i18nlangtag/source/languagetag/languagetagicu.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
  10 #include <i18nlangtag/languagetagicu.hxx>
  11 #include <i18nlangtag/languagetag.hxx>
  12
  13
  14 // static
  15 icu::Locale LanguageTagIcu::getIcuLocale( const LanguageTag & rLanguageTag )
  16 {
  17     if (rLanguageTag.isIsoLocale())
  18     {
  19         // The simple case.
  20         const css::lang::Locale& rLocale = rLanguageTag.getLocale();
  21         if (rLocale.Country.isEmpty())
  22             return icu::Locale( OUStringToOString( rLocale.Language, RTL_TEXTENCODING_ASCII_US).getStr());
  23         return icu::Locale(
  24                 OUStringToOString( rLocale.Language, RTL_TEXTENCODING_ASCII_US).getStr(),
  25                 OUStringToOString( rLocale.Country, RTL_TEXTENCODING_ASCII_US).getStr());
  26     }
  27
  28     /* TODO: could we optimize this for the isIsoODF() case where only a script
  29      * is added? */
  30
  31     // Let ICU decide how it wants a BCP47 string stuffed into its Locale.
  32     return icu::Locale::createFromName(
  33             OUStringToOString( rLanguageTag.getBcp47(), RTL_TEXTENCODING_ASCII_US).getStr());
  34 }
  35
  36
  37 // static
  38 icu::Locale LanguageTagIcu::getIcuLocale( const LanguageTag & rLanguageTag, std::u16string_view rVariant, std::u16string_view rKeywords )
  39 {
  40     /* FIXME: how should this work with any BCP47? */
  41     return icu::Locale(
  42             OUStringToOString( rLanguageTag.getLanguage(), RTL_TEXTENCODING_ASCII_US).getStr(),
  43             OUStringToOString( rLanguageTag.getCountry(), RTL_TEXTENCODING_ASCII_US).getStr(),
  44             OUStringToOString( rVariant, RTL_TEXTENCODING_ASCII_US).getStr(),
  45             OUStringToOString( rKeywords, RTL_TEXTENCODING_ASCII_US).getStr()
  46            );
  47 }
  48
  49 // static
  50 OUString LanguageTagIcu::getDisplayName( const LanguageTag & rLanguageTag, const LanguageTag & rDisplayLanguage )
  51 {
  52     // This will be initialized by the first call; as the UI language doesn't
  53     // change the tag mostly stays the same, unless someone overrides it for a
  54     // call here, and thus obtaining the UI icu::Locale has to be done only
  55     // once.
  56     static thread_local LanguageTag aUITag( LANGUAGE_SYSTEM);
  57     static thread_local icu::Locale aUILocale;
  58
  59     if (aUITag != rDisplayLanguage)
  60     {
  61         aUITag = rDisplayLanguage;
  62         aUILocale = getIcuLocale( rDisplayLanguage);
  63     }
  64
  65     icu::Locale aLocale( getIcuLocale( rLanguageTag));
  66     icu::UnicodeString aResult;
  67     aLocale.getDisplayName( aUILocale, aResult);
  68     return OUString( reinterpret_cast<const sal_Unicode*>(aResult.getBuffer()), aResult.length());
  69 }
  70
  71 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */