Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;

public class Main {
    /**
     * @param n1 first Node to test
     * @param n2 second Node to test
     * @return true if a deep compare show the same children and attributes in the same order
     */
    public static boolean equals(Node n1, Node n2) {
        // compare type
        if (!n1.getNodeName().equals(n2.getNodeName()))
            return false;
        // compare attributes
        NamedNodeMap nnm1 = n1.getAttributes();
        NamedNodeMap nnm2 = n2.getAttributes();
        if (nnm1.getLength() != nnm2.getLength())
            return false;
        for (int i = 0; i < nnm1.getLength(); i++) {
            Node attr1 = nnm1.item(i);
            if (!getAttribute(n1, attr1.getNodeName()).equals(getAttribute(n2, attr1.getNodeName())))
                return false;
        }
        // compare children
        Node c1 = n1.getFirstChild();
        Node c2 = n2.getFirstChild();
        for (;;) {
            while ((c1 != null) && c1.getNodeName().startsWith("#"))
                c1 = c1.getNextSibling();
            while ((c2 != null) && c2.getNodeName().startsWith("#"))
                c2 = c2.getNextSibling();
            if ((c1 == null) && (c2 == null))
                break;
            if ((c1 == null) || (c2 == null))
                return false;
            if (!equals(c1, c2))
                return false;
            c1 = c1.getNextSibling();
            c2 = c2.getNextSibling();
        }
        return true;
    }

    /**
     * @param n Node to examine
     * @param attr Attribute to look for
     * @param def Default value to return if attribute is not present
     * @return if the Node contains the named Attribute, the value, if not, the def parameter
     */
    public static String getAttribute(Node n, String attr, String def) {
        NamedNodeMap attrs = n.getAttributes();
        if (attrs == null)
            return def;
        Node ret = attrs.getNamedItem(attr);
        if (ret == null)
            return def;
        else
            return ret.getNodeValue();
    }

    /**
     * @param n Node to examine
     * @param attr Attribute to look for
     * @return if the Node contains the named Attribute, the value, if not, empty string
     */
    public static String getAttribute(Node n, String attr) {
        return getAttribute(n, attr, "");
    }
}