2 * Copyright (c) 1991, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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 * 4. 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.
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
31 static const char copyright[] =
32 "@(#) Copyright (c) 1991, 1993, 1994\n\
33 The Regents of the University of California. All rights reserved.\n";
38 static char sccsid[] = "@(#)basename.c 8.4 (Berkeley) 5/4/95";
42 #include <sys/cdefs.h>
43 __FBSDID("$FreeBSD$");
55 void stripsuffix(char *, const char *, size_t);
59 main(int argc, char **argv)
65 setlocale(LC_ALL, "");
71 while ((ch = getopt(argc, argv, "as:")) != -1)
93 if ((p = basename(argv[0])) == NULL)
94 err(1, "%s", argv[0]);
95 if ((suffix == NULL && !aflag) && argc == 2) {
100 suffixlen = strlen(suffix);
102 if ((p = basename(*argv)) == NULL)
103 err(1, "%s", argv[0]);
104 stripsuffix(p, suffix, suffixlen);
106 (void)printf("%s\n", p);
112 stripsuffix(char *p, const char *suffix, size_t suffixlen)
118 if (suffixlen && (q = strchr(p, '\0') - suffixlen) > p &&
119 strcmp(suffix, q) == 0) {
120 /* Ensure that the match occurred on a character boundary. */
121 memset(&mbs, 0, sizeof(mbs));
122 for (r = p; r < q; r += n) {
123 n = mbrlen(r, MB_LEN_MAX, &mbs);
124 if (n == (size_t)-1 || n == (size_t)-2) {
125 memset(&mbs, 0, sizeof(mbs));
129 /* Chop off the suffix. */
139 (void)fprintf(stderr,
140 "usage: basename string [suffix]\n"
141 " basename [-a] [-s suffix] string [...]\n");