Source Code for Module SCons.compat._scons_hashlib

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23   
24  __doc__ = """ 
25  hashlib backwards-compatibility module for older (pre-2.5) Python versions 
26   
27  This does not not NOT (repeat, *NOT*) provide complete hashlib 
28  functionality.  It only wraps the portions of MD5 functionality used 
29  by SCons, in an interface that looks like hashlib (or enough for our 
30  purposes, anyway).  In fact, this module will raise an ImportError if 
31  the underlying md5 module isn't available. 
32  """ 
33   
34  __revision__ = "src/engine/SCons/compat/_scons_hashlib.py 5023 2010/06/14 22:05:46 scons" 
35   
36  import md5 
37  from string import hexdigits 
38   
39 -class md5obj(object): 
40   
41      md5_module = md5 
42   
43 -    def __init__(self, name, string=''): 
44          if not name in ('MD5', 'md5'): 
45              raise ValueError("unsupported hash type") 
46          self.name = 'md5' 
47          self.m = self.md5_module.md5() 
48   
49 -    def __repr__(self): 
50          return '<%s HASH object @ %#x>' % (self.name, id(self)) 
51   
52 -    def copy(self): 
53          import copy 
54          result = copy.copy(self) 
55          result.m = self.m.copy() 
56          return result 
57   
58 -    def digest(self): 
59          return self.m.digest() 
60   
61 -    def update(self, arg): 
62          return self.m.update(arg) 
63   
64 -    def hexdigest(self): 
65          return self.m.hexdigest() 
66   
67  new = md5obj 
68   
69 -def md5(string=''): 
70      return md5obj('md5', string) 
71   
72  # Local Variables: 
73  # tab-width:4 
74  # indent-tabs-mode:nil 
75  # End: 
76  # vim: set expandtab tabstop=4 shiftwidth=4: 
77