80 lines
1.9 KiB
C
80 lines
1.9 KiB
C
/* $OpenBSD: basename.c,v 1.14 2005/08/08 08:05:33 espie Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1997, 2004 Todd C. Miller <Todd.Miller@courtesan.com>
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <errno.h>
|
|
#include <libgen.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sys/param.h>
|
|
|
|
char *
|
|
basename_r(const char *path, char *bname)
|
|
{
|
|
const char *endp, *startp;
|
|
size_t len;
|
|
|
|
/* Empty or NULL string gets treated as "." */
|
|
if (path == NULL || *path == '\0') {
|
|
bname[0] = '.';
|
|
bname[1] = '\0';
|
|
return (bname);
|
|
}
|
|
|
|
/* Strip any trailing slashes */
|
|
endp = path + strlen(path) - 1;
|
|
while (endp > path && *endp == '/')
|
|
endp--;
|
|
|
|
/* All slashes becomes "/" */
|
|
if (endp == path && *endp == '/') {
|
|
bname[0] = '/';
|
|
bname[1] = '\0';
|
|
return (bname);
|
|
}
|
|
|
|
/* Find the start of the base */
|
|
startp = endp;
|
|
while (startp > path && *(startp - 1) != '/')
|
|
startp--;
|
|
|
|
len = endp - startp + 1;
|
|
if (len >= MAXPATHLEN) {
|
|
errno = ENAMETOOLONG;
|
|
return (NULL);
|
|
}
|
|
memcpy(bname, startp, len);
|
|
bname[len] = '\0';
|
|
return (bname);
|
|
}
|
|
|
|
char *
|
|
basename(const char *path)
|
|
{
|
|
static char *bname = NULL;
|
|
|
|
if (bname == NULL) {
|
|
bname = (char *)malloc(MAXPATHLEN);
|
|
if (bname == NULL)
|
|
return (NULL);
|
|
}
|
|
return (basename_r(path, bname));
|
|
}
|