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# publish, distribute, sublicense, and/or sell copies of the Software,
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# and to permit persons to whom the Software is furnished to do so,
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# subject to the following conditions:
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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# Modifications copyright (C) 2008 Canonical Ltd
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class BDecoder(object):
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def __init__(self, yield_tuples=False):
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:param yield_tuples: if true, decode "l" elements as tuples rather than
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self.yield_tuples = yield_tuples
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decode_func['l'] = self.decode_list
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decode_func['d'] = self.decode_dict
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decode_func['i'] = self.decode_int
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decode_func['0'] = self.decode_string
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decode_func['1'] = self.decode_string
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decode_func['2'] = self.decode_string
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decode_func['3'] = self.decode_string
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decode_func['4'] = self.decode_string
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decode_func['5'] = self.decode_string
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decode_func['6'] = self.decode_string
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decode_func['7'] = self.decode_string
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decode_func['8'] = self.decode_string
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decode_func['9'] = self.decode_string
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self.decode_func = decode_func
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def decode_int(self, x, f):
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newf = x.index('e', f)
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except (OverflowError, ValueError):
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elif x[f] == '0' and newf != f+1:
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def decode_string(self, x, f):
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colon = x.index(':', f)
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except (OverflowError, ValueError):
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if x[f] == '0' and colon != f+1:
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return (x[colon:colon+n], colon+n)
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def decode_list(self, x, f):
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v, f = self.decode_func[x[f]](x, f)
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def decode_dict(self, x, f):
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k, f = self.decode_string(x, f)
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r[k], f = self.decode_func[x[f]](x, f)
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r, l = self.decode_func[x[0]](x, 0)
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except (IndexError, KeyError, OverflowError), e:
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raise ValueError, ValueError(str(e)), sys.exc_info()[2]
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_decoder = BDecoder()
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bdecode = _decoder.bdecode
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_tuple_decoder = BDecoder(True)
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bdecode_as_tuple = _tuple_decoder.bdecode
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# The Software is provided "AS IS", without warranty of any kind,
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# express or implied, including but not limited to the warranties of
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# merchantability, fitness for a particular purpose and
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# noninfringement. In no event shall the authors or copyright holders
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# be liable for any claim, damages or other liability, whether in an
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# action of contract, tort or otherwise, arising from, out of or in
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# connection with the Software or the use or other dealings in the
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newf = x.index('e', f)
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except (OverflowError, ValueError):
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elif x[f] == '0' and newf != f+1:
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def decode_string(x, f):
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colon = x.index(':', f)
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except (OverflowError, ValueError):
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if x[f] == '0' and colon != f+1:
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return (x[colon:colon+n], colon+n)
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def decode_list(x, f):
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v, f = decode_func[x[f]](x, f)
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def decode_dict(x, f):
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k, f = decode_string(x, f)
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r[k], f = decode_func[x[f]](x, f)
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decode_func['l'] = decode_list
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decode_func['d'] = decode_dict
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decode_func['i'] = decode_int
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decode_func['0'] = decode_string
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decode_func['1'] = decode_string
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decode_func['2'] = decode_string
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decode_func['3'] = decode_string
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decode_func['4'] = decode_string
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decode_func['5'] = decode_string
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decode_func['6'] = decode_string
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decode_func['7'] = decode_string
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decode_func['8'] = decode_string
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decode_func['9'] = decode_string
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r, l = decode_func[x[0]](x, 0)
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except (IndexError, KeyError):
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from types import StringType, IntType, LongType, DictType, ListType, TupleType