support streaming

commavq.py

@@ -25,10 +25,20 @@ class CommaVQ(datasets.GeneratorBasedBuilder):
 
   def _split_generators(self, dl_manager):
     """Returns SplitGenerators."""
-    downloaded_files = dl_manager.download_and_extract(_URLS)
-    return [datasets.SplitGenerator(name=str(i), gen_kwargs={"filepaths": x}) for i, x in enumerate(downloaded_files)]
+    dl_manager.download_config.ignore_url_params = True
+    downloaded_files = dl_manager.download(_URLS)
+    local_extracted_archive = dl_manager.extract(downloaded_files) if not dl_manager.is_streaming else None
+    return [
+      datasets.SplitGenerator(
+        name=str(i),
+        gen_kwargs={"local_extracted_archive":local_extracted_archive, "files": dl_manager.iter_archive(downloaded_files[i])}
+        ) for i, x in enumerate(downloaded_files)]
 
-  def _generate_examples(self, filepaths):
-    for path in glob.glob(f'{filepaths}/*.npy'):
+  def _generate_examples(self, local_extracted_archive, files):
+    for path in glob.glob(f'{local_extracted_archive}/*.npy'):
       name = os.path.basename(path)
       yield name, {'path': path}
+
+  def _get_examples_iterable_for_split(self, split_generator):
+    for path in split_generator.gen_kwargs['files']:
+      yield path[0], {'path': path[0]}