From 5eb6bdced4765cdeb70411c6aa93ecb4163a9ffe Mon Sep 17 00:00:00 2001 From: Yen Chi Hsuan Date: Sat, 27 Feb 2016 03:19:50 +0800 Subject: [utils] Multiple changes to base_n() 1. Renamed to encode_base_n() 2. Allow tables longer than 62 characters 3. Raise ValueError instead of AssertionError for invalid input data 4. Return the first character in the table instead of '0' for number 0 5. Add tests --- youtube_dl/utils.py | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) (limited to 'youtube_dl/utils.py') diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py index 756ad4fd1..606977c58 100644 --- a/youtube_dl/utils.py +++ b/youtube_dl/utils.py @@ -2621,15 +2621,17 @@ def ohdave_rsa_encrypt(data, exponent, modulus): return '%x' % encrypted -def base_n(num, n, table=None): - if num == 0: - return '0' - +def encode_base_n(num, n, table=None): FULL_TABLE = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ' - assert n <= len(FULL_TABLE) if not table: table = FULL_TABLE[:n] + if n > len(table): + raise ValueError('base %d exceeds table length %d' % (n, len(table))) + + if num == 0: + return table[0] + ret = '' while num: ret = table[num % n] + ret @@ -2649,7 +2651,7 @@ def decode_packed_codes(code): while count: count -= 1 - base_n_count = base_n(count, base) + base_n_count = encode_base_n(count, base) symbol_table[base_n_count] = symbols[count] or base_n_count return re.sub( -- cgit v1.2.3