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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 "filterdetect.hxx"
#include <osl/diagnose.h>
#include <com/sun/star/io/XInputStream.hpp>
#include <com/sun/star/uno/XComponentContext.hpp>
#include <com/sun/star/document/XExtendedFilterDetection.hpp>
#include <com/sun/star/container/XNameAccess.hpp>
#include <com/sun/star/beans/PropertyState.hpp>
#include <cppuhelper/supportsservice.hxx>
#include <ucbhelper/content.hxx>
#include <unotools/ucbstreamhelper.hxx>
#include <boost/scoped_ptr.hpp>
using namespace com::sun::star::container;
using namespace com::sun::star::uno;
using namespace com::sun::star::beans;
namespace {
OUString supportedByType( const OUString& clipBoardFormat, const OUString& resultString, const OUString& checkType)
{
OUString sTypeName;
if ( clipBoardFormat.match("doctype:") )
{
OUString tryStr = clipBoardFormat.copy(8);
if (resultString.indexOf(tryStr) >= 0)
{
sTypeName = checkType;
}
}
return sTypeName;
}
}
OUString SAL_CALL FilterDetect::detect( com::sun::star::uno::Sequence< com::sun::star::beans::PropertyValue >& aArguments ) throw( com::sun::star::uno::RuntimeException, std::exception )
{
OUString sTypeName;
OUString sUrl;
Sequence<PropertyValue > lProps ;
com::sun::star::uno::Reference< com::sun::star::io::XInputStream > xInStream;
const PropertyValue * pValue = aArguments.getConstArray();
sal_Int32 nLength;
OUString resultString;
nLength = aArguments.getLength();
sal_Int32 location=nLength;
for (sal_Int32 i = 0 ; i < nLength; i++)
{
if ( pValue[i].Name == "TypeName" )
{
location=i;
}
else if ( pValue[i].Name == "URL" )
{
pValue[i].Value >>= sUrl;
}
else if ( pValue[i].Name == "InputStream" )
{
pValue[i].Value >>= xInStream ;
}
}
try
{
if (!xInStream.is())
{
::ucbhelper::Content aContent(
sUrl, Reference< com::sun::star::ucb::XCommandEnvironment >(),
mxCtx);
xInStream = aContent.openStream();
if (!xInStream.is())
{
return sTypeName;
}
}
::boost::scoped_ptr< SvStream > pInStream( ::utl::UcbStreamHelper::CreateStream( xInStream ) );
pInStream->StartReadingUnicodeText( RTL_TEXTENCODING_DONTKNOW );
sal_Size nUniPos = pInStream->Tell();
const sal_uInt16 nSize = 4000;
bool bTryUtf16 = false;
if ( nUniPos == 0 ) // No BOM detected, try to guess UTF-16 endianness
{
sal_uInt16 nHeader = 0;
pInStream->ReadUInt16( nHeader );
if ( nHeader == 0x003C )
bTryUtf16 = true;
else if ( nHeader == 0x3C00 )
{
bTryUtf16 = true;
pInStream->SetEndianSwap( !pInStream->IsEndianSwap() );
}
pInStream->Seek( STREAM_SEEK_TO_BEGIN );
}
if ( nUniPos == 3 || ( nUniPos == 0 && !bTryUtf16 ) ) // UTF-8 or non-Unicode
resultString = OUString::fromUtf8( read_uInt8s_ToOString( *pInStream, nSize ) );
else if ( nUniPos == 2 || bTryUtf16 ) // UTF-16
resultString = read_uInt16s_ToOUString( *pInStream, nSize );
if ( !resultString.startsWith( "<?xml" ) )
// This is not an XML stream. It makes no sense to try to detect
// a non-XML file type here.
return OUString();
// test typedetect code
Reference <XNameAccess> xTypeCont(mxCtx->getServiceManager()->createInstanceWithContext("com.sun.star.document.TypeDetection", mxCtx), UNO_QUERY);
Sequence < OUString > myTypes= xTypeCont->getElementNames();
nLength = myTypes.getLength();
sal_Int32 new_nlength=0;
sal_Int32 i = 0 ;
while ((i < nLength) && (sTypeName.isEmpty()))
{
Any elem = xTypeCont->getByName(myTypes[i]);
elem >>=lProps;
new_nlength = lProps.getLength();
sal_Int32 j =0;
while (j < new_nlength && (sTypeName.isEmpty()))
{
OUString tmpStr;
lProps[j].Value >>=tmpStr;
if ( lProps[j].Name == "ClipboardFormat" && !tmpStr.isEmpty() )
{
sTypeName = supportedByType(tmpStr,resultString, myTypes[i]);
}
j++;
}
i++;
}
}
catch (const Exception &)
{
OSL_FAIL( "An Exception occurred while opening File stream" );
}
if (!sTypeName.isEmpty())
{
if (location == aArguments.getLength())
{
aArguments.realloc(nLength+1);
aArguments[location].Name = "TypeName";
}
aArguments[location].Value <<=sTypeName;
}
return sTypeName;
}
// XInitialization
void SAL_CALL FilterDetect::initialize( const Sequence< Any >& /*aArguments*/ )
throw (Exception, RuntimeException, std::exception)
{
}
OUString FilterDetect_getImplementationName ()
{
return OUString( "com.sun.star.comp.filters.XMLFilterDetect" );
}
Sequence< OUString > FilterDetect_getSupportedServiceNames()
{
Sequence < OUString > aRet(1);
aRet[0] = "com.sun.star.document.ExtendedTypeDetection";
return aRet;
}
Reference< XInterface > FilterDetect_createInstance( const Reference< XComponentContext > & context)
{
return static_cast< cppu::OWeakObject * >( new FilterDetect( context ) );
}
// XServiceInfo
OUString SAL_CALL FilterDetect::getImplementationName( )
throw (RuntimeException, std::exception)
{
return FilterDetect_getImplementationName();
}
sal_Bool SAL_CALL FilterDetect::supportsService( const OUString& rServiceName )
throw (RuntimeException, std::exception)
{
return cppu::supportsService( this, rServiceName );
}
Sequence< OUString > SAL_CALL FilterDetect::getSupportedServiceNames( )
throw (RuntimeException, std::exception)
{
return FilterDetect_getSupportedServiceNames();
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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