| 1 | /* $NetBSD: cmp.c,v 1.15 2006/01/19 20:44:57 garbled Exp $ */
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| 2 | /* $NetBSD: misc.c,v 1.11 2007/08/22 16:59:19 christos Exp $ */
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| 3 | /* $NetBSD: regular.c,v 1.20 2006/06/03 21:47:55 christos Exp $ */
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| 4 | /* $NetBSD: special.c,v 1.12 2007/08/21 14:09:54 christos Exp $ */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (c) 1987, 1990, 1993, 1994
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| 8 | * The Regents of the University of California. All rights reserved.
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| 9 | *
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| 10 | * Redistribution and use in source and binary forms, with or without
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| 11 | * modification, are permitted provided that the following conditions
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| 12 | * are met:
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| 13 | * 1. Redistributions of source code must retain the above copyright
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| 14 | * notice, this list of conditions and the following disclaimer.
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| 15 | * 2. Redistributions in binary form must reproduce the above copyright
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| 16 | * notice, this list of conditions and the following disclaimer in the
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| 17 | * documentation and/or other materials provided with the distribution.
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| 18 | * 3. Neither the name of the University nor the names of its contributors
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| 19 | * may be used to endorse or promote products derived from this software
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| 20 | * without specific prior written permission.
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| 21 | *
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| 22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 32 | * SUCH DAMAGE.
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| 33 | */
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| 34 |
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| 35 | /*__COPYRIGHT("@(#) Copyright (c) 1987, 1990, 1993, 1994\n\
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| 36 | The Regents of the University of California. All rights reserved.\n");*/
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| 37 |
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| 38 | #ifdef _MSC_VER
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| 39 | # define MSC_DO_64_BIT_IO
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| 40 | #endif
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| 41 | #include "config.h"
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| 42 | #include <sys/types.h>
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| 43 | #include <sys/stat.h>
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| 44 | #if defined(__FreeBSD__) || defined(__NetBSD__) /** @todo more mmap capable OSes. */
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| 45 | # define CMP_USE_MMAP
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| 46 | # include <sys/param.h>
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| 47 | # include <sys/mman.h>
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| 48 | #endif
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| 49 | #include <errno.h>
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| 50 | #include <fcntl.h>
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| 51 | #include <stdio.h>
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| 52 | #include <stdlib.h>
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| 53 | #include <string.h>
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| 54 | #ifndef _MSC_VER
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| 55 | # include <unistd.h>
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| 56 | # ifndef O_BINARY
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| 57 | # define O_BINARY 0
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| 58 | # endif
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| 59 | #else
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| 60 | # include "mscfakes.h"
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| 61 | #endif
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| 62 | #include "err.h"
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| 63 |
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| 64 | #include "cmp_extern.h"
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| 65 |
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| 66 |
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| 67 | static int
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| 68 | errmsg(PKMKBUILTINCTX pCtx, const char *file, off_t byte, off_t line, int lflag)
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| 69 | {
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| 70 | if (lflag)
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| 71 | #ifdef _MSC_VER
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| 72 | return err(pCtx, ERR_EXIT, "%s: char %I64d, line %lld", file, (__int64)byte, (long long)line);
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| 73 | #else
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| 74 | return err(pCtx, ERR_EXIT, "%s: char %lld, line %lld", file, (long long)byte, (long long)line);
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| 75 | #endif
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| 76 | return err(pCtx, ERR_EXIT, "%s", file);
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| 77 | }
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| 78 |
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| 79 |
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| 80 | static int
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| 81 | eofmsg(PKMKBUILTINCTX pCtx, const char *file, off_t byte, off_t line, int sflag, int lflag)
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| 82 | {
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| 83 | if (!sflag)
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| 84 | {
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| 85 | if (!lflag)
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| 86 | warnx(pCtx, "EOF on %s", file);
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| 87 | else
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| 88 | {
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| 89 | #ifdef _MSC_VER
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| 90 | if (line > 0)
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| 91 | warnx(pCtx, "EOF on %s: char %I64d, line %I64d", file, (__int64)byte, (__int64)line);
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| 92 | else
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| 93 | warnx(pCtx, "EOF on %s: char %I64d", file, (__int64)byte);
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| 94 | #else
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| 95 | if (line > 0)
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| 96 | warnx(pCtx, "EOF on %s: char %lld, line %lld", file, (long long)byte, (long long)line);
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| 97 | else
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| 98 | warnx(pCtx, "EOF on %s: char %lld", file, (long long)byte);
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| 99 | #endif
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| 100 | }
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| 101 | }
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| 102 | return DIFF_EXIT;
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| 103 | }
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| 104 |
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| 105 |
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| 106 | static int
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| 107 | diffmsg(PKMKBUILTINCTX pCtx, const char *file1, const char *file2, off_t byte, off_t line, int sflag)
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| 108 | {
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| 109 | if (!sflag)
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| 110 | #ifdef _MSC_VER
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| 111 | kmk_builtin_ctx_printf(pCtx, 0, "%s %s differ: char %I64d, line %I64d\n",
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| 112 | file1, file2, (__int64)byte, (__int64)line);
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| 113 | #else
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| 114 | kmk_builtin_ctx_printf(pCtx, 0, "%s %s differ: char %lld, line %lld\n",
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| 115 | file1, file2, (long long)byte, (long long)line);
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| 116 | #endif
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| 117 | return DIFF_EXIT;
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| 118 | }
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| 119 |
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| 120 |
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| 121 | /**
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| 122 | * Compares two files, where one or both are non-regular ones.
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| 123 | */
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| 124 | static int
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| 125 | c_special(PKMKBUILTINCTX pCtx, int fd1, const char *file1, off_t skip1,
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| 126 | int fd2, const char *file2, off_t skip2,
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| 127 | int lflag, int sflag)
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| 128 | {
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| 129 | int fd1dup, fd2dup;
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| 130 | FILE *fp1;
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| 131 | int rc;
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| 132 |
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| 133 | /* duplicate because fdopen+fclose will otherwise close the handle. */
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| 134 | fd1dup = dup(fd1);
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| 135 | if (fd1 < 0)
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| 136 | return err(pCtx, ERR_EXIT, "%s", file1);
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| 137 | fp1 = fdopen(fd1dup, "rb");
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| 138 | if (!fp1)
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| 139 | fp1 = fdopen(fd1dup, "r");
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| 140 | if (!fp1)
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| 141 | {
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| 142 | err(pCtx, ERR_EXIT, "%s", file1);
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| 143 | close(fd1dup);
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| 144 | return ERR_EXIT;
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| 145 | }
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| 146 |
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| 147 | fd2dup = dup(fd2);
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| 148 | if (fd2dup >= 0)
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| 149 | {
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| 150 | FILE *fp2 = fdopen(fd2dup, "rb");
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| 151 | if (!fp2)
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| 152 | fp2 = fdopen(fd2dup, "r");
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| 153 | if (fp2)
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| 154 | {
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| 155 | off_t byte;
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| 156 | off_t line;
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| 157 | int ch1 = 0;
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| 158 | int ch2 = 0;
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| 159 |
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| 160 | /* skipping ahead */
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| 161 | rc = OK_EXIT;
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| 162 | for (byte = line = 1; skip1--; byte++)
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| 163 | {
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| 164 | ch1 = getc(fp1);
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| 165 | if (ch1 == EOF)
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| 166 | break;
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| 167 | if (ch1 == '\n')
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| 168 | line++;
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| 169 | }
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| 170 | for (byte = line = 1; skip2--; byte++)
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| 171 | {
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| 172 | ch2 = getc(fp2);
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| 173 | if (ch2 == EOF)
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| 174 | break;
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| 175 | if (ch2 == '\n')
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| 176 | line++;
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| 177 | }
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| 178 | if (ch2 != EOF && ch1 != EOF)
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| 179 | {
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| 180 | /* compare byte by byte */
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| 181 | for (byte = line = 1;; ++byte)
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| 182 | {
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| 183 | ch1 = getc(fp1);
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| 184 | ch2 = getc(fp2);
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| 185 | if (ch1 == EOF || ch2 == EOF)
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| 186 | break;
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| 187 | if (ch1 != ch2)
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| 188 | {
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| 189 | if (!lflag)
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| 190 | {
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| 191 | rc = diffmsg(pCtx, file1, file2, byte, line, sflag);
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| 192 | break;
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| 193 | }
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| 194 | rc = DIFF_EXIT;
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| 195 | #ifdef _MSC_VER
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| 196 | kmk_builtin_ctx_printf(pCtx, 0, "%6i64d %3o %3o\n", (__int64)byte, ch1, ch2);
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| 197 | #else
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| 198 | kmk_builtin_ctx_printf(pCtx, 0, "%6lld %3o %3o\n", (long long)byte, ch1, ch2);
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| 199 | #endif
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| 200 | }
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| 201 | if (ch1 == '\n')
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| 202 | ++line;
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| 203 | }
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| 204 | }
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| 205 |
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| 206 | /* Check for errors and length differences (EOF). */
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| 207 | if (ferror(fp1) && rc != ERR_EXIT)
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| 208 | rc = errmsg(pCtx, file1, byte, line, lflag);
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| 209 | if (ferror(fp2) && rc != ERR_EXIT)
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| 210 | rc = errmsg(pCtx, file2, byte, line, lflag);
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| 211 | if (rc == OK_EXIT)
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| 212 | {
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| 213 | if (feof(fp1))
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| 214 | {
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| 215 | if (!feof(fp2))
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| 216 | rc = eofmsg(pCtx, file1, byte, line, sflag, lflag);
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| 217 | }
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| 218 | else if (feof(fp2))
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| 219 | rc = eofmsg(pCtx, file2, byte, line, sflag, lflag);
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| 220 | }
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| 221 |
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| 222 | fclose(fp2);
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| 223 | }
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| 224 | else
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| 225 | {
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| 226 | rc = err(pCtx, ERR_EXIT, "%s", file2);
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| 227 | close(fd2dup);
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| 228 | }
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| 229 | }
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| 230 | else
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| 231 | rc = err(pCtx, ERR_EXIT, "%s", file2);
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| 232 |
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| 233 | fclose(fp1);
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| 234 | return rc;
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| 235 | }
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| 236 |
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| 237 |
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| 238 | #ifdef CMP_USE_MMAP
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| 239 | /**
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| 240 | * Compare two files using mmap.
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| 241 | */
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| 242 | static int
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| 243 | c_regular(PKMKBUILTINCTX pCtx, int fd1, const char *file1, off_t skip1, off_t len1,
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| 244 | int fd2, const char *file2, off_t skip2, off_t len2, int sflag, int lflag)
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| 245 | {
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| 246 | unsigned char ch, *p1, *p2, *b1, *b2;
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| 247 | off_t byte, length, line;
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| 248 | int dfound;
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| 249 | size_t blk_sz, blk_cnt;
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| 250 |
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| 251 | if (sflag && len1 != len2)
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| 252 | return DIFF_EXIT;
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| 253 |
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| 254 | if (skip1 > len1)
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| 255 | return eofmsg(pCtx, file1, len1 + 1, 0, sflag, lflag);
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| 256 | len1 -= skip1;
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| 257 | if (skip2 > len2)
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| 258 | return eofmsg(pCtx, file2, len2 + 1, 0, sflag, lflag);
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| 259 | len2 -= skip2;
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| 260 |
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| 261 | byte = line = 1;
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| 262 | dfound = 0;
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| 263 | length = len1 <= len2 ? len1 : len2;
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| 264 | for (blk_sz = 1024 * 1024; length != 0; length -= blk_sz)
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| 265 | {
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| 266 | if (blk_sz > length)
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| 267 | blk_sz = length;
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| 268 | b1 = p1 = mmap(NULL, blk_sz, PROT_READ, MAP_FILE | MAP_SHARED, fd1, skip1);
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| 269 | if (p1 == MAP_FAILED)
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| 270 | goto l_mmap_failed;
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| 271 |
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| 272 | b2 = p2 = mmap(NULL, blk_sz, PROT_READ, MAP_FILE | MAP_SHARED, fd2, skip2);
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| 273 | if (p2 == MAP_FAILED)
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| 274 | {
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| 275 | munmap(p1, blk_sz);
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| 276 | goto l_mmap_failed;
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| 277 | }
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| 278 |
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| 279 | blk_cnt = blk_sz;
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| 280 | for (; blk_cnt--; ++p1, ++p2, ++byte)
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| 281 | {
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| 282 | if ((ch = *p1) != *p2)
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| 283 | {
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| 284 | if (!lflag)
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| 285 | {
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| 286 | munmap(b1, blk_sz);
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| 287 | munmap(b2, blk_sz);
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| 288 | return diffmsg(pCtx, file1, file2, byte, line, sflag);
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| 289 | }
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| 290 | dfound = 1;
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| 291 | #ifdef _MSC_VER
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| 292 | kmk_builtin_ctx_printf(pCtx, 0, "%6I64d %3o %3o\n", (__int64)byte, ch, *p2);
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| 293 | #else
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| 294 | kmk_builtin_ctx_printf(pCtx, 0, "%6lld %3o %3o\n", (long long)byte, ch, *p2);
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| 295 | #endif
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| 296 | }
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| 297 | if (ch == '\n')
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| 298 | ++line;
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| 299 | }
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| 300 | munmap(p1 - blk_sz, blk_sz);
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| 301 | munmap(p2 - blk_sz, blk_sz);
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| 302 | skip1 += blk_sz;
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| 303 | skip2 += blk_sz;
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| 304 | }
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| 305 |
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| 306 | if (len1 != len2)
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| 307 | return eofmsg(pCtx, len1 > len2 ? file2 : file1, byte, line, sflag, lflag);
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| 308 | if (dfound)
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| 309 | return DIFF_EXIT;
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| 310 | return OK_EXIT;
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| 311 |
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| 312 | l_mmap_failed:
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| 313 | return c_special(pCtx, fd1, file1, skip1, fd2, file2, skip2, lflag, sflag);
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| 314 | }
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| 315 |
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| 316 | #else /* non-mmap c_regular: */
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| 317 |
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| 318 | /**
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| 319 | * Compare two files without mmaping them.
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| 320 | */
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| 321 | static int
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| 322 | c_regular(PKMKBUILTINCTX pCtx, int fd1, const char *file1, off_t skip1, off_t len1,
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| 323 | int fd2, const char *file2, off_t skip2, off_t len2, int sflag, int lflag)
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| 324 | {
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| 325 | unsigned char ch, *p1, *p2, *b1 = 0, *b2 = 0;
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| 326 | off_t byte, length, line, bytes_read;
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| 327 | int dfound;
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| 328 | size_t blk_sz, blk_cnt;
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| 329 |
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| 330 | if (sflag && len1 != len2)
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| 331 | return DIFF_EXIT;
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| 332 |
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| 333 | if (skip1 > len1)
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| 334 | return eofmsg(pCtx, file1, len1 + 1, 0, sflag, lflag);
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| 335 | len1 -= skip1;
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| 336 | if (skip2 > len2)
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| 337 | return eofmsg(pCtx, file2, len2 + 1, 0, sflag, lflag);
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| 338 | len2 -= skip2;
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| 339 |
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| 340 | if (skip1 && lseek(fd1, skip1, SEEK_SET) < 0)
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| 341 | goto l_special;
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| 342 | if (skip2 && lseek(fd2, skip2, SEEK_SET) < 0)
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| 343 | {
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| 344 | if (skip1 && lseek(fd1, 0, SEEK_SET) < 0)
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| 345 | return err(pCtx, 1, "seek failed");
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| 346 | goto l_special;
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| 347 | }
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| 348 |
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| 349 | #define CMP_BUF_SIZE (128*1024)
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| 350 |
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| 351 | b1 = malloc(CMP_BUF_SIZE);
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| 352 | b2 = malloc(CMP_BUF_SIZE);
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| 353 | if (!b1 || !b2)
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| 354 | goto l_malloc_failed;
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| 355 |
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| 356 | byte = line = 1;
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| 357 | dfound = 0;
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| 358 | length = len1;
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| 359 | if (length > len2)
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| 360 | length = len2;
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| 361 | for (blk_sz = CMP_BUF_SIZE; length != 0; length -= blk_sz)
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| 362 | {
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| 363 | if ((off_t)blk_sz > length)
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| 364 | blk_sz = (size_t)length;
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| 365 |
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| 366 | bytes_read = read(fd1, b1, blk_sz);
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| 367 | if (bytes_read != (off_t)blk_sz)
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| 368 | goto l_read_error;
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| 369 |
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| 370 | bytes_read = read(fd2, b2, blk_sz);
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| 371 | if (bytes_read != (off_t)blk_sz)
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| 372 | goto l_read_error;
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| 373 |
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| 374 | blk_cnt = blk_sz;
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| 375 | p1 = b1;
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| 376 | p2 = b2;
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| 377 | for (; blk_cnt--; ++p1, ++p2, ++byte)
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| 378 | {
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| 379 | if ((ch = *p1) != *p2)
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| 380 | {
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| 381 | if (!lflag)
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| 382 | {
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| 383 | free(b1);
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| 384 | free(b2);
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| 385 | return diffmsg(pCtx, file1, file2, byte, line, sflag);
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| 386 | }
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| 387 | dfound = 1;
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| 388 | #ifdef _MSC_VER
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| 389 | kmk_builtin_ctx_printf(pCtx, 0, "%6I64d %3o %3o\n", (__int64)byte, ch, *p2);
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| 390 | #else
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| 391 | kmk_builtin_ctx_printf(pCtx, 0, "%6lld %3o %3o\n", (long long)byte, ch, *p2);
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| 392 | #endif
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| 393 | }
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| 394 | if (ch == '\n')
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| 395 | ++line;
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|---|
| 396 | }
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| 397 | skip1 += blk_sz;
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| 398 | skip2 += blk_sz;
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| 399 | }
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| 400 |
|
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| 401 | if (len1 != len2)
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| 402 | return eofmsg(pCtx, len1 > len2 ? file2 : file1, byte, line, sflag, lflag);
|
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| 403 | if (dfound)
|
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| 404 | return DIFF_EXIT;
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| 405 | return OK_EXIT;
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| 406 |
|
|---|
| 407 | l_read_error:
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| 408 | if ( lseek(fd1, 0, SEEK_SET) < 0
|
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| 409 | || lseek(fd2, 0, SEEK_SET) < 0)
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|---|
| 410 | {
|
|---|
| 411 | err(pCtx, 1, "seek failed");
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|---|
| 412 | free(b1);
|
|---|
| 413 | free(b2);
|
|---|
| 414 | return 1;
|
|---|
| 415 | }
|
|---|
| 416 | l_malloc_failed:
|
|---|
| 417 | free(b1);
|
|---|
| 418 | free(b2);
|
|---|
| 419 | l_special:
|
|---|
| 420 | return c_special(pCtx, fd1, file1, skip1, fd2, file2, skip2, lflag, sflag);
|
|---|
| 421 | }
|
|---|
| 422 | #endif /* non-mmap c_regular */
|
|---|
| 423 |
|
|---|
| 424 |
|
|---|
| 425 | /**
|
|---|
| 426 | * Compares two open files.
|
|---|
| 427 | */
|
|---|
| 428 | int
|
|---|
| 429 | cmp_fd_and_fd_ex(PKMKBUILTINCTX pCtx, int fd1, const char *file1, off_t skip1,
|
|---|
| 430 | int fd2, const char *file2, off_t skip2,
|
|---|
| 431 | int sflag, int lflag, int special)
|
|---|
| 432 | {
|
|---|
| 433 | struct stat st1, st2;
|
|---|
| 434 | int rc;
|
|---|
| 435 |
|
|---|
| 436 | if (fstat(fd1, &st1))
|
|---|
| 437 | return err(pCtx, ERR_EXIT, "%s", file1);
|
|---|
| 438 | if (fstat(fd2, &st2))
|
|---|
| 439 | return err(pCtx, ERR_EXIT, "%s", file2);
|
|---|
| 440 |
|
|---|
| 441 | if ( !S_ISREG(st1.st_mode)
|
|---|
| 442 | || !S_ISREG(st2.st_mode)
|
|---|
| 443 | || special)
|
|---|
| 444 | rc = c_special(pCtx, fd1, file1, skip1,
|
|---|
| 445 | fd2, file2, skip2, sflag, lflag);
|
|---|
| 446 | else
|
|---|
| 447 | rc = c_regular(pCtx, fd1, file1, skip1, st1.st_size,
|
|---|
| 448 | fd2, file2, skip2, st2.st_size, sflag, lflag);
|
|---|
| 449 | return rc;
|
|---|
| 450 | }
|
|---|
| 451 |
|
|---|
| 452 |
|
|---|
| 453 | /**
|
|---|
| 454 | * Compares two open files.
|
|---|
| 455 | */
|
|---|
| 456 | int
|
|---|
| 457 | cmp_fd_and_fd(PKMKBUILTINCTX pCtx, int fd1, const char *file1,
|
|---|
| 458 | int fd2, const char *file2,
|
|---|
| 459 | int sflag, int lflag, int special)
|
|---|
| 460 | {
|
|---|
| 461 | return cmp_fd_and_fd_ex(pCtx, fd1, file1, 0, fd2, file2, 0, sflag, lflag, special);
|
|---|
| 462 | }
|
|---|
| 463 |
|
|---|
| 464 |
|
|---|
| 465 | /**
|
|---|
| 466 | * Compares an open file with another that isn't open yet.
|
|---|
| 467 | */
|
|---|
| 468 | int
|
|---|
| 469 | cmp_fd_and_file_ex(PKMKBUILTINCTX pCtx, int fd1, const char *file1, off_t skip1,
|
|---|
| 470 | const char *file2, off_t skip2,
|
|---|
| 471 | int sflag, int lflag, int special)
|
|---|
| 472 | {
|
|---|
| 473 | int rc;
|
|---|
| 474 | int fd2;
|
|---|
| 475 |
|
|---|
| 476 | if (!strcmp(file2, "-"))
|
|---|
| 477 | {
|
|---|
| 478 | fd2 = 0 /* stdin */;
|
|---|
| 479 | special = 1;
|
|---|
| 480 | file2 = "stdin";
|
|---|
| 481 | }
|
|---|
| 482 | else
|
|---|
| 483 | fd2 = open(file2, O_RDONLY | O_BINARY | KMK_OPEN_NO_INHERIT, 0);
|
|---|
| 484 | if (fd2 >= 0)
|
|---|
| 485 | {
|
|---|
| 486 | rc = cmp_fd_and_fd_ex(pCtx, fd1, file1, skip1,
|
|---|
| 487 | fd2, file2, skip2, sflag, lflag, special);
|
|---|
| 488 | close(fd2);
|
|---|
| 489 | }
|
|---|
| 490 | else
|
|---|
| 491 | {
|
|---|
| 492 | if (!sflag)
|
|---|
| 493 | warn(pCtx, "%s", file2);
|
|---|
| 494 | rc = ERR_EXIT;
|
|---|
| 495 | }
|
|---|
| 496 | return rc;
|
|---|
| 497 | }
|
|---|
| 498 |
|
|---|
| 499 |
|
|---|
| 500 | /**
|
|---|
| 501 | * Compares an open file with another that isn't open yet.
|
|---|
| 502 | */
|
|---|
| 503 | int
|
|---|
| 504 | cmp_fd_and_file(PKMKBUILTINCTX pCtx, int fd1, const char *file1,
|
|---|
| 505 | const char *file2,
|
|---|
| 506 | int sflag, int lflag, int special)
|
|---|
| 507 | {
|
|---|
| 508 | return cmp_fd_and_file_ex(pCtx, fd1, file1, 0,
|
|---|
| 509 | file2, 0, sflag, lflag, special);
|
|---|
| 510 | }
|
|---|
| 511 |
|
|---|
| 512 |
|
|---|
| 513 | /**
|
|---|
| 514 | * Opens and compare two files.
|
|---|
| 515 | */
|
|---|
| 516 | int
|
|---|
| 517 | cmp_file_and_file_ex(PKMKBUILTINCTX pCtx, const char *file1, off_t skip1,
|
|---|
| 518 | const char *file2, off_t skip2,
|
|---|
| 519 | int sflag, int lflag, int special)
|
|---|
| 520 | {
|
|---|
| 521 | int fd1;
|
|---|
| 522 | int rc;
|
|---|
| 523 |
|
|---|
| 524 | if (lflag && sflag)
|
|---|
| 525 | return errx(pCtx, ERR_EXIT, "only one of -l and -s may be specified");
|
|---|
| 526 |
|
|---|
| 527 | if (!strcmp(file1, "-"))
|
|---|
| 528 | {
|
|---|
| 529 | if (!strcmp(file2, "-"))
|
|---|
| 530 | return errx(pCtx, ERR_EXIT, "standard input may only be specified once");
|
|---|
| 531 | file1 = "stdin";
|
|---|
| 532 | fd1 = 1;
|
|---|
| 533 | special = 1;
|
|---|
| 534 | }
|
|---|
| 535 | else
|
|---|
| 536 | fd1 = open(file1, O_RDONLY | O_BINARY | KMK_OPEN_NO_INHERIT, 0);
|
|---|
| 537 | if (fd1 >= 0)
|
|---|
| 538 | {
|
|---|
| 539 | rc = cmp_fd_and_file_ex(pCtx, fd1, file1, skip1,
|
|---|
| 540 | file2, skip2, sflag, lflag, special);
|
|---|
| 541 | close(fd1);
|
|---|
| 542 | }
|
|---|
| 543 | else
|
|---|
| 544 | {
|
|---|
| 545 | if (!sflag)
|
|---|
| 546 | warn(pCtx, "%s", file1);
|
|---|
| 547 | rc = ERR_EXIT;
|
|---|
| 548 | }
|
|---|
| 549 |
|
|---|
| 550 | return rc;
|
|---|
| 551 | }
|
|---|
| 552 |
|
|---|
| 553 |
|
|---|
| 554 | /**
|
|---|
| 555 | * Opens and compare two files.
|
|---|
| 556 | */
|
|---|
| 557 | int
|
|---|
| 558 | cmp_file_and_file(PKMKBUILTINCTX pCtx, const char *file1, const char *file2, int sflag, int lflag, int special)
|
|---|
| 559 | {
|
|---|
| 560 | return cmp_file_and_file_ex(pCtx, file1, 0, file2, 0, sflag, lflag, special);
|
|---|
| 561 | }
|
|---|
| 562 |
|
|---|
