Back to app/src, since it seems they're the default convention for stack

1 files changed, 139 insertions, 0 deletions

diff --git a/src/Xmobar/Plugins/Monitors/MPD.hs b/src/Xmobar/Plugins/Monitors/MPD.hs
new file mode 100644
index 0000000..9525254
--- /dev/null
+++ b/src/Xmobar/Plugins/Monitors/MPD.hs
@@ -0,0 +1,139 @@
+-----------------------------------------------------------------------------
+-- |
+-- Module      :  Plugins.Monitors.MPD
+-- Copyright   :  (c) Jose A Ortega Ruiz
+-- License     :  BSD-style (see LICENSE)
+--
+-- Maintainer  :  Jose A Ortega Ruiz <jao@gnu.org>
+-- Stability   :  unstable
+-- Portability :  unportable
+--
+--  MPD status and song
+--
+-----------------------------------------------------------------------------
+
+module Xmobar.Plugins.Monitors.MPD ( mpdConfig, runMPD, mpdWait, mpdReady ) where
+
+import Data.List
+import Data.Maybe (fromMaybe)
+import Xmobar.Plugins.Monitors.Common
+import System.Console.GetOpt
+import qualified Network.MPD as M
+import Control.Concurrent (threadDelay)
+
+mpdConfig :: IO MConfig
+mpdConfig = mkMConfig "MPD: <state>"
+              [ "bar", "vbar", "ipat", "state", "statei", "volume", "length"
+              , "lapsed", "remaining", "plength", "ppos", "flags", "file"
+              , "name", "artist", "composer", "performer"
+              , "album", "title", "track", "genre", "date"
+              ]
+
+data MOpts = MOpts
+  { mPlaying :: String
+  , mStopped :: String
+  , mPaused :: String
+  , mLapsedIconPattern :: Maybe IconPattern
+  }
+
+defaultOpts :: MOpts
+defaultOpts = MOpts
+  { mPlaying = ">>"
+  , mStopped = "><"
+  , mPaused = "||"
+  , mLapsedIconPattern = Nothing
+  }
+
+options :: [OptDescr (MOpts -> MOpts)]
+options =
+  [ Option "P" ["playing"] (ReqArg (\x o -> o { mPlaying = x }) "") ""
+  , Option "S" ["stopped"] (ReqArg (\x o -> o { mStopped = x }) "") ""
+  , Option "Z" ["paused"] (ReqArg (\x o -> o { mPaused = x }) "") ""
+  , Option "" ["lapsed-icon-pattern"] (ReqArg (\x o ->
+     o { mLapsedIconPattern = Just $ parseIconPattern x }) "") ""
+  ]
+
+runMPD :: [String] -> Monitor String
+runMPD args = do
+  opts <- io $ mopts args
+  status <- io $ M.withMPD M.status
+  song <- io $ M.withMPD M.currentSong
+  s <- parseMPD status song opts
+  parseTemplate s
+
+mpdWait :: IO ()
+mpdWait = do
+  status <- M.withMPD $ M.idle [M.PlayerS, M.MixerS, M.OptionsS]
+  case status of
+    Left _ -> threadDelay 10000000
+    _ -> return ()
+
+mpdReady :: [String] -> Monitor Bool
+mpdReady _ = do
+  response <- io $ M.withMPD M.ping
+  case response of
+    Right _         -> return True
+    -- Only cases where MPD isn't responding is an issue; bogus information at
+    -- least won't hold xmobar up.
+    Left M.NoMPD    -> return False
+    Left (M.ConnectionError _) -> return False
+    Left _          -> return True
+
+mopts :: [String] -> IO MOpts
+mopts argv =
+  case getOpt Permute options argv of
+    (o, _, []) -> return $ foldr id defaultOpts o
+    (_, _, errs) -> ioError . userError $ concat errs
+
+parseMPD :: M.Response M.Status -> M.Response (Maybe M.Song) -> MOpts
+            -> Monitor [String]
+parseMPD (Left e) _ _ = return $ show e:replicate 19 ""
+parseMPD (Right st) song opts = do
+  songData <- parseSong song
+  bar <- showPercentBar (100 * b) b
+  vbar <- showVerticalBar (100 * b) b
+  ipat <- showIconPattern (mLapsedIconPattern opts) b
+  return $ [bar, vbar, ipat, ss, si, vol, len, lap, remain, plen, ppos, flags] ++ songData
+  where s = M.stState st
+        ss = show s
+        si = stateGlyph s opts
+        vol = int2str $ fromMaybe 0 (M.stVolume st)
+        (p, t) = fromMaybe (0, 0) (M.stTime st)
+        [lap, len, remain] = map showTime [floor p, t, max 0 (t - floor p)]
+        b = if t > 0 then realToFrac $ p / fromIntegral t else 0
+        plen = int2str $ M.stPlaylistLength st
+        ppos = maybe "" (int2str . (+1)) $ M.stSongPos st
+        flags = playbackMode st
+
+stateGlyph :: M.State -> MOpts -> String
+stateGlyph s o =
+  case s of
+    M.Playing -> mPlaying o
+    M.Paused -> mPaused o
+    M.Stopped -> mStopped o
+
+playbackMode :: M.Status -> String
+playbackMode s =
+  concat [if p s then f else "-" |
+          (p,f) <- [(M.stRepeat,"r"),
+                    (M.stRandom,"z"),
+                    (M.stSingle,"s"),
+                    (M.stConsume,"c")]]
+
+parseSong :: M.Response (Maybe M.Song) -> Monitor [String]
+parseSong (Left _) = return $ repeat ""
+parseSong (Right Nothing) = return $ repeat ""
+parseSong (Right (Just s)) =
+  let str sel = maybe "" (intercalate ", " . map M.toString) (M.sgGetTag sel s)
+      sels = [ M.Name, M.Artist, M.Composer, M.Performer
+             , M.Album, M.Title, M.Track, M.Genre, M.Date ]
+      fields = M.toString (M.sgFilePath s) : map str sels
+  in mapM showWithPadding fields
+
+showTime :: Integer -> String
+showTime t = int2str minutes ++ ":" ++ int2str seconds
+  where minutes = t `div` 60
+        seconds = t `mod` 60
+
+int2str :: (Show a, Num a, Ord a) => a -> String
+int2str x = if x < 10 then '0':sx else sx where sx = show x