2 * Copyright © 2017 Orange, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.transportpce.pce;
10 import java.io.Serializable;
11 import java.util.Comparator;
16 * @author Martial Coulibaly ( martial.coulibaly@gfi.com ) on behalf of Orange
19 public class SortPortsByName implements Comparator<String>, Serializable {
21 private static final long serialVersionUID = 1L;
24 public int compare(String port1, String port2) {
25 int num = extractInt(port1) - extractInt(port2);
26 int letter = extractString(port1).compareToIgnoreCase(extractString(port2));
27 int diff = port1.length() - port2.length();
28 if ((diff == 0) || (Math.abs(diff) == 1)) {
35 int extractInt(String name) {
36 String num = name.replaceAll("\\D", "");
37 // return 0 if no digits found
38 return num.isEmpty() ? 0 : Integer.parseInt(num);
41 String extractString(String name) {
42 String letter = name.replaceAll("\\d", "");
43 return (letter != null) ? letter : "";