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 $path;
  33     var $argv;
  34
  35     function Platal()
  36     {
  37         $modules    = func_get_args();
  38         $this->path = trim(Get::_get('p', null), '/');
  39
  40         $this->__mods  = array();
  41         $this->__hooks = array();
  42
  43         foreach ($modules as $module) {
  44             $m =& PLModule::factory($this, $module);
  45             $this->__mods[$module] =& $m;
  46             $this->__hooks += $m->handlers();
  47         }
  48     }
  49
  50     function find_hook()
  51     {
  52         $p = $this->path;
  53
  54         while ($p) {
  55             if (array_key_exists($p, $this->__hooks))
  56                 break;
  57
  58             $p = substr($p, 0, strrpos($p, '/'));
  59         }
  60
  61         if (empty($this->__hooks[$p])) {
  62             return null;
  63         }
  64
  65         $hook = $this->__hooks[$p];
  66
  67         if (!is_callable($hook['hook'])) {
  68             return null;
  69         }
  70
  71         $this->argv    = explode('/', substr($this->path, strlen($p)));
  72         $this->argv[0] = $p;
  73
  74         return $hook;
  75     }
  76
  77     function call_hook(&$page)
  78     {
  79         $hook = $this->find_hook();
  80
  81         if (is_null($hook)) {
  82             return PL_NOT_FOUND;
  83         }
  84
  85         $args    = $this->argv;
  86         $args[0] = &$page;
  87
  88         if ($hook['auth'] > Session::get('auth', AUTH_PUBLIC)) {
  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             $this->__mods['core']->handler_index($page);
 103         } else
 104         switch ($this->call_hook($page)) {
 105           case PL_FORBIDDEN:
 106             $this->__mods['core']->handler_403($page);
 107             break;
 108
 109           case PL_NOT_FOUND:
 110             $this->__mods['core']->handler_404($page);
 111             break;
 112         }
 113         $page->assign_by_ref('platal', $this);
 114         $page->run();
 115     }
 116 }
 117
 118 ?>