Home | History | Annotate | Line # | Download | only in find
main.c revision 1.4 
      1 /*-
      2  * Copyright (c) 1990, 1993
      3  *	The Regents of the University of California.  All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  */
     33 
     34 #ifndef lint
     35 /*static char sccsid[] = "@(#)main.c	8.1 (Berkeley) 6/6/93";*/
     36 static char rcsid[] = "$Id: main.c,v 1.4 1993/12/30 21:15:27 jtc Exp $";
     37 #endif /* not lint */
     38 
     39 #include <sys/types.h>
     40 #include <sys/stat.h>
     41 
     42 #include <err.h>
     43 #include <errno.h>
     44 #include <fcntl.h>
     45 #include <fts.h>
     46 #include <stdio.h>
     47 #include <stdlib.h>
     48 #include <time.h>
     49 
     50 #include "find.h"
     51 
     52 time_t now;			/* time find was run */
     53 int dotfd;			/* starting directory */
     54 int ftsoptions;			/* options for the ftsopen(3) call */
     55 int isdeprecated;		/* using deprecated syntax */
     56 int isdepth;			/* do directories on post-order visit */
     57 int isoutput;			/* user specified output operator */
     58 int isxargs;			/* don't permit xargs delimiting chars */
     59 
     60 static void usage __P((void));
     61 
     62 int
     63 main(argc, argv)
     64 	int argc;
     65 	char *argv[];
     66 {
     67 	register char **p, **start;
     68 	int ch;
     69 
     70 	(void)time(&now);	/* initialize the time-of-day */
     71 
     72 	p = start = argv;
     73 	ftsoptions = FTS_NOSTAT|FTS_PHYSICAL;
     74 	while ((ch = getopt(argc, argv, "Hdf:hXx")) != EOF)
     75 		switch(ch) {
     76 		case 'H':
     77 			ftsoptions |= FTS_COMFOLLOW;
     78 			break;
     79 		case 'd':
     80 			isdepth = 1;
     81 			break;
     82 		case 'f':
     83 			*p++ = optarg;
     84 			break;
     85 		case 'h':
     86 			ftsoptions &= ~FTS_PHYSICAL;
     87 			ftsoptions |= FTS_LOGICAL;
     88 			break;
     89 		case 'X':
     90 			isxargs = 1;
     91 			break;
     92 		case 'x':
     93 			ftsoptions &= ~FTS_NOSTAT;
     94 			ftsoptions |= FTS_XDEV;
     95 			break;
     96 		case '?':
     97 		default:
     98 			break;
     99 		}
    100 
    101 	argc -= optind;
    102 	argv += optind;
    103 
    104 	/* The first argument that starts with a -, or is a ! or a (, and all
    105 	 * subsequent arguments shall be interpreted as an expression ...
    106 	 * (POSIX.2).
    107 	 */
    108 	while (*argv) {
    109 		if (**argv == '-' ||
    110 		    ((*argv)[1] == '\0' && (**argv == '!' || **argv == '(')))
    111 			break;
    112 		*p++ = *argv++;
    113 	}
    114 
    115 	if (p == start)
    116 		usage();
    117 	*p = NULL;
    118 
    119 	if ((dotfd = open(".", O_RDONLY, 0)) < 0)
    120 		err(1, ".:");
    121 
    122 	find_execute(find_formplan(argv), start);
    123 	exit(0);
    124 }
    125 
    126 static void
    127 usage()
    128 {
    129 	(void)fprintf(stderr,
    130 	    "usage: find [-HdhXx] [-f file] [file ...] expression\n");
    131 	exit(1);
    132 }
    133