mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-20 11:11:24 +00:00
77 lines
2.5 KiB
C
77 lines
2.5 KiB
C
/* $OpenBSD: basename.c,v 1.4 1999/05/30 17:10:30 espie Exp $ */
|
|
/* $FreeBSD$ */
|
|
|
|
/*
|
|
* Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com>
|
|
* 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. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED ``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 AUTHOR 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 char rcsid[] = "$OpenBSD: basename.c,v 1.4 1999/05/30 17:10:30 espie Exp $";
|
|
#endif /* not lint */
|
|
|
|
#include <errno.h>
|
|
#include <libgen.h>
|
|
#include <string.h>
|
|
#include <sys/param.h>
|
|
|
|
char *
|
|
basename(path)
|
|
const char *path;
|
|
{
|
|
static char bname[MAXPATHLEN];
|
|
register const char *endp, *startp;
|
|
|
|
/* Empty or NULL string gets treated as "." */
|
|
if (path == NULL || *path == '\0') {
|
|
(void)strcpy(bname, ".");
|
|
return(bname);
|
|
}
|
|
|
|
/* Strip trailing slashes */
|
|
endp = path + strlen(path) - 1;
|
|
while (endp > path && *endp == '/')
|
|
endp--;
|
|
|
|
/* All slashes becomes "/" */
|
|
if (endp == path && *endp == '/') {
|
|
(void)strcpy(bname, "/");
|
|
return(bname);
|
|
}
|
|
|
|
/* Find the start of the base */
|
|
startp = endp;
|
|
while (startp > path && *(startp - 1) != '/')
|
|
startp--;
|
|
|
|
if (endp - startp + 2 > sizeof(bname)) {
|
|
errno = ENAMETOOLONG;
|
|
return(NULL);
|
|
}
|
|
(void)strncpy(bname, startp, endp - startp + 1);
|
|
bname[endp - startp + 1] = '\0';
|
|
return(bname);
|
|
}
|