decoder.py

# Jackie's Universal Cartographics System Code Decoder
# Kay Johnston
# Now with added elegance.
# Updated & Improved by VitaminArrr

import sys

alphabet = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'

divisor = len(alphabet)
middle = divisor**2
biggest = divisor**3

rowlength = 128
sidelength = rowlength**2

def finder(column,row,stack,lettercode):

    if lettercode == 'H':
        print("AA-A H1-(system code)")
        return
    elif lettercode == 'G':
        cubeside = 640
    elif lettercode == 'F':
        cubeside = 320
    elif lettercode == 'E':
        cubeside = 160
    elif lettercode == 'D':
        cubeside = 80
    elif lettercode == 'C':
        cubeside = 40
    elif lettercode == 'B':
        cubeside = 20
    elif lettercode == 'A':
        cubeside = 10

    if row >= cubeside:
        row = row - (row % cubeside)
    else: row = 0
    row = int(row / cubeside)

    if stack >= cubeside:
        stack = stack - (stack % cubeside)
    else: stack = 0
    
    stack = int(stack/cubeside)
    
    if column >= cubeside:
        column = column - (column % cubeside) 
    else: column = 0
    column = int(column / cubeside)    

    position = 0
    position += row * sidelength
    position += stack * rowlength
    position += column

    number = int(position / biggest)
    working = position - (number * biggest)

    number_third = int(working / middle)
    third = alphabet[number_third]
    working = working - (number_third * middle)

    number_second = int(working / divisor)
    second = alphabet[number_second]
    working = working - (number_second * divisor)
    
    first = alphabet[working]

    if number != 0:
        text = first + second + '-' + third + ' ' + lettercode + str(number) + '-[SystemNumber]'
    else:
        text = first + second + '-' + third + ' ' + lettercode + '[SystemNumber]'
        
    print
    print 'System name for these coordinates: [Sector Name]',text
    print

def reverse(first,second,third,lettercode,first_number,second_number):

    position = 0
    position += first_number * biggest
    
    for letter in range(divisor):
        if alphabet[letter] == third:
            position += letter * middle
            
    for letter in range(divisor):
        if alphabet[letter] == second:
            position += letter * divisor
            
    for letter in range(divisor):
        if alphabet[letter] == first:
            position += letter
            
    working = position

    row = int(working / sidelength)
    working = working - (row * sidelength)

    stack = int(working / rowlength)
    working = working - (stack * rowlength)

    column = working

    if first_number != 0:
        text = first + second + '-' + third + ' ' + lettercode + str(first_number) + '-' + str(second_number)
    else:
        text = first + second + '-' + third + ' ' + lettercode + str(second_number)

    if lettercode == 'H':
        cubeside = 1280
    elif lettercode == 'G':
        cubeside = 640
    elif lettercode == 'F':
        cubeside = 320
    elif lettercode == 'E':
        cubeside = 160
    elif lettercode == 'D':
        cubeside = 80
    elif lettercode == 'C':
        cubeside = 40
    elif lettercode == 'B':
        cubeside = 20
    elif lettercode == 'A':
        cubeside = 10

    halfwidth = cubeside / 2

    approx_x = (column * cubeside) + halfwidth
    approx_y = (row * cubeside) + halfwidth
    approx_z = (stack * cubeside) + halfwidth

    print
    print 'Approximate coordinates of its cube within sector coordinate-space: ','x ~',approx_x,' y ~',approx_y,' z ~',approx_z
    print

def man():
        print
        print("Invalid command. Usage:")
        print("   reverse [Letter1] [Letter2] [Letter3] [LetterCode] [Number1] [Number2]")
        print("   find [0-1280] [0-1280] [0-1280] [LetterCode]")
        print
        
if len(sys.argv) > 1:

    if sys.argv[1] == "reverse":
        reverse(sys.argv[2],sys.argv[3],sys.argv[4],sys.argv[5],int(sys.argv[6]),int(sys.argv[7]))
    elif sys.argv[1] == "find":
        finder(int(sys.argv[2]),int(sys.argv[3]),int(sys.argv[4]),sys.argv[5])
    else: 
        man()
else: 
    man()

Thank you :-)