package org.djutils.decoderdumper;
   
   import java.io.IOException;
   
   /**
    * Decoder that returns a time stamp in milliseconds that applies to the time of dump of the first byte on the output line.
    * <p>
    * Copyright (c) 2013-2024 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
    * BSD-style license. See <a href="https://djutils.org/docs/current/djutils/licenses.html">DJUTILS License</a>.
   * </p>
   * @author <a href="https://www.tudelft.nl/averbraeck">Alexander Verbraeck</a>
   * @author <a href="https://www.tudelft.nl/staff/p.knoppers/">Peter Knoppers</a>
   */
  public class TimeStamper implements Decoder
  {
      /** Result of next call to getResult. */
      private String result = "";
  
      @Override
      public String getResult()
      {
          String retVal = this.result;
          this.result = "";
          return retVal;
      }
  
      @Override
      public int getMaximumWidth()
      {
          return 14;
      }
  
      @Override
      public boolean append(final int address, final byte theByte) throws IOException
      {
          if (this.result.length() == 0)
          {
              long now = System.currentTimeMillis();
              this.result = String.format("%10d.%03d ", now / 1000, now % 1000);
          }
          return false;
      }
  
      @Override
      public boolean ignoreForIdenticalOutputCheck()
      {
          return false;
      }
  
      @Override
      public String toString()
      {
          return "TimeStamper [result=" + this.result + "]";
      }
  
  }