Line data Source code
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 : #include <tools/stream.hxx>
21 : #include "pptatom.hxx"
22 :
23 : using namespace ppt;
24 :
25 5192 : Atom::Atom( const DffRecordHeader& rRecordHeader, SvStream& rStream )
26 : : mrStream( rStream )
27 : , maRecordHeader( rRecordHeader )
28 : , mpFirstChild( 0 )
29 5192 : , mpNextAtom( 0 )
30 : {
31 5192 : if( isContainer() )
32 : {
33 1956 : if( seekToContent() )
34 : {
35 1956 : DffRecordHeader aChildHeader;
36 :
37 1956 : Atom* pLastAtom = NULL;
38 :
39 : // retrieve file size (to allow sanity checks)
40 1956 : const sal_Size nStreamPos = mrStream.Tell();
41 1956 : mrStream.Seek( STREAM_SEEK_TO_END );
42 1956 : const sal_Size nStreamSize = mrStream.Tell();
43 1956 : mrStream.Seek( nStreamPos );
44 :
45 16166 : while( (mrStream.GetError() == 0 )
46 7105 : && ( mrStream.Tell() < nStreamSize )
47 14210 : && ( mrStream.Tell() < maRecordHeader.GetRecEndFilePos() ) )
48 : {
49 5149 : ReadDffRecordHeader( mrStream, aChildHeader );
50 :
51 5149 : if( mrStream.GetError() == 0 )
52 : {
53 5149 : Atom* pAtom = new Atom( aChildHeader, mrStream );
54 :
55 5149 : if( pLastAtom )
56 3403 : pLastAtom->mpNextAtom = pAtom;
57 5149 : if( mpFirstChild == NULL )
58 1746 : mpFirstChild = pAtom;
59 :
60 5149 : pLastAtom = pAtom;
61 : }
62 : }
63 : }
64 : }
65 :
66 5192 : maRecordHeader.SeekToEndOfRecord( mrStream );
67 5192 : }
68 :
69 5192 : Atom::~Atom()
70 : {
71 5192 : Atom* pChild = mpFirstChild;
72 15533 : while( pChild )
73 : {
74 5149 : Atom* pNextChild = pChild->mpNextAtom;
75 5149 : delete pChild;
76 5149 : pChild = pNextChild;
77 : }
78 5192 : }
79 :
80 : /** imports this atom and its child atoms */
81 43 : Atom* Atom::import( const DffRecordHeader& rRootRecordHeader, SvStream& rStCtrl )
82 : {
83 43 : Atom* pRootAtom = new Atom( rRootRecordHeader, rStCtrl );
84 :
85 43 : if( rStCtrl.GetError() == 0 )
86 : {
87 43 : return pRootAtom;
88 : }
89 : else
90 : {
91 0 : delete pRootAtom;
92 0 : return NULL;
93 : }
94 : }
95 :
96 : /** returns the next child atom after pLast with nRecType or NULL */
97 3603 : const Atom* Atom::findNextChildAtom( sal_uInt16 nRecType, const Atom* pLast ) const
98 : {
99 3603 : Atom* pChild = pLast != NULL ? pLast->mpNextAtom : mpFirstChild;
100 14771 : while( pChild && pChild->maRecordHeader.nRecType != nRecType )
101 : {
102 7565 : pChild = pChild->mpNextAtom;
103 : }
104 :
105 3603 : return pChild;
106 : }
107 :
108 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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