add an exclude option

Author: jedwards4b

manic/checkout.py

@@ -279,6 +279,9 @@ def commandline_arguments(args=None):
                         help='The externals description filename. '
                         'Default: %(default)s.')
 
+    parser.add_argument('-x', '--exclude', nargs='*',
+                        help='Component(s) listed in the externals file which should be ignored.' )
+
     parser.add_argument('-o', '--optional', action='store_true', default=False,
                         help='By default only the required externals '
                         'are checked out. This flag will also checkout the '
@@ -362,7 +365,7 @@ def main(args):
     root_dir = os.path.abspath(os.getcwd())
     external_data = read_externals_description_file(root_dir, args.externals)
     external = create_externals_description(
-        external_data, components=args.components)
+        external_data, components=args.components, exclude=args.exclude)
 
     for comp in args.components:
         if comp not in external.keys():

manic/externals_description.py

@@ -264,18 +264,18 @@ def read_gitmodules_file(root_dir, file_name):
     return externals_description
 
 def create_externals_description(
-        model_data, model_format='cfg', components=None, parent_repo=None):
+        model_data, model_format='cfg', components=None, exclude=None, parent_repo=None):
     """Create the a externals description object from the provided data
     """
     externals_description = None
     if model_format == 'dict':
         externals_description = ExternalsDescriptionDict(
-            model_data, components=components)
+            model_data, components=components, exclude=exclude)
     elif model_format == 'cfg':
         major, _, _ = get_cfg_schema_version(model_data)
         if major == 1:
             externals_description = ExternalsDescriptionConfigV1(
-                model_data, components=components, parent_repo=parent_repo)
+                model_data, components=components, exclude=exclude, parent_repo=parent_repo)
         else:
             msg = ('Externals description file has unsupported schema '
                    'version "{0}".'.format(major))
@@ -710,7 +710,7 @@ class ExternalsDescriptionDict(ExternalsDescription):
 
     """
 
-    def __init__(self, model_data, components=None):
+    def __init__(self, model_data, components=None, exclude=None):
         """Parse a native dictionary into a externals description.
         """
         ExternalsDescription.__init__(self)
@@ -725,6 +725,10 @@ def __init__(self, model_data, components=None):
             for key in model_data.items():
                 if key not in components:
                     del model_data[key]
+        if exclude:
+            for key in model_data.items():
+                if key in exclude:
+                    del model_data[key]
 
         self.update(model_data)
         self._check_user_input()
@@ -736,7 +740,7 @@ class ExternalsDescriptionConfigV1(ExternalsDescription):
 
     """
 
-    def __init__(self, model_data, components=None, parent_repo=None):
+    def __init__(self, model_data, components=None, exclude=None, parent_repo=None):
         """Convert the config data into a standardized dict that can be used to
         construct the source objects
 
@@ -749,7 +753,7 @@ def __init__(self, model_data, components=None, parent_repo=None):
             get_cfg_schema_version(model_data)
         self._verify_schema_version()
         self._remove_metadata(model_data)
-        self._parse_cfg(model_data, components=components)
+        self._parse_cfg(model_data, components=components, exclude=exclude)
         self._check_user_input()
 
     @staticmethod
@@ -761,7 +765,7 @@ def _remove_metadata(model_data):
         """
         model_data.remove_section(DESCRIPTION_SECTION)
 
-    def _parse_cfg(self, cfg_data, components=None):
+    def _parse_cfg(self, cfg_data, components=None, exclude=None):
         """Parse a config_parser object into a externals description.
         """
         def list_to_dict(input_list, convert_to_lower_case=True):
@@ -778,7 +782,7 @@ def list_to_dict(input_list, convert_to_lower_case=True):
 
         for section in cfg_data.sections():
             name = config_string_cleaner(section.lower().strip())
-            if components and name not in components:
+            if (components and name not in components) or (exclude and name in exclude):
                 continue
             self[name] = {}
             self[name].update(list_to_dict(cfg_data.items(section)))