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         var $URI, $ARGV;
   8         function __construct($uri) {
   9                 $this->URI = $uri;
  10                 $this->ARGV = array_merge(
  11                         array_prepend_keys($_COOKIE,'c_'),
  12                         array_prepend_keys($_FILES,'f_'),
  13                         array_prepend_keys($_GET,'g_'),
  14                         array_prepend_keys($_POST,'p_'));
  15         }
  16         function Start() {
  17                 if (isset($_SESSION)) {
  18                         $this->ARGV = array_merge(
  19                                 $this->ARGV,
  20                                 array_prepend_keys($_SESSION,'s_'));
  21                 }
  22         }
  23         function Run($MODULE, $METHOD) {
  24                 $nCalls = 0;
  25                 if (file_exists(strtolower('site/'.$MODULE.'.php'))) {
  26                         require_once strtolower('site/'.$MODULE.'.php');
  27                         if (class_exists($MODULE)) {
  28                                 $page = new $MODULE($this, $METHOD);
  29                                 $page->Start();
  30                                 $handlers = $page->get_handlers($METHOD);
  31                                 foreach($this->ARGV as $argk=>$argv) {
  32                                         if (in_array($argk, $handlers) &&
  33                                                 false !== $page->Run($argk)) {
  34                                                 $nCalls++;
  35                                         }
  36                                 }
  37                                 if ($nCalls == 0 && is_callable(array($page, '_default'))) {
  38                                         $page->Run('_default');
  39                                         $nCalls++;
  40                                 }
  41                                 $page->Finish();
  42                         }
  43                 }
  44                 return $nCalls;
  45         }
  46         function Finish() {}
  47 }
  48
  49 class Page {
  50         var $SITE, $METHOD, $URI;
  51         function __construct($site, $method) {
  52                 $this->SITE = $site;
  53                 $this->METHOD = $method;
  54                 foreach($site->ARGV as $k=>$v)
  55                         $this->$k = $v;
  56                 $this->URI = $site->URI;
  57         }
  58         function get_handlers() {
  59                 $handlers = isset($this->handlers[$this->METHOD]) ?
  60                                         $this->handlers[$this->METHOD] : array();
  61                 return $handlers;
  62         }
  63         function has_handler($handler) {
  64                 return isset($this->handlers[$this->METHOD]) ?
  65                                 in_array($handler, $this->handlers[$this->METHOD]) : false;
  66         }
  67
  68         function Start() {}
  69         function Run($handler) {
  70                 if (is_callable(array($this, $handler))) {
  71                         return array(0, call_user_func(array($this, $handler)));
  72                 } else {
  73                         return false;
  74                 }
  75         }
  76         function Finish() {}
  77 }