ls/cmp.c

   1 /*      $NetBSD: cmp.c,v 1.14 1998/10/09 02:00:39 enami Exp $   */
   2
   3 /*
   4  * Copyright (c) 1989, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Michael Fischbein.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *      This product includes software developed by the University of
  21  *      California, Berkeley and its contributors.
  22  * 4. Neither the name of the University nor the names of its contributors
  23  *    may be used to endorse or promote products derived from this software
  24  *    without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36  * SUCH DAMAGE.
  37  */
  38
  39 #include <sys/cdefs.h>
  40 #ifndef lint
  41 #if 0
  42 static char sccsid[] = "@(#)cmp.c       8.1 (Berkeley) 5/31/93";
  43 #else
  44 __RCSID("$NetBSD: cmp.c,v 1.14 1998/10/09 02:00:39 enami Exp $");
  45 #endif
  46 #endif /* not lint */
  47
  48 #include <sys/types.h>
  49 #include <sys/stat.h>
  50
  51 #include <fts.h>
  52 #include <string.h>
  53
  54 #include "ls.h"
  55 #include "extern.h"
  56
  57 #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) || \
  58     defined(_XOPEN_SOURCE) || defined(__NetBSD__)
  59 #define ATIMENSEC_CMP(x, op, y) ((x)->st_atimensec op (y)->st_atimensec)
  60 #define CTIMENSEC_CMP(x, op, y) ((x)->st_ctimensec op (y)->st_ctimensec)
  61 #define MTIMENSEC_CMP(x, op, y) ((x)->st_mtimensec op (y)->st_mtimensec)
  62 #else
  63 #define ATIMENSEC_CMP(x, op, y) \
  64         ((x)->st_atimespec.tv_nsec op (y)->st_atimespec.tv_nsec)
  65 #define CTIMENSEC_CMP(x, op, y) \
  66         ((x)->st_ctimespec.tv_nsec op (y)->st_ctimespec.tv_nsec)
  67 #define MTIMENSEC_CMP(x, op, y) \
  68         ((x)->st_mtimespec.tv_nsec op (y)->st_mtimespec.tv_nsec)
  69 #endif
  70
  71 int
  72 namecmp(a, b)
  73         const FTSENT *a, *b;
  74 {
  75         return (strcmp(a->fts_name, b->fts_name));
  76 }
  77
  78 int
  79 revnamecmp(a, b)
  80         const FTSENT *a, *b;
  81 {
  82         return (strcmp(b->fts_name, a->fts_name));
  83 }
  84
  85 int
  86 modcmp(a, b)
  87         const FTSENT *a, *b;
  88 {
  89         if (b->fts_statp->st_mtime > a->fts_statp->st_mtime)
  90                 return (1);
  91         else if (b->fts_statp->st_mtime < a->fts_statp->st_mtime)
  92                 return (-1);
  93         else if (MTIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
  94                 return (1);
  95         else if (MTIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
  96                 return (-1);
  97         else
  98                 return (namecmp(a, b));
  99 }
 100
 101 int
 102 revmodcmp(a, b)
 103         const FTSENT *a, *b;
 104 {
 105         if (b->fts_statp->st_mtime > a->fts_statp->st_mtime)
 106                 return (-1);
 107         else if (b->fts_statp->st_mtime < a->fts_statp->st_mtime)
 108                 return (1);
 109         else if (MTIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
 110                 return (-1);
 111         else if (MTIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
 112                 return (1);
 113         else
 114                 return (revnamecmp(a, b));
 115 }
 116
 117 int
 118 acccmp(a, b)
 119         const FTSENT *a, *b;
 120 {
 121         if (b->fts_statp->st_atime > a->fts_statp->st_atime)
 122                 return (1);
 123         else if (b->fts_statp->st_atime < a->fts_statp->st_atime)
 124                 return (-1);
 125         else if (ATIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
 126                 return (1);
 127         else if (ATIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
 128                 return (-1);
 129         else
 130                 return (namecmp(a, b));
 131 }
 132
 133 int
 134 revacccmp(a, b)
 135         const FTSENT *a, *b;
 136 {
 137         if (b->fts_statp->st_atime > a->fts_statp->st_atime)
 138                 return (-1);
 139         else if (b->fts_statp->st_atime < a->fts_statp->st_atime)
 140                 return (1);
 141         else if (ATIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
 142                 return (-1);
 143         else if (ATIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
 144                 return (1);
 145         else
 146                 return (revnamecmp(a, b));
 147 }
 148
 149 int
 150 statcmp(a, b)
 151         const FTSENT *a, *b;
 152 {
 153         if (b->fts_statp->st_ctime > a->fts_statp->st_ctime)
 154                 return (1);
 155         else if (b->fts_statp->st_ctime < a->fts_statp->st_ctime)
 156                 return (-1);
 157         else if (CTIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
 158                 return (1);
 159         else if (CTIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
 160                 return (-1);
 161         else
 162                 return (namecmp(a, b));
 163 }
 164
 165 int
 166 revstatcmp(a, b)
 167         const FTSENT *a, *b;
 168 {
 169         if (b->fts_statp->st_ctime > a->fts_statp->st_ctime)
 170                 return (-1);
 171         else if (b->fts_statp->st_ctime < a->fts_statp->st_ctime)
 172                 return (1);
 173         else if (CTIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
 174                 return (-1);
 175         else if (CTIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
 176                 return (1);
 177         else
 178                 return (revnamecmp(a, b));
 179 }
 180
 181 int
 182 sizecmp(a, b)
 183         const FTSENT *a, *b;
 184 {
 185         if (b->fts_statp->st_size > a->fts_statp->st_size)
 186                 return (1);
 187         if (b->fts_statp->st_size < a->fts_statp->st_size)
 188                 return (-1);
 189         else
 190                 return (namecmp(a, b));
 191 }
 192
 193 int
 194 revsizecmp(a, b)
 195         const FTSENT *a, *b;
 196 {
 197         if (b->fts_statp->st_size > a->fts_statp->st_size)
 198                 return (-1);
 199         if (b->fts_statp->st_size < a->fts_statp->st_size)
 200                 return (1);
 201         else
 202                 return (revnamecmp(a, b));
 203 }