Source Code for Module conary.build.buildinfo

 1  # 
 2  # Copyright (c) 2004-2008 rPath, Inc. 
 3  # 
 4  # This program is distributed under the terms of the Common Public License, 
 5  # version 1.0. A copy of this license should have been distributed with this 
 6  # source file in a file called LICENSE. If it is not present, the license 
 7  # is always available at http://www.rpath.com/permanent/licenses/CPL-1.0. 
 8  # 
 9  # This program is distributed in the hope that it will be useful, but 
10  # without any warranty; without even the implied warranty of merchantability 
11  # or fitness for a particular purpose. See the Common Public License for 
12  # full details. 
13  # 
14   
15  """  
16  Contains information gathered during cooking, to be used mostly if the cook  
17  failed in order to resume using the same destdir 
18  """ 
19   
20  import time 
21   
22 -class BuildInfo(dict): 
23   
24 -    def __init__(self, builddir): 
25          self.__builddir = builddir 
26          self.__infofile = builddir + "/conary-build-info" 
27          self.__fd = None 
28   
29 -    def __del__(self): 
30          if self.__fd: 
31              self.stop() 
32   
33 -    def read(self): 
34          # don't catch this error 
35          self.__fd = open(self.__infofile, "r") 
36          lines = self.__fd.readlines() 
37          self.__fd.close() 
38          for line in lines: 
39              if line == '\n': 
40                  continue 
41              (key, value) = line.split(None, 1) 
42              #handle macros.foo  
43              keys = key.split('.') 
44              if len(keys) > 1: 
45                  subdicts = keys[:-1] 
46                  key = keys[-1] 
47                  curdict = self 
48                  for subdict in subdicts: 
49                      if subdict not in curdict: 
50                          curdict[subdict] = {} 
51                      curdict = curdict[subdict] 
52                  #unescape \\ and \n 
53                  value = value.replace('\\\\', '\0') 
54                  value = value.replace('\\n', '\n') 
55                  value = value.replace('\0', '\\') 
56                  curdict[key] = value[:-1] 
57              else: 
58                  #unescape \\ and \n 
59                  value = value.replace('\\\\', '\0') 
60                  value = value.replace('\\n', '\n') 
61                  value = value.replace('\0', '\\') 
62                  self[key] = value[:-1] 
63   
64 -    def begin(self): 
65          self.__fd = open(self.__infofile, "w") 
66          tm = time.time() 
67          tmstr = time.asctime() 
68          self.start = "%s (%s)" % (tm, tmstr) 
69   
70 -    def write(self, str): 
71          self.__fd.write(str) 
72          self.__fd.flush() 
73   
74 -    def stop(self): 
75          tm = time.time() 
76          tmstr = time.asctime() 
77          self.end = "%s (%s)" % (tm, tmstr) 
78          self.__fd.close() 
79          self.__fd = None 
80   
81 -    def __setattr__(self, name, value): 
82          # Note that using buildinfo.foo = y 
83          # causes foo to be written to file, while using buildinfo['foo'] = y 
84          # does not 
85          if not name.startswith('_BuildInfo_'): 
86              #escape \\ and \n 
87              value = str(value).replace('\\', '\\\\') 
88              value = value.replace('\n', '\\n') 
89              self.write('%s %s\n' % (name,value)) 
90          self[name] = value 
91   
92 -    def __getattr__(self, name): 
93          return self[name] 
94