classes/Platal.php

   1 <?php
   2 /***************************************************************************
   3  *  Copyright (C) 2003-2006 Polytechnique.org                              *
   4  *  http://opensource.polytechnique.org/                                   *
   5  *                                                                         *
   6  *  This program is free software; you can redistribute it and/or modify   *
   7  *  it under the terms of the GNU General Public License as published by   *
   8  *  the Free Software Foundation; either version 2 of the License, or      *
   9  *  (at your option) any later version.                                    *
  10  *                                                                         *
  11  *  This program is distributed in the hope that it will be useful,        *
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of         *
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
  14  *  GNU General Public License for more details.                           *
  15  *                                                                         *
  16  *  You should have received a copy of the GNU General Public License      *
  17  *  along with this program; if not, write to the Free Software            *
  18  *  Foundation, Inc.,                                                      *
  19  *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA                *
  20  ***************************************************************************/
  21
  22 define('PL_OK', 0);
  23 define('PL_NEEDLOGIN', 1);
  24 define('PL_FORBIDDEN', 403);
  25 define('PL_NOT_FOUND', 404);
  26
  27 class Platal
  28 {
  29     var $__mods;
  30     var $__hooks;
  31
  32     var $ns;
  33     var $path;
  34     var $argv;
  35
  36     function Platal()
  37     {
  38         $modules    = func_get_args();
  39         $this->path = trim(Get::_get('p', null), '/');
  40
  41         $this->__mods  = array();
  42         $this->__hooks = array();
  43
  44         array_unshift($modules, 'core');
  45         foreach ($modules as $module) {
  46             $this->__mods[$module] = $m = PLModule::factory($this, $module);
  47             $this->__hooks += $m->handlers();
  48         }
  49     }
  50
  51     function find_hook()
  52     {
  53         $p = $this->path;
  54
  55         while ($p) {
  56             if (array_key_exists($p, $this->__hooks))
  57                 break;
  58
  59             $p = substr($p, 0, strrpos($p, '/'));
  60         }
  61
  62         if (empty($this->__hooks[$p])) {
  63             return null;
  64         }
  65
  66         $hook = $this->__hooks[$p];
  67
  68         if (!is_callable($hook['hook'])) {
  69             return null;
  70         }
  71
  72         $this->argv    = explode('/', substr($this->path, strlen($p)));
  73         $this->argv[0] = $p;
  74
  75         return $hook;
  76     }
  77
  78     function call_hook(&$page)
  79     {
  80         $hook = $this->find_hook();
  81
  82         if (is_null($hook)) {
  83             return PL_NOT_FOUND;
  84         }
  85
  86         $args    = $this->argv;
  87         $args[0] = &$page;
  88
  89         if ($hook['auth'] > Session::get('auth', AUTH_PUBLIC)) {
  90             $_SESSION['session']->doAuth($page);
  91         }
  92
  93         return call_user_func_array($hook['hook'], $args);
  94     }
  95
  96     function run()
  97     {
  98         global $page;
  99
 100         new_skinned_page('index.tpl', AUTH_PUBLIC);
 101
 102         if (empty($this->path)) {
 103             $this->path = 'index';
 104         }
 105
 106         switch ($this->call_hook($page)) {
 107           case PL_FORBIDDEN:
 108             $this->__mods['core']->handler_403($page);
 109             break;
 110
 111           case PL_NOT_FOUND:
 112             $this->__mods['core']->handler_404($page);
 113             break;
 114         }
 115         $page->assign_by_ref('platal', $this);
 116         $page->run();
 117     }
 118 }
 119
 120 ?>