org.eclipse.egit.core.synchronize.GitFolderResourceVariant.java Source code

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Here is the source code for org.eclipse.egit.core.synchronize.GitFolderResourceVariant.java

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/*******************************************************************************
 * Copyright (c) 2010 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *     Dariusz Luksza <dariusz@luksza.org>
 *******************************************************************************/
package org.eclipse.egit.core.synchronize;

import static org.eclipse.jgit.lib.ObjectId.zeroId;

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

import org.eclipse.core.resources.IStorage;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.OperationCanceledException;
import org.eclipse.core.runtime.SubMonitor;
import org.eclipse.egit.core.CoreText;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.treewalk.FileTreeIterator;
import org.eclipse.jgit.treewalk.TreeWalk;
import org.eclipse.jgit.treewalk.filter.NotIgnoredFilter;
import org.eclipse.osgi.util.NLS;
import org.eclipse.team.core.TeamException;
import org.eclipse.team.core.variants.IResourceVariant;

/**
 *
 */
public class GitFolderResourceVariant extends GitResourceVariant {

    private IResourceVariant members[];

    GitFolderResourceVariant(Repository repo, RevCommit revCommit, ObjectId objectId, String path)
            throws IOException {
        super(repo, revCommit, objectId, path);
    }

    public boolean isContainer() {
        return true;
    }

    public IStorage getStorage(IProgressMonitor monitor) throws TeamException {
        return null;
    }

    /**
     * @param progress
     * @return members
     * @throws IOException
     */
    public IResourceVariant[] getMembers(IProgressMonitor progress) throws IOException {
        if (members != null)
            try {
                return members;
            } finally {
                progress.done();
            }

        Repository repo = getRepository();
        TreeWalk tw = new TreeWalk(repo);
        tw.reset();

        int nth = tw.addTree(getObjectId());
        int iteratorNth = tw.addTree(new FileTreeIterator(repo));

        tw.setFilter(new NotIgnoredFilter(iteratorNth));

        IProgressMonitor monitor = SubMonitor.convert(progress);
        monitor.beginTask(NLS.bind(CoreText.GitFolderResourceVariant_fetchingMembers, this), tw.getTreeCount());

        List<IResourceVariant> result = new ArrayList<IResourceVariant>();
        try {
            while (tw.next()) {
                if (monitor.isCanceled())
                    throw new OperationCanceledException();

                ObjectId newObjectId = tw.getObjectId(nth);
                String path = getPath() + "/" + new String(tw.getRawPath()); //$NON-NLS-1$
                if (!newObjectId.equals(zeroId()))
                    if (tw.isSubtree())
                        result.add(new GitFolderResourceVariant(repo, getRevCommit(), newObjectId, path));
                    else
                        result.add(new GitBlobResourceVariant(repo, getRevCommit(), newObjectId, path));
                monitor.worked(1);
            }

            members = result.toArray(new IResourceVariant[result.size()]);
            return members;
        } finally {
            monitor.done();
        }
    }

}