StringLengthComparator.java |
1 /* 2 * Licensed under the Apache License, Version 2.0 (the "License"); 3 * you may not use this file except in compliance with the License. 4 * You may obtain a copy of the License at 5 * 6 * http://www.apache.org/licenses/LICENSE-2.0 7 * 8 * Unless required by applicable law or agreed to in writing, software 9 * distributed under the License is distributed on an "AS IS" BASIS, 10 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 11 * See the License for the specific language governing permissions and 12 * limitations under the License. 13 */ 14 15package org.tp23.antinstaller.runtime.logic; 16 17import java.util.Comparator; 18 19import org.apache.tools.ant.taskdefs.Length; 20 21/** 22 * Compare strings based on their length. Used by ExpressionBuilder to ensure 23 * that longest match is attempted first. 24 * 25 * @author mwilson 26 * @version $Id: StringLengthComparator.java,v 1.1 2006/09/08 19:16:31 27 * anothermwilson Exp $ 28 * @since 0.7.4 patch 2 29 */ 30 31public class StringLengthComparator implements Comparator { 32 33 /** 34 * Sort by descending String length 35 * 36 * @param o1 first string 37 * @param o2 second string 38 * @return difference between the length of o2 and o1 39 */ 40 public int compare(Object o1, Object o2) { 41 String str1 = (String) o1; 42 String str2 = (String) o2; 43 return (str2.length() - str1.length()); 44 } 45 46} 47