66 lines
2.3 KiB
Python
66 lines
2.3 KiB
Python
from __future__ import absolute_import
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from __future__ import unicode_literals
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from markdown import Extension
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from markdown.inlinepatterns import Pattern
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from markdown.util import etree
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import re
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def build_url(label, base, end):
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""" Build a url from the label, a base, and an end. """
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clean_label = re.sub(r'([ ]+_)|(_[ ]+)|([ ]+)', '_', label)
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return '%s%s%s'% (base, clean_label, end)
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class WikiLinkExtension(Extension):
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def __init__(self, configs):
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# set extension defaults
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self.config = {
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'base_url' : ['/', 'String to append to beginning or URL.'],
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'end_url' : ['/', 'String to append to end of URL.'],
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'html_class' : ['wikilink', 'CSS hook. Leave blank for none.'],
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'build_url' : [build_url, 'Callable formats URL from label.'],
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}
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configs = dict(configs) or {}
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# Override defaults with user settings
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for key, value in configs.items():
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self.setConfig(key, value)
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def extendMarkdown(self, md, md_globals):
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self.md = md
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# append to end of inline patterns
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WIKILINK_RE = r'\[\[([\w0-9_ -]+)(\|[\w0-9_ -]+)?\]\]'
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wikilinkPattern = WikiLinks(WIKILINK_RE, self.getConfigs())
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wikilinkPattern.md = md
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md.inlinePatterns.add('wikilink', wikilinkPattern, "<not_strong")
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class WikiLinks(Pattern):
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def __init__(self, pattern, config):
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super(WikiLinks, self).__init__(pattern)
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self.config = config
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def handleMatch(self, m):
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base_url, end_url, html_class = self._getMeta()
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label = m.group(2).strip()
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url = self.config['build_url'](label, base_url, end_url)
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if m.group(3):
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title = m.group(3).strip()[1:]
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else:
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title = label
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a = etree.Element('a')
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a.text = title
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a.set('href', url)
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if html_class:
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a.set('class', html_class)
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return a
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def _getMeta(self):
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""" Return meta data or config data. """
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base_url = self.config['base_url']
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end_url = self.config['end_url']
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html_class = self.config['html_class']
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return base_url, end_url, html_class
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