<?php
  /**
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements. See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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 log4php
   */
  
  /**
   * Returns the name of the logger which created the logging request.
   * 
   * Takes one option, which is an integer. If the option is given, the logger 
   * name will be shortened to the given length, if possible.
   * 
   * @package log4php
   * @subpackage pattern
   * @version $Revision: 1326626 $
   * @since 2.3
   */
  class LoggerPatternConverterLogger extends LoggerPatternConverter {
  
  	/** Length to which to shorten the name. */
  	private $length;
  	
  	/** Holds processed logger names. */
  	private $cache = array();
  	
  	public function activateOptions() {
  		// Parse the option (desired output length)
  		if (isset($this->option) && is_numeric($this->option) && $this->option >= 0) {
  			$this->length = (integer) $this->option;
  		}
  	}
  	
  	public function convert(LoggerLoggingEvent $event) {
  		$name = $event->getLoggerName();
  		
  		if (!isset($this->cache[$name])) {
  
  			// If length is set return shortened logger name 
  			if (isset($this->length)) {
  				$this->cache[$name] = LoggerUtils::shortenClassName($name, $this->length);
  			} 
  			
  			// If no length is specified return full logger name
  			else {
  				$this->cache[$name] = $name;
  			}
  		} 
  		
  		return $this->cache[$name];
  	}
  }