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     var $__usens;
  32
  33     var $ns;
  34     var $path;
  35     var $argv;
  36
  37     function Platal()
  38     {
  39         $modules    = func_get_args();
  40         $this->path = trim(Get::_get('p', null), '/');
  41
  42         $this->__mods  = array();
  43         $this->__hooks = array();
  44         $this->__usens = false;
  45         $this->ns      = '';
  46
  47         array_unshift($modules, 'core');
  48         foreach ($modules as $module) {
  49             $this->__mods[$module] = $m = PLModule::factory($this, $module);
  50             $this->__hooks += $m->handlers();
  51         }
  52     }
  53
  54     function use_namespace()
  55     {
  56         $this->__usens = true;
  57     }
  58
  59     function find_hook()
  60     {
  61         $p = $this->path;
  62
  63         while ($p) {
  64             if (array_key_exists($p, $this->__hooks))
  65                 break;
  66
  67             $p = substr($p, 0, strrpos($p, '/'));
  68         }
  69
  70         if (empty($this->__hooks[$p])) {
  71             return null;
  72         }
  73
  74         $hook = $this->__hooks[$p];
  75
  76         if (!is_callable($hook['hook'])) {
  77             return null;
  78         }
  79
  80         $this->argv    = explode('/', substr($this->path, strlen($p)));
  81         $this->argv[0] = $p;
  82
  83         return $hook;
  84     }
  85
  86     function call_hook(&$page)
  87     {
  88         $hook = $this->find_hook();
  89
  90         if (is_null($hook)) {
  91             if ($this->__usens) {
  92                 $i = strpos($this->path, '/');
  93                 if ($i) {
  94                     $this->ns   = $this->path;
  95                     $this->path = 'index';
  96                 }
  97             }
  98             return PL_NOT_FOUND;
  99         }
 100
 101         $args    = $this->argv;
 102         $args[0] = &$page;
 103
 104         if ($hook['auth'] > Session::get('auth', AUTH_PUBLIC)) {
 105             $_SESSION['session']->doAuth($page);
 106         }
 107
 108         return call_user_func_array($hook['hook'], $args);
 109     }
 110
 111     function run()
 112     {
 113         global $page;
 114
 115         new_skinned_page('index.tpl', AUTH_PUBLIC);
 116
 117         if (empty($this->path)) {
 118             $this->__mods['core']->handler_index($page);
 119         } else
 120         switch ($this->call_hook($page)) {
 121           case PL_FORBIDDEN:
 122             $this->__mods['core']->handler_403($page);
 123             break;
 124
 125           case PL_NOT_FOUND:
 126             $this->__mods['core']->handler_404($page);
 127             break;
 128         }
 129         $page->assign_by_ref('platal', $this);
 130         $page->run();
 131     }
 132 }
 133
 134 ?>