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/*******************************************************************************
* 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 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*******************************************************************************/
package org.eclipse.egit.core.op;
import java.io.IOException;
import java.util.Collection;
import java.util.Collections;
import java.util.IdentityHashMap;
import java.util.Map;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.Path;
import org.eclipse.core.runtime.SubMonitor;
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 Collection<IPath> locations;
private Repository db;
private final IdentityHashMap<Repository, DirCacheEditor> edits;
/**
* 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;
locations = Collections.emptyList();
edits = new IdentityHashMap<Repository, DirCacheEditor>();
}
/**
* Create a new operation to stop tracking existing files/folders.
*
* @param repository
* a Git repository
* @param locations
* collection of {@link IPath}s which should be removed from the
* relevant Git repositories.
*/
public UntrackOperation(final Repository repository,
final Collection<IPath> locations) {
rsrcList = Collections.emptyList();
this.locations = locations;
this.db = repository;
edits = new IdentityHashMap<Repository, DirCacheEditor>();
}
@Override
public void execute(IProgressMonitor monitor) throws CoreException {
SubMonitor progress = SubMonitor.convert(monitor, (rsrcList.size() + locations.size()) * 2);
progress.setTaskName(CoreText.UntrackOperation_adding);
edits.clear();
try {
for (IResource obj : rsrcList) {
remove(obj);
progress.worked(1);
}
for (IPath location : locations) {
remove(location);
progress.worked(1);
}
progress.setWorkRemaining(edits.size());
for (Map.Entry<Repository, DirCacheEditor> e : edits.entrySet()) {
final DirCacheEditor editor = e.getValue();
progress.setTaskName(
NLS.bind(CoreText.UntrackOperation_writingIndex,
db.getDirectory()));
editor.commit();
progress.worked(1);
}
} 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 (DirCacheEditor editor : edits.values()) {
if (editor.getDirCache() != null) {
editor.getDirCache().unlock();
}
}
edits.clear();
}
}
@Override
public ISchedulingRule getSchedulingRule() {
return RuleUtil.getRuleForRepositories(rsrcList.toArray(new IResource[0]));
}
private void remove(final IResource resource) throws CoreException {
final IProject proj = resource.getProject();
if (proj == null) {
return;
}
final GitProjectData pd = GitProjectData.get(proj);
if (pd == null) {
return;
}
final RepositoryMapping rm = pd.getRepositoryMapping(resource);
if (rm == null) {
return;
}
db = rm.getRepository();
remove(resource.getLocation());
}
private void remove(final IPath location) throws CoreException {
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);
}
IPath dbDir = new Path(db.getWorkTree().getAbsolutePath());
String path = location.makeRelativeTo(dbDir).toString();
if (location.toFile().isDirectory()) {
e.add(new DirCacheEditor.DeleteTree(path));
} else {
e.add(new DirCacheEditor.DeletePath(path));
}
}
}
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