<?php /** * Supertype for classes that define a strategy for modifying/purifying tokens. * * While HTMLPurifier's core purpose is fixing HTML into something proper, * strategies provide plug points for extra configuration or even extra * features, such as custom tags, custom parsing of text, etc. */ HTMLPurifier_ConfigDef::define( 'Core', 'EscapeInvalidTags', false, 'bool', 'When true, invalid tags will be written back to the document as plain '. 'text. Otherwise, they are silently dropped.' ); class HTMLPurifier_Strategy { /** * Executes the strategy on the tokens. * * @param $tokens Array of HTMLPurifier_Token objects to be operated on. * @param $config Configuration options * @returns Processed array of token objects. */ function execute($tokens, $config = null) { trigger_error('Cannot call abstract function', E_USER_ERROR); } } ?>