[d-feet] Use XDG config dir

[John Palmieri <johnp src gnome org>]

commit 7f6104bbc5ab07ad309eb0e4b6b6e147efe524ec
Author: William Jon McCann <jmccann redhat com>
Date:   Sat Apr 2 22:07:26 2011 -0400

    Use XDG config dir
    
    https://bugzilla.gnome.org/show_bug.cgi?id=646542

 dfeet/settings.py |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/dfeet/settings.py b/dfeet/settings.py
index 0a1c569..537e827 100644
--- a/dfeet/settings.py
+++ b/dfeet/settings.py
@@ -104,10 +104,13 @@ class Settings:
 
         Parameters:
             filename -- path to the settings file.
-                        If None, the default ~/.dfeet/config will be used.
+                        If None, the default $XDG_CONFIG_HOME/d-feet/config will be used.
         """
         if not filename:
-            self.filename = os.path.expanduser("~/.d-feet/config")
+            if os.environ.has_key('XDG_CONFIG_HOME'):
+                self.filename = os.path.join(os.environ['XDG_CONFIG_HOME'], 'd-feet', 'config')
+            else:
+                self.filename = os.path.join(os.environ['HOME'], '.config', 'd-feet', 'config')
         else:
             self.filename = filename
         self.config = ConfigParser.ConfigParser()