def getStation(address):
  #ƒunction to take in a RIC code and return some meaningful string
  return 'Unknown'
 
f = subprocess.Popen(['tail','-F','multi.log'], stdout=subprocess.PIPE,stderr=subprocess.PIPE)
prev_address = ''
while True:
    line = f.stdout.readline()
    if not line.startswith('POCSAG512:'):
        #Skip to the next line
        continue
 
    if 'CORRUPT' in line:
        continue
 
    if 'Address' in line:
        prev_address = line.split(' ')[2]
        continue
 
    if 'Alpha' in line:
        d = datetime.datetime.now()
        nowstr = "%s/%s/%s %s:%s:%s" % (d.year,d.month,d.day,d.hour,d.minute,d.second)
        addr = getStation(prev_address)
        message = " ".join(line.split(' ')[2:])
        message = message.strip()
        if message.endswith('<NUL>'):
            message = message[:-5]
        print "%s\t%s\t%s" % (addr,nowstr,message)
        continue
 
    prev_address = ''