package org.lsst.ccs.plugin.jas3.console;
   
   import java.util.regex.Pattern;
   import org.lsst.ccs.bus.BusMessage;
   
   /**
    * Accepts or reject bus messages based on regular expressions applied to the
    * "toString" output of the message.
    *
   * @author tonyj
   */
  public class RegularExpressionMessageFilter implements MessageFilter {
  
      private Pattern veto;
      private Pattern accept;
  
      @Override
      public boolean accept(BusMessage message) {
          String str = message.toString();
          if (veto != null) {
              if (veto.matcher(str).find()) {
                  return false;
              }
          }
          if (accept != null) {
              return accept.matcher(str).find();
          }
          return true;
      }
  
      public Pattern getVeto() {
          return veto;
      }
  
      /**
       * If this pattern is found in the message it will be vetoed (not
       * displayed). The pattern is ignored if
       * <code>null</code>
       */
      public void setVeto(Pattern veto) {
          this.veto = veto;
      }
  
      public Pattern getAccept() {
          return accept;
      }
  
      /**
       * If the survives the veto, and this pattern pattern is found, it will be
       * displayed. The pattern is ignored if
       * <code>null</code>.
       */
      public void setAccept(Pattern accept) {
          this.accept = accept;
      }
  }