many improvements from Vladyslav

gluon/settings.py

@@ -4,13 +4,41 @@ Copyrighted by Massimo Di Pierro <mdipierro@cs.depaul.edu>
 License: LGPLv3 (http://www.gnu.org/licenses/lgpl.html)
 """
 
+import os
+import sys
+import platform
 from storage import Storage
 
 global_settings = Storage()
 settings = global_settings  # legacy compatibility
 
-
-
-
+if not hasattr(os, 'mkdir'):
+    global_settings.db_sessions = True
+
+if global_settings.db_sessions is not True:
+    global_settings.db_sessions = set()
+
+global_settings.gluon_parent = os.environ.get('web2py_path', os.getcwd())
+
+global_settings.applications_parent = global_settings.gluon_parent
+
+global_settings.app_folders = set()
+
+global_settings.debugging = False
+
+global_settings.is_pypy = hasattr(platform,'python_implementation') and \
+                          platform.python_implementation() == 'PyPy'
+
+global_settings.is_jython = 'java' in sys.platform.lower() or \
+                            hasattr(sys, 'JYTHON_JAR') or \
+                            str(sys.copyright).find('Jython') > 0
+
+version_info = open(os.path.join(global_settings.gluon_parent, 'VERSION'), 'r')
+raw_version_string = version_info.read().strip()
+version_info.close()
+
+from fileutils import parse_version # we need fileutils import here, because
+                                    # fileutils also imports settings
+global_settings.web2py_version = parse_version(raw_version_string)