66 lines
1.1 KiB
C
66 lines
1.1 KiB
C
/* See LICENSE file for copyright and license details. */
|
|
#include <stdbool.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include "util.h"
|
|
|
|
enum { Same = 0, Diff = 1, Error = 2 };
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
enprintf(Error, "usage: %s [-ls] file1 file2\n", argv0);
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
bool lflag = false;
|
|
bool sflag = false;
|
|
bool same = true;
|
|
int b[2], i;
|
|
long line = 1, n = 1;
|
|
FILE *fp[2];
|
|
|
|
ARGBEGIN {
|
|
case 'l':
|
|
lflag = true;
|
|
break;
|
|
case 's':
|
|
sflag = true;
|
|
break;
|
|
default:
|
|
usage();
|
|
} ARGEND;
|
|
|
|
if(argc < 2)
|
|
usage();
|
|
|
|
for(i = 0; i < 2; i++) {
|
|
if(!(fp[i] = fopen(argv[i], "r")))
|
|
enprintf(Error, "fopen %s:", argv[i]);
|
|
}
|
|
for(n = 1; ((b[0] = getc(fp[0])) != EOF) \
|
|
| ((b[1] = getc(fp[1])) != EOF); n++) {
|
|
if(b[0] == '\n')
|
|
line++;
|
|
if(b[0] == b[1])
|
|
continue;
|
|
for(i = 0; i < 2; i++)
|
|
if(b[i] == EOF)
|
|
enprintf(Diff, "cmp: EOF on %s\n", argv[i]);
|
|
if(!lflag) {
|
|
if(!sflag)
|
|
printf("%s %s differ: char %ld, line %ld\n",
|
|
argv[0], argv[1], n, line);
|
|
exit(Diff);
|
|
} else {
|
|
printf("%4ld %3o %3o\n", n, b[0], b[1]);
|
|
same = false;
|
|
}
|
|
}
|
|
return same ? Same : Diff;
|
|
}
|
|
|