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diff --git a/sw/source/filter/ww8/rtfexportfilter.hxx b/sw/source/filter/ww8/rtfexportfilter.hxx
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+++ b/sw/source/filter/ww8/rtfexportfilter.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_SW_SOURCE_FILTER_WW8_RTFEXPORTFILTER_HXX
+#define INCLUDED_SW_SOURCE_FILTER_WW8_RTFEXPORTFILTER_HXX
+
+#include <com/sun/star/document/XFilter.hpp>
+#include <com/sun/star/document/XExporter.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <cppuhelper/implbase.hxx>
+#include <shellio.hxx>
+
+namespace com::sun::star::uno
+{
+class XComponentContext;
+}
+
+/// Dummy Writer implementation to be able to use the string format methods of the base class
+class RtfWriter : public Writer
+{
+protected:
+    ErrCode WriteStream() override { return ERRCODE_NONE; }
+};
+
+/// The physical access to the RTF document (for writing).
+class RtfExportFilter final
+    : public cppu::WeakImplHelper<css::document::XFilter, css::document::XExporter,
+                                  css::lang::XServiceInfo>
+{
+    css::uno::Reference<css::uno::XComponentContext> m_xCtx;
+    css::uno::Reference<css::lang::XComponent> m_xSrcDoc;
+    RtfWriter m_aWriter;
+
+public:
+    explicit RtfExportFilter(css::uno::Reference<css::uno::XComponentContext> xCtx);
+    ~RtfExportFilter() override;
+
+    // XFilter
+    sal_Bool SAL_CALL
+    filter(const css::uno::Sequence<css::beans::PropertyValue>& aDescriptor) override;
+    void SAL_CALL cancel() override;
+
+    // XExporter
+    void SAL_CALL
+    setSourceDocument(const css::uno::Reference<css::lang::XComponent>& xDoc) override;
+
+    OUString SAL_CALL getImplementationName() override;
+    sal_Bool SAL_CALL supportsService(OUString const& ServiceName) override;
+    css::uno::Sequence<OUString> SAL_CALL getSupportedServiceNames() override;
+
+    Writer& GetWriter() { return m_aWriter; }
+};
+
+#endif // INCLUDED_SW_SOURCE_FILTER_WW8_RTFEXPORTFILTER_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */