/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 1991, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static const char copyright[] =
"@(#) Copyright (c) 1991, 1993, 1994\n\
The Regents of the University of California. All rights reserved.\n";
#endif
#if 0
#ifndef lint
static char sccsid[] = "@(#)basename.c 8.4 (Berkeley) 5/4/95";
#endif /* not lint */
#endif
#include <sys/cdefs.h>
#include <capsicum_helpers.h>
#include <err.h>
#include <libgen.h>
#include <limits.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <wchar.h>
void stripsuffix(char *, const char *, size_t);
void usage(void);
int
main(int argc, char **argv)
{
char *p, *suffix;
size_t suffixlen;
int aflag, ch;
setlocale(LC_ALL, "");
if (caph_limit_stdio() < 0 || caph_enter() < 0)
err(1, "capsicum");
aflag = 0;
suffix = NULL;
suffixlen = 0;
while ((ch = getopt(argc, argv, "as:")) != -1)
switch(ch) {
case 'a':
aflag = 1;
break;
case 's':
suffix = optarg;
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
if (argc < 1)
usage();
if (!*argv[0]) {
printf("\n");
exit(0);
}
if ((p = basename(argv[0])) == NULL)
err(1, "%s", argv[0]);
if ((suffix == NULL && !aflag) && argc == 2) {
suffix = argv[1];
argc--;
}
if (suffix != NULL)
suffixlen = strlen(suffix);
while (argc--) {
if ((p = basename(*argv)) == NULL)
err(1, "%s", argv[0]);
stripsuffix(p, suffix, suffixlen);
argv++;
(void)printf("%s\n", p);
}
exit(0);
}
void
stripsuffix(char *p, const char *suffix, size_t suffixlen)
{
char *q, *r;
mbstate_t mbs;
size_t n;
if (suffixlen && (q = strchr(p, '\0') - suffixlen) > p &&
strcmp(suffix, q) == 0) {
/* Ensure that the match occurred on a character boundary. */
memset(&mbs, 0, sizeof(mbs));
for (r = p; r < q; r += n) {
n = mbrlen(r, MB_LEN_MAX, &mbs);
if (n == (size_t)-1 || n == (size_t)-2) {
memset(&mbs, 0, sizeof(mbs));
n = 1;
}
}
/* Chop off the suffix. */
if (q == r)
*q = '\0';
}
}
void
usage(void)
{
(void)fprintf(stderr,
"usage: basename string [suffix]\n"
" basename [-a] [-s suffix] string [...]\n");
exit(1);
}
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