58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include "input.h"
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#include "trans.h"
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int
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main(int argc, char *argv[])
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{
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int c, n, dec, hlp;
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char *prog = *argv;
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unsigned char *b;
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FILE *fp;
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dec = hlp = 0;
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while (--argc > 0 && (*++argv)[0] == '-')
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while ((c = *++argv[0]))
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switch (c) {
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case 'd':
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dec = 1;
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break;
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case 'h':
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hlp = 1;
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break;
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default:
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fprintf(stderr, "%s: illegal option %c\n", prog, c);
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exit(EXIT_FAILURE);
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break;
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}
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if (hlp) {
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fprintf(stdout, "Usage: %s -d -h file\n", prog);
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} else if (argc != 1) {
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if (dec) {
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while ((b = getsxts(stdin, &n))) {
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b = decode(b, &n);
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fwrite(b, sizeof(*b), n, stdout);
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}
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} else {
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while ((b = getocts(stdin, &n)))
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printf("%s", encode(b, n));
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}
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} else {
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if ((fp = fopen(*argv, "r")) == NULL) {
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fprintf(stderr, "%s: can't open %s\n", prog, *argv);
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exit(EXIT_FAILURE);
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}
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else if (dec) {
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while ((b = getsxts(fp, &n))) {
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b = decode(b, &n);
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fwrite(b, sizeof(*b), n, stdout);
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}
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} else {
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while ((b = getocts(fp, &n)))
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printf("%s", encode(b, n));
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}
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fclose(fp);
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}
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exit(EXIT_SUCCESS);
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}
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