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.  */
27 size_t
strnlen1(const char * string,size_t maxlen)28 strnlen1 (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