/*
 * 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:
 *
 *   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.handler.codec.marshalling;

import io.netty.buffer.ByteBuf;
import org.jboss.marshalling.ByteInput;

import java.io.IOException;

ByteInput implementation which reads its data from a ByteBuf
/** * {@link ByteInput} implementation which reads its data from a {@link ByteBuf} */
class ChannelBufferByteInput implements ByteInput { private final ByteBuf buffer; ChannelBufferByteInput(ByteBuf buffer) { this.buffer = buffer; } @Override public void close() throws IOException { // nothing to do } @Override public int available() throws IOException { return buffer.readableBytes(); } @Override public int read() throws IOException { if (buffer.isReadable()) { return buffer.readByte() & 0xff; } return -1; } @Override public int read(byte[] array) throws IOException { return read(array, 0, array.length); } @Override public int read(byte[] dst, int dstIndex, int length) throws IOException { int available = available(); if (available == 0) { return -1; } length = Math.min(available, length); buffer.readBytes(dst, dstIndex, length); return length; } @Override public long skip(long bytes) throws IOException { int readable = buffer.readableBytes(); if (readable < bytes) { bytes = readable; } buffer.readerIndex((int) (buffer.readerIndex() + bytes)); return bytes; } }