| import gzip | |
| import logging | |
| import re | |
| import requests | |
| import urllib.request | |
| from typing import Optional | |
| from warcio.archiveiterator import ArchiveIterator | |
| from selectolax.parser import HTMLParser | |
| import datasets | |
| from datasets import ( | |
| BuilderConfig, Version, DownloadManager, SplitGenerator, Split, Features, Value | |
| ) | |
| COMMON = "https://data.commoncrawl.org/" | |
| LANGUAGES = ['af', 'ar', 'bg', 'bn', 'ca', 'cs', 'cy', 'da', 'de', 'el', 'en', 'es', 'et', 'fa', 'fi', 'fr', 'gu', | |
| 'he,\nhi', 'hr', 'hu', 'id', 'it', 'ja', 'kn', 'ko', 'lt', 'lv', 'mk', 'ml', 'mr', 'ne', 'nl', 'no', 'pa', | |
| 'pl,\npt', 'ro', 'ru', 'sk', 'sl', 'so', 'sq', 'sv', 'sw', 'ta', 'te', 'th', 'tl', 'tr', 'uk', 'ur', 'vi', | |
| 'zh-cn', 'zh-tw'] | |
| URL = "https://data.commoncrawl.org/crawl-data/CC-MAIN-2022-49/warc.paths.gz" | |
| logger = logging.getLogger(__name__) | |
| VERSION = Version("1.0.0") | |
| def get_common_crawl_url(url: str): | |
| with urllib.request.urlopen(url) as req: | |
| with gzip.GzipFile(fileobj=req) as uncomp: | |
| return [COMMON+data for data in uncomp.read().decode().splitlines()] | |
| def _decode_text(_bytes): | |
| try: | |
| return _bytes.decode('utf-8') | |
| except: | |
| return None | |
| def _preprocessing(text): | |
| tree = HTMLParser(text) | |
| if tree.body is None: | |
| return None | |
| for tag in tree.css('script'): | |
| tag.decompose() | |
| for tag in tree.css('style'): | |
| tag.decompose() | |
| text = tree.body.text(separator='\n') | |
| text = re.sub("\n{2,}", "\n\n", text) | |
| text = re.sub("\t{2,}", "\t\t", text) | |
| return text | |
| class CommonCrawlConfig(BuilderConfig): | |
| def __init__(self, features, data_url, citation, url, version, label_classes: Optional[tuple] = None, **kwargs): | |
| super(CommonCrawlConfig, self).__init__(version=version, **kwargs) | |
| self.features = features | |
| self.label_classes = label_classes | |
| self.data_url = data_url | |
| self.citation = citation | |
| self.url = url | |
| class CommonCrawl(datasets.GeneratorBasedBuilder): | |
| BUILDER_CONFIG_CLASS = CommonCrawlConfig | |
| BUILDER_CONFIGS = [ | |
| CommonCrawlConfig(name=f"{i+1}", description="", features="text", data_url=url, citation="", url="", version=VERSION) | |
| for i, url in enumerate(get_common_crawl_url(URL)) | |
| ] | |
| def _info(self): | |
| return datasets.DatasetInfo( | |
| description="", | |
| features=Features( | |
| { | |
| "id": Value("int32"), | |
| "text": Value("string"), | |
| } | |
| ), | |
| supervised_keys=None, | |
| homepage="https://github.com/hkjeon13", | |
| citation="", | |
| ) | |
| def _split_generators(self, dl_manager: DownloadManager): | |
| downloaded_files = dl_manager.download_and_extract({"train": self.config.data_url}) | |
| return [SplitGenerator(Split.TRAIN, gen_kwargs={"filepath": downloaded_files["train"]})] | |
| def _generate_examples(self, filepath): | |
| logger.info("generating examples from = %s", filepath) | |
| filepath = filepath.split("::")[-1] | |
| _open = requests.get(filepath, stream=True).raw if filepath.startswith("http") else open(filepath, "rb") | |
| number = 0 | |
| for record in ArchiveIterator(_open, arc2warc=True): | |
| if record.rec_type == 'response' and record.http_headers.get_header('Content-Type') == 'text/html': | |
| text = _preprocessing(record.content_stream().read()) | |
| if text is not None: | |
| yield number, {"id": number, "text": text} | |
| number += 1 | |