forked from github/pelican
60 lines
1.8 KiB
Python
60 lines
1.8 KiB
Python
# -*- coding: utf-8 -*-
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from __future__ import unicode_literals, print_function
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from docutils import nodes, utils
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from docutils.parsers.rst import directives, roles, Directive
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from pygments.formatters import HtmlFormatter
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from pygments import highlight
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from pygments.lexers import get_lexer_by_name, TextLexer
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import re
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INLINESTYLES = False
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DEFAULT = HtmlFormatter(noclasses=INLINESTYLES)
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VARIANTS = {
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'linenos': HtmlFormatter(noclasses=INLINESTYLES, linenos=True),
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}
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class Pygments(Directive):
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""" Source code syntax hightlighting.
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"""
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required_arguments = 1
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optional_arguments = 0
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final_argument_whitespace = True
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option_spec = dict([(key, directives.flag) for key in VARIANTS])
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has_content = True
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def run(self):
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self.assert_has_content()
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try:
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lexer = get_lexer_by_name(self.arguments[0])
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except ValueError:
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# no lexer found - use the text one instead of an exception
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lexer = TextLexer()
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# take an arbitrary option if more than one is given
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formatter = self.options and VARIANTS[self.options.keys()[0]] \
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or DEFAULT
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parsed = highlight('\n'.join(self.content), lexer, formatter)
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return [nodes.raw('', parsed, format='html')]
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directives.register_directive('code-block', Pygments)
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directives.register_directive('sourcecode', Pygments)
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_abbr_re = re.compile('\((.*)\)$')
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class abbreviation(nodes.Inline, nodes.TextElement):
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pass
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def abbr_role(typ, rawtext, text, lineno, inliner, options={}, content=[]):
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text = utils.unescape(text)
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m = _abbr_re.search(text)
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if m is None:
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return [abbreviation(text, text)], []
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abbr = text[:m.start()].strip()
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expl = m.group(1)
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return [abbreviation(abbr, abbr, explanation=expl)], []
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roles.register_local_role('abbr', abbr_role)
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