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