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91 lines
2.9 KiB
91 lines
2.9 KiB
7 days ago
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import re
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from docutils import nodes, utils
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from docutils.parsers.rst import Directive, directives, roles
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from pygments import highlight
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from pygments.formatters import HtmlFormatter
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from pygments.lexers import TextLexer, get_lexer_by_name
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import pelican.settings as pys
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class Pygments(Directive):
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""" Source code syntax highlighting.
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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 = {
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'anchorlinenos': directives.flag,
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'classprefix': directives.unchanged,
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'hl_lines': directives.unchanged,
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'lineanchors': directives.unchanged,
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'linenos': directives.unchanged,
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'linenospecial': directives.nonnegative_int,
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'linenostart': directives.nonnegative_int,
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'linenostep': directives.nonnegative_int,
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'lineseparator': directives.unchanged,
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'linespans': directives.unchanged,
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'nobackground': directives.flag,
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'nowrap': directives.flag,
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'tagsfile': directives.unchanged,
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'tagurlformat': directives.unchanged,
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}
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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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# Fetch the defaults
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if pys.PYGMENTS_RST_OPTIONS is not None:
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for k, v in pys.PYGMENTS_RST_OPTIONS.items():
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# Locally set options overrides the defaults
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if k not in self.options:
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self.options[k] = v
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if ('linenos' in self.options and
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self.options['linenos'] not in ('table', 'inline')):
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if self.options['linenos'] == 'none':
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self.options.pop('linenos')
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else:
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self.options['linenos'] = 'table'
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for flag in ('nowrap', 'nobackground', 'anchorlinenos'):
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if flag in self.options:
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self.options[flag] = True
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# noclasses should already default to False, but just in case...
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formatter = HtmlFormatter(noclasses=False, **self.options)
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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(r'\((.*)\)$', re.DOTALL)
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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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