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import bleach |
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from django.utils.safestring import mark_safe |
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from markdown import markdown |
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from simple_forums.utils import get_setting |
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class BaseRenderer: |
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""" Base class that all renderers are based on """ |
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def render(self, text): |
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""" Render marked up text as html """ |
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raise NotImplementedError |
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class MarkdownRenderer(BaseRenderer): |
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""" Handles rendering markdown into html """ |
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DEFAULT_EXTENSIONS = [ |
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'pymdownx.github', |
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] |
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# Attributes and tags used for rendering markdown taken from: |
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# https://github.com/yourcelf/bleach-whitelist |
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# |
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# Slightly modified |
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MARKDOWN_ATTRS = { |
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'a': ['alt', 'href', 'title'], |
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'img': ['alt', 'src', 'title'], |
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} |
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MARKDOWN_TAGS = { |
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'a', |
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'b', 'blockquote', 'br', |
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'code', |
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'dd', 'div', 'dt', |
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'em', |
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'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'hr', |
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'i', 'img', |
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'li', |
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'ol', |
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'p', |
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'span', 'strong', |
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'tt', |
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'ul', |
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} |
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@staticmethod |
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def get_extensions(): |
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""" Get a list of extensions to use """ |
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return get_setting( |
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'markdown_extensions', |
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MarkdownRenderer.DEFAULT_EXTENSIONS) |
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def render(self, text): |
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""" Convert the given text into html """ |
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converted = markdown( |
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text, |
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extensions=MarkdownRenderer.get_extensions(), |
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output_format='html5') |
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cleaned = bleach.clean( |
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converted, |
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attributes=self.MARKDOWN_ATTRS, |
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tags=self.MARKDOWN_TAGS) |
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return mark_safe(cleaned) |
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class TextRenderer(BaseRenderer): |
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""" Renders text as itself """ |
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def render(self, text): |
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""" Return the text """ |
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return text |
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smalls12 /
django_simple_forums
