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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/.
*/
#ifndef __LIBXSLTTRANSFORMER_HXX__
#define __LIBXSLTTRANSFORMER_HXX__
#include <stdio.h>
#include <list>
#include <map>
#include <libxml/parser.h>
#include <libxml/tree.h>
#include <libxml/xmlIO.h>
#include <libxslt/transform.h>
#include <libxml/xpathInternals.h>
#include <cppuhelper/factory.hxx>
#include <cppuhelper/implbase1.hxx>
#include <cppuhelper/implbase.hxx>
#include <rtl/ref.hxx>
#include <salhelper/thread.hxx>
#include <com/sun/star/uno/Any.hxx>
#include <com/sun/star/lang/XMultiServiceFactory.hpp>
#include <com/sun/star/io/XInputStream.hpp>
#include <com/sun/star/io/XOutputStream.hpp>
#include <com/sun/star/io/XStreamListener.hpp>
#include <com/sun/star/beans/NamedValue.hpp>
#include <com/sun/star/xml/xslt/XXSLTTransformer.hpp>
using namespace ::rtl;
using namespace ::cppu;
using namespace ::osl;
using namespace ::com::sun::star::beans;
using namespace ::com::sun::star::io;
using namespace ::com::sun::star::uno;
using ::std::list;
using ::std::map;
#define EXT_MODULE_OLE_URI "http://libreoffice.org/2011/xslt/ole"
namespace XSLT
{
/*
* LibXSLTTransformer provides an transforming pipe service to XSLTFilter.
*
* It implements XActiveDataSource, XActiveDataSink and XActiveDataControl
* to consume data. It also notifies upstream of important events such as
* begin and end of the transformation and of any errors that occur during
* transformation.
*
* TODO: Error reporting leaves room for improvement, currently.
*
* The actual transformation is done by a worker thread.
*
* See Reader below.
*/
class LibXSLTTransformer : public WeakImplHelper1<com::sun::star::xml::xslt::XXSLTTransformer>
{
private:
static const char* const PARAM_SOURCE_URL;
static const char* const PARAM_SOURCE_BASE_URL;
static const char* const PARAM_TARGET_URL;
static const char* const PARAM_TARGET_BASE_URL;
static const char* const PARAM_DOCTYPE_PUBLIC;
// the UNO ServiceFactory
com::sun::star::uno::Reference<com::sun::star::uno::XComponentContext> m_xContext;
com::sun::star::uno::Reference<XInputStream> m_rInputStream;
com::sun::star::uno::Reference<XOutputStream> m_rOutputStream;
typedef ::std::list<com::sun::star::uno::Reference<XStreamListener> > ListenerList;
ListenerList m_listeners;
OString m_styleSheetURL;
::std::map<const char *, OString> m_parameters;
rtl::Reference< salhelper::Thread > m_Reader;
protected:
virtual ~LibXSLTTransformer() {
if (m_Reader.is()) {
m_Reader->terminate();
m_Reader->join();
}
}
public:
// ctor...
LibXSLTTransformer(const com::sun::star::uno::Reference<com::sun::star::uno::XComponentContext> &r);
// XActiveDataSink
virtual void SAL_CALL
setInputStream(const com::sun::star::uno::Reference<XInputStream>& inputStream)
throw (RuntimeException);
virtual com::sun::star::uno::Reference<XInputStream> SAL_CALL
getInputStream() throw (RuntimeException);
// XActiveDataSource
virtual void SAL_CALL
setOutputStream(const com::sun::star::uno::Reference<XOutputStream>& outputStream)
throw (RuntimeException);
virtual com::sun::star::uno::Reference<XOutputStream> SAL_CALL
getOutputStream() throw (RuntimeException);
// XActiveDataControl
virtual void SAL_CALL
addListener(const com::sun::star::uno::Reference<XStreamListener>& listener)
throw (RuntimeException);
virtual void SAL_CALL
removeListener(const com::sun::star::uno::Reference<XStreamListener>& listener)
throw (RuntimeException);
virtual void SAL_CALL
start() throw (RuntimeException);
virtual void SAL_CALL
terminate() throw (RuntimeException);
virtual void SAL_CALL
initialize(const Sequence<Any>& params) throw (RuntimeException);
void SAL_CALL
done();
void SAL_CALL
error(const OUString& msg);
const OString SAL_CALL
getStyleSheetURL();
::std::map<const char*, OString> SAL_CALL
getParameters();
com::sun::star::uno::Reference<com::sun::star::uno::XComponentContext> SAL_CALL
getComponentContext() {
return m_xContext;
}
};
/*
* Reader provides a worker thread to perform the actual transformation.
* It pipes the streams provided by a LibXSLTTransformer
* instance through libxslt.
*/
class Reader : public salhelper::Thread
{
public:
Reader(LibXSLTTransformer* transformer);
int SAL_CALL
read(char * buffer, int len);
int SAL_CALL
write(const char * buffer, int len);
int SAL_CALL
closeInput();
int SAL_CALL
closeOutput();
private:
virtual
~Reader();
static const sal_Int32 OUTPUT_BUFFER_SIZE;
static const sal_Int32 INPUT_BUFFER_SIZE;
LibXSLTTransformer* m_transformer;
Sequence<sal_Int8> m_readBuf;
Sequence<sal_Int8> m_writeBuf;
virtual void
execute();
void SAL_CALL
registerExtensionModule();
};
}
;
#endif // __LIBXSLTTRANSFORMER_HXX__
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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