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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (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 (c) 1984 AT&T */
/* All Rights Reserved */
#pragma ident "%Z%%M% %I% %E% SMI" /* from S5R2 1.2 */
/*LINTLIBRARY*/
/*
* uses strpbrk and strspn to break string into tokens on
* sequentially subsequent calls. returns NULL when no
* non-separator characters remain.
* `subsequent' calls are calls with first argument NULL.
*/
#define NULL (char*)0
extern int strspn();
extern char *strpbrk();
char *
strtok(string, sepset)
char *string, *sepset;
{
register char *p, *q, *r;
static char *savept;
/*first or subsequent call*/
p = (string == NULL)? savept: string;
if(p == 0) /* return if no tokens remaining */
return(NULL);
q = p + strspn(p, sepset); /* skip leading separators */
if(*q == '\0') /* return if no tokens remaining */
return(NULL);
if((r = strpbrk(q, sepset)) == NULL) /* move past token */
savept = 0; /* indicate this is last token */
else {
*r = '\0';
savept = ++r;
}
return(q);
}
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