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diff --git a/include/unotools/transliterationwrapper.hxx b/include/unotools/transliterationwrapper.hxx
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+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_UNOTOOLS_TRANSLITERATIONWRAPPER_HXX
+#define INCLUDED_UNOTOOLS_TRANSLITERATIONWRAPPER_HXX
+
+#include <unotools/unotoolsdllapi.h>
+#include <rtl/ustring.hxx>
+#include <i18nlangtag/languagetag.hxx>
+#include <i18nlangtag/lang.h>
+#include <com/sun/star/uno/Reference.hxx>
+
+namespace com::sun::star::uno { template <typename > class Sequence; }
+namespace com::sun::star::i18n { class XExtendedTransliteration; }
+namespace com::sun::star::uno { class XComponentContext; }
+enum class TransliterationFlags;
+
+namespace utl
+{
+
+class UNOTOOLS_DLLPUBLIC TransliterationWrapper
+{
+    css::uno::Reference< css::i18n::XExtendedTransliteration > xTrans;
+    LanguageTag aLanguageTag;
+    TransliterationFlags nType;
+    mutable bool bFirstCall;
+
+    TransliterationWrapper( const TransliterationWrapper& ) = delete;
+    TransliterationWrapper& operator=( const TransliterationWrapper& ) = delete;
+
+    void loadModuleImpl() const;
+    void setLanguageLocaleImpl( LanguageType nLang );
+
+public:
+    TransliterationWrapper( const css::uno::Reference< css::uno::XComponentContext > & rxContext,
+                    TransliterationFlags nType );
+
+    ~TransliterationWrapper();
+
+    TransliterationFlags getType() const { return nType; }
+
+    bool needLanguageForTheMode() const;
+
+    /** set a new language and load the corresponding transliteration module if
+        needed for the mode set with nType in the ctor */
+    void loadModuleIfNeeded( LanguageType nLang );
+
+    /** Load the transliteration module specified by rModuleName, which has to
+        be the UNO service implementation name that is expanded to the full UNO
+        service implementation name, for example, "NumToCharKanjiShort_ja_JP"
+        expands to
+        "com.sun.star.i18n.Transliteration.NumToCharKanjiShort_ja_JP".
+        @ATTENTION!
+        This method ignores the mode type set with the constructor and
+        interferes with the loadModuleIfNeeded() method and the transliterate()
+        method that gets a LanguageType passed as parameter.  Using one of
+        those may load a different module and overwrite this setting. Only the
+        transliterate() method that takes no LanguageType parameter may be used
+        for a specific module loaded with this method.  */
+    void loadModuleByImplName( const OUString& rModuleName, LanguageType nLang );
+
+    /** This transliteration method corresponds with the loadModuleByImplName()
+        method. It relies on a module being loaded and does not try load one.
+        If for any reason the string can't be transliterated the original
+        string is returned.  */
+    OUString transliterate( const OUString& rStr,
+                        sal_Int32 nStart, sal_Int32 nLen ) const;
+
+    // Wrapper implementations of class Transliteration
+    OUString transliterate( const OUString& rStr, LanguageType nLanguage,
+                        sal_Int32 nStart, sal_Int32 nLen,
+                        css::uno::Sequence <sal_Int32>* pOffset );
+
+    /** If two strings are equal per this transliteration.
+        Returns the number of matched code points in any case, even if strings
+        are not equal, for example:
+        equals( "a", 0, 1, nMatch1, "aaa", 0, 3, nMatch2 )
+        returns false and nMatch:=1 and nMatch2:=1
+        equals( "aab", 0, 3, nMatch1, "aaa", 0, 3, nMatch2 )
+        returns false and nMatch:=2 and nMatch2:=2
+     */
+    bool equals(
+        const OUString& rStr1, sal_Int32 nPos1, sal_Int32 nCount1, sal_Int32& nMatch1,
+        const OUString& rStr2, sal_Int32 nPos2, sal_Int32 nCount2, sal_Int32& nMatch2 ) const;
+
+    sal_Int32 compareString( const OUString& rStr1, const OUString& rStr2 ) const;
+
+    // helpers
+
+    /** If two strings are really equal as per this translation, and not just
+        one string is matching the start of the other. Use this method instead
+        of compareString()==0 because it is much faster.
+     */
+    bool isEqual( const OUString& rStr1, const OUString& rStr2 ) const;
+
+    /** If string rStr1 matches the start of string rStr2, i.e. "a" in "aaa"
+     */
+    bool isMatch( const OUString& rStr1, const OUString& rStr2 ) const;
+
+};
+
+}       // namespace utl
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */