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Diffstat (limited to 'sd/source/filter/ppt/pptatom.cxx')
-rw-r--r-- | sd/source/filter/ppt/pptatom.cxx | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/sd/source/filter/ppt/pptatom.cxx b/sd/source/filter/ppt/pptatom.cxx new file mode 100644 index 000000000..24d87f040 --- /dev/null +++ b/sd/source/filter/ppt/pptatom.cxx @@ -0,0 +1,104 @@ +/* -*- 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 . + */ + +#include <tools/stream.hxx> +#include "pptatom.hxx" + +using namespace ppt; + +Atom::Atom( const DffRecordHeader& rRecordHeader, SvStream& rStream ) +: mrStream( rStream ) +, maRecordHeader( rRecordHeader ) +, mpFirstChild( nullptr ) +, mpNextAtom( nullptr ) +{ + if( isContainer() ) + { + if( seekToContent() ) + { + DffRecordHeader aChildHeader; + + Atom* pLastAtom = nullptr; + + // retrieve file size (to allow sanity checks) + sal_uInt64 const nStreamSize = mrStream.TellEnd(); + + while( mrStream.good() + && ( mrStream.Tell() < nStreamSize ) + && ( mrStream.Tell() < maRecordHeader.GetRecEndFilePos() ) ) + { + if (ReadDffRecordHeader(mrStream, aChildHeader)) + { + Atom* pAtom = new Atom( aChildHeader, mrStream ); + + if( pLastAtom ) + pLastAtom->mpNextAtom = pAtom; + if( mpFirstChild == nullptr ) + mpFirstChild = pAtom; + + pLastAtom = pAtom; + } + } + } + } + + if (!maRecordHeader.SeekToEndOfRecord(mrStream)) + mrStream.SetError(SVSTREAM_FILEFORMAT_ERROR); +} + +Atom::~Atom() +{ + Atom* pChild = mpFirstChild; + while( pChild ) + { + Atom* pNextChild = pChild->mpNextAtom; + delete pChild; + pChild = pNextChild; + } +} + +/** imports this atom and its child atoms */ +Atom* Atom::import( const DffRecordHeader& rRootRecordHeader, SvStream& rStCtrl ) +{ + Atom* pRootAtom = new Atom( rRootRecordHeader, rStCtrl ); + + if( rStCtrl.GetError() == ERRCODE_NONE ) + { + return pRootAtom; + } + else + { + delete pRootAtom; + return nullptr; + } +} + +/** returns the next child atom after pLast with nRecType or NULL */ +const Atom* Atom::findNextChildAtom( sal_uInt16 nRecType, const Atom* pLast ) const +{ + Atom* pChild = pLast != nullptr ? pLast->mpNextAtom : mpFirstChild; + while( pChild && pChild->maRecordHeader.nRecType != nRecType ) + { + pChild = pChild->mpNextAtom; + } + + return pChild; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |