classes/Element/Get/Each.php from jidaikobo-shibata/a11yc

classes/Element/Get/Each.php
Summary

Maintainability

3 hrs
Test Coverage

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

class Each
{
    /**
     * get first tag
     *
     * @param String $str
     * @return String
     */
    public static function firstTag($str)
    {
        $str = trim($str);

        if (strpos($str, '<') === false) return '';

        preg_match('/\<("[^"]*"|\'[^\']*\'|[^\'">])*\>/is', $str, $mms);
        if ( ! isset($mms[0])) return '';
        $str = $mms[0];

        // blankless
        $str = str_replace('/>', ' />', $str);

        return $str;
    }

    /**
     * TextFromElement
     *
     * @param String $str whole html
     * @return String|Bool
     */
    public static function textFromElement($str)
    {
        $text = '';

        // alt of img
        if (strpos($str, 'img') !== false)
        {
            $imgs = explode('>', $str);
            foreach ($imgs as $img)
            {
                if (strpos($img, 'img') === false) continue;
                $attrs = \A11yc\Element\Get::attributes($img.">");

                foreach ($attrs as $kk => $vv)
                {
                    if (strpos($kk, 'alt') !== false)
                    {
                        $text.= $vv;
                    }
                }
            }
            $text = trim($text);
        }

        // others
        $text = strip_tags($str).$text;
        $text = trim($text);

        return $text;
    }

    /**
     * get doctype
     *
     * @param String $url
     * @return Mixed|String|Bool|Null
     */
    public static function doctype($url)
    {
        if (empty(Validate::$hl_htmls[$url])) return false;
        $html = Validate::$hl_htmls[$url];

        preg_match("/\<!DOCTYPE [^\>]+?\>/is", $html, $ms);

        if ( ! isset($ms[0])) return false; // doctypeless

        // doctype
        $doctype = null;
        $target_str = strtolower(str_replace(array("\n", ' '), '', $ms[0]));

        // html5
        if(strpos($target_str, 'doctypehtml>') !== false)
        {
            $doctype = 'html5';
        }
        // HTML4
        else if (strpos($target_str, 'dtdhtml4.0') !== false)
        {
            $doctype = 'html4';
        }
        // xhtml1x
        else if(strpos($target_str, 'dtdxhtml1') !== false)
        {
            $doctype = 'xhtml1';
        }

        return $doctype;
    }

    /**
     * get lang
     *
     * @param String $url
     * @return String
     */
    public static function lang($url)
    {
        if (isset(static::$langs[$url])) return static::$langs[$url];
        if (empty(Validate::$hl_htmls[$url])) return '';

        preg_match("/\<html ([^\>]+?)\>/is", Validate::$hl_htmls[$url], $ms);
        if ( ! isset($ms[0])) return ''; // langless

        $attrs = \A11yc\Element\Get::attributes($ms[0]);
        if ( ! isset($attrs['lang'])) return '';
        static::$langs[$url] = $attrs['lang'];
        return static::$langs[$url];
    }
}