#! /usr/bin/env python
# -*- coding: UTF-8 -*-

""" PyConverter, convertitore in python creato da
        Frafra (francesco.it@gmail.com)
    col contributo di
        C8E e Drew Perttula

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    GNU General Public License for more details.
"""  

__module_name__ = "PyConverter"
__module_version__ = "2.2"
__module_description__ = "Converirore di numeri in varie basi"

from appuifw import app, note, popup_menu, query

choice = {
    "None":"None",
    "0":"quit",
    "1":"binario",
    "2":"decimale",
    "3":"ottale",
    "4":"esadecimale"
    }
valids = {
    "binario":"01",
    "decimale":"0123456789",
    "ottale":"01234567",
    "esadecimale":"0123456789ABCDEF"
    }

def conv(number, fromdigits, todigits):
    x = 0L
    for digit in str(number):
        x = x * len(fromdigits) + fromdigits.index(digit)
    res = ""
    while x > 0:
        digit = x % len(todigits)
        res = todigits[digit] + res
        x /= len(todigits)
    return res

def ask(message, valid_chars, min_len = 1, max_len = 20, max_retry = 10):
    for each in xrange(max_retry):
        if valid_chars == valids["esadecimale"]:
            answer = query(message + " ", "text")
        else:
            answer = str(query(message + " ", "number"))
        if answer != None:
            for char in answer:
                if char not in valid_chars:
                    note(u"Formato non valido, riprova.", "error")
                    break
            else:
                if min_len <= len(answer) <= max_len:
                    return answer
                else:
                    note(u"Formato non valido, riprova.", "error")
    note(u"Formato non valido, riprova.", "info")

app.title = unicode(__module_name__ + " " + __module_version__)
while 1:
    lista = "Esci-Da binario-Da decimale-Da ottale-Da esadecimale"
    lista = [unicode(x) for x in lista.split("-")]
    da = choice[str(popup_menu(lista, u"Menu'"))]
    if da == "quit" or da == "None":
        break
    lista = "Esci-A binario-A decimale-A ottale-A esadecimale"
    lista = [unicode(x) for x in lista.split("-")]
    a = choice[str(popup_menu(lista, u"Menu'"))]
    if a == "quit" or a == "None":
        break
    num = str(ask(u"Inserire un numero %s" % da, valids[da]))
    res = u"L'equivalente numero "+a+" e' "+conv(num, valids[da], valids[a])
    note(res, "info")