# Hides values as invisible spaces in strings
# Usage: ht.py e string to encode
# or: ht.py d string to decode (remove formatting)

from random import randint
import sys, re

inv_str = [ u"\uFEFF", u"\uFE00" ]
#inv_str = [ "{TEST}", "{HI}", "{BYE}" ]

def encode(str):
	strList = str.split(' ')
	for i in range(len(strList)):
		s = strList[i]
		if len(s) < 3:
			continue
		pos = randint(1, len(s) - 1)
		inv = inv_str[randint(0, len(inv_str) - 1)]
		strList[i] = s[:pos] + inv + s[pos:]
	return ' '.join(strList)

def decode(str):
	for inv in inv_str:
		str = re.sub(re.escape(inv), '', str)
	return str

if sys.argv[1] == 'e':
	print encode(' '.join(sys.argv[2:]))
elif sys.argv[1] == 'd':
	print decode(' '.join(sys.argv[2:]))