org.spout.api.protocol.replayable.ReplayableByteBuf.java Source code

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Here is the source code for org.spout.api.protocol.replayable.ReplayableByteBuf.java

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/*
 * This file is part of Spout.
 *
 * Copyright (c) 2011 Spout LLC <http://www.spout.org/>
 * Spout is licensed under the Spout License Version 1.
 *
 * Spout is free software: you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation, either version 3 of the License, or (at your option)
 * any later version.
 *
 * In addition, 180 days after any changes are published, you can use the
 * software, incorporating those changes, under the terms of the MIT license,
 * as described in the Spout License Version 1.
 *
 * Spout is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
 * more details.
 *
 * You should have received a copy of the GNU Lesser General Public License,
 * the MIT license and the Spout License Version 1 along with this program.
 * If not, see <http://www.gnu.org/licenses/> for the GNU Lesser General Public
 * License and see <http://spout.in/licensev1> for the full license, including
 * the MIT license.
 */
package org.spout.api.protocol.replayable;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.channels.GatheringByteChannel;
import java.nio.channels.ScatteringByteChannel;
import java.nio.charset.Charset;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufAllocator;
import io.netty.buffer.ByteBufProcessor;

public class ReplayableByteBuf extends ByteBuf {
    private final static ReplayableException ERROR_INSTANCE = new ReplayableException("");
    private ByteBuf buffer;

    public ByteBuf setBuffer(ByteBuf buffer) {
        this.buffer = buffer;
        return this;
    }

    @Override
    public int capacity() {
        return Integer.MAX_VALUE;
    }

    @Override
    public ByteOrder order() {
        return buffer.order();
    }

    @Override
    public boolean isDirect() {
        return buffer.isDirect();
    }

    @Override
    public int readerIndex() {
        return buffer.readerIndex();
    }

    @Override
    public ByteBuf readerIndex(int readerIndex) {
        indexRangeCheck(readerIndex);
        buffer.readerIndex(readerIndex);
        return this;
    }

    @Override
    public int writerIndex() {
        return buffer.writerIndex();
    }

    @Override
    public ByteBuf writerIndex(int writerIndex) {
        indexRangeCheck(writerIndex);
        return this;
    }

    @Override
    public ByteBuf setIndex(int readerIndex, int writerIndex) {
        indexRangeCheck(readerIndex);
        indexRangeCheck(writerIndex);
        buffer.setIndex(readerIndex, writerIndex);
        return this;
    }

    @Override
    public int readableBytes() {
        return Integer.MAX_VALUE - buffer.readableBytes();
    }

    @Override
    public int writableBytes() {
        return buffer.writableBytes();
    }

    @Override
    public boolean isReadable() {
        return true;
    }

    @Override
    public boolean isWritable() {
        return buffer.isWritable();
    }

    @Override
    public ByteBuf clear() {
        return unsupported();
    }

    @Override
    public ByteBuf markReaderIndex() {
        buffer.markReaderIndex();
        return this;
    }

    @Override
    public ByteBuf resetReaderIndex() {
        buffer.resetReaderIndex();
        return this;
    }

    @Override
    public ByteBuf markWriterIndex() {
        buffer.markWriterIndex();
        return this;
    }

    @Override
    public ByteBuf resetWriterIndex() {
        buffer.resetWriterIndex();
        return this;
    }

    @Override
    public ByteBuf discardReadBytes() {
        return unsupported();
    }

    @Override
    public byte getByte(int index) {
        checkAvail(index, 1);
        return buffer.getByte(index);
    }

    @Override
    public short getUnsignedByte(int index) {
        checkAvail(index, 1);
        return buffer.getUnsignedByte(index);
    }

    @Override
    public short getShort(int index) {
        checkAvail(index, 2);
        return buffer.getShort(index);
    }

    @Override
    public int getUnsignedShort(int index) {
        checkAvail(index, 2);
        return buffer.getUnsignedShort(index);
    }

    @Override
    public int getMedium(int index) {
        checkAvail(index, 3);
        return buffer.getMedium(index);
    }

    @Override
    public int getUnsignedMedium(int index) {
        checkAvail(index, 3);
        return buffer.getUnsignedMedium(index);
    }

    @Override
    public int getInt(int index) {
        checkAvail(index, 4);
        return buffer.getInt(index);
    }

    @Override
    public long getUnsignedInt(int index) {
        checkAvail(index, 4);
        return buffer.getUnsignedInt(index);
    }

    @Override
    public long getLong(int index) {
        checkAvail(index, 8);
        return buffer.getLong(index);
    }

    @Override
    public char getChar(int index) {
        checkAvail(index, 2);
        return buffer.getChar(index);
    }

    @Override
    public float getFloat(int index) {
        checkAvail(index, 4);
        return buffer.getFloat(index);
    }

    @Override
    public double getDouble(int index) {
        checkAvail(index, 4);
        return buffer.getFloat(index);
    }

    @Override
    public ByteBuf getBytes(int index, ByteBuf dst) {
        return unsupported();
    }

    @Override
    public ByteBuf getBytes(int index, ByteBuf dst, int length) {
        return unsupported();
    }

    @Override
    public ByteBuf getBytes(int index, ByteBuf dst, int dstIndex, int length) {
        return unsupported();
    }

    @Override
    public ByteBuf getBytes(int index, byte[] dst) {
        checkAvail(index, dst.length);
        buffer.getBytes(index, dst);
        return this;
    }

    @Override
    public ByteBuf getBytes(int index, byte[] dst, int dstIndex, int length) {
        checkAvail(index, length);
        buffer.getBytes(index, dst, dstIndex, length);
        return this;
    }

    @Override
    public ByteBuf getBytes(int index, ByteBuffer dst) {
        return unsupported();
    }

    @Override
    public ByteBuf getBytes(int index, OutputStream out, int length) throws IOException {
        return unsupported();
    }

    @Override
    public int getBytes(int index, GatheringByteChannel out, int length) throws IOException {
        return unsupported();
    }

    @Override
    public ByteBuf setByte(int index, int value) {
        return unsupported();
    }

    @Override
    public ByteBuf setShort(int index, int value) {
        return unsupported();
    }

    @Override
    public ByteBuf setMedium(int index, int value) {
        return unsupported();
    }

    @Override
    public ByteBuf setInt(int index, int value) {
        return unsupported();
    }

    @Override
    public ByteBuf setLong(int index, long value) {
        return unsupported();
    }

    @Override
    public ByteBuf setChar(int index, int value) {
        return unsupported();
    }

    @Override
    public ByteBuf setFloat(int index, float value) {
        return unsupported();
    }

    @Override
    public ByteBuf setDouble(int index, double value) {
        return unsupported();
    }

    @Override
    public ByteBuf setBytes(int index, ByteBuf src) {
        return unsupported();
    }

    @Override
    public ByteBuf setBytes(int index, ByteBuf src, int length) {
        return unsupported();
    }

    @Override
    public ByteBuf setBytes(int index, ByteBuf src, int srcIndex, int length) {
        return unsupported();
    }

    @Override
    public ByteBuf setBytes(int index, byte[] src) {
        return unsupported();
    }

    @Override
    public ByteBuf setBytes(int index, byte[] src, int srcIndex, int length) {
        return unsupported();
    }

    @Override
    public ByteBuf setBytes(int index, ByteBuffer src) {
        return unsupported();
    }

    @Override
    public int setBytes(int index, InputStream in, int length) throws IOException {
        return unsupported();
    }

    @Override
    public int setBytes(int index, ScatteringByteChannel in, int length) throws IOException {
        return unsupported();
    }

    @Override
    public ByteBuf setZero(int index, int length) {
        return unsupported();
    }

    @Override
    public byte readByte() {
        checkAvail(1);
        return buffer.readByte();
    }

    @Override
    public short readUnsignedByte() {
        checkAvail(1);
        return buffer.readUnsignedByte();
    }

    @Override
    public short readShort() {
        checkAvail(2);
        return buffer.readShort();
    }

    @Override
    public int readUnsignedShort() {
        checkAvail(2);
        return buffer.readUnsignedShort();
    }

    @Override
    public int readMedium() {
        checkAvail(3);
        return buffer.readMedium();
    }

    @Override
    public int readUnsignedMedium() {
        checkAvail(3);
        return buffer.readUnsignedMedium();
    }

    @Override
    public int readInt() {
        checkAvail(4);
        return buffer.readInt();
    }

    @Override
    public long readUnsignedInt() {
        checkAvail(4);
        return buffer.readInt();
    }

    @Override
    public long readLong() {
        checkAvail(8);
        return buffer.readLong();
    }

    @Override
    public char readChar() {
        checkAvail(2);
        return buffer.readChar();
    }

    @Override
    public float readFloat() {
        checkAvail(4);
        return buffer.readFloat();
    }

    @Override
    public double readDouble() {
        checkAvail(8);
        return buffer.readDouble();
    }

    @Override
    public ByteBuf readBytes(int length) {
        checkAvail(length);
        int readable = buffer.readableBytes();
        try {
            return buffer.readBytes(length);
        } catch (ReplayableException e) {
            System.out.println("Error: readable = " + readable + " length = " + length);
            throw e;
        }
    }

    @Override
    public ByteBuf readSlice(int length) {
        checkAvail(length);
        return buffer.readSlice(length);
    }

    @Override
    public ByteBuf readBytes(ByteBuf dst) {
        return unsupported();
    }

    @Override
    public ByteBuf readBytes(ByteBuf dst, int length) {
        return unsupported();
    }

    @Override
    public ByteBuf readBytes(ByteBuf dst, int dstIndex, int length) {
        checkAvail(length);
        buffer.readBytes(dst, dstIndex, length);
        return this;
    }

    @Override
    public ByteBuf readBytes(byte[] dst) {
        checkAvail(dst.length);
        try {
            buffer.readBytes(dst);
        } catch (ReplayableException e) {
            throw e;
        }
        return this;
    }

    @Override
    public ByteBuf readBytes(byte[] dst, int dstIndex, int length) {
        checkAvail(length);
        buffer.readBytes(dst, dstIndex, length);
        return this;
    }

    @Override
    public ByteBuf readBytes(ByteBuffer dst) {
        return unsupported();
    }

    @Override
    public ByteBuf readBytes(OutputStream out, int length) throws IOException {
        return unsupported();
    }

    @Override
    public int readBytes(GatheringByteChannel out, int length) throws IOException {
        return unsupported();
    }

    @Override
    public ByteBuf skipBytes(int length) {
        checkAvail(length);
        buffer.skipBytes(length);
        return this;
    }

    @Override
    public ByteBuf writeByte(int value) {
        return unsupported();
    }

    @Override
    public ByteBuf writeShort(int value) {
        return unsupported();
    }

    @Override
    public ByteBuf writeMedium(int value) {
        return unsupported();
    }

    @Override
    public int writeBytes(InputStream in, int length) throws IOException {
        return unsupported();
    }

    @Override
    public int writeBytes(ScatteringByteChannel in, int length) throws IOException {
        return unsupported();
    }

    @Override
    public ByteBuf writeBoolean(boolean value) {
        return unsupported();
    }

    @Override
    public ByteBuf writeInt(int value) {
        return unsupported();
    }

    @Override
    public ByteBuf writeLong(long value) {
        return unsupported();
    }

    @Override
    public ByteBuf writeChar(int value) {
        return unsupported();
    }

    @Override
    public ByteBuf writeFloat(float value) {
        return unsupported();
    }

    @Override
    public ByteBuf writeDouble(double value) {
        return unsupported();
    }

    @Override
    public ByteBuf writeBytes(ByteBuf src) {
        return unsupported();
    }

    @Override
    public ByteBuf writeBytes(ByteBuf src, int length) {
        return unsupported();
    }

    @Override
    public ByteBuf writeBytes(ByteBuf src, int srcIndex, int length) {
        return unsupported();
    }

    @Override
    public ByteBuf writeBytes(byte[] src) {
        return unsupported();
    }

    @Override
    public ByteBuf writeBytes(byte[] src, int srcIndex, int length) {
        return unsupported();
    }

    @Override
    public ByteBuf writeBytes(ByteBuffer src) {
        return unsupported();
    }

    @Override
    public ByteBuf writeZero(int length) {
        return unsupported();
    }

    @Override
    public int indexOf(int fromIndex, int toIndex, byte value) {
        indexRangeCheck(toIndex);
        indexRangeCheck(fromIndex);
        return buffer.indexOf(fromIndex, toIndex, value);
    }

    @Override
    public int bytesBefore(byte value) {
        return unsupported();
    }

    @Override
    public int bytesBefore(int length, byte value) {
        return unsupported();
    }

    @Override
    public int bytesBefore(int index, int length, byte value) {
        return unsupported();
    }

    @Override
    public ByteBuf copy() {
        return unsupported();
    }

    @Override
    public ByteBuf copy(int index, int length) {
        checkAvail(index, length);
        return buffer.copy(index, length);
    }

    @Override
    public ByteBuf slice() {
        return buffer.slice();
    }

    @Override
    public ByteBuf slice(int index, int length) {
        checkAvail(index, length);
        return buffer.slice(index, length);
    }

    @Override
    public ByteBuf duplicate() {
        return buffer.duplicate();
    }

    @Override
    public boolean hasArray() {
        return false;
    }

    @Override
    public byte[] array() {
        return unsupported();
    }

    @Override
    public int arrayOffset() {
        return unsupported();
    }

    @Override
    public String toString(Charset charset) {
        return buffer.toString();
    }

    @Override
    public String toString(int index, int length, Charset charset) {
        checkAvail(index, length);
        return buffer.toString(index, length, charset);
    }

    @Override
    public int compareTo(ByteBuf buffer) {
        return unsupported();
    }

    private <R> R unsupported() {
        throw new UnsupportedOperationException("This method is not supported for a replayable channel buffer");
    }

    private void indexRangeCheck(int index) {
        checkAvail(index, 0);
    }

    private void checkAvail(int length) {
        if (buffer.readableBytes() < length) {
            throw ERROR_INSTANCE;
        }
    }

    private void checkAvail(int index, int length) {
        if (index + length > buffer.writerIndex()) {
            throw ERROR_INSTANCE;
        }
    }

    @Override
    public ByteBuf capacity(int newCapacity) {
        buffer.capacity(newCapacity);
        return this;
    }

    @Override
    public int maxCapacity() {
        return buffer.maxCapacity();
    }

    @Override
    public ByteBufAllocator alloc() {
        return unsupported();
    }

    @Override
    public ByteBuf order(ByteOrder endianness) {
        return unsupported();
    }

    @Override
    public ByteBuf unwrap() {
        return unsupported();
    }

    @Override
    public int maxWritableBytes() {
        return unsupported();
    }

    @Override
    public boolean isReadable(int size) {
        return false;
    }

    @Override
    public boolean isWritable(int size) {
        return buffer.isWritable(size);
    }

    @Override
    public ByteBuf discardSomeReadBytes() {
        return unsupported();
    }

    @Override
    public ByteBuf ensureWritable(int minWritableBytes) {
        buffer.ensureWritable(minWritableBytes);
        return this;
    }

    @Override
    public int ensureWritable(int minWritableBytes, boolean force) {
        return buffer.ensureWritable(minWritableBytes, force);
    }

    @Override
    public boolean getBoolean(int index) {
        return unsupported();
    }

    @Override
    public ByteBuf setBoolean(int index, boolean value) {
        buffer.setBoolean(index, value);
        return this;
    }

    @Override
    public boolean readBoolean() {
        return unsupported();
    }

    @Override
    public int forEachByte(ByteBufProcessor processor) {
        return unsupported();
    }

    @Override
    public int forEachByte(int index, int length, ByteBufProcessor processor) {
        return unsupported();
    }

    @Override
    public int forEachByteDesc(ByteBufProcessor processor) {
        return unsupported();
    }

    @Override
    public int forEachByteDesc(int index, int length, ByteBufProcessor processor) {
        return unsupported();
    }

    @Override
    public int nioBufferCount() {
        return unsupported();
    }

    @Override
    public ByteBuffer nioBuffer() {
        return unsupported();
    }

    @Override
    public ByteBuffer nioBuffer(int index, int length) {
        return unsupported();
    }

    @Override
    public ByteBuffer internalNioBuffer(int index, int length) {
        return unsupported();
    }

    @Override
    public ByteBuffer[] nioBuffers() {
        return unsupported();
    }

    @Override
    public ByteBuffer[] nioBuffers(int index, int length) {
        return unsupported();
    }

    @Override
    public boolean hasMemoryAddress() {
        return false;
    }

    @Override
    public long memoryAddress() {
        return unsupported();
    }

    @Override
    public int hashCode() {
        return 123 + buffer.hashCode();
    }

    @Override
    public boolean equals(Object obj) {
        return obj instanceof ReplayableByteBuf && buffer.equals(((ReplayableByteBuf) obj).buffer);
    }

    @Override
    public String toString() {
        return "Replayable" + buffer.toString();
    }

    @Override
    public ByteBuf retain(int increment) {
        return this;
    }

    @Override
    public ByteBuf retain() {
        return this;
    }

    @Override
    public int refCnt() {
        return 1;
    }

    @Override
    public boolean release() {
        return true;
    }

    @Override
    public boolean release(int decrement) {
        return true;
    }
}