/classes/log/AbstractLogger.php

<?php
/*
* 2007-2012 PrestaShop
*
* NOTICE OF LICENSE
*
* This source file is subject to the Open Software License (OSL 3.0)
* that is bundled with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/osl-3.0.php
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@prestashop.com so we can send you a copy immediately.
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
* versions in the future. If you wish to customize PrestaShop for your
* needs please refer to http://www.prestashop.com for more information.
*
*  @author PrestaShop SA <contact@prestashop.com>
*  @copyright  2007-2012 PrestaShop SA
*  @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/

abstract class AbstractLoggerCore
{
	public $level;
	protected $level_value = array(
		0 => 'DEBUG',
		1 => 'INFO',
		2 => 'WARNING',
		3 => 'ERROR',
	);

	const DEBUG = 0;
	const INFO = 1;
	const WARNING = 2;
	const ERROR = 3;

	public function __construct($level = self::INFO)
	{
		if (array_key_exists((int)$level, $this->level_value))
			$this->level = $level;
		else
			$this->level = self::INFO;
	}

	/**
	* Log the message
	*
	* @param string message
	* @param level
	*/
	abstract protected function logMessage($message, $level);

	/**
	 * Check the level and log the message if needed
	 *
	 * @param string message
	 * @param level
	 */
	public function log($message, $level = self::DEBUG)
	{
		if ($level >= $this->level)
			$this->logMessage($message, $level);
	}

	/**
	* Log a debug message
	*
	* @param string message
	*/
	public function logDebug($message)
	{
		$this->log($message, self::DEBUG);
	}

	/**
	* Log an info message
	*
	* @param string message
	*/
	public function logInfo($message)
	{
		$this->log($message, self::INFO);
	}

	/**
	* Log a warning message
	*
	* @param string message
	*/
	public function logWarning($message)
	{
		$this->log($message, self::WARNING);
	}

	/**
	* Log an error message
	*
	* @param string message
	*/
	public function logError($message)
	{
		$this->log($message, self::ERROR);
	}
}