/*
 * (C) Copyright IBM Corp. 2004.  All rights reserved.
 *
 * US Government Users Restricted Rights Use, duplication or
 * disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
 *
 * The program is provided "as is" without any warranty express or
 * implied, including the warranty of non-infringement and the implied
 * warranties of merchantibility and fitness for a particular purpose.
 * IBM will not be liable for any damages suffered by you as a result
 * of using the Program. In no event will IBM be liable for any
 * special, indirect or consequential damages or lost profits even if
 * IBM has been advised of the possibility of their occurrence. IBM
 * will not be liable for any third party claims against you.
 */

import java.io.File;
import java.io.IOException;
import java.util.List;
import java.util.ListIterator;
import org.jdom.DocType;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.input.SAXBuilder;
import org.jdom.output.XMLOutputter;

public class JdomSorter 
{
  public static void main(String[] argv) 
  {
    if (argv.length == 0 ||
        (argv.length == 1 && argv[0].equals("-help")))
    {
      System.out.println("\nUsage:  java JdomSorter uri");
      System.out.println("   where uri is the URI of your XML sonnet.");
      System.out.println("   Sample:  java JdomSorter sonnet.xml");
      System.out.println("\nUses the JDOM API to parse an XML sonnet, " +
                         "sorts the lines of the sonnet,");
      System.out.println("then writes the sorted sonnet " + 
                         "back to the console.");
      System.exit(1);
    }
        
    JdomSorter js = new JdomSorter();
    js.parseAndSortLines(argv[0]);
  }

  public void parseAndSortLines(String uri)
  {
    try
    {
      SAXBuilder sb = new SAXBuilder();
      Document doc = sb.build(new File(uri));
      sortLines(doc);
      XMLOutputter xo = new XMLOutputter();
      xo.setTrimAllWhite(true);
      xo.setIndent("  ");
      xo.setNewlines(true);
      xo.output(doc, System.out);
    }
    catch (Exception e)
    {
      e.printStackTrace();
    }
  }

  public void sortLines(Document sonnet)
  {
    Element linesElement = sonnet.getRootElement().
      getChild("lines");
    List lines = linesElement.getChildren("line");
    for (int i = 0; i < 14; i++)
      for (int j = 0; j < (14 - 1 - i); j++)
        if (((Element)lines.get(j)).getText().
            compareTo(((Element)lines.get(j+1)).getText())
            > 0)
          lines.add(j, lines.remove(j+1));
  }
}