xref: /dragonfly/usr.bin/dirname/dirname.c (revision 91dc43dd)
1 /*-
2  * Copyright (c) 1991, 1993, 1994
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. Neither the name of the University nor the names of its contributors
14  *    may be used to endorse or promote products derived from this software
15  *    without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  * $FreeBSD: src/usr.bin/dirname/dirname.c,v 1.5.6.2 2001/08/02 01:49:44 obrien Exp $
30  *
31  * @(#) Copyright (c) 1991, 1993, 1994 The Regents of the University of California.  All rights reserved.
32  * @(#)dirname.c	8.4 (Berkeley) 5/4/95
33  */
34 
35 #include <err.h>
36 #include <libgen.h>
37 #include <stdio.h>
38 #include <stdlib.h>
39 #include <unistd.h>
40 
41 static void	usage(void);
42 
43 int
44 main(int argc, char **argv)
45 {
46 	char *p;
47 	int ch;
48 
49 	/*
50 	 * No options supported
51 	 */
52 	while ((ch = getopt(argc, argv, "")) != -1) {
53 		switch(ch) {
54 		default:
55 			usage();
56 		}
57 	}
58 	argc -= optind;
59 	argv += optind;
60 
61 	if (argc < 1)
62 		usage();
63 
64 	while (argc--) {
65 		if ((p = dirname(*argv)) == NULL)
66 			err(1, "%s", *argv);
67 		argv++;
68 		printf("%s\n", p);
69 	}
70 	exit(0);
71 }
72 
73 static void
74 usage(void)
75 {
76 	fprintf(stderr, "usage: dirname path [...]\n");
77 	exit(1);
78 }
79