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<?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
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