org.eclipse.emf.compare.egit.internal.ModelEGitResourceUtil.java Source code

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Here is the source code for org.eclipse.emf.compare.egit.internal.ModelEGitResourceUtil.java

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/*******************************************************************************
 * Copyright (C) 2015, Obeo.
 *
 * 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
 *******************************************************************************/
package org.eclipse.emf.compare.egit.internal;

//CHECKSTYLE:OFF
import java.io.File;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.egit.core.GitProvider;
import org.eclipse.egit.core.internal.util.ResourceUtil;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.team.core.RepositoryProvider;

/**
 * Resource utilities.
 * 
 * @author <a href="mailto:laurent.goubet@obeo.fr">Laurent Goubet</a>
 */
@SuppressWarnings("restriction")
public class ModelEGitResourceUtil extends ResourceUtil {

    public static IResource getResourceHandleForLocation(Repository repository, String repoRelativePath,
            boolean isFolder) {
        final String workDir = repository.getWorkTree().getAbsolutePath();
        final IPath path = new Path(workDir + '/' + repoRelativePath);
        final File file = path.toFile();
        if (file.exists()) {
            if (isFolder) {
                return ResourceUtil.getContainerForLocation(path, false);
            }
            return ResourceUtil.getFileForLocation(path, false);
        }

        // This is a file that no longer exists locally, yet we still need to
        // determine an IResource for it.
        // Try and find a Project in the workspace which path is a prefix of the
        // file we seek and which is mapped to the current repository.
        final IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
        for (IProject project : root.getProjects()) {
            if (RepositoryProvider.getProvider(project, GitProvider.ID) != null) {
                final IPath projectLocation = project.getLocation();
                if (projectLocation != null && projectLocation.isPrefixOf(path)) {
                    final IPath projectRelativePath = path.makeRelativeTo(projectLocation);
                    if (isFolder) {
                        return project.getFolder(projectRelativePath);
                    } else {
                        return project.getFile(projectRelativePath);
                    }
                }
            }
        }
        return null;
    }
}
// CHECKSTYLE:ON