/*
* Copyright (C) 2008-2010, Google Inc.
* and other copyright owners as documented in the project's IP log.
*
* This program and the accompanying materials are made available
* under the terms of the Eclipse Distribution License v1.0 which
* accompanies this distribution, is reproduced below, and is
* available at http://www.eclipse.org/org/documents/edl-v10.php
*
* All rights reserved.
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* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
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* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
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package org.eclipse.jgit.pgm;
import java.io.File;
import java.io.IOException;
import java.net.URISyntaxException;
import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.kohsuke.args4j.Argument;
import org.kohsuke.args4j.Option;
import org.eclipse.jgit.errors.NotSupportedException;
import org.eclipse.jgit.errors.TransportException;
import org.eclipse.jgit.lib.Commit;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.GitIndex;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.RefComparator;
import org.eclipse.jgit.lib.RefUpdate;
import org.eclipse.jgit.lib.TextProgressMonitor;
import org.eclipse.jgit.lib.Tree;
import org.eclipse.jgit.lib.WorkDirCheckout;
import org.eclipse.jgit.storage.file.FileRepository;
import org.eclipse.jgit.transport.FetchResult;
import org.eclipse.jgit.transport.RefSpec;
import org.eclipse.jgit.transport.RemoteConfig;
import org.eclipse.jgit.transport.Transport;
import org.eclipse.jgit.transport.URIish;
@Command(common = true, usage = "usage_cloneRepositoryIntoNewDir")
class Clone extends AbstractFetchCommand {
@Option(name = "--origin", aliases = { "-o" }, metaVar = "metaVar_remoteName", usage = "usage_useNameInsteadOfOriginToTrackUpstream")
private String remoteName = Constants.DEFAULT_REMOTE_NAME;
@Argument(index = 0, required = true, metaVar = "metaVar_uriish")
private String sourceUri;
@Argument(index = 1, metaVar = "metaVar_directory")
private String localName;
private FileRepository dst;
@Override
protected final boolean requiresRepository() {
return false;
}
@Override
protected void run() throws Exception {
if (localName != null && gitdir != null)
throw die(CLIText.get().conflictingUsageOf_git_dir_andArguments);
final URIish uri = new URIish(sourceUri);
if (localName == null) {
try {
localName = uri.getHumanishName();
} catch (IllegalArgumentException e) {
throw die(MessageFormat.format(CLIText.get().cannotGuessLocalNameFrom, sourceUri));
}
}
if (gitdir == null)
gitdir = new File(localName, Constants.DOT_GIT);
dst = new FileRepository(gitdir);
dst.create();
dst.getConfig().setBoolean("core", null, "bare", false);
dst.getConfig().save();
db = dst;
out.format(CLIText.get().initializedEmptyGitRepositoryIn, gitdir.getAbsolutePath());
out.println();
out.flush();
saveRemote(uri);
final FetchResult r = runFetch();
final Ref branch = guessHEAD(r);
doCheckout(branch);
}
private void saveRemote(final URIish uri) throws URISyntaxException,
IOException {
final RemoteConfig rc = new RemoteConfig(dst.getConfig(), remoteName);
rc.addURI(uri);
rc.addFetchRefSpec(new RefSpec().setForceUpdate(true)
.setSourceDestination(Constants.R_HEADS + "*",
Constants.R_REMOTES + remoteName + "/*"));
rc.update(dst.getConfig());
dst.getConfig().save();
}
private FetchResult runFetch() throws NotSupportedException,
URISyntaxException, TransportException {
final Transport tn = Transport.open(db, remoteName);
final FetchResult r;
try {
r = tn.fetch(new TextProgressMonitor(), null);
} finally {
tn.close();
}
showFetchResult(tn, r);
return r;
}
private Ref guessHEAD(final FetchResult result) {
final Ref idHEAD = result.getAdvertisedRef(Constants.HEAD);
final List<Ref> availableRefs = new ArrayList<Ref>();
Ref head = null;
for (final Ref r : result.getAdvertisedRefs()) {
final String n = r.getName();
if (!n.startsWith(Constants.R_HEADS))
continue;
availableRefs.add(r);
if (idHEAD == null || head != null)
continue;
if (r.getObjectId().equals(idHEAD.getObjectId()))
head = r;
}
Collections.sort(availableRefs, RefComparator.INSTANCE);
if (idHEAD != null && head == null)
head = idHEAD;
return head;
}
private void doCheckout(final Ref branch) throws IOException {
if (branch == null)
throw die(CLIText.get().cannotChekoutNoHeadsAdvertisedByRemote);
if (!Constants.HEAD.equals(branch.getName())) {
RefUpdate u = db.updateRef(Constants.HEAD);
u.disableRefLog();
u.link(branch.getName());
}
final Commit commit = db.mapCommit(branch.getObjectId());
final RefUpdate u = db.updateRef(Constants.HEAD);
u.setNewObjectId(commit.getCommitId());
u.forceUpdate();
final GitIndex index = new GitIndex(db);
final Tree tree = commit.getTree();
final WorkDirCheckout co;
co = new WorkDirCheckout(db, db.getWorkTree(), index, tree);
co.checkout();
index.write();
}
}