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_FORBIDDEN', 403);
  23 define('PL_NOT_FOUND', 404);
  24
  25 class Platal
  26 {
  27     var $__mods;
  28     var $__hooks;
  29
  30     var $ns;
  31     var $path;
  32     var $argv;
  33
  34     function Platal()
  35     {
  36         $modules    = func_get_args();
  37         $this->path = trim(Get::_get('p', null), '/');
  38
  39         $this->__mods  = array();
  40         $this->__hooks = array();
  41
  42         array_unshift($modules, 'core');
  43         foreach ($modules as $module) {
  44             $this->__mods[$module] = $m = PLModule::factory($this, $module);
  45             $this->__hooks += $m->handlers();
  46         }
  47     }
  48
  49     function find_hook()
  50     {
  51         $p = $this->path;
  52
  53         while ($p) {
  54             if (array_key_exists($p, $this->__hooks))
  55                 break;
  56
  57             $p = substr($p, 0, strrpos($p, '/'));
  58         }
  59
  60         if (empty($this->__hooks[$p])) {
  61             return null;
  62         }
  63
  64         $hook = $this->__hooks[$p];
  65
  66         if (!is_callable($hook['hook'])) {
  67             return null;
  68         }
  69
  70         $this->argv    = explode('/', substr($this->path, strlen($p)));
  71         $this->argv[0] = $p;
  72
  73         return $hook;
  74     }
  75
  76     function call_hook(&$page)
  77     {
  78         $hook = $this->find_hook();
  79
  80         if (is_null($hook)) {
  81             return PL_NOT_FOUND;
  82         }
  83
  84         $args    = $this->argv;
  85         $args[0] = &$page;
  86
  87         if ($hook['auth'] > S::v('auth', AUTH_PUBLIC)) {
  88             // FIXME: don't use 'session' object anymore
  89             $_SESSION['session']->doAuth($page);
  90         }
  91
  92         return call_user_func_array($hook['hook'], $args);
  93     }
  94
  95     function run()
  96     {
  97         global $page;
  98
  99         new_skinned_page('index.tpl', AUTH_PUBLIC);
 100
 101         if (empty($this->path)) {
 102             $this->path = 'index';
 103         }
 104
 105         switch ($this->call_hook($page)) {
 106           case PL_FORBIDDEN:
 107             $this->__mods['core']->handler_403($page);
 108             break;
 109
 110           case PL_NOT_FOUND:
 111             $this->__mods['core']->handler_404($page);
 112             break;
 113         }
 114         $page->assign_by_ref('platal', $this);
 115         $page->run();
 116     }
 117 }
 118
 119 ?>