#!/usr/bin/python2.4
import cgi,sys,urllib
import fromIcal,XMLWriter,codecs
from string import lower
import warnings

def main():
	form = cgi.FieldStorage()

	if(form.has_key("ical")):

		print "Content-Type: application/rdf+xml\n\n"

		charset = 'iso8859-1'
		url = form["ical"].value
		up = urllib.urlopen(url)

		info = up.info()

		if(info.has_key("Content-Type")):
			ct = info["Content-Type"]
			sp = ct.split(";")
			if(len(sp) > 1):
				crs = sp[1].split("=")
				if(len(crs) == 2 and lower(crs[1]) != 'iso8859-1'):
					charset = lower(crs[1])	

		ical = codecs.EncodedFile(up,charset)
		sx = XMLWriter.T(codecs.getwriter('utf-8')(sys.stdout))
		fromIcal.interpret(sx, ical, url, ['X-'])
	
	else:
		print 'Location: %s' % "http://torrez.us/ics2rdf/"
		print
		sys.exit()

if (__name__ == "__main__"):
	warnings.filterwarnings(action ='ignore', 
			message='.*unexpected param.*', 
			category=UserWarning)
	sys.stderr = sys.stdout 
	main()