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/* Copyright (C) 1998-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
The GNU C 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.
The GNU C 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 the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <wchar.h>
#ifdef WCSNLEN
# define __wcsnlen WCSNLEN
#endif
/* Return length of string S at most maxlen. */
size_t
__wcsnlen (const wchar_t *s, size_t maxlen)
{
size_t len = 0;
while (maxlen > 0 && s[len] != L'\0')
{
++len;
if (--maxlen == 0 || s[len] == L'\0')
return len;
++len;
if (--maxlen == 0 || s[len] == L'\0')
return len;
++len;
if (--maxlen == 0 || s[len] == L'\0')
return len;
++len;
--maxlen;
}
return len;
}
#ifndef WCSNLEN
weak_alias (__wcsnlen, wcsnlen)
#endif
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