LCOV - code coverage report
Current view: top level - oox/source/core - recordparser.cxx (source / functions) Hit Total Coverage
Test: commit 10e77ab3ff6f4314137acd6e2702a6e5c1ce1fae Lines: 0 136 0.0 %
Date: 2014-11-03 Functions: 0 28 0.0 %
Legend: Lines: hit not hit

          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 "oox/core/recordparser.hxx"
      21             : 
      22             : #include <vector>
      23             : #include <com/sun/star/lang/DisposedException.hpp>
      24             : #include <com/sun/star/xml/sax/XLocator.hpp>
      25             : #include <cppuhelper/implbase1.hxx>
      26             : #include "oox/core/fragmenthandler.hxx"
      27             : 
      28             : namespace oox {
      29             : namespace core {
      30             : 
      31             : using namespace ::com::sun::star::io;
      32             : using namespace ::com::sun::star::lang;
      33             : using namespace ::com::sun::star::uno;
      34             : using namespace ::com::sun::star::xml::sax;
      35             : 
      36             : namespace prv {
      37             : 
      38           0 : class Locator : public ::cppu::WeakImplHelper1< XLocator >
      39             : {
      40             : public:
      41           0 :     inline explicit         Locator( RecordParser* pParser ) : mpParser( pParser ) {}
      42             : 
      43             :     void                    dispose();
      44             :     void                    checkDispose() throw( RuntimeException );
      45             : 
      46             :     // com.sun.star.sax.XLocator interface
      47             : 
      48             :     virtual sal_Int32 SAL_CALL getColumnNumber() throw( RuntimeException, std::exception ) SAL_OVERRIDE;
      49             :     virtual sal_Int32 SAL_CALL getLineNumber() throw( RuntimeException, std::exception ) SAL_OVERRIDE;
      50             :     virtual OUString SAL_CALL getPublicId() throw( RuntimeException, std::exception ) SAL_OVERRIDE;
      51             :     virtual OUString SAL_CALL getSystemId() throw( RuntimeException, std::exception ) SAL_OVERRIDE;
      52             : 
      53             : private:
      54             :     RecordParser*           mpParser;
      55             : };
      56             : 
      57           0 : void Locator::dispose()
      58             : {
      59           0 :     mpParser = 0;
      60           0 : }
      61             : 
      62           0 : void Locator::checkDispose() throw( RuntimeException )
      63             : {
      64           0 :     if( !mpParser )
      65           0 :         throw DisposedException();
      66           0 : }
      67             : 
      68           0 : sal_Int32 SAL_CALL Locator::getColumnNumber() throw( RuntimeException, std::exception )
      69             : {
      70           0 :     return -1;
      71             : }
      72             : 
      73           0 : sal_Int32 SAL_CALL Locator::getLineNumber() throw( RuntimeException, std::exception )
      74             : {
      75           0 :     return -1;
      76             : }
      77             : 
      78           0 : OUString SAL_CALL Locator::getPublicId() throw( RuntimeException, std::exception )
      79             : {
      80           0 :     checkDispose();
      81           0 :     return mpParser->getInputSource().maPublicId;
      82             : }
      83             : 
      84           0 : OUString SAL_CALL Locator::getSystemId() throw( RuntimeException, std::exception )
      85             : {
      86           0 :     checkDispose();
      87           0 :     return mpParser->getInputSource().maSystemId;
      88             : }
      89             : 
      90           0 : class ContextStack
      91             : {
      92             : public:
      93             :     explicit            ContextStack( FragmentHandlerRef xHandler );
      94             : 
      95           0 :     inline bool         empty() const { return maStack.empty(); }
      96             : 
      97             :     sal_Int32           getCurrentRecId() const;
      98             :     bool                hasCurrentEndRecId() const;
      99             :     ContextHandlerRef   getCurrentContext() const;
     100             : 
     101             :     void                pushContext( const RecordInfo& rRec, const ContextHandlerRef& rxContext );
     102             :     void                popContext();
     103             : 
     104             : private:
     105             :     typedef ::std::pair< RecordInfo, ContextHandlerRef >    ContextInfo;
     106             :     typedef ::std::vector< ContextInfo >                    ContextInfoVec;
     107             : 
     108             :     FragmentHandlerRef  mxHandler;
     109             :     ContextInfoVec      maStack;
     110             : };
     111             : 
     112           0 : ContextStack::ContextStack( FragmentHandlerRef xHandler ) :
     113           0 :     mxHandler( xHandler )
     114             : {
     115           0 : }
     116             : 
     117           0 : sal_Int32 ContextStack::getCurrentRecId() const
     118             : {
     119           0 :     return maStack.empty() ? -1 : maStack.back().first.mnStartRecId;
     120             : }
     121             : 
     122           0 : bool ContextStack::hasCurrentEndRecId() const
     123             : {
     124           0 :     return !maStack.empty() && (maStack.back().first.mnEndRecId >= 0);
     125             : }
     126             : 
     127           0 : ContextHandlerRef ContextStack::getCurrentContext() const
     128             : {
     129           0 :     if( !maStack.empty() )
     130           0 :         return maStack.back().second;
     131           0 :     return mxHandler.get();
     132             : }
     133             : 
     134           0 : void ContextStack::pushContext( const RecordInfo& rRecInfo, const ContextHandlerRef& rxContext )
     135             : {
     136             :     OSL_ENSURE( (rRecInfo.mnEndRecId >= 0) || maStack.empty() || hasCurrentEndRecId(),
     137             :         "ContextStack::pushContext - nested incomplete context record identifiers" );
     138           0 :     maStack.push_back( ContextInfo( rRecInfo, rxContext ) );
     139           0 : }
     140             : 
     141           0 : void ContextStack::popContext()
     142             : {
     143             :     OSL_ENSURE( !maStack.empty(), "ContextStack::popContext - no context on stack" );
     144           0 :     if( !maStack.empty() )
     145             :     {
     146           0 :         ContextInfo& rContextInfo = maStack.back();
     147           0 :         if( rContextInfo.second.is() )
     148           0 :             rContextInfo.second->endRecord( rContextInfo.first.mnStartRecId );
     149           0 :         maStack.pop_back();
     150             :     }
     151           0 : }
     152             : 
     153             : } // namespace prv
     154             : 
     155             : namespace {
     156             : 
     157             : /** Reads a byte from the passed stream, returns true on success. */
     158           0 : inline bool lclReadByte( sal_uInt8& ornByte, BinaryInputStream& rStrm )
     159             : {
     160           0 :     return rStrm.readMemory( &ornByte, 1 ) == 1;
     161             : }
     162             : 
     163             : /** Reads a compressed signed 32-bit integer from the passed stream. */
     164           0 : bool lclReadCompressedInt( sal_Int32& ornValue, BinaryInputStream& rStrm )
     165             : {
     166           0 :     ornValue = 0;
     167             :     sal_uInt8 nByte;
     168           0 :     if( !lclReadByte( nByte, rStrm ) ) return false;
     169           0 :     ornValue = nByte & 0x7F;
     170           0 :     if( (nByte & 0x80) == 0 ) return true;
     171           0 :     if( !lclReadByte( nByte, rStrm ) ) return false;
     172           0 :     ornValue |= sal_Int32( nByte & 0x7F ) << 7;
     173           0 :     if( (nByte & 0x80) == 0 ) return true;
     174           0 :     if( !lclReadByte( nByte, rStrm ) ) return false;
     175           0 :     ornValue |= sal_Int32( nByte & 0x7F ) << 14;
     176           0 :     if( (nByte & 0x80) == 0 ) return true;
     177           0 :     if( !lclReadByte( nByte, rStrm ) ) return false;
     178           0 :     ornValue |= sal_Int32( nByte & 0x7F ) << 21;
     179           0 :     return true;
     180             : }
     181             : 
     182           0 : bool lclReadRecordHeader( sal_Int32& ornRecId, sal_Int32& ornRecSize, BinaryInputStream& rStrm )
     183             : {
     184             :     return
     185           0 :         lclReadCompressedInt( ornRecId, rStrm ) && (ornRecId >= 0) &&
     186           0 :         lclReadCompressedInt( ornRecSize, rStrm ) && (ornRecSize >= 0);
     187             : }
     188             : 
     189           0 : bool lclReadNextRecord( sal_Int32& ornRecId, StreamDataSequence& orData, BinaryInputStream& rStrm )
     190             : {
     191           0 :     sal_Int32 nRecSize = 0;
     192           0 :     bool bValid = lclReadRecordHeader( ornRecId, nRecSize, rStrm );
     193           0 :     if( bValid )
     194             :     {
     195           0 :         orData.realloc( nRecSize );
     196           0 :         bValid = (nRecSize == 0) || (rStrm.readData( orData, nRecSize ) == nRecSize);
     197             :     }
     198           0 :     return bValid;
     199             : }
     200             : 
     201             : } // namespace
     202             : 
     203           0 : RecordParser::RecordParser()
     204             : {
     205           0 :     mxLocator.set( new prv::Locator( this ) );
     206           0 : }
     207             : 
     208           0 : RecordParser::~RecordParser()
     209             : {
     210           0 :     if( mxLocator.is() )
     211           0 :         mxLocator->dispose();
     212           0 : }
     213             : 
     214           0 : void RecordParser::setFragmentHandler( const ::rtl::Reference< FragmentHandler >& rxHandler )
     215             : {
     216           0 :     mxHandler = rxHandler;
     217             : 
     218             :     // build record infos
     219           0 :     maStartMap.clear();
     220           0 :     maEndMap.clear();
     221           0 :     const RecordInfo* pRecs = mxHandler.is() ? mxHandler->getRecordInfos() : 0;
     222             :     OSL_ENSURE( pRecs, "RecordInfoProvider::RecordInfoProvider - missing record list" );
     223           0 :     for( ; pRecs && pRecs->mnStartRecId >= 0; ++pRecs )
     224             :     {
     225           0 :         maStartMap[ pRecs->mnStartRecId ] = *pRecs;
     226           0 :         if( pRecs->mnEndRecId >= 0 )
     227           0 :             maEndMap[ pRecs->mnEndRecId ] = *pRecs;
     228             :     }
     229           0 : }
     230             : 
     231           0 : void RecordParser::parseStream( const RecordInputSource& rInputSource ) throw( SAXException, IOException, RuntimeException )
     232             : {
     233           0 :     maSource = rInputSource;
     234             : 
     235           0 :     if( !maSource.mxInStream || maSource.mxInStream->isEof() )
     236           0 :         throw IOException();
     237           0 :     if( !mxHandler.is() )
     238           0 :         throw SAXException();
     239             : 
     240             :     // start the document
     241           0 :     Reference< XLocator > xLocator( mxLocator.get() );
     242           0 :     mxHandler->setDocumentLocator( xLocator );
     243           0 :     mxHandler->startDocument();
     244             : 
     245             :     // parse the stream
     246           0 :     mxStack.reset( new prv::ContextStack( mxHandler ) );
     247           0 :     sal_Int32 nRecId = 0;
     248           0 :     StreamDataSequence aRecData;
     249           0 :     while( lclReadNextRecord( nRecId, aRecData, *maSource.mxInStream ) )
     250             :     {
     251             :         // create record stream object from imported record data
     252           0 :         SequenceInputStream aRecStrm( aRecData );
     253             :         // try to leave a context, there may be other incomplete contexts on the stack
     254           0 :         if( const RecordInfo* pEndRecInfo = getEndRecordInfo( nRecId ) )
     255             :         {
     256             :             // finalize contexts without record identifier for context end
     257           0 :             while( !mxStack->empty() && !mxStack->hasCurrentEndRecId() )
     258           0 :                 mxStack->popContext();
     259             :             // finalize the current context and pop context info from stack
     260             :             OSL_ENSURE( mxStack->getCurrentRecId() == pEndRecInfo->mnStartRecId, "RecordParser::parseStream - context records mismatch" );
     261             :             (void)pEndRecInfo;  // suppress compiler warning for unused variable
     262           0 :             ContextHandlerRef xCurrContext = mxStack->getCurrentContext();
     263           0 :             if( xCurrContext.is() )
     264             :             {
     265             :                 // context end record may contain some data, handle it as simple record
     266           0 :                 aRecStrm.seekToStart();
     267           0 :                 xCurrContext->startRecord( nRecId, aRecStrm );
     268           0 :                 xCurrContext->endRecord( nRecId );
     269             :             }
     270           0 :             mxStack->popContext();
     271             :         }
     272             :         else
     273             :         {
     274             :             // end context with incomplete record id, if the same id comes again
     275           0 :             if( (mxStack->getCurrentRecId() == nRecId) && !mxStack->hasCurrentEndRecId() )
     276           0 :                 mxStack->popContext();
     277             :             // try to start a new context
     278           0 :             ContextHandlerRef xCurrContext = mxStack->getCurrentContext();
     279           0 :             if( xCurrContext.is() )
     280             :             {
     281           0 :                 aRecStrm.seekToStart();
     282           0 :                 xCurrContext = xCurrContext->createRecordContext( nRecId, aRecStrm );
     283             :             }
     284             :             // track all context identifiers on the stack (do not push simple records)
     285           0 :             const RecordInfo* pStartRecInfo = getStartRecordInfo( nRecId );
     286           0 :             if( pStartRecInfo )
     287           0 :                 mxStack->pushContext( *pStartRecInfo, xCurrContext );
     288             :             // import the record
     289           0 :             if( xCurrContext.is() )
     290             :             {
     291             :                 // import the record
     292           0 :                 aRecStrm.seekToStart();
     293           0 :                 xCurrContext->startRecord( nRecId, aRecStrm );
     294             :                 // end simple records (context records are finished in ContextStack::popContext)
     295           0 :                 if( !pStartRecInfo )
     296           0 :                     xCurrContext->endRecord( nRecId );
     297           0 :             }
     298             :         }
     299           0 :     }
     300             :     // close remaining contexts (missing context end records or stream error)
     301           0 :     while( !mxStack->empty() )
     302           0 :         mxStack->popContext();
     303           0 :     mxStack.reset();
     304             : 
     305             :     // finish document
     306           0 :     mxHandler->endDocument();
     307             : 
     308           0 :     maSource = RecordInputSource();
     309           0 : }
     310             : 
     311           0 : const RecordInfo* RecordParser::getStartRecordInfo( sal_Int32 nRecId ) const
     312             : {
     313           0 :     RecordInfoMap::const_iterator aIt = maStartMap.find( nRecId );
     314           0 :     return (aIt == maStartMap.end()) ? 0 : &aIt->second;
     315             : }
     316             : 
     317           0 : const RecordInfo* RecordParser::getEndRecordInfo( sal_Int32 nRecId ) const
     318             : {
     319           0 :     RecordInfoMap::const_iterator aIt = maEndMap.find( nRecId );
     320           0 :     return (aIt == maEndMap.end()) ? 0 : &aIt->second;
     321             : }
     322             : 
     323             : } // namespace core
     324             : } // namespace oox
     325             : 
     326             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

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