content: /*******************************************************************************
   * Copyright (c) 2009, 2019 Mountainminds GmbH & Co. KG and Contributors
   * All rights reserved. This program and the accompanying materials
   * are made available under the terms of the Eclipse Public License v1.0
   * which accompanies this distribution, and is available at
   * http://www.eclipse.org/legal/epl-v10.html
   *
   * Contributors:
   *    Marc R. Hoffmann - initial API and implementation
   *    
   *******************************************************************************/
  package org.jacoco.core.runtime;
  
  import java.io.IOException;
  import java.io.OutputStream;
  
  import org.jacoco.core.data.ExecutionDataWriter;
  
  /**
   * {@link ExecutionDataWriter} with commands added for runtime remote control.
   */
  public class RemoteControlWriter extends ExecutionDataWriter implements
  		IRemoteCommandVisitor {
  
  	/** Block identifier to confirm successful command execution. */
  	public static final byte BLOCK_CMDOK = 0x20;
  
  	/** Block identifier for dump command */
  	public static final byte BLOCK_CMDDUMP = 0x40;
  
  	/**
  	 * Creates a new writer based on the given output stream.
  	 * 
  	 * @param output
  	 *            stream to write commands to
  	 * @throws IOException
  	 *             if the header can't be written
  	 */
  	public RemoteControlWriter(final OutputStream output) throws IOException {
  		super(output);
  	}
  
  	/**
  	 * Sends a confirmation that a commands has been successfully executed and
  	 * the response is completed.
  	 * 
  	 * @throws IOException
  	 *             in case of problems with the remote connection
  	 */
  	public void sendCmdOk() throws IOException {
  		out.writeByte(RemoteControlWriter.BLOCK_CMDOK);
  	}
  
  	public void visitDumpCommand(final boolean dump, final boolean reset)
  			throws IOException {
  		out.writeByte(RemoteControlWriter.BLOCK_CMDDUMP);
  		out.writeBoolean(dump);
  		out.writeBoolean(reset);
  	}
  
  }
  