/*
 * Copyright 2013 The Netty Project
 *
 * The Netty Project 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 io.netty.buffer;

import io.netty.util.ByteProcessor;
import io.netty.util.internal.StringUtil;

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

Wraps another ByteBuf. It's important that the readerIndex() and writerIndex() will not do any adjustments on the indices on the fly because of internal optimizations made by ByteBufUtil.writeAscii(ByteBuf, CharSequence) and ByteBufUtil.writeUtf8(ByteBuf, CharSequence). /**
 * Wraps another {@link ByteBuf}.
 *
 * It's important that the {@link #readerIndex()} and {@link #writerIndex()} will not do any adjustments on the
 * indices on the fly because of internal optimizations made by {@link ByteBufUtil#writeAscii(ByteBuf, CharSequence)}
 * and {@link ByteBufUtil#writeUtf8(ByteBuf, CharSequence)}.
 */
class WrappedByteBuf extends ByteBuf {

    protected final ByteBuf buf;

    protected WrappedByteBuf(ByteBuf buf) {
        if (buf == null) {
            throw new NullPointerException("buf");
        }
        this.buf = buf;
    }

    @Override
    public final boolean hasMemoryAddress() {
        return buf.hasMemoryAddress();
    }

    @Override
    public final long memoryAddress() {
        return buf.memoryAddress();
    }

    @Override
    public final int capacity() {
        return buf.capacity();
    }

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

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

    @Override
    public final ByteBufAllocator alloc() {
        return buf.alloc();
    }

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

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

    @Override
    public final ByteBuf unwrap() {
        return buf;
    }

    @Override
    public ByteBuf asReadOnly() {
        return buf.asReadOnly();
    }

    @Override
    public boolean isReadOnly() {
        return buf.isReadOnly();
    }

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

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

    @Override
    public final ByteBuf readerIndex(int readerIndex) {
        buf.readerIndex(readerIndex);
        return this;
    }

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

    @Override
    public final ByteBuf writerIndex(int writerIndex) {
        buf.writerIndex(writerIndex);
        return this;
    }

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

    @Override
    public final int readableBytes() {
        return buf.readableBytes();
    }

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

    @Override
    public final int maxWritableBytes() {
        return buf.maxWritableBytes();
    }

    @Override
    public final boolean isReadable() {
        return buf.isReadable();
    }

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

    @Override
    public final ByteBuf clear() {
        buf.clear();
        return this;
    }

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

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

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

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

    @Override
    public ByteBuf discardReadBytes() {
        buf.discardReadBytes();
        return this;
    }

    @Override
    public ByteBuf discardSomeReadBytes() {
        buf.discardSomeReadBytes();
        return this;
    }

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

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

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

    @Override
    public byte getByte(int index) {
        return buf.getByte(index);
    }

    @Override
    public short getUnsignedByte(int index) {
        return buf.getUnsignedByte(index);
    }

    @Override
    public short getShort(int index) {
        return buf.getShort(index);
    }

    @Override
    public short getShortLE(int index) {
        return buf.getShortLE(index);
    }

    @Override
    public int getUnsignedShort(int index) {
        return buf.getUnsignedShort(index);
    }

    @Override
    public int getUnsignedShortLE(int index) {
        return buf.getUnsignedShortLE(index);
    }

    @Override
    public int getMedium(int index) {
        return buf.getMedium(index);
    }

    @Override
    public int getMediumLE(int index) {
        return buf.getMediumLE(index);
    }

    @Override
    public int getUnsignedMedium(int index) {
        return buf.getUnsignedMedium(index);
    }

    @Override
    public int getUnsignedMediumLE(int index) {
        return buf.getUnsignedMediumLE(index);
    }

    @Override
    public int getInt(int index) {
        return buf.getInt(index);
    }

    @Override
    public int getIntLE(int index) {
        return buf.getIntLE(index);
    }

    @Override
    public long getUnsignedInt(int index) {
        return buf.getUnsignedInt(index);
    }

    @Override
    public long getUnsignedIntLE(int index) {
        return buf.getUnsignedIntLE(index);
    }

    @Override
    public long getLong(int index) {
        return buf.getLong(index);
    }

    @Override
    public long getLongLE(int index) {
        return buf.getLongLE(index);
    }

    @Override
    public char getChar(int index) {
        return buf.getChar(index);
    }

    @Override
    public float getFloat(int index) {
        return buf.getFloat(index);
    }

    @Override
    public double getDouble(int index) {
        return buf.getDouble(index);
    }

    @Override
    public ByteBuf getBytes(int index, ByteBuf dst) {
        buf.getBytes(index, dst);
        return this;
    }

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

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

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

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

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

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

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

    @Override
    public int getBytes(int index, FileChannel out, long position, int length) throws IOException {
        return buf.getBytes(index, out, position, length);
    }

    @Override
    public CharSequence getCharSequence(int index, int length, Charset charset) {
        return buf.getCharSequence(index, length, charset);
    }

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

    @Override
    public ByteBuf setByte(int index, int value) {
        buf.setByte(index, value);
        return this;
    }

    @Override
    public ByteBuf setShort(int index, int value) {
        buf.setShort(index, value);
        return this;
    }

    @Override
    public ByteBuf setShortLE(int index, int value) {
        buf.setShortLE(index, value);
        return this;
    }

    @Override
    public ByteBuf setMedium(int index, int value) {
        buf.setMedium(index, value);
        return this;
    }

    @Override
    public ByteBuf setMediumLE(int index, int value) {
        buf.setMediumLE(index, value);
        return this;
    }

    @Override
    public ByteBuf setInt(int index, int value) {
        buf.setInt(index, value);
        return this;
    }

    @Override
    public ByteBuf setIntLE(int index, int value) {
        buf.setIntLE(index, value);
        return this;
    }

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

    @Override
    public ByteBuf setLongLE(int index, long value) {
        buf.setLongLE(index, value);
        return this;
    }

    @Override
    public ByteBuf setChar(int index, int value) {
        buf.setChar(index, value);
        return this;
    }

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

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

    @Override
    public ByteBuf setBytes(int index, ByteBuf src) {
        buf.setBytes(index, src);
        return this;
    }

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

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

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

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

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

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

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

    @Override
    public int setBytes(int index, FileChannel in, long position, int length) throws IOException {
        return buf.setBytes(index, in, position, length);
    }

    @Override
    public ByteBuf setZero(int index, int length) {
        buf.setZero(index, length);
        return this;
    }

    @Override
    public int setCharSequence(int index, CharSequence sequence, Charset charset) {
        return buf.setCharSequence(index, sequence, charset);
    }

    @Override
    public boolean readBoolean() {
        return buf.readBoolean();
    }

    @Override
    public byte readByte() {
        return buf.readByte();
    }

    @Override
    public short readUnsignedByte() {
        return buf.readUnsignedByte();
    }

    @Override
    public short readShort() {
        return buf.readShort();
    }

    @Override
    public short readShortLE() {
        return buf.readShortLE();
    }

    @Override
    public int readUnsignedShort() {
        return buf.readUnsignedShort();
    }

    @Override
    public int readUnsignedShortLE() {
        return buf.readUnsignedShortLE();
    }

    @Override
    public int readMedium() {
        return buf.readMedium();
    }

    @Override
    public int readMediumLE() {
        return buf.readMediumLE();
    }

    @Override
    public int readUnsignedMedium() {
        return buf.readUnsignedMedium();
    }

    @Override
    public int readUnsignedMediumLE() {
        return buf.readUnsignedMediumLE();
    }

    @Override
    public int readInt() {
        return buf.readInt();
    }

    @Override
    public int readIntLE() {
        return buf.readIntLE();
    }

    @Override
    public long readUnsignedInt() {
        return buf.readUnsignedInt();
    }

    @Override
    public long readUnsignedIntLE() {
        return buf.readUnsignedIntLE();
    }

    @Override
    public long readLong() {
        return buf.readLong();
    }

    @Override
    public long readLongLE() {
        return buf.readLongLE();
    }

    @Override
    public char readChar() {
        return buf.readChar();
    }

    @Override
    public float readFloat() {
        return buf.readFloat();
    }

    @Override
    public double readDouble() {
        return buf.readDouble();
    }

    @Override
    public ByteBuf readBytes(int length) {
        return buf.readBytes(length);
    }

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

    @Override
    public ByteBuf readRetainedSlice(int length) {
        return buf.readRetainedSlice(length);
    }

    @Override
    public ByteBuf readBytes(ByteBuf dst) {
        buf.readBytes(dst);
        return this;
    }

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

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

    @Override
    public ByteBuf readBytes(byte[] dst) {
        buf.readBytes(dst);
        return this;
    }

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

    @Override
    public ByteBuf readBytes(ByteBuffer dst) {
        buf.readBytes(dst);
        return this;
    }

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

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

    @Override
    public int readBytes(FileChannel out, long position, int length) throws IOException {
        return buf.readBytes(out, position, length);
    }

    @Override
    public CharSequence readCharSequence(int length, Charset charset) {
        return buf.readCharSequence(length, charset);
    }

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

    @Override
    public ByteBuf writeBoolean(boolean value) {
        buf.writeBoolean(value);
        return this;
    }

    @Override
    public ByteBuf writeByte(int value) {
        buf.writeByte(value);
        return this;
    }

    @Override
    public ByteBuf writeShort(int value) {
        buf.writeShort(value);
        return this;
    }

    @Override
    public ByteBuf writeShortLE(int value) {
        buf.writeShortLE(value);
        return this;
    }

    @Override
    public ByteBuf writeMedium(int value) {
        buf.writeMedium(value);
        return this;
    }

    @Override
    public ByteBuf writeMediumLE(int value) {
        buf.writeMediumLE(value);
        return this;
    }

    @Override
    public ByteBuf writeInt(int value) {
        buf.writeInt(value);
        return this;
    }

    @Override
    public ByteBuf writeIntLE(int value) {
        buf.writeIntLE(value);
        return this;
    }

    @Override
    public ByteBuf writeLong(long value) {
        buf.writeLong(value);
        return this;
    }

    @Override
    public ByteBuf writeLongLE(long value) {
        buf.writeLongLE(value);
        return this;
    }

    @Override
    public ByteBuf writeChar(int value) {
        buf.writeChar(value);
        return this;
    }

    @Override
    public ByteBuf writeFloat(float value) {
        buf.writeFloat(value);
        return this;
    }

    @Override
    public ByteBuf writeDouble(double value) {
        buf.writeDouble(value);
        return this;
    }

    @Override
    public ByteBuf writeBytes(ByteBuf src) {
        buf.writeBytes(src);
        return this;
    }

    @Override
    public ByteBuf writeBytes(ByteBuf src, int length) {
        buf.writeBytes(src, length);
        return this;
    }

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

    @Override
    public ByteBuf writeBytes(byte[] src) {
        buf.writeBytes(src);
        return this;
    }

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

    @Override
    public ByteBuf writeBytes(ByteBuffer src) {
        buf.writeBytes(src);
        return this;
    }

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

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

    @Override
    public int writeBytes(FileChannel in, long position, int length) throws IOException {
        return buf.writeBytes(in, position, length);
    }

    @Override
    public ByteBuf writeZero(int length) {
        buf.writeZero(length);
        return this;
    }

    @Override
    public int writeCharSequence(CharSequence sequence, Charset charset) {
        return buf.writeCharSequence(sequence, charset);
    }

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

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

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

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

    @Override
    public int forEachByte(ByteProcessor processor) {
        return buf.forEachByte(processor);
    }

    @Override
    public int forEachByte(int index, int length, ByteProcessor processor) {
        return buf.forEachByte(index, length, processor);
    }

    @Override
    public int forEachByteDesc(ByteProcessor processor) {
        return buf.forEachByteDesc(processor);
    }

    @Override
    public int forEachByteDesc(int index, int length, ByteProcessor processor) {
        return buf.forEachByteDesc(index, length, processor);
    }

    @Override
    public ByteBuf copy() {
        return buf.copy();
    }

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

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

    @Override
    public ByteBuf retainedSlice() {
        return buf.retainedSlice();
    }

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

    @Override
    public ByteBuf retainedSlice(int index, int length) {
        return buf.retainedSlice(index, length);
    }

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

    @Override
    public ByteBuf retainedDuplicate() {
        return buf.retainedDuplicate();
    }

    @Override
    public int nioBufferCount() {
        return buf.nioBufferCount();
    }

    @Override
    public ByteBuffer nioBuffer() {
        return buf.nioBuffer();
    }

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

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

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

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

    @Override
    public boolean hasArray() {
        return buf.hasArray();
    }

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

    @Override
    public int arrayOffset() {
        return buf.arrayOffset();
    }

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

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

    @Override
    public int hashCode() {
        return buf.hashCode();
    }

    @Override
    @SuppressWarnings("EqualsWhichDoesntCheckParameterClass")
    public boolean equals(Object obj) {
        return buf.equals(obj);
    }

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

    @Override
    public String toString() {
        return StringUtil.simpleClassName(this) + '(' + buf.toString() + ')';
    }

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

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

    @Override
    public ByteBuf touch() {
        buf.touch();
        return this;
    }

    @Override
    public ByteBuf touch(Object hint) {
        buf.touch(hint);
        return this;
    }

    @Override
    public final boolean isReadable(int size) {
        return buf.isReadable(size);
    }

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

    @Override
    public final int refCnt() {
        return buf.refCnt();
    }

    @Override
    public boolean release() {
        return buf.release();
    }

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