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//
// ========================================================================
// Copyright (c) 1995-2012 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.io.message;
import java.io.IOException;
import java.nio.ByteBuffer;
import org.eclipse.jetty.util.Utf8StringBuilder;
import org.eclipse.jetty.websocket.api.WebSocketPolicy;
import org.eclipse.jetty.websocket.driver.EventMethod;
import org.eclipse.jetty.websocket.io.WebSocketSession;
public class SimpleTextMessage implements MessageAppender
{
private final Object websocket;
private final EventMethod onEvent;
private final WebSocketSession session;
private final WebSocketPolicy policy;
private final Utf8StringBuilder utf;
private int size = 0;
private boolean finished;
public SimpleTextMessage(Object websocket, EventMethod onEvent, WebSocketSession session, WebSocketPolicy policy)
{
this.websocket = websocket;
this.onEvent = onEvent;
this.session = session;
this.policy = policy;
this.utf = new Utf8StringBuilder();
size = 0;
finished = false;
}
@Override
public void appendMessage(ByteBuffer payload) throws IOException
{
if (finished)
{
throw new IOException("Cannot append to finished buffer");
}
if (payload == null)
{
// empty payload is valid
return;
}
policy.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
this.onEvent.call(websocket,session,utf.toString());
}
}
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