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d4949327 NL |
1 | <?php\r |
2 | \r | |
3 | /**\r | |
4 | * Object that provides entity lookup table from entity name to character\r | |
5 | */\r | |
6 | class HTMLPurifier_EntityLookup\r | |
7 | {\r | |
8 | /**\r | |
9 | * Assoc array of entity name to character represented.\r | |
10 | * @type array\r | |
11 | */\r | |
12 | public $table;\r | |
13 | \r | |
14 | /**\r | |
15 | * Sets up the entity lookup table from the serialized file contents.\r | |
16 | * @param bool $file\r | |
17 | * @note The serialized contents are versioned, but were generated\r | |
18 | * using the maintenance script generate_entity_file.php\r | |
19 | * @warning This is not in constructor to help enforce the Singleton\r | |
20 | */\r | |
21 | public function setup($file = false)\r | |
22 | {\r | |
23 | if (!$file) {\r | |
24 | $file = HTMLPURIFIER_PREFIX . '/HTMLPurifier/EntityLookup/entities.ser';\r | |
25 | }\r | |
26 | $this->table = unserialize(file_get_contents($file));\r | |
27 | }\r | |
28 | \r | |
29 | /**\r | |
30 | * Retrieves sole instance of the object.\r | |
31 | * @param bool|HTMLPurifier_EntityLookup $prototype Optional prototype of custom lookup table to overload with.\r | |
32 | * @return HTMLPurifier_EntityLookup\r | |
33 | */\r | |
34 | public static function instance($prototype = false)\r | |
35 | {\r | |
36 | // no references, since PHP doesn't copy unless modified\r | |
37 | static $instance = null;\r | |
38 | if ($prototype) {\r | |
39 | $instance = $prototype;\r | |
40 | } elseif (!$instance) {\r | |
41 | $instance = new HTMLPurifier_EntityLookup();\r | |
42 | $instance->setup();\r | |
43 | }\r | |
44 | return $instance;\r | |
45 | }\r | |
46 | }\r | |
47 | \r | |
48 | // vim: et sw=4 sts=4\r |