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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 16:51:28 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 16:51:28 +0000 |
commit | 940b4d1848e8c70ab7642901a68594e8016caffc (patch) | |
tree | eb72f344ee6c3d9b80a7ecc079ea79e9fba8676d /include/oox/ole/vbainputstream.hxx | |
parent | Initial commit. (diff) | |
download | libreoffice-upstream.tar.xz libreoffice-upstream.zip |
Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | include/oox/ole/vbainputstream.hxx | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/include/oox/ole/vbainputstream.hxx b/include/oox/ole/vbainputstream.hxx new file mode 100644 index 000000000..e03429ec6 --- /dev/null +++ b/include/oox/ole/vbainputstream.hxx @@ -0,0 +1,76 @@ +/* -*- 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_OOX_OLE_VBAINPUTSTREAM_HXX +#define INCLUDED_OOX_OLE_VBAINPUTSTREAM_HXX + +#include <cstddef> +#include <vector> + +#include <oox/helper/binaryinputstream.hxx> +#include <oox/helper/binarystreambase.hxx> +#include <sal/types.h> + +namespace oox { +namespace ole { + + +/** A non-seekable input stream that implements run-length decompression. */ +class VbaInputStream final : public BinaryInputStream +{ +public: + explicit VbaInputStream( BinaryInputStream& rInStrm ); + + /** Returns -1, stream size is not determinable. */ + virtual sal_Int64 size() const override; + /** Returns -1, stream position is not tracked. */ + virtual sal_Int64 tell() const override; + /** Does nothing, stream is not seekable. */ + virtual void seek( sal_Int64 nPos ) override; + /** Closes the input stream but not the wrapped stream. */ + virtual void close() override; + + /** Reads nBytes bytes to the passed sequence. + @return Number of bytes really read. */ + virtual sal_Int32 readData( StreamDataSequence& orData, sal_Int32 nBytes, size_t nAtomSize = 1 ) override; + /** Reads nBytes bytes to the (existing) buffer opMem. + @return Number of bytes really read. */ + virtual sal_Int32 readMemory( void* opMem, sal_Int32 nBytes, size_t nAtomSize = 1 ) override; + /** Seeks the stream forward by the passed number of bytes. */ + virtual void skip( sal_Int32 nBytes, size_t nAtomSize = 1 ) override; + +private: + /** If no data left in chunk buffer, reads the next chunk from stream. */ + bool updateChunk(); + +private: + typedef ::std::vector< sal_uInt8 > ChunkBuffer; + + BinaryInputStream* mpInStrm; + ChunkBuffer maChunk; + size_t mnChunkPos; +}; + + +} // namespace ole +} // namespace oox + +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |