Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.util.ArrayList;

import org.w3c.dom.Attr;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;

public class Main {
    public static void stripDuplicateAttributes(Node node, Node parent) {

        // The output depends on the type of the node
        switch (node.getNodeType()) {
        case Node.DOCUMENT_NODE: {
            Document doc = (Document) node;
            Node child = doc.getFirstChild();
            while (child != null) {
                stripDuplicateAttributes(child, node);
                child = child.getNextSibling();
            }
            break;
        }

        case Node.ELEMENT_NODE: {
            Element elt = (Element) node;
            NamedNodeMap attrs = elt.getAttributes();

            ArrayList nodesToRemove = new ArrayList();
            int nodesToRemoveNum = 0;

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

                for (int j = 0; j < attrs.getLength(); j++) {
                    final Node b = attrs.item(j);

                    //if there are two attributes with same name
                    if (i != j && (a.getNodeName().equals(b.getNodeName()))) {
                        nodesToRemove.add(b);
                        nodesToRemoveNum++;
                    }
                }
            }

            for (int i = 0; i < nodesToRemoveNum; i++) {
                Attr nodeToDelete = (Attr) nodesToRemove.get(i);
                Element nodeToDeleteParent = (Element) node; // nodeToDelete.getParentNode();
                nodeToDeleteParent.removeAttributeNode(nodeToDelete);
            }

            nodesToRemove.clear();

            Node child = elt.getFirstChild();
            while (child != null) {
                stripDuplicateAttributes(child, node);
                child = child.getNextSibling();
            }

            break;
        }

        default:
            //do nothing
            break;
        }
    }
}