com.tenxdev.ovcs.command.StatusCommand.java Source code

Introduction

Here is the source code for com.tenxdev.ovcs.command.StatusCommand.java

Source

/*
 * Copyright 2015 Abed Tony BenBrahim <tony.benbrahim@10xdev.com> This file is
 * part of OVCS.
 *
 * OVCS 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.
 *
 * OVCS 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
 * OVCS. If not, see <http://www.gnu.org/licenses/>.
 */
package com.tenxdev.ovcs.command;

import java.util.Set;

import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.api.Status;
import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.errors.NoWorkTreeException;
import org.eclipse.jgit.internal.storage.file.FileRepository;

import com.tenxdev.ovcs.OvcsException;
import com.tenxdev.ovcs.UsageException;

/**
 * implementation of status command
 *
 * @author Tony BenBrahim <tony.benbrahim@10xdev.com>
 *
 */
public class StatusCommand extends AbstractChangeCommand {

    /**
     * command usage
     */
    private static final String USAGE = "    ovcs status";

    /**
     * {@inheritDoc}
     */
    @Override
    public void execute(final String... args) throws OvcsException {
        if (args.length != 1) {
            throw new UsageException(USAGE);
        }
        System.out.println("Fetching changes from database...");
        final FileRepository repository = getRepoForCurrentDir();
        try {
            writeChanges(repository);
            displayChanges(repository);
        } finally {
            repository.close();
        }
    }

    private void displayChanges(final FileRepository repository) throws OvcsException {
        try {
            final Status status = new Git(repository).status().call();
            if (status.isClean()) {
                System.out.println("No changes.");
            } else {
                displayChanges("Added", status.getUntracked());
                displayChanges("Modified", status.getModified());
                displayChanges("Removed", status.getMissing());
            }
        } catch (NoWorkTreeException | GitAPIException e) {
            throw new OvcsException("Unable to query git status: " + e.getMessage(), e);
        }
    }

    private void displayChanges(final String title, final Set<String> filenames) {
        if (!filenames.isEmpty()) {
            System.out.println(title + ":");
            for (final String filename : filenames) {
                System.out.println("\t" + filename);
            }
        }
    }

}