simple_format

<?xml version="1.0" encoding="UTF-8"?>
<rdf:RDF
   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
   xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
   xmlns:rdfe="http://redfoot.net/3.0/rdf#"
   xmlns:code="http://redfoot.net/3.0/code#"
>

  <rdfe:RDFXMLDocument rdf:about="">
  </rdfe:RDFXMLDocument>
  
  <rdfe:Namespace rdf:about="#">
    <rdfs:label>Simple Format</rdfs:label>
    <rdfs:comment>The Redfoot simple format namespace.</rdfs:comment>
  </rdfe:Namespace>

  <code:Module rdf:ID="module">
    <rdfs:label>Simple Formatter</rdfs:label>      
    <rdfs:comment>A formatter that turns uris into links.</rdfs:comment>        
    <code:python rdf:datatype="http://www.w3.org/2001/XMLSchema#string">
<![CDATA[

import re
from urllib import quote, unquote
from xml.sax.saxutils import escape

_url = re.compile(r'((http://|https://|ftp://|news://|irc://)[^\s,]+)', re.IGNORECASE)


def url(match):
    url, scheme = match.groups()
    url = URIRef(unquote(url))
    label = redfoot.label(url, url)
    return '<a href="%s">%s</a>' % (escape(url.concrete()), label)

def format(text):
    if text:
        text = re.sub(_url, url, text)
    return text or ''

def format_uri(uri, predicate=None):
    if predicate is None:
        text = uri
    else:
        text = redfoot.value(uri, predicate)
    if text:
        text = re.sub(_url, url, text)
    return text or ''


#example = """
#Perfect with http://donnafales.com/recipes/2002/07/28/
#"""
#print format(example)

]]>
    </code:python>
  </code:Module>

</rdf:RDF>