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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 bin2c.c
*
*/
/* //////////////////////////////////////////////////////////////////////////////////////
* trace
*/
#define TB_TRACE_MODULE_NAME "bin2c"
#define TB_TRACE_MODULE_DEBUG (0)
/* //////////////////////////////////////////////////////////////////////////////////////
* includes
*/
#include "prefix.h"
/* //////////////////////////////////////////////////////////////////////////////////////
* macros
*/
#define XM_BIN2C_DATA_SIZE (8 * 1024)
#define XM_BIN2C_LINE_SIZE (4 * 1024)
#define XM_BIN2C_LINEWIDTH_MAX ((XM_BIN2C_LINE_SIZE - 2) / 6)
/* //////////////////////////////////////////////////////////////////////////////////////
* private implementation
*/
// optimized hex conversion table
static tb_char_t const *xm_binutils_bin2c_digits = "0123456789ABCDEF";
// inline hex conversion for better performance
static __tb_inline__ tb_void_t xm_binutils_bin2c_write_hex(tb_char_t *str, tb_byte_t value) {
str[0] = ' ';
str[1] = '0';
str[2] = 'x';
str[3] = xm_binutils_bin2c_digits[(value >> 4) & 15];
str[4] = xm_binutils_bin2c_digits[value & 15];
}
static tb_bool_t xm_binutils_bin2c_dump(tb_stream_ref_t istream,
tb_stream_ref_t ostream,
tb_int_t linewidth,
tb_bool_t nozeroend) {
tb_bool_t first = tb_true;
tb_bool_t zero_pending = tb_false;
tb_byte_t data[XM_BIN2C_DATA_SIZE];
tb_char_t line[XM_BIN2C_LINE_SIZE];
tb_size_t linesize = 0;
tb_size_t bytes_in_line = 0;
tb_size_t data_pos = 0;
tb_size_t data_size = 0;
tb_assert_and_check_return_val(linewidth > 0 && linewidth <= XM_BIN2C_LINEWIDTH_MAX, tb_false);
while (!tb_stream_beof(istream) || data_pos < data_size || zero_pending) {
// read a large chunk of data if buffer is empty
if (data_pos >= data_size) {
// handle pending zero terminator
if (zero_pending) {
data[0] = '\0';
data_size = 1;
data_pos = 0;
zero_pending = tb_false;
} else {
tb_hong_t left = tb_stream_left(istream);
tb_size_t to_read = (tb_size_t)tb_min(left, (tb_hong_t)XM_BIN2C_DATA_SIZE);
tb_check_break(to_read);
if (!tb_stream_bread(istream, data, to_read)) {
break;
}
data_size = to_read;
data_pos = 0;
// check if we need to add zero terminator at the end
if (!nozeroend && tb_stream_beof(istream)) {
if (data_size < XM_BIN2C_DATA_SIZE) {
// can add directly to current buffer
data[data_size++] = '\0';
} else {
// buffer is full, need to add zero in next iteration
zero_pending = tb_true;
}
}
}
}
// process bytes from buffer
while (data_pos < data_size) {
// check if we need a new line
if (bytes_in_line >= (tb_size_t)linewidth) {
// write line (tb_stream_bwrit_line will add newline automatically)
if (tb_stream_bwrit_line(ostream, line, linesize) < 0) {
return tb_false;
}
linesize = 0;
bytes_in_line = 0;
first = tb_false;
}
// ensure we have enough space in line buffer (6 chars per byte: ", 0xXX")
if (linesize + 6 > sizeof(line)) {
// flush partial line if buffer is full
if (linesize > 0) {
if (!tb_stream_bwrit(ostream, (tb_byte_t *)line, linesize)) {
return tb_false;
}
linesize = 0;
}
}
// add separator
if (bytes_in_line == 0 && first) {
line[linesize++] = ' ';
first = tb_false;
} else {
line[linesize++] = ',';
}
// write hex value (inline for performance)
xm_binutils_bin2c_write_hex(line + linesize, data[data_pos]);
linesize += 5;
bytes_in_line++;
data_pos++;
}
}
// flush remaining line
if (linesize > 0) {
// write line (tb_stream_bwrit_line will add newline automatically)
if (tb_stream_bwrit_line(ostream, line, linesize) < 0) {
return tb_false;
}
}
return tb_stream_beof(istream);
}
/* //////////////////////////////////////////////////////////////////////////////////////
* implementation
*/
/* generate c/c++ code from the binary file
*
* local ok, errors = binutils.bin2c(binaryfile, outputfile, linewidth, nozeroend)
*/
tb_int_t xm_binutils_bin2c(lua_State *lua) {
tb_assert_and_check_return_val(lua, 0);
// get the binaryfile
tb_char_t const *binaryfile = luaL_checkstring(lua, 1);
tb_check_return_val(binaryfile, 0);
// get the outputfile
tb_char_t const *outputfile = luaL_checkstring(lua, 2);
tb_check_return_val(outputfile, 0);
// get line width
tb_int_t linewidth = (tb_int_t)lua_tointeger(lua, 3);
// no zero end?
tb_bool_t nozeroend = (tb_bool_t)lua_toboolean(lua, 4);
// do dump
tb_bool_t ok = tb_false;
tb_stream_ref_t istream = tb_stream_init_from_file(binaryfile, TB_FILE_MODE_RO);
tb_stream_ref_t ostream = tb_stream_init_from_file(outputfile,
TB_FILE_MODE_RW | TB_FILE_MODE_CREAT | TB_FILE_MODE_TRUNC);
do {
if (!tb_stream_open(istream)) {
lua_pushboolean(lua, tb_false);
lua_pushfstring(lua, "bin2c: open %s failed", binaryfile);
break;
}
if (!tb_stream_open(ostream)) {
lua_pushboolean(lua, tb_false);
lua_pushfstring(lua, "bin2c: open %s failed", outputfile);
break;
}
if (!xm_binutils_bin2c_dump(istream, ostream, linewidth, nozeroend)) {
lua_pushboolean(lua, tb_false);
lua_pushfstring(lua, "bin2c: dump data failed");
break;
}
ok = tb_true;
lua_pushboolean(lua, ok);
} while (0);
if (istream) {
tb_stream_clos(istream);
}
istream = tb_null;
if (ostream) {
tb_stream_clos(ostream);
}
ostream = tb_null;
return ok ? 1 : 2;
}
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