Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/***********************************************************************************************************************
 * Copyright (c) 2008 empolis GmbH and brox IT Solutions GmbH. 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: Daniel Stucky (empolis GmbH) - initial API and implementation
 **********************************************************************************************************************/

import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

public class Main {
    /**
     * Traverses through a DOM tree starting at the given element and removes all those text-nodes from it that only
     * contain white spaces.
     * 
     * @param parent
     *          the parent Element
     */
    public static void removeWhitespaceTextNodes(Element parent) {
        final NodeList nl = parent.getChildNodes();

        for (int i = 0; i < nl.getLength(); i++) {
            final Node child = nl.item(i);

            if (child.getNodeType() == Node.TEXT_NODE) {
                if (child.getNodeValue().trim().length() == 0) {
                    parent.removeChild(child);
                    i--; // since the child is removed counting up must be made undone
                }
            } else if (child.getNodeType() == Node.ELEMENT_NODE && child.getChildNodes().getLength() > 0) {
                removeWhitespaceTextNodes((Element) child);
            }
        }
    }
}