157 lines
5.4 KiB
C++
157 lines
5.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include "smdetect.hxx"
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#include <com/sun/star/lang/XMultiServiceFactory.hpp>
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#include <com/sun/star/beans/PropertyValue.hpp>
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#include <cppuhelper/supportsservice.hxx>
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#include <com/sun/star/io/XInputStream.hpp>
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#include <sfx2/docfile.hxx>
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#include <unotools/mediadescriptor.hxx>
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#include "eqnolefilehdr.hxx"
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using namespace ::com::sun::star;
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using namespace ::com::sun::star::uno;
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using namespace ::com::sun::star::io;
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using namespace ::com::sun::star::task;
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using namespace ::com::sun::star::beans;
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using namespace ::com::sun::star::lang;
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using utl::MediaDescriptor;
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SmFilterDetect::SmFilterDetect( const Reference < XMultiServiceFactory >& /*xFactory*/ )
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{
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}
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SmFilterDetect::~SmFilterDetect()
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{
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}
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OUString SAL_CALL SmFilterDetect::detect( Sequence< PropertyValue >& lDescriptor ) throw( RuntimeException, std::exception )
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{
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MediaDescriptor aMediaDesc( lDescriptor );
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uno::Reference< io::XInputStream > xInStream ( aMediaDesc[MediaDescriptor::PROP_INPUTSTREAM()], uno::UNO_QUERY );
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if ( !xInStream.is() )
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return OUString();
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SfxMedium aMedium;
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aMedium.UseInteractionHandler( false );
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aMedium.setStreamToLoadFrom( xInStream, true );
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SvStream *pInStrm = aMedium.GetInStream();
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if ( !pInStrm || pInStrm->GetError() )
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return OUString();
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// Do not attempt to create an SotStorage on a
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// 0-length stream as that would create the compound
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// document header on the stream and effectively write to
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// disk!
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pInStrm->Seek( STREAM_SEEK_TO_BEGIN );
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if ( pInStrm->remainingSize() == 0 )
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return OUString();
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bool bStorageOk = false;
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try
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{
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tools::SvRef<SotStorage> aStorage = new SotStorage( pInStrm, false );
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bStorageOk = !aStorage->GetError();
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if (bStorageOk)
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{
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if ( aStorage->IsStream("Equation Native") )
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{
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sal_uInt8 nVersion;
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if ( GetMathTypeVersion( aStorage, nVersion ) && nVersion <=3 )
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return OUString("math_MathType_3x");
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}
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}
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}
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catch (const css::ucb::ContentCreationException &e)
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{
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SAL_WARN("starmath", "SmFilterDetect::detect caught " << e.Message);
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}
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if (!bStorageOk)
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{
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// 200 should be enough for the XML
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// version, encoding and !DOCTYPE
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// stuff I hope?
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static const sal_uInt16 nBufferSize = 200;
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char aBuffer[nBufferSize+1];
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aBuffer[nBufferSize] = 0;
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pInStrm->Seek( STREAM_SEEK_TO_BEGIN );
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pInStrm->StartReadingUnicodeText( RTL_TEXTENCODING_DONTKNOW ); // avoid BOM marker
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sal_uLong nBytesRead = pInStrm->Read( aBuffer, nBufferSize );
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if (nBytesRead >= 6)
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{
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bool bIsMathType = false;
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if (0 == strncmp( "<?xml", aBuffer, 5))
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bIsMathType = (strstr( aBuffer, "<math>" ) ||
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strstr( aBuffer, "<math " ) ||
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strstr( aBuffer, "<math:math " ));
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else
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// this is the old <math tag to MathML in the beginning of the XML file
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bIsMathType = (0 == strncmp( "<math ", aBuffer, 6) ||
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0 == strncmp( "<math> ", aBuffer, 7) ||
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0 == strncmp( "<math:math> ", aBuffer, 12));
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if ( bIsMathType )
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return OUString("math_MathML_XML_Math");
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}
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}
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return OUString();
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}
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/* XServiceInfo */
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OUString SAL_CALL SmFilterDetect::getImplementationName() throw( RuntimeException, std::exception )
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{
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return impl_getStaticImplementationName();
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}
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/* XServiceInfo */
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sal_Bool SAL_CALL SmFilterDetect::supportsService( const OUString& sServiceName ) throw( RuntimeException, std::exception )
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{
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return cppu::supportsService(this, sServiceName);
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}
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/* XServiceInfo */
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Sequence< OUString > SAL_CALL SmFilterDetect::getSupportedServiceNames() throw( RuntimeException, std::exception )
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{
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return impl_getStaticSupportedServiceNames();
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}
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/* Helper for XServiceInfo */
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Sequence< OUString > SmFilterDetect::impl_getStaticSupportedServiceNames()
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{
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return Sequence< OUString >{ "com.sun.star.frame.ExtendedTypeDetection" };
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}
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/* Helper for XServiceInfo */
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OUString SmFilterDetect::impl_getStaticImplementationName()
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{
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return OUString("com.sun.star.comp.math.FormatDetector");
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}
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/* Helper for registry */
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Reference< XInterface > SAL_CALL SmFilterDetect::impl_createInstance( const Reference< XMultiServiceFactory >& xServiceManager ) throw( Exception )
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{
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return Reference< XInterface >( *new SmFilterDetect( xServiceManager ) );
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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