<?php

/* Does most of the work 

   Simon Willison, 28th October 2002
*/

require_once('Snoopy.inc.php');
require_once('SnoopyPlus.class.php');
require_once('classes.inc.php');

class W3cValidator {
    var $uri;
    var $validatorUri = 'http://validator.w3.org:8001/check?uri=%s&output=xml';
    var $checkUri;
    function validate($uri) {
        $this->uri = $uri;
        $this->checkUri = sprintf($this->validatorUri, $uri);
        $snoopy = new SnoopyPlus;
        $snoopy->fetch($this->checkUri);
        $status = $snoopy->getHeader('x-w3c-validator-status');
        if (!$status) {
            /* The Validator chucked back XHTML for some reason, create error */
            $result = new ValidationResults;
            $result->uri = $this->uri;
            $result->status = 'Failed';
            $result->errormsg = 'The validator did not return a valid response. This almost certainly means your page was invalid. Remember that the validator is still a beta product.';
            return $result;
        }
        /* Status is fine - parse the results */
        $parser = new ValidationParser;
        if (!$parser->parse($snoopy->results)) {
            // XML parsing failed for some reason
            $result = new ValidationResults;
            $result->uri = $this->uri;
            $result->status = 'Failed';
            $result->errormsg = 'The validator did not return a valid response - the returned XML was malformed. Remember that the validator is still a beta product.';
            return $result;
        }
        /* Parsing worked fine, return the result */
        $result = $parser->results;
        $result->uri = $this->uri;
        $result->status = $status;
        return $result;
    }
}

?>