/*- * Copyright (c) 1998 Softweyr LLC.  All rights reserved. * * strtok_r, from Berkeley strtok * Oct 13, 1998 by Wes Peters <wes@softweyr.com> * * Copyright (c) 1988, 1993 *	The Regents of the University of California.  All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright *    notices, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright *    notices, this list of conditions and the following disclaimer in the *    documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software *    must display the following acknowledgement: *	This product includes software developed by Softweyr LLC, the *      University of California, Berkeley, and its contributors. * 4. Neither the name of the University nor the names of its contributors *    may be used to endorse or promote products derived from this software *    without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY SOFTWEYR LLC, THE REGENTS AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL SOFTWEYR LLC, THE * REGENTS, OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include <stddef.h>#include <string.h> char *strtok_r(char *s, const char *delim, char **last){	char *spanp, *tok;	int c, sc; 	if (s == NULL && (s = *last) == NULL)		return (NULL); 	/*	 * Skip (span) leading delimiters (s += strspn(s, delim), sort of).	 */cont:	c = *s++;	for (spanp = (char *)delim; (sc = *spanp++) != 0;) {		if (c == sc)			goto cont;	} 	if (c == 0) {		/* no non-delimiter characters */		*last = NULL;		return (NULL);	}	tok = s - 1; 	/*	 * Scan token (scan for delimiters: s += strcspn(s, delim), sort of).	 * Note that delim must have one NUL; we stop if we see that, too.	 */	for (;;) {		c = *s++;		spanp = (char *)delim;		do {			if ((sc = *spanp++) == c) {				if (c == 0)					s = NULL;				else					s[-1] = '\0';				*last = s;				return (tok);			}		} while (sc != 0);	}	/* NOTREACHED */} char *strtok(char *s, const char *delim){	static char *last; 	return (strtok_r(s, delim, &last));}