u-tools/apps/tar/gnu/wcrtomb.c

   1 /* -*- buffer-read-only: t -*- vi: set ro: */
   2 /* DO NOT EDIT! GENERATED AUTOMATICALLY! */
   3 /* Convert wide character to multibyte character.
   4    Copyright (C) 2008-2011 Free Software Foundation, Inc.
   5    Written by Bruno Haible <bruno@clisp.org>, 2008.
   6
   7    This program is free software: you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #include <config.h>
  21
  22 /* Specification.  */
  23 #include <wchar.h>
  24
  25 #include <errno.h>
  26 #include <stdlib.h>
  27
  28
  29 size_t
  30 wcrtomb (char *s, wchar_t wc, mbstate_t *ps)
  31 {
  32   /* This implementation of wcrtomb on top of wctomb() supports only
  33      stateless encodings.  ps must be in the initial state.  */
  34   if (ps != NULL && !mbsinit (ps))
  35     {
  36       errno = EINVAL;
  37       return (size_t)(-1);
  38     }
  39
  40   if (s == NULL)
  41     /* We know the NUL wide character corresponds to the NUL character.  */
  42     return 1;
  43   else
  44     {
  45       int ret = wctomb (s, wc);
  46
  47       if (ret >= 0)
  48         return ret;
  49       else
  50         {
  51           errno = EILSEQ;
  52           return (size_t)(-1);
  53         }
  54     }
  55 }