lib/joe/site.lib.php

   1 <?php
   2 /* Generic Site Classes
   3  * 2007/04/09 Joe Presbrey <presbrey@mit.edu>
   4  */
   5
   6 class Site {
   7         function Start() {}
   8         function Call($MODULE, $METHOD, $ARGP=array()) {
   9                 $nCalls = 0;
  10                 if (file_exists(strtolower('site/'.$MODULE.'.php'))) {
  11                         require_once strtolower('site/'.$MODULE.'.php');
  12                         if (class_exists($MODULE)) {
  13                                 $page = new $MODULE($this, $METHOD, $ARGP);
  14                                 $page->Start();
  15                                 $handlers = $page->get_handlers($METHOD);
  16                                 switch ($METHOD) {
  17                                         case 'GET':
  18                                         case 'get':
  19                                                 $argv = array_merge($_COOKIE, $_FILES, $_POST, $_GET, isset($_SESSION)?$_SESSION:array()); break;
  20                                         case 'POST':
  21                                         case 'post':
  22                                         default:
  23                                                 $argv = array_merge($_COOKIE, $_FILES, $_GET, $_POST, isset($_SESSION)?$_SESSION:array()); break;
  24                                 }
  25                                 foreach($handlers as $handler) {
  26                                         if (isset($argv[$handler]) &&
  27                                                 false !== $page->Call($handler, $argv)) {
  28                                                 $nCalls++;
  29                                         }
  30                                 }
  31                                 if ($nCalls == 0 && is_callable(array($page, '_default'))) {
  32                                         $page->Call('_default', $argv);
  33                                         $nCalls++;
  34                                 }
  35                                 $page->Finish();
  36                         }
  37                 }
  38                 return $nCalls;
  39         }
  40         function Finish() {}
  41 }
  42
  43 class Page {
  44         var $site, $method, $argp;
  45         function __construct($site, $method, $argp) {
  46                 $this->site = $site;
  47                 $this->method = $method;
  48                 $this->argp = $argp;
  49         }
  50         function get_handlers() {
  51                 $handlers = isset($this->handlers[$this->method]) ?
  52                                         $this->handlers[$this->method] : array();
  53                 return $handlers;
  54         }
  55         function has_handler($handler) {
  56                 return isset($this->handlers[$this->method]) ? in_array($handler, $this->handlers[$this->method]) : false;
  57         }
  58
  59         function Start() {}
  60         function Call($handler, $argv) {
  61                 if (is_callable(array($this, $handler))) {
  62                         return array(0, call_user_func(array($this, $handler), $argv));
  63                 } else {
  64                         return false;
  65                 }
  66         }
  67         function Finish() {}
  68 }