/*
 * Copyright (c) 1999 Rob Quince
 * Author: Rob Quince
 * EMail : robq@fiendish.demoncouk
 * 
 * Permission is hereby granted, without written agreement and without
 * license or royalty fees, to use, copy, modify, and distribute this
 * software and its documentation for any purpose, provided that the
 * above copyright notice and the following two paragraphs appear in all
 * copies of this software and that no charge is made for the software.
 * 
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE TO ANY PARTY FOR DIRECT,
 * INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE
 * AUTHOR HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 * THE AUTHOR SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT
 * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER
 * IS ON AN "AS IS" BASIS, AND THE AUTHOR HAS NO OBLIGATION TO PROVIDE
 * MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
 * 
 */

package ramicro.directory;

import java.io.*;
import java.util.Vector;

class Lister implements FilenameFilter {

  // Include a main in order that this class
  // can be run by itself to list a directory
  public static void main(String[] args) {
    Lister dirList;
    try {
        if (args.length == 0)
          dirList = new Lister(".");
        else
          if (args.length == 1)
            dirList = new Lister(args[0]);
          else
            dirList = new Lister(args[0], args);
        for (int i = 0; i < dirList.files.size(); i++)
          System.out.println(dirList.files.elementAt(i));
        } catch (IOException io) { System.err.println(io); }
  }

  // Filtering lister filtering starts at
  // filter[1] to enable simple argument vector
  // passing
  public Lister(String dirName, String[] filter) throws IOException {
    String[] fArray;
    
    dir = new File(dirName);
    if (!dir.isDirectory()) throw new IOException("Is not a directory");
    for (int f = 1; f < filter.length; f++)
      {
      dirFilter = filter[f];
      fArray = dir.list(this);
      for (int i = 0; i < fArray.length; i++)
        insertAlpha(fArray[i]);
      }
  }
  public Lister(String dirName) throws IOException {
    String[] fArray;
    dir = new File(dirName);
    if (!dir.isDirectory()) throw new IOException("Is not a directory");
    fArray = dir.list();
    for (int i = 0; i < fArray.length; i++)
      insertAlpha(fArray[i]);
  }
  // For the FilenameFilter interface
  public boolean accept(File d, String n) {
    return n.toLowerCase().endsWith(dirFilter);
  }
  // Simple alpha sorting right now
  private void insertAlpha(String name) {
    for (int i = 0; i < files.size(); i++)
      if (((String )files.elementAt(i)).compareTo(name) > 0)
        {
        files.insertElementAt(name, i);
        return;
        }
    files.addElement(name);
  }

// Make the files vector public for now  
public  Vector files = new Vector(20, 20);
private File   dir;
private String dirFilter;
}