/**
 * Copyright 2010 JBoss Inc
 *
 * Licensed 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
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.eclipse.webdav.internal.kernel;

import java.io.*;
import javax.xml.parsers.*;
import javax.xml.transform.*;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.Document;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

public class DocumentMarshaler implements IDocumentMarshaler {

	public Document parse(Reader reader) throws IOException {
		try {
			DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
			DocumentBuilder parser = factory.newDocumentBuilder();
			return parser.parse(new InputSource(reader));
		} catch (ParserConfigurationException e) {
			throw new IOException(e.getMessage());
		} catch (SAXException e) {
			throw new IOException(e.getMessage());
		}
	}

	public void print(Document document, Writer writer, String encoding) throws IOException {
		Transformer transformer = null;
		try {
			transformer = TransformerFactory.newInstance().newTransformer();
		} catch (TransformerConfigurationException e) {
			throw new IOException(e.getMessageAndLocation());
		} catch (TransformerFactoryConfigurationError e) {
			throw new IOException(e.getMessage());
		}
		DOMSource source = new DOMSource(document);
		StreamResult result = new StreamResult(writer);
		try {
			transformer.transform(source, result);
		} catch (TransformerException e) {
			throw new IOException(e.getMessageAndLocation());
		}
	}
}
