# -*- coding: utf-8 -*-
 
 ## Amazon S3 manager
 ## Author: Michal Ludvig <michal@logix.cz>
 ##         http://www.logix.cz/michal
 ## License: GPL Version 2
 ## Copyright: TGRMN Software and contributors
 
 class BidirMap(object):
     def __init__(self, **map):
         self.k2v = {}
         self.v2k = {}
         for key in map:
             self.__setitem__(key, map[key])
 
     def __setitem__(self, key, value):
         if value in self.v2k:
             if self.v2k[value] != key:
                 raise KeyError("Value '"+str(value)+"' already in use with key '"+str(self.v2k[value])+"'")
         try:
             del(self.v2k[self.k2v[key]])
         except KeyError:
             pass
         self.k2v[key] = value
         self.v2k[value] = key
 
     def __getitem__(self, key):
         return self.k2v[key]
 
     def __str__(self):
         return self.v2k.__str__()
 
     def getkey(self, value):
         return self.v2k[value]
 
     def getvalue(self, key):
         return self.k2v[key]
 
     def keys(self):
         return [key for key in self.k2v]
 
     def values(self):
         return [value for value in self.v2k]
 
 # vim:et:ts=4:sts=4:ai