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import os |
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import posixpath |
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import datasets |
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from datasets import DatasetInfo, DownloadManager |
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from fsspec.core import url_to_fs |
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_EXTENSION = [".png", ".jpg", ".jpeg", ".webp", ".bmp"] |
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class DanbooruDataset(datasets.GeneratorBasedBuilder): |
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BUILDER_CONFIGS = [ |
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datasets.BuilderConfig(name="full"), |
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] |
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def _info(self) -> DatasetInfo: |
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features = { |
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"image": datasets.Image(), |
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"post_id": datasets.Value("int64") |
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} |
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info = datasets.DatasetInfo( |
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features=datasets.Features(features), |
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supervised_keys=None, |
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citation="", |
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) |
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return info |
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def _split_generators(self, dl_manager: DownloadManager): |
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base_path = dl_manager._base_path |
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if base_path.startswith(datasets.config.HF_ENDPOINT): |
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base_path = base_path[len(datasets.config.HF_ENDPOINT):].replace("/resolve/", "@", 1) |
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base_path = "hf://" + base_path.lstrip("/") |
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fs, path = url_to_fs(base_path) |
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urls = fs.glob(posixpath.join(path, "**/*.tar"), detail=False) |
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archives = dl_manager.download(["hf://" + url for url in urls]) |
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archives = [dl_manager.iter_archive(archives) for archives in archives] |
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return [datasets.SplitGenerator(name="train", gen_kwargs={"archives": archives})] |
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def _generate_examples(self, archives): |
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for archive in archives: |
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for path, f in archive: |
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path_root, path_ext = os.path.splitext(path) |
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if path_ext.lower() not in _EXTENSION: |
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continue |
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post_id = int(os.path.basename(path_root)) |
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yield path, {"image": {"bytes": f.read()}, "post_id": post_id} |
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