copy_structure FS can be of type str

Author: tfeldmann

fs/copy.py

@@ -306,14 +306,16 @@ def copy_structure(
         dst_root (str): Path to the target root of the tree structure.
 
     """
-    _src_root = src_fs.validatepath(src_root)
-    _dst_root = dst_fs.validatepath(dst_root)
-    # It's not allowed to copy a structure into itself
-    if src_fs == dst_fs and isbase(_src_root, _dst_root):
-        raise IllegalDestination(dst_root)
     walker = walker or Walker()
     with manage_fs(src_fs) as _src_fs:
         with manage_fs(dst_fs, create=True) as _dst_fs:
+            _src_root = _src_fs.validatepath(src_root)
+            _dst_root = _dst_fs.validatepath(dst_root)
+
+            # It's not allowed to copy a structure into itself
+            if _src_fs == _dst_fs and isbase(_src_root, _dst_root):
+                raise IllegalDestination(dst_root)
+
             with _src_fs.lock(), _dst_fs.lock():
                 _dst_fs.makedirs(_dst_root, recreate=True)
                 for dir_path in walker.dirs(_src_fs, _src_root):