com.vaushell.tools.xmldirtyparser.XMLPath.java Source code

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Here is the source code for com.vaushell.tools.xmldirtyparser.XMLPath.java

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/*******************************************************************************
 * Copyright 2012 - VAUSHELL - contact@vaushell.com
 * 
 * Licensed 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.
 ******************************************************************************/
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 * and open the template in the editor.
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package com.vaushell.tools.xmldirtyparser;

import java.util.Iterator;
import java.util.LinkedList;

import org.apache.commons.lang.StringUtils;

/**
 * 
 * @author Fabien Vauchelles <fabien at vauchelles dot com>
 */
public class XMLPath implements Comparable<XMLPath> {
    // PUBLIC
    public XMLPath() {
        init();
    }

    public XMLPath(String path) {
        init();

        for (String element : StringUtils.split(path, "/")) {
            if (element.startsWith("@")) {
                addElementLast(new XMLPathProperty(element.substring(1)));
            } else {
                addElementLast(new XMLPathElement(element));
            }
        }
    }

    public void addElementLast(XMLPathElement element) {
        elements.add(element);
    }

    @Override
    public int compareTo(XMLPath o) {
        Iterator<XMLPathElement> local = elements.iterator();
        Iterator<XMLPathElement> external = o.elements.iterator();

        while (true) {
            if (local.hasNext()) {
                if (external.hasNext()) {
                    XMLPathElement localE = local.next();
                    XMLPathElement externalE = external.next();
                    int cmp = localE.compareTo(externalE);

                    if (cmp != 0) {
                        return cmp;
                    }
                } else {
                    return 1;
                }
            } else {
                if (external.hasNext()) {
                    return -1;
                } else {
                    return 0;
                }
            }
        }
    }

    public void removeElementLast() {
        elements.removeLast();
    }

    public void removeElementLast(XMLPathElement element) {
        int ind = elements.size() - 1;

        while (ind >= 0) {
            if (elements.get(ind).compareTo(element) == 0) {
                break;
            }
        }

        if (ind > 0) {
            for (int i = elements.size() - 1; i >= ind; i--) {
                removeElementLast();
            }
        }
    }

    @Override
    public String toString() {
        return StringUtils.join(elements, "/");
    }

    private void init() {
        elements = new LinkedList<XMLPathElement>();
        addElementLast(new XMLPathElement(""));
    }

    // PRIVATE
    private LinkedList<XMLPathElement> elements;
}