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# -*- coding: utf-8 -*-
"""
sphinx.ext.jsmath
~~~~~~~~~~~~~~~~~
Set up everything for use of JSMath to display math in HTML
via JavaScript.
:copyright: Copyright 2007-2018 by the Sphinx team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
from docutils import nodes
import sphinx
from sphinx.errors import ExtensionError
from sphinx.ext.mathbase import get_node_equation_number
from sphinx.ext.mathbase import setup_math as mathbase_setup
from sphinx.locale import _
if False:
# For type annotation
from typing import Any, Dict # NOQA
from sphinx.application import Sphinx # NOQA
def html_visit_math(self, node):
# type: (nodes.NodeVisitor, nodes.Node) -> None
self.body.append(self.starttag(node, 'span', '', CLASS='math notranslate'))
self.body.append(self.encode(node['latex']) + '</span>')
raise nodes.SkipNode
def html_visit_displaymath(self, node):
# type: (nodes.NodeVisitor, nodes.Node) -> None
if node['nowrap']:
self.body.append(self.starttag(node, 'div', CLASS='math notranslate'))
self.body.append(self.encode(node['latex']))
self.body.append('</div>')
raise nodes.SkipNode
for i, part in enumerate(node['latex'].split('\n\n')):
part = self.encode(part)
if i == 0:
# necessary to e.g. set the id property correctly
if node['number']:
number = get_node_equation_number(self, node)
self.body.append('<span class="eqno">(%s)' % number)
self.add_permalink_ref(node, _('Permalink to this equation'))
self.body.append('</span>')
self.body.append(self.starttag(node, 'div', CLASS='math notranslate'))
else:
# but only once!
self.body.append('<div class="math">')
if '&' in part or '\\\\' in part:
self.body.append('\\begin{split}' + part + '\\end{split}')
else:
self.body.append(part)
self.body.append('</div>\n')
raise nodes.SkipNode
def builder_inited(app):
# type: (Sphinx) -> None
if not app.config.jsmath_path:
raise ExtensionError('jsmath_path config value must be set for the '
'jsmath extension to work')
app.add_javascript(app.config.jsmath_path)
def setup(app):
# type: (Sphinx) -> Dict[unicode, Any]
try:
mathbase_setup(app, (html_visit_math, None), (html_visit_displaymath, None))
except ExtensionError:
raise ExtensionError('sphinx.ext.jsmath: other math package is already loaded')
app.add_config_value('jsmath_path', '', False)
app.connect('builder-inited', builder_inited)
return {'version': sphinx.__display_version__, 'parallel_read_safe': True}
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