1/* Find the length of STRING + 1, but scan at most MAXLEN bytes.
2   Copyright (C) 2005-2006 Free Software Foundation, Inc.
3
4   This program is free software; you can redistribute it and/or modify
5   it under the terms of the GNU General Public License as published by
6   the Free Software Foundation; either version 2, or (at your option)
7   any later version.
8
9   This program is distributed in the hope that it will be useful,
10   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12   GNU General Public License for more details.
13
14   You should have received a copy of the GNU General Public License
15   along with this program; if not, write to the Free Software Foundation,
16   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
17
18#include <config.h>
19
20/* Specification.  */
21#include "strnlen1.h"
22
23#include <string.h>
24
25/* Find the length of STRING + 1, but scan at most MAXLEN bytes.
26   If no '\0' terminator is found in that many characters, return MAXLEN.  */
27/* This is the same as strnlen (string, maxlen - 1) + 1.  */
28size_t
29strnlen1 (const char *string, size_t maxlen)
30{
31  const char *end = (const char *) memchr (string, '\0', maxlen);
32  if (end != NULL)
33    return end - string + 1;
34  else
35    return maxlen;
36}
37