paph

#!/usr/bin/python3

import os
import random
import sys


def help():
    print(
        """Usage :\n"""
        """paph -h shows this help\n"""
        """paph 5 generates a passphrase of 5 random words.\n"""
        """paph generates a passphrase of 6 random words.\n"""
        """As a 6 words long passphrase is recommended, """
        """this is the default value.\n""")


def wrong_args(arg):
    print("Wrong arg. '%s' found" % arg)
    help()


def no_dictfile(path):
    print("No dict file named %s" % path)


def valid_word(word):
    return len(set(word)) > 3


if __name__ == "__main__":
    filename = "words_alpha.txt"
    path = os.path.join(os.path.dirname(__file__), filename)
    if not os.path.exists(path) or not os.path.isfile(path):
        no_dictfile(path)
        exit(1)
    args = sys.argv
    qty = 6
    if len(args) > 1:
        if args[1] == "-h":
            help()
            exit(0)
        if not args[1].isdecimal():
            wrong_args(args[1])
            exit(1)
        qty = int(args[1])
    with open(path, "rb") as f:
        random.seed()
        words = [word.decode("latin-1") for word in f if valid_word(word)]
        choices = [
            random.choice(words).replace("\r", "").replace("\n", "") for
            i in range(qty)]
        print(" ".join(choices))
    exit(0)