external/bsd/mdocml/dist/compat_strnlen.c

   1 #ifdef HAVE_CONFIG_H
   2 #include "config.h"
   3 #endif
   4
   5 #ifdef HAVE_STRNLEN
   6
   7 int dummy;
   8
   9 #else
  10
  11 /*      ($)OpenBSD: strnlen.c,v 1.4 2012/04/26 01:22:31 matthew Exp $   */
  12
  13 /*
  14  * Copyright (c) 2010 Todd C. Miller <Todd.Miller@courtesan.com>
  15  *
  16  * Permission to use, copy, modify, and distribute this software for any
  17  * purpose with or without fee is hereby granted, provided that the above
  18  * copyright notice and this permission notice appear in all copies.
  19  *
  20  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  21  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  22  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  23  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  24  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  25  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  26  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  27  */
  28
  29 #include <sys/types.h>
  30 #include <string.h>
  31
  32 size_t
  33 strnlen(const char *str, size_t maxlen)
  34 {
  35         const char *cp;
  36
  37         for (cp = str; maxlen != 0 && *cp != '\0'; cp++, maxlen--)
  38                 ;
  39
  40         return (size_t)(cp - str);
  41 }
  42
  43 #endif