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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.ui.operations;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.team.core.TeamException;
import org.eclipse.team.internal.ccvs.core.CVSException;
import org.eclipse.team.internal.ccvs.core.ICVSRemoteFolder;
import org.eclipse.team.internal.ccvs.ui.Policy;
/**
* Operation which checks for the existance of the .project file (or .vcm_meta file)
* in a remote folder. The operation can be run using the <code>hasMetaFile</code>
* static method of by executing the operation and then checking <code>metaFileExists</code>
*/
public class HasProjectMetaFileOperation extends CVSOperation {
private ICVSRemoteFolder remoteFolder;
private boolean metaFileExists;
public static boolean hasMetaFile(Shell shell, ICVSRemoteFolder remoteFolder) throws CVSException, InterruptedException {
HasProjectMetaFileOperation op = new HasProjectMetaFileOperation(shell, remoteFolder);
op.run();
return op.metaFileExists();
}
public HasProjectMetaFileOperation(Shell shell, ICVSRemoteFolder remoteFolder) {
super(shell);
this.remoteFolder = remoteFolder;
}
/*
* Return true if the provided remote folder contains a valid meta-file
* (i.e. .project or the older .vcm_meta file).
*/
private boolean hasMetaFile(ICVSRemoteFolder folder, IProgressMonitor monitor) throws CVSException {
// make a copy of the folder so that we will not effect the original folder when we refetch the members
// TODO: this is a strange thing to need to do. We shold fix this.
folder = (ICVSRemoteFolder)folder.forTag(remoteFolder.getTag());
try {
folder.members(monitor);
} catch (TeamException e) {
throw CVSException.wrapException(e);
}
// Check for the existance of the .project file
try {
folder.getFile(".project"); //$NON-NLS-1$
return true;
} catch (TeamException e) {
// We couldn't retrieve the meta file so assume it doesn't exist
}
// If the above failed, look for the old .vcm_meta file
try {
folder.getFile(".vcm_meta"); //$NON-NLS-1$
return true;
} catch (TeamException e) {
// We couldn't retrieve the meta file so assume it doesn't exist
}
return false;
}
/* (non-Javadoc)
* @see org.eclipse.team.internal.ccvs.ui.operations.CVSOperation#execute(org.eclipse.core.runtime.IProgressMonitor)
*/
public void execute(IProgressMonitor monitor) throws CVSException, InterruptedException {
metaFileExists = hasMetaFile(remoteFolder, monitor);
}
/**
* Return true if the meta file exists remotely. This method should only be invoked
* after the operation has been executed;
* @return
*/
public boolean metaFileExists() {
return metaFileExists;
}
protected String getTaskName() {
return Policy.bind("HasProjectMetaFile.taskName"); //$NON-NLS-1$
}
/* (non-Javadoc)
* @see org.eclipse.team.internal.ccvs.ui.operations.CVSOperation#canRunAsJob()
*/
public boolean canRunAsJob() {
// This operation should never be run in the background.
return false;
}
}
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