#!/usr/bin/env python
"""
schemes/__init__.py - Emano Schemes Class
Author: Sean B. Palmer, inamidst.com
Source: http://inamidst.com/emano/
"""

class Schemes(object): 
   def __init__(self): 
      self.__schemes = {}

   def __getitem__(self, item): 
      if self.__schemes.has_key(item): 
         return self.__schemes[item]

      try: module = getattr(__import__('schemes.' + item), item)
      except ImportError: return False

      self.__schemes[item] = module
      return module

   def read(self, scheme): 
      module = self[scheme]
      if not module: return False
      if not hasattr(module, 'read'): 
         return False
      return getattr(module, 'read')

   def write(self, scheme): 
      module = self[scheme]
      if not module: return False
      if not hasattr(module, 'write'): 
         return False
      return getattr(module, 'write')

if __name__=="__main__": 
   main()