The Android Open Source Project | cea198a | 2009-03-03 19:29:17 -0800 | [diff] [blame] | 1 | /* Find the length of STRING, but scan at most MAXLEN characters. |
Ying Wang | 0543663 | 2013-04-05 16:01:00 -0700 | [diff] [blame] | 2 | Copyright (C) 2005-2007, 2009-2012 Free Software Foundation, Inc. |
The Android Open Source Project | cea198a | 2009-03-03 19:29:17 -0800 | [diff] [blame] | 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 |
Ying Wang | 0543663 | 2013-04-05 16:01:00 -0700 | [diff] [blame] | 7 | the Free Software Foundation; either version 3, or (at your option) |
The Android Open Source Project | cea198a | 2009-03-03 19:29:17 -0800 | [diff] [blame] | 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 |
Ying Wang | 0543663 | 2013-04-05 16:01:00 -0700 | [diff] [blame] | 16 | along with this program; if not, see <http://www.gnu.org/licenses/>. */ |
The Android Open Source Project | cea198a | 2009-03-03 19:29:17 -0800 | [diff] [blame] | 17 | |
Ying Wang | 0543663 | 2013-04-05 16:01:00 -0700 | [diff] [blame] | 18 | #include <config.h> |
The Android Open Source Project | cea198a | 2009-03-03 19:29:17 -0800 | [diff] [blame] | 19 | |
Ying Wang | 0543663 | 2013-04-05 16:01:00 -0700 | [diff] [blame] | 20 | #include <string.h> |
The Android Open Source Project | cea198a | 2009-03-03 19:29:17 -0800 | [diff] [blame] | 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 | |
| 25 | size_t |
| 26 | strnlen (const char *string, size_t maxlen) |
| 27 | { |
| 28 | const char *end = memchr (string, '\0', maxlen); |
| 29 | return end ? (size_t) (end - string) : maxlen; |
| 30 | } |