library/HTMLPurifier/AttrTypes.php

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