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 += $m->handlers();
  48         }
  49     }
  50
  51     function set_index_module($mod)
  52     {
  53         $this->__idx = $mod;
  54     }
  55
  56     function find_hook()
  57     {
  58         $p = $this->path;
  59
  60         while ($p) {
  61             if (array_key_exists($p, $this->__hooks))
  62                 break;
  63
  64             $p = substr($p, 0, strrpos($p, '/'));
  65         }
  66
  67         if (empty($this->__hooks[$p])) {
  68             return null;
  69         }
  70
  71         $hook = $this->__hooks[$p];
  72
  73         if (!is_callable($hook['hook'])) {
  74             return null;
  75         }
  76
  77         $this->argv    = explode('/', substr($this->path, strlen($p)));
  78         $this->argv[0] = $p;
  79
  80         return $hook;
  81     }
  82
  83     function call_hook(&$page)
  84     {
  85         $hook = $this->find_hook();
  86
  87         if (is_null($hook)) {
  88             return PL_NOT_FOUND;
  89         }
  90
  91         $args    = $this->argv;
  92         $args[0] = &$page;
  93
  94         if ($hook['auth'] > Session::get('auth', AUTH_PUBLIC)) {
  95             $_SESSION['session']->doAuth($page);
  96         }
  97
  98         return call_user_func_array($hook['hook'], $args);
  99     }
 100
 101     function run()
 102     {
 103         global $page;
 104
 105         new_skinned_page('index.tpl', AUTH_PUBLIC);
 106
 107         if (empty($this->path)) {
 108             $this->path = 'index';
 109         }
 110
 111         switch ($this->call_hook($page)) {
 112           case PL_FORBIDDEN:
 113             $this->__mods['core']->handler_403($page);
 114             break;
 115
 116           case PL_NOT_FOUND:
 117             $this->__mods['core']->handler_404($page);
 118             break;
 119         }
 120         $page->assign_by_ref('platal', $this);
 121         $page->run();
 122     }
 123 }
 124
 125 ?>