ProjectDescReader.java

/*******************************************************************************
 * Copyright (c) 2004, 2006
 * Thomas Hallgren, Kenneth Olwing, Mitch Sonies
 * Pontus Rydin, Nils Unden, Peer Torngren
 * The code, documentation and other materials contained herein have been
 * licensed under the Eclipse Public License - v 1.0 by the individual
 * copyright holders listed above, as Initial Contributors under such license.
 * The text of such license is available at www.eclipse.org.
 *******************************************************************************/

package org.eclipse.buckminster.core.reader;

import java.io.IOException;
import java.io.InputStream;

import org.eclipse.buckminster.core.Messages;
import org.eclipse.buckminster.runtime.BuckminsterException;
import org.eclipse.buckminster.runtime.MonitorUtils;
import org.eclipse.core.resources.IProjectDescription;
import org.eclipse.core.resources.IWorkspace;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;

/**
 * A IStreamConsumer responsible for reading and parsing a <code>.project</code>
 * file.
 * 
 * @author thhal
 */
public class ProjectDescReader implements IStreamConsumer<IProjectDescription> {
	public static IProjectDescription getProjectDescription(IComponentReader reader, IProgressMonitor monitor) throws CoreException {
		ProjectDescReader pdr = new ProjectDescReader();
		try {
			IProjectDescription projDesc;
			if (reader instanceof ICatalogReader)
				projDesc = ((ICatalogReader) reader).readFile(IProjectDescription.DESCRIPTION_FILE_NAME, pdr, monitor);
			else
				projDesc = ((IFileReader) reader).readFile(pdr, monitor);
			return projDesc;
		} catch (IOException e) {
			throw BuckminsterException.wrap(e);
		}
	}

	@Override
	public IProjectDescription consumeStream(IComponentReader fileReader, String streamName, InputStream stream, IProgressMonitor monitor)
			throws CoreException {
		monitor = MonitorUtils.ensureNotNull(monitor);
		try {
			monitor.beginTask(null, 1);
			monitor.subTask(Messages.Loading_project_description);
			IWorkspace ws = ResourcesPlugin.getWorkspace();
			synchronized (ws) {
				IProjectDescription pd = ws.loadProjectDescription(stream);
				MonitorUtils.worked(monitor, 1);
				return pd;
			}
		} finally {
			monitor.done();
		}
	}
}