From 18e70a49274033d0598fcdfe830f80b0cc3552f0 Mon Sep 17 00:00:00 2001
From: Joey Hess <joeyh@joeyh.name>
Date: Thu, 4 May 2017 15:16:04 -0400
Subject: --replay: make Space advance to next output

This commit was sponsored by John Peloquin on Patreon.
---
 Pty.hs | 65 ++++++++++++++++++++++++++++++++++++++++-------------------------
 1 file changed, 40 insertions(+), 25 deletions(-)

(limited to 'Pty.hs')

diff --git a/Pty.hs b/Pty.hs
index 35910cc..92ff4e2 100644
--- a/Pty.hs
+++ b/Pty.hs
@@ -3,7 +3,15 @@
  - Licensed under the GNU AGPL version 3 or higher.
  -}
 
-module Pty (Pty, runWithPty, readPty, writePty, inRawMode) where
+module Pty (
+	Pty,
+	runWithPty,
+	readPty,
+	writePty,
+	inRawMode,
+	withoutEcho,
+	withTerminalAttributes,
+) where
 
 import System.Posix
 import System.Posix.Pty
@@ -30,7 +38,7 @@ runWithPty cmd params a = bracket setup cleanup go
 		-- Set the pty's terminal attributes to the same ones that
 		-- the outer terminal had.
 		System.Posix.Pty.setTerminalAttributes p as Immediately
-		setRawMode as
+		System.Posix.setTerminalAttributes stdInput (setRawMode as) Immediately
 		return (p, ph, as)
 	cleanup (p, ph, as) = do
 		-- Needed in case the provided action throws an exception
@@ -46,33 +54,40 @@ runWithPty cmd params a = bracket setup cleanup go
 			Nothing -> return ()
 			Just sz -> resizePty p (Console.width sz, Console.height sz)
 
-inRawMode :: IO a -> IO a
-inRawMode a = bracket setup cleanup go
+withTerminalAttributes :: (TerminalAttributes -> TerminalAttributes) -> IO a -> IO a
+withTerminalAttributes f a = bracket setup cleanup go
   where
 	setup = do
 		as <- System.Posix.getTerminalAttributes stdInput
-		setRawMode as
+		System.Posix.setTerminalAttributes stdInput (f as) Immediately
 		return as
 	cleanup as = System.Posix.setTerminalAttributes stdInput as Immediately
 	go _ = a
 
--- This is similar to cfmakeraw(3).
-setRawMode :: TerminalAttributes -> IO ()
-setRawMode as = do
-	let as' = as
-		`withoutMode` IgnoreBreak
-		`withoutMode` InterruptOnBreak
-		`withoutMode` CheckParity
-		`withoutMode` StripHighBit
-		`withoutMode` MapLFtoCR
-		`withoutMode` IgnoreCR
-		`withoutMode` MapCRtoLF
-		`withoutMode` StartStopOutput
-		`withoutMode` ProcessOutput
-		`withoutMode` EnableEcho
-		`withoutMode` EchoLF
-		`withoutMode` ProcessInput
-		`withoutMode` KeyboardInterrupts
-		`withoutMode` ExtendedFunctions
-		`withoutMode` EnableParity
-	System.Posix.setTerminalAttributes stdInput as' Immediately
+-- | This is similar to cfmakeraw(3).
+inRawMode :: IO a -> IO a
+inRawMode = withTerminalAttributes setRawMode
+
+setRawMode :: TerminalAttributes -> TerminalAttributes
+setRawMode as = as
+	`withoutMode` IgnoreBreak
+	`withoutMode` InterruptOnBreak
+	`withoutMode` CheckParity
+	`withoutMode` StripHighBit
+	`withoutMode` MapLFtoCR
+	`withoutMode` IgnoreCR
+	`withoutMode` MapCRtoLF
+	`withoutMode` StartStopOutput
+	`withoutMode` ProcessOutput
+	`withoutMode` EnableEcho
+	`withoutMode` EchoLF
+	`withoutMode` ProcessInput
+	`withoutMode` KeyboardInterrupts
+	`withoutMode` ExtendedFunctions
+	`withoutMode` EnableParity
+
+-- | Disable terminal echo.
+withoutEcho :: IO a -> IO a
+withoutEcho = withTerminalAttributes $ \as -> as
+	`withoutMode` EnableEcho
+
-- 
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