1c4c096f73
Change-Id: I9ea016adcec334437da45296ee325453347836ae Reviewed-on: https://gerrit.libreoffice.org/c/core/+/99002 Tested-by: Jenkins Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
74 lines
2.7 KiB
C++
74 lines
2.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_OOX_OLE_VBAINPUTSTREAM_HXX
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#define INCLUDED_OOX_OLE_VBAINPUTSTREAM_HXX
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#include <cstddef>
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#include <vector>
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#include <oox/helper/binaryinputstream.hxx>
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#include <oox/helper/binarystreambase.hxx>
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#include <sal/types.h>
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namespace oox::ole {
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/** A non-seekable input stream that implements run-length decompression. */
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class VbaInputStream final : public BinaryInputStream
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{
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public:
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explicit VbaInputStream( BinaryInputStream& rInStrm );
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/** Returns -1, stream size is not determinable. */
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virtual sal_Int64 size() const override;
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/** Returns -1, stream position is not tracked. */
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virtual sal_Int64 tell() const override;
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/** Does nothing, stream is not seekable. */
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virtual void seek( sal_Int64 nPos ) override;
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/** Closes the input stream but not the wrapped stream. */
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virtual void close() override;
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/** Reads nBytes bytes to the passed sequence.
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@return Number of bytes really read. */
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virtual sal_Int32 readData( StreamDataSequence& orData, sal_Int32 nBytes, size_t nAtomSize = 1 ) override;
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/** Reads nBytes bytes to the (existing) buffer opMem.
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@return Number of bytes really read. */
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virtual sal_Int32 readMemory( void* opMem, sal_Int32 nBytes, size_t nAtomSize = 1 ) override;
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/** Seeks the stream forward by the passed number of bytes. */
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virtual void skip( sal_Int32 nBytes, size_t nAtomSize = 1 ) override;
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private:
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/** If no data left in chunk buffer, reads the next chunk from stream. */
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bool updateChunk();
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private:
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typedef ::std::vector< sal_uInt8 > ChunkBuffer;
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BinaryInputStream* mpInStrm;
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ChunkBuffer maChunk;
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size_t mnChunkPos;
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};
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} // namespace oox::ole
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#endif
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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