file_cmds/ls/cmp.c

   1 /*
   2  * Copyright (c) 1989, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * Michael Fischbein.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by the University of
  19  *      California, Berkeley and its contributors.
  20  * 4. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  */
  36
  37 #if 0
  38 #ifndef lint
  39 static char sccsid[] = "@(#)cmp.c       8.1 (Berkeley) 5/31/93";
  40 #endif /* not lint */
  41 #endif
  42 #include <sys/cdefs.h>
  43 __RCSID("$FreeBSD: src/bin/ls/cmp.c,v 1.12 2002/06/30 05:13:54 obrien Exp $");
  44
  45
  46 #include <sys/types.h>
  47 #include <sys/stat.h>
  48
  49 #include <fts.h>
  50 #include <string.h>
  51
  52 #include "ls.h"
  53 #include "extern.h"
  54
  55 #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) || \
  56     defined(_XOPEN_SOURCE) || defined(__NetBSD__)
  57 #define ATIMENSEC_CMP(x, op, y) ((x)->st_atimensec op (y)->st_atimensec)
  58 #define CTIMENSEC_CMP(x, op, y) ((x)->st_ctimensec op (y)->st_ctimensec)
  59 #define MTIMENSEC_CMP(x, op, y) ((x)->st_mtimensec op (y)->st_mtimensec)
  60 #define BTIMENSEC_CMP(x, op, y) ((x)->st_birthtimensec op (y)->st_birthtimensec)
  61 #else
  62 #define ATIMENSEC_CMP(x, op, y) \
  63         ((x)->st_atimespec.tv_nsec op (y)->st_atimespec.tv_nsec)
  64 #define CTIMENSEC_CMP(x, op, y) \
  65         ((x)->st_ctimespec.tv_nsec op (y)->st_ctimespec.tv_nsec)
  66 #define MTIMENSEC_CMP(x, op, y) \
  67         ((x)->st_mtimespec.tv_nsec op (y)->st_mtimespec.tv_nsec)
  68 #define BTIMENSEC_CMP(x, op, y) \
  69         ((x)->st_birthtimespec.tv_nsec op (y)->st_birthtimespec.tv_nsec)
  70 #endif
  71
  72 int
  73 namecmp(const FTSENT *a, const FTSENT *b)
  74 {
  75         return (strcoll(a->fts_name, b->fts_name));
  76 }
  77
  78 int
  79 revnamecmp(const FTSENT *a, const FTSENT *b)
  80 {
  81         return (strcoll(b->fts_name, a->fts_name));
  82 }
  83
  84 int
  85 modcmp(const FTSENT *a, const FTSENT *b)
  86 {
  87         if (b->fts_statp->st_mtime > a->fts_statp->st_mtime)
  88                 return (1);
  89         else if (b->fts_statp->st_mtime < a->fts_statp->st_mtime)
  90                 return (-1);
  91         else if (MTIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
  92                 return (1);
  93         else if (MTIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
  94                 return (-1);
  95         else
  96                 return (namecmp(a, b));
  97 }
  98
  99 int
 100 revmodcmp(const FTSENT *a, const FTSENT *b)
 101 {
 102         if (b->fts_statp->st_mtime > a->fts_statp->st_mtime)
 103                 return (-1);
 104         else if (b->fts_statp->st_mtime < a->fts_statp->st_mtime)
 105                 return (1);
 106         else if (MTIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
 107                 return (-1);
 108         else if (MTIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
 109                 return (1);
 110         else
 111                 return (revnamecmp(a, b));
 112 }
 113
 114 int
 115 acccmp(const FTSENT *a, const FTSENT *b)
 116 {
 117         if (b->fts_statp->st_atime > a->fts_statp->st_atime)
 118                 return (1);
 119         else if (b->fts_statp->st_atime < a->fts_statp->st_atime)
 120                 return (-1);
 121         else if (ATIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
 122                 return (1);
 123         else if (ATIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
 124                 return (-1);
 125         else
 126                 return (namecmp(a, b));
 127 }
 128
 129 int
 130 revacccmp(const FTSENT *a, const FTSENT *b)
 131 {
 132         if (b->fts_statp->st_atime > a->fts_statp->st_atime)
 133                 return (-1);
 134         else if (b->fts_statp->st_atime < a->fts_statp->st_atime)
 135                 return (1);
 136         else if (ATIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
 137                 return (-1);
 138         else if (ATIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
 139                 return (1);
 140         else
 141                 return (revnamecmp(a, b));
 142 }
 143
 144 int
 145 statcmp(const FTSENT *a, const FTSENT *b)
 146 {
 147         if (b->fts_statp->st_ctime > a->fts_statp->st_ctime)
 148                 return (1);
 149         else if (b->fts_statp->st_ctime < a->fts_statp->st_ctime)
 150                 return (-1);
 151         else if (CTIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
 152                 return (1);
 153         else if (CTIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
 154                 return (-1);
 155         else
 156                 return (namecmp(a, b));
 157 }
 158
 159 int
 160 revstatcmp(const FTSENT *a, const FTSENT *b)
 161 {
 162         if (b->fts_statp->st_ctime > a->fts_statp->st_ctime)
 163                 return (-1);
 164         else if (b->fts_statp->st_ctime < a->fts_statp->st_ctime)
 165                 return (1);
 166         else if (CTIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
 167                 return (-1);
 168         else if (CTIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
 169                 return (1);
 170         else
 171                 return (revnamecmp(a, b));
 172 }
 173
 174 int
 175 sizecmp(a, b)
 176         const FTSENT *a, *b;
 177 {
 178         if (b->fts_statp->st_size > a->fts_statp->st_size)
 179                 return (1);
 180         if (b->fts_statp->st_size < a->fts_statp->st_size)
 181                 return (-1);
 182         else
 183                 return (namecmp(a, b));
 184 }
 185
 186 int
 187 revsizecmp(a, b)
 188         const FTSENT *a, *b;
 189 {
 190         if (b->fts_statp->st_size > a->fts_statp->st_size)
 191                 return (-1);
 192         if (b->fts_statp->st_size < a->fts_statp->st_size)
 193                 return (1);
 194         else
 195                 return (revnamecmp(a, b));
 196 }
 197
 198 int
 199 birthcmp(const FTSENT *a, const FTSENT *b)
 200 {
 201         if (b->fts_statp->st_birthtime > a->fts_statp->st_birthtime)
 202                 return (1);
 203         else if (b->fts_statp->st_birthtime < a->fts_statp->st_birthtime)
 204                 return (-1);
 205         else if (BTIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
 206                 return (1);
 207         else if (BTIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
 208                 return (-1);
 209         else
 210                 return (namecmp(a, b));
 211 }
 212
 213 int
 214 revbirthcmp(const FTSENT *a, const FTSENT *b)
 215 {
 216         if (b->fts_statp->st_birthtime > a->fts_statp->st_birthtime)
 217                 return (-1);
 218         else if (b->fts_statp->st_birthtime < a->fts_statp->st_birthtime)
 219                 return (1);
 220         else if (BTIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
 221                 return (-1);
 222         else if (BTIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
 223                 return (1);
 224         else
 225                 return (revnamecmp(a, b));
 226 }