import Data.Maybe ( fromMaybe )
import Data.Monoid ( Monoid(..) )
import Data.Typeable ( Typeable )
+import Paths_halcyon ( getSysconfDir )
+import System.Directory ( getHomeDirectory )
+import System.FilePath ( (</>) )
+import System.IO ( hPutStrLn, stderr )
+import System.IO.Error ( catchIOError )
import Usernames ( Usernames(..) )
then cfg1
else cfg2
+
+-- | Obtain an 'OptionalCfg' from halcyonrc in either the global
+-- configuration directory or the user's home directory. The one in
+-- $HOME is prefixed by a dot so that it is hidden.
+--
+-- We make an attempt at cross-platform compatibility; we will try
+-- to find the correct directory even on Windows. But if the calls
+-- to getHomeDirectory/getSysconfDir fail for whatever reason, we
+-- fall back to using the Unix-specific /etc and $HOME.
+--
from_rc :: IO OptionalCfg
from_rc = do
- cfg <- DC.load [ DC.Optional "$(HOME)/.halcyonrc" ]
+ etc <- catchIOError getSysconfDir (\e -> do
+ hPutStrLn stderr (show e)
+ return "/etc")
+ home <- catchIOError getHomeDirectory (\e -> do
+ hPutStrLn stderr (show e)
+ return "$(HOME)")
+ let global_config_path = etc </> "halcyonrc"
+ let user_config_path = home </> ".halcyonrc"
+ cfg <- DC.load [ DC.Optional global_config_path,
+ DC.Optional user_config_path ]
+
cfg_consumer_key <- DC.lookup cfg "consumer-key"
cfg_consumer_secret <- DC.lookup cfg "consumer-secret"
cfg_access_token <- DC.lookup cfg "access-token"