Package dns :: Module util
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Source Code for Module dns.util

 1  # Copyright (C) 2010 Nominum, Inc. 
 2  # 
 3  # Permission to use, copy, modify, and distribute this software and its 
 4  # documentation for any purpose with or without fee is hereby granted, 
 5  # provided that the above copyright notice and this permission notice 
 6  # appear in all copies. 
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 8  # THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES 
 9  # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 
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14  # OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 
15   
16  """Miscellaneous Implementation Helpers""" 
17   
18  import struct 
19   
20 -def cmp(x, y):
21 if x > y: 22 return 1 23 elif x < y: 24 return -1 25 else: 26 return 0
27
28 -def write_uint8(bfile, value):
29 """Write an unsigned 8-bit integer to an io.BytesIO file 30 """ 31 32 bfile.write(struct.pack('B', value))
33 34
35 -def write_uint16(bfile, value):
36 """Write an unsigned 16-bit integer to an io.BytesIO file 37 """ 38 39 bfile.write(struct.pack('!H', value))
40
41 -def write_uint32(bfile, value):
42 """Write an unsigned 32-bit integer to an io.BytesIO file 43 """ 44 45 bfile.write(struct.pack('!L', value))
46 47
48 -def write_uint64(bfile, value):
49 """Write an unsigned 64-bit integer to an io.BytesIO file 50 """ 51 52 bfile.write(struct.pack('!Q', value))
53