/*
* Copyright (c) 2001 Sun Microsystems, Inc. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Sun Microsystems, Inc. for Project JXTA."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact Project JXTA at http://www.jxta.org.
*
* 5. Products derived from this software may not be called "JXTA",
* nor may "JXTA" appear in their name, without prior written
* permission of Sun.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL SUN MICROSYSTEMS OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of Project JXTA. For more
* information on Project JXTA, please see
* <http://www.jxta.org/>.
*
* This license is based on the BSD license adopted by the Apache Foundation.
*
* $Id: chpgrp.java,v 1.17 2007/02/09 23:12:53 hamada Exp $
*/
package net.jxta.impl.shell.bin.chpgrp;
import net.jxta.impl.shell.*;
import net.jxta.impl.shell.bin.Shell.Shell;
import net.jxta.peergroup.PeerGroup;
import java.util.Enumeration;
/**
* This command changes the ShellObject associated with the 'stdgroup' Object.
*/
public class chpgrp extends ShellApp {
/**
* {@inheritDoc}
*/
public int startApp(String[] argv) {
ShellEnv env = getEnv();
boolean parent = false;
GetOpt options = new GetOpt(argv, 0, "p");
while (true) {
int option;
try {
option = options.getNextOption();
} catch (IllegalArgumentException badopt) {
consoleMessage("Illegal argument :" + badopt);
return syntaxError();
}
if (-1 == option) {
break;
}
switch (option) {
case'p':
parent = true;
break;
default:
consoleMessage("Unrecognized option");
return syntaxError();
}
}
String newgroup = null;
if (!parent) {
newgroup = options.getNextParameter();
} else {
ShellObject<PeerGroup> obj = (ShellObject<PeerGroup>) env.get("stdgroup");
PeerGroup me = obj.getObject();
PeerGroup myParent = me.getParentGroup();
Enumeration<String> eachEnv = env.elements();
while (eachEnv.hasMoreElements()) {
String anEnv = eachEnv.nextElement();
ShellObject<?> anObj = env.get(anEnv);
if ((null != anObj) && (anObj.getObject() instanceof PeerGroup)) {
PeerGroup check = (PeerGroup) anObj.getObject();
if (myParent.getPeerGroupID().equals(check.getPeerGroupID())) {
newgroup = anEnv;
break;
}
}
}
if (null == newgroup) {
consoleMessage("Cannot change to parent group. No suitable environment variable");
return syntaxError();
}
}
if (null != options.getNextParameter()) {
consoleMessage("Unsupported parameter");
return syntaxError();
}
if (null == newgroup) {
// list all the active peerGroups
PeerGroup current = (PeerGroup) env.get("stdgroup").getObject();
Enumeration<String> eachEnv = env.elements();
while (eachEnv.hasMoreElements()) {
String anEnv =eachEnv.nextElement();
ShellObject<?> anObj = env.get(anEnv);
if ((null != anObj) && (anObj.getObject() instanceof PeerGroup)) {
print(anEnv);
PeerGroup check = (PeerGroup) anObj.getObject();
String name = check.getPeerGroupName();
if (null == name) {
name = check.getPeerGroupID().toString();
}
print("\t\"" + name + "\"");
if (current.getPeerGroupID().equals(check.getPeerGroupID())) {
print("\t(current)"); // mark this as the current group
}
println(" ");
}
}
return ShellApp.appNoError;
}
// ok switch to the new group
ShellObject<PeerGroup> obj = (ShellObject<PeerGroup>) env.get(newgroup);
if (null == obj) {
consoleMessage("The object '" + newgroup + "' does not exist.");
return syntaxError();
}
if (!PeerGroup.class.isInstance(obj.getObject())) {
consoleMessage("The object '" + newgroup + "' is not a PeerGroup object");
return syntaxError();
}
env.add("stdgroup", obj);
// if this is a root shell then change the status group.
ShellObject<ShellConsole> consoleObject = (ShellObject<ShellConsole>) env.get("console");
ShellObject<Shell> shellObject = (ShellObject<Shell>) env.get("shell");
if ((null != consoleObject) && (null != shellObject)) {
Shell shell = shellObject.getObject();
ShellConsole console = consoleObject.getObject();
if (shell.isRootShell()) {
console.setStatusGroup(obj.getObject());
}
}
return ShellApp.appNoError;
}
/**
* Prints out an error message, if the input command line parameters are wrong
*/
private int syntaxError() {
consoleMessage("Usage: chpgrp [-p | <env>]");
return ShellApp.appParamError;
}
/**
* {@inheritDoc}
*/
@Override
public String getDescription() {
return "Change the current peer group";
}
/**
* {@inheritDoc}
*/
@Override
public void help() {
println("NAME");
println(" chpgrp - " + getDescription());
println(" ");
println("SYNOPSIS");
println(" ");
println(" chpgrp [-p | <env>]");
println(" ");
println("DESCRIPTION");
println(" ");
println("The 'chpgrp' command is used to switch the default Shell peer");
println("group 'stdgroup' variable to another group that was previously");
println("joined via a 'join' command. The 'join' command is used to join");
println("a peergroup.");
println(" ");
println("After changing groups, the Shell 'stdgroup' variable is set to ");
println("the value of the new peer group joined.");
println(" ");
println("OPTIONS");
println(" ");
println(" [-p] Change to this peer group's parent peer group.");
println(" ");
println("EXAMPLE");
println(" ");
println(" JXTA>mygroupadv = newpgrp -n mygroup");
println(" JXTA>join -d mygroupadv");
println(" JXTA>chpgrp moi");
println(" ");
println(" This creates a new peergroup which is cloning the services");
println(" of the parent peer group. You can find the services of the");
println(" current peer group via the command 'whoami -g'. The new group");
println(" is given the name 'mygroup'. Before you can do anything with");
println(" the group you need to join the group via the 'join' command.");
println(" The 'chpgrp' command is used to change the default group");
println(" to the group 'moi'.");
println(" ");
println("SEE ALSO");
println(" mkadv newpgrp join leave");
}
}