1*b811a51aSVladimir Kotal /*
2*b811a51aSVladimir Kotal * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
3*b811a51aSVladimir Kotal * Use is subject to license terms.
4*b811a51aSVladimir Kotal */
5*b811a51aSVladimir Kotal
67c478bd9Sstevel@tonic-gate /* $OpenBSD: strsep.c,v 1.3 1997/08/20 04:28:14 millert Exp $ */
77c478bd9Sstevel@tonic-gate
8*b811a51aSVladimir Kotal /*
97c478bd9Sstevel@tonic-gate * Copyright (c) 1990, 1993
107c478bd9Sstevel@tonic-gate * The Regents of the University of California. All rights reserved.
117c478bd9Sstevel@tonic-gate *
127c478bd9Sstevel@tonic-gate * Redistribution and use in source and binary forms, with or without
137c478bd9Sstevel@tonic-gate * modification, are permitted provided that the following conditions
147c478bd9Sstevel@tonic-gate * are met:
157c478bd9Sstevel@tonic-gate * 1. Redistributions of source code must retain the above copyright
167c478bd9Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer.
177c478bd9Sstevel@tonic-gate * 2. Redistributions in binary form must reproduce the above copyright
187c478bd9Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer in the
197c478bd9Sstevel@tonic-gate * documentation and/or other materials provided with the distribution.
207c478bd9Sstevel@tonic-gate * 3. All advertising materials mentioning features or use of this software
217c478bd9Sstevel@tonic-gate * must display the following acknowledgement:
227c478bd9Sstevel@tonic-gate * This product includes software developed by the University of
237c478bd9Sstevel@tonic-gate * California, Berkeley and its contributors.
247c478bd9Sstevel@tonic-gate * 4. Neither the name of the University nor the names of its contributors
257c478bd9Sstevel@tonic-gate * may be used to endorse or promote products derived from this software
267c478bd9Sstevel@tonic-gate * without specific prior written permission.
277c478bd9Sstevel@tonic-gate *
287c478bd9Sstevel@tonic-gate * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
297c478bd9Sstevel@tonic-gate * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
307c478bd9Sstevel@tonic-gate * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
317c478bd9Sstevel@tonic-gate * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
327c478bd9Sstevel@tonic-gate * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
337c478bd9Sstevel@tonic-gate * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
347c478bd9Sstevel@tonic-gate * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
357c478bd9Sstevel@tonic-gate * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
367c478bd9Sstevel@tonic-gate * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
377c478bd9Sstevel@tonic-gate * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
387c478bd9Sstevel@tonic-gate * SUCH DAMAGE.
397c478bd9Sstevel@tonic-gate */
407c478bd9Sstevel@tonic-gate
41*b811a51aSVladimir Kotal #include "lint.h"
427c478bd9Sstevel@tonic-gate #include <string.h>
437c478bd9Sstevel@tonic-gate #include <stdio.h>
447c478bd9Sstevel@tonic-gate
457c478bd9Sstevel@tonic-gate #if defined(LIBC_SCCS) && !defined(lint)
467c478bd9Sstevel@tonic-gate #if 0
477c478bd9Sstevel@tonic-gate static char sccsid[] = "@(#)strsep.c 8.1 (Berkeley) 6/4/93";
487c478bd9Sstevel@tonic-gate #else
49*b811a51aSVladimir Kotal static char *rcsid =
50*b811a51aSVladimir Kotal "$OpenBSD: strsep.c,v 1.3 1997/08/20 04:28:14 millert Exp $";
517c478bd9Sstevel@tonic-gate #endif
527c478bd9Sstevel@tonic-gate #endif /* LIBC_SCCS and not lint */
537c478bd9Sstevel@tonic-gate
547c478bd9Sstevel@tonic-gate /*
557c478bd9Sstevel@tonic-gate * Get next token from string *stringp, where tokens are possibly-empty
56*b811a51aSVladimir Kotal * strings separated by characters from delim.
577c478bd9Sstevel@tonic-gate *
587c478bd9Sstevel@tonic-gate * Writes NULs into the string at *stringp to end tokens.
597c478bd9Sstevel@tonic-gate * delim need not remain constant from call to call.
607c478bd9Sstevel@tonic-gate * On return, *stringp points past the last NUL written (if there might
617c478bd9Sstevel@tonic-gate * be further tokens), or is NULL (if there are definitely no more tokens).
627c478bd9Sstevel@tonic-gate *
637c478bd9Sstevel@tonic-gate * If *stringp is NULL, strsep returns NULL.
647c478bd9Sstevel@tonic-gate */
657c478bd9Sstevel@tonic-gate char *
strsep(char ** stringp,const char * delim)667c478bd9Sstevel@tonic-gate strsep(char **stringp, const char *delim)
677c478bd9Sstevel@tonic-gate {
687c478bd9Sstevel@tonic-gate register char *s;
697c478bd9Sstevel@tonic-gate register const char *spanp;
707c478bd9Sstevel@tonic-gate register int c, sc;
717c478bd9Sstevel@tonic-gate char *tok;
727c478bd9Sstevel@tonic-gate
737c478bd9Sstevel@tonic-gate if ((s = *stringp) == NULL)
747c478bd9Sstevel@tonic-gate return (NULL);
75*b811a51aSVladimir Kotal for (tok = s; ; ) {
767c478bd9Sstevel@tonic-gate c = *s++;
777c478bd9Sstevel@tonic-gate spanp = delim;
787c478bd9Sstevel@tonic-gate do {
797c478bd9Sstevel@tonic-gate if ((sc = *spanp++) == c) {
807c478bd9Sstevel@tonic-gate if (c == 0)
817c478bd9Sstevel@tonic-gate s = NULL;
827c478bd9Sstevel@tonic-gate else
837c478bd9Sstevel@tonic-gate s[-1] = 0;
847c478bd9Sstevel@tonic-gate *stringp = s;
857c478bd9Sstevel@tonic-gate return (tok);
867c478bd9Sstevel@tonic-gate }
877c478bd9Sstevel@tonic-gate } while (sc != 0);
887c478bd9Sstevel@tonic-gate }
897c478bd9Sstevel@tonic-gate /* NOTREACHED */
907c478bd9Sstevel@tonic-gate }
91