/*
 *  eXist Open Source Native XML Database
 *  Copyright (C) 2010-2011 The eXist Project
 *  http://exist-db.org
 *  
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public License
 *  as published by the Free Software Foundation; either version 2
 *  of the License, or (at your option) any later version.
 *  
 *  This program 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 for more details.
 *  
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *  
 *  $Id$
 */
package org.exist.debugger;

import java.io.IOException;
import java.io.StringReader;

import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

import org.exist.Namespaces;
import org.exist.dom.memtree.NodeImpl;
import org.exist.dom.memtree.SAXAdapter;
import org.exist.xquery.XQueryContext;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;

/**
 * @author <a href="mailto:shabanovd@gmail.com">Dmitriy Shabanov</a>
 *
 */
public class Utils {

    public static NodeImpl nodeFromString(XQueryContext context, String source) throws IOException {
        SAXAdapter adapter = new SAXAdapter(context);

        SAXParserFactory factory = SAXParserFactory.newInstance();
        factory.setNamespaceAware(true);
        
        XMLReader xr;
		try {
			SAXParser parser = factory.newSAXParser();

			xr = parser.getXMLReader();
			xr.setContentHandler(adapter);
			xr.setProperty(Namespaces.SAX_LEXICAL_HANDLER, adapter);

		} catch (Exception e) {
			throw new IOException(e);
		}
        
        try {
            InputSource src = new InputSource(new StringReader(source));
            xr.parse(src);
            
            return (NodeImpl) adapter.getDocument();
		} catch (SAXException e) {
			throw new IOException(e);
        }
    }
}