136 lines
2.9 KiB
C
136 lines
2.9 KiB
C
/*
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* xxd utility
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*
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* Copyright 2020 Lars Wirzenius
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* Copyright 2020 Vincent Sanders <vince@netsurf-browser.org>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* * The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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static char *get_array_name(const char *fname)
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{
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int fnamelen;
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char *aryname;
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int idx;
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fnamelen = strlen(fname);
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aryname = malloc(fnamelen + 1);
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if (aryname != NULL) {
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for (idx = 0; idx < fnamelen; idx++) {
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int c = fname[idx];
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if ((c >= '0' && c <= '9') ||
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(c >= 'A' && c <= 'Z') ||
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(c >= 'a' && c <= 'z')) {
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aryname[idx] = fname[idx];
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} else {
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aryname[idx] = '_';
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}
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}
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aryname[idx] = 0;
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}
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return aryname;
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}
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int main(int argc, char **argv)
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{
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int inc = 0;
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int opt;
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int c, n;
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FILE *inf;
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FILE *outf;
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char *aryname = NULL;
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int outlen;
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while ((opt = getopt(argc, argv, "i")) != -1) {
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switch (opt) {
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case 'i':
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inc = 1;
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break;
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default: /* '?' */
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fprintf(stderr, "Usage: %s [-i] [infile [outfile]]]\n",
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argv[0]);
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exit(EXIT_FAILURE);
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}
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}
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if (optind < argc) {
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inf = fopen(argv[optind], "r");
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if (inf == NULL) {
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perror("Opening for read");
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exit(EXIT_FAILURE);
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}
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aryname = get_array_name(argv[optind]);
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optind++;
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} else {
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inf = stdin;
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}
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if (optind < argc) {
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outf = fopen(argv[optind], "w");
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if (outf == NULL) {
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perror("Opening for write");
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exit(EXIT_FAILURE);
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}
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} else {
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outf = stdout;
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}
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if ((inc != 0) && (aryname != NULL)) {
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fprintf(outf, "unsigned char %s[] = {\n", aryname);
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}
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outlen = 0;
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n = 0;
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while ((c = getc(inf)) != EOF) {
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if (n == 0) {
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fprintf(outf, " ");
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}
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fprintf(outf, " 0x%02x,", c);
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n += 1;
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outlen++;
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if (n >= 12) {
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fprintf(outf, "\n");
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n = 0;
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}
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}
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if (n > 0) {
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fprintf(outf, "\n");
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}
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if ((inc != 0) && (aryname != NULL)) {
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fprintf(outf, "};\nunsigned int %s_len = %d;\n",
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aryname, outlen);
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}
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fclose(outf);
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fclose(inf);
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return 0;
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}
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