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