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/dist
/dist-newstyle
.stack-work/
.ghc.environment.*
cabal.project.local
/result*
/nix/seaaye-cache
/nix/gcroots
/nix/ci-out

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# Revision history for hxtools
## 0.1.0.0 -- YYYY-mm-dd
* First version. Released on an unsuspecting world.

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GNU AFFERO GENERAL PUBLIC LICENSE
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import Distribution.Simple
main = defaultMain

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cabal-version: >=1.10
-- Initial package description 'hxtools.cabal' generated by 'cabal init'.
-- For further documentation, see http://haskell.org/cabal/users-guide/
name: hxtools
version: 0.1.0.0
-- synopsis:
-- description:
-- bug-reports:
license: AGPL-3
license-file: LICENSE
author: Lennart Spitzner
maintainer: hexagoxel@hexagoxel.de
copyright: Copyright (C) 2021-2022 Lennart Spitzner
-- category:
build-type: Simple
extra-source-files: CHANGELOG.md
executable hxbrief
main-is: Main.hs
other-modules: Util
-- other-extensions:
build-depends: base >=4.14 && <4.16,
concurrent-output >= 1.10 && <1.11,
butcher >=1.3.3.2 && <1.4,
vty >=5.33 && <5.34,
stm >=2.5 && <2.6,
ansi-terminal >=0.11 && <0.12,
exceptions >=0.10.4 && <0.11,
process,
microlens >=0.4.12.0 && <0.5,
async >=2.2.3 && <2.3,
transformers >=0.5.6.2 &&<0.6,
clock >=0.8 &&<0.9
hs-source-dirs: src-hxbrief
default-language: Haskell2010
ghc-options: -rtsopts -threaded -Wall
default-extensions:
MultiParamTypeClasses
FunctionalDependencies
FlexibleContexts
FlexibleInstances
ScopedTypeVariables
LambdaCase

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let
haskellNixSrc = builtins.fetchTarball
https://github.com/input-output-hk/haskell.nix/archive/e3933cbb701e5bc61c18f620a4fd43c55f5c026e.tar.gz;
haskellNix = import haskellNixSrc { version = 2; };
nixpkgsSrc = haskellNix.sources.nixpkgs-2105;
in
{ nixpkgs ? import nixpkgsSrc haskellNix.nixpkgsArgs
, ghc-ver ? "ghc8107"
, index-state ? "2021-07-01T00:00:00Z"
, index-sha256 ? null
, plan-sha256 ? null
, materialized ? null
}:
with nixpkgs;
let
gitignoreSrc = nixpkgs.fetchFromGitHub {
owner = "hercules-ci";
repo = "gitignore.nix";
rev = "c4662e662462e7bf3c2a968483478a665d00e717";
sha256 = "sha256:1npnx0h6bd0d7ql93ka7azhj40zgjp815fw2r6smg8ch9p7mzdlx";
};
inherit (import gitignoreSrc { inherit (nixpkgs) lib; }) gitignoreFilter;
cleanedSource = nixpkgs.lib.cleanSourceWith {
name = "hxtools";
src = ./.;
filter = p: t:
let baseName = baseNameOf (toString p);
in gitignoreFilter ./../.. p t
&& baseName != ".gitignore"
&& baseName != "nix"
&& baseName != "ci-out"
&& (builtins.match ".*\.nix" baseName == null);
};
sdist = nixpkgs.stdenvNoCC.mkDerivation {
name = "hxtools" + "-sdist";
src = cleanedSource;
buildInputs = [ nixpkgs.bash nixpkgs.cabal-install ];
phases = [ "unpackPhase" "buildPhase" ];
buildPhase = ''
mkdir -p $out
cabal sdist -o $out
'';
};
sdist-unpacked = nixpkgs.stdenvNoCC.mkDerivation {
name = "hxtools" + "-sdist-unpacked";
src = cleanedSource;
buildInputs = [
nixpkgs.bash
nixpkgs.gnutar
];
phases = [ "buildPhase" ];
buildPhase = ''
mkdir -p "$out"
tar -xz -f "${sdist}"/*.tar.gz --strip-components=1 -C "$out"
for f in "$src"/stack*.yaml; do cp "$f" "$out"; done
'';
};
package-nix = nixpkgs.haskell-nix.callCabalProjectToNix {
src = sdist-unpacked;
inherit index-state index-sha256 plan-sha256 materialized;
compiler-nix-name = ghc-ver;
};
package-plan = nixpkgs.haskell-nix.importAndFilterProject { inherit (package-nix) projectNix sourceRepos src; };
hsPkgs =
let pkg-set = nixpkgs.haskell-nix.mkCabalProjectPkgSet
{ plan-pkgs = package-plan;
modules = [
{ ghc.package = nixpkgs.haskell-nix.compiler.${ghc-ver}; }
{ packages.hxtools.src = nixpkgs.haskell-nix.cleanSourceHaskell { src = cleanedSource; }; }
];
};
in pkg-set.config.hsPkgs;
in hsPkgs.hxtools.components.exes

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{ seaaye-spec = 1;
package-name = "hxtools";
targets =
{
hackage-8-10 = {
resolver = "hackage";
index-state = "2021-07-01T00:00:00Z";
ghc-ver = "ghc8107";
};
hackage-9-01 = {
resolver = "hackage";
index-state = "2021-07-01T00:00:00Z";
ghc-ver = "ghc901";
enabled = false;
};
hackage-9-02 = {
resolver = "hackage";
index-state = "2021-11-01T00:00:00Z";
ghc-ver = "ghc921";
enabled = false;
};
};
module-flags = [
# N.B.: There are haskell-nix module options. See the haskell-nix docs
# for details. Also, be careful about typos: In many cases you
# will not get errors but the typo'd flag will just not have any
# effect!
# { packages.my-package.flags.my-package-examples-examples = true; }
];
default-target = "hackage-8-10";
do-check-hackage = "hackage.haskell.org";
do-check-changelog = "changelog.md";
# local-config-path = ./nix/local-config.nix;
}

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{-# OPTIONS_GHC -Wno-unused-imports #-}
{-# LANGUAGE MultiWayIf #-}
module Main
( main
)
where
import Control.Concurrent ( threadDelay )
import qualified Control.Concurrent.Async as A
import Control.Concurrent.MVar
import Control.Monad ( forM_
, forever
, replicateM
, when
, zipWithM_
)
import Control.Monad.IO.Class ( MonadIO
, liftIO
)
import Control.Monad.Trans.State.Strict
( StateT(StateT)
, evalStateT
, execStateT
, get
, gets
, modify
, put
)
import Lens.Micro ( (<&>) )
import System.Clock ( Clock(RealtimeCoarse)
, TimeSpec
, diffTimeSpec
, getTime
, toNanoSecs
)
import Data.List ( isInfixOf
, isPrefixOf
, isSuffixOf
)
import Data.Maybe ( listToMaybe
, mapMaybe
)
import GHC.IO.Encoding ( setLocaleEncoding
, utf8
)
import qualified System.Console.ANSI as Ansi
import System.Console.Concurrent ( errorConcurrent
, flushConcurrentOutput
, outputConcurrent
, withConcurrentOutput
)
import System.Console.Regions ( ConsoleRegion
, RegionLayout(Linear)
, closeConsoleRegion
, displayConsoleRegions
, openConsoleRegion
, setConsoleRegion
)
import System.Exit ( exitWith )
import System.IO ( Handle
, hClose
, hGetLine
)
import qualified System.Process as P
import Text.Printf ( printf )
import qualified UI.Butcher.Monadic as B
import Util
data StreamKind = StdOut | StdErr
deriving (Eq, Show)
data KeepMode
= Drop -- dont forward
| Keep -- forward each line, apart from summaries
| Conflate -- summarize non-summarized lines as "*"
deriving (Eq, Show)
data Config = Config
{ c_command :: String
, c_lines :: Int
, c_keepStdout :: KeepMode
, c_keepStderr :: KeepMode
, c_summarize :: [String]
, c_outFile :: Maybe Handle
, c_errFile :: Maybe Handle
, c_sectionChar :: Maybe Char
, c_termWidth :: Maybe Int
}
-- config TODO:
-- - option to tee to file, or file-out + file-err
-- - parse sections?
-- - allow infix summaries?
-- - drop to "less" environment on error (interactive)
data State = State
{ s_config :: Config
, s_regions :: [ConsoleRegion]
, s_history :: [(StreamKind, String)]
, s_lines :: [(StreamKind, String)]
, s_countOut :: Int
, s_countErr :: Int
, s_globalStart :: TimeSpec
, s_lastLineTime :: TimeSpec
, s_summary :: Maybe ((StreamKind, String), Maybe (Int, String, [String]))
}
getTimeDiff :: Bool -> StateT State IO (Float, Float)
getTimeDiff updateCur = do
now <- liftIO $ getTime RealtimeCoarse
when updateCur $ modify $ \s -> s { s_lastLineTime = now }
s <- get
let diffNanos1 = toNanoSecs $ diffTimeSpec (s_globalStart s) now
let diffNanos2 = toNanoSecs $ diffTimeSpec (s_lastLineTime s) now
pure
( fromIntegral (diffNanos1 `div` 1000000) / (1000 :: Float)
, fromIntegral (diffNanos2 `div` 1000000) / (1000 :: Float)
)
stateLine :: Bool -> Bool -> StateT State IO String
stateLine updateCur showCur = do
(diffFloat1, diffFloat2) <- getTimeDiff updateCur
s <- get
let outStr = if showCur && diffFloat2 > 1.0
then printf
"waiting since %0.0fs … %0.1fs total, %i/%i lines stdout/stderr"
diffFloat2
diffFloat1
(s_countOut s)
(s_countErr s)
else printf "%0.3fs total, %i lines stdout %i lines stderr"
diffFloat1
(s_countOut s)
(s_countErr s)
pure $ fGrey ++ outStr
firstJust :: (a -> Maybe b) -> [a] -> Maybe b
firstJust f = listToMaybe . mapMaybe f
matchPattern :: String -> String -> Bool
matchPattern pat s = case break (== '*') pat of
("", "*" ) -> True
("", '*' : rest) -> case break (== '*') rest of
(start, "*") -> start `isInfixOf` s
(_ , "" ) -> rest `isSuffixOf` s
_ -> error $ "too many globs in pattern " ++ pat ++ "!"
(start, '*' : rest) -> if any (== '*') rest
then error "only one glob supported in patterns!"
else start `isPrefixOf` s && rest `isSuffixOf` s
("", "") -> error "empty pattern"
_ -> undefined
dispatchLine :: (StreamKind, String) -> StateT State IO ()
dispatchLine line@(kind, str) = do
conf <- gets s_config
liftIO $ case kind of
StdOut -> when (c_keepStdout conf /= Drop)
$ outputConcurrent (fReset ++ str ++ "\n")
StdErr ->
when (c_keepStderr conf /= Drop) $ errorConcurrent (fReset ++ str ++ "\n")
modify $ \s -> s { s_history = line : s_history s }
showPattern :: String -> String
showPattern p = p >>= \case
'*' -> setFGColorVivid Ansi.Yellow ++ "…" ++ fReset
x -> [x]
dispatchPat :: StreamKind -> Int -> String -> [String] -> StateT State IO ()
dispatchPat oldKind i oldPat prefix = do
let kindStr = case oldKind of
StdOut -> "stdout"
StdErr -> "stderr"
let betterName =
let a = unwords prefix
la = length a
in if
| i == 1 && la < 70
-> a
| la > length oldPat && la < 70
-> a ++ setFGColorVivid Ansi.Yellow ++ " …" ++ fReset
| otherwise
-> showPattern oldPat
let prettyPat =
fGrey
++ "("
++ show i
++ " lines "
++ kindStr
++ ")"
++ fReset
++ " "
++ betterName
++ "\n"
conf <- gets s_config
liftIO $ case oldKind of
StdOut -> when (c_keepStdout conf /= Drop) $ outputConcurrent prettyPat
StdErr -> when (c_keepStderr conf /= Drop) $ errorConcurrent prettyPat
summarizeLines :: (StreamKind, String) -> StateT State IO ()
summarizeLines cur@(kind, line) = do
s <- get
let conf = s_config s
let match = firstJust
(\pat -> if matchPattern pat line then Just pat else Nothing)
(c_summarize conf ++ case kind of
StdOut -> [ "*" | c_keepStdout conf == Conflate ]
StdErr -> [ "*" | c_keepStderr conf == Conflate ]
)
case (s_summary s, match) of
(Nothing, _) ->
put s { s_summary = Just (cur, match <&> \pat -> (1, pat, words line)) }
(Just (oldLine, Nothing), _) -> do
dispatchLine oldLine
put s { s_summary = Just (cur, match <&> \pat -> (1, pat, words line)) }
(Just ((oldKind, _), Just (i, oldPat, oldPrefix)), Nothing) -> do
dispatchPat oldKind i oldPat oldPrefix
put s { s_summary = Just (cur, Nothing) }
(Just ((oldKind, _), Just (i, oldPat, oldPrefix)), Just pat) -> if
| oldPat == pat && kind == oldKind -> do
let newPrefix =
let go [] = []
go ((a, b) : rest) | a == b = a : go rest
| otherwise = []
in go $ zip oldPrefix (words line)
put s { s_summary = Just (cur, Just (i + 1, pat, newPrefix)) }
| otherwise -> do
dispatchPat oldKind i oldPat oldPrefix
put s { s_summary = Just (cur, Just (1, pat, words line)) }
processLine :: (StreamKind, String) -> State -> IO State
processLine newPair@(kind, _) = execStateT $ do
conf <- gets s_config
modify $ \s -> s { s_lines = newPair : s_lines s }
do
s0 <- get
let (keep, over) = splitAt (c_lines conf - 1) (s_lines s0)
put s0 { s_lines = keep }
over `forM_` summarizeLines
case kind of
StdOut -> modify $ \s -> s { s_countOut = s_countOut s + 1 }
StdErr -> modify $ \s -> s { s_countErr = s_countErr s + 1 }
curLines <- gets s_lines
prettyLinesWithSummary <- do
let ellipse =
let go _ "" = ""
go 0 _ = "…"
go n (x : xs) = x : go (n - 1) xs
in case c_termWidth conf of
Nothing -> id
Just w -> go (w - 3)
let prettyLines = reverse $ take (c_lines conf) curLines <&> \case
(StdOut, line) -> fWhiteDis ++ "│ " ++ fReset ++ ellipse line
(StdErr, line) -> fRedDis ++ "│ " ++ fReset ++ ellipse line
summary <- gets s_summary
pure $ case summary of
Nothing -> prettyLines
Just ((StdOut, line), Nothing) ->
(fWhiteDis ++ "│ " ++ fReset ++ ellipse line) : prettyLines
Just ((StdOut, line), Just (1, _, _)) ->
(fWhiteDis ++ "│ " ++ fReset ++ ellipse line) : prettyLines
Just ((StdOut, _), Just (i, pat, _)) ->
( fWhiteDis
++ "│ "
++ fReset
++ showPattern pat
++ " ("
++ show i
++ " lines)"
)
: prettyLines
Just ((StdErr, line), Nothing) ->
(fRedDis ++ "│ " ++ ellipse line) : prettyLines
Just ((StdErr, line), Just (1, _, _)) ->
(fRedDis ++ "│ " ++ ellipse line) : prettyLines
Just ((StdErr, _), Just (i, pat, _)) ->
( fRedDis
++ "│ "
++ fReset
++ showPattern pat
++ " ("
++ show i
++ " lines)"
)
: prettyLines
let showCount = min (c_lines conf) (length prettyLinesWithSummary)
do -- make sure we have enough regions allocated
let need = showCount + 1
got <- gets (length . s_regions)
when (need > got) $ do
new <- liftIO $ replicateM (need - got) (openConsoleRegion Linear)
modify $ \s -> s { s_regions = s_regions s ++ new }
do
regions <- gets s_regions
liftIO $ zipWithM_
(\x region -> do
setConsoleRegion region x
)
prettyLinesWithSummary
(take showCount regions)
updateStateLine True
updateStateLine :: Bool -> StateT State IO ()
updateStateLine updateCur = do
line <- stateLine updateCur True
s <- get
liftIO $ setConsoleRegion
(last $ s_regions s)
( fGrey
++ "╰─ … "
++ line
++ " "
++ setFGColorVivid Ansi.Blue
++ (c_command $ s_config s)
++ fReset
)
main :: IO ()
main = B.mainFromCmdParser $ do
B.reorderStart
numLines :: Int <- B.addFlagReadParam "n" ["lines"] "LINES" (B.flagDefault 5)
keepStdout <- B.addSimpleBoolFlag "" ["keep-out"] mempty
keepStderr <- B.addSimpleBoolFlag "" ["keep-err"] mempty
keepBoth <- B.addSimpleBoolFlag "" ["keep"] mempty
dropStdout <- B.addSimpleBoolFlag "" ["drop-out"] mempty
dropStderr <- B.addSimpleBoolFlag "" ["drop-err"] mempty
dropBoth <- B.addSimpleBoolFlag "" ["drop"] mempty
conflateStdout <- B.addSimpleBoolFlag "" ["conflate-out"] mempty
conflateStderr <- B.addSimpleBoolFlag "" ["conflate-err"] mempty
conflateBoth <- B.addSimpleBoolFlag "" ["conflate"] mempty
summarize <- B.addFlagStringParams "s" ["summarize"] "STRING" mempty
section <- B.addSimpleBoolFlag "" ["section"] mempty
B.reorderStop
rest <- B.addParamRestOfInput "COMMAND" mempty <&> \case
'-' : '-' : ' ' : r -> r
'-' : '-' : r -> r
r -> r
B.addCmdImpl $ if null rest
then do
print "help"
else withConcurrentOutput $ do
setLocaleEncoding utf8
termSizeMay <- Ansi.getTerminalSize
let stdoutCheckCount =
length
$ [ () | keepStdout || keepBoth ]
++ [ () | conflateStdout || conflateBoth ]
++ [ () | dropStdout || dropBoth ]
let stderrCheckCount =
length
$ [ () | keepStderr || keepBoth ]
++ [ () | conflateStderr || conflateBoth ]
++ [ () | dropStderr || dropBoth ]
(lastLine, ec) <- displayConsoleRegions $ do
initialState <- do
startTime <- getTime RealtimeCoarse
line0 <- openConsoleRegion Linear
pure State
{ s_config = Config
{ c_command = rest
, c_lines = numLines
, c_keepStdout = if
| stdoutCheckCount > 1 -> error
"too many keep/drop/conflate for stdout!"
| keepStdout || keepBoth -> Keep
| conflateStdout || conflateBoth -> Conflate
| dropStdout || dropBoth -> Drop
| otherwise -> if null summarize
then Drop
else Conflate
, c_keepStderr = if
| stderrCheckCount > 1 -> error
"too many keep/drop/conflate for stderr!"
| keepStderr || keepBoth -> Keep
| conflateStderr || conflateBoth -> Conflate
| dropStderr || dropBoth -> Drop
| otherwise -> Keep
, c_summarize = summarize
, c_outFile = Nothing
, c_errFile = Nothing
, c_sectionChar = if section then Just '#' else Nothing
, c_termWidth = termSizeMay <&> snd
}
, 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 withCreateProcess f =
P.withCreateProcess
((P.shell rest) { P.std_in = P.CreatePipe
, P.std_out = P.CreatePipe
, P.std_err = P.CreatePipe
}
)
$ \(Just inp) (Just out) (Just err) hdl -> do
f inp out err hdl
withCreateProcess $ \inp out err hdl -> do
hClose inp
let outHandler = forever $ do
x <- hGetLine out
modifyMVar_ stateVar (processLine (StdOut, x))
let errHandler = forever $ do
x <- hGetLine err
modifyMVar_ stateVar (processLine (StdErr, x))
let tickHandler = forever $ do
threadDelay 333333
modifyMVar_ stateVar $ execStateT $ updateStateLine False
A.withAsync outHandler $ \outAsync ->
A.withAsync errHandler $ \errAsync ->
A.withAsync tickHandler $ \_tickAsync -> do
ec <- P.waitForProcess hdl
_a <- A.waitCatch outAsync
_b <- A.waitCatch errAsync
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, Nothing) -> dispatchLine line
Just ((kind, _), Just (i, pat, prefix)) ->
dispatchPat kind i pat prefix
finalState <- takeMVar stateVar
line <- evalStateT (stateLine False False) finalState
s_regions finalState `forM_` \r -> closeConsoleRegion r
-- outputConcurrent (show a ++ "\n")
-- outputConcurrent (show b ++ "\n")
pure (fGrey ++ line ++ ", ec=" ++ showEC ec ++ "\n", ec)
flushConcurrentOutput
outputConcurrent lastLine
exitWith ec

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{-# OPTIONS_GHC -Wno-unused-imports #-}
module Util where
import qualified System.Console.ANSI as Ansi
import System.Exit ( ExitCode
( ExitFailure
, ExitSuccess
)
)
fGrey :: String
fGrey = Ansi.setSGRCode [Ansi.SetColor Ansi.Foreground Ansi.Dull Ansi.White]
fWhite :: String
fWhite = Ansi.setSGRCode [Ansi.SetColor Ansi.Foreground Ansi.Vivid Ansi.White]
fWhiteDis :: String
fWhiteDis = ""
fRedDis :: String
fRedDis = "" -- TODO disabled until the bug is fixed.
-- setFGColorDull Ansi.Red
fReset :: String
fReset = Ansi.setSGRCode [Ansi.Reset]
setFGColorVivid :: Ansi.Color -> String
setFGColorVivid c =
Ansi.setSGRCode [Ansi.SetColor Ansi.Foreground Ansi.Vivid c]
setFGColorDull :: Ansi.Color -> String
setFGColorDull c = Ansi.setSGRCode [Ansi.SetColor Ansi.Foreground Ansi.Dull c]
showEC :: ExitCode -> String
showEC = \case
ExitSuccess -> setFGColorVivid Ansi.Green ++ "0" ++ fReset
ExitFailure i -> setFGColorVivid Ansi.Red ++ show i ++ fReset