Adding locale support to Date plugins

This commits adds support for localized datetime outputs like date(1).

1 files changed, 42 insertions, 0 deletions

diff --git a/src/Plugins/DateZoneL.hs b/src/Plugins/DateZoneL.hs
new file mode 100644
index 0000000..2b7c467
--- /dev/null
+++ b/src/Plugins/DateZoneL.hs
@@ -0,0 +1,42 @@
+-----------------------------------------------------------------------------
+-- |
+-- Module      :  Plugins.DateZoneL
+-- Copyright   :  (c) Martin Perner
+-- License     :  BSD-style (see LICENSE)
+--
+-- Maintainer  :  Martin Perner <martin@perner.cc>
+-- Stability   :  unstable
+-- Portability :  unportable
+--
+-- A date plugin with localization and location support for Xmobar
+--
+-- Based on Plugins.DateZone
+--
+-----------------------------------------------------------------------------
+
+module Plugins.DateZoneL (DateZoneL(..)) where
+
+import Plugins
+
+import Localize
+
+import Data.Time.LocalTime
+import Data.Time.Format
+import Data.Time.LocalTime.TimeZone.Olson
+import Data.Time.LocalTime.TimeZone.Series
+
+data DateZoneL = DateZoneL String String String String Int
+    deriving (Read, Show)
+
+instance Exec DateZoneL where
+    alias (DateZoneL _ _ a _ _) = a
+    start (DateZoneL f l _ z r) cb = do
+      setupTimeLocale l
+      go
+        where go = date f z >>= cb >> tenthSeconds r >> go
+
+date :: String -> String -> IO String
+date format zone = do
+  timeZone <- getTimeZoneSeriesFromOlsonFile ("/usr/share/zoneinfo/" ++ zone)
+  zonedTime <- getZonedTime
+  return $ formatTime getTimeLocale format $ utcToLocalTime' timeZone $ zonedTimeToUTC zonedTime