DuplicatedByteBuf.java — netty Source File

Source Code

/*
 * Copyright 2012 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:
 *
 *   https://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 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;

/**
 * A derived buffer which simply forwards all data access requests to its
 * parent.  It is recommended to use {@link ByteBuf#duplicate()} instead
 * of calling the constructor explicitly.
 *
 * @deprecated Do not use.
 */
@Deprecated
public class DuplicatedByteBuf extends AbstractDerivedByteBuf {

    private final ByteBuf buffer;

    public DuplicatedByteBuf(ByteBuf buffer) {
        this(buffer, buffer.readerIndex(), buffer.writerIndex());
    }

    DuplicatedByteBuf(ByteBuf buffer, int readerIndex, int writerIndex) {
        super(buffer.maxCapacity());

        if (buffer instanceof DuplicatedByteBuf) {
            this.buffer = ((DuplicatedByteBuf) buffer).buffer;
        } else if (buffer instanceof AbstractPooledDerivedByteBuf) {
            this.buffer = buffer.unwrap();
        } else {
            this.buffer = buffer;
        }

        setIndex(readerIndex, writerIndex);
        markReaderIndex();
        markWriterIndex();
    }

// ... (351 more lines)