main.c revision 17534 
1/*-
2 * Copyright (c) 1990, 1993, 1994
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Cimarron D. Taylor of the University of California, Berkeley.
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#ifndef lint
38char copyright[] =
39"@(#) Copyright (c) 1990, 1993, 1994\n\
40	The Regents of the University of California.  All rights reserved.\n";
41#endif /* not lint */
42
43#ifndef lint
44static char sccsid[] = "@(#)main.c	8.3 (Berkeley) 4/16/94";
45#endif /* not lint */
46
47#include <sys/types.h>
48#include <sys/stat.h>
49
50#include <err.h>
51#include <errno.h>
52#include <fcntl.h>
53#include <fts.h>
54#include <locale.h>
55#include <stdio.h>
56#include <stdlib.h>
57#include <time.h>
58
59#include "find.h"
60
61time_t now;			/* time find was run */
62int dotfd;			/* starting directory */
63int ftsoptions;			/* options for the ftsopen(3) call */
64int isdeprecated;		/* using deprecated syntax */
65int isdepth;			/* do directories on post-order visit */
66int isoutput;			/* user specified output operator */
67int isxargs;			/* don't permit xargs delimiting chars */
68
69static void usage __P((void));
70
71int
72main(argc, argv)
73	int argc;
74	char *argv[];
75{
76	register char **p, **start;
77	int Hflag, Lflag, Pflag, ch;
78
79	(void)setlocale(LC_ALL, "");
80
81	(void)time(&now);	/* initialize the time-of-day */
82
83	p = start = argv;
84	Hflag = Lflag = Pflag = 0;
85	ftsoptions = FTS_NOSTAT | FTS_PHYSICAL;
86	while ((ch = getopt(argc, argv, "HLPXdf:x")) != EOF)
87		switch (ch) {
88		case 'H':
89			Hflag = 1;
90			Lflag = Pflag = 0;
91			break;
92		case 'L':
93			Lflag = 1;
94			Hflag = Pflag = 0;
95			break;
96		case 'P':
97			Pflag = 1;
98			Hflag = Lflag = 0;
99			break;
100		case 'X':
101			isxargs = 1;
102			break;
103		case 'd':
104			isdepth = 1;
105			break;
106		case 'f':
107			*p++ = optarg;
108			break;
109		case 'x':
110			ftsoptions |= FTS_XDEV;
111			break;
112		case '?':
113		default:
114			break;
115		}
116
117	argc -= optind;
118	argv += optind;
119
120	if (Hflag)
121		ftsoptions |= FTS_COMFOLLOW;
122	if (Lflag) {
123		ftsoptions &= ~FTS_PHYSICAL;
124		ftsoptions |= FTS_LOGICAL;
125	}
126
127	/*
128	 * Find first option to delimit the file list.  The first argument
129	 * that starts with a -, or is a ! or a ( must be interpreted as a
130	 * part of the find expression, according to POSIX .2.
131	 */
132	for (; *argv != NULL; *p++ = *argv++) {
133		if (argv[0][0] == '-')
134			break;
135		if ((argv[0][0] == '!' || argv[0][0] == '(') &&
136		    argv[0][1] == '\0')
137			break;
138	}
139
140	if (p == start)
141		usage();
142	*p = NULL;
143
144	if ((dotfd = open(".", O_RDONLY, 0)) < 0)
145		err(1, ".");
146
147	exit(find_execute(find_formplan(argv), start));
148}
149
150static void
151usage()
152{
153	(void)fprintf(stderr,
154"usage: find [-H | -L | -P] [-Xdx] [-f file] [file ...] [expression]\n");
155	exit(1);
156}
157