1/* $NetBSD: cmp.c,v 1.17 2003/08/07 09:05:14 agc 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. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#include <sys/cdefs.h>
36#ifndef lint
37#if 0
38static char sccsid[] = "@(#)cmp.c 8.1 (Berkeley) 5/31/93";
39#else
40__RCSID("$NetBSD: cmp.c,v 1.17 2003/08/07 09:05:14 agc Exp $");
41#endif
42#endif /* not lint */
43
44#include <sys/types.h>
45#include <sys/stat.h>
46
47#include <fts.h>
48#include <string.h>
49
50#include "ls.h"
51#include "extern.h"
52
53#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) || \
54 defined(_XOPEN_SOURCE) || defined(__NetBSD__)
55#define ATIMENSEC_CMP(x, op, y) ((x)->st_atimensec op (y)->st_atimensec)
56#define CTIMENSEC_CMP(x, op, y) ((x)->st_ctimensec op (y)->st_ctimensec)
57#define MTIMENSEC_CMP(x, op, y) ((x)->st_mtimensec op (y)->st_mtimensec)
58#else
59#define ATIMENSEC_CMP(x, op, y) \
60 ((x)->st_atimespec.tv_nsec op (y)->st_atimespec.tv_nsec)
61#define CTIMENSEC_CMP(x, op, y) \
62 ((x)->st_ctimespec.tv_nsec op (y)->st_ctimespec.tv_nsec)
63#define MTIMENSEC_CMP(x, op, y) \
64 ((x)->st_mtimespec.tv_nsec op (y)->st_mtimespec.tv_nsec)
65#endif
66
67int
68namecmp(const FTSENT *a, const FTSENT *b)
69{
70
71 return (strcmp(a->fts_name, b->fts_name));
72}
73
74int
75revnamecmp(const FTSENT *a, const FTSENT *b)
76{
77
78 return (strcmp(b->fts_name, a->fts_name));
79}
80
81int
82modcmp(const FTSENT *a, const FTSENT *b)
83{
84
85 if (b->fts_statp->st_mtime > a->fts_statp->st_mtime)
86 return (1);
87 else if (b->fts_statp->st_mtime < a->fts_statp->st_mtime)
88 return (-1);
89 else if (MTIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
90 return (1);
91 else if (MTIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
92 return (-1);
93 else
94 return (namecmp(a, b));
95}
96
97int
98revmodcmp(const FTSENT *a, const FTSENT *b)
99{
100
101 if (b->fts_statp->st_mtime > a->fts_statp->st_mtime)
102 return (-1);
103 else if (b->fts_statp->st_mtime < a->fts_statp->st_mtime)
104 return (1);
105 else if (MTIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
106 return (-1);
107 else if (MTIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
108 return (1);
109 else
110 return (revnamecmp(a, b));
111}
112
113int
114acccmp(const FTSENT *a, const FTSENT *b)
115{
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
129int
130revacccmp(const FTSENT *a, const FTSENT *b)
131{
132
133 if (b->fts_statp->st_atime > a->fts_statp->st_atime)
134 return (-1);
135 else if (b->fts_statp->st_atime < a->fts_statp->st_atime)
136 return (1);
137 else if (ATIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
138 return (-1);
139 else if (ATIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
140 return (1);
141 else
142 return (revnamecmp(a, b));
143}
144
145int
146statcmp(const FTSENT *a, const FTSENT *b)
147{
148
149 if (b->fts_statp->st_ctime > a->fts_statp->st_ctime)
150 return (1);
151 else if (b->fts_statp->st_ctime < a->fts_statp->st_ctime)
152 return (-1);
153 else if (CTIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
154 return (1);
155 else if (CTIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
156 return (-1);
157 else
158 return (namecmp(a, b));
159}
160
161int
162revstatcmp(const FTSENT *a, const FTSENT *b)
163{
164
165 if (b->fts_statp->st_ctime > a->fts_statp->st_ctime)
166 return (-1);
167 else if (b->fts_statp->st_ctime < a->fts_statp->st_ctime)
168 return (1);
169 else if (CTIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
170 return (-1);
171 else if (CTIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
172 return (1);
173 else
174 return (revnamecmp(a, b));
175}
176
177int
178sizecmp(const FTSENT *a, const FTSENT *b)
179{
180
181 if (b->fts_statp->st_size > a->fts_statp->st_size)
182 return (1);
183 if (b->fts_statp->st_size < a->fts_statp->st_size)
184 return (-1);
185 else
186 return (namecmp(a, b));
187}
188
189int
190revsizecmp(const FTSENT *a, const FTSENT *b)
191{
192
193 if (b->fts_statp->st_size > a->fts_statp->st_size)
194 return (-1);
195 if (b->fts_statp->st_size < a->fts_statp->st_size)
196 return (1);
197 else
198 return (revnamecmp(a, b));
199}
200