66 lines
1.9 KiB
C
66 lines
1.9 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include "input.h"
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#include "encode.h"
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#define OBUFSIZE 4
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#define SBUFSIZE 5
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unsigned char obuf[OBUFSIZE];
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unsigned char sbuf[SBUFSIZE];
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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, url, hlp;
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char *prog = *argv;
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FILE *in, *out;
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dec = url = 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 'u':
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url = 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 infile outfile\n", prog);
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} else {
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if (argc >= 1 && (in = 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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if (argc == 2 && (out = fopen(*(argv+1), "w")) == NULL) {
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fprintf(stderr, "%s: can't open %s\n", prog, *(argv+1));
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exit(EXIT_FAILURE);
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}
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if (dec) {
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while ((n = getsxts((argc >= 1) ? in : stdin, sbuf, SBUFSIZE))) {
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n = decode(sbuf, n, obuf, url);
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fwrite(obuf, sizeof(*obuf), n, (argc == 2) ? out : stdout);
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}
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} else {
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while ((n = getocts((argc >= 1) ? in : stdin, obuf, OBUFSIZE))) {
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encode(obuf, n, sbuf, url);
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fprintf((argc == 2) ? out : stdout, "%s", sbuf);
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}
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fprintf((argc == 2) ? out : stdout, "\n");
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}
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if (in)
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fclose(in);
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if (out)
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fclose(out);
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}
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exit(EXIT_SUCCESS);
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}
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