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|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#include <stdio.h>
#include <cppuhelper/factory.hxx>
#include <cppuhelper/servicefactory.hxx>
#include <cppuhelper/implbase4.hxx>
#include <cppuhelper/implbase.hxx>
#include <sax/tools/documenthandleradapter.hxx>
#include <osl/time.h>
#include <osl/conditn.h>
#include <rtl/strbuf.hxx>
#include <tools/urlobj.hxx>
#include <comphelper/interaction.hxx>
#include <comphelper/processfactory.hxx>
#include <com/sun/star/lang/XComponent.hpp>
#include <com/sun/star/lang/EventObject.hpp>
#include <com/sun/star/uno/Any.hxx>
#include <com/sun/star/beans/PropertyValue.hpp>
#include <com/sun/star/xml/sax/XParser.hpp>
#include <com/sun/star/xml/sax/InputSource.hpp>
#include <com/sun/star/xml/sax/XDocumentHandler.hpp>
#include <com/sun/star/xml/sax/XExtendedDocumentHandler.hpp>
#include <com/sun/star/xml/sax/SAXException.hpp>
#include <com/sun/star/xml/XImportFilter.hpp>
#include <com/sun/star/xml/XExportFilter.hpp>
#include <com/sun/star/util/XMacroExpander.hpp>
#include <com/sun/star/io/Pipe.hpp>
#include <com/sun/star/io/XInputStream.hpp>
#include <com/sun/star/io/XOutputStream.hpp>
#include <com/sun/star/io/XActiveDataSource.hpp>
#include <com/sun/star/io/XActiveDataSink.hpp>
#include <com/sun/star/io/XActiveDataControl.hpp>
#include <com/sun/star/io/XStreamListener.hpp>
#include <com/sun/star/util/PathSubstitution.hpp>
#include <com/sun/star/util/XStringSubstitution.hpp>
#include <com/sun/star/beans/NamedValue.hpp>
#include <com/sun/star/task/XInteractionHandler.hpp>
#include <com/sun/star/task/XInteractionRequest.hpp>
#include <com/sun/star/ucb/InteractiveAugmentedIOException.hpp>
#include <xmloff/attrlist.hxx>
#include <LibXSLTTransformer.hxx>
#define TRANSFORMATION_TIMEOUT_SEC 60
using namespace ::rtl;
using namespace ::cppu;
using namespace ::osl;
using namespace ::sax;
using namespace ::com::sun::star::beans;
using namespace ::com::sun::star::io;
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::registry;
using namespace ::com::sun::star::xml;
using namespace ::com::sun::star::xml::sax;
using namespace ::com::sun::star::util;
using namespace ::com::sun::star::task;
namespace css = com::sun::star;
namespace XSLT
{
/*
* XSLTFilter reads flat XML streams from the XML filter framework and passes
* them to an XSLT transformation service. XSLT transformation errors are
* reported to XSLTFilter.
*
* Currently, two implementations for the XSLT transformation service exist:
* a java based service (see XSLTransformer.java) and a libxslt based
* service (LibXSLTTransformer.cxx).
*
* The libxslt implementation will be used by default.
*
* If the value of the 2nd "UserData" parameter of the filter configuration is
* not empty, the service name given there will be used.
*/
class XSLTFilter : public WeakImplHelper4<XImportFilter, XExportFilter,
XStreamListener, ExtendedDocumentHandlerAdapter>
{
private:
// the UNO ServiceFactory
css::uno::Reference<XMultiServiceFactory> m_rServiceFactory;
// DocumentHandler interface of the css::xml::sax::Writer service
css::uno::Reference<XOutputStream> m_rOutputStream;
css::uno::Reference<XActiveDataControl> m_tcontrol;
oslCondition m_cTransformed;
sal_Bool m_bTerminated;
sal_Bool m_bError;
OUString m_aExportBaseUrl;
OUString
rel2abs(const OUString&);
OUString
expandUrl(const OUString&);
public:
// ctor...
XSLTFilter(const css::uno::Reference<XMultiServiceFactory> &r);
// XStreamListener
virtual void SAL_CALL
error(const Any& a) throw (RuntimeException);
virtual void SAL_CALL
closed() throw (RuntimeException);
virtual void SAL_CALL
terminated() throw (RuntimeException);
virtual void SAL_CALL
started() throw (RuntimeException);
virtual void SAL_CALL
disposing(const EventObject& e) throw (RuntimeException);
// XImportFilter
virtual sal_Bool SAL_CALL
importer(const Sequence<PropertyValue>& aSourceData, const css::uno::Reference<
XDocumentHandler>& xHandler,
const Sequence<OUString>& msUserData) throw (RuntimeException);
// XExportFilter
virtual sal_Bool SAL_CALL
exporter(const Sequence<PropertyValue>& aSourceData, const Sequence<
OUString>& msUserData) throw (RuntimeException);
// XDocumentHandler
virtual void SAL_CALL
startDocument() throw (SAXException, RuntimeException);
virtual void SAL_CALL
endDocument() throw (SAXException, RuntimeException);
};
XSLTFilter::XSLTFilter(const css::uno::Reference<XMultiServiceFactory> &r):
m_rServiceFactory(r), m_bTerminated(sal_False), m_bError(sal_False)
{
m_cTransformed = osl_createCondition();
}
void
XSLTFilter::disposing(const EventObject&) throw (RuntimeException)
{
}
::rtl::OUString
XSLTFilter::expandUrl(const ::rtl::OUString& sUrl)
{
::rtl::OUString sExpandedUrl;
try
{
css::uno::Reference<XComponentContext> xContext(
comphelper::getComponentContext(m_rServiceFactory));
css::uno::Reference<XMacroExpander>
xMacroExpander(
xContext->getValueByName(
::rtl::OUString(
"/singletons/com.sun.star.util.theMacroExpander" )),
UNO_QUERY_THROW);
sExpandedUrl = xMacroExpander->expandMacros(sUrl);
sal_Int32 nPos = sExpandedUrl.indexOf( "vnd.sun.star.expand:" );
if (nPos != -1)
sExpandedUrl = sExpandedUrl.copy(nPos + 20);
}
catch (const Exception&)
{
}
return sExpandedUrl;
}
void
XSLTFilter::started() throw (RuntimeException)
{
osl_resetCondition(m_cTransformed);
}
void
XSLTFilter::error(const Any& a) throw (RuntimeException)
{
Exception e;
if (a >>= e)
{
rtl::OStringBuffer aMessage(RTL_CONSTASCII_STRINGPARAM("XSLTFilter::error was called: "));
aMessage.append(rtl::OUStringToOString(e.Message, RTL_TEXTENCODING_ASCII_US));
OSL_FAIL(aMessage.getStr());
}
m_bError = sal_True;
osl_setCondition(m_cTransformed);
}
void
XSLTFilter::closed() throw (RuntimeException)
{
osl_setCondition(m_cTransformed);
}
void
XSLTFilter::terminated() throw (RuntimeException)
{
m_bTerminated = sal_True;
osl_setCondition(m_cTransformed);
}
OUString
XSLTFilter::rel2abs(const OUString& s)
{
css::uno::Reference< css::uno::XComponentContext > xContext( comphelper::getComponentContext(m_rServiceFactory) );
css::uno::Reference<XStringSubstitution>
subs(css::util::PathSubstitution::create(xContext));
OUString aWorkingDir(subs->getSubstituteVariableValue(OUString( "$(progurl)")));
INetURLObject aObj(aWorkingDir);
aObj.setFinalSlash();
bool bWasAbsolute;
INetURLObject aURL = aObj.smartRel2Abs(s, bWasAbsolute, false,
INetURLObject::WAS_ENCODED, RTL_TEXTENCODING_UTF8, true);
return aURL.GetMainURL(INetURLObject::NO_DECODE);
}
sal_Bool
XSLTFilter::importer(const Sequence<PropertyValue>& aSourceData,
const css::uno::Reference<XDocumentHandler>& xHandler, const Sequence<
OUString>& msUserData) throw (RuntimeException)
{
if (msUserData.getLength() < 5)
return sal_False;
OUString udImport = msUserData[2];
OUString udStyleSheet = rel2abs(msUserData[4]);
// get information from media descriptor
// the imput stream that represents the imported file
// is most important here since we need to supply it to
// the sax parser that drives the supplied document handler
sal_Int32 nLength = aSourceData.getLength();
OUString aName, aFileName, aURL;
css::uno::Reference<XInputStream> xInputStream;
css::uno::Reference<XInteractionHandler> xInterActionHandler;
for (sal_Int32 i = 0; i < nLength; i++)
{
aName = aSourceData[i].Name;
Any value = aSourceData[i].Value;
if ( aName == "InputStream" )
value >>= xInputStream;
else if ( aName == "FileName" )
value >>= aFileName;
else if ( aName == "URL" )
value >>= aURL;
else if ( aName == "InteractionHandler" )
value >>= xInterActionHandler;
}
OSL_ASSERT(xInputStream.is());
if (!xInputStream.is())
return sal_False;
// create SAX parser that will read the document file
// and provide events to xHandler passed to this call
css::uno::Reference<XParser>
xSaxParser(
m_rServiceFactory->createInstance(
OUString(
"com.sun.star.xml.sax.Parser" )),
UNO_QUERY);
OSL_ASSERT(xSaxParser.is());
if (!xSaxParser.is())
return sal_False;
// create transformer
Sequence<Any> args(3);
NamedValue nv;
nv.Name = OUString( "StylesheetURL" );
nv.Value <<= expandUrl(udStyleSheet);
args[0] <<= nv;
nv.Name = OUString( "SourceURL" );
nv.Value <<= aURL;
args[1] <<= nv;
nv.Name = OUString( "SourceBaseURL" );
nv.Value <<= OUString(INetURLObject(aURL).getBase());
args[2] <<= nv;
OUString serviceName("com.sun.star.comp.documentconversion.LibXSLTTransformer");
if (!msUserData[1].isEmpty())
serviceName = msUserData[1];
m_tcontrol = css::uno::Reference<XActiveDataControl> (m_rServiceFactory->createInstanceWithArguments(serviceName, args), UNO_QUERY);
OSL_ASSERT(xHandler.is());
OSL_ASSERT(xInputStream.is());
OSL_ASSERT(m_tcontrol.is());
if (xHandler.is() && xInputStream.is() && m_tcontrol.is())
{
try
{
// we want to be notfied when the processing is done...
m_tcontrol->addListener(css::uno::Reference<XStreamListener> (
this));
// connect input to transformer
css::uno::Reference<XActiveDataSink> tsink(m_tcontrol, UNO_QUERY);
tsink->setInputStream(xInputStream);
// create pipe
css::uno::Reference<XOutputStream> pipeout(
Pipe::create(comphelper::getComponentContext(m_rServiceFactory)),
UNO_QUERY);
css::uno::Reference<XInputStream> pipein(pipeout, UNO_QUERY);
//connect transformer to pipe
css::uno::Reference<XActiveDataSource> tsource(m_tcontrol,
UNO_QUERY);
tsource->setOutputStream(pipeout);
// connect pipe to sax parser
InputSource aInput;
aInput.sSystemId = aURL;
aInput.sPublicId = aURL;
aInput.aInputStream = pipein;
// set doc handler
xSaxParser->setDocumentHandler(xHandler);
// transform
m_tcontrol->start();
TimeValue timeout = { TRANSFORMATION_TIMEOUT_SEC, 0};
oslConditionResult result(osl_waitCondition(m_cTransformed, &timeout));
while (osl_cond_result_timeout == result) {
if (xInterActionHandler.is()) {
Sequence<Any> excArgs(0);
::com::sun::star::ucb::InteractiveAugmentedIOException exc(
rtl::OUString("Timeout!"),
static_cast< OWeakObject * >( this ),
InteractionClassification_ERROR,
::com::sun::star::ucb::IOErrorCode_GENERAL,
excArgs);
Any r;
r <<= exc;
::comphelper::OInteractionRequest* pRequest = new ::comphelper::OInteractionRequest(r);
css::uno::Reference< XInteractionRequest > xRequest(pRequest);
::comphelper::OInteractionRetry* pRetry = new ::comphelper::OInteractionRetry;
::comphelper::OInteractionAbort* pAbort = new ::comphelper::OInteractionAbort;
pRequest->addContinuation(pRetry);
pRequest->addContinuation(pAbort);
xInterActionHandler->handle(xRequest);
if (pAbort->wasSelected()) {
m_bError = sal_True;
osl_setCondition(m_cTransformed);
}
}
result = osl_waitCondition(m_cTransformed, &timeout);
};
if (!m_bError) {
xSaxParser->parseStream(aInput);
}
m_tcontrol->terminate();
return !m_bError;
}
#if OSL_DEBUG_LEVEL > 0
catch( const Exception& exc)
#else
catch (const Exception&)
#endif
{
// something went wrong
OSL_FAIL(OUStringToOString(exc.Message, RTL_TEXTENCODING_ASCII_US).getStr());
return sal_False;
}
}
else
{
return sal_False;
}
}
sal_Bool
XSLTFilter::exporter(const Sequence<PropertyValue>& aSourceData,
const Sequence<OUString>& msUserData) throw (RuntimeException)
{
if (msUserData.getLength() < 6)
return sal_False;
// get interesting values from user data
OUString udImport = msUserData[2];
OUString udStyleSheet = rel2abs(msUserData[5]);
// read source data
// we are especialy interested in the output stream
// since that is where our xml-writer will push the data
// from it's data-source interface
OUString aName, sURL;
sal_Bool bIndent = sal_False;
OUString aDoctypePublic;
OUString aDoctypeSystem;
// css::uno::Reference<XOutputStream> rOutputStream;
sal_Int32 nLength = aSourceData.getLength();
for (sal_Int32 i = 0; i < nLength; i++)
{
aName = aSourceData[i].Name;
if ( aName == "Indent" )
aSourceData[i].Value >>= bIndent;
if ( aName == "DocType_Public" )
aSourceData[i].Value >>= aDoctypePublic;
if ( aName == "DocType_System" )
aSourceData[i].Value >>= aDoctypeSystem;
if ( aName == "OutputStream" )
aSourceData[i].Value >>= m_rOutputStream;
else if ( aName == "URL" )
aSourceData[i].Value >>= sURL;
}
if (!getDelegate().is())
{
// get the document writer
setDelegate(css::uno::Reference<XExtendedDocumentHandler> (
m_rServiceFactory->createInstance(
OUString(
"com.sun.star.xml.sax.Writer" )),
UNO_QUERY));
}
// create transformer
Sequence<Any> args(4);
NamedValue nv;
nv.Name = OUString( "StylesheetURL" );
nv.Value <<= expandUrl(udStyleSheet);
args[0] <<= nv;
nv.Name = OUString( "TargetURL" );
nv.Value <<= sURL;
args[1] <<= nv;
nv.Name = OUString( "DoctypeSystem" );
nv.Value <<= aDoctypeSystem;
args[2] <<= nv;
nv.Name = OUString( "DoctypePublic" );
nv.Value <<= aDoctypePublic;
args[3] <<= nv;
nv.Name = OUString( "TargetBaseURL" );
INetURLObject ineturl(sURL);
ineturl.removeSegment();
m_aExportBaseUrl = ineturl.GetMainURL(INetURLObject::NO_DECODE);
nv.Value <<= m_aExportBaseUrl;
args[3] <<= nv;
OUString serviceName("com.sun.star.comp.documentconversion.LibXSLTTransformer");
if (!msUserData[1].isEmpty())
serviceName = msUserData[1];
m_tcontrol = css::uno::Reference<XActiveDataControl> (m_rServiceFactory->createInstanceWithArguments(serviceName, args), UNO_QUERY);
OSL_ASSERT(m_rOutputStream.is());
OSL_ASSERT(m_tcontrol.is());
if (m_tcontrol.is() && m_rOutputStream.is())
{
// we want to be notfied when the processing is done...
m_tcontrol->addListener(css::uno::Reference<XStreamListener> (this));
// create pipe
css::uno::Reference<XOutputStream> pipeout(
Pipe::create(comphelper::getComponentContext(m_rServiceFactory)),
UNO_QUERY);
css::uno::Reference<XInputStream> pipein(pipeout, UNO_QUERY);
// connect sax writer to pipe
css::uno::Reference<XActiveDataSource> xmlsource(getDelegate(),
UNO_QUERY);
xmlsource->setOutputStream(pipeout);
// connect pipe to transformer
css::uno::Reference<XActiveDataSink> tsink(m_tcontrol, UNO_QUERY);
tsink->setInputStream(pipein);
// connect transformer to output
css::uno::Reference<XActiveDataSource> tsource(m_tcontrol, UNO_QUERY);
tsource->setOutputStream(m_rOutputStream);
// we will start receiving events after returning 'true'.
// we will start the transformation as soon as we receive the startDocument
// event.
return sal_True;
}
else
{
return sal_False;
}
}
// for the DocumentHandler implementation, we just proxy the the
// events to the XML writer that we created upon the output stream
// that was provided by the XMLFilterAdapter
void
XSLTFilter::startDocument() throw (SAXException, RuntimeException)
{
ExtendedDocumentHandlerAdapter::startDocument();
m_tcontrol->start();
}
void
XSLTFilter::endDocument() throw (SAXException, RuntimeException)
{
ExtendedDocumentHandlerAdapter::endDocument();
// wait for the transformer to finish
osl_waitCondition(m_cTransformed, 0);
m_tcontrol->terminate();
if (!m_bError && !m_bTerminated)
{
return;
}
else
{
throw RuntimeException();
}
}
// --------------------------------------
// Component management
// --------------------------------------
#define FILTER_SERVICE_NAME "com.sun.star.documentconversion.XSLTFilter"
#define FILTER_IMPL_NAME "com.sun.star.comp.documentconversion.XSLTFilter"
#define TRANSFORMER_SERVICE_NAME "com.sun.star.documentconversion.LibXSLTTransformer"
#define TRANSFORMER_IMPL_NAME "com.sun.star.comp.documentconversion.LibXSLTTransformer"
static css::uno::Reference<XInterface> SAL_CALL
CreateTransformerInstance(const css::uno::Reference<XMultiServiceFactory> &r)
{
return css::uno::Reference<XInterface> ((OWeakObject *) new LibXSLTTransformer(r));
}
static css::uno::Reference<XInterface> SAL_CALL
CreateFilterInstance(const css::uno::Reference<XMultiServiceFactory> &r)
{
return css::uno::Reference<XInterface> ((OWeakObject *) new XSLTFilter(r));
}
}
using namespace XSLT;
extern "C"
{
SAL_DLLPUBLIC_EXPORT void * SAL_CALL xsltfilter_component_getFactory(const sal_Char * pImplName,
void * pServiceManager, void * /* pRegistryKey */)
{
void * pRet = 0;
if (pServiceManager)
{
if (rtl_str_compare(pImplName, FILTER_IMPL_NAME) == 0)
{
Sequence<OUString> serviceNames(1);
serviceNames.getArray()[0]
= OUString(
FILTER_SERVICE_NAME );
css::uno::Reference<XSingleServiceFactory>
xFactory(
createSingleFactory(
reinterpret_cast<XMultiServiceFactory *> (pServiceManager),
OUString::createFromAscii(
pImplName),
CreateFilterInstance,
serviceNames));
if (xFactory.is())
{
xFactory->acquire();
pRet = xFactory.get();
}
}
else if (rtl_str_compare(pImplName, TRANSFORMER_IMPL_NAME) == 0)
{
Sequence<OUString> serviceNames(1);
serviceNames.getArray()[0]
= OUString(
TRANSFORMER_SERVICE_NAME );
css::uno::Reference<XSingleServiceFactory>
xFactory(
createSingleFactory(
reinterpret_cast<XMultiServiceFactory *> (pServiceManager),
OUString::createFromAscii(
pImplName),
CreateTransformerInstance,
serviceNames));
if (xFactory.is())
{
xFactory->acquire();
pRet = xFactory.get();
}
}
}
return pRet;
}
} // extern "C"
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