XMLSourceUtil.java

/**
 * Copyright (c) 2000-present 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.source.formatter.checks.util;

import java.util.List;
import java.util.Map;
import java.util.TreeMap;

import org.dom4j.Element;

/**
 * @author Hugo Huijser
 */
public class XMLSourceUtil {

	public static void sortElementsByChildElement(
		Element element, String elementName, String childElementName) {

		Map<String, Element> elementsMap = new TreeMap<>();

		List<Element> elements = element.elements();

		for (Element curElement : elements) {
			curElement.detach();

			if (elementName.equals(curElement.getName())) {
				String childElementValue = curElement.elementText(
					childElementName);

				elementsMap.put(childElementValue, curElement);
			}
		}

		for (Element curElement : elements) {
			if (elementName.equals(curElement.getName())) {
				break;
			}

			element.add(curElement);
		}

		for (Map.Entry<String, Element> entry : elementsMap.entrySet()) {
			Element curElement = entry.getValue();

			element.add(curElement);
		}

		boolean foundLastElementWithElementName = false;

		for (int i = 0; i < elements.size(); i++) {
			Element curElement = elements.get(i);

			if (!foundLastElementWithElementName) {
				if (elementName.equals(curElement.getName()) &&
					((i + 1) < elements.size())) {

					Element nextElement = elements.get(i + 1);

					if (!elementName.equals(nextElement.getName())) {
						foundLastElementWithElementName = true;
					}
				}
			}
			else {
				element.add(curElement);
			}
		}
	}

}