Added a license file reading routine

Author: orbingol

python/utilities.py

@@ -0,0 +1,33 @@
+"""
+    Helper Functions for the Python 3 wrapper module for Spatial Corporation's 3D ACIS Modeler
+
+    ACIS and SAT are registered trademarks of Spatial Corporation.
+
+    The Python module is developed by Onur R. Bingol and released under MIT license.
+    Please see the LICENSE file for details.
+"""
+
+import re
+
+
+def read_spa_license_key(filename=''):
+    regex_seq = re.compile(r'\s?\"(.*)\"')
+
+    license_text = ""
+    search_obj = None
+
+    try:
+        with open(filename, 'r') as fp:
+            license_code = fp.read()
+            search_obj = regex_seq.finditer(license_code.strip())
+            fp.close()
+    except IOError:
+        raise IOError('Cannot open file: ' + filename)
+
+    if search_obj:
+        for line in search_obj:
+            license_text = license_text + line.group(1)
+    else:
+        raise ValueError('The file "' + filename + '" does not contain the unlock key!')
+
+    return license_text