123 lines
2.2 KiB
C
123 lines
2.2 KiB
C
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// bin2c.c
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//
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// convert a binary file into a C source vector
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//
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// THE "BEER-WARE LICENSE" (Revision 3.1415):
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// sandro AT sigala DOT it wrote this file. As long as you retain this notice you can do
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// whatever you want with this stuff. If we meet some day, and you think this stuff is
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// worth it, you can buy me a beer in return. Sandro Sigala
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//
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// syntax: bin2c [-c] [-z] <input_file> <output_file>
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//
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// -c add the "const" keyword to definition
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// -z terminate the array with a zero (useful for embedded C strings)
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//
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// examples:
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// bin2c -c myimage.png myimage_png.cpp
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// bin2c -z sometext.txt sometext_txt.cpp
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#include <ctype.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#ifndef PATH_MAX
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#define PATH_MAX 1024
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#endif
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int useconst = 0;
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int zeroterminated = 0;
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int myfgetc(FILE *f)
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{
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int c = fgetc(f);
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if (c == EOF && zeroterminated)
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{
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zeroterminated = 0;
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return 0;
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}
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return c;
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}
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void process(const char *ifname, const char *ofname)
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{
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FILE *ifile, *ofile;
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ifile = fopen(ifname, "rb");
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if (ifile == NULL)
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{
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fprintf(stderr, "cannot open %s for reading\n", ifname);
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exit(1);
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}
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ofile = fopen(ofname, "wb");
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if (ofile == NULL)
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{
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fprintf(stderr, "cannot open %s for writing\n", ofname);
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exit(1);
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}
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char buf[PATH_MAX], *p;
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const char *cp;
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if ((cp = strrchr(ifname, '/')) != NULL)
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{
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++cp;
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} else {
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if ((cp = strrchr(ifname, '\\')) != NULL)
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++cp;
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else
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cp = ifname;
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}
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strcpy(buf, cp);
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for (p = buf; *p != '\0'; ++p)
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{
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if (!isalnum(*p))
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*p = '_';
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}
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fprintf(ofile, "static %sunsigned char %s[] = {\n", useconst ? "const " : "", buf);
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int c, col = 1;
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while ((c = myfgetc(ifile)) != EOF)
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{
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if (col >= 78 - 6)
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{
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fputc('\n', ofile);
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col = 1;
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}
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fprintf(ofile, "0x%.2x, ", c);
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col += 6;
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}
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fprintf(ofile, "\n};\n");
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fclose(ifile);
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fclose(ofile);
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}
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void usage(void)
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{
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fprintf(stderr, "usage: bin2c [-cz] <input_file> <output_file>\n");
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exit(1);
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}
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int main(int argc, char **argv)
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{
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while (argc > 3)
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{
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if (!strcmp(argv[1], "-c"))
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{
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useconst = 1;
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--argc;
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++argv;
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} else if (!strcmp(argv[1], "-z"))
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{
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zeroterminated = 1;
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--argc;
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++argv;
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} else {
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usage();
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}
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}
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if (argc != 3)
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{
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usage();
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}
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process(argv[1], argv[2]);
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return 0;
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}
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