vcl/source/app/i18nhelp.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 <unotools/localedatawrapper.hxx>
  21 #include <unotools/transliterationwrapper.hxx>
  22
  23 #include <i18nlangtag/languagetag.hxx>
  24 #include <i18nutil/transliteration.hxx>
  25
  26 #include <rtl/ustrbuf.hxx>
  27
  28 #include <utility>
  29 #include <vcl/i18nhelp.hxx>
  30
  31 using namespace ::com::sun::star;
  32
  33 vcl::I18nHelper::I18nHelper(  const css::uno::Reference< css::uno::XComponentContext >& rxContext, LanguageTag aLanguageTag )
  34     :
  35         maLanguageTag(std::move( aLanguageTag))
  36 {
  37     m_xContext = rxContext;
  38     mpLocaleDataWrapper = nullptr;
  39     mpTransliterationWrapper= nullptr;
  40     mbTransliterateIgnoreCase = false;
  41 }
  42
  43 vcl::I18nHelper::~I18nHelper()
  44 {
  45     ImplDestroyWrappers();
  46 }
  47
  48 void vcl::I18nHelper::ImplDestroyWrappers()
  49 {
  50     mpLocaleDataWrapper.reset();
  51     mpTransliterationWrapper.reset();
  52 }
  53
  54 utl::TransliterationWrapper& vcl::I18nHelper::ImplGetTransliterationWrapper() const
  55 {
  56     if ( !mpTransliterationWrapper )
  57     {
  58         TransliterationFlags nModules = TransliterationFlags::IGNORE_WIDTH;
  59         if ( mbTransliterateIgnoreCase )
  60             nModules |= TransliterationFlags::IGNORE_CASE;
  61
  62         const_cast<vcl::I18nHelper*>(this)->mpTransliterationWrapper.reset(new utl::TransliterationWrapper( m_xContext, nModules ));
  63         const_cast<vcl::I18nHelper*>(this)->mpTransliterationWrapper->loadModuleIfNeeded( maLanguageTag.getLanguageType() );
  64     }
  65     return *mpTransliterationWrapper;
  66 }
  67
  68 LocaleDataWrapper& vcl::I18nHelper::ImplGetLocaleDataWrapper() const
  69 {
  70     if ( !mpLocaleDataWrapper )
  71     {
  72         const_cast<vcl::I18nHelper*>(this)->mpLocaleDataWrapper.reset(new LocaleDataWrapper( m_xContext, maLanguageTag ));
  73     }
  74     return *mpLocaleDataWrapper;
  75 }
  76
  77 static bool is_formatting_mark( sal_Unicode c )
  78 {
  79     if( (c >= 0x200B) && (c <= 0x200F) )    // BiDi and zero-width-markers
  80         return true;
  81     if( (c >= 0x2028) && (c <= 0x202E) )    // BiDi and paragraph-markers
  82         return true;
  83     return false;
  84 }
  85
  86 /* #i100057# filter formatting marks out of strings before passing them to
  87    the transliteration. The real solution would have been an additional TransliterationModule
  88    to ignore these marks during transliteration; however changing the code in i18npool that actually
  89    implements this could produce unwanted side effects.
  90
  91    Of course this copying around is not really good, but looking at i18npool, one more time
  92    will not hurt.
  93 */
  94 OUString vcl::I18nHelper::filterFormattingChars( const OUString& rStr )
  95 {
  96     sal_Int32 nLength = rStr.getLength();
  97     OUStringBuffer aBuf( nLength );
  98     const sal_Unicode* pStr = rStr.getStr();
  99     while( nLength-- )
 100     {
 101         if( ! is_formatting_mark( *pStr ) )
 102             aBuf.append( *pStr );
 103         pStr++;
 104     }
 105     return aBuf.makeStringAndClear();
 106 }
 107
 108 sal_Int32 vcl::I18nHelper::CompareString( const OUString& rStr1, const OUString& rStr2 ) const
 109 {
 110     std::unique_lock aGuard( maMutex );
 111
 112     if ( mbTransliterateIgnoreCase )
 113     {
 114         // Change mbTransliterateIgnoreCase and destroy the wrapper, next call to
 115         // ImplGetTransliterationWrapper() will create a wrapper with the correct bIgnoreCase
 116         const_cast<vcl::I18nHelper*>(this)->mbTransliterateIgnoreCase = false;
 117         const_cast<vcl::I18nHelper*>(this)->mpTransliterationWrapper.reset();
 118     }
 119
 120     OUString aStr1( filterFormattingChars(rStr1) );
 121     OUString aStr2( filterFormattingChars(rStr2) );
 122     return ImplGetTransliterationWrapper().compareString( aStr1, aStr2 );
 123 }
 124
 125 bool vcl::I18nHelper::MatchString( const OUString& rStr1, const OUString& rStr2 ) const
 126 {
 127     std::unique_lock aGuard( maMutex );
 128
 129     if ( !mbTransliterateIgnoreCase )
 130     {
 131         // Change mbTransliterateIgnoreCase and destroy the wrapper, next call to
 132         // ImplGetTransliterationWrapper() will create a wrapper with the correct bIgnoreCase
 133         const_cast<vcl::I18nHelper*>(this)->mbTransliterateIgnoreCase = true;
 134         const_cast<vcl::I18nHelper*>(this)->mpTransliterationWrapper.reset();
 135     }
 136
 137     OUString aStr1( filterFormattingChars(rStr1) );
 138     OUString aStr2( filterFormattingChars(rStr2) );
 139     return ImplGetTransliterationWrapper().isMatch( aStr1, aStr2 );
 140 }
 141
 142 bool vcl::I18nHelper::MatchMnemonic( std::u16string_view rString, sal_Unicode cMnemonicChar ) const
 143 {
 144     size_t n = rString.find( '~' );
 145     if ( n == std::u16string_view::npos )
 146         return false;
 147     OUString aMatchStr( rString.substr( n+1 ) );   // not only one char, because of transliteration...
 148     return MatchString( OUString(cMnemonicChar), aMatchStr );
 149 }
 150
 151 OUString vcl::I18nHelper::GetNum( tools::Long nNumber, sal_uInt16 nDecimals, bool bUseThousandSep, bool bTrailingZeros ) const
 152 {
 153     return ImplGetLocaleDataWrapper().getNum( nNumber, nDecimals, bUseThousandSep, bTrailingZeros );
 154 }
 155
 156 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */