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authorGregor Kleen <gkleen@yggdrasil.li>2017-03-09 14:13:44 +0100
committerGregor Kleen <gkleen@yggdrasil.li>2017-03-09 14:13:44 +0100
commit10ed6c7c73ac455b3dbfbbae2dd522f1581e68dc (patch)
tree7d422aaa7023f6b50c65def03670e3d512b78ffa
parent2f5f880136f3411e7e8d919631e71ef05d0ae9ad (diff)
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Cleanup adjmix
Diffstat
-rw-r--r--adjmix/Adjmix.hs129
1 files changed, 60 insertions, 69 deletions
diff --git a/adjmix/Adjmix.hs b/adjmix/Adjmix.hs
index c2f7fee..bc04a50 100644
--- a/adjmix/Adjmix.hs
+++ b/adjmix/Adjmix.hs
@@ -1,4 +1,4 @@
1{-# LANGUAGE RecordWildCards #-} 1{-# LANGUAGE RecordWildCards, ApplicativeDo #-}
2 2
3import Options.Applicative 3import Options.Applicative
4 4
@@ -7,90 +7,81 @@ import System.FileLock
7 7
8import Data.Char 8import Data.Char
9import Data.Monoid 9import Data.Monoid
10import Data.List
10 11
11import Trivmix.Types 12import Trivmix.Types
12 13
14
13data Options = Options 15data Options = Options
14 { baseDirectory :: FilePath 16 { baseDirectory :: FilePath
15 , targetDirectory :: FilePath 17 , targetDirectory :: FilePath
16 , levelFile :: FilePath 18 , levelFile :: FilePath
17 , adjustment :: Adjustment Level 19 , adjustment :: Adjustment Level
18 } 20 }
21
22
19optionParser :: Parser Options 23optionParser :: Parser Options
20optionParser = Options 24optionParser = do
21 <$> strOption ( long "base" 25 baseDirectory <- strOption $ mconcat
22 <> metavar "DIRECTORY" 26 [ long "base", metavar "DIRECTORY", showDefault
23 <> value "/dev/shm/mix" 27 , value "/dev/shm/mix"
24 <> showDefault 28 , help "Base directory"
25 <> help "Base directory" 29 ]
26 ) 30 levelFile <- strOption $ mconcat
27 <*> strOption ( long "target" 31 [ long "level", metavar "FILENAME", showDefault
28 <> short 't' 32 , value "level"
29 <> metavar "DIRECTORY" 33 , help "Filename of the level file"
30 <> help "Directory relative to ‘--base’ containing the level file" 34 ]
31 ) 35 targetDirectory <- strArgument $ mconcat
32 <*> strOption ( long "level" 36 [ metavar "DIRECTORY"
33 <> metavar "FILENAME" 37 , help "Directory relative to ‘--base’ containing the level file"
34 <> value "level" 38 ]
35 <> help "Filename of the level file" 39 adjustment <- getAlt . mconcat $ map Alt
36 <> showDefault 40 [ Set <$> option auto (mconcat
37 ) 41 [ long "set", short 'o', metavar "LEVEL"
38 <*> ( ( Set <$> option auto ( long "set" 42 , help "Overwrite the current level"
39 <> short 'o' 43 ])
40 <> metavar "LEVEL" 44 , Add <$> option auto (mconcat
41 <> help "Overwrite the current level" 45 [ long "add", short 'a', metavar "LEVEL"
42 ) 46 , help "Add to the current level"
43 ) 47 ])
44 <|> ( Add <$> option auto ( long "add" 48 , Sub <$> option auto (mconcat
45 <> short 'a' 49 [ long "sub", short 's', metavar "LEVEL"
46 <> metavar "LEVEL" 50 , help "Subtract from the current level"
47 <> help "Add to the current level" 51 ])
48 ) 52 , let
49 ) 53 adjMode = getAlt . mconcat $ map Alt
50 <|> ( Sub <$> option auto ( long "sub" 54 [ flag' Add (mconcat
51 <> short 's' 55 [ long "inc", short 'i'
52 <> metavar "LEVEL" 56 , help "Increase level by a preset amount (see ‘--by’)"
53 <> help "Subtract from the current level" 57 ])
54 ) 58 , flag' Sub (mconcat
55 ) 59 [ long "dec", short 'd'
56 <|> ( ($) <$> ( flag' Add ( long "inc" 60 , help "Decrease level by a preset amount (see ‘--by’)"
57 <> short 'i' 61 ])
58 <> help "Increase level by a preset amount (see ‘--by’)" 62 ]
59 ) 63 adjBy = option auto (mconcat
60 <|> flag' Sub ( long "dec" 64 [ long "by", short 'b', metavar "LEVEL", value (read "5dB"), showDefault
61 <> short 'd' 65 , help "Value to increase/decrease level by when using ‘--inc’ or ‘--dec’"
62 <> help "Decrease level by a preset amount (see ‘--by’)" 66 ])
63 ) 67 in ($) <$> adjMode <*> adjBy
64 ) 68 ]
65 <*> ( option auto ( long "by" 69 return Options{..}
66 <> metavar "LEVEL"
67 <> value (read "5dB")
68 <> showDefault
69 <> help "Value to decrease/increase level by when using ‘--inc’ or ‘--dec’"
70 )
71 )
72 )
73 )
74 70
75main :: IO () 71main :: IO ()
76main = execParser opts >>= adjmix 72main = execParser opts >>= adjmix
77 where 73 where
78 opts = info (helper <*> optionParser) 74 opts = info (helper <*> optionParser) $ mconcat
79 ( fullDesc 75 [ progDesc "Adjust the level file of a trivmix"
80 <> progDesc "Adjust the level file of a trivmix" 76 , header "Adjmix — A trivial interface to a trivial mixer"
81 <> header "Adjmix — A trivial interface to a trivial mixer" 77 , fullDesc
82 ) 78 ]
83 79
84adjmix :: Options -> IO () 80adjmix :: Options -> IO ()
85adjmix Options{..} = withFileLock levelFile' Exclusive $ const $ do 81adjmix Options{..} = withFileLock levelFile' Exclusive . const $ do
86 oldLevel <- readFile levelFile' >>= readIO . stripSpace 82 oldLevel <- readFile levelFile' >>= readIO . stripSpace
87 let 83 let newLevel = oldLevel `doAdjustment` adjustment
88 newLevel = oldLevel `doAdjustment` adjustment 84 writeFile levelFile' $ show newLevel ++ "\n"
89 writeFile levelFile' (show newLevel ++ "\n")
90 where 85 where
91 levelFile' = baseDirectory </> targetDirectory </> levelFile 86 levelFile' = baseDirectory </> targetDirectory </> levelFile
92 stripSpace = reverse . stripSpace' . reverse . stripSpace' 87 stripSpace = dropWhile isSpace . dropWhileEnd isSpace
93 stripSpace' [] = []
94 stripSpace' l@(x:xs) = if isSpace x
95 then stripSpace' xs
96 else l
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