EclipsePluginHelper.java

/*******************************************************************************
 * Copyright (c) 2006-2015
 * Software Technology Group, Dresden University of Technology
 * DevBoost GmbH, Dresden, Amtsgericht Dresden, HRB 34001
 * 
 * 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:
 *   Software Technology Group - TU Dresden, Germany;
 *   DevBoost GmbH - Dresden, Germany
 *      - initial API and implementation
 ******************************************************************************/
package de.devboost.buildboost.util;

import java.io.File;

/**
 * A utility class to process Eclipse plug-ins projects.
 */
public class EclipsePluginHelper {

	public final static EclipsePluginHelper INSTANCE = new EclipsePluginHelper();

	private EclipsePluginHelper() {
		super();
	}

	/**
	 * Checks whether the given directory contains a '.project' file.
	 */
	public boolean isProject(File directory) {
		if (!directory.isDirectory()) {
			return false;
		}

		File dotProjectFile = new File(directory, ".project");
		return dotProjectFile.exists();
	}

	/**
	 * Searches for a parent of the given file that is an Eclipse plug-in project. If no such parent is found, null is
	 * returned.
	 * 
	 * @param file
	 *            a file contained in an Eclipse plug-in project
	 * @return the directory root of the plug-in project
	 */
	public File findProjectDir(File file) {
		File parent = file.getParentFile();
		while (parent != null) {
			boolean isProject = isProject(parent);
			if (isProject) {
				return parent;
			}
			parent = parent.getParentFile();
		}
		return null;
	}

	/**
	 * Checks whether the given directory contains a 'META-INF/MANIFEST.MF' file.
	 */
	public boolean containsManifest(File directory) {
		File metaInfDir = new File(directory, "META-INF");
		if (!metaInfDir.exists()) {
			return false;
		}
		File manifestFile = new File(metaInfDir, "MANIFEST.MF");
		return manifestFile.exists();
	}
}