def setConfig(self, config):
if len(config) > 10:
print(
"Error, number of pairs in configuration must be at most 10 paris"
)
sys.exit(0)
elif len(config) > 0 and len(config) <= 10:
#checks if there are only 2 letters in each switch
for pair in config:
if len(pair) != 2:
print("plugboard configuration isn't legal")
sys.exit(0)
#checks if each letter appear only once in the configuration
for pair in config:
for pair2 in config:
if pair != pair2:
if pair2.count(pair[0]) != 0 or pair2.count(
pair[1]) != 0:
print(
"illegal plugboard configuration, each pair of letters must contain different letters"
)
sys.exit(0)
for pair in config:
f_letter = pair[0]
s_letter = pair[1]
f_index = Translator.letterToindex(f_letter)
s_index = Translator.letterToindex(s_letter)
self.permutation[f_index] = s_letter
self.permutation[s_index] = f_letter
def translation(self, letter):
message = self.circularshift(self.offset - self.settings, letter)
if self.dir == "FW":
newmessage = self.permutation[Translator.letterToindex(message)]
else:
newmessage = self.reversepermutation[Translator.letterToindex(
message)]
return self.circularshift((self.settings - 1) - (self.offset - 1),
newmessage)
def __init__(self, num, permutation, turnOverN):
self.num = num
self.permutation = permutation
self.turnOverN = Translator.letterToindex(turnOverN)
self.offset = 0
self.settings = 0
self.reversepermutation = [0] * self.alphabet_size
self.reversetranslation()
def translation(self, letter):
return self.permutation[Translator.letterToindex(letter)]
