com.buildautomation.jgit.api.ShowBranchTrackingStatus.java Source code

Introduction

Here is the source code for com.buildautomation.jgit.api.ShowBranchTrackingStatus.java

Source

package com.buildautomation.jgit.api;

/*
 * Copyright 2013, 2014 Dominik Stadler
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.lib.BranchTrackingStatus;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.Repository;

/**
 * Snippet which shows how to use BranchTrackingStatus to print
 * how many commits away the local git repository is from the
 * remote branches.
 *
 * @author dominik.stadler at gmx.at
 */
public class ShowBranchTrackingStatus {

    public static void showBranchTrackingStatus() throws IOException, GitAPIException {
        try (Repository repository = CookbookHelper.openJGitCookbookRepository()) {
            try (Git git = new Git(repository)) {
                List<Ref> call = git.branchList().call();
                for (Ref ref : call) {
                    List<Integer> counts = getCounts(repository, ref.getName());
                    System.out.println("For branch: " + ref.getName());
                    System.out.println("Commits ahead : " + counts.get(0));
                    System.out.println("Commits behind : " + counts.get(1));
                    System.out.println();
                }
            }
        }
    }

    private static List<Integer> getCounts(org.eclipse.jgit.lib.Repository repository, String branchName)
            throws IOException {
        BranchTrackingStatus trackingStatus = BranchTrackingStatus.of(repository, branchName);
        List<Integer> counts = new ArrayList<>();
        if (trackingStatus != null) {
            counts.add(trackingStatus.getAheadCount());
            counts.add(trackingStatus.getBehindCount());
        } else {
            System.out.println("Returned null, likely no remote tracking of branch " + branchName);
            counts.add(0);
            counts.add(0);
        }
        return counts;
    }
}