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package org.eclipse.team.internal.ccvs.core.commands;

/*
 * (c) Copyright IBM Corp. 2000, 2001.
 * All Rights Reserved.
 */

import org.eclipse.team.internal.ccvs.core.util.Assert;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.team.internal.ccvs.core.CVSException;
import org.eclipse.team.internal.ccvs.core.Client;
import org.eclipse.team.internal.ccvs.core.requests.RequestSender;
import org.eclipse.team.internal.ccvs.core.resources.api.IManagedResource;
import org.eclipse.team.internal.ccvs.core.resources.api.IManagedVisitor;
import org.eclipse.team.internal.ccvs.core.response.ResponseDispatcher;
import org.eclipse.team.internal.ccvs.core.util.Util;

class Update extends Command {

	public Update(ResponseDispatcher responseDispatcher,
					RequestSender requestSender) {
		
		super(responseDispatcher,requestSender);
	}
	
	/**
	 * @see ICommand#getName()
	 */
	public String getName() {
		return RequestSender.UPDATE;
	}
	
	/**
	 * @see ICommand#getRequestName()
	 */
	public String getRequestName() {
		return RequestSender.UPDATE;
	}

	/**
	 * MV: Special case handling for the "." argument.
	 * 
	 */
//	protected IManagedResource[] getWorkResources() throws CVSException {
//		// NIK: Do we need this handling ?
//		// MV: You tell me!
//		if ((getArguments().length == 1) && (getArguments()[0].equals(".")))
//			return new IManagedResource[]{getRoot()};
//		return super.getWorkResources();
//	}
		
	public void sendRequestsToServer(IProgressMonitor monitor) throws CVSException {

		IManagedResource[] mWorkResources;
		
		Assert.isTrue(allResourcesManaged());
		
		// Get the folders we want to work on
		mWorkResources = getWorkResources();
		
		// FIXME other clients send this (wondering if we should as well):
		// requestSender.writeLine("UseUnchanged");
		// requestSender.writeLine("Case");
		// requestSender.sendArgument("-u");	
		
		// Send all folders that are already managed to the server
		// even folders that are empty
		sendFileStructure(mWorkResources,monitor,false,true);
		sendHomeFolder();
				
	}
	
	/**
	 * On sucessful finish, prune empty directories if 
	 * the -P option was specified.
	 */
	protected void finished(boolean success) throws CVSException {
		if (success && Util.isOption(getLocalOptions(), Client.PRUNE_OPTION)) {
			// Get the folders we want to work on
			IManagedResource[] mWorkResources = getWorkResources();
			// Delete empty directories
			IManagedVisitor visitor = new PruneFolderVisitor();
			for (int i=0; i<mWorkResources.length; i++) {
				mWorkResources[i].accept(visitor);
			}
		}	
	}
}


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