#rencode
The rencode module is similar to bencode from the BitTorrent project. For complex, heterogeneous data structures with many small elements, r-encodings take up significantly less space than b-encodings:
>>> len(rencode.dumps({'a':0, 'b':[1,2], 'c':99}))
13
>>> len(bencode.bencode({'a':0, 'b':[1,2], 'c':99}))
26
This version of rencode is a complete rewrite in Cython to attempt to increase the performance over the pure Python module written by Petru Paler, Connelly Barnes et al.
##Performance Comparison The test program used for these results is included in the repository: https://github.com/aresch/rencode/blob/master/tests/timetest.py
###Encode functions
test_encode_fixed_pos_int:
rencode.pyx: 0.003s (+0.013s) 589.17%
rencode.py: 0.016s
test_encode_int_int_size:
rencode.pyx: 0.006s (+0.032s) 625.99%
rencode.py: 0.038s
test_encode_int_long_long_size:
rencode.pyx: 0.014s (+0.026s) 279.96%
rencode.py: 0.040s
test_encode_int_short_size:
rencode.pyx: 0.006s (+0.030s) 629.80%
rencode.py: 0.036s
test_encode_str:
rencode.pyx: 0.006s (+0.010s) 263.96%
rencode.py: 0.017s
test_encode_dict:
rencode.pyx: 0.135s (+0.302s) 324.68%
rencode.py: 0.437s
test_encode_fixed_list:
rencode.pyx: 0.012s (+0.025s) 307.78%
rencode.py: 0.037s
test_encode_fixed_neg_int:
rencode.pyx: 0.003s (+0.012s) 536.97%
rencode.py: 0.015s
test_encode_fixed_dict:
rencode.pyx: 0.046s (+0.105s) 331.07%
rencode.py: 0.151s
test_encode_int_char_size:
rencode.pyx: 0.005s (+0.029s) 687.64%
rencode.py: 0.034s
test_encode_fixed_str:
rencode.pyx: 0.003s (+0.011s) 438.07%
rencode.py: 0.015s
test_encode_list:
rencode.pyx: 0.148s (+0.228s) 253.68%
rencode.py: 0.376s
test_encode_none:
rencode.pyx: 0.004s (+0.011s) 386.06%
rencode.py: 0.014s
test_encode_int_big_number:
rencode.pyx: 0.011s (+0.019s) 264.32%
rencode.py: 0.030s
test_encode_float_64bit:
rencode.pyx: 0.003s (+0.011s) 416.19%
rencode.py: 0.014s
test_encode_bool:
rencode.pyx: 0.004s (+0.014s) 447.57%
rencode.py: 0.018s
test_encode_float_32bit:
rencode.pyx: 0.003s (+0.010s) 417.86%
rencode.py: 0.014s
Encode functions totals:
rencode.pyx: 0.412s (+0.888s) 315.49%
rencode.py: 1.301s
###Decode functions
test_decode_fixed_list:
rencode.pyx: 0.003s (+0.020s) 848.67%
rencode.py: 0.022s
test_decode_int_long_long_size:
rencode.pyx: 0.003s (+0.013s) 484.80%
rencode.py: 0.016s
test_decode_dict:
rencode.pyx: 0.267s (+0.406s) 251.81%
rencode.py: 0.673s
test_decode_fixed_dict:
rencode.pyx: 0.087s (+0.123s) 241.32%
rencode.py: 0.211s
test_decode_float_32bit:
rencode.pyx: 0.002s (+0.007s) 536.88%
rencode.py: 0.009s
test_decode_int_big_number:
rencode.pyx: 0.007s (+0.010s) 256.05%
rencode.py: 0.017s
test_decode_int_char_size:
rencode.pyx: 0.002s (+0.014s) 754.12%
rencode.py: 0.016s
test_decode_fixed_neg_int:
rencode.pyx: 0.001s (+0.004s) 389.03%
rencode.py: 0.006s
test_decode_fixed_str:
rencode.pyx: 0.009s (+0.009s) 199.78%
rencode.py: 0.019s
test_decode_float_64bit:
rencode.pyx: 0.002s (+0.007s) 540.17%
rencode.py: 0.009s
test_decode_bool:
rencode.pyx: 0.002s (+0.004s) 369.49%
rencode.py: 0.006s
test_decode_fixed_pos_int:
rencode.pyx: 0.002s (+0.004s) 368.96%
rencode.py: 0.006s
test_decode_list:
rencode.pyx: 0.019s (+0.247s) 1403.77%
rencode.py: 0.266s
test_decode_none:
rencode.pyx: 0.002s (+0.004s) 367.05%
rencode.py: 0.006s
test_decode_int_short_size:
rencode.pyx: 0.002s (+0.014s) 716.47%
rencode.py: 0.016s
test_decode_str:
rencode.pyx: 0.010s (+0.026s) 364.51%
rencode.py: 0.036s
test_decode_int_int_size:
rencode.pyx: 0.002s (+0.014s) 705.92%
rencode.py: 0.016s
Decode functions totals:
rencode.pyx: 0.421s (+0.926s) 319.79%
rencode.py: 1.348s
###Overall functions
test_overall_encode:
rencode.pyx: 0.069s (+0.120s) 274.42%
rencode.py: 0.189s
test_overall_decode:
rencode.pyx: 0.051s (+0.153s) 400.57%
rencode.py: 0.204s
Overall functions totals:
rencode.pyx: 0.120s (+0.273s) 327.98%
rencode.py: 0.393s
##Author
- Andrew Resch [email protected]
- Website: https://github.com/aresch/rencode
##License See [COPYING] (https://github.com/aresch/rencode/blob/master/COPYING) for license information.