#!/usr/bin/env python

# -*- coding: utf-8 -*-

# java2python.config -> subpackage for run-time configuration.

from functools import reduce

from imp import load_source

from os import path

class Config(object):

""" Config -> wraps multiple configuration modules. """

def __init__(self, names):

self.configs = [self.load(name) for name in names]

def every(self, key, default=None):

""" Returns the value at the given key from each config module. """

return [getattr(config, key, default) for config in self.configs]

def last(self, key, default=None):

""" Returns the value at the key from the last config defining it. """

for config in reversed(self.configs):

if hasattr(config, key):

return getattr(config, key)

return default

@staticmethod

def load(name):

""" Imports and returns a module from dotted form or filename. """

if path.exists(name):

mod = load_source(str(hash(name)), name)

else:

mod = reduce(getattr, name.split('.')[1:], __import__(name))

return mod