|
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187 |
- /*
- * Copyright (C) 2008-2009, 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.
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * - 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.
- *
- * - Neither the name of the Eclipse Foundation, Inc. nor the
- * names of its contributors may be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
- package org.eclipse.jgit.pgm;
-
- import java.io.File;
- import java.io.IOException;
- import java.net.URISyntaxException;
- 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.Repository;
- import org.eclipse.jgit.lib.TextProgressMonitor;
- import org.eclipse.jgit.lib.Tree;
- import org.eclipse.jgit.lib.WorkDirCheckout;
- 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 = "Clone a repository into a new directory")
- class Clone extends AbstractFetchCommand {
- @Option(name = "--origin", aliases = { "-o" }, metaVar = "name", usage = "use <name> instead of 'origin' to track upstream")
- private String remoteName = "origin";
-
- @Argument(index = 0, required = true, metaVar = "uri-ish")
- private String sourceUri;
-
- @Argument(index = 1, metaVar = "directory")
- private String localName;
-
- @Override
- protected final boolean requiresRepository() {
- return false;
- }
-
- @Override
- protected void run() throws Exception {
- if (localName != null && gitdir != null)
- throw die("conflicting usage of --git-dir and arguments");
-
- final URIish uri = new URIish(sourceUri);
- if (localName == null) {
- String p = uri.getPath();
- while (p.endsWith("/"))
- p = p.substring(0, p.length() - 1);
- final int s = p.lastIndexOf('/');
- if (s < 0)
- throw die("cannot guess local name from " + sourceUri);
- localName = p.substring(s + 1);
- if (localName.endsWith(".git"))
- localName = localName.substring(0, localName.length() - 4);
- }
- if (gitdir == null)
- gitdir = new File(localName, ".git");
-
- db = new Repository(gitdir);
- db.create();
- db.getConfig().setBoolean("core", null, "bare", false);
- db.getConfig().save();
-
- out.println("Initialized empty Git repository in "
- + gitdir.getAbsolutePath());
- 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(db.getConfig(), remoteName);
- rc.addURI(uri);
- rc.addFetchRefSpec(new RefSpec().setForceUpdate(true)
- .setSourceDestination(Constants.R_HEADS + "*",
- Constants.R_REMOTES + remoteName + "/*"));
- rc.update(db.getConfig());
- db.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("cannot checkout; no HEAD advertised by remote");
- if (!Constants.HEAD.equals(branch.getName()))
- db.writeSymref(Constants.HEAD, 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.getWorkDir(), index, tree);
- co.checkout();
- index.write();
- }
- }
|