mirror of https://github.com/zulip/zulip.git
32 lines
1.1 KiB
Python
32 lines
1.1 KiB
Python
from bs4 import BeautifulSoup
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from django.http import HttpRequest
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from django.utils.html import escape
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from zerver.lib.cache import cache_with_key, open_graph_description_cache_key
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def html_to_text(content: str) -> str:
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bs = BeautifulSoup(content, features='lxml')
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# Skip any admonition (warning) blocks, since they're
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# usually something about users needing to be an
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# organization administrator, and not useful for
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# describing the page.
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for tag in bs.find_all('div', class_="admonition"):
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tag.clear()
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# Skip code-sections, which just contains navigation instructions.
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for tag in bs.find_all('div', class_="code-section"):
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tag.clear()
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text = ''
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for paragraph in bs.find_all('p'):
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# .text converts it from HTML to text
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text = text + paragraph.text + ' '
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if len(text) > 500:
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break
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return escape(' '.join(text.split()))
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@cache_with_key(open_graph_description_cache_key, timeout=3600*24)
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def get_content_description(content: bytes, request: HttpRequest) -> str:
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str_content = content.decode("utf-8")
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return html_to_text(str_content)
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