2020-01-21 06:35:58 +00:00
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from .. import registry
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2022-10-25 04:59:04 +00:00
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import markdown as _markdown
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import bleach
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from django.utils.html import escape
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2022-10-29 06:25:22 +00:00
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from bs4 import BeautifulSoup
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2020-01-21 06:35:58 +00:00
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2022-10-25 04:59:04 +00:00
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EXTENSIONS = [
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"pymdownx.magiclink",
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2022-10-25 23:07:45 +00:00
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"pymdownx.betterem",
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2022-10-25 04:59:04 +00:00
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"pymdownx.details",
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"pymdownx.emoji",
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"pymdownx.inlinehilite",
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"pymdownx.superfences",
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"pymdownx.tasklist",
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"markdown.extensions.footnotes",
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"markdown.extensions.attr_list",
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"markdown.extensions.def_list",
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"markdown.extensions.tables",
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"markdown.extensions.admonition",
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2022-10-25 23:10:33 +00:00
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"nl2br",
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2022-10-29 04:28:31 +00:00
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"mdx_breakless_lists",
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2022-10-25 04:59:04 +00:00
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]
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2020-01-21 06:35:58 +00:00
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2022-10-25 23:07:45 +00:00
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ALLOWED_TAGS = bleach.sanitizer.ALLOWED_TAGS + [
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"img",
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"center",
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"iframe",
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"div",
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"span",
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"table",
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"tr",
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"td",
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"th",
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"tr",
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"pre",
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"code",
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"p",
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"hr",
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"h1",
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"h2",
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"h3",
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"h4",
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"h5",
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"h6",
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"thead",
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"tbody",
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"sup",
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"dl",
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"dt",
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"dd",
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2022-10-25 23:12:28 +00:00
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"br",
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2022-10-26 01:23:11 +00:00
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"details",
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2022-10-26 06:11:37 +00:00
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"summary",
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2022-10-25 23:07:45 +00:00
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]
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2020-01-21 06:35:58 +00:00
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2022-10-26 01:26:49 +00:00
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ALLOWED_ATTRS = ["src", "width", "height", "href", "class", "open"]
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2022-07-30 10:21:08 +00:00
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2022-07-30 14:01:37 +00:00
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2020-01-21 06:35:58 +00:00
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@registry.filter
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2022-10-29 06:25:22 +00:00
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def markdown(value, lazy_load=False):
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2022-10-25 04:59:04 +00:00
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extensions = EXTENSIONS
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2022-10-25 23:07:45 +00:00
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html = _markdown.markdown(value, extensions=extensions)
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html = bleach.clean(html, tags=ALLOWED_TAGS, attributes=ALLOWED_ATTRS)
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2022-10-25 04:59:04 +00:00
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if not html:
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html = escape(value)
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2022-10-29 06:25:22 +00:00
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if lazy_load:
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soup = BeautifulSoup(html, features="lxml")
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for img in soup.findAll("img"):
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img["data-src"] = img["src"]
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img["src"] = ""
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html = str(soup)
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2022-10-25 04:59:04 +00:00
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return '<div class="md-typeset">%s</div>' % html
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