first commit

public/typo3conf/ext/off/Classes/Utilities/FileUtility.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace HermannTelser\Zuladungsliste\Utilities;
+
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Core\Utility\PathUtility;
+
+/**
+ * Class FileUtility
+ */
+class FileUtility extends AbstractUtility
+{
+    /**
+     * @param string $path Absolute path
+     * @throws \Exception
+     */
+    public static function createFolderIfNotExists(string $path)
+    {
+        if (!is_dir($path) && !GeneralUtility::mkdir($path)) {
+            throw new \UnexpectedValueException(
+                'Folder ' . self::getRelativeFolderFromAbsolutePath($path) . ' does not exists and can not be created!',
+                1516373962125
+            );
+        }
+    }
+
+    /**
+     * Get relative path from absolute path, but don't touch if it's already a relative path
+     *
+     * @param string $path
+     * @return string
+     */
+    public static function getRelativeFolderFromAbsolutePath(string $path): string
+    {
+        if (PathUtility::isAbsolutePath($path)) {
+            $path = PathUtility::getRelativePathTo($path);
+        }
+        return $path;
+    }
+}