wstok.c revision 7257d1b4d25bfac0c802847390e98a464fd787ac
/*
* 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 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1986 AT&T */
/* All Rights Reserved */
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* uses wcspbrk and wcsspn to break string into tokens on
* sequentially subsequent calls. returns WNULL when no
* non-separator characters remain.
* 'subsequent' calls are calls with first argument WNULL.
*/
#pragma weak _wstok = wstok
#include "lint.h"
#include "mtlib.h"
#include "mse_int.h"
#include <stdlib.h>
#include <wchar.h>
#include <thread.h>
#include "libc.h"
#include "tsd.h"
#ifndef WNULL
#define WNULL (wchar_t *)0
#endif
wchar_t *
__wcstok_xpg5(wchar_t *string, const wchar_t *sepset, wchar_t **ptr)
{
wchar_t *q, *r;
/* first or subsequent call */
if ((string == WNULL && (string = *ptr) == 0) ||
(((q = string + wcsspn(string, sepset)) != WNULL) && *q == L'\0'))
return (WNULL);
/* sepset becomes next string after separator */
if ((r = wcspbrk(q, sepset)) == WNULL) /* move past token */
*ptr = 0; /* indicate this is last token */
else {
*r = L'\0';
*ptr = r + 1;
}
return (q);
}
wchar_t *
wcstok(wchar_t *string, const wchar_t *sepset)
{
wchar_t **lasts = tsdalloc(_T_WCSTOK, sizeof (wchar_t *), NULL);
if (lasts == NULL)
return (NULL);
return (__wcstok_xpg5(string, sepset, lasts));
}
wchar_t *
wstok(wchar_t *string, const wchar_t *sepset)
{
return (wcstok(string, sepset));
}