com.cedricwalter.maven.git.BranchNameDetector Maven / Gradle / Ivy

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When working with many feature/release/bugix/hotfix branches, it is a bad idea to start changing the pom version as this will create merge conflicts using pull request. this plugin allow you to keep in ALL branches the same pom version for all your projects, for example MASTER-SNAPSHOT the version will be derived from branch name automatically.

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/**
 * Copyright (c) 2017-2017 by Cédric Walter - www.cedricwalter.com
 *
 * TVProgram is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * TVProgram is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see .
 */
package com.cedricwalter.maven.git;

import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.lib.RepositoryCache;
import org.eclipse.jgit.util.FS;

import java.io.File;
import java.io.IOException;

public class BranchNameDetector {

    public static String getBranchName(String pathname) throws IOException {
        if (inTravis()) {
            return getTravisBranch();
        } else {
            File directory = new File(pathname);

            Repository repository =
                    RepositoryCache.open(
                            RepositoryCache.FileKey.lenient(directory, FS.DETECTED),
                            true);
            return repository.getBranch();
        }
    }

    private static boolean inTravis() {
        String travis = System.getProperty("TRAVIS");

        return !"".equals(travis) && "true".equals(travis);
    }

    private static String getTravisBranch() {
        // for push builds, or builds not triggered by a pull request, this is the name of the branch.
        // for builds triggered by a pull request this is the name of the branch targeted by the pull request.
        return System.getProperty("TRAVIS_BRANCH");
    }

}