TYPO3 TAG ContentObject

Services.yaml

services:
  _defaults:
    autowire: true
    autoconfigure: true
    public: false
  TagContentObject\:
    resource: '../Classes/*'

  TagContentObject\ContentObject\TagContentObject:
    tags:
      - name: frontend.contentobject
        identifier: 'TAG'

setup.typoscript

    5 = TAG
    5 {
        tagName = h1
        attributes {
            class {
                10 = TEXT
                10.value = first
                20 = TEXT
                20.value = second
            }
            data-stuff = two
        }

        content = TEXT
        content.data = page:title
    }

TagContentObject.php

<?php

namespace TagContentObject\ContentObject;

use TYPO3\CMS\Core\Context\TypoScriptAspect;
use TYPO3\CMS\Core\TypoScript\TypoScriptService;
use TYPO3\CMS\Core\Utility\GeneralUtility;
use TYPO3\CMS\Frontend\ContentObject\AbstractContentObject;

/**
 * Contains TAG class object.
 */
class TagContentObject extends AbstractContentObject
{
    protected static $SELF_CLOSING_TAGS = ['area', 'base', 'br', 'col', 'command', 'embed', 'hr', 'img', 'input', 'keygen', 'link', 'meta', 'param', 'source', 'track', 'wbr'];

    /**
     * Rendering the cObject, TAG
     *
     * @param array $conf Array of TypoScript properties
     * @return string Output
     */
    public function render($conf = [])
    {
        if (!is_array($conf)) {
            return '';
        }
        $typoScriptService = GeneralUtility::makeInstance(TypoScriptService::class);
        $configuration = $typoScriptService->convertTypoScriptArrayToPlainArray($conf);

        $tagName = $configuration['tagName'] ?? 'div';
        $tagAttributes = [];
        $tagContent = '';

        $omitClosingTag = $configuration['omitClosingTag'] ?? false;
        $selfClosingTag = in_array($tagName, self::$SELF_CLOSING_TAGS, true) || (boolean) $configuration['selfClosingTag'] ?? false;
        $attributes = $configuration['attributes'] ?? [];

        foreach ($attributes as $attributeName => $attributeNameValue) {
            if (is_string($attributeNameValue)) {
                $tagAttributes[htmlspecialchars((string) $attributeName, ENT_COMPAT, 'UTF-8', false)][] = htmlspecialchars((string) $attributeNameValue, ENT_COMPAT, 'UTF-8', false);
                continue;
            } elseif (is_array($attributeNameValue)) {
                foreach ($attributeNameValue as $attributeNameValueConfiguration) {
                    $tagAttributes[htmlspecialchars((string) $attributeName, ENT_COMPAT, 'UTF-8', false)][] = htmlspecialchars((string) $this->cObj->cObjGetSingle($attributeNameValueConfiguration['_typoScriptNodeValue'], $attributeNameValueConfiguration, ENT_COMPAT, 'UTF-8', false));
                }
            }
        }

        if ($configuration['content'] ?? false) {
            $tagContent = htmlspecialchars((string)$this->cObj->cObjGetSingle($configuration['content']['_typoScriptNodeValue'], $configuration['content'] ?? []), ENT_COMPAT, 'UTF-8', false);
        }


        return '<' . $tagName . self::renderAttributes($tagAttributes) . ($selfClosingTag ? ' /' : '') . '>' . (!$omitClosingTag && !$selfClosingTag ? $tagContent . '</' . $tagName . '>' : '');
    }

    private static function renderAttributes(array $attributes): string
    {
        $result = '';

        foreach ($attributes as $key => $values) {
            $result .= ' ' . $key . '="' . implode(' ', $values) . '"';
        }

        return rtrim($result);
    }
}