settings: Add a reload method

This patch does a bit of refactoring to the Settings class for it's
setup, and adds a reload method. The refactoring encapsulates the
handling of NoneType for the read_*config methods, and reworks the
constructor just a bit so that it doesn't rely on calling methods to
create instance variables.

The end result is slightly cleaner, and will be useful for adding a
reload command to alot itself.

1 files changed, 7 insertions, 5 deletions

diff --git a/alot/__main__.py b/alot/__main__.py
index 48826f53..aba380ba 100644
--- a/alot/__main__.py
+++ b/alot/__main__.py
@@ -95,14 +95,16 @@ def main():
         alotconfig = os.path.join(
             os.environ.get('XDG_CONFIG_HOME', os.path.expanduser('~/.config')),
             'alot', 'config')
-        if not os.path.exists(alotconfig):
-            alotconfig = None
+        if os.path.exists(alotconfig):
+            settings.alot_rc_path = alotconfig
     else:
-        alotconfig = options.config
+        settings.alot_rc_path = options.config
+
+    settings.notmuch_rc_path = options.notmuch_config
 
     try:
-        settings.read_config(alotconfig)
-        settings.read_notmuch_config(options.notmuch_config)
+        settings.read_config()
+        settings.read_notmuch_config()
     except (ConfigError, OSError, IOError) as e:
         sys.exit(e)