9.5/_href_lang_generator_8php_source.html

<?php

declare(strict_types = 1);


namespace ‪TYPO3\CMS\Seo\HrefLang;


/*

 * This file is part of the TYPO3 CMS project.

 *

 * It is free software; you can redistribute it and/or modify it under

 * the terms of the GNU General Public License, either version 2

 * of the License, or any later version.

 *

 * For the full copyright and license information, please read the

 * LICENSE.txt file that was distributed with this source code.

 *

 * The TYPO3 project - inspiring people to share!

 */


use Psr\Http\Message\ServerRequestInterface;

use ‪TYPO3\CMS\Core\Http\Uri;

use ‪TYPO3\CMS\Core\Site\Entity\Site;

use ‪TYPO3\CMS\Core\Site\Entity\SiteLanguage;

use ‪TYPO3\CMS\Core\Utility\GeneralUtility;

use ‪TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;

use ‪TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController;

use ‪TYPO3\CMS\Frontend\DataProcessing\LanguageMenuProcessor;


class ‪HrefLangGenerator

{

    public ‪$cObj;


    protected ‪$typoScriptFrontendController;


    protected ‪$request;


    public function ‪__construct(‪ContentObjectRenderer ‪$cObj = null, ‪TypoScriptFrontendController ‪$typoScriptFrontendController = null, ServerRequestInterface ‪$request = null)

    {

        if (‪$cObj === null) {

            ‪$cObj = GeneralUtility::makeInstance(ContentObjectRenderer::class);

        }

        if (‪$typoScriptFrontendController === null) {

            ‪$typoScriptFrontendController = $this->‪getTypoScriptFrontendController();

        }

        if (‪$request === null) {

            ‪$request = $this->‪getRequest();

        }


        $this->cObj = ‪$cObj;

        $this->typoScriptFrontendController = ‪$typoScriptFrontendController;

        $this->request = ‪$request;

    }


    public function ‪generate(): string

    {

        $hreflangs = [];

        if ((int)$this->typoScriptFrontendController->page['no_index'] === 1) {

            return '';

        }


        if ($this->request->getAttribute('site') instanceof Site) {

            $languageMenu = GeneralUtility::makeInstance(LanguageMenuProcessor::class);

            $languages = $languageMenu->process($this->cObj, [], [], []);

            foreach ($languages['languagemenu'] as $language) {

                if ($language['available'] === 1 && !empty($language['link'])) {

                    $href = $this->‪getAbsoluteUrl($language['link']);

                    $hreflangs[] =

                        '<link rel="alternate" hreflang="' . htmlspecialchars($language['hreflang']) . '" href="' . htmlspecialchars($href) . '"/>';

                }

            }


            if (count($hreflangs) > 1) {

                $href = $this->‪getAbsoluteUrl($languages['languagemenu'][0]['link']);

                $hreflangs[] =

                    '<link rel="alternate" hreflang="x-default" href="' . htmlspecialchars($href) . '"/>' . LF;


                $this->‪getTypoScriptFrontendController()->additionalHeaderData[] = implode(LF, $hreflangs);

            }

        }


        return implode(LF, $hreflangs);

    }


    protected function ‪getAbsoluteUrl(string $url): string

    {

        $uri = new Uri($url);

        if (empty($uri->getHost())) {

            $url = $this->‪getSiteLanguage()->‪getBase()->withPath($uri->getPath());


            if ($uri->getQuery()) {

                $url = $url->withQuery($uri->getQuery());

            }

        }


        return (string)$url;

    }


    protected function ‪getSiteLanguage(): SiteLanguage

    {

        return $this->request->getAttribute('language');

    }


    protected function ‪getTypoScriptFrontendController(): TypoScriptFrontendController

    {

        return ‪$GLOBALS['TSFE'];

    }


    protected function ‪getRequest(): ServerRequestInterface

    {

        return ‪$GLOBALS['TYPO3_REQUEST'];

    }

}