Add autoprogram_cliff_app_dist_name config opt

This allows consumers to let cliff know who they are, so the
autoprogram-sphinx directive doesn't produce messages like

 This command is provided by the $me plugin.

Change-Id: I2d5a527910ddc64f83d0cba39c584b8b05a299b7

3 files changed, 16 insertions, 2 deletions

diff --git a/cliff/command.py b/cliff/command.py
index c020edc..35f1ef7 100644
--- a/cliff/command.py
+++ b/cliff/command.py
@@ -137,8 +137,10 @@ class Command(object):
             (h.obj.get_epilog() for h in self._hooks),
         )
         parts.extend(hook_epilogs)
-        app_dist_name = _get_distribution_for_module(
-            inspect.getmodule(self.app)
+        app_dist_name = getattr(
+            self, 'app_dist_name', _get_distribution_for_module(
+                inspect.getmodule(self.app)
+            )
         )
         dist_name = _get_distribution_for_module(inspect.getmodule(self))
         if dist_name and dist_name != app_dist_name:
diff --git a/cliff/sphinxext.py b/cliff/sphinxext.py
index 8a9a2e6..265cccc 100644
--- a/cliff/sphinxext.py
+++ b/cliff/sphinxext.py
@@ -322,6 +322,9 @@ class AutoprogramCliffDirective(rst.Directive):
         :returns: A list of nested docutil nodes
         """
         command = command_class(None, None)
+        if not getattr(command, 'app_dist_name', None):
+            command.app_dist_name = (
+                self.env.config.autoprogram_cliff_app_dist_name)
         parser = command.get_parser(command_name)
         ignored_opts = ignored_opts or []
 
@@ -375,3 +378,4 @@ def setup(app):
     app.add_directive('autoprogram-cliff', AutoprogramCliffDirective)
     app.add_config_value('autoprogram_cliff_application', '', True)
     app.add_config_value('autoprogram_cliff_ignored', ['--help'], True)
+    app.add_config_value('autoprogram_cliff_app_dist_name', None, True)
diff --git a/doc/source/user/sphinxext.rst b/doc/source/user/sphinxext.rst
index ae1cabe..46ac97e 100644
--- a/doc/source/user/sphinxext.rst
+++ b/doc/source/user/sphinxext.rst
@@ -125,6 +125,14 @@ Directive
 
      .. seealso:: The ``:ignored:`` directive option.
 
+   `autoprogram_cliff_app_dist_name`
+     The name of the python distribution (the name used with pip, as opposed to
+     the package name used for importing) providing the commands/applications
+     being documented. Generated documentation for plugin components includes
+     a message indicating the name of the plugin. Setting this option tells
+     cliff the name of the distribution providing components natively so their
+     documentation does not include this message.
+
 .. seealso::
 
     Module `sphinxcontrib.autoprogram`