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: |