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| -rw-r--r-- | markdown_extensions/wikilinks.py | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/markdown_extensions/wikilinks.py b/markdown_extensions/wikilinks.py new file mode 100644 index 0000000..637b87c --- /dev/null +++ b/markdown_extensions/wikilinks.py @@ -0,0 +1,139 @@ +#!/usr/bin/env python + +''' +WikiLinks Extension for Python-Markdown +====================================== + +Converts [[WikiLinks]] to relative links. Requires Python-Markdown 2.0+ + +Basic usage: + + >>> import markdown + >>> text = "Some text with a [[WikiLink]]." + >>> html = markdown.markdown(text, ['wikilinks']) + >>> html + u'<p>Some text with a <a href="/WikiLink/" class="wikilink">WikiLink</a>.</p>' + +Whitespace behavior: + + >>> markdown.markdown('[[ foo bar_baz ]]', ['wikilinks']) + u'<p><a class="wikilink" href="/foo_bar_baz/">foo bar_baz</a></p>' + >>> markdown.markdown('foo [[ ]] bar', ['wikilinks']) + u'<p>foo bar</p>' + +To define custom settings the simple way: + + >>> markdown.markdown(text, + ... ['wikilinks(base_url=/wiki/,end_url=.html,html_class=foo)'] + ... ) + u'<p>Some text with a <a href="/wiki/WikiLink.html" class="foo">WikiLink</a>.</p>' + +Custom settings the complex way: + + >>> md = markdown.Markdown( + ... extensions = ['wikilinks'], + ... extension_configs = {'wikilinks': [ + ... ('base_url', 'http://example.com/'), + ... ('end_url', '.html'), + ... ('html_class', '') ]}, + ... safe_mode = True) + >>> md.convert(text) + u'<p>Some text with a <a href="http://example.com/WikiLink.html">WikiLink</a>.</p>' + +Use MetaData with mdx_meta.py (Note the blank html_class in MetaData): + + >>> text = """wiki_base_url: http://example.com/ + ... wiki_end_url: .html + ... wiki_html_class: + ... + ... Some text with a WikiLink.""" + >>> md = markdown.Markdown(extensions=['meta', 'wikilinks']) + >>> md.convert(text) + u'<p>Some text with a <a href="http://example.com/WikiLink.html">WikiLink</a>.</p>' + +MetaData should not carry over to next document: + + >>> md.convert("No [[MetaData]] here.") + u'<p>No <a href="/MetaData/" class="wikilink">MetaData</a> here.</p>' + +From the command line: + + python markdown.py -x wikilinks(base_url=http://example.com/,end_url=.html,html_class=foo) src.txt + +By [Waylan Limberg](http://achinghead.com/). + +License: [BSD](http://www.opensource.org/licenses/bsd-license.php) + +Dependencies: +* [Python 2.3+](http://python.org) +* [Markdown 2.0+](http://www.freewisdom.org/projects/python-markdown/) +''' + +import markdown + +class WikiLinkExtension (markdown.Extension) : + def __init__(self, configs): + # set extension defaults + 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.'] + } + + # Override defaults with user settings + for key, value in configs : + self.setConfig(key, value) + + def extendMarkdown(self, md, md_globals): + self.md = md + + # append to end of inline patterns + WIKILINK_RE = r'\[\[([^\]]+)\]\]' + #r'''(?P<escape>\\|\b)(?P<camelcase>([A-Z]+[a-z-_]+){2,})\b''' + WIKILINK_PATTERN = WikiLinks(WIKILINK_RE, self.config) + WIKILINK_PATTERN.md = md + md.inlinePatterns.append(WIKILINK_PATTERN) + + +class WikiLinks (markdown.BasePattern) : + def __init__(self, pattern, config): + markdown.BasePattern.__init__(self, 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 = '%s%s%s'% (base_url, label.replace(' ', '_'), end_url) + a = markdown.etree.Element('a') + a.text = markdown.AtomicString(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'][0] + end_url = self.config['end_url'][0] + html_class = self.config['html_class'][0] + if hasattr(self.md, 'Meta'): + if self.md.Meta.has_key('wiki_base_url'): + base_url = self.md.Meta['wiki_base_url'][0] + if self.md.Meta.has_key('wiki_end_url'): + end_url = self.md.Meta['wiki_end_url'][0] + if self.md.Meta.has_key('wiki_html_class'): + html_class = self.md.Meta['wiki_html_class'][0] + return base_url, end_url, html_class + + +def makeExtension(configs=None) : + return WikiLinkExtension(configs=configs) + + +if __name__ == "__main__": + import doctest + doctest.testmod() + |