Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 79 insertions, 0 deletions

diff --git a/include/comphelper/streamsection.hxx b/include/comphelper/streamsection.hxx
new file mode 100644
index 000000000..fa1fe8ac9
--- /dev/null
+++ b/include/comphelper/streamsection.hxx
@@ -0,0 +1,79 @@
+/* -*- 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: */