/*******************************************************************************
* Copyright (C) 2007, Robin Rosenberg <robin.rosenberg@dewire.com>
* Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org>
* Copyright (C) 2008, Google Inc.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*******************************************************************************/
package org.eclipse.egit.core.op;
import java.io.IOException;
import java.util.Collection;
import java.util.IdentityHashMap;
import java.util.Map;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.runtime.jobs.ISchedulingRule;
import org.eclipse.egit.core.Activator;
import org.eclipse.egit.core.internal.CoreText;
import org.eclipse.egit.core.internal.job.RuleUtil;
import org.eclipse.egit.core.project.GitProjectData;
import org.eclipse.egit.core.project.RepositoryMapping;
import org.eclipse.jgit.dircache.DirCacheEditor;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.osgi.util.NLS;
/**
* Remove one or more existing files/folders from the Git repository.
* <p>
* Accepts a collection of resources (files and/or directories) which should be
* removed from the their corresponding Git repositories. Resources in the
* collection can be associated with multiple repositories. The operation will
* automatically remove each resource from the correct Git repository.
* </p>
* <p>
* Resources are only scheduled for removal in the index-
* </p>
*/
public class UntrackOperation implements IEGitOperation {
private final Collection<? extends IResource> rsrcList;
private final IdentityHashMap<Repository, DirCacheEditor> edits;
private final IdentityHashMap<RepositoryMapping, Object> mappings;
/**
* Create a new operation to stop tracking existing files/folders.
*
* @param rsrcs
* collection of {@link IResource}s which should be removed from
* the relevant Git repositories.
*/
public UntrackOperation(final Collection<? extends IResource> rsrcs) {
rsrcList = rsrcs;
edits = new IdentityHashMap<Repository, DirCacheEditor>();
mappings = new IdentityHashMap<RepositoryMapping, Object>();
}
/* (non-Javadoc)
* @see org.eclipse.egit.core.op.IEGitOperation#execute(org.eclipse.core.runtime.IProgressMonitor)
*/
public void execute(IProgressMonitor m) throws CoreException {
IProgressMonitor monitor;
if (m == null)
monitor = new NullProgressMonitor();
else
monitor = m;
edits.clear();
mappings.clear();
monitor.beginTask(CoreText.UntrackOperation_adding, rsrcList.size() * 200);
try {
for (IResource obj : rsrcList) {
remove(obj);
monitor.worked(200);
}
for (Map.Entry<Repository, DirCacheEditor> e : edits.entrySet()) {
final Repository db = e.getKey();
final DirCacheEditor editor = e.getValue();
monitor.setTaskName(NLS.bind(CoreText.UntrackOperation_writingIndex, db.getDirectory()));
editor.commit();
}
} catch (RuntimeException e) {
throw new CoreException(Activator.error(CoreText.UntrackOperation_failed, e));
} catch (IOException e) {
throw new CoreException(Activator.error(CoreText.UntrackOperation_failed, e));
} finally {
for (final RepositoryMapping rm : mappings.keySet())
rm.fireRepositoryChanged();
for (DirCacheEditor editor:edits.values())
if (editor.getDirCache() != null)
editor.getDirCache().unlock();
edits.clear();
mappings.clear();
monitor.done();
}
}
/* (non-Javadoc)
* @see org.eclipse.egit.core.op.IEGitOperation#getSchedulingRule()
*/
public ISchedulingRule getSchedulingRule() {
return RuleUtil.getRuleForRepositories(rsrcList.toArray(new IResource[rsrcList.size()]));
}
private void remove(final IResource path) throws CoreException {
final IProject proj = path.getProject();
final GitProjectData pd = GitProjectData.get(proj);
if (pd == null)
return;
final RepositoryMapping rm = pd.getRepositoryMapping(path);
if (rm == null)
return;
final Repository db = rm.getRepository();
DirCacheEditor e = edits.get(db);
if (e == null) {
try {
e = db.lockDirCache().editor();
} catch (IOException err) {
throw new CoreException(Activator.error(CoreText.UntrackOperation_failed, err));
}
edits.put(db, e);
mappings.put(rm, rm);
}
if (path instanceof IContainer)
e.add(new DirCacheEditor.DeleteTree(rm.getRepoRelativePath(path)));
else
e.add(new DirCacheEditor.DeletePath(rm.getRepoRelativePath(path)));
}
}