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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
#include <string.h>
#define isdot(x) ((x[0] == '.') && (!x[1] || (x[1] == '/')))
#define isdotdot(x) ((x[0] == '.') && (x[1] == '.') && \
(!x[2] || (x[2] == '/')))
void
canonize(char *file)
{
char *pt, *last;
int level;
/* remove references such as "./" and "../" and "//" */
for (pt = file; *pt; /* void */) {
if (isdot(pt))
(void) strcpy(pt, pt[1] ? pt+2 : pt+1);
else if (isdotdot(pt)) {
level = 0;
last = pt;
do {
level++;
last += 2;
if (*last)
last++;
} while (isdotdot(last));
--pt; /* point to previous '/' */
while (level--) {
if (pt <= file)
return;
while ((*--pt != '/') && (pt > file))
;
}
if (*pt == '/')
pt++;
(void) strcpy(pt, last);
} else {
while (*pt && (*pt != '/'))
pt++;
if (*pt == '/') {
while (pt[1] == '/')
(void) strcpy(pt, pt+1);
pt++;
}
}
}
if ((--pt > file) && (*pt == '/'))
*pt = '\0';
}
void
canonize_slashes(char *file)
{
char *pt;
/* remove references such as "//" */
for (pt = file; *pt; /* void */) {
while (*pt && (*pt != '/'))
pt++;
if (*pt == '/') {
while (pt[1] == '/')
(void) strcpy(pt, pt+1);
pt++;
}
}
if ((--pt > file) && (*pt == '/'))
*pt = '\0';
}
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