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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
hexdump(FILE *fo, FILE *fi)
{
int c, n;
n = 0;
c = fgetc(fi);
while (c != -1)
{
n += fprintf(fo, "%d,", c);
if (n > 72) {
fprintf(fo, "\n");
n = 0;
}
c = fgetc(fi);
}
return n;
}
int
main(int argc, char **argv)
{
FILE *fo;
FILE *fi;
char filename[256];
char *basename;
char *p;
int i, size;
int zero;
if (argc < 3)
{
fprintf(stderr, "usage: hexdump [-0] output.c input.dat\n");
return 1;
}
zero = 0;
if (!strcmp(argv[1], "-0"))
zero = 1;
fo = fopen(argv[zero+1], "wb");
if (!fo)
{
fprintf(stderr, "hexdump: could not open output file '%s'\n", argv[zero+1]);
return 1;
}
if (!zero)
{
fprintf(fo, "#ifndef __STRICT_ANSI__\n");
fprintf(fo, "#if defined(__linux__) || defined(__FreeBSD__) || defined(__OpenBSD__)\n");
fprintf(fo, "#if !defined(__ICC) && !defined(__ANDROID__)\n");
fprintf(fo, "#define HAVE_INCBIN\n");
fprintf(fo, "#endif\n");
fprintf(fo, "#endif\n");
fprintf(fo, "#endif\n");
}
for (i = zero+2; 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);
if (!zero)
{
fprintf(fo, "\n#ifdef HAVE_INCBIN\n");
fprintf(fo, "const int fz_%s_size = %d;\n", filename, size);
fprintf(fo, "extern const char fz_%s[];\n", filename);
fprintf(fo, "asm(\".section .rodata\");\n");
fprintf(fo, "asm(\".global fz_%s\");\n", filename);
fprintf(fo, "asm(\".type fz_%s STT_OBJECT\");\n", filename);
fprintf(fo, "asm(\".size fz_%s, %d\");\n", filename, size);
fprintf(fo, "asm(\".balign 64\");\n");
fprintf(fo, "asm(\"fz_%s:\");\n", filename);
fprintf(fo, "asm(\".incbin \\\"%s\\\"\");\n", argv[i]);
fprintf(fo, "#else\n");
}
fprintf(fo, "const int fz_%s_size = %d;\n", filename, size);
fprintf(fo, "const char fz_%s[] = {\n", filename);
hexdump(fo, fi);
if (!zero)
{
fprintf(fo, "};\n");
fprintf(fo, "#endif\n");
}
else
{
fprintf(fo, "0};\n"); /* zero-terminate so we can hexdump text files into C strings */
}
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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