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|
-----------------------------------------------------------------------------
-- |
-- 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)
import Control.Monad.Except (catchError)
templateVars :: [String]
templateVars = [ "bar", "vbar", "ipat", "state", "statei", "volume", "length"
, "lapsed", "remaining", "plength", "ppos", "flags", "file"
, "name", "artist", "composer", "performer"
, "album", "title", "track", "genre", "date"
]
mpdConfig :: IO MConfig
mpdConfig = mkMConfig "MPD: <state>" templateVars
data MOpts = MOpts
{ mPlaying :: String
, mStopped :: String
, mPaused :: String
, mLapsedIconPattern :: Maybe IconPattern
, mPort :: Maybe String
, mHost :: Maybe String
}
defaultOpts :: MOpts
defaultOpts = MOpts
{ mPlaying = ">>"
, mStopped = "><"
, mPaused = "||"
, mLapsedIconPattern = Nothing
, mPort = Nothing
, mHost = 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 "p" ["port"] (ReqArg (\x o -> o { mPort = Just x }) "") ""
, Option "h" ["host"] (ReqArg (\x o -> o { mHost = Just x }) "") ""
, Option "" ["lapsed-icon-pattern"] (ReqArg (\x o ->
o { mLapsedIconPattern = Just $ parseIconPattern x }) "") ""
]
withMPD :: MOpts -> M.MPD a -> IO (M.Response a)
withMPD opts a =
M.withMPD_ (mHost opts) (mPort opts) a `catchError` (\_ -> return (Left M.NoMPD))
runMPD :: [String] -> Monitor String
runMPD args = do
opts <- io $ parseOptsWith options defaultOpts args
status <- io $ withMPD opts M.status
song <- io $ withMPD opts 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 5000
_ -> return ()
mpdReady :: [String] -> Monitor Bool
mpdReady args = do
opts <- io $ parseOptsWith options defaultOpts args
response <- io $ withMPD opts 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
parseMPD :: M.Response M.Status -> M.Response (Maybe M.Song) -> MOpts
-> Monitor [String]
parseMPD (Left _) _ _ = return $ "N/A": repeat ""
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, floor t, max 0 (floor t - floor p)]
b = if t > 0 then realToFrac $ p / t else 0
plen = int2str $ M.stPlaylistLength st
ppos = maybe "" (int2str . (+1)) $ M.stSongPos st
flags = playbackMode st
stateGlyph :: M.PlaybackState -> 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
|
