om@2: #!/bin/env python
om@2: # -*- coding: utf-8 -*-
om@2: 
om@2: # ------------------------------------------------------------
om@2: # environment.py
om@2: # 
om@2: # pick some current environment infos
om@2: #
om@2: # Autor: Oliver Maurhart, <oliver.maurhart@ait.ac.at>
om@2: #
om@2: # Copyright (C) 2013 AIT Austrian Institute of Technology
om@2: # AIT Austrian Institute of Technology GmbH
om@2: # Donau-City-Strasse 1 | 1220 Vienna | Austria
om@2: # http://www.ait.ac.at
om@2: #
om@2: # This program is free software; you can redistribute it and/or
om@2: # modify it under the terms of the GNU General Public License
om@2: # as published by the Free Software Foundation version 2.
om@2: # 
om@2: # This program is distributed in the hope that it will be useful,
om@2: # but WITHOUT ANY WARRANTY; without even the implied warranty of
om@2: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
om@2: # GNU General Public License for more details.
om@2: # 
om@2: # You should have received a copy of the GNU General Public License
om@2: # along with this program; if not, write to the Free Software
om@2: # Foundation, Inc., 51 Franklin Street, Fifth Floor, 
om@2: # Boston, MA  02110-1301, USA.
om@2: # ------------------------------------------------------------
om@2: 
om@2: 
om@2: # ------------------------------------------------------------
om@2: # imports
om@2: 
om@2: import os
om@2: import os.path
om@2: import sys
om@2: 
om@2: 
om@2: # ------------------------------------------------------------
om@2: # code
om@2: 
om@2: 
om@2: class Environment(object):
om@2:     
om@2:     """Hold some nifty environment stuff in a dedicated class."""
om@2:     
om@2:     def __init__(self, application = None):
om@2:         
om@2:         # if we ain't got a path to start from, all is valid/lost
om@2:         if len(sys.path[0]) == 0:
om@2:             self.prefix_path = ''
om@2:             self.data_path = ''
om@2:             self.image_path = ''
om@2:             return
om@2:         
om@2:         # the prefix path
om@2:         #
om@2:         # - on Linux: this is ../../ to the current executable
om@2:         #   e.g. "/usr/bin/myprogram" --> "/usr"
om@2:         #
om@2:         # - on Windows: this is the installation folder
om@2:         #   e.g. "C:/Program Files/MyProgram/bin/myprogam" --> "C:/Program Files/MyProgram"
om@2:         #
om@2:         if sys.platform == 'linux2':
om@2:             self.prefix_path = os.path.split(sys.path[0])[0]
om@2:         elif sys.platform == 'win32':
om@2:             self.prefix_path = os.path.split(sys.path[0])[0]
om@2:             
om@2:         # the data path where all data files are stored
om@2:         if sys.platform == 'linux2':
om@2:             if not application is None:
om@2:                 self.data_path = os.path.join(self.prefix_path, os.path.join('share', application))
om@2:             else:
om@2:                 self.data_path = os.path.join(self.prefix_path, 'share')
om@2:         elif sys.platform == 'win32':
om@2:             self.data_path = self.prefix_path
om@2: 
om@2:         # the image path 
om@2:         if sys.platform == 'linux2':
om@2:             self.image_path = os.path.join(self.data_path, 'gfx')
om@2:         elif sys.platform == 'win32':
om@2:             self.image_path = os.path.join(self.data_path, 'gfx')
om@2: 
om@2: 
om@2: # test the module
om@2: def test():
om@2:     """Module test call."""
om@2:     
om@2:     e = Environment("opensecurity")
om@2:     print("prefix_path: {0}".format(e.prefix_path))
om@2:     print("  data_path: {0}".format(e.data_path))
om@2:     print(" image_path: {0}".format(e.image_path))
om@2: 
om@2: # standalone calls are module tests
om@2: if __name__ == '__main__':
om@2:     test()