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/*******************************************************************************
* Copyright (C) 2010, Mathias Kinzler <mathias.kinzler@sap.com>
*
* 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 static java.util.Arrays.asList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import org.eclipse.core.resources.IWorkspace;
import org.eclipse.core.resources.IWorkspaceRunnable;
import org.eclipse.core.resources.ResourcesPlugin;
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.jgit.api.Git;
import org.eclipse.jgit.api.errors.CannotDeleteCurrentBranchException;
import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.api.errors.JGitInternalException;
import org.eclipse.jgit.api.errors.NotMergedException;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.osgi.util.NLS;
/**
* This class implements deletion of a branch
*/
public class DeleteBranchOperation implements IEGitOperation {
/** Operation was performed */
public final static int OK = 0;
/** Current branch cannot be deleted */
public final static int REJECTED_CURRENT = 1;
/**
* Branch to be deleted has not been fully merged; use force to delete
* anyway
*/
public final static int REJECTED_UNMERGED = 2;
/** This operation was not executed yet */
public final static int NOT_TRIED = -1;
private int status = NOT_TRIED;
private final Repository repository;
private final Set<Ref> branches;
private final boolean force;
/**
* @param repository
* @param branch
* the branch to delete
* @param force
*/
public DeleteBranchOperation(Repository repository, Ref branch,
boolean force) {
this(repository, new HashSet<Ref>(asList(branch)), force);
}
/**
* @param repository
* @param branches
* the list of branches to deleted
* @param force
*/
public DeleteBranchOperation(Repository repository, Set<Ref> branches,
boolean force) {
this.repository = repository;
this.branches = branches;
this.force = force;
}
/**
* @return one of {@link #OK}, {@link #REJECTED_CURRENT},
* {@link #REJECTED_UNMERGED}, {@link #NOT_TRIED}
*/
public int getStatus() {
return status;
}
@Override
public void execute(IProgressMonitor m) throws CoreException {
IProgressMonitor monitor;
if (m == null)
monitor = new NullProgressMonitor();
else
monitor = m;
IWorkspaceRunnable action = new IWorkspaceRunnable() {
@Override
public void run(IProgressMonitor actMonitor) throws CoreException {
String taskName;
if (branches.size() == 1)
taskName = NLS.bind(
CoreText.DeleteBranchOperation_TaskName, branches
.iterator().next().getName());
else {
StringBuilder names = new StringBuilder();
for (Iterator<Ref> it = branches.iterator(); it.hasNext(); ) {
Ref ref = it.next();
names.append(ref.getName());
if (it.hasNext())
names.append(", "); //$NON-NLS-1$
}
taskName = NLS.bind(
CoreText.DeleteBranchOperation_TaskName, names);
}
actMonitor.beginTask(taskName, branches.size());
for (Ref branch : branches) {
try (Git git = new Git(repository)) {
git.branchDelete().setBranchNames(
branch.getName()).setForce(force).call();
status = OK;
} catch (NotMergedException e) {
status = REJECTED_UNMERGED;
break;
} catch (CannotDeleteCurrentBranchException e) {
status = REJECTED_CURRENT;
break;
} catch (JGitInternalException e) {
throw new CoreException(Activator.error(e.getMessage(), e));
} catch (GitAPIException e) {
throw new CoreException(Activator.error(e.getMessage(), e));
}
actMonitor.worked(1);
}
actMonitor.done();
}
};
// lock workspace to protect working tree changes
ResourcesPlugin.getWorkspace().run(action, getSchedulingRule(),
IWorkspace.AVOID_UPDATE, monitor);
}
@Override
public ISchedulingRule getSchedulingRule() {
return RuleUtil.getRule(repository);
}
}
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