The version of Apache log4j used by SoundHelix.

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PRE_UGLI_MOVE :: src / java / org / apache / log4j / pattern /

RelativeTimePatternConverter.java

/*
 * Copyright 1999,2004 The Apache Software Foundation.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.log4j.pattern;

import org.apache.log4j.spi.LoggingEvent;

/*
 * Return the relative time in milliseconds since loading of the LoggingEvent 
 * class.
 * 
 * @author Ceki Gülcü
 */
public class RelativeTimePatternConverter extends PatternConverter {
	
	// We assume that each PatternConveter instance is unique within a layout, 
	// which is unique within an appender. We further assume that callas to the 
	// appender method are serialized (per appender).
  StringBuffer buf;
  long lastTimestamp = 0;
  
  
  public RelativeTimePatternConverter() {
    super();
    this.buf = new StringBuffer(9);
  }

  public StringBuffer convert(LoggingEvent event) {
    long timestamp = event.getTimeStamp();
    // if called multiple times within the same milliseconds
    // return old value
    if(timestamp == lastTimestamp) {
      return buf;
    } else {
      buf.setLength(0);
      lastTimestamp = timestamp;
      buf.append(Long.toString(timestamp - LoggingEvent.getStartTime()));
    }
    return buf;
  }
  
  public String getName() {
      return "Time";
  }
  
  public String getStyleClass(LoggingEvent e) {
    return "time";
  }
  
}
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