589 lines
23 KiB
Haskell
589 lines
23 KiB
Haskell
{-# OPTIONS_GHC -Wno-unused-imports #-}
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{-# LANGUAGE MultiWayIf #-}
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module Main
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( main
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)
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where
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import Control.Concurrent ( threadDelay )
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import qualified Control.Concurrent.Async as A
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import Control.Concurrent.MVar
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import Control.Exception ( AsyncException(UserInterrupt)
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, IOException
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, bracket
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, catch
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, mask
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, throwIO
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, try
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)
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import Control.Monad ( forM_
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, forever
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, replicateM
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, unless
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, when
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, zipWithM_
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)
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import Control.Monad.IO.Class ( MonadIO
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, liftIO
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)
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import Control.Monad.Trans.State.Strict
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( StateT(StateT)
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, evalStateT
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, execStateT
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, get
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, gets
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, modify
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, put
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)
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import qualified Data.Char as Char
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import Data.List ( isInfixOf
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, isPrefixOf
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, isSuffixOf
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)
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import Data.Maybe ( listToMaybe
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, mapMaybe
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)
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import qualified GHC.IO.Encoding
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import Lens.Micro ( (<&>) )
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import System.Clock ( Clock(RealtimeCoarse)
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, TimeSpec
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, diffTimeSpec
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, getTime
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, toNanoSecs
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)
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import qualified System.Console.ANSI as Ansi
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import System.Console.Concurrent ( errorConcurrent
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, flushConcurrentOutput
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, outputConcurrent
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, withConcurrentOutput
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)
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import System.Console.Regions ( ConsoleRegion
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, RegionLayout(Linear)
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, closeConsoleRegion
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, displayConsoleRegions
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, openConsoleRegion
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, setConsoleRegion
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)
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import qualified System.Environment
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import System.Exit ( exitSuccess
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, exitWith
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)
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import System.IO ( Handle )
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import qualified System.IO
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import qualified System.Process as P
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import Text.Printf ( printf )
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import qualified UI.Butcher.Monadic as B
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import Util
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data StreamKind = StdOut | StdErr
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deriving (Eq, Show)
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data JoinMode
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= JoinAll
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| JoinSpecific
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data JoinedInfo
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= JoinedNot
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| JoinedAll Int
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| Joined Int String [String] -- pattern, prefix
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data KeepMode
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= Drop -- dont forward
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| Keep -- forward each line, apart from summaries
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| Conflate -- summarize non-summarized lines as "*"
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deriving (Eq, Show)
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data Config = Config
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{ c_command :: String
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, c_lines :: Int
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, c_keepStdout :: KeepMode
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, c_keepStderr :: KeepMode
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, c_summarize :: [(JoinMode, String)]
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, c_outFile :: Maybe Handle
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, c_errFile :: Maybe Handle
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, c_sectionChar :: Maybe Char
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, c_termWidth :: Maybe Int
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}
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data State = State
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{ s_config :: Config
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, s_regions :: [ConsoleRegion]
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, s_history :: [(StreamKind, String)]
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, s_lines :: [(StreamKind, String)]
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, s_countOut :: Int
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, s_countErr :: Int
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, s_globalStart :: TimeSpec
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, s_lastLineTime :: TimeSpec
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, s_summary :: Maybe ((StreamKind, String), JoinedInfo)
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}
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getTimeDiff :: Bool -> StateT State IO (Float, Float)
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getTimeDiff updateCur = do
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now <- liftIO $ getTime RealtimeCoarse
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when updateCur $ modify $ \s -> s { s_lastLineTime = now }
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s <- get
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let diffNanos1 = toNanoSecs $ diffTimeSpec (s_globalStart s) now
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let diffNanos2 = toNanoSecs $ diffTimeSpec (s_lastLineTime s) now
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pure
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( fromIntegral (diffNanos1 `div` 1000000) / (1000 :: Float)
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, fromIntegral (diffNanos2 `div` 1000000) / (1000 :: Float)
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)
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stateLine :: Bool -> Bool -> StateT State IO String
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stateLine updateCur showCur = do
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(diffFloat1, diffFloat2) <- getTimeDiff updateCur
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s <- get
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let outStr = if showCur && diffFloat2 > 1.0
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then printf
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"waiting since %0.0fs … %0.1fs total, %i/%i lines stdout/stderr"
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diffFloat2
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diffFloat1
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(s_countOut s)
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(s_countErr s)
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else printf "%0.3fs total, %i lines stdout %i lines stderr"
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diffFloat1
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(s_countOut s)
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(s_countErr s)
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pure $ fGrey ++ outStr
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firstJust :: (a -> Maybe b) -> [a] -> Maybe b
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firstJust f = listToMaybe . mapMaybe f
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matchPattern :: String -> String -> Bool
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matchPattern pat s = case break (== '*') pat of
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("", "*" ) -> True
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("", '*' : rest) -> case break (== '*') rest of
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(start, "*") -> start `isInfixOf` s
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(_ , "" ) -> rest `isSuffixOf` s
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_ -> error $ "too many globs in pattern " ++ pat ++ "!"
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(start, '*' : rest) -> if any (== '*') rest
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then error "only one glob supported in patterns!"
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else start `isPrefixOf` s && rest `isSuffixOf` s
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("", "") -> error "empty pattern"
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_ -> undefined
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dispatchLine :: (StreamKind, String) -> StateT State IO ()
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dispatchLine line@(kind, str) = do
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conf <- gets s_config
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liftIO $ case kind of
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StdOut -> when (c_keepStdout conf /= Drop)
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$ outputConcurrent (fReset ++ str ++ "\n")
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StdErr ->
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when (c_keepStderr conf /= Drop) $ errorConcurrent (fReset ++ str ++ "\n")
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modify $ \s -> s { s_history = line : s_history s }
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showPattern :: String -> String
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showPattern p = p >>= \case
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'*' -> setFGColorVivid Ansi.Yellow ++ "…" ++ fReset
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x -> [x]
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dispatchPat :: StreamKind -> Int -> String -> [String] -> StateT State IO ()
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dispatchPat oldKind i pat prefix = do
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let kindStr = case oldKind of
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StdOut -> "stdout"
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StdErr -> "stderr"
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let betterName =
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let a = unwords prefix
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la = length a
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in if
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| i == 1 && la < 70
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-> a
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| la > length pat && la < 70
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-> a ++ setFGColorVivid Ansi.Yellow ++ " …" ++ fReset
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| otherwise
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-> showPattern pat
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let prettyPat =
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fGrey
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++ "("
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++ show i
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++ " lines "
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++ kindStr
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++ ")"
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++ fReset
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++ " "
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++ betterName
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++ "\n"
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conf <- gets s_config
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liftIO $ case oldKind of
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StdOut -> when (c_keepStdout conf /= Drop) $ outputConcurrent prettyPat
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StdErr -> when (c_keepStderr conf /= Drop) $ errorConcurrent prettyPat
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dispatchSkipped :: StreamKind -> Int -> StateT State IO ()
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dispatchSkipped oldKind i = do
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let kindStr = case oldKind of
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StdOut -> "stdout"
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StdErr -> "stderr"
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let prettyPat =
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fGrey
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++ "("
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++ show i
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++ " lines "
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++ kindStr
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++ ")"
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++ fReset
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++ " …skipped…\n"
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conf <- gets s_config
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liftIO $ case oldKind of
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StdOut -> when (c_keepStdout conf /= Drop) $ outputConcurrent prettyPat
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StdErr -> when (c_keepStderr conf /= Drop) $ errorConcurrent prettyPat
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summarizeLines :: (StreamKind, String) -> StateT State IO ()
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summarizeLines cur@(kind, line) = do
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s <- get
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let conf = s_config s
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let match = firstJust
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(\joiner@(_, pat) ->
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if matchPattern pat line then Just joiner else Nothing
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)
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(c_summarize conf ++ case kind of
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StdOut -> [ (JoinAll, "*") | c_keepStdout conf == Conflate ]
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StdErr -> [ (JoinAll, "*") | c_keepStderr conf == Conflate ]
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)
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case (s_summary s, match) of
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(Nothing, _) -> put s
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{ s_summary = Just
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( cur
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, case match of
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Nothing -> JoinedNot
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Just (JoinAll , _ ) -> JoinedAll 1
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Just (JoinSpecific, pat) -> Joined 1 pat (words line)
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)
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}
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(Just (oldLine, JoinedNot), _) -> do
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dispatchLine oldLine
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put s
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{ s_summary = Just
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( cur
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, case match of
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Nothing -> JoinedNot
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Just (JoinAll , _ ) -> JoinedAll 1
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Just (JoinSpecific, pat) -> Joined 1 pat (words line)
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)
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}
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(Just ((oldKind, _), JoinedAll i), Nothing) -> do
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dispatchSkipped oldKind i
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put s { s_summary = Just (cur, JoinedNot) }
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(Just ((oldKind, _), Joined i oldPat oldPrefix), Nothing) -> do
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dispatchPat oldKind i oldPat oldPrefix
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put s { s_summary = Just (cur, JoinedNot) }
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(Just ((oldKind, _), JoinedAll i), Just joiner) -> case joiner of
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(JoinAll, _)
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| kind == oldKind -> do
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put s { s_summary = Just (cur, JoinedAll (i + 1)) }
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| otherwise -> do
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dispatchSkipped oldKind i
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put s { s_summary = Just (cur, JoinedAll 1) }
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(JoinSpecific, pat) -> do
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dispatchSkipped oldKind i
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put s { s_summary = Just (cur, Joined 1 pat (words line)) }
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(Just ((oldKind, _), Joined i oldPat oldPrefix), Just joiner) ->
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case joiner of
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(JoinSpecific, pat) | oldPat == pat && kind == oldKind -> do
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let newPrefix =
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let go [] = []
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go ((a, b) : rest) | a == b = a : go rest
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| otherwise = []
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in go $ zip oldPrefix (words line)
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put s { s_summary = Just (cur, Joined (i + 1) pat newPrefix) }
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_ -> do
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dispatchPat oldKind i oldPat oldPrefix
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put s
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{ s_summary = Just
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( cur
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, case joiner of
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(JoinAll , _ ) -> JoinedAll 1
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(JoinSpecific, pat) -> Joined 1 pat (words line)
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)
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}
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processLine :: (StreamKind, String) -> State -> IO State
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processLine newPair@(kind, _) = execStateT $ do
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conf <- gets s_config
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modify $ \s -> s { s_lines = newPair : s_lines s }
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do
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s0 <- get
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let (keep, over) = splitAt (c_lines conf - 1) (s_lines s0)
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put s0 { s_lines = keep }
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over `forM_` summarizeLines
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case kind of
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StdOut -> modify $ \s -> s { s_countOut = s_countOut s + 1 }
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StdErr -> modify $ \s -> s { s_countErr = s_countErr s + 1 }
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curLines <- gets s_lines
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prettyLinesWithSummary <- do
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let ellipse =
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let go _ "" = ""
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go 0 _ = "…"
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go n (x : xs) = x : go (n - 1) xs
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in case c_termWidth conf of
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Nothing -> id
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Just w -> go (w - 3)
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let prettyLines = reverse $ take (c_lines conf) curLines <&> \case
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(StdOut, line) -> fWhiteDis ++ "│ " ++ fReset ++ ellipse line
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(StdErr, line) -> fRedDis ++ "│ " ++ fReset ++ ellipse line
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summary <- gets s_summary
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pure $ case summary of
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Nothing -> prettyLines
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Just ((StdOut, line), JoinedNot) ->
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(fWhiteDis ++ "│ " ++ fReset ++ ellipse line) : prettyLines
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Just ((StdOut, line), JoinedAll 1) ->
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(fWhiteDis ++ "│ " ++ fReset ++ ellipse line) : prettyLines
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Just ((StdOut, _line), JoinedAll i) ->
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(fWhiteDis ++ "│ " ++ fReset ++ "…skipped… (" ++ show i ++ " lines)")
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: prettyLines
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Just ((StdOut, line), Joined 1 _ _) ->
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(fWhiteDis ++ "│ " ++ fReset ++ ellipse line) : prettyLines
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Just ((StdOut, _), Joined i pat _) ->
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( fWhiteDis
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++ "│ "
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++ fReset
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++ showPattern pat
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++ " ("
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++ show i
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++ " lines)"
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)
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: prettyLines
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Just ((StdErr, line), JoinedNot) ->
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(fRedDis ++ "│ " ++ fReset ++ ellipse line) : prettyLines
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Just ((StdErr, line), JoinedAll 1) ->
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(fRedDis ++ "│ " ++ fReset ++ ellipse line) : prettyLines
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Just ((StdErr, _line), JoinedAll i) ->
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(fRedDis ++ "│ " ++ fReset ++ "…skipped… (" ++ show i ++ " lines)")
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: prettyLines
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Just ((StdErr, line), Joined 1 _ _) ->
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(fRedDis ++ "│ " ++ fReset ++ ellipse line) : prettyLines
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Just ((StdErr, _), Joined i pat _) ->
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( fRedDis
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++ "│ "
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++ fReset
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++ showPattern pat
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++ " ("
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++ show i
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++ " lines)"
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)
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: prettyLines
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let showCount = min (c_lines conf) (length prettyLinesWithSummary)
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do -- make sure we have enough regions allocated
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let need = showCount + 1
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got <- gets (length . s_regions)
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when (need > got) $ do
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new <- liftIO $ replicateM (need - got) (openConsoleRegion Linear)
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modify $ \s -> s { s_regions = s_regions s ++ new }
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do
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regions <- gets s_regions
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liftIO $ zipWithM_
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(\x region -> do
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setConsoleRegion region x
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)
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prettyLinesWithSummary
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(take showCount regions)
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updateStateLine True
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updateStateLine :: Bool -> StateT State IO ()
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updateStateLine updateCur = do
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line <- stateLine updateCur True
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s <- get
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liftIO $ setConsoleRegion
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(last $ s_regions s)
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( fGrey
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++ "╰─ … "
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++ line
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++ " "
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++ setFGColorVivid Ansi.Blue
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++ (c_command $ s_config s)
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++ fReset
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)
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quoteIfSpaces :: String -> String
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quoteIfSpaces s = if any Char.isSpace s then "\"" ++ s ++ "\"" else s
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main :: IO ()
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main = B.mainFromCmdParser $ do
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B.reorderStart
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numLines :: Int <- B.addFlagReadParam "n" ["lines"] "LINES" (B.flagDefault 5)
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keepStdout <- B.addSimpleBoolFlag "" ["keep-out"] mempty
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keepStderr <- B.addSimpleBoolFlag "" ["keep-err"] mempty
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keepBoth <- B.addSimpleBoolFlag "" ["keep"] mempty
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dropStdout <- B.addSimpleBoolFlag "" ["drop-out"] mempty
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dropStderr <- B.addSimpleBoolFlag "" ["drop-err"] mempty
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dropBoth <- B.addSimpleBoolFlag "" ["drop"] mempty
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conflateStdout <- B.addSimpleBoolFlag "" ["conflate-out"] mempty
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conflateStderr <- B.addSimpleBoolFlag "" ["conflate-err"] mempty
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conflateBoth <- B.addSimpleBoolFlag "" ["conflate"] mempty
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summarize <- B.addFlagStringParams "s" ["summarize"] "PATTERN" mempty
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skip <- B.addFlagStringParams "x" ["skip"] "PATTERN" mempty
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omitSummary <- B.addSimpleBoolFlag "" ["omit-summary"] mempty
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-- section <- B.addSimpleBoolFlag "" ["section"] mempty
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B.reorderStop
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rest <- B.addParamRestOfInputRaw "COMMAND" mempty <&> \case
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B.InputString ('-' : '-' : ' ' : r) -> words r
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B.InputString ('-' : '-' : r) -> words r
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B.InputString (r ) -> words r
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B.InputArgs ("--" : r ) -> r
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B.InputArgs r -> r
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helpDesc <- B.peekCmdDesc
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B.addCmdImpl $ do
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when (null rest) $ do
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print $ B.ppHelpShallow helpDesc
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exitSuccess
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let (restPath : restArgs) = rest
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recursiveMay <- System.Environment.lookupEnv "IN_HXBRIEF"
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case recursiveMay of
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Just _ -> do
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-- TODO: Arguably, we should do _something_ here, e.g. summarizing
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-- and filtering etc.
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P.callProcess restPath restArgs
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exitSuccess
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Nothing -> pure ()
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let mainBracket = bracket
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(do
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System.IO.hSetEcho System.IO.stdin False
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System.IO.hSetBuffering System.IO.stdin System.IO.LineBuffering
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GHC.IO.Encoding.setLocaleEncoding GHC.IO.Encoding.utf8
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pure ()
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)
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(\() -> do
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System.IO.hSetEcho System.IO.stdin True
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)
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withConcurrentOutput $ mainBracket $ \() -> mask $ \restore -> do
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-- restore $ GHC.IO.Encoding.setFileSystemEncoding GHC.IO.Encoding.utf8
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-- restore $ System.IO.hSetEncoding System.IO.stdout GHC.IO.Encoding.utf8
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-- restore $ System.IO.hSetEncoding System.IO.stderr GHC.IO.Encoding.utf8
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termWidthMay <- restore $ do
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support <- Ansi.hSupportsANSI System.IO.stdin
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if support then fmap snd <$> Ansi.getTerminalSize else pure Nothing
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let stdoutCheckCount =
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length
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$ [ () | keepStdout || keepBoth ]
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++ [ () | conflateStdout || conflateBoth ]
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++ [ () | dropStdout || dropBoth ]
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let stderrCheckCount =
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length
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$ [ () | keepStderr || keepBoth ]
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++ [ () | conflateStderr || conflateBoth ]
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++ [ () | dropStderr || dropBoth ]
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(lastLine, ecMay) <- displayConsoleRegions $ do
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initialState <- do
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startTime <- getTime RealtimeCoarse
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line0 <- openConsoleRegion Linear
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pure State
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{ s_config = Config
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{ c_command = unwords $ map quoteIfSpaces rest
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, c_lines = numLines
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, c_keepStdout = if
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| stdoutCheckCount > 1 -> error
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"too many keep/drop/conflate for stdout!"
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| keepStdout || keepBoth -> Keep
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| conflateStdout || conflateBoth -> Conflate
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| dropStdout || dropBoth -> Drop
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| otherwise -> if null summarize
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then Drop
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else Conflate
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, c_keepStderr = if
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| stderrCheckCount > 1 -> error
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"too many keep/drop/conflate for stderr!"
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| keepStderr || keepBoth -> Keep
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| conflateStderr || conflateBoth -> Conflate
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| dropStderr || dropBoth -> Drop
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| otherwise -> Keep
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, c_summarize = (summarize <&> \x -> (JoinSpecific, x))
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++ (skip <&> \x -> (JoinAll, x))
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, c_outFile = Nothing
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, c_errFile = Nothing
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, c_sectionChar = Nothing -- if section then Just '#' else Nothing
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, c_termWidth = termWidthMay
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|
}
|
|
, s_regions = [line0]
|
|
, s_history = []
|
|
, s_lines = []
|
|
, s_countOut = 0
|
|
, s_countErr = 0
|
|
, s_globalStart = startTime
|
|
, s_lastLineTime = startTime
|
|
, s_summary = Nothing
|
|
}
|
|
stateVar :: MVar State <- newMVar initialState
|
|
|
|
let inHandler inp =
|
|
let go = do
|
|
x <- try getLine
|
|
case x of
|
|
Left (_ :: IOException) -> System.IO.hClose inp
|
|
Right line -> do
|
|
System.IO.hPutStrLn inp line
|
|
System.IO.hFlush inp
|
|
go
|
|
in go
|
|
let outHandler out = forever $ do
|
|
x <- System.IO.hGetLine out
|
|
modifyMVar_ stateVar (processLine (StdOut, x))
|
|
let errHandler err = forever $ do
|
|
x <- System.IO.hGetLine err
|
|
modifyMVar_ stateVar (processLine (StdErr, x))
|
|
let tickHandler = forever $ do
|
|
threadDelay 333333
|
|
modifyMVar_ stateVar $ execStateT $ updateStateLine False
|
|
innerEnv <- do
|
|
env <- System.Environment.getEnvironment
|
|
pure (env ++ [("IN_HXBRIEF", "1")])
|
|
|
|
let mainBlock =
|
|
P.withCreateProcess
|
|
((P.proc restPath restArgs) { P.std_in = P.CreatePipe
|
|
, P.std_out = P.CreatePipe
|
|
, P.std_err = P.CreatePipe
|
|
, P.env = Just innerEnv
|
|
}
|
|
)
|
|
$ \(Just inp) (Just out) (Just err) hdl -> do
|
|
A.withAsync (inHandler inp) $ \inAsync ->
|
|
A.withAsync (outHandler out) $ \outAsync ->
|
|
A.withAsync (errHandler err) $ \errAsync ->
|
|
A.withAsync tickHandler $ \_tickAsync -> do
|
|
ec <- P.waitForProcess hdl
|
|
A.cancel inAsync
|
|
_a <- A.waitCatch outAsync
|
|
_b <- A.waitCatch errAsync
|
|
pure (Just ec)
|
|
ecMay <- restore mainBlock `catch` (\UserInterrupt -> pure Nothing)
|
|
modifyMVar_ stateVar $ execStateT $ do
|
|
finalLines <- gets s_lines
|
|
countOut <- gets s_countOut
|
|
countErr <- gets s_countErr
|
|
if countOut == 0 && countErr == 1
|
|
then do
|
|
modify
|
|
$ \s -> s { s_config = (s_config s) { c_keepStderr = Keep } }
|
|
reverse finalLines `forM_` dispatchLine
|
|
else do
|
|
-- we leave the lines in final state, but process them
|
|
reverse finalLines `forM_` summarizeLines
|
|
gets s_summary >>= \case
|
|
Nothing -> pure ()
|
|
Just (line , JoinedNot ) -> dispatchLine line
|
|
Just ((kind, _), JoinedAll i) -> dispatchSkipped kind i
|
|
Just ((kind, _), Joined i pat prefix) ->
|
|
dispatchPat kind i pat prefix
|
|
finalState <- takeMVar stateVar
|
|
line <- evalStateT (stateLine False False) finalState
|
|
s_regions finalState `forM_` \r -> closeConsoleRegion r
|
|
let lastLine = case ecMay of
|
|
Nothing -> fGrey ++ line ++ ", UserInterrupt\n" ++ fReset
|
|
Just ec -> fGrey ++ line ++ ", ec=" ++ showEC ec ++ "\n"
|
|
pure (lastLine, ecMay)
|
|
|
|
flushConcurrentOutput
|
|
unless omitSummary $ outputConcurrent lastLine
|
|
case ecMay of
|
|
Nothing -> throwIO UserInterrupt -- essentially re-throw
|
|
Just ec -> exitWith ec
|
|
|