# -*- coding: UTF-8 -*-

"""Tap code - Tap/knock code encoding.

This codec:

- en/decodes strings from str to str

- en/decodes strings from bytes to bytes

- decodes file content to str (read)

- encodes file content from str to bytes (write)

"""

from ..__common__ import *

__examples__ = {

'enc(tap|knock-code|tap_code)': {'this is a test' : ".... ....⠀.. ...⠀.. ....⠀.... ...⠀ ⠀.. ....⠀.... ...⠀ ⠀. ."

"⠀ ⠀.... ....⠀. .....⠀.... ...⠀.... ...."},

}

__guess__ = ["tap", "tap-inv"]

def __build_encmap(a):

d, i = {}, 0

for x in range(1,6):

for y in range(1,6):

d[a[i]] = x * "." + " " + y * "."

i += 1

d['k'], d[' '] = d['c'], " "

return d

ENCMAP = {

'': __build_encmap("abcdefghijlmnopqrstuvwxyz"),

'inv': __build_encmap("abcdefghijlmnopqrstuvwxyz"[::-1]),

}

add_map("tap", ENCMAP, ignore_case="both", sep="⠀", pattern=r"^(?:tap|knock)(?:[-_]code)?(|inv)$")