From e37daadaffd9324bd193d4218229b173a8fc0d5f Mon Sep 17 00:00:00 2001
From: Philip Eisenlohr <eisenlohr@egr.msu.edu>
Date: Thu, 12 Dec 2019 14:49:16 -0500
Subject: [PATCH] restored environment functionality

---
 python/damask/__init__.py    |  1 +
 python/damask/environment.py | 29 +++++++++++++++++++++++++++++
 2 files changed, 30 insertions(+)
 create mode 100644 python/damask/environment.py

diff --git a/python/damask/__init__.py b/python/damask/__init__.py
index 34a1bbbdd..b0966b45f 100644
--- a/python/damask/__init__.py
+++ b/python/damask/__init__.py
@@ -6,6 +6,7 @@ with open(os.path.join(os.path.dirname(__file__),'VERSION')) as f:
     version = f.readline().strip()
 
 # classes
+from .environment import Environment      # noqa
 from .table       import Table            # noqa
 from .asciitable  import ASCIItable       # noqa
     
diff --git a/python/damask/environment.py b/python/damask/environment.py
new file mode 100644
index 000000000..b00086b96
--- /dev/null
+++ b/python/damask/environment.py
@@ -0,0 +1,29 @@
+import os
+import re
+
+class Environment():
+    __slots__ = [ \
+                  'options',
+                ]
+
+    def __init__(self):
+        """Read and provide values of DAMASK configuration."""
+        self.options = {}
+        self.get_options()
+
+    def relPath(self,relative = '.'):
+        return os.path.join(self.rootDir(),relative)
+
+    def rootDir(self):
+        return os.path.normpath(os.path.join(os.path.realpath(__file__),'../../../'))
+
+    def get_options(self):
+        with open(self.relPath(self.rootDir()+'/CONFIG')) as configFile:
+            for line in configFile:
+                line = line.strip()
+                line = line[4:] if line.startswith('set ') else line                                   # remove "set" (tcsh) when setting variables
+                if line and not line.startswith('#'):
+                    items = re.split(r'\s*=\s*',line)
+                    if len(items) == 2: 
+                        self.options[items[0].upper()] = \
+                          re.sub(r'${*DAMASK_ROOT}*',self.rootDir(),os.path.expandvars(items[1]))      # expand all shell variables and DAMASK_ROOT