1 files changed, 155 insertions, 0 deletions
diff --git a/vcl/source/app/i18nhelp.cxx b/vcl/source/app/i18nhelp.cxx
new file mode 100644
index 000000000..1ed017b77
--- /dev/null
+++ b/vcl/source/app/i18nhelp.cxx
@@ -0,0 +1,155 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <unotools/localedatawrapper.hxx>
+#include <unotools/transliterationwrapper.hxx>
+
+#include <i18nlangtag/languagetag.hxx>
+#include <i18nutil/transliteration.hxx>
+
+#include <rtl/ustrbuf.hxx>
+
+#include <vcl/i18nhelp.hxx>
+
+using namespace ::com::sun::star;
+
+vcl::I18nHelper::I18nHelper(  const css::uno::Reference< css::uno::XComponentContext >& rxContext, const LanguageTag& rLanguageTag )
+    :
+        maLanguageTag( rLanguageTag)
+{
+    m_xContext = rxContext;
+    mpLocaleDataWrapper = nullptr;
+    mpTransliterationWrapper= nullptr;
+    mbTransliterateIgnoreCase = false;
+}
+
+vcl::I18nHelper::~I18nHelper()
+{
+    ImplDestroyWrappers();
+}
+
+void vcl::I18nHelper::ImplDestroyWrappers()
+{
+    mpLocaleDataWrapper.reset();
+    mpTransliterationWrapper.reset();
+}
+
+utl::TransliterationWrapper& vcl::I18nHelper::ImplGetTransliterationWrapper() const
+{
+    if ( !mpTransliterationWrapper )
+    {
+        TransliterationFlags nModules = TransliterationFlags::IGNORE_WIDTH;
+        if ( mbTransliterateIgnoreCase )
+            nModules |= TransliterationFlags::IGNORE_CASE;
+
+        const_cast<vcl::I18nHelper*>(this)->mpTransliterationWrapper.reset(new utl::TransliterationWrapper( m_xContext, nModules ));
+        const_cast<vcl::I18nHelper*>(this)->mpTransliterationWrapper->loadModuleIfNeeded( maLanguageTag.getLanguageType() );
+    }
+    return *mpTransliterationWrapper;
+}
+
+LocaleDataWrapper& vcl::I18nHelper::ImplGetLocaleDataWrapper() const
+{
+    if ( !mpLocaleDataWrapper )
+    {
+        const_cast<vcl::I18nHelper*>(this)->mpLocaleDataWrapper.reset(new LocaleDataWrapper( m_xContext, maLanguageTag ));
+    }
+    return *mpLocaleDataWrapper;
+}
+
+static bool is_formatting_mark( sal_Unicode c )
+{
+    if( (c >= 0x200B) && (c <= 0x200F) )    // BiDi and zero-width-markers
+        return true;
+    if( (c >= 0x2028) && (c <= 0x202E) )    // BiDi and paragraph-markers
+        return true;
+    return false;
+}
+
+/* #i100057# filter formatting marks out of strings before passing them to
+   the transliteration. The real solution would have been an additional TransliterationModule
+   to ignore these marks during transliteration; however changing the code in i18npool that actually
+   implements this could produce unwanted side effects.
+
+   Of course this copying around is not really good, but looking at i18npool, one more time
+   will not hurt.
+*/
+OUString vcl::I18nHelper::filterFormattingChars( const OUString& rStr )
+{
+    sal_Int32 nLength = rStr.getLength();
+    OUStringBuffer aBuf( nLength );
+    const sal_Unicode* pStr = rStr.getStr();
+    while( nLength-- )
+    {
+        if( ! is_formatting_mark( *pStr ) )
+            aBuf.append( *pStr );
+        pStr++;
+    }
+    return aBuf.makeStringAndClear();
+}
+
+sal_Int32 vcl::I18nHelper::CompareString( const OUString& rStr1, const OUString& rStr2 ) const
+{
+    std::unique_lock aGuard( maMutex );
+
+    if ( mbTransliterateIgnoreCase )
+    {
+        // Change mbTransliterateIgnoreCase and destroy the wrapper, next call to
+        // ImplGetTransliterationWrapper() will create a wrapper with the correct bIgnoreCase
+        const_cast<vcl::I18nHelper*>(this)->mbTransliterateIgnoreCase = false;
+        const_cast<vcl::I18nHelper*>(this)->mpTransliterationWrapper.reset();
+    }
+
+    OUString aStr1( filterFormattingChars(rStr1) );
+    OUString aStr2( filterFormattingChars(rStr2) );
+    return ImplGetTransliterationWrapper().compareString( aStr1, aStr2 );
+}
+
+bool vcl::I18nHelper::MatchString( const OUString& rStr1, const OUString& rStr2 ) const
+{
+    std::unique_lock aGuard( maMutex );
+
+    if ( !mbTransliterateIgnoreCase )
+    {
+        // Change mbTransliterateIgnoreCase and destroy the wrapper, next call to
+        // ImplGetTransliterationWrapper() will create a wrapper with the correct bIgnoreCase
+        const_cast<vcl::I18nHelper*>(this)->mbTransliterateIgnoreCase = true;
+        const_cast<vcl::I18nHelper*>(this)->mpTransliterationWrapper.reset();
+    }
+
+    OUString aStr1( filterFormattingChars(rStr1) );
+    OUString aStr2( filterFormattingChars(rStr2) );
+    return ImplGetTransliterationWrapper().isMatch( aStr1, aStr2 );
+}
+
+bool vcl::I18nHelper::MatchMnemonic( std::u16string_view rString, sal_Unicode cMnemonicChar ) const
+{
+    size_t n = rString.find( '~' );
+    if ( n == std::u16string_view::npos )
+        return false;
+    OUString aMatchStr( rString.substr( n+1 ) );   // not only one char, because of transliteration...
+    return MatchString( OUString(cMnemonicChar), aMatchStr );
+}
+
+OUString vcl::I18nHelper::GetNum( tools::Long nNumber, sal_uInt16 nDecimals, bool bUseThousandSep, bool bTrailingZeros ) const
+{
+    return ImplGetLocaleDataWrapper().getNum( nNumber, nDecimals, bUseThousandSep, bTrailingZeros );
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */