FunWithTransformations.py

#!/usr/bin/python3

import random 
import sys

class Ciper:
    def __init__(self):
        self.numbers = [1, 7, 10, 13, 19, 23, 28, 31, 32, 44, 49, 68, 70, 79, 82, 86, 91, 94, 97, 100, 103, 109, 129, 130]

    def generateNoToken(self, string):
        token = string[random.randint(0, len(string) - 1)]
        return self.generate(string, token)

    def clampAndModuate(self, n, min, max):
        range = max - min
        return (abs(n - min) % range) + min

    def generate(self, string, token, omitKey=False):
        first = 0
        shift = ord(token)
        if shift <= ord('Z'):
            first = ord('A')
        else:
            first = ord('a')

        out = ''
        for i, c in enumerate(string):
            alphaIndex = ord(c) - first - 1
            n = self.numbers[0 + (shift + alphaIndex) % 24]
            if i % (shift - first + 1) == 0:
                for j in range(alphaIndex):
                    out += chr(ord('a') + n)
            else:
                out += str(n)

        out += "h=, %c" % (chr(shift)) if not omitKey else "h="
        return out

class InteractiveMode:
    def __init__(self):
        self.c = Ciper()
        self.bStop = False

    def stop(self):
        sys.exit(0)

    def start(self):
        while True:
            self.invokeStep()

    def invokeStep(self):
        print('> ', end='')
        string = input()

        if string == 'q' or string == 'Q':
            self.stop()

        if(len(string) == 0):
            return

        chunks = string.split(' ')
        if len(chunks) >= 2:
            print(self.c.generate(chunks[0], chunks[1]))
        else:
            print(self.c.generateNoToken(string))

def abort():
    print('E: bad input')

# Why the HELL is there no argc??
argc = len(sys.argv)

if argc == 1:
    InteractiveMode().start()
elif argc == 2:
    print(Ciper().generateNoToken(sys.argv[1]))
elif argc == 3:
    print(Ciper().generate(sys.argv[1],sys.argv[2], True))
else:
    abort()