sd/source/filter/ppt/pptatom.cpp

   1 /*************************************************************************
   2  *
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * Copyright 2008 by Sun Microsystems, Inc.
   6  *
   7  * OpenOffice.org - a multi-platform office productivity suite
   8  *
   9  * $RCSfile: pptatom.cpp,v $
  10  * $Revision: 1.5 $
  11  *
  12  * This file is part of OpenOffice.org.
  13  *
  14  * OpenOffice.org is free software: you can redistribute it and/or modify
  15  * it under the terms of the GNU Lesser General Public License version 3
  16  * only, as published by the Free Software Foundation.
  17  *
  18  * OpenOffice.org is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU Lesser General Public License version 3 for more details
  22  * (a copy is included in the LICENSE file that accompanied this code).
  23  *
  24  * You should have received a copy of the GNU Lesser General Public License
  25  * version 3 along with OpenOffice.org.  If not, see
  26  * <http://www.openoffice.org/license.html>
  27  * for a copy of the LGPLv3 License.
  28  *
  29  ************************************************************************/
  30
  31 #ifndef _STREAM_HXX
  32 #include <tools/stream.hxx>
  33 #endif
  34
  35 #ifndef _PPTATOM_HXX_
  36 #include "pptatom.hxx"
  37 #endif
  38
  39 using namespace ppt;
  40
  41 Atom::Atom( const DffRecordHeader& rRecordHeader, SvStream& rStream )
  42 : mrStream( rStream )
  43 , maRecordHeader( rRecordHeader )
  44 , mpFirstChild( 0 )
  45 , mpNextAtom( 0 )
  46 {
  47     if( isContainer() )
  48     {
  49         if( seekToContent() )
  50         {
  51             DffRecordHeader aChildHeader;
  52
  53             Atom* pLastAtom = NULL;
  54
  55             while( (mrStream.GetError() == 0 ) && ( mrStream.Tell() < maRecordHeader.GetRecEndFilePos() ) )
  56             {
  57                 mrStream >> aChildHeader;
  58
  59                 if( mrStream.GetError() == 0 )
  60                 {
  61                     Atom* pAtom = new Atom( aChildHeader, mrStream );
  62
  63                     if( pLastAtom )
  64                         pLastAtom->mpNextAtom = pAtom;
  65                     if( mpFirstChild == NULL )
  66                         mpFirstChild = pAtom;
  67
  68                     pLastAtom = pAtom;
  69                 }
  70             }
  71         }
  72     }
  73
  74     maRecordHeader.SeekToEndOfRecord( mrStream );
  75 }
  76
  77 Atom::~Atom()
  78 {
  79     Atom* pChild = mpFirstChild;
  80     while( pChild )
  81     {
  82         Atom* pNextChild = pChild->mpNextAtom;
  83         delete pChild;
  84         pChild = pNextChild;
  85     }
  86 }
  87
  88 /** imports this atom and its child atoms */
  89 Atom* Atom::import( const DffRecordHeader& rRootRecordHeader, SvStream& rStCtrl )
  90 {
  91     Atom* pRootAtom = new Atom( rRootRecordHeader, rStCtrl );
  92
  93     if( rStCtrl.GetError() == 0 )
  94     {
  95         return pRootAtom;
  96     }
  97     else
  98     {
  99         delete pRootAtom;
 100         return NULL;
 101     }
 102 }
 103
 104 /** returns the next child atom after pLast with nRecType or NULL */
 105 const Atom* Atom::findNextChildAtom( sal_uInt16 nRecType, const Atom* pLast ) const
 106 {
 107     Atom* pChild = pLast != NULL ? pLast->mpNextAtom : mpFirstChild;
 108     while( pChild && pChild->maRecordHeader.nRecType != nRecType )
 109     {
 110         pChild = pChild->mpNextAtom;
 111     }
 112
 113     return pChild;
 114 }
 115
 116 /** returns the next child atom after pLast with nRecType and nRecInstance or NULL */
 117 const Atom* Atom::findNextChildAtom( sal_uInt16 nRecType, sal_uInt16 nRecInstance, const Atom* pLast ) const
 118 {
 119     const Atom* pChild = pLast != NULL ? pLast->mpNextAtom : mpFirstChild;
 120     while( pChild && (pChild->maRecordHeader.nRecType != nRecType) && (pChild->maRecordHeader.nRecInstance != nRecInstance) )
 121     {
 122         pChild = findNextChildAtom( pChild );
 123     }
 124
 125     return pChild;
 126 }