text: /* Part of publib.
  
     Copyright (c) 1994-2006 Lars Wirzenius.  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.
  
     THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
  */
  /*
   * strnlen.c -- give length of string, which needn't be zero terminated
   *
   * Part of publib.  See man page for more information
   * "@(#)publib-strutil:$Id: strnlen.c,v 1.1 1994/12/27 13:34:26 wirzeniu Exp $"
   */
  
  #include <assert.h>
  #include <string.h>
  #include "publib/strutil.h"
  
  size_t strnlen(const char *s, size_t n) {
  	const char *p;
  
  	p = memchr(s, '\0', n);
  	if (p == NULL)
  		return n;
  	return p-s;
  }
  