library/HTMLPurifier/AttrTypes.php

   1 <?php
   2
   3 require_once 'HTMLPurifier/AttrDef/Lang.php';
   4 require_once 'HTMLPurifier/AttrDef/Enum.php';
   5 require_once 'HTMLPurifier/AttrDef/HTML/Bool.php';
   6 require_once 'HTMLPurifier/AttrDef/HTML/ID.php';
   7 require_once 'HTMLPurifier/AttrDef/HTML/Length.php';
   8 require_once 'HTMLPurifier/AttrDef/HTML/MultiLength.php';
   9 require_once 'HTMLPurifier/AttrDef/HTML/Nmtokens.php';
  10 require_once 'HTMLPurifier/AttrDef/HTML/Pixels.php';
  11 require_once 'HTMLPurifier/AttrDef/HTML/Color.php';
  12 require_once 'HTMLPurifier/AttrDef/Integer.php';
  13 require_once 'HTMLPurifier/AttrDef/Text.php';
  14 require_once 'HTMLPurifier/AttrDef/URI.php';
  15
  16 /**
  17  * Provides lookup array of attribute types to HTMLPurifier_AttrDef objects
  18  */
  19 class HTMLPurifier_AttrTypes
  20 {
  21     /**
  22      * Lookup array of attribute string identifiers to concrete implementations
  23      * @protected
  24      */
  25     var $info = array();
  26
  27     /**
  28      * Constructs the info array, supplying default implementations for attribute
  29      * types.
  30      */
  31     function HTMLPurifier_AttrTypes() {
  32         // pseudo-types, must be instantiated via shorthand
  33         $this->info['Enum']    = new HTMLPurifier_AttrDef_Enum();
  34         $this->info['Bool']    = new HTMLPurifier_AttrDef_HTML_Bool();
  35
  36         $this->info['CDATA']    = new HTMLPurifier_AttrDef_Text();
  37         $this->info['ID']       = new HTMLPurifier_AttrDef_HTML_ID();
  38         $this->info['Length']   = new HTMLPurifier_AttrDef_HTML_Length();
  39         $this->info['MultiLength'] = new HTMLPurifier_AttrDef_HTML_MultiLength();
  40         $this->info['NMTOKENS'] = new HTMLPurifier_AttrDef_HTML_Nmtokens();
  41         $this->info['Pixels']   = new HTMLPurifier_AttrDef_HTML_Pixels();
  42         $this->info['Text']     = new HTMLPurifier_AttrDef_Text();
  43         $this->info['URI']      = new HTMLPurifier_AttrDef_URI();
  44         $this->info['LanguageCode'] = new HTMLPurifier_AttrDef_Lang();
  45         $this->info['Color']    = new HTMLPurifier_AttrDef_HTML_Color();
  46
  47         // number is really a positive integer (one or more digits)
  48         // FIXME: ^^ not always, see start and value of list items
  49         $this->info['Number']   = new HTMLPurifier_AttrDef_Integer(false, false, true);
  50     }
  51
  52     /**
  53      * Retrieves a type
  54      * @param $type String type name
  55      * @return Object AttrDef for type
  56      */
  57     function get($type) {
  58
  59         // determine if there is any extra info tacked on
  60         if (strpos($type, '#') !== false) list($type, $string) = explode('#', $type, 2);
  61         else $string = '';
  62
  63         if (!isset($this->info[$type])) {
  64             trigger_error('Cannot retrieve undefined attribute type ' . $type, E_USER_ERROR);
  65             return;
  66         }
  67
  68         return $this->info[$type]->make($string);
  69
  70     }
  71
  72     /**
  73      * Sets a new implementation for a type
  74      * @param $type String type name
  75      * @param $impl Object AttrDef for type
  76      */
  77     function set($type, $impl) {
  78         $this->info[$type] = $impl;
  79     }
  80 }
  81
  82