mirror of git://git.suckless.org/sbase
82 lines
1.3 KiB
C
82 lines
1.3 KiB
C
/* See LICENSE file for copyright and license details. */
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "util.h"
|
|
|
|
enum { Same = 0, Diff = 1, Error = 2 };
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
enprintf(Error, "usage: %s [-l | -s] file1 file2\n", argv0);
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
FILE *fp[2];
|
|
size_t line = 1, n;
|
|
int lflag = 0, sflag = 0, same = 1, b[2];
|
|
|
|
ARGBEGIN {
|
|
case 'l':
|
|
lflag = 1;
|
|
break;
|
|
case 's':
|
|
sflag = 1;
|
|
break;
|
|
default:
|
|
usage();
|
|
} ARGEND;
|
|
|
|
if (argc != 2 || (lflag && sflag))
|
|
usage();
|
|
|
|
for (n = 0; n < 2; n++) {
|
|
if (argv[n][0] == '-' && !argv[n][1]) {
|
|
argv[n] = "<stdin>";
|
|
fp[n] = stdin;
|
|
} else {
|
|
fp[n] = fopen(argv[n], "r");
|
|
if (!fp[n]) {
|
|
if (!sflag)
|
|
weprintf("fopen %s:", argv[n]);
|
|
exit(Error);
|
|
}
|
|
}
|
|
}
|
|
|
|
for (n = 1; ; n++) {
|
|
b[0] = getc(fp[0]);
|
|
b[1] = getc(fp[1]);
|
|
|
|
if (b[0] == b[1]) {
|
|
if (b[0] == EOF)
|
|
break;
|
|
else if (b[0] == '\n')
|
|
line++;
|
|
continue;
|
|
}
|
|
if (b[0] == EOF || b[1] == EOF) {
|
|
if (!sflag)
|
|
fprintf(stderr, "cmp: EOF on %s\n",
|
|
argv[(b[0] == EOF) ? 0 : 1]);
|
|
exit(Diff);
|
|
}
|
|
if (!lflag) {
|
|
if (!sflag)
|
|
printf("%s %s differ: byte %ld, line %ld\n",
|
|
argv[0], argv[1], n, line);
|
|
exit(Diff);
|
|
} else {
|
|
printf("%ld %o %o\n", n, b[0], b[1]);
|
|
same = 0;
|
|
}
|
|
}
|
|
fclose(fp[0]);
|
|
fclose(fp[1]);
|
|
|
|
return same ? Same : Diff;
|
|
}
|