1/* Find the length of STRING + 1, but scan at most MAXLEN bytes.
2   Copyright (C) 2005-2006, 2009-2012 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 3 of the License, or
7   (at your option) 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, see <http://www.gnu.org/licenses/>.  */
16
17#include <config.h>
18
19/* Specification.  */
20#include "strnlen1.h"
21
22#include <string.h>
23
24/* Find the length of STRING + 1, but scan at most MAXLEN bytes.
25   If no '\0' terminator is found in that many characters, return MAXLEN.  */
26/* This is the same as strnlen (string, maxlen - 1) + 1.  */
27size_t
28strnlen1 (const char *string, size_t maxlen)
29{
30  const char *end = (const char *) memchr (string, '\0', maxlen);
31  if (end != NULL)
32    return end - string + 1;
33  else
34    return maxlen;
35}
36