| ''' |
| WikiLinks Extension for Python-Markdown |
| ====================================== |
| |
| Converts [[WikiLinks]] to relative links. |
| |
| See <https://pythonhosted.org/Markdown/extensions/wikilinks.html> |
| for documentation. |
| |
| Original code Copyright [Waylan Limberg](http://achinghead.com/). |
| |
| All changes Copyright The Python Markdown Project |
| |
| License: [BSD](http://www.opensource.org/licenses/bsd-license.php) |
| |
| ''' |
| |
| from __future__ import absolute_import |
| from __future__ import unicode_literals |
| from . import Extension |
| from ..inlinepatterns import Pattern |
| from ..util import etree |
| import re |
| |
| |
| def build_url(label, base, end): |
| """ Build a url from the label, a base, and an end. """ |
| clean_label = re.sub(r'([ ]+_)|(_[ ]+)|([ ]+)', '_', label) |
| return '%s%s%s' % (base, clean_label, end) |
| |
| |
| class WikiLinkExtension(Extension): |
| |
| def __init__(self, *args, **kwargs): |
| self.config = { |
| 'base_url': ['/', 'String to append to beginning or URL.'], |
| 'end_url': ['/', 'String to append to end of URL.'], |
| 'html_class': ['wikilink', 'CSS hook. Leave blank for none.'], |
| 'build_url': [build_url, 'Callable formats URL from label.'], |
| } |
| |
| super(WikiLinkExtension, self).__init__(*args, **kwargs) |
| |
| def extendMarkdown(self, md, md_globals): |
| self.md = md |
| |
| # append to end of inline patterns |
| WIKILINK_RE = r'\[\[([\w0-9_ -]+)\]\]' |
| wikilinkPattern = WikiLinks(WIKILINK_RE, self.getConfigs()) |
| wikilinkPattern.md = md |
| md.inlinePatterns.add('wikilink', wikilinkPattern, "<not_strong") |
| |
| |
| class WikiLinks(Pattern): |
| def __init__(self, pattern, config): |
| super(WikiLinks, self).__init__(pattern) |
| self.config = config |
| |
| def handleMatch(self, m): |
| if m.group(2).strip(): |
| base_url, end_url, html_class = self._getMeta() |
| label = m.group(2).strip() |
| url = self.config['build_url'](label, base_url, end_url) |
| a = etree.Element('a') |
| a.text = label |
| a.set('href', url) |
| if html_class: |
| a.set('class', html_class) |
| else: |
| a = '' |
| return a |
| |
| def _getMeta(self): |
| """ Return meta data or config data. """ |
| base_url = self.config['base_url'] |
| end_url = self.config['end_url'] |
| html_class = self.config['html_class'] |
| if hasattr(self.md, 'Meta'): |
| if 'wiki_base_url' in self.md.Meta: |
| base_url = self.md.Meta['wiki_base_url'][0] |
| if 'wiki_end_url' in self.md.Meta: |
| end_url = self.md.Meta['wiki_end_url'][0] |
| if 'wiki_html_class' in self.md.Meta: |
| html_class = self.md.Meta['wiki_html_class'][0] |
| return base_url, end_url, html_class |
| |
| |
| def makeExtension(*args, **kwargs): |
| return WikiLinkExtension(*args, **kwargs) |