Store contents to prevent reading file twice

src/Object/File.php

@@ -48,6 +48,10 @@ final class File extends Item
      * @var bool
      */
     private $isEditable;
+    /**
+     * @var string
+     */
+    private $content = null;
 
     /**
      * PublicFile constructor.
@@ -82,7 +86,15 @@ final class File extends Item
                 $parent = substr($this->path, 0, $parentSep);
             } else $parent = '/';
             $this->parent = base64_encode($parent);
-            if ($editable[$extension] ?? false && $file->read() !== false) {
+
+            $isEditable = $editable[$extension] ?? false;
+            $content = false;
+            if ($isEditable) {
+                $content = $file->read();
+            }
+
+            if ($isEditable && $content !== false) {
+                $this->content = $content;
                 $this->isEditable = true;
             } else {
                 $this->isEditable = false;
@@ -175,6 +187,7 @@ final class File extends Item
      */
     public function getContents()
     {
+        if ($this->content !== null) return $this->content;
         return $this->file->read();
     }