i18npool/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>  // for getenv()
  21 #include <stdio.h>
  22
  23 #ifdef MACOSX
  24 #include <osl/process.h>
  25 #include <rtl/locale.h>
  26 #include <rtl/ustring.hxx>
  27
  28 #else   // MACOSX
  29 #include <rtl/string.hxx>
  30
  31 #endif  // MACOSX
  32 #include <rtl/instance.hxx>
  33 #include "i18npool/languagetag.hxx"
  34 #include "i18npool/mslangid.hxx"
  35
  36 // =======================================================================
  37
  38 static LanguageType nImplSystemLanguage = LANGUAGE_DONTKNOW;
  39 static LanguageType nImplSystemUILanguage = LANGUAGE_DONTKNOW;
  40
  41 // -----------------------------------------------------------------------
  42
  43 // Get locale of category LC_CTYPE of environment variables
  44 static const sal_Char* getLangFromEnvironment()
  45 {
  46     static const sal_Char* pFallback = "C";
  47     const sal_Char *pLang = NULL;
  48
  49     pLang = getenv ( "LC_ALL" );
  50     if (! pLang || pLang[0] == 0)
  51         pLang = getenv ( "LC_CTYPE" );
  52     if (! pLang || pLang[0] == 0)
  53         pLang = getenv( "LANG" );
  54     if (! pLang || pLang[0] == 0)
  55         pLang = pFallback;
  56
  57     return pLang;
  58 }
  59
  60 // -----------------------------------------------------------------------
  61
  62 // Get locale of category LC_MESSAGES of environment variables
  63 static const sal_Char* getUILangFromEnvironment()
  64 {
  65     static const sal_Char* pFallback = "C";
  66     const sal_Char *pLang = NULL;
  67
  68     pLang = getenv ( "LANGUAGE" );      // respect the GNU extension
  69     if (! pLang || pLang[0] == 0)
  70         pLang = getenv ( "LC_ALL" );
  71     if (! pLang || pLang[0] == 0)
  72         pLang = getenv ( "LC_MESSAGES" );
  73     if (! pLang || pLang[0] == 0)
  74         pLang = getenv( "LANG" );
  75     if (! pLang || pLang[0] == 0)
  76         pLang = pFallback;
  77
  78     return pLang;
  79 }
  80
  81 // -----------------------------------------------------------------------
  82
  83 typedef const sal_Char * (*getLangFromEnv)();
  84
  85 static void getPlatformSystemLanguageImpl( LanguageType& rSystemLanguage,
  86         getLangFromEnv pGetLangFromEnv )
  87 {
  88     /* get the language from the user environment */
  89     LanguageType nLang = rSystemLanguage;
  90     if ( nLang == LANGUAGE_DONTKNOW )
  91     {
  92         ::osl::MutexGuard aGuard( ::osl::Mutex::getGlobalMutex());
  93         nLang = rSystemLanguage;
  94         if ( nLang == LANGUAGE_DONTKNOW )
  95         {
  96 #ifdef MACOSX
  97             rtl_Locale    *procLocale;
  98             (void) pGetLangFromEnv; /* unused */
  99
 100             if ( osl_getProcessLocale(&procLocale) == osl_Process_E_None )
 101             {
 102                 rtl::OUString     rLang( procLocale->Language );
 103                 rtl::OUString     rCountry( procLocale->Country );
 104
 105                 nLang = LanguageTag( rLang, rCountry ).getLanguageType();
 106                 OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
 107                 rSystemLanguage = nLang;
 108 #ifdef DEBUG
 109                 if ( rSystemLanguage == LANGUAGE_DONTKNOW )
 110                     fprintf( stderr, "intnunx.cxx:  failed to convert osl_getProcessLocale() language to system language.\n" );
 111 #endif
 112             }
 113 #else   /* MACOSX */
 114             rtl::OString aUnxLang( (pGetLangFromEnv)() );
 115             nLang = MsLangId::convertUnxByteStringToLanguage( aUnxLang );
 116             OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
 117             rSystemLanguage = nLang;
 118 #endif  /* MACOSX */
 119         }
 120         else {
 121             OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
 122         }
 123     }
 124 }
 125
 126 // -----------------------------------------------------------------------
 127
 128 LanguageType MsLangId::getPlatformSystemLanguage()
 129 {
 130     getPlatformSystemLanguageImpl( nImplSystemLanguage, &getLangFromEnvironment);
 131     return nImplSystemLanguage;
 132 }
 133
 134 // -----------------------------------------------------------------------
 135
 136 LanguageType MsLangId::getPlatformSystemUILanguage()
 137 {
 138     getPlatformSystemLanguageImpl( nImplSystemUILanguage, &getUILangFromEnvironment);
 139     return nImplSystemUILanguage;
 140 }
 141
 142 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */