implements org.apache.log4j.xml.UnrecognizedElementHandler {
    /**
     * Namespace for XSLT.
     */
    private static final String XSLT_NS = "http://www.w3.org/1999/XSL/Transform";
    /**
     * Namespace for log4j events.
     */
    private static final String LOG4J_NS = "http://jakarta.apache.org/log4j/";
    /**
     * Whether location information should be written.
     */
    private boolean locationInfo = false;
    /**
     * media-type (mime type) extracted from XSLT transform.
     */
    private String mediaType = "text/plain";
    /**
     * Encoding extracted from XSLT transform.
     */
    private Charset encoding;
    /**
     * Transformer factory.
     */
    private SAXTransformerFactory transformerFactory;
    /**
     * XSLT templates.
     */
    private Templates templates;
    /**
     * Output stream.
     */
    private final ByteArrayOutputStream outputStream;
    /**
     * Whether throwable information should be ignored.
     */
    private boolean ignoresThrowable = false;
    /**
     * Whether properties should be extracted.
     */
    private boolean properties = true;
    /**
     * Whether activateOptions has been called.
     */
    private boolean activated = false;

    /**
     * DateFormat for UTC time.
     */
    private final CachedDateFormat utcDateFormat;

    /**
     * Default constructor.
     *
     */
    public XSLTLayout() {
        outputStream = new ByteArrayOutputStream();
        transformerFactory = (SAXTransformerFactory)
                TransformerFactory.newInstance();

        SimpleDateFormat zdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");
        zdf.setTimeZone(TimeZone.getTimeZone("UTC"));
        utcDateFormat = new CachedDateFormat(zdf, 1000);
    }

    /**
     * {@inheritDoc}
     */
    public synchronized String getContentType() {
        return mediaType;
    }

    /**
     * The <b>LocationInfo </b> option takes a boolean value. By default, it is
     * set to false which means there will be no location information output by
     * this layout. If the the option is set to true, then the file name and line
     * number of the statement at the origin of the log statement will be output.
     *
     * <p>
     * If you are embedding this layout within an {@link
     * org.apache.log4j.net.SMTPAppender} then make sure to set the
     * <b>LocationInfo </b> option of that appender as well.
     *
     * @param flag new value.
     */
    public synchronized void setLocationInfo(final boolean flag) {
      locationInfo = flag;
    }

    /**
     * Gets whether location info should be output.
     * @return if location is output.
     */
    public synchronized boolean getLocationInfo() {
      return locationInfo;
    }

    /**
     * Sets whether MDC key-value pairs should be output, default false.
     * @param flag new value.
     */
    public synchronized void setProperties(final boolean flag) {
      properties = flag;
    }

    /**
     * Gets whether MDC key-value pairs should be output.
     * @return true if MDC key-value pairs are output.
     */
    public synchronized boolean getProperties() {
      return properties;
    }


    /** {@inheritDoc} */
    public synchronized void activateOptions() {
        if (templates == null) {
            try {
                InputStream is = XSLTLayout.class.getResourceAsStream("default.xslt");
                StreamSource ss = new StreamSource(is);
                templates = transformerFactory.newTemplates(ss);
                encoding = Charset.forName("US-ASCII");
                mediaType = "text/plain";
            } catch (Exception ex) {
                LogLog.error("Error loading default.xslt", ex);
            }
        }
        activated = true;
    }

    /**
     * Gets whether throwables should not be output.
     * @return true if throwables should not be output.
     */
    public synchronized boolean ignoresThrowable() {
        return ignoresThrowable;
    }

    /**
     * Sets whether throwables should not be output.
     * @param ignoresThrowable if true, throwables should not be output.
    */
    public synchronized void setIgnoresThrowable(boolean ignoresThrowable) {
      this.ignoresThrowable = ignoresThrowable;
    }



    /**
     * {@inheritDoc}
     */
    public synchronized String format(final LoggingEvent event) {
      if (!activated) {
          activateOptions();
      }
      if (templates != null && encoding != null) {
          outputStream.reset();

          try {
            TransformerHandler transformer =
                      transformerFactory.newTransformerHandler(templates);

            transformer.setResult(new StreamResult(outputStream));
            transformer.startDocument();

            //
            //   event element
            //
            AttributesImpl attrs = new AttributesImpl();
            attrs.addAttribute(null, "logger", "logger",
                    "CDATA", event.getLoggerName());
            attrs.addAttribute(null, "timestamp", "timestamp",
                    "CDATA", Long.toString(event.timeStamp));
            attrs.addAttribute(null, "level", "level",
                    "CDATA", event.getLevel().toString());
            attrs.addAttribute(null, "thread", "thread",
                    "CDATA", event.getThreadName());
            StringBuffer buf = new StringBuffer();
            utcDateFormat.format(event.timeStamp, buf);
            attrs.addAttribute(null, "time", "time", "CDATA", buf.toString());


            transformer.startElement(LOG4J_NS, "event", "event", attrs);
            attrs.clear();

            //
            //   message element
            //
            transformer.startElement(LOG4J_NS, "message", "message", attrs);
            String msg = event.getRenderedMessage();
            if (msg != null && msg.length() > 0) {
                transformer.characters(msg.toCharArray(), 0, msg.length());
            }
            transformer.endElement(LOG4J_NS, "message", "message");

            //
            //    NDC element
            //
            String ndc = event.getNDC();
            if (ndc != null) {
                transformer.startElement(LOG4J_NS, "NDC", "NDC", attrs);
                char[] ndcChars = ndc.toCharArray();
                transformer.characters(ndcChars, 0, ndcChars.length);
                transformer.endElement(LOG4J_NS, "NDC", "NDC");
            }

            //
            //    throwable element unless suppressed
            //
              if (!ignoresThrowable) {
                String[] s = event.getThrowableStrRep();
                if (s != null) {
                    transformer.startElement(LOG4J_NS, "throwable",
                            "throwable", attrs);
                    char[] nl = new char[] { '\n' };
                    for (int i = 0; i < s.length; i++) {
                        char[] line = s[i].toCharArray();
                        transformer.characters(line, 0, line.length);
                        transformer.characters(nl, 0, nl.length);
                    }
                    transformer.endElement(LOG4J_NS, "throwable", "throwable");
                }
              }

              //
              //     location info unless suppressed
              //
              //
              if (locationInfo) {
                LocationInfo locationInfo = event.getLocationInformation();
                attrs.addAttribute(null, "class", "class", "CDATA",
                        locationInfo.getClassName());
                attrs.addAttribute(null, "method", "method", "CDATA",
                          locationInfo.getMethodName());
                attrs.addAttribute(null, "file", "file", "CDATA",
                            locationInfo.getFileName());
                attrs.addAttribute(null, "line", "line", "CDATA",
                            locationInfo.getLineNumber());
                transformer.startElement(LOG4J_NS, "locationInfo",
                        "locationInfo", attrs);
                transformer.endElement(LOG4J_NS, "locationInfo",
                        "locationInfo");
              }

              if (properties) {
                //
                //    write MDC contents out as properties element
                //
                Set mdcKeySet = MDCKeySetExtractor.INSTANCE.getPropertyKeySet(event);

                if ((mdcKeySet != null) && (mdcKeySet.size() > 0)) {
                    attrs.clear();
                    transformer.startElement(LOG4J_NS,
                            "properties", "properties", attrs);
                    Object[] keys = mdcKeySet.toArray();
                    Arrays.sort(keys);
                    for (int i = 0; i < keys.length; i++) {
                        String key = keys[i].toString();
                        Object val = event.getMDC(key);
                        attrs.clear();
                        attrs.addAttribute(null, "name", "name", "CDATA", key);
                        attrs.addAttribute(null, "value", "value",
                                "CDATA", val.toString());
                        transformer.startElement(LOG4J_NS,
                                "data", "data", attrs);
                        transformer.endElement(LOG4J_NS, "data", "data");
                    }
                }
              }


            transformer.endElement(LOG4J_NS, "event", "event");
            transformer.endDocument();

            String body = encoding.decode(
                    ByteBuffer.wrap(outputStream.toByteArray())).toString();
            outputStream.reset();
            //
            //   must remove XML declaration since it may
            //      result in erroneous encoding info
            //      if written by FileAppender in a different encoding
            if (body.startsWith("<?xml ")) {
                int endDecl = body.indexOf("?>");
                if (endDecl != -1) {
                    for(endDecl += 2; 
					     endDecl < body.length() &&
						 (body.charAt(endDecl) == '\n' || body.charAt(endDecl) == '\r'); 
						 endDecl++);
                    return body.substring(endDecl);
                }
            }
            return body;
          } catch (Exception ex) {
              LogLog.error("Error during transformation", ex);
              return ex.toString();
          }
      }
      return "No valid transform or encoding specified.";
    }

    /**
     * Sets XSLT transform.
     * @param xsltdoc DOM document containing XSLT transform source,
     * may be modified.
     * @throws TransformerConfigurationException if transformer can not be
     * created.
     */
    public void setTransform(final Document xsltdoc)
            throws TransformerConfigurationException {
        //
        //  scan transform source for xsl:output elements
        //    and extract encoding, media (mime) type and output method
        //
        String encodingName = null;
        mediaType = null;
        String method = null;
        NodeList nodes = xsltdoc.getElementsByTagNameNS(
                XSLT_NS,
                "output");
        for(int i = 0; i < nodes.getLength(); i++) {
            Element outputElement = (Element) nodes.item(i);
            if (method == null || method.length() == 0) {
                method = outputElement.getAttributeNS(null, "method");
            }
            if (encodingName == null || encodingName.length() == 0) {
                encodingName = outputElement.getAttributeNS(null, "encoding");
            }
            if (mediaType == null || mediaType.length() == 0) {
                mediaType = outputElement.getAttributeNS(null, "media-type");
            }
        }

        if (mediaType == null || mediaType.length() == 0) {
            if ("html".equals(method)) {
                mediaType = "text/html";
            } else if ("xml".equals(method)) {
                mediaType = "text/xml";
            } else {
                mediaType = "text/plain";
            }
        }

        //
        //  if encoding was not specified,
        //     add xsl:output encoding=US-ASCII to XSLT source
        //
        if (encodingName == null || encodingName.length() == 0) {
            Element transformElement = xsltdoc.getDocumentElement();
            Element outputElement = xsltdoc.
                    createElementNS(XSLT_NS, "output");
            outputElement.setAttributeNS(null, "encoding", "US-ASCII");
            transformElement.insertBefore(outputElement, transformElement.getFirstChild());
            encoding = Charset.forName("US-ASCII");
        } else {
            encoding = Charset.forName(encodingName);
        }

        DOMSource transformSource = new DOMSource(xsltdoc);
        
        templates = transformerFactory.newTemplates(transformSource);

    }

    /**
     * {@inheritDoc}
     */
    public boolean parseUnrecognizedElement(final Element element,
                                            final Properties props)
            throws Exception {
        if (XSLT_NS.equals(element.getNamespaceURI()) ||
                element.getNodeName().indexOf("transform") != -1 ||
                element.getNodeName().indexOf("stylesheet") != -1) {
            //
            //   DOMConfigurator typically not namespace aware
            //     serialize tree and reparse.
            ByteArrayOutputStream os = new ByteArrayOutputStream();
            DOMSource source = new DOMSource(element);
            TransformerFactory transformerFactory = TransformerFactory.newInstance();
            Transformer transformer = transformerFactory.newTransformer();
            transformer.transform(source, new StreamResult(os));

            ByteArrayInputStream is = new ByteArrayInputStream(os.toByteArray());
            DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
            domFactory.setNamespaceAware(true);
            Document xsltdoc = domFactory.newDocumentBuilder().parse(is);
            setTransform(xsltdoc);
            return true;
        }
        return false;
    }


}

    public static final int CONFIG_INT = 14000;
    /**
     * Numerical value for FINE.
     */
    public static final int FINE_INT = 13000;
    /**
     * Numerical value for FINER.
     */
    public static final int FINER_INT = 12000;
    /**
     * Numerical value for FINEST.
     */
    public static final int FINEST_INT = 11000;
    /**
     * Numerical value for UNKNOWN.
     */
    public static final int UNKNOWN_INT = 10000;

    /**
     * SEVERE.
     */
    public static final UtilLoggingLevel SEVERE =
            new UtilLoggingLevel(SEVERE_INT, "SEVERE", 0);
    /**
     * WARNING.
     */
    public static final UtilLoggingLevel WARNING =
            new UtilLoggingLevel(WARNING_INT, "WARNING", 4);
    /**
     * INFO.
     */
    public static final UtilLoggingLevel INFO =
            new UtilLoggingLevel(INFO_INT, "INFO", 5);
    /**
     * CONFIG.
     */
    public static final UtilLoggingLevel CONFIG =
            new UtilLoggingLevel(CONFIG_INT, "CONFIG", 6);
    /**
     * FINE.
     */
    public static final UtilLoggingLevel FINE =
            new UtilLoggingLevel(FINE_INT, "FINE", 7);
    /**
     * FINER.
     */
    public static final UtilLoggingLevel FINER =
            new UtilLoggingLevel(FINER_INT, "FINER", 8);
    /**
     * FINEST.
     */
    public static final UtilLoggingLevel FINEST =
            new UtilLoggingLevel(FINEST_INT, "FINEST", 9);

    /**
     * Create new instance.
     * @param level numeric value for level.
     * @param levelStr symbolic name for level.
     * @param syslogEquivalent Equivalent syslog severity.
     */
    protected UtilLoggingLevel(final int level,
                               final String levelStr,
                               final int syslogEquivalent) {
        super(level, levelStr, syslogEquivalent);
    }

    /**
     * Convert an integer passed as argument to a level. If the
     * conversion fails, then this method returns the specified default.
     * @param val numeric value.
     * @param defaultLevel level to be returned if no level matches
     * numeric value.
     * @return matching level or default level.
     */
    public static UtilLoggingLevel toLevel(final int val,
                               final UtilLoggingLevel defaultLevel) {
        switch (val) {
            case SEVERE_INT:
                return SEVERE;

            case WARNING_INT:
                return WARNING;

            case INFO_INT:
                return INFO;

            case CONFIG_INT:
                return CONFIG;

            case FINE_INT:
                return FINE;

            case FINER_INT:
                return FINER;

            case FINEST_INT:
                return FINEST;

            default:
                return defaultLevel;
        }
    }

    /**
     * Gets level matching numeric value.
     * @param val numeric value.
     * @return  matching level or UtilLoggerLevel.FINEST if no match.
     */
    public static Level toLevel(final int val) {
        return toLevel(val, FINEST);
    }

    /**
     * Gets list of supported levels.
     * @return  list of supported levels.
     */
    public static List getAllPossibleLevels() {
        ArrayList list = new ArrayList();
        list.add(FINE);
        list.add(FINER);
        list.add(FINEST);
        list.add(INFO);
        list.add(CONFIG);
        list.add(WARNING);
        list.add(SEVERE);
        return list;
    }

    /**
     * Get level with specified symbolic name.
     * @param s symbolic name.
     * @return matching level or Level.DEBUG if no match.
     */
    public static Level toLevel(final String s) {
        return toLevel(s, Level.DEBUG);
    }


    /**
     * Get level with specified symbolic name.
     * @param sArg symbolic name.
     * @param defaultLevel level to return if no match.
     * @return matching level or defaultLevel if no match.
     */
    public static Level toLevel(final String sArg,
                                final Level defaultLevel) {
        if (sArg == null) {
            return defaultLevel;
        }

        String s = sArg.toUpperCase();

        if (s.equals("SEVERE")) {
            return SEVERE;
        }

        //if(s.equals("FINE")) return Level.FINE;
        if (s.equals("WARNING")) {
            return WARNING;
        }

        if (s.equals("INFO")) {
            return INFO;
        }

        if (s.equals("CONFI")) {
            return CONFIG;
        }

        if (s.equals("FINE")) {
            return FINE;
        }

        if (s.equals("FINER")) {
            return FINER;
        }

        if (s.equals("FINEST")) {
            return FINEST;
        }
        return defaultLevel;
    }

}

      InputSource inputSource =
        new InputSource(new StringReader(buf.toString()));
      document = docBuilder.parse(inputSource);
    } catch (Exception e) {
      e.printStackTrace();
    }

    return document;
  }

  /**
   * Decodes a File into a Vector of LoggingEvents.
   * @param url the url of a file containing events to decode
   * @return Vector of LoggingEvents
   * @throws IOException if IO error during processing.
   */
  public Vector decode(final URL url) throws IOException {
    LineNumberReader reader;
    boolean isZipFile = url.getPath().toLowerCase().endsWith(".zip");
    InputStream inputStream;
    if (isZipFile) {
        inputStream = new ZipInputStream(url.openStream());
        //move stream to next entry so we can read it
        ((ZipInputStream)inputStream).getNextEntry();
    } else {
        inputStream = url.openStream();
    }
    if (owner != null) {
        reader = new LineNumberReader(
                new InputStreamReader(
                        new ProgressMonitorInputStream(owner,
                                "Loading " + url , inputStream), ENCODING));
    } else {
        reader = new LineNumberReader(new InputStreamReader(inputStream, ENCODING));
    }
    Vector v = new Vector();

      String line;
      Vector events;
      try {
          while ((line = reader.readLine()) != null) {
              StringBuffer buffer = new StringBuffer(line);
              for (int i = 0; i < 1000; i++) {
                  buffer.append(reader.readLine()).append("\n");
              }
              events = decodeEvents(buffer.toString());
              if (events != null) {
                  v.addAll(events);
              }
          }
    } finally {
      partialEvent = null;
      try {
        if (reader != null) {
          reader.close();
        }
      } catch (Exception e) {
        e.printStackTrace();
      }
    }
    return v;
  }

  /**
   * Decodes a String representing a number of events into a
   * Vector of LoggingEvents.
   * @param document to decode events from
   * @return Vector of LoggingEvents
   */
  public Vector decodeEvents(final String document) {

      if (document != null) {

          if (document.trim().equals("")) {
              return null;
          }

          String newDoc;

          String newPartialEvent = null;
          //separate the string into the last portion ending with </record>
          // (which will be processed) and the partial event which
          // will be combined and processed in the next section

          //if the document does not contain a record end,
          // append it to the partial event string
          if (document.lastIndexOf(RECORD_END) == -1) {
              partialEvent = partialEvent + document;
              return null;
          }

          if (document.lastIndexOf(RECORD_END) + RECORD_END.length()
                  < document.length()) {
              newDoc = document.substring(0,
                      document.lastIndexOf(RECORD_END) + RECORD_END.length());
              newPartialEvent = document.substring(
                      document.lastIndexOf(RECORD_END) + RECORD_END.length());
          } else {
              newDoc = document;
          }
          if (partialEvent != null) {
              newDoc = partialEvent + newDoc;
          }
          partialEvent = newPartialEvent;

          Document doc = parse(newDoc);
          if (doc == null) {
              return null;
          }
          return decodeEvents(doc);
      }
      return null;
  }

    /**
      * Converts the string data into an XML Document, and then soaks out the
      * relevant bits to form a new LoggingEvent instance which can be used
      * by any Log4j element locally.
      * @param data XML fragment
      * @return a single LoggingEvent or null
      */
  public LoggingEvent decode(final String data) {
    Document document = parse(data);

    if (document == null) {
      return null;
    }

    Vector events = decodeEvents(document);

    if (events.size() > 0) {
      return (LoggingEvent) events.firstElement();
    }

    return null;
  }

  /**
   * Given a Document, converts the XML into a Vector of LoggingEvents.
   * @param document XML document
   * @return Vector of LoggingEvents
   */
  private Vector decodeEvents(final Document document) {
    Vector events = new Vector();

        if (result) {
            for (Iterator iter = tempMatches1.entrySet().iterator();iter.hasNext();) {
                Map.Entry entry = (Map.Entry)iter.next();
                Object key = entry.getKey();
                Set value = (Set)entry.getValue();
                Set mainSet = (Set) matches.get(key);
                if (mainSet == null) {
                    mainSet = new HashSet();
                    matches.put(key, mainSet);
                }
                mainSet.addAll(value);
            }
            for (Iterator iter = tempMatches2.entrySet().iterator();iter.hasNext();) {
                Map.Entry entry = (Map.Entry)iter.next();
                Object key = entry.getKey();
                Set value = (Set)entry.getValue();
                Set mainSet = (Set) matches.get(key);
                if (mainSet == null) {
                    mainSet = new HashSet();
                    matches.put(key, mainSet);
                }
                mainSet.addAll(value);
            }
        }
        return result;
  }
}

    private LevelEqualsRule(final Level level) {
        super();
        this.level = level;
    }

    /**
     * Populate list of levels.
     */
    private static void populateLevels() {
        levelList = new LinkedList();

        levelList.add(Level.FATAL.toString());
        levelList.add(Level.ERROR.toString());
        levelList.add(Level.WARN.toString());
        levelList.add(Level.INFO.toString());
        levelList.add(Level.DEBUG.toString());
		Level trace = Level.toLevel(5000, null);
		if (trace != null) {
			levelList.add(trace.toString());
	    }
    }

    /**
     * Create new rule.
     * @param value name of level.
     * @return instance of LevelEqualsRule.
     */
    public static Rule getRule(final String value) {
        Level thisLevel;
        if (levelList.contains(value.toUpperCase())) {
            thisLevel = Level.toLevel(value.toUpperCase());
          } else {
            thisLevel = UtilLoggingLevel.toLevel(value.toUpperCase());
        }

        return new LevelEqualsRule(thisLevel);

        boolean result = (level.toInt() == eventLevel.toInt());
        if (result && matches != null) {
            Set entries = (Set) matches.get(LoggingEventFieldResolver.LEVEL_FIELD);
            if (entries == null) {
                entries = new HashSet();
                matches.put(LoggingEventFieldResolver.LEVEL_FIELD, entries);
            }
            entries.add(eventLevel);
        }
        return result;
    }

    /**
     * Deserialize the state of the object.
     *
     * @param in object input stream.
     *
     * @throws IOException if error in reading stream for deserialization.
     */
    private void readObject(final java.io.ObjectInputStream in)
            throws IOException {
        populateLevels();
        boolean isUtilLogging = in.readBoolean();
        int levelInt = in.readInt();
        if (isUtilLogging) {
            level = UtilLoggingLevel.toLevel(levelInt);
        } else {
            level = Level.toLevel(levelInt);
        }
    }

    /**
     * Serialize the state of the object.
     *
     * @param out object output stream.
     *
     * @throws IOException if error in writing stream during serialization.
     */
    private void writeObject(final java.io.ObjectOutputStream out)
            throws IOException {
        out.writeBoolean(level instanceof UtilLoggingLevel);
        out.writeInt(level.toInt());
    }
}

public final class SoundAppender extends AppenderSkeleton {

	private AudioClip clip;
	private String audioURL;

	public SoundAppender() {
	}

	/**
	 * Attempt to initialize the appender by creating a reference to an AudioClip.
	 * 
	 * Will log a message if format is not supported, file not found, etc.
	 * 
	 */
	public void activateOptions() {
		/*
		 * AudioSystem.getAudioInputStream requires jdk 1.3,
		 * so we use applet.newaudioclip instead
		 *
		 */
		try {
			clip = Applet.newAudioClip(new URL(audioURL));
		} catch (MalformedURLException mue) {
            LogLog.error("unable to initialize SoundAppender", mue);}
		if (clip == null) {
		      LogLog.error("Unable to initialize SoundAppender");
		}
	}

	/**
	 * Accessor
	 * 
	 * @return audio file
	 */
	public String getAudioURL() {
		return audioURL;
	}

	/**
	 * Mutator - common format for a file-based url:
	 * file:///c:/path/someaudioclip.wav
	 * 
	 * @param audioURL
	 */
	public void setAudioURL(String audioURL) {
		this.audioURL = audioURL;
	}

	/**
	 * Play the sound if an event is being processed
	 */
	protected void append(LoggingEvent event) {
		if (clip != null) {
			clip.play();
		}
	}

	public void close() {
		//nothing to do
	}

    /**
     * Gets whether appender requires a layout.
     * @return false
     */
  public boolean requiresLayout() {
      return false;
  }

}

  public GZCompressAction(
    final File source, final File destination, final boolean deleteSource) {
    if (source == null) {
      throw new NullPointerException("source");
    }

    if (destination == null) {
      throw new NullPointerException("destination");
    }

    this.source = source;
    this.destination = destination;
    this.deleteSource = deleteSource;
  }

  /**
   * Compress.
   * @return true if successfully compressed.
   * @throws IOException on IO exception.
   */
  public boolean execute() throws IOException {
    return execute(source, destination, deleteSource);
  }

  /**
   * Compress a file.
   *
   * @param source file to compress, may not be null.
   * @param destination compressed file, may not be null.
   * @param deleteSource if true, attempt to delete file on completion.  Failure to delete
   * does not cause an exception to be thrown or affect return value.
   * @return true if source file compressed.
   * @throws IOException on IO exception.
   */
  public static boolean execute(
    final File source, final File destination, final boolean deleteSource)
          throws IOException {
    if (source.exists()) {
      FileInputStream fis = new FileInputStream(source);
      FileOutputStream fos = new FileOutputStream(destination);

     super(false);
  }

  /**
     Open the multicast sender for the <b>RemoteHost</b> and <b>Port</b>.
  */
  public void activateOptions() {
    try {
      hostname = InetAddress.getLocalHost().getHostName();
    } catch (UnknownHostException uhe) {
      try {
        hostname = InetAddress.getLocalHost().getHostAddress();
      } catch (UnknownHostException uhe2) {
        hostname = "unknown";
      }
    }

    //allow system property of application to be primary
    if (application == null) {
      application = System.getProperty(Constants.APPLICATION_KEY);
    } else {
      if (System.getProperty(Constants.APPLICATION_KEY) != null) {
        application = application + "-" + System.getProperty(Constants.APPLICATION_KEY);
      }
    }

    if(remoteHost != null) {
      address = getAddressByName(remoteHost);

          NodeList propertyList = list.item(y).getChildNodes();
          int propertyLength = propertyList.getLength();

          for (int i = 0; i < propertyLength; i++) {
            String propertyTag = propertyList.item(i).getNodeName();

            if (propertyTag.equalsIgnoreCase("log4j:data")) {
              Node property = propertyList.item(i);
              String name =
                property.getAttributes().getNamedItem("name").getNodeValue();
              String value =
                property.getAttributes().getNamedItem("value").getNodeValue();
              properties.put(name, value);
            }
          }
        }

        if (tagName.equalsIgnoreCase("log4j:throwable")) {

              closeWriter();

              boolean success = true;

              if (rollover.getSynchronous() != null) {
                success = false;

                try {
                  success = rollover.getSynchronous().execute();
                } catch (Exception ex) {
                  exception = ex;
                }
              }

              if (success) {
                if (rollover.getAppend()) {
                  fileLength = new File(rollover.getActiveFileName()).length();
                } else {
                  fileLength = 0;
                }

                if (rollover.getAsynchronous() != null) {
                  lastRolloverAsyncAction = rollover.getAsynchronous();
                  new Thread(lastRolloverAsyncAction).start();
                }

            }
        }

      LocationInfo info;
      if ((fileName != null)
              || (className != null)
              || (methodName != null)
              || (lineNumber != null)) {
          info = new LocationInfo(fileName, className, methodName, lineNumber);
      } else {
        info = LocationInfo.NA_LOCATION_INFO;
      }

        ThrowableInformation throwableInfo = null;
        if (exception != null) {
            throwableInfo = new ThrowableInformation(exception);
        }

        LoggingEvent loggingEvent = new LoggingEvent(null,
                logger, timeStamp, level, message,
                threadName,
                throwableInfo,
                ndc,
                info,
                properties);

      events.add(loggingEvent);