From 4d1402a1a7d87767267d48a77998e4fb13395b31 Mon Sep 17 00:00:00 2001
From: Pavan Rikhi <pavan.rikhi@gmail.com>
Date: Sat, 17 Mar 2018 22:48:24 -0400
Subject: Split Modules into Library & Executable Structure

Move the Main module to a new `app` directory. All other modules have
been nested under the `Xmobar` name. Lots of module headers & imports
were updated.
---
 src/Xmobar/Plugins/Monitors/CpuFreq.hs | 44 ++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 src/Xmobar/Plugins/Monitors/CpuFreq.hs

(limited to 'src/Xmobar/Plugins/Monitors/CpuFreq.hs')

diff --git a/src/Xmobar/Plugins/Monitors/CpuFreq.hs b/src/Xmobar/Plugins/Monitors/CpuFreq.hs
new file mode 100644
index 0000000..1afedfa
--- /dev/null
+++ b/src/Xmobar/Plugins/Monitors/CpuFreq.hs
@@ -0,0 +1,44 @@
+-----------------------------------------------------------------------------
+-- |
+-- Module      :  Plugins.Monitors.CpuFreq
+-- Copyright   :  (c) Juraj Hercek
+-- License     :  BSD-style (see LICENSE)
+--
+-- Maintainer  :  Juraj Hercek <juhe_haskell@hck.sk>
+-- Stability   :  unstable
+-- Portability :  unportable
+--
+-- A cpu frequency monitor for Xmobar
+--
+-----------------------------------------------------------------------------
+
+module Xmobar.Plugins.Monitors.CpuFreq where
+
+import Xmobar.Plugins.Monitors.Common
+import Xmobar.Plugins.Monitors.CoreCommon
+
+-- |
+-- Cpu frequency default configuration. Default template contains only
+-- one core frequency, user should specify custom template in order to
+-- get more cpu frequencies.
+cpuFreqConfig :: IO MConfig
+cpuFreqConfig =
+  mkMConfig "Freq: <cpu0>" (map ((++) "cpu" . show) [0 :: Int ..])
+
+
+-- |
+-- Function retrieves monitor string holding the cpu frequency (or
+-- frequencies)
+runCpuFreq :: [String] -> Monitor String
+runCpuFreq _ = do
+  suffix <- getConfigValue useSuffix
+  ddigits <- getConfigValue decDigits
+  let path = ["/sys/devices/system/cpu/cpu", "/cpufreq/scaling_cur_freq"]
+      divisor = 1e6 :: Double
+      fmt x | x < 1 = if suffix then mhzFmt x ++ "MHz"
+                                else ghzFmt x
+            | otherwise = ghzFmt x ++ if suffix then "GHz" else ""
+      mhzFmt x = show (round (x * 1000) :: Integer)
+      ghzFmt = showDigits ddigits
+  failureMessage <- getConfigValue naString
+  checkedDataRetrieval failureMessage [path] Nothing (/divisor) fmt
-- 
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