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1 : : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : : /*
3 : : * This file is part of the LibreOffice project.
4 : : *
5 : : * This Source Code Form is subject to the terms of the Mozilla Public
6 : : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : : *
9 : : * This file incorporates work covered by the following license notice:
10 : : *
11 : : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : : * contributor license agreements. See the NOTICE file distributed
13 : : * with this work for additional information regarding copyright
14 : : * ownership. The ASF licenses this file to you under the Apache
15 : : * License, Version 2.0 (the "License"); you may not use this file
16 : : * except in compliance with the License. You may obtain a copy of
17 : : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : : */
19 : :
20 : : #ifndef OOX_OLE_VBAINPUTSTREAM_HXX
21 : : #define OOX_OLE_VBAINPUTSTREAM_HXX
22 : :
23 : : #include <vector>
24 : : #include "oox/helper/binaryinputstream.hxx"
25 : :
26 : : namespace oox {
27 : : namespace ole {
28 : :
29 : : // ============================================================================
30 : :
31 : : /** A non-seekable input stream that implements run-length decompression. */
32 [ + - ][ + - ]: 114 : class VbaInputStream : public BinaryInputStream
[ - + ][ # # ]
33 : : {
34 : : public:
35 : : explicit VbaInputStream( BinaryInputStream& rInStrm );
36 : :
37 : : /** Returns -1, stream size is not determinable. */
38 : : virtual sal_Int64 size() const;
39 : : /** Returns -1, stream position is not tracked. */
40 : : virtual sal_Int64 tell() const;
41 : : /** Does nothing, stream is not seekable. */
42 : : virtual void seek( sal_Int64 nPos );
43 : : /** Closes the input stream but not the wrapped stream. */
44 : : virtual void close();
45 : :
46 : : /** Reads nBytes bytes to the passed sequence.
47 : : @return Number of bytes really read. */
48 : : virtual sal_Int32 readData( StreamDataSequence& orData, sal_Int32 nBytes, size_t nAtomSize = 1 );
49 : : /** Reads nBytes bytes to the (existing) buffer opMem.
50 : : @return Number of bytes really read. */
51 : : virtual sal_Int32 readMemory( void* opMem, sal_Int32 nBytes, size_t nAtomSize = 1 );
52 : : /** Seeks the stream forward by the passed number of bytes. */
53 : : virtual void skip( sal_Int32 nBytes, size_t nAtomSize = 1 );
54 : :
55 : : private:
56 : : /** If no data left in chunk buffer, reads the next chunk from stream. */
57 : : bool updateChunk();
58 : :
59 : : private:
60 : : typedef ::std::vector< sal_uInt8 > ChunkBuffer;
61 : :
62 : : BinaryInputStream* mpInStrm;
63 : : ChunkBuffer maChunk;
64 : : size_t mnChunkPos;
65 : : };
66 : :
67 : : // ============================================================================
68 : :
69 : : } // namespace ole
70 [ + - ][ + - ]: 285 : } // namespace oox
71 : :
72 : : #endif
73 : :
74 : : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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