1/* Find the length of STRING, but scan at most MAXLEN characters.
2   Copyright (C) 2005, 2006, 2007 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#include <config.h>
20
21#include <string.h>
22
23/* Find the length of STRING, but scan at most MAXLEN characters.
24   If no '\0' terminator is found in that many characters, return MAXLEN.  */
25
26size_t
27strnlen (const char *string, size_t maxlen)
28{
29  const char *end = memchr (string, '\0', maxlen);
30  return end ? (size_t) (end - string) : maxlen;
31}
32