glibc/wcsmbs/wcslen.c

/* Copyright (C) 1995, 1996, 1997, 1998, 2011  Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.

   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, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#include <wchar.h>

/* Return length of string S.  */
#ifndef WCSLEN
# define WCSLEN __wcslen
#endif

size_t
WCSLEN (s)
     const wchar_t *s;
{
  size_t len = 0;

  while (s[len] != L'\0')
    {
      if (s[++len] == L'\0')
	return len;
      if (s[++len] == L'\0')
	return len;
      if (s[++len] == L'\0')
	return len;
      ++len;
    }

  return len;
}
#ifndef WCSLEN
weak_alias (__wcslen, wcslen)
#endif