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20 lines
694 B
Python
20 lines
694 B
Python
import cgi
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from zerver.lib.url_preview.types import UrlEmbedData
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class BaseParser:
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def __init__(self, html_source: bytes, content_type: str | None) -> None:
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# We import BeautifulSoup here, because it's not used by most
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# processes in production, and bs4 is big enough that
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# importing it adds 10s of milliseconds to manage.py startup.
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from bs4 import BeautifulSoup
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charset = None
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if content_type is not None:
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charset = cgi.parse_header(content_type)[1].get("charset")
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self._soup = BeautifulSoup(html_source, "lxml", from_encoding=charset)
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def extract_data(self) -> UrlEmbedData:
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raise NotImplementedError
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