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//
// ========================================================================
// Copyright (c) 1995-2013 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.spdy.api;
import java.nio.ByteBuffer;
import java.util.concurrent.TimeUnit;
/**
* <p>Specialized {@link DataInfo} for {@link ByteBuffer} content.</p>
*/
public class ByteBufferDataInfo extends DataInfo
{
private final ByteBuffer buffer;
private final int length;
public ByteBufferDataInfo(ByteBuffer buffer, boolean close)
{
this(0, TimeUnit.SECONDS, buffer, close);
}
public ByteBufferDataInfo(long timeout, TimeUnit unit, ByteBuffer buffer, boolean close)
{
super(timeout, unit, close);
this.buffer = buffer;
this.length = buffer.remaining();
}
@Override
public int length()
{
return length;
}
@Override
public int available()
{
return buffer.remaining();
}
@Override
public int readInto(ByteBuffer output)
{
int space = output.remaining();
if (available() > space)
{
int limit = buffer.limit();
buffer.limit(buffer.position() + space);
output.put(buffer);
buffer.limit(limit);
}
else
{
space = buffer.remaining();
output.put(buffer);
}
return space;
}
@Override
public int readInto(byte[] bytes, int offset, int length)
{
int available = available();
if (available < length)
length = available;
buffer.get(bytes, offset, length);
return length;
}
@Override
protected ByteBuffer allocate(int size)
{
return buffer.isDirect() ? ByteBuffer.allocateDirect(size) : super.allocate(size);
}
}
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