<?php

/*
 * This file is part of SwiftMailer.
 * (c) 2004-2009 Chris Corbyn
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

/**
 * Logs to an Array backend.
 * @package Swift
 * @subpackage Transport
 * @author Chris Corbyn
 */
class Swift_Plugins_Loggers_ArrayLogger implements Swift_Plugins_Logger
{
  
  /**
   * The log contents.
   * @var array
   * @access private
   */
  private $_log = array();
  
  /**
   * Max size of the log.
   * @var int
   * @access private
   */
  private $_size = 0;
  
  /**
   * Create a new ArrayLogger with a maximum of $size entries.
   * @var int $size
   */
  public function __construct($size = 50)
  {
    $this->_size = $size;
  }
  
  /**
   * Add a log entry.
   * @param string $entry
   */
  public function add($entry)
  {
    $this->_log[] = $entry;
    while (count($this->_log) > $this->_size)
    {
      array_shift($this->_log);
    }
  }
  
  /**
   * Clear the log contents.
   */
  public function clear()
  {
    $this->_log = array();
  }
  
  /**
   * Get this log as a string.
   * @return string
   */
  public function dump()
  {
    return implode(PHP_EOL, $this->_log);
  }
  
}
