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1479465f GJ |
1 | /* Find the length of STRING, but scan at most MAXLEN characters. |
2 | Copyright (C) 2005, 2006 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 2, 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, write to the Free Software Foundation, | |
17 | Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ | |
18 | ||
19 | #ifdef HAVE_CONFIG_H | |
20 | # include <config.h> | |
21 | #endif | |
22 | ||
23 | #include "compat.h" | |
24 | ||
25 | /* Find the length of STRING, but scan at most MAXLEN characters. | |
26 | If no '\0' terminator is found in that many characters, return MAXLEN. */ | |
27 | ||
28 | size_t | |
29 | strnlen (const char *string, size_t maxlen) | |
30 | { | |
31 | const char *end = memchr (string, '\0', maxlen); | |
32 | return end ? (size_t) (end - string) : maxlen; | |
33 | } |