1  /* Convert wide character to unibyte character.
       2     Copyright (C) 2008, 2010-2022 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  #include <stdio.h>
      24  #include <stdlib.h>
      25  
      26  int
      27  wctob (wint_t wc)
      28  {
      29    char buf[64];
      30  
      31    if (!(MB_CUR_MAX <= sizeof (buf)))
      32      abort ();
      33    /* Handle the case where WEOF is a value that does not fit in a wchar_t.  */
      34    if (wc == (wchar_t)wc)
      35      if (wctomb (buf, (wchar_t)wc) == 1)
      36        return (unsigned char) buf[0];
      37    return EOF;
      38  }