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 #else
  61 #define ATIMENSEC_CMP(x, op, y) \
  62         ((x)->st_atimespec.tv_nsec op (y)->st_atimespec.tv_nsec)
  63 #define CTIMENSEC_CMP(x, op, y) \
  64         ((x)->st_ctimespec.tv_nsec op (y)->st_ctimespec.tv_nsec)
  65 #define MTIMENSEC_CMP(x, op, y) \
  66         ((x)->st_mtimespec.tv_nsec op (y)->st_mtimespec.tv_nsec)
  67 #endif
  68
  69 int
  70 namecmp(const FTSENT *a, const FTSENT *b)
  71 {
  72         return (strcoll(a->fts_name, b->fts_name));
  73 }
  74
  75 int
  76 revnamecmp(const FTSENT *a, const FTSENT *b)
  77 {
  78         return (strcoll(b->fts_name, a->fts_name));
  79 }
  80
  81 int
  82 modcmp(const FTSENT *a, const FTSENT *b)
  83 {
  84         if (b->fts_statp->st_mtime > a->fts_statp->st_mtime)
  85                 return (1);
  86         else if (b->fts_statp->st_mtime < a->fts_statp->st_mtime)
  87                 return (-1);
  88         else if (MTIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
  89                 return (1);
  90         else if (MTIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
  91                 return (-1);
  92         else
  93                 return (namecmp(a, b));
  94 }
  95
  96 int
  97 revmodcmp(const FTSENT *a, const FTSENT *b)
  98 {
  99         if (b->fts_statp->st_mtime > a->fts_statp->st_mtime)
 100                 return (-1);
 101         else if (b->fts_statp->st_mtime < a->fts_statp->st_mtime)
 102                 return (1);
 103         else if (MTIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
 104                 return (-1);
 105         else if (MTIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
 106                 return (1);
 107         else
 108                 return (revnamecmp(a, b));
 109 }
 110
 111 int
 112 acccmp(const FTSENT *a, const FTSENT *b)
 113 {
 114         if (b->fts_statp->st_atime > a->fts_statp->st_atime)
 115                 return (1);
 116         else if (b->fts_statp->st_atime < a->fts_statp->st_atime)
 117                 return (-1);
 118         else if (ATIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
 119                 return (1);
 120         else if (ATIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
 121                 return (-1);
 122         else
 123                 return (namecmp(a, b));
 124 }
 125
 126 int
 127 revacccmp(const FTSENT *a, const FTSENT *b)
 128 {
 129         if (b->fts_statp->st_atime > a->fts_statp->st_atime)
 130                 return (-1);
 131         else if (b->fts_statp->st_atime < a->fts_statp->st_atime)
 132                 return (1);
 133         else if (ATIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
 134                 return (-1);
 135         else if (ATIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
 136                 return (1);
 137         else
 138                 return (revnamecmp(a, b));
 139 }
 140
 141 int
 142 statcmp(const FTSENT *a, const FTSENT *b)
 143 {
 144         if (b->fts_statp->st_ctime > a->fts_statp->st_ctime)
 145                 return (1);
 146         else if (b->fts_statp->st_ctime < a->fts_statp->st_ctime)
 147                 return (-1);
 148         else if (CTIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
 149                 return (1);
 150         else if (CTIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
 151                 return (-1);
 152         else
 153                 return (namecmp(a, b));
 154 }
 155
 156 int
 157 revstatcmp(const FTSENT *a, const FTSENT *b)
 158 {
 159         if (b->fts_statp->st_ctime > a->fts_statp->st_ctime)
 160                 return (-1);
 161         else if (b->fts_statp->st_ctime < a->fts_statp->st_ctime)
 162                 return (1);
 163         else if (CTIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
 164                 return (-1);
 165         else if (CTIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
 166                 return (1);
 167         else
 168                 return (revnamecmp(a, b));
 169 }
 170
 171 int
 172 sizecmp(a, b)
 173         const FTSENT *a, *b;
 174 {
 175         if (b->fts_statp->st_size > a->fts_statp->st_size)
 176                 return (1);
 177         if (b->fts_statp->st_size < a->fts_statp->st_size)
 178                 return (-1);
 179         else
 180                 return (namecmp(a, b));
 181 }
 182
 183 int
 184 revsizecmp(a, b)
 185         const FTSENT *a, *b;
 186 {
 187         if (b->fts_statp->st_size > a->fts_statp->st_size)
 188                 return (-1);
 189         if (b->fts_statp->st_size < a->fts_statp->st_size)
 190                 return (1);
 191         else
 192                 return (revnamecmp(a, b));
 193 }