<?php /** * Object that provides entity lookup table from entity name to character */ class HTMLPurifier_EntityLookup { /** * Assoc array of entity name to character represented. * @type array */ public $table; /** * Sets up the entity lookup table from the serialized file contents. * @param bool $file * @note The serialized contents are versioned, but were generated * using the maintenance script generate_entity_file.php * @warning This is not in constructor to help enforce the Singleton */ public function setup($file = false) { if (!$file) { $file = HTMLPURIFIER_PREFIX . '/HTMLPurifier/EntityLookup/entities.ser'; } $this->table = unserialize(file_get_contents($file)); } /** * Retrieves sole instance of the object. * @param bool|HTMLPurifier_EntityLookup $prototype Optional prototype of custom lookup table to overload with. * @return HTMLPurifier_EntityLookup */ public static function instance($prototype = false) { // no references, since PHP doesn't copy unless modified static $instance = null; if ($prototype) { $instance = $prototype; } elseif (!$instance) { $instance = new HTMLPurifier_EntityLookup(); $instance->setup(); } return $instance; } } // vim: et sw=4 sts=4