| /* |
| * Copyright (C) 2011, Robin Stocker <robin@nibor.org> |
| * Copyright (C) 2012, Matthias Sohn <matthias.sohn@sap.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.lib; |
| |
| import java.io.IOException; |
| |
| import org.eclipse.jgit.revwalk.RevCommit; |
| import org.eclipse.jgit.revwalk.RevWalk; |
| import org.eclipse.jgit.revwalk.RevWalkUtils; |
| import org.eclipse.jgit.revwalk.filter.RevFilter; |
| |
| /** |
| * Status of a branch's relation to its remote-tracking branch. |
| */ |
| public class BranchTrackingStatus { |
| |
| /** |
| * Compute the tracking status for the <code>branchName</code> in |
| * <code>repository</code>. |
| * |
| * @param repository |
| * the git repository to compute the status from |
| * @param branchName |
| * the local branch |
| * @return the tracking status, or null if it is not known |
| * @throws java.io.IOException |
| */ |
| public static BranchTrackingStatus of(Repository repository, String branchName) |
| throws IOException { |
| |
| String shortBranchName = Repository.shortenRefName(branchName); |
| String fullBranchName = Constants.R_HEADS + shortBranchName; |
| BranchConfig branchConfig = new BranchConfig(repository.getConfig(), |
| shortBranchName); |
| |
| String trackingBranch = branchConfig.getTrackingBranch(); |
| if (trackingBranch == null) |
| return null; |
| |
| Ref tracking = repository.exactRef(trackingBranch); |
| if (tracking == null) |
| return null; |
| |
| Ref local = repository.exactRef(fullBranchName); |
| if (local == null) |
| return null; |
| |
| try (RevWalk walk = new RevWalk(repository)) { |
| |
| RevCommit localCommit = walk.parseCommit(local.getObjectId()); |
| RevCommit trackingCommit = walk.parseCommit(tracking.getObjectId()); |
| |
| walk.setRevFilter(RevFilter.MERGE_BASE); |
| walk.markStart(localCommit); |
| walk.markStart(trackingCommit); |
| RevCommit mergeBase = walk.next(); |
| |
| walk.reset(); |
| walk.setRevFilter(RevFilter.ALL); |
| int aheadCount = RevWalkUtils.count(walk, localCommit, mergeBase); |
| int behindCount = RevWalkUtils.count(walk, trackingCommit, |
| mergeBase); |
| |
| return new BranchTrackingStatus(trackingBranch, aheadCount, |
| behindCount); |
| } |
| } |
| |
| private final String remoteTrackingBranch; |
| |
| private final int aheadCount; |
| |
| private final int behindCount; |
| |
| private BranchTrackingStatus(String remoteTrackingBranch, int aheadCount, |
| int behindCount) { |
| this.remoteTrackingBranch = remoteTrackingBranch; |
| this.aheadCount = aheadCount; |
| this.behindCount = behindCount; |
| } |
| |
| /** |
| * Get full remote-tracking branch name |
| * |
| * @return full remote-tracking branch name |
| */ |
| public String getRemoteTrackingBranch() { |
| return remoteTrackingBranch; |
| } |
| |
| /** |
| * Get number of commits that the local branch is ahead of the |
| * remote-tracking branch |
| * |
| * @return number of commits that the local branch is ahead of the |
| * remote-tracking branch |
| */ |
| public int getAheadCount() { |
| return aheadCount; |
| } |
| |
| /** |
| * Get number of commits that the local branch is behind of the |
| * remote-tracking branch |
| * |
| * @return number of commits that the local branch is behind of the |
| * remote-tracking branch |
| */ |
| public int getBehindCount() { |
| return behindCount; |
| } |
| } |