152 lines
5.0 KiB
PHP
152 lines
5.0 KiB
PHP
<?php
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/**
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* @package Joomla.Plugin
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* @subpackage System.languagecode
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*
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* @copyright (C) 2011 Open Source Matters, Inc. <https://www.joomla.org>
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* @license GNU General Public License version 2 or later; see LICENSE.txt
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*/
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namespace Joomla\Plugin\System\LanguageCode\Extension;
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use Joomla\CMS\Form\Form;
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use Joomla\CMS\Language\LanguageHelper;
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use Joomla\CMS\Language\Text;
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use Joomla\CMS\Plugin\CMSPlugin;
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// phpcs:disable PSR1.Files.SideEffects
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\defined('_JEXEC') or die;
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// phpcs:enable PSR1.Files.SideEffects
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/**
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* Language Code plugin class.
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*
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* @since 2.5
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*/
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final class LanguageCode extends CMSPlugin
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{
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/**
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* Plugin that changes the language code used in the <html /> tag.
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*
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* @return void
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*
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* @since 2.5
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*/
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public function onAfterRender()
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{
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// Use this plugin only in site application.
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if ($this->getApplication()->isClient('site')) {
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// Get the response body.
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$body = $this->getApplication()->getBody();
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// Get the current language code.
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$code = $this->getApplication()->getDocument()->getLanguage();
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// Get the new code.
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$new_code = $this->params->get($code);
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// Replace the old code by the new code in the <html /> tag.
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if ($new_code) {
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// Replace the new code in the HTML document.
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$patterns = [
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\chr(1) . '(<html.*\s+xml:lang=")(' . $code . ')(".*>)' . \chr(1) . 'i',
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\chr(1) . '(<html.*\s+lang=")(' . $code . ')(".*>)' . \chr(1) . 'i',
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];
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$replace = [
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'${1}' . strtolower($new_code) . '${3}',
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'${1}' . strtolower($new_code) . '${3}',
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];
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} else {
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$patterns = [];
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$replace = [];
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}
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// Replace codes in <link hreflang="" /> attributes.
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preg_match_all(\chr(1) . '(<link.*\s+hreflang=")([0-9a-z\-]*)(".*\s+rel="alternate".*>)' . \chr(1) . 'i', $body, $matches);
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foreach ($matches[2] as $match) {
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$new_code = $this->params->get(strtolower($match));
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if ($new_code) {
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$patterns[] = \chr(1) . '(<link.*\s+hreflang=")(' . $match . ')(".*\s+rel="alternate".*>)' . \chr(1) . 'i';
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$replace[] = '${1}' . $new_code . '${3}';
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}
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}
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preg_match_all(\chr(1) . '(<link.*\s+rel="alternate".*\s+hreflang=")([0-9A-Za-z\-]*)(".*>)' . \chr(1) . 'i', $body, $matches);
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foreach ($matches[2] as $match) {
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$new_code = $this->params->get(strtolower($match));
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if ($new_code) {
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$patterns[] = \chr(1) . '(<link.*\s+rel="alternate".*\s+hreflang=")(' . $match . ')(".*>)' . \chr(1) . 'i';
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$replace[] = '${1}' . $new_code . '${3}';
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}
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}
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// Replace codes in itemprop content
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preg_match_all(\chr(1) . '(<meta.*\s+itemprop="inLanguage".*\s+content=")([0-9A-Za-z\-]*)(".*>)' . \chr(1) . 'i', $body, $matches);
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foreach ($matches[2] as $match) {
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$new_code = $this->params->get(strtolower($match));
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if ($new_code) {
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$patterns[] = \chr(1) . '(<meta.*\s+itemprop="inLanguage".*\s+content=")(' . $match . ')(".*>)' . \chr(1) . 'i';
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$replace[] = '${1}' . $new_code . '${3}';
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}
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}
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$this->getApplication()->setBody(preg_replace($patterns, $replace, $body));
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}
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}
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/**
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* Prepare form.
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*
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* @param Form $form The form to be altered.
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* @param mixed $data The associated data for the form.
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*
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* @return boolean
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*
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* @since 2.5
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*/
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public function onContentPrepareForm(Form $form, $data)
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{
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// Check we are manipulating the languagecode plugin.
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if ($form->getName() !== 'com_plugins.plugin' || !$form->getField('languagecodeplugin', 'params')) {
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return true;
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}
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// Get site languages.
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if ($languages = LanguageHelper::getKnownLanguages(JPATH_SITE)) {
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// Inject fields into the form.
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foreach ($languages as $tag => $language) {
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$form->load('
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<form>
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<fields name="params">
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<fieldset
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name="languagecode"
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label="PLG_SYSTEM_LANGUAGECODE_FIELDSET_LABEL"
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description="PLG_SYSTEM_LANGUAGECODE_FIELDSET_DESC"
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>
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<field
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name="' . strtolower($tag) . '"
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type="text"
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label="' . $tag . '"
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description="' . htmlspecialchars(Text::sprintf('PLG_SYSTEM_LANGUAGECODE_FIELD_DESC', $language['name']), ENT_COMPAT, 'UTF-8') . '"
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translate_description="false"
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translate_label="false"
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size="7"
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filter="cmd"
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/>
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</fieldset>
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</fields>
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</form>');
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}
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}
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return true;
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}
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}
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