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/* $OpenBSD: basename.c,v 1.14 2016/10/28 07:22:59 schwarze Exp $ */
/* $NetBSD: basename.c,v 1.9 1995/09/02 05:29:46 jtc Exp $ */
/*-
* 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.
*/
#include <err.h>
#include <libgen.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
static void __dead usage(void);
int
main(int argc, char *argv[])
{
int ch;
char *p;
if (pledge("stdio", NULL) == -1)
err(1, "pledge");
while ((ch = getopt(argc, argv, "")) != -1) {
switch (ch) {
default:
usage();
}
}
argc -= optind;
argv += optind;
if (argc != 1 && argc != 2)
usage();
if (**argv == '\0') {
(void)puts("");
return 0;
}
p = basename(*argv);
if (p == NULL)
err(1, "%s", *argv);
/*
* If the suffix operand is present, is not identical to the
* characters remaining in string, and is identical to a suffix
* of the characters remaining in string, the suffix suffix
* shall be removed from string.
*/
if (*++argv) {
size_t suffixlen, stringlen, off;
suffixlen = strlen(*argv);
stringlen = strlen(p);
if (suffixlen < stringlen) {
off = stringlen - suffixlen;
if (!strcmp(p + off, *argv))
p[off] = '\0';
}
}
(void)puts(p);
return 0;
}
extern char *__progname;
static void __dead
usage(void)
{
(void)fprintf(stderr, "usage: %s string [suffix]\n", __progname);
exit(1);
}
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