jidaikobo-shibata/a11yc

<?php
/**
 * * A11yc\Validate\Check\SameAltAndFilenameOfImg
 *
 * @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 SameAltAndFilenameOfImg extends Validate
{
    /**
     * same alt and filename of img
     *
     * @param String $url
     * @return Void
     */
    public static function check($url)
    {
        Validate\Set::log($url, 'same_alt_and_filename_of_img', self::$unspec, 1);
        $str = Element\Get::ignoredHtml($url);
        $ms = Element\Get::elementsByRe($str, 'ignores', 'imgs');
        if ( ! $ms[0])
        {
            Validate\Set::log($url, 'same_alt_and_filename_of_img', self::$unspec, 4);
            return;
        }

        foreach ($ms[0] as $k => $m)
        {
            $attrs = Element\Get::attributes($m);
            if ( ! isset($attrs['alt']) || ! isset($attrs['src'])) continue;
            if (empty($attrs['alt'])) continue;
            $tstr = $m;

            $filename = basename($attrs['src']);

            Validate\Set::errorAndLog(
                $attrs['alt'] == $filename || // within extension
                $attrs['alt'] == substr($filename, 0, strrpos($filename, '.')) || // without extension
                $attrs['alt'] == substr($filename, 0, strrpos($filename, '-')), // without size
                $url,
                'same_alt_and_filename_of_img',
                $k,
                $tstr,
                '"'.$filename.'"'
            );
        }
        static::addErrorToHtml($url, 'same_alt_and_filename_of_img', static::$error_ids[$url], 'ignores');
    }
}