Blame lib/mbtowc-impl.h

Packit Service fdd496
/* Convert multibyte character to wide character.
Packit Service fdd496
   Copyright (C) 2011-2017 Free Software Foundation, Inc.
Packit Service fdd496
   Written by Bruno Haible <bruno@clisp.org>, 2011.
Packit Service fdd496
Packit Service fdd496
   This program is free software: you can redistribute it and/or modify
Packit Service fdd496
   it under the terms of the GNU General Public License as published by
Packit Service fdd496
   the Free Software Foundation; either version 3 of the License, or
Packit Service fdd496
   (at your option) any later version.
Packit Service fdd496
Packit Service fdd496
   This program is distributed in the hope that it will be useful,
Packit Service fdd496
   but WITHOUT ANY WARRANTY; without even the implied warranty of
Packit Service fdd496
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Packit Service fdd496
   GNU General Public License for more details.
Packit Service fdd496
Packit Service fdd496
   You should have received a copy of the GNU General Public License
Packit Service fdd496
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
Packit Service fdd496
Packit Service fdd496
/* We don't need a static internal state, because the encoding is not state
Packit Service fdd496
   dependent, and when mbrtowc returns (size_t)(-2). we throw the result
Packit Service fdd496
   away. */
Packit Service fdd496
Packit Service fdd496
int
Packit Service fdd496
mbtowc (wchar_t *pwc, const char *s, size_t n)
Packit Service fdd496
{
Packit Service fdd496
  if (s == NULL)
Packit Service fdd496
    return 0;
Packit Service fdd496
  else
Packit Service fdd496
    {
Packit Service fdd496
      mbstate_t state;
Packit Service fdd496
      wchar_t wc;
Packit Service fdd496
      size_t result;
Packit Service fdd496
Packit Service fdd496
      memset (&state, 0, sizeof (mbstate_t));
Packit Service fdd496
      result = mbrtowc (&wc, s, n, &state);
Packit Service fdd496
      if (result == (size_t)-1 || result == (size_t)-2)
Packit Service fdd496
        {
Packit Service fdd496
          errno = EILSEQ;
Packit Service fdd496
          return -1;
Packit Service fdd496
        }
Packit Service fdd496
      if (pwc != NULL)
Packit Service fdd496
        *pwc = wc;
Packit Service fdd496
      return (wc == 0 ? 0 : result);
Packit Service fdd496
    }
Packit Service fdd496
}