oox/source/helper/zipstorage.cxx

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  30
  31 #include "oox/helper/zipstorage.hxx"
  32 #include <com/sun/star/container/XHierarchicalNameAccess.hpp>
  33 #include <com/sun/star/lang/XMultiServiceFactory.hpp>
  34 #include <com/sun/star/embed/XStorage.hpp>
  35 #include <com/sun/star/embed/ElementModes.hpp>
  36 #include <com/sun/star/io/XInputStream.hpp>
  37 #include <com/sun/star/io/XOutputStream.hpp>
  38 #include <comphelper/storagehelper.hxx>
  39 #include "oox/helper/helper.hxx"
  40
  41 using ::rtl::OUString;
  42 using ::com::sun::star::uno::Any;
  43 using ::com::sun::star::uno::Reference;
  44 using ::com::sun::star::uno::Sequence;
  45 using ::com::sun::star::uno::Exception;
  46 using ::com::sun::star::uno::UNO_QUERY;
  47 using ::com::sun::star::lang::XMultiServiceFactory;
  48 using ::com::sun::star::embed::XStorage;
  49 using ::com::sun::star::io::XInputStream;
  50 using ::com::sun::star::io::XOutputStream;
  51 using ::com::sun::star::io::XStream;
  52
  53 namespace oox {
  54
  55 // ============================================================================
  56
  57 ZipStorage::ZipStorage(
  58         const Reference< XMultiServiceFactory >& rxFactory,
  59         const Reference< XInputStream >& rxInStream ) :
  60     StorageBase( rxInStream, false )
  61 {
  62     OSL_ENSURE( rxFactory.is(), "ZipStorage::ZipStorage - missing service factory" );
  63     // create base storage object
  64     try
  65     {
  66         /*  #i105325# ::comphelper::OStorageHelper::GetStorageFromInputStream()
  67             cannot be used here as it will open a storage with format type
  68             'PackageFormat' that will not work with OOXML packages.
  69             TODO: #i105410# switch to 'OFOPXMLFormat' and use its
  70             implementation of relations handling. */
  71         mxStorage = ::comphelper::OStorageHelper::GetStorageOfFormatFromInputStream(
  72             ZIP_STORAGE_FORMAT_STRING, rxInStream, rxFactory );
  73     }
  74     catch( Exception& )
  75     {
  76     }
  77 }
  78
  79 ZipStorage::ZipStorage(
  80         const Reference< XMultiServiceFactory >& rxFactory,
  81         const Reference< XStream >& rxStream ) :
  82     StorageBase( rxStream, false )
  83 {
  84     OSL_ENSURE( rxFactory.is(), "ZipStorage::ZipStorage - missing service factory" );
  85     // create base storage object
  86     try
  87     {
  88         using namespace ::com::sun::star::embed::ElementModes;
  89         mxStorage = ::comphelper::OStorageHelper::GetStorageOfFormatFromStream(
  90             OFOPXML_STORAGE_FORMAT_STRING, rxStream, READWRITE | TRUNCATE, rxFactory );
  91     }
  92     catch( Exception& )
  93     {
  94         OSL_ENSURE( false, "ZipStorage::ZipStorage - cannot open output storage" );
  95     }
  96 }
  97
  98 ZipStorage::ZipStorage( const ZipStorage& rParentStorage, const Reference< XStorage >& rxStorage, const OUString& rElementName ) :
  99     StorageBase( rParentStorage, rElementName ),
 100     mxStorage( rxStorage )
 101 {
 102     OSL_ENSURE( mxStorage.is(), "ZipStorage::ZipStorage - missing storage" );
 103 }
 104
 105 ZipStorage::~ZipStorage()
 106 {
 107 }
 108
 109 bool ZipStorage::implIsStorage() const
 110 {
 111     return mxStorage.is();
 112 }
 113
 114 Reference< XStorage > ZipStorage::implGetXStorage() const
 115 {
 116     return mxStorage;
 117 }
 118
 119 void ZipStorage::implGetElementNames( ::std::vector< OUString >& orElementNames ) const
 120 {
 121     Sequence< OUString > aNames;
 122     if( mxStorage.is() ) try
 123     {
 124         aNames = mxStorage->getElementNames();
 125         if( aNames.getLength() > 0 )
 126             orElementNames.insert( orElementNames.end(), aNames.getConstArray(), aNames.getConstArray() + aNames.getLength() );
 127     }
 128     catch( Exception& )
 129     {
 130     }
 131 }
 132
 133 StorageRef ZipStorage::implOpenSubStorage( const OUString& rElementName, bool bCreate )
 134 {
 135     Reference< XStorage > xSubXStorage;
 136     bool bMissing = false;
 137     if( mxStorage.is() ) try
 138     {
 139         // XStorage::isStorageElement may throw various exceptions...
 140         if( mxStorage->isStorageElement( rElementName ) )
 141             xSubXStorage = mxStorage->openStorageElement(
 142                 rElementName, ::com::sun::star::embed::ElementModes::READ );
 143     }
 144     catch( ::com::sun::star::container::NoSuchElementException& )
 145     {
 146         bMissing = true;
 147     }
 148     catch( Exception& )
 149     {
 150     }
 151
 152     if( bMissing && bCreate )
 153         try
 154         {
 155             xSubXStorage = mxStorage->openStorageElement(
 156                 rElementName, ::com::sun::star::embed::ElementModes::READWRITE );
 157         }
 158         catch( Exception& )
 159         {
 160         }
 161
 162     StorageRef xSubStorage;
 163     if( xSubXStorage.is() )
 164         xSubStorage.reset( new ZipStorage( *this, xSubXStorage, rElementName ) );
 165     return xSubStorage;
 166 }
 167
 168 Reference< XInputStream > ZipStorage::implOpenInputStream( const OUString& rElementName )
 169 {
 170     Reference< XInputStream > xInStream;
 171     if( mxStorage.is() ) try
 172     {
 173         xInStream.set( mxStorage->openStreamElement( rElementName, ::com::sun::star::embed::ElementModes::READ ), UNO_QUERY );
 174     }
 175     catch( Exception& )
 176     {
 177     }
 178     return xInStream;
 179 }
 180
 181 Reference< XOutputStream > ZipStorage::implOpenOutputStream( const OUString& rElementName )
 182 {
 183     Reference< XOutputStream > xOutStream;
 184     if( mxStorage.is() ) try
 185     {
 186         xOutStream.set( mxStorage->openStreamElement( rElementName, ::com::sun::star::embed::ElementModes::READWRITE ), UNO_QUERY );
 187     }
 188     catch( Exception& )
 189     {
 190     }
 191     return xOutStream;
 192 }
 193
 194 // ============================================================================
 195
 196 } // namespace oox
 197