def latex_math(text):
if not TEXOID_ENABLED:
return text
tree = lxml_tree.fromstring(text)
texoid = TexoidRenderer()
for latex in tree.xpath('.//latex'):
result = texoid.get_result(latex.text)
if not result:
tag = html.Element('pre')
tag.text = 'LaTeX rendering error\n' + latex.text
elif 'error' not in result:
img = html.Element('img')
img.set('src', result['svg'])
img.set('onerror', "this.src='%s';this.onerror=null" % result['png'])
ident = result['meta']
img.set('width', ident['width'])
img.set('height', ident['height'])
style = []
if 'inline' not in latex.attrib:
tag = html.Element('div')
style += ['text-align: center']
else:
tag = html.Element('span')
style += ['max-width: 100%', 'height: %s' % ident['height'],
'max-height: %s' % ident['height'], 'width: %s' % ident['height']]
tag.set('style', ';'.join(style))
tag.append(img)
else:
tag = html.Element('pre')
tag.text = result['error']
latex.getparent().replace(latex, tag)
return tree
def latex_math(text):
if not TEXOID_ENABLED:
return text
tree = lxml_tree.fromstring(text)
texoid = TexoidRenderer()
for latex in tree.xpath('.//latex'):
result = texoid.get_result(latex.text)
if not result:
tag = html.Element('pre')
tag.text = 'LaTeX rendering error\n' + latex.text
elif 'error' not in result:
img = html.Element('img')
img.set('src', result['svg'])
img.set('onerror',
"this.src='%s';this.onerror=null" % result['png'])
ident = result['meta']
img.set('width', ident['width'])
img.set('height', ident['height'])
style = []
if 'inline' not in latex.attrib:
tag = html.Element('div')
style += ['text-align: center']
else:
tag = html.Element('span')
style += [
'max-width: 100%',
'height: %s' % ident['height'],
'max-height: %s' % ident['height'],
'width: %s' % ident['height']
]
tag.set('style', ';'.join(style))
tag.append(img)
else:
tag = html.Element('pre')
tag.text = result['error']
latex.getparent().replace(latex, tag)
return tree
class AwesomeRenderer(MathRenderer, mistune.Renderer):
def __init__(self, *args, **kwargs):
self.nofollow = kwargs.pop('nofollow', True)
self.texoid = TexoidRenderer() if kwargs.pop('texoid', False) else None
self.parser = HTMLParser()
super(AwesomeRenderer, self).__init__(*args, **kwargs)
def _link_rel(self, href):
if href:
try:
url = urlparse(href)
except ValueError:
return ' rel="nofollow"'
else:
if url.netloc and url.netloc not in NOFOLLOW_WHITELIST:
return ' rel="nofollow"'
return ''
def autolink(self, link, is_email=False):
text = link = mistune.escape(link)
if is_email:
link = 'mailto:%s' % link
return '<a href="%s"%s>%s</a>' % (link, self._link_rel(link), text)
def link(self, link, title, text):
link = mistune.escape_link(link)
if not title:
return '<a href="%s"%s>%s</a>' % (link, self._link_rel(link), text)
title = mistune.escape(title, quote=True)
return '<a href="%s" title="%s"%s>%s</a>' % (link, title, self._link_rel(link), text)
def block_code(self, code, lang=None):
if not lang:
return '\n<pre><code>%s</code></pre>\n' % mistune.escape(code).rstrip()
return highlight_code(code, lang)
def block_html(self, html):
if self.texoid and html.startswith('<latex'):
attr = html[6:html.index('>')]
latex = html[html.index('>') + 1:html.rindex('<')]
latex = self.parser.unescape(latex)
result = self.texoid.get_result(latex)
if not result:
return '<pre>%s</pre>' % mistune.escape(latex, smart_amp=False)
elif 'error' not in result:
img = ('''<img src="%(svg)s" onerror="this.src='%(png)s';this.onerror=null"'''
'width="%(width)s" height="%(height)s"%(tail)s>') % {
'svg': result['svg'], 'png': result['png'],
'width': result['meta']['width'], 'height': result['meta']['height'],
'tail': ' /' if self.options.get('use_xhtml') else ''
}
style = ['max-width: 100%',
'height: %s' % result['meta']['height'],
'max-height: %s' % result['meta']['height'],
'width: %s' % result['meta']['height']]
if 'inline' in attr:
tag = 'span'
else:
tag = 'div'
style += ['text-align: center']
return '<%s style="%s">%s</%s>' % (tag, ';'.join(style), img, tag)
else:
return '<pre>%s</pre>' % mistune.escape(result['error'], smart_amp=False)
return super(AwesomeRenderer, self).block_html(html)
def header(self, text, level, *args, **kwargs):
return super(AwesomeRenderer, self).header(text, level + 2, *args, **kwargs)