Java tutorial
/* * Copyright (c) 2014 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.spi; import io.netty.buffer.ByteBuf; public final class TlvUtil { public static final int HEADER_SIZE = 4; public static final int PADDED_TO = 4; private TlvUtil() { throw new UnsupportedOperationException(); } public static void formatTlv(final int type, final ByteBuf body, final ByteBuf out) { out.writeShort(type); out.writeShort(body.writerIndex()); out.writeBytes(body); out.writeZero(getPadding(HEADER_SIZE + body.writerIndex(), PADDED_TO)); } public static int getPadding(final int length, final int padding) { return (padding - (length % padding)) % padding; } }