -# define SQLITE_TEMPNAME_SIZE (CCHMAXPATHCOMP) -#else -# define SQLITE_TEMPNAME_SIZE 200 -#endif - -/* If the SET_FULLSYNC macro is not defined above, then make it -** a no-op -*/ -#ifndef SET_FULLSYNC -# define SET_FULLSYNC(x,y) -#endif - -/* -** The default size of a disk sector -*/ -#ifndef SQLITE_DEFAULT_SECTOR_SIZE -# define SQLITE_DEFAULT_SECTOR_SIZE 512 -#endif - -/* -** Temporary files are named starting with this prefix followed by 16 random -** alphanumeric characters, and no file extension. They are stored in the -** OS's standard temporary file directory, and are deleted prior to exit. -** If sqlite is being embedded in another program, you may wish to change the -** prefix to reflect your program's name, so that if your program exits -** prematurely, old temporary files can be easily identified. This can be done -** using -DSQLITE_TEMP_FILE_PREFIX=myprefix_ on the compiler command line. -** -** 2006-10-31: The default prefix used to be "sqlite_". But then -** Mcafee started using SQLite in their anti-virus product and it -** started putting files with the "sqlite" name in the c:/temp folder. -** This annoyed many windows users. Those users would then do a -** Google search for "sqlite", find the telephone numbers of the -** developers and call to wake them up at night and complain. -** For this reason, the default name prefix is changed to be "sqlite" -** spelled backwards. So the temp files are still identified, but -** anybody smart enough to figure out the code is also likely smart -** enough to know that calling the developer will not help get rid -** of the file. -*/ -#ifndef SQLITE_TEMP_FILE_PREFIX -# define SQLITE_TEMP_FILE_PREFIX "etilqs_" -#endif - -/* -** The following values may be passed as the second argument to -** sqlite3OsLock(). The various locks exhibit the following semantics: -** -** SHARED: Any number of processes may hold a SHARED lock simultaneously. -** RESERVED: A single process may hold a RESERVED lock on a file at -** any time. Other processes may hold and obtain new SHARED locks. -** PENDING: A single process may hold a PENDING lock on a file at -** any one time. Existing SHARED locks may persist, but no new -** SHARED locks may be obtained by other processes. -** EXCLUSIVE: An EXCLUSIVE lock precludes all other locks. -** -** PENDING_LOCK may not be passed directly to sqlite3OsLock(). Instead, a -** process that requests an EXCLUSIVE lock may actually obtain a PENDING -** lock. This can be upgraded to an EXCLUSIVE lock by a subsequent call to -** sqlite3OsLock(). -*/ -#define NO_LOCK 0 -#define SHARED_LOCK 1 -#define RESERVED_LOCK 2 -#define PENDING_LOCK 3 -#define EXCLUSIVE_LOCK 4 - -/* -** File Locking Notes: (Mostly about windows but also some info for Unix) -** -** We cannot use LockFileEx() or UnlockFileEx() on Win95/98/ME because -** those functions are not available. So we use only LockFile() and -** UnlockFile(). -** -** LockFile() prevents not just writing but also reading by other processes. -** A SHARED_LOCK is obtained by locking a single randomly-chosen -** byte out of a specific range of bytes. The lock byte is obtained at -** random so two separate readers can probably access the file at the -** same time, unless they are unlucky and choose the same lock byte. -** An EXCLUSIVE_LOCK is obtained by locking all bytes in the range. -** There can only be one writer. A RESERVED_LOCK is obtained by locking -** a single byte of the file that is designated as the reserved lock byte. -** A PENDING_LOCK is obtained by locking a designated byte different from -** the RESERVED_LOCK byte. -** -** On WinNT/2K/XP systems, LockFileEx() and UnlockFileEx() are available, -** which means we can use reader/writer locks. When reader/writer locks -** are used, the lock is placed on the same range of bytes that is used -** for probabilistic locking in Win95/98/ME. Hence, the locking scheme -** will support two or more Win95 readers or two or more WinNT readers. -** But a single Win95 reader will lock out all WinNT readers and a single -** WinNT reader will lock out all other Win95 readers. -** -** The following #defines specify the range of bytes used for locking. -** SHARED_SIZE is the number of bytes available in the pool from which -** a random byte is selected for a shared lock. The pool of bytes for -** shared locks begins at SHARED_FIRST. -** -** The same locking strategy and -** byte ranges are used for Unix. This leaves open the possiblity of having -** clients on win95, winNT, and unix all talking to the same shared file -** and all locking correctly. To do so would require that samba (or whatever -** tool is being used for file sharing) implements locks correctly between -** windows and unix. I'm guessing that isn't likely to happen, but by -** using the same locking range we are at least open to the possibility. -** -** Locking in windows is manditory. For this reason, we cannot store -** actual data in the bytes used for locking. The pager never allocates -** the pages involved in locking therefore. SHARED_SIZE is selected so -** that all locks will fit on a single page even at the minimum page size. -** PENDING_BYTE defines the beginning of the locks. By default PENDING_BYTE -** is set high so that we don't have to allocate an unused page except -** for very large databases. But one should test the page skipping logic -** by setting PENDING_BYTE low and running the entire regression suite. -** -** Changing the value of PENDING_BYTE results in a subtly incompatible -** file format. Depending on how it is changed, you might not notice -** the incompatibility right away, even running a full regression test. -** The default location of PENDING_BYTE is the first byte past the -** 1GB boundary. -** -*/ -#ifdef SQLITE_OMIT_WSD -# define PENDING_BYTE (0x40000000) -#else -# define PENDING_BYTE sqlite3PendingByte -#endif -#define RESERVED_BYTE (PENDING_BYTE+1) -#define SHARED_FIRST (PENDING_BYTE+2) -#define SHARED_SIZE 510 - -/* -** Wrapper around OS specific sqlite3_os_init() function. -*/ -int sqlite3OsInit(void); - -/* -** Functions for accessing sqlite3_file methods -*/ -int sqlite3OsClose(sqlite3_file*); -int sqlite3OsRead(sqlite3_file*, void*, int amt, i64 offset); -int sqlite3OsWrite(sqlite3_file*, const void*, int amt, i64 offset); -int sqlite3OsTruncate(sqlite3_file*, i64 size); -int sqlite3OsSync(sqlite3_file*, int); -int sqlite3OsFileSize(sqlite3_file*, i64 *pSize); -int sqlite3OsLock(sqlite3_file*, int); -int sqlite3OsUnlock(sqlite3_file*, int); -int sqlite3OsCheckReservedLock(sqlite3_file *id, int *pResOut); -int sqlite3OsFileControl(sqlite3_file*,int,void*); -#define SQLITE_FCNTL_DB_UNCHANGED 0xca093fa0 -int sqlite3OsSectorSize(sqlite3_file *id); -int sqlite3OsDeviceCharacteristics(sqlite3_file *id); -int sqlite3OsShmMap(sqlite3_file *,int,int,int,void volatile **); -int sqlite3OsShmLock(sqlite3_file *id, int, int, int); -void sqlite3OsShmBarrier(sqlite3_file *id); -int sqlite3OsShmUnmap(sqlite3_file *id, int); - -/* -** Functions for accessing sqlite3_vfs methods -*/ -int sqlite3OsOpen(sqlite3_vfs *, const char *, sqlite3_file*, int, int *); -int sqlite3OsDelete(sqlite3_vfs *, const char *, int); -int sqlite3OsAccess(sqlite3_vfs *, const char *, int, int *pResOut); -int sqlite3OsFullPathname(sqlite3_vfs *, const char *, int, char *); -#ifndef SQLITE_OMIT_LOAD_EXTENSION -void *sqlite3OsDlOpen(sqlite3_vfs *, const char *); -void sqlite3OsDlError(sqlite3_vfs *, int, char *); -void (*sqlite3OsDlSym(sqlite3_vfs *, void *, const char *))(void); -void sqlite3OsDlClose(sqlite3_vfs *, void *); -#endif /* SQLITE_OMIT_LOAD_EXTENSION */ -int sqlite3OsRandomness(sqlite3_vfs *, int, char *); -int sqlite3OsSleep(sqlite3_vfs *, int); -int sqlite3OsCurrentTimeInt64(sqlite3_vfs *, sqlite3_int64*); - -/* -** Convenience functions for opening and closing files using -** sqlite3_malloc() to obtain space for the file-handle structure. -*/ -int sqlite3OsOpenMalloc(sqlite3_vfs *, const char *, sqlite3_file **, int,int*); -int sqlite3OsCloseFree(sqlite3_file *); - -#endif /* _SQLITE_OS_H_ */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/os_common.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/os_common.h deleted file mode 100644 index b05ae2a5ad..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/os_common.h +++ /dev/null @@ -1,115 +0,0 @@ -/* -** 2004 May 22 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This file contains macros and a little bit of code that is common to -** all of the platform-specific files (os_*.c) and is #included into those -** files. -** -** This file should be #included by the os_*.c files only. It is not a -** general purpose header file. -*/ -#ifndef _OS_COMMON_H_ -#define _OS_COMMON_H_ - -/* -** At least two bugs have slipped in because we changed the MEMORY_DEBUG -** macro to SQLITE_DEBUG and some older makefiles have not yet made the -** switch. The following code should catch this problem at compile-time. -*/ -#ifdef MEMORY_DEBUG -# error "The MEMORY_DEBUG macro is obsolete. Use SQLITE_DEBUG instead." -#endif - -#if defined(SQLITE_TEST) && defined(SQLITE_DEBUG) -# ifndef SQLITE_DEBUG_OS_TRACE -# define SQLITE_DEBUG_OS_TRACE 0 -# endif - int sqlite3OSTrace = SQLITE_DEBUG_OS_TRACE; -# define OSTRACE(X) if( sqlite3OSTrace ) sqlite3DebugPrintf X -#else -# define OSTRACE(X) -#endif - -/* -** Macros for performance tracing. Normally turned off. Only works -** on i486 hardware. -*/ -#ifdef SQLITE_PERFORMANCE_TRACE - -/* -** hwtime.h contains inline assembler code for implementing -** high-performance timing routines. -*/ -#include "hwtime.h" - -static sqlite_uint64 g_start; -static sqlite_uint64 g_elapsed; -#define TIMER_START g_start=sqlite3Hwtime() -#define TIMER_END g_elapsed=sqlite3Hwtime()-g_start -#define TIMER_ELAPSED g_elapsed -#else -#define TIMER_START -#define TIMER_END -#define TIMER_ELAPSED ((sqlite_uint64)0) -#endif - -/* -** If we compile with the SQLITE_TEST macro set, then the following block -** of code will give us the ability to simulate a disk I/O error. This -** is used for testing the I/O recovery logic. -*/ -#ifdef SQLITE_TEST -int sqlite3_io_error_hit = 0; /* Total number of I/O Errors */ -int sqlite3_io_error_hardhit = 0; /* Number of non-benign errors */ -int sqlite3_io_error_pending = 0; /* Count down to first I/O error */ -int sqlite3_io_error_persist = 0; /* True if I/O errors persist */ -int sqlite3_io_error_benign = 0; /* True if errors are benign */ -int sqlite3_diskfull_pending = 0; -int sqlite3_diskfull = 0; -#define SimulateIOErrorBenign(X) sqlite3_io_error_benign=(X) -#define SimulateIOError(CODE) \ - if( (sqlite3_io_error_persist && sqlite3_io_error_hit) \ - || sqlite3_io_error_pending-- == 1 ) \ - { local_ioerr(); CODE; } -static void local_ioerr(){ - IOTRACE(("IOERR\n")); - sqlite3_io_error_hit++; - if( !sqlite3_io_error_benign ) sqlite3_io_error_hardhit++; -} -#define SimulateDiskfullError(CODE) \ - if( sqlite3_diskfull_pending ){ \ - if( sqlite3_diskfull_pending == 1 ){ \ - local_ioerr(); \ - sqlite3_diskfull = 1; \ - sqlite3_io_error_hit = 1; \ - CODE; \ - }else{ \ - sqlite3_diskfull_pending--; \ - } \ - } -#else -#define SimulateIOErrorBenign(X) -#define SimulateIOError(A) -#define SimulateDiskfullError(A) -#endif - -/* -** When testing, keep a count of the number of open files. -*/ -#ifdef SQLITE_TEST -int sqlite3_open_file_count = 0; -#define OpenCounter(X) sqlite3_open_file_count+=(X) -#else -#define OpenCounter(X) -#endif - -#endif /* !defined(_OS_COMMON_H_) */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/os_os2.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/os_os2.c deleted file mode 100644 index ed16fc9572..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/os_os2.c +++ /dev/null @@ -1,1924 +0,0 @@ -/* -** 2006 Feb 14 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This file contains code that is specific to OS/2. -*/ - -#include "sqliteInt.h" - -#if SQLITE_OS_OS2 - -/* -** A Note About Memory Allocation: -** -** This driver uses malloc()/free() directly rather than going through -** the SQLite-wrappers sqlite3_malloc()/sqlite3_free(). Those wrappers -** are designed for use on embedded systems where memory is scarce and -** malloc failures happen frequently. OS/2 does not typically run on -** embedded systems, and when it does the developers normally have bigger -** problems to worry about than running out of memory. So there is not -** a compelling need to use the wrappers. -** -** But there is a good reason to not use the wrappers. If we use the -** wrappers then we will get simulated malloc() failures within this -** driver. And that causes all kinds of problems for our tests. We -** could enhance SQLite to deal with simulated malloc failures within -** the OS driver, but the code to deal with those failure would not -** be exercised on Linux (which does not need to malloc() in the driver) -** and so we would have difficulty writing coverage tests for that -** code. Better to leave the code out, we think. -** -** The point of this discussion is as follows: When creating a new -** OS layer for an embedded system, if you use this file as an example, -** avoid the use of malloc()/free(). Those routines work ok on OS/2 -** desktops but not so well in embedded systems. -*/ - -/* -** Macros used to determine whether or not to use threads. -*/ -#if defined(SQLITE_THREADSAFE) && SQLITE_THREADSAFE -# define SQLITE_OS2_THREADS 1 -#endif - -/* -** Include code that is common to all os_*.c files -*/ -#include "os_common.h" - -/* Forward references */ -typedef struct os2File os2File; /* The file structure */ -typedef struct os2ShmNode os2ShmNode; /* A shared descritive memory node */ -typedef struct os2ShmLink os2ShmLink; /* A connection to shared-memory */ - -/* -** The os2File structure is subclass of sqlite3_file specific for the OS/2 -** protability layer. -*/ -struct os2File { - const sqlite3_io_methods *pMethod; /* Always the first entry */ - HFILE h; /* Handle for accessing the file */ - int flags; /* Flags provided to os2Open() */ - int locktype; /* Type of lock currently held on this file */ - int szChunk; /* Chunk size configured by FCNTL_CHUNK_SIZE */ - char *zFullPathCp; /* Full path name of this file */ - os2ShmLink *pShmLink; /* Instance of shared memory on this file */ -}; - -#define LOCK_TIMEOUT 10L /* the default locking timeout */ - -/* -** Missing from some versions of the OS/2 toolkit - -** used to allocate from high memory if possible -*/ -#ifndef OBJ_ANY -# define OBJ_ANY 0x00000400 -#endif - -/***************************************************************************** -** The next group of routines implement the I/O methods specified -** by the sqlite3_io_methods object. -******************************************************************************/ - -/* -** Close a file. -*/ -static int os2Close( sqlite3_file *id ){ - APIRET rc; - os2File *pFile = (os2File*)id; - - assert( id!=0 ); - OSTRACE(( "CLOSE %d (%s)\n", pFile->h, pFile->zFullPathCp )); - - rc = DosClose( pFile->h ); - - if( pFile->flags & SQLITE_OPEN_DELETEONCLOSE ) - DosForceDelete( (PSZ)pFile->zFullPathCp ); - - free( pFile->zFullPathCp ); - pFile->zFullPathCp = NULL; - pFile->locktype = NO_LOCK; - pFile->h = (HFILE)-1; - pFile->flags = 0; - - OpenCounter( -1 ); - return rc == NO_ERROR ? SQLITE_OK : SQLITE_IOERR; -} - -/* -** Read data from a file into a buffer. Return SQLITE_OK if all -** bytes were read successfully and SQLITE_IOERR if anything goes -** wrong. -*/ -static int os2Read( - sqlite3_file *id, /* File to read from */ - void *pBuf, /* Write content into this buffer */ - int amt, /* Number of bytes to read */ - sqlite3_int64 offset /* Begin reading at this offset */ -){ - ULONG fileLocation = 0L; - ULONG got; - os2File *pFile = (os2File*)id; - assert( id!=0 ); - SimulateIOError( return SQLITE_IOERR_READ ); - OSTRACE(( "READ %d lock=%d\n", pFile->h, pFile->locktype )); - if( DosSetFilePtr(pFile->h, offset, FILE_BEGIN, &fileLocation) != NO_ERROR ){ - return SQLITE_IOERR; - } - if( DosRead( pFile->h, pBuf, amt, &got ) != NO_ERROR ){ - return SQLITE_IOERR_READ; - } - if( got == (ULONG)amt ) - return SQLITE_OK; - else { - /* Unread portions of the input buffer must be zero-filled */ - memset(&((char*)pBuf)[got], 0, amt-got); - return SQLITE_IOERR_SHORT_READ; - } -} - -/* -** Write data from a buffer into a file. Return SQLITE_OK on success -** or some other error code on failure. -*/ -static int os2Write( - sqlite3_file *id, /* File to write into */ - const void *pBuf, /* The bytes to be written */ - int amt, /* Number of bytes to write */ - sqlite3_int64 offset /* Offset into the file to begin writing at */ -){ - ULONG fileLocation = 0L; - APIRET rc = NO_ERROR; - ULONG wrote; - os2File *pFile = (os2File*)id; - assert( id!=0 ); - SimulateIOError( return SQLITE_IOERR_WRITE ); - SimulateDiskfullError( return SQLITE_FULL ); - OSTRACE(( "WRITE %d lock=%d\n", pFile->h, pFile->locktype )); - if( DosSetFilePtr(pFile->h, offset, FILE_BEGIN, &fileLocation) != NO_ERROR ){ - return SQLITE_IOERR; - } - assert( amt>0 ); - while( amt > 0 && - ( rc = DosWrite( pFile->h, (PVOID)pBuf, amt, &wrote ) ) == NO_ERROR && - wrote > 0 - ){ - amt -= wrote; - pBuf = &((char*)pBuf)[wrote]; - } - - return ( rc != NO_ERROR || amt > (int)wrote ) ? SQLITE_FULL : SQLITE_OK; -} - -/* -** Truncate an open file to a specified size -*/ -static int os2Truncate( sqlite3_file *id, i64 nByte ){ - APIRET rc; - os2File *pFile = (os2File*)id; - assert( id!=0 ); - OSTRACE(( "TRUNCATE %d %lld\n", pFile->h, nByte )); - SimulateIOError( return SQLITE_IOERR_TRUNCATE ); - - /* If the user has configured a chunk-size for this file, truncate the - ** file so that it consists of an integer number of chunks (i.e. the - ** actual file size after the operation may be larger than the requested - ** size). - */ - if( pFile->szChunk ){ - nByte = ((nByte + pFile->szChunk - 1)/pFile->szChunk) * pFile->szChunk; - } - - rc = DosSetFileSize( pFile->h, nByte ); - return rc == NO_ERROR ? SQLITE_OK : SQLITE_IOERR_TRUNCATE; -} - -#ifdef SQLITE_TEST -/* -** Count the number of fullsyncs and normal syncs. This is used to test -** that syncs and fullsyncs are occuring at the right times. -*/ -int sqlite3_sync_count = 0; -int sqlite3_fullsync_count = 0; -#endif - -/* -** Make sure all writes to a particular file are committed to disk. -*/ -static int os2Sync( sqlite3_file *id, int flags ){ - os2File *pFile = (os2File*)id; - OSTRACE(( "SYNC %d lock=%d\n", pFile->h, pFile->locktype )); -#ifdef SQLITE_TEST - if( flags & SQLITE_SYNC_FULL){ - sqlite3_fullsync_count++; - } - sqlite3_sync_count++; -#endif - /* If we compiled with the SQLITE_NO_SYNC flag, then syncing is a - ** no-op - */ -#ifdef SQLITE_NO_SYNC - UNUSED_PARAMETER(pFile); - return SQLITE_OK; -#else - return DosResetBuffer( pFile->h ) == NO_ERROR ? SQLITE_OK : SQLITE_IOERR; -#endif -} - -/* -** Determine the current size of a file in bytes -*/ -static int os2FileSize( sqlite3_file *id, sqlite3_int64 *pSize ){ - APIRET rc = NO_ERROR; - FILESTATUS3 fsts3FileInfo; - memset(&fsts3FileInfo, 0, sizeof(fsts3FileInfo)); - assert( id!=0 ); - SimulateIOError( return SQLITE_IOERR_FSTAT ); - rc = DosQueryFileInfo( ((os2File*)id)->h, FIL_STANDARD, &fsts3FileInfo, sizeof(FILESTATUS3) ); - if( rc == NO_ERROR ){ - *pSize = fsts3FileInfo.cbFile; - return SQLITE_OK; - }else{ - return SQLITE_IOERR_FSTAT; - } -} - -/* -** Acquire a reader lock. -*/ -static int getReadLock( os2File *pFile ){ - FILELOCK LockArea, - UnlockArea; - APIRET res; - memset(&LockArea, 0, sizeof(LockArea)); - memset(&UnlockArea, 0, sizeof(UnlockArea)); - LockArea.lOffset = SHARED_FIRST; - LockArea.lRange = SHARED_SIZE; - UnlockArea.lOffset = 0L; - UnlockArea.lRange = 0L; - res = DosSetFileLocks( pFile->h, &UnlockArea, &LockArea, LOCK_TIMEOUT, 1L ); - OSTRACE(( "GETREADLOCK %d res=%d\n", pFile->h, res )); - return res; -} - -/* -** Undo a readlock -*/ -static int unlockReadLock( os2File *id ){ - FILELOCK LockArea, - UnlockArea; - APIRET res; - memset(&LockArea, 0, sizeof(LockArea)); - memset(&UnlockArea, 0, sizeof(UnlockArea)); - LockArea.lOffset = 0L; - LockArea.lRange = 0L; - UnlockArea.lOffset = SHARED_FIRST; - UnlockArea.lRange = SHARED_SIZE; - res = DosSetFileLocks( id->h, &UnlockArea, &LockArea, LOCK_TIMEOUT, 1L ); - OSTRACE(( "UNLOCK-READLOCK file handle=%d res=%d?\n", id->h, res )); - return res; -} - -/* -** Lock the file with the lock specified by parameter locktype - one -** of the following: -** -** (1) SHARED_LOCK -** (2) RESERVED_LOCK -** (3) PENDING_LOCK -** (4) EXCLUSIVE_LOCK -** -** Sometimes when requesting one lock state, additional lock states -** are inserted in between. The locking might fail on one of the later -** transitions leaving the lock state different from what it started but -** still short of its goal. The following chart shows the allowed -** transitions and the inserted intermediate states: -** -** UNLOCKED -> SHARED -** SHARED -> RESERVED -** SHARED -> (PENDING) -> EXCLUSIVE -** RESERVED -> (PENDING) -> EXCLUSIVE -** PENDING -> EXCLUSIVE -** -** This routine will only increase a lock. The os2Unlock() routine -** erases all locks at once and returns us immediately to locking level 0. -** It is not possible to lower the locking level one step at a time. You -** must go straight to locking level 0. -*/ -static int os2Lock( sqlite3_file *id, int locktype ){ - int rc = SQLITE_OK; /* Return code from subroutines */ - APIRET res = NO_ERROR; /* Result of an OS/2 lock call */ - int newLocktype; /* Set pFile->locktype to this value before exiting */ - int gotPendingLock = 0;/* True if we acquired a PENDING lock this time */ - FILELOCK LockArea, - UnlockArea; - os2File *pFile = (os2File*)id; - memset(&LockArea, 0, sizeof(LockArea)); - memset(&UnlockArea, 0, sizeof(UnlockArea)); - assert( pFile!=0 ); - OSTRACE(( "LOCK %d %d was %d\n", pFile->h, locktype, pFile->locktype )); - - /* If there is already a lock of this type or more restrictive on the - ** os2File, do nothing. Don't use the end_lock: exit path, as - ** sqlite3_mutex_enter() hasn't been called yet. - */ - if( pFile->locktype>=locktype ){ - OSTRACE(( "LOCK %d %d ok (already held)\n", pFile->h, locktype )); - return SQLITE_OK; - } - - /* Make sure the locking sequence is correct - */ - assert( pFile->locktype!=NO_LOCK || locktype==SHARED_LOCK ); - assert( locktype!=PENDING_LOCK ); - assert( locktype!=RESERVED_LOCK || pFile->locktype==SHARED_LOCK ); - - /* Lock the PENDING_LOCK byte if we need to acquire a PENDING lock or - ** a SHARED lock. If we are acquiring a SHARED lock, the acquisition of - ** the PENDING_LOCK byte is temporary. - */ - newLocktype = pFile->locktype; - if( pFile->locktype==NO_LOCK - || (locktype==EXCLUSIVE_LOCK && pFile->locktype==RESERVED_LOCK) - ){ - LockArea.lOffset = PENDING_BYTE; - LockArea.lRange = 1L; - UnlockArea.lOffset = 0L; - UnlockArea.lRange = 0L; - - /* wait longer than LOCK_TIMEOUT here not to have to try multiple times */ - res = DosSetFileLocks( pFile->h, &UnlockArea, &LockArea, 100L, 0L ); - if( res == NO_ERROR ){ - gotPendingLock = 1; - OSTRACE(( "LOCK %d pending lock boolean set. res=%d\n", pFile->h, res )); - } - } - - /* Acquire a shared lock - */ - if( locktype==SHARED_LOCK && res == NO_ERROR ){ - assert( pFile->locktype==NO_LOCK ); - res = getReadLock(pFile); - if( res == NO_ERROR ){ - newLocktype = SHARED_LOCK; - } - OSTRACE(( "LOCK %d acquire shared lock. res=%d\n", pFile->h, res )); - } - - /* Acquire a RESERVED lock - */ - if( locktype==RESERVED_LOCK && res == NO_ERROR ){ - assert( pFile->locktype==SHARED_LOCK ); - LockArea.lOffset = RESERVED_BYTE; - LockArea.lRange = 1L; - UnlockArea.lOffset = 0L; - UnlockArea.lRange = 0L; - res = DosSetFileLocks( pFile->h, &UnlockArea, &LockArea, LOCK_TIMEOUT, 0L ); - if( res == NO_ERROR ){ - newLocktype = RESERVED_LOCK; - } - OSTRACE(( "LOCK %d acquire reserved lock. res=%d\n", pFile->h, res )); - } - - /* Acquire a PENDING lock - */ - if( locktype==EXCLUSIVE_LOCK && res == NO_ERROR ){ - newLocktype = PENDING_LOCK; - gotPendingLock = 0; - OSTRACE(( "LOCK %d acquire pending lock. pending lock boolean unset.\n", - pFile->h )); - } - - /* Acquire an EXCLUSIVE lock - */ - if( locktype==EXCLUSIVE_LOCK && res == NO_ERROR ){ - assert( pFile->locktype>=SHARED_LOCK ); - res = unlockReadLock(pFile); - OSTRACE(( "unreadlock = %d\n", res )); - LockArea.lOffset = SHARED_FIRST; - LockArea.lRange = SHARED_SIZE; - UnlockArea.lOffset = 0L; - UnlockArea.lRange = 0L; - res = DosSetFileLocks( pFile->h, &UnlockArea, &LockArea, LOCK_TIMEOUT, 0L ); - if( res == NO_ERROR ){ - newLocktype = EXCLUSIVE_LOCK; - }else{ - OSTRACE(( "OS/2 error-code = %d\n", res )); - getReadLock(pFile); - } - OSTRACE(( "LOCK %d acquire exclusive lock. res=%d\n", pFile->h, res )); - } - - /* If we are holding a PENDING lock that ought to be released, then - ** release it now. - */ - if( gotPendingLock && locktype==SHARED_LOCK ){ - int r; - LockArea.lOffset = 0L; - LockArea.lRange = 0L; - UnlockArea.lOffset = PENDING_BYTE; - UnlockArea.lRange = 1L; - r = DosSetFileLocks( pFile->h, &UnlockArea, &LockArea, LOCK_TIMEOUT, 0L ); - OSTRACE(( "LOCK %d unlocking pending/is shared. r=%d\n", pFile->h, r )); - } - - /* Update the state of the lock has held in the file descriptor then - ** return the appropriate result code. - */ - if( res == NO_ERROR ){ - rc = SQLITE_OK; - }else{ - OSTRACE(( "LOCK FAILED %d trying for %d but got %d\n", pFile->h, - locktype, newLocktype )); - rc = SQLITE_BUSY; - } - pFile->locktype = newLocktype; - OSTRACE(( "LOCK %d now %d\n", pFile->h, pFile->locktype )); - return rc; -} - -/* -** This routine checks if there is a RESERVED lock held on the specified -** file by this or any other process. If such a lock is held, return -** non-zero, otherwise zero. -*/ -static int os2CheckReservedLock( sqlite3_file *id, int *pOut ){ - int r = 0; - os2File *pFile = (os2File*)id; - assert( pFile!=0 ); - if( pFile->locktype>=RESERVED_LOCK ){ - r = 1; - OSTRACE(( "TEST WR-LOCK %d %d (local)\n", pFile->h, r )); - }else{ - FILELOCK LockArea, - UnlockArea; - APIRET rc = NO_ERROR; - memset(&LockArea, 0, sizeof(LockArea)); - memset(&UnlockArea, 0, sizeof(UnlockArea)); - LockArea.lOffset = RESERVED_BYTE; - LockArea.lRange = 1L; - UnlockArea.lOffset = 0L; - UnlockArea.lRange = 0L; - rc = DosSetFileLocks( pFile->h, &UnlockArea, &LockArea, LOCK_TIMEOUT, 0L ); - OSTRACE(( "TEST WR-LOCK %d lock reserved byte rc=%d\n", pFile->h, rc )); - if( rc == NO_ERROR ){ - APIRET rcu = NO_ERROR; /* return code for unlocking */ - LockArea.lOffset = 0L; - LockArea.lRange = 0L; - UnlockArea.lOffset = RESERVED_BYTE; - UnlockArea.lRange = 1L; - rcu = DosSetFileLocks( pFile->h, &UnlockArea, &LockArea, LOCK_TIMEOUT, 0L ); - OSTRACE(( "TEST WR-LOCK %d unlock reserved byte r=%d\n", pFile->h, rcu )); - } - r = !(rc == NO_ERROR); - OSTRACE(( "TEST WR-LOCK %d %d (remote)\n", pFile->h, r )); - } - *pOut = r; - return SQLITE_OK; -} - -/* -** Lower the locking level on file descriptor id to locktype. locktype -** must be either NO_LOCK or SHARED_LOCK. -** -** If the locking level of the file descriptor is already at or below -** the requested locking level, this routine is a no-op. -** -** It is not possible for this routine to fail if the second argument -** is NO_LOCK. If the second argument is SHARED_LOCK then this routine -** might return SQLITE_IOERR; -*/ -static int os2Unlock( sqlite3_file *id, int locktype ){ - int type; - os2File *pFile = (os2File*)id; - APIRET rc = SQLITE_OK; - APIRET res = NO_ERROR; - FILELOCK LockArea, - UnlockArea; - memset(&LockArea, 0, sizeof(LockArea)); - memset(&UnlockArea, 0, sizeof(UnlockArea)); - assert( pFile!=0 ); - assert( locktype<=SHARED_LOCK ); - OSTRACE(( "UNLOCK %d to %d was %d\n", pFile->h, locktype, pFile->locktype )); - type = pFile->locktype; - if( type>=EXCLUSIVE_LOCK ){ - LockArea.lOffset = 0L; - LockArea.lRange = 0L; - UnlockArea.lOffset = SHARED_FIRST; - UnlockArea.lRange = SHARED_SIZE; - res = DosSetFileLocks( pFile->h, &UnlockArea, &LockArea, LOCK_TIMEOUT, 0L ); - OSTRACE(( "UNLOCK %d exclusive lock res=%d\n", pFile->h, res )); - if( locktype==SHARED_LOCK && getReadLock(pFile) != NO_ERROR ){ - /* This should never happen. We should always be able to - ** reacquire the read lock */ - OSTRACE(( "UNLOCK %d to %d getReadLock() failed\n", pFile->h, locktype )); - rc = SQLITE_IOERR_UNLOCK; - } - } - if( type>=RESERVED_LOCK ){ - LockArea.lOffset = 0L; - LockArea.lRange = 0L; - UnlockArea.lOffset = RESERVED_BYTE; - UnlockArea.lRange = 1L; - res = DosSetFileLocks( pFile->h, &UnlockArea, &LockArea, LOCK_TIMEOUT, 0L ); - OSTRACE(( "UNLOCK %d reserved res=%d\n", pFile->h, res )); - } - if( locktype==NO_LOCK && type>=SHARED_LOCK ){ - res = unlockReadLock(pFile); - OSTRACE(( "UNLOCK %d is %d want %d res=%d\n", - pFile->h, type, locktype, res )); - } - if( type>=PENDING_LOCK ){ - LockArea.lOffset = 0L; - LockArea.lRange = 0L; - UnlockArea.lOffset = PENDING_BYTE; - UnlockArea.lRange = 1L; - res = DosSetFileLocks( pFile->h, &UnlockArea, &LockArea, LOCK_TIMEOUT, 0L ); - OSTRACE(( "UNLOCK %d pending res=%d\n", pFile->h, res )); - } - pFile->locktype = locktype; - OSTRACE(( "UNLOCK %d now %d\n", pFile->h, pFile->locktype )); - return rc; -} - -/* -** Control and query of the open file handle. -*/ -static int os2FileControl(sqlite3_file *id, int op, void *pArg){ - switch( op ){ - case SQLITE_FCNTL_LOCKSTATE: { - *(int*)pArg = ((os2File*)id)->locktype; - OSTRACE(( "FCNTL_LOCKSTATE %d lock=%d\n", - ((os2File*)id)->h, ((os2File*)id)->locktype )); - return SQLITE_OK; - } - case SQLITE_FCNTL_CHUNK_SIZE: { - ((os2File*)id)->szChunk = *(int*)pArg; - return SQLITE_OK; - } - case SQLITE_FCNTL_SIZE_HINT: { - sqlite3_int64 sz = *(sqlite3_int64*)pArg; - SimulateIOErrorBenign(1); - os2Truncate(id, sz); - SimulateIOErrorBenign(0); - return SQLITE_OK; - } - case SQLITE_FCNTL_SYNC_OMITTED: { - return SQLITE_OK; - } - } - return SQLITE_NOTFOUND; -} - -/* -** Return the sector size in bytes of the underlying block device for -** the specified file. This is almost always 512 bytes, but may be -** larger for some devices. -** -** SQLite code assumes this function cannot fail. It also assumes that -** if two files are created in the same file-system directory (i.e. -** a database and its journal file) that the sector size will be the -** same for both. -*/ -static int os2SectorSize(sqlite3_file *id){ - UNUSED_PARAMETER(id); - return SQLITE_DEFAULT_SECTOR_SIZE; -} - -/* -** Return a vector of device characteristics. -*/ -static int os2DeviceCharacteristics(sqlite3_file *id){ - UNUSED_PARAMETER(id); - return SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN; -} - - -/* -** Character set conversion objects used by conversion routines. -*/ -static UconvObject ucUtf8 = NULL; /* convert between UTF-8 and UCS-2 */ -static UconvObject uclCp = NULL; /* convert between local codepage and UCS-2 */ - -/* -** Helper function to initialize the conversion objects from and to UTF-8. -*/ -static void initUconvObjects( void ){ - if( UniCreateUconvObject( UTF_8, &ucUtf8 ) != ULS_SUCCESS ) - ucUtf8 = NULL; - if ( UniCreateUconvObject( (UniChar *)L"@path=yes", &uclCp ) != ULS_SUCCESS ) - uclCp = NULL; -} - -/* -** Helper function to free the conversion objects from and to UTF-8. -*/ -static void freeUconvObjects( void ){ - if ( ucUtf8 ) - UniFreeUconvObject( ucUtf8 ); - if ( uclCp ) - UniFreeUconvObject( uclCp ); - ucUtf8 = NULL; - uclCp = NULL; -} - -/* -** Helper function to convert UTF-8 filenames to local OS/2 codepage. -** The two-step process: first convert the incoming UTF-8 string -** into UCS-2 and then from UCS-2 to the current codepage. -** The returned char pointer has to be freed. -*/ -static char *convertUtf8PathToCp( const char *in ){ - UniChar tempPath[CCHMAXPATH]; - char *out = (char *)calloc( CCHMAXPATH, 1 ); - - if( !out ) - return NULL; - - if( !ucUtf8 || !uclCp ) - initUconvObjects(); - - /* determine string for the conversion of UTF-8 which is CP1208 */ - if( UniStrToUcs( ucUtf8, tempPath, (char *)in, CCHMAXPATH ) != ULS_SUCCESS ) - return out; /* if conversion fails, return the empty string */ - - /* conversion for current codepage which can be used for paths */ - UniStrFromUcs( uclCp, out, tempPath, CCHMAXPATH ); - - return out; -} - -/* -** Helper function to convert filenames from local codepage to UTF-8. -** The two-step process: first convert the incoming codepage-specific -** string into UCS-2 and then from UCS-2 to the codepage of UTF-8. -** The returned char pointer has to be freed. -** -** This function is non-static to be able to use this in shell.c and -** similar applications that take command line arguments. -*/ -char *convertCpPathToUtf8( const char *in ){ - UniChar tempPath[CCHMAXPATH]; - char *out = (char *)calloc( CCHMAXPATH, 1 ); - - if( !out ) - return NULL; - - if( !ucUtf8 || !uclCp ) - initUconvObjects(); - - /* conversion for current codepage which can be used for paths */ - if( UniStrToUcs( uclCp, tempPath, (char *)in, CCHMAXPATH ) != ULS_SUCCESS ) - return out; /* if conversion fails, return the empty string */ - - /* determine string for the conversion of UTF-8 which is CP1208 */ - UniStrFromUcs( ucUtf8, out, tempPath, CCHMAXPATH ); - - return out; -} - - -#ifndef SQLITE_OMIT_WAL - -/* -** Use main database file for interprocess locking. If un-defined -** a separate file is created for this purpose. The file will be -** used only to set file locks. There will be no data written to it. -*/ -#define SQLITE_OS2_NO_WAL_LOCK_FILE - -#if 0 -static void _ERR_TRACE( const char *fmt, ... ) { - va_list ap; - va_start(ap, fmt); - vfprintf(stderr, fmt, ap); - fflush(stderr); -} -#define ERR_TRACE(rc, msg) \ - if( (rc) != SQLITE_OK ) _ERR_TRACE msg; -#else -#define ERR_TRACE(rc, msg) -#endif - -/* -** Helper functions to obtain and relinquish the global mutex. The -** global mutex is used to protect os2ShmNodeList. -** -** Function os2ShmMutexHeld() is used to assert() that the global mutex -** is held when required. This function is only used as part of assert() -** statements. e.g. -** -** os2ShmEnterMutex() -** assert( os2ShmMutexHeld() ); -** os2ShmLeaveMutex() -*/ -static void os2ShmEnterMutex(void){ - sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)); -} -static void os2ShmLeaveMutex(void){ - sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)); -} -#ifdef SQLITE_DEBUG -static int os2ShmMutexHeld(void) { - return sqlite3_mutex_held(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)); -} -int GetCurrentProcessId(void) { - PPIB pib; - DosGetInfoBlocks(NULL, &pib); - return (int)pib->pib_ulpid; -} -#endif - -/* -** Object used to represent a the shared memory area for a single log file. -** When multiple threads all reference the same log-summary, each thread has -** its own os2File object, but they all point to a single instance of this -** object. In other words, each log-summary is opened only once per process. -** -** os2ShmMutexHeld() must be true when creating or destroying -** this object or while reading or writing the following fields: -** -** nRef -** pNext -** -** The following fields are read-only after the object is created: -** -** szRegion -** hLockFile -** shmBaseName -** -** Either os2ShmNode.mutex must be held or os2ShmNode.nRef==0 and -** os2ShmMutexHeld() is true when reading or writing any other field -** in this structure. -** -*/ -struct os2ShmNode { - sqlite3_mutex *mutex; /* Mutex to access this object */ - os2ShmNode *pNext; /* Next in list of all os2ShmNode objects */ - - int szRegion; /* Size of shared-memory regions */ - - int nRegion; /* Size of array apRegion */ - void **apRegion; /* Array of pointers to shared-memory regions */ - - int nRef; /* Number of os2ShmLink objects pointing to this */ - os2ShmLink *pFirst; /* First os2ShmLink object pointing to this */ - - HFILE hLockFile; /* File used for inter-process memory locking */ - char shmBaseName[1]; /* Name of the memory object !!! must last !!! */ -}; - - -/* -** Structure used internally by this VFS to record the state of an -** open shared memory connection. -** -** The following fields are initialized when this object is created and -** are read-only thereafter: -** -** os2Shm.pShmNode -** os2Shm.id -** -** All other fields are read/write. The os2Shm.pShmNode->mutex must be held -** while accessing any read/write fields. -*/ -struct os2ShmLink { - os2ShmNode *pShmNode; /* The underlying os2ShmNode object */ - os2ShmLink *pNext; /* Next os2Shm with the same os2ShmNode */ - u32 sharedMask; /* Mask of shared locks held */ - u32 exclMask; /* Mask of exclusive locks held */ -#ifdef SQLITE_DEBUG - u8 id; /* Id of this connection with its os2ShmNode */ -#endif -}; - - -/* -** A global list of all os2ShmNode objects. -** -** The os2ShmMutexHeld() must be true while reading or writing this list. -*/ -static os2ShmNode *os2ShmNodeList = NULL; - -/* -** Constants used for locking -*/ -#ifdef SQLITE_OS2_NO_WAL_LOCK_FILE -#define OS2_SHM_BASE (PENDING_BYTE + 0x10000) /* first lock byte */ -#else -#define OS2_SHM_BASE ((22+SQLITE_SHM_NLOCK)*4) /* first lock byte */ -#endif - -#define OS2_SHM_DMS (OS2_SHM_BASE+SQLITE_SHM_NLOCK) /* deadman switch */ - -/* -** Apply advisory locks for all n bytes beginning at ofst. -*/ -#define _SHM_UNLCK 1 /* no lock */ -#define _SHM_RDLCK 2 /* shared lock, no wait */ -#define _SHM_WRLCK 3 /* exlusive lock, no wait */ -#define _SHM_WRLCK_WAIT 4 /* exclusive lock, wait */ -static int os2ShmSystemLock( - os2ShmNode *pNode, /* Apply locks to this open shared-memory segment */ - int lockType, /* _SHM_UNLCK, _SHM_RDLCK, _SHM_WRLCK or _SHM_WRLCK_WAIT */ - int ofst, /* Offset to first byte to be locked/unlocked */ - int nByte /* Number of bytes to lock or unlock */ -){ - APIRET rc; - FILELOCK area; - ULONG mode, timeout; - - /* Access to the os2ShmNode object is serialized by the caller */ - assert( sqlite3_mutex_held(pNode->mutex) || pNode->nRef==0 ); - - mode = 1; /* shared lock */ - timeout = 0; /* no wait */ - area.lOffset = ofst; - area.lRange = nByte; - - switch( lockType ) { - case _SHM_WRLCK_WAIT: - timeout = (ULONG)-1; /* wait forever */ - case _SHM_WRLCK: - mode = 0; /* exclusive lock */ - case _SHM_RDLCK: - rc = DosSetFileLocks(pNode->hLockFile, - NULL, &area, timeout, mode); - break; - /* case _SHM_UNLCK: */ - default: - rc = DosSetFileLocks(pNode->hLockFile, - &area, NULL, 0, 0); - break; - } - - OSTRACE(("SHM-LOCK %d %s %s 0x%08lx\n", - pNode->hLockFile, - rc==SQLITE_OK ? "ok" : "failed", - lockType==_SHM_UNLCK ? "Unlock" : "Lock", - rc)); - - ERR_TRACE(rc, ("os2ShmSystemLock: %d %s\n", rc, pNode->shmBaseName)) - - return ( rc == 0 ) ? SQLITE_OK : SQLITE_BUSY; -} - -/* -** Find an os2ShmNode in global list or allocate a new one, if not found. -** -** This is not a VFS shared-memory method; it is a utility function called -** by VFS shared-memory methods. -*/ -static int os2OpenSharedMemory( os2File *fd, int szRegion ) { - os2ShmLink *pLink; - os2ShmNode *pNode; - int cbShmName, rc = SQLITE_OK; - char shmName[CCHMAXPATH + 30]; -#ifndef SQLITE_OS2_NO_WAL_LOCK_FILE - ULONG action; -#endif - - /* We need some additional space at the end to append the region number */ - cbShmName = sprintf(shmName, "\\SHAREMEM\\%s", fd->zFullPathCp ); - if( cbShmName >= CCHMAXPATH-8 ) - return SQLITE_IOERR_SHMOPEN; - - /* Replace colon in file name to form a valid shared memory name */ - shmName[10+1] = '!'; - - /* Allocate link object (we free it later in case of failure) */ - pLink = sqlite3_malloc( sizeof(*pLink) ); - if( !pLink ) - return SQLITE_NOMEM; - - /* Access node list */ - os2ShmEnterMutex(); - - /* Find node by it's shared memory base name */ - for( pNode = os2ShmNodeList; - pNode && stricmp(shmName, pNode->shmBaseName) != 0; - pNode = pNode->pNext ) ; - - /* Not found: allocate a new node */ - if( !pNode ) { - pNode = sqlite3_malloc( sizeof(*pNode) + cbShmName ); - if( pNode ) { - memset(pNode, 0, sizeof(*pNode) ); - pNode->szRegion = szRegion; - pNode->hLockFile = (HFILE)-1; - strcpy(pNode->shmBaseName, shmName); - -#ifdef SQLITE_OS2_NO_WAL_LOCK_FILE - if( DosDupHandle(fd->h, &pNode->hLockFile) != 0 ) { -#else - sprintf(shmName, "%s-lck", fd->zFullPathCp); - if( DosOpen((PSZ)shmName, &pNode->hLockFile, &action, 0, FILE_NORMAL, - OPEN_ACTION_OPEN_IF_EXISTS | OPEN_ACTION_CREATE_IF_NEW, - OPEN_ACCESS_READWRITE | OPEN_SHARE_DENYNONE | - OPEN_FLAGS_NOINHERIT | OPEN_FLAGS_FAIL_ON_ERROR, - NULL) != 0 ) { -#endif - sqlite3_free(pNode); - rc = SQLITE_IOERR; - } else { - pNode->mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_FAST); - if( !pNode->mutex ) { - sqlite3_free(pNode); - rc = SQLITE_NOMEM; - } - } - } else { - rc = SQLITE_NOMEM; - } - - if( rc == SQLITE_OK ) { - pNode->pNext = os2ShmNodeList; - os2ShmNodeList = pNode; - } else { - pNode = NULL; - } - } else if( pNode->szRegion != szRegion ) { - rc = SQLITE_IOERR_SHMSIZE; - pNode = NULL; - } - - if( pNode ) { - sqlite3_mutex_enter(pNode->mutex); - - memset(pLink, 0, sizeof(*pLink)); - - pLink->pShmNode = pNode; - pLink->pNext = pNode->pFirst; - pNode->pFirst = pLink; - pNode->nRef++; - - fd->pShmLink = pLink; - - sqlite3_mutex_leave(pNode->mutex); - - } else { - /* Error occured. Free our link object. */ - sqlite3_free(pLink); - } - - os2ShmLeaveMutex(); - - ERR_TRACE(rc, ("os2OpenSharedMemory: %d %s\n", rc, fd->zFullPathCp)) - - return rc; -} - -/* -** Purge the os2ShmNodeList list of all entries with nRef==0. -** -** This is not a VFS shared-memory method; it is a utility function called -** by VFS shared-memory methods. -*/ -static void os2PurgeShmNodes( int deleteFlag ) { - os2ShmNode *pNode; - os2ShmNode **ppNode; - - os2ShmEnterMutex(); - - ppNode = &os2ShmNodeList; - - while( *ppNode ) { - pNode = *ppNode; - - if( pNode->nRef == 0 ) { - *ppNode = pNode->pNext; - - if( pNode->apRegion ) { - /* Prevent other processes from resizing the shared memory */ - os2ShmSystemLock(pNode, _SHM_WRLCK_WAIT, OS2_SHM_DMS, 1); - - while( pNode->nRegion-- ) { -#ifdef SQLITE_DEBUG - int rc = -#endif - DosFreeMem(pNode->apRegion[pNode->nRegion]); - - OSTRACE(("SHM-PURGE pid-%d unmap region=%d %s\n", - (int)GetCurrentProcessId(), pNode->nRegion, - rc == 0 ? "ok" : "failed")); - } - - /* Allow other processes to resize the shared memory */ - os2ShmSystemLock(pNode, _SHM_UNLCK, OS2_SHM_DMS, 1); - - sqlite3_free(pNode->apRegion); - } - - DosClose(pNode->hLockFile); - -#ifndef SQLITE_OS2_NO_WAL_LOCK_FILE - if( deleteFlag ) { - char fileName[CCHMAXPATH]; - /* Skip "\\SHAREMEM\\" */ - sprintf(fileName, "%s-lck", pNode->shmBaseName + 10); - /* restore colon */ - fileName[1] = ':'; - - DosForceDelete(fileName); - } -#endif - - sqlite3_mutex_free(pNode->mutex); - - sqlite3_free(pNode); - - } else { - ppNode = &pNode->pNext; - } - } - - os2ShmLeaveMutex(); -} - -/* -** This function is called to obtain a pointer to region iRegion of the -** shared-memory associated with the database file id. Shared-memory regions -** are numbered starting from zero. Each shared-memory region is szRegion -** bytes in size. -** -** If an error occurs, an error code is returned and *pp is set to NULL. -** -** Otherwise, if the bExtend parameter is 0 and the requested shared-memory -** region has not been allocated (by any client, including one running in a -** separate process), then *pp is set to NULL and SQLITE_OK returned. If -** bExtend is non-zero and the requested shared-memory region has not yet -** been allocated, it is allocated by this function. -** -** If the shared-memory region has already been allocated or is allocated by -** this call as described above, then it is mapped into this processes -** address space (if it is not already), *pp is set to point to the mapped -** memory and SQLITE_OK returned. -*/ -static int os2ShmMap( - sqlite3_file *id, /* Handle open on database file */ - int iRegion, /* Region to retrieve */ - int szRegion, /* Size of regions */ - int bExtend, /* True to extend block if necessary */ - void volatile **pp /* OUT: Mapped memory */ -){ - PVOID pvTemp; - void **apRegion; - os2ShmNode *pNode; - int n, rc = SQLITE_OK; - char shmName[CCHMAXPATH]; - os2File *pFile = (os2File*)id; - - *pp = NULL; - - if( !pFile->pShmLink ) - rc = os2OpenSharedMemory( pFile, szRegion ); - - if( rc == SQLITE_OK ) { - pNode = pFile->pShmLink->pShmNode ; - - sqlite3_mutex_enter(pNode->mutex); - - assert( szRegion==pNode->szRegion ); - - /* Unmapped region ? */ - if( iRegion >= pNode->nRegion ) { - /* Prevent other processes from resizing the shared memory */ - os2ShmSystemLock(pNode, _SHM_WRLCK_WAIT, OS2_SHM_DMS, 1); - - apRegion = sqlite3_realloc( - pNode->apRegion, (iRegion + 1) * sizeof(apRegion[0])); - - if( apRegion ) { - pNode->apRegion = apRegion; - - while( pNode->nRegion <= iRegion ) { - sprintf(shmName, "%s-%u", - pNode->shmBaseName, pNode->nRegion); - - if( DosGetNamedSharedMem(&pvTemp, (PSZ)shmName, - PAG_READ | PAG_WRITE) != NO_ERROR ) { - if( !bExtend ) - break; - - if( DosAllocSharedMem(&pvTemp, (PSZ)shmName, szRegion, - PAG_READ | PAG_WRITE | PAG_COMMIT | OBJ_ANY) != NO_ERROR && - DosAllocSharedMem(&pvTemp, (PSZ)shmName, szRegion, - PAG_READ | PAG_WRITE | PAG_COMMIT) != NO_ERROR ) { - rc = SQLITE_NOMEM; - break; - } - } - - apRegion[pNode->nRegion++] = pvTemp; - } - - /* zero out remaining entries */ - for( n = pNode->nRegion; n <= iRegion; n++ ) - pNode->apRegion[n] = NULL; - - /* Return this region (maybe zero) */ - *pp = pNode->apRegion[iRegion]; - } else { - rc = SQLITE_NOMEM; - } - - /* Allow other processes to resize the shared memory */ - os2ShmSystemLock(pNode, _SHM_UNLCK, OS2_SHM_DMS, 1); - - } else { - /* Region has been mapped previously */ - *pp = pNode->apRegion[iRegion]; - } - - sqlite3_mutex_leave(pNode->mutex); - } - - ERR_TRACE(rc, ("os2ShmMap: %s iRgn = %d, szRgn = %d, bExt = %d : %d\n", - pFile->zFullPathCp, iRegion, szRegion, bExtend, rc)) - - return rc; -} - -/* -** Close a connection to shared-memory. Delete the underlying -** storage if deleteFlag is true. -** -** If there is no shared memory associated with the connection then this -** routine is a harmless no-op. -*/ -static int os2ShmUnmap( - sqlite3_file *id, /* The underlying database file */ - int deleteFlag /* Delete shared-memory if true */ -){ - os2File *pFile = (os2File*)id; - os2ShmLink *pLink = pFile->pShmLink; - - if( pLink ) { - int nRef = -1; - os2ShmLink **ppLink; - os2ShmNode *pNode = pLink->pShmNode; - - sqlite3_mutex_enter(pNode->mutex); - - for( ppLink = &pNode->pFirst; - *ppLink && *ppLink != pLink; - ppLink = &(*ppLink)->pNext ) ; - - assert(*ppLink); - - if( *ppLink ) { - *ppLink = pLink->pNext; - nRef = --pNode->nRef; - } else { - ERR_TRACE(1, ("os2ShmUnmap: link not found ! %s\n", - pNode->shmBaseName)) - } - - pFile->pShmLink = NULL; - sqlite3_free(pLink); - - sqlite3_mutex_leave(pNode->mutex); - - if( nRef == 0 ) - os2PurgeShmNodes( deleteFlag ); - } - - return SQLITE_OK; -} - -/* -** Change the lock state for a shared-memory segment. -** -** Note that the relationship between SHAREd and EXCLUSIVE locks is a little -** different here than in posix. In xShmLock(), one can go from unlocked -** to shared and back or from unlocked to exclusive and back. But one may -** not go from shared to exclusive or from exclusive to shared. -*/ -static int os2ShmLock( - sqlite3_file *id, /* Database file holding the shared memory */ - int ofst, /* First lock to acquire or release */ - int n, /* Number of locks to acquire or release */ - int flags /* What to do with the lock */ -){ - u32 mask; /* Mask of locks to take or release */ - int rc = SQLITE_OK; /* Result code */ - os2File *pFile = (os2File*)id; - os2ShmLink *p = pFile->pShmLink; /* The shared memory being locked */ - os2ShmLink *pX; /* For looping over all siblings */ - os2ShmNode *pShmNode = p->pShmNode; /* Our node */ - - assert( ofst>=0 && ofst+n<=SQLITE_SHM_NLOCK ); - assert( n>=1 ); - assert( flags==(SQLITE_SHM_LOCK | SQLITE_SHM_SHARED) - || flags==(SQLITE_SHM_LOCK | SQLITE_SHM_EXCLUSIVE) - || flags==(SQLITE_SHM_UNLOCK | SQLITE_SHM_SHARED) - || flags==(SQLITE_SHM_UNLOCK | SQLITE_SHM_EXCLUSIVE) ); - assert( n==1 || (flags & SQLITE_SHM_EXCLUSIVE)!=0 ); - - mask = (u32)((1U<<(ofst+n)) - (1U<1 || mask==(1<mutex); - - if( flags & SQLITE_SHM_UNLOCK ){ - u32 allMask = 0; /* Mask of locks held by siblings */ - - /* See if any siblings hold this same lock */ - for(pX=pShmNode->pFirst; pX; pX=pX->pNext){ - if( pX==p ) continue; - assert( (pX->exclMask & (p->exclMask|p->sharedMask))==0 ); - allMask |= pX->sharedMask; - } - - /* Unlock the system-level locks */ - if( (mask & allMask)==0 ){ - rc = os2ShmSystemLock(pShmNode, _SHM_UNLCK, ofst+OS2_SHM_BASE, n); - }else{ - rc = SQLITE_OK; - } - - /* Undo the local locks */ - if( rc==SQLITE_OK ){ - p->exclMask &= ~mask; - p->sharedMask &= ~mask; - } - }else if( flags & SQLITE_SHM_SHARED ){ - u32 allShared = 0; /* Union of locks held by connections other than "p" */ - - /* Find out which shared locks are already held by sibling connections. - ** If any sibling already holds an exclusive lock, go ahead and return - ** SQLITE_BUSY. - */ - for(pX=pShmNode->pFirst; pX; pX=pX->pNext){ - if( (pX->exclMask & mask)!=0 ){ - rc = SQLITE_BUSY; - break; - } - allShared |= pX->sharedMask; - } - - /* Get shared locks at the system level, if necessary */ - if( rc==SQLITE_OK ){ - if( (allShared & mask)==0 ){ - rc = os2ShmSystemLock(pShmNode, _SHM_RDLCK, ofst+OS2_SHM_BASE, n); - }else{ - rc = SQLITE_OK; - } - } - - /* Get the local shared locks */ - if( rc==SQLITE_OK ){ - p->sharedMask |= mask; - } - }else{ - /* Make sure no sibling connections hold locks that will block this - ** lock. If any do, return SQLITE_BUSY right away. - */ - for(pX=pShmNode->pFirst; pX; pX=pX->pNext){ - if( (pX->exclMask & mask)!=0 || (pX->sharedMask & mask)!=0 ){ - rc = SQLITE_BUSY; - break; - } - } - - /* Get the exclusive locks at the system level. Then if successful - ** also mark the local connection as being locked. - */ - if( rc==SQLITE_OK ){ - rc = os2ShmSystemLock(pShmNode, _SHM_WRLCK, ofst+OS2_SHM_BASE, n); - if( rc==SQLITE_OK ){ - assert( (p->sharedMask & mask)==0 ); - p->exclMask |= mask; - } - } - } - - sqlite3_mutex_leave(pShmNode->mutex); - - OSTRACE(("SHM-LOCK shmid-%d, pid-%d got %03x,%03x %s\n", - p->id, (int)GetCurrentProcessId(), p->sharedMask, p->exclMask, - rc ? "failed" : "ok")); - - ERR_TRACE(rc, ("os2ShmLock: ofst = %d, n = %d, flags = 0x%x -> %d \n", - ofst, n, flags, rc)) - - return rc; -} - -/* -** Implement a memory barrier or memory fence on shared memory. -** -** All loads and stores begun before the barrier must complete before -** any load or store begun after the barrier. -*/ -static void os2ShmBarrier( - sqlite3_file *id /* Database file holding the shared memory */ -){ - UNUSED_PARAMETER(id); - os2ShmEnterMutex(); - os2ShmLeaveMutex(); -} - -#else -# define os2ShmMap 0 -# define os2ShmLock 0 -# define os2ShmBarrier 0 -# define os2ShmUnmap 0 -#endif /* #ifndef SQLITE_OMIT_WAL */ - - -/* -** This vector defines all the methods that can operate on an -** sqlite3_file for os2. -*/ -static const sqlite3_io_methods os2IoMethod = { - 2, /* iVersion */ - os2Close, /* xClose */ - os2Read, /* xRead */ - os2Write, /* xWrite */ - os2Truncate, /* xTruncate */ - os2Sync, /* xSync */ - os2FileSize, /* xFileSize */ - os2Lock, /* xLock */ - os2Unlock, /* xUnlock */ - os2CheckReservedLock, /* xCheckReservedLock */ - os2FileControl, /* xFileControl */ - os2SectorSize, /* xSectorSize */ - os2DeviceCharacteristics, /* xDeviceCharacteristics */ - os2ShmMap, /* xShmMap */ - os2ShmLock, /* xShmLock */ - os2ShmBarrier, /* xShmBarrier */ - os2ShmUnmap /* xShmUnmap */ -}; - - -/*************************************************************************** -** Here ends the I/O methods that form the sqlite3_io_methods object. -** -** The next block of code implements the VFS methods. -****************************************************************************/ - -/* -** Create a temporary file name in zBuf. zBuf must be big enough to -** hold at pVfs->mxPathname characters. -*/ -static int getTempname(int nBuf, char *zBuf ){ - static const char zChars[] = - "abcdefghijklmnopqrstuvwxyz" - "ABCDEFGHIJKLMNOPQRSTUVWXYZ" - "0123456789"; - int i, j; - PSZ zTempPathCp; - char zTempPath[CCHMAXPATH]; - ULONG ulDriveNum, ulDriveMap; - - /* It's odd to simulate an io-error here, but really this is just - ** using the io-error infrastructure to test that SQLite handles this - ** function failing. - */ - SimulateIOError( return SQLITE_IOERR ); - - if( sqlite3_temp_directory ) { - sqlite3_snprintf(CCHMAXPATH-30, zTempPath, "%s", sqlite3_temp_directory); - } else if( DosScanEnv( (PSZ)"TEMP", &zTempPathCp ) == NO_ERROR || - DosScanEnv( (PSZ)"TMP", &zTempPathCp ) == NO_ERROR || - DosScanEnv( (PSZ)"TMPDIR", &zTempPathCp ) == NO_ERROR ) { - char *zTempPathUTF = convertCpPathToUtf8( (char *)zTempPathCp ); - sqlite3_snprintf(CCHMAXPATH-30, zTempPath, "%s", zTempPathUTF); - free( zTempPathUTF ); - } else if( DosQueryCurrentDisk( &ulDriveNum, &ulDriveMap ) == NO_ERROR ) { - zTempPath[0] = (char)('A' + ulDriveNum - 1); - zTempPath[1] = ':'; - zTempPath[2] = '\0'; - } else { - zTempPath[0] = '\0'; - } - - /* Strip off a trailing slashes or backslashes, otherwise we would get * - * multiple (back)slashes which causes DosOpen() to fail. * - * Trailing spaces are not allowed, either. */ - j = sqlite3Strlen30(zTempPath); - while( j > 0 && ( zTempPath[j-1] == '\\' || zTempPath[j-1] == '/' || - zTempPath[j-1] == ' ' ) ){ - j--; - } - zTempPath[j] = '\0'; - - /* We use 20 bytes to randomize the name */ - sqlite3_snprintf(nBuf-22, zBuf, - "%s\\"SQLITE_TEMP_FILE_PREFIX, zTempPath); - j = sqlite3Strlen30(zBuf); - sqlite3_randomness( 20, &zBuf[j] ); - for( i = 0; i < 20; i++, j++ ){ - zBuf[j] = zChars[ ((unsigned char)zBuf[j])%(sizeof(zChars)-1) ]; - } - zBuf[j] = 0; - - OSTRACE(( "TEMP FILENAME: %s\n", zBuf )); - return SQLITE_OK; -} - - -/* -** Turn a relative pathname into a full pathname. Write the full -** pathname into zFull[]. zFull[] will be at least pVfs->mxPathname -** bytes in size. -*/ -static int os2FullPathname( - sqlite3_vfs *pVfs, /* Pointer to vfs object */ - const char *zRelative, /* Possibly relative input path */ - int nFull, /* Size of output buffer in bytes */ - char *zFull /* Output buffer */ -){ - char *zRelativeCp = convertUtf8PathToCp( zRelative ); - char zFullCp[CCHMAXPATH] = "\0"; - char *zFullUTF; - APIRET rc = DosQueryPathInfo( (PSZ)zRelativeCp, FIL_QUERYFULLNAME, - zFullCp, CCHMAXPATH ); - free( zRelativeCp ); - zFullUTF = convertCpPathToUtf8( zFullCp ); - sqlite3_snprintf( nFull, zFull, zFullUTF ); - free( zFullUTF ); - return rc == NO_ERROR ? SQLITE_OK : SQLITE_IOERR; -} - - -/* -** Open a file. -*/ -static int os2Open( - sqlite3_vfs *pVfs, /* Not used */ - const char *zName, /* Name of the file (UTF-8) */ - sqlite3_file *id, /* Write the SQLite file handle here */ - int flags, /* Open mode flags */ - int *pOutFlags /* Status return flags */ -){ - HFILE h; - ULONG ulOpenFlags = 0; - ULONG ulOpenMode = 0; - ULONG ulAction = 0; - ULONG rc; - os2File *pFile = (os2File*)id; - const char *zUtf8Name = zName; - char *zNameCp; - char zTmpname[CCHMAXPATH]; - - int isExclusive = (flags & SQLITE_OPEN_EXCLUSIVE); - int isCreate = (flags & SQLITE_OPEN_CREATE); - int isReadWrite = (flags & SQLITE_OPEN_READWRITE); -#ifndef NDEBUG - int isDelete = (flags & SQLITE_OPEN_DELETEONCLOSE); - int isReadonly = (flags & SQLITE_OPEN_READONLY); - int eType = (flags & 0xFFFFFF00); - int isOpenJournal = (isCreate && ( - eType==SQLITE_OPEN_MASTER_JOURNAL - || eType==SQLITE_OPEN_MAIN_JOURNAL - || eType==SQLITE_OPEN_WAL - )); -#endif - - UNUSED_PARAMETER(pVfs); - assert( id!=0 ); - - /* Check the following statements are true: - ** - ** (a) Exactly one of the READWRITE and READONLY flags must be set, and - ** (b) if CREATE is set, then READWRITE must also be set, and - ** (c) if EXCLUSIVE is set, then CREATE must also be set. - ** (d) if DELETEONCLOSE is set, then CREATE must also be set. - */ - assert((isReadonly==0 || isReadWrite==0) && (isReadWrite || isReadonly)); - assert(isCreate==0 || isReadWrite); - assert(isExclusive==0 || isCreate); - assert(isDelete==0 || isCreate); - - /* The main DB, main journal, WAL file and master journal are never - ** automatically deleted. Nor are they ever temporary files. */ - assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_DB ); - assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_JOURNAL ); - assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MASTER_JOURNAL ); - assert( (!isDelete && zName) || eType!=SQLITE_OPEN_WAL ); - - /* Assert that the upper layer has set one of the "file-type" flags. */ - assert( eType==SQLITE_OPEN_MAIN_DB || eType==SQLITE_OPEN_TEMP_DB - || eType==SQLITE_OPEN_MAIN_JOURNAL || eType==SQLITE_OPEN_TEMP_JOURNAL - || eType==SQLITE_OPEN_SUBJOURNAL || eType==SQLITE_OPEN_MASTER_JOURNAL - || eType==SQLITE_OPEN_TRANSIENT_DB || eType==SQLITE_OPEN_WAL - ); - - memset( pFile, 0, sizeof(*pFile) ); - pFile->h = (HFILE)-1; - - /* If the second argument to this function is NULL, generate a - ** temporary file name to use - */ - if( !zUtf8Name ){ - assert(isDelete && !isOpenJournal); - rc = getTempname(CCHMAXPATH, zTmpname); - if( rc!=SQLITE_OK ){ - return rc; - } - zUtf8Name = zTmpname; - } - - if( isReadWrite ){ - ulOpenMode |= OPEN_ACCESS_READWRITE; - }else{ - ulOpenMode |= OPEN_ACCESS_READONLY; - } - - /* Open in random access mode for possibly better speed. Allow full - ** sharing because file locks will provide exclusive access when needed. - ** The handle should not be inherited by child processes and we don't - ** want popups from the critical error handler. - */ - ulOpenMode |= OPEN_FLAGS_RANDOM | OPEN_SHARE_DENYNONE | - OPEN_FLAGS_NOINHERIT | OPEN_FLAGS_FAIL_ON_ERROR; - - /* SQLITE_OPEN_EXCLUSIVE is used to make sure that a new file is - ** created. SQLite doesn't use it to indicate "exclusive access" - ** as it is usually understood. - */ - if( isExclusive ){ - /* Creates a new file, only if it does not already exist. */ - /* If the file exists, it fails. */ - ulOpenFlags |= OPEN_ACTION_CREATE_IF_NEW | OPEN_ACTION_FAIL_IF_EXISTS; - }else if( isCreate ){ - /* Open existing file, or create if it doesn't exist */ - ulOpenFlags |= OPEN_ACTION_CREATE_IF_NEW | OPEN_ACTION_OPEN_IF_EXISTS; - }else{ - /* Opens a file, only if it exists. */ - ulOpenFlags |= OPEN_ACTION_FAIL_IF_NEW | OPEN_ACTION_OPEN_IF_EXISTS; - } - - zNameCp = convertUtf8PathToCp( zUtf8Name ); - rc = DosOpen( (PSZ)zNameCp, - &h, - &ulAction, - 0L, - FILE_NORMAL, - ulOpenFlags, - ulOpenMode, - (PEAOP2)NULL ); - free( zNameCp ); - - if( rc != NO_ERROR ){ - OSTRACE(( "OPEN Invalid handle rc=%d: zName=%s, ulAction=%#lx, ulFlags=%#lx, ulMode=%#lx\n", - rc, zUtf8Name, ulAction, ulOpenFlags, ulOpenMode )); - - if( isReadWrite ){ - return os2Open( pVfs, zName, id, - ((flags|SQLITE_OPEN_READONLY)&~(SQLITE_OPEN_CREATE|SQLITE_OPEN_READWRITE)), - pOutFlags ); - }else{ - return SQLITE_CANTOPEN; - } - } - - if( pOutFlags ){ - *pOutFlags = isReadWrite ? SQLITE_OPEN_READWRITE : SQLITE_OPEN_READONLY; - } - - os2FullPathname( pVfs, zUtf8Name, sizeof( zTmpname ), zTmpname ); - pFile->zFullPathCp = convertUtf8PathToCp( zTmpname ); - pFile->pMethod = &os2IoMethod; - pFile->flags = flags; - pFile->h = h; - - OpenCounter(+1); - OSTRACE(( "OPEN %d pOutFlags=%d\n", pFile->h, pOutFlags )); - return SQLITE_OK; -} - -/* -** Delete the named file. -*/ -static int os2Delete( - sqlite3_vfs *pVfs, /* Not used on os2 */ - const char *zFilename, /* Name of file to delete */ - int syncDir /* Not used on os2 */ -){ - APIRET rc; - char *zFilenameCp; - SimulateIOError( return SQLITE_IOERR_DELETE ); - zFilenameCp = convertUtf8PathToCp( zFilename ); - rc = DosDelete( (PSZ)zFilenameCp ); - free( zFilenameCp ); - OSTRACE(( "DELETE \"%s\"\n", zFilename )); - return (rc == NO_ERROR || - rc == ERROR_FILE_NOT_FOUND || - rc == ERROR_PATH_NOT_FOUND ) ? SQLITE_OK : SQLITE_IOERR_DELETE; -} - -/* -** Check the existance and status of a file. -*/ -static int os2Access( - sqlite3_vfs *pVfs, /* Not used on os2 */ - const char *zFilename, /* Name of file to check */ - int flags, /* Type of test to make on this file */ - int *pOut /* Write results here */ -){ - APIRET rc; - FILESTATUS3 fsts3ConfigInfo; - char *zFilenameCp; - - UNUSED_PARAMETER(pVfs); - SimulateIOError( return SQLITE_IOERR_ACCESS; ); - - zFilenameCp = convertUtf8PathToCp( zFilename ); - rc = DosQueryPathInfo( (PSZ)zFilenameCp, FIL_STANDARD, - &fsts3ConfigInfo, sizeof(FILESTATUS3) ); - free( zFilenameCp ); - OSTRACE(( "ACCESS fsts3ConfigInfo.attrFile=%d flags=%d rc=%d\n", - fsts3ConfigInfo.attrFile, flags, rc )); - - switch( flags ){ - case SQLITE_ACCESS_EXISTS: - /* For an SQLITE_ACCESS_EXISTS query, treat a zero-length file - ** as if it does not exist. - */ - if( fsts3ConfigInfo.cbFile == 0 ) - rc = ERROR_FILE_NOT_FOUND; - break; - case SQLITE_ACCESS_READ: - break; - case SQLITE_ACCESS_READWRITE: - if( fsts3ConfigInfo.attrFile & FILE_READONLY ) - rc = ERROR_ACCESS_DENIED; - break; - default: - rc = ERROR_FILE_NOT_FOUND; - assert( !"Invalid flags argument" ); - } - - *pOut = (rc == NO_ERROR); - OSTRACE(( "ACCESS %s flags %d: rc=%d\n", zFilename, flags, *pOut )); - - return SQLITE_OK; -} - - -#ifndef SQLITE_OMIT_LOAD_EXTENSION -/* -** Interfaces for opening a shared library, finding entry points -** within the shared library, and closing the shared library. -*/ -/* -** Interfaces for opening a shared library, finding entry points -** within the shared library, and closing the shared library. -*/ -static void *os2DlOpen(sqlite3_vfs *pVfs, const char *zFilename){ - HMODULE hmod; - APIRET rc; - char *zFilenameCp = convertUtf8PathToCp(zFilename); - rc = DosLoadModule(NULL, 0, (PSZ)zFilenameCp, &hmod); - free(zFilenameCp); - return rc != NO_ERROR ? 0 : (void*)hmod; -} -/* -** A no-op since the error code is returned on the DosLoadModule call. -** os2Dlopen returns zero if DosLoadModule is not successful. -*/ -static void os2DlError(sqlite3_vfs *pVfs, int nBuf, char *zBufOut){ -/* no-op */ -} -static void (*os2DlSym(sqlite3_vfs *pVfs, void *pHandle, const char *zSymbol))(void){ - PFN pfn; - APIRET rc; - rc = DosQueryProcAddr((HMODULE)pHandle, 0L, (PSZ)zSymbol, &pfn); - if( rc != NO_ERROR ){ - /* if the symbol itself was not found, search again for the same - * symbol with an extra underscore, that might be needed depending - * on the calling convention */ - char _zSymbol[256] = "_"; - strncat(_zSymbol, zSymbol, 254); - rc = DosQueryProcAddr((HMODULE)pHandle, 0L, (PSZ)_zSymbol, &pfn); - } - return rc != NO_ERROR ? 0 : (void(*)(void))pfn; -} -static void os2DlClose(sqlite3_vfs *pVfs, void *pHandle){ - DosFreeModule((HMODULE)pHandle); -} -#else /* if SQLITE_OMIT_LOAD_EXTENSION is defined: */ - #define os2DlOpen 0 - #define os2DlError 0 - #define os2DlSym 0 - #define os2DlClose 0 -#endif - - -/* -** Write up to nBuf bytes of randomness into zBuf. -*/ -static int os2Randomness(sqlite3_vfs *pVfs, int nBuf, char *zBuf ){ - int n = 0; -#if defined(SQLITE_TEST) - n = nBuf; - memset(zBuf, 0, nBuf); -#else - int i; - PPIB ppib; - PTIB ptib; - DATETIME dt; - static unsigned c = 0; - /* Ordered by variation probability */ - static ULONG svIdx[6] = { QSV_MS_COUNT, QSV_TIME_LOW, - QSV_MAXPRMEM, QSV_MAXSHMEM, - QSV_TOTAVAILMEM, QSV_TOTRESMEM }; - - /* 8 bytes; timezone and weekday don't increase the randomness much */ - if( (int)sizeof(dt)-3 <= nBuf - n ){ - c += 0x0100; - DosGetDateTime(&dt); - dt.year = (USHORT)((dt.year - 1900) | c); - memcpy(&zBuf[n], &dt, sizeof(dt)-3); - n += sizeof(dt)-3; - } - - /* 4 bytes; PIDs and TIDs are 16 bit internally, so combine them */ - if( (int)sizeof(ULONG) <= nBuf - n ){ - DosGetInfoBlocks(&ptib, &ppib); - *(PULONG)&zBuf[n] = MAKELONG(ppib->pib_ulpid, - ptib->tib_ptib2->tib2_ultid); - n += sizeof(ULONG); - } - - /* Up to 6 * 4 bytes; variables depend on the system state */ - for( i = 0; i < 6 && (int)sizeof(ULONG) <= nBuf - n; i++ ){ - DosQuerySysInfo(svIdx[i], svIdx[i], - (PULONG)&zBuf[n], sizeof(ULONG)); - n += sizeof(ULONG); - } -#endif - - return n; -} - -/* -** Sleep for a little while. Return the amount of time slept. -** The argument is the number of microseconds we want to sleep. -** The return value is the number of microseconds of sleep actually -** requested from the underlying operating system, a number which -** might be greater than or equal to the argument, but not less -** than the argument. -*/ -static int os2Sleep( sqlite3_vfs *pVfs, int microsec ){ - DosSleep( (microsec/1000) ); - return microsec; -} - -/* -** The following variable, if set to a non-zero value, becomes the result -** returned from sqlite3OsCurrentTime(). This is used for testing. -*/ -#ifdef SQLITE_TEST -int sqlite3_current_time = 0; -#endif - -/* -** Find the current time (in Universal Coordinated Time). Write into *piNow -** the current time and date as a Julian Day number times 86_400_000. In -** other words, write into *piNow the number of milliseconds since the Julian -** epoch of noon in Greenwich on November 24, 4714 B.C according to the -** proleptic Gregorian calendar. -** -** On success, return 0. Return 1 if the time and date cannot be found. -*/ -static int os2CurrentTimeInt64(sqlite3_vfs *pVfs, sqlite3_int64 *piNow){ -#ifdef SQLITE_TEST - static const sqlite3_int64 unixEpoch = 24405875*(sqlite3_int64)8640000; -#endif - int year, month, datepart, timepart; - - DATETIME dt; - DosGetDateTime( &dt ); - - year = dt.year; - month = dt.month; - - /* Calculations from http://www.astro.keele.ac.uk/~rno/Astronomy/hjd.html - ** http://www.astro.keele.ac.uk/~rno/Astronomy/hjd-0.1.c - ** Calculate the Julian days - */ - datepart = (int)dt.day - 32076 + - 1461*(year + 4800 + (month - 14)/12)/4 + - 367*(month - 2 - (month - 14)/12*12)/12 - - 3*((year + 4900 + (month - 14)/12)/100)/4; - - /* Time in milliseconds, hours to noon added */ - timepart = 12*3600*1000 + dt.hundredths*10 + dt.seconds*1000 + - ((int)dt.minutes + dt.timezone)*60*1000 + dt.hours*3600*1000; - - *piNow = (sqlite3_int64)datepart*86400*1000 + timepart; - -#ifdef SQLITE_TEST - if( sqlite3_current_time ){ - *piNow = 1000*(sqlite3_int64)sqlite3_current_time + unixEpoch; - } -#endif - - UNUSED_PARAMETER(pVfs); - return 0; -} - -/* -** Find the current time (in Universal Coordinated Time). Write the -** current time and date as a Julian Day number into *prNow and -** return 0. Return 1 if the time and date cannot be found. -*/ -static int os2CurrentTime( sqlite3_vfs *pVfs, double *prNow ){ - int rc; - sqlite3_int64 i; - rc = os2CurrentTimeInt64(pVfs, &i); - if( !rc ){ - *prNow = i/86400000.0; - } - return rc; -} - -/* -** The idea is that this function works like a combination of -** GetLastError() and FormatMessage() on windows (or errno and -** strerror_r() on unix). After an error is returned by an OS -** function, SQLite calls this function with zBuf pointing to -** a buffer of nBuf bytes. The OS layer should populate the -** buffer with a nul-terminated UTF-8 encoded error message -** describing the last IO error to have occurred within the calling -** thread. -** -** If the error message is too large for the supplied buffer, -** it should be truncated. The return value of xGetLastError -** is zero if the error message fits in the buffer, or non-zero -** otherwise (if the message was truncated). If non-zero is returned, -** then it is not necessary to include the nul-terminator character -** in the output buffer. -** -** Not supplying an error message will have no adverse effect -** on SQLite. It is fine to have an implementation that never -** returns an error message: -** -** int xGetLastError(sqlite3_vfs *pVfs, int nBuf, char *zBuf){ -** assert(zBuf[0]=='\0'); -** return 0; -** } -** -** However if an error message is supplied, it will be incorporated -** by sqlite into the error message available to the user using -** sqlite3_errmsg(), possibly making IO errors easier to debug. -*/ -static int os2GetLastError(sqlite3_vfs *pVfs, int nBuf, char *zBuf){ - assert(zBuf[0]=='\0'); - return 0; -} - -/* -** Initialize and deinitialize the operating system interface. -*/ -int sqlite3_os_init(void){ - static sqlite3_vfs os2Vfs = { - 3, /* iVersion */ - sizeof(os2File), /* szOsFile */ - CCHMAXPATH, /* mxPathname */ - 0, /* pNext */ - "os2", /* zName */ - 0, /* pAppData */ - - os2Open, /* xOpen */ - os2Delete, /* xDelete */ - os2Access, /* xAccess */ - os2FullPathname, /* xFullPathname */ - os2DlOpen, /* xDlOpen */ - os2DlError, /* xDlError */ - os2DlSym, /* xDlSym */ - os2DlClose, /* xDlClose */ - os2Randomness, /* xRandomness */ - os2Sleep, /* xSleep */ - os2CurrentTime, /* xCurrentTime */ - os2GetLastError, /* xGetLastError */ - os2CurrentTimeInt64, /* xCurrentTimeInt64 */ - 0, /* xSetSystemCall */ - 0, /* xGetSystemCall */ - 0 /* xNextSystemCall */ - }; - sqlite3_vfs_register(&os2Vfs, 1); - initUconvObjects(); -/* sqlite3OSTrace = 1; */ - return SQLITE_OK; -} -int sqlite3_os_end(void){ - freeUconvObjects(); - return SQLITE_OK; -} - -#endif /* SQLITE_OS_OS2 */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/os_unix.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/os_unix.c deleted file mode 100644 index 6f12c554e0..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/os_unix.c +++ /dev/null @@ -1,6821 +0,0 @@ -/* -** 2004 May 22 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This file contains the VFS implementation for unix-like operating systems -** include Linux, MacOSX, *BSD, QNX, VxWorks, AIX, HPUX, and others. -** -** There are actually several different VFS implementations in this file. -** The differences are in the way that file locking is done. The default -** implementation uses Posix Advisory Locks. Alternative implementations -** use flock(), dot-files, various proprietary locking schemas, or simply -** skip locking all together. -** -** This source file is organized into divisions where the logic for various -** subfunctions is contained within the appropriate division. PLEASE -** KEEP THE STRUCTURE OF THIS FILE INTACT. New code should be placed -** in the correct division and should be clearly labeled. -** -** The layout of divisions is as follows: -** -** * General-purpose declarations and utility functions. -** * Unique file ID logic used by VxWorks. -** * Various locking primitive implementations (all except proxy locking): -** + for Posix Advisory Locks -** + for no-op locks -** + for dot-file locks -** + for flock() locking -** + for named semaphore locks (VxWorks only) -** + for AFP filesystem locks (MacOSX only) -** * sqlite3_file methods not associated with locking. -** * Definitions of sqlite3_io_methods objects for all locking -** methods plus "finder" functions for each locking method. -** * sqlite3_vfs method implementations. -** * Locking primitives for the proxy uber-locking-method. (MacOSX only) -** * Definitions of sqlite3_vfs objects for all locking methods -** plus implementations of sqlite3_os_init() and sqlite3_os_end(). -*/ -#include "sqliteInt.h" -#if SQLITE_OS_UNIX /* This file is used on unix only */ - -/* -** There are various methods for file locking used for concurrency -** control: -** -** 1. POSIX locking (the default), -** 2. No locking, -** 3. Dot-file locking, -** 4. flock() locking, -** 5. AFP locking (OSX only), -** 6. Named POSIX semaphores (VXWorks only), -** 7. proxy locking. (OSX only) -** -** Styles 4, 5, and 7 are only available of SQLITE_ENABLE_LOCKING_STYLE -** is defined to 1. The SQLITE_ENABLE_LOCKING_STYLE also enables automatic -** selection of the appropriate locking style based on the filesystem -** where the database is located. -*/ -#if !defined(SQLITE_ENABLE_LOCKING_STYLE) -# if defined(__APPLE__) -# define SQLITE_ENABLE_LOCKING_STYLE 1 -# else -# define SQLITE_ENABLE_LOCKING_STYLE 0 -# endif -#endif - -/* -** Define the OS_VXWORKS pre-processor macro to 1 if building on -** vxworks, or 0 otherwise. -*/ -#ifndef OS_VXWORKS -# if defined(__RTP__) || defined(_WRS_KERNEL) -# define OS_VXWORKS 1 -# else -# define OS_VXWORKS 0 -# endif -#endif - -/* -** These #defines should enable >2GB file support on Posix if the -** underlying operating system supports it. If the OS lacks -** large file support, these should be no-ops. -** -** Large file support can be disabled using the -DSQLITE_DISABLE_LFS switch -** on the compiler command line. This is necessary if you are compiling -** on a recent machine (ex: RedHat 7.2) but you want your code to work -** on an older machine (ex: RedHat 6.0). If you compile on RedHat 7.2 -** without this option, LFS is enable. But LFS does not exist in the kernel -** in RedHat 6.0, so the code won't work. Hence, for maximum binary -** portability you should omit LFS. -** -** The previous paragraph was written in 2005. (This paragraph is written -** on 2008-11-28.) These days, all Linux kernels support large files, so -** you should probably leave LFS enabled. But some embedded platforms might -** lack LFS in which case the SQLITE_DISABLE_LFS macro might still be useful. -*/ -#ifndef SQLITE_DISABLE_LFS -# define _LARGE_FILE 1 -# ifndef _FILE_OFFSET_BITS -# define _FILE_OFFSET_BITS 64 -# endif -# define _LARGEFILE_SOURCE 1 -#endif - -/* -** standard include files. -*/ -#include -#include -#include -#include -#include -#include -#include -#ifndef SQLITE_OMIT_WAL -#include -#endif - -#if SQLITE_ENABLE_LOCKING_STYLE -# include -# if OS_VXWORKS -# include -# include -# else -# include -# include -# endif -#endif /* SQLITE_ENABLE_LOCKING_STYLE */ - -#if defined(__APPLE__) || (SQLITE_ENABLE_LOCKING_STYLE && !OS_VXWORKS) -# include -#endif - -#ifdef HAVE_UTIME -# include -#endif - -/* -** Allowed values of unixFile.fsFlags -*/ -#define SQLITE_FSFLAGS_IS_MSDOS 0x1 - -/* -** If we are to be thread-safe, include the pthreads header and define -** the SQLITE_UNIX_THREADS macro. -*/ -#if SQLITE_THREADSAFE -# include -# define SQLITE_UNIX_THREADS 1 -#endif - -/* -** Default permissions when creating a new file -*/ -#ifndef SQLITE_DEFAULT_FILE_PERMISSIONS -# define SQLITE_DEFAULT_FILE_PERMISSIONS 0644 -#endif - -/* - ** Default permissions when creating auto proxy dir - */ -#ifndef SQLITE_DEFAULT_PROXYDIR_PERMISSIONS -# define SQLITE_DEFAULT_PROXYDIR_PERMISSIONS 0755 -#endif - -/* -** Maximum supported path-length. -*/ -#define MAX_PATHNAME 512 - -/* -** Only set the lastErrno if the error code is a real error and not -** a normal expected return code of SQLITE_BUSY or SQLITE_OK -*/ -#define IS_LOCK_ERROR(x) ((x != SQLITE_OK) && (x != SQLITE_BUSY)) - -/* Forward references */ -typedef struct unixShm unixShm; /* Connection shared memory */ -typedef struct unixShmNode unixShmNode; /* Shared memory instance */ -typedef struct unixInodeInfo unixInodeInfo; /* An i-node */ -typedef struct UnixUnusedFd UnixUnusedFd; /* An unused file descriptor */ - -/* -** Sometimes, after a file handle is closed by SQLite, the file descriptor -** cannot be closed immediately. In these cases, instances of the following -** structure are used to store the file descriptor while waiting for an -** opportunity to either close or reuse it. -*/ -struct UnixUnusedFd { - int fd; /* File descriptor to close */ - int flags; /* Flags this file descriptor was opened with */ - UnixUnusedFd *pNext; /* Next unused file descriptor on same file */ -}; - -/* -** The unixFile structure is subclass of sqlite3_file specific to the unix -** VFS implementations. -*/ -typedef struct unixFile unixFile; -struct unixFile { - sqlite3_io_methods const *pMethod; /* Always the first entry */ - unixInodeInfo *pInode; /* Info about locks on this inode */ - int h; /* The file descriptor */ - unsigned char eFileLock; /* The type of lock held on this fd */ - unsigned char ctrlFlags; /* Behavioral bits. UNIXFILE_* flags */ - int lastErrno; /* The unix errno from last I/O error */ - void *lockingContext; /* Locking style specific state */ - UnixUnusedFd *pUnused; /* Pre-allocated UnixUnusedFd */ - const char *zPath; /* Name of the file */ - unixShm *pShm; /* Shared memory segment information */ - int szChunk; /* Configured by FCNTL_CHUNK_SIZE */ -#if SQLITE_ENABLE_LOCKING_STYLE - int openFlags; /* The flags specified at open() */ -#endif -#if SQLITE_ENABLE_LOCKING_STYLE || defined(__APPLE__) - unsigned fsFlags; /* cached details from statfs() */ -#endif -#if OS_VXWORKS - int isDelete; /* Delete on close if true */ - struct vxworksFileId *pId; /* Unique file ID */ -#endif -#ifndef NDEBUG - /* The next group of variables are used to track whether or not the - ** transaction counter in bytes 24-27 of database files are updated - ** whenever any part of the database changes. An assertion fault will - ** occur if a file is updated without also updating the transaction - ** counter. This test is made to avoid new problems similar to the - ** one described by ticket #3584. - */ - unsigned char transCntrChng; /* True if the transaction counter changed */ - unsigned char dbUpdate; /* True if any part of database file changed */ - unsigned char inNormalWrite; /* True if in a normal write operation */ -#endif -#ifdef SQLITE_TEST - /* In test mode, increase the size of this structure a bit so that - ** it is larger than the struct CrashFile defined in test6.c. - */ - char aPadding[32]; -#endif -}; - -/* -** Allowed values for the unixFile.ctrlFlags bitmask: -*/ -#define UNIXFILE_EXCL 0x01 /* Connections from one process only */ -#define UNIXFILE_RDONLY 0x02 /* Connection is read only */ -#define UNIXFILE_PERSIST_WAL 0x04 /* Persistent WAL mode */ -#ifndef SQLITE_DISABLE_DIRSYNC -# define UNIXFILE_DIRSYNC 0x08 /* Directory sync needed */ -#else -# define UNIXFILE_DIRSYNC 0x00 -#endif - -/* -** Include code that is common to all os_*.c files -*/ -#include "os_common.h" - -/* -** Define various macros that are missing from some systems. -*/ -#ifndef O_LARGEFILE -# define O_LARGEFILE 0 -#endif -#ifdef SQLITE_DISABLE_LFS -# undef O_LARGEFILE -# define O_LARGEFILE 0 -#endif -#ifndef O_NOFOLLOW -# define O_NOFOLLOW 0 -#endif -#ifndef O_BINARY -# define O_BINARY 0 -#endif - -/* -** The threadid macro resolves to the thread-id or to 0. Used for -** testing and debugging only. -*/ -#if SQLITE_THREADSAFE -#define threadid pthread_self() -#else -#define threadid 0 -#endif - -#if defined(UFFS_TEST) -int os_uffs_init(void); -int os_open(const char* name, int flags, int mode); -int os_close(int fd); -int os_read(int fd, void *buf, int len); -int os_write(int fd, const void *buf, int len); -int os_lseek(int fd, long offset, int origin); -int os_ftruncate(int fd, long length); -int os_unlink(const char *name); - -int os_pread(int fd, void *buf, int count, long offset); -int os_pwrite(int fd, const void *buf, int count, long offset); -int os_posix_fallocate(int fd, long offset, long len); - -#define os_pread64 os_pread -#define os_pwrite64 os_pwrite - -#if defined(USE_PREAD) || defined(USE_PREAD64) -#error UFFS_TEST does not support PREAD/PREAD64 -#endif - -#else - -#error UFFS_TEST NOT DEFINED ??? - -#define os_open open -#define os_close close -#define os_read read -#define os_write write -#define os_lseek lseek -#define os_ftruncate ftruncate -#define os_unlink unlink -#define os_pread pread -#define os_pread64 pread64 -#define os_pwrite pwrite -#define os_pwrite64 pwrite64 -#define os_posix_fallocate posix_fallocate - -#endif // defined(UFFS_TEST) - -/* -** Different Unix systems declare open() in different ways. Same use -** open(const char*,int,mode_t). Others use open(const char*,int,...). -** The difference is important when using a pointer to the function. -** -** The safest way to deal with the problem is to always use this wrapper -** which always has the same well-defined interface. -*/ -static int posixOpen(const char *zFile, int flags, int mode){ - return os_open(zFile, flags, mode); -} - - -/* Forward reference */ -static int openDirectory(const char*, int*); - -/* -** Many system calls are accessed through pointer-to-functions so that -** they may be overridden at runtime to facilitate fault injection during -** testing and sandboxing. The following array holds the names and pointers -** to all overrideable system calls. -*/ -static struct unix_syscall { - const char *zName; /* Name of the sytem call */ - sqlite3_syscall_ptr pCurrent; /* Current value of the system call */ - sqlite3_syscall_ptr pDefault; /* Default value */ -} aSyscall[] = { - { "open", (sqlite3_syscall_ptr)posixOpen, 0 }, -#define osOpen ((int(*)(const char*,int,int))aSyscall[0].pCurrent) - - { "close", (sqlite3_syscall_ptr)os_close, 0 }, -#define osClose ((int(*)(int))aSyscall[1].pCurrent) - - { "access", (sqlite3_syscall_ptr)access, 0 }, -#define osAccess ((int(*)(const char*,int))aSyscall[2].pCurrent) - - { "getcwd", (sqlite3_syscall_ptr)getcwd, 0 }, -#define osGetcwd ((char*(*)(char*,size_t))aSyscall[3].pCurrent) - - { "stat", (sqlite3_syscall_ptr)stat, 0 }, -#define osStat ((int(*)(const char*,struct stat*))aSyscall[4].pCurrent) - -/* -** The DJGPP compiler environment looks mostly like Unix, but it -** lacks the fcntl() system call. So redefine fcntl() to be something -** that always succeeds. This means that locking does not occur under -** DJGPP. But it is DOS - what did you expect? -*/ -#ifdef __DJGPP__ - { "fstat", 0, 0 }, -#define osFstat(a,b,c) 0 -#else - { "fstat", (sqlite3_syscall_ptr)fstat, 0 }, -#define osFstat ((int(*)(int,struct stat*))aSyscall[5].pCurrent) -#endif - - { "ftruncate", (sqlite3_syscall_ptr)os_ftruncate, 0 }, -#define osFtruncate ((int(*)(int,off_t))aSyscall[6].pCurrent) - - { "fcntl", (sqlite3_syscall_ptr)fcntl, 0 }, -#define osFcntl ((int(*)(int,int,...))aSyscall[7].pCurrent) - - { "read", (sqlite3_syscall_ptr)os_read, 0 }, -#define osRead ((ssize_t(*)(int,void*,size_t))aSyscall[8].pCurrent) - -#if defined(USE_PREAD) || SQLITE_ENABLE_LOCKING_STYLE - { "pread", (sqlite3_syscall_ptr)os_pread, 0 }, -#else - { "pread", (sqlite3_syscall_ptr)0, 0 }, -#endif -#define osPread ((ssize_t(*)(int,void*,size_t,off_t))aSyscall[9].pCurrent) - -#if defined(USE_PREAD64) - { "pread64", (sqlite3_syscall_ptr)os_pread64, 0 }, -#else - { "pread64", (sqlite3_syscall_ptr)0, 0 }, -#endif -#define osPread64 ((ssize_t(*)(int,void*,size_t,off_t))aSyscall[10].pCurrent) - - { "write", (sqlite3_syscall_ptr)os_write, 0 }, -#define osWrite ((ssize_t(*)(int,const void*,size_t))aSyscall[11].pCurrent) - -#if defined(USE_PREAD) || SQLITE_ENABLE_LOCKING_STYLE - { "pwrite", (sqlite3_syscall_ptr)os_pwrite, 0 }, -#else - { "pwrite", (sqlite3_syscall_ptr)0, 0 }, -#endif -#define osPwrite ((ssize_t(*)(int,const void*,size_t,off_t))\ - aSyscall[12].pCurrent) - -#if defined(USE_PREAD64) - { "pwrite64", (sqlite3_syscall_ptr)os_pwrite64, 0 }, -#else - { "pwrite64", (sqlite3_syscall_ptr)0, 0 }, -#endif -#define osPwrite64 ((ssize_t(*)(int,const void*,size_t,off_t))\ - aSyscall[13].pCurrent) - -#if SQLITE_ENABLE_LOCKING_STYLE - { "fchmod", (sqlite3_syscall_ptr)fchmod, 0 }, -#else - { "fchmod", (sqlite3_syscall_ptr)0, 0 }, -#endif -#define osFchmod ((int(*)(int,mode_t))aSyscall[14].pCurrent) - -#if defined(HAVE_POSIX_FALLOCATE) && HAVE_POSIX_FALLOCATE -// { "fallocate", (sqlite3_syscall_ptr)posix_fallocate, 0 }, - { "fallocate", (sqlite3_syscall_ptr)os_posix_fallocate, 0 }, -#else - { "fallocate", (sqlite3_syscall_ptr)0, 0 }, -#endif -#define osFallocate ((int(*)(int,off_t,off_t))aSyscall[15].pCurrent) - - { "unlink", (sqlite3_syscall_ptr)os_unlink, 0 }, -#define osUnlink ((int(*)(const char*))aSyscall[16].pCurrent) - - { "openDirectory", (sqlite3_syscall_ptr)openDirectory, 0 }, -#define osOpenDirectory ((int(*)(const char*,int*))aSyscall[17].pCurrent) - -}; /* End of the overrideable system calls */ - -/* -** This is the xSetSystemCall() method of sqlite3_vfs for all of the -** "unix" VFSes. Return SQLITE_OK opon successfully updating the -** system call pointer, or SQLITE_NOTFOUND if there is no configurable -** system call named zName. -*/ -static int unixSetSystemCall( - sqlite3_vfs *pNotUsed, /* The VFS pointer. Not used */ - const char *zName, /* Name of system call to override */ - sqlite3_syscall_ptr pNewFunc /* Pointer to new system call value */ -){ - unsigned int i; - int rc = SQLITE_NOTFOUND; - - UNUSED_PARAMETER(pNotUsed); - if( zName==0 ){ - /* If no zName is given, restore all system calls to their default - ** settings and return NULL - */ - rc = SQLITE_OK; - for(i=0; il_type==F_RDLCK ){ - zType = "RDLCK"; - }else if( p->l_type==F_WRLCK ){ - zType = "WRLCK"; - }else if( p->l_type==F_UNLCK ){ - zType = "UNLCK"; - }else{ - assert( 0 ); - } - assert( p->l_whence==SEEK_SET ); - s = osFcntl(fd, op, p); - savedErrno = errno; - sqlite3DebugPrintf("fcntl %d %d %s %s %d %d %d %d\n", - threadid, fd, zOpName, zType, (int)p->l_start, (int)p->l_len, - (int)p->l_pid, s); - if( s==(-1) && op==F_SETLK && (p->l_type==F_RDLCK || p->l_type==F_WRLCK) ){ - struct flock l2; - l2 = *p; - osFcntl(fd, F_GETLK, &l2); - if( l2.l_type==F_RDLCK ){ - zType = "RDLCK"; - }else if( l2.l_type==F_WRLCK ){ - zType = "WRLCK"; - }else if( l2.l_type==F_UNLCK ){ - zType = "UNLCK"; - }else{ - assert( 0 ); - } - sqlite3DebugPrintf("fcntl-failure-reason: %s %d %d %d\n", - zType, (int)l2.l_start, (int)l2.l_len, (int)l2.l_pid); - } - errno = savedErrno; - return s; -} -#undef osFcntl -#define osFcntl lockTrace -#endif /* SQLITE_LOCK_TRACE */ - -/* -** Retry ftruncate() calls that fail due to EINTR -*/ -static int robust_ftruncate(int h, sqlite3_int64 sz){ - int rc; - do{ rc = osFtruncate(h,sz); }while( rc<0 && errno==EINTR ); - return rc; -} - -/* -** This routine translates a standard POSIX errno code into something -** useful to the clients of the sqlite3 functions. Specifically, it is -** intended to translate a variety of "try again" errors into SQLITE_BUSY -** and a variety of "please close the file descriptor NOW" errors into -** SQLITE_IOERR -** -** Errors during initialization of locks, or file system support for locks, -** should handle ENOLCK, ENOTSUP, EOPNOTSUPP separately. -*/ -static int sqliteErrorFromPosixError(int posixError, int sqliteIOErr) { - switch (posixError) { -#if 0 - /* At one point this code was not commented out. In theory, this branch - ** should never be hit, as this function should only be called after - ** a locking-related function (i.e. fcntl()) has returned non-zero with - ** the value of errno as the first argument. Since a system call has failed, - ** errno should be non-zero. - ** - ** Despite this, if errno really is zero, we still don't want to return - ** SQLITE_OK. The system call failed, and *some* SQLite error should be - ** propagated back to the caller. Commenting this branch out means errno==0 - ** will be handled by the "default:" case below. - */ - case 0: - return SQLITE_OK; -#endif - - case EAGAIN: - case ETIMEDOUT: - case EBUSY: - case EINTR: - case ENOLCK: - /* random NFS retry error, unless during file system support - * introspection, in which it actually means what it says */ - return SQLITE_BUSY; - - case EACCES: - /* EACCES is like EAGAIN during locking operations, but not any other time*/ - if( (sqliteIOErr == SQLITE_IOERR_LOCK) || - (sqliteIOErr == SQLITE_IOERR_UNLOCK) || - (sqliteIOErr == SQLITE_IOERR_RDLOCK) || - (sqliteIOErr == SQLITE_IOERR_CHECKRESERVEDLOCK) ){ - return SQLITE_BUSY; - } - /* else fall through */ - case EPERM: - return SQLITE_PERM; - - /* EDEADLK is only possible if a call to fcntl(F_SETLKW) is made. And - ** this module never makes such a call. And the code in SQLite itself - ** asserts that SQLITE_IOERR_BLOCKED is never returned. For these reasons - ** this case is also commented out. If the system does set errno to EDEADLK, - ** the default SQLITE_IOERR_XXX code will be returned. */ -#if 0 - case EDEADLK: - return SQLITE_IOERR_BLOCKED; -#endif - -#if EOPNOTSUPP!=ENOTSUP - case EOPNOTSUPP: - /* something went terribly awry, unless during file system support - * introspection, in which it actually means what it says */ -#endif -#ifdef ENOTSUP - case ENOTSUP: - /* invalid fd, unless during file system support introspection, in which - * it actually means what it says */ -#endif - case EIO: - case EBADF: - case EINVAL: - case ENOTCONN: - case ENODEV: - case ENXIO: - case ENOENT: -#ifdef ESTALE /* ESTALE is not defined on Interix systems */ - case ESTALE: -#endif - case ENOSYS: - /* these should force the client to close the file and reconnect */ - - default: - return sqliteIOErr; - } -} - - - -/****************************************************************************** -****************** Begin Unique File ID Utility Used By VxWorks *************** -** -** On most versions of unix, we can get a unique ID for a file by concatenating -** the device number and the inode number. But this does not work on VxWorks. -** On VxWorks, a unique file id must be based on the canonical filename. -** -** A pointer to an instance of the following structure can be used as a -** unique file ID in VxWorks. Each instance of this structure contains -** a copy of the canonical filename. There is also a reference count. -** The structure is reclaimed when the number of pointers to it drops to -** zero. -** -** There are never very many files open at one time and lookups are not -** a performance-critical path, so it is sufficient to put these -** structures on a linked list. -*/ -struct vxworksFileId { - struct vxworksFileId *pNext; /* Next in a list of them all */ - int nRef; /* Number of references to this one */ - int nName; /* Length of the zCanonicalName[] string */ - char *zCanonicalName; /* Canonical filename */ -}; - -#if OS_VXWORKS -/* -** All unique filenames are held on a linked list headed by this -** variable: -*/ -static struct vxworksFileId *vxworksFileList = 0; - -/* -** Simplify a filename into its canonical form -** by making the following changes: -** -** * removing any trailing and duplicate / -** * convert /./ into just / -** * convert /A/../ where A is any simple name into just / -** -** Changes are made in-place. Return the new name length. -** -** The original filename is in z[0..n-1]. Return the number of -** characters in the simplified name. -*/ -static int vxworksSimplifyName(char *z, int n){ - int i, j; - while( n>1 && z[n-1]=='/' ){ n--; } - for(i=j=0; i0 && z[j-1]!='/' ){ j--; } - if( j>0 ){ j--; } - i += 2; - continue; - } - } - z[j++] = z[i]; - } - z[j] = 0; - return j; -} - -/* -** Find a unique file ID for the given absolute pathname. Return -** a pointer to the vxworksFileId object. This pointer is the unique -** file ID. -** -** The nRef field of the vxworksFileId object is incremented before -** the object is returned. A new vxworksFileId object is created -** and added to the global list if necessary. -** -** If a memory allocation error occurs, return NULL. -*/ -static struct vxworksFileId *vxworksFindFileId(const char *zAbsoluteName){ - struct vxworksFileId *pNew; /* search key and new file ID */ - struct vxworksFileId *pCandidate; /* For looping over existing file IDs */ - int n; /* Length of zAbsoluteName string */ - - assert( zAbsoluteName[0]=='/' ); - n = (int)strlen(zAbsoluteName); - pNew = sqlite3_malloc( sizeof(*pNew) + (n+1) ); - if( pNew==0 ) return 0; - pNew->zCanonicalName = (char*)&pNew[1]; - memcpy(pNew->zCanonicalName, zAbsoluteName, n+1); - n = vxworksSimplifyName(pNew->zCanonicalName, n); - - /* Search for an existing entry that matching the canonical name. - ** If found, increment the reference count and return a pointer to - ** the existing file ID. - */ - unixEnterMutex(); - for(pCandidate=vxworksFileList; pCandidate; pCandidate=pCandidate->pNext){ - if( pCandidate->nName==n - && memcmp(pCandidate->zCanonicalName, pNew->zCanonicalName, n)==0 - ){ - sqlite3_free(pNew); - pCandidate->nRef++; - unixLeaveMutex(); - return pCandidate; - } - } - - /* No match was found. We will make a new file ID */ - pNew->nRef = 1; - pNew->nName = n; - pNew->pNext = vxworksFileList; - vxworksFileList = pNew; - unixLeaveMutex(); - return pNew; -} - -/* -** Decrement the reference count on a vxworksFileId object. Free -** the object when the reference count reaches zero. -*/ -static void vxworksReleaseFileId(struct vxworksFileId *pId){ - unixEnterMutex(); - assert( pId->nRef>0 ); - pId->nRef--; - if( pId->nRef==0 ){ - struct vxworksFileId **pp; - for(pp=&vxworksFileList; *pp && *pp!=pId; pp = &((*pp)->pNext)){} - assert( *pp==pId ); - *pp = pId->pNext; - sqlite3_free(pId); - } - unixLeaveMutex(); -} -#endif /* OS_VXWORKS */ -/*************** End of Unique File ID Utility Used By VxWorks **************** -******************************************************************************/ - - -/****************************************************************************** -*************************** Posix Advisory Locking **************************** -** -** POSIX advisory locks are broken by design. ANSI STD 1003.1 (1996) -** section 6.5.2.2 lines 483 through 490 specify that when a process -** sets or clears a lock, that operation overrides any prior locks set -** by the same process. It does not explicitly say so, but this implies -** that it overrides locks set by the same process using a different -** file descriptor. Consider this test case: -** -** int fd1 = open("./file1", O_RDWR|O_CREAT, 0644); -** int fd2 = open("./file2", O_RDWR|O_CREAT, 0644); -** -** Suppose ./file1 and ./file2 are really the same file (because -** one is a hard or symbolic link to the other) then if you set -** an exclusive lock on fd1, then try to get an exclusive lock -** on fd2, it works. I would have expected the second lock to -** fail since there was already a lock on the file due to fd1. -** But not so. Since both locks came from the same process, the -** second overrides the first, even though they were on different -** file descriptors opened on different file names. -** -** This means that we cannot use POSIX locks to synchronize file access -** among competing threads of the same process. POSIX locks will work fine -** to synchronize access for threads in separate processes, but not -** threads within the same process. -** -** To work around the problem, SQLite has to manage file locks internally -** on its own. Whenever a new database is opened, we have to find the -** specific inode of the database file (the inode is determined by the -** st_dev and st_ino fields of the stat structure that fstat() fills in) -** and check for locks already existing on that inode. When locks are -** created or removed, we have to look at our own internal record of the -** locks to see if another thread has previously set a lock on that same -** inode. -** -** (Aside: The use of inode numbers as unique IDs does not work on VxWorks. -** For VxWorks, we have to use the alternative unique ID system based on -** canonical filename and implemented in the previous division.) -** -** The sqlite3_file structure for POSIX is no longer just an integer file -** descriptor. It is now a structure that holds the integer file -** descriptor and a pointer to a structure that describes the internal -** locks on the corresponding inode. There is one locking structure -** per inode, so if the same inode is opened twice, both unixFile structures -** point to the same locking structure. The locking structure keeps -** a reference count (so we will know when to delete it) and a "cnt" -** field that tells us its internal lock status. cnt==0 means the -** file is unlocked. cnt==-1 means the file has an exclusive lock. -** cnt>0 means there are cnt shared locks on the file. -** -** Any attempt to lock or unlock a file first checks the locking -** structure. The fcntl() system call is only invoked to set a -** POSIX lock if the internal lock structure transitions between -** a locked and an unlocked state. -** -** But wait: there are yet more problems with POSIX advisory locks. -** -** If you close a file descriptor that points to a file that has locks, -** all locks on that file that are owned by the current process are -** released. To work around this problem, each unixInodeInfo object -** maintains a count of the number of pending locks on tha inode. -** When an attempt is made to close an unixFile, if there are -** other unixFile open on the same inode that are holding locks, the call -** to close() the file descriptor is deferred until all of the locks clear. -** The unixInodeInfo structure keeps a list of file descriptors that need to -** be closed and that list is walked (and cleared) when the last lock -** clears. -** -** Yet another problem: LinuxThreads do not play well with posix locks. -** -** Many older versions of linux use the LinuxThreads library which is -** not posix compliant. Under LinuxThreads, a lock created by thread -** A cannot be modified or overridden by a different thread B. -** Only thread A can modify the lock. Locking behavior is correct -** if the appliation uses the newer Native Posix Thread Library (NPTL) -** on linux - with NPTL a lock created by thread A can override locks -** in thread B. But there is no way to know at compile-time which -** threading library is being used. So there is no way to know at -** compile-time whether or not thread A can override locks on thread B. -** One has to do a run-time check to discover the behavior of the -** current process. -** -** SQLite used to support LinuxThreads. But support for LinuxThreads -** was dropped beginning with version 3.7.0. SQLite will still work with -** LinuxThreads provided that (1) there is no more than one connection -** per database file in the same process and (2) database connections -** do not move across threads. -*/ - -/* -** An instance of the following structure serves as the key used -** to locate a particular unixInodeInfo object. -*/ -struct unixFileId { - dev_t dev; /* Device number */ -#if OS_VXWORKS - struct vxworksFileId *pId; /* Unique file ID for vxworks. */ -#else - ino_t ino; /* Inode number */ -#endif -}; - -/* -** An instance of the following structure is allocated for each open -** inode. Or, on LinuxThreads, there is one of these structures for -** each inode opened by each thread. -** -** A single inode can have multiple file descriptors, so each unixFile -** structure contains a pointer to an instance of this object and this -** object keeps a count of the number of unixFile pointing to it. -*/ -struct unixInodeInfo { - struct unixFileId fileId; /* The lookup key */ - int nShared; /* Number of SHARED locks held */ - unsigned char eFileLock; /* One of SHARED_LOCK, RESERVED_LOCK etc. */ - unsigned char bProcessLock; /* An exclusive process lock is held */ - int nRef; /* Number of pointers to this structure */ - unixShmNode *pShmNode; /* Shared memory associated with this inode */ - int nLock; /* Number of outstanding file locks */ - UnixUnusedFd *pUnused; /* Unused file descriptors to close */ - unixInodeInfo *pNext; /* List of all unixInodeInfo objects */ - unixInodeInfo *pPrev; /* .... doubly linked */ -#if SQLITE_ENABLE_LOCKING_STYLE - unsigned long long sharedByte; /* for AFP simulated shared lock */ -#endif -#if OS_VXWORKS - sem_t *pSem; /* Named POSIX semaphore */ - char aSemName[MAX_PATHNAME+2]; /* Name of that semaphore */ -#endif -}; - -/* -** A lists of all unixInodeInfo objects. -*/ -static unixInodeInfo *inodeList = 0; - -/* -** -** This function - unixLogError_x(), is only ever called via the macro -** unixLogError(). -** -** It is invoked after an error occurs in an OS function and errno has been -** set. It logs a message using sqlite3_log() containing the current value of -** errno and, if possible, the human-readable equivalent from strerror() or -** strerror_r(). -** -** The first argument passed to the macro should be the error code that -** will be returned to SQLite (e.g. SQLITE_IOERR_DELETE, SQLITE_CANTOPEN). -** The two subsequent arguments should be the name of the OS function that -** failed (e.g. "unlink", "open") and the the associated file-system path, -** if any. -*/ -#define unixLogError(a,b,c) unixLogErrorAtLine(a,b,c,__LINE__) -static int unixLogErrorAtLine( - int errcode, /* SQLite error code */ - const char *zFunc, /* Name of OS function that failed */ - const char *zPath, /* File path associated with error */ - int iLine /* Source line number where error occurred */ -){ - char *zErr; /* Message from strerror() or equivalent */ - int iErrno = errno; /* Saved syscall error number */ - - /* If this is not a threadsafe build (SQLITE_THREADSAFE==0), then use - ** the strerror() function to obtain the human-readable error message - ** equivalent to errno. Otherwise, use strerror_r(). - */ -#if SQLITE_THREADSAFE && defined(HAVE_STRERROR_R) - char aErr[80]; - memset(aErr, 0, sizeof(aErr)); - zErr = aErr; - - /* If STRERROR_R_CHAR_P (set by autoconf scripts) or __USE_GNU is defined, - ** assume that the system provides the the GNU version of strerror_r() that - ** returns a pointer to a buffer containing the error message. That pointer - ** may point to aErr[], or it may point to some static storage somewhere. - ** Otherwise, assume that the system provides the POSIX version of - ** strerror_r(), which always writes an error message into aErr[]. - ** - ** If the code incorrectly assumes that it is the POSIX version that is - ** available, the error message will often be an empty string. Not a - ** huge problem. Incorrectly concluding that the GNU version is available - ** could lead to a segfault though. - */ -#if defined(STRERROR_R_CHAR_P) || defined(__USE_GNU) - zErr = -# endif - strerror_r(iErrno, aErr, sizeof(aErr)-1); - -#elif SQLITE_THREADSAFE - /* This is a threadsafe build, but strerror_r() is not available. */ - zErr = ""; -#else - /* Non-threadsafe build, use strerror(). */ - zErr = strerror(iErrno); -#endif - - assert( errcode!=SQLITE_OK ); - if( zPath==0 ) zPath = ""; - sqlite3_log(errcode, - "os_unix.c:%d: (%d) %s(%s) - %s", - iLine, iErrno, zFunc, zPath, zErr - ); - - return errcode; -} - -/* -** Close a file descriptor. -** -** We assume that close() almost always works, since it is only in a -** very sick application or on a very sick platform that it might fail. -** If it does fail, simply leak the file descriptor, but do log the -** error. -** -** Note that it is not safe to retry close() after EINTR since the -** file descriptor might have already been reused by another thread. -** So we don't even try to recover from an EINTR. Just log the error -** and move on. -*/ -static void robust_close(unixFile *pFile, int h, int lineno){ - if( osClose(h) ){ - unixLogErrorAtLine(SQLITE_IOERR_CLOSE, "close", - pFile ? pFile->zPath : 0, lineno); - } -} - -/* -** Close all file descriptors accumuated in the unixInodeInfo->pUnused list. -*/ -static void closePendingFds(unixFile *pFile){ - unixInodeInfo *pInode = pFile->pInode; - UnixUnusedFd *p; - UnixUnusedFd *pNext; - for(p=pInode->pUnused; p; p=pNext){ - pNext = p->pNext; - robust_close(pFile, p->fd, __LINE__); - sqlite3_free(p); - } - pInode->pUnused = 0; -} - -/* -** Release a unixInodeInfo structure previously allocated by findInodeInfo(). -** -** The mutex entered using the unixEnterMutex() function must be held -** when this function is called. -*/ -static void releaseInodeInfo(unixFile *pFile){ - unixInodeInfo *pInode = pFile->pInode; - assert( unixMutexHeld() ); - if( ALWAYS(pInode) ){ - pInode->nRef--; - if( pInode->nRef==0 ){ - assert( pInode->pShmNode==0 ); - closePendingFds(pFile); - if( pInode->pPrev ){ - assert( pInode->pPrev->pNext==pInode ); - pInode->pPrev->pNext = pInode->pNext; - }else{ - assert( inodeList==pInode ); - inodeList = pInode->pNext; - } - if( pInode->pNext ){ - assert( pInode->pNext->pPrev==pInode ); - pInode->pNext->pPrev = pInode->pPrev; - } - sqlite3_free(pInode); - } - } -} - -/* -** Given a file descriptor, locate the unixInodeInfo object that -** describes that file descriptor. Create a new one if necessary. The -** return value might be uninitialized if an error occurs. -** -** The mutex entered using the unixEnterMutex() function must be held -** when this function is called. -** -** Return an appropriate error code. -*/ -static int findInodeInfo( - unixFile *pFile, /* Unix file with file desc used in the key */ - unixInodeInfo **ppInode /* Return the unixInodeInfo object here */ -){ - int rc; /* System call return code */ - int fd; /* The file descriptor for pFile */ - struct unixFileId fileId; /* Lookup key for the unixInodeInfo */ - struct stat statbuf; /* Low-level file information */ - unixInodeInfo *pInode = 0; /* Candidate unixInodeInfo object */ - - assert( unixMutexHeld() ); - - /* Get low-level information about the file that we can used to - ** create a unique name for the file. - */ - fd = pFile->h; - rc = osFstat(fd, &statbuf); - if( rc!=0 ){ - pFile->lastErrno = errno; -#ifdef EOVERFLOW - if( pFile->lastErrno==EOVERFLOW ) return SQLITE_NOLFS; -#endif - return SQLITE_IOERR; - } - -#ifdef __APPLE__ - /* On OS X on an msdos filesystem, the inode number is reported - ** incorrectly for zero-size files. See ticket #3260. To work - ** around this problem (we consider it a bug in OS X, not SQLite) - ** we always increase the file size to 1 by writing a single byte - ** prior to accessing the inode number. The one byte written is - ** an ASCII 'S' character which also happens to be the first byte - ** in the header of every SQLite database. In this way, if there - ** is a race condition such that another thread has already populated - ** the first page of the database, no damage is done. - */ - if( statbuf.st_size==0 && (pFile->fsFlags & SQLITE_FSFLAGS_IS_MSDOS)!=0 ){ - do{ rc = osWrite(fd, "S", 1); }while( rc<0 && errno==EINTR ); - if( rc!=1 ){ - pFile->lastErrno = errno; - return SQLITE_IOERR; - } - rc = osFstat(fd, &statbuf); - if( rc!=0 ){ - pFile->lastErrno = errno; - return SQLITE_IOERR; - } - } -#endif - - memset(&fileId, 0, sizeof(fileId)); - fileId.dev = statbuf.st_dev; -#if OS_VXWORKS - fileId.pId = pFile->pId; -#else - fileId.ino = statbuf.st_ino; -#endif - pInode = inodeList; - while( pInode && memcmp(&fileId, &pInode->fileId, sizeof(fileId)) ){ - pInode = pInode->pNext; - } - if( pInode==0 ){ - pInode = sqlite3_malloc( sizeof(*pInode) ); - if( pInode==0 ){ - return SQLITE_NOMEM; - } - memset(pInode, 0, sizeof(*pInode)); - memcpy(&pInode->fileId, &fileId, sizeof(fileId)); - pInode->nRef = 1; - pInode->pNext = inodeList; - pInode->pPrev = 0; - if( inodeList ) inodeList->pPrev = pInode; - inodeList = pInode; - }else{ - pInode->nRef++; - } - *ppInode = pInode; - return SQLITE_OK; -} - - -/* -** This routine checks if there is a RESERVED lock held on the specified -** file by this or any other process. If such a lock is held, set *pResOut -** to a non-zero value otherwise *pResOut is set to zero. The return value -** is set to SQLITE_OK unless an I/O error occurs during lock checking. -*/ -static int unixCheckReservedLock(sqlite3_file *id, int *pResOut){ - int rc = SQLITE_OK; - int reserved = 0; - unixFile *pFile = (unixFile*)id; - - SimulateIOError( return SQLITE_IOERR_CHECKRESERVEDLOCK; ); - - assert( pFile ); - unixEnterMutex(); /* Because pFile->pInode is shared across threads */ - - /* Check if a thread in this process holds such a lock */ - if( pFile->pInode->eFileLock>SHARED_LOCK ){ - reserved = 1; - } - - /* Otherwise see if some other process holds it. - */ -#ifndef __DJGPP__ - if( !reserved && !pFile->pInode->bProcessLock ){ - struct flock lock; - lock.l_whence = SEEK_SET; - lock.l_start = RESERVED_BYTE; - lock.l_len = 1; - lock.l_type = F_WRLCK; - if( osFcntl(pFile->h, F_GETLK, &lock) ){ - rc = SQLITE_IOERR_CHECKRESERVEDLOCK; - pFile->lastErrno = errno; - } else if( lock.l_type!=F_UNLCK ){ - reserved = 1; - } - } -#endif - - unixLeaveMutex(); - OSTRACE(("TEST WR-LOCK %d %d %d (unix)\n", pFile->h, rc, reserved)); - - *pResOut = reserved; - return rc; -} - -/* -** Attempt to set a system-lock on the file pFile. The lock is -** described by pLock. -** -** If the pFile was opened read/write from unix-excl, then the only lock -** ever obtained is an exclusive lock, and it is obtained exactly once -** the first time any lock is attempted. All subsequent system locking -** operations become no-ops. Locking operations still happen internally, -** in order to coordinate access between separate database connections -** within this process, but all of that is handled in memory and the -** operating system does not participate. -** -** This function is a pass-through to fcntl(F_SETLK) if pFile is using -** any VFS other than "unix-excl" or if pFile is opened on "unix-excl" -** and is read-only. -** -** Zero is returned if the call completes successfully, or -1 if a call -** to fcntl() fails. In this case, errno is set appropriately (by fcntl()). -*/ -static int unixFileLock(unixFile *pFile, struct flock *pLock){ - int rc; - unixInodeInfo *pInode = pFile->pInode; - assert( unixMutexHeld() ); - assert( pInode!=0 ); - if( ((pFile->ctrlFlags & UNIXFILE_EXCL)!=0 || pInode->bProcessLock) - && ((pFile->ctrlFlags & UNIXFILE_RDONLY)==0) - ){ - if( pInode->bProcessLock==0 ){ - struct flock lock; - assert( pInode->nLock==0 ); - lock.l_whence = SEEK_SET; - lock.l_start = SHARED_FIRST; - lock.l_len = SHARED_SIZE; - lock.l_type = F_WRLCK; - rc = osFcntl(pFile->h, F_SETLK, &lock); - if( rc<0 ) return rc; - pInode->bProcessLock = 1; - pInode->nLock++; - }else{ - rc = 0; - } - }else{ - rc = osFcntl(pFile->h, F_SETLK, pLock); - } - return rc; -} - -/* -** Lock the file with the lock specified by parameter eFileLock - one -** of the following: -** -** (1) SHARED_LOCK -** (2) RESERVED_LOCK -** (3) PENDING_LOCK -** (4) EXCLUSIVE_LOCK -** -** Sometimes when requesting one lock state, additional lock states -** are inserted in between. The locking might fail on one of the later -** transitions leaving the lock state different from what it started but -** still short of its goal. The following chart shows the allowed -** transitions and the inserted intermediate states: -** -** UNLOCKED -> SHARED -** SHARED -> RESERVED -** SHARED -> (PENDING) -> EXCLUSIVE -** RESERVED -> (PENDING) -> EXCLUSIVE -** PENDING -> EXCLUSIVE -** -** This routine will only increase a lock. Use the sqlite3OsUnlock() -** routine to lower a locking level. -*/ -static int unixLock(sqlite3_file *id, int eFileLock){ - /* The following describes the implementation of the various locks and - ** lock transitions in terms of the POSIX advisory shared and exclusive - ** lock primitives (called read-locks and write-locks below, to avoid - ** confusion with SQLite lock names). The algorithms are complicated - ** slightly in order to be compatible with windows systems simultaneously - ** accessing the same database file, in case that is ever required. - ** - ** Symbols defined in os.h indentify the 'pending byte' and the 'reserved - ** byte', each single bytes at well known offsets, and the 'shared byte - ** range', a range of 510 bytes at a well known offset. - ** - ** To obtain a SHARED lock, a read-lock is obtained on the 'pending - ** byte'. If this is successful, a random byte from the 'shared byte - ** range' is read-locked and the lock on the 'pending byte' released. - ** - ** A process may only obtain a RESERVED lock after it has a SHARED lock. - ** A RESERVED lock is implemented by grabbing a write-lock on the - ** 'reserved byte'. - ** - ** A process may only obtain a PENDING lock after it has obtained a - ** SHARED lock. A PENDING lock is implemented by obtaining a write-lock - ** on the 'pending byte'. This ensures that no new SHARED locks can be - ** obtained, but existing SHARED locks are allowed to persist. A process - ** does not have to obtain a RESERVED lock on the way to a PENDING lock. - ** This property is used by the algorithm for rolling back a journal file - ** after a crash. - ** - ** An EXCLUSIVE lock, obtained after a PENDING lock is held, is - ** implemented by obtaining a write-lock on the entire 'shared byte - ** range'. Since all other locks require a read-lock on one of the bytes - ** within this range, this ensures that no other locks are held on the - ** database. - ** - ** The reason a single byte cannot be used instead of the 'shared byte - ** range' is that some versions of windows do not support read-locks. By - ** locking a random byte from a range, concurrent SHARED locks may exist - ** even if the locking primitive used is always a write-lock. - */ - int rc = SQLITE_OK; - unixFile *pFile = (unixFile*)id; - unixInodeInfo *pInode; - struct flock lock; - int tErrno = 0; - - assert( pFile ); - OSTRACE(("LOCK %d %s was %s(%s,%d) pid=%d (unix)\n", pFile->h, - azFileLock(eFileLock), azFileLock(pFile->eFileLock), - azFileLock(pFile->pInode->eFileLock), pFile->pInode->nShared , getpid())); - - /* If there is already a lock of this type or more restrictive on the - ** unixFile, do nothing. Don't use the end_lock: exit path, as - ** unixEnterMutex() hasn't been called yet. - */ - if( pFile->eFileLock>=eFileLock ){ - OSTRACE(("LOCK %d %s ok (already held) (unix)\n", pFile->h, - azFileLock(eFileLock))); - return SQLITE_OK; - } - - /* Make sure the locking sequence is correct. - ** (1) We never move from unlocked to anything higher than shared lock. - ** (2) SQLite never explicitly requests a pendig lock. - ** (3) A shared lock is always held when a reserve lock is requested. - */ - assert( pFile->eFileLock!=NO_LOCK || eFileLock==SHARED_LOCK ); - assert( eFileLock!=PENDING_LOCK ); - assert( eFileLock!=RESERVED_LOCK || pFile->eFileLock==SHARED_LOCK ); - - /* This mutex is needed because pFile->pInode is shared across threads - */ - unixEnterMutex(); - pInode = pFile->pInode; - - /* If some thread using this PID has a lock via a different unixFile* - ** handle that precludes the requested lock, return BUSY. - */ - if( (pFile->eFileLock!=pInode->eFileLock && - (pInode->eFileLock>=PENDING_LOCK || eFileLock>SHARED_LOCK)) - ){ - rc = SQLITE_BUSY; - goto end_lock; - } - - /* If a SHARED lock is requested, and some thread using this PID already - ** has a SHARED or RESERVED lock, then increment reference counts and - ** return SQLITE_OK. - */ - if( eFileLock==SHARED_LOCK && - (pInode->eFileLock==SHARED_LOCK || pInode->eFileLock==RESERVED_LOCK) ){ - assert( eFileLock==SHARED_LOCK ); - assert( pFile->eFileLock==0 ); - assert( pInode->nShared>0 ); - pFile->eFileLock = SHARED_LOCK; - pInode->nShared++; - pInode->nLock++; - goto end_lock; - } - - - /* A PENDING lock is needed before acquiring a SHARED lock and before - ** acquiring an EXCLUSIVE lock. For the SHARED lock, the PENDING will - ** be released. - */ - lock.l_len = 1L; - lock.l_whence = SEEK_SET; - if( eFileLock==SHARED_LOCK - || (eFileLock==EXCLUSIVE_LOCK && pFile->eFileLocklastErrno = tErrno; - } - goto end_lock; - } - } - - - /* If control gets to this point, then actually go ahead and make - ** operating system calls for the specified lock. - */ - if( eFileLock==SHARED_LOCK ){ - assert( pInode->nShared==0 ); - assert( pInode->eFileLock==0 ); - assert( rc==SQLITE_OK ); - - /* Now get the read-lock */ - lock.l_start = SHARED_FIRST; - lock.l_len = SHARED_SIZE; - if( unixFileLock(pFile, &lock) ){ - tErrno = errno; - rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK); - } - - /* Drop the temporary PENDING lock */ - lock.l_start = PENDING_BYTE; - lock.l_len = 1L; - lock.l_type = F_UNLCK; - if( unixFileLock(pFile, &lock) && rc==SQLITE_OK ){ - /* This could happen with a network mount */ - tErrno = errno; - rc = SQLITE_IOERR_UNLOCK; - } - - if( rc ){ - if( rc!=SQLITE_BUSY ){ - pFile->lastErrno = tErrno; - } - goto end_lock; - }else{ - pFile->eFileLock = SHARED_LOCK; - pInode->nLock++; - pInode->nShared = 1; - } - }else if( eFileLock==EXCLUSIVE_LOCK && pInode->nShared>1 ){ - /* We are trying for an exclusive lock but another thread in this - ** same process is still holding a shared lock. */ - rc = SQLITE_BUSY; - }else{ - /* The request was for a RESERVED or EXCLUSIVE lock. It is - ** assumed that there is a SHARED or greater lock on the file - ** already. - */ - assert( 0!=pFile->eFileLock ); - lock.l_type = F_WRLCK; - - assert( eFileLock==RESERVED_LOCK || eFileLock==EXCLUSIVE_LOCK ); - if( eFileLock==RESERVED_LOCK ){ - lock.l_start = RESERVED_BYTE; - lock.l_len = 1L; - }else{ - lock.l_start = SHARED_FIRST; - lock.l_len = SHARED_SIZE; - } - - if( unixFileLock(pFile, &lock) ){ - tErrno = errno; - rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK); - if( rc!=SQLITE_BUSY ){ - pFile->lastErrno = tErrno; - } - } - } - - -#ifndef NDEBUG - /* Set up the transaction-counter change checking flags when - ** transitioning from a SHARED to a RESERVED lock. The change - ** from SHARED to RESERVED marks the beginning of a normal - ** write operation (not a hot journal rollback). - */ - if( rc==SQLITE_OK - && pFile->eFileLock<=SHARED_LOCK - && eFileLock==RESERVED_LOCK - ){ - pFile->transCntrChng = 0; - pFile->dbUpdate = 0; - pFile->inNormalWrite = 1; - } -#endif - - - if( rc==SQLITE_OK ){ - pFile->eFileLock = eFileLock; - pInode->eFileLock = eFileLock; - }else if( eFileLock==EXCLUSIVE_LOCK ){ - pFile->eFileLock = PENDING_LOCK; - pInode->eFileLock = PENDING_LOCK; - } - -end_lock: - unixLeaveMutex(); - OSTRACE(("LOCK %d %s %s (unix)\n", pFile->h, azFileLock(eFileLock), - rc==SQLITE_OK ? "ok" : "failed")); - return rc; -} - -/* -** Add the file descriptor used by file handle pFile to the corresponding -** pUnused list. -*/ -static void setPendingFd(unixFile *pFile){ - unixInodeInfo *pInode = pFile->pInode; - UnixUnusedFd *p = pFile->pUnused; - p->pNext = pInode->pUnused; - pInode->pUnused = p; - pFile->h = -1; - pFile->pUnused = 0; -} - -/* -** Lower the locking level on file descriptor pFile to eFileLock. eFileLock -** must be either NO_LOCK or SHARED_LOCK. -** -** If the locking level of the file descriptor is already at or below -** the requested locking level, this routine is a no-op. -** -** If handleNFSUnlock is true, then on downgrading an EXCLUSIVE_LOCK to SHARED -** the byte range is divided into 2 parts and the first part is unlocked then -** set to a read lock, then the other part is simply unlocked. This works -** around a bug in BSD NFS lockd (also seen on MacOSX 10.3+) that fails to -** remove the write lock on a region when a read lock is set. -*/ -static int posixUnlock(sqlite3_file *id, int eFileLock, int handleNFSUnlock){ - unixFile *pFile = (unixFile*)id; - unixInodeInfo *pInode; - struct flock lock; - int rc = SQLITE_OK; - - assert( pFile ); - OSTRACE(("UNLOCK %d %d was %d(%d,%d) pid=%d (unix)\n", pFile->h, eFileLock, - pFile->eFileLock, pFile->pInode->eFileLock, pFile->pInode->nShared, - getpid())); - - assert( eFileLock<=SHARED_LOCK ); - if( pFile->eFileLock<=eFileLock ){ - return SQLITE_OK; - } - unixEnterMutex(); - pInode = pFile->pInode; - assert( pInode->nShared!=0 ); - if( pFile->eFileLock>SHARED_LOCK ){ - assert( pInode->eFileLock==pFile->eFileLock ); - -#ifndef NDEBUG - /* When reducing a lock such that other processes can start - ** reading the database file again, make sure that the - ** transaction counter was updated if any part of the database - ** file changed. If the transaction counter is not updated, - ** other connections to the same file might not realize that - ** the file has changed and hence might not know to flush their - ** cache. The use of a stale cache can lead to database corruption. - */ - pFile->inNormalWrite = 0; -#endif - - /* downgrading to a shared lock on NFS involves clearing the write lock - ** before establishing the readlock - to avoid a race condition we downgrade - ** the lock in 2 blocks, so that part of the range will be covered by a - ** write lock until the rest is covered by a read lock: - ** 1: [WWWWW] - ** 2: [....W] - ** 3: [RRRRW] - ** 4: [RRRR.] - */ - if( eFileLock==SHARED_LOCK ){ - -#if !defined(__APPLE__) || !SQLITE_ENABLE_LOCKING_STYLE - (void)handleNFSUnlock; - assert( handleNFSUnlock==0 ); -#endif -#if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE - if( handleNFSUnlock ){ - int tErrno; /* Error code from system call errors */ - off_t divSize = SHARED_SIZE - 1; - - lock.l_type = F_UNLCK; - lock.l_whence = SEEK_SET; - lock.l_start = SHARED_FIRST; - lock.l_len = divSize; - if( unixFileLock(pFile, &lock)==(-1) ){ - tErrno = errno; - rc = SQLITE_IOERR_UNLOCK; - if( IS_LOCK_ERROR(rc) ){ - pFile->lastErrno = tErrno; - } - goto end_unlock; - } - lock.l_type = F_RDLCK; - lock.l_whence = SEEK_SET; - lock.l_start = SHARED_FIRST; - lock.l_len = divSize; - if( unixFileLock(pFile, &lock)==(-1) ){ - tErrno = errno; - rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_RDLOCK); - if( IS_LOCK_ERROR(rc) ){ - pFile->lastErrno = tErrno; - } - goto end_unlock; - } - lock.l_type = F_UNLCK; - lock.l_whence = SEEK_SET; - lock.l_start = SHARED_FIRST+divSize; - lock.l_len = SHARED_SIZE-divSize; - if( unixFileLock(pFile, &lock)==(-1) ){ - tErrno = errno; - rc = SQLITE_IOERR_UNLOCK; - if( IS_LOCK_ERROR(rc) ){ - pFile->lastErrno = tErrno; - } - goto end_unlock; - } - }else -#endif /* defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE */ - { - lock.l_type = F_RDLCK; - lock.l_whence = SEEK_SET; - lock.l_start = SHARED_FIRST; - lock.l_len = SHARED_SIZE; - if( unixFileLock(pFile, &lock) ){ - /* In theory, the call to unixFileLock() cannot fail because another - ** process is holding an incompatible lock. If it does, this - ** indicates that the other process is not following the locking - ** protocol. If this happens, return SQLITE_IOERR_RDLOCK. Returning - ** SQLITE_BUSY would confuse the upper layer (in practice it causes - ** an assert to fail). */ - rc = SQLITE_IOERR_RDLOCK; - pFile->lastErrno = errno; - goto end_unlock; - } - } - } - lock.l_type = F_UNLCK; - lock.l_whence = SEEK_SET; - lock.l_start = PENDING_BYTE; - lock.l_len = 2L; assert( PENDING_BYTE+1==RESERVED_BYTE ); - if( unixFileLock(pFile, &lock)==0 ){ - pInode->eFileLock = SHARED_LOCK; - }else{ - rc = SQLITE_IOERR_UNLOCK; - pFile->lastErrno = errno; - goto end_unlock; - } - } - if( eFileLock==NO_LOCK ){ - /* Decrement the shared lock counter. Release the lock using an - ** OS call only when all threads in this same process have released - ** the lock. - */ - pInode->nShared--; - if( pInode->nShared==0 ){ - lock.l_type = F_UNLCK; - lock.l_whence = SEEK_SET; - lock.l_start = lock.l_len = 0L; - if( unixFileLock(pFile, &lock)==0 ){ - pInode->eFileLock = NO_LOCK; - }else{ - rc = SQLITE_IOERR_UNLOCK; - pFile->lastErrno = errno; - pInode->eFileLock = NO_LOCK; - pFile->eFileLock = NO_LOCK; - } - } - - /* Decrement the count of locks against this same file. When the - ** count reaches zero, close any other file descriptors whose close - ** was deferred because of outstanding locks. - */ - pInode->nLock--; - assert( pInode->nLock>=0 ); - if( pInode->nLock==0 ){ - closePendingFds(pFile); - } - } - -end_unlock: - unixLeaveMutex(); - if( rc==SQLITE_OK ) pFile->eFileLock = eFileLock; - return rc; -} - -/* -** Lower the locking level on file descriptor pFile to eFileLock. eFileLock -** must be either NO_LOCK or SHARED_LOCK. -** -** If the locking level of the file descriptor is already at or below -** the requested locking level, this routine is a no-op. -*/ -static int unixUnlock(sqlite3_file *id, int eFileLock){ - return posixUnlock(id, eFileLock, 0); -} - -/* -** This function performs the parts of the "close file" operation -** common to all locking schemes. It closes the directory and file -** handles, if they are valid, and sets all fields of the unixFile -** structure to 0. -** -** It is *not* necessary to hold the mutex when this routine is called, -** even on VxWorks. A mutex will be acquired on VxWorks by the -** vxworksReleaseFileId() routine. -*/ -static int closeUnixFile(sqlite3_file *id){ - unixFile *pFile = (unixFile*)id; - if( pFile->h>=0 ){ - robust_close(pFile, pFile->h, __LINE__); - pFile->h = -1; - } -#if OS_VXWORKS - if( pFile->pId ){ - if( pFile->isDelete ){ - osUnlink(pFile->pId->zCanonicalName); - } - vxworksReleaseFileId(pFile->pId); - pFile->pId = 0; - } -#endif - OSTRACE(("CLOSE %-3d\n", pFile->h)); - OpenCounter(-1); - sqlite3_free(pFile->pUnused); - memset(pFile, 0, sizeof(unixFile)); - return SQLITE_OK; -} - -/* -** Close a file. -*/ -static int unixClose(sqlite3_file *id){ - int rc = SQLITE_OK; - unixFile *pFile = (unixFile *)id; - unixUnlock(id, NO_LOCK); - unixEnterMutex(); - - /* unixFile.pInode is always valid here. Otherwise, a different close - ** routine (e.g. nolockClose()) would be called instead. - */ - assert( pFile->pInode->nLock>0 || pFile->pInode->bProcessLock==0 ); - if( ALWAYS(pFile->pInode) && pFile->pInode->nLock ){ - /* If there are outstanding locks, do not actually close the file just - ** yet because that would clear those locks. Instead, add the file - ** descriptor to pInode->pUnused list. It will be automatically closed - ** when the last lock is cleared. - */ - setPendingFd(pFile); - } - releaseInodeInfo(pFile); - rc = closeUnixFile(id); - unixLeaveMutex(); - return rc; -} - -/************** End of the posix advisory lock implementation ***************** -******************************************************************************/ - -/****************************************************************************** -****************************** No-op Locking ********************************** -** -** Of the various locking implementations available, this is by far the -** simplest: locking is ignored. No attempt is made to lock the database -** file for reading or writing. -** -** This locking mode is appropriate for use on read-only databases -** (ex: databases that are burned into CD-ROM, for example.) It can -** also be used if the application employs some external mechanism to -** prevent simultaneous access of the same database by two or more -** database connections. But there is a serious risk of database -** corruption if this locking mode is used in situations where multiple -** database connections are accessing the same database file at the same -** time and one or more of those connections are writing. -*/ - -static int nolockCheckReservedLock(sqlite3_file *NotUsed, int *pResOut){ - UNUSED_PARAMETER(NotUsed); - *pResOut = 0; - return SQLITE_OK; -} -static int nolockLock(sqlite3_file *NotUsed, int NotUsed2){ - UNUSED_PARAMETER2(NotUsed, NotUsed2); - return SQLITE_OK; -} -static int nolockUnlock(sqlite3_file *NotUsed, int NotUsed2){ - UNUSED_PARAMETER2(NotUsed, NotUsed2); - return SQLITE_OK; -} - -/* -** Close the file. -*/ -static int nolockClose(sqlite3_file *id) { - return closeUnixFile(id); -} - -/******************* End of the no-op lock implementation ********************* -******************************************************************************/ - -/****************************************************************************** -************************* Begin dot-file Locking ****************************** -** -** The dotfile locking implementation uses the existance of separate lock -** files in order to control access to the database. This works on just -** about every filesystem imaginable. But there are serious downsides: -** -** (1) There is zero concurrency. A single reader blocks all other -** connections from reading or writing the database. -** -** (2) An application crash or power loss can leave stale lock files -** sitting around that need to be cleared manually. -** -** Nevertheless, a dotlock is an appropriate locking mode for use if no -** other locking strategy is available. -** -** Dotfile locking works by creating a file in the same directory as the -** database and with the same name but with a ".lock" extension added. -** The existance of a lock file implies an EXCLUSIVE lock. All other lock -** types (SHARED, RESERVED, PENDING) are mapped into EXCLUSIVE. -*/ - -/* -** The file suffix added to the data base filename in order to create the -** lock file. -*/ -#define DOTLOCK_SUFFIX ".lock" - -/* -** This routine checks if there is a RESERVED lock held on the specified -** file by this or any other process. If such a lock is held, set *pResOut -** to a non-zero value otherwise *pResOut is set to zero. The return value -** is set to SQLITE_OK unless an I/O error occurs during lock checking. -** -** In dotfile locking, either a lock exists or it does not. So in this -** variation of CheckReservedLock(), *pResOut is set to true if any lock -** is held on the file and false if the file is unlocked. -*/ -static int dotlockCheckReservedLock(sqlite3_file *id, int *pResOut) { - int rc = SQLITE_OK; - int reserved = 0; - unixFile *pFile = (unixFile*)id; - - SimulateIOError( return SQLITE_IOERR_CHECKRESERVEDLOCK; ); - - assert( pFile ); - - /* Check if a thread in this process holds such a lock */ - if( pFile->eFileLock>SHARED_LOCK ){ - /* Either this connection or some other connection in the same process - ** holds a lock on the file. No need to check further. */ - reserved = 1; - }else{ - /* The lock is held if and only if the lockfile exists */ - const char *zLockFile = (const char*)pFile->lockingContext; - reserved = osAccess(zLockFile, 0)==0; - } - OSTRACE(("TEST WR-LOCK %d %d %d (dotlock)\n", pFile->h, rc, reserved)); - *pResOut = reserved; - return rc; -} - -/* -** Lock the file with the lock specified by parameter eFileLock - one -** of the following: -** -** (1) SHARED_LOCK -** (2) RESERVED_LOCK -** (3) PENDING_LOCK -** (4) EXCLUSIVE_LOCK -** -** Sometimes when requesting one lock state, additional lock states -** are inserted in between. The locking might fail on one of the later -** transitions leaving the lock state different from what it started but -** still short of its goal. The following chart shows the allowed -** transitions and the inserted intermediate states: -** -** UNLOCKED -> SHARED -** SHARED -> RESERVED -** SHARED -> (PENDING) -> EXCLUSIVE -** RESERVED -> (PENDING) -> EXCLUSIVE -** PENDING -> EXCLUSIVE -** -** This routine will only increase a lock. Use the sqlite3OsUnlock() -** routine to lower a locking level. -** -** With dotfile locking, we really only support state (4): EXCLUSIVE. -** But we track the other locking levels internally. -*/ -static int dotlockLock(sqlite3_file *id, int eFileLock) { - unixFile *pFile = (unixFile*)id; - int fd; - char *zLockFile = (char *)pFile->lockingContext; - int rc = SQLITE_OK; - - - /* If we have any lock, then the lock file already exists. All we have - ** to do is adjust our internal record of the lock level. - */ - if( pFile->eFileLock > NO_LOCK ){ - pFile->eFileLock = eFileLock; - /* Always update the timestamp on the old file */ -#ifdef HAVE_UTIME - utime(zLockFile, NULL); -#else - utimes(zLockFile, NULL); -#endif - return SQLITE_OK; - } - - /* grab an exclusive lock */ - fd = robust_open(zLockFile,O_RDONLY|O_CREAT|O_EXCL,0600); - if( fd<0 ){ - /* failed to open/create the file, someone else may have stolen the lock */ - int tErrno = errno; - if( EEXIST == tErrno ){ - rc = SQLITE_BUSY; - } else { - rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK); - if( IS_LOCK_ERROR(rc) ){ - pFile->lastErrno = tErrno; - } - } - return rc; - } - robust_close(pFile, fd, __LINE__); - - /* got it, set the type and return ok */ - pFile->eFileLock = eFileLock; - return rc; -} - -/* -** Lower the locking level on file descriptor pFile to eFileLock. eFileLock -** must be either NO_LOCK or SHARED_LOCK. -** -** If the locking level of the file descriptor is already at or below -** the requested locking level, this routine is a no-op. -** -** When the locking level reaches NO_LOCK, delete the lock file. -*/ -static int dotlockUnlock(sqlite3_file *id, int eFileLock) { - unixFile *pFile = (unixFile*)id; - char *zLockFile = (char *)pFile->lockingContext; - - assert( pFile ); - OSTRACE(("UNLOCK %d %d was %d pid=%d (dotlock)\n", pFile->h, eFileLock, - pFile->eFileLock, getpid())); - assert( eFileLock<=SHARED_LOCK ); - - /* no-op if possible */ - if( pFile->eFileLock==eFileLock ){ - return SQLITE_OK; - } - - /* To downgrade to shared, simply update our internal notion of the - ** lock state. No need to mess with the file on disk. - */ - if( eFileLock==SHARED_LOCK ){ - pFile->eFileLock = SHARED_LOCK; - return SQLITE_OK; - } - - /* To fully unlock the database, delete the lock file */ - assert( eFileLock==NO_LOCK ); - if( osUnlink(zLockFile) ){ - int rc = 0; - int tErrno = errno; - if( ENOENT != tErrno ){ - rc = SQLITE_IOERR_UNLOCK; - } - if( IS_LOCK_ERROR(rc) ){ - pFile->lastErrno = tErrno; - } - return rc; - } - pFile->eFileLock = NO_LOCK; - return SQLITE_OK; -} - -/* -** Close a file. Make sure the lock has been released before closing. -*/ -static int dotlockClose(sqlite3_file *id) { - int rc; - if( id ){ - unixFile *pFile = (unixFile*)id; - dotlockUnlock(id, NO_LOCK); - sqlite3_free(pFile->lockingContext); - } - rc = closeUnixFile(id); - return rc; -} -/****************** End of the dot-file lock implementation ******************* -******************************************************************************/ - -/****************************************************************************** -************************** Begin flock Locking ******************************** -** -** Use the flock() system call to do file locking. -** -** flock() locking is like dot-file locking in that the various -** fine-grain locking levels supported by SQLite are collapsed into -** a single exclusive lock. In other words, SHARED, RESERVED, and -** PENDING locks are the same thing as an EXCLUSIVE lock. SQLite -** still works when you do this, but concurrency is reduced since -** only a single process can be reading the database at a time. -** -** Omit this section if SQLITE_ENABLE_LOCKING_STYLE is turned off or if -** compiling for VXWORKS. -*/ -#if SQLITE_ENABLE_LOCKING_STYLE && !OS_VXWORKS - -/* -** Retry flock() calls that fail with EINTR -*/ -#ifdef EINTR -static int robust_flock(int fd, int op){ - int rc; - do{ rc = flock(fd,op); }while( rc<0 && errno==EINTR ); - return rc; -} -#else -# define robust_flock(a,b) flock(a,b) -#endif - - -/* -** This routine checks if there is a RESERVED lock held on the specified -** file by this or any other process. If such a lock is held, set *pResOut -** to a non-zero value otherwise *pResOut is set to zero. The return value -** is set to SQLITE_OK unless an I/O error occurs during lock checking. -*/ -static int flockCheckReservedLock(sqlite3_file *id, int *pResOut){ - int rc = SQLITE_OK; - int reserved = 0; - unixFile *pFile = (unixFile*)id; - - SimulateIOError( return SQLITE_IOERR_CHECKRESERVEDLOCK; ); - - assert( pFile ); - - /* Check if a thread in this process holds such a lock */ - if( pFile->eFileLock>SHARED_LOCK ){ - reserved = 1; - } - - /* Otherwise see if some other process holds it. */ - if( !reserved ){ - /* attempt to get the lock */ - int lrc = robust_flock(pFile->h, LOCK_EX | LOCK_NB); - if( !lrc ){ - /* got the lock, unlock it */ - lrc = robust_flock(pFile->h, LOCK_UN); - if ( lrc ) { - int tErrno = errno; - /* unlock failed with an error */ - lrc = SQLITE_IOERR_UNLOCK; - if( IS_LOCK_ERROR(lrc) ){ - pFile->lastErrno = tErrno; - rc = lrc; - } - } - } else { - int tErrno = errno; - reserved = 1; - /* someone else might have it reserved */ - lrc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK); - if( IS_LOCK_ERROR(lrc) ){ - pFile->lastErrno = tErrno; - rc = lrc; - } - } - } - OSTRACE(("TEST WR-LOCK %d %d %d (flock)\n", pFile->h, rc, reserved)); - -#ifdef SQLITE_IGNORE_FLOCK_LOCK_ERRORS - if( (rc & SQLITE_IOERR) == SQLITE_IOERR ){ - rc = SQLITE_OK; - reserved=1; - } -#endif /* SQLITE_IGNORE_FLOCK_LOCK_ERRORS */ - *pResOut = reserved; - return rc; -} - -/* -** Lock the file with the lock specified by parameter eFileLock - one -** of the following: -** -** (1) SHARED_LOCK -** (2) RESERVED_LOCK -** (3) PENDING_LOCK -** (4) EXCLUSIVE_LOCK -** -** Sometimes when requesting one lock state, additional lock states -** are inserted in between. The locking might fail on one of the later -** transitions leaving the lock state different from what it started but -** still short of its goal. The following chart shows the allowed -** transitions and the inserted intermediate states: -** -** UNLOCKED -> SHARED -** SHARED -> RESERVED -** SHARED -> (PENDING) -> EXCLUSIVE -** RESERVED -> (PENDING) -> EXCLUSIVE -** PENDING -> EXCLUSIVE -** -** flock() only really support EXCLUSIVE locks. We track intermediate -** lock states in the sqlite3_file structure, but all locks SHARED or -** above are really EXCLUSIVE locks and exclude all other processes from -** access the file. -** -** This routine will only increase a lock. Use the sqlite3OsUnlock() -** routine to lower a locking level. -*/ -static int flockLock(sqlite3_file *id, int eFileLock) { - int rc = SQLITE_OK; - unixFile *pFile = (unixFile*)id; - - assert( pFile ); - - /* if we already have a lock, it is exclusive. - ** Just adjust level and punt on outta here. */ - if (pFile->eFileLock > NO_LOCK) { - pFile->eFileLock = eFileLock; - return SQLITE_OK; - } - - /* grab an exclusive lock */ - - if (robust_flock(pFile->h, LOCK_EX | LOCK_NB)) { - int tErrno = errno; - /* didn't get, must be busy */ - rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_LOCK); - if( IS_LOCK_ERROR(rc) ){ - pFile->lastErrno = tErrno; - } - } else { - /* got it, set the type and return ok */ - pFile->eFileLock = eFileLock; - } - OSTRACE(("LOCK %d %s %s (flock)\n", pFile->h, azFileLock(eFileLock), - rc==SQLITE_OK ? "ok" : "failed")); -#ifdef SQLITE_IGNORE_FLOCK_LOCK_ERRORS - if( (rc & SQLITE_IOERR) == SQLITE_IOERR ){ - rc = SQLITE_BUSY; - } -#endif /* SQLITE_IGNORE_FLOCK_LOCK_ERRORS */ - return rc; -} - - -/* -** Lower the locking level on file descriptor pFile to eFileLock. eFileLock -** must be either NO_LOCK or SHARED_LOCK. -** -** If the locking level of the file descriptor is already at or below -** the requested locking level, this routine is a no-op. -*/ -static int flockUnlock(sqlite3_file *id, int eFileLock) { - unixFile *pFile = (unixFile*)id; - - assert( pFile ); - OSTRACE(("UNLOCK %d %d was %d pid=%d (flock)\n", pFile->h, eFileLock, - pFile->eFileLock, getpid())); - assert( eFileLock<=SHARED_LOCK ); - - /* no-op if possible */ - if( pFile->eFileLock==eFileLock ){ - return SQLITE_OK; - } - - /* shared can just be set because we always have an exclusive */ - if (eFileLock==SHARED_LOCK) { - pFile->eFileLock = eFileLock; - return SQLITE_OK; - } - - /* no, really, unlock. */ - if( robust_flock(pFile->h, LOCK_UN) ){ -#ifdef SQLITE_IGNORE_FLOCK_LOCK_ERRORS - return SQLITE_OK; -#endif /* SQLITE_IGNORE_FLOCK_LOCK_ERRORS */ - return SQLITE_IOERR_UNLOCK; - }else{ - pFile->eFileLock = NO_LOCK; - return SQLITE_OK; - } -} - -/* -** Close a file. -*/ -static int flockClose(sqlite3_file *id) { - if( id ){ - flockUnlock(id, NO_LOCK); - } - return closeUnixFile(id); -} - -#endif /* SQLITE_ENABLE_LOCKING_STYLE && !OS_VXWORK */ - -/******************* End of the flock lock implementation ********************* -******************************************************************************/ - -/****************************************************************************** -************************ Begin Named Semaphore Locking ************************ -** -** Named semaphore locking is only supported on VxWorks. -** -** Semaphore locking is like dot-lock and flock in that it really only -** supports EXCLUSIVE locking. Only a single process can read or write -** the database file at a time. This reduces potential concurrency, but -** makes the lock implementation much easier. -*/ -#if OS_VXWORKS - -/* -** This routine checks if there is a RESERVED lock held on the specified -** file by this or any other process. If such a lock is held, set *pResOut -** to a non-zero value otherwise *pResOut is set to zero. The return value -** is set to SQLITE_OK unless an I/O error occurs during lock checking. -*/ -static int semCheckReservedLock(sqlite3_file *id, int *pResOut) { - int rc = SQLITE_OK; - int reserved = 0; - unixFile *pFile = (unixFile*)id; - - SimulateIOError( return SQLITE_IOERR_CHECKRESERVEDLOCK; ); - - assert( pFile ); - - /* Check if a thread in this process holds such a lock */ - if( pFile->eFileLock>SHARED_LOCK ){ - reserved = 1; - } - - /* Otherwise see if some other process holds it. */ - if( !reserved ){ - sem_t *pSem = pFile->pInode->pSem; - struct stat statBuf; - - if( sem_trywait(pSem)==-1 ){ - int tErrno = errno; - if( EAGAIN != tErrno ){ - rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_CHECKRESERVEDLOCK); - pFile->lastErrno = tErrno; - } else { - /* someone else has the lock when we are in NO_LOCK */ - reserved = (pFile->eFileLock < SHARED_LOCK); - } - }else{ - /* we could have it if we want it */ - sem_post(pSem); - } - } - OSTRACE(("TEST WR-LOCK %d %d %d (sem)\n", pFile->h, rc, reserved)); - - *pResOut = reserved; - return rc; -} - -/* -** Lock the file with the lock specified by parameter eFileLock - one -** of the following: -** -** (1) SHARED_LOCK -** (2) RESERVED_LOCK -** (3) PENDING_LOCK -** (4) EXCLUSIVE_LOCK -** -** Sometimes when requesting one lock state, additional lock states -** are inserted in between. The locking might fail on one of the later -** transitions leaving the lock state different from what it started but -** still short of its goal. The following chart shows the allowed -** transitions and the inserted intermediate states: -** -** UNLOCKED -> SHARED -** SHARED -> RESERVED -** SHARED -> (PENDING) -> EXCLUSIVE -** RESERVED -> (PENDING) -> EXCLUSIVE -** PENDING -> EXCLUSIVE -** -** Semaphore locks only really support EXCLUSIVE locks. We track intermediate -** lock states in the sqlite3_file structure, but all locks SHARED or -** above are really EXCLUSIVE locks and exclude all other processes from -** access the file. -** -** This routine will only increase a lock. Use the sqlite3OsUnlock() -** routine to lower a locking level. -*/ -static int semLock(sqlite3_file *id, int eFileLock) { - unixFile *pFile = (unixFile*)id; - int fd; - sem_t *pSem = pFile->pInode->pSem; - int rc = SQLITE_OK; - - /* if we already have a lock, it is exclusive. - ** Just adjust level and punt on outta here. */ - if (pFile->eFileLock > NO_LOCK) { - pFile->eFileLock = eFileLock; - rc = SQLITE_OK; - goto sem_end_lock; - } - - /* lock semaphore now but bail out when already locked. */ - if( sem_trywait(pSem)==-1 ){ - rc = SQLITE_BUSY; - goto sem_end_lock; - } - - /* got it, set the type and return ok */ - pFile->eFileLock = eFileLock; - - sem_end_lock: - return rc; -} - -/* -** Lower the locking level on file descriptor pFile to eFileLock. eFileLock -** must be either NO_LOCK or SHARED_LOCK. -** -** If the locking level of the file descriptor is already at or below -** the requested locking level, this routine is a no-op. -*/ -static int semUnlock(sqlite3_file *id, int eFileLock) { - unixFile *pFile = (unixFile*)id; - sem_t *pSem = pFile->pInode->pSem; - - assert( pFile ); - assert( pSem ); - OSTRACE(("UNLOCK %d %d was %d pid=%d (sem)\n", pFile->h, eFileLock, - pFile->eFileLock, getpid())); - assert( eFileLock<=SHARED_LOCK ); - - /* no-op if possible */ - if( pFile->eFileLock==eFileLock ){ - return SQLITE_OK; - } - - /* shared can just be set because we always have an exclusive */ - if (eFileLock==SHARED_LOCK) { - pFile->eFileLock = eFileLock; - return SQLITE_OK; - } - - /* no, really unlock. */ - if ( sem_post(pSem)==-1 ) { - int rc, tErrno = errno; - rc = sqliteErrorFromPosixError(tErrno, SQLITE_IOERR_UNLOCK); - if( IS_LOCK_ERROR(rc) ){ - pFile->lastErrno = tErrno; - } - return rc; - } - pFile->eFileLock = NO_LOCK; - return SQLITE_OK; -} - -/* - ** Close a file. - */ -static int semClose(sqlite3_file *id) { - if( id ){ - unixFile *pFile = (unixFile*)id; - semUnlock(id, NO_LOCK); - assert( pFile ); - unixEnterMutex(); - releaseInodeInfo(pFile); - unixLeaveMutex(); - closeUnixFile(id); - } - return SQLITE_OK; -} - -#endif /* OS_VXWORKS */ -/* -** Named semaphore locking is only available on VxWorks. -** -*************** End of the named semaphore lock implementation **************** -******************************************************************************/ - - -/****************************************************************************** -*************************** Begin AFP Locking ********************************* -** -** AFP is the Apple Filing Protocol. AFP is a network filesystem found -** on Apple Macintosh computers - both OS9 and OSX. -** -** Third-party implementations of AFP are available. But this code here -** only works on OSX. -*/ - -#if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE -/* -** The afpLockingContext structure contains all afp lock specific state -*/ -typedef struct afpLockingContext afpLockingContext; -struct afpLockingContext { - int reserved; - const char *dbPath; /* Name of the open file */ -}; - -struct ByteRangeLockPB2 -{ - unsigned long long offset; /* offset to first byte to lock */ - unsigned long long length; /* nbr of bytes to lock */ - unsigned long long retRangeStart; /* nbr of 1st byte locked if successful */ - unsigned char unLockFlag; /* 1 = unlock, 0 = lock */ - unsigned char startEndFlag; /* 1=rel to end of fork, 0=rel to start */ - int fd; /* file desc to assoc this lock with */ -}; - -#define afpfsByteRangeLock2FSCTL _IOWR('z', 23, struct ByteRangeLockPB2) - -/* -** This is a utility for setting or clearing a bit-range lock on an -** AFP filesystem. -** -** Return SQLITE_OK on success, SQLITE_BUSY on failure. -*/ -static int afpSetLock( - const char *path, /* Name of the file to be locked or unlocked */ - unixFile *pFile, /* Open file descriptor on path */ - unsigned long long offset, /* First byte to be locked */ - unsigned long long length, /* Number of bytes to lock */ - int setLockFlag /* True to set lock. False to clear lock */ -){ - struct ByteRangeLockPB2 pb; - int err; - - pb.unLockFlag = setLockFlag ? 0 : 1; - pb.startEndFlag = 0; - pb.offset = offset; - pb.length = length; - pb.fd = pFile->h; - - OSTRACE(("AFPSETLOCK [%s] for %d%s in range %llx:%llx\n", - (setLockFlag?"ON":"OFF"), pFile->h, (pb.fd==-1?"[testval-1]":""), - offset, length)); - err = fsctl(path, afpfsByteRangeLock2FSCTL, &pb, 0); - if ( err==-1 ) { - int rc; - int tErrno = errno; - OSTRACE(("AFPSETLOCK failed to fsctl() '%s' %d %s\n", - path, tErrno, strerror(tErrno))); -#ifdef SQLITE_IGNORE_AFP_LOCK_ERRORS - rc = SQLITE_BUSY; -#else - rc = sqliteErrorFromPosixError(tErrno, - setLockFlag ? SQLITE_IOERR_LOCK : SQLITE_IOERR_UNLOCK); -#endif /* SQLITE_IGNORE_AFP_LOCK_ERRORS */ - if( IS_LOCK_ERROR(rc) ){ - pFile->lastErrno = tErrno; - } - return rc; - } else { - return SQLITE_OK; - } -} - -/* -** This routine checks if there is a RESERVED lock held on the specified -** file by this or any other process. If such a lock is held, set *pResOut -** to a non-zero value otherwise *pResOut is set to zero. The return value -** is set to SQLITE_OK unless an I/O error occurs during lock checking. -*/ -static int afpCheckReservedLock(sqlite3_file *id, int *pResOut){ - int rc = SQLITE_OK; - int reserved = 0; - unixFile *pFile = (unixFile*)id; - afpLockingContext *context; - - SimulateIOError( return SQLITE_IOERR_CHECKRESERVEDLOCK; ); - - assert( pFile ); - context = (afpLockingContext *) pFile->lockingContext; - if( context->reserved ){ - *pResOut = 1; - return SQLITE_OK; - } - unixEnterMutex(); /* Because pFile->pInode is shared across threads */ - - /* Check if a thread in this process holds such a lock */ - if( pFile->pInode->eFileLock>SHARED_LOCK ){ - reserved = 1; - } - - /* Otherwise see if some other process holds it. - */ - if( !reserved ){ - /* lock the RESERVED byte */ - int lrc = afpSetLock(context->dbPath, pFile, RESERVED_BYTE, 1,1); - if( SQLITE_OK==lrc ){ - /* if we succeeded in taking the reserved lock, unlock it to restore - ** the original state */ - lrc = afpSetLock(context->dbPath, pFile, RESERVED_BYTE, 1, 0); - } else { - /* if we failed to get the lock then someone else must have it */ - reserved = 1; - } - if( IS_LOCK_ERROR(lrc) ){ - rc=lrc; - } - } - - unixLeaveMutex(); - OSTRACE(("TEST WR-LOCK %d %d %d (afp)\n", pFile->h, rc, reserved)); - - *pResOut = reserved; - return rc; -} - -/* -** Lock the file with the lock specified by parameter eFileLock - one -** of the following: -** -** (1) SHARED_LOCK -** (2) RESERVED_LOCK -** (3) PENDING_LOCK -** (4) EXCLUSIVE_LOCK -** -** Sometimes when requesting one lock state, additional lock states -** are inserted in between. The locking might fail on one of the later -** transitions leaving the lock state different from what it started but -** still short of its goal. The following chart shows the allowed -** transitions and the inserted intermediate states: -** -** UNLOCKED -> SHARED -** SHARED -> RESERVED -** SHARED -> (PENDING) -> EXCLUSIVE -** RESERVED -> (PENDING) -> EXCLUSIVE -** PENDING -> EXCLUSIVE -** -** This routine will only increase a lock. Use the sqlite3OsUnlock() -** routine to lower a locking level. -*/ -static int afpLock(sqlite3_file *id, int eFileLock){ - int rc = SQLITE_OK; - unixFile *pFile = (unixFile*)id; - unixInodeInfo *pInode = pFile->pInode; - afpLockingContext *context = (afpLockingContext *) pFile->lockingContext; - - assert( pFile ); - OSTRACE(("LOCK %d %s was %s(%s,%d) pid=%d (afp)\n", pFile->h, - azFileLock(eFileLock), azFileLock(pFile->eFileLock), - azFileLock(pInode->eFileLock), pInode->nShared , getpid())); - - /* If there is already a lock of this type or more restrictive on the - ** unixFile, do nothing. Don't use the afp_end_lock: exit path, as - ** unixEnterMutex() hasn't been called yet. - */ - if( pFile->eFileLock>=eFileLock ){ - OSTRACE(("LOCK %d %s ok (already held) (afp)\n", pFile->h, - azFileLock(eFileLock))); - return SQLITE_OK; - } - - /* Make sure the locking sequence is correct - ** (1) We never move from unlocked to anything higher than shared lock. - ** (2) SQLite never explicitly requests a pendig lock. - ** (3) A shared lock is always held when a reserve lock is requested. - */ - assert( pFile->eFileLock!=NO_LOCK || eFileLock==SHARED_LOCK ); - assert( eFileLock!=PENDING_LOCK ); - assert( eFileLock!=RESERVED_LOCK || pFile->eFileLock==SHARED_LOCK ); - - /* This mutex is needed because pFile->pInode is shared across threads - */ - unixEnterMutex(); - pInode = pFile->pInode; - - /* If some thread using this PID has a lock via a different unixFile* - ** handle that precludes the requested lock, return BUSY. - */ - if( (pFile->eFileLock!=pInode->eFileLock && - (pInode->eFileLock>=PENDING_LOCK || eFileLock>SHARED_LOCK)) - ){ - rc = SQLITE_BUSY; - goto afp_end_lock; - } - - /* If a SHARED lock is requested, and some thread using this PID already - ** has a SHARED or RESERVED lock, then increment reference counts and - ** return SQLITE_OK. - */ - if( eFileLock==SHARED_LOCK && - (pInode->eFileLock==SHARED_LOCK || pInode->eFileLock==RESERVED_LOCK) ){ - assert( eFileLock==SHARED_LOCK ); - assert( pFile->eFileLock==0 ); - assert( pInode->nShared>0 ); - pFile->eFileLock = SHARED_LOCK; - pInode->nShared++; - pInode->nLock++; - goto afp_end_lock; - } - - /* A PENDING lock is needed before acquiring a SHARED lock and before - ** acquiring an EXCLUSIVE lock. For the SHARED lock, the PENDING will - ** be released. - */ - if( eFileLock==SHARED_LOCK - || (eFileLock==EXCLUSIVE_LOCK && pFile->eFileLockdbPath, pFile, PENDING_BYTE, 1, 1); - if (failed) { - rc = failed; - goto afp_end_lock; - } - } - - /* If control gets to this point, then actually go ahead and make - ** operating system calls for the specified lock. - */ - if( eFileLock==SHARED_LOCK ){ - int lrc1, lrc2, lrc1Errno = 0; - long lk, mask; - - assert( pInode->nShared==0 ); - assert( pInode->eFileLock==0 ); - - mask = (sizeof(long)==8) ? LARGEST_INT64 : 0x7fffffff; - /* Now get the read-lock SHARED_LOCK */ - /* note that the quality of the randomness doesn't matter that much */ - lk = random(); - pInode->sharedByte = (lk & mask)%(SHARED_SIZE - 1); - lrc1 = afpSetLock(context->dbPath, pFile, - SHARED_FIRST+pInode->sharedByte, 1, 1); - if( IS_LOCK_ERROR(lrc1) ){ - lrc1Errno = pFile->lastErrno; - } - /* Drop the temporary PENDING lock */ - lrc2 = afpSetLock(context->dbPath, pFile, PENDING_BYTE, 1, 0); - - if( IS_LOCK_ERROR(lrc1) ) { - pFile->lastErrno = lrc1Errno; - rc = lrc1; - goto afp_end_lock; - } else if( IS_LOCK_ERROR(lrc2) ){ - rc = lrc2; - goto afp_end_lock; - } else if( lrc1 != SQLITE_OK ) { - rc = lrc1; - } else { - pFile->eFileLock = SHARED_LOCK; - pInode->nLock++; - pInode->nShared = 1; - } - }else if( eFileLock==EXCLUSIVE_LOCK && pInode->nShared>1 ){ - /* We are trying for an exclusive lock but another thread in this - ** same process is still holding a shared lock. */ - rc = SQLITE_BUSY; - }else{ - /* The request was for a RESERVED or EXCLUSIVE lock. It is - ** assumed that there is a SHARED or greater lock on the file - ** already. - */ - int failed = 0; - assert( 0!=pFile->eFileLock ); - if (eFileLock >= RESERVED_LOCK && pFile->eFileLock < RESERVED_LOCK) { - /* Acquire a RESERVED lock */ - failed = afpSetLock(context->dbPath, pFile, RESERVED_BYTE, 1,1); - if( !failed ){ - context->reserved = 1; - } - } - if (!failed && eFileLock == EXCLUSIVE_LOCK) { - /* Acquire an EXCLUSIVE lock */ - - /* Remove the shared lock before trying the range. we'll need to - ** reestablish the shared lock if we can't get the afpUnlock - */ - if( !(failed = afpSetLock(context->dbPath, pFile, SHARED_FIRST + - pInode->sharedByte, 1, 0)) ){ - int failed2 = SQLITE_OK; - /* now attemmpt to get the exclusive lock range */ - failed = afpSetLock(context->dbPath, pFile, SHARED_FIRST, - SHARED_SIZE, 1); - if( failed && (failed2 = afpSetLock(context->dbPath, pFile, - SHARED_FIRST + pInode->sharedByte, 1, 1)) ){ - /* Can't reestablish the shared lock. Sqlite can't deal, this is - ** a critical I/O error - */ - rc = ((failed & SQLITE_IOERR) == SQLITE_IOERR) ? failed2 : - SQLITE_IOERR_LOCK; - goto afp_end_lock; - } - }else{ - rc = failed; - } - } - if( failed ){ - rc = failed; - } - } - - if( rc==SQLITE_OK ){ - pFile->eFileLock = eFileLock; - pInode->eFileLock = eFileLock; - }else if( eFileLock==EXCLUSIVE_LOCK ){ - pFile->eFileLock = PENDING_LOCK; - pInode->eFileLock = PENDING_LOCK; - } - -afp_end_lock: - unixLeaveMutex(); - OSTRACE(("LOCK %d %s %s (afp)\n", pFile->h, azFileLock(eFileLock), - rc==SQLITE_OK ? "ok" : "failed")); - return rc; -} - -/* -** Lower the locking level on file descriptor pFile to eFileLock. eFileLock -** must be either NO_LOCK or SHARED_LOCK. -** -** If the locking level of the file descriptor is already at or below -** the requested locking level, this routine is a no-op. -*/ -static int afpUnlock(sqlite3_file *id, int eFileLock) { - int rc = SQLITE_OK; - unixFile *pFile = (unixFile*)id; - unixInodeInfo *pInode; - afpLockingContext *context = (afpLockingContext *) pFile->lockingContext; - int skipShared = 0; -#ifdef SQLITE_TEST - int h = pFile->h; -#endif - - assert( pFile ); - OSTRACE(("UNLOCK %d %d was %d(%d,%d) pid=%d (afp)\n", pFile->h, eFileLock, - pFile->eFileLock, pFile->pInode->eFileLock, pFile->pInode->nShared, - getpid())); - - assert( eFileLock<=SHARED_LOCK ); - if( pFile->eFileLock<=eFileLock ){ - return SQLITE_OK; - } - unixEnterMutex(); - pInode = pFile->pInode; - assert( pInode->nShared!=0 ); - if( pFile->eFileLock>SHARED_LOCK ){ - assert( pInode->eFileLock==pFile->eFileLock ); - SimulateIOErrorBenign(1); - SimulateIOError( h=(-1) ) - SimulateIOErrorBenign(0); - -#ifndef NDEBUG - /* When reducing a lock such that other processes can start - ** reading the database file again, make sure that the - ** transaction counter was updated if any part of the database - ** file changed. If the transaction counter is not updated, - ** other connections to the same file might not realize that - ** the file has changed and hence might not know to flush their - ** cache. The use of a stale cache can lead to database corruption. - */ - assert( pFile->inNormalWrite==0 - || pFile->dbUpdate==0 - || pFile->transCntrChng==1 ); - pFile->inNormalWrite = 0; -#endif - - if( pFile->eFileLock==EXCLUSIVE_LOCK ){ - rc = afpSetLock(context->dbPath, pFile, SHARED_FIRST, SHARED_SIZE, 0); - if( rc==SQLITE_OK && (eFileLock==SHARED_LOCK || pInode->nShared>1) ){ - /* only re-establish the shared lock if necessary */ - int sharedLockByte = SHARED_FIRST+pInode->sharedByte; - rc = afpSetLock(context->dbPath, pFile, sharedLockByte, 1, 1); - } else { - skipShared = 1; - } - } - if( rc==SQLITE_OK && pFile->eFileLock>=PENDING_LOCK ){ - rc = afpSetLock(context->dbPath, pFile, PENDING_BYTE, 1, 0); - } - if( rc==SQLITE_OK && pFile->eFileLock>=RESERVED_LOCK && context->reserved ){ - rc = afpSetLock(context->dbPath, pFile, RESERVED_BYTE, 1, 0); - if( !rc ){ - context->reserved = 0; - } - } - if( rc==SQLITE_OK && (eFileLock==SHARED_LOCK || pInode->nShared>1)){ - pInode->eFileLock = SHARED_LOCK; - } - } - if( rc==SQLITE_OK && eFileLock==NO_LOCK ){ - - /* Decrement the shared lock counter. Release the lock using an - ** OS call only when all threads in this same process have released - ** the lock. - */ - unsigned long long sharedLockByte = SHARED_FIRST+pInode->sharedByte; - pInode->nShared--; - if( pInode->nShared==0 ){ - SimulateIOErrorBenign(1); - SimulateIOError( h=(-1) ) - SimulateIOErrorBenign(0); - if( !skipShared ){ - rc = afpSetLock(context->dbPath, pFile, sharedLockByte, 1, 0); - } - if( !rc ){ - pInode->eFileLock = NO_LOCK; - pFile->eFileLock = NO_LOCK; - } - } - if( rc==SQLITE_OK ){ - pInode->nLock--; - assert( pInode->nLock>=0 ); - if( pInode->nLock==0 ){ - closePendingFds(pFile); - } - } - } - - unixLeaveMutex(); - if( rc==SQLITE_OK ) pFile->eFileLock = eFileLock; - return rc; -} - -/* -** Close a file & cleanup AFP specific locking context -*/ -static int afpClose(sqlite3_file *id) { - int rc = SQLITE_OK; - if( id ){ - unixFile *pFile = (unixFile*)id; - afpUnlock(id, NO_LOCK); - unixEnterMutex(); - if( pFile->pInode && pFile->pInode->nLock ){ - /* If there are outstanding locks, do not actually close the file just - ** yet because that would clear those locks. Instead, add the file - ** descriptor to pInode->aPending. It will be automatically closed when - ** the last lock is cleared. - */ - setPendingFd(pFile); - } - releaseInodeInfo(pFile); - sqlite3_free(pFile->lockingContext); - rc = closeUnixFile(id); - unixLeaveMutex(); - } - return rc; -} - -#endif /* defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE */ -/* -** The code above is the AFP lock implementation. The code is specific -** to MacOSX and does not work on other unix platforms. No alternative -** is available. If you don't compile for a mac, then the "unix-afp" -** VFS is not available. -** -********************* End of the AFP lock implementation ********************** -******************************************************************************/ - -/****************************************************************************** -*************************** Begin NFS Locking ********************************/ - -#if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE -/* - ** Lower the locking level on file descriptor pFile to eFileLock. eFileLock - ** must be either NO_LOCK or SHARED_LOCK. - ** - ** If the locking level of the file descriptor is already at or below - ** the requested locking level, this routine is a no-op. - */ -static int nfsUnlock(sqlite3_file *id, int eFileLock){ - return posixUnlock(id, eFileLock, 1); -} - -#endif /* defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE */ -/* -** The code above is the NFS lock implementation. The code is specific -** to MacOSX and does not work on other unix platforms. No alternative -** is available. -** -********************* End of the NFS lock implementation ********************** -******************************************************************************/ - -/****************************************************************************** -**************** Non-locking sqlite3_file methods ***************************** -** -** The next division contains implementations for all methods of the -** sqlite3_file object other than the locking methods. The locking -** methods were defined in divisions above (one locking method per -** division). Those methods that are common to all locking modes -** are gather together into this division. -*/ - -/* -** Seek to the offset passed as the second argument, then read cnt -** bytes into pBuf. Return the number of bytes actually read. -** -** NB: If you define USE_PREAD or USE_PREAD64, then it might also -** be necessary to define _XOPEN_SOURCE to be 500. This varies from -** one system to another. Since SQLite does not define USE_PREAD -** any any form by default, we will not attempt to define _XOPEN_SOURCE. -** See tickets #2741 and #2681. -** -** To avoid stomping the errno value on a failed read the lastErrno value -** is set before returning. -*/ -static int seekAndRead(unixFile *id, sqlite3_int64 offset, void *pBuf, int cnt){ - int got; -#if (!defined(USE_PREAD) && !defined(USE_PREAD64)) - i64 newOffset; -#endif - TIMER_START; -#if defined(USE_PREAD) - do{ got = osPread(id->h, pBuf, cnt, offset); }while( got<0 && errno==EINTR ); - SimulateIOError( got = -1 ); -#elif defined(USE_PREAD64) - do{ got = osPread64(id->h, pBuf, cnt, offset); }while( got<0 && errno==EINTR); - SimulateIOError( got = -1 ); -#else - newOffset = os_lseek(id->h, offset, SEEK_SET); - SimulateIOError( newOffset-- ); - if( newOffset!=offset ){ - if( newOffset == -1 ){ - ((unixFile*)id)->lastErrno = errno; - }else{ - ((unixFile*)id)->lastErrno = 0; - } - return -1; - } - do{ got = osRead(id->h, pBuf, cnt); }while( got<0 && errno==EINTR ); -#endif - TIMER_END; - if( got<0 ){ - ((unixFile*)id)->lastErrno = errno; - } - OSTRACE(("READ %-3d %5d %7lld %llu\n", id->h, got, offset, TIMER_ELAPSED)); - return got; -} - -/* -** Read data from a file into a buffer. Return SQLITE_OK if all -** bytes were read successfully and SQLITE_IOERR if anything goes -** wrong. -*/ -static int unixRead( - sqlite3_file *id, - void *pBuf, - int amt, - sqlite3_int64 offset -){ - unixFile *pFile = (unixFile *)id; - int got; - assert( id ); - - /* If this is a database file (not a journal, master-journal or temp - ** file), the bytes in the locking range should never be read or written. */ -#if 0 - assert( pFile->pUnused==0 - || offset>=PENDING_BYTE+512 - || offset+amt<=PENDING_BYTE - ); -#endif - - got = seekAndRead(pFile, offset, pBuf, amt); - if( got==amt ){ - return SQLITE_OK; - }else if( got<0 ){ - /* lastErrno set by seekAndRead */ - return SQLITE_IOERR_READ; - }else{ - pFile->lastErrno = 0; /* not a system error */ - /* Unread parts of the buffer must be zero-filled */ - memset(&((char*)pBuf)[got], 0, amt-got); - return SQLITE_IOERR_SHORT_READ; - } -} - -/* -** Seek to the offset in id->offset then read cnt bytes into pBuf. -** Return the number of bytes actually read. Update the offset. -** -** To avoid stomping the errno value on a failed write the lastErrno value -** is set before returning. -*/ -static int seekAndWrite(unixFile *id, i64 offset, const void *pBuf, int cnt){ - int got; -#if (!defined(USE_PREAD) && !defined(USE_PREAD64)) - i64 newOffset; -#endif - TIMER_START; -#if defined(USE_PREAD) - do{ got = osPwrite(id->h, pBuf, cnt, offset); }while( got<0 && errno==EINTR ); -#elif defined(USE_PREAD64) - do{ got = osPwrite64(id->h, pBuf, cnt, offset);}while( got<0 && errno==EINTR); -#else - do{ - newOffset = os_lseek(id->h, offset, SEEK_SET); - SimulateIOError( newOffset-- ); - if( newOffset!=offset ){ - if( newOffset == -1 ){ - ((unixFile*)id)->lastErrno = errno; - }else{ - ((unixFile*)id)->lastErrno = 0; - } - return -1; - } - got = osWrite(id->h, pBuf, cnt); - }while( got<0 && errno==EINTR ); -#endif - TIMER_END; - if( got<0 ){ - ((unixFile*)id)->lastErrno = errno; - } - - OSTRACE(("WRITE %-3d %5d %7lld %llu\n", id->h, got, offset, TIMER_ELAPSED)); - return got; -} - - -/* -** Write data from a buffer into a file. Return SQLITE_OK on success -** or some other error code on failure. -*/ -static int unixWrite( - sqlite3_file *id, - const void *pBuf, - int amt, - sqlite3_int64 offset -){ - unixFile *pFile = (unixFile*)id; - int wrote = 0; - assert( id ); - assert( amt>0 ); - - /* If this is a database file (not a journal, master-journal or temp - ** file), the bytes in the locking range should never be read or written. */ -#if 0 - assert( pFile->pUnused==0 - || offset>=PENDING_BYTE+512 - || offset+amt<=PENDING_BYTE - ); -#endif - -#ifndef NDEBUG - /* If we are doing a normal write to a database file (as opposed to - ** doing a hot-journal rollback or a write to some file other than a - ** normal database file) then record the fact that the database - ** has changed. If the transaction counter is modified, record that - ** fact too. - */ - if( pFile->inNormalWrite ){ - pFile->dbUpdate = 1; /* The database has been modified */ - if( offset<=24 && offset+amt>=27 ){ - int rc; - char oldCntr[4]; - SimulateIOErrorBenign(1); - rc = seekAndRead(pFile, 24, oldCntr, 4); - SimulateIOErrorBenign(0); - if( rc!=4 || memcmp(oldCntr, &((char*)pBuf)[24-offset], 4)!=0 ){ - pFile->transCntrChng = 1; /* The transaction counter has changed */ - } - } - } -#endif - - while( amt>0 && (wrote = seekAndWrite(pFile, offset, pBuf, amt))>0 ){ - amt -= wrote; - offset += wrote; - pBuf = &((char*)pBuf)[wrote]; - } - SimulateIOError(( wrote=(-1), amt=1 )); - SimulateDiskfullError(( wrote=0, amt=1 )); - - if( amt>0 ){ - if( wrote<0 && pFile->lastErrno!=ENOSPC ){ - /* lastErrno set by seekAndWrite */ - return SQLITE_IOERR_WRITE; - }else{ - pFile->lastErrno = 0; /* not a system error */ - return SQLITE_FULL; - } - } - - return SQLITE_OK; -} - -#ifdef SQLITE_TEST -/* -** Count the number of fullsyncs and normal syncs. This is used to test -** that syncs and fullsyncs are occurring at the right times. -*/ -int sqlite3_sync_count = 0; -int sqlite3_fullsync_count = 0; -#endif - -/* -** We do not trust systems to provide a working fdatasync(). Some do. -** Others do no. To be safe, we will stick with the (slightly slower) -** fsync(). If you know that your system does support fdatasync() correctly, -** then simply compile with -Dfdatasync=fdatasync -*/ -#if !defined(fdatasync) -# define fdatasync fsync -#endif - -/* -** Define HAVE_FULLFSYNC to 0 or 1 depending on whether or not -** the F_FULLFSYNC macro is defined. F_FULLFSYNC is currently -** only available on Mac OS X. But that could change. -*/ -#ifdef F_FULLFSYNC -# define HAVE_FULLFSYNC 1 -#else -# define HAVE_FULLFSYNC 0 -#endif - - -/* -** The fsync() system call does not work as advertised on many -** unix systems. The following procedure is an attempt to make -** it work better. -** -** The SQLITE_NO_SYNC macro disables all fsync()s. This is useful -** for testing when we want to run through the test suite quickly. -** You are strongly advised *not* to deploy with SQLITE_NO_SYNC -** enabled, however, since with SQLITE_NO_SYNC enabled, an OS crash -** or power failure will likely corrupt the database file. -** -** SQLite sets the dataOnly flag if the size of the file is unchanged. -** The idea behind dataOnly is that it should only write the file content -** to disk, not the inode. We only set dataOnly if the file size is -** unchanged since the file size is part of the inode. However, -** Ted Ts'o tells us that fdatasync() will also write the inode if the -** file size has changed. The only real difference between fdatasync() -** and fsync(), Ted tells us, is that fdatasync() will not flush the -** inode if the mtime or owner or other inode attributes have changed. -** We only care about the file size, not the other file attributes, so -** as far as SQLite is concerned, an fdatasync() is always adequate. -** So, we always use fdatasync() if it is available, regardless of -** the value of the dataOnly flag. -*/ -static int full_fsync(int fd, int fullSync, int dataOnly){ - int rc; - - /* The following "ifdef/elif/else/" block has the same structure as - ** the one below. It is replicated here solely to avoid cluttering - ** up the real code with the UNUSED_PARAMETER() macros. - */ -#ifdef SQLITE_NO_SYNC - UNUSED_PARAMETER(fd); - UNUSED_PARAMETER(fullSync); - UNUSED_PARAMETER(dataOnly); -#elif HAVE_FULLFSYNC - UNUSED_PARAMETER(dataOnly); -#else - UNUSED_PARAMETER(fullSync); - UNUSED_PARAMETER(dataOnly); -#endif - - /* Record the number of times that we do a normal fsync() and - ** FULLSYNC. This is used during testing to verify that this procedure - ** gets called with the correct arguments. - */ -#ifdef SQLITE_TEST - if( fullSync ) sqlite3_fullsync_count++; - sqlite3_sync_count++; -#endif - - /* If we compiled with the SQLITE_NO_SYNC flag, then syncing is a - ** no-op - */ -#ifdef SQLITE_NO_SYNC - rc = SQLITE_OK; -#elif HAVE_FULLFSYNC - if( fullSync ){ - rc = osFcntl(fd, F_FULLFSYNC, 0); - }else{ - rc = 1; - } - /* If the FULLFSYNC failed, fall back to attempting an fsync(). - ** It shouldn't be possible for fullfsync to fail on the local - ** file system (on OSX), so failure indicates that FULLFSYNC - ** isn't supported for this file system. So, attempt an fsync - ** and (for now) ignore the overhead of a superfluous fcntl call. - ** It'd be better to detect fullfsync support once and avoid - ** the fcntl call every time sync is called. - */ - if( rc ) rc = fsync(fd); - -#elif defined(__APPLE__) - /* fdatasync() on HFS+ doesn't yet flush the file size if it changed correctly - ** so currently we default to the macro that redefines fdatasync to fsync - */ - rc = fsync(fd); -#else - rc = fdatasync(fd); -#if OS_VXWORKS - if( rc==-1 && errno==ENOTSUP ){ - rc = fsync(fd); - } -#endif /* OS_VXWORKS */ -#endif /* ifdef SQLITE_NO_SYNC elif HAVE_FULLFSYNC */ - - if( OS_VXWORKS && rc!= -1 ){ - rc = 0; - } - return rc; -} - -/* -** Open a file descriptor to the directory containing file zFilename. -** If successful, *pFd is set to the opened file descriptor and -** SQLITE_OK is returned. If an error occurs, either SQLITE_NOMEM -** or SQLITE_CANTOPEN is returned and *pFd is set to an undefined -** value. -** -** The directory file descriptor is used for only one thing - to -** fsync() a directory to make sure file creation and deletion events -** are flushed to disk. Such fsyncs are not needed on newer -** journaling filesystems, but are required on older filesystems. -** -** This routine can be overridden using the xSetSysCall interface. -** The ability to override this routine was added in support of the -** chromium sandbox. Opening a directory is a security risk (we are -** told) so making it overrideable allows the chromium sandbox to -** replace this routine with a harmless no-op. To make this routine -** a no-op, replace it with a stub that returns SQLITE_OK but leaves -** *pFd set to a negative number. -** -** If SQLITE_OK is returned, the caller is responsible for closing -** the file descriptor *pFd using close(). -*/ -static int openDirectory(const char *zFilename, int *pFd){ - int ii; - int fd = -1; - char zDirname[MAX_PATHNAME+1]; - - sqlite3_snprintf(MAX_PATHNAME, zDirname, "%s", zFilename); - for(ii=(int)strlen(zDirname); ii>1 && zDirname[ii]!='/'; ii--); - if( ii>0 ){ - zDirname[ii] = '\0'; - fd = robust_open(zDirname, O_RDONLY|O_BINARY, 0); - if( fd>=0 ){ -#ifdef FD_CLOEXEC - osFcntl(fd, F_SETFD, osFcntl(fd, F_GETFD, 0) | FD_CLOEXEC); -#endif - OSTRACE(("OPENDIR %-3d %s\n", fd, zDirname)); - } - } - *pFd = fd; - return (fd>=0?SQLITE_OK:unixLogError(SQLITE_CANTOPEN_BKPT, "open", zDirname)); -} - -/* -** Make sure all writes to a particular file are committed to disk. -** -** If dataOnly==0 then both the file itself and its metadata (file -** size, access time, etc) are synced. If dataOnly!=0 then only the -** file data is synced. -** -** Under Unix, also make sure that the directory entry for the file -** has been created by fsync-ing the directory that contains the file. -** If we do not do this and we encounter a power failure, the directory -** entry for the journal might not exist after we reboot. The next -** SQLite to access the file will not know that the journal exists (because -** the directory entry for the journal was never created) and the transaction -** will not roll back - possibly leading to database corruption. -*/ -static int unixSync(sqlite3_file *id, int flags){ - int rc; - unixFile *pFile = (unixFile*)id; - - int isDataOnly = (flags&SQLITE_SYNC_DATAONLY); - int isFullsync = (flags&0x0F)==SQLITE_SYNC_FULL; - - /* Check that one of SQLITE_SYNC_NORMAL or FULL was passed */ - assert((flags&0x0F)==SQLITE_SYNC_NORMAL - || (flags&0x0F)==SQLITE_SYNC_FULL - ); - - /* Unix cannot, but some systems may return SQLITE_FULL from here. This - ** line is to test that doing so does not cause any problems. - */ - SimulateDiskfullError( return SQLITE_FULL ); - - assert( pFile ); - OSTRACE(("SYNC %-3d\n", pFile->h)); - rc = full_fsync(pFile->h, isFullsync, isDataOnly); - SimulateIOError( rc=1 ); - if( rc ){ - pFile->lastErrno = errno; - return unixLogError(SQLITE_IOERR_FSYNC, "full_fsync", pFile->zPath); - } - - /* Also fsync the directory containing the file if the DIRSYNC flag - ** is set. This is a one-time occurrance. Many systems (examples: AIX) - ** are unable to fsync a directory, so ignore errors on the fsync. - */ - if( pFile->ctrlFlags & UNIXFILE_DIRSYNC ){ - int dirfd; - OSTRACE(("DIRSYNC %s (have_fullfsync=%d fullsync=%d)\n", pFile->zPath, - HAVE_FULLFSYNC, isFullsync)); - rc = osOpenDirectory(pFile->zPath, &dirfd); - if( rc==SQLITE_OK && dirfd>=0 ){ - full_fsync(dirfd, 0, 0); - robust_close(pFile, dirfd, __LINE__); - }else if( rc==SQLITE_CANTOPEN ){ - rc = SQLITE_OK; - } - pFile->ctrlFlags &= ~UNIXFILE_DIRSYNC; - } - return rc; -} - -/* -** Truncate an open file to a specified size -*/ -static int unixTruncate(sqlite3_file *id, i64 nByte){ - unixFile *pFile = (unixFile *)id; - int rc; - assert( pFile ); - SimulateIOError( return SQLITE_IOERR_TRUNCATE ); - - /* If the user has configured a chunk-size for this file, truncate the - ** file so that it consists of an integer number of chunks (i.e. the - ** actual file size after the operation may be larger than the requested - ** size). - */ - if( pFile->szChunk ){ - nByte = ((nByte + pFile->szChunk - 1)/pFile->szChunk) * pFile->szChunk; - } - - rc = robust_ftruncate(pFile->h, (off_t)nByte); - if( rc ){ - pFile->lastErrno = errno; - return unixLogError(SQLITE_IOERR_TRUNCATE, "ftruncate", pFile->zPath); - }else{ -#ifndef NDEBUG - /* If we are doing a normal write to a database file (as opposed to - ** doing a hot-journal rollback or a write to some file other than a - ** normal database file) and we truncate the file to zero length, - ** that effectively updates the change counter. This might happen - ** when restoring a database using the backup API from a zero-length - ** source. - */ - if( pFile->inNormalWrite && nByte==0 ){ - pFile->transCntrChng = 1; - } -#endif - - return SQLITE_OK; - } -} - -/* -** Determine the current size of a file in bytes -*/ -static int unixFileSize(sqlite3_file *id, i64 *pSize){ - int rc; - struct stat buf; - assert( id ); - rc = osFstat(((unixFile*)id)->h, &buf); - SimulateIOError( rc=1 ); - if( rc!=0 ){ - ((unixFile*)id)->lastErrno = errno; - return SQLITE_IOERR_FSTAT; - } - *pSize = buf.st_size; - - /* When opening a zero-size database, the findInodeInfo() procedure - ** writes a single byte into that file in order to work around a bug - ** in the OS-X msdos filesystem. In order to avoid problems with upper - ** layers, we need to report this file size as zero even though it is - ** really 1. Ticket #3260. - */ - if( *pSize==1 ) *pSize = 0; - - - return SQLITE_OK; -} - -#if SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__) -/* -** Handler for proxy-locking file-control verbs. Defined below in the -** proxying locking division. -*/ -static int proxyFileControl(sqlite3_file*,int,void*); -#endif - -/* -** This function is called to handle the SQLITE_FCNTL_SIZE_HINT -** file-control operation. Enlarge the database to nBytes in size -** (rounded up to the next chunk-size). If the database is already -** nBytes or larger, this routine is a no-op. -*/ -static int fcntlSizeHint(unixFile *pFile, i64 nByte){ - if( pFile->szChunk>0 ){ - i64 nSize; /* Required file size */ - struct stat buf; /* Used to hold return values of fstat() */ - - if( osFstat(pFile->h, &buf) ) return SQLITE_IOERR_FSTAT; - - nSize = ((nByte+pFile->szChunk-1) / pFile->szChunk) * pFile->szChunk; - if( nSize>(i64)buf.st_size ){ - -#if defined(HAVE_POSIX_FALLOCATE) && HAVE_POSIX_FALLOCATE - /* The code below is handling the return value of osFallocate() - ** correctly. posix_fallocate() is defined to "returns zero on success, - ** or an error number on failure". See the manpage for details. */ - int err; - do{ - err = osFallocate(pFile->h, buf.st_size, nSize-buf.st_size); - }while( err==EINTR ); - if( err ) return SQLITE_IOERR_WRITE; -#else - /* If the OS does not have posix_fallocate(), fake it. First use - ** ftruncate() to set the file size, then write a single byte to - ** the last byte in each block within the extended region. This - ** is the same technique used by glibc to implement posix_fallocate() - ** on systems that do not have a real fallocate() system call. - */ - int nBlk = buf.st_blksize; /* File-system block size */ - i64 iWrite; /* Next offset to write to */ - - if( robust_ftruncate(pFile->h, nSize) ){ - pFile->lastErrno = errno; - return unixLogError(SQLITE_IOERR_TRUNCATE, "ftruncate", pFile->zPath); - } - iWrite = ((buf.st_size + 2*nBlk - 1)/nBlk)*nBlk-1; - while( iWriteeFileLock; - return SQLITE_OK; - } - case SQLITE_LAST_ERRNO: { - *(int*)pArg = pFile->lastErrno; - return SQLITE_OK; - } - case SQLITE_FCNTL_CHUNK_SIZE: { - pFile->szChunk = *(int *)pArg; - return SQLITE_OK; - } - case SQLITE_FCNTL_SIZE_HINT: { - int rc; - SimulateIOErrorBenign(1); - rc = fcntlSizeHint(pFile, *(i64 *)pArg); - SimulateIOErrorBenign(0); - return rc; - } - case SQLITE_FCNTL_PERSIST_WAL: { - int bPersist = *(int*)pArg; - if( bPersist<0 ){ - *(int*)pArg = (pFile->ctrlFlags & UNIXFILE_PERSIST_WAL)!=0; - }else if( bPersist==0 ){ - pFile->ctrlFlags &= ~UNIXFILE_PERSIST_WAL; - }else{ - pFile->ctrlFlags |= UNIXFILE_PERSIST_WAL; - } - return SQLITE_OK; - } -#ifndef NDEBUG - /* The pager calls this method to signal that it has done - ** a rollback and that the database is therefore unchanged and - ** it hence it is OK for the transaction change counter to be - ** unchanged. - */ - case SQLITE_FCNTL_DB_UNCHANGED: { - ((unixFile*)id)->dbUpdate = 0; - return SQLITE_OK; - } -#endif -#if SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__) - case SQLITE_SET_LOCKPROXYFILE: - case SQLITE_GET_LOCKPROXYFILE: { - return proxyFileControl(id,op,pArg); - } -#endif /* SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__) */ - case SQLITE_FCNTL_SYNC_OMITTED: { - return SQLITE_OK; /* A no-op */ - } - } - return SQLITE_NOTFOUND; -} - -/* -** Return the sector size in bytes of the underlying block device for -** the specified file. This is almost always 512 bytes, but may be -** larger for some devices. -** -** SQLite code assumes this function cannot fail. It also assumes that -** if two files are created in the same file-system directory (i.e. -** a database and its journal file) that the sector size will be the -** same for both. -*/ -static int unixSectorSize(sqlite3_file *NotUsed){ - UNUSED_PARAMETER(NotUsed); - return SQLITE_DEFAULT_SECTOR_SIZE; -} - -/* -** Return the device characteristics for the file. This is always 0 for unix. -*/ -static int unixDeviceCharacteristics(sqlite3_file *NotUsed){ - UNUSED_PARAMETER(NotUsed); - return 0; -} - -#ifndef SQLITE_OMIT_WAL - - -/* -** Object used to represent an shared memory buffer. -** -** When multiple threads all reference the same wal-index, each thread -** has its own unixShm object, but they all point to a single instance -** of this unixShmNode object. In other words, each wal-index is opened -** only once per process. -** -** Each unixShmNode object is connected to a single unixInodeInfo object. -** We could coalesce this object into unixInodeInfo, but that would mean -** every open file that does not use shared memory (in other words, most -** open files) would have to carry around this extra information. So -** the unixInodeInfo object contains a pointer to this unixShmNode object -** and the unixShmNode object is created only when needed. -** -** unixMutexHeld() must be true when creating or destroying -** this object or while reading or writing the following fields: -** -** nRef -** -** The following fields are read-only after the object is created: -** -** fid -** zFilename -** -** Either unixShmNode.mutex must be held or unixShmNode.nRef==0 and -** unixMutexHeld() is true when reading or writing any other field -** in this structure. -*/ -struct unixShmNode { - unixInodeInfo *pInode; /* unixInodeInfo that owns this SHM node */ - sqlite3_mutex *mutex; /* Mutex to access this object */ - char *zFilename; /* Name of the mmapped file */ - int h; /* Open file descriptor */ - int szRegion; /* Size of shared-memory regions */ - u16 nRegion; /* Size of array apRegion */ - u8 isReadonly; /* True if read-only */ - char **apRegion; /* Array of mapped shared-memory regions */ - int nRef; /* Number of unixShm objects pointing to this */ - unixShm *pFirst; /* All unixShm objects pointing to this */ -#ifdef SQLITE_DEBUG - u8 exclMask; /* Mask of exclusive locks held */ - u8 sharedMask; /* Mask of shared locks held */ - u8 nextShmId; /* Next available unixShm.id value */ -#endif -}; - -/* -** Structure used internally by this VFS to record the state of an -** open shared memory connection. -** -** The following fields are initialized when this object is created and -** are read-only thereafter: -** -** unixShm.pFile -** unixShm.id -** -** All other fields are read/write. The unixShm.pFile->mutex must be held -** while accessing any read/write fields. -*/ -struct unixShm { - unixShmNode *pShmNode; /* The underlying unixShmNode object */ - unixShm *pNext; /* Next unixShm with the same unixShmNode */ - u8 hasMutex; /* True if holding the unixShmNode mutex */ - u8 id; /* Id of this connection within its unixShmNode */ - u16 sharedMask; /* Mask of shared locks held */ - u16 exclMask; /* Mask of exclusive locks held */ -}; - -/* -** Constants used for locking -*/ -#define UNIX_SHM_BASE ((22+SQLITE_SHM_NLOCK)*4) /* first lock byte */ -#define UNIX_SHM_DMS (UNIX_SHM_BASE+SQLITE_SHM_NLOCK) /* deadman switch */ - -/* -** Apply posix advisory locks for all bytes from ofst through ofst+n-1. -** -** Locks block if the mask is exactly UNIX_SHM_C and are non-blocking -** otherwise. -*/ -static int unixShmSystemLock( - unixShmNode *pShmNode, /* Apply locks to this open shared-memory segment */ - int lockType, /* F_UNLCK, F_RDLCK, or F_WRLCK */ - int ofst, /* First byte of the locking range */ - int n /* Number of bytes to lock */ -){ - struct flock f; /* The posix advisory locking structure */ - int rc = SQLITE_OK; /* Result code form fcntl() */ - - /* Access to the unixShmNode object is serialized by the caller */ - assert( sqlite3_mutex_held(pShmNode->mutex) || pShmNode->nRef==0 ); - - /* Shared locks never span more than one byte */ - assert( n==1 || lockType!=F_RDLCK ); - - /* Locks are within range */ - assert( n>=1 && nh>=0 ){ - /* Initialize the locking parameters */ - memset(&f, 0, sizeof(f)); - f.l_type = lockType; - f.l_whence = SEEK_SET; - f.l_start = ofst; - f.l_len = n; - - rc = osFcntl(pShmNode->h, F_SETLK, &f); - rc = (rc!=(-1)) ? SQLITE_OK : SQLITE_BUSY; - } - - /* Update the global lock state and do debug tracing */ -#ifdef SQLITE_DEBUG - { u16 mask; - OSTRACE(("SHM-LOCK ")); - mask = (1<<(ofst+n)) - (1<exclMask &= ~mask; - pShmNode->sharedMask &= ~mask; - }else if( lockType==F_RDLCK ){ - OSTRACE(("read-lock %d ok", ofst)); - pShmNode->exclMask &= ~mask; - pShmNode->sharedMask |= mask; - }else{ - assert( lockType==F_WRLCK ); - OSTRACE(("write-lock %d ok", ofst)); - pShmNode->exclMask |= mask; - pShmNode->sharedMask &= ~mask; - } - }else{ - if( lockType==F_UNLCK ){ - OSTRACE(("unlock %d failed", ofst)); - }else if( lockType==F_RDLCK ){ - OSTRACE(("read-lock failed")); - }else{ - assert( lockType==F_WRLCK ); - OSTRACE(("write-lock %d failed", ofst)); - } - } - OSTRACE((" - afterwards %03x,%03x\n", - pShmNode->sharedMask, pShmNode->exclMask)); - } -#endif - - return rc; -} - - -/* -** Purge the unixShmNodeList list of all entries with unixShmNode.nRef==0. -** -** This is not a VFS shared-memory method; it is a utility function called -** by VFS shared-memory methods. -*/ -static void unixShmPurge(unixFile *pFd){ - unixShmNode *p = pFd->pInode->pShmNode; - assert( unixMutexHeld() ); - if( p && p->nRef==0 ){ - int i; - assert( p->pInode==pFd->pInode ); - sqlite3_mutex_free(p->mutex); - for(i=0; inRegion; i++){ - if( p->h>=0 ){ - munmap(p->apRegion[i], p->szRegion); - }else{ - sqlite3_free(p->apRegion[i]); - } - } - sqlite3_free(p->apRegion); - if( p->h>=0 ){ - robust_close(pFd, p->h, __LINE__); - p->h = -1; - } - p->pInode->pShmNode = 0; - sqlite3_free(p); - } -} - -/* -** Open a shared-memory area associated with open database file pDbFd. -** This particular implementation uses mmapped files. -** -** The file used to implement shared-memory is in the same directory -** as the open database file and has the same name as the open database -** file with the "-shm" suffix added. For example, if the database file -** is "/home/user1/config.db" then the file that is created and mmapped -** for shared memory will be called "/home/user1/config.db-shm". -** -** Another approach to is to use files in /dev/shm or /dev/tmp or an -** some other tmpfs mount. But if a file in a different directory -** from the database file is used, then differing access permissions -** or a chroot() might cause two different processes on the same -** database to end up using different files for shared memory - -** meaning that their memory would not really be shared - resulting -** in database corruption. Nevertheless, this tmpfs file usage -** can be enabled at compile-time using -DSQLITE_SHM_DIRECTORY="/dev/shm" -** or the equivalent. The use of the SQLITE_SHM_DIRECTORY compile-time -** option results in an incompatible build of SQLite; builds of SQLite -** that with differing SQLITE_SHM_DIRECTORY settings attempt to use the -** same database file at the same time, database corruption will likely -** result. The SQLITE_SHM_DIRECTORY compile-time option is considered -** "unsupported" and may go away in a future SQLite release. -** -** When opening a new shared-memory file, if no other instances of that -** file are currently open, in this process or in other processes, then -** the file must be truncated to zero length or have its header cleared. -** -** If the original database file (pDbFd) is using the "unix-excl" VFS -** that means that an exclusive lock is held on the database file and -** that no other processes are able to read or write the database. In -** that case, we do not really need shared memory. No shared memory -** file is created. The shared memory will be simulated with heap memory. -*/ -static int unixOpenSharedMemory(unixFile *pDbFd){ - struct unixShm *p = 0; /* The connection to be opened */ - struct unixShmNode *pShmNode; /* The underlying mmapped file */ - int rc; /* Result code */ - unixInodeInfo *pInode; /* The inode of fd */ - char *zShmFilename; /* Name of the file used for SHM */ - int nShmFilename; /* Size of the SHM filename in bytes */ - - /* Allocate space for the new unixShm object. */ - p = sqlite3_malloc( sizeof(*p) ); - if( p==0 ) return SQLITE_NOMEM; - memset(p, 0, sizeof(*p)); - assert( pDbFd->pShm==0 ); - - /* Check to see if a unixShmNode object already exists. Reuse an existing - ** one if present. Create a new one if necessary. - */ - unixEnterMutex(); - pInode = pDbFd->pInode; - pShmNode = pInode->pShmNode; - if( pShmNode==0 ){ - struct stat sStat; /* fstat() info for database file */ - - /* Call fstat() to figure out the permissions on the database file. If - ** a new *-shm file is created, an attempt will be made to create it - ** with the same permissions. The actual permissions the file is created - ** with are subject to the current umask setting. - */ - if( osFstat(pDbFd->h, &sStat) && pInode->bProcessLock==0 ){ - rc = SQLITE_IOERR_FSTAT; - goto shm_open_err; - } - -#ifdef SQLITE_SHM_DIRECTORY - nShmFilename = sizeof(SQLITE_SHM_DIRECTORY) + 30; -#else - nShmFilename = 5 + (int)strlen(pDbFd->zPath); -#endif - pShmNode = sqlite3_malloc( sizeof(*pShmNode) + nShmFilename ); - if( pShmNode==0 ){ - rc = SQLITE_NOMEM; - goto shm_open_err; - } - memset(pShmNode, 0, sizeof(*pShmNode)); - zShmFilename = pShmNode->zFilename = (char*)&pShmNode[1]; -#ifdef SQLITE_SHM_DIRECTORY - sqlite3_snprintf(nShmFilename, zShmFilename, - SQLITE_SHM_DIRECTORY "/sqlite-shm-%x-%x", - (u32)sStat.st_ino, (u32)sStat.st_dev); -#else - sqlite3_snprintf(nShmFilename, zShmFilename, "%s-shm", pDbFd->zPath); - sqlite3FileSuffix3(pDbFd->zPath, zShmFilename); -#endif - pShmNode->h = -1; - pDbFd->pInode->pShmNode = pShmNode; - pShmNode->pInode = pDbFd->pInode; - pShmNode->mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_FAST); - if( pShmNode->mutex==0 ){ - rc = SQLITE_NOMEM; - goto shm_open_err; - } - - if( pInode->bProcessLock==0 ){ - const char *zRO; - int openFlags = O_RDWR | O_CREAT; - zRO = sqlite3_uri_parameter(pDbFd->zPath, "readonly_shm"); - if( zRO && sqlite3GetBoolean(zRO) ){ - openFlags = O_RDONLY; - pShmNode->isReadonly = 1; - } - pShmNode->h = robust_open(zShmFilename, openFlags, (sStat.st_mode&0777)); - if( pShmNode->h<0 ){ - if( pShmNode->h<0 ){ - rc = unixLogError(SQLITE_CANTOPEN_BKPT, "open", zShmFilename); - goto shm_open_err; - } - } - - /* Check to see if another process is holding the dead-man switch. - ** If not, truncate the file to zero length. - */ - rc = SQLITE_OK; - if( unixShmSystemLock(pShmNode, F_WRLCK, UNIX_SHM_DMS, 1)==SQLITE_OK ){ - if( robust_ftruncate(pShmNode->h, 0) ){ - rc = unixLogError(SQLITE_IOERR_SHMOPEN, "ftruncate", zShmFilename); - } - } - if( rc==SQLITE_OK ){ - rc = unixShmSystemLock(pShmNode, F_RDLCK, UNIX_SHM_DMS, 1); - } - if( rc ) goto shm_open_err; - } - } - - /* Make the new connection a child of the unixShmNode */ - p->pShmNode = pShmNode; -#ifdef SQLITE_DEBUG - p->id = pShmNode->nextShmId++; -#endif - pShmNode->nRef++; - pDbFd->pShm = p; - unixLeaveMutex(); - - /* The reference count on pShmNode has already been incremented under - ** the cover of the unixEnterMutex() mutex and the pointer from the - ** new (struct unixShm) object to the pShmNode has been set. All that is - ** left to do is to link the new object into the linked list starting - ** at pShmNode->pFirst. This must be done while holding the pShmNode->mutex - ** mutex. - */ - sqlite3_mutex_enter(pShmNode->mutex); - p->pNext = pShmNode->pFirst; - pShmNode->pFirst = p; - sqlite3_mutex_leave(pShmNode->mutex); - return SQLITE_OK; - - /* Jump here on any error */ -shm_open_err: - unixShmPurge(pDbFd); /* This call frees pShmNode if required */ - sqlite3_free(p); - unixLeaveMutex(); - return rc; -} - -/* -** This function is called to obtain a pointer to region iRegion of the -** shared-memory associated with the database file fd. Shared-memory regions -** are numbered starting from zero. Each shared-memory region is szRegion -** bytes in size. -** -** If an error occurs, an error code is returned and *pp is set to NULL. -** -** Otherwise, if the bExtend parameter is 0 and the requested shared-memory -** region has not been allocated (by any client, including one running in a -** separate process), then *pp is set to NULL and SQLITE_OK returned. If -** bExtend is non-zero and the requested shared-memory region has not yet -** been allocated, it is allocated by this function. -** -** If the shared-memory region has already been allocated or is allocated by -** this call as described above, then it is mapped into this processes -** address space (if it is not already), *pp is set to point to the mapped -** memory and SQLITE_OK returned. -*/ -static int unixShmMap( - sqlite3_file *fd, /* Handle open on database file */ - int iRegion, /* Region to retrieve */ - int szRegion, /* Size of regions */ - int bExtend, /* True to extend file if necessary */ - void volatile **pp /* OUT: Mapped memory */ -){ - unixFile *pDbFd = (unixFile*)fd; - unixShm *p; - unixShmNode *pShmNode; - int rc = SQLITE_OK; - - /* If the shared-memory file has not yet been opened, open it now. */ - if( pDbFd->pShm==0 ){ - rc = unixOpenSharedMemory(pDbFd); - if( rc!=SQLITE_OK ) return rc; - } - - p = pDbFd->pShm; - pShmNode = p->pShmNode; - sqlite3_mutex_enter(pShmNode->mutex); - assert( szRegion==pShmNode->szRegion || pShmNode->nRegion==0 ); - assert( pShmNode->pInode==pDbFd->pInode ); - assert( pShmNode->h>=0 || pDbFd->pInode->bProcessLock==1 ); - assert( pShmNode->h<0 || pDbFd->pInode->bProcessLock==0 ); - - if( pShmNode->nRegion<=iRegion ){ - char **apNew; /* New apRegion[] array */ - int nByte = (iRegion+1)*szRegion; /* Minimum required file size */ - struct stat sStat; /* Used by fstat() */ - - pShmNode->szRegion = szRegion; - - if( pShmNode->h>=0 ){ - /* The requested region is not mapped into this processes address space. - ** Check to see if it has been allocated (i.e. if the wal-index file is - ** large enough to contain the requested region). - */ - if( osFstat(pShmNode->h, &sStat) ){ - rc = SQLITE_IOERR_SHMSIZE; - goto shmpage_out; - } - - if( sStat.st_sizeh, nByte) ){ - rc = unixLogError(SQLITE_IOERR_SHMSIZE, "ftruncate", - pShmNode->zFilename); - goto shmpage_out; - } - } - } - - /* Map the requested memory region into this processes address space. */ - apNew = (char **)sqlite3_realloc( - pShmNode->apRegion, (iRegion+1)*sizeof(char *) - ); - if( !apNew ){ - rc = SQLITE_IOERR_NOMEM; - goto shmpage_out; - } - pShmNode->apRegion = apNew; - while(pShmNode->nRegion<=iRegion){ - void *pMem; - if( pShmNode->h>=0 ){ - pMem = mmap(0, szRegion, - pShmNode->isReadonly ? PROT_READ : PROT_READ|PROT_WRITE, - MAP_SHARED, pShmNode->h, pShmNode->nRegion*szRegion - ); - if( pMem==MAP_FAILED ){ - rc = unixLogError(SQLITE_IOERR_SHMMAP, "mmap", pShmNode->zFilename); - goto shmpage_out; - } - }else{ - pMem = sqlite3_malloc(szRegion); - if( pMem==0 ){ - rc = SQLITE_NOMEM; - goto shmpage_out; - } - memset(pMem, 0, szRegion); - } - pShmNode->apRegion[pShmNode->nRegion] = pMem; - pShmNode->nRegion++; - } - } - -shmpage_out: - if( pShmNode->nRegion>iRegion ){ - *pp = pShmNode->apRegion[iRegion]; - }else{ - *pp = 0; - } - if( pShmNode->isReadonly && rc==SQLITE_OK ) rc = SQLITE_READONLY; - sqlite3_mutex_leave(pShmNode->mutex); - return rc; -} - -/* -** Change the lock state for a shared-memory segment. -** -** Note that the relationship between SHAREd and EXCLUSIVE locks is a little -** different here than in posix. In xShmLock(), one can go from unlocked -** to shared and back or from unlocked to exclusive and back. But one may -** not go from shared to exclusive or from exclusive to shared. -*/ -static int unixShmLock( - sqlite3_file *fd, /* Database file holding the shared memory */ - int ofst, /* First lock to acquire or release */ - int n, /* Number of locks to acquire or release */ - int flags /* What to do with the lock */ -){ - unixFile *pDbFd = (unixFile*)fd; /* Connection holding shared memory */ - unixShm *p = pDbFd->pShm; /* The shared memory being locked */ - unixShm *pX; /* For looping over all siblings */ - unixShmNode *pShmNode = p->pShmNode; /* The underlying file iNode */ - int rc = SQLITE_OK; /* Result code */ - u16 mask; /* Mask of locks to take or release */ - - assert( pShmNode==pDbFd->pInode->pShmNode ); - assert( pShmNode->pInode==pDbFd->pInode ); - assert( ofst>=0 && ofst+n<=SQLITE_SHM_NLOCK ); - assert( n>=1 ); - assert( flags==(SQLITE_SHM_LOCK | SQLITE_SHM_SHARED) - || flags==(SQLITE_SHM_LOCK | SQLITE_SHM_EXCLUSIVE) - || flags==(SQLITE_SHM_UNLOCK | SQLITE_SHM_SHARED) - || flags==(SQLITE_SHM_UNLOCK | SQLITE_SHM_EXCLUSIVE) ); - assert( n==1 || (flags & SQLITE_SHM_EXCLUSIVE)!=0 ); - assert( pShmNode->h>=0 || pDbFd->pInode->bProcessLock==1 ); - assert( pShmNode->h<0 || pDbFd->pInode->bProcessLock==0 ); - - mask = (1<<(ofst+n)) - (1<1 || mask==(1<mutex); - if( flags & SQLITE_SHM_UNLOCK ){ - u16 allMask = 0; /* Mask of locks held by siblings */ - - /* See if any siblings hold this same lock */ - for(pX=pShmNode->pFirst; pX; pX=pX->pNext){ - if( pX==p ) continue; - assert( (pX->exclMask & (p->exclMask|p->sharedMask))==0 ); - allMask |= pX->sharedMask; - } - - /* Unlock the system-level locks */ - if( (mask & allMask)==0 ){ - rc = unixShmSystemLock(pShmNode, F_UNLCK, ofst+UNIX_SHM_BASE, n); - }else{ - rc = SQLITE_OK; - } - - /* Undo the local locks */ - if( rc==SQLITE_OK ){ - p->exclMask &= ~mask; - p->sharedMask &= ~mask; - } - }else if( flags & SQLITE_SHM_SHARED ){ - u16 allShared = 0; /* Union of locks held by connections other than "p" */ - - /* Find out which shared locks are already held by sibling connections. - ** If any sibling already holds an exclusive lock, go ahead and return - ** SQLITE_BUSY. - */ - for(pX=pShmNode->pFirst; pX; pX=pX->pNext){ - if( (pX->exclMask & mask)!=0 ){ - rc = SQLITE_BUSY; - break; - } - allShared |= pX->sharedMask; - } - - /* Get shared locks at the system level, if necessary */ - if( rc==SQLITE_OK ){ - if( (allShared & mask)==0 ){ - rc = unixShmSystemLock(pShmNode, F_RDLCK, ofst+UNIX_SHM_BASE, n); - }else{ - rc = SQLITE_OK; - } - } - - /* Get the local shared locks */ - if( rc==SQLITE_OK ){ - p->sharedMask |= mask; - } - }else{ - /* Make sure no sibling connections hold locks that will block this - ** lock. If any do, return SQLITE_BUSY right away. - */ - for(pX=pShmNode->pFirst; pX; pX=pX->pNext){ - if( (pX->exclMask & mask)!=0 || (pX->sharedMask & mask)!=0 ){ - rc = SQLITE_BUSY; - break; - } - } - - /* Get the exclusive locks at the system level. Then if successful - ** also mark the local connection as being locked. - */ - if( rc==SQLITE_OK ){ - rc = unixShmSystemLock(pShmNode, F_WRLCK, ofst+UNIX_SHM_BASE, n); - if( rc==SQLITE_OK ){ - assert( (p->sharedMask & mask)==0 ); - p->exclMask |= mask; - } - } - } - sqlite3_mutex_leave(pShmNode->mutex); - OSTRACE(("SHM-LOCK shmid-%d, pid-%d got %03x,%03x\n", - p->id, getpid(), p->sharedMask, p->exclMask)); - return rc; -} - -/* -** Implement a memory barrier or memory fence on shared memory. -** -** All loads and stores begun before the barrier must complete before -** any load or store begun after the barrier. -*/ -static void unixShmBarrier( - sqlite3_file *fd /* Database file holding the shared memory */ -){ - UNUSED_PARAMETER(fd); - unixEnterMutex(); - unixLeaveMutex(); -} - -/* -** Close a connection to shared-memory. Delete the underlying -** storage if deleteFlag is true. -** -** If there is no shared memory associated with the connection then this -** routine is a harmless no-op. -*/ -static int unixShmUnmap( - sqlite3_file *fd, /* The underlying database file */ - int deleteFlag /* Delete shared-memory if true */ -){ - unixShm *p; /* The connection to be closed */ - unixShmNode *pShmNode; /* The underlying shared-memory file */ - unixShm **pp; /* For looping over sibling connections */ - unixFile *pDbFd; /* The underlying database file */ - - pDbFd = (unixFile*)fd; - p = pDbFd->pShm; - if( p==0 ) return SQLITE_OK; - pShmNode = p->pShmNode; - - assert( pShmNode==pDbFd->pInode->pShmNode ); - assert( pShmNode->pInode==pDbFd->pInode ); - - /* Remove connection p from the set of connections associated - ** with pShmNode */ - sqlite3_mutex_enter(pShmNode->mutex); - for(pp=&pShmNode->pFirst; (*pp)!=p; pp = &(*pp)->pNext){} - *pp = p->pNext; - - /* Free the connection p */ - sqlite3_free(p); - pDbFd->pShm = 0; - sqlite3_mutex_leave(pShmNode->mutex); - - /* If pShmNode->nRef has reached 0, then close the underlying - ** shared-memory file, too */ - unixEnterMutex(); - assert( pShmNode->nRef>0 ); - pShmNode->nRef--; - if( pShmNode->nRef==0 ){ - if( deleteFlag && pShmNode->h>=0 ) osUnlink(pShmNode->zFilename); - unixShmPurge(pDbFd); - } - unixLeaveMutex(); - - return SQLITE_OK; -} - - -#else -# define unixShmMap 0 -# define unixShmLock 0 -# define unixShmBarrier 0 -# define unixShmUnmap 0 -#endif /* #ifndef SQLITE_OMIT_WAL */ - -/* -** Here ends the implementation of all sqlite3_file methods. -** -********************** End sqlite3_file Methods ******************************* -******************************************************************************/ - -/* -** This division contains definitions of sqlite3_io_methods objects that -** implement various file locking strategies. It also contains definitions -** of "finder" functions. A finder-function is used to locate the appropriate -** sqlite3_io_methods object for a particular database file. The pAppData -** field of the sqlite3_vfs VFS objects are initialized to be pointers to -** the correct finder-function for that VFS. -** -** Most finder functions return a pointer to a fixed sqlite3_io_methods -** object. The only interesting finder-function is autolockIoFinder, which -** looks at the filesystem type and tries to guess the best locking -** strategy from that. -** -** For finder-funtion F, two objects are created: -** -** (1) The real finder-function named "FImpt()". -** -** (2) A constant pointer to this function named just "F". -** -** -** A pointer to the F pointer is used as the pAppData value for VFS -** objects. We have to do this instead of letting pAppData point -** directly at the finder-function since C90 rules prevent a void* -** from be cast into a function pointer. -** -** -** Each instance of this macro generates two objects: -** -** * A constant sqlite3_io_methods object call METHOD that has locking -** methods CLOSE, LOCK, UNLOCK, CKRESLOCK. -** -** * An I/O method finder function called FINDER that returns a pointer -** to the METHOD object in the previous bullet. -*/ -#define IOMETHODS(FINDER, METHOD, VERSION, CLOSE, LOCK, UNLOCK, CKLOCK) \ -static const sqlite3_io_methods METHOD = { \ - VERSION, /* iVersion */ \ - CLOSE, /* xClose */ \ - unixRead, /* xRead */ \ - unixWrite, /* xWrite */ \ - unixTruncate, /* xTruncate */ \ - unixSync, /* xSync */ \ - unixFileSize, /* xFileSize */ \ - LOCK, /* xLock */ \ - UNLOCK, /* xUnlock */ \ - CKLOCK, /* xCheckReservedLock */ \ - unixFileControl, /* xFileControl */ \ - unixSectorSize, /* xSectorSize */ \ - unixDeviceCharacteristics, /* xDeviceCapabilities */ \ - unixShmMap, /* xShmMap */ \ - unixShmLock, /* xShmLock */ \ - unixShmBarrier, /* xShmBarrier */ \ - unixShmUnmap /* xShmUnmap */ \ -}; \ -static const sqlite3_io_methods *FINDER##Impl(const char *z, unixFile *p){ \ - UNUSED_PARAMETER(z); UNUSED_PARAMETER(p); \ - return &METHOD; \ -} \ -static const sqlite3_io_methods *(*const FINDER)(const char*,unixFile *p) \ - = FINDER##Impl; - -/* -** Here are all of the sqlite3_io_methods objects for each of the -** locking strategies. Functions that return pointers to these methods -** are also created. -*/ -IOMETHODS( - posixIoFinder, /* Finder function name */ - posixIoMethods, /* sqlite3_io_methods object name */ - 2, /* shared memory is enabled */ - unixClose, /* xClose method */ - unixLock, /* xLock method */ - unixUnlock, /* xUnlock method */ - unixCheckReservedLock /* xCheckReservedLock method */ -) -IOMETHODS( - nolockIoFinder, /* Finder function name */ - nolockIoMethods, /* sqlite3_io_methods object name */ - 1, /* shared memory is disabled */ - nolockClose, /* xClose method */ - nolockLock, /* xLock method */ - nolockUnlock, /* xUnlock method */ - nolockCheckReservedLock /* xCheckReservedLock method */ -) -IOMETHODS( - dotlockIoFinder, /* Finder function name */ - dotlockIoMethods, /* sqlite3_io_methods object name */ - 1, /* shared memory is disabled */ - dotlockClose, /* xClose method */ - dotlockLock, /* xLock method */ - dotlockUnlock, /* xUnlock method */ - dotlockCheckReservedLock /* xCheckReservedLock method */ -) - -#if SQLITE_ENABLE_LOCKING_STYLE && !OS_VXWORKS -IOMETHODS( - flockIoFinder, /* Finder function name */ - flockIoMethods, /* sqlite3_io_methods object name */ - 1, /* shared memory is disabled */ - flockClose, /* xClose method */ - flockLock, /* xLock method */ - flockUnlock, /* xUnlock method */ - flockCheckReservedLock /* xCheckReservedLock method */ -) -#endif - -#if OS_VXWORKS -IOMETHODS( - semIoFinder, /* Finder function name */ - semIoMethods, /* sqlite3_io_methods object name */ - 1, /* shared memory is disabled */ - semClose, /* xClose method */ - semLock, /* xLock method */ - semUnlock, /* xUnlock method */ - semCheckReservedLock /* xCheckReservedLock method */ -) -#endif - -#if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE -IOMETHODS( - afpIoFinder, /* Finder function name */ - afpIoMethods, /* sqlite3_io_methods object name */ - 1, /* shared memory is disabled */ - afpClose, /* xClose method */ - afpLock, /* xLock method */ - afpUnlock, /* xUnlock method */ - afpCheckReservedLock /* xCheckReservedLock method */ -) -#endif - -/* -** The proxy locking method is a "super-method" in the sense that it -** opens secondary file descriptors for the conch and lock files and -** it uses proxy, dot-file, AFP, and flock() locking methods on those -** secondary files. For this reason, the division that implements -** proxy locking is located much further down in the file. But we need -** to go ahead and define the sqlite3_io_methods and finder function -** for proxy locking here. So we forward declare the I/O methods. -*/ -#if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE -static int proxyClose(sqlite3_file*); -static int proxyLock(sqlite3_file*, int); -static int proxyUnlock(sqlite3_file*, int); -static int proxyCheckReservedLock(sqlite3_file*, int*); -IOMETHODS( - proxyIoFinder, /* Finder function name */ - proxyIoMethods, /* sqlite3_io_methods object name */ - 1, /* shared memory is disabled */ - proxyClose, /* xClose method */ - proxyLock, /* xLock method */ - proxyUnlock, /* xUnlock method */ - proxyCheckReservedLock /* xCheckReservedLock method */ -) -#endif - -/* nfs lockd on OSX 10.3+ doesn't clear write locks when a read lock is set */ -#if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE -IOMETHODS( - nfsIoFinder, /* Finder function name */ - nfsIoMethods, /* sqlite3_io_methods object name */ - 1, /* shared memory is disabled */ - unixClose, /* xClose method */ - unixLock, /* xLock method */ - nfsUnlock, /* xUnlock method */ - unixCheckReservedLock /* xCheckReservedLock method */ -) -#endif - -#if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE -/* -** This "finder" function attempts to determine the best locking strategy -** for the database file "filePath". It then returns the sqlite3_io_methods -** object that implements that strategy. -** -** This is for MacOSX only. -*/ -static const sqlite3_io_methods *autolockIoFinderImpl( - const char *filePath, /* name of the database file */ - unixFile *pNew /* open file object for the database file */ -){ - static const struct Mapping { - const char *zFilesystem; /* Filesystem type name */ - const sqlite3_io_methods *pMethods; /* Appropriate locking method */ - } aMap[] = { - { "hfs", &posixIoMethods }, - { "ufs", &posixIoMethods }, - { "afpfs", &afpIoMethods }, - { "smbfs", &afpIoMethods }, - { "webdav", &nolockIoMethods }, - { 0, 0 } - }; - int i; - struct statfs fsInfo; - struct flock lockInfo; - - if( !filePath ){ - /* If filePath==NULL that means we are dealing with a transient file - ** that does not need to be locked. */ - return &nolockIoMethods; - } - if( statfs(filePath, &fsInfo) != -1 ){ - if( fsInfo.f_flags & MNT_RDONLY ){ - return &nolockIoMethods; - } - for(i=0; aMap[i].zFilesystem; i++){ - if( strcmp(fsInfo.f_fstypename, aMap[i].zFilesystem)==0 ){ - return aMap[i].pMethods; - } - } - } - - /* Default case. Handles, amongst others, "nfs". - ** Test byte-range lock using fcntl(). If the call succeeds, - ** assume that the file-system supports POSIX style locks. - */ - lockInfo.l_len = 1; - lockInfo.l_start = 0; - lockInfo.l_whence = SEEK_SET; - lockInfo.l_type = F_RDLCK; - if( osFcntl(pNew->h, F_GETLK, &lockInfo)!=-1 ) { - if( strcmp(fsInfo.f_fstypename, "nfs")==0 ){ - return &nfsIoMethods; - } else { - return &posixIoMethods; - } - }else{ - return &dotlockIoMethods; - } -} -static const sqlite3_io_methods - *(*const autolockIoFinder)(const char*,unixFile*) = autolockIoFinderImpl; - -#endif /* defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE */ - -#if OS_VXWORKS && SQLITE_ENABLE_LOCKING_STYLE -/* -** This "finder" function attempts to determine the best locking strategy -** for the database file "filePath". It then returns the sqlite3_io_methods -** object that implements that strategy. -** -** This is for VXWorks only. -*/ -static const sqlite3_io_methods *autolockIoFinderImpl( - const char *filePath, /* name of the database file */ - unixFile *pNew /* the open file object */ -){ - struct flock lockInfo; - - if( !filePath ){ - /* If filePath==NULL that means we are dealing with a transient file - ** that does not need to be locked. */ - return &nolockIoMethods; - } - - /* Test if fcntl() is supported and use POSIX style locks. - ** Otherwise fall back to the named semaphore method. - */ - lockInfo.l_len = 1; - lockInfo.l_start = 0; - lockInfo.l_whence = SEEK_SET; - lockInfo.l_type = F_RDLCK; - if( osFcntl(pNew->h, F_GETLK, &lockInfo)!=-1 ) { - return &posixIoMethods; - }else{ - return &semIoMethods; - } -} -static const sqlite3_io_methods - *(*const autolockIoFinder)(const char*,unixFile*) = autolockIoFinderImpl; - -#endif /* OS_VXWORKS && SQLITE_ENABLE_LOCKING_STYLE */ - -/* -** An abstract type for a pointer to a IO method finder function: -*/ -typedef const sqlite3_io_methods *(*finder_type)(const char*,unixFile*); - - -/**************************************************************************** -**************************** sqlite3_vfs methods **************************** -** -** This division contains the implementation of methods on the -** sqlite3_vfs object. -*/ - -/* -** Initialize the contents of the unixFile structure pointed to by pId. -*/ -static int fillInUnixFile( - sqlite3_vfs *pVfs, /* Pointer to vfs object */ - int h, /* Open file descriptor of file being opened */ - int syncDir, /* True to sync directory on first sync */ - sqlite3_file *pId, /* Write to the unixFile structure here */ - const char *zFilename, /* Name of the file being opened */ - int noLock, /* Omit locking if true */ - int isDelete, /* Delete on close if true */ - int isReadOnly /* True if the file is opened read-only */ -){ - const sqlite3_io_methods *pLockingStyle; - unixFile *pNew = (unixFile *)pId; - int rc = SQLITE_OK; - - assert( pNew->pInode==NULL ); - - /* Parameter isDelete is only used on vxworks. Express this explicitly - ** here to prevent compiler warnings about unused parameters. - */ - UNUSED_PARAMETER(isDelete); - - /* Usually the path zFilename should not be a relative pathname. The - ** exception is when opening the proxy "conch" file in builds that - ** include the special Apple locking styles. - */ -#if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE - assert( zFilename==0 || zFilename[0]=='/' - || pVfs->pAppData==(void*)&autolockIoFinder ); -#else - assert( zFilename==0 || zFilename[0]=='/' ); -#endif - - /* No locking occurs in temporary files */ - assert( zFilename!=0 || noLock ); - - OSTRACE(("OPEN %-3d %s\n", h, zFilename)); - pNew->h = h; - pNew->zPath = zFilename; - if( memcmp(pVfs->zName,"unix-excl",10)==0 ){ - pNew->ctrlFlags = UNIXFILE_EXCL; - }else{ - pNew->ctrlFlags = 0; - } - if( isReadOnly ){ - pNew->ctrlFlags |= UNIXFILE_RDONLY; - } - if( syncDir ){ - pNew->ctrlFlags |= UNIXFILE_DIRSYNC; - } - -#if OS_VXWORKS - pNew->pId = vxworksFindFileId(zFilename); - if( pNew->pId==0 ){ - noLock = 1; - rc = SQLITE_NOMEM; - } -#endif - - if( noLock ){ - pLockingStyle = &nolockIoMethods; - }else{ - pLockingStyle = (**(finder_type*)pVfs->pAppData)(zFilename, pNew); -#if SQLITE_ENABLE_LOCKING_STYLE - /* Cache zFilename in the locking context (AFP and dotlock override) for - ** proxyLock activation is possible (remote proxy is based on db name) - ** zFilename remains valid until file is closed, to support */ - pNew->lockingContext = (void*)zFilename; -#endif - } - - if( pLockingStyle == &posixIoMethods -#if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE - || pLockingStyle == &nfsIoMethods -#endif - ){ - unixEnterMutex(); - rc = findInodeInfo(pNew, &pNew->pInode); - if( rc!=SQLITE_OK ){ - /* If an error occured in findInodeInfo(), close the file descriptor - ** immediately, before releasing the mutex. findInodeInfo() may fail - ** in two scenarios: - ** - ** (a) A call to fstat() failed. - ** (b) A malloc failed. - ** - ** Scenario (b) may only occur if the process is holding no other - ** file descriptors open on the same file. If there were other file - ** descriptors on this file, then no malloc would be required by - ** findInodeInfo(). If this is the case, it is quite safe to close - ** handle h - as it is guaranteed that no posix locks will be released - ** by doing so. - ** - ** If scenario (a) caused the error then things are not so safe. The - ** implicit assumption here is that if fstat() fails, things are in - ** such bad shape that dropping a lock or two doesn't matter much. - */ - robust_close(pNew, h, __LINE__); - h = -1; - } - unixLeaveMutex(); - } - -#if SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__) - else if( pLockingStyle == &afpIoMethods ){ - /* AFP locking uses the file path so it needs to be included in - ** the afpLockingContext. - */ - afpLockingContext *pCtx; - pNew->lockingContext = pCtx = sqlite3_malloc( sizeof(*pCtx) ); - if( pCtx==0 ){ - rc = SQLITE_NOMEM; - }else{ - /* NB: zFilename exists and remains valid until the file is closed - ** according to requirement F11141. So we do not need to make a - ** copy of the filename. */ - pCtx->dbPath = zFilename; - pCtx->reserved = 0; - srandomdev(); - unixEnterMutex(); - rc = findInodeInfo(pNew, &pNew->pInode); - if( rc!=SQLITE_OK ){ - sqlite3_free(pNew->lockingContext); - robust_close(pNew, h, __LINE__); - h = -1; - } - unixLeaveMutex(); - } - } -#endif - - else if( pLockingStyle == &dotlockIoMethods ){ - /* Dotfile locking uses the file path so it needs to be included in - ** the dotlockLockingContext - */ - char *zLockFile; - int nFilename; - assert( zFilename!=0 ); - nFilename = (int)strlen(zFilename) + 6; - zLockFile = (char *)sqlite3_malloc(nFilename); - if( zLockFile==0 ){ - rc = SQLITE_NOMEM; - }else{ - sqlite3_snprintf(nFilename, zLockFile, "%s" DOTLOCK_SUFFIX, zFilename); - } - pNew->lockingContext = zLockFile; - } - -#if OS_VXWORKS - else if( pLockingStyle == &semIoMethods ){ - /* Named semaphore locking uses the file path so it needs to be - ** included in the semLockingContext - */ - unixEnterMutex(); - rc = findInodeInfo(pNew, &pNew->pInode); - if( (rc==SQLITE_OK) && (pNew->pInode->pSem==NULL) ){ - char *zSemName = pNew->pInode->aSemName; - int n; - sqlite3_snprintf(MAX_PATHNAME, zSemName, "/%s.sem", - pNew->pId->zCanonicalName); - for( n=1; zSemName[n]; n++ ) - if( zSemName[n]=='/' ) zSemName[n] = '_'; - pNew->pInode->pSem = sem_open(zSemName, O_CREAT, 0666, 1); - if( pNew->pInode->pSem == SEM_FAILED ){ - rc = SQLITE_NOMEM; - pNew->pInode->aSemName[0] = '\0'; - } - } - unixLeaveMutex(); - } -#endif - - pNew->lastErrno = 0; -#if OS_VXWORKS - if( rc!=SQLITE_OK ){ - if( h>=0 ) robust_close(pNew, h, __LINE__); - h = -1; - osUnlink(zFilename); - isDelete = 0; - } - pNew->isDelete = isDelete; -#endif - if( rc!=SQLITE_OK ){ - if( h>=0 ) robust_close(pNew, h, __LINE__); - }else{ - pNew->pMethod = pLockingStyle; - OpenCounter(+1); - } - return rc; -} - -/* -** Return the name of a directory in which to put temporary files. -** If no suitable temporary file directory can be found, return NULL. -*/ -static const char *unixTempFileDir(void){ - static const char *azDirs[] = { - 0, - 0, - "/var/tmp", - "/usr/tmp", - "/tmp", - 0 /* List terminator */ - }; - unsigned int i; - struct stat buf; - const char *zDir = 0; - - azDirs[0] = sqlite3_temp_directory; - if( !azDirs[1] ) azDirs[1] = getenv("TMPDIR"); - for(i=0; imxPathname bytes. -*/ -static int unixGetTempname(int nBuf, char *zBuf){ - static const unsigned char zChars[] = - "abcdefghijklmnopqrstuvwxyz" - "ABCDEFGHIJKLMNOPQRSTUVWXYZ" - "0123456789"; - unsigned int i, j; - const char *zDir; - - /* It's odd to simulate an io-error here, but really this is just - ** using the io-error infrastructure to test that SQLite handles this - ** function failing. - */ - SimulateIOError( return SQLITE_IOERR ); - - zDir = unixTempFileDir(); - if( zDir==0 ) zDir = "."; - - /* Check that the output buffer is large enough for the temporary file - ** name. If it is not, return SQLITE_ERROR. - */ - if( (strlen(zDir) + strlen(SQLITE_TEMP_FILE_PREFIX) + 17) >= (size_t)nBuf ){ - return SQLITE_ERROR; - } - - do{ - sqlite3_snprintf(nBuf-17, zBuf, "%s/"SQLITE_TEMP_FILE_PREFIX, zDir); - j = (int)strlen(zBuf); - sqlite3_randomness(15, &zBuf[j]); - for(i=0; i<15; i++, j++){ - zBuf[j] = (char)zChars[ ((unsigned char)zBuf[j])%(sizeof(zChars)-1) ]; - } - zBuf[j] = 0; - }while( osAccess(zBuf,0)==0 ); - return SQLITE_OK; -} - -#if SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__) -/* -** Routine to transform a unixFile into a proxy-locking unixFile. -** Implementation in the proxy-lock division, but used by unixOpen() -** if SQLITE_PREFER_PROXY_LOCKING is defined. -*/ -static int proxyTransformUnixFile(unixFile*, const char*); -#endif - -/* -** Search for an unused file descriptor that was opened on the database -** file (not a journal or master-journal file) identified by pathname -** zPath with SQLITE_OPEN_XXX flags matching those passed as the second -** argument to this function. -** -** Such a file descriptor may exist if a database connection was closed -** but the associated file descriptor could not be closed because some -** other file descriptor open on the same file is holding a file-lock. -** Refer to comments in the unixClose() function and the lengthy comment -** describing "Posix Advisory Locking" at the start of this file for -** further details. Also, ticket #4018. -** -** If a suitable file descriptor is found, then it is returned. If no -** such file descriptor is located, -1 is returned. -*/ -static UnixUnusedFd *findReusableFd(const char *zPath, int flags){ - UnixUnusedFd *pUnused = 0; - - /* Do not search for an unused file descriptor on vxworks. Not because - ** vxworks would not benefit from the change (it might, we're not sure), - ** but because no way to test it is currently available. It is better - ** not to risk breaking vxworks support for the sake of such an obscure - ** feature. */ -#if !OS_VXWORKS - struct stat sStat; /* Results of stat() call */ - - /* A stat() call may fail for various reasons. If this happens, it is - ** almost certain that an open() call on the same path will also fail. - ** For this reason, if an error occurs in the stat() call here, it is - ** ignored and -1 is returned. The caller will try to open a new file - ** descriptor on the same path, fail, and return an error to SQLite. - ** - ** Even if a subsequent open() call does succeed, the consequences of - ** not searching for a resusable file descriptor are not dire. */ - if( 0==osStat(zPath, &sStat) ){ - unixInodeInfo *pInode; - - unixEnterMutex(); - pInode = inodeList; - while( pInode && (pInode->fileId.dev!=sStat.st_dev - || pInode->fileId.ino!=sStat.st_ino) ){ - pInode = pInode->pNext; - } - if( pInode ){ - UnixUnusedFd **pp; - for(pp=&pInode->pUnused; *pp && (*pp)->flags!=flags; pp=&((*pp)->pNext)); - pUnused = *pp; - if( pUnused ){ - *pp = pUnused->pNext; - } - } - unixLeaveMutex(); - } -#endif /* if !OS_VXWORKS */ - return pUnused; -} - -/* -** This function is called by unixOpen() to determine the unix permissions -** to create new files with. If no error occurs, then SQLITE_OK is returned -** and a value suitable for passing as the third argument to open(2) is -** written to *pMode. If an IO error occurs, an SQLite error code is -** returned and the value of *pMode is not modified. -** -** If the file being opened is a temporary file, it is always created with -** the octal permissions 0600 (read/writable by owner only). If the file -** is a database or master journal file, it is created with the permissions -** mask SQLITE_DEFAULT_FILE_PERMISSIONS. -** -** Finally, if the file being opened is a WAL or regular journal file, then -** this function queries the file-system for the permissions on the -** corresponding database file and sets *pMode to this value. Whenever -** possible, WAL and journal files are created using the same permissions -** as the associated database file. -** -** If the SQLITE_ENABLE_8_3_NAMES option is enabled, then the -** original filename is unavailable. But 8_3_NAMES is only used for -** FAT filesystems and permissions do not matter there, so just use -** the default permissions. -*/ -static int findCreateFileMode( - const char *zPath, /* Path of file (possibly) being created */ - int flags, /* Flags passed as 4th argument to xOpen() */ - mode_t *pMode /* OUT: Permissions to open file with */ -){ - int rc = SQLITE_OK; /* Return Code */ - *pMode = SQLITE_DEFAULT_FILE_PERMISSIONS; - if( flags & (SQLITE_OPEN_WAL|SQLITE_OPEN_MAIN_JOURNAL) ){ - char zDb[MAX_PATHNAME+1]; /* Database file path */ - int nDb; /* Number of valid bytes in zDb */ - struct stat sStat; /* Output of stat() on database file */ - - /* zPath is a path to a WAL or journal file. The following block derives - ** the path to the associated database file from zPath. This block handles - ** the following naming conventions: - ** - ** "-journal" - ** "-wal" - ** "-journalNN" - ** "-walNN" - ** - ** where NN is a decimal number. The NN naming schemes are - ** used by the test_multiplex.c module. - */ - nDb = sqlite3Strlen30(zPath) - 1; -#ifdef SQLITE_ENABLE_8_3_NAMES - while( nDb>0 && !sqlite3Isalnum(zPath[nDb]) ) nDb--; - if( nDb==0 || zPath[nDb]!='-' ) return SQLITE_OK; -#else - while( zPath[nDb]!='-' ){ - assert( nDb>0 ); - assert( zPath[nDb]!='\n' ); - nDb--; - } -#endif - memcpy(zDb, zPath, nDb); - zDb[nDb] = '\0'; - - if( 0==osStat(zDb, &sStat) ){ - *pMode = sStat.st_mode & 0777; - }else{ - rc = SQLITE_IOERR_FSTAT; - } - }else if( flags & SQLITE_OPEN_DELETEONCLOSE ){ - *pMode = 0600; - } - return rc; -} - -/* -** Open the file zPath. -** -** Previously, the SQLite OS layer used three functions in place of this -** one: -** -** sqlite3OsOpenReadWrite(); -** sqlite3OsOpenReadOnly(); -** sqlite3OsOpenExclusive(); -** -** These calls correspond to the following combinations of flags: -** -** ReadWrite() -> (READWRITE | CREATE) -** ReadOnly() -> (READONLY) -** OpenExclusive() -> (READWRITE | CREATE | EXCLUSIVE) -** -** The old OpenExclusive() accepted a boolean argument - "delFlag". If -** true, the file was configured to be automatically deleted when the -** file handle closed. To achieve the same effect using this new -** interface, add the DELETEONCLOSE flag to those specified above for -** OpenExclusive(). -*/ -static int unixOpen( - sqlite3_vfs *pVfs, /* The VFS for which this is the xOpen method */ - const char *zPath, /* Pathname of file to be opened */ - sqlite3_file *pFile, /* The file descriptor to be filled in */ - int flags, /* Input flags to control the opening */ - int *pOutFlags /* Output flags returned to SQLite core */ -){ - unixFile *p = (unixFile *)pFile; - int fd = -1; /* File descriptor returned by open() */ - int openFlags = 0; /* Flags to pass to open() */ - int eType = flags&0xFFFFFF00; /* Type of file to open */ - int noLock; /* True to omit locking primitives */ - int rc = SQLITE_OK; /* Function Return Code */ - - int isExclusive = (flags & SQLITE_OPEN_EXCLUSIVE); - int isDelete = (flags & SQLITE_OPEN_DELETEONCLOSE); - int isCreate = (flags & SQLITE_OPEN_CREATE); - int isReadonly = (flags & SQLITE_OPEN_READONLY); - int isReadWrite = (flags & SQLITE_OPEN_READWRITE); -#if SQLITE_ENABLE_LOCKING_STYLE - int isAutoProxy = (flags & SQLITE_OPEN_AUTOPROXY); -#endif -#if defined(__APPLE__) || SQLITE_ENABLE_LOCKING_STYLE - struct statfs fsInfo; -#endif - - /* If creating a master or main-file journal, this function will open - ** a file-descriptor on the directory too. The first time unixSync() - ** is called the directory file descriptor will be fsync()ed and close()d. - */ - int syncDir = (isCreate && ( - eType==SQLITE_OPEN_MASTER_JOURNAL - || eType==SQLITE_OPEN_MAIN_JOURNAL - || eType==SQLITE_OPEN_WAL - )); - - /* If argument zPath is a NULL pointer, this function is required to open - ** a temporary file. Use this buffer to store the file name in. - */ - char zTmpname[MAX_PATHNAME+1]; - const char *zName = zPath; - - /* Check the following statements are true: - ** - ** (a) Exactly one of the READWRITE and READONLY flags must be set, and - ** (b) if CREATE is set, then READWRITE must also be set, and - ** (c) if EXCLUSIVE is set, then CREATE must also be set. - ** (d) if DELETEONCLOSE is set, then CREATE must also be set. - */ - assert((isReadonly==0 || isReadWrite==0) && (isReadWrite || isReadonly)); - assert(isCreate==0 || isReadWrite); - assert(isExclusive==0 || isCreate); - assert(isDelete==0 || isCreate); - - /* The main DB, main journal, WAL file and master journal are never - ** automatically deleted. Nor are they ever temporary files. */ - assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_DB ); - assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_JOURNAL ); - assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MASTER_JOURNAL ); - assert( (!isDelete && zName) || eType!=SQLITE_OPEN_WAL ); - - /* Assert that the upper layer has set one of the "file-type" flags. */ - assert( eType==SQLITE_OPEN_MAIN_DB || eType==SQLITE_OPEN_TEMP_DB - || eType==SQLITE_OPEN_MAIN_JOURNAL || eType==SQLITE_OPEN_TEMP_JOURNAL - || eType==SQLITE_OPEN_SUBJOURNAL || eType==SQLITE_OPEN_MASTER_JOURNAL - || eType==SQLITE_OPEN_TRANSIENT_DB || eType==SQLITE_OPEN_WAL - ); - - memset(p, 0, sizeof(unixFile)); - - if( eType==SQLITE_OPEN_MAIN_DB ){ - UnixUnusedFd *pUnused; - pUnused = findReusableFd(zName, flags); - if( pUnused ){ - fd = pUnused->fd; - }else{ - pUnused = sqlite3_malloc(sizeof(*pUnused)); - if( !pUnused ){ - return SQLITE_NOMEM; - } - } - p->pUnused = pUnused; - }else if( !zName ){ - /* If zName is NULL, the upper layer is requesting a temp file. */ - assert(isDelete && !syncDir); - rc = unixGetTempname(MAX_PATHNAME+1, zTmpname); - if( rc!=SQLITE_OK ){ - return rc; - } - zName = zTmpname; - } - - /* Determine the value of the flags parameter passed to POSIX function - ** open(). These must be calculated even if open() is not called, as - ** they may be stored as part of the file handle and used by the - ** 'conch file' locking functions later on. */ - if( isReadonly ) openFlags |= O_RDONLY; - if( isReadWrite ) openFlags |= O_RDWR; - if( isCreate ) openFlags |= O_CREAT; - if( isExclusive ) openFlags |= (O_EXCL|O_NOFOLLOW); - openFlags |= (O_LARGEFILE|O_BINARY); - - if( fd<0 ){ - mode_t openMode; /* Permissions to create file with */ - rc = findCreateFileMode(zName, flags, &openMode); - if( rc!=SQLITE_OK ){ - assert( !p->pUnused ); - assert( eType==SQLITE_OPEN_WAL || eType==SQLITE_OPEN_MAIN_JOURNAL ); - return rc; - } - fd = robust_open(zName, openFlags, openMode); - OSTRACE(("OPENX %-3d %s 0%o\n", fd, zName, openFlags)); - if( fd<0 && errno!=EISDIR && isReadWrite && !isExclusive ){ - /* Failed to open the file for read/write access. Try read-only. */ - flags &= ~(SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE); - openFlags &= ~(O_RDWR|O_CREAT); - flags |= SQLITE_OPEN_READONLY; - openFlags |= O_RDONLY; - isReadonly = 1; - fd = robust_open(zName, openFlags, openMode); - } - if( fd<0 ){ - rc = unixLogError(SQLITE_CANTOPEN_BKPT, "open", zName); - goto open_finished; - } - } - assert( fd>=0 ); - if( pOutFlags ){ - *pOutFlags = flags; - } - - if( p->pUnused ){ - p->pUnused->fd = fd; - p->pUnused->flags = flags; - } - - if( isDelete ){ -#if OS_VXWORKS - zPath = zName; -#else - osUnlink(zName); -#endif - } -#if SQLITE_ENABLE_LOCKING_STYLE - else{ - p->openFlags = openFlags; - } -#endif - -#ifdef FD_CLOEXEC - osFcntl(fd, F_SETFD, osFcntl(fd, F_GETFD, 0) | FD_CLOEXEC); -#endif - - noLock = eType!=SQLITE_OPEN_MAIN_DB; - - -#if defined(__APPLE__) || SQLITE_ENABLE_LOCKING_STYLE - if( fstatfs(fd, &fsInfo) == -1 ){ - ((unixFile*)pFile)->lastErrno = errno; - robust_close(p, fd, __LINE__); - return SQLITE_IOERR_ACCESS; - } - if (0 == strncmp("msdos", fsInfo.f_fstypename, 5)) { - ((unixFile*)pFile)->fsFlags |= SQLITE_FSFLAGS_IS_MSDOS; - } -#endif - -#if SQLITE_ENABLE_LOCKING_STYLE -#if SQLITE_PREFER_PROXY_LOCKING - isAutoProxy = 1; -#endif - if( isAutoProxy && (zPath!=NULL) && (!noLock) && pVfs->xOpen ){ - char *envforce = getenv("SQLITE_FORCE_PROXY_LOCKING"); - int useProxy = 0; - - /* SQLITE_FORCE_PROXY_LOCKING==1 means force always use proxy, 0 means - ** never use proxy, NULL means use proxy for non-local files only. */ - if( envforce!=NULL ){ - useProxy = atoi(envforce)>0; - }else{ - if( statfs(zPath, &fsInfo) == -1 ){ - /* In theory, the close(fd) call is sub-optimal. If the file opened - ** with fd is a database file, and there are other connections open - ** on that file that are currently holding advisory locks on it, - ** then the call to close() will cancel those locks. In practice, - ** we're assuming that statfs() doesn't fail very often. At least - ** not while other file descriptors opened by the same process on - ** the same file are working. */ - p->lastErrno = errno; - robust_close(p, fd, __LINE__); - rc = SQLITE_IOERR_ACCESS; - goto open_finished; - } - useProxy = !(fsInfo.f_flags&MNT_LOCAL); - } - if( useProxy ){ - rc = fillInUnixFile(pVfs, fd, syncDir, pFile, zPath, noLock, - isDelete, isReadonly); - if( rc==SQLITE_OK ){ - rc = proxyTransformUnixFile((unixFile*)pFile, ":auto:"); - if( rc!=SQLITE_OK ){ - /* Use unixClose to clean up the resources added in fillInUnixFile - ** and clear all the structure's references. Specifically, - ** pFile->pMethods will be NULL so sqlite3OsClose will be a no-op - */ - unixClose(pFile); - return rc; - } - } - goto open_finished; - } - } -#endif - - rc = fillInUnixFile(pVfs, fd, syncDir, pFile, zPath, noLock, - isDelete, isReadonly); -open_finished: - if( rc!=SQLITE_OK ){ - sqlite3_free(p->pUnused); - } - return rc; -} - - -/* -** Delete the file at zPath. If the dirSync argument is true, fsync() -** the directory after deleting the file. -*/ -static int unixDelete( - sqlite3_vfs *NotUsed, /* VFS containing this as the xDelete method */ - const char *zPath, /* Name of file to be deleted */ - int dirSync /* If true, fsync() directory after deleting file */ -){ - int rc = SQLITE_OK; - UNUSED_PARAMETER(NotUsed); - SimulateIOError(return SQLITE_IOERR_DELETE); - if( osUnlink(zPath)==(-1) && errno!=ENOENT ){ - return unixLogError(SQLITE_IOERR_DELETE, "unlink", zPath); - } -#ifndef SQLITE_DISABLE_DIRSYNC - if( dirSync ){ - int fd; - rc = osOpenDirectory(zPath, &fd); - if( rc==SQLITE_OK ){ -#if OS_VXWORKS - if( fsync(fd)==-1 ) -#else - if( fsync(fd) ) -#endif - { - rc = unixLogError(SQLITE_IOERR_DIR_FSYNC, "fsync", zPath); - } - robust_close(0, fd, __LINE__); - }else if( rc==SQLITE_CANTOPEN ){ - rc = SQLITE_OK; - } - } -#endif - return rc; -} - -/* -** Test the existance of or access permissions of file zPath. The -** test performed depends on the value of flags: -** -** SQLITE_ACCESS_EXISTS: Return 1 if the file exists -** SQLITE_ACCESS_READWRITE: Return 1 if the file is read and writable. -** SQLITE_ACCESS_READONLY: Return 1 if the file is readable. -** -** Otherwise return 0. -*/ -static int unixAccess( - sqlite3_vfs *NotUsed, /* The VFS containing this xAccess method */ - const char *zPath, /* Path of the file to examine */ - int flags, /* What do we want to learn about the zPath file? */ - int *pResOut /* Write result boolean here */ -){ - int amode = 0; - UNUSED_PARAMETER(NotUsed); - SimulateIOError( return SQLITE_IOERR_ACCESS; ); - switch( flags ){ - case SQLITE_ACCESS_EXISTS: - amode = F_OK; - break; - case SQLITE_ACCESS_READWRITE: - amode = W_OK|R_OK; - break; - case SQLITE_ACCESS_READ: - amode = R_OK; - break; - - default: - assert(!"Invalid flags argument"); - } - *pResOut = (osAccess(zPath, amode)==0); - if( flags==SQLITE_ACCESS_EXISTS && *pResOut ){ - struct stat buf; - if( 0==osStat(zPath, &buf) && buf.st_size==0 ){ - *pResOut = 0; - } - } - return SQLITE_OK; -} - - -/* -** Turn a relative pathname into a full pathname. The relative path -** is stored as a nul-terminated string in the buffer pointed to by -** zPath. -** -** zOut points to a buffer of at least sqlite3_vfs.mxPathname bytes -** (in this case, MAX_PATHNAME bytes). The full-path is written to -** this buffer before returning. -*/ -static int unixFullPathname( - sqlite3_vfs *pVfs, /* Pointer to vfs object */ - const char *zPath, /* Possibly relative input path */ - int nOut, /* Size of output buffer in bytes */ - char *zOut /* Output buffer */ -){ - - /* It's odd to simulate an io-error here, but really this is just - ** using the io-error infrastructure to test that SQLite handles this - ** function failing. This function could fail if, for example, the - ** current working directory has been unlinked. - */ - SimulateIOError( return SQLITE_ERROR ); - - assert( pVfs->mxPathname==MAX_PATHNAME ); - UNUSED_PARAMETER(pVfs); - - zOut[nOut-1] = '\0'; - if( zPath[0]=='/' ){ - sqlite3_snprintf(nOut, zOut, "%s", zPath); - }else{ - int nCwd; - if( osGetcwd(zOut, nOut-1)==0 ){ - return unixLogError(SQLITE_CANTOPEN_BKPT, "getcwd", zPath); - } - nCwd = (int)strlen(zOut); - sqlite3_snprintf(nOut-nCwd, &zOut[nCwd], "/%s", zPath); - } - return SQLITE_OK; -} - - -#ifndef SQLITE_OMIT_LOAD_EXTENSION -/* -** Interfaces for opening a shared library, finding entry points -** within the shared library, and closing the shared library. -*/ -#include -static void *unixDlOpen(sqlite3_vfs *NotUsed, const char *zFilename){ - UNUSED_PARAMETER(NotUsed); - return dlopen(zFilename, RTLD_NOW | RTLD_GLOBAL); -} - -/* -** SQLite calls this function immediately after a call to unixDlSym() or -** unixDlOpen() fails (returns a null pointer). If a more detailed error -** message is available, it is written to zBufOut. If no error message -** is available, zBufOut is left unmodified and SQLite uses a default -** error message. -*/ -static void unixDlError(sqlite3_vfs *NotUsed, int nBuf, char *zBufOut){ - const char *zErr; - UNUSED_PARAMETER(NotUsed); - unixEnterMutex(); - zErr = dlerror(); - if( zErr ){ - sqlite3_snprintf(nBuf, zBufOut, "%s", zErr); - } - unixLeaveMutex(); -} -static void (*unixDlSym(sqlite3_vfs *NotUsed, void *p, const char*zSym))(void){ - /* - ** GCC with -pedantic-errors says that C90 does not allow a void* to be - ** cast into a pointer to a function. And yet the library dlsym() routine - ** returns a void* which is really a pointer to a function. So how do we - ** use dlsym() with -pedantic-errors? - ** - ** Variable x below is defined to be a pointer to a function taking - ** parameters void* and const char* and returning a pointer to a function. - ** We initialize x by assigning it a pointer to the dlsym() function. - ** (That assignment requires a cast.) Then we call the function that - ** x points to. - ** - ** This work-around is unlikely to work correctly on any system where - ** you really cannot cast a function pointer into void*. But then, on the - ** other hand, dlsym() will not work on such a system either, so we have - ** not really lost anything. - */ - void (*(*x)(void*,const char*))(void); - UNUSED_PARAMETER(NotUsed); - x = (void(*(*)(void*,const char*))(void))dlsym; - return (*x)(p, zSym); -} -static void unixDlClose(sqlite3_vfs *NotUsed, void *pHandle){ - UNUSED_PARAMETER(NotUsed); - dlclose(pHandle); -} -#else /* if SQLITE_OMIT_LOAD_EXTENSION is defined: */ - #define unixDlOpen 0 - #define unixDlError 0 - #define unixDlSym 0 - #define unixDlClose 0 -#endif - -/* -** Write nBuf bytes of random data to the supplied buffer zBuf. -*/ -static int unixRandomness(sqlite3_vfs *NotUsed, int nBuf, char *zBuf){ - UNUSED_PARAMETER(NotUsed); - assert((size_t)nBuf>=(sizeof(time_t)+sizeof(int))); - - /* We have to initialize zBuf to prevent valgrind from reporting - ** errors. The reports issued by valgrind are incorrect - we would - ** prefer that the randomness be increased by making use of the - ** uninitialized space in zBuf - but valgrind errors tend to worry - ** some users. Rather than argue, it seems easier just to initialize - ** the whole array and silence valgrind, even if that means less randomness - ** in the random seed. - ** - ** When testing, initializing zBuf[] to zero is all we do. That means - ** that we always use the same random number sequence. This makes the - ** tests repeatable. - */ - memset(zBuf, 0, nBuf); -#if !defined(SQLITE_TEST) - { - int pid, fd; - fd = robust_open("/dev/urandom", O_RDONLY, 0); - if( fd<0 ){ - time_t t; - time(&t); - memcpy(zBuf, &t, sizeof(t)); - pid = getpid(); - memcpy(&zBuf[sizeof(t)], &pid, sizeof(pid)); - assert( sizeof(t)+sizeof(pid)<=(size_t)nBuf ); - nBuf = sizeof(t) + sizeof(pid); - }else{ - do{ nBuf = osRead(fd, zBuf, nBuf); }while( nBuf<0 && errno==EINTR ); - robust_close(0, fd, __LINE__); - } - } -#endif - return nBuf; -} - - -/* -** Sleep for a little while. Return the amount of time slept. -** The argument is the number of microseconds we want to sleep. -** The return value is the number of microseconds of sleep actually -** requested from the underlying operating system, a number which -** might be greater than or equal to the argument, but not less -** than the argument. -*/ -static int unixSleep(sqlite3_vfs *NotUsed, int microseconds){ -#if OS_VXWORKS - struct timespec sp; - - sp.tv_sec = microseconds / 1000000; - sp.tv_nsec = (microseconds % 1000000) * 1000; - nanosleep(&sp, NULL); - UNUSED_PARAMETER(NotUsed); - return microseconds; -#elif defined(HAVE_USLEEP) && HAVE_USLEEP - usleep(microseconds); - UNUSED_PARAMETER(NotUsed); - return microseconds; -#else - int seconds = (microseconds+999999)/1000000; - sleep(seconds); - UNUSED_PARAMETER(NotUsed); - return seconds*1000000; -#endif -} - -/* -** The following variable, if set to a non-zero value, is interpreted as -** the number of seconds since 1970 and is used to set the result of -** sqlite3OsCurrentTime() during testing. -*/ -#ifdef SQLITE_TEST -int sqlite3_current_time = 0; /* Fake system time in seconds since 1970. */ -#endif - -/* -** Find the current time (in Universal Coordinated Time). Write into *piNow -** the current time and date as a Julian Day number times 86_400_000. In -** other words, write into *piNow the number of milliseconds since the Julian -** epoch of noon in Greenwich on November 24, 4714 B.C according to the -** proleptic Gregorian calendar. -** -** On success, return SQLITE_OK. Return SQLITE_ERROR if the time and date -** cannot be found. -*/ -static int unixCurrentTimeInt64(sqlite3_vfs *NotUsed, sqlite3_int64 *piNow){ - static const sqlite3_int64 unixEpoch = 24405875*(sqlite3_int64)8640000; - int rc = SQLITE_OK; -#if defined(NO_GETTOD) - time_t t; - time(&t); - *piNow = ((sqlite3_int64)t)*1000 + unixEpoch; -#elif OS_VXWORKS - struct timespec sNow; - clock_gettime(CLOCK_REALTIME, &sNow); - *piNow = unixEpoch + 1000*(sqlite3_int64)sNow.tv_sec + sNow.tv_nsec/1000000; -#else - struct timeval sNow; - if( gettimeofday(&sNow, 0)==0 ){ - *piNow = unixEpoch + 1000*(sqlite3_int64)sNow.tv_sec + sNow.tv_usec/1000; - }else{ - rc = SQLITE_ERROR; - } -#endif - -#ifdef SQLITE_TEST - if( sqlite3_current_time ){ - *piNow = 1000*(sqlite3_int64)sqlite3_current_time + unixEpoch; - } -#endif - UNUSED_PARAMETER(NotUsed); - return rc; -} - -/* -** Find the current time (in Universal Coordinated Time). Write the -** current time and date as a Julian Day number into *prNow and -** return 0. Return 1 if the time and date cannot be found. -*/ -static int unixCurrentTime(sqlite3_vfs *NotUsed, double *prNow){ - sqlite3_int64 i = 0; - int rc; - UNUSED_PARAMETER(NotUsed); - rc = unixCurrentTimeInt64(0, &i); - *prNow = i/86400000.0; - return rc; -} - -/* -** We added the xGetLastError() method with the intention of providing -** better low-level error messages when operating-system problems come up -** during SQLite operation. But so far, none of that has been implemented -** in the core. So this routine is never called. For now, it is merely -** a place-holder. -*/ -static int unixGetLastError(sqlite3_vfs *NotUsed, int NotUsed2, char *NotUsed3){ - UNUSED_PARAMETER(NotUsed); - UNUSED_PARAMETER(NotUsed2); - UNUSED_PARAMETER(NotUsed3); - return 0; -} - - -/* -************************ End of sqlite3_vfs methods *************************** -******************************************************************************/ - -/****************************************************************************** -************************** Begin Proxy Locking ******************************** -** -** Proxy locking is a "uber-locking-method" in this sense: It uses the -** other locking methods on secondary lock files. Proxy locking is a -** meta-layer over top of the primitive locking implemented above. For -** this reason, the division that implements of proxy locking is deferred -** until late in the file (here) after all of the other I/O methods have -** been defined - so that the primitive locking methods are available -** as services to help with the implementation of proxy locking. -** -**** -** -** The default locking schemes in SQLite use byte-range locks on the -** database file to coordinate safe, concurrent access by multiple readers -** and writers [http://sqlite.org/lockingv3.html]. The five file locking -** states (UNLOCKED, PENDING, SHARED, RESERVED, EXCLUSIVE) are implemented -** as POSIX read & write locks over fixed set of locations (via fsctl), -** on AFP and SMB only exclusive byte-range locks are available via fsctl -** with _IOWR('z', 23, struct ByteRangeLockPB2) to track the same 5 states. -** To simulate a F_RDLCK on the shared range, on AFP a randomly selected -** address in the shared range is taken for a SHARED lock, the entire -** shared range is taken for an EXCLUSIVE lock): -** -** PENDING_BYTE 0x40000000 -** RESERVED_BYTE 0x40000001 -** SHARED_RANGE 0x40000002 -> 0x40000200 -** -** This works well on the local file system, but shows a nearly 100x -** slowdown in read performance on AFP because the AFP client disables -** the read cache when byte-range locks are present. Enabling the read -** cache exposes a cache coherency problem that is present on all OS X -** supported network file systems. NFS and AFP both observe the -** close-to-open semantics for ensuring cache coherency -** [http://nfs.sourceforge.net/#faq_a8], which does not effectively -** address the requirements for concurrent database access by multiple -** readers and writers -** [http://www.nabble.com/SQLite-on-NFS-cache-coherency-td15655701.html]. -** -** To address the performance and cache coherency issues, proxy file locking -** changes the way database access is controlled by limiting access to a -** single host at a time and moving file locks off of the database file -** and onto a proxy file on the local file system. -** -** -** Using proxy locks -** ----------------- -** -** C APIs -** -** sqlite3_file_control(db, dbname, SQLITE_SET_LOCKPROXYFILE, -** | ":auto:"); -** sqlite3_file_control(db, dbname, SQLITE_GET_LOCKPROXYFILE, &); -** -** -** SQL pragmas -** -** PRAGMA [database.]lock_proxy_file= | :auto: -** PRAGMA [database.]lock_proxy_file -** -** Specifying ":auto:" means that if there is a conch file with a matching -** host ID in it, the proxy path in the conch file will be used, otherwise -** a proxy path based on the user's temp dir -** (via confstr(_CS_DARWIN_USER_TEMP_DIR,...)) will be used and the -** actual proxy file name is generated from the name and path of the -** database file. For example: -** -** For database path "/Users/me/foo.db" -** The lock path will be "/sqliteplocks/_Users_me_foo.db:auto:") -** -** Once a lock proxy is configured for a database connection, it can not -** be removed, however it may be switched to a different proxy path via -** the above APIs (assuming the conch file is not being held by another -** connection or process). -** -** -** How proxy locking works -** ----------------------- -** -** Proxy file locking relies primarily on two new supporting files: -** -** * conch file to limit access to the database file to a single host -** at a time -** -** * proxy file to act as a proxy for the advisory locks normally -** taken on the database -** -** The conch file - to use a proxy file, sqlite must first "hold the conch" -** by taking an sqlite-style shared lock on the conch file, reading the -** contents and comparing the host's unique host ID (see below) and lock -** proxy path against the values stored in the conch. The conch file is -** stored in the same directory as the database file and the file name -** is patterned after the database file name as ".-conch". -** If the conch file does not exist, or it's contents do not match the -** host ID and/or proxy path, then the lock is escalated to an exclusive -** lock and the conch file contents is updated with the host ID and proxy -** path and the lock is downgraded to a shared lock again. If the conch -** is held by another process (with a shared lock), the exclusive lock -** will fail and SQLITE_BUSY is returned. -** -** The proxy file - a single-byte file used for all advisory file locks -** normally taken on the database file. This allows for safe sharing -** of the database file for multiple readers and writers on the same -** host (the conch ensures that they all use the same local lock file). -** -** Requesting the lock proxy does not immediately take the conch, it is -** only taken when the first request to lock database file is made. -** This matches the semantics of the traditional locking behavior, where -** opening a connection to a database file does not take a lock on it. -** The shared lock and an open file descriptor are maintained until -** the connection to the database is closed. -** -** The proxy file and the lock file are never deleted so they only need -** to be created the first time they are used. -** -** Configuration options -** --------------------- -** -** SQLITE_PREFER_PROXY_LOCKING -** -** Database files accessed on non-local file systems are -** automatically configured for proxy locking, lock files are -** named automatically using the same logic as -** PRAGMA lock_proxy_file=":auto:" -** -** SQLITE_PROXY_DEBUG -** -** Enables the logging of error messages during host id file -** retrieval and creation -** -** LOCKPROXYDIR -** -** Overrides the default directory used for lock proxy files that -** are named automatically via the ":auto:" setting -** -** SQLITE_DEFAULT_PROXYDIR_PERMISSIONS -** -** Permissions to use when creating a directory for storing the -** lock proxy files, only used when LOCKPROXYDIR is not set. -** -** -** As mentioned above, when compiled with SQLITE_PREFER_PROXY_LOCKING, -** setting the environment variable SQLITE_FORCE_PROXY_LOCKING to 1 will -** force proxy locking to be used for every database file opened, and 0 -** will force automatic proxy locking to be disabled for all database -** files (explicity calling the SQLITE_SET_LOCKPROXYFILE pragma or -** sqlite_file_control API is not affected by SQLITE_FORCE_PROXY_LOCKING). -*/ - -/* -** Proxy locking is only available on MacOSX -*/ -#if defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE - -/* -** The proxyLockingContext has the path and file structures for the remote -** and local proxy files in it -*/ -typedef struct proxyLockingContext proxyLockingContext; -struct proxyLockingContext { - unixFile *conchFile; /* Open conch file */ - char *conchFilePath; /* Name of the conch file */ - unixFile *lockProxy; /* Open proxy lock file */ - char *lockProxyPath; /* Name of the proxy lock file */ - char *dbPath; /* Name of the open file */ - int conchHeld; /* 1 if the conch is held, -1 if lockless */ - void *oldLockingContext; /* Original lockingcontext to restore on close */ - sqlite3_io_methods const *pOldMethod; /* Original I/O methods for close */ -}; - -/* -** The proxy lock file path for the database at dbPath is written into lPath, -** which must point to valid, writable memory large enough for a maxLen length -** file path. -*/ -static int proxyGetLockPath(const char *dbPath, char *lPath, size_t maxLen){ - int len; - int dbLen; - int i; - -#ifdef LOCKPROXYDIR - len = strlcpy(lPath, LOCKPROXYDIR, maxLen); -#else -# ifdef _CS_DARWIN_USER_TEMP_DIR - { - if( !confstr(_CS_DARWIN_USER_TEMP_DIR, lPath, maxLen) ){ - OSTRACE(("GETLOCKPATH failed %s errno=%d pid=%d\n", - lPath, errno, getpid())); - return SQLITE_IOERR_LOCK; - } - len = strlcat(lPath, "sqliteplocks", maxLen); - } -# else - len = strlcpy(lPath, "/tmp/", maxLen); -# endif -#endif - - if( lPath[len-1]!='/' ){ - len = strlcat(lPath, "/", maxLen); - } - - /* transform the db path to a unique cache name */ - dbLen = (int)strlen(dbPath); - for( i=0; i 0) ){ - /* only mkdir if leaf dir != "." or "/" or ".." */ - if( i-start>2 || (i-start==1 && buf[start] != '.' && buf[start] != '/') - || (i-start==2 && buf[start] != '.' && buf[start+1] != '.') ){ - buf[i]='\0'; - if( mkdir(buf, SQLITE_DEFAULT_PROXYDIR_PERMISSIONS) ){ - int err=errno; - if( err!=EEXIST ) { - OSTRACE(("CREATELOCKPATH FAILED creating %s, " - "'%s' proxy lock path=%s pid=%d\n", - buf, strerror(err), lockPath, getpid())); - return err; - } - } - } - start=i+1; - } - buf[i] = lockPath[i]; - } - OSTRACE(("CREATELOCKPATH proxy lock path=%s pid=%d\n", lockPath, getpid())); - return 0; -} - -/* -** Create a new VFS file descriptor (stored in memory obtained from -** sqlite3_malloc) and open the file named "path" in the file descriptor. -** -** The caller is responsible not only for closing the file descriptor -** but also for freeing the memory associated with the file descriptor. -*/ -static int proxyCreateUnixFile( - const char *path, /* path for the new unixFile */ - unixFile **ppFile, /* unixFile created and returned by ref */ - int islockfile /* if non zero missing dirs will be created */ -) { - int fd = -1; - unixFile *pNew; - int rc = SQLITE_OK; - int openFlags = O_RDWR | O_CREAT; - sqlite3_vfs dummyVfs; - int terrno = 0; - UnixUnusedFd *pUnused = NULL; - - /* 1. first try to open/create the file - ** 2. if that fails, and this is a lock file (not-conch), try creating - ** the parent directories and then try again. - ** 3. if that fails, try to open the file read-only - ** otherwise return BUSY (if lock file) or CANTOPEN for the conch file - */ - pUnused = findReusableFd(path, openFlags); - if( pUnused ){ - fd = pUnused->fd; - }else{ - pUnused = sqlite3_malloc(sizeof(*pUnused)); - if( !pUnused ){ - return SQLITE_NOMEM; - } - } - if( fd<0 ){ - fd = robust_open(path, openFlags, SQLITE_DEFAULT_FILE_PERMISSIONS); - terrno = errno; - if( fd<0 && errno==ENOENT && islockfile ){ - if( proxyCreateLockPath(path) == SQLITE_OK ){ - fd = robust_open(path, openFlags, SQLITE_DEFAULT_FILE_PERMISSIONS); - } - } - } - if( fd<0 ){ - openFlags = O_RDONLY; - fd = robust_open(path, openFlags, SQLITE_DEFAULT_FILE_PERMISSIONS); - terrno = errno; - } - if( fd<0 ){ - if( islockfile ){ - return SQLITE_BUSY; - } - switch (terrno) { - case EACCES: - return SQLITE_PERM; - case EIO: - return SQLITE_IOERR_LOCK; /* even though it is the conch */ - default: - return SQLITE_CANTOPEN_BKPT; - } - } - - pNew = (unixFile *)sqlite3_malloc(sizeof(*pNew)); - if( pNew==NULL ){ - rc = SQLITE_NOMEM; - goto end_create_proxy; - } - memset(pNew, 0, sizeof(unixFile)); - pNew->openFlags = openFlags; - memset(&dummyVfs, 0, sizeof(dummyVfs)); - dummyVfs.pAppData = (void*)&autolockIoFinder; - dummyVfs.zName = "dummy"; - pUnused->fd = fd; - pUnused->flags = openFlags; - pNew->pUnused = pUnused; - - rc = fillInUnixFile(&dummyVfs, fd, 0, (sqlite3_file*)pNew, path, 0, 0, 0); - if( rc==SQLITE_OK ){ - *ppFile = pNew; - return SQLITE_OK; - } -end_create_proxy: - robust_close(pNew, fd, __LINE__); - sqlite3_free(pNew); - sqlite3_free(pUnused); - return rc; -} - -#ifdef SQLITE_TEST -/* simulate multiple hosts by creating unique hostid file paths */ -int sqlite3_hostid_num = 0; -#endif - -#define PROXY_HOSTIDLEN 16 /* conch file host id length */ - -/* Not always defined in the headers as it ought to be */ -extern int gethostuuid(uuid_t id, const struct timespec *wait); - -/* get the host ID via gethostuuid(), pHostID must point to PROXY_HOSTIDLEN -** bytes of writable memory. -*/ -static int proxyGetHostID(unsigned char *pHostID, int *pError){ - assert(PROXY_HOSTIDLEN == sizeof(uuid_t)); - memset(pHostID, 0, PROXY_HOSTIDLEN); -#if defined(__MAX_OS_X_VERSION_MIN_REQUIRED)\ - && __MAC_OS_X_VERSION_MIN_REQUIRED<1050 - { - static const struct timespec timeout = {1, 0}; /* 1 sec timeout */ - if( gethostuuid(pHostID, &timeout) ){ - int err = errno; - if( pError ){ - *pError = err; - } - return SQLITE_IOERR; - } - } -#else - UNUSED_PARAMETER(pError); -#endif -#ifdef SQLITE_TEST - /* simulate multiple hosts by creating unique hostid file paths */ - if( sqlite3_hostid_num != 0){ - pHostID[0] = (char)(pHostID[0] + (char)(sqlite3_hostid_num & 0xFF)); - } -#endif - - return SQLITE_OK; -} - -/* The conch file contains the header, host id and lock file path - */ -#define PROXY_CONCHVERSION 2 /* 1-byte header, 16-byte host id, path */ -#define PROXY_HEADERLEN 1 /* conch file header length */ -#define PROXY_PATHINDEX (PROXY_HEADERLEN+PROXY_HOSTIDLEN) -#define PROXY_MAXCONCHLEN (PROXY_HEADERLEN+PROXY_HOSTIDLEN+MAXPATHLEN) - -/* -** Takes an open conch file, copies the contents to a new path and then moves -** it back. The newly created file's file descriptor is assigned to the -** conch file structure and finally the original conch file descriptor is -** closed. Returns zero if successful. -*/ -static int proxyBreakConchLock(unixFile *pFile, uuid_t myHostID){ - proxyLockingContext *pCtx = (proxyLockingContext *)pFile->lockingContext; - unixFile *conchFile = pCtx->conchFile; - char tPath[MAXPATHLEN]; - char buf[PROXY_MAXCONCHLEN]; - char *cPath = pCtx->conchFilePath; - size_t readLen = 0; - size_t pathLen = 0; - char errmsg[64] = ""; - int fd = -1; - int rc = -1; - UNUSED_PARAMETER(myHostID); - - /* create a new path by replace the trailing '-conch' with '-break' */ - pathLen = strlcpy(tPath, cPath, MAXPATHLEN); - if( pathLen>MAXPATHLEN || pathLen<6 || - (strlcpy(&tPath[pathLen-5], "break", 6) != 5) ){ - sqlite3_snprintf(sizeof(errmsg),errmsg,"path error (len %d)",(int)pathLen); - goto end_breaklock; - } - /* read the conch content */ - readLen = osPread(conchFile->h, buf, PROXY_MAXCONCHLEN, 0); - if( readLenh, __LINE__); - conchFile->h = fd; - conchFile->openFlags = O_RDWR | O_CREAT; - -end_breaklock: - if( rc ){ - if( fd>=0 ){ - osUnlink(tPath); - robust_close(pFile, fd, __LINE__); - } - fprintf(stderr, "failed to break stale lock on %s, %s\n", cPath, errmsg); - } - return rc; -} - -/* Take the requested lock on the conch file and break a stale lock if the -** host id matches. -*/ -static int proxyConchLock(unixFile *pFile, uuid_t myHostID, int lockType){ - proxyLockingContext *pCtx = (proxyLockingContext *)pFile->lockingContext; - unixFile *conchFile = pCtx->conchFile; - int rc = SQLITE_OK; - int nTries = 0; - struct timespec conchModTime; - - memset(&conchModTime, 0, sizeof(conchModTime)); - do { - rc = conchFile->pMethod->xLock((sqlite3_file*)conchFile, lockType); - nTries ++; - if( rc==SQLITE_BUSY ){ - /* If the lock failed (busy): - * 1st try: get the mod time of the conch, wait 0.5s and try again. - * 2nd try: fail if the mod time changed or host id is different, wait - * 10 sec and try again - * 3rd try: break the lock unless the mod time has changed. - */ - struct stat buf; - if( osFstat(conchFile->h, &buf) ){ - pFile->lastErrno = errno; - return SQLITE_IOERR_LOCK; - } - - if( nTries==1 ){ - conchModTime = buf.st_mtimespec; - usleep(500000); /* wait 0.5 sec and try the lock again*/ - continue; - } - - assert( nTries>1 ); - if( conchModTime.tv_sec != buf.st_mtimespec.tv_sec || - conchModTime.tv_nsec != buf.st_mtimespec.tv_nsec ){ - return SQLITE_BUSY; - } - - if( nTries==2 ){ - char tBuf[PROXY_MAXCONCHLEN]; - int len = osPread(conchFile->h, tBuf, PROXY_MAXCONCHLEN, 0); - if( len<0 ){ - pFile->lastErrno = errno; - return SQLITE_IOERR_LOCK; - } - if( len>PROXY_PATHINDEX && tBuf[0]==(char)PROXY_CONCHVERSION){ - /* don't break the lock if the host id doesn't match */ - if( 0!=memcmp(&tBuf[PROXY_HEADERLEN], myHostID, PROXY_HOSTIDLEN) ){ - return SQLITE_BUSY; - } - }else{ - /* don't break the lock on short read or a version mismatch */ - return SQLITE_BUSY; - } - usleep(10000000); /* wait 10 sec and try the lock again */ - continue; - } - - assert( nTries==3 ); - if( 0==proxyBreakConchLock(pFile, myHostID) ){ - rc = SQLITE_OK; - if( lockType==EXCLUSIVE_LOCK ){ - rc = conchFile->pMethod->xLock((sqlite3_file*)conchFile, SHARED_LOCK); - } - if( !rc ){ - rc = conchFile->pMethod->xLock((sqlite3_file*)conchFile, lockType); - } - } - } - } while( rc==SQLITE_BUSY && nTries<3 ); - - return rc; -} - -/* Takes the conch by taking a shared lock and read the contents conch, if -** lockPath is non-NULL, the host ID and lock file path must match. A NULL -** lockPath means that the lockPath in the conch file will be used if the -** host IDs match, or a new lock path will be generated automatically -** and written to the conch file. -*/ -static int proxyTakeConch(unixFile *pFile){ - proxyLockingContext *pCtx = (proxyLockingContext *)pFile->lockingContext; - - if( pCtx->conchHeld!=0 ){ - return SQLITE_OK; - }else{ - unixFile *conchFile = pCtx->conchFile; - uuid_t myHostID; - int pError = 0; - char readBuf[PROXY_MAXCONCHLEN]; - char lockPath[MAXPATHLEN]; - char *tempLockPath = NULL; - int rc = SQLITE_OK; - int createConch = 0; - int hostIdMatch = 0; - int readLen = 0; - int tryOldLockPath = 0; - int forceNewLockPath = 0; - - OSTRACE(("TAKECONCH %d for %s pid=%d\n", conchFile->h, - (pCtx->lockProxyPath ? pCtx->lockProxyPath : ":auto:"), getpid())); - - rc = proxyGetHostID(myHostID, &pError); - if( (rc&0xff)==SQLITE_IOERR ){ - pFile->lastErrno = pError; - goto end_takeconch; - } - rc = proxyConchLock(pFile, myHostID, SHARED_LOCK); - if( rc!=SQLITE_OK ){ - goto end_takeconch; - } - /* read the existing conch file */ - readLen = seekAndRead((unixFile*)conchFile, 0, readBuf, PROXY_MAXCONCHLEN); - if( readLen<0 ){ - /* I/O error: lastErrno set by seekAndRead */ - pFile->lastErrno = conchFile->lastErrno; - rc = SQLITE_IOERR_READ; - goto end_takeconch; - }else if( readLen<=(PROXY_HEADERLEN+PROXY_HOSTIDLEN) || - readBuf[0]!=(char)PROXY_CONCHVERSION ){ - /* a short read or version format mismatch means we need to create a new - ** conch file. - */ - createConch = 1; - } - /* if the host id matches and the lock path already exists in the conch - ** we'll try to use the path there, if we can't open that path, we'll - ** retry with a new auto-generated path - */ - do { /* in case we need to try again for an :auto: named lock file */ - - if( !createConch && !forceNewLockPath ){ - hostIdMatch = !memcmp(&readBuf[PROXY_HEADERLEN], myHostID, - PROXY_HOSTIDLEN); - /* if the conch has data compare the contents */ - if( !pCtx->lockProxyPath ){ - /* for auto-named local lock file, just check the host ID and we'll - ** use the local lock file path that's already in there - */ - if( hostIdMatch ){ - size_t pathLen = (readLen - PROXY_PATHINDEX); - - if( pathLen>=MAXPATHLEN ){ - pathLen=MAXPATHLEN-1; - } - memcpy(lockPath, &readBuf[PROXY_PATHINDEX], pathLen); - lockPath[pathLen] = 0; - tempLockPath = lockPath; - tryOldLockPath = 1; - /* create a copy of the lock path if the conch is taken */ - goto end_takeconch; - } - }else if( hostIdMatch - && !strncmp(pCtx->lockProxyPath, &readBuf[PROXY_PATHINDEX], - readLen-PROXY_PATHINDEX) - ){ - /* conch host and lock path match */ - goto end_takeconch; - } - } - - /* if the conch isn't writable and doesn't match, we can't take it */ - if( (conchFile->openFlags&O_RDWR) == 0 ){ - rc = SQLITE_BUSY; - goto end_takeconch; - } - - /* either the conch didn't match or we need to create a new one */ - if( !pCtx->lockProxyPath ){ - proxyGetLockPath(pCtx->dbPath, lockPath, MAXPATHLEN); - tempLockPath = lockPath; - /* create a copy of the lock path _only_ if the conch is taken */ - } - - /* update conch with host and path (this will fail if other process - ** has a shared lock already), if the host id matches, use the big - ** stick. - */ - futimes(conchFile->h, NULL); - if( hostIdMatch && !createConch ){ - if( conchFile->pInode && conchFile->pInode->nShared>1 ){ - /* We are trying for an exclusive lock but another thread in this - ** same process is still holding a shared lock. */ - rc = SQLITE_BUSY; - } else { - rc = proxyConchLock(pFile, myHostID, EXCLUSIVE_LOCK); - } - }else{ - rc = conchFile->pMethod->xLock((sqlite3_file*)conchFile, EXCLUSIVE_LOCK); - } - if( rc==SQLITE_OK ){ - char writeBuffer[PROXY_MAXCONCHLEN]; - int writeSize = 0; - - writeBuffer[0] = (char)PROXY_CONCHVERSION; - memcpy(&writeBuffer[PROXY_HEADERLEN], myHostID, PROXY_HOSTIDLEN); - if( pCtx->lockProxyPath!=NULL ){ - strlcpy(&writeBuffer[PROXY_PATHINDEX], pCtx->lockProxyPath, MAXPATHLEN); - }else{ - strlcpy(&writeBuffer[PROXY_PATHINDEX], tempLockPath, MAXPATHLEN); - } - writeSize = PROXY_PATHINDEX + strlen(&writeBuffer[PROXY_PATHINDEX]); - robust_ftruncate(conchFile->h, writeSize); - rc = unixWrite((sqlite3_file *)conchFile, writeBuffer, writeSize, 0); - fsync(conchFile->h); - /* If we created a new conch file (not just updated the contents of a - ** valid conch file), try to match the permissions of the database - */ - if( rc==SQLITE_OK && createConch ){ - struct stat buf; - int err = osFstat(pFile->h, &buf); - if( err==0 ){ - mode_t cmode = buf.st_mode&(S_IRUSR|S_IWUSR | S_IRGRP|S_IWGRP | - S_IROTH|S_IWOTH); - /* try to match the database file R/W permissions, ignore failure */ -#ifndef SQLITE_PROXY_DEBUG - osFchmod(conchFile->h, cmode); -#else - do{ - rc = osFchmod(conchFile->h, cmode); - }while( rc==(-1) && errno==EINTR ); - if( rc!=0 ){ - int code = errno; - fprintf(stderr, "fchmod %o FAILED with %d %s\n", - cmode, code, strerror(code)); - } else { - fprintf(stderr, "fchmod %o SUCCEDED\n",cmode); - } - }else{ - int code = errno; - fprintf(stderr, "STAT FAILED[%d] with %d %s\n", - err, code, strerror(code)); -#endif - } - } - } - conchFile->pMethod->xUnlock((sqlite3_file*)conchFile, SHARED_LOCK); - - end_takeconch: - OSTRACE(("TRANSPROXY: CLOSE %d\n", pFile->h)); - if( rc==SQLITE_OK && pFile->openFlags ){ - int fd; - if( pFile->h>=0 ){ - robust_close(pFile, pFile->h, __LINE__); - } - pFile->h = -1; - fd = robust_open(pCtx->dbPath, pFile->openFlags, - SQLITE_DEFAULT_FILE_PERMISSIONS); - OSTRACE(("TRANSPROXY: OPEN %d\n", fd)); - if( fd>=0 ){ - pFile->h = fd; - }else{ - rc=SQLITE_CANTOPEN_BKPT; /* SQLITE_BUSY? proxyTakeConch called - during locking */ - } - } - if( rc==SQLITE_OK && !pCtx->lockProxy ){ - char *path = tempLockPath ? tempLockPath : pCtx->lockProxyPath; - rc = proxyCreateUnixFile(path, &pCtx->lockProxy, 1); - if( rc!=SQLITE_OK && rc!=SQLITE_NOMEM && tryOldLockPath ){ - /* we couldn't create the proxy lock file with the old lock file path - ** so try again via auto-naming - */ - forceNewLockPath = 1; - tryOldLockPath = 0; - continue; /* go back to the do {} while start point, try again */ - } - } - if( rc==SQLITE_OK ){ - /* Need to make a copy of path if we extracted the value - ** from the conch file or the path was allocated on the stack - */ - if( tempLockPath ){ - pCtx->lockProxyPath = sqlite3DbStrDup(0, tempLockPath); - if( !pCtx->lockProxyPath ){ - rc = SQLITE_NOMEM; - } - } - } - if( rc==SQLITE_OK ){ - pCtx->conchHeld = 1; - - if( pCtx->lockProxy->pMethod == &afpIoMethods ){ - afpLockingContext *afpCtx; - afpCtx = (afpLockingContext *)pCtx->lockProxy->lockingContext; - afpCtx->dbPath = pCtx->lockProxyPath; - } - } else { - conchFile->pMethod->xUnlock((sqlite3_file*)conchFile, NO_LOCK); - } - OSTRACE(("TAKECONCH %d %s\n", conchFile->h, - rc==SQLITE_OK?"ok":"failed")); - return rc; - } while (1); /* in case we need to retry the :auto: lock file - - ** we should never get here except via the 'continue' call. */ - } -} - -/* -** If pFile holds a lock on a conch file, then release that lock. -*/ -static int proxyReleaseConch(unixFile *pFile){ - int rc = SQLITE_OK; /* Subroutine return code */ - proxyLockingContext *pCtx; /* The locking context for the proxy lock */ - unixFile *conchFile; /* Name of the conch file */ - - pCtx = (proxyLockingContext *)pFile->lockingContext; - conchFile = pCtx->conchFile; - OSTRACE(("RELEASECONCH %d for %s pid=%d\n", conchFile->h, - (pCtx->lockProxyPath ? pCtx->lockProxyPath : ":auto:"), - getpid())); - if( pCtx->conchHeld>0 ){ - rc = conchFile->pMethod->xUnlock((sqlite3_file*)conchFile, NO_LOCK); - } - pCtx->conchHeld = 0; - OSTRACE(("RELEASECONCH %d %s\n", conchFile->h, - (rc==SQLITE_OK ? "ok" : "failed"))); - return rc; -} - -/* -** Given the name of a database file, compute the name of its conch file. -** Store the conch filename in memory obtained from sqlite3_malloc(). -** Make *pConchPath point to the new name. Return SQLITE_OK on success -** or SQLITE_NOMEM if unable to obtain memory. -** -** The caller is responsible for ensuring that the allocated memory -** space is eventually freed. -** -** *pConchPath is set to NULL if a memory allocation error occurs. -*/ -static int proxyCreateConchPathname(char *dbPath, char **pConchPath){ - int i; /* Loop counter */ - int len = (int)strlen(dbPath); /* Length of database filename - dbPath */ - char *conchPath; /* buffer in which to construct conch name */ - - /* Allocate space for the conch filename and initialize the name to - ** the name of the original database file. */ - *pConchPath = conchPath = (char *)sqlite3_malloc(len + 8); - if( conchPath==0 ){ - return SQLITE_NOMEM; - } - memcpy(conchPath, dbPath, len+1); - - /* now insert a "." before the last / character */ - for( i=(len-1); i>=0; i-- ){ - if( conchPath[i]=='/' ){ - i++; - break; - } - } - conchPath[i]='.'; - while ( ilockingContext; - char *oldPath = pCtx->lockProxyPath; - int rc = SQLITE_OK; - - if( pFile->eFileLock!=NO_LOCK ){ - return SQLITE_BUSY; - } - - /* nothing to do if the path is NULL, :auto: or matches the existing path */ - if( !path || path[0]=='\0' || !strcmp(path, ":auto:") || - (oldPath && !strncmp(oldPath, path, MAXPATHLEN)) ){ - return SQLITE_OK; - }else{ - unixFile *lockProxy = pCtx->lockProxy; - pCtx->lockProxy=NULL; - pCtx->conchHeld = 0; - if( lockProxy!=NULL ){ - rc=lockProxy->pMethod->xClose((sqlite3_file *)lockProxy); - if( rc ) return rc; - sqlite3_free(lockProxy); - } - sqlite3_free(oldPath); - pCtx->lockProxyPath = sqlite3DbStrDup(0, path); - } - - return rc; -} - -/* -** pFile is a file that has been opened by a prior xOpen call. dbPath -** is a string buffer at least MAXPATHLEN+1 characters in size. -** -** This routine find the filename associated with pFile and writes it -** int dbPath. -*/ -static int proxyGetDbPathForUnixFile(unixFile *pFile, char *dbPath){ -#if defined(__APPLE__) - if( pFile->pMethod == &afpIoMethods ){ - /* afp style keeps a reference to the db path in the filePath field - ** of the struct */ - assert( (int)strlen((char*)pFile->lockingContext)<=MAXPATHLEN ); - strlcpy(dbPath, ((afpLockingContext *)pFile->lockingContext)->dbPath, MAXPATHLEN); - } else -#endif - if( pFile->pMethod == &dotlockIoMethods ){ - /* dot lock style uses the locking context to store the dot lock - ** file path */ - int len = strlen((char *)pFile->lockingContext) - strlen(DOTLOCK_SUFFIX); - memcpy(dbPath, (char *)pFile->lockingContext, len + 1); - }else{ - /* all other styles use the locking context to store the db file path */ - assert( strlen((char*)pFile->lockingContext)<=MAXPATHLEN ); - strlcpy(dbPath, (char *)pFile->lockingContext, MAXPATHLEN); - } - return SQLITE_OK; -} - -/* -** Takes an already filled in unix file and alters it so all file locking -** will be performed on the local proxy lock file. The following fields -** are preserved in the locking context so that they can be restored and -** the unix structure properly cleaned up at close time: -** ->lockingContext -** ->pMethod -*/ -static int proxyTransformUnixFile(unixFile *pFile, const char *path) { - proxyLockingContext *pCtx; - char dbPath[MAXPATHLEN+1]; /* Name of the database file */ - char *lockPath=NULL; - int rc = SQLITE_OK; - - if( pFile->eFileLock!=NO_LOCK ){ - return SQLITE_BUSY; - } - proxyGetDbPathForUnixFile(pFile, dbPath); - if( !path || path[0]=='\0' || !strcmp(path, ":auto:") ){ - lockPath=NULL; - }else{ - lockPath=(char *)path; - } - - OSTRACE(("TRANSPROXY %d for %s pid=%d\n", pFile->h, - (lockPath ? lockPath : ":auto:"), getpid())); - - pCtx = sqlite3_malloc( sizeof(*pCtx) ); - if( pCtx==0 ){ - return SQLITE_NOMEM; - } - memset(pCtx, 0, sizeof(*pCtx)); - - rc = proxyCreateConchPathname(dbPath, &pCtx->conchFilePath); - if( rc==SQLITE_OK ){ - rc = proxyCreateUnixFile(pCtx->conchFilePath, &pCtx->conchFile, 0); - if( rc==SQLITE_CANTOPEN && ((pFile->openFlags&O_RDWR) == 0) ){ - /* if (a) the open flags are not O_RDWR, (b) the conch isn't there, and - ** (c) the file system is read-only, then enable no-locking access. - ** Ugh, since O_RDONLY==0x0000 we test for !O_RDWR since unixOpen asserts - ** that openFlags will have only one of O_RDONLY or O_RDWR. - */ - struct statfs fsInfo; - struct stat conchInfo; - int goLockless = 0; - - if( osStat(pCtx->conchFilePath, &conchInfo) == -1 ) { - int err = errno; - if( (err==ENOENT) && (statfs(dbPath, &fsInfo) != -1) ){ - goLockless = (fsInfo.f_flags&MNT_RDONLY) == MNT_RDONLY; - } - } - if( goLockless ){ - pCtx->conchHeld = -1; /* read only FS/ lockless */ - rc = SQLITE_OK; - } - } - } - if( rc==SQLITE_OK && lockPath ){ - pCtx->lockProxyPath = sqlite3DbStrDup(0, lockPath); - } - - if( rc==SQLITE_OK ){ - pCtx->dbPath = sqlite3DbStrDup(0, dbPath); - if( pCtx->dbPath==NULL ){ - rc = SQLITE_NOMEM; - } - } - if( rc==SQLITE_OK ){ - /* all memory is allocated, proxys are created and assigned, - ** switch the locking context and pMethod then return. - */ - pCtx->oldLockingContext = pFile->lockingContext; - pFile->lockingContext = pCtx; - pCtx->pOldMethod = pFile->pMethod; - pFile->pMethod = &proxyIoMethods; - }else{ - if( pCtx->conchFile ){ - pCtx->conchFile->pMethod->xClose((sqlite3_file *)pCtx->conchFile); - sqlite3_free(pCtx->conchFile); - } - sqlite3DbFree(0, pCtx->lockProxyPath); - sqlite3_free(pCtx->conchFilePath); - sqlite3_free(pCtx); - } - OSTRACE(("TRANSPROXY %d %s\n", pFile->h, - (rc==SQLITE_OK ? "ok" : "failed"))); - return rc; -} - - -/* -** This routine handles sqlite3_file_control() calls that are specific -** to proxy locking. -*/ -static int proxyFileControl(sqlite3_file *id, int op, void *pArg){ - switch( op ){ - case SQLITE_GET_LOCKPROXYFILE: { - unixFile *pFile = (unixFile*)id; - if( pFile->pMethod == &proxyIoMethods ){ - proxyLockingContext *pCtx = (proxyLockingContext*)pFile->lockingContext; - proxyTakeConch(pFile); - if( pCtx->lockProxyPath ){ - *(const char **)pArg = pCtx->lockProxyPath; - }else{ - *(const char **)pArg = ":auto: (not held)"; - } - } else { - *(const char **)pArg = NULL; - } - return SQLITE_OK; - } - case SQLITE_SET_LOCKPROXYFILE: { - unixFile *pFile = (unixFile*)id; - int rc = SQLITE_OK; - int isProxyStyle = (pFile->pMethod == &proxyIoMethods); - if( pArg==NULL || (const char *)pArg==0 ){ - if( isProxyStyle ){ - /* turn off proxy locking - not supported */ - rc = SQLITE_ERROR /*SQLITE_PROTOCOL? SQLITE_MISUSE?*/; - }else{ - /* turn off proxy locking - already off - NOOP */ - rc = SQLITE_OK; - } - }else{ - const char *proxyPath = (const char *)pArg; - if( isProxyStyle ){ - proxyLockingContext *pCtx = - (proxyLockingContext*)pFile->lockingContext; - if( !strcmp(pArg, ":auto:") - || (pCtx->lockProxyPath && - !strncmp(pCtx->lockProxyPath, proxyPath, MAXPATHLEN)) - ){ - rc = SQLITE_OK; - }else{ - rc = switchLockProxyPath(pFile, proxyPath); - } - }else{ - /* turn on proxy file locking */ - rc = proxyTransformUnixFile(pFile, proxyPath); - } - } - return rc; - } - default: { - assert( 0 ); /* The call assures that only valid opcodes are sent */ - } - } - /*NOTREACHED*/ - return SQLITE_ERROR; -} - -/* -** Within this division (the proxying locking implementation) the procedures -** above this point are all utilities. The lock-related methods of the -** proxy-locking sqlite3_io_method object follow. -*/ - - -/* -** This routine checks if there is a RESERVED lock held on the specified -** file by this or any other process. If such a lock is held, set *pResOut -** to a non-zero value otherwise *pResOut is set to zero. The return value -** is set to SQLITE_OK unless an I/O error occurs during lock checking. -*/ -static int proxyCheckReservedLock(sqlite3_file *id, int *pResOut) { - unixFile *pFile = (unixFile*)id; - int rc = proxyTakeConch(pFile); - if( rc==SQLITE_OK ){ - proxyLockingContext *pCtx = (proxyLockingContext *)pFile->lockingContext; - if( pCtx->conchHeld>0 ){ - unixFile *proxy = pCtx->lockProxy; - return proxy->pMethod->xCheckReservedLock((sqlite3_file*)proxy, pResOut); - }else{ /* conchHeld < 0 is lockless */ - pResOut=0; - } - } - return rc; -} - -/* -** Lock the file with the lock specified by parameter eFileLock - one -** of the following: -** -** (1) SHARED_LOCK -** (2) RESERVED_LOCK -** (3) PENDING_LOCK -** (4) EXCLUSIVE_LOCK -** -** Sometimes when requesting one lock state, additional lock states -** are inserted in between. The locking might fail on one of the later -** transitions leaving the lock state different from what it started but -** still short of its goal. The following chart shows the allowed -** transitions and the inserted intermediate states: -** -** UNLOCKED -> SHARED -** SHARED -> RESERVED -** SHARED -> (PENDING) -> EXCLUSIVE -** RESERVED -> (PENDING) -> EXCLUSIVE -** PENDING -> EXCLUSIVE -** -** This routine will only increase a lock. Use the sqlite3OsUnlock() -** routine to lower a locking level. -*/ -static int proxyLock(sqlite3_file *id, int eFileLock) { - unixFile *pFile = (unixFile*)id; - int rc = proxyTakeConch(pFile); - if( rc==SQLITE_OK ){ - proxyLockingContext *pCtx = (proxyLockingContext *)pFile->lockingContext; - if( pCtx->conchHeld>0 ){ - unixFile *proxy = pCtx->lockProxy; - rc = proxy->pMethod->xLock((sqlite3_file*)proxy, eFileLock); - pFile->eFileLock = proxy->eFileLock; - }else{ - /* conchHeld < 0 is lockless */ - } - } - return rc; -} - - -/* -** Lower the locking level on file descriptor pFile to eFileLock. eFileLock -** must be either NO_LOCK or SHARED_LOCK. -** -** If the locking level of the file descriptor is already at or below -** the requested locking level, this routine is a no-op. -*/ -static int proxyUnlock(sqlite3_file *id, int eFileLock) { - unixFile *pFile = (unixFile*)id; - int rc = proxyTakeConch(pFile); - if( rc==SQLITE_OK ){ - proxyLockingContext *pCtx = (proxyLockingContext *)pFile->lockingContext; - if( pCtx->conchHeld>0 ){ - unixFile *proxy = pCtx->lockProxy; - rc = proxy->pMethod->xUnlock((sqlite3_file*)proxy, eFileLock); - pFile->eFileLock = proxy->eFileLock; - }else{ - /* conchHeld < 0 is lockless */ - } - } - return rc; -} - -/* -** Close a file that uses proxy locks. -*/ -static int proxyClose(sqlite3_file *id) { - if( id ){ - unixFile *pFile = (unixFile*)id; - proxyLockingContext *pCtx = (proxyLockingContext *)pFile->lockingContext; - unixFile *lockProxy = pCtx->lockProxy; - unixFile *conchFile = pCtx->conchFile; - int rc = SQLITE_OK; - - if( lockProxy ){ - rc = lockProxy->pMethod->xUnlock((sqlite3_file*)lockProxy, NO_LOCK); - if( rc ) return rc; - rc = lockProxy->pMethod->xClose((sqlite3_file*)lockProxy); - if( rc ) return rc; - sqlite3_free(lockProxy); - pCtx->lockProxy = 0; - } - if( conchFile ){ - if( pCtx->conchHeld ){ - rc = proxyReleaseConch(pFile); - if( rc ) return rc; - } - rc = conchFile->pMethod->xClose((sqlite3_file*)conchFile); - if( rc ) return rc; - sqlite3_free(conchFile); - } - sqlite3DbFree(0, pCtx->lockProxyPath); - sqlite3_free(pCtx->conchFilePath); - sqlite3DbFree(0, pCtx->dbPath); - /* restore the original locking context and pMethod then close it */ - pFile->lockingContext = pCtx->oldLockingContext; - pFile->pMethod = pCtx->pOldMethod; - sqlite3_free(pCtx); - return pFile->pMethod->xClose(id); - } - return SQLITE_OK; -} - - - -#endif /* defined(__APPLE__) && SQLITE_ENABLE_LOCKING_STYLE */ -/* -** The proxy locking style is intended for use with AFP filesystems. -** And since AFP is only supported on MacOSX, the proxy locking is also -** restricted to MacOSX. -** -** -******************* End of the proxy lock implementation ********************** -******************************************************************************/ - -/* -** Initialize the operating system interface. -** -** This routine registers all VFS implementations for unix-like operating -** systems. This routine, and the sqlite3_os_end() routine that follows, -** should be the only routines in this file that are visible from other -** files. -** -** This routine is called once during SQLite initialization and by a -** single thread. The memory allocation and mutex subsystems have not -** necessarily been initialized when this routine is called, and so they -** should not be used. -*/ -int sqlite3_os_init(void){ - /* - ** The following macro defines an initializer for an sqlite3_vfs object. - ** The name of the VFS is NAME. The pAppData is a pointer to a pointer - ** to the "finder" function. (pAppData is a pointer to a pointer because - ** silly C90 rules prohibit a void* from being cast to a function pointer - ** and so we have to go through the intermediate pointer to avoid problems - ** when compiling with -pedantic-errors on GCC.) - ** - ** The FINDER parameter to this macro is the name of the pointer to the - ** finder-function. The finder-function returns a pointer to the - ** sqlite_io_methods object that implements the desired locking - ** behaviors. See the division above that contains the IOMETHODS - ** macro for addition information on finder-functions. - ** - ** Most finders simply return a pointer to a fixed sqlite3_io_methods - ** object. But the "autolockIoFinder" available on MacOSX does a little - ** more than that; it looks at the filesystem type that hosts the - ** database file and tries to choose an locking method appropriate for - ** that filesystem time. - */ - #define UNIXVFS(VFSNAME, FINDER) { \ - 3, /* iVersion */ \ - sizeof(unixFile), /* szOsFile */ \ - MAX_PATHNAME, /* mxPathname */ \ - 0, /* pNext */ \ - VFSNAME, /* zName */ \ - (void*)&FINDER, /* pAppData */ \ - unixOpen, /* xOpen */ \ - unixDelete, /* xDelete */ \ - unixAccess, /* xAccess */ \ - unixFullPathname, /* xFullPathname */ \ - unixDlOpen, /* xDlOpen */ \ - unixDlError, /* xDlError */ \ - unixDlSym, /* xDlSym */ \ - unixDlClose, /* xDlClose */ \ - unixRandomness, /* xRandomness */ \ - unixSleep, /* xSleep */ \ - unixCurrentTime, /* xCurrentTime */ \ - unixGetLastError, /* xGetLastError */ \ - unixCurrentTimeInt64, /* xCurrentTimeInt64 */ \ - unixSetSystemCall, /* xSetSystemCall */ \ - unixGetSystemCall, /* xGetSystemCall */ \ - unixNextSystemCall, /* xNextSystemCall */ \ - } - - /* - ** All default VFSes for unix are contained in the following array. - ** - ** Note that the sqlite3_vfs.pNext field of the VFS object is modified - ** by the SQLite core when the VFS is registered. So the following - ** array cannot be const. - */ - static sqlite3_vfs aVfs[] = { -#if SQLITE_ENABLE_LOCKING_STYLE && (OS_VXWORKS || defined(__APPLE__)) - UNIXVFS("unix", autolockIoFinder ), -#else - UNIXVFS("unix", posixIoFinder ), -#endif - UNIXVFS("unix-none", nolockIoFinder ), - UNIXVFS("unix-dotfile", dotlockIoFinder ), - UNIXVFS("unix-excl", posixIoFinder ), -#if OS_VXWORKS - UNIXVFS("unix-namedsem", semIoFinder ), -#endif -#if SQLITE_ENABLE_LOCKING_STYLE - UNIXVFS("unix-posix", posixIoFinder ), -#if !OS_VXWORKS - UNIXVFS("unix-flock", flockIoFinder ), -#endif -#endif -#if SQLITE_ENABLE_LOCKING_STYLE && defined(__APPLE__) - UNIXVFS("unix-afp", afpIoFinder ), - UNIXVFS("unix-nfs", nfsIoFinder ), - UNIXVFS("unix-proxy", proxyIoFinder ), -#endif - }; - unsigned int i; /* Loop counter */ - - /* Double-check that the aSyscall[] array has been constructed - ** correctly. See ticket [bb3a86e890c8e96ab] */ - assert( ArraySize(aSyscall)==18 ); - - /* Register all VFSes defined in the aVfs[] array */ - for(i=0; i<(sizeof(aVfs)/sizeof(sqlite3_vfs)); i++){ - sqlite3_vfs_register(&aVfs[i], i==0); - } - -#if defined(UFFS_TEST) - os_uffs_init(); -#endif - - return SQLITE_OK; -} - -/* -** Shutdown the operating system interface. -** -** Some operating systems might need to do some cleanup in this routine, -** to release dynamically allocated objects. But not on unix. -** This routine is a no-op for unix. -*/ -int sqlite3_os_end(void){ - return SQLITE_OK; -} - -#endif /* SQLITE_OS_UNIX */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/os_win.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/os_win.c deleted file mode 100644 index 216bf674bc..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/os_win.c +++ /dev/null @@ -1,3204 +0,0 @@ -/* -** 2004 May 22 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -****************************************************************************** -** -** This file contains code that is specific to windows. -*/ -#include "sqliteInt.h" -#if SQLITE_OS_WIN /* This file is used for windows only */ - - -/* -** A Note About Memory Allocation: -** -** This driver uses malloc()/free() directly rather than going through -** the SQLite-wrappers sqlite3_malloc()/sqlite3_free(). Those wrappers -** are designed for use on embedded systems where memory is scarce and -** malloc failures happen frequently. Win32 does not typically run on -** embedded systems, and when it does the developers normally have bigger -** problems to worry about than running out of memory. So there is not -** a compelling need to use the wrappers. -** -** But there is a good reason to not use the wrappers. If we use the -** wrappers then we will get simulated malloc() failures within this -** driver. And that causes all kinds of problems for our tests. We -** could enhance SQLite to deal with simulated malloc failures within -** the OS driver, but the code to deal with those failure would not -** be exercised on Linux (which does not need to malloc() in the driver) -** and so we would have difficulty writing coverage tests for that -** code. Better to leave the code out, we think. -** -** The point of this discussion is as follows: When creating a new -** OS layer for an embedded system, if you use this file as an example, -** avoid the use of malloc()/free(). Those routines work ok on windows -** desktops but not so well in embedded systems. -*/ - -#include - -#ifdef __CYGWIN__ -# include -#endif - -/* -** Macros used to determine whether or not to use threads. -*/ -#if defined(THREADSAFE) && THREADSAFE -# define SQLITE_W32_THREADS 1 -#endif - -/* -** Include code that is common to all os_*.c files -*/ -#include "os_common.h" - -/* -** Some microsoft compilers lack this definition. -*/ -#ifndef INVALID_FILE_ATTRIBUTES -# define INVALID_FILE_ATTRIBUTES ((DWORD)-1) -#endif - -/* -** Determine if we are dealing with WindowsCE - which has a much -** reduced API. -*/ -#if SQLITE_OS_WINCE -# define AreFileApisANSI() 1 -# define FormatMessageW(a,b,c,d,e,f,g) 0 -#endif - -/* Forward references */ -typedef struct winShm winShm; /* A connection to shared-memory */ -typedef struct winShmNode winShmNode; /* A region of shared-memory */ - -/* -** WinCE lacks native support for file locking so we have to fake it -** with some code of our own. -*/ -#if SQLITE_OS_WINCE -typedef struct winceLock { - int nReaders; /* Number of reader locks obtained */ - BOOL bPending; /* Indicates a pending lock has been obtained */ - BOOL bReserved; /* Indicates a reserved lock has been obtained */ - BOOL bExclusive; /* Indicates an exclusive lock has been obtained */ -} winceLock; -#endif - -/* -** The winFile structure is a subclass of sqlite3_file* specific to the win32 -** portability layer. -*/ -typedef struct winFile winFile; -struct winFile { - const sqlite3_io_methods *pMethod; /*** Must be first ***/ - sqlite3_vfs *pVfs; /* The VFS used to open this file */ - HANDLE h; /* Handle for accessing the file */ - u8 locktype; /* Type of lock currently held on this file */ - short sharedLockByte; /* Randomly chosen byte used as a shared lock */ - u8 bPersistWal; /* True to persist WAL files */ - DWORD lastErrno; /* The Windows errno from the last I/O error */ - DWORD sectorSize; /* Sector size of the device file is on */ - winShm *pShm; /* Instance of shared memory on this file */ - const char *zPath; /* Full pathname of this file */ - int szChunk; /* Chunk size configured by FCNTL_CHUNK_SIZE */ -#if SQLITE_OS_WINCE - WCHAR *zDeleteOnClose; /* Name of file to delete when closing */ - HANDLE hMutex; /* Mutex used to control access to shared lock */ - HANDLE hShared; /* Shared memory segment used for locking */ - winceLock local; /* Locks obtained by this instance of winFile */ - winceLock *shared; /* Global shared lock memory for the file */ -#endif -}; - -/* - * If compiled with SQLITE_WIN32_MALLOC on Windows, we will use the - * various Win32 API heap functions instead of our own. - */ -#ifdef SQLITE_WIN32_MALLOC -/* - * The initial size of the Win32-specific heap. This value may be zero. - */ -#ifndef SQLITE_WIN32_HEAP_INIT_SIZE -# define SQLITE_WIN32_HEAP_INIT_SIZE ((SQLITE_DEFAULT_CACHE_SIZE) * \ - (SQLITE_DEFAULT_PAGE_SIZE) + 4194304) -#endif - -/* - * The maximum size of the Win32-specific heap. This value may be zero. - */ -#ifndef SQLITE_WIN32_HEAP_MAX_SIZE -# define SQLITE_WIN32_HEAP_MAX_SIZE (0) -#endif - -/* - * The extra flags to use in calls to the Win32 heap APIs. This value may be - * zero for the default behavior. - */ -#ifndef SQLITE_WIN32_HEAP_FLAGS -# define SQLITE_WIN32_HEAP_FLAGS (0) -#endif - -/* -** The winMemData structure stores information required by the Win32-specific -** sqlite3_mem_methods implementation. -*/ -typedef struct winMemData winMemData; -struct winMemData { -#ifndef NDEBUG - u32 magic; /* Magic number to detect structure corruption. */ -#endif - HANDLE hHeap; /* The handle to our heap. */ - BOOL bOwned; /* Do we own the heap (i.e. destroy it on shutdown)? */ -}; - -#ifndef NDEBUG -#define WINMEM_MAGIC 0x42b2830b -#endif - -static struct winMemData win_mem_data = { -#ifndef NDEBUG - WINMEM_MAGIC, -#endif - NULL, FALSE -}; - -#ifndef NDEBUG -#define winMemAssertMagic() assert( win_mem_data.magic==WINMEM_MAGIC ) -#else -#define winMemAssertMagic() -#endif - -#define winMemGetHeap() win_mem_data.hHeap - -static void *winMemMalloc(int nBytes); -static void winMemFree(void *pPrior); -static void *winMemRealloc(void *pPrior, int nBytes); -static int winMemSize(void *p); -static int winMemRoundup(int n); -static int winMemInit(void *pAppData); -static void winMemShutdown(void *pAppData); - -const sqlite3_mem_methods *sqlite3MemGetWin32(void); -#endif /* SQLITE_WIN32_MALLOC */ - -/* -** Forward prototypes. -*/ -static int getSectorSize( - sqlite3_vfs *pVfs, - const char *zRelative /* UTF-8 file name */ -); - -/* -** The following variable is (normally) set once and never changes -** thereafter. It records whether the operating system is Win95 -** or WinNT. -** -** 0: Operating system unknown. -** 1: Operating system is Win95. -** 2: Operating system is WinNT. -** -** In order to facilitate testing on a WinNT system, the test fixture -** can manually set this value to 1 to emulate Win98 behavior. -*/ -#ifdef SQLITE_TEST -int sqlite3_os_type = 0; -#else -static int sqlite3_os_type = 0; -#endif - -/* -** Return true (non-zero) if we are running under WinNT, Win2K, WinXP, -** or WinCE. Return false (zero) for Win95, Win98, or WinME. -** -** Here is an interesting observation: Win95, Win98, and WinME lack -** the LockFileEx() API. But we can still statically link against that -** API as long as we don't call it when running Win95/98/ME. A call to -** this routine is used to determine if the host is Win95/98/ME or -** WinNT/2K/XP so that we will know whether or not we can safely call -** the LockFileEx() API. -*/ -#if SQLITE_OS_WINCE -# define isNT() (1) -#else - static int isNT(void){ - if( sqlite3_os_type==0 ){ - OSVERSIONINFO sInfo; - sInfo.dwOSVersionInfoSize = sizeof(sInfo); - GetVersionEx(&sInfo); - sqlite3_os_type = sInfo.dwPlatformId==VER_PLATFORM_WIN32_NT ? 2 : 1; - } - return sqlite3_os_type==2; - } -#endif /* SQLITE_OS_WINCE */ - -#ifdef SQLITE_WIN32_MALLOC -/* -** Allocate nBytes of memory. -*/ -static void *winMemMalloc(int nBytes){ - HANDLE hHeap; - void *p; - - winMemAssertMagic(); - hHeap = winMemGetHeap(); - assert( hHeap!=0 ); - assert( hHeap!=INVALID_HANDLE_VALUE ); -#ifdef SQLITE_WIN32_MALLOC_VALIDATE - assert ( HeapValidate(hHeap, SQLITE_WIN32_HEAP_FLAGS, NULL) ); -#endif - assert( nBytes>=0 ); - p = HeapAlloc(hHeap, SQLITE_WIN32_HEAP_FLAGS, (SIZE_T)nBytes); - if( !p ){ - sqlite3_log(SQLITE_NOMEM, "failed to HeapAlloc %u bytes (%d), heap=%p", - nBytes, GetLastError(), (void*)hHeap); - } - return p; -} - -/* -** Free memory. -*/ -static void winMemFree(void *pPrior){ - HANDLE hHeap; - - winMemAssertMagic(); - hHeap = winMemGetHeap(); - assert( hHeap!=0 ); - assert( hHeap!=INVALID_HANDLE_VALUE ); -#ifdef SQLITE_WIN32_MALLOC_VALIDATE - assert ( HeapValidate(hHeap, SQLITE_WIN32_HEAP_FLAGS, pPrior) ); -#endif - if( !pPrior ) return; /* Passing NULL to HeapFree is undefined. */ - if( !HeapFree(hHeap, SQLITE_WIN32_HEAP_FLAGS, pPrior) ){ - sqlite3_log(SQLITE_NOMEM, "failed to HeapFree block %p (%d), heap=%p", - pPrior, GetLastError(), (void*)hHeap); - } -} - -/* -** Change the size of an existing memory allocation -*/ -static void *winMemRealloc(void *pPrior, int nBytes){ - HANDLE hHeap; - void *p; - - winMemAssertMagic(); - hHeap = winMemGetHeap(); - assert( hHeap!=0 ); - assert( hHeap!=INVALID_HANDLE_VALUE ); -#ifdef SQLITE_WIN32_MALLOC_VALIDATE - assert ( HeapValidate(hHeap, SQLITE_WIN32_HEAP_FLAGS, pPrior) ); -#endif - assert( nBytes>=0 ); - if( !pPrior ){ - p = HeapAlloc(hHeap, SQLITE_WIN32_HEAP_FLAGS, (SIZE_T)nBytes); - }else{ - p = HeapReAlloc(hHeap, SQLITE_WIN32_HEAP_FLAGS, pPrior, (SIZE_T)nBytes); - } - if( !p ){ - sqlite3_log(SQLITE_NOMEM, "failed to %s %u bytes (%d), heap=%p", - pPrior ? "HeapReAlloc" : "HeapAlloc", nBytes, GetLastError(), - (void*)hHeap); - } - return p; -} - -/* -** Return the size of an outstanding allocation, in bytes. -*/ -static int winMemSize(void *p){ - HANDLE hHeap; - SIZE_T n; - - winMemAssertMagic(); - hHeap = winMemGetHeap(); - assert( hHeap!=0 ); - assert( hHeap!=INVALID_HANDLE_VALUE ); -#ifdef SQLITE_WIN32_MALLOC_VALIDATE - assert ( HeapValidate(hHeap, SQLITE_WIN32_HEAP_FLAGS, NULL) ); -#endif - if( !p ) return 0; - n = HeapSize(hHeap, SQLITE_WIN32_HEAP_FLAGS, p); - if( n==(SIZE_T)-1 ){ - sqlite3_log(SQLITE_NOMEM, "failed to HeapSize block %p (%d), heap=%p", - p, GetLastError(), (void*)hHeap); - return 0; - } - return (int)n; -} - -/* -** Round up a request size to the next valid allocation size. -*/ -static int winMemRoundup(int n){ - return n; -} - -/* -** Initialize this module. -*/ -static int winMemInit(void *pAppData){ - winMemData *pWinMemData = (winMemData *)pAppData; - - if( !pWinMemData ) return SQLITE_ERROR; - assert( pWinMemData->magic==WINMEM_MAGIC ); - if( !pWinMemData->hHeap ){ - pWinMemData->hHeap = HeapCreate(SQLITE_WIN32_HEAP_FLAGS, - SQLITE_WIN32_HEAP_INIT_SIZE, - SQLITE_WIN32_HEAP_MAX_SIZE); - if( !pWinMemData->hHeap ){ - sqlite3_log(SQLITE_NOMEM, - "failed to HeapCreate (%d), flags=%u, initSize=%u, maxSize=%u", - GetLastError(), SQLITE_WIN32_HEAP_FLAGS, SQLITE_WIN32_HEAP_INIT_SIZE, - SQLITE_WIN32_HEAP_MAX_SIZE); - return SQLITE_NOMEM; - } - pWinMemData->bOwned = TRUE; - } - assert( pWinMemData->hHeap!=0 ); - assert( pWinMemData->hHeap!=INVALID_HANDLE_VALUE ); -#ifdef SQLITE_WIN32_MALLOC_VALIDATE - assert( HeapValidate(pWinMemData->hHeap, SQLITE_WIN32_HEAP_FLAGS, NULL) ); -#endif - return SQLITE_OK; -} - -/* -** Deinitialize this module. -*/ -static void winMemShutdown(void *pAppData){ - winMemData *pWinMemData = (winMemData *)pAppData; - - if( !pWinMemData ) return; - if( pWinMemData->hHeap ){ - assert( pWinMemData->hHeap!=INVALID_HANDLE_VALUE ); -#ifdef SQLITE_WIN32_MALLOC_VALIDATE - assert( HeapValidate(pWinMemData->hHeap, SQLITE_WIN32_HEAP_FLAGS, NULL) ); -#endif - if( pWinMemData->bOwned ){ - if( !HeapDestroy(pWinMemData->hHeap) ){ - sqlite3_log(SQLITE_NOMEM, "failed to HeapDestroy (%d), heap=%p", - GetLastError(), (void*)pWinMemData->hHeap); - } - pWinMemData->bOwned = FALSE; - } - pWinMemData->hHeap = NULL; - } -} - -/* -** Populate the low-level memory allocation function pointers in -** sqlite3GlobalConfig.m with pointers to the routines in this file. The -** arguments specify the block of memory to manage. -** -** This routine is only called by sqlite3_config(), and therefore -** is not required to be threadsafe (it is not). -*/ -const sqlite3_mem_methods *sqlite3MemGetWin32(void){ - static const sqlite3_mem_methods winMemMethods = { - winMemMalloc, - winMemFree, - winMemRealloc, - winMemSize, - winMemRoundup, - winMemInit, - winMemShutdown, - &win_mem_data - }; - return &winMemMethods; -} - -void sqlite3MemSetDefault(void){ - sqlite3_config(SQLITE_CONFIG_MALLOC, sqlite3MemGetWin32()); -} -#endif /* SQLITE_WIN32_MALLOC */ - -/* -** Convert a UTF-8 string to microsoft unicode (UTF-16?). -** -** Space to hold the returned string is obtained from malloc. -*/ -static WCHAR *utf8ToUnicode(const char *zFilename){ - int nChar; - WCHAR *zWideFilename; - - nChar = MultiByteToWideChar(CP_UTF8, 0, zFilename, -1, NULL, 0); - zWideFilename = malloc( nChar*sizeof(zWideFilename[0]) ); - if( zWideFilename==0 ){ - return 0; - } - nChar = MultiByteToWideChar(CP_UTF8, 0, zFilename, -1, zWideFilename, nChar); - if( nChar==0 ){ - free(zWideFilename); - zWideFilename = 0; - } - return zWideFilename; -} - -/* -** Convert microsoft unicode to UTF-8. Space to hold the returned string is -** obtained from malloc(). -*/ -static char *unicodeToUtf8(const WCHAR *zWideFilename){ - int nByte; - char *zFilename; - - nByte = WideCharToMultiByte(CP_UTF8, 0, zWideFilename, -1, 0, 0, 0, 0); - zFilename = malloc( nByte ); - if( zFilename==0 ){ - return 0; - } - nByte = WideCharToMultiByte(CP_UTF8, 0, zWideFilename, -1, zFilename, nByte, - 0, 0); - if( nByte == 0 ){ - free(zFilename); - zFilename = 0; - } - return zFilename; -} - -/* -** Convert an ansi string to microsoft unicode, based on the -** current codepage settings for file apis. -** -** Space to hold the returned string is obtained -** from malloc. -*/ -static WCHAR *mbcsToUnicode(const char *zFilename){ - int nByte; - WCHAR *zMbcsFilename; - int codepage = AreFileApisANSI() ? CP_ACP : CP_OEMCP; - - nByte = MultiByteToWideChar(codepage, 0, zFilename, -1, NULL,0)*sizeof(WCHAR); - zMbcsFilename = malloc( nByte*sizeof(zMbcsFilename[0]) ); - if( zMbcsFilename==0 ){ - return 0; - } - nByte = MultiByteToWideChar(codepage, 0, zFilename, -1, zMbcsFilename, nByte); - if( nByte==0 ){ - free(zMbcsFilename); - zMbcsFilename = 0; - } - return zMbcsFilename; -} - -/* -** Convert microsoft unicode to multibyte character string, based on the -** user's Ansi codepage. -** -** Space to hold the returned string is obtained from -** malloc(). -*/ -static char *unicodeToMbcs(const WCHAR *zWideFilename){ - int nByte; - char *zFilename; - int codepage = AreFileApisANSI() ? CP_ACP : CP_OEMCP; - - nByte = WideCharToMultiByte(codepage, 0, zWideFilename, -1, 0, 0, 0, 0); - zFilename = malloc( nByte ); - if( zFilename==0 ){ - return 0; - } - nByte = WideCharToMultiByte(codepage, 0, zWideFilename, -1, zFilename, nByte, - 0, 0); - if( nByte == 0 ){ - free(zFilename); - zFilename = 0; - } - return zFilename; -} - -/* -** Convert multibyte character string to UTF-8. Space to hold the -** returned string is obtained from malloc(). -*/ -char *sqlite3_win32_mbcs_to_utf8(const char *zFilename){ - char *zFilenameUtf8; - WCHAR *zTmpWide; - - zTmpWide = mbcsToUnicode(zFilename); - if( zTmpWide==0 ){ - return 0; - } - zFilenameUtf8 = unicodeToUtf8(zTmpWide); - free(zTmpWide); - return zFilenameUtf8; -} - -/* -** Convert UTF-8 to multibyte character string. Space to hold the -** returned string is obtained from malloc(). -*/ -char *sqlite3_win32_utf8_to_mbcs(const char *zFilename){ - char *zFilenameMbcs; - WCHAR *zTmpWide; - - zTmpWide = utf8ToUnicode(zFilename); - if( zTmpWide==0 ){ - return 0; - } - zFilenameMbcs = unicodeToMbcs(zTmpWide); - free(zTmpWide); - return zFilenameMbcs; -} - - -/* -** The return value of getLastErrorMsg -** is zero if the error message fits in the buffer, or non-zero -** otherwise (if the message was truncated). -*/ -static int getLastErrorMsg(int nBuf, char *zBuf){ - /* FormatMessage returns 0 on failure. Otherwise it - ** returns the number of TCHARs written to the output - ** buffer, excluding the terminating null char. - */ - DWORD error = GetLastError(); - DWORD dwLen = 0; - char *zOut = 0; - - if( isNT() ){ - WCHAR *zTempWide = NULL; - dwLen = FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, - NULL, - error, - 0, - (LPWSTR) &zTempWide, - 0, - 0); - if( dwLen > 0 ){ - /* allocate a buffer and convert to UTF8 */ - zOut = unicodeToUtf8(zTempWide); - /* free the system buffer allocated by FormatMessage */ - LocalFree(zTempWide); - } -/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed. -** Since the ASCII version of these Windows API do not exist for WINCE, -** it's important to not reference them for WINCE builds. -*/ -#if SQLITE_OS_WINCE==0 - }else{ - char *zTemp = NULL; - dwLen = FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, - NULL, - error, - 0, - (LPSTR) &zTemp, - 0, - 0); - if( dwLen > 0 ){ - /* allocate a buffer and convert to UTF8 */ - zOut = sqlite3_win32_mbcs_to_utf8(zTemp); - /* free the system buffer allocated by FormatMessage */ - LocalFree(zTemp); - } -#endif - } - if( 0 == dwLen ){ - sqlite3_snprintf(nBuf, zBuf, "OsError 0x%x (%u)", error, error); - }else{ - /* copy a maximum of nBuf chars to output buffer */ - sqlite3_snprintf(nBuf, zBuf, "%s", zOut); - /* free the UTF8 buffer */ - free(zOut); - } - return 0; -} - -/* -** -** This function - winLogErrorAtLine() - is only ever called via the macro -** winLogError(). -** -** This routine is invoked after an error occurs in an OS function. -** It logs a message using sqlite3_log() containing the current value of -** error code and, if possible, the human-readable equivalent from -** FormatMessage. -** -** The first argument passed to the macro should be the error code that -** will be returned to SQLite (e.g. SQLITE_IOERR_DELETE, SQLITE_CANTOPEN). -** The two subsequent arguments should be the name of the OS function that -** failed and the the associated file-system path, if any. -*/ -#define winLogError(a,b,c) winLogErrorAtLine(a,b,c,__LINE__) -static int winLogErrorAtLine( - int errcode, /* SQLite error code */ - const char *zFunc, /* Name of OS function that failed */ - const char *zPath, /* File path associated with error */ - int iLine /* Source line number where error occurred */ -){ - char zMsg[500]; /* Human readable error text */ - int i; /* Loop counter */ - DWORD iErrno = GetLastError(); /* Error code */ - - zMsg[0] = 0; - getLastErrorMsg(sizeof(zMsg), zMsg); - assert( errcode!=SQLITE_OK ); - if( zPath==0 ) zPath = ""; - for(i=0; zMsg[i] && zMsg[i]!='\r' && zMsg[i]!='\n'; i++){} - zMsg[i] = 0; - sqlite3_log(errcode, - "os_win.c:%d: (%d) %s(%s) - %s", - iLine, iErrno, zFunc, zPath, zMsg - ); - - return errcode; -} - -/* -** The number of times that a ReadFile(), WriteFile(), and DeleteFile() -** will be retried following a locking error - probably caused by -** antivirus software. Also the initial delay before the first retry. -** The delay increases linearly with each retry. -*/ -#ifndef SQLITE_WIN32_IOERR_RETRY -# define SQLITE_WIN32_IOERR_RETRY 10 -#endif -#ifndef SQLITE_WIN32_IOERR_RETRY_DELAY -# define SQLITE_WIN32_IOERR_RETRY_DELAY 25 -#endif -static int win32IoerrRetry = SQLITE_WIN32_IOERR_RETRY; -static int win32IoerrRetryDelay = SQLITE_WIN32_IOERR_RETRY_DELAY; - -/* -** If a ReadFile() or WriteFile() error occurs, invoke this routine -** to see if it should be retried. Return TRUE to retry. Return FALSE -** to give up with an error. -*/ -static int retryIoerr(int *pnRetry){ - DWORD e; - if( *pnRetry>=win32IoerrRetry ){ - return 0; - } - e = GetLastError(); - if( e==ERROR_ACCESS_DENIED || - e==ERROR_LOCK_VIOLATION || - e==ERROR_SHARING_VIOLATION ){ - Sleep(win32IoerrRetryDelay*(1+*pnRetry)); - ++*pnRetry; - return 1; - } - return 0; -} - -/* -** Log a I/O error retry episode. -*/ -static void logIoerr(int nRetry){ - if( nRetry ){ - sqlite3_log(SQLITE_IOERR, - "delayed %dms for lock/sharing conflict", - win32IoerrRetryDelay*nRetry*(nRetry+1)/2 - ); - } -} - -#if SQLITE_OS_WINCE -/************************************************************************* -** This section contains code for WinCE only. -*/ -/* -** WindowsCE does not have a localtime() function. So create a -** substitute. -*/ -#include -struct tm *__cdecl localtime(const time_t *t) -{ - static struct tm y; - FILETIME uTm, lTm; - SYSTEMTIME pTm; - sqlite3_int64 t64; - t64 = *t; - t64 = (t64 + 11644473600)*10000000; - uTm.dwLowDateTime = (DWORD)(t64 & 0xFFFFFFFF); - uTm.dwHighDateTime= (DWORD)(t64 >> 32); - FileTimeToLocalFileTime(&uTm,&lTm); - FileTimeToSystemTime(&lTm,&pTm); - y.tm_year = pTm.wYear - 1900; - y.tm_mon = pTm.wMonth - 1; - y.tm_wday = pTm.wDayOfWeek; - y.tm_mday = pTm.wDay; - y.tm_hour = pTm.wHour; - y.tm_min = pTm.wMinute; - y.tm_sec = pTm.wSecond; - return &y; -} - -/* This will never be called, but defined to make the code compile */ -#define GetTempPathA(a,b) - -#define LockFile(a,b,c,d,e) winceLockFile(&a, b, c, d, e) -#define UnlockFile(a,b,c,d,e) winceUnlockFile(&a, b, c, d, e) -#define LockFileEx(a,b,c,d,e,f) winceLockFileEx(&a, b, c, d, e, f) - -#define HANDLE_TO_WINFILE(a) (winFile*)&((char*)a)[-(int)offsetof(winFile,h)] - -/* -** Acquire a lock on the handle h -*/ -static void winceMutexAcquire(HANDLE h){ - DWORD dwErr; - do { - dwErr = WaitForSingleObject(h, INFINITE); - } while (dwErr != WAIT_OBJECT_0 && dwErr != WAIT_ABANDONED); -} -/* -** Release a lock acquired by winceMutexAcquire() -*/ -#define winceMutexRelease(h) ReleaseMutex(h) - -/* -** Create the mutex and shared memory used for locking in the file -** descriptor pFile -*/ -static BOOL winceCreateLock(const char *zFilename, winFile *pFile){ - WCHAR *zTok; - WCHAR *zName = utf8ToUnicode(zFilename); - BOOL bInit = TRUE; - - /* Initialize the local lockdata */ - ZeroMemory(&pFile->local, sizeof(pFile->local)); - - /* Replace the backslashes from the filename and lowercase it - ** to derive a mutex name. */ - zTok = CharLowerW(zName); - for (;*zTok;zTok++){ - if (*zTok == '\\') *zTok = '_'; - } - - /* Create/open the named mutex */ - pFile->hMutex = CreateMutexW(NULL, FALSE, zName); - if (!pFile->hMutex){ - pFile->lastErrno = GetLastError(); - winLogError(SQLITE_ERROR, "winceCreateLock1", zFilename); - free(zName); - return FALSE; - } - - /* Acquire the mutex before continuing */ - winceMutexAcquire(pFile->hMutex); - - /* Since the names of named mutexes, semaphores, file mappings etc are - ** case-sensitive, take advantage of that by uppercasing the mutex name - ** and using that as the shared filemapping name. - */ - CharUpperW(zName); - pFile->hShared = CreateFileMappingW(INVALID_HANDLE_VALUE, NULL, - PAGE_READWRITE, 0, sizeof(winceLock), - zName); - - /* Set a flag that indicates we're the first to create the memory so it - ** must be zero-initialized */ - if (GetLastError() == ERROR_ALREADY_EXISTS){ - bInit = FALSE; - } - - free(zName); - - /* If we succeeded in making the shared memory handle, map it. */ - if (pFile->hShared){ - pFile->shared = (winceLock*)MapViewOfFile(pFile->hShared, - FILE_MAP_READ|FILE_MAP_WRITE, 0, 0, sizeof(winceLock)); - /* If mapping failed, close the shared memory handle and erase it */ - if (!pFile->shared){ - pFile->lastErrno = GetLastError(); - winLogError(SQLITE_ERROR, "winceCreateLock2", zFilename); - CloseHandle(pFile->hShared); - pFile->hShared = NULL; - } - } - - /* If shared memory could not be created, then close the mutex and fail */ - if (pFile->hShared == NULL){ - winceMutexRelease(pFile->hMutex); - CloseHandle(pFile->hMutex); - pFile->hMutex = NULL; - return FALSE; - } - - /* Initialize the shared memory if we're supposed to */ - if (bInit) { - ZeroMemory(pFile->shared, sizeof(winceLock)); - } - - winceMutexRelease(pFile->hMutex); - return TRUE; -} - -/* -** Destroy the part of winFile that deals with wince locks -*/ -static void winceDestroyLock(winFile *pFile){ - if (pFile->hMutex){ - /* Acquire the mutex */ - winceMutexAcquire(pFile->hMutex); - - /* The following blocks should probably assert in debug mode, but they - are to cleanup in case any locks remained open */ - if (pFile->local.nReaders){ - pFile->shared->nReaders --; - } - if (pFile->local.bReserved){ - pFile->shared->bReserved = FALSE; - } - if (pFile->local.bPending){ - pFile->shared->bPending = FALSE; - } - if (pFile->local.bExclusive){ - pFile->shared->bExclusive = FALSE; - } - - /* De-reference and close our copy of the shared memory handle */ - UnmapViewOfFile(pFile->shared); - CloseHandle(pFile->hShared); - - /* Done with the mutex */ - winceMutexRelease(pFile->hMutex); - CloseHandle(pFile->hMutex); - pFile->hMutex = NULL; - } -} - -/* -** An implementation of the LockFile() API of windows for wince -*/ -static BOOL winceLockFile( - HANDLE *phFile, - DWORD dwFileOffsetLow, - DWORD dwFileOffsetHigh, - DWORD nNumberOfBytesToLockLow, - DWORD nNumberOfBytesToLockHigh -){ - winFile *pFile = HANDLE_TO_WINFILE(phFile); - BOOL bReturn = FALSE; - - UNUSED_PARAMETER(dwFileOffsetHigh); - UNUSED_PARAMETER(nNumberOfBytesToLockHigh); - - if (!pFile->hMutex) return TRUE; - winceMutexAcquire(pFile->hMutex); - - /* Wanting an exclusive lock? */ - if (dwFileOffsetLow == (DWORD)SHARED_FIRST - && nNumberOfBytesToLockLow == (DWORD)SHARED_SIZE){ - if (pFile->shared->nReaders == 0 && pFile->shared->bExclusive == 0){ - pFile->shared->bExclusive = TRUE; - pFile->local.bExclusive = TRUE; - bReturn = TRUE; - } - } - - /* Want a read-only lock? */ - else if (dwFileOffsetLow == (DWORD)SHARED_FIRST && - nNumberOfBytesToLockLow == 1){ - if (pFile->shared->bExclusive == 0){ - pFile->local.nReaders ++; - if (pFile->local.nReaders == 1){ - pFile->shared->nReaders ++; - } - bReturn = TRUE; - } - } - - /* Want a pending lock? */ - else if (dwFileOffsetLow == (DWORD)PENDING_BYTE && nNumberOfBytesToLockLow == 1){ - /* If no pending lock has been acquired, then acquire it */ - if (pFile->shared->bPending == 0) { - pFile->shared->bPending = TRUE; - pFile->local.bPending = TRUE; - bReturn = TRUE; - } - } - - /* Want a reserved lock? */ - else if (dwFileOffsetLow == (DWORD)RESERVED_BYTE && nNumberOfBytesToLockLow == 1){ - if (pFile->shared->bReserved == 0) { - pFile->shared->bReserved = TRUE; - pFile->local.bReserved = TRUE; - bReturn = TRUE; - } - } - - winceMutexRelease(pFile->hMutex); - return bReturn; -} - -/* -** An implementation of the UnlockFile API of windows for wince -*/ -static BOOL winceUnlockFile( - HANDLE *phFile, - DWORD dwFileOffsetLow, - DWORD dwFileOffsetHigh, - DWORD nNumberOfBytesToUnlockLow, - DWORD nNumberOfBytesToUnlockHigh -){ - winFile *pFile = HANDLE_TO_WINFILE(phFile); - BOOL bReturn = FALSE; - - UNUSED_PARAMETER(dwFileOffsetHigh); - UNUSED_PARAMETER(nNumberOfBytesToUnlockHigh); - - if (!pFile->hMutex) return TRUE; - winceMutexAcquire(pFile->hMutex); - - /* Releasing a reader lock or an exclusive lock */ - if (dwFileOffsetLow == (DWORD)SHARED_FIRST){ - /* Did we have an exclusive lock? */ - if (pFile->local.bExclusive){ - assert(nNumberOfBytesToUnlockLow == (DWORD)SHARED_SIZE); - pFile->local.bExclusive = FALSE; - pFile->shared->bExclusive = FALSE; - bReturn = TRUE; - } - - /* Did we just have a reader lock? */ - else if (pFile->local.nReaders){ - assert(nNumberOfBytesToUnlockLow == (DWORD)SHARED_SIZE || nNumberOfBytesToUnlockLow == 1); - pFile->local.nReaders --; - if (pFile->local.nReaders == 0) - { - pFile->shared->nReaders --; - } - bReturn = TRUE; - } - } - - /* Releasing a pending lock */ - else if (dwFileOffsetLow == (DWORD)PENDING_BYTE && nNumberOfBytesToUnlockLow == 1){ - if (pFile->local.bPending){ - pFile->local.bPending = FALSE; - pFile->shared->bPending = FALSE; - bReturn = TRUE; - } - } - /* Releasing a reserved lock */ - else if (dwFileOffsetLow == (DWORD)RESERVED_BYTE && nNumberOfBytesToUnlockLow == 1){ - if (pFile->local.bReserved) { - pFile->local.bReserved = FALSE; - pFile->shared->bReserved = FALSE; - bReturn = TRUE; - } - } - - winceMutexRelease(pFile->hMutex); - return bReturn; -} - -/* -** An implementation of the LockFileEx() API of windows for wince -*/ -static BOOL winceLockFileEx( - HANDLE *phFile, - DWORD dwFlags, - DWORD dwReserved, - DWORD nNumberOfBytesToLockLow, - DWORD nNumberOfBytesToLockHigh, - LPOVERLAPPED lpOverlapped -){ - UNUSED_PARAMETER(dwReserved); - UNUSED_PARAMETER(nNumberOfBytesToLockHigh); - - /* If the caller wants a shared read lock, forward this call - ** to winceLockFile */ - if (lpOverlapped->Offset == (DWORD)SHARED_FIRST && - dwFlags == 1 && - nNumberOfBytesToLockLow == (DWORD)SHARED_SIZE){ - return winceLockFile(phFile, SHARED_FIRST, 0, 1, 0); - } - return FALSE; -} -/* -** End of the special code for wince -*****************************************************************************/ -#endif /* SQLITE_OS_WINCE */ - -/***************************************************************************** -** The next group of routines implement the I/O methods specified -** by the sqlite3_io_methods object. -******************************************************************************/ - -/* -** Some microsoft compilers lack this definition. -*/ -#ifndef INVALID_SET_FILE_POINTER -# define INVALID_SET_FILE_POINTER ((DWORD)-1) -#endif - -/* -** Move the current position of the file handle passed as the first -** argument to offset iOffset within the file. If successful, return 0. -** Otherwise, set pFile->lastErrno and return non-zero. -*/ -static int seekWinFile(winFile *pFile, sqlite3_int64 iOffset){ - LONG upperBits; /* Most sig. 32 bits of new offset */ - LONG lowerBits; /* Least sig. 32 bits of new offset */ - DWORD dwRet; /* Value returned by SetFilePointer() */ - - upperBits = (LONG)((iOffset>>32) & 0x7fffffff); - lowerBits = (LONG)(iOffset & 0xffffffff); - - /* API oddity: If successful, SetFilePointer() returns a dword - ** containing the lower 32-bits of the new file-offset. Or, if it fails, - ** it returns INVALID_SET_FILE_POINTER. However according to MSDN, - ** INVALID_SET_FILE_POINTER may also be a valid new offset. So to determine - ** whether an error has actually occured, it is also necessary to call - ** GetLastError(). - */ - dwRet = SetFilePointer(pFile->h, lowerBits, &upperBits, FILE_BEGIN); - if( (dwRet==INVALID_SET_FILE_POINTER && GetLastError()!=NO_ERROR) ){ - pFile->lastErrno = GetLastError(); - winLogError(SQLITE_IOERR_SEEK, "seekWinFile", pFile->zPath); - return 1; - } - - return 0; -} - -/* -** Close a file. -** -** It is reported that an attempt to close a handle might sometimes -** fail. This is a very unreasonable result, but windows is notorious -** for being unreasonable so I do not doubt that it might happen. If -** the close fails, we pause for 100 milliseconds and try again. As -** many as MX_CLOSE_ATTEMPT attempts to close the handle are made before -** giving up and returning an error. -*/ -#define MX_CLOSE_ATTEMPT 3 -static int winClose(sqlite3_file *id){ - int rc, cnt = 0; - winFile *pFile = (winFile*)id; - - assert( id!=0 ); - assert( pFile->pShm==0 ); - OSTRACE(("CLOSE %d\n", pFile->h)); - do{ - rc = CloseHandle(pFile->h); - /* SimulateIOError( rc=0; cnt=MX_CLOSE_ATTEMPT; ); */ - }while( rc==0 && ++cnt < MX_CLOSE_ATTEMPT && (Sleep(100), 1) ); -#if SQLITE_OS_WINCE -#define WINCE_DELETION_ATTEMPTS 3 - winceDestroyLock(pFile); - if( pFile->zDeleteOnClose ){ - int cnt = 0; - while( - DeleteFileW(pFile->zDeleteOnClose)==0 - && GetFileAttributesW(pFile->zDeleteOnClose)!=0xffffffff - && cnt++ < WINCE_DELETION_ATTEMPTS - ){ - Sleep(100); /* Wait a little before trying again */ - } - free(pFile->zDeleteOnClose); - } -#endif - OSTRACE(("CLOSE %d %s\n", pFile->h, rc ? "ok" : "failed")); - OpenCounter(-1); - return rc ? SQLITE_OK - : winLogError(SQLITE_IOERR_CLOSE, "winClose", pFile->zPath); -} - -/* -** Read data from a file into a buffer. Return SQLITE_OK if all -** bytes were read successfully and SQLITE_IOERR if anything goes -** wrong. -*/ -static int winRead( - sqlite3_file *id, /* File to read from */ - void *pBuf, /* Write content into this buffer */ - int amt, /* Number of bytes to read */ - sqlite3_int64 offset /* Begin reading at this offset */ -){ - winFile *pFile = (winFile*)id; /* file handle */ - DWORD nRead; /* Number of bytes actually read from file */ - int nRetry = 0; /* Number of retrys */ - - assert( id!=0 ); - SimulateIOError(return SQLITE_IOERR_READ); - OSTRACE(("READ %d lock=%d\n", pFile->h, pFile->locktype)); - - if( seekWinFile(pFile, offset) ){ - return SQLITE_FULL; - } - while( !ReadFile(pFile->h, pBuf, amt, &nRead, 0) ){ - if( retryIoerr(&nRetry) ) continue; - pFile->lastErrno = GetLastError(); - return winLogError(SQLITE_IOERR_READ, "winRead", pFile->zPath); - } - logIoerr(nRetry); - if( nRead<(DWORD)amt ){ - /* Unread parts of the buffer must be zero-filled */ - memset(&((char*)pBuf)[nRead], 0, amt-nRead); - return SQLITE_IOERR_SHORT_READ; - } - - return SQLITE_OK; -} - -/* -** Write data from a buffer into a file. Return SQLITE_OK on success -** or some other error code on failure. -*/ -static int winWrite( - sqlite3_file *id, /* File to write into */ - const void *pBuf, /* The bytes to be written */ - int amt, /* Number of bytes to write */ - sqlite3_int64 offset /* Offset into the file to begin writing at */ -){ - int rc; /* True if error has occured, else false */ - winFile *pFile = (winFile*)id; /* File handle */ - int nRetry = 0; /* Number of retries */ - - assert( amt>0 ); - assert( pFile ); - SimulateIOError(return SQLITE_IOERR_WRITE); - SimulateDiskfullError(return SQLITE_FULL); - - OSTRACE(("WRITE %d lock=%d\n", pFile->h, pFile->locktype)); - - rc = seekWinFile(pFile, offset); - if( rc==0 ){ - u8 *aRem = (u8 *)pBuf; /* Data yet to be written */ - int nRem = amt; /* Number of bytes yet to be written */ - DWORD nWrite; /* Bytes written by each WriteFile() call */ - - while( nRem>0 ){ - if( !WriteFile(pFile->h, aRem, nRem, &nWrite, 0) ){ - if( retryIoerr(&nRetry) ) continue; - break; - } - if( nWrite<=0 ) break; - aRem += nWrite; - nRem -= nWrite; - } - if( nRem>0 ){ - pFile->lastErrno = GetLastError(); - rc = 1; - } - } - - if( rc ){ - if( ( pFile->lastErrno==ERROR_HANDLE_DISK_FULL ) - || ( pFile->lastErrno==ERROR_DISK_FULL )){ - return SQLITE_FULL; - } - return winLogError(SQLITE_IOERR_WRITE, "winWrite", pFile->zPath); - }else{ - logIoerr(nRetry); - } - return SQLITE_OK; -} - -/* -** Truncate an open file to a specified size -*/ -static int winTruncate(sqlite3_file *id, sqlite3_int64 nByte){ - winFile *pFile = (winFile*)id; /* File handle object */ - int rc = SQLITE_OK; /* Return code for this function */ - - assert( pFile ); - - OSTRACE(("TRUNCATE %d %lld\n", pFile->h, nByte)); - SimulateIOError(return SQLITE_IOERR_TRUNCATE); - - /* If the user has configured a chunk-size for this file, truncate the - ** file so that it consists of an integer number of chunks (i.e. the - ** actual file size after the operation may be larger than the requested - ** size). - */ - if( pFile->szChunk>0 ){ - nByte = ((nByte + pFile->szChunk - 1)/pFile->szChunk) * pFile->szChunk; - } - - /* SetEndOfFile() returns non-zero when successful, or zero when it fails. */ - if( seekWinFile(pFile, nByte) ){ - rc = winLogError(SQLITE_IOERR_TRUNCATE, "winTruncate1", pFile->zPath); - }else if( 0==SetEndOfFile(pFile->h) ){ - pFile->lastErrno = GetLastError(); - rc = winLogError(SQLITE_IOERR_TRUNCATE, "winTruncate2", pFile->zPath); - } - - OSTRACE(("TRUNCATE %d %lld %s\n", pFile->h, nByte, rc ? "failed" : "ok")); - return rc; -} - -#ifdef SQLITE_TEST -/* -** Count the number of fullsyncs and normal syncs. This is used to test -** that syncs and fullsyncs are occuring at the right times. -*/ -int sqlite3_sync_count = 0; -int sqlite3_fullsync_count = 0; -#endif - -/* -** Make sure all writes to a particular file are committed to disk. -*/ -static int winSync(sqlite3_file *id, int flags){ -#ifndef SQLITE_NO_SYNC - /* - ** Used only when SQLITE_NO_SYNC is not defined. - */ - BOOL rc; -#endif -#if !defined(NDEBUG) || !defined(SQLITE_NO_SYNC) || \ - (defined(SQLITE_TEST) && defined(SQLITE_DEBUG)) - /* - ** Used when SQLITE_NO_SYNC is not defined and by the assert() and/or - ** OSTRACE() macros. - */ - winFile *pFile = (winFile*)id; -#else - UNUSED_PARAMETER(id); -#endif - - assert( pFile ); - /* Check that one of SQLITE_SYNC_NORMAL or FULL was passed */ - assert((flags&0x0F)==SQLITE_SYNC_NORMAL - || (flags&0x0F)==SQLITE_SYNC_FULL - ); - - OSTRACE(("SYNC %d lock=%d\n", pFile->h, pFile->locktype)); - - /* Unix cannot, but some systems may return SQLITE_FULL from here. This - ** line is to test that doing so does not cause any problems. - */ - SimulateDiskfullError( return SQLITE_FULL ); - -#ifndef SQLITE_TEST - UNUSED_PARAMETER(flags); -#else - if( (flags&0x0F)==SQLITE_SYNC_FULL ){ - sqlite3_fullsync_count++; - } - sqlite3_sync_count++; -#endif - - /* If we compiled with the SQLITE_NO_SYNC flag, then syncing is a - ** no-op - */ -#ifdef SQLITE_NO_SYNC - return SQLITE_OK; -#else - rc = FlushFileBuffers(pFile->h); - SimulateIOError( rc=FALSE ); - if( rc ){ - return SQLITE_OK; - }else{ - pFile->lastErrno = GetLastError(); - return winLogError(SQLITE_IOERR_FSYNC, "winSync", pFile->zPath); - } -#endif -} - -/* -** Determine the current size of a file in bytes -*/ -static int winFileSize(sqlite3_file *id, sqlite3_int64 *pSize){ - DWORD upperBits; - DWORD lowerBits; - winFile *pFile = (winFile*)id; - DWORD error; - - assert( id!=0 ); - SimulateIOError(return SQLITE_IOERR_FSTAT); - lowerBits = GetFileSize(pFile->h, &upperBits); - if( (lowerBits == INVALID_FILE_SIZE) - && ((error = GetLastError()) != NO_ERROR) ) - { - pFile->lastErrno = error; - return winLogError(SQLITE_IOERR_FSTAT, "winFileSize", pFile->zPath); - } - *pSize = (((sqlite3_int64)upperBits)<<32) + lowerBits; - return SQLITE_OK; -} - -/* -** LOCKFILE_FAIL_IMMEDIATELY is undefined on some Windows systems. -*/ -#ifndef LOCKFILE_FAIL_IMMEDIATELY -# define LOCKFILE_FAIL_IMMEDIATELY 1 -#endif - -/* -** Acquire a reader lock. -** Different API routines are called depending on whether or not this -** is Win95 or WinNT. -*/ -static int getReadLock(winFile *pFile){ - int res; - if( isNT() ){ - OVERLAPPED ovlp; - ovlp.Offset = SHARED_FIRST; - ovlp.OffsetHigh = 0; - ovlp.hEvent = 0; - res = LockFileEx(pFile->h, LOCKFILE_FAIL_IMMEDIATELY, - 0, SHARED_SIZE, 0, &ovlp); -/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed. -*/ -#if SQLITE_OS_WINCE==0 - }else{ - int lk; - sqlite3_randomness(sizeof(lk), &lk); - pFile->sharedLockByte = (short)((lk & 0x7fffffff)%(SHARED_SIZE - 1)); - res = LockFile(pFile->h, SHARED_FIRST+pFile->sharedLockByte, 0, 1, 0); -#endif - } - if( res == 0 ){ - pFile->lastErrno = GetLastError(); - /* No need to log a failure to lock */ - } - return res; -} - -/* -** Undo a readlock -*/ -static int unlockReadLock(winFile *pFile){ - int res; - if( isNT() ){ - res = UnlockFile(pFile->h, SHARED_FIRST, 0, SHARED_SIZE, 0); -/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed. -*/ -#if SQLITE_OS_WINCE==0 - }else{ - res = UnlockFile(pFile->h, SHARED_FIRST + pFile->sharedLockByte, 0, 1, 0); -#endif - } - if( res==0 && GetLastError()!=ERROR_NOT_LOCKED ){ - pFile->lastErrno = GetLastError(); - winLogError(SQLITE_IOERR_UNLOCK, "unlockReadLock", pFile->zPath); - } - return res; -} - -/* -** Lock the file with the lock specified by parameter locktype - one -** of the following: -** -** (1) SHARED_LOCK -** (2) RESERVED_LOCK -** (3) PENDING_LOCK -** (4) EXCLUSIVE_LOCK -** -** Sometimes when requesting one lock state, additional lock states -** are inserted in between. The locking might fail on one of the later -** transitions leaving the lock state different from what it started but -** still short of its goal. The following chart shows the allowed -** transitions and the inserted intermediate states: -** -** UNLOCKED -> SHARED -** SHARED -> RESERVED -** SHARED -> (PENDING) -> EXCLUSIVE -** RESERVED -> (PENDING) -> EXCLUSIVE -** PENDING -> EXCLUSIVE -** -** This routine will only increase a lock. The winUnlock() routine -** erases all locks at once and returns us immediately to locking level 0. -** It is not possible to lower the locking level one step at a time. You -** must go straight to locking level 0. -*/ -static int winLock(sqlite3_file *id, int locktype){ - int rc = SQLITE_OK; /* Return code from subroutines */ - int res = 1; /* Result of a windows lock call */ - int newLocktype; /* Set pFile->locktype to this value before exiting */ - int gotPendingLock = 0;/* True if we acquired a PENDING lock this time */ - winFile *pFile = (winFile*)id; - DWORD error = NO_ERROR; - - assert( id!=0 ); - OSTRACE(("LOCK %d %d was %d(%d)\n", - pFile->h, locktype, pFile->locktype, pFile->sharedLockByte)); - - /* If there is already a lock of this type or more restrictive on the - ** OsFile, do nothing. Don't use the end_lock: exit path, as - ** sqlite3OsEnterMutex() hasn't been called yet. - */ - if( pFile->locktype>=locktype ){ - return SQLITE_OK; - } - - /* Make sure the locking sequence is correct - */ - assert( pFile->locktype!=NO_LOCK || locktype==SHARED_LOCK ); - assert( locktype!=PENDING_LOCK ); - assert( locktype!=RESERVED_LOCK || pFile->locktype==SHARED_LOCK ); - - /* Lock the PENDING_LOCK byte if we need to acquire a PENDING lock or - ** a SHARED lock. If we are acquiring a SHARED lock, the acquisition of - ** the PENDING_LOCK byte is temporary. - */ - newLocktype = pFile->locktype; - if( (pFile->locktype==NO_LOCK) - || ( (locktype==EXCLUSIVE_LOCK) - && (pFile->locktype==RESERVED_LOCK)) - ){ - int cnt = 3; - while( cnt-->0 && (res = LockFile(pFile->h, PENDING_BYTE, 0, 1, 0))==0 ){ - /* Try 3 times to get the pending lock. The pending lock might be - ** held by another reader process who will release it momentarily. - */ - OSTRACE(("could not get a PENDING lock. cnt=%d\n", cnt)); - Sleep(1); - } - gotPendingLock = res; - if( !res ){ - error = GetLastError(); - } - } - - /* Acquire a shared lock - */ - if( locktype==SHARED_LOCK && res ){ - assert( pFile->locktype==NO_LOCK ); - res = getReadLock(pFile); - if( res ){ - newLocktype = SHARED_LOCK; - }else{ - error = GetLastError(); - } - } - - /* Acquire a RESERVED lock - */ - if( locktype==RESERVED_LOCK && res ){ - assert( pFile->locktype==SHARED_LOCK ); - res = LockFile(pFile->h, RESERVED_BYTE, 0, 1, 0); - if( res ){ - newLocktype = RESERVED_LOCK; - }else{ - error = GetLastError(); - } - } - - /* Acquire a PENDING lock - */ - if( locktype==EXCLUSIVE_LOCK && res ){ - newLocktype = PENDING_LOCK; - gotPendingLock = 0; - } - - /* Acquire an EXCLUSIVE lock - */ - if( locktype==EXCLUSIVE_LOCK && res ){ - assert( pFile->locktype>=SHARED_LOCK ); - res = unlockReadLock(pFile); - OSTRACE(("unreadlock = %d\n", res)); - res = LockFile(pFile->h, SHARED_FIRST, 0, SHARED_SIZE, 0); - if( res ){ - newLocktype = EXCLUSIVE_LOCK; - }else{ - error = GetLastError(); - OSTRACE(("error-code = %d\n", error)); - getReadLock(pFile); - } - } - - /* If we are holding a PENDING lock that ought to be released, then - ** release it now. - */ - if( gotPendingLock && locktype==SHARED_LOCK ){ - UnlockFile(pFile->h, PENDING_BYTE, 0, 1, 0); - } - - /* Update the state of the lock has held in the file descriptor then - ** return the appropriate result code. - */ - if( res ){ - rc = SQLITE_OK; - }else{ - OSTRACE(("LOCK FAILED %d trying for %d but got %d\n", pFile->h, - locktype, newLocktype)); - pFile->lastErrno = error; - rc = SQLITE_BUSY; - } - pFile->locktype = (u8)newLocktype; - return rc; -} - -/* -** This routine checks if there is a RESERVED lock held on the specified -** file by this or any other process. If such a lock is held, return -** non-zero, otherwise zero. -*/ -static int winCheckReservedLock(sqlite3_file *id, int *pResOut){ - int rc; - winFile *pFile = (winFile*)id; - - SimulateIOError( return SQLITE_IOERR_CHECKRESERVEDLOCK; ); - - assert( id!=0 ); - if( pFile->locktype>=RESERVED_LOCK ){ - rc = 1; - OSTRACE(("TEST WR-LOCK %d %d (local)\n", pFile->h, rc)); - }else{ - rc = LockFile(pFile->h, RESERVED_BYTE, 0, 1, 0); - if( rc ){ - UnlockFile(pFile->h, RESERVED_BYTE, 0, 1, 0); - } - rc = !rc; - OSTRACE(("TEST WR-LOCK %d %d (remote)\n", pFile->h, rc)); - } - *pResOut = rc; - return SQLITE_OK; -} - -/* -** Lower the locking level on file descriptor id to locktype. locktype -** must be either NO_LOCK or SHARED_LOCK. -** -** If the locking level of the file descriptor is already at or below -** the requested locking level, this routine is a no-op. -** -** It is not possible for this routine to fail if the second argument -** is NO_LOCK. If the second argument is SHARED_LOCK then this routine -** might return SQLITE_IOERR; -*/ -static int winUnlock(sqlite3_file *id, int locktype){ - int type; - winFile *pFile = (winFile*)id; - int rc = SQLITE_OK; - assert( pFile!=0 ); - assert( locktype<=SHARED_LOCK ); - OSTRACE(("UNLOCK %d to %d was %d(%d)\n", pFile->h, locktype, - pFile->locktype, pFile->sharedLockByte)); - type = pFile->locktype; - if( type>=EXCLUSIVE_LOCK ){ - UnlockFile(pFile->h, SHARED_FIRST, 0, SHARED_SIZE, 0); - if( locktype==SHARED_LOCK && !getReadLock(pFile) ){ - /* This should never happen. We should always be able to - ** reacquire the read lock */ - rc = winLogError(SQLITE_IOERR_UNLOCK, "winUnlock", pFile->zPath); - } - } - if( type>=RESERVED_LOCK ){ - UnlockFile(pFile->h, RESERVED_BYTE, 0, 1, 0); - } - if( locktype==NO_LOCK && type>=SHARED_LOCK ){ - unlockReadLock(pFile); - } - if( type>=PENDING_LOCK ){ - UnlockFile(pFile->h, PENDING_BYTE, 0, 1, 0); - } - pFile->locktype = (u8)locktype; - return rc; -} - -/* -** Control and query of the open file handle. -*/ -static int winFileControl(sqlite3_file *id, int op, void *pArg){ - winFile *pFile = (winFile*)id; - switch( op ){ - case SQLITE_FCNTL_LOCKSTATE: { - *(int*)pArg = pFile->locktype; - return SQLITE_OK; - } - case SQLITE_LAST_ERRNO: { - *(int*)pArg = (int)pFile->lastErrno; - return SQLITE_OK; - } - case SQLITE_FCNTL_CHUNK_SIZE: { - pFile->szChunk = *(int *)pArg; - return SQLITE_OK; - } - case SQLITE_FCNTL_SIZE_HINT: { - if( pFile->szChunk>0 ){ - sqlite3_int64 oldSz; - int rc = winFileSize(id, &oldSz); - if( rc==SQLITE_OK ){ - sqlite3_int64 newSz = *(sqlite3_int64*)pArg; - if( newSz>oldSz ){ - SimulateIOErrorBenign(1); - rc = winTruncate(id, newSz); - SimulateIOErrorBenign(0); - } - } - return rc; - } - return SQLITE_OK; - } - case SQLITE_FCNTL_PERSIST_WAL: { - int bPersist = *(int*)pArg; - if( bPersist<0 ){ - *(int*)pArg = pFile->bPersistWal; - }else{ - pFile->bPersistWal = bPersist!=0; - } - return SQLITE_OK; - } - case SQLITE_FCNTL_SYNC_OMITTED: { - return SQLITE_OK; - } - case SQLITE_FCNTL_WIN32_AV_RETRY: { - int *a = (int*)pArg; - if( a[0]>0 ){ - win32IoerrRetry = a[0]; - }else{ - a[0] = win32IoerrRetry; - } - if( a[1]>0 ){ - win32IoerrRetryDelay = a[1]; - }else{ - a[1] = win32IoerrRetryDelay; - } - return SQLITE_OK; - } - } - return SQLITE_NOTFOUND; -} - -/* -** Return the sector size in bytes of the underlying block device for -** the specified file. This is almost always 512 bytes, but may be -** larger for some devices. -** -** SQLite code assumes this function cannot fail. It also assumes that -** if two files are created in the same file-system directory (i.e. -** a database and its journal file) that the sector size will be the -** same for both. -*/ -static int winSectorSize(sqlite3_file *id){ - assert( id!=0 ); - return (int)(((winFile*)id)->sectorSize); -} - -/* -** Return a vector of device characteristics. -*/ -static int winDeviceCharacteristics(sqlite3_file *id){ - UNUSED_PARAMETER(id); - return SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN; -} - -#ifndef SQLITE_OMIT_WAL - -/* -** Windows will only let you create file view mappings -** on allocation size granularity boundaries. -** During sqlite3_os_init() we do a GetSystemInfo() -** to get the granularity size. -*/ -SYSTEM_INFO winSysInfo; - -/* -** Helper functions to obtain and relinquish the global mutex. The -** global mutex is used to protect the winLockInfo objects used by -** this file, all of which may be shared by multiple threads. -** -** Function winShmMutexHeld() is used to assert() that the global mutex -** is held when required. This function is only used as part of assert() -** statements. e.g. -** -** winShmEnterMutex() -** assert( winShmMutexHeld() ); -** winShmLeaveMutex() -*/ -static void winShmEnterMutex(void){ - sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)); -} -static void winShmLeaveMutex(void){ - sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)); -} -#ifdef SQLITE_DEBUG -static int winShmMutexHeld(void) { - return sqlite3_mutex_held(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)); -} -#endif - -/* -** Object used to represent a single file opened and mmapped to provide -** shared memory. When multiple threads all reference the same -** log-summary, each thread has its own winFile object, but they all -** point to a single instance of this object. In other words, each -** log-summary is opened only once per process. -** -** winShmMutexHeld() must be true when creating or destroying -** this object or while reading or writing the following fields: -** -** nRef -** pNext -** -** The following fields are read-only after the object is created: -** -** fid -** zFilename -** -** Either winShmNode.mutex must be held or winShmNode.nRef==0 and -** winShmMutexHeld() is true when reading or writing any other field -** in this structure. -** -*/ -struct winShmNode { - sqlite3_mutex *mutex; /* Mutex to access this object */ - char *zFilename; /* Name of the file */ - winFile hFile; /* File handle from winOpen */ - - int szRegion; /* Size of shared-memory regions */ - int nRegion; /* Size of array apRegion */ - struct ShmRegion { - HANDLE hMap; /* File handle from CreateFileMapping */ - void *pMap; - } *aRegion; - DWORD lastErrno; /* The Windows errno from the last I/O error */ - - int nRef; /* Number of winShm objects pointing to this */ - winShm *pFirst; /* All winShm objects pointing to this */ - winShmNode *pNext; /* Next in list of all winShmNode objects */ -#ifdef SQLITE_DEBUG - u8 nextShmId; /* Next available winShm.id value */ -#endif -}; - -/* -** A global array of all winShmNode objects. -** -** The winShmMutexHeld() must be true while reading or writing this list. -*/ -static winShmNode *winShmNodeList = 0; - -/* -** Structure used internally by this VFS to record the state of an -** open shared memory connection. -** -** The following fields are initialized when this object is created and -** are read-only thereafter: -** -** winShm.pShmNode -** winShm.id -** -** All other fields are read/write. The winShm.pShmNode->mutex must be held -** while accessing any read/write fields. -*/ -struct winShm { - winShmNode *pShmNode; /* The underlying winShmNode object */ - winShm *pNext; /* Next winShm with the same winShmNode */ - u8 hasMutex; /* True if holding the winShmNode mutex */ - u16 sharedMask; /* Mask of shared locks held */ - u16 exclMask; /* Mask of exclusive locks held */ -#ifdef SQLITE_DEBUG - u8 id; /* Id of this connection with its winShmNode */ -#endif -}; - -/* -** Constants used for locking -*/ -#define WIN_SHM_BASE ((22+SQLITE_SHM_NLOCK)*4) /* first lock byte */ -#define WIN_SHM_DMS (WIN_SHM_BASE+SQLITE_SHM_NLOCK) /* deadman switch */ - -/* -** Apply advisory locks for all n bytes beginning at ofst. -*/ -#define _SHM_UNLCK 1 -#define _SHM_RDLCK 2 -#define _SHM_WRLCK 3 -static int winShmSystemLock( - winShmNode *pFile, /* Apply locks to this open shared-memory segment */ - int lockType, /* _SHM_UNLCK, _SHM_RDLCK, or _SHM_WRLCK */ - int ofst, /* Offset to first byte to be locked/unlocked */ - int nByte /* Number of bytes to lock or unlock */ -){ - OVERLAPPED ovlp; - DWORD dwFlags; - int rc = 0; /* Result code form Lock/UnlockFileEx() */ - - /* Access to the winShmNode object is serialized by the caller */ - assert( sqlite3_mutex_held(pFile->mutex) || pFile->nRef==0 ); - - /* Initialize the locking parameters */ - dwFlags = LOCKFILE_FAIL_IMMEDIATELY; - if( lockType == _SHM_WRLCK ) dwFlags |= LOCKFILE_EXCLUSIVE_LOCK; - - memset(&ovlp, 0, sizeof(OVERLAPPED)); - ovlp.Offset = ofst; - - /* Release/Acquire the system-level lock */ - if( lockType==_SHM_UNLCK ){ - rc = UnlockFileEx(pFile->hFile.h, 0, nByte, 0, &ovlp); - }else{ - rc = LockFileEx(pFile->hFile.h, dwFlags, 0, nByte, 0, &ovlp); - } - - if( rc!= 0 ){ - rc = SQLITE_OK; - }else{ - pFile->lastErrno = GetLastError(); - rc = SQLITE_BUSY; - } - - OSTRACE(("SHM-LOCK %d %s %s 0x%08lx\n", - pFile->hFile.h, - rc==SQLITE_OK ? "ok" : "failed", - lockType==_SHM_UNLCK ? "UnlockFileEx" : "LockFileEx", - pFile->lastErrno)); - - return rc; -} - -/* Forward references to VFS methods */ -static int winOpen(sqlite3_vfs*,const char*,sqlite3_file*,int,int*); -static int winDelete(sqlite3_vfs *,const char*,int); - -/* -** Purge the winShmNodeList list of all entries with winShmNode.nRef==0. -** -** This is not a VFS shared-memory method; it is a utility function called -** by VFS shared-memory methods. -*/ -static void winShmPurge(sqlite3_vfs *pVfs, int deleteFlag){ - winShmNode **pp; - winShmNode *p; - BOOL bRc; - assert( winShmMutexHeld() ); - pp = &winShmNodeList; - while( (p = *pp)!=0 ){ - if( p->nRef==0 ){ - int i; - if( p->mutex ) sqlite3_mutex_free(p->mutex); - for(i=0; inRegion; i++){ - bRc = UnmapViewOfFile(p->aRegion[i].pMap); - OSTRACE(("SHM-PURGE pid-%d unmap region=%d %s\n", - (int)GetCurrentProcessId(), i, - bRc ? "ok" : "failed")); - bRc = CloseHandle(p->aRegion[i].hMap); - OSTRACE(("SHM-PURGE pid-%d close region=%d %s\n", - (int)GetCurrentProcessId(), i, - bRc ? "ok" : "failed")); - } - if( p->hFile.h != INVALID_HANDLE_VALUE ){ - SimulateIOErrorBenign(1); - winClose((sqlite3_file *)&p->hFile); - SimulateIOErrorBenign(0); - } - if( deleteFlag ){ - SimulateIOErrorBenign(1); - winDelete(pVfs, p->zFilename, 0); - SimulateIOErrorBenign(0); - } - *pp = p->pNext; - sqlite3_free(p->aRegion); - sqlite3_free(p); - }else{ - pp = &p->pNext; - } - } -} - -/* -** Open the shared-memory area associated with database file pDbFd. -** -** When opening a new shared-memory file, if no other instances of that -** file are currently open, in this process or in other processes, then -** the file must be truncated to zero length or have its header cleared. -*/ -static int winOpenSharedMemory(winFile *pDbFd){ - struct winShm *p; /* The connection to be opened */ - struct winShmNode *pShmNode = 0; /* The underlying mmapped file */ - int rc; /* Result code */ - struct winShmNode *pNew; /* Newly allocated winShmNode */ - int nName; /* Size of zName in bytes */ - - assert( pDbFd->pShm==0 ); /* Not previously opened */ - - /* Allocate space for the new sqlite3_shm object. Also speculatively - ** allocate space for a new winShmNode and filename. - */ - p = sqlite3_malloc( sizeof(*p) ); - if( p==0 ) return SQLITE_NOMEM; - memset(p, 0, sizeof(*p)); - nName = sqlite3Strlen30(pDbFd->zPath); - pNew = sqlite3_malloc( sizeof(*pShmNode) + nName + 15 ); - if( pNew==0 ){ - sqlite3_free(p); - return SQLITE_NOMEM; - } - memset(pNew, 0, sizeof(*pNew)); - pNew->zFilename = (char*)&pNew[1]; - sqlite3_snprintf(nName+15, pNew->zFilename, "%s-shm", pDbFd->zPath); - sqlite3FileSuffix3(pDbFd->zPath, pNew->zFilename); - - /* Look to see if there is an existing winShmNode that can be used. - ** If no matching winShmNode currently exists, create a new one. - */ - winShmEnterMutex(); - for(pShmNode = winShmNodeList; pShmNode; pShmNode=pShmNode->pNext){ - /* TBD need to come up with better match here. Perhaps - ** use FILE_ID_BOTH_DIR_INFO Structure. - */ - if( sqlite3StrICmp(pShmNode->zFilename, pNew->zFilename)==0 ) break; - } - if( pShmNode ){ - sqlite3_free(pNew); - }else{ - pShmNode = pNew; - pNew = 0; - ((winFile*)(&pShmNode->hFile))->h = INVALID_HANDLE_VALUE; - pShmNode->pNext = winShmNodeList; - winShmNodeList = pShmNode; - - pShmNode->mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_FAST); - if( pShmNode->mutex==0 ){ - rc = SQLITE_NOMEM; - goto shm_open_err; - } - - rc = winOpen(pDbFd->pVfs, - pShmNode->zFilename, /* Name of the file (UTF-8) */ - (sqlite3_file*)&pShmNode->hFile, /* File handle here */ - SQLITE_OPEN_WAL | SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, /* Mode flags */ - 0); - if( SQLITE_OK!=rc ){ - rc = SQLITE_CANTOPEN_BKPT; - goto shm_open_err; - } - - /* Check to see if another process is holding the dead-man switch. - ** If not, truncate the file to zero length. - */ - if( winShmSystemLock(pShmNode, _SHM_WRLCK, WIN_SHM_DMS, 1)==SQLITE_OK ){ - rc = winTruncate((sqlite3_file *)&pShmNode->hFile, 0); - if( rc!=SQLITE_OK ){ - rc = winLogError(SQLITE_IOERR_SHMOPEN, "winOpenShm", pDbFd->zPath); - } - } - if( rc==SQLITE_OK ){ - winShmSystemLock(pShmNode, _SHM_UNLCK, WIN_SHM_DMS, 1); - rc = winShmSystemLock(pShmNode, _SHM_RDLCK, WIN_SHM_DMS, 1); - } - if( rc ) goto shm_open_err; - } - - /* Make the new connection a child of the winShmNode */ - p->pShmNode = pShmNode; -#ifdef SQLITE_DEBUG - p->id = pShmNode->nextShmId++; -#endif - pShmNode->nRef++; - pDbFd->pShm = p; - winShmLeaveMutex(); - - /* The reference count on pShmNode has already been incremented under - ** the cover of the winShmEnterMutex() mutex and the pointer from the - ** new (struct winShm) object to the pShmNode has been set. All that is - ** left to do is to link the new object into the linked list starting - ** at pShmNode->pFirst. This must be done while holding the pShmNode->mutex - ** mutex. - */ - sqlite3_mutex_enter(pShmNode->mutex); - p->pNext = pShmNode->pFirst; - pShmNode->pFirst = p; - sqlite3_mutex_leave(pShmNode->mutex); - return SQLITE_OK; - - /* Jump here on any error */ -shm_open_err: - winShmSystemLock(pShmNode, _SHM_UNLCK, WIN_SHM_DMS, 1); - winShmPurge(pDbFd->pVfs, 0); /* This call frees pShmNode if required */ - sqlite3_free(p); - sqlite3_free(pNew); - winShmLeaveMutex(); - return rc; -} - -/* -** Close a connection to shared-memory. Delete the underlying -** storage if deleteFlag is true. -*/ -static int winShmUnmap( - sqlite3_file *fd, /* Database holding shared memory */ - int deleteFlag /* Delete after closing if true */ -){ - winFile *pDbFd; /* Database holding shared-memory */ - winShm *p; /* The connection to be closed */ - winShmNode *pShmNode; /* The underlying shared-memory file */ - winShm **pp; /* For looping over sibling connections */ - - pDbFd = (winFile*)fd; - p = pDbFd->pShm; - if( p==0 ) return SQLITE_OK; - pShmNode = p->pShmNode; - - /* Remove connection p from the set of connections associated - ** with pShmNode */ - sqlite3_mutex_enter(pShmNode->mutex); - for(pp=&pShmNode->pFirst; (*pp)!=p; pp = &(*pp)->pNext){} - *pp = p->pNext; - - /* Free the connection p */ - sqlite3_free(p); - pDbFd->pShm = 0; - sqlite3_mutex_leave(pShmNode->mutex); - - /* If pShmNode->nRef has reached 0, then close the underlying - ** shared-memory file, too */ - winShmEnterMutex(); - assert( pShmNode->nRef>0 ); - pShmNode->nRef--; - if( pShmNode->nRef==0 ){ - winShmPurge(pDbFd->pVfs, deleteFlag); - } - winShmLeaveMutex(); - - return SQLITE_OK; -} - -/* -** Change the lock state for a shared-memory segment. -*/ -static int winShmLock( - sqlite3_file *fd, /* Database file holding the shared memory */ - int ofst, /* First lock to acquire or release */ - int n, /* Number of locks to acquire or release */ - int flags /* What to do with the lock */ -){ - winFile *pDbFd = (winFile*)fd; /* Connection holding shared memory */ - winShm *p = pDbFd->pShm; /* The shared memory being locked */ - winShm *pX; /* For looping over all siblings */ - winShmNode *pShmNode = p->pShmNode; - int rc = SQLITE_OK; /* Result code */ - u16 mask; /* Mask of locks to take or release */ - - assert( ofst>=0 && ofst+n<=SQLITE_SHM_NLOCK ); - assert( n>=1 ); - assert( flags==(SQLITE_SHM_LOCK | SQLITE_SHM_SHARED) - || flags==(SQLITE_SHM_LOCK | SQLITE_SHM_EXCLUSIVE) - || flags==(SQLITE_SHM_UNLOCK | SQLITE_SHM_SHARED) - || flags==(SQLITE_SHM_UNLOCK | SQLITE_SHM_EXCLUSIVE) ); - assert( n==1 || (flags & SQLITE_SHM_EXCLUSIVE)!=0 ); - - mask = (u16)((1U<<(ofst+n)) - (1U<1 || mask==(1<mutex); - if( flags & SQLITE_SHM_UNLOCK ){ - u16 allMask = 0; /* Mask of locks held by siblings */ - - /* See if any siblings hold this same lock */ - for(pX=pShmNode->pFirst; pX; pX=pX->pNext){ - if( pX==p ) continue; - assert( (pX->exclMask & (p->exclMask|p->sharedMask))==0 ); - allMask |= pX->sharedMask; - } - - /* Unlock the system-level locks */ - if( (mask & allMask)==0 ){ - rc = winShmSystemLock(pShmNode, _SHM_UNLCK, ofst+WIN_SHM_BASE, n); - }else{ - rc = SQLITE_OK; - } - - /* Undo the local locks */ - if( rc==SQLITE_OK ){ - p->exclMask &= ~mask; - p->sharedMask &= ~mask; - } - }else if( flags & SQLITE_SHM_SHARED ){ - u16 allShared = 0; /* Union of locks held by connections other than "p" */ - - /* Find out which shared locks are already held by sibling connections. - ** If any sibling already holds an exclusive lock, go ahead and return - ** SQLITE_BUSY. - */ - for(pX=pShmNode->pFirst; pX; pX=pX->pNext){ - if( (pX->exclMask & mask)!=0 ){ - rc = SQLITE_BUSY; - break; - } - allShared |= pX->sharedMask; - } - - /* Get shared locks at the system level, if necessary */ - if( rc==SQLITE_OK ){ - if( (allShared & mask)==0 ){ - rc = winShmSystemLock(pShmNode, _SHM_RDLCK, ofst+WIN_SHM_BASE, n); - }else{ - rc = SQLITE_OK; - } - } - - /* Get the local shared locks */ - if( rc==SQLITE_OK ){ - p->sharedMask |= mask; - } - }else{ - /* Make sure no sibling connections hold locks that will block this - ** lock. If any do, return SQLITE_BUSY right away. - */ - for(pX=pShmNode->pFirst; pX; pX=pX->pNext){ - if( (pX->exclMask & mask)!=0 || (pX->sharedMask & mask)!=0 ){ - rc = SQLITE_BUSY; - break; - } - } - - /* Get the exclusive locks at the system level. Then if successful - ** also mark the local connection as being locked. - */ - if( rc==SQLITE_OK ){ - rc = winShmSystemLock(pShmNode, _SHM_WRLCK, ofst+WIN_SHM_BASE, n); - if( rc==SQLITE_OK ){ - assert( (p->sharedMask & mask)==0 ); - p->exclMask |= mask; - } - } - } - sqlite3_mutex_leave(pShmNode->mutex); - OSTRACE(("SHM-LOCK shmid-%d, pid-%d got %03x,%03x %s\n", - p->id, (int)GetCurrentProcessId(), p->sharedMask, p->exclMask, - rc ? "failed" : "ok")); - return rc; -} - -/* -** Implement a memory barrier or memory fence on shared memory. -** -** All loads and stores begun before the barrier must complete before -** any load or store begun after the barrier. -*/ -static void winShmBarrier( - sqlite3_file *fd /* Database holding the shared memory */ -){ - UNUSED_PARAMETER(fd); - /* MemoryBarrier(); // does not work -- do not know why not */ - winShmEnterMutex(); - winShmLeaveMutex(); -} - -/* -** This function is called to obtain a pointer to region iRegion of the -** shared-memory associated with the database file fd. Shared-memory regions -** are numbered starting from zero. Each shared-memory region is szRegion -** bytes in size. -** -** If an error occurs, an error code is returned and *pp is set to NULL. -** -** Otherwise, if the isWrite parameter is 0 and the requested shared-memory -** region has not been allocated (by any client, including one running in a -** separate process), then *pp is set to NULL and SQLITE_OK returned. If -** isWrite is non-zero and the requested shared-memory region has not yet -** been allocated, it is allocated by this function. -** -** If the shared-memory region has already been allocated or is allocated by -** this call as described above, then it is mapped into this processes -** address space (if it is not already), *pp is set to point to the mapped -** memory and SQLITE_OK returned. -*/ -static int winShmMap( - sqlite3_file *fd, /* Handle open on database file */ - int iRegion, /* Region to retrieve */ - int szRegion, /* Size of regions */ - int isWrite, /* True to extend file if necessary */ - void volatile **pp /* OUT: Mapped memory */ -){ - winFile *pDbFd = (winFile*)fd; - winShm *p = pDbFd->pShm; - winShmNode *pShmNode; - int rc = SQLITE_OK; - - if( !p ){ - rc = winOpenSharedMemory(pDbFd); - if( rc!=SQLITE_OK ) return rc; - p = pDbFd->pShm; - } - pShmNode = p->pShmNode; - - sqlite3_mutex_enter(pShmNode->mutex); - assert( szRegion==pShmNode->szRegion || pShmNode->nRegion==0 ); - - if( pShmNode->nRegion<=iRegion ){ - struct ShmRegion *apNew; /* New aRegion[] array */ - int nByte = (iRegion+1)*szRegion; /* Minimum required file size */ - sqlite3_int64 sz; /* Current size of wal-index file */ - - pShmNode->szRegion = szRegion; - - /* The requested region is not mapped into this processes address space. - ** Check to see if it has been allocated (i.e. if the wal-index file is - ** large enough to contain the requested region). - */ - rc = winFileSize((sqlite3_file *)&pShmNode->hFile, &sz); - if( rc!=SQLITE_OK ){ - rc = winLogError(SQLITE_IOERR_SHMSIZE, "winShmMap1", pDbFd->zPath); - goto shmpage_out; - } - - if( szhFile, nByte); - if( rc!=SQLITE_OK ){ - rc = winLogError(SQLITE_IOERR_SHMSIZE, "winShmMap2", pDbFd->zPath); - goto shmpage_out; - } - } - - /* Map the requested memory region into this processes address space. */ - apNew = (struct ShmRegion *)sqlite3_realloc( - pShmNode->aRegion, (iRegion+1)*sizeof(apNew[0]) - ); - if( !apNew ){ - rc = SQLITE_IOERR_NOMEM; - goto shmpage_out; - } - pShmNode->aRegion = apNew; - - while( pShmNode->nRegion<=iRegion ){ - HANDLE hMap; /* file-mapping handle */ - void *pMap = 0; /* Mapped memory region */ - - hMap = CreateFileMapping(pShmNode->hFile.h, - NULL, PAGE_READWRITE, 0, nByte, NULL - ); - OSTRACE(("SHM-MAP pid-%d create region=%d nbyte=%d %s\n", - (int)GetCurrentProcessId(), pShmNode->nRegion, nByte, - hMap ? "ok" : "failed")); - if( hMap ){ - int iOffset = pShmNode->nRegion*szRegion; - int iOffsetShift = iOffset % winSysInfo.dwAllocationGranularity; - pMap = MapViewOfFile(hMap, FILE_MAP_WRITE | FILE_MAP_READ, - 0, iOffset - iOffsetShift, szRegion + iOffsetShift - ); - OSTRACE(("SHM-MAP pid-%d map region=%d offset=%d size=%d %s\n", - (int)GetCurrentProcessId(), pShmNode->nRegion, iOffset, szRegion, - pMap ? "ok" : "failed")); - } - if( !pMap ){ - pShmNode->lastErrno = GetLastError(); - rc = winLogError(SQLITE_IOERR_SHMMAP, "winShmMap3", pDbFd->zPath); - if( hMap ) CloseHandle(hMap); - goto shmpage_out; - } - - pShmNode->aRegion[pShmNode->nRegion].pMap = pMap; - pShmNode->aRegion[pShmNode->nRegion].hMap = hMap; - pShmNode->nRegion++; - } - } - -shmpage_out: - if( pShmNode->nRegion>iRegion ){ - int iOffset = iRegion*szRegion; - int iOffsetShift = iOffset % winSysInfo.dwAllocationGranularity; - char *p = (char *)pShmNode->aRegion[iRegion].pMap; - *pp = (void *)&p[iOffsetShift]; - }else{ - *pp = 0; - } - sqlite3_mutex_leave(pShmNode->mutex); - return rc; -} - -#else -# define winShmMap 0 -# define winShmLock 0 -# define winShmBarrier 0 -# define winShmUnmap 0 -#endif /* #ifndef SQLITE_OMIT_WAL */ - -/* -** Here ends the implementation of all sqlite3_file methods. -** -********************** End sqlite3_file Methods ******************************* -******************************************************************************/ - -/* -** This vector defines all the methods that can operate on an -** sqlite3_file for win32. -*/ -static const sqlite3_io_methods winIoMethod = { - 2, /* iVersion */ - winClose, /* xClose */ - winRead, /* xRead */ - winWrite, /* xWrite */ - winTruncate, /* xTruncate */ - winSync, /* xSync */ - winFileSize, /* xFileSize */ - winLock, /* xLock */ - winUnlock, /* xUnlock */ - winCheckReservedLock, /* xCheckReservedLock */ - winFileControl, /* xFileControl */ - winSectorSize, /* xSectorSize */ - winDeviceCharacteristics, /* xDeviceCharacteristics */ - winShmMap, /* xShmMap */ - winShmLock, /* xShmLock */ - winShmBarrier, /* xShmBarrier */ - winShmUnmap /* xShmUnmap */ -}; - -/**************************************************************************** -**************************** sqlite3_vfs methods **************************** -** -** This division contains the implementation of methods on the -** sqlite3_vfs object. -*/ - -/* -** Convert a UTF-8 filename into whatever form the underlying -** operating system wants filenames in. Space to hold the result -** is obtained from malloc and must be freed by the calling -** function. -*/ -static void *convertUtf8Filename(const char *zFilename){ - void *zConverted = 0; - if( isNT() ){ - zConverted = utf8ToUnicode(zFilename); -/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed. -*/ -#if SQLITE_OS_WINCE==0 - }else{ - zConverted = sqlite3_win32_utf8_to_mbcs(zFilename); -#endif - } - /* caller will handle out of memory */ - return zConverted; -} - -/* -** Create a temporary file name in zBuf. zBuf must be big enough to -** hold at pVfs->mxPathname characters. -*/ -static int getTempname(int nBuf, char *zBuf){ - static char zChars[] = - "abcdefghijklmnopqrstuvwxyz" - "ABCDEFGHIJKLMNOPQRSTUVWXYZ" - "0123456789"; - size_t i, j; - char zTempPath[MAX_PATH+1]; - - /* It's odd to simulate an io-error here, but really this is just - ** using the io-error infrastructure to test that SQLite handles this - ** function failing. - */ - SimulateIOError( return SQLITE_IOERR ); - - if( sqlite3_temp_directory ){ - sqlite3_snprintf(MAX_PATH-30, zTempPath, "%s", sqlite3_temp_directory); - }else if( isNT() ){ - char *zMulti; - WCHAR zWidePath[MAX_PATH]; - GetTempPathW(MAX_PATH-30, zWidePath); - zMulti = unicodeToUtf8(zWidePath); - if( zMulti ){ - sqlite3_snprintf(MAX_PATH-30, zTempPath, "%s", zMulti); - free(zMulti); - }else{ - return SQLITE_NOMEM; - } -/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed. -** Since the ASCII version of these Windows API do not exist for WINCE, -** it's important to not reference them for WINCE builds. -*/ -#if SQLITE_OS_WINCE==0 - }else{ - char *zUtf8; - char zMbcsPath[MAX_PATH]; - GetTempPathA(MAX_PATH-30, zMbcsPath); - zUtf8 = sqlite3_win32_mbcs_to_utf8(zMbcsPath); - if( zUtf8 ){ - sqlite3_snprintf(MAX_PATH-30, zTempPath, "%s", zUtf8); - free(zUtf8); - }else{ - return SQLITE_NOMEM; - } -#endif - } - - /* Check that the output buffer is large enough for the temporary file - ** name. If it is not, return SQLITE_ERROR. - */ - if( (sqlite3Strlen30(zTempPath) + sqlite3Strlen30(SQLITE_TEMP_FILE_PREFIX) + 17) >= nBuf ){ - return SQLITE_ERROR; - } - - for(i=sqlite3Strlen30(zTempPath); i>0 && zTempPath[i-1]=='\\'; i--){} - zTempPath[i] = 0; - - sqlite3_snprintf(nBuf-17, zBuf, - "%s\\"SQLITE_TEMP_FILE_PREFIX, zTempPath); - j = sqlite3Strlen30(zBuf); - sqlite3_randomness(15, &zBuf[j]); - for(i=0; i<15; i++, j++){ - zBuf[j] = (char)zChars[ ((unsigned char)zBuf[j])%(sizeof(zChars)-1) ]; - } - zBuf[j] = 0; - - OSTRACE(("TEMP FILENAME: %s\n", zBuf)); - return SQLITE_OK; -} - -/* -** Open a file. -*/ -static int winOpen( - sqlite3_vfs *pVfs, /* Not used */ - const char *zName, /* Name of the file (UTF-8) */ - sqlite3_file *id, /* Write the SQLite file handle here */ - int flags, /* Open mode flags */ - int *pOutFlags /* Status return flags */ -){ - HANDLE h; - DWORD dwDesiredAccess; - DWORD dwShareMode; - DWORD dwCreationDisposition; - DWORD dwFlagsAndAttributes = 0; -#if SQLITE_OS_WINCE - int isTemp = 0; -#endif - winFile *pFile = (winFile*)id; - void *zConverted; /* Filename in OS encoding */ - const char *zUtf8Name = zName; /* Filename in UTF-8 encoding */ - int cnt = 0; - - /* If argument zPath is a NULL pointer, this function is required to open - ** a temporary file. Use this buffer to store the file name in. - */ - char zTmpname[MAX_PATH+1]; /* Buffer used to create temp filename */ - - int rc = SQLITE_OK; /* Function Return Code */ -#if !defined(NDEBUG) || SQLITE_OS_WINCE - int eType = flags&0xFFFFFF00; /* Type of file to open */ -#endif - - int isExclusive = (flags & SQLITE_OPEN_EXCLUSIVE); - int isDelete = (flags & SQLITE_OPEN_DELETEONCLOSE); - int isCreate = (flags & SQLITE_OPEN_CREATE); -#ifndef NDEBUG - int isReadonly = (flags & SQLITE_OPEN_READONLY); -#endif - int isReadWrite = (flags & SQLITE_OPEN_READWRITE); - -#ifndef NDEBUG - int isOpenJournal = (isCreate && ( - eType==SQLITE_OPEN_MASTER_JOURNAL - || eType==SQLITE_OPEN_MAIN_JOURNAL - || eType==SQLITE_OPEN_WAL - )); -#endif - - /* Check the following statements are true: - ** - ** (a) Exactly one of the READWRITE and READONLY flags must be set, and - ** (b) if CREATE is set, then READWRITE must also be set, and - ** (c) if EXCLUSIVE is set, then CREATE must also be set. - ** (d) if DELETEONCLOSE is set, then CREATE must also be set. - */ - assert((isReadonly==0 || isReadWrite==0) && (isReadWrite || isReadonly)); - assert(isCreate==0 || isReadWrite); - assert(isExclusive==0 || isCreate); - assert(isDelete==0 || isCreate); - - /* The main DB, main journal, WAL file and master journal are never - ** automatically deleted. Nor are they ever temporary files. */ - assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_DB ); - assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_JOURNAL ); - assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MASTER_JOURNAL ); - assert( (!isDelete && zName) || eType!=SQLITE_OPEN_WAL ); - - /* Assert that the upper layer has set one of the "file-type" flags. */ - assert( eType==SQLITE_OPEN_MAIN_DB || eType==SQLITE_OPEN_TEMP_DB - || eType==SQLITE_OPEN_MAIN_JOURNAL || eType==SQLITE_OPEN_TEMP_JOURNAL - || eType==SQLITE_OPEN_SUBJOURNAL || eType==SQLITE_OPEN_MASTER_JOURNAL - || eType==SQLITE_OPEN_TRANSIENT_DB || eType==SQLITE_OPEN_WAL - ); - - assert( id!=0 ); - UNUSED_PARAMETER(pVfs); - - pFile->h = INVALID_HANDLE_VALUE; - - /* If the second argument to this function is NULL, generate a - ** temporary file name to use - */ - if( !zUtf8Name ){ - assert(isDelete && !isOpenJournal); - rc = getTempname(MAX_PATH+1, zTmpname); - if( rc!=SQLITE_OK ){ - return rc; - } - zUtf8Name = zTmpname; - } - - /* Convert the filename to the system encoding. */ - zConverted = convertUtf8Filename(zUtf8Name); - if( zConverted==0 ){ - return SQLITE_NOMEM; - } - - if( isReadWrite ){ - dwDesiredAccess = GENERIC_READ | GENERIC_WRITE; - }else{ - dwDesiredAccess = GENERIC_READ; - } - - /* SQLITE_OPEN_EXCLUSIVE is used to make sure that a new file is - ** created. SQLite doesn't use it to indicate "exclusive access" - ** as it is usually understood. - */ - if( isExclusive ){ - /* Creates a new file, only if it does not already exist. */ - /* If the file exists, it fails. */ - dwCreationDisposition = CREATE_NEW; - }else if( isCreate ){ - /* Open existing file, or create if it doesn't exist */ - dwCreationDisposition = OPEN_ALWAYS; - }else{ - /* Opens a file, only if it exists. */ - dwCreationDisposition = OPEN_EXISTING; - } - - dwShareMode = FILE_SHARE_READ | FILE_SHARE_WRITE; - - if( isDelete ){ -#if SQLITE_OS_WINCE - dwFlagsAndAttributes = FILE_ATTRIBUTE_HIDDEN; - isTemp = 1; -#else - dwFlagsAndAttributes = FILE_ATTRIBUTE_TEMPORARY - | FILE_ATTRIBUTE_HIDDEN - | FILE_FLAG_DELETE_ON_CLOSE; -#endif - }else{ - dwFlagsAndAttributes = FILE_ATTRIBUTE_NORMAL; - } - /* Reports from the internet are that performance is always - ** better if FILE_FLAG_RANDOM_ACCESS is used. Ticket #2699. */ -#if SQLITE_OS_WINCE - dwFlagsAndAttributes |= FILE_FLAG_RANDOM_ACCESS; -#endif - - if( isNT() ){ - while( (h = CreateFileW((WCHAR*)zConverted, - dwDesiredAccess, - dwShareMode, NULL, - dwCreationDisposition, - dwFlagsAndAttributes, - NULL))==INVALID_HANDLE_VALUE && - retryIoerr(&cnt) ){} -/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed. -** Since the ASCII version of these Windows API do not exist for WINCE, -** it's important to not reference them for WINCE builds. -*/ -#if SQLITE_OS_WINCE==0 - }else{ - while( (h = CreateFileA((char*)zConverted, - dwDesiredAccess, - dwShareMode, NULL, - dwCreationDisposition, - dwFlagsAndAttributes, - NULL))==INVALID_HANDLE_VALUE && - retryIoerr(&cnt) ){} -#endif - } - - logIoerr(cnt); - - OSTRACE(("OPEN %d %s 0x%lx %s\n", - h, zName, dwDesiredAccess, - h==INVALID_HANDLE_VALUE ? "failed" : "ok")); - - if( h==INVALID_HANDLE_VALUE ){ - pFile->lastErrno = GetLastError(); - winLogError(SQLITE_CANTOPEN, "winOpen", zUtf8Name); - free(zConverted); - if( isReadWrite && !isExclusive ){ - return winOpen(pVfs, zName, id, - ((flags|SQLITE_OPEN_READONLY)&~(SQLITE_OPEN_CREATE|SQLITE_OPEN_READWRITE)), pOutFlags); - }else{ - return SQLITE_CANTOPEN_BKPT; - } - } - - if( pOutFlags ){ - if( isReadWrite ){ - *pOutFlags = SQLITE_OPEN_READWRITE; - }else{ - *pOutFlags = SQLITE_OPEN_READONLY; - } - } - - memset(pFile, 0, sizeof(*pFile)); - pFile->pMethod = &winIoMethod; - pFile->h = h; - pFile->lastErrno = NO_ERROR; - pFile->pVfs = pVfs; - pFile->pShm = 0; - pFile->zPath = zName; - pFile->sectorSize = getSectorSize(pVfs, zUtf8Name); - -#if SQLITE_OS_WINCE - if( isReadWrite && eType==SQLITE_OPEN_MAIN_DB - && !winceCreateLock(zName, pFile) - ){ - CloseHandle(h); - free(zConverted); - return SQLITE_CANTOPEN_BKPT; - } - if( isTemp ){ - pFile->zDeleteOnClose = zConverted; - }else -#endif - { - free(zConverted); - } - - OpenCounter(+1); - return rc; -} - -/* -** Delete the named file. -** -** Note that windows does not allow a file to be deleted if some other -** process has it open. Sometimes a virus scanner or indexing program -** will open a journal file shortly after it is created in order to do -** whatever it does. While this other process is holding the -** file open, we will be unable to delete it. To work around this -** problem, we delay 100 milliseconds and try to delete again. Up -** to MX_DELETION_ATTEMPTs deletion attempts are run before giving -** up and returning an error. -*/ -static int winDelete( - sqlite3_vfs *pVfs, /* Not used on win32 */ - const char *zFilename, /* Name of file to delete */ - int syncDir /* Not used on win32 */ -){ - int cnt = 0; - int rc; - void *zConverted; - UNUSED_PARAMETER(pVfs); - UNUSED_PARAMETER(syncDir); - - SimulateIOError(return SQLITE_IOERR_DELETE); - zConverted = convertUtf8Filename(zFilename); - if( zConverted==0 ){ - return SQLITE_NOMEM; - } - if( isNT() ){ - rc = 1; - while( GetFileAttributesW(zConverted)!=INVALID_FILE_ATTRIBUTES && - (rc = DeleteFileW(zConverted))==0 && retryIoerr(&cnt) ){} - rc = rc ? SQLITE_OK : SQLITE_ERROR; -/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed. -** Since the ASCII version of these Windows API do not exist for WINCE, -** it's important to not reference them for WINCE builds. -*/ -#if SQLITE_OS_WINCE==0 - }else{ - rc = 1; - while( GetFileAttributesA(zConverted)!=INVALID_FILE_ATTRIBUTES && - (rc = DeleteFileA(zConverted))==0 && retryIoerr(&cnt) ){} - rc = rc ? SQLITE_OK : SQLITE_ERROR; -#endif - } - if( rc ){ - rc = winLogError(SQLITE_IOERR_DELETE, "winDelete", zFilename); - }else{ - logIoerr(cnt); - } - free(zConverted); - OSTRACE(("DELETE \"%s\" %s\n", zFilename, (rc ? "failed" : "ok" ))); - return rc; -} - -/* -** Check the existance and status of a file. -*/ -static int winAccess( - sqlite3_vfs *pVfs, /* Not used on win32 */ - const char *zFilename, /* Name of file to check */ - int flags, /* Type of test to make on this file */ - int *pResOut /* OUT: Result */ -){ - DWORD attr; - int rc = 0; - void *zConverted; - UNUSED_PARAMETER(pVfs); - - SimulateIOError( return SQLITE_IOERR_ACCESS; ); - zConverted = convertUtf8Filename(zFilename); - if( zConverted==0 ){ - return SQLITE_NOMEM; - } - if( isNT() ){ - int cnt = 0; - WIN32_FILE_ATTRIBUTE_DATA sAttrData; - memset(&sAttrData, 0, sizeof(sAttrData)); - while( !(rc = GetFileAttributesExW((WCHAR*)zConverted, - GetFileExInfoStandard, - &sAttrData)) && retryIoerr(&cnt) ){} - if( rc ){ - /* For an SQLITE_ACCESS_EXISTS query, treat a zero-length file - ** as if it does not exist. - */ - if( flags==SQLITE_ACCESS_EXISTS - && sAttrData.nFileSizeHigh==0 - && sAttrData.nFileSizeLow==0 ){ - attr = INVALID_FILE_ATTRIBUTES; - }else{ - attr = sAttrData.dwFileAttributes; - } - }else{ - logIoerr(cnt); - if( GetLastError()!=ERROR_FILE_NOT_FOUND ){ - winLogError(SQLITE_IOERR_ACCESS, "winAccess", zFilename); - free(zConverted); - return SQLITE_IOERR_ACCESS; - }else{ - attr = INVALID_FILE_ATTRIBUTES; - } - } -/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed. -** Since the ASCII version of these Windows API do not exist for WINCE, -** it's important to not reference them for WINCE builds. -*/ -#if SQLITE_OS_WINCE==0 - }else{ - attr = GetFileAttributesA((char*)zConverted); -#endif - } - free(zConverted); - switch( flags ){ - case SQLITE_ACCESS_READ: - case SQLITE_ACCESS_EXISTS: - rc = attr!=INVALID_FILE_ATTRIBUTES; - break; - case SQLITE_ACCESS_READWRITE: - rc = attr!=INVALID_FILE_ATTRIBUTES && - (attr & FILE_ATTRIBUTE_READONLY)==0; - break; - default: - assert(!"Invalid flags argument"); - } - *pResOut = rc; - return SQLITE_OK; -} - - -/* -** Turn a relative pathname into a full pathname. Write the full -** pathname into zOut[]. zOut[] will be at least pVfs->mxPathname -** bytes in size. -*/ -static int winFullPathname( - sqlite3_vfs *pVfs, /* Pointer to vfs object */ - const char *zRelative, /* Possibly relative input path */ - int nFull, /* Size of output buffer in bytes */ - char *zFull /* Output buffer */ -){ - -#if defined(__CYGWIN__) - SimulateIOError( return SQLITE_ERROR ); - UNUSED_PARAMETER(nFull); - cygwin_conv_to_full_win32_path(zRelative, zFull); - return SQLITE_OK; -#endif - -#if SQLITE_OS_WINCE - SimulateIOError( return SQLITE_ERROR ); - UNUSED_PARAMETER(nFull); - /* WinCE has no concept of a relative pathname, or so I am told. */ - sqlite3_snprintf(pVfs->mxPathname, zFull, "%s", zRelative); - return SQLITE_OK; -#endif - -#if !SQLITE_OS_WINCE && !defined(__CYGWIN__) - int nByte; - void *zConverted; - char *zOut; - - /* If this path name begins with "/X:", where "X" is any alphabetic - ** character, discard the initial "/" from the pathname. - */ - if( zRelative[0]=='/' && sqlite3Isalpha(zRelative[1]) && zRelative[2]==':' ){ - zRelative++; - } - - /* It's odd to simulate an io-error here, but really this is just - ** using the io-error infrastructure to test that SQLite handles this - ** function failing. This function could fail if, for example, the - ** current working directory has been unlinked. - */ - SimulateIOError( return SQLITE_ERROR ); - UNUSED_PARAMETER(nFull); - zConverted = convertUtf8Filename(zRelative); - if( isNT() ){ - WCHAR *zTemp; - nByte = GetFullPathNameW((WCHAR*)zConverted, 0, 0, 0) + 3; - zTemp = malloc( nByte*sizeof(zTemp[0]) ); - if( zTemp==0 ){ - free(zConverted); - return SQLITE_NOMEM; - } - GetFullPathNameW((WCHAR*)zConverted, nByte, zTemp, 0); - free(zConverted); - zOut = unicodeToUtf8(zTemp); - free(zTemp); -/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed. -** Since the ASCII version of these Windows API do not exist for WINCE, -** it's important to not reference them for WINCE builds. -*/ -#if SQLITE_OS_WINCE==0 - }else{ - char *zTemp; - nByte = GetFullPathNameA((char*)zConverted, 0, 0, 0) + 3; - zTemp = malloc( nByte*sizeof(zTemp[0]) ); - if( zTemp==0 ){ - free(zConverted); - return SQLITE_NOMEM; - } - GetFullPathNameA((char*)zConverted, nByte, zTemp, 0); - free(zConverted); - zOut = sqlite3_win32_mbcs_to_utf8(zTemp); - free(zTemp); -#endif - } - if( zOut ){ - sqlite3_snprintf(pVfs->mxPathname, zFull, "%s", zOut); - free(zOut); - return SQLITE_OK; - }else{ - return SQLITE_NOMEM; - } -#endif -} - -/* -** Get the sector size of the device used to store -** file. -*/ -static int getSectorSize( - sqlite3_vfs *pVfs, - const char *zRelative /* UTF-8 file name */ -){ - DWORD bytesPerSector = SQLITE_DEFAULT_SECTOR_SIZE; - /* GetDiskFreeSpace is not supported under WINCE */ -#if SQLITE_OS_WINCE - UNUSED_PARAMETER(pVfs); - UNUSED_PARAMETER(zRelative); -#else - char zFullpath[MAX_PATH+1]; - int rc; - DWORD dwRet = 0; - DWORD dwDummy; - - /* - ** We need to get the full path name of the file - ** to get the drive letter to look up the sector - ** size. - */ - SimulateIOErrorBenign(1); - rc = winFullPathname(pVfs, zRelative, MAX_PATH, zFullpath); - SimulateIOErrorBenign(0); - if( rc == SQLITE_OK ) - { - void *zConverted = convertUtf8Filename(zFullpath); - if( zConverted ){ - if( isNT() ){ - /* trim path to just drive reference */ - WCHAR *p = zConverted; - for(;*p;p++){ - if( *p == '\\' ){ - *p = '\0'; - break; - } - } - dwRet = GetDiskFreeSpaceW((WCHAR*)zConverted, - &dwDummy, - &bytesPerSector, - &dwDummy, - &dwDummy); - }else{ - /* trim path to just drive reference */ - char *p = (char *)zConverted; - for(;*p;p++){ - if( *p == '\\' ){ - *p = '\0'; - break; - } - } - dwRet = GetDiskFreeSpaceA((char*)zConverted, - &dwDummy, - &bytesPerSector, - &dwDummy, - &dwDummy); - } - free(zConverted); - } - if( !dwRet ){ - bytesPerSector = SQLITE_DEFAULT_SECTOR_SIZE; - } - } -#endif - return (int) bytesPerSector; -} - -#ifndef SQLITE_OMIT_LOAD_EXTENSION -/* -** Interfaces for opening a shared library, finding entry points -** within the shared library, and closing the shared library. -*/ -/* -** Interfaces for opening a shared library, finding entry points -** within the shared library, and closing the shared library. -*/ -static void *winDlOpen(sqlite3_vfs *pVfs, const char *zFilename){ - HANDLE h; - void *zConverted = convertUtf8Filename(zFilename); - UNUSED_PARAMETER(pVfs); - if( zConverted==0 ){ - return 0; - } - if( isNT() ){ - h = LoadLibraryW((WCHAR*)zConverted); -/* isNT() is 1 if SQLITE_OS_WINCE==1, so this else is never executed. -** Since the ASCII version of these Windows API do not exist for WINCE, -** it's important to not reference them for WINCE builds. -*/ -#if SQLITE_OS_WINCE==0 - }else{ - h = LoadLibraryA((char*)zConverted); -#endif - } - free(zConverted); - return (void*)h; -} -static void winDlError(sqlite3_vfs *pVfs, int nBuf, char *zBufOut){ - UNUSED_PARAMETER(pVfs); - getLastErrorMsg(nBuf, zBufOut); -} -static void (*winDlSym(sqlite3_vfs *pVfs, void *pHandle, const char *zSymbol))(void){ - UNUSED_PARAMETER(pVfs); -#if SQLITE_OS_WINCE - /* The GetProcAddressA() routine is only available on wince. */ - return (void(*)(void))GetProcAddressA((HANDLE)pHandle, zSymbol); -#else - /* All other windows platforms expect GetProcAddress() to take - ** an Ansi string regardless of the _UNICODE setting */ - return (void(*)(void))GetProcAddress((HANDLE)pHandle, zSymbol); -#endif -} -static void winDlClose(sqlite3_vfs *pVfs, void *pHandle){ - UNUSED_PARAMETER(pVfs); - FreeLibrary((HANDLE)pHandle); -} -#else /* if SQLITE_OMIT_LOAD_EXTENSION is defined: */ - #define winDlOpen 0 - #define winDlError 0 - #define winDlSym 0 - #define winDlClose 0 -#endif - - -/* -** Write up to nBuf bytes of randomness into zBuf. -*/ -static int winRandomness(sqlite3_vfs *pVfs, int nBuf, char *zBuf){ - int n = 0; - UNUSED_PARAMETER(pVfs); -#if defined(SQLITE_TEST) - n = nBuf; - memset(zBuf, 0, nBuf); -#else - if( sizeof(SYSTEMTIME)<=nBuf-n ){ - SYSTEMTIME x; - GetSystemTime(&x); - memcpy(&zBuf[n], &x, sizeof(x)); - n += sizeof(x); - } - if( sizeof(DWORD)<=nBuf-n ){ - DWORD pid = GetCurrentProcessId(); - memcpy(&zBuf[n], &pid, sizeof(pid)); - n += sizeof(pid); - } - if( sizeof(DWORD)<=nBuf-n ){ - DWORD cnt = GetTickCount(); - memcpy(&zBuf[n], &cnt, sizeof(cnt)); - n += sizeof(cnt); - } - if( sizeof(LARGE_INTEGER)<=nBuf-n ){ - LARGE_INTEGER i; - QueryPerformanceCounter(&i); - memcpy(&zBuf[n], &i, sizeof(i)); - n += sizeof(i); - } -#endif - return n; -} - - -/* -** Sleep for a little while. Return the amount of time slept. -*/ -static int winSleep(sqlite3_vfs *pVfs, int microsec){ - Sleep((microsec+999)/1000); - UNUSED_PARAMETER(pVfs); - return ((microsec+999)/1000)*1000; -} - -/* -** The following variable, if set to a non-zero value, is interpreted as -** the number of seconds since 1970 and is used to set the result of -** sqlite3OsCurrentTime() during testing. -*/ -#ifdef SQLITE_TEST -int sqlite3_current_time = 0; /* Fake system time in seconds since 1970. */ -#endif - -/* -** Find the current time (in Universal Coordinated Time). Write into *piNow -** the current time and date as a Julian Day number times 86_400_000. In -** other words, write into *piNow the number of milliseconds since the Julian -** epoch of noon in Greenwich on November 24, 4714 B.C according to the -** proleptic Gregorian calendar. -** -** On success, return SQLITE_OK. Return SQLITE_ERROR if the time and date -** cannot be found. -*/ -static int winCurrentTimeInt64(sqlite3_vfs *pVfs, sqlite3_int64 *piNow){ - /* FILETIME structure is a 64-bit value representing the number of - 100-nanosecond intervals since January 1, 1601 (= JD 2305813.5). - */ - FILETIME ft; - static const sqlite3_int64 winFiletimeEpoch = 23058135*(sqlite3_int64)8640000; -#ifdef SQLITE_TEST - static const sqlite3_int64 unixEpoch = 24405875*(sqlite3_int64)8640000; -#endif - /* 2^32 - to avoid use of LL and warnings in gcc */ - static const sqlite3_int64 max32BitValue = - (sqlite3_int64)2000000000 + (sqlite3_int64)2000000000 + (sqlite3_int64)294967296; - -#if SQLITE_OS_WINCE - SYSTEMTIME time; - GetSystemTime(&time); - /* if SystemTimeToFileTime() fails, it returns zero. */ - if (!SystemTimeToFileTime(&time,&ft)){ - return SQLITE_ERROR; - } -#else - GetSystemTimeAsFileTime( &ft ); -#endif - - *piNow = winFiletimeEpoch + - ((((sqlite3_int64)ft.dwHighDateTime)*max32BitValue) + - (sqlite3_int64)ft.dwLowDateTime)/(sqlite3_int64)10000; - -#ifdef SQLITE_TEST - if( sqlite3_current_time ){ - *piNow = 1000*(sqlite3_int64)sqlite3_current_time + unixEpoch; - } -#endif - UNUSED_PARAMETER(pVfs); - return SQLITE_OK; -} - -/* -** Find the current time (in Universal Coordinated Time). Write the -** current time and date as a Julian Day number into *prNow and -** return 0. Return 1 if the time and date cannot be found. -*/ -static int winCurrentTime(sqlite3_vfs *pVfs, double *prNow){ - int rc; - sqlite3_int64 i; - rc = winCurrentTimeInt64(pVfs, &i); - if( !rc ){ - *prNow = i/86400000.0; - } - return rc; -} - -/* -** The idea is that this function works like a combination of -** GetLastError() and FormatMessage() on windows (or errno and -** strerror_r() on unix). After an error is returned by an OS -** function, SQLite calls this function with zBuf pointing to -** a buffer of nBuf bytes. The OS layer should populate the -** buffer with a nul-terminated UTF-8 encoded error message -** describing the last IO error to have occurred within the calling -** thread. -** -** If the error message is too large for the supplied buffer, -** it should be truncated. The return value of xGetLastError -** is zero if the error message fits in the buffer, or non-zero -** otherwise (if the message was truncated). If non-zero is returned, -** then it is not necessary to include the nul-terminator character -** in the output buffer. -** -** Not supplying an error message will have no adverse effect -** on SQLite. It is fine to have an implementation that never -** returns an error message: -** -** int xGetLastError(sqlite3_vfs *pVfs, int nBuf, char *zBuf){ -** assert(zBuf[0]=='\0'); -** return 0; -** } -** -** However if an error message is supplied, it will be incorporated -** by sqlite into the error message available to the user using -** sqlite3_errmsg(), possibly making IO errors easier to debug. -*/ -static int winGetLastError(sqlite3_vfs *pVfs, int nBuf, char *zBuf){ - UNUSED_PARAMETER(pVfs); - return getLastErrorMsg(nBuf, zBuf); -} - - - -/* -** Initialize and deinitialize the operating system interface. -*/ -int sqlite3_os_init(void){ - static sqlite3_vfs winVfs = { - 3, /* iVersion */ - sizeof(winFile), /* szOsFile */ - MAX_PATH, /* mxPathname */ - 0, /* pNext */ - "win32", /* zName */ - 0, /* pAppData */ - winOpen, /* xOpen */ - winDelete, /* xDelete */ - winAccess, /* xAccess */ - winFullPathname, /* xFullPathname */ - winDlOpen, /* xDlOpen */ - winDlError, /* xDlError */ - winDlSym, /* xDlSym */ - winDlClose, /* xDlClose */ - winRandomness, /* xRandomness */ - winSleep, /* xSleep */ - winCurrentTime, /* xCurrentTime */ - winGetLastError, /* xGetLastError */ - winCurrentTimeInt64, /* xCurrentTimeInt64 */ - 0, /* xSetSystemCall */ - 0, /* xGetSystemCall */ - 0, /* xNextSystemCall */ - }; - -#ifndef SQLITE_OMIT_WAL - /* get memory map allocation granularity */ - memset(&winSysInfo, 0, sizeof(SYSTEM_INFO)); - GetSystemInfo(&winSysInfo); - assert(winSysInfo.dwAllocationGranularity > 0); -#endif - - sqlite3_vfs_register(&winVfs, 1); - return SQLITE_OK; -} -int sqlite3_os_end(void){ - return SQLITE_OK; -} - -#endif /* SQLITE_OS_WIN */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/pager.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/pager.c deleted file mode 100644 index 29d4e41448..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/pager.c +++ /dev/null @@ -1,6863 +0,0 @@ -/* -** 2001 September 15 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This is the implementation of the page cache subsystem or "pager". -** -** The pager is used to access a database disk file. It implements -** atomic commit and rollback through the use of a journal file that -** is separate from the database file. The pager also implements file -** locking to prevent two processes from writing the same database -** file simultaneously, or one process from reading the database while -** another is writing. -*/ -#ifndef SQLITE_OMIT_DISKIO -#include "sqliteInt.h" -#include "wal.h" - - -/******************* NOTES ON THE DESIGN OF THE PAGER ************************ -** -** This comment block describes invariants that hold when using a rollback -** journal. These invariants do not apply for journal_mode=WAL, -** journal_mode=MEMORY, or journal_mode=OFF. -** -** Within this comment block, a page is deemed to have been synced -** automatically as soon as it is written when PRAGMA synchronous=OFF. -** Otherwise, the page is not synced until the xSync method of the VFS -** is called successfully on the file containing the page. -** -** Definition: A page of the database file is said to be "overwriteable" if -** one or more of the following are true about the page: -** -** (a) The original content of the page as it was at the beginning of -** the transaction has been written into the rollback journal and -** synced. -** -** (b) The page was a freelist leaf page at the start of the transaction. -** -** (c) The page number is greater than the largest page that existed in -** the database file at the start of the transaction. -** -** (1) A page of the database file is never overwritten unless one of the -** following are true: -** -** (a) The page and all other pages on the same sector are overwriteable. -** -** (b) The atomic page write optimization is enabled, and the entire -** transaction other than the update of the transaction sequence -** number consists of a single page change. -** -** (2) The content of a page written into the rollback journal exactly matches -** both the content in the database when the rollback journal was written -** and the content in the database at the beginning of the current -** transaction. -** -** (3) Writes to the database file are an integer multiple of the page size -** in length and are aligned on a page boundary. -** -** (4) Reads from the database file are either aligned on a page boundary and -** an integer multiple of the page size in length or are taken from the -** first 100 bytes of the database file. -** -** (5) All writes to the database file are synced prior to the rollback journal -** being deleted, truncated, or zeroed. -** -** (6) If a master journal file is used, then all writes to the database file -** are synced prior to the master journal being deleted. -** -** Definition: Two databases (or the same database at two points it time) -** are said to be "logically equivalent" if they give the same answer to -** all queries. Note in particular the the content of freelist leaf -** pages can be changed arbitarily without effecting the logical equivalence -** of the database. -** -** (7) At any time, if any subset, including the empty set and the total set, -** of the unsynced changes to a rollback journal are removed and the -** journal is rolled back, the resulting database file will be logical -** equivalent to the database file at the beginning of the transaction. -** -** (8) When a transaction is rolled back, the xTruncate method of the VFS -** is called to restore the database file to the same size it was at -** the beginning of the transaction. (In some VFSes, the xTruncate -** method is a no-op, but that does not change the fact the SQLite will -** invoke it.) -** -** (9) Whenever the database file is modified, at least one bit in the range -** of bytes from 24 through 39 inclusive will be changed prior to releasing -** the EXCLUSIVE lock, thus signaling other connections on the same -** database to flush their caches. -** -** (10) The pattern of bits in bytes 24 through 39 shall not repeat in less -** than one billion transactions. -** -** (11) A database file is well-formed at the beginning and at the conclusion -** of every transaction. -** -** (12) An EXCLUSIVE lock is held on the database file when writing to -** the database file. -** -** (13) A SHARED lock is held on the database file while reading any -** content out of the database file. -** -******************************************************************************/ - -/* -** Macros for troubleshooting. Normally turned off -*/ -#if 0 -int sqlite3PagerTrace=1; /* True to enable tracing */ -#define sqlite3DebugPrintf printf -#define PAGERTRACE(X) if( sqlite3PagerTrace ){ sqlite3DebugPrintf X; } -#else -#define PAGERTRACE(X) -#endif - -/* -** The following two macros are used within the PAGERTRACE() macros above -** to print out file-descriptors. -** -** PAGERID() takes a pointer to a Pager struct as its argument. The -** associated file-descriptor is returned. FILEHANDLEID() takes an sqlite3_file -** struct as its argument. -*/ -#define PAGERID(p) ((int)(p->fd)) -#define FILEHANDLEID(fd) ((int)fd) - -/* -** The Pager.eState variable stores the current 'state' of a pager. A -** pager may be in any one of the seven states shown in the following -** state diagram. -** -** OPEN <------+------+ -** | | | -** V | | -** +---------> READER-------+ | -** | | | -** | V | -** |<-------WRITER_LOCKED------> ERROR -** | | ^ -** | V | -** |<------WRITER_CACHEMOD-------->| -** | | | -** | V | -** |<-------WRITER_DBMOD---------->| -** | | | -** | V | -** +<------WRITER_FINISHED-------->+ -** -** -** List of state transitions and the C [function] that performs each: -** -** OPEN -> READER [sqlite3PagerSharedLock] -** READER -> OPEN [pager_unlock] -** -** READER -> WRITER_LOCKED [sqlite3PagerBegin] -** WRITER_LOCKED -> WRITER_CACHEMOD [pager_open_journal] -** WRITER_CACHEMOD -> WRITER_DBMOD [syncJournal] -** WRITER_DBMOD -> WRITER_FINISHED [sqlite3PagerCommitPhaseOne] -** WRITER_*** -> READER [pager_end_transaction] -** -** WRITER_*** -> ERROR [pager_error] -** ERROR -> OPEN [pager_unlock] -** -** -** OPEN: -** -** The pager starts up in this state. Nothing is guaranteed in this -** state - the file may or may not be locked and the database size is -** unknown. The database may not be read or written. -** -** * No read or write transaction is active. -** * Any lock, or no lock at all, may be held on the database file. -** * The dbSize, dbOrigSize and dbFileSize variables may not be trusted. -** -** READER: -** -** In this state all the requirements for reading the database in -** rollback (non-WAL) mode are met. Unless the pager is (or recently -** was) in exclusive-locking mode, a user-level read transaction is -** open. The database size is known in this state. -** -** A connection running with locking_mode=normal enters this state when -** it opens a read-transaction on the database and returns to state -** OPEN after the read-transaction is completed. However a connection -** running in locking_mode=exclusive (including temp databases) remains in -** this state even after the read-transaction is closed. The only way -** a locking_mode=exclusive connection can transition from READER to OPEN -** is via the ERROR state (see below). -** -** * A read transaction may be active (but a write-transaction cannot). -** * A SHARED or greater lock is held on the database file. -** * The dbSize variable may be trusted (even if a user-level read -** transaction is not active). The dbOrigSize and dbFileSize variables -** may not be trusted at this point. -** * If the database is a WAL database, then the WAL connection is open. -** * Even if a read-transaction is not open, it is guaranteed that -** there is no hot-journal in the file-system. -** -** WRITER_LOCKED: -** -** The pager moves to this state from READER when a write-transaction -** is first opened on the database. In WRITER_LOCKED state, all locks -** required to start a write-transaction are held, but no actual -** modifications to the cache or database have taken place. -** -** In rollback mode, a RESERVED or (if the transaction was opened with -** BEGIN EXCLUSIVE) EXCLUSIVE lock is obtained on the database file when -** moving to this state, but the journal file is not written to or opened -** to in this state. If the transaction is committed or rolled back while -** in WRITER_LOCKED state, all that is required is to unlock the database -** file. -** -** IN WAL mode, WalBeginWriteTransaction() is called to lock the log file. -** If the connection is running with locking_mode=exclusive, an attempt -** is made to obtain an EXCLUSIVE lock on the database file. -** -** * A write transaction is active. -** * If the connection is open in rollback-mode, a RESERVED or greater -** lock is held on the database file. -** * If the connection is open in WAL-mode, a WAL write transaction -** is open (i.e. sqlite3WalBeginWriteTransaction() has been successfully -** called). -** * The dbSize, dbOrigSize and dbFileSize variables are all valid. -** * The contents of the pager cache have not been modified. -** * The journal file may or may not be open. -** * Nothing (not even the first header) has been written to the journal. -** -** WRITER_CACHEMOD: -** -** A pager moves from WRITER_LOCKED state to this state when a page is -** first modified by the upper layer. In rollback mode the journal file -** is opened (if it is not already open) and a header written to the -** start of it. The database file on disk has not been modified. -** -** * A write transaction is active. -** * A RESERVED or greater lock is held on the database file. -** * The journal file is open and the first header has been written -** to it, but the header has not been synced to disk. -** * The contents of the page cache have been modified. -** -** WRITER_DBMOD: -** -** The pager transitions from WRITER_CACHEMOD into WRITER_DBMOD state -** when it modifies the contents of the database file. WAL connections -** never enter this state (since they do not modify the database file, -** just the log file). -** -** * A write transaction is active. -** * An EXCLUSIVE or greater lock is held on the database file. -** * The journal file is open and the first header has been written -** and synced to disk. -** * The contents of the page cache have been modified (and possibly -** written to disk). -** -** WRITER_FINISHED: -** -** It is not possible for a WAL connection to enter this state. -** -** A rollback-mode pager changes to WRITER_FINISHED state from WRITER_DBMOD -** state after the entire transaction has been successfully written into the -** database file. In this state the transaction may be committed simply -** by finalizing the journal file. Once in WRITER_FINISHED state, it is -** not possible to modify the database further. At this point, the upper -** layer must either commit or rollback the transaction. -** -** * A write transaction is active. -** * An EXCLUSIVE or greater lock is held on the database file. -** * All writing and syncing of journal and database data has finished. -** If no error occured, all that remains is to finalize the journal to -** commit the transaction. If an error did occur, the caller will need -** to rollback the transaction. -** -** ERROR: -** -** The ERROR state is entered when an IO or disk-full error (including -** SQLITE_IOERR_NOMEM) occurs at a point in the code that makes it -** difficult to be sure that the in-memory pager state (cache contents, -** db size etc.) are consistent with the contents of the file-system. -** -** Temporary pager files may enter the ERROR state, but in-memory pagers -** cannot. -** -** For example, if an IO error occurs while performing a rollback, -** the contents of the page-cache may be left in an inconsistent state. -** At this point it would be dangerous to change back to READER state -** (as usually happens after a rollback). Any subsequent readers might -** report database corruption (due to the inconsistent cache), and if -** they upgrade to writers, they may inadvertently corrupt the database -** file. To avoid this hazard, the pager switches into the ERROR state -** instead of READER following such an error. -** -** Once it has entered the ERROR state, any attempt to use the pager -** to read or write data returns an error. Eventually, once all -** outstanding transactions have been abandoned, the pager is able to -** transition back to OPEN state, discarding the contents of the -** page-cache and any other in-memory state at the same time. Everything -** is reloaded from disk (and, if necessary, hot-journal rollback peformed) -** when a read-transaction is next opened on the pager (transitioning -** the pager into READER state). At that point the system has recovered -** from the error. -** -** Specifically, the pager jumps into the ERROR state if: -** -** 1. An error occurs while attempting a rollback. This happens in -** function sqlite3PagerRollback(). -** -** 2. An error occurs while attempting to finalize a journal file -** following a commit in function sqlite3PagerCommitPhaseTwo(). -** -** 3. An error occurs while attempting to write to the journal or -** database file in function pagerStress() in order to free up -** memory. -** -** In other cases, the error is returned to the b-tree layer. The b-tree -** layer then attempts a rollback operation. If the error condition -** persists, the pager enters the ERROR state via condition (1) above. -** -** Condition (3) is necessary because it can be triggered by a read-only -** statement executed within a transaction. In this case, if the error -** code were simply returned to the user, the b-tree layer would not -** automatically attempt a rollback, as it assumes that an error in a -** read-only statement cannot leave the pager in an internally inconsistent -** state. -** -** * The Pager.errCode variable is set to something other than SQLITE_OK. -** * There are one or more outstanding references to pages (after the -** last reference is dropped the pager should move back to OPEN state). -** * The pager is not an in-memory pager. -** -** -** Notes: -** -** * A pager is never in WRITER_DBMOD or WRITER_FINISHED state if the -** connection is open in WAL mode. A WAL connection is always in one -** of the first four states. -** -** * Normally, a connection open in exclusive mode is never in PAGER_OPEN -** state. There are two exceptions: immediately after exclusive-mode has -** been turned on (and before any read or write transactions are -** executed), and when the pager is leaving the "error state". -** -** * See also: assert_pager_state(). -*/ -#define PAGER_OPEN 0 -#define PAGER_READER 1 -#define PAGER_WRITER_LOCKED 2 -#define PAGER_WRITER_CACHEMOD 3 -#define PAGER_WRITER_DBMOD 4 -#define PAGER_WRITER_FINISHED 5 -#define PAGER_ERROR 6 - -/* -** The Pager.eLock variable is almost always set to one of the -** following locking-states, according to the lock currently held on -** the database file: NO_LOCK, SHARED_LOCK, RESERVED_LOCK or EXCLUSIVE_LOCK. -** This variable is kept up to date as locks are taken and released by -** the pagerLockDb() and pagerUnlockDb() wrappers. -** -** If the VFS xLock() or xUnlock() returns an error other than SQLITE_BUSY -** (i.e. one of the SQLITE_IOERR subtypes), it is not clear whether or not -** the operation was successful. In these circumstances pagerLockDb() and -** pagerUnlockDb() take a conservative approach - eLock is always updated -** when unlocking the file, and only updated when locking the file if the -** VFS call is successful. This way, the Pager.eLock variable may be set -** to a less exclusive (lower) value than the lock that is actually held -** at the system level, but it is never set to a more exclusive value. -** -** This is usually safe. If an xUnlock fails or appears to fail, there may -** be a few redundant xLock() calls or a lock may be held for longer than -** required, but nothing really goes wrong. -** -** The exception is when the database file is unlocked as the pager moves -** from ERROR to OPEN state. At this point there may be a hot-journal file -** in the file-system that needs to be rolled back (as part of a OPEN->SHARED -** transition, by the same pager or any other). If the call to xUnlock() -** fails at this point and the pager is left holding an EXCLUSIVE lock, this -** can confuse the call to xCheckReservedLock() call made later as part -** of hot-journal detection. -** -** xCheckReservedLock() is defined as returning true "if there is a RESERVED -** lock held by this process or any others". So xCheckReservedLock may -** return true because the caller itself is holding an EXCLUSIVE lock (but -** doesn't know it because of a previous error in xUnlock). If this happens -** a hot-journal may be mistaken for a journal being created by an active -** transaction in another process, causing SQLite to read from the database -** without rolling it back. -** -** To work around this, if a call to xUnlock() fails when unlocking the -** database in the ERROR state, Pager.eLock is set to UNKNOWN_LOCK. It -** is only changed back to a real locking state after a successful call -** to xLock(EXCLUSIVE). Also, the code to do the OPEN->SHARED state transition -** omits the check for a hot-journal if Pager.eLock is set to UNKNOWN_LOCK -** lock. Instead, it assumes a hot-journal exists and obtains an EXCLUSIVE -** lock on the database file before attempting to roll it back. See function -** PagerSharedLock() for more detail. -** -** Pager.eLock may only be set to UNKNOWN_LOCK when the pager is in -** PAGER_OPEN state. -*/ -#define UNKNOWN_LOCK (EXCLUSIVE_LOCK+1) - -/* -** A macro used for invoking the codec if there is one -*/ -#ifdef SQLITE_HAS_CODEC -# define CODEC1(P,D,N,X,E) \ - if( P->xCodec && P->xCodec(P->pCodec,D,N,X)==0 ){ E; } -# define CODEC2(P,D,N,X,E,O) \ - if( P->xCodec==0 ){ O=(char*)D; }else \ - if( (O=(char*)(P->xCodec(P->pCodec,D,N,X)))==0 ){ E; } -#else -# define CODEC1(P,D,N,X,E) /* NO-OP */ -# define CODEC2(P,D,N,X,E,O) O=(char*)D -#endif - -/* -** The maximum allowed sector size. 64KiB. If the xSectorsize() method -** returns a value larger than this, then MAX_SECTOR_SIZE is used instead. -** This could conceivably cause corruption following a power failure on -** such a system. This is currently an undocumented limit. -*/ -#define MAX_SECTOR_SIZE 0x10000 - -/* -** An instance of the following structure is allocated for each active -** savepoint and statement transaction in the system. All such structures -** are stored in the Pager.aSavepoint[] array, which is allocated and -** resized using sqlite3Realloc(). -** -** When a savepoint is created, the PagerSavepoint.iHdrOffset field is -** set to 0. If a journal-header is written into the main journal while -** the savepoint is active, then iHdrOffset is set to the byte offset -** immediately following the last journal record written into the main -** journal before the journal-header. This is required during savepoint -** rollback (see pagerPlaybackSavepoint()). -*/ -typedef struct PagerSavepoint PagerSavepoint; -struct PagerSavepoint { - i64 iOffset; /* Starting offset in main journal */ - i64 iHdrOffset; /* See above */ - Bitvec *pInSavepoint; /* Set of pages in this savepoint */ - Pgno nOrig; /* Original number of pages in file */ - Pgno iSubRec; /* Index of first record in sub-journal */ -#ifndef SQLITE_OMIT_WAL - u32 aWalData[WAL_SAVEPOINT_NDATA]; /* WAL savepoint context */ -#endif -}; - -/* -** A open page cache is an instance of struct Pager. A description of -** some of the more important member variables follows: -** -** eState -** -** The current 'state' of the pager object. See the comment and state -** diagram above for a description of the pager state. -** -** eLock -** -** For a real on-disk database, the current lock held on the database file - -** NO_LOCK, SHARED_LOCK, RESERVED_LOCK or EXCLUSIVE_LOCK. -** -** For a temporary or in-memory database (neither of which require any -** locks), this variable is always set to EXCLUSIVE_LOCK. Since such -** databases always have Pager.exclusiveMode==1, this tricks the pager -** logic into thinking that it already has all the locks it will ever -** need (and no reason to release them). -** -** In some (obscure) circumstances, this variable may also be set to -** UNKNOWN_LOCK. See the comment above the #define of UNKNOWN_LOCK for -** details. -** -** changeCountDone -** -** This boolean variable is used to make sure that the change-counter -** (the 4-byte header field at byte offset 24 of the database file) is -** not updated more often than necessary. -** -** It is set to true when the change-counter field is updated, which -** can only happen if an exclusive lock is held on the database file. -** It is cleared (set to false) whenever an exclusive lock is -** relinquished on the database file. Each time a transaction is committed, -** The changeCountDone flag is inspected. If it is true, the work of -** updating the change-counter is omitted for the current transaction. -** -** This mechanism means that when running in exclusive mode, a connection -** need only update the change-counter once, for the first transaction -** committed. -** -** setMaster -** -** When PagerCommitPhaseOne() is called to commit a transaction, it may -** (or may not) specify a master-journal name to be written into the -** journal file before it is synced to disk. -** -** Whether or not a journal file contains a master-journal pointer affects -** the way in which the journal file is finalized after the transaction is -** committed or rolled back when running in "journal_mode=PERSIST" mode. -** If a journal file does not contain a master-journal pointer, it is -** finalized by overwriting the first journal header with zeroes. If -** it does contain a master-journal pointer the journal file is finalized -** by truncating it to zero bytes, just as if the connection were -** running in "journal_mode=truncate" mode. -** -** Journal files that contain master journal pointers cannot be finalized -** simply by overwriting the first journal-header with zeroes, as the -** master journal pointer could interfere with hot-journal rollback of any -** subsequently interrupted transaction that reuses the journal file. -** -** The flag is cleared as soon as the journal file is finalized (either -** by PagerCommitPhaseTwo or PagerRollback). If an IO error prevents the -** journal file from being successfully finalized, the setMaster flag -** is cleared anyway (and the pager will move to ERROR state). -** -** doNotSpill, doNotSyncSpill -** -** These two boolean variables control the behaviour of cache-spills -** (calls made by the pcache module to the pagerStress() routine to -** write cached data to the file-system in order to free up memory). -** -** When doNotSpill is non-zero, writing to the database from pagerStress() -** is disabled altogether. This is done in a very obscure case that -** comes up during savepoint rollback that requires the pcache module -** to allocate a new page to prevent the journal file from being written -** while it is being traversed by code in pager_playback(). -** -** If doNotSyncSpill is non-zero, writing to the database from pagerStress() -** is permitted, but syncing the journal file is not. This flag is set -** by sqlite3PagerWrite() when the file-system sector-size is larger than -** the database page-size in order to prevent a journal sync from happening -** in between the journalling of two pages on the same sector. -** -** subjInMemory -** -** This is a boolean variable. If true, then any required sub-journal -** is opened as an in-memory journal file. If false, then in-memory -** sub-journals are only used for in-memory pager files. -** -** This variable is updated by the upper layer each time a new -** write-transaction is opened. -** -** dbSize, dbOrigSize, dbFileSize -** -** Variable dbSize is set to the number of pages in the database file. -** It is valid in PAGER_READER and higher states (all states except for -** OPEN and ERROR). -** -** dbSize is set based on the size of the database file, which may be -** larger than the size of the database (the value stored at offset -** 28 of the database header by the btree). If the size of the file -** is not an integer multiple of the page-size, the value stored in -** dbSize is rounded down (i.e. a 5KB file with 2K page-size has dbSize==2). -** Except, any file that is greater than 0 bytes in size is considered -** to have at least one page. (i.e. a 1KB file with 2K page-size leads -** to dbSize==1). -** -** During a write-transaction, if pages with page-numbers greater than -** dbSize are modified in the cache, dbSize is updated accordingly. -** Similarly, if the database is truncated using PagerTruncateImage(), -** dbSize is updated. -** -** Variables dbOrigSize and dbFileSize are valid in states -** PAGER_WRITER_LOCKED and higher. dbOrigSize is a copy of the dbSize -** variable at the start of the transaction. It is used during rollback, -** and to determine whether or not pages need to be journalled before -** being modified. -** -** Throughout a write-transaction, dbFileSize contains the size of -** the file on disk in pages. It is set to a copy of dbSize when the -** write-transaction is first opened, and updated when VFS calls are made -** to write or truncate the database file on disk. -** -** The only reason the dbFileSize variable is required is to suppress -** unnecessary calls to xTruncate() after committing a transaction. If, -** when a transaction is committed, the dbFileSize variable indicates -** that the database file is larger than the database image (Pager.dbSize), -** pager_truncate() is called. The pager_truncate() call uses xFilesize() -** to measure the database file on disk, and then truncates it if required. -** dbFileSize is not used when rolling back a transaction. In this case -** pager_truncate() is called unconditionally (which means there may be -** a call to xFilesize() that is not strictly required). In either case, -** pager_truncate() may cause the file to become smaller or larger. -** -** dbHintSize -** -** The dbHintSize variable is used to limit the number of calls made to -** the VFS xFileControl(FCNTL_SIZE_HINT) method. -** -** dbHintSize is set to a copy of the dbSize variable when a -** write-transaction is opened (at the same time as dbFileSize and -** dbOrigSize). If the xFileControl(FCNTL_SIZE_HINT) method is called, -** dbHintSize is increased to the number of pages that correspond to the -** size-hint passed to the method call. See pager_write_pagelist() for -** details. -** -** errCode -** -** The Pager.errCode variable is only ever used in PAGER_ERROR state. It -** is set to zero in all other states. In PAGER_ERROR state, Pager.errCode -** is always set to SQLITE_FULL, SQLITE_IOERR or one of the SQLITE_IOERR_XXX -** sub-codes. -*/ -struct Pager { - sqlite3_vfs *pVfs; /* OS functions to use for IO */ - u8 exclusiveMode; /* Boolean. True if locking_mode==EXCLUSIVE */ - u8 journalMode; /* One of the PAGER_JOURNALMODE_* values */ - u8 useJournal; /* Use a rollback journal on this file */ - u8 noReadlock; /* Do not bother to obtain readlocks */ - u8 noSync; /* Do not sync the journal if true */ - u8 fullSync; /* Do extra syncs of the journal for robustness */ - u8 ckptSyncFlags; /* SYNC_NORMAL or SYNC_FULL for checkpoint */ - u8 syncFlags; /* SYNC_NORMAL or SYNC_FULL otherwise */ - u8 tempFile; /* zFilename is a temporary file */ - u8 readOnly; /* True for a read-only database */ - u8 memDb; /* True to inhibit all file I/O */ - - /************************************************************************** - ** The following block contains those class members that change during - ** routine opertion. Class members not in this block are either fixed - ** when the pager is first created or else only change when there is a - ** significant mode change (such as changing the page_size, locking_mode, - ** or the journal_mode). From another view, these class members describe - ** the "state" of the pager, while other class members describe the - ** "configuration" of the pager. - */ - u8 eState; /* Pager state (OPEN, READER, WRITER_LOCKED..) */ - u8 eLock; /* Current lock held on database file */ - u8 changeCountDone; /* Set after incrementing the change-counter */ - u8 setMaster; /* True if a m-j name has been written to jrnl */ - u8 doNotSpill; /* Do not spill the cache when non-zero */ - u8 doNotSyncSpill; /* Do not do a spill that requires jrnl sync */ - u8 subjInMemory; /* True to use in-memory sub-journals */ - Pgno dbSize; /* Number of pages in the database */ - Pgno dbOrigSize; /* dbSize before the current transaction */ - Pgno dbFileSize; /* Number of pages in the database file */ - Pgno dbHintSize; /* Value passed to FCNTL_SIZE_HINT call */ - int errCode; /* One of several kinds of errors */ - int nRec; /* Pages journalled since last j-header written */ - u32 cksumInit; /* Quasi-random value added to every checksum */ - u32 nSubRec; /* Number of records written to sub-journal */ - Bitvec *pInJournal; /* One bit for each page in the database file */ - sqlite3_file *fd; /* File descriptor for database */ - sqlite3_file *jfd; /* File descriptor for main journal */ - sqlite3_file *sjfd; /* File descriptor for sub-journal */ - i64 journalOff; /* Current write offset in the journal file */ - i64 journalHdr; /* Byte offset to previous journal header */ - sqlite3_backup *pBackup; /* Pointer to list of ongoing backup processes */ - PagerSavepoint *aSavepoint; /* Array of active savepoints */ - int nSavepoint; /* Number of elements in aSavepoint[] */ - char dbFileVers[16]; /* Changes whenever database file changes */ - /* - ** End of the routinely-changing class members - ***************************************************************************/ - - u16 nExtra; /* Add this many bytes to each in-memory page */ - i16 nReserve; /* Number of unused bytes at end of each page */ - u32 vfsFlags; /* Flags for sqlite3_vfs.xOpen() */ - u32 sectorSize; /* Assumed sector size during rollback */ - int pageSize; /* Number of bytes in a page */ - Pgno mxPgno; /* Maximum allowed size of the database */ - i64 journalSizeLimit; /* Size limit for persistent journal files */ - char *zFilename; /* Name of the database file */ - char *zJournal; /* Name of the journal file */ - int (*xBusyHandler)(void*); /* Function to call when busy */ - void *pBusyHandlerArg; /* Context argument for xBusyHandler */ - int nHit, nMiss; /* Total cache hits and misses */ -#ifdef SQLITE_TEST - int nRead, nWrite; /* Database pages read/written */ -#endif - void (*xReiniter)(DbPage*); /* Call this routine when reloading pages */ -#ifdef SQLITE_HAS_CODEC - void *(*xCodec)(void*,void*,Pgno,int); /* Routine for en/decoding data */ - void (*xCodecSizeChng)(void*,int,int); /* Notify of page size changes */ - void (*xCodecFree)(void*); /* Destructor for the codec */ - void *pCodec; /* First argument to xCodec... methods */ -#endif - char *pTmpSpace; /* Pager.pageSize bytes of space for tmp use */ - PCache *pPCache; /* Pointer to page cache object */ -#ifndef SQLITE_OMIT_WAL - Wal *pWal; /* Write-ahead log used by "journal_mode=wal" */ - char *zWal; /* File name for write-ahead log */ -#endif -}; - -/* -** The following global variables hold counters used for -** testing purposes only. These variables do not exist in -** a non-testing build. These variables are not thread-safe. -*/ -#ifdef SQLITE_TEST -int sqlite3_pager_readdb_count = 0; /* Number of full pages read from DB */ -int sqlite3_pager_writedb_count = 0; /* Number of full pages written to DB */ -int sqlite3_pager_writej_count = 0; /* Number of pages written to journal */ -# define PAGER_INCR(v) v++ -#else -# define PAGER_INCR(v) -#endif - - - -/* -** Journal files begin with the following magic string. The data -** was obtained from /dev/random. It is used only as a sanity check. -** -** Since version 2.8.0, the journal format contains additional sanity -** checking information. If the power fails while the journal is being -** written, semi-random garbage data might appear in the journal -** file after power is restored. If an attempt is then made -** to roll the journal back, the database could be corrupted. The additional -** sanity checking data is an attempt to discover the garbage in the -** journal and ignore it. -** -** The sanity checking information for the new journal format consists -** of a 32-bit checksum on each page of data. The checksum covers both -** the page number and the pPager->pageSize bytes of data for the page. -** This cksum is initialized to a 32-bit random value that appears in the -** journal file right after the header. The random initializer is important, -** because garbage data that appears at the end of a journal is likely -** data that was once in other files that have now been deleted. If the -** garbage data came from an obsolete journal file, the checksums might -** be correct. But by initializing the checksum to random value which -** is different for every journal, we minimize that risk. -*/ -static const unsigned char aJournalMagic[] = { - 0xd9, 0xd5, 0x05, 0xf9, 0x20, 0xa1, 0x63, 0xd7, -}; - -/* -** The size of the of each page record in the journal is given by -** the following macro. -*/ -#define JOURNAL_PG_SZ(pPager) ((pPager->pageSize) + 8) - -/* -** The journal header size for this pager. This is usually the same -** size as a single disk sector. See also setSectorSize(). -*/ -#define JOURNAL_HDR_SZ(pPager) (pPager->sectorSize) - -/* -** The macro MEMDB is true if we are dealing with an in-memory database. -** We do this as a macro so that if the SQLITE_OMIT_MEMORYDB macro is set, -** the value of MEMDB will be a constant and the compiler will optimize -** out code that would never execute. -*/ -#ifdef SQLITE_OMIT_MEMORYDB -# define MEMDB 0 -#else -# define MEMDB pPager->memDb -#endif - -/* -** The maximum legal page number is (2^31 - 1). -*/ -#define PAGER_MAX_PGNO 2147483647 - -/* -** The argument to this macro is a file descriptor (type sqlite3_file*). -** Return 0 if it is not open, or non-zero (but not 1) if it is. -** -** This is so that expressions can be written as: -** -** if( isOpen(pPager->jfd) ){ ... -** -** instead of -** -** if( pPager->jfd->pMethods ){ ... -*/ -#define isOpen(pFd) ((pFd)->pMethods) - -/* -** Return true if this pager uses a write-ahead log instead of the usual -** rollback journal. Otherwise false. -*/ -#ifndef SQLITE_OMIT_WAL -static int pagerUseWal(Pager *pPager){ - return (pPager->pWal!=0); -} -#else -# define pagerUseWal(x) 0 -# define pagerRollbackWal(x) 0 -# define pagerWalFrames(v,w,x,y,z) 0 -# define pagerOpenWalIfPresent(z) SQLITE_OK -# define pagerBeginReadTransaction(z) SQLITE_OK -#endif - -#ifndef NDEBUG -/* -** Usage: -** -** assert( assert_pager_state(pPager) ); -** -** This function runs many asserts to try to find inconsistencies in -** the internal state of the Pager object. -*/ -static int assert_pager_state(Pager *p){ - Pager *pPager = p; - - /* State must be valid. */ - assert( p->eState==PAGER_OPEN - || p->eState==PAGER_READER - || p->eState==PAGER_WRITER_LOCKED - || p->eState==PAGER_WRITER_CACHEMOD - || p->eState==PAGER_WRITER_DBMOD - || p->eState==PAGER_WRITER_FINISHED - || p->eState==PAGER_ERROR - ); - - /* Regardless of the current state, a temp-file connection always behaves - ** as if it has an exclusive lock on the database file. It never updates - ** the change-counter field, so the changeCountDone flag is always set. - */ - assert( p->tempFile==0 || p->eLock==EXCLUSIVE_LOCK ); - assert( p->tempFile==0 || pPager->changeCountDone ); - - /* If the useJournal flag is clear, the journal-mode must be "OFF". - ** And if the journal-mode is "OFF", the journal file must not be open. - */ - assert( p->journalMode==PAGER_JOURNALMODE_OFF || p->useJournal ); - assert( p->journalMode!=PAGER_JOURNALMODE_OFF || !isOpen(p->jfd) ); - - /* Check that MEMDB implies noSync. And an in-memory journal. Since - ** this means an in-memory pager performs no IO at all, it cannot encounter - ** either SQLITE_IOERR or SQLITE_FULL during rollback or while finalizing - ** a journal file. (although the in-memory journal implementation may - ** return SQLITE_IOERR_NOMEM while the journal file is being written). It - ** is therefore not possible for an in-memory pager to enter the ERROR - ** state. - */ - if( MEMDB ){ - assert( p->noSync ); - assert( p->journalMode==PAGER_JOURNALMODE_OFF - || p->journalMode==PAGER_JOURNALMODE_MEMORY - ); - assert( p->eState!=PAGER_ERROR && p->eState!=PAGER_OPEN ); - assert( pagerUseWal(p)==0 ); - } - - /* If changeCountDone is set, a RESERVED lock or greater must be held - ** on the file. - */ - assert( pPager->changeCountDone==0 || pPager->eLock>=RESERVED_LOCK ); - assert( p->eLock!=PENDING_LOCK ); - - switch( p->eState ){ - case PAGER_OPEN: - assert( !MEMDB ); - assert( pPager->errCode==SQLITE_OK ); - assert( sqlite3PcacheRefCount(pPager->pPCache)==0 || pPager->tempFile ); - break; - - case PAGER_READER: - assert( pPager->errCode==SQLITE_OK ); - assert( p->eLock!=UNKNOWN_LOCK ); - assert( p->eLock>=SHARED_LOCK || p->noReadlock ); - break; - - case PAGER_WRITER_LOCKED: - assert( p->eLock!=UNKNOWN_LOCK ); - assert( pPager->errCode==SQLITE_OK ); - if( !pagerUseWal(pPager) ){ - assert( p->eLock>=RESERVED_LOCK ); - } - assert( pPager->dbSize==pPager->dbOrigSize ); - assert( pPager->dbOrigSize==pPager->dbFileSize ); - assert( pPager->dbOrigSize==pPager->dbHintSize ); - assert( pPager->setMaster==0 ); - break; - - case PAGER_WRITER_CACHEMOD: - assert( p->eLock!=UNKNOWN_LOCK ); - assert( pPager->errCode==SQLITE_OK ); - if( !pagerUseWal(pPager) ){ - /* It is possible that if journal_mode=wal here that neither the - ** journal file nor the WAL file are open. This happens during - ** a rollback transaction that switches from journal_mode=off - ** to journal_mode=wal. - */ - assert( p->eLock>=RESERVED_LOCK ); - assert( isOpen(p->jfd) - || p->journalMode==PAGER_JOURNALMODE_OFF - || p->journalMode==PAGER_JOURNALMODE_WAL - ); - } - assert( pPager->dbOrigSize==pPager->dbFileSize ); - assert( pPager->dbOrigSize==pPager->dbHintSize ); - break; - - case PAGER_WRITER_DBMOD: - assert( p->eLock==EXCLUSIVE_LOCK ); - assert( pPager->errCode==SQLITE_OK ); - assert( !pagerUseWal(pPager) ); - assert( p->eLock>=EXCLUSIVE_LOCK ); - assert( isOpen(p->jfd) - || p->journalMode==PAGER_JOURNALMODE_OFF - || p->journalMode==PAGER_JOURNALMODE_WAL - ); - assert( pPager->dbOrigSize<=pPager->dbHintSize ); - break; - - case PAGER_WRITER_FINISHED: - assert( p->eLock==EXCLUSIVE_LOCK ); - assert( pPager->errCode==SQLITE_OK ); - assert( !pagerUseWal(pPager) ); - assert( isOpen(p->jfd) - || p->journalMode==PAGER_JOURNALMODE_OFF - || p->journalMode==PAGER_JOURNALMODE_WAL - ); - break; - - case PAGER_ERROR: - /* There must be at least one outstanding reference to the pager if - ** in ERROR state. Otherwise the pager should have already dropped - ** back to OPEN state. - */ - assert( pPager->errCode!=SQLITE_OK ); - assert( sqlite3PcacheRefCount(pPager->pPCache)>0 ); - break; - } - - return 1; -} -#endif /* ifndef NDEBUG */ - -#ifdef SQLITE_DEBUG -/* -** Return a pointer to a human readable string in a static buffer -** containing the state of the Pager object passed as an argument. This -** is intended to be used within debuggers. For example, as an alternative -** to "print *pPager" in gdb: -** -** (gdb) printf "%s", print_pager_state(pPager) -*/ -static char *print_pager_state(Pager *p){ - static char zRet[1024]; - - sqlite3_snprintf(1024, zRet, - "Filename: %s\n" - "State: %s errCode=%d\n" - "Lock: %s\n" - "Locking mode: locking_mode=%s\n" - "Journal mode: journal_mode=%s\n" - "Backing store: tempFile=%d memDb=%d useJournal=%d\n" - "Journal: journalOff=%lld journalHdr=%lld\n" - "Size: dbsize=%d dbOrigSize=%d dbFileSize=%d\n" - , p->zFilename - , p->eState==PAGER_OPEN ? "OPEN" : - p->eState==PAGER_READER ? "READER" : - p->eState==PAGER_WRITER_LOCKED ? "WRITER_LOCKED" : - p->eState==PAGER_WRITER_CACHEMOD ? "WRITER_CACHEMOD" : - p->eState==PAGER_WRITER_DBMOD ? "WRITER_DBMOD" : - p->eState==PAGER_WRITER_FINISHED ? "WRITER_FINISHED" : - p->eState==PAGER_ERROR ? "ERROR" : "?error?" - , (int)p->errCode - , p->eLock==NO_LOCK ? "NO_LOCK" : - p->eLock==RESERVED_LOCK ? "RESERVED" : - p->eLock==EXCLUSIVE_LOCK ? "EXCLUSIVE" : - p->eLock==SHARED_LOCK ? "SHARED" : - p->eLock==UNKNOWN_LOCK ? "UNKNOWN" : "?error?" - , p->exclusiveMode ? "exclusive" : "normal" - , p->journalMode==PAGER_JOURNALMODE_MEMORY ? "memory" : - p->journalMode==PAGER_JOURNALMODE_OFF ? "off" : - p->journalMode==PAGER_JOURNALMODE_DELETE ? "delete" : - p->journalMode==PAGER_JOURNALMODE_PERSIST ? "persist" : - p->journalMode==PAGER_JOURNALMODE_TRUNCATE ? "truncate" : - p->journalMode==PAGER_JOURNALMODE_WAL ? "wal" : "?error?" - , (int)p->tempFile, (int)p->memDb, (int)p->useJournal - , p->journalOff, p->journalHdr - , (int)p->dbSize, (int)p->dbOrigSize, (int)p->dbFileSize - ); - - return zRet; -} -#endif - -/* -** Return true if it is necessary to write page *pPg into the sub-journal. -** A page needs to be written into the sub-journal if there exists one -** or more open savepoints for which: -** -** * The page-number is less than or equal to PagerSavepoint.nOrig, and -** * The bit corresponding to the page-number is not set in -** PagerSavepoint.pInSavepoint. -*/ -static int subjRequiresPage(PgHdr *pPg){ - Pgno pgno = pPg->pgno; - Pager *pPager = pPg->pPager; - int i; - for(i=0; inSavepoint; i++){ - PagerSavepoint *p = &pPager->aSavepoint[i]; - if( p->nOrig>=pgno && 0==sqlite3BitvecTest(p->pInSavepoint, pgno) ){ - return 1; - } - } - return 0; -} - -/* -** Return true if the page is already in the journal file. -*/ -static int pageInJournal(PgHdr *pPg){ - return sqlite3BitvecTest(pPg->pPager->pInJournal, pPg->pgno); -} - -/* -** Read a 32-bit integer from the given file descriptor. Store the integer -** that is read in *pRes. Return SQLITE_OK if everything worked, or an -** error code is something goes wrong. -** -** All values are stored on disk as big-endian. -*/ -static int read32bits(sqlite3_file *fd, i64 offset, u32 *pRes){ - unsigned char ac[4]; - int rc = sqlite3OsRead(fd, ac, sizeof(ac), offset); - if( rc==SQLITE_OK ){ - *pRes = sqlite3Get4byte(ac); - } - return rc; -} - -/* -** Write a 32-bit integer into a string buffer in big-endian byte order. -*/ -#define put32bits(A,B) sqlite3Put4byte((u8*)A,B) - - -/* -** Write a 32-bit integer into the given file descriptor. Return SQLITE_OK -** on success or an error code is something goes wrong. -*/ -static int write32bits(sqlite3_file *fd, i64 offset, u32 val){ - char ac[4]; - put32bits(ac, val); - return sqlite3OsWrite(fd, ac, 4, offset); -} - -/* -** Unlock the database file to level eLock, which must be either NO_LOCK -** or SHARED_LOCK. Regardless of whether or not the call to xUnlock() -** succeeds, set the Pager.eLock variable to match the (attempted) new lock. -** -** Except, if Pager.eLock is set to UNKNOWN_LOCK when this function is -** called, do not modify it. See the comment above the #define of -** UNKNOWN_LOCK for an explanation of this. -*/ -static int pagerUnlockDb(Pager *pPager, int eLock){ - int rc = SQLITE_OK; - - assert( !pPager->exclusiveMode || pPager->eLock==eLock ); - assert( eLock==NO_LOCK || eLock==SHARED_LOCK ); - assert( eLock!=NO_LOCK || pagerUseWal(pPager)==0 ); - if( isOpen(pPager->fd) ){ - assert( pPager->eLock>=eLock ); - rc = sqlite3OsUnlock(pPager->fd, eLock); - if( pPager->eLock!=UNKNOWN_LOCK ){ - pPager->eLock = (u8)eLock; - } - IOTRACE(("UNLOCK %p %d\n", pPager, eLock)) - } - return rc; -} - -/* -** Lock the database file to level eLock, which must be either SHARED_LOCK, -** RESERVED_LOCK or EXCLUSIVE_LOCK. If the caller is successful, set the -** Pager.eLock variable to the new locking state. -** -** Except, if Pager.eLock is set to UNKNOWN_LOCK when this function is -** called, do not modify it unless the new locking state is EXCLUSIVE_LOCK. -** See the comment above the #define of UNKNOWN_LOCK for an explanation -** of this. -*/ -static int pagerLockDb(Pager *pPager, int eLock){ - int rc = SQLITE_OK; - - assert( eLock==SHARED_LOCK || eLock==RESERVED_LOCK || eLock==EXCLUSIVE_LOCK ); - if( pPager->eLockeLock==UNKNOWN_LOCK ){ - rc = sqlite3OsLock(pPager->fd, eLock); - if( rc==SQLITE_OK && (pPager->eLock!=UNKNOWN_LOCK||eLock==EXCLUSIVE_LOCK) ){ - pPager->eLock = (u8)eLock; - IOTRACE(("LOCK %p %d\n", pPager, eLock)) - } - } - return rc; -} - -/* -** This function determines whether or not the atomic-write optimization -** can be used with this pager. The optimization can be used if: -** -** (a) the value returned by OsDeviceCharacteristics() indicates that -** a database page may be written atomically, and -** (b) the value returned by OsSectorSize() is less than or equal -** to the page size. -** -** The optimization is also always enabled for temporary files. It is -** an error to call this function if pPager is opened on an in-memory -** database. -** -** If the optimization cannot be used, 0 is returned. If it can be used, -** then the value returned is the size of the journal file when it -** contains rollback data for exactly one page. -*/ -#ifdef SQLITE_ENABLE_ATOMIC_WRITE -static int jrnlBufferSize(Pager *pPager){ - assert( !MEMDB ); - if( !pPager->tempFile ){ - int dc; /* Device characteristics */ - int nSector; /* Sector size */ - int szPage; /* Page size */ - - assert( isOpen(pPager->fd) ); - dc = sqlite3OsDeviceCharacteristics(pPager->fd); - nSector = pPager->sectorSize; - szPage = pPager->pageSize; - - assert(SQLITE_IOCAP_ATOMIC512==(512>>8)); - assert(SQLITE_IOCAP_ATOMIC64K==(65536>>8)); - if( 0==(dc&(SQLITE_IOCAP_ATOMIC|(szPage>>8)) || nSector>szPage) ){ - return 0; - } - } - - return JOURNAL_HDR_SZ(pPager) + JOURNAL_PG_SZ(pPager); -} -#endif - -/* -** If SQLITE_CHECK_PAGES is defined then we do some sanity checking -** on the cache using a hash function. This is used for testing -** and debugging only. -*/ -#ifdef SQLITE_CHECK_PAGES -/* -** Return a 32-bit hash of the page data for pPage. -*/ -static u32 pager_datahash(int nByte, unsigned char *pData){ - u32 hash = 0; - int i; - for(i=0; ipPager->pageSize, (unsigned char *)pPage->pData); -} -static void pager_set_pagehash(PgHdr *pPage){ - pPage->pageHash = pager_pagehash(pPage); -} - -/* -** The CHECK_PAGE macro takes a PgHdr* as an argument. If SQLITE_CHECK_PAGES -** is defined, and NDEBUG is not defined, an assert() statement checks -** that the page is either dirty or still matches the calculated page-hash. -*/ -#define CHECK_PAGE(x) checkPage(x) -static void checkPage(PgHdr *pPg){ - Pager *pPager = pPg->pPager; - assert( pPager->eState!=PAGER_ERROR ); - assert( (pPg->flags&PGHDR_DIRTY) || pPg->pageHash==pager_pagehash(pPg) ); -} - -#else -#define pager_datahash(X,Y) 0 -#define pager_pagehash(X) 0 -#define pager_set_pagehash(X) -#define CHECK_PAGE(x) -#endif /* SQLITE_CHECK_PAGES */ - -/* -** When this is called the journal file for pager pPager must be open. -** This function attempts to read a master journal file name from the -** end of the file and, if successful, copies it into memory supplied -** by the caller. See comments above writeMasterJournal() for the format -** used to store a master journal file name at the end of a journal file. -** -** zMaster must point to a buffer of at least nMaster bytes allocated by -** the caller. This should be sqlite3_vfs.mxPathname+1 (to ensure there is -** enough space to write the master journal name). If the master journal -** name in the journal is longer than nMaster bytes (including a -** nul-terminator), then this is handled as if no master journal name -** were present in the journal. -** -** If a master journal file name is present at the end of the journal -** file, then it is copied into the buffer pointed to by zMaster. A -** nul-terminator byte is appended to the buffer following the master -** journal file name. -** -** If it is determined that no master journal file name is present -** zMaster[0] is set to 0 and SQLITE_OK returned. -** -** If an error occurs while reading from the journal file, an SQLite -** error code is returned. -*/ -static int readMasterJournal(sqlite3_file *pJrnl, char *zMaster, u32 nMaster){ - int rc; /* Return code */ - u32 len; /* Length in bytes of master journal name */ - i64 szJ; /* Total size in bytes of journal file pJrnl */ - u32 cksum; /* MJ checksum value read from journal */ - u32 u; /* Unsigned loop counter */ - unsigned char aMagic[8]; /* A buffer to hold the magic header */ - zMaster[0] = '\0'; - - if( SQLITE_OK!=(rc = sqlite3OsFileSize(pJrnl, &szJ)) - || szJ<16 - || SQLITE_OK!=(rc = read32bits(pJrnl, szJ-16, &len)) - || len>=nMaster - || SQLITE_OK!=(rc = read32bits(pJrnl, szJ-12, &cksum)) - || SQLITE_OK!=(rc = sqlite3OsRead(pJrnl, aMagic, 8, szJ-8)) - || memcmp(aMagic, aJournalMagic, 8) - || SQLITE_OK!=(rc = sqlite3OsRead(pJrnl, zMaster, len, szJ-16-len)) - ){ - return rc; - } - - /* See if the checksum matches the master journal name */ - for(u=0; ujournalOff, assuming a sector -** size of pPager->sectorSize bytes. -** -** i.e for a sector size of 512: -** -** Pager.journalOff Return value -** --------------------------------------- -** 0 0 -** 512 512 -** 100 512 -** 2000 2048 -** -*/ -static i64 journalHdrOffset(Pager *pPager){ - i64 offset = 0; - i64 c = pPager->journalOff; - if( c ){ - offset = ((c-1)/JOURNAL_HDR_SZ(pPager) + 1) * JOURNAL_HDR_SZ(pPager); - } - assert( offset%JOURNAL_HDR_SZ(pPager)==0 ); - assert( offset>=c ); - assert( (offset-c)jfd) ); - if( pPager->journalOff ){ - const i64 iLimit = pPager->journalSizeLimit; /* Local cache of jsl */ - - IOTRACE(("JZEROHDR %p\n", pPager)) - if( doTruncate || iLimit==0 ){ - rc = sqlite3OsTruncate(pPager->jfd, 0); - }else{ - static const char zeroHdr[28] = {0}; - rc = sqlite3OsWrite(pPager->jfd, zeroHdr, sizeof(zeroHdr), 0); - } - if( rc==SQLITE_OK && !pPager->noSync ){ - rc = sqlite3OsSync(pPager->jfd, SQLITE_SYNC_DATAONLY|pPager->syncFlags); - } - - /* At this point the transaction is committed but the write lock - ** is still held on the file. If there is a size limit configured for - ** the persistent journal and the journal file currently consumes more - ** space than that limit allows for, truncate it now. There is no need - ** to sync the file following this operation. - */ - if( rc==SQLITE_OK && iLimit>0 ){ - i64 sz; - rc = sqlite3OsFileSize(pPager->jfd, &sz); - if( rc==SQLITE_OK && sz>iLimit ){ - rc = sqlite3OsTruncate(pPager->jfd, iLimit); - } - } - } - return rc; -} - -/* -** The journal file must be open when this routine is called. A journal -** header (JOURNAL_HDR_SZ bytes) is written into the journal file at the -** current location. -** -** The format for the journal header is as follows: -** - 8 bytes: Magic identifying journal format. -** - 4 bytes: Number of records in journal, or -1 no-sync mode is on. -** - 4 bytes: Random number used for page hash. -** - 4 bytes: Initial database page count. -** - 4 bytes: Sector size used by the process that wrote this journal. -** - 4 bytes: Database page size. -** -** Followed by (JOURNAL_HDR_SZ - 28) bytes of unused space. -*/ -static int writeJournalHdr(Pager *pPager){ - int rc = SQLITE_OK; /* Return code */ - char *zHeader = pPager->pTmpSpace; /* Temporary space used to build header */ - u32 nHeader = (u32)pPager->pageSize;/* Size of buffer pointed to by zHeader */ - u32 nWrite; /* Bytes of header sector written */ - int ii; /* Loop counter */ - - assert( isOpen(pPager->jfd) ); /* Journal file must be open. */ - - if( nHeader>JOURNAL_HDR_SZ(pPager) ){ - nHeader = JOURNAL_HDR_SZ(pPager); - } - - /* If there are active savepoints and any of them were created - ** since the most recent journal header was written, update the - ** PagerSavepoint.iHdrOffset fields now. - */ - for(ii=0; iinSavepoint; ii++){ - if( pPager->aSavepoint[ii].iHdrOffset==0 ){ - pPager->aSavepoint[ii].iHdrOffset = pPager->journalOff; - } - } - - pPager->journalHdr = pPager->journalOff = journalHdrOffset(pPager); - - /* - ** Write the nRec Field - the number of page records that follow this - ** journal header. Normally, zero is written to this value at this time. - ** After the records are added to the journal (and the journal synced, - ** if in full-sync mode), the zero is overwritten with the true number - ** of records (see syncJournal()). - ** - ** A faster alternative is to write 0xFFFFFFFF to the nRec field. When - ** reading the journal this value tells SQLite to assume that the - ** rest of the journal file contains valid page records. This assumption - ** is dangerous, as if a failure occurred whilst writing to the journal - ** file it may contain some garbage data. There are two scenarios - ** where this risk can be ignored: - ** - ** * When the pager is in no-sync mode. Corruption can follow a - ** power failure in this case anyway. - ** - ** * When the SQLITE_IOCAP_SAFE_APPEND flag is set. This guarantees - ** that garbage data is never appended to the journal file. - */ - assert( isOpen(pPager->fd) || pPager->noSync ); - if( pPager->noSync || (pPager->journalMode==PAGER_JOURNALMODE_MEMORY) - || (sqlite3OsDeviceCharacteristics(pPager->fd)&SQLITE_IOCAP_SAFE_APPEND) - ){ - memcpy(zHeader, aJournalMagic, sizeof(aJournalMagic)); - put32bits(&zHeader[sizeof(aJournalMagic)], 0xffffffff); - }else{ - memset(zHeader, 0, sizeof(aJournalMagic)+4); - } - - /* The random check-hash initialiser */ - sqlite3_randomness(sizeof(pPager->cksumInit), &pPager->cksumInit); - put32bits(&zHeader[sizeof(aJournalMagic)+4], pPager->cksumInit); - /* The initial database size */ - put32bits(&zHeader[sizeof(aJournalMagic)+8], pPager->dbOrigSize); - /* The assumed sector size for this process */ - put32bits(&zHeader[sizeof(aJournalMagic)+12], pPager->sectorSize); - - /* The page size */ - put32bits(&zHeader[sizeof(aJournalMagic)+16], pPager->pageSize); - - /* Initializing the tail of the buffer is not necessary. Everything - ** works find if the following memset() is omitted. But initializing - ** the memory prevents valgrind from complaining, so we are willing to - ** take the performance hit. - */ - memset(&zHeader[sizeof(aJournalMagic)+20], 0, - nHeader-(sizeof(aJournalMagic)+20)); - - /* In theory, it is only necessary to write the 28 bytes that the - ** journal header consumes to the journal file here. Then increment the - ** Pager.journalOff variable by JOURNAL_HDR_SZ so that the next - ** record is written to the following sector (leaving a gap in the file - ** that will be implicitly filled in by the OS). - ** - ** However it has been discovered that on some systems this pattern can - ** be significantly slower than contiguously writing data to the file, - ** even if that means explicitly writing data to the block of - ** (JOURNAL_HDR_SZ - 28) bytes that will not be used. So that is what - ** is done. - ** - ** The loop is required here in case the sector-size is larger than the - ** database page size. Since the zHeader buffer is only Pager.pageSize - ** bytes in size, more than one call to sqlite3OsWrite() may be required - ** to populate the entire journal header sector. - */ - for(nWrite=0; rc==SQLITE_OK&&nWritejournalHdr, nHeader)) - rc = sqlite3OsWrite(pPager->jfd, zHeader, nHeader, pPager->journalOff); - assert( pPager->journalHdr <= pPager->journalOff ); - pPager->journalOff += nHeader; - } - - return rc; -} - -/* -** The journal file must be open when this is called. A journal header file -** (JOURNAL_HDR_SZ bytes) is read from the current location in the journal -** file. The current location in the journal file is given by -** pPager->journalOff. See comments above function writeJournalHdr() for -** a description of the journal header format. -** -** If the header is read successfully, *pNRec is set to the number of -** page records following this header and *pDbSize is set to the size of the -** database before the transaction began, in pages. Also, pPager->cksumInit -** is set to the value read from the journal header. SQLITE_OK is returned -** in this case. -** -** If the journal header file appears to be corrupted, SQLITE_DONE is -** returned and *pNRec and *PDbSize are undefined. If JOURNAL_HDR_SZ bytes -** cannot be read from the journal file an error code is returned. -*/ -static int readJournalHdr( - Pager *pPager, /* Pager object */ - int isHot, - i64 journalSize, /* Size of the open journal file in bytes */ - u32 *pNRec, /* OUT: Value read from the nRec field */ - u32 *pDbSize /* OUT: Value of original database size field */ -){ - int rc; /* Return code */ - unsigned char aMagic[8]; /* A buffer to hold the magic header */ - i64 iHdrOff; /* Offset of journal header being read */ - - assert( isOpen(pPager->jfd) ); /* Journal file must be open. */ - - /* Advance Pager.journalOff to the start of the next sector. If the - ** journal file is too small for there to be a header stored at this - ** point, return SQLITE_DONE. - */ - pPager->journalOff = journalHdrOffset(pPager); - if( pPager->journalOff+JOURNAL_HDR_SZ(pPager) > journalSize ){ - return SQLITE_DONE; - } - iHdrOff = pPager->journalOff; - - /* Read in the first 8 bytes of the journal header. If they do not match - ** the magic string found at the start of each journal header, return - ** SQLITE_DONE. If an IO error occurs, return an error code. Otherwise, - ** proceed. - */ - if( isHot || iHdrOff!=pPager->journalHdr ){ - rc = sqlite3OsRead(pPager->jfd, aMagic, sizeof(aMagic), iHdrOff); - if( rc ){ - return rc; - } - if( memcmp(aMagic, aJournalMagic, sizeof(aMagic))!=0 ){ - return SQLITE_DONE; - } - } - - /* Read the first three 32-bit fields of the journal header: The nRec - ** field, the checksum-initializer and the database size at the start - ** of the transaction. Return an error code if anything goes wrong. - */ - if( SQLITE_OK!=(rc = read32bits(pPager->jfd, iHdrOff+8, pNRec)) - || SQLITE_OK!=(rc = read32bits(pPager->jfd, iHdrOff+12, &pPager->cksumInit)) - || SQLITE_OK!=(rc = read32bits(pPager->jfd, iHdrOff+16, pDbSize)) - ){ - return rc; - } - - if( pPager->journalOff==0 ){ - u32 iPageSize; /* Page-size field of journal header */ - u32 iSectorSize; /* Sector-size field of journal header */ - - /* Read the page-size and sector-size journal header fields. */ - if( SQLITE_OK!=(rc = read32bits(pPager->jfd, iHdrOff+20, &iSectorSize)) - || SQLITE_OK!=(rc = read32bits(pPager->jfd, iHdrOff+24, &iPageSize)) - ){ - return rc; - } - - /* Versions of SQLite prior to 3.5.8 set the page-size field of the - ** journal header to zero. In this case, assume that the Pager.pageSize - ** variable is already set to the correct page size. - */ - if( iPageSize==0 ){ - iPageSize = pPager->pageSize; - } - - /* Check that the values read from the page-size and sector-size fields - ** are within range. To be 'in range', both values need to be a power - ** of two greater than or equal to 512 or 32, and not greater than their - ** respective compile time maximum limits. - */ - if( iPageSize<512 || iSectorSize<32 - || iPageSize>SQLITE_MAX_PAGE_SIZE || iSectorSize>MAX_SECTOR_SIZE - || ((iPageSize-1)&iPageSize)!=0 || ((iSectorSize-1)&iSectorSize)!=0 - ){ - /* If the either the page-size or sector-size in the journal-header is - ** invalid, then the process that wrote the journal-header must have - ** crashed before the header was synced. In this case stop reading - ** the journal file here. - */ - return SQLITE_DONE; - } - - /* Update the page-size to match the value read from the journal. - ** Use a testcase() macro to make sure that malloc failure within - ** PagerSetPagesize() is tested. - */ - rc = sqlite3PagerSetPagesize(pPager, &iPageSize, -1); - testcase( rc!=SQLITE_OK ); - - /* Update the assumed sector-size to match the value used by - ** the process that created this journal. If this journal was - ** created by a process other than this one, then this routine - ** is being called from within pager_playback(). The local value - ** of Pager.sectorSize is restored at the end of that routine. - */ - pPager->sectorSize = iSectorSize; - } - - pPager->journalOff += JOURNAL_HDR_SZ(pPager); - return rc; -} - - -/* -** Write the supplied master journal name into the journal file for pager -** pPager at the current location. The master journal name must be the last -** thing written to a journal file. If the pager is in full-sync mode, the -** journal file descriptor is advanced to the next sector boundary before -** anything is written. The format is: -** -** + 4 bytes: PAGER_MJ_PGNO. -** + N bytes: Master journal filename in utf-8. -** + 4 bytes: N (length of master journal name in bytes, no nul-terminator). -** + 4 bytes: Master journal name checksum. -** + 8 bytes: aJournalMagic[]. -** -** The master journal page checksum is the sum of the bytes in the master -** journal name, where each byte is interpreted as a signed 8-bit integer. -** -** If zMaster is a NULL pointer (occurs for a single database transaction), -** this call is a no-op. -*/ -static int writeMasterJournal(Pager *pPager, const char *zMaster){ - int rc; /* Return code */ - int nMaster; /* Length of string zMaster */ - i64 iHdrOff; /* Offset of header in journal file */ - i64 jrnlSize; /* Size of journal file on disk */ - u32 cksum = 0; /* Checksum of string zMaster */ - - assert( pPager->setMaster==0 ); - assert( !pagerUseWal(pPager) ); - - if( !zMaster - || pPager->journalMode==PAGER_JOURNALMODE_MEMORY - || pPager->journalMode==PAGER_JOURNALMODE_OFF - ){ - return SQLITE_OK; - } - pPager->setMaster = 1; - assert( isOpen(pPager->jfd) ); - assert( pPager->journalHdr <= pPager->journalOff ); - - /* Calculate the length in bytes and the checksum of zMaster */ - for(nMaster=0; zMaster[nMaster]; nMaster++){ - cksum += zMaster[nMaster]; - } - - /* If in full-sync mode, advance to the next disk sector before writing - ** the master journal name. This is in case the previous page written to - ** the journal has already been synced. - */ - if( pPager->fullSync ){ - pPager->journalOff = journalHdrOffset(pPager); - } - iHdrOff = pPager->journalOff; - - /* Write the master journal data to the end of the journal file. If - ** an error occurs, return the error code to the caller. - */ - if( (0 != (rc = write32bits(pPager->jfd, iHdrOff, PAGER_MJ_PGNO(pPager)))) - || (0 != (rc = sqlite3OsWrite(pPager->jfd, zMaster, nMaster, iHdrOff+4))) - || (0 != (rc = write32bits(pPager->jfd, iHdrOff+4+nMaster, nMaster))) - || (0 != (rc = write32bits(pPager->jfd, iHdrOff+4+nMaster+4, cksum))) - || (0 != (rc = sqlite3OsWrite(pPager->jfd, aJournalMagic, 8, iHdrOff+4+nMaster+8))) - ){ - return rc; - } - pPager->journalOff += (nMaster+20); - - /* If the pager is in peristent-journal mode, then the physical - ** journal-file may extend past the end of the master-journal name - ** and 8 bytes of magic data just written to the file. This is - ** dangerous because the code to rollback a hot-journal file - ** will not be able to find the master-journal name to determine - ** whether or not the journal is hot. - ** - ** Easiest thing to do in this scenario is to truncate the journal - ** file to the required size. - */ - if( SQLITE_OK==(rc = sqlite3OsFileSize(pPager->jfd, &jrnlSize)) - && jrnlSize>pPager->journalOff - ){ - rc = sqlite3OsTruncate(pPager->jfd, pPager->journalOff); - } - return rc; -} - -/* -** Find a page in the hash table given its page number. Return -** a pointer to the page or NULL if the requested page is not -** already in memory. -*/ -static PgHdr *pager_lookup(Pager *pPager, Pgno pgno){ - PgHdr *p; /* Return value */ - - /* It is not possible for a call to PcacheFetch() with createFlag==0 to - ** fail, since no attempt to allocate dynamic memory will be made. - */ - (void)sqlite3PcacheFetch(pPager->pPCache, pgno, 0, &p); - return p; -} - -/* -** Discard the entire contents of the in-memory page-cache. -*/ -static void pager_reset(Pager *pPager){ - sqlite3BackupRestart(pPager->pBackup); - sqlite3PcacheClear(pPager->pPCache); -} - -/* -** Free all structures in the Pager.aSavepoint[] array and set both -** Pager.aSavepoint and Pager.nSavepoint to zero. Close the sub-journal -** if it is open and the pager is not in exclusive mode. -*/ -static void releaseAllSavepoints(Pager *pPager){ - int ii; /* Iterator for looping through Pager.aSavepoint */ - for(ii=0; iinSavepoint; ii++){ - sqlite3BitvecDestroy(pPager->aSavepoint[ii].pInSavepoint); - } - if( !pPager->exclusiveMode || sqlite3IsMemJournal(pPager->sjfd) ){ - sqlite3OsClose(pPager->sjfd); - } - sqlite3_free(pPager->aSavepoint); - pPager->aSavepoint = 0; - pPager->nSavepoint = 0; - pPager->nSubRec = 0; -} - -/* -** Set the bit number pgno in the PagerSavepoint.pInSavepoint -** bitvecs of all open savepoints. Return SQLITE_OK if successful -** or SQLITE_NOMEM if a malloc failure occurs. -*/ -static int addToSavepointBitvecs(Pager *pPager, Pgno pgno){ - int ii; /* Loop counter */ - int rc = SQLITE_OK; /* Result code */ - - for(ii=0; iinSavepoint; ii++){ - PagerSavepoint *p = &pPager->aSavepoint[ii]; - if( pgno<=p->nOrig ){ - rc |= sqlite3BitvecSet(p->pInSavepoint, pgno); - testcase( rc==SQLITE_NOMEM ); - assert( rc==SQLITE_OK || rc==SQLITE_NOMEM ); - } - } - return rc; -} - -/* -** This function is a no-op if the pager is in exclusive mode and not -** in the ERROR state. Otherwise, it switches the pager to PAGER_OPEN -** state. -** -** If the pager is not in exclusive-access mode, the database file is -** completely unlocked. If the file is unlocked and the file-system does -** not exhibit the UNDELETABLE_WHEN_OPEN property, the journal file is -** closed (if it is open). -** -** If the pager is in ERROR state when this function is called, the -** contents of the pager cache are discarded before switching back to -** the OPEN state. Regardless of whether the pager is in exclusive-mode -** or not, any journal file left in the file-system will be treated -** as a hot-journal and rolled back the next time a read-transaction -** is opened (by this or by any other connection). -*/ -static void pager_unlock(Pager *pPager){ - - assert( pPager->eState==PAGER_READER - || pPager->eState==PAGER_OPEN - || pPager->eState==PAGER_ERROR - ); - - sqlite3BitvecDestroy(pPager->pInJournal); - pPager->pInJournal = 0; - releaseAllSavepoints(pPager); - - if( pagerUseWal(pPager) ){ - assert( !isOpen(pPager->jfd) ); - sqlite3WalEndReadTransaction(pPager->pWal); - pPager->eState = PAGER_OPEN; - }else if( !pPager->exclusiveMode ){ - int rc; /* Error code returned by pagerUnlockDb() */ - int iDc = isOpen(pPager->fd)?sqlite3OsDeviceCharacteristics(pPager->fd):0; - - /* If the operating system support deletion of open files, then - ** close the journal file when dropping the database lock. Otherwise - ** another connection with journal_mode=delete might delete the file - ** out from under us. - */ - assert( (PAGER_JOURNALMODE_MEMORY & 5)!=1 ); - assert( (PAGER_JOURNALMODE_OFF & 5)!=1 ); - assert( (PAGER_JOURNALMODE_WAL & 5)!=1 ); - assert( (PAGER_JOURNALMODE_DELETE & 5)!=1 ); - assert( (PAGER_JOURNALMODE_TRUNCATE & 5)==1 ); - assert( (PAGER_JOURNALMODE_PERSIST & 5)==1 ); - if( 0==(iDc & SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN) - || 1!=(pPager->journalMode & 5) - ){ - sqlite3OsClose(pPager->jfd); - } - - /* If the pager is in the ERROR state and the call to unlock the database - ** file fails, set the current lock to UNKNOWN_LOCK. See the comment - ** above the #define for UNKNOWN_LOCK for an explanation of why this - ** is necessary. - */ - rc = pagerUnlockDb(pPager, NO_LOCK); - if( rc!=SQLITE_OK && pPager->eState==PAGER_ERROR ){ - pPager->eLock = UNKNOWN_LOCK; - } - - /* The pager state may be changed from PAGER_ERROR to PAGER_OPEN here - ** without clearing the error code. This is intentional - the error - ** code is cleared and the cache reset in the block below. - */ - assert( pPager->errCode || pPager->eState!=PAGER_ERROR ); - pPager->changeCountDone = 0; - pPager->eState = PAGER_OPEN; - } - - /* If Pager.errCode is set, the contents of the pager cache cannot be - ** trusted. Now that there are no outstanding references to the pager, - ** it can safely move back to PAGER_OPEN state. This happens in both - ** normal and exclusive-locking mode. - */ - if( pPager->errCode ){ - assert( !MEMDB ); - pager_reset(pPager); - pPager->changeCountDone = pPager->tempFile; - pPager->eState = PAGER_OPEN; - pPager->errCode = SQLITE_OK; - } - - pPager->journalOff = 0; - pPager->journalHdr = 0; - pPager->setMaster = 0; -} - -/* -** This function is called whenever an IOERR or FULL error that requires -** the pager to transition into the ERROR state may ahve occurred. -** The first argument is a pointer to the pager structure, the second -** the error-code about to be returned by a pager API function. The -** value returned is a copy of the second argument to this function. -** -** If the second argument is SQLITE_FULL, SQLITE_IOERR or one of the -** IOERR sub-codes, the pager enters the ERROR state and the error code -** is stored in Pager.errCode. While the pager remains in the ERROR state, -** all major API calls on the Pager will immediately return Pager.errCode. -** -** The ERROR state indicates that the contents of the pager-cache -** cannot be trusted. This state can be cleared by completely discarding -** the contents of the pager-cache. If a transaction was active when -** the persistent error occurred, then the rollback journal may need -** to be replayed to restore the contents of the database file (as if -** it were a hot-journal). -*/ -static int pager_error(Pager *pPager, int rc){ - int rc2 = rc & 0xff; - assert( rc==SQLITE_OK || !MEMDB ); - assert( - pPager->errCode==SQLITE_FULL || - pPager->errCode==SQLITE_OK || - (pPager->errCode & 0xff)==SQLITE_IOERR - ); - if( rc2==SQLITE_FULL || rc2==SQLITE_IOERR ){ - pPager->errCode = rc; - pPager->eState = PAGER_ERROR; - } - return rc; -} - -/* -** This routine ends a transaction. A transaction is usually ended by -** either a COMMIT or a ROLLBACK operation. This routine may be called -** after rollback of a hot-journal, or if an error occurs while opening -** the journal file or writing the very first journal-header of a -** database transaction. -** -** This routine is never called in PAGER_ERROR state. If it is called -** in PAGER_NONE or PAGER_SHARED state and the lock held is less -** exclusive than a RESERVED lock, it is a no-op. -** -** Otherwise, any active savepoints are released. -** -** If the journal file is open, then it is "finalized". Once a journal -** file has been finalized it is not possible to use it to roll back a -** transaction. Nor will it be considered to be a hot-journal by this -** or any other database connection. Exactly how a journal is finalized -** depends on whether or not the pager is running in exclusive mode and -** the current journal-mode (Pager.journalMode value), as follows: -** -** journalMode==MEMORY -** Journal file descriptor is simply closed. This destroys an -** in-memory journal. -** -** journalMode==TRUNCATE -** Journal file is truncated to zero bytes in size. -** -** journalMode==PERSIST -** The first 28 bytes of the journal file are zeroed. This invalidates -** the first journal header in the file, and hence the entire journal -** file. An invalid journal file cannot be rolled back. -** -** journalMode==DELETE -** The journal file is closed and deleted using sqlite3OsDelete(). -** -** If the pager is running in exclusive mode, this method of finalizing -** the journal file is never used. Instead, if the journalMode is -** DELETE and the pager is in exclusive mode, the method described under -** journalMode==PERSIST is used instead. -** -** After the journal is finalized, the pager moves to PAGER_READER state. -** If running in non-exclusive rollback mode, the lock on the file is -** downgraded to a SHARED_LOCK. -** -** SQLITE_OK is returned if no error occurs. If an error occurs during -** any of the IO operations to finalize the journal file or unlock the -** database then the IO error code is returned to the user. If the -** operation to finalize the journal file fails, then the code still -** tries to unlock the database file if not in exclusive mode. If the -** unlock operation fails as well, then the first error code related -** to the first error encountered (the journal finalization one) is -** returned. -*/ -static int pager_end_transaction(Pager *pPager, int hasMaster){ - int rc = SQLITE_OK; /* Error code from journal finalization operation */ - int rc2 = SQLITE_OK; /* Error code from db file unlock operation */ - - /* Do nothing if the pager does not have an open write transaction - ** or at least a RESERVED lock. This function may be called when there - ** is no write-transaction active but a RESERVED or greater lock is - ** held under two circumstances: - ** - ** 1. After a successful hot-journal rollback, it is called with - ** eState==PAGER_NONE and eLock==EXCLUSIVE_LOCK. - ** - ** 2. If a connection with locking_mode=exclusive holding an EXCLUSIVE - ** lock switches back to locking_mode=normal and then executes a - ** read-transaction, this function is called with eState==PAGER_READER - ** and eLock==EXCLUSIVE_LOCK when the read-transaction is closed. - */ - assert( assert_pager_state(pPager) ); - assert( pPager->eState!=PAGER_ERROR ); - if( pPager->eStateeLockjfd) || pPager->pInJournal==0 ); - if( isOpen(pPager->jfd) ){ - assert( !pagerUseWal(pPager) ); - - /* Finalize the journal file. */ - if( sqlite3IsMemJournal(pPager->jfd) ){ - assert( pPager->journalMode==PAGER_JOURNALMODE_MEMORY ); - sqlite3OsClose(pPager->jfd); - }else if( pPager->journalMode==PAGER_JOURNALMODE_TRUNCATE ){ - if( pPager->journalOff==0 ){ - rc = SQLITE_OK; - }else{ - rc = sqlite3OsTruncate(pPager->jfd, 0); - } - pPager->journalOff = 0; - }else if( pPager->journalMode==PAGER_JOURNALMODE_PERSIST - || (pPager->exclusiveMode && pPager->journalMode!=PAGER_JOURNALMODE_WAL) - ){ - rc = zeroJournalHdr(pPager, hasMaster); - pPager->journalOff = 0; - }else{ - /* This branch may be executed with Pager.journalMode==MEMORY if - ** a hot-journal was just rolled back. In this case the journal - ** file should be closed and deleted. If this connection writes to - ** the database file, it will do so using an in-memory journal. - */ - assert( pPager->journalMode==PAGER_JOURNALMODE_DELETE - || pPager->journalMode==PAGER_JOURNALMODE_MEMORY - || pPager->journalMode==PAGER_JOURNALMODE_WAL - ); - sqlite3OsClose(pPager->jfd); - if( !pPager->tempFile ){ - rc = sqlite3OsDelete(pPager->pVfs, pPager->zJournal, 0); - } - } - } - -#ifdef SQLITE_CHECK_PAGES - sqlite3PcacheIterateDirty(pPager->pPCache, pager_set_pagehash); - if( pPager->dbSize==0 && sqlite3PcacheRefCount(pPager->pPCache)>0 ){ - PgHdr *p = pager_lookup(pPager, 1); - if( p ){ - p->pageHash = 0; - sqlite3PagerUnref(p); - } - } -#endif - - sqlite3BitvecDestroy(pPager->pInJournal); - pPager->pInJournal = 0; - pPager->nRec = 0; - sqlite3PcacheCleanAll(pPager->pPCache); - sqlite3PcacheTruncate(pPager->pPCache, pPager->dbSize); - - if( pagerUseWal(pPager) ){ - /* Drop the WAL write-lock, if any. Also, if the connection was in - ** locking_mode=exclusive mode but is no longer, drop the EXCLUSIVE - ** lock held on the database file. - */ - rc2 = sqlite3WalEndWriteTransaction(pPager->pWal); - assert( rc2==SQLITE_OK ); - } - if( !pPager->exclusiveMode - && (!pagerUseWal(pPager) || sqlite3WalExclusiveMode(pPager->pWal, 0)) - ){ - rc2 = pagerUnlockDb(pPager, SHARED_LOCK); - pPager->changeCountDone = 0; - } - pPager->eState = PAGER_READER; - pPager->setMaster = 0; - - return (rc==SQLITE_OK?rc2:rc); -} - -/* -** Execute a rollback if a transaction is active and unlock the -** database file. -** -** If the pager has already entered the ERROR state, do not attempt -** the rollback at this time. Instead, pager_unlock() is called. The -** call to pager_unlock() will discard all in-memory pages, unlock -** the database file and move the pager back to OPEN state. If this -** means that there is a hot-journal left in the file-system, the next -** connection to obtain a shared lock on the pager (which may be this one) -** will roll it back. -** -** If the pager has not already entered the ERROR state, but an IO or -** malloc error occurs during a rollback, then this will itself cause -** the pager to enter the ERROR state. Which will be cleared by the -** call to pager_unlock(), as described above. -*/ -static void pagerUnlockAndRollback(Pager *pPager){ - if( pPager->eState!=PAGER_ERROR && pPager->eState!=PAGER_OPEN ){ - assert( assert_pager_state(pPager) ); - if( pPager->eState>=PAGER_WRITER_LOCKED ){ - sqlite3BeginBenignMalloc(); - sqlite3PagerRollback(pPager); - sqlite3EndBenignMalloc(); - }else if( !pPager->exclusiveMode ){ - assert( pPager->eState==PAGER_READER ); - pager_end_transaction(pPager, 0); - } - } - pager_unlock(pPager); -} - -/* -** Parameter aData must point to a buffer of pPager->pageSize bytes -** of data. Compute and return a checksum based ont the contents of the -** page of data and the current value of pPager->cksumInit. -** -** This is not a real checksum. It is really just the sum of the -** random initial value (pPager->cksumInit) and every 200th byte -** of the page data, starting with byte offset (pPager->pageSize%200). -** Each byte is interpreted as an 8-bit unsigned integer. -** -** Changing the formula used to compute this checksum results in an -** incompatible journal file format. -** -** If journal corruption occurs due to a power failure, the most likely -** scenario is that one end or the other of the record will be changed. -** It is much less likely that the two ends of the journal record will be -** correct and the middle be corrupt. Thus, this "checksum" scheme, -** though fast and simple, catches the mostly likely kind of corruption. -*/ -static u32 pager_cksum(Pager *pPager, const u8 *aData){ - u32 cksum = pPager->cksumInit; /* Checksum value to return */ - int i = pPager->pageSize-200; /* Loop counter */ - while( i>0 ){ - cksum += aData[i]; - i -= 200; - } - return cksum; -} - -/* -** Report the current page size and number of reserved bytes back -** to the codec. -*/ -#ifdef SQLITE_HAS_CODEC -static void pagerReportSize(Pager *pPager){ - if( pPager->xCodecSizeChng ){ - pPager->xCodecSizeChng(pPager->pCodec, pPager->pageSize, - (int)pPager->nReserve); - } -} -#else -# define pagerReportSize(X) /* No-op if we do not support a codec */ -#endif - -/* -** Read a single page from either the journal file (if isMainJrnl==1) or -** from the sub-journal (if isMainJrnl==0) and playback that page. -** The page begins at offset *pOffset into the file. The *pOffset -** value is increased to the start of the next page in the journal. -** -** The main rollback journal uses checksums - the statement journal does -** not. -** -** If the page number of the page record read from the (sub-)journal file -** is greater than the current value of Pager.dbSize, then playback is -** skipped and SQLITE_OK is returned. -** -** If pDone is not NULL, then it is a record of pages that have already -** been played back. If the page at *pOffset has already been played back -** (if the corresponding pDone bit is set) then skip the playback. -** Make sure the pDone bit corresponding to the *pOffset page is set -** prior to returning. -** -** If the page record is successfully read from the (sub-)journal file -** and played back, then SQLITE_OK is returned. If an IO error occurs -** while reading the record from the (sub-)journal file or while writing -** to the database file, then the IO error code is returned. If data -** is successfully read from the (sub-)journal file but appears to be -** corrupted, SQLITE_DONE is returned. Data is considered corrupted in -** two circumstances: -** -** * If the record page-number is illegal (0 or PAGER_MJ_PGNO), or -** * If the record is being rolled back from the main journal file -** and the checksum field does not match the record content. -** -** Neither of these two scenarios are possible during a savepoint rollback. -** -** If this is a savepoint rollback, then memory may have to be dynamically -** allocated by this function. If this is the case and an allocation fails, -** SQLITE_NOMEM is returned. -*/ -static int pager_playback_one_page( - Pager *pPager, /* The pager being played back */ - i64 *pOffset, /* Offset of record to playback */ - Bitvec *pDone, /* Bitvec of pages already played back */ - int isMainJrnl, /* 1 -> main journal. 0 -> sub-journal. */ - int isSavepnt /* True for a savepoint rollback */ -){ - int rc; - PgHdr *pPg; /* An existing page in the cache */ - Pgno pgno; /* The page number of a page in journal */ - u32 cksum; /* Checksum used for sanity checking */ - char *aData; /* Temporary storage for the page */ - sqlite3_file *jfd; /* The file descriptor for the journal file */ - int isSynced; /* True if journal page is synced */ - - assert( (isMainJrnl&~1)==0 ); /* isMainJrnl is 0 or 1 */ - assert( (isSavepnt&~1)==0 ); /* isSavepnt is 0 or 1 */ - assert( isMainJrnl || pDone ); /* pDone always used on sub-journals */ - assert( isSavepnt || pDone==0 ); /* pDone never used on non-savepoint */ - - aData = pPager->pTmpSpace; - assert( aData ); /* Temp storage must have already been allocated */ - assert( pagerUseWal(pPager)==0 || (!isMainJrnl && isSavepnt) ); - - /* Either the state is greater than PAGER_WRITER_CACHEMOD (a transaction - ** or savepoint rollback done at the request of the caller) or this is - ** a hot-journal rollback. If it is a hot-journal rollback, the pager - ** is in state OPEN and holds an EXCLUSIVE lock. Hot-journal rollback - ** only reads from the main journal, not the sub-journal. - */ - assert( pPager->eState>=PAGER_WRITER_CACHEMOD - || (pPager->eState==PAGER_OPEN && pPager->eLock==EXCLUSIVE_LOCK) - ); - assert( pPager->eState>=PAGER_WRITER_CACHEMOD || isMainJrnl ); - - /* Read the page number and page data from the journal or sub-journal - ** file. Return an error code to the caller if an IO error occurs. - */ - jfd = isMainJrnl ? pPager->jfd : pPager->sjfd; - rc = read32bits(jfd, *pOffset, &pgno); - if( rc!=SQLITE_OK ) return rc; - rc = sqlite3OsRead(jfd, (u8*)aData, pPager->pageSize, (*pOffset)+4); - if( rc!=SQLITE_OK ) return rc; - *pOffset += pPager->pageSize + 4 + isMainJrnl*4; - - /* Sanity checking on the page. This is more important that I originally - ** thought. If a power failure occurs while the journal is being written, - ** it could cause invalid data to be written into the journal. We need to - ** detect this invalid data (with high probability) and ignore it. - */ - if( pgno==0 || pgno==PAGER_MJ_PGNO(pPager) ){ - assert( !isSavepnt ); - return SQLITE_DONE; - } - if( pgno>(Pgno)pPager->dbSize || sqlite3BitvecTest(pDone, pgno) ){ - return SQLITE_OK; - } - if( isMainJrnl ){ - rc = read32bits(jfd, (*pOffset)-4, &cksum); - if( rc ) return rc; - if( !isSavepnt && pager_cksum(pPager, (u8*)aData)!=cksum ){ - return SQLITE_DONE; - } - } - - /* If this page has already been played by before during the current - ** rollback, then don't bother to play it back again. - */ - if( pDone && (rc = sqlite3BitvecSet(pDone, pgno))!=SQLITE_OK ){ - return rc; - } - - /* When playing back page 1, restore the nReserve setting - */ - if( pgno==1 && pPager->nReserve!=((u8*)aData)[20] ){ - pPager->nReserve = ((u8*)aData)[20]; - pagerReportSize(pPager); - } - - /* If the pager is in CACHEMOD state, then there must be a copy of this - ** page in the pager cache. In this case just update the pager cache, - ** not the database file. The page is left marked dirty in this case. - ** - ** An exception to the above rule: If the database is in no-sync mode - ** and a page is moved during an incremental vacuum then the page may - ** not be in the pager cache. Later: if a malloc() or IO error occurs - ** during a Movepage() call, then the page may not be in the cache - ** either. So the condition described in the above paragraph is not - ** assert()able. - ** - ** If in WRITER_DBMOD, WRITER_FINISHED or OPEN state, then we update the - ** pager cache if it exists and the main file. The page is then marked - ** not dirty. Since this code is only executed in PAGER_OPEN state for - ** a hot-journal rollback, it is guaranteed that the page-cache is empty - ** if the pager is in OPEN state. - ** - ** Ticket #1171: The statement journal might contain page content that is - ** different from the page content at the start of the transaction. - ** This occurs when a page is changed prior to the start of a statement - ** then changed again within the statement. When rolling back such a - ** statement we must not write to the original database unless we know - ** for certain that original page contents are synced into the main rollback - ** journal. Otherwise, a power loss might leave modified data in the - ** database file without an entry in the rollback journal that can - ** restore the database to its original form. Two conditions must be - ** met before writing to the database files. (1) the database must be - ** locked. (2) we know that the original page content is fully synced - ** in the main journal either because the page is not in cache or else - ** the page is marked as needSync==0. - ** - ** 2008-04-14: When attempting to vacuum a corrupt database file, it - ** is possible to fail a statement on a database that does not yet exist. - ** Do not attempt to write if database file has never been opened. - */ - if( pagerUseWal(pPager) ){ - pPg = 0; - }else{ - pPg = pager_lookup(pPager, pgno); - } - assert( pPg || !MEMDB ); - assert( pPager->eState!=PAGER_OPEN || pPg==0 ); - PAGERTRACE(("PLAYBACK %d page %d hash(%08x) %s\n", - PAGERID(pPager), pgno, pager_datahash(pPager->pageSize, (u8*)aData), - (isMainJrnl?"main-journal":"sub-journal") - )); - if( isMainJrnl ){ - isSynced = pPager->noSync || (*pOffset <= pPager->journalHdr); - }else{ - isSynced = (pPg==0 || 0==(pPg->flags & PGHDR_NEED_SYNC)); - } - if( isOpen(pPager->fd) - && (pPager->eState>=PAGER_WRITER_DBMOD || pPager->eState==PAGER_OPEN) - && isSynced - ){ - i64 ofst = (pgno-1)*(i64)pPager->pageSize; - testcase( !isSavepnt && pPg!=0 && (pPg->flags&PGHDR_NEED_SYNC)!=0 ); - assert( !pagerUseWal(pPager) ); - rc = sqlite3OsWrite(pPager->fd, (u8*)aData, pPager->pageSize, ofst); - if( pgno>pPager->dbFileSize ){ - pPager->dbFileSize = pgno; - } - if( pPager->pBackup ){ - CODEC1(pPager, aData, pgno, 3, rc=SQLITE_NOMEM); - sqlite3BackupUpdate(pPager->pBackup, pgno, (u8*)aData); - CODEC2(pPager, aData, pgno, 7, rc=SQLITE_NOMEM, aData); - } - }else if( !isMainJrnl && pPg==0 ){ - /* If this is a rollback of a savepoint and data was not written to - ** the database and the page is not in-memory, there is a potential - ** problem. When the page is next fetched by the b-tree layer, it - ** will be read from the database file, which may or may not be - ** current. - ** - ** There are a couple of different ways this can happen. All are quite - ** obscure. When running in synchronous mode, this can only happen - ** if the page is on the free-list at the start of the transaction, then - ** populated, then moved using sqlite3PagerMovepage(). - ** - ** The solution is to add an in-memory page to the cache containing - ** the data just read from the sub-journal. Mark the page as dirty - ** and if the pager requires a journal-sync, then mark the page as - ** requiring a journal-sync before it is written. - */ - assert( isSavepnt ); - assert( pPager->doNotSpill==0 ); - pPager->doNotSpill++; - rc = sqlite3PagerAcquire(pPager, pgno, &pPg, 1); - assert( pPager->doNotSpill==1 ); - pPager->doNotSpill--; - if( rc!=SQLITE_OK ) return rc; - pPg->flags &= ~PGHDR_NEED_READ; - sqlite3PcacheMakeDirty(pPg); - } - if( pPg ){ - /* No page should ever be explicitly rolled back that is in use, except - ** for page 1 which is held in use in order to keep the lock on the - ** database active. However such a page may be rolled back as a result - ** of an internal error resulting in an automatic call to - ** sqlite3PagerRollback(). - */ - void *pData; - pData = pPg->pData; - memcpy(pData, (u8*)aData, pPager->pageSize); - pPager->xReiniter(pPg); - if( isMainJrnl && (!isSavepnt || *pOffset<=pPager->journalHdr) ){ - /* If the contents of this page were just restored from the main - ** journal file, then its content must be as they were when the - ** transaction was first opened. In this case we can mark the page - ** as clean, since there will be no need to write it out to the - ** database. - ** - ** There is one exception to this rule. If the page is being rolled - ** back as part of a savepoint (or statement) rollback from an - ** unsynced portion of the main journal file, then it is not safe - ** to mark the page as clean. This is because marking the page as - ** clean will clear the PGHDR_NEED_SYNC flag. Since the page is - ** already in the journal file (recorded in Pager.pInJournal) and - ** the PGHDR_NEED_SYNC flag is cleared, if the page is written to - ** again within this transaction, it will be marked as dirty but - ** the PGHDR_NEED_SYNC flag will not be set. It could then potentially - ** be written out into the database file before its journal file - ** segment is synced. If a crash occurs during or following this, - ** database corruption may ensue. - */ - assert( !pagerUseWal(pPager) ); - sqlite3PcacheMakeClean(pPg); - } - pager_set_pagehash(pPg); - - /* If this was page 1, then restore the value of Pager.dbFileVers. - ** Do this before any decoding. */ - if( pgno==1 ){ - memcpy(&pPager->dbFileVers, &((u8*)pData)[24],sizeof(pPager->dbFileVers)); - } - - /* Decode the page just read from disk */ - CODEC1(pPager, pData, pPg->pgno, 3, rc=SQLITE_NOMEM); - sqlite3PcacheRelease(pPg); - } - return rc; -} - -/* -** Parameter zMaster is the name of a master journal file. A single journal -** file that referred to the master journal file has just been rolled back. -** This routine checks if it is possible to delete the master journal file, -** and does so if it is. -** -** Argument zMaster may point to Pager.pTmpSpace. So that buffer is not -** available for use within this function. -** -** When a master journal file is created, it is populated with the names -** of all of its child journals, one after another, formatted as utf-8 -** encoded text. The end of each child journal file is marked with a -** nul-terminator byte (0x00). i.e. the entire contents of a master journal -** file for a transaction involving two databases might be: -** -** "/home/bill/a.db-journal\x00/home/bill/b.db-journal\x00" -** -** A master journal file may only be deleted once all of its child -** journals have been rolled back. -** -** This function reads the contents of the master-journal file into -** memory and loops through each of the child journal names. For -** each child journal, it checks if: -** -** * if the child journal exists, and if so -** * if the child journal contains a reference to master journal -** file zMaster -** -** If a child journal can be found that matches both of the criteria -** above, this function returns without doing anything. Otherwise, if -** no such child journal can be found, file zMaster is deleted from -** the file-system using sqlite3OsDelete(). -** -** If an IO error within this function, an error code is returned. This -** function allocates memory by calling sqlite3Malloc(). If an allocation -** fails, SQLITE_NOMEM is returned. Otherwise, if no IO or malloc errors -** occur, SQLITE_OK is returned. -** -** TODO: This function allocates a single block of memory to load -** the entire contents of the master journal file. This could be -** a couple of kilobytes or so - potentially larger than the page -** size. -*/ -static int pager_delmaster(Pager *pPager, const char *zMaster){ - sqlite3_vfs *pVfs = pPager->pVfs; - int rc; /* Return code */ - sqlite3_file *pMaster; /* Malloc'd master-journal file descriptor */ - sqlite3_file *pJournal; /* Malloc'd child-journal file descriptor */ - char *zMasterJournal = 0; /* Contents of master journal file */ - i64 nMasterJournal; /* Size of master journal file */ - char *zJournal; /* Pointer to one journal within MJ file */ - char *zMasterPtr; /* Space to hold MJ filename from a journal file */ - int nMasterPtr; /* Amount of space allocated to zMasterPtr[] */ - - /* Allocate space for both the pJournal and pMaster file descriptors. - ** If successful, open the master journal file for reading. - */ - pMaster = (sqlite3_file *)sqlite3MallocZero(pVfs->szOsFile * 2); - pJournal = (sqlite3_file *)(((u8 *)pMaster) + pVfs->szOsFile); - if( !pMaster ){ - rc = SQLITE_NOMEM; - }else{ - const int flags = (SQLITE_OPEN_READONLY|SQLITE_OPEN_MASTER_JOURNAL); - rc = sqlite3OsOpen(pVfs, zMaster, pMaster, flags, 0); - } - if( rc!=SQLITE_OK ) goto delmaster_out; - - /* Load the entire master journal file into space obtained from - ** sqlite3_malloc() and pointed to by zMasterJournal. Also obtain - ** sufficient space (in zMasterPtr) to hold the names of master - ** journal files extracted from regular rollback-journals. - */ - rc = sqlite3OsFileSize(pMaster, &nMasterJournal); - if( rc!=SQLITE_OK ) goto delmaster_out; - nMasterPtr = pVfs->mxPathname+1; - zMasterJournal = sqlite3Malloc((int)nMasterJournal + nMasterPtr + 1); - if( !zMasterJournal ){ - rc = SQLITE_NOMEM; - goto delmaster_out; - } - zMasterPtr = &zMasterJournal[nMasterJournal+1]; - rc = sqlite3OsRead(pMaster, zMasterJournal, (int)nMasterJournal, 0); - if( rc!=SQLITE_OK ) goto delmaster_out; - zMasterJournal[nMasterJournal] = 0; - - zJournal = zMasterJournal; - while( (zJournal-zMasterJournal)pageSize bytes). -** If the file on disk is currently larger than nPage pages, then use the VFS -** xTruncate() method to truncate it. -** -** Or, it might might be the case that the file on disk is smaller than -** nPage pages. Some operating system implementations can get confused if -** you try to truncate a file to some size that is larger than it -** currently is, so detect this case and write a single zero byte to -** the end of the new file instead. -** -** If successful, return SQLITE_OK. If an IO error occurs while modifying -** the database file, return the error code to the caller. -*/ -static int pager_truncate(Pager *pPager, Pgno nPage){ - int rc = SQLITE_OK; - assert( pPager->eState!=PAGER_ERROR ); - assert( pPager->eState!=PAGER_READER ); - - if( isOpen(pPager->fd) - && (pPager->eState>=PAGER_WRITER_DBMOD || pPager->eState==PAGER_OPEN) - ){ - i64 currentSize, newSize; - int szPage = pPager->pageSize; - assert( pPager->eLock==EXCLUSIVE_LOCK ); - /* TODO: Is it safe to use Pager.dbFileSize here? */ - rc = sqlite3OsFileSize(pPager->fd, ¤tSize); - newSize = szPage*(i64)nPage; - if( rc==SQLITE_OK && currentSize!=newSize ){ - if( currentSize>newSize ){ - rc = sqlite3OsTruncate(pPager->fd, newSize); - }else{ - char *pTmp = pPager->pTmpSpace; - memset(pTmp, 0, szPage); - testcase( (newSize-szPage) < currentSize ); - testcase( (newSize-szPage) == currentSize ); - testcase( (newSize-szPage) > currentSize ); - rc = sqlite3OsWrite(pPager->fd, pTmp, szPage, newSize-szPage); - } - if( rc==SQLITE_OK ){ - pPager->dbFileSize = nPage; - } - } - } - return rc; -} - -/* -** Set the value of the Pager.sectorSize variable for the given -** pager based on the value returned by the xSectorSize method -** of the open database file. The sector size will be used used -** to determine the size and alignment of journal header and -** master journal pointers within created journal files. -** -** For temporary files the effective sector size is always 512 bytes. -** -** Otherwise, for non-temporary files, the effective sector size is -** the value returned by the xSectorSize() method rounded up to 32 if -** it is less than 32, or rounded down to MAX_SECTOR_SIZE if it -** is greater than MAX_SECTOR_SIZE. -*/ -static void setSectorSize(Pager *pPager){ - assert( isOpen(pPager->fd) || pPager->tempFile ); - - if( !pPager->tempFile ){ - /* Sector size doesn't matter for temporary files. Also, the file - ** may not have been opened yet, in which case the OsSectorSize() - ** call will segfault. - */ - pPager->sectorSize = sqlite3OsSectorSize(pPager->fd); - } - if( pPager->sectorSize<32 ){ - pPager->sectorSize = 512; - } - if( pPager->sectorSize>MAX_SECTOR_SIZE ){ - assert( MAX_SECTOR_SIZE>=512 ); - pPager->sectorSize = MAX_SECTOR_SIZE; - } -} - -/* -** Playback the journal and thus restore the database file to -** the state it was in before we started making changes. -** -** The journal file format is as follows: -** -** (1) 8 byte prefix. A copy of aJournalMagic[]. -** (2) 4 byte big-endian integer which is the number of valid page records -** in the journal. If this value is 0xffffffff, then compute the -** number of page records from the journal size. -** (3) 4 byte big-endian integer which is the initial value for the -** sanity checksum. -** (4) 4 byte integer which is the number of pages to truncate the -** database to during a rollback. -** (5) 4 byte big-endian integer which is the sector size. The header -** is this many bytes in size. -** (6) 4 byte big-endian integer which is the page size. -** (7) zero padding out to the next sector size. -** (8) Zero or more pages instances, each as follows: -** + 4 byte page number. -** + pPager->pageSize bytes of data. -** + 4 byte checksum -** -** When we speak of the journal header, we mean the first 7 items above. -** Each entry in the journal is an instance of the 8th item. -** -** Call the value from the second bullet "nRec". nRec is the number of -** valid page entries in the journal. In most cases, you can compute the -** value of nRec from the size of the journal file. But if a power -** failure occurred while the journal was being written, it could be the -** case that the size of the journal file had already been increased but -** the extra entries had not yet made it safely to disk. In such a case, -** the value of nRec computed from the file size would be too large. For -** that reason, we always use the nRec value in the header. -** -** If the nRec value is 0xffffffff it means that nRec should be computed -** from the file size. This value is used when the user selects the -** no-sync option for the journal. A power failure could lead to corruption -** in this case. But for things like temporary table (which will be -** deleted when the power is restored) we don't care. -** -** If the file opened as the journal file is not a well-formed -** journal file then all pages up to the first corrupted page are rolled -** back (or no pages if the journal header is corrupted). The journal file -** is then deleted and SQLITE_OK returned, just as if no corruption had -** been encountered. -** -** If an I/O or malloc() error occurs, the journal-file is not deleted -** and an error code is returned. -** -** The isHot parameter indicates that we are trying to rollback a journal -** that might be a hot journal. Or, it could be that the journal is -** preserved because of JOURNALMODE_PERSIST or JOURNALMODE_TRUNCATE. -** If the journal really is hot, reset the pager cache prior rolling -** back any content. If the journal is merely persistent, no reset is -** needed. -*/ -static int pager_playback(Pager *pPager, int isHot){ - sqlite3_vfs *pVfs = pPager->pVfs; - i64 szJ; /* Size of the journal file in bytes */ - u32 nRec; /* Number of Records in the journal */ - u32 u; /* Unsigned loop counter */ - Pgno mxPg = 0; /* Size of the original file in pages */ - int rc; /* Result code of a subroutine */ - int res = 1; /* Value returned by sqlite3OsAccess() */ - char *zMaster = 0; /* Name of master journal file if any */ - int needPagerReset; /* True to reset page prior to first page rollback */ - - /* Figure out how many records are in the journal. Abort early if - ** the journal is empty. - */ - assert( isOpen(pPager->jfd) ); - rc = sqlite3OsFileSize(pPager->jfd, &szJ); - if( rc!=SQLITE_OK ){ - goto end_playback; - } - - /* Read the master journal name from the journal, if it is present. - ** If a master journal file name is specified, but the file is not - ** present on disk, then the journal is not hot and does not need to be - ** played back. - ** - ** TODO: Technically the following is an error because it assumes that - ** buffer Pager.pTmpSpace is (mxPathname+1) bytes or larger. i.e. that - ** (pPager->pageSize >= pPager->pVfs->mxPathname+1). Using os_unix.c, - ** mxPathname is 512, which is the same as the minimum allowable value - ** for pageSize. - */ - zMaster = pPager->pTmpSpace; - rc = readMasterJournal(pPager->jfd, zMaster, pPager->pVfs->mxPathname+1); - if( rc==SQLITE_OK && zMaster[0] ){ - rc = sqlite3OsAccess(pVfs, zMaster, SQLITE_ACCESS_EXISTS, &res); - } - zMaster = 0; - if( rc!=SQLITE_OK || !res ){ - goto end_playback; - } - pPager->journalOff = 0; - needPagerReset = isHot; - - /* This loop terminates either when a readJournalHdr() or - ** pager_playback_one_page() call returns SQLITE_DONE or an IO error - ** occurs. - */ - while( 1 ){ - /* Read the next journal header from the journal file. If there are - ** not enough bytes left in the journal file for a complete header, or - ** it is corrupted, then a process must have failed while writing it. - ** This indicates nothing more needs to be rolled back. - */ - rc = readJournalHdr(pPager, isHot, szJ, &nRec, &mxPg); - if( rc!=SQLITE_OK ){ - if( rc==SQLITE_DONE ){ - rc = SQLITE_OK; - } - goto end_playback; - } - - /* If nRec is 0xffffffff, then this journal was created by a process - ** working in no-sync mode. This means that the rest of the journal - ** file consists of pages, there are no more journal headers. Compute - ** the value of nRec based on this assumption. - */ - if( nRec==0xffffffff ){ - assert( pPager->journalOff==JOURNAL_HDR_SZ(pPager) ); - nRec = (int)((szJ - JOURNAL_HDR_SZ(pPager))/JOURNAL_PG_SZ(pPager)); - } - - /* If nRec is 0 and this rollback is of a transaction created by this - ** process and if this is the final header in the journal, then it means - ** that this part of the journal was being filled but has not yet been - ** synced to disk. Compute the number of pages based on the remaining - ** size of the file. - ** - ** The third term of the test was added to fix ticket #2565. - ** When rolling back a hot journal, nRec==0 always means that the next - ** chunk of the journal contains zero pages to be rolled back. But - ** when doing a ROLLBACK and the nRec==0 chunk is the last chunk in - ** the journal, it means that the journal might contain additional - ** pages that need to be rolled back and that the number of pages - ** should be computed based on the journal file size. - */ - if( nRec==0 && !isHot && - pPager->journalHdr+JOURNAL_HDR_SZ(pPager)==pPager->journalOff ){ - nRec = (int)((szJ - pPager->journalOff) / JOURNAL_PG_SZ(pPager)); - } - - /* If this is the first header read from the journal, truncate the - ** database file back to its original size. - */ - if( pPager->journalOff==JOURNAL_HDR_SZ(pPager) ){ - rc = pager_truncate(pPager, mxPg); - if( rc!=SQLITE_OK ){ - goto end_playback; - } - pPager->dbSize = mxPg; - } - - /* Copy original pages out of the journal and back into the - ** database file and/or page cache. - */ - for(u=0; ujournalOff,0,1,0); - if( rc!=SQLITE_OK ){ - if( rc==SQLITE_DONE ){ - pPager->journalOff = szJ; - break; - }else if( rc==SQLITE_IOERR_SHORT_READ ){ - /* If the journal has been truncated, simply stop reading and - ** processing the journal. This might happen if the journal was - ** not completely written and synced prior to a crash. In that - ** case, the database should have never been written in the - ** first place so it is OK to simply abandon the rollback. */ - rc = SQLITE_OK; - goto end_playback; - }else{ - /* If we are unable to rollback, quit and return the error - ** code. This will cause the pager to enter the error state - ** so that no further harm will be done. Perhaps the next - ** process to come along will be able to rollback the database. - */ - goto end_playback; - } - } - } - } - /*NOTREACHED*/ - assert( 0 ); - -end_playback: - /* Following a rollback, the database file should be back in its original - ** state prior to the start of the transaction, so invoke the - ** SQLITE_FCNTL_DB_UNCHANGED file-control method to disable the - ** assertion that the transaction counter was modified. - */ - assert( - pPager->fd->pMethods==0 || - sqlite3OsFileControl(pPager->fd,SQLITE_FCNTL_DB_UNCHANGED,0)>=SQLITE_OK - ); - - /* If this playback is happening automatically as a result of an IO or - ** malloc error that occurred after the change-counter was updated but - ** before the transaction was committed, then the change-counter - ** modification may just have been reverted. If this happens in exclusive - ** mode, then subsequent transactions performed by the connection will not - ** update the change-counter at all. This may lead to cache inconsistency - ** problems for other processes at some point in the future. So, just - ** in case this has happened, clear the changeCountDone flag now. - */ - pPager->changeCountDone = pPager->tempFile; - - if( rc==SQLITE_OK ){ - zMaster = pPager->pTmpSpace; - rc = readMasterJournal(pPager->jfd, zMaster, pPager->pVfs->mxPathname+1); - testcase( rc!=SQLITE_OK ); - } - if( rc==SQLITE_OK - && (pPager->eState>=PAGER_WRITER_DBMOD || pPager->eState==PAGER_OPEN) - ){ - rc = sqlite3PagerSync(pPager); - } - if( rc==SQLITE_OK ){ - rc = pager_end_transaction(pPager, zMaster[0]!='\0'); - testcase( rc!=SQLITE_OK ); - } - if( rc==SQLITE_OK && zMaster[0] && res ){ - /* If there was a master journal and this routine will return success, - ** see if it is possible to delete the master journal. - */ - rc = pager_delmaster(pPager, zMaster); - testcase( rc!=SQLITE_OK ); - } - - /* The Pager.sectorSize variable may have been updated while rolling - ** back a journal created by a process with a different sector size - ** value. Reset it to the correct value for this process. - */ - setSectorSize(pPager); - return rc; -} - - -/* -** Read the content for page pPg out of the database file and into -** pPg->pData. A shared lock or greater must be held on the database -** file before this function is called. -** -** If page 1 is read, then the value of Pager.dbFileVers[] is set to -** the value read from the database file. -** -** If an IO error occurs, then the IO error is returned to the caller. -** Otherwise, SQLITE_OK is returned. -*/ -static int readDbPage(PgHdr *pPg){ - Pager *pPager = pPg->pPager; /* Pager object associated with page pPg */ - Pgno pgno = pPg->pgno; /* Page number to read */ - int rc = SQLITE_OK; /* Return code */ - int isInWal = 0; /* True if page is in log file */ - int pgsz = pPager->pageSize; /* Number of bytes to read */ - - assert( pPager->eState>=PAGER_READER && !MEMDB ); - assert( isOpen(pPager->fd) ); - - if( NEVER(!isOpen(pPager->fd)) ){ - assert( pPager->tempFile ); - memset(pPg->pData, 0, pPager->pageSize); - return SQLITE_OK; - } - - if( pagerUseWal(pPager) ){ - /* Try to pull the page from the write-ahead log. */ - rc = sqlite3WalRead(pPager->pWal, pgno, &isInWal, pgsz, pPg->pData); - } - if( rc==SQLITE_OK && !isInWal ){ - i64 iOffset = (pgno-1)*(i64)pPager->pageSize; - rc = sqlite3OsRead(pPager->fd, pPg->pData, pgsz, iOffset); - if( rc==SQLITE_IOERR_SHORT_READ ){ - rc = SQLITE_OK; - } - } - - if( pgno==1 ){ - if( rc ){ - /* If the read is unsuccessful, set the dbFileVers[] to something - ** that will never be a valid file version. dbFileVers[] is a copy - ** of bytes 24..39 of the database. Bytes 28..31 should always be - ** zero or the size of the database in page. Bytes 32..35 and 35..39 - ** should be page numbers which are never 0xffffffff. So filling - ** pPager->dbFileVers[] with all 0xff bytes should suffice. - ** - ** For an encrypted database, the situation is more complex: bytes - ** 24..39 of the database are white noise. But the probability of - ** white noising equaling 16 bytes of 0xff is vanishingly small so - ** we should still be ok. - */ - memset(pPager->dbFileVers, 0xff, sizeof(pPager->dbFileVers)); - }else{ - u8 *dbFileVers = &((u8*)pPg->pData)[24]; - memcpy(&pPager->dbFileVers, dbFileVers, sizeof(pPager->dbFileVers)); - } - } - CODEC1(pPager, pPg->pData, pgno, 3, rc = SQLITE_NOMEM); - - PAGER_INCR(sqlite3_pager_readdb_count); - PAGER_INCR(pPager->nRead); - IOTRACE(("PGIN %p %d\n", pPager, pgno)); - PAGERTRACE(("FETCH %d page %d hash(%08x)\n", - PAGERID(pPager), pgno, pager_pagehash(pPg))); - - return rc; -} - -/* -** Update the value of the change-counter at offsets 24 and 92 in -** the header and the sqlite version number at offset 96. -** -** This is an unconditional update. See also the pager_incr_changecounter() -** routine which only updates the change-counter if the update is actually -** needed, as determined by the pPager->changeCountDone state variable. -*/ -static void pager_write_changecounter(PgHdr *pPg){ - u32 change_counter; - - /* Increment the value just read and write it back to byte 24. */ - change_counter = sqlite3Get4byte((u8*)pPg->pPager->dbFileVers)+1; - put32bits(((char*)pPg->pData)+24, change_counter); - - /* Also store the SQLite version number in bytes 96..99 and in - ** bytes 92..95 store the change counter for which the version number - ** is valid. */ - put32bits(((char*)pPg->pData)+92, change_counter); - put32bits(((char*)pPg->pData)+96, SQLITE_VERSION_NUMBER); -} - -#ifndef SQLITE_OMIT_WAL -/* -** This function is invoked once for each page that has already been -** written into the log file when a WAL transaction is rolled back. -** Parameter iPg is the page number of said page. The pCtx argument -** is actually a pointer to the Pager structure. -** -** If page iPg is present in the cache, and has no outstanding references, -** it is discarded. Otherwise, if there are one or more outstanding -** references, the page content is reloaded from the database. If the -** attempt to reload content from the database is required and fails, -** return an SQLite error code. Otherwise, SQLITE_OK. -*/ -static int pagerUndoCallback(void *pCtx, Pgno iPg){ - int rc = SQLITE_OK; - Pager *pPager = (Pager *)pCtx; - PgHdr *pPg; - - pPg = sqlite3PagerLookup(pPager, iPg); - if( pPg ){ - if( sqlite3PcachePageRefcount(pPg)==1 ){ - sqlite3PcacheDrop(pPg); - }else{ - rc = readDbPage(pPg); - if( rc==SQLITE_OK ){ - pPager->xReiniter(pPg); - } - sqlite3PagerUnref(pPg); - } - } - - /* Normally, if a transaction is rolled back, any backup processes are - ** updated as data is copied out of the rollback journal and into the - ** database. This is not generally possible with a WAL database, as - ** rollback involves simply truncating the log file. Therefore, if one - ** or more frames have already been written to the log (and therefore - ** also copied into the backup databases) as part of this transaction, - ** the backups must be restarted. - */ - sqlite3BackupRestart(pPager->pBackup); - - return rc; -} - -/* -** This function is called to rollback a transaction on a WAL database. -*/ -static int pagerRollbackWal(Pager *pPager){ - int rc; /* Return Code */ - PgHdr *pList; /* List of dirty pages to revert */ - - /* For all pages in the cache that are currently dirty or have already - ** been written (but not committed) to the log file, do one of the - ** following: - ** - ** + Discard the cached page (if refcount==0), or - ** + Reload page content from the database (if refcount>0). - */ - pPager->dbSize = pPager->dbOrigSize; - rc = sqlite3WalUndo(pPager->pWal, pagerUndoCallback, (void *)pPager); - pList = sqlite3PcacheDirtyList(pPager->pPCache); - while( pList && rc==SQLITE_OK ){ - PgHdr *pNext = pList->pDirty; - rc = pagerUndoCallback((void *)pPager, pList->pgno); - pList = pNext; - } - - return rc; -} - -/* -** This function is a wrapper around sqlite3WalFrames(). As well as logging -** the contents of the list of pages headed by pList (connected by pDirty), -** this function notifies any active backup processes that the pages have -** changed. -** -** The list of pages passed into this routine is always sorted by page number. -** Hence, if page 1 appears anywhere on the list, it will be the first page. -*/ -static int pagerWalFrames( - Pager *pPager, /* Pager object */ - PgHdr *pList, /* List of frames to log */ - Pgno nTruncate, /* Database size after this commit */ - int isCommit, /* True if this is a commit */ - int syncFlags /* Flags to pass to OsSync() (or 0) */ -){ - int rc; /* Return code */ -#if defined(SQLITE_DEBUG) || defined(SQLITE_CHECK_PAGES) - PgHdr *p; /* For looping over pages */ -#endif - - assert( pPager->pWal ); - assert( pList ); -#ifdef SQLITE_DEBUG - /* Verify that the page list is in accending order */ - for(p=pList; p && p->pDirty; p=p->pDirty){ - assert( p->pgno < p->pDirty->pgno ); - } -#endif - - if( isCommit ){ - /* If a WAL transaction is being committed, there is no point in writing - ** any pages with page numbers greater than nTruncate into the WAL file. - ** They will never be read by any client. So remove them from the pDirty - ** list here. */ - PgHdr *p; - PgHdr **ppNext = &pList; - for(p=pList; (*ppNext = p); p=p->pDirty){ - if( p->pgno<=nTruncate ) ppNext = &p->pDirty; - } - assert( pList ); - } - - if( pList->pgno==1 ) pager_write_changecounter(pList); - rc = sqlite3WalFrames(pPager->pWal, - pPager->pageSize, pList, nTruncate, isCommit, syncFlags - ); - if( rc==SQLITE_OK && pPager->pBackup ){ - PgHdr *p; - for(p=pList; p; p=p->pDirty){ - sqlite3BackupUpdate(pPager->pBackup, p->pgno, (u8 *)p->pData); - } - } - -#ifdef SQLITE_CHECK_PAGES - pList = sqlite3PcacheDirtyList(pPager->pPCache); - for(p=pList; p; p=p->pDirty){ - pager_set_pagehash(p); - } -#endif - - return rc; -} - -/* -** Begin a read transaction on the WAL. -** -** This routine used to be called "pagerOpenSnapshot()" because it essentially -** makes a snapshot of the database at the current point in time and preserves -** that snapshot for use by the reader in spite of concurrently changes by -** other writers or checkpointers. -*/ -static int pagerBeginReadTransaction(Pager *pPager){ - int rc; /* Return code */ - int changed = 0; /* True if cache must be reset */ - - assert( pagerUseWal(pPager) ); - assert( pPager->eState==PAGER_OPEN || pPager->eState==PAGER_READER ); - - /* sqlite3WalEndReadTransaction() was not called for the previous - ** transaction in locking_mode=EXCLUSIVE. So call it now. If we - ** are in locking_mode=NORMAL and EndRead() was previously called, - ** the duplicate call is harmless. - */ - sqlite3WalEndReadTransaction(pPager->pWal); - - rc = sqlite3WalBeginReadTransaction(pPager->pWal, &changed); - if( rc!=SQLITE_OK || changed ){ - pager_reset(pPager); - } - - return rc; -} -#endif - -/* -** This function is called as part of the transition from PAGER_OPEN -** to PAGER_READER state to determine the size of the database file -** in pages (assuming the page size currently stored in Pager.pageSize). -** -** If no error occurs, SQLITE_OK is returned and the size of the database -** in pages is stored in *pnPage. Otherwise, an error code (perhaps -** SQLITE_IOERR_FSTAT) is returned and *pnPage is left unmodified. -*/ -static int pagerPagecount(Pager *pPager, Pgno *pnPage){ - Pgno nPage; /* Value to return via *pnPage */ - - /* Query the WAL sub-system for the database size. The WalDbsize() - ** function returns zero if the WAL is not open (i.e. Pager.pWal==0), or - ** if the database size is not available. The database size is not - ** available from the WAL sub-system if the log file is empty or - ** contains no valid committed transactions. - */ - assert( pPager->eState==PAGER_OPEN ); - assert( pPager->eLock>=SHARED_LOCK || pPager->noReadlock ); - nPage = sqlite3WalDbsize(pPager->pWal); - - /* If the database size was not available from the WAL sub-system, - ** determine it based on the size of the database file. If the size - ** of the database file is not an integer multiple of the page-size, - ** round down to the nearest page. Except, any file larger than 0 - ** bytes in size is considered to contain at least one page. - */ - if( nPage==0 ){ - i64 n = 0; /* Size of db file in bytes */ - assert( isOpen(pPager->fd) || pPager->tempFile ); - if( isOpen(pPager->fd) ){ - int rc = sqlite3OsFileSize(pPager->fd, &n); - if( rc!=SQLITE_OK ){ - return rc; - } - } - nPage = (Pgno)(n / pPager->pageSize); - if( nPage==0 && n>0 ){ - nPage = 1; - } - } - - /* If the current number of pages in the file is greater than the - ** configured maximum pager number, increase the allowed limit so - ** that the file can be read. - */ - if( nPage>pPager->mxPgno ){ - pPager->mxPgno = (Pgno)nPage; - } - - *pnPage = nPage; - return SQLITE_OK; -} - -#ifndef SQLITE_OMIT_WAL -/* -** Check if the *-wal file that corresponds to the database opened by pPager -** exists if the database is not empy, or verify that the *-wal file does -** not exist (by deleting it) if the database file is empty. -** -** If the database is not empty and the *-wal file exists, open the pager -** in WAL mode. If the database is empty or if no *-wal file exists and -** if no error occurs, make sure Pager.journalMode is not set to -** PAGER_JOURNALMODE_WAL. -** -** Return SQLITE_OK or an error code. -** -** The caller must hold a SHARED lock on the database file to call this -** function. Because an EXCLUSIVE lock on the db file is required to delete -** a WAL on a none-empty database, this ensures there is no race condition -** between the xAccess() below and an xDelete() being executed by some -** other connection. -*/ -static int pagerOpenWalIfPresent(Pager *pPager){ - int rc = SQLITE_OK; - assert( pPager->eState==PAGER_OPEN ); - assert( pPager->eLock>=SHARED_LOCK || pPager->noReadlock ); - - if( !pPager->tempFile ){ - int isWal; /* True if WAL file exists */ - Pgno nPage; /* Size of the database file */ - - rc = pagerPagecount(pPager, &nPage); - if( rc ) return rc; - if( nPage==0 ){ - rc = sqlite3OsDelete(pPager->pVfs, pPager->zWal, 0); - isWal = 0; - }else{ - rc = sqlite3OsAccess( - pPager->pVfs, pPager->zWal, SQLITE_ACCESS_EXISTS, &isWal - ); - } - if( rc==SQLITE_OK ){ - if( isWal ){ - testcase( sqlite3PcachePagecount(pPager->pPCache)==0 ); - rc = sqlite3PagerOpenWal(pPager, 0); - }else if( pPager->journalMode==PAGER_JOURNALMODE_WAL ){ - pPager->journalMode = PAGER_JOURNALMODE_DELETE; - } - } - } - return rc; -} -#endif - -/* -** Playback savepoint pSavepoint. Or, if pSavepoint==NULL, then playback -** the entire master journal file. The case pSavepoint==NULL occurs when -** a ROLLBACK TO command is invoked on a SAVEPOINT that is a transaction -** savepoint. -** -** When pSavepoint is not NULL (meaning a non-transaction savepoint is -** being rolled back), then the rollback consists of up to three stages, -** performed in the order specified: -** -** * Pages are played back from the main journal starting at byte -** offset PagerSavepoint.iOffset and continuing to -** PagerSavepoint.iHdrOffset, or to the end of the main journal -** file if PagerSavepoint.iHdrOffset is zero. -** -** * If PagerSavepoint.iHdrOffset is not zero, then pages are played -** back starting from the journal header immediately following -** PagerSavepoint.iHdrOffset to the end of the main journal file. -** -** * Pages are then played back from the sub-journal file, starting -** with the PagerSavepoint.iSubRec and continuing to the end of -** the journal file. -** -** Throughout the rollback process, each time a page is rolled back, the -** corresponding bit is set in a bitvec structure (variable pDone in the -** implementation below). This is used to ensure that a page is only -** rolled back the first time it is encountered in either journal. -** -** If pSavepoint is NULL, then pages are only played back from the main -** journal file. There is no need for a bitvec in this case. -** -** In either case, before playback commences the Pager.dbSize variable -** is reset to the value that it held at the start of the savepoint -** (or transaction). No page with a page-number greater than this value -** is played back. If one is encountered it is simply skipped. -*/ -static int pagerPlaybackSavepoint(Pager *pPager, PagerSavepoint *pSavepoint){ - i64 szJ; /* Effective size of the main journal */ - i64 iHdrOff; /* End of first segment of main-journal records */ - int rc = SQLITE_OK; /* Return code */ - Bitvec *pDone = 0; /* Bitvec to ensure pages played back only once */ - - assert( pPager->eState!=PAGER_ERROR ); - assert( pPager->eState>=PAGER_WRITER_LOCKED ); - - /* Allocate a bitvec to use to store the set of pages rolled back */ - if( pSavepoint ){ - pDone = sqlite3BitvecCreate(pSavepoint->nOrig); - if( !pDone ){ - return SQLITE_NOMEM; - } - } - - /* Set the database size back to the value it was before the savepoint - ** being reverted was opened. - */ - pPager->dbSize = pSavepoint ? pSavepoint->nOrig : pPager->dbOrigSize; - pPager->changeCountDone = pPager->tempFile; - - if( !pSavepoint && pagerUseWal(pPager) ){ - return pagerRollbackWal(pPager); - } - - /* Use pPager->journalOff as the effective size of the main rollback - ** journal. The actual file might be larger than this in - ** PAGER_JOURNALMODE_TRUNCATE or PAGER_JOURNALMODE_PERSIST. But anything - ** past pPager->journalOff is off-limits to us. - */ - szJ = pPager->journalOff; - assert( pagerUseWal(pPager)==0 || szJ==0 ); - - /* Begin by rolling back records from the main journal starting at - ** PagerSavepoint.iOffset and continuing to the next journal header. - ** There might be records in the main journal that have a page number - ** greater than the current database size (pPager->dbSize) but those - ** will be skipped automatically. Pages are added to pDone as they - ** are played back. - */ - if( pSavepoint && !pagerUseWal(pPager) ){ - iHdrOff = pSavepoint->iHdrOffset ? pSavepoint->iHdrOffset : szJ; - pPager->journalOff = pSavepoint->iOffset; - while( rc==SQLITE_OK && pPager->journalOffjournalOff, pDone, 1, 1); - } - assert( rc!=SQLITE_DONE ); - }else{ - pPager->journalOff = 0; - } - - /* Continue rolling back records out of the main journal starting at - ** the first journal header seen and continuing until the effective end - ** of the main journal file. Continue to skip out-of-range pages and - ** continue adding pages rolled back to pDone. - */ - while( rc==SQLITE_OK && pPager->journalOffjournalHdr+JOURNAL_HDR_SZ(pPager)==pPager->journalOff" - ** test is related to ticket #2565. See the discussion in the - ** pager_playback() function for additional information. - */ - if( nJRec==0 - && pPager->journalHdr+JOURNAL_HDR_SZ(pPager)==pPager->journalOff - ){ - nJRec = (u32)((szJ - pPager->journalOff)/JOURNAL_PG_SZ(pPager)); - } - for(ii=0; rc==SQLITE_OK && iijournalOffjournalOff, pDone, 1, 1); - } - assert( rc!=SQLITE_DONE ); - } - assert( rc!=SQLITE_OK || pPager->journalOff>=szJ ); - - /* Finally, rollback pages from the sub-journal. Page that were - ** previously rolled back out of the main journal (and are hence in pDone) - ** will be skipped. Out-of-range pages are also skipped. - */ - if( pSavepoint ){ - u32 ii; /* Loop counter */ - i64 offset = pSavepoint->iSubRec*(4+pPager->pageSize); - - if( pagerUseWal(pPager) ){ - rc = sqlite3WalSavepointUndo(pPager->pWal, pSavepoint->aWalData); - } - for(ii=pSavepoint->iSubRec; rc==SQLITE_OK && iinSubRec; ii++){ - assert( offset==ii*(4+pPager->pageSize) ); - rc = pager_playback_one_page(pPager, &offset, pDone, 0, 1); - } - assert( rc!=SQLITE_DONE ); - } - - sqlite3BitvecDestroy(pDone); - if( rc==SQLITE_OK ){ - pPager->journalOff = szJ; - } - - return rc; -} - -/* -** Change the maximum number of in-memory pages that are allowed. -*/ -void sqlite3PagerSetCachesize(Pager *pPager, int mxPage){ - sqlite3PcacheSetCachesize(pPager->pPCache, mxPage); -} - -/* -** Adjust the robustness of the database to damage due to OS crashes -** or power failures by changing the number of syncs()s when writing -** the rollback journal. There are three levels: -** -** OFF sqlite3OsSync() is never called. This is the default -** for temporary and transient files. -** -** NORMAL The journal is synced once before writes begin on the -** database. This is normally adequate protection, but -** it is theoretically possible, though very unlikely, -** that an inopertune power failure could leave the journal -** in a state which would cause damage to the database -** when it is rolled back. -** -** FULL The journal is synced twice before writes begin on the -** database (with some additional information - the nRec field -** of the journal header - being written in between the two -** syncs). If we assume that writing a -** single disk sector is atomic, then this mode provides -** assurance that the journal will not be corrupted to the -** point of causing damage to the database during rollback. -** -** The above is for a rollback-journal mode. For WAL mode, OFF continues -** to mean that no syncs ever occur. NORMAL means that the WAL is synced -** prior to the start of checkpoint and that the database file is synced -** at the conclusion of the checkpoint if the entire content of the WAL -** was written back into the database. But no sync operations occur for -** an ordinary commit in NORMAL mode with WAL. FULL means that the WAL -** file is synced following each commit operation, in addition to the -** syncs associated with NORMAL. -** -** Do not confuse synchronous=FULL with SQLITE_SYNC_FULL. The -** SQLITE_SYNC_FULL macro means to use the MacOSX-style full-fsync -** using fcntl(F_FULLFSYNC). SQLITE_SYNC_NORMAL means to do an -** ordinary fsync() call. There is no difference between SQLITE_SYNC_FULL -** and SQLITE_SYNC_NORMAL on platforms other than MacOSX. But the -** synchronous=FULL versus synchronous=NORMAL setting determines when -** the xSync primitive is called and is relevant to all platforms. -** -** Numeric values associated with these states are OFF==1, NORMAL=2, -** and FULL=3. -*/ -#ifndef SQLITE_OMIT_PAGER_PRAGMAS -void sqlite3PagerSetSafetyLevel( - Pager *pPager, /* The pager to set safety level for */ - int level, /* PRAGMA synchronous. 1=OFF, 2=NORMAL, 3=FULL */ - int bFullFsync, /* PRAGMA fullfsync */ - int bCkptFullFsync /* PRAGMA checkpoint_fullfsync */ -){ - assert( level>=1 && level<=3 ); - pPager->noSync = (level==1 || pPager->tempFile) ?1:0; - pPager->fullSync = (level==3 && !pPager->tempFile) ?1:0; - if( pPager->noSync ){ - pPager->syncFlags = 0; - pPager->ckptSyncFlags = 0; - }else if( bFullFsync ){ - pPager->syncFlags = SQLITE_SYNC_FULL; - pPager->ckptSyncFlags = SQLITE_SYNC_FULL; - }else if( bCkptFullFsync ){ - pPager->syncFlags = SQLITE_SYNC_NORMAL; - pPager->ckptSyncFlags = SQLITE_SYNC_FULL; - }else{ - pPager->syncFlags = SQLITE_SYNC_NORMAL; - pPager->ckptSyncFlags = SQLITE_SYNC_NORMAL; - } -} -#endif - -/* -** The following global variable is incremented whenever the library -** attempts to open a temporary file. This information is used for -** testing and analysis only. -*/ -#ifdef SQLITE_TEST -int sqlite3_opentemp_count = 0; -#endif - -/* -** Open a temporary file. -** -** Write the file descriptor into *pFile. Return SQLITE_OK on success -** or some other error code if we fail. The OS will automatically -** delete the temporary file when it is closed. -** -** The flags passed to the VFS layer xOpen() call are those specified -** by parameter vfsFlags ORed with the following: -** -** SQLITE_OPEN_READWRITE -** SQLITE_OPEN_CREATE -** SQLITE_OPEN_EXCLUSIVE -** SQLITE_OPEN_DELETEONCLOSE -*/ -static int pagerOpentemp( - Pager *pPager, /* The pager object */ - sqlite3_file *pFile, /* Write the file descriptor here */ - int vfsFlags /* Flags passed through to the VFS */ -){ - int rc; /* Return code */ - -#ifdef SQLITE_TEST - sqlite3_opentemp_count++; /* Used for testing and analysis only */ -#endif - - vfsFlags |= SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE | - SQLITE_OPEN_EXCLUSIVE | SQLITE_OPEN_DELETEONCLOSE; - rc = sqlite3OsOpen(pPager->pVfs, 0, pFile, vfsFlags, 0); - assert( rc!=SQLITE_OK || isOpen(pFile) ); - return rc; -} - -/* -** Set the busy handler function. -** -** The pager invokes the busy-handler if sqlite3OsLock() returns -** SQLITE_BUSY when trying to upgrade from no-lock to a SHARED lock, -** or when trying to upgrade from a RESERVED lock to an EXCLUSIVE -** lock. It does *not* invoke the busy handler when upgrading from -** SHARED to RESERVED, or when upgrading from SHARED to EXCLUSIVE -** (which occurs during hot-journal rollback). Summary: -** -** Transition | Invokes xBusyHandler -** -------------------------------------------------------- -** NO_LOCK -> SHARED_LOCK | Yes -** SHARED_LOCK -> RESERVED_LOCK | No -** SHARED_LOCK -> EXCLUSIVE_LOCK | No -** RESERVED_LOCK -> EXCLUSIVE_LOCK | Yes -** -** If the busy-handler callback returns non-zero, the lock is -** retried. If it returns zero, then the SQLITE_BUSY error is -** returned to the caller of the pager API function. -*/ -void sqlite3PagerSetBusyhandler( - Pager *pPager, /* Pager object */ - int (*xBusyHandler)(void *), /* Pointer to busy-handler function */ - void *pBusyHandlerArg /* Argument to pass to xBusyHandler */ -){ - pPager->xBusyHandler = xBusyHandler; - pPager->pBusyHandlerArg = pBusyHandlerArg; -} - -/* -** Change the page size used by the Pager object. The new page size -** is passed in *pPageSize. -** -** If the pager is in the error state when this function is called, it -** is a no-op. The value returned is the error state error code (i.e. -** one of SQLITE_IOERR, an SQLITE_IOERR_xxx sub-code or SQLITE_FULL). -** -** Otherwise, if all of the following are true: -** -** * the new page size (value of *pPageSize) is valid (a power -** of two between 512 and SQLITE_MAX_PAGE_SIZE, inclusive), and -** -** * there are no outstanding page references, and -** -** * the database is either not an in-memory database or it is -** an in-memory database that currently consists of zero pages. -** -** then the pager object page size is set to *pPageSize. -** -** If the page size is changed, then this function uses sqlite3PagerMalloc() -** to obtain a new Pager.pTmpSpace buffer. If this allocation attempt -** fails, SQLITE_NOMEM is returned and the page size remains unchanged. -** In all other cases, SQLITE_OK is returned. -** -** If the page size is not changed, either because one of the enumerated -** conditions above is not true, the pager was in error state when this -** function was called, or because the memory allocation attempt failed, -** then *pPageSize is set to the old, retained page size before returning. -*/ -int sqlite3PagerSetPagesize(Pager *pPager, u32 *pPageSize, int nReserve){ - int rc = SQLITE_OK; - - /* It is not possible to do a full assert_pager_state() here, as this - ** function may be called from within PagerOpen(), before the state - ** of the Pager object is internally consistent. - ** - ** At one point this function returned an error if the pager was in - ** PAGER_ERROR state. But since PAGER_ERROR state guarantees that - ** there is at least one outstanding page reference, this function - ** is a no-op for that case anyhow. - */ - - u32 pageSize = *pPageSize; - assert( pageSize==0 || (pageSize>=512 && pageSize<=SQLITE_MAX_PAGE_SIZE) ); - if( (pPager->memDb==0 || pPager->dbSize==0) - && sqlite3PcacheRefCount(pPager->pPCache)==0 - && pageSize && pageSize!=(u32)pPager->pageSize - ){ - char *pNew = NULL; /* New temp space */ - i64 nByte = 0; - - if( pPager->eState>PAGER_OPEN && isOpen(pPager->fd) ){ - rc = sqlite3OsFileSize(pPager->fd, &nByte); - } - if( rc==SQLITE_OK ){ - pNew = (char *)sqlite3PageMalloc(pageSize); - if( !pNew ) rc = SQLITE_NOMEM; - } - - if( rc==SQLITE_OK ){ - pager_reset(pPager); - pPager->dbSize = (Pgno)(nByte/pageSize); - pPager->pageSize = pageSize; - sqlite3PageFree(pPager->pTmpSpace); - pPager->pTmpSpace = pNew; - sqlite3PcacheSetPageSize(pPager->pPCache, pageSize); - } - } - - *pPageSize = pPager->pageSize; - if( rc==SQLITE_OK ){ - if( nReserve<0 ) nReserve = pPager->nReserve; - assert( nReserve>=0 && nReserve<1000 ); - pPager->nReserve = (i16)nReserve; - pagerReportSize(pPager); - } - return rc; -} - -/* -** Return a pointer to the "temporary page" buffer held internally -** by the pager. This is a buffer that is big enough to hold the -** entire content of a database page. This buffer is used internally -** during rollback and will be overwritten whenever a rollback -** occurs. But other modules are free to use it too, as long as -** no rollbacks are happening. -*/ -void *sqlite3PagerTempSpace(Pager *pPager){ - return pPager->pTmpSpace; -} - -/* -** Attempt to set the maximum database page count if mxPage is positive. -** Make no changes if mxPage is zero or negative. And never reduce the -** maximum page count below the current size of the database. -** -** Regardless of mxPage, return the current maximum page count. -*/ -int sqlite3PagerMaxPageCount(Pager *pPager, int mxPage){ - if( mxPage>0 ){ - pPager->mxPgno = mxPage; - } - assert( pPager->eState!=PAGER_OPEN ); /* Called only by OP_MaxPgcnt */ - assert( pPager->mxPgno>=pPager->dbSize ); /* OP_MaxPgcnt enforces this */ - return pPager->mxPgno; -} - -/* -** The following set of routines are used to disable the simulated -** I/O error mechanism. These routines are used to avoid simulated -** errors in places where we do not care about errors. -** -** Unless -DSQLITE_TEST=1 is used, these routines are all no-ops -** and generate no code. -*/ -#ifdef SQLITE_TEST -extern int sqlite3_io_error_pending; -extern int sqlite3_io_error_hit; -static int saved_cnt; -void disable_simulated_io_errors(void){ - saved_cnt = sqlite3_io_error_pending; - sqlite3_io_error_pending = -1; -} -void enable_simulated_io_errors(void){ - sqlite3_io_error_pending = saved_cnt; -} -#else -# define disable_simulated_io_errors() -# define enable_simulated_io_errors() -#endif - -/* -** Read the first N bytes from the beginning of the file into memory -** that pDest points to. -** -** If the pager was opened on a transient file (zFilename==""), or -** opened on a file less than N bytes in size, the output buffer is -** zeroed and SQLITE_OK returned. The rationale for this is that this -** function is used to read database headers, and a new transient or -** zero sized database has a header than consists entirely of zeroes. -** -** If any IO error apart from SQLITE_IOERR_SHORT_READ is encountered, -** the error code is returned to the caller and the contents of the -** output buffer undefined. -*/ -int sqlite3PagerReadFileheader(Pager *pPager, int N, unsigned char *pDest){ - int rc = SQLITE_OK; - memset(pDest, 0, N); - assert( isOpen(pPager->fd) || pPager->tempFile ); - - /* This routine is only called by btree immediately after creating - ** the Pager object. There has not been an opportunity to transition - ** to WAL mode yet. - */ - assert( !pagerUseWal(pPager) ); - - if( isOpen(pPager->fd) ){ - IOTRACE(("DBHDR %p 0 %d\n", pPager, N)) - rc = sqlite3OsRead(pPager->fd, pDest, N, 0); - if( rc==SQLITE_IOERR_SHORT_READ ){ - rc = SQLITE_OK; - } - } - return rc; -} - -/* -** This function may only be called when a read-transaction is open on -** the pager. It returns the total number of pages in the database. -** -** However, if the file is between 1 and bytes in size, then -** this is considered a 1 page file. -*/ -void sqlite3PagerPagecount(Pager *pPager, int *pnPage){ - assert( pPager->eState>=PAGER_READER ); - assert( pPager->eState!=PAGER_WRITER_FINISHED ); - *pnPage = (int)pPager->dbSize; -} - - -/* -** Try to obtain a lock of type locktype on the database file. If -** a similar or greater lock is already held, this function is a no-op -** (returning SQLITE_OK immediately). -** -** Otherwise, attempt to obtain the lock using sqlite3OsLock(). Invoke -** the busy callback if the lock is currently not available. Repeat -** until the busy callback returns false or until the attempt to -** obtain the lock succeeds. -** -** Return SQLITE_OK on success and an error code if we cannot obtain -** the lock. If the lock is obtained successfully, set the Pager.state -** variable to locktype before returning. -*/ -static int pager_wait_on_lock(Pager *pPager, int locktype){ - int rc; /* Return code */ - - /* Check that this is either a no-op (because the requested lock is - ** already held, or one of the transistions that the busy-handler - ** may be invoked during, according to the comment above - ** sqlite3PagerSetBusyhandler(). - */ - assert( (pPager->eLock>=locktype) - || (pPager->eLock==NO_LOCK && locktype==SHARED_LOCK) - || (pPager->eLock==RESERVED_LOCK && locktype==EXCLUSIVE_LOCK) - ); - - do { - rc = pagerLockDb(pPager, locktype); - }while( rc==SQLITE_BUSY && pPager->xBusyHandler(pPager->pBusyHandlerArg) ); - return rc; -} - -/* -** Function assertTruncateConstraint(pPager) checks that one of the -** following is true for all dirty pages currently in the page-cache: -** -** a) The page number is less than or equal to the size of the -** current database image, in pages, OR -** -** b) if the page content were written at this time, it would not -** be necessary to write the current content out to the sub-journal -** (as determined by function subjRequiresPage()). -** -** If the condition asserted by this function were not true, and the -** dirty page were to be discarded from the cache via the pagerStress() -** routine, pagerStress() would not write the current page content to -** the database file. If a savepoint transaction were rolled back after -** this happened, the correct behaviour would be to restore the current -** content of the page. However, since this content is not present in either -** the database file or the portion of the rollback journal and -** sub-journal rolled back the content could not be restored and the -** database image would become corrupt. It is therefore fortunate that -** this circumstance cannot arise. -*/ -#if defined(SQLITE_DEBUG) -static void assertTruncateConstraintCb(PgHdr *pPg){ - assert( pPg->flags&PGHDR_DIRTY ); - assert( !subjRequiresPage(pPg) || pPg->pgno<=pPg->pPager->dbSize ); -} -static void assertTruncateConstraint(Pager *pPager){ - sqlite3PcacheIterateDirty(pPager->pPCache, assertTruncateConstraintCb); -} -#else -# define assertTruncateConstraint(pPager) -#endif - -/* -** Truncate the in-memory database file image to nPage pages. This -** function does not actually modify the database file on disk. It -** just sets the internal state of the pager object so that the -** truncation will be done when the current transaction is committed. -*/ -void sqlite3PagerTruncateImage(Pager *pPager, Pgno nPage){ - assert( pPager->dbSize>=nPage ); - assert( pPager->eState>=PAGER_WRITER_CACHEMOD ); - pPager->dbSize = nPage; - assertTruncateConstraint(pPager); -} - - -/* -** This function is called before attempting a hot-journal rollback. It -** syncs the journal file to disk, then sets pPager->journalHdr to the -** size of the journal file so that the pager_playback() routine knows -** that the entire journal file has been synced. -** -** Syncing a hot-journal to disk before attempting to roll it back ensures -** that if a power-failure occurs during the rollback, the process that -** attempts rollback following system recovery sees the same journal -** content as this process. -** -** If everything goes as planned, SQLITE_OK is returned. Otherwise, -** an SQLite error code. -*/ -static int pagerSyncHotJournal(Pager *pPager){ - int rc = SQLITE_OK; - if( !pPager->noSync ){ - rc = sqlite3OsSync(pPager->jfd, SQLITE_SYNC_NORMAL); - } - if( rc==SQLITE_OK ){ - rc = sqlite3OsFileSize(pPager->jfd, &pPager->journalHdr); - } - return rc; -} - -/* -** Shutdown the page cache. Free all memory and close all files. -** -** If a transaction was in progress when this routine is called, that -** transaction is rolled back. All outstanding pages are invalidated -** and their memory is freed. Any attempt to use a page associated -** with this page cache after this function returns will likely -** result in a coredump. -** -** This function always succeeds. If a transaction is active an attempt -** is made to roll it back. If an error occurs during the rollback -** a hot journal may be left in the filesystem but no error is returned -** to the caller. -*/ -int sqlite3PagerClose(Pager *pPager){ - u8 *pTmp = (u8 *)pPager->pTmpSpace; - - assert( assert_pager_state(pPager) ); - disable_simulated_io_errors(); - sqlite3BeginBenignMalloc(); - /* pPager->errCode = 0; */ - pPager->exclusiveMode = 0; -#ifndef SQLITE_OMIT_WAL - sqlite3WalClose(pPager->pWal, pPager->ckptSyncFlags, pPager->pageSize, pTmp); - pPager->pWal = 0; -#endif - pager_reset(pPager); - if( MEMDB ){ - pager_unlock(pPager); - }else{ - /* If it is open, sync the journal file before calling UnlockAndRollback. - ** If this is not done, then an unsynced portion of the open journal - ** file may be played back into the database. If a power failure occurs - ** while this is happening, the database could become corrupt. - ** - ** If an error occurs while trying to sync the journal, shift the pager - ** into the ERROR state. This causes UnlockAndRollback to unlock the - ** database and close the journal file without attempting to roll it - ** back or finalize it. The next database user will have to do hot-journal - ** rollback before accessing the database file. - */ - if( isOpen(pPager->jfd) ){ - pager_error(pPager, pagerSyncHotJournal(pPager)); - } - pagerUnlockAndRollback(pPager); - } - sqlite3EndBenignMalloc(); - enable_simulated_io_errors(); - PAGERTRACE(("CLOSE %d\n", PAGERID(pPager))); - IOTRACE(("CLOSE %p\n", pPager)) - sqlite3OsClose(pPager->jfd); - sqlite3OsClose(pPager->fd); - sqlite3PageFree(pTmp); - sqlite3PcacheClose(pPager->pPCache); - -#ifdef SQLITE_HAS_CODEC - if( pPager->xCodecFree ) pPager->xCodecFree(pPager->pCodec); -#endif - - assert( !pPager->aSavepoint && !pPager->pInJournal ); - assert( !isOpen(pPager->jfd) && !isOpen(pPager->sjfd) ); - - sqlite3_free(pPager); - return SQLITE_OK; -} - -#if !defined(NDEBUG) || defined(SQLITE_TEST) -/* -** Return the page number for page pPg. -*/ -Pgno sqlite3PagerPagenumber(DbPage *pPg){ - return pPg->pgno; -} -#endif - -/* -** Increment the reference count for page pPg. -*/ -void sqlite3PagerRef(DbPage *pPg){ - sqlite3PcacheRef(pPg); -} - -/* -** Sync the journal. In other words, make sure all the pages that have -** been written to the journal have actually reached the surface of the -** disk and can be restored in the event of a hot-journal rollback. -** -** If the Pager.noSync flag is set, then this function is a no-op. -** Otherwise, the actions required depend on the journal-mode and the -** device characteristics of the the file-system, as follows: -** -** * If the journal file is an in-memory journal file, no action need -** be taken. -** -** * Otherwise, if the device does not support the SAFE_APPEND property, -** then the nRec field of the most recently written journal header -** is updated to contain the number of journal records that have -** been written following it. If the pager is operating in full-sync -** mode, then the journal file is synced before this field is updated. -** -** * If the device does not support the SEQUENTIAL property, then -** journal file is synced. -** -** Or, in pseudo-code: -** -** if( NOT ){ -** if( NOT SAFE_APPEND ){ -** if( ) xSync(); -** -** } -** if( NOT SEQUENTIAL ) xSync(); -** } -** -** If successful, this routine clears the PGHDR_NEED_SYNC flag of every -** page currently held in memory before returning SQLITE_OK. If an IO -** error is encountered, then the IO error code is returned to the caller. -*/ -static int syncJournal(Pager *pPager, int newHdr){ - int rc; /* Return code */ - - assert( pPager->eState==PAGER_WRITER_CACHEMOD - || pPager->eState==PAGER_WRITER_DBMOD - ); - assert( assert_pager_state(pPager) ); - assert( !pagerUseWal(pPager) ); - - rc = sqlite3PagerExclusiveLock(pPager); - if( rc!=SQLITE_OK ) return rc; - - if( !pPager->noSync ){ - assert( !pPager->tempFile ); - if( isOpen(pPager->jfd) && pPager->journalMode!=PAGER_JOURNALMODE_MEMORY ){ - const int iDc = sqlite3OsDeviceCharacteristics(pPager->fd); - assert( isOpen(pPager->jfd) ); - - if( 0==(iDc&SQLITE_IOCAP_SAFE_APPEND) ){ - /* This block deals with an obscure problem. If the last connection - ** that wrote to this database was operating in persistent-journal - ** mode, then the journal file may at this point actually be larger - ** than Pager.journalOff bytes. If the next thing in the journal - ** file happens to be a journal-header (written as part of the - ** previous connection's transaction), and a crash or power-failure - ** occurs after nRec is updated but before this connection writes - ** anything else to the journal file (or commits/rolls back its - ** transaction), then SQLite may become confused when doing the - ** hot-journal rollback following recovery. It may roll back all - ** of this connections data, then proceed to rolling back the old, - ** out-of-date data that follows it. Database corruption. - ** - ** To work around this, if the journal file does appear to contain - ** a valid header following Pager.journalOff, then write a 0x00 - ** byte to the start of it to prevent it from being recognized. - ** - ** Variable iNextHdrOffset is set to the offset at which this - ** problematic header will occur, if it exists. aMagic is used - ** as a temporary buffer to inspect the first couple of bytes of - ** the potential journal header. - */ - i64 iNextHdrOffset; - u8 aMagic[8]; - u8 zHeader[sizeof(aJournalMagic)+4]; - - memcpy(zHeader, aJournalMagic, sizeof(aJournalMagic)); - put32bits(&zHeader[sizeof(aJournalMagic)], pPager->nRec); - - iNextHdrOffset = journalHdrOffset(pPager); - rc = sqlite3OsRead(pPager->jfd, aMagic, 8, iNextHdrOffset); - if( rc==SQLITE_OK && 0==memcmp(aMagic, aJournalMagic, 8) ){ - static const u8 zerobyte = 0; - rc = sqlite3OsWrite(pPager->jfd, &zerobyte, 1, iNextHdrOffset); - } - if( rc!=SQLITE_OK && rc!=SQLITE_IOERR_SHORT_READ ){ - return rc; - } - - /* Write the nRec value into the journal file header. If in - ** full-synchronous mode, sync the journal first. This ensures that - ** all data has really hit the disk before nRec is updated to mark - ** it as a candidate for rollback. - ** - ** This is not required if the persistent media supports the - ** SAFE_APPEND property. Because in this case it is not possible - ** for garbage data to be appended to the file, the nRec field - ** is populated with 0xFFFFFFFF when the journal header is written - ** and never needs to be updated. - */ - if( pPager->fullSync && 0==(iDc&SQLITE_IOCAP_SEQUENTIAL) ){ - PAGERTRACE(("SYNC journal of %d\n", PAGERID(pPager))); - IOTRACE(("JSYNC %p\n", pPager)) - rc = sqlite3OsSync(pPager->jfd, pPager->syncFlags); - if( rc!=SQLITE_OK ) return rc; - } - IOTRACE(("JHDR %p %lld\n", pPager, pPager->journalHdr)); - rc = sqlite3OsWrite( - pPager->jfd, zHeader, sizeof(zHeader), pPager->journalHdr - ); - if( rc!=SQLITE_OK ) return rc; - } - if( 0==(iDc&SQLITE_IOCAP_SEQUENTIAL) ){ - PAGERTRACE(("SYNC journal of %d\n", PAGERID(pPager))); - IOTRACE(("JSYNC %p\n", pPager)) - rc = sqlite3OsSync(pPager->jfd, pPager->syncFlags| - (pPager->syncFlags==SQLITE_SYNC_FULL?SQLITE_SYNC_DATAONLY:0) - ); - if( rc!=SQLITE_OK ) return rc; - } - - pPager->journalHdr = pPager->journalOff; - if( newHdr && 0==(iDc&SQLITE_IOCAP_SAFE_APPEND) ){ - pPager->nRec = 0; - rc = writeJournalHdr(pPager); - if( rc!=SQLITE_OK ) return rc; - } - }else{ - pPager->journalHdr = pPager->journalOff; - } - } - - /* Unless the pager is in noSync mode, the journal file was just - ** successfully synced. Either way, clear the PGHDR_NEED_SYNC flag on - ** all pages. - */ - sqlite3PcacheClearSyncFlags(pPager->pPCache); - pPager->eState = PAGER_WRITER_DBMOD; - assert( assert_pager_state(pPager) ); - return SQLITE_OK; -} - -/* -** The argument is the first in a linked list of dirty pages connected -** by the PgHdr.pDirty pointer. This function writes each one of the -** in-memory pages in the list to the database file. The argument may -** be NULL, representing an empty list. In this case this function is -** a no-op. -** -** The pager must hold at least a RESERVED lock when this function -** is called. Before writing anything to the database file, this lock -** is upgraded to an EXCLUSIVE lock. If the lock cannot be obtained, -** SQLITE_BUSY is returned and no data is written to the database file. -** -** If the pager is a temp-file pager and the actual file-system file -** is not yet open, it is created and opened before any data is -** written out. -** -** Once the lock has been upgraded and, if necessary, the file opened, -** the pages are written out to the database file in list order. Writing -** a page is skipped if it meets either of the following criteria: -** -** * The page number is greater than Pager.dbSize, or -** * The PGHDR_DONT_WRITE flag is set on the page. -** -** If writing out a page causes the database file to grow, Pager.dbFileSize -** is updated accordingly. If page 1 is written out, then the value cached -** in Pager.dbFileVers[] is updated to match the new value stored in -** the database file. -** -** If everything is successful, SQLITE_OK is returned. If an IO error -** occurs, an IO error code is returned. Or, if the EXCLUSIVE lock cannot -** be obtained, SQLITE_BUSY is returned. -*/ -static int pager_write_pagelist(Pager *pPager, PgHdr *pList){ - int rc = SQLITE_OK; /* Return code */ - - /* This function is only called for rollback pagers in WRITER_DBMOD state. */ - assert( !pagerUseWal(pPager) ); - assert( pPager->eState==PAGER_WRITER_DBMOD ); - assert( pPager->eLock==EXCLUSIVE_LOCK ); - - /* If the file is a temp-file has not yet been opened, open it now. It - ** is not possible for rc to be other than SQLITE_OK if this branch - ** is taken, as pager_wait_on_lock() is a no-op for temp-files. - */ - if( !isOpen(pPager->fd) ){ - assert( pPager->tempFile && rc==SQLITE_OK ); - rc = pagerOpentemp(pPager, pPager->fd, pPager->vfsFlags); - } - - /* Before the first write, give the VFS a hint of what the final - ** file size will be. - */ - assert( rc!=SQLITE_OK || isOpen(pPager->fd) ); - if( rc==SQLITE_OK && pPager->dbSize>pPager->dbHintSize ){ - sqlite3_int64 szFile = pPager->pageSize * (sqlite3_int64)pPager->dbSize; - sqlite3OsFileControl(pPager->fd, SQLITE_FCNTL_SIZE_HINT, &szFile); - pPager->dbHintSize = pPager->dbSize; - } - - while( rc==SQLITE_OK && pList ){ - Pgno pgno = pList->pgno; - - /* If there are dirty pages in the page cache with page numbers greater - ** than Pager.dbSize, this means sqlite3PagerTruncateImage() was called to - ** make the file smaller (presumably by auto-vacuum code). Do not write - ** any such pages to the file. - ** - ** Also, do not write out any page that has the PGHDR_DONT_WRITE flag - ** set (set by sqlite3PagerDontWrite()). - */ - if( pgno<=pPager->dbSize && 0==(pList->flags&PGHDR_DONT_WRITE) ){ - i64 offset = (pgno-1)*(i64)pPager->pageSize; /* Offset to write */ - char *pData; /* Data to write */ - - assert( (pList->flags&PGHDR_NEED_SYNC)==0 ); - if( pList->pgno==1 ) pager_write_changecounter(pList); - - /* Encode the database */ - CODEC2(pPager, pList->pData, pgno, 6, return SQLITE_NOMEM, pData); - - /* Write out the page data. */ - rc = sqlite3OsWrite(pPager->fd, pData, pPager->pageSize, offset); - - /* If page 1 was just written, update Pager.dbFileVers to match - ** the value now stored in the database file. If writing this - ** page caused the database file to grow, update dbFileSize. - */ - if( pgno==1 ){ - memcpy(&pPager->dbFileVers, &pData[24], sizeof(pPager->dbFileVers)); - } - if( pgno>pPager->dbFileSize ){ - pPager->dbFileSize = pgno; - } - - /* Update any backup objects copying the contents of this pager. */ - sqlite3BackupUpdate(pPager->pBackup, pgno, (u8*)pList->pData); - - PAGERTRACE(("STORE %d page %d hash(%08x)\n", - PAGERID(pPager), pgno, pager_pagehash(pList))); - IOTRACE(("PGOUT %p %d\n", pPager, pgno)); - PAGER_INCR(sqlite3_pager_writedb_count); - PAGER_INCR(pPager->nWrite); - }else{ - PAGERTRACE(("NOSTORE %d page %d\n", PAGERID(pPager), pgno)); - } - pager_set_pagehash(pList); - pList = pList->pDirty; - } - - return rc; -} - -/* -** Ensure that the sub-journal file is open. If it is already open, this -** function is a no-op. -** -** SQLITE_OK is returned if everything goes according to plan. An -** SQLITE_IOERR_XXX error code is returned if a call to sqlite3OsOpen() -** fails. -*/ -static int openSubJournal(Pager *pPager){ - int rc = SQLITE_OK; - if( !isOpen(pPager->sjfd) ){ - if( pPager->journalMode==PAGER_JOURNALMODE_MEMORY || pPager->subjInMemory ){ - sqlite3MemJournalOpen(pPager->sjfd); - }else{ - rc = pagerOpentemp(pPager, pPager->sjfd, SQLITE_OPEN_SUBJOURNAL); - } - } - return rc; -} - -/* -** Append a record of the current state of page pPg to the sub-journal. -** It is the callers responsibility to use subjRequiresPage() to check -** that it is really required before calling this function. -** -** If successful, set the bit corresponding to pPg->pgno in the bitvecs -** for all open savepoints before returning. -** -** This function returns SQLITE_OK if everything is successful, an IO -** error code if the attempt to write to the sub-journal fails, or -** SQLITE_NOMEM if a malloc fails while setting a bit in a savepoint -** bitvec. -*/ -static int subjournalPage(PgHdr *pPg){ - int rc = SQLITE_OK; - Pager *pPager = pPg->pPager; - if( pPager->journalMode!=PAGER_JOURNALMODE_OFF ){ - - /* Open the sub-journal, if it has not already been opened */ - assert( pPager->useJournal ); - assert( isOpen(pPager->jfd) || pagerUseWal(pPager) ); - assert( isOpen(pPager->sjfd) || pPager->nSubRec==0 ); - assert( pagerUseWal(pPager) - || pageInJournal(pPg) - || pPg->pgno>pPager->dbOrigSize - ); - rc = openSubJournal(pPager); - - /* If the sub-journal was opened successfully (or was already open), - ** write the journal record into the file. */ - if( rc==SQLITE_OK ){ - void *pData = pPg->pData; - i64 offset = pPager->nSubRec*(4+pPager->pageSize); - char *pData2; - - CODEC2(pPager, pData, pPg->pgno, 7, return SQLITE_NOMEM, pData2); - PAGERTRACE(("STMT-JOURNAL %d page %d\n", PAGERID(pPager), pPg->pgno)); - rc = write32bits(pPager->sjfd, offset, pPg->pgno); - if( rc==SQLITE_OK ){ - rc = sqlite3OsWrite(pPager->sjfd, pData2, pPager->pageSize, offset+4); - } - } - } - if( rc==SQLITE_OK ){ - pPager->nSubRec++; - assert( pPager->nSavepoint>0 ); - rc = addToSavepointBitvecs(pPager, pPg->pgno); - } - return rc; -} - -/* -** This function is called by the pcache layer when it has reached some -** soft memory limit. The first argument is a pointer to a Pager object -** (cast as a void*). The pager is always 'purgeable' (not an in-memory -** database). The second argument is a reference to a page that is -** currently dirty but has no outstanding references. The page -** is always associated with the Pager object passed as the first -** argument. -** -** The job of this function is to make pPg clean by writing its contents -** out to the database file, if possible. This may involve syncing the -** journal file. -** -** If successful, sqlite3PcacheMakeClean() is called on the page and -** SQLITE_OK returned. If an IO error occurs while trying to make the -** page clean, the IO error code is returned. If the page cannot be -** made clean for some other reason, but no error occurs, then SQLITE_OK -** is returned by sqlite3PcacheMakeClean() is not called. -*/ -static int pagerStress(void *p, PgHdr *pPg){ - Pager *pPager = (Pager *)p; - int rc = SQLITE_OK; - - assert( pPg->pPager==pPager ); - assert( pPg->flags&PGHDR_DIRTY ); - - /* The doNotSyncSpill flag is set during times when doing a sync of - ** journal (and adding a new header) is not allowed. This occurs - ** during calls to sqlite3PagerWrite() while trying to journal multiple - ** pages belonging to the same sector. - ** - ** The doNotSpill flag inhibits all cache spilling regardless of whether - ** or not a sync is required. This is set during a rollback. - ** - ** Spilling is also prohibited when in an error state since that could - ** lead to database corruption. In the current implementaton it - ** is impossible for sqlite3PcacheFetch() to be called with createFlag==1 - ** while in the error state, hence it is impossible for this routine to - ** be called in the error state. Nevertheless, we include a NEVER() - ** test for the error state as a safeguard against future changes. - */ - if( NEVER(pPager->errCode) ) return SQLITE_OK; - if( pPager->doNotSpill ) return SQLITE_OK; - if( pPager->doNotSyncSpill && (pPg->flags & PGHDR_NEED_SYNC)!=0 ){ - return SQLITE_OK; - } - - pPg->pDirty = 0; - if( pagerUseWal(pPager) ){ - /* Write a single frame for this page to the log. */ - if( subjRequiresPage(pPg) ){ - rc = subjournalPage(pPg); - } - if( rc==SQLITE_OK ){ - rc = pagerWalFrames(pPager, pPg, 0, 0, 0); - } - }else{ - - /* Sync the journal file if required. */ - if( pPg->flags&PGHDR_NEED_SYNC - || pPager->eState==PAGER_WRITER_CACHEMOD - ){ - rc = syncJournal(pPager, 1); - } - - /* If the page number of this page is larger than the current size of - ** the database image, it may need to be written to the sub-journal. - ** This is because the call to pager_write_pagelist() below will not - ** actually write data to the file in this case. - ** - ** Consider the following sequence of events: - ** - ** BEGIN; - ** - ** - ** SAVEPOINT sp; - ** - ** pagerStress(page X) - ** ROLLBACK TO sp; - ** - ** If (X>Y), then when pagerStress is called page X will not be written - ** out to the database file, but will be dropped from the cache. Then, - ** following the "ROLLBACK TO sp" statement, reading page X will read - ** data from the database file. This will be the copy of page X as it - ** was when the transaction started, not as it was when "SAVEPOINT sp" - ** was executed. - ** - ** The solution is to write the current data for page X into the - ** sub-journal file now (if it is not already there), so that it will - ** be restored to its current value when the "ROLLBACK TO sp" is - ** executed. - */ - if( NEVER( - rc==SQLITE_OK && pPg->pgno>pPager->dbSize && subjRequiresPage(pPg) - ) ){ - rc = subjournalPage(pPg); - } - - /* Write the contents of the page out to the database file. */ - if( rc==SQLITE_OK ){ - assert( (pPg->flags&PGHDR_NEED_SYNC)==0 ); - rc = pager_write_pagelist(pPager, pPg); - } - } - - /* Mark the page as clean. */ - if( rc==SQLITE_OK ){ - PAGERTRACE(("STRESS %d page %d\n", PAGERID(pPager), pPg->pgno)); - sqlite3PcacheMakeClean(pPg); - } - - return pager_error(pPager, rc); -} - - -/* -** Allocate and initialize a new Pager object and put a pointer to it -** in *ppPager. The pager should eventually be freed by passing it -** to sqlite3PagerClose(). -** -** The zFilename argument is the path to the database file to open. -** If zFilename is NULL then a randomly-named temporary file is created -** and used as the file to be cached. Temporary files are be deleted -** automatically when they are closed. If zFilename is ":memory:" then -** all information is held in cache. It is never written to disk. -** This can be used to implement an in-memory database. -** -** The nExtra parameter specifies the number of bytes of space allocated -** along with each page reference. This space is available to the user -** via the sqlite3PagerGetExtra() API. -** -** The flags argument is used to specify properties that affect the -** operation of the pager. It should be passed some bitwise combination -** of the PAGER_OMIT_JOURNAL and PAGER_NO_READLOCK flags. -** -** The vfsFlags parameter is a bitmask to pass to the flags parameter -** of the xOpen() method of the supplied VFS when opening files. -** -** If the pager object is allocated and the specified file opened -** successfully, SQLITE_OK is returned and *ppPager set to point to -** the new pager object. If an error occurs, *ppPager is set to NULL -** and error code returned. This function may return SQLITE_NOMEM -** (sqlite3Malloc() is used to allocate memory), SQLITE_CANTOPEN or -** various SQLITE_IO_XXX errors. -*/ -int sqlite3PagerOpen( - sqlite3_vfs *pVfs, /* The virtual file system to use */ - Pager **ppPager, /* OUT: Return the Pager structure here */ - const char *zFilename, /* Name of the database file to open */ - int nExtra, /* Extra bytes append to each in-memory page */ - int flags, /* flags controlling this file */ - int vfsFlags, /* flags passed through to sqlite3_vfs.xOpen() */ - void (*xReinit)(DbPage*) /* Function to reinitialize pages */ -){ - u8 *pPtr; - Pager *pPager = 0; /* Pager object to allocate and return */ - int rc = SQLITE_OK; /* Return code */ - int tempFile = 0; /* True for temp files (incl. in-memory files) */ - int memDb = 0; /* True if this is an in-memory file */ - int readOnly = 0; /* True if this is a read-only file */ - int journalFileSize; /* Bytes to allocate for each journal fd */ - char *zPathname = 0; /* Full path to database file */ - int nPathname = 0; /* Number of bytes in zPathname */ - int useJournal = (flags & PAGER_OMIT_JOURNAL)==0; /* False to omit journal */ - int noReadlock = (flags & PAGER_NO_READLOCK)!=0; /* True to omit read-lock */ - int pcacheSize = sqlite3PcacheSize(); /* Bytes to allocate for PCache */ - u32 szPageDflt = SQLITE_DEFAULT_PAGE_SIZE; /* Default page size */ - const char *zUri = 0; /* URI args to copy */ - int nUri = 0; /* Number of bytes of URI args at *zUri */ - - /* Figure out how much space is required for each journal file-handle - ** (there are two of them, the main journal and the sub-journal). This - ** is the maximum space required for an in-memory journal file handle - ** and a regular journal file-handle. Note that a "regular journal-handle" - ** may be a wrapper capable of caching the first portion of the journal - ** file in memory to implement the atomic-write optimization (see - ** source file journal.c). - */ - if( sqlite3JournalSize(pVfs)>sqlite3MemJournalSize() ){ - journalFileSize = ROUND8(sqlite3JournalSize(pVfs)); - }else{ - journalFileSize = ROUND8(sqlite3MemJournalSize()); - } - - /* Set the output variable to NULL in case an error occurs. */ - *ppPager = 0; - -#ifndef SQLITE_OMIT_MEMORYDB - if( flags & PAGER_MEMORY ){ - memDb = 1; - zFilename = 0; - } -#endif - - /* Compute and store the full pathname in an allocated buffer pointed - ** to by zPathname, length nPathname. Or, if this is a temporary file, - ** leave both nPathname and zPathname set to 0. - */ - if( zFilename && zFilename[0] ){ - const char *z; - nPathname = pVfs->mxPathname+1; - zPathname = sqlite3Malloc(nPathname*2); - if( zPathname==0 ){ - return SQLITE_NOMEM; - } - zPathname[0] = 0; /* Make sure initialized even if FullPathname() fails */ - rc = sqlite3OsFullPathname(pVfs, zFilename, nPathname, zPathname); - nPathname = sqlite3Strlen30(zPathname); - z = zUri = &zFilename[sqlite3Strlen30(zFilename)+1]; - while( *z ){ - z += sqlite3Strlen30(z)+1; - z += sqlite3Strlen30(z)+1; - } - nUri = &z[1] - zUri; - if( rc==SQLITE_OK && nPathname+8>pVfs->mxPathname ){ - /* This branch is taken when the journal path required by - ** the database being opened will be more than pVfs->mxPathname - ** bytes in length. This means the database cannot be opened, - ** as it will not be possible to open the journal file or even - ** check for a hot-journal before reading. - */ - rc = SQLITE_CANTOPEN_BKPT; - } - if( rc!=SQLITE_OK ){ - sqlite3_free(zPathname); - return rc; - } - } - - /* Allocate memory for the Pager structure, PCache object, the - ** three file descriptors, the database file name and the journal - ** file name. The layout in memory is as follows: - ** - ** Pager object (sizeof(Pager) bytes) - ** PCache object (sqlite3PcacheSize() bytes) - ** Database file handle (pVfs->szOsFile bytes) - ** Sub-journal file handle (journalFileSize bytes) - ** Main journal file handle (journalFileSize bytes) - ** Database file name (nPathname+1 bytes) - ** Journal file name (nPathname+8+1 bytes) - */ - pPtr = (u8 *)sqlite3MallocZero( - ROUND8(sizeof(*pPager)) + /* Pager structure */ - ROUND8(pcacheSize) + /* PCache object */ - ROUND8(pVfs->szOsFile) + /* The main db file */ - journalFileSize * 2 + /* The two journal files */ - nPathname + 1 + nUri + /* zFilename */ - nPathname + 8 + 1 /* zJournal */ -#ifndef SQLITE_OMIT_WAL - + nPathname + 4 + 1 /* zWal */ -#endif - ); - assert( EIGHT_BYTE_ALIGNMENT(SQLITE_INT_TO_PTR(journalFileSize)) ); - if( !pPtr ){ - sqlite3_free(zPathname); - return SQLITE_NOMEM; - } - pPager = (Pager*)(pPtr); - pPager->pPCache = (PCache*)(pPtr += ROUND8(sizeof(*pPager))); - pPager->fd = (sqlite3_file*)(pPtr += ROUND8(pcacheSize)); - pPager->sjfd = (sqlite3_file*)(pPtr += ROUND8(pVfs->szOsFile)); - pPager->jfd = (sqlite3_file*)(pPtr += journalFileSize); - pPager->zFilename = (char*)(pPtr += journalFileSize); - assert( EIGHT_BYTE_ALIGNMENT(pPager->jfd) ); - - /* Fill in the Pager.zFilename and Pager.zJournal buffers, if required. */ - if( zPathname ){ - assert( nPathname>0 ); - pPager->zJournal = (char*)(pPtr += nPathname + 1 + nUri); - memcpy(pPager->zFilename, zPathname, nPathname); - memcpy(&pPager->zFilename[nPathname+1], zUri, nUri); - memcpy(pPager->zJournal, zPathname, nPathname); - memcpy(&pPager->zJournal[nPathname], "-journal", 8); - sqlite3FileSuffix3(pPager->zFilename, pPager->zJournal); -#ifndef SQLITE_OMIT_WAL - pPager->zWal = &pPager->zJournal[nPathname+8+1]; - memcpy(pPager->zWal, zPathname, nPathname); - memcpy(&pPager->zWal[nPathname], "-wal", 4); - sqlite3FileSuffix3(pPager->zFilename, pPager->zWal); -#endif - sqlite3_free(zPathname); - } - pPager->pVfs = pVfs; - pPager->vfsFlags = vfsFlags; - - /* Open the pager file. - */ - if( zFilename && zFilename[0] ){ - int fout = 0; /* VFS flags returned by xOpen() */ - rc = sqlite3OsOpen(pVfs, pPager->zFilename, pPager->fd, vfsFlags, &fout); - assert( !memDb ); - readOnly = (fout&SQLITE_OPEN_READONLY); - - /* If the file was successfully opened for read/write access, - ** choose a default page size in case we have to create the - ** database file. The default page size is the maximum of: - ** - ** + SQLITE_DEFAULT_PAGE_SIZE, - ** + The value returned by sqlite3OsSectorSize() - ** + The largest page size that can be written atomically. - */ - if( rc==SQLITE_OK && !readOnly ){ - setSectorSize(pPager); - assert(SQLITE_DEFAULT_PAGE_SIZE<=SQLITE_MAX_DEFAULT_PAGE_SIZE); - if( szPageDfltsectorSize ){ - if( pPager->sectorSize>SQLITE_MAX_DEFAULT_PAGE_SIZE ){ - szPageDflt = SQLITE_MAX_DEFAULT_PAGE_SIZE; - }else{ - szPageDflt = (u32)pPager->sectorSize; - } - } -#ifdef SQLITE_ENABLE_ATOMIC_WRITE - { - int iDc = sqlite3OsDeviceCharacteristics(pPager->fd); - int ii; - assert(SQLITE_IOCAP_ATOMIC512==(512>>8)); - assert(SQLITE_IOCAP_ATOMIC64K==(65536>>8)); - assert(SQLITE_MAX_DEFAULT_PAGE_SIZE<=65536); - for(ii=szPageDflt; ii<=SQLITE_MAX_DEFAULT_PAGE_SIZE; ii=ii*2){ - if( iDc&(SQLITE_IOCAP_ATOMIC|(ii>>8)) ){ - szPageDflt = ii; - } - } - } -#endif - } - }else{ - /* If a temporary file is requested, it is not opened immediately. - ** In this case we accept the default page size and delay actually - ** opening the file until the first call to OsWrite(). - ** - ** This branch is also run for an in-memory database. An in-memory - ** database is the same as a temp-file that is never written out to - ** disk and uses an in-memory rollback journal. - */ - tempFile = 1; - pPager->eState = PAGER_READER; - pPager->eLock = EXCLUSIVE_LOCK; - readOnly = (vfsFlags&SQLITE_OPEN_READONLY); - } - - /* The following call to PagerSetPagesize() serves to set the value of - ** Pager.pageSize and to allocate the Pager.pTmpSpace buffer. - */ - if( rc==SQLITE_OK ){ - assert( pPager->memDb==0 ); - rc = sqlite3PagerSetPagesize(pPager, &szPageDflt, -1); - testcase( rc!=SQLITE_OK ); - } - - /* If an error occurred in either of the blocks above, free the - ** Pager structure and close the file. - */ - if( rc!=SQLITE_OK ){ - assert( !pPager->pTmpSpace ); - sqlite3OsClose(pPager->fd); - sqlite3_free(pPager); - return rc; - } - - /* Initialize the PCache object. */ - assert( nExtra<1000 ); - nExtra = ROUND8(nExtra); - sqlite3PcacheOpen(szPageDflt, nExtra, !memDb, - !memDb?pagerStress:0, (void *)pPager, pPager->pPCache); - - PAGERTRACE(("OPEN %d %s\n", FILEHANDLEID(pPager->fd), pPager->zFilename)); - IOTRACE(("OPEN %p %s\n", pPager, pPager->zFilename)) - - pPager->useJournal = (u8)useJournal; - pPager->noReadlock = (noReadlock && readOnly) ?1:0; - /* pPager->stmtOpen = 0; */ - /* pPager->stmtInUse = 0; */ - /* pPager->nRef = 0; */ - /* pPager->stmtSize = 0; */ - /* pPager->stmtJSize = 0; */ - /* pPager->nPage = 0; */ - pPager->mxPgno = SQLITE_MAX_PAGE_COUNT; - /* pPager->state = PAGER_UNLOCK; */ -#if 0 - assert( pPager->state == (tempFile ? PAGER_EXCLUSIVE : PAGER_UNLOCK) ); -#endif - /* pPager->errMask = 0; */ - pPager->tempFile = (u8)tempFile; - assert( tempFile==PAGER_LOCKINGMODE_NORMAL - || tempFile==PAGER_LOCKINGMODE_EXCLUSIVE ); - assert( PAGER_LOCKINGMODE_EXCLUSIVE==1 ); - pPager->exclusiveMode = (u8)tempFile; - pPager->changeCountDone = pPager->tempFile; - pPager->memDb = (u8)memDb; - pPager->readOnly = (u8)readOnly; - assert( useJournal || pPager->tempFile ); - pPager->noSync = pPager->tempFile; - pPager->fullSync = pPager->noSync ?0:1; - pPager->syncFlags = pPager->noSync ? 0 : SQLITE_SYNC_NORMAL; - pPager->ckptSyncFlags = pPager->syncFlags; - /* pPager->pFirst = 0; */ - /* pPager->pFirstSynced = 0; */ - /* pPager->pLast = 0; */ - pPager->nExtra = (u16)nExtra; - pPager->journalSizeLimit = SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT; - assert( isOpen(pPager->fd) || tempFile ); - setSectorSize(pPager); - if( !useJournal ){ - pPager->journalMode = PAGER_JOURNALMODE_OFF; - }else if( memDb ){ - pPager->journalMode = PAGER_JOURNALMODE_MEMORY; - } - /* pPager->xBusyHandler = 0; */ - /* pPager->pBusyHandlerArg = 0; */ - pPager->xReiniter = xReinit; - /* memset(pPager->aHash, 0, sizeof(pPager->aHash)); */ - - *ppPager = pPager; - return SQLITE_OK; -} - - - -/* -** This function is called after transitioning from PAGER_UNLOCK to -** PAGER_SHARED state. It tests if there is a hot journal present in -** the file-system for the given pager. A hot journal is one that -** needs to be played back. According to this function, a hot-journal -** file exists if the following criteria are met: -** -** * The journal file exists in the file system, and -** * No process holds a RESERVED or greater lock on the database file, and -** * The database file itself is greater than 0 bytes in size, and -** * The first byte of the journal file exists and is not 0x00. -** -** If the current size of the database file is 0 but a journal file -** exists, that is probably an old journal left over from a prior -** database with the same name. In this case the journal file is -** just deleted using OsDelete, *pExists is set to 0 and SQLITE_OK -** is returned. -** -** This routine does not check if there is a master journal filename -** at the end of the file. If there is, and that master journal file -** does not exist, then the journal file is not really hot. In this -** case this routine will return a false-positive. The pager_playback() -** routine will discover that the journal file is not really hot and -** will not roll it back. -** -** If a hot-journal file is found to exist, *pExists is set to 1 and -** SQLITE_OK returned. If no hot-journal file is present, *pExists is -** set to 0 and SQLITE_OK returned. If an IO error occurs while trying -** to determine whether or not a hot-journal file exists, the IO error -** code is returned and the value of *pExists is undefined. -*/ -static int hasHotJournal(Pager *pPager, int *pExists){ - sqlite3_vfs * const pVfs = pPager->pVfs; - int rc = SQLITE_OK; /* Return code */ - int exists = 1; /* True if a journal file is present */ - int jrnlOpen = !!isOpen(pPager->jfd); - - assert( pPager->useJournal ); - assert( isOpen(pPager->fd) ); - assert( pPager->eState==PAGER_OPEN ); - - assert( jrnlOpen==0 || ( sqlite3OsDeviceCharacteristics(pPager->jfd) & - SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN - )); - - *pExists = 0; - if( !jrnlOpen ){ - rc = sqlite3OsAccess(pVfs, pPager->zJournal, SQLITE_ACCESS_EXISTS, &exists); - } - if( rc==SQLITE_OK && exists ){ - int locked = 0; /* True if some process holds a RESERVED lock */ - - /* Race condition here: Another process might have been holding the - ** the RESERVED lock and have a journal open at the sqlite3OsAccess() - ** call above, but then delete the journal and drop the lock before - ** we get to the following sqlite3OsCheckReservedLock() call. If that - ** is the case, this routine might think there is a hot journal when - ** in fact there is none. This results in a false-positive which will - ** be dealt with by the playback routine. Ticket #3883. - */ - rc = sqlite3OsCheckReservedLock(pPager->fd, &locked); - if( rc==SQLITE_OK && !locked ){ - Pgno nPage; /* Number of pages in database file */ - - /* Check the size of the database file. If it consists of 0 pages, - ** then delete the journal file. See the header comment above for - ** the reasoning here. Delete the obsolete journal file under - ** a RESERVED lock to avoid race conditions and to avoid violating - ** [H33020]. - */ - rc = pagerPagecount(pPager, &nPage); - if( rc==SQLITE_OK ){ - if( nPage==0 ){ - sqlite3BeginBenignMalloc(); - if( pagerLockDb(pPager, RESERVED_LOCK)==SQLITE_OK ){ - sqlite3OsDelete(pVfs, pPager->zJournal, 0); - if( !pPager->exclusiveMode ) pagerUnlockDb(pPager, SHARED_LOCK); - } - sqlite3EndBenignMalloc(); - }else{ - /* The journal file exists and no other connection has a reserved - ** or greater lock on the database file. Now check that there is - ** at least one non-zero bytes at the start of the journal file. - ** If there is, then we consider this journal to be hot. If not, - ** it can be ignored. - */ - if( !jrnlOpen ){ - int f = SQLITE_OPEN_READONLY|SQLITE_OPEN_MAIN_JOURNAL; - rc = sqlite3OsOpen(pVfs, pPager->zJournal, pPager->jfd, f, &f); - } - if( rc==SQLITE_OK ){ - u8 first = 0; - rc = sqlite3OsRead(pPager->jfd, (void *)&first, 1, 0); - if( rc==SQLITE_IOERR_SHORT_READ ){ - rc = SQLITE_OK; - } - if( !jrnlOpen ){ - sqlite3OsClose(pPager->jfd); - } - *pExists = (first!=0); - }else if( rc==SQLITE_CANTOPEN ){ - /* If we cannot open the rollback journal file in order to see if - ** its has a zero header, that might be due to an I/O error, or - ** it might be due to the race condition described above and in - ** ticket #3883. Either way, assume that the journal is hot. - ** This might be a false positive. But if it is, then the - ** automatic journal playback and recovery mechanism will deal - ** with it under an EXCLUSIVE lock where we do not need to - ** worry so much with race conditions. - */ - *pExists = 1; - rc = SQLITE_OK; - } - } - } - } - } - - return rc; -} - -/* -** This function is called to obtain a shared lock on the database file. -** It is illegal to call sqlite3PagerAcquire() until after this function -** has been successfully called. If a shared-lock is already held when -** this function is called, it is a no-op. -** -** The following operations are also performed by this function. -** -** 1) If the pager is currently in PAGER_OPEN state (no lock held -** on the database file), then an attempt is made to obtain a -** SHARED lock on the database file. Immediately after obtaining -** the SHARED lock, the file-system is checked for a hot-journal, -** which is played back if present. Following any hot-journal -** rollback, the contents of the cache are validated by checking -** the 'change-counter' field of the database file header and -** discarded if they are found to be invalid. -** -** 2) If the pager is running in exclusive-mode, and there are currently -** no outstanding references to any pages, and is in the error state, -** then an attempt is made to clear the error state by discarding -** the contents of the page cache and rolling back any open journal -** file. -** -** If everything is successful, SQLITE_OK is returned. If an IO error -** occurs while locking the database, checking for a hot-journal file or -** rolling back a journal file, the IO error code is returned. -*/ -int sqlite3PagerSharedLock(Pager *pPager){ - int rc = SQLITE_OK; /* Return code */ - - /* This routine is only called from b-tree and only when there are no - ** outstanding pages. This implies that the pager state should either - ** be OPEN or READER. READER is only possible if the pager is or was in - ** exclusive access mode. - */ - assert( sqlite3PcacheRefCount(pPager->pPCache)==0 ); - assert( assert_pager_state(pPager) ); - assert( pPager->eState==PAGER_OPEN || pPager->eState==PAGER_READER ); - if( NEVER(MEMDB && pPager->errCode) ){ return pPager->errCode; } - - if( !pagerUseWal(pPager) && pPager->eState==PAGER_OPEN ){ - int bHotJournal = 1; /* True if there exists a hot journal-file */ - - assert( !MEMDB ); - assert( pPager->noReadlock==0 || pPager->readOnly ); - - if( pPager->noReadlock==0 ){ - rc = pager_wait_on_lock(pPager, SHARED_LOCK); - if( rc!=SQLITE_OK ){ - assert( pPager->eLock==NO_LOCK || pPager->eLock==UNKNOWN_LOCK ); - goto failed; - } - } - - /* If a journal file exists, and there is no RESERVED lock on the - ** database file, then it either needs to be played back or deleted. - */ - if( pPager->eLock<=SHARED_LOCK ){ - rc = hasHotJournal(pPager, &bHotJournal); - } - if( rc!=SQLITE_OK ){ - goto failed; - } - if( bHotJournal ){ - /* Get an EXCLUSIVE lock on the database file. At this point it is - ** important that a RESERVED lock is not obtained on the way to the - ** EXCLUSIVE lock. If it were, another process might open the - ** database file, detect the RESERVED lock, and conclude that the - ** database is safe to read while this process is still rolling the - ** hot-journal back. - ** - ** Because the intermediate RESERVED lock is not requested, any - ** other process attempting to access the database file will get to - ** this point in the code and fail to obtain its own EXCLUSIVE lock - ** on the database file. - ** - ** Unless the pager is in locking_mode=exclusive mode, the lock is - ** downgraded to SHARED_LOCK before this function returns. - */ - rc = pagerLockDb(pPager, EXCLUSIVE_LOCK); - if( rc!=SQLITE_OK ){ - goto failed; - } - - /* If it is not already open and the file exists on disk, open the - ** journal for read/write access. Write access is required because - ** in exclusive-access mode the file descriptor will be kept open - ** and possibly used for a transaction later on. Also, write-access - ** is usually required to finalize the journal in journal_mode=persist - ** mode (and also for journal_mode=truncate on some systems). - ** - ** If the journal does not exist, it usually means that some - ** other connection managed to get in and roll it back before - ** this connection obtained the exclusive lock above. Or, it - ** may mean that the pager was in the error-state when this - ** function was called and the journal file does not exist. - */ - if( !isOpen(pPager->jfd) ){ - sqlite3_vfs * const pVfs = pPager->pVfs; - int bExists; /* True if journal file exists */ - rc = sqlite3OsAccess( - pVfs, pPager->zJournal, SQLITE_ACCESS_EXISTS, &bExists); - if( rc==SQLITE_OK && bExists ){ - int fout = 0; - int f = SQLITE_OPEN_READWRITE|SQLITE_OPEN_MAIN_JOURNAL; - assert( !pPager->tempFile ); - rc = sqlite3OsOpen(pVfs, pPager->zJournal, pPager->jfd, f, &fout); - assert( rc!=SQLITE_OK || isOpen(pPager->jfd) ); - if( rc==SQLITE_OK && fout&SQLITE_OPEN_READONLY ){ - rc = SQLITE_CANTOPEN_BKPT; - sqlite3OsClose(pPager->jfd); - } - } - } - - /* Playback and delete the journal. Drop the database write - ** lock and reacquire the read lock. Purge the cache before - ** playing back the hot-journal so that we don't end up with - ** an inconsistent cache. Sync the hot journal before playing - ** it back since the process that crashed and left the hot journal - ** probably did not sync it and we are required to always sync - ** the journal before playing it back. - */ - if( isOpen(pPager->jfd) ){ - assert( rc==SQLITE_OK ); - rc = pagerSyncHotJournal(pPager); - if( rc==SQLITE_OK ){ - rc = pager_playback(pPager, 1); - pPager->eState = PAGER_OPEN; - } - }else if( !pPager->exclusiveMode ){ - pagerUnlockDb(pPager, SHARED_LOCK); - } - - if( rc!=SQLITE_OK ){ - /* This branch is taken if an error occurs while trying to open - ** or roll back a hot-journal while holding an EXCLUSIVE lock. The - ** pager_unlock() routine will be called before returning to unlock - ** the file. If the unlock attempt fails, then Pager.eLock must be - ** set to UNKNOWN_LOCK (see the comment above the #define for - ** UNKNOWN_LOCK above for an explanation). - ** - ** In order to get pager_unlock() to do this, set Pager.eState to - ** PAGER_ERROR now. This is not actually counted as a transition - ** to ERROR state in the state diagram at the top of this file, - ** since we know that the same call to pager_unlock() will very - ** shortly transition the pager object to the OPEN state. Calling - ** assert_pager_state() would fail now, as it should not be possible - ** to be in ERROR state when there are zero outstanding page - ** references. - */ - pager_error(pPager, rc); - goto failed; - } - - assert( pPager->eState==PAGER_OPEN ); - assert( (pPager->eLock==SHARED_LOCK) - || (pPager->exclusiveMode && pPager->eLock>SHARED_LOCK) - ); - } - - if( !pPager->tempFile - && (pPager->pBackup || sqlite3PcachePagecount(pPager->pPCache)>0) - ){ - /* The shared-lock has just been acquired on the database file - ** and there are already pages in the cache (from a previous - ** read or write transaction). Check to see if the database - ** has been modified. If the database has changed, flush the - ** cache. - ** - ** Database changes is detected by looking at 15 bytes beginning - ** at offset 24 into the file. The first 4 of these 16 bytes are - ** a 32-bit counter that is incremented with each change. The - ** other bytes change randomly with each file change when - ** a codec is in use. - ** - ** There is a vanishingly small chance that a change will not be - ** detected. The chance of an undetected change is so small that - ** it can be neglected. - */ - Pgno nPage = 0; - char dbFileVers[sizeof(pPager->dbFileVers)]; - - rc = pagerPagecount(pPager, &nPage); - if( rc ) goto failed; - - if( nPage>0 ){ - IOTRACE(("CKVERS %p %d\n", pPager, sizeof(dbFileVers))); - rc = sqlite3OsRead(pPager->fd, &dbFileVers, sizeof(dbFileVers), 24); - if( rc!=SQLITE_OK ){ - goto failed; - } - }else{ - memset(dbFileVers, 0, sizeof(dbFileVers)); - } - - if( memcmp(pPager->dbFileVers, dbFileVers, sizeof(dbFileVers))!=0 ){ - pager_reset(pPager); - } - } - - /* If there is a WAL file in the file-system, open this database in WAL - ** mode. Otherwise, the following function call is a no-op. - */ - rc = pagerOpenWalIfPresent(pPager); -#ifndef SQLITE_OMIT_WAL - assert( pPager->pWal==0 || rc==SQLITE_OK ); -#endif - } - - if( pagerUseWal(pPager) ){ - assert( rc==SQLITE_OK ); - rc = pagerBeginReadTransaction(pPager); - } - - if( pPager->eState==PAGER_OPEN && rc==SQLITE_OK ){ - rc = pagerPagecount(pPager, &pPager->dbSize); - } - - failed: - if( rc!=SQLITE_OK ){ - assert( !MEMDB ); - pager_unlock(pPager); - assert( pPager->eState==PAGER_OPEN ); - }else{ - pPager->eState = PAGER_READER; - } - return rc; -} - -/* -** If the reference count has reached zero, rollback any active -** transaction and unlock the pager. -** -** Except, in locking_mode=EXCLUSIVE when there is nothing to in -** the rollback journal, the unlock is not performed and there is -** nothing to rollback, so this routine is a no-op. -*/ -static void pagerUnlockIfUnused(Pager *pPager){ - if( (sqlite3PcacheRefCount(pPager->pPCache)==0) ){ - pagerUnlockAndRollback(pPager); - } -} - -/* -** Acquire a reference to page number pgno in pager pPager (a page -** reference has type DbPage*). If the requested reference is -** successfully obtained, it is copied to *ppPage and SQLITE_OK returned. -** -** If the requested page is already in the cache, it is returned. -** Otherwise, a new page object is allocated and populated with data -** read from the database file. In some cases, the pcache module may -** choose not to allocate a new page object and may reuse an existing -** object with no outstanding references. -** -** The extra data appended to a page is always initialized to zeros the -** first time a page is loaded into memory. If the page requested is -** already in the cache when this function is called, then the extra -** data is left as it was when the page object was last used. -** -** If the database image is smaller than the requested page or if a -** non-zero value is passed as the noContent parameter and the -** requested page is not already stored in the cache, then no -** actual disk read occurs. In this case the memory image of the -** page is initialized to all zeros. -** -** If noContent is true, it means that we do not care about the contents -** of the page. This occurs in two seperate scenarios: -** -** a) When reading a free-list leaf page from the database, and -** -** b) When a savepoint is being rolled back and we need to load -** a new page into the cache to be filled with the data read -** from the savepoint journal. -** -** If noContent is true, then the data returned is zeroed instead of -** being read from the database. Additionally, the bits corresponding -** to pgno in Pager.pInJournal (bitvec of pages already written to the -** journal file) and the PagerSavepoint.pInSavepoint bitvecs of any open -** savepoints are set. This means if the page is made writable at any -** point in the future, using a call to sqlite3PagerWrite(), its contents -** will not be journaled. This saves IO. -** -** The acquisition might fail for several reasons. In all cases, -** an appropriate error code is returned and *ppPage is set to NULL. -** -** See also sqlite3PagerLookup(). Both this routine and Lookup() attempt -** to find a page in the in-memory cache first. If the page is not already -** in memory, this routine goes to disk to read it in whereas Lookup() -** just returns 0. This routine acquires a read-lock the first time it -** has to go to disk, and could also playback an old journal if necessary. -** Since Lookup() never goes to disk, it never has to deal with locks -** or journal files. -*/ -int sqlite3PagerAcquire( - Pager *pPager, /* The pager open on the database file */ - Pgno pgno, /* Page number to fetch */ - DbPage **ppPage, /* Write a pointer to the page here */ - int noContent /* Do not bother reading content from disk if true */ -){ - int rc; - PgHdr *pPg; - - assert( pPager->eState>=PAGER_READER ); - assert( assert_pager_state(pPager) ); - - if( pgno==0 ){ - return SQLITE_CORRUPT_BKPT; - } - - /* If the pager is in the error state, return an error immediately. - ** Otherwise, request the page from the PCache layer. */ - if( pPager->errCode!=SQLITE_OK ){ - rc = pPager->errCode; - }else{ - rc = sqlite3PcacheFetch(pPager->pPCache, pgno, 1, ppPage); - } - - if( rc!=SQLITE_OK ){ - /* Either the call to sqlite3PcacheFetch() returned an error or the - ** pager was already in the error-state when this function was called. - ** Set pPg to 0 and jump to the exception handler. */ - pPg = 0; - goto pager_acquire_err; - } - assert( (*ppPage)->pgno==pgno ); - assert( (*ppPage)->pPager==pPager || (*ppPage)->pPager==0 ); - - if( (*ppPage)->pPager && !noContent ){ - /* In this case the pcache already contains an initialized copy of - ** the page. Return without further ado. */ - assert( pgno<=PAGER_MAX_PGNO && pgno!=PAGER_MJ_PGNO(pPager) ); - pPager->nHit++; - return SQLITE_OK; - - }else{ - /* The pager cache has created a new page. Its content needs to - ** be initialized. */ - - pPg = *ppPage; - pPg->pPager = pPager; - - /* The maximum page number is 2^31. Return SQLITE_CORRUPT if a page - ** number greater than this, or the unused locking-page, is requested. */ - if( pgno>PAGER_MAX_PGNO || pgno==PAGER_MJ_PGNO(pPager) ){ - rc = SQLITE_CORRUPT_BKPT; - goto pager_acquire_err; - } - - if( MEMDB || pPager->dbSizefd) ){ - if( pgno>pPager->mxPgno ){ - rc = SQLITE_FULL; - goto pager_acquire_err; - } - if( noContent ){ - /* Failure to set the bits in the InJournal bit-vectors is benign. - ** It merely means that we might do some extra work to journal a - ** page that does not need to be journaled. Nevertheless, be sure - ** to test the case where a malloc error occurs while trying to set - ** a bit in a bit vector. - */ - sqlite3BeginBenignMalloc(); - if( pgno<=pPager->dbOrigSize ){ - TESTONLY( rc = ) sqlite3BitvecSet(pPager->pInJournal, pgno); - testcase( rc==SQLITE_NOMEM ); - } - TESTONLY( rc = ) addToSavepointBitvecs(pPager, pgno); - testcase( rc==SQLITE_NOMEM ); - sqlite3EndBenignMalloc(); - } - memset(pPg->pData, 0, pPager->pageSize); - IOTRACE(("ZERO %p %d\n", pPager, pgno)); - }else{ - assert( pPg->pPager==pPager ); - pPager->nMiss++; - rc = readDbPage(pPg); - if( rc!=SQLITE_OK ){ - goto pager_acquire_err; - } - } - pager_set_pagehash(pPg); - } - - return SQLITE_OK; - -pager_acquire_err: - assert( rc!=SQLITE_OK ); - if( pPg ){ - sqlite3PcacheDrop(pPg); - } - pagerUnlockIfUnused(pPager); - - *ppPage = 0; - return rc; -} - -/* -** Acquire a page if it is already in the in-memory cache. Do -** not read the page from disk. Return a pointer to the page, -** or 0 if the page is not in cache. -** -** See also sqlite3PagerGet(). The difference between this routine -** and sqlite3PagerGet() is that _get() will go to the disk and read -** in the page if the page is not already in cache. This routine -** returns NULL if the page is not in cache or if a disk I/O error -** has ever happened. -*/ -DbPage *sqlite3PagerLookup(Pager *pPager, Pgno pgno){ - PgHdr *pPg = 0; - assert( pPager!=0 ); - assert( pgno!=0 ); - assert( pPager->pPCache!=0 ); - assert( pPager->eState>=PAGER_READER && pPager->eState!=PAGER_ERROR ); - sqlite3PcacheFetch(pPager->pPCache, pgno, 0, &pPg); - return pPg; -} - -/* -** Release a page reference. -** -** If the number of references to the page drop to zero, then the -** page is added to the LRU list. When all references to all pages -** are released, a rollback occurs and the lock on the database is -** removed. -*/ -void sqlite3PagerUnref(DbPage *pPg){ - if( pPg ){ - Pager *pPager = pPg->pPager; - sqlite3PcacheRelease(pPg); - pagerUnlockIfUnused(pPager); - } -} - -/* -** This function is called at the start of every write transaction. -** There must already be a RESERVED or EXCLUSIVE lock on the database -** file when this routine is called. -** -** Open the journal file for pager pPager and write a journal header -** to the start of it. If there are active savepoints, open the sub-journal -** as well. This function is only used when the journal file is being -** opened to write a rollback log for a transaction. It is not used -** when opening a hot journal file to roll it back. -** -** If the journal file is already open (as it may be in exclusive mode), -** then this function just writes a journal header to the start of the -** already open file. -** -** Whether or not the journal file is opened by this function, the -** Pager.pInJournal bitvec structure is allocated. -** -** Return SQLITE_OK if everything is successful. Otherwise, return -** SQLITE_NOMEM if the attempt to allocate Pager.pInJournal fails, or -** an IO error code if opening or writing the journal file fails. -*/ -static int pager_open_journal(Pager *pPager){ - int rc = SQLITE_OK; /* Return code */ - sqlite3_vfs * const pVfs = pPager->pVfs; /* Local cache of vfs pointer */ - - assert( pPager->eState==PAGER_WRITER_LOCKED ); - assert( assert_pager_state(pPager) ); - assert( pPager->pInJournal==0 ); - - /* If already in the error state, this function is a no-op. But on - ** the other hand, this routine is never called if we are already in - ** an error state. */ - if( NEVER(pPager->errCode) ) return pPager->errCode; - - if( !pagerUseWal(pPager) && pPager->journalMode!=PAGER_JOURNALMODE_OFF ){ - pPager->pInJournal = sqlite3BitvecCreate(pPager->dbSize); - if( pPager->pInJournal==0 ){ - return SQLITE_NOMEM; - } - - /* Open the journal file if it is not already open. */ - if( !isOpen(pPager->jfd) ){ - if( pPager->journalMode==PAGER_JOURNALMODE_MEMORY ){ - sqlite3MemJournalOpen(pPager->jfd); - }else{ - const int flags = /* VFS flags to open journal file */ - SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE| - (pPager->tempFile ? - (SQLITE_OPEN_DELETEONCLOSE|SQLITE_OPEN_TEMP_JOURNAL): - (SQLITE_OPEN_MAIN_JOURNAL) - ); - #ifdef SQLITE_ENABLE_ATOMIC_WRITE - rc = sqlite3JournalOpen( - pVfs, pPager->zJournal, pPager->jfd, flags, jrnlBufferSize(pPager) - ); - #else - rc = sqlite3OsOpen(pVfs, pPager->zJournal, pPager->jfd, flags, 0); - #endif - } - assert( rc!=SQLITE_OK || isOpen(pPager->jfd) ); - } - - - /* Write the first journal header to the journal file and open - ** the sub-journal if necessary. - */ - if( rc==SQLITE_OK ){ - /* TODO: Check if all of these are really required. */ - pPager->nRec = 0; - pPager->journalOff = 0; - pPager->setMaster = 0; - pPager->journalHdr = 0; - rc = writeJournalHdr(pPager); - } - } - - if( rc!=SQLITE_OK ){ - sqlite3BitvecDestroy(pPager->pInJournal); - pPager->pInJournal = 0; - }else{ - assert( pPager->eState==PAGER_WRITER_LOCKED ); - pPager->eState = PAGER_WRITER_CACHEMOD; - } - - return rc; -} - -/* -** Begin a write-transaction on the specified pager object. If a -** write-transaction has already been opened, this function is a no-op. -** -** If the exFlag argument is false, then acquire at least a RESERVED -** lock on the database file. If exFlag is true, then acquire at least -** an EXCLUSIVE lock. If such a lock is already held, no locking -** functions need be called. -** -** If the subjInMemory argument is non-zero, then any sub-journal opened -** within this transaction will be opened as an in-memory file. This -** has no effect if the sub-journal is already opened (as it may be when -** running in exclusive mode) or if the transaction does not require a -** sub-journal. If the subjInMemory argument is zero, then any required -** sub-journal is implemented in-memory if pPager is an in-memory database, -** or using a temporary file otherwise. -*/ -int sqlite3PagerBegin(Pager *pPager, int exFlag, int subjInMemory){ - int rc = SQLITE_OK; - - if( pPager->errCode ) return pPager->errCode; - assert( pPager->eState>=PAGER_READER && pPager->eStatesubjInMemory = (u8)subjInMemory; - - if( ALWAYS(pPager->eState==PAGER_READER) ){ - assert( pPager->pInJournal==0 ); - - if( pagerUseWal(pPager) ){ - /* If the pager is configured to use locking_mode=exclusive, and an - ** exclusive lock on the database is not already held, obtain it now. - */ - if( pPager->exclusiveMode && sqlite3WalExclusiveMode(pPager->pWal, -1) ){ - rc = pagerLockDb(pPager, EXCLUSIVE_LOCK); - if( rc!=SQLITE_OK ){ - return rc; - } - sqlite3WalExclusiveMode(pPager->pWal, 1); - } - - /* Grab the write lock on the log file. If successful, upgrade to - ** PAGER_RESERVED state. Otherwise, return an error code to the caller. - ** The busy-handler is not invoked if another connection already - ** holds the write-lock. If possible, the upper layer will call it. - */ - rc = sqlite3WalBeginWriteTransaction(pPager->pWal); - }else{ - /* Obtain a RESERVED lock on the database file. If the exFlag parameter - ** is true, then immediately upgrade this to an EXCLUSIVE lock. The - ** busy-handler callback can be used when upgrading to the EXCLUSIVE - ** lock, but not when obtaining the RESERVED lock. - */ - rc = pagerLockDb(pPager, RESERVED_LOCK); - if( rc==SQLITE_OK && exFlag ){ - rc = pager_wait_on_lock(pPager, EXCLUSIVE_LOCK); - } - } - - if( rc==SQLITE_OK ){ - /* Change to WRITER_LOCKED state. - ** - ** WAL mode sets Pager.eState to PAGER_WRITER_LOCKED or CACHEMOD - ** when it has an open transaction, but never to DBMOD or FINISHED. - ** This is because in those states the code to roll back savepoint - ** transactions may copy data from the sub-journal into the database - ** file as well as into the page cache. Which would be incorrect in - ** WAL mode. - */ - pPager->eState = PAGER_WRITER_LOCKED; - pPager->dbHintSize = pPager->dbSize; - pPager->dbFileSize = pPager->dbSize; - pPager->dbOrigSize = pPager->dbSize; - pPager->journalOff = 0; - } - - assert( rc==SQLITE_OK || pPager->eState==PAGER_READER ); - assert( rc!=SQLITE_OK || pPager->eState==PAGER_WRITER_LOCKED ); - assert( assert_pager_state(pPager) ); - } - - PAGERTRACE(("TRANSACTION %d\n", PAGERID(pPager))); - return rc; -} - -/* -** Mark a single data page as writeable. The page is written into the -** main journal or sub-journal as required. If the page is written into -** one of the journals, the corresponding bit is set in the -** Pager.pInJournal bitvec and the PagerSavepoint.pInSavepoint bitvecs -** of any open savepoints as appropriate. -*/ -static int pager_write(PgHdr *pPg){ - void *pData = pPg->pData; - Pager *pPager = pPg->pPager; - int rc = SQLITE_OK; - - /* This routine is not called unless a write-transaction has already - ** been started. The journal file may or may not be open at this point. - ** It is never called in the ERROR state. - */ - assert( pPager->eState==PAGER_WRITER_LOCKED - || pPager->eState==PAGER_WRITER_CACHEMOD - || pPager->eState==PAGER_WRITER_DBMOD - ); - assert( assert_pager_state(pPager) ); - - /* If an error has been previously detected, report the same error - ** again. This should not happen, but the check provides robustness. */ - if( NEVER(pPager->errCode) ) return pPager->errCode; - - /* Higher-level routines never call this function if database is not - ** writable. But check anyway, just for robustness. */ - if( NEVER(pPager->readOnly) ) return SQLITE_PERM; - - CHECK_PAGE(pPg); - - /* The journal file needs to be opened. Higher level routines have already - ** obtained the necessary locks to begin the write-transaction, but the - ** rollback journal might not yet be open. Open it now if this is the case. - ** - ** This is done before calling sqlite3PcacheMakeDirty() on the page. - ** Otherwise, if it were done after calling sqlite3PcacheMakeDirty(), then - ** an error might occur and the pager would end up in WRITER_LOCKED state - ** with pages marked as dirty in the cache. - */ - if( pPager->eState==PAGER_WRITER_LOCKED ){ - rc = pager_open_journal(pPager); - if( rc!=SQLITE_OK ) return rc; - } - assert( pPager->eState>=PAGER_WRITER_CACHEMOD ); - assert( assert_pager_state(pPager) ); - - /* Mark the page as dirty. If the page has already been written - ** to the journal then we can return right away. - */ - sqlite3PcacheMakeDirty(pPg); - if( pageInJournal(pPg) && !subjRequiresPage(pPg) ){ - assert( !pagerUseWal(pPager) ); - }else{ - - /* The transaction journal now exists and we have a RESERVED or an - ** EXCLUSIVE lock on the main database file. Write the current page to - ** the transaction journal if it is not there already. - */ - if( !pageInJournal(pPg) && !pagerUseWal(pPager) ){ - assert( pagerUseWal(pPager)==0 ); - if( pPg->pgno<=pPager->dbOrigSize && isOpen(pPager->jfd) ){ - u32 cksum; - char *pData2; - i64 iOff = pPager->journalOff; - - /* We should never write to the journal file the page that - ** contains the database locks. The following assert verifies - ** that we do not. */ - assert( pPg->pgno!=PAGER_MJ_PGNO(pPager) ); - - assert( pPager->journalHdr<=pPager->journalOff ); - CODEC2(pPager, pData, pPg->pgno, 7, return SQLITE_NOMEM, pData2); - cksum = pager_cksum(pPager, (u8*)pData2); - - /* Even if an IO or diskfull error occurs while journalling the - ** page in the block above, set the need-sync flag for the page. - ** Otherwise, when the transaction is rolled back, the logic in - ** playback_one_page() will think that the page needs to be restored - ** in the database file. And if an IO error occurs while doing so, - ** then corruption may follow. - */ - pPg->flags |= PGHDR_NEED_SYNC; - - rc = write32bits(pPager->jfd, iOff, pPg->pgno); - if( rc!=SQLITE_OK ) return rc; - rc = sqlite3OsWrite(pPager->jfd, pData2, pPager->pageSize, iOff+4); - if( rc!=SQLITE_OK ) return rc; - rc = write32bits(pPager->jfd, iOff+pPager->pageSize+4, cksum); - if( rc!=SQLITE_OK ) return rc; - - IOTRACE(("JOUT %p %d %lld %d\n", pPager, pPg->pgno, - pPager->journalOff, pPager->pageSize)); - PAGER_INCR(sqlite3_pager_writej_count); - PAGERTRACE(("JOURNAL %d page %d needSync=%d hash(%08x)\n", - PAGERID(pPager), pPg->pgno, - ((pPg->flags&PGHDR_NEED_SYNC)?1:0), pager_pagehash(pPg))); - - pPager->journalOff += 8 + pPager->pageSize; - pPager->nRec++; - assert( pPager->pInJournal!=0 ); - rc = sqlite3BitvecSet(pPager->pInJournal, pPg->pgno); - testcase( rc==SQLITE_NOMEM ); - assert( rc==SQLITE_OK || rc==SQLITE_NOMEM ); - rc |= addToSavepointBitvecs(pPager, pPg->pgno); - if( rc!=SQLITE_OK ){ - assert( rc==SQLITE_NOMEM ); - return rc; - } - }else{ - if( pPager->eState!=PAGER_WRITER_DBMOD ){ - pPg->flags |= PGHDR_NEED_SYNC; - } - PAGERTRACE(("APPEND %d page %d needSync=%d\n", - PAGERID(pPager), pPg->pgno, - ((pPg->flags&PGHDR_NEED_SYNC)?1:0))); - } - } - - /* If the statement journal is open and the page is not in it, - ** then write the current page to the statement journal. Note that - ** the statement journal format differs from the standard journal format - ** in that it omits the checksums and the header. - */ - if( subjRequiresPage(pPg) ){ - rc = subjournalPage(pPg); - } - } - - /* Update the database size and return. - */ - if( pPager->dbSizepgno ){ - pPager->dbSize = pPg->pgno; - } - return rc; -} - -/* -** Mark a data page as writeable. This routine must be called before -** making changes to a page. The caller must check the return value -** of this function and be careful not to change any page data unless -** this routine returns SQLITE_OK. -** -** The difference between this function and pager_write() is that this -** function also deals with the special case where 2 or more pages -** fit on a single disk sector. In this case all co-resident pages -** must have been written to the journal file before returning. -** -** If an error occurs, SQLITE_NOMEM or an IO error code is returned -** as appropriate. Otherwise, SQLITE_OK. -*/ -int sqlite3PagerWrite(DbPage *pDbPage){ - int rc = SQLITE_OK; - - PgHdr *pPg = pDbPage; - Pager *pPager = pPg->pPager; - Pgno nPagePerSector = (pPager->sectorSize/pPager->pageSize); - - assert( pPager->eState>=PAGER_WRITER_LOCKED ); - assert( pPager->eState!=PAGER_ERROR ); - assert( assert_pager_state(pPager) ); - - if( nPagePerSector>1 ){ - Pgno nPageCount; /* Total number of pages in database file */ - Pgno pg1; /* First page of the sector pPg is located on. */ - int nPage = 0; /* Number of pages starting at pg1 to journal */ - int ii; /* Loop counter */ - int needSync = 0; /* True if any page has PGHDR_NEED_SYNC */ - - /* Set the doNotSyncSpill flag to 1. This is because we cannot allow - ** a journal header to be written between the pages journaled by - ** this function. - */ - assert( !MEMDB ); - assert( pPager->doNotSyncSpill==0 ); - pPager->doNotSyncSpill++; - - /* This trick assumes that both the page-size and sector-size are - ** an integer power of 2. It sets variable pg1 to the identifier - ** of the first page of the sector pPg is located on. - */ - pg1 = ((pPg->pgno-1) & ~(nPagePerSector-1)) + 1; - - nPageCount = pPager->dbSize; - if( pPg->pgno>nPageCount ){ - nPage = (pPg->pgno - pg1)+1; - }else if( (pg1+nPagePerSector-1)>nPageCount ){ - nPage = nPageCount+1-pg1; - }else{ - nPage = nPagePerSector; - } - assert(nPage>0); - assert(pg1<=pPg->pgno); - assert((pg1+nPage)>pPg->pgno); - - for(ii=0; iipgno || !sqlite3BitvecTest(pPager->pInJournal, pg) ){ - if( pg!=PAGER_MJ_PGNO(pPager) ){ - rc = sqlite3PagerGet(pPager, pg, &pPage); - if( rc==SQLITE_OK ){ - rc = pager_write(pPage); - if( pPage->flags&PGHDR_NEED_SYNC ){ - needSync = 1; - } - sqlite3PagerUnref(pPage); - } - } - }else if( (pPage = pager_lookup(pPager, pg))!=0 ){ - if( pPage->flags&PGHDR_NEED_SYNC ){ - needSync = 1; - } - sqlite3PagerUnref(pPage); - } - } - - /* If the PGHDR_NEED_SYNC flag is set for any of the nPage pages - ** starting at pg1, then it needs to be set for all of them. Because - ** writing to any of these nPage pages may damage the others, the - ** journal file must contain sync()ed copies of all of them - ** before any of them can be written out to the database file. - */ - if( rc==SQLITE_OK && needSync ){ - assert( !MEMDB ); - for(ii=0; iiflags |= PGHDR_NEED_SYNC; - sqlite3PagerUnref(pPage); - } - } - } - - assert( pPager->doNotSyncSpill==1 ); - pPager->doNotSyncSpill--; - }else{ - rc = pager_write(pDbPage); - } - return rc; -} - -/* -** Return TRUE if the page given in the argument was previously passed -** to sqlite3PagerWrite(). In other words, return TRUE if it is ok -** to change the content of the page. -*/ -#ifndef NDEBUG -int sqlite3PagerIswriteable(DbPage *pPg){ - return pPg->flags&PGHDR_DIRTY; -} -#endif - -/* -** A call to this routine tells the pager that it is not necessary to -** write the information on page pPg back to the disk, even though -** that page might be marked as dirty. This happens, for example, when -** the page has been added as a leaf of the freelist and so its -** content no longer matters. -** -** The overlying software layer calls this routine when all of the data -** on the given page is unused. The pager marks the page as clean so -** that it does not get written to disk. -** -** Tests show that this optimization can quadruple the speed of large -** DELETE operations. -*/ -void sqlite3PagerDontWrite(PgHdr *pPg){ - Pager *pPager = pPg->pPager; - if( (pPg->flags&PGHDR_DIRTY) && pPager->nSavepoint==0 ){ - PAGERTRACE(("DONT_WRITE page %d of %d\n", pPg->pgno, PAGERID(pPager))); - IOTRACE(("CLEAN %p %d\n", pPager, pPg->pgno)) - pPg->flags |= PGHDR_DONT_WRITE; - pager_set_pagehash(pPg); - } -} - -/* -** This routine is called to increment the value of the database file -** change-counter, stored as a 4-byte big-endian integer starting at -** byte offset 24 of the pager file. The secondary change counter at -** 92 is also updated, as is the SQLite version number at offset 96. -** -** But this only happens if the pPager->changeCountDone flag is false. -** To avoid excess churning of page 1, the update only happens once. -** See also the pager_write_changecounter() routine that does an -** unconditional update of the change counters. -** -** If the isDirectMode flag is zero, then this is done by calling -** sqlite3PagerWrite() on page 1, then modifying the contents of the -** page data. In this case the file will be updated when the current -** transaction is committed. -** -** The isDirectMode flag may only be non-zero if the library was compiled -** with the SQLITE_ENABLE_ATOMIC_WRITE macro defined. In this case, -** if isDirect is non-zero, then the database file is updated directly -** by writing an updated version of page 1 using a call to the -** sqlite3OsWrite() function. -*/ -static int pager_incr_changecounter(Pager *pPager, int isDirectMode){ - int rc = SQLITE_OK; - - assert( pPager->eState==PAGER_WRITER_CACHEMOD - || pPager->eState==PAGER_WRITER_DBMOD - ); - assert( assert_pager_state(pPager) ); - - /* Declare and initialize constant integer 'isDirect'. If the - ** atomic-write optimization is enabled in this build, then isDirect - ** is initialized to the value passed as the isDirectMode parameter - ** to this function. Otherwise, it is always set to zero. - ** - ** The idea is that if the atomic-write optimization is not - ** enabled at compile time, the compiler can omit the tests of - ** 'isDirect' below, as well as the block enclosed in the - ** "if( isDirect )" condition. - */ -#ifndef SQLITE_ENABLE_ATOMIC_WRITE -# define DIRECT_MODE 0 - assert( isDirectMode==0 ); - UNUSED_PARAMETER(isDirectMode); -#else -# define DIRECT_MODE isDirectMode -#endif - - if( !pPager->changeCountDone && pPager->dbSize>0 ){ - PgHdr *pPgHdr; /* Reference to page 1 */ - - assert( !pPager->tempFile && isOpen(pPager->fd) ); - - /* Open page 1 of the file for writing. */ - rc = sqlite3PagerGet(pPager, 1, &pPgHdr); - assert( pPgHdr==0 || rc==SQLITE_OK ); - - /* If page one was fetched successfully, and this function is not - ** operating in direct-mode, make page 1 writable. When not in - ** direct mode, page 1 is always held in cache and hence the PagerGet() - ** above is always successful - hence the ALWAYS on rc==SQLITE_OK. - */ - if( !DIRECT_MODE && ALWAYS(rc==SQLITE_OK) ){ - rc = sqlite3PagerWrite(pPgHdr); - } - - if( rc==SQLITE_OK ){ - /* Actually do the update of the change counter */ - pager_write_changecounter(pPgHdr); - - /* If running in direct mode, write the contents of page 1 to the file. */ - if( DIRECT_MODE ){ - const void *zBuf; - assert( pPager->dbFileSize>0 ); - CODEC2(pPager, pPgHdr->pData, 1, 6, rc=SQLITE_NOMEM, zBuf); - if( rc==SQLITE_OK ){ - rc = sqlite3OsWrite(pPager->fd, zBuf, pPager->pageSize, 0); - } - if( rc==SQLITE_OK ){ - pPager->changeCountDone = 1; - } - }else{ - pPager->changeCountDone = 1; - } - } - - /* Release the page reference. */ - sqlite3PagerUnref(pPgHdr); - } - return rc; -} - -/* -** Sync the database file to disk. This is a no-op for in-memory databases -** or pages with the Pager.noSync flag set. -** -** If successful, or if called on a pager for which it is a no-op, this -** function returns SQLITE_OK. Otherwise, an IO error code is returned. -*/ -int sqlite3PagerSync(Pager *pPager){ - int rc = SQLITE_OK; - if( !pPager->noSync ){ - assert( !MEMDB ); - rc = sqlite3OsSync(pPager->fd, pPager->syncFlags); - }else if( isOpen(pPager->fd) ){ - assert( !MEMDB ); - sqlite3OsFileControl(pPager->fd, SQLITE_FCNTL_SYNC_OMITTED, (void *)&rc); - } - return rc; -} - -/* -** This function may only be called while a write-transaction is active in -** rollback. If the connection is in WAL mode, this call is a no-op. -** Otherwise, if the connection does not already have an EXCLUSIVE lock on -** the database file, an attempt is made to obtain one. -** -** If the EXCLUSIVE lock is already held or the attempt to obtain it is -** successful, or the connection is in WAL mode, SQLITE_OK is returned. -** Otherwise, either SQLITE_BUSY or an SQLITE_IOERR_XXX error code is -** returned. -*/ -int sqlite3PagerExclusiveLock(Pager *pPager){ - int rc = SQLITE_OK; - assert( pPager->eState==PAGER_WRITER_CACHEMOD - || pPager->eState==PAGER_WRITER_DBMOD - || pPager->eState==PAGER_WRITER_LOCKED - ); - assert( assert_pager_state(pPager) ); - if( 0==pagerUseWal(pPager) ){ - rc = pager_wait_on_lock(pPager, EXCLUSIVE_LOCK); - } - return rc; -} - -/* -** Sync the database file for the pager pPager. zMaster points to the name -** of a master journal file that should be written into the individual -** journal file. zMaster may be NULL, which is interpreted as no master -** journal (a single database transaction). -** -** This routine ensures that: -** -** * The database file change-counter is updated, -** * the journal is synced (unless the atomic-write optimization is used), -** * all dirty pages are written to the database file, -** * the database file is truncated (if required), and -** * the database file synced. -** -** The only thing that remains to commit the transaction is to finalize -** (delete, truncate or zero the first part of) the journal file (or -** delete the master journal file if specified). -** -** Note that if zMaster==NULL, this does not overwrite a previous value -** passed to an sqlite3PagerCommitPhaseOne() call. -** -** If the final parameter - noSync - is true, then the database file itself -** is not synced. The caller must call sqlite3PagerSync() directly to -** sync the database file before calling CommitPhaseTwo() to delete the -** journal file in this case. -*/ -int sqlite3PagerCommitPhaseOne( - Pager *pPager, /* Pager object */ - const char *zMaster, /* If not NULL, the master journal name */ - int noSync /* True to omit the xSync on the db file */ -){ - int rc = SQLITE_OK; /* Return code */ - - assert( pPager->eState==PAGER_WRITER_LOCKED - || pPager->eState==PAGER_WRITER_CACHEMOD - || pPager->eState==PAGER_WRITER_DBMOD - || pPager->eState==PAGER_ERROR - ); - assert( assert_pager_state(pPager) ); - - /* If a prior error occurred, report that error again. */ - if( NEVER(pPager->errCode) ) return pPager->errCode; - - PAGERTRACE(("DATABASE SYNC: File=%s zMaster=%s nSize=%d\n", - pPager->zFilename, zMaster, pPager->dbSize)); - - /* If no database changes have been made, return early. */ - if( pPager->eStatepBackup); - }else{ - if( pagerUseWal(pPager) ){ - PgHdr *pList = sqlite3PcacheDirtyList(pPager->pPCache); - PgHdr *pPageOne = 0; - if( pList==0 ){ - /* Must have at least one page for the WAL commit flag. - ** Ticket [2d1a5c67dfc2363e44f29d9bbd57f] 2011-05-18 */ - rc = sqlite3PagerGet(pPager, 1, &pPageOne); - pList = pPageOne; - pList->pDirty = 0; - } - assert( rc==SQLITE_OK ); - if( ALWAYS(pList) ){ - rc = pagerWalFrames(pPager, pList, pPager->dbSize, 1, - (pPager->fullSync ? pPager->syncFlags : 0) - ); - } - sqlite3PagerUnref(pPageOne); - if( rc==SQLITE_OK ){ - sqlite3PcacheCleanAll(pPager->pPCache); - } - }else{ - /* The following block updates the change-counter. Exactly how it - ** does this depends on whether or not the atomic-update optimization - ** was enabled at compile time, and if this transaction meets the - ** runtime criteria to use the operation: - ** - ** * The file-system supports the atomic-write property for - ** blocks of size page-size, and - ** * This commit is not part of a multi-file transaction, and - ** * Exactly one page has been modified and store in the journal file. - ** - ** If the optimization was not enabled at compile time, then the - ** pager_incr_changecounter() function is called to update the change - ** counter in 'indirect-mode'. If the optimization is compiled in but - ** is not applicable to this transaction, call sqlite3JournalCreate() - ** to make sure the journal file has actually been created, then call - ** pager_incr_changecounter() to update the change-counter in indirect - ** mode. - ** - ** Otherwise, if the optimization is both enabled and applicable, - ** then call pager_incr_changecounter() to update the change-counter - ** in 'direct' mode. In this case the journal file will never be - ** created for this transaction. - */ - #ifdef SQLITE_ENABLE_ATOMIC_WRITE - PgHdr *pPg; - assert( isOpen(pPager->jfd) - || pPager->journalMode==PAGER_JOURNALMODE_OFF - || pPager->journalMode==PAGER_JOURNALMODE_WAL - ); - if( !zMaster && isOpen(pPager->jfd) - && pPager->journalOff==jrnlBufferSize(pPager) - && pPager->dbSize>=pPager->dbOrigSize - && (0==(pPg = sqlite3PcacheDirtyList(pPager->pPCache)) || 0==pPg->pDirty) - ){ - /* Update the db file change counter via the direct-write method. The - ** following call will modify the in-memory representation of page 1 - ** to include the updated change counter and then write page 1 - ** directly to the database file. Because of the atomic-write - ** property of the host file-system, this is safe. - */ - rc = pager_incr_changecounter(pPager, 1); - }else{ - rc = sqlite3JournalCreate(pPager->jfd); - if( rc==SQLITE_OK ){ - rc = pager_incr_changecounter(pPager, 0); - } - } - #else - rc = pager_incr_changecounter(pPager, 0); - #endif - if( rc!=SQLITE_OK ) goto commit_phase_one_exit; - - /* If this transaction has made the database smaller, then all pages - ** being discarded by the truncation must be written to the journal - ** file. This can only happen in auto-vacuum mode. - ** - ** Before reading the pages with page numbers larger than the - ** current value of Pager.dbSize, set dbSize back to the value - ** that it took at the start of the transaction. Otherwise, the - ** calls to sqlite3PagerGet() return zeroed pages instead of - ** reading data from the database file. - */ - #ifndef SQLITE_OMIT_AUTOVACUUM - if( pPager->dbSizedbOrigSize - && pPager->journalMode!=PAGER_JOURNALMODE_OFF - ){ - Pgno i; /* Iterator variable */ - const Pgno iSkip = PAGER_MJ_PGNO(pPager); /* Pending lock page */ - const Pgno dbSize = pPager->dbSize; /* Database image size */ - pPager->dbSize = pPager->dbOrigSize; - for( i=dbSize+1; i<=pPager->dbOrigSize; i++ ){ - if( !sqlite3BitvecTest(pPager->pInJournal, i) && i!=iSkip ){ - PgHdr *pPage; /* Page to journal */ - rc = sqlite3PagerGet(pPager, i, &pPage); - if( rc!=SQLITE_OK ) goto commit_phase_one_exit; - rc = sqlite3PagerWrite(pPage); - sqlite3PagerUnref(pPage); - if( rc!=SQLITE_OK ) goto commit_phase_one_exit; - } - } - pPager->dbSize = dbSize; - } - #endif - - /* Write the master journal name into the journal file. If a master - ** journal file name has already been written to the journal file, - ** or if zMaster is NULL (no master journal), then this call is a no-op. - */ - rc = writeMasterJournal(pPager, zMaster); - if( rc!=SQLITE_OK ) goto commit_phase_one_exit; - - /* Sync the journal file and write all dirty pages to the database. - ** If the atomic-update optimization is being used, this sync will not - ** create the journal file or perform any real IO. - ** - ** Because the change-counter page was just modified, unless the - ** atomic-update optimization is used it is almost certain that the - ** journal requires a sync here. However, in locking_mode=exclusive - ** on a system under memory pressure it is just possible that this is - ** not the case. In this case it is likely enough that the redundant - ** xSync() call will be changed to a no-op by the OS anyhow. - */ - rc = syncJournal(pPager, 0); - if( rc!=SQLITE_OK ) goto commit_phase_one_exit; - - rc = pager_write_pagelist(pPager,sqlite3PcacheDirtyList(pPager->pPCache)); - if( rc!=SQLITE_OK ){ - assert( rc!=SQLITE_IOERR_BLOCKED ); - goto commit_phase_one_exit; - } - sqlite3PcacheCleanAll(pPager->pPCache); - - /* If the file on disk is not the same size as the database image, - ** then use pager_truncate to grow or shrink the file here. - */ - if( pPager->dbSize!=pPager->dbFileSize ){ - Pgno nNew = pPager->dbSize - (pPager->dbSize==PAGER_MJ_PGNO(pPager)); - assert( pPager->eState==PAGER_WRITER_DBMOD ); - rc = pager_truncate(pPager, nNew); - if( rc!=SQLITE_OK ) goto commit_phase_one_exit; - } - - /* Finally, sync the database file. */ - if( !noSync ){ - rc = sqlite3PagerSync(pPager); - } - IOTRACE(("DBSYNC %p\n", pPager)) - } - } - -commit_phase_one_exit: - if( rc==SQLITE_OK && !pagerUseWal(pPager) ){ - pPager->eState = PAGER_WRITER_FINISHED; - } - return rc; -} - - -/* -** When this function is called, the database file has been completely -** updated to reflect the changes made by the current transaction and -** synced to disk. The journal file still exists in the file-system -** though, and if a failure occurs at this point it will eventually -** be used as a hot-journal and the current transaction rolled back. -** -** This function finalizes the journal file, either by deleting, -** truncating or partially zeroing it, so that it cannot be used -** for hot-journal rollback. Once this is done the transaction is -** irrevocably committed. -** -** If an error occurs, an IO error code is returned and the pager -** moves into the error state. Otherwise, SQLITE_OK is returned. -*/ -int sqlite3PagerCommitPhaseTwo(Pager *pPager){ - int rc = SQLITE_OK; /* Return code */ - - /* This routine should not be called if a prior error has occurred. - ** But if (due to a coding error elsewhere in the system) it does get - ** called, just return the same error code without doing anything. */ - if( NEVER(pPager->errCode) ) return pPager->errCode; - - assert( pPager->eState==PAGER_WRITER_LOCKED - || pPager->eState==PAGER_WRITER_FINISHED - || (pagerUseWal(pPager) && pPager->eState==PAGER_WRITER_CACHEMOD) - ); - assert( assert_pager_state(pPager) ); - - /* An optimization. If the database was not actually modified during - ** this transaction, the pager is running in exclusive-mode and is - ** using persistent journals, then this function is a no-op. - ** - ** The start of the journal file currently contains a single journal - ** header with the nRec field set to 0. If such a journal is used as - ** a hot-journal during hot-journal rollback, 0 changes will be made - ** to the database file. So there is no need to zero the journal - ** header. Since the pager is in exclusive mode, there is no need - ** to drop any locks either. - */ - if( pPager->eState==PAGER_WRITER_LOCKED - && pPager->exclusiveMode - && pPager->journalMode==PAGER_JOURNALMODE_PERSIST - ){ - assert( pPager->journalOff==JOURNAL_HDR_SZ(pPager) || !pPager->journalOff ); - pPager->eState = PAGER_READER; - return SQLITE_OK; - } - - PAGERTRACE(("COMMIT %d\n", PAGERID(pPager))); - rc = pager_end_transaction(pPager, pPager->setMaster); - return pager_error(pPager, rc); -} - -/* -** If a write transaction is open, then all changes made within the -** transaction are reverted and the current write-transaction is closed. -** The pager falls back to PAGER_READER state if successful, or PAGER_ERROR -** state if an error occurs. -** -** If the pager is already in PAGER_ERROR state when this function is called, -** it returns Pager.errCode immediately. No work is performed in this case. -** -** Otherwise, in rollback mode, this function performs two functions: -** -** 1) It rolls back the journal file, restoring all database file and -** in-memory cache pages to the state they were in when the transaction -** was opened, and -** -** 2) It finalizes the journal file, so that it is not used for hot -** rollback at any point in the future. -** -** Finalization of the journal file (task 2) is only performed if the -** rollback is successful. -** -** In WAL mode, all cache-entries containing data modified within the -** current transaction are either expelled from the cache or reverted to -** their pre-transaction state by re-reading data from the database or -** WAL files. The WAL transaction is then closed. -*/ -int sqlite3PagerRollback(Pager *pPager){ - int rc = SQLITE_OK; /* Return code */ - PAGERTRACE(("ROLLBACK %d\n", PAGERID(pPager))); - - /* PagerRollback() is a no-op if called in READER or OPEN state. If - ** the pager is already in the ERROR state, the rollback is not - ** attempted here. Instead, the error code is returned to the caller. - */ - assert( assert_pager_state(pPager) ); - if( pPager->eState==PAGER_ERROR ) return pPager->errCode; - if( pPager->eState<=PAGER_READER ) return SQLITE_OK; - - if( pagerUseWal(pPager) ){ - int rc2; - rc = sqlite3PagerSavepoint(pPager, SAVEPOINT_ROLLBACK, -1); - rc2 = pager_end_transaction(pPager, pPager->setMaster); - if( rc==SQLITE_OK ) rc = rc2; - }else if( !isOpen(pPager->jfd) || pPager->eState==PAGER_WRITER_LOCKED ){ - int eState = pPager->eState; - rc = pager_end_transaction(pPager, 0); - if( !MEMDB && eState>PAGER_WRITER_LOCKED ){ - /* This can happen using journal_mode=off. Move the pager to the error - ** state to indicate that the contents of the cache may not be trusted. - ** Any active readers will get SQLITE_ABORT. - */ - pPager->errCode = SQLITE_ABORT; - pPager->eState = PAGER_ERROR; - return rc; - } - }else{ - rc = pager_playback(pPager, 0); - } - - assert( pPager->eState==PAGER_READER || rc!=SQLITE_OK ); - assert( rc==SQLITE_OK || rc==SQLITE_FULL || (rc&0xFF)==SQLITE_IOERR ); - - /* If an error occurs during a ROLLBACK, we can no longer trust the pager - ** cache. So call pager_error() on the way out to make any error persistent. - */ - return pager_error(pPager, rc); -} - -/* -** Return TRUE if the database file is opened read-only. Return FALSE -** if the database is (in theory) writable. -*/ -u8 sqlite3PagerIsreadonly(Pager *pPager){ - return pPager->readOnly; -} - -/* -** Return the number of references to the pager. -*/ -int sqlite3PagerRefcount(Pager *pPager){ - return sqlite3PcacheRefCount(pPager->pPCache); -} - -/* -** Return the approximate number of bytes of memory currently -** used by the pager and its associated cache. -*/ -int sqlite3PagerMemUsed(Pager *pPager){ - int perPageSize = pPager->pageSize + pPager->nExtra + sizeof(PgHdr) - + 5*sizeof(void*); - return perPageSize*sqlite3PcachePagecount(pPager->pPCache) - + sqlite3MallocSize(pPager) - + pPager->pageSize; -} - -/* -** Return the number of references to the specified page. -*/ -int sqlite3PagerPageRefcount(DbPage *pPage){ - return sqlite3PcachePageRefcount(pPage); -} - -#ifdef SQLITE_TEST -/* -** This routine is used for testing and analysis only. -*/ -int *sqlite3PagerStats(Pager *pPager){ - static int a[11]; - a[0] = sqlite3PcacheRefCount(pPager->pPCache); - a[1] = sqlite3PcachePagecount(pPager->pPCache); - a[2] = sqlite3PcacheGetCachesize(pPager->pPCache); - a[3] = pPager->eState==PAGER_OPEN ? -1 : (int) pPager->dbSize; - a[4] = pPager->eState; - a[5] = pPager->errCode; - a[6] = pPager->nHit; - a[7] = pPager->nMiss; - a[8] = 0; /* Used to be pPager->nOvfl */ - a[9] = pPager->nRead; - a[10] = pPager->nWrite; - return a; -} -#endif - -/* -** Parameter eStat must be either SQLITE_DBSTATUS_CACHE_HIT or -** SQLITE_DBSTATUS_CACHE_MISS. Before returning, *pnVal is incremented by the -** current cache hit or miss count, according to the value of eStat. If the -** reset parameter is non-zero, the cache hit or miss count is zeroed before -** returning. -*/ -void sqlite3PagerCacheStat(Pager *pPager, int eStat, int reset, int *pnVal){ - int *piStat; - - assert( eStat==SQLITE_DBSTATUS_CACHE_HIT - || eStat==SQLITE_DBSTATUS_CACHE_MISS - ); - if( eStat==SQLITE_DBSTATUS_CACHE_HIT ){ - piStat = &pPager->nHit; - }else{ - piStat = &pPager->nMiss; - } - - *pnVal += *piStat; - if( reset ){ - *piStat = 0; - } -} - -/* -** Return true if this is an in-memory pager. -*/ -int sqlite3PagerIsMemdb(Pager *pPager){ - return MEMDB; -} - -/* -** Check that there are at least nSavepoint savepoints open. If there are -** currently less than nSavepoints open, then open one or more savepoints -** to make up the difference. If the number of savepoints is already -** equal to nSavepoint, then this function is a no-op. -** -** If a memory allocation fails, SQLITE_NOMEM is returned. If an error -** occurs while opening the sub-journal file, then an IO error code is -** returned. Otherwise, SQLITE_OK. -*/ -int sqlite3PagerOpenSavepoint(Pager *pPager, int nSavepoint){ - int rc = SQLITE_OK; /* Return code */ - int nCurrent = pPager->nSavepoint; /* Current number of savepoints */ - - assert( pPager->eState>=PAGER_WRITER_LOCKED ); - assert( assert_pager_state(pPager) ); - - if( nSavepoint>nCurrent && pPager->useJournal ){ - int ii; /* Iterator variable */ - PagerSavepoint *aNew; /* New Pager.aSavepoint array */ - - /* Grow the Pager.aSavepoint array using realloc(). Return SQLITE_NOMEM - ** if the allocation fails. Otherwise, zero the new portion in case a - ** malloc failure occurs while populating it in the for(...) loop below. - */ - aNew = (PagerSavepoint *)sqlite3Realloc( - pPager->aSavepoint, sizeof(PagerSavepoint)*nSavepoint - ); - if( !aNew ){ - return SQLITE_NOMEM; - } - memset(&aNew[nCurrent], 0, (nSavepoint-nCurrent) * sizeof(PagerSavepoint)); - pPager->aSavepoint = aNew; - - /* Populate the PagerSavepoint structures just allocated. */ - for(ii=nCurrent; iidbSize; - if( isOpen(pPager->jfd) && pPager->journalOff>0 ){ - aNew[ii].iOffset = pPager->journalOff; - }else{ - aNew[ii].iOffset = JOURNAL_HDR_SZ(pPager); - } - aNew[ii].iSubRec = pPager->nSubRec; - aNew[ii].pInSavepoint = sqlite3BitvecCreate(pPager->dbSize); - if( !aNew[ii].pInSavepoint ){ - return SQLITE_NOMEM; - } - if( pagerUseWal(pPager) ){ - sqlite3WalSavepoint(pPager->pWal, aNew[ii].aWalData); - } - pPager->nSavepoint = ii+1; - } - assert( pPager->nSavepoint==nSavepoint ); - assertTruncateConstraint(pPager); - } - - return rc; -} - -/* -** This function is called to rollback or release (commit) a savepoint. -** The savepoint to release or rollback need not be the most recently -** created savepoint. -** -** Parameter op is always either SAVEPOINT_ROLLBACK or SAVEPOINT_RELEASE. -** If it is SAVEPOINT_RELEASE, then release and destroy the savepoint with -** index iSavepoint. If it is SAVEPOINT_ROLLBACK, then rollback all changes -** that have occurred since the specified savepoint was created. -** -** The savepoint to rollback or release is identified by parameter -** iSavepoint. A value of 0 means to operate on the outermost savepoint -** (the first created). A value of (Pager.nSavepoint-1) means operate -** on the most recently created savepoint. If iSavepoint is greater than -** (Pager.nSavepoint-1), then this function is a no-op. -** -** If a negative value is passed to this function, then the current -** transaction is rolled back. This is different to calling -** sqlite3PagerRollback() because this function does not terminate -** the transaction or unlock the database, it just restores the -** contents of the database to its original state. -** -** In any case, all savepoints with an index greater than iSavepoint -** are destroyed. If this is a release operation (op==SAVEPOINT_RELEASE), -** then savepoint iSavepoint is also destroyed. -** -** This function may return SQLITE_NOMEM if a memory allocation fails, -** or an IO error code if an IO error occurs while rolling back a -** savepoint. If no errors occur, SQLITE_OK is returned. -*/ -int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint){ - int rc = pPager->errCode; /* Return code */ - - assert( op==SAVEPOINT_RELEASE || op==SAVEPOINT_ROLLBACK ); - assert( iSavepoint>=0 || op==SAVEPOINT_ROLLBACK ); - - if( rc==SQLITE_OK && iSavepointnSavepoint ){ - int ii; /* Iterator variable */ - int nNew; /* Number of remaining savepoints after this op. */ - - /* Figure out how many savepoints will still be active after this - ** operation. Store this value in nNew. Then free resources associated - ** with any savepoints that are destroyed by this operation. - */ - nNew = iSavepoint + (( op==SAVEPOINT_RELEASE ) ? 0 : 1); - for(ii=nNew; iinSavepoint; ii++){ - sqlite3BitvecDestroy(pPager->aSavepoint[ii].pInSavepoint); - } - pPager->nSavepoint = nNew; - - /* If this is a release of the outermost savepoint, truncate - ** the sub-journal to zero bytes in size. */ - if( op==SAVEPOINT_RELEASE ){ - if( nNew==0 && isOpen(pPager->sjfd) ){ - /* Only truncate if it is an in-memory sub-journal. */ - if( sqlite3IsMemJournal(pPager->sjfd) ){ - rc = sqlite3OsTruncate(pPager->sjfd, 0); - assert( rc==SQLITE_OK ); - } - pPager->nSubRec = 0; - } - } - /* Else this is a rollback operation, playback the specified savepoint. - ** If this is a temp-file, it is possible that the journal file has - ** not yet been opened. In this case there have been no changes to - ** the database file, so the playback operation can be skipped. - */ - else if( pagerUseWal(pPager) || isOpen(pPager->jfd) ){ - PagerSavepoint *pSavepoint = (nNew==0)?0:&pPager->aSavepoint[nNew-1]; - rc = pagerPlaybackSavepoint(pPager, pSavepoint); - assert(rc!=SQLITE_DONE); - } - } - - return rc; -} - -/* -** Return the full pathname of the database file. -*/ -const char *sqlite3PagerFilename(Pager *pPager){ - return pPager->zFilename; -} - -/* -** Return the VFS structure for the pager. -*/ -const sqlite3_vfs *sqlite3PagerVfs(Pager *pPager){ - return pPager->pVfs; -} - -/* -** Return the file handle for the database file associated -** with the pager. This might return NULL if the file has -** not yet been opened. -*/ -sqlite3_file *sqlite3PagerFile(Pager *pPager){ - return pPager->fd; -} - -/* -** Return the full pathname of the journal file. -*/ -const char *sqlite3PagerJournalname(Pager *pPager){ - return pPager->zJournal; -} - -/* -** Return true if fsync() calls are disabled for this pager. Return FALSE -** if fsync()s are executed normally. -*/ -int sqlite3PagerNosync(Pager *pPager){ - return pPager->noSync; -} - -#ifdef SQLITE_HAS_CODEC -/* -** Set or retrieve the codec for this pager -*/ -void sqlite3PagerSetCodec( - Pager *pPager, - void *(*xCodec)(void*,void*,Pgno,int), - void (*xCodecSizeChng)(void*,int,int), - void (*xCodecFree)(void*), - void *pCodec -){ - if( pPager->xCodecFree ) pPager->xCodecFree(pPager->pCodec); - pPager->xCodec = pPager->memDb ? 0 : xCodec; - pPager->xCodecSizeChng = xCodecSizeChng; - pPager->xCodecFree = xCodecFree; - pPager->pCodec = pCodec; - pagerReportSize(pPager); -} -void *sqlite3PagerGetCodec(Pager *pPager){ - return pPager->pCodec; -} -#endif - -#ifndef SQLITE_OMIT_AUTOVACUUM -/* -** Move the page pPg to location pgno in the file. -** -** There must be no references to the page previously located at -** pgno (which we call pPgOld) though that page is allowed to be -** in cache. If the page previously located at pgno is not already -** in the rollback journal, it is not put there by by this routine. -** -** References to the page pPg remain valid. Updating any -** meta-data associated with pPg (i.e. data stored in the nExtra bytes -** allocated along with the page) is the responsibility of the caller. -** -** A transaction must be active when this routine is called. It used to be -** required that a statement transaction was not active, but this restriction -** has been removed (CREATE INDEX needs to move a page when a statement -** transaction is active). -** -** If the fourth argument, isCommit, is non-zero, then this page is being -** moved as part of a database reorganization just before the transaction -** is being committed. In this case, it is guaranteed that the database page -** pPg refers to will not be written to again within this transaction. -** -** This function may return SQLITE_NOMEM or an IO error code if an error -** occurs. Otherwise, it returns SQLITE_OK. -*/ -int sqlite3PagerMovepage(Pager *pPager, DbPage *pPg, Pgno pgno, int isCommit){ - PgHdr *pPgOld; /* The page being overwritten. */ - Pgno needSyncPgno = 0; /* Old value of pPg->pgno, if sync is required */ - int rc; /* Return code */ - Pgno origPgno; /* The original page number */ - - assert( pPg->nRef>0 ); - assert( pPager->eState==PAGER_WRITER_CACHEMOD - || pPager->eState==PAGER_WRITER_DBMOD - ); - assert( assert_pager_state(pPager) ); - - /* In order to be able to rollback, an in-memory database must journal - ** the page we are moving from. - */ - if( MEMDB ){ - rc = sqlite3PagerWrite(pPg); - if( rc ) return rc; - } - - /* If the page being moved is dirty and has not been saved by the latest - ** savepoint, then save the current contents of the page into the - ** sub-journal now. This is required to handle the following scenario: - ** - ** BEGIN; - ** - ** SAVEPOINT one; - ** - ** ROLLBACK TO one; - ** - ** If page X were not written to the sub-journal here, it would not - ** be possible to restore its contents when the "ROLLBACK TO one" - ** statement were is processed. - ** - ** subjournalPage() may need to allocate space to store pPg->pgno into - ** one or more savepoint bitvecs. This is the reason this function - ** may return SQLITE_NOMEM. - */ - if( pPg->flags&PGHDR_DIRTY - && subjRequiresPage(pPg) - && SQLITE_OK!=(rc = subjournalPage(pPg)) - ){ - return rc; - } - - PAGERTRACE(("MOVE %d page %d (needSync=%d) moves to %d\n", - PAGERID(pPager), pPg->pgno, (pPg->flags&PGHDR_NEED_SYNC)?1:0, pgno)); - IOTRACE(("MOVE %p %d %d\n", pPager, pPg->pgno, pgno)) - - /* If the journal needs to be sync()ed before page pPg->pgno can - ** be written to, store pPg->pgno in local variable needSyncPgno. - ** - ** If the isCommit flag is set, there is no need to remember that - ** the journal needs to be sync()ed before database page pPg->pgno - ** can be written to. The caller has already promised not to write to it. - */ - if( (pPg->flags&PGHDR_NEED_SYNC) && !isCommit ){ - needSyncPgno = pPg->pgno; - assert( pageInJournal(pPg) || pPg->pgno>pPager->dbOrigSize ); - assert( pPg->flags&PGHDR_DIRTY ); - } - - /* If the cache contains a page with page-number pgno, remove it - ** from its hash chain. Also, if the PGHDR_NEED_SYNC flag was set for - ** page pgno before the 'move' operation, it needs to be retained - ** for the page moved there. - */ - pPg->flags &= ~PGHDR_NEED_SYNC; - pPgOld = pager_lookup(pPager, pgno); - assert( !pPgOld || pPgOld->nRef==1 ); - if( pPgOld ){ - pPg->flags |= (pPgOld->flags&PGHDR_NEED_SYNC); - if( MEMDB ){ - /* Do not discard pages from an in-memory database since we might - ** need to rollback later. Just move the page out of the way. */ - sqlite3PcacheMove(pPgOld, pPager->dbSize+1); - }else{ - sqlite3PcacheDrop(pPgOld); - } - } - - origPgno = pPg->pgno; - sqlite3PcacheMove(pPg, pgno); - sqlite3PcacheMakeDirty(pPg); - - /* For an in-memory database, make sure the original page continues - ** to exist, in case the transaction needs to roll back. Use pPgOld - ** as the original page since it has already been allocated. - */ - if( MEMDB ){ - assert( pPgOld ); - sqlite3PcacheMove(pPgOld, origPgno); - sqlite3PagerUnref(pPgOld); - } - - if( needSyncPgno ){ - /* If needSyncPgno is non-zero, then the journal file needs to be - ** sync()ed before any data is written to database file page needSyncPgno. - ** Currently, no such page exists in the page-cache and the - ** "is journaled" bitvec flag has been set. This needs to be remedied by - ** loading the page into the pager-cache and setting the PGHDR_NEED_SYNC - ** flag. - ** - ** If the attempt to load the page into the page-cache fails, (due - ** to a malloc() or IO failure), clear the bit in the pInJournal[] - ** array. Otherwise, if the page is loaded and written again in - ** this transaction, it may be written to the database file before - ** it is synced into the journal file. This way, it may end up in - ** the journal file twice, but that is not a problem. - */ - PgHdr *pPgHdr; - rc = sqlite3PagerGet(pPager, needSyncPgno, &pPgHdr); - if( rc!=SQLITE_OK ){ - if( needSyncPgno<=pPager->dbOrigSize ){ - assert( pPager->pTmpSpace!=0 ); - sqlite3BitvecClear(pPager->pInJournal, needSyncPgno, pPager->pTmpSpace); - } - return rc; - } - pPgHdr->flags |= PGHDR_NEED_SYNC; - sqlite3PcacheMakeDirty(pPgHdr); - sqlite3PagerUnref(pPgHdr); - } - - return SQLITE_OK; -} -#endif - -/* -** Return a pointer to the data for the specified page. -*/ -void *sqlite3PagerGetData(DbPage *pPg){ - assert( pPg->nRef>0 || pPg->pPager->memDb ); - return pPg->pData; -} - -/* -** Return a pointer to the Pager.nExtra bytes of "extra" space -** allocated along with the specified page. -*/ -void *sqlite3PagerGetExtra(DbPage *pPg){ - return pPg->pExtra; -} - -/* -** Get/set the locking-mode for this pager. Parameter eMode must be one -** of PAGER_LOCKINGMODE_QUERY, PAGER_LOCKINGMODE_NORMAL or -** PAGER_LOCKINGMODE_EXCLUSIVE. If the parameter is not _QUERY, then -** the locking-mode is set to the value specified. -** -** The returned value is either PAGER_LOCKINGMODE_NORMAL or -** PAGER_LOCKINGMODE_EXCLUSIVE, indicating the current (possibly updated) -** locking-mode. -*/ -int sqlite3PagerLockingMode(Pager *pPager, int eMode){ - assert( eMode==PAGER_LOCKINGMODE_QUERY - || eMode==PAGER_LOCKINGMODE_NORMAL - || eMode==PAGER_LOCKINGMODE_EXCLUSIVE ); - assert( PAGER_LOCKINGMODE_QUERY<0 ); - assert( PAGER_LOCKINGMODE_NORMAL>=0 && PAGER_LOCKINGMODE_EXCLUSIVE>=0 ); - assert( pPager->exclusiveMode || 0==sqlite3WalHeapMemory(pPager->pWal) ); - if( eMode>=0 && !pPager->tempFile && !sqlite3WalHeapMemory(pPager->pWal) ){ - pPager->exclusiveMode = (u8)eMode; - } - return (int)pPager->exclusiveMode; -} - -/* -** Set the journal-mode for this pager. Parameter eMode must be one of: -** -** PAGER_JOURNALMODE_DELETE -** PAGER_JOURNALMODE_TRUNCATE -** PAGER_JOURNALMODE_PERSIST -** PAGER_JOURNALMODE_OFF -** PAGER_JOURNALMODE_MEMORY -** PAGER_JOURNALMODE_WAL -** -** The journalmode is set to the value specified if the change is allowed. -** The change may be disallowed for the following reasons: -** -** * An in-memory database can only have its journal_mode set to _OFF -** or _MEMORY. -** -** * Temporary databases cannot have _WAL journalmode. -** -** The returned indicate the current (possibly updated) journal-mode. -*/ -int sqlite3PagerSetJournalMode(Pager *pPager, int eMode){ - u8 eOld = pPager->journalMode; /* Prior journalmode */ - -#ifdef SQLITE_DEBUG - /* The print_pager_state() routine is intended to be used by the debugger - ** only. We invoke it once here to suppress a compiler warning. */ - print_pager_state(pPager); -#endif - - - /* The eMode parameter is always valid */ - assert( eMode==PAGER_JOURNALMODE_DELETE - || eMode==PAGER_JOURNALMODE_TRUNCATE - || eMode==PAGER_JOURNALMODE_PERSIST - || eMode==PAGER_JOURNALMODE_OFF - || eMode==PAGER_JOURNALMODE_WAL - || eMode==PAGER_JOURNALMODE_MEMORY ); - - /* This routine is only called from the OP_JournalMode opcode, and - ** the logic there will never allow a temporary file to be changed - ** to WAL mode. - */ - assert( pPager->tempFile==0 || eMode!=PAGER_JOURNALMODE_WAL ); - - /* Do allow the journalmode of an in-memory database to be set to - ** anything other than MEMORY or OFF - */ - if( MEMDB ){ - assert( eOld==PAGER_JOURNALMODE_MEMORY || eOld==PAGER_JOURNALMODE_OFF ); - if( eMode!=PAGER_JOURNALMODE_MEMORY && eMode!=PAGER_JOURNALMODE_OFF ){ - eMode = eOld; - } - } - - if( eMode!=eOld ){ - - /* Change the journal mode. */ - assert( pPager->eState!=PAGER_ERROR ); - pPager->journalMode = (u8)eMode; - - /* When transistioning from TRUNCATE or PERSIST to any other journal - ** mode except WAL, unless the pager is in locking_mode=exclusive mode, - ** delete the journal file. - */ - assert( (PAGER_JOURNALMODE_TRUNCATE & 5)==1 ); - assert( (PAGER_JOURNALMODE_PERSIST & 5)==1 ); - assert( (PAGER_JOURNALMODE_DELETE & 5)==0 ); - assert( (PAGER_JOURNALMODE_MEMORY & 5)==4 ); - assert( (PAGER_JOURNALMODE_OFF & 5)==0 ); - assert( (PAGER_JOURNALMODE_WAL & 5)==5 ); - - assert( isOpen(pPager->fd) || pPager->exclusiveMode ); - if( !pPager->exclusiveMode && (eOld & 5)==1 && (eMode & 1)==0 ){ - - /* In this case we would like to delete the journal file. If it is - ** not possible, then that is not a problem. Deleting the journal file - ** here is an optimization only. - ** - ** Before deleting the journal file, obtain a RESERVED lock on the - ** database file. This ensures that the journal file is not deleted - ** while it is in use by some other client. - */ - sqlite3OsClose(pPager->jfd); - if( pPager->eLock>=RESERVED_LOCK ){ - sqlite3OsDelete(pPager->pVfs, pPager->zJournal, 0); - }else{ - int rc = SQLITE_OK; - int state = pPager->eState; - assert( state==PAGER_OPEN || state==PAGER_READER ); - if( state==PAGER_OPEN ){ - rc = sqlite3PagerSharedLock(pPager); - } - if( pPager->eState==PAGER_READER ){ - assert( rc==SQLITE_OK ); - rc = pagerLockDb(pPager, RESERVED_LOCK); - } - if( rc==SQLITE_OK ){ - sqlite3OsDelete(pPager->pVfs, pPager->zJournal, 0); - } - if( rc==SQLITE_OK && state==PAGER_READER ){ - pagerUnlockDb(pPager, SHARED_LOCK); - }else if( state==PAGER_OPEN ){ - pager_unlock(pPager); - } - assert( state==pPager->eState ); - } - } - } - - /* Return the new journal mode */ - return (int)pPager->journalMode; -} - -/* -** Return the current journal mode. -*/ -int sqlite3PagerGetJournalMode(Pager *pPager){ - return (int)pPager->journalMode; -} - -/* -** Return TRUE if the pager is in a state where it is OK to change the -** journalmode. Journalmode changes can only happen when the database -** is unmodified. -*/ -int sqlite3PagerOkToChangeJournalMode(Pager *pPager){ - assert( assert_pager_state(pPager) ); - if( pPager->eState>=PAGER_WRITER_CACHEMOD ) return 0; - if( NEVER(isOpen(pPager->jfd) && pPager->journalOff>0) ) return 0; - return 1; -} - -/* -** Get/set the size-limit used for persistent journal files. -** -** Setting the size limit to -1 means no limit is enforced. -** An attempt to set a limit smaller than -1 is a no-op. -*/ -i64 sqlite3PagerJournalSizeLimit(Pager *pPager, i64 iLimit){ - if( iLimit>=-1 ){ - pPager->journalSizeLimit = iLimit; - sqlite3WalLimit(pPager->pWal, iLimit); - } - return pPager->journalSizeLimit; -} - -/* -** Return a pointer to the pPager->pBackup variable. The backup module -** in backup.c maintains the content of this variable. This module -** uses it opaquely as an argument to sqlite3BackupRestart() and -** sqlite3BackupUpdate() only. -*/ -sqlite3_backup **sqlite3PagerBackupPtr(Pager *pPager){ - return &pPager->pBackup; -} - -#ifndef SQLITE_OMIT_WAL -/* -** This function is called when the user invokes "PRAGMA wal_checkpoint", -** "PRAGMA wal_blocking_checkpoint" or calls the sqlite3_wal_checkpoint() -** or wal_blocking_checkpoint() API functions. -** -** Parameter eMode is one of SQLITE_CHECKPOINT_PASSIVE, FULL or RESTART. -*/ -int sqlite3PagerCheckpoint(Pager *pPager, int eMode, int *pnLog, int *pnCkpt){ - int rc = SQLITE_OK; - if( pPager->pWal ){ - rc = sqlite3WalCheckpoint(pPager->pWal, eMode, - pPager->xBusyHandler, pPager->pBusyHandlerArg, - pPager->ckptSyncFlags, pPager->pageSize, (u8 *)pPager->pTmpSpace, - pnLog, pnCkpt - ); - } - return rc; -} - -int sqlite3PagerWalCallback(Pager *pPager){ - return sqlite3WalCallback(pPager->pWal); -} - -/* -** Return true if the underlying VFS for the given pager supports the -** primitives necessary for write-ahead logging. -*/ -int sqlite3PagerWalSupported(Pager *pPager){ - const sqlite3_io_methods *pMethods = pPager->fd->pMethods; - return pPager->exclusiveMode || (pMethods->iVersion>=2 && pMethods->xShmMap); -} - -/* -** Attempt to take an exclusive lock on the database file. If a PENDING lock -** is obtained instead, immediately release it. -*/ -static int pagerExclusiveLock(Pager *pPager){ - int rc; /* Return code */ - - assert( pPager->eLock==SHARED_LOCK || pPager->eLock==EXCLUSIVE_LOCK ); - rc = pagerLockDb(pPager, EXCLUSIVE_LOCK); - if( rc!=SQLITE_OK ){ - /* If the attempt to grab the exclusive lock failed, release the - ** pending lock that may have been obtained instead. */ - pagerUnlockDb(pPager, SHARED_LOCK); - } - - return rc; -} - -/* -** Call sqlite3WalOpen() to open the WAL handle. If the pager is in -** exclusive-locking mode when this function is called, take an EXCLUSIVE -** lock on the database file and use heap-memory to store the wal-index -** in. Otherwise, use the normal shared-memory. -*/ -static int pagerOpenWal(Pager *pPager){ - int rc = SQLITE_OK; - - assert( pPager->pWal==0 && pPager->tempFile==0 ); - assert( pPager->eLock==SHARED_LOCK || pPager->eLock==EXCLUSIVE_LOCK || pPager->noReadlock); - - /* If the pager is already in exclusive-mode, the WAL module will use - ** heap-memory for the wal-index instead of the VFS shared-memory - ** implementation. Take the exclusive lock now, before opening the WAL - ** file, to make sure this is safe. - */ - if( pPager->exclusiveMode ){ - rc = pagerExclusiveLock(pPager); - } - - /* Open the connection to the log file. If this operation fails, - ** (e.g. due to malloc() failure), return an error code. - */ - if( rc==SQLITE_OK ){ - rc = sqlite3WalOpen(pPager->pVfs, - pPager->fd, pPager->zWal, pPager->exclusiveMode, - pPager->journalSizeLimit, &pPager->pWal - ); - } - - return rc; -} - - -/* -** The caller must be holding a SHARED lock on the database file to call -** this function. -** -** If the pager passed as the first argument is open on a real database -** file (not a temp file or an in-memory database), and the WAL file -** is not already open, make an attempt to open it now. If successful, -** return SQLITE_OK. If an error occurs or the VFS used by the pager does -** not support the xShmXXX() methods, return an error code. *pbOpen is -** not modified in either case. -** -** If the pager is open on a temp-file (or in-memory database), or if -** the WAL file is already open, set *pbOpen to 1 and return SQLITE_OK -** without doing anything. -*/ -int sqlite3PagerOpenWal( - Pager *pPager, /* Pager object */ - int *pbOpen /* OUT: Set to true if call is a no-op */ -){ - int rc = SQLITE_OK; /* Return code */ - - assert( assert_pager_state(pPager) ); - assert( pPager->eState==PAGER_OPEN || pbOpen ); - assert( pPager->eState==PAGER_READER || !pbOpen ); - assert( pbOpen==0 || *pbOpen==0 ); - assert( pbOpen!=0 || (!pPager->tempFile && !pPager->pWal) ); - - if( !pPager->tempFile && !pPager->pWal ){ - if( !sqlite3PagerWalSupported(pPager) ) return SQLITE_CANTOPEN; - - /* Close any rollback journal previously open */ - sqlite3OsClose(pPager->jfd); - - rc = pagerOpenWal(pPager); - if( rc==SQLITE_OK ){ - pPager->journalMode = PAGER_JOURNALMODE_WAL; - pPager->eState = PAGER_OPEN; - } - }else{ - *pbOpen = 1; - } - - return rc; -} - -/* -** This function is called to close the connection to the log file prior -** to switching from WAL to rollback mode. -** -** Before closing the log file, this function attempts to take an -** EXCLUSIVE lock on the database file. If this cannot be obtained, an -** error (SQLITE_BUSY) is returned and the log connection is not closed. -** If successful, the EXCLUSIVE lock is not released before returning. -*/ -int sqlite3PagerCloseWal(Pager *pPager){ - int rc = SQLITE_OK; - - assert( pPager->journalMode==PAGER_JOURNALMODE_WAL ); - - /* If the log file is not already open, but does exist in the file-system, - ** it may need to be checkpointed before the connection can switch to - ** rollback mode. Open it now so this can happen. - */ - if( !pPager->pWal ){ - int logexists = 0; - rc = pagerLockDb(pPager, SHARED_LOCK); - if( rc==SQLITE_OK ){ - rc = sqlite3OsAccess( - pPager->pVfs, pPager->zWal, SQLITE_ACCESS_EXISTS, &logexists - ); - } - if( rc==SQLITE_OK && logexists ){ - rc = pagerOpenWal(pPager); - } - } - - /* Checkpoint and close the log. Because an EXCLUSIVE lock is held on - ** the database file, the log and log-summary files will be deleted. - */ - if( rc==SQLITE_OK && pPager->pWal ){ - rc = pagerExclusiveLock(pPager); - if( rc==SQLITE_OK ){ - rc = sqlite3WalClose(pPager->pWal, pPager->ckptSyncFlags, - pPager->pageSize, (u8*)pPager->pTmpSpace); - pPager->pWal = 0; - } - } - return rc; -} - -/* -** Unless this is an in-memory or temporary database, clear the pager cache. -*/ -void sqlite3PagerClearCache(Pager *pPager){ - if( !MEMDB && pPager->tempFile==0 ) pager_reset(pPager); -} - -#ifdef SQLITE_HAS_CODEC -/* -** This function is called by the wal module when writing page content -** into the log file. -** -** This function returns a pointer to a buffer containing the encrypted -** page content. If a malloc fails, this function may return NULL. -*/ -void *sqlite3PagerCodec(PgHdr *pPg){ - void *aData = 0; - CODEC2(pPg->pPager, pPg->pData, pPg->pgno, 6, return 0, aData); - return aData; -} -#endif /* SQLITE_HAS_CODEC */ - -#endif /* !SQLITE_OMIT_WAL */ - -#endif /* SQLITE_OMIT_DISKIO */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/pager.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/pager.h deleted file mode 100644 index 86037eb3c7..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/pager.h +++ /dev/null @@ -1,183 +0,0 @@ -/* -** 2001 September 15 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This header file defines the interface that the sqlite page cache -** subsystem. The page cache subsystem reads and writes a file a page -** at a time and provides a journal for rollback. -*/ - -#ifndef _PAGER_H_ -#define _PAGER_H_ - -/* -** Default maximum size for persistent journal files. A negative -** value means no limit. This value may be overridden using the -** sqlite3PagerJournalSizeLimit() API. See also "PRAGMA journal_size_limit". -*/ -#ifndef SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT - #define SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT -1 -#endif - -/* -** The type used to represent a page number. The first page in a file -** is called page 1. 0 is used to represent "not a page". -*/ -typedef u32 Pgno; - -/* -** Each open file is managed by a separate instance of the "Pager" structure. -*/ -typedef struct Pager Pager; - -/* -** Handle type for pages. -*/ -typedef struct PgHdr DbPage; - -/* -** Page number PAGER_MJ_PGNO is never used in an SQLite database (it is -** reserved for working around a windows/posix incompatibility). It is -** used in the journal to signify that the remainder of the journal file -** is devoted to storing a master journal name - there are no more pages to -** roll back. See comments for function writeMasterJournal() in pager.c -** for details. -*/ -#define PAGER_MJ_PGNO(x) ((Pgno)((PENDING_BYTE/((x)->pageSize))+1)) - -/* -** Allowed values for the flags parameter to sqlite3PagerOpen(). -** -** NOTE: These values must match the corresponding BTREE_ values in btree.h. -*/ -#define PAGER_OMIT_JOURNAL 0x0001 /* Do not use a rollback journal */ -#define PAGER_NO_READLOCK 0x0002 /* Omit readlocks on readonly files */ -#define PAGER_MEMORY 0x0004 /* In-memory database */ - -/* -** Valid values for the second argument to sqlite3PagerLockingMode(). -*/ -#define PAGER_LOCKINGMODE_QUERY -1 -#define PAGER_LOCKINGMODE_NORMAL 0 -#define PAGER_LOCKINGMODE_EXCLUSIVE 1 - -/* -** Numeric constants that encode the journalmode. -*/ -#define PAGER_JOURNALMODE_QUERY (-1) /* Query the value of journalmode */ -#define PAGER_JOURNALMODE_DELETE 0 /* Commit by deleting journal file */ -#define PAGER_JOURNALMODE_PERSIST 1 /* Commit by zeroing journal header */ -#define PAGER_JOURNALMODE_OFF 2 /* Journal omitted. */ -#define PAGER_JOURNALMODE_TRUNCATE 3 /* Commit by truncating journal */ -#define PAGER_JOURNALMODE_MEMORY 4 /* In-memory journal file */ -#define PAGER_JOURNALMODE_WAL 5 /* Use write-ahead logging */ - -/* -** The remainder of this file contains the declarations of the functions -** that make up the Pager sub-system API. See source code comments for -** a detailed description of each routine. -*/ - -/* Open and close a Pager connection. */ -int sqlite3PagerOpen( - sqlite3_vfs*, - Pager **ppPager, - const char*, - int, - int, - int, - void(*)(DbPage*) -); -int sqlite3PagerClose(Pager *pPager); -int sqlite3PagerReadFileheader(Pager*, int, unsigned char*); - -/* Functions used to configure a Pager object. */ -void sqlite3PagerSetBusyhandler(Pager*, int(*)(void *), void *); -int sqlite3PagerSetPagesize(Pager*, u32*, int); -int sqlite3PagerMaxPageCount(Pager*, int); -void sqlite3PagerSetCachesize(Pager*, int); -void sqlite3PagerSetSafetyLevel(Pager*,int,int,int); -int sqlite3PagerLockingMode(Pager *, int); -int sqlite3PagerSetJournalMode(Pager *, int); -int sqlite3PagerGetJournalMode(Pager*); -int sqlite3PagerOkToChangeJournalMode(Pager*); -i64 sqlite3PagerJournalSizeLimit(Pager *, i64); -sqlite3_backup **sqlite3PagerBackupPtr(Pager*); - -/* Functions used to obtain and release page references. */ -int sqlite3PagerAcquire(Pager *pPager, Pgno pgno, DbPage **ppPage, int clrFlag); -#define sqlite3PagerGet(A,B,C) sqlite3PagerAcquire(A,B,C,0) -DbPage *sqlite3PagerLookup(Pager *pPager, Pgno pgno); -void sqlite3PagerRef(DbPage*); -void sqlite3PagerUnref(DbPage*); - -/* Operations on page references. */ -int sqlite3PagerWrite(DbPage*); -void sqlite3PagerDontWrite(DbPage*); -int sqlite3PagerMovepage(Pager*,DbPage*,Pgno,int); -int sqlite3PagerPageRefcount(DbPage*); -void *sqlite3PagerGetData(DbPage *); -void *sqlite3PagerGetExtra(DbPage *); - -/* Functions used to manage pager transactions and savepoints. */ -void sqlite3PagerPagecount(Pager*, int*); -int sqlite3PagerBegin(Pager*, int exFlag, int); -int sqlite3PagerCommitPhaseOne(Pager*,const char *zMaster, int); -int sqlite3PagerExclusiveLock(Pager*); -int sqlite3PagerSync(Pager *pPager); -int sqlite3PagerCommitPhaseTwo(Pager*); -int sqlite3PagerRollback(Pager*); -int sqlite3PagerOpenSavepoint(Pager *pPager, int n); -int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint); -int sqlite3PagerSharedLock(Pager *pPager); - -int sqlite3PagerCheckpoint(Pager *pPager, int, int*, int*); -int sqlite3PagerWalSupported(Pager *pPager); -int sqlite3PagerWalCallback(Pager *pPager); -int sqlite3PagerOpenWal(Pager *pPager, int *pisOpen); -int sqlite3PagerCloseWal(Pager *pPager); - -/* Functions used to query pager state and configuration. */ -u8 sqlite3PagerIsreadonly(Pager*); -int sqlite3PagerRefcount(Pager*); -int sqlite3PagerMemUsed(Pager*); -const char *sqlite3PagerFilename(Pager*); -const sqlite3_vfs *sqlite3PagerVfs(Pager*); -sqlite3_file *sqlite3PagerFile(Pager*); -const char *sqlite3PagerJournalname(Pager*); -int sqlite3PagerNosync(Pager*); -void *sqlite3PagerTempSpace(Pager*); -int sqlite3PagerIsMemdb(Pager*); -void sqlite3PagerCacheStat(Pager *, int, int, int *); -void sqlite3PagerClearCache(Pager *); - -/* Functions used to truncate the database file. */ -void sqlite3PagerTruncateImage(Pager*,Pgno); - -#if defined(SQLITE_HAS_CODEC) && !defined(SQLITE_OMIT_WAL) -void *sqlite3PagerCodec(DbPage *); -#endif - -/* Functions to support testing and debugging. */ -#if !defined(NDEBUG) || defined(SQLITE_TEST) - Pgno sqlite3PagerPagenumber(DbPage*); - int sqlite3PagerIswriteable(DbPage*); -#endif -#ifdef SQLITE_TEST - int *sqlite3PagerStats(Pager*); - void sqlite3PagerRefdump(Pager*); - void disable_simulated_io_errors(void); - void enable_simulated_io_errors(void); -#else -# define disable_simulated_io_errors() -# define enable_simulated_io_errors() -#endif - -#endif /* _PAGER_H_ */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/parse.y b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/parse.y deleted file mode 100644 index 6e93f39387..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/parse.y +++ /dev/null @@ -1,1371 +0,0 @@ -/* -** 2001 September 15 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file contains SQLite's grammar for SQL. Process this file -** using the lemon parser generator to generate C code that runs -** the parser. Lemon will also generate a header file containing -** numeric codes for all of the tokens. -*/ - -// All token codes are small integers with #defines that begin with "TK_" -%token_prefix TK_ - -// The type of the data attached to each token is Token. This is also the -// default type for non-terminals. -// -%token_type {Token} -%default_type {Token} - -// The generated parser function takes a 4th argument as follows: -%extra_argument {Parse *pParse} - -// This code runs whenever there is a syntax error -// -%syntax_error { - UNUSED_PARAMETER(yymajor); /* Silence some compiler warnings */ - assert( TOKEN.z[0] ); /* The tokenizer always gives us a token */ - sqlite3ErrorMsg(pParse, "near \"%T\": syntax error", &TOKEN); - pParse->parseError = 1; -} -%stack_overflow { - UNUSED_PARAMETER(yypMinor); /* Silence some compiler warnings */ - sqlite3ErrorMsg(pParse, "parser stack overflow"); - pParse->parseError = 1; -} - -// The name of the generated procedure that implements the parser -// is as follows: -%name sqlite3Parser - -// The following text is included near the beginning of the C source -// code file that implements the parser. -// -%include { -#include "sqliteInt.h" - -/* -** Disable all error recovery processing in the parser push-down -** automaton. -*/ -#define YYNOERRORRECOVERY 1 - -/* -** Make yytestcase() the same as testcase() -*/ -#define yytestcase(X) testcase(X) - -/* -** An instance of this structure holds information about the -** LIMIT clause of a SELECT statement. -*/ -struct LimitVal { - Expr *pLimit; /* The LIMIT expression. NULL if there is no limit */ - Expr *pOffset; /* The OFFSET expression. NULL if there is none */ -}; - -/* -** An instance of this structure is used to store the LIKE, -** GLOB, NOT LIKE, and NOT GLOB operators. -*/ -struct LikeOp { - Token eOperator; /* "like" or "glob" or "regexp" */ - int not; /* True if the NOT keyword is present */ -}; - -/* -** An instance of the following structure describes the event of a -** TRIGGER. "a" is the event type, one of TK_UPDATE, TK_INSERT, -** TK_DELETE, or TK_INSTEAD. If the event is of the form -** -** UPDATE ON (a,b,c) -** -** Then the "b" IdList records the list "a,b,c". -*/ -struct TrigEvent { int a; IdList * b; }; - -/* -** An instance of this structure holds the ATTACH key and the key type. -*/ -struct AttachKey { int type; Token key; }; - -} // end %include - -// Input is a single SQL command -input ::= cmdlist. -cmdlist ::= cmdlist ecmd. -cmdlist ::= ecmd. -ecmd ::= SEMI. -ecmd ::= explain cmdx SEMI. -explain ::= . { sqlite3BeginParse(pParse, 0); } -%ifndef SQLITE_OMIT_EXPLAIN -explain ::= EXPLAIN. { sqlite3BeginParse(pParse, 1); } -explain ::= EXPLAIN QUERY PLAN. { sqlite3BeginParse(pParse, 2); } -%endif SQLITE_OMIT_EXPLAIN -cmdx ::= cmd. { sqlite3FinishCoding(pParse); } - -///////////////////// Begin and end transactions. //////////////////////////// -// - -cmd ::= BEGIN transtype(Y) trans_opt. {sqlite3BeginTransaction(pParse, Y);} -trans_opt ::= . -trans_opt ::= TRANSACTION. -trans_opt ::= TRANSACTION nm. -%type transtype {int} -transtype(A) ::= . {A = TK_DEFERRED;} -transtype(A) ::= DEFERRED(X). {A = @X;} -transtype(A) ::= IMMEDIATE(X). {A = @X;} -transtype(A) ::= EXCLUSIVE(X). {A = @X;} -cmd ::= COMMIT trans_opt. {sqlite3CommitTransaction(pParse);} -cmd ::= END trans_opt. {sqlite3CommitTransaction(pParse);} -cmd ::= ROLLBACK trans_opt. {sqlite3RollbackTransaction(pParse);} - -savepoint_opt ::= SAVEPOINT. -savepoint_opt ::= . -cmd ::= SAVEPOINT nm(X). { - sqlite3Savepoint(pParse, SAVEPOINT_BEGIN, &X); -} -cmd ::= RELEASE savepoint_opt nm(X). { - sqlite3Savepoint(pParse, SAVEPOINT_RELEASE, &X); -} -cmd ::= ROLLBACK trans_opt TO savepoint_opt nm(X). { - sqlite3Savepoint(pParse, SAVEPOINT_ROLLBACK, &X); -} - -///////////////////// The CREATE TABLE statement //////////////////////////// -// -cmd ::= create_table create_table_args. -create_table ::= createkw temp(T) TABLE ifnotexists(E) nm(Y) dbnm(Z). { - sqlite3StartTable(pParse,&Y,&Z,T,0,0,E); -} -createkw(A) ::= CREATE(X). { - pParse->db->lookaside.bEnabled = 0; - A = X; -} -%type ifnotexists {int} -ifnotexists(A) ::= . {A = 0;} -ifnotexists(A) ::= IF NOT EXISTS. {A = 1;} -%type temp {int} -%ifndef SQLITE_OMIT_TEMPDB -temp(A) ::= TEMP. {A = 1;} -%endif SQLITE_OMIT_TEMPDB -temp(A) ::= . {A = 0;} -create_table_args ::= LP columnlist conslist_opt(X) RP(Y). { - sqlite3EndTable(pParse,&X,&Y,0); -} -create_table_args ::= AS select(S). { - sqlite3EndTable(pParse,0,0,S); - sqlite3SelectDelete(pParse->db, S); -} -columnlist ::= columnlist COMMA column. -columnlist ::= column. - -// A "column" is a complete description of a single column in a -// CREATE TABLE statement. This includes the column name, its -// datatype, and other keywords such as PRIMARY KEY, UNIQUE, REFERENCES, -// NOT NULL and so forth. -// -column(A) ::= columnid(X) type carglist. { - A.z = X.z; - A.n = (int)(pParse->sLastToken.z-X.z) + pParse->sLastToken.n; -} -columnid(A) ::= nm(X). { - sqlite3AddColumn(pParse,&X); - A = X; -} - - -// An IDENTIFIER can be a generic identifier, or one of several -// keywords. Any non-standard keyword can also be an identifier. -// -%type id {Token} -id(A) ::= ID(X). {A = X;} -id(A) ::= INDEXED(X). {A = X;} - -// The following directive causes tokens ABORT, AFTER, ASC, etc. to -// fallback to ID if they will not parse as their original value. -// This obviates the need for the "id" nonterminal. -// -%fallback ID - ABORT ACTION AFTER ANALYZE ASC ATTACH BEFORE BEGIN BY CASCADE CAST COLUMNKW - CONFLICT DATABASE DEFERRED DESC DETACH EACH END EXCLUSIVE EXPLAIN FAIL FOR - IGNORE IMMEDIATE INITIALLY INSTEAD LIKE_KW MATCH NO PLAN - QUERY KEY OF OFFSET PRAGMA RAISE RELEASE REPLACE RESTRICT ROW ROLLBACK - SAVEPOINT TEMP TRIGGER VACUUM VIEW VIRTUAL -%ifdef SQLITE_OMIT_COMPOUND_SELECT - EXCEPT INTERSECT UNION -%endif SQLITE_OMIT_COMPOUND_SELECT - REINDEX RENAME CTIME_KW IF - . -%wildcard ANY. - -// Define operator precedence early so that this is the first occurance -// of the operator tokens in the grammer. Keeping the operators together -// causes them to be assigned integer values that are close together, -// which keeps parser tables smaller. -// -// The token values assigned to these symbols is determined by the order -// in which lemon first sees them. It must be the case that ISNULL/NOTNULL, -// NE/EQ, GT/LE, and GE/LT are separated by only a single value. See -// the sqlite3ExprIfFalse() routine for additional information on this -// constraint. -// -%left OR. -%left AND. -%right NOT. -%left IS MATCH LIKE_KW BETWEEN IN ISNULL NOTNULL NE EQ. -%left GT LE LT GE. -%right ESCAPE. -%left BITAND BITOR LSHIFT RSHIFT. -%left PLUS MINUS. -%left STAR SLASH REM. -%left CONCAT. -%left COLLATE. -%right BITNOT. - -// And "ids" is an identifer-or-string. -// -%type ids {Token} -ids(A) ::= ID|STRING(X). {A = X;} - -// The name of a column or table can be any of the following: -// -%type nm {Token} -nm(A) ::= id(X). {A = X;} -nm(A) ::= STRING(X). {A = X;} -nm(A) ::= JOIN_KW(X). {A = X;} - -// A typetoken is really one or more tokens that form a type name such -// as can be found after the column name in a CREATE TABLE statement. -// Multiple tokens are concatenated to form the value of the typetoken. -// -%type typetoken {Token} -type ::= . -type ::= typetoken(X). {sqlite3AddColumnType(pParse,&X);} -typetoken(A) ::= typename(X). {A = X;} -typetoken(A) ::= typename(X) LP signed RP(Y). { - A.z = X.z; - A.n = (int)(&Y.z[Y.n] - X.z); -} -typetoken(A) ::= typename(X) LP signed COMMA signed RP(Y). { - A.z = X.z; - A.n = (int)(&Y.z[Y.n] - X.z); -} -%type typename {Token} -typename(A) ::= ids(X). {A = X;} -typename(A) ::= typename(X) ids(Y). {A.z=X.z; A.n=Y.n+(int)(Y.z-X.z);} -signed ::= plus_num. -signed ::= minus_num. - -// "carglist" is a list of additional constraints that come after the -// column name and column type in a CREATE TABLE statement. -// -carglist ::= carglist carg. -carglist ::= . -carg ::= CONSTRAINT nm ccons. -carg ::= ccons. -ccons ::= DEFAULT term(X). {sqlite3AddDefaultValue(pParse,&X);} -ccons ::= DEFAULT LP expr(X) RP. {sqlite3AddDefaultValue(pParse,&X);} -ccons ::= DEFAULT PLUS term(X). {sqlite3AddDefaultValue(pParse,&X);} -ccons ::= DEFAULT MINUS(A) term(X). { - ExprSpan v; - v.pExpr = sqlite3PExpr(pParse, TK_UMINUS, X.pExpr, 0, 0); - v.zStart = A.z; - v.zEnd = X.zEnd; - sqlite3AddDefaultValue(pParse,&v); -} -ccons ::= DEFAULT id(X). { - ExprSpan v; - spanExpr(&v, pParse, TK_STRING, &X); - sqlite3AddDefaultValue(pParse,&v); -} - -// In addition to the type name, we also care about the primary key and -// UNIQUE constraints. -// -ccons ::= NULL onconf. -ccons ::= NOT NULL onconf(R). {sqlite3AddNotNull(pParse, R);} -ccons ::= PRIMARY KEY sortorder(Z) onconf(R) autoinc(I). - {sqlite3AddPrimaryKey(pParse,0,R,I,Z);} -ccons ::= UNIQUE onconf(R). {sqlite3CreateIndex(pParse,0,0,0,0,R,0,0,0,0);} -ccons ::= CHECK LP expr(X) RP. {sqlite3AddCheckConstraint(pParse,X.pExpr);} -ccons ::= REFERENCES nm(T) idxlist_opt(TA) refargs(R). - {sqlite3CreateForeignKey(pParse,0,&T,TA,R);} -ccons ::= defer_subclause(D). {sqlite3DeferForeignKey(pParse,D);} -ccons ::= COLLATE ids(C). {sqlite3AddCollateType(pParse, &C);} - -// The optional AUTOINCREMENT keyword -%type autoinc {int} -autoinc(X) ::= . {X = 0;} -autoinc(X) ::= AUTOINCR. {X = 1;} - -// The next group of rules parses the arguments to a REFERENCES clause -// that determine if the referential integrity checking is deferred or -// or immediate and which determine what action to take if a ref-integ -// check fails. -// -%type refargs {int} -refargs(A) ::= . { A = OE_None*0x0101; /* EV: R-19803-45884 */} -refargs(A) ::= refargs(X) refarg(Y). { A = (X & ~Y.mask) | Y.value; } -%type refarg {struct {int value; int mask;}} -refarg(A) ::= MATCH nm. { A.value = 0; A.mask = 0x000000; } -refarg(A) ::= ON INSERT refact. { A.value = 0; A.mask = 0x000000; } -refarg(A) ::= ON DELETE refact(X). { A.value = X; A.mask = 0x0000ff; } -refarg(A) ::= ON UPDATE refact(X). { A.value = X<<8; A.mask = 0x00ff00; } -%type refact {int} -refact(A) ::= SET NULL. { A = OE_SetNull; /* EV: R-33326-45252 */} -refact(A) ::= SET DEFAULT. { A = OE_SetDflt; /* EV: R-33326-45252 */} -refact(A) ::= CASCADE. { A = OE_Cascade; /* EV: R-33326-45252 */} -refact(A) ::= RESTRICT. { A = OE_Restrict; /* EV: R-33326-45252 */} -refact(A) ::= NO ACTION. { A = OE_None; /* EV: R-33326-45252 */} -%type defer_subclause {int} -defer_subclause(A) ::= NOT DEFERRABLE init_deferred_pred_opt. {A = 0;} -defer_subclause(A) ::= DEFERRABLE init_deferred_pred_opt(X). {A = X;} -%type init_deferred_pred_opt {int} -init_deferred_pred_opt(A) ::= . {A = 0;} -init_deferred_pred_opt(A) ::= INITIALLY DEFERRED. {A = 1;} -init_deferred_pred_opt(A) ::= INITIALLY IMMEDIATE. {A = 0;} - -// For the time being, the only constraint we care about is the primary -// key and UNIQUE. Both create indices. -// -conslist_opt(A) ::= . {A.n = 0; A.z = 0;} -conslist_opt(A) ::= COMMA(X) conslist. {A = X;} -conslist ::= conslist COMMA tcons. -conslist ::= conslist tcons. -conslist ::= tcons. -tcons ::= CONSTRAINT nm. -tcons ::= PRIMARY KEY LP idxlist(X) autoinc(I) RP onconf(R). - {sqlite3AddPrimaryKey(pParse,X,R,I,0);} -tcons ::= UNIQUE LP idxlist(X) RP onconf(R). - {sqlite3CreateIndex(pParse,0,0,0,X,R,0,0,0,0);} -tcons ::= CHECK LP expr(E) RP onconf. - {sqlite3AddCheckConstraint(pParse,E.pExpr);} -tcons ::= FOREIGN KEY LP idxlist(FA) RP - REFERENCES nm(T) idxlist_opt(TA) refargs(R) defer_subclause_opt(D). { - sqlite3CreateForeignKey(pParse, FA, &T, TA, R); - sqlite3DeferForeignKey(pParse, D); -} -%type defer_subclause_opt {int} -defer_subclause_opt(A) ::= . {A = 0;} -defer_subclause_opt(A) ::= defer_subclause(X). {A = X;} - -// The following is a non-standard extension that allows us to declare the -// default behavior when there is a constraint conflict. -// -%type onconf {int} -%type orconf {u8} -%type resolvetype {int} -onconf(A) ::= . {A = OE_Default;} -onconf(A) ::= ON CONFLICT resolvetype(X). {A = X;} -orconf(A) ::= . {A = OE_Default;} -orconf(A) ::= OR resolvetype(X). {A = (u8)X;} -resolvetype(A) ::= raisetype(X). {A = X;} -resolvetype(A) ::= IGNORE. {A = OE_Ignore;} -resolvetype(A) ::= REPLACE. {A = OE_Replace;} - -////////////////////////// The DROP TABLE ///////////////////////////////////// -// -cmd ::= DROP TABLE ifexists(E) fullname(X). { - sqlite3DropTable(pParse, X, 0, E); -} -%type ifexists {int} -ifexists(A) ::= IF EXISTS. {A = 1;} -ifexists(A) ::= . {A = 0;} - -///////////////////// The CREATE VIEW statement ///////////////////////////// -// -%ifndef SQLITE_OMIT_VIEW -cmd ::= createkw(X) temp(T) VIEW ifnotexists(E) nm(Y) dbnm(Z) AS select(S). { - sqlite3CreateView(pParse, &X, &Y, &Z, S, T, E); -} -cmd ::= DROP VIEW ifexists(E) fullname(X). { - sqlite3DropTable(pParse, X, 1, E); -} -%endif SQLITE_OMIT_VIEW - -//////////////////////// The SELECT statement ///////////////////////////////// -// -cmd ::= select(X). { - SelectDest dest = {SRT_Output, 0, 0, 0, 0}; - sqlite3Select(pParse, X, &dest); - sqlite3SelectDelete(pParse->db, X); -} - -%type select {Select*} -%destructor select {sqlite3SelectDelete(pParse->db, $$);} -%type oneselect {Select*} -%destructor oneselect {sqlite3SelectDelete(pParse->db, $$);} - -select(A) ::= oneselect(X). {A = X;} -%ifndef SQLITE_OMIT_COMPOUND_SELECT -select(A) ::= select(X) multiselect_op(Y) oneselect(Z). { - if( Z ){ - Z->op = (u8)Y; - Z->pPrior = X; - }else{ - sqlite3SelectDelete(pParse->db, X); - } - A = Z; -} -%type multiselect_op {int} -multiselect_op(A) ::= UNION(OP). {A = @OP;} -multiselect_op(A) ::= UNION ALL. {A = TK_ALL;} -multiselect_op(A) ::= EXCEPT|INTERSECT(OP). {A = @OP;} -%endif SQLITE_OMIT_COMPOUND_SELECT -oneselect(A) ::= SELECT distinct(D) selcollist(W) from(X) where_opt(Y) - groupby_opt(P) having_opt(Q) orderby_opt(Z) limit_opt(L). { - A = sqlite3SelectNew(pParse,W,X,Y,P,Q,Z,D,L.pLimit,L.pOffset); -} - -// The "distinct" nonterminal is true (1) if the DISTINCT keyword is -// present and false (0) if it is not. -// -%type distinct {int} -distinct(A) ::= DISTINCT. {A = 1;} -distinct(A) ::= ALL. {A = 0;} -distinct(A) ::= . {A = 0;} - -// selcollist is a list of expressions that are to become the return -// values of the SELECT statement. The "*" in statements like -// "SELECT * FROM ..." is encoded as a special expression with an -// opcode of TK_ALL. -// -%type selcollist {ExprList*} -%destructor selcollist {sqlite3ExprListDelete(pParse->db, $$);} -%type sclp {ExprList*} -%destructor sclp {sqlite3ExprListDelete(pParse->db, $$);} -sclp(A) ::= selcollist(X) COMMA. {A = X;} -sclp(A) ::= . {A = 0;} -selcollist(A) ::= sclp(P) expr(X) as(Y). { - A = sqlite3ExprListAppend(pParse, P, X.pExpr); - if( Y.n>0 ) sqlite3ExprListSetName(pParse, A, &Y, 1); - sqlite3ExprListSetSpan(pParse,A,&X); -} -selcollist(A) ::= sclp(P) STAR. { - Expr *p = sqlite3Expr(pParse->db, TK_ALL, 0); - A = sqlite3ExprListAppend(pParse, P, p); -} -selcollist(A) ::= sclp(P) nm(X) DOT STAR(Y). { - Expr *pRight = sqlite3PExpr(pParse, TK_ALL, 0, 0, &Y); - Expr *pLeft = sqlite3PExpr(pParse, TK_ID, 0, 0, &X); - Expr *pDot = sqlite3PExpr(pParse, TK_DOT, pLeft, pRight, 0); - A = sqlite3ExprListAppend(pParse,P, pDot); -} - -// An option "AS " phrase that can follow one of the expressions that -// define the result set, or one of the tables in the FROM clause. -// -%type as {Token} -as(X) ::= AS nm(Y). {X = Y;} -as(X) ::= ids(Y). {X = Y;} -as(X) ::= . {X.n = 0;} - - -%type seltablist {SrcList*} -%destructor seltablist {sqlite3SrcListDelete(pParse->db, $$);} -%type stl_prefix {SrcList*} -%destructor stl_prefix {sqlite3SrcListDelete(pParse->db, $$);} -%type from {SrcList*} -%destructor from {sqlite3SrcListDelete(pParse->db, $$);} - -// A complete FROM clause. -// -from(A) ::= . {A = sqlite3DbMallocZero(pParse->db, sizeof(*A));} -from(A) ::= FROM seltablist(X). { - A = X; - sqlite3SrcListShiftJoinType(A); -} - -// "seltablist" is a "Select Table List" - the content of the FROM clause -// in a SELECT statement. "stl_prefix" is a prefix of this list. -// -stl_prefix(A) ::= seltablist(X) joinop(Y). { - A = X; - if( ALWAYS(A && A->nSrc>0) ) A->a[A->nSrc-1].jointype = (u8)Y; -} -stl_prefix(A) ::= . {A = 0;} -seltablist(A) ::= stl_prefix(X) nm(Y) dbnm(D) as(Z) indexed_opt(I) on_opt(N) using_opt(U). { - A = sqlite3SrcListAppendFromTerm(pParse,X,&Y,&D,&Z,0,N,U); - sqlite3SrcListIndexedBy(pParse, A, &I); -} -%ifndef SQLITE_OMIT_SUBQUERY - seltablist(A) ::= stl_prefix(X) LP select(S) RP - as(Z) on_opt(N) using_opt(U). { - A = sqlite3SrcListAppendFromTerm(pParse,X,0,0,&Z,S,N,U); - } - seltablist(A) ::= stl_prefix(X) LP seltablist(F) RP - as(Z) on_opt(N) using_opt(U). { - if( X==0 && Z.n==0 && N==0 && U==0 ){ - A = F; - }else{ - Select *pSubquery; - sqlite3SrcListShiftJoinType(F); - pSubquery = sqlite3SelectNew(pParse,0,F,0,0,0,0,0,0,0); - A = sqlite3SrcListAppendFromTerm(pParse,X,0,0,&Z,pSubquery,N,U); - } - } - - // A seltablist_paren nonterminal represents anything in a FROM that - // is contained inside parentheses. This can be either a subquery or - // a grouping of table and subqueries. - // -// %type seltablist_paren {Select*} -// %destructor seltablist_paren {sqlite3SelectDelete(pParse->db, $$);} -// seltablist_paren(A) ::= select(S). {A = S;} -// seltablist_paren(A) ::= seltablist(F). { -// sqlite3SrcListShiftJoinType(F); -// A = sqlite3SelectNew(pParse,0,F,0,0,0,0,0,0,0); -// } -%endif SQLITE_OMIT_SUBQUERY - -%type dbnm {Token} -dbnm(A) ::= . {A.z=0; A.n=0;} -dbnm(A) ::= DOT nm(X). {A = X;} - -%type fullname {SrcList*} -%destructor fullname {sqlite3SrcListDelete(pParse->db, $$);} -fullname(A) ::= nm(X) dbnm(Y). {A = sqlite3SrcListAppend(pParse->db,0,&X,&Y);} - -%type joinop {int} -%type joinop2 {int} -joinop(X) ::= COMMA|JOIN. { X = JT_INNER; } -joinop(X) ::= JOIN_KW(A) JOIN. { X = sqlite3JoinType(pParse,&A,0,0); } -joinop(X) ::= JOIN_KW(A) nm(B) JOIN. { X = sqlite3JoinType(pParse,&A,&B,0); } -joinop(X) ::= JOIN_KW(A) nm(B) nm(C) JOIN. - { X = sqlite3JoinType(pParse,&A,&B,&C); } - -%type on_opt {Expr*} -%destructor on_opt {sqlite3ExprDelete(pParse->db, $$);} -on_opt(N) ::= ON expr(E). {N = E.pExpr;} -on_opt(N) ::= . {N = 0;} - -// Note that this block abuses the Token type just a little. If there is -// no "INDEXED BY" clause, the returned token is empty (z==0 && n==0). If -// there is an INDEXED BY clause, then the token is populated as per normal, -// with z pointing to the token data and n containing the number of bytes -// in the token. -// -// If there is a "NOT INDEXED" clause, then (z==0 && n==1), which is -// normally illegal. The sqlite3SrcListIndexedBy() function -// recognizes and interprets this as a special case. -// -%type indexed_opt {Token} -indexed_opt(A) ::= . {A.z=0; A.n=0;} -indexed_opt(A) ::= INDEXED BY nm(X). {A = X;} -indexed_opt(A) ::= NOT INDEXED. {A.z=0; A.n=1;} - -%type using_opt {IdList*} -%destructor using_opt {sqlite3IdListDelete(pParse->db, $$);} -using_opt(U) ::= USING LP inscollist(L) RP. {U = L;} -using_opt(U) ::= . {U = 0;} - - -%type orderby_opt {ExprList*} -%destructor orderby_opt {sqlite3ExprListDelete(pParse->db, $$);} -%type sortlist {ExprList*} -%destructor sortlist {sqlite3ExprListDelete(pParse->db, $$);} -%type sortitem {Expr*} -%destructor sortitem {sqlite3ExprDelete(pParse->db, $$);} - -orderby_opt(A) ::= . {A = 0;} -orderby_opt(A) ::= ORDER BY sortlist(X). {A = X;} -sortlist(A) ::= sortlist(X) COMMA sortitem(Y) sortorder(Z). { - A = sqlite3ExprListAppend(pParse,X,Y); - if( A ) A->a[A->nExpr-1].sortOrder = (u8)Z; -} -sortlist(A) ::= sortitem(Y) sortorder(Z). { - A = sqlite3ExprListAppend(pParse,0,Y); - if( A && ALWAYS(A->a) ) A->a[0].sortOrder = (u8)Z; -} -sortitem(A) ::= expr(X). {A = X.pExpr;} - -%type sortorder {int} - -sortorder(A) ::= ASC. {A = SQLITE_SO_ASC;} -sortorder(A) ::= DESC. {A = SQLITE_SO_DESC;} -sortorder(A) ::= . {A = SQLITE_SO_ASC;} - -%type groupby_opt {ExprList*} -%destructor groupby_opt {sqlite3ExprListDelete(pParse->db, $$);} -groupby_opt(A) ::= . {A = 0;} -groupby_opt(A) ::= GROUP BY nexprlist(X). {A = X;} - -%type having_opt {Expr*} -%destructor having_opt {sqlite3ExprDelete(pParse->db, $$);} -having_opt(A) ::= . {A = 0;} -having_opt(A) ::= HAVING expr(X). {A = X.pExpr;} - -%type limit_opt {struct LimitVal} - -// The destructor for limit_opt will never fire in the current grammar. -// The limit_opt non-terminal only occurs at the end of a single production -// rule for SELECT statements. As soon as the rule that create the -// limit_opt non-terminal reduces, the SELECT statement rule will also -// reduce. So there is never a limit_opt non-terminal on the stack -// except as a transient. So there is never anything to destroy. -// -//%destructor limit_opt { -// sqlite3ExprDelete(pParse->db, $$.pLimit); -// sqlite3ExprDelete(pParse->db, $$.pOffset); -//} -limit_opt(A) ::= . {A.pLimit = 0; A.pOffset = 0;} -limit_opt(A) ::= LIMIT expr(X). {A.pLimit = X.pExpr; A.pOffset = 0;} -limit_opt(A) ::= LIMIT expr(X) OFFSET expr(Y). - {A.pLimit = X.pExpr; A.pOffset = Y.pExpr;} -limit_opt(A) ::= LIMIT expr(X) COMMA expr(Y). - {A.pOffset = X.pExpr; A.pLimit = Y.pExpr;} - -/////////////////////////// The DELETE statement ///////////////////////////// -// -%ifdef SQLITE_ENABLE_UPDATE_DELETE_LIMIT -cmd ::= DELETE FROM fullname(X) indexed_opt(I) where_opt(W) - orderby_opt(O) limit_opt(L). { - sqlite3SrcListIndexedBy(pParse, X, &I); - W = sqlite3LimitWhere(pParse, X, W, O, L.pLimit, L.pOffset, "DELETE"); - sqlite3DeleteFrom(pParse,X,W); -} -%endif -%ifndef SQLITE_ENABLE_UPDATE_DELETE_LIMIT -cmd ::= DELETE FROM fullname(X) indexed_opt(I) where_opt(W). { - sqlite3SrcListIndexedBy(pParse, X, &I); - sqlite3DeleteFrom(pParse,X,W); -} -%endif - -%type where_opt {Expr*} -%destructor where_opt {sqlite3ExprDelete(pParse->db, $$);} - -where_opt(A) ::= . {A = 0;} -where_opt(A) ::= WHERE expr(X). {A = X.pExpr;} - -////////////////////////// The UPDATE command //////////////////////////////// -// -%ifdef SQLITE_ENABLE_UPDATE_DELETE_LIMIT -cmd ::= UPDATE orconf(R) fullname(X) indexed_opt(I) SET setlist(Y) where_opt(W) orderby_opt(O) limit_opt(L). { - sqlite3SrcListIndexedBy(pParse, X, &I); - sqlite3ExprListCheckLength(pParse,Y,"set list"); - W = sqlite3LimitWhere(pParse, X, W, O, L.pLimit, L.pOffset, "UPDATE"); - sqlite3Update(pParse,X,Y,W,R); -} -%endif -%ifndef SQLITE_ENABLE_UPDATE_DELETE_LIMIT -cmd ::= UPDATE orconf(R) fullname(X) indexed_opt(I) SET setlist(Y) where_opt(W). { - sqlite3SrcListIndexedBy(pParse, X, &I); - sqlite3ExprListCheckLength(pParse,Y,"set list"); - sqlite3Update(pParse,X,Y,W,R); -} -%endif - -%type setlist {ExprList*} -%destructor setlist {sqlite3ExprListDelete(pParse->db, $$);} - -setlist(A) ::= setlist(Z) COMMA nm(X) EQ expr(Y). { - A = sqlite3ExprListAppend(pParse, Z, Y.pExpr); - sqlite3ExprListSetName(pParse, A, &X, 1); -} -setlist(A) ::= nm(X) EQ expr(Y). { - A = sqlite3ExprListAppend(pParse, 0, Y.pExpr); - sqlite3ExprListSetName(pParse, A, &X, 1); -} - -////////////////////////// The INSERT command ///////////////////////////////// -// -cmd ::= insert_cmd(R) INTO fullname(X) inscollist_opt(F) - VALUES LP itemlist(Y) RP. - {sqlite3Insert(pParse, X, Y, 0, F, R);} -cmd ::= insert_cmd(R) INTO fullname(X) inscollist_opt(F) select(S). - {sqlite3Insert(pParse, X, 0, S, F, R);} -cmd ::= insert_cmd(R) INTO fullname(X) inscollist_opt(F) DEFAULT VALUES. - {sqlite3Insert(pParse, X, 0, 0, F, R);} - -%type insert_cmd {u8} -insert_cmd(A) ::= INSERT orconf(R). {A = R;} -insert_cmd(A) ::= REPLACE. {A = OE_Replace;} - - -%type itemlist {ExprList*} -%destructor itemlist {sqlite3ExprListDelete(pParse->db, $$);} - -itemlist(A) ::= itemlist(X) COMMA expr(Y). - {A = sqlite3ExprListAppend(pParse,X,Y.pExpr);} -itemlist(A) ::= expr(X). - {A = sqlite3ExprListAppend(pParse,0,X.pExpr);} - -%type inscollist_opt {IdList*} -%destructor inscollist_opt {sqlite3IdListDelete(pParse->db, $$);} -%type inscollist {IdList*} -%destructor inscollist {sqlite3IdListDelete(pParse->db, $$);} - -inscollist_opt(A) ::= . {A = 0;} -inscollist_opt(A) ::= LP inscollist(X) RP. {A = X;} -inscollist(A) ::= inscollist(X) COMMA nm(Y). - {A = sqlite3IdListAppend(pParse->db,X,&Y);} -inscollist(A) ::= nm(Y). - {A = sqlite3IdListAppend(pParse->db,0,&Y);} - -/////////////////////////// Expression Processing ///////////////////////////// -// - -%type expr {ExprSpan} -%destructor expr {sqlite3ExprDelete(pParse->db, $$.pExpr);} -%type term {ExprSpan} -%destructor term {sqlite3ExprDelete(pParse->db, $$.pExpr);} - -%include { - /* This is a utility routine used to set the ExprSpan.zStart and - ** ExprSpan.zEnd values of pOut so that the span covers the complete - ** range of text beginning with pStart and going to the end of pEnd. - */ - static void spanSet(ExprSpan *pOut, Token *pStart, Token *pEnd){ - pOut->zStart = pStart->z; - pOut->zEnd = &pEnd->z[pEnd->n]; - } - - /* Construct a new Expr object from a single identifier. Use the - ** new Expr to populate pOut. Set the span of pOut to be the identifier - ** that created the expression. - */ - static void spanExpr(ExprSpan *pOut, Parse *pParse, int op, Token *pValue){ - pOut->pExpr = sqlite3PExpr(pParse, op, 0, 0, pValue); - pOut->zStart = pValue->z; - pOut->zEnd = &pValue->z[pValue->n]; - } -} - -expr(A) ::= term(X). {A = X;} -expr(A) ::= LP(B) expr(X) RP(E). {A.pExpr = X.pExpr; spanSet(&A,&B,&E);} -term(A) ::= NULL(X). {spanExpr(&A, pParse, @X, &X);} -expr(A) ::= id(X). {spanExpr(&A, pParse, TK_ID, &X);} -expr(A) ::= JOIN_KW(X). {spanExpr(&A, pParse, TK_ID, &X);} -expr(A) ::= nm(X) DOT nm(Y). { - Expr *temp1 = sqlite3PExpr(pParse, TK_ID, 0, 0, &X); - Expr *temp2 = sqlite3PExpr(pParse, TK_ID, 0, 0, &Y); - A.pExpr = sqlite3PExpr(pParse, TK_DOT, temp1, temp2, 0); - spanSet(&A,&X,&Y); -} -expr(A) ::= nm(X) DOT nm(Y) DOT nm(Z). { - Expr *temp1 = sqlite3PExpr(pParse, TK_ID, 0, 0, &X); - Expr *temp2 = sqlite3PExpr(pParse, TK_ID, 0, 0, &Y); - Expr *temp3 = sqlite3PExpr(pParse, TK_ID, 0, 0, &Z); - Expr *temp4 = sqlite3PExpr(pParse, TK_DOT, temp2, temp3, 0); - A.pExpr = sqlite3PExpr(pParse, TK_DOT, temp1, temp4, 0); - spanSet(&A,&X,&Z); -} -term(A) ::= INTEGER|FLOAT|BLOB(X). {spanExpr(&A, pParse, @X, &X);} -term(A) ::= STRING(X). {spanExpr(&A, pParse, @X, &X);} -expr(A) ::= REGISTER(X). { - /* When doing a nested parse, one can include terms in an expression - ** that look like this: #1 #2 ... These terms refer to registers - ** in the virtual machine. #N is the N-th register. */ - if( pParse->nested==0 ){ - sqlite3ErrorMsg(pParse, "near \"%T\": syntax error", &X); - A.pExpr = 0; - }else{ - A.pExpr = sqlite3PExpr(pParse, TK_REGISTER, 0, 0, &X); - if( A.pExpr ) sqlite3GetInt32(&X.z[1], &A.pExpr->iTable); - } - spanSet(&A, &X, &X); -} -expr(A) ::= VARIABLE(X). { - spanExpr(&A, pParse, TK_VARIABLE, &X); - sqlite3ExprAssignVarNumber(pParse, A.pExpr); - spanSet(&A, &X, &X); -} -expr(A) ::= expr(E) COLLATE ids(C). { - A.pExpr = sqlite3ExprSetCollByToken(pParse, E.pExpr, &C); - A.zStart = E.zStart; - A.zEnd = &C.z[C.n]; -} -%ifndef SQLITE_OMIT_CAST -expr(A) ::= CAST(X) LP expr(E) AS typetoken(T) RP(Y). { - A.pExpr = sqlite3PExpr(pParse, TK_CAST, E.pExpr, 0, &T); - spanSet(&A,&X,&Y); -} -%endif SQLITE_OMIT_CAST -expr(A) ::= ID(X) LP distinct(D) exprlist(Y) RP(E). { - if( Y && Y->nExpr>pParse->db->aLimit[SQLITE_LIMIT_FUNCTION_ARG] ){ - sqlite3ErrorMsg(pParse, "too many arguments on function %T", &X); - } - A.pExpr = sqlite3ExprFunction(pParse, Y, &X); - spanSet(&A,&X,&E); - if( D && A.pExpr ){ - A.pExpr->flags |= EP_Distinct; - } -} -expr(A) ::= ID(X) LP STAR RP(E). { - A.pExpr = sqlite3ExprFunction(pParse, 0, &X); - spanSet(&A,&X,&E); -} -term(A) ::= CTIME_KW(OP). { - /* The CURRENT_TIME, CURRENT_DATE, and CURRENT_TIMESTAMP values are - ** treated as functions that return constants */ - A.pExpr = sqlite3ExprFunction(pParse, 0,&OP); - if( A.pExpr ){ - A.pExpr->op = TK_CONST_FUNC; - } - spanSet(&A, &OP, &OP); -} - -%include { - /* This routine constructs a binary expression node out of two ExprSpan - ** objects and uses the result to populate a new ExprSpan object. - */ - static void spanBinaryExpr( - ExprSpan *pOut, /* Write the result here */ - Parse *pParse, /* The parsing context. Errors accumulate here */ - int op, /* The binary operation */ - ExprSpan *pLeft, /* The left operand */ - ExprSpan *pRight /* The right operand */ - ){ - pOut->pExpr = sqlite3PExpr(pParse, op, pLeft->pExpr, pRight->pExpr, 0); - pOut->zStart = pLeft->zStart; - pOut->zEnd = pRight->zEnd; - } -} - -expr(A) ::= expr(X) AND(OP) expr(Y). {spanBinaryExpr(&A,pParse,@OP,&X,&Y);} -expr(A) ::= expr(X) OR(OP) expr(Y). {spanBinaryExpr(&A,pParse,@OP,&X,&Y);} -expr(A) ::= expr(X) LT|GT|GE|LE(OP) expr(Y). - {spanBinaryExpr(&A,pParse,@OP,&X,&Y);} -expr(A) ::= expr(X) EQ|NE(OP) expr(Y). {spanBinaryExpr(&A,pParse,@OP,&X,&Y);} -expr(A) ::= expr(X) BITAND|BITOR|LSHIFT|RSHIFT(OP) expr(Y). - {spanBinaryExpr(&A,pParse,@OP,&X,&Y);} -expr(A) ::= expr(X) PLUS|MINUS(OP) expr(Y). - {spanBinaryExpr(&A,pParse,@OP,&X,&Y);} -expr(A) ::= expr(X) STAR|SLASH|REM(OP) expr(Y). - {spanBinaryExpr(&A,pParse,@OP,&X,&Y);} -expr(A) ::= expr(X) CONCAT(OP) expr(Y). {spanBinaryExpr(&A,pParse,@OP,&X,&Y);} -%type likeop {struct LikeOp} -likeop(A) ::= LIKE_KW(X). {A.eOperator = X; A.not = 0;} -likeop(A) ::= NOT LIKE_KW(X). {A.eOperator = X; A.not = 1;} -likeop(A) ::= MATCH(X). {A.eOperator = X; A.not = 0;} -likeop(A) ::= NOT MATCH(X). {A.eOperator = X; A.not = 1;} -expr(A) ::= expr(X) likeop(OP) expr(Y). [LIKE_KW] { - ExprList *pList; - pList = sqlite3ExprListAppend(pParse,0, Y.pExpr); - pList = sqlite3ExprListAppend(pParse,pList, X.pExpr); - A.pExpr = sqlite3ExprFunction(pParse, pList, &OP.eOperator); - if( OP.not ) A.pExpr = sqlite3PExpr(pParse, TK_NOT, A.pExpr, 0, 0); - A.zStart = X.zStart; - A.zEnd = Y.zEnd; - if( A.pExpr ) A.pExpr->flags |= EP_InfixFunc; -} -expr(A) ::= expr(X) likeop(OP) expr(Y) ESCAPE expr(E). [LIKE_KW] { - ExprList *pList; - pList = sqlite3ExprListAppend(pParse,0, Y.pExpr); - pList = sqlite3ExprListAppend(pParse,pList, X.pExpr); - pList = sqlite3ExprListAppend(pParse,pList, E.pExpr); - A.pExpr = sqlite3ExprFunction(pParse, pList, &OP.eOperator); - if( OP.not ) A.pExpr = sqlite3PExpr(pParse, TK_NOT, A.pExpr, 0, 0); - A.zStart = X.zStart; - A.zEnd = E.zEnd; - if( A.pExpr ) A.pExpr->flags |= EP_InfixFunc; -} - -%include { - /* Construct an expression node for a unary postfix operator - */ - static void spanUnaryPostfix( - ExprSpan *pOut, /* Write the new expression node here */ - Parse *pParse, /* Parsing context to record errors */ - int op, /* The operator */ - ExprSpan *pOperand, /* The operand */ - Token *pPostOp /* The operand token for setting the span */ - ){ - pOut->pExpr = sqlite3PExpr(pParse, op, pOperand->pExpr, 0, 0); - pOut->zStart = pOperand->zStart; - pOut->zEnd = &pPostOp->z[pPostOp->n]; - } -} - -expr(A) ::= expr(X) ISNULL|NOTNULL(E). {spanUnaryPostfix(&A,pParse,@E,&X,&E);} -expr(A) ::= expr(X) NOT NULL(E). {spanUnaryPostfix(&A,pParse,TK_NOTNULL,&X,&E);} - -%include { - /* A routine to convert a binary TK_IS or TK_ISNOT expression into a - ** unary TK_ISNULL or TK_NOTNULL expression. */ - static void binaryToUnaryIfNull(Parse *pParse, Expr *pY, Expr *pA, int op){ - sqlite3 *db = pParse->db; - if( db->mallocFailed==0 && pY->op==TK_NULL ){ - pA->op = (u8)op; - sqlite3ExprDelete(db, pA->pRight); - pA->pRight = 0; - } - } -} - -// expr1 IS expr2 -// expr1 IS NOT expr2 -// -// If expr2 is NULL then code as TK_ISNULL or TK_NOTNULL. If expr2 -// is any other expression, code as TK_IS or TK_ISNOT. -// -expr(A) ::= expr(X) IS expr(Y). { - spanBinaryExpr(&A,pParse,TK_IS,&X,&Y); - binaryToUnaryIfNull(pParse, Y.pExpr, A.pExpr, TK_ISNULL); -} -expr(A) ::= expr(X) IS NOT expr(Y). { - spanBinaryExpr(&A,pParse,TK_ISNOT,&X,&Y); - binaryToUnaryIfNull(pParse, Y.pExpr, A.pExpr, TK_NOTNULL); -} - -%include { - /* Construct an expression node for a unary prefix operator - */ - static void spanUnaryPrefix( - ExprSpan *pOut, /* Write the new expression node here */ - Parse *pParse, /* Parsing context to record errors */ - int op, /* The operator */ - ExprSpan *pOperand, /* The operand */ - Token *pPreOp /* The operand token for setting the span */ - ){ - pOut->pExpr = sqlite3PExpr(pParse, op, pOperand->pExpr, 0, 0); - pOut->zStart = pPreOp->z; - pOut->zEnd = pOperand->zEnd; - } -} - - - -expr(A) ::= NOT(B) expr(X). {spanUnaryPrefix(&A,pParse,@B,&X,&B);} -expr(A) ::= BITNOT(B) expr(X). {spanUnaryPrefix(&A,pParse,@B,&X,&B);} -expr(A) ::= MINUS(B) expr(X). [BITNOT] - {spanUnaryPrefix(&A,pParse,TK_UMINUS,&X,&B);} -expr(A) ::= PLUS(B) expr(X). [BITNOT] - {spanUnaryPrefix(&A,pParse,TK_UPLUS,&X,&B);} - -%type between_op {int} -between_op(A) ::= BETWEEN. {A = 0;} -between_op(A) ::= NOT BETWEEN. {A = 1;} -expr(A) ::= expr(W) between_op(N) expr(X) AND expr(Y). [BETWEEN] { - ExprList *pList = sqlite3ExprListAppend(pParse,0, X.pExpr); - pList = sqlite3ExprListAppend(pParse,pList, Y.pExpr); - A.pExpr = sqlite3PExpr(pParse, TK_BETWEEN, W.pExpr, 0, 0); - if( A.pExpr ){ - A.pExpr->x.pList = pList; - }else{ - sqlite3ExprListDelete(pParse->db, pList); - } - if( N ) A.pExpr = sqlite3PExpr(pParse, TK_NOT, A.pExpr, 0, 0); - A.zStart = W.zStart; - A.zEnd = Y.zEnd; -} -%ifndef SQLITE_OMIT_SUBQUERY - %type in_op {int} - in_op(A) ::= IN. {A = 0;} - in_op(A) ::= NOT IN. {A = 1;} - expr(A) ::= expr(X) in_op(N) LP exprlist(Y) RP(E). [IN] { - if( Y==0 ){ - /* Expressions of the form - ** - ** expr1 IN () - ** expr1 NOT IN () - ** - ** simplify to constants 0 (false) and 1 (true), respectively, - ** regardless of the value of expr1. - */ - A.pExpr = sqlite3PExpr(pParse, TK_INTEGER, 0, 0, &sqlite3IntTokens[N]); - sqlite3ExprDelete(pParse->db, X.pExpr); - }else{ - A.pExpr = sqlite3PExpr(pParse, TK_IN, X.pExpr, 0, 0); - if( A.pExpr ){ - A.pExpr->x.pList = Y; - sqlite3ExprSetHeight(pParse, A.pExpr); - }else{ - sqlite3ExprListDelete(pParse->db, Y); - } - if( N ) A.pExpr = sqlite3PExpr(pParse, TK_NOT, A.pExpr, 0, 0); - } - A.zStart = X.zStart; - A.zEnd = &E.z[E.n]; - } - expr(A) ::= LP(B) select(X) RP(E). { - A.pExpr = sqlite3PExpr(pParse, TK_SELECT, 0, 0, 0); - if( A.pExpr ){ - A.pExpr->x.pSelect = X; - ExprSetProperty(A.pExpr, EP_xIsSelect); - sqlite3ExprSetHeight(pParse, A.pExpr); - }else{ - sqlite3SelectDelete(pParse->db, X); - } - A.zStart = B.z; - A.zEnd = &E.z[E.n]; - } - expr(A) ::= expr(X) in_op(N) LP select(Y) RP(E). [IN] { - A.pExpr = sqlite3PExpr(pParse, TK_IN, X.pExpr, 0, 0); - if( A.pExpr ){ - A.pExpr->x.pSelect = Y; - ExprSetProperty(A.pExpr, EP_xIsSelect); - sqlite3ExprSetHeight(pParse, A.pExpr); - }else{ - sqlite3SelectDelete(pParse->db, Y); - } - if( N ) A.pExpr = sqlite3PExpr(pParse, TK_NOT, A.pExpr, 0, 0); - A.zStart = X.zStart; - A.zEnd = &E.z[E.n]; - } - expr(A) ::= expr(X) in_op(N) nm(Y) dbnm(Z). [IN] { - SrcList *pSrc = sqlite3SrcListAppend(pParse->db, 0,&Y,&Z); - A.pExpr = sqlite3PExpr(pParse, TK_IN, X.pExpr, 0, 0); - if( A.pExpr ){ - A.pExpr->x.pSelect = sqlite3SelectNew(pParse, 0,pSrc,0,0,0,0,0,0,0); - ExprSetProperty(A.pExpr, EP_xIsSelect); - sqlite3ExprSetHeight(pParse, A.pExpr); - }else{ - sqlite3SrcListDelete(pParse->db, pSrc); - } - if( N ) A.pExpr = sqlite3PExpr(pParse, TK_NOT, A.pExpr, 0, 0); - A.zStart = X.zStart; - A.zEnd = Z.z ? &Z.z[Z.n] : &Y.z[Y.n]; - } - expr(A) ::= EXISTS(B) LP select(Y) RP(E). { - Expr *p = A.pExpr = sqlite3PExpr(pParse, TK_EXISTS, 0, 0, 0); - if( p ){ - p->x.pSelect = Y; - ExprSetProperty(p, EP_xIsSelect); - sqlite3ExprSetHeight(pParse, p); - }else{ - sqlite3SelectDelete(pParse->db, Y); - } - A.zStart = B.z; - A.zEnd = &E.z[E.n]; - } -%endif SQLITE_OMIT_SUBQUERY - -/* CASE expressions */ -expr(A) ::= CASE(C) case_operand(X) case_exprlist(Y) case_else(Z) END(E). { - A.pExpr = sqlite3PExpr(pParse, TK_CASE, X, Z, 0); - if( A.pExpr ){ - A.pExpr->x.pList = Y; - sqlite3ExprSetHeight(pParse, A.pExpr); - }else{ - sqlite3ExprListDelete(pParse->db, Y); - } - A.zStart = C.z; - A.zEnd = &E.z[E.n]; -} -%type case_exprlist {ExprList*} -%destructor case_exprlist {sqlite3ExprListDelete(pParse->db, $$);} -case_exprlist(A) ::= case_exprlist(X) WHEN expr(Y) THEN expr(Z). { - A = sqlite3ExprListAppend(pParse,X, Y.pExpr); - A = sqlite3ExprListAppend(pParse,A, Z.pExpr); -} -case_exprlist(A) ::= WHEN expr(Y) THEN expr(Z). { - A = sqlite3ExprListAppend(pParse,0, Y.pExpr); - A = sqlite3ExprListAppend(pParse,A, Z.pExpr); -} -%type case_else {Expr*} -%destructor case_else {sqlite3ExprDelete(pParse->db, $$);} -case_else(A) ::= ELSE expr(X). {A = X.pExpr;} -case_else(A) ::= . {A = 0;} -%type case_operand {Expr*} -%destructor case_operand {sqlite3ExprDelete(pParse->db, $$);} -case_operand(A) ::= expr(X). {A = X.pExpr;} -case_operand(A) ::= . {A = 0;} - -%type exprlist {ExprList*} -%destructor exprlist {sqlite3ExprListDelete(pParse->db, $$);} -%type nexprlist {ExprList*} -%destructor nexprlist {sqlite3ExprListDelete(pParse->db, $$);} - -exprlist(A) ::= nexprlist(X). {A = X;} -exprlist(A) ::= . {A = 0;} -nexprlist(A) ::= nexprlist(X) COMMA expr(Y). - {A = sqlite3ExprListAppend(pParse,X,Y.pExpr);} -nexprlist(A) ::= expr(Y). - {A = sqlite3ExprListAppend(pParse,0,Y.pExpr);} - - -///////////////////////////// The CREATE INDEX command /////////////////////// -// -cmd ::= createkw(S) uniqueflag(U) INDEX ifnotexists(NE) nm(X) dbnm(D) - ON nm(Y) LP idxlist(Z) RP(E). { - sqlite3CreateIndex(pParse, &X, &D, - sqlite3SrcListAppend(pParse->db,0,&Y,0), Z, U, - &S, &E, SQLITE_SO_ASC, NE); -} - -%type uniqueflag {int} -uniqueflag(A) ::= UNIQUE. {A = OE_Abort;} -uniqueflag(A) ::= . {A = OE_None;} - -%type idxlist {ExprList*} -%destructor idxlist {sqlite3ExprListDelete(pParse->db, $$);} -%type idxlist_opt {ExprList*} -%destructor idxlist_opt {sqlite3ExprListDelete(pParse->db, $$);} - -idxlist_opt(A) ::= . {A = 0;} -idxlist_opt(A) ::= LP idxlist(X) RP. {A = X;} -idxlist(A) ::= idxlist(X) COMMA nm(Y) collate(C) sortorder(Z). { - Expr *p = 0; - if( C.n>0 ){ - p = sqlite3Expr(pParse->db, TK_COLUMN, 0); - sqlite3ExprSetCollByToken(pParse, p, &C); - } - A = sqlite3ExprListAppend(pParse,X, p); - sqlite3ExprListSetName(pParse,A,&Y,1); - sqlite3ExprListCheckLength(pParse, A, "index"); - if( A ) A->a[A->nExpr-1].sortOrder = (u8)Z; -} -idxlist(A) ::= nm(Y) collate(C) sortorder(Z). { - Expr *p = 0; - if( C.n>0 ){ - p = sqlite3PExpr(pParse, TK_COLUMN, 0, 0, 0); - sqlite3ExprSetCollByToken(pParse, p, &C); - } - A = sqlite3ExprListAppend(pParse,0, p); - sqlite3ExprListSetName(pParse, A, &Y, 1); - sqlite3ExprListCheckLength(pParse, A, "index"); - if( A ) A->a[A->nExpr-1].sortOrder = (u8)Z; -} - -%type collate {Token} -collate(C) ::= . {C.z = 0; C.n = 0;} -collate(C) ::= COLLATE ids(X). {C = X;} - - -///////////////////////////// The DROP INDEX command ///////////////////////// -// -cmd ::= DROP INDEX ifexists(E) fullname(X). {sqlite3DropIndex(pParse, X, E);} - -///////////////////////////// The VACUUM command ///////////////////////////// -// -%ifndef SQLITE_OMIT_VACUUM -%ifndef SQLITE_OMIT_ATTACH -cmd ::= VACUUM. {sqlite3Vacuum(pParse);} -cmd ::= VACUUM nm. {sqlite3Vacuum(pParse);} -%endif SQLITE_OMIT_ATTACH -%endif SQLITE_OMIT_VACUUM - -///////////////////////////// The PRAGMA command ///////////////////////////// -// -%ifndef SQLITE_OMIT_PRAGMA -cmd ::= PRAGMA nm(X) dbnm(Z). {sqlite3Pragma(pParse,&X,&Z,0,0);} -cmd ::= PRAGMA nm(X) dbnm(Z) EQ nmnum(Y). {sqlite3Pragma(pParse,&X,&Z,&Y,0);} -cmd ::= PRAGMA nm(X) dbnm(Z) LP nmnum(Y) RP. {sqlite3Pragma(pParse,&X,&Z,&Y,0);} -cmd ::= PRAGMA nm(X) dbnm(Z) EQ minus_num(Y). - {sqlite3Pragma(pParse,&X,&Z,&Y,1);} -cmd ::= PRAGMA nm(X) dbnm(Z) LP minus_num(Y) RP. - {sqlite3Pragma(pParse,&X,&Z,&Y,1);} - -nmnum(A) ::= plus_num(X). {A = X;} -nmnum(A) ::= nm(X). {A = X;} -nmnum(A) ::= ON(X). {A = X;} -nmnum(A) ::= DELETE(X). {A = X;} -nmnum(A) ::= DEFAULT(X). {A = X;} -%endif SQLITE_OMIT_PRAGMA -plus_num(A) ::= plus_opt number(X). {A = X;} -minus_num(A) ::= MINUS number(X). {A = X;} -number(A) ::= INTEGER|FLOAT(X). {A = X;} -plus_opt ::= PLUS. -plus_opt ::= . - -//////////////////////////// The CREATE TRIGGER command ///////////////////// - -%ifndef SQLITE_OMIT_TRIGGER - -cmd ::= createkw trigger_decl(A) BEGIN trigger_cmd_list(S) END(Z). { - Token all; - all.z = A.z; - all.n = (int)(Z.z - A.z) + Z.n; - sqlite3FinishTrigger(pParse, S, &all); -} - -trigger_decl(A) ::= temp(T) TRIGGER ifnotexists(NOERR) nm(B) dbnm(Z) - trigger_time(C) trigger_event(D) - ON fullname(E) foreach_clause when_clause(G). { - sqlite3BeginTrigger(pParse, &B, &Z, C, D.a, D.b, E, G, T, NOERR); - A = (Z.n==0?B:Z); -} - -%type trigger_time {int} -trigger_time(A) ::= BEFORE. { A = TK_BEFORE; } -trigger_time(A) ::= AFTER. { A = TK_AFTER; } -trigger_time(A) ::= INSTEAD OF. { A = TK_INSTEAD;} -trigger_time(A) ::= . { A = TK_BEFORE; } - -%type trigger_event {struct TrigEvent} -%destructor trigger_event {sqlite3IdListDelete(pParse->db, $$.b);} -trigger_event(A) ::= DELETE|INSERT(OP). {A.a = @OP; A.b = 0;} -trigger_event(A) ::= UPDATE(OP). {A.a = @OP; A.b = 0;} -trigger_event(A) ::= UPDATE OF inscollist(X). {A.a = TK_UPDATE; A.b = X;} - -foreach_clause ::= . -foreach_clause ::= FOR EACH ROW. - -%type when_clause {Expr*} -%destructor when_clause {sqlite3ExprDelete(pParse->db, $$);} -when_clause(A) ::= . { A = 0; } -when_clause(A) ::= WHEN expr(X). { A = X.pExpr; } - -%type trigger_cmd_list {TriggerStep*} -%destructor trigger_cmd_list {sqlite3DeleteTriggerStep(pParse->db, $$);} -trigger_cmd_list(A) ::= trigger_cmd_list(Y) trigger_cmd(X) SEMI. { - assert( Y!=0 ); - Y->pLast->pNext = X; - Y->pLast = X; - A = Y; -} -trigger_cmd_list(A) ::= trigger_cmd(X) SEMI. { - assert( X!=0 ); - X->pLast = X; - A = X; -} - -// Disallow qualified table names on INSERT, UPDATE, and DELETE statements -// within a trigger. The table to INSERT, UPDATE, or DELETE is always in -// the same database as the table that the trigger fires on. -// -%type trnm {Token} -trnm(A) ::= nm(X). {A = X;} -trnm(A) ::= nm DOT nm(X). { - A = X; - sqlite3ErrorMsg(pParse, - "qualified table names are not allowed on INSERT, UPDATE, and DELETE " - "statements within triggers"); -} - -// Disallow the INDEX BY and NOT INDEXED clauses on UPDATE and DELETE -// statements within triggers. We make a specific error message for this -// since it is an exception to the default grammar rules. -// -tridxby ::= . -tridxby ::= INDEXED BY nm. { - sqlite3ErrorMsg(pParse, - "the INDEXED BY clause is not allowed on UPDATE or DELETE statements " - "within triggers"); -} -tridxby ::= NOT INDEXED. { - sqlite3ErrorMsg(pParse, - "the NOT INDEXED clause is not allowed on UPDATE or DELETE statements " - "within triggers"); -} - - - -%type trigger_cmd {TriggerStep*} -%destructor trigger_cmd {sqlite3DeleteTriggerStep(pParse->db, $$);} -// UPDATE -trigger_cmd(A) ::= - UPDATE orconf(R) trnm(X) tridxby SET setlist(Y) where_opt(Z). - { A = sqlite3TriggerUpdateStep(pParse->db, &X, Y, Z, R); } - -// INSERT -trigger_cmd(A) ::= - insert_cmd(R) INTO trnm(X) inscollist_opt(F) VALUES LP itemlist(Y) RP. - {A = sqlite3TriggerInsertStep(pParse->db, &X, F, Y, 0, R);} - -trigger_cmd(A) ::= insert_cmd(R) INTO trnm(X) inscollist_opt(F) select(S). - {A = sqlite3TriggerInsertStep(pParse->db, &X, F, 0, S, R);} - -// DELETE -trigger_cmd(A) ::= DELETE FROM trnm(X) tridxby where_opt(Y). - {A = sqlite3TriggerDeleteStep(pParse->db, &X, Y);} - -// SELECT -trigger_cmd(A) ::= select(X). {A = sqlite3TriggerSelectStep(pParse->db, X); } - -// The special RAISE expression that may occur in trigger programs -expr(A) ::= RAISE(X) LP IGNORE RP(Y). { - A.pExpr = sqlite3PExpr(pParse, TK_RAISE, 0, 0, 0); - if( A.pExpr ){ - A.pExpr->affinity = OE_Ignore; - } - A.zStart = X.z; - A.zEnd = &Y.z[Y.n]; -} -expr(A) ::= RAISE(X) LP raisetype(T) COMMA nm(Z) RP(Y). { - A.pExpr = sqlite3PExpr(pParse, TK_RAISE, 0, 0, &Z); - if( A.pExpr ) { - A.pExpr->affinity = (char)T; - } - A.zStart = X.z; - A.zEnd = &Y.z[Y.n]; -} -%endif !SQLITE_OMIT_TRIGGER - -%type raisetype {int} -raisetype(A) ::= ROLLBACK. {A = OE_Rollback;} -raisetype(A) ::= ABORT. {A = OE_Abort;} -raisetype(A) ::= FAIL. {A = OE_Fail;} - - -//////////////////////// DROP TRIGGER statement ////////////////////////////// -%ifndef SQLITE_OMIT_TRIGGER -cmd ::= DROP TRIGGER ifexists(NOERR) fullname(X). { - sqlite3DropTrigger(pParse,X,NOERR); -} -%endif !SQLITE_OMIT_TRIGGER - -//////////////////////// ATTACH DATABASE file AS name ///////////////////////// -%ifndef SQLITE_OMIT_ATTACH -cmd ::= ATTACH database_kw_opt expr(F) AS expr(D) key_opt(K). { - sqlite3Attach(pParse, F.pExpr, D.pExpr, K); -} -cmd ::= DETACH database_kw_opt expr(D). { - sqlite3Detach(pParse, D.pExpr); -} - -%type key_opt {Expr*} -%destructor key_opt {sqlite3ExprDelete(pParse->db, $$);} -key_opt(A) ::= . { A = 0; } -key_opt(A) ::= KEY expr(X). { A = X.pExpr; } - -database_kw_opt ::= DATABASE. -database_kw_opt ::= . -%endif SQLITE_OMIT_ATTACH - -////////////////////////// REINDEX collation ////////////////////////////////// -%ifndef SQLITE_OMIT_REINDEX -cmd ::= REINDEX. {sqlite3Reindex(pParse, 0, 0);} -cmd ::= REINDEX nm(X) dbnm(Y). {sqlite3Reindex(pParse, &X, &Y);} -%endif SQLITE_OMIT_REINDEX - -/////////////////////////////////// ANALYZE /////////////////////////////////// -%ifndef SQLITE_OMIT_ANALYZE -cmd ::= ANALYZE. {sqlite3Analyze(pParse, 0, 0);} -cmd ::= ANALYZE nm(X) dbnm(Y). {sqlite3Analyze(pParse, &X, &Y);} -%endif - -//////////////////////// ALTER TABLE table ... //////////////////////////////// -%ifndef SQLITE_OMIT_ALTERTABLE -cmd ::= ALTER TABLE fullname(X) RENAME TO nm(Z). { - sqlite3AlterRenameTable(pParse,X,&Z); -} -cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt column(Y). { - sqlite3AlterFinishAddColumn(pParse, &Y); -} -add_column_fullname ::= fullname(X). { - pParse->db->lookaside.bEnabled = 0; - sqlite3AlterBeginAddColumn(pParse, X); -} -kwcolumn_opt ::= . -kwcolumn_opt ::= COLUMNKW. -%endif SQLITE_OMIT_ALTERTABLE - -//////////////////////// CREATE VIRTUAL TABLE ... ///////////////////////////// -%ifndef SQLITE_OMIT_VIRTUALTABLE -cmd ::= create_vtab. {sqlite3VtabFinishParse(pParse,0);} -cmd ::= create_vtab LP vtabarglist RP(X). {sqlite3VtabFinishParse(pParse,&X);} -create_vtab ::= createkw VIRTUAL TABLE nm(X) dbnm(Y) USING nm(Z). { - sqlite3VtabBeginParse(pParse, &X, &Y, &Z); -} -vtabarglist ::= vtabarg. -vtabarglist ::= vtabarglist COMMA vtabarg. -vtabarg ::= . {sqlite3VtabArgInit(pParse);} -vtabarg ::= vtabarg vtabargtoken. -vtabargtoken ::= ANY(X). {sqlite3VtabArgExtend(pParse,&X);} -vtabargtoken ::= lp anylist RP(X). {sqlite3VtabArgExtend(pParse,&X);} -lp ::= LP(X). {sqlite3VtabArgExtend(pParse,&X);} -anylist ::= . -anylist ::= anylist LP anylist RP. -anylist ::= anylist ANY. -%endif SQLITE_OMIT_VIRTUALTABLE diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/pcache.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/pcache.c deleted file mode 100644 index 25cc13e47c..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/pcache.c +++ /dev/null @@ -1,594 +0,0 @@ -/* -** 2008 August 05 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file implements that page cache. -*/ -#include "sqliteInt.h" - -/* -** A complete page cache is an instance of this structure. -*/ -struct PCache { - PgHdr *pDirty, *pDirtyTail; /* List of dirty pages in LRU order */ - PgHdr *pSynced; /* Last synced page in dirty page list */ - int nRef; /* Number of referenced pages */ - int nMax; /* Configured cache size */ - int szPage; /* Size of every page in this cache */ - int szExtra; /* Size of extra space for each page */ - int bPurgeable; /* True if pages are on backing store */ - int (*xStress)(void*,PgHdr*); /* Call to try make a page clean */ - void *pStress; /* Argument to xStress */ - sqlite3_pcache *pCache; /* Pluggable cache module */ - PgHdr *pPage1; /* Reference to page 1 */ -}; - -/* -** Some of the assert() macros in this code are too expensive to run -** even during normal debugging. Use them only rarely on long-running -** tests. Enable the expensive asserts using the -** -DSQLITE_ENABLE_EXPENSIVE_ASSERT=1 compile-time option. -*/ -#ifdef SQLITE_ENABLE_EXPENSIVE_ASSERT -# define expensive_assert(X) assert(X) -#else -# define expensive_assert(X) -#endif - -/********************************** Linked List Management ********************/ - -#if !defined(NDEBUG) && defined(SQLITE_ENABLE_EXPENSIVE_ASSERT) -/* -** Check that the pCache->pSynced variable is set correctly. If it -** is not, either fail an assert or return zero. Otherwise, return -** non-zero. This is only used in debugging builds, as follows: -** -** expensive_assert( pcacheCheckSynced(pCache) ); -*/ -static int pcacheCheckSynced(PCache *pCache){ - PgHdr *p; - for(p=pCache->pDirtyTail; p!=pCache->pSynced; p=p->pDirtyPrev){ - assert( p->nRef || (p->flags&PGHDR_NEED_SYNC) ); - } - return (p==0 || p->nRef || (p->flags&PGHDR_NEED_SYNC)==0); -} -#endif /* !NDEBUG && SQLITE_ENABLE_EXPENSIVE_ASSERT */ - -/* -** Remove page pPage from the list of dirty pages. -*/ -static void pcacheRemoveFromDirtyList(PgHdr *pPage){ - PCache *p = pPage->pCache; - - assert( pPage->pDirtyNext || pPage==p->pDirtyTail ); - assert( pPage->pDirtyPrev || pPage==p->pDirty ); - - /* Update the PCache1.pSynced variable if necessary. */ - if( p->pSynced==pPage ){ - PgHdr *pSynced = pPage->pDirtyPrev; - while( pSynced && (pSynced->flags&PGHDR_NEED_SYNC) ){ - pSynced = pSynced->pDirtyPrev; - } - p->pSynced = pSynced; - } - - if( pPage->pDirtyNext ){ - pPage->pDirtyNext->pDirtyPrev = pPage->pDirtyPrev; - }else{ - assert( pPage==p->pDirtyTail ); - p->pDirtyTail = pPage->pDirtyPrev; - } - if( pPage->pDirtyPrev ){ - pPage->pDirtyPrev->pDirtyNext = pPage->pDirtyNext; - }else{ - assert( pPage==p->pDirty ); - p->pDirty = pPage->pDirtyNext; - } - pPage->pDirtyNext = 0; - pPage->pDirtyPrev = 0; - - expensive_assert( pcacheCheckSynced(p) ); -} - -/* -** Add page pPage to the head of the dirty list (PCache1.pDirty is set to -** pPage). -*/ -static void pcacheAddToDirtyList(PgHdr *pPage){ - PCache *p = pPage->pCache; - - assert( pPage->pDirtyNext==0 && pPage->pDirtyPrev==0 && p->pDirty!=pPage ); - - pPage->pDirtyNext = p->pDirty; - if( pPage->pDirtyNext ){ - assert( pPage->pDirtyNext->pDirtyPrev==0 ); - pPage->pDirtyNext->pDirtyPrev = pPage; - } - p->pDirty = pPage; - if( !p->pDirtyTail ){ - p->pDirtyTail = pPage; - } - if( !p->pSynced && 0==(pPage->flags&PGHDR_NEED_SYNC) ){ - p->pSynced = pPage; - } - expensive_assert( pcacheCheckSynced(p) ); -} - -/* -** Wrapper around the pluggable caches xUnpin method. If the cache is -** being used for an in-memory database, this function is a no-op. -*/ -static void pcacheUnpin(PgHdr *p){ - PCache *pCache = p->pCache; - if( pCache->bPurgeable ){ - if( p->pgno==1 ){ - pCache->pPage1 = 0; - } - sqlite3GlobalConfig.pcache.xUnpin(pCache->pCache, p, 0); - } -} - -/*************************************************** General Interfaces ****** -** -** Initialize and shutdown the page cache subsystem. Neither of these -** functions are threadsafe. -*/ -int sqlite3PcacheInitialize(void){ - if( sqlite3GlobalConfig.pcache.xInit==0 ){ - /* IMPLEMENTATION-OF: R-26801-64137 If the xInit() method is NULL, then the - ** built-in default page cache is used instead of the application defined - ** page cache. */ - sqlite3PCacheSetDefault(); - } - return sqlite3GlobalConfig.pcache.xInit(sqlite3GlobalConfig.pcache.pArg); -} -void sqlite3PcacheShutdown(void){ - if( sqlite3GlobalConfig.pcache.xShutdown ){ - /* IMPLEMENTATION-OF: R-26000-56589 The xShutdown() method may be NULL. */ - sqlite3GlobalConfig.pcache.xShutdown(sqlite3GlobalConfig.pcache.pArg); - } -} - -/* -** Return the size in bytes of a PCache object. -*/ -int sqlite3PcacheSize(void){ return sizeof(PCache); } - -/* -** Create a new PCache object. Storage space to hold the object -** has already been allocated and is passed in as the p pointer. -** The caller discovers how much space needs to be allocated by -** calling sqlite3PcacheSize(). -*/ -void sqlite3PcacheOpen( - int szPage, /* Size of every page */ - int szExtra, /* Extra space associated with each page */ - int bPurgeable, /* True if pages are on backing store */ - int (*xStress)(void*,PgHdr*),/* Call to try to make pages clean */ - void *pStress, /* Argument to xStress */ - PCache *p /* Preallocated space for the PCache */ -){ - memset(p, 0, sizeof(PCache)); - p->szPage = szPage; - p->szExtra = szExtra; - p->bPurgeable = bPurgeable; - p->xStress = xStress; - p->pStress = pStress; - p->nMax = 100; -} - -/* -** Change the page size for PCache object. The caller must ensure that there -** are no outstanding page references when this function is called. -*/ -void sqlite3PcacheSetPageSize(PCache *pCache, int szPage){ - assert( pCache->nRef==0 && pCache->pDirty==0 ); - if( pCache->pCache ){ - sqlite3GlobalConfig.pcache.xDestroy(pCache->pCache); - pCache->pCache = 0; - pCache->pPage1 = 0; - } - pCache->szPage = szPage; -} - -/* -** Try to obtain a page from the cache. -*/ -int sqlite3PcacheFetch( - PCache *pCache, /* Obtain the page from this cache */ - Pgno pgno, /* Page number to obtain */ - int createFlag, /* If true, create page if it does not exist already */ - PgHdr **ppPage /* Write the page here */ -){ - PgHdr *pPage = 0; - int eCreate; - - assert( pCache!=0 ); - assert( createFlag==1 || createFlag==0 ); - assert( pgno>0 ); - - /* If the pluggable cache (sqlite3_pcache*) has not been allocated, - ** allocate it now. - */ - if( !pCache->pCache && createFlag ){ - sqlite3_pcache *p; - int nByte; - nByte = pCache->szPage + pCache->szExtra + sizeof(PgHdr); - p = sqlite3GlobalConfig.pcache.xCreate(nByte, pCache->bPurgeable); - if( !p ){ - return SQLITE_NOMEM; - } - sqlite3GlobalConfig.pcache.xCachesize(p, pCache->nMax); - pCache->pCache = p; - } - - eCreate = createFlag * (1 + (!pCache->bPurgeable || !pCache->pDirty)); - if( pCache->pCache ){ - pPage = sqlite3GlobalConfig.pcache.xFetch(pCache->pCache, pgno, eCreate); - } - - if( !pPage && eCreate==1 ){ - PgHdr *pPg; - - /* Find a dirty page to write-out and recycle. First try to find a - ** page that does not require a journal-sync (one with PGHDR_NEED_SYNC - ** cleared), but if that is not possible settle for any other - ** unreferenced dirty page. - */ - expensive_assert( pcacheCheckSynced(pCache) ); - for(pPg=pCache->pSynced; - pPg && (pPg->nRef || (pPg->flags&PGHDR_NEED_SYNC)); - pPg=pPg->pDirtyPrev - ); - pCache->pSynced = pPg; - if( !pPg ){ - for(pPg=pCache->pDirtyTail; pPg && pPg->nRef; pPg=pPg->pDirtyPrev); - } - if( pPg ){ - int rc; -#ifdef SQLITE_LOG_CACHE_SPILL - sqlite3_log(SQLITE_FULL, - "spill page %d making room for %d - cache used: %d/%d", - pPg->pgno, pgno, - sqlite3GlobalConfig.pcache.xPagecount(pCache->pCache), - pCache->nMax); -#endif - rc = pCache->xStress(pCache->pStress, pPg); - if( rc!=SQLITE_OK && rc!=SQLITE_BUSY ){ - return rc; - } - } - - pPage = sqlite3GlobalConfig.pcache.xFetch(pCache->pCache, pgno, 2); - } - - if( pPage ){ - if( !pPage->pData ){ - memset(pPage, 0, sizeof(PgHdr)); - pPage->pData = (void *)&pPage[1]; - pPage->pExtra = (void*)&((char *)pPage->pData)[pCache->szPage]; - memset(pPage->pExtra, 0, pCache->szExtra); - pPage->pCache = pCache; - pPage->pgno = pgno; - } - assert( pPage->pCache==pCache ); - assert( pPage->pgno==pgno ); - assert( pPage->pData==(void *)&pPage[1] ); - assert( pPage->pExtra==(void *)&((char *)&pPage[1])[pCache->szPage] ); - - if( 0==pPage->nRef ){ - pCache->nRef++; - } - pPage->nRef++; - if( pgno==1 ){ - pCache->pPage1 = pPage; - } - } - *ppPage = pPage; - return (pPage==0 && eCreate) ? SQLITE_NOMEM : SQLITE_OK; -} - -/* -** Decrement the reference count on a page. If the page is clean and the -** reference count drops to 0, then it is made elible for recycling. -*/ -void sqlite3PcacheRelease(PgHdr *p){ - assert( p->nRef>0 ); - p->nRef--; - if( p->nRef==0 ){ - PCache *pCache = p->pCache; - pCache->nRef--; - if( (p->flags&PGHDR_DIRTY)==0 ){ - pcacheUnpin(p); - }else{ - /* Move the page to the head of the dirty list. */ - pcacheRemoveFromDirtyList(p); - pcacheAddToDirtyList(p); - } - } -} - -/* -** Increase the reference count of a supplied page by 1. -*/ -void sqlite3PcacheRef(PgHdr *p){ - assert(p->nRef>0); - p->nRef++; -} - -/* -** Drop a page from the cache. There must be exactly one reference to the -** page. This function deletes that reference, so after it returns the -** page pointed to by p is invalid. -*/ -void sqlite3PcacheDrop(PgHdr *p){ - PCache *pCache; - assert( p->nRef==1 ); - if( p->flags&PGHDR_DIRTY ){ - pcacheRemoveFromDirtyList(p); - } - pCache = p->pCache; - pCache->nRef--; - if( p->pgno==1 ){ - pCache->pPage1 = 0; - } - sqlite3GlobalConfig.pcache.xUnpin(pCache->pCache, p, 1); -} - -/* -** Make sure the page is marked as dirty. If it isn't dirty already, -** make it so. -*/ -void sqlite3PcacheMakeDirty(PgHdr *p){ - p->flags &= ~PGHDR_DONT_WRITE; - assert( p->nRef>0 ); - if( 0==(p->flags & PGHDR_DIRTY) ){ - p->flags |= PGHDR_DIRTY; - pcacheAddToDirtyList( p); - } -} - -/* -** Make sure the page is marked as clean. If it isn't clean already, -** make it so. -*/ -void sqlite3PcacheMakeClean(PgHdr *p){ - if( (p->flags & PGHDR_DIRTY) ){ - pcacheRemoveFromDirtyList(p); - p->flags &= ~(PGHDR_DIRTY|PGHDR_NEED_SYNC); - if( p->nRef==0 ){ - pcacheUnpin(p); - } - } -} - -/* -** Make every page in the cache clean. -*/ -void sqlite3PcacheCleanAll(PCache *pCache){ - PgHdr *p; - while( (p = pCache->pDirty)!=0 ){ - sqlite3PcacheMakeClean(p); - } -} - -/* -** Clear the PGHDR_NEED_SYNC flag from all dirty pages. -*/ -void sqlite3PcacheClearSyncFlags(PCache *pCache){ - PgHdr *p; - for(p=pCache->pDirty; p; p=p->pDirtyNext){ - p->flags &= ~PGHDR_NEED_SYNC; - } - pCache->pSynced = pCache->pDirtyTail; -} - -/* -** Change the page number of page p to newPgno. -*/ -void sqlite3PcacheMove(PgHdr *p, Pgno newPgno){ - PCache *pCache = p->pCache; - assert( p->nRef>0 ); - assert( newPgno>0 ); - sqlite3GlobalConfig.pcache.xRekey(pCache->pCache, p, p->pgno, newPgno); - p->pgno = newPgno; - if( (p->flags&PGHDR_DIRTY) && (p->flags&PGHDR_NEED_SYNC) ){ - pcacheRemoveFromDirtyList(p); - pcacheAddToDirtyList(p); - } -} - -/* -** Drop every cache entry whose page number is greater than "pgno". The -** caller must ensure that there are no outstanding references to any pages -** other than page 1 with a page number greater than pgno. -** -** If there is a reference to page 1 and the pgno parameter passed to this -** function is 0, then the data area associated with page 1 is zeroed, but -** the page object is not dropped. -*/ -void sqlite3PcacheTruncate(PCache *pCache, Pgno pgno){ - if( pCache->pCache ){ - PgHdr *p; - PgHdr *pNext; - for(p=pCache->pDirty; p; p=pNext){ - pNext = p->pDirtyNext; - /* This routine never gets call with a positive pgno except right - ** after sqlite3PcacheCleanAll(). So if there are dirty pages, - ** it must be that pgno==0. - */ - assert( p->pgno>0 ); - if( ALWAYS(p->pgno>pgno) ){ - assert( p->flags&PGHDR_DIRTY ); - sqlite3PcacheMakeClean(p); - } - } - if( pgno==0 && pCache->pPage1 ){ - memset(pCache->pPage1->pData, 0, pCache->szPage); - pgno = 1; - } - sqlite3GlobalConfig.pcache.xTruncate(pCache->pCache, pgno+1); - } -} - -/* -** Close a cache. -*/ -void sqlite3PcacheClose(PCache *pCache){ - if( pCache->pCache ){ - sqlite3GlobalConfig.pcache.xDestroy(pCache->pCache); - } -} - -/* -** Discard the contents of the cache. -*/ -void sqlite3PcacheClear(PCache *pCache){ - sqlite3PcacheTruncate(pCache, 0); -} - -/* -** Merge two lists of pages connected by pDirty and in pgno order. -** Do not both fixing the pDirtyPrev pointers. -*/ -static PgHdr *pcacheMergeDirtyList(PgHdr *pA, PgHdr *pB){ - PgHdr result, *pTail; - pTail = &result; - while( pA && pB ){ - if( pA->pgnopgno ){ - pTail->pDirty = pA; - pTail = pA; - pA = pA->pDirty; - }else{ - pTail->pDirty = pB; - pTail = pB; - pB = pB->pDirty; - } - } - if( pA ){ - pTail->pDirty = pA; - }else if( pB ){ - pTail->pDirty = pB; - }else{ - pTail->pDirty = 0; - } - return result.pDirty; -} - -/* -** Sort the list of pages in accending order by pgno. Pages are -** connected by pDirty pointers. The pDirtyPrev pointers are -** corrupted by this sort. -** -** Since there cannot be more than 2^31 distinct pages in a database, -** there cannot be more than 31 buckets required by the merge sorter. -** One extra bucket is added to catch overflow in case something -** ever changes to make the previous sentence incorrect. -*/ -#define N_SORT_BUCKET 32 -static PgHdr *pcacheSortDirtyList(PgHdr *pIn){ - PgHdr *a[N_SORT_BUCKET], *p; - int i; - memset(a, 0, sizeof(a)); - while( pIn ){ - p = pIn; - pIn = p->pDirty; - p->pDirty = 0; - for(i=0; ALWAYS(ipDirty; p; p=p->pDirtyNext){ - p->pDirty = p->pDirtyNext; - } - return pcacheSortDirtyList(pCache->pDirty); -} - -/* -** Return the total number of referenced pages held by the cache. -*/ -int sqlite3PcacheRefCount(PCache *pCache){ - return pCache->nRef; -} - -/* -** Return the number of references to the page supplied as an argument. -*/ -int sqlite3PcachePageRefcount(PgHdr *p){ - return p->nRef; -} - -/* -** Return the total number of pages in the cache. -*/ -int sqlite3PcachePagecount(PCache *pCache){ - int nPage = 0; - if( pCache->pCache ){ - nPage = sqlite3GlobalConfig.pcache.xPagecount(pCache->pCache); - } - return nPage; -} - -#ifdef SQLITE_TEST -/* -** Get the suggested cache-size value. -*/ -int sqlite3PcacheGetCachesize(PCache *pCache){ - return pCache->nMax; -} -#endif - -/* -** Set the suggested cache-size value. -*/ -void sqlite3PcacheSetCachesize(PCache *pCache, int mxPage){ - pCache->nMax = mxPage; - if( pCache->pCache ){ - sqlite3GlobalConfig.pcache.xCachesize(pCache->pCache, mxPage); - } -} - -#if defined(SQLITE_CHECK_PAGES) || defined(SQLITE_DEBUG) -/* -** For all dirty pages currently in the cache, invoke the specified -** callback. This is only used if the SQLITE_CHECK_PAGES macro is -** defined. -*/ -void sqlite3PcacheIterateDirty(PCache *pCache, void (*xIter)(PgHdr *)){ - PgHdr *pDirty; - for(pDirty=pCache->pDirty; pDirty; pDirty=pDirty->pDirtyNext){ - xIter(pDirty); - } -} -#endif diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/pcache.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/pcache.h deleted file mode 100644 index 75da80fb88..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/pcache.h +++ /dev/null @@ -1,155 +0,0 @@ -/* -** 2008 August 05 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This header file defines the interface that the sqlite page cache -** subsystem. -*/ - -#ifndef _PCACHE_H_ - -typedef struct PgHdr PgHdr; -typedef struct PCache PCache; - -/* -** Every page in the cache is controlled by an instance of the following -** structure. -*/ -struct PgHdr { - void *pData; /* Content of this page */ - void *pExtra; /* Extra content */ - PgHdr *pDirty; /* Transient list of dirty pages */ - Pgno pgno; /* Page number for this page */ - Pager *pPager; /* The pager this page is part of */ -#ifdef SQLITE_CHECK_PAGES - u32 pageHash; /* Hash of page content */ -#endif - u16 flags; /* PGHDR flags defined below */ - - /********************************************************************** - ** Elements above are public. All that follows is private to pcache.c - ** and should not be accessed by other modules. - */ - i16 nRef; /* Number of users of this page */ - PCache *pCache; /* Cache that owns this page */ - - PgHdr *pDirtyNext; /* Next element in list of dirty pages */ - PgHdr *pDirtyPrev; /* Previous element in list of dirty pages */ -}; - -/* Bit values for PgHdr.flags */ -#define PGHDR_DIRTY 0x002 /* Page has changed */ -#define PGHDR_NEED_SYNC 0x004 /* Fsync the rollback journal before - ** writing this page to the database */ -#define PGHDR_NEED_READ 0x008 /* Content is unread */ -#define PGHDR_REUSE_UNLIKELY 0x010 /* A hint that reuse is unlikely */ -#define PGHDR_DONT_WRITE 0x020 /* Do not write content to disk */ - -/* Initialize and shutdown the page cache subsystem */ -int sqlite3PcacheInitialize(void); -void sqlite3PcacheShutdown(void); - -/* Page cache buffer management: -** These routines implement SQLITE_CONFIG_PAGECACHE. -*/ -void sqlite3PCacheBufferSetup(void *, int sz, int n); - -/* Create a new pager cache. -** Under memory stress, invoke xStress to try to make pages clean. -** Only clean and unpinned pages can be reclaimed. -*/ -void sqlite3PcacheOpen( - int szPage, /* Size of every page */ - int szExtra, /* Extra space associated with each page */ - int bPurgeable, /* True if pages are on backing store */ - int (*xStress)(void*, PgHdr*), /* Call to try to make pages clean */ - void *pStress, /* Argument to xStress */ - PCache *pToInit /* Preallocated space for the PCache */ -); - -/* Modify the page-size after the cache has been created. */ -void sqlite3PcacheSetPageSize(PCache *, int); - -/* Return the size in bytes of a PCache object. Used to preallocate -** storage space. -*/ -int sqlite3PcacheSize(void); - -/* One release per successful fetch. Page is pinned until released. -** Reference counted. -*/ -int sqlite3PcacheFetch(PCache*, Pgno, int createFlag, PgHdr**); -void sqlite3PcacheRelease(PgHdr*); - -void sqlite3PcacheDrop(PgHdr*); /* Remove page from cache */ -void sqlite3PcacheMakeDirty(PgHdr*); /* Make sure page is marked dirty */ -void sqlite3PcacheMakeClean(PgHdr*); /* Mark a single page as clean */ -void sqlite3PcacheCleanAll(PCache*); /* Mark all dirty list pages as clean */ - -/* Change a page number. Used by incr-vacuum. */ -void sqlite3PcacheMove(PgHdr*, Pgno); - -/* Remove all pages with pgno>x. Reset the cache if x==0 */ -void sqlite3PcacheTruncate(PCache*, Pgno x); - -/* Get a list of all dirty pages in the cache, sorted by page number */ -PgHdr *sqlite3PcacheDirtyList(PCache*); - -/* Reset and close the cache object */ -void sqlite3PcacheClose(PCache*); - -/* Clear flags from pages of the page cache */ -void sqlite3PcacheClearSyncFlags(PCache *); - -/* Discard the contents of the cache */ -void sqlite3PcacheClear(PCache*); - -/* Return the total number of outstanding page references */ -int sqlite3PcacheRefCount(PCache*); - -/* Increment the reference count of an existing page */ -void sqlite3PcacheRef(PgHdr*); - -int sqlite3PcachePageRefcount(PgHdr*); - -/* Return the total number of pages stored in the cache */ -int sqlite3PcachePagecount(PCache*); - -#if defined(SQLITE_CHECK_PAGES) || defined(SQLITE_DEBUG) -/* Iterate through all dirty pages currently stored in the cache. This -** interface is only available if SQLITE_CHECK_PAGES is defined when the -** library is built. -*/ -void sqlite3PcacheIterateDirty(PCache *pCache, void (*xIter)(PgHdr *)); -#endif - -/* Set and get the suggested cache-size for the specified pager-cache. -** -** If no global maximum is configured, then the system attempts to limit -** the total number of pages cached by purgeable pager-caches to the sum -** of the suggested cache-sizes. -*/ -void sqlite3PcacheSetCachesize(PCache *, int); -#ifdef SQLITE_TEST -int sqlite3PcacheGetCachesize(PCache *); -#endif - -#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT -/* Try to return memory used by the pcache module to the main memory heap */ -int sqlite3PcacheReleaseMemory(int); -#endif - -#ifdef SQLITE_TEST -void sqlite3PcacheStats(int*,int*,int*,int*); -#endif - -void sqlite3PCacheSetDefault(void); - -#endif /* _PCACHE_H_ */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/pcache1.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/pcache1.c deleted file mode 100644 index b2c44c349c..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/pcache1.c +++ /dev/null @@ -1,972 +0,0 @@ -/* -** 2008 November 05 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** -** This file implements the default page cache implementation (the -** sqlite3_pcache interface). It also contains part of the implementation -** of the SQLITE_CONFIG_PAGECACHE and sqlite3_release_memory() features. -** If the default page cache implementation is overriden, then neither of -** these two features are available. -*/ - -#include "sqliteInt.h" - -typedef struct PCache1 PCache1; -typedef struct PgHdr1 PgHdr1; -typedef struct PgFreeslot PgFreeslot; -typedef struct PGroup PGroup; - - -/* Each page cache (or PCache) belongs to a PGroup. A PGroup is a set -** of one or more PCaches that are able to recycle each others unpinned -** pages when they are under memory pressure. A PGroup is an instance of -** the following object. -** -** This page cache implementation works in one of two modes: -** -** (1) Every PCache is the sole member of its own PGroup. There is -** one PGroup per PCache. -** -** (2) There is a single global PGroup that all PCaches are a member -** of. -** -** Mode 1 uses more memory (since PCache instances are not able to rob -** unused pages from other PCaches) but it also operates without a mutex, -** and is therefore often faster. Mode 2 requires a mutex in order to be -** threadsafe, but is able recycle pages more efficient. -** -** For mode (1), PGroup.mutex is NULL. For mode (2) there is only a single -** PGroup which is the pcache1.grp global variable and its mutex is -** SQLITE_MUTEX_STATIC_LRU. -*/ -struct PGroup { - sqlite3_mutex *mutex; /* MUTEX_STATIC_LRU or NULL */ - int nMaxPage; /* Sum of nMax for purgeable caches */ - int nMinPage; /* Sum of nMin for purgeable caches */ - int mxPinned; /* nMaxpage + 10 - nMinPage */ - int nCurrentPage; /* Number of purgeable pages allocated */ - PgHdr1 *pLruHead, *pLruTail; /* LRU list of unpinned pages */ -}; - -/* Each page cache is an instance of the following object. Every -** open database file (including each in-memory database and each -** temporary or transient database) has a single page cache which -** is an instance of this object. -** -** Pointers to structures of this type are cast and returned as -** opaque sqlite3_pcache* handles. -*/ -struct PCache1 { - /* Cache configuration parameters. Page size (szPage) and the purgeable - ** flag (bPurgeable) are set when the cache is created. nMax may be - ** modified at any time by a call to the pcache1CacheSize() method. - ** The PGroup mutex must be held when accessing nMax. - */ - PGroup *pGroup; /* PGroup this cache belongs to */ - int szPage; /* Size of allocated pages in bytes */ - int bPurgeable; /* True if cache is purgeable */ - unsigned int nMin; /* Minimum number of pages reserved */ - unsigned int nMax; /* Configured "cache_size" value */ - unsigned int n90pct; /* nMax*9/10 */ - - /* Hash table of all pages. The following variables may only be accessed - ** when the accessor is holding the PGroup mutex. - */ - unsigned int nRecyclable; /* Number of pages in the LRU list */ - unsigned int nPage; /* Total number of pages in apHash */ - unsigned int nHash; /* Number of slots in apHash[] */ - PgHdr1 **apHash; /* Hash table for fast lookup by key */ - - unsigned int iMaxKey; /* Largest key seen since xTruncate() */ -}; - -/* -** Each cache entry is represented by an instance of the following -** structure. A buffer of PgHdr1.pCache->szPage bytes is allocated -** directly before this structure in memory (see the PGHDR1_TO_PAGE() -** macro below). -*/ -struct PgHdr1 { - unsigned int iKey; /* Key value (page number) */ - PgHdr1 *pNext; /* Next in hash table chain */ - PCache1 *pCache; /* Cache that currently owns this page */ - PgHdr1 *pLruNext; /* Next in LRU list of unpinned pages */ - PgHdr1 *pLruPrev; /* Previous in LRU list of unpinned pages */ -}; - -/* -** Free slots in the allocator used to divide up the buffer provided using -** the SQLITE_CONFIG_PAGECACHE mechanism. -*/ -struct PgFreeslot { - PgFreeslot *pNext; /* Next free slot */ -}; - -/* -** Global data used by this cache. -*/ -static SQLITE_WSD struct PCacheGlobal { - PGroup grp; /* The global PGroup for mode (2) */ - - /* Variables related to SQLITE_CONFIG_PAGECACHE settings. The - ** szSlot, nSlot, pStart, pEnd, nReserve, and isInit values are all - ** fixed at sqlite3_initialize() time and do not require mutex protection. - ** The nFreeSlot and pFree values do require mutex protection. - */ - int isInit; /* True if initialized */ - int szSlot; /* Size of each free slot */ - int nSlot; /* The number of pcache slots */ - int nReserve; /* Try to keep nFreeSlot above this */ - void *pStart, *pEnd; /* Bounds of pagecache malloc range */ - /* Above requires no mutex. Use mutex below for variable that follow. */ - sqlite3_mutex *mutex; /* Mutex for accessing the following: */ - int nFreeSlot; /* Number of unused pcache slots */ - PgFreeslot *pFree; /* Free page blocks */ - /* The following value requires a mutex to change. We skip the mutex on - ** reading because (1) most platforms read a 32-bit integer atomically and - ** (2) even if an incorrect value is read, no great harm is done since this - ** is really just an optimization. */ - int bUnderPressure; /* True if low on PAGECACHE memory */ -} pcache1_g; - -/* -** All code in this file should access the global structure above via the -** alias "pcache1". This ensures that the WSD emulation is used when -** compiling for systems that do not support real WSD. -*/ -#define pcache1 (GLOBAL(struct PCacheGlobal, pcache1_g)) - -/* -** When a PgHdr1 structure is allocated, the associated PCache1.szPage -** bytes of data are located directly before it in memory (i.e. the total -** size of the allocation is sizeof(PgHdr1)+PCache1.szPage byte). The -** PGHDR1_TO_PAGE() macro takes a pointer to a PgHdr1 structure as -** an argument and returns a pointer to the associated block of szPage -** bytes. The PAGE_TO_PGHDR1() macro does the opposite: its argument is -** a pointer to a block of szPage bytes of data and the return value is -** a pointer to the associated PgHdr1 structure. -** -** assert( PGHDR1_TO_PAGE(PAGE_TO_PGHDR1(pCache, X))==X ); -*/ -#define PGHDR1_TO_PAGE(p) (void*)(((char*)p) - p->pCache->szPage) -#define PAGE_TO_PGHDR1(c, p) (PgHdr1*)(((char*)p) + c->szPage) - -/* -** Macros to enter and leave the PCache LRU mutex. -*/ -#define pcache1EnterMutex(X) sqlite3_mutex_enter((X)->mutex) -#define pcache1LeaveMutex(X) sqlite3_mutex_leave((X)->mutex) - -/******************************************************************************/ -/******** Page Allocation/SQLITE_CONFIG_PCACHE Related Functions **************/ - -/* -** This function is called during initialization if a static buffer is -** supplied to use for the page-cache by passing the SQLITE_CONFIG_PAGECACHE -** verb to sqlite3_config(). Parameter pBuf points to an allocation large -** enough to contain 'n' buffers of 'sz' bytes each. -** -** This routine is called from sqlite3_initialize() and so it is guaranteed -** to be serialized already. There is no need for further mutexing. -*/ -void sqlite3PCacheBufferSetup(void *pBuf, int sz, int n){ - if( pcache1.isInit ){ - PgFreeslot *p; - sz = ROUNDDOWN8(sz); - pcache1.szSlot = sz; - pcache1.nSlot = pcache1.nFreeSlot = n; - pcache1.nReserve = n>90 ? 10 : (n/10 + 1); - pcache1.pStart = pBuf; - pcache1.pFree = 0; - pcache1.bUnderPressure = 0; - while( n-- ){ - p = (PgFreeslot*)pBuf; - p->pNext = pcache1.pFree; - pcache1.pFree = p; - pBuf = (void*)&((char*)pBuf)[sz]; - } - pcache1.pEnd = pBuf; - } -} - -/* -** Malloc function used within this file to allocate space from the buffer -** configured using sqlite3_config(SQLITE_CONFIG_PAGECACHE) option. If no -** such buffer exists or there is no space left in it, this function falls -** back to sqlite3Malloc(). -** -** Multiple threads can run this routine at the same time. Global variables -** in pcache1 need to be protected via mutex. -*/ -static void *pcache1Alloc(int nByte){ - void *p = 0; - assert( sqlite3_mutex_notheld(pcache1.grp.mutex) ); - sqlite3StatusSet(SQLITE_STATUS_PAGECACHE_SIZE, nByte); - if( nByte<=pcache1.szSlot ){ - sqlite3_mutex_enter(pcache1.mutex); - p = (PgHdr1 *)pcache1.pFree; - if( p ){ - pcache1.pFree = pcache1.pFree->pNext; - pcache1.nFreeSlot--; - pcache1.bUnderPressure = pcache1.nFreeSlot=0 ); - sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_USED, 1); - } - sqlite3_mutex_leave(pcache1.mutex); - } - if( p==0 ){ - /* Memory is not available in the SQLITE_CONFIG_PAGECACHE pool. Get - ** it from sqlite3Malloc instead. - */ - p = sqlite3Malloc(nByte); - if( p ){ - int sz = sqlite3MallocSize(p); - sqlite3_mutex_enter(pcache1.mutex); - sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_OVERFLOW, sz); - sqlite3_mutex_leave(pcache1.mutex); - } - sqlite3MemdebugSetType(p, MEMTYPE_PCACHE); - } - return p; -} - -/* -** Free an allocated buffer obtained from pcache1Alloc(). -*/ -static void pcache1Free(void *p){ - if( p==0 ) return; - if( p>=pcache1.pStart && ppNext = pcache1.pFree; - pcache1.pFree = pSlot; - pcache1.nFreeSlot++; - pcache1.bUnderPressure = pcache1.nFreeSlot=pcache1.pStart && pszPage; - PgHdr1 *p = 0; - void *pPg; - - /* The group mutex must be released before pcache1Alloc() is called. This - ** is because it may call sqlite3_release_memory(), which assumes that - ** this mutex is not held. */ - assert( sqlite3_mutex_held(pCache->pGroup->mutex) ); - pcache1LeaveMutex(pCache->pGroup); - pPg = pcache1Alloc(nByte); - pcache1EnterMutex(pCache->pGroup); - - if( pPg ){ - p = PAGE_TO_PGHDR1(pCache, pPg); - if( pCache->bPurgeable ){ - pCache->pGroup->nCurrentPage++; - } - } - return p; -} - -/* -** Free a page object allocated by pcache1AllocPage(). -** -** The pointer is allowed to be NULL, which is prudent. But it turns out -** that the current implementation happens to never call this routine -** with a NULL pointer, so we mark the NULL test with ALWAYS(). -*/ -static void pcache1FreePage(PgHdr1 *p){ - if( ALWAYS(p) ){ - PCache1 *pCache = p->pCache; - assert( sqlite3_mutex_held(p->pCache->pGroup->mutex) ); - pcache1Free(PGHDR1_TO_PAGE(p)); - if( pCache->bPurgeable ){ - pCache->pGroup->nCurrentPage--; - } - } -} - -/* -** Malloc function used by SQLite to obtain space from the buffer configured -** using sqlite3_config(SQLITE_CONFIG_PAGECACHE) option. If no such buffer -** exists, this function falls back to sqlite3Malloc(). -*/ -void *sqlite3PageMalloc(int sz){ - return pcache1Alloc(sz); -} - -/* -** Free an allocated buffer obtained from sqlite3PageMalloc(). -*/ -void sqlite3PageFree(void *p){ - pcache1Free(p); -} - - -/* -** Return true if it desirable to avoid allocating a new page cache -** entry. -** -** If memory was allocated specifically to the page cache using -** SQLITE_CONFIG_PAGECACHE but that memory has all been used, then -** it is desirable to avoid allocating a new page cache entry because -** presumably SQLITE_CONFIG_PAGECACHE was suppose to be sufficient -** for all page cache needs and we should not need to spill the -** allocation onto the heap. -** -** Or, the heap is used for all page cache memory put the heap is -** under memory pressure, then again it is desirable to avoid -** allocating a new page cache entry in order to avoid stressing -** the heap even further. -*/ -static int pcache1UnderMemoryPressure(PCache1 *pCache){ - if( pcache1.nSlot && pCache->szPage<=pcache1.szSlot ){ - return pcache1.bUnderPressure; - }else{ - return sqlite3HeapNearlyFull(); - } -} - -/******************************************************************************/ -/******** General Implementation Functions ************************************/ - -/* -** This function is used to resize the hash table used by the cache passed -** as the first argument. -** -** The PCache mutex must be held when this function is called. -*/ -static int pcache1ResizeHash(PCache1 *p){ - PgHdr1 **apNew; - unsigned int nNew; - unsigned int i; - - assert( sqlite3_mutex_held(p->pGroup->mutex) ); - - nNew = p->nHash*2; - if( nNew<256 ){ - nNew = 256; - } - - pcache1LeaveMutex(p->pGroup); - if( p->nHash ){ sqlite3BeginBenignMalloc(); } - apNew = (PgHdr1 **)sqlite3_malloc(sizeof(PgHdr1 *)*nNew); - if( p->nHash ){ sqlite3EndBenignMalloc(); } - pcache1EnterMutex(p->pGroup); - if( apNew ){ - memset(apNew, 0, sizeof(PgHdr1 *)*nNew); - for(i=0; inHash; i++){ - PgHdr1 *pPage; - PgHdr1 *pNext = p->apHash[i]; - while( (pPage = pNext)!=0 ){ - unsigned int h = pPage->iKey % nNew; - pNext = pPage->pNext; - pPage->pNext = apNew[h]; - apNew[h] = pPage; - } - } - sqlite3_free(p->apHash); - p->apHash = apNew; - p->nHash = nNew; - } - - return (p->apHash ? SQLITE_OK : SQLITE_NOMEM); -} - -/* -** This function is used internally to remove the page pPage from the -** PGroup LRU list, if is part of it. If pPage is not part of the PGroup -** LRU list, then this function is a no-op. -** -** The PGroup mutex must be held when this function is called. -** -** If pPage is NULL then this routine is a no-op. -*/ -static void pcache1PinPage(PgHdr1 *pPage){ - PCache1 *pCache; - PGroup *pGroup; - - if( pPage==0 ) return; - pCache = pPage->pCache; - pGroup = pCache->pGroup; - assert( sqlite3_mutex_held(pGroup->mutex) ); - if( pPage->pLruNext || pPage==pGroup->pLruTail ){ - if( pPage->pLruPrev ){ - pPage->pLruPrev->pLruNext = pPage->pLruNext; - } - if( pPage->pLruNext ){ - pPage->pLruNext->pLruPrev = pPage->pLruPrev; - } - if( pGroup->pLruHead==pPage ){ - pGroup->pLruHead = pPage->pLruNext; - } - if( pGroup->pLruTail==pPage ){ - pGroup->pLruTail = pPage->pLruPrev; - } - pPage->pLruNext = 0; - pPage->pLruPrev = 0; - pPage->pCache->nRecyclable--; - } -} - - -/* -** Remove the page supplied as an argument from the hash table -** (PCache1.apHash structure) that it is currently stored in. -** -** The PGroup mutex must be held when this function is called. -*/ -static void pcache1RemoveFromHash(PgHdr1 *pPage){ - unsigned int h; - PCache1 *pCache = pPage->pCache; - PgHdr1 **pp; - - assert( sqlite3_mutex_held(pCache->pGroup->mutex) ); - h = pPage->iKey % pCache->nHash; - for(pp=&pCache->apHash[h]; (*pp)!=pPage; pp=&(*pp)->pNext); - *pp = (*pp)->pNext; - - pCache->nPage--; -} - -/* -** If there are currently more than nMaxPage pages allocated, try -** to recycle pages to reduce the number allocated to nMaxPage. -*/ -static void pcache1EnforceMaxPage(PGroup *pGroup){ - assert( sqlite3_mutex_held(pGroup->mutex) ); - while( pGroup->nCurrentPage>pGroup->nMaxPage && pGroup->pLruTail ){ - PgHdr1 *p = pGroup->pLruTail; - assert( p->pCache->pGroup==pGroup ); - pcache1PinPage(p); - pcache1RemoveFromHash(p); - pcache1FreePage(p); - } -} - -/* -** Discard all pages from cache pCache with a page number (key value) -** greater than or equal to iLimit. Any pinned pages that meet this -** criteria are unpinned before they are discarded. -** -** The PCache mutex must be held when this function is called. -*/ -static void pcache1TruncateUnsafe( - PCache1 *pCache, /* The cache to truncate */ - unsigned int iLimit /* Drop pages with this pgno or larger */ -){ - TESTONLY( unsigned int nPage = 0; ) /* To assert pCache->nPage is correct */ - unsigned int h; - assert( sqlite3_mutex_held(pCache->pGroup->mutex) ); - for(h=0; hnHash; h++){ - PgHdr1 **pp = &pCache->apHash[h]; - PgHdr1 *pPage; - while( (pPage = *pp)!=0 ){ - if( pPage->iKey>=iLimit ){ - pCache->nPage--; - *pp = pPage->pNext; - pcache1PinPage(pPage); - pcache1FreePage(pPage); - }else{ - pp = &pPage->pNext; - TESTONLY( nPage++; ) - } - } - } - assert( pCache->nPage==nPage ); -} - -/******************************************************************************/ -/******** sqlite3_pcache Methods **********************************************/ - -/* -** Implementation of the sqlite3_pcache.xInit method. -*/ -static int pcache1Init(void *NotUsed){ - UNUSED_PARAMETER(NotUsed); - assert( pcache1.isInit==0 ); - memset(&pcache1, 0, sizeof(pcache1)); - if( sqlite3GlobalConfig.bCoreMutex ){ - pcache1.grp.mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_LRU); - pcache1.mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_PMEM); - } - pcache1.grp.mxPinned = 10; - pcache1.isInit = 1; - return SQLITE_OK; -} - -/* -** Implementation of the sqlite3_pcache.xShutdown method. -** Note that the static mutex allocated in xInit does -** not need to be freed. -*/ -static void pcache1Shutdown(void *NotUsed){ - UNUSED_PARAMETER(NotUsed); - assert( pcache1.isInit!=0 ); - memset(&pcache1, 0, sizeof(pcache1)); -} - -/* -** Implementation of the sqlite3_pcache.xCreate method. -** -** Allocate a new cache. -*/ -static sqlite3_pcache *pcache1Create(int szPage, int bPurgeable){ - PCache1 *pCache; /* The newly created page cache */ - PGroup *pGroup; /* The group the new page cache will belong to */ - int sz; /* Bytes of memory required to allocate the new cache */ - - /* - ** The seperateCache variable is true if each PCache has its own private - ** PGroup. In other words, separateCache is true for mode (1) where no - ** mutexing is required. - ** - ** * Always use a unified cache (mode-2) if ENABLE_MEMORY_MANAGEMENT - ** - ** * Always use a unified cache in single-threaded applications - ** - ** * Otherwise (if multi-threaded and ENABLE_MEMORY_MANAGEMENT is off) - ** use separate caches (mode-1) - */ -#if defined(SQLITE_ENABLE_MEMORY_MANAGEMENT) || SQLITE_THREADSAFE==0 - const int separateCache = 0; -#else - int separateCache = sqlite3GlobalConfig.bCoreMutex>0; -#endif - - sz = sizeof(PCache1) + sizeof(PGroup)*separateCache; - pCache = (PCache1 *)sqlite3_malloc(sz); - if( pCache ){ - memset(pCache, 0, sz); - if( separateCache ){ - pGroup = (PGroup*)&pCache[1]; - pGroup->mxPinned = 10; - }else{ - pGroup = &pcache1.grp; - } - pCache->pGroup = pGroup; - pCache->szPage = szPage; - pCache->bPurgeable = (bPurgeable ? 1 : 0); - if( bPurgeable ){ - pCache->nMin = 10; - pcache1EnterMutex(pGroup); - pGroup->nMinPage += pCache->nMin; - pGroup->mxPinned = pGroup->nMaxPage + 10 - pGroup->nMinPage; - pcache1LeaveMutex(pGroup); - } - } - return (sqlite3_pcache *)pCache; -} - -/* -** Implementation of the sqlite3_pcache.xCachesize method. -** -** Configure the cache_size limit for a cache. -*/ -static void pcache1Cachesize(sqlite3_pcache *p, int nMax){ - PCache1 *pCache = (PCache1 *)p; - if( pCache->bPurgeable ){ - PGroup *pGroup = pCache->pGroup; - pcache1EnterMutex(pGroup); - pGroup->nMaxPage += (nMax - pCache->nMax); - pGroup->mxPinned = pGroup->nMaxPage + 10 - pGroup->nMinPage; - pCache->nMax = nMax; - pCache->n90pct = pCache->nMax*9/10; - pcache1EnforceMaxPage(pGroup); - pcache1LeaveMutex(pGroup); - } -} - -/* -** Implementation of the sqlite3_pcache.xPagecount method. -*/ -static int pcache1Pagecount(sqlite3_pcache *p){ - int n; - PCache1 *pCache = (PCache1*)p; - pcache1EnterMutex(pCache->pGroup); - n = pCache->nPage; - pcache1LeaveMutex(pCache->pGroup); - return n; -} - -/* -** Implementation of the sqlite3_pcache.xFetch method. -** -** Fetch a page by key value. -** -** Whether or not a new page may be allocated by this function depends on -** the value of the createFlag argument. 0 means do not allocate a new -** page. 1 means allocate a new page if space is easily available. 2 -** means to try really hard to allocate a new page. -** -** For a non-purgeable cache (a cache used as the storage for an in-memory -** database) there is really no difference between createFlag 1 and 2. So -** the calling function (pcache.c) will never have a createFlag of 1 on -** a non-purgable cache. -** -** There are three different approaches to obtaining space for a page, -** depending on the value of parameter createFlag (which may be 0, 1 or 2). -** -** 1. Regardless of the value of createFlag, the cache is searched for a -** copy of the requested page. If one is found, it is returned. -** -** 2. If createFlag==0 and the page is not already in the cache, NULL is -** returned. -** -** 3. If createFlag is 1, and the page is not already in the cache, then -** return NULL (do not allocate a new page) if any of the following -** conditions are true: -** -** (a) the number of pages pinned by the cache is greater than -** PCache1.nMax, or -** -** (b) the number of pages pinned by the cache is greater than -** the sum of nMax for all purgeable caches, less the sum of -** nMin for all other purgeable caches, or -** -** 4. If none of the first three conditions apply and the cache is marked -** as purgeable, and if one of the following is true: -** -** (a) The number of pages allocated for the cache is already -** PCache1.nMax, or -** -** (b) The number of pages allocated for all purgeable caches is -** already equal to or greater than the sum of nMax for all -** purgeable caches, -** -** (c) The system is under memory pressure and wants to avoid -** unnecessary pages cache entry allocations -** -** then attempt to recycle a page from the LRU list. If it is the right -** size, return the recycled buffer. Otherwise, free the buffer and -** proceed to step 5. -** -** 5. Otherwise, allocate and return a new page buffer. -*/ -static void *pcache1Fetch(sqlite3_pcache *p, unsigned int iKey, int createFlag){ - int nPinned; - PCache1 *pCache = (PCache1 *)p; - PGroup *pGroup; - PgHdr1 *pPage = 0; - - assert( pCache->bPurgeable || createFlag!=1 ); - assert( pCache->bPurgeable || pCache->nMin==0 ); - assert( pCache->bPurgeable==0 || pCache->nMin==10 ); - assert( pCache->nMin==0 || pCache->bPurgeable ); - pcache1EnterMutex(pGroup = pCache->pGroup); - - /* Step 1: Search the hash table for an existing entry. */ - if( pCache->nHash>0 ){ - unsigned int h = iKey % pCache->nHash; - for(pPage=pCache->apHash[h]; pPage&&pPage->iKey!=iKey; pPage=pPage->pNext); - } - - /* Step 2: Abort if no existing page is found and createFlag is 0 */ - if( pPage || createFlag==0 ){ - pcache1PinPage(pPage); - goto fetch_out; - } - - /* The pGroup local variable will normally be initialized by the - ** pcache1EnterMutex() macro above. But if SQLITE_MUTEX_OMIT is defined, - ** then pcache1EnterMutex() is a no-op, so we have to initialize the - ** local variable here. Delaying the initialization of pGroup is an - ** optimization: The common case is to exit the module before reaching - ** this point. - */ -#ifdef SQLITE_MUTEX_OMIT - pGroup = pCache->pGroup; -#endif - - - /* Step 3: Abort if createFlag is 1 but the cache is nearly full */ - nPinned = pCache->nPage - pCache->nRecyclable; - assert( nPinned>=0 ); - assert( pGroup->mxPinned == pGroup->nMaxPage + 10 - pGroup->nMinPage ); - assert( pCache->n90pct == pCache->nMax*9/10 ); - if( createFlag==1 && ( - nPinned>=pGroup->mxPinned - || nPinned>=(int)pCache->n90pct - || pcache1UnderMemoryPressure(pCache) - )){ - goto fetch_out; - } - - if( pCache->nPage>=pCache->nHash && pcache1ResizeHash(pCache) ){ - goto fetch_out; - } - - /* Step 4. Try to recycle a page. */ - if( pCache->bPurgeable && pGroup->pLruTail && ( - (pCache->nPage+1>=pCache->nMax) - || pGroup->nCurrentPage>=pGroup->nMaxPage - || pcache1UnderMemoryPressure(pCache) - )){ - PCache1 *pOtherCache; - pPage = pGroup->pLruTail; - pcache1RemoveFromHash(pPage); - pcache1PinPage(pPage); - if( (pOtherCache = pPage->pCache)->szPage!=pCache->szPage ){ - pcache1FreePage(pPage); - pPage = 0; - }else{ - pGroup->nCurrentPage -= - (pOtherCache->bPurgeable - pCache->bPurgeable); - } - } - - /* Step 5. If a usable page buffer has still not been found, - ** attempt to allocate a new one. - */ - if( !pPage ){ - if( createFlag==1 ) sqlite3BeginBenignMalloc(); - pPage = pcache1AllocPage(pCache); - if( createFlag==1 ) sqlite3EndBenignMalloc(); - } - - if( pPage ){ - unsigned int h = iKey % pCache->nHash; - pCache->nPage++; - pPage->iKey = iKey; - pPage->pNext = pCache->apHash[h]; - pPage->pCache = pCache; - pPage->pLruPrev = 0; - pPage->pLruNext = 0; - *(void **)(PGHDR1_TO_PAGE(pPage)) = 0; - pCache->apHash[h] = pPage; - } - -fetch_out: - if( pPage && iKey>pCache->iMaxKey ){ - pCache->iMaxKey = iKey; - } - pcache1LeaveMutex(pGroup); - return (pPage ? PGHDR1_TO_PAGE(pPage) : 0); -} - - -/* -** Implementation of the sqlite3_pcache.xUnpin method. -** -** Mark a page as unpinned (eligible for asynchronous recycling). -*/ -static void pcache1Unpin(sqlite3_pcache *p, void *pPg, int reuseUnlikely){ - PCache1 *pCache = (PCache1 *)p; - PgHdr1 *pPage = PAGE_TO_PGHDR1(pCache, pPg); - PGroup *pGroup = pCache->pGroup; - - assert( pPage->pCache==pCache ); - pcache1EnterMutex(pGroup); - - /* It is an error to call this function if the page is already - ** part of the PGroup LRU list. - */ - assert( pPage->pLruPrev==0 && pPage->pLruNext==0 ); - assert( pGroup->pLruHead!=pPage && pGroup->pLruTail!=pPage ); - - if( reuseUnlikely || pGroup->nCurrentPage>pGroup->nMaxPage ){ - pcache1RemoveFromHash(pPage); - pcache1FreePage(pPage); - }else{ - /* Add the page to the PGroup LRU list. */ - if( pGroup->pLruHead ){ - pGroup->pLruHead->pLruPrev = pPage; - pPage->pLruNext = pGroup->pLruHead; - pGroup->pLruHead = pPage; - }else{ - pGroup->pLruTail = pPage; - pGroup->pLruHead = pPage; - } - pCache->nRecyclable++; - } - - pcache1LeaveMutex(pCache->pGroup); -} - -/* -** Implementation of the sqlite3_pcache.xRekey method. -*/ -static void pcache1Rekey( - sqlite3_pcache *p, - void *pPg, - unsigned int iOld, - unsigned int iNew -){ - PCache1 *pCache = (PCache1 *)p; - PgHdr1 *pPage = PAGE_TO_PGHDR1(pCache, pPg); - PgHdr1 **pp; - unsigned int h; - assert( pPage->iKey==iOld ); - assert( pPage->pCache==pCache ); - - pcache1EnterMutex(pCache->pGroup); - - h = iOld%pCache->nHash; - pp = &pCache->apHash[h]; - while( (*pp)!=pPage ){ - pp = &(*pp)->pNext; - } - *pp = pPage->pNext; - - h = iNew%pCache->nHash; - pPage->iKey = iNew; - pPage->pNext = pCache->apHash[h]; - pCache->apHash[h] = pPage; - if( iNew>pCache->iMaxKey ){ - pCache->iMaxKey = iNew; - } - - pcache1LeaveMutex(pCache->pGroup); -} - -/* -** Implementation of the sqlite3_pcache.xTruncate method. -** -** Discard all unpinned pages in the cache with a page number equal to -** or greater than parameter iLimit. Any pinned pages with a page number -** equal to or greater than iLimit are implicitly unpinned. -*/ -static void pcache1Truncate(sqlite3_pcache *p, unsigned int iLimit){ - PCache1 *pCache = (PCache1 *)p; - pcache1EnterMutex(pCache->pGroup); - if( iLimit<=pCache->iMaxKey ){ - pcache1TruncateUnsafe(pCache, iLimit); - pCache->iMaxKey = iLimit-1; - } - pcache1LeaveMutex(pCache->pGroup); -} - -/* -** Implementation of the sqlite3_pcache.xDestroy method. -** -** Destroy a cache allocated using pcache1Create(). -*/ -static void pcache1Destroy(sqlite3_pcache *p){ - PCache1 *pCache = (PCache1 *)p; - PGroup *pGroup = pCache->pGroup; - assert( pCache->bPurgeable || (pCache->nMax==0 && pCache->nMin==0) ); - pcache1EnterMutex(pGroup); - pcache1TruncateUnsafe(pCache, 0); - pGroup->nMaxPage -= pCache->nMax; - pGroup->nMinPage -= pCache->nMin; - pGroup->mxPinned = pGroup->nMaxPage + 10 - pGroup->nMinPage; - pcache1EnforceMaxPage(pGroup); - pcache1LeaveMutex(pGroup); - sqlite3_free(pCache->apHash); - sqlite3_free(pCache); -} - -/* -** This function is called during initialization (sqlite3_initialize()) to -** install the default pluggable cache module, assuming the user has not -** already provided an alternative. -*/ -void sqlite3PCacheSetDefault(void){ - static const sqlite3_pcache_methods defaultMethods = { - 0, /* pArg */ - pcache1Init, /* xInit */ - pcache1Shutdown, /* xShutdown */ - pcache1Create, /* xCreate */ - pcache1Cachesize, /* xCachesize */ - pcache1Pagecount, /* xPagecount */ - pcache1Fetch, /* xFetch */ - pcache1Unpin, /* xUnpin */ - pcache1Rekey, /* xRekey */ - pcache1Truncate, /* xTruncate */ - pcache1Destroy /* xDestroy */ - }; - sqlite3_config(SQLITE_CONFIG_PCACHE, &defaultMethods); -} - -#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT -/* -** This function is called to free superfluous dynamically allocated memory -** held by the pager system. Memory in use by any SQLite pager allocated -** by the current thread may be sqlite3_free()ed. -** -** nReq is the number of bytes of memory required. Once this much has -** been released, the function returns. The return value is the total number -** of bytes of memory released. -*/ -int sqlite3PcacheReleaseMemory(int nReq){ - int nFree = 0; - assert( sqlite3_mutex_notheld(pcache1.grp.mutex) ); - assert( sqlite3_mutex_notheld(pcache1.mutex) ); - if( pcache1.pStart==0 ){ - PgHdr1 *p; - pcache1EnterMutex(&pcache1.grp); - while( (nReq<0 || nFreepLruNext){ - nRecyclable++; - } - *pnCurrent = pcache1.grp.nCurrentPage; - *pnMax = pcache1.grp.nMaxPage; - *pnMin = pcache1.grp.nMinPage; - *pnRecyclable = nRecyclable; -} -#endif diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/pragma.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/pragma.c deleted file mode 100644 index f80089bd64..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/pragma.c +++ /dev/null @@ -1,1528 +0,0 @@ -/* -** 2003 April 6 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file contains code used to implement the PRAGMA command. -*/ -#include "sqliteInt.h" - -/* -** Interpret the given string as a safety level. Return 0 for OFF, -** 1 for ON or NORMAL and 2 for FULL. Return 1 for an empty or -** unrecognized string argument. -** -** Note that the values returned are one less that the values that -** should be passed into sqlite3BtreeSetSafetyLevel(). The is done -** to support legacy SQL code. The safety level used to be boolean -** and older scripts may have used numbers 0 for OFF and 1 for ON. -*/ -static u8 getSafetyLevel(const char *z){ - /* 123456789 123456789 */ - static const char zText[] = "onoffalseyestruefull"; - static const u8 iOffset[] = {0, 1, 2, 4, 9, 12, 16}; - static const u8 iLength[] = {2, 2, 3, 5, 3, 4, 4}; - static const u8 iValue[] = {1, 0, 0, 0, 1, 1, 2}; - int i, n; - if( sqlite3Isdigit(*z) ){ - return (u8)sqlite3Atoi(z); - } - n = sqlite3Strlen30(z); - for(i=0; i=0&&i<=2)?i:0); -} -#endif /* ifndef SQLITE_OMIT_AUTOVACUUM */ - -#ifndef SQLITE_OMIT_PAGER_PRAGMAS -/* -** Interpret the given string as a temp db location. Return 1 for file -** backed temporary databases, 2 for the Red-Black tree in memory database -** and 0 to use the compile-time default. -*/ -static int getTempStore(const char *z){ - if( z[0]>='0' && z[0]<='2' ){ - return z[0] - '0'; - }else if( sqlite3StrICmp(z, "file")==0 ){ - return 1; - }else if( sqlite3StrICmp(z, "memory")==0 ){ - return 2; - }else{ - return 0; - } -} -#endif /* SQLITE_PAGER_PRAGMAS */ - -#ifndef SQLITE_OMIT_PAGER_PRAGMAS -/* -** Invalidate temp storage, either when the temp storage is changed -** from default, or when 'file' and the temp_store_directory has changed -*/ -static int invalidateTempStorage(Parse *pParse){ - sqlite3 *db = pParse->db; - if( db->aDb[1].pBt!=0 ){ - if( !db->autoCommit || sqlite3BtreeIsInReadTrans(db->aDb[1].pBt) ){ - sqlite3ErrorMsg(pParse, "temporary storage cannot be changed " - "from within a transaction"); - return SQLITE_ERROR; - } - sqlite3BtreeClose(db->aDb[1].pBt); - db->aDb[1].pBt = 0; - sqlite3ResetInternalSchema(db, -1); - } - return SQLITE_OK; -} -#endif /* SQLITE_PAGER_PRAGMAS */ - -#ifndef SQLITE_OMIT_PAGER_PRAGMAS -/* -** If the TEMP database is open, close it and mark the database schema -** as needing reloading. This must be done when using the SQLITE_TEMP_STORE -** or DEFAULT_TEMP_STORE pragmas. -*/ -static int changeTempStorage(Parse *pParse, const char *zStorageType){ - int ts = getTempStore(zStorageType); - sqlite3 *db = pParse->db; - if( db->temp_store==ts ) return SQLITE_OK; - if( invalidateTempStorage( pParse ) != SQLITE_OK ){ - return SQLITE_ERROR; - } - db->temp_store = (u8)ts; - return SQLITE_OK; -} -#endif /* SQLITE_PAGER_PRAGMAS */ - -/* -** Generate code to return a single integer value. -*/ -static void returnSingleInt(Parse *pParse, const char *zLabel, i64 value){ - Vdbe *v = sqlite3GetVdbe(pParse); - int mem = ++pParse->nMem; - i64 *pI64 = sqlite3DbMallocRaw(pParse->db, sizeof(value)); - if( pI64 ){ - memcpy(pI64, &value, sizeof(value)); - } - sqlite3VdbeAddOp4(v, OP_Int64, 0, mem, 0, (char*)pI64, P4_INT64); - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, zLabel, SQLITE_STATIC); - sqlite3VdbeAddOp2(v, OP_ResultRow, mem, 1); -} - -#ifndef SQLITE_OMIT_FLAG_PRAGMAS -/* -** Check to see if zRight and zLeft refer to a pragma that queries -** or changes one of the flags in db->flags. Return 1 if so and 0 if not. -** Also, implement the pragma. -*/ -static int flagPragma(Parse *pParse, const char *zLeft, const char *zRight){ - static const struct sPragmaType { - const char *zName; /* Name of the pragma */ - int mask; /* Mask for the db->flags value */ - } aPragma[] = { - { "full_column_names", SQLITE_FullColNames }, - { "short_column_names", SQLITE_ShortColNames }, - { "count_changes", SQLITE_CountRows }, - { "empty_result_callbacks", SQLITE_NullCallback }, - { "legacy_file_format", SQLITE_LegacyFileFmt }, - { "fullfsync", SQLITE_FullFSync }, - { "checkpoint_fullfsync", SQLITE_CkptFullFSync }, - { "reverse_unordered_selects", SQLITE_ReverseOrder }, -#ifndef SQLITE_OMIT_AUTOMATIC_INDEX - { "automatic_index", SQLITE_AutoIndex }, -#endif -#ifdef SQLITE_DEBUG - { "sql_trace", SQLITE_SqlTrace }, - { "vdbe_listing", SQLITE_VdbeListing }, - { "vdbe_trace", SQLITE_VdbeTrace }, -#endif -#ifndef SQLITE_OMIT_CHECK - { "ignore_check_constraints", SQLITE_IgnoreChecks }, -#endif - /* The following is VERY experimental */ - { "writable_schema", SQLITE_WriteSchema|SQLITE_RecoveryMode }, - { "omit_readlock", SQLITE_NoReadlock }, - - /* TODO: Maybe it shouldn't be possible to change the ReadUncommitted - ** flag if there are any active statements. */ - { "read_uncommitted", SQLITE_ReadUncommitted }, - { "recursive_triggers", SQLITE_RecTriggers }, - - /* This flag may only be set if both foreign-key and trigger support - ** are present in the build. */ -#if !defined(SQLITE_OMIT_FOREIGN_KEY) && !defined(SQLITE_OMIT_TRIGGER) - { "foreign_keys", SQLITE_ForeignKeys }, -#endif - }; - int i; - const struct sPragmaType *p; - for(i=0, p=aPragma; izName)==0 ){ - sqlite3 *db = pParse->db; - Vdbe *v; - v = sqlite3GetVdbe(pParse); - assert( v!=0 ); /* Already allocated by sqlite3Pragma() */ - if( ALWAYS(v) ){ - if( zRight==0 ){ - returnSingleInt(pParse, p->zName, (db->flags & p->mask)!=0 ); - }else{ - int mask = p->mask; /* Mask of bits to set or clear. */ - if( db->autoCommit==0 ){ - /* Foreign key support may not be enabled or disabled while not - ** in auto-commit mode. */ - mask &= ~(SQLITE_ForeignKeys); - } - - if( sqlite3GetBoolean(zRight) ){ - db->flags |= mask; - }else{ - db->flags &= ~mask; - } - - /* Many of the flag-pragmas modify the code generated by the SQL - ** compiler (eg. count_changes). So add an opcode to expire all - ** compiled SQL statements after modifying a pragma value. - */ - sqlite3VdbeAddOp2(v, OP_Expire, 0, 0); - } - } - - return 1; - } - } - return 0; -} -#endif /* SQLITE_OMIT_FLAG_PRAGMAS */ - -/* -** Return a human-readable name for a constraint resolution action. -*/ -#ifndef SQLITE_OMIT_FOREIGN_KEY -static const char *actionName(u8 action){ - const char *zName; - switch( action ){ - case OE_SetNull: zName = "SET NULL"; break; - case OE_SetDflt: zName = "SET DEFAULT"; break; - case OE_Cascade: zName = "CASCADE"; break; - case OE_Restrict: zName = "RESTRICT"; break; - default: zName = "NO ACTION"; - assert( action==OE_None ); break; - } - return zName; -} -#endif - - -/* -** Parameter eMode must be one of the PAGER_JOURNALMODE_XXX constants -** defined in pager.h. This function returns the associated lowercase -** journal-mode name. -*/ -const char *sqlite3JournalModename(int eMode){ - static char * const azModeName[] = { - "delete", "persist", "off", "truncate", "memory" -#ifndef SQLITE_OMIT_WAL - , "wal" -#endif - }; - assert( PAGER_JOURNALMODE_DELETE==0 ); - assert( PAGER_JOURNALMODE_PERSIST==1 ); - assert( PAGER_JOURNALMODE_OFF==2 ); - assert( PAGER_JOURNALMODE_TRUNCATE==3 ); - assert( PAGER_JOURNALMODE_MEMORY==4 ); - assert( PAGER_JOURNALMODE_WAL==5 ); - assert( eMode>=0 && eMode<=ArraySize(azModeName) ); - - if( eMode==ArraySize(azModeName) ) return 0; - return azModeName[eMode]; -} - -/* -** Process a pragma statement. -** -** Pragmas are of this form: -** -** PRAGMA [database.]id [= value] -** -** The identifier might also be a string. The value is a string, and -** identifier, or a number. If minusFlag is true, then the value is -** a number that was preceded by a minus sign. -** -** If the left side is "database.id" then pId1 is the database name -** and pId2 is the id. If the left side is just "id" then pId1 is the -** id and pId2 is any empty string. -*/ -void sqlite3Pragma( - Parse *pParse, - Token *pId1, /* First part of [database.]id field */ - Token *pId2, /* Second part of [database.]id field, or NULL */ - Token *pValue, /* Token for , or NULL */ - int minusFlag /* True if a '-' sign preceded */ -){ - char *zLeft = 0; /* Nul-terminated UTF-8 string */ - char *zRight = 0; /* Nul-terminated UTF-8 string , or NULL */ - const char *zDb = 0; /* The database name */ - Token *pId; /* Pointer to token */ - int iDb; /* Database index for */ - sqlite3 *db = pParse->db; - Db *pDb; - Vdbe *v = pParse->pVdbe = sqlite3VdbeCreate(db); - if( v==0 ) return; - sqlite3VdbeRunOnlyOnce(v); - pParse->nMem = 2; - - /* Interpret the [database.] part of the pragma statement. iDb is the - ** index of the database this pragma is being applied to in db.aDb[]. */ - iDb = sqlite3TwoPartName(pParse, pId1, pId2, &pId); - if( iDb<0 ) return; - pDb = &db->aDb[iDb]; - - /* If the temp database has been explicitly named as part of the - ** pragma, make sure it is open. - */ - if( iDb==1 && sqlite3OpenTempDatabase(pParse) ){ - return; - } - - zLeft = sqlite3NameFromToken(db, pId); - if( !zLeft ) return; - if( minusFlag ){ - zRight = sqlite3MPrintf(db, "-%T", pValue); - }else{ - zRight = sqlite3NameFromToken(db, pValue); - } - - assert( pId2 ); - zDb = pId2->n>0 ? pDb->zName : 0; - if( sqlite3AuthCheck(pParse, SQLITE_PRAGMA, zLeft, zRight, zDb) ){ - goto pragma_out; - } - -#ifndef SQLITE_OMIT_PAGER_PRAGMAS - /* - ** PRAGMA [database.]default_cache_size - ** PRAGMA [database.]default_cache_size=N - ** - ** The first form reports the current persistent setting for the - ** page cache size. The value returned is the maximum number of - ** pages in the page cache. The second form sets both the current - ** page cache size value and the persistent page cache size value - ** stored in the database file. - ** - ** Older versions of SQLite would set the default cache size to a - ** negative number to indicate synchronous=OFF. These days, synchronous - ** is always on by default regardless of the sign of the default cache - ** size. But continue to take the absolute value of the default cache - ** size of historical compatibility. - */ - if( sqlite3StrICmp(zLeft,"default_cache_size")==0 ){ - static const VdbeOpList getCacheSize[] = { - { OP_Transaction, 0, 0, 0}, /* 0 */ - { OP_ReadCookie, 0, 1, BTREE_DEFAULT_CACHE_SIZE}, /* 1 */ - { OP_IfPos, 1, 7, 0}, - { OP_Integer, 0, 2, 0}, - { OP_Subtract, 1, 2, 1}, - { OP_IfPos, 1, 7, 0}, - { OP_Integer, 0, 1, 0}, /* 6 */ - { OP_ResultRow, 1, 1, 0}, - }; - int addr; - if( sqlite3ReadSchema(pParse) ) goto pragma_out; - sqlite3VdbeUsesBtree(v, iDb); - if( !zRight ){ - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "cache_size", SQLITE_STATIC); - pParse->nMem += 2; - addr = sqlite3VdbeAddOpList(v, ArraySize(getCacheSize), getCacheSize); - sqlite3VdbeChangeP1(v, addr, iDb); - sqlite3VdbeChangeP1(v, addr+1, iDb); - sqlite3VdbeChangeP1(v, addr+6, SQLITE_DEFAULT_CACHE_SIZE); - }else{ - int size = sqlite3AbsInt32(sqlite3Atoi(zRight)); - sqlite3BeginWriteOperation(pParse, 0, iDb); - sqlite3VdbeAddOp2(v, OP_Integer, size, 1); - sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_DEFAULT_CACHE_SIZE, 1); - assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); - pDb->pSchema->cache_size = size; - sqlite3BtreeSetCacheSize(pDb->pBt, pDb->pSchema->cache_size); - } - }else - - /* - ** PRAGMA [database.]page_size - ** PRAGMA [database.]page_size=N - ** - ** The first form reports the current setting for the - ** database page size in bytes. The second form sets the - ** database page size value. The value can only be set if - ** the database has not yet been created. - */ - if( sqlite3StrICmp(zLeft,"page_size")==0 ){ - Btree *pBt = pDb->pBt; - assert( pBt!=0 ); - if( !zRight ){ - int size = ALWAYS(pBt) ? sqlite3BtreeGetPageSize(pBt) : 0; - returnSingleInt(pParse, "page_size", size); - }else{ - /* Malloc may fail when setting the page-size, as there is an internal - ** buffer that the pager module resizes using sqlite3_realloc(). - */ - db->nextPagesize = sqlite3Atoi(zRight); - if( SQLITE_NOMEM==sqlite3BtreeSetPageSize(pBt, db->nextPagesize, -1, 0) ){ - db->mallocFailed = 1; - } - } - }else - - /* - ** PRAGMA [database.]secure_delete - ** PRAGMA [database.]secure_delete=ON/OFF - ** - ** The first form reports the current setting for the - ** secure_delete flag. The second form changes the secure_delete - ** flag setting and reports thenew value. - */ - if( sqlite3StrICmp(zLeft,"secure_delete")==0 ){ - Btree *pBt = pDb->pBt; - int b = -1; - assert( pBt!=0 ); - if( zRight ){ - b = sqlite3GetBoolean(zRight); - } - if( pId2->n==0 && b>=0 ){ - int ii; - for(ii=0; iinDb; ii++){ - sqlite3BtreeSecureDelete(db->aDb[ii].pBt, b); - } - } - b = sqlite3BtreeSecureDelete(pBt, b); - returnSingleInt(pParse, "secure_delete", b); - }else - - /* - ** PRAGMA [database.]max_page_count - ** PRAGMA [database.]max_page_count=N - ** - ** The first form reports the current setting for the - ** maximum number of pages in the database file. The - ** second form attempts to change this setting. Both - ** forms return the current setting. - ** - ** PRAGMA [database.]page_count - ** - ** Return the number of pages in the specified database. - */ - if( sqlite3StrICmp(zLeft,"page_count")==0 - || sqlite3StrICmp(zLeft,"max_page_count")==0 - ){ - int iReg; - if( sqlite3ReadSchema(pParse) ) goto pragma_out; - sqlite3CodeVerifySchema(pParse, iDb); - iReg = ++pParse->nMem; - if( sqlite3Tolower(zLeft[0])=='p' ){ - sqlite3VdbeAddOp2(v, OP_Pagecount, iDb, iReg); - }else{ - sqlite3VdbeAddOp3(v, OP_MaxPgcnt, iDb, iReg, sqlite3Atoi(zRight)); - } - sqlite3VdbeAddOp2(v, OP_ResultRow, iReg, 1); - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, zLeft, SQLITE_TRANSIENT); - }else - - /* - ** PRAGMA [database.]locking_mode - ** PRAGMA [database.]locking_mode = (normal|exclusive) - */ - if( sqlite3StrICmp(zLeft,"locking_mode")==0 ){ - const char *zRet = "normal"; - int eMode = getLockingMode(zRight); - - if( pId2->n==0 && eMode==PAGER_LOCKINGMODE_QUERY ){ - /* Simple "PRAGMA locking_mode;" statement. This is a query for - ** the current default locking mode (which may be different to - ** the locking-mode of the main database). - */ - eMode = db->dfltLockMode; - }else{ - Pager *pPager; - if( pId2->n==0 ){ - /* This indicates that no database name was specified as part - ** of the PRAGMA command. In this case the locking-mode must be - ** set on all attached databases, as well as the main db file. - ** - ** Also, the sqlite3.dfltLockMode variable is set so that - ** any subsequently attached databases also use the specified - ** locking mode. - */ - int ii; - assert(pDb==&db->aDb[0]); - for(ii=2; iinDb; ii++){ - pPager = sqlite3BtreePager(db->aDb[ii].pBt); - sqlite3PagerLockingMode(pPager, eMode); - } - db->dfltLockMode = (u8)eMode; - } - pPager = sqlite3BtreePager(pDb->pBt); - eMode = sqlite3PagerLockingMode(pPager, eMode); - } - - assert(eMode==PAGER_LOCKINGMODE_NORMAL||eMode==PAGER_LOCKINGMODE_EXCLUSIVE); - if( eMode==PAGER_LOCKINGMODE_EXCLUSIVE ){ - zRet = "exclusive"; - } - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "locking_mode", SQLITE_STATIC); - sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, zRet, 0); - sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1); - }else - - /* - ** PRAGMA [database.]journal_mode - ** PRAGMA [database.]journal_mode = - ** (delete|persist|off|truncate|memory|wal|off) - */ - if( sqlite3StrICmp(zLeft,"journal_mode")==0 ){ - int eMode; /* One of the PAGER_JOURNALMODE_XXX symbols */ - int ii; /* Loop counter */ - - /* Force the schema to be loaded on all databases. This causes all - ** database files to be opened and the journal_modes set. This is - ** necessary because subsequent processing must know if the databases - ** are in WAL mode. */ - if( sqlite3ReadSchema(pParse) ){ - goto pragma_out; - } - - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "journal_mode", SQLITE_STATIC); - - if( zRight==0 ){ - /* If there is no "=MODE" part of the pragma, do a query for the - ** current mode */ - eMode = PAGER_JOURNALMODE_QUERY; - }else{ - const char *zMode; - int n = sqlite3Strlen30(zRight); - for(eMode=0; (zMode = sqlite3JournalModename(eMode))!=0; eMode++){ - if( sqlite3StrNICmp(zRight, zMode, n)==0 ) break; - } - if( !zMode ){ - /* If the "=MODE" part does not match any known journal mode, - ** then do a query */ - eMode = PAGER_JOURNALMODE_QUERY; - } - } - if( eMode==PAGER_JOURNALMODE_QUERY && pId2->n==0 ){ - /* Convert "PRAGMA journal_mode" into "PRAGMA main.journal_mode" */ - iDb = 0; - pId2->n = 1; - } - for(ii=db->nDb-1; ii>=0; ii--){ - if( db->aDb[ii].pBt && (ii==iDb || pId2->n==0) ){ - sqlite3VdbeUsesBtree(v, ii); - sqlite3VdbeAddOp3(v, OP_JournalMode, ii, 1, eMode); - } - } - sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1); - }else - - /* - ** PRAGMA [database.]journal_size_limit - ** PRAGMA [database.]journal_size_limit=N - ** - ** Get or set the size limit on rollback journal files. - */ - if( sqlite3StrICmp(zLeft,"journal_size_limit")==0 ){ - Pager *pPager = sqlite3BtreePager(pDb->pBt); - i64 iLimit = -2; - if( zRight ){ - sqlite3Atoi64(zRight, &iLimit, 1000000, SQLITE_UTF8); - if( iLimit<-1 ) iLimit = -1; - } - iLimit = sqlite3PagerJournalSizeLimit(pPager, iLimit); - returnSingleInt(pParse, "journal_size_limit", iLimit); - }else - -#endif /* SQLITE_OMIT_PAGER_PRAGMAS */ - - /* - ** PRAGMA [database.]auto_vacuum - ** PRAGMA [database.]auto_vacuum=N - ** - ** Get or set the value of the database 'auto-vacuum' parameter. - ** The value is one of: 0 NONE 1 FULL 2 INCREMENTAL - */ -#ifndef SQLITE_OMIT_AUTOVACUUM - if( sqlite3StrICmp(zLeft,"auto_vacuum")==0 ){ - Btree *pBt = pDb->pBt; - assert( pBt!=0 ); - if( sqlite3ReadSchema(pParse) ){ - goto pragma_out; - } - if( !zRight ){ - int auto_vacuum; - if( ALWAYS(pBt) ){ - auto_vacuum = sqlite3BtreeGetAutoVacuum(pBt); - }else{ - auto_vacuum = SQLITE_DEFAULT_AUTOVACUUM; - } - returnSingleInt(pParse, "auto_vacuum", auto_vacuum); - }else{ - int eAuto = getAutoVacuum(zRight); - assert( eAuto>=0 && eAuto<=2 ); - db->nextAutovac = (u8)eAuto; - if( ALWAYS(eAuto>=0) ){ - /* Call SetAutoVacuum() to set initialize the internal auto and - ** incr-vacuum flags. This is required in case this connection - ** creates the database file. It is important that it is created - ** as an auto-vacuum capable db. - */ - int rc = sqlite3BtreeSetAutoVacuum(pBt, eAuto); - if( rc==SQLITE_OK && (eAuto==1 || eAuto==2) ){ - /* When setting the auto_vacuum mode to either "full" or - ** "incremental", write the value of meta[6] in the database - ** file. Before writing to meta[6], check that meta[3] indicates - ** that this really is an auto-vacuum capable database. - */ - static const VdbeOpList setMeta6[] = { - { OP_Transaction, 0, 1, 0}, /* 0 */ - { OP_ReadCookie, 0, 1, BTREE_LARGEST_ROOT_PAGE}, - { OP_If, 1, 0, 0}, /* 2 */ - { OP_Halt, SQLITE_OK, OE_Abort, 0}, /* 3 */ - { OP_Integer, 0, 1, 0}, /* 4 */ - { OP_SetCookie, 0, BTREE_INCR_VACUUM, 1}, /* 5 */ - }; - int iAddr; - iAddr = sqlite3VdbeAddOpList(v, ArraySize(setMeta6), setMeta6); - sqlite3VdbeChangeP1(v, iAddr, iDb); - sqlite3VdbeChangeP1(v, iAddr+1, iDb); - sqlite3VdbeChangeP2(v, iAddr+2, iAddr+4); - sqlite3VdbeChangeP1(v, iAddr+4, eAuto-1); - sqlite3VdbeChangeP1(v, iAddr+5, iDb); - sqlite3VdbeUsesBtree(v, iDb); - } - } - } - }else -#endif - - /* - ** PRAGMA [database.]incremental_vacuum(N) - ** - ** Do N steps of incremental vacuuming on a database. - */ -#ifndef SQLITE_OMIT_AUTOVACUUM - if( sqlite3StrICmp(zLeft,"incremental_vacuum")==0 ){ - int iLimit, addr; - if( sqlite3ReadSchema(pParse) ){ - goto pragma_out; - } - if( zRight==0 || !sqlite3GetInt32(zRight, &iLimit) || iLimit<=0 ){ - iLimit = 0x7fffffff; - } - sqlite3BeginWriteOperation(pParse, 0, iDb); - sqlite3VdbeAddOp2(v, OP_Integer, iLimit, 1); - addr = sqlite3VdbeAddOp1(v, OP_IncrVacuum, iDb); - sqlite3VdbeAddOp1(v, OP_ResultRow, 1); - sqlite3VdbeAddOp2(v, OP_AddImm, 1, -1); - sqlite3VdbeAddOp2(v, OP_IfPos, 1, addr); - sqlite3VdbeJumpHere(v, addr); - }else -#endif - -#ifndef SQLITE_OMIT_PAGER_PRAGMAS - /* - ** PRAGMA [database.]cache_size - ** PRAGMA [database.]cache_size=N - ** - ** The first form reports the current local setting for the - ** page cache size. The local setting can be different from - ** the persistent cache size value that is stored in the database - ** file itself. The value returned is the maximum number of - ** pages in the page cache. The second form sets the local - ** page cache size value. It does not change the persistent - ** cache size stored on the disk so the cache size will revert - ** to its default value when the database is closed and reopened. - ** N should be a positive integer. - */ - if( sqlite3StrICmp(zLeft,"cache_size")==0 ){ - if( sqlite3ReadSchema(pParse) ) goto pragma_out; - assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); - if( !zRight ){ - returnSingleInt(pParse, "cache_size", pDb->pSchema->cache_size); - }else{ - int size = sqlite3AbsInt32(sqlite3Atoi(zRight)); - pDb->pSchema->cache_size = size; - sqlite3BtreeSetCacheSize(pDb->pBt, pDb->pSchema->cache_size); - } - }else - - /* - ** PRAGMA temp_store - ** PRAGMA temp_store = "default"|"memory"|"file" - ** - ** Return or set the local value of the temp_store flag. Changing - ** the local value does not make changes to the disk file and the default - ** value will be restored the next time the database is opened. - ** - ** Note that it is possible for the library compile-time options to - ** override this setting - */ - if( sqlite3StrICmp(zLeft, "temp_store")==0 ){ - if( !zRight ){ - returnSingleInt(pParse, "temp_store", db->temp_store); - }else{ - changeTempStorage(pParse, zRight); - } - }else - - /* - ** PRAGMA temp_store_directory - ** PRAGMA temp_store_directory = ""|"directory_name" - ** - ** Return or set the local value of the temp_store_directory flag. Changing - ** the value sets a specific directory to be used for temporary files. - ** Setting to a null string reverts to the default temporary directory search. - ** If temporary directory is changed, then invalidateTempStorage. - ** - */ - if( sqlite3StrICmp(zLeft, "temp_store_directory")==0 ){ - if( !zRight ){ - if( sqlite3_temp_directory ){ - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, - "temp_store_directory", SQLITE_STATIC); - sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, sqlite3_temp_directory, 0); - sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1); - } - }else{ -#ifndef SQLITE_OMIT_WSD - if( zRight[0] ){ - int rc; - int res; - rc = sqlite3OsAccess(db->pVfs, zRight, SQLITE_ACCESS_READWRITE, &res); - if( rc!=SQLITE_OK || res==0 ){ - sqlite3ErrorMsg(pParse, "not a writable directory"); - goto pragma_out; - } - } - if( SQLITE_TEMP_STORE==0 - || (SQLITE_TEMP_STORE==1 && db->temp_store<=1) - || (SQLITE_TEMP_STORE==2 && db->temp_store==1) - ){ - invalidateTempStorage(pParse); - } - sqlite3_free(sqlite3_temp_directory); - if( zRight[0] ){ - sqlite3_temp_directory = sqlite3_mprintf("%s", zRight); - }else{ - sqlite3_temp_directory = 0; - } -#endif /* SQLITE_OMIT_WSD */ - } - }else - -#if !defined(SQLITE_ENABLE_LOCKING_STYLE) -# if defined(__APPLE__) -# define SQLITE_ENABLE_LOCKING_STYLE 1 -# else -# define SQLITE_ENABLE_LOCKING_STYLE 0 -# endif -#endif -#if SQLITE_ENABLE_LOCKING_STYLE - /* - ** PRAGMA [database.]lock_proxy_file - ** PRAGMA [database.]lock_proxy_file = ":auto:"|"lock_file_path" - ** - ** Return or set the value of the lock_proxy_file flag. Changing - ** the value sets a specific file to be used for database access locks. - ** - */ - if( sqlite3StrICmp(zLeft, "lock_proxy_file")==0 ){ - if( !zRight ){ - Pager *pPager = sqlite3BtreePager(pDb->pBt); - char *proxy_file_path = NULL; - sqlite3_file *pFile = sqlite3PagerFile(pPager); - sqlite3OsFileControl(pFile, SQLITE_GET_LOCKPROXYFILE, - &proxy_file_path); - - if( proxy_file_path ){ - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, - "lock_proxy_file", SQLITE_STATIC); - sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, proxy_file_path, 0); - sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1); - } - }else{ - Pager *pPager = sqlite3BtreePager(pDb->pBt); - sqlite3_file *pFile = sqlite3PagerFile(pPager); - int res; - if( zRight[0] ){ - res=sqlite3OsFileControl(pFile, SQLITE_SET_LOCKPROXYFILE, - zRight); - } else { - res=sqlite3OsFileControl(pFile, SQLITE_SET_LOCKPROXYFILE, - NULL); - } - if( res!=SQLITE_OK ){ - sqlite3ErrorMsg(pParse, "failed to set lock proxy file"); - goto pragma_out; - } - } - }else -#endif /* SQLITE_ENABLE_LOCKING_STYLE */ - - /* - ** PRAGMA [database.]synchronous - ** PRAGMA [database.]synchronous=OFF|ON|NORMAL|FULL - ** - ** Return or set the local value of the synchronous flag. Changing - ** the local value does not make changes to the disk file and the - ** default value will be restored the next time the database is - ** opened. - */ - if( sqlite3StrICmp(zLeft,"synchronous")==0 ){ - if( sqlite3ReadSchema(pParse) ) goto pragma_out; - if( !zRight ){ - returnSingleInt(pParse, "synchronous", pDb->safety_level-1); - }else{ - if( !db->autoCommit ){ - sqlite3ErrorMsg(pParse, - "Safety level may not be changed inside a transaction"); - }else{ - pDb->safety_level = getSafetyLevel(zRight)+1; - } - } - }else -#endif /* SQLITE_OMIT_PAGER_PRAGMAS */ - -#ifndef SQLITE_OMIT_FLAG_PRAGMAS - if( flagPragma(pParse, zLeft, zRight) ){ - /* The flagPragma() subroutine also generates any necessary code - ** there is nothing more to do here */ - }else -#endif /* SQLITE_OMIT_FLAG_PRAGMAS */ - -#ifndef SQLITE_OMIT_SCHEMA_PRAGMAS - /* - ** PRAGMA table_info(
    • ) - ** - ** Return a single row for each column of the named table. The columns of - ** the returned data set are: - ** - ** cid: Column id (numbered from left to right, starting at 0) - ** name: Column name - ** type: Column declaration type. - ** notnull: True if 'NOT NULL' is part of column declaration - ** dflt_value: The default value for the column, if any. - */ - if( sqlite3StrICmp(zLeft, "table_info")==0 && zRight ){ - Table *pTab; - if( sqlite3ReadSchema(pParse) ) goto pragma_out; - pTab = sqlite3FindTable(db, zRight, zDb); - if( pTab ){ - int i; - int nHidden = 0; - Column *pCol; - sqlite3VdbeSetNumCols(v, 6); - pParse->nMem = 6; - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "cid", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "type", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 3, COLNAME_NAME, "notnull", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 4, COLNAME_NAME, "dflt_value", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 5, COLNAME_NAME, "pk", SQLITE_STATIC); - sqlite3ViewGetColumnNames(pParse, pTab); - for(i=0, pCol=pTab->aCol; inCol; i++, pCol++){ - if( IsHiddenColumn(pCol) ){ - nHidden++; - continue; - } - sqlite3VdbeAddOp2(v, OP_Integer, i-nHidden, 1); - sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, pCol->zName, 0); - sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, - pCol->zType ? pCol->zType : "", 0); - sqlite3VdbeAddOp2(v, OP_Integer, (pCol->notNull ? 1 : 0), 4); - if( pCol->zDflt ){ - sqlite3VdbeAddOp4(v, OP_String8, 0, 5, 0, (char*)pCol->zDflt, 0); - }else{ - sqlite3VdbeAddOp2(v, OP_Null, 0, 5); - } - sqlite3VdbeAddOp2(v, OP_Integer, pCol->isPrimKey, 6); - sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 6); - } - } - }else - - if( sqlite3StrICmp(zLeft, "index_info")==0 && zRight ){ - Index *pIdx; - Table *pTab; - if( sqlite3ReadSchema(pParse) ) goto pragma_out; - pIdx = sqlite3FindIndex(db, zRight, zDb); - if( pIdx ){ - int i; - pTab = pIdx->pTable; - sqlite3VdbeSetNumCols(v, 3); - pParse->nMem = 3; - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seqno", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "cid", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "name", SQLITE_STATIC); - for(i=0; inColumn; i++){ - int cnum = pIdx->aiColumn[i]; - sqlite3VdbeAddOp2(v, OP_Integer, i, 1); - sqlite3VdbeAddOp2(v, OP_Integer, cnum, 2); - assert( pTab->nCol>cnum ); - sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, pTab->aCol[cnum].zName, 0); - sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 3); - } - } - }else - - if( sqlite3StrICmp(zLeft, "index_list")==0 && zRight ){ - Index *pIdx; - Table *pTab; - if( sqlite3ReadSchema(pParse) ) goto pragma_out; - pTab = sqlite3FindTable(db, zRight, zDb); - if( pTab ){ - v = sqlite3GetVdbe(pParse); - pIdx = pTab->pIndex; - if( pIdx ){ - int i = 0; - sqlite3VdbeSetNumCols(v, 3); - pParse->nMem = 3; - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seq", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "unique", SQLITE_STATIC); - while(pIdx){ - sqlite3VdbeAddOp2(v, OP_Integer, i, 1); - sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, pIdx->zName, 0); - sqlite3VdbeAddOp2(v, OP_Integer, pIdx->onError!=OE_None, 3); - sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 3); - ++i; - pIdx = pIdx->pNext; - } - } - } - }else - - if( sqlite3StrICmp(zLeft, "database_list")==0 ){ - int i; - if( sqlite3ReadSchema(pParse) ) goto pragma_out; - sqlite3VdbeSetNumCols(v, 3); - pParse->nMem = 3; - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seq", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "file", SQLITE_STATIC); - for(i=0; inDb; i++){ - if( db->aDb[i].pBt==0 ) continue; - assert( db->aDb[i].zName!=0 ); - sqlite3VdbeAddOp2(v, OP_Integer, i, 1); - sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, db->aDb[i].zName, 0); - sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, - sqlite3BtreeGetFilename(db->aDb[i].pBt), 0); - sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 3); - } - }else - - if( sqlite3StrICmp(zLeft, "collation_list")==0 ){ - int i = 0; - HashElem *p; - sqlite3VdbeSetNumCols(v, 2); - pParse->nMem = 2; - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seq", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", SQLITE_STATIC); - for(p=sqliteHashFirst(&db->aCollSeq); p; p=sqliteHashNext(p)){ - CollSeq *pColl = (CollSeq *)sqliteHashData(p); - sqlite3VdbeAddOp2(v, OP_Integer, i++, 1); - sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, pColl->zName, 0); - sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 2); - } - }else -#endif /* SQLITE_OMIT_SCHEMA_PRAGMAS */ - -#ifndef SQLITE_OMIT_FOREIGN_KEY - if( sqlite3StrICmp(zLeft, "foreign_key_list")==0 && zRight ){ - FKey *pFK; - Table *pTab; - if( sqlite3ReadSchema(pParse) ) goto pragma_out; - pTab = sqlite3FindTable(db, zRight, zDb); - if( pTab ){ - v = sqlite3GetVdbe(pParse); - pFK = pTab->pFKey; - if( pFK ){ - int i = 0; - sqlite3VdbeSetNumCols(v, 8); - pParse->nMem = 8; - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "id", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "seq", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "table", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 3, COLNAME_NAME, "from", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 4, COLNAME_NAME, "to", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 5, COLNAME_NAME, "on_update", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 6, COLNAME_NAME, "on_delete", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 7, COLNAME_NAME, "match", SQLITE_STATIC); - while(pFK){ - int j; - for(j=0; jnCol; j++){ - char *zCol = pFK->aCol[j].zCol; - char *zOnDelete = (char *)actionName(pFK->aAction[0]); - char *zOnUpdate = (char *)actionName(pFK->aAction[1]); - sqlite3VdbeAddOp2(v, OP_Integer, i, 1); - sqlite3VdbeAddOp2(v, OP_Integer, j, 2); - sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, pFK->zTo, 0); - sqlite3VdbeAddOp4(v, OP_String8, 0, 4, 0, - pTab->aCol[pFK->aCol[j].iFrom].zName, 0); - sqlite3VdbeAddOp4(v, zCol ? OP_String8 : OP_Null, 0, 5, 0, zCol, 0); - sqlite3VdbeAddOp4(v, OP_String8, 0, 6, 0, zOnUpdate, 0); - sqlite3VdbeAddOp4(v, OP_String8, 0, 7, 0, zOnDelete, 0); - sqlite3VdbeAddOp4(v, OP_String8, 0, 8, 0, "NONE", 0); - sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 8); - } - ++i; - pFK = pFK->pNextFrom; - } - } - } - }else -#endif /* !defined(SQLITE_OMIT_FOREIGN_KEY) */ - -#ifndef NDEBUG - if( sqlite3StrICmp(zLeft, "parser_trace")==0 ){ - if( zRight ){ - if( sqlite3GetBoolean(zRight) ){ - sqlite3ParserTrace(stderr, "parser: "); - }else{ - sqlite3ParserTrace(0, 0); - } - } - }else -#endif - - /* Reinstall the LIKE and GLOB functions. The variant of LIKE - ** used will be case sensitive or not depending on the RHS. - */ - if( sqlite3StrICmp(zLeft, "case_sensitive_like")==0 ){ - if( zRight ){ - sqlite3RegisterLikeFunctions(db, sqlite3GetBoolean(zRight)); - } - }else - -#ifndef SQLITE_INTEGRITY_CHECK_ERROR_MAX -# define SQLITE_INTEGRITY_CHECK_ERROR_MAX 100 -#endif - -#ifndef SQLITE_OMIT_INTEGRITY_CHECK - /* Pragma "quick_check" is an experimental reduced version of - ** integrity_check designed to detect most database corruption - ** without most of the overhead of a full integrity-check. - */ - if( sqlite3StrICmp(zLeft, "integrity_check")==0 - || sqlite3StrICmp(zLeft, "quick_check")==0 - ){ - int i, j, addr, mxErr; - - /* Code that appears at the end of the integrity check. If no error - ** messages have been generated, output OK. Otherwise output the - ** error message - */ - static const VdbeOpList endCode[] = { - { OP_AddImm, 1, 0, 0}, /* 0 */ - { OP_IfNeg, 1, 0, 0}, /* 1 */ - { OP_String8, 0, 3, 0}, /* 2 */ - { OP_ResultRow, 3, 1, 0}, - }; - - int isQuick = (sqlite3Tolower(zLeft[0])=='q'); - - /* Initialize the VDBE program */ - if( sqlite3ReadSchema(pParse) ) goto pragma_out; - pParse->nMem = 6; - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "integrity_check", SQLITE_STATIC); - - /* Set the maximum error count */ - mxErr = SQLITE_INTEGRITY_CHECK_ERROR_MAX; - if( zRight ){ - sqlite3GetInt32(zRight, &mxErr); - if( mxErr<=0 ){ - mxErr = SQLITE_INTEGRITY_CHECK_ERROR_MAX; - } - } - sqlite3VdbeAddOp2(v, OP_Integer, mxErr, 1); /* reg[1] holds errors left */ - - /* Do an integrity check on each database file */ - for(i=0; inDb; i++){ - HashElem *x; - Hash *pTbls; - int cnt = 0; - - if( OMIT_TEMPDB && i==1 ) continue; - - sqlite3CodeVerifySchema(pParse, i); - addr = sqlite3VdbeAddOp1(v, OP_IfPos, 1); /* Halt if out of errors */ - sqlite3VdbeAddOp2(v, OP_Halt, 0, 0); - sqlite3VdbeJumpHere(v, addr); - - /* Do an integrity check of the B-Tree - ** - ** Begin by filling registers 2, 3, ... with the root pages numbers - ** for all tables and indices in the database. - */ - assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); - pTbls = &db->aDb[i].pSchema->tblHash; - for(x=sqliteHashFirst(pTbls); x; x=sqliteHashNext(x)){ - Table *pTab = sqliteHashData(x); - Index *pIdx; - sqlite3VdbeAddOp2(v, OP_Integer, pTab->tnum, 2+cnt); - cnt++; - for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ - sqlite3VdbeAddOp2(v, OP_Integer, pIdx->tnum, 2+cnt); - cnt++; - } - } - - /* Make sure sufficient number of registers have been allocated */ - if( pParse->nMem < cnt+4 ){ - pParse->nMem = cnt+4; - } - - /* Do the b-tree integrity checks */ - sqlite3VdbeAddOp3(v, OP_IntegrityCk, 2, cnt, 1); - sqlite3VdbeChangeP5(v, (u8)i); - addr = sqlite3VdbeAddOp1(v, OP_IsNull, 2); - sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, - sqlite3MPrintf(db, "*** in database %s ***\n", db->aDb[i].zName), - P4_DYNAMIC); - sqlite3VdbeAddOp3(v, OP_Move, 2, 4, 1); - sqlite3VdbeAddOp3(v, OP_Concat, 4, 3, 2); - sqlite3VdbeAddOp2(v, OP_ResultRow, 2, 1); - sqlite3VdbeJumpHere(v, addr); - - /* Make sure all the indices are constructed correctly. - */ - for(x=sqliteHashFirst(pTbls); x && !isQuick; x=sqliteHashNext(x)){ - Table *pTab = sqliteHashData(x); - Index *pIdx; - int loopTop; - - if( pTab->pIndex==0 ) continue; - addr = sqlite3VdbeAddOp1(v, OP_IfPos, 1); /* Stop if out of errors */ - sqlite3VdbeAddOp2(v, OP_Halt, 0, 0); - sqlite3VdbeJumpHere(v, addr); - sqlite3OpenTableAndIndices(pParse, pTab, 1, OP_OpenRead); - sqlite3VdbeAddOp2(v, OP_Integer, 0, 2); /* reg(2) will count entries */ - loopTop = sqlite3VdbeAddOp2(v, OP_Rewind, 1, 0); - sqlite3VdbeAddOp2(v, OP_AddImm, 2, 1); /* increment entry count */ - for(j=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, j++){ - int jmp2; - int r1; - static const VdbeOpList idxErr[] = { - { OP_AddImm, 1, -1, 0}, - { OP_String8, 0, 3, 0}, /* 1 */ - { OP_Rowid, 1, 4, 0}, - { OP_String8, 0, 5, 0}, /* 3 */ - { OP_String8, 0, 6, 0}, /* 4 */ - { OP_Concat, 4, 3, 3}, - { OP_Concat, 5, 3, 3}, - { OP_Concat, 6, 3, 3}, - { OP_ResultRow, 3, 1, 0}, - { OP_IfPos, 1, 0, 0}, /* 9 */ - { OP_Halt, 0, 0, 0}, - }; - r1 = sqlite3GenerateIndexKey(pParse, pIdx, 1, 3, 0); - jmp2 = sqlite3VdbeAddOp4Int(v, OP_Found, j+2, 0, r1, pIdx->nColumn+1); - addr = sqlite3VdbeAddOpList(v, ArraySize(idxErr), idxErr); - sqlite3VdbeChangeP4(v, addr+1, "rowid ", P4_STATIC); - sqlite3VdbeChangeP4(v, addr+3, " missing from index ", P4_STATIC); - sqlite3VdbeChangeP4(v, addr+4, pIdx->zName, P4_TRANSIENT); - sqlite3VdbeJumpHere(v, addr+9); - sqlite3VdbeJumpHere(v, jmp2); - } - sqlite3VdbeAddOp2(v, OP_Next, 1, loopTop+1); - sqlite3VdbeJumpHere(v, loopTop); - for(j=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, j++){ - static const VdbeOpList cntIdx[] = { - { OP_Integer, 0, 3, 0}, - { OP_Rewind, 0, 0, 0}, /* 1 */ - { OP_AddImm, 3, 1, 0}, - { OP_Next, 0, 0, 0}, /* 3 */ - { OP_Eq, 2, 0, 3}, /* 4 */ - { OP_AddImm, 1, -1, 0}, - { OP_String8, 0, 2, 0}, /* 6 */ - { OP_String8, 0, 3, 0}, /* 7 */ - { OP_Concat, 3, 2, 2}, - { OP_ResultRow, 2, 1, 0}, - }; - addr = sqlite3VdbeAddOp1(v, OP_IfPos, 1); - sqlite3VdbeAddOp2(v, OP_Halt, 0, 0); - sqlite3VdbeJumpHere(v, addr); - addr = sqlite3VdbeAddOpList(v, ArraySize(cntIdx), cntIdx); - sqlite3VdbeChangeP1(v, addr+1, j+2); - sqlite3VdbeChangeP2(v, addr+1, addr+4); - sqlite3VdbeChangeP1(v, addr+3, j+2); - sqlite3VdbeChangeP2(v, addr+3, addr+2); - sqlite3VdbeJumpHere(v, addr+4); - sqlite3VdbeChangeP4(v, addr+6, - "wrong # of entries in index ", P4_STATIC); - sqlite3VdbeChangeP4(v, addr+7, pIdx->zName, P4_TRANSIENT); - } - } - } - addr = sqlite3VdbeAddOpList(v, ArraySize(endCode), endCode); - sqlite3VdbeChangeP2(v, addr, -mxErr); - sqlite3VdbeJumpHere(v, addr+1); - sqlite3VdbeChangeP4(v, addr+2, "ok", P4_STATIC); - }else -#endif /* SQLITE_OMIT_INTEGRITY_CHECK */ - -#ifndef SQLITE_OMIT_UTF16 - /* - ** PRAGMA encoding - ** PRAGMA encoding = "utf-8"|"utf-16"|"utf-16le"|"utf-16be" - ** - ** In its first form, this pragma returns the encoding of the main - ** database. If the database is not initialized, it is initialized now. - ** - ** The second form of this pragma is a no-op if the main database file - ** has not already been initialized. In this case it sets the default - ** encoding that will be used for the main database file if a new file - ** is created. If an existing main database file is opened, then the - ** default text encoding for the existing database is used. - ** - ** In all cases new databases created using the ATTACH command are - ** created to use the same default text encoding as the main database. If - ** the main database has not been initialized and/or created when ATTACH - ** is executed, this is done before the ATTACH operation. - ** - ** In the second form this pragma sets the text encoding to be used in - ** new database files created using this database handle. It is only - ** useful if invoked immediately after the main database i - */ - if( sqlite3StrICmp(zLeft, "encoding")==0 ){ - static const struct EncName { - char *zName; - u8 enc; - } encnames[] = { - { "UTF8", SQLITE_UTF8 }, - { "UTF-8", SQLITE_UTF8 }, /* Must be element [1] */ - { "UTF-16le", SQLITE_UTF16LE }, /* Must be element [2] */ - { "UTF-16be", SQLITE_UTF16BE }, /* Must be element [3] */ - { "UTF16le", SQLITE_UTF16LE }, - { "UTF16be", SQLITE_UTF16BE }, - { "UTF-16", 0 }, /* SQLITE_UTF16NATIVE */ - { "UTF16", 0 }, /* SQLITE_UTF16NATIVE */ - { 0, 0 } - }; - const struct EncName *pEnc; - if( !zRight ){ /* "PRAGMA encoding" */ - if( sqlite3ReadSchema(pParse) ) goto pragma_out; - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "encoding", SQLITE_STATIC); - sqlite3VdbeAddOp2(v, OP_String8, 0, 1); - assert( encnames[SQLITE_UTF8].enc==SQLITE_UTF8 ); - assert( encnames[SQLITE_UTF16LE].enc==SQLITE_UTF16LE ); - assert( encnames[SQLITE_UTF16BE].enc==SQLITE_UTF16BE ); - sqlite3VdbeChangeP4(v, -1, encnames[ENC(pParse->db)].zName, P4_STATIC); - sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1); - }else{ /* "PRAGMA encoding = XXX" */ - /* Only change the value of sqlite.enc if the database handle is not - ** initialized. If the main database exists, the new sqlite.enc value - ** will be overwritten when the schema is next loaded. If it does not - ** already exists, it will be created to use the new encoding value. - */ - if( - !(DbHasProperty(db, 0, DB_SchemaLoaded)) || - DbHasProperty(db, 0, DB_Empty) - ){ - for(pEnc=&encnames[0]; pEnc->zName; pEnc++){ - if( 0==sqlite3StrICmp(zRight, pEnc->zName) ){ - ENC(pParse->db) = pEnc->enc ? pEnc->enc : SQLITE_UTF16NATIVE; - break; - } - } - if( !pEnc->zName ){ - sqlite3ErrorMsg(pParse, "unsupported encoding: %s", zRight); - } - } - } - }else -#endif /* SQLITE_OMIT_UTF16 */ - -#ifndef SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS - /* - ** PRAGMA [database.]schema_version - ** PRAGMA [database.]schema_version = - ** - ** PRAGMA [database.]user_version - ** PRAGMA [database.]user_version = - ** - ** The pragma's schema_version and user_version are used to set or get - ** the value of the schema-version and user-version, respectively. Both - ** the schema-version and the user-version are 32-bit signed integers - ** stored in the database header. - ** - ** The schema-cookie is usually only manipulated internally by SQLite. It - ** is incremented by SQLite whenever the database schema is modified (by - ** creating or dropping a table or index). The schema version is used by - ** SQLite each time a query is executed to ensure that the internal cache - ** of the schema used when compiling the SQL query matches the schema of - ** the database against which the compiled query is actually executed. - ** Subverting this mechanism by using "PRAGMA schema_version" to modify - ** the schema-version is potentially dangerous and may lead to program - ** crashes or database corruption. Use with caution! - ** - ** The user-version is not used internally by SQLite. It may be used by - ** applications for any purpose. - */ - if( sqlite3StrICmp(zLeft, "schema_version")==0 - || sqlite3StrICmp(zLeft, "user_version")==0 - || sqlite3StrICmp(zLeft, "freelist_count")==0 - ){ - int iCookie; /* Cookie index. 1 for schema-cookie, 6 for user-cookie. */ - sqlite3VdbeUsesBtree(v, iDb); - switch( zLeft[0] ){ - case 'f': case 'F': - iCookie = BTREE_FREE_PAGE_COUNT; - break; - case 's': case 'S': - iCookie = BTREE_SCHEMA_VERSION; - break; - default: - iCookie = BTREE_USER_VERSION; - break; - } - - if( zRight && iCookie!=BTREE_FREE_PAGE_COUNT ){ - /* Write the specified cookie value */ - static const VdbeOpList setCookie[] = { - { OP_Transaction, 0, 1, 0}, /* 0 */ - { OP_Integer, 0, 1, 0}, /* 1 */ - { OP_SetCookie, 0, 0, 1}, /* 2 */ - }; - int addr = sqlite3VdbeAddOpList(v, ArraySize(setCookie), setCookie); - sqlite3VdbeChangeP1(v, addr, iDb); - sqlite3VdbeChangeP1(v, addr+1, sqlite3Atoi(zRight)); - sqlite3VdbeChangeP1(v, addr+2, iDb); - sqlite3VdbeChangeP2(v, addr+2, iCookie); - }else{ - /* Read the specified cookie value */ - static const VdbeOpList readCookie[] = { - { OP_Transaction, 0, 0, 0}, /* 0 */ - { OP_ReadCookie, 0, 1, 0}, /* 1 */ - { OP_ResultRow, 1, 1, 0} - }; - int addr = sqlite3VdbeAddOpList(v, ArraySize(readCookie), readCookie); - sqlite3VdbeChangeP1(v, addr, iDb); - sqlite3VdbeChangeP1(v, addr+1, iDb); - sqlite3VdbeChangeP3(v, addr+1, iCookie); - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, zLeft, SQLITE_TRANSIENT); - } - }else -#endif /* SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS */ - -#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS - /* - ** PRAGMA compile_options - ** - ** Return the names of all compile-time options used in this build, - ** one option per row. - */ - if( sqlite3StrICmp(zLeft, "compile_options")==0 ){ - int i = 0; - const char *zOpt; - sqlite3VdbeSetNumCols(v, 1); - pParse->nMem = 1; - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "compile_option", SQLITE_STATIC); - while( (zOpt = sqlite3_compileoption_get(i++))!=0 ){ - sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, zOpt, 0); - sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1); - } - }else -#endif /* SQLITE_OMIT_COMPILEOPTION_DIAGS */ - -#ifndef SQLITE_OMIT_WAL - /* - ** PRAGMA [database.]wal_checkpoint = passive|full|restart - ** - ** Checkpoint the database. - */ - if( sqlite3StrICmp(zLeft, "wal_checkpoint")==0 ){ - int iBt = (pId2->z?iDb:SQLITE_MAX_ATTACHED); - int eMode = SQLITE_CHECKPOINT_PASSIVE; - if( zRight ){ - if( sqlite3StrICmp(zRight, "full")==0 ){ - eMode = SQLITE_CHECKPOINT_FULL; - }else if( sqlite3StrICmp(zRight, "restart")==0 ){ - eMode = SQLITE_CHECKPOINT_RESTART; - } - } - if( sqlite3ReadSchema(pParse) ) goto pragma_out; - sqlite3VdbeSetNumCols(v, 3); - pParse->nMem = 3; - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "busy", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "log", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "checkpointed", SQLITE_STATIC); - - sqlite3VdbeAddOp3(v, OP_Checkpoint, iBt, eMode, 1); - sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 3); - }else - - /* - ** PRAGMA wal_autocheckpoint - ** PRAGMA wal_autocheckpoint = N - ** - ** Configure a database connection to automatically checkpoint a database - ** after accumulating N frames in the log. Or query for the current value - ** of N. - */ - if( sqlite3StrICmp(zLeft, "wal_autocheckpoint")==0 ){ - if( zRight ){ - sqlite3_wal_autocheckpoint(db, sqlite3Atoi(zRight)); - } - returnSingleInt(pParse, "wal_autocheckpoint", - db->xWalCallback==sqlite3WalDefaultHook ? - SQLITE_PTR_TO_INT(db->pWalArg) : 0); - }else -#endif - -#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST) - /* - ** Report the current state of file logs for all databases - */ - if( sqlite3StrICmp(zLeft, "lock_status")==0 ){ - static const char *const azLockName[] = { - "unlocked", "shared", "reserved", "pending", "exclusive" - }; - int i; - sqlite3VdbeSetNumCols(v, 2); - pParse->nMem = 2; - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "database", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "status", SQLITE_STATIC); - for(i=0; inDb; i++){ - Btree *pBt; - Pager *pPager; - const char *zState = "unknown"; - int j; - if( db->aDb[i].zName==0 ) continue; - sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, db->aDb[i].zName, P4_STATIC); - pBt = db->aDb[i].pBt; - if( pBt==0 || (pPager = sqlite3BtreePager(pBt))==0 ){ - zState = "closed"; - }else if( sqlite3_file_control(db, i ? db->aDb[i].zName : 0, - SQLITE_FCNTL_LOCKSTATE, &j)==SQLITE_OK ){ - zState = azLockName[j]; - } - sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, zState, P4_STATIC); - sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 2); - } - - }else -#endif - -#ifdef SQLITE_HAS_CODEC - if( sqlite3StrICmp(zLeft, "key")==0 && zRight ){ - sqlite3_key(db, zRight, sqlite3Strlen30(zRight)); - }else - if( sqlite3StrICmp(zLeft, "rekey")==0 && zRight ){ - sqlite3_rekey(db, zRight, sqlite3Strlen30(zRight)); - }else - if( zRight && (sqlite3StrICmp(zLeft, "hexkey")==0 || - sqlite3StrICmp(zLeft, "hexrekey")==0) ){ - int i, h1, h2; - char zKey[40]; - for(i=0; (h1 = zRight[i])!=0 && (h2 = zRight[i+1])!=0; i+=2){ - h1 += 9*(1&(h1>>6)); - h2 += 9*(1&(h2>>6)); - zKey[i/2] = (h2 & 0x0f) | ((h1 & 0xf)<<4); - } - if( (zLeft[3] & 0xf)==0xb ){ - sqlite3_key(db, zKey, i/2); - }else{ - sqlite3_rekey(db, zKey, i/2); - } - }else -#endif -#if defined(SQLITE_HAS_CODEC) || defined(SQLITE_ENABLE_CEROD) - if( sqlite3StrICmp(zLeft, "activate_extensions")==0 ){ -#ifdef SQLITE_HAS_CODEC - if( sqlite3StrNICmp(zRight, "see-", 4)==0 ){ - sqlite3_activate_see(&zRight[4]); - } -#endif -#ifdef SQLITE_ENABLE_CEROD - if( sqlite3StrNICmp(zRight, "cerod-", 6)==0 ){ - sqlite3_activate_cerod(&zRight[6]); - } -#endif - }else -#endif - - - {/* Empty ELSE clause */} - - /* - ** Reset the safety level, in case the fullfsync flag or synchronous - ** setting changed. - */ -#ifndef SQLITE_OMIT_PAGER_PRAGMAS - if( db->autoCommit ){ - sqlite3BtreeSetSafetyLevel(pDb->pBt, pDb->safety_level, - (db->flags&SQLITE_FullFSync)!=0, - (db->flags&SQLITE_CkptFullFSync)!=0); - } -#endif -pragma_out: - sqlite3DbFree(db, zLeft); - sqlite3DbFree(db, zRight); -} - -#endif /* SQLITE_OMIT_PRAGMA */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/prepare.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/prepare.c deleted file mode 100644 index e93821e0e8..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/prepare.c +++ /dev/null @@ -1,858 +0,0 @@ -/* -** 2005 May 25 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file contains the implementation of the sqlite3_prepare() -** interface, and routines that contribute to loading the database schema -** from disk. -*/ -#include "sqliteInt.h" - -/* -** Fill the InitData structure with an error message that indicates -** that the database is corrupt. -*/ -static void corruptSchema( - InitData *pData, /* Initialization context */ - const char *zObj, /* Object being parsed at the point of error */ - const char *zExtra /* Error information */ -){ - sqlite3 *db = pData->db; - if( !db->mallocFailed && (db->flags & SQLITE_RecoveryMode)==0 ){ - if( zObj==0 ) zObj = "?"; - sqlite3SetString(pData->pzErrMsg, db, - "malformed database schema (%s)", zObj); - if( zExtra ){ - *pData->pzErrMsg = sqlite3MAppendf(db, *pData->pzErrMsg, - "%s - %s", *pData->pzErrMsg, zExtra); - } - } - pData->rc = db->mallocFailed ? SQLITE_NOMEM : SQLITE_CORRUPT_BKPT; -} - -/* -** This is the callback routine for the code that initializes the -** database. See sqlite3Init() below for additional information. -** This routine is also called from the OP_ParseSchema opcode of the VDBE. -** -** Each callback contains the following information: -** -** argv[0] = name of thing being created -** argv[1] = root page number for table or index. 0 for trigger or view. -** argv[2] = SQL text for the CREATE statement. -** -*/ -int sqlite3InitCallback(void *pInit, int argc, char **argv, char **NotUsed){ - InitData *pData = (InitData*)pInit; - sqlite3 *db = pData->db; - int iDb = pData->iDb; - - assert( argc==3 ); - UNUSED_PARAMETER2(NotUsed, argc); - assert( sqlite3_mutex_held(db->mutex) ); - DbClearProperty(db, iDb, DB_Empty); - if( db->mallocFailed ){ - corruptSchema(pData, argv[0], 0); - return 1; - } - - assert( iDb>=0 && iDbnDb ); - if( argv==0 ) return 0; /* Might happen if EMPTY_RESULT_CALLBACKS are on */ - if( argv[1]==0 ){ - corruptSchema(pData, argv[0], 0); - }else if( argv[2] && argv[2][0] ){ - /* Call the parser to process a CREATE TABLE, INDEX or VIEW. - ** But because db->init.busy is set to 1, no VDBE code is generated - ** or executed. All the parser does is build the internal data - ** structures that describe the table, index, or view. - */ - int rc; - sqlite3_stmt *pStmt; - TESTONLY(int rcp); /* Return code from sqlite3_prepare() */ - - assert( db->init.busy ); - db->init.iDb = iDb; - db->init.newTnum = sqlite3Atoi(argv[1]); - db->init.orphanTrigger = 0; - TESTONLY(rcp = ) sqlite3_prepare(db, argv[2], -1, &pStmt, 0); - rc = db->errCode; - assert( (rc&0xFF)==(rcp&0xFF) ); - db->init.iDb = 0; - if( SQLITE_OK!=rc ){ - if( db->init.orphanTrigger ){ - assert( iDb==1 ); - }else{ - pData->rc = rc; - if( rc==SQLITE_NOMEM ){ - db->mallocFailed = 1; - }else if( rc!=SQLITE_INTERRUPT && (rc&0xFF)!=SQLITE_LOCKED ){ - corruptSchema(pData, argv[0], sqlite3_errmsg(db)); - } - } - } - sqlite3_finalize(pStmt); - }else if( argv[0]==0 ){ - corruptSchema(pData, 0, 0); - }else{ - /* If the SQL column is blank it means this is an index that - ** was created to be the PRIMARY KEY or to fulfill a UNIQUE - ** constraint for a CREATE TABLE. The index should have already - ** been created when we processed the CREATE TABLE. All we have - ** to do here is record the root page number for that index. - */ - Index *pIndex; - pIndex = sqlite3FindIndex(db, argv[0], db->aDb[iDb].zName); - if( pIndex==0 ){ - /* This can occur if there exists an index on a TEMP table which - ** has the same name as another index on a permanent index. Since - ** the permanent table is hidden by the TEMP table, we can also - ** safely ignore the index on the permanent table. - */ - /* Do Nothing */; - }else if( sqlite3GetInt32(argv[1], &pIndex->tnum)==0 ){ - corruptSchema(pData, argv[0], "invalid rootpage"); - } - } - return 0; -} - -/* -** Attempt to read the database schema and initialize internal -** data structures for a single database file. The index of the -** database file is given by iDb. iDb==0 is used for the main -** database. iDb==1 should never be used. iDb>=2 is used for -** auxiliary databases. Return one of the SQLITE_ error codes to -** indicate success or failure. -*/ -static int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg){ - int rc; - int i; - int size; - Table *pTab; - Db *pDb; - char const *azArg[4]; - int meta[5]; - InitData initData; - char const *zMasterSchema; - char const *zMasterName; - int openedTransaction = 0; - - /* - ** The master database table has a structure like this - */ - static const char master_schema[] = - "CREATE TABLE sqlite_master(\n" - " type text,\n" - " name text,\n" - " tbl_name text,\n" - " rootpage integer,\n" - " sql text\n" - ")" - ; -#ifndef SQLITE_OMIT_TEMPDB - static const char temp_master_schema[] = - "CREATE TEMP TABLE sqlite_temp_master(\n" - " type text,\n" - " name text,\n" - " tbl_name text,\n" - " rootpage integer,\n" - " sql text\n" - ")" - ; -#else - #define temp_master_schema 0 -#endif - - assert( iDb>=0 && iDbnDb ); - assert( db->aDb[iDb].pSchema ); - assert( sqlite3_mutex_held(db->mutex) ); - assert( iDb==1 || sqlite3BtreeHoldsMutex(db->aDb[iDb].pBt) ); - - /* zMasterSchema and zInitScript are set to point at the master schema - ** and initialisation script appropriate for the database being - ** initialised. zMasterName is the name of the master table. - */ - if( !OMIT_TEMPDB && iDb==1 ){ - zMasterSchema = temp_master_schema; - }else{ - zMasterSchema = master_schema; - } - zMasterName = SCHEMA_TABLE(iDb); - - /* Construct the schema tables. */ - azArg[0] = zMasterName; - azArg[1] = "1"; - azArg[2] = zMasterSchema; - azArg[3] = 0; - initData.db = db; - initData.iDb = iDb; - initData.rc = SQLITE_OK; - initData.pzErrMsg = pzErrMsg; - sqlite3InitCallback(&initData, 3, (char **)azArg, 0); - if( initData.rc ){ - rc = initData.rc; - goto error_out; - } - pTab = sqlite3FindTable(db, zMasterName, db->aDb[iDb].zName); - if( ALWAYS(pTab) ){ - pTab->tabFlags |= TF_Readonly; - } - - /* Create a cursor to hold the database open - */ - pDb = &db->aDb[iDb]; - if( pDb->pBt==0 ){ - if( !OMIT_TEMPDB && ALWAYS(iDb==1) ){ - DbSetProperty(db, 1, DB_SchemaLoaded); - } - return SQLITE_OK; - } - - /* If there is not already a read-only (or read-write) transaction opened - ** on the b-tree database, open one now. If a transaction is opened, it - ** will be closed before this function returns. */ - sqlite3BtreeEnter(pDb->pBt); - if( !sqlite3BtreeIsInReadTrans(pDb->pBt) ){ - rc = sqlite3BtreeBeginTrans(pDb->pBt, 0); - if( rc!=SQLITE_OK ){ - sqlite3SetString(pzErrMsg, db, "%s", sqlite3ErrStr(rc)); - goto initone_error_out; - } - openedTransaction = 1; - } - - /* Get the database meta information. - ** - ** Meta values are as follows: - ** meta[0] Schema cookie. Changes with each schema change. - ** meta[1] File format of schema layer. - ** meta[2] Size of the page cache. - ** meta[3] Largest rootpage (auto/incr_vacuum mode) - ** meta[4] Db text encoding. 1:UTF-8 2:UTF-16LE 3:UTF-16BE - ** meta[5] User version - ** meta[6] Incremental vacuum mode - ** meta[7] unused - ** meta[8] unused - ** meta[9] unused - ** - ** Note: The #defined SQLITE_UTF* symbols in sqliteInt.h correspond to - ** the possible values of meta[4]. - */ - for(i=0; ipBt, i+1, (u32 *)&meta[i]); - } - pDb->pSchema->schema_cookie = meta[BTREE_SCHEMA_VERSION-1]; - - /* If opening a non-empty database, check the text encoding. For the - ** main database, set sqlite3.enc to the encoding of the main database. - ** For an attached db, it is an error if the encoding is not the same - ** as sqlite3.enc. - */ - if( meta[BTREE_TEXT_ENCODING-1] ){ /* text encoding */ - if( iDb==0 ){ - u8 encoding; - /* If opening the main database, set ENC(db). */ - encoding = (u8)meta[BTREE_TEXT_ENCODING-1] & 3; - if( encoding==0 ) encoding = SQLITE_UTF8; - ENC(db) = encoding; - db->pDfltColl = sqlite3FindCollSeq(db, SQLITE_UTF8, "BINARY", 0); - }else{ - /* If opening an attached database, the encoding much match ENC(db) */ - if( meta[BTREE_TEXT_ENCODING-1]!=ENC(db) ){ - sqlite3SetString(pzErrMsg, db, "attached databases must use the same" - " text encoding as main database"); - rc = SQLITE_ERROR; - goto initone_error_out; - } - } - }else{ - DbSetProperty(db, iDb, DB_Empty); - } - pDb->pSchema->enc = ENC(db); - - if( pDb->pSchema->cache_size==0 ){ - size = sqlite3AbsInt32(meta[BTREE_DEFAULT_CACHE_SIZE-1]); - if( size==0 ){ size = SQLITE_DEFAULT_CACHE_SIZE; } - pDb->pSchema->cache_size = size; - sqlite3BtreeSetCacheSize(pDb->pBt, pDb->pSchema->cache_size); - } - - /* - ** file_format==1 Version 3.0.0. - ** file_format==2 Version 3.1.3. // ALTER TABLE ADD COLUMN - ** file_format==3 Version 3.1.4. // ditto but with non-NULL defaults - ** file_format==4 Version 3.3.0. // DESC indices. Boolean constants - */ - pDb->pSchema->file_format = (u8)meta[BTREE_FILE_FORMAT-1]; - if( pDb->pSchema->file_format==0 ){ - pDb->pSchema->file_format = 1; - } - if( pDb->pSchema->file_format>SQLITE_MAX_FILE_FORMAT ){ - sqlite3SetString(pzErrMsg, db, "unsupported file format"); - rc = SQLITE_ERROR; - goto initone_error_out; - } - - /* Ticket #2804: When we open a database in the newer file format, - ** clear the legacy_file_format pragma flag so that a VACUUM will - ** not downgrade the database and thus invalidate any descending - ** indices that the user might have created. - */ - if( iDb==0 && meta[BTREE_FILE_FORMAT-1]>=4 ){ - db->flags &= ~SQLITE_LegacyFileFmt; - } - - /* Read the schema information out of the schema tables - */ - assert( db->init.busy ); - { - char *zSql; - zSql = sqlite3MPrintf(db, - "SELECT name, rootpage, sql FROM '%q'.%s ORDER BY rowid", - db->aDb[iDb].zName, zMasterName); -#ifndef SQLITE_OMIT_AUTHORIZATION - { - int (*xAuth)(void*,int,const char*,const char*,const char*,const char*); - xAuth = db->xAuth; - db->xAuth = 0; -#endif - rc = sqlite3_exec(db, zSql, sqlite3InitCallback, &initData, 0); -#ifndef SQLITE_OMIT_AUTHORIZATION - db->xAuth = xAuth; - } -#endif - if( rc==SQLITE_OK ) rc = initData.rc; - sqlite3DbFree(db, zSql); -#ifndef SQLITE_OMIT_ANALYZE - if( rc==SQLITE_OK ){ - sqlite3AnalysisLoad(db, iDb); - } -#endif - } - if( db->mallocFailed ){ - rc = SQLITE_NOMEM; - sqlite3ResetInternalSchema(db, -1); - } - if( rc==SQLITE_OK || (db->flags&SQLITE_RecoveryMode)){ - /* Black magic: If the SQLITE_RecoveryMode flag is set, then consider - ** the schema loaded, even if errors occurred. In this situation the - ** current sqlite3_prepare() operation will fail, but the following one - ** will attempt to compile the supplied statement against whatever subset - ** of the schema was loaded before the error occurred. The primary - ** purpose of this is to allow access to the sqlite_master table - ** even when its contents have been corrupted. - */ - DbSetProperty(db, iDb, DB_SchemaLoaded); - rc = SQLITE_OK; - } - - /* Jump here for an error that occurs after successfully allocating - ** curMain and calling sqlite3BtreeEnter(). For an error that occurs - ** before that point, jump to error_out. - */ -initone_error_out: - if( openedTransaction ){ - sqlite3BtreeCommit(pDb->pBt); - } - sqlite3BtreeLeave(pDb->pBt); - -error_out: - if( rc==SQLITE_NOMEM || rc==SQLITE_IOERR_NOMEM ){ - db->mallocFailed = 1; - } - return rc; -} - -/* -** Initialize all database files - the main database file, the file -** used to store temporary tables, and any additional database files -** created using ATTACH statements. Return a success code. If an -** error occurs, write an error message into *pzErrMsg. -** -** After a database is initialized, the DB_SchemaLoaded bit is set -** bit is set in the flags field of the Db structure. If the database -** file was of zero-length, then the DB_Empty flag is also set. -*/ -int sqlite3Init(sqlite3 *db, char **pzErrMsg){ - int i, rc; - int commit_internal = !(db->flags&SQLITE_InternChanges); - - assert( sqlite3_mutex_held(db->mutex) ); - rc = SQLITE_OK; - db->init.busy = 1; - for(i=0; rc==SQLITE_OK && inDb; i++){ - if( DbHasProperty(db, i, DB_SchemaLoaded) || i==1 ) continue; - rc = sqlite3InitOne(db, i, pzErrMsg); - if( rc ){ - sqlite3ResetInternalSchema(db, i); - } - } - - /* Once all the other databases have been initialised, load the schema - ** for the TEMP database. This is loaded last, as the TEMP database - ** schema may contain references to objects in other databases. - */ -#ifndef SQLITE_OMIT_TEMPDB - if( rc==SQLITE_OK && ALWAYS(db->nDb>1) - && !DbHasProperty(db, 1, DB_SchemaLoaded) ){ - rc = sqlite3InitOne(db, 1, pzErrMsg); - if( rc ){ - sqlite3ResetInternalSchema(db, 1); - } - } -#endif - - db->init.busy = 0; - if( rc==SQLITE_OK && commit_internal ){ - sqlite3CommitInternalChanges(db); - } - - return rc; -} - -/* -** This routine is a no-op if the database schema is already initialised. -** Otherwise, the schema is loaded. An error code is returned. -*/ -int sqlite3ReadSchema(Parse *pParse){ - int rc = SQLITE_OK; - sqlite3 *db = pParse->db; - assert( sqlite3_mutex_held(db->mutex) ); - if( !db->init.busy ){ - rc = sqlite3Init(db, &pParse->zErrMsg); - } - if( rc!=SQLITE_OK ){ - pParse->rc = rc; - pParse->nErr++; - } - return rc; -} - - -/* -** Check schema cookies in all databases. If any cookie is out -** of date set pParse->rc to SQLITE_SCHEMA. If all schema cookies -** make no changes to pParse->rc. -*/ -static void schemaIsValid(Parse *pParse){ - sqlite3 *db = pParse->db; - int iDb; - int rc; - int cookie; - - assert( pParse->checkSchema ); - assert( sqlite3_mutex_held(db->mutex) ); - for(iDb=0; iDbnDb; iDb++){ - int openedTransaction = 0; /* True if a transaction is opened */ - Btree *pBt = db->aDb[iDb].pBt; /* Btree database to read cookie from */ - if( pBt==0 ) continue; - - /* If there is not already a read-only (or read-write) transaction opened - ** on the b-tree database, open one now. If a transaction is opened, it - ** will be closed immediately after reading the meta-value. */ - if( !sqlite3BtreeIsInReadTrans(pBt) ){ - rc = sqlite3BtreeBeginTrans(pBt, 0); - if( rc==SQLITE_NOMEM || rc==SQLITE_IOERR_NOMEM ){ - db->mallocFailed = 1; - } - if( rc!=SQLITE_OK ) return; - openedTransaction = 1; - } - - /* Read the schema cookie from the database. If it does not match the - ** value stored as part of the in-memory schema representation, - ** set Parse.rc to SQLITE_SCHEMA. */ - sqlite3BtreeGetMeta(pBt, BTREE_SCHEMA_VERSION, (u32 *)&cookie); - assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); - if( cookie!=db->aDb[iDb].pSchema->schema_cookie ){ - sqlite3ResetInternalSchema(db, iDb); - pParse->rc = SQLITE_SCHEMA; - } - - /* Close the transaction, if one was opened. */ - if( openedTransaction ){ - sqlite3BtreeCommit(pBt); - } - } -} - -/* -** Convert a schema pointer into the iDb index that indicates -** which database file in db->aDb[] the schema refers to. -** -** If the same database is attached more than once, the first -** attached database is returned. -*/ -int sqlite3SchemaToIndex(sqlite3 *db, Schema *pSchema){ - int i = -1000000; - - /* If pSchema is NULL, then return -1000000. This happens when code in - ** expr.c is trying to resolve a reference to a transient table (i.e. one - ** created by a sub-select). In this case the return value of this - ** function should never be used. - ** - ** We return -1000000 instead of the more usual -1 simply because using - ** -1000000 as the incorrect index into db->aDb[] is much - ** more likely to cause a segfault than -1 (of course there are assert() - ** statements too, but it never hurts to play the odds). - */ - assert( sqlite3_mutex_held(db->mutex) ); - if( pSchema ){ - for(i=0; ALWAYS(inDb); i++){ - if( db->aDb[i].pSchema==pSchema ){ - break; - } - } - assert( i>=0 && inDb ); - } - return i; -} - -/* -** Compile the UTF-8 encoded SQL statement zSql into a statement handle. -*/ -static int sqlite3Prepare( - sqlite3 *db, /* Database handle. */ - const char *zSql, /* UTF-8 encoded SQL statement. */ - int nBytes, /* Length of zSql in bytes. */ - int saveSqlFlag, /* True to copy SQL text into the sqlite3_stmt */ - Vdbe *pReprepare, /* VM being reprepared */ - sqlite3_stmt **ppStmt, /* OUT: A pointer to the prepared statement */ - const char **pzTail /* OUT: End of parsed string */ -){ - Parse *pParse; /* Parsing context */ - char *zErrMsg = 0; /* Error message */ - int rc = SQLITE_OK; /* Result code */ - int i; /* Loop counter */ - - /* Allocate the parsing context */ - pParse = sqlite3StackAllocZero(db, sizeof(*pParse)); - if( pParse==0 ){ - rc = SQLITE_NOMEM; - goto end_prepare; - } - pParse->pReprepare = pReprepare; - assert( ppStmt && *ppStmt==0 ); - assert( !db->mallocFailed ); - assert( sqlite3_mutex_held(db->mutex) ); - - /* Check to verify that it is possible to get a read lock on all - ** database schemas. The inability to get a read lock indicates that - ** some other database connection is holding a write-lock, which in - ** turn means that the other connection has made uncommitted changes - ** to the schema. - ** - ** Were we to proceed and prepare the statement against the uncommitted - ** schema changes and if those schema changes are subsequently rolled - ** back and different changes are made in their place, then when this - ** prepared statement goes to run the schema cookie would fail to detect - ** the schema change. Disaster would follow. - ** - ** This thread is currently holding mutexes on all Btrees (because - ** of the sqlite3BtreeEnterAll() in sqlite3LockAndPrepare()) so it - ** is not possible for another thread to start a new schema change - ** while this routine is running. Hence, we do not need to hold - ** locks on the schema, we just need to make sure nobody else is - ** holding them. - ** - ** Note that setting READ_UNCOMMITTED overrides most lock detection, - ** but it does *not* override schema lock detection, so this all still - ** works even if READ_UNCOMMITTED is set. - */ - for(i=0; inDb; i++) { - Btree *pBt = db->aDb[i].pBt; - if( pBt ){ - assert( sqlite3BtreeHoldsMutex(pBt) ); - rc = sqlite3BtreeSchemaLocked(pBt); - if( rc ){ - const char *zDb = db->aDb[i].zName; - sqlite3Error(db, rc, "database schema is locked: %s", zDb); - testcase( db->flags & SQLITE_ReadUncommitted ); - goto end_prepare; - } - } - } - - sqlite3VtabUnlockList(db); - - pParse->db = db; - pParse->nQueryLoop = (double)1; - if( nBytes>=0 && (nBytes==0 || zSql[nBytes-1]!=0) ){ - char *zSqlCopy; - int mxLen = db->aLimit[SQLITE_LIMIT_SQL_LENGTH]; - testcase( nBytes==mxLen ); - testcase( nBytes==mxLen+1 ); - if( nBytes>mxLen ){ - sqlite3Error(db, SQLITE_TOOBIG, "statement too long"); - rc = sqlite3ApiExit(db, SQLITE_TOOBIG); - goto end_prepare; - } - zSqlCopy = sqlite3DbStrNDup(db, zSql, nBytes); - if( zSqlCopy ){ - sqlite3RunParser(pParse, zSqlCopy, &zErrMsg); - sqlite3DbFree(db, zSqlCopy); - pParse->zTail = &zSql[pParse->zTail-zSqlCopy]; - }else{ - pParse->zTail = &zSql[nBytes]; - } - }else{ - sqlite3RunParser(pParse, zSql, &zErrMsg); - } - assert( 1==(int)pParse->nQueryLoop ); - - if( db->mallocFailed ){ - pParse->rc = SQLITE_NOMEM; - } - if( pParse->rc==SQLITE_DONE ) pParse->rc = SQLITE_OK; - if( pParse->checkSchema ){ - schemaIsValid(pParse); - } - if( db->mallocFailed ){ - pParse->rc = SQLITE_NOMEM; - } - if( pzTail ){ - *pzTail = pParse->zTail; - } - rc = pParse->rc; - -#ifndef SQLITE_OMIT_EXPLAIN - if( rc==SQLITE_OK && pParse->pVdbe && pParse->explain ){ - static const char * const azColName[] = { - "addr", "opcode", "p1", "p2", "p3", "p4", "p5", "comment", - "selectid", "order", "from", "detail" - }; - int iFirst, mx; - if( pParse->explain==2 ){ - sqlite3VdbeSetNumCols(pParse->pVdbe, 4); - iFirst = 8; - mx = 12; - }else{ - sqlite3VdbeSetNumCols(pParse->pVdbe, 8); - iFirst = 0; - mx = 8; - } - for(i=iFirst; ipVdbe, i-iFirst, COLNAME_NAME, - azColName[i], SQLITE_STATIC); - } - } -#endif - - assert( db->init.busy==0 || saveSqlFlag==0 ); - if( db->init.busy==0 ){ - Vdbe *pVdbe = pParse->pVdbe; - sqlite3VdbeSetSql(pVdbe, zSql, (int)(pParse->zTail-zSql), saveSqlFlag); - } - if( pParse->pVdbe && (rc!=SQLITE_OK || db->mallocFailed) ){ - sqlite3VdbeFinalize(pParse->pVdbe); - assert(!(*ppStmt)); - }else{ - *ppStmt = (sqlite3_stmt*)pParse->pVdbe; - } - - if( zErrMsg ){ - sqlite3Error(db, rc, "%s", zErrMsg); - sqlite3DbFree(db, zErrMsg); - }else{ - sqlite3Error(db, rc, 0); - } - - /* Delete any TriggerPrg structures allocated while parsing this statement. */ - while( pParse->pTriggerPrg ){ - TriggerPrg *pT = pParse->pTriggerPrg; - pParse->pTriggerPrg = pT->pNext; - sqlite3DbFree(db, pT); - } - -end_prepare: - - sqlite3StackFree(db, pParse); - rc = sqlite3ApiExit(db, rc); - assert( (rc&db->errMask)==rc ); - return rc; -} -static int sqlite3LockAndPrepare( - sqlite3 *db, /* Database handle. */ - const char *zSql, /* UTF-8 encoded SQL statement. */ - int nBytes, /* Length of zSql in bytes. */ - int saveSqlFlag, /* True to copy SQL text into the sqlite3_stmt */ - Vdbe *pOld, /* VM being reprepared */ - sqlite3_stmt **ppStmt, /* OUT: A pointer to the prepared statement */ - const char **pzTail /* OUT: End of parsed string */ -){ - int rc; - assert( ppStmt!=0 ); - *ppStmt = 0; - if( !sqlite3SafetyCheckOk(db) ){ - return SQLITE_MISUSE_BKPT; - } - sqlite3_mutex_enter(db->mutex); - sqlite3BtreeEnterAll(db); - rc = sqlite3Prepare(db, zSql, nBytes, saveSqlFlag, pOld, ppStmt, pzTail); - if( rc==SQLITE_SCHEMA ){ - sqlite3_finalize(*ppStmt); - rc = sqlite3Prepare(db, zSql, nBytes, saveSqlFlag, pOld, ppStmt, pzTail); - } - sqlite3BtreeLeaveAll(db); - sqlite3_mutex_leave(db->mutex); - return rc; -} - -/* -** Rerun the compilation of a statement after a schema change. -** -** If the statement is successfully recompiled, return SQLITE_OK. Otherwise, -** if the statement cannot be recompiled because another connection has -** locked the sqlite3_master table, return SQLITE_LOCKED. If any other error -** occurs, return SQLITE_SCHEMA. -*/ -int sqlite3Reprepare(Vdbe *p){ - int rc; - sqlite3_stmt *pNew; - const char *zSql; - sqlite3 *db; - - assert( sqlite3_mutex_held(sqlite3VdbeDb(p)->mutex) ); - zSql = sqlite3_sql((sqlite3_stmt *)p); - assert( zSql!=0 ); /* Reprepare only called for prepare_v2() statements */ - db = sqlite3VdbeDb(p); - assert( sqlite3_mutex_held(db->mutex) ); - rc = sqlite3LockAndPrepare(db, zSql, -1, 0, p, &pNew, 0); - if( rc ){ - if( rc==SQLITE_NOMEM ){ - db->mallocFailed = 1; - } - assert( pNew==0 ); - return rc; - }else{ - assert( pNew!=0 ); - } - sqlite3VdbeSwap((Vdbe*)pNew, p); - sqlite3TransferBindings(pNew, (sqlite3_stmt*)p); - sqlite3VdbeResetStepResult((Vdbe*)pNew); - sqlite3VdbeFinalize((Vdbe*)pNew); - return SQLITE_OK; -} - - -/* -** Two versions of the official API. Legacy and new use. In the legacy -** version, the original SQL text is not saved in the prepared statement -** and so if a schema change occurs, SQLITE_SCHEMA is returned by -** sqlite3_step(). In the new version, the original SQL text is retained -** and the statement is automatically recompiled if an schema change -** occurs. -*/ -int sqlite3_prepare( - sqlite3 *db, /* Database handle. */ - const char *zSql, /* UTF-8 encoded SQL statement. */ - int nBytes, /* Length of zSql in bytes. */ - sqlite3_stmt **ppStmt, /* OUT: A pointer to the prepared statement */ - const char **pzTail /* OUT: End of parsed string */ -){ - int rc; - rc = sqlite3LockAndPrepare(db,zSql,nBytes,0,0,ppStmt,pzTail); - assert( rc==SQLITE_OK || ppStmt==0 || *ppStmt==0 ); /* VERIFY: F13021 */ - return rc; -} -int sqlite3_prepare_v2( - sqlite3 *db, /* Database handle. */ - const char *zSql, /* UTF-8 encoded SQL statement. */ - int nBytes, /* Length of zSql in bytes. */ - sqlite3_stmt **ppStmt, /* OUT: A pointer to the prepared statement */ - const char **pzTail /* OUT: End of parsed string */ -){ - int rc; - rc = sqlite3LockAndPrepare(db,zSql,nBytes,1,0,ppStmt,pzTail); - assert( rc==SQLITE_OK || ppStmt==0 || *ppStmt==0 ); /* VERIFY: F13021 */ - return rc; -} - - -#ifndef SQLITE_OMIT_UTF16 -/* -** Compile the UTF-16 encoded SQL statement zSql into a statement handle. -*/ -static int sqlite3Prepare16( - sqlite3 *db, /* Database handle. */ - const void *zSql, /* UTF-16 encoded SQL statement. */ - int nBytes, /* Length of zSql in bytes. */ - int saveSqlFlag, /* True to save SQL text into the sqlite3_stmt */ - sqlite3_stmt **ppStmt, /* OUT: A pointer to the prepared statement */ - const void **pzTail /* OUT: End of parsed string */ -){ - /* This function currently works by first transforming the UTF-16 - ** encoded string to UTF-8, then invoking sqlite3_prepare(). The - ** tricky bit is figuring out the pointer to return in *pzTail. - */ - char *zSql8; - const char *zTail8 = 0; - int rc = SQLITE_OK; - - assert( ppStmt ); - *ppStmt = 0; - if( !sqlite3SafetyCheckOk(db) ){ - return SQLITE_MISUSE_BKPT; - } - sqlite3_mutex_enter(db->mutex); - zSql8 = sqlite3Utf16to8(db, zSql, nBytes, SQLITE_UTF16NATIVE); - if( zSql8 ){ - rc = sqlite3LockAndPrepare(db, zSql8, -1, saveSqlFlag, 0, ppStmt, &zTail8); - } - - if( zTail8 && pzTail ){ - /* If sqlite3_prepare returns a tail pointer, we calculate the - ** equivalent pointer into the UTF-16 string by counting the unicode - ** characters between zSql8 and zTail8, and then returning a pointer - ** the same number of characters into the UTF-16 string. - */ - int chars_parsed = sqlite3Utf8CharLen(zSql8, (int)(zTail8-zSql8)); - *pzTail = (u8 *)zSql + sqlite3Utf16ByteLen(zSql, chars_parsed); - } - sqlite3DbFree(db, zSql8); - rc = sqlite3ApiExit(db, rc); - sqlite3_mutex_leave(db->mutex); - return rc; -} - -/* -** Two versions of the official API. Legacy and new use. In the legacy -** version, the original SQL text is not saved in the prepared statement -** and so if a schema change occurs, SQLITE_SCHEMA is returned by -** sqlite3_step(). In the new version, the original SQL text is retained -** and the statement is automatically recompiled if an schema change -** occurs. -*/ -int sqlite3_prepare16( - sqlite3 *db, /* Database handle. */ - const void *zSql, /* UTF-16 encoded SQL statement. */ - int nBytes, /* Length of zSql in bytes. */ - sqlite3_stmt **ppStmt, /* OUT: A pointer to the prepared statement */ - const void **pzTail /* OUT: End of parsed string */ -){ - int rc; - rc = sqlite3Prepare16(db,zSql,nBytes,0,ppStmt,pzTail); - assert( rc==SQLITE_OK || ppStmt==0 || *ppStmt==0 ); /* VERIFY: F13021 */ - return rc; -} -int sqlite3_prepare16_v2( - sqlite3 *db, /* Database handle. */ - const void *zSql, /* UTF-16 encoded SQL statement. */ - int nBytes, /* Length of zSql in bytes. */ - sqlite3_stmt **ppStmt, /* OUT: A pointer to the prepared statement */ - const void **pzTail /* OUT: End of parsed string */ -){ - int rc; - rc = sqlite3Prepare16(db,zSql,nBytes,1,ppStmt,pzTail); - assert( rc==SQLITE_OK || ppStmt==0 || *ppStmt==0 ); /* VERIFY: F13021 */ - return rc; -} - -#endif /* SQLITE_OMIT_UTF16 */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/printf.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/printf.c deleted file mode 100644 index ca31c7e990..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/printf.c +++ /dev/null @@ -1,970 +0,0 @@ -/* -** The "printf" code that follows dates from the 1980's. It is in -** the public domain. The original comments are included here for -** completeness. They are very out-of-date but might be useful as -** an historical reference. Most of the "enhancements" have been backed -** out so that the functionality is now the same as standard printf(). -** -************************************************************************** -** -** This file contains code for a set of "printf"-like routines. These -** routines format strings much like the printf() from the standard C -** library, though the implementation here has enhancements to support -** SQLlite. -*/ -#include "sqliteInt.h" - -/* -** Conversion types fall into various categories as defined by the -** following enumeration. -*/ -#define etRADIX 1 /* Integer types. %d, %x, %o, and so forth */ -#define etFLOAT 2 /* Floating point. %f */ -#define etEXP 3 /* Exponentional notation. %e and %E */ -#define etGENERIC 4 /* Floating or exponential, depending on exponent. %g */ -#define etSIZE 5 /* Return number of characters processed so far. %n */ -#define etSTRING 6 /* Strings. %s */ -#define etDYNSTRING 7 /* Dynamically allocated strings. %z */ -#define etPERCENT 8 /* Percent symbol. %% */ -#define etCHARX 9 /* Characters. %c */ -/* The rest are extensions, not normally found in printf() */ -#define etSQLESCAPE 10 /* Strings with '\'' doubled. %q */ -#define etSQLESCAPE2 11 /* Strings with '\'' doubled and enclosed in '', - NULL pointers replaced by SQL NULL. %Q */ -#define etTOKEN 12 /* a pointer to a Token structure */ -#define etSRCLIST 13 /* a pointer to a SrcList */ -#define etPOINTER 14 /* The %p conversion */ -#define etSQLESCAPE3 15 /* %w -> Strings with '\"' doubled */ -#define etORDINAL 16 /* %r -> 1st, 2nd, 3rd, 4th, etc. English only */ - -#define etINVALID 0 /* Any unrecognized conversion type */ - - -/* -** An "etByte" is an 8-bit unsigned value. -*/ -typedef unsigned char etByte; - -/* -** Each builtin conversion character (ex: the 'd' in "%d") is described -** by an instance of the following structure -*/ -typedef struct et_info { /* Information about each format field */ - char fmttype; /* The format field code letter */ - etByte base; /* The base for radix conversion */ - etByte flags; /* One or more of FLAG_ constants below */ - etByte type; /* Conversion paradigm */ - etByte charset; /* Offset into aDigits[] of the digits string */ - etByte prefix; /* Offset into aPrefix[] of the prefix string */ -} et_info; - -/* -** Allowed values for et_info.flags -*/ -#define FLAG_SIGNED 1 /* True if the value to convert is signed */ -#define FLAG_INTERN 2 /* True if for internal use only */ -#define FLAG_STRING 4 /* Allow infinity precision */ - - -/* -** The following table is searched linearly, so it is good to put the -** most frequently used conversion types first. -*/ -static const char aDigits[] = "0123456789ABCDEF0123456789abcdef"; -static const char aPrefix[] = "-x0\000X0"; -static const et_info fmtinfo[] = { - { 'd', 10, 1, etRADIX, 0, 0 }, - { 's', 0, 4, etSTRING, 0, 0 }, - { 'g', 0, 1, etGENERIC, 30, 0 }, - { 'z', 0, 4, etDYNSTRING, 0, 0 }, - { 'q', 0, 4, etSQLESCAPE, 0, 0 }, - { 'Q', 0, 4, etSQLESCAPE2, 0, 0 }, - { 'w', 0, 4, etSQLESCAPE3, 0, 0 }, - { 'c', 0, 0, etCHARX, 0, 0 }, - { 'o', 8, 0, etRADIX, 0, 2 }, - { 'u', 10, 0, etRADIX, 0, 0 }, - { 'x', 16, 0, etRADIX, 16, 1 }, - { 'X', 16, 0, etRADIX, 0, 4 }, -#ifndef SQLITE_OMIT_FLOATING_POINT - { 'f', 0, 1, etFLOAT, 0, 0 }, - { 'e', 0, 1, etEXP, 30, 0 }, - { 'E', 0, 1, etEXP, 14, 0 }, - { 'G', 0, 1, etGENERIC, 14, 0 }, -#endif - { 'i', 10, 1, etRADIX, 0, 0 }, - { 'n', 0, 0, etSIZE, 0, 0 }, - { '%', 0, 0, etPERCENT, 0, 0 }, - { 'p', 16, 0, etPOINTER, 0, 1 }, - -/* All the rest have the FLAG_INTERN bit set and are thus for internal -** use only */ - { 'T', 0, 2, etTOKEN, 0, 0 }, - { 'S', 0, 2, etSRCLIST, 0, 0 }, - { 'r', 10, 3, etORDINAL, 0, 0 }, -}; - -/* -** If SQLITE_OMIT_FLOATING_POINT is defined, then none of the floating point -** conversions will work. -*/ -#ifndef SQLITE_OMIT_FLOATING_POINT -/* -** "*val" is a double such that 0.1 <= *val < 10.0 -** Return the ascii code for the leading digit of *val, then -** multiply "*val" by 10.0 to renormalize. -** -** Example: -** input: *val = 3.14159 -** output: *val = 1.4159 function return = '3' -** -** The counter *cnt is incremented each time. After counter exceeds -** 16 (the number of significant digits in a 64-bit float) '0' is -** always returned. -*/ -static char et_getdigit(LONGDOUBLE_TYPE *val, int *cnt){ - int digit; - LONGDOUBLE_TYPE d; - if( (*cnt)++ >= 16 ) return '0'; - digit = (int)*val; - d = digit; - digit += '0'; - *val = (*val - d)*10.0; - return (char)digit; -} -#endif /* SQLITE_OMIT_FLOATING_POINT */ - -/* -** Append N space characters to the given string buffer. -*/ -static void appendSpace(StrAccum *pAccum, int N){ - static const char zSpaces[] = " "; - while( N>=(int)sizeof(zSpaces)-1 ){ - sqlite3StrAccumAppend(pAccum, zSpaces, sizeof(zSpaces)-1); - N -= sizeof(zSpaces)-1; - } - if( N>0 ){ - sqlite3StrAccumAppend(pAccum, zSpaces, N); - } -} - -/* -** On machines with a small stack size, you can redefine the -** SQLITE_PRINT_BUF_SIZE to be something smaller, if desired. -*/ -#ifndef SQLITE_PRINT_BUF_SIZE -# define SQLITE_PRINT_BUF_SIZE 70 -#endif -#define etBUFSIZE SQLITE_PRINT_BUF_SIZE /* Size of the output buffer */ - -/* -** Render a string given by "fmt" into the StrAccum object. -*/ -void sqlite3VXPrintf( - StrAccum *pAccum, /* Accumulate results here */ - int useExtended, /* Allow extended %-conversions */ - const char *fmt, /* Format string */ - va_list ap /* arguments */ -){ - int c; /* Next character in the format string */ - char *bufpt; /* Pointer to the conversion buffer */ - int precision; /* Precision of the current field */ - int length; /* Length of the field */ - int idx; /* A general purpose loop counter */ - int width; /* Width of the current field */ - etByte flag_leftjustify; /* True if "-" flag is present */ - etByte flag_plussign; /* True if "+" flag is present */ - etByte flag_blanksign; /* True if " " flag is present */ - etByte flag_alternateform; /* True if "#" flag is present */ - etByte flag_altform2; /* True if "!" flag is present */ - etByte flag_zeropad; /* True if field width constant starts with zero */ - etByte flag_long; /* True if "l" flag is present */ - etByte flag_longlong; /* True if the "ll" flag is present */ - etByte done; /* Loop termination flag */ - etByte xtype = 0; /* Conversion paradigm */ - char prefix; /* Prefix character. "+" or "-" or " " or '\0'. */ - sqlite_uint64 longvalue; /* Value for integer types */ - LONGDOUBLE_TYPE realvalue; /* Value for real types */ - const et_info *infop; /* Pointer to the appropriate info structure */ - char *zOut; /* Rendering buffer */ - int nOut; /* Size of the rendering buffer */ - char *zExtra; /* Malloced memory used by some conversion */ -#ifndef SQLITE_OMIT_FLOATING_POINT - int exp, e2; /* exponent of real numbers */ - int nsd; /* Number of significant digits returned */ - double rounder; /* Used for rounding floating point values */ - etByte flag_dp; /* True if decimal point should be shown */ - etByte flag_rtz; /* True if trailing zeros should be removed */ -#endif - char buf[etBUFSIZE]; /* Conversion buffer */ - - bufpt = 0; - for(; (c=(*fmt))!=0; ++fmt){ - if( c!='%' ){ - int amt; - bufpt = (char *)fmt; - amt = 1; - while( (c=(*++fmt))!='%' && c!=0 ) amt++; - sqlite3StrAccumAppend(pAccum, bufpt, amt); - if( c==0 ) break; - } - if( (c=(*++fmt))==0 ){ - sqlite3StrAccumAppend(pAccum, "%", 1); - break; - } - /* Find out what flags are present */ - flag_leftjustify = flag_plussign = flag_blanksign = - flag_alternateform = flag_altform2 = flag_zeropad = 0; - done = 0; - do{ - switch( c ){ - case '-': flag_leftjustify = 1; break; - case '+': flag_plussign = 1; break; - case ' ': flag_blanksign = 1; break; - case '#': flag_alternateform = 1; break; - case '!': flag_altform2 = 1; break; - case '0': flag_zeropad = 1; break; - default: done = 1; break; - } - }while( !done && (c=(*++fmt))!=0 ); - /* Get the field width */ - width = 0; - if( c=='*' ){ - width = va_arg(ap,int); - if( width<0 ){ - flag_leftjustify = 1; - width = -width; - } - c = *++fmt; - }else{ - while( c>='0' && c<='9' ){ - width = width*10 + c - '0'; - c = *++fmt; - } - } - /* Get the precision */ - if( c=='.' ){ - precision = 0; - c = *++fmt; - if( c=='*' ){ - precision = va_arg(ap,int); - if( precision<0 ) precision = -precision; - c = *++fmt; - }else{ - while( c>='0' && c<='9' ){ - precision = precision*10 + c - '0'; - c = *++fmt; - } - } - }else{ - precision = -1; - } - /* Get the conversion type modifier */ - if( c=='l' ){ - flag_long = 1; - c = *++fmt; - if( c=='l' ){ - flag_longlong = 1; - c = *++fmt; - }else{ - flag_longlong = 0; - } - }else{ - flag_long = flag_longlong = 0; - } - /* Fetch the info entry for the field */ - infop = &fmtinfo[0]; - xtype = etINVALID; - for(idx=0; idxflags & FLAG_INTERN)==0 ){ - xtype = infop->type; - }else{ - return; - } - break; - } - } - zExtra = 0; - - /* - ** At this point, variables are initialized as follows: - ** - ** flag_alternateform TRUE if a '#' is present. - ** flag_altform2 TRUE if a '!' is present. - ** flag_plussign TRUE if a '+' is present. - ** flag_leftjustify TRUE if a '-' is present or if the - ** field width was negative. - ** flag_zeropad TRUE if the width began with 0. - ** flag_long TRUE if the letter 'l' (ell) prefixed - ** the conversion character. - ** flag_longlong TRUE if the letter 'll' (ell ell) prefixed - ** the conversion character. - ** flag_blanksign TRUE if a ' ' is present. - ** width The specified field width. This is - ** always non-negative. Zero is the default. - ** precision The specified precision. The default - ** is -1. - ** xtype The class of the conversion. - ** infop Pointer to the appropriate info struct. - */ - switch( xtype ){ - case etPOINTER: - flag_longlong = sizeof(char*)==sizeof(i64); - flag_long = sizeof(char*)==sizeof(long int); - /* Fall through into the next case */ - case etORDINAL: - case etRADIX: - if( infop->flags & FLAG_SIGNED ){ - i64 v; - if( flag_longlong ){ - v = va_arg(ap,i64); - }else if( flag_long ){ - v = va_arg(ap,long int); - }else{ - v = va_arg(ap,int); - } - if( v<0 ){ - if( v==SMALLEST_INT64 ){ - longvalue = ((u64)1)<<63; - }else{ - longvalue = -v; - } - prefix = '-'; - }else{ - longvalue = v; - if( flag_plussign ) prefix = '+'; - else if( flag_blanksign ) prefix = ' '; - else prefix = 0; - } - }else{ - if( flag_longlong ){ - longvalue = va_arg(ap,u64); - }else if( flag_long ){ - longvalue = va_arg(ap,unsigned long int); - }else{ - longvalue = va_arg(ap,unsigned int); - } - prefix = 0; - } - if( longvalue==0 ) flag_alternateform = 0; - if( flag_zeropad && precisionmallocFailed = 1; - return; - } - } - bufpt = &zOut[nOut-1]; - if( xtype==etORDINAL ){ - static const char zOrd[] = "thstndrd"; - int x = (int)(longvalue % 10); - if( x>=4 || (longvalue/10)%10==1 ){ - x = 0; - } - *(--bufpt) = zOrd[x*2+1]; - *(--bufpt) = zOrd[x*2]; - } - { - register const char *cset; /* Use registers for speed */ - register int base; - cset = &aDigits[infop->charset]; - base = infop->base; - do{ /* Convert to ascii */ - *(--bufpt) = cset[longvalue%base]; - longvalue = longvalue/base; - }while( longvalue>0 ); - } - length = (int)(&zOut[nOut-1]-bufpt); - for(idx=precision-length; idx>0; idx--){ - *(--bufpt) = '0'; /* Zero pad */ - } - if( prefix ) *(--bufpt) = prefix; /* Add sign */ - if( flag_alternateform && infop->prefix ){ /* Add "0" or "0x" */ - const char *pre; - char x; - pre = &aPrefix[infop->prefix]; - for(; (x=(*pre))!=0; pre++) *(--bufpt) = x; - } - length = (int)(&zOut[nOut-1]-bufpt); - break; - case etFLOAT: - case etEXP: - case etGENERIC: - realvalue = va_arg(ap,double); -#ifdef SQLITE_OMIT_FLOATING_POINT - length = 0; -#else - if( precision<0 ) precision = 6; /* Set default precision */ - if( realvalue<0.0 ){ - realvalue = -realvalue; - prefix = '-'; - }else{ - if( flag_plussign ) prefix = '+'; - else if( flag_blanksign ) prefix = ' '; - else prefix = 0; - } - if( xtype==etGENERIC && precision>0 ) precision--; -#if 0 - /* Rounding works like BSD when the constant 0.4999 is used. Wierd! */ - for(idx=precision, rounder=0.4999; idx>0; idx--, rounder*=0.1); -#else - /* It makes more sense to use 0.5 */ - for(idx=precision, rounder=0.5; idx>0; idx--, rounder*=0.1){} -#endif - if( xtype==etFLOAT ) realvalue += rounder; - /* Normalize realvalue to within 10.0 > realvalue >= 1.0 */ - exp = 0; - if( sqlite3IsNaN((double)realvalue) ){ - bufpt = "NaN"; - length = 3; - break; - } - if( realvalue>0.0 ){ - while( realvalue>=1e32 && exp<=350 ){ realvalue *= 1e-32; exp+=32; } - while( realvalue>=1e8 && exp<=350 ){ realvalue *= 1e-8; exp+=8; } - while( realvalue>=10.0 && exp<=350 ){ realvalue *= 0.1; exp++; } - while( realvalue<1e-8 ){ realvalue *= 1e8; exp-=8; } - while( realvalue<1.0 ){ realvalue *= 10.0; exp--; } - if( exp>350 ){ - if( prefix=='-' ){ - bufpt = "-Inf"; - }else if( prefix=='+' ){ - bufpt = "+Inf"; - }else{ - bufpt = "Inf"; - } - length = sqlite3Strlen30(bufpt); - break; - } - } - bufpt = buf; - /* - ** If the field type is etGENERIC, then convert to either etEXP - ** or etFLOAT, as appropriate. - */ - if( xtype!=etFLOAT ){ - realvalue += rounder; - if( realvalue>=10.0 ){ realvalue *= 0.1; exp++; } - } - if( xtype==etGENERIC ){ - flag_rtz = !flag_alternateform; - if( exp<-4 || exp>precision ){ - xtype = etEXP; - }else{ - precision = precision - exp; - xtype = etFLOAT; - } - }else{ - flag_rtz = 0; - } - if( xtype==etEXP ){ - e2 = 0; - }else{ - e2 = exp; - } - if( e2+precision+width > etBUFSIZE - 15 ){ - bufpt = zExtra = sqlite3Malloc( e2+precision+width+15 ); - if( bufpt==0 ){ - pAccum->mallocFailed = 1; - return; - } - } - zOut = bufpt; - nsd = 0; - flag_dp = (precision>0 ?1:0) | flag_alternateform | flag_altform2; - /* The sign in front of the number */ - if( prefix ){ - *(bufpt++) = prefix; - } - /* Digits prior to the decimal point */ - if( e2<0 ){ - *(bufpt++) = '0'; - }else{ - for(; e2>=0; e2--){ - *(bufpt++) = et_getdigit(&realvalue,&nsd); - } - } - /* The decimal point */ - if( flag_dp ){ - *(bufpt++) = '.'; - } - /* "0" digits after the decimal point but before the first - ** significant digit of the number */ - for(e2++; e2<0; precision--, e2++){ - assert( precision>0 ); - *(bufpt++) = '0'; - } - /* Significant digits after the decimal point */ - while( (precision--)>0 ){ - *(bufpt++) = et_getdigit(&realvalue,&nsd); - } - /* Remove trailing zeros and the "." if no digits follow the "." */ - if( flag_rtz && flag_dp ){ - while( bufpt[-1]=='0' ) *(--bufpt) = 0; - assert( bufpt>zOut ); - if( bufpt[-1]=='.' ){ - if( flag_altform2 ){ - *(bufpt++) = '0'; - }else{ - *(--bufpt) = 0; - } - } - } - /* Add the "eNNN" suffix */ - if( xtype==etEXP ){ - *(bufpt++) = aDigits[infop->charset]; - if( exp<0 ){ - *(bufpt++) = '-'; exp = -exp; - }else{ - *(bufpt++) = '+'; - } - if( exp>=100 ){ - *(bufpt++) = (char)((exp/100)+'0'); /* 100's digit */ - exp %= 100; - } - *(bufpt++) = (char)(exp/10+'0'); /* 10's digit */ - *(bufpt++) = (char)(exp%10+'0'); /* 1's digit */ - } - *bufpt = 0; - - /* The converted number is in buf[] and zero terminated. Output it. - ** Note that the number is in the usual order, not reversed as with - ** integer conversions. */ - length = (int)(bufpt-zOut); - bufpt = zOut; - - /* Special case: Add leading zeros if the flag_zeropad flag is - ** set and we are not left justified */ - if( flag_zeropad && !flag_leftjustify && length < width){ - int i; - int nPad = width - length; - for(i=width; i>=nPad; i--){ - bufpt[i] = bufpt[i-nPad]; - } - i = prefix!=0; - while( nPad-- ) bufpt[i++] = '0'; - length = width; - } -#endif /* !defined(SQLITE_OMIT_FLOATING_POINT) */ - break; - case etSIZE: - *(va_arg(ap,int*)) = pAccum->nChar; - length = width = 0; - break; - case etPERCENT: - buf[0] = '%'; - bufpt = buf; - length = 1; - break; - case etCHARX: - c = va_arg(ap,int); - buf[0] = (char)c; - if( precision>=0 ){ - for(idx=1; idx=0 ){ - for(length=0; lengthetBUFSIZE ){ - bufpt = zExtra = sqlite3Malloc( n ); - if( bufpt==0 ){ - pAccum->mallocFailed = 1; - return; - } - }else{ - bufpt = buf; - } - j = 0; - if( needQuote ) bufpt[j++] = q; - k = i; - for(i=0; i=0 && precisionz, pToken->n); - } - length = width = 0; - break; - } - case etSRCLIST: { - SrcList *pSrc = va_arg(ap, SrcList*); - int k = va_arg(ap, int); - struct SrcList_item *pItem = &pSrc->a[k]; - assert( k>=0 && knSrc ); - if( pItem->zDatabase ){ - sqlite3StrAccumAppend(pAccum, pItem->zDatabase, -1); - sqlite3StrAccumAppend(pAccum, ".", 1); - } - sqlite3StrAccumAppend(pAccum, pItem->zName, -1); - length = width = 0; - break; - } - default: { - assert( xtype==etINVALID ); - return; - } - }/* End switch over the format type */ - /* - ** The text of the conversion is pointed to by "bufpt" and is - ** "length" characters long. The field width is "width". Do - ** the output. - */ - if( !flag_leftjustify ){ - register int nspace; - nspace = width-length; - if( nspace>0 ){ - appendSpace(pAccum, nspace); - } - } - if( length>0 ){ - sqlite3StrAccumAppend(pAccum, bufpt, length); - } - if( flag_leftjustify ){ - register int nspace; - nspace = width-length; - if( nspace>0 ){ - appendSpace(pAccum, nspace); - } - } - sqlite3_free(zExtra); - }/* End for loop over the format string */ -} /* End of function */ - -/* -** Append N bytes of text from z to the StrAccum object. -*/ -void sqlite3StrAccumAppend(StrAccum *p, const char *z, int N){ - assert( z!=0 || N==0 ); - if( p->tooBig | p->mallocFailed ){ - testcase(p->tooBig); - testcase(p->mallocFailed); - return; - } - assert( p->zText!=0 || p->nChar==0 ); - if( N<0 ){ - N = sqlite3Strlen30(z); - } - if( N==0 || NEVER(z==0) ){ - return; - } - if( p->nChar+N >= p->nAlloc ){ - char *zNew; - if( !p->useMalloc ){ - p->tooBig = 1; - N = p->nAlloc - p->nChar - 1; - if( N<=0 ){ - return; - } - }else{ - char *zOld = (p->zText==p->zBase ? 0 : p->zText); - i64 szNew = p->nChar; - szNew += N + 1; - if( szNew > p->mxAlloc ){ - sqlite3StrAccumReset(p); - p->tooBig = 1; - return; - }else{ - p->nAlloc = (int)szNew; - } - if( p->useMalloc==1 ){ - zNew = sqlite3DbRealloc(p->db, zOld, p->nAlloc); - }else{ - zNew = sqlite3_realloc(zOld, p->nAlloc); - } - if( zNew ){ - if( zOld==0 && p->nChar>0 ) memcpy(zNew, p->zText, p->nChar); - p->zText = zNew; - }else{ - p->mallocFailed = 1; - sqlite3StrAccumReset(p); - return; - } - } - } - assert( p->zText ); - memcpy(&p->zText[p->nChar], z, N); - p->nChar += N; -} - -/* -** Finish off a string by making sure it is zero-terminated. -** Return a pointer to the resulting string. Return a NULL -** pointer if any kind of error was encountered. -*/ -char *sqlite3StrAccumFinish(StrAccum *p){ - if( p->zText ){ - p->zText[p->nChar] = 0; - if( p->useMalloc && p->zText==p->zBase ){ - if( p->useMalloc==1 ){ - p->zText = sqlite3DbMallocRaw(p->db, p->nChar+1 ); - }else{ - p->zText = sqlite3_malloc(p->nChar+1); - } - if( p->zText ){ - memcpy(p->zText, p->zBase, p->nChar+1); - }else{ - p->mallocFailed = 1; - } - } - } - return p->zText; -} - -/* -** Reset an StrAccum string. Reclaim all malloced memory. -*/ -void sqlite3StrAccumReset(StrAccum *p){ - if( p->zText!=p->zBase ){ - if( p->useMalloc==1 ){ - sqlite3DbFree(p->db, p->zText); - }else{ - sqlite3_free(p->zText); - } - } - p->zText = 0; -} - -/* -** Initialize a string accumulator -*/ -void sqlite3StrAccumInit(StrAccum *p, char *zBase, int n, int mx){ - p->zText = p->zBase = zBase; - p->db = 0; - p->nChar = 0; - p->nAlloc = n; - p->mxAlloc = mx; - p->useMalloc = 1; - p->tooBig = 0; - p->mallocFailed = 0; -} - -/* -** Print into memory obtained from sqliteMalloc(). Use the internal -** %-conversion extensions. -*/ -char *sqlite3VMPrintf(sqlite3 *db, const char *zFormat, va_list ap){ - char *z; - char zBase[SQLITE_PRINT_BUF_SIZE]; - StrAccum acc; - assert( db!=0 ); - sqlite3StrAccumInit(&acc, zBase, sizeof(zBase), - db->aLimit[SQLITE_LIMIT_LENGTH]); - acc.db = db; - sqlite3VXPrintf(&acc, 1, zFormat, ap); - z = sqlite3StrAccumFinish(&acc); - if( acc.mallocFailed ){ - db->mallocFailed = 1; - } - return z; -} - -/* -** Print into memory obtained from sqliteMalloc(). Use the internal -** %-conversion extensions. -*/ -char *sqlite3MPrintf(sqlite3 *db, const char *zFormat, ...){ - va_list ap; - char *z; - va_start(ap, zFormat); - z = sqlite3VMPrintf(db, zFormat, ap); - va_end(ap); - return z; -} - -/* -** Like sqlite3MPrintf(), but call sqlite3DbFree() on zStr after formatting -** the string and before returnning. This routine is intended to be used -** to modify an existing string. For example: -** -** x = sqlite3MPrintf(db, x, "prefix %s suffix", x); -** -*/ -char *sqlite3MAppendf(sqlite3 *db, char *zStr, const char *zFormat, ...){ - va_list ap; - char *z; - va_start(ap, zFormat); - z = sqlite3VMPrintf(db, zFormat, ap); - va_end(ap); - sqlite3DbFree(db, zStr); - return z; -} - -/* -** Print into memory obtained from sqlite3_malloc(). Omit the internal -** %-conversion extensions. -*/ -char *sqlite3_vmprintf(const char *zFormat, va_list ap){ - char *z; - char zBase[SQLITE_PRINT_BUF_SIZE]; - StrAccum acc; -#ifndef SQLITE_OMIT_AUTOINIT - if( sqlite3_initialize() ) return 0; -#endif - sqlite3StrAccumInit(&acc, zBase, sizeof(zBase), SQLITE_MAX_LENGTH); - acc.useMalloc = 2; - sqlite3VXPrintf(&acc, 0, zFormat, ap); - z = sqlite3StrAccumFinish(&acc); - return z; -} - -/* -** Print into memory obtained from sqlite3_malloc()(). Omit the internal -** %-conversion extensions. -*/ -char *sqlite3_mprintf(const char *zFormat, ...){ - va_list ap; - char *z; -#ifndef SQLITE_OMIT_AUTOINIT - if( sqlite3_initialize() ) return 0; -#endif - va_start(ap, zFormat); - z = sqlite3_vmprintf(zFormat, ap); - va_end(ap); - return z; -} - -/* -** sqlite3_snprintf() works like snprintf() except that it ignores the -** current locale settings. This is important for SQLite because we -** are not able to use a "," as the decimal point in place of "." as -** specified by some locales. -** -** Oops: The first two arguments of sqlite3_snprintf() are backwards -** from the snprintf() standard. Unfortunately, it is too late to change -** this without breaking compatibility, so we just have to live with the -** mistake. -** -** sqlite3_vsnprintf() is the varargs version. -*/ -char *sqlite3_vsnprintf(int n, char *zBuf, const char *zFormat, va_list ap){ - StrAccum acc; - if( n<=0 ) return zBuf; - sqlite3StrAccumInit(&acc, zBuf, n, 0); - acc.useMalloc = 0; - sqlite3VXPrintf(&acc, 0, zFormat, ap); - return sqlite3StrAccumFinish(&acc); -} -char *sqlite3_snprintf(int n, char *zBuf, const char *zFormat, ...){ - char *z; - va_list ap; - va_start(ap,zFormat); - z = sqlite3_vsnprintf(n, zBuf, zFormat, ap); - va_end(ap); - return z; -} - -/* -** This is the routine that actually formats the sqlite3_log() message. -** We house it in a separate routine from sqlite3_log() to avoid using -** stack space on small-stack systems when logging is disabled. -** -** sqlite3_log() must render into a static buffer. It cannot dynamically -** allocate memory because it might be called while the memory allocator -** mutex is held. -*/ -static void renderLogMsg(int iErrCode, const char *zFormat, va_list ap){ - StrAccum acc; /* String accumulator */ - char zMsg[SQLITE_PRINT_BUF_SIZE*3]; /* Complete log message */ - - sqlite3StrAccumInit(&acc, zMsg, sizeof(zMsg), 0); - acc.useMalloc = 0; - sqlite3VXPrintf(&acc, 0, zFormat, ap); - sqlite3GlobalConfig.xLog(sqlite3GlobalConfig.pLogArg, iErrCode, - sqlite3StrAccumFinish(&acc)); -} - -/* -** Format and write a message to the log if logging is enabled. -*/ -void sqlite3_log(int iErrCode, const char *zFormat, ...){ - va_list ap; /* Vararg list */ - if( sqlite3GlobalConfig.xLog ){ - va_start(ap, zFormat); - renderLogMsg(iErrCode, zFormat, ap); - va_end(ap); - } -} - -#if defined(SQLITE_DEBUG) -/* -** A version of printf() that understands %lld. Used for debugging. -** The printf() built into some versions of windows does not understand %lld -** and segfaults if you give it a long long int. -*/ -void sqlite3DebugPrintf(const char *zFormat, ...){ - va_list ap; - StrAccum acc; - char zBuf[500]; - sqlite3StrAccumInit(&acc, zBuf, sizeof(zBuf), 0); - acc.useMalloc = 0; - va_start(ap,zFormat); - sqlite3VXPrintf(&acc, 0, zFormat, ap); - va_end(ap); - sqlite3StrAccumFinish(&acc); - fprintf(stdout,"%s", zBuf); - fflush(stdout); -} -#endif - -#ifndef SQLITE_OMIT_TRACE -/* -** variable-argument wrapper around sqlite3VXPrintf(). -*/ -void sqlite3XPrintf(StrAccum *p, const char *zFormat, ...){ - va_list ap; - va_start(ap,zFormat); - sqlite3VXPrintf(p, 1, zFormat, ap); - va_end(ap); -} -#endif diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/random.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/random.c deleted file mode 100644 index 18ca7a2623..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/random.c +++ /dev/null @@ -1,145 +0,0 @@ -/* -** 2001 September 15 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file contains code to implement a pseudo-random number -** generator (PRNG) for SQLite. -** -** Random numbers are used by some of the database backends in order -** to generate random integer keys for tables or random filenames. -*/ -#include "sqliteInt.h" - - -/* All threads share a single random number generator. -** This structure is the current state of the generator. -*/ -static SQLITE_WSD struct sqlite3PrngType { - unsigned char isInit; /* True if initialized */ - unsigned char i, j; /* State variables */ - unsigned char s[256]; /* State variables */ -} sqlite3Prng; - -/* -** Get a single 8-bit random value from the RC4 PRNG. The Mutex -** must be held while executing this routine. -** -** Why not just use a library random generator like lrand48() for this? -** Because the OP_NewRowid opcode in the VDBE depends on having a very -** good source of random numbers. The lrand48() library function may -** well be good enough. But maybe not. Or maybe lrand48() has some -** subtle problems on some systems that could cause problems. It is hard -** to know. To minimize the risk of problems due to bad lrand48() -** implementations, SQLite uses this random number generator based -** on RC4, which we know works very well. -** -** (Later): Actually, OP_NewRowid does not depend on a good source of -** randomness any more. But we will leave this code in all the same. -*/ -static u8 randomByte(void){ - unsigned char t; - - - /* The "wsdPrng" macro will resolve to the pseudo-random number generator - ** state vector. If writable static data is unsupported on the target, - ** we have to locate the state vector at run-time. In the more common - ** case where writable static data is supported, wsdPrng can refer directly - ** to the "sqlite3Prng" state vector declared above. - */ -#ifdef SQLITE_OMIT_WSD - struct sqlite3PrngType *p = &GLOBAL(struct sqlite3PrngType, sqlite3Prng); -# define wsdPrng p[0] -#else -# define wsdPrng sqlite3Prng -#endif - - - /* Initialize the state of the random number generator once, - ** the first time this routine is called. The seed value does - ** not need to contain a lot of randomness since we are not - ** trying to do secure encryption or anything like that... - ** - ** Nothing in this file or anywhere else in SQLite does any kind of - ** encryption. The RC4 algorithm is being used as a PRNG (pseudo-random - ** number generator) not as an encryption device. - */ - if( !wsdPrng.isInit ){ - int i; - char k[256]; - wsdPrng.j = 0; - wsdPrng.i = 0; - sqlite3OsRandomness(sqlite3_vfs_find(0), 256, k); - for(i=0; i<256; i++){ - wsdPrng.s[i] = (u8)i; - } - for(i=0; i<256; i++){ - wsdPrng.j += wsdPrng.s[i] + k[i]; - t = wsdPrng.s[wsdPrng.j]; - wsdPrng.s[wsdPrng.j] = wsdPrng.s[i]; - wsdPrng.s[i] = t; - } - wsdPrng.isInit = 1; - } - - /* Generate and return single random byte - */ - wsdPrng.i++; - t = wsdPrng.s[wsdPrng.i]; - wsdPrng.j += t; - wsdPrng.s[wsdPrng.i] = wsdPrng.s[wsdPrng.j]; - wsdPrng.s[wsdPrng.j] = t; - t += wsdPrng.s[wsdPrng.i]; - return wsdPrng.s[t]; -} - -/* -** Return N random bytes. -*/ -void sqlite3_randomness(int N, void *pBuf){ - unsigned char *zBuf = pBuf; -#if SQLITE_THREADSAFE - sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_PRNG); -#endif - sqlite3_mutex_enter(mutex); - while( N-- ){ - *(zBuf++) = randomByte(); - } - sqlite3_mutex_leave(mutex); -} - -#ifndef SQLITE_OMIT_BUILTIN_TEST -/* -** For testing purposes, we sometimes want to preserve the state of -** PRNG and restore the PRNG to its saved state at a later time, or -** to reset the PRNG to its initial state. These routines accomplish -** those tasks. -** -** The sqlite3_test_control() interface calls these routines to -** control the PRNG. -*/ -static SQLITE_WSD struct sqlite3PrngType sqlite3SavedPrng; -void sqlite3PrngSaveState(void){ - memcpy( - &GLOBAL(struct sqlite3PrngType, sqlite3SavedPrng), - &GLOBAL(struct sqlite3PrngType, sqlite3Prng), - sizeof(sqlite3Prng) - ); -} -void sqlite3PrngRestoreState(void){ - memcpy( - &GLOBAL(struct sqlite3PrngType, sqlite3Prng), - &GLOBAL(struct sqlite3PrngType, sqlite3SavedPrng), - sizeof(sqlite3Prng) - ); -} -void sqlite3PrngResetState(void){ - GLOBAL(struct sqlite3PrngType, sqlite3Prng).isInit = 0; -} -#endif /* SQLITE_OMIT_BUILTIN_TEST */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/resolve.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/resolve.c deleted file mode 100644 index 8919e58420..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/resolve.c +++ /dev/null @@ -1,1223 +0,0 @@ -/* -** 2008 August 18 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** -** This file contains routines used for walking the parser tree and -** resolve all identifiers by associating them with a particular -** table and column. -*/ -#include "sqliteInt.h" -#include -#include - -/* -** Turn the pExpr expression into an alias for the iCol-th column of the -** result set in pEList. -** -** If the result set column is a simple column reference, then this routine -** makes an exact copy. But for any other kind of expression, this -** routine make a copy of the result set column as the argument to the -** TK_AS operator. The TK_AS operator causes the expression to be -** evaluated just once and then reused for each alias. -** -** The reason for suppressing the TK_AS term when the expression is a simple -** column reference is so that the column reference will be recognized as -** usable by indices within the WHERE clause processing logic. -** -** Hack: The TK_AS operator is inhibited if zType[0]=='G'. This means -** that in a GROUP BY clause, the expression is evaluated twice. Hence: -** -** SELECT random()%5 AS x, count(*) FROM tab GROUP BY x -** -** Is equivalent to: -** -** SELECT random()%5 AS x, count(*) FROM tab GROUP BY random()%5 -** -** The result of random()%5 in the GROUP BY clause is probably different -** from the result in the result-set. We might fix this someday. Or -** then again, we might not... -*/ -static void resolveAlias( - Parse *pParse, /* Parsing context */ - ExprList *pEList, /* A result set */ - int iCol, /* A column in the result set. 0..pEList->nExpr-1 */ - Expr *pExpr, /* Transform this into an alias to the result set */ - const char *zType /* "GROUP" or "ORDER" or "" */ -){ - Expr *pOrig; /* The iCol-th column of the result set */ - Expr *pDup; /* Copy of pOrig */ - sqlite3 *db; /* The database connection */ - - assert( iCol>=0 && iColnExpr ); - pOrig = pEList->a[iCol].pExpr; - assert( pOrig!=0 ); - assert( pOrig->flags & EP_Resolved ); - db = pParse->db; - if( pOrig->op!=TK_COLUMN && zType[0]!='G' ){ - pDup = sqlite3ExprDup(db, pOrig, 0); - pDup = sqlite3PExpr(pParse, TK_AS, pDup, 0, 0); - if( pDup==0 ) return; - if( pEList->a[iCol].iAlias==0 ){ - pEList->a[iCol].iAlias = (u16)(++pParse->nAlias); - } - pDup->iTable = pEList->a[iCol].iAlias; - }else if( ExprHasProperty(pOrig, EP_IntValue) || pOrig->u.zToken==0 ){ - pDup = sqlite3ExprDup(db, pOrig, 0); - if( pDup==0 ) return; - }else{ - char *zToken = pOrig->u.zToken; - assert( zToken!=0 ); - pOrig->u.zToken = 0; - pDup = sqlite3ExprDup(db, pOrig, 0); - pOrig->u.zToken = zToken; - if( pDup==0 ) return; - assert( (pDup->flags & (EP_Reduced|EP_TokenOnly))==0 ); - pDup->flags2 |= EP2_MallocedToken; - pDup->u.zToken = sqlite3DbStrDup(db, zToken); - } - if( pExpr->flags & EP_ExpCollate ){ - pDup->pColl = pExpr->pColl; - pDup->flags |= EP_ExpCollate; - } - - /* Before calling sqlite3ExprDelete(), set the EP_Static flag. This - ** prevents ExprDelete() from deleting the Expr structure itself, - ** allowing it to be repopulated by the memcpy() on the following line. - */ - ExprSetProperty(pExpr, EP_Static); - sqlite3ExprDelete(db, pExpr); - memcpy(pExpr, pDup, sizeof(*pExpr)); - sqlite3DbFree(db, pDup); -} - - -/* -** Return TRUE if the name zCol occurs anywhere in the USING clause. -** -** Return FALSE if the USING clause is NULL or if it does not contain -** zCol. -*/ -static int nameInUsingClause(IdList *pUsing, const char *zCol){ - if( pUsing ){ - int k; - for(k=0; knId; k++){ - if( sqlite3StrICmp(pUsing->a[k].zName, zCol)==0 ) return 1; - } - } - return 0; -} - - -/* -** Given the name of a column of the form X.Y.Z or Y.Z or just Z, look up -** that name in the set of source tables in pSrcList and make the pExpr -** expression node refer back to that source column. The following changes -** are made to pExpr: -** -** pExpr->iDb Set the index in db->aDb[] of the database X -** (even if X is implied). -** pExpr->iTable Set to the cursor number for the table obtained -** from pSrcList. -** pExpr->pTab Points to the Table structure of X.Y (even if -** X and/or Y are implied.) -** pExpr->iColumn Set to the column number within the table. -** pExpr->op Set to TK_COLUMN. -** pExpr->pLeft Any expression this points to is deleted -** pExpr->pRight Any expression this points to is deleted. -** -** The zDb variable is the name of the database (the "X"). This value may be -** NULL meaning that name is of the form Y.Z or Z. Any available database -** can be used. The zTable variable is the name of the table (the "Y"). This -** value can be NULL if zDb is also NULL. If zTable is NULL it -** means that the form of the name is Z and that columns from any table -** can be used. -** -** If the name cannot be resolved unambiguously, leave an error message -** in pParse and return WRC_Abort. Return WRC_Prune on success. -*/ -static int lookupName( - Parse *pParse, /* The parsing context */ - const char *zDb, /* Name of the database containing table, or NULL */ - const char *zTab, /* Name of table containing column, or NULL */ - const char *zCol, /* Name of the column. */ - NameContext *pNC, /* The name context used to resolve the name */ - Expr *pExpr /* Make this EXPR node point to the selected column */ -){ - int i, j; /* Loop counters */ - int cnt = 0; /* Number of matching column names */ - int cntTab = 0; /* Number of matching table names */ - sqlite3 *db = pParse->db; /* The database connection */ - struct SrcList_item *pItem; /* Use for looping over pSrcList items */ - struct SrcList_item *pMatch = 0; /* The matching pSrcList item */ - NameContext *pTopNC = pNC; /* First namecontext in the list */ - Schema *pSchema = 0; /* Schema of the expression */ - int isTrigger = 0; - - assert( pNC ); /* the name context cannot be NULL. */ - assert( zCol ); /* The Z in X.Y.Z cannot be NULL */ - assert( ~ExprHasAnyProperty(pExpr, EP_TokenOnly|EP_Reduced) ); - - /* Initialize the node to no-match */ - pExpr->iTable = -1; - pExpr->pTab = 0; - ExprSetIrreducible(pExpr); - - /* Start at the inner-most context and move outward until a match is found */ - while( pNC && cnt==0 ){ - ExprList *pEList; - SrcList *pSrcList = pNC->pSrcList; - - if( pSrcList ){ - for(i=0, pItem=pSrcList->a; inSrc; i++, pItem++){ - Table *pTab; - int iDb; - Column *pCol; - - pTab = pItem->pTab; - assert( pTab!=0 && pTab->zName!=0 ); - iDb = sqlite3SchemaToIndex(db, pTab->pSchema); - assert( pTab->nCol>0 ); - if( zTab ){ - if( pItem->zAlias ){ - char *zTabName = pItem->zAlias; - if( sqlite3StrICmp(zTabName, zTab)!=0 ) continue; - }else{ - char *zTabName = pTab->zName; - if( NEVER(zTabName==0) || sqlite3StrICmp(zTabName, zTab)!=0 ){ - continue; - } - if( zDb!=0 && sqlite3StrICmp(db->aDb[iDb].zName, zDb)!=0 ){ - continue; - } - } - } - if( 0==(cntTab++) ){ - pExpr->iTable = pItem->iCursor; - pExpr->pTab = pTab; - pSchema = pTab->pSchema; - pMatch = pItem; - } - for(j=0, pCol=pTab->aCol; jnCol; j++, pCol++){ - if( sqlite3StrICmp(pCol->zName, zCol)==0 ){ - /* If there has been exactly one prior match and this match - ** is for the right-hand table of a NATURAL JOIN or is in a - ** USING clause, then skip this match. - */ - if( cnt==1 ){ - if( pItem->jointype & JT_NATURAL ) continue; - if( nameInUsingClause(pItem->pUsing, zCol) ) continue; - } - cnt++; - pExpr->iTable = pItem->iCursor; - pExpr->pTab = pTab; - pMatch = pItem; - pSchema = pTab->pSchema; - /* Substitute the rowid (column -1) for the INTEGER PRIMARY KEY */ - pExpr->iColumn = j==pTab->iPKey ? -1 : (i16)j; - break; - } - } - } - } - -#ifndef SQLITE_OMIT_TRIGGER - /* If we have not already resolved the name, then maybe - ** it is a new.* or old.* trigger argument reference - */ - if( zDb==0 && zTab!=0 && cnt==0 && pParse->pTriggerTab!=0 ){ - int op = pParse->eTriggerOp; - Table *pTab = 0; - assert( op==TK_DELETE || op==TK_UPDATE || op==TK_INSERT ); - if( op!=TK_DELETE && sqlite3StrICmp("new",zTab) == 0 ){ - pExpr->iTable = 1; - pTab = pParse->pTriggerTab; - }else if( op!=TK_INSERT && sqlite3StrICmp("old",zTab)==0 ){ - pExpr->iTable = 0; - pTab = pParse->pTriggerTab; - } - - if( pTab ){ - int iCol; - pSchema = pTab->pSchema; - cntTab++; - for(iCol=0; iColnCol; iCol++){ - Column *pCol = &pTab->aCol[iCol]; - if( sqlite3StrICmp(pCol->zName, zCol)==0 ){ - if( iCol==pTab->iPKey ){ - iCol = -1; - } - break; - } - } - if( iCol>=pTab->nCol && sqlite3IsRowid(zCol) ){ - iCol = -1; /* IMP: R-44911-55124 */ - } - if( iColnCol ){ - cnt++; - if( iCol<0 ){ - pExpr->affinity = SQLITE_AFF_INTEGER; - }else if( pExpr->iTable==0 ){ - testcase( iCol==31 ); - testcase( iCol==32 ); - pParse->oldmask |= (iCol>=32 ? 0xffffffff : (((u32)1)<newmask |= (iCol>=32 ? 0xffffffff : (((u32)1)<iColumn = (i16)iCol; - pExpr->pTab = pTab; - isTrigger = 1; - } - } - } -#endif /* !defined(SQLITE_OMIT_TRIGGER) */ - - /* - ** Perhaps the name is a reference to the ROWID - */ - if( cnt==0 && cntTab==1 && sqlite3IsRowid(zCol) ){ - cnt = 1; - pExpr->iColumn = -1; /* IMP: R-44911-55124 */ - pExpr->affinity = SQLITE_AFF_INTEGER; - } - - /* - ** If the input is of the form Z (not Y.Z or X.Y.Z) then the name Z - ** might refer to an result-set alias. This happens, for example, when - ** we are resolving names in the WHERE clause of the following command: - ** - ** SELECT a+b AS x FROM table WHERE x<10; - ** - ** In cases like this, replace pExpr with a copy of the expression that - ** forms the result set entry ("a+b" in the example) and return immediately. - ** Note that the expression in the result set should have already been - ** resolved by the time the WHERE clause is resolved. - */ - if( cnt==0 && (pEList = pNC->pEList)!=0 && zTab==0 ){ - for(j=0; jnExpr; j++){ - char *zAs = pEList->a[j].zName; - if( zAs!=0 && sqlite3StrICmp(zAs, zCol)==0 ){ - Expr *pOrig; - assert( pExpr->pLeft==0 && pExpr->pRight==0 ); - assert( pExpr->x.pList==0 ); - assert( pExpr->x.pSelect==0 ); - pOrig = pEList->a[j].pExpr; - if( !pNC->allowAgg && ExprHasProperty(pOrig, EP_Agg) ){ - sqlite3ErrorMsg(pParse, "misuse of aliased aggregate %s", zAs); - return WRC_Abort; - } - resolveAlias(pParse, pEList, j, pExpr, ""); - cnt = 1; - pMatch = 0; - assert( zTab==0 && zDb==0 ); - goto lookupname_end; - } - } - } - - /* Advance to the next name context. The loop will exit when either - ** we have a match (cnt>0) or when we run out of name contexts. - */ - if( cnt==0 ){ - pNC = pNC->pNext; - } - } - - /* - ** If X and Y are NULL (in other words if only the column name Z is - ** supplied) and the value of Z is enclosed in double-quotes, then - ** Z is a string literal if it doesn't match any column names. In that - ** case, we need to return right away and not make any changes to - ** pExpr. - ** - ** Because no reference was made to outer contexts, the pNC->nRef - ** fields are not changed in any context. - */ - if( cnt==0 && zTab==0 && ExprHasProperty(pExpr,EP_DblQuoted) ){ - pExpr->op = TK_STRING; - pExpr->pTab = 0; - return WRC_Prune; - } - - /* - ** cnt==0 means there was not match. cnt>1 means there were two or - ** more matches. Either way, we have an error. - */ - if( cnt!=1 ){ - const char *zErr; - zErr = cnt==0 ? "no such column" : "ambiguous column name"; - if( zDb ){ - sqlite3ErrorMsg(pParse, "%s: %s.%s.%s", zErr, zDb, zTab, zCol); - }else if( zTab ){ - sqlite3ErrorMsg(pParse, "%s: %s.%s", zErr, zTab, zCol); - }else{ - sqlite3ErrorMsg(pParse, "%s: %s", zErr, zCol); - } - pParse->checkSchema = 1; - pTopNC->nErr++; - } - - /* If a column from a table in pSrcList is referenced, then record - ** this fact in the pSrcList.a[].colUsed bitmask. Column 0 causes - ** bit 0 to be set. Column 1 sets bit 1. And so forth. If the - ** column number is greater than the number of bits in the bitmask - ** then set the high-order bit of the bitmask. - */ - if( pExpr->iColumn>=0 && pMatch!=0 ){ - int n = pExpr->iColumn; - testcase( n==BMS-1 ); - if( n>=BMS ){ - n = BMS-1; - } - assert( pMatch->iCursor==pExpr->iTable ); - pMatch->colUsed |= ((Bitmask)1)<pLeft); - pExpr->pLeft = 0; - sqlite3ExprDelete(db, pExpr->pRight); - pExpr->pRight = 0; - pExpr->op = (isTrigger ? TK_TRIGGER : TK_COLUMN); -lookupname_end: - if( cnt==1 ){ - assert( pNC!=0 ); - sqlite3AuthRead(pParse, pExpr, pSchema, pNC->pSrcList); - /* Increment the nRef value on all name contexts from TopNC up to - ** the point where the name matched. */ - for(;;){ - assert( pTopNC!=0 ); - pTopNC->nRef++; - if( pTopNC==pNC ) break; - pTopNC = pTopNC->pNext; - } - return WRC_Prune; - } else { - return WRC_Abort; - } -} - -/* -** Allocate and return a pointer to an expression to load the column iCol -** from datasource iSrc in SrcList pSrc. -*/ -Expr *sqlite3CreateColumnExpr(sqlite3 *db, SrcList *pSrc, int iSrc, int iCol){ - Expr *p = sqlite3ExprAlloc(db, TK_COLUMN, 0, 0); - if( p ){ - struct SrcList_item *pItem = &pSrc->a[iSrc]; - p->pTab = pItem->pTab; - p->iTable = pItem->iCursor; - if( p->pTab->iPKey==iCol ){ - p->iColumn = -1; - }else{ - p->iColumn = (ynVar)iCol; - testcase( iCol==BMS ); - testcase( iCol==BMS-1 ); - pItem->colUsed |= ((Bitmask)1)<<(iCol>=BMS ? BMS-1 : iCol); - } - ExprSetProperty(p, EP_Resolved); - } - return p; -} - -/* -** This routine is callback for sqlite3WalkExpr(). -** -** Resolve symbolic names into TK_COLUMN operators for the current -** node in the expression tree. Return 0 to continue the search down -** the tree or 2 to abort the tree walk. -** -** This routine also does error checking and name resolution for -** function names. The operator for aggregate functions is changed -** to TK_AGG_FUNCTION. -*/ -static int resolveExprStep(Walker *pWalker, Expr *pExpr){ - NameContext *pNC; - Parse *pParse; - - pNC = pWalker->u.pNC; - assert( pNC!=0 ); - pParse = pNC->pParse; - assert( pParse==pWalker->pParse ); - - if( ExprHasAnyProperty(pExpr, EP_Resolved) ) return WRC_Prune; - ExprSetProperty(pExpr, EP_Resolved); -#ifndef NDEBUG - if( pNC->pSrcList && pNC->pSrcList->nAlloc>0 ){ - SrcList *pSrcList = pNC->pSrcList; - int i; - for(i=0; ipSrcList->nSrc; i++){ - assert( pSrcList->a[i].iCursor>=0 && pSrcList->a[i].iCursornTab); - } - } -#endif - switch( pExpr->op ){ - -#if defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) && !defined(SQLITE_OMIT_SUBQUERY) - /* The special operator TK_ROW means use the rowid for the first - ** column in the FROM clause. This is used by the LIMIT and ORDER BY - ** clause processing on UPDATE and DELETE statements. - */ - case TK_ROW: { - SrcList *pSrcList = pNC->pSrcList; - struct SrcList_item *pItem; - assert( pSrcList && pSrcList->nSrc==1 ); - pItem = pSrcList->a; - pExpr->op = TK_COLUMN; - pExpr->pTab = pItem->pTab; - pExpr->iTable = pItem->iCursor; - pExpr->iColumn = -1; - pExpr->affinity = SQLITE_AFF_INTEGER; - break; - } -#endif /* defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) && !defined(SQLITE_OMIT_SUBQUERY) */ - - /* A lone identifier is the name of a column. - */ - case TK_ID: { - return lookupName(pParse, 0, 0, pExpr->u.zToken, pNC, pExpr); - } - - /* A table name and column name: ID.ID - ** Or a database, table and column: ID.ID.ID - */ - case TK_DOT: { - const char *zColumn; - const char *zTable; - const char *zDb; - Expr *pRight; - - /* if( pSrcList==0 ) break; */ - pRight = pExpr->pRight; - if( pRight->op==TK_ID ){ - zDb = 0; - zTable = pExpr->pLeft->u.zToken; - zColumn = pRight->u.zToken; - }else{ - assert( pRight->op==TK_DOT ); - zDb = pExpr->pLeft->u.zToken; - zTable = pRight->pLeft->u.zToken; - zColumn = pRight->pRight->u.zToken; - } - return lookupName(pParse, zDb, zTable, zColumn, pNC, pExpr); - } - - /* Resolve function names - */ - case TK_CONST_FUNC: - case TK_FUNCTION: { - ExprList *pList = pExpr->x.pList; /* The argument list */ - int n = pList ? pList->nExpr : 0; /* Number of arguments */ - int no_such_func = 0; /* True if no such function exists */ - int wrong_num_args = 0; /* True if wrong number of arguments */ - int is_agg = 0; /* True if is an aggregate function */ - int auth; /* Authorization to use the function */ - int nId; /* Number of characters in function name */ - const char *zId; /* The function name. */ - FuncDef *pDef; /* Information about the function */ - u8 enc = ENC(pParse->db); /* The database encoding */ - - testcase( pExpr->op==TK_CONST_FUNC ); - assert( !ExprHasProperty(pExpr, EP_xIsSelect) ); - zId = pExpr->u.zToken; - nId = sqlite3Strlen30(zId); - pDef = sqlite3FindFunction(pParse->db, zId, nId, n, enc, 0); - if( pDef==0 ){ - pDef = sqlite3FindFunction(pParse->db, zId, nId, -1, enc, 0); - if( pDef==0 ){ - no_such_func = 1; - }else{ - wrong_num_args = 1; - } - }else{ - is_agg = pDef->xFunc==0; - } -#ifndef SQLITE_OMIT_AUTHORIZATION - if( pDef ){ - auth = sqlite3AuthCheck(pParse, SQLITE_FUNCTION, 0, pDef->zName, 0); - if( auth!=SQLITE_OK ){ - if( auth==SQLITE_DENY ){ - sqlite3ErrorMsg(pParse, "not authorized to use function: %s", - pDef->zName); - pNC->nErr++; - } - pExpr->op = TK_NULL; - return WRC_Prune; - } - } -#endif - if( is_agg && !pNC->allowAgg ){ - sqlite3ErrorMsg(pParse, "misuse of aggregate function %.*s()", nId,zId); - pNC->nErr++; - is_agg = 0; - }else if( no_such_func ){ - sqlite3ErrorMsg(pParse, "no such function: %.*s", nId, zId); - pNC->nErr++; - }else if( wrong_num_args ){ - sqlite3ErrorMsg(pParse,"wrong number of arguments to function %.*s()", - nId, zId); - pNC->nErr++; - } - if( is_agg ){ - pExpr->op = TK_AGG_FUNCTION; - pNC->hasAgg = 1; - } - if( is_agg ) pNC->allowAgg = 0; - sqlite3WalkExprList(pWalker, pList); - if( is_agg ) pNC->allowAgg = 1; - /* FIX ME: Compute pExpr->affinity based on the expected return - ** type of the function - */ - return WRC_Prune; - } -#ifndef SQLITE_OMIT_SUBQUERY - case TK_SELECT: - case TK_EXISTS: testcase( pExpr->op==TK_EXISTS ); -#endif - case TK_IN: { - testcase( pExpr->op==TK_IN ); - if( ExprHasProperty(pExpr, EP_xIsSelect) ){ - int nRef = pNC->nRef; -#ifndef SQLITE_OMIT_CHECK - if( pNC->isCheck ){ - sqlite3ErrorMsg(pParse,"subqueries prohibited in CHECK constraints"); - } -#endif - sqlite3WalkSelect(pWalker, pExpr->x.pSelect); - assert( pNC->nRef>=nRef ); - if( nRef!=pNC->nRef ){ - ExprSetProperty(pExpr, EP_VarSelect); - } - } - break; - } -#ifndef SQLITE_OMIT_CHECK - case TK_VARIABLE: { - if( pNC->isCheck ){ - sqlite3ErrorMsg(pParse,"parameters prohibited in CHECK constraints"); - } - break; - } -#endif - } - return (pParse->nErr || pParse->db->mallocFailed) ? WRC_Abort : WRC_Continue; -} - -/* -** pEList is a list of expressions which are really the result set of the -** a SELECT statement. pE is a term in an ORDER BY or GROUP BY clause. -** This routine checks to see if pE is a simple identifier which corresponds -** to the AS-name of one of the terms of the expression list. If it is, -** this routine return an integer between 1 and N where N is the number of -** elements in pEList, corresponding to the matching entry. If there is -** no match, or if pE is not a simple identifier, then this routine -** return 0. -** -** pEList has been resolved. pE has not. -*/ -static int resolveAsName( - Parse *pParse, /* Parsing context for error messages */ - ExprList *pEList, /* List of expressions to scan */ - Expr *pE /* Expression we are trying to match */ -){ - int i; /* Loop counter */ - - UNUSED_PARAMETER(pParse); - - if( pE->op==TK_ID ){ - char *zCol = pE->u.zToken; - for(i=0; inExpr; i++){ - char *zAs = pEList->a[i].zName; - if( zAs!=0 && sqlite3StrICmp(zAs, zCol)==0 ){ - return i+1; - } - } - } - return 0; -} - -/* -** pE is a pointer to an expression which is a single term in the -** ORDER BY of a compound SELECT. The expression has not been -** name resolved. -** -** At the point this routine is called, we already know that the -** ORDER BY term is not an integer index into the result set. That -** case is handled by the calling routine. -** -** Attempt to match pE against result set columns in the left-most -** SELECT statement. Return the index i of the matching column, -** as an indication to the caller that it should sort by the i-th column. -** The left-most column is 1. In other words, the value returned is the -** same integer value that would be used in the SQL statement to indicate -** the column. -** -** If there is no match, return 0. Return -1 if an error occurs. -*/ -static int resolveOrderByTermToExprList( - Parse *pParse, /* Parsing context for error messages */ - Select *pSelect, /* The SELECT statement with the ORDER BY clause */ - Expr *pE /* The specific ORDER BY term */ -){ - int i; /* Loop counter */ - ExprList *pEList; /* The columns of the result set */ - NameContext nc; /* Name context for resolving pE */ - sqlite3 *db; /* Database connection */ - int rc; /* Return code from subprocedures */ - u8 savedSuppErr; /* Saved value of db->suppressErr */ - - assert( sqlite3ExprIsInteger(pE, &i)==0 ); - pEList = pSelect->pEList; - - /* Resolve all names in the ORDER BY term expression - */ - memset(&nc, 0, sizeof(nc)); - nc.pParse = pParse; - nc.pSrcList = pSelect->pSrc; - nc.pEList = pEList; - nc.allowAgg = 1; - nc.nErr = 0; - db = pParse->db; - savedSuppErr = db->suppressErr; - db->suppressErr = 1; - rc = sqlite3ResolveExprNames(&nc, pE); - db->suppressErr = savedSuppErr; - if( rc ) return 0; - - /* Try to match the ORDER BY expression against an expression - ** in the result set. Return an 1-based index of the matching - ** result-set entry. - */ - for(i=0; inExpr; i++){ - if( sqlite3ExprCompare(pEList->a[i].pExpr, pE)<2 ){ - return i+1; - } - } - - /* If no match, return 0. */ - return 0; -} - -/* -** Generate an ORDER BY or GROUP BY term out-of-range error. -*/ -static void resolveOutOfRangeError( - Parse *pParse, /* The error context into which to write the error */ - const char *zType, /* "ORDER" or "GROUP" */ - int i, /* The index (1-based) of the term out of range */ - int mx /* Largest permissible value of i */ -){ - sqlite3ErrorMsg(pParse, - "%r %s BY term out of range - should be " - "between 1 and %d", i, zType, mx); -} - -/* -** Analyze the ORDER BY clause in a compound SELECT statement. Modify -** each term of the ORDER BY clause is a constant integer between 1 -** and N where N is the number of columns in the compound SELECT. -** -** ORDER BY terms that are already an integer between 1 and N are -** unmodified. ORDER BY terms that are integers outside the range of -** 1 through N generate an error. ORDER BY terms that are expressions -** are matched against result set expressions of compound SELECT -** beginning with the left-most SELECT and working toward the right. -** At the first match, the ORDER BY expression is transformed into -** the integer column number. -** -** Return the number of errors seen. -*/ -static int resolveCompoundOrderBy( - Parse *pParse, /* Parsing context. Leave error messages here */ - Select *pSelect /* The SELECT statement containing the ORDER BY */ -){ - int i; - ExprList *pOrderBy; - ExprList *pEList; - sqlite3 *db; - int moreToDo = 1; - - pOrderBy = pSelect->pOrderBy; - if( pOrderBy==0 ) return 0; - db = pParse->db; -#if SQLITE_MAX_COLUMN - if( pOrderBy->nExpr>db->aLimit[SQLITE_LIMIT_COLUMN] ){ - sqlite3ErrorMsg(pParse, "too many terms in ORDER BY clause"); - return 1; - } -#endif - for(i=0; inExpr; i++){ - pOrderBy->a[i].done = 0; - } - pSelect->pNext = 0; - while( pSelect->pPrior ){ - pSelect->pPrior->pNext = pSelect; - pSelect = pSelect->pPrior; - } - while( pSelect && moreToDo ){ - struct ExprList_item *pItem; - moreToDo = 0; - pEList = pSelect->pEList; - assert( pEList!=0 ); - for(i=0, pItem=pOrderBy->a; inExpr; i++, pItem++){ - int iCol = -1; - Expr *pE, *pDup; - if( pItem->done ) continue; - pE = pItem->pExpr; - if( sqlite3ExprIsInteger(pE, &iCol) ){ - if( iCol<=0 || iCol>pEList->nExpr ){ - resolveOutOfRangeError(pParse, "ORDER", i+1, pEList->nExpr); - return 1; - } - }else{ - iCol = resolveAsName(pParse, pEList, pE); - if( iCol==0 ){ - pDup = sqlite3ExprDup(db, pE, 0); - if( !db->mallocFailed ){ - assert(pDup); - iCol = resolveOrderByTermToExprList(pParse, pSelect, pDup); - } - sqlite3ExprDelete(db, pDup); - } - } - if( iCol>0 ){ - CollSeq *pColl = pE->pColl; - int flags = pE->flags & EP_ExpCollate; - sqlite3ExprDelete(db, pE); - pItem->pExpr = pE = sqlite3Expr(db, TK_INTEGER, 0); - if( pE==0 ) return 1; - pE->pColl = pColl; - pE->flags |= EP_IntValue | flags; - pE->u.iValue = iCol; - pItem->iCol = (u16)iCol; - pItem->done = 1; - }else{ - moreToDo = 1; - } - } - pSelect = pSelect->pNext; - } - for(i=0; inExpr; i++){ - if( pOrderBy->a[i].done==0 ){ - sqlite3ErrorMsg(pParse, "%r ORDER BY term does not match any " - "column in the result set", i+1); - return 1; - } - } - return 0; -} - -/* -** Check every term in the ORDER BY or GROUP BY clause pOrderBy of -** the SELECT statement pSelect. If any term is reference to a -** result set expression (as determined by the ExprList.a.iCol field) -** then convert that term into a copy of the corresponding result set -** column. -** -** If any errors are detected, add an error message to pParse and -** return non-zero. Return zero if no errors are seen. -*/ -int sqlite3ResolveOrderGroupBy( - Parse *pParse, /* Parsing context. Leave error messages here */ - Select *pSelect, /* The SELECT statement containing the clause */ - ExprList *pOrderBy, /* The ORDER BY or GROUP BY clause to be processed */ - const char *zType /* "ORDER" or "GROUP" */ -){ - int i; - sqlite3 *db = pParse->db; - ExprList *pEList; - struct ExprList_item *pItem; - - if( pOrderBy==0 || pParse->db->mallocFailed ) return 0; -#if SQLITE_MAX_COLUMN - if( pOrderBy->nExpr>db->aLimit[SQLITE_LIMIT_COLUMN] ){ - sqlite3ErrorMsg(pParse, "too many terms in %s BY clause", zType); - return 1; - } -#endif - pEList = pSelect->pEList; - assert( pEList!=0 ); /* sqlite3SelectNew() guarantees this */ - for(i=0, pItem=pOrderBy->a; inExpr; i++, pItem++){ - if( pItem->iCol ){ - if( pItem->iCol>pEList->nExpr ){ - resolveOutOfRangeError(pParse, zType, i+1, pEList->nExpr); - return 1; - } - resolveAlias(pParse, pEList, pItem->iCol-1, pItem->pExpr, zType); - } - } - return 0; -} - -/* -** pOrderBy is an ORDER BY or GROUP BY clause in SELECT statement pSelect. -** The Name context of the SELECT statement is pNC. zType is either -** "ORDER" or "GROUP" depending on which type of clause pOrderBy is. -** -** This routine resolves each term of the clause into an expression. -** If the order-by term is an integer I between 1 and N (where N is the -** number of columns in the result set of the SELECT) then the expression -** in the resolution is a copy of the I-th result-set expression. If -** the order-by term is an identify that corresponds to the AS-name of -** a result-set expression, then the term resolves to a copy of the -** result-set expression. Otherwise, the expression is resolved in -** the usual way - using sqlite3ResolveExprNames(). -** -** This routine returns the number of errors. If errors occur, then -** an appropriate error message might be left in pParse. (OOM errors -** excepted.) -*/ -static int resolveOrderGroupBy( - NameContext *pNC, /* The name context of the SELECT statement */ - Select *pSelect, /* The SELECT statement holding pOrderBy */ - ExprList *pOrderBy, /* An ORDER BY or GROUP BY clause to resolve */ - const char *zType /* Either "ORDER" or "GROUP", as appropriate */ -){ - int i; /* Loop counter */ - int iCol; /* Column number */ - struct ExprList_item *pItem; /* A term of the ORDER BY clause */ - Parse *pParse; /* Parsing context */ - int nResult; /* Number of terms in the result set */ - - if( pOrderBy==0 ) return 0; - nResult = pSelect->pEList->nExpr; - pParse = pNC->pParse; - for(i=0, pItem=pOrderBy->a; inExpr; i++, pItem++){ - Expr *pE = pItem->pExpr; - iCol = resolveAsName(pParse, pSelect->pEList, pE); - if( iCol>0 ){ - /* If an AS-name match is found, mark this ORDER BY column as being - ** a copy of the iCol-th result-set column. The subsequent call to - ** sqlite3ResolveOrderGroupBy() will convert the expression to a - ** copy of the iCol-th result-set expression. */ - pItem->iCol = (u16)iCol; - continue; - } - if( sqlite3ExprIsInteger(pE, &iCol) ){ - /* The ORDER BY term is an integer constant. Again, set the column - ** number so that sqlite3ResolveOrderGroupBy() will convert the - ** order-by term to a copy of the result-set expression */ - if( iCol<1 ){ - resolveOutOfRangeError(pParse, zType, i+1, nResult); - return 1; - } - pItem->iCol = (u16)iCol; - continue; - } - - /* Otherwise, treat the ORDER BY term as an ordinary expression */ - pItem->iCol = 0; - if( sqlite3ResolveExprNames(pNC, pE) ){ - return 1; - } - } - return sqlite3ResolveOrderGroupBy(pParse, pSelect, pOrderBy, zType); -} - -/* -** Resolve names in the SELECT statement p and all of its descendents. -*/ -static int resolveSelectStep(Walker *pWalker, Select *p){ - NameContext *pOuterNC; /* Context that contains this SELECT */ - NameContext sNC; /* Name context of this SELECT */ - int isCompound; /* True if p is a compound select */ - int nCompound; /* Number of compound terms processed so far */ - Parse *pParse; /* Parsing context */ - ExprList *pEList; /* Result set expression list */ - int i; /* Loop counter */ - ExprList *pGroupBy; /* The GROUP BY clause */ - Select *pLeftmost; /* Left-most of SELECT of a compound */ - sqlite3 *db; /* Database connection */ - - - assert( p!=0 ); - if( p->selFlags & SF_Resolved ){ - return WRC_Prune; - } - pOuterNC = pWalker->u.pNC; - pParse = pWalker->pParse; - db = pParse->db; - - /* Normally sqlite3SelectExpand() will be called first and will have - ** already expanded this SELECT. However, if this is a subquery within - ** an expression, sqlite3ResolveExprNames() will be called without a - ** prior call to sqlite3SelectExpand(). When that happens, let - ** sqlite3SelectPrep() do all of the processing for this SELECT. - ** sqlite3SelectPrep() will invoke both sqlite3SelectExpand() and - ** this routine in the correct order. - */ - if( (p->selFlags & SF_Expanded)==0 ){ - sqlite3SelectPrep(pParse, p, pOuterNC); - return (pParse->nErr || db->mallocFailed) ? WRC_Abort : WRC_Prune; - } - - isCompound = p->pPrior!=0; - nCompound = 0; - pLeftmost = p; - while( p ){ - assert( (p->selFlags & SF_Expanded)!=0 ); - assert( (p->selFlags & SF_Resolved)==0 ); - p->selFlags |= SF_Resolved; - - /* Resolve the expressions in the LIMIT and OFFSET clauses. These - ** are not allowed to refer to any names, so pass an empty NameContext. - */ - memset(&sNC, 0, sizeof(sNC)); - sNC.pParse = pParse; - if( sqlite3ResolveExprNames(&sNC, p->pLimit) || - sqlite3ResolveExprNames(&sNC, p->pOffset) ){ - return WRC_Abort; - } - - /* Set up the local name-context to pass to sqlite3ResolveExprNames() to - ** resolve the result-set expression list. - */ - sNC.allowAgg = 1; - sNC.pSrcList = p->pSrc; - sNC.pNext = pOuterNC; - - /* Resolve names in the result set. */ - pEList = p->pEList; - assert( pEList!=0 ); - for(i=0; inExpr; i++){ - Expr *pX = pEList->a[i].pExpr; - if( sqlite3ResolveExprNames(&sNC, pX) ){ - return WRC_Abort; - } - } - - /* Recursively resolve names in all subqueries - */ - for(i=0; ipSrc->nSrc; i++){ - struct SrcList_item *pItem = &p->pSrc->a[i]; - if( pItem->pSelect ){ - NameContext *pNC; /* Used to iterate name contexts */ - int nRef = 0; /* Refcount for pOuterNC and outer contexts */ - const char *zSavedContext = pParse->zAuthContext; - - /* Count the total number of references to pOuterNC and all of its - ** parent contexts. After resolving references to expressions in - ** pItem->pSelect, check if this value has changed. If so, then - ** SELECT statement pItem->pSelect must be correlated. Set the - ** pItem->isCorrelated flag if this is the case. */ - for(pNC=pOuterNC; pNC; pNC=pNC->pNext) nRef += pNC->nRef; - - if( pItem->zName ) pParse->zAuthContext = pItem->zName; - sqlite3ResolveSelectNames(pParse, pItem->pSelect, pOuterNC); - pParse->zAuthContext = zSavedContext; - if( pParse->nErr || db->mallocFailed ) return WRC_Abort; - - for(pNC=pOuterNC; pNC; pNC=pNC->pNext) nRef -= pNC->nRef; - assert( pItem->isCorrelated==0 && nRef<=0 ); - pItem->isCorrelated = (nRef!=0); - } - } - - /* If there are no aggregate functions in the result-set, and no GROUP BY - ** expression, do not allow aggregates in any of the other expressions. - */ - assert( (p->selFlags & SF_Aggregate)==0 ); - pGroupBy = p->pGroupBy; - if( pGroupBy || sNC.hasAgg ){ - p->selFlags |= SF_Aggregate; - }else{ - sNC.allowAgg = 0; - } - - /* If a HAVING clause is present, then there must be a GROUP BY clause. - */ - if( p->pHaving && !pGroupBy ){ - sqlite3ErrorMsg(pParse, "a GROUP BY clause is required before HAVING"); - return WRC_Abort; - } - - /* Add the expression list to the name-context before parsing the - ** other expressions in the SELECT statement. This is so that - ** expressions in the WHERE clause (etc.) can refer to expressions by - ** aliases in the result set. - ** - ** Minor point: If this is the case, then the expression will be - ** re-evaluated for each reference to it. - */ - sNC.pEList = p->pEList; - if( sqlite3ResolveExprNames(&sNC, p->pWhere) || - sqlite3ResolveExprNames(&sNC, p->pHaving) - ){ - return WRC_Abort; - } - - /* The ORDER BY and GROUP BY clauses may not refer to terms in - ** outer queries - */ - sNC.pNext = 0; - sNC.allowAgg = 1; - - /* Process the ORDER BY clause for singleton SELECT statements. - ** The ORDER BY clause for compounds SELECT statements is handled - ** below, after all of the result-sets for all of the elements of - ** the compound have been resolved. - */ - if( !isCompound && resolveOrderGroupBy(&sNC, p, p->pOrderBy, "ORDER") ){ - return WRC_Abort; - } - if( db->mallocFailed ){ - return WRC_Abort; - } - - /* Resolve the GROUP BY clause. At the same time, make sure - ** the GROUP BY clause does not contain aggregate functions. - */ - if( pGroupBy ){ - struct ExprList_item *pItem; - - if( resolveOrderGroupBy(&sNC, p, pGroupBy, "GROUP") || db->mallocFailed ){ - return WRC_Abort; - } - for(i=0, pItem=pGroupBy->a; inExpr; i++, pItem++){ - if( ExprHasProperty(pItem->pExpr, EP_Agg) ){ - sqlite3ErrorMsg(pParse, "aggregate functions are not allowed in " - "the GROUP BY clause"); - return WRC_Abort; - } - } - } - - /* Advance to the next term of the compound - */ - p = p->pPrior; - nCompound++; - } - - /* Resolve the ORDER BY on a compound SELECT after all terms of - ** the compound have been resolved. - */ - if( isCompound && resolveCompoundOrderBy(pParse, pLeftmost) ){ - return WRC_Abort; - } - - return WRC_Prune; -} - -/* -** This routine walks an expression tree and resolves references to -** table columns and result-set columns. At the same time, do error -** checking on function usage and set a flag if any aggregate functions -** are seen. -** -** To resolve table columns references we look for nodes (or subtrees) of the -** form X.Y.Z or Y.Z or just Z where -** -** X: The name of a database. Ex: "main" or "temp" or -** the symbolic name assigned to an ATTACH-ed database. -** -** Y: The name of a table in a FROM clause. Or in a trigger -** one of the special names "old" or "new". -** -** Z: The name of a column in table Y. -** -** The node at the root of the subtree is modified as follows: -** -** Expr.op Changed to TK_COLUMN -** Expr.pTab Points to the Table object for X.Y -** Expr.iColumn The column index in X.Y. -1 for the rowid. -** Expr.iTable The VDBE cursor number for X.Y -** -** -** To resolve result-set references, look for expression nodes of the -** form Z (with no X and Y prefix) where the Z matches the right-hand -** size of an AS clause in the result-set of a SELECT. The Z expression -** is replaced by a copy of the left-hand side of the result-set expression. -** Table-name and function resolution occurs on the substituted expression -** tree. For example, in: -** -** SELECT a+b AS x, c+d AS y FROM t1 ORDER BY x; -** -** The "x" term of the order by is replaced by "a+b" to render: -** -** SELECT a+b AS x, c+d AS y FROM t1 ORDER BY a+b; -** -** Function calls are checked to make sure that the function is -** defined and that the correct number of arguments are specified. -** If the function is an aggregate function, then the pNC->hasAgg is -** set and the opcode is changed from TK_FUNCTION to TK_AGG_FUNCTION. -** If an expression contains aggregate functions then the EP_Agg -** property on the expression is set. -** -** An error message is left in pParse if anything is amiss. The number -** if errors is returned. -*/ -int sqlite3ResolveExprNames( - NameContext *pNC, /* Namespace to resolve expressions in. */ - Expr *pExpr /* The expression to be analyzed. */ -){ - int savedHasAgg; - Walker w; - - if( pExpr==0 ) return 0; -#if SQLITE_MAX_EXPR_DEPTH>0 - { - Parse *pParse = pNC->pParse; - if( sqlite3ExprCheckHeight(pParse, pExpr->nHeight+pNC->pParse->nHeight) ){ - return 1; - } - pParse->nHeight += pExpr->nHeight; - } -#endif - savedHasAgg = pNC->hasAgg; - pNC->hasAgg = 0; - w.xExprCallback = resolveExprStep; - w.xSelectCallback = resolveSelectStep; - w.pParse = pNC->pParse; - w.u.pNC = pNC; - sqlite3WalkExpr(&w, pExpr); -#if SQLITE_MAX_EXPR_DEPTH>0 - pNC->pParse->nHeight -= pExpr->nHeight; -#endif - if( pNC->nErr>0 || w.pParse->nErr>0 ){ - ExprSetProperty(pExpr, EP_Error); - } - if( pNC->hasAgg ){ - ExprSetProperty(pExpr, EP_Agg); - }else if( savedHasAgg ){ - pNC->hasAgg = 1; - } - return ExprHasProperty(pExpr, EP_Error); -} - - -/* -** Resolve all names in all expressions of a SELECT and in all -** decendents of the SELECT, including compounds off of p->pPrior, -** subqueries in expressions, and subqueries used as FROM clause -** terms. -** -** See sqlite3ResolveExprNames() for a description of the kinds of -** transformations that occur. -** -** All SELECT statements should have been expanded using -** sqlite3SelectExpand() prior to invoking this routine. -*/ -void sqlite3ResolveSelectNames( - Parse *pParse, /* The parser context */ - Select *p, /* The SELECT statement being coded. */ - NameContext *pOuterNC /* Name context for parent SELECT statement */ -){ - Walker w; - - assert( p!=0 ); - w.xExprCallback = resolveExprStep; - w.xSelectCallback = resolveSelectStep; - w.pParse = pParse; - w.u.pNC = pOuterNC; - sqlite3WalkSelect(&w, p); -} diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/rowset.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/rowset.c deleted file mode 100644 index 0a5b5aff2a..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/rowset.c +++ /dev/null @@ -1,422 +0,0 @@ -/* -** 2008 December 3 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** -** This module implements an object we call a "RowSet". -** -** The RowSet object is a collection of rowids. Rowids -** are inserted into the RowSet in an arbitrary order. Inserts -** can be intermixed with tests to see if a given rowid has been -** previously inserted into the RowSet. -** -** After all inserts are finished, it is possible to extract the -** elements of the RowSet in sorted order. Once this extraction -** process has started, no new elements may be inserted. -** -** Hence, the primitive operations for a RowSet are: -** -** CREATE -** INSERT -** TEST -** SMALLEST -** DESTROY -** -** The CREATE and DESTROY primitives are the constructor and destructor, -** obviously. The INSERT primitive adds a new element to the RowSet. -** TEST checks to see if an element is already in the RowSet. SMALLEST -** extracts the least value from the RowSet. -** -** The INSERT primitive might allocate additional memory. Memory is -** allocated in chunks so most INSERTs do no allocation. There is an -** upper bound on the size of allocated memory. No memory is freed -** until DESTROY. -** -** The TEST primitive includes a "batch" number. The TEST primitive -** will only see elements that were inserted before the last change -** in the batch number. In other words, if an INSERT occurs between -** two TESTs where the TESTs have the same batch nubmer, then the -** value added by the INSERT will not be visible to the second TEST. -** The initial batch number is zero, so if the very first TEST contains -** a non-zero batch number, it will see all prior INSERTs. -** -** No INSERTs may occurs after a SMALLEST. An assertion will fail if -** that is attempted. -** -** The cost of an INSERT is roughly constant. (Sometime new memory -** has to be allocated on an INSERT.) The cost of a TEST with a new -** batch number is O(NlogN) where N is the number of elements in the RowSet. -** The cost of a TEST using the same batch number is O(logN). The cost -** of the first SMALLEST is O(NlogN). Second and subsequent SMALLEST -** primitives are constant time. The cost of DESTROY is O(N). -** -** There is an added cost of O(N) when switching between TEST and -** SMALLEST primitives. -*/ -#include "sqliteInt.h" - - -/* -** Target size for allocation chunks. -*/ -#define ROWSET_ALLOCATION_SIZE 1024 - -/* -** The number of rowset entries per allocation chunk. -*/ -#define ROWSET_ENTRY_PER_CHUNK \ - ((ROWSET_ALLOCATION_SIZE-8)/sizeof(struct RowSetEntry)) - -/* -** Each entry in a RowSet is an instance of the following object. -*/ -struct RowSetEntry { - i64 v; /* ROWID value for this entry */ - struct RowSetEntry *pRight; /* Right subtree (larger entries) or list */ - struct RowSetEntry *pLeft; /* Left subtree (smaller entries) */ -}; - -/* -** RowSetEntry objects are allocated in large chunks (instances of the -** following structure) to reduce memory allocation overhead. The -** chunks are kept on a linked list so that they can be deallocated -** when the RowSet is destroyed. -*/ -struct RowSetChunk { - struct RowSetChunk *pNextChunk; /* Next chunk on list of them all */ - struct RowSetEntry aEntry[ROWSET_ENTRY_PER_CHUNK]; /* Allocated entries */ -}; - -/* -** A RowSet in an instance of the following structure. -** -** A typedef of this structure if found in sqliteInt.h. -*/ -struct RowSet { - struct RowSetChunk *pChunk; /* List of all chunk allocations */ - sqlite3 *db; /* The database connection */ - struct RowSetEntry *pEntry; /* List of entries using pRight */ - struct RowSetEntry *pLast; /* Last entry on the pEntry list */ - struct RowSetEntry *pFresh; /* Source of new entry objects */ - struct RowSetEntry *pTree; /* Binary tree of entries */ - u16 nFresh; /* Number of objects on pFresh */ - u8 isSorted; /* True if pEntry is sorted */ - u8 iBatch; /* Current insert batch */ -}; - -/* -** Turn bulk memory into a RowSet object. N bytes of memory -** are available at pSpace. The db pointer is used as a memory context -** for any subsequent allocations that need to occur. -** Return a pointer to the new RowSet object. -** -** It must be the case that N is sufficient to make a Rowset. If not -** an assertion fault occurs. -** -** If N is larger than the minimum, use the surplus as an initial -** allocation of entries available to be filled. -*/ -RowSet *sqlite3RowSetInit(sqlite3 *db, void *pSpace, unsigned int N){ - RowSet *p; - assert( N >= ROUND8(sizeof(*p)) ); - p = pSpace; - p->pChunk = 0; - p->db = db; - p->pEntry = 0; - p->pLast = 0; - p->pTree = 0; - p->pFresh = (struct RowSetEntry*)(ROUND8(sizeof(*p)) + (char*)p); - p->nFresh = (u16)((N - ROUND8(sizeof(*p)))/sizeof(struct RowSetEntry)); - p->isSorted = 1; - p->iBatch = 0; - return p; -} - -/* -** Deallocate all chunks from a RowSet. This frees all memory that -** the RowSet has allocated over its lifetime. This routine is -** the destructor for the RowSet. -*/ -void sqlite3RowSetClear(RowSet *p){ - struct RowSetChunk *pChunk, *pNextChunk; - for(pChunk=p->pChunk; pChunk; pChunk = pNextChunk){ - pNextChunk = pChunk->pNextChunk; - sqlite3DbFree(p->db, pChunk); - } - p->pChunk = 0; - p->nFresh = 0; - p->pEntry = 0; - p->pLast = 0; - p->pTree = 0; - p->isSorted = 1; -} - -/* -** Insert a new value into a RowSet. -** -** The mallocFailed flag of the database connection is set if a -** memory allocation fails. -*/ -void sqlite3RowSetInsert(RowSet *p, i64 rowid){ - struct RowSetEntry *pEntry; /* The new entry */ - struct RowSetEntry *pLast; /* The last prior entry */ - assert( p!=0 ); - if( p->nFresh==0 ){ - struct RowSetChunk *pNew; - pNew = sqlite3DbMallocRaw(p->db, sizeof(*pNew)); - if( pNew==0 ){ - return; - } - pNew->pNextChunk = p->pChunk; - p->pChunk = pNew; - p->pFresh = pNew->aEntry; - p->nFresh = ROWSET_ENTRY_PER_CHUNK; - } - pEntry = p->pFresh++; - p->nFresh--; - pEntry->v = rowid; - pEntry->pRight = 0; - pLast = p->pLast; - if( pLast ){ - if( p->isSorted && rowid<=pLast->v ){ - p->isSorted = 0; - } - pLast->pRight = pEntry; - }else{ - assert( p->pEntry==0 ); /* Fires if INSERT after SMALLEST */ - p->pEntry = pEntry; - } - p->pLast = pEntry; -} - -/* -** Merge two lists of RowSetEntry objects. Remove duplicates. -** -** The input lists are connected via pRight pointers and are -** assumed to each already be in sorted order. -*/ -static struct RowSetEntry *rowSetMerge( - struct RowSetEntry *pA, /* First sorted list to be merged */ - struct RowSetEntry *pB /* Second sorted list to be merged */ -){ - struct RowSetEntry head; - struct RowSetEntry *pTail; - - pTail = &head; - while( pA && pB ){ - assert( pA->pRight==0 || pA->v<=pA->pRight->v ); - assert( pB->pRight==0 || pB->v<=pB->pRight->v ); - if( pA->vv ){ - pTail->pRight = pA; - pA = pA->pRight; - pTail = pTail->pRight; - }else if( pB->vv ){ - pTail->pRight = pB; - pB = pB->pRight; - pTail = pTail->pRight; - }else{ - pA = pA->pRight; - } - } - if( pA ){ - assert( pA->pRight==0 || pA->v<=pA->pRight->v ); - pTail->pRight = pA; - }else{ - assert( pB==0 || pB->pRight==0 || pB->v<=pB->pRight->v ); - pTail->pRight = pB; - } - return head.pRight; -} - -/* -** Sort all elements on the pEntry list of the RowSet into ascending order. -*/ -static void rowSetSort(RowSet *p){ - unsigned int i; - struct RowSetEntry *pEntry; - struct RowSetEntry *aBucket[40]; - - assert( p->isSorted==0 ); - memset(aBucket, 0, sizeof(aBucket)); - while( p->pEntry ){ - pEntry = p->pEntry; - p->pEntry = pEntry->pRight; - pEntry->pRight = 0; - for(i=0; aBucket[i]; i++){ - pEntry = rowSetMerge(aBucket[i], pEntry); - aBucket[i] = 0; - } - aBucket[i] = pEntry; - } - pEntry = 0; - for(i=0; ipEntry = pEntry; - p->pLast = 0; - p->isSorted = 1; -} - - -/* -** The input, pIn, is a binary tree (or subtree) of RowSetEntry objects. -** Convert this tree into a linked list connected by the pRight pointers -** and return pointers to the first and last elements of the new list. -*/ -static void rowSetTreeToList( - struct RowSetEntry *pIn, /* Root of the input tree */ - struct RowSetEntry **ppFirst, /* Write head of the output list here */ - struct RowSetEntry **ppLast /* Write tail of the output list here */ -){ - assert( pIn!=0 ); - if( pIn->pLeft ){ - struct RowSetEntry *p; - rowSetTreeToList(pIn->pLeft, ppFirst, &p); - p->pRight = pIn; - }else{ - *ppFirst = pIn; - } - if( pIn->pRight ){ - rowSetTreeToList(pIn->pRight, &pIn->pRight, ppLast); - }else{ - *ppLast = pIn; - } - assert( (*ppLast)->pRight==0 ); -} - - -/* -** Convert a sorted list of elements (connected by pRight) into a binary -** tree with depth of iDepth. A depth of 1 means the tree contains a single -** node taken from the head of *ppList. A depth of 2 means a tree with -** three nodes. And so forth. -** -** Use as many entries from the input list as required and update the -** *ppList to point to the unused elements of the list. If the input -** list contains too few elements, then construct an incomplete tree -** and leave *ppList set to NULL. -** -** Return a pointer to the root of the constructed binary tree. -*/ -static struct RowSetEntry *rowSetNDeepTree( - struct RowSetEntry **ppList, - int iDepth -){ - struct RowSetEntry *p; /* Root of the new tree */ - struct RowSetEntry *pLeft; /* Left subtree */ - if( *ppList==0 ){ - return 0; - } - if( iDepth==1 ){ - p = *ppList; - *ppList = p->pRight; - p->pLeft = p->pRight = 0; - return p; - } - pLeft = rowSetNDeepTree(ppList, iDepth-1); - p = *ppList; - if( p==0 ){ - return pLeft; - } - p->pLeft = pLeft; - *ppList = p->pRight; - p->pRight = rowSetNDeepTree(ppList, iDepth-1); - return p; -} - -/* -** Convert a sorted list of elements into a binary tree. Make the tree -** as deep as it needs to be in order to contain the entire list. -*/ -static struct RowSetEntry *rowSetListToTree(struct RowSetEntry *pList){ - int iDepth; /* Depth of the tree so far */ - struct RowSetEntry *p; /* Current tree root */ - struct RowSetEntry *pLeft; /* Left subtree */ - - assert( pList!=0 ); - p = pList; - pList = p->pRight; - p->pLeft = p->pRight = 0; - for(iDepth=1; pList; iDepth++){ - pLeft = p; - p = pList; - pList = p->pRight; - p->pLeft = pLeft; - p->pRight = rowSetNDeepTree(&pList, iDepth); - } - return p; -} - -/* -** Convert the list in p->pEntry into a sorted list if it is not -** sorted already. If there is a binary tree on p->pTree, then -** convert it into a list too and merge it into the p->pEntry list. -*/ -static void rowSetToList(RowSet *p){ - if( !p->isSorted ){ - rowSetSort(p); - } - if( p->pTree ){ - struct RowSetEntry *pHead, *pTail; - rowSetTreeToList(p->pTree, &pHead, &pTail); - p->pTree = 0; - p->pEntry = rowSetMerge(p->pEntry, pHead); - } -} - -/* -** Extract the smallest element from the RowSet. -** Write the element into *pRowid. Return 1 on success. Return -** 0 if the RowSet is already empty. -** -** After this routine has been called, the sqlite3RowSetInsert() -** routine may not be called again. -*/ -int sqlite3RowSetNext(RowSet *p, i64 *pRowid){ - rowSetToList(p); - if( p->pEntry ){ - *pRowid = p->pEntry->v; - p->pEntry = p->pEntry->pRight; - if( p->pEntry==0 ){ - sqlite3RowSetClear(p); - } - return 1; - }else{ - return 0; - } -} - -/* -** Check to see if element iRowid was inserted into the the rowset as -** part of any insert batch prior to iBatch. Return 1 or 0. -*/ -int sqlite3RowSetTest(RowSet *pRowSet, u8 iBatch, sqlite3_int64 iRowid){ - struct RowSetEntry *p; - if( iBatch!=pRowSet->iBatch ){ - if( pRowSet->pEntry ){ - rowSetToList(pRowSet); - pRowSet->pTree = rowSetListToTree(pRowSet->pEntry); - pRowSet->pEntry = 0; - pRowSet->pLast = 0; - } - pRowSet->iBatch = iBatch; - } - p = pRowSet->pTree; - while( p ){ - if( p->vpRight; - }else if( p->v>iRowid ){ - p = p->pLeft; - }else{ - return 1; - } - } - return 0; -} diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/select.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/select.c deleted file mode 100644 index 6663b733cb..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/select.c +++ /dev/null @@ -1,4591 +0,0 @@ -/* -** 2001 September 15 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file contains C code routines that are called by the parser -** to handle SELECT statements in SQLite. -*/ -#include "sqliteInt.h" - - -/* -** Delete all the content of a Select structure but do not deallocate -** the select structure itself. -*/ -static void clearSelect(sqlite3 *db, Select *p){ - sqlite3ExprListDelete(db, p->pEList); - sqlite3SrcListDelete(db, p->pSrc); - sqlite3ExprDelete(db, p->pWhere); - sqlite3ExprListDelete(db, p->pGroupBy); - sqlite3ExprDelete(db, p->pHaving); - sqlite3ExprListDelete(db, p->pOrderBy); - sqlite3SelectDelete(db, p->pPrior); - sqlite3ExprDelete(db, p->pLimit); - sqlite3ExprDelete(db, p->pOffset); -} - -/* -** Initialize a SelectDest structure. -*/ -void sqlite3SelectDestInit(SelectDest *pDest, int eDest, int iParm){ - pDest->eDest = (u8)eDest; - pDest->iParm = iParm; - pDest->affinity = 0; - pDest->iMem = 0; - pDest->nMem = 0; -} - - -/* -** Allocate a new Select structure and return a pointer to that -** structure. -*/ -Select *sqlite3SelectNew( - Parse *pParse, /* Parsing context */ - ExprList *pEList, /* which columns to include in the result */ - SrcList *pSrc, /* the FROM clause -- which tables to scan */ - Expr *pWhere, /* the WHERE clause */ - ExprList *pGroupBy, /* the GROUP BY clause */ - Expr *pHaving, /* the HAVING clause */ - ExprList *pOrderBy, /* the ORDER BY clause */ - int isDistinct, /* true if the DISTINCT keyword is present */ - Expr *pLimit, /* LIMIT value. NULL means not used */ - Expr *pOffset /* OFFSET value. NULL means no offset */ -){ - Select *pNew; - Select standin; - sqlite3 *db = pParse->db; - pNew = sqlite3DbMallocZero(db, sizeof(*pNew) ); - assert( db->mallocFailed || !pOffset || pLimit ); /* OFFSET implies LIMIT */ - if( pNew==0 ){ - assert( db->mallocFailed ); - pNew = &standin; - memset(pNew, 0, sizeof(*pNew)); - } - if( pEList==0 ){ - pEList = sqlite3ExprListAppend(pParse, 0, sqlite3Expr(db,TK_ALL,0)); - } - pNew->pEList = pEList; - pNew->pSrc = pSrc; - pNew->pWhere = pWhere; - pNew->pGroupBy = pGroupBy; - pNew->pHaving = pHaving; - pNew->pOrderBy = pOrderBy; - pNew->selFlags = isDistinct ? SF_Distinct : 0; - pNew->op = TK_SELECT; - pNew->pLimit = pLimit; - pNew->pOffset = pOffset; - assert( pOffset==0 || pLimit!=0 ); - pNew->addrOpenEphm[0] = -1; - pNew->addrOpenEphm[1] = -1; - pNew->addrOpenEphm[2] = -1; - if( db->mallocFailed ) { - clearSelect(db, pNew); - if( pNew!=&standin ) sqlite3DbFree(db, pNew); - pNew = 0; - }else{ - assert( pNew->pSrc!=0 || pParse->nErr>0 ); - } - assert( pNew!=&standin ); - return pNew; -} - -/* -** Delete the given Select structure and all of its substructures. -*/ -void sqlite3SelectDelete(sqlite3 *db, Select *p){ - if( p ){ - clearSelect(db, p); - sqlite3DbFree(db, p); - } -} - -/* -** Given 1 to 3 identifiers preceeding the JOIN keyword, determine the -** type of join. Return an integer constant that expresses that type -** in terms of the following bit values: -** -** JT_INNER -** JT_CROSS -** JT_OUTER -** JT_NATURAL -** JT_LEFT -** JT_RIGHT -** -** A full outer join is the combination of JT_LEFT and JT_RIGHT. -** -** If an illegal or unsupported join type is seen, then still return -** a join type, but put an error in the pParse structure. -*/ -int sqlite3JoinType(Parse *pParse, Token *pA, Token *pB, Token *pC){ - int jointype = 0; - Token *apAll[3]; - Token *p; - /* 0123456789 123456789 123456789 123 */ - static const char zKeyText[] = "naturaleftouterightfullinnercross"; - static const struct { - u8 i; /* Beginning of keyword text in zKeyText[] */ - u8 nChar; /* Length of the keyword in characters */ - u8 code; /* Join type mask */ - } aKeyword[] = { - /* natural */ { 0, 7, JT_NATURAL }, - /* left */ { 6, 4, JT_LEFT|JT_OUTER }, - /* outer */ { 10, 5, JT_OUTER }, - /* right */ { 14, 5, JT_RIGHT|JT_OUTER }, - /* full */ { 19, 4, JT_LEFT|JT_RIGHT|JT_OUTER }, - /* inner */ { 23, 5, JT_INNER }, - /* cross */ { 28, 5, JT_INNER|JT_CROSS }, - }; - int i, j; - apAll[0] = pA; - apAll[1] = pB; - apAll[2] = pC; - for(i=0; i<3 && apAll[i]; i++){ - p = apAll[i]; - for(j=0; jn==aKeyword[j].nChar - && sqlite3StrNICmp((char*)p->z, &zKeyText[aKeyword[j].i], p->n)==0 ){ - jointype |= aKeyword[j].code; - break; - } - } - testcase( j==0 || j==1 || j==2 || j==3 || j==4 || j==5 || j==6 ); - if( j>=ArraySize(aKeyword) ){ - jointype |= JT_ERROR; - break; - } - } - if( - (jointype & (JT_INNER|JT_OUTER))==(JT_INNER|JT_OUTER) || - (jointype & JT_ERROR)!=0 - ){ - const char *zSp = " "; - assert( pB!=0 ); - if( pC==0 ){ zSp++; } - sqlite3ErrorMsg(pParse, "unknown or unsupported join type: " - "%T %T%s%T", pA, pB, zSp, pC); - jointype = JT_INNER; - }else if( (jointype & JT_OUTER)!=0 - && (jointype & (JT_LEFT|JT_RIGHT))!=JT_LEFT ){ - sqlite3ErrorMsg(pParse, - "RIGHT and FULL OUTER JOINs are not currently supported"); - jointype = JT_INNER; - } - return jointype; -} - -/* -** Return the index of a column in a table. Return -1 if the column -** is not contained in the table. -*/ -static int columnIndex(Table *pTab, const char *zCol){ - int i; - for(i=0; inCol; i++){ - if( sqlite3StrICmp(pTab->aCol[i].zName, zCol)==0 ) return i; - } - return -1; -} - -/* -** Search the first N tables in pSrc, from left to right, looking for a -** table that has a column named zCol. -** -** When found, set *piTab and *piCol to the table index and column index -** of the matching column and return TRUE. -** -** If not found, return FALSE. -*/ -static int tableAndColumnIndex( - SrcList *pSrc, /* Array of tables to search */ - int N, /* Number of tables in pSrc->a[] to search */ - const char *zCol, /* Name of the column we are looking for */ - int *piTab, /* Write index of pSrc->a[] here */ - int *piCol /* Write index of pSrc->a[*piTab].pTab->aCol[] here */ -){ - int i; /* For looping over tables in pSrc */ - int iCol; /* Index of column matching zCol */ - - assert( (piTab==0)==(piCol==0) ); /* Both or neither are NULL */ - for(i=0; ia[i].pTab, zCol); - if( iCol>=0 ){ - if( piTab ){ - *piTab = i; - *piCol = iCol; - } - return 1; - } - } - return 0; -} - -/* -** This function is used to add terms implied by JOIN syntax to the -** WHERE clause expression of a SELECT statement. The new term, which -** is ANDed with the existing WHERE clause, is of the form: -** -** (tab1.col1 = tab2.col2) -** -** where tab1 is the iSrc'th table in SrcList pSrc and tab2 is the -** (iSrc+1)'th. Column col1 is column iColLeft of tab1, and col2 is -** column iColRight of tab2. -*/ -static void addWhereTerm( - Parse *pParse, /* Parsing context */ - SrcList *pSrc, /* List of tables in FROM clause */ - int iLeft, /* Index of first table to join in pSrc */ - int iColLeft, /* Index of column in first table */ - int iRight, /* Index of second table in pSrc */ - int iColRight, /* Index of column in second table */ - int isOuterJoin, /* True if this is an OUTER join */ - Expr **ppWhere /* IN/OUT: The WHERE clause to add to */ -){ - sqlite3 *db = pParse->db; - Expr *pE1; - Expr *pE2; - Expr *pEq; - - assert( iLeftnSrc>iRight ); - assert( pSrc->a[iLeft].pTab ); - assert( pSrc->a[iRight].pTab ); - - pE1 = sqlite3CreateColumnExpr(db, pSrc, iLeft, iColLeft); - pE2 = sqlite3CreateColumnExpr(db, pSrc, iRight, iColRight); - - pEq = sqlite3PExpr(pParse, TK_EQ, pE1, pE2, 0); - if( pEq && isOuterJoin ){ - ExprSetProperty(pEq, EP_FromJoin); - assert( !ExprHasAnyProperty(pEq, EP_TokenOnly|EP_Reduced) ); - ExprSetIrreducible(pEq); - pEq->iRightJoinTable = (i16)pE2->iTable; - } - *ppWhere = sqlite3ExprAnd(db, *ppWhere, pEq); -} - -/* -** Set the EP_FromJoin property on all terms of the given expression. -** And set the Expr.iRightJoinTable to iTable for every term in the -** expression. -** -** The EP_FromJoin property is used on terms of an expression to tell -** the LEFT OUTER JOIN processing logic that this term is part of the -** join restriction specified in the ON or USING clause and not a part -** of the more general WHERE clause. These terms are moved over to the -** WHERE clause during join processing but we need to remember that they -** originated in the ON or USING clause. -** -** The Expr.iRightJoinTable tells the WHERE clause processing that the -** expression depends on table iRightJoinTable even if that table is not -** explicitly mentioned in the expression. That information is needed -** for cases like this: -** -** SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.b AND t1.x=5 -** -** The where clause needs to defer the handling of the t1.x=5 -** term until after the t2 loop of the join. In that way, a -** NULL t2 row will be inserted whenever t1.x!=5. If we do not -** defer the handling of t1.x=5, it will be processed immediately -** after the t1 loop and rows with t1.x!=5 will never appear in -** the output, which is incorrect. -*/ -static void setJoinExpr(Expr *p, int iTable){ - while( p ){ - ExprSetProperty(p, EP_FromJoin); - assert( !ExprHasAnyProperty(p, EP_TokenOnly|EP_Reduced) ); - ExprSetIrreducible(p); - p->iRightJoinTable = (i16)iTable; - setJoinExpr(p->pLeft, iTable); - p = p->pRight; - } -} - -/* -** This routine processes the join information for a SELECT statement. -** ON and USING clauses are converted into extra terms of the WHERE clause. -** NATURAL joins also create extra WHERE clause terms. -** -** The terms of a FROM clause are contained in the Select.pSrc structure. -** The left most table is the first entry in Select.pSrc. The right-most -** table is the last entry. The join operator is held in the entry to -** the left. Thus entry 0 contains the join operator for the join between -** entries 0 and 1. Any ON or USING clauses associated with the join are -** also attached to the left entry. -** -** This routine returns the number of errors encountered. -*/ -static int sqliteProcessJoin(Parse *pParse, Select *p){ - SrcList *pSrc; /* All tables in the FROM clause */ - int i, j; /* Loop counters */ - struct SrcList_item *pLeft; /* Left table being joined */ - struct SrcList_item *pRight; /* Right table being joined */ - - pSrc = p->pSrc; - pLeft = &pSrc->a[0]; - pRight = &pLeft[1]; - for(i=0; inSrc-1; i++, pRight++, pLeft++){ - Table *pLeftTab = pLeft->pTab; - Table *pRightTab = pRight->pTab; - int isOuter; - - if( NEVER(pLeftTab==0 || pRightTab==0) ) continue; - isOuter = (pRight->jointype & JT_OUTER)!=0; - - /* When the NATURAL keyword is present, add WHERE clause terms for - ** every column that the two tables have in common. - */ - if( pRight->jointype & JT_NATURAL ){ - if( pRight->pOn || pRight->pUsing ){ - sqlite3ErrorMsg(pParse, "a NATURAL join may not have " - "an ON or USING clause", 0); - return 1; - } - for(j=0; jnCol; j++){ - char *zName; /* Name of column in the right table */ - int iLeft; /* Matching left table */ - int iLeftCol; /* Matching column in the left table */ - - zName = pRightTab->aCol[j].zName; - if( tableAndColumnIndex(pSrc, i+1, zName, &iLeft, &iLeftCol) ){ - addWhereTerm(pParse, pSrc, iLeft, iLeftCol, i+1, j, - isOuter, &p->pWhere); - } - } - } - - /* Disallow both ON and USING clauses in the same join - */ - if( pRight->pOn && pRight->pUsing ){ - sqlite3ErrorMsg(pParse, "cannot have both ON and USING " - "clauses in the same join"); - return 1; - } - - /* Add the ON clause to the end of the WHERE clause, connected by - ** an AND operator. - */ - if( pRight->pOn ){ - if( isOuter ) setJoinExpr(pRight->pOn, pRight->iCursor); - p->pWhere = sqlite3ExprAnd(pParse->db, p->pWhere, pRight->pOn); - pRight->pOn = 0; - } - - /* Create extra terms on the WHERE clause for each column named - ** in the USING clause. Example: If the two tables to be joined are - ** A and B and the USING clause names X, Y, and Z, then add this - ** to the WHERE clause: A.X=B.X AND A.Y=B.Y AND A.Z=B.Z - ** Report an error if any column mentioned in the USING clause is - ** not contained in both tables to be joined. - */ - if( pRight->pUsing ){ - IdList *pList = pRight->pUsing; - for(j=0; jnId; j++){ - char *zName; /* Name of the term in the USING clause */ - int iLeft; /* Table on the left with matching column name */ - int iLeftCol; /* Column number of matching column on the left */ - int iRightCol; /* Column number of matching column on the right */ - - zName = pList->a[j].zName; - iRightCol = columnIndex(pRightTab, zName); - if( iRightCol<0 - || !tableAndColumnIndex(pSrc, i+1, zName, &iLeft, &iLeftCol) - ){ - sqlite3ErrorMsg(pParse, "cannot join using column %s - column " - "not present in both tables", zName); - return 1; - } - addWhereTerm(pParse, pSrc, iLeft, iLeftCol, i+1, iRightCol, - isOuter, &p->pWhere); - } - } - } - return 0; -} - -/* -** Insert code into "v" that will push the record on the top of the -** stack into the sorter. -*/ -static void pushOntoSorter( - Parse *pParse, /* Parser context */ - ExprList *pOrderBy, /* The ORDER BY clause */ - Select *pSelect, /* The whole SELECT statement */ - int regData /* Register holding data to be sorted */ -){ - Vdbe *v = pParse->pVdbe; - int nExpr = pOrderBy->nExpr; - int regBase = sqlite3GetTempRange(pParse, nExpr+2); - int regRecord = sqlite3GetTempReg(pParse); - int op; - sqlite3ExprCacheClear(pParse); - sqlite3ExprCodeExprList(pParse, pOrderBy, regBase, 0); - sqlite3VdbeAddOp2(v, OP_Sequence, pOrderBy->iECursor, regBase+nExpr); - sqlite3ExprCodeMove(pParse, regData, regBase+nExpr+1, 1); - sqlite3VdbeAddOp3(v, OP_MakeRecord, regBase, nExpr + 2, regRecord); - if( pSelect->selFlags & SF_UseSorter ){ - op = OP_SorterInsert; - }else{ - op = OP_IdxInsert; - } - sqlite3VdbeAddOp2(v, op, pOrderBy->iECursor, regRecord); - sqlite3ReleaseTempReg(pParse, regRecord); - sqlite3ReleaseTempRange(pParse, regBase, nExpr+2); - if( pSelect->iLimit ){ - int addr1, addr2; - int iLimit; - if( pSelect->iOffset ){ - iLimit = pSelect->iOffset+1; - }else{ - iLimit = pSelect->iLimit; - } - addr1 = sqlite3VdbeAddOp1(v, OP_IfZero, iLimit); - sqlite3VdbeAddOp2(v, OP_AddImm, iLimit, -1); - addr2 = sqlite3VdbeAddOp0(v, OP_Goto); - sqlite3VdbeJumpHere(v, addr1); - sqlite3VdbeAddOp1(v, OP_Last, pOrderBy->iECursor); - sqlite3VdbeAddOp1(v, OP_Delete, pOrderBy->iECursor); - sqlite3VdbeJumpHere(v, addr2); - } -} - -/* -** Add code to implement the OFFSET -*/ -static void codeOffset( - Vdbe *v, /* Generate code into this VM */ - Select *p, /* The SELECT statement being coded */ - int iContinue /* Jump here to skip the current record */ -){ - if( p->iOffset && iContinue!=0 ){ - int addr; - sqlite3VdbeAddOp2(v, OP_AddImm, p->iOffset, -1); - addr = sqlite3VdbeAddOp1(v, OP_IfNeg, p->iOffset); - sqlite3VdbeAddOp2(v, OP_Goto, 0, iContinue); - VdbeComment((v, "skip OFFSET records")); - sqlite3VdbeJumpHere(v, addr); - } -} - -/* -** Add code that will check to make sure the N registers starting at iMem -** form a distinct entry. iTab is a sorting index that holds previously -** seen combinations of the N values. A new entry is made in iTab -** if the current N values are new. -** -** A jump to addrRepeat is made and the N+1 values are popped from the -** stack if the top N elements are not distinct. -*/ -static void codeDistinct( - Parse *pParse, /* Parsing and code generating context */ - int iTab, /* A sorting index used to test for distinctness */ - int addrRepeat, /* Jump to here if not distinct */ - int N, /* Number of elements */ - int iMem /* First element */ -){ - Vdbe *v; - int r1; - - v = pParse->pVdbe; - r1 = sqlite3GetTempReg(pParse); - sqlite3VdbeAddOp4Int(v, OP_Found, iTab, addrRepeat, iMem, N); - sqlite3VdbeAddOp3(v, OP_MakeRecord, iMem, N, r1); - sqlite3VdbeAddOp2(v, OP_IdxInsert, iTab, r1); - sqlite3ReleaseTempReg(pParse, r1); -} - -#ifndef SQLITE_OMIT_SUBQUERY -/* -** Generate an error message when a SELECT is used within a subexpression -** (example: "a IN (SELECT * FROM table)") but it has more than 1 result -** column. We do this in a subroutine because the error used to occur -** in multiple places. (The error only occurs in one place now, but we -** retain the subroutine to minimize code disruption.) -*/ -static int checkForMultiColumnSelectError( - Parse *pParse, /* Parse context. */ - SelectDest *pDest, /* Destination of SELECT results */ - int nExpr /* Number of result columns returned by SELECT */ -){ - int eDest = pDest->eDest; - if( nExpr>1 && (eDest==SRT_Mem || eDest==SRT_Set) ){ - sqlite3ErrorMsg(pParse, "only a single result allowed for " - "a SELECT that is part of an expression"); - return 1; - }else{ - return 0; - } -} -#endif - -/* -** This routine generates the code for the inside of the inner loop -** of a SELECT. -** -** If srcTab and nColumn are both zero, then the pEList expressions -** are evaluated in order to get the data for this row. If nColumn>0 -** then data is pulled from srcTab and pEList is used only to get the -** datatypes for each column. -*/ -static void selectInnerLoop( - Parse *pParse, /* The parser context */ - Select *p, /* The complete select statement being coded */ - ExprList *pEList, /* List of values being extracted */ - int srcTab, /* Pull data from this table */ - int nColumn, /* Number of columns in the source table */ - ExprList *pOrderBy, /* If not NULL, sort results using this key */ - int distinct, /* If >=0, make sure results are distinct */ - SelectDest *pDest, /* How to dispose of the results */ - int iContinue, /* Jump here to continue with next row */ - int iBreak /* Jump here to break out of the inner loop */ -){ - Vdbe *v = pParse->pVdbe; - int i; - int hasDistinct; /* True if the DISTINCT keyword is present */ - int regResult; /* Start of memory holding result set */ - int eDest = pDest->eDest; /* How to dispose of results */ - int iParm = pDest->iParm; /* First argument to disposal method */ - int nResultCol; /* Number of result columns */ - - assert( v ); - if( NEVER(v==0) ) return; - assert( pEList!=0 ); - hasDistinct = distinct>=0; - if( pOrderBy==0 && !hasDistinct ){ - codeOffset(v, p, iContinue); - } - - /* Pull the requested columns. - */ - if( nColumn>0 ){ - nResultCol = nColumn; - }else{ - nResultCol = pEList->nExpr; - } - if( pDest->iMem==0 ){ - pDest->iMem = pParse->nMem+1; - pDest->nMem = nResultCol; - pParse->nMem += nResultCol; - }else{ - assert( pDest->nMem==nResultCol ); - } - regResult = pDest->iMem; - if( nColumn>0 ){ - for(i=0; inExpr==nColumn ); - codeDistinct(pParse, distinct, iContinue, nColumn, regResult); - if( pOrderBy==0 ){ - codeOffset(v, p, iContinue); - } - } - - switch( eDest ){ - /* In this mode, write each query result to the key of the temporary - ** table iParm. - */ -#ifndef SQLITE_OMIT_COMPOUND_SELECT - case SRT_Union: { - int r1; - r1 = sqlite3GetTempReg(pParse); - sqlite3VdbeAddOp3(v, OP_MakeRecord, regResult, nColumn, r1); - sqlite3VdbeAddOp2(v, OP_IdxInsert, iParm, r1); - sqlite3ReleaseTempReg(pParse, r1); - break; - } - - /* Construct a record from the query result, but instead of - ** saving that record, use it as a key to delete elements from - ** the temporary table iParm. - */ - case SRT_Except: { - sqlite3VdbeAddOp3(v, OP_IdxDelete, iParm, regResult, nColumn); - break; - } -#endif - - /* Store the result as data using a unique key. - */ - case SRT_Table: - case SRT_EphemTab: { - int r1 = sqlite3GetTempReg(pParse); - testcase( eDest==SRT_Table ); - testcase( eDest==SRT_EphemTab ); - sqlite3VdbeAddOp3(v, OP_MakeRecord, regResult, nColumn, r1); - if( pOrderBy ){ - pushOntoSorter(pParse, pOrderBy, p, r1); - }else{ - int r2 = sqlite3GetTempReg(pParse); - sqlite3VdbeAddOp2(v, OP_NewRowid, iParm, r2); - sqlite3VdbeAddOp3(v, OP_Insert, iParm, r1, r2); - sqlite3VdbeChangeP5(v, OPFLAG_APPEND); - sqlite3ReleaseTempReg(pParse, r2); - } - sqlite3ReleaseTempReg(pParse, r1); - break; - } - -#ifndef SQLITE_OMIT_SUBQUERY - /* If we are creating a set for an "expr IN (SELECT ...)" construct, - ** then there should be a single item on the stack. Write this - ** item into the set table with bogus data. - */ - case SRT_Set: { - assert( nColumn==1 ); - p->affinity = sqlite3CompareAffinity(pEList->a[0].pExpr, pDest->affinity); - if( pOrderBy ){ - /* At first glance you would think we could optimize out the - ** ORDER BY in this case since the order of entries in the set - ** does not matter. But there might be a LIMIT clause, in which - ** case the order does matter */ - pushOntoSorter(pParse, pOrderBy, p, regResult); - }else{ - int r1 = sqlite3GetTempReg(pParse); - sqlite3VdbeAddOp4(v, OP_MakeRecord, regResult, 1, r1, &p->affinity, 1); - sqlite3ExprCacheAffinityChange(pParse, regResult, 1); - sqlite3VdbeAddOp2(v, OP_IdxInsert, iParm, r1); - sqlite3ReleaseTempReg(pParse, r1); - } - break; - } - - /* If any row exist in the result set, record that fact and abort. - */ - case SRT_Exists: { - sqlite3VdbeAddOp2(v, OP_Integer, 1, iParm); - /* The LIMIT clause will terminate the loop for us */ - break; - } - - /* If this is a scalar select that is part of an expression, then - ** store the results in the appropriate memory cell and break out - ** of the scan loop. - */ - case SRT_Mem: { - assert( nColumn==1 ); - if( pOrderBy ){ - pushOntoSorter(pParse, pOrderBy, p, regResult); - }else{ - sqlite3ExprCodeMove(pParse, regResult, iParm, 1); - /* The LIMIT clause will jump out of the loop for us */ - } - break; - } -#endif /* #ifndef SQLITE_OMIT_SUBQUERY */ - - /* Send the data to the callback function or to a subroutine. In the - ** case of a subroutine, the subroutine itself is responsible for - ** popping the data from the stack. - */ - case SRT_Coroutine: - case SRT_Output: { - testcase( eDest==SRT_Coroutine ); - testcase( eDest==SRT_Output ); - if( pOrderBy ){ - int r1 = sqlite3GetTempReg(pParse); - sqlite3VdbeAddOp3(v, OP_MakeRecord, regResult, nColumn, r1); - pushOntoSorter(pParse, pOrderBy, p, r1); - sqlite3ReleaseTempReg(pParse, r1); - }else if( eDest==SRT_Coroutine ){ - sqlite3VdbeAddOp1(v, OP_Yield, pDest->iParm); - }else{ - sqlite3VdbeAddOp2(v, OP_ResultRow, regResult, nColumn); - sqlite3ExprCacheAffinityChange(pParse, regResult, nColumn); - } - break; - } - -#if !defined(SQLITE_OMIT_TRIGGER) - /* Discard the results. This is used for SELECT statements inside - ** the body of a TRIGGER. The purpose of such selects is to call - ** user-defined functions that have side effects. We do not care - ** about the actual results of the select. - */ - default: { - assert( eDest==SRT_Discard ); - break; - } -#endif - } - - /* Jump to the end of the loop if the LIMIT is reached. Except, if - ** there is a sorter, in which case the sorter has already limited - ** the output for us. - */ - if( pOrderBy==0 && p->iLimit ){ - sqlite3VdbeAddOp3(v, OP_IfZero, p->iLimit, iBreak, -1); - } -} - -/* -** Given an expression list, generate a KeyInfo structure that records -** the collating sequence for each expression in that expression list. -** -** If the ExprList is an ORDER BY or GROUP BY clause then the resulting -** KeyInfo structure is appropriate for initializing a virtual index to -** implement that clause. If the ExprList is the result set of a SELECT -** then the KeyInfo structure is appropriate for initializing a virtual -** index to implement a DISTINCT test. -** -** Space to hold the KeyInfo structure is obtain from malloc. The calling -** function is responsible for seeing that this structure is eventually -** freed. Add the KeyInfo structure to the P4 field of an opcode using -** P4_KEYINFO_HANDOFF is the usual way of dealing with this. -*/ -static KeyInfo *keyInfoFromExprList(Parse *pParse, ExprList *pList){ - sqlite3 *db = pParse->db; - int nExpr; - KeyInfo *pInfo; - struct ExprList_item *pItem; - int i; - - nExpr = pList->nExpr; - pInfo = sqlite3DbMallocZero(db, sizeof(*pInfo) + nExpr*(sizeof(CollSeq*)+1) ); - if( pInfo ){ - pInfo->aSortOrder = (u8*)&pInfo->aColl[nExpr]; - pInfo->nField = (u16)nExpr; - pInfo->enc = ENC(db); - pInfo->db = db; - for(i=0, pItem=pList->a; ipExpr); - if( !pColl ){ - pColl = db->pDfltColl; - } - pInfo->aColl[i] = pColl; - pInfo->aSortOrder[i] = pItem->sortOrder; - } - } - return pInfo; -} - -#ifndef SQLITE_OMIT_COMPOUND_SELECT -/* -** Name of the connection operator, used for error messages. -*/ -static const char *selectOpName(int id){ - char *z; - switch( id ){ - case TK_ALL: z = "UNION ALL"; break; - case TK_INTERSECT: z = "INTERSECT"; break; - case TK_EXCEPT: z = "EXCEPT"; break; - default: z = "UNION"; break; - } - return z; -} -#endif /* SQLITE_OMIT_COMPOUND_SELECT */ - -#ifndef SQLITE_OMIT_EXPLAIN -/* -** Unless an "EXPLAIN QUERY PLAN" command is being processed, this function -** is a no-op. Otherwise, it adds a single row of output to the EQP result, -** where the caption is of the form: -** -** "USE TEMP B-TREE FOR xxx" -** -** where xxx is one of "DISTINCT", "ORDER BY" or "GROUP BY". Exactly which -** is determined by the zUsage argument. -*/ -static void explainTempTable(Parse *pParse, const char *zUsage){ - if( pParse->explain==2 ){ - Vdbe *v = pParse->pVdbe; - char *zMsg = sqlite3MPrintf(pParse->db, "USE TEMP B-TREE FOR %s", zUsage); - sqlite3VdbeAddOp4(v, OP_Explain, pParse->iSelectId, 0, 0, zMsg, P4_DYNAMIC); - } -} - -/* -** Assign expression b to lvalue a. A second, no-op, version of this macro -** is provided when SQLITE_OMIT_EXPLAIN is defined. This allows the code -** in sqlite3Select() to assign values to structure member variables that -** only exist if SQLITE_OMIT_EXPLAIN is not defined without polluting the -** code with #ifndef directives. -*/ -# define explainSetInteger(a, b) a = b - -#else -/* No-op versions of the explainXXX() functions and macros. */ -# define explainTempTable(y,z) -# define explainSetInteger(y,z) -#endif - -#if !defined(SQLITE_OMIT_EXPLAIN) && !defined(SQLITE_OMIT_COMPOUND_SELECT) -/* -** Unless an "EXPLAIN QUERY PLAN" command is being processed, this function -** is a no-op. Otherwise, it adds a single row of output to the EQP result, -** where the caption is of one of the two forms: -** -** "COMPOSITE SUBQUERIES iSub1 and iSub2 (op)" -** "COMPOSITE SUBQUERIES iSub1 and iSub2 USING TEMP B-TREE (op)" -** -** where iSub1 and iSub2 are the integers passed as the corresponding -** function parameters, and op is the text representation of the parameter -** of the same name. The parameter "op" must be one of TK_UNION, TK_EXCEPT, -** TK_INTERSECT or TK_ALL. The first form is used if argument bUseTmp is -** false, or the second form if it is true. -*/ -static void explainComposite( - Parse *pParse, /* Parse context */ - int op, /* One of TK_UNION, TK_EXCEPT etc. */ - int iSub1, /* Subquery id 1 */ - int iSub2, /* Subquery id 2 */ - int bUseTmp /* True if a temp table was used */ -){ - assert( op==TK_UNION || op==TK_EXCEPT || op==TK_INTERSECT || op==TK_ALL ); - if( pParse->explain==2 ){ - Vdbe *v = pParse->pVdbe; - char *zMsg = sqlite3MPrintf( - pParse->db, "COMPOUND SUBQUERIES %d AND %d %s(%s)", iSub1, iSub2, - bUseTmp?"USING TEMP B-TREE ":"", selectOpName(op) - ); - sqlite3VdbeAddOp4(v, OP_Explain, pParse->iSelectId, 0, 0, zMsg, P4_DYNAMIC); - } -} -#else -/* No-op versions of the explainXXX() functions and macros. */ -# define explainComposite(v,w,x,y,z) -#endif - -/* -** If the inner loop was generated using a non-null pOrderBy argument, -** then the results were placed in a sorter. After the loop is terminated -** we need to run the sorter and output the results. The following -** routine generates the code needed to do that. -*/ -static void generateSortTail( - Parse *pParse, /* Parsing context */ - Select *p, /* The SELECT statement */ - Vdbe *v, /* Generate code into this VDBE */ - int nColumn, /* Number of columns of data */ - SelectDest *pDest /* Write the sorted results here */ -){ - int addrBreak = sqlite3VdbeMakeLabel(v); /* Jump here to exit loop */ - int addrContinue = sqlite3VdbeMakeLabel(v); /* Jump here for next cycle */ - int addr; - int iTab; - int pseudoTab = 0; - ExprList *pOrderBy = p->pOrderBy; - - int eDest = pDest->eDest; - int iParm = pDest->iParm; - - int regRow; - int regRowid; - - iTab = pOrderBy->iECursor; - regRow = sqlite3GetTempReg(pParse); - if( eDest==SRT_Output || eDest==SRT_Coroutine ){ - pseudoTab = pParse->nTab++; - sqlite3VdbeAddOp3(v, OP_OpenPseudo, pseudoTab, regRow, nColumn); - regRowid = 0; - }else{ - regRowid = sqlite3GetTempReg(pParse); - } - if( p->selFlags & SF_UseSorter ){ - int regSortOut = ++pParse->nMem; - int ptab2 = pParse->nTab++; - sqlite3VdbeAddOp3(v, OP_OpenPseudo, ptab2, regSortOut, pOrderBy->nExpr+2); - addr = 1 + sqlite3VdbeAddOp2(v, OP_SorterSort, iTab, addrBreak); - codeOffset(v, p, addrContinue); - sqlite3VdbeAddOp2(v, OP_SorterData, iTab, regSortOut); - sqlite3VdbeAddOp3(v, OP_Column, ptab2, pOrderBy->nExpr+1, regRow); - sqlite3VdbeChangeP5(v, OPFLAG_CLEARCACHE); - }else{ - addr = 1 + sqlite3VdbeAddOp2(v, OP_Sort, iTab, addrBreak); - codeOffset(v, p, addrContinue); - sqlite3VdbeAddOp3(v, OP_Column, iTab, pOrderBy->nExpr+1, regRow); - } - switch( eDest ){ - case SRT_Table: - case SRT_EphemTab: { - testcase( eDest==SRT_Table ); - testcase( eDest==SRT_EphemTab ); - sqlite3VdbeAddOp2(v, OP_NewRowid, iParm, regRowid); - sqlite3VdbeAddOp3(v, OP_Insert, iParm, regRow, regRowid); - sqlite3VdbeChangeP5(v, OPFLAG_APPEND); - break; - } -#ifndef SQLITE_OMIT_SUBQUERY - case SRT_Set: { - assert( nColumn==1 ); - sqlite3VdbeAddOp4(v, OP_MakeRecord, regRow, 1, regRowid, &p->affinity, 1); - sqlite3ExprCacheAffinityChange(pParse, regRow, 1); - sqlite3VdbeAddOp2(v, OP_IdxInsert, iParm, regRowid); - break; - } - case SRT_Mem: { - assert( nColumn==1 ); - sqlite3ExprCodeMove(pParse, regRow, iParm, 1); - /* The LIMIT clause will terminate the loop for us */ - break; - } -#endif - default: { - int i; - assert( eDest==SRT_Output || eDest==SRT_Coroutine ); - testcase( eDest==SRT_Output ); - testcase( eDest==SRT_Coroutine ); - for(i=0; iiMem+i ); - sqlite3VdbeAddOp3(v, OP_Column, pseudoTab, i, pDest->iMem+i); - if( i==0 ){ - sqlite3VdbeChangeP5(v, OPFLAG_CLEARCACHE); - } - } - if( eDest==SRT_Output ){ - sqlite3VdbeAddOp2(v, OP_ResultRow, pDest->iMem, nColumn); - sqlite3ExprCacheAffinityChange(pParse, pDest->iMem, nColumn); - }else{ - sqlite3VdbeAddOp1(v, OP_Yield, pDest->iParm); - } - break; - } - } - sqlite3ReleaseTempReg(pParse, regRow); - sqlite3ReleaseTempReg(pParse, regRowid); - - /* The bottom of the loop - */ - sqlite3VdbeResolveLabel(v, addrContinue); - if( p->selFlags & SF_UseSorter ){ - sqlite3VdbeAddOp2(v, OP_SorterNext, iTab, addr); - }else{ - sqlite3VdbeAddOp2(v, OP_Next, iTab, addr); - } - sqlite3VdbeResolveLabel(v, addrBreak); - if( eDest==SRT_Output || eDest==SRT_Coroutine ){ - sqlite3VdbeAddOp2(v, OP_Close, pseudoTab, 0); - } -} - -/* -** Return a pointer to a string containing the 'declaration type' of the -** expression pExpr. The string may be treated as static by the caller. -** -** The declaration type is the exact datatype definition extracted from the -** original CREATE TABLE statement if the expression is a column. The -** declaration type for a ROWID field is INTEGER. Exactly when an expression -** is considered a column can be complex in the presence of subqueries. The -** result-set expression in all of the following SELECT statements is -** considered a column by this function. -** -** SELECT col FROM tbl; -** SELECT (SELECT col FROM tbl; -** SELECT (SELECT col FROM tbl); -** SELECT abc FROM (SELECT col AS abc FROM tbl); -** -** The declaration type for any expression other than a column is NULL. -*/ -static const char *columnType( - NameContext *pNC, - Expr *pExpr, - const char **pzOriginDb, - const char **pzOriginTab, - const char **pzOriginCol -){ - char const *zType = 0; - char const *zOriginDb = 0; - char const *zOriginTab = 0; - char const *zOriginCol = 0; - int j; - if( NEVER(pExpr==0) || pNC->pSrcList==0 ) return 0; - - switch( pExpr->op ){ - case TK_AGG_COLUMN: - case TK_COLUMN: { - /* The expression is a column. Locate the table the column is being - ** extracted from in NameContext.pSrcList. This table may be real - ** database table or a subquery. - */ - Table *pTab = 0; /* Table structure column is extracted from */ - Select *pS = 0; /* Select the column is extracted from */ - int iCol = pExpr->iColumn; /* Index of column in pTab */ - testcase( pExpr->op==TK_AGG_COLUMN ); - testcase( pExpr->op==TK_COLUMN ); - while( pNC && !pTab ){ - SrcList *pTabList = pNC->pSrcList; - for(j=0;jnSrc && pTabList->a[j].iCursor!=pExpr->iTable;j++); - if( jnSrc ){ - pTab = pTabList->a[j].pTab; - pS = pTabList->a[j].pSelect; - }else{ - pNC = pNC->pNext; - } - } - - if( pTab==0 ){ - /* At one time, code such as "SELECT new.x" within a trigger would - ** cause this condition to run. Since then, we have restructured how - ** trigger code is generated and so this condition is no longer - ** possible. However, it can still be true for statements like - ** the following: - ** - ** CREATE TABLE t1(col INTEGER); - ** SELECT (SELECT t1.col) FROM FROM t1; - ** - ** when columnType() is called on the expression "t1.col" in the - ** sub-select. In this case, set the column type to NULL, even - ** though it should really be "INTEGER". - ** - ** This is not a problem, as the column type of "t1.col" is never - ** used. When columnType() is called on the expression - ** "(SELECT t1.col)", the correct type is returned (see the TK_SELECT - ** branch below. */ - break; - } - - assert( pTab && pExpr->pTab==pTab ); - if( pS ){ - /* The "table" is actually a sub-select or a view in the FROM clause - ** of the SELECT statement. Return the declaration type and origin - ** data for the result-set column of the sub-select. - */ - if( iCol>=0 && ALWAYS(iColpEList->nExpr) ){ - /* If iCol is less than zero, then the expression requests the - ** rowid of the sub-select or view. This expression is legal (see - ** test case misc2.2.2) - it always evaluates to NULL. - */ - NameContext sNC; - Expr *p = pS->pEList->a[iCol].pExpr; - sNC.pSrcList = pS->pSrc; - sNC.pNext = pNC; - sNC.pParse = pNC->pParse; - zType = columnType(&sNC, p, &zOriginDb, &zOriginTab, &zOriginCol); - } - }else if( ALWAYS(pTab->pSchema) ){ - /* A real table */ - assert( !pS ); - if( iCol<0 ) iCol = pTab->iPKey; - assert( iCol==-1 || (iCol>=0 && iColnCol) ); - if( iCol<0 ){ - zType = "INTEGER"; - zOriginCol = "rowid"; - }else{ - zType = pTab->aCol[iCol].zType; - zOriginCol = pTab->aCol[iCol].zName; - } - zOriginTab = pTab->zName; - if( pNC->pParse ){ - int iDb = sqlite3SchemaToIndex(pNC->pParse->db, pTab->pSchema); - zOriginDb = pNC->pParse->db->aDb[iDb].zName; - } - } - break; - } -#ifndef SQLITE_OMIT_SUBQUERY - case TK_SELECT: { - /* The expression is a sub-select. Return the declaration type and - ** origin info for the single column in the result set of the SELECT - ** statement. - */ - NameContext sNC; - Select *pS = pExpr->x.pSelect; - Expr *p = pS->pEList->a[0].pExpr; - assert( ExprHasProperty(pExpr, EP_xIsSelect) ); - sNC.pSrcList = pS->pSrc; - sNC.pNext = pNC; - sNC.pParse = pNC->pParse; - zType = columnType(&sNC, p, &zOriginDb, &zOriginTab, &zOriginCol); - break; - } -#endif - } - - if( pzOriginDb ){ - assert( pzOriginTab && pzOriginCol ); - *pzOriginDb = zOriginDb; - *pzOriginTab = zOriginTab; - *pzOriginCol = zOriginCol; - } - return zType; -} - -/* -** Generate code that will tell the VDBE the declaration types of columns -** in the result set. -*/ -static void generateColumnTypes( - Parse *pParse, /* Parser context */ - SrcList *pTabList, /* List of tables */ - ExprList *pEList /* Expressions defining the result set */ -){ -#ifndef SQLITE_OMIT_DECLTYPE - Vdbe *v = pParse->pVdbe; - int i; - NameContext sNC; - sNC.pSrcList = pTabList; - sNC.pParse = pParse; - for(i=0; inExpr; i++){ - Expr *p = pEList->a[i].pExpr; - const char *zType; -#ifdef SQLITE_ENABLE_COLUMN_METADATA - const char *zOrigDb = 0; - const char *zOrigTab = 0; - const char *zOrigCol = 0; - zType = columnType(&sNC, p, &zOrigDb, &zOrigTab, &zOrigCol); - - /* The vdbe must make its own copy of the column-type and other - ** column specific strings, in case the schema is reset before this - ** virtual machine is deleted. - */ - sqlite3VdbeSetColName(v, i, COLNAME_DATABASE, zOrigDb, SQLITE_TRANSIENT); - sqlite3VdbeSetColName(v, i, COLNAME_TABLE, zOrigTab, SQLITE_TRANSIENT); - sqlite3VdbeSetColName(v, i, COLNAME_COLUMN, zOrigCol, SQLITE_TRANSIENT); -#else - zType = columnType(&sNC, p, 0, 0, 0); -#endif - sqlite3VdbeSetColName(v, i, COLNAME_DECLTYPE, zType, SQLITE_TRANSIENT); - } -#endif /* SQLITE_OMIT_DECLTYPE */ -} - -/* -** Generate code that will tell the VDBE the names of columns -** in the result set. This information is used to provide the -** azCol[] values in the callback. -*/ -static void generateColumnNames( - Parse *pParse, /* Parser context */ - SrcList *pTabList, /* List of tables */ - ExprList *pEList /* Expressions defining the result set */ -){ - Vdbe *v = pParse->pVdbe; - int i, j; - sqlite3 *db = pParse->db; - int fullNames, shortNames; - -#ifndef SQLITE_OMIT_EXPLAIN - /* If this is an EXPLAIN, skip this step */ - if( pParse->explain ){ - return; - } -#endif - - if( pParse->colNamesSet || NEVER(v==0) || db->mallocFailed ) return; - pParse->colNamesSet = 1; - fullNames = (db->flags & SQLITE_FullColNames)!=0; - shortNames = (db->flags & SQLITE_ShortColNames)!=0; - sqlite3VdbeSetNumCols(v, pEList->nExpr); - for(i=0; inExpr; i++){ - Expr *p; - p = pEList->a[i].pExpr; - if( NEVER(p==0) ) continue; - if( pEList->a[i].zName ){ - char *zName = pEList->a[i].zName; - sqlite3VdbeSetColName(v, i, COLNAME_NAME, zName, SQLITE_TRANSIENT); - }else if( (p->op==TK_COLUMN || p->op==TK_AGG_COLUMN) && pTabList ){ - Table *pTab; - char *zCol; - int iCol = p->iColumn; - for(j=0; ALWAYS(jnSrc); j++){ - if( pTabList->a[j].iCursor==p->iTable ) break; - } - assert( jnSrc ); - pTab = pTabList->a[j].pTab; - if( iCol<0 ) iCol = pTab->iPKey; - assert( iCol==-1 || (iCol>=0 && iColnCol) ); - if( iCol<0 ){ - zCol = "rowid"; - }else{ - zCol = pTab->aCol[iCol].zName; - } - if( !shortNames && !fullNames ){ - sqlite3VdbeSetColName(v, i, COLNAME_NAME, - sqlite3DbStrDup(db, pEList->a[i].zSpan), SQLITE_DYNAMIC); - }else if( fullNames ){ - char *zName = 0; - zName = sqlite3MPrintf(db, "%s.%s", pTab->zName, zCol); - sqlite3VdbeSetColName(v, i, COLNAME_NAME, zName, SQLITE_DYNAMIC); - }else{ - sqlite3VdbeSetColName(v, i, COLNAME_NAME, zCol, SQLITE_TRANSIENT); - } - }else{ - sqlite3VdbeSetColName(v, i, COLNAME_NAME, - sqlite3DbStrDup(db, pEList->a[i].zSpan), SQLITE_DYNAMIC); - } - } - generateColumnTypes(pParse, pTabList, pEList); -} - -/* -** Given a an expression list (which is really the list of expressions -** that form the result set of a SELECT statement) compute appropriate -** column names for a table that would hold the expression list. -** -** All column names will be unique. -** -** Only the column names are computed. Column.zType, Column.zColl, -** and other fields of Column are zeroed. -** -** Return SQLITE_OK on success. If a memory allocation error occurs, -** store NULL in *paCol and 0 in *pnCol and return SQLITE_NOMEM. -*/ -static int selectColumnsFromExprList( - Parse *pParse, /* Parsing context */ - ExprList *pEList, /* Expr list from which to derive column names */ - int *pnCol, /* Write the number of columns here */ - Column **paCol /* Write the new column list here */ -){ - sqlite3 *db = pParse->db; /* Database connection */ - int i, j; /* Loop counters */ - int cnt; /* Index added to make the name unique */ - Column *aCol, *pCol; /* For looping over result columns */ - int nCol; /* Number of columns in the result set */ - Expr *p; /* Expression for a single result column */ - char *zName; /* Column name */ - int nName; /* Size of name in zName[] */ - - *pnCol = nCol = pEList->nExpr; - aCol = *paCol = sqlite3DbMallocZero(db, sizeof(aCol[0])*nCol); - if( aCol==0 ) return SQLITE_NOMEM; - for(i=0, pCol=aCol; ia[i].pExpr; - assert( p->pRight==0 || ExprHasProperty(p->pRight, EP_IntValue) - || p->pRight->u.zToken==0 || p->pRight->u.zToken[0]!=0 ); - if( (zName = pEList->a[i].zName)!=0 ){ - /* If the column contains an "AS " phrase, use as the name */ - zName = sqlite3DbStrDup(db, zName); - }else{ - Expr *pColExpr = p; /* The expression that is the result column name */ - Table *pTab; /* Table associated with this expression */ - while( pColExpr->op==TK_DOT ){ - pColExpr = pColExpr->pRight; - assert( pColExpr!=0 ); - } - if( pColExpr->op==TK_COLUMN && ALWAYS(pColExpr->pTab!=0) ){ - /* For columns use the column name name */ - int iCol = pColExpr->iColumn; - pTab = pColExpr->pTab; - if( iCol<0 ) iCol = pTab->iPKey; - zName = sqlite3MPrintf(db, "%s", - iCol>=0 ? pTab->aCol[iCol].zName : "rowid"); - }else if( pColExpr->op==TK_ID ){ - assert( !ExprHasProperty(pColExpr, EP_IntValue) ); - zName = sqlite3MPrintf(db, "%s", pColExpr->u.zToken); - }else{ - /* Use the original text of the column expression as its name */ - zName = sqlite3MPrintf(db, "%s", pEList->a[i].zSpan); - } - } - if( db->mallocFailed ){ - sqlite3DbFree(db, zName); - break; - } - - /* Make sure the column name is unique. If the name is not unique, - ** append a integer to the name so that it becomes unique. - */ - nName = sqlite3Strlen30(zName); - for(j=cnt=0; jzName = zName; - } - if( db->mallocFailed ){ - for(j=0; jdb; - NameContext sNC; - Column *pCol; - CollSeq *pColl; - int i; - Expr *p; - struct ExprList_item *a; - - assert( pSelect!=0 ); - assert( (pSelect->selFlags & SF_Resolved)!=0 ); - assert( nCol==pSelect->pEList->nExpr || db->mallocFailed ); - if( db->mallocFailed ) return; - memset(&sNC, 0, sizeof(sNC)); - sNC.pSrcList = pSelect->pSrc; - a = pSelect->pEList->a; - for(i=0, pCol=aCol; izType = sqlite3DbStrDup(db, columnType(&sNC, p, 0, 0, 0)); - pCol->affinity = sqlite3ExprAffinity(p); - if( pCol->affinity==0 ) pCol->affinity = SQLITE_AFF_NONE; - pColl = sqlite3ExprCollSeq(pParse, p); - if( pColl ){ - pCol->zColl = sqlite3DbStrDup(db, pColl->zName); - } - } -} - -/* -** Given a SELECT statement, generate a Table structure that describes -** the result set of that SELECT. -*/ -Table *sqlite3ResultSetOfSelect(Parse *pParse, Select *pSelect){ - Table *pTab; - sqlite3 *db = pParse->db; - int savedFlags; - - savedFlags = db->flags; - db->flags &= ~SQLITE_FullColNames; - db->flags |= SQLITE_ShortColNames; - sqlite3SelectPrep(pParse, pSelect, 0); - if( pParse->nErr ) return 0; - while( pSelect->pPrior ) pSelect = pSelect->pPrior; - db->flags = savedFlags; - pTab = sqlite3DbMallocZero(db, sizeof(Table) ); - if( pTab==0 ){ - return 0; - } - /* The sqlite3ResultSetOfSelect() is only used n contexts where lookaside - ** is disabled */ - assert( db->lookaside.bEnabled==0 ); - pTab->nRef = 1; - pTab->zName = 0; - pTab->nRowEst = 1000000; - selectColumnsFromExprList(pParse, pSelect->pEList, &pTab->nCol, &pTab->aCol); - selectAddColumnTypeAndCollation(pParse, pTab->nCol, pTab->aCol, pSelect); - pTab->iPKey = -1; - if( db->mallocFailed ){ - sqlite3DeleteTable(db, pTab); - return 0; - } - return pTab; -} - -/* -** Get a VDBE for the given parser context. Create a new one if necessary. -** If an error occurs, return NULL and leave a message in pParse. -*/ -Vdbe *sqlite3GetVdbe(Parse *pParse){ - Vdbe *v = pParse->pVdbe; - if( v==0 ){ - v = pParse->pVdbe = sqlite3VdbeCreate(pParse->db); -#ifndef SQLITE_OMIT_TRACE - if( v ){ - sqlite3VdbeAddOp0(v, OP_Trace); - } -#endif - } - return v; -} - - -/* -** Compute the iLimit and iOffset fields of the SELECT based on the -** pLimit and pOffset expressions. pLimit and pOffset hold the expressions -** that appear in the original SQL statement after the LIMIT and OFFSET -** keywords. Or NULL if those keywords are omitted. iLimit and iOffset -** are the integer memory register numbers for counters used to compute -** the limit and offset. If there is no limit and/or offset, then -** iLimit and iOffset are negative. -** -** This routine changes the values of iLimit and iOffset only if -** a limit or offset is defined by pLimit and pOffset. iLimit and -** iOffset should have been preset to appropriate default values -** (usually but not always -1) prior to calling this routine. -** Only if pLimit!=0 or pOffset!=0 do the limit registers get -** redefined. The UNION ALL operator uses this property to force -** the reuse of the same limit and offset registers across multiple -** SELECT statements. -*/ -static void computeLimitRegisters(Parse *pParse, Select *p, int iBreak){ - Vdbe *v = 0; - int iLimit = 0; - int iOffset; - int addr1, n; - if( p->iLimit ) return; - - /* - ** "LIMIT -1" always shows all rows. There is some - ** contraversy about what the correct behavior should be. - ** The current implementation interprets "LIMIT 0" to mean - ** no rows. - */ - sqlite3ExprCacheClear(pParse); - assert( p->pOffset==0 || p->pLimit!=0 ); - if( p->pLimit ){ - p->iLimit = iLimit = ++pParse->nMem; - v = sqlite3GetVdbe(pParse); - if( NEVER(v==0) ) return; /* VDBE should have already been allocated */ - if( sqlite3ExprIsInteger(p->pLimit, &n) ){ - sqlite3VdbeAddOp2(v, OP_Integer, n, iLimit); - VdbeComment((v, "LIMIT counter")); - if( n==0 ){ - sqlite3VdbeAddOp2(v, OP_Goto, 0, iBreak); - }else{ - if( p->nSelectRow > (double)n ) p->nSelectRow = (double)n; - } - }else{ - sqlite3ExprCode(pParse, p->pLimit, iLimit); - sqlite3VdbeAddOp1(v, OP_MustBeInt, iLimit); - VdbeComment((v, "LIMIT counter")); - sqlite3VdbeAddOp2(v, OP_IfZero, iLimit, iBreak); - } - if( p->pOffset ){ - p->iOffset = iOffset = ++pParse->nMem; - pParse->nMem++; /* Allocate an extra register for limit+offset */ - sqlite3ExprCode(pParse, p->pOffset, iOffset); - sqlite3VdbeAddOp1(v, OP_MustBeInt, iOffset); - VdbeComment((v, "OFFSET counter")); - addr1 = sqlite3VdbeAddOp1(v, OP_IfPos, iOffset); - sqlite3VdbeAddOp2(v, OP_Integer, 0, iOffset); - sqlite3VdbeJumpHere(v, addr1); - sqlite3VdbeAddOp3(v, OP_Add, iLimit, iOffset, iOffset+1); - VdbeComment((v, "LIMIT+OFFSET")); - addr1 = sqlite3VdbeAddOp1(v, OP_IfPos, iLimit); - sqlite3VdbeAddOp2(v, OP_Integer, -1, iOffset+1); - sqlite3VdbeJumpHere(v, addr1); - } - } -} - -#ifndef SQLITE_OMIT_COMPOUND_SELECT -/* -** Return the appropriate collating sequence for the iCol-th column of -** the result set for the compound-select statement "p". Return NULL if -** the column has no default collating sequence. -** -** The collating sequence for the compound select is taken from the -** left-most term of the select that has a collating sequence. -*/ -static CollSeq *multiSelectCollSeq(Parse *pParse, Select *p, int iCol){ - CollSeq *pRet; - if( p->pPrior ){ - pRet = multiSelectCollSeq(pParse, p->pPrior, iCol); - }else{ - pRet = 0; - } - assert( iCol>=0 ); - if( pRet==0 && iColpEList->nExpr ){ - pRet = sqlite3ExprCollSeq(pParse, p->pEList->a[iCol].pExpr); - } - return pRet; -} -#endif /* SQLITE_OMIT_COMPOUND_SELECT */ - -/* Forward reference */ -static int multiSelectOrderBy( - Parse *pParse, /* Parsing context */ - Select *p, /* The right-most of SELECTs to be coded */ - SelectDest *pDest /* What to do with query results */ -); - - -#ifndef SQLITE_OMIT_COMPOUND_SELECT -/* -** This routine is called to process a compound query form from -** two or more separate queries using UNION, UNION ALL, EXCEPT, or -** INTERSECT -** -** "p" points to the right-most of the two queries. the query on the -** left is p->pPrior. The left query could also be a compound query -** in which case this routine will be called recursively. -** -** The results of the total query are to be written into a destination -** of type eDest with parameter iParm. -** -** Example 1: Consider a three-way compound SQL statement. -** -** SELECT a FROM t1 UNION SELECT b FROM t2 UNION SELECT c FROM t3 -** -** This statement is parsed up as follows: -** -** SELECT c FROM t3 -** | -** `-----> SELECT b FROM t2 -** | -** `------> SELECT a FROM t1 -** -** The arrows in the diagram above represent the Select.pPrior pointer. -** So if this routine is called with p equal to the t3 query, then -** pPrior will be the t2 query. p->op will be TK_UNION in this case. -** -** Notice that because of the way SQLite parses compound SELECTs, the -** individual selects always group from left to right. -*/ -static int multiSelect( - Parse *pParse, /* Parsing context */ - Select *p, /* The right-most of SELECTs to be coded */ - SelectDest *pDest /* What to do with query results */ -){ - int rc = SQLITE_OK; /* Success code from a subroutine */ - Select *pPrior; /* Another SELECT immediately to our left */ - Vdbe *v; /* Generate code to this VDBE */ - SelectDest dest; /* Alternative data destination */ - Select *pDelete = 0; /* Chain of simple selects to delete */ - sqlite3 *db; /* Database connection */ -#ifndef SQLITE_OMIT_EXPLAIN - int iSub1; /* EQP id of left-hand query */ - int iSub2; /* EQP id of right-hand query */ -#endif - - /* Make sure there is no ORDER BY or LIMIT clause on prior SELECTs. Only - ** the last (right-most) SELECT in the series may have an ORDER BY or LIMIT. - */ - assert( p && p->pPrior ); /* Calling function guarantees this much */ - db = pParse->db; - pPrior = p->pPrior; - assert( pPrior->pRightmost!=pPrior ); - assert( pPrior->pRightmost==p->pRightmost ); - dest = *pDest; - if( pPrior->pOrderBy ){ - sqlite3ErrorMsg(pParse,"ORDER BY clause should come after %s not before", - selectOpName(p->op)); - rc = 1; - goto multi_select_end; - } - if( pPrior->pLimit ){ - sqlite3ErrorMsg(pParse,"LIMIT clause should come after %s not before", - selectOpName(p->op)); - rc = 1; - goto multi_select_end; - } - - v = sqlite3GetVdbe(pParse); - assert( v!=0 ); /* The VDBE already created by calling function */ - - /* Create the destination temporary table if necessary - */ - if( dest.eDest==SRT_EphemTab ){ - assert( p->pEList ); - sqlite3VdbeAddOp2(v, OP_OpenEphemeral, dest.iParm, p->pEList->nExpr); - sqlite3VdbeChangeP5(v, BTREE_UNORDERED); - dest.eDest = SRT_Table; - } - - /* Make sure all SELECTs in the statement have the same number of elements - ** in their result sets. - */ - assert( p->pEList && pPrior->pEList ); - if( p->pEList->nExpr!=pPrior->pEList->nExpr ){ - sqlite3ErrorMsg(pParse, "SELECTs to the left and right of %s" - " do not have the same number of result columns", selectOpName(p->op)); - rc = 1; - goto multi_select_end; - } - - /* Compound SELECTs that have an ORDER BY clause are handled separately. - */ - if( p->pOrderBy ){ - return multiSelectOrderBy(pParse, p, pDest); - } - - /* Generate code for the left and right SELECT statements. - */ - switch( p->op ){ - case TK_ALL: { - int addr = 0; - int nLimit; - assert( !pPrior->pLimit ); - pPrior->pLimit = p->pLimit; - pPrior->pOffset = p->pOffset; - explainSetInteger(iSub1, pParse->iNextSelectId); - rc = sqlite3Select(pParse, pPrior, &dest); - p->pLimit = 0; - p->pOffset = 0; - if( rc ){ - goto multi_select_end; - } - p->pPrior = 0; - p->iLimit = pPrior->iLimit; - p->iOffset = pPrior->iOffset; - if( p->iLimit ){ - addr = sqlite3VdbeAddOp1(v, OP_IfZero, p->iLimit); - VdbeComment((v, "Jump ahead if LIMIT reached")); - } - explainSetInteger(iSub2, pParse->iNextSelectId); - rc = sqlite3Select(pParse, p, &dest); - testcase( rc!=SQLITE_OK ); - pDelete = p->pPrior; - p->pPrior = pPrior; - p->nSelectRow += pPrior->nSelectRow; - if( pPrior->pLimit - && sqlite3ExprIsInteger(pPrior->pLimit, &nLimit) - && p->nSelectRow > (double)nLimit - ){ - p->nSelectRow = (double)nLimit; - } - if( addr ){ - sqlite3VdbeJumpHere(v, addr); - } - break; - } - case TK_EXCEPT: - case TK_UNION: { - int unionTab; /* Cursor number of the temporary table holding result */ - u8 op = 0; /* One of the SRT_ operations to apply to self */ - int priorOp; /* The SRT_ operation to apply to prior selects */ - Expr *pLimit, *pOffset; /* Saved values of p->nLimit and p->nOffset */ - int addr; - SelectDest uniondest; - - testcase( p->op==TK_EXCEPT ); - testcase( p->op==TK_UNION ); - priorOp = SRT_Union; - if( dest.eDest==priorOp && ALWAYS(!p->pLimit &&!p->pOffset) ){ - /* We can reuse a temporary table generated by a SELECT to our - ** right. - */ - assert( p->pRightmost!=p ); /* Can only happen for leftward elements - ** of a 3-way or more compound */ - assert( p->pLimit==0 ); /* Not allowed on leftward elements */ - assert( p->pOffset==0 ); /* Not allowed on leftward elements */ - unionTab = dest.iParm; - }else{ - /* We will need to create our own temporary table to hold the - ** intermediate results. - */ - unionTab = pParse->nTab++; - assert( p->pOrderBy==0 ); - addr = sqlite3VdbeAddOp2(v, OP_OpenEphemeral, unionTab, 0); - assert( p->addrOpenEphm[0] == -1 ); - p->addrOpenEphm[0] = addr; - p->pRightmost->selFlags |= SF_UsesEphemeral; - assert( p->pEList ); - } - - /* Code the SELECT statements to our left - */ - assert( !pPrior->pOrderBy ); - sqlite3SelectDestInit(&uniondest, priorOp, unionTab); - explainSetInteger(iSub1, pParse->iNextSelectId); - rc = sqlite3Select(pParse, pPrior, &uniondest); - if( rc ){ - goto multi_select_end; - } - - /* Code the current SELECT statement - */ - if( p->op==TK_EXCEPT ){ - op = SRT_Except; - }else{ - assert( p->op==TK_UNION ); - op = SRT_Union; - } - p->pPrior = 0; - pLimit = p->pLimit; - p->pLimit = 0; - pOffset = p->pOffset; - p->pOffset = 0; - uniondest.eDest = op; - explainSetInteger(iSub2, pParse->iNextSelectId); - rc = sqlite3Select(pParse, p, &uniondest); - testcase( rc!=SQLITE_OK ); - /* Query flattening in sqlite3Select() might refill p->pOrderBy. - ** Be sure to delete p->pOrderBy, therefore, to avoid a memory leak. */ - sqlite3ExprListDelete(db, p->pOrderBy); - pDelete = p->pPrior; - p->pPrior = pPrior; - p->pOrderBy = 0; - if( p->op==TK_UNION ) p->nSelectRow += pPrior->nSelectRow; - sqlite3ExprDelete(db, p->pLimit); - p->pLimit = pLimit; - p->pOffset = pOffset; - p->iLimit = 0; - p->iOffset = 0; - - /* Convert the data in the temporary table into whatever form - ** it is that we currently need. - */ - assert( unionTab==dest.iParm || dest.eDest!=priorOp ); - if( dest.eDest!=priorOp ){ - int iCont, iBreak, iStart; - assert( p->pEList ); - if( dest.eDest==SRT_Output ){ - Select *pFirst = p; - while( pFirst->pPrior ) pFirst = pFirst->pPrior; - generateColumnNames(pParse, 0, pFirst->pEList); - } - iBreak = sqlite3VdbeMakeLabel(v); - iCont = sqlite3VdbeMakeLabel(v); - computeLimitRegisters(pParse, p, iBreak); - sqlite3VdbeAddOp2(v, OP_Rewind, unionTab, iBreak); - iStart = sqlite3VdbeCurrentAddr(v); - selectInnerLoop(pParse, p, p->pEList, unionTab, p->pEList->nExpr, - 0, -1, &dest, iCont, iBreak); - sqlite3VdbeResolveLabel(v, iCont); - sqlite3VdbeAddOp2(v, OP_Next, unionTab, iStart); - sqlite3VdbeResolveLabel(v, iBreak); - sqlite3VdbeAddOp2(v, OP_Close, unionTab, 0); - } - break; - } - default: assert( p->op==TK_INTERSECT ); { - int tab1, tab2; - int iCont, iBreak, iStart; - Expr *pLimit, *pOffset; - int addr; - SelectDest intersectdest; - int r1; - - /* INTERSECT is different from the others since it requires - ** two temporary tables. Hence it has its own case. Begin - ** by allocating the tables we will need. - */ - tab1 = pParse->nTab++; - tab2 = pParse->nTab++; - assert( p->pOrderBy==0 ); - - addr = sqlite3VdbeAddOp2(v, OP_OpenEphemeral, tab1, 0); - assert( p->addrOpenEphm[0] == -1 ); - p->addrOpenEphm[0] = addr; - p->pRightmost->selFlags |= SF_UsesEphemeral; - assert( p->pEList ); - - /* Code the SELECTs to our left into temporary table "tab1". - */ - sqlite3SelectDestInit(&intersectdest, SRT_Union, tab1); - explainSetInteger(iSub1, pParse->iNextSelectId); - rc = sqlite3Select(pParse, pPrior, &intersectdest); - if( rc ){ - goto multi_select_end; - } - - /* Code the current SELECT into temporary table "tab2" - */ - addr = sqlite3VdbeAddOp2(v, OP_OpenEphemeral, tab2, 0); - assert( p->addrOpenEphm[1] == -1 ); - p->addrOpenEphm[1] = addr; - p->pPrior = 0; - pLimit = p->pLimit; - p->pLimit = 0; - pOffset = p->pOffset; - p->pOffset = 0; - intersectdest.iParm = tab2; - explainSetInteger(iSub2, pParse->iNextSelectId); - rc = sqlite3Select(pParse, p, &intersectdest); - testcase( rc!=SQLITE_OK ); - pDelete = p->pPrior; - p->pPrior = pPrior; - if( p->nSelectRow>pPrior->nSelectRow ) p->nSelectRow = pPrior->nSelectRow; - sqlite3ExprDelete(db, p->pLimit); - p->pLimit = pLimit; - p->pOffset = pOffset; - - /* Generate code to take the intersection of the two temporary - ** tables. - */ - assert( p->pEList ); - if( dest.eDest==SRT_Output ){ - Select *pFirst = p; - while( pFirst->pPrior ) pFirst = pFirst->pPrior; - generateColumnNames(pParse, 0, pFirst->pEList); - } - iBreak = sqlite3VdbeMakeLabel(v); - iCont = sqlite3VdbeMakeLabel(v); - computeLimitRegisters(pParse, p, iBreak); - sqlite3VdbeAddOp2(v, OP_Rewind, tab1, iBreak); - r1 = sqlite3GetTempReg(pParse); - iStart = sqlite3VdbeAddOp2(v, OP_RowKey, tab1, r1); - sqlite3VdbeAddOp4Int(v, OP_NotFound, tab2, iCont, r1, 0); - sqlite3ReleaseTempReg(pParse, r1); - selectInnerLoop(pParse, p, p->pEList, tab1, p->pEList->nExpr, - 0, -1, &dest, iCont, iBreak); - sqlite3VdbeResolveLabel(v, iCont); - sqlite3VdbeAddOp2(v, OP_Next, tab1, iStart); - sqlite3VdbeResolveLabel(v, iBreak); - sqlite3VdbeAddOp2(v, OP_Close, tab2, 0); - sqlite3VdbeAddOp2(v, OP_Close, tab1, 0); - break; - } - } - - explainComposite(pParse, p->op, iSub1, iSub2, p->op!=TK_ALL); - - /* Compute collating sequences used by - ** temporary tables needed to implement the compound select. - ** Attach the KeyInfo structure to all temporary tables. - ** - ** This section is run by the right-most SELECT statement only. - ** SELECT statements to the left always skip this part. The right-most - ** SELECT might also skip this part if it has no ORDER BY clause and - ** no temp tables are required. - */ - if( p->selFlags & SF_UsesEphemeral ){ - int i; /* Loop counter */ - KeyInfo *pKeyInfo; /* Collating sequence for the result set */ - Select *pLoop; /* For looping through SELECT statements */ - CollSeq **apColl; /* For looping through pKeyInfo->aColl[] */ - int nCol; /* Number of columns in result set */ - - assert( p->pRightmost==p ); - nCol = p->pEList->nExpr; - pKeyInfo = sqlite3DbMallocZero(db, - sizeof(*pKeyInfo)+nCol*(sizeof(CollSeq*) + 1)); - if( !pKeyInfo ){ - rc = SQLITE_NOMEM; - goto multi_select_end; - } - - pKeyInfo->enc = ENC(db); - pKeyInfo->nField = (u16)nCol; - - for(i=0, apColl=pKeyInfo->aColl; ipDfltColl; - } - } - - for(pLoop=p; pLoop; pLoop=pLoop->pPrior){ - for(i=0; i<2; i++){ - int addr = pLoop->addrOpenEphm[i]; - if( addr<0 ){ - /* If [0] is unused then [1] is also unused. So we can - ** always safely abort as soon as the first unused slot is found */ - assert( pLoop->addrOpenEphm[1]<0 ); - break; - } - sqlite3VdbeChangeP2(v, addr, nCol); - sqlite3VdbeChangeP4(v, addr, (char*)pKeyInfo, P4_KEYINFO); - pLoop->addrOpenEphm[i] = -1; - } - } - sqlite3DbFree(db, pKeyInfo); - } - -multi_select_end: - pDest->iMem = dest.iMem; - pDest->nMem = dest.nMem; - sqlite3SelectDelete(db, pDelete); - return rc; -} -#endif /* SQLITE_OMIT_COMPOUND_SELECT */ - -/* -** Code an output subroutine for a coroutine implementation of a -** SELECT statment. -** -** The data to be output is contained in pIn->iMem. There are -** pIn->nMem columns to be output. pDest is where the output should -** be sent. -** -** regReturn is the number of the register holding the subroutine -** return address. -** -** If regPrev>0 then it is the first register in a vector that -** records the previous output. mem[regPrev] is a flag that is false -** if there has been no previous output. If regPrev>0 then code is -** generated to suppress duplicates. pKeyInfo is used for comparing -** keys. -** -** If the LIMIT found in p->iLimit is reached, jump immediately to -** iBreak. -*/ -static int generateOutputSubroutine( - Parse *pParse, /* Parsing context */ - Select *p, /* The SELECT statement */ - SelectDest *pIn, /* Coroutine supplying data */ - SelectDest *pDest, /* Where to send the data */ - int regReturn, /* The return address register */ - int regPrev, /* Previous result register. No uniqueness if 0 */ - KeyInfo *pKeyInfo, /* For comparing with previous entry */ - int p4type, /* The p4 type for pKeyInfo */ - int iBreak /* Jump here if we hit the LIMIT */ -){ - Vdbe *v = pParse->pVdbe; - int iContinue; - int addr; - - addr = sqlite3VdbeCurrentAddr(v); - iContinue = sqlite3VdbeMakeLabel(v); - - /* Suppress duplicates for UNION, EXCEPT, and INTERSECT - */ - if( regPrev ){ - int j1, j2; - j1 = sqlite3VdbeAddOp1(v, OP_IfNot, regPrev); - j2 = sqlite3VdbeAddOp4(v, OP_Compare, pIn->iMem, regPrev+1, pIn->nMem, - (char*)pKeyInfo, p4type); - sqlite3VdbeAddOp3(v, OP_Jump, j2+2, iContinue, j2+2); - sqlite3VdbeJumpHere(v, j1); - sqlite3ExprCodeCopy(pParse, pIn->iMem, regPrev+1, pIn->nMem); - sqlite3VdbeAddOp2(v, OP_Integer, 1, regPrev); - } - if( pParse->db->mallocFailed ) return 0; - - /* Suppress the the first OFFSET entries if there is an OFFSET clause - */ - codeOffset(v, p, iContinue); - - switch( pDest->eDest ){ - /* Store the result as data using a unique key. - */ - case SRT_Table: - case SRT_EphemTab: { - int r1 = sqlite3GetTempReg(pParse); - int r2 = sqlite3GetTempReg(pParse); - testcase( pDest->eDest==SRT_Table ); - testcase( pDest->eDest==SRT_EphemTab ); - sqlite3VdbeAddOp3(v, OP_MakeRecord, pIn->iMem, pIn->nMem, r1); - sqlite3VdbeAddOp2(v, OP_NewRowid, pDest->iParm, r2); - sqlite3VdbeAddOp3(v, OP_Insert, pDest->iParm, r1, r2); - sqlite3VdbeChangeP5(v, OPFLAG_APPEND); - sqlite3ReleaseTempReg(pParse, r2); - sqlite3ReleaseTempReg(pParse, r1); - break; - } - -#ifndef SQLITE_OMIT_SUBQUERY - /* If we are creating a set for an "expr IN (SELECT ...)" construct, - ** then there should be a single item on the stack. Write this - ** item into the set table with bogus data. - */ - case SRT_Set: { - int r1; - assert( pIn->nMem==1 ); - p->affinity = - sqlite3CompareAffinity(p->pEList->a[0].pExpr, pDest->affinity); - r1 = sqlite3GetTempReg(pParse); - sqlite3VdbeAddOp4(v, OP_MakeRecord, pIn->iMem, 1, r1, &p->affinity, 1); - sqlite3ExprCacheAffinityChange(pParse, pIn->iMem, 1); - sqlite3VdbeAddOp2(v, OP_IdxInsert, pDest->iParm, r1); - sqlite3ReleaseTempReg(pParse, r1); - break; - } - -#if 0 /* Never occurs on an ORDER BY query */ - /* If any row exist in the result set, record that fact and abort. - */ - case SRT_Exists: { - sqlite3VdbeAddOp2(v, OP_Integer, 1, pDest->iParm); - /* The LIMIT clause will terminate the loop for us */ - break; - } -#endif - - /* If this is a scalar select that is part of an expression, then - ** store the results in the appropriate memory cell and break out - ** of the scan loop. - */ - case SRT_Mem: { - assert( pIn->nMem==1 ); - sqlite3ExprCodeMove(pParse, pIn->iMem, pDest->iParm, 1); - /* The LIMIT clause will jump out of the loop for us */ - break; - } -#endif /* #ifndef SQLITE_OMIT_SUBQUERY */ - - /* The results are stored in a sequence of registers - ** starting at pDest->iMem. Then the co-routine yields. - */ - case SRT_Coroutine: { - if( pDest->iMem==0 ){ - pDest->iMem = sqlite3GetTempRange(pParse, pIn->nMem); - pDest->nMem = pIn->nMem; - } - sqlite3ExprCodeMove(pParse, pIn->iMem, pDest->iMem, pDest->nMem); - sqlite3VdbeAddOp1(v, OP_Yield, pDest->iParm); - break; - } - - /* If none of the above, then the result destination must be - ** SRT_Output. This routine is never called with any other - ** destination other than the ones handled above or SRT_Output. - ** - ** For SRT_Output, results are stored in a sequence of registers. - ** Then the OP_ResultRow opcode is used to cause sqlite3_step() to - ** return the next row of result. - */ - default: { - assert( pDest->eDest==SRT_Output ); - sqlite3VdbeAddOp2(v, OP_ResultRow, pIn->iMem, pIn->nMem); - sqlite3ExprCacheAffinityChange(pParse, pIn->iMem, pIn->nMem); - break; - } - } - - /* Jump to the end of the loop if the LIMIT is reached. - */ - if( p->iLimit ){ - sqlite3VdbeAddOp3(v, OP_IfZero, p->iLimit, iBreak, -1); - } - - /* Generate the subroutine return - */ - sqlite3VdbeResolveLabel(v, iContinue); - sqlite3VdbeAddOp1(v, OP_Return, regReturn); - - return addr; -} - -/* -** Alternative compound select code generator for cases when there -** is an ORDER BY clause. -** -** We assume a query of the following form: -** -** ORDER BY -** -** is one of UNION ALL, UNION, EXCEPT, or INTERSECT. The idea -** is to code both and with the ORDER BY clause as -** co-routines. Then run the co-routines in parallel and merge the results -** into the output. In addition to the two coroutines (called selectA and -** selectB) there are 7 subroutines: -** -** outA: Move the output of the selectA coroutine into the output -** of the compound query. -** -** outB: Move the output of the selectB coroutine into the output -** of the compound query. (Only generated for UNION and -** UNION ALL. EXCEPT and INSERTSECT never output a row that -** appears only in B.) -** -** AltB: Called when there is data from both coroutines and AB. -** -** EofA: Called when data is exhausted from selectA. -** -** EofB: Called when data is exhausted from selectB. -** -** The implementation of the latter five subroutines depend on which -** is used: -** -** -** UNION ALL UNION EXCEPT INTERSECT -** ------------- ----------------- -------------- ----------------- -** AltB: outA, nextA outA, nextA outA, nextA nextA -** -** AeqB: outA, nextA nextA nextA outA, nextA -** -** AgtB: outB, nextB outB, nextB nextB nextB -** -** EofA: outB, nextB outB, nextB halt halt -** -** EofB: outA, nextA outA, nextA outA, nextA halt -** -** In the AltB, AeqB, and AgtB subroutines, an EOF on A following nextA -** causes an immediate jump to EofA and an EOF on B following nextB causes -** an immediate jump to EofB. Within EofA and EofB, and EOF on entry or -** following nextX causes a jump to the end of the select processing. -** -** Duplicate removal in the UNION, EXCEPT, and INTERSECT cases is handled -** within the output subroutine. The regPrev register set holds the previously -** output value. A comparison is made against this value and the output -** is skipped if the next results would be the same as the previous. -** -** The implementation plan is to implement the two coroutines and seven -** subroutines first, then put the control logic at the bottom. Like this: -** -** goto Init -** coA: coroutine for left query (A) -** coB: coroutine for right query (B) -** outA: output one row of A -** outB: output one row of B (UNION and UNION ALL only) -** EofA: ... -** EofB: ... -** AltB: ... -** AeqB: ... -** AgtB: ... -** Init: initialize coroutine registers -** yield coA -** if eof(A) goto EofA -** yield coB -** if eof(B) goto EofB -** Cmpr: Compare A, B -** Jump AltB, AeqB, AgtB -** End: ... -** -** We call AltB, AeqB, AgtB, EofA, and EofB "subroutines" but they are not -** actually called using Gosub and they do not Return. EofA and EofB loop -** until all data is exhausted then jump to the "end" labe. AltB, AeqB, -** and AgtB jump to either L2 or to one of EofA or EofB. -*/ -#ifndef SQLITE_OMIT_COMPOUND_SELECT -static int multiSelectOrderBy( - Parse *pParse, /* Parsing context */ - Select *p, /* The right-most of SELECTs to be coded */ - SelectDest *pDest /* What to do with query results */ -){ - int i, j; /* Loop counters */ - Select *pPrior; /* Another SELECT immediately to our left */ - Vdbe *v; /* Generate code to this VDBE */ - SelectDest destA; /* Destination for coroutine A */ - SelectDest destB; /* Destination for coroutine B */ - int regAddrA; /* Address register for select-A coroutine */ - int regEofA; /* Flag to indicate when select-A is complete */ - int regAddrB; /* Address register for select-B coroutine */ - int regEofB; /* Flag to indicate when select-B is complete */ - int addrSelectA; /* Address of the select-A coroutine */ - int addrSelectB; /* Address of the select-B coroutine */ - int regOutA; /* Address register for the output-A subroutine */ - int regOutB; /* Address register for the output-B subroutine */ - int addrOutA; /* Address of the output-A subroutine */ - int addrOutB = 0; /* Address of the output-B subroutine */ - int addrEofA; /* Address of the select-A-exhausted subroutine */ - int addrEofB; /* Address of the select-B-exhausted subroutine */ - int addrAltB; /* Address of the AB subroutine */ - int regLimitA; /* Limit register for select-A */ - int regLimitB; /* Limit register for select-A */ - int regPrev; /* A range of registers to hold previous output */ - int savedLimit; /* Saved value of p->iLimit */ - int savedOffset; /* Saved value of p->iOffset */ - int labelCmpr; /* Label for the start of the merge algorithm */ - int labelEnd; /* Label for the end of the overall SELECT stmt */ - int j1; /* Jump instructions that get retargetted */ - int op; /* One of TK_ALL, TK_UNION, TK_EXCEPT, TK_INTERSECT */ - KeyInfo *pKeyDup = 0; /* Comparison information for duplicate removal */ - KeyInfo *pKeyMerge; /* Comparison information for merging rows */ - sqlite3 *db; /* Database connection */ - ExprList *pOrderBy; /* The ORDER BY clause */ - int nOrderBy; /* Number of terms in the ORDER BY clause */ - int *aPermute; /* Mapping from ORDER BY terms to result set columns */ -#ifndef SQLITE_OMIT_EXPLAIN - int iSub1; /* EQP id of left-hand query */ - int iSub2; /* EQP id of right-hand query */ -#endif - - assert( p->pOrderBy!=0 ); - assert( pKeyDup==0 ); /* "Managed" code needs this. Ticket #3382. */ - db = pParse->db; - v = pParse->pVdbe; - assert( v!=0 ); /* Already thrown the error if VDBE alloc failed */ - labelEnd = sqlite3VdbeMakeLabel(v); - labelCmpr = sqlite3VdbeMakeLabel(v); - - - /* Patch up the ORDER BY clause - */ - op = p->op; - pPrior = p->pPrior; - assert( pPrior->pOrderBy==0 ); - pOrderBy = p->pOrderBy; - assert( pOrderBy ); - nOrderBy = pOrderBy->nExpr; - - /* For operators other than UNION ALL we have to make sure that - ** the ORDER BY clause covers every term of the result set. Add - ** terms to the ORDER BY clause as necessary. - */ - if( op!=TK_ALL ){ - for(i=1; db->mallocFailed==0 && i<=p->pEList->nExpr; i++){ - struct ExprList_item *pItem; - for(j=0, pItem=pOrderBy->a; jiCol>0 ); - if( pItem->iCol==i ) break; - } - if( j==nOrderBy ){ - Expr *pNew = sqlite3Expr(db, TK_INTEGER, 0); - if( pNew==0 ) return SQLITE_NOMEM; - pNew->flags |= EP_IntValue; - pNew->u.iValue = i; - pOrderBy = sqlite3ExprListAppend(pParse, pOrderBy, pNew); - pOrderBy->a[nOrderBy++].iCol = (u16)i; - } - } - } - - /* Compute the comparison permutation and keyinfo that is used with - ** the permutation used to determine if the next - ** row of results comes from selectA or selectB. Also add explicit - ** collations to the ORDER BY clause terms so that when the subqueries - ** to the right and the left are evaluated, they use the correct - ** collation. - */ - aPermute = sqlite3DbMallocRaw(db, sizeof(int)*nOrderBy); - if( aPermute ){ - struct ExprList_item *pItem; - for(i=0, pItem=pOrderBy->a; iiCol>0 && pItem->iCol<=p->pEList->nExpr ); - aPermute[i] = pItem->iCol - 1; - } - pKeyMerge = - sqlite3DbMallocRaw(db, sizeof(*pKeyMerge)+nOrderBy*(sizeof(CollSeq*)+1)); - if( pKeyMerge ){ - pKeyMerge->aSortOrder = (u8*)&pKeyMerge->aColl[nOrderBy]; - pKeyMerge->nField = (u16)nOrderBy; - pKeyMerge->enc = ENC(db); - for(i=0; ia[i].pExpr; - if( pTerm->flags & EP_ExpCollate ){ - pColl = pTerm->pColl; - }else{ - pColl = multiSelectCollSeq(pParse, p, aPermute[i]); - pTerm->flags |= EP_ExpCollate; - pTerm->pColl = pColl; - } - pKeyMerge->aColl[i] = pColl; - pKeyMerge->aSortOrder[i] = pOrderBy->a[i].sortOrder; - } - } - }else{ - pKeyMerge = 0; - } - - /* Reattach the ORDER BY clause to the query. - */ - p->pOrderBy = pOrderBy; - pPrior->pOrderBy = sqlite3ExprListDup(pParse->db, pOrderBy, 0); - - /* Allocate a range of temporary registers and the KeyInfo needed - ** for the logic that removes duplicate result rows when the - ** operator is UNION, EXCEPT, or INTERSECT (but not UNION ALL). - */ - if( op==TK_ALL ){ - regPrev = 0; - }else{ - int nExpr = p->pEList->nExpr; - assert( nOrderBy>=nExpr || db->mallocFailed ); - regPrev = sqlite3GetTempRange(pParse, nExpr+1); - sqlite3VdbeAddOp2(v, OP_Integer, 0, regPrev); - pKeyDup = sqlite3DbMallocZero(db, - sizeof(*pKeyDup) + nExpr*(sizeof(CollSeq*)+1) ); - if( pKeyDup ){ - pKeyDup->aSortOrder = (u8*)&pKeyDup->aColl[nExpr]; - pKeyDup->nField = (u16)nExpr; - pKeyDup->enc = ENC(db); - for(i=0; iaColl[i] = multiSelectCollSeq(pParse, p, i); - pKeyDup->aSortOrder[i] = 0; - } - } - } - - /* Separate the left and the right query from one another - */ - p->pPrior = 0; - sqlite3ResolveOrderGroupBy(pParse, p, p->pOrderBy, "ORDER"); - if( pPrior->pPrior==0 ){ - sqlite3ResolveOrderGroupBy(pParse, pPrior, pPrior->pOrderBy, "ORDER"); - } - - /* Compute the limit registers */ - computeLimitRegisters(pParse, p, labelEnd); - if( p->iLimit && op==TK_ALL ){ - regLimitA = ++pParse->nMem; - regLimitB = ++pParse->nMem; - sqlite3VdbeAddOp2(v, OP_Copy, p->iOffset ? p->iOffset+1 : p->iLimit, - regLimitA); - sqlite3VdbeAddOp2(v, OP_Copy, regLimitA, regLimitB); - }else{ - regLimitA = regLimitB = 0; - } - sqlite3ExprDelete(db, p->pLimit); - p->pLimit = 0; - sqlite3ExprDelete(db, p->pOffset); - p->pOffset = 0; - - regAddrA = ++pParse->nMem; - regEofA = ++pParse->nMem; - regAddrB = ++pParse->nMem; - regEofB = ++pParse->nMem; - regOutA = ++pParse->nMem; - regOutB = ++pParse->nMem; - sqlite3SelectDestInit(&destA, SRT_Coroutine, regAddrA); - sqlite3SelectDestInit(&destB, SRT_Coroutine, regAddrB); - - /* Jump past the various subroutines and coroutines to the main - ** merge loop - */ - j1 = sqlite3VdbeAddOp0(v, OP_Goto); - addrSelectA = sqlite3VdbeCurrentAddr(v); - - - /* Generate a coroutine to evaluate the SELECT statement to the - ** left of the compound operator - the "A" select. - */ - VdbeNoopComment((v, "Begin coroutine for left SELECT")); - pPrior->iLimit = regLimitA; - explainSetInteger(iSub1, pParse->iNextSelectId); - sqlite3Select(pParse, pPrior, &destA); - sqlite3VdbeAddOp2(v, OP_Integer, 1, regEofA); - sqlite3VdbeAddOp1(v, OP_Yield, regAddrA); - VdbeNoopComment((v, "End coroutine for left SELECT")); - - /* Generate a coroutine to evaluate the SELECT statement on - ** the right - the "B" select - */ - addrSelectB = sqlite3VdbeCurrentAddr(v); - VdbeNoopComment((v, "Begin coroutine for right SELECT")); - savedLimit = p->iLimit; - savedOffset = p->iOffset; - p->iLimit = regLimitB; - p->iOffset = 0; - explainSetInteger(iSub2, pParse->iNextSelectId); - sqlite3Select(pParse, p, &destB); - p->iLimit = savedLimit; - p->iOffset = savedOffset; - sqlite3VdbeAddOp2(v, OP_Integer, 1, regEofB); - sqlite3VdbeAddOp1(v, OP_Yield, regAddrB); - VdbeNoopComment((v, "End coroutine for right SELECT")); - - /* Generate a subroutine that outputs the current row of the A - ** select as the next output row of the compound select. - */ - VdbeNoopComment((v, "Output routine for A")); - addrOutA = generateOutputSubroutine(pParse, - p, &destA, pDest, regOutA, - regPrev, pKeyDup, P4_KEYINFO_HANDOFF, labelEnd); - - /* Generate a subroutine that outputs the current row of the B - ** select as the next output row of the compound select. - */ - if( op==TK_ALL || op==TK_UNION ){ - VdbeNoopComment((v, "Output routine for B")); - addrOutB = generateOutputSubroutine(pParse, - p, &destB, pDest, regOutB, - regPrev, pKeyDup, P4_KEYINFO_STATIC, labelEnd); - } - - /* Generate a subroutine to run when the results from select A - ** are exhausted and only data in select B remains. - */ - VdbeNoopComment((v, "eof-A subroutine")); - if( op==TK_EXCEPT || op==TK_INTERSECT ){ - addrEofA = sqlite3VdbeAddOp2(v, OP_Goto, 0, labelEnd); - }else{ - addrEofA = sqlite3VdbeAddOp2(v, OP_If, regEofB, labelEnd); - sqlite3VdbeAddOp2(v, OP_Gosub, regOutB, addrOutB); - sqlite3VdbeAddOp1(v, OP_Yield, regAddrB); - sqlite3VdbeAddOp2(v, OP_Goto, 0, addrEofA); - p->nSelectRow += pPrior->nSelectRow; - } - - /* Generate a subroutine to run when the results from select B - ** are exhausted and only data in select A remains. - */ - if( op==TK_INTERSECT ){ - addrEofB = addrEofA; - if( p->nSelectRow > pPrior->nSelectRow ) p->nSelectRow = pPrior->nSelectRow; - }else{ - VdbeNoopComment((v, "eof-B subroutine")); - addrEofB = sqlite3VdbeAddOp2(v, OP_If, regEofA, labelEnd); - sqlite3VdbeAddOp2(v, OP_Gosub, regOutA, addrOutA); - sqlite3VdbeAddOp1(v, OP_Yield, regAddrA); - sqlite3VdbeAddOp2(v, OP_Goto, 0, addrEofB); - } - - /* Generate code to handle the case of AB - */ - VdbeNoopComment((v, "A-gt-B subroutine")); - addrAgtB = sqlite3VdbeCurrentAddr(v); - if( op==TK_ALL || op==TK_UNION ){ - sqlite3VdbeAddOp2(v, OP_Gosub, regOutB, addrOutB); - } - sqlite3VdbeAddOp1(v, OP_Yield, regAddrB); - sqlite3VdbeAddOp2(v, OP_If, regEofB, addrEofB); - sqlite3VdbeAddOp2(v, OP_Goto, 0, labelCmpr); - - /* This code runs once to initialize everything. - */ - sqlite3VdbeJumpHere(v, j1); - sqlite3VdbeAddOp2(v, OP_Integer, 0, regEofA); - sqlite3VdbeAddOp2(v, OP_Integer, 0, regEofB); - sqlite3VdbeAddOp2(v, OP_Gosub, regAddrA, addrSelectA); - sqlite3VdbeAddOp2(v, OP_Gosub, regAddrB, addrSelectB); - sqlite3VdbeAddOp2(v, OP_If, regEofA, addrEofA); - sqlite3VdbeAddOp2(v, OP_If, regEofB, addrEofB); - - /* Implement the main merge loop - */ - sqlite3VdbeResolveLabel(v, labelCmpr); - sqlite3VdbeAddOp4(v, OP_Permutation, 0, 0, 0, (char*)aPermute, P4_INTARRAY); - sqlite3VdbeAddOp4(v, OP_Compare, destA.iMem, destB.iMem, nOrderBy, - (char*)pKeyMerge, P4_KEYINFO_HANDOFF); - sqlite3VdbeAddOp3(v, OP_Jump, addrAltB, addrAeqB, addrAgtB); - - /* Release temporary registers - */ - if( regPrev ){ - sqlite3ReleaseTempRange(pParse, regPrev, nOrderBy+1); - } - - /* Jump to the this point in order to terminate the query. - */ - sqlite3VdbeResolveLabel(v, labelEnd); - - /* Set the number of output columns - */ - if( pDest->eDest==SRT_Output ){ - Select *pFirst = pPrior; - while( pFirst->pPrior ) pFirst = pFirst->pPrior; - generateColumnNames(pParse, 0, pFirst->pEList); - } - - /* Reassembly the compound query so that it will be freed correctly - ** by the calling function */ - if( p->pPrior ){ - sqlite3SelectDelete(db, p->pPrior); - } - p->pPrior = pPrior; - - /*** TBD: Insert subroutine calls to close cursors on incomplete - **** subqueries ****/ - explainComposite(pParse, p->op, iSub1, iSub2, 0); - return SQLITE_OK; -} -#endif - -#if !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) -/* Forward Declarations */ -static void substExprList(sqlite3*, ExprList*, int, ExprList*); -static void substSelect(sqlite3*, Select *, int, ExprList *); - -/* -** Scan through the expression pExpr. Replace every reference to -** a column in table number iTable with a copy of the iColumn-th -** entry in pEList. (But leave references to the ROWID column -** unchanged.) -** -** This routine is part of the flattening procedure. A subquery -** whose result set is defined by pEList appears as entry in the -** FROM clause of a SELECT such that the VDBE cursor assigned to that -** FORM clause entry is iTable. This routine make the necessary -** changes to pExpr so that it refers directly to the source table -** of the subquery rather the result set of the subquery. -*/ -static Expr *substExpr( - sqlite3 *db, /* Report malloc errors to this connection */ - Expr *pExpr, /* Expr in which substitution occurs */ - int iTable, /* Table to be substituted */ - ExprList *pEList /* Substitute expressions */ -){ - if( pExpr==0 ) return 0; - if( pExpr->op==TK_COLUMN && pExpr->iTable==iTable ){ - if( pExpr->iColumn<0 ){ - pExpr->op = TK_NULL; - }else{ - Expr *pNew; - assert( pEList!=0 && pExpr->iColumnnExpr ); - assert( pExpr->pLeft==0 && pExpr->pRight==0 ); - pNew = sqlite3ExprDup(db, pEList->a[pExpr->iColumn].pExpr, 0); - if( pNew && pExpr->pColl ){ - pNew->pColl = pExpr->pColl; - } - sqlite3ExprDelete(db, pExpr); - pExpr = pNew; - } - }else{ - pExpr->pLeft = substExpr(db, pExpr->pLeft, iTable, pEList); - pExpr->pRight = substExpr(db, pExpr->pRight, iTable, pEList); - if( ExprHasProperty(pExpr, EP_xIsSelect) ){ - substSelect(db, pExpr->x.pSelect, iTable, pEList); - }else{ - substExprList(db, pExpr->x.pList, iTable, pEList); - } - } - return pExpr; -} -static void substExprList( - sqlite3 *db, /* Report malloc errors here */ - ExprList *pList, /* List to scan and in which to make substitutes */ - int iTable, /* Table to be substituted */ - ExprList *pEList /* Substitute values */ -){ - int i; - if( pList==0 ) return; - for(i=0; inExpr; i++){ - pList->a[i].pExpr = substExpr(db, pList->a[i].pExpr, iTable, pEList); - } -} -static void substSelect( - sqlite3 *db, /* Report malloc errors here */ - Select *p, /* SELECT statement in which to make substitutions */ - int iTable, /* Table to be replaced */ - ExprList *pEList /* Substitute values */ -){ - SrcList *pSrc; - struct SrcList_item *pItem; - int i; - if( !p ) return; - substExprList(db, p->pEList, iTable, pEList); - substExprList(db, p->pGroupBy, iTable, pEList); - substExprList(db, p->pOrderBy, iTable, pEList); - p->pHaving = substExpr(db, p->pHaving, iTable, pEList); - p->pWhere = substExpr(db, p->pWhere, iTable, pEList); - substSelect(db, p->pPrior, iTable, pEList); - pSrc = p->pSrc; - assert( pSrc ); /* Even for (SELECT 1) we have: pSrc!=0 but pSrc->nSrc==0 */ - if( ALWAYS(pSrc) ){ - for(i=pSrc->nSrc, pItem=pSrc->a; i>0; i--, pItem++){ - substSelect(db, pItem->pSelect, iTable, pEList); - } - } -} -#endif /* !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) */ - -#if !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) -/* -** This routine attempts to flatten subqueries in order to speed -** execution. It returns 1 if it makes changes and 0 if no flattening -** occurs. -** -** To understand the concept of flattening, consider the following -** query: -** -** SELECT a FROM (SELECT x+y AS a FROM t1 WHERE z<100) WHERE a>5 -** -** The default way of implementing this query is to execute the -** subquery first and store the results in a temporary table, then -** run the outer query on that temporary table. This requires two -** passes over the data. Furthermore, because the temporary table -** has no indices, the WHERE clause on the outer query cannot be -** optimized. -** -** This routine attempts to rewrite queries such as the above into -** a single flat select, like this: -** -** SELECT x+y AS a FROM t1 WHERE z<100 AND a>5 -** -** The code generated for this simpification gives the same result -** but only has to scan the data once. And because indices might -** exist on the table t1, a complete scan of the data might be -** avoided. -** -** Flattening is only attempted if all of the following are true: -** -** (1) The subquery and the outer query do not both use aggregates. -** -** (2) The subquery is not an aggregate or the outer query is not a join. -** -** (3) The subquery is not the right operand of a left outer join -** (Originally ticket #306. Strengthened by ticket #3300) -** -** (4) The subquery is not DISTINCT. -** -** (**) At one point restrictions (4) and (5) defined a subset of DISTINCT -** sub-queries that were excluded from this optimization. Restriction -** (4) has since been expanded to exclude all DISTINCT subqueries. -** -** (6) The subquery does not use aggregates or the outer query is not -** DISTINCT. -** -** (7) The subquery has a FROM clause. -** -** (8) The subquery does not use LIMIT or the outer query is not a join. -** -** (9) The subquery does not use LIMIT or the outer query does not use -** aggregates. -** -** (10) The subquery does not use aggregates or the outer query does not -** use LIMIT. -** -** (11) The subquery and the outer query do not both have ORDER BY clauses. -** -** (**) Not implemented. Subsumed into restriction (3). Was previously -** a separate restriction deriving from ticket #350. -** -** (13) The subquery and outer query do not both use LIMIT. -** -** (14) The subquery does not use OFFSET. -** -** (15) The outer query is not part of a compound select or the -** subquery does not have a LIMIT clause. -** (See ticket #2339 and ticket [02a8e81d44]). -** -** (16) The outer query is not an aggregate or the subquery does -** not contain ORDER BY. (Ticket #2942) This used to not matter -** until we introduced the group_concat() function. -** -** (17) The sub-query is not a compound select, or it is a UNION ALL -** compound clause made up entirely of non-aggregate queries, and -** the parent query: -** -** * is not itself part of a compound select, -** * is not an aggregate or DISTINCT query, and -** * has no other tables or sub-selects in the FROM clause. -** -** The parent and sub-query may contain WHERE clauses. Subject to -** rules (11), (13) and (14), they may also contain ORDER BY, -** LIMIT and OFFSET clauses. -** -** (18) If the sub-query is a compound select, then all terms of the -** ORDER by clause of the parent must be simple references to -** columns of the sub-query. -** -** (19) The subquery does not use LIMIT or the outer query does not -** have a WHERE clause. -** -** (20) If the sub-query is a compound select, then it must not use -** an ORDER BY clause. Ticket #3773. We could relax this constraint -** somewhat by saying that the terms of the ORDER BY clause must -** appear as unmodified result columns in the outer query. But -** have other optimizations in mind to deal with that case. -** -** (21) The subquery does not use LIMIT or the outer query is not -** DISTINCT. (See ticket [752e1646fc]). -** -** In this routine, the "p" parameter is a pointer to the outer query. -** The subquery is p->pSrc->a[iFrom]. isAgg is true if the outer query -** uses aggregates and subqueryIsAgg is true if the subquery uses aggregates. -** -** If flattening is not attempted, this routine is a no-op and returns 0. -** If flattening is attempted this routine returns 1. -** -** All of the expression analysis must occur on both the outer query and -** the subquery before this routine runs. -*/ -static int flattenSubquery( - Parse *pParse, /* Parsing context */ - Select *p, /* The parent or outer SELECT statement */ - int iFrom, /* Index in p->pSrc->a[] of the inner subquery */ - int isAgg, /* True if outer SELECT uses aggregate functions */ - int subqueryIsAgg /* True if the subquery uses aggregate functions */ -){ - const char *zSavedAuthContext = pParse->zAuthContext; - Select *pParent; - Select *pSub; /* The inner query or "subquery" */ - Select *pSub1; /* Pointer to the rightmost select in sub-query */ - SrcList *pSrc; /* The FROM clause of the outer query */ - SrcList *pSubSrc; /* The FROM clause of the subquery */ - ExprList *pList; /* The result set of the outer query */ - int iParent; /* VDBE cursor number of the pSub result set temp table */ - int i; /* Loop counter */ - Expr *pWhere; /* The WHERE clause */ - struct SrcList_item *pSubitem; /* The subquery */ - sqlite3 *db = pParse->db; - - /* Check to see if flattening is permitted. Return 0 if not. - */ - assert( p!=0 ); - assert( p->pPrior==0 ); /* Unable to flatten compound queries */ - if( db->flags & SQLITE_QueryFlattener ) return 0; - pSrc = p->pSrc; - assert( pSrc && iFrom>=0 && iFromnSrc ); - pSubitem = &pSrc->a[iFrom]; - iParent = pSubitem->iCursor; - pSub = pSubitem->pSelect; - assert( pSub!=0 ); - if( isAgg && subqueryIsAgg ) return 0; /* Restriction (1) */ - if( subqueryIsAgg && pSrc->nSrc>1 ) return 0; /* Restriction (2) */ - pSubSrc = pSub->pSrc; - assert( pSubSrc ); - /* Prior to version 3.1.2, when LIMIT and OFFSET had to be simple constants, - ** not arbitrary expresssions, we allowed some combining of LIMIT and OFFSET - ** because they could be computed at compile-time. But when LIMIT and OFFSET - ** became arbitrary expressions, we were forced to add restrictions (13) - ** and (14). */ - if( pSub->pLimit && p->pLimit ) return 0; /* Restriction (13) */ - if( pSub->pOffset ) return 0; /* Restriction (14) */ - if( p->pRightmost && pSub->pLimit ){ - return 0; /* Restriction (15) */ - } - if( pSubSrc->nSrc==0 ) return 0; /* Restriction (7) */ - if( pSub->selFlags & SF_Distinct ) return 0; /* Restriction (5) */ - if( pSub->pLimit && (pSrc->nSrc>1 || isAgg) ){ - return 0; /* Restrictions (8)(9) */ - } - if( (p->selFlags & SF_Distinct)!=0 && subqueryIsAgg ){ - return 0; /* Restriction (6) */ - } - if( p->pOrderBy && pSub->pOrderBy ){ - return 0; /* Restriction (11) */ - } - if( isAgg && pSub->pOrderBy ) return 0; /* Restriction (16) */ - if( pSub->pLimit && p->pWhere ) return 0; /* Restriction (19) */ - if( pSub->pLimit && (p->selFlags & SF_Distinct)!=0 ){ - return 0; /* Restriction (21) */ - } - - /* OBSOLETE COMMENT 1: - ** Restriction 3: If the subquery is a join, make sure the subquery is - ** not used as the right operand of an outer join. Examples of why this - ** is not allowed: - ** - ** t1 LEFT OUTER JOIN (t2 JOIN t3) - ** - ** If we flatten the above, we would get - ** - ** (t1 LEFT OUTER JOIN t2) JOIN t3 - ** - ** which is not at all the same thing. - ** - ** OBSOLETE COMMENT 2: - ** Restriction 12: If the subquery is the right operand of a left outer - ** join, make sure the subquery has no WHERE clause. - ** An examples of why this is not allowed: - ** - ** t1 LEFT OUTER JOIN (SELECT * FROM t2 WHERE t2.x>0) - ** - ** If we flatten the above, we would get - ** - ** (t1 LEFT OUTER JOIN t2) WHERE t2.x>0 - ** - ** But the t2.x>0 test will always fail on a NULL row of t2, which - ** effectively converts the OUTER JOIN into an INNER JOIN. - ** - ** THIS OVERRIDES OBSOLETE COMMENTS 1 AND 2 ABOVE: - ** Ticket #3300 shows that flattening the right term of a LEFT JOIN - ** is fraught with danger. Best to avoid the whole thing. If the - ** subquery is the right term of a LEFT JOIN, then do not flatten. - */ - if( (pSubitem->jointype & JT_OUTER)!=0 ){ - return 0; - } - - /* Restriction 17: If the sub-query is a compound SELECT, then it must - ** use only the UNION ALL operator. And none of the simple select queries - ** that make up the compound SELECT are allowed to be aggregate or distinct - ** queries. - */ - if( pSub->pPrior ){ - if( pSub->pOrderBy ){ - return 0; /* Restriction 20 */ - } - if( isAgg || (p->selFlags & SF_Distinct)!=0 || pSrc->nSrc!=1 ){ - return 0; - } - for(pSub1=pSub; pSub1; pSub1=pSub1->pPrior){ - testcase( (pSub1->selFlags & (SF_Distinct|SF_Aggregate))==SF_Distinct ); - testcase( (pSub1->selFlags & (SF_Distinct|SF_Aggregate))==SF_Aggregate ); - if( (pSub1->selFlags & (SF_Distinct|SF_Aggregate))!=0 - || (pSub1->pPrior && pSub1->op!=TK_ALL) - || NEVER(pSub1->pSrc==0) || pSub1->pSrc->nSrc!=1 - ){ - return 0; - } - } - - /* Restriction 18. */ - if( p->pOrderBy ){ - int ii; - for(ii=0; iipOrderBy->nExpr; ii++){ - if( p->pOrderBy->a[ii].iCol==0 ) return 0; - } - } - } - - /***** If we reach this point, flattening is permitted. *****/ - - /* Authorize the subquery */ - pParse->zAuthContext = pSubitem->zName; - sqlite3AuthCheck(pParse, SQLITE_SELECT, 0, 0, 0); - pParse->zAuthContext = zSavedAuthContext; - - /* If the sub-query is a compound SELECT statement, then (by restrictions - ** 17 and 18 above) it must be a UNION ALL and the parent query must - ** be of the form: - ** - ** SELECT FROM () - ** - ** followed by any ORDER BY, LIMIT and/or OFFSET clauses. This block - ** creates N-1 copies of the parent query without any ORDER BY, LIMIT or - ** OFFSET clauses and joins them to the left-hand-side of the original - ** using UNION ALL operators. In this case N is the number of simple - ** select statements in the compound sub-query. - ** - ** Example: - ** - ** SELECT a+1 FROM ( - ** SELECT x FROM tab - ** UNION ALL - ** SELECT y FROM tab - ** UNION ALL - ** SELECT abs(z*2) FROM tab2 - ** ) WHERE a!=5 ORDER BY 1 - ** - ** Transformed into: - ** - ** SELECT x+1 FROM tab WHERE x+1!=5 - ** UNION ALL - ** SELECT y+1 FROM tab WHERE y+1!=5 - ** UNION ALL - ** SELECT abs(z*2)+1 FROM tab2 WHERE abs(z*2)+1!=5 - ** ORDER BY 1 - ** - ** We call this the "compound-subquery flattening". - */ - for(pSub=pSub->pPrior; pSub; pSub=pSub->pPrior){ - Select *pNew; - ExprList *pOrderBy = p->pOrderBy; - Expr *pLimit = p->pLimit; - Select *pPrior = p->pPrior; - p->pOrderBy = 0; - p->pSrc = 0; - p->pPrior = 0; - p->pLimit = 0; - pNew = sqlite3SelectDup(db, p, 0); - p->pLimit = pLimit; - p->pOrderBy = pOrderBy; - p->pSrc = pSrc; - p->op = TK_ALL; - p->pRightmost = 0; - if( pNew==0 ){ - pNew = pPrior; - }else{ - pNew->pPrior = pPrior; - pNew->pRightmost = 0; - } - p->pPrior = pNew; - if( db->mallocFailed ) return 1; - } - - /* Begin flattening the iFrom-th entry of the FROM clause - ** in the outer query. - */ - pSub = pSub1 = pSubitem->pSelect; - - /* Delete the transient table structure associated with the - ** subquery - */ - sqlite3DbFree(db, pSubitem->zDatabase); - sqlite3DbFree(db, pSubitem->zName); - sqlite3DbFree(db, pSubitem->zAlias); - pSubitem->zDatabase = 0; - pSubitem->zName = 0; - pSubitem->zAlias = 0; - pSubitem->pSelect = 0; - - /* Defer deleting the Table object associated with the - ** subquery until code generation is - ** complete, since there may still exist Expr.pTab entries that - ** refer to the subquery even after flattening. Ticket #3346. - ** - ** pSubitem->pTab is always non-NULL by test restrictions and tests above. - */ - if( ALWAYS(pSubitem->pTab!=0) ){ - Table *pTabToDel = pSubitem->pTab; - if( pTabToDel->nRef==1 ){ - Parse *pToplevel = sqlite3ParseToplevel(pParse); - pTabToDel->pNextZombie = pToplevel->pZombieTab; - pToplevel->pZombieTab = pTabToDel; - }else{ - pTabToDel->nRef--; - } - pSubitem->pTab = 0; - } - - /* The following loop runs once for each term in a compound-subquery - ** flattening (as described above). If we are doing a different kind - ** of flattening - a flattening other than a compound-subquery flattening - - ** then this loop only runs once. - ** - ** This loop moves all of the FROM elements of the subquery into the - ** the FROM clause of the outer query. Before doing this, remember - ** the cursor number for the original outer query FROM element in - ** iParent. The iParent cursor will never be used. Subsequent code - ** will scan expressions looking for iParent references and replace - ** those references with expressions that resolve to the subquery FROM - ** elements we are now copying in. - */ - for(pParent=p; pParent; pParent=pParent->pPrior, pSub=pSub->pPrior){ - int nSubSrc; - u8 jointype = 0; - pSubSrc = pSub->pSrc; /* FROM clause of subquery */ - nSubSrc = pSubSrc->nSrc; /* Number of terms in subquery FROM clause */ - pSrc = pParent->pSrc; /* FROM clause of the outer query */ - - if( pSrc ){ - assert( pParent==p ); /* First time through the loop */ - jointype = pSubitem->jointype; - }else{ - assert( pParent!=p ); /* 2nd and subsequent times through the loop */ - pSrc = pParent->pSrc = sqlite3SrcListAppend(db, 0, 0, 0); - if( pSrc==0 ){ - assert( db->mallocFailed ); - break; - } - } - - /* The subquery uses a single slot of the FROM clause of the outer - ** query. If the subquery has more than one element in its FROM clause, - ** then expand the outer query to make space for it to hold all elements - ** of the subquery. - ** - ** Example: - ** - ** SELECT * FROM tabA, (SELECT * FROM sub1, sub2), tabB; - ** - ** The outer query has 3 slots in its FROM clause. One slot of the - ** outer query (the middle slot) is used by the subquery. The next - ** block of code will expand the out query to 4 slots. The middle - ** slot is expanded to two slots in order to make space for the - ** two elements in the FROM clause of the subquery. - */ - if( nSubSrc>1 ){ - pParent->pSrc = pSrc = sqlite3SrcListEnlarge(db, pSrc, nSubSrc-1,iFrom+1); - if( db->mallocFailed ){ - break; - } - } - - /* Transfer the FROM clause terms from the subquery into the - ** outer query. - */ - for(i=0; ia[i+iFrom].pUsing); - pSrc->a[i+iFrom] = pSubSrc->a[i]; - memset(&pSubSrc->a[i], 0, sizeof(pSubSrc->a[i])); - } - pSrc->a[iFrom].jointype = jointype; - - /* Now begin substituting subquery result set expressions for - ** references to the iParent in the outer query. - ** - ** Example: - ** - ** SELECT a+5, b*10 FROM (SELECT x*3 AS a, y+10 AS b FROM t1) WHERE a>b; - ** \ \_____________ subquery __________/ / - ** \_____________________ outer query ______________________________/ - ** - ** We look at every expression in the outer query and every place we see - ** "a" we substitute "x*3" and every place we see "b" we substitute "y+10". - */ - pList = pParent->pEList; - for(i=0; inExpr; i++){ - if( pList->a[i].zName==0 ){ - const char *zSpan = pList->a[i].zSpan; - if( ALWAYS(zSpan) ){ - pList->a[i].zName = sqlite3DbStrDup(db, zSpan); - } - } - } - substExprList(db, pParent->pEList, iParent, pSub->pEList); - if( isAgg ){ - substExprList(db, pParent->pGroupBy, iParent, pSub->pEList); - pParent->pHaving = substExpr(db, pParent->pHaving, iParent, pSub->pEList); - } - if( pSub->pOrderBy ){ - assert( pParent->pOrderBy==0 ); - pParent->pOrderBy = pSub->pOrderBy; - pSub->pOrderBy = 0; - }else if( pParent->pOrderBy ){ - substExprList(db, pParent->pOrderBy, iParent, pSub->pEList); - } - if( pSub->pWhere ){ - pWhere = sqlite3ExprDup(db, pSub->pWhere, 0); - }else{ - pWhere = 0; - } - if( subqueryIsAgg ){ - assert( pParent->pHaving==0 ); - pParent->pHaving = pParent->pWhere; - pParent->pWhere = pWhere; - pParent->pHaving = substExpr(db, pParent->pHaving, iParent, pSub->pEList); - pParent->pHaving = sqlite3ExprAnd(db, pParent->pHaving, - sqlite3ExprDup(db, pSub->pHaving, 0)); - assert( pParent->pGroupBy==0 ); - pParent->pGroupBy = sqlite3ExprListDup(db, pSub->pGroupBy, 0); - }else{ - pParent->pWhere = substExpr(db, pParent->pWhere, iParent, pSub->pEList); - pParent->pWhere = sqlite3ExprAnd(db, pParent->pWhere, pWhere); - } - - /* The flattened query is distinct if either the inner or the - ** outer query is distinct. - */ - pParent->selFlags |= pSub->selFlags & SF_Distinct; - - /* - ** SELECT ... FROM (SELECT ... LIMIT a OFFSET b) LIMIT x OFFSET y; - ** - ** One is tempted to try to add a and b to combine the limits. But this - ** does not work if either limit is negative. - */ - if( pSub->pLimit ){ - pParent->pLimit = pSub->pLimit; - pSub->pLimit = 0; - } - } - - /* Finially, delete what is left of the subquery and return - ** success. - */ - sqlite3SelectDelete(db, pSub1); - - return 1; -} -#endif /* !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) */ - -/* -** Analyze the SELECT statement passed as an argument to see if it -** is a min() or max() query. Return WHERE_ORDERBY_MIN or WHERE_ORDERBY_MAX if -** it is, or 0 otherwise. At present, a query is considered to be -** a min()/max() query if: -** -** 1. There is a single object in the FROM clause. -** -** 2. There is a single expression in the result set, and it is -** either min(x) or max(x), where x is a column reference. -*/ -static u8 minMaxQuery(Select *p){ - Expr *pExpr; - ExprList *pEList = p->pEList; - - if( pEList->nExpr!=1 ) return WHERE_ORDERBY_NORMAL; - pExpr = pEList->a[0].pExpr; - if( pExpr->op!=TK_AGG_FUNCTION ) return 0; - if( NEVER(ExprHasProperty(pExpr, EP_xIsSelect)) ) return 0; - pEList = pExpr->x.pList; - if( pEList==0 || pEList->nExpr!=1 ) return 0; - if( pEList->a[0].pExpr->op!=TK_AGG_COLUMN ) return WHERE_ORDERBY_NORMAL; - assert( !ExprHasProperty(pExpr, EP_IntValue) ); - if( sqlite3StrICmp(pExpr->u.zToken,"min")==0 ){ - return WHERE_ORDERBY_MIN; - }else if( sqlite3StrICmp(pExpr->u.zToken,"max")==0 ){ - return WHERE_ORDERBY_MAX; - } - return WHERE_ORDERBY_NORMAL; -} - -/* -** The select statement passed as the first argument is an aggregate query. -** The second argment is the associated aggregate-info object. This -** function tests if the SELECT is of the form: -** -** SELECT count(*) FROM -** -** where table is a database table, not a sub-select or view. If the query -** does match this pattern, then a pointer to the Table object representing -** is returned. Otherwise, 0 is returned. -*/ -static Table *isSimpleCount(Select *p, AggInfo *pAggInfo){ - Table *pTab; - Expr *pExpr; - - assert( !p->pGroupBy ); - - if( p->pWhere || p->pEList->nExpr!=1 - || p->pSrc->nSrc!=1 || p->pSrc->a[0].pSelect - ){ - return 0; - } - pTab = p->pSrc->a[0].pTab; - pExpr = p->pEList->a[0].pExpr; - assert( pTab && !pTab->pSelect && pExpr ); - - if( IsVirtual(pTab) ) return 0; - if( pExpr->op!=TK_AGG_FUNCTION ) return 0; - if( (pAggInfo->aFunc[0].pFunc->flags&SQLITE_FUNC_COUNT)==0 ) return 0; - if( pExpr->flags&EP_Distinct ) return 0; - - return pTab; -} - -/* -** If the source-list item passed as an argument was augmented with an -** INDEXED BY clause, then try to locate the specified index. If there -** was such a clause and the named index cannot be found, return -** SQLITE_ERROR and leave an error in pParse. Otherwise, populate -** pFrom->pIndex and return SQLITE_OK. -*/ -int sqlite3IndexedByLookup(Parse *pParse, struct SrcList_item *pFrom){ - if( pFrom->pTab && pFrom->zIndex ){ - Table *pTab = pFrom->pTab; - char *zIndex = pFrom->zIndex; - Index *pIdx; - for(pIdx=pTab->pIndex; - pIdx && sqlite3StrICmp(pIdx->zName, zIndex); - pIdx=pIdx->pNext - ); - if( !pIdx ){ - sqlite3ErrorMsg(pParse, "no such index: %s", zIndex, 0); - pParse->checkSchema = 1; - return SQLITE_ERROR; - } - pFrom->pIndex = pIdx; - } - return SQLITE_OK; -} - -/* -** This routine is a Walker callback for "expanding" a SELECT statement. -** "Expanding" means to do the following: -** -** (1) Make sure VDBE cursor numbers have been assigned to every -** element of the FROM clause. -** -** (2) Fill in the pTabList->a[].pTab fields in the SrcList that -** defines FROM clause. When views appear in the FROM clause, -** fill pTabList->a[].pSelect with a copy of the SELECT statement -** that implements the view. A copy is made of the view's SELECT -** statement so that we can freely modify or delete that statement -** without worrying about messing up the presistent representation -** of the view. -** -** (3) Add terms to the WHERE clause to accomodate the NATURAL keyword -** on joins and the ON and USING clause of joins. -** -** (4) Scan the list of columns in the result set (pEList) looking -** for instances of the "*" operator or the TABLE.* operator. -** If found, expand each "*" to be every column in every table -** and TABLE.* to be every column in TABLE. -** -*/ -static int selectExpander(Walker *pWalker, Select *p){ - Parse *pParse = pWalker->pParse; - int i, j, k; - SrcList *pTabList; - ExprList *pEList; - struct SrcList_item *pFrom; - sqlite3 *db = pParse->db; - - if( db->mallocFailed ){ - return WRC_Abort; - } - if( NEVER(p->pSrc==0) || (p->selFlags & SF_Expanded)!=0 ){ - return WRC_Prune; - } - p->selFlags |= SF_Expanded; - pTabList = p->pSrc; - pEList = p->pEList; - - /* Make sure cursor numbers have been assigned to all entries in - ** the FROM clause of the SELECT statement. - */ - sqlite3SrcListAssignCursors(pParse, pTabList); - - /* Look up every table named in the FROM clause of the select. If - ** an entry of the FROM clause is a subquery instead of a table or view, - ** then create a transient table structure to describe the subquery. - */ - for(i=0, pFrom=pTabList->a; inSrc; i++, pFrom++){ - Table *pTab; - if( pFrom->pTab!=0 ){ - /* This statement has already been prepared. There is no need - ** to go further. */ - assert( i==0 ); - return WRC_Prune; - } - if( pFrom->zName==0 ){ -#ifndef SQLITE_OMIT_SUBQUERY - Select *pSel = pFrom->pSelect; - /* A sub-query in the FROM clause of a SELECT */ - assert( pSel!=0 ); - assert( pFrom->pTab==0 ); - sqlite3WalkSelect(pWalker, pSel); - pFrom->pTab = pTab = sqlite3DbMallocZero(db, sizeof(Table)); - if( pTab==0 ) return WRC_Abort; - pTab->nRef = 1; - pTab->zName = sqlite3MPrintf(db, "sqlite_subquery_%p_", (void*)pTab); - while( pSel->pPrior ){ pSel = pSel->pPrior; } - selectColumnsFromExprList(pParse, pSel->pEList, &pTab->nCol, &pTab->aCol); - pTab->iPKey = -1; - pTab->nRowEst = 1000000; - pTab->tabFlags |= TF_Ephemeral; -#endif - }else{ - /* An ordinary table or view name in the FROM clause */ - assert( pFrom->pTab==0 ); - pFrom->pTab = pTab = - sqlite3LocateTable(pParse,0,pFrom->zName,pFrom->zDatabase); - if( pTab==0 ) return WRC_Abort; - pTab->nRef++; -#if !defined(SQLITE_OMIT_VIEW) || !defined (SQLITE_OMIT_VIRTUALTABLE) - if( pTab->pSelect || IsVirtual(pTab) ){ - /* We reach here if the named table is a really a view */ - if( sqlite3ViewGetColumnNames(pParse, pTab) ) return WRC_Abort; - assert( pFrom->pSelect==0 ); - pFrom->pSelect = sqlite3SelectDup(db, pTab->pSelect, 0); - sqlite3WalkSelect(pWalker, pFrom->pSelect); - } -#endif - } - - /* Locate the index named by the INDEXED BY clause, if any. */ - if( sqlite3IndexedByLookup(pParse, pFrom) ){ - return WRC_Abort; - } - } - - /* Process NATURAL keywords, and ON and USING clauses of joins. - */ - if( db->mallocFailed || sqliteProcessJoin(pParse, p) ){ - return WRC_Abort; - } - - /* For every "*" that occurs in the column list, insert the names of - ** all columns in all tables. And for every TABLE.* insert the names - ** of all columns in TABLE. The parser inserted a special expression - ** with the TK_ALL operator for each "*" that it found in the column list. - ** The following code just has to locate the TK_ALL expressions and expand - ** each one to the list of all columns in all tables. - ** - ** The first loop just checks to see if there are any "*" operators - ** that need expanding. - */ - for(k=0; knExpr; k++){ - Expr *pE = pEList->a[k].pExpr; - if( pE->op==TK_ALL ) break; - assert( pE->op!=TK_DOT || pE->pRight!=0 ); - assert( pE->op!=TK_DOT || (pE->pLeft!=0 && pE->pLeft->op==TK_ID) ); - if( pE->op==TK_DOT && pE->pRight->op==TK_ALL ) break; - } - if( knExpr ){ - /* - ** If we get here it means the result set contains one or more "*" - ** operators that need to be expanded. Loop through each expression - ** in the result set and expand them one by one. - */ - struct ExprList_item *a = pEList->a; - ExprList *pNew = 0; - int flags = pParse->db->flags; - int longNames = (flags & SQLITE_FullColNames)!=0 - && (flags & SQLITE_ShortColNames)==0; - - for(k=0; knExpr; k++){ - Expr *pE = a[k].pExpr; - assert( pE->op!=TK_DOT || pE->pRight!=0 ); - if( pE->op!=TK_ALL && (pE->op!=TK_DOT || pE->pRight->op!=TK_ALL) ){ - /* This particular expression does not need to be expanded. - */ - pNew = sqlite3ExprListAppend(pParse, pNew, a[k].pExpr); - if( pNew ){ - pNew->a[pNew->nExpr-1].zName = a[k].zName; - pNew->a[pNew->nExpr-1].zSpan = a[k].zSpan; - a[k].zName = 0; - a[k].zSpan = 0; - } - a[k].pExpr = 0; - }else{ - /* This expression is a "*" or a "TABLE.*" and needs to be - ** expanded. */ - int tableSeen = 0; /* Set to 1 when TABLE matches */ - char *zTName; /* text of name of TABLE */ - if( pE->op==TK_DOT ){ - assert( pE->pLeft!=0 ); - assert( !ExprHasProperty(pE->pLeft, EP_IntValue) ); - zTName = pE->pLeft->u.zToken; - }else{ - zTName = 0; - } - for(i=0, pFrom=pTabList->a; inSrc; i++, pFrom++){ - Table *pTab = pFrom->pTab; - char *zTabName = pFrom->zAlias; - if( zTabName==0 ){ - zTabName = pTab->zName; - } - if( db->mallocFailed ) break; - if( zTName && sqlite3StrICmp(zTName, zTabName)!=0 ){ - continue; - } - tableSeen = 1; - for(j=0; jnCol; j++){ - Expr *pExpr, *pRight; - char *zName = pTab->aCol[j].zName; - char *zColname; /* The computed column name */ - char *zToFree; /* Malloced string that needs to be freed */ - Token sColname; /* Computed column name as a token */ - - /* If a column is marked as 'hidden' (currently only possible - ** for virtual tables), do not include it in the expanded - ** result-set list. - */ - if( IsHiddenColumn(&pTab->aCol[j]) ){ - assert(IsVirtual(pTab)); - continue; - } - - if( i>0 && zTName==0 ){ - if( (pFrom->jointype & JT_NATURAL)!=0 - && tableAndColumnIndex(pTabList, i, zName, 0, 0) - ){ - /* In a NATURAL join, omit the join columns from the - ** table to the right of the join */ - continue; - } - if( sqlite3IdListIndex(pFrom->pUsing, zName)>=0 ){ - /* In a join with a USING clause, omit columns in the - ** using clause from the table on the right. */ - continue; - } - } - pRight = sqlite3Expr(db, TK_ID, zName); - zColname = zName; - zToFree = 0; - if( longNames || pTabList->nSrc>1 ){ - Expr *pLeft; - pLeft = sqlite3Expr(db, TK_ID, zTabName); - pExpr = sqlite3PExpr(pParse, TK_DOT, pLeft, pRight, 0); - if( longNames ){ - zColname = sqlite3MPrintf(db, "%s.%s", zTabName, zName); - zToFree = zColname; - } - }else{ - pExpr = pRight; - } - pNew = sqlite3ExprListAppend(pParse, pNew, pExpr); - sColname.z = zColname; - sColname.n = sqlite3Strlen30(zColname); - sqlite3ExprListSetName(pParse, pNew, &sColname, 0); - sqlite3DbFree(db, zToFree); - } - } - if( !tableSeen ){ - if( zTName ){ - sqlite3ErrorMsg(pParse, "no such table: %s", zTName); - }else{ - sqlite3ErrorMsg(pParse, "no tables specified"); - } - } - } - } - sqlite3ExprListDelete(db, pEList); - p->pEList = pNew; - } -#if SQLITE_MAX_COLUMN - if( p->pEList && p->pEList->nExpr>db->aLimit[SQLITE_LIMIT_COLUMN] ){ - sqlite3ErrorMsg(pParse, "too many columns in result set"); - } -#endif - return WRC_Continue; -} - -/* -** No-op routine for the parse-tree walker. -** -** When this routine is the Walker.xExprCallback then expression trees -** are walked without any actions being taken at each node. Presumably, -** when this routine is used for Walker.xExprCallback then -** Walker.xSelectCallback is set to do something useful for every -** subquery in the parser tree. -*/ -static int exprWalkNoop(Walker *NotUsed, Expr *NotUsed2){ - UNUSED_PARAMETER2(NotUsed, NotUsed2); - return WRC_Continue; -} - -/* -** This routine "expands" a SELECT statement and all of its subqueries. -** For additional information on what it means to "expand" a SELECT -** statement, see the comment on the selectExpand worker callback above. -** -** Expanding a SELECT statement is the first step in processing a -** SELECT statement. The SELECT statement must be expanded before -** name resolution is performed. -** -** If anything goes wrong, an error message is written into pParse. -** The calling function can detect the problem by looking at pParse->nErr -** and/or pParse->db->mallocFailed. -*/ -static void sqlite3SelectExpand(Parse *pParse, Select *pSelect){ - Walker w; - w.xSelectCallback = selectExpander; - w.xExprCallback = exprWalkNoop; - w.pParse = pParse; - sqlite3WalkSelect(&w, pSelect); -} - - -#ifndef SQLITE_OMIT_SUBQUERY -/* -** This is a Walker.xSelectCallback callback for the sqlite3SelectTypeInfo() -** interface. -** -** For each FROM-clause subquery, add Column.zType and Column.zColl -** information to the Table structure that represents the result set -** of that subquery. -** -** The Table structure that represents the result set was constructed -** by selectExpander() but the type and collation information was omitted -** at that point because identifiers had not yet been resolved. This -** routine is called after identifier resolution. -*/ -static int selectAddSubqueryTypeInfo(Walker *pWalker, Select *p){ - Parse *pParse; - int i; - SrcList *pTabList; - struct SrcList_item *pFrom; - - assert( p->selFlags & SF_Resolved ); - if( (p->selFlags & SF_HasTypeInfo)==0 ){ - p->selFlags |= SF_HasTypeInfo; - pParse = pWalker->pParse; - pTabList = p->pSrc; - for(i=0, pFrom=pTabList->a; inSrc; i++, pFrom++){ - Table *pTab = pFrom->pTab; - if( ALWAYS(pTab!=0) && (pTab->tabFlags & TF_Ephemeral)!=0 ){ - /* A sub-query in the FROM clause of a SELECT */ - Select *pSel = pFrom->pSelect; - assert( pSel ); - while( pSel->pPrior ) pSel = pSel->pPrior; - selectAddColumnTypeAndCollation(pParse, pTab->nCol, pTab->aCol, pSel); - } - } - } - return WRC_Continue; -} -#endif - - -/* -** This routine adds datatype and collating sequence information to -** the Table structures of all FROM-clause subqueries in a -** SELECT statement. -** -** Use this routine after name resolution. -*/ -static void sqlite3SelectAddTypeInfo(Parse *pParse, Select *pSelect){ -#ifndef SQLITE_OMIT_SUBQUERY - Walker w; - w.xSelectCallback = selectAddSubqueryTypeInfo; - w.xExprCallback = exprWalkNoop; - w.pParse = pParse; - sqlite3WalkSelect(&w, pSelect); -#endif -} - - -/* -** This routine sets of a SELECT statement for processing. The -** following is accomplished: -** -** * VDBE Cursor numbers are assigned to all FROM-clause terms. -** * Ephemeral Table objects are created for all FROM-clause subqueries. -** * ON and USING clauses are shifted into WHERE statements -** * Wildcards "*" and "TABLE.*" in result sets are expanded. -** * Identifiers in expression are matched to tables. -** -** This routine acts recursively on all subqueries within the SELECT. -*/ -void sqlite3SelectPrep( - Parse *pParse, /* The parser context */ - Select *p, /* The SELECT statement being coded. */ - NameContext *pOuterNC /* Name context for container */ -){ - sqlite3 *db; - if( NEVER(p==0) ) return; - db = pParse->db; - if( p->selFlags & SF_HasTypeInfo ) return; - sqlite3SelectExpand(pParse, p); - if( pParse->nErr || db->mallocFailed ) return; - sqlite3ResolveSelectNames(pParse, p, pOuterNC); - if( pParse->nErr || db->mallocFailed ) return; - sqlite3SelectAddTypeInfo(pParse, p); -} - -/* -** Reset the aggregate accumulator. -** -** The aggregate accumulator is a set of memory cells that hold -** intermediate results while calculating an aggregate. This -** routine simply stores NULLs in all of those memory cells. -*/ -static void resetAccumulator(Parse *pParse, AggInfo *pAggInfo){ - Vdbe *v = pParse->pVdbe; - int i; - struct AggInfo_func *pFunc; - if( pAggInfo->nFunc+pAggInfo->nColumn==0 ){ - return; - } - for(i=0; inColumn; i++){ - sqlite3VdbeAddOp2(v, OP_Null, 0, pAggInfo->aCol[i].iMem); - } - for(pFunc=pAggInfo->aFunc, i=0; inFunc; i++, pFunc++){ - sqlite3VdbeAddOp2(v, OP_Null, 0, pFunc->iMem); - if( pFunc->iDistinct>=0 ){ - Expr *pE = pFunc->pExpr; - assert( !ExprHasProperty(pE, EP_xIsSelect) ); - if( pE->x.pList==0 || pE->x.pList->nExpr!=1 ){ - sqlite3ErrorMsg(pParse, "DISTINCT aggregates must have exactly one " - "argument"); - pFunc->iDistinct = -1; - }else{ - KeyInfo *pKeyInfo = keyInfoFromExprList(pParse, pE->x.pList); - sqlite3VdbeAddOp4(v, OP_OpenEphemeral, pFunc->iDistinct, 0, 0, - (char*)pKeyInfo, P4_KEYINFO_HANDOFF); - } - } - } -} - -/* -** Invoke the OP_AggFinalize opcode for every aggregate function -** in the AggInfo structure. -*/ -static void finalizeAggFunctions(Parse *pParse, AggInfo *pAggInfo){ - Vdbe *v = pParse->pVdbe; - int i; - struct AggInfo_func *pF; - for(i=0, pF=pAggInfo->aFunc; inFunc; i++, pF++){ - ExprList *pList = pF->pExpr->x.pList; - assert( !ExprHasProperty(pF->pExpr, EP_xIsSelect) ); - sqlite3VdbeAddOp4(v, OP_AggFinal, pF->iMem, pList ? pList->nExpr : 0, 0, - (void*)pF->pFunc, P4_FUNCDEF); - } -} - -/* -** Update the accumulator memory cells for an aggregate based on -** the current cursor position. -*/ -static void updateAccumulator(Parse *pParse, AggInfo *pAggInfo){ - Vdbe *v = pParse->pVdbe; - int i; - struct AggInfo_func *pF; - struct AggInfo_col *pC; - - pAggInfo->directMode = 1; - sqlite3ExprCacheClear(pParse); - for(i=0, pF=pAggInfo->aFunc; inFunc; i++, pF++){ - int nArg; - int addrNext = 0; - int regAgg; - ExprList *pList = pF->pExpr->x.pList; - assert( !ExprHasProperty(pF->pExpr, EP_xIsSelect) ); - if( pList ){ - nArg = pList->nExpr; - regAgg = sqlite3GetTempRange(pParse, nArg); - sqlite3ExprCodeExprList(pParse, pList, regAgg, 1); - }else{ - nArg = 0; - regAgg = 0; - } - if( pF->iDistinct>=0 ){ - addrNext = sqlite3VdbeMakeLabel(v); - assert( nArg==1 ); - codeDistinct(pParse, pF->iDistinct, addrNext, 1, regAgg); - } - if( pF->pFunc->flags & SQLITE_FUNC_NEEDCOLL ){ - CollSeq *pColl = 0; - struct ExprList_item *pItem; - int j; - assert( pList!=0 ); /* pList!=0 if pF->pFunc has NEEDCOLL */ - for(j=0, pItem=pList->a; !pColl && jpExpr); - } - if( !pColl ){ - pColl = pParse->db->pDfltColl; - } - sqlite3VdbeAddOp4(v, OP_CollSeq, 0, 0, 0, (char *)pColl, P4_COLLSEQ); - } - sqlite3VdbeAddOp4(v, OP_AggStep, 0, regAgg, pF->iMem, - (void*)pF->pFunc, P4_FUNCDEF); - sqlite3VdbeChangeP5(v, (u8)nArg); - sqlite3ExprCacheAffinityChange(pParse, regAgg, nArg); - sqlite3ReleaseTempRange(pParse, regAgg, nArg); - if( addrNext ){ - sqlite3VdbeResolveLabel(v, addrNext); - sqlite3ExprCacheClear(pParse); - } - } - - /* Before populating the accumulator registers, clear the column cache. - ** Otherwise, if any of the required column values are already present - ** in registers, sqlite3ExprCode() may use OP_SCopy to copy the value - ** to pC->iMem. But by the time the value is used, the original register - ** may have been used, invalidating the underlying buffer holding the - ** text or blob value. See ticket [883034dcb5]. - ** - ** Another solution would be to change the OP_SCopy used to copy cached - ** values to an OP_Copy. - */ - sqlite3ExprCacheClear(pParse); - for(i=0, pC=pAggInfo->aCol; inAccumulator; i++, pC++){ - sqlite3ExprCode(pParse, pC->pExpr, pC->iMem); - } - pAggInfo->directMode = 0; - sqlite3ExprCacheClear(pParse); -} - -/* -** Add a single OP_Explain instruction to the VDBE to explain a simple -** count(*) query ("SELECT count(*) FROM pTab"). -*/ -#ifndef SQLITE_OMIT_EXPLAIN -static void explainSimpleCount( - Parse *pParse, /* Parse context */ - Table *pTab, /* Table being queried */ - Index *pIdx /* Index used to optimize scan, or NULL */ -){ - if( pParse->explain==2 ){ - char *zEqp = sqlite3MPrintf(pParse->db, "SCAN TABLE %s %s%s(~%d rows)", - pTab->zName, - pIdx ? "USING COVERING INDEX " : "", - pIdx ? pIdx->zName : "", - pTab->nRowEst - ); - sqlite3VdbeAddOp4( - pParse->pVdbe, OP_Explain, pParse->iSelectId, 0, 0, zEqp, P4_DYNAMIC - ); - } -} -#else -# define explainSimpleCount(a,b,c) -#endif - -/* -** Generate code for the SELECT statement given in the p argument. -** -** The results are distributed in various ways depending on the -** contents of the SelectDest structure pointed to by argument pDest -** as follows: -** -** pDest->eDest Result -** ------------ ------------------------------------------- -** SRT_Output Generate a row of output (using the OP_ResultRow -** opcode) for each row in the result set. -** -** SRT_Mem Only valid if the result is a single column. -** Store the first column of the first result row -** in register pDest->iParm then abandon the rest -** of the query. This destination implies "LIMIT 1". -** -** SRT_Set The result must be a single column. Store each -** row of result as the key in table pDest->iParm. -** Apply the affinity pDest->affinity before storing -** results. Used to implement "IN (SELECT ...)". -** -** SRT_Union Store results as a key in a temporary table pDest->iParm. -** -** SRT_Except Remove results from the temporary table pDest->iParm. -** -** SRT_Table Store results in temporary table pDest->iParm. -** This is like SRT_EphemTab except that the table -** is assumed to already be open. -** -** SRT_EphemTab Create an temporary table pDest->iParm and store -** the result there. The cursor is left open after -** returning. This is like SRT_Table except that -** this destination uses OP_OpenEphemeral to create -** the table first. -** -** SRT_Coroutine Generate a co-routine that returns a new row of -** results each time it is invoked. The entry point -** of the co-routine is stored in register pDest->iParm. -** -** SRT_Exists Store a 1 in memory cell pDest->iParm if the result -** set is not empty. -** -** SRT_Discard Throw the results away. This is used by SELECT -** statements within triggers whose only purpose is -** the side-effects of functions. -** -** This routine returns the number of errors. If any errors are -** encountered, then an appropriate error message is left in -** pParse->zErrMsg. -** -** This routine does NOT free the Select structure passed in. The -** calling function needs to do that. -*/ -int sqlite3Select( - Parse *pParse, /* The parser context */ - Select *p, /* The SELECT statement being coded. */ - SelectDest *pDest /* What to do with the query results */ -){ - int i, j; /* Loop counters */ - WhereInfo *pWInfo; /* Return from sqlite3WhereBegin() */ - Vdbe *v; /* The virtual machine under construction */ - int isAgg; /* True for select lists like "count(*)" */ - ExprList *pEList; /* List of columns to extract. */ - SrcList *pTabList; /* List of tables to select from */ - Expr *pWhere; /* The WHERE clause. May be NULL */ - ExprList *pOrderBy; /* The ORDER BY clause. May be NULL */ - ExprList *pGroupBy; /* The GROUP BY clause. May be NULL */ - Expr *pHaving; /* The HAVING clause. May be NULL */ - int isDistinct; /* True if the DISTINCT keyword is present */ - int distinct; /* Table to use for the distinct set */ - int rc = 1; /* Value to return from this function */ - int addrSortIndex; /* Address of an OP_OpenEphemeral instruction */ - int addrDistinctIndex; /* Address of an OP_OpenEphemeral instruction */ - AggInfo sAggInfo; /* Information used by aggregate queries */ - int iEnd; /* Address of the end of the query */ - sqlite3 *db; /* The database connection */ - -#ifndef SQLITE_OMIT_EXPLAIN - int iRestoreSelectId = pParse->iSelectId; - pParse->iSelectId = pParse->iNextSelectId++; -#endif - - db = pParse->db; - if( p==0 || db->mallocFailed || pParse->nErr ){ - return 1; - } - if( sqlite3AuthCheck(pParse, SQLITE_SELECT, 0, 0, 0) ) return 1; - memset(&sAggInfo, 0, sizeof(sAggInfo)); - - if( IgnorableOrderby(pDest) ){ - assert(pDest->eDest==SRT_Exists || pDest->eDest==SRT_Union || - pDest->eDest==SRT_Except || pDest->eDest==SRT_Discard); - /* If ORDER BY makes no difference in the output then neither does - ** DISTINCT so it can be removed too. */ - sqlite3ExprListDelete(db, p->pOrderBy); - p->pOrderBy = 0; - p->selFlags &= ~SF_Distinct; - } - sqlite3SelectPrep(pParse, p, 0); - pOrderBy = p->pOrderBy; - pTabList = p->pSrc; - pEList = p->pEList; - if( pParse->nErr || db->mallocFailed ){ - goto select_end; - } - isAgg = (p->selFlags & SF_Aggregate)!=0; - assert( pEList!=0 ); - - /* Begin generating code. - */ - v = sqlite3GetVdbe(pParse); - if( v==0 ) goto select_end; - - /* If writing to memory or generating a set - ** only a single column may be output. - */ -#ifndef SQLITE_OMIT_SUBQUERY - if( checkForMultiColumnSelectError(pParse, pDest, pEList->nExpr) ){ - goto select_end; - } -#endif - - /* Generate code for all sub-queries in the FROM clause - */ -#if !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) - for(i=0; !p->pPrior && inSrc; i++){ - struct SrcList_item *pItem = &pTabList->a[i]; - SelectDest dest; - Select *pSub = pItem->pSelect; - int isAggSub; - - if( pSub==0 ) continue; - if( pItem->addrFillSub ){ - sqlite3VdbeAddOp2(v, OP_Gosub, pItem->regReturn, pItem->addrFillSub); - continue; - } - - /* Increment Parse.nHeight by the height of the largest expression - ** tree refered to by this, the parent select. The child select - ** may contain expression trees of at most - ** (SQLITE_MAX_EXPR_DEPTH-Parse.nHeight) height. This is a bit - ** more conservative than necessary, but much easier than enforcing - ** an exact limit. - */ - pParse->nHeight += sqlite3SelectExprHeight(p); - - isAggSub = (pSub->selFlags & SF_Aggregate)!=0; - if( flattenSubquery(pParse, p, i, isAgg, isAggSub) ){ - /* This subquery can be absorbed into its parent. */ - if( isAggSub ){ - isAgg = 1; - p->selFlags |= SF_Aggregate; - } - i = -1; - }else{ - /* Generate a subroutine that will fill an ephemeral table with - ** the content of this subquery. pItem->addrFillSub will point - ** to the address of the generated subroutine. pItem->regReturn - ** is a register allocated to hold the subroutine return address - */ - int topAddr; - int onceAddr = 0; - int retAddr; - assert( pItem->addrFillSub==0 ); - pItem->regReturn = ++pParse->nMem; - topAddr = sqlite3VdbeAddOp2(v, OP_Integer, 0, pItem->regReturn); - pItem->addrFillSub = topAddr+1; - VdbeNoopComment((v, "materialize %s", pItem->pTab->zName)); - if( pItem->isCorrelated==0 && pParse->pTriggerTab==0 ){ - /* If the subquery is no correlated and if we are not inside of - ** a trigger, then we only need to compute the value of the subquery - ** once. */ - int regOnce = ++pParse->nMem; - onceAddr = sqlite3VdbeAddOp1(v, OP_Once, regOnce); - } - sqlite3SelectDestInit(&dest, SRT_EphemTab, pItem->iCursor); - explainSetInteger(pItem->iSelectId, (u8)pParse->iNextSelectId); - sqlite3Select(pParse, pSub, &dest); - pItem->pTab->nRowEst = (unsigned)pSub->nSelectRow; - if( onceAddr ) sqlite3VdbeJumpHere(v, onceAddr); - retAddr = sqlite3VdbeAddOp1(v, OP_Return, pItem->regReturn); - VdbeComment((v, "end %s", pItem->pTab->zName)); - sqlite3VdbeChangeP1(v, topAddr, retAddr); - - } - if( /*pParse->nErr ||*/ db->mallocFailed ){ - goto select_end; - } - pParse->nHeight -= sqlite3SelectExprHeight(p); - pTabList = p->pSrc; - if( !IgnorableOrderby(pDest) ){ - pOrderBy = p->pOrderBy; - } - } - pEList = p->pEList; -#endif - pWhere = p->pWhere; - pGroupBy = p->pGroupBy; - pHaving = p->pHaving; - isDistinct = (p->selFlags & SF_Distinct)!=0; - -#ifndef SQLITE_OMIT_COMPOUND_SELECT - /* If there is are a sequence of queries, do the earlier ones first. - */ - if( p->pPrior ){ - if( p->pRightmost==0 ){ - Select *pLoop, *pRight = 0; - int cnt = 0; - int mxSelect; - for(pLoop=p; pLoop; pLoop=pLoop->pPrior, cnt++){ - pLoop->pRightmost = p; - pLoop->pNext = pRight; - pRight = pLoop; - } - mxSelect = db->aLimit[SQLITE_LIMIT_COMPOUND_SELECT]; - if( mxSelect && cnt>mxSelect ){ - sqlite3ErrorMsg(pParse, "too many terms in compound SELECT"); - goto select_end; - } - } - rc = multiSelect(pParse, p, pDest); - explainSetInteger(pParse->iSelectId, iRestoreSelectId); - return rc; - } -#endif - - /* If there is both a GROUP BY and an ORDER BY clause and they are - ** identical, then disable the ORDER BY clause since the GROUP BY - ** will cause elements to come out in the correct order. This is - ** an optimization - the correct answer should result regardless. - ** Use the SQLITE_GroupByOrder flag with SQLITE_TESTCTRL_OPTIMIZER - ** to disable this optimization for testing purposes. - */ - if( sqlite3ExprListCompare(p->pGroupBy, pOrderBy)==0 - && (db->flags & SQLITE_GroupByOrder)==0 ){ - pOrderBy = 0; - } - - /* If the query is DISTINCT with an ORDER BY but is not an aggregate, and - ** if the select-list is the same as the ORDER BY list, then this query - ** can be rewritten as a GROUP BY. In other words, this: - ** - ** SELECT DISTINCT xyz FROM ... ORDER BY xyz - ** - ** is transformed to: - ** - ** SELECT xyz FROM ... GROUP BY xyz - ** - ** The second form is preferred as a single index (or temp-table) may be - ** used for both the ORDER BY and DISTINCT processing. As originally - ** written the query must use a temp-table for at least one of the ORDER - ** BY and DISTINCT, and an index or separate temp-table for the other. - */ - if( (p->selFlags & (SF_Distinct|SF_Aggregate))==SF_Distinct - && sqlite3ExprListCompare(pOrderBy, p->pEList)==0 - ){ - p->selFlags &= ~SF_Distinct; - p->pGroupBy = sqlite3ExprListDup(db, p->pEList, 0); - pGroupBy = p->pGroupBy; - pOrderBy = 0; - } - - /* If there is an ORDER BY clause, then this sorting - ** index might end up being unused if the data can be - ** extracted in pre-sorted order. If that is the case, then the - ** OP_OpenEphemeral instruction will be changed to an OP_Noop once - ** we figure out that the sorting index is not needed. The addrSortIndex - ** variable is used to facilitate that change. - */ - if( pOrderBy ){ - KeyInfo *pKeyInfo; - pKeyInfo = keyInfoFromExprList(pParse, pOrderBy); - pOrderBy->iECursor = pParse->nTab++; - p->addrOpenEphm[2] = addrSortIndex = - sqlite3VdbeAddOp4(v, OP_OpenEphemeral, - pOrderBy->iECursor, pOrderBy->nExpr+2, 0, - (char*)pKeyInfo, P4_KEYINFO_HANDOFF); - }else{ - addrSortIndex = -1; - } - - /* If the output is destined for a temporary table, open that table. - */ - if( pDest->eDest==SRT_EphemTab ){ - sqlite3VdbeAddOp2(v, OP_OpenEphemeral, pDest->iParm, pEList->nExpr); - } - - /* Set the limiter. - */ - iEnd = sqlite3VdbeMakeLabel(v); - p->nSelectRow = (double)LARGEST_INT64; - computeLimitRegisters(pParse, p, iEnd); - if( p->iLimit==0 && addrSortIndex>=0 ){ - sqlite3VdbeGetOp(v, addrSortIndex)->opcode = OP_SorterOpen; - p->selFlags |= SF_UseSorter; - } - - /* Open a virtual index to use for the distinct set. - */ - if( p->selFlags & SF_Distinct ){ - KeyInfo *pKeyInfo; - distinct = pParse->nTab++; - pKeyInfo = keyInfoFromExprList(pParse, p->pEList); - addrDistinctIndex = sqlite3VdbeAddOp4(v, OP_OpenEphemeral, distinct, 0, 0, - (char*)pKeyInfo, P4_KEYINFO_HANDOFF); - sqlite3VdbeChangeP5(v, BTREE_UNORDERED); - }else{ - distinct = addrDistinctIndex = -1; - } - - /* Aggregate and non-aggregate queries are handled differently */ - if( !isAgg && pGroupBy==0 ){ - ExprList *pDist = (isDistinct ? p->pEList : 0); - - /* Begin the database scan. */ - pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, &pOrderBy, pDist, 0); - if( pWInfo==0 ) goto select_end; - if( pWInfo->nRowOut < p->nSelectRow ) p->nSelectRow = pWInfo->nRowOut; - - /* If sorting index that was created by a prior OP_OpenEphemeral - ** instruction ended up not being needed, then change the OP_OpenEphemeral - ** into an OP_Noop. - */ - if( addrSortIndex>=0 && pOrderBy==0 ){ - sqlite3VdbeChangeToNoop(v, addrSortIndex); - p->addrOpenEphm[2] = -1; - } - - if( pWInfo->eDistinct ){ - VdbeOp *pOp; /* No longer required OpenEphemeral instr. */ - - assert( addrDistinctIndex>=0 ); - pOp = sqlite3VdbeGetOp(v, addrDistinctIndex); - - assert( isDistinct ); - assert( pWInfo->eDistinct==WHERE_DISTINCT_ORDERED - || pWInfo->eDistinct==WHERE_DISTINCT_UNIQUE - ); - distinct = -1; - if( pWInfo->eDistinct==WHERE_DISTINCT_ORDERED ){ - int iJump; - int iExpr; - int iFlag = ++pParse->nMem; - int iBase = pParse->nMem+1; - int iBase2 = iBase + pEList->nExpr; - pParse->nMem += (pEList->nExpr*2); - - /* Change the OP_OpenEphemeral coded earlier to an OP_Integer. The - ** OP_Integer initializes the "first row" flag. */ - pOp->opcode = OP_Integer; - pOp->p1 = 1; - pOp->p2 = iFlag; - - sqlite3ExprCodeExprList(pParse, pEList, iBase, 1); - iJump = sqlite3VdbeCurrentAddr(v) + 1 + pEList->nExpr + 1 + 1; - sqlite3VdbeAddOp2(v, OP_If, iFlag, iJump-1); - for(iExpr=0; iExprnExpr; iExpr++){ - CollSeq *pColl = sqlite3ExprCollSeq(pParse, pEList->a[iExpr].pExpr); - sqlite3VdbeAddOp3(v, OP_Ne, iBase+iExpr, iJump, iBase2+iExpr); - sqlite3VdbeChangeP4(v, -1, (const char *)pColl, P4_COLLSEQ); - sqlite3VdbeChangeP5(v, SQLITE_NULLEQ); - } - sqlite3VdbeAddOp2(v, OP_Goto, 0, pWInfo->iContinue); - - sqlite3VdbeAddOp2(v, OP_Integer, 0, iFlag); - assert( sqlite3VdbeCurrentAddr(v)==iJump ); - sqlite3VdbeAddOp3(v, OP_Move, iBase, iBase2, pEList->nExpr); - }else{ - pOp->opcode = OP_Noop; - } - } - - /* Use the standard inner loop. */ - selectInnerLoop(pParse, p, pEList, 0, 0, pOrderBy, distinct, pDest, - pWInfo->iContinue, pWInfo->iBreak); - - /* End the database scan loop. - */ - sqlite3WhereEnd(pWInfo); - }else{ - /* This is the processing for aggregate queries */ - NameContext sNC; /* Name context for processing aggregate information */ - int iAMem; /* First Mem address for storing current GROUP BY */ - int iBMem; /* First Mem address for previous GROUP BY */ - int iUseFlag; /* Mem address holding flag indicating that at least - ** one row of the input to the aggregator has been - ** processed */ - int iAbortFlag; /* Mem address which causes query abort if positive */ - int groupBySort; /* Rows come from source in GROUP BY order */ - int addrEnd; /* End of processing for this SELECT */ - int sortPTab = 0; /* Pseudotable used to decode sorting results */ - int sortOut = 0; /* Output register from the sorter */ - - /* Remove any and all aliases between the result set and the - ** GROUP BY clause. - */ - if( pGroupBy ){ - int k; /* Loop counter */ - struct ExprList_item *pItem; /* For looping over expression in a list */ - - for(k=p->pEList->nExpr, pItem=p->pEList->a; k>0; k--, pItem++){ - pItem->iAlias = 0; - } - for(k=pGroupBy->nExpr, pItem=pGroupBy->a; k>0; k--, pItem++){ - pItem->iAlias = 0; - } - if( p->nSelectRow>(double)100 ) p->nSelectRow = (double)100; - }else{ - p->nSelectRow = (double)1; - } - - - /* Create a label to jump to when we want to abort the query */ - addrEnd = sqlite3VdbeMakeLabel(v); - - /* Convert TK_COLUMN nodes into TK_AGG_COLUMN and make entries in - ** sAggInfo for all TK_AGG_FUNCTION nodes in expressions of the - ** SELECT statement. - */ - memset(&sNC, 0, sizeof(sNC)); - sNC.pParse = pParse; - sNC.pSrcList = pTabList; - sNC.pAggInfo = &sAggInfo; - sAggInfo.nSortingColumn = pGroupBy ? pGroupBy->nExpr+1 : 0; - sAggInfo.pGroupBy = pGroupBy; - sqlite3ExprAnalyzeAggList(&sNC, pEList); - sqlite3ExprAnalyzeAggList(&sNC, pOrderBy); - if( pHaving ){ - sqlite3ExprAnalyzeAggregates(&sNC, pHaving); - } - sAggInfo.nAccumulator = sAggInfo.nColumn; - for(i=0; ix.pList); - } - if( db->mallocFailed ) goto select_end; - - /* Processing for aggregates with GROUP BY is very different and - ** much more complex than aggregates without a GROUP BY. - */ - if( pGroupBy ){ - KeyInfo *pKeyInfo; /* Keying information for the group by clause */ - int j1; /* A-vs-B comparision jump */ - int addrOutputRow; /* Start of subroutine that outputs a result row */ - int regOutputRow; /* Return address register for output subroutine */ - int addrSetAbort; /* Set the abort flag and return */ - int addrTopOfLoop; /* Top of the input loop */ - int addrSortingIdx; /* The OP_OpenEphemeral for the sorting index */ - int addrReset; /* Subroutine for resetting the accumulator */ - int regReset; /* Return address register for reset subroutine */ - - /* If there is a GROUP BY clause we might need a sorting index to - ** implement it. Allocate that sorting index now. If it turns out - ** that we do not need it after all, the OP_SorterOpen instruction - ** will be converted into a Noop. - */ - sAggInfo.sortingIdx = pParse->nTab++; - pKeyInfo = keyInfoFromExprList(pParse, pGroupBy); - addrSortingIdx = sqlite3VdbeAddOp4(v, OP_SorterOpen, - sAggInfo.sortingIdx, sAggInfo.nSortingColumn, - 0, (char*)pKeyInfo, P4_KEYINFO_HANDOFF); - - /* Initialize memory locations used by GROUP BY aggregate processing - */ - iUseFlag = ++pParse->nMem; - iAbortFlag = ++pParse->nMem; - regOutputRow = ++pParse->nMem; - addrOutputRow = sqlite3VdbeMakeLabel(v); - regReset = ++pParse->nMem; - addrReset = sqlite3VdbeMakeLabel(v); - iAMem = pParse->nMem + 1; - pParse->nMem += pGroupBy->nExpr; - iBMem = pParse->nMem + 1; - pParse->nMem += pGroupBy->nExpr; - sqlite3VdbeAddOp2(v, OP_Integer, 0, iAbortFlag); - VdbeComment((v, "clear abort flag")); - sqlite3VdbeAddOp2(v, OP_Integer, 0, iUseFlag); - VdbeComment((v, "indicate accumulator empty")); - - /* Begin a loop that will extract all source rows in GROUP BY order. - ** This might involve two separate loops with an OP_Sort in between, or - ** it might be a single loop that uses an index to extract information - ** in the right order to begin with. - */ - sqlite3VdbeAddOp2(v, OP_Gosub, regReset, addrReset); - pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, &pGroupBy, 0, 0); - if( pWInfo==0 ) goto select_end; - if( pGroupBy==0 ){ - /* The optimizer is able to deliver rows in group by order so - ** we do not have to sort. The OP_OpenEphemeral table will be - ** cancelled later because we still need to use the pKeyInfo - */ - pGroupBy = p->pGroupBy; - groupBySort = 0; - }else{ - /* Rows are coming out in undetermined order. We have to push - ** each row into a sorting index, terminate the first loop, - ** then loop over the sorting index in order to get the output - ** in sorted order - */ - int regBase; - int regRecord; - int nCol; - int nGroupBy; - - explainTempTable(pParse, - isDistinct && !(p->selFlags&SF_Distinct)?"DISTINCT":"GROUP BY"); - - groupBySort = 1; - nGroupBy = pGroupBy->nExpr; - nCol = nGroupBy + 1; - j = nGroupBy+1; - for(i=0; i=j ){ - nCol++; - j++; - } - } - regBase = sqlite3GetTempRange(pParse, nCol); - sqlite3ExprCacheClear(pParse); - sqlite3ExprCodeExprList(pParse, pGroupBy, regBase, 0); - sqlite3VdbeAddOp2(v, OP_Sequence, sAggInfo.sortingIdx,regBase+nGroupBy); - j = nGroupBy+1; - for(i=0; iiSorterColumn>=j ){ - int r1 = j + regBase; - int r2; - - r2 = sqlite3ExprCodeGetColumn(pParse, - pCol->pTab, pCol->iColumn, pCol->iTable, r1); - if( r1!=r2 ){ - sqlite3VdbeAddOp2(v, OP_SCopy, r2, r1); - } - j++; - } - } - regRecord = sqlite3GetTempReg(pParse); - sqlite3VdbeAddOp3(v, OP_MakeRecord, regBase, nCol, regRecord); - sqlite3VdbeAddOp2(v, OP_SorterInsert, sAggInfo.sortingIdx, regRecord); - sqlite3ReleaseTempReg(pParse, regRecord); - sqlite3ReleaseTempRange(pParse, regBase, nCol); - sqlite3WhereEnd(pWInfo); - sAggInfo.sortingIdxPTab = sortPTab = pParse->nTab++; - sortOut = sqlite3GetTempReg(pParse); - sqlite3VdbeAddOp3(v, OP_OpenPseudo, sortPTab, sortOut, nCol); - sqlite3VdbeAddOp2(v, OP_SorterSort, sAggInfo.sortingIdx, addrEnd); - VdbeComment((v, "GROUP BY sort")); - sAggInfo.useSortingIdx = 1; - sqlite3ExprCacheClear(pParse); - } - - /* Evaluate the current GROUP BY terms and store in b0, b1, b2... - ** (b0 is memory location iBMem+0, b1 is iBMem+1, and so forth) - ** Then compare the current GROUP BY terms against the GROUP BY terms - ** from the previous row currently stored in a0, a1, a2... - */ - addrTopOfLoop = sqlite3VdbeCurrentAddr(v); - sqlite3ExprCacheClear(pParse); - if( groupBySort ){ - sqlite3VdbeAddOp2(v, OP_SorterData, sAggInfo.sortingIdx, sortOut); - } - for(j=0; jnExpr; j++){ - if( groupBySort ){ - sqlite3VdbeAddOp3(v, OP_Column, sortPTab, j, iBMem+j); - if( j==0 ) sqlite3VdbeChangeP5(v, OPFLAG_CLEARCACHE); - }else{ - sAggInfo.directMode = 1; - sqlite3ExprCode(pParse, pGroupBy->a[j].pExpr, iBMem+j); - } - } - sqlite3VdbeAddOp4(v, OP_Compare, iAMem, iBMem, pGroupBy->nExpr, - (char*)pKeyInfo, P4_KEYINFO); - j1 = sqlite3VdbeCurrentAddr(v); - sqlite3VdbeAddOp3(v, OP_Jump, j1+1, 0, j1+1); - - /* Generate code that runs whenever the GROUP BY changes. - ** Changes in the GROUP BY are detected by the previous code - ** block. If there were no changes, this block is skipped. - ** - ** This code copies current group by terms in b0,b1,b2,... - ** over to a0,a1,a2. It then calls the output subroutine - ** and resets the aggregate accumulator registers in preparation - ** for the next GROUP BY batch. - */ - sqlite3ExprCodeMove(pParse, iBMem, iAMem, pGroupBy->nExpr); - sqlite3VdbeAddOp2(v, OP_Gosub, regOutputRow, addrOutputRow); - VdbeComment((v, "output one row")); - sqlite3VdbeAddOp2(v, OP_IfPos, iAbortFlag, addrEnd); - VdbeComment((v, "check abort flag")); - sqlite3VdbeAddOp2(v, OP_Gosub, regReset, addrReset); - VdbeComment((v, "reset accumulator")); - - /* Update the aggregate accumulators based on the content of - ** the current row - */ - sqlite3VdbeJumpHere(v, j1); - updateAccumulator(pParse, &sAggInfo); - sqlite3VdbeAddOp2(v, OP_Integer, 1, iUseFlag); - VdbeComment((v, "indicate data in accumulator")); - - /* End of the loop - */ - if( groupBySort ){ - sqlite3VdbeAddOp2(v, OP_SorterNext, sAggInfo.sortingIdx, addrTopOfLoop); - }else{ - sqlite3WhereEnd(pWInfo); - sqlite3VdbeChangeToNoop(v, addrSortingIdx); - } - - /* Output the final row of result - */ - sqlite3VdbeAddOp2(v, OP_Gosub, regOutputRow, addrOutputRow); - VdbeComment((v, "output final row")); - - /* Jump over the subroutines - */ - sqlite3VdbeAddOp2(v, OP_Goto, 0, addrEnd); - - /* Generate a subroutine that outputs a single row of the result - ** set. This subroutine first looks at the iUseFlag. If iUseFlag - ** is less than or equal to zero, the subroutine is a no-op. If - ** the processing calls for the query to abort, this subroutine - ** increments the iAbortFlag memory location before returning in - ** order to signal the caller to abort. - */ - addrSetAbort = sqlite3VdbeCurrentAddr(v); - sqlite3VdbeAddOp2(v, OP_Integer, 1, iAbortFlag); - VdbeComment((v, "set abort flag")); - sqlite3VdbeAddOp1(v, OP_Return, regOutputRow); - sqlite3VdbeResolveLabel(v, addrOutputRow); - addrOutputRow = sqlite3VdbeCurrentAddr(v); - sqlite3VdbeAddOp2(v, OP_IfPos, iUseFlag, addrOutputRow+2); - VdbeComment((v, "Groupby result generator entry point")); - sqlite3VdbeAddOp1(v, OP_Return, regOutputRow); - finalizeAggFunctions(pParse, &sAggInfo); - sqlite3ExprIfFalse(pParse, pHaving, addrOutputRow+1, SQLITE_JUMPIFNULL); - selectInnerLoop(pParse, p, p->pEList, 0, 0, pOrderBy, - distinct, pDest, - addrOutputRow+1, addrSetAbort); - sqlite3VdbeAddOp1(v, OP_Return, regOutputRow); - VdbeComment((v, "end groupby result generator")); - - /* Generate a subroutine that will reset the group-by accumulator - */ - sqlite3VdbeResolveLabel(v, addrReset); - resetAccumulator(pParse, &sAggInfo); - sqlite3VdbeAddOp1(v, OP_Return, regReset); - - } /* endif pGroupBy. Begin aggregate queries without GROUP BY: */ - else { - ExprList *pDel = 0; -#ifndef SQLITE_OMIT_BTREECOUNT - Table *pTab; - if( (pTab = isSimpleCount(p, &sAggInfo))!=0 ){ - /* If isSimpleCount() returns a pointer to a Table structure, then - ** the SQL statement is of the form: - ** - ** SELECT count(*) FROM - ** - ** where the Table structure returned represents table . - ** - ** This statement is so common that it is optimized specially. The - ** OP_Count instruction is executed either on the intkey table that - ** contains the data for table or on one of its indexes. It - ** is better to execute the op on an index, as indexes are almost - ** always spread across less pages than their corresponding tables. - */ - const int iDb = sqlite3SchemaToIndex(pParse->db, pTab->pSchema); - const int iCsr = pParse->nTab++; /* Cursor to scan b-tree */ - Index *pIdx; /* Iterator variable */ - KeyInfo *pKeyInfo = 0; /* Keyinfo for scanned index */ - Index *pBest = 0; /* Best index found so far */ - int iRoot = pTab->tnum; /* Root page of scanned b-tree */ - - sqlite3CodeVerifySchema(pParse, iDb); - sqlite3TableLock(pParse, iDb, pTab->tnum, 0, pTab->zName); - - /* Search for the index that has the least amount of columns. If - ** there is such an index, and it has less columns than the table - ** does, then we can assume that it consumes less space on disk and - ** will therefore be cheaper to scan to determine the query result. - ** In this case set iRoot to the root page number of the index b-tree - ** and pKeyInfo to the KeyInfo structure required to navigate the - ** index. - ** - ** (2011-04-15) Do not do a full scan of an unordered index. - ** - ** In practice the KeyInfo structure will not be used. It is only - ** passed to keep OP_OpenRead happy. - */ - for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ - if( pIdx->bUnordered==0 && (!pBest || pIdx->nColumnnColumn) ){ - pBest = pIdx; - } - } - if( pBest && pBest->nColumnnCol ){ - iRoot = pBest->tnum; - pKeyInfo = sqlite3IndexKeyinfo(pParse, pBest); - } - - /* Open a read-only cursor, execute the OP_Count, close the cursor. */ - sqlite3VdbeAddOp3(v, OP_OpenRead, iCsr, iRoot, iDb); - if( pKeyInfo ){ - sqlite3VdbeChangeP4(v, -1, (char *)pKeyInfo, P4_KEYINFO_HANDOFF); - } - sqlite3VdbeAddOp2(v, OP_Count, iCsr, sAggInfo.aFunc[0].iMem); - sqlite3VdbeAddOp1(v, OP_Close, iCsr); - explainSimpleCount(pParse, pTab, pBest); - }else -#endif /* SQLITE_OMIT_BTREECOUNT */ - { - /* Check if the query is of one of the following forms: - ** - ** SELECT min(x) FROM ... - ** SELECT max(x) FROM ... - ** - ** If it is, then ask the code in where.c to attempt to sort results - ** as if there was an "ORDER ON x" or "ORDER ON x DESC" clause. - ** If where.c is able to produce results sorted in this order, then - ** add vdbe code to break out of the processing loop after the - ** first iteration (since the first iteration of the loop is - ** guaranteed to operate on the row with the minimum or maximum - ** value of x, the only row required). - ** - ** A special flag must be passed to sqlite3WhereBegin() to slightly - ** modify behaviour as follows: - ** - ** + If the query is a "SELECT min(x)", then the loop coded by - ** where.c should not iterate over any values with a NULL value - ** for x. - ** - ** + The optimizer code in where.c (the thing that decides which - ** index or indices to use) should place a different priority on - ** satisfying the 'ORDER BY' clause than it does in other cases. - ** Refer to code and comments in where.c for details. - */ - ExprList *pMinMax = 0; - u8 flag = minMaxQuery(p); - if( flag ){ - assert( !ExprHasProperty(p->pEList->a[0].pExpr, EP_xIsSelect) ); - pMinMax = sqlite3ExprListDup(db, p->pEList->a[0].pExpr->x.pList,0); - pDel = pMinMax; - if( pMinMax && !db->mallocFailed ){ - pMinMax->a[0].sortOrder = flag!=WHERE_ORDERBY_MIN ?1:0; - pMinMax->a[0].pExpr->op = TK_COLUMN; - } - } - - /* This case runs if the aggregate has no GROUP BY clause. The - ** processing is much simpler since there is only a single row - ** of output. - */ - resetAccumulator(pParse, &sAggInfo); - pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, &pMinMax, 0, flag); - if( pWInfo==0 ){ - sqlite3ExprListDelete(db, pDel); - goto select_end; - } - updateAccumulator(pParse, &sAggInfo); - if( !pMinMax && flag ){ - sqlite3VdbeAddOp2(v, OP_Goto, 0, pWInfo->iBreak); - VdbeComment((v, "%s() by index", - (flag==WHERE_ORDERBY_MIN?"min":"max"))); - } - sqlite3WhereEnd(pWInfo); - finalizeAggFunctions(pParse, &sAggInfo); - } - - pOrderBy = 0; - sqlite3ExprIfFalse(pParse, pHaving, addrEnd, SQLITE_JUMPIFNULL); - selectInnerLoop(pParse, p, p->pEList, 0, 0, 0, -1, - pDest, addrEnd, addrEnd); - sqlite3ExprListDelete(db, pDel); - } - sqlite3VdbeResolveLabel(v, addrEnd); - - } /* endif aggregate query */ - - if( distinct>=0 ){ - explainTempTable(pParse, "DISTINCT"); - } - - /* If there is an ORDER BY clause, then we need to sort the results - ** and send them to the callback one by one. - */ - if( pOrderBy ){ - explainTempTable(pParse, "ORDER BY"); - generateSortTail(pParse, p, v, pEList->nExpr, pDest); - } - - /* Jump here to skip this query - */ - sqlite3VdbeResolveLabel(v, iEnd); - - /* The SELECT was successfully coded. Set the return code to 0 - ** to indicate no errors. - */ - rc = 0; - - /* Control jumps to here if an error is encountered above, or upon - ** successful coding of the SELECT. - */ -select_end: - explainSetInteger(pParse->iSelectId, iRestoreSelectId); - - /* Identify column names if results of the SELECT are to be output. - */ - if( rc==SQLITE_OK && pDest->eDest==SRT_Output ){ - generateColumnNames(pParse, pTabList, pEList); - } - - sqlite3DbFree(db, sAggInfo.aCol); - sqlite3DbFree(db, sAggInfo.aFunc); - return rc; -} - -#if defined(SQLITE_DEBUG) -/* -******************************************************************************* -** The following code is used for testing and debugging only. The code -** that follows does not appear in normal builds. -** -** These routines are used to print out the content of all or part of a -** parse structures such as Select or Expr. Such printouts are useful -** for helping to understand what is happening inside the code generator -** during the execution of complex SELECT statements. -** -** These routine are not called anywhere from within the normal -** code base. Then are intended to be called from within the debugger -** or from temporary "printf" statements inserted for debugging. -*/ -void sqlite3PrintExpr(Expr *p){ - if( !ExprHasProperty(p, EP_IntValue) && p->u.zToken ){ - sqlite3DebugPrintf("(%s", p->u.zToken); - }else{ - sqlite3DebugPrintf("(%d", p->op); - } - if( p->pLeft ){ - sqlite3DebugPrintf(" "); - sqlite3PrintExpr(p->pLeft); - } - if( p->pRight ){ - sqlite3DebugPrintf(" "); - sqlite3PrintExpr(p->pRight); - } - sqlite3DebugPrintf(")"); -} -void sqlite3PrintExprList(ExprList *pList){ - int i; - for(i=0; inExpr; i++){ - sqlite3PrintExpr(pList->a[i].pExpr); - if( inExpr-1 ){ - sqlite3DebugPrintf(", "); - } - } -} -void sqlite3PrintSelect(Select *p, int indent){ - sqlite3DebugPrintf("%*sSELECT(%p) ", indent, "", p); - sqlite3PrintExprList(p->pEList); - sqlite3DebugPrintf("\n"); - if( p->pSrc ){ - char *zPrefix; - int i; - zPrefix = "FROM"; - for(i=0; ipSrc->nSrc; i++){ - struct SrcList_item *pItem = &p->pSrc->a[i]; - sqlite3DebugPrintf("%*s ", indent+6, zPrefix); - zPrefix = ""; - if( pItem->pSelect ){ - sqlite3DebugPrintf("(\n"); - sqlite3PrintSelect(pItem->pSelect, indent+10); - sqlite3DebugPrintf("%*s)", indent+8, ""); - }else if( pItem->zName ){ - sqlite3DebugPrintf("%s", pItem->zName); - } - if( pItem->pTab ){ - sqlite3DebugPrintf("(table: %s)", pItem->pTab->zName); - } - if( pItem->zAlias ){ - sqlite3DebugPrintf(" AS %s", pItem->zAlias); - } - if( ipSrc->nSrc-1 ){ - sqlite3DebugPrintf(","); - } - sqlite3DebugPrintf("\n"); - } - } - if( p->pWhere ){ - sqlite3DebugPrintf("%*s WHERE ", indent, ""); - sqlite3PrintExpr(p->pWhere); - sqlite3DebugPrintf("\n"); - } - if( p->pGroupBy ){ - sqlite3DebugPrintf("%*s GROUP BY ", indent, ""); - sqlite3PrintExprList(p->pGroupBy); - sqlite3DebugPrintf("\n"); - } - if( p->pHaving ){ - sqlite3DebugPrintf("%*s HAVING ", indent, ""); - sqlite3PrintExpr(p->pHaving); - sqlite3DebugPrintf("\n"); - } - if( p->pOrderBy ){ - sqlite3DebugPrintf("%*s ORDER BY ", indent, ""); - sqlite3PrintExprList(p->pOrderBy); - sqlite3DebugPrintf("\n"); - } -} -/* End of the structure debug printing code -*****************************************************************************/ -#endif /* defined(SQLITE_TEST) || defined(SQLITE_DEBUG) */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/shell.c b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/shell.c deleted file mode 100644 index 17a7f4b1bb..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/shell.c +++ /dev/null @@ -1,2967 +0,0 @@ -/* -** 2001 September 15 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This file contains code to implement the "sqlite" command line -** utility for accessing SQLite databases. -*/ -#if (defined(_WIN32) || defined(WIN32)) && !defined(_CRT_SECURE_NO_WARNINGS) -/* This needs to come before any includes for MSVC compiler */ -#define _CRT_SECURE_NO_WARNINGS -#endif - -/* -** Enable large-file support for fopen() and friends on unix. -*/ -#ifndef SQLITE_DISABLE_LFS -# define _LARGE_FILE 1 -# ifndef _FILE_OFFSET_BITS -# define _FILE_OFFSET_BITS 64 -# endif -# define _LARGEFILE_SOURCE 1 -#endif - -#include -#include -#include -#include -#include "sqlite3.h" -#include -#include - -#if !defined(_WIN32) && !defined(WIN32) && !defined(__OS2__) -# include -# if !defined(__RTP__) && !defined(_WRS_KERNEL) -# include -# endif -# include -# include -#endif - -#ifdef __OS2__ -# include -#endif - -#ifdef HAVE_EDITLINE -# include -#endif -#if defined(HAVE_READLINE) && HAVE_READLINE==1 -# include -# include -#endif -#if !defined(HAVE_EDITLINE) && (!defined(HAVE_READLINE) || HAVE_READLINE!=1) -# define readline(p) local_getline(p,stdin) -# define add_history(X) -# define read_history(X) -# define write_history(X) -# define stifle_history(X) -#endif - -#if defined(_WIN32) || defined(WIN32) -# include -#define isatty(h) _isatty(h) -#define access(f,m) _access((f),(m)) -#else -/* Make sure isatty() has a prototype. -*/ -extern int isatty(int); -#endif - -#if defined(_WIN32_WCE) -/* Windows CE (arm-wince-mingw32ce-gcc) does not provide isatty() - * thus we always assume that we have a console. That can be - * overridden with the -batch command line option. - */ -#define isatty(x) 1 -#endif - -/* True if the timer is enabled */ -static int enableTimer = 0; - -/* ctype macros that work with signed characters */ -#define IsSpace(X) isspace((unsigned char)X) -#define IsDigit(X) isdigit((unsigned char)X) -#define ToLower(X) (char)tolower((unsigned char)X) - -#if !defined(_WIN32) && !defined(WIN32) && !defined(__OS2__) && !defined(__RTP__) && !defined(_WRS_KERNEL) -#include -#include - -/* Saved resource information for the beginning of an operation */ -static struct rusage sBegin; - -/* -** Begin timing an operation -*/ -static void beginTimer(void){ - if( enableTimer ){ - getrusage(RUSAGE_SELF, &sBegin); - } -} - -/* Return the difference of two time_structs in seconds */ -static double timeDiff(struct timeval *pStart, struct timeval *pEnd){ - return (pEnd->tv_usec - pStart->tv_usec)*0.000001 + - (double)(pEnd->tv_sec - pStart->tv_sec); -} - -/* -** Print the timing results. -*/ -static void endTimer(void){ - if( enableTimer ){ - struct rusage sEnd; - getrusage(RUSAGE_SELF, &sEnd); - printf("CPU Time: user %f sys %f\n", - timeDiff(&sBegin.ru_utime, &sEnd.ru_utime), - timeDiff(&sBegin.ru_stime, &sEnd.ru_stime)); - } -} - -#define BEGIN_TIMER beginTimer() -#define END_TIMER endTimer() -#define HAS_TIMER 1 - -#elif (defined(_WIN32) || defined(WIN32)) - -#include - -/* Saved resource information for the beginning of an operation */ -static HANDLE hProcess; -static FILETIME ftKernelBegin; -static FILETIME ftUserBegin; -typedef BOOL (WINAPI *GETPROCTIMES)(HANDLE, LPFILETIME, LPFILETIME, LPFILETIME, LPFILETIME); -static GETPROCTIMES getProcessTimesAddr = NULL; - -/* -** Check to see if we have timer support. Return 1 if necessary -** support found (or found previously). -*/ -static int hasTimer(void){ - if( getProcessTimesAddr ){ - return 1; - } else { - /* GetProcessTimes() isn't supported in WIN95 and some other Windows versions. - ** See if the version we are running on has it, and if it does, save off - ** a pointer to it and the current process handle. - */ - hProcess = GetCurrentProcess(); - if( hProcess ){ - HINSTANCE hinstLib = LoadLibrary(TEXT("Kernel32.dll")); - if( NULL != hinstLib ){ - getProcessTimesAddr = (GETPROCTIMES) GetProcAddress(hinstLib, "GetProcessTimes"); - if( NULL != getProcessTimesAddr ){ - return 1; - } - FreeLibrary(hinstLib); - } - } - } - return 0; -} - -/* -** Begin timing an operation -*/ -static void beginTimer(void){ - if( enableTimer && getProcessTimesAddr ){ - FILETIME ftCreation, ftExit; - getProcessTimesAddr(hProcess, &ftCreation, &ftExit, &ftKernelBegin, &ftUserBegin); - } -} - -/* Return the difference of two FILETIME structs in seconds */ -static double timeDiff(FILETIME *pStart, FILETIME *pEnd){ - sqlite_int64 i64Start = *((sqlite_int64 *) pStart); - sqlite_int64 i64End = *((sqlite_int64 *) pEnd); - return (double) ((i64End - i64Start) / 10000000.0); -} - -/* -** Print the timing results. -*/ -static void endTimer(void){ - if( enableTimer && getProcessTimesAddr){ - FILETIME ftCreation, ftExit, ftKernelEnd, ftUserEnd; - getProcessTimesAddr(hProcess, &ftCreation, &ftExit, &ftKernelEnd, &ftUserEnd); - printf("CPU Time: user %f sys %f\n", - timeDiff(&ftUserBegin, &ftUserEnd), - timeDiff(&ftKernelBegin, &ftKernelEnd)); - } -} - -#define BEGIN_TIMER beginTimer() -#define END_TIMER endTimer() -#define HAS_TIMER hasTimer() - -#else -#define BEGIN_TIMER -#define END_TIMER -#define HAS_TIMER 0 -#endif - -/* -** Used to prevent warnings about unused parameters -*/ -#define UNUSED_PARAMETER(x) (void)(x) - -/* -** If the following flag is set, then command execution stops -** at an error if we are not interactive. -*/ -static int bail_on_error = 0; - -/* -** Threat stdin as an interactive input if the following variable -** is true. Otherwise, assume stdin is connected to a file or pipe. -*/ -static int stdin_is_interactive = 1; - -/* -** The following is the open SQLite database. We make a pointer -** to this database a static variable so that it can be accessed -** by the SIGINT handler to interrupt database processing. -*/ -static sqlite3 *db = 0; - -/* -** True if an interrupt (Control-C) has been received. -*/ -static volatile int seenInterrupt = 0; - -/* -** This is the name of our program. It is set in main(), used -** in a number of other places, mostly for error messages. -*/ -static char *Argv0; - -/* -** Prompt strings. Initialized in main. Settable with -** .prompt main continue -*/ -static char mainPrompt[20]; /* First line prompt. default: "sqlite> "*/ -static char continuePrompt[20]; /* Continuation prompt. default: " ...> " */ - -/* -** Write I/O traces to the following stream. -*/ -#ifdef SQLITE_ENABLE_IOTRACE -static FILE *iotrace = 0; -#endif - -/* -** This routine works like printf in that its first argument is a -** format string and subsequent arguments are values to be substituted -** in place of % fields. The result of formatting this string -** is written to iotrace. -*/ -#ifdef SQLITE_ENABLE_IOTRACE -static void iotracePrintf(const char *zFormat, ...){ - va_list ap; - char *z; - if( iotrace==0 ) return; - va_start(ap, zFormat); - z = sqlite3_vmprintf(zFormat, ap); - va_end(ap); - fprintf(iotrace, "%s", z); - sqlite3_free(z); -} -#endif - - -/* -** Determines if a string is a number of not. -*/ -static int isNumber(const char *z, int *realnum){ - if( *z=='-' || *z=='+' ) z++; - if( !IsDigit(*z) ){ - return 0; - } - z++; - if( realnum ) *realnum = 0; - while( IsDigit(*z) ){ z++; } - if( *z=='.' ){ - z++; - if( !IsDigit(*z) ) return 0; - while( IsDigit(*z) ){ z++; } - if( realnum ) *realnum = 1; - } - if( *z=='e' || *z=='E' ){ - z++; - if( *z=='+' || *z=='-' ) z++; - if( !IsDigit(*z) ) return 0; - while( IsDigit(*z) ){ z++; } - if( realnum ) *realnum = 1; - } - return *z==0; -} - -/* -** A global char* and an SQL function to access its current value -** from within an SQL statement. This program used to use the -** sqlite_exec_printf() API to substitue a string into an SQL statement. -** The correct way to do this with sqlite3 is to use the bind API, but -** since the shell is built around the callback paradigm it would be a lot -** of work. Instead just use this hack, which is quite harmless. -*/ -static const char *zShellStatic = 0; -static void shellstaticFunc( - sqlite3_context *context, - int argc, - sqlite3_value **argv -){ - assert( 0==argc ); - assert( zShellStatic ); - UNUSED_PARAMETER(argc); - UNUSED_PARAMETER(argv); - sqlite3_result_text(context, zShellStatic, -1, SQLITE_STATIC); -} - - -/* -** This routine reads a line of text from FILE in, stores -** the text in memory obtained from malloc() and returns a pointer -** to the text. NULL is returned at end of file, or if malloc() -** fails. -** -** The interface is like "readline" but no command-line editing -** is done. -*/ -static char *local_getline(char *zPrompt, FILE *in){ - char *zLine; - int nLine; - int n; - - if( zPrompt && *zPrompt ){ - printf("%s",zPrompt); - fflush(stdout); - } - nLine = 100; - zLine = malloc( nLine ); - if( zLine==0 ) return 0; - n = 0; - while( 1 ){ - if( n+100>nLine ){ - nLine = nLine*2 + 100; - zLine = realloc(zLine, nLine); - if( zLine==0 ) return 0; - } - if( fgets(&zLine[n], nLine - n, in)==0 ){ - if( n==0 ){ - free(zLine); - return 0; - } - zLine[n] = 0; - break; - } - while( zLine[n] ){ n++; } - if( n>0 && zLine[n-1]=='\n' ){ - n--; - if( n>0 && zLine[n-1]=='\r' ) n--; - zLine[n] = 0; - break; - } - } - zLine = realloc( zLine, n+1 ); - return zLine; -} - -/* -** Retrieve a single line of input text. -** -** zPrior is a string of prior text retrieved. If not the empty -** string, then issue a continuation prompt. -*/ -static char *one_input_line(const char *zPrior, FILE *in){ - char *zPrompt; - char *zResult; - if( in!=0 ){ - return local_getline(0, in); - } - if( zPrior && zPrior[0] ){ - zPrompt = continuePrompt; - }else{ - zPrompt = mainPrompt; - } - zResult = readline(zPrompt); -#if defined(HAVE_READLINE) && HAVE_READLINE==1 - if( zResult && *zResult ) add_history(zResult); -#endif - return zResult; -} - -struct previous_mode_data { - int valid; /* Is there legit data in here? */ - int mode; - int showHeader; - int colWidth[100]; -}; - -/* -** An pointer to an instance of this structure is passed from -** the main program to the callback. This is used to communicate -** state and mode information. -*/ -struct callback_data { - sqlite3 *db; /* The database */ - int echoOn; /* True to echo input commands */ - int statsOn; /* True to display memory stats before each finalize */ - int cnt; /* Number of records displayed so far */ - FILE *out; /* Write results here */ - int nErr; /* Number of errors seen */ - int mode; /* An output mode setting */ - int writableSchema; /* True if PRAGMA writable_schema=ON */ - int showHeader; /* True to show column names in List or Column mode */ - char *zDestTable; /* Name of destination table when MODE_Insert */ - char separator[20]; /* Separator character for MODE_List */ - int colWidth[100]; /* Requested width of each column when in column mode*/ - int actualWidth[100]; /* Actual width of each column */ - char nullvalue[20]; /* The text to print when a NULL comes back from - ** the database */ - struct previous_mode_data explainPrev; - /* Holds the mode information just before - ** .explain ON */ - char outfile[FILENAME_MAX]; /* Filename for *out */ - const char *zDbFilename; /* name of the database file */ - const char *zVfs; /* Name of VFS to use */ - sqlite3_stmt *pStmt; /* Current statement if any. */ - FILE *pLog; /* Write log output here */ -}; - -/* -** These are the allowed modes. -*/ -#define MODE_Line 0 /* One column per line. Blank line between records */ -#define MODE_Column 1 /* One record per line in neat columns */ -#define MODE_List 2 /* One record per line with a separator */ -#define MODE_Semi 3 /* Same as MODE_List but append ";" to each line */ -#define MODE_Html 4 /* Generate an XHTML table */ -#define MODE_Insert 5 /* Generate SQL "insert" statements */ -#define MODE_Tcl 6 /* Generate ANSI-C or TCL quoted elements */ -#define MODE_Csv 7 /* Quote strings, numbers are plain */ -#define MODE_Explain 8 /* Like MODE_Column, but do not truncate data */ - -static const char *modeDescr[] = { - "line", - "column", - "list", - "semi", - "html", - "insert", - "tcl", - "csv", - "explain", -}; - -/* -** Number of elements in an array -*/ -#define ArraySize(X) (int)(sizeof(X)/sizeof(X[0])) - -/* -** Compute a string length that is limited to what can be stored in -** lower 30 bits of a 32-bit signed integer. -*/ -static int strlen30(const char *z){ - const char *z2 = z; - while( *z2 ){ z2++; } - return 0x3fffffff & (int)(z2 - z); -} - -/* -** A callback for the sqlite3_log() interface. -*/ -static void shellLog(void *pArg, int iErrCode, const char *zMsg){ - struct callback_data *p = (struct callback_data*)pArg; - if( p->pLog==0 ) return; - fprintf(p->pLog, "(%d) %s\n", iErrCode, zMsg); - fflush(p->pLog); -} - -/* -** Output the given string as a hex-encoded blob (eg. X'1234' ) -*/ -static void output_hex_blob(FILE *out, const void *pBlob, int nBlob){ - int i; - char *zBlob = (char *)pBlob; - fprintf(out,"X'"); - for(i=0; i0 ){ - fprintf(out,"%.*s",i,z); - } - if( z[i]=='<' ){ - fprintf(out,"<"); - }else if( z[i]=='&' ){ - fprintf(out,"&"); - }else if( z[i]=='>' ){ - fprintf(out,">"); - }else if( z[i]=='\"' ){ - fprintf(out,"""); - }else if( z[i]=='\'' ){ - fprintf(out,"'"); - }else{ - break; - } - z += i + 1; - } -} - -/* -** If a field contains any character identified by a 1 in the following -** array, then the string must be quoted for CSV. -*/ -static const char needCsvQuote[] = { - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, -}; - -/* -** Output a single term of CSV. Actually, p->separator is used for -** the separator, which may or may not be a comma. p->nullvalue is -** the null value. Strings are quoted using ANSI-C rules. Numbers -** appear outside of quotes. -*/ -static void output_csv(struct callback_data *p, const char *z, int bSep){ - FILE *out = p->out; - if( z==0 ){ - fprintf(out,"%s",p->nullvalue); - }else{ - int i; - int nSep = strlen30(p->separator); - for(i=0; z[i]; i++){ - if( needCsvQuote[((unsigned char*)z)[i]] - || (z[i]==p->separator[0] && - (nSep==1 || memcmp(z, p->separator, nSep)==0)) ){ - i = 0; - break; - } - } - if( i==0 ){ - putc('"', out); - for(i=0; z[i]; i++){ - if( z[i]=='"' ) putc('"', out); - putc(z[i], out); - } - putc('"', out); - }else{ - fprintf(out, "%s", z); - } - } - if( bSep ){ - fprintf(p->out, "%s", p->separator); - } -} - -#ifdef SIGINT -/* -** This routine runs when the user presses Ctrl-C -*/ -static void interrupt_handler(int NotUsed){ - UNUSED_PARAMETER(NotUsed); - seenInterrupt = 1; - if( db ) sqlite3_interrupt(db); -} -#endif - -/* -** This is the callback routine that the shell -** invokes for each row of a query result. -*/ -static int shell_callback(void *pArg, int nArg, char **azArg, char **azCol, int *aiType){ - int i; - struct callback_data *p = (struct callback_data*)pArg; - - switch( p->mode ){ - case MODE_Line: { - int w = 5; - if( azArg==0 ) break; - for(i=0; iw ) w = len; - } - if( p->cnt++>0 ) fprintf(p->out,"\n"); - for(i=0; iout,"%*s = %s\n", w, azCol[i], - azArg[i] ? azArg[i] : p->nullvalue); - } - break; - } - case MODE_Explain: - case MODE_Column: { - if( p->cnt++==0 ){ - for(i=0; icolWidth) ){ - w = p->colWidth[i]; - }else{ - w = 0; - } - if( w<=0 ){ - w = strlen30(azCol[i] ? azCol[i] : ""); - if( w<10 ) w = 10; - n = strlen30(azArg && azArg[i] ? azArg[i] : p->nullvalue); - if( wactualWidth) ){ - p->actualWidth[i] = w; - } - if( p->showHeader ){ - fprintf(p->out,"%-*.*s%s",w,w,azCol[i], i==nArg-1 ? "\n": " "); - } - } - if( p->showHeader ){ - for(i=0; iactualWidth) ){ - w = p->actualWidth[i]; - }else{ - w = 10; - } - fprintf(p->out,"%-*.*s%s",w,w,"-----------------------------------" - "----------------------------------------------------------", - i==nArg-1 ? "\n": " "); - } - } - } - if( azArg==0 ) break; - for(i=0; iactualWidth) ){ - w = p->actualWidth[i]; - }else{ - w = 10; - } - if( p->mode==MODE_Explain && azArg[i] && - strlen30(azArg[i])>w ){ - w = strlen30(azArg[i]); - } - fprintf(p->out,"%-*.*s%s",w,w, - azArg[i] ? azArg[i] : p->nullvalue, i==nArg-1 ? "\n": " "); - } - break; - } - case MODE_Semi: - case MODE_List: { - if( p->cnt++==0 && p->showHeader ){ - for(i=0; iout,"%s%s",azCol[i], i==nArg-1 ? "\n" : p->separator); - } - } - if( azArg==0 ) break; - for(i=0; inullvalue; - fprintf(p->out, "%s", z); - if( iout, "%s", p->separator); - }else if( p->mode==MODE_Semi ){ - fprintf(p->out, ";\n"); - }else{ - fprintf(p->out, "\n"); - } - } - break; - } - case MODE_Html: { - if( p->cnt++==0 && p->showHeader ){ - fprintf(p->out,""); - for(i=0; iout,"\n"); - } - fprintf(p->out,"\n"); - } - if( azArg==0 ) break; - fprintf(p->out,""); - for(i=0; iout,"\n"); - } - fprintf(p->out,"\n"); - break; - } - case MODE_Tcl: { - if( p->cnt++==0 && p->showHeader ){ - for(i=0; iout,azCol[i] ? azCol[i] : ""); - fprintf(p->out, "%s", p->separator); - } - fprintf(p->out,"\n"); - } - if( azArg==0 ) break; - for(i=0; iout, azArg[i] ? azArg[i] : p->nullvalue); - fprintf(p->out, "%s", p->separator); - } - fprintf(p->out,"\n"); - break; - } - case MODE_Csv: { - if( p->cnt++==0 && p->showHeader ){ - for(i=0; iout,"\n"); - } - if( azArg==0 ) break; - for(i=0; iout,"\n"); - break; - } - case MODE_Insert: { - p->cnt++; - if( azArg==0 ) break; - fprintf(p->out,"INSERT INTO %s VALUES(",p->zDestTable); - for(i=0; i0 ? ",": ""; - if( (azArg[i]==0) || (aiType && aiType[i]==SQLITE_NULL) ){ - fprintf(p->out,"%sNULL",zSep); - }else if( aiType && aiType[i]==SQLITE_TEXT ){ - if( zSep[0] ) fprintf(p->out,"%s",zSep); - output_quoted_string(p->out, azArg[i]); - }else if( aiType && (aiType[i]==SQLITE_INTEGER || aiType[i]==SQLITE_FLOAT) ){ - fprintf(p->out,"%s%s",zSep, azArg[i]); - }else if( aiType && aiType[i]==SQLITE_BLOB && p->pStmt ){ - const void *pBlob = sqlite3_column_blob(p->pStmt, i); - int nBlob = sqlite3_column_bytes(p->pStmt, i); - if( zSep[0] ) fprintf(p->out,"%s",zSep); - output_hex_blob(p->out, pBlob, nBlob); - }else if( isNumber(azArg[i], 0) ){ - fprintf(p->out,"%s%s",zSep, azArg[i]); - }else{ - if( zSep[0] ) fprintf(p->out,"%s",zSep); - output_quoted_string(p->out, azArg[i]); - } - } - fprintf(p->out,");\n"); - break; - } - } - return 0; -} - -/* -** This is the callback routine that the SQLite library -** invokes for each row of a query result. -*/ -static int callback(void *pArg, int nArg, char **azArg, char **azCol){ - /* since we don't have type info, call the shell_callback with a NULL value */ - return shell_callback(pArg, nArg, azArg, azCol, NULL); -} - -/* -** Set the destination table field of the callback_data structure to -** the name of the table given. Escape any quote characters in the -** table name. -*/ -static void set_table_name(struct callback_data *p, const char *zName){ - int i, n; - int needQuote; - char *z; - - if( p->zDestTable ){ - free(p->zDestTable); - p->zDestTable = 0; - } - if( zName==0 ) return; - needQuote = !isalpha((unsigned char)*zName) && *zName!='_'; - for(i=n=0; zName[i]; i++, n++){ - if( !isalnum((unsigned char)zName[i]) && zName[i]!='_' ){ - needQuote = 1; - if( zName[i]=='\'' ) n++; - } - } - if( needQuote ) n += 2; - z = p->zDestTable = malloc( n+1 ); - if( z==0 ){ - fprintf(stderr,"Error: out of memory\n"); - exit(1); - } - n = 0; - if( needQuote ) z[n++] = '\''; - for(i=0; zName[i]; i++){ - z[n++] = zName[i]; - if( zName[i]=='\'' ) z[n++] = '\''; - } - if( needQuote ) z[n++] = '\''; - z[n] = 0; -} - -/* zIn is either a pointer to a NULL-terminated string in memory obtained -** from malloc(), or a NULL pointer. The string pointed to by zAppend is -** added to zIn, and the result returned in memory obtained from malloc(). -** zIn, if it was not NULL, is freed. -** -** If the third argument, quote, is not '\0', then it is used as a -** quote character for zAppend. -*/ -static char *appendText(char *zIn, char const *zAppend, char quote){ - int len; - int i; - int nAppend = strlen30(zAppend); - int nIn = (zIn?strlen30(zIn):0); - - len = nAppend+nIn+1; - if( quote ){ - len += 2; - for(i=0; idb, zSelect, -1, &pSelect, 0); - if( rc!=SQLITE_OK || !pSelect ){ - fprintf(p->out, "/**** ERROR: (%d) %s *****/\n", rc, sqlite3_errmsg(p->db)); - p->nErr++; - return rc; - } - rc = sqlite3_step(pSelect); - while( rc==SQLITE_ROW ){ - if( zFirstRow ){ - fprintf(p->out, "%s", zFirstRow); - zFirstRow = 0; - } - fprintf(p->out, "%s;\n", sqlite3_column_text(pSelect, 0)); - rc = sqlite3_step(pSelect); - } - rc = sqlite3_finalize(pSelect); - if( rc!=SQLITE_OK ){ - fprintf(p->out, "/**** ERROR: (%d) %s *****/\n", rc, sqlite3_errmsg(p->db)); - p->nErr++; - } - return rc; -} - -/* -** Allocate space and save off current error string. -*/ -static char *save_err_msg( - sqlite3 *db /* Database to query */ -){ - int nErrMsg = 1+strlen30(sqlite3_errmsg(db)); - char *zErrMsg = sqlite3_malloc(nErrMsg); - if( zErrMsg ){ - memcpy(zErrMsg, sqlite3_errmsg(db), nErrMsg); - } - return zErrMsg; -} - -/* -** Display memory stats. -*/ -static int display_stats( - sqlite3 *db, /* Database to query */ - struct callback_data *pArg, /* Pointer to struct callback_data */ - int bReset /* True to reset the stats */ -){ - int iCur; - int iHiwtr; - - if( pArg && pArg->out ){ - - iHiwtr = iCur = -1; - sqlite3_status(SQLITE_STATUS_MEMORY_USED, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Memory Used: %d (max %d) bytes\n", iCur, iHiwtr); - iHiwtr = iCur = -1; - sqlite3_status(SQLITE_STATUS_MALLOC_COUNT, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Number of Outstanding Allocations: %d (max %d)\n", iCur, iHiwtr); -/* -** Not currently used by the CLI. -** iHiwtr = iCur = -1; -** sqlite3_status(SQLITE_STATUS_PAGECACHE_USED, &iCur, &iHiwtr, bReset); -** fprintf(pArg->out, "Number of Pcache Pages Used: %d (max %d) pages\n", iCur, iHiwtr); -*/ - iHiwtr = iCur = -1; - sqlite3_status(SQLITE_STATUS_PAGECACHE_OVERFLOW, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Number of Pcache Overflow Bytes: %d (max %d) bytes\n", iCur, iHiwtr); -/* -** Not currently used by the CLI. -** iHiwtr = iCur = -1; -** sqlite3_status(SQLITE_STATUS_SCRATCH_USED, &iCur, &iHiwtr, bReset); -** fprintf(pArg->out, "Number of Scratch Allocations Used: %d (max %d)\n", iCur, iHiwtr); -*/ - iHiwtr = iCur = -1; - sqlite3_status(SQLITE_STATUS_SCRATCH_OVERFLOW, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Number of Scratch Overflow Bytes: %d (max %d) bytes\n", iCur, iHiwtr); - iHiwtr = iCur = -1; - sqlite3_status(SQLITE_STATUS_MALLOC_SIZE, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Largest Allocation: %d bytes\n", iHiwtr); - iHiwtr = iCur = -1; - sqlite3_status(SQLITE_STATUS_PAGECACHE_SIZE, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Largest Pcache Allocation: %d bytes\n", iHiwtr); - iHiwtr = iCur = -1; - sqlite3_status(SQLITE_STATUS_SCRATCH_SIZE, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Largest Scratch Allocation: %d bytes\n", iHiwtr); -#ifdef YYTRACKMAXSTACKDEPTH - iHiwtr = iCur = -1; - sqlite3_status(SQLITE_STATUS_PARSER_STACK, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Deepest Parser Stack: %d (max %d)\n", iCur, iHiwtr); -#endif - } - - if( pArg && pArg->out && db ){ - iHiwtr = iCur = -1; - sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_USED, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Lookaside Slots Used: %d (max %d)\n", iCur, iHiwtr); - sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_HIT, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Successful lookaside attempts: %d\n", iHiwtr); - sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Lookaside failures due to size: %d\n", iHiwtr); - sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Lookaside failures due to OOM: %d\n", iHiwtr); - iHiwtr = iCur = -1; - sqlite3_db_status(db, SQLITE_DBSTATUS_CACHE_USED, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Pager Heap Usage: %d bytes\n", iCur); iHiwtr = iCur = -1; - sqlite3_db_status(db, SQLITE_DBSTATUS_CACHE_HIT, &iCur, &iHiwtr, 1); - fprintf(pArg->out, "Page cache hits: %d\n", iCur); - iHiwtr = iCur = -1; - sqlite3_db_status(db, SQLITE_DBSTATUS_CACHE_MISS, &iCur, &iHiwtr, 1); - fprintf(pArg->out, "Page cache misses: %d\n", iCur); - iHiwtr = iCur = -1; - sqlite3_db_status(db, SQLITE_DBSTATUS_SCHEMA_USED, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Schema Heap Usage: %d bytes\n", iCur); - iHiwtr = iCur = -1; - sqlite3_db_status(db, SQLITE_DBSTATUS_STMT_USED, &iCur, &iHiwtr, bReset); - fprintf(pArg->out, "Statement Heap/Lookaside Usage: %d bytes\n", iCur); - } - - if( pArg && pArg->out && db && pArg->pStmt ){ - iCur = sqlite3_stmt_status(pArg->pStmt, SQLITE_STMTSTATUS_FULLSCAN_STEP, bReset); - fprintf(pArg->out, "Fullscan Steps: %d\n", iCur); - iCur = sqlite3_stmt_status(pArg->pStmt, SQLITE_STMTSTATUS_SORT, bReset); - fprintf(pArg->out, "Sort Operations: %d\n", iCur); - iCur = sqlite3_stmt_status(pArg->pStmt, SQLITE_STMTSTATUS_AUTOINDEX, bReset); - fprintf(pArg->out, "Autoindex Inserts: %d\n", iCur); - } - - return 0; -} - -/* -** Execute a statement or set of statements. Print -** any result rows/columns depending on the current mode -** set via the supplied callback. -** -** This is very similar to SQLite's built-in sqlite3_exec() -** function except it takes a slightly different callback -** and callback data argument. -*/ -static int shell_exec( - sqlite3 *db, /* An open database */ - const char *zSql, /* SQL to be evaluated */ - int (*xCallback)(void*,int,char**,char**,int*), /* Callback function */ - /* (not the same as sqlite3_exec) */ - struct callback_data *pArg, /* Pointer to struct callback_data */ - char **pzErrMsg /* Error msg written here */ -){ - sqlite3_stmt *pStmt = NULL; /* Statement to execute. */ - int rc = SQLITE_OK; /* Return Code */ - int rc2; - const char *zLeftover; /* Tail of unprocessed SQL */ - - if( pzErrMsg ){ - *pzErrMsg = NULL; - } - - while( zSql[0] && (SQLITE_OK == rc) ){ - rc = sqlite3_prepare_v2(db, zSql, -1, &pStmt, &zLeftover); - if( SQLITE_OK != rc ){ - if( pzErrMsg ){ - *pzErrMsg = save_err_msg(db); - } - }else{ - if( !pStmt ){ - /* this happens for a comment or white-space */ - zSql = zLeftover; - while( IsSpace(zSql[0]) ) zSql++; - continue; - } - - /* save off the prepared statment handle and reset row count */ - if( pArg ){ - pArg->pStmt = pStmt; - pArg->cnt = 0; - } - - /* echo the sql statement if echo on */ - if( pArg && pArg->echoOn ){ - const char *zStmtSql = sqlite3_sql(pStmt); - fprintf(pArg->out, "%s\n", zStmtSql ? zStmtSql : zSql); - } - - /* perform the first step. this will tell us if we - ** have a result set or not and how wide it is. - */ - rc = sqlite3_step(pStmt); - /* if we have a result set... */ - if( SQLITE_ROW == rc ){ - /* if we have a callback... */ - if( xCallback ){ - /* allocate space for col name ptr, value ptr, and type */ - int nCol = sqlite3_column_count(pStmt); - void *pData = sqlite3_malloc(3*nCol*sizeof(const char*) + 1); - if( !pData ){ - rc = SQLITE_NOMEM; - }else{ - char **azCols = (char **)pData; /* Names of result columns */ - char **azVals = &azCols[nCol]; /* Results */ - int *aiTypes = (int *)&azVals[nCol]; /* Result types */ - int i; - assert(sizeof(int) <= sizeof(char *)); - /* save off ptrs to column names */ - for(i=0; istatsOn ){ - display_stats(db, pArg, 0); - } - - /* Finalize the statement just executed. If this fails, save a - ** copy of the error message. Otherwise, set zSql to point to the - ** next statement to execute. */ - rc2 = sqlite3_finalize(pStmt); - if( rc!=SQLITE_NOMEM ) rc = rc2; - if( rc==SQLITE_OK ){ - zSql = zLeftover; - while( IsSpace(zSql[0]) ) zSql++; - }else if( pzErrMsg ){ - *pzErrMsg = save_err_msg(db); - } - - /* clear saved stmt handle */ - if( pArg ){ - pArg->pStmt = NULL; - } - } - } /* end while */ - - return rc; -} - - -/* -** This is a different callback routine used for dumping the database. -** Each row received by this callback consists of a table name, -** the table type ("index" or "table") and SQL to create the table. -** This routine should print text sufficient to recreate the table. -*/ -static int dump_callback(void *pArg, int nArg, char **azArg, char **azCol){ - int rc; - const char *zTable; - const char *zType; - const char *zSql; - const char *zPrepStmt = 0; - struct callback_data *p = (struct callback_data *)pArg; - - UNUSED_PARAMETER(azCol); - if( nArg!=3 ) return 1; - zTable = azArg[0]; - zType = azArg[1]; - zSql = azArg[2]; - - if( strcmp(zTable, "sqlite_sequence")==0 ){ - zPrepStmt = "DELETE FROM sqlite_sequence;\n"; - }else if( strcmp(zTable, "sqlite_stat1")==0 ){ - fprintf(p->out, "ANALYZE sqlite_master;\n"); - }else if( strncmp(zTable, "sqlite_", 7)==0 ){ - return 0; - }else if( strncmp(zSql, "CREATE VIRTUAL TABLE", 20)==0 ){ - char *zIns; - if( !p->writableSchema ){ - fprintf(p->out, "PRAGMA writable_schema=ON;\n"); - p->writableSchema = 1; - } - zIns = sqlite3_mprintf( - "INSERT INTO sqlite_master(type,name,tbl_name,rootpage,sql)" - "VALUES('table','%q','%q',0,'%q');", - zTable, zTable, zSql); - fprintf(p->out, "%s\n", zIns); - sqlite3_free(zIns); - return 0; - }else{ - fprintf(p->out, "%s;\n", zSql); - } - - if( strcmp(zType, "table")==0 ){ - sqlite3_stmt *pTableInfo = 0; - char *zSelect = 0; - char *zTableInfo = 0; - char *zTmp = 0; - int nRow = 0; - - zTableInfo = appendText(zTableInfo, "PRAGMA table_info(", 0); - zTableInfo = appendText(zTableInfo, zTable, '"'); - zTableInfo = appendText(zTableInfo, ");", 0); - - rc = sqlite3_prepare(p->db, zTableInfo, -1, &pTableInfo, 0); - free(zTableInfo); - if( rc!=SQLITE_OK || !pTableInfo ){ - return 1; - } - - zSelect = appendText(zSelect, "SELECT 'INSERT INTO ' || ", 0); - zTmp = appendText(zTmp, zTable, '"'); - if( zTmp ){ - zSelect = appendText(zSelect, zTmp, '\''); - } - zSelect = appendText(zSelect, " || ' VALUES(' || ", 0); - rc = sqlite3_step(pTableInfo); - while( rc==SQLITE_ROW ){ - const char *zText = (const char *)sqlite3_column_text(pTableInfo, 1); - zSelect = appendText(zSelect, "quote(", 0); - zSelect = appendText(zSelect, zText, '"'); - rc = sqlite3_step(pTableInfo); - if( rc==SQLITE_ROW ){ - zSelect = appendText(zSelect, ") || ',' || ", 0); - }else{ - zSelect = appendText(zSelect, ") ", 0); - } - nRow++; - } - rc = sqlite3_finalize(pTableInfo); - if( rc!=SQLITE_OK || nRow==0 ){ - free(zSelect); - return 1; - } - zSelect = appendText(zSelect, "|| ')' FROM ", 0); - zSelect = appendText(zSelect, zTable, '"'); - - rc = run_table_dump_query(p, zSelect, zPrepStmt); - if( rc==SQLITE_CORRUPT ){ - zSelect = appendText(zSelect, " ORDER BY rowid DESC", 0); - run_table_dump_query(p, zSelect, 0); - } - if( zSelect ) free(zSelect); - } - return 0; -} - -/* -** Run zQuery. Use dump_callback() as the callback routine so that -** the contents of the query are output as SQL statements. -** -** If we get a SQLITE_CORRUPT error, rerun the query after appending -** "ORDER BY rowid DESC" to the end. -*/ -static int run_schema_dump_query( - struct callback_data *p, - const char *zQuery -){ - int rc; - char *zErr = 0; - rc = sqlite3_exec(p->db, zQuery, dump_callback, p, &zErr); - if( rc==SQLITE_CORRUPT ){ - char *zQ2; - int len = strlen30(zQuery); - fprintf(p->out, "/****** CORRUPTION ERROR *******/\n"); - if( zErr ){ - fprintf(p->out, "/****** %s ******/\n", zErr); - sqlite3_free(zErr); - zErr = 0; - } - zQ2 = malloc( len+100 ); - if( zQ2==0 ) return rc; - sqlite3_snprintf(sizeof(zQ2), zQ2, "%s ORDER BY rowid DESC", zQuery); - rc = sqlite3_exec(p->db, zQ2, dump_callback, p, &zErr); - if( rc ){ - fprintf(p->out, "/****** ERROR: %s ******/\n", zErr); - }else{ - rc = SQLITE_CORRUPT; - } - sqlite3_free(zErr); - free(zQ2); - } - return rc; -} - -/* -** Text of a help message -*/ -static char zHelp[] = - ".backup ?DB? FILE Backup DB (default \"main\") to FILE\n" - ".bail ON|OFF Stop after hitting an error. Default OFF\n" - ".databases List names and files of attached databases\n" - ".dump ?TABLE? ... Dump the database in an SQL text format\n" - " If TABLE specified, only dump tables matching\n" - " LIKE pattern TABLE.\n" - ".echo ON|OFF Turn command echo on or off\n" - ".exit Exit this program\n" - ".explain ?ON|OFF? Turn output mode suitable for EXPLAIN on or off.\n" - " With no args, it turns EXPLAIN on.\n" - ".header(s) ON|OFF Turn display of headers on or off\n" - ".help Show this message\n" - ".import FILE TABLE Import data from FILE into TABLE\n" - ".indices ?TABLE? Show names of all indices\n" - " If TABLE specified, only show indices for tables\n" - " matching LIKE pattern TABLE.\n" -#ifdef SQLITE_ENABLE_IOTRACE - ".iotrace FILE Enable I/O diagnostic logging to FILE\n" -#endif -#ifndef SQLITE_OMIT_LOAD_EXTENSION - ".load FILE ?ENTRY? Load an extension library\n" -#endif - ".log FILE|off Turn logging on or off. FILE can be stderr/stdout\n" - ".mode MODE ?TABLE? Set output mode where MODE is one of:\n" - " csv Comma-separated values\n" - " column Left-aligned columns. (See .width)\n" - " html HTML
    "); - output_html_string(p->out, azCol[i]); - fprintf(p->out,"
    "); - output_html_string(p->out, azArg[i] ? azArg[i] : p->nullvalue); - fprintf(p->out,"
    code\n" - " insert SQL insert statements for TABLE\n" - " line One value per line\n" - " list Values delimited by .separator string\n" - " tabs Tab-separated values\n" - " tcl TCL list elements\n" - ".nullvalue STRING Print STRING in place of NULL values\n" - ".output FILENAME Send output to FILENAME\n" - ".output stdout Send output to the screen\n" - ".prompt MAIN CONTINUE Replace the standard prompts\n" - ".quit Exit this program\n" - ".read FILENAME Execute SQL in FILENAME\n" - ".restore ?DB? FILE Restore content of DB (default \"main\") from FILE\n" - ".schema ?TABLE? Show the CREATE statements\n" - " If TABLE specified, only show tables matching\n" - " LIKE pattern TABLE.\n" - ".separator STRING Change separator used by output mode and .import\n" - ".show Show the current values for various settings\n" - ".stats ON|OFF Turn stats on or off\n" - ".tables ?TABLE? List names of tables\n" - " If TABLE specified, only list tables matching\n" - " LIKE pattern TABLE.\n" - ".timeout MS Try opening locked tables for MS milliseconds\n" - ".width NUM1 NUM2 ... Set column widths for \"column\" mode\n" -; - -static char zTimerHelp[] = - ".timer ON|OFF Turn the CPU timer measurement on or off\n" -; - -/* Forward reference */ -static int process_input(struct callback_data *p, FILE *in); - -/* -** Make sure the database is open. If it is not, then open it. If -** the database fails to open, print an error message and exit. -*/ -static void open_db(struct callback_data *p){ - if( p->db==0 ){ - sqlite3_open(p->zDbFilename, &p->db); - db = p->db; - if( db && sqlite3_errcode(db)==SQLITE_OK ){ - sqlite3_create_function(db, "shellstatic", 0, SQLITE_UTF8, 0, - shellstaticFunc, 0, 0); - } - if( db==0 || SQLITE_OK!=sqlite3_errcode(db) ){ - fprintf(stderr,"Error: unable to open database \"%s\": %s\n", - p->zDbFilename, sqlite3_errmsg(db)); - exit(1); - } -#ifndef SQLITE_OMIT_LOAD_EXTENSION - sqlite3_enable_load_extension(p->db, 1); -#endif - } -} - -/* -** Do C-language style dequoting. -** -** \t -> tab -** \n -> newline -** \r -> carriage return -** \NNN -> ascii character NNN in octal -** \\ -> backslash -*/ -static void resolve_backslashes(char *z){ - int i, j; - char c; - for(i=j=0; (c = z[i])!=0; i++, j++){ - if( c=='\\' ){ - c = z[++i]; - if( c=='n' ){ - c = '\n'; - }else if( c=='t' ){ - c = '\t'; - }else if( c=='r' ){ - c = '\r'; - }else if( c>='0' && c<='7' ){ - c -= '0'; - if( z[i+1]>='0' && z[i+1]<='7' ){ - i++; - c = (c<<3) + z[i] - '0'; - if( z[i+1]>='0' && z[i+1]<='7' ){ - i++; - c = (c<<3) + z[i] - '0'; - } - } - } - } - z[j] = c; - } - z[j] = 0; -} - -/* -** Interpret zArg as a boolean value. Return either 0 or 1. -*/ -static int booleanValue(char *zArg){ - int val = atoi(zArg); - int j; - for(j=0; zArg[j]; j++){ - zArg[j] = ToLower(zArg[j]); - } - if( strcmp(zArg,"on")==0 ){ - val = 1; - }else if( strcmp(zArg,"yes")==0 ){ - val = 1; - } - return val; -} - -/* -** If an input line begins with "." then invoke this routine to -** process that line. -** -** Return 1 on error, 2 to exit, and 0 otherwise. -*/ -static int do_meta_command(char *zLine, struct callback_data *p){ - int i = 1; - int nArg = 0; - int n, c; - int rc = 0; - char *azArg[50]; - - /* Parse the input line into tokens. - */ - while( zLine[i] && nArg=3 && strncmp(azArg[0], "backup", n)==0 && nArg>1 && nArg<4){ - const char *zDestFile; - const char *zDb; - sqlite3 *pDest; - sqlite3_backup *pBackup; - if( nArg==2 ){ - zDestFile = azArg[1]; - zDb = "main"; - }else{ - zDestFile = azArg[2]; - zDb = azArg[1]; - } - rc = sqlite3_open(zDestFile, &pDest); - if( rc!=SQLITE_OK ){ - fprintf(stderr, "Error: cannot open \"%s\"\n", zDestFile); - sqlite3_close(pDest); - return 1; - } - open_db(p); - pBackup = sqlite3_backup_init(pDest, "main", p->db, zDb); - if( pBackup==0 ){ - fprintf(stderr, "Error: %s\n", sqlite3_errmsg(pDest)); - sqlite3_close(pDest); - return 1; - } - while( (rc = sqlite3_backup_step(pBackup,100))==SQLITE_OK ){} - sqlite3_backup_finish(pBackup); - if( rc==SQLITE_DONE ){ - rc = 0; - }else{ - fprintf(stderr, "Error: %s\n", sqlite3_errmsg(pDest)); - rc = 1; - } - sqlite3_close(pDest); - }else - - if( c=='b' && n>=3 && strncmp(azArg[0], "bail", n)==0 && nArg>1 && nArg<3 ){ - bail_on_error = booleanValue(azArg[1]); - }else - - if( c=='d' && n>1 && strncmp(azArg[0], "databases", n)==0 && nArg==1 ){ - struct callback_data data; - char *zErrMsg = 0; - open_db(p); - memcpy(&data, p, sizeof(data)); - data.showHeader = 1; - data.mode = MODE_Column; - data.colWidth[0] = 3; - data.colWidth[1] = 15; - data.colWidth[2] = 58; - data.cnt = 0; - sqlite3_exec(p->db, "PRAGMA database_list; ", callback, &data, &zErrMsg); - if( zErrMsg ){ - fprintf(stderr,"Error: %s\n", zErrMsg); - sqlite3_free(zErrMsg); - rc = 1; - } - }else - - if( c=='d' && strncmp(azArg[0], "dump", n)==0 && nArg<3 ){ - open_db(p); - /* When playing back a "dump", the content might appear in an order - ** which causes immediate foreign key constraints to be violated. - ** So disable foreign-key constraint enforcement to prevent problems. */ - fprintf(p->out, "PRAGMA foreign_keys=OFF;\n"); - fprintf(p->out, "BEGIN TRANSACTION;\n"); - p->writableSchema = 0; - sqlite3_exec(p->db, "SAVEPOINT dump; PRAGMA writable_schema=ON", 0, 0, 0); - p->nErr = 0; - if( nArg==1 ){ - run_schema_dump_query(p, - "SELECT name, type, sql FROM sqlite_master " - "WHERE sql NOT NULL AND type=='table' AND name!='sqlite_sequence'" - ); - run_schema_dump_query(p, - "SELECT name, type, sql FROM sqlite_master " - "WHERE name=='sqlite_sequence'" - ); - run_table_dump_query(p, - "SELECT sql FROM sqlite_master " - "WHERE sql NOT NULL AND type IN ('index','trigger','view')", 0 - ); - }else{ - int i; - for(i=1; iwritableSchema ){ - fprintf(p->out, "PRAGMA writable_schema=OFF;\n"); - p->writableSchema = 0; - } - sqlite3_exec(p->db, "PRAGMA writable_schema=OFF;", 0, 0, 0); - sqlite3_exec(p->db, "RELEASE dump;", 0, 0, 0); - fprintf(p->out, p->nErr ? "ROLLBACK; -- due to errors\n" : "COMMIT;\n"); - }else - - if( c=='e' && strncmp(azArg[0], "echo", n)==0 && nArg>1 && nArg<3 ){ - p->echoOn = booleanValue(azArg[1]); - }else - - if( c=='e' && strncmp(azArg[0], "exit", n)==0 && nArg==1 ){ - rc = 2; - }else - - if( c=='e' && strncmp(azArg[0], "explain", n)==0 && nArg<3 ){ - int val = nArg>=2 ? booleanValue(azArg[1]) : 1; - if(val == 1) { - if(!p->explainPrev.valid) { - p->explainPrev.valid = 1; - p->explainPrev.mode = p->mode; - p->explainPrev.showHeader = p->showHeader; - memcpy(p->explainPrev.colWidth,p->colWidth,sizeof(p->colWidth)); - } - /* We could put this code under the !p->explainValid - ** condition so that it does not execute if we are already in - ** explain mode. However, always executing it allows us an easy - ** was to reset to explain mode in case the user previously - ** did an .explain followed by a .width, .mode or .header - ** command. - */ - p->mode = MODE_Explain; - p->showHeader = 1; - memset(p->colWidth,0,ArraySize(p->colWidth)); - p->colWidth[0] = 4; /* addr */ - p->colWidth[1] = 13; /* opcode */ - p->colWidth[2] = 4; /* P1 */ - p->colWidth[3] = 4; /* P2 */ - p->colWidth[4] = 4; /* P3 */ - p->colWidth[5] = 13; /* P4 */ - p->colWidth[6] = 2; /* P5 */ - p->colWidth[7] = 13; /* Comment */ - }else if (p->explainPrev.valid) { - p->explainPrev.valid = 0; - p->mode = p->explainPrev.mode; - p->showHeader = p->explainPrev.showHeader; - memcpy(p->colWidth,p->explainPrev.colWidth,sizeof(p->colWidth)); - } - }else - - if( c=='h' && (strncmp(azArg[0], "header", n)==0 || - strncmp(azArg[0], "headers", n)==0) && nArg>1 && nArg<3 ){ - p->showHeader = booleanValue(azArg[1]); - }else - - if( c=='h' && strncmp(azArg[0], "help", n)==0 ){ - fprintf(stderr,"%s",zHelp); - if( HAS_TIMER ){ - fprintf(stderr,"%s",zTimerHelp); - } - }else - - if( c=='i' && strncmp(azArg[0], "import", n)==0 && nArg==3 ){ - char *zTable = azArg[2]; /* Insert data into this table */ - char *zFile = azArg[1]; /* The file from which to extract data */ - sqlite3_stmt *pStmt = NULL; /* A statement */ - int nCol; /* Number of columns in the table */ - int nByte; /* Number of bytes in an SQL string */ - int i, j; /* Loop counters */ - int nSep; /* Number of bytes in p->separator[] */ - char *zSql; /* An SQL statement */ - char *zLine; /* A single line of input from the file */ - char **azCol; /* zLine[] broken up into columns */ - char *zCommit; /* How to commit changes */ - FILE *in; /* The input file */ - int lineno = 0; /* Line number of input file */ - - open_db(p); - nSep = strlen30(p->separator); - if( nSep==0 ){ - fprintf(stderr, "Error: non-null separator required for import\n"); - return 1; - } - zSql = sqlite3_mprintf("SELECT * FROM %s", zTable); - if( zSql==0 ){ - fprintf(stderr, "Error: out of memory\n"); - return 1; - } - nByte = strlen30(zSql); - rc = sqlite3_prepare(p->db, zSql, -1, &pStmt, 0); - sqlite3_free(zSql); - if( rc ){ - if (pStmt) sqlite3_finalize(pStmt); - fprintf(stderr,"Error: %s\n", sqlite3_errmsg(db)); - return 1; - } - nCol = sqlite3_column_count(pStmt); - sqlite3_finalize(pStmt); - pStmt = 0; - if( nCol==0 ) return 0; /* no columns, no error */ - zSql = malloc( nByte + 20 + nCol*2 ); - if( zSql==0 ){ - fprintf(stderr, "Error: out of memory\n"); - return 1; - } - sqlite3_snprintf(nByte+20, zSql, "INSERT INTO %s VALUES(?", zTable); - j = strlen30(zSql); - for(i=1; idb, zSql, -1, &pStmt, 0); - free(zSql); - if( rc ){ - fprintf(stderr, "Error: %s\n", sqlite3_errmsg(db)); - if (pStmt) sqlite3_finalize(pStmt); - return 1; - } - in = fopen(zFile, "rb"); - if( in==0 ){ - fprintf(stderr, "Error: cannot open \"%s\"\n", zFile); - sqlite3_finalize(pStmt); - return 1; - } - azCol = malloc( sizeof(azCol[0])*(nCol+1) ); - if( azCol==0 ){ - fprintf(stderr, "Error: out of memory\n"); - fclose(in); - sqlite3_finalize(pStmt); - return 1; - } - sqlite3_exec(p->db, "BEGIN", 0, 0, 0); - zCommit = "COMMIT"; - while( (zLine = local_getline(0, in))!=0 ){ - char *z; - lineno++; - azCol[0] = zLine; - for(i=0, z=zLine; *z && *z!='\n' && *z!='\r'; z++){ - if( *z==p->separator[0] && strncmp(z, p->separator, nSep)==0 ){ - *z = 0; - i++; - if( idb, zCommit, 0, 0, 0); - }else - - if( c=='i' && strncmp(azArg[0], "indices", n)==0 && nArg<3 ){ - struct callback_data data; - char *zErrMsg = 0; - open_db(p); - memcpy(&data, p, sizeof(data)); - data.showHeader = 0; - data.mode = MODE_List; - if( nArg==1 ){ - rc = sqlite3_exec(p->db, - "SELECT name FROM sqlite_master " - "WHERE type='index' AND name NOT LIKE 'sqlite_%' " - "UNION ALL " - "SELECT name FROM sqlite_temp_master " - "WHERE type='index' " - "ORDER BY 1", - callback, &data, &zErrMsg - ); - }else{ - zShellStatic = azArg[1]; - rc = sqlite3_exec(p->db, - "SELECT name FROM sqlite_master " - "WHERE type='index' AND tbl_name LIKE shellstatic() " - "UNION ALL " - "SELECT name FROM sqlite_temp_master " - "WHERE type='index' AND tbl_name LIKE shellstatic() " - "ORDER BY 1", - callback, &data, &zErrMsg - ); - zShellStatic = 0; - } - if( zErrMsg ){ - fprintf(stderr,"Error: %s\n", zErrMsg); - sqlite3_free(zErrMsg); - rc = 1; - }else if( rc != SQLITE_OK ){ - fprintf(stderr,"Error: querying sqlite_master and sqlite_temp_master\n"); - rc = 1; - } - }else - -#ifdef SQLITE_ENABLE_IOTRACE - if( c=='i' && strncmp(azArg[0], "iotrace", n)==0 ){ - extern void (*sqlite3IoTrace)(const char*, ...); - if( iotrace && iotrace!=stdout ) fclose(iotrace); - iotrace = 0; - if( nArg<2 ){ - sqlite3IoTrace = 0; - }else if( strcmp(azArg[1], "-")==0 ){ - sqlite3IoTrace = iotracePrintf; - iotrace = stdout; - }else{ - iotrace = fopen(azArg[1], "w"); - if( iotrace==0 ){ - fprintf(stderr, "Error: cannot open \"%s\"\n", azArg[1]); - sqlite3IoTrace = 0; - rc = 1; - }else{ - sqlite3IoTrace = iotracePrintf; - } - } - }else -#endif - -#ifndef SQLITE_OMIT_LOAD_EXTENSION - if( c=='l' && strncmp(azArg[0], "load", n)==0 && nArg>=2 ){ - const char *zFile, *zProc; - char *zErrMsg = 0; - zFile = azArg[1]; - zProc = nArg>=3 ? azArg[2] : 0; - open_db(p); - rc = sqlite3_load_extension(p->db, zFile, zProc, &zErrMsg); - if( rc!=SQLITE_OK ){ - fprintf(stderr, "Error: %s\n", zErrMsg); - sqlite3_free(zErrMsg); - rc = 1; - } - }else -#endif - - if( c=='l' && strncmp(azArg[0], "log", n)==0 && nArg>=2 ){ - const char *zFile = azArg[1]; - if( p->pLog && p->pLog!=stdout && p->pLog!=stderr ){ - fclose(p->pLog); - p->pLog = 0; - } - if( strcmp(zFile,"stdout")==0 ){ - p->pLog = stdout; - }else if( strcmp(zFile, "stderr")==0 ){ - p->pLog = stderr; - }else if( strcmp(zFile, "off")==0 ){ - p->pLog = 0; - }else{ - p->pLog = fopen(zFile, "w"); - if( p->pLog==0 ){ - fprintf(stderr, "Error: cannot open \"%s\"\n", zFile); - } - } - }else - - if( c=='m' && strncmp(azArg[0], "mode", n)==0 && nArg==2 ){ - int n2 = strlen30(azArg[1]); - if( (n2==4 && strncmp(azArg[1],"line",n2)==0) - || - (n2==5 && strncmp(azArg[1],"lines",n2)==0) ){ - p->mode = MODE_Line; - }else if( (n2==6 && strncmp(azArg[1],"column",n2)==0) - || - (n2==7 && strncmp(azArg[1],"columns",n2)==0) ){ - p->mode = MODE_Column; - }else if( n2==4 && strncmp(azArg[1],"list",n2)==0 ){ - p->mode = MODE_List; - }else if( n2==4 && strncmp(azArg[1],"html",n2)==0 ){ - p->mode = MODE_Html; - }else if( n2==3 && strncmp(azArg[1],"tcl",n2)==0 ){ - p->mode = MODE_Tcl; - }else if( n2==3 && strncmp(azArg[1],"csv",n2)==0 ){ - p->mode = MODE_Csv; - sqlite3_snprintf(sizeof(p->separator), p->separator, ","); - }else if( n2==4 && strncmp(azArg[1],"tabs",n2)==0 ){ - p->mode = MODE_List; - sqlite3_snprintf(sizeof(p->separator), p->separator, "\t"); - }else if( n2==6 && strncmp(azArg[1],"insert",n2)==0 ){ - p->mode = MODE_Insert; - set_table_name(p, "table"); - }else { - fprintf(stderr,"Error: mode should be one of: " - "column csv html insert line list tabs tcl\n"); - rc = 1; - } - }else - - if( c=='m' && strncmp(azArg[0], "mode", n)==0 && nArg==3 ){ - int n2 = strlen30(azArg[1]); - if( n2==6 && strncmp(azArg[1],"insert",n2)==0 ){ - p->mode = MODE_Insert; - set_table_name(p, azArg[2]); - }else { - fprintf(stderr, "Error: invalid arguments: " - " \"%s\". Enter \".help\" for help\n", azArg[2]); - rc = 1; - } - }else - - if( c=='n' && strncmp(azArg[0], "nullvalue", n)==0 && nArg==2 ) { - sqlite3_snprintf(sizeof(p->nullvalue), p->nullvalue, - "%.*s", (int)ArraySize(p->nullvalue)-1, azArg[1]); - }else - - if( c=='o' && strncmp(azArg[0], "output", n)==0 && nArg==2 ){ - if( p->out!=stdout ){ - fclose(p->out); - } - if( strcmp(azArg[1],"stdout")==0 ){ - p->out = stdout; - sqlite3_snprintf(sizeof(p->outfile), p->outfile, "stdout"); - }else{ - p->out = fopen(azArg[1], "wb"); - if( p->out==0 ){ - fprintf(stderr,"Error: cannot write to \"%s\"\n", azArg[1]); - p->out = stdout; - rc = 1; - } else { - sqlite3_snprintf(sizeof(p->outfile), p->outfile, "%s", azArg[1]); - } - } - }else - - if( c=='p' && strncmp(azArg[0], "prompt", n)==0 && (nArg==2 || nArg==3)){ - if( nArg >= 2) { - strncpy(mainPrompt,azArg[1],(int)ArraySize(mainPrompt)-1); - } - if( nArg >= 3) { - strncpy(continuePrompt,azArg[2],(int)ArraySize(continuePrompt)-1); - } - }else - - if( c=='q' && strncmp(azArg[0], "quit", n)==0 && nArg==1 ){ - rc = 2; - }else - - if( c=='r' && n>=3 && strncmp(azArg[0], "read", n)==0 && nArg==2 ){ - FILE *alt = fopen(azArg[1], "rb"); - if( alt==0 ){ - fprintf(stderr,"Error: cannot open \"%s\"\n", azArg[1]); - rc = 1; - }else{ - rc = process_input(p, alt); - fclose(alt); - } - }else - - if( c=='r' && n>=3 && strncmp(azArg[0], "restore", n)==0 && nArg>1 && nArg<4){ - const char *zSrcFile; - const char *zDb; - sqlite3 *pSrc; - sqlite3_backup *pBackup; - int nTimeout = 0; - - if( nArg==2 ){ - zSrcFile = azArg[1]; - zDb = "main"; - }else{ - zSrcFile = azArg[2]; - zDb = azArg[1]; - } - rc = sqlite3_open(zSrcFile, &pSrc); - if( rc!=SQLITE_OK ){ - fprintf(stderr, "Error: cannot open \"%s\"\n", zSrcFile); - sqlite3_close(pSrc); - return 1; - } - open_db(p); - pBackup = sqlite3_backup_init(p->db, zDb, pSrc, "main"); - if( pBackup==0 ){ - fprintf(stderr, "Error: %s\n", sqlite3_errmsg(p->db)); - sqlite3_close(pSrc); - return 1; - } - while( (rc = sqlite3_backup_step(pBackup,100))==SQLITE_OK - || rc==SQLITE_BUSY ){ - if( rc==SQLITE_BUSY ){ - if( nTimeout++ >= 3 ) break; - sqlite3_sleep(100); - } - } - sqlite3_backup_finish(pBackup); - if( rc==SQLITE_DONE ){ - rc = 0; - }else if( rc==SQLITE_BUSY || rc==SQLITE_LOCKED ){ - fprintf(stderr, "Error: source database is busy\n"); - rc = 1; - }else{ - fprintf(stderr, "Error: %s\n", sqlite3_errmsg(p->db)); - rc = 1; - } - sqlite3_close(pSrc); - }else - - if( c=='s' && strncmp(azArg[0], "schema", n)==0 && nArg<3 ){ - struct callback_data data; - char *zErrMsg = 0; - open_db(p); - memcpy(&data, p, sizeof(data)); - data.showHeader = 0; - data.mode = MODE_Semi; - if( nArg>1 ){ - int i; - for(i=0; azArg[1][i]; i++) azArg[1][i] = ToLower(azArg[1][i]); - if( strcmp(azArg[1],"sqlite_master")==0 ){ - char *new_argv[2], *new_colv[2]; - new_argv[0] = "CREATE TABLE sqlite_master (\n" - " type text,\n" - " name text,\n" - " tbl_name text,\n" - " rootpage integer,\n" - " sql text\n" - ")"; - new_argv[1] = 0; - new_colv[0] = "sql"; - new_colv[1] = 0; - callback(&data, 1, new_argv, new_colv); - rc = SQLITE_OK; - }else if( strcmp(azArg[1],"sqlite_temp_master")==0 ){ - char *new_argv[2], *new_colv[2]; - new_argv[0] = "CREATE TEMP TABLE sqlite_temp_master (\n" - " type text,\n" - " name text,\n" - " tbl_name text,\n" - " rootpage integer,\n" - " sql text\n" - ")"; - new_argv[1] = 0; - new_colv[0] = "sql"; - new_colv[1] = 0; - callback(&data, 1, new_argv, new_colv); - rc = SQLITE_OK; - }else{ - zShellStatic = azArg[1]; - rc = sqlite3_exec(p->db, - "SELECT sql FROM " - " (SELECT sql sql, type type, tbl_name tbl_name, name name" - " FROM sqlite_master UNION ALL" - " SELECT sql, type, tbl_name, name FROM sqlite_temp_master) " - "WHERE tbl_name LIKE shellstatic() AND type!='meta' AND sql NOTNULL " - "ORDER BY substr(type,2,1), name", - callback, &data, &zErrMsg); - zShellStatic = 0; - } - }else{ - rc = sqlite3_exec(p->db, - "SELECT sql FROM " - " (SELECT sql sql, type type, tbl_name tbl_name, name name" - " FROM sqlite_master UNION ALL" - " SELECT sql, type, tbl_name, name FROM sqlite_temp_master) " - "WHERE type!='meta' AND sql NOTNULL AND name NOT LIKE 'sqlite_%'" - "ORDER BY substr(type,2,1), name", - callback, &data, &zErrMsg - ); - } - if( zErrMsg ){ - fprintf(stderr,"Error: %s\n", zErrMsg); - sqlite3_free(zErrMsg); - rc = 1; - }else if( rc != SQLITE_OK ){ - fprintf(stderr,"Error: querying schema information\n"); - rc = 1; - }else{ - rc = 0; - } - }else - - if( c=='s' && strncmp(azArg[0], "separator", n)==0 && nArg==2 ){ - sqlite3_snprintf(sizeof(p->separator), p->separator, - "%.*s", (int)sizeof(p->separator)-1, azArg[1]); - }else - - if( c=='s' && strncmp(azArg[0], "show", n)==0 && nArg==1 ){ - int i; - fprintf(p->out,"%9.9s: %s\n","echo", p->echoOn ? "on" : "off"); - fprintf(p->out,"%9.9s: %s\n","explain", p->explainPrev.valid ? "on" :"off"); - fprintf(p->out,"%9.9s: %s\n","headers", p->showHeader ? "on" : "off"); - fprintf(p->out,"%9.9s: %s\n","mode", modeDescr[p->mode]); - fprintf(p->out,"%9.9s: ", "nullvalue"); - output_c_string(p->out, p->nullvalue); - fprintf(p->out, "\n"); - fprintf(p->out,"%9.9s: %s\n","output", - strlen30(p->outfile) ? p->outfile : "stdout"); - fprintf(p->out,"%9.9s: ", "separator"); - output_c_string(p->out, p->separator); - fprintf(p->out, "\n"); - fprintf(p->out,"%9.9s: %s\n","stats", p->statsOn ? "on" : "off"); - fprintf(p->out,"%9.9s: ","width"); - for (i=0;i<(int)ArraySize(p->colWidth) && p->colWidth[i] != 0;i++) { - fprintf(p->out,"%d ",p->colWidth[i]); - } - fprintf(p->out,"\n"); - }else - - if( c=='s' && strncmp(azArg[0], "stats", n)==0 && nArg>1 && nArg<3 ){ - p->statsOn = booleanValue(azArg[1]); - }else - - if( c=='t' && n>1 && strncmp(azArg[0], "tables", n)==0 && nArg<3 ){ - char **azResult; - int nRow; - char *zErrMsg; - open_db(p); - if( nArg==1 ){ - rc = sqlite3_get_table(p->db, - "SELECT name FROM sqlite_master " - "WHERE type IN ('table','view') AND name NOT LIKE 'sqlite_%' " - "UNION ALL " - "SELECT name FROM sqlite_temp_master " - "WHERE type IN ('table','view') " - "ORDER BY 1", - &azResult, &nRow, 0, &zErrMsg - ); - }else{ - zShellStatic = azArg[1]; - rc = sqlite3_get_table(p->db, - "SELECT name FROM sqlite_master " - "WHERE type IN ('table','view') AND name LIKE shellstatic() " - "UNION ALL " - "SELECT name FROM sqlite_temp_master " - "WHERE type IN ('table','view') AND name LIKE shellstatic() " - "ORDER BY 1", - &azResult, &nRow, 0, &zErrMsg - ); - zShellStatic = 0; - } - if( zErrMsg ){ - fprintf(stderr,"Error: %s\n", zErrMsg); - sqlite3_free(zErrMsg); - rc = 1; - }else if( rc != SQLITE_OK ){ - fprintf(stderr,"Error: querying sqlite_master and sqlite_temp_master\n"); - rc = 1; - }else{ - int len, maxlen = 0; - int i, j; - int nPrintCol, nPrintRow; - for(i=1; i<=nRow; i++){ - if( azResult[i]==0 ) continue; - len = strlen30(azResult[i]); - if( len>maxlen ) maxlen = len; - } - nPrintCol = 80/(maxlen+2); - if( nPrintCol<1 ) nPrintCol = 1; - nPrintRow = (nRow + nPrintCol - 1)/nPrintCol; - for(i=0; i=8 && strncmp(azArg[0], "testctrl", n)==0 && nArg>=2 ){ - static const struct { - const char *zCtrlName; /* Name of a test-control option */ - int ctrlCode; /* Integer code for that option */ - } aCtrl[] = { - { "prng_save", SQLITE_TESTCTRL_PRNG_SAVE }, - { "prng_restore", SQLITE_TESTCTRL_PRNG_RESTORE }, - { "prng_reset", SQLITE_TESTCTRL_PRNG_RESET }, - { "bitvec_test", SQLITE_TESTCTRL_BITVEC_TEST }, - { "fault_install", SQLITE_TESTCTRL_FAULT_INSTALL }, - { "benign_malloc_hooks", SQLITE_TESTCTRL_BENIGN_MALLOC_HOOKS }, - { "pending_byte", SQLITE_TESTCTRL_PENDING_BYTE }, - { "assert", SQLITE_TESTCTRL_ASSERT }, - { "always", SQLITE_TESTCTRL_ALWAYS }, - { "reserve", SQLITE_TESTCTRL_RESERVE }, - { "optimizations", SQLITE_TESTCTRL_OPTIMIZATIONS }, - { "iskeyword", SQLITE_TESTCTRL_ISKEYWORD }, - { "pghdrsz", SQLITE_TESTCTRL_PGHDRSZ }, - { "scratchmalloc", SQLITE_TESTCTRL_SCRATCHMALLOC }, - }; - int testctrl = -1; - int rc = 0; - int i, n; - open_db(p); - - /* convert testctrl text option to value. allow any unique prefix - ** of the option name, or a numerical value. */ - n = strlen30(azArg[1]); - for(i=0; i<(int)(sizeof(aCtrl)/sizeof(aCtrl[0])); i++){ - if( strncmp(azArg[1], aCtrl[i].zCtrlName, n)==0 ){ - if( testctrl<0 ){ - testctrl = aCtrl[i].ctrlCode; - }else{ - fprintf(stderr, "ambiguous option name: \"%s\"\n", azArg[1]); - testctrl = -1; - break; - } - } - } - if( testctrl<0 ) testctrl = atoi(azArg[1]); - if( (testctrlSQLITE_TESTCTRL_LAST) ){ - fprintf(stderr,"Error: invalid testctrl option: %s\n", azArg[1]); - }else{ - switch(testctrl){ - - /* sqlite3_test_control(int, db, int) */ - case SQLITE_TESTCTRL_OPTIMIZATIONS: - case SQLITE_TESTCTRL_RESERVE: - if( nArg==3 ){ - int opt = (int)strtol(azArg[2], 0, 0); - rc = sqlite3_test_control(testctrl, p->db, opt); - printf("%d (0x%08x)\n", rc, rc); - } else { - fprintf(stderr,"Error: testctrl %s takes a single int option\n", - azArg[1]); - } - break; - - /* sqlite3_test_control(int) */ - case SQLITE_TESTCTRL_PRNG_SAVE: - case SQLITE_TESTCTRL_PRNG_RESTORE: - case SQLITE_TESTCTRL_PRNG_RESET: - case SQLITE_TESTCTRL_PGHDRSZ: - if( nArg==2 ){ - rc = sqlite3_test_control(testctrl); - printf("%d (0x%08x)\n", rc, rc); - } else { - fprintf(stderr,"Error: testctrl %s takes no options\n", azArg[1]); - } - break; - - /* sqlite3_test_control(int, uint) */ - case SQLITE_TESTCTRL_PENDING_BYTE: - if( nArg==3 ){ - unsigned int opt = (unsigned int)atoi(azArg[2]); - rc = sqlite3_test_control(testctrl, opt); - printf("%d (0x%08x)\n", rc, rc); - } else { - fprintf(stderr,"Error: testctrl %s takes a single unsigned" - " int option\n", azArg[1]); - } - break; - - /* sqlite3_test_control(int, int) */ - case SQLITE_TESTCTRL_ASSERT: - case SQLITE_TESTCTRL_ALWAYS: - if( nArg==3 ){ - int opt = atoi(azArg[2]); - rc = sqlite3_test_control(testctrl, opt); - printf("%d (0x%08x)\n", rc, rc); - } else { - fprintf(stderr,"Error: testctrl %s takes a single int option\n", - azArg[1]); - } - break; - - /* sqlite3_test_control(int, char *) */ -#ifdef SQLITE_N_KEYWORD - case SQLITE_TESTCTRL_ISKEYWORD: - if( nArg==3 ){ - const char *opt = azArg[2]; - rc = sqlite3_test_control(testctrl, opt); - printf("%d (0x%08x)\n", rc, rc); - } else { - fprintf(stderr,"Error: testctrl %s takes a single char * option\n", - azArg[1]); - } - break; -#endif - - case SQLITE_TESTCTRL_BITVEC_TEST: - case SQLITE_TESTCTRL_FAULT_INSTALL: - case SQLITE_TESTCTRL_BENIGN_MALLOC_HOOKS: - case SQLITE_TESTCTRL_SCRATCHMALLOC: - default: - fprintf(stderr,"Error: CLI support for testctrl %s not implemented\n", - azArg[1]); - break; - } - } - }else - - if( c=='t' && n>4 && strncmp(azArg[0], "timeout", n)==0 && nArg==2 ){ - open_db(p); - sqlite3_busy_timeout(p->db, atoi(azArg[1])); - }else - - if( HAS_TIMER && c=='t' && n>=5 && strncmp(azArg[0], "timer", n)==0 - && nArg==2 - ){ - enableTimer = booleanValue(azArg[1]); - }else - - if( c=='v' && strncmp(azArg[0], "version", n)==0 ){ - printf("SQLite %s %s\n", - sqlite3_libversion(), sqlite3_sourceid()); - }else - - if( c=='w' && strncmp(azArg[0], "width", n)==0 && nArg>1 ){ - int j; - assert( nArg<=ArraySize(azArg) ); - for(j=1; jcolWidth); j++){ - p->colWidth[j-1] = atoi(azArg[j]); - } - }else - - { - fprintf(stderr, "Error: unknown command or invalid arguments: " - " \"%s\". Enter \".help\" for help\n", azArg[0]); - rc = 1; - } - - return rc; -} - -/* -** Return TRUE if a semicolon occurs anywhere in the first N characters -** of string z[]. -*/ -static int _contains_semicolon(const char *z, int N){ - int i; - for(i=0; iout); - free(zLine); - zLine = one_input_line(zSql, in); - if( zLine==0 ){ - break; /* We have reached EOF */ - } - if( seenInterrupt ){ - if( in!=0 ) break; - seenInterrupt = 0; - } - lineno++; - if( (zSql==0 || zSql[0]==0) && _all_whitespace(zLine) ) continue; - if( zLine && zLine[0]=='.' && nSql==0 ){ - if( p->echoOn ) printf("%s\n", zLine); - rc = do_meta_command(zLine, p); - if( rc==2 ){ /* exit requested */ - break; - }else if( rc ){ - errCnt++; - } - continue; - } - if( _is_command_terminator(zLine) && _is_complete(zSql, nSql) ){ - memcpy(zLine,";",2); - } - nSqlPrior = nSql; - if( zSql==0 ){ - int i; - for(i=0; zLine[i] && IsSpace(zLine[i]); i++){} - if( zLine[i]!=0 ){ - nSql = strlen30(zLine); - zSql = malloc( nSql+3 ); - if( zSql==0 ){ - fprintf(stderr, "Error: out of memory\n"); - exit(1); - } - memcpy(zSql, zLine, nSql+1); - startline = lineno; - } - }else{ - int len = strlen30(zLine); - zSql = realloc( zSql, nSql + len + 4 ); - if( zSql==0 ){ - fprintf(stderr,"Error: out of memory\n"); - exit(1); - } - zSql[nSql++] = '\n'; - memcpy(&zSql[nSql], zLine, len+1); - nSql += len; - } - if( zSql && _contains_semicolon(&zSql[nSqlPrior], nSql-nSqlPrior) - && sqlite3_complete(zSql) ){ - p->cnt = 0; - open_db(p); - BEGIN_TIMER; - rc = shell_exec(p->db, zSql, shell_callback, p, &zErrMsg); - END_TIMER; - if( rc || zErrMsg ){ - char zPrefix[100]; - if( in!=0 || !stdin_is_interactive ){ - sqlite3_snprintf(sizeof(zPrefix), zPrefix, - "Error: near line %d:", startline); - }else{ - sqlite3_snprintf(sizeof(zPrefix), zPrefix, "Error:"); - } - if( zErrMsg!=0 ){ - fprintf(stderr, "%s %s\n", zPrefix, zErrMsg); - sqlite3_free(zErrMsg); - zErrMsg = 0; - }else{ - fprintf(stderr, "%s %s\n", zPrefix, sqlite3_errmsg(p->db)); - } - errCnt++; - } - free(zSql); - zSql = 0; - nSql = 0; - } - } - if( zSql ){ - if( !_all_whitespace(zSql) ){ - fprintf(stderr, "Error: incomplete SQL: %s\n", zSql); - } - free(zSql); - } - free(zLine); - return errCnt; -} - -/* -** Return a pathname which is the user's home directory. A -** 0 return indicates an error of some kind. Space to hold the -** resulting string is obtained from malloc(). The calling -** function should free the result. -*/ -static char *find_home_dir(void){ - char *home_dir = NULL; - -#if !defined(_WIN32) && !defined(WIN32) && !defined(__OS2__) && !defined(_WIN32_WCE) && !defined(__RTP__) && !defined(_WRS_KERNEL) - struct passwd *pwent; - uid_t uid = getuid(); - if( (pwent=getpwuid(uid)) != NULL) { - home_dir = pwent->pw_dir; - } -#endif - -#if defined(_WIN32_WCE) - /* Windows CE (arm-wince-mingw32ce-gcc) does not provide getenv() - */ - home_dir = strdup("/"); -#else - -#if defined(_WIN32) || defined(WIN32) || defined(__OS2__) - if (!home_dir) { - home_dir = getenv("USERPROFILE"); - } -#endif - - if (!home_dir) { - home_dir = getenv("HOME"); - } - -#if defined(_WIN32) || defined(WIN32) || defined(__OS2__) - if (!home_dir) { - char *zDrive, *zPath; - int n; - zDrive = getenv("HOMEDRIVE"); - zPath = getenv("HOMEPATH"); - if( zDrive && zPath ){ - n = strlen30(zDrive) + strlen30(zPath) + 1; - home_dir = malloc( n ); - if( home_dir==0 ) return 0; - sqlite3_snprintf(n, home_dir, "%s%s", zDrive, zPath); - return home_dir; - } - home_dir = "c:\\"; - } -#endif - -#endif /* !_WIN32_WCE */ - - if( home_dir ){ - int n = strlen30(home_dir) + 1; - char *z = malloc( n ); - if( z ) memcpy(z, home_dir, n); - home_dir = z; - } - - return home_dir; -} - -/* -** Read input from the file given by sqliterc_override. Or if that -** parameter is NULL, take input from ~/.sqliterc -** -** Returns the number of errors. -*/ -static int process_sqliterc( - struct callback_data *p, /* Configuration data */ - const char *sqliterc_override /* Name of config file. NULL to use default */ -){ - char *home_dir = NULL; - const char *sqliterc = sqliterc_override; - char *zBuf = 0; - FILE *in = NULL; - int nBuf; - int rc = 0; - - if (sqliterc == NULL) { - home_dir = find_home_dir(); - if( home_dir==0 ){ -#if !defined(__RTP__) && !defined(_WRS_KERNEL) - fprintf(stderr,"%s: Error: cannot locate your home directory\n", Argv0); -#endif - return 1; - } - nBuf = strlen30(home_dir) + 16; - zBuf = malloc( nBuf ); - if( zBuf==0 ){ - fprintf(stderr,"%s: Error: out of memory\n",Argv0); - return 1; - } - sqlite3_snprintf(nBuf, zBuf,"%s/.sqliterc",home_dir); - free(home_dir); - sqliterc = (const char*)zBuf; - } - in = fopen(sqliterc,"rb"); - if( in ){ - if( stdin_is_interactive ){ - fprintf(stderr,"-- Loading resources from %s\n",sqliterc); - } - rc = process_input(p,in); - fclose(in); - } - free(zBuf); - return rc; -} - -/* -** Show available command line options -*/ -static const char zOptions[] = - " -help show this message\n" - " -init filename read/process named file\n" - " -echo print commands before execution\n" - " -[no]header turn headers on or off\n" - " -bail stop after hitting an error\n" - " -interactive force interactive I/O\n" - " -batch force batch I/O\n" - " -column set output mode to 'column'\n" - " -csv set output mode to 'csv'\n" - " -html set output mode to HTML\n" - " -line set output mode to 'line'\n" - " -list set output mode to 'list'\n" - " -separator 'x' set output field separator (|)\n" - " -stats print memory stats before each finalize\n" - " -nullvalue 'text' set text string for NULL values\n" - " -version show SQLite version\n" - " -vfs NAME use NAME as the default VFS\n" -#ifdef SQLITE_ENABLE_VFSTRACE - " -vfstrace enable tracing of all VFS calls\n" -#endif -#ifdef SQLITE_ENABLE_MULTIPLEX - " -multiplex enable the multiplexor VFS\n" -#endif -; -static void usage(int showDetail){ - fprintf(stderr, - "Usage: %s [OPTIONS] FILENAME [SQL]\n" - "FILENAME is the name of an SQLite database. A new database is created\n" - "if the file does not previously exist.\n", Argv0); - if( showDetail ){ - fprintf(stderr, "OPTIONS include:\n%s", zOptions); - }else{ - fprintf(stderr, "Use the -help option for additional information\n"); - } - exit(1); -} - -/* -** Initialize the state information in data -*/ -static void main_init(struct callback_data *data) { - memset(data, 0, sizeof(*data)); - data->mode = MODE_List; - memcpy(data->separator,"|", 2); - data->showHeader = 0; - sqlite3_config(SQLITE_CONFIG_URI, 1); - sqlite3_config(SQLITE_CONFIG_LOG, shellLog, data); - sqlite3_snprintf(sizeof(mainPrompt), mainPrompt,"sqlite> "); - sqlite3_snprintf(sizeof(continuePrompt), continuePrompt," ...> "); - sqlite3_config(SQLITE_CONFIG_SINGLETHREAD); -} - -int main(int argc, char **argv){ - char *zErrMsg = 0; - struct callback_data data; - const char *zInitFile = 0; - char *zFirstCmd = 0; - int i; - int rc = 0; - - if( strcmp(sqlite3_sourceid(),SQLITE_SOURCE_ID)!=0 ){ - fprintf(stderr, "SQLite header and source version mismatch\n%s\n%s\n", - sqlite3_sourceid(), SQLITE_SOURCE_ID); - exit(1); - } - Argv0 = argv[0]; - main_init(&data); - stdin_is_interactive = isatty(0); - - /* Make sure we have a valid signal handler early, before anything - ** else is done. - */ -#ifdef SIGINT - signal(SIGINT, interrupt_handler); -#endif - - /* Do an initial pass through the command-line argument to locate - ** the name of the database file, the name of the initialization file, - ** the size of the alternative malloc heap, - ** and the first command to execute. - */ - for(i=1; i0x7fff0000 ) szHeap = 0x7fff0000; - sqlite3_config(SQLITE_CONFIG_HEAP, malloc((int)szHeap), (int)szHeap, 64); -#endif -#ifdef SQLITE_ENABLE_VFSTRACE - }else if( strcmp(argv[i],"-vfstrace")==0 ){ - extern int vfstrace_register( - const char *zTraceName, - const char *zOldVfsName, - int (*xOut)(const char*,void*), - void *pOutArg, - int makeDefault - ); - vfstrace_register("trace",0,(int(*)(const char*,void*))fputs,stderr,1); -#endif -#ifdef SQLITE_ENABLE_MULTIPLEX - }else if( strcmp(argv[i],"-multiplex")==0 ){ - extern int sqlite3_multiple_initialize(const char*,int); - sqlite3_multiplex_initialize(0, 1); -#endif - }else if( strcmp(argv[i],"-vfs")==0 ){ - sqlite3_vfs *pVfs = sqlite3_vfs_find(argv[++i]); - if( pVfs ){ - sqlite3_vfs_register(pVfs, 1); - }else{ - fprintf(stderr, "no such VFS: \"%s\"\n", argv[i]); - exit(1); - } - } - } - if( i0 ){ - return rc; - } - - /* Make a second pass through the command-line argument and set - ** options. This second pass is delayed until after the initialization - ** file is processed so that the command-line arguments will override - ** settings in the initialization file. - */ - for(i=1; i=argc){ - fprintf(stderr,"%s: Error: missing argument for option: %s\n", Argv0, z); - fprintf(stderr,"Use -help for a list of options.\n"); - return 1; - } - sqlite3_snprintf(sizeof(data.separator), data.separator, - "%.*s",(int)sizeof(data.separator)-1,argv[i]); - }else if( strcmp(z,"-nullvalue")==0 ){ - i++; - if(i>=argc){ - fprintf(stderr,"%s: Error: missing argument for option: %s\n", Argv0, z); - fprintf(stderr,"Use -help for a list of options.\n"); - return 1; - } - sqlite3_snprintf(sizeof(data.nullvalue), data.nullvalue, - "%.*s",(int)sizeof(data.nullvalue)-1,argv[i]); - }else if( strcmp(z,"-header")==0 ){ - data.showHeader = 1; - }else if( strcmp(z,"-noheader")==0 ){ - data.showHeader = 0; - }else if( strcmp(z,"-echo")==0 ){ - data.echoOn = 1; - }else if( strcmp(z,"-stats")==0 ){ - data.statsOn = 1; - }else if( strcmp(z,"-bail")==0 ){ - bail_on_error = 1; - }else if( strcmp(z,"-version")==0 ){ - printf("%s %s\n", sqlite3_libversion(), sqlite3_sourceid()); - return 0; - }else if( strcmp(z,"-interactive")==0 ){ - stdin_is_interactive = 1; - }else if( strcmp(z,"-batch")==0 ){ - stdin_is_interactive = 0; - }else if( strcmp(z,"-heap")==0 ){ - i++; - }else if( strcmp(z,"-vfs")==0 ){ - i++; -#ifdef SQLITE_ENABLE_VFSTRACE - }else if( strcmp(z,"-vfstrace")==0 ){ - i++; -#endif -#ifdef SQLITE_ENABLE_MULTIPLEX - }else if( strcmp(z,"-multiplex")==0 ){ - i++; -#endif - }else if( strcmp(z,"-help")==0 || strcmp(z, "--help")==0 ){ - usage(1); - }else{ - fprintf(stderr,"%s: Error: unknown option: %s\n", Argv0, z); - fprintf(stderr,"Use -help for a list of options.\n"); - return 1; - } - } - - if( zFirstCmd ){ - /* Run just the command that follows the database name - */ - if( zFirstCmd[0]=='.' ){ - rc = do_meta_command(zFirstCmd, &data); - }else{ - open_db(&data); - rc = shell_exec(data.db, zFirstCmd, shell_callback, &data, &zErrMsg); - if( zErrMsg!=0 ){ - fprintf(stderr,"Error: %s\n", zErrMsg); - return rc!=0 ? rc : 1; - }else if( rc!=0 ){ - fprintf(stderr,"Error: unable to process SQL \"%s\"\n", zFirstCmd); - return rc; - } - } - }else{ - /* Run commands received from standard input - */ - if( stdin_is_interactive ){ - char *zHome; - char *zHistory = 0; - int nHistory; - printf( - "SQLite version %s %.19s\n" - "Enter \".help\" for instructions\n" - "Enter SQL statements terminated with a \";\"\n", - sqlite3_libversion(), sqlite3_sourceid() - ); - zHome = find_home_dir(); - if( zHome ){ - nHistory = strlen30(zHome) + 20; - if( (zHistory = malloc(nHistory))!=0 ){ - sqlite3_snprintf(nHistory, zHistory,"%s/.sqlite_history", zHome); - } - } -#if defined(HAVE_READLINE) && HAVE_READLINE==1 - if( zHistory ) read_history(zHistory); -#endif - rc = process_input(&data, 0); - if( zHistory ){ - stifle_history(100); - write_history(zHistory); - free(zHistory); - } - free(zHome); - }else{ - rc = process_input(&data, stdin); - } - } - set_table_name(&data, 0); - if( data.db ){ - sqlite3_close(data.db); - } - return rc; -} diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/sqlite.h.in b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/sqlite.h.in deleted file mode 100644 index a5a8df9ccf..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/sqlite.h.in +++ /dev/null @@ -1,6732 +0,0 @@ -/* -** 2001 September 15 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This header file defines the interface that the SQLite library -** presents to client programs. If a C-function, structure, datatype, -** or constant definition does not appear in this file, then it is -** not a published API of SQLite, is subject to change without -** notice, and should not be referenced by programs that use SQLite. -** -** Some of the definitions that are in this file are marked as -** "experimental". Experimental interfaces are normally new -** features recently added to SQLite. We do not anticipate changes -** to experimental interfaces but reserve the right to make minor changes -** if experience from use "in the wild" suggest such changes are prudent. -** -** The official C-language API documentation for SQLite is derived -** from comments in this file. This file is the authoritative source -** on how SQLite interfaces are suppose to operate. -** -** The name of this file under configuration management is "sqlite.h.in". -** The makefile makes some minor changes to this file (such as inserting -** the version number) and changes its name to "sqlite3.h" as -** part of the build process. -*/ -#ifndef _SQLITE3_H_ -#define _SQLITE3_H_ -#include /* Needed for the definition of va_list */ - -/* -** Make sure we can call this stuff from C++. -*/ -#ifdef __cplusplus -extern "C" { -#endif - - -/* -** Add the ability to override 'extern' -*/ -#ifndef SQLITE_EXTERN -# define SQLITE_EXTERN extern -#endif - -/* -** These no-op macros are used in front of interfaces to mark those -** interfaces as either deprecated or experimental. New applications -** should not use deprecated interfaces - they are support for backwards -** compatibility only. Application writers should be aware that -** experimental interfaces are subject to change in point releases. -** -** These macros used to resolve to various kinds of compiler magic that -** would generate warning messages when they were used. But that -** compiler magic ended up generating such a flurry of bug reports -** that we have taken it all out and gone back to using simple -** noop macros. -*/ -#define SQLITE_DEPRECATED -#define SQLITE_EXPERIMENTAL - -/* -** Ensure these symbols were not defined by some previous header file. -*/ -#ifdef SQLITE_VERSION -# undef SQLITE_VERSION -#endif -#ifdef SQLITE_VERSION_NUMBER -# undef SQLITE_VERSION_NUMBER -#endif - -/* -** CAPI3REF: Compile-Time Library Version Numbers -** -** ^(The [SQLITE_VERSION] C preprocessor macro in the sqlite3.h header -** evaluates to a string literal that is the SQLite version in the -** format "X.Y.Z" where X is the major version number (always 3 for -** SQLite3) and Y is the minor version number and Z is the release number.)^ -** ^(The [SQLITE_VERSION_NUMBER] C preprocessor macro resolves to an integer -** with the value (X*1000000 + Y*1000 + Z) where X, Y, and Z are the same -** numbers used in [SQLITE_VERSION].)^ -** The SQLITE_VERSION_NUMBER for any given release of SQLite will also -** be larger than the release from which it is derived. Either Y will -** be held constant and Z will be incremented or else Y will be incremented -** and Z will be reset to zero. -** -** Since version 3.6.18, SQLite source code has been stored in the -** Fossil configuration management -** system. ^The SQLITE_SOURCE_ID macro evaluates to -** a string which identifies a particular check-in of SQLite -** within its configuration management system. ^The SQLITE_SOURCE_ID -** string contains the date and time of the check-in (UTC) and an SHA1 -** hash of the entire source tree. -** -** See also: [sqlite3_libversion()], -** [sqlite3_libversion_number()], [sqlite3_sourceid()], -** [sqlite_version()] and [sqlite_source_id()]. -*/ -#define SQLITE_VERSION "--VERS--" -#define SQLITE_VERSION_NUMBER --VERSION-NUMBER-- -#define SQLITE_SOURCE_ID "--SOURCE-ID--" - -/* -** CAPI3REF: Run-Time Library Version Numbers -** KEYWORDS: sqlite3_version, sqlite3_sourceid -** -** These interfaces provide the same information as the [SQLITE_VERSION], -** [SQLITE_VERSION_NUMBER], and [SQLITE_SOURCE_ID] C preprocessor macros -** but are associated with the library instead of the header file. ^(Cautious -** programmers might include assert() statements in their application to -** verify that values returned by these interfaces match the macros in -** the header, and thus insure that the application is -** compiled with matching library and header files. -** -** 
    -** assert( sqlite3_libversion_number()==SQLITE_VERSION_NUMBER );
-** assert( strcmp(sqlite3_sourceid(),SQLITE_SOURCE_ID)==0 );
-** assert( strcmp(sqlite3_libversion(),SQLITE_VERSION)==0 );
-**
    )^ -** -** ^The sqlite3_version[] string constant contains the text of [SQLITE_VERSION] -** macro. ^The sqlite3_libversion() function returns a pointer to the -** to the sqlite3_version[] string constant. The sqlite3_libversion() -** function is provided for use in DLLs since DLL users usually do not have -** direct access to string constants within the DLL. ^The -** sqlite3_libversion_number() function returns an integer equal to -** [SQLITE_VERSION_NUMBER]. ^The sqlite3_sourceid() function returns -** a pointer to a string constant whose value is the same as the -** [SQLITE_SOURCE_ID] C preprocessor macro. -** -** See also: [sqlite_version()] and [sqlite_source_id()]. -*/ -SQLITE_EXTERN const char sqlite3_version[]; -const char *sqlite3_libversion(void); -const char *sqlite3_sourceid(void); -int sqlite3_libversion_number(void); - -/* -** CAPI3REF: Run-Time Library Compilation Options Diagnostics -** -** ^The sqlite3_compileoption_used() function returns 0 or 1 -** indicating whether the specified option was defined at -** compile time. ^The SQLITE_ prefix may be omitted from the -** option name passed to sqlite3_compileoption_used(). -** -** ^The sqlite3_compileoption_get() function allows iterating -** over the list of options that were defined at compile time by -** returning the N-th compile time option string. ^If N is out of range, -** sqlite3_compileoption_get() returns a NULL pointer. ^The SQLITE_ -** prefix is omitted from any strings returned by -** sqlite3_compileoption_get(). -** -** ^Support for the diagnostic functions sqlite3_compileoption_used() -** and sqlite3_compileoption_get() may be omitted by specifying the -** [SQLITE_OMIT_COMPILEOPTION_DIAGS] option at compile time. -** -** See also: SQL functions [sqlite_compileoption_used()] and -** [sqlite_compileoption_get()] and the [compile_options pragma]. -*/ -#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS -int sqlite3_compileoption_used(const char *zOptName); -const char *sqlite3_compileoption_get(int N); -#endif - -/* -** CAPI3REF: Test To See If The Library Is Threadsafe -** -** ^The sqlite3_threadsafe() function returns zero if and only if -** SQLite was compiled mutexing code omitted due to the -** [SQLITE_THREADSAFE] compile-time option being set to 0. -** -** SQLite can be compiled with or without mutexes. When -** the [SQLITE_THREADSAFE] C preprocessor macro is 1 or 2, mutexes -** are enabled and SQLite is threadsafe. When the -** [SQLITE_THREADSAFE] macro is 0, -** the mutexes are omitted. Without the mutexes, it is not safe -** to use SQLite concurrently from more than one thread. -** -** Enabling mutexes incurs a measurable performance penalty. -** So if speed is of utmost importance, it makes sense to disable -** the mutexes. But for maximum safety, mutexes should be enabled. -** ^The default behavior is for mutexes to be enabled. -** -** This interface can be used by an application to make sure that the -** version of SQLite that it is linking against was compiled with -** the desired setting of the [SQLITE_THREADSAFE] macro. -** -** This interface only reports on the compile-time mutex setting -** of the [SQLITE_THREADSAFE] flag. If SQLite is compiled with -** SQLITE_THREADSAFE=1 or =2 then mutexes are enabled by default but -** can be fully or partially disabled using a call to [sqlite3_config()] -** with the verbs [SQLITE_CONFIG_SINGLETHREAD], [SQLITE_CONFIG_MULTITHREAD], -** or [SQLITE_CONFIG_MUTEX]. ^(The return value of the -** sqlite3_threadsafe() function shows only the compile-time setting of -** thread safety, not any run-time changes to that setting made by -** sqlite3_config(). In other words, the return value from sqlite3_threadsafe() -** is unchanged by calls to sqlite3_config().)^ -** -** See the [threading mode] documentation for additional information. -*/ -int sqlite3_threadsafe(void); - -/* -** CAPI3REF: Database Connection Handle -** KEYWORDS: {database connection} {database connections} -** -** Each open SQLite database is represented by a pointer to an instance of -** the opaque structure named "sqlite3". It is useful to think of an sqlite3 -** pointer as an object. The [sqlite3_open()], [sqlite3_open16()], and -** [sqlite3_open_v2()] interfaces are its constructors, and [sqlite3_close()] -** is its destructor. There are many other interfaces (such as -** [sqlite3_prepare_v2()], [sqlite3_create_function()], and -** [sqlite3_busy_timeout()] to name but three) that are methods on an -** sqlite3 object. -*/ -typedef struct sqlite3 sqlite3; - -/* -** CAPI3REF: 64-Bit Integer Types -** KEYWORDS: sqlite_int64 sqlite_uint64 -** -** Because there is no cross-platform way to specify 64-bit integer types -** SQLite includes typedefs for 64-bit signed and unsigned integers. -** -** The sqlite3_int64 and sqlite3_uint64 are the preferred type definitions. -** The sqlite_int64 and sqlite_uint64 types are supported for backwards -** compatibility only. -** -** ^The sqlite3_int64 and sqlite_int64 types can store integer values -** between -9223372036854775808 and +9223372036854775807 inclusive. ^The -** sqlite3_uint64 and sqlite_uint64 types can store integer values -** between 0 and +18446744073709551615 inclusive. -*/ -#ifdef SQLITE_INT64_TYPE - typedef SQLITE_INT64_TYPE sqlite_int64; - typedef unsigned SQLITE_INT64_TYPE sqlite_uint64; -#elif defined(_MSC_VER) || defined(__BORLANDC__) - typedef __int64 sqlite_int64; - typedef unsigned __int64 sqlite_uint64; -#else - typedef long long int sqlite_int64; - typedef unsigned long long int sqlite_uint64; -#endif -typedef sqlite_int64 sqlite3_int64; -typedef sqlite_uint64 sqlite3_uint64; - -/* -** If compiling for a processor that lacks floating point support, -** substitute integer for floating-point. -*/ -#ifdef SQLITE_OMIT_FLOATING_POINT -# define double sqlite3_int64 -#endif - -/* -** CAPI3REF: Closing A Database Connection -** -** ^The sqlite3_close() routine is the destructor for the [sqlite3] object. -** ^Calls to sqlite3_close() return SQLITE_OK if the [sqlite3] object is -** successfully destroyed and all associated resources are deallocated. -** -** Applications must [sqlite3_finalize | finalize] all [prepared statements] -** and [sqlite3_blob_close | close] all [BLOB handles] associated with -** the [sqlite3] object prior to attempting to close the object. ^If -** sqlite3_close() is called on a [database connection] that still has -** outstanding [prepared statements] or [BLOB handles], then it returns -** SQLITE_BUSY. -** -** ^If [sqlite3_close()] is invoked while a transaction is open, -** the transaction is automatically rolled back. -** -** The C parameter to [sqlite3_close(C)] must be either a NULL -** pointer or an [sqlite3] object pointer obtained -** from [sqlite3_open()], [sqlite3_open16()], or -** [sqlite3_open_v2()], and not previously closed. -** ^Calling sqlite3_close() with a NULL pointer argument is a -** harmless no-op. -*/ -int sqlite3_close(sqlite3 *); - -/* -** The type for a callback function. -** This is legacy and deprecated. It is included for historical -** compatibility and is not documented. -*/ -typedef int (*sqlite3_callback)(void*,int,char**, char**); - -/* -** CAPI3REF: One-Step Query Execution Interface -** -** The sqlite3_exec() interface is a convenience wrapper around -** [sqlite3_prepare_v2()], [sqlite3_step()], and [sqlite3_finalize()], -** that allows an application to run multiple statements of SQL -** without having to use a lot of C code. -** -** ^The sqlite3_exec() interface runs zero or more UTF-8 encoded, -** semicolon-separate SQL statements passed into its 2nd argument, -** in the context of the [database connection] passed in as its 1st -** argument. ^If the callback function of the 3rd argument to -** sqlite3_exec() is not NULL, then it is invoked for each result row -** coming out of the evaluated SQL statements. ^The 4th argument to -** sqlite3_exec() is relayed through to the 1st argument of each -** callback invocation. ^If the callback pointer to sqlite3_exec() -** is NULL, then no callback is ever invoked and result rows are -** ignored. -** -** ^If an error occurs while evaluating the SQL statements passed into -** sqlite3_exec(), then execution of the current statement stops and -** subsequent statements are skipped. ^If the 5th parameter to sqlite3_exec() -** is not NULL then any error message is written into memory obtained -** from [sqlite3_malloc()] and passed back through the 5th parameter. -** To avoid memory leaks, the application should invoke [sqlite3_free()] -** on error message strings returned through the 5th parameter of -** of sqlite3_exec() after the error message string is no longer needed. -** ^If the 5th parameter to sqlite3_exec() is not NULL and no errors -** occur, then sqlite3_exec() sets the pointer in its 5th parameter to -** NULL before returning. -** -** ^If an sqlite3_exec() callback returns non-zero, the sqlite3_exec() -** routine returns SQLITE_ABORT without invoking the callback again and -** without running any subsequent SQL statements. -** -** ^The 2nd argument to the sqlite3_exec() callback function is the -** number of columns in the result. ^The 3rd argument to the sqlite3_exec() -** callback is an array of pointers to strings obtained as if from -** [sqlite3_column_text()], one for each column. ^If an element of a -** result row is NULL then the corresponding string pointer for the -** sqlite3_exec() callback is a NULL pointer. ^The 4th argument to the -** sqlite3_exec() callback is an array of pointers to strings where each -** entry represents the name of corresponding result column as obtained -** from [sqlite3_column_name()]. -** -** ^If the 2nd parameter to sqlite3_exec() is a NULL pointer, a pointer -** to an empty string, or a pointer that contains only whitespace and/or -** SQL comments, then no SQL statements are evaluated and the database -** is not changed. -** -** Restrictions: -** -**
      -**
    • The application must insure that the 1st parameter to sqlite3_exec() -** is a valid and open [database connection]. -**
    • The application must not close [database connection] specified by -** the 1st parameter to sqlite3_exec() while sqlite3_exec() is running. -**
    • The application must not modify the SQL statement text passed into -** the 2nd parameter of sqlite3_exec() while sqlite3_exec() is running. -**
    -*/ -int sqlite3_exec( - sqlite3*, /* An open database */ - const char *sql, /* SQL to be evaluated */ - int (*callback)(void*,int,char**,char**), /* Callback function */ - void *, /* 1st argument to callback */ - char **errmsg /* Error msg written here */ -); - -/* -** CAPI3REF: Result Codes -** KEYWORDS: SQLITE_OK {error code} {error codes} -** KEYWORDS: {result code} {result codes} -** -** Many SQLite functions return an integer result code from the set shown -** here in order to indicates success or failure. -** -** New error codes may be added in future versions of SQLite. -** -** See also: [SQLITE_IOERR_READ | extended result codes], -** [sqlite3_vtab_on_conflict()] [SQLITE_ROLLBACK | result codes]. -*/ -#define SQLITE_OK 0 /* Successful result */ -/* beginning-of-error-codes */ -#define SQLITE_ERROR 1 /* SQL error or missing database */ -#define SQLITE_INTERNAL 2 /* Internal logic error in SQLite */ -#define SQLITE_PERM 3 /* Access permission denied */ -#define SQLITE_ABORT 4 /* Callback routine requested an abort */ -#define SQLITE_BUSY 5 /* The database file is locked */ -#define SQLITE_LOCKED 6 /* A table in the database is locked */ -#define SQLITE_NOMEM 7 /* A malloc() failed */ -#define SQLITE_READONLY 8 /* Attempt to write a readonly database */ -#define SQLITE_INTERRUPT 9 /* Operation terminated by sqlite3_interrupt()*/ -#define SQLITE_IOERR 10 /* Some kind of disk I/O error occurred */ -#define SQLITE_CORRUPT 11 /* The database disk image is malformed */ -#define SQLITE_NOTFOUND 12 /* Unknown opcode in sqlite3_file_control() */ -#define SQLITE_FULL 13 /* Insertion failed because database is full */ -#define SQLITE_CANTOPEN 14 /* Unable to open the database file */ -#define SQLITE_PROTOCOL 15 /* Database lock protocol error */ -#define SQLITE_EMPTY 16 /* Database is empty */ -#define SQLITE_SCHEMA 17 /* The database schema changed */ -#define SQLITE_TOOBIG 18 /* String or BLOB exceeds size limit */ -#define SQLITE_CONSTRAINT 19 /* Abort due to constraint violation */ -#define SQLITE_MISMATCH 20 /* Data type mismatch */ -#define SQLITE_MISUSE 21 /* Library used incorrectly */ -#define SQLITE_NOLFS 22 /* Uses OS features not supported on host */ -#define SQLITE_AUTH 23 /* Authorization denied */ -#define SQLITE_FORMAT 24 /* Auxiliary database format error */ -#define SQLITE_RANGE 25 /* 2nd parameter to sqlite3_bind out of range */ -#define SQLITE_NOTADB 26 /* File opened that is not a database file */ -#define SQLITE_ROW 100 /* sqlite3_step() has another row ready */ -#define SQLITE_DONE 101 /* sqlite3_step() has finished executing */ -/* end-of-error-codes */ - -/* -** CAPI3REF: Extended Result Codes -** KEYWORDS: {extended error code} {extended error codes} -** KEYWORDS: {extended result code} {extended result codes} -** -** In its default configuration, SQLite API routines return one of 26 integer -** [SQLITE_OK | result codes]. However, experience has shown that many of -** these result codes are too coarse-grained. They do not provide as -** much information about problems as programmers might like. In an effort to -** address this, newer versions of SQLite (version 3.3.8 and later) include -** support for additional result codes that provide more detailed information -** about errors. The extended result codes are enabled or disabled -** on a per database connection basis using the -** [sqlite3_extended_result_codes()] API. -** -** Some of the available extended result codes are listed here. -** One may expect the number of extended result codes will be expand -** over time. Software that uses extended result codes should expect -** to see new result codes in future releases of SQLite. -** -** The SQLITE_OK result code will never be extended. It will always -** be exactly zero. -*/ -#define SQLITE_IOERR_READ (SQLITE_IOERR | (1<<8)) -#define SQLITE_IOERR_SHORT_READ (SQLITE_IOERR | (2<<8)) -#define SQLITE_IOERR_WRITE (SQLITE_IOERR | (3<<8)) -#define SQLITE_IOERR_FSYNC (SQLITE_IOERR | (4<<8)) -#define SQLITE_IOERR_DIR_FSYNC (SQLITE_IOERR | (5<<8)) -#define SQLITE_IOERR_TRUNCATE (SQLITE_IOERR | (6<<8)) -#define SQLITE_IOERR_FSTAT (SQLITE_IOERR | (7<<8)) -#define SQLITE_IOERR_UNLOCK (SQLITE_IOERR | (8<<8)) -#define SQLITE_IOERR_RDLOCK (SQLITE_IOERR | (9<<8)) -#define SQLITE_IOERR_DELETE (SQLITE_IOERR | (10<<8)) -#define SQLITE_IOERR_BLOCKED (SQLITE_IOERR | (11<<8)) -#define SQLITE_IOERR_NOMEM (SQLITE_IOERR | (12<<8)) -#define SQLITE_IOERR_ACCESS (SQLITE_IOERR | (13<<8)) -#define SQLITE_IOERR_CHECKRESERVEDLOCK (SQLITE_IOERR | (14<<8)) -#define SQLITE_IOERR_LOCK (SQLITE_IOERR | (15<<8)) -#define SQLITE_IOERR_CLOSE (SQLITE_IOERR | (16<<8)) -#define SQLITE_IOERR_DIR_CLOSE (SQLITE_IOERR | (17<<8)) -#define SQLITE_IOERR_SHMOPEN (SQLITE_IOERR | (18<<8)) -#define SQLITE_IOERR_SHMSIZE (SQLITE_IOERR | (19<<8)) -#define SQLITE_IOERR_SHMLOCK (SQLITE_IOERR | (20<<8)) -#define SQLITE_IOERR_SHMMAP (SQLITE_IOERR | (21<<8)) -#define SQLITE_IOERR_SEEK (SQLITE_IOERR | (22<<8)) -#define SQLITE_LOCKED_SHAREDCACHE (SQLITE_LOCKED | (1<<8)) -#define SQLITE_BUSY_RECOVERY (SQLITE_BUSY | (1<<8)) -#define SQLITE_CANTOPEN_NOTEMPDIR (SQLITE_CANTOPEN | (1<<8)) -#define SQLITE_CORRUPT_VTAB (SQLITE_CORRUPT | (1<<8)) -#define SQLITE_READONLY_RECOVERY (SQLITE_READONLY | (1<<8)) -#define SQLITE_READONLY_CANTLOCK (SQLITE_READONLY | (2<<8)) - -/* -** CAPI3REF: Flags For File Open Operations -** -** These bit values are intended for use in the -** 3rd parameter to the [sqlite3_open_v2()] interface and -** in the 4th parameter to the [sqlite3_vfs.xOpen] method. -*/ -#define SQLITE_OPEN_READONLY 0x00000001 /* Ok for sqlite3_open_v2() */ -#define SQLITE_OPEN_READWRITE 0x00000002 /* Ok for sqlite3_open_v2() */ -#define SQLITE_OPEN_CREATE 0x00000004 /* Ok for sqlite3_open_v2() */ -#define SQLITE_OPEN_DELETEONCLOSE 0x00000008 /* VFS only */ -#define SQLITE_OPEN_EXCLUSIVE 0x00000010 /* VFS only */ -#define SQLITE_OPEN_AUTOPROXY 0x00000020 /* VFS only */ -#define SQLITE_OPEN_URI 0x00000040 /* Ok for sqlite3_open_v2() */ -#define SQLITE_OPEN_MAIN_DB 0x00000100 /* VFS only */ -#define SQLITE_OPEN_TEMP_DB 0x00000200 /* VFS only */ -#define SQLITE_OPEN_TRANSIENT_DB 0x00000400 /* VFS only */ -#define SQLITE_OPEN_MAIN_JOURNAL 0x00000800 /* VFS only */ -#define SQLITE_OPEN_TEMP_JOURNAL 0x00001000 /* VFS only */ -#define SQLITE_OPEN_SUBJOURNAL 0x00002000 /* VFS only */ -#define SQLITE_OPEN_MASTER_JOURNAL 0x00004000 /* VFS only */ -#define SQLITE_OPEN_NOMUTEX 0x00008000 /* Ok for sqlite3_open_v2() */ -#define SQLITE_OPEN_FULLMUTEX 0x00010000 /* Ok for sqlite3_open_v2() */ -#define SQLITE_OPEN_SHAREDCACHE 0x00020000 /* Ok for sqlite3_open_v2() */ -#define SQLITE_OPEN_PRIVATECACHE 0x00040000 /* Ok for sqlite3_open_v2() */ -#define SQLITE_OPEN_WAL 0x00080000 /* VFS only */ - -/* Reserved: 0x00F00000 */ - -/* -** CAPI3REF: Device Characteristics -** -** The xDeviceCharacteristics method of the [sqlite3_io_methods] -** object returns an integer which is a vector of the these -** bit values expressing I/O characteristics of the mass storage -** device that holds the file that the [sqlite3_io_methods] -** refers to. -** -** The SQLITE_IOCAP_ATOMIC property means that all writes of -** any size are atomic. The SQLITE_IOCAP_ATOMICnnn values -** mean that writes of blocks that are nnn bytes in size and -** are aligned to an address which is an integer multiple of -** nnn are atomic. The SQLITE_IOCAP_SAFE_APPEND value means -** that when data is appended to a file, the data is appended -** first then the size of the file is extended, never the other -** way around. The SQLITE_IOCAP_SEQUENTIAL property means that -** information is written to disk in the same order as calls -** to xWrite(). -*/ -#define SQLITE_IOCAP_ATOMIC 0x00000001 -#define SQLITE_IOCAP_ATOMIC512 0x00000002 -#define SQLITE_IOCAP_ATOMIC1K 0x00000004 -#define SQLITE_IOCAP_ATOMIC2K 0x00000008 -#define SQLITE_IOCAP_ATOMIC4K 0x00000010 -#define SQLITE_IOCAP_ATOMIC8K 0x00000020 -#define SQLITE_IOCAP_ATOMIC16K 0x00000040 -#define SQLITE_IOCAP_ATOMIC32K 0x00000080 -#define SQLITE_IOCAP_ATOMIC64K 0x00000100 -#define SQLITE_IOCAP_SAFE_APPEND 0x00000200 -#define SQLITE_IOCAP_SEQUENTIAL 0x00000400 -#define SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN 0x00000800 - -/* -** CAPI3REF: File Locking Levels -** -** SQLite uses one of these integer values as the second -** argument to calls it makes to the xLock() and xUnlock() methods -** of an [sqlite3_io_methods] object. -*/ -#define SQLITE_LOCK_NONE 0 -#define SQLITE_LOCK_SHARED 1 -#define SQLITE_LOCK_RESERVED 2 -#define SQLITE_LOCK_PENDING 3 -#define SQLITE_LOCK_EXCLUSIVE 4 - -/* -** CAPI3REF: Synchronization Type Flags -** -** When SQLite invokes the xSync() method of an -** [sqlite3_io_methods] object it uses a combination of -** these integer values as the second argument. -** -** When the SQLITE_SYNC_DATAONLY flag is used, it means that the -** sync operation only needs to flush data to mass storage. Inode -** information need not be flushed. If the lower four bits of the flag -** equal SQLITE_SYNC_NORMAL, that means to use normal fsync() semantics. -** If the lower four bits equal SQLITE_SYNC_FULL, that means -** to use Mac OS X style fullsync instead of fsync(). -** -** Do not confuse the SQLITE_SYNC_NORMAL and SQLITE_SYNC_FULL flags -** with the [PRAGMA synchronous]=NORMAL and [PRAGMA synchronous]=FULL -** settings. The [synchronous pragma] determines when calls to the -** xSync VFS method occur and applies uniformly across all platforms. -** The SQLITE_SYNC_NORMAL and SQLITE_SYNC_FULL flags determine how -** energetic or rigorous or forceful the sync operations are and -** only make a difference on Mac OSX for the default SQLite code. -** (Third-party VFS implementations might also make the distinction -** between SQLITE_SYNC_NORMAL and SQLITE_SYNC_FULL, but among the -** operating systems natively supported by SQLite, only Mac OSX -** cares about the difference.) -*/ -#define SQLITE_SYNC_NORMAL 0x00002 -#define SQLITE_SYNC_FULL 0x00003 -#define SQLITE_SYNC_DATAONLY 0x00010 - -/* -** CAPI3REF: OS Interface Open File Handle -** -** An [sqlite3_file] object represents an open file in the -** [sqlite3_vfs | OS interface layer]. Individual OS interface -** implementations will -** want to subclass this object by appending additional fields -** for their own use. The pMethods entry is a pointer to an -** [sqlite3_io_methods] object that defines methods for performing -** I/O operations on the open file. -*/ -typedef struct sqlite3_file sqlite3_file; -struct sqlite3_file { - const struct sqlite3_io_methods *pMethods; /* Methods for an open file */ -}; - -/* -** CAPI3REF: OS Interface File Virtual Methods Object -** -** Every file opened by the [sqlite3_vfs.xOpen] method populates an -** [sqlite3_file] object (or, more commonly, a subclass of the -** [sqlite3_file] object) with a pointer to an instance of this object. -** This object defines the methods used to perform various operations -** against the open file represented by the [sqlite3_file] object. -** -** If the [sqlite3_vfs.xOpen] method sets the sqlite3_file.pMethods element -** to a non-NULL pointer, then the sqlite3_io_methods.xClose method -** may be invoked even if the [sqlite3_vfs.xOpen] reported that it failed. The -** only way to prevent a call to xClose following a failed [sqlite3_vfs.xOpen] -** is for the [sqlite3_vfs.xOpen] to set the sqlite3_file.pMethods element -** to NULL. -** -** The flags argument to xSync may be one of [SQLITE_SYNC_NORMAL] or -** [SQLITE_SYNC_FULL]. The first choice is the normal fsync(). -** The second choice is a Mac OS X style fullsync. The [SQLITE_SYNC_DATAONLY] -** flag may be ORed in to indicate that only the data of the file -** and not its inode needs to be synced. -** -** The integer values to xLock() and xUnlock() are one of -**
      -**
    • [SQLITE_LOCK_NONE], -**
    • [SQLITE_LOCK_SHARED], -**
    • [SQLITE_LOCK_RESERVED], -**
    • [SQLITE_LOCK_PENDING], or -**
    • [SQLITE_LOCK_EXCLUSIVE]. -**
    -** xLock() increases the lock. xUnlock() decreases the lock. -** The xCheckReservedLock() method checks whether any database connection, -** either in this process or in some other process, is holding a RESERVED, -** PENDING, or EXCLUSIVE lock on the file. It returns true -** if such a lock exists and false otherwise. -** -** The xFileControl() method is a generic interface that allows custom -** VFS implementations to directly control an open file using the -** [sqlite3_file_control()] interface. The second "op" argument is an -** integer opcode. The third argument is a generic pointer intended to -** point to a structure that may contain arguments or space in which to -** write return values. Potential uses for xFileControl() might be -** functions to enable blocking locks with timeouts, to change the -** locking strategy (for example to use dot-file locks), to inquire -** about the status of a lock, or to break stale locks. The SQLite -** core reserves all opcodes less than 100 for its own use. -** A [SQLITE_FCNTL_LOCKSTATE | list of opcodes] less than 100 is available. -** Applications that define a custom xFileControl method should use opcodes -** greater than 100 to avoid conflicts. VFS implementations should -** return [SQLITE_NOTFOUND] for file control opcodes that they do not -** recognize. -** -** The xSectorSize() method returns the sector size of the -** device that underlies the file. The sector size is the -** minimum write that can be performed without disturbing -** other bytes in the file. The xDeviceCharacteristics() -** method returns a bit vector describing behaviors of the -** underlying device: -** -**
      -**
    • [SQLITE_IOCAP_ATOMIC] -**
    • [SQLITE_IOCAP_ATOMIC512] -**
    • [SQLITE_IOCAP_ATOMIC1K] -**
    • [SQLITE_IOCAP_ATOMIC2K] -**
    • [SQLITE_IOCAP_ATOMIC4K] -**
    • [SQLITE_IOCAP_ATOMIC8K] -**
    • [SQLITE_IOCAP_ATOMIC16K] -**
    • [SQLITE_IOCAP_ATOMIC32K] -**
    • [SQLITE_IOCAP_ATOMIC64K] -**
    • [SQLITE_IOCAP_SAFE_APPEND] -**
    • [SQLITE_IOCAP_SEQUENTIAL] -**
    -** -** The SQLITE_IOCAP_ATOMIC property means that all writes of -** any size are atomic. The SQLITE_IOCAP_ATOMICnnn values -** mean that writes of blocks that are nnn bytes in size and -** are aligned to an address which is an integer multiple of -** nnn are atomic. The SQLITE_IOCAP_SAFE_APPEND value means -** that when data is appended to a file, the data is appended -** first then the size of the file is extended, never the other -** way around. The SQLITE_IOCAP_SEQUENTIAL property means that -** information is written to disk in the same order as calls -** to xWrite(). -** -** If xRead() returns SQLITE_IOERR_SHORT_READ it must also fill -** in the unread portions of the buffer with zeros. A VFS that -** fails to zero-fill short reads might seem to work. However, -** failure to zero-fill short reads will eventually lead to -** database corruption. -*/ -typedef struct sqlite3_io_methods sqlite3_io_methods; -struct sqlite3_io_methods { - int iVersion; - int (*xClose)(sqlite3_file*); - int (*xRead)(sqlite3_file*, void*, int iAmt, sqlite3_int64 iOfst); - int (*xWrite)(sqlite3_file*, const void*, int iAmt, sqlite3_int64 iOfst); - int (*xTruncate)(sqlite3_file*, sqlite3_int64 size); - int (*xSync)(sqlite3_file*, int flags); - int (*xFileSize)(sqlite3_file*, sqlite3_int64 *pSize); - int (*xLock)(sqlite3_file*, int); - int (*xUnlock)(sqlite3_file*, int); - int (*xCheckReservedLock)(sqlite3_file*, int *pResOut); - int (*xFileControl)(sqlite3_file*, int op, void *pArg); - int (*xSectorSize)(sqlite3_file*); - int (*xDeviceCharacteristics)(sqlite3_file*); - /* Methods above are valid for version 1 */ - int (*xShmMap)(sqlite3_file*, int iPg, int pgsz, int, void volatile**); - int (*xShmLock)(sqlite3_file*, int offset, int n, int flags); - void (*xShmBarrier)(sqlite3_file*); - int (*xShmUnmap)(sqlite3_file*, int deleteFlag); - /* Methods above are valid for version 2 */ - /* Additional methods may be added in future releases */ -}; - -/* -** CAPI3REF: Standard File Control Opcodes -** -** These integer constants are opcodes for the xFileControl method -** of the [sqlite3_io_methods] object and for the [sqlite3_file_control()] -** interface. -** -** The [SQLITE_FCNTL_LOCKSTATE] opcode is used for debugging. This -** opcode causes the xFileControl method to write the current state of -** the lock (one of [SQLITE_LOCK_NONE], [SQLITE_LOCK_SHARED], -** [SQLITE_LOCK_RESERVED], [SQLITE_LOCK_PENDING], or [SQLITE_LOCK_EXCLUSIVE]) -** into an integer that the pArg argument points to. This capability -** is used during testing and only needs to be supported when SQLITE_TEST -** is defined. -** -** The [SQLITE_FCNTL_SIZE_HINT] opcode is used by SQLite to give the VFS -** layer a hint of how large the database file will grow to be during the -** current transaction. This hint is not guaranteed to be accurate but it -** is often close. The underlying VFS might choose to preallocate database -** file space based on this hint in order to help writes to the database -** file run faster. -** -** The [SQLITE_FCNTL_CHUNK_SIZE] opcode is used to request that the VFS -** extends and truncates the database file in chunks of a size specified -** by the user. The fourth argument to [sqlite3_file_control()] should -** point to an integer (type int) containing the new chunk-size to use -** for the nominated database. Allocating database file space in large -** chunks (say 1MB at a time), may reduce file-system fragmentation and -** improve performance on some systems. -** -** The [SQLITE_FCNTL_FILE_POINTER] opcode is used to obtain a pointer -** to the [sqlite3_file] object associated with a particular database -** connection. See the [sqlite3_file_control()] documentation for -** additional information. -** -** ^(The [SQLITE_FCNTL_SYNC_OMITTED] opcode is generated internally by -** SQLite and sent to all VFSes in place of a call to the xSync method -** when the database connection has [PRAGMA synchronous] set to OFF.)^ -** Some specialized VFSes need this signal in order to operate correctly -** when [PRAGMA synchronous | PRAGMA synchronous=OFF] is set, but most -** VFSes do not need this signal and should silently ignore this opcode. -** Applications should not call [sqlite3_file_control()] with this -** opcode as doing so may disrupt the operation of the specialized VFSes -** that do require it. -** -** ^The [SQLITE_FCNTL_WIN32_AV_RETRY] opcode is used to configure automatic -** retry counts and intervals for certain disk I/O operations for the -** windows [VFS] in order to work to provide robustness against -** anti-virus programs. By default, the windows VFS will retry file read, -** file write, and file delete operations up to 10 times, with a delay -** of 25 milliseconds before the first retry and with the delay increasing -** by an additional 25 milliseconds with each subsequent retry. This -** opcode allows those to values (10 retries and 25 milliseconds of delay) -** to be adjusted. The values are changed for all database connections -** within the same process. The argument is a pointer to an array of two -** integers where the first integer i the new retry count and the second -** integer is the delay. If either integer is negative, then the setting -** is not changed but instead the prior value of that setting is written -** into the array entry, allowing the current retry settings to be -** interrogated. The zDbName parameter is ignored. -** -** ^The [SQLITE_FCNTL_PERSIST_WAL] opcode is used to set or query the -** persistent [WAL | Write AHead Log] setting. By default, the auxiliary -** write ahead log and shared memory files used for transaction control -** are automatically deleted when the latest connection to the database -** closes. Setting persistent WAL mode causes those files to persist after -** close. Persisting the files is useful when other processes that do not -** have write permission on the directory containing the database file want -** to read the database file, as the WAL and shared memory files must exist -** in order for the database to be readable. The fourth parameter to -** [sqlite3_file_control()] for this opcode should be a pointer to an integer. -** That integer is 0 to disable persistent WAL mode or 1 to enable persistent -** WAL mode. If the integer is -1, then it is overwritten with the current -** WAL persistence setting. -** -** ^The [SQLITE_FCNTL_OVERWRITE] opcode is invoked by SQLite after opening -** a write transaction to indicate that, unless it is rolled back for some -** reason, the entire database file will be overwritten by the current -** transaction. This is used by VACUUM operations. -*/ -#define SQLITE_FCNTL_LOCKSTATE 1 -#define SQLITE_GET_LOCKPROXYFILE 2 -#define SQLITE_SET_LOCKPROXYFILE 3 -#define SQLITE_LAST_ERRNO 4 -#define SQLITE_FCNTL_SIZE_HINT 5 -#define SQLITE_FCNTL_CHUNK_SIZE 6 -#define SQLITE_FCNTL_FILE_POINTER 7 -#define SQLITE_FCNTL_SYNC_OMITTED 8 -#define SQLITE_FCNTL_WIN32_AV_RETRY 9 -#define SQLITE_FCNTL_PERSIST_WAL 10 -#define SQLITE_FCNTL_OVERWRITE 11 - -/* -** CAPI3REF: Mutex Handle -** -** The mutex module within SQLite defines [sqlite3_mutex] to be an -** abstract type for a mutex object. The SQLite core never looks -** at the internal representation of an [sqlite3_mutex]. It only -** deals with pointers to the [sqlite3_mutex] object. -** -** Mutexes are created using [sqlite3_mutex_alloc()]. -*/ -typedef struct sqlite3_mutex sqlite3_mutex; - -/* -** CAPI3REF: OS Interface Object -** -** An instance of the sqlite3_vfs object defines the interface between -** the SQLite core and the underlying operating system. The "vfs" -** in the name of the object stands for "virtual file system". See -** the [VFS | VFS documentation] for further information. -** -** The value of the iVersion field is initially 1 but may be larger in -** future versions of SQLite. Additional fields may be appended to this -** object when the iVersion value is increased. Note that the structure -** of the sqlite3_vfs object changes in the transaction between -** SQLite version 3.5.9 and 3.6.0 and yet the iVersion field was not -** modified. -** -** The szOsFile field is the size of the subclassed [sqlite3_file] -** structure used by this VFS. mxPathname is the maximum length of -** a pathname in this VFS. -** -** Registered sqlite3_vfs objects are kept on a linked list formed by -** the pNext pointer. The [sqlite3_vfs_register()] -** and [sqlite3_vfs_unregister()] interfaces manage this list -** in a thread-safe way. The [sqlite3_vfs_find()] interface -** searches the list. Neither the application code nor the VFS -** implementation should use the pNext pointer. -** -** The pNext field is the only field in the sqlite3_vfs -** structure that SQLite will ever modify. SQLite will only access -** or modify this field while holding a particular static mutex. -** The application should never modify anything within the sqlite3_vfs -** object once the object has been registered. -** -** The zName field holds the name of the VFS module. The name must -** be unique across all VFS modules. -** -** [[sqlite3_vfs.xOpen]] -** ^SQLite guarantees that the zFilename parameter to xOpen -** is either a NULL pointer or string obtained -** from xFullPathname() with an optional suffix added. -** ^If a suffix is added to the zFilename parameter, it will -** consist of a single "-" character followed by no more than -** 10 alphanumeric and/or "-" characters. -** ^SQLite further guarantees that -** the string will be valid and unchanged until xClose() is -** called. Because of the previous sentence, -** the [sqlite3_file] can safely store a pointer to the -** filename if it needs to remember the filename for some reason. -** If the zFilename parameter to xOpen is a NULL pointer then xOpen -** must invent its own temporary name for the file. ^Whenever the -** xFilename parameter is NULL it will also be the case that the -** flags parameter will include [SQLITE_OPEN_DELETEONCLOSE]. -** -** The flags argument to xOpen() includes all bits set in -** the flags argument to [sqlite3_open_v2()]. Or if [sqlite3_open()] -** or [sqlite3_open16()] is used, then flags includes at least -** [SQLITE_OPEN_READWRITE] | [SQLITE_OPEN_CREATE]. -** If xOpen() opens a file read-only then it sets *pOutFlags to -** include [SQLITE_OPEN_READONLY]. Other bits in *pOutFlags may be set. -** -** ^(SQLite will also add one of the following flags to the xOpen() -** call, depending on the object being opened: -** -**
      -**
    • [SQLITE_OPEN_MAIN_DB] -**
    • [SQLITE_OPEN_MAIN_JOURNAL] -**
    • [SQLITE_OPEN_TEMP_DB] -**
    • [SQLITE_OPEN_TEMP_JOURNAL] -**
    • [SQLITE_OPEN_TRANSIENT_DB] -**
    • [SQLITE_OPEN_SUBJOURNAL] -**
    • [SQLITE_OPEN_MASTER_JOURNAL] -**
    • [SQLITE_OPEN_WAL] -**
    )^ -** -** The file I/O implementation can use the object type flags to -** change the way it deals with files. For example, an application -** that does not care about crash recovery or rollback might make -** the open of a journal file a no-op. Writes to this journal would -** also be no-ops, and any attempt to read the journal would return -** SQLITE_IOERR. Or the implementation might recognize that a database -** file will be doing page-aligned sector reads and writes in a random -** order and set up its I/O subsystem accordingly. -** -** SQLite might also add one of the following flags to the xOpen method: -** -**
      -**
    • [SQLITE_OPEN_DELETEONCLOSE] -**
    • [SQLITE_OPEN_EXCLUSIVE] -**
    -** -** The [SQLITE_OPEN_DELETEONCLOSE] flag means the file should be -** deleted when it is closed. ^The [SQLITE_OPEN_DELETEONCLOSE] -** will be set for TEMP databases and their journals, transient -** databases, and subjournals. -** -** ^The [SQLITE_OPEN_EXCLUSIVE] flag is always used in conjunction -** with the [SQLITE_OPEN_CREATE] flag, which are both directly -** analogous to the O_EXCL and O_CREAT flags of the POSIX open() -** API. The SQLITE_OPEN_EXCLUSIVE flag, when paired with the -** SQLITE_OPEN_CREATE, is used to indicate that file should always -** be created, and that it is an error if it already exists. -** It is not used to indicate the file should be opened -** for exclusive access. -** -** ^At least szOsFile bytes of memory are allocated by SQLite -** to hold the [sqlite3_file] structure passed as the third -** argument to xOpen. The xOpen method does not have to -** allocate the structure; it should just fill it in. Note that -** the xOpen method must set the sqlite3_file.pMethods to either -** a valid [sqlite3_io_methods] object or to NULL. xOpen must do -** this even if the open fails. SQLite expects that the sqlite3_file.pMethods -** element will be valid after xOpen returns regardless of the success -** or failure of the xOpen call. -** -** [[sqlite3_vfs.xAccess]] -** ^The flags argument to xAccess() may be [SQLITE_ACCESS_EXISTS] -** to test for the existence of a file, or [SQLITE_ACCESS_READWRITE] to -** test whether a file is readable and writable, or [SQLITE_ACCESS_READ] -** to test whether a file is at least readable. The file can be a -** directory. -** -** ^SQLite will always allocate at least mxPathname+1 bytes for the -** output buffer xFullPathname. The exact size of the output buffer -** is also passed as a parameter to both methods. If the output buffer -** is not large enough, [SQLITE_CANTOPEN] should be returned. Since this is -** handled as a fatal error by SQLite, vfs implementations should endeavor -** to prevent this by setting mxPathname to a sufficiently large value. -** -** The xRandomness(), xSleep(), xCurrentTime(), and xCurrentTimeInt64() -** interfaces are not strictly a part of the filesystem, but they are -** included in the VFS structure for completeness. -** The xRandomness() function attempts to return nBytes bytes -** of good-quality randomness into zOut. The return value is -** the actual number of bytes of randomness obtained. -** The xSleep() method causes the calling thread to sleep for at -** least the number of microseconds given. ^The xCurrentTime() -** method returns a Julian Day Number for the current date and time as -** a floating point value. -** ^The xCurrentTimeInt64() method returns, as an integer, the Julian -** Day Number multiplied by 86400000 (the number of milliseconds in -** a 24-hour day). -** ^SQLite will use the xCurrentTimeInt64() method to get the current -** date and time if that method is available (if iVersion is 2 or -** greater and the function pointer is not NULL) and will fall back -** to xCurrentTime() if xCurrentTimeInt64() is unavailable. -** -** ^The xSetSystemCall(), xGetSystemCall(), and xNestSystemCall() interfaces -** are not used by the SQLite core. These optional interfaces are provided -** by some VFSes to facilitate testing of the VFS code. By overriding -** system calls with functions under its control, a test program can -** simulate faults and error conditions that would otherwise be difficult -** or impossible to induce. The set of system calls that can be overridden -** varies from one VFS to another, and from one version of the same VFS to the -** next. Applications that use these interfaces must be prepared for any -** or all of these interfaces to be NULL or for their behavior to change -** from one release to the next. Applications must not attempt to access -** any of these methods if the iVersion of the VFS is less than 3. -*/ -typedef struct sqlite3_vfs sqlite3_vfs; -typedef void (*sqlite3_syscall_ptr)(void); -struct sqlite3_vfs { - int iVersion; /* Structure version number (currently 3) */ - int szOsFile; /* Size of subclassed sqlite3_file */ - int mxPathname; /* Maximum file pathname length */ - sqlite3_vfs *pNext; /* Next registered VFS */ - const char *zName; /* Name of this virtual file system */ - void *pAppData; /* Pointer to application-specific data */ - int (*xOpen)(sqlite3_vfs*, const char *zName, sqlite3_file*, - int flags, int *pOutFlags); - int (*xDelete)(sqlite3_vfs*, const char *zName, int syncDir); - int (*xAccess)(sqlite3_vfs*, const char *zName, int flags, int *pResOut); - int (*xFullPathname)(sqlite3_vfs*, const char *zName, int nOut, char *zOut); - void *(*xDlOpen)(sqlite3_vfs*, const char *zFilename); - void (*xDlError)(sqlite3_vfs*, int nByte, char *zErrMsg); - void (*(*xDlSym)(sqlite3_vfs*,void*, const char *zSymbol))(void); - void (*xDlClose)(sqlite3_vfs*, void*); - int (*xRandomness)(sqlite3_vfs*, int nByte, char *zOut); - int (*xSleep)(sqlite3_vfs*, int microseconds); - int (*xCurrentTime)(sqlite3_vfs*, double*); - int (*xGetLastError)(sqlite3_vfs*, int, char *); - /* - ** The methods above are in version 1 of the sqlite_vfs object - ** definition. Those that follow are added in version 2 or later - */ - int (*xCurrentTimeInt64)(sqlite3_vfs*, sqlite3_int64*); - /* - ** The methods above are in versions 1 and 2 of the sqlite_vfs object. - ** Those below are for version 3 and greater. - */ - int (*xSetSystemCall)(sqlite3_vfs*, const char *zName, sqlite3_syscall_ptr); - sqlite3_syscall_ptr (*xGetSystemCall)(sqlite3_vfs*, const char *zName); - const char *(*xNextSystemCall)(sqlite3_vfs*, const char *zName); - /* - ** The methods above are in versions 1 through 3 of the sqlite_vfs object. - ** New fields may be appended in figure versions. The iVersion - ** value will increment whenever this happens. - */ -}; - -/* -** CAPI3REF: Flags for the xAccess VFS method -** -** These integer constants can be used as the third parameter to -** the xAccess method of an [sqlite3_vfs] object. They determine -** what kind of permissions the xAccess method is looking for. -** With SQLITE_ACCESS_EXISTS, the xAccess method -** simply checks whether the file exists. -** With SQLITE_ACCESS_READWRITE, the xAccess method -** checks whether the named directory is both readable and writable -** (in other words, if files can be added, removed, and renamed within -** the directory). -** The SQLITE_ACCESS_READWRITE constant is currently used only by the -** [temp_store_directory pragma], though this could change in a future -** release of SQLite. -** With SQLITE_ACCESS_READ, the xAccess method -** checks whether the file is readable. The SQLITE_ACCESS_READ constant is -** currently unused, though it might be used in a future release of -** SQLite. -*/ -#define SQLITE_ACCESS_EXISTS 0 -#define SQLITE_ACCESS_READWRITE 1 /* Used by PRAGMA temp_store_directory */ -#define SQLITE_ACCESS_READ 2 /* Unused */ - -/* -** CAPI3REF: Flags for the xShmLock VFS method -** -** These integer constants define the various locking operations -** allowed by the xShmLock method of [sqlite3_io_methods]. The -** following are the only legal combinations of flags to the -** xShmLock method: -** -**
      -**
    • SQLITE_SHM_LOCK | SQLITE_SHM_SHARED -**
    • SQLITE_SHM_LOCK | SQLITE_SHM_EXCLUSIVE -**
    • SQLITE_SHM_UNLOCK | SQLITE_SHM_SHARED -**
    • SQLITE_SHM_UNLOCK | SQLITE_SHM_EXCLUSIVE -**
    -** -** When unlocking, the same SHARED or EXCLUSIVE flag must be supplied as -** was given no the corresponding lock. -** -** The xShmLock method can transition between unlocked and SHARED or -** between unlocked and EXCLUSIVE. It cannot transition between SHARED -** and EXCLUSIVE. -*/ -#define SQLITE_SHM_UNLOCK 1 -#define SQLITE_SHM_LOCK 2 -#define SQLITE_SHM_SHARED 4 -#define SQLITE_SHM_EXCLUSIVE 8 - -/* -** CAPI3REF: Maximum xShmLock index -** -** The xShmLock method on [sqlite3_io_methods] may use values -** between 0 and this upper bound as its "offset" argument. -** The SQLite core will never attempt to acquire or release a -** lock outside of this range -*/ -#define SQLITE_SHM_NLOCK 8 - - -/* -** CAPI3REF: Initialize The SQLite Library -** -** ^The sqlite3_initialize() routine initializes the -** SQLite library. ^The sqlite3_shutdown() routine -** deallocates any resources that were allocated by sqlite3_initialize(). -** These routines are designed to aid in process initialization and -** shutdown on embedded systems. Workstation applications using -** SQLite normally do not need to invoke either of these routines. -** -** A call to sqlite3_initialize() is an "effective" call if it is -** the first time sqlite3_initialize() is invoked during the lifetime of -** the process, or if it is the first time sqlite3_initialize() is invoked -** following a call to sqlite3_shutdown(). ^(Only an effective call -** of sqlite3_initialize() does any initialization. All other calls -** are harmless no-ops.)^ -** -** A call to sqlite3_shutdown() is an "effective" call if it is the first -** call to sqlite3_shutdown() since the last sqlite3_initialize(). ^(Only -** an effective call to sqlite3_shutdown() does any deinitialization. -** All other valid calls to sqlite3_shutdown() are harmless no-ops.)^ -** -** The sqlite3_initialize() interface is threadsafe, but sqlite3_shutdown() -** is not. The sqlite3_shutdown() interface must only be called from a -** single thread. All open [database connections] must be closed and all -** other SQLite resources must be deallocated prior to invoking -** sqlite3_shutdown(). -** -** Among other things, ^sqlite3_initialize() will invoke -** sqlite3_os_init(). Similarly, ^sqlite3_shutdown() -** will invoke sqlite3_os_end(). -** -** ^The sqlite3_initialize() routine returns [SQLITE_OK] on success. -** ^If for some reason, sqlite3_initialize() is unable to initialize -** the library (perhaps it is unable to allocate a needed resource such -** as a mutex) it returns an [error code] other than [SQLITE_OK]. -** -** ^The sqlite3_initialize() routine is called internally by many other -** SQLite interfaces so that an application usually does not need to -** invoke sqlite3_initialize() directly. For example, [sqlite3_open()] -** calls sqlite3_initialize() so the SQLite library will be automatically -** initialized when [sqlite3_open()] is called if it has not be initialized -** already. ^However, if SQLite is compiled with the [SQLITE_OMIT_AUTOINIT] -** compile-time option, then the automatic calls to sqlite3_initialize() -** are omitted and the application must call sqlite3_initialize() directly -** prior to using any other SQLite interface. For maximum portability, -** it is recommended that applications always invoke sqlite3_initialize() -** directly prior to using any other SQLite interface. Future releases -** of SQLite may require this. In other words, the behavior exhibited -** when SQLite is compiled with [SQLITE_OMIT_AUTOINIT] might become the -** default behavior in some future release of SQLite. -** -** The sqlite3_os_init() routine does operating-system specific -** initialization of the SQLite library. The sqlite3_os_end() -** routine undoes the effect of sqlite3_os_init(). Typical tasks -** performed by these routines include allocation or deallocation -** of static resources, initialization of global variables, -** setting up a default [sqlite3_vfs] module, or setting up -** a default configuration using [sqlite3_config()]. -** -** The application should never invoke either sqlite3_os_init() -** or sqlite3_os_end() directly. The application should only invoke -** sqlite3_initialize() and sqlite3_shutdown(). The sqlite3_os_init() -** interface is called automatically by sqlite3_initialize() and -** sqlite3_os_end() is called by sqlite3_shutdown(). Appropriate -** implementations for sqlite3_os_init() and sqlite3_os_end() -** are built into SQLite when it is compiled for Unix, Windows, or OS/2. -** When [custom builds | built for other platforms] -** (using the [SQLITE_OS_OTHER=1] compile-time -** option) the application must supply a suitable implementation for -** sqlite3_os_init() and sqlite3_os_end(). An application-supplied -** implementation of sqlite3_os_init() or sqlite3_os_end() -** must return [SQLITE_OK] on success and some other [error code] upon -** failure. -*/ -int sqlite3_initialize(void); -int sqlite3_shutdown(void); -int sqlite3_os_init(void); -int sqlite3_os_end(void); - -/* -** CAPI3REF: Configuring The SQLite Library -** -** The sqlite3_config() interface is used to make global configuration -** changes to SQLite in order to tune SQLite to the specific needs of -** the application. The default configuration is recommended for most -** applications and so this routine is usually not necessary. It is -** provided to support rare applications with unusual needs. -** -** The sqlite3_config() interface is not threadsafe. The application -** must insure that no other SQLite interfaces are invoked by other -** threads while sqlite3_config() is running. Furthermore, sqlite3_config() -** may only be invoked prior to library initialization using -** [sqlite3_initialize()] or after shutdown by [sqlite3_shutdown()]. -** ^If sqlite3_config() is called after [sqlite3_initialize()] and before -** [sqlite3_shutdown()] then it will return SQLITE_MISUSE. -** Note, however, that ^sqlite3_config() can be called as part of the -** implementation of an application-defined [sqlite3_os_init()]. -** -** The first argument to sqlite3_config() is an integer -** [configuration option] that determines -** what property of SQLite is to be configured. Subsequent arguments -** vary depending on the [configuration option] -** in the first argument. -** -** ^When a configuration option is set, sqlite3_config() returns [SQLITE_OK]. -** ^If the option is unknown or SQLite is unable to set the option -** then this routine returns a non-zero [error code]. -*/ -int sqlite3_config(int, ...); - -/* -** CAPI3REF: Configure database connections -** -** The sqlite3_db_config() interface is used to make configuration -** changes to a [database connection]. The interface is similar to -** [sqlite3_config()] except that the changes apply to a single -** [database connection] (specified in the first argument). -** -** The second argument to sqlite3_db_config(D,V,...) is the -** [SQLITE_DBCONFIG_LOOKASIDE | configuration verb] - an integer code -** that indicates what aspect of the [database connection] is being configured. -** Subsequent arguments vary depending on the configuration verb. -** -** ^Calls to sqlite3_db_config() return SQLITE_OK if and only if -** the call is considered successful. -*/ -int sqlite3_db_config(sqlite3*, int op, ...); - -/* -** CAPI3REF: Memory Allocation Routines -** -** An instance of this object defines the interface between SQLite -** and low-level memory allocation routines. -** -** This object is used in only one place in the SQLite interface. -** A pointer to an instance of this object is the argument to -** [sqlite3_config()] when the configuration option is -** [SQLITE_CONFIG_MALLOC] or [SQLITE_CONFIG_GETMALLOC]. -** By creating an instance of this object -** and passing it to [sqlite3_config]([SQLITE_CONFIG_MALLOC]) -** during configuration, an application can specify an alternative -** memory allocation subsystem for SQLite to use for all of its -** dynamic memory needs. -** -** Note that SQLite comes with several [built-in memory allocators] -** that are perfectly adequate for the overwhelming majority of applications -** and that this object is only useful to a tiny minority of applications -** with specialized memory allocation requirements. This object is -** also used during testing of SQLite in order to specify an alternative -** memory allocator that simulates memory out-of-memory conditions in -** order to verify that SQLite recovers gracefully from such -** conditions. -** -** The xMalloc, xRealloc, and xFree methods must work like the -** malloc(), realloc() and free() functions from the standard C library. -** ^SQLite guarantees that the second argument to -** xRealloc is always a value returned by a prior call to xRoundup. -** -** xSize should return the allocated size of a memory allocation -** previously obtained from xMalloc or xRealloc. The allocated size -** is always at least as big as the requested size but may be larger. -** -** The xRoundup method returns what would be the allocated size of -** a memory allocation given a particular requested size. Most memory -** allocators round up memory allocations at least to the next multiple -** of 8. Some allocators round up to a larger multiple or to a power of 2. -** Every memory allocation request coming in through [sqlite3_malloc()] -** or [sqlite3_realloc()] first calls xRoundup. If xRoundup returns 0, -** that causes the corresponding memory allocation to fail. -** -** The xInit method initializes the memory allocator. (For example, -** it might allocate any require mutexes or initialize internal data -** structures. The xShutdown method is invoked (indirectly) by -** [sqlite3_shutdown()] and should deallocate any resources acquired -** by xInit. The pAppData pointer is used as the only parameter to -** xInit and xShutdown. -** -** SQLite holds the [SQLITE_MUTEX_STATIC_MASTER] mutex when it invokes -** the xInit method, so the xInit method need not be threadsafe. The -** xShutdown method is only called from [sqlite3_shutdown()] so it does -** not need to be threadsafe either. For all other methods, SQLite -** holds the [SQLITE_MUTEX_STATIC_MEM] mutex as long as the -** [SQLITE_CONFIG_MEMSTATUS] configuration option is turned on (which -** it is by default) and so the methods are automatically serialized. -** However, if [SQLITE_CONFIG_MEMSTATUS] is disabled, then the other -** methods must be threadsafe or else make their own arrangements for -** serialization. -** -** SQLite will never invoke xInit() more than once without an intervening -** call to xShutdown(). -*/ -typedef struct sqlite3_mem_methods sqlite3_mem_methods; -struct sqlite3_mem_methods { - void *(*xMalloc)(int); /* Memory allocation function */ - void (*xFree)(void*); /* Free a prior allocation */ - void *(*xRealloc)(void*,int); /* Resize an allocation */ - int (*xSize)(void*); /* Return the size of an allocation */ - int (*xRoundup)(int); /* Round up request size to allocation size */ - int (*xInit)(void*); /* Initialize the memory allocator */ - void (*xShutdown)(void*); /* Deinitialize the memory allocator */ - void *pAppData; /* Argument to xInit() and xShutdown() */ -}; - -/* -** CAPI3REF: Configuration Options -** KEYWORDS: {configuration option} -** -** These constants are the available integer configuration options that -** can be passed as the first argument to the [sqlite3_config()] interface. -** -** New configuration options may be added in future releases of SQLite. -** Existing configuration options might be discontinued. Applications -** should check the return code from [sqlite3_config()] to make sure that -** the call worked. The [sqlite3_config()] interface will return a -** non-zero [error code] if a discontinued or unsupported configuration option -** is invoked. -** -**
    -** [[SQLITE_CONFIG_SINGLETHREAD]]
    SQLITE_CONFIG_SINGLETHREAD
    -**
    There are no arguments to this option. ^This option sets the -** [threading mode] to Single-thread. In other words, it disables -** all mutexing and puts SQLite into a mode where it can only be used -** by a single thread. ^If SQLite is compiled with -** the [SQLITE_THREADSAFE | SQLITE_THREADSAFE=0] compile-time option then -** it is not possible to change the [threading mode] from its default -** value of Single-thread and so [sqlite3_config()] will return -** [SQLITE_ERROR] if called with the SQLITE_CONFIG_SINGLETHREAD -** configuration option.
    -** -** [[SQLITE_CONFIG_MULTITHREAD]]
    SQLITE_CONFIG_MULTITHREAD
    -**
    There are no arguments to this option. ^This option sets the -** [threading mode] to Multi-thread. In other words, it disables -** mutexing on [database connection] and [prepared statement] objects. -** The application is responsible for serializing access to -** [database connections] and [prepared statements]. But other mutexes -** are enabled so that SQLite will be safe to use in a multi-threaded -** environment as long as no two threads attempt to use the same -** [database connection] at the same time. ^If SQLite is compiled with -** the [SQLITE_THREADSAFE | SQLITE_THREADSAFE=0] compile-time option then -** it is not possible to set the Multi-thread [threading mode] and -** [sqlite3_config()] will return [SQLITE_ERROR] if called with the -** SQLITE_CONFIG_MULTITHREAD configuration option.
    -** -** [[SQLITE_CONFIG_SERIALIZED]]
    SQLITE_CONFIG_SERIALIZED
    -**
    There are no arguments to this option. ^This option sets the -** [threading mode] to Serialized. In other words, this option enables -** all mutexes including the recursive -** mutexes on [database connection] and [prepared statement] objects. -** In this mode (which is the default when SQLite is compiled with -** [SQLITE_THREADSAFE=1]) the SQLite library will itself serialize access -** to [database connections] and [prepared statements] so that the -** application is free to use the same [database connection] or the -** same [prepared statement] in different threads at the same time. -** ^If SQLite is compiled with -** the [SQLITE_THREADSAFE | SQLITE_THREADSAFE=0] compile-time option then -** it is not possible to set the Serialized [threading mode] and -** [sqlite3_config()] will return [SQLITE_ERROR] if called with the -** SQLITE_CONFIG_SERIALIZED configuration option.
    -** -** [[SQLITE_CONFIG_MALLOC]]
    SQLITE_CONFIG_MALLOC
    -**
    ^(This option takes a single argument which is a pointer to an -** instance of the [sqlite3_mem_methods] structure. The argument specifies -** alternative low-level memory allocation routines to be used in place of -** the memory allocation routines built into SQLite.)^ ^SQLite makes -** its own private copy of the content of the [sqlite3_mem_methods] structure -** before the [sqlite3_config()] call returns.
    -** -** [[SQLITE_CONFIG_GETMALLOC]]
    SQLITE_CONFIG_GETMALLOC
    -**
    ^(This option takes a single argument which is a pointer to an -** instance of the [sqlite3_mem_methods] structure. The [sqlite3_mem_methods] -** structure is filled with the currently defined memory allocation routines.)^ -** This option can be used to overload the default memory allocation -** routines with a wrapper that simulations memory allocation failure or -** tracks memory usage, for example.
    -** -** [[SQLITE_CONFIG_MEMSTATUS]]
    SQLITE_CONFIG_MEMSTATUS
    -**
    ^This option takes single argument of type int, interpreted as a -** boolean, which enables or disables the collection of memory allocation -** statistics. ^(When memory allocation statistics are disabled, the -** following SQLite interfaces become non-operational: -**
      -**
    • [sqlite3_memory_used()] -**
    • [sqlite3_memory_highwater()] -**
    • [sqlite3_soft_heap_limit64()] -**
    • [sqlite3_status()] -**
    )^ -** ^Memory allocation statistics are enabled by default unless SQLite is -** compiled with [SQLITE_DEFAULT_MEMSTATUS]=0 in which case memory -** allocation statistics are disabled by default. -**
    -** -** [[SQLITE_CONFIG_SCRATCH]]
    SQLITE_CONFIG_SCRATCH
    -**
    ^This option specifies a static memory buffer that SQLite can use for -** scratch memory. There are three arguments: A pointer an 8-byte -** aligned memory buffer from which the scratch allocations will be -** drawn, the size of each scratch allocation (sz), -** and the maximum number of scratch allocations (N). The sz -** argument must be a multiple of 16. -** The first argument must be a pointer to an 8-byte aligned buffer -** of at least sz*N bytes of memory. -** ^SQLite will use no more than two scratch buffers per thread. So -** N should be set to twice the expected maximum number of threads. -** ^SQLite will never require a scratch buffer that is more than 6 -** times the database page size. ^If SQLite needs needs additional -** scratch memory beyond what is provided by this configuration option, then -** [sqlite3_malloc()] will be used to obtain the memory needed.
    -** -** [[SQLITE_CONFIG_PAGECACHE]]
    SQLITE_CONFIG_PAGECACHE
    -**
    ^This option specifies a static memory buffer that SQLite can use for -** the database page cache with the default page cache implementation. -** This configuration should not be used if an application-define page -** cache implementation is loaded using the SQLITE_CONFIG_PCACHE option. -** There are three arguments to this option: A pointer to 8-byte aligned -** memory, the size of each page buffer (sz), and the number of pages (N). -** The sz argument should be the size of the largest database page -** (a power of two between 512 and 32768) plus a little extra for each -** page header. ^The page header size is 20 to 40 bytes depending on -** the host architecture. ^It is harmless, apart from the wasted memory, -** to make sz a little too large. The first -** argument should point to an allocation of at least sz*N bytes of memory. -** ^SQLite will use the memory provided by the first argument to satisfy its -** memory needs for the first N pages that it adds to cache. ^If additional -** page cache memory is needed beyond what is provided by this option, then -** SQLite goes to [sqlite3_malloc()] for the additional storage space. -** The pointer in the first argument must -** be aligned to an 8-byte boundary or subsequent behavior of SQLite -** will be undefined.
    -** -** [[SQLITE_CONFIG_HEAP]]
    SQLITE_CONFIG_HEAP
    -**
    ^This option specifies a static memory buffer that SQLite will use -** for all of its dynamic memory allocation needs beyond those provided -** for by [SQLITE_CONFIG_SCRATCH] and [SQLITE_CONFIG_PAGECACHE]. -** There are three arguments: An 8-byte aligned pointer to the memory, -** the number of bytes in the memory buffer, and the minimum allocation size. -** ^If the first pointer (the memory pointer) is NULL, then SQLite reverts -** to using its default memory allocator (the system malloc() implementation), -** undoing any prior invocation of [SQLITE_CONFIG_MALLOC]. ^If the -** memory pointer is not NULL and either [SQLITE_ENABLE_MEMSYS3] or -** [SQLITE_ENABLE_MEMSYS5] are defined, then the alternative memory -** allocator is engaged to handle all of SQLites memory allocation needs. -** The first pointer (the memory pointer) must be aligned to an 8-byte -** boundary or subsequent behavior of SQLite will be undefined. -** The minimum allocation size is capped at 2**12. Reasonable values -** for the minimum allocation size are 2**5 through 2**8.
    -** -** [[SQLITE_CONFIG_MUTEX]]
    SQLITE_CONFIG_MUTEX
    -**
    ^(This option takes a single argument which is a pointer to an -** instance of the [sqlite3_mutex_methods] structure. The argument specifies -** alternative low-level mutex routines to be used in place -** the mutex routines built into SQLite.)^ ^SQLite makes a copy of the -** content of the [sqlite3_mutex_methods] structure before the call to -** [sqlite3_config()] returns. ^If SQLite is compiled with -** the [SQLITE_THREADSAFE | SQLITE_THREADSAFE=0] compile-time option then -** the entire mutexing subsystem is omitted from the build and hence calls to -** [sqlite3_config()] with the SQLITE_CONFIG_MUTEX configuration option will -** return [SQLITE_ERROR].
    -** -** [[SQLITE_CONFIG_GETMUTEX]]
    SQLITE_CONFIG_GETMUTEX
    -**
    ^(This option takes a single argument which is a pointer to an -** instance of the [sqlite3_mutex_methods] structure. The -** [sqlite3_mutex_methods] -** structure is filled with the currently defined mutex routines.)^ -** This option can be used to overload the default mutex allocation -** routines with a wrapper used to track mutex usage for performance -** profiling or testing, for example. ^If SQLite is compiled with -** the [SQLITE_THREADSAFE | SQLITE_THREADSAFE=0] compile-time option then -** the entire mutexing subsystem is omitted from the build and hence calls to -** [sqlite3_config()] with the SQLITE_CONFIG_GETMUTEX configuration option will -** return [SQLITE_ERROR].
    -** -** [[SQLITE_CONFIG_LOOKASIDE]]
    SQLITE_CONFIG_LOOKASIDE
    -**
    ^(This option takes two arguments that determine the default -** memory allocation for the lookaside memory allocator on each -** [database connection]. The first argument is the -** size of each lookaside buffer slot and the second is the number of -** slots allocated to each database connection.)^ ^(This option sets the -** default lookaside size. The [SQLITE_DBCONFIG_LOOKASIDE] -** verb to [sqlite3_db_config()] can be used to change the lookaside -** configuration on individual connections.)^
    -** -** [[SQLITE_CONFIG_PCACHE]]
    SQLITE_CONFIG_PCACHE
    -**
    ^(This option takes a single argument which is a pointer to -** an [sqlite3_pcache_methods] object. This object specifies the interface -** to a custom page cache implementation.)^ ^SQLite makes a copy of the -** object and uses it for page cache memory allocations.
    -** -** [[SQLITE_CONFIG_GETPCACHE]]
    SQLITE_CONFIG_GETPCACHE
    -**
    ^(This option takes a single argument which is a pointer to an -** [sqlite3_pcache_methods] object. SQLite copies of the current -** page cache implementation into that object.)^
    -** -** [[SQLITE_CONFIG_LOG]]
    SQLITE_CONFIG_LOG
    -**
    ^The SQLITE_CONFIG_LOG option takes two arguments: a pointer to a -** function with a call signature of void(*)(void*,int,const char*), -** and a pointer to void. ^If the function pointer is not NULL, it is -** invoked by [sqlite3_log()] to process each logging event. ^If the -** function pointer is NULL, the [sqlite3_log()] interface becomes a no-op. -** ^The void pointer that is the second argument to SQLITE_CONFIG_LOG is -** passed through as the first parameter to the application-defined logger -** function whenever that function is invoked. ^The second parameter to -** the logger function is a copy of the first parameter to the corresponding -** [sqlite3_log()] call and is intended to be a [result code] or an -** [extended result code]. ^The third parameter passed to the logger is -** log message after formatting via [sqlite3_snprintf()]. -** The SQLite logging interface is not reentrant; the logger function -** supplied by the application must not invoke any SQLite interface. -** In a multi-threaded application, the application-defined logger -** function must be threadsafe.
    -** -** [[SQLITE_CONFIG_URI]]
    SQLITE_CONFIG_URI -**
    This option takes a single argument of type int. If non-zero, then -** URI handling is globally enabled. If the parameter is zero, then URI handling -** is globally disabled. If URI handling is globally enabled, all filenames -** passed to [sqlite3_open()], [sqlite3_open_v2()], [sqlite3_open16()] or -** specified as part of [ATTACH] commands are interpreted as URIs, regardless -** of whether or not the [SQLITE_OPEN_URI] flag is set when the database -** connection is opened. If it is globally disabled, filenames are -** only interpreted as URIs if the SQLITE_OPEN_URI flag is set when the -** database connection is opened. By default, URI handling is globally -** disabled. The default value may be changed by compiling with the -** [SQLITE_USE_URI] symbol defined. -**
    -*/ -#define SQLITE_CONFIG_SINGLETHREAD 1 /* nil */ -#define SQLITE_CONFIG_MULTITHREAD 2 /* nil */ -#define SQLITE_CONFIG_SERIALIZED 3 /* nil */ -#define SQLITE_CONFIG_MALLOC 4 /* sqlite3_mem_methods* */ -#define SQLITE_CONFIG_GETMALLOC 5 /* sqlite3_mem_methods* */ -#define SQLITE_CONFIG_SCRATCH 6 /* void*, int sz, int N */ -#define SQLITE_CONFIG_PAGECACHE 7 /* void*, int sz, int N */ -#define SQLITE_CONFIG_HEAP 8 /* void*, int nByte, int min */ -#define SQLITE_CONFIG_MEMSTATUS 9 /* boolean */ -#define SQLITE_CONFIG_MUTEX 10 /* sqlite3_mutex_methods* */ -#define SQLITE_CONFIG_GETMUTEX 11 /* sqlite3_mutex_methods* */ -/* previously SQLITE_CONFIG_CHUNKALLOC 12 which is now unused. */ -#define SQLITE_CONFIG_LOOKASIDE 13 /* int int */ -#define SQLITE_CONFIG_PCACHE 14 /* sqlite3_pcache_methods* */ -#define SQLITE_CONFIG_GETPCACHE 15 /* sqlite3_pcache_methods* */ -#define SQLITE_CONFIG_LOG 16 /* xFunc, void* */ -#define SQLITE_CONFIG_URI 17 /* int */ - -/* -** CAPI3REF: Database Connection Configuration Options -** -** These constants are the available integer configuration options that -** can be passed as the second argument to the [sqlite3_db_config()] interface. -** -** New configuration options may be added in future releases of SQLite. -** Existing configuration options might be discontinued. Applications -** should check the return code from [sqlite3_db_config()] to make sure that -** the call worked. ^The [sqlite3_db_config()] interface will return a -** non-zero [error code] if a discontinued or unsupported configuration option -** is invoked. -** -**
    -**
    SQLITE_DBCONFIG_LOOKASIDE
    -**
    ^This option takes three additional arguments that determine the -** [lookaside memory allocator] configuration for the [database connection]. -** ^The first argument (the third parameter to [sqlite3_db_config()] is a -** pointer to a memory buffer to use for lookaside memory. -** ^The first argument after the SQLITE_DBCONFIG_LOOKASIDE verb -** may be NULL in which case SQLite will allocate the -** lookaside buffer itself using [sqlite3_malloc()]. ^The second argument is the -** size of each lookaside buffer slot. ^The third argument is the number of -** slots. The size of the buffer in the first argument must be greater than -** or equal to the product of the second and third arguments. The buffer -** must be aligned to an 8-byte boundary. ^If the second argument to -** SQLITE_DBCONFIG_LOOKASIDE is not a multiple of 8, it is internally -** rounded down to the next smaller multiple of 8. ^(The lookaside memory -** configuration for a database connection can only be changed when that -** connection is not currently using lookaside memory, or in other words -** when the "current value" returned by -** [sqlite3_db_status](D,[SQLITE_CONFIG_LOOKASIDE],...) is zero. -** Any attempt to change the lookaside memory configuration when lookaside -** memory is in use leaves the configuration unchanged and returns -** [SQLITE_BUSY].)^
    -** -**
    SQLITE_DBCONFIG_ENABLE_FKEY
    -**
    ^This option is used to enable or disable the enforcement of -** [foreign key constraints]. There should be two additional arguments. -** The first argument is an integer which is 0 to disable FK enforcement, -** positive to enable FK enforcement or negative to leave FK enforcement -** unchanged. The second parameter is a pointer to an integer into which -** is written 0 or 1 to indicate whether FK enforcement is off or on -** following this call. The second parameter may be a NULL pointer, in -** which case the FK enforcement setting is not reported back.
    -** -**
    SQLITE_DBCONFIG_ENABLE_TRIGGER
    -**
    ^This option is used to enable or disable [CREATE TRIGGER | triggers]. -** There should be two additional arguments. -** The first argument is an integer which is 0 to disable triggers, -** positive to enable triggers or negative to leave the setting unchanged. -** The second parameter is a pointer to an integer into which -** is written 0 or 1 to indicate whether triggers are disabled or enabled -** following this call. The second parameter may be a NULL pointer, in -** which case the trigger setting is not reported back.
    -** -**
    -*/ -#define SQLITE_DBCONFIG_LOOKASIDE 1001 /* void* int int */ -#define SQLITE_DBCONFIG_ENABLE_FKEY 1002 /* int int* */ -#define SQLITE_DBCONFIG_ENABLE_TRIGGER 1003 /* int int* */ - - -/* -** CAPI3REF: Enable Or Disable Extended Result Codes -** -** ^The sqlite3_extended_result_codes() routine enables or disables the -** [extended result codes] feature of SQLite. ^The extended result -** codes are disabled by default for historical compatibility. -*/ -int sqlite3_extended_result_codes(sqlite3*, int onoff); - -/* -** CAPI3REF: Last Insert Rowid -** -** ^Each entry in an SQLite table has a unique 64-bit signed -** integer key called the [ROWID | "rowid"]. ^The rowid is always available -** as an undeclared column named ROWID, OID, or _ROWID_ as long as those -** names are not also used by explicitly declared columns. ^If -** the table has a column of type [INTEGER PRIMARY KEY] then that column -** is another alias for the rowid. -** -** ^This routine returns the [rowid] of the most recent -** successful [INSERT] into the database from the [database connection] -** in the first argument. ^As of SQLite version 3.7.7, this routines -** records the last insert rowid of both ordinary tables and [virtual tables]. -** ^If no successful [INSERT]s -** have ever occurred on that database connection, zero is returned. -** -** ^(If an [INSERT] occurs within a trigger or within a [virtual table] -** method, then this routine will return the [rowid] of the inserted -** row as long as the trigger or virtual table method is running. -** But once the trigger or virtual table method ends, the value returned -** by this routine reverts to what it was before the trigger or virtual -** table method began.)^ -** -** ^An [INSERT] that fails due to a constraint violation is not a -** successful [INSERT] and does not change the value returned by this -** routine. ^Thus INSERT OR FAIL, INSERT OR IGNORE, INSERT OR ROLLBACK, -** and INSERT OR ABORT make no changes to the return value of this -** routine when their insertion fails. ^(When INSERT OR REPLACE -** encounters a constraint violation, it does not fail. The -** INSERT continues to completion after deleting rows that caused -** the constraint problem so INSERT OR REPLACE will always change -** the return value of this interface.)^ -** -** ^For the purposes of this routine, an [INSERT] is considered to -** be successful even if it is subsequently rolled back. -** -** This function is accessible to SQL statements via the -** [last_insert_rowid() SQL function]. -** -** If a separate thread performs a new [INSERT] on the same -** database connection while the [sqlite3_last_insert_rowid()] -** function is running and thus changes the last insert [rowid], -** then the value returned by [sqlite3_last_insert_rowid()] is -** unpredictable and might not equal either the old or the new -** last insert [rowid]. -*/ -sqlite3_int64 sqlite3_last_insert_rowid(sqlite3*); - -/* -** CAPI3REF: Count The Number Of Rows Modified -** -** ^This function returns the number of database rows that were changed -** or inserted or deleted by the most recently completed SQL statement -** on the [database connection] specified by the first parameter. -** ^(Only changes that are directly specified by the [INSERT], [UPDATE], -** or [DELETE] statement are counted. Auxiliary changes caused by -** triggers or [foreign key actions] are not counted.)^ Use the -** [sqlite3_total_changes()] function to find the total number of changes -** including changes caused by triggers and foreign key actions. -** -** ^Changes to a view that are simulated by an [INSTEAD OF trigger] -** are not counted. Only real table changes are counted. -** -** ^(A "row change" is a change to a single row of a single table -** caused by an INSERT, DELETE, or UPDATE statement. Rows that -** are changed as side effects of [REPLACE] constraint resolution, -** rollback, ABORT processing, [DROP TABLE], or by any other -** mechanisms do not count as direct row changes.)^ -** -** A "trigger context" is a scope of execution that begins and -** ends with the script of a [CREATE TRIGGER | trigger]. -** Most SQL statements are -** evaluated outside of any trigger. This is the "top level" -** trigger context. If a trigger fires from the top level, a -** new trigger context is entered for the duration of that one -** trigger. Subtriggers create subcontexts for their duration. -** -** ^Calling [sqlite3_exec()] or [sqlite3_step()] recursively does -** not create a new trigger context. -** -** ^This function returns the number of direct row changes in the -** most recent INSERT, UPDATE, or DELETE statement within the same -** trigger context. -** -** ^Thus, when called from the top level, this function returns the -** number of changes in the most recent INSERT, UPDATE, or DELETE -** that also occurred at the top level. ^(Within the body of a trigger, -** the sqlite3_changes() interface can be called to find the number of -** changes in the most recently completed INSERT, UPDATE, or DELETE -** statement within the body of the same trigger. -** However, the number returned does not include changes -** caused by subtriggers since those have their own context.)^ -** -** See also the [sqlite3_total_changes()] interface, the -** [count_changes pragma], and the [changes() SQL function]. -** -** If a separate thread makes changes on the same database connection -** while [sqlite3_changes()] is running then the value returned -** is unpredictable and not meaningful. -*/ -int sqlite3_changes(sqlite3*); - -/* -** CAPI3REF: Total Number Of Rows Modified -** -** ^This function returns the number of row changes caused by [INSERT], -** [UPDATE] or [DELETE] statements since the [database connection] was opened. -** ^(The count returned by sqlite3_total_changes() includes all changes -** from all [CREATE TRIGGER | trigger] contexts and changes made by -** [foreign key actions]. However, -** the count does not include changes used to implement [REPLACE] constraints, -** do rollbacks or ABORT processing, or [DROP TABLE] processing. The -** count does not include rows of views that fire an [INSTEAD OF trigger], -** though if the INSTEAD OF trigger makes changes of its own, those changes -** are counted.)^ -** ^The sqlite3_total_changes() function counts the changes as soon as -** the statement that makes them is completed (when the statement handle -** is passed to [sqlite3_reset()] or [sqlite3_finalize()]). -** -** See also the [sqlite3_changes()] interface, the -** [count_changes pragma], and the [total_changes() SQL function]. -** -** If a separate thread makes changes on the same database connection -** while [sqlite3_total_changes()] is running then the value -** returned is unpredictable and not meaningful. -*/ -int sqlite3_total_changes(sqlite3*); - -/* -** CAPI3REF: Interrupt A Long-Running Query -** -** ^This function causes any pending database operation to abort and -** return at its earliest opportunity. This routine is typically -** called in response to a user action such as pressing "Cancel" -** or Ctrl-C where the user wants a long query operation to halt -** immediately. -** -** ^It is safe to call this routine from a thread different from the -** thread that is currently running the database operation. But it -** is not safe to call this routine with a [database connection] that -** is closed or might close before sqlite3_interrupt() returns. -** -** ^If an SQL operation is very nearly finished at the time when -** sqlite3_interrupt() is called, then it might not have an opportunity -** to be interrupted and might continue to completion. -** -** ^An SQL operation that is interrupted will return [SQLITE_INTERRUPT]. -** ^If the interrupted SQL operation is an INSERT, UPDATE, or DELETE -** that is inside an explicit transaction, then the entire transaction -** will be rolled back automatically. -** -** ^The sqlite3_interrupt(D) call is in effect until all currently running -** SQL statements on [database connection] D complete. ^Any new SQL statements -** that are started after the sqlite3_interrupt() call and before the -** running statements reaches zero are interrupted as if they had been -** running prior to the sqlite3_interrupt() call. ^New SQL statements -** that are started after the running statement count reaches zero are -** not effected by the sqlite3_interrupt(). -** ^A call to sqlite3_interrupt(D) that occurs when there are no running -** SQL statements is a no-op and has no effect on SQL statements -** that are started after the sqlite3_interrupt() call returns. -** -** If the database connection closes while [sqlite3_interrupt()] -** is running then bad things will likely happen. -*/ -void sqlite3_interrupt(sqlite3*); - -/* -** CAPI3REF: Determine If An SQL Statement Is Complete -** -** These routines are useful during command-line input to determine if the -** currently entered text seems to form a complete SQL statement or -** if additional input is needed before sending the text into -** SQLite for parsing. ^These routines return 1 if the input string -** appears to be a complete SQL statement. ^A statement is judged to be -** complete if it ends with a semicolon token and is not a prefix of a -** well-formed CREATE TRIGGER statement. ^Semicolons that are embedded within -** string literals or quoted identifier names or comments are not -** independent tokens (they are part of the token in which they are -** embedded) and thus do not count as a statement terminator. ^Whitespace -** and comments that follow the final semicolon are ignored. -** -** ^These routines return 0 if the statement is incomplete. ^If a -** memory allocation fails, then SQLITE_NOMEM is returned. -** -** ^These routines do not parse the SQL statements thus -** will not detect syntactically incorrect SQL. -** -** ^(If SQLite has not been initialized using [sqlite3_initialize()] prior -** to invoking sqlite3_complete16() then sqlite3_initialize() is invoked -** automatically by sqlite3_complete16(). If that initialization fails, -** then the return value from sqlite3_complete16() will be non-zero -** regardless of whether or not the input SQL is complete.)^ -** -** The input to [sqlite3_complete()] must be a zero-terminated -** UTF-8 string. -** -** The input to [sqlite3_complete16()] must be a zero-terminated -** UTF-16 string in native byte order. -*/ -int sqlite3_complete(const char *sql); -int sqlite3_complete16(const void *sql); - -/* -** CAPI3REF: Register A Callback To Handle SQLITE_BUSY Errors -** -** ^This routine sets a callback function that might be invoked whenever -** an attempt is made to open a database table that another thread -** or process has locked. -** -** ^If the busy callback is NULL, then [SQLITE_BUSY] or [SQLITE_IOERR_BLOCKED] -** is returned immediately upon encountering the lock. ^If the busy callback -** is not NULL, then the callback might be invoked with two arguments. -** -** ^The first argument to the busy handler is a copy of the void* pointer which -** is the third argument to sqlite3_busy_handler(). ^The second argument to -** the busy handler callback is the number of times that the busy handler has -** been invoked for this locking event. ^If the -** busy callback returns 0, then no additional attempts are made to -** access the database and [SQLITE_BUSY] or [SQLITE_IOERR_BLOCKED] is returned. -** ^If the callback returns non-zero, then another attempt -** is made to open the database for reading and the cycle repeats. -** -** The presence of a busy handler does not guarantee that it will be invoked -** when there is lock contention. ^If SQLite determines that invoking the busy -** handler could result in a deadlock, it will go ahead and return [SQLITE_BUSY] -** or [SQLITE_IOERR_BLOCKED] instead of invoking the busy handler. -** Consider a scenario where one process is holding a read lock that -** it is trying to promote to a reserved lock and -** a second process is holding a reserved lock that it is trying -** to promote to an exclusive lock. The first process cannot proceed -** because it is blocked by the second and the second process cannot -** proceed because it is blocked by the first. If both processes -** invoke the busy handlers, neither will make any progress. Therefore, -** SQLite returns [SQLITE_BUSY] for the first process, hoping that this -** will induce the first process to release its read lock and allow -** the second process to proceed. -** -** ^The default busy callback is NULL. -** -** ^The [SQLITE_BUSY] error is converted to [SQLITE_IOERR_BLOCKED] -** when SQLite is in the middle of a large transaction where all the -** changes will not fit into the in-memory cache. SQLite will -** already hold a RESERVED lock on the database file, but it needs -** to promote this lock to EXCLUSIVE so that it can spill cache -** pages into the database file without harm to concurrent -** readers. ^If it is unable to promote the lock, then the in-memory -** cache will be left in an inconsistent state and so the error -** code is promoted from the relatively benign [SQLITE_BUSY] to -** the more severe [SQLITE_IOERR_BLOCKED]. ^This error code promotion -** forces an automatic rollback of the changes. See the -** -** CorruptionFollowingBusyError wiki page for a discussion of why -** this is important. -** -** ^(There can only be a single busy handler defined for each -** [database connection]. Setting a new busy handler clears any -** previously set handler.)^ ^Note that calling [sqlite3_busy_timeout()] -** will also set or clear the busy handler. -** -** The busy callback should not take any actions which modify the -** database connection that invoked the busy handler. Any such actions -** result in undefined behavior. -** -** A busy handler must not close the database connection -** or [prepared statement] that invoked the busy handler. -*/ -int sqlite3_busy_handler(sqlite3*, int(*)(void*,int), void*); - -/* -** CAPI3REF: Set A Busy Timeout -** -** ^This routine sets a [sqlite3_busy_handler | busy handler] that sleeps -** for a specified amount of time when a table is locked. ^The handler -** will sleep multiple times until at least "ms" milliseconds of sleeping -** have accumulated. ^After at least "ms" milliseconds of sleeping, -** the handler returns 0 which causes [sqlite3_step()] to return -** [SQLITE_BUSY] or [SQLITE_IOERR_BLOCKED]. -** -** ^Calling this routine with an argument less than or equal to zero -** turns off all busy handlers. -** -** ^(There can only be a single busy handler for a particular -** [database connection] any any given moment. If another busy handler -** was defined (using [sqlite3_busy_handler()]) prior to calling -** this routine, that other busy handler is cleared.)^ -*/ -int sqlite3_busy_timeout(sqlite3*, int ms); - -/* -** CAPI3REF: Convenience Routines For Running Queries -** -** This is a legacy interface that is preserved for backwards compatibility. -** Use of this interface is not recommended. -** -** Definition: A result table is memory data structure created by the -** [sqlite3_get_table()] interface. A result table records the -** complete query results from one or more queries. -** -** The table conceptually has a number of rows and columns. But -** these numbers are not part of the result table itself. These -** numbers are obtained separately. Let N be the number of rows -** and M be the number of columns. -** -** A result table is an array of pointers to zero-terminated UTF-8 strings. -** There are (N+1)*M elements in the array. The first M pointers point -** to zero-terminated strings that contain the names of the columns. -** The remaining entries all point to query results. NULL values result -** in NULL pointers. All other values are in their UTF-8 zero-terminated -** string representation as returned by [sqlite3_column_text()]. -** -** A result table might consist of one or more memory allocations. -** It is not safe to pass a result table directly to [sqlite3_free()]. -** A result table should be deallocated using [sqlite3_free_table()]. -** -** ^(As an example of the result table format, suppose a query result -** is as follows: -** -** 
    -**        Name        | Age
-**        -----------------------
-**        Alice       | 43
-**        Bob         | 28
-**        Cindy       | 21
-**
    -** -** There are two column (M==2) and three rows (N==3). Thus the -** result table has 8 entries. Suppose the result table is stored -** in an array names azResult. Then azResult holds this content: -** -** 
    -**        azResult[0] = "Name";
-**        azResult[1] = "Age";
-**        azResult[2] = "Alice";
-**        azResult[3] = "43";
-**        azResult[4] = "Bob";
-**        azResult[5] = "28";
-**        azResult[6] = "Cindy";
-**        azResult[7] = "21";
-**
    )^ -** -** ^The sqlite3_get_table() function evaluates one or more -** semicolon-separated SQL statements in the zero-terminated UTF-8 -** string of its 2nd parameter and returns a result table to the -** pointer given in its 3rd parameter. -** -** After the application has finished with the result from sqlite3_get_table(), -** it must pass the result table pointer to sqlite3_free_table() in order to -** release the memory that was malloced. Because of the way the -** [sqlite3_malloc()] happens within sqlite3_get_table(), the calling -** function must not try to call [sqlite3_free()] directly. Only -** [sqlite3_free_table()] is able to release the memory properly and safely. -** -** The sqlite3_get_table() interface is implemented as a wrapper around -** [sqlite3_exec()]. The sqlite3_get_table() routine does not have access -** to any internal data structures of SQLite. It uses only the public -** interface defined here. As a consequence, errors that occur in the -** wrapper layer outside of the internal [sqlite3_exec()] call are not -** reflected in subsequent calls to [sqlite3_errcode()] or -** [sqlite3_errmsg()]. -*/ -int sqlite3_get_table( - sqlite3 *db, /* An open database */ - const char *zSql, /* SQL to be evaluated */ - char ***pazResult, /* Results of the query */ - int *pnRow, /* Number of result rows written here */ - int *pnColumn, /* Number of result columns written here */ - char **pzErrmsg /* Error msg written here */ -); -void sqlite3_free_table(char **result); - -/* -** CAPI3REF: Formatted String Printing Functions -** -** These routines are work-alikes of the "printf()" family of functions -** from the standard C library. -** -** ^The sqlite3_mprintf() and sqlite3_vmprintf() routines write their -** results into memory obtained from [sqlite3_malloc()]. -** The strings returned by these two routines should be -** released by [sqlite3_free()]. ^Both routines return a -** NULL pointer if [sqlite3_malloc()] is unable to allocate enough -** memory to hold the resulting string. -** -** ^(The sqlite3_snprintf() routine is similar to "snprintf()" from -** the standard C library. The result is written into the -** buffer supplied as the second parameter whose size is given by -** the first parameter. Note that the order of the -** first two parameters is reversed from snprintf().)^ This is an -** historical accident that cannot be fixed without breaking -** backwards compatibility. ^(Note also that sqlite3_snprintf() -** returns a pointer to its buffer instead of the number of -** characters actually written into the buffer.)^ We admit that -** the number of characters written would be a more useful return -** value but we cannot change the implementation of sqlite3_snprintf() -** now without breaking compatibility. -** -** ^As long as the buffer size is greater than zero, sqlite3_snprintf() -** guarantees that the buffer is always zero-terminated. ^The first -** parameter "n" is the total size of the buffer, including space for -** the zero terminator. So the longest string that can be completely -** written will be n-1 characters. -** -** ^The sqlite3_vsnprintf() routine is a varargs version of sqlite3_snprintf(). -** -** These routines all implement some additional formatting -** options that are useful for constructing SQL statements. -** All of the usual printf() formatting options apply. In addition, there -** is are "%q", "%Q", and "%z" options. -** -** ^(The %q option works like %s in that it substitutes a null-terminated -** string from the argument list. But %q also doubles every '\'' character. -** %q is designed for use inside a string literal.)^ By doubling each '\'' -** character it escapes that character and allows it to be inserted into -** the string. -** -** For example, assume the string variable zText contains text as follows: -** -** 
    -**  char *zText = "It's a happy day!";
-**
    -** -** One can use this text in an SQL statement as follows: -** -** 
    -**  char *zSQL = sqlite3_mprintf("INSERT INTO table VALUES('%q')", zText);
-**  sqlite3_exec(db, zSQL, 0, 0, 0);
-**  sqlite3_free(zSQL);
-**
    -** -** Because the %q format string is used, the '\'' character in zText -** is escaped and the SQL generated is as follows: -** -** 
    -**  INSERT INTO table1 VALUES('It''s a happy day!')
-**
    -** -** This is correct. Had we used %s instead of %q, the generated SQL -** would have looked like this: -** -** 
    -**  INSERT INTO table1 VALUES('It's a happy day!');
-**
    -** -** This second example is an SQL syntax error. As a general rule you should -** always use %q instead of %s when inserting text into a string literal. -** -** ^(The %Q option works like %q except it also adds single quotes around -** the outside of the total string. Additionally, if the parameter in the -** argument list is a NULL pointer, %Q substitutes the text "NULL" (without -** single quotes).)^ So, for example, one could say: -** -** 
    -**  char *zSQL = sqlite3_mprintf("INSERT INTO table VALUES(%Q)", zText);
-**  sqlite3_exec(db, zSQL, 0, 0, 0);
-**  sqlite3_free(zSQL);
-**
    -** -** The code above will render a correct SQL statement in the zSQL -** variable even if the zText variable is a NULL pointer. -** -** ^(The "%z" formatting option works like "%s" but with the -** addition that after the string has been read and copied into -** the result, [sqlite3_free()] is called on the input string.)^ -*/ -char *sqlite3_mprintf(const char*,...); -char *sqlite3_vmprintf(const char*, va_list); -char *sqlite3_snprintf(int,char*,const char*, ...); -char *sqlite3_vsnprintf(int,char*,const char*, va_list); - -/* -** CAPI3REF: Memory Allocation Subsystem -** -** The SQLite core uses these three routines for all of its own -** internal memory allocation needs. "Core" in the previous sentence -** does not include operating-system specific VFS implementation. The -** Windows VFS uses native malloc() and free() for some operations. -** -** ^The sqlite3_malloc() routine returns a pointer to a block -** of memory at least N bytes in length, where N is the parameter. -** ^If sqlite3_malloc() is unable to obtain sufficient free -** memory, it returns a NULL pointer. ^If the parameter N to -** sqlite3_malloc() is zero or negative then sqlite3_malloc() returns -** a NULL pointer. -** -** ^Calling sqlite3_free() with a pointer previously returned -** by sqlite3_malloc() or sqlite3_realloc() releases that memory so -** that it might be reused. ^The sqlite3_free() routine is -** a no-op if is called with a NULL pointer. Passing a NULL pointer -** to sqlite3_free() is harmless. After being freed, memory -** should neither be read nor written. Even reading previously freed -** memory might result in a segmentation fault or other severe error. -** Memory corruption, a segmentation fault, or other severe error -** might result if sqlite3_free() is called with a non-NULL pointer that -** was not obtained from sqlite3_malloc() or sqlite3_realloc(). -** -** ^(The sqlite3_realloc() interface attempts to resize a -** prior memory allocation to be at least N bytes, where N is the -** second parameter. The memory allocation to be resized is the first -** parameter.)^ ^ If the first parameter to sqlite3_realloc() -** is a NULL pointer then its behavior is identical to calling -** sqlite3_malloc(N) where N is the second parameter to sqlite3_realloc(). -** ^If the second parameter to sqlite3_realloc() is zero or -** negative then the behavior is exactly the same as calling -** sqlite3_free(P) where P is the first parameter to sqlite3_realloc(). -** ^sqlite3_realloc() returns a pointer to a memory allocation -** of at least N bytes in size or NULL if sufficient memory is unavailable. -** ^If M is the size of the prior allocation, then min(N,M) bytes -** of the prior allocation are copied into the beginning of buffer returned -** by sqlite3_realloc() and the prior allocation is freed. -** ^If sqlite3_realloc() returns NULL, then the prior allocation -** is not freed. -** -** ^The memory returned by sqlite3_malloc() and sqlite3_realloc() -** is always aligned to at least an 8 byte boundary, or to a -** 4 byte boundary if the [SQLITE_4_BYTE_ALIGNED_MALLOC] compile-time -** option is used. -** -** In SQLite version 3.5.0 and 3.5.1, it was possible to define -** the SQLITE_OMIT_MEMORY_ALLOCATION which would cause the built-in -** implementation of these routines to be omitted. That capability -** is no longer provided. Only built-in memory allocators can be used. -** -** The Windows OS interface layer calls -** the system malloc() and free() directly when converting -** filenames between the UTF-8 encoding used by SQLite -** and whatever filename encoding is used by the particular Windows -** installation. Memory allocation errors are detected, but -** they are reported back as [SQLITE_CANTOPEN] or -** [SQLITE_IOERR] rather than [SQLITE_NOMEM]. -** -** The pointer arguments to [sqlite3_free()] and [sqlite3_realloc()] -** must be either NULL or else pointers obtained from a prior -** invocation of [sqlite3_malloc()] or [sqlite3_realloc()] that have -** not yet been released. -** -** The application must not read or write any part of -** a block of memory after it has been released using -** [sqlite3_free()] or [sqlite3_realloc()]. -*/ -void *sqlite3_malloc(int); -void *sqlite3_realloc(void*, int); -void sqlite3_free(void*); - -/* -** CAPI3REF: Memory Allocator Statistics -** -** SQLite provides these two interfaces for reporting on the status -** of the [sqlite3_malloc()], [sqlite3_free()], and [sqlite3_realloc()] -** routines, which form the built-in memory allocation subsystem. -** -** ^The [sqlite3_memory_used()] routine returns the number of bytes -** of memory currently outstanding (malloced but not freed). -** ^The [sqlite3_memory_highwater()] routine returns the maximum -** value of [sqlite3_memory_used()] since the high-water mark -** was last reset. ^The values returned by [sqlite3_memory_used()] and -** [sqlite3_memory_highwater()] include any overhead -** added by SQLite in its implementation of [sqlite3_malloc()], -** but not overhead added by the any underlying system library -** routines that [sqlite3_malloc()] may call. -** -** ^The memory high-water mark is reset to the current value of -** [sqlite3_memory_used()] if and only if the parameter to -** [sqlite3_memory_highwater()] is true. ^The value returned -** by [sqlite3_memory_highwater(1)] is the high-water mark -** prior to the reset. -*/ -sqlite3_int64 sqlite3_memory_used(void); -sqlite3_int64 sqlite3_memory_highwater(int resetFlag); - -/* -** CAPI3REF: Pseudo-Random Number Generator -** -** SQLite contains a high-quality pseudo-random number generator (PRNG) used to -** select random [ROWID | ROWIDs] when inserting new records into a table that -** already uses the largest possible [ROWID]. The PRNG is also used for -** the build-in random() and randomblob() SQL functions. This interface allows -** applications to access the same PRNG for other purposes. -** -** ^A call to this routine stores N bytes of randomness into buffer P. -** -** ^The first time this routine is invoked (either internally or by -** the application) the PRNG is seeded using randomness obtained -** from the xRandomness method of the default [sqlite3_vfs] object. -** ^On all subsequent invocations, the pseudo-randomness is generated -** internally and without recourse to the [sqlite3_vfs] xRandomness -** method. -*/ -void sqlite3_randomness(int N, void *P); - -/* -** CAPI3REF: Compile-Time Authorization Callbacks -** -** ^This routine registers an authorizer callback with a particular -** [database connection], supplied in the first argument. -** ^The authorizer callback is invoked as SQL statements are being compiled -** by [sqlite3_prepare()] or its variants [sqlite3_prepare_v2()], -** [sqlite3_prepare16()] and [sqlite3_prepare16_v2()]. ^At various -** points during the compilation process, as logic is being created -** to perform various actions, the authorizer callback is invoked to -** see if those actions are allowed. ^The authorizer callback should -** return [SQLITE_OK] to allow the action, [SQLITE_IGNORE] to disallow the -** specific action but allow the SQL statement to continue to be -** compiled, or [SQLITE_DENY] to cause the entire SQL statement to be -** rejected with an error. ^If the authorizer callback returns -** any value other than [SQLITE_IGNORE], [SQLITE_OK], or [SQLITE_DENY] -** then the [sqlite3_prepare_v2()] or equivalent call that triggered -** the authorizer will fail with an error message. -** -** When the callback returns [SQLITE_OK], that means the operation -** requested is ok. ^When the callback returns [SQLITE_DENY], the -** [sqlite3_prepare_v2()] or equivalent call that triggered the -** authorizer will fail with an error message explaining that -** access is denied. -** -** ^The first parameter to the authorizer callback is a copy of the third -** parameter to the sqlite3_set_authorizer() interface. ^The second parameter -** to the callback is an integer [SQLITE_COPY | action code] that specifies -** the particular action to be authorized. ^The third through sixth parameters -** to the callback are zero-terminated strings that contain additional -** details about the action to be authorized. -** -** ^If the action code is [SQLITE_READ] -** and the callback returns [SQLITE_IGNORE] then the -** [prepared statement] statement is constructed to substitute -** a NULL value in place of the table column that would have -** been read if [SQLITE_OK] had been returned. The [SQLITE_IGNORE] -** return can be used to deny an untrusted user access to individual -** columns of a table. -** ^If the action code is [SQLITE_DELETE] and the callback returns -** [SQLITE_IGNORE] then the [DELETE] operation proceeds but the -** [truncate optimization] is disabled and all rows are deleted individually. -** -** An authorizer is used when [sqlite3_prepare | preparing] -** SQL statements from an untrusted source, to ensure that the SQL statements -** do not try to access data they are not allowed to see, or that they do not -** try to execute malicious statements that damage the database. For -** example, an application may allow a user to enter arbitrary -** SQL queries for evaluation by a database. But the application does -** not want the user to be able to make arbitrary changes to the -** database. An authorizer could then be put in place while the -** user-entered SQL is being [sqlite3_prepare | prepared] that -** disallows everything except [SELECT] statements. -** -** Applications that need to process SQL from untrusted sources -** might also consider lowering resource limits using [sqlite3_limit()] -** and limiting database size using the [max_page_count] [PRAGMA] -** in addition to using an authorizer. -** -** ^(Only a single authorizer can be in place on a database connection -** at a time. Each call to sqlite3_set_authorizer overrides the -** previous call.)^ ^Disable the authorizer by installing a NULL callback. -** The authorizer is disabled by default. -** -** The authorizer callback must not do anything that will modify -** the database connection that invoked the authorizer callback. -** Note that [sqlite3_prepare_v2()] and [sqlite3_step()] both modify their -** database connections for the meaning of "modify" in this paragraph. -** -** ^When [sqlite3_prepare_v2()] is used to prepare a statement, the -** statement might be re-prepared during [sqlite3_step()] due to a -** schema change. Hence, the application should ensure that the -** correct authorizer callback remains in place during the [sqlite3_step()]. -** -** ^Note that the authorizer callback is invoked only during -** [sqlite3_prepare()] or its variants. Authorization is not -** performed during statement evaluation in [sqlite3_step()], unless -** as stated in the previous paragraph, sqlite3_step() invokes -** sqlite3_prepare_v2() to reprepare a statement after a schema change. -*/ -int sqlite3_set_authorizer( - sqlite3*, - int (*xAuth)(void*,int,const char*,const char*,const char*,const char*), - void *pUserData -); - -/* -** CAPI3REF: Authorizer Return Codes -** -** The [sqlite3_set_authorizer | authorizer callback function] must -** return either [SQLITE_OK] or one of these two constants in order -** to signal SQLite whether or not the action is permitted. See the -** [sqlite3_set_authorizer | authorizer documentation] for additional -** information. -** -** Note that SQLITE_IGNORE is also used as a [SQLITE_ROLLBACK | return code] -** from the [sqlite3_vtab_on_conflict()] interface. -*/ -#define SQLITE_DENY 1 /* Abort the SQL statement with an error */ -#define SQLITE_IGNORE 2 /* Don't allow access, but don't generate an error */ - -/* -** CAPI3REF: Authorizer Action Codes -** -** The [sqlite3_set_authorizer()] interface registers a callback function -** that is invoked to authorize certain SQL statement actions. The -** second parameter to the callback is an integer code that specifies -** what action is being authorized. These are the integer action codes that -** the authorizer callback may be passed. -** -** These action code values signify what kind of operation is to be -** authorized. The 3rd and 4th parameters to the authorization -** callback function will be parameters or NULL depending on which of these -** codes is used as the second parameter. ^(The 5th parameter to the -** authorizer callback is the name of the database ("main", "temp", -** etc.) if applicable.)^ ^The 6th parameter to the authorizer callback -** is the name of the inner-most trigger or view that is responsible for -** the access attempt or NULL if this access attempt is directly from -** top-level SQL code. -*/ -/******************************************* 3rd ************ 4th ***********/ -#define SQLITE_CREATE_INDEX 1 /* Index Name Table Name */ -#define SQLITE_CREATE_TABLE 2 /* Table Name NULL */ -#define SQLITE_CREATE_TEMP_INDEX 3 /* Index Name Table Name */ -#define SQLITE_CREATE_TEMP_TABLE 4 /* Table Name NULL */ -#define SQLITE_CREATE_TEMP_TRIGGER 5 /* Trigger Name Table Name */ -#define SQLITE_CREATE_TEMP_VIEW 6 /* View Name NULL */ -#define SQLITE_CREATE_TRIGGER 7 /* Trigger Name Table Name */ -#define SQLITE_CREATE_VIEW 8 /* View Name NULL */ -#define SQLITE_DELETE 9 /* Table Name NULL */ -#define SQLITE_DROP_INDEX 10 /* Index Name Table Name */ -#define SQLITE_DROP_TABLE 11 /* Table Name NULL */ -#define SQLITE_DROP_TEMP_INDEX 12 /* Index Name Table Name */ -#define SQLITE_DROP_TEMP_TABLE 13 /* Table Name NULL */ -#define SQLITE_DROP_TEMP_TRIGGER 14 /* Trigger Name Table Name */ -#define SQLITE_DROP_TEMP_VIEW 15 /* View Name NULL */ -#define SQLITE_DROP_TRIGGER 16 /* Trigger Name Table Name */ -#define SQLITE_DROP_VIEW 17 /* View Name NULL */ -#define SQLITE_INSERT 18 /* Table Name NULL */ -#define SQLITE_PRAGMA 19 /* Pragma Name 1st arg or NULL */ -#define SQLITE_READ 20 /* Table Name Column Name */ -#define SQLITE_SELECT 21 /* NULL NULL */ -#define SQLITE_TRANSACTION 22 /* Operation NULL */ -#define SQLITE_UPDATE 23 /* Table Name Column Name */ -#define SQLITE_ATTACH 24 /* Filename NULL */ -#define SQLITE_DETACH 25 /* Database Name NULL */ -#define SQLITE_ALTER_TABLE 26 /* Database Name Table Name */ -#define SQLITE_REINDEX 27 /* Index Name NULL */ -#define SQLITE_ANALYZE 28 /* Table Name NULL */ -#define SQLITE_CREATE_VTABLE 29 /* Table Name Module Name */ -#define SQLITE_DROP_VTABLE 30 /* Table Name Module Name */ -#define SQLITE_FUNCTION 31 /* NULL Function Name */ -#define SQLITE_SAVEPOINT 32 /* Operation Savepoint Name */ -#define SQLITE_COPY 0 /* No longer used */ - -/* -** CAPI3REF: Tracing And Profiling Functions -** -** These routines register callback functions that can be used for -** tracing and profiling the execution of SQL statements. -** -** ^The callback function registered by sqlite3_trace() is invoked at -** various times when an SQL statement is being run by [sqlite3_step()]. -** ^The sqlite3_trace() callback is invoked with a UTF-8 rendering of the -** SQL statement text as the statement first begins executing. -** ^(Additional sqlite3_trace() callbacks might occur -** as each triggered subprogram is entered. The callbacks for triggers -** contain a UTF-8 SQL comment that identifies the trigger.)^ -** -** ^The callback function registered by sqlite3_profile() is invoked -** as each SQL statement finishes. ^The profile callback contains -** the original statement text and an estimate of wall-clock time -** of how long that statement took to run. ^The profile callback -** time is in units of nanoseconds, however the current implementation -** is only capable of millisecond resolution so the six least significant -** digits in the time are meaningless. Future versions of SQLite -** might provide greater resolution on the profiler callback. The -** sqlite3_profile() function is considered experimental and is -** subject to change in future versions of SQLite. -*/ -void *sqlite3_trace(sqlite3*, void(*xTrace)(void*,const char*), void*); -SQLITE_EXPERIMENTAL void *sqlite3_profile(sqlite3*, - void(*xProfile)(void*,const char*,sqlite3_uint64), void*); - -/* -** CAPI3REF: Query Progress Callbacks -** -** ^The sqlite3_progress_handler(D,N,X,P) interface causes the callback -** function X to be invoked periodically during long running calls to -** [sqlite3_exec()], [sqlite3_step()] and [sqlite3_get_table()] for -** database connection D. An example use for this -** interface is to keep a GUI updated during a large query. -** -** ^The parameter P is passed through as the only parameter to the -** callback function X. ^The parameter N is the number of -** [virtual machine instructions] that are evaluated between successive -** invocations of the callback X. -** -** ^Only a single progress handler may be defined at one time per -** [database connection]; setting a new progress handler cancels the -** old one. ^Setting parameter X to NULL disables the progress handler. -** ^The progress handler is also disabled by setting N to a value less -** than 1. -** -** ^If the progress callback returns non-zero, the operation is -** interrupted. This feature can be used to implement a -** "Cancel" button on a GUI progress dialog box. -** -** The progress handler callback must not do anything that will modify -** the database connection that invoked the progress handler. -** Note that [sqlite3_prepare_v2()] and [sqlite3_step()] both modify their -** database connections for the meaning of "modify" in this paragraph. -** -*/ -void sqlite3_progress_handler(sqlite3*, int, int(*)(void*), void*); - -/* -** CAPI3REF: Opening A New Database Connection -** -** ^These routines open an SQLite database file as specified by the -** filename argument. ^The filename argument is interpreted as UTF-8 for -** sqlite3_open() and sqlite3_open_v2() and as UTF-16 in the native byte -** order for sqlite3_open16(). ^(A [database connection] handle is usually -** returned in *ppDb, even if an error occurs. The only exception is that -** if SQLite is unable to allocate memory to hold the [sqlite3] object, -** a NULL will be written into *ppDb instead of a pointer to the [sqlite3] -** object.)^ ^(If the database is opened (and/or created) successfully, then -** [SQLITE_OK] is returned. Otherwise an [error code] is returned.)^ ^The -** [sqlite3_errmsg()] or [sqlite3_errmsg16()] routines can be used to obtain -** an English language description of the error following a failure of any -** of the sqlite3_open() routines. -** -** ^The default encoding for the database will be UTF-8 if -** sqlite3_open() or sqlite3_open_v2() is called and -** UTF-16 in the native byte order if sqlite3_open16() is used. -** -** Whether or not an error occurs when it is opened, resources -** associated with the [database connection] handle should be released by -** passing it to [sqlite3_close()] when it is no longer required. -** -** The sqlite3_open_v2() interface works like sqlite3_open() -** except that it accepts two additional parameters for additional control -** over the new database connection. ^(The flags parameter to -** sqlite3_open_v2() can take one of -** the following three values, optionally combined with the -** [SQLITE_OPEN_NOMUTEX], [SQLITE_OPEN_FULLMUTEX], [SQLITE_OPEN_SHAREDCACHE], -** [SQLITE_OPEN_PRIVATECACHE], and/or [SQLITE_OPEN_URI] flags:)^ -** -**
    -** ^(
    [SQLITE_OPEN_READONLY]
    -**
    The database is opened in read-only mode. If the database does not -** already exist, an error is returned.
    )^ -** -** ^(
    [SQLITE_OPEN_READWRITE]
    -**
    The database is opened for reading and writing if possible, or reading -** only if the file is write protected by the operating system. In either -** case the database must already exist, otherwise an error is returned.
    )^ -** -** ^(
    [SQLITE_OPEN_READWRITE] | [SQLITE_OPEN_CREATE]
    -**
    The database is opened for reading and writing, and is created if -** it does not already exist. This is the behavior that is always used for -** sqlite3_open() and sqlite3_open16().
    )^ -**
    -** -** If the 3rd parameter to sqlite3_open_v2() is not one of the -** combinations shown above optionally combined with other -** [SQLITE_OPEN_READONLY | SQLITE_OPEN_* bits] -** then the behavior is undefined. -** -** ^If the [SQLITE_OPEN_NOMUTEX] flag is set, then the database connection -** opens in the multi-thread [threading mode] as long as the single-thread -** mode has not been set at compile-time or start-time. ^If the -** [SQLITE_OPEN_FULLMUTEX] flag is set then the database connection opens -** in the serialized [threading mode] unless single-thread was -** previously selected at compile-time or start-time. -** ^The [SQLITE_OPEN_SHAREDCACHE] flag causes the database connection to be -** eligible to use [shared cache mode], regardless of whether or not shared -** cache is enabled using [sqlite3_enable_shared_cache()]. ^The -** [SQLITE_OPEN_PRIVATECACHE] flag causes the database connection to not -** participate in [shared cache mode] even if it is enabled. -** -** ^The fourth parameter to sqlite3_open_v2() is the name of the -** [sqlite3_vfs] object that defines the operating system interface that -** the new database connection should use. ^If the fourth parameter is -** a NULL pointer then the default [sqlite3_vfs] object is used. -** -** ^If the filename is ":memory:", then a private, temporary in-memory database -** is created for the connection. ^This in-memory database will vanish when -** the database connection is closed. Future versions of SQLite might -** make use of additional special filenames that begin with the ":" character. -** It is recommended that when a database filename actually does begin with -** a ":" character you should prefix the filename with a pathname such as -** "./" to avoid ambiguity. -** -** ^If the filename is an empty string, then a private, temporary -** on-disk database will be created. ^This private database will be -** automatically deleted as soon as the database connection is closed. -** -** [[URI filenames in sqlite3_open()]]

    URI Filenames

    -** -** ^If [URI filename] interpretation is enabled, and the filename argument -** begins with "file:", then the filename is interpreted as a URI. ^URI -** filename interpretation is enabled if the [SQLITE_OPEN_URI] flag is -** set in the fourth argument to sqlite3_open_v2(), or if it has -** been enabled globally using the [SQLITE_CONFIG_URI] option with the -** [sqlite3_config()] method or by the [SQLITE_USE_URI] compile-time option. -** As of SQLite version 3.7.7, URI filename interpretation is turned off -** by default, but future releases of SQLite might enable URI filename -** interpretation by default. See "[URI filenames]" for additional -** information. -** -** URI filenames are parsed according to RFC 3986. ^If the URI contains an -** authority, then it must be either an empty string or the string -** "localhost". ^If the authority is not an empty string or "localhost", an -** error is returned to the caller. ^The fragment component of a URI, if -** present, is ignored. -** -** ^SQLite uses the path component of the URI as the name of the disk file -** which contains the database. ^If the path begins with a '/' character, -** then it is interpreted as an absolute path. ^If the path does not begin -** with a '/' (meaning that the authority section is omitted from the URI) -** then the path is interpreted as a relative path. -** ^On windows, the first component of an absolute path -** is a drive specification (e.g. "C:"). -** -** [[core URI query parameters]] -** The query component of a URI may contain parameters that are interpreted -** either by SQLite itself, or by a [VFS | custom VFS implementation]. -** SQLite interprets the following three query parameters: -** -**
      -**
    • vfs: ^The "vfs" parameter may be used to specify the name of -** a VFS object that provides the operating system interface that should -** be used to access the database file on disk. ^If this option is set to -** an empty string the default VFS object is used. ^Specifying an unknown -** VFS is an error. ^If sqlite3_open_v2() is used and the vfs option is -** present, then the VFS specified by the option takes precedence over -** the value passed as the fourth parameter to sqlite3_open_v2(). -** -**
    • mode: ^(The mode parameter may be set to either "ro", "rw" or -** "rwc". Attempting to set it to any other value is an error)^. -** ^If "ro" is specified, then the database is opened for read-only -** access, just as if the [SQLITE_OPEN_READONLY] flag had been set in the -** third argument to sqlite3_prepare_v2(). ^If the mode option is set to -** "rw", then the database is opened for read-write (but not create) -** access, as if SQLITE_OPEN_READWRITE (but not SQLITE_OPEN_CREATE) had -** been set. ^Value "rwc" is equivalent to setting both -** SQLITE_OPEN_READWRITE and SQLITE_OPEN_CREATE. ^If sqlite3_open_v2() is -** used, it is an error to specify a value for the mode parameter that is -** less restrictive than that specified by the flags passed as the third -** parameter. -** -**
    • cache: ^The cache parameter may be set to either "shared" or -** "private". ^Setting it to "shared" is equivalent to setting the -** SQLITE_OPEN_SHAREDCACHE bit in the flags argument passed to -** sqlite3_open_v2(). ^Setting the cache parameter to "private" is -** equivalent to setting the SQLITE_OPEN_PRIVATECACHE bit. -** ^If sqlite3_open_v2() is used and the "cache" parameter is present in -** a URI filename, its value overrides any behaviour requested by setting -** SQLITE_OPEN_PRIVATECACHE or SQLITE_OPEN_SHAREDCACHE flag. -**
    -** -** ^Specifying an unknown parameter in the query component of a URI is not an -** error. Future versions of SQLite might understand additional query -** parameters. See "[query parameters with special meaning to SQLite]" for -** additional information. -** -** [[URI filename examples]]

    URI filename examples

    -** -**
    -**
    URI filenames Results -**
    file:data.db -** Open the file "data.db" in the current directory. -**
    file:/home/fred/data.db
    -** file:///home/fred/data.db
    -** file://localhost/home/fred/data.db
    		-** Open the database file "/home/fred/data.db". -**
    file://darkstar/home/fred/data.db -** An error. "darkstar" is not a recognized authority. -**
    -** file:///C:/Documents%20and%20Settings/fred/Desktop/data.db -** Windows only: Open the file "data.db" on fred's desktop on drive -** C:. Note that the %20 escaping in this example is not strictly -** necessary - space characters can be used literally -** in URI filenames. -**
    file:data.db?mode=ro&cache=private -** Open file "data.db" in the current directory for read-only access. -** Regardless of whether or not shared-cache mode is enabled by -** default, use a private cache. -**
    file:/home/fred/data.db?vfs=unix-nolock -** Open file "/home/fred/data.db". Use the special VFS "unix-nolock". -**
    file:data.db?mode=readonly -** An error. "readonly" is not a valid option for the "mode" parameter. -**
    -** -** ^URI hexadecimal escape sequences (%HH) are supported within the path and -** query components of a URI. A hexadecimal escape sequence consists of a -** percent sign - "%" - followed by exactly two hexadecimal digits -** specifying an octet value. ^Before the path or query components of a -** URI filename are interpreted, they are encoded using UTF-8 and all -** hexadecimal escape sequences replaced by a single byte containing the -** corresponding octet. If this process generates an invalid UTF-8 encoding, -** the results are undefined. -** -** Note to Windows users: The encoding used for the filename argument -** of sqlite3_open() and sqlite3_open_v2() must be UTF-8, not whatever -** codepage is currently defined. Filenames containing international -** characters must be converted to UTF-8 prior to passing them into -** sqlite3_open() or sqlite3_open_v2(). -*/ -int sqlite3_open( - const char *filename, /* Database filename (UTF-8) */ - sqlite3 **ppDb /* OUT: SQLite db handle */ -); -int sqlite3_open16( - const void *filename, /* Database filename (UTF-16) */ - sqlite3 **ppDb /* OUT: SQLite db handle */ -); -int sqlite3_open_v2( - const char *filename, /* Database filename (UTF-8) */ - sqlite3 **ppDb, /* OUT: SQLite db handle */ - int flags, /* Flags */ - const char *zVfs /* Name of VFS module to use */ -); - -/* -** CAPI3REF: Obtain Values For URI Parameters -** -** This is a utility routine, useful to VFS implementations, that checks -** to see if a database file was a URI that contained a specific query -** parameter, and if so obtains the value of the query parameter. -** -** The zFilename argument is the filename pointer passed into the xOpen() -** method of a VFS implementation. The zParam argument is the name of the -** query parameter we seek. This routine returns the value of the zParam -** parameter if it exists. If the parameter does not exist, this routine -** returns a NULL pointer. -** -** If the zFilename argument to this function is not a pointer that SQLite -** passed into the xOpen VFS method, then the behavior of this routine -** is undefined and probably undesirable. -*/ -const char *sqlite3_uri_parameter(const char *zFilename, const char *zParam); - - -/* -** CAPI3REF: Error Codes And Messages -** -** ^The sqlite3_errcode() interface returns the numeric [result code] or -** [extended result code] for the most recent failed sqlite3_* API call -** associated with a [database connection]. If a prior API call failed -** but the most recent API call succeeded, the return value from -** sqlite3_errcode() is undefined. ^The sqlite3_extended_errcode() -** interface is the same except that it always returns the -** [extended result code] even when extended result codes are -** disabled. -** -** ^The sqlite3_errmsg() and sqlite3_errmsg16() return English-language -** text that describes the error, as either UTF-8 or UTF-16 respectively. -** ^(Memory to hold the error message string is managed internally. -** The application does not need to worry about freeing the result. -** However, the error string might be overwritten or deallocated by -** subsequent calls to other SQLite interface functions.)^ -** -** When the serialized [threading mode] is in use, it might be the -** case that a second error occurs on a separate thread in between -** the time of the first error and the call to these interfaces. -** When that happens, the second error will be reported since these -** interfaces always report the most recent result. To avoid -** this, each thread can obtain exclusive use of the [database connection] D -** by invoking [sqlite3_mutex_enter]([sqlite3_db_mutex](D)) before beginning -** to use D and invoking [sqlite3_mutex_leave]([sqlite3_db_mutex](D)) after -** all calls to the interfaces listed here are completed. -** -** If an interface fails with SQLITE_MISUSE, that means the interface -** was invoked incorrectly by the application. In that case, the -** error code and message may or may not be set. -*/ -int sqlite3_errcode(sqlite3 *db); -int sqlite3_extended_errcode(sqlite3 *db); -const char *sqlite3_errmsg(sqlite3*); -const void *sqlite3_errmsg16(sqlite3*); - -/* -** CAPI3REF: SQL Statement Object -** KEYWORDS: {prepared statement} {prepared statements} -** -** An instance of this object represents a single SQL statement. -** This object is variously known as a "prepared statement" or a -** "compiled SQL statement" or simply as a "statement". -** -** The life of a statement object goes something like this: -** -**
      -**
    1. Create the object using [sqlite3_prepare_v2()] or a related -** function. -**
    2. Bind values to [host parameters] using the sqlite3_bind_*() -** interfaces. -**
    3. Run the SQL by calling [sqlite3_step()] one or more times. -**
    4. Reset the statement using [sqlite3_reset()] then go back -** to step 2. Do this zero or more times. -**
    5. Destroy the object using [sqlite3_finalize()]. -**
    -** -** Refer to documentation on individual methods above for additional -** information. -*/ -typedef struct sqlite3_stmt sqlite3_stmt; - -/* -** CAPI3REF: Run-time Limits -** -** ^(This interface allows the size of various constructs to be limited -** on a connection by connection basis. The first parameter is the -** [database connection] whose limit is to be set or queried. The -** second parameter is one of the [limit categories] that define a -** class of constructs to be size limited. The third parameter is the -** new limit for that construct.)^ -** -** ^If the new limit is a negative number, the limit is unchanged. -** ^(For each limit category SQLITE_LIMIT_NAME there is a -** [limits | hard upper bound] -** set at compile-time by a C preprocessor macro called -** [limits | SQLITE_MAX_NAME]. -** (The "_LIMIT_" in the name is changed to "_MAX_".))^ -** ^Attempts to increase a limit above its hard upper bound are -** silently truncated to the hard upper bound. -** -** ^Regardless of whether or not the limit was changed, the -** [sqlite3_limit()] interface returns the prior value of the limit. -** ^Hence, to find the current value of a limit without changing it, -** simply invoke this interface with the third parameter set to -1. -** -** Run-time limits are intended for use in applications that manage -** both their own internal database and also databases that are controlled -** by untrusted external sources. An example application might be a -** web browser that has its own databases for storing history and -** separate databases controlled by JavaScript applications downloaded -** off the Internet. The internal databases can be given the -** large, default limits. Databases managed by external sources can -** be given much smaller limits designed to prevent a denial of service -** attack. Developers might also want to use the [sqlite3_set_authorizer()] -** interface to further control untrusted SQL. The size of the database -** created by an untrusted script can be contained using the -** [max_page_count] [PRAGMA]. -** -** New run-time limit categories may be added in future releases. -*/ -int sqlite3_limit(sqlite3*, int id, int newVal); - -/* -** CAPI3REF: Run-Time Limit Categories -** KEYWORDS: {limit category} {*limit categories} -** -** These constants define various performance limits -** that can be lowered at run-time using [sqlite3_limit()]. -** The synopsis of the meanings of the various limits is shown below. -** Additional information is available at [limits | Limits in SQLite]. -** -**
    -** [[SQLITE_LIMIT_LENGTH]] ^(
    SQLITE_LIMIT_LENGTH
    -**
    The maximum size of any string or BLOB or table row, in bytes.
    )^ -** -** [[SQLITE_LIMIT_SQL_LENGTH]] ^(
    SQLITE_LIMIT_SQL_LENGTH
    -**
    The maximum length of an SQL statement, in bytes.
    )^ -** -** [[SQLITE_LIMIT_COLUMN]] ^(
    SQLITE_LIMIT_COLUMN
    -**
    The maximum number of columns in a table definition or in the -** result set of a [SELECT] or the maximum number of columns in an index -** or in an ORDER BY or GROUP BY clause.
    )^ -** -** [[SQLITE_LIMIT_EXPR_DEPTH]] ^(
    SQLITE_LIMIT_EXPR_DEPTH
    -**
    The maximum depth of the parse tree on any expression.
    )^ -** -** [[SQLITE_LIMIT_COMPOUND_SELECT]] ^(
    SQLITE_LIMIT_COMPOUND_SELECT
    -**
    The maximum number of terms in a compound SELECT statement.
    )^ -** -** [[SQLITE_LIMIT_VDBE_OP]] ^(
    SQLITE_LIMIT_VDBE_OP
    -**
    The maximum number of instructions in a virtual machine program -** used to implement an SQL statement. This limit is not currently -** enforced, though that might be added in some future release of -** SQLite.
    )^ -** -** [[SQLITE_LIMIT_FUNCTION_ARG]] ^(
    SQLITE_LIMIT_FUNCTION_ARG
    -**
    The maximum number of arguments on a function.
    )^ -** -** [[SQLITE_LIMIT_ATTACHED]] ^(
    SQLITE_LIMIT_ATTACHED
    -**
    The maximum number of [ATTACH | attached databases].)^
    -** -** [[SQLITE_LIMIT_LIKE_PATTERN_LENGTH]] -** ^(
    SQLITE_LIMIT_LIKE_PATTERN_LENGTH
    -**
    The maximum length of the pattern argument to the [LIKE] or -** [GLOB] operators.
    )^ -** -** [[SQLITE_LIMIT_VARIABLE_NUMBER]] -** ^(
    SQLITE_LIMIT_VARIABLE_NUMBER
    -**
    The maximum index number of any [parameter] in an SQL statement.)^ -** -** [[SQLITE_LIMIT_TRIGGER_DEPTH]] ^(
    SQLITE_LIMIT_TRIGGER_DEPTH
    -**
    The maximum depth of recursion for triggers.
    )^ -**
    -*/ -#define SQLITE_LIMIT_LENGTH 0 -#define SQLITE_LIMIT_SQL_LENGTH 1 -#define SQLITE_LIMIT_COLUMN 2 -#define SQLITE_LIMIT_EXPR_DEPTH 3 -#define SQLITE_LIMIT_COMPOUND_SELECT 4 -#define SQLITE_LIMIT_VDBE_OP 5 -#define SQLITE_LIMIT_FUNCTION_ARG 6 -#define SQLITE_LIMIT_ATTACHED 7 -#define SQLITE_LIMIT_LIKE_PATTERN_LENGTH 8 -#define SQLITE_LIMIT_VARIABLE_NUMBER 9 -#define SQLITE_LIMIT_TRIGGER_DEPTH 10 - -/* -** CAPI3REF: Compiling An SQL Statement -** KEYWORDS: {SQL statement compiler} -** -** To execute an SQL query, it must first be compiled into a byte-code -** program using one of these routines. -** -** The first argument, "db", is a [database connection] obtained from a -** prior successful call to [sqlite3_open()], [sqlite3_open_v2()] or -** [sqlite3_open16()]. The database connection must not have been closed. -** -** The second argument, "zSql", is the statement to be compiled, encoded -** as either UTF-8 or UTF-16. The sqlite3_prepare() and sqlite3_prepare_v2() -** interfaces use UTF-8, and sqlite3_prepare16() and sqlite3_prepare16_v2() -** use UTF-16. -** -** ^If the nByte argument is less than zero, then zSql is read up to the -** first zero terminator. ^If nByte is non-negative, then it is the maximum -** number of bytes read from zSql. ^When nByte is non-negative, the -** zSql string ends at either the first '\000' or '\u0000' character or -** the nByte-th byte, whichever comes first. If the caller knows -** that the supplied string is nul-terminated, then there is a small -** performance advantage to be gained by passing an nByte parameter that -** is equal to the number of bytes in the input string including -** the nul-terminator bytes as this saves SQLite from having to -** make a copy of the input string. -** -** ^If pzTail is not NULL then *pzTail is made to point to the first byte -** past the end of the first SQL statement in zSql. These routines only -** compile the first statement in zSql, so *pzTail is left pointing to -** what remains uncompiled. -** -** ^*ppStmt is left pointing to a compiled [prepared statement] that can be -** executed using [sqlite3_step()]. ^If there is an error, *ppStmt is set -** to NULL. ^If the input text contains no SQL (if the input is an empty -** string or a comment) then *ppStmt is set to NULL. -** The calling procedure is responsible for deleting the compiled -** SQL statement using [sqlite3_finalize()] after it has finished with it. -** ppStmt may not be NULL. -** -** ^On success, the sqlite3_prepare() family of routines return [SQLITE_OK]; -** otherwise an [error code] is returned. -** -** The sqlite3_prepare_v2() and sqlite3_prepare16_v2() interfaces are -** recommended for all new programs. The two older interfaces are retained -** for backwards compatibility, but their use is discouraged. -** ^In the "v2" interfaces, the prepared statement -** that is returned (the [sqlite3_stmt] object) contains a copy of the -** original SQL text. This causes the [sqlite3_step()] interface to -** behave differently in three ways: -** -**
      -**
    1. -** ^If the database schema changes, instead of returning [SQLITE_SCHEMA] as it -** always used to do, [sqlite3_step()] will automatically recompile the SQL -** statement and try to run it again. -**
      2. -** -**
    2. -** ^When an error occurs, [sqlite3_step()] will return one of the detailed -** [error codes] or [extended error codes]. ^The legacy behavior was that -** [sqlite3_step()] would only return a generic [SQLITE_ERROR] result code -** and the application would have to make a second call to [sqlite3_reset()] -** in order to find the underlying cause of the problem. With the "v2" prepare -** interfaces, the underlying reason for the error is returned immediately. -**
      3. -** -**
    3. -** ^If the specific value bound to [parameter | host parameter] in the -** WHERE clause might influence the choice of query plan for a statement, -** then the statement will be automatically recompiled, as if there had been -** a schema change, on the first [sqlite3_step()] call following any change -** to the [sqlite3_bind_text | bindings] of that [parameter]. -** ^The specific value of WHERE-clause [parameter] might influence the -** choice of query plan if the parameter is the left-hand side of a [LIKE] -** or [GLOB] operator or if the parameter is compared to an indexed column -** and the [SQLITE_ENABLE_STAT3] compile-time option is enabled. -** the -**
      4. -**
    -*/ -int sqlite3_prepare( - sqlite3 *db, /* Database handle */ - const char *zSql, /* SQL statement, UTF-8 encoded */ - int nByte, /* Maximum length of zSql in bytes. */ - sqlite3_stmt **ppStmt, /* OUT: Statement handle */ - const char **pzTail /* OUT: Pointer to unused portion of zSql */ -); -int sqlite3_prepare_v2( - sqlite3 *db, /* Database handle */ - const char *zSql, /* SQL statement, UTF-8 encoded */ - int nByte, /* Maximum length of zSql in bytes. */ - sqlite3_stmt **ppStmt, /* OUT: Statement handle */ - const char **pzTail /* OUT: Pointer to unused portion of zSql */ -); -int sqlite3_prepare16( - sqlite3 *db, /* Database handle */ - const void *zSql, /* SQL statement, UTF-16 encoded */ - int nByte, /* Maximum length of zSql in bytes. */ - sqlite3_stmt **ppStmt, /* OUT: Statement handle */ - const void **pzTail /* OUT: Pointer to unused portion of zSql */ -); -int sqlite3_prepare16_v2( - sqlite3 *db, /* Database handle */ - const void *zSql, /* SQL statement, UTF-16 encoded */ - int nByte, /* Maximum length of zSql in bytes. */ - sqlite3_stmt **ppStmt, /* OUT: Statement handle */ - const void **pzTail /* OUT: Pointer to unused portion of zSql */ -); - -/* -** CAPI3REF: Retrieving Statement SQL -** -** ^This interface can be used to retrieve a saved copy of the original -** SQL text used to create a [prepared statement] if that statement was -** compiled using either [sqlite3_prepare_v2()] or [sqlite3_prepare16_v2()]. -*/ -const char *sqlite3_sql(sqlite3_stmt *pStmt); - -/* -** CAPI3REF: Determine If An SQL Statement Writes The Database -** -** ^The sqlite3_stmt_readonly(X) interface returns true (non-zero) if -** and only if the [prepared statement] X makes no direct changes to -** the content of the database file. -** -** Note that [application-defined SQL functions] or -** [virtual tables] might change the database indirectly as a side effect. -** ^(For example, if an application defines a function "eval()" that -** calls [sqlite3_exec()], then the following SQL statement would -** change the database file through side-effects: -** -** 
    -**    SELECT eval('DELETE FROM t1') FROM t2;
-**
    -** -** But because the [SELECT] statement does not change the database file -** directly, sqlite3_stmt_readonly() would still return true.)^ -** -** ^Transaction control statements such as [BEGIN], [COMMIT], [ROLLBACK], -** [SAVEPOINT], and [RELEASE] cause sqlite3_stmt_readonly() to return true, -** since the statements themselves do not actually modify the database but -** rather they control the timing of when other statements modify the -** database. ^The [ATTACH] and [DETACH] statements also cause -** sqlite3_stmt_readonly() to return true since, while those statements -** change the configuration of a database connection, they do not make -** changes to the content of the database files on disk. -*/ -int sqlite3_stmt_readonly(sqlite3_stmt *pStmt); - -/* -** CAPI3REF: Dynamically Typed Value Object -** KEYWORDS: {protected sqlite3_value} {unprotected sqlite3_value} -** -** SQLite uses the sqlite3_value object to represent all values -** that can be stored in a database table. SQLite uses dynamic typing -** for the values it stores. ^Values stored in sqlite3_value objects -** can be integers, floating point values, strings, BLOBs, or NULL. -** -** An sqlite3_value object may be either "protected" or "unprotected". -** Some interfaces require a protected sqlite3_value. Other interfaces -** will accept either a protected or an unprotected sqlite3_value. -** Every interface that accepts sqlite3_value arguments specifies -** whether or not it requires a protected sqlite3_value. -** -** The terms "protected" and "unprotected" refer to whether or not -** a mutex is held. An internal mutex is held for a protected -** sqlite3_value object but no mutex is held for an unprotected -** sqlite3_value object. If SQLite is compiled to be single-threaded -** (with [SQLITE_THREADSAFE=0] and with [sqlite3_threadsafe()] returning 0) -** or if SQLite is run in one of reduced mutex modes -** [SQLITE_CONFIG_SINGLETHREAD] or [SQLITE_CONFIG_MULTITHREAD] -** then there is no distinction between protected and unprotected -** sqlite3_value objects and they can be used interchangeably. However, -** for maximum code portability it is recommended that applications -** still make the distinction between protected and unprotected -** sqlite3_value objects even when not strictly required. -** -** ^The sqlite3_value objects that are passed as parameters into the -** implementation of [application-defined SQL functions] are protected. -** ^The sqlite3_value object returned by -** [sqlite3_column_value()] is unprotected. -** Unprotected sqlite3_value objects may only be used with -** [sqlite3_result_value()] and [sqlite3_bind_value()]. -** The [sqlite3_value_blob | sqlite3_value_type()] family of -** interfaces require protected sqlite3_value objects. -*/ -typedef struct Mem sqlite3_value; - -/* -** CAPI3REF: SQL Function Context Object -** -** The context in which an SQL function executes is stored in an -** sqlite3_context object. ^A pointer to an sqlite3_context object -** is always first parameter to [application-defined SQL functions]. -** The application-defined SQL function implementation will pass this -** pointer through into calls to [sqlite3_result_int | sqlite3_result()], -** [sqlite3_aggregate_context()], [sqlite3_user_data()], -** [sqlite3_context_db_handle()], [sqlite3_get_auxdata()], -** and/or [sqlite3_set_auxdata()]. -*/ -typedef struct sqlite3_context sqlite3_context; - -/* -** CAPI3REF: Binding Values To Prepared Statements -** KEYWORDS: {host parameter} {host parameters} {host parameter name} -** KEYWORDS: {SQL parameter} {SQL parameters} {parameter binding} -** -** ^(In the SQL statement text input to [sqlite3_prepare_v2()] and its variants, -** literals may be replaced by a [parameter] that matches one of following -** templates: -** -**
      -**
    • ? -**
    • ?NNN -**
    • :VVV -**
    • @VVV -**
    • $VVV -**
    -** -** In the templates above, NNN represents an integer literal, -** and VVV represents an alphanumeric identifier.)^ ^The values of these -** parameters (also called "host parameter names" or "SQL parameters") -** can be set using the sqlite3_bind_*() routines defined here. -** -** ^The first argument to the sqlite3_bind_*() routines is always -** a pointer to the [sqlite3_stmt] object returned from -** [sqlite3_prepare_v2()] or its variants. -** -** ^The second argument is the index of the SQL parameter to be set. -** ^The leftmost SQL parameter has an index of 1. ^When the same named -** SQL parameter is used more than once, second and subsequent -** occurrences have the same index as the first occurrence. -** ^The index for named parameters can be looked up using the -** [sqlite3_bind_parameter_index()] API if desired. ^The index -** for "?NNN" parameters is the value of NNN. -** ^The NNN value must be between 1 and the [sqlite3_limit()] -** parameter [SQLITE_LIMIT_VARIABLE_NUMBER] (default value: 999). -** -** ^The third argument is the value to bind to the parameter. -** -** ^(In those routines that have a fourth argument, its value is the -** number of bytes in the parameter. To be clear: the value is the -** number of bytes in the value, not the number of characters.)^ -** ^If the fourth parameter is negative, the length of the string is -** the number of bytes up to the first zero terminator. -** If a non-negative fourth parameter is provided to sqlite3_bind_text() -** or sqlite3_bind_text16() then that parameter must be the byte offset -** where the NUL terminator would occur assuming the string were NUL -** terminated. If any NUL characters occur at byte offsets less than -** the value of the fourth parameter then the resulting string value will -** contain embedded NULs. The result of expressions involving strings -** with embedded NULs is undefined. -** -** ^The fifth argument to sqlite3_bind_blob(), sqlite3_bind_text(), and -** sqlite3_bind_text16() is a destructor used to dispose of the BLOB or -** string after SQLite has finished with it. ^The destructor is called -** to dispose of the BLOB or string even if the call to sqlite3_bind_blob(), -** sqlite3_bind_text(), or sqlite3_bind_text16() fails. -** ^If the fifth argument is -** the special value [SQLITE_STATIC], then SQLite assumes that the -** information is in static, unmanaged space and does not need to be freed. -** ^If the fifth argument has the value [SQLITE_TRANSIENT], then -** SQLite makes its own private copy of the data immediately, before -** the sqlite3_bind_*() routine returns. -** -** ^The sqlite3_bind_zeroblob() routine binds a BLOB of length N that -** is filled with zeroes. ^A zeroblob uses a fixed amount of memory -** (just an integer to hold its size) while it is being processed. -** Zeroblobs are intended to serve as placeholders for BLOBs whose -** content is later written using -** [sqlite3_blob_open | incremental BLOB I/O] routines. -** ^A negative value for the zeroblob results in a zero-length BLOB. -** -** ^If any of the sqlite3_bind_*() routines are called with a NULL pointer -** for the [prepared statement] or with a prepared statement for which -** [sqlite3_step()] has been called more recently than [sqlite3_reset()], -** then the call will return [SQLITE_MISUSE]. If any sqlite3_bind_() -** routine is passed a [prepared statement] that has been finalized, the -** result is undefined and probably harmful. -** -** ^Bindings are not cleared by the [sqlite3_reset()] routine. -** ^Unbound parameters are interpreted as NULL. -** -** ^The sqlite3_bind_* routines return [SQLITE_OK] on success or an -** [error code] if anything goes wrong. -** ^[SQLITE_RANGE] is returned if the parameter -** index is out of range. ^[SQLITE_NOMEM] is returned if malloc() fails. -** -** See also: [sqlite3_bind_parameter_count()], -** [sqlite3_bind_parameter_name()], and [sqlite3_bind_parameter_index()]. -*/ -int sqlite3_bind_blob(sqlite3_stmt*, int, const void*, int n, void(*)(void*)); -int sqlite3_bind_double(sqlite3_stmt*, int, double); -int sqlite3_bind_int(sqlite3_stmt*, int, int); -int sqlite3_bind_int64(sqlite3_stmt*, int, sqlite3_int64); -int sqlite3_bind_null(sqlite3_stmt*, int); -int sqlite3_bind_text(sqlite3_stmt*, int, const char*, int n, void(*)(void*)); -int sqlite3_bind_text16(sqlite3_stmt*, int, const void*, int, void(*)(void*)); -int sqlite3_bind_value(sqlite3_stmt*, int, const sqlite3_value*); -int sqlite3_bind_zeroblob(sqlite3_stmt*, int, int n); - -/* -** CAPI3REF: Number Of SQL Parameters -** -** ^This routine can be used to find the number of [SQL parameters] -** in a [prepared statement]. SQL parameters are tokens of the -** form "?", "?NNN", ":AAA", "$AAA", or "@AAA" that serve as -** placeholders for values that are [sqlite3_bind_blob | bound] -** to the parameters at a later time. -** -** ^(This routine actually returns the index of the largest (rightmost) -** parameter. For all forms except ?NNN, this will correspond to the -** number of unique parameters. If parameters of the ?NNN form are used, -** there may be gaps in the list.)^ -** -** See also: [sqlite3_bind_blob|sqlite3_bind()], -** [sqlite3_bind_parameter_name()], and -** [sqlite3_bind_parameter_index()]. -*/ -int sqlite3_bind_parameter_count(sqlite3_stmt*); - -/* -** CAPI3REF: Name Of A Host Parameter -** -** ^The sqlite3_bind_parameter_name(P,N) interface returns -** the name of the N-th [SQL parameter] in the [prepared statement] P. -** ^(SQL parameters of the form "?NNN" or ":AAA" or "@AAA" or "$AAA" -** have a name which is the string "?NNN" or ":AAA" or "@AAA" or "$AAA" -** respectively. -** In other words, the initial ":" or "$" or "@" or "?" -** is included as part of the name.)^ -** ^Parameters of the form "?" without a following integer have no name -** and are referred to as "nameless" or "anonymous parameters". -** -** ^The first host parameter has an index of 1, not 0. -** -** ^If the value N is out of range or if the N-th parameter is -** nameless, then NULL is returned. ^The returned string is -** always in UTF-8 encoding even if the named parameter was -** originally specified as UTF-16 in [sqlite3_prepare16()] or -** [sqlite3_prepare16_v2()]. -** -** See also: [sqlite3_bind_blob|sqlite3_bind()], -** [sqlite3_bind_parameter_count()], and -** [sqlite3_bind_parameter_index()]. -*/ -const char *sqlite3_bind_parameter_name(sqlite3_stmt*, int); - -/* -** CAPI3REF: Index Of A Parameter With A Given Name -** -** ^Return the index of an SQL parameter given its name. ^The -** index value returned is suitable for use as the second -** parameter to [sqlite3_bind_blob|sqlite3_bind()]. ^A zero -** is returned if no matching parameter is found. ^The parameter -** name must be given in UTF-8 even if the original statement -** was prepared from UTF-16 text using [sqlite3_prepare16_v2()]. -** -** See also: [sqlite3_bind_blob|sqlite3_bind()], -** [sqlite3_bind_parameter_count()], and -** [sqlite3_bind_parameter_index()]. -*/ -int sqlite3_bind_parameter_index(sqlite3_stmt*, const char *zName); - -/* -** CAPI3REF: Reset All Bindings On A Prepared Statement -** -** ^Contrary to the intuition of many, [sqlite3_reset()] does not reset -** the [sqlite3_bind_blob | bindings] on a [prepared statement]. -** ^Use this routine to reset all host parameters to NULL. -*/ -int sqlite3_clear_bindings(sqlite3_stmt*); - -/* -** CAPI3REF: Number Of Columns In A Result Set -** -** ^Return the number of columns in the result set returned by the -** [prepared statement]. ^This routine returns 0 if pStmt is an SQL -** statement that does not return data (for example an [UPDATE]). -** -** See also: [sqlite3_data_count()] -*/ -int sqlite3_column_count(sqlite3_stmt *pStmt); - -/* -** CAPI3REF: Column Names In A Result Set -** -** ^These routines return the name assigned to a particular column -** in the result set of a [SELECT] statement. ^The sqlite3_column_name() -** interface returns a pointer to a zero-terminated UTF-8 string -** and sqlite3_column_name16() returns a pointer to a zero-terminated -** UTF-16 string. ^The first parameter is the [prepared statement] -** that implements the [SELECT] statement. ^The second parameter is the -** column number. ^The leftmost column is number 0. -** -** ^The returned string pointer is valid until either the [prepared statement] -** is destroyed by [sqlite3_finalize()] or until the statement is automatically -** reprepared by the first call to [sqlite3_step()] for a particular run -** or until the next call to -** sqlite3_column_name() or sqlite3_column_name16() on the same column. -** -** ^If sqlite3_malloc() fails during the processing of either routine -** (for example during a conversion from UTF-8 to UTF-16) then a -** NULL pointer is returned. -** -** ^The name of a result column is the value of the "AS" clause for -** that column, if there is an AS clause. If there is no AS clause -** then the name of the column is unspecified and may change from -** one release of SQLite to the next. -*/ -const char *sqlite3_column_name(sqlite3_stmt*, int N); -const void *sqlite3_column_name16(sqlite3_stmt*, int N); - -/* -** CAPI3REF: Source Of Data In A Query Result -** -** ^These routines provide a means to determine the database, table, and -** table column that is the origin of a particular result column in -** [SELECT] statement. -** ^The name of the database or table or column can be returned as -** either a UTF-8 or UTF-16 string. ^The _database_ routines return -** the database name, the _table_ routines return the table name, and -** the origin_ routines return the column name. -** ^The returned string is valid until the [prepared statement] is destroyed -** using [sqlite3_finalize()] or until the statement is automatically -** reprepared by the first call to [sqlite3_step()] for a particular run -** or until the same information is requested -** again in a different encoding. -** -** ^The names returned are the original un-aliased names of the -** database, table, and column. -** -** ^The first argument to these interfaces is a [prepared statement]. -** ^These functions return information about the Nth result column returned by -** the statement, where N is the second function argument. -** ^The left-most column is column 0 for these routines. -** -** ^If the Nth column returned by the statement is an expression or -** subquery and is not a column value, then all of these functions return -** NULL. ^These routine might also return NULL if a memory allocation error -** occurs. ^Otherwise, they return the name of the attached database, table, -** or column that query result column was extracted from. -** -** ^As with all other SQLite APIs, those whose names end with "16" return -** UTF-16 encoded strings and the other functions return UTF-8. -** -** ^These APIs are only available if the library was compiled with the -** [SQLITE_ENABLE_COLUMN_METADATA] C-preprocessor symbol. -** -** If two or more threads call one or more of these routines against the same -** prepared statement and column at the same time then the results are -** undefined. -** -** If two or more threads call one or more -** [sqlite3_column_database_name | column metadata interfaces] -** for the same [prepared statement] and result column -** at the same time then the results are undefined. -*/ -const char *sqlite3_column_database_name(sqlite3_stmt*,int); -const void *sqlite3_column_database_name16(sqlite3_stmt*,int); -const char *sqlite3_column_table_name(sqlite3_stmt*,int); -const void *sqlite3_column_table_name16(sqlite3_stmt*,int); -const char *sqlite3_column_origin_name(sqlite3_stmt*,int); -const void *sqlite3_column_origin_name16(sqlite3_stmt*,int); - -/* -** CAPI3REF: Declared Datatype Of A Query Result -** -** ^(The first parameter is a [prepared statement]. -** If this statement is a [SELECT] statement and the Nth column of the -** returned result set of that [SELECT] is a table column (not an -** expression or subquery) then the declared type of the table -** column is returned.)^ ^If the Nth column of the result set is an -** expression or subquery, then a NULL pointer is returned. -** ^The returned string is always UTF-8 encoded. -** -** ^(For example, given the database schema: -** -** CREATE TABLE t1(c1 VARIANT); -** -** and the following statement to be compiled: -** -** SELECT c1 + 1, c1 FROM t1; -** -** this routine would return the string "VARIANT" for the second result -** column (i==1), and a NULL pointer for the first result column (i==0).)^ -** -** ^SQLite uses dynamic run-time typing. ^So just because a column -** is declared to contain a particular type does not mean that the -** data stored in that column is of the declared type. SQLite is -** strongly typed, but the typing is dynamic not static. ^Type -** is associated with individual values, not with the containers -** used to hold those values. -*/ -const char *sqlite3_column_decltype(sqlite3_stmt*,int); -const void *sqlite3_column_decltype16(sqlite3_stmt*,int); - -/* -** CAPI3REF: Evaluate An SQL Statement -** -** After a [prepared statement] has been prepared using either -** [sqlite3_prepare_v2()] or [sqlite3_prepare16_v2()] or one of the legacy -** interfaces [sqlite3_prepare()] or [sqlite3_prepare16()], this function -** must be called one or more times to evaluate the statement. -** -** The details of the behavior of the sqlite3_step() interface depend -** on whether the statement was prepared using the newer "v2" interface -** [sqlite3_prepare_v2()] and [sqlite3_prepare16_v2()] or the older legacy -** interface [sqlite3_prepare()] and [sqlite3_prepare16()]. The use of the -** new "v2" interface is recommended for new applications but the legacy -** interface will continue to be supported. -** -** ^In the legacy interface, the return value will be either [SQLITE_BUSY], -** [SQLITE_DONE], [SQLITE_ROW], [SQLITE_ERROR], or [SQLITE_MISUSE]. -** ^With the "v2" interface, any of the other [result codes] or -** [extended result codes] might be returned as well. -** -** ^[SQLITE_BUSY] means that the database engine was unable to acquire the -** database locks it needs to do its job. ^If the statement is a [COMMIT] -** or occurs outside of an explicit transaction, then you can retry the -** statement. If the statement is not a [COMMIT] and occurs within an -** explicit transaction then you should rollback the transaction before -** continuing. -** -** ^[SQLITE_DONE] means that the statement has finished executing -** successfully. sqlite3_step() should not be called again on this virtual -** machine without first calling [sqlite3_reset()] to reset the virtual -** machine back to its initial state. -** -** ^If the SQL statement being executed returns any data, then [SQLITE_ROW] -** is returned each time a new row of data is ready for processing by the -** caller. The values may be accessed using the [column access functions]. -** sqlite3_step() is called again to retrieve the next row of data. -** -** ^[SQLITE_ERROR] means that a run-time error (such as a constraint -** violation) has occurred. sqlite3_step() should not be called again on -** the VM. More information may be found by calling [sqlite3_errmsg()]. -** ^With the legacy interface, a more specific error code (for example, -** [SQLITE_INTERRUPT], [SQLITE_SCHEMA], [SQLITE_CORRUPT], and so forth) -** can be obtained by calling [sqlite3_reset()] on the -** [prepared statement]. ^In the "v2" interface, -** the more specific error code is returned directly by sqlite3_step(). -** -** [SQLITE_MISUSE] means that the this routine was called inappropriately. -** Perhaps it was called on a [prepared statement] that has -** already been [sqlite3_finalize | finalized] or on one that had -** previously returned [SQLITE_ERROR] or [SQLITE_DONE]. Or it could -** be the case that the same database connection is being used by two or -** more threads at the same moment in time. -** -** For all versions of SQLite up to and including 3.6.23.1, a call to -** [sqlite3_reset()] was required after sqlite3_step() returned anything -** other than [SQLITE_ROW] before any subsequent invocation of -** sqlite3_step(). Failure to reset the prepared statement using -** [sqlite3_reset()] would result in an [SQLITE_MISUSE] return from -** sqlite3_step(). But after version 3.6.23.1, sqlite3_step() began -** calling [sqlite3_reset()] automatically in this circumstance rather -** than returning [SQLITE_MISUSE]. This is not considered a compatibility -** break because any application that ever receives an SQLITE_MISUSE error -** is broken by definition. The [SQLITE_OMIT_AUTORESET] compile-time option -** can be used to restore the legacy behavior. -** -** Goofy Interface Alert: In the legacy interface, the sqlite3_step() -** API always returns a generic error code, [SQLITE_ERROR], following any -** error other than [SQLITE_BUSY] and [SQLITE_MISUSE]. You must call -** [sqlite3_reset()] or [sqlite3_finalize()] in order to find one of the -** specific [error codes] that better describes the error. -** We admit that this is a goofy design. The problem has been fixed -** with the "v2" interface. If you prepare all of your SQL statements -** using either [sqlite3_prepare_v2()] or [sqlite3_prepare16_v2()] instead -** of the legacy [sqlite3_prepare()] and [sqlite3_prepare16()] interfaces, -** then the more specific [error codes] are returned directly -** by sqlite3_step(). The use of the "v2" interface is recommended. -*/ -int sqlite3_step(sqlite3_stmt*); - -/* -** CAPI3REF: Number of columns in a result set -** -** ^The sqlite3_data_count(P) interface returns the number of columns in the -** current row of the result set of [prepared statement] P. -** ^If prepared statement P does not have results ready to return -** (via calls to the [sqlite3_column_int | sqlite3_column_*()] of -** interfaces) then sqlite3_data_count(P) returns 0. -** ^The sqlite3_data_count(P) routine also returns 0 if P is a NULL pointer. -** ^The sqlite3_data_count(P) routine returns 0 if the previous call to -** [sqlite3_step](P) returned [SQLITE_DONE]. ^The sqlite3_data_count(P) -** will return non-zero if previous call to [sqlite3_step](P) returned -** [SQLITE_ROW], except in the case of the [PRAGMA incremental_vacuum] -** where it always returns zero since each step of that multi-step -** pragma returns 0 columns of data. -** -** See also: [sqlite3_column_count()] -*/ -int sqlite3_data_count(sqlite3_stmt *pStmt); - -/* -** CAPI3REF: Fundamental Datatypes -** KEYWORDS: SQLITE_TEXT -** -** ^(Every value in SQLite has one of five fundamental datatypes: -** -**
      -**
    • 64-bit signed integer -**
    • 64-bit IEEE floating point number -**
    • string -**
    • BLOB -**
    • NULL -**
    )^ -** -** These constants are codes for each of those types. -** -** Note that the SQLITE_TEXT constant was also used in SQLite version 2 -** for a completely different meaning. Software that links against both -** SQLite version 2 and SQLite version 3 should use SQLITE3_TEXT, not -** SQLITE_TEXT. -*/ -#define SQLITE_INTEGER 1 -#define SQLITE_FLOAT 2 -#define SQLITE_BLOB 4 -#define SQLITE_NULL 5 -#ifdef SQLITE_TEXT -# undef SQLITE_TEXT -#else -# define SQLITE_TEXT 3 -#endif -#define SQLITE3_TEXT 3 - -/* -** CAPI3REF: Result Values From A Query -** KEYWORDS: {column access functions} -** -** These routines form the "result set" interface. -** -** ^These routines return information about a single column of the current -** result row of a query. ^In every case the first argument is a pointer -** to the [prepared statement] that is being evaluated (the [sqlite3_stmt*] -** that was returned from [sqlite3_prepare_v2()] or one of its variants) -** and the second argument is the index of the column for which information -** should be returned. ^The leftmost column of the result set has the index 0. -** ^The number of columns in the result can be determined using -** [sqlite3_column_count()]. -** -** If the SQL statement does not currently point to a valid row, or if the -** column index is out of range, the result is undefined. -** These routines may only be called when the most recent call to -** [sqlite3_step()] has returned [SQLITE_ROW] and neither -** [sqlite3_reset()] nor [sqlite3_finalize()] have been called subsequently. -** If any of these routines are called after [sqlite3_reset()] or -** [sqlite3_finalize()] or after [sqlite3_step()] has returned -** something other than [SQLITE_ROW], the results are undefined. -** If [sqlite3_step()] or [sqlite3_reset()] or [sqlite3_finalize()] -** are called from a different thread while any of these routines -** are pending, then the results are undefined. -** -** ^The sqlite3_column_type() routine returns the -** [SQLITE_INTEGER | datatype code] for the initial data type -** of the result column. ^The returned value is one of [SQLITE_INTEGER], -** [SQLITE_FLOAT], [SQLITE_TEXT], [SQLITE_BLOB], or [SQLITE_NULL]. The value -** returned by sqlite3_column_type() is only meaningful if no type -** conversions have occurred as described below. After a type conversion, -** the value returned by sqlite3_column_type() is undefined. Future -** versions of SQLite may change the behavior of sqlite3_column_type() -** following a type conversion. -** -** ^If the result is a BLOB or UTF-8 string then the sqlite3_column_bytes() -** routine returns the number of bytes in that BLOB or string. -** ^If the result is a UTF-16 string, then sqlite3_column_bytes() converts -** the string to UTF-8 and then returns the number of bytes. -** ^If the result is a numeric value then sqlite3_column_bytes() uses -** [sqlite3_snprintf()] to convert that value to a UTF-8 string and returns -** the number of bytes in that string. -** ^If the result is NULL, then sqlite3_column_bytes() returns zero. -** -** ^If the result is a BLOB or UTF-16 string then the sqlite3_column_bytes16() -** routine returns the number of bytes in that BLOB or string. -** ^If the result is a UTF-8 string, then sqlite3_column_bytes16() converts -** the string to UTF-16 and then returns the number of bytes. -** ^If the result is a numeric value then sqlite3_column_bytes16() uses -** [sqlite3_snprintf()] to convert that value to a UTF-16 string and returns -** the number of bytes in that string. -** ^If the result is NULL, then sqlite3_column_bytes16() returns zero. -** -** ^The values returned by [sqlite3_column_bytes()] and -** [sqlite3_column_bytes16()] do not include the zero terminators at the end -** of the string. ^For clarity: the values returned by -** [sqlite3_column_bytes()] and [sqlite3_column_bytes16()] are the number of -** bytes in the string, not the number of characters. -** -** ^Strings returned by sqlite3_column_text() and sqlite3_column_text16(), -** even empty strings, are always zero terminated. ^The return -** value from sqlite3_column_blob() for a zero-length BLOB is a NULL pointer. -** -** ^The object returned by [sqlite3_column_value()] is an -** [unprotected sqlite3_value] object. An unprotected sqlite3_value object -** may only be used with [sqlite3_bind_value()] and [sqlite3_result_value()]. -** If the [unprotected sqlite3_value] object returned by -** [sqlite3_column_value()] is used in any other way, including calls -** to routines like [sqlite3_value_int()], [sqlite3_value_text()], -** or [sqlite3_value_bytes()], then the behavior is undefined. -** -** These routines attempt to convert the value where appropriate. ^For -** example, if the internal representation is FLOAT and a text result -** is requested, [sqlite3_snprintf()] is used internally to perform the -** conversion automatically. ^(The following table details the conversions -** that are applied: -** -**
    -** -**
    Internal
    Type     		Requested
    Type     		Conversion -** -**
    NULL INTEGER Result is 0 -**
    NULL FLOAT Result is 0.0 -**
    NULL TEXT Result is NULL pointer -**
    NULL BLOB Result is NULL pointer -**
    INTEGER FLOAT Convert from integer to float -**
    INTEGER TEXT ASCII rendering of the integer -**
    INTEGER BLOB Same as INTEGER->TEXT -**
    FLOAT INTEGER Convert from float to integer -**
    FLOAT TEXT ASCII rendering of the float -**
    FLOAT BLOB Same as FLOAT->TEXT -**
    TEXT INTEGER Use atoi() -**
    TEXT FLOAT Use atof() -**
    TEXT BLOB No change -**
    BLOB INTEGER Convert to TEXT then use atoi() -**
    BLOB FLOAT Convert to TEXT then use atof() -**
    BLOB TEXT Add a zero terminator if needed -**
    -**
    )^ -** -** The table above makes reference to standard C library functions atoi() -** and atof(). SQLite does not really use these functions. It has its -** own equivalent internal routines. The atoi() and atof() names are -** used in the table for brevity and because they are familiar to most -** C programmers. -** -** Note that when type conversions occur, pointers returned by prior -** calls to sqlite3_column_blob(), sqlite3_column_text(), and/or -** sqlite3_column_text16() may be invalidated. -** Type conversions and pointer invalidations might occur -** in the following cases: -** -**
      -**
    • The initial content is a BLOB and sqlite3_column_text() or -** sqlite3_column_text16() is called. A zero-terminator might -** need to be added to the string.
      • -**
    • The initial content is UTF-8 text and sqlite3_column_bytes16() or -** sqlite3_column_text16() is called. The content must be converted -** to UTF-16.
      • -**
    • The initial content is UTF-16 text and sqlite3_column_bytes() or -** sqlite3_column_text() is called. The content must be converted -** to UTF-8.
      • -**
    -** -** ^Conversions between UTF-16be and UTF-16le are always done in place and do -** not invalidate a prior pointer, though of course the content of the buffer -** that the prior pointer references will have been modified. Other kinds -** of conversion are done in place when it is possible, but sometimes they -** are not possible and in those cases prior pointers are invalidated. -** -** The safest and easiest to remember policy is to invoke these routines -** in one of the following ways: -** -**
      -**
    • sqlite3_column_text() followed by sqlite3_column_bytes()
      • -**
    • sqlite3_column_blob() followed by sqlite3_column_bytes()
      • -**
    • sqlite3_column_text16() followed by sqlite3_column_bytes16()
      • -**
    -** -** In other words, you should call sqlite3_column_text(), -** sqlite3_column_blob(), or sqlite3_column_text16() first to force the result -** into the desired format, then invoke sqlite3_column_bytes() or -** sqlite3_column_bytes16() to find the size of the result. Do not mix calls -** to sqlite3_column_text() or sqlite3_column_blob() with calls to -** sqlite3_column_bytes16(), and do not mix calls to sqlite3_column_text16() -** with calls to sqlite3_column_bytes(). -** -** ^The pointers returned are valid until a type conversion occurs as -** described above, or until [sqlite3_step()] or [sqlite3_reset()] or -** [sqlite3_finalize()] is called. ^The memory space used to hold strings -** and BLOBs is freed automatically. Do not pass the pointers returned -** [sqlite3_column_blob()], [sqlite3_column_text()], etc. into -** [sqlite3_free()]. -** -** ^(If a memory allocation error occurs during the evaluation of any -** of these routines, a default value is returned. The default value -** is either the integer 0, the floating point number 0.0, or a NULL -** pointer. Subsequent calls to [sqlite3_errcode()] will return -** [SQLITE_NOMEM].)^ -*/ -const void *sqlite3_column_blob(sqlite3_stmt*, int iCol); -int sqlite3_column_bytes(sqlite3_stmt*, int iCol); -int sqlite3_column_bytes16(sqlite3_stmt*, int iCol); -double sqlite3_column_double(sqlite3_stmt*, int iCol); -int sqlite3_column_int(sqlite3_stmt*, int iCol); -sqlite3_int64 sqlite3_column_int64(sqlite3_stmt*, int iCol); -const unsigned char *sqlite3_column_text(sqlite3_stmt*, int iCol); -const void *sqlite3_column_text16(sqlite3_stmt*, int iCol); -int sqlite3_column_type(sqlite3_stmt*, int iCol); -sqlite3_value *sqlite3_column_value(sqlite3_stmt*, int iCol); - -/* -** CAPI3REF: Destroy A Prepared Statement Object -** -** ^The sqlite3_finalize() function is called to delete a [prepared statement]. -** ^If the most recent evaluation of the statement encountered no errors -** or if the statement is never been evaluated, then sqlite3_finalize() returns -** SQLITE_OK. ^If the most recent evaluation of statement S failed, then -** sqlite3_finalize(S) returns the appropriate [error code] or -** [extended error code]. -** -** ^The sqlite3_finalize(S) routine can be called at any point during -** the life cycle of [prepared statement] S: -** before statement S is ever evaluated, after -** one or more calls to [sqlite3_reset()], or after any call -** to [sqlite3_step()] regardless of whether or not the statement has -** completed execution. -** -** ^Invoking sqlite3_finalize() on a NULL pointer is a harmless no-op. -** -** The application must finalize every [prepared statement] in order to avoid -** resource leaks. It is a grievous error for the application to try to use -** a prepared statement after it has been finalized. Any use of a prepared -** statement after it has been finalized can result in undefined and -** undesirable behavior such as segfaults and heap corruption. -*/ -int sqlite3_finalize(sqlite3_stmt *pStmt); - -/* -** CAPI3REF: Reset A Prepared Statement Object -** -** The sqlite3_reset() function is called to reset a [prepared statement] -** object back to its initial state, ready to be re-executed. -** ^Any SQL statement variables that had values bound to them using -** the [sqlite3_bind_blob | sqlite3_bind_*() API] retain their values. -** Use [sqlite3_clear_bindings()] to reset the bindings. -** -** ^The [sqlite3_reset(S)] interface resets the [prepared statement] S -** back to the beginning of its program. -** -** ^If the most recent call to [sqlite3_step(S)] for the -** [prepared statement] S returned [SQLITE_ROW] or [SQLITE_DONE], -** or if [sqlite3_step(S)] has never before been called on S, -** then [sqlite3_reset(S)] returns [SQLITE_OK]. -** -** ^If the most recent call to [sqlite3_step(S)] for the -** [prepared statement] S indicated an error, then -** [sqlite3_reset(S)] returns an appropriate [error code]. -** -** ^The [sqlite3_reset(S)] interface does not change the values -** of any [sqlite3_bind_blob|bindings] on the [prepared statement] S. -*/ -int sqlite3_reset(sqlite3_stmt *pStmt); - -/* -** CAPI3REF: Create Or Redefine SQL Functions -** KEYWORDS: {function creation routines} -** KEYWORDS: {application-defined SQL function} -** KEYWORDS: {application-defined SQL functions} -** -** ^These functions (collectively known as "function creation routines") -** are used to add SQL functions or aggregates or to redefine the behavior -** of existing SQL functions or aggregates. The only differences between -** these routines are the text encoding expected for -** the second parameter (the name of the function being created) -** and the presence or absence of a destructor callback for -** the application data pointer. -** -** ^The first parameter is the [database connection] to which the SQL -** function is to be added. ^If an application uses more than one database -** connection then application-defined SQL functions must be added -** to each database connection separately. -** -** ^The second parameter is the name of the SQL function to be created or -** redefined. ^The length of the name is limited to 255 bytes in a UTF-8 -** representation, exclusive of the zero-terminator. ^Note that the name -** length limit is in UTF-8 bytes, not characters nor UTF-16 bytes. -** ^Any attempt to create a function with a longer name -** will result in [SQLITE_MISUSE] being returned. -** -** ^The third parameter (nArg) -** is the number of arguments that the SQL function or -** aggregate takes. ^If this parameter is -1, then the SQL function or -** aggregate may take any number of arguments between 0 and the limit -** set by [sqlite3_limit]([SQLITE_LIMIT_FUNCTION_ARG]). If the third -** parameter is less than -1 or greater than 127 then the behavior is -** undefined. -** -** ^The fourth parameter, eTextRep, specifies what -** [SQLITE_UTF8 | text encoding] this SQL function prefers for -** its parameters. Every SQL function implementation must be able to work -** with UTF-8, UTF-16le, or UTF-16be. But some implementations may be -** more efficient with one encoding than another. ^An application may -** invoke sqlite3_create_function() or sqlite3_create_function16() multiple -** times with the same function but with different values of eTextRep. -** ^When multiple implementations of the same function are available, SQLite -** will pick the one that involves the least amount of data conversion. -** If there is only a single implementation which does not care what text -** encoding is used, then the fourth argument should be [SQLITE_ANY]. -** -** ^(The fifth parameter is an arbitrary pointer. The implementation of the -** function can gain access to this pointer using [sqlite3_user_data()].)^ -** -** ^The sixth, seventh and eighth parameters, xFunc, xStep and xFinal, are -** pointers to C-language functions that implement the SQL function or -** aggregate. ^A scalar SQL function requires an implementation of the xFunc -** callback only; NULL pointers must be passed as the xStep and xFinal -** parameters. ^An aggregate SQL function requires an implementation of xStep -** and xFinal and NULL pointer must be passed for xFunc. ^To delete an existing -** SQL function or aggregate, pass NULL pointers for all three function -** callbacks. -** -** ^(If the ninth parameter to sqlite3_create_function_v2() is not NULL, -** then it is destructor for the application data pointer. -** The destructor is invoked when the function is deleted, either by being -** overloaded or when the database connection closes.)^ -** ^The destructor is also invoked if the call to -** sqlite3_create_function_v2() fails. -** ^When the destructor callback of the tenth parameter is invoked, it -** is passed a single argument which is a copy of the application data -** pointer which was the fifth parameter to sqlite3_create_function_v2(). -** -** ^It is permitted to register multiple implementations of the same -** functions with the same name but with either differing numbers of -** arguments or differing preferred text encodings. ^SQLite will use -** the implementation that most closely matches the way in which the -** SQL function is used. ^A function implementation with a non-negative -** nArg parameter is a better match than a function implementation with -** a negative nArg. ^A function where the preferred text encoding -** matches the database encoding is a better -** match than a function where the encoding is different. -** ^A function where the encoding difference is between UTF16le and UTF16be -** is a closer match than a function where the encoding difference is -** between UTF8 and UTF16. -** -** ^Built-in functions may be overloaded by new application-defined functions. -** -** ^An application-defined function is permitted to call other -** SQLite interfaces. However, such calls must not -** close the database connection nor finalize or reset the prepared -** statement in which the function is running. -*/ -int sqlite3_create_function( - sqlite3 *db, - const char *zFunctionName, - int nArg, - int eTextRep, - void *pApp, - void (*xFunc)(sqlite3_context*,int,sqlite3_value**), - void (*xStep)(sqlite3_context*,int,sqlite3_value**), - void (*xFinal)(sqlite3_context*) -); -int sqlite3_create_function16( - sqlite3 *db, - const void *zFunctionName, - int nArg, - int eTextRep, - void *pApp, - void (*xFunc)(sqlite3_context*,int,sqlite3_value**), - void (*xStep)(sqlite3_context*,int,sqlite3_value**), - void (*xFinal)(sqlite3_context*) -); -int sqlite3_create_function_v2( - sqlite3 *db, - const char *zFunctionName, - int nArg, - int eTextRep, - void *pApp, - void (*xFunc)(sqlite3_context*,int,sqlite3_value**), - void (*xStep)(sqlite3_context*,int,sqlite3_value**), - void (*xFinal)(sqlite3_context*), - void(*xDestroy)(void*) -); - -/* -** CAPI3REF: Text Encodings -** -** These constant define integer codes that represent the various -** text encodings supported by SQLite. -*/ -#define SQLITE_UTF8 1 -#define SQLITE_UTF16LE 2 -#define SQLITE_UTF16BE 3 -#define SQLITE_UTF16 4 /* Use native byte order */ -#define SQLITE_ANY 5 /* sqlite3_create_function only */ -#define SQLITE_UTF16_ALIGNED 8 /* sqlite3_create_collation only */ - -/* -** CAPI3REF: Deprecated Functions -** DEPRECATED -** -** These functions are [deprecated]. In order to maintain -** backwards compatibility with older code, these functions continue -** to be supported. However, new applications should avoid -** the use of these functions. To help encourage people to avoid -** using these functions, we are not going to tell you what they do. -*/ -#ifndef SQLITE_OMIT_DEPRECATED -SQLITE_DEPRECATED int sqlite3_aggregate_count(sqlite3_context*); -SQLITE_DEPRECATED int sqlite3_expired(sqlite3_stmt*); -SQLITE_DEPRECATED int sqlite3_transfer_bindings(sqlite3_stmt*, sqlite3_stmt*); -SQLITE_DEPRECATED int sqlite3_global_recover(void); -SQLITE_DEPRECATED void sqlite3_thread_cleanup(void); -SQLITE_DEPRECATED int sqlite3_memory_alarm(void(*)(void*,sqlite3_int64,int),void*,sqlite3_int64); -#endif - -/* -** CAPI3REF: Obtaining SQL Function Parameter Values -** -** The C-language implementation of SQL functions and aggregates uses -** this set of interface routines to access the parameter values on -** the function or aggregate. -** -** The xFunc (for scalar functions) or xStep (for aggregates) parameters -** to [sqlite3_create_function()] and [sqlite3_create_function16()] -** define callbacks that implement the SQL functions and aggregates. -** The 3rd parameter to these callbacks is an array of pointers to -** [protected sqlite3_value] objects. There is one [sqlite3_value] object for -** each parameter to the SQL function. These routines are used to -** extract values from the [sqlite3_value] objects. -** -** These routines work only with [protected sqlite3_value] objects. -** Any attempt to use these routines on an [unprotected sqlite3_value] -** object results in undefined behavior. -** -** ^These routines work just like the corresponding [column access functions] -** except that these routines take a single [protected sqlite3_value] object -** pointer instead of a [sqlite3_stmt*] pointer and an integer column number. -** -** ^The sqlite3_value_text16() interface extracts a UTF-16 string -** in the native byte-order of the host machine. ^The -** sqlite3_value_text16be() and sqlite3_value_text16le() interfaces -** extract UTF-16 strings as big-endian and little-endian respectively. -** -** ^(The sqlite3_value_numeric_type() interface attempts to apply -** numeric affinity to the value. This means that an attempt is -** made to convert the value to an integer or floating point. If -** such a conversion is possible without loss of information (in other -** words, if the value is a string that looks like a number) -** then the conversion is performed. Otherwise no conversion occurs. -** The [SQLITE_INTEGER | datatype] after conversion is returned.)^ -** -** Please pay particular attention to the fact that the pointer returned -** from [sqlite3_value_blob()], [sqlite3_value_text()], or -** [sqlite3_value_text16()] can be invalidated by a subsequent call to -** [sqlite3_value_bytes()], [sqlite3_value_bytes16()], [sqlite3_value_text()], -** or [sqlite3_value_text16()]. -** -** These routines must be called from the same thread as -** the SQL function that supplied the [sqlite3_value*] parameters. -*/ -const void *sqlite3_value_blob(sqlite3_value*); -int sqlite3_value_bytes(sqlite3_value*); -int sqlite3_value_bytes16(sqlite3_value*); -double sqlite3_value_double(sqlite3_value*); -int sqlite3_value_int(sqlite3_value*); -sqlite3_int64 sqlite3_value_int64(sqlite3_value*); -const unsigned char *sqlite3_value_text(sqlite3_value*); -const void *sqlite3_value_text16(sqlite3_value*); -const void *sqlite3_value_text16le(sqlite3_value*); -const void *sqlite3_value_text16be(sqlite3_value*); -int sqlite3_value_type(sqlite3_value*); -int sqlite3_value_numeric_type(sqlite3_value*); - -/* -** CAPI3REF: Obtain Aggregate Function Context -** -** Implementations of aggregate SQL functions use this -** routine to allocate memory for storing their state. -** -** ^The first time the sqlite3_aggregate_context(C,N) routine is called -** for a particular aggregate function, SQLite -** allocates N of memory, zeroes out that memory, and returns a pointer -** to the new memory. ^On second and subsequent calls to -** sqlite3_aggregate_context() for the same aggregate function instance, -** the same buffer is returned. Sqlite3_aggregate_context() is normally -** called once for each invocation of the xStep callback and then one -** last time when the xFinal callback is invoked. ^(When no rows match -** an aggregate query, the xStep() callback of the aggregate function -** implementation is never called and xFinal() is called exactly once. -** In those cases, sqlite3_aggregate_context() might be called for the -** first time from within xFinal().)^ -** -** ^The sqlite3_aggregate_context(C,N) routine returns a NULL pointer if N is -** less than or equal to zero or if a memory allocate error occurs. -** -** ^(The amount of space allocated by sqlite3_aggregate_context(C,N) is -** determined by the N parameter on first successful call. Changing the -** value of N in subsequent call to sqlite3_aggregate_context() within -** the same aggregate function instance will not resize the memory -** allocation.)^ -** -** ^SQLite automatically frees the memory allocated by -** sqlite3_aggregate_context() when the aggregate query concludes. -** -** The first parameter must be a copy of the -** [sqlite3_context | SQL function context] that is the first parameter -** to the xStep or xFinal callback routine that implements the aggregate -** function. -** -** This routine must be called from the same thread in which -** the aggregate SQL function is running. -*/ -void *sqlite3_aggregate_context(sqlite3_context*, int nBytes); - -/* -** CAPI3REF: User Data For Functions -** -** ^The sqlite3_user_data() interface returns a copy of -** the pointer that was the pUserData parameter (the 5th parameter) -** of the [sqlite3_create_function()] -** and [sqlite3_create_function16()] routines that originally -** registered the application defined function. -** -** This routine must be called from the same thread in which -** the application-defined function is running. -*/ -void *sqlite3_user_data(sqlite3_context*); - -/* -** CAPI3REF: Database Connection For Functions -** -** ^The sqlite3_context_db_handle() interface returns a copy of -** the pointer to the [database connection] (the 1st parameter) -** of the [sqlite3_create_function()] -** and [sqlite3_create_function16()] routines that originally -** registered the application defined function. -*/ -sqlite3 *sqlite3_context_db_handle(sqlite3_context*); - -/* -** CAPI3REF: Function Auxiliary Data -** -** The following two functions may be used by scalar SQL functions to -** associate metadata with argument values. If the same value is passed to -** multiple invocations of the same SQL function during query execution, under -** some circumstances the associated metadata may be preserved. This may -** be used, for example, to add a regular-expression matching scalar -** function. The compiled version of the regular expression is stored as -** metadata associated with the SQL value passed as the regular expression -** pattern. The compiled regular expression can be reused on multiple -** invocations of the same function so that the original pattern string -** does not need to be recompiled on each invocation. -** -** ^The sqlite3_get_auxdata() interface returns a pointer to the metadata -** associated by the sqlite3_set_auxdata() function with the Nth argument -** value to the application-defined function. ^If no metadata has been ever -** been set for the Nth argument of the function, or if the corresponding -** function parameter has changed since the meta-data was set, -** then sqlite3_get_auxdata() returns a NULL pointer. -** -** ^The sqlite3_set_auxdata() interface saves the metadata -** pointed to by its 3rd parameter as the metadata for the N-th -** argument of the application-defined function. Subsequent -** calls to sqlite3_get_auxdata() might return this data, if it has -** not been destroyed. -** ^If it is not NULL, SQLite will invoke the destructor -** function given by the 4th parameter to sqlite3_set_auxdata() on -** the metadata when the corresponding function parameter changes -** or when the SQL statement completes, whichever comes first. -** -** SQLite is free to call the destructor and drop metadata on any -** parameter of any function at any time. ^The only guarantee is that -** the destructor will be called before the metadata is dropped. -** -** ^(In practice, metadata is preserved between function calls for -** expressions that are constant at compile time. This includes literal -** values and [parameters].)^ -** -** These routines must be called from the same thread in which -** the SQL function is running. -*/ -void *sqlite3_get_auxdata(sqlite3_context*, int N); -void sqlite3_set_auxdata(sqlite3_context*, int N, void*, void (*)(void*)); - - -/* -** CAPI3REF: Constants Defining Special Destructor Behavior -** -** These are special values for the destructor that is passed in as the -** final argument to routines like [sqlite3_result_blob()]. ^If the destructor -** argument is SQLITE_STATIC, it means that the content pointer is constant -** and will never change. It does not need to be destroyed. ^The -** SQLITE_TRANSIENT value means that the content will likely change in -** the near future and that SQLite should make its own private copy of -** the content before returning. -** -** The typedef is necessary to work around problems in certain -** C++ compilers. See ticket #2191. -*/ -typedef void (*sqlite3_destructor_type)(void*); -#define SQLITE_STATIC ((sqlite3_destructor_type)0) -#define SQLITE_TRANSIENT ((sqlite3_destructor_type)-1) - -/* -** CAPI3REF: Setting The Result Of An SQL Function -** -** These routines are used by the xFunc or xFinal callbacks that -** implement SQL functions and aggregates. See -** [sqlite3_create_function()] and [sqlite3_create_function16()] -** for additional information. -** -** These functions work very much like the [parameter binding] family of -** functions used to bind values to host parameters in prepared statements. -** Refer to the [SQL parameter] documentation for additional information. -** -** ^The sqlite3_result_blob() interface sets the result from -** an application-defined function to be the BLOB whose content is pointed -** to by the second parameter and which is N bytes long where N is the -** third parameter. -** -** ^The sqlite3_result_zeroblob() interfaces set the result of -** the application-defined function to be a BLOB containing all zero -** bytes and N bytes in size, where N is the value of the 2nd parameter. -** -** ^The sqlite3_result_double() interface sets the result from -** an application-defined function to be a floating point value specified -** by its 2nd argument. -** -** ^The sqlite3_result_error() and sqlite3_result_error16() functions -** cause the implemented SQL function to throw an exception. -** ^SQLite uses the string pointed to by the -** 2nd parameter of sqlite3_result_error() or sqlite3_result_error16() -** as the text of an error message. ^SQLite interprets the error -** message string from sqlite3_result_error() as UTF-8. ^SQLite -** interprets the string from sqlite3_result_error16() as UTF-16 in native -** byte order. ^If the third parameter to sqlite3_result_error() -** or sqlite3_result_error16() is negative then SQLite takes as the error -** message all text up through the first zero character. -** ^If the third parameter to sqlite3_result_error() or -** sqlite3_result_error16() is non-negative then SQLite takes that many -** bytes (not characters) from the 2nd parameter as the error message. -** ^The sqlite3_result_error() and sqlite3_result_error16() -** routines make a private copy of the error message text before -** they return. Hence, the calling function can deallocate or -** modify the text after they return without harm. -** ^The sqlite3_result_error_code() function changes the error code -** returned by SQLite as a result of an error in a function. ^By default, -** the error code is SQLITE_ERROR. ^A subsequent call to sqlite3_result_error() -** or sqlite3_result_error16() resets the error code to SQLITE_ERROR. -** -** ^The sqlite3_result_toobig() interface causes SQLite to throw an error -** indicating that a string or BLOB is too long to represent. -** -** ^The sqlite3_result_nomem() interface causes SQLite to throw an error -** indicating that a memory allocation failed. -** -** ^The sqlite3_result_int() interface sets the return value -** of the application-defined function to be the 32-bit signed integer -** value given in the 2nd argument. -** ^The sqlite3_result_int64() interface sets the return value -** of the application-defined function to be the 64-bit signed integer -** value given in the 2nd argument. -** -** ^The sqlite3_result_null() interface sets the return value -** of the application-defined function to be NULL. -** -** ^The sqlite3_result_text(), sqlite3_result_text16(), -** sqlite3_result_text16le(), and sqlite3_result_text16be() interfaces -** set the return value of the application-defined function to be -** a text string which is represented as UTF-8, UTF-16 native byte order, -** UTF-16 little endian, or UTF-16 big endian, respectively. -** ^SQLite takes the text result from the application from -** the 2nd parameter of the sqlite3_result_text* interfaces. -** ^If the 3rd parameter to the sqlite3_result_text* interfaces -** is negative, then SQLite takes result text from the 2nd parameter -** through the first zero character. -** ^If the 3rd parameter to the sqlite3_result_text* interfaces -** is non-negative, then as many bytes (not characters) of the text -** pointed to by the 2nd parameter are taken as the application-defined -** function result. If the 3rd parameter is non-negative, then it -** must be the byte offset into the string where the NUL terminator would -** appear if the string where NUL terminated. If any NUL characters occur -** in the string at a byte offset that is less than the value of the 3rd -** parameter, then the resulting string will contain embedded NULs and the -** result of expressions operating on strings with embedded NULs is undefined. -** ^If the 4th parameter to the sqlite3_result_text* interfaces -** or sqlite3_result_blob is a non-NULL pointer, then SQLite calls that -** function as the destructor on the text or BLOB result when it has -** finished using that result. -** ^If the 4th parameter to the sqlite3_result_text* interfaces or to -** sqlite3_result_blob is the special constant SQLITE_STATIC, then SQLite -** assumes that the text or BLOB result is in constant space and does not -** copy the content of the parameter nor call a destructor on the content -** when it has finished using that result. -** ^If the 4th parameter to the sqlite3_result_text* interfaces -** or sqlite3_result_blob is the special constant SQLITE_TRANSIENT -** then SQLite makes a copy of the result into space obtained from -** from [sqlite3_malloc()] before it returns. -** -** ^The sqlite3_result_value() interface sets the result of -** the application-defined function to be a copy the -** [unprotected sqlite3_value] object specified by the 2nd parameter. ^The -** sqlite3_result_value() interface makes a copy of the [sqlite3_value] -** so that the [sqlite3_value] specified in the parameter may change or -** be deallocated after sqlite3_result_value() returns without harm. -** ^A [protected sqlite3_value] object may always be used where an -** [unprotected sqlite3_value] object is required, so either -** kind of [sqlite3_value] object can be used with this interface. -** -** If these routines are called from within the different thread -** than the one containing the application-defined function that received -** the [sqlite3_context] pointer, the results are undefined. -*/ -void sqlite3_result_blob(sqlite3_context*, const void*, int, void(*)(void*)); -void sqlite3_result_double(sqlite3_context*, double); -void sqlite3_result_error(sqlite3_context*, const char*, int); -void sqlite3_result_error16(sqlite3_context*, const void*, int); -void sqlite3_result_error_toobig(sqlite3_context*); -void sqlite3_result_error_nomem(sqlite3_context*); -void sqlite3_result_error_code(sqlite3_context*, int); -void sqlite3_result_int(sqlite3_context*, int); -void sqlite3_result_int64(sqlite3_context*, sqlite3_int64); -void sqlite3_result_null(sqlite3_context*); -void sqlite3_result_text(sqlite3_context*, const char*, int, void(*)(void*)); -void sqlite3_result_text16(sqlite3_context*, const void*, int, void(*)(void*)); -void sqlite3_result_text16le(sqlite3_context*, const void*, int,void(*)(void*)); -void sqlite3_result_text16be(sqlite3_context*, const void*, int,void(*)(void*)); -void sqlite3_result_value(sqlite3_context*, sqlite3_value*); -void sqlite3_result_zeroblob(sqlite3_context*, int n); - -/* -** CAPI3REF: Define New Collating Sequences -** -** ^These functions add, remove, or modify a [collation] associated -** with the [database connection] specified as the first argument. -** -** ^The name of the collation is a UTF-8 string -** for sqlite3_create_collation() and sqlite3_create_collation_v2() -** and a UTF-16 string in native byte order for sqlite3_create_collation16(). -** ^Collation names that compare equal according to [sqlite3_strnicmp()] are -** considered to be the same name. -** -** ^(The third argument (eTextRep) must be one of the constants: -**
      -**
    • [SQLITE_UTF8], -**
    • [SQLITE_UTF16LE], -**
    • [SQLITE_UTF16BE], -**
    • [SQLITE_UTF16], or -**
    • [SQLITE_UTF16_ALIGNED]. -**
    )^ -** ^The eTextRep argument determines the encoding of strings passed -** to the collating function callback, xCallback. -** ^The [SQLITE_UTF16] and [SQLITE_UTF16_ALIGNED] values for eTextRep -** force strings to be UTF16 with native byte order. -** ^The [SQLITE_UTF16_ALIGNED] value for eTextRep forces strings to begin -** on an even byte address. -** -** ^The fourth argument, pArg, is an application data pointer that is passed -** through as the first argument to the collating function callback. -** -** ^The fifth argument, xCallback, is a pointer to the collating function. -** ^Multiple collating functions can be registered using the same name but -** with different eTextRep parameters and SQLite will use whichever -** function requires the least amount of data transformation. -** ^If the xCallback argument is NULL then the collating function is -** deleted. ^When all collating functions having the same name are deleted, -** that collation is no longer usable. -** -** ^The collating function callback is invoked with a copy of the pArg -** application data pointer and with two strings in the encoding specified -** by the eTextRep argument. The collating function must return an -** integer that is negative, zero, or positive -** if the first string is less than, equal to, or greater than the second, -** respectively. A collating function must always return the same answer -** given the same inputs. If two or more collating functions are registered -** to the same collation name (using different eTextRep values) then all -** must give an equivalent answer when invoked with equivalent strings. -** The collating function must obey the following properties for all -** strings A, B, and C: -** -**
      -**
    1. If A==B then B==A. -**
    2. If A==B and B==C then A==C. -**
    3. If A<B THEN B>A. -**
    4. If A<B and B<C then A<C. -**
    -** -** If a collating function fails any of the above constraints and that -** collating function is registered and used, then the behavior of SQLite -** is undefined. -** -** ^The sqlite3_create_collation_v2() works like sqlite3_create_collation() -** with the addition that the xDestroy callback is invoked on pArg when -** the collating function is deleted. -** ^Collating functions are deleted when they are overridden by later -** calls to the collation creation functions or when the -** [database connection] is closed using [sqlite3_close()]. -** -** ^The xDestroy callback is not called if the -** sqlite3_create_collation_v2() function fails. Applications that invoke -** sqlite3_create_collation_v2() with a non-NULL xDestroy argument should -** check the return code and dispose of the application data pointer -** themselves rather than expecting SQLite to deal with it for them. -** This is different from every other SQLite interface. The inconsistency -** is unfortunate but cannot be changed without breaking backwards -** compatibility. -** -** See also: [sqlite3_collation_needed()] and [sqlite3_collation_needed16()]. -*/ -int sqlite3_create_collation( - sqlite3*, - const char *zName, - int eTextRep, - void *pArg, - int(*xCompare)(void*,int,const void*,int,const void*) -); -int sqlite3_create_collation_v2( - sqlite3*, - const char *zName, - int eTextRep, - void *pArg, - int(*xCompare)(void*,int,const void*,int,const void*), - void(*xDestroy)(void*) -); -int sqlite3_create_collation16( - sqlite3*, - const void *zName, - int eTextRep, - void *pArg, - int(*xCompare)(void*,int,const void*,int,const void*) -); - -/* -** CAPI3REF: Collation Needed Callbacks -** -** ^To avoid having to register all collation sequences before a database -** can be used, a single callback function may be registered with the -** [database connection] to be invoked whenever an undefined collation -** sequence is required. -** -** ^If the function is registered using the sqlite3_collation_needed() API, -** then it is passed the names of undefined collation sequences as strings -** encoded in UTF-8. ^If sqlite3_collation_needed16() is used, -** the names are passed as UTF-16 in machine native byte order. -** ^A call to either function replaces the existing collation-needed callback. -** -** ^(When the callback is invoked, the first argument passed is a copy -** of the second argument to sqlite3_collation_needed() or -** sqlite3_collation_needed16(). The second argument is the database -** connection. The third argument is one of [SQLITE_UTF8], [SQLITE_UTF16BE], -** or [SQLITE_UTF16LE], indicating the most desirable form of the collation -** sequence function required. The fourth parameter is the name of the -** required collation sequence.)^ -** -** The callback function should register the desired collation using -** [sqlite3_create_collation()], [sqlite3_create_collation16()], or -** [sqlite3_create_collation_v2()]. -*/ -int sqlite3_collation_needed( - sqlite3*, - void*, - void(*)(void*,sqlite3*,int eTextRep,const char*) -); -int sqlite3_collation_needed16( - sqlite3*, - void*, - void(*)(void*,sqlite3*,int eTextRep,const void*) -); - -#ifdef SQLITE_HAS_CODEC -/* -** Specify the key for an encrypted database. This routine should be -** called right after sqlite3_open(). -** -** The code to implement this API is not available in the public release -** of SQLite. -*/ -int sqlite3_key( - sqlite3 *db, /* Database to be rekeyed */ - const void *pKey, int nKey /* The key */ -); - -/* -** Change the key on an open database. If the current database is not -** encrypted, this routine will encrypt it. If pNew==0 or nNew==0, the -** database is decrypted. -** -** The code to implement this API is not available in the public release -** of SQLite. -*/ -int sqlite3_rekey( - sqlite3 *db, /* Database to be rekeyed */ - const void *pKey, int nKey /* The new key */ -); - -/* -** Specify the activation key for a SEE database. Unless -** activated, none of the SEE routines will work. -*/ -void sqlite3_activate_see( - const char *zPassPhrase /* Activation phrase */ -); -#endif - -#ifdef SQLITE_ENABLE_CEROD -/* -** Specify the activation key for a CEROD database. Unless -** activated, none of the CEROD routines will work. -*/ -void sqlite3_activate_cerod( - const char *zPassPhrase /* Activation phrase */ -); -#endif - -/* -** CAPI3REF: Suspend Execution For A Short Time -** -** The sqlite3_sleep() function causes the current thread to suspend execution -** for at least a number of milliseconds specified in its parameter. -** -** If the operating system does not support sleep requests with -** millisecond time resolution, then the time will be rounded up to -** the nearest second. The number of milliseconds of sleep actually -** requested from the operating system is returned. -** -** ^SQLite implements this interface by calling the xSleep() -** method of the default [sqlite3_vfs] object. If the xSleep() method -** of the default VFS is not implemented correctly, or not implemented at -** all, then the behavior of sqlite3_sleep() may deviate from the description -** in the previous paragraphs. -*/ -int sqlite3_sleep(int); - -/* -** CAPI3REF: Name Of The Folder Holding Temporary Files -** -** ^(If this global variable is made to point to a string which is -** the name of a folder (a.k.a. directory), then all temporary files -** created by SQLite when using a built-in [sqlite3_vfs | VFS] -** will be placed in that directory.)^ ^If this variable -** is a NULL pointer, then SQLite performs a search for an appropriate -** temporary file directory. -** -** It is not safe to read or modify this variable in more than one -** thread at a time. It is not safe to read or modify this variable -** if a [database connection] is being used at the same time in a separate -** thread. -** It is intended that this variable be set once -** as part of process initialization and before any SQLite interface -** routines have been called and that this variable remain unchanged -** thereafter. -** -** ^The [temp_store_directory pragma] may modify this variable and cause -** it to point to memory obtained from [sqlite3_malloc]. ^Furthermore, -** the [temp_store_directory pragma] always assumes that any string -** that this variable points to is held in memory obtained from -** [sqlite3_malloc] and the pragma may attempt to free that memory -** using [sqlite3_free]. -** Hence, if this variable is modified directly, either it should be -** made NULL or made to point to memory obtained from [sqlite3_malloc] -** or else the use of the [temp_store_directory pragma] should be avoided. -*/ -SQLITE_EXTERN char *sqlite3_temp_directory; - -/* -** CAPI3REF: Test For Auto-Commit Mode -** KEYWORDS: {autocommit mode} -** -** ^The sqlite3_get_autocommit() interface returns non-zero or -** zero if the given database connection is or is not in autocommit mode, -** respectively. ^Autocommit mode is on by default. -** ^Autocommit mode is disabled by a [BEGIN] statement. -** ^Autocommit mode is re-enabled by a [COMMIT] or [ROLLBACK]. -** -** If certain kinds of errors occur on a statement within a multi-statement -** transaction (errors including [SQLITE_FULL], [SQLITE_IOERR], -** [SQLITE_NOMEM], [SQLITE_BUSY], and [SQLITE_INTERRUPT]) then the -** transaction might be rolled back automatically. The only way to -** find out whether SQLite automatically rolled back the transaction after -** an error is to use this function. -** -** If another thread changes the autocommit status of the database -** connection while this routine is running, then the return value -** is undefined. -*/ -int sqlite3_get_autocommit(sqlite3*); - -/* -** CAPI3REF: Find The Database Handle Of A Prepared Statement -** -** ^The sqlite3_db_handle interface returns the [database connection] handle -** to which a [prepared statement] belongs. ^The [database connection] -** returned by sqlite3_db_handle is the same [database connection] -** that was the first argument -** to the [sqlite3_prepare_v2()] call (or its variants) that was used to -** create the statement in the first place. -*/ -sqlite3 *sqlite3_db_handle(sqlite3_stmt*); - -/* -** CAPI3REF: Find the next prepared statement -** -** ^This interface returns a pointer to the next [prepared statement] after -** pStmt associated with the [database connection] pDb. ^If pStmt is NULL -** then this interface returns a pointer to the first prepared statement -** associated with the database connection pDb. ^If no prepared statement -** satisfies the conditions of this routine, it returns NULL. -** -** The [database connection] pointer D in a call to -** [sqlite3_next_stmt(D,S)] must refer to an open database -** connection and in particular must not be a NULL pointer. -*/ -sqlite3_stmt *sqlite3_next_stmt(sqlite3 *pDb, sqlite3_stmt *pStmt); - -/* -** CAPI3REF: Commit And Rollback Notification Callbacks -** -** ^The sqlite3_commit_hook() interface registers a callback -** function to be invoked whenever a transaction is [COMMIT | committed]. -** ^Any callback set by a previous call to sqlite3_commit_hook() -** for the same database connection is overridden. -** ^The sqlite3_rollback_hook() interface registers a callback -** function to be invoked whenever a transaction is [ROLLBACK | rolled back]. -** ^Any callback set by a previous call to sqlite3_rollback_hook() -** for the same database connection is overridden. -** ^The pArg argument is passed through to the callback. -** ^If the callback on a commit hook function returns non-zero, -** then the commit is converted into a rollback. -** -** ^The sqlite3_commit_hook(D,C,P) and sqlite3_rollback_hook(D,C,P) functions -** return the P argument from the previous call of the same function -** on the same [database connection] D, or NULL for -** the first call for each function on D. -** -** The callback implementation must not do anything that will modify -** the database connection that invoked the callback. Any actions -** to modify the database connection must be deferred until after the -** completion of the [sqlite3_step()] call that triggered the commit -** or rollback hook in the first place. -** Note that [sqlite3_prepare_v2()] and [sqlite3_step()] both modify their -** database connections for the meaning of "modify" in this paragraph. -** -** ^Registering a NULL function disables the callback. -** -** ^When the commit hook callback routine returns zero, the [COMMIT] -** operation is allowed to continue normally. ^If the commit hook -** returns non-zero, then the [COMMIT] is converted into a [ROLLBACK]. -** ^The rollback hook is invoked on a rollback that results from a commit -** hook returning non-zero, just as it would be with any other rollback. -** -** ^For the purposes of this API, a transaction is said to have been -** rolled back if an explicit "ROLLBACK" statement is executed, or -** an error or constraint causes an implicit rollback to occur. -** ^The rollback callback is not invoked if a transaction is -** automatically rolled back because the database connection is closed. -** -** See also the [sqlite3_update_hook()] interface. -*/ -void *sqlite3_commit_hook(sqlite3*, int(*)(void*), void*); -void *sqlite3_rollback_hook(sqlite3*, void(*)(void *), void*); - -/* -** CAPI3REF: Data Change Notification Callbacks -** -** ^The sqlite3_update_hook() interface registers a callback function -** with the [database connection] identified by the first argument -** to be invoked whenever a row is updated, inserted or deleted. -** ^Any callback set by a previous call to this function -** for the same database connection is overridden. -** -** ^The second argument is a pointer to the function to invoke when a -** row is updated, inserted or deleted. -** ^The first argument to the callback is a copy of the third argument -** to sqlite3_update_hook(). -** ^The second callback argument is one of [SQLITE_INSERT], [SQLITE_DELETE], -** or [SQLITE_UPDATE], depending on the operation that caused the callback -** to be invoked. -** ^The third and fourth arguments to the callback contain pointers to the -** database and table name containing the affected row. -** ^The final callback parameter is the [rowid] of the row. -** ^In the case of an update, this is the [rowid] after the update takes place. -** -** ^(The update hook is not invoked when internal system tables are -** modified (i.e. sqlite_master and sqlite_sequence).)^ -** -** ^In the current implementation, the update hook -** is not invoked when duplication rows are deleted because of an -** [ON CONFLICT | ON CONFLICT REPLACE] clause. ^Nor is the update hook -** invoked when rows are deleted using the [truncate optimization]. -** The exceptions defined in this paragraph might change in a future -** release of SQLite. -** -** The update hook implementation must not do anything that will modify -** the database connection that invoked the update hook. Any actions -** to modify the database connection must be deferred until after the -** completion of the [sqlite3_step()] call that triggered the update hook. -** Note that [sqlite3_prepare_v2()] and [sqlite3_step()] both modify their -** database connections for the meaning of "modify" in this paragraph. -** -** ^The sqlite3_update_hook(D,C,P) function -** returns the P argument from the previous call -** on the same [database connection] D, or NULL for -** the first call on D. -** -** See also the [sqlite3_commit_hook()] and [sqlite3_rollback_hook()] -** interfaces. -*/ -void *sqlite3_update_hook( - sqlite3*, - void(*)(void *,int ,char const *,char const *,sqlite3_int64), - void* -); - -/* -** CAPI3REF: Enable Or Disable Shared Pager Cache -** KEYWORDS: {shared cache} -** -** ^(This routine enables or disables the sharing of the database cache -** and schema data structures between [database connection | connections] -** to the same database. Sharing is enabled if the argument is true -** and disabled if the argument is false.)^ -** -** ^Cache sharing is enabled and disabled for an entire process. -** This is a change as of SQLite version 3.5.0. In prior versions of SQLite, -** sharing was enabled or disabled for each thread separately. -** -** ^(The cache sharing mode set by this interface effects all subsequent -** calls to [sqlite3_open()], [sqlite3_open_v2()], and [sqlite3_open16()]. -** Existing database connections continue use the sharing mode -** that was in effect at the time they were opened.)^ -** -** ^(This routine returns [SQLITE_OK] if shared cache was enabled or disabled -** successfully. An [error code] is returned otherwise.)^ -** -** ^Shared cache is disabled by default. But this might change in -** future releases of SQLite. Applications that care about shared -** cache setting should set it explicitly. -** -** See Also: [SQLite Shared-Cache Mode] -*/ -int sqlite3_enable_shared_cache(int); - -/* -** CAPI3REF: Attempt To Free Heap Memory -** -** ^The sqlite3_release_memory() interface attempts to free N bytes -** of heap memory by deallocating non-essential memory allocations -** held by the database library. Memory used to cache database -** pages to improve performance is an example of non-essential memory. -** ^sqlite3_release_memory() returns the number of bytes actually freed, -** which might be more or less than the amount requested. -** ^The sqlite3_release_memory() routine is a no-op returning zero -** if SQLite is not compiled with [SQLITE_ENABLE_MEMORY_MANAGEMENT]. -*/ -int sqlite3_release_memory(int); - -/* -** CAPI3REF: Impose A Limit On Heap Size -** -** ^The sqlite3_soft_heap_limit64() interface sets and/or queries the -** soft limit on the amount of heap memory that may be allocated by SQLite. -** ^SQLite strives to keep heap memory utilization below the soft heap -** limit by reducing the number of pages held in the page cache -** as heap memory usages approaches the limit. -** ^The soft heap limit is "soft" because even though SQLite strives to stay -** below the limit, it will exceed the limit rather than generate -** an [SQLITE_NOMEM] error. In other words, the soft heap limit -** is advisory only. -** -** ^The return value from sqlite3_soft_heap_limit64() is the size of -** the soft heap limit prior to the call. ^If the argument N is negative -** then no change is made to the soft heap limit. Hence, the current -** size of the soft heap limit can be determined by invoking -** sqlite3_soft_heap_limit64() with a negative argument. -** -** ^If the argument N is zero then the soft heap limit is disabled. -** -** ^(The soft heap limit is not enforced in the current implementation -** if one or more of following conditions are true: -** -**
      -**
    • The soft heap limit is set to zero. -**
    • Memory accounting is disabled using a combination of the -** [sqlite3_config]([SQLITE_CONFIG_MEMSTATUS],...) start-time option and -** the [SQLITE_DEFAULT_MEMSTATUS] compile-time option. -**
    • An alternative page cache implementation is specified using -** [sqlite3_config]([SQLITE_CONFIG_PCACHE],...). -**
    • The page cache allocates from its own memory pool supplied -** by [sqlite3_config]([SQLITE_CONFIG_PAGECACHE],...) rather than -** from the heap. -**
    )^ -** -** Beginning with SQLite version 3.7.3, the soft heap limit is enforced -** regardless of whether or not the [SQLITE_ENABLE_MEMORY_MANAGEMENT] -** compile-time option is invoked. With [SQLITE_ENABLE_MEMORY_MANAGEMENT], -** the soft heap limit is enforced on every memory allocation. Without -** [SQLITE_ENABLE_MEMORY_MANAGEMENT], the soft heap limit is only enforced -** when memory is allocated by the page cache. Testing suggests that because -** the page cache is the predominate memory user in SQLite, most -** applications will achieve adequate soft heap limit enforcement without -** the use of [SQLITE_ENABLE_MEMORY_MANAGEMENT]. -** -** The circumstances under which SQLite will enforce the soft heap limit may -** changes in future releases of SQLite. -*/ -sqlite3_int64 sqlite3_soft_heap_limit64(sqlite3_int64 N); - -/* -** CAPI3REF: Deprecated Soft Heap Limit Interface -** DEPRECATED -** -** This is a deprecated version of the [sqlite3_soft_heap_limit64()] -** interface. This routine is provided for historical compatibility -** only. All new applications should use the -** [sqlite3_soft_heap_limit64()] interface rather than this one. -*/ -SQLITE_DEPRECATED void sqlite3_soft_heap_limit(int N); - - -/* -** CAPI3REF: Extract Metadata About A Column Of A Table -** -** ^This routine returns metadata about a specific column of a specific -** database table accessible using the [database connection] handle -** passed as the first function argument. -** -** ^The column is identified by the second, third and fourth parameters to -** this function. ^The second parameter is either the name of the database -** (i.e. "main", "temp", or an attached database) containing the specified -** table or NULL. ^If it is NULL, then all attached databases are searched -** for the table using the same algorithm used by the database engine to -** resolve unqualified table references. -** -** ^The third and fourth parameters to this function are the table and column -** name of the desired column, respectively. Neither of these parameters -** may be NULL. -** -** ^Metadata is returned by writing to the memory locations passed as the 5th -** and subsequent parameters to this function. ^Any of these arguments may be -** NULL, in which case the corresponding element of metadata is omitted. -** -** ^(
    -** -**
    Parameter Output
    Type     		Description -** -**
    5th const char* Data type -**
    6th const char* Name of default collation sequence -**
    7th int True if column has a NOT NULL constraint -**
    8th int True if column is part of the PRIMARY KEY -**
    9th int True if column is [AUTOINCREMENT] -**
    -**
    )^ -** -** ^The memory pointed to by the character pointers returned for the -** declaration type and collation sequence is valid only until the next -** call to any SQLite API function. -** -** ^If the specified table is actually a view, an [error code] is returned. -** -** ^If the specified column is "rowid", "oid" or "_rowid_" and an -** [INTEGER PRIMARY KEY] column has been explicitly declared, then the output -** parameters are set for the explicitly declared column. ^(If there is no -** explicitly declared [INTEGER PRIMARY KEY] column, then the output -** parameters are set as follows: -** -** 
    -**     data type: "INTEGER"
-**     collation sequence: "BINARY"
-**     not null: 0
-**     primary key: 1
-**     auto increment: 0
-**
    )^ -** -** ^(This function may load one or more schemas from database files. If an -** error occurs during this process, or if the requested table or column -** cannot be found, an [error code] is returned and an error message left -** in the [database connection] (to be retrieved using sqlite3_errmsg()).)^ -** -** ^This API is only available if the library was compiled with the -** [SQLITE_ENABLE_COLUMN_METADATA] C-preprocessor symbol defined. -*/ -int sqlite3_table_column_metadata( - sqlite3 *db, /* Connection handle */ - const char *zDbName, /* Database name or NULL */ - const char *zTableName, /* Table name */ - const char *zColumnName, /* Column name */ - char const **pzDataType, /* OUTPUT: Declared data type */ - char const **pzCollSeq, /* OUTPUT: Collation sequence name */ - int *pNotNull, /* OUTPUT: True if NOT NULL constraint exists */ - int *pPrimaryKey, /* OUTPUT: True if column part of PK */ - int *pAutoinc /* OUTPUT: True if column is auto-increment */ -); - -/* -** CAPI3REF: Load An Extension -** -** ^This interface loads an SQLite extension library from the named file. -** -** ^The sqlite3_load_extension() interface attempts to load an -** SQLite extension library contained in the file zFile. -** -** ^The entry point is zProc. -** ^zProc may be 0, in which case the name of the entry point -** defaults to "sqlite3_extension_init". -** ^The sqlite3_load_extension() interface returns -** [SQLITE_OK] on success and [SQLITE_ERROR] if something goes wrong. -** ^If an error occurs and pzErrMsg is not 0, then the -** [sqlite3_load_extension()] interface shall attempt to -** fill *pzErrMsg with error message text stored in memory -** obtained from [sqlite3_malloc()]. The calling function -** should free this memory by calling [sqlite3_free()]. -** -** ^Extension loading must be enabled using -** [sqlite3_enable_load_extension()] prior to calling this API, -** otherwise an error will be returned. -** -** See also the [load_extension() SQL function]. -*/ -int sqlite3_load_extension( - sqlite3 *db, /* Load the extension into this database connection */ - const char *zFile, /* Name of the shared library containing extension */ - const char *zProc, /* Entry point. Derived from zFile if 0 */ - char **pzErrMsg /* Put error message here if not 0 */ -); - -/* -** CAPI3REF: Enable Or Disable Extension Loading -** -** ^So as not to open security holes in older applications that are -** unprepared to deal with extension loading, and as a means of disabling -** extension loading while evaluating user-entered SQL, the following API -** is provided to turn the [sqlite3_load_extension()] mechanism on and off. -** -** ^Extension loading is off by default. See ticket #1863. -** ^Call the sqlite3_enable_load_extension() routine with onoff==1 -** to turn extension loading on and call it with onoff==0 to turn -** it back off again. -*/ -int sqlite3_enable_load_extension(sqlite3 *db, int onoff); - -/* -** CAPI3REF: Automatically Load Statically Linked Extensions -** -** ^This interface causes the xEntryPoint() function to be invoked for -** each new [database connection] that is created. The idea here is that -** xEntryPoint() is the entry point for a statically linked SQLite extension -** that is to be automatically loaded into all new database connections. -** -** ^(Even though the function prototype shows that xEntryPoint() takes -** no arguments and returns void, SQLite invokes xEntryPoint() with three -** arguments and expects and integer result as if the signature of the -** entry point where as follows: -** -** 
    -**    int xEntryPoint(
-**      sqlite3 *db,
-**      const char **pzErrMsg,
-**      const struct sqlite3_api_routines *pThunk
-**    );
-**
    )^ -** -** If the xEntryPoint routine encounters an error, it should make *pzErrMsg -** point to an appropriate error message (obtained from [sqlite3_mprintf()]) -** and return an appropriate [error code]. ^SQLite ensures that *pzErrMsg -** is NULL before calling the xEntryPoint(). ^SQLite will invoke -** [sqlite3_free()] on *pzErrMsg after xEntryPoint() returns. ^If any -** xEntryPoint() returns an error, the [sqlite3_open()], [sqlite3_open16()], -** or [sqlite3_open_v2()] call that provoked the xEntryPoint() will fail. -** -** ^Calling sqlite3_auto_extension(X) with an entry point X that is already -** on the list of automatic extensions is a harmless no-op. ^No entry point -** will be called more than once for each database connection that is opened. -** -** See also: [sqlite3_reset_auto_extension()]. -*/ -int sqlite3_auto_extension(void (*xEntryPoint)(void)); - -/* -** CAPI3REF: Reset Automatic Extension Loading -** -** ^This interface disables all automatic extensions previously -** registered using [sqlite3_auto_extension()]. -*/ -void sqlite3_reset_auto_extension(void); - -/* -** The interface to the virtual-table mechanism is currently considered -** to be experimental. The interface might change in incompatible ways. -** If this is a problem for you, do not use the interface at this time. -** -** When the virtual-table mechanism stabilizes, we will declare the -** interface fixed, support it indefinitely, and remove this comment. -*/ - -/* -** Structures used by the virtual table interface -*/ -typedef struct sqlite3_vtab sqlite3_vtab; -typedef struct sqlite3_index_info sqlite3_index_info; -typedef struct sqlite3_vtab_cursor sqlite3_vtab_cursor; -typedef struct sqlite3_module sqlite3_module; - -/* -** CAPI3REF: Virtual Table Object -** KEYWORDS: sqlite3_module {virtual table module} -** -** This structure, sometimes called a "virtual table module", -** defines the implementation of a [virtual tables]. -** This structure consists mostly of methods for the module. -** -** ^A virtual table module is created by filling in a persistent -** instance of this structure and passing a pointer to that instance -** to [sqlite3_create_module()] or [sqlite3_create_module_v2()]. -** ^The registration remains valid until it is replaced by a different -** module or until the [database connection] closes. The content -** of this structure must not change while it is registered with -** any database connection. -*/ -struct sqlite3_module { - int iVersion; - int (*xCreate)(sqlite3*, void *pAux, - int argc, const char *const*argv, - sqlite3_vtab **ppVTab, char**); - int (*xConnect)(sqlite3*, void *pAux, - int argc, const char *const*argv, - sqlite3_vtab **ppVTab, char**); - int (*xBestIndex)(sqlite3_vtab *pVTab, sqlite3_index_info*); - int (*xDisconnect)(sqlite3_vtab *pVTab); - int (*xDestroy)(sqlite3_vtab *pVTab); - int (*xOpen)(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor); - int (*xClose)(sqlite3_vtab_cursor*); - int (*xFilter)(sqlite3_vtab_cursor*, int idxNum, const char *idxStr, - int argc, sqlite3_value **argv); - int (*xNext)(sqlite3_vtab_cursor*); - int (*xEof)(sqlite3_vtab_cursor*); - int (*xColumn)(sqlite3_vtab_cursor*, sqlite3_context*, int); - int (*xRowid)(sqlite3_vtab_cursor*, sqlite3_int64 *pRowid); - int (*xUpdate)(sqlite3_vtab *, int, sqlite3_value **, sqlite3_int64 *); - int (*xBegin)(sqlite3_vtab *pVTab); - int (*xSync)(sqlite3_vtab *pVTab); - int (*xCommit)(sqlite3_vtab *pVTab); - int (*xRollback)(sqlite3_vtab *pVTab); - int (*xFindFunction)(sqlite3_vtab *pVtab, int nArg, const char *zName, - void (**pxFunc)(sqlite3_context*,int,sqlite3_value**), - void **ppArg); - int (*xRename)(sqlite3_vtab *pVtab, const char *zNew); - /* The methods above are in version 1 of the sqlite_module object. Those - ** below are for version 2 and greater. */ - int (*xSavepoint)(sqlite3_vtab *pVTab, int); - int (*xRelease)(sqlite3_vtab *pVTab, int); - int (*xRollbackTo)(sqlite3_vtab *pVTab, int); -}; - -/* -** CAPI3REF: Virtual Table Indexing Information -** KEYWORDS: sqlite3_index_info -** -** The sqlite3_index_info structure and its substructures is used as part -** of the [virtual table] interface to -** pass information into and receive the reply from the [xBestIndex] -** method of a [virtual table module]. The fields under **Inputs** are the -** inputs to xBestIndex and are read-only. xBestIndex inserts its -** results into the **Outputs** fields. -** -** ^(The aConstraint[] array records WHERE clause constraints of the form: -** -**
    column OP expr
    -** -** where OP is =, <, <=, >, or >=.)^ ^(The particular operator is -** stored in aConstraint[].op using one of the -** [SQLITE_INDEX_CONSTRAINT_EQ | SQLITE_INDEX_CONSTRAINT_ values].)^ -** ^(The index of the column is stored in -** aConstraint[].iColumn.)^ ^(aConstraint[].usable is TRUE if the -** expr on the right-hand side can be evaluated (and thus the constraint -** is usable) and false if it cannot.)^ -** -** ^The optimizer automatically inverts terms of the form "expr OP column" -** and makes other simplifications to the WHERE clause in an attempt to -** get as many WHERE clause terms into the form shown above as possible. -** ^The aConstraint[] array only reports WHERE clause terms that are -** relevant to the particular virtual table being queried. -** -** ^Information about the ORDER BY clause is stored in aOrderBy[]. -** ^Each term of aOrderBy records a column of the ORDER BY clause. -** -** The [xBestIndex] method must fill aConstraintUsage[] with information -** about what parameters to pass to xFilter. ^If argvIndex>0 then -** the right-hand side of the corresponding aConstraint[] is evaluated -** and becomes the argvIndex-th entry in argv. ^(If aConstraintUsage[].omit -** is true, then the constraint is assumed to be fully handled by the -** virtual table and is not checked again by SQLite.)^ -** -** ^The idxNum and idxPtr values are recorded and passed into the -** [xFilter] method. -** ^[sqlite3_free()] is used to free idxPtr if and only if -** needToFreeIdxPtr is true. -** -** ^The orderByConsumed means that output from [xFilter]/[xNext] will occur in -** the correct order to satisfy the ORDER BY clause so that no separate -** sorting step is required. -** -** ^The estimatedCost value is an estimate of the cost of doing the -** particular lookup. A full scan of a table with N entries should have -** a cost of N. A binary search of a table of N entries should have a -** cost of approximately log(N). -*/ -struct sqlite3_index_info { - /* Inputs */ - int nConstraint; /* Number of entries in aConstraint */ - struct sqlite3_index_constraint { - int iColumn; /* Column on left-hand side of constraint */ - unsigned char op; /* Constraint operator */ - unsigned char usable; /* True if this constraint is usable */ - int iTermOffset; /* Used internally - xBestIndex should ignore */ - } *aConstraint; /* Table of WHERE clause constraints */ - int nOrderBy; /* Number of terms in the ORDER BY clause */ - struct sqlite3_index_orderby { - int iColumn; /* Column number */ - unsigned char desc; /* True for DESC. False for ASC. */ - } *aOrderBy; /* The ORDER BY clause */ - /* Outputs */ - struct sqlite3_index_constraint_usage { - int argvIndex; /* if >0, constraint is part of argv to xFilter */ - unsigned char omit; /* Do not code a test for this constraint */ - } *aConstraintUsage; - int idxNum; /* Number used to identify the index */ - char *idxStr; /* String, possibly obtained from sqlite3_malloc */ - int needToFreeIdxStr; /* Free idxStr using sqlite3_free() if true */ - int orderByConsumed; /* True if output is already ordered */ - double estimatedCost; /* Estimated cost of using this index */ -}; - -/* -** CAPI3REF: Virtual Table Constraint Operator Codes -** -** These macros defined the allowed values for the -** [sqlite3_index_info].aConstraint[].op field. Each value represents -** an operator that is part of a constraint term in the wHERE clause of -** a query that uses a [virtual table]. -*/ -#define SQLITE_INDEX_CONSTRAINT_EQ 2 -#define SQLITE_INDEX_CONSTRAINT_GT 4 -#define SQLITE_INDEX_CONSTRAINT_LE 8 -#define SQLITE_INDEX_CONSTRAINT_LT 16 -#define SQLITE_INDEX_CONSTRAINT_GE 32 -#define SQLITE_INDEX_CONSTRAINT_MATCH 64 - -/* -** CAPI3REF: Register A Virtual Table Implementation -** -** ^These routines are used to register a new [virtual table module] name. -** ^Module names must be registered before -** creating a new [virtual table] using the module and before using a -** preexisting [virtual table] for the module. -** -** ^The module name is registered on the [database connection] specified -** by the first parameter. ^The name of the module is given by the -** second parameter. ^The third parameter is a pointer to -** the implementation of the [virtual table module]. ^The fourth -** parameter is an arbitrary client data pointer that is passed through -** into the [xCreate] and [xConnect] methods of the virtual table module -** when a new virtual table is be being created or reinitialized. -** -** ^The sqlite3_create_module_v2() interface has a fifth parameter which -** is a pointer to a destructor for the pClientData. ^SQLite will -** invoke the destructor function (if it is not NULL) when SQLite -** no longer needs the pClientData pointer. ^The destructor will also -** be invoked if the call to sqlite3_create_module_v2() fails. -** ^The sqlite3_create_module() -** interface is equivalent to sqlite3_create_module_v2() with a NULL -** destructor. -*/ -int sqlite3_create_module( - sqlite3 *db, /* SQLite connection to register module with */ - const char *zName, /* Name of the module */ - const sqlite3_module *p, /* Methods for the module */ - void *pClientData /* Client data for xCreate/xConnect */ -); -int sqlite3_create_module_v2( - sqlite3 *db, /* SQLite connection to register module with */ - const char *zName, /* Name of the module */ - const sqlite3_module *p, /* Methods for the module */ - void *pClientData, /* Client data for xCreate/xConnect */ - void(*xDestroy)(void*) /* Module destructor function */ -); - -/* -** CAPI3REF: Virtual Table Instance Object -** KEYWORDS: sqlite3_vtab -** -** Every [virtual table module] implementation uses a subclass -** of this object to describe a particular instance -** of the [virtual table]. Each subclass will -** be tailored to the specific needs of the module implementation. -** The purpose of this superclass is to define certain fields that are -** common to all module implementations. -** -** ^Virtual tables methods can set an error message by assigning a -** string obtained from [sqlite3_mprintf()] to zErrMsg. The method should -** take care that any prior string is freed by a call to [sqlite3_free()] -** prior to assigning a new string to zErrMsg. ^After the error message -** is delivered up to the client application, the string will be automatically -** freed by sqlite3_free() and the zErrMsg field will be zeroed. -*/ -struct sqlite3_vtab { - const sqlite3_module *pModule; /* The module for this virtual table */ - int nRef; /* NO LONGER USED */ - char *zErrMsg; /* Error message from sqlite3_mprintf() */ - /* Virtual table implementations will typically add additional fields */ -}; - -/* -** CAPI3REF: Virtual Table Cursor Object -** KEYWORDS: sqlite3_vtab_cursor {virtual table cursor} -** -** Every [virtual table module] implementation uses a subclass of the -** following structure to describe cursors that point into the -** [virtual table] and are used -** to loop through the virtual table. Cursors are created using the -** [sqlite3_module.xOpen | xOpen] method of the module and are destroyed -** by the [sqlite3_module.xClose | xClose] method. Cursors are used -** by the [xFilter], [xNext], [xEof], [xColumn], and [xRowid] methods -** of the module. Each module implementation will define -** the content of a cursor structure to suit its own needs. -** -** This superclass exists in order to define fields of the cursor that -** are common to all implementations. -*/ -struct sqlite3_vtab_cursor { - sqlite3_vtab *pVtab; /* Virtual table of this cursor */ - /* Virtual table implementations will typically add additional fields */ -}; - -/* -** CAPI3REF: Declare The Schema Of A Virtual Table -** -** ^The [xCreate] and [xConnect] methods of a -** [virtual table module] call this interface -** to declare the format (the names and datatypes of the columns) of -** the virtual tables they implement. -*/ -int sqlite3_declare_vtab(sqlite3*, const char *zSQL); - -/* -** CAPI3REF: Overload A Function For A Virtual Table -** -** ^(Virtual tables can provide alternative implementations of functions -** using the [xFindFunction] method of the [virtual table module]. -** But global versions of those functions -** must exist in order to be overloaded.)^ -** -** ^(This API makes sure a global version of a function with a particular -** name and number of parameters exists. If no such function exists -** before this API is called, a new function is created.)^ ^The implementation -** of the new function always causes an exception to be thrown. So -** the new function is not good for anything by itself. Its only -** purpose is to be a placeholder function that can be overloaded -** by a [virtual table]. -*/ -int sqlite3_overload_function(sqlite3*, const char *zFuncName, int nArg); - -/* -** The interface to the virtual-table mechanism defined above (back up -** to a comment remarkably similar to this one) is currently considered -** to be experimental. The interface might change in incompatible ways. -** If this is a problem for you, do not use the interface at this time. -** -** When the virtual-table mechanism stabilizes, we will declare the -** interface fixed, support it indefinitely, and remove this comment. -*/ - -/* -** CAPI3REF: A Handle To An Open BLOB -** KEYWORDS: {BLOB handle} {BLOB handles} -** -** An instance of this object represents an open BLOB on which -** [sqlite3_blob_open | incremental BLOB I/O] can be performed. -** ^Objects of this type are created by [sqlite3_blob_open()] -** and destroyed by [sqlite3_blob_close()]. -** ^The [sqlite3_blob_read()] and [sqlite3_blob_write()] interfaces -** can be used to read or write small subsections of the BLOB. -** ^The [sqlite3_blob_bytes()] interface returns the size of the BLOB in bytes. -*/ -typedef struct sqlite3_blob sqlite3_blob; - -/* -** CAPI3REF: Open A BLOB For Incremental I/O -** -** ^(This interfaces opens a [BLOB handle | handle] to the BLOB located -** in row iRow, column zColumn, table zTable in database zDb; -** in other words, the same BLOB that would be selected by: -** -** 
    -**     SELECT zColumn FROM zDb.zTable WHERE [rowid] = iRow;
-**
    )^ -** -** ^If the flags parameter is non-zero, then the BLOB is opened for read -** and write access. ^If it is zero, the BLOB is opened for read access. -** ^It is not possible to open a column that is part of an index or primary -** key for writing. ^If [foreign key constraints] are enabled, it is -** not possible to open a column that is part of a [child key] for writing. -** -** ^Note that the database name is not the filename that contains -** the database but rather the symbolic name of the database that -** appears after the AS keyword when the database is connected using [ATTACH]. -** ^For the main database file, the database name is "main". -** ^For TEMP tables, the database name is "temp". -** -** ^(On success, [SQLITE_OK] is returned and the new [BLOB handle] is written -** to *ppBlob. Otherwise an [error code] is returned and *ppBlob is set -** to be a null pointer.)^ -** ^This function sets the [database connection] error code and message -** accessible via [sqlite3_errcode()] and [sqlite3_errmsg()] and related -** functions. ^Note that the *ppBlob variable is always initialized in a -** way that makes it safe to invoke [sqlite3_blob_close()] on *ppBlob -** regardless of the success or failure of this routine. -** -** ^(If the row that a BLOB handle points to is modified by an -** [UPDATE], [DELETE], or by [ON CONFLICT] side-effects -** then the BLOB handle is marked as "expired". -** This is true if any column of the row is changed, even a column -** other than the one the BLOB handle is open on.)^ -** ^Calls to [sqlite3_blob_read()] and [sqlite3_blob_write()] for -** an expired BLOB handle fail with a return code of [SQLITE_ABORT]. -** ^(Changes written into a BLOB prior to the BLOB expiring are not -** rolled back by the expiration of the BLOB. Such changes will eventually -** commit if the transaction continues to completion.)^ -** -** ^Use the [sqlite3_blob_bytes()] interface to determine the size of -** the opened blob. ^The size of a blob may not be changed by this -** interface. Use the [UPDATE] SQL command to change the size of a -** blob. -** -** ^The [sqlite3_bind_zeroblob()] and [sqlite3_result_zeroblob()] interfaces -** and the built-in [zeroblob] SQL function can be used, if desired, -** to create an empty, zero-filled blob in which to read or write using -** this interface. -** -** To avoid a resource leak, every open [BLOB handle] should eventually -** be released by a call to [sqlite3_blob_close()]. -*/ -int sqlite3_blob_open( - sqlite3*, - const char *zDb, - const char *zTable, - const char *zColumn, - sqlite3_int64 iRow, - int flags, - sqlite3_blob **ppBlob -); - -/* -** CAPI3REF: Move a BLOB Handle to a New Row -** -** ^This function is used to move an existing blob handle so that it points -** to a different row of the same database table. ^The new row is identified -** by the rowid value passed as the second argument. Only the row can be -** changed. ^The database, table and column on which the blob handle is open -** remain the same. Moving an existing blob handle to a new row can be -** faster than closing the existing handle and opening a new one. -** -** ^(The new row must meet the same criteria as for [sqlite3_blob_open()] - -** it must exist and there must be either a blob or text value stored in -** the nominated column.)^ ^If the new row is not present in the table, or if -** it does not contain a blob or text value, or if another error occurs, an -** SQLite error code is returned and the blob handle is considered aborted. -** ^All subsequent calls to [sqlite3_blob_read()], [sqlite3_blob_write()] or -** [sqlite3_blob_reopen()] on an aborted blob handle immediately return -** SQLITE_ABORT. ^Calling [sqlite3_blob_bytes()] on an aborted blob handle -** always returns zero. -** -** ^This function sets the database handle error code and message. -*/ -SQLITE_EXPERIMENTAL int sqlite3_blob_reopen(sqlite3_blob *, sqlite3_int64); - -/* -** CAPI3REF: Close A BLOB Handle -** -** ^Closes an open [BLOB handle]. -** -** ^Closing a BLOB shall cause the current transaction to commit -** if there are no other BLOBs, no pending prepared statements, and the -** database connection is in [autocommit mode]. -** ^If any writes were made to the BLOB, they might be held in cache -** until the close operation if they will fit. -** -** ^(Closing the BLOB often forces the changes -** out to disk and so if any I/O errors occur, they will likely occur -** at the time when the BLOB is closed. Any errors that occur during -** closing are reported as a non-zero return value.)^ -** -** ^(The BLOB is closed unconditionally. Even if this routine returns -** an error code, the BLOB is still closed.)^ -** -** ^Calling this routine with a null pointer (such as would be returned -** by a failed call to [sqlite3_blob_open()]) is a harmless no-op. -*/ -int sqlite3_blob_close(sqlite3_blob *); - -/* -** CAPI3REF: Return The Size Of An Open BLOB -** -** ^Returns the size in bytes of the BLOB accessible via the -** successfully opened [BLOB handle] in its only argument. ^The -** incremental blob I/O routines can only read or overwriting existing -** blob content; they cannot change the size of a blob. -** -** This routine only works on a [BLOB handle] which has been created -** by a prior successful call to [sqlite3_blob_open()] and which has not -** been closed by [sqlite3_blob_close()]. Passing any other pointer in -** to this routine results in undefined and probably undesirable behavior. -*/ -int sqlite3_blob_bytes(sqlite3_blob *); - -/* -** CAPI3REF: Read Data From A BLOB Incrementally -** -** ^(This function is used to read data from an open [BLOB handle] into a -** caller-supplied buffer. N bytes of data are copied into buffer Z -** from the open BLOB, starting at offset iOffset.)^ -** -** ^If offset iOffset is less than N bytes from the end of the BLOB, -** [SQLITE_ERROR] is returned and no data is read. ^If N or iOffset is -** less than zero, [SQLITE_ERROR] is returned and no data is read. -** ^The size of the blob (and hence the maximum value of N+iOffset) -** can be determined using the [sqlite3_blob_bytes()] interface. -** -** ^An attempt to read from an expired [BLOB handle] fails with an -** error code of [SQLITE_ABORT]. -** -** ^(On success, sqlite3_blob_read() returns SQLITE_OK. -** Otherwise, an [error code] or an [extended error code] is returned.)^ -** -** This routine only works on a [BLOB handle] which has been created -** by a prior successful call to [sqlite3_blob_open()] and which has not -** been closed by [sqlite3_blob_close()]. Passing any other pointer in -** to this routine results in undefined and probably undesirable behavior. -** -** See also: [sqlite3_blob_write()]. -*/ -int sqlite3_blob_read(sqlite3_blob *, void *Z, int N, int iOffset); - -/* -** CAPI3REF: Write Data Into A BLOB Incrementally -** -** ^This function is used to write data into an open [BLOB handle] from a -** caller-supplied buffer. ^N bytes of data are copied from the buffer Z -** into the open BLOB, starting at offset iOffset. -** -** ^If the [BLOB handle] passed as the first argument was not opened for -** writing (the flags parameter to [sqlite3_blob_open()] was zero), -** this function returns [SQLITE_READONLY]. -** -** ^This function may only modify the contents of the BLOB; it is -** not possible to increase the size of a BLOB using this API. -** ^If offset iOffset is less than N bytes from the end of the BLOB, -** [SQLITE_ERROR] is returned and no data is written. ^If N is -** less than zero [SQLITE_ERROR] is returned and no data is written. -** The size of the BLOB (and hence the maximum value of N+iOffset) -** can be determined using the [sqlite3_blob_bytes()] interface. -** -** ^An attempt to write to an expired [BLOB handle] fails with an -** error code of [SQLITE_ABORT]. ^Writes to the BLOB that occurred -** before the [BLOB handle] expired are not rolled back by the -** expiration of the handle, though of course those changes might -** have been overwritten by the statement that expired the BLOB handle -** or by other independent statements. -** -** ^(On success, sqlite3_blob_write() returns SQLITE_OK. -** Otherwise, an [error code] or an [extended error code] is returned.)^ -** -** This routine only works on a [BLOB handle] which has been created -** by a prior successful call to [sqlite3_blob_open()] and which has not -** been closed by [sqlite3_blob_close()]. Passing any other pointer in -** to this routine results in undefined and probably undesirable behavior. -** -** See also: [sqlite3_blob_read()]. -*/ -int sqlite3_blob_write(sqlite3_blob *, const void *z, int n, int iOffset); - -/* -** CAPI3REF: Virtual File System Objects -** -** A virtual filesystem (VFS) is an [sqlite3_vfs] object -** that SQLite uses to interact -** with the underlying operating system. Most SQLite builds come with a -** single default VFS that is appropriate for the host computer. -** New VFSes can be registered and existing VFSes can be unregistered. -** The following interfaces are provided. -** -** ^The sqlite3_vfs_find() interface returns a pointer to a VFS given its name. -** ^Names are case sensitive. -** ^Names are zero-terminated UTF-8 strings. -** ^If there is no match, a NULL pointer is returned. -** ^If zVfsName is NULL then the default VFS is returned. -** -** ^New VFSes are registered with sqlite3_vfs_register(). -** ^Each new VFS becomes the default VFS if the makeDflt flag is set. -** ^The same VFS can be registered multiple times without injury. -** ^To make an existing VFS into the default VFS, register it again -** with the makeDflt flag set. If two different VFSes with the -** same name are registered, the behavior is undefined. If a -** VFS is registered with a name that is NULL or an empty string, -** then the behavior is undefined. -** -** ^Unregister a VFS with the sqlite3_vfs_unregister() interface. -** ^(If the default VFS is unregistered, another VFS is chosen as -** the default. The choice for the new VFS is arbitrary.)^ -*/ -sqlite3_vfs *sqlite3_vfs_find(const char *zVfsName); -int sqlite3_vfs_register(sqlite3_vfs*, int makeDflt); -int sqlite3_vfs_unregister(sqlite3_vfs*); - -/* -** CAPI3REF: Mutexes -** -** The SQLite core uses these routines for thread -** synchronization. Though they are intended for internal -** use by SQLite, code that links against SQLite is -** permitted to use any of these routines. -** -** The SQLite source code contains multiple implementations -** of these mutex routines. An appropriate implementation -** is selected automatically at compile-time. ^(The following -** implementations are available in the SQLite core: -** -**
      -**
    • SQLITE_MUTEX_OS2 -**
    • SQLITE_MUTEX_PTHREAD -**
    • SQLITE_MUTEX_W32 -**
    • SQLITE_MUTEX_NOOP -**
    )^ -** -** ^The SQLITE_MUTEX_NOOP implementation is a set of routines -** that does no real locking and is appropriate for use in -** a single-threaded application. ^The SQLITE_MUTEX_OS2, -** SQLITE_MUTEX_PTHREAD, and SQLITE_MUTEX_W32 implementations -** are appropriate for use on OS/2, Unix, and Windows. -** -** ^(If SQLite is compiled with the SQLITE_MUTEX_APPDEF preprocessor -** macro defined (with "-DSQLITE_MUTEX_APPDEF=1"), then no mutex -** implementation is included with the library. In this case the -** application must supply a custom mutex implementation using the -** [SQLITE_CONFIG_MUTEX] option of the sqlite3_config() function -** before calling sqlite3_initialize() or any other public sqlite3_ -** function that calls sqlite3_initialize().)^ -** -** ^The sqlite3_mutex_alloc() routine allocates a new -** mutex and returns a pointer to it. ^If it returns NULL -** that means that a mutex could not be allocated. ^SQLite -** will unwind its stack and return an error. ^(The argument -** to sqlite3_mutex_alloc() is one of these integer constants: -** -**
      -**
    • SQLITE_MUTEX_FAST -**
    • SQLITE_MUTEX_RECURSIVE -**
    • SQLITE_MUTEX_STATIC_MASTER -**
    • SQLITE_MUTEX_STATIC_MEM -**
    • SQLITE_MUTEX_STATIC_MEM2 -**
    • SQLITE_MUTEX_STATIC_PRNG -**
    • SQLITE_MUTEX_STATIC_LRU -**
    • SQLITE_MUTEX_STATIC_LRU2 -**
    )^ -** -** ^The first two constants (SQLITE_MUTEX_FAST and SQLITE_MUTEX_RECURSIVE) -** cause sqlite3_mutex_alloc() to create -** a new mutex. ^The new mutex is recursive when SQLITE_MUTEX_RECURSIVE -** is used but not necessarily so when SQLITE_MUTEX_FAST is used. -** The mutex implementation does not need to make a distinction -** between SQLITE_MUTEX_RECURSIVE and SQLITE_MUTEX_FAST if it does -** not want to. ^SQLite will only request a recursive mutex in -** cases where it really needs one. ^If a faster non-recursive mutex -** implementation is available on the host platform, the mutex subsystem -** might return such a mutex in response to SQLITE_MUTEX_FAST. -** -** ^The other allowed parameters to sqlite3_mutex_alloc() (anything other -** than SQLITE_MUTEX_FAST and SQLITE_MUTEX_RECURSIVE) each return -** a pointer to a static preexisting mutex. ^Six static mutexes are -** used by the current version of SQLite. Future versions of SQLite -** may add additional static mutexes. Static mutexes are for internal -** use by SQLite only. Applications that use SQLite mutexes should -** use only the dynamic mutexes returned by SQLITE_MUTEX_FAST or -** SQLITE_MUTEX_RECURSIVE. -** -** ^Note that if one of the dynamic mutex parameters (SQLITE_MUTEX_FAST -** or SQLITE_MUTEX_RECURSIVE) is used then sqlite3_mutex_alloc() -** returns a different mutex on every call. ^But for the static -** mutex types, the same mutex is returned on every call that has -** the same type number. -** -** ^The sqlite3_mutex_free() routine deallocates a previously -** allocated dynamic mutex. ^SQLite is careful to deallocate every -** dynamic mutex that it allocates. The dynamic mutexes must not be in -** use when they are deallocated. Attempting to deallocate a static -** mutex results in undefined behavior. ^SQLite never deallocates -** a static mutex. -** -** ^The sqlite3_mutex_enter() and sqlite3_mutex_try() routines attempt -** to enter a mutex. ^If another thread is already within the mutex, -** sqlite3_mutex_enter() will block and sqlite3_mutex_try() will return -** SQLITE_BUSY. ^The sqlite3_mutex_try() interface returns [SQLITE_OK] -** upon successful entry. ^(Mutexes created using -** SQLITE_MUTEX_RECURSIVE can be entered multiple times by the same thread. -** In such cases the, -** mutex must be exited an equal number of times before another thread -** can enter.)^ ^(If the same thread tries to enter any other -** kind of mutex more than once, the behavior is undefined. -** SQLite will never exhibit -** such behavior in its own use of mutexes.)^ -** -** ^(Some systems (for example, Windows 95) do not support the operation -** implemented by sqlite3_mutex_try(). On those systems, sqlite3_mutex_try() -** will always return SQLITE_BUSY. The SQLite core only ever uses -** sqlite3_mutex_try() as an optimization so this is acceptable behavior.)^ -** -** ^The sqlite3_mutex_leave() routine exits a mutex that was -** previously entered by the same thread. ^(The behavior -** is undefined if the mutex is not currently entered by the -** calling thread or is not currently allocated. SQLite will -** never do either.)^ -** -** ^If the argument to sqlite3_mutex_enter(), sqlite3_mutex_try(), or -** sqlite3_mutex_leave() is a NULL pointer, then all three routines -** behave as no-ops. -** -** See also: [sqlite3_mutex_held()] and [sqlite3_mutex_notheld()]. -*/ -sqlite3_mutex *sqlite3_mutex_alloc(int); -void sqlite3_mutex_free(sqlite3_mutex*); -void sqlite3_mutex_enter(sqlite3_mutex*); -int sqlite3_mutex_try(sqlite3_mutex*); -void sqlite3_mutex_leave(sqlite3_mutex*); - -/* -** CAPI3REF: Mutex Methods Object -** -** An instance of this structure defines the low-level routines -** used to allocate and use mutexes. -** -** Usually, the default mutex implementations provided by SQLite are -** sufficient, however the user has the option of substituting a custom -** implementation for specialized deployments or systems for which SQLite -** does not provide a suitable implementation. In this case, the user -** creates and populates an instance of this structure to pass -** to sqlite3_config() along with the [SQLITE_CONFIG_MUTEX] option. -** Additionally, an instance of this structure can be used as an -** output variable when querying the system for the current mutex -** implementation, using the [SQLITE_CONFIG_GETMUTEX] option. -** -** ^The xMutexInit method defined by this structure is invoked as -** part of system initialization by the sqlite3_initialize() function. -** ^The xMutexInit routine is called by SQLite exactly once for each -** effective call to [sqlite3_initialize()]. -** -** ^The xMutexEnd method defined by this structure is invoked as -** part of system shutdown by the sqlite3_shutdown() function. The -** implementation of this method is expected to release all outstanding -** resources obtained by the mutex methods implementation, especially -** those obtained by the xMutexInit method. ^The xMutexEnd() -** interface is invoked exactly once for each call to [sqlite3_shutdown()]. -** -** ^(The remaining seven methods defined by this structure (xMutexAlloc, -** xMutexFree, xMutexEnter, xMutexTry, xMutexLeave, xMutexHeld and -** xMutexNotheld) implement the following interfaces (respectively): -** -**
      -**
    • [sqlite3_mutex_alloc()]
      • -**
    • [sqlite3_mutex_free()]
      • -**
    • [sqlite3_mutex_enter()]
      • -**
    • [sqlite3_mutex_try()]
      • -**
    • [sqlite3_mutex_leave()]
      • -**
    • [sqlite3_mutex_held()]
      • -**
    • [sqlite3_mutex_notheld()]
      • -**
    )^ -** -** The only difference is that the public sqlite3_XXX functions enumerated -** above silently ignore any invocations that pass a NULL pointer instead -** of a valid mutex handle. The implementations of the methods defined -** by this structure are not required to handle this case, the results -** of passing a NULL pointer instead of a valid mutex handle are undefined -** (i.e. it is acceptable to provide an implementation that segfaults if -** it is passed a NULL pointer). -** -** The xMutexInit() method must be threadsafe. ^It must be harmless to -** invoke xMutexInit() multiple times within the same process and without -** intervening calls to xMutexEnd(). Second and subsequent calls to -** xMutexInit() must be no-ops. -** -** ^xMutexInit() must not use SQLite memory allocation ([sqlite3_malloc()] -** and its associates). ^Similarly, xMutexAlloc() must not use SQLite memory -** allocation for a static mutex. ^However xMutexAlloc() may use SQLite -** memory allocation for a fast or recursive mutex. -** -** ^SQLite will invoke the xMutexEnd() method when [sqlite3_shutdown()] is -** called, but only if the prior call to xMutexInit returned SQLITE_OK. -** If xMutexInit fails in any way, it is expected to clean up after itself -** prior to returning. -*/ -typedef struct sqlite3_mutex_methods sqlite3_mutex_methods; -struct sqlite3_mutex_methods { - int (*xMutexInit)(void); - int (*xMutexEnd)(void); - sqlite3_mutex *(*xMutexAlloc)(int); - void (*xMutexFree)(sqlite3_mutex *); - void (*xMutexEnter)(sqlite3_mutex *); - int (*xMutexTry)(sqlite3_mutex *); - void (*xMutexLeave)(sqlite3_mutex *); - int (*xMutexHeld)(sqlite3_mutex *); - int (*xMutexNotheld)(sqlite3_mutex *); -}; - -/* -** CAPI3REF: Mutex Verification Routines -** -** The sqlite3_mutex_held() and sqlite3_mutex_notheld() routines -** are intended for use inside assert() statements. ^The SQLite core -** never uses these routines except inside an assert() and applications -** are advised to follow the lead of the core. ^The SQLite core only -** provides implementations for these routines when it is compiled -** with the SQLITE_DEBUG flag. ^External mutex implementations -** are only required to provide these routines if SQLITE_DEBUG is -** defined and if NDEBUG is not defined. -** -** ^These routines should return true if the mutex in their argument -** is held or not held, respectively, by the calling thread. -** -** ^The implementation is not required to provided versions of these -** routines that actually work. If the implementation does not provide working -** versions of these routines, it should at least provide stubs that always -** return true so that one does not get spurious assertion failures. -** -** ^If the argument to sqlite3_mutex_held() is a NULL pointer then -** the routine should return 1. This seems counter-intuitive since -** clearly the mutex cannot be held if it does not exist. But -** the reason the mutex does not exist is because the build is not -** using mutexes. And we do not want the assert() containing the -** call to sqlite3_mutex_held() to fail, so a non-zero return is -** the appropriate thing to do. ^The sqlite3_mutex_notheld() -** interface should also return 1 when given a NULL pointer. -*/ -#ifndef NDEBUG -int sqlite3_mutex_held(sqlite3_mutex*); -int sqlite3_mutex_notheld(sqlite3_mutex*); -#endif - -/* -** CAPI3REF: Mutex Types -** -** The [sqlite3_mutex_alloc()] interface takes a single argument -** which is one of these integer constants. -** -** The set of static mutexes may change from one SQLite release to the -** next. Applications that override the built-in mutex logic must be -** prepared to accommodate additional static mutexes. -*/ -#define SQLITE_MUTEX_FAST 0 -#define SQLITE_MUTEX_RECURSIVE 1 -#define SQLITE_MUTEX_STATIC_MASTER 2 -#define SQLITE_MUTEX_STATIC_MEM 3 /* sqlite3_malloc() */ -#define SQLITE_MUTEX_STATIC_MEM2 4 /* NOT USED */ -#define SQLITE_MUTEX_STATIC_OPEN 4 /* sqlite3BtreeOpen() */ -#define SQLITE_MUTEX_STATIC_PRNG 5 /* sqlite3_random() */ -#define SQLITE_MUTEX_STATIC_LRU 6 /* lru page list */ -#define SQLITE_MUTEX_STATIC_LRU2 7 /* NOT USED */ -#define SQLITE_MUTEX_STATIC_PMEM 7 /* sqlite3PageMalloc() */ - -/* -** CAPI3REF: Retrieve the mutex for a database connection -** -** ^This interface returns a pointer the [sqlite3_mutex] object that -** serializes access to the [database connection] given in the argument -** when the [threading mode] is Serialized. -** ^If the [threading mode] is Single-thread or Multi-thread then this -** routine returns a NULL pointer. -*/ -sqlite3_mutex *sqlite3_db_mutex(sqlite3*); - -/* -** CAPI3REF: Low-Level Control Of Database Files -** -** ^The [sqlite3_file_control()] interface makes a direct call to the -** xFileControl method for the [sqlite3_io_methods] object associated -** with a particular database identified by the second argument. ^The -** name of the database is "main" for the main database or "temp" for the -** TEMP database, or the name that appears after the AS keyword for -** databases that are added using the [ATTACH] SQL command. -** ^A NULL pointer can be used in place of "main" to refer to the -** main database file. -** ^The third and fourth parameters to this routine -** are passed directly through to the second and third parameters of -** the xFileControl method. ^The return value of the xFileControl -** method becomes the return value of this routine. -** -** ^The SQLITE_FCNTL_FILE_POINTER value for the op parameter causes -** a pointer to the underlying [sqlite3_file] object to be written into -** the space pointed to by the 4th parameter. ^The SQLITE_FCNTL_FILE_POINTER -** case is a short-circuit path which does not actually invoke the -** underlying sqlite3_io_methods.xFileControl method. -** -** ^If the second parameter (zDbName) does not match the name of any -** open database file, then SQLITE_ERROR is returned. ^This error -** code is not remembered and will not be recalled by [sqlite3_errcode()] -** or [sqlite3_errmsg()]. The underlying xFileControl method might -** also return SQLITE_ERROR. There is no way to distinguish between -** an incorrect zDbName and an SQLITE_ERROR return from the underlying -** xFileControl method. -** -** See also: [SQLITE_FCNTL_LOCKSTATE] -*/ -int sqlite3_file_control(sqlite3*, const char *zDbName, int op, void*); - -/* -** CAPI3REF: Testing Interface -** -** ^The sqlite3_test_control() interface is used to read out internal -** state of SQLite and to inject faults into SQLite for testing -** purposes. ^The first parameter is an operation code that determines -** the number, meaning, and operation of all subsequent parameters. -** -** This interface is not for use by applications. It exists solely -** for verifying the correct operation of the SQLite library. Depending -** on how the SQLite library is compiled, this interface might not exist. -** -** The details of the operation codes, their meanings, the parameters -** they take, and what they do are all subject to change without notice. -** Unlike most of the SQLite API, this function is not guaranteed to -** operate consistently from one release to the next. -*/ -int sqlite3_test_control(int op, ...); - -/* -** CAPI3REF: Testing Interface Operation Codes -** -** These constants are the valid operation code parameters used -** as the first argument to [sqlite3_test_control()]. -** -** These parameters and their meanings are subject to change -** without notice. These values are for testing purposes only. -** Applications should not use any of these parameters or the -** [sqlite3_test_control()] interface. -*/ -#define SQLITE_TESTCTRL_FIRST 5 -#define SQLITE_TESTCTRL_PRNG_SAVE 5 -#define SQLITE_TESTCTRL_PRNG_RESTORE 6 -#define SQLITE_TESTCTRL_PRNG_RESET 7 -#define SQLITE_TESTCTRL_BITVEC_TEST 8 -#define SQLITE_TESTCTRL_FAULT_INSTALL 9 -#define SQLITE_TESTCTRL_BENIGN_MALLOC_HOOKS 10 -#define SQLITE_TESTCTRL_PENDING_BYTE 11 -#define SQLITE_TESTCTRL_ASSERT 12 -#define SQLITE_TESTCTRL_ALWAYS 13 -#define SQLITE_TESTCTRL_RESERVE 14 -#define SQLITE_TESTCTRL_OPTIMIZATIONS 15 -#define SQLITE_TESTCTRL_ISKEYWORD 16 -#define SQLITE_TESTCTRL_PGHDRSZ 17 -#define SQLITE_TESTCTRL_SCRATCHMALLOC 18 -#define SQLITE_TESTCTRL_LOCALTIME_FAULT 19 -#define SQLITE_TESTCTRL_LAST 19 - -/* -** CAPI3REF: SQLite Runtime Status -** -** ^This interface is used to retrieve runtime status information -** about the performance of SQLite, and optionally to reset various -** highwater marks. ^The first argument is an integer code for -** the specific parameter to measure. ^(Recognized integer codes -** are of the form [status parameters | SQLITE_STATUS_...].)^ -** ^The current value of the parameter is returned into *pCurrent. -** ^The highest recorded value is returned in *pHighwater. ^If the -** resetFlag is true, then the highest record value is reset after -** *pHighwater is written. ^(Some parameters do not record the highest -** value. For those parameters -** nothing is written into *pHighwater and the resetFlag is ignored.)^ -** ^(Other parameters record only the highwater mark and not the current -** value. For these latter parameters nothing is written into *pCurrent.)^ -** -** ^The sqlite3_status() routine returns SQLITE_OK on success and a -** non-zero [error code] on failure. -** -** This routine is threadsafe but is not atomic. This routine can be -** called while other threads are running the same or different SQLite -** interfaces. However the values returned in *pCurrent and -** *pHighwater reflect the status of SQLite at different points in time -** and it is possible that another thread might change the parameter -** in between the times when *pCurrent and *pHighwater are written. -** -** See also: [sqlite3_db_status()] -*/ -int sqlite3_status(int op, int *pCurrent, int *pHighwater, int resetFlag); - - -/* -** CAPI3REF: Status Parameters -** KEYWORDS: {status parameters} -** -** These integer constants designate various run-time status parameters -** that can be returned by [sqlite3_status()]. -** -**
    -** [[SQLITE_STATUS_MEMORY_USED]] ^(
    SQLITE_STATUS_MEMORY_USED
    -**
    This parameter is the current amount of memory checked out -** using [sqlite3_malloc()], either directly or indirectly. The -** figure includes calls made to [sqlite3_malloc()] by the application -** and internal memory usage by the SQLite library. Scratch memory -** controlled by [SQLITE_CONFIG_SCRATCH] and auxiliary page-cache -** memory controlled by [SQLITE_CONFIG_PAGECACHE] is not included in -** this parameter. The amount returned is the sum of the allocation -** sizes as reported by the xSize method in [sqlite3_mem_methods].
    )^ -** -** [[SQLITE_STATUS_MALLOC_SIZE]] ^(
    SQLITE_STATUS_MALLOC_SIZE
    -**
    This parameter records the largest memory allocation request -** handed to [sqlite3_malloc()] or [sqlite3_realloc()] (or their -** internal equivalents). Only the value returned in the -** *pHighwater parameter to [sqlite3_status()] is of interest. -** The value written into the *pCurrent parameter is undefined.
    )^ -** -** [[SQLITE_STATUS_MALLOC_COUNT]] ^(
    SQLITE_STATUS_MALLOC_COUNT
    -**
    This parameter records the number of separate memory allocations -** currently checked out.
    )^ -** -** [[SQLITE_STATUS_PAGECACHE_USED]] ^(
    SQLITE_STATUS_PAGECACHE_USED
    -**
    This parameter returns the number of pages used out of the -** [pagecache memory allocator] that was configured using -** [SQLITE_CONFIG_PAGECACHE]. The -** value returned is in pages, not in bytes.
    )^ -** -** [[SQLITE_STATUS_PAGECACHE_OVERFLOW]] -** ^(
    SQLITE_STATUS_PAGECACHE_OVERFLOW
    -**
    This parameter returns the number of bytes of page cache -** allocation which could not be satisfied by the [SQLITE_CONFIG_PAGECACHE] -** buffer and where forced to overflow to [sqlite3_malloc()]. The -** returned value includes allocations that overflowed because they -** where too large (they were larger than the "sz" parameter to -** [SQLITE_CONFIG_PAGECACHE]) and allocations that overflowed because -** no space was left in the page cache.
    )^ -** -** [[SQLITE_STATUS_PAGECACHE_SIZE]] ^(
    SQLITE_STATUS_PAGECACHE_SIZE
    -**
    This parameter records the largest memory allocation request -** handed to [pagecache memory allocator]. Only the value returned in the -** *pHighwater parameter to [sqlite3_status()] is of interest. -** The value written into the *pCurrent parameter is undefined.
    )^ -** -** [[SQLITE_STATUS_SCRATCH_USED]] ^(
    SQLITE_STATUS_SCRATCH_USED
    -**
    This parameter returns the number of allocations used out of the -** [scratch memory allocator] configured using -** [SQLITE_CONFIG_SCRATCH]. The value returned is in allocations, not -** in bytes. Since a single thread may only have one scratch allocation -** outstanding at time, this parameter also reports the number of threads -** using scratch memory at the same time.
    )^ -** -** [[SQLITE_STATUS_SCRATCH_OVERFLOW]] ^(
    SQLITE_STATUS_SCRATCH_OVERFLOW
    -**
    This parameter returns the number of bytes of scratch memory -** allocation which could not be satisfied by the [SQLITE_CONFIG_SCRATCH] -** buffer and where forced to overflow to [sqlite3_malloc()]. The values -** returned include overflows because the requested allocation was too -** larger (that is, because the requested allocation was larger than the -** "sz" parameter to [SQLITE_CONFIG_SCRATCH]) and because no scratch buffer -** slots were available. -**
    )^ -** -** [[SQLITE_STATUS_SCRATCH_SIZE]] ^(
    SQLITE_STATUS_SCRATCH_SIZE
    -**
    This parameter records the largest memory allocation request -** handed to [scratch memory allocator]. Only the value returned in the -** *pHighwater parameter to [sqlite3_status()] is of interest. -** The value written into the *pCurrent parameter is undefined.
    )^ -** -** [[SQLITE_STATUS_PARSER_STACK]] ^(
    SQLITE_STATUS_PARSER_STACK
    -**
    This parameter records the deepest parser stack. It is only -** meaningful if SQLite is compiled with [YYTRACKMAXSTACKDEPTH].
    )^ -**
    -** -** New status parameters may be added from time to time. -*/ -#define SQLITE_STATUS_MEMORY_USED 0 -#define SQLITE_STATUS_PAGECACHE_USED 1 -#define SQLITE_STATUS_PAGECACHE_OVERFLOW 2 -#define SQLITE_STATUS_SCRATCH_USED 3 -#define SQLITE_STATUS_SCRATCH_OVERFLOW 4 -#define SQLITE_STATUS_MALLOC_SIZE 5 -#define SQLITE_STATUS_PARSER_STACK 6 -#define SQLITE_STATUS_PAGECACHE_SIZE 7 -#define SQLITE_STATUS_SCRATCH_SIZE 8 -#define SQLITE_STATUS_MALLOC_COUNT 9 - -/* -** CAPI3REF: Database Connection Status -** -** ^This interface is used to retrieve runtime status information -** about a single [database connection]. ^The first argument is the -** database connection object to be interrogated. ^The second argument -** is an integer constant, taken from the set of -** [SQLITE_DBSTATUS options], that -** determines the parameter to interrogate. The set of -** [SQLITE_DBSTATUS options] is likely -** to grow in future releases of SQLite. -** -** ^The current value of the requested parameter is written into *pCur -** and the highest instantaneous value is written into *pHiwtr. ^If -** the resetFlg is true, then the highest instantaneous value is -** reset back down to the current value. -** -** ^The sqlite3_db_status() routine returns SQLITE_OK on success and a -** non-zero [error code] on failure. -** -** See also: [sqlite3_status()] and [sqlite3_stmt_status()]. -*/ -int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int resetFlg); - -/* -** CAPI3REF: Status Parameters for database connections -** KEYWORDS: {SQLITE_DBSTATUS options} -** -** These constants are the available integer "verbs" that can be passed as -** the second argument to the [sqlite3_db_status()] interface. -** -** New verbs may be added in future releases of SQLite. Existing verbs -** might be discontinued. Applications should check the return code from -** [sqlite3_db_status()] to make sure that the call worked. -** The [sqlite3_db_status()] interface will return a non-zero error code -** if a discontinued or unsupported verb is invoked. -** -**
    -** [[SQLITE_DBSTATUS_LOOKASIDE_USED]] ^(
    SQLITE_DBSTATUS_LOOKASIDE_USED
    -**
    This parameter returns the number of lookaside memory slots currently -** checked out.
    )^ -** -** [[SQLITE_DBSTATUS_LOOKASIDE_HIT]] ^(
    SQLITE_DBSTATUS_LOOKASIDE_HIT
    -**
    This parameter returns the number malloc attempts that were -** satisfied using lookaside memory. Only the high-water value is meaningful; -** the current value is always zero.)^ -** -** [[SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE]] -** ^(
    SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE
    -**
    This parameter returns the number malloc attempts that might have -** been satisfied using lookaside memory but failed due to the amount of -** memory requested being larger than the lookaside slot size. -** Only the high-water value is meaningful; -** the current value is always zero.)^ -** -** [[SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL]] -** ^(
    SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL
    -**
    This parameter returns the number malloc attempts that might have -** been satisfied using lookaside memory but failed due to all lookaside -** memory already being in use. -** Only the high-water value is meaningful; -** the current value is always zero.)^ -** -** [[SQLITE_DBSTATUS_CACHE_USED]] ^(
    SQLITE_DBSTATUS_CACHE_USED
    -**
    This parameter returns the approximate number of of bytes of heap -** memory used by all pager caches associated with the database connection.)^ -** ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_USED is always 0. -** -** [[SQLITE_DBSTATUS_SCHEMA_USED]] ^(
    SQLITE_DBSTATUS_SCHEMA_USED
    -**
    This parameter returns the approximate number of of bytes of heap -** memory used to store the schema for all databases associated -** with the connection - main, temp, and any [ATTACH]-ed databases.)^ -** ^The full amount of memory used by the schemas is reported, even if the -** schema memory is shared with other database connections due to -** [shared cache mode] being enabled. -** ^The highwater mark associated with SQLITE_DBSTATUS_SCHEMA_USED is always 0. -** -** [[SQLITE_DBSTATUS_STMT_USED]] ^(
    SQLITE_DBSTATUS_STMT_USED
    -**
    This parameter returns the approximate number of of bytes of heap -** and lookaside memory used by all prepared statements associated with -** the database connection.)^ -** ^The highwater mark associated with SQLITE_DBSTATUS_STMT_USED is always 0. -**
    -** -** [[SQLITE_DBSTATUS_CACHE_HIT]] ^(
    SQLITE_DBSTATUS_CACHE_HIT
    -**
    This parameter returns the number of pager cache hits that have -** occurred.)^ ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_HIT -** is always 0. -**
    -** -** [[SQLITE_DBSTATUS_CACHE_MISS]] ^(
    SQLITE_DBSTATUS_CACHE_MISS
    -**
    This parameter returns the number of pager cache misses that have -** occurred.)^ ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_MISS -** is always 0. -**
    -**
    -*/ -#define SQLITE_DBSTATUS_LOOKASIDE_USED 0 -#define SQLITE_DBSTATUS_CACHE_USED 1 -#define SQLITE_DBSTATUS_SCHEMA_USED 2 -#define SQLITE_DBSTATUS_STMT_USED 3 -#define SQLITE_DBSTATUS_LOOKASIDE_HIT 4 -#define SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE 5 -#define SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL 6 -#define SQLITE_DBSTATUS_CACHE_HIT 7 -#define SQLITE_DBSTATUS_CACHE_MISS 8 -#define SQLITE_DBSTATUS_MAX 8 /* Largest defined DBSTATUS */ - - -/* -** CAPI3REF: Prepared Statement Status -** -** ^(Each prepared statement maintains various -** [SQLITE_STMTSTATUS counters] that measure the number -** of times it has performed specific operations.)^ These counters can -** be used to monitor the performance characteristics of the prepared -** statements. For example, if the number of table steps greatly exceeds -** the number of table searches or result rows, that would tend to indicate -** that the prepared statement is using a full table scan rather than -** an index. -** -** ^(This interface is used to retrieve and reset counter values from -** a [prepared statement]. The first argument is the prepared statement -** object to be interrogated. The second argument -** is an integer code for a specific [SQLITE_STMTSTATUS counter] -** to be interrogated.)^ -** ^The current value of the requested counter is returned. -** ^If the resetFlg is true, then the counter is reset to zero after this -** interface call returns. -** -** See also: [sqlite3_status()] and [sqlite3_db_status()]. -*/ -int sqlite3_stmt_status(sqlite3_stmt*, int op,int resetFlg); - -/* -** CAPI3REF: Status Parameters for prepared statements -** KEYWORDS: {SQLITE_STMTSTATUS counter} {SQLITE_STMTSTATUS counters} -** -** These preprocessor macros define integer codes that name counter -** values associated with the [sqlite3_stmt_status()] interface. -** The meanings of the various counters are as follows: -** -**
    -** [[SQLITE_STMTSTATUS_FULLSCAN_STEP]]
    SQLITE_STMTSTATUS_FULLSCAN_STEP
    -**
    ^This is the number of times that SQLite has stepped forward in -** a table as part of a full table scan. Large numbers for this counter -** may indicate opportunities for performance improvement through -** careful use of indices.
    -** -** [[SQLITE_STMTSTATUS_SORT]]
    SQLITE_STMTSTATUS_SORT
    -**
    ^This is the number of sort operations that have occurred. -** A non-zero value in this counter may indicate an opportunity to -** improvement performance through careful use of indices.
    -** -** [[SQLITE_STMTSTATUS_AUTOINDEX]]
    SQLITE_STMTSTATUS_AUTOINDEX
    -**
    ^This is the number of rows inserted into transient indices that -** were created automatically in order to help joins run faster. -** A non-zero value in this counter may indicate an opportunity to -** improvement performance by adding permanent indices that do not -** need to be reinitialized each time the statement is run.
    -**
    -*/ -#define SQLITE_STMTSTATUS_FULLSCAN_STEP 1 -#define SQLITE_STMTSTATUS_SORT 2 -#define SQLITE_STMTSTATUS_AUTOINDEX 3 - -/* -** CAPI3REF: Custom Page Cache Object -** -** The sqlite3_pcache type is opaque. It is implemented by -** the pluggable module. The SQLite core has no knowledge of -** its size or internal structure and never deals with the -** sqlite3_pcache object except by holding and passing pointers -** to the object. -** -** See [sqlite3_pcache_methods] for additional information. -*/ -typedef struct sqlite3_pcache sqlite3_pcache; - -/* -** CAPI3REF: Application Defined Page Cache. -** KEYWORDS: {page cache} -** -** ^(The [sqlite3_config]([SQLITE_CONFIG_PCACHE], ...) interface can -** register an alternative page cache implementation by passing in an -** instance of the sqlite3_pcache_methods structure.)^ -** In many applications, most of the heap memory allocated by -** SQLite is used for the page cache. -** By implementing a -** custom page cache using this API, an application can better control -** the amount of memory consumed by SQLite, the way in which -** that memory is allocated and released, and the policies used to -** determine exactly which parts of a database file are cached and for -** how long. -** -** The alternative page cache mechanism is an -** extreme measure that is only needed by the most demanding applications. -** The built-in page cache is recommended for most uses. -** -** ^(The contents of the sqlite3_pcache_methods structure are copied to an -** internal buffer by SQLite within the call to [sqlite3_config]. Hence -** the application may discard the parameter after the call to -** [sqlite3_config()] returns.)^ -** -** [[the xInit() page cache method]] -** ^(The xInit() method is called once for each effective -** call to [sqlite3_initialize()])^ -** (usually only once during the lifetime of the process). ^(The xInit() -** method is passed a copy of the sqlite3_pcache_methods.pArg value.)^ -** The intent of the xInit() method is to set up global data structures -** required by the custom page cache implementation. -** ^(If the xInit() method is NULL, then the -** built-in default page cache is used instead of the application defined -** page cache.)^ -** -** [[the xShutdown() page cache method]] -** ^The xShutdown() method is called by [sqlite3_shutdown()]. -** It can be used to clean up -** any outstanding resources before process shutdown, if required. -** ^The xShutdown() method may be NULL. -** -** ^SQLite automatically serializes calls to the xInit method, -** so the xInit method need not be threadsafe. ^The -** xShutdown method is only called from [sqlite3_shutdown()] so it does -** not need to be threadsafe either. All other methods must be threadsafe -** in multithreaded applications. -** -** ^SQLite will never invoke xInit() more than once without an intervening -** call to xShutdown(). -** -** [[the xCreate() page cache methods]] -** ^SQLite invokes the xCreate() method to construct a new cache instance. -** SQLite will typically create one cache instance for each open database file, -** though this is not guaranteed. ^The -** first parameter, szPage, is the size in bytes of the pages that must -** be allocated by the cache. ^szPage will not be a power of two. ^szPage -** will the page size of the database file that is to be cached plus an -** increment (here called "R") of less than 250. SQLite will use the -** extra R bytes on each page to store metadata about the underlying -** database page on disk. The value of R depends -** on the SQLite version, the target platform, and how SQLite was compiled. -** ^(R is constant for a particular build of SQLite. Except, there are two -** distinct values of R when SQLite is compiled with the proprietary -** ZIPVFS extension.)^ ^The second argument to -** xCreate(), bPurgeable, is true if the cache being created will -** be used to cache database pages of a file stored on disk, or -** false if it is used for an in-memory database. The cache implementation -** does not have to do anything special based with the value of bPurgeable; -** it is purely advisory. ^On a cache where bPurgeable is false, SQLite will -** never invoke xUnpin() except to deliberately delete a page. -** ^In other words, calls to xUnpin() on a cache with bPurgeable set to -** false will always have the "discard" flag set to true. -** ^Hence, a cache created with bPurgeable false will -** never contain any unpinned pages. -** -** [[the xCachesize() page cache method]] -** ^(The xCachesize() method may be called at any time by SQLite to set the -** suggested maximum cache-size (number of pages stored by) the cache -** instance passed as the first argument. This is the value configured using -** the SQLite "[PRAGMA cache_size]" command.)^ As with the bPurgeable -** parameter, the implementation is not required to do anything with this -** value; it is advisory only. -** -** [[the xPagecount() page cache methods]] -** The xPagecount() method must return the number of pages currently -** stored in the cache, both pinned and unpinned. -** -** [[the xFetch() page cache methods]] -** The xFetch() method locates a page in the cache and returns a pointer to -** the page, or a NULL pointer. -** A "page", in this context, means a buffer of szPage bytes aligned at an -** 8-byte boundary. The page to be fetched is determined by the key. ^The -** minimum key value is 1. After it has been retrieved using xFetch, the page -** is considered to be "pinned". -** -** If the requested page is already in the page cache, then the page cache -** implementation must return a pointer to the page buffer with its content -** intact. If the requested page is not already in the cache, then the -** cache implementation should use the value of the createFlag -** parameter to help it determined what action to take: -** -** -**
    createFlag Behaviour when page is not already in cache -**
    0 Do not allocate a new page. Return NULL. -**
    1 Allocate a new page if it easy and convenient to do so. -** Otherwise return NULL. -**
    2 Make every effort to allocate a new page. Only return -** NULL if allocating a new page is effectively impossible. -**
    -** -** ^(SQLite will normally invoke xFetch() with a createFlag of 0 or 1. SQLite -** will only use a createFlag of 2 after a prior call with a createFlag of 1 -** failed.)^ In between the to xFetch() calls, SQLite may -** attempt to unpin one or more cache pages by spilling the content of -** pinned pages to disk and synching the operating system disk cache. -** -** [[the xUnpin() page cache method]] -** ^xUnpin() is called by SQLite with a pointer to a currently pinned page -** as its second argument. If the third parameter, discard, is non-zero, -** then the page must be evicted from the cache. -** ^If the discard parameter is -** zero, then the page may be discarded or retained at the discretion of -** page cache implementation. ^The page cache implementation -** may choose to evict unpinned pages at any time. -** -** The cache must not perform any reference counting. A single -** call to xUnpin() unpins the page regardless of the number of prior calls -** to xFetch(). -** -** [[the xRekey() page cache methods]] -** The xRekey() method is used to change the key value associated with the -** page passed as the second argument. If the cache -** previously contains an entry associated with newKey, it must be -** discarded. ^Any prior cache entry associated with newKey is guaranteed not -** to be pinned. -** -** When SQLite calls the xTruncate() method, the cache must discard all -** existing cache entries with page numbers (keys) greater than or equal -** to the value of the iLimit parameter passed to xTruncate(). If any -** of these pages are pinned, they are implicitly unpinned, meaning that -** they can be safely discarded. -** -** [[the xDestroy() page cache method]] -** ^The xDestroy() method is used to delete a cache allocated by xCreate(). -** All resources associated with the specified cache should be freed. ^After -** calling the xDestroy() method, SQLite considers the [sqlite3_pcache*] -** handle invalid, and will not use it with any other sqlite3_pcache_methods -** functions. -*/ -typedef struct sqlite3_pcache_methods sqlite3_pcache_methods; -struct sqlite3_pcache_methods { - void *pArg; - int (*xInit)(void*); - void (*xShutdown)(void*); - sqlite3_pcache *(*xCreate)(int szPage, int bPurgeable); - void (*xCachesize)(sqlite3_pcache*, int nCachesize); - int (*xPagecount)(sqlite3_pcache*); - void *(*xFetch)(sqlite3_pcache*, unsigned key, int createFlag); - void (*xUnpin)(sqlite3_pcache*, void*, int discard); - void (*xRekey)(sqlite3_pcache*, void*, unsigned oldKey, unsigned newKey); - void (*xTruncate)(sqlite3_pcache*, unsigned iLimit); - void (*xDestroy)(sqlite3_pcache*); -}; - -/* -** CAPI3REF: Online Backup Object -** -** The sqlite3_backup object records state information about an ongoing -** online backup operation. ^The sqlite3_backup object is created by -** a call to [sqlite3_backup_init()] and is destroyed by a call to -** [sqlite3_backup_finish()]. -** -** See Also: [Using the SQLite Online Backup API] -*/ -typedef struct sqlite3_backup sqlite3_backup; - -/* -** CAPI3REF: Online Backup API. -** -** The backup API copies the content of one database into another. -** It is useful either for creating backups of databases or -** for copying in-memory databases to or from persistent files. -** -** See Also: [Using the SQLite Online Backup API] -** -** ^SQLite holds a write transaction open on the destination database file -** for the duration of the backup operation. -** ^The source database is read-locked only while it is being read; -** it is not locked continuously for the entire backup operation. -** ^Thus, the backup may be performed on a live source database without -** preventing other database connections from -** reading or writing to the source database while the backup is underway. -** -** ^(To perform a backup operation: -**
      -**
    1. sqlite3_backup_init() is called once to initialize the -** backup, -**
    2. sqlite3_backup_step() is called one or more times to transfer -** the data between the two databases, and finally -**
    3. sqlite3_backup_finish() is called to release all resources -** associated with the backup operation. -**
    )^ -** There should be exactly one call to sqlite3_backup_finish() for each -** successful call to sqlite3_backup_init(). -** -** [[sqlite3_backup_init()]] sqlite3_backup_init() -** -** ^The D and N arguments to sqlite3_backup_init(D,N,S,M) are the -** [database connection] associated with the destination database -** and the database name, respectively. -** ^The database name is "main" for the main database, "temp" for the -** temporary database, or the name specified after the AS keyword in -** an [ATTACH] statement for an attached database. -** ^The S and M arguments passed to -** sqlite3_backup_init(D,N,S,M) identify the [database connection] -** and database name of the source database, respectively. -** ^The source and destination [database connections] (parameters S and D) -** must be different or else sqlite3_backup_init(D,N,S,M) will fail with -** an error. -** -** ^If an error occurs within sqlite3_backup_init(D,N,S,M), then NULL is -** returned and an error code and error message are stored in the -** destination [database connection] D. -** ^The error code and message for the failed call to sqlite3_backup_init() -** can be retrieved using the [sqlite3_errcode()], [sqlite3_errmsg()], and/or -** [sqlite3_errmsg16()] functions. -** ^A successful call to sqlite3_backup_init() returns a pointer to an -** [sqlite3_backup] object. -** ^The [sqlite3_backup] object may be used with the sqlite3_backup_step() and -** sqlite3_backup_finish() functions to perform the specified backup -** operation. -** -** [[sqlite3_backup_step()]] sqlite3_backup_step() -** -** ^Function sqlite3_backup_step(B,N) will copy up to N pages between -** the source and destination databases specified by [sqlite3_backup] object B. -** ^If N is negative, all remaining source pages are copied. -** ^If sqlite3_backup_step(B,N) successfully copies N pages and there -** are still more pages to be copied, then the function returns [SQLITE_OK]. -** ^If sqlite3_backup_step(B,N) successfully finishes copying all pages -** from source to destination, then it returns [SQLITE_DONE]. -** ^If an error occurs while running sqlite3_backup_step(B,N), -** then an [error code] is returned. ^As well as [SQLITE_OK] and -** [SQLITE_DONE], a call to sqlite3_backup_step() may return [SQLITE_READONLY], -** [SQLITE_NOMEM], [SQLITE_BUSY], [SQLITE_LOCKED], or an -** [SQLITE_IOERR_ACCESS | SQLITE_IOERR_XXX] extended error code. -** -** ^(The sqlite3_backup_step() might return [SQLITE_READONLY] if -**
      -**
    1. the destination database was opened read-only, or -**
    2. the destination database is using write-ahead-log journaling -** and the destination and source page sizes differ, or -**
    3. the destination database is an in-memory database and the -** destination and source page sizes differ. -**
    )^ -** -** ^If sqlite3_backup_step() cannot obtain a required file-system lock, then -** the [sqlite3_busy_handler | busy-handler function] -** is invoked (if one is specified). ^If the -** busy-handler returns non-zero before the lock is available, then -** [SQLITE_BUSY] is returned to the caller. ^In this case the call to -** sqlite3_backup_step() can be retried later. ^If the source -** [database connection] -** is being used to write to the source database when sqlite3_backup_step() -** is called, then [SQLITE_LOCKED] is returned immediately. ^Again, in this -** case the call to sqlite3_backup_step() can be retried later on. ^(If -** [SQLITE_IOERR_ACCESS | SQLITE_IOERR_XXX], [SQLITE_NOMEM], or -** [SQLITE_READONLY] is returned, then -** there is no point in retrying the call to sqlite3_backup_step(). These -** errors are considered fatal.)^ The application must accept -** that the backup operation has failed and pass the backup operation handle -** to the sqlite3_backup_finish() to release associated resources. -** -** ^The first call to sqlite3_backup_step() obtains an exclusive lock -** on the destination file. ^The exclusive lock is not released until either -** sqlite3_backup_finish() is called or the backup operation is complete -** and sqlite3_backup_step() returns [SQLITE_DONE]. ^Every call to -** sqlite3_backup_step() obtains a [shared lock] on the source database that -** lasts for the duration of the sqlite3_backup_step() call. -** ^Because the source database is not locked between calls to -** sqlite3_backup_step(), the source database may be modified mid-way -** through the backup process. ^If the source database is modified by an -** external process or via a database connection other than the one being -** used by the backup operation, then the backup will be automatically -** restarted by the next call to sqlite3_backup_step(). ^If the source -** database is modified by the using the same database connection as is used -** by the backup operation, then the backup database is automatically -** updated at the same time. -** -** [[sqlite3_backup_finish()]] sqlite3_backup_finish() -** -** When sqlite3_backup_step() has returned [SQLITE_DONE], or when the -** application wishes to abandon the backup operation, the application -** should destroy the [sqlite3_backup] by passing it to sqlite3_backup_finish(). -** ^The sqlite3_backup_finish() interfaces releases all -** resources associated with the [sqlite3_backup] object. -** ^If sqlite3_backup_step() has not yet returned [SQLITE_DONE], then any -** active write-transaction on the destination database is rolled back. -** The [sqlite3_backup] object is invalid -** and may not be used following a call to sqlite3_backup_finish(). -** -** ^The value returned by sqlite3_backup_finish is [SQLITE_OK] if no -** sqlite3_backup_step() errors occurred, regardless or whether or not -** sqlite3_backup_step() completed. -** ^If an out-of-memory condition or IO error occurred during any prior -** sqlite3_backup_step() call on the same [sqlite3_backup] object, then -** sqlite3_backup_finish() returns the corresponding [error code]. -** -** ^A return of [SQLITE_BUSY] or [SQLITE_LOCKED] from sqlite3_backup_step() -** is not a permanent error and does not affect the return value of -** sqlite3_backup_finish(). -** -** [[sqlite3_backup__remaining()]] [[sqlite3_backup_pagecount()]] -** sqlite3_backup_remaining() and sqlite3_backup_pagecount() -** -** ^Each call to sqlite3_backup_step() sets two values inside -** the [sqlite3_backup] object: the number of pages still to be backed -** up and the total number of pages in the source database file. -** The sqlite3_backup_remaining() and sqlite3_backup_pagecount() interfaces -** retrieve these two values, respectively. -** -** ^The values returned by these functions are only updated by -** sqlite3_backup_step(). ^If the source database is modified during a backup -** operation, then the values are not updated to account for any extra -** pages that need to be updated or the size of the source database file -** changing. -** -** Concurrent Usage of Database Handles -** -** ^The source [database connection] may be used by the application for other -** purposes while a backup operation is underway or being initialized. -** ^If SQLite is compiled and configured to support threadsafe database -** connections, then the source database connection may be used concurrently -** from within other threads. -** -** However, the application must guarantee that the destination -** [database connection] is not passed to any other API (by any thread) after -** sqlite3_backup_init() is called and before the corresponding call to -** sqlite3_backup_finish(). SQLite does not currently check to see -** if the application incorrectly accesses the destination [database connection] -** and so no error code is reported, but the operations may malfunction -** nevertheless. Use of the destination database connection while a -** backup is in progress might also also cause a mutex deadlock. -** -** If running in [shared cache mode], the application must -** guarantee that the shared cache used by the destination database -** is not accessed while the backup is running. In practice this means -** that the application must guarantee that the disk file being -** backed up to is not accessed by any connection within the process, -** not just the specific connection that was passed to sqlite3_backup_init(). -** -** The [sqlite3_backup] object itself is partially threadsafe. Multiple -** threads may safely make multiple concurrent calls to sqlite3_backup_step(). -** However, the sqlite3_backup_remaining() and sqlite3_backup_pagecount() -** APIs are not strictly speaking threadsafe. If they are invoked at the -** same time as another thread is invoking sqlite3_backup_step() it is -** possible that they return invalid values. -*/ -sqlite3_backup *sqlite3_backup_init( - sqlite3 *pDest, /* Destination database handle */ - const char *zDestName, /* Destination database name */ - sqlite3 *pSource, /* Source database handle */ - const char *zSourceName /* Source database name */ -); -int sqlite3_backup_step(sqlite3_backup *p, int nPage); -int sqlite3_backup_finish(sqlite3_backup *p); -int sqlite3_backup_remaining(sqlite3_backup *p); -int sqlite3_backup_pagecount(sqlite3_backup *p); - -/* -** CAPI3REF: Unlock Notification -** -** ^When running in shared-cache mode, a database operation may fail with -** an [SQLITE_LOCKED] error if the required locks on the shared-cache or -** individual tables within the shared-cache cannot be obtained. See -** [SQLite Shared-Cache Mode] for a description of shared-cache locking. -** ^This API may be used to register a callback that SQLite will invoke -** when the connection currently holding the required lock relinquishes it. -** ^This API is only available if the library was compiled with the -** [SQLITE_ENABLE_UNLOCK_NOTIFY] C-preprocessor symbol defined. -** -** See Also: [Using the SQLite Unlock Notification Feature]. -** -** ^Shared-cache locks are released when a database connection concludes -** its current transaction, either by committing it or rolling it back. -** -** ^When a connection (known as the blocked connection) fails to obtain a -** shared-cache lock and SQLITE_LOCKED is returned to the caller, the -** identity of the database connection (the blocking connection) that -** has locked the required resource is stored internally. ^After an -** application receives an SQLITE_LOCKED error, it may call the -** sqlite3_unlock_notify() method with the blocked connection handle as -** the first argument to register for a callback that will be invoked -** when the blocking connections current transaction is concluded. ^The -** callback is invoked from within the [sqlite3_step] or [sqlite3_close] -** call that concludes the blocking connections transaction. -** -** ^(If sqlite3_unlock_notify() is called in a multi-threaded application, -** there is a chance that the blocking connection will have already -** concluded its transaction by the time sqlite3_unlock_notify() is invoked. -** If this happens, then the specified callback is invoked immediately, -** from within the call to sqlite3_unlock_notify().)^ -** -** ^If the blocked connection is attempting to obtain a write-lock on a -** shared-cache table, and more than one other connection currently holds -** a read-lock on the same table, then SQLite arbitrarily selects one of -** the other connections to use as the blocking connection. -** -** ^(There may be at most one unlock-notify callback registered by a -** blocked connection. If sqlite3_unlock_notify() is called when the -** blocked connection already has a registered unlock-notify callback, -** then the new callback replaces the old.)^ ^If sqlite3_unlock_notify() is -** called with a NULL pointer as its second argument, then any existing -** unlock-notify callback is canceled. ^The blocked connections -** unlock-notify callback may also be canceled by closing the blocked -** connection using [sqlite3_close()]. -** -** The unlock-notify callback is not reentrant. If an application invokes -** any sqlite3_xxx API functions from within an unlock-notify callback, a -** crash or deadlock may be the result. -** -** ^Unless deadlock is detected (see below), sqlite3_unlock_notify() always -** returns SQLITE_OK. -** -** Callback Invocation Details -** -** When an unlock-notify callback is registered, the application provides a -** single void* pointer that is passed to the callback when it is invoked. -** However, the signature of the callback function allows SQLite to pass -** it an array of void* context pointers. The first argument passed to -** an unlock-notify callback is a pointer to an array of void* pointers, -** and the second is the number of entries in the array. -** -** When a blocking connections transaction is concluded, there may be -** more than one blocked connection that has registered for an unlock-notify -** callback. ^If two or more such blocked connections have specified the -** same callback function, then instead of invoking the callback function -** multiple times, it is invoked once with the set of void* context pointers -** specified by the blocked connections bundled together into an array. -** This gives the application an opportunity to prioritize any actions -** related to the set of unblocked database connections. -** -** Deadlock Detection -** -** Assuming that after registering for an unlock-notify callback a -** database waits for the callback to be issued before taking any further -** action (a reasonable assumption), then using this API may cause the -** application to deadlock. For example, if connection X is waiting for -** connection Y's transaction to be concluded, and similarly connection -** Y is waiting on connection X's transaction, then neither connection -** will proceed and the system may remain deadlocked indefinitely. -** -** To avoid this scenario, the sqlite3_unlock_notify() performs deadlock -** detection. ^If a given call to sqlite3_unlock_notify() would put the -** system in a deadlocked state, then SQLITE_LOCKED is returned and no -** unlock-notify callback is registered. The system is said to be in -** a deadlocked state if connection A has registered for an unlock-notify -** callback on the conclusion of connection B's transaction, and connection -** B has itself registered for an unlock-notify callback when connection -** A's transaction is concluded. ^Indirect deadlock is also detected, so -** the system is also considered to be deadlocked if connection B has -** registered for an unlock-notify callback on the conclusion of connection -** C's transaction, where connection C is waiting on connection A. ^Any -** number of levels of indirection are allowed. -** -** The "DROP TABLE" Exception -** -** When a call to [sqlite3_step()] returns SQLITE_LOCKED, it is almost -** always appropriate to call sqlite3_unlock_notify(). There is however, -** one exception. When executing a "DROP TABLE" or "DROP INDEX" statement, -** SQLite checks if there are any currently executing SELECT statements -** that belong to the same connection. If there are, SQLITE_LOCKED is -** returned. In this case there is no "blocking connection", so invoking -** sqlite3_unlock_notify() results in the unlock-notify callback being -** invoked immediately. If the application then re-attempts the "DROP TABLE" -** or "DROP INDEX" query, an infinite loop might be the result. -** -** One way around this problem is to check the extended error code returned -** by an sqlite3_step() call. ^(If there is a blocking connection, then the -** extended error code is set to SQLITE_LOCKED_SHAREDCACHE. Otherwise, in -** the special "DROP TABLE/INDEX" case, the extended error code is just -** SQLITE_LOCKED.)^ -*/ -int sqlite3_unlock_notify( - sqlite3 *pBlocked, /* Waiting connection */ - void (*xNotify)(void **apArg, int nArg), /* Callback function to invoke */ - void *pNotifyArg /* Argument to pass to xNotify */ -); - - -/* -** CAPI3REF: String Comparison -** -** ^The [sqlite3_strnicmp()] API allows applications and extensions to -** compare the contents of two buffers containing UTF-8 strings in a -** case-independent fashion, using the same definition of case independence -** that SQLite uses internally when comparing identifiers. -*/ -int sqlite3_strnicmp(const char *, const char *, int); - -/* -** CAPI3REF: Error Logging Interface -** -** ^The [sqlite3_log()] interface writes a message into the error log -** established by the [SQLITE_CONFIG_LOG] option to [sqlite3_config()]. -** ^If logging is enabled, the zFormat string and subsequent arguments are -** used with [sqlite3_snprintf()] to generate the final output string. -** -** The sqlite3_log() interface is intended for use by extensions such as -** virtual tables, collating functions, and SQL functions. While there is -** nothing to prevent an application from calling sqlite3_log(), doing so -** is considered bad form. -** -** The zFormat string must not be NULL. -** -** To avoid deadlocks and other threading problems, the sqlite3_log() routine -** will not use dynamically allocated memory. The log message is stored in -** a fixed-length buffer on the stack. If the log message is longer than -** a few hundred characters, it will be truncated to the length of the -** buffer. -*/ -void sqlite3_log(int iErrCode, const char *zFormat, ...); - -/* -** CAPI3REF: Write-Ahead Log Commit Hook -** -** ^The [sqlite3_wal_hook()] function is used to register a callback that -** will be invoked each time a database connection commits data to a -** [write-ahead log] (i.e. whenever a transaction is committed in -** [journal_mode | journal_mode=WAL mode]). -** -** ^The callback is invoked by SQLite after the commit has taken place and -** the associated write-lock on the database released, so the implementation -** may read, write or [checkpoint] the database as required. -** -** ^The first parameter passed to the callback function when it is invoked -** is a copy of the third parameter passed to sqlite3_wal_hook() when -** registering the callback. ^The second is a copy of the database handle. -** ^The third parameter is the name of the database that was written to - -** either "main" or the name of an [ATTACH]-ed database. ^The fourth parameter -** is the number of pages currently in the write-ahead log file, -** including those that were just committed. -** -** The callback function should normally return [SQLITE_OK]. ^If an error -** code is returned, that error will propagate back up through the -** SQLite code base to cause the statement that provoked the callback -** to report an error, though the commit will have still occurred. If the -** callback returns [SQLITE_ROW] or [SQLITE_DONE], or if it returns a value -** that does not correspond to any valid SQLite error code, the results -** are undefined. -** -** A single database handle may have at most a single write-ahead log callback -** registered at one time. ^Calling [sqlite3_wal_hook()] replaces any -** previously registered write-ahead log callback. ^Note that the -** [sqlite3_wal_autocheckpoint()] interface and the -** [wal_autocheckpoint pragma] both invoke [sqlite3_wal_hook()] and will -** those overwrite any prior [sqlite3_wal_hook()] settings. -*/ -void *sqlite3_wal_hook( - sqlite3*, - int(*)(void *,sqlite3*,const char*,int), - void* -); - -/* -** CAPI3REF: Configure an auto-checkpoint -** -** ^The [sqlite3_wal_autocheckpoint(D,N)] is a wrapper around -** [sqlite3_wal_hook()] that causes any database on [database connection] D -** to automatically [checkpoint] -** after committing a transaction if there are N or -** more frames in the [write-ahead log] file. ^Passing zero or -** a negative value as the nFrame parameter disables automatic -** checkpoints entirely. -** -** ^The callback registered by this function replaces any existing callback -** registered using [sqlite3_wal_hook()]. ^Likewise, registering a callback -** using [sqlite3_wal_hook()] disables the automatic checkpoint mechanism -** configured by this function. -** -** ^The [wal_autocheckpoint pragma] can be used to invoke this interface -** from SQL. -** -** ^Every new [database connection] defaults to having the auto-checkpoint -** enabled with a threshold of 1000 or [SQLITE_DEFAULT_WAL_AUTOCHECKPOINT] -** pages. The use of this interface -** is only necessary if the default setting is found to be suboptimal -** for a particular application. -*/ -int sqlite3_wal_autocheckpoint(sqlite3 *db, int N); - -/* -** CAPI3REF: Checkpoint a database -** -** ^The [sqlite3_wal_checkpoint(D,X)] interface causes database named X -** on [database connection] D to be [checkpointed]. ^If X is NULL or an -** empty string, then a checkpoint is run on all databases of -** connection D. ^If the database connection D is not in -** [WAL | write-ahead log mode] then this interface is a harmless no-op. -** -** ^The [wal_checkpoint pragma] can be used to invoke this interface -** from SQL. ^The [sqlite3_wal_autocheckpoint()] interface and the -** [wal_autocheckpoint pragma] can be used to cause this interface to be -** run whenever the WAL reaches a certain size threshold. -** -** See also: [sqlite3_wal_checkpoint_v2()] -*/ -int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb); - -/* -** CAPI3REF: Checkpoint a database -** -** Run a checkpoint operation on WAL database zDb attached to database -** handle db. The specific operation is determined by the value of the -** eMode parameter: -** -**
    -**
    SQLITE_CHECKPOINT_PASSIVE
    -** Checkpoint as many frames as possible without waiting for any database -** readers or writers to finish. Sync the db file if all frames in the log -** are checkpointed. This mode is the same as calling -** sqlite3_wal_checkpoint(). The busy-handler callback is never invoked. -** -**
    SQLITE_CHECKPOINT_FULL
    -** This mode blocks (calls the busy-handler callback) until there is no -** database writer and all readers are reading from the most recent database -** snapshot. It then checkpoints all frames in the log file and syncs the -** database file. This call blocks database writers while it is running, -** but not database readers. -** -**
    SQLITE_CHECKPOINT_RESTART
    -** This mode works the same way as SQLITE_CHECKPOINT_FULL, except after -** checkpointing the log file it blocks (calls the busy-handler callback) -** until all readers are reading from the database file only. This ensures -** that the next client to write to the database file restarts the log file -** from the beginning. This call blocks database writers while it is running, -** but not database readers. -**
    -** -** If pnLog is not NULL, then *pnLog is set to the total number of frames in -** the log file before returning. If pnCkpt is not NULL, then *pnCkpt is set to -** the total number of checkpointed frames (including any that were already -** checkpointed when this function is called). *pnLog and *pnCkpt may be -** populated even if sqlite3_wal_checkpoint_v2() returns other than SQLITE_OK. -** If no values are available because of an error, they are both set to -1 -** before returning to communicate this to the caller. -** -** All calls obtain an exclusive "checkpoint" lock on the database file. If -** any other process is running a checkpoint operation at the same time, the -** lock cannot be obtained and SQLITE_BUSY is returned. Even if there is a -** busy-handler configured, it will not be invoked in this case. -** -** The SQLITE_CHECKPOINT_FULL and RESTART modes also obtain the exclusive -** "writer" lock on the database file. If the writer lock cannot be obtained -** immediately, and a busy-handler is configured, it is invoked and the writer -** lock retried until either the busy-handler returns 0 or the lock is -** successfully obtained. The busy-handler is also invoked while waiting for -** database readers as described above. If the busy-handler returns 0 before -** the writer lock is obtained or while waiting for database readers, the -** checkpoint operation proceeds from that point in the same way as -** SQLITE_CHECKPOINT_PASSIVE - checkpointing as many frames as possible -** without blocking any further. SQLITE_BUSY is returned in this case. -** -** If parameter zDb is NULL or points to a zero length string, then the -** specified operation is attempted on all WAL databases. In this case the -** values written to output parameters *pnLog and *pnCkpt are undefined. If -** an SQLITE_BUSY error is encountered when processing one or more of the -** attached WAL databases, the operation is still attempted on any remaining -** attached databases and SQLITE_BUSY is returned to the caller. If any other -** error occurs while processing an attached database, processing is abandoned -** and the error code returned to the caller immediately. If no error -** (SQLITE_BUSY or otherwise) is encountered while processing the attached -** databases, SQLITE_OK is returned. -** -** If database zDb is the name of an attached database that is not in WAL -** mode, SQLITE_OK is returned and both *pnLog and *pnCkpt set to -1. If -** zDb is not NULL (or a zero length string) and is not the name of any -** attached database, SQLITE_ERROR is returned to the caller. -*/ -int sqlite3_wal_checkpoint_v2( - sqlite3 *db, /* Database handle */ - const char *zDb, /* Name of attached database (or NULL) */ - int eMode, /* SQLITE_CHECKPOINT_* value */ - int *pnLog, /* OUT: Size of WAL log in frames */ - int *pnCkpt /* OUT: Total number of frames checkpointed */ -); - -/* -** CAPI3REF: Checkpoint operation parameters -** -** These constants can be used as the 3rd parameter to -** [sqlite3_wal_checkpoint_v2()]. See the [sqlite3_wal_checkpoint_v2()] -** documentation for additional information about the meaning and use of -** each of these values. -*/ -#define SQLITE_CHECKPOINT_PASSIVE 0 -#define SQLITE_CHECKPOINT_FULL 1 -#define SQLITE_CHECKPOINT_RESTART 2 - -/* -** CAPI3REF: Virtual Table Interface Configuration -** -** This function may be called by either the [xConnect] or [xCreate] method -** of a [virtual table] implementation to configure -** various facets of the virtual table interface. -** -** If this interface is invoked outside the context of an xConnect or -** xCreate virtual table method then the behavior is undefined. -** -** At present, there is only one option that may be configured using -** this function. (See [SQLITE_VTAB_CONSTRAINT_SUPPORT].) Further options -** may be added in the future. -*/ -int sqlite3_vtab_config(sqlite3*, int op, ...); - -/* -** CAPI3REF: Virtual Table Configuration Options -** -** These macros define the various options to the -** [sqlite3_vtab_config()] interface that [virtual table] implementations -** can use to customize and optimize their behavior. -** -**
    -**
    SQLITE_VTAB_CONSTRAINT_SUPPORT -**
    Calls of the form -** [sqlite3_vtab_config](db,SQLITE_VTAB_CONSTRAINT_SUPPORT,X) are supported, -** where X is an integer. If X is zero, then the [virtual table] whose -** [xCreate] or [xConnect] method invoked [sqlite3_vtab_config()] does not -** support constraints. In this configuration (which is the default) if -** a call to the [xUpdate] method returns [SQLITE_CONSTRAINT], then the entire -** statement is rolled back as if [ON CONFLICT | OR ABORT] had been -** specified as part of the users SQL statement, regardless of the actual -** ON CONFLICT mode specified. -** -** If X is non-zero, then the virtual table implementation guarantees -** that if [xUpdate] returns [SQLITE_CONSTRAINT], it will do so before -** any modifications to internal or persistent data structures have been made. -** If the [ON CONFLICT] mode is ABORT, FAIL, IGNORE or ROLLBACK, SQLite -** is able to roll back a statement or database transaction, and abandon -** or continue processing the current SQL statement as appropriate. -** If the ON CONFLICT mode is REPLACE and the [xUpdate] method returns -** [SQLITE_CONSTRAINT], SQLite handles this as if the ON CONFLICT mode -** had been ABORT. -** -** Virtual table implementations that are required to handle OR REPLACE -** must do so within the [xUpdate] method. If a call to the -** [sqlite3_vtab_on_conflict()] function indicates that the current ON -** CONFLICT policy is REPLACE, the virtual table implementation should -** silently replace the appropriate rows within the xUpdate callback and -** return SQLITE_OK. Or, if this is not possible, it may return -** SQLITE_CONSTRAINT, in which case SQLite falls back to OR ABORT -** constraint handling. -**
    -*/ -#define SQLITE_VTAB_CONSTRAINT_SUPPORT 1 - -/* -** CAPI3REF: Determine The Virtual Table Conflict Policy -** -** This function may only be called from within a call to the [xUpdate] method -** of a [virtual table] implementation for an INSERT or UPDATE operation. ^The -** value returned is one of [SQLITE_ROLLBACK], [SQLITE_IGNORE], [SQLITE_FAIL], -** [SQLITE_ABORT], or [SQLITE_REPLACE], according to the [ON CONFLICT] mode -** of the SQL statement that triggered the call to the [xUpdate] method of the -** [virtual table]. -*/ -int sqlite3_vtab_on_conflict(sqlite3 *); - -/* -** CAPI3REF: Conflict resolution modes -** -** These constants are returned by [sqlite3_vtab_on_conflict()] to -** inform a [virtual table] implementation what the [ON CONFLICT] mode -** is for the SQL statement being evaluated. -** -** Note that the [SQLITE_IGNORE] constant is also used as a potential -** return value from the [sqlite3_set_authorizer()] callback and that -** [SQLITE_ABORT] is also a [result code]. -*/ -#define SQLITE_ROLLBACK 1 -/* #define SQLITE_IGNORE 2 // Also used by sqlite3_authorizer() callback */ -#define SQLITE_FAIL 3 -/* #define SQLITE_ABORT 4 // Also an error code */ -#define SQLITE_REPLACE 5 - - - -/* -** Undo the hack that converts floating point types to integer for -** builds on processors without floating point support. -*/ -#ifdef SQLITE_OMIT_FLOATING_POINT -# undef double -#endif - -#ifdef __cplusplus -} /* End of the 'extern "C"' block */ -#endif -#endif diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/sqlite3ext.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/sqlite3ext.h deleted file mode 100644 index 1698ea4e3b..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/sqlite3ext.h +++ /dev/null @@ -1,447 +0,0 @@ -/* -** 2006 June 7 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** This header file defines the SQLite interface for use by -** shared libraries that want to be imported as extensions into -** an SQLite instance. Shared libraries that intend to be loaded -** as extensions by SQLite should #include this file instead of -** sqlite3.h. -*/ -#ifndef _SQLITE3EXT_H_ -#define _SQLITE3EXT_H_ -#include "sqlite3.h" - -typedef struct sqlite3_api_routines sqlite3_api_routines; - -/* -** The following structure holds pointers to all of the SQLite API -** routines. -** -** WARNING: In order to maintain backwards compatibility, add new -** interfaces to the end of this structure only. If you insert new -** interfaces in the middle of this structure, then older different -** versions of SQLite will not be able to load each others' shared -** libraries! -*/ -struct sqlite3_api_routines { - void * (*aggregate_context)(sqlite3_context*,int nBytes); - int (*aggregate_count)(sqlite3_context*); - int (*bind_blob)(sqlite3_stmt*,int,const void*,int n,void(*)(void*)); - int (*bind_double)(sqlite3_stmt*,int,double); - int (*bind_int)(sqlite3_stmt*,int,int); - int (*bind_int64)(sqlite3_stmt*,int,sqlite_int64); - int (*bind_null)(sqlite3_stmt*,int); - int (*bind_parameter_count)(sqlite3_stmt*); - int (*bind_parameter_index)(sqlite3_stmt*,const char*zName); - const char * (*bind_parameter_name)(sqlite3_stmt*,int); - int (*bind_text)(sqlite3_stmt*,int,const char*,int n,void(*)(void*)); - int (*bind_text16)(sqlite3_stmt*,int,const void*,int,void(*)(void*)); - int (*bind_value)(sqlite3_stmt*,int,const sqlite3_value*); - int (*busy_handler)(sqlite3*,int(*)(void*,int),void*); - int (*busy_timeout)(sqlite3*,int ms); - int (*changes)(sqlite3*); - int (*close)(sqlite3*); - int (*collation_needed)(sqlite3*,void*,void(*)(void*,sqlite3*, - int eTextRep,const char*)); - int (*collation_needed16)(sqlite3*,void*,void(*)(void*,sqlite3*, - int eTextRep,const void*)); - const void * (*column_blob)(sqlite3_stmt*,int iCol); - int (*column_bytes)(sqlite3_stmt*,int iCol); - int (*column_bytes16)(sqlite3_stmt*,int iCol); - int (*column_count)(sqlite3_stmt*pStmt); - const char * (*column_database_name)(sqlite3_stmt*,int); - const void * (*column_database_name16)(sqlite3_stmt*,int); - const char * (*column_decltype)(sqlite3_stmt*,int i); - const void * (*column_decltype16)(sqlite3_stmt*,int); - double (*column_double)(sqlite3_stmt*,int iCol); - int (*column_int)(sqlite3_stmt*,int iCol); - sqlite_int64 (*column_int64)(sqlite3_stmt*,int iCol); - const char * (*column_name)(sqlite3_stmt*,int); - const void * (*column_name16)(sqlite3_stmt*,int); - const char * (*column_origin_name)(sqlite3_stmt*,int); - const void * (*column_origin_name16)(sqlite3_stmt*,int); - const char * (*column_table_name)(sqlite3_stmt*,int); - const void * (*column_table_name16)(sqlite3_stmt*,int); - const unsigned char * (*column_text)(sqlite3_stmt*,int iCol); - const void * (*column_text16)(sqlite3_stmt*,int iCol); - int (*column_type)(sqlite3_stmt*,int iCol); - sqlite3_value* (*column_value)(sqlite3_stmt*,int iCol); - void * (*commit_hook)(sqlite3*,int(*)(void*),void*); - int (*complete)(const char*sql); - int (*complete16)(const void*sql); - int (*create_collation)(sqlite3*,const char*,int,void*, - int(*)(void*,int,const void*,int,const void*)); - int (*create_collation16)(sqlite3*,const void*,int,void*, - int(*)(void*,int,const void*,int,const void*)); - int (*create_function)(sqlite3*,const char*,int,int,void*, - void (*xFunc)(sqlite3_context*,int,sqlite3_value**), - void (*xStep)(sqlite3_context*,int,sqlite3_value**), - void (*xFinal)(sqlite3_context*)); - int (*create_function16)(sqlite3*,const void*,int,int,void*, - void (*xFunc)(sqlite3_context*,int,sqlite3_value**), - void (*xStep)(sqlite3_context*,int,sqlite3_value**), - void (*xFinal)(sqlite3_context*)); - int (*create_module)(sqlite3*,const char*,const sqlite3_module*,void*); - int (*data_count)(sqlite3_stmt*pStmt); - sqlite3 * (*db_handle)(sqlite3_stmt*); - int (*declare_vtab)(sqlite3*,const char*); - int (*enable_shared_cache)(int); - int (*errcode)(sqlite3*db); - const char * (*errmsg)(sqlite3*); - const void * (*errmsg16)(sqlite3*); - int (*exec)(sqlite3*,const char*,sqlite3_callback,void*,char**); - int (*expired)(sqlite3_stmt*); - int (*finalize)(sqlite3_stmt*pStmt); - void (*free)(void*); - void (*free_table)(char**result); - int (*get_autocommit)(sqlite3*); - void * (*get_auxdata)(sqlite3_context*,int); - int (*get_table)(sqlite3*,const char*,char***,int*,int*,char**); - int (*global_recover)(void); - void (*interruptx)(sqlite3*); - sqlite_int64 (*last_insert_rowid)(sqlite3*); - const char * (*libversion)(void); - int (*libversion_number)(void); - void *(*malloc)(int); - char * (*mprintf)(const char*,...); - int (*open)(const char*,sqlite3**); - int (*open16)(const void*,sqlite3**); - int (*prepare)(sqlite3*,const char*,int,sqlite3_stmt**,const char**); - int (*prepare16)(sqlite3*,const void*,int,sqlite3_stmt**,const void**); - void * (*profile)(sqlite3*,void(*)(void*,const char*,sqlite_uint64),void*); - void (*progress_handler)(sqlite3*,int,int(*)(void*),void*); - void *(*realloc)(void*,int); - int (*reset)(sqlite3_stmt*pStmt); - void (*result_blob)(sqlite3_context*,const void*,int,void(*)(void*)); - void (*result_double)(sqlite3_context*,double); - void (*result_error)(sqlite3_context*,const char*,int); - void (*result_error16)(sqlite3_context*,const void*,int); - void (*result_int)(sqlite3_context*,int); - void (*result_int64)(sqlite3_context*,sqlite_int64); - void (*result_null)(sqlite3_context*); - void (*result_text)(sqlite3_context*,const char*,int,void(*)(void*)); - void (*result_text16)(sqlite3_context*,const void*,int,void(*)(void*)); - void (*result_text16be)(sqlite3_context*,const void*,int,void(*)(void*)); - void (*result_text16le)(sqlite3_context*,const void*,int,void(*)(void*)); - void (*result_value)(sqlite3_context*,sqlite3_value*); - void * (*rollback_hook)(sqlite3*,void(*)(void*),void*); - int (*set_authorizer)(sqlite3*,int(*)(void*,int,const char*,const char*, - const char*,const char*),void*); - void (*set_auxdata)(sqlite3_context*,int,void*,void (*)(void*)); - char * (*snprintf)(int,char*,const char*,...); - int (*step)(sqlite3_stmt*); - int (*table_column_metadata)(sqlite3*,const char*,const char*,const char*, - char const**,char const**,int*,int*,int*); - void (*thread_cleanup)(void); - int (*total_changes)(sqlite3*); - void * (*trace)(sqlite3*,void(*xTrace)(void*,const char*),void*); - int (*transfer_bindings)(sqlite3_stmt*,sqlite3_stmt*); - void * (*update_hook)(sqlite3*,void(*)(void*,int ,char const*,char const*, - sqlite_int64),void*); - void * (*user_data)(sqlite3_context*); - const void * (*value_blob)(sqlite3_value*); - int (*value_bytes)(sqlite3_value*); - int (*value_bytes16)(sqlite3_value*); - double (*value_double)(sqlite3_value*); - int (*value_int)(sqlite3_value*); - sqlite_int64 (*value_int64)(sqlite3_value*); - int (*value_numeric_type)(sqlite3_value*); - const unsigned char * (*value_text)(sqlite3_value*); - const void * (*value_text16)(sqlite3_value*); - const void * (*value_text16be)(sqlite3_value*); - const void * (*value_text16le)(sqlite3_value*); - int (*value_type)(sqlite3_value*); - char *(*vmprintf)(const char*,va_list); - /* Added ??? */ - int (*overload_function)(sqlite3*, const char *zFuncName, int nArg); - /* Added by 3.3.13 */ - int (*prepare_v2)(sqlite3*,const char*,int,sqlite3_stmt**,const char**); - int (*prepare16_v2)(sqlite3*,const void*,int,sqlite3_stmt**,const void**); - int (*clear_bindings)(sqlite3_stmt*); - /* Added by 3.4.1 */ - int (*create_module_v2)(sqlite3*,const char*,const sqlite3_module*,void*, - void (*xDestroy)(void *)); - /* Added by 3.5.0 */ - int (*bind_zeroblob)(sqlite3_stmt*,int,int); - int (*blob_bytes)(sqlite3_blob*); - int (*blob_close)(sqlite3_blob*); - int (*blob_open)(sqlite3*,const char*,const char*,const char*,sqlite3_int64, - int,sqlite3_blob**); - int (*blob_read)(sqlite3_blob*,void*,int,int); - int (*blob_write)(sqlite3_blob*,const void*,int,int); - int (*create_collation_v2)(sqlite3*,const char*,int,void*, - int(*)(void*,int,const void*,int,const void*), - void(*)(void*)); - int (*file_control)(sqlite3*,const char*,int,void*); - sqlite3_int64 (*memory_highwater)(int); - sqlite3_int64 (*memory_used)(void); - sqlite3_mutex *(*mutex_alloc)(int); - void (*mutex_enter)(sqlite3_mutex*); - void (*mutex_free)(sqlite3_mutex*); - void (*mutex_leave)(sqlite3_mutex*); - int (*mutex_try)(sqlite3_mutex*); - int (*open_v2)(const char*,sqlite3**,int,const char*); - int (*release_memory)(int); - void (*result_error_nomem)(sqlite3_context*); - void (*result_error_toobig)(sqlite3_context*); - int (*sleep)(int); - void (*soft_heap_limit)(int); - sqlite3_vfs *(*vfs_find)(const char*); - int (*vfs_register)(sqlite3_vfs*,int); - int (*vfs_unregister)(sqlite3_vfs*); - int (*xthreadsafe)(void); - void (*result_zeroblob)(sqlite3_context*,int); - void (*result_error_code)(sqlite3_context*,int); - int (*test_control)(int, ...); - void (*randomness)(int,void*); - sqlite3 *(*context_db_handle)(sqlite3_context*); - int (*extended_result_codes)(sqlite3*,int); - int (*limit)(sqlite3*,int,int); - sqlite3_stmt *(*next_stmt)(sqlite3*,sqlite3_stmt*); - const char *(*sql)(sqlite3_stmt*); - int (*status)(int,int*,int*,int); - int (*backup_finish)(sqlite3_backup*); - sqlite3_backup *(*backup_init)(sqlite3*,const char*,sqlite3*,const char*); - int (*backup_pagecount)(sqlite3_backup*); - int (*backup_remaining)(sqlite3_backup*); - int (*backup_step)(sqlite3_backup*,int); - const char *(*compileoption_get)(int); - int (*compileoption_used)(const char*); - int (*create_function_v2)(sqlite3*,const char*,int,int,void*, - void (*xFunc)(sqlite3_context*,int,sqlite3_value**), - void (*xStep)(sqlite3_context*,int,sqlite3_value**), - void (*xFinal)(sqlite3_context*), - void(*xDestroy)(void*)); - int (*db_config)(sqlite3*,int,...); - sqlite3_mutex *(*db_mutex)(sqlite3*); - int (*db_status)(sqlite3*,int,int*,int*,int); - int (*extended_errcode)(sqlite3*); - void (*log)(int,const char*,...); - sqlite3_int64 (*soft_heap_limit64)(sqlite3_int64); - const char *(*sourceid)(void); - int (*stmt_status)(sqlite3_stmt*,int,int); - int (*strnicmp)(const char*,const char*,int); - int (*unlock_notify)(sqlite3*,void(*)(void**,int),void*); - int (*wal_autocheckpoint)(sqlite3*,int); - int (*wal_checkpoint)(sqlite3*,const char*); - void *(*wal_hook)(sqlite3*,int(*)(void*,sqlite3*,const char*,int),void*); - int (*blob_reopen)(sqlite3_blob*,sqlite3_int64); - int (*vtab_config)(sqlite3*,int op,...); - int (*vtab_on_conflict)(sqlite3*); -}; - -/* -** The following macros redefine the API routines so that they are -** redirected throught the global sqlite3_api structure. -** -** This header file is also used by the loadext.c source file -** (part of the main SQLite library - not an extension) so that -** it can get access to the sqlite3_api_routines structure -** definition. But the main library does not want to redefine -** the API. So the redefinition macros are only valid if the -** SQLITE_CORE macros is undefined. -*/ -#ifndef SQLITE_CORE -#define sqlite3_aggregate_context sqlite3_api->aggregate_context -#ifndef SQLITE_OMIT_DEPRECATED -#define sqlite3_aggregate_count sqlite3_api->aggregate_count -#endif -#define sqlite3_bind_blob sqlite3_api->bind_blob -#define sqlite3_bind_double sqlite3_api->bind_double -#define sqlite3_bind_int sqlite3_api->bind_int -#define sqlite3_bind_int64 sqlite3_api->bind_int64 -#define sqlite3_bind_null sqlite3_api->bind_null -#define sqlite3_bind_parameter_count sqlite3_api->bind_parameter_count -#define sqlite3_bind_parameter_index sqlite3_api->bind_parameter_index -#define sqlite3_bind_parameter_name sqlite3_api->bind_parameter_name -#define sqlite3_bind_text sqlite3_api->bind_text -#define sqlite3_bind_text16 sqlite3_api->bind_text16 -#define sqlite3_bind_value sqlite3_api->bind_value -#define sqlite3_busy_handler sqlite3_api->busy_handler -#define sqlite3_busy_timeout sqlite3_api->busy_timeout -#define sqlite3_changes sqlite3_api->changes -#define sqlite3_close sqlite3_api->close -#define sqlite3_collation_needed sqlite3_api->collation_needed -#define sqlite3_collation_needed16 sqlite3_api->collation_needed16 -#define sqlite3_column_blob sqlite3_api->column_blob -#define sqlite3_column_bytes sqlite3_api->column_bytes -#define sqlite3_column_bytes16 sqlite3_api->column_bytes16 -#define sqlite3_column_count sqlite3_api->column_count -#define sqlite3_column_database_name sqlite3_api->column_database_name -#define sqlite3_column_database_name16 sqlite3_api->column_database_name16 -#define sqlite3_column_decltype sqlite3_api->column_decltype -#define sqlite3_column_decltype16 sqlite3_api->column_decltype16 -#define sqlite3_column_double sqlite3_api->column_double -#define sqlite3_column_int sqlite3_api->column_int -#define sqlite3_column_int64 sqlite3_api->column_int64 -#define sqlite3_column_name sqlite3_api->column_name -#define sqlite3_column_name16 sqlite3_api->column_name16 -#define sqlite3_column_origin_name sqlite3_api->column_origin_name -#define sqlite3_column_origin_name16 sqlite3_api->column_origin_name16 -#define sqlite3_column_table_name sqlite3_api->column_table_name -#define sqlite3_column_table_name16 sqlite3_api->column_table_name16 -#define sqlite3_column_text sqlite3_api->column_text -#define sqlite3_column_text16 sqlite3_api->column_text16 -#define sqlite3_column_type sqlite3_api->column_type -#define sqlite3_column_value sqlite3_api->column_value -#define sqlite3_commit_hook sqlite3_api->commit_hook -#define sqlite3_complete sqlite3_api->complete -#define sqlite3_complete16 sqlite3_api->complete16 -#define sqlite3_create_collation sqlite3_api->create_collation -#define sqlite3_create_collation16 sqlite3_api->create_collation16 -#define sqlite3_create_function sqlite3_api->create_function -#define sqlite3_create_function16 sqlite3_api->create_function16 -#define sqlite3_create_module sqlite3_api->create_module -#define sqlite3_create_module_v2 sqlite3_api->create_module_v2 -#define sqlite3_data_count sqlite3_api->data_count -#define sqlite3_db_handle sqlite3_api->db_handle -#define sqlite3_declare_vtab sqlite3_api->declare_vtab -#define sqlite3_enable_shared_cache sqlite3_api->enable_shared_cache -#define sqlite3_errcode sqlite3_api->errcode -#define sqlite3_errmsg sqlite3_api->errmsg -#define sqlite3_errmsg16 sqlite3_api->errmsg16 -#define sqlite3_exec sqlite3_api->exec -#ifndef SQLITE_OMIT_DEPRECATED -#define sqlite3_expired sqlite3_api->expired -#endif -#define sqlite3_finalize sqlite3_api->finalize -#define sqlite3_free sqlite3_api->free -#define sqlite3_free_table sqlite3_api->free_table -#define sqlite3_get_autocommit sqlite3_api->get_autocommit -#define sqlite3_get_auxdata sqlite3_api->get_auxdata -#define sqlite3_get_table sqlite3_api->get_table -#ifndef SQLITE_OMIT_DEPRECATED -#define sqlite3_global_recover sqlite3_api->global_recover -#endif -#define sqlite3_interrupt sqlite3_api->interruptx -#define sqlite3_last_insert_rowid sqlite3_api->last_insert_rowid -#define sqlite3_libversion sqlite3_api->libversion -#define sqlite3_libversion_number sqlite3_api->libversion_number -#define sqlite3_malloc sqlite3_api->malloc -#define sqlite3_mprintf sqlite3_api->mprintf -#define sqlite3_open sqlite3_api->open -#define sqlite3_open16 sqlite3_api->open16 -#define sqlite3_prepare sqlite3_api->prepare -#define sqlite3_prepare16 sqlite3_api->prepare16 -#define sqlite3_prepare_v2 sqlite3_api->prepare_v2 -#define sqlite3_prepare16_v2 sqlite3_api->prepare16_v2 -#define sqlite3_profile sqlite3_api->profile -#define sqlite3_progress_handler sqlite3_api->progress_handler -#define sqlite3_realloc sqlite3_api->realloc -#define sqlite3_reset sqlite3_api->reset -#define sqlite3_result_blob sqlite3_api->result_blob -#define sqlite3_result_double sqlite3_api->result_double -#define sqlite3_result_error sqlite3_api->result_error -#define sqlite3_result_error16 sqlite3_api->result_error16 -#define sqlite3_result_int sqlite3_api->result_int -#define sqlite3_result_int64 sqlite3_api->result_int64 -#define sqlite3_result_null sqlite3_api->result_null -#define sqlite3_result_text sqlite3_api->result_text -#define sqlite3_result_text16 sqlite3_api->result_text16 -#define sqlite3_result_text16be sqlite3_api->result_text16be -#define sqlite3_result_text16le sqlite3_api->result_text16le -#define sqlite3_result_value sqlite3_api->result_value -#define sqlite3_rollback_hook sqlite3_api->rollback_hook -#define sqlite3_set_authorizer sqlite3_api->set_authorizer -#define sqlite3_set_auxdata sqlite3_api->set_auxdata -#define sqlite3_snprintf sqlite3_api->snprintf -#define sqlite3_step sqlite3_api->step -#define sqlite3_table_column_metadata sqlite3_api->table_column_metadata -#define sqlite3_thread_cleanup sqlite3_api->thread_cleanup -#define sqlite3_total_changes sqlite3_api->total_changes -#define sqlite3_trace sqlite3_api->trace -#ifndef SQLITE_OMIT_DEPRECATED -#define sqlite3_transfer_bindings sqlite3_api->transfer_bindings -#endif -#define sqlite3_update_hook sqlite3_api->update_hook -#define sqlite3_user_data sqlite3_api->user_data -#define sqlite3_value_blob sqlite3_api->value_blob -#define sqlite3_value_bytes sqlite3_api->value_bytes -#define sqlite3_value_bytes16 sqlite3_api->value_bytes16 -#define sqlite3_value_double sqlite3_api->value_double -#define sqlite3_value_int sqlite3_api->value_int -#define sqlite3_value_int64 sqlite3_api->value_int64 -#define sqlite3_value_numeric_type sqlite3_api->value_numeric_type -#define sqlite3_value_text sqlite3_api->value_text -#define sqlite3_value_text16 sqlite3_api->value_text16 -#define sqlite3_value_text16be sqlite3_api->value_text16be -#define sqlite3_value_text16le sqlite3_api->value_text16le -#define sqlite3_value_type sqlite3_api->value_type -#define sqlite3_vmprintf sqlite3_api->vmprintf -#define sqlite3_overload_function sqlite3_api->overload_function -#define sqlite3_prepare_v2 sqlite3_api->prepare_v2 -#define sqlite3_prepare16_v2 sqlite3_api->prepare16_v2 -#define sqlite3_clear_bindings sqlite3_api->clear_bindings -#define sqlite3_bind_zeroblob sqlite3_api->bind_zeroblob -#define sqlite3_blob_bytes sqlite3_api->blob_bytes -#define sqlite3_blob_close sqlite3_api->blob_close -#define sqlite3_blob_open sqlite3_api->blob_open -#define sqlite3_blob_read sqlite3_api->blob_read -#define sqlite3_blob_write sqlite3_api->blob_write -#define sqlite3_create_collation_v2 sqlite3_api->create_collation_v2 -#define sqlite3_file_control sqlite3_api->file_control -#define sqlite3_memory_highwater sqlite3_api->memory_highwater -#define sqlite3_memory_used sqlite3_api->memory_used -#define sqlite3_mutex_alloc sqlite3_api->mutex_alloc -#define sqlite3_mutex_enter sqlite3_api->mutex_enter -#define sqlite3_mutex_free sqlite3_api->mutex_free -#define sqlite3_mutex_leave sqlite3_api->mutex_leave -#define sqlite3_mutex_try sqlite3_api->mutex_try -#define sqlite3_open_v2 sqlite3_api->open_v2 -#define sqlite3_release_memory sqlite3_api->release_memory -#define sqlite3_result_error_nomem sqlite3_api->result_error_nomem -#define sqlite3_result_error_toobig sqlite3_api->result_error_toobig -#define sqlite3_sleep sqlite3_api->sleep -#define sqlite3_soft_heap_limit sqlite3_api->soft_heap_limit -#define sqlite3_vfs_find sqlite3_api->vfs_find -#define sqlite3_vfs_register sqlite3_api->vfs_register -#define sqlite3_vfs_unregister sqlite3_api->vfs_unregister -#define sqlite3_threadsafe sqlite3_api->xthreadsafe -#define sqlite3_result_zeroblob sqlite3_api->result_zeroblob -#define sqlite3_result_error_code sqlite3_api->result_error_code -#define sqlite3_test_control sqlite3_api->test_control -#define sqlite3_randomness sqlite3_api->randomness -#define sqlite3_context_db_handle sqlite3_api->context_db_handle -#define sqlite3_extended_result_codes sqlite3_api->extended_result_codes -#define sqlite3_limit sqlite3_api->limit -#define sqlite3_next_stmt sqlite3_api->next_stmt -#define sqlite3_sql sqlite3_api->sql -#define sqlite3_status sqlite3_api->status -#define sqlite3_backup_finish sqlite3_api->backup_finish -#define sqlite3_backup_init sqlite3_api->backup_init -#define sqlite3_backup_pagecount sqlite3_api->backup_pagecount -#define sqlite3_backup_remaining sqlite3_api->backup_remaining -#define sqlite3_backup_step sqlite3_api->backup_step -#define sqlite3_compileoption_get sqlite3_api->compileoption_get -#define sqlite3_compileoption_used sqlite3_api->compileoption_used -#define sqlite3_create_function_v2 sqlite3_api->create_function_v2 -#define sqlite3_db_config sqlite3_api->db_config -#define sqlite3_db_mutex sqlite3_api->db_mutex -#define sqlite3_db_status sqlite3_api->db_status -#define sqlite3_extended_errcode sqlite3_api->extended_errcode -#define sqlite3_log sqlite3_api->log -#define sqlite3_soft_heap_limit64 sqlite3_api->soft_heap_limit64 -#define sqlite3_sourceid sqlite3_api->sourceid -#define sqlite3_stmt_status sqlite3_api->stmt_status -#define sqlite3_strnicmp sqlite3_api->strnicmp -#define sqlite3_unlock_notify sqlite3_api->unlock_notify -#define sqlite3_wal_autocheckpoint sqlite3_api->wal_autocheckpoint -#define sqlite3_wal_checkpoint sqlite3_api->wal_checkpoint -#define sqlite3_wal_hook sqlite3_api->wal_hook -#define sqlite3_blob_reopen sqlite3_api->blob_reopen -#define sqlite3_vtab_config sqlite3_api->vtab_config -#define sqlite3_vtab_on_conflict sqlite3_api->vtab_on_conflict -#endif /* SQLITE_CORE */ - -#define SQLITE_EXTENSION_INIT1 const sqlite3_api_routines *sqlite3_api = 0; -#define SQLITE_EXTENSION_INIT2(v) sqlite3_api = v; - -#endif /* _SQLITE3EXT_H_ */ diff --git a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/sqliteInt.h b/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/sqliteInt.h deleted file mode 100644 index 2bfa518d64..0000000000 --- a/components/dfs/filesystems/uffs/src/test/sqlite3/sqlite-src-3070900/src/sqliteInt.h +++ /dev/null @@ -1,3274 +0,0 @@ -/* -** 2001 September 15 -** -** The author disclaims copyright to this source code. In place of -** a legal notice, here is a blessing: -** -** May you do good and not evil. -** May you find forgiveness for yourself and forgive others. -** May you share freely, never taking more than you give. -** -************************************************************************* -** Internal interface definitions for SQLite. -** -*/ -#ifndef _SQLITEINT_H_ -#define _SQLITEINT_H_ - -/* -** These #defines should enable >2GB file support on POSIX if the -** underlying operating system supports it. If the OS lacks -** large file support, or if the OS is windows, these should be no-ops. -** -** Ticket #2739: The _LARGEFILE_SOURCE macro must appear before any -** system #includes. Hence, this block of code must be the very first -** code in all source files. -** -** Large file support can be disabled using the -DSQLITE_DISABLE_LFS switch -** on the compiler command line. This is necessary if you are compiling -** on a recent machine (ex: Red Hat 7.2) but you want your code to work -** on an older machine (ex: Red Hat 6.0). If you compile on Red Hat 7.2 -** without this option, LFS is enable. But LFS does not exist in the kernel -** in Red Hat 6.0, so the code won't work. Hence, for maximum binary -** portability you should omit LFS. -** -** Similar is true for Mac OS X. LFS is only supported on Mac OS X 9 and later. -*/ -#ifndef SQLITE_DISABLE_LFS -# define _LARGE_FILE 1 -# ifndef _FILE_OFFSET_BITS -# define _FILE_OFFSET_BITS 64 -# endif -# define _LARGEFILE_SOURCE 1 -#endif - -/* -** Include the configuration header output by 'configure' if we're using the -** autoconf-based build -*/ -#ifdef _HAVE_SQLITE_CONFIG_H -#include "config.h" -#endif - -#include "sqliteLimit.h" - -/* Disable nuisance warnings on Borland compilers */ -#if defined(__BORLANDC__) -#pragma warn -rch /* unreachable code */ -#pragma warn -ccc /* Condition is always true or false */ -#pragma warn -aus /* Assigned value is never used */ -#pragma warn -csu /* Comparing signed and unsigned */ -#pragma warn -spa /* Suspicious pointer arithmetic */ -#endif - -/* Needed for various definitions... */ -#ifndef _GNU_SOURCE -# define _GNU_SOURCE -#endif - -/* -** Include standard header files as necessary -*/ -#ifdef HAVE_STDINT_H -#include -#endif -#ifdef HAVE_INTTYPES_H -#include -#endif - -/* -** The following macros are used to cast pointers to integers and -** integers to pointers. The way you do this varies from one compiler -** to the next, so we have developed the following set of #if statements -** to generate appropriate macros for a wide range of compilers. -** -** The correct "ANSI" way to do this is to use the intptr_t type. -** Unfortunately, that typedef is not available on all compilers, or -** if it is available, it requires an #include of specific headers -** that vary from one machine to the next. -** -** Ticket #3860: The llvm-gcc-4.2 compiler from Apple chokes on -** the ((void*)&((char*)0)[X]) construct. But MSVC chokes on ((void*)(X)). -** So we have to define the macros in different ways depending on the -** compiler. -*/ -#if defined(__PTRDIFF_TYPE__) /* This case should work for GCC */ -# define SQLITE_INT_TO_PTR(X) ((void*)(__PTRDIFF_TYPE__)(X)) -# define SQLITE_PTR_TO_INT(X) ((int)(__PTRDIFF_TYPE__)(X)) -#elif !defined(__GNUC__) /* Works for compilers other than LLVM */ -# define SQLITE_INT_TO_PTR(X) ((void*)&((char*)0)[X]) -# define SQLITE_PTR_TO_INT(X) ((int)(((char*)X)-(char*)0)) -#elif defined(HAVE_STDINT_H) /* Use this case if we have ANSI headers */ -# define SQLITE_INT_TO_PTR(X) ((void*)(intptr_t)(X)) -# define SQLITE_PTR_TO_INT(X) ((int)(intptr_t)(X)) -#else /* Generates a warning - but it always works */ -# define SQLITE_INT_TO_PTR(X) ((void*)(X)) -# define SQLITE_PTR_TO_INT(X) ((int)(X)) -#endif - -/* -** The SQLITE_THREADSAFE macro must be defined as 0, 1, or 2. -** 0 means mutexes are permanently disable and the library is never -** threadsafe. 1 means the library is serialized which is the highest -** level of threadsafety. 2 means the libary is multithreaded - multiple -** threads can use SQLite as long as no two threads try to use the same -** database connection at the same time. -** -** Older versions of SQLite used an optional THREADSAFE macro. -** We support that for legacy. -*/ -#if !defined(SQLITE_THREADSAFE) -#if defined(THREADSAFE) -# define SQLITE_THREADSAFE THREADSAFE -#else -# define SQLITE_THREADSAFE 1 /* IMP: R-07272-22309 */ -#endif -#endif - -/* -** The SQLITE_DEFAULT_MEMSTATUS macro must be defined as either 0 or 1. -** It determines whether or not the features related to -** SQLITE_CONFIG_MEMSTATUS are available by default or not. This value can -** be overridden at runtime using the sqlite3_config() API. -*/ -#if !defined(SQLITE_DEFAULT_MEMSTATUS) -# define SQLITE_DEFAULT_MEMSTATUS 1 -#endif - -/* -** Exactly one of the following macros must be defined in order to -** specify which memory allocation subsystem to use. -** -** SQLITE_SYSTEM_MALLOC // Use normal system malloc() -** SQLITE_WIN32_MALLOC // Use Win32 native heap API -** SQLITE_MEMDEBUG // Debugging version of system malloc() -** -** On Windows, if the SQLITE_WIN32_MALLOC_VALIDATE macro is defined and the -** assert() macro is enabled, each call into the Win32 native heap subsystem -** will cause HeapValidate to be called. If heap validation should fail, an -** assertion will be triggered. -** -** (Historical note: There used to be several other options, but we've -** pared it down to just these three.) -** -** If none of the above are defined, then set SQLITE_SYSTEM_MALLOC as -** the default. -*/ -#if defined(SQLITE_SYSTEM_MALLOC)+defined(SQLITE_WIN32_MALLOC)+defined(SQLITE_MEMDEBUG)>1 -# error "At most one of the following compile-time configuration options\ - is allows: SQLITE_SYSTEM_MALLOC, SQLITE_WIN32_MALLOC, SQLITE_MEMDEBUG" -#endif -#if defined(SQLITE_SYSTEM_MALLOC)+defined(SQLITE_WIN32_MALLOC)+defined(SQLITE_MEMDEBUG)==0 -# define SQLITE_SYSTEM_MALLOC 1 -#endif - -/* -** If SQLITE_MALLOC_SOFT_LIMIT is not zero, then try to keep the -** sizes of memory allocations below this value where possible. -*/ -#if !defined(SQLITE_MALLOC_SOFT_LIMIT) -# define SQLITE_MALLOC_SOFT_LIMIT 1024 -#endif - -/* -** We need to define _XOPEN_SOURCE as follows in order to enable -** recursive mutexes on most Unix systems. But Mac OS X is different. -** The _XOPEN_SOURCE define causes problems for Mac OS X we are told, -** so it is omitted there. See ticket #2673. -** -** Later we learn that _XOPEN_SOURCE is poorly or incorrectly -** implemented on some systems. So we avoid defining it at all -** if it is already defined or if it is unneeded because we are -** not doing a threadsafe build. Ticket #2681. -** -** See also ticket #2741. -*/ -#if !defined(_XOPEN_SOURCE) && !defined(__DARWIN__) && !defined(__APPLE__) && SQLITE_THREADSAFE -# define _XOPEN_SOURCE 500 /* Needed to enable pthread recursive mutexes */ -#endif - -/* -** The TCL headers are only needed when compiling the TCL bindings. -*/ -#if defined(SQLITE_TCL) || defined(TCLSH) -# include -#endif - -/* -** Many people are failing to set -DNDEBUG=1 when compiling SQLite. -** Setting NDEBUG makes the code smaller and run faster. So the following -** lines are added to automatically set NDEBUG unless the -DSQLITE_DEBUG=1 -** option is set. Thus NDEBUG becomes an opt-in rather than an opt-out -** feature. -*/ -#if !defined(NDEBUG) && !defined(SQLITE_DEBUG) -# define NDEBUG 1 -#endif - -/* -** The testcase() macro is used to aid in coverage testing. When -** doing coverage testing, the condition inside the argument to -** testcase() must be evaluated both true and false in order to -** get full branch coverage. The testcase() macro is inserted -** to help ensure adequate test coverage in places where simple -** condition/decision coverage is inadequate. For example, testcase() -** can be used to make sure boundary values are tested. For -** bitmask tests, testcase() can be used to make sure each bit -** is significant and used at least once. On switch statements -** where multiple cases go to the same block of code, testcase() -** can insure that all cases are evaluated. -** -*/ -#ifdef SQLITE_COVERAGE_TEST - void sqlite3Coverage(int); -# define testcase(X) if( X ){ sqlite3Coverage(__LINE__); } -#else -# define testcase(X) -#endif - -/* -** The TESTONLY macro is used to enclose variable declarations or -** other bits of code that are needed to support the arguments -** within testcase() and assert() macros. -*/ -#if !defined(NDEBUG) || defined(SQLITE_COVERAGE_TEST) -# define TESTONLY(X) X -#else -# define TESTONLY(X) -#endif - -/* -** Sometimes we need a small amount of code such as a variable initialization -** to setup for a later assert() statement. We do not want this code to -** appear when assert() is disabled. The following macro is therefore -** used to contain that setup code. The "VVA" acronym stands for -** "Verification, Validation, and Accreditation". In other words, the -** code within VVA_ONLY() will only run during verification processes. -*/ -#ifndef NDEBUG -# define VVA_ONLY(X) X -#else -# define VVA_ONLY(X) -#endif - -/* -** The ALWAYS and NEVER macros surround boolean expressions which -** are intended to always be true or false, respectively. Such -** expressions could be omitted from the code completely. But they -** are included in a few cases in order to enhance the resilience -** of SQLite to unexpected behavior - to make the code "self-healing" -** or "ductile" rather than being "brittle" and crashing at the first -** hint of unplanned behavior. -** -** In other words, ALWAYS and NEVER are added for defensive code. -** -** When doing coverage testing ALWAYS and NEVER are hard-coded to -** be true and false so that the unreachable code then specify will -** not be counted as untested code. -*/ -#if defined(SQLITE_COVERAGE_TEST) -# define ALWAYS(X) (1) -# define NEVER(X) (0) -#elif !defined(NDEBUG) -# define ALWAYS(X) ((X)?1:(assert(0),0)) -# define NEVER(X) ((X)?(assert(0),1):0) -#else -# define ALWAYS(X) (X) -# define NEVER(X) (X) -#endif - -/* -** Return true (non-zero) if the input is a integer that is too large -** to fit in 32-bits. This macro is used inside of various testcase() -** macros to verify that we have tested SQLite for large-file support. -*/ -#define IS_BIG_INT(X) (((X)&~(i64)0xffffffff)!=0) - -/* -** The macro unlikely() is a hint that surrounds a boolean -** expression that is usually false. Macro likely() surrounds -** a boolean expression that is usually true. GCC is able to -** use these hints to generate better code, sometimes. -*/ -#if defined(__GNUC__) && 0 -# define likely(X) __builtin_expect((X),1) -# define unlikely(X) __builtin_expect((X),0) -#else -# define likely(X) !!(X) -# define unlikely(X) !!(X) -#endif - -#include "sqlite3.h" -#include "hash.h" -#include "parse.h" -#include -#include -#include -#include -#include - -/* -** If compiling for a processor that lacks floating point support, -** substitute integer for floating-point -*/ -#ifdef SQLITE_OMIT_FLOATING_POINT -# define double sqlite_int64 -# define float sqlite_int64 -# define LONGDOUBLE_TYPE sqlite_int64 -# ifndef SQLITE_BIG_DBL -# define SQLITE_BIG_DBL (((sqlite3_int64)1)<<50) -# endif -# define SQLITE_OMIT_DATETIME_FUNCS 1 -# define SQLITE_OMIT_TRACE 1 -# undef SQLITE_MIXED_ENDIAN_64BIT_FLOAT -# undef SQLITE_HAVE_ISNAN -#endif -#ifndef SQLITE_BIG_DBL -# define SQLITE_BIG_DBL (1e99) -#endif - -/* -** OMIT_TEMPDB is set to 1 if SQLITE_OMIT_TEMPDB is defined, or 0 -** afterward. Having this macro allows us to cause the C compiler -** to omit code used by TEMP tables without messy #ifndef statements. -*/ -#ifdef SQLITE_OMIT_TEMPDB -#define OMIT_TEMPDB 1 -#else -#define OMIT_TEMPDB 0 -#endif - -/* -** The "file format" number is an integer that is incremented whenever -** the VDBE-level file format changes. The following macros define the -** the default file format for new databases and the maximum file format -** that the library can read. -*/ -#define SQLITE_MAX_FILE_FORMAT 4 -#ifndef SQLITE_DEFAULT_FILE_FORMAT -# define SQLITE_DEFAULT_FILE_FORMAT 1 -#endif - -/* -** Determine whether triggers are recursive by default. This can be -** changed at run-time using a pragma. -*/ -#ifndef SQLITE_DEFAULT_RECURSIVE_TRIGGERS -# define SQLITE_DEFAULT_RECURSIVE_TRIGGERS 0 -#endif - -/* -** Provide a default value for SQLITE_TEMP_STORE in case it is not specified -** on the command-line -*/ -#ifndef SQLITE_TEMP_STORE -# define SQLITE_TEMP_STORE 1 -#endif - -/* -** GCC does not define the offsetof() macro so we'll have to do it -** ourselves. -*/ -#ifndef offsetof -#define offsetof(STRUCTURE,FIELD) ((int)((char*)&((STRUCTURE*)0)->FIELD)) -#endif - -/* -** Check to see if this machine uses EBCDIC. (Yes, believe it or -** not, there are still machines out there that use EBCDIC.) -*/ -#if 'A' == '\301' -# define SQLITE_EBCDIC 1 -#else -# define SQLITE_ASCII 1 -#endif - -/* -** Integers of known sizes. These typedefs might change for architectures -** where the sizes very. Preprocessor macros are available so that the -** types can be conveniently redefined at compile-type. Like this: -** -** cc '-DUINTPTR_TYPE=long long int' ... -*/ -#ifndef UINT32_TYPE -# ifdef HAVE_UINT32_T -# define UINT32_TYPE uint32_t -# else -# define UINT32_TYPE unsigned int -# endif -#endif -#ifndef UINT16_TYPE -# ifdef HAVE_UINT16_T -# define UINT16_TYPE uint16_t -# else -# define UINT16_TYPE unsigned short int -# endif -#endif -#ifndef INT16_TYPE -# ifdef HAVE_INT16_T -# define INT16_TYPE int16_t -# else -# define INT16_TYPE short int -# endif -#endif -#ifndef UINT8_TYPE -# ifdef HAVE_UINT8_T -# define UINT8_TYPE uint8_t -# else -# define UINT8_TYPE unsigned char -# endif -#endif -#ifndef INT8_TYPE -# ifdef HAVE_INT8_T -# define INT8_TYPE int8_t -# else -# define INT8_TYPE signed char -# endif -#endif -#ifndef LONGDOUBLE_TYPE -# define LONGDOUBLE_TYPE long double -#endif -typedef sqlite_int64 i64; /* 8-byte signed integer */ -typedef sqlite_uint64 u64; /* 8-byte unsigned integer */ -typedef UINT32_TYPE u32; /* 4-byte unsigned integer */ -typedef UINT16_TYPE u16; /* 2-byte unsigned integer */ -typedef INT16_TYPE i16; /* 2-byte signed integer */ -typedef UINT8_TYPE u8; /* 1-byte unsigned integer */ -typedef INT8_TYPE i8; /* 1-byte signed integer */ - -/* -** SQLITE_MAX_U32 is a u64 constant that is the maximum u64 value -** that can be stored in a u32 without loss of data. The value -** is 0x00000000ffffffff. But because of quirks of some compilers, we -** have to specify the value in the less intuitive manner shown: -*/ -#define SQLITE_MAX_U32 ((((u64)1)<<32)-1) - -/* -** The datatype used to store estimates of the number of rows in a -** table or index. This is an unsigned integer type. For 99.9% of -** the world, a 32-bit integer is sufficient. But a 64-bit integer -** can be used at compile-time if desired. -*/ -#ifdef SQLITE_64BIT_STATS - typedef u64 tRowcnt; /* 64-bit only if requested at compile-time */ -#else - typedef u32 tRowcnt; /* 32-bit is the default */ -#endif - -/* -** Macros to determine whether the machine is big or little endian, -** evaluated at runtime. -*/ -#ifdef SQLITE_AMALGAMATION -const int sqlite3one = 1; -#else -extern const int sqlite3one; -#endif -#if defined(i386) || defined(__i386__) || defined(_M_IX86)\ - || defined(__x86_64) || defined(__x86_64__) -# define SQLITE_BIGENDIAN 0 -# define SQLITE_LITTLEENDIAN 1 -# define SQLITE_UTF16NATIVE SQLITE_UTF16LE -#else -# define SQLITE_BIGENDIAN (*(char *)(&sqlite3one)==0) -# define SQLITE_LITTLEENDIAN (*(char *)(&sqlite3one)==1) -# define SQLITE_UTF16NATIVE (SQLITE_BIGENDIAN?SQLITE_UTF16BE:SQLITE_UTF16LE) -#endif - -/* -** Constants for the largest and smallest possible 64-bit signed integers. -** These macros are designed to work correctly on both 32-bit and 64-bit -** compilers. -*/ -#define LARGEST_INT64 (0xffffffff|(((i64)0x7fffffff)<<32)) -#define SMALLEST_INT64 (((i64)-1) - LARGEST_INT64) - -/* -** Round up a number to the next larger multiple of 8. This is used -** to force 8-byte alignment on 64-bit architectures. -*/ -#define ROUND8(x) (((x)+7)&~7) - -/* -** Round down to the nearest multiple of 8 -*/ -#define ROUNDDOWN8(x) ((x)&~7) - -/* -** Assert that the pointer X is aligned to an 8-byte boundary. This -** macro is used only within assert() to verify that the code gets -** all alignment restrictions correct. -** -** Except, if SQLITE_4_BYTE_ALIGNED_MALLOC is defined, then the -** underlying malloc() implemention might return us 4-byte aligned -** pointers. In that case, only verify 4-byte alignment. -*/ -#ifdef SQLITE_4_BYTE_ALIGNED_MALLOC -# define EIGHT_BYTE_ALIGNMENT(X) ((((char*)(X) - (char*)0)&3)==0) -#else -# define EIGHT_BYTE_ALIGNMENT(X) ((((char*)(X) - (char*)0)&7)==0) -#endif - - -/* -** An instance of the following structure is used to store the busy-handler -** callback for a given sqlite handle. -** -** The sqlite.busyHandler member of the sqlite struct contains the busy -** callback for the database handle. Each pager opened via the sqlite -** handle is passed a pointer to sqlite.busyHandler. The busy-handler -** callback is currently invoked only from within pager.c. -*/ -typedef struct BusyHandler BusyHandler; -struct BusyHandler { - int (*xFunc)(void *,int); /* The busy callback */ - void *pArg; /* First arg to busy callback */ - int nBusy; /* Incremented with each busy call */ -}; - -/* -** Name of the master database table. The master database table -** is a special table that holds the names and attributes of all -** user tables and indices. -*/ -#define MASTER_NAME "sqlite_master" -#define TEMP_MASTER_NAME "sqlite_temp_master" - -/* -** The root-page of the master database table. -*/ -#define MASTER_ROOT 1 - -/* -** The name of the schema table. -*/ -#define SCHEMA_TABLE(x) ((!OMIT_TEMPDB)&&(x==1)?TEMP_MASTER_NAME:MASTER_NAME) - -/* -** A convenience macro that returns the number of elements in -** an array. -*/ -#define ArraySize(X) ((int)(sizeof(X)/sizeof(X[0]))) - -/* -** The following value as a destructor means to use sqlite3DbFree(). -** This is an internal extension to SQLITE_STATIC and SQLITE_TRANSIENT. -*/ -#define SQLITE_DYNAMIC ((sqlite3_destructor_type)sqlite3DbFree) - -/* -** When SQLITE_OMIT_WSD is defined, it means that the target platform does -** not support Writable Static Data (WSD) such as global and static variables. -** All variables must either be on the stack or dynamically allocated from -** the heap. When WSD is unsupported, the variable declarations scattered -** throughout the SQLite code must become constants instead. The SQLITE_WSD -** macro is used for this purpose. And instead of referencing the variable -** directly, we use its constant as a key to lookup the run-time allocated -** buffer that holds real variable. The constant is also the initializer -** for the run-time allocated buffer. -** -** In the usual case where WSD is supported, the SQLITE_WSD and GLOBAL -** macros become no-ops and have zero performance impact. -*/ -#ifdef SQLITE_OMIT_WSD - #define SQLITE_WSD const - #define GLOBAL(t,v) (*(t*)sqlite3_wsd_find((void*)&(v), sizeof(v))) - #define sqlite3GlobalConfig GLOBAL(struct Sqlite3Config, sqlite3Config) - int sqlite3_wsd_init(int N, int J); - void *sqlite3_wsd_find(void *K, int L); -#else - #define SQLITE_WSD - #define GLOBAL(t,v) v - #define sqlite3GlobalConfig sqlite3Config -#endif - -/* -** The following macros are used to suppress compiler warnings and to -** make it clear to human readers when a function parameter is deliberately -** left unused within the body of a function. This usually happens when -** a function is called via a function pointer. For example the -** implementation of an SQL aggregate step callback may not use the -** parameter indicating the number of arguments passed to the aggregate, -** if it knows that this is enforced elsewhere. -** -** When a function parameter is not used at all within the body of a function, -** it is generally named "NotUsed" or "NotUsed2" to make things even clearer. -** However, these macros may also be used to suppress warnings related to -** parameters that may or may not be used depending on compilation options. -** For example those parameters only used in assert() statements. In these -** cases the parameters are named as per the usual conventions. -*/ -#define UNUSED_PARAMETER(x) (void)(x) -#define UNUSED_PARAMETER2(x,y) UNUSED_PARAMETER(x),UNUSED_PARAMETER(y) - -/* -** Forward references to structures -*/ -typedef struct AggInfo AggInfo; -typedef struct AuthContext AuthContext; -typedef struct AutoincInfo AutoincInfo; -typedef struct Bitvec Bitvec; -typedef struct CollSeq CollSeq; -typedef struct Column Column; -typedef struct Db Db; -typedef struct Schema Schema; -typedef struct Expr Expr; -typedef struct ExprList ExprList; -typedef struct ExprSpan ExprSpan; -typedef struct FKey FKey; -typedef struct FuncDestructor FuncDestructor; -typedef struct FuncDef FuncDef; -typedef struct FuncDefHash FuncDefHash; -typedef struct IdList IdList; -typedef struct Index Index; -typedef struct IndexSample IndexSample; -typedef struct KeyClass KeyClass; -typedef struct KeyInfo KeyInfo; -typedef struct Lookaside Lookaside; -typedef struct LookasideSlot LookasideSlot; -typedef struct Module Module; -typedef struct NameContext NameContext; -typedef struct Parse Parse; -typedef struct RowSet RowSet; -typedef struct Savepoint Savepoint; -typedef struct Select Select; -typedef struct SrcList SrcList; -typedef struct StrAccum StrAccum; -typedef struct Table Table; -typedef struct TableLock TableLock; -typedef struct Token Token; -typedef struct Trigger Trigger; -typedef struct TriggerPrg TriggerPrg; -typedef struct TriggerStep TriggerStep; -typedef struct UnpackedRecord UnpackedRecord; -typedef struct VTable VTable; -typedef struct VtabCtx VtabCtx; -typedef struct Walker Walker; -typedef struct WherePlan WherePlan; -typedef struct WhereInfo WhereInfo; -typedef struct WhereLevel WhereLevel; - -/* -** Defer sourcing vdbe.h and btree.h until after the "u8" and -** "BusyHandler" typedefs. vdbe.h also requires a few of the opaque -** pointer types (i.e. FuncDef) defined above. -*/ -#include "btree.h" -#include "vdbe.h" -#include "pager.h" -#include "pcache.h" - -#include "os.h" -#include "mutex.h" - - -/* -** Each database file to be accessed by the system is an instance -** of the following structure. There are normally two of these structures -** in the sqlite.aDb[] array. aDb[0] is the main database file and -** aDb[1] is the database file used to hold temporary tables. Additional -** databases may be attached. -*/ -struct Db { - char *zName; /* Name of this database */ - Btree *pBt; /* The B*Tree structure for this database file */ - u8 inTrans; /* 0: not writable. 1: Transaction. 2: Checkpoint */ - u8 safety_level; /* How aggressive at syncing data to disk */ - Schema *pSchema; /* Pointer to database schema (possibly shared) */ -}; - -/* -** An instance of the following structure stores a database schema. -** -** Most Schema objects are associated with a Btree. The exception is -** the Schema for the TEMP databaes (sqlite3.aDb[1]) which is free-standing. -** In shared cache mode, a single Schema object can be shared by multiple -** Btrees that refer to the same underlying BtShared object. -** -** Schema objects are automatically deallocated when the last Btree that -** references them is destroyed. The TEMP Schema is manually freed by -** sqlite3_close(). -* -** A thread must be holding a mutex on the corresponding Btree in order -** to access Schema content. This implies that the thread must also be -** holding a mutex on the sqlite3 connection pointer that owns the Btree. -** For a TEMP Schema, only the connection mutex is required. -*/ -struct Schema { - int schema_cookie; /* Database schema version number for this file */ - int iGeneration; /* Generation counter. Incremented with each change */ - Hash tblHash; /* All tables indexed by name */ - Hash idxHash; /* All (named) indices indexed by name */ - Hash trigHash; /* All triggers indexed by name */ - Hash fkeyHash; /* All foreign keys by referenced table name */ - Table *pSeqTab; /* The sqlite_sequence table used by AUTOINCREMENT */ - u8 file_format; /* Schema format version for this file */ - u8 enc; /* Text encoding used by this database */ - u16 flags; /* Flags associated with this schema */ - int cache_size; /* Number of pages to use in the cache */ -}; - -/* -** These macros can be used to test, set, or clear bits in the -** Db.pSchema->flags field. -*/ -#define DbHasProperty(D,I,P) (((D)->aDb[I].pSchema->flags&(P))==(P)) -#define DbHasAnyProperty(D,I,P) (((D)->aDb[I].pSchema->flags&(P))!=0) -#define DbSetProperty(D,I,P) (D)->aDb[I].pSchema->flags|=(P) -#define DbClearProperty(D,I,P) (D)->aDb[I].pSchema->flags&=~(P) - -/* -** Allowed values for the DB.pSchema->flags field. -** -** The DB_SchemaLoaded flag is set after the database schema has been -** read into internal hash tables. -** -** DB_UnresetViews means that one or more views have column names that -** have been filled out. If the schema changes, these column names might -** changes and so the view will need to be reset. -*/ -#define DB_SchemaLoaded 0x0001 /* The schema has been loaded */ -#define DB_UnresetViews 0x0002 /* Some views have defined column names */ -#define DB_Empty 0x0004 /* The file is empty (length 0 bytes) */ - -/* -** The number of different kinds of things that can be limited -** using the sqlite3_limit() interface. -*/ -#define SQLITE_N_LIMIT (SQLITE_LIMIT_TRIGGER_DEPTH+1) - -/* -** Lookaside malloc is a set of fixed-size buffers that can be used -** to satisfy small transient memory allocation requests for objects -** associated with a particular database connection. The use of -** lookaside malloc provides a significant performance enhancement -** (approx 10%) by avoiding numerous malloc/free requests while parsing -** SQL statements. -** -** The Lookaside structure holds configuration information about the -** lookaside malloc subsystem. Each available memory allocation in -** the lookaside subsystem is stored on a linked list of LookasideSlot -** objects. -** -** Lookaside allocations are only allowed for objects that are associated -** with a particular database connection. Hence, schema information cannot -** be stored in lookaside because in shared cache mode the schema information -** is shared by multiple database connections. Therefore, while parsing -** schema information, the Lookaside.bEnabled flag is cleared so that -** lookaside allocations are not used to construct the schema objects. -*/ -struct Lookaside { - u16 sz; /* Size of each buffer in bytes */ - u8 bEnabled; /* False to disable new lookaside allocations */ - u8 bMalloced; /* True if pStart obtained from sqlite3_malloc() */ - int nOut; /* Number of buffers currently checked out */ - int mxOut; /* Highwater mark for nOut */ - int anStat[3]; /* 0: hits. 1: size misses. 2: full misses */ - LookasideSlot *pFree; /* List of available buffers */ - void *pStart; /* First byte of available memory space */ - void *pEnd; /* First byte past end of available space */ -}; -struct LookasideSlot { - LookasideSlot *pNext; /* Next buffer in the list of free buffers */ -}; - -/* -** A hash table for function definitions. -** -** Hash each FuncDef structure into one of the FuncDefHash.a[] slots. -** Collisions are on the FuncDef.pHash chain. -*/ -struct FuncDefHash { - FuncDef *a[23]; /* Hash table for functions */ -}; - -/* -** Each database connection is an instance of the following structure. -** -** The sqlite.lastRowid records the last insert rowid generated by an -** insert statement. Inserts on views do not affect its value. Each -** trigger has its own context, so that lastRowid can be updated inside -** triggers as usual. The previous value will be restored once the trigger -** exits. Upon entering a before or instead of trigger, lastRowid is no -** longer (since after version 2.8.12) reset to -1. -** -** The sqlite.nChange does not count changes within triggers and keeps no -** context. It is reset at start of sqlite3_exec. -** The sqlite.lsChange represents the number of changes made by the last -** insert, update, or delete statement. It remains constant throughout the -** length of a statement and is then updated by OP_SetCounts. It keeps a -** context stack just like lastRowid so that the count of changes -** within a trigger is not seen outside the trigger. Changes to views do not -** affect the value of lsChange. -** The sqlite.csChange keeps track of the number of current changes (since -** the last statement) and is used to update sqlite_lsChange. -** -** The member variables sqlite.errCode, sqlite.zErrMsg and sqlite.zErrMsg16 -** store the most recent error code and, if applicable, string. The -** internal function sqlite3Error() is used to set these variables -** consistently. -*/ -struct sqlite3 { - sqlite3_vfs *pVfs; /* OS Interface */ - int nDb; /* Number of backends currently in use */ - Db *aDb; /* All backends */ - int flags; /* Miscellaneous flags. See below */ - unsigned int openFlags; /* Flags passed to sqlite3_vfs.xOpen() */ - int errCode; /* Most recent error code (SQLITE_*) */ - int errMask; /* & result codes with this before returning */ - u8 autoCommit; /* The auto-commit flag. */ - u8 temp_store; /* 1: file 2: memory 0: default */ - u8 mallocFailed; /* True if we have seen a malloc failure */ - u8 dfltLockMode; /* Default locking-mode for attached dbs */ - signed char nextAutovac; /* Autovac setting after VACUUM if >=0 */ - u8 suppressErr; /* Do not issue error messages if true */ - u8 vtabOnConflict; /* Value to return for s3_vtab_on_conflict() */ - int nextPagesize; /* Pagesize after VACUUM if >0 */ - int nTable; /* Number of tables in the database */ - CollSeq *pDfltColl; /* The default collating sequence (BINARY) */ - i64 lastRowid; /* ROWID of most recent insert (see above) */ - u32 magic; /* Magic number for detect library misuse */ - int nChange; /* Value returned by sqlite3_changes() */ - int nTotalChange; /* Value returned by sqlite3_total_changes() */ - sqlite3_mutex *mutex; /* Connection mutex */ - int aLimit[SQLITE_N_LIMIT]; /* Limits */ - struct sqlite3InitInfo { /* Information used during initialization */ - int iDb; /* When back is being initialized */ - int newTnum; /* Rootpage of table being initialized */ - u8 busy; /* TRUE if currently initializing */ - u8 orphanTrigger; /* Last statement is orphaned TEMP trigger */ - } init; - int nExtension; /* Number of loaded extensions */ - void **aExtension; /* Array of shared library handles */ - struct Vdbe *pVdbe; /* List of active virtual machines */ - int activeVdbeCnt; /* Number of VDBEs currently executing */ - int writeVdbeCnt; /* Number of active VDBEs that are writing */ - int vdbeExecCnt; /* Number of nested calls to VdbeExec() */ - void (*xTrace)(void*,const char*); /* Trace function */ - void *pTraceArg; /* Argument to the trace function */ - void (*xProfile)(void*,const char*,u64); /* Profiling function */ - void *pProfileArg; /* Argument to profile function */ - void *pCommitArg; /* Argument to xCommitCallback() */ - int (*xCommitCallback)(void*); /* Invoked at every commit. */ - void *pRollbackArg; /* Argument to xRollbackCallback() */ - void (*xRollbackCallback)(void*); /* Invoked at every commit. */ - void *pUpdateArg; - void (*xUpdateCallback)(void*,int, const char*,const char*,sqlite_int64); -#ifndef SQLITE_OMIT_WAL - int (*xWalCallback)(void *, sqlite3 *, const char *, int); - void *pWalArg; -#endif - void(*xCollNeeded)(void*,sqlite3*,int eTextRep,const char*); - void(*xCollNeeded16)(void*,sqlite3*,int eTextRep,const void*); - void *pCollNeededArg; - sqlite3_value *pErr; /* Most recent error message */ - char *zErrMsg; /* Most recent error message (UTF-8 encoded) */ - char *zErrMsg16; /* Most recent error message (UTF-16 encoded) */ - union { - volatile int isInterrupted; /* True if sqlite3_interrupt has been called */ - double notUsed1; /* Spacer */ - } u1; - Lookaside lookaside; /* Lookaside malloc configuration */ -#ifndef SQLITE_OMIT_AUTHORIZATION - int (*xAuth)(void*,int,const char*,const char*,const char*,const char*); - /* Access authorization function */ - void *pAuthArg; /* 1st argument to the access auth function */ -#endif -#ifndef SQLITE_OMIT_PROGRESS_CALLBACK - int (*xProgress)(void *); /* The progress callback */ - void *pProgressArg; /* Argument to the progress callback */ - int nProgressOps; /* Number of opcodes for progress callback */ -#endif -#ifndef SQLITE_OMIT_VIRTUALTABLE - Hash aModule; /* populated by sqlite3_create_module() */ - VtabCtx *pVtabCtx; /* Context for active vtab connect/create */ - VTable **aVTrans; /* Virtual tables with open transactions */ - int nVTrans; /* Allocated size of aVTrans */ - VTable *pDisconnect; /* Disconnect these in next sqlite3_prepare() */ -#endif - FuncDefHash aFunc; /* Hash table of connection functions */ - Hash aCollSeq; /* All collating sequences */ - BusyHandler busyHandler; /* Busy callback */ - int busyTimeout; /* Busy handler timeout, in msec */ - Db aDbStatic[2]; /* Static space for the 2 default backends */ - Savepoint *pSavepoint; /* List of active savepoints */ - int nSavepoint; /* Number of non-transaction savepoints */ - int nStatement; /* Number of nested statement-transactions */ - u8 isTransactionSavepoint; /* True if the outermost savepoint is a TS */ - i64 nDeferredCons; /* Net deferred constraints this transaction. */ - int *pnBytesFreed; /* If not NULL, increment this in DbFree() */ - -#ifdef SQLITE_ENABLE_UNLOCK_NOTIFY - /* The following variables are all protected by the STATIC_MASTER - ** mutex, not by sqlite3.mutex. They are used by code in notify.c. - ** - ** When X.pUnlockConnection==Y, that means that X is waiting for Y to - ** unlock so that it can proceed. - ** - ** When X.pBlockingConnection==Y, that means that something that X tried - ** tried to do recently failed with an SQLITE_LOCKED error due to locks - ** held by Y. - */ - sqlite3 *pBlockingConnection; /* Connection that caused SQLITE_LOCKED */ - sqlite3 *pUnlockConnection; /* Connection to watch for unlock */ - void *pUnlockArg; /* Argument to xUnlockNotify */ - void (*xUnlockNotify)(void **, int); /* Unlock notify callback */ - sqlite3 *pNextBlocked; /* Next in list of all blocked connections */ -#endif -}; - -/* -** A macro to discover the encoding of a database. -*/ -#define ENC(db) ((db)->aDb[0].pSchema->enc) - -/* -** Possible values for the sqlite3.flags. -*/ -#define SQLITE_VdbeTrace 0x00000100 /* True to trace VDBE execution */ -#define SQLITE_InternChanges 0x00000200 /* Uncommitted Hash table changes */ -#define SQLITE_FullColNames 0x00000400 /* Show full column names on SELECT */ -#define SQLITE_ShortColNames 0x00000800 /* Show short columns names */ -#define SQLITE_CountRows 0x00001000 /* Count rows changed by INSERT, */ - /* DELETE, or UPDATE and return */ - /* the count using a callback. */ -#define SQLITE_NullCallback 0x00002000 /* Invoke the callback once if the */ - /* result set is empty */ -#define SQLITE_SqlTrace 0x00004000 /* Debug print SQL as it executes */ -#define SQLITE_VdbeListing 0x00008000 /* Debug listings of VDBE programs */ -#define SQLITE_WriteSchema 0x00010000 /* OK to update SQLITE_MASTER */ -#define SQLITE_NoReadlock 0x00020000 /* Readlocks are omitted when - ** accessing read-only databases */ -#define SQLITE_IgnoreChecks 0x00040000 /* Do not enforce check constraints */ -#define SQLITE_ReadUncommitted 0x0080000 /* For shared-cache mode */ -#define SQLITE_LegacyFileFmt 0x00100000 /* Create new databases in format 1 */ -#define SQLITE_FullFSync 0x00200000 /* Use full fsync on the backend */ -#define SQLITE_CkptFullFSync 0x00400000 /* Use full fsync for checkpoint */ -#define SQLITE_RecoveryMode 0x00800000 /* Ignore schema errors */ -#define SQLITE_ReverseOrder 0x01000000 /* Reverse unordered SELECTs */ -#define SQLITE_RecTriggers 0x02000000 /* Enable recursive triggers */ -#define SQLITE_ForeignKeys 0x04000000 /* Enforce foreign key constraints */ -#define SQLITE_AutoIndex 0x08000000 /* Enable automatic indexes */ -#define SQLITE_PreferBuiltin 0x10000000 /* Preference to built-in funcs */ -#define SQLITE_LoadExtension 0x20000000 /* Enable load_extension */ -#define SQLITE_EnableTrigger 0x40000000 /* True to enable triggers */ - -/* -** Bits of the sqlite3.flags field that are used by the -** sqlite3_test_control(SQLITE_TESTCTRL_OPTIMIZATIONS,...) interface. -** These must be the low-order bits of the flags field. -*/ -#define SQLITE_QueryFlattener 0x01 /* Disable query flattening */ -#define SQLITE_ColumnCache 0x02 /* Disable the column cache */ -#define SQLITE_IndexSort 0x04 /* Disable indexes for sorting */ -#define SQLITE_IndexSearch 0x08 /* Disable indexes for searching */ -#define SQLITE_IndexCover 0x10 /* Disable index covering table */ -#define SQLITE_GroupByOrder 0x20 /* Disable GROUPBY cover of ORDERBY */ -#define SQLITE_FactorOutConst 0x40 /* Disable factoring out constants */ -#define SQLITE_IdxRealAsInt 0x80 /* Store REAL as INT in indices */ -#define SQLITE_DistinctOpt 0x80 /* DISTINCT using indexes */ -#define SQLITE_OptMask 0xff /* Mask of all disablable opts */ - -/* -** Possible values for the sqlite.magic field. -** The numbers are obtained at random and have no special meaning, other -** than being distinct from one another. -*/ -#define SQLITE_MAGIC_OPEN 0xa029a697 /* Database is open */ -#define SQLITE_MAGIC_CLOSED 0x9f3c2d33 /* Database is closed */ -#define SQLITE_MAGIC_SICK 0x4b771290 /* Error and awaiting close */ -#define SQLITE_MAGIC_BUSY 0xf03b7906 /* Database currently in use */ -#define SQLITE_MAGIC_ERROR 0xb5357930 /* An SQLITE_MISUSE error occurred */ - -/* -** Each SQL function is defined by an instance of the following -** structure. A pointer to this structure is stored in the sqlite.aFunc -** hash table. When multiple functions have the same name, the hash table -** points to a linked list of these structures. -*/ -struct FuncDef { - i16 nArg; /* Number of arguments. -1 means unlimited */ - u8 iPrefEnc; /* Preferred text encoding (SQLITE_UTF8, 16LE, 16BE) */ - u8 flags; /* Some combination of SQLITE_FUNC_* */ - void *pUserData; /* User data parameter */ - FuncDef *pNext; /* Next function with same name */ - void (*xFunc)(sqlite3_context*,int,sqlite3_value**); /* Regular function */ - void (*xStep)(sqlite3_context*,int,sqlite3_value**); /* Aggregate step */ - void (*xFinalize)(sqlite3_context*); /* Aggregate finalizer */ - char *zName; /* SQL name of the function. */ - FuncDef *pHash; /* Next with a different name but the same hash */ - FuncDestructor *pDestructor; /* Reference counted destructor function */ -}; - -/* -** This structure encapsulates a user-function destructor callback (as -** configured using create_function_v2()) and a reference counter. When -** create_function_v2() is called to create a function with a destructor, -** a single object of this type is allocated. FuncDestructor.nRef is set to -** the number of FuncDef objects created (either 1 or 3, depending on whether -** or not the specified encoding is SQLITE_ANY). The FuncDef.pDestructor -** member of each of the new FuncDef objects is set to point to the allocated -** FuncDestructor. -** -** Thereafter, when one of the FuncDef objects is deleted, the reference -** count on this object is decremented. When it reaches 0, the destructor -** is invoked and the FuncDestructor structure freed. -*/ -struct FuncDestructor { - int nRef; - void (*xDestroy)(void *); - void *pUserData; -}; - -/* -** Possible values for FuncDef.flags -*/ -#define SQLITE_FUNC_LIKE 0x01 /* Candidate for the LIKE optimization */ -#define SQLITE_FUNC_CASE 0x02 /* Case-sensitive LIKE-type function */ -#define SQLITE_FUNC_EPHEM 0x04 /* Ephemeral. Delete with VDBE */ -#define SQLITE_FUNC_NEEDCOLL 0x08 /* sqlite3GetFuncCollSeq() might be called */ -#define SQLITE_FUNC_PRIVATE 0x10 /* Allowed for internal use only */ -#define SQLITE_FUNC_COUNT 0x20 /* Built-in count(*) aggregate */ -#define SQLITE_FUNC_COALESCE 0x40 /* Built-in coalesce() or ifnull() function */ - -/* -** The following three macros, FUNCTION(), LIKEFUNC() and AGGREGATE() are -** used to create the initializers for the FuncDef structures. -** -** FUNCTION(zName, nArg, iArg, bNC, xFunc) -** Used to create a scalar function definition of a function zName -** implemented by C function xFunc that accepts nArg arguments. The -** value passed as iArg is cast to a (void*) and made available -** as the user-data (sqlite3_user_data()) for the function. If -** argument bNC is true, then the SQLITE_FUNC_NEEDCOLL flag is set. -** -** AGGREGATE(zName, nArg, iArg, bNC, xStep, xFinal) -** Used to create an aggregate function definition implemented by -** the C functions xStep and xFinal. The first four parameters -** are interpreted in the same way as the first 4 parameters to -** FUNCTION(). -** -** LIKEFUNC(zName, nArg, pArg, flags) -** Used to create a scalar function definition of a function zName -** that accepts nArg arguments and is implemented by a call to C -** function likeFunc. Argument pArg is cast to a (void *) and made -** available as the function user-data (sqlite3_user_data()). The -** FuncDef.flags variable is set to the value passed as the flags -** parameter. -*/ -#define FUNCTION(zName, nArg, iArg, bNC, xFunc) \ - {nArg, SQLITE_UTF8, bNC*SQLITE_FUNC_NEEDCOLL, \ - SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, #zName, 0, 0} -#define STR_FUNCTION(zName, nArg, pArg, bNC, xFunc) \ - {nArg, SQLITE_UTF8, bNC*SQLITE_FUNC_NEEDCOLL, \ - pArg, 0, xFunc, 0, 0, #zName, 0, 0} -#define LIKEFUNC(zName, nArg, arg, flags) \ - {nArg, SQLITE_UTF8, flags, (void *)arg, 0, likeFunc, 0, 0, #zName, 0, 0} -#define AGGREGATE(zName, nArg, arg, nc, xStep, xFinal) \ - {nArg, SQLITE_UTF8, nc*SQLITE_FUNC_NEEDCOLL, \ - SQLITE_INT_TO_PTR(arg), 0, 0, xStep,xFinal,#zName,0,0} - -/* -** All current savepoints are stored in a linked list starting at -** sqlite3.pSavepoint. The first element in the list is the most recently -** opened savepoint. Savepoints are added to the list by the vdbe -** OP_Savepoint instruction. -*/ -struct Savepoint { - char *zName; /* Savepoint name (nul-terminated) */ - i64 nDeferredCons; /* Number of deferred fk violations */ - Savepoint *pNext; /* Parent savepoint (if any) */ -}; - -/* -** The following are used as the second parameter to sqlite3Savepoint(), -** and as the P1 argument to the OP_Savepoint instruction. -*/ -#define SAVEPOINT_BEGIN 0 -#define SAVEPOINT_RELEASE 1 -#define SAVEPOINT_ROLLBACK 2 - - -/* -** Each SQLite module (virtual table definition) is defined by an -** instance of the following structure, stored in the sqlite3.aModule -** hash table. -*/ -struct Module { - const sqlite3_module *pModule; /* Callback pointers */ - const char *zName; /* Name passed to create_module() */ - void *pAux; /* pAux passed to create_module() */ - void (*xDestroy)(void *); /* Module destructor function */ -}; - -/* -** information about each column of an SQL table is held in an instance -** of this structure. -*/ -struct Column { - char *zName; /* Name of this column */ - Expr *pDflt; /* Default value of this column */ - char *zDflt; /* Original text of the default value */ - char *zType; /* Data type for this column */ - char *zColl; /* Collating sequence. If NULL, use the default */ - u8 notNull; /* True if there is a NOT NULL constraint */ - u8 isPrimKey; /* True if this column is part of the PRIMARY KEY */ - char affinity; /* One of the SQLITE_AFF_... values */ -#ifndef SQLITE_OMIT_VIRTUALTABLE - u8 isHidden; /* True if this column is 'hidden' */ -#endif -}; - -/* -** A "Collating Sequence" is defined by an instance of the following -** structure. Conceptually, a collating sequence consists of a name and -** a comparison routine that defines the order of that sequence. -** -** There may two separate implementations of the collation function, one -** that processes text in UTF-8 encoding (CollSeq.xCmp) and another that -** processes text encoded in UTF-16 (CollSeq.xCmp16), using the machine -** native byte order. When a collation sequence is invoked, SQLite selects -** the version that will require the least expensive encoding -** translations, if any. -** -** The CollSeq.pUser member variable is an extra parameter that passed in -** as the first argument to the UTF-8 comparison function, xCmp. -** CollSeq.pUser16 is the equivalent for the UTF-16 comparison function, -** xCmp16. -** -** If both CollSeq.xCmp and CollSeq.xCmp16 are NULL, it means that the -** collating sequence is undefined. Indices built on an undefined -** collating sequence may not be read or written. -*/ -struct CollSeq { - char *zName; /* Name of the collating sequence, UTF-8 encoded */ - u8 enc; /* Text encoding handled by xCmp() */ - u8 type; /* One of the SQLITE_COLL_... values below */ - void *pUser; /* First argument to xCmp() */ - int (*xCmp)(void*,int, const void*, int, const void*); - void (*xDel)(void*); /* Destructor for pUser */ -}; - -/* -** Allowed values of CollSeq.type: -*/ -#define SQLITE_COLL_BINARY 1 /* The default memcmp() collating sequence */ -#define SQLITE_COLL_NOCASE 2 /* The built-in NOCASE collating sequence */ -#define SQLITE_COLL_REVERSE 3 /* The built-in REVERSE collating sequence */ -#define SQLITE_COLL_USER 0 /* Any other user-defined collating sequence */ - -/* -** A sort order can be either ASC or DESC. -*/ -#define SQLITE_SO_ASC 0 /* Sort in ascending order */ -#define SQLITE_SO_DESC 1 /* Sort in ascending order */ - -/* -** Column affinity types. -** -** These used to have mnemonic name like 'i' for SQLITE_AFF_INTEGER and -** 't' for SQLITE_AFF_TEXT. But we can save a little space and improve -** the speed a little by numbering the values consecutively. -** -** But rather than start with 0 or 1, we begin with 'a'. That way, -** when multiple affinity types are concatenated into a string and -** used as the P4 operand, they will be more readable. -** -** Note also that the numeric types are grouped together so that testing -** for a numeric type is a single comparison. -*/ -#define SQLITE_AFF_TEXT 'a' -#define SQLITE_AFF_NONE 'b' -#define SQLITE_AFF_NUMERIC 'c' -#define SQLITE_AFF_INTEGER 'd' -#define SQLITE_AFF_REAL 'e' - -#define sqlite3IsNumericAffinity(X) ((X)>=SQLITE_AFF_NUMERIC) - -/* -** The SQLITE_AFF_MASK values masks off the significant bits of an -** affinity value. -*/ -#define SQLITE_AFF_MASK 0x67 - -/* -** Additional bit values that can be ORed with an affinity without -** changing the affinity. -*/ -#define SQLITE_JUMPIFNULL 0x08 /* jumps if either operand is NULL */ -#define SQLITE_STOREP2 0x10 /* Store result in reg[P2] rather than jump */ -#define SQLITE_NULLEQ 0x80 /* NULL=NULL */ - -/* -** An object of this type is created for each virtual table present in -** the database schema. -** -** If the database schema is shared, then there is one instance of this -** structure for each database connection (sqlite3*) that uses the shared -** schema. This is because each database connection requires its own unique -** instance of the sqlite3_vtab* handle used to access the virtual table -** implementation. sqlite3_vtab* handles can not be shared between -** database connections, even when the rest of the in-memory database -** schema is shared, as the implementation often stores the database -** connection handle passed to it via the xConnect() or xCreate() method -** during initialization internally. This database connection handle may -** then be used by the virtual table implementation to access real tables -** within the database. So that they appear as part of the callers -** transaction, these accesses need to be made via the same database -** connection as that used to execute SQL operations on the virtual table. -** -** All VTable objects that correspond to a single table in a shared -** database schema are initially stored in a linked-list pointed to by -** the Table.pVTable member variable of the corresponding Table object. -** When an sqlite3_prepare() operation is required to access the virtual -** table, it searches the list for the VTable that corresponds to the -** database connection doing the preparing so as to use the correct -** sqlite3_vtab* handle in the compiled query. -** -** When an in-memory Table object is deleted (for example when the -** schema is being reloaded for some reason), the VTable objects are not -** deleted and the sqlite3_vtab* handles are not xDisconnect()ed -** immediately. Instead, they are moved from the Table.pVTable list to -** another linked list headed by the sqlite3.pDisconnect member of the -** corresponding sqlite3 structure. They are then deleted/xDisconnected -** next time a statement is prepared using said sqlite3*. This is done -** to avoid deadlock issues involving multiple sqlite3.mutex mutexes. -** Refer to comments above function sqlite3VtabUnlockList() for an -** explanation as to why it is safe to add an entry to an sqlite3.pDisconnect -** list without holding the corresponding sqlite3.mutex mutex. -** -** The memory for objects of this type is always allocated by -** sqlite3DbMalloc(), using the connection handle stored in VTable.db as -** the first argument. -*/ -struct VTable { - sqlite3 *db; /* Database connection associated with this table */ - Module *pMod; /* Pointer to module implementation */ - sqlite3_vtab *pVtab; /* Pointer to vtab instance */ - int nRef; /* Number of pointers to this structure */ - u8 bConstraint; /* True if constraints are supported */ - int iSavepoint; /* Depth of the SAVEPOINT stack */ - VTable *pNext; /* Next in linked list (see above) */ -}; - -/* -** Each SQL table is represented in memory by an instance of the -** following structure. -** -** Table.zName is the name of the table. The case of the original -** CREATE TABLE statement is stored, but case is not significant for -** comparisons. -** -** Table.nCol is the number of columns in this table. Table.aCol is a -** pointer to an array of Column structures, one for each column. -** -** If the table has an INTEGER PRIMARY KEY, then Table.iPKey is the index of -** the column that is that key. Otherwise Table.iPKey is negative. Note -** that the datatype of the PRIMARY KEY must be INTEGER for this field to -** be set. An INTEGER PRIMARY KEY is used as the rowid for each row of -** the table. If a table has no INTEGER PRIMARY KEY, then a random rowid -** is generated for each row of the table. TF_HasPrimaryKey is set if -** the table has any PRIMARY KEY, INTEGER or otherwise. -** -** Table.tnum is the page number for the root BTree page of the table in the -** database file. If Table.iDb is the index of the database table backend -** in sqlite.aDb[]. 0 is for the main database and 1 is for the file that -** holds temporary tables and indices. If TF_Ephemeral is set -** then the table is stored in a file that is automatically deleted -** when the VDBE cursor to the table is closed. In this case Table.tnum -** refers VDBE cursor number that holds the table open, not to the root -** page number. Transient tables are used to hold the results of a -** sub-query that appears instead of a real table name in the FROM clause -** of a SELECT statement. -*/ -struct Table { - char *zName; /* Name of the table or view */ - int iPKey; /* If not negative, use aCol[iPKey] as the primary key */ - int nCol; /* Number of columns in this table */ - Column *aCol; /* Information about each column */ - Index *pIndex; /* List of SQL indexes on this table. */ - int tnum; /* Root BTree node for this table (see note above) */ - tRowcnt nRowEst; /* Estimated rows in table - from sqlite_stat1 table */ - Select *pSelect; /* NULL for tables. Points to definition if a view. */ - u16 nRef; /* Number of pointers to this Table */ - u8 tabFlags; /* Mask of TF_* values */ - u8 keyConf; /* What to do in case of uniqueness conflict on iPKey */ - FKey *pFKey; /* Linked list of all foreign keys in this table */ - char *zColAff; /* String defining the affinity of each column */ -#ifndef SQLITE_OMIT_CHECK - Expr *pCheck; /* The AND of all CHECK constraints */ -#endif -#ifndef SQLITE_OMIT_ALTERTABLE - int addColOffset; /* Offset in CREATE TABLE stmt to add a new column */ -#endif -#ifndef SQLITE_OMIT_VIRTUALTABLE - VTable *pVTable; /* List of VTable objects. */ - int nModuleArg; /* Number of arguments to the module */ - char **azModuleArg; /* Text of all module args. [0] is module name */ -#endif - Trigger *pTrigger; /* List of triggers stored in pSchema */ - Schema *pSchema; /* Schema that contains this table */ - Table *pNextZombie; /* Next on the Parse.pZombieTab list */ -}; - -/* -** Allowed values for Tabe.tabFlags. -*/ -#define TF_Readonly 0x01 /* Read-only system table */ -#define TF_Ephemeral 0x02 /* An ephemeral table */ -#define TF_HasPrimaryKey 0x04 /* Table has a primary key */ -#define TF_Autoincrement 0x08 /* Integer primary key is autoincrement */ -#define TF_Virtual 0x10 /* Is a virtual table */ -#define TF_NeedMetadata 0x20 /* aCol[].zType and aCol[].pColl missing */ - - - -/* -** Test to see whether or not a table is a virtual table. This is -** done as a macro so that it will be optimized out when virtual -** table support is omitted from the build. -*/ -#ifndef SQLITE_OMIT_VIRTUALTABLE -# define IsVirtual(X) (((X)->tabFlags & TF_Virtual)!=0) -# define IsHiddenColumn(X) ((X)->isHidden) -#else -# define IsVirtual(X) 0 -# define IsHiddenColumn(X) 0 -#endif - -/* -** Each foreign key constraint is an instance of the following structure. -** -** A foreign key is associated with two tables. The "from" table is -** the table that contains the REFERENCES clause that creates the foreign -** key. The "to" table is the table that is named in the REFERENCES clause. -** Consider this example: -** -** CREATE TABLE ex1( -** a INTEGER PRIMARY KEY, -** b INTEGER CONSTRAINT fk1 REFERENCES ex2(x) -** ); -** -** For foreign key "fk1", the from-table is "ex1" and the to-table is "ex2". -** -** Each REFERENCES clause generates an instance of the following structure -** which is attached to the from-table. The to-table need not exist when -** the from-table is created. The existence of the to-table is not checked. -*/ -struct FKey { - Table *pFrom; /* Table containing the REFERENCES clause (aka: Child) */ - FKey *pNextFrom; /* Next foreign key in pFrom */ - char *zTo; /* Name of table that the key points to (aka: Parent) */ - FKey *pNextTo; /* Next foreign key on table named zTo */ - FKey *pPrevTo; /* Previous foreign key on table named zTo */ - int nCol; /* Number of columns in this key */ - /* EV: R-30323-21917 */ - u8 isDeferred; /* True if constraint checking is deferred till COMMIT */ - u8 aAction[2]; /* ON DELETE and ON UPDATE actions, respectively */ - Trigger *apTrigger[2]; /* Triggers for aAction[] actions */ - struct sColMap { /* Mapping of columns in pFrom to columns in zTo */ - int iFrom; /* Index of column in pFrom */ - char *zCol; /* Name of column in zTo. If 0 use PRIMARY KEY */ - } aCol[1]; /* One entry for each of nCol column s */ -}; - -/* -** SQLite supports many different ways to resolve a constraint -** error. ROLLBACK processing means that a constraint violation -** causes the operation in process to fail and for the current transaction -** to be rolled back. ABORT processing means the operation in process -** fails and any prior changes from that one operation are backed out, -** but the transaction is not rolled back. FAIL processing means that -** the operation in progress stops and returns an error code. But prior -** changes due to the same operation are not backed out and no rollback -** occurs. IGNORE means that the particular row that caused the constraint -** error is not inserted or updated. Processing continues and no error -** is returned. REPLACE means that preexisting database rows that caused -** a UNIQUE constraint violation are removed so that the new insert or -** update can proceed. Processing continues and no error is reported. -** -** RESTRICT, SETNULL, and CASCADE actions apply only to foreign keys. -** RESTRICT is the same as ABORT for IMMEDIATE foreign keys and the -** same as ROLLBACK for DEFERRED keys. SETNULL means that the foreign -** key is set to NULL. CASCADE means that a DELETE or UPDATE of the -** referenced table row is propagated into the row that holds the -** foreign key. -** -** The following symbolic values are used to record which type -** of action to take. -*/ -#define OE_None 0 /* There is no constraint to check */ -#define OE_Rollback 1 /* Fail the operation and rollback the transaction */ -#define OE_Abort 2 /* Back out changes but do no rollback transaction */ -#define OE_Fail 3 /* Stop the operation but leave all prior changes */ -#define OE_Ignore 4 /* Ignore the error. Do not do the INSERT or UPDATE */ -#define OE_Replace 5 /* Delete existing record, then do INSERT or UPDATE */ - -#define OE_Restrict 6 /* OE_Abort for IMMEDIATE, OE_Rollback for DEFERRED */ -#define OE_SetNull 7 /* Set the foreign key value to NULL */ -#define OE_SetDflt 8 /* Set the foreign key value to its default */ -#define OE_Cascade 9 /* Cascade the changes */ - -#define OE_Default 99 /* Do whatever the default action is */ - - -/* -** An instance of the following structure is passed as the first -** argument to sqlite3VdbeKeyCompare and is used to control the -** comparison of the two index keys. -*/ -struct KeyInfo { - sqlite3 *db; /* The database connection */ - u8 enc; /* Text encoding - one of the SQLITE_UTF* values */ - u16 nField; /* Number of entries in aColl[] */ - u8 *aSortOrder; /* Sort order for each column. May be NULL */ - CollSeq *aColl[1]; /* Collating sequence for each term of the key */ -}; - -/* -** An instance of the following structure holds information about a -** single index record that has already been parsed out into individual -** values. -** -** A record is an object that contains one or more fields of data. -** Records are used to store the content of a table row and to store -** the key of an index. A blob encoding of a record is created by -** the OP_MakeRecord opcode of the VDBE and is disassembled by the -** OP_Column opcode. -** -** This structure holds a record that has already been disassembled -** into its constituent fields. -*/ -struct UnpackedRecord { - KeyInfo *pKeyInfo; /* Collation and sort-order information */ - u16 nField; /* Number of entries in apMem[] */ - u16 flags; /* Boolean settings. UNPACKED_... below */ - i64 rowid; /* Used by UNPACKED_PREFIX_SEARCH */ - Mem *aMem; /* Values */ -}; - -/* -** Allowed values of UnpackedRecord.flags -*/ -#define UNPACKED_NEED_FREE 0x0001 /* Memory is from sqlite3Malloc() */ -#define UNPACKED_NEED_DESTROY 0x0002 /* apMem[]s should all be destroyed */ -#define UNPACKED_IGNORE_ROWID 0x0004 /* Ignore trailing rowid on key1 */ -#define UNPACKED_INCRKEY 0x0008 /* Make this key an epsilon larger */ -#define UNPACKED_PREFIX_MATCH 0x0010 /* A prefix match is considered OK */ -#define UNPACKED_PREFIX_SEARCH 0x0020 /* A prefix match is considered OK */ - -/* -** Each SQL index is represented in memory by an -** instance of the following structure. -** -** The columns of the table that are to be indexed are described -** by the aiColumn[] field of this structure. For example, suppose -** we have the following table and index: -** -** CREATE TABLE Ex1(c1 int, c2 int, c3 text); -** CREATE INDEX Ex2 ON Ex1(c3,c1); -** -** In the Table structure describing Ex1, nCol==3 because there are -** three columns in the table. In the Index structure describing -** Ex2, nColumn==2 since 2 of the 3 columns of Ex1 are indexed. -** The value of aiColumn is {2, 0}. aiColumn[0]==2 because the -** first column to be indexed (c3) has an index of 2 in Ex1.aCol[]. -** The second column to be indexed (c1) has an index of 0 in -** Ex1.aCol[], hence Ex2.aiColumn[1]==0. -** -** The Index.onError field determines whether or not the indexed columns -** must be unique and what to do if they are not. When Index.onError=OE_None, -** it means this is not a unique index. Otherwise it is a unique index -** and the value of Index.onError indicate the which conflict resolution -** algorithm to employ whenever an attempt is made to insert a non-unique -** element. -*/ -struct Index { - char *zName; /* Name of this index */ - int nColumn; /* Number of columns in the table used by this index */ - int *aiColumn; /* Which columns are used by this index. 1st is 0 */ - tRowcnt *aiRowEst; /* Result of ANALYZE: Est. rows selected by each column */ - Table *pTable; /* The SQL table being indexed */ - int tnum; /* Page containing root of this index in database file */ - u8 onError; /* OE_Abort, OE_Ignore, OE_Replace, or OE_None */ - u8 autoIndex; /* True if is automatically created (ex: by UNIQUE) */ - u8 bUnordered; /* Use this index for == or IN queries only */ - char *zColAff; /* String defining the affinity of each column */ - Index *pNext; /* The next index associated with the same table */ - Schema *pSchema; /* Schema containing this index */ - u8 *aSortOrder; /* Array of size Index.nColumn. True==DESC, False==ASC */ - char **azColl; /* Array of collation sequence names for index */ -#ifdef SQLITE_ENABLE_STAT3 - int nSample; /* Number of elements in aSample[] */ - tRowcnt avgEq; /* Average nEq value for key values not in aSample */ - IndexSample *aSample; /* Samples of the left-most key */ -#endif -}; - -/* -** Each sample stored in the sqlite_stat3 table is represented in memory -** using a structure of this type. See documentation at the top of the -** analyze.c source file for additional information. -*/ -struct IndexSample { - union { - char *z; /* Value if eType is SQLITE_TEXT or SQLITE_BLOB */ - double r; /* Value if eType is SQLITE_FLOAT */ - i64 i; /* Value if eType is SQLITE_INTEGER */ - } u; - u8 eType; /* SQLITE_NULL, SQLITE_INTEGER ... etc. */ - int nByte; /* Size in byte of text or blob. */ - tRowcnt nEq; /* Est. number of rows where the key equals this sample */ - tRowcnt nLt; /* Est. number of rows where key is less than this sample */ - tRowcnt nDLt; /* Est. number of distinct keys less than this sample */ -}; - -/* -** Each token coming out of the lexer is an instance of -** this structure. Tokens are also used as part of an expression. -** -** Note if Token.z==0 then Token.dyn and Token.n are undefined and -** may contain random values. Do not make any assumptions about Token.dyn -** and Token.n when Token.z==0. -*/ -struct Token { - const char *z; /* Text of the token. Not NULL-terminated! */ - unsigned int n; /* Number of characters in this token */ -}; - -/* -** An instance of this structure contains information needed to generate -** code for a SELECT that contains aggregate functions. -** -** If Expr.op==TK_AGG_COLUMN or TK_AGG_FUNCTION then Expr.pAggInfo is a -** pointer to this structure. The Expr.iColumn field is the index in -** AggInfo.aCol[] or AggInfo.aFunc[] of information needed to generate -** code for that node. -** -** AggInfo.pGroupBy and AggInfo.aFunc.pExpr point to fields within the -** original Select structure that describes the SELECT statement. These -** fields do not need to be freed when deallocating the AggInfo structure. -*/ -struct AggInfo { - u8 directMode; /* Direct rendering mode means take data directly - ** from source tables rather than from accumulators */ - u8 useSortingIdx; /* In direct mode, reference the sorting index rather - ** than the source table */ - int sortingIdx; /* Cursor number of the sorting index */ - int sortingIdxPTab; /* Cursor number of pseudo-table */ - ExprList *pGroupBy; /* The group by clause */ - int nSortingColumn; /* Number of columns in the sorting index */ - struct AggInfo_col { /* For each column used in source tables */ - Table *pTab; /* Source table */ - int iTable; /* Cursor number of the source table */ - int iColumn; /* Column number within the source table */ - int iSorterColumn; /* Column number in the sorting index */ - int iMem; /* Memory location that acts as accumulator */ - Expr *pExpr; /* The original expression */ - } *aCol; - int nColumn; /* Number of used entries in aCol[] */ - int nColumnAlloc; /* Number of slots allocated for aCol[] */ - int nAccumulator; /* Number of columns that show through to the output. - ** Additional columns are used only as parameters to - ** aggregate functions */ - struct AggInfo_func { /* For each aggregate function */ - Expr *pExpr; /* Expression encoding the function */ - FuncDef *pFunc; /* The aggregate function implementation */ - int iMem; /* Memory location that acts as accumulator */ - int iDistinct; /* Ephemeral table used to enforce DISTINCT */ - } *aFunc; - int nFunc; /* Number of entries in aFunc[] */ - int nFuncAlloc; /* Number of slots allocated for aFunc[] */ -}; - -/* -** The datatype ynVar is a signed integer, either 16-bit or 32-bit. -** Usually it is 16-bits. But if SQLITE_MAX_VARIABLE_NUMBER is greater -** than 32767 we have to make it 32-bit. 16-bit is preferred because -** it uses less memory in the Expr object, which is a big memory user -** in systems with lots of prepared statements. And few applications -** need more than about 10 or 20 variables. But some extreme users want -** to have prepared statements with over 32767 variables, and for them -** the option is available (at compile-time). -*/ -#if SQLITE_MAX_VARIABLE_NUMBER<=32767 -typedef i16 ynVar; -#else -typedef int ynVar; -#endif - -/* -** Each node of an expression in the parse tree is an instance -** of this structure. -** -** Expr.op is the opcode. The integer parser token codes are reused -** as opcodes here. For example, the parser defines TK_GE to be an integer -** code representing the ">=" operator. This same integer code is reused -** to represent the greater-than-or-equal-to operator in the expression -** tree. -** -** If the expression is an SQL literal (TK_INTEGER, TK_FLOAT, TK_BLOB, -** or TK_STRING), then Expr.token contains the text of the SQL literal. If -** the expression is a variable (TK_VARIABLE), then Expr.token contains the -** variable name. Finally, if the expression is an SQL function (TK_FUNCTION), -** then Expr.token contains the name of the function. -** -** Expr.pRight and Expr.pLeft are the left and right subexpressions of a -** binary operator. Either or both may be NULL. -** -** Expr.x.pList is a list of arguments if the expression is an SQL function, -** a CASE expression or an IN expression of the form " IN (, ...)". -** Expr.x.pSelect is used if the expression is a sub-select or an expression of -** the form " IN (SELECT ...)". If the EP_xIsSelect bit is set in the -** Expr.flags mask, then Expr.x.pSelect is valid. Otherwise, Expr.x.pList is -** valid. -** -** An expression of the form ID or ID.ID refers to a column in a table. -** For such expressions, Expr.op is set to TK_COLUMN and Expr.iTable is -** the integer cursor number of a VDBE cursor pointing to that table and -** Expr.iColumn is the column number for the specific column. If the -** expression is used as a result in an aggregate SELECT, then the -** value is also stored in the Expr.iAgg column in the aggregate so that -** it can be accessed after all aggregates are computed. -** -** If the expression is an unbound variable marker (a question mark -** character '?' in the original SQL) then the Expr.iTable holds the index -** number for that variable. -** -** If the expression is a subquery then Expr.iColumn holds an integer -** register number containing the result of the subquery. If the -** subquery gives a constant result, then iTable is -1. If the subquery -** gives a different answer at different times during statement processing -** then iTable is the address of a subroutine that computes the subquery. -** -** If the Expr is of type OP_Column, and the table it is selecting from -** is a disk table or the "old.*" pseudo-table, then pTab points to the -** corresponding table definition. -** -** ALLOCATION NOTES: -** -** Expr objects can use a lot of memory space in database schema. To -** help reduce memory requirements, sometimes an Expr object will be -** truncated. And to reduce the number of memory allocations, sometimes -** two or more Expr objects will be stored in a single memory allocation, -** together with Expr.zToken strings. -** -** If the EP_Reduced and EP_TokenOnly flags are set when -** an Expr object is truncated. When EP_Reduced is set, then all -** the child Expr objects in the Expr.pLeft and Expr.pRight subtrees -** are contained within the same memory allocation. Note, however, that -** the subtrees in Expr.x.pList or Expr.x.pSelect are always separately -** allocated, regardless of whether or not EP_Reduced is set. -*/ -struct Expr { - u8 op; /* Operation performed by this node */ - char affinity; /* The affinity of the column or 0 if not a column */ - u16 flags; /* Various flags. EP_* See below */ - union { - char *zToken; /* Token value. Zero terminated and dequoted */ - int iValue; /* Non-negative integer value if EP_IntValue */ - } u; - - /* If the EP_TokenOnly flag is set in the Expr.flags mask, then no - ** space is allocated for the fields below this point. An attempt to - ** access them will result in a segfault or malfunction. - *********************************************************************/ - - Expr *pLeft; /* Left subnode */ - Expr *pRight; /* Right subnode */ - union { - ExprList *pList; /* Function arguments or in " IN ( IN ( and and