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 "strnlen.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 } 34
