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- /*
- * 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 {
- /** @return Depth to filter to. */
- public int getDepth();
-
- /** @return flag marking commits that should become unshallow. */
- public RevFlag getUnshallowFlag();
-
- /** @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);
- }
-
- public int getDepth() {
- return depth;
- }
-
- public RevFlag getUnshallowFlag() {
- return UNSHALLOW;
- }
-
- public RevFlag getReinterestingFlag() {
- return REINTERESTING;
- }
-
- @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);
- }
-
- public int getDepth() {
- return depth;
- }
-
- public RevFlag getUnshallowFlag() {
- return UNSHALLOW;
- }
-
- public RevFlag getReinterestingFlag() {
- return REINTERESTING;
- }
- }
- }
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