Add swappable CSS for HTML previews.
[librarian.git] / librarian / embeds / mathml.py
1 # -*- coding: utf-8 -*-
2 from __future__ import unicode_literals
3
4 from lxml import etree
5 import six
6 from librarian import get_resource
7 from . import TreeEmbed, create_embed, downgrades_to
8
9
10 class MathML(TreeEmbed):
11     @downgrades_to('application/x-latex')
12     def to_latex(self):
13         xslt = etree.parse(get_resource('res/embeds/mathml/mathml2latex.xslt'))
14         output = self.tree.xslt(xslt)
15         return create_embed('application/x-latex', data=six.text_type(output))