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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/* Portions Copyright 2006 Stephen P. Potter */
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* compare two files
*/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <locale.h>
#include <sys/types.h>
FILE *file1, *file2;
char *arg;
int eflg;
int lflg = 1;
offset_t line = 1;
offset_t chr = 0;
offset_t skip1;
offset_t skip2;
offset_t otoi(char *);
static void narg(void);
static void barg(void);
static void earg(void);
int
main(int argc, char **argv)
{
int c;
int c1, c2;
(void) setlocale(LC_ALL, "");
#if !defined(TEXT_DOMAIN) /* Should be defined by cc -D */
#define TEXT_DOMAIN "SYS_TEST" /* Use this only if it weren't */
#endif
(void) textdomain(TEXT_DOMAIN);
while ((c = getopt(argc, argv, "ls")) != EOF)
switch (c) {
case 'l':
lflg = 2;
break;
case 's':
lflg = 0;
break;
case '?':
default:
narg();
}
argv += optind;
argc -= optind;
if (argc < 2 || argc > 4)
narg();
arg = argv[0];
if (arg[0] == '-' && arg[1] == 0)
file1 = stdin;
else if ((file1 = fopen(arg, "r")) == NULL)
barg();
arg = argv[1];
if (arg[0] == '-' && arg[1] == 0)
file2 = stdin;
else if ((file2 = fopen(arg, "r")) == NULL)
barg();
if (file1 == stdin && file2 == stdin)
narg();
if (argc > 2)
skip1 = otoi(argv[2]);
if (argc > 3)
skip2 = otoi(argv[3]);
while (skip1) {
if ((c1 = getc(file1)) == EOF) {
arg = argv[0];
earg();
}
skip1--;
}
while (skip2) {
if ((c2 = getc(file2)) == EOF) {
arg = argv[1];
earg();
}
skip2--;
}
for (;;) {
chr++;
c1 = getc(file1);
c2 = getc(file2);
if (c1 == c2) {
if (c1 == '\n')
line++;
if (c1 == EOF) {
if (eflg)
return (1);
return (0);
}
continue;
}
if (lflg == 0)
return (1);
if (c1 == EOF) {
arg = argv[0];
earg();
}
if (c2 == EOF)
earg();
if (lflg == 1) {
(void) printf(
gettext("%s %s differ: char %lld, line %lld\n"),
argv[0], arg, chr, line);
return (1);
}
eflg = 1;
(void) printf("%6lld %3o %3o\n", chr, c1, c2);
}
}
offset_t
otoi(s)
char *s;
{
offset_t v;
int base;
v = 0;
base = 10;
if (*s == '0')
base = 8;
while (isdigit(*s))
v = v*base + *s++ - '0';
return (v);
}
static void
narg()
{
(void) fprintf(stderr,
gettext("usage: cmp [-l | -s] file1 file2 [skip1] [skip2]\n"));
exit(2);
}
static void
barg()
{
if (lflg)
(void) fprintf(stderr, gettext("cmp: cannot open %s\n"), arg);
exit(2);
}
static void
earg()
{
(void) fprintf(stderr, gettext("cmp: EOF on %s\n"), arg);
exit(1);
}
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