classes/Validate/Check/Langless.php from jidaikobo-shibata/a11yc

classes/Validate/Check/Langless.php
Summary

Maintainability

3 hrs
Test Coverage

Issues
<?php
/**
 * * A11yc\Validate\Check\Langless
 *
 * @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 Langless extends Validate
{
    /**
     * langless
     *
     * @param String $url
     * @return Void
     */
    public static function check($url)
    {
        Validate\Set::log($url, 'langless', self::$unspec, 5);
        if (Validate::$is_partial === true) return;
        Validate\Set::log($url, 'langless', self::$unspec, 1);

        // do not use Element\Get::ignoredHtml() and Element\Get::elementsByRe()
        // in case of "<html>" is in comment out
        preg_match_all(
            "/\<([a-zA-Z1-6]+?) +?([^\>]*?)[\/]*?\>|\<([a-zA-Z1-6]+?)[ \/]*?\>/i",
            static::$hl_htmls[$url],
            $ms);

        $has_langs = array();
        foreach ($ms[0] as $k => $v)
        {
            $attrs = Element\Get::attributes($v);
            if ( ! isset($attrs['lang']) && ! isset($attrs['xml:lang']) ) continue;
            $has_langs[0][$k] = $ms[0][$k];
            $has_langs[1][$k] = $ms[1][$k];
            $has_langs[2][$k] = $ms[2][$k];
            $has_langs[3][$k] = $attrs;
        }

        // is lang exists?
        if ( ! isset($has_langs[1]) || ! in_array('html', $has_langs[1]))
        {
            Validate\Set::error($url, 'langless', 0, '', Arr::get($ms, '0.0'));
            static::addErrorToHtml($url, 'langless', static::$error_ids[$url]);
            return;
        }
        else
        {
            Validate\Set::log($url, 'langless', self::$unspec, 2);
        }

        $ietf_subtags = require(A11YC_PATH.'/resources/ietf_langs.php');

        foreach ($has_langs[3] as $k => $v)
        {
            $tstr = $ms[0][$k];

            // it must be at leaset one of them is exist
            $lang = isset($v['lang']) ? $v['lang'] : $v['xml:lang'];

            // lang check
            $ls = explode('-', $lang);
            if ( ! array_key_exists(strtolower($ls[0]), $ietf_subtags))
            {
                // 3.1.1
                if ($has_langs[1][$k] == 'html')
                {
                    Validate\Set::error($url, 'invalid_page_lang', $k, $tstr, $tstr);
                }
                // 3.1.2
                else
                {
                    Validate\Set::error($url, 'invalid_partial_lang', $k, $tstr, $tstr);
                }
            }
        }
        static::addErrorToHtml($url, 'invalid_page_lang', static::$error_ids[$url]);
        static::addErrorToHtml($url, 'invalid_partial_lang', static::$error_ids[$url]);
    }
}