1*946379e7Schristos /* Find the length of STRING + 1, but scan at most MAXLEN bytes.
2*946379e7Schristos Copyright (C) 2005-2006 Free Software Foundation, Inc.
3*946379e7Schristos
4*946379e7Schristos This program is free software; you can redistribute it and/or modify
5*946379e7Schristos it under the terms of the GNU General Public License as published by
6*946379e7Schristos the Free Software Foundation; either version 2, or (at your option)
7*946379e7Schristos any later version.
8*946379e7Schristos
9*946379e7Schristos This program is distributed in the hope that it will be useful,
10*946379e7Schristos but WITHOUT ANY WARRANTY; without even the implied warranty of
11*946379e7Schristos MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12*946379e7Schristos GNU General Public License for more details.
13*946379e7Schristos
14*946379e7Schristos You should have received a copy of the GNU General Public License
15*946379e7Schristos along with this program; if not, write to the Free Software Foundation,
16*946379e7Schristos Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
17*946379e7Schristos
18*946379e7Schristos #include <config.h>
19*946379e7Schristos
20*946379e7Schristos /* Specification. */
21*946379e7Schristos #include "strnlen1.h"
22*946379e7Schristos
23*946379e7Schristos #include <string.h>
24*946379e7Schristos
25*946379e7Schristos /* Find the length of STRING + 1, but scan at most MAXLEN bytes.
26*946379e7Schristos If no '\0' terminator is found in that many characters, return MAXLEN. */
27*946379e7Schristos /* This is the same as strnlen (string, maxlen - 1) + 1. */
28*946379e7Schristos size_t
strnlen1(const char * string,size_t maxlen)29*946379e7Schristos strnlen1 (const char *string, size_t maxlen)
30*946379e7Schristos {
31*946379e7Schristos const char *end = memchr (string, '\0', maxlen);
32*946379e7Schristos if (end != NULL)
33*946379e7Schristos return end - string + 1;
34*946379e7Schristos else
35*946379e7Schristos return maxlen;
36*946379e7Schristos }
37