josefglatz/RemoveEmptyParagraphViewHelper.php

## RemoveEmptyParagraphViewHelper.php
<?php
declare(strict_types = 1);
namespace JosefGlatz\Theme\ViewHelpers\Format;

use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;
use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;
use TYPO3Fluid\Fluid\Core\ViewHelper\Traits\CompileWithContentArgumentAndRenderStatic;

/**
 * Remove empty P tags from $content by using preg_replace
 */
class RemoveEmptyParagraphViewHelper extends AbstractViewHelper
{
    use CompileWithContentArgumentAndRenderStatic;

    /**
     * @var bool
     */
    protected $escapeOutput = false;

    /**
     * @return void
     */
    public function initializeArguments()
    {
        $this->registerArgument('content', 'string', 'String to be relieved of empty paragraphs');
    }

    /**
     * Return $content without empty paragraphs
     *
     * @param array $arguments
     * @param \Closure $renderChildrenClosure
     * @param RenderingContextInterface $renderingContext
     * @return mixed
     */
    public static function renderStatic(array $arguments, \Closure $renderChildrenClosure, RenderingContextInterface $renderingContext)
    {
        $content = $renderChildrenClosure();
        $content = preg_replace('~\\s?<p>(?:\\s|&nbsp;)+</p>\\s?~', '', $content);

        return $content;
    }
}

## Text.html
<!-- The ViewHeler can be used in a Fluid template to cleanup the gibberish content of editors which mean that you make spaces with empty paragraphs -->
<html xmlns:f="http://typo3.org/ns/TYPO3/CMS/Fluid/ViewHelpers"
	  xmlns:theme="http://typo3.org/ns/JosefGlatz/Theme/ViewHelpers" data-namespace-typo3-fluid="true">
<f:spaceless>
	<div class="CE CE_TEXTCENTERED {data.space_before_class} {data.space_after_class}" id="c{data.uid}">
		<f:if condition="{data._LOCALIZED_UID}">
			<a id="c{data._LOCALIZED_UID}"></a>
		</f:if>
		<div class="container-wrapper">
			<div class="row">
				<div class="col-12 text-center">
					{data.bodytext -> f:format.html() -> theme:format.removeEmptyParagraph()}
				</div>
			</div>
		</div>
	</div>
</f:spaceless>
</html>
	<?php
	declare(strict_types = 1);
	namespace JosefGlatz\Theme\ViewHelpers\Format;

	use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;
	use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;
	use TYPO3Fluid\Fluid\Core\ViewHelper\Traits\CompileWithContentArgumentAndRenderStatic;

	/**
	* Remove empty P tags from $content by using preg_replace
	*/
	class RemoveEmptyParagraphViewHelper extends AbstractViewHelper
	{
	use CompileWithContentArgumentAndRenderStatic;

	/**
	* @var bool
	*/
	protected $escapeOutput = false;

	/**
	* @return void
	*/
	public function initializeArguments()
	{
	$this->registerArgument('content', 'string', 'String to be relieved of empty paragraphs');
	}

	/**
	* Return $content without empty paragraphs
	*
	* @param array $arguments
	* @param \Closure $renderChildrenClosure
	* @param RenderingContextInterface $renderingContext
	* @return mixed
	*/
	public static function renderStatic(array $arguments, \Closure $renderChildrenClosure, RenderingContextInterface $renderingContext)
	{
	$content = $renderChildrenClosure();
	$content = preg_replace('~\\s?<p>(?:\\s\| )+</p>\\s?~', '', $content);

	return $content;
	}
	}
	<!-- The ViewHeler can be used in a Fluid template to cleanup the gibberish content of editors which mean that you make spaces with empty paragraphs -->
	<html xmlns:f="http://typo3.org/ns/TYPO3/CMS/Fluid/ViewHelpers"
	xmlns:theme="http://typo3.org/ns/JosefGlatz/Theme/ViewHelpers" data-namespace-typo3-fluid="true">
	<f:spaceless>
	<div class="CE CE_TEXTCENTERED {data.space_before_class} {data.space_after_class}" id="c{data.uid}">
	<f:if condition="{data._LOCALIZED_UID}">
	<a id="c{data._LOCALIZED_UID}"></a>
	</f:if>
	<div class="container-wrapper">
	<div class="row">
	<div class="col-12 text-center">
	{data.bodytext -> f:format.html() -> theme:format.removeEmptyParagraph()}
	</div>
	</div>
	</div>
	</div>
	</f:spaceless>
	</html>