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-rw-r--r--gl/strnlen.c30
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diff --git a/gl/strnlen.c b/gl/strnlen.c
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1/* Find the length of STRING, but scan at most MAXLEN characters.
2 Copyright (C) 2005-2007, 2009-2013 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 3, 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, see <http://www.gnu.org/licenses/>. */
17
18#include <config.h>
19
20#include <string.h>
21
22/* Find the length of STRING, but scan at most MAXLEN characters.
23 If no '\0' terminator is found in that many characters, return MAXLEN. */
24
25size_t
26strnlen (const char *string, size_t maxlen)
27{
28 const char *end = memchr (string, '\0', maxlen);
29 return end ? (size_t) (end - string) : maxlen;
30}