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/*******************************************************************************
* Copyright (c) 2000, 2003 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.team.internal.ccvs.core.client;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.team.internal.ccvs.core.*;
import org.eclipse.team.internal.ccvs.core.syncinfo.FolderSyncInfo;
import org.eclipse.team.internal.ccvs.core.util.Util;
/**
* Handles server responses that arise as a result of issuing a request
* (usually a command) to a CVS server. The processing of each such
* response is deferred to subclasses.
*/
public abstract class ResponseHandler {
/**
* Returns the text string of the server response handled by this object.
* @return the id
*/
public abstract String getResponseID();
/**
* Handles a server response.
* <p>
* Suppose as a result of performing a command the CVS server responds
* as follows:<br>
* <pre>
* [...]
* Clear-sticky myDirectory \n
* /u/cvsroot/myDirectory \n
* [...]
* </pre>
* Then the <code>handle</code> method of the <code>ResponseHandler</code>
* for <em>Clear-sticky</em> will be invoked with <code>argument</code>
* set to <em>"myDirectory"</em>. It must then read the remaining
* response data from the connection (<em>"/u/cvsroot/myDirectory"</em>
* including the newline) and take any necessary action.
* </p><p>
* Note: The type and quantity of additional data that must be read
* from the connection varies on a per-response basis.
* </p>
* @param session the Session used for CVS communication
* @param argument the argument supplied with the response
* @param monitor the progress monitor for the current CVS command
*/
public abstract void handle(Session session, String argument,
IProgressMonitor monitor) throws CVSException;
/**
* Creates a new CVS folder.
* @param localDir the local path of the folder relative to root
* @param repositoryDir the remote path of the folder relative to the repository
* @return the new folder
*/
protected static ICVSFolder createFolder(
Session session,
String localDir,
String repositoryDir) throws CVSException {
ICVSFolder folder = session.getLocalRoot().getFolder(localDir);
if (!folder.exists()
&& (!CVSProviderPlugin.getPlugin().getPruneEmptyDirectories()
|| !folder.getParent().isCVSFolder())) {
// Only create the folder if pruning is disabled or the
// folder's parent is not a CVS folder (which occurs on checkout).
// When pruning is enabled, the folder will be lazily created
// when it contains a file (see getExistingFolder)
folder.mkdir();
}
if (! folder.isCVSFolder()) {
folder.setFolderSyncInfo(new FolderSyncInfo(
Util.getRelativePath(session.getRepositoryRoot(), repositoryDir),
session.getCVSRepositoryLocation().getLocation(),
null, false));
}
return folder;
}
protected ICVSFolder getExistingFolder(Session session, String localDir) throws CVSException {
ICVSFolder mParent = session.getLocalRoot().getFolder(localDir);
if (! mParent.exists()) {
// First, check if the parent is a phantom
IContainer container = (IContainer)mParent.getIResource();
if (container != null) {
// Create all the parents as need
recreatePhatomFolders(mParent);
}
}
return mParent;
}
/**
* Method recreatePhatomFolders.
* @param mParent
*/
private void recreatePhatomFolders(ICVSFolder folder) throws CVSException {
ICVSFolder parent = folder.getParent();
if (!parent.exists()) {
recreatePhatomFolders(parent);
}
folder.mkdir();
}
/**
* Return as instance that can be used by an open session. Subclasses that contain
* session related state must override this message to return a copy of themselves.
*/
/* package */ ResponseHandler getInstance() {
return this;
}
}
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