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-rw-r--r--src/Xmobar/App/Config.hs33
1 files changed, 18 insertions, 15 deletions
diff --git a/src/Xmobar/App/Config.hs b/src/Xmobar/App/Config.hs
index 431ee10..8c2bef8 100644
--- a/src/Xmobar/App/Config.hs
+++ b/src/Xmobar/App/Config.hs
@@ -1,7 +1,7 @@
------------------------------------------------------------------------------
-- |
-- Module: Xmobar.Config.Defaults
--- Copyright: (c) 2018 Jose Antonio Ortega Ruiz
+-- Copyright: (c) 2018, 2019 Jose Antonio Ortega Ruiz
-- License: BSD3-style (see LICENSE)
--
-- Maintainer: jao@gnu.org
@@ -21,6 +21,8 @@ module Xmobar.App.Config (defaultConfig,
xmobarDataDir,
xmobarConfigFile) where
+import Control.Monad (when)
+
import System.Environment
import System.Directory
import System.FilePath ((</>))
@@ -79,10 +81,10 @@ defaultConfig =
--
-- The first directory that exists will be used. If none of the
-- directories exist then (1) will be used if it is set, otherwise (2)
--- will be used. Either way, a directory will be created if necessary.
+-- will be used.
xmobarConfigDir :: IO String
xmobarConfigDir =
- findFirstDirWithEnv "XMOBAR_CONFIG_DIR"
+ findFirstDirWithEnv False "XMOBAR_CONFIG_DIR"
[ getAppUserDataDirectory "xmobar"
, getXdgDirectory XdgConfig "xmobar"
]
@@ -103,24 +105,25 @@ xmobarConfigDir =
-- necessary.
xmobarDataDir :: IO String
xmobarDataDir =
- findFirstDirWithEnv "XMOBAR_DATA_DIR"
+ findFirstDirWithEnv True "XMOBAR_DATA_DIR"
[ getAppUserDataDirectory "xmobar"
, getXdgDirectory XdgData "xmobar"
]
-- | Helper function that will find the first existing directory and
--- return its path. If none of the directories can be found, create
--- and return the first from the list. If the list is empty this
--- function returns the historical @~\/.xmobar@ directory.
-findFirstDirOf :: [IO FilePath] -> IO FilePath
-findFirstDirOf [] = findFirstDirOf [getAppUserDataDirectory "xmobar"]
-findFirstDirOf possibles = do
+-- return its path. If none of the directories can be found,
+-- optionally create and return the first from the list. If the list
+-- is empty this function returns the historical @~\/.xmobar@
+-- directory.
+findFirstDirOf :: Bool -> [IO FilePath] -> IO FilePath
+findFirstDirOf create [] = findFirstDirOf create [getAppUserDataDirectory "xmobar"]
+findFirstDirOf create possibles = do
found <- go possibles
case found of
Just path -> return path
Nothing -> do
primary <- head possibles
- createDirectoryIfMissing True primary
+ when create (createDirectoryIfMissing True primary)
return primary
where
go [] = return Nothing
@@ -130,12 +133,12 @@ findFirstDirOf possibles = do
-- | Simple wrapper around @findFirstDirOf@ that allows the primary
-- path to be specified by an environment variable.
-findFirstDirWithEnv :: String -> [IO FilePath] -> IO FilePath
-findFirstDirWithEnv envName paths = do
+findFirstDirWithEnv :: Bool -> String -> [IO FilePath] -> IO FilePath
+findFirstDirWithEnv create envName paths = do
envPath' <- lookupEnv envName
case envPath' of
- Nothing -> findFirstDirOf paths
- Just envPath -> findFirstDirOf (return envPath:paths)
+ Nothing -> findFirstDirOf create paths
+ Just envPath -> findFirstDirOf create (return envPath:paths)
xmobarConfigFile :: IO (Maybe FilePath)
xmobarConfigFile =