i18nlangtag/source/isolang/inunx.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <stdlib.h>
  21
  22 #ifdef MACOSX
  23 #include <osl/process.h>
  24 #include <rtl/locale.h>
  25 #include <rtl/ustring.hxx>
  26 #include <i18nlangtag/languagetag.hxx>
  27
  28 #else   // MACOSX
  29 #include <rtl/string.hxx>
  30 #endif  // MACOSX
  31
  32 #include <osl/mutex.hxx>
  33 #include <osl/doublecheckedlocking.h>
  34 #include <i18nlangtag/mslangid.hxx>
  35
  36
  37 static LanguageType nImplSystemLanguage = LANGUAGE_DONTKNOW;
  38 static LanguageType nImplSystemUILanguage = LANGUAGE_DONTKNOW;
  39
  40
  41 // Get locale of category LC_CTYPE of environment variables
  42 static const sal_Char* getLangFromEnvironment()
  43 {
  44     static const sal_Char* const pFallback = "C";
  45     const sal_Char *pLang = nullptr;
  46
  47     pLang = getenv ( "LC_ALL" );
  48     if (! pLang || pLang[0] == 0)
  49         pLang = getenv ( "LC_CTYPE" );
  50     if (! pLang || pLang[0] == 0)
  51         pLang = getenv( "LANG" );
  52     if (! pLang || pLang[0] == 0)
  53         pLang = pFallback;
  54
  55     return pLang;
  56 }
  57
  58
  59 // Get locale of category LC_MESSAGES of environment variables
  60 static const sal_Char* getUILangFromEnvironment()
  61 {
  62     static const sal_Char* const pFallback = "C";
  63     const sal_Char *pLang = nullptr;
  64
  65     pLang = getenv ( "LANGUAGE" );      // respect the GNU extension
  66     if (! pLang || pLang[0] == 0)
  67         pLang = getenv ( "LC_ALL" );
  68     if (! pLang || pLang[0] == 0)
  69         pLang = getenv ( "LC_MESSAGES" );
  70     if (! pLang || pLang[0] == 0)
  71         pLang = getenv( "LANG" );
  72     if (! pLang || pLang[0] == 0)
  73         pLang = pFallback;
  74
  75     return pLang;
  76 }
  77
  78
  79 typedef const sal_Char * (*getLangFromEnv)();
  80
  81 static void getPlatformSystemLanguageImpl( LanguageType& rSystemLanguage,
  82         getLangFromEnv pGetLangFromEnv )
  83 {
  84     /* get the language from the user environment */
  85     LanguageType nLang = rSystemLanguage;
  86     if ( nLang == LANGUAGE_DONTKNOW )
  87     {
  88         ::osl::MutexGuard aGuard( ::osl::Mutex::getGlobalMutex());
  89         nLang = rSystemLanguage;
  90         if ( nLang == LANGUAGE_DONTKNOW )
  91         {
  92 #ifdef MACOSX
  93             rtl_Locale    *procLocale;
  94             (void) pGetLangFromEnv; /* unused */
  95
  96             if ( osl_getProcessLocale(&procLocale) == osl_Process_E_None )
  97             {
  98                 nLang = LanguageTag( *procLocale ).makeFallback().getLanguageType();
  99                 OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
 100                 rSystemLanguage = nLang;
 101 #ifdef DEBUG
 102                 if ( rSystemLanguage == LANGUAGE_DONTKNOW )
 103                     fprintf( stderr, "intnunx.cxx:  failed to convert osl_getProcessLocale() language to system language.\n" );
 104 #endif
 105             }
 106 #else   /* MACOSX */
 107             OString aUnxLang( pGetLangFromEnv() );
 108             nLang = MsLangId::convertUnxByteStringToLanguage( aUnxLang );
 109             OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
 110             rSystemLanguage = nLang;
 111 #endif  /* MACOSX */
 112         }
 113         else {
 114             OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
 115         }
 116     }
 117 }
 118
 119
 120 LanguageType MsLangId::getPlatformSystemLanguage()
 121 {
 122     getPlatformSystemLanguageImpl( nImplSystemLanguage, &getLangFromEnvironment);
 123     return nImplSystemLanguage;
 124 }
 125
 126
 127 LanguageType MsLangId::getPlatformSystemUILanguage()
 128 {
 129     getPlatformSystemLanguageImpl( nImplSystemUILanguage, &getUILangFromEnvironment);
 130     return nImplSystemUILanguage;
 131 }
 132
 133 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */