Minipedia/decoder.py at main · khorneflaeks/Minipedia · GitHub

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from bitstring import BitArray
iscapital = False
istitle = True

def bitify(filename):
    file = open(filename+".5bf", "rb")
    byte = file.read(1) #add while byte:
    fullnum = ""
    fullstr = ""
    while byte:
        checknum = "{0:b}".format(int.from_bytes(byte, "little")).zfill(8) #reads byte as integer
        fullnum = fullnum + checknum
        if (len(fullnum) > 39):
            fullnum2 = int(fullnum, 2)
            for x2 in range(8):
                fullstr = fullstr + bitcheck(readbits40(fullnum2,x2*5,5))
            fullnum = ""
        byte = file.read(1) #new byte
    return fullstr


def readbits40(var,start,amount):
    var = var >> (40-(start+amount)) & (int((40-amount)*"0"+amount*"1",2)) #reads amount amount of bits from position start starting from 0
    return var

def bitcheck(fivebit):
    global iscapital
    global istitle
    match fivebit: #decodes integer to character
        case 0:
            return " "
        case 27:
            return "."
        case 28:
            return ","
        case 29:
            return "("
        case 30:
            return ")"
        case 31:
            if (istitle == True):
                istitle = False
                return "\n\n"
            iscapital = True
            return ""
        case _:
            if (iscapital == False):
                return chr(fivebit+96)
            else:
                iscapital = False
                return chr(fivebit+64)
    return binry