htmlpurifier/library/HTMLPurifier/URIScheme/nntp.php

<?php

require_once 'HTMLPurifier/URIScheme.php';

/**
 * Validates nntp (Network News Transfer Protocol) as defined by generic RFC 1738
 */
class HTMLPurifier_URIScheme_nntp extends HTMLPurifier_URIScheme {
    
    var $default_port = 119;
    var $browsable = false;
    
    function validateComponents(
        $userinfo, $host, $port, $path, $query, $config, &$context
    ) {
        list($userinfo, $host, $port, $path, $query) = 
            parent::validateComponents(
                $userinfo, $host, $port, $path, $query, $config, $context );
        return array(null, $host, $port, $path, null);
    }
    
}