Function _decode

recipes/Python/572159_SPICE/recipe-572159.py:347–357

Private module function.

(string, map_1, map_2)

    return cache

def _decode(string, map_1, map_2):
    'Private module function.'
    cache = ''
    iterator = iter(string)
    for byte in iterator:
        bits_12 = map_1[ord(byte)] << 6
        bits_34 = map_1[ord(iterator.next())] << 4
        bits_56 = map_1[ord(iterator.next())] << 2
        bits_78 = map_1[ord(iterator.next())]
        cache += map_2[bits_12 + bits_34 + bits_56 + bits_78]
    return cache

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