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{- Copyright 2017 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
module VirtualTerminal where
import System.FilePath
import System.Directory
import System.Process
import System.Environment
-- | Finds a virtual terminal program that looks like it will work
-- to run a command with some parameters.
--
-- Note that the parameters are exposed to the shell by some virtual
-- terminals, but not by others.
runInVirtualTerminal :: String -> String -> [String] -> IO (Maybe CreateProcess)
runInVirtualTerminal title cmd params = do
path <- getSearchPath
mdisplay <- lookupEnv "DISPLAY"
possibles <- case mdisplay of
Just _ -> return $ do
p <- path
c <- xtermcmds
return (p, c)
Nothing -> return []
find possibles
where
find [] = return Nothing
find ((d, (c, ps)):rest) = do
exists <- doesFileExist (d </> c)
if exists
then return $ Just $ proc (d </> c) ps
else find rest
-- Ordered list; generally xfce user may have gnome stuff
-- installed, and only fall back to the older terminals when
-- nothing else is available.
xtermcmds =
[ ("xfce4-terminal", std)
, ("gnome-terminal", ["-e", unwords (cmd:params)])
, ("xterm", std)
, ("rxvt", ["-T", title, "-e", cmd])
]
std = ["-T", title, "-e", unwords (cmd:params)]
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