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         mxStorage = ::comphelper::OStorageHelper::GetStorageFromInputStream( rxInStream, rxFactory );
  67     }
  68     catch( Exception& )
  69     {
  70     }
  71 }
  72
  73 ZipStorage::ZipStorage(
  74         const Reference< XMultiServiceFactory >& rxFactory,
  75         const Reference< XStream >& rxStream ) :
  76     StorageBase( rxStream, false )
  77 {
  78     OSL_ENSURE( rxFactory.is(), "ZipStorage::ZipStorage - missing service factory" );
  79     // create base storage object
  80     try
  81     {
  82         mxStorage = ::comphelper::OStorageHelper::GetStorageOfFormatFromStream( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "OFOPXMLFormat" ) ),
  83                                                                                 rxStream,
  84                                                                                 com::sun::star::embed::ElementModes::READWRITE
  85                                                                                 | com::sun::star::embed::ElementModes::TRUNCATE,
  86                                                                                 rxFactory );
  87     }
  88     catch( Exception& )
  89     {
  90         OSL_ENSURE( false, "ZipStorage::ZipStorage - cannot open output storage" );
  91     }
  92 }
  93
  94 ZipStorage::ZipStorage( const ZipStorage& rParentStorage, const Reference< XStorage >& rxStorage, const OUString& rElementName ) :
  95     StorageBase( rParentStorage, rElementName ),
  96     mxStorage( rxStorage )
  97 {
  98     OSL_ENSURE( mxStorage.is(), "ZipStorage::ZipStorage - missing storage" );
  99 }
 100
 101 ZipStorage::~ZipStorage()
 102 {
 103 }
 104
 105 bool ZipStorage::implIsStorage() const
 106 {
 107     return mxStorage.is();
 108 }
 109
 110 Reference< XStorage > ZipStorage::implGetXStorage() const
 111 {
 112     return mxStorage;
 113 }
 114
 115 void ZipStorage::implGetElementNames( ::std::vector< OUString >& orElementNames ) const
 116 {
 117     Sequence< OUString > aNames;
 118     if( mxStorage.is() ) try
 119     {
 120         aNames = mxStorage->getElementNames();
 121         if( aNames.getLength() > 0 )
 122             orElementNames.insert( orElementNames.end(), aNames.getConstArray(), aNames.getConstArray() + aNames.getLength() );
 123     }
 124     catch( Exception& )
 125     {
 126     }
 127 }
 128
 129 StorageRef ZipStorage::implOpenSubStorage( const OUString& rElementName, bool bCreate )
 130 {
 131     Reference< XStorage > xSubXStorage;
 132     bool bMissing = false;
 133     if( mxStorage.is() ) try
 134     {
 135         // XStorage::isStorageElement may throw various exceptions...
 136         if( mxStorage->isStorageElement( rElementName ) )
 137             xSubXStorage = mxStorage->openStorageElement(
 138                 rElementName, ::com::sun::star::embed::ElementModes::READ );
 139     }
 140     catch( ::com::sun::star::container::NoSuchElementException& )
 141     {
 142         bMissing = true;
 143     }
 144     catch( Exception& )
 145     {
 146     }
 147
 148     if( bMissing && bCreate )
 149         try
 150         {
 151             xSubXStorage = mxStorage->openStorageElement(
 152                 rElementName, ::com::sun::star::embed::ElementModes::READWRITE );
 153         }
 154         catch( Exception& )
 155         {
 156         }
 157
 158     StorageRef xSubStorage;
 159     if( xSubXStorage.is() )
 160         xSubStorage.reset( new ZipStorage( *this, xSubXStorage, rElementName ) );
 161     return xSubStorage;
 162 }
 163
 164 Reference< XInputStream > ZipStorage::implOpenInputStream( const OUString& rElementName )
 165 {
 166     Reference< XInputStream > xInStream;
 167     if( mxStorage.is() ) try
 168     {
 169         xInStream.set( mxStorage->openStreamElement( rElementName, ::com::sun::star::embed::ElementModes::READ ), UNO_QUERY );
 170     }
 171     catch( Exception& )
 172     {
 173     }
 174     return xInStream;
 175 }
 176
 177 Reference< XOutputStream > ZipStorage::implOpenOutputStream( const OUString& rElementName )
 178 {
 179     Reference< XOutputStream > xOutStream;
 180     if( mxStorage.is() ) try
 181     {
 182         xOutStream.set( mxStorage->openStreamElement( rElementName, ::com::sun::star::embed::ElementModes::READWRITE ), UNO_QUERY );
 183     }
 184     catch( Exception& )
 185     {
 186     }
 187     return xOutStream;
 188 }
 189
 190 // ============================================================================
 191
 192 } // namespace oox
 193