lbajardsilogic@15: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
lbajardsilogic@15: 
lbajardsilogic@15: /*	Sound Access	
lbajardsilogic@15: 		EASAIER client application.	
lbajardsilogic@15: 		Silogic 2007. Laure Bajard. 
lbajardsilogic@15: 	
lbajardsilogic@15: 	This program is free software; you can redistribute it and/or    
lbajardsilogic@15: 	modify it under the terms of the GNU General Public License as    
lbajardsilogic@15: 	published by the Free Software Foundation; either version 2 of the    
lbajardsilogic@15: 	License, or (at your option) any later version.  See the file    
lbajardsilogic@15: 	COPYING included with this distribution for more information.
lbajardsilogic@15: */
lbajardsilogic@15: 
lbajardsilogic@15: #include "SparqlResultsReader.h"
lbajardsilogic@15: 
lbajardsilogic@15: #include <iostream>
lbajardsilogic@15: 
lbajardsilogic@15: SparqlResultsReader::SparqlResultsReader(QueryResultsWidget* resultsWidget) : 
lbajardsilogic@15: 	m_resultsWidget(resultsWidget)
lbajardsilogic@15: {}
lbajardsilogic@15: 
lbajardsilogic@15: bool SparqlResultsReader::parse(const QString & filename)
lbajardsilogic@15: {
lbajardsilogic@15: 	SparqlResultsHandler handler(m_resultsWidget);
lbajardsilogic@15:     QXmlSimpleReader reader;
lbajardsilogic@15:     reader.setContentHandler(&handler);
lbajardsilogic@15:     reader.setErrorHandler(&handler);
lbajardsilogic@15: 
lbajardsilogic@15: 	QFile file(filename);
lbajardsilogic@15: 
lbajardsilogic@15:     if (!file.open(QFile::ReadOnly | QFile::Text)) {
lbajardsilogic@15:         return false;
lbajardsilogic@15:     }
lbajardsilogic@15: 
lbajardsilogic@15:     QXmlInputSource xmlInputSource(&file);
lbajardsilogic@15:     if (reader.parse(xmlInputSource))
lbajardsilogic@15: 	{
benoitrigolleau@144: 		m_resultsWidget->displayResult();
lbajardsilogic@15: 		return true;
lbajardsilogic@15: 	}
lbajardsilogic@15: 	
lbajardsilogic@15: 	return false;
lbajardsilogic@15: }
lbajardsilogic@15: 
lbajardsilogic@15: SparqlResultsHandler::SparqlResultsHandler(QueryResultsWidget* resultsWidget) : QXmlDefaultHandler(),
lbajardsilogic@15: 	m_resultsWidget(resultsWidget),
lbajardsilogic@15: 	m_inBinding(false),
lbajardsilogic@15: 	m_curBindingName("")
lbajardsilogic@15: {}
lbajardsilogic@15: 
lbajardsilogic@15: bool SparqlResultsHandler::startElement(const QString &namespaceURI, const QString &localName,
lbajardsilogic@15: 						  const QString &qName, const QXmlAttributes &attributes)
lbajardsilogic@15: {
lbajardsilogic@15: 	
lbajardsilogic@15:     QString name = qName.toLower();
lbajardsilogic@15: 
lbajardsilogic@15:     bool ok = false;
lbajardsilogic@15: 
lbajardsilogic@15:     // Valid element names:
lbajardsilogic@15:     //
lbajardsilogic@15:     // sparql
lbajardsilogic@15:     // head
lbajardsilogic@15:     // variable
lbajardsilogic@15:     // results
lbajardsilogic@15: 	// result
lbajardsilogic@15: 	// binding
lbajardsilogic@15:     
lbajardsilogic@15:     if (name == "sparql") {
lbajardsilogic@15: 
lbajardsilogic@15: 		// nothing needed
lbajardsilogic@15: 		ok = true;
lbajardsilogic@15: 
lbajardsilogic@15:     } else if (name == "head") {
lbajardsilogic@15: 
lbajardsilogic@15: 		// nothing needed
lbajardsilogic@15: 		ok = true;
lbajardsilogic@15: 
lbajardsilogic@15:     } else if (name == "variable") {
lbajardsilogic@15: 
lbajardsilogic@15: 		// nothing needed
lbajardsilogic@15: 		ok = true;
lbajardsilogic@15:     
lbajardsilogic@15:     } else if (name == "results") {
lbajardsilogic@15: 	
lbajardsilogic@15: 		// nothing needed
lbajardsilogic@15: 		ok = true;
lbajardsilogic@15: 
lbajardsilogic@15:     } else if (name == "result") {
lbajardsilogic@15: 	
lbajardsilogic@15: 		m_resultsWidget->newResult();
lbajardsilogic@15: 		ok = true;
lbajardsilogic@15: 
lbajardsilogic@15:     } else if (name == "binding") {
lbajardsilogic@15: 	
lbajardsilogic@15: 		m_curBindingName = attributes.value("name");
lbajardsilogic@15: 		ok = true;
lbajardsilogic@15: 
lbajardsilogic@15:     } else if ( (name == "uri") || (name == "literal") ) {
lbajardsilogic@15: 		m_inBinding = true;	
lbajardsilogic@15: 		ok = true;
lbajardsilogic@15: 	}
lbajardsilogic@15: 
lbajardsilogic@15:     if (!ok) {
lbajardsilogic@15: 		std::cerr << "WARNING: SparqlResultsHandler-XML: Failed to completely process element \""
lbajardsilogic@15: 		  << name.toLocal8Bit().data() << "\"" << std::endl;
lbajardsilogic@15:     }
lbajardsilogic@15: 
lbajardsilogic@15:     return true;
lbajardsilogic@15: }
lbajardsilogic@15: 
lbajardsilogic@15: bool SparqlResultsHandler::endElement(const QString &namespaceURI, const QString &localName,
lbajardsilogic@15: 						const QString &qName)
lbajardsilogic@15: {
lbajardsilogic@15: 	QString name = qName.toLower();
lbajardsilogic@15: 
lbajardsilogic@15: 	if ( (name == "uri") || (name == "literal") )
lbajardsilogic@15: 	{
lbajardsilogic@15: 		m_inBinding = false;
lbajardsilogic@15: 		m_curBindingName = "";
lbajardsilogic@15: 
lbajardsilogic@15: 	} else if (name == "result")
lbajardsilogic@15: 	{
benoitrigolleau@144: 		m_resultsWidget->saveCurResult();
lbajardsilogic@15: 	}
lbajardsilogic@15: 
lbajardsilogic@15: 	return true;
lbajardsilogic@15: }
lbajardsilogic@15: 
lbajardsilogic@15: bool SparqlResultsHandler::characters(const QString &str)
lbajardsilogic@15: {
lbajardsilogic@15: 	if (m_inBinding)
lbajardsilogic@15: 	{
lbajardsilogic@15: 		m_resultsWidget->addInfo(m_curBindingName, str);
lbajardsilogic@15: 	}
lbajardsilogic@15: 
lbajardsilogic@15:     return true;
lbajardsilogic@15: }
lbajardsilogic@15: 
lbajardsilogic@15: bool SparqlResultsHandler::error(const QXmlParseException &exception)
lbajardsilogic@15: {
lbajardsilogic@15: 	QString errorString;
lbajardsilogic@15: 	errorString += QString("ERROR: SparqlResultsHandler-XML: %1 at line %2, column %3")
lbajardsilogic@15: 	.arg(exception.message())
lbajardsilogic@15: 	.arg(exception.lineNumber())
lbajardsilogic@15: 	.arg(exception.columnNumber());
lbajardsilogic@15:     std::cerr << errorString.toLocal8Bit().data() << std::endl;
lbajardsilogic@15:     return QXmlDefaultHandler::error(exception);
lbajardsilogic@15: }
lbajardsilogic@15: 
lbajardsilogic@15: bool SparqlResultsHandler::fatalError(const QXmlParseException &exception)
lbajardsilogic@15: {
lbajardsilogic@15: 	QString errorString;
lbajardsilogic@15: 	errorString += QString("FATAL ERROR: SparqlResultsHandler-XML: %1 at line %2, column %3")
lbajardsilogic@15: 	.arg(exception.message())
lbajardsilogic@15: 	.arg(exception.lineNumber())
lbajardsilogic@15: 	.arg(exception.columnNumber());
lbajardsilogic@15:     std::cerr << errorString.toLocal8Bit().data() << std::endl;
lbajardsilogic@15:     return QXmlDefaultHandler::fatalError(exception);
lbajardsilogic@15: }