cGmail/lib/dicthelper.py

   1 #
   2 #    Copyright (C) 2007 Marco Ferragina <marco.ferragina@gmail.com>
   3 #
   4 #    This program is free software; you can redistribute it and/or modify
   5 #    it under the terms of the GNU General Public License as published by
   6 #    the Free Software Foundation; either version 2 of the License, or
   7 #    (at your option) any later version.
   8 #
   9 #    This program is distributed in the hope that it will be useful,
  10 #    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 #    GNU General Public License for more details.
  13 #
  14 #    You should have received a copy of the GNU General Public License
  15 #    along with this program; if not, write to the Free Software
  16 #    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17
  18 from iniman import IniMan
  19
  20 class NoSuchDictException(Exception): pass
  21 class CannotSaveError(Exception): pass
  22 class CorruptedConfiguration(Exception): pass
  23
  24 class DictHelper(IniMan):
  25         def __init__(self, handler):
  26                 IniMan.__init__(self, handler)
  27                 self.__dicts = self.__retrieve_dicts()
  28
  29         def __retrieve_dicts(self):
  30                 dicts = []
  31                 sections = self.get_sections()
  32                 for sec in sections:
  33                         dic = self.get_by_section(sec)
  34                         dic["id"] = sec
  35                         dicts.append(dic)
  36                 return dicts
  37
  38         def get_dicts(self):
  39                 self.__dicts = []
  40                 self.__dicts = self.__retrieve_dicts()
  41                 return self.__dicts
  42
  43         def remove_dict(self, id):
  44                 dic = None
  45                 for tmp in self.__dicts:
  46                         if tmp["id"] == id:
  47                                 dic = tmp
  48                 if dic is None:
  49                         raise NoSuchDictException
  50                 for key, value in dic.iteritems():
  51                         self.remove(id + "." + key)
  52
  53                 self.__retrieve_dicts()
  54
  55         def add_dict(self, dic, force_id = None):
  56                 if force_id is None:
  57                         sections = self.get_sections()
  58                         maxid = 0
  59                         for sec in sections:
  60                                 if int(sec) > maxid:
  61                                         maxid = int(sec)
  62                         id = maxid + 1
  63                 else:
  64                         id = force_id
  65                 id = str(id)
  66                 self.__dicts.append(dic)
  67                 for key, value in dic.iteritems():
  68                         self.add(id + "." + key, value)
  69
  70                 return id
  71
  72         def reset(self):
  73                 sections = self.get_sections()
  74                 for sect in sections:
  75                         self.remove_dict(sect)
  76