lib/btowc.c

   1 /* Convert unibyte character to wide character.
   2    Copyright (C) 2008, 2010-2019 Free Software Foundation, Inc.
   3    Written by Bruno Haible <bruno@clisp.org>, 2008.
   4
   5    This program is free software: you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program 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 General Public License for more details.
  14
  15    You should have received a copy of the GNU 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 wint_t
  27 btowc (int c)
  28 {
  29   if (c != EOF)
  30     {
  31       char buf[1];
  32       wchar_t wc;
  33
  34       buf[0] = c;
  35       if (mbtowc (&wc, buf, 1) >= 0)
  36         return wc;
  37     }
  38   return WEOF;
  39 }