LCOV - code coverage report
Current view: top level - libreoffice/oox/source/core - recordparser.cxx (source / functions) Hit Total Coverage
Test: libreoffice_filtered.info Lines: 0 136 0.0 %
Date: 2012-12-27 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             : // ============================================================================
      32             : 
      33             : using namespace ::com::sun::star::io;
      34             : using namespace ::com::sun::star::lang;
      35             : using namespace ::com::sun::star::uno;
      36             : using namespace ::com::sun::star::xml::sax;
      37             : 
      38             : using ::rtl::OUString;
      39             : 
      40             : // ============================================================================
      41             : 
      42             : namespace prv {
      43             : 
      44           0 : class Locator : public ::cppu::WeakImplHelper1< XLocator >
      45             : {
      46             : public:
      47           0 :     inline explicit         Locator( RecordParser* pParser ) : mpParser( pParser ) {}
      48             : 
      49             :     void                    dispose();
      50             :     void                    checkDispose() throw( RuntimeException );
      51             : 
      52             :     // com.sun.star.sax.XLocator interface
      53             : 
      54             :     virtual sal_Int32 SAL_CALL getColumnNumber() throw( RuntimeException );
      55             :     virtual sal_Int32 SAL_CALL getLineNumber() throw( RuntimeException );
      56             :     virtual OUString SAL_CALL getPublicId() throw( RuntimeException );
      57             :     virtual OUString SAL_CALL getSystemId() throw( RuntimeException );
      58             : 
      59             : private:
      60             :     RecordParser*           mpParser;
      61             : };
      62             : 
      63             : // ----------------------------------------------------------------------------
      64             : 
      65           0 : void Locator::dispose()
      66             : {
      67           0 :     mpParser = 0;
      68           0 : }
      69             : 
      70           0 : void Locator::checkDispose() throw( RuntimeException )
      71             : {
      72           0 :     if( !mpParser )
      73           0 :         throw DisposedException();
      74           0 : }
      75             : 
      76           0 : sal_Int32 SAL_CALL Locator::getColumnNumber() throw( RuntimeException )
      77             : {
      78           0 :     return -1;
      79             : }
      80             : 
      81           0 : sal_Int32 SAL_CALL Locator::getLineNumber() throw( RuntimeException )
      82             : {
      83           0 :     return -1;
      84             : }
      85             : 
      86           0 : OUString SAL_CALL Locator::getPublicId() throw( RuntimeException )
      87             : {
      88           0 :     checkDispose();
      89           0 :     return mpParser->getInputSource().maPublicId;
      90             : }
      91             : 
      92           0 : OUString SAL_CALL Locator::getSystemId() throw( RuntimeException )
      93             : {
      94           0 :     checkDispose();
      95           0 :     return mpParser->getInputSource().maSystemId;
      96             : }
      97             : 
      98             : // ============================================================================
      99             : 
     100           0 : class ContextStack
     101             : {
     102             : public:
     103             :     explicit            ContextStack( FragmentHandlerRef xHandler );
     104             : 
     105           0 :     inline bool         empty() const { return maStack.empty(); }
     106             : 
     107             :     sal_Int32           getCurrentRecId() const;
     108             :     bool                hasCurrentEndRecId() const;
     109             :     ContextHandlerRef   getCurrentContext() const;
     110             : 
     111             :     void                pushContext( const RecordInfo& rRec, const ContextHandlerRef& rxContext );
     112             :     void                popContext();
     113             : 
     114             : private:
     115             :     typedef ::std::pair< RecordInfo, ContextHandlerRef >    ContextInfo;
     116             :     typedef ::std::vector< ContextInfo >                    ContextInfoVec;
     117             : 
     118             :     FragmentHandlerRef  mxHandler;
     119             :     ContextInfoVec      maStack;
     120             : };
     121             : 
     122             : // ----------------------------------------------------------------------------
     123             : 
     124           0 : ContextStack::ContextStack( FragmentHandlerRef xHandler ) :
     125           0 :     mxHandler( xHandler )
     126             : {
     127           0 : }
     128             : 
     129           0 : sal_Int32 ContextStack::getCurrentRecId() const
     130             : {
     131           0 :     return maStack.empty() ? -1 : maStack.back().first.mnStartRecId;
     132             : }
     133             : 
     134           0 : bool ContextStack::hasCurrentEndRecId() const
     135             : {
     136           0 :     return !maStack.empty() && (maStack.back().first.mnEndRecId >= 0);
     137             : }
     138             : 
     139           0 : ContextHandlerRef ContextStack::getCurrentContext() const
     140             : {
     141           0 :     if( !maStack.empty() )
     142           0 :         return maStack.back().second;
     143           0 :     return mxHandler.get();
     144             : }
     145             : 
     146           0 : void ContextStack::pushContext( const RecordInfo& rRecInfo, const ContextHandlerRef& rxContext )
     147             : {
     148             :     OSL_ENSURE( (rRecInfo.mnEndRecId >= 0) || maStack.empty() || hasCurrentEndRecId(),
     149             :         "ContextStack::pushContext - nested incomplete context record identifiers" );
     150           0 :     maStack.push_back( ContextInfo( rRecInfo, rxContext ) );
     151           0 : }
     152             : 
     153           0 : void ContextStack::popContext()
     154             : {
     155             :     OSL_ENSURE( !maStack.empty(), "ContextStack::popContext - no context on stack" );
     156           0 :     if( !maStack.empty() )
     157             :     {
     158           0 :         ContextInfo& rContextInfo = maStack.back();
     159           0 :         if( rContextInfo.second.is() )
     160           0 :             rContextInfo.second->endRecord( rContextInfo.first.mnStartRecId );
     161           0 :         maStack.pop_back();
     162             :     }
     163           0 : }
     164             : 
     165             : } // namespace prv
     166             : 
     167             : // ============================================================================
     168             : 
     169             : namespace {
     170             : 
     171             : /** Reads a byte from the passed stream, returns true on success. */
     172           0 : inline bool lclReadByte( sal_uInt8& ornByte, BinaryInputStream& rStrm )
     173             : {
     174           0 :     return rStrm.readMemory( &ornByte, 1 ) == 1;
     175             : }
     176             : 
     177             : /** Reads a compressed signed 32-bit integer from the passed stream. */
     178           0 : bool lclReadCompressedInt( sal_Int32& ornValue, BinaryInputStream& rStrm )
     179             : {
     180           0 :     ornValue = 0;
     181             :     sal_uInt8 nByte;
     182           0 :     if( !lclReadByte( nByte, rStrm ) ) return false;
     183           0 :     ornValue = nByte & 0x7F;
     184           0 :     if( (nByte & 0x80) == 0 ) return true;
     185           0 :     if( !lclReadByte( nByte, rStrm ) ) return false;
     186           0 :     ornValue |= sal_Int32( nByte & 0x7F ) << 7;
     187           0 :     if( (nByte & 0x80) == 0 ) return true;
     188           0 :     if( !lclReadByte( nByte, rStrm ) ) return false;
     189           0 :     ornValue |= sal_Int32( nByte & 0x7F ) << 14;
     190           0 :     if( (nByte & 0x80) == 0 ) return true;
     191           0 :     if( !lclReadByte( nByte, rStrm ) ) return false;
     192           0 :     ornValue |= sal_Int32( nByte & 0x7F ) << 21;
     193           0 :     return true;
     194             : }
     195             : 
     196           0 : bool lclReadRecordHeader( sal_Int32& ornRecId, sal_Int32& ornRecSize, BinaryInputStream& rStrm )
     197             : {
     198             :     return
     199           0 :         lclReadCompressedInt( ornRecId, rStrm ) && (ornRecId >= 0) &&
     200           0 :         lclReadCompressedInt( ornRecSize, rStrm ) && (ornRecSize >= 0);
     201             : }
     202             : 
     203           0 : bool lclReadNextRecord( sal_Int32& ornRecId, StreamDataSequence& orData, BinaryInputStream& rStrm )
     204             : {
     205           0 :     sal_Int32 nRecSize = 0;
     206           0 :     bool bValid = lclReadRecordHeader( ornRecId, nRecSize, rStrm );
     207           0 :     if( bValid )
     208             :     {
     209           0 :         orData.realloc( nRecSize );
     210           0 :         bValid = (nRecSize == 0) || (rStrm.readData( orData, nRecSize ) == nRecSize);
     211             :     }
     212           0 :     return bValid;
     213             : }
     214             : 
     215             : } // namespace
     216             : 
     217             : // ============================================================================
     218             : 
     219           0 : RecordParser::RecordParser()
     220             : {
     221           0 :     mxLocator.set( new prv::Locator( this ) );
     222           0 : }
     223             : 
     224           0 : RecordParser::~RecordParser()
     225             : {
     226           0 :     if( mxLocator.is() )
     227           0 :         mxLocator->dispose();
     228           0 : }
     229             : 
     230           0 : void RecordParser::setFragmentHandler( const ::rtl::Reference< FragmentHandler >& rxHandler )
     231             : {
     232           0 :     mxHandler = rxHandler;
     233             : 
     234             :     // build record infos
     235           0 :     maStartMap.clear();
     236           0 :     maEndMap.clear();
     237           0 :     const RecordInfo* pRecs = mxHandler.is() ? mxHandler->getRecordInfos() : 0;
     238             :     OSL_ENSURE( pRecs, "RecordInfoProvider::RecordInfoProvider - missing record list" );
     239           0 :     for( ; pRecs && pRecs->mnStartRecId >= 0; ++pRecs )
     240             :     {
     241           0 :         maStartMap[ pRecs->mnStartRecId ] = *pRecs;
     242           0 :         if( pRecs->mnEndRecId >= 0 )
     243           0 :             maEndMap[ pRecs->mnEndRecId ] = *pRecs;
     244             :     }
     245           0 : }
     246             : 
     247           0 : void RecordParser::parseStream( const RecordInputSource& rInputSource ) throw( SAXException, IOException, RuntimeException )
     248             : {
     249           0 :     maSource = rInputSource;
     250             : 
     251           0 :     if( !maSource.mxInStream || maSource.mxInStream->isEof() )
     252           0 :         throw IOException();
     253           0 :     if( !mxHandler.is() )
     254           0 :         throw SAXException();
     255             : 
     256             :     // start the document
     257           0 :     Reference< XLocator > xLocator( mxLocator.get() );
     258           0 :     mxHandler->setDocumentLocator( xLocator );
     259           0 :     mxHandler->startDocument();
     260             : 
     261             :     // parse the stream
     262           0 :     mxStack.reset( new prv::ContextStack( mxHandler ) );
     263           0 :     sal_Int32 nRecId = 0;
     264           0 :     StreamDataSequence aRecData;
     265           0 :     while( lclReadNextRecord( nRecId, aRecData, *maSource.mxInStream ) )
     266             :     {
     267             :         // create record stream object from imported record data
     268           0 :         SequenceInputStream aRecStrm( aRecData );
     269             :         // try to leave a context, there may be other incomplete contexts on the stack
     270           0 :         if( const RecordInfo* pEndRecInfo = getEndRecordInfo( nRecId ) )
     271             :         {
     272             :             // finalize contexts without record identifier for context end
     273           0 :             while( !mxStack->empty() && !mxStack->hasCurrentEndRecId() )
     274           0 :                 mxStack->popContext();
     275             :             // finalize the current context and pop context info from stack
     276             :             OSL_ENSURE( mxStack->getCurrentRecId() == pEndRecInfo->mnStartRecId, "RecordParser::parseStream - context records mismatch" );
     277             :             (void)pEndRecInfo;  // suppress compiler warning for unused variable
     278           0 :             ContextHandlerRef xCurrContext = mxStack->getCurrentContext();
     279           0 :             if( xCurrContext.is() )
     280             :             {
     281             :                 // context end record may contain some data, handle it as simple record
     282           0 :                 aRecStrm.seekToStart();
     283           0 :                 xCurrContext->startRecord( nRecId, aRecStrm );
     284           0 :                 xCurrContext->endRecord( nRecId );
     285             :             }
     286           0 :             mxStack->popContext();
     287             :         }
     288             :         else
     289             :         {
     290             :             // end context with incomplete record id, if the same id comes again
     291           0 :             if( (mxStack->getCurrentRecId() == nRecId) && !mxStack->hasCurrentEndRecId() )
     292           0 :                 mxStack->popContext();
     293             :             // try to start a new context
     294           0 :             ContextHandlerRef xCurrContext = mxStack->getCurrentContext();
     295           0 :             if( xCurrContext.is() )
     296             :             {
     297           0 :                 aRecStrm.seekToStart();
     298           0 :                 xCurrContext = xCurrContext->createRecordContext( nRecId, aRecStrm );
     299             :             }
     300             :             // track all context identifiers on the stack (do not push simple records)
     301           0 :             const RecordInfo* pStartRecInfo = getStartRecordInfo( nRecId );
     302           0 :             if( pStartRecInfo )
     303           0 :                 mxStack->pushContext( *pStartRecInfo, xCurrContext );
     304             :             // import the record
     305           0 :             if( xCurrContext.is() )
     306             :             {
     307             :                 // import the record
     308           0 :                 aRecStrm.seekToStart();
     309           0 :                 xCurrContext->startRecord( nRecId, aRecStrm );
     310             :                 // end simple records (context records are finished in ContextStack::popContext)
     311           0 :                 if( !pStartRecInfo )
     312           0 :                     xCurrContext->endRecord( nRecId );
     313           0 :             }
     314             :         }
     315           0 :     }
     316             :     // close remaining contexts (missing context end records or stream error)
     317           0 :     while( !mxStack->empty() )
     318           0 :         mxStack->popContext();
     319           0 :     mxStack.reset();
     320             : 
     321             :     // finish document
     322           0 :     mxHandler->endDocument();
     323             : 
     324           0 :     maSource = RecordInputSource();
     325           0 : }
     326             : 
     327           0 : const RecordInfo* RecordParser::getStartRecordInfo( sal_Int32 nRecId ) const
     328             : {
     329           0 :     RecordInfoMap::const_iterator aIt = maStartMap.find( nRecId );
     330           0 :     return (aIt == maStartMap.end()) ? 0 : &aIt->second;
     331             : }
     332             : 
     333           0 : const RecordInfo* RecordParser::getEndRecordInfo( sal_Int32 nRecId ) const
     334             : {
     335           0 :     RecordInfoMap::const_iterator aIt = maEndMap.find( nRecId );
     336           0 :     return (aIt == maEndMap.end()) ? 0 : &aIt->second;
     337             : }
     338             : 
     339             : // ============================================================================
     340             : 
     341             : } // namespace core
     342             : } // namespace oox
     343             : 
     344             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

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