kc3-lang/gnulib/lib/btoc32.c

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• Hash : 9be236d6
  Author :
  Date : 2020-01-09T01:47:17
  

  mbrtoc32: Use the system's mbrtoc32 if it exists and basically works.
  
  * m4/mbrtoc32.m4 (gl_MBRTOC32_SANITYCHECK): New macro.
  (gl_FUNC_MBRTOC32): Require it. Set REPLACE_MBRTOC32 if mbrtoc32 exists
  but is not working.
  * lib/mbrtoc32.c: Include hard-locale.h, <locale.h>.
  (mbrtoc32): If the char32_t encoding and the wchar_t encoding may
  differ, use the system's mbrtoc32, adding workarounds.
  * modules/mbrtoc32 (Depends-on): Add hard-locale.
  * doc/posix-functions/mbrtoc32.texi: Mention the Solaris and native
  Windows problem.
  * lib/btoc32.c: Include <stdio.h>, <string.h>.
  (btoc32): If the char32_t encoding and the wchar_t encoding may differ,
  use mbrtoc32, not btowc.
  * modules/btoc32 (Depends-on): Add mbrtoc32.
  * lib/mbsrtoc32s.c (mbsrtoc32s): If the char32_t encoding and the
  wchar_t encoding may differ, use mbrtoc32, not mbsrtowcs.
  * modules/mbsrtoc32s (Depends-on): Update conditions.
  (configure.ac): Compile mbsrtoc32s-state.c unconditionally.
  * lib/mbsnrtoc32s.c (mbsnrtoc32s): If the char32_t encoding and the
  wchar_t encoding may differ, use mbrtoc32, not mbsnrtowcs.
  * modules/mbsnrtoc32s (Depends-on): Update conditions.
  (configure.ac): Compile mbsrtoc32s-state.c unconditionally.
  

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• lib/btoc32.c

• /* Convert unibyte character to 32-bit wide character.
     Copyright (C) 2020 Free Software Foundation, Inc.
  
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 3 of the License, or
     (at your option) any later version.
  
     This program 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 General Public License for more details.
  
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  
  /* Written by Bruno Haible <bruno@clisp.org>, 2020.  */
  
  #include <config.h>
  
  /* Specification.  */
  #include <uchar.h>
  
  #include <stdio.h>
  #include <string.h>
  
  wint_t
  btoc32 (int c)
  {
  #if HAVE_WORKING_MBRTOC32 && !defined __GLIBC__
    /* The char32_t encoding of a multibyte character may be different than its
       wchar_t encoding.  */
    if (c != EOF)
      {
        mbstate_t state;
        char s[1];
        char32_t wc;
  
        memset (&state, '\0', sizeof (mbstate_t));
        s[0] = (unsigned char) c;
        if (mbrtoc32 (&wc, s, 1, &state) <= 1)
          return wc;
      }
    return WEOF;
  #else
    /* In all known locale encodings, unibyte characters correspond only to
       characters in the BMP.  */
    return btowc (c);
  #endif
  }
  

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