<?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		EllisLab Dev Team


 * @copyright		Copyright (c) 2008 - 2014, EllisLab, Inc.


 * @copyright		Copyright (c) 2014 - 2015, British Columbia Institute of Technology (http://bcit.ca/)


 * @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		EllisLab 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 */