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heartbeat/replace/strnlen.c

32 lines
1.0 KiB

#include <lha_internal.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));
}