source: sourcecode/system/core/Exceptions.php @ 1

<?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
 */

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

/**
 * Exceptions Class
 *
 * @package             CodeIgniter
 * @subpackage  Libraries
 * @category    Exceptions
 * @author              ExpressionEngine Dev Team
 * @link                http://codeigniter.com/user_guide/libraries/exceptions.html
 */
class CI_Exceptions {
        var $action;
        var $severity;
        var $message;
        var $filename;
        var $line;

        /**
         * Nesting level of the output buffering mechanism
         *
         * @var int
         * @access public
         */
        var $ob_level;

        /**
         * List if available error levels
         *
         * @var array
         * @access public
         */
        var $levels = array(
                                                E_ERROR                         =>      'Error',
                                                E_WARNING                       =>      'Warning',
                                                E_PARSE                         =>      'Parsing Error',
                                                E_NOTICE                        =>      'Notice',
                                                E_CORE_ERROR            =>      'Core Error',
                                                E_CORE_WARNING          =>      'Core Warning',
                                                E_COMPILE_ERROR         =>      'Compile Error',
                                                E_COMPILE_WARNING       =>      'Compile Warning',
                                                E_USER_ERROR            =>      'User Error',
                                                E_USER_WARNING          =>      'User Warning',
                                                E_USER_NOTICE           =>      'User Notice',
                                                E_STRICT                        =>      'Runtime Notice'
                                        );


        /**
         * Constructor
         */
        public function __construct()
        {
                $this->ob_level = ob_get_level();
                // Note:  Do not log messages from this constructor.
        }

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

        /**
         * Exception Logger
         *
         * This function logs PHP generated error messages
         *
         * @access      private
         * @param       string  the error severity
         * @param       string  the error string
         * @param       string  the error filepath
         * @param       string  the error line number
         * @return      string
         */
        function log_exception($severity, $message, $filepath, $line)
        {
                $severity = ( ! isset($this->levels[$severity])) ? $severity : $this->levels[$severity];

                log_message('error', 'Severity: '.$severity.'  --> '.$message. ' '.$filepath.' '.$line, TRUE);
        }

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

        /**
         * 404 Page Not Found Handler
         *
         * @access      private
         * @param       string  the page
         * @param       bool    log error yes/no
         * @return      string
         */
        function show_404($page = '', $log_error = TRUE)
        {
                $heading = "404 Page Not Found";
                $message = "The page you requested was not found.";

                // By default we log this, but allow a dev to skip it
                if ($log_error)
                {
                        log_message('error', '404 Page Not Found --> '.$page);
                }

                echo $this->show_error($heading, $message, 'error_404', 404);
                exit;
        }

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

        /**
         * General Error Page
         *
         * This function takes an error message as input
         * (either as a string or an array) and displays
         * it using the specified template.
         *
         * @access      private
         * @param       string  the heading
         * @param       string  the message
         * @param       string  the template name
         * @param       int             the status code
         * @return      string
         */
        function show_error($heading, $message, $template = 'error_general', $status_code = 500)
        {
                set_status_header($status_code);

                $message = '<p>'.implode('</p><p>', ( ! is_array($message)) ? array($message) : $message).'</p>';

                if (ob_get_level() > $this->ob_level + 1)
                {
                        ob_end_flush();
                }
                ob_start();
                include(APPPATH.'errors/'.$template.'.php');
                $buffer = ob_get_contents();
                ob_end_clean();
                return $buffer;
        }

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

        /**
         * Native PHP error handler
         *
         * @access      private
         * @param       string  the error severity
         * @param       string  the error string
         * @param       string  the error filepath
         * @param       string  the error line number
         * @return      string
         */
        function show_php_error($severity, $message, $filepath, $line)
        {
                $severity = ( ! isset($this->levels[$severity])) ? $severity : $this->levels[$severity];

                $filepath = str_replace("\\", "/", $filepath);

                // For safety reasons we do not show the full file path
                if (FALSE !== strpos($filepath, '/'))
                {
                        $x = explode('/', $filepath);
                        $filepath = $x[count($x)-2].'/'.end($x);
                }

                if (ob_get_level() > $this->ob_level + 1)
                {
                        ob_end_flush();
                }
                ob_start();
                include(APPPATH.'errors/error_php.php');
                $buffer = ob_get_contents();
                ob_end_clean();
                echo $buffer;
        }


}
// END Exceptions Class

/* End of file Exceptions.php */
/* Location: ./system/core/Exceptions.php */