/* Copyright (C) 1996-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1996.

   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 "wcwidth.h"

/* Determine number of column positions required for first N wide

   characters (or fewer if S ends before this) in S.  */

int

wcswidth (const wchar_t *s, size_t n)

{

  int result = 0;

  while (n-- > 0 && *s != L'\0')

    {

      int now = internal_wcwidth (*s);

      if (now == -1)

	return -1;

      result += now;

      ++s;

    }

  return result;

}