/*******************************************************************************
* Copyright (c) 2008, 2015 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.help.internal.index;
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 IndexDocumentReader extends DocumentReader {
@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 ("topic".equalsIgnoreCase(kind)) { //$NON-NLS-1$
fixTopicAttributes((Element)node);
}
prune(node);
node = node.getNextSibling();
} else {
node = node.getNextSibling();
}
}
}
private void fixTopicAttributes(Element topic) {
String title = topic.getAttribute("name"); //$NON-NLS-1$
if (title != null && title.length() > 0) {
topic.setAttribute("label", title); //$NON-NLS-1$
topic.removeAttribute("name"); //$NON-NLS-1$
}
}
}