| /* |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.qpid.transport.codec; |
| |
| import org.apache.qpid.transport.Binary; |
| |
| import java.nio.ByteBuffer; |
| import java.nio.ByteOrder; |
| |
| /** |
| * Byte Buffer Decoder. |
| * Decoder concrete implementor using a backing byte buffer for decoding data. |
| * |
| * @author Rafael H. Schloming |
| */ |
| public final class BBDecoder extends AbstractDecoder |
| { |
| private ByteBuffer in; |
| |
| public void init(ByteBuffer in) |
| { |
| this.in = in; |
| this.in.order(ByteOrder.BIG_ENDIAN); |
| } |
| |
| public void releaseBuffer() |
| { |
| in = null; |
| } |
| |
| protected byte doGet() |
| { |
| return in.get(); |
| } |
| |
| protected void doGet(byte[] bytes) |
| { |
| in.get(bytes); |
| } |
| |
| protected Binary get(int size) |
| { |
| if (in.hasArray()) |
| { |
| byte[] bytes = in.array(); |
| Binary bin = new Binary(bytes, in.arrayOffset() + in.position(), size); |
| in.position(in.position() + size); |
| return bin; |
| } |
| else |
| { |
| return super.get(size); |
| } |
| } |
| |
| public boolean hasRemaining() |
| { |
| return in.hasRemaining(); |
| } |
| |
| public short readUint8() |
| { |
| return (short) (0xFF & in.get()); |
| } |
| |
| public int readUint16() |
| { |
| return 0xFFFF & in.getShort(); |
| } |
| |
| public long readUint32() |
| { |
| return 0xFFFFFFFFL & in.getInt(); |
| } |
| |
| public long readUint64() |
| { |
| return in.getLong(); |
| } |
| |
| public byte[] readBin128() |
| { |
| byte[] result = new byte[16]; |
| get(result); |
| return result; |
| } |
| |
| public byte[] readBytes(int howManyBytes) |
| { |
| byte[] result = new byte[howManyBytes]; |
| get(result); |
| return result; |
| } |
| |
| public double readDouble() |
| { |
| return in.getDouble(); |
| } |
| |
| public float readFloat() |
| { |
| return in.getFloat(); |
| } |
| |
| public short readInt16() |
| { |
| return in.getShort(); |
| } |
| |
| public int readInt32() |
| { |
| return in.getInt(); |
| } |
| |
| public byte readInt8() |
| { |
| return in.get(); |
| } |
| |
| public byte[] readRemainingBytes() |
| { |
| byte[] result = new byte[in.limit() - in.position()]; |
| get(result); |
| return result; |
| } |
| |
| public long readInt64() |
| { |
| return in.getLong(); |
| } |
| } |