Move bencode to voussoirkit.

Bencode/bencode.py

@@ -1,147 +0,0 @@
-'''
-A Python 3 translation of bcode.py
-https://pypi.python.org/pypi/bcode/0.5
-'''
-
-def bencode(data):
-    '''
-    Encode python types to bencode.
-    '''
-    if data is None:
-        return None
-
-    data_type = type(data)
-
-    encoders = {
-        bytes: encode_bytes,
-        float: encode_float,
-        int: encode_int,
-        dict: encode_dict,
-    }
-
-    encoder = encoders.get(data_type, None)
-    if encoder is None:
-        try:
-            return encode_iterator(iter(data))
-        except TypeError:
-            raise ValueError('Invalid field type %s' % data_type)
-    return encoder(data)
-
-def encode_bytes(data):
-    return b'%d:%s' % (len(data), data)
-
-def encode_dict(data):
-    result = []
-    keys = list(data.keys())
-    keys.sort()
-    for key in keys:
-        result.append(bencode(key))
-        result.append(bencode(data[key]))
-    result = b''.join(result)
-    return b'd%se' % result
-
-def encode_float(data):
-    return encode_bytes(str(data).encode())
-
-def encode_int(data):
-    return b'i%de' % data
-
-def encode_iterator(data):
-    result = []
-    for item in data:
-        result.append(bencode(item))
-    result = b''.join(result)
-    return b'l%se' % result
-
-
-# =============================================================================
-
-
-def bdecode(data):
-    '''
-    Decode bencode to python types.
-
-    Returns a dictionary
-    {
-        'result': the decoded item
-        'remainder': what's left of the input text
-    }
-    '''
-    if data is None:
-        return None
-
-    #data = data.strip()
-    if isinstance(data, str):
-        data = data.encode('utf-8')
-
-    identifier = data[0:1]
-    if identifier == b'i':
-        return decode_int(data)
-
-    if identifier.isdigit():
-        return decode_bytes(data)
-
-    if identifier == b'l':
-        return decode_list(data)
-
-    if identifier == b'd':
-        return decode_dict(data)
-
-    raise ValueError('Invalid initial delimiter "%s"' % identifier)
-
-def decode_bytes(data):
-    #print('Decoding bytes from', data[:100])
-    start = data.find(b':') + 1
-    size = int(data[:start-1])
-    end = start + size
-    text = data[start:end]
-    if len(text) < size:
-        raise ValueError('Actual length %d is less than declared length %d' % len(text), size)
-    remainder = data[end:]
-    return {'result': text, 'remainder': remainder}
-
-def decode_dict(data):
-    #print('Decoding dict from', data[:100])
-    result = {}
-
-    # slice leading d
-    remainder = data[1:]
-    while remainder[0:1] != b'e':
-        temp = bdecode(remainder)
-        key = temp['result']
-        remainder = temp['remainder']
-
-        temp = bdecode(remainder)
-        value = temp['result']
-        remainder = temp['remainder']
-        result[key] = value
-
-    # slice ending e
-    remainder = remainder[1:]
-    return {'result': result, 'remainder': remainder}
-
-def decode_int(data):
-    #print('Decoding int from', data[:100])
-    end = data.find(b'e')
-    if end == -1:
-        raise ValueError('Missing end delimiter "e"')
-
-    # slice leading i and closing e
-    result = int(data[1:end])
-    remainder = data[end+1:]
-    return {'result': result, 'remainder': remainder}
-
-def decode_list(data):
-    #print('Decoding list from', data[:100])
-    result = []
-
-    # slice leading l
-    remainder = data[1:]
-    while remainder[0:1] != b'e':
-        item = bdecode(remainder)
-        result.append(item['result'])
-        remainder = item['remainder']
-
-    # slice ending e
-    remainder = remainder[1:]
-    return {'result': result, 'remainder': remainder}