| /* |
| * Copyright (C) 2008-2009, Robin Rosenberg <robin.rosenberg@dewire.com> |
| * Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org> |
| * 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.revplot; |
| |
| import java.io.IOException; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.Comparator; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.eclipse.jgit.lib.AnyObjectId; |
| import org.eclipse.jgit.lib.Commit; |
| import org.eclipse.jgit.lib.Ref; |
| import org.eclipse.jgit.lib.Repository; |
| import org.eclipse.jgit.lib.Tag; |
| import org.eclipse.jgit.revwalk.RevCommit; |
| import org.eclipse.jgit.revwalk.RevSort; |
| import org.eclipse.jgit.revwalk.RevWalk; |
| |
| /** Specialized RevWalk for visualization of a commit graph. */ |
| public class PlotWalk extends RevWalk { |
| |
| private Map<AnyObjectId, Set<Ref>> reverseRefMap; |
| |
| @Override |
| public void dispose() { |
| super.dispose(); |
| reverseRefMap.clear(); |
| } |
| |
| /** |
| * Create a new revision walker for a given repository. |
| * |
| * @param repo |
| * the repository the walker will obtain data from. |
| */ |
| public PlotWalk(final Repository repo) { |
| super(repo); |
| super.sort(RevSort.TOPO, true); |
| reverseRefMap = repo.getAllRefsByPeeledObjectId(); |
| } |
| |
| @Override |
| public void sort(final RevSort s, final boolean use) { |
| if (s == RevSort.TOPO && !use) |
| throw new IllegalArgumentException("Topological sort required."); |
| super.sort(s, use); |
| } |
| |
| @Override |
| protected RevCommit createCommit(final AnyObjectId id) { |
| return new PlotCommit(id, getTags(id)); |
| } |
| |
| /** |
| * @param commitId |
| * @return return the list of knows tags referring to this commit |
| */ |
| protected Ref[] getTags(final AnyObjectId commitId) { |
| Collection<Ref> list = reverseRefMap.get(commitId); |
| Ref[] tags; |
| if (list == null) |
| tags = null; |
| else { |
| tags = list.toArray(new Ref[list.size()]); |
| Arrays.sort(tags, new PlotRefComparator()); |
| } |
| return tags; |
| } |
| |
| class PlotRefComparator implements Comparator<Ref> { |
| public int compare(Ref o1, Ref o2) { |
| try { |
| Object obj1 = getRepository().mapObject(o1.getObjectId(), o1.getName()); |
| Object obj2 = getRepository().mapObject(o2.getObjectId(), o2.getName()); |
| long t1 = timeof(obj1); |
| long t2 = timeof(obj2); |
| if (t1 > t2) |
| return -1; |
| if (t1 < t2) |
| return 1; |
| return 0; |
| } catch (IOException e) { |
| // ignore |
| return 0; |
| } |
| } |
| long timeof(Object o) { |
| if (o instanceof Commit) |
| return ((Commit)o).getCommitter().getWhen().getTime(); |
| if (o instanceof Tag) |
| return ((Tag)o).getTagger().getWhen().getTime(); |
| return 0; |
| } |
| } |
| } |