arfffilter.java

Short description: GUI Ant-Miner is a tool for extracting classification rules from data. It is an u

package guiAntMiner;
import java.io.File;

import javax.swing.filechooser.FileFilter;

/**
 * Copyright (C) 2006  Fernando Meyer
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program 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 General Public License for more details.
 * 
 * A full copy of the license is available in gpl.txt and online at
 * http://www.gnu.org/licenses/gpl.txt
 */

public class ArffFilter extends FileFilter {
//	Accept all directories and arff data files.
    public boolean accept(File f) {
        if (f.isDirectory()) {
            return true;
        }

        String extension = getExtension(f);
        if (extension != null) {
            if (extension.equals("arff"))
                    return true;
            else
                return false;
        }

        return false;
    }

    /* (non-Javadoc)
     * @see javax.swing.filechooser.FileFilter#getDescription()
     */
    public String getDescription() {
        return "Arff Data Files (*.arff)";
    }
    
    public static String getExtension(File f) {
        String ext = null;
        String s = f.getName();
        int i = s.lastIndexOf('.');

        if (i > 0 &&  i < s.length() - 1) {
            ext = s.substring(i+1).toLowerCase();
        }
        return ext;
    }
}