jidaikobo-shibata/a11yc

<?php
/**
 * * A11yc\Validate\Check\Titleless
 *
 * @package    part of A11yc
 * @author     Jidaikobo Inc.
 * @license    The MIT License (MIT)
 * @copyright  Jidaikobo Inc.
 * @link       http://www.jidaikobo.com
 */
namespace A11yc\Validate\Check;

use A11yc\Element;
use A11yc\Validate;

class Titleless extends Validate
{
    /**
     * titleless
     *
     * @param String $url
     * @return Void
     */
    public static function check($url)
    {
        Validate\Set::log($url, 'titleless', self::$unspec, 5);
        if (Validate::$is_partial === true) return;
        Validate\Set::log($url, 'titleless', self::$unspec, 1);

        $str = Element\Get::ignoredHtml($url);

        // to locate first element at the error
        $ms = Element\Get::elementsByRe($str, 'ignores', 'tags');

        if (
            strpos(strtolower($str), '<title') === false || // lacknesss of title element
            preg_match("/\<title[^\>]*?\>[ 　]*?\<\/title/si", $str) // lacknesss of title
        )
        {
            Validate\Set::error($url, 'titleless', 0, '', Arr::get($ms[0], 0, ''));
        }
        else
        {
            Validate\Set::log($url, 'titleless', self::$unspec, 2);
        }

        static::addErrorToHtml($url, 'titleless', static::$error_ids[$url], 'ignores');
    }
}