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 1 : {
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 $config Instance of HTMLPurifier_Config
21 : * @param $context Instance of HTMLPurifier_Context
22 : * @return Fully initialized HTMLPurifier_IDAccumulator
23 : */
24 : public static function build($config, $context) {
25 2 : $id_accumulator = new HTMLPurifier_IDAccumulator();
26 2 : $id_accumulator->load($config->get('Attr', 'IDBlacklist'));
27 2 : return $id_accumulator;
28 : }
29 :
30 : /**
31 : * Add an ID to the lookup table.
32 : * @param $id ID to be added.
33 : * @return Bool status, true if success, false if there's a dupe
34 : */
35 : public function add($id) {
36 1 : if (isset($this->ids[$id])) return false;
37 1 : return $this->ids[$id] = true;
38 : }
39 :
40 : /**
41 : * Load a list of IDs into the lookup table
42 : * @param $array_of_ids Array of IDs to load
43 : * @note This function doesn't care about duplicates
44 : */
45 : public function load($array_of_ids) {
46 2 : foreach ($array_of_ids as $id) {
47 0 : $this->ids[$id] = true;
48 0 : }
49 2 : }
50 :
51 : }
52 :
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