1*84d7e2a2Sschwarze /* $OpenBSD: basename.c,v 1.14 2016/10/28 07:22:59 schwarze Exp $ */
2df930be7Sderaadt /* $NetBSD: basename.c,v 1.9 1995/09/02 05:29:46 jtc Exp $ */
3df930be7Sderaadt
4df930be7Sderaadt /*-
5df930be7Sderaadt * Copyright (c) 1991, 1993, 1994
6df930be7Sderaadt * The Regents of the University of California. All rights reserved.
7df930be7Sderaadt *
8df930be7Sderaadt * Redistribution and use in source and binary forms, with or without
9df930be7Sderaadt * modification, are permitted provided that the following conditions
10df930be7Sderaadt * are met:
11df930be7Sderaadt * 1. Redistributions of source code must retain the above copyright
12df930be7Sderaadt * notice, this list of conditions and the following disclaimer.
13df930be7Sderaadt * 2. Redistributions in binary form must reproduce the above copyright
14df930be7Sderaadt * notice, this list of conditions and the following disclaimer in the
15df930be7Sderaadt * documentation and/or other materials provided with the distribution.
16f75387cbSmillert * 3. Neither the name of the University nor the names of its contributors
17df930be7Sderaadt * may be used to endorse or promote products derived from this software
18df930be7Sderaadt * without specific prior written permission.
19df930be7Sderaadt *
20df930be7Sderaadt * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21df930be7Sderaadt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22df930be7Sderaadt * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23df930be7Sderaadt * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24df930be7Sderaadt * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25df930be7Sderaadt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26df930be7Sderaadt * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27df930be7Sderaadt * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28df930be7Sderaadt * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29df930be7Sderaadt * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30df930be7Sderaadt * SUCH DAMAGE.
31df930be7Sderaadt */
32df930be7Sderaadt
33ab2efd0eSotto #include <err.h>
34ab2efd0eSotto #include <libgen.h>
35df930be7Sderaadt #include <stdio.h>
36df930be7Sderaadt #include <stdlib.h>
37df930be7Sderaadt #include <string.h>
38df930be7Sderaadt #include <unistd.h>
39df930be7Sderaadt
40*84d7e2a2Sschwarze static void __dead usage(void);
41df930be7Sderaadt
42df930be7Sderaadt int
main(int argc,char * argv[])431837a5caSderaadt main(int argc, char *argv[])
44df930be7Sderaadt {
45ab2efd0eSotto int ch;
46df930be7Sderaadt char *p;
47df930be7Sderaadt
480bd1216cSderaadt if (pledge("stdio", NULL) == -1)
490bd1216cSderaadt err(1, "pledge");
509d896fa1Sderaadt
51ab2efd0eSotto while ((ch = getopt(argc, argv, "")) != -1) {
52ab2efd0eSotto switch (ch) {
53ab2efd0eSotto default:
54df930be7Sderaadt usage();
55df930be7Sderaadt }
56df930be7Sderaadt }
57ab2efd0eSotto argc -= optind;
58ab2efd0eSotto argv += optind;
59df930be7Sderaadt
60ab2efd0eSotto if (argc != 1 && argc != 2)
61ab2efd0eSotto usage();
62df930be7Sderaadt
63e21804c7Sotto if (**argv == '\0') {
64e21804c7Sotto (void)puts("");
65*84d7e2a2Sschwarze return 0;
66e21804c7Sotto }
67ab2efd0eSotto p = basename(*argv);
68ab2efd0eSotto if (p == NULL)
69ab2efd0eSotto err(1, "%s", *argv);
70df930be7Sderaadt /*
71ab2efd0eSotto * If the suffix operand is present, is not identical to the
72df930be7Sderaadt * characters remaining in string, and is identical to a suffix
73df930be7Sderaadt * of the characters remaining in string, the suffix suffix
74df930be7Sderaadt * shall be removed from string.
75df930be7Sderaadt */
76df930be7Sderaadt if (*++argv) {
77ab2efd0eSotto size_t suffixlen, stringlen, off;
78df930be7Sderaadt
79df930be7Sderaadt suffixlen = strlen(*argv);
80df930be7Sderaadt stringlen = strlen(p);
81df930be7Sderaadt
82df930be7Sderaadt if (suffixlen < stringlen) {
83df930be7Sderaadt off = stringlen - suffixlen;
84df930be7Sderaadt if (!strcmp(p + off, *argv))
85df930be7Sderaadt p[off] = '\0';
86df930be7Sderaadt }
87df930be7Sderaadt }
882797883aSmillert (void)puts(p);
89665eb065Smmcc return 0;
90df930be7Sderaadt }
91df930be7Sderaadt
92ab2efd0eSotto extern char *__progname;
93*84d7e2a2Sschwarze
94*84d7e2a2Sschwarze static void __dead
usage(void)951837a5caSderaadt usage(void)
96df930be7Sderaadt {
97df930be7Sderaadt
98ab2efd0eSotto (void)fprintf(stderr, "usage: %s string [suffix]\n", __progname);
99df930be7Sderaadt exit(1);
100df930be7Sderaadt }
101