safe output to terminal for calckey inprogress and lookupkey

These are quite low-level, but still there is no point in displaying
escape sequences that have been embedded in a key to the terminal.

I think these are the only remaining commands that didn't use safe
output, except for cases where git-annex is speaking a protocol to
itself.

Sponsored-by: Kevin Mueller on Patreon

CHANGELOG

@@ -6,7 +6,9 @@ git-annex (10.20230408) UNRELEASED; urgency=medium
     characters as-is in filenames.
   * Control characters in non-filename data coming from the repository or
     other possible untrusted sources are filtered out of the display of many
-    commands.
+    commands. When the command output is intended for use in scripting,
+    control characters are only filtered out when displaying to the
+    terminal.
   * find, findkeys, examinekey: When outputting to a terminal and --format
     is not used, quote unusual characters.
     (Similar to the behavior of GNU find.)

Command/CalcKey.hs

@@ -11,6 +11,8 @@ import Command
 import Backend (genKey, defaultBackend)
 import Types.KeySource
 import Utility.Metered
+import Utility.Terminal
+import Utility.SafeOutput
 
 cmd :: Command
 cmd = noCommit $ noMessages $ dontCheck repoExists $
@@ -23,7 +25,9 @@ cmd = noCommit $ noMessages $ dontCheck repoExists $
 run :: () -> SeekInput -> String -> Annex Bool
 run _ _ file = tryNonAsync (genKey ks nullMeterUpdate =<< defaultBackend) >>= \case
 	Right (k, _) -> do
-		liftIO $ putStrLn $ serializeKey k
+		IsTerminal isterminal <- liftIO $ checkIsTerminal stdout
+		let sk = serializeKey k
+		liftIO $ putStrLn $ if isterminal then safeOutput sk else sk
 		return True
 	Left _err -> return False
   where

Command/Inprogress.hs

@@ -9,6 +9,8 @@ module Command.Inprogress where
 
 import Command
 import Annex.Transfer
+import Utility.Terminal
+import Utility.SafeOutput
 
 import qualified Data.Set as S
 
@@ -32,14 +34,14 @@ seek o = do
 	ts <- map (transferKey . fst) <$> getTransfers
 	case keyOptions o of
 		Just WantAllKeys ->
-			forM_ ts $ commandAction . start'
+			forM_ ts $ commandAction . (start' isterminal)
 		Just (WantSpecificKey k)
-			| k `elem` ts -> commandAction (start' k)
+			| k `elem` ts -> commandAction (start' isterminal k)
 			| otherwise -> commandAction stop
 		_ -> do
 			let s = S.fromList ts
 			let seeker = AnnexedFileSeeker
-				{ startAction = start s
+				{ startAction = start isterminal s
 				, checkContentPresent = Nothing
 				, usesLocationLog = False
 				}
@@ -48,14 +50,14 @@ seek o = do
   where
 	ww = WarnUnmatchLsFiles
 
-start :: S.Set Key -> SeekInput -> RawFilePath -> Key -> CommandStart
-start s _si _file k
-	| S.member k s = start' k
+start :: IsTerminal -> S.Set Key -> SeekInput -> RawFilePath -> Key -> CommandStart
+start isterminal s _si _file k
+	| S.member k s = start' isterminal k
 	| otherwise = stop
 
-start' :: Key -> CommandStart
-start' k = startingCustomOutput k $ do
+start' :: IsTerminal -> Key -> CommandStart
+start' (IsTerminal isterminal) k = startingCustomOutput k $ do
 	tmpf <- fromRawFilePath <$> fromRepo (gitAnnexTmpObjectLocation k)
 	whenM (liftIO $ doesFileExist tmpf) $
-		liftIO $ putStrLn tmpf
+		liftIO $ putStrLn (if isterminal then safeOutput tmpf else tmpf)
 	next $ return True

Command/LookupKey.hs

@@ -10,6 +10,8 @@ module Command.LookupKey where
 import Command
 import Annex.CatFile
 import qualified Git.LsFiles
+import Utility.Terminal
+import Utility.SafeOutput
 
 cmd :: Command
 cmd = notBareRepo $ noCommit $ noMessages $
@@ -23,7 +25,9 @@ run _ _ file = seekSingleGitFile file >>= \case
 	Nothing -> return False
 	Just file' -> catKeyFile file' >>= \case
 		Just k  -> do
-			liftIO $ putStrLn $ serializeKey k
+			IsTerminal isterminal <- liftIO $ checkIsTerminal stdout
+			let sk = serializeKey k
+			liftIO $ putStrLn $ if isterminal then safeOutput sk else sk
 			return True
 		Nothing -> return False