GitHelper.java

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package com.aspose.words.maven.utils;

import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.internal.storage.file.FileRepository;
import org.eclipse.jgit.lib.Repository;

import java.io.File;

/**
 * @author Adeel Ilyas
 *
 */
public class GitHelper {

    /**
     *
     * @param localPath
     * @param remotePath
     * @throws Exception
     */
    public static void updateRepository(String localPath, String remotePath) throws Exception {
        Repository localRepo;
        try {
            localRepo = new FileRepository(localPath + "/.git");

            Git git = new Git(localRepo);

            // First try to clone the repository
            try {
                Git.cloneRepository().setURI(remotePath).setDirectory(new File(localPath)).call();
            } catch (Exception ex) {
                // If clone fails, try to pull the changes
                try {
                    git.pull().call();
                } catch (Exception exPull) {
                    // Pull also failed. Throw this exception to caller
                    throw exPull; // throw it
                }
            }
        } catch (Exception ex) {
            throw new Exception("Could not download Repository from Github. Error: " + ex.getMessage());
        }
    }

    /**
     *
     * @param localPath
     * @param remotePath
     * @throws Exception
     */
    public static void syncRepository(String localPath, String remotePath) throws Exception {
        Repository localRepo;
        try {
            localRepo = new FileRepository(localPath + "/.git");

            Git git = new Git(localRepo);

            // Pull the changes
            try {
                git.pull().call();
            } catch (Exception exPull) {
                // If pull failed. Throw this exception to caller

                throw exPull; // throw it
            }

        } catch (Exception ex) {
            throw new Exception("Could not update Repository from Github. Error: " + ex.getMessage());
        }
    }

}