| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.felix.shell.impl; |
| |
| import java.io.PrintStream; |
| import java.util.Iterator; |
| import java.util.StringTokenizer; |
| |
| import org.apache.felix.shell.Command; |
| |
| /** |
| * Command to display, set and modify system properties |
| * Usage: |
| * sysprop -> displays all the system properties |
| * sysprop [key] -> displays the [key] property |
| * sysprop -r [key] -> removes the [key] property |
| * sysprop [key] [value] -> set the property [key] to [value] |
| */ |
| public class SystemPropertiesCommandImpl implements Command |
| { |
| private static final String REMOVE_PROP_SWITCH = "-r"; |
| |
| public void execute(String line, PrintStream out, PrintStream err) |
| { |
| StringTokenizer st = new StringTokenizer(line); |
| int tokens = st.countTokens(); |
| |
| if (tokens == 1) |
| { |
| printAll(out); |
| } |
| else |
| { |
| st.nextToken(); |
| String secondArgument = st.nextToken(); |
| |
| if (tokens == 2) |
| { |
| out.println(secondArgument + "=" + System.getProperty(secondArgument)); |
| } |
| else if (tokens == 3) |
| { |
| if (REMOVE_PROP_SWITCH.equals(secondArgument)) |
| { |
| removeProperty(st.nextToken()); |
| } |
| else |
| { |
| String value = st.nextToken(); |
| System.setProperty(secondArgument, value); |
| out.println("Set " + secondArgument + "=" + value); |
| } |
| } |
| } |
| } |
| |
| private void printAll(PrintStream out) |
| { |
| out.println("-------System properties------"); |
| for (Iterator keyIterator = System.getProperties().keySet().iterator(); keyIterator.hasNext(); ) |
| { |
| Object key = keyIterator.next(); |
| out.println(key.toString() + "=" + System.getProperty(key.toString())); |
| } |
| } |
| |
| private void removeProperty(String key) |
| { |
| System.getProperties().remove(key); |
| } |
| |
| public String getName() |
| { |
| return "sysprop"; |
| } |
| |
| public String getShortDescription() |
| { |
| return "Display, set, modify and remove system properties"; |
| } |
| |
| public String getUsage() |
| { |
| return "sysprop [-r] [<key>] [<value>]"; |
| } |
| } |