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office-gobmx/starmath/source/smdetect.cxx
Marcos Paulo de Souza 05530423d3 Solve one more issue of fdo#59642 
The old MathML XML style could begin just with <math. So this commit fixes that.

This commits also fixes some documents that have the BOM marker at begin of file.

Thanks a lot to Bjoern, Caolan and Eike!

Change-Id: Ia2c3b51556e615c1e68e5e8aab4f883124c6adca
Reviewed-on: https://gerrit.libreoffice.org/4742
Reviewed-by: Björn Michaelsen <bjoern.michaelsen@canonical.com>
Tested-by: Björn Michaelsen <bjoern.michaelsen@canonical.com>
2013-07-05 21:56:41 +00:00

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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 <com/sun/star/lang/XMultiServiceFactory.hpp>
#include <com/sun/star/beans/PropertyValue.hpp>
#include <com/sun/star/frame/XFrame.hpp>
#include <com/sun/star/frame/XModel.hpp>
#include <com/sun/star/awt/XWindow.hpp>
#include <com/sun/star/lang/XUnoTunnel.hpp>
#include <comphelper/processfactory.hxx>
#include <com/sun/star/io/XInputStream.hpp>
#include <com/sun/star/task/XInteractionHandler.hpp>
#include <com/sun/star/lang/WrappedTargetRuntimeException.hpp>
#include <com/sun/star/ucb/CommandAbortedException.hpp>
#include <com/sun/star/ucb/InteractiveAppException.hpp>
#include <com/sun/star/ucb/XContent.hpp>
#include <com/sun/star/packages/zip/ZipIOException.hpp>
#include <toolkit/helper/vclunohelper.hxx>
#include <ucbhelper/simpleinteractionrequest.hxx>
#include <rtl/ustring.h>
#include <rtl/logfile.hxx>
#include <svl/itemset.hxx>
#include <vcl/window.hxx>
#include <svl/eitem.hxx>
#include <svl/stritem.hxx>
#include <tools/urlobj.hxx>
#include <osl/mutex.hxx>
#include <svtools/sfxecode.hxx>
#include <svtools/ehdl.hxx>
#include <sot/storinfo.hxx>
#include <vcl/svapp.hxx>
#include <sfx2/app.hxx>
#include <sfx2/sfxsids.hrc>
#include <sfx2/request.hxx>
#include <sfx2/docfile.hxx>
#include <sfx2/docfilt.hxx>
#include <sfx2/fcontnr.hxx>
#include <sfx2/brokenpackageint.hxx>
#include "document.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::frame;
using namespace ::com::sun::star::task;
using namespace ::com::sun::star::beans;
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::ucb;
SmFilterDetect::SmFilterDetect( const Reference < XMultiServiceFactory >& /*xFactory*/ )
{
}
SmFilterDetect::~SmFilterDetect()
{
}
OUString SAL_CALL SmFilterDetect::detect( Sequence< PropertyValue >& lDescriptor ) throw( RuntimeException )
{
Reference< XInputStream > xStream;
Reference< XContent > xContent;
Reference< XInteractionHandler > xInteraction;
String aURL;
OUString sTemp;
String aTypeName; // a name describing the type (from MediaDescriptor, usually from flat detection)
String aPreselectedFilterName; // a name describing the filter to use (from MediaDescriptor, usually from UI action)
OUString aDocumentTitle; // interesting only if set in this method
// opening as template is done when a parameter tells to do so and a template filter can be detected
// (otherwise no valid filter would be found) or if the detected filter is a template filter and
// there is no parameter that forbids to open as template
sal_Bool bOpenAsTemplate = sal_False;
sal_Bool bWasReadOnly = sal_False, bReadOnly = sal_False;
sal_Bool bRepairPackage = sal_False;
sal_Bool bRepairAllowed = sal_False;
bool bDeepDetection = false;
// now some parameters that can already be in the array, but may be overwritten or new inserted here
// remember their indices in the case new values must be added to the array
sal_Int32 nPropertyCount = lDescriptor.getLength();
sal_Int32 nIndexOfInputStream = -1;
sal_Int32 nIndexOfContent = -1;
sal_Int32 nIndexOfReadOnlyFlag = -1;
sal_Int32 nIndexOfTemplateFlag = -1;
sal_Int32 nIndexOfDocumentTitle = -1;
for( sal_Int32 nProperty=0; nProperty<nPropertyCount; ++nProperty )
{
// extract properties
if( lDescriptor[nProperty].Name == "URL" )
{
lDescriptor[nProperty].Value >>= sTemp;
aURL = sTemp;
}
else if( !aURL.Len() && lDescriptor[nProperty].Name == "FileName" )
{
lDescriptor[nProperty].Value >>= sTemp;
aURL = sTemp;
}
else if( lDescriptor[nProperty].Name == "TypeName" )
{
lDescriptor[nProperty].Value >>= sTemp;
aTypeName = sTemp;
}
else if( lDescriptor[nProperty].Name == "FilterName" )
{
lDescriptor[nProperty].Value >>= sTemp;
aPreselectedFilterName = sTemp;
}
else if( lDescriptor[nProperty].Name == "InputStream" )
nIndexOfInputStream = nProperty;
else if( lDescriptor[nProperty].Name == "ReadOnly" )
nIndexOfReadOnlyFlag = nProperty;
else if( lDescriptor[nProperty].Name == "UCBContent" )
nIndexOfContent = nProperty;
else if( lDescriptor[nProperty].Name == "AsTemplate" )
{
lDescriptor[nProperty].Value >>= bOpenAsTemplate;
nIndexOfTemplateFlag = nProperty;
}
else if( lDescriptor[nProperty].Name == "InteractionHandler" )
lDescriptor[nProperty].Value >>= xInteraction;
else if( lDescriptor[nProperty].Name == "RepairPackage" )
lDescriptor[nProperty].Value >>= bRepairPackage;
else if( lDescriptor[nProperty].Name == "DocumentTitle" )
nIndexOfDocumentTitle = nProperty;
else if (lDescriptor[nProperty].Name == "DeepDetection")
bDeepDetection = lDescriptor[nProperty].Value.get<sal_Bool>();
}
// can't check the type for external filters, so set the "dont" flag accordingly
SolarMutexGuard aGuard;
SfxApplication* pApp = SFX_APP();
SfxAllItemSet *pSet = new SfxAllItemSet( pApp->GetPool() );
TransformParameters( SID_OPENDOC, lDescriptor, *pSet );
SFX_ITEMSET_ARG( pSet, pItem, SfxBoolItem, SID_DOC_READONLY, sal_False );
bWasReadOnly = pItem && pItem->GetValue();
String aFilterName;
String aPrefix = OUString( "private:factory/" );
if( aURL.Match( aPrefix ) == aPrefix.Len() )
{
const SfxFilter* pFilter = 0;
String aPattern( aPrefix );
aPattern += OUString("smath");
if ( aURL.Match( aPattern ) >= aPattern.Len() )
{
pFilter = SfxFilter::GetDefaultFilterFromFactory( aURL );
aTypeName = pFilter->GetTypeName();
aFilterName = pFilter->GetName();
}
}
else
{
// ctor of SfxMedium uses owner transition of ItemSet
SfxMedium aMedium( aURL, bWasReadOnly ? STREAM_STD_READ : STREAM_STD_READWRITE, NULL, pSet );
aMedium.UseInteractionHandler( true );
bool bIsStorage = aMedium.IsStorage();
if ( aMedium.GetErrorCode() == ERRCODE_NONE )
{
// remember input stream and content and put them into the descriptor later
// should be done here since later the medium can switch to a version
xStream = aMedium.GetInputStream();
xContent = aMedium.GetContent();
bReadOnly = aMedium.IsReadOnly();
if ( bIsStorage )
{
//TODO/LATER: factor this out!
Reference < embed::XStorage > xStorage = aMedium.GetStorage( sal_False );
if ( aMedium.GetLastStorageCreationState() != ERRCODE_NONE )
{
// error during storage creation means _here_ that the medium
// is broken, but we can not handle it in medium since unpossibility
// to create a storage does not _always_ means that the medium is broken
aMedium.SetError( aMedium.GetLastStorageCreationState(), OSL_LOG_PREFIX );
if ( xInteraction.is() )
{
OUString empty;
try
{
InteractiveAppException xException( empty,
Reference< XInterface >(),
InteractionClassification_ERROR,
aMedium.GetError() );
Reference< XInteractionRequest > xRequest(
new ucbhelper::SimpleInteractionRequest( makeAny( xException ),
ucbhelper::CONTINUATION_APPROVE ) );
xInteraction->handle( xRequest );
}
catch ( Exception & ) {};
}
}
else
{
aFilterName.Erase();
try
{
const SfxFilter* pFilter = aPreselectedFilterName.Len() ?
SfxFilterMatcher().GetFilter4FilterName( aPreselectedFilterName ) : aTypeName.Len() ?
SfxFilterMatcher(OUString("smath")).GetFilter4EA( aTypeName ) : 0;
OUString aTmpFilterName;
if ( pFilter )
aTmpFilterName = pFilter->GetName();
aTypeName = SfxFilter::GetTypeFromStorage( xStorage, pFilter ? pFilter->IsAllowedAsTemplate() : sal_False, &aTmpFilterName );
}
catch( const WrappedTargetException& aWrap )
{
if (!bDeepDetection)
// Bail out early unless it's a deep detection.
return OUString();
packages::zip::ZipIOException aZipException;
// repairing is done only if this type is requested from outside
if ( ( aWrap.TargetException >>= aZipException ) && aTypeName.Len() )
{
if ( xInteraction.is() )
{
// the package is broken one
aDocumentTitle = aMedium.GetURLObject().getName(
INetURLObject::LAST_SEGMENT,
true,
INetURLObject::DECODE_WITH_CHARSET );
if ( !bRepairPackage )
{
// ask the user whether he wants to try to repair
RequestPackageReparation aRequest( aDocumentTitle );
xInteraction->handle( aRequest.GetRequest() );
bRepairAllowed = aRequest.isApproved();
}
if ( !bRepairAllowed )
{
// repair either not allowed or not successful
NotifyBrokenPackage aNotifyRequest( aDocumentTitle );
xInteraction->handle( aNotifyRequest.GetRequest() );
}
}
if ( !bRepairAllowed )
aTypeName.Erase();
}
}
catch( RuntimeException& )
{
throw;
}
catch( Exception& )
{
aTypeName.Erase();
}
if ( aTypeName.Len() )
{
const SfxFilter* pFilter =
SfxFilterMatcher( OUString("smath") ).GetFilter4EA( aTypeName );
if ( pFilter )
aFilterName = pFilter->GetName();
}
}
}
else
{
//Test to see if this begins with xml and if so run it through
//the MathML filter. There are all sorts of things wrong with
//this approach, to be fixed at a better level than here
SvStream *pStrm = aMedium.GetInStream();
aTypeName.Erase();
if (pStrm && !pStrm->GetError())
{
SotStorageRef aStorage = new SotStorage ( pStrm, sal_False );
if ( !aStorage->GetError() )
{
if (aStorage->IsStream(OUString("Equation Native")))
{
sal_uInt8 nVersion;
if (GetMathTypeVersion( aStorage, nVersion ) && nVersion <=3)
aTypeName.AssignAscii( "math_MathType_3x" );
}
}
else
{
// 200 should be enough for the XML
// version, encoding and !DOCTYPE
// stuff I hope?
const sal_uInt16 nSize = 200;
sal_Char aBuffer[nSize+1];
aBuffer[nSize] = 0;
pStrm->Seek( STREAM_SEEK_TO_BEGIN );
pStrm->StartReadingUnicodeText(RTL_TEXTENCODING_DONTKNOW); // avoid BOM marker
sal_uLong nBytesRead = pStrm->Read( aBuffer, nSize );
if (nBytesRead >= 6)
{
bool bIsMathType = false;
if (0 == strncmp( "<?xml", aBuffer, 5))
{
if (strstr( aBuffer, "<math>" ) ||
strstr( aBuffer, "<math " ) ||
strstr( aBuffer, "<math:math " ))
bIsMathType = true;
}
// this is the old <math tag to MathML in the beginning of the XML file
else if (0 == strncmp( "<math ", aBuffer, 6) ||
0 == strncmp( "<math> ", aBuffer, 7) ||
0 == strncmp( "<math:math> ", aBuffer, 12))
bIsMathType = true;
if (bIsMathType){
static const sal_Char sFltrNm_2[] = MATHML_XML;
static const sal_Char sTypeNm_2[] = "math_MathML_XML_Math";
aFilterName.AssignAscii( sFltrNm_2 );
aTypeName.AssignAscii( sTypeNm_2 );
}
}
}
if ( aTypeName.Len() )
{
const SfxFilter* pFilt = SfxFilterMatcher( OUString("smath") ).GetFilter4EA( aTypeName );
if ( pFilt )
aFilterName = pFilt->GetName();
}
}
}
}
}
if ( nIndexOfInputStream == -1 && xStream.is() )
{
// if input stream wasn't part of the descriptor, now it should be, otherwise the content would be opend twice
lDescriptor.realloc( nPropertyCount + 1 );
lDescriptor[nPropertyCount].Name = "InputStream";
lDescriptor[nPropertyCount].Value <<= xStream;
nPropertyCount++;
}
if ( nIndexOfContent == -1 && xContent.is() )
{
// if input stream wasn't part of the descriptor, now it should be, otherwise the content would be opend twice
lDescriptor.realloc( nPropertyCount + 1 );
lDescriptor[nPropertyCount].Name = "UCBContent";
lDescriptor[nPropertyCount].Value <<= xContent;
nPropertyCount++;
}
if ( bReadOnly != bWasReadOnly )
{
if ( nIndexOfReadOnlyFlag == -1 )
{
lDescriptor.realloc( nPropertyCount + 1 );
lDescriptor[nPropertyCount].Name = "ReadOnly";
lDescriptor[nPropertyCount].Value <<= bReadOnly;
nPropertyCount++;
}
else
lDescriptor[nIndexOfReadOnlyFlag].Value <<= bReadOnly;
}
if ( !bRepairPackage && bRepairAllowed )
{
lDescriptor.realloc( nPropertyCount + 1 );
lDescriptor[nPropertyCount].Name = "RepairPackage";
lDescriptor[nPropertyCount].Value <<= bRepairAllowed;
nPropertyCount++;
bOpenAsTemplate = sal_True;
// TODO/LATER: set progress bar that should be used
}
if ( bOpenAsTemplate )
{
if ( nIndexOfTemplateFlag == -1 )
{
lDescriptor.realloc( nPropertyCount + 1 );
lDescriptor[nPropertyCount].Name = "AsTemplate";
lDescriptor[nPropertyCount].Value <<= bOpenAsTemplate;
nPropertyCount++;
}
else
lDescriptor[nIndexOfTemplateFlag].Value <<= bOpenAsTemplate;
}
if ( !aDocumentTitle.isEmpty() )
{
// the title was set here
if ( nIndexOfDocumentTitle == -1 )
{
lDescriptor.realloc( nPropertyCount + 1 );
lDescriptor[nPropertyCount].Name = "DocumentTitle";
lDescriptor[nPropertyCount].Value <<= aDocumentTitle;
nPropertyCount++;
}
else
lDescriptor[nIndexOfDocumentTitle].Value <<= aDocumentTitle;
}
if ( !aFilterName.Len() )
aTypeName.Erase();
return aTypeName;
}
/* XServiceInfo */
OUString SAL_CALL SmFilterDetect::getImplementationName() throw( RuntimeException )
{
return impl_getStaticImplementationName();
}
\
/* XServiceInfo */
sal_Bool SAL_CALL SmFilterDetect::supportsService( const OUString& sServiceName ) throw( RuntimeException )
{
Sequence< OUString > seqServiceNames = getSupportedServiceNames();
const OUString* pArray = seqServiceNames.getConstArray();
for ( sal_Int32 nCounter=0; nCounter<seqServiceNames.getLength(); nCounter++ )
{
if ( pArray[nCounter] == sServiceName )
{
return sal_True ;
}
}
return sal_False ;
}
/* XServiceInfo */
Sequence< OUString > SAL_CALL SmFilterDetect::getSupportedServiceNames() throw( RuntimeException )
{
return impl_getStaticSupportedServiceNames();
}
/* Helper for XServiceInfo */
Sequence< OUString > SmFilterDetect::impl_getStaticSupportedServiceNames()
{
Sequence< OUString > seqServiceNames( 1 );
seqServiceNames.getArray() [0] = "com.sun.star.frame.ExtendedTypeDetection";
return seqServiceNames ;
}
/* Helper for XServiceInfo */
OUString SmFilterDetect::impl_getStaticImplementationName()
{
return OUString("com.sun.star.comp.math.FormatDetector");
}
/* Helper for registry */
Reference< XInterface > SAL_CALL SmFilterDetect::impl_createInstance( const Reference< XMultiServiceFactory >& xServiceManager ) throw( Exception )
{
return Reference< XInterface >( *new SmFilterDetect( xServiceManager ) );
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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