/*
* 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
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* without modification, are permitted provided that the following
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* - Redistributions in binary form must reproduce the above
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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 org.eclipse.jgit.dircache.DirCache;
import org.eclipse.jgit.dircache.DirCacheCheckout;
import org.eclipse.jgit.errors.IncorrectObjectTypeException;
import org.eclipse.jgit.errors.MissingObjectException;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.RefUpdate;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.lib.StoredConfig;
import org.eclipse.jgit.lib.TextProgressMonitor;
import org.eclipse.jgit.pgm.internal.CLIText;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;
import org.eclipse.jgit.storage.file.FileRepositoryBuilder;
import org.eclipse.jgit.transport.FetchResult;
import org.eclipse.jgit.transport.RefSpec;
import org.eclipse.jgit.transport.RemoteConfig;
import org.eclipse.jgit.transport.TagOpt;
import org.eclipse.jgit.transport.Transport;
import org.eclipse.jgit.transport.URIish;
import org.kohsuke.args4j.Argument;
import org.kohsuke.args4j.Option;
@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;
@Option(name = "--branch", aliases = { "-b" }, metaVar = "metaVar_branchName", usage = "usage_checkoutBranchAfterClone")
private String branch;
@Argument(index = 0, required = true, metaVar = "metaVar_uriish")
private String sourceUri;
@Argument(index = 1, metaVar = "metaVar_directory")
private String localName;
private Repository 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).getAbsolutePath();
dst = new FileRepositoryBuilder().setGitDir(new File(gitdir)).build();
dst.create();
final StoredConfig dstcfg = dst.getConfig();
dstcfg.setBoolean("core", null, "bare", false); //$NON-NLS-1$ //$NON-NLS-2$
dstcfg.save();
db = dst;
outw.print(MessageFormat.format(
CLIText.get().initializedEmptyGitRepositoryIn, gitdir));
outw.println();
outw.flush();
saveRemote(uri);
final FetchResult r = runFetch();
final Ref checkoutRef;
if (branch == null)
checkoutRef = guessHEAD(r);
else {
checkoutRef = r.getAdvertisedRef(Constants.R_HEADS + branch);
if (checkoutRef == null)
throw die(MessageFormat.format(CLIText.get().noSuchRemoteRef,
branch));
}
doCheckout(checkoutRef);
}
private void saveRemote(final URIish uri) throws URISyntaxException,
IOException {
final StoredConfig dstcfg = dst.getConfig();
final RemoteConfig rc = new RemoteConfig(dstcfg, remoteName);
rc.addURI(uri);
rc.addFetchRefSpec(new RefSpec().setForceUpdate(true)
.setSourceDestination(Constants.R_HEADS + "*", //$NON-NLS-1$
Constants.R_REMOTES + remoteName + "/*")); //$NON-NLS-1$
rc.update(dstcfg);
dstcfg.save();
}
private FetchResult runFetch() throws URISyntaxException, IOException {
final Transport tn = Transport.open(db, remoteName);
final FetchResult r;
try {
tn.setTagOpt(TagOpt.FETCH_TAGS);
r = tn.fetch(new TextProgressMonitor(), null);
} finally {
tn.close();
}
showFetchResult(r);
return r;
}
private static Ref guessHEAD(final FetchResult result) {
final Ref idHEAD = result.getAdvertisedRef(Constants.HEAD);
Ref head = null;
for (final Ref r : result.getAdvertisedRefs()) {
final String n = r.getName();
if (!n.startsWith(Constants.R_HEADS))
continue;
if (idHEAD == null || head != null)
continue;
if (r.getObjectId().equals(idHEAD.getObjectId()))
head = r;
}
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 RevCommit commit = parseCommit(branch);
final RefUpdate u = db.updateRef(Constants.HEAD);
u.setNewObjectId(commit);
u.forceUpdate();
DirCache dc = db.lockDirCache();
DirCacheCheckout co = new DirCacheCheckout(db, dc, commit.getTree());
co.checkout();
}
private RevCommit parseCommit(final Ref branch)
throws MissingObjectException, IncorrectObjectTypeException,
IOException {
final RevWalk rw = new RevWalk(db);
final RevCommit commit;
try {
commit = rw.parseCommit(branch.getObjectId());
} finally {
rw.release();
}
return commit;
}
}