text: /*
   * Copyright (c) 1988 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
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. 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 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 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 <string.h>
  
  char *
  __strtok_r (register char *s,
  	register const char *delim,
  	char **lasts,
  	int skip_leading_delim)
  {
  	register char *spanp;
  	register int c, sc;
  	char *tok;
  
  
  	if (s == NULL && (s = *lasts) == 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) {
  			if (skip_leading_delim) {
  				goto cont;
  			}
  			else {
  				*lasts = s;
  				s[-1] = 0;
  				return (s - 1);
  			}
  		}
  	}
  
  	if (c == 0) {		/* no non-delimiter characters */
  		*lasts = 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;
  				*lasts = s;
  				return (tok);
  			}
  		} while (sc != 0);
  	}
  	/* NOTREACHED */
  }
  
  char *
  strtok_r (register char *__restrict s,
  	register const char *__restrict delim,
  	char **__restrict lasts)
  {
  	return __strtok_r (s, delim, lasts, 1);
  }
  