update to latest version of bin2c.c

I maintain it here:

https://github.com/rkitover/bin2c

In terms of functionality, this version is pretty much the same as the
original, just nicer argument handling, a usage screen, etc.
This commit is contained in:
Rafael Kitover 2016-11-18 09:08:09 -08:00
parent 902a7a7e0d
commit 13196c0748
1 changed files with 206 additions and 28 deletions
src/wx

View File

@ -1,49 +1,227 @@
/*
BSD 2-Clause License
Copyright (c) 2016, Rafael Kitover
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <stdio.h>
#include <stdarg.h>
#include <ctype.h>
#include <wchar.h>
#include <locale.h>
#include <unistd.h>
int main(int argc, char** argv) {
char* in_file_name = argv[1];
char* out_file_name = argv[2];
char* var_name = argv[3];
FILE* in_file = fopen(in_file_name, "rb");
char* in_file_err = !in_file ? strerror(errno) : NULL;
FILE* out_file = fopen(out_file_name, "w");
char* out_file_err = !out_file ? strerror(errno) : NULL;
unsigned char* buf = (unsigned char*)malloc(4096);
size_t bytes_read;
int file_pos = 0;
#define BUF_SIZE 4096
#define WBUF_SIZE BUF_SIZE * sizeof(wchar_t)
#define MSG_SIZE 256
if (!buf) return 1;
const char* version = "0.3";
if (!in_file) {
fprintf(stderr, "Can't open input file '%s': %s\n", in_file_name, in_file_err);
return 1;
const char* msg_prefix = "bin2c: ";
void format_perror(const char* fmt, va_list args) {
static char error_str[MSG_SIZE];
static char fmt_str[MSG_SIZE];
strcpy(fmt_str, msg_prefix);
strncat(fmt_str, fmt, MSG_SIZE - sizeof(msg_prefix));
vsnprintf(error_str, sizeof(error_str), fmt_str, args);
perror(error_str);
}
void die(const char* fmt, ...) {
va_list args;
va_start(args, fmt);
format_perror(fmt, args);
va_end(args);
exit(1);
}
void* safe_malloc(size_t size) {
void* allocated;
if (!(allocated = malloc(size)))
die("out of memory");
return allocated;
}
char* file_name_to_identifier(const char* file_name_cstr) {
wchar_t* file_name = safe_malloc(WBUF_SIZE);
wchar_t* identifier = safe_malloc(WBUF_SIZE);
char* identifier_cstr = safe_malloc(WBUF_SIZE);
wchar_t* file_name_ptr = file_name;
wchar_t* identifier_ptr = identifier;
wchar_t* file_name_end = NULL;
size_t file_name_len = 0;
int between_tokens = 0;
if ((file_name_len = mbstowcs(file_name, file_name_cstr, BUF_SIZE - 1)) == -1)
die("cannot convert '%s' to locale representation", file_name_cstr);
*identifier = 0;
file_name_end = file_name + file_name_len + 1;
while (file_name_ptr < file_name_end) {
if (iswalnum(*file_name_ptr)) {
*identifier_ptr = *file_name_ptr;
identifier_ptr++;
between_tokens = 0;
}
else if (!between_tokens) {
mbstowcs(identifier_ptr, "_", 1);
identifier_ptr++;
between_tokens = 1;
}
file_name_ptr++;
}
if (!out_file) {
fprintf(stderr, "Can't open '%s' for writing: %s\n", out_file_name, out_file_err);
return 1;
}
/* terminate identifier, on _ or on next position */
if (between_tokens) identifier_ptr--;
fprintf(out_file, "/* generated from %s: do not edit */\n"
"const unsigned char %s[] = {\n", in_file_name, var_name);
*identifier_ptr = 0;
while ((bytes_read = fread(buf, 1, 4096, in_file))) {
int i = 0;
for (; i < bytes_read; i++) {
char* comma = feof(in_file) && i == bytes_read - 1 ? "" : ",";
if (wcstombs(identifier_cstr, identifier, WBUF_SIZE - 1) == -1)
die("failed to convert wide character string to bytes");
fprintf(out_file, "0x%02x%s", buf[i], comma);
free(file_name);
free(identifier);
if (++file_pos % 16 == 0) fprintf(out_file, "\n");
return identifier_cstr;
}
void usage(int err) {
FILE* stream = err ? stderr : stdout;
fputs(
"Usage: bin2c [IN_FILE [OUT_FILE [VAR_NAME]]]\n"
"Write IN_FILE as a C array of bytes named VAR_NAME into OUT_FILE.\n"
"\n"
"By default, STDIN is the input and STDOUT is the output, either can be explicitly specified with -.\n"
"\n"
"The default VAR_NAME is the IN_FILE name converted to an identifier, or \"resource_data\"\n"
"if it's STDIN.\n"
"\n"
" -h, --help Show this help screen and exit.\n"
" -v, --version Print version and exit.\n"
"\n"
"Examples:\n"
" # write data from file ./compiled-resources.xrs into header file ./resources.h using variable name resource_data\n"
" bin2c ./compiled-resources.xrs ./resources.h resource_data\n"
" # write data from STDIN to STDOUT with \"resource_data\" as the VAR_NAME\n"
" bin2c\n"
" # write data from ./compiled-resources.xrs to STDOUT with \"compiled_resources_xrs\" as the VAR_NAME\n"
" bin2c ./compiled-resources.xrs\n"
" # write data from ./compiled-resources.xrs to ./resources.h with \"compiled_resources_xrs\" as the VAR_NAME\n"
" bin2c ./compiled-resources.xrs ./resources.h\n"
"\n"
"Project homepage and documentation: <http://github.com/rkitover/bin2c>\n"
, stream);
}
void die_usage(const char* fmt, ...) {
static char fmt_str[MSG_SIZE];
va_list args;
va_start(args, fmt);
strcpy(fmt_str, msg_prefix);
strncat(fmt_str, fmt, MSG_SIZE - sizeof(msg_prefix));
strcat(fmt_str, "\n");
vfprintf(stderr, fmt_str, args);
va_end(args);
usage(1);
exit(1);
}
void exit_usage(int exit_code) {
usage(exit_code);
exit(exit_code);
}
int main(int argc, const char** argv) {
const char* usage_opts[] = {"-h", "--help"};
const char* version_opts[] = {"-v", "--version"};
const char* in_file_name = argc >= 2 ? argv[1] : NULL;
const char* out_file_name = argc >= 3 ? argv[2] : NULL;
const char* var_name = argc >= 4 ? argv[3] : NULL;
char* computed_identifier = NULL;
int i = 0, file_pos = 0, in_fd = -1;
size_t bytes_read = 0;
unsigned char* buf = safe_malloc(BUF_SIZE);
FILE *in_file, *out_file;
setlocale(LC_ALL, "");
if (argc > 4)
die_usage("invalid number of arguments");
if (argc >= 2) {
for (i = 0; i < (sizeof(usage_opts)/sizeof(char*)); i++) {
if (!strcmp(argv[1], usage_opts[i])) exit_usage(0);
}
for (i = 0; i < (sizeof(version_opts)/sizeof(char*)); i++) {
if (!strcmp(argv[1], version_opts[i])) {
printf("bin2c %s\n", version);
return 0;
}
}
}
fprintf(out_file, "};\n");
if (!(in_file = !in_file_name || !strcmp(in_file_name, "-") ? stdin : fopen(in_file_name, "rb")))
die("can't open input file '%s'", in_file_name);
if (!(out_file = !out_file_name || !strcmp(out_file_name, "-") ? stdout : fopen(out_file_name, "w")))
die("can't open '%s' for writing", out_file_name);
if (in_file_name && !var_name)
var_name = computed_identifier = file_name_to_identifier(in_file_name);
fprintf(out_file, "/* generated from %s: do not edit */\n"
"const unsigned char %s[] = {\n",
in_file_name ? in_file_name : "resource data",
var_name ? var_name : "resource_data"
);
in_fd = fileno(in_file);
while ((bytes_read = read(in_fd, buf, BUF_SIZE))) {
for (i = 0; i < bytes_read; i++) {
char* comma = bytes_read < BUF_SIZE && i == bytes_read - 1 ? "" : ",";
fprintf(out_file, "0x%02x%s", buf[i], comma);
if (++file_pos % 16 == 0) fputc('\n', out_file);
}
}
fputs("};\n", out_file);
free(buf);
free(computed_identifier);
fclose(in_file);
fclose(out_file);