mirror of
https://github.com/joshuaclayton/unused.git
synced 2024-09-11 04:45:28 +03:00
Hook into interrupt to trigger other behavior
Why? ==== Unused hides the cursor and potentially does other things to the window that may leave it in an odd state. This introduces a hook to run any state cleanup, including re-enabling the cursor, when a user sends a SIGINT to the program.
This commit is contained in:
parent
5952306873
commit
11d35a6263
@ -5,7 +5,7 @@ import System.IO (hSetBuffering, BufferMode(NoBuffering), stdout)
|
||||
import Unused.Parser (parseLines)
|
||||
import Unused.Types (ParseResponse, RemovalLikelihood(..))
|
||||
import Unused.ResponseFilter (withOneOccurrence, withOneFile, withLikelihoods, ignoringPaths)
|
||||
import Unused.CLI (SearchRunner(..), executeSearch, printParseError, printSearchResults, resetScreen)
|
||||
import Unused.CLI (SearchRunner(..), executeSearch, printParseError, printSearchResults, resetScreen, withInterruptHandler)
|
||||
|
||||
data Options = Options
|
||||
{ oSearchRunner :: SearchRunner
|
||||
@ -15,7 +15,8 @@ data Options = Options
|
||||
}
|
||||
|
||||
main :: IO ()
|
||||
main = run =<< execParser
|
||||
main = withInterruptHandler $
|
||||
run =<< execParser
|
||||
(parseOptions `withInfo` "Analyze potentially unused code")
|
||||
|
||||
run :: Options -> IO ()
|
||||
|
@ -1,11 +1,31 @@
|
||||
module Unused.CLI.Util
|
||||
( resetScreen
|
||||
, withInterruptHandler
|
||||
, module System.Console.ANSI
|
||||
) where
|
||||
|
||||
import System.Console.ANSI
|
||||
import Control.Exception (throwTo)
|
||||
import System.Posix.Signals (Handler(Catch), installHandler, keyboardSignal)
|
||||
import Control.Concurrent (ThreadId, myThreadId)
|
||||
import System.Exit (ExitCode(ExitFailure))
|
||||
|
||||
resetScreen :: IO ()
|
||||
resetScreen = do
|
||||
clearScreen
|
||||
setCursorPosition 0 0
|
||||
|
||||
withInterruptHandler :: IO () -> IO ()
|
||||
withInterruptHandler body = do
|
||||
tid <- myThreadId
|
||||
_ <- installHandler keyboardSignal (Catch (handleInterrupt tid)) Nothing
|
||||
body
|
||||
|
||||
handleInterrupt :: ThreadId -> IO ()
|
||||
handleInterrupt tid = do
|
||||
resetScreen
|
||||
showCursor
|
||||
throwTo tid $ ExitFailure code
|
||||
where
|
||||
code = signalToInt $ 128 + keyboardSignal
|
||||
signalToInt s = read $ show s :: Int
|
||||
|
@ -40,6 +40,7 @@ library
|
||||
, regex-tdfa
|
||||
, terminal-progress-bar
|
||||
, ansi-terminal
|
||||
, unix
|
||||
default-language: Haskell2010
|
||||
|
||||
executable unused
|
||||
|
Loading…
Reference in New Issue
Block a user