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