kc3-lang/gnulib/lib/setlocale_null-unlocked.c

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• Hash : 7b089321
  Author :
  Date : 2025-01-01T09:24:36
  

  maint: run 'make update-copyright'
  

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• lib/setlocale_null-unlocked.c

• /* Query the name of the current global locale, without locking.
     Copyright (C) 2019-2025 Free Software Foundation, Inc.
  
     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/>.  */
  
  /* Written by Bruno Haible <bruno@clisp.org>, 2019.  */
  
  #include <config.h>
  
  /* Specification.  */
  #include "setlocale_null.h"
  
  #include <errno.h>
  #include <locale.h>
  #include <string.h>
  #if defined _WIN32 && !defined __CYGWIN__
  # include <wchar.h>
  #endif
  
  /* Use the system's setlocale() function, not the gnulib override, here.  */
  #undef setlocale
  
  const char *
  setlocale_null_unlocked (int category)
  {
    const char *result = setlocale (category, NULL);
  
  #ifdef __ANDROID__
    if (result == NULL)
      switch (category)
        {
        case LC_CTYPE:
        case LC_NUMERIC:
        case LC_TIME:
        case LC_COLLATE:
        case LC_MONETARY:
        case LC_MESSAGES:
        case LC_ALL:
        case LC_PAPER:
        case LC_NAME:
        case LC_ADDRESS:
        case LC_TELEPHONE:
        case LC_MEASUREMENT:
          result = "C";
          break;
        default:
          break;
        }
  #endif
  
    return result;
  }
  
  int
  setlocale_null_r_unlocked (int category, char *buf, size_t bufsize)
  {
  #if defined _WIN32 && !defined __CYGWIN__ && defined _MSC_VER
    /* On native Windows, nowadays, the setlocale() implementation is based
       on _wsetlocale() and uses malloc() for the result.  We are better off
       using _wsetlocale() directly.  */
    const wchar_t *result = _wsetlocale (category, NULL);
  
    if (result == NULL)
      {
        /* CATEGORY is invalid.  */
        if (bufsize > 0)
          /* Return an empty string in BUF.
             This is a convenience for callers that don't want to write explicit
             code for handling EINVAL.  */
          buf[0] = '\0';
        return EINVAL;
      }
    else
      {
        size_t length = wcslen (result);
        if (length < bufsize)
          {
            size_t i;
  
            /* Convert wchar_t[] -> char[], assuming plain ASCII.  */
            for (i = 0; i <= length; i++)
              buf[i] = result[i];
  
            return 0;
          }
        else
          {
            if (bufsize > 0)
              {
                /* Return a truncated result in BUF.
                   This is a convenience for callers that don't want to write
                   explicit code for handling ERANGE.  */
                size_t i;
  
                /* Convert wchar_t[] -> char[], assuming plain ASCII.  */
                for (i = 0; i < bufsize; i++)
                  buf[i] = result[i];
                buf[bufsize - 1] = '\0';
              }
            return ERANGE;
          }
      }
  #else
    const char *result = setlocale_null_unlocked (category);
  
    if (result == NULL)
      {
        /* CATEGORY is invalid.  */
        if (bufsize > 0)
          /* Return an empty string in BUF.
             This is a convenience for callers that don't want to write explicit
             code for handling EINVAL.  */
          buf[0] = '\0';
        return EINVAL;
      }
    else
      {
        size_t length = strlen (result);
        if (length < bufsize)
          {
            memcpy (buf, result, length + 1);
            return 0;
          }
        else
          {
            if (bufsize > 0)
              {
                /* Return a truncated result in BUF.
                   This is a convenience for callers that don't want to write
                   explicit code for handling ERANGE.  */
                memcpy (buf, result, bufsize - 1);
                buf[bufsize - 1] = '\0';
              }
            return ERANGE;
          }
      }
  #endif
  }
  

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