XMLTagAttributesCheck.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;

import com.liferay.portal.kernel.io.unsync.UnsyncBufferedReader;
import com.liferay.portal.kernel.io.unsync.UnsyncStringReader;
import com.liferay.portal.kernel.util.StringBundler;
import com.liferay.portal.kernel.util.StringPool;
import com.liferay.portal.kernel.util.StringUtil;

/**
 * @author Hugo Huijser
 */
public class XMLTagAttributesCheck extends TagAttributesCheck {

	@Override
	protected String doProcess(
			String fileName, String absolutePath, String content)
		throws Exception {

		content = _formatTagAttributes(fileName, content);

		return content;
	}

	private String _formatTagAttributes(String fileName, String content)
		throws Exception {

		StringBundler sb = new StringBundler();

		try (UnsyncBufferedReader unsyncBufferedReader =
				new UnsyncBufferedReader(new UnsyncStringReader(content))) {

			String line = null;

			int lineCount = 0;

			boolean sortAttributes = true;

			while ((line = unsyncBufferedReader.readLine()) != null) {
				lineCount++;

				String trimmedLine = StringUtil.trimLeading(line);

				if (sortAttributes) {
					if (trimmedLine.startsWith(StringPool.LESS_THAN) &&
						trimmedLine.endsWith(StringPool.GREATER_THAN) &&
						!trimmedLine.startsWith("<?") &&
						!trimmedLine.startsWith("<%") &&
						!trimmedLine.startsWith("<!") &&
						!(line.contains("<![CDATA[") && line.contains("]]>"))) {

						line = formatTagAttributes(
							fileName, line, trimmedLine, lineCount, true);
					}
					else if (trimmedLine.startsWith("<![CDATA[") &&
							 !trimmedLine.endsWith("]]>")) {

						sortAttributes = false;
					}
				}
				else if (trimmedLine.endsWith("]]>")) {
					sortAttributes = true;
				}

				sb.append(line);
				sb.append("\n");
			}
		}

		content = sb.toString();

		if (content.endsWith("\n")) {
			content = content.substring(0, content.length() - 1);
		}

		return content;
	}

}