102 lines
2.9 KiB
C
102 lines
2.9 KiB
C
/* $NetBSD: basename.c,v 1.11 2014/07/16 10:52:26 christos Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1997, 2002 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Klaus Klein and Jason R. Thorpe.
|
|
*
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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 <sys/cdefs.h>
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
__RCSID("$NetBSD: basename.c,v 1.11 2014/07/16 10:52:26 christos Exp $");
|
|
#endif /* !LIBC_SCCS && !lint */
|
|
|
|
#include "namespace.h"
|
|
#include <sys/param.h>
|
|
#include <libgen.h>
|
|
#include <string.h>
|
|
#include <limits.h>
|
|
#include <string.h>
|
|
|
|
#ifdef __weak_alias
|
|
__weak_alias(basename,_basename)
|
|
#endif
|
|
|
|
static size_t
|
|
xbasename_r(const char *path, char *buf, size_t buflen)
|
|
{
|
|
const char *startp, *endp;
|
|
size_t len;
|
|
|
|
/*
|
|
* If `path' is a null pointer or points to an empty string,
|
|
* return a pointer to the string ".".
|
|
*/
|
|
if (path == NULL || *path == '\0') {
|
|
startp = ".";
|
|
len = 1;
|
|
goto out;
|
|
}
|
|
|
|
/* Strip trailing slashes, if any. */
|
|
endp = path + strlen(path) - 1;
|
|
while (endp != path && *endp == '/')
|
|
endp--;
|
|
|
|
/* Only slashes -> "/" */
|
|
if (endp == path && *endp == '/') {
|
|
startp = "/";
|
|
len = 1;
|
|
goto out;
|
|
}
|
|
|
|
/* Now find the beginning of this (final) component. */
|
|
for (startp = endp; startp > path && *(startp - 1) != '/'; startp--)
|
|
continue;
|
|
|
|
/* ...and copy the result into the result buffer. */
|
|
len = (endp - startp) + 1 /* last char */;
|
|
out:
|
|
if (buf != NULL && buflen != 0) {
|
|
buflen = MIN(len, buflen - 1);
|
|
memcpy(buf, startp, buflen);
|
|
buf[buflen] = '\0';
|
|
}
|
|
return len;
|
|
}
|
|
|
|
#if !HAVE_BASENAME
|
|
|
|
char *
|
|
basename(char *path) {
|
|
static char result[PATH_MAX];
|
|
|
|
(void)xbasename_r(path, result, sizeof(result));
|
|
return result;
|
|
}
|
|
|
|
#endif
|