sd/source/ui/unoidl/sddetect.cxx

   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 "sddetect.hxx"
  21
  22 #include <com/sun/star/lang/XMultiServiceFactory.hpp>
  23 #include <com/sun/star/beans/PropertyValue.hpp>
  24 #include <cppuhelper/supportsservice.hxx>
  25 #include <com/sun/star/container/XNameAccess.hpp>
  26 #include <com/sun/star/io/XInputStream.hpp>
  27 #include <com/sun/star/ucb/ContentCreationException.hpp>
  28 #include <com/sun/star/uno/XComponentContext.hpp>
  29 #include <vcl/graphicfilter.hxx>
  30 #include <rtl/ustring.h>
  31 #include <sfx2/docfile.hxx>
  32 #include <sfx2/docfilt.hxx>
  33 #include <sfx2/fcontnr.hxx>
  34 #include <vcl/FilterConfigItem.hxx>
  35 #include <sot/storage.hxx>
  36 #include <unotools/mediadescriptor.hxx>
  37
  38 using namespace ::com::sun::star;
  39 using namespace ::com::sun::star::uno;
  40 using namespace ::com::sun::star::io;
  41 using namespace ::com::sun::star::task;
  42 using namespace ::com::sun::star::beans;
  43 using namespace ::com::sun::star::lang;
  44 using utl::MediaDescriptor;
  45
  46 SdFilterDetect::SdFilterDetect()
  47 {
  48 }
  49
  50 SdFilterDetect::~SdFilterDetect()
  51 {
  52 }
  53
  54 OUString SAL_CALL SdFilterDetect::detect( Sequence< beans::PropertyValue >& lDescriptor )
  55 {
  56     MediaDescriptor aMediaDesc( lDescriptor );
  57     OUString aTypeName = aMediaDesc.getUnpackedValueOrDefault( MediaDescriptor::PROP_TYPENAME(), OUString() );
  58     uno::Reference< io::XInputStream > xInStream ( aMediaDesc[MediaDescriptor::PROP_INPUTSTREAM()], uno::UNO_QUERY );
  59     if ( !xInStream.is() )
  60         return OUString();
  61
  62     SfxMedium aMedium;
  63     aMedium.UseInteractionHandler( false );
  64     aMedium.setStreamToLoadFrom( xInStream, true );
  65
  66     SvStream *pInStrm = aMedium.GetInStream();
  67     if ( !pInStrm || pInStrm->GetError() )
  68         return OUString();
  69
  70     if ( aTypeName.startsWith( "impress_MS_PowerPoint_97" ) )
  71     {
  72         // Do not attempt to create an SotStorage on a
  73         // 0-length stream as that would create the compound
  74         // document header on the stream and effectively write to
  75         // disk!
  76         pInStrm->Seek( STREAM_SEEK_TO_BEGIN );
  77         if ( pInStrm->remainingSize() == 0 )
  78             return OUString();
  79
  80         try
  81         {
  82             tools::SvRef<SotStorage> aStorage = new SotStorage( pInStrm, false );
  83             if ( !aStorage->GetError() && aStorage->IsStream( "PowerPoint Document" ) )
  84                 return aTypeName;
  85         }
  86         catch (const css::ucb::ContentCreationException&)
  87         {
  88         }
  89     }
  90     else
  91     {
  92         pInStrm->Seek( STREAM_SEEK_TO_BEGIN );
  93
  94         const OUString aFileName( aMediaDesc.getUnpackedValueOrDefault( MediaDescriptor::PROP_URL(), OUString() ) );
  95         GraphicDescriptor aDesc( *pInStrm, &aFileName );
  96         if( !aDesc.Detect() )
  97         {
  98             INetURLObject aCheckURL( aFileName );
  99             if( aCheckURL.getExtension().equalsIgnoreAsciiCase("cgm") )
 100             {
 101                 sal_uInt8 n8;
 102                 pInStrm->Seek( STREAM_SEEK_TO_BEGIN );
 103                 pInStrm->ReadUChar( n8 );
 104                 if ( ( n8 & 0xf0 ) == 0 )
 105                     // we are supporting binary cgm format only, so
 106                     // this is a small test to exclude cgm text
 107                     return OUString("impress_CGM_Computer_Graphics_Metafile");
 108             }
 109         }
 110         else
 111         {
 112             OUString aShortName( GraphicDescriptor::GetImportFormatShortName( aDesc.GetFileFormat() ) );
 113             GraphicFilter &rGrfFilter = GraphicFilter::GetGraphicFilter();
 114             const OUString aName( rGrfFilter.GetImportFormatTypeName( rGrfFilter.GetImportFormatNumberForShortName( aShortName ) ) );
 115
 116             if ( aShortName.equalsIgnoreAsciiCase( "PCD" ) )    // there is a multiple pcd selection possible
 117             {
 118                 sal_Int32 nBase = 2;    // default Base0
 119                 if ( aTypeName == "pcd_Photo_CD_Base4" )
 120                     nBase = 1;
 121                 else if ( aTypeName == "pcd_Photo_CD_Base16" )
 122                     nBase = 0;
 123                 FilterConfigItem aFilterConfigItem( "Office.Common/Filter/Graphic/Import/PCD" );
 124                 aFilterConfigItem.WriteInt32( "Resolution" , nBase );
 125             }
 126
 127             SfxFilterMatcher aMatch("sdraw");
 128             std::shared_ptr<const SfxFilter> pFilter = aMatch.GetFilter4FilterName( aName );
 129             if ( pFilter )
 130                 return pFilter->GetRealTypeName();
 131         }
 132     }
 133
 134     return OUString();
 135 }
 136
 137 // XServiceInfo
 138 OUString SAL_CALL SdFilterDetect::getImplementationName()
 139 {
 140     return OUString( "com.sun.star.comp.draw.FormatDetector" );
 141 }
 142
 143 // XServiceInfo
 144 sal_Bool SAL_CALL SdFilterDetect::supportsService( const OUString& sServiceName )
 145 {
 146     return cppu::supportsService(this, sServiceName);
 147 }
 148
 149 // XServiceInfo
 150 Sequence< OUString > SAL_CALL SdFilterDetect::getSupportedServiceNames()
 151 {
 152     Sequence<OUString> seqServiceNames { "com.sun.star.frame.ExtendedTypeDetection" };
 153     return seqServiceNames ;
 154 }
 155
 156
 157 extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
 158 com_sun_star_comp_draw_FormatDetector_get_implementation(css::uno::XComponentContext*,
 159                                                          css::uno::Sequence<css::uno::Any> const &)
 160 {
 161     return cppu::acquire(new SdFilterDetect());
 162 }
 163
 164 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */