lvm-backup-reader.py

   1 import re
   2
   3 def complete(value):
   4     if value.startswith('[') and not value.endswith(']'):
   5         return False
   6     return True
   7
   8 def interpret(value):
   9     return eval(value) # good enough for now
  10
  11 class Metadata:
  12     def __init__(self, fn):
  13         self.text = open(fn, 'r').read()
  14         lines = filter(lambda l: not l.startswith("#") and not l.strip()=='', self.text.splitlines())
  15         d = {}
  16         parent = []
  17         node = d
  18         mode = 0
  19         for l in lines:
  20             if mode == 0:
  21                 if l.strip() == '}':
  22                     node = parent[-1]
  23                     del parent[-1]
  24                 elif l.strip().endswith('{'):
  25                     name = l.strip()[:-1].strip()
  26                     parent.append(node)
  27                     child = {}
  28                     node[name] = child
  29                     node = child
  30                 else:
  31                     key, value = re.search(r'\t*(\S*) = (.*?)(\s*# .*)?$', l).groups()[0:2]
  32                     if not complete(value):
  33                         mode = 1
  34                     else:
  35                         node[key] = interpret(value)
  36             elif mode == 1:
  37                 value += re.search(r'\t*(.*?)( *# .*)?$', l).group(0).strip()
  38                 if complete(value):
  39                     node[key] = interpret(value)
  40                     mode = 0
  41         self.d = d
  42
  43 import pprint
  44 pprint.pprint(Metadata('xenvg-backup').d)