001/*
002 * (C) Copyright 2006-2010 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     bstefanescu
018 */
019package org.nuxeo.shell.cmds;
020
021import org.nuxeo.shell.Argument;
022import org.nuxeo.shell.Command;
023import org.nuxeo.shell.CommandRegistry;
024import org.nuxeo.shell.Context;
025import org.nuxeo.shell.Shell;
026
027/**
028 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
029 */
030@Command(name = "use", help = "Switch the current command namespace. If no namespace is specified the current namepsace name is printed.")
031public class Use implements Runnable {
032
033    @Context
034    protected Shell shell;
035
036    @Argument(name = "name", index = 0, required = false, help = "The command namespace to use")
037    protected String name;
038
039    public void run() {
040        if (name != null) {
041            CommandRegistry old = shell.setActiveRegistry(name);
042            if (old != null) {
043                shell.getConsole().println(old.getName() + " -> " + name);
044            }
045        } else {
046            shell.getConsole().println(shell.getActiveRegistry().getName());
047        }
048    }
049}