Normalize local filesystem handling

cuebench.py

@@ -12,6 +12,7 @@ from datasets import (
     Value,
     Version,
 )
+from fsspec.implementations.local import LocalFileSystem
 
 HF_DATA_BASE_URL = "https://huggingface.co/datasets/ishwarbb23/cuebench/resolve/main"
 DATA_BASE_OVERRIDE = os.getenv("CUEBENCH_DATA_BASE_URL")
@@ -112,3 +113,23 @@ class CUEBench(GeneratorBasedBuilder):
                         "target_classes": example["target_classes"],
                     }
                     idx += 1
+
+    def _ensure_local_fs_protocol(self):
+        if isinstance(getattr(self, "_fs", None), LocalFileSystem):
+            protocol = getattr(self._fs, "protocol", None)
+            if protocol != "file":
+                self._fs.protocol = "file"
+            output_dir = getattr(self, "_output_dir", None)
+            if isinstance(output_dir, str):
+                stripped = self._fs._strip_protocol(output_dir)
+                if stripped:
+                    self._output_dir = stripped
+
+    def _download_and_prepare(self, *args, **kwargs):
+        result = super()._download_and_prepare(*args, **kwargs)
+        self._ensure_local_fs_protocol()
+        return result
+
+    def as_dataset(self, *args, **kwargs):
+        self._ensure_local_fs_protocol()
+        return super().as_dataset(*args, **kwargs)