Fix streaming mode & dataset viewer (#2)

- Fix streaming mode & dataset viewer (319b87e816aa0ba2b93747c7cd6a82367e3281fd)


Co-authored-by: Quentin Lhoest <lhoestq@users.noreply.huggingface.co>

commavq.py

@@ -1,13 +1,12 @@
 import datasets
-import glob
 import os
 import numpy as np
 
 SHARD_SIZE = 2500
 NUM_SHARDS = 40
-_URLS = [
-      f'https://huggingface.co/datasets/commaai/commavq/resolve/main/data_{i*SHARD_SIZE}_to_{(i+1)*SHARD_SIZE}.zip' for i in range(NUM_SHARDS)
-    ] + [ f'https://huggingface.co/datasets/commaai/commavq/resolve/main/val.zip' ]
+_DATA_FILES = [
+      f'data_{i*SHARD_SIZE}_to_{(i+1)*SHARD_SIZE}.zip' for i in range(NUM_SHARDS)
+    ] + [ 'val.zip' ]
 
 _DESCRIPTION = """\
 TODO
@@ -26,7 +25,7 @@ class CommaVQ(datasets.GeneratorBasedBuilder):
   def _split_generators(self, dl_manager):
     """Returns SplitGenerators."""
     dl_manager.download_config.ignore_url_params = True
-    downloaded_files = dl_manager.download(_URLS)
+    downloaded_files = dl_manager.download(_DATA_FILES)
     local_extracted_archive = dl_manager.extract(downloaded_files) if not dl_manager.is_streaming else [None]*len(downloaded_files)
     return [
       datasets.SplitGenerator(
@@ -35,11 +34,6 @@ class CommaVQ(datasets.GeneratorBasedBuilder):
         ) for i in range(len(downloaded_files))]
 
   def _generate_examples(self, local_extracted_archive, files):
-    files = glob.glob(os.path.join(local_extracted_archive, '*.npy'))
-    for path in files:
-      file_name = os.path.basename(path)
-      yield file_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]}
+    for path_in_archive, f in files:
+      path = os.path.join(local_extracted_archive, path_in_archive) if local_extracted_archive is not None else path_in_archive
+      yield path_in_archive, {'path': path}