Source Code for Module paramiko.compress

 1  # Copyright (C) 2003-2007  Robey Pointer <robey@lag.net> 
 2  # 
 3  # This file is part of paramiko. 
 4  # 
 5  # Paramiko is free software; you can redistribute it and/or modify it under the 
 6  # terms of the GNU Lesser General Public License as published by the Free 
 7  # Software Foundation; either version 2.1 of the License, or (at your option) 
 8  # any later version. 
 9  # 
10  # Paramiko is distrubuted in the hope that it will be useful, but WITHOUT ANY 
11  # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR 
12  # A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more 
13  # details. 
14  # 
15  # You should have received a copy of the GNU Lesser General Public License 
16  # along with Paramiko; if not, write to the Free Software Foundation, Inc., 
17  # 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA. 
18   
19  """ 
20  Compression implementations for a Transport. 
21  """ 
22   
23  import zlib 
24   
25   
26 -class ZlibCompressor (object): 
27 -    def __init__(self): 
28          self.z = zlib.compressobj(9) 
29   
30 -    def __call__(self, data): 
31          return self.z.compress(data) + self.z.flush(zlib.Z_FULL_FLUSH) 
32   
33   
34 -class ZlibDecompressor (object): 
35 -    def __init__(self): 
36          self.z = zlib.decompressobj() 
37   
38 -    def __call__(self, data): 
39          return self.z.decompress(data) 
40