#!/usr/bin/python3
# beat - print current time in Swatch Internet Time format.
# blame fizzie
import math,sys,getopt,time
prec = 0
atime = None
opts,args = getopt.getopt(sys.argv[1:], "d:hpP:")
for opt,oarg in opts:
	if "-d" == opt:
		if "@" == oarg[0]:
			atime = float(oarg[1:])
		else:
			raise RuntimeError("unknown date format")
	elif "-p" == opt: prec = 2
	elif "-P" == opt: prec = int(oarg)
	elif "-h" == opt: 
		print("Usage: beat [-p]\nPrint current time in Swatch Internet Time format.\n")
		sys.exit(2)
	else: raise AssertionError()
if args:
	raise RuntimeError("too many command-line arguments")
if atime is None:
	atime = time.time()
b = math.floor(((atime + 3600) % 86400) / 86.4 * 10**prec)
o = "%0*d" % (prec, b)
if 0 < prec: o = o[0:-prec] + "." + o[-prec:]
print(o)
#END