Configuration: Added new way to disable namelist groups (.hide)

Namelist groups may be disabled by setting the special variable '.hide' to 'true'. This allows to selectively re-enable groups in higher order config files by setting '.hide' to 'false'

CHANGES.txt

@@ -15,6 +15,13 @@ Global
 * Changed version info to be retrieved from version control system.
   This requires an additional 'make' step before running
 
+Configuration
+-------------
+
+* Added new way to disable namelist groups by setting the special variable
+  '.hide' to 'true'. This allows to selectively re-enable groups in higher
+  order config files by setting '.hide' to 'false'
+
 Templates
 ---------
 

mkexp

@@ -169,8 +169,9 @@ def format_namelist(section, group=None):
     iterator = {group: section[group]}.iteritems() if group else section.iteritems()
     for group, contents in iterator:
         if isinstance(contents, dict):
+            hidden = is_set(contents.get('.hide', 'false'))
             group_id = group.lower()
-            if not any(map(lambda x: re.match(x, group_id), black_list)):
+            if not hidden and not any(map(lambda x: re.match(x, group_id), black_list)):
                 # Create list of removed keys
                 remove_keys = get_remove_list(contents, '.remove')
                 group_names = group_id.split(' ', 1)
@@ -179,7 +180,7 @@ def format_namelist(section, group=None):
                 else:
                     lines.write('&'+group_names[0]+" ! '"+group_names[1]+"'\n")
                 for key, value in contents.iteritems():
-                    if key not in remove_keys:
+                    if key[0] != '.' and key not in remove_keys:
                         key = key.lower()
                         indent = base_indent + len(key) + 3
                         for line in contents.comments.get(key, []):

test.py

@@ -525,6 +525,29 @@ class NamelistTestCase(MkexpSimpleTestCase):
                    value = 43
         """)
 
+    def test_namelist_hide(self):
+        self.run_test("""
+            %{NAMELIST}
+        """, """
+            &group1
+                value = 41
+            /
+            &group3
+                value = 43
+            /
+        """, """
+            [namelists]
+              [[namelist]]
+                [[[group1]]]
+                   value = 41
+                [[[group2]]]
+                   .hide = true
+                   value = 42
+                [[[group3]]]
+                   .hide = dont_care_if_we_dont_start_with_t
+                   value = 43
+        """)
+
 class JinjaTemplateTestCase(MkexpSimpleTestCase):
 
     def test_ignore_blocks(self):