1  /* Recognize multibyte character.
       2     Copyright (C) 1999-2000, 2008-2022 Free Software Foundation, Inc.
       3     Written by Bruno Haible <bruno@clisp.org>, 2008.
       4  
       5     This file is free software: you can redistribute it and/or modify
       6     it under the terms of the GNU Lesser General Public License as
       7     published by the Free Software Foundation, either version 3 of the
       8     License, or (at your option) any later version.
       9  
      10     This file is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      13     GNU Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public License
      16     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <config.h>
      19  
      20  /* Specification.  */
      21  #include <wchar.h>
      22  
      23  
      24  static mbstate_t internal_state;
      25  
      26  size_t
      27  mbrlen (const char *s, size_t n, mbstate_t *ps)
      28  {
      29    if (ps == NULL)
      30      ps = &internal_state;
      31    return mbrtowc (NULL, s, n, ps);
      32  }