| 1: | <?php |
| 2: | |
| 3: | /** |
| 4: | * Component of HTMLPurifier_AttrContext that accumulates IDs to prevent dupes |
| 5: | * @note In Slashdot-speak, dupe means duplicate. |
| 6: | * @note The default constructor does not accept $config or $context objects: |
| 7: | * use must use the static build() factory method to perform initialization. |
| 8: | */ |
| 9: | class HTMLPurifier_IDAccumulator |
| 10: | { |
| 11: | |
| 12: | /** |
| 13: | * Lookup table of IDs we've accumulated. |
| 14: | * @public |
| 15: | */ |
| 16: | public $ids = array(); |
| 17: | |
| 18: | /** |
| 19: | * Builds an IDAccumulator, also initializing the default blacklist |
| 20: | * @param HTMLPurifier_Config $config Instance of HTMLPurifier_Config |
| 21: | * @param HTMLPurifier_Context $context Instance of HTMLPurifier_Context |
| 22: | * @return HTMLPurifier_IDAccumulator Fully initialized HTMLPurifier_IDAccumulator |
| 23: | */ |
| 24: | public static function build($config, $context) |
| 25: | { |
| 26: | $id_accumulator = new HTMLPurifier_IDAccumulator(); |
| 27: | $id_accumulator->load($config->get('Attr.IDBlacklist')); |
| 28: | return $id_accumulator; |
| 29: | } |
| 30: | |
| 31: | /** |
| 32: | * Add an ID to the lookup table. |
| 33: | * @param string $id ID to be added. |
| 34: | * @return bool status, true if success, false if there's a dupe |
| 35: | */ |
| 36: | public function add($id) |
| 37: | { |
| 38: | if (isset($this->ids[$id])) { |
| 39: | return false; |
| 40: | } |
| 41: | return $this->ids[$id] = true; |
| 42: | } |
| 43: | |
| 44: | /** |
| 45: | * Load a list of IDs into the lookup table |
| 46: | * @param $array_of_ids Array of IDs to load |
| 47: | * @note This function doesn't care about duplicates |
| 48: | */ |
| 49: | public function load($array_of_ids) |
| 50: | { |
| 51: | foreach ($array_of_ids as $id) { |
| 52: | $this->ids[$id] = true; |
| 53: | } |
| 54: | } |
| 55: | } |
| 56: | |
| 57: | // vim: et sw=4 sts=4 |
| 58: |