| /* |
| * Copyright (C) 2010, Garmin International |
| * Copyright (C) 2010, Matt Fischer <matt.fischer@garmin.com> |
| * 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.revwalk; |
| |
| import java.io.IOException; |
| |
| import org.eclipse.jgit.errors.IncorrectObjectTypeException; |
| import org.eclipse.jgit.errors.MissingObjectException; |
| import org.eclipse.jgit.lib.AnyObjectId; |
| import org.eclipse.jgit.lib.ObjectReader; |
| import org.eclipse.jgit.lib.Repository; |
| |
| /** |
| * Interface for revision walkers that perform depth filtering. |
| */ |
| public interface DepthWalk { |
| /** |
| * Get depth to filter to. |
| * |
| * @return Depth to filter to. |
| */ |
| public int getDepth(); |
| |
| /** @return flag marking commits that should become unshallow. */ |
| /** |
| * Get flag marking commits that should become unshallow. |
| * |
| * @return flag marking commits that should become unshallow. |
| */ |
| public RevFlag getUnshallowFlag(); |
| |
| /** |
| * Get flag marking commits that are interesting again. |
| * |
| * @return flag marking commits that are interesting again. |
| */ |
| public RevFlag getReinterestingFlag(); |
| |
| /** RevCommit with a depth (in commits) from a root. */ |
| public static class Commit extends RevCommit { |
| /** Depth of this commit in the graph, via shortest path. */ |
| int depth; |
| |
| /** @return depth of this commit, as found by the shortest path. */ |
| public int getDepth() { |
| return depth; |
| } |
| |
| /** |
| * Initialize a new commit. |
| * |
| * @param id |
| * object name for the commit. |
| */ |
| protected Commit(AnyObjectId id) { |
| super(id); |
| depth = -1; |
| } |
| } |
| |
| /** Subclass of RevWalk that performs depth filtering. */ |
| public class RevWalk extends org.eclipse.jgit.revwalk.RevWalk implements DepthWalk { |
| private final int depth; |
| |
| private final RevFlag UNSHALLOW; |
| |
| private final RevFlag REINTERESTING; |
| |
| /** |
| * @param repo Repository to walk |
| * @param depth Maximum depth to return |
| */ |
| public RevWalk(Repository repo, int depth) { |
| super(repo); |
| |
| this.depth = depth; |
| this.UNSHALLOW = newFlag("UNSHALLOW"); //$NON-NLS-1$ |
| this.REINTERESTING = newFlag("REINTERESTING"); //$NON-NLS-1$ |
| } |
| |
| /** |
| * @param or ObjectReader to use |
| * @param depth Maximum depth to return |
| */ |
| public RevWalk(ObjectReader or, int depth) { |
| super(or); |
| |
| this.depth = depth; |
| this.UNSHALLOW = newFlag("UNSHALLOW"); //$NON-NLS-1$ |
| this.REINTERESTING = newFlag("REINTERESTING"); //$NON-NLS-1$ |
| } |
| |
| /** |
| * Mark a root commit (i.e., one whose depth should be considered 0.) |
| * |
| * @param c |
| * Commit to mark |
| * @throws IOException |
| * @throws IncorrectObjectTypeException |
| * @throws MissingObjectException |
| */ |
| public void markRoot(RevCommit c) throws MissingObjectException, |
| IncorrectObjectTypeException, IOException { |
| if (c instanceof Commit) |
| ((Commit) c).depth = 0; |
| super.markStart(c); |
| } |
| |
| @Override |
| protected RevCommit createCommit(AnyObjectId id) { |
| return new Commit(id); |
| } |
| |
| @Override |
| public int getDepth() { |
| return depth; |
| } |
| |
| @Override |
| public RevFlag getUnshallowFlag() { |
| return UNSHALLOW; |
| } |
| |
| @Override |
| public RevFlag getReinterestingFlag() { |
| return REINTERESTING; |
| } |
| |
| /** |
| * @since 4.5 |
| */ |
| @Override |
| public ObjectWalk toObjectWalkWithSameObjects() { |
| ObjectWalk ow = new ObjectWalk(reader, depth); |
| ow.objects = objects; |
| ow.freeFlags = freeFlags; |
| return ow; |
| } |
| } |
| |
| /** Subclass of ObjectWalk that performs depth filtering. */ |
| public class ObjectWalk extends org.eclipse.jgit.revwalk.ObjectWalk implements DepthWalk { |
| private final int depth; |
| |
| private final RevFlag UNSHALLOW; |
| |
| private final RevFlag REINTERESTING; |
| |
| /** |
| * @param repo Repository to walk |
| * @param depth Maximum depth to return |
| */ |
| public ObjectWalk(Repository repo, int depth) { |
| super(repo); |
| |
| this.depth = depth; |
| this.UNSHALLOW = newFlag("UNSHALLOW"); //$NON-NLS-1$ |
| this.REINTERESTING = newFlag("REINTERESTING"); //$NON-NLS-1$ |
| } |
| |
| /** |
| * @param or Object Reader |
| * @param depth Maximum depth to return |
| */ |
| public ObjectWalk(ObjectReader or, int depth) { |
| super(or); |
| |
| this.depth = depth; |
| this.UNSHALLOW = newFlag("UNSHALLOW"); //$NON-NLS-1$ |
| this.REINTERESTING = newFlag("REINTERESTING"); //$NON-NLS-1$ |
| } |
| |
| /** |
| * Mark a root commit (i.e., one whose depth should be considered 0.) |
| * |
| * @param o |
| * Commit to mark |
| * @throws IOException |
| * @throws IncorrectObjectTypeException |
| * @throws MissingObjectException |
| */ |
| public void markRoot(RevObject o) throws MissingObjectException, |
| IncorrectObjectTypeException, IOException { |
| RevObject c = o; |
| while (c instanceof RevTag) { |
| c = ((RevTag) c).getObject(); |
| parseHeaders(c); |
| } |
| if (c instanceof Commit) |
| ((Commit) c).depth = 0; |
| super.markStart(o); |
| } |
| |
| /** |
| * Mark an element which used to be shallow in the client, but which |
| * should now be considered a full commit. Any ancestors of this commit |
| * should be included in the walk, even if they are the ancestor of an |
| * uninteresting commit. |
| * |
| * @param c |
| * Commit to mark |
| * @throws MissingObjectException |
| * @throws IncorrectObjectTypeException |
| * @throws IOException |
| */ |
| public void markUnshallow(RevObject c) throws MissingObjectException, |
| IncorrectObjectTypeException, IOException { |
| if (c instanceof RevCommit) |
| c.add(UNSHALLOW); |
| super.markStart(c); |
| } |
| |
| @Override |
| protected RevCommit createCommit(AnyObjectId id) { |
| return new Commit(id); |
| } |
| |
| @Override |
| public int getDepth() { |
| return depth; |
| } |
| |
| @Override |
| public RevFlag getUnshallowFlag() { |
| return UNSHALLOW; |
| } |
| |
| @Override |
| public RevFlag getReinterestingFlag() { |
| return REINTERESTING; |
| } |
| } |
| } |