io.netty.handler.codec.marshalling.ChannelBufferByteInput Maven / Gradle / Ivy
/*
* 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;
/**
* {@link ByteInput} implementation which reads its data from a {@link ByteBuf}
*/
class ChannelBufferByteInput implements ByteInput {
private final ByteBuf buffer;
public 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;
}
}