00af109e2f
* add flake8 to pre-commit config, and fixup many things to make flake8 happy * add isort and sort all imports, add to pre-commit and requirements
34 lines
1 KiB
Python
34 lines
1 KiB
Python
import bleach
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import commonmark
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from django import template
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from django.template.defaultfilters import stringfilter
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from django.utils.safestring import mark_safe
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register = template.Library()
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def parse_commonmark(value):
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parser = commonmark.Parser()
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renderer = commonmark.HtmlRenderer()
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ast = parser.parse(value)
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return renderer.render(ast)
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@register.filter(is_safe=True)
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@stringfilter
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def trustedcommonmark(value):
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"""Returns HTML given some commonmark Markdown. Also allows real HTML, so do not use this with untrusted input."""
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markdown = parse_commonmark(value)
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result = bleach.linkify(markdown, parse_email=True)
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return mark_safe(result)
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@register.filter(is_safe=True)
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@stringfilter
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def untrustedcommonmark(value):
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"""Returns HTML given some commonmark Markdown. Cleans actual HTML from input using bleach, suitable for use with untrusted input."""
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cleaned = bleach.clean(value)
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markdown = parse_commonmark(cleaned)
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result = bleach.linkify(markdown, parse_email=True)
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return mark_safe(result)
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