Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * JLib - Publicitas Java library.
 *
 * Copyright (c) 2005, 2006, 2007, 2008 Publicitas SA.
 * Licensed under LGPL (LGPL-LICENSE.txt) license.
 */

import org.w3c.dom.Node;

public class Main {
    /**
     * Checks if a node has contents.
     * A node is considered as <i>having content</i> when:
     * <ul>
     *       <li>When the node or any of its childs contains a non-empty attribute.</li>
     *       <li>When the node or any of its childs contains non-empty text nodes. If the 
     *       parameter <b>ignoreBlankSpaces</b> is <i>true</i>, text nodes containing
     *       only control characters (ascii codes equal or smaller than 32) are considered
     *       empty.</li>
     * </ul>
     * Comment and processing instruction nodes are not considered as content.
     * @param x The node to check. If it is null, the method returns <i>false</i>.
     * @param ignoreBlankSpaces If <i>true</i> text nodes containing
     * only control characters (ascii codes equal or smaller than 32) are considered
     * empty.
     * @return <i>true</i> if the specified node has contents.
     */
    static public boolean NodeHasContent(Node x, boolean ignoreBlankSpaces) {
        int n, nn; // To parse child nodes of "x".
        Node child; // One of the childs of "x".
        int childType; // Type of the child node.
        String childContent; // When the child is a text node, its content.

        //.............................. Looks for "non-empty" nodes ...................
        if (x != null) {
            nn = x.getChildNodes().getLength();
            for (n = 0; n < nn; n++) {
                child = x.getChildNodes().item(n);
                childType = child.getNodeType();
                switch (childType) {
                // Nodes containing text:
                case Node.CDATA_SECTION_NODE:
                case Node.TEXT_NODE:
                    if (ignoreBlankSpaces)
                        childContent = child.getNodeValue().trim();
                    else
                        childContent = child.getNodeValue();
                    if (childContent.length() > 0)
                        return true;

                    // Elements (nodes containing nodes):
                case Node.ELEMENT_NODE:
                    if (NodeHasContent(child, ignoreBlankSpaces))
                        return true;

                    // Any other type of node are not considered as content:
                default:
                    continue;
                }
            }
        }
        //............................. If no "non-empty" node has been found ..........
        return false;
    }
}