mirror of
https://github.com/clinton-hall/nzbToMedia.git
synced 2025-08-14 10:36:52 -07:00
Update rencode to 1.0.6
This commit is contained in:
Labrys of Knossos
parent
9fb4cc1986
commit
fc16e7c374
2 changed files with 185 additions and 200 deletions
12
libs/rencode/__init__.py
Normal file
12
libs/rencode/__init__.py
Normal file
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@ -0,0 +1,12 @@
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try:
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from rencode._rencode import *
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from rencode._rencode import __version__
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except ImportError:
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import rencode.rencode_orig
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prev_all = rencode.rencode_orig.__all__[:]
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del rencode.rencode_orig.__all__
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from rencode.rencode_orig import *
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from rencode.rencode_orig import __version__
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rencode.rencode_orig.__all__ = prev_all
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__all__ = ['dumps', 'loads']
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@ -1,35 +1,3 @@
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# coding=utf-8
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"""
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rencode -- Web safe object pickling/unpickling.
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Public domain, Connelly Barnes 2006-2007.
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The rencode module is a modified version of bencode from the
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BitTorrent project. For complex, heterogeneous data structures with
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many small elements, r-encodings take up significantly less space than
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b-encodings:
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>>> len(rencode.dumps({'a': 0, 'b': [1, 2], 'c': 99}))
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13
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>>> len(bencode.bencode({'a': 0, 'b': [1, 2], 'c': 99}))
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26
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The rencode format is not standardized, and may change with different
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rencode module versions, so you should check that you are using the
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same rencode version throughout your project.
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"""
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import struct
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from threading import Lock
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from six import PY3
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if PY3:
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long = int
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__version__ = '1.0.1'
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__all__ = ['dumps', 'loads']
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# Original bencode module by Petru Paler, et al.
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#
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# Modifications by Connelly Barnes:
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@ -69,6 +37,45 @@ __all__ = ['dumps', 'loads']
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#
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# (The rencode module is licensed under the above license as well).
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#
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# pylint: disable=redefined-builtin
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"""
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rencode -- Web safe object pickling/unpickling.
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Public domain, Connelly Barnes 2006-2007.
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The rencode module is a modified version of bencode from the
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BitTorrent project. For complex, heterogeneous data structures with
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many small elements, r-encodings take up significantly less space than
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b-encodings:
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>>> len(rencode.dumps({'a':0, 'b':[1,2], 'c':99}))
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13
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>>> len(bencode.bencode({'a':0, 'b':[1,2], 'c':99}))
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26
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The rencode format is not standardized, and may change with different
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rencode module versions, so you should check that you are using the
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same rencode version throughout your project.
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"""
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import struct
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import sys
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from threading import Lock
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__version__ = ("Python", 1, 0, 6)
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__all__ = ('dumps', 'loads')
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py3 = sys.version_info[0] >= 3
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if py3:
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long = int
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unicode = str
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def int2byte(c):
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return bytes([c])
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else:
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def int2byte(c):
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return chr(c)
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# Default number of bits for serialized floats, either 32 or 64 (also a parameter for dumps()).
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DEFAULT_FLOAT_BITS = 32
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@ -78,19 +85,19 @@ MAX_INT_LENGTH = 64
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# The bencode 'typecodes' such as i, d, etc have been extended and
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# relocated on the base-256 character set.
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CHR_LIST = chr(59)
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CHR_DICT = chr(60)
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CHR_INT = chr(61)
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CHR_INT1 = chr(62)
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CHR_INT2 = chr(63)
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CHR_INT4 = chr(64)
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CHR_INT8 = chr(65)
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CHR_FLOAT32 = chr(66)
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CHR_FLOAT64 = chr(44)
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CHR_TRUE = chr(67)
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CHR_FALSE = chr(68)
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CHR_NONE = chr(69)
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CHR_TERM = chr(127)
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CHR_LIST = int2byte(59)
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CHR_DICT = int2byte(60)
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CHR_INT = int2byte(61)
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CHR_INT1 = int2byte(62)
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CHR_INT2 = int2byte(63)
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CHR_INT4 = int2byte(64)
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CHR_INT8 = int2byte(65)
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CHR_FLOAT32 = int2byte(66)
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CHR_FLOAT64 = int2byte(44)
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CHR_TRUE = int2byte(67)
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CHR_FALSE = int2byte(68)
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CHR_NONE = int2byte(69)
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CHR_TERM = int2byte(127)
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# Positive integers with value embedded in typecode.
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INT_POS_FIXED_START = 0
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@ -112,6 +119,9 @@ STR_FIXED_COUNT = 64
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LIST_FIXED_START = STR_FIXED_START + STR_FIXED_COUNT
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LIST_FIXED_COUNT = 64
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# Whether strings should be decoded when loading
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_decode_utf8 = False
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def decode_int(x, f):
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f += 1
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@ -122,48 +132,49 @@ def decode_int(x, f):
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n = int(x[f:newf])
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except (OverflowError, ValueError):
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n = long(x[f:newf])
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if x[f] == '-':
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if x[f + 1] == '0':
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if x[f:f + 1] == '-':
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if x[f + 1:f + 2] == '0':
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raise ValueError
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elif x[f] == '0' and newf != f + 1:
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elif x[f:f + 1] == '0' and newf != f + 1:
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raise ValueError
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return n, newf + 1
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return (n, newf + 1)
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def decode_intb(x, f):
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f += 1
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return struct.unpack('!b', x[f:f + 1])[0], f + 1
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return (struct.unpack('!b', x[f:f + 1])[0], f + 1)
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def decode_inth(x, f):
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f += 1
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return struct.unpack('!h', x[f:f + 2])[0], f + 2
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return (struct.unpack('!h', x[f:f + 2])[0], f + 2)
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def decode_intl(x, f):
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f += 1
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return struct.unpack('!l', x[f:f + 4])[0], f + 4
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return (struct.unpack('!l', x[f:f + 4])[0], f + 4)
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def decode_intq(x, f):
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f += 1
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return struct.unpack('!q', x[f:f + 8])[0], f + 8
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return (struct.unpack('!q', x[f:f + 8])[0], f + 8)
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def decode_float32(x, f):
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f += 1
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n = struct.unpack('!f', x[f:f + 4])[0]
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return n, f + 4
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return (n, f + 4)
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def decode_float64(x, f):
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f += 1
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n = struct.unpack('!d', x[f:f + 8])[0]
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return n, f + 8
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return (n, f + 8)
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def decode_string(x, f):
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colon = x.index(':', f)
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colon = x.index(b':', f)
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try:
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n = int(x[f:colon])
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except (OverflowError, ValueError):
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@ -172,86 +183,73 @@ def decode_string(x, f):
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raise ValueError
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colon += 1
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s = x[colon:colon + n]
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try:
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t = s.decode("utf8")
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if len(t) != len(s):
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s = t
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except UnicodeDecodeError:
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pass
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return s, colon + n
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if _decode_utf8:
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s = s.decode('utf8')
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return (s, colon + n)
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def decode_list(x, f):
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r, f = [], f + 1
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while x[f] != CHR_TERM:
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v, f = decode_func[x[f]](x, f)
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while x[f:f + 1] != CHR_TERM:
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v, f = decode_func[x[f:f + 1]](x, f)
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r.append(v)
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return tuple(r), f + 1
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return (tuple(r), f + 1)
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def decode_dict(x, f):
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r, f = {}, f + 1
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while x[f] != CHR_TERM:
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k, f = decode_func[x[f]](x, f)
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r[k], f = decode_func[x[f]](x, f)
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return r, f + 1
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while x[f:f + 1] != CHR_TERM:
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k, f = decode_func[x[f:f + 1]](x, f)
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r[k], f = decode_func[x[f:f + 1]](x, f)
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return (r, f + 1)
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def decode_true(x, f):
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return True, f + 1
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return (True, f + 1)
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def decode_false(x, f):
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return False, f + 1
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return (False, f + 1)
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def decode_none(x, f):
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return None, f + 1
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return (None, f + 1)
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decode_func = {
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'0': decode_string,
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'1': decode_string,
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'2': decode_string,
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'3': decode_string,
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'4': decode_string,
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'5': decode_string,
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'6': decode_string,
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'7': decode_string,
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'8': decode_string,
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'9': decode_string,
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CHR_LIST: decode_list,
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CHR_DICT: decode_dict,
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CHR_INT: decode_int,
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CHR_INT1: decode_intb,
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CHR_INT2: decode_inth,
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CHR_INT4: decode_intl,
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CHR_INT8: decode_intq,
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CHR_FLOAT32: decode_float32,
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CHR_FLOAT64: decode_float64,
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CHR_TRUE: decode_true,
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CHR_FALSE: decode_false,
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CHR_NONE: decode_none,
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}
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decode_func = {}
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decode_func[b'0'] = decode_string
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decode_func[b'1'] = decode_string
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decode_func[b'2'] = decode_string
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decode_func[b'3'] = decode_string
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decode_func[b'4'] = decode_string
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decode_func[b'5'] = decode_string
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decode_func[b'6'] = decode_string
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decode_func[b'7'] = decode_string
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decode_func[b'8'] = decode_string
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decode_func[b'9'] = decode_string
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decode_func[CHR_LIST] = decode_list
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decode_func[CHR_DICT] = decode_dict
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decode_func[CHR_INT] = decode_int
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decode_func[CHR_INT1] = decode_intb
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decode_func[CHR_INT2] = decode_inth
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decode_func[CHR_INT4] = decode_intl
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decode_func[CHR_INT8] = decode_intq
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decode_func[CHR_FLOAT32] = decode_float32
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decode_func[CHR_FLOAT64] = decode_float64
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decode_func[CHR_TRUE] = decode_true
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decode_func[CHR_FALSE] = decode_false
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decode_func[CHR_NONE] = decode_none
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def make_fixed_length_string_decoders():
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def make_decoder(slen):
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def f(x, f):
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s = x[f + 1:f + 1 + slen]
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try:
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t = s.decode("utf8")
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if len(t) != len(s):
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s = t
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except UnicodeDecodeError:
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pass
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return s, f + 1 + slen
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if _decode_utf8:
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s = s.decode("utf8")
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return (s, f + 1 + slen)
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return f
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for i in range(STR_FIXED_COUNT):
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decode_func[chr(STR_FIXED_START + i)] = make_decoder(i)
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decode_func[int2byte(STR_FIXED_START + i)] = make_decoder(i)
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make_fixed_length_string_decoders()
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@ -260,16 +258,13 @@ def make_fixed_length_list_decoders():
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def make_decoder(slen):
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def f(x, f):
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r, f = [], f + 1
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for i in range(slen):
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v, f = decode_func[x[f]](x, f)
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for _ in range(slen):
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v, f = decode_func[x[f:f + 1]](x, f)
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r.append(v)
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return tuple(r), f
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return (tuple(r), f)
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return f
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for i in range(LIST_FIXED_COUNT):
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decode_func[chr(LIST_FIXED_START + i)] = make_decoder(i)
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decode_func[int2byte(LIST_FIXED_START + i)] = make_decoder(i)
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make_fixed_length_list_decoders()
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@ -277,15 +272,12 @@ make_fixed_length_list_decoders()
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def make_fixed_length_int_decoders():
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def make_decoder(j):
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def f(x, f):
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return j, f + 1
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return (j, f + 1)
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return f
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for i in range(INT_POS_FIXED_COUNT):
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decode_func[chr(INT_POS_FIXED_START + i)] = make_decoder(i)
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decode_func[int2byte(INT_POS_FIXED_START + i)] = make_decoder(i)
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for i in range(INT_NEG_FIXED_COUNT):
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decode_func[chr(INT_NEG_FIXED_START + i)] = make_decoder(-1 - i)
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decode_func[int2byte(INT_NEG_FIXED_START + i)] = make_decoder(-1 - i)
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make_fixed_length_int_decoders()
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@ -294,31 +286,22 @@ def make_fixed_length_dict_decoders():
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def make_decoder(slen):
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def f(x, f):
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r, f = {}, f + 1
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for j in range(slen):
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k, f = decode_func[x[f]](x, f)
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r[k], f = decode_func[x[f]](x, f)
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return r, f
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for _ in range(slen):
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k, f = decode_func[x[f:f + 1]](x, f)
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r[k], f = decode_func[x[f:f + 1]](x, f)
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return (r, f)
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return f
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for i in range(DICT_FIXED_COUNT):
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decode_func[chr(DICT_FIXED_START + i)] = make_decoder(i)
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decode_func[int2byte(DICT_FIXED_START + i)] = make_decoder(i)
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make_fixed_length_dict_decoders()
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def encode_dict(x, r):
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r.append(CHR_DICT)
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for k, v in x.items():
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encode_func[type(k)](k, r)
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encode_func[type(v)](v, r)
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r.append(CHR_TERM)
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def loads(x):
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def loads(x, decode_utf8=False):
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global _decode_utf8
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_decode_utf8 = decode_utf8
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try:
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r, l = decode_func[x[0]](x, 0)
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r, l = decode_func[x[0:1]](x, 0)
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except (IndexError, KeyError):
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raise ValueError
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if l != len(x):
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|
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@ -326,14 +309,11 @@ def loads(x):
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return r
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from types import StringType, IntType, LongType, DictType, ListType, TupleType, FloatType, NoneType, UnicodeType
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def encode_int(x, r):
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if 0 <= x < INT_POS_FIXED_COUNT:
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r.append(chr(INT_POS_FIXED_START + x))
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r.append(int2byte(INT_POS_FIXED_START + x))
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elif -INT_NEG_FIXED_COUNT <= x < 0:
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r.append(chr(INT_NEG_FIXED_START - 1 - x))
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r.append(int2byte(INT_NEG_FIXED_START - 1 - x))
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elif -128 <= x < 128:
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r.extend((CHR_INT1, struct.pack('!b', x)))
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elif -32768 <= x < 32768:
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|
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@ -344,6 +324,9 @@ def encode_int(x, r):
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r.extend((CHR_INT8, struct.pack('!q', x)))
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else:
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s = str(x)
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if py3:
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s = bytes(s, "ascii")
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|
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if len(s) >= MAX_INT_LENGTH:
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raise ValueError('overflow')
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r.extend((CHR_INT, s, CHR_TERM))
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|
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@ -358,18 +341,21 @@ def encode_float64(x, r):
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def encode_bool(x, r):
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r.extend({False: CHR_FALSE, True: CHR_TRUE}[bool(x)])
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r.append({False: CHR_FALSE, True: CHR_TRUE}[bool(x)])
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|
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def encode_none(x, r):
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r.extend(CHR_NONE)
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r.append(CHR_NONE)
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def encode_string(x, r):
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if len(x) < STR_FIXED_COUNT:
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r.extend((chr(STR_FIXED_START + len(x)), x))
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r.extend((int2byte(STR_FIXED_START + len(x)), x))
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else:
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r.extend((str(len(x)), ':', x))
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s = str(len(x))
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if py3:
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s = bytes(s, "ascii")
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r.extend((s, b':', x))
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|
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|
||||
def encode_unicode(x, r):
|
||||
|
|
@ -378,7 +364,7 @@ def encode_unicode(x, r):
|
|||
|
||||
def encode_list(x, r):
|
||||
if len(x) < LIST_FIXED_COUNT:
|
||||
r.append(chr(LIST_FIXED_START + len(x)))
|
||||
r.append(int2byte(LIST_FIXED_START + len(x)))
|
||||
for i in x:
|
||||
encode_func[type(i)](i, r)
|
||||
else:
|
||||
|
|
@ -390,7 +376,7 @@ def encode_list(x, r):
|
|||
|
||||
def encode_dict(x, r):
|
||||
if len(x) < DICT_FIXED_COUNT:
|
||||
r.append(chr(DICT_FIXED_START + len(x)))
|
||||
r.append(int2byte(DICT_FIXED_START + len(x)))
|
||||
for k, v in x.items():
|
||||
encode_func[type(k)](k, r)
|
||||
encode_func[type(v)](v, r)
|
||||
|
|
@ -401,27 +387,19 @@ def encode_dict(x, r):
|
|||
encode_func[type(v)](v, r)
|
||||
r.append(CHR_TERM)
|
||||
|
||||
|
||||
encode_func = {
|
||||
IntType: encode_int,
|
||||
LongType: encode_int,
|
||||
StringType: encode_string,
|
||||
ListType: encode_list,
|
||||
TupleType: encode_list,
|
||||
DictType: encode_dict,
|
||||
NoneType: encode_none,
|
||||
UnicodeType: encode_unicode,
|
||||
}
|
||||
encode_func = {}
|
||||
encode_func[int] = encode_int
|
||||
encode_func[long] = encode_int
|
||||
encode_func[bytes] = encode_string
|
||||
encode_func[list] = encode_list
|
||||
encode_func[tuple] = encode_list
|
||||
encode_func[dict] = encode_dict
|
||||
encode_func[type(None)] = encode_none
|
||||
encode_func[unicode] = encode_unicode
|
||||
encode_func[bool] = encode_bool
|
||||
|
||||
lock = Lock()
|
||||
|
||||
try:
|
||||
from types import BooleanType
|
||||
|
||||
encode_func[BooleanType] = encode_bool
|
||||
except ImportError:
|
||||
pass
|
||||
|
||||
|
||||
def dumps(x, float_bits=DEFAULT_FLOAT_BITS):
|
||||
"""
|
||||
|
|
@ -429,60 +407,55 @@ def dumps(x, float_bits=DEFAULT_FLOAT_BITS):
|
|||
|
||||
Here float_bits is either 32 or 64.
|
||||
"""
|
||||
lock.acquire()
|
||||
try:
|
||||
with lock:
|
||||
if float_bits == 32:
|
||||
encode_func[FloatType] = encode_float32
|
||||
encode_func[float] = encode_float32
|
||||
elif float_bits == 64:
|
||||
encode_func[FloatType] = encode_float64
|
||||
encode_func[float] = encode_float64
|
||||
else:
|
||||
raise ValueError('Float bits ({0:d}) is not 32 or 64'.format(float_bits))
|
||||
raise ValueError('Float bits (%d) is not 32 or 64' % float_bits)
|
||||
r = []
|
||||
encode_func[type(x)](x, r)
|
||||
finally:
|
||||
lock.release()
|
||||
return ''.join(r)
|
||||
return b''.join(r)
|
||||
|
||||
|
||||
def test():
|
||||
f1 = struct.unpack('!f', struct.pack('!f', 25.5))[0]
|
||||
f2 = struct.unpack('!f', struct.pack('!f', 29.3))[0]
|
||||
f3 = struct.unpack('!f', struct.pack('!f', -0.6))[0]
|
||||
L = (({'a': 15, 'bb': f1, 'ccc': f2, '': (f3, (), False, True, '')}, ('a', 10 ** 20), tuple(range(-100000, 100000)),
|
||||
'b' * 31, 'b' * 62, 'b' * 64, 2 ** 30, 2 ** 33, 2 ** 62, 2 ** 64, 2 ** 30, 2 ** 33, 2 ** 62, 2 ** 64, False,
|
||||
False, True, -1, 2, 0),)
|
||||
assert loads(dumps(L)) == L
|
||||
ld = (({b'a': 15, b'bb': f1, b'ccc': f2, b'': (f3, (), False, True, b'')}, (b'a', 10**20),
|
||||
tuple(range(-100000, 100000)), b'b' * 31, b'b' * 62, b'b' * 64, 2**30, 2**33, 2**62,
|
||||
2**64, 2**30, 2**33, 2**62, 2**64, False, False, True, -1, 2, 0),)
|
||||
assert loads(dumps(ld)) == ld
|
||||
d = dict(zip(range(-100000, 100000), range(-100000, 100000)))
|
||||
d.update({'a': 20, 20: 40, 40: 41, f1: f2, f2: f3, f3: False, False: True, True: False})
|
||||
L = (d, {}, {5: 6}, {7: 7, True: 8}, {9: 10, 22: 39, 49: 50, 44: ''})
|
||||
assert loads(dumps(L)) == L
|
||||
L = ('', 'a' * 10, 'a' * 100, 'a' * 1000, 'a' * 10000, 'a' * 100000, 'a' * 1000000, 'a' * 10000000)
|
||||
assert loads(dumps(L)) == L
|
||||
L = tuple([dict(zip(range(n), range(n))) for n in range(100)]) + ('b',)
|
||||
assert loads(dumps(L)) == L
|
||||
L = tuple([dict(zip(range(n), range(-n, 0))) for n in range(100)]) + ('b',)
|
||||
assert loads(dumps(L)) == L
|
||||
L = tuple([tuple(range(n)) for n in range(100)]) + ('b',)
|
||||
assert loads(dumps(L)) == L
|
||||
L = tuple(['a' * n for n in range(1000)]) + ('b',)
|
||||
assert loads(dumps(L)) == L
|
||||
L = tuple(['a' * n for n in range(1000)]) + (None, True, None)
|
||||
assert loads(dumps(L)) == L
|
||||
d.update({b'a': 20, 20: 40, 40: 41, f1: f2, f2: f3, f3: False, False: True, True: False})
|
||||
ld = (d, {}, {5: 6}, {7: 7, True: 8}, {9: 10, 22: 39, 49: 50, 44: b''})
|
||||
assert loads(dumps(ld)) == ld
|
||||
ld = (b'', b'a' * 10, b'a' * 100, b'a' * 1000, b'a' * 10000, b'a' * 100000, b'a' * 1000000, b'a' * 10000000)
|
||||
assert loads(dumps(ld)) == ld
|
||||
ld = tuple([dict(zip(range(n), range(n))) for n in range(100)]) + (b'b',)
|
||||
assert loads(dumps(ld)) == ld
|
||||
ld = tuple([dict(zip(range(n), range(-n, 0))) for n in range(100)]) + (b'b',)
|
||||
assert loads(dumps(ld)) == ld
|
||||
ld = tuple([tuple(range(n)) for n in range(100)]) + (b'b',)
|
||||
assert loads(dumps(ld)) == ld
|
||||
ld = tuple([b'a' * n for n in range(1000)]) + (b'b',)
|
||||
assert loads(dumps(ld)) == ld
|
||||
ld = tuple([b'a' * n for n in range(1000)]) + (None, True, None)
|
||||
assert loads(dumps(ld)) == ld
|
||||
assert loads(dumps(None)) is None
|
||||
assert loads(dumps({None: None})) == {None: None}
|
||||
assert 1e-10 < abs(loads(dumps(1.1)) - 1.1) < 1e-6
|
||||
assert 1e-10 < abs(loads(dumps(1.1, 32)) - 1.1) < 1e-6
|
||||
assert abs(loads(dumps(1.1, 64)) - 1.1) < 1e-12
|
||||
assert loads(dumps(u"Hello World!!"))
|
||||
|
||||
|
||||
assert loads(dumps("Hello World!!"), decode_utf8=True)
|
||||
try:
|
||||
import psyco
|
||||
|
||||
psyco.bind(dumps)
|
||||
psyco.bind(loads)
|
||||
except ImportError:
|
||||
pass
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
test()
|
||||
Loading…
Add table
Add a link
Reference in a new issue