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97 lines
3.1 KiB
Python
97 lines
3.1 KiB
Python
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"""
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Admonition extension for Python-Markdown
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========================================
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Adds rST-style admonitions. Inspired by [rST][] feature with the same name.
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[rST]: http://docutils.sourceforge.net/docs/ref/rst/directives.html#specific-admonitions # noqa
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See <https://Python-Markdown.github.io/extensions/admonition>
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for documentation.
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Original code Copyright [Tiago Serafim](http://www.tiagoserafim.com/).
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All changes Copyright The Python Markdown Project
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License: [BSD](http://www.opensource.org/licenses/bsd-license.php)
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"""
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from __future__ import absolute_import
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from __future__ import unicode_literals
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from . import Extension
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from ..blockprocessors import BlockProcessor
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from ..util import etree
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import re
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class AdmonitionExtension(Extension):
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""" Admonition extension for Python-Markdown. """
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def extendMarkdown(self, md, md_globals):
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""" Add Admonition to Markdown instance. """
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md.registerExtension(self)
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md.parser.blockprocessors.add('admonition',
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AdmonitionProcessor(md.parser),
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'_begin')
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class AdmonitionProcessor(BlockProcessor):
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CLASSNAME = 'admonition'
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CLASSNAME_TITLE = 'admonition-title'
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RE = re.compile(r'(?:^|\n)!!! ?([\w\-]+)(?: +"(.*?)")? *(?:\n|$)')
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def test(self, parent, block):
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sibling = self.lastChild(parent)
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return self.RE.search(block) or \
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(block.startswith(' ' * self.tab_length) and sibling is not None and
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sibling.get('class', '').find(self.CLASSNAME) != -1)
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def run(self, parent, blocks):
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sibling = self.lastChild(parent)
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block = blocks.pop(0)
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m = self.RE.search(block)
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if m:
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block = block[m.end():] # removes the first line
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block, theRest = self.detab(block)
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if m:
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klass, title = self.get_class_and_title(m)
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div = etree.SubElement(parent, 'div')
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div.set('class', '%s %s' % (self.CLASSNAME, klass))
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if title:
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p = etree.SubElement(div, 'p')
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p.text = title
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p.set('class', self.CLASSNAME_TITLE)
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else:
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div = sibling
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self.parser.parseChunk(div, block)
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if theRest:
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# This block contained unindented line(s) after the first indented
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# line. Insert these lines as the first block of the master blocks
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# list for future processing.
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blocks.insert(0, theRest)
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def get_class_and_title(self, match):
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klass, title = match.group(1).lower(), match.group(2)
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if title is None:
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# no title was provided, use the capitalized classname as title
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# e.g.: `!!! note` will render
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# `<p class="admonition-title">Note</p>`
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title = klass.capitalize()
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elif title == '':
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# an explicit blank title should not be rendered
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# e.g.: `!!! warning ""` will *not* render `p` with a title
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title = None
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return klass, title
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def makeExtension(*args, **kwargs):
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return AdmonitionExtension(*args, **kwargs)
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