[FEATURE] Add camelcase to kebabcase viewhelper

Classes/ViewHelpers/CamelcaseToKebabcaseViewHelper.php

@@ -0,0 +1,21 @@
+<?php
+namespace Cjel\TemplatesAide\ViewHelpers;
+
+use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;
+use TYPO3Fluid\Fluid\Core\ViewHelper\Traits\CompileWithRenderStatic;
+use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;
+
+class CamelcaseToKebabcaseViewHelper extends AbstractViewHelper
+{
+    public static function renderStatic(
+        array $arguments,
+        \Closure $renderChildrenClosure,
+        RenderingContextInterface $renderingContext
+    ) {
+        $string = preg_replace('/[\s.]+/', '_', $renderChildrenClosure());
+        $string = preg_replace('/[^0-9a-zA-Z_\-]/', '-', $string);
+        $string = strtolower(preg_replace('/[A-Z]+/', '-\0', $string));
+        $string = trim($string, '-_');
+        return preg_replace('/[_\-][_\-]+/', '-', $string);
+    }
+}