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|
"""A more liberal autolinker
Inspired by Django's urlize function.
Positive examples:
>>> import markdown
>>> md = markdown.Markdown(extensions=['urlize'])
>>> md.convert('http://example.com/')
u'<p><a href="http://example.com/">http://example.com/</a></p>'
>>> md.convert('go to http://example.com')
u'<p>go to <a href="http://example.com">http://example.com</a></p>'
>>> md.convert('example.com')
u'<p><a href="http://example.com">example.com</a></p>'
>>> md.convert('example.net')
u'<p><a href="http://example.net">example.net</a></p>'
>>> md.convert('www.example.us')
u'<p><a href="http://www.example.us">www.example.us</a></p>'
>>> md.convert('(www.example.us/path/?name=val)')
u'<p>(<a href="http://www.example.us/path/?name=val">www.example.us/path/?name=val</a>)</p>'
>>> md.convert('go to <http://example.com> now!')
u'<p>go to <a href="http://example.com">http://example.com</a> now!</p>'
Negative examples:
>>> md.convert('del.icio.us')
u'<p>del.icio.us</p>'
"""
import markdown
# Global Vars
URLIZE_RE = '(%s)' % '|'.join([
r'<(?:f|ht)tps?://[^>]*>',
r'\b(?:f|ht)tps?://[^)<>\s]+[^.,)<>\s]',
r'\bwww\.[^)<>\s]+[^.,)<>\s]',
r'[^(<\s]+\.(?:com|net|org)\b',
])
class UrlizePattern(markdown.inlinepatterns.Pattern):
""" Return a link Element given an autolink (`http://example/com`). """
def handleMatch(self, m):
url = m.group(2)
if url.startswith('<'):
url = url[1:-1]
text = url
if not url.split('://')[0] in ('http','https','ftp'):
if '@' in url and not '/' in url:
url = 'mailto:' + url
else:
url = 'http://' + url
el = markdown.util.etree.Element("a")
el.set('href', url)
el.text = markdown.util.AtomicString(text)
return el
class UrlizeExtension(markdown.Extension):
""" Urlize Extension for Python-Markdown. """
def extendMarkdown(self, md, md_globals):
""" Replace autolink with UrlizePattern """
md.inlinePatterns['autolink'] = UrlizePattern(URLIZE_RE, md)
def makeExtension(configs=None):
return UrlizeExtension(configs=configs)
if __name__ == "__main__":
import doctest
doctest.testmod()
|
