#!/usr/local/bin/python -u import cgi import cgitb import os import string import sys import time import urllib import xml.dom.minidom cgitb.enable() pageheader = '''\ Content-type: text/html livejournal foaf to opml ''' footer = '''\

— Faried Nawaz (fn@hungry.com)
(garbage collection for the masses!)

''' class MyUrlOpener(urllib.FancyURLopener): """Subclassed FancyURLopener to generate a version string.""" def __init__(self, *args): self.version = 'http://www.hungry.com/~fn/; fn@hungry.org' urllib.FancyURLopener.__init__(self, *args) def toOPML(items, lj, auth): """Take parsed XML FOAF entries and display an OPML file.""" if auth: appendToUrl = 'data/atom?auth=digest' else: appendToUrl = 'data/atom' # items[0] is us. skip it. items = items[1:] opml = ['''\ %s\'s friends on livejournal %s ''' % (lj, time.strftime("%a, %d %b %Y %H:%M:%S GMT", time.gmtime()))] opml.append('') for item in items: text = item.getElementsByTagName('foaf:nick')[0].childNodes[0].data url = item.getElementsByTagName('foaf:weblog')[0].getAttribute('rdf:resource') feed = url + appendToUrl descr = '%s\'s feed' % (text) opml.append('''\ ''' % (descr, url, text, feed)) opml.append('') print 'Content-type: application/x.opml+xml' print 'Content-Disposition: attachment; filename=lj-%s.opml' % (lj) print '' print string.join(opml, '') def getFoafData(form): """Grab FOAF data from LiveJournal's site.""" if not form.has_key('lj'): return showMainPage(form, err='Missing username.') lj = form['lj'].value if form.has_key('auth'): auth = 1 else: auth = None urllib._urlopener = MyUrlOpener() try: data = urllib.urlopen('http://www.livejournal.com/users/%s/data/foaf' % (lj)) except: return showMainPage(form, err='An error occurred while trying to retrieve %s.' % (url)) try: parser = xml.dom.minidom.parse(data) except: return showMainPage(form, err='I couldn\'t parse the FOAF for %s.' % (lj)) people = parser.getElementsByTagName('foaf:Person') toOPML(people, lj, auth) def showSource(): """Display the source code for this app.""" print 'Content-type: text/plain' print '' f = file('foaf.cgi', 'r') for line in f.readlines(): sys.stdout.write(line) f.close() def showForm(form): """Display the entry form.""" me = os.environ.get('SCRIPT_URL', '') if form.has_key('lj'): lj = form['lj'].value else: lj = '' if form.has_key('auth'): checked = 'checked="checked"' else: checked = '' print '''\

livejournal username: generate with auth links or show me the source.

''' % (lj, checked, me) def showMainPage(form, err=None): """The site page.""" print pageheader print '

LiveJournal FOAF to OPML

' if err: print '

%s

' % (err) showForm(form) print '''

This app reads your foaf data from LiveJournal and converts it into an OPML file suitable for use with a feed aggregator. The foaf data contains a list of all your LiveJournal friends.

If you check the auth checkbox, the OPML file will contain links that will let you read private (friends only) messages. Not all feed aggregators support this feature — check with your product documentation.

''' print footer def main(): """Main branching logic.""" form = cgi.FieldStorage() if form.has_key('foaf'): getFoafData(form) elif form.has_key('source'): showSource() else: showMainPage(form) sys.exit(0) if __name__ == '__main__': main()