<?php /** * Chainable filters for custom URI processing. * * These filters can perform custom actions on a URI filter object, * including transformation or blacklisting. * * @warning This filter is called before scheme object validation occurs. * Make sure, if you require a specific scheme object, you * you check that it exists. This allows filters to convert * proprietary URI schemes into regular ones. */ abstract class HTMLPurifier_URIFilter { /** * Unique identifier of filter */ public $name; /** * True if this filter should be run after scheme validation. */ public $post = false; /** * Performs initialization for the filter */ public function prepare($config) {return true;} /** * Filter a URI object * @param $uri Reference to URI object variable * @param $config Instance of HTMLPurifier_Config * @param $context Instance of HTMLPurifier_Context * @return bool Whether or not to continue processing: false indicates * URL is no good, true indicates continue processing. Note that * all changes are committed directly on the URI object */ abstract public function filter(&$uri, $config, $context); } // vim: et sw=4 sts=4