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diff --git a/ucb/source/ucp/cmis/std_inputstream.hxx b/ucb/source/ucp/cmis/std_inputstream.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/.
+ */
+
+#pragma once
+
+#include <boost/shared_ptr.hpp>
+#include <istream>
+
+#include <mutex>
+#include <cppuhelper/weak.hxx>
+#include <com/sun/star/io/XInputStream.hpp>
+#include <com/sun/star/io/XSeekable.hpp>
+
+namespace cmis
+{
+ /** Implements a seekable InputStream
+ * working on an std::istream
+ */
+ class StdInputStream
+ : public cppu::OWeakObject,
+ public css::io::XInputStream,
+ public css::io::XSeekable
+ {
+ public:
+
+ StdInputStream( boost::shared_ptr< std::istream > const & pStream );
+
+ virtual ~StdInputStream() override;
+
+ virtual css::uno::Any SAL_CALL queryInterface ( const css::uno::Type& rType ) override;
+
+ virtual void SAL_CALL acquire( ) noexcept override;
+
+ virtual void SAL_CALL release( ) noexcept override;
+
+ virtual sal_Int32 SAL_CALL
+ readBytes ( css::uno::Sequence< sal_Int8 >& aData,
+ sal_Int32 nBytesToRead ) override;
+
+ virtual sal_Int32 SAL_CALL
+ readSomeBytes ( css::uno::Sequence< sal_Int8 >& aData,
+ sal_Int32 nMaxBytesToRead ) override;
+
+ virtual void SAL_CALL
+ skipBytes ( sal_Int32 nBytesToSkip ) override;
+
+ virtual sal_Int32 SAL_CALL
+ available ( ) override;
+
+ virtual void SAL_CALL
+ closeInput ( ) override;
+
+
+ /** XSeekable
+ */
+
+ virtual void SAL_CALL
+ seek ( sal_Int64 location ) override;
+
+
+ virtual sal_Int64 SAL_CALL
+ getPosition ( ) override;
+
+
+ virtual sal_Int64 SAL_CALL
+ getLength ( ) override;
+
+ private:
+
+ std::mutex m_aMutex;
+ boost::shared_ptr< std::istream > m_pStream;
+ sal_Int64 m_nLength;
+ };
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */