00001 /* Find the length of STRING + 1, but scan at most MAXLEN bytes. 00002 Copyright (C) 2005 Free Software Foundation, Inc. 00003 00004 This program is free software; you can redistribute it and/or modify it 00005 under the terms of the GNU Library General Public License as published 00006 by the Free Software Foundation; either version 2.1, or (at your option) 00007 any later version. 00008 00009 This program is distributed in the hope that it will be useful, 00010 but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00012 Library General Public License for more details. 00013 00014 You should have received a copy of the GNU Library General Public 00015 License along with this program; if not, write to the Free Software 00016 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 00017 USA. */ 00018 00019 #ifdef HAVE_CONFIG_H 00020 # include <config.h> 00021 #endif 00022 00023 /* Specification. */ 00024 #include "strnlen1.h" 00025 00026 #include <string.h> 00027 00028 /* Find the length of STRING + 1, but scan at most MAXLEN bytes. 00029 If no '\0' terminator is found in that many characters, return MAXLEN. */ 00030 /* This is the same as strnlen (string, maxlen - 1) + 1. */ 00031 size_t 00032 strnlen1 (const char *string, size_t maxlen) 00033 { 00034 const char *end = memchr (string, '\0', maxlen); 00035 if (end != NULL) 00036 return end - string + 1; 00037 else 00038 return maxlen; 00039 }