//
// ========================================================================
// Copyright (c) 1995-2014 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.websocket.common.message;
import java.io.IOException;
import java.nio.ByteBuffer;
import org.eclipse.jetty.util.Utf8StringBuilder;
import org.eclipse.jetty.websocket.common.events.EventDriver;
public class SimpleTextMessage implements MessageAppender
{
private final EventDriver onEvent;
protected final Utf8StringBuilder utf;
private int size = 0;
protected boolean finished;
public SimpleTextMessage(EventDriver onEvent)
{
this.onEvent = onEvent;
this.utf = new Utf8StringBuilder(1024);
size = 0;
finished = false;
}
@Override
public void appendFrame(ByteBuffer payload, boolean isLast) throws IOException
{
if (finished)
{
throw new IOException("Cannot append to finished buffer");
}
if (payload == null)
{
// empty payload is valid
return;
}
onEvent.getPolicy().assertValidTextMessageSize(size + payload.remaining());
size += payload.remaining();
// allow for fast fail of BAD utf (incomplete utf will trigger on messageComplete)
this.utf.append(payload);
}
@Override
public void messageComplete()
{
finished = true;
// notify event
onEvent.onTextMessage(utf.toString());
}
}