Copyright (c) 2000, 2016 IBM Corporation and others.
This program and the accompanying materials
are made available under the terms of the Eclipse Public License 2.0
which accompanies this distribution, and is available at
https://www.eclipse.org/legal/epl-2.0/
SPDX-License-Identifier: EPL-2.0
Contributors:
    IBM Corporation - initial API and implementation
    Mickael Istria (Red Hat Inc.) - Bug 488937
/*******************************************************************************
 * Copyright (c) 2000, 2016 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *     Mickael Istria (Red Hat Inc.) - Bug 488937
 *******************************************************************************/
package org.eclipse.core.internal.resources;

import java.io.DataInputStream;
import java.io.IOException;
import org.eclipse.core.internal.utils.Messages;
import org.eclipse.osgi.util.NLS;

public class SyncInfoSnapReader {
	protected Workspace workspace;
	protected Synchronizer synchronizer;

	public SyncInfoSnapReader(Workspace workspace, Synchronizer synchronizer) {
		super();
		this.workspace = workspace;
		this.synchronizer = synchronizer;
	}

	
Returns the appropriate reader for the given version.
/**
	 * Returns the appropriate reader for the given version.
	 */
	protected SyncInfoSnapReader getReader(int formatVersion) throws IOException {
		switch (formatVersion) {
			case 3 :
				return new SyncInfoSnapReader_3(workspace, synchronizer);
			default :
				throw new IOException(NLS.bind(Messages.resources_format, formatVersion));
		}
	}

	public void readSyncInfo(DataInputStream input) throws IOException {
		// dispatch to the appropriate reader depending
		// on the version of the file
		int formatVersion = readVersionNumber(input);
		SyncInfoSnapReader reader = getReader(formatVersion);
		reader.readSyncInfo(input);
	}

	protected static int readVersionNumber(DataInputStream input) throws IOException {
		return input.readInt();
	}
}