from elementtree.ElementTree import ElementTree
from urllib import urlopen
from os import execlp

# URL of the CAP file to read. Modify this line to represent the state you want CAP alerts from.
capurl = 'http://www.nws.noaa.gov/alerts/tx.cap'
# FIPS Geocode for your area as it appears in the CAP file
# As a string, not a number! This does a string compare against the CAP file
# Usually will be 0 + state code + county code
# http://www.itl.nist.gov/fipspubs/co-codes/states.htm
geocode = '048111'
# The event type you want to get an alert for.
event = 'Flood Warning'

# This is the CAP XML Namespace
cns = '{http://www.incident.com/cap/1.0}'

cap = ElementTree(file = urlopen(capurl))
allalerts = cap.getroot().findall(cns+'info')
# print("Alerts obtained")
# alerts = [a for a in allalerts if a.findtext(cns+'area/'+cns+'geocode') == geocode]
alerts = [a for a in allalerts if (a.findtext(cns+'event') == event) & (a.findtext(cns+'area/'+cns+'geocode') == geocode)]

for alert in alerts:
    headline = alert.findtext(cns+'event')
    if headline:
        headline = headline.strip()
#        execlp('mythtvosd', 'mythtvosd', '--template=alert', '--alert_text="%s"' % headline)
#        print("%s" % headline)
#        print("ALERTS Printed")
        execlp('mythtvosd', 'mythtvosd', '--template=scroller', '--scroll_text="%s"' % headline)