mirror of
https://github.com/topjohnwu/ndk-busybox.git
synced 2024-12-02 00:36:20 +00:00
81 lines
1.9 KiB
C
81 lines
1.9 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* Mini cmp implementation for busybox
|
|
*
|
|
*
|
|
* Copyright (C) 1999,2000,2001 by Lineo, inc.
|
|
* Written by Matt Kraai <kraai@alumni.carnegiemellon.edu>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
#include <getopt.h>
|
|
#include "busybox.h"
|
|
|
|
int cmp_main(int argc, char **argv)
|
|
{
|
|
FILE *fp1 = NULL, *fp2 = stdin;
|
|
char *filename1, *filename2 = "-";
|
|
int c, c1, c2, char_pos = 1, line_pos = 1, silent = FALSE;
|
|
|
|
while ((c = getopt(argc, argv, "s")) != EOF) {
|
|
switch (c) {
|
|
case 's':
|
|
silent = TRUE;
|
|
break;
|
|
default:
|
|
show_usage();
|
|
}
|
|
}
|
|
|
|
filename1 = argv[optind];
|
|
switch (argc - optind) {
|
|
case 2:
|
|
fp2 = xfopen(filename2 = argv[optind + 1], "r");
|
|
case 1:
|
|
fp1 = xfopen(filename1, "r");
|
|
break;
|
|
default:
|
|
show_usage();
|
|
}
|
|
|
|
do {
|
|
c1 = fgetc(fp1);
|
|
c2 = fgetc(fp2);
|
|
if (c1 != c2) {
|
|
if (silent)
|
|
return EXIT_FAILURE;
|
|
if (c1 == EOF)
|
|
printf("EOF on %s\n", filename1);
|
|
else if (c2 == EOF)
|
|
printf("EOF on %s\n", filename2);
|
|
else
|
|
printf("%s %s differ: char %d, line %d\n", filename1, filename2,
|
|
char_pos, line_pos);
|
|
return EXIT_FAILURE;
|
|
}
|
|
char_pos++;
|
|
if (c1 == '\n')
|
|
line_pos++;
|
|
} while (c1 != EOF);
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|