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package org.eclipse.team.internal.ccvs.core.client;
/*
* (c) Copyright IBM Corp. 2000, 2002.
* All Rights Reserved.
*/
import org.eclipse.team.internal.ccvs.core.CVSException;
import org.eclipse.team.internal.ccvs.core.CVSProviderPlugin;
import org.eclipse.team.internal.ccvs.core.ICVSFile;
import org.eclipse.team.internal.ccvs.core.ICVSFolder;
import org.eclipse.team.internal.ccvs.core.ICVSResource;
import org.eclipse.team.internal.ccvs.core.ICVSResourceVisitor;
/**
* Goes recursivly through the folders checks if they are empyty
* and deletes them. Of course it is starting at the leaves of the
* recusion (the folders that do not have subfolders).
*/
class PruneFolderVisitor implements ICVSResourceVisitor {
private Session session;
private ICVSResource currentVisitRoot;
public PruneFolderVisitor() {
}
/**
* This method is used to visit a set of ICVSResources.
*/
public void visit(Session s, ICVSResource[] resources) throws CVSException {
session = s;
// Visit the resources
for (int i = 0; i < resources.length; i++) {
currentVisitRoot = resources[i];
resources[i].accept(this);
}
}
/**
* @see ICVSResourceVisitor#visitFile(IManagedFile)
*/
public void visitFile(ICVSFile file) throws CVSException {
pruneParentIfAppropriate(file);
}
/**
* @see ICVSResourceVisitor#visitFolder(ICVSFolder)
*/
public void visitFolder(ICVSFolder folder) throws CVSException {
// First prune any empty children
folder.acceptChildren(this);
pruneFolderIfAppropriate(folder);
}
private void pruneFolderIfAppropriate(ICVSFolder folder) throws CVSException {
if (folder.isManaged() &&
! folder.equals(session.getLocalRoot()) &&
folder.members(ICVSFolder.ALL_MEMBERS).length == 0) {
folder.delete();
folder.unmanage(null);
pruneParentIfAppropriate(folder);
}
}
private void pruneParentIfAppropriate(ICVSResource resource) throws CVSException {
// If we are visiting the current visit root, prune the parent if appropriate
if (CVSProviderPlugin.getPlugin().getPruneEmptyDirectories() && resource.equals(currentVisitRoot)) {
currentVisitRoot = resource.getParent();
pruneFolderIfAppropriate((ICVSFolder)currentVisitRoot);
}
}
}
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