| /******************************************************************************* |
| * Copyright (c) 2010, 2015 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.help.internal.criteria; |
| |
| import org.eclipse.help.internal.dynamic.DocumentReader; |
| import org.w3c.dom.Document; |
| import org.w3c.dom.Element; |
| import org.w3c.dom.Node; |
| import org.w3c.dom.NodeList; |
| |
| public class CriteriaDefinitionDocumentReader extends DocumentReader { |
| |
| private static final String CRITERION_ELEMENT = "criterion"; //$NON-NLS-1$ |
| private static final String CRITERION_ID_ATTRIBUTE = "id"; //$NON-NLS-1$ |
| |
| |
| @Override |
| protected void prepareDocument(Document document) { |
| prune(document.getDocumentElement()); |
| } |
| |
| private void prune(Node element) { |
| NodeList nodes = element.getChildNodes(); |
| Node node = nodes.item(0); |
| while (node != null) { |
| short nodeType = node.getNodeType(); |
| if (nodeType == Node.TEXT_NODE || nodeType == Node.COMMENT_NODE) { |
| Node nodeToDelete = node; |
| node = node.getNextSibling(); |
| element.removeChild(nodeToDelete); |
| } else if (nodeType == Node.ELEMENT_NODE) { |
| String kind = node.getNodeName(); |
| if (CRITERION_ELEMENT.equalsIgnoreCase(kind)) { |
| fixCriterionId((Element)node); |
| } |
| prune(node); |
| node = node.getNextSibling(); |
| } else { |
| node = node.getNextSibling(); |
| } |
| } |
| } |
| |
| /* |
| * Cause criterion ID is case insensitive, so just change it to lower case. |
| */ |
| private void fixCriterionId(Element criterion) { |
| String id = criterion.getAttribute(CRITERION_ID_ATTRIBUTE); |
| if (id != null && id.length() > 0) { |
| criterion.setAttribute(CRITERION_ID_ATTRIBUTE, id.toLowerCase()); |
| } |
| } |
| } |