kc3-lang/gnulib/lib/wcrtomb.c

• Show log

  Commit

• Hash : 32a72f45
  Author :
  Date : 2023-01-01T01:14:21
  

  maint: run 'make update-copyright'
  

Download

• lib/wcrtomb.c

• /* Convert wide character to multibyte character.
     Copyright (C) 2008-2023 Free Software Foundation, Inc.
     Written by Bruno Haible <bruno@clisp.org>, 2008.
  
     This file is free software: you can redistribute it and/or modify
     it under the terms of the GNU Lesser General Public License as
     published by the Free Software Foundation; either version 2.1 of the
     License, or (at your option) any later version.
  
     This file is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU Lesser General Public License for more details.
  
     You should have received a copy of the GNU Lesser General Public License
     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  
  #include <config.h>
  
  /* Specification.  */
  #include <wchar.h>
  
  #include <errno.h>
  #include <stdlib.h>
  
  
  size_t
  wcrtomb (char *s, wchar_t wc, mbstate_t *ps)
  #undef wcrtomb
  {
    /* This implementation of wcrtomb supports only stateless encodings.
       ps must be in the initial state.  */
    if (ps != NULL && !mbsinit (ps))
      {
        errno = EINVAL;
        return (size_t)(-1);
      }
  
  #if !HAVE_WCRTOMB                       /* IRIX 6.5 */ \
      || WCRTOMB_RETVAL_BUG               /* Solaris 11.3, MSVC */ \
      || WCRTOMB_C_LOCALE_BUG             /* Android */
    if (s == NULL)
      /* We know the NUL wide character corresponds to the NUL character.  */
      return 1;
    else
  #endif
      {
  #if HAVE_WCRTOMB
  # if WCRTOMB_C_LOCALE_BUG               /* Android */
        /* Implement consistently with mbrtowc(): through a 1:1 correspondence,
           as in ISO-8859-1.  */
        if (wc >= 0 && wc <= 0xff)
          {
            *s = (unsigned char) wc;
            return 1;
          }
        else
          {
            errno = EILSEQ;
            return (size_t)(-1);
          }
  # else
        return wcrtomb (s, wc, ps);
  # endif
  #else                                   /* IRIX 6.5 */
        /* Fallback for platforms that don't have wcrtomb().
           Implement on top of wctomb().
           This code is not multithread-safe.  */
        int ret = wctomb (s, wc);
  
        if (ret >= 0)
          return ret;
        else
          {
            errno = EILSEQ;
            return (size_t)(-1);
          }
  #endif
      }
  }
  

Download