/* Copyright (C) 1995-2018 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, see

   <http://www.gnu.org/licenses/>.  */

#include <wchar.h>

#ifdef WCSSPN

# define wcsspn WCSSPN

#endif

/* Return the length of the maximum initial segment

   of WCS which contains only wide-characters in ACCEPT.  */

size_t

wcsspn (const wchar_t *wcs, const wchar_t *accept)

{

  const wchar_t *p;

  const wchar_t *a;

  size_t count = 0;

  for (p = wcs; *p != L'\0'; ++p)

    {

      for (a = accept; *a != L'\0'; ++a)

	if (*p == *a)

	  break;

      if (*a == L'\0')

	return count;

      else

	++count;

    }

  return count;

}

libc_hidden_def (wcsspn)