From 4c1a6b350095e671eea5a4963e6b82997c5098fc Mon Sep 17 00:00:00 2001
From: Martin Perner <martin@perner.cc>
Date: Thu, 21 Jul 2011 18:13:32 +0200
Subject: DateZone: Added plugin for localized date

---
 README                  | 14 ++++++++++++++
 src/Config.hs           |  7 +++++++
 src/Plugins/DateZone.hs | 44 ++++++++++++++++++++++++++++++++++++++++++++
 xmobar.cabal            |  9 +++++++++
 4 files changed, 74 insertions(+)
 create mode 100644 src/Plugins/DateZone.hs

diff --git a/README b/README
index 2253c1f..626130d 100644
--- a/README
+++ b/README
@@ -124,6 +124,10 @@ Otherwise, you'll need to install them yourself.
 :    Support for ALSA sound cards. Enables the Volume plugin. Requires the
      [alsa-mixer] package.
 
+`with_datezone`
+:    Support for localized times. Enables the DateZone plugin. Requires
+     [timezone-olson] and [timezone-series] package.
+
 `all_extensions`
 :    Enables all the extensions above.
 
@@ -846,6 +850,16 @@ can be used in the output template as `%mydate%`
   `strftime` function (or Haskell's `formatCalendarTime`).
 - Sample usage: `Run Date "%a %b %_d %Y <fc=#ee9a00>%H:%M:%S</fc>" "date" 10`
 
+`Date Format Alias Zone RefreshRate`
+
+- Format is a time format string, as accepted by the standard ISO C
+  `strftime` function (or Haskell's `formatCalendarTime`).
+- Zone is the name of the TimeZone. Assumes that the tz database is stored in
+  /usr/share/zoneinfo/
+- Sample usage:
+  `Run DateZone "<fc=#ee9a00>%H:%M:%S</fc>" "viennaDate" "Europa/Vienna" 10`
+
+
 `CommandReader "/path/to/program" Alias`
 
 - Runs the given program, and displays its standard output.
diff --git a/src/Config.hs b/src/Config.hs
index 6eb55a0..3184023 100644
--- a/src/Config.hs
+++ b/src/Config.hs
@@ -38,6 +38,10 @@ import Plugins.Mail
 import Plugins.MBox
 #endif
 
+#ifdef DATEZONE
+import Plugins.DateZone
+#endif
+
 -- $config
 -- Configuration data type and default configuration
 
@@ -111,6 +115,9 @@ infixr :*:
 runnableTypes :: Command :*: Monitors :*: Date :*: PipeReader :*: CommandReader :*: StdinReader :*: XMonadLog :*: EWMH :*:
 #ifdef INOTIFY
                  Mail :*: MBox :*:
+#endif
+#ifdef DATEZONE
+                 DateZone :*:
 #endif
                  ()
 runnableTypes = undefined
diff --git a/src/Plugins/DateZone.hs b/src/Plugins/DateZone.hs
new file mode 100644
index 0000000..4d5ce6a
--- /dev/null
+++ b/src/Plugins/DateZone.hs
@@ -0,0 +1,44 @@
+-----------------------------------------------------------------------------
+-- |
+-- Module      :  Plugins.DateZone
+-- Copyright   :  (c) Martin Perner
+-- License     :  BSD-style (see LICENSE)
+--
+-- Maintainer  :  Martin Perner <martin@perner.cc>
+-- Stability   :  unstable
+-- Portability :  unportable
+--
+-- A date plugin with localization support for Xmobar
+--
+-- Based on Plugins.Date
+--
+-- Usage example: in template put
+--
+-- > Run DateZone "%H:%M:%S" "utcDate" "UTC" 10
+--
+-----------------------------------------------------------------------------
+
+module Plugins.DateZone (DateZone(..)) where
+
+import Plugins
+
+import System.Locale
+
+import Data.Time.LocalTime
+import Data.Time.Format
+import Data.Time.LocalTime.TimeZone.Olson
+import Data.Time.LocalTime.TimeZone.Series
+
+data DateZone = DateZone String String String Int
+    deriving (Read, Show)
+
+instance Exec DateZone where
+    alias (DateZone _ a _ _) = a
+    run   (DateZone f _ z _) = date f z
+    rate  (DateZone _ _ _ r) = r
+
+date :: String -> String -> IO String
+date format zone = do
+  timeZone <- getTimeZoneSeriesFromOlsonFile ("/usr/share/zoneinfo/" ++ zone)
+  zonedTime <- getZonedTime
+  return $ formatTime defaultTimeLocale format $ utcToLocalTime' timeZone $ zonedTimeToUTC zonedTime
diff --git a/xmobar.cabal b/xmobar.cabal
index abdf136..ecafe1d 100644
--- a/xmobar.cabal
+++ b/xmobar.cabal
@@ -57,6 +57,10 @@ flag with_alsa
   description: Use alsa-mixer to get the volume from soundcards.
   default: False
 
+flag with_datezone
+  description: Enables localized date support
+  default: False
+
 executable xmobar
     hs-source-dirs:     src
     main-is:            Main.hs
@@ -120,3 +124,8 @@ executable xmobar
        build-depends: alsa-mixer == 0.1.*
        other-modules: Plugins.Monitors.Volume
        cpp-options: -DALSA
+
+    if flag(with_datezone) || flag(all_extensions)
+       build-depends: timezone-olson, timezone-series
+       other-modules: Plugins.DateZone
+       cpp-options: -DDATEZONE
-- 
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