/*

  * Entagged Audio Tag library

  * Copyright (c) 2003-2005 Rapha�l Slinckx <raphael@slinckx.net>

  * 

  * This library is free software; you can redistribute it and/or

  * modify it under the terms of the GNU Lesser General Public

  * License as published by the Free Software Foundation; either

  * version 2.1 of the License, or (at your option) any later version.

  *  

  * This library is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  * Lesser General Public License for more details.

  * 

  * You should have received a copy of the GNU Lesser General Public

  * License along with this library; if not, write to the Free Software

  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

  */

 package org.jaudiotagger.audio;

 import org.jaudiotagger.audio.generic.Utils;

 import java.io.FileFilter;

 import java.io.File;

 /**

  * <p>This is a simple FileFilter that will only allow the file supported by this library.</p>

  * <p>It will also accept directories. An additional condition is that file must be readable (read permission) and

  * are not hidden (dot files, or hidden files)</p>

  *

  * @author Raphael Slinckx

  * @version $Id: AudioFileFilter.java,v 1.3 2008/02/11 14:35:51 paultaylor Exp $

  * @since v0.01

  */

 public class AudioFileFilter implements FileFilter

 {

     /**

      * <p>Check whether the given file meet the required conditions (supported by the library OR directory).

      * The File must also be readable and not hidden.</p>

      *

      * @param    f    The file to test

      * @return a boolean indicating if the file is accepted or not

      */

     public boolean accept(File f)

     {

         if (f.isHidden() || !f.canRead())

         {

             return false;

         }

         if (f.isDirectory())

         {

             return true;

         }

         String ext = Utils.getExtension(f);

         try

         {

             if (SupportedFileFormat.valueOf(ext.toUpperCase()) != null)

             {

                 return true;

             }

         }

         catch(IllegalArgumentException iae)

         {

             //Not known enum value

             return false;    

         }

         return false;

         }

 }