Function work_encode

recipes/Python/456374_Crypt/recipe-456374.py:178–196

Encodes and saves a file. Creates buffers for a new file and a "quick key." Generates the "quick key." Encodes the old file onto the new file buffer. Writes the buffer to the destination. Closes the open files.

(source, destination, key)

    return key

def work_encode(source, destination, key):
    '''Encodes and saves a file.

    Creates buffers for a new file and a "quick key."
    Generates the "quick key."
    Encodes the old file onto the new file buffer.
    Writes the buffer to the destination.
    Closes the open files.'''
    new_file = ''
    encode_key = range(256)
    for index in range(256):
        encode_key[key[index][0]] = key[index][1]
    for line in source:
        for byte in line:
            new_file += chr(encode_key[ord(byte)])
    destination.write(new_file)
    source.close()
    destination.flush()
    destination.close()

def decode_file():
    '''Decodes a file.