new_contents: # Utilities
  #
  # Copyright (c) 2012, Gustav Tiger <gustav@tiger.name>
  #
  # Permission is hereby granted, free of charge, to any person obtaining a
  # copy of this software and associated documentation files (the "Software"),
  # to deal in the Software without restriction, including without limitation
  # the rights to use, copy, modify, merge, publish, distribute, sublicense,
  # and/or sell copies of the Software, and to permit persons to whom the
  # Software is furnished to do so, subject to the following conditions:
  #
  # The above copyright notice and this permission notice shall be included in
  # all copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  # DEALINGS IN THE SOFTWARE.
  
  import errno
  import os
  
  def makedirs_if_not_exists(path):
      try:
          os.makedirs(path)
      except OSError as e:
          if e.errno == errno.EEXIST:
              pass
          else: 
              raise
  
  
  class XDGError(Exception):
      
      def __init__(self, message):
          self.message = message
  
  class XDG:
  
      def __init__(self, application):
          self._application = application
  
      def get_data_dir(self):
          if "XDG_DATA_HOME" in os.environ:
              return os.path.join(os.environ["XDG_DATA_HOME"], self._application)
          elif "HOME" in os.environ:
              return os.path.join(os.environ["HOME"], ".local/share", self._application)
          else:
              raise XDGError("Neither XDG_DATA_HOME nor HOME found in the environment")
          
      def get_config_dir(self):
          if "XDG_CONFIG_HOME" in os.environ:
              return os.path.join(os.environ["XDG_CONFIG_HOME"], self._application)
          elif "HOME" in os.environ:
              return os.path.join(os.environ["HOME"], ".config", self._application)
          else:
              raise XDGError("Neither XDG_CONFIG_HOME nor HOME found in the environment")
  
  
subject: Add XDG Module