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| author | jao <jao@gnu.org> | 2015-03-11 00:52:49 +0100 |
|---|---|---|
| committer | jao <jao@gnu.org> | 2015-03-11 00:52:49 +0100 |
| commit | 368556826d090b508a25111914b214a9fb0a69ba (patch) | |
| tree | 3b2734f9a58015d3f391fb7e53410c40dec13565 /src/Plugins | |
| parent | f4172b310a861d5bf14af22f991bd2047a2deebf (diff) | |
| download | xmobar-368556826d090b508a25111914b214a9fb0a69ba.tar.gz xmobar-368556826d090b508a25111914b214a9fb0a69ba.tar.bz2 | |
Another attempt at better error handling in Volume
Diffstat (limited to 'src/Plugins')
| -rw-r--r-- | src/Plugins/Monitors/Volume.hs | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/src/Plugins/Monitors/Volume.hs b/src/Plugins/Monitors/Volume.hs index 9f33b3e..338cf64 100644 --- a/src/Plugins/Monitors/Volume.hs +++ b/src/Plugins/Monitors/Volume.hs @@ -1,7 +1,7 @@ ----------------------------------------------------------------------------- -- | -- Module : Plugins.Monitors.Volume --- Copyright : (c) 2011, 2013 Thomas Tuegel +-- Copyright : (c) 2011, 2013, 2015 Thomas Tuegel -- License : BSD-style (see LICENSE) -- -- Maintainer : Jose A. Ortega Ruiz <jao@gnu.org> @@ -122,13 +122,7 @@ formatDb opts dbi = do runVolume :: String -> String -> [String] -> Monitor String runVolume mixerName controlName argv = do opts <- io $ parseOpts argv - (lo, hi, val, db, sw) <- io $ withMixer mixerName $ \mixer -> do - control <- getControlByName mixer controlName - (lo, hi) <- liftMaybe $ getRange <$> volumeControl control - val <- getVal $ volumeControl control - db <- getDB $ volumeControl control - sw <- getSw $ switchControl control - return (lo, hi, val, db, sw) + (lo, hi, val, db, sw) <- io readMixer p <- liftMonitor $ liftM3 formatVol lo hi val b <- liftMonitor $ liftM3 formatVolBar lo hi val v <- liftMonitor $ liftM3 formatVolVBar lo hi val @@ -139,6 +133,16 @@ runVolume mixerName controlName argv = do where + readMixer = + AE.catch (withMixer mixerName $ \mixer -> do + control <- getControlByName mixer controlName + (lo, hi) <- liftMaybe $ getRange <$> volumeControl control + val <- getVal $ volumeControl control + db <- getDB $ volumeControl control + sw <- getSw $ switchControl control + return (lo, hi, val, db, sw)) + (const $ return (Nothing, Nothing, Nothing, Nothing, Nothing)) + volumeControl :: Maybe Control -> Maybe Volume volumeControl c = join $ (playback . volume <$> c) `mplus` (common . volume <$> c) |