diff options
Diffstat (limited to 'oox/inc/oox/ole/vbainputstream.hxx')
-rw-r--r-- | oox/inc/oox/ole/vbainputstream.hxx | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/oox/inc/oox/ole/vbainputstream.hxx b/oox/inc/oox/ole/vbainputstream.hxx new file mode 100644 index 000000000000..bc73eb3b2ce2 --- /dev/null +++ b/oox/inc/oox/ole/vbainputstream.hxx @@ -0,0 +1,80 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +#ifndef OOX_OLE_VBAINPUTSTREAM_HXX +#define OOX_OLE_VBAINPUTSTREAM_HXX + +#include <vector> +#include "oox/helper/binaryinputstream.hxx" + +namespace oox { +namespace ole { + +// ============================================================================ + +/** A non-seekable input stream that implements run-length decompression. */ +class VbaInputStream : public BinaryInputStream +{ +public: + explicit VbaInputStream( BinaryInputStream& rInStrm ); + + /** Returns -1, stream size is not determinable. */ + virtual sal_Int64 size() const; + /** Returns -1, stream position is not tracked. */ + virtual sal_Int64 tell() const; + /** Does nothing, stream is not seekable. */ + virtual void seek( sal_Int64 nPos ); + /** Closes the input stream but not the wrapped stream. */ + virtual void close(); + + /** 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 ); + /** 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 ); + /** Seeks the stream forward by the passed number of bytes. */ + virtual void skip( sal_Int32 nBytes, size_t nAtomSize = 1 ); + +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 |