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($handlers as $handler) {
  32                                         if (isset($this->argv[$handler]) &&
  33                                                 false !== $page->Run($handler)) {
  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;
  51         var $method;
  52         var $uri;
  53         var $argv;
  54         function __construct($site, $method) {
  55                 $this->argv = $site->argv;
  56                 foreach($this->argv as $k=>$v)
  57                         $this->$k = $v;
  58                 $this->site = $site;
  59                 $this->uri = $site->uri;
  60                 $this->method = $method;
  61         }
  62         function get_handlers() {
  63                 $handlers = isset($this->handlers[$this->method]) ?
  64                                         $this->handlers[$this->method] : array();
  65                 return $handlers;
  66         }
  67         function has_handler($handler) {
  68                 return isset($this->handlers[$this->method]) ?
  69                                 in_array($handler, $this->handlers[$this->method]) : false;
  70         }
  71
  72         function Start() {}
  73         function Run($handler) {
  74                 if (is_callable(array($this, $handler))) {
  75                         return array(0, call_user_func(array($this, $handler)));
  76                 } else {
  77                         return false;
  78                 }
  79         }
  80         function Finish() {}
  81 }