1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
|
/* $Id: strnlen.c,v 1.2 2004/02/17 22:12:01 lars Exp $ */
#include <portability.h>
#include <string.h>
/*
* Copyright (C) 2003 Alan Robertson <alanr@unix.sh>
* This software licensed under the GNU LGPL.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
size_t
strnlen(const char *s, size_t maxlen)
{
const char * eospos;
eospos = memchr(s, (int)'\0', maxlen);
return (eospos == NULL ? maxlen : (size_t)(eospos-s));
}
|
