jidaikobo-shibata/a11yc

<?php
/**
 * * A11yc\Validate\Check\InvalidTag
 *
 * @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 InvalidTag extends Validate
{
    /**
     * invalid tag
     *
     * @param String $url
     * @return Void
     */
    public static function check($url)
    {
        Validate\Set::log($url, 'cannot_contain_newline', self::$unspec, 1);
        Validate\Set::log($url, 'unbalanced_quotation', self::$unspec, 1);
        Validate\Set::log($url, 'cannot_contain_multibyte_space', self::$unspec, 1);
        $str = Element\Get::ignoredHtml($url);
        $ms = Element\Get::elementsByRe($str, 'ignores', 'tags');
        if ( ! $ms[0]) return;

        foreach ($ms[0] as $k => $m)
        {
            // newline character must not exists in attr
            // thx https://twitter.com/sbtnbfm/status/948881557233713152
            $attrs = Element\Get::attributes($m);
            $tstr = $ms[0][$k];

            foreach ($attrs as $val)
            {
                if (strpos($val, "\n") !== false)
                {
                    Validate\Set::error($url, 'cannot_contain_newline', $k, $tstr, $m);
                    break;
                }
                else
                {
                    Validate\Set::log($url, 'cannot_contain_newline', $tstr, 2);
                }
            }

            // unbalanced_quotation
            // delete qouted quotation
            $tag = str_replace(array("\\'", '\\"'), '', $m);

            // in Englsih, single quote is frequent on grammar
            // if ((substr_count($tag, '"') + substr_count($tag, "'")) % 2 !== 0)
            if (substr_count($tag, '"') % 2 !== 0)
            {
                Validate\Set::error($url, 'unbalanced_quotation', $k, $tstr, $m);
            }
            else
            {
                Validate\Set::log($url, 'unbalanced_quotation', $tstr, 2);
            }

            if (A11YC_LANG != 'ja') continue;

            // multi-byte space
            // ignore values of attributes
            $tag = preg_replace("/(\".+?\"|'.+?')/is", '', $tag);

            if (strpos($tag, '　') !== false)
            {
                Validate\Set::error($url, 'cannot_contain_multibyte_space', $k, $tstr, $m);
            }
            else
            {
                Validate\Set::log($url, 'cannot_contain_multibyte_space', $tstr, 2);
            }
        }
        static::addErrorToHtml($url, 'unbalanced_quotation', static::$error_ids[$url], 'ignores');
        static::addErrorToHtml($url, 'cannot_contain_multibyte_space', static::$error_ids[$url], 'ignores');
        static::addErrorToHtml($url, 'cannot_contain_newline', static::$error_ids[$url], 'ignores');
    }
}