com.npower.dm.util.XMLPrettyFormatter.java Source code

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Here is the source code for com.npower.dm.util.XMLPrettyFormatter.java

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/**
  * $Header: /home/master/nWave-DM-Common/src/com/npower/dm/util/XMLPrettyFormatter.java,v 1.3 2007/01/29 09:15:56 zhao Exp $
  * $Revision: 1.3 $
  * $Date: 2007/01/29 09:15:56 $
  *
  * ===============================================================================================
  * License, Version 1.1
  *
  * Copyright (c) 1994-2006 NPower Network Software Ltd.  All rights reserved.
  *
  * This SOURCE CODE FILE, which has been provided by NPower as part
  * of a NPower product for use ONLY by licensed users of the product,
  * includes CONFIDENTIAL and PROPRIETARY information of NPower.
  *
  * USE OF THIS SOFTWARE IS GOVERNED BY THE TERMS AND CONDITIONS
  * OF THE LICENSE STATEMENT AND LIMITED WARRANTY FURNISHED WITH
  * THE PRODUCT.
  *
  * IN PARTICULAR, YOU WILL INDEMNIFY AND HOLD NPower, ITS RELATED
  * COMPANIES AND ITS SUPPLIERS, HARMLESS FROM AND AGAINST ANY CLAIMS
  * OR LIABILITIES ARISING OUT OF THE USE, REPRODUCTION, OR DISTRIBUTION
  * OF YOUR PROGRAMS, INCLUDING ANY CLAIMS OR LIABILITIES ARISING OUT OF
  * OR RESULTING FROM THE USE, MODIFICATION, OR DISTRIBUTION OF PROGRAMS
  * OR FILES CREATED FROM, BASED ON, AND/OR DERIVED FROM THIS SOURCE
  * CODE FILE.
  * ===============================================================================================
  */
package com.npower.dm.util;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.Reader;
import java.io.StringReader;
import java.io.StringWriter;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;

/**
 * @author Zhao DongLu
 * @version $Revision: 1.3 $ $Date: 2007/01/29 09:15:56 $
 */
public class XMLPrettyFormatter {

    private static Log log = LogFactory.getLog(XMLPrettyFormatter.class);

    private Document document = null;

    /**
     * Constructor from a XML String
     * @param xmlText
     * @throws DocumentException
     */
    public XMLPrettyFormatter(String xmlText) throws DocumentException {
        super();
        StringReader reader = new StringReader(xmlText);
        this.document = this.loadDocument(reader);
    }

    /**
     * Constructor from a XML file
     * @param xmlFile
     * @throws FileNotFoundException
     * @throws DocumentException
     */
    public XMLPrettyFormatter(File xmlFile) throws FileNotFoundException, DocumentException {
        super();
        this.document = this.loadDocument(new FileReader(xmlFile));
    }

    private Document loadDocument(Reader reader) throws DocumentException {
        SAXReader saxReader = new SAXReader();
        Document xmlDocument = saxReader.read(reader);
        return xmlDocument;
    }

    /**
     * Format the xml to pretty print format.
     * @return
     * @throws IOException
     */
    public String format() throws IOException {

        StringWriter writer = new StringWriter();
        OutputFormat format = OutputFormat.createPrettyPrint();
        XMLWriter xmlwriter = new XMLWriter(writer, format);
        xmlwriter.write(this.document);
        return writer.toString();

    }

    /**
     * TestCase & Demo.
     * @param args
     */
    public static void main(String[] args) {
        try {
            //String text = "<A><B></B></A>";
            //XMLPrettyFormatter formatter = new XMLPrettyFormatter(text);
            File file = new File("D:/Zhao/MyWorkspace/nWave-DM-Common/metadata/ddf/sony_ericsson/M600_DDF.xml");
            XMLPrettyFormatter formatter = new XMLPrettyFormatter(file);
            String result = formatter.format();
            FileOutputStream out = new FileOutputStream("C:/temp/M600_DDF.xml");
            out.write(result.getBytes());
            out.close();
        } catch (DocumentException e) {
            log.info("XMLPrettyFormatter:" + e);
        } catch (IOException e) {
            log.info("XMLPrettyFormatter:" + e);
        }
    }

}