|
4 | 4 |
|
5 | 5 | PAD = '=' |
6 | 6 |
|
7 | | -#pylint:disable=bad-whitespace,invalid-name |
8 | | -table_a2b_base64 = [ |
9 | | - -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, |
10 | | - -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, |
11 | | - -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,62, -1,-1,-1,63, |
12 | | - 52,53,54,55, 56,57,58,59, 60,61,-1,-1, -1,-1,-1,-1, # Note PAD->-1 here |
13 | | - -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10, 11,12,13,14, |
14 | | - 15,16,17,18, 19,20,21,22, 23,24,25,-1, -1,-1,-1,-1, |
15 | | - -1,26,27,28, 29,30,31,32, 33,34,35,36, 37,38,39,40, |
16 | | - 41,42,43,44, 45,46,47,48, 49,50,51,-1, -1,-1,-1,-1, |
17 | | - -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, |
18 | | - -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, |
19 | | - -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, |
20 | | - -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, |
21 | | - -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, |
22 | | - -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, |
23 | | - -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, |
24 | | - -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, |
25 | | -] |
26 | | -#pylint:enable=bad-whitespace |
| 7 | +#pylint:disable=bad-whitespace,invalid-name,bad-continuation |
| 8 | +table_a2b_base64 = bytes([ |
| 9 | + 255,255,255,255, 255,255,255,255, 255,255,255,255, 255,255,255,255, |
| 10 | + 255,255,255,255, 255,255,255,255, 255,255,255,255, 255,255,255,255, |
| 11 | + 255,255,255,255, 255,255,255,255, 255,255,255, 62, 255,255,255, 63, |
| 12 | + 52, 53, 54, 55, 56, 57, 58, 59, 60, 61,255,255, 255,255,255,255, |
| 13 | + 255, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, |
| 14 | + 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,255, 255,255,255,255, |
| 15 | + 255, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, |
| 16 | + 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,255, 255,255,255,255, |
| 17 | + 255,255,255,255, 255,255,255,255, 255,255,255,255, 255,255,255,255, |
| 18 | + 255,255,255,255, 255,255,255,255, 255,255,255,255, 255,255,255,255, |
| 19 | + 255,255,255,255, 255,255,255,255, 255,255,255,255, 255,255,255,255, |
| 20 | + 255,255,255,255, 255,255,255,255, 255,255,255,255, 255,255,255,255, |
| 21 | + 255,255,255,255, 255,255,255,255, 255,255,255,255, 255,255,255,255, |
| 22 | + 255,255,255,255, 255,255,255,255, 255,255,255,255, 255,255,255,255, |
| 23 | + 255,255,255,255, 255,255,255,255, 255,255,255,255, 255,255,255,255, |
| 24 | + 255,255,255,255, 255,255,255,255, 255,255,255,255, 255,255,255,255, |
| 25 | +]) |
| 26 | +#pylint:enable=bad-whitespace,bad-continuation |
27 | 27 |
|
28 | | -def _transform(n): |
29 | | - if n == -1: |
30 | | - return '\xff' |
31 | | - return chr(n) |
32 | | - |
33 | | -table_a2b_base64 = ''.join(map(_transform, table_a2b_base64)) |
34 | 28 | assert len(table_a2b_base64) == 256 |
35 | 29 |
|
36 | 30 | def a2b_base64(ascii_data): |
|
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