Added the parser of section [General]

Parsing of two optional parameters (BASENAME and EFERMI) from section [General] from the config-file
is implemented. If this section is not found the parameters are set to their
default values, which is 'vasp' for BASENAME and nothing for EFERMI.
Appropriate test is added to the 'inpconf' test suite.

python/converters/vasp/python/inpconf.py

@@ -68,6 +68,9 @@ class ConfigParameters:
             'normalize' : ('normalize', self.parse_string_logical, True),
             'normion' : ('normion', self.parse_string_logical, False)}
 
+        self.gen_optional = {
+            'basename' : ('basename', str, 'vasp'),
+            'efermi' : ('efermi', float)}
 
 #
 # Special parsers
@@ -177,7 +180,7 @@ class ConfigParameters:
             key = param_set[par][0]
             try:
                 par_str = self.cp.get(section, par)
-            except ConfigParser.NoOptionError:
+            except (ConfigParser.NoOptionError, ConfigParser.NoSectionError):
                 if exception:
                     message = "Required parameter '%s' not found in section [%s]"%(par, section)
                     raise Exception(message)
@@ -438,8 +441,18 @@ class ConfigParameters:
         """
         Parses [General] section.
         """
-# TODO: write the parser
-        pass
+        self.general = {}
+        sections = self.cp.sections()
+        gen_section = filter(lambda s: s.lower() == 'general', sections)
+# If no [General] section is found parse a dummy section name to the parser
+# to reset parameters to their default values
+        if len(gen_section) > 1:
+            raise Exception("More than one section [General] is found")
+        if len(gen_section) == 0:
+            gen_section = 'general'
+        gen_section = gen_section[0]
+        parsed = self.parse_parameter_set(gen_section, self.gen_optional, exception=False)
+        self.general.update(parsed)
 
 ################################################################################
 #

python/converters/vasp/test/_inpconf/example.cfg

@@ -1,4 +1,6 @@
 [General]
+BASENAME = test_base
+EFERMI = 0.1
 
 [Group 1]
 SHELLS = 1 2

python/converters/vasp/test/_inpconf/test_general.py

@@ -0,0 +1,32 @@
+r"""
+Tests of 'parse_general()' defined in ConfigParameters class
+"""
+import arraytest
+import numpy as np
+from inpconf import ConfigParameters
+
+################################################################################
+#
+# TestParseGeneral
+#
+################################################################################
+class TestParseGeneral(arraytest.ArrayTestCase):
+    """
+    Function:
+
+    def parse_general(self)
+
+    Scenarios:
+
+    - **if** a correct [General] section is defined **return** a dictionary
+    """
+# Scenario 1
+    def test_example(self):
+        conf_pars = ConfigParameters('example.cfg')
+        conf_pars.parse_general()
+        res = conf_pars.general
+        expected = {'basename': 'test_base', 'efermi': 0.1}
+        self.assertDictEqual(res, expected)
+
+
+