forked from github/pelican
134 lines
4.1 KiB
Python
134 lines
4.1 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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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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if ('linenos' in self.options and
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self.options['linenos'] not in ('table', 'inline')):
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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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class YouTube(Directive):
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""" Embed YouTube video in posts.
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Courtesy of Brian Hsu: https://gist.github.com/1422773
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VIDEO_ID is required, with / height are optional integer,
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and align could be left / center / right.
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Usage:
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.. youtube:: VIDEO_ID
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:width: 640
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:height: 480
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:align: center
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"""
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def align(argument):
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"""Conversion function for the "align" option."""
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return directives.choice(argument, ('left', 'center', 'right'))
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required_arguments = 1
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optional_arguments = 2
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option_spec = {
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'width': directives.positive_int,
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'height': directives.positive_int,
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'align': align
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}
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final_argument_whitespace = False
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has_content = False
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def run(self):
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videoID = self.arguments[0].strip()
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width = 420
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height = 315
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align = 'left'
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if 'width' in self.options:
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width = self.options['width']
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if 'height' in self.options:
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height = self.options['height']
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if 'align' in self.options:
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align = self.options['align']
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url = 'http://www.youtube.com/embed/%s' % videoID
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div_block = '<div class="youtube" align="%s">' % align
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embed_block = '<iframe width="%s" height="%s" src="%s" '\
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'frameborder="0"></iframe>' % (width, height, url)
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return [
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nodes.raw('', div_block, format='html'),
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nodes.raw('', embed_block, format='html'),
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nodes.raw('', '</div>', format='html')]
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directives.register_directive('youtube', YouTube)
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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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