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