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// bin2c.c
//
// convert a binary file into a C source vector
//
// put into the public domain by Sandro Sigala
//
// syntax: bin2c [-c] [-z] <input_file> <output_file>
//
// -c add the "const" keyword to definition
// -z terminate the array with a zero (useful for embedded C strings)
//
// examples:
// bin2c -c myimage.png myimage_png.cpp
// bin2c -z sometext.txt sometext_txt.cpp
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifndef PATH_MAX
#define PATH_MAX 1024
#endif
int useconst = 0;
int zeroterminated = 0;
int myfgetc(FILE *f)
{
int c = fgetc(f);
if (c == EOF && zeroterminated) {
zeroterminated = 0;
return 0;
}
return c;
}
void process(const char *ifname, const char *ofname)
{
FILE *ifile, *ofile;
ifile = fopen(ifname, "rb");
if (ifile == NULL) {
fprintf(stderr, "cannot open %s for reading\n", ifname);
exit(1);
}
ofile = fopen(ofname, "wb");
if (ofile == NULL) {
fprintf(stderr, "cannot open %s for writing\n", ofname);
exit(1);
}
char buf[PATH_MAX], *p;
const char *cp;
if ((cp = strrchr(ifname, '/')) != NULL)
++cp;
else {
if ((cp = strrchr(ifname, '\\')) != NULL)
++cp;
else
cp = ifname;
}
strcpy(buf, cp);
for (p = buf; *p != '\0'; ++p)
if (!isalnum(*p))
*p = '_';
fprintf(ofile, "static %sunsigned char %s[] = {\n", useconst ? "const " : "", buf);
int c, col = 1;
while ((c = myfgetc(ifile)) != EOF) {
if (col >= 78 - 6) {
fputc('\n', ofile);
col = 1;
}
fprintf(ofile, "0x%.2x, ", c);
col += 6;
}
fprintf(ofile, "\n};\n");
fclose(ifile);
fclose(ofile);
}
void usage(void)
{
fprintf(stderr, "usage: bin2c [-cz] <input_file> <output_file>\n");
exit(1);
}
int main(int argc, char **argv)
{
while (argc > 3) {
if (!strcmp(argv[1], "-c")) {
useconst = 1;
--argc;
++argv;
} else if (!strcmp(argv[1], "-z")) {
zeroterminated = 1;
--argc;
++argv;
} else {
usage();
}
}
if (argc != 3) {
usage();
}
process(argv[1], argv[2]);
return 0;
}
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