/*
* $Id: MatricesCompartor.java,v 1.1 2005/05/25 19:56:30 ahmed Exp $
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
package jaligner.matrix;
import java.util.Comparator;
/**
* Comparator to sort the scoring matrices by their names.
*
* @author Ahmed Moustafa (ahmed@users.sf.net)
*/
public class MatricesCompartor implements Comparator {
/* (non-Javadoc)
* @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)
*/
public int compare(Object o1, Object o2) {
String s1 = (String) o1;
String s2 = (String) o2;
int index1 = firstDigitIndex(s1);
int index2 = firstDigitIndex(s2);
if (index1 == -1 || index2 == -1) {
return s1.compareToIgnoreCase(s2);
} else {
String s3 = s1.substring(0, index1);
String s4 = s2.substring(0, index2);
if (s3.equalsIgnoreCase(s4)) {
return new Integer(s1.substring(index1)).compareTo(new Integer(s2.substring(index2)));
} else {
return s1.compareToIgnoreCase(s2);
}
}
}
/**
* Returns the index of the first digit in a String.
* If there are no digits, returns -1.
* @param s String to be searched for the digits in
* @return int
*/
private int firstDigitIndex (String s) {
for (int i = 0; i < s.length(); i++) {
if (s.charAt(i) >= '0' && s.charAt(i) <= '9') {
return i;
}
}
return -1;
}
}