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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_COMPHELPER_STREAMSECTION_HXX
+#define INCLUDED_COMPHELPER_STREAMSECTION_HXX
+
+#include <config_options.h>
+#include <com/sun/star/uno/Reference.h>
+#include <comphelper/comphelperdllapi.h>
+
+namespace com::sun::star::io { class XDataInputStream; }
+namespace com::sun::star::io { class XDataOutputStream; }
+namespace com::sun::star::io { class XMarkableStream; }
+
+namespace comphelper
+{
+
+/** implements handling for compatibly reading/writing data from/into an input/output stream.
+ data written in a block secured by this class should be readable by older versions which
+ use the same mechanism.
+*/
+
+class UNLESS_MERGELIBS(COMPHELPER_DLLPUBLIC) OStreamSection
+{
+ css::uno::Reference< css::io::XMarkableStream > m_xMarkStream;
+ css::uno::Reference< css::io::XDataInputStream > m_xInStream;
+ css::uno::Reference< css::io::XDataOutputStream > m_xOutStream;
+
+ sal_Int32 m_nBlockStart;
+ sal_Int32 m_nBlockLen;
+
+public:
+ /** starts reading of a "skippable" section of data within the given input stream<BR>
+ @param _rxInput the stream to read from. Must support the
+ css::io::XMarkableStream interface
+ */
+ OStreamSection(const css::uno::Reference< css::io::XDataInputStream >& _rxInput);
+
+ /** starts writing of a "skippable" section of data into the given output stream
+ @param _rxOutput the stream the stream to write to. Must support the
+ css::io::XMarkableStream interface
+ */
+ OStreamSection(const css::uno::Reference< css::io::XDataOutputStream >& _rxOutput);
+
+ /** dtor. <BR>If constructed for writing, the section "opened" by this object will be "closed".<BR>
+ If constructed for reading, any remaining bytes 'til the end of the section will be skipped.
+ */
+ ~OStreamSection();
+};
+
+} // namespace comphelper
+
+#endif // INCLUDED_COMPHELPER_STREAMSECTION_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */