dispatcher.php

   1 <?php
   2         // @role                dispatcher
   3         // @title               Application Dispatcher
   4         // @author              Matt Todd
   5         // @date                2005-11-26 4:48PM
   6         // @desc                Interprets requests, instanciates appropriate controller,
   7         //                              and runs specified action with the appropriate Request data.
   8
   9         // timing
  10         $GLOBALS['dispatch_time_begin'] = microtime(true);
  11
  12         { // required libraries and globals
  13                 // get the working directory for this web app (useful for ensuring security)
  14                 $GLOBALS['working_dir'] = dirname(__FILE__);
  15
  16                 // load dependencies
  17                 include_once 'library/dependencies.php';
  18
  19                 // extensions
  20                 include_once Conventions::extension_path("RSS"); // generates RSS feeds
  21         }
  22
  23         try { // startup/boot logic
  24                 // handle sessions, initializations, & primary instanciations
  25                 if(class_exists('Session')) Session::initialize(); // initialize Session
  26
  27                 // interpret request
  28                 $request = new Request(Conventions::path_info());
  29                 $controller_name = Conventions::controller_name($request->controller);
  30                 $helper_name = Conventions::helper_name($request->controller);
  31                 $action_name = Conventions::action_name($request->action);
  32                 $action_id = $request->id;
  33
  34                 { // handle instanciating request and executing requested function
  35                         // include controller classes
  36                         if(file_exists(Conventions::controller_path($request->controller)))
  37                                 include_once Conventions::controller_path($request->controller);
  38                         else
  39                                 Debug::generic_exception_handler(new Exception("'{$controller_name}' does not exist"));
  40                         // includ helper (application or controller-specific)
  41                         if(file_exists(Conventions::helper_path($request->controller))) include_once Conventions::helper_path($request->controller); else $helper_name = "application_helper";
  42
  43                         // instanciate controller
  44                         $controller = new $controller_name($request);
  45
  46                         // dispatch action
  47                         $controller->dispatch($action_name, $action_id, $request);
  48                 }
  49         } catch(Exception $e) {
  50                 print_r($e);
  51         }
  52
  53         // timing
  54         $execution_time = round(microtime(true) - $GLOBALS['dispatch_time_begin'], 5);
  55         $execution_memory = round(memory_get_usage()/1024, 2);
  56         Debug::log("Dispatched {$_SERVER['PATH_INFO']} ({$execution_time}sec/{$execution_memory}kb)", 'internal', 'notice', 'Dispatcher');
  57
  58 ?>