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import csv |
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import os |
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import datasets |
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_DESCRIPTION = "" |
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_CITATION = "" |
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_HOMEPAGE = "" |
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_ROOT_URL = "https://digitalcorpora.s3.amazonaws.com/corpora/files/CC-MAIN-2021-31-PDF-UNTRUNCATED" |
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_ZIPFILES_URL_TEMPLATE = _ROOT_URL + "/zipfiles/{subdir}/{filename}" |
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_ZIPFILES_URLS = [ |
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_ZIPFILES_URL_TEMPLATE.format(subdir=f"{thousand:04d}-{thousand + 999:04d}", filename=f"{thousand + i:04d}.zip") |
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for thousand in range(0, 8000, 1000) for i in range(933 if thousand == 7000 else 1000) |
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] |
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_CC_HOSTS_URL = _ROOT_URL + "/metadata/cc-hosts-20230303.csv.gz" |
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_CC_PROVENANCE_URL = _ROOT_URL + "/metadata/cc-provenance-20230303.csv.gz" |
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_PDFINFO_URL = _ROOT_URL + "/metadata/pdfinfo-20230315.csv.gz" |
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_MISSING_PDFS = { |
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"177150.pdf", |
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"594742.pdf", |
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"706328.pdf", |
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"1260258.pdf", |
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"1544119.pdf", |
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"1591732.pdf", |
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"1640603.pdf", |
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"1890087.pdf", |
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"1920911.pdf", |
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"1992331.pdf", |
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"2519839.pdf", |
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"2712444.pdf", |
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"2765539.pdf", |
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"3179469.pdf", |
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"4170238.pdf", |
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"4414331.pdf", |
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"4512373.pdf", |
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"4977579.pdf", |
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"5198714.pdf", |
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"5236677.pdf", |
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"5447694.pdf", |
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"6318895.pdf", |
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"6817632.pdf", |
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"6940914.pdf", |
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"7241425.pdf", |
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"7279847.pdf", |
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"7407159.pdf", |
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"7635694.pdf", |
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"7889525.pdf" |
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} |
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class Pdfa(datasets.GeneratorBasedBuilder): |
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def _info(self): |
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return datasets.DatasetInfo( |
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description=_DESCRIPTION, |
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citation=_CITATION, |
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homepage=_HOMEPAGE, |
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features = datasets.Features({ |
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"pdf_bytes": datasets.Value("binary"), |
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"file_name": datasets.Value("string"), |
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"url_id": datasets.Value("string"), |
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"cc_host": { |
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"host": datasets.Value("string"), |
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"tld": datasets.Value("string"), |
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"ip_address": datasets.Value("string"), |
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"country": datasets.Value("string"), |
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"latitude": datasets.Value("float32"), |
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"longitude": datasets.Value("float32"), |
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}, |
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"cc_provenance": { |
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"url": datasets.Value("string"), |
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"cc_digest": datasets.Value("string"), |
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"cc_http_mime": datasets.Value("string"), |
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"cc_detected_mime": datasets.Value("string"), |
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"cc_warc_file_name": datasets.Value("string"), |
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"cc_warc_start": datasets.Value("int64"), |
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"cc_warc_end": datasets.Value("int64"), |
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"cc_truncated": datasets.Value("string"), |
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"fetched_status": datasets.Value("string"), |
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"fetched_digest": datasets.Value("string"), |
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"fetched_length": datasets.Value("int64"), |
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}, |
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"pdfinfo": { |
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"parse_time_millis": datasets.Value("int64"), |
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"exit_value": datasets.Value("int64"), |
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"timeout": datasets.Value("string"), |
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"stderr": datasets.Value("string"), |
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"pdf_version": datasets.Value("string"), |
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"creator": datasets.Value("string"), |
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"producer": datasets.Value("string"), |
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"created": datasets.Value("string"), |
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"modified": datasets.Value("string"), |
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"custom_metadata": datasets.Value("string"), |
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"metadata_stream": datasets.Value("string"), |
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"tagged": datasets.Value("string"), |
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"user_properties": datasets.Value("string"), |
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"form": datasets.Value("string"), |
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"javascript": datasets.Value("string"), |
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"pages": datasets.Value("int64"), |
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"page_size": datasets.Value("string"), |
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"page_rotation": datasets.Value("int64"), |
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"optimized": datasets.Value("string"), |
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}, |
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}) |
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) |
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def _split_generators(self, dl_manager): |
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cc_host_csv_path = dl_manager.download_and_extract(_CC_HOSTS_URL) |
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cc_provenance_csv_path = dl_manager.download_and_extract(_CC_PROVENANCE_URL) |
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pdfinfo_csv_path = dl_manager.download_and_extract(_PDFINFO_URL) |
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pdfs_directories = tuple(dl_manager.download_and_extract(_ZIPFILES_URLS)) |
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return [ |
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datasets.SplitGenerator(name=datasets.Split.TRAIN, gen_kwargs={ |
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"cc_host_csv_path": cc_host_csv_path, |
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"cc_provenance_csv_path": cc_provenance_csv_path, |
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"pdfinfo_csv_path": pdfinfo_csv_path, |
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"pdfs_directories": pdfs_directories |
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}), |
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] |
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def _generate_examples(self, cc_host_csv_path, cc_provenance_csv_path, pdfinfo_csv_path, pdfs_directories): |
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"""Yields examples.""" |
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with open(cc_host_csv_path, encoding="utf-8") as cc_host_file, \ |
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open(cc_provenance_csv_path, encoding="utf-8") as cc_provenance_csv_file, \ |
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open(pdfinfo_csv_path, encoding="utf-8") as pdfinfo_csv_file: |
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cc_host_reader = csv.DictReader(cc_host_file) |
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cc_provenance_reader = csv.DictReader(cc_provenance_csv_file) |
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pdfinfo_csv_reader = csv.DictReader(pdfinfo_csv_file) |
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for cc_host_dict, cc_provenance_dict, pdfinfo_dict in zip(cc_host_reader, cc_provenance_reader, pdfinfo_csv_reader): |
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file_name = cc_host_dict["file_name"] |
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url_id = cc_host_dict["url_id"] |
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if file_name in _MISSING_PDFS: |
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continue |
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pdf_idx = int(file_name.split(".")[0]) |
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pdf_dir = pdfs_directories[pdf_idx // 1000] |
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pdf_path = os.path.join(pdf_dir, file_name) |
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cc_host_dict.pop("url_id") |
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cc_host_dict.pop("file_name") |
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cc_provenance_dict.pop("url_id") |
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cc_provenance_dict.pop("file_name") |
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pdfinfo_dict.pop("url_id") |
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pdfinfo_dict.pop("file_name") |
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with open(pdf_path, "rb") as pdf_file: |
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yield file_name, { |
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"pdf_bytes": pdf_file.read(), |
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"file_name": file_name, |
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"url_id": url_id, |
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"cc_host": {k: v if v else None for k, v in cc_host_dict.items()}, |
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"cc_provenance": {k: v if v else None for k, v in cc_provenance_dict.items()}, |
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"pdfinfo": {k: v if v else None for k, v in pdfinfo_dict.items()} |
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} |
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