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#!/usr/bin/env python
# -*- coding: utf-8 -*-
import re
import unittest
# Define Morse code mappings
morse_code = {
".-": "A",
"-...": "B",
"-.-.": "C",
"-..": "D",
".": "E",
"..-.": "F",
"--.": "G",
"....": "H",
"..": "I",
".---": "J",
"-.-": "K",
".-..": "L",
"--": "M",
"-.": "N",
"---": "O",
".--.": "P",
"--.-": "Q",
".-.": "R",
"...": "S",
"-": "T",
"..-": "U",
"...-": "V",
".--": "W",
"-..-": "X",
"-.--": "Y",
"--..": "Z",
"/": " ",
}
# Decode binary encoded Morse code
def decode_morse(encoded):
# Split encoded text into words and characters
words = re.findall("0{7}", encoded + "0000000")
letters = [re.findall("0{3}", word + "000") for word in words]
# Convert Morse code to plaintext
plaintext = ""
for word in letters:
for letter in word:
if letter in morse_code:
plaintext += morse_code[letter]
else:
# If the Morse code is badly formed, try to recover by looking one digit ahead
for i in range(1, 4):
lookahead = letter[i:]
if lookahead in morse_code:
plaintext += morse_code[lookahead]
break
else:
# If no valid Morse code sequence can be recovered, treat the character as a space
plaintext += " "
return plaintext
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