<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');

/**

 * CodeIgniter

 *

 * An open source application development framework for PHP 5.1.6 or newer

 *

 * @package		CodeIgniter

 * @author		ExpressionEngine Dev Team

 * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.

 * @license		http://codeigniter.com/user_guide/license.html

 * @link		http://codeigniter.com

 * @since		Version 1.0

 * @filesource

 */



// ------------------------------------------------------------------------



/**

 * Logging Class

 *

 * @package		CodeIgniter

 * @subpackage	Libraries

 * @category	Logging

 * @author		ExpressionEngine Dev Team

 * @link		http://codeigniter.com/user_guide/general/errors.html

 */

class CI_Log {



	protected $_log_path;

	protected $_threshold	= 1;

	protected $_date_fmt	= 'Y-m-d H:i:s';

	protected $_enabled	= TRUE;

	protected $_levels	= array('ERROR' => '1', 'DEBUG' => '2',  'INFO' => '3', 'ALL' => '4');



	/**

	 * Constructor

	 */

	public function __construct()

	{

		$config =& get_config();



		$this->_log_path = ($config['log_path'] != '') ? $config['log_path'] : APPPATH.'logs/';



		if ( ! is_dir($this->_log_path) OR ! is_really_writable($this->_log_path))

		{

			$this->_enabled = FALSE;

		}



		if (is_numeric($config['log_threshold']))

		{

			$this->_threshold = $config['log_threshold'];

		}



		if ($config['log_date_format'] != '')

		{

			$this->_date_fmt = $config['log_date_format'];

		}

	}



	// --------------------------------------------------------------------



	/**

	 * Write Log File

	 *

	 * Generally this function will be called using the global log_message() function

	 *

	 * @param	string	the error level

	 * @param	string	the error message

	 * @param	bool	whether the error is a native PHP error

	 * @return	bool

	 */

	public function write_log($level = 'error', $msg, $php_error = FALSE)

	{

		if ($this->_enabled === FALSE)

		{

			return FALSE;

		}



		$level = strtoupper($level);



		if ( ! isset($this->_levels[$level]) OR ($this->_levels[$level] > $this->_threshold))

		{

			return FALSE;

		}



		$filepath = $this->_log_path.'log-'.date('Y-m-d').'.php';

		$message  = '';



		if ( ! file_exists($filepath))

		{

			$message .= "<"."?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed'); ?".">\n\n";

		}



		if ( ! $fp = @fopen($filepath, FOPEN_WRITE_CREATE))

		{

			return FALSE;

		}



		$message .= $level.' '.(($level == 'INFO') ? ' -' : '-').' '.date($this->_date_fmt). ' --> '.$msg."\n";



		flock($fp, LOCK_EX);

		fwrite($fp, $message);

		flock($fp, LOCK_UN);

		fclose($fp);



		@chmod($filepath, FILE_WRITE_MODE);

		return TRUE;

	}



}

// END Log Class



/* End of file Log.php */

/* Location: ./system/libraries/Log.php */