1/* Find the length of STRING, but scan at most MAXLEN characters.
2   Copyright (C) 2005, 2006 Free Software Foundation, Inc.
3   Written by Simon Josefsson.
4
5   This program is free software; you can redistribute it and/or modify
6   it under the terms of the GNU General Public License as published by
7   the Free Software Foundation; either version 2, or (at your option)
8   any later version.
9
10   This program is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13   GNU General Public License for more details.
14
15   You should have received a copy of the GNU General Public License
16   along with this program; if not, write to the Free Software Foundation,
17   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
18
19#ifdef HAVE_CONFIG_H
20# include <config.h>
21#endif
22
23#include "strnlen.h"
24
25/* Find the length of STRING, but scan at most MAXLEN characters.
26   If no '\0' terminator is found in that many characters, return MAXLEN.  */
27
28size_t
29strnlen (const char *string, size_t maxlen)
30{
31  const char *end = memchr (string, '\0', maxlen);
32  return end ? (size_t) (end - string) : maxlen;
33}
34