| 1 | /* $NetBSD: cmp.c,v 1.15 2006/01/19 20:44:57 garbled Exp $ */
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| 2 |
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| 3 | /*
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| 4 | * Copyright (c) 1987, 1990, 1993, 1994
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| 5 | * The Regents of the University of California. All rights reserved.
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| 6 | *
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| 7 | * Redistribution and use in source and binary forms, with or without
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| 8 | * modification, are permitted provided that the following conditions
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| 9 | * are met:
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| 10 | * 1. Redistributions of source code must retain the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer.
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| 12 | * 2. Redistributions in binary form must reproduce the above copyright
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| 13 | * notice, this list of conditions and the following disclaimer in the
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| 14 | * documentation and/or other materials provided with the distribution.
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| 15 | * 3. Neither the name of the University nor the names of its contributors
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| 16 | * may be used to endorse or promote products derived from this software
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| 17 | * without specific prior written permission.
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| 18 | *
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| 19 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 29 | * SUCH DAMAGE.
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| 30 | */
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| 31 |
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| 32 | /*__COPYRIGHT("@(#) Copyright (c) 1987, 1990, 1993, 1994\n\
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| 33 | The Regents of the University of California. All rights reserved.\n");
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| 34 | static char sccsid[] = "@(#)cmp.c 8.3 (Berkeley) 4/2/94";
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| 35 | __RCSID("$NetBSD: cmp.c,v 1.15 2006/01/19 20:44:57 garbled Exp $"); */
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| 36 |
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| 37 | #ifdef _MSC_VER
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| 38 | # define MSC_DO_64_BIT_IO /* for correct off_t */
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| 39 | #endif
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| 40 | #include "config.h"
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| 41 | #include <sys/types.h>
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| 42 | #include "err.h"
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| 43 | #include <errno.h>
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| 44 | #include <stdio.h>
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| 45 | #include <stdlib.h>
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| 46 | #include <string.h>
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| 47 | #include <locale.h>
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| 48 | #ifndef _MSC_VER
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| 49 | # include <unistd.h>
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| 50 | #else
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| 51 | # include "mscfakes.h"
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| 52 | #endif
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| 53 | #include "getopt.h"
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| 54 | #include "kmkbuiltin.h"
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| 55 | #include "cmp_extern.h"
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| 56 |
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| 57 |
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| 58 | static const struct option long_options[] =
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| 59 | {
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| 60 | { "help", no_argument, 0, 261 },
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| 61 | { "version", no_argument, 0, 262 },
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| 62 | { 0, 0, 0, 0 },
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| 63 | };
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| 64 |
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| 65 |
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| 66 | static int usage(FILE *);
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| 67 |
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| 68 | int
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| 69 | kmk_builtin_cmp(int argc, char *argv[], char **envp)
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| 70 | {
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| 71 | off_t skip1 = 0, skip2 = 0;
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| 72 | int lflag = 0, sflag = 0;
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| 73 | int ch;
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| 74 | char *file1, *file2;
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| 75 |
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| 76 | #ifdef kmk_builtin_cmp
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| 77 | setlocale(LC_ALL, "");
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| 78 | #endif
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| 79 |
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| 80 | /* reset getopt and set progname. */
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| 81 | g_progname = argv[0];
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| 82 | opterr = 1;
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| 83 | optarg = NULL;
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| 84 | optopt = 0;
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| 85 | optind = 0; /* init */
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| 86 |
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| 87 | while ((ch = getopt_long(argc, argv, "ls", long_options, NULL)) != -1)
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| 88 | {
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| 89 | switch (ch)
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| 90 | {
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| 91 | case 'l': /* print all differences */
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| 92 | lflag = 1;
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| 93 | break;
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| 94 | case 's': /* silent run */
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| 95 | sflag = 1;
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| 96 | break;
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| 97 | case 261:
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| 98 | usage(stdout);
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| 99 | return 0;
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| 100 | case 262:
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| 101 | return kbuild_version(argv[0]);
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| 102 | case '?':
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| 103 | default:
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| 104 | return usage(stderr);
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| 105 | }
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| 106 | }
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| 107 | argv += optind;
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| 108 | argc -= optind;
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| 109 |
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| 110 | if (argc < 2 || argc > 4)
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| 111 | return usage(stderr);
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| 112 |
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| 113 | file1 = argv[0];
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| 114 | file2 = argv[1];
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| 115 |
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| 116 | if (argc > 2)
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| 117 | {
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| 118 | char *ep;
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| 119 |
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| 120 | errno = 0;
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| 121 | skip1 = strtoll(argv[2], &ep, 0);
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| 122 | if (errno || ep == argv[2])
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| 123 | return errx(ERR_EXIT, "strtoll(%s,,) failed", argv[2]);
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| 124 |
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| 125 | if (argc == 4)
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| 126 | {
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| 127 | skip2 = strtoll(argv[3], &ep, 0);
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| 128 | if (errno || ep == argv[3])
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| 129 | return errx(ERR_EXIT, "strtoll(%s,,) failed", argv[3]);
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| 130 | }
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| 131 | }
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| 132 |
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| 133 | return cmp_file_and_file_ex(file1, skip1, file2, skip2, sflag, lflag, 0);
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| 134 | }
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| 135 |
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| 136 | static int
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| 137 | usage(FILE *fp)
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| 138 | {
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| 139 | fprintf(fp, "usage: %s [-l | -s] file1 file2 [skip1 [skip2]]\n"
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| 140 | " or: %s --help\n"
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| 141 | " or: %s --version\n",
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| 142 | g_progname, g_progname, g_progname);
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| 143 | return ERR_EXIT;
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| 144 | }
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