com.liferay.portlet.xslcontent.util.XSLContentUtil Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of portal-impl Show documentation

Contains implementation for the portal services.

There is a newer version: 7.0.0-nightly

/**
 * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
 *
 * This library 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 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library 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.
 */

package com.liferay.portlet.xslcontent.util;

import com.liferay.portal.kernel.io.unsync.UnsyncByteArrayOutputStream;
import com.liferay.portal.kernel.io.unsync.UnsyncStringReader;
import com.liferay.portal.kernel.util.HttpUtil;

import java.io.IOException;

import java.net.URL;

import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;

/**
 * @author Brian Wing Shun Chan
 */
public class XSLContentUtil {

	public static final String DEFAULT_XML_URL =
		"@portal_url@/html/portlet/xsl_content/example.xml";

	public static final String DEFAULT_XSL_URL =
		"@portal_url@/html/portlet/xsl_content/example.xsl";

	public static String transform(URL xmlUrl, URL xslUrl)
		throws IOException, TransformerException {

		String xml = HttpUtil.URLtoString(xmlUrl);
		String xsl = HttpUtil.URLtoString(xslUrl);

		StreamSource xmlSource = new StreamSource(new UnsyncStringReader(xml));
		StreamSource xslSource = new StreamSource(new UnsyncStringReader(xsl));

		TransformerFactory transformerFactory =
			TransformerFactory.newInstance();

		Transformer transformer = transformerFactory.newTransformer(xslSource);

		UnsyncByteArrayOutputStream unsyncByteArrayOutputStream =
			new UnsyncByteArrayOutputStream();

		transformer.transform(
			xmlSource, new StreamResult(unsyncByteArrayOutputStream));

		return unsyncByteArrayOutputStream.toString();
	}

}