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Commit	Line	Data
	1	/*
	2	* Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com>
	3	* 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. The name of the author may not be used to endorse or promote products
	14	* derived from this software without specific prior written permission.
	15	*
	16	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
	17	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
	18	* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
	19	* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
	20	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
	21	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
	22	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
	23	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
	24	* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
	25	* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	26	*/
	27
	28	#if 0
	29	#ifndef lint
	30	static char rcsid[] = "$OpenBSD: basename.c,v 1.4 1999/05/30 17:10:30 espie Exp $";
	31	#endif /* not lint */
	32	#endif
	33	#include <sys/cdefs.h>
	34	__FBSDID("$FreeBSD: src/lib/libc/gen/basename.c,v 1.7 2002/12/30 01:41:14 marcel Exp $");
	35
	36	#include <errno.h>
	37	#include <libgen.h>
	38	#include <stdlib.h>
	39	#include <string.h>
	40	#include <sys/param.h>
	41
	42	char *
	43	basename_r(const char path, char bname)
	44	{
	45	const char endp, startp;
	46	size_t len;
	47
	48	/* Empty or NULL string gets treated as "." */
	49	if (path == NULL \|\| *path == '\0') {
	50	bname[0] = '.';
	51	bname[1] = '\0';
	52	return (bname);
	53	}
	54
	55	/* Strip any trailing slashes */
	56	endp = path + strlen(path) - 1;
	57	while (endp > path && *endp == '/')
	58	endp--;
	59
	60	/* All slashes becomes "/" */
	61	if (endp == path && *endp == '/') {
	62	bname[0] = '/';
	63	bname[1] = '\0';
	64	return (bname);
	65	}
	66
	67	/* Find the start of the base */
	68	startp = endp;
	69	while (startp > path && *(startp - 1) != '/')
	70	startp--;
	71
	72	len = endp - startp + 1;
	73	if (len >= MAXPATHLEN) {
	74	errno = ENAMETOOLONG;
	75	return (NULL);
	76	}
	77	memcpy(bname, startp, len);
	78	bname[len] = '\0';
	79	return (bname);
	80	}
	81
	82	#if __DARWIN_UNIX03
	83	#define const /**/
	84	#endif
	85
	86	char *
	87	basename(const char *path)
	88	{
	89	static char *bname = NULL;
	90
	91	if (bname == NULL) {
	92	bname = (char *)malloc(MAXPATHLEN);
	93	if (bname == NULL)
	94	return (NULL);
	95	}
	96	return (basename_r(path, bname));
	97	}