17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * Copyright (c) 1990, 1993
37c478bd9Sstevel@tonic-gate  *	The Regents of the University of California.  All rights reserved.
47c478bd9Sstevel@tonic-gate  *
57c478bd9Sstevel@tonic-gate  * Redistribution and use in source and binary forms, with or without
67c478bd9Sstevel@tonic-gate  * modification, are permitted provided that the following conditions
77c478bd9Sstevel@tonic-gate  * are met:
87c478bd9Sstevel@tonic-gate  * 1. Redistributions of source code must retain the above copyright
97c478bd9Sstevel@tonic-gate  *    notice, this list of conditions and the following disclaimer.
107c478bd9Sstevel@tonic-gate  * 2. Redistributions in binary form must reproduce the above copyright
117c478bd9Sstevel@tonic-gate  *    notice, this list of conditions and the following disclaimer in the
127c478bd9Sstevel@tonic-gate  *    documentation and/or other materials provided with the distribution.
137c478bd9Sstevel@tonic-gate  * 3. All advertising materials mentioning features or use of this software
147c478bd9Sstevel@tonic-gate  *    must display the following acknowledgement:
157c478bd9Sstevel@tonic-gate  *	This product includes software developed by the University of
167c478bd9Sstevel@tonic-gate  *	California, Berkeley and its contributors.
177c478bd9Sstevel@tonic-gate  * 4. Neither the name of the University nor the names of its contributors
187c478bd9Sstevel@tonic-gate  *    may be used to endorse or promote products derived from this software
197c478bd9Sstevel@tonic-gate  *    without specific prior written permission.
207c478bd9Sstevel@tonic-gate  *
217c478bd9Sstevel@tonic-gate  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
227c478bd9Sstevel@tonic-gate  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
237c478bd9Sstevel@tonic-gate  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
247c478bd9Sstevel@tonic-gate  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
257c478bd9Sstevel@tonic-gate  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
267c478bd9Sstevel@tonic-gate  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
277c478bd9Sstevel@tonic-gate  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
287c478bd9Sstevel@tonic-gate  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
297c478bd9Sstevel@tonic-gate  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
307c478bd9Sstevel@tonic-gate  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
317c478bd9Sstevel@tonic-gate  * SUCH DAMAGE.
327c478bd9Sstevel@tonic-gate  */
337c478bd9Sstevel@tonic-gate 
347c478bd9Sstevel@tonic-gate #include "port_before.h"
357c478bd9Sstevel@tonic-gate #include <sys/cdefs.h>
367c478bd9Sstevel@tonic-gate #include <string.h>
377c478bd9Sstevel@tonic-gate #include <stdio.h>
387c478bd9Sstevel@tonic-gate #include "port_after.h"
397c478bd9Sstevel@tonic-gate 
407c478bd9Sstevel@tonic-gate #ifndef NEED_STRSEP
417c478bd9Sstevel@tonic-gate int __strsep_unneeded__;
427c478bd9Sstevel@tonic-gate #else
437c478bd9Sstevel@tonic-gate 
44*9525b14bSRao Shoaib /*%
457c478bd9Sstevel@tonic-gate  * Get next token from string *stringp, where tokens are possibly-empty
467c478bd9Sstevel@tonic-gate  * strings separated by characters from delim.
477c478bd9Sstevel@tonic-gate  *
487c478bd9Sstevel@tonic-gate  * Writes NULs into the string at *stringp to end tokens.
497c478bd9Sstevel@tonic-gate  * delim need not remain constant from call to call.
507c478bd9Sstevel@tonic-gate  * On return, *stringp points past the last NUL written (if there might
517c478bd9Sstevel@tonic-gate  * be further tokens), or is NULL (if there are definitely no more tokens).
527c478bd9Sstevel@tonic-gate  *
537c478bd9Sstevel@tonic-gate  * If *stringp is NULL, strsep returns NULL.
547c478bd9Sstevel@tonic-gate  */
557c478bd9Sstevel@tonic-gate char *
strsep(char ** stringp,const char * delim)567c478bd9Sstevel@tonic-gate strsep(char **stringp, const char *delim) {
577c478bd9Sstevel@tonic-gate 	char *s;
587c478bd9Sstevel@tonic-gate 	const char *spanp;
597c478bd9Sstevel@tonic-gate 	int c, sc;
607c478bd9Sstevel@tonic-gate 	char *tok;
617c478bd9Sstevel@tonic-gate 
627c478bd9Sstevel@tonic-gate 	if ((s = *stringp) == NULL)
637c478bd9Sstevel@tonic-gate 		return (NULL);
647c478bd9Sstevel@tonic-gate 	for (tok = s;;) {
657c478bd9Sstevel@tonic-gate 		c = *s++;
667c478bd9Sstevel@tonic-gate 		spanp = delim;
677c478bd9Sstevel@tonic-gate 		do {
687c478bd9Sstevel@tonic-gate 			if ((sc = *spanp++) == c) {
697c478bd9Sstevel@tonic-gate 				if (c == 0)
707c478bd9Sstevel@tonic-gate 					s = NULL;
717c478bd9Sstevel@tonic-gate 				else
727c478bd9Sstevel@tonic-gate 					s[-1] = 0;
737c478bd9Sstevel@tonic-gate 				*stringp = s;
747c478bd9Sstevel@tonic-gate 				return (tok);
757c478bd9Sstevel@tonic-gate 			}
767c478bd9Sstevel@tonic-gate 		} while (sc != 0);
777c478bd9Sstevel@tonic-gate 	}
787c478bd9Sstevel@tonic-gate 	/* NOTREACHED */
797c478bd9Sstevel@tonic-gate }
807c478bd9Sstevel@tonic-gate 
817c478bd9Sstevel@tonic-gate #endif /*NEED_STRSEP*/
82*9525b14bSRao Shoaib 
83*9525b14bSRao Shoaib /*! \file */
84