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/*!A cross-platform build utility based on Lua
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright (C) 2015-present, Xmake Open Source Community.
*
* @author ruki
* @file socket_sendfile.c
*
*/
/* //////////////////////////////////////////////////////////////////////////////////////
* trace
*/
#define TB_TRACE_MODULE_NAME "socket_sendfile"
#define TB_TRACE_MODULE_DEBUG (0)
/* //////////////////////////////////////////////////////////////////////////////////////
* includes
*/
#include "prefix.h"
/* //////////////////////////////////////////////////////////////////////////////////////
* implementation
*/
// io.socket_sendfile(sock, file, start, last)
tb_int_t xm_io_socket_sendfile(lua_State *lua) {
tb_assert_and_check_return_val(lua, 0);
// check socket
if (!xm_lua_ispointer(lua, 1)) {
lua_pushinteger(lua, -1);
lua_pushliteral(lua, "invalid socket!");
return 2;
}
// check file
if (!lua_isuserdata(lua, 2)) {
lua_pushinteger(lua, -1);
lua_pushliteral(lua, "invalid file!");
return 2;
}
// get socket
tb_socket_ref_t sock = (tb_socket_ref_t)xm_lua_topointer(lua, 1);
tb_check_return_val(sock, 0);
// get file
xm_io_file_t *file = (xm_io_file_t *)lua_touserdata(lua, 2);
tb_check_return_val(file, 0);
// does not support stdfile
if (!xm_io_file_is_file(file) || !file->stream) {
lua_pushinteger(lua, -1);
lua_pushliteral(lua, "invalid file type!");
return 2;
}
// get file reference
tb_file_ref_t rawfile = tb_null;
if (!tb_stream_ctrl(file->stream, TB_STREAM_CTRL_FILE_GET_FILE, &rawfile) || !rawfile) {
lua_pushinteger(lua, -1);
lua_pushliteral(lua, "cannot get file reference!");
return 2;
}
// get file size
tb_hize_t filesize = tb_file_size(rawfile);
if (!filesize) {
lua_pushinteger(lua, -1);
lua_pushliteral(lua, "cannot send empty file!");
return 2;
}
// get start
tb_long_t start = 1;
if (lua_isnumber(lua, 3)) {
start = (tb_long_t)lua_tonumber(lua, 3);
}
if (start < 1 || start > filesize) {
lua_pushinteger(lua, -1);
lua_pushfstring(lua, "invalid start position(%d)!", (tb_int_t)start);
return 2;
}
// get last
tb_long_t last = (tb_long_t)filesize;
if (lua_isnumber(lua, 4)) {
last = (tb_long_t)lua_tonumber(lua, 4);
}
if (last < start - 1 || last > filesize + start - 1) {
lua_pushinteger(lua, -1);
lua_pushfstring(lua, "invalid last position(%d)!", (tb_int_t)last);
return 2;
}
// send file data
tb_long_t real = (tb_long_t)tb_socket_sendf(sock, rawfile, start - 1, last - start + 1);
lua_pushinteger(lua, (tb_int_t)real);
return 1;
}
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