1  /* Convert string to 32-bit wide string.
       2     Copyright (C) 2020-2023 Free Software Foundation, Inc.
       3     Written by Bruno Haible <bruno@clisp.org>, 2020.
       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 2.1 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  #define IN_MBSRTOC32S
      21  /* Specification.  */
      22  #include <uchar.h>
      23  
      24  #include <wchar.h>
      25  
      26  #if (HAVE_WORKING_MBRTOC32 && !_GL_WCHAR_T_IS_UCS4) || (GL_CHAR32_T_IS_UNICODE && GL_CHAR32_T_VS_WCHAR_T_NEEDS_CONVERSION) || _GL_SMALL_WCHAR_T
      27  /* The char32_t encoding of a multibyte character may be different than its
      28     wchar_t encoding, or char32_t is wider than wchar_t.  */
      29  
      30  # include <errno.h>
      31  # include <limits.h>
      32  # include <stdlib.h>
      33  
      34  # include "strnlen1.h"
      35  
      36  extern mbstate_t _gl_mbsrtoc32s_state;
      37  
      38  # define FUNC mbsrtoc32s
      39  # define DCHAR_T char32_t
      40  # define INTERNAL_STATE _gl_mbsrtoc32s_state
      41  # define MBRTOWC mbrtoc32
      42  # if GNULIB_MBRTOC32_REGULAR
      43     /* If the 'mbrtoc32-regular' module is in use, we don't need to handle
      44        a (size_t)(-3) return value from mbrtoc32.  */
      45  #  define USES_C32 0
      46  # else
      47  #  define USES_C32 1
      48  # endif
      49  # include "mbsrtowcs-impl.h"
      50  
      51  #else
      52  /* char32_t and wchar_t are equivalent.  */
      53  
      54  static_assert (sizeof (char32_t) == sizeof (wchar_t));
      55  
      56  # if _GL_WCHAR_T_IS_UCS4
      57  _GL_EXTERN_INLINE
      58  # endif
      59  size_t
      60  mbsrtoc32s (char32_t *dest, const char **srcp, size_t len, mbstate_t *ps)
      61  {
      62    return mbsrtowcs ((wchar_t *) dest, srcp, len, ps);
      63  }
      64  
      65  #endif