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ls-usb.hs
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ls-usb.hs
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{-# LANGUAGE CPP #-}
{-# LANGUAGE NoImplicitPrelude #-}
{-# LANGUAGE PackageImports #-}
{-# LANGUAGE UnicodeSyntax #-}
{-|
Module : Main
Copyright : 2009–2012 Roel van Dijk
License : BSD3 (see the file LICENSE)
Maintainer : Roel van Dijk <[email protected]>
-}
module Main where
--------------------------------------------------------------------------------
-- Imports
--------------------------------------------------------------------------------
import "ansi-wl-pprint" Text.PrettyPrint.ANSI.Leijen ( putDoc, plain )
import "base" Control.Applicative ( (<$>), (<*>) )
import "base" Control.Monad ( (=<<) )
import "base" Data.Bool ( Bool(False, True), otherwise )
import "base" Data.Function ( ($), const, id )
import "base" Data.Functor ( fmap )
import "base" Data.Int ( Int )
import "base" Data.List ( foldr, map )
import "base" Data.Word ( Word8 )
import "base" Data.Version ( showVersion )
import "base" Prelude ( fromIntegral )
import "base" System.IO ( IO, putStrLn )
#if __GLASGOW_HASKELL__ < 700
import "base" Control.Monad ( (>>=), (>>), fail )
#endif
import "base-unicode-symbols" Data.Function.Unicode ( (∘) )
import "base-unicode-symbols" Data.Bool.Unicode ( (∧), (∨) )
import "base-unicode-symbols" Data.Eq.Unicode ( (≡) )
import "cmdtheline" System.Console.CmdTheLine
( Term, TermInfo
, defTI, flag, opt, optAll, optDoc, optInfo
, optName, run, termName, termDoc, value, version
)
import "this" PrettyDevList ( DescribedDevice(..), ppDevices, brightStyle, darkStyle )
import qualified "this" Paths_ls_usb as This ( version )
import "usb" System.USB.Initialization
( Verbosity(PrintNothing), newCtx, setDebug )
import "usb" System.USB.Enumeration
( getDevices, busNumber, deviceAddress )
import "usb" System.USB.Descriptors
( VendorId, ProductId, getDeviceDesc, deviceVendorId, deviceProductId )
import "usb-id-database" System.USB.IDDB.LinuxUsbIdRepo ( staticDb )
import qualified "vector" Data.Vector as V
--------------------------------------------------------------------------------
-- Main
--------------------------------------------------------------------------------
termInfo ∷ TermInfo
termInfo = defTI { termName = "ls-usb"
, version = showVersion This.version
, termDoc = "Lists connected USB devices."
}
verboseT ∷ Term Bool
verboseT = value $ flag (optInfo ["verbose", "V"])
{ optDoc = "Be verbose." }
colourT ∷ Term Bool
colourT = value $ opt True (optInfo ["colour", "c"])
{ optDoc = "Colour the output." }
darkerT ∷ Term Bool
darkerT = value $ flag (optInfo ["darker"])
{ optDoc = "Use darker colours (for bright backgrounds)." }
vidT ∷ Term [Int]
vidT = value $ optAll [] (optInfo ["vid", "v"])
{ optName = "VID"
, optDoc = "List devices with this VID."
}
pidT ∷ Term [Int]
pidT = value $ optAll [] (optInfo ["pid", "p"])
{ optName = "PID"
, optDoc = "List devices with this PID."
}
busT ∷ Term [Int]
busT = value $ optAll [] (optInfo ["bus", "b"])
{ optName = "BUS"
, optDoc = "List devices on this BUS."
}
addressT ∷ Term [Int]
addressT = value $ optAll [] (optInfo ["address", "a"])
{ optName = "ADDRESS"
, optDoc = "List devices with this ADDRESS."
}
main ∷ IO ()
main = run (term, termInfo)
term ∷ Term (IO ())
term = listUSB <$> verboseT
<*> colourT
<*> darkerT
<*> vidT
<*> pidT
<*> busT
<*> addressT
listUSB ∷ Bool → Bool → Bool → [Int] → [Int] → [Int] → [Int] → IO ()
listUSB verbose colour darker vs ps bs as = do
db ← staticDb
ctx ← newCtx
setDebug ctx PrintNothing
devs ← fmap (V.toList ∘ V.filter filter) ∘
V.mapM (\dev -> DD dev <$> getDeviceDesc dev) =<<
getDevices ctx
let style | darker = darkStyle
| otherwise = brightStyle
(putDoc ∘ if colour then id else plain) =<< ppDevices style db verbose devs
putStrLn ""
where
filter ∷ F DescribedDevice
filter = andF $ map filterNonEmpty
[ map (matchVID ∘ fromIntegral) vs
, map (matchPID ∘ fromIntegral) ps
, map (matchBus ∘ fromIntegral) bs
, map (matchDevAddr ∘ fromIntegral) as
]
--------------------------------------------------------------------------------
-- Filters
--------------------------------------------------------------------------------
type F α = α → Bool
-- Construct a filter combinator from a binary boolean operator.
binBoolOpToFComb ∷ (Bool → Bool → Bool) → F α → F α → F α
binBoolOpToFComb (⊗) f g = \x → f x ⊗ g x
(<∨>) ∷ F α → F α → F α
(<∨>) = binBoolOpToFComb (∨)
(<∧>) ∷ F α → F α → F α
(<∧>) = binBoolOpToFComb (∧)
andF ∷ [F α] → F α
andF = foldr (<∧>) (const True)
orF ∷ [F α] → F α
orF = foldr (<∨>) (const False)
filterNonEmpty ∷ [F α] → F α
filterNonEmpty [] = const True
filterNonEmpty xs = foldr (<∨>) (const False) xs
--------------------------------------------------------------------------------
-- Specific Device filters
--------------------------------------------------------------------------------
matchVID ∷ VendorId → F DescribedDevice
matchVID vid' = (vid' ≡) ∘ deviceVendorId ∘ deviceDesc
matchPID ∷ ProductId → F DescribedDevice
matchPID pid' = (pid' ≡) ∘ deviceProductId ∘ deviceDesc
matchBus ∷ Word8 → F DescribedDevice
matchBus bus' = (bus' ≡) ∘ busNumber ∘ device
matchDevAddr ∷ Word8 → F DescribedDevice
matchDevAddr addr = (addr ≡) ∘ deviceAddress ∘ device