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/* |
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* Copyright (C) 2011, Chris Aniszczyk <caniszczyk@gmail.com> |
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* and other copyright owners as documented in the project's IP log. |
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* |
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* This program and the accompanying materials are made available |
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* under the terms of the Eclipse Distribution License v1.0 which |
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* accompanies this distribution, is reproduced below, and is |
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* available at http://www.eclipse.org/org/documents/edl-v10.php |
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* |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or |
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* without modification, are permitted provided that the following |
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* conditions are met: |
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* |
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* - Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* - Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer in the documentation and/or other materials provided |
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* with the distribution. |
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* |
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* - Neither the name of the Eclipse Foundation, Inc. nor the |
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* names of its contributors may be used to endorse or promote |
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* products derived from this software without specific prior |
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* written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND |
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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package org.eclipse.jgit.api; |
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import java.io.File; |
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import java.io.IOException; |
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import java.net.URISyntaxException; |
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import java.util.concurrent.Callable; |
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import org.eclipse.jgit.api.errors.InvalidRemoteException; |
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import org.eclipse.jgit.api.errors.JGitInternalException; |
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import org.eclipse.jgit.dircache.DirCache; |
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import org.eclipse.jgit.dircache.DirCacheCheckout; |
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import org.eclipse.jgit.errors.IncorrectObjectTypeException; |
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import org.eclipse.jgit.errors.MissingObjectException; |
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import org.eclipse.jgit.lib.Constants; |
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import org.eclipse.jgit.lib.NullProgressMonitor; |
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import org.eclipse.jgit.lib.ProgressMonitor; |
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import org.eclipse.jgit.lib.Ref; |
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import org.eclipse.jgit.lib.RefUpdate; |
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import org.eclipse.jgit.lib.Repository; |
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import org.eclipse.jgit.revwalk.RevCommit; |
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import org.eclipse.jgit.revwalk.RevWalk; |
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import org.eclipse.jgit.transport.CredentialsProvider; |
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import org.eclipse.jgit.transport.FetchResult; |
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import org.eclipse.jgit.transport.RefSpec; |
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import org.eclipse.jgit.transport.RemoteConfig; |
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import org.eclipse.jgit.transport.URIish; |
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/** |
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* Clone a repository into a new working directory |
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* |
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* @see <a href="http://www.kernel.org/pub/software/scm/git/docs/git-clone.html" |
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* >Git documentation about Clone</a> |
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*/ |
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public class CloneCommand implements Callable<Git> { |
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private String uri; |
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private File directory; |
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private boolean bare; |
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private String remote = Constants.DEFAULT_REMOTE_NAME; |
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private String branch = Constants.HEAD; |
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private ProgressMonitor monitor = NullProgressMonitor.INSTANCE; |
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private CredentialsProvider credentialsProvider; |
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/** |
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* Executes the {@code Clone} command. |
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* |
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* @throws JGitInternalException |
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* if the repository can't be created |
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* @return the newly created {@code Git} object with associated repository |
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*/ |
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public Git call() throws JGitInternalException { |
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try { |
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URIish u = new URIish(uri); |
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Repository repository = init(u); |
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FetchResult result = fetch(repository, u); |
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checkout(repository, result); |
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return new Git(repository); |
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} catch (IOException ioe) { |
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throw new JGitInternalException(ioe.getMessage(), ioe); |
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} catch (InvalidRemoteException e) { |
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throw new JGitInternalException(e.getMessage(), e); |
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} catch (URISyntaxException e) { |
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throw new JGitInternalException(e.getMessage(), e); |
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} |
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} |
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private Repository init(URIish u) { |
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InitCommand command = Git.init(); |
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command.setBare(bare); |
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if (directory == null) |
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directory = new File(u.getHumanishName(), Constants.DOT_GIT); |
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command.setDirectory(directory); |
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return command.call().getRepository(); |
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} |
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private FetchResult fetch(Repository repo, URIish u) |
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throws URISyntaxException, |
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JGitInternalException, |
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InvalidRemoteException, IOException { |
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// create the remote config and save it |
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RemoteConfig config = new RemoteConfig(repo.getConfig(), remote); |
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config.addURI(u); |
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final String dst = Constants.R_REMOTES + config.getName(); |
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RefSpec refSpec = new RefSpec(); |
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refSpec = refSpec.setForceUpdate(true); |
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refSpec = refSpec.setSourceDestination(Constants.R_HEADS + "*", dst + "/*"); //$NON-NLS-1$ //$NON-NLS-2$ |
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config.addFetchRefSpec(refSpec); |
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config.update(repo.getConfig()); |
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repo.getConfig().save(); |
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// run the fetch command |
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FetchCommand command = new FetchCommand(repo); |
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command.setRemote(remote); |
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command.setProgressMonitor(monitor); |
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if (credentialsProvider != null) |
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command.setCredentialsProvider(credentialsProvider); |
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return command.call(); |
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} |
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private void checkout(Repository repo, FetchResult result) |
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throws JGitInternalException, |
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MissingObjectException, IncorrectObjectTypeException, IOException { |
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if (branch.startsWith(Constants.R_HEADS)) { |
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final RefUpdate head = repo.updateRef(Constants.HEAD); |
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head.disableRefLog(); |
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head.link(branch); |
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} |
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final Ref head = result.getAdvertisedRef(branch); |
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if (head == null || head.getObjectId() == null) |
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return; // throw exception? |
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final RevCommit commit = parseCommit(repo, head); |
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boolean detached = !head.getName().startsWith(Constants.R_HEADS); |
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RefUpdate u = repo.updateRef(Constants.HEAD, detached); |
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u.setNewObjectId(commit.getId()); |
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u.forceUpdate(); |
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DirCache dc = repo.lockDirCache(); |
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DirCacheCheckout co = new DirCacheCheckout(repo, dc, commit.getTree()); |
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co.checkout(); |
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} |
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private RevCommit parseCommit(final Repository repo, final Ref ref) |
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throws MissingObjectException, IncorrectObjectTypeException, |
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IOException { |
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final RevWalk rw = new RevWalk(repo); |
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final RevCommit commit; |
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try { |
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commit = rw.parseCommit(ref.getObjectId()); |
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} finally { |
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rw.release(); |
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} |
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return commit; |
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} |
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/** |
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* @param uri |
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* the uri to clone from |
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* @return this instance |
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*/ |
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public CloneCommand setURI(String uri) { |
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this.uri = uri; |
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return this; |
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} |
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/** |
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* The optional directory associated with the clone operation. If the |
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* directory isn't set, a name associated with the source uri will be used. |
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* |
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* @see URIish#getHumanishName() |
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* |
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* @param directory |
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* the directory to clone to |
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* @return this instance |
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*/ |
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public CloneCommand setDirectory(File directory) { |
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this.directory = directory; |
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return this; |
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} |
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/** |
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* @param bare |
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* whether the cloned repository is bare or not |
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* @return this instance |
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*/ |
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public CloneCommand setBare(boolean bare) { |
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this.bare = bare; |
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return this; |
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} |
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/** |
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* @param remote |
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* the branch to keep track of in the origin repository |
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* @return this instance |
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*/ |
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public CloneCommand setRemote(String remote) { |
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this.remote = remote; |
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return this; |
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} |
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/** |
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* @param branch |
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* the initial branch to check out when cloning the repository |
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* @return this instance |
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*/ |
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public CloneCommand setBranch(String branch) { |
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this.branch = branch; |
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return this; |
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} |
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/** |
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* The progress monitor associated with the clone operation. By default, |
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* this is set to <code>NullProgressMonitor</code> |
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* |
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* @see NullProgressMonitor |
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* |
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* @param monitor |
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* @return {@code this} |
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*/ |
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public CloneCommand setProgressMonitor(ProgressMonitor monitor) { |
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this.monitor = monitor; |
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return this; |
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} |
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/** |
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* @param credentialsProvider |
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* the {@link CredentialsProvider} to use |
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* @return {@code this} |
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*/ |
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public CloneCommand setCredentialsProvider( |
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CredentialsProvider credentialsProvider) { |
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this.credentialsProvider = credentialsProvider; |
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return this; |
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} |
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} |
Chris Aniszczyk
13 years ago