/*
 * Copyright (c) 2013 Cisco Systems, Inc. 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
 */
package org.opendaylight.protocol.pcep.impl.object;

import com.google.common.primitives.UnsignedBytes;

public class EROSubobjectUtil {

	private static final int HEADER_SIZE = 2;

	private EROSubobjectUtil() {
	}

	public static byte[] formatSubobject(final int type, final boolean loose, final byte[] value) {
		final byte[] bytes = new byte[HEADER_SIZE + value.length];
		bytes[0] = (byte) (UnsignedBytes.checkedCast(type) | (loose ? 1 << 7 : 0));
		bytes[1] = UnsignedBytes.checkedCast(value.length + HEADER_SIZE);
		System.arraycopy(value, 0, bytes, HEADER_SIZE, value.length);
		return bytes;
	}
}