bundles/org.eclipse.emf.emfstore.client/src/org/eclipse/emf/emfstore/internal/client/provider/ProjectSpaceFileURIHandler.java

/*******************************************************************************
 * Copyright (c) 2012-2013 EclipseSource Muenchen GmbH 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:
 * Johannes Faltermeier - initial API and implementation
 ******************************************************************************/
package org.eclipse.emf.emfstore.internal.client.provider;

import java.io.File;
import java.io.IOException;
import java.util.HashSet;
import java.util.Map;

import org.apache.commons.io.FileUtils;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.resource.impl.FileURIHandlerImpl;

/**
 * Handler for projectspace file URIs. Adds functionality for successfully deleting temp folders.
 *
 * @author jfaltermeier
 *
 */
public class ProjectSpaceFileURIHandler extends FileURIHandlerImpl {

	private final HashSet<String> extensions;

	/**
	 * Constructor for {@link ProjectSpaceFileURIHandler}.
	 *
	 * @param extensions set of all file extensions this handler should handle.
	 */
	public ProjectSpaceFileURIHandler(HashSet<String> extensions) {
		this.extensions = extensions;
	}

	@Override
	public boolean canHandle(URI uri) {
		final String extension = "." + uri.fileExtension();
		return extensions.contains(extension);
	}

	@Override
	public void delete(URI uri, Map<?, ?> options) throws IOException {
		// TODO options?
		final File file = new File(uri.toFileString());
		final File parent = file.getParentFile();
		file.delete();

		if (parent != null && parent.exists() && parent.listFiles().length == 1
			&& parent.listFiles()[0].isDirectory()) {
			// if there is only one directory left, it's the temp folder.
			FileUtils.deleteDirectory(parent);
		}
	}

}