Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
/**
 * Copyright 2003, 2004  ONCE Corporation
 *
 * LICENSE:
 * This file is part of BuilditMPI. It may be redistributed and/or modified
 * under the terms of the Common Public License, version 1.0.
 * You should have received a copy of the Common Public License along with this
 * software. See LICENSE.txt for details. Otherwise, you may find it online at:
 *   http://www.oncecorp.com/CPL10/ or http://opensource.org/licenses/cpl.php
 *
 * DISCLAIMER OF WARRANTIES AND LIABILITY:
 * THE SOFTWARE IS PROVIDED "AS IS".  THE AUTHOR MAKES NO REPRESENTATIONS OR
 * WARRANTIES, EITHER EXPRESS OR IMPLIED.  TO THE EXTENT NOT PROHIBITED BY LAW,
 * IN NO EVENT WILL THE AUTHOR BE LIABLE FOR ANY DAMAGES, INCLUDING WITHOUT
 * LIMITATION, LOST REVENUE, PROFITS OR DATA, OR FOR SPECIAL, INDIRECT,
 * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS
 * OF THE THEORY OF LIABILITY, ARISING OUT OF OR RELATED TO ANY FURNISHING,
 * PRACTICING, MODIFYING OR ANY USE OF THE SOFTWARE, EVEN IF THE AUTHOR HAVE
 * BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 *
 * -----------------------------------------------------
 * $Id$
 */

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

public class Main {
    /**
     * This method returns the first element text from the document.
     * @param document The document.
     * @param tagName The element name.
     * @return The text contained in the first element.
     */
    public static String getFirstElementText(Document document, String tagName) {
        Element element = getFirstElement(document, tagName);
        if (element != null) {
            return getText(element);
        } else {
            return null;
        }
    }

    /**
     * This method returns the first element from the document.
     * @param document The document.
     * @param tagName The element name.
     * @return The element object.
     */
    public static Element getFirstElement(Document document, String tagName) {
        NodeList nodes = document.getElementsByTagName(tagName);
        if (nodes != null && nodes.getLength() != 0) {
            return (Element) nodes.item(0);
        } else {
            return null;
        }
    }

    /**
     * Looks for a text child node and returns its value.
     *
     * @param tag - XML element
     * @return - the text String of the tag
     */
    public static String getText(final Element tag) {
        if (tag == null)
            return null;

        NodeList lst = tag.getChildNodes();
        StringBuffer buf = new StringBuffer();

        for (int Index = 0, Cnt = lst.getLength(); Index < Cnt; Index++) {
            if (lst.item(Index).getNodeType() == Node.ENTITY_REFERENCE_NODE) {
                buf.append(lst.item(Index).getChildNodes().item(0).getNodeValue());
            }
            if ((lst.item(Index).getNodeType() == Node.TEXT_NODE)
                    || (lst.item(Index).getNodeType() == Node.CDATA_SECTION_NODE)) {
                buf.append(lst.item(Index).getNodeValue());
            }
        }

        if (buf.length() == 0)
            return null;
        else
            return buf.toString();
    }
}