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/* hexdump.c -- an "xxd -i" workalike for dumping binary files as source code */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static int string;
static int
hexdump(FILE *fo, FILE *fi)
{
int c, n;
if (string)
fprintf(fo, "\"");
n = 0;
c = fgetc(fi);
while (c != -1)
{
n += fprintf(fo, string ? "\\x%02x" : "%d,", c);
if (n > 72) {
fprintf(fo, string ? "\"\n\"" : "\n");
n = 0;
}
c = fgetc(fi);
}
if (string)
fprintf(fo, "\"\n");
return n;
}
int
main(int argc, char **argv)
{
FILE *fo;
FILE *fi;
char filename[256];
char *basename;
char *p;
int i, optind, size;
if (argc < 3)
{
fprintf(stderr, "usage: hexdump [-0] [-s] output.c input.dat\n");
return 1;
}
string = 0;
optind = 1;
if (!strcmp(argv[optind], "-s")) {
++optind;
string = 1;
}
fo = fopen(argv[optind], "wb");
if (!fo)
{
fprintf(stderr, "hexdump: could not open output file '%s'\n", argv[optind]);
return 1;
}
for (i = optind+1; i < argc; i++)
{
fi = fopen(argv[i], "rb");
if (!fi)
{
fclose(fo);
fprintf(stderr, "hexdump: could not open input file '%s'\n", argv[i]);
return 1;
}
basename = strrchr(argv[i], '/');
if (!basename)
basename = strrchr(argv[i], '\\');
if (basename)
basename++;
else
basename = argv[i];
if (strlen(basename) >= sizeof(filename))
{
fclose(fi);
fclose(fo);
fprintf(stderr, "hexdump: filename '%s' too long\n", basename);
return 1;
}
strcpy(filename, argv[i]);
for (p = filename; *p; ++p)
{
if (*p == '/' || *p == '.' || *p == '\\' || *p == '-')
*p = '_';
}
fseek(fi, 0, SEEK_END);
size = ftell(fi);
fseek(fi, 0, SEEK_SET);
fprintf(fo, "const unsigned char _binary_%s_start[%d] =", filename, size);
fprintf(fo, string ? "\n" : " {\n");
hexdump(fo, fi);
fprintf(fo, string ? ";\n" : "};\n");
fprintf(fo, "const unsigned char _binary_%s_end;\n", filename);
fclose(fi);
}
if (fclose(fo))
{
fprintf(stderr, "hexdump: could not close output file '%s'\n", argv[1]);
return 1;
}
return 0;
}
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