/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright (c) 2009-2010 Oracle and/or its affiliates. All rights reserved. * * The contents of this file are subject to the terms of either the GNU * General Public License Version 2 only ("GPL") or the Common Development * and Distribution License("CDDL") (collectively, the "License"). You * may not use this file except in compliance with the License. You can * obtain a copy of the License at * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html * or packager/legal/LICENSE.txt. See the License for the specific * language governing permissions and limitations under the License. * * When distributing the software, include this License Header Notice in each * file and include the License file at packager/legal/LICENSE.txt. * * GPL Classpath Exception: * Oracle designates this particular file as subject to the "Classpath" * exception as provided by Oracle in the GPL Version 2 section of the License * file that accompanied this code. * * Modifications: * If applicable, add the following below the License Header, with the fields * enclosed by brackets [] replaced by your own identifying information: * "Portions Copyright [year] [name of copyright owner]" * * Contributor(s): * If you wish your version of this file to be governed by only the CDDL or * only the GPL Version 2, indicate your decision by adding "[Contributor] * elects to include this software in this distribution under the [CDDL or GPL * Version 2] license." If you don't indicate a single choice of license, a * recipient has the option to distribute your version of this file under * either the CDDL, the GPL Version 2 or to extend the choice of license to * its licensees as provided above. However, if you add GPL Version 2 code * and therefore, elected the GPL Version 2 license, then the option applies * only if the new code is made subject to such option by the copyright * holder. */ package com.sun.enterprise.universal; import java.util.*; /** * * @author Byron Nevins */ public class PropertiesDecoder { /** * There are several CLI commands that take properties arguments. The properties * are "flattened". This class will unflatten them back into a Map for you. * <p>Example Input: <b>foo=goo:xyz:hoo=ioo</b> * <p>Output would be 3 pairs: * <ul> * <li>foo, goo * <li>xyz, null * <li>hoo, ioo * </ul> * @param props The flattened string properties * @return A Map of the String keys and values. It will return an */ public static Map<String,String> unflatten(final String s) { if(!ok(s)) return Collections.emptyMap(); Map<String,String> map = new HashMap<String,String>(); String[] elements = s.split(":"); for(String element : elements) { addPair(map, element); } return map; } private static void addPair(Map<String, String> map, String element) { // TODO this method is a perfect candidate for unit tests... // note: It is quite tricky and delicate finding every possible weirdness // that a user is capable of! // element is one of these: // 0. "" // 1. "foo" // 2. "foo=goo" // 3. "foo=" // if we get garbage like a=b=c=d we change to "a", "b=c=d" // 0. if(!ok(element)) return; // no harm, no foul int index = element.indexOf("="); // 1. if(index < 0) map.put(element, null); // 3. else if(element.length() - 1 <= index ) { // lose the '=' map.put(element.substring(0, index), null); } // 2 else // guarantee: at least one char after the '=' map.put(element.substring(0, index), element.substring(index + 1)); } private static boolean ok(String s) { return s != null && s.length() > 0; } }