System.Plex.Internal

Generic versions of cmd, cmdTimeout etc

Documentation

executeFile' :: FilePath -> Bool -> [String] -> Maybe [(String, String)] -> IO ()

wrapped executeFile that reports error

readCommand :: FilePath -> [String] -> IO (ProcessID, IO String)

readCommand command args: given a command to run in a subprocess, and args to pass to it -- return the childPid of the subprocess, and a function for reading its output.

if it doesn't start with a forward-slash, the command is searched for in the current path.

readCommand_ :: NFData a => (Handle -> IO a) -> FilePath -> [String] -> IO (ProcessID, IO a)

More general version of readCommand_. First arg is a function to read from the combined stdout/stderr handle.

cmd :: FilePath -> [String] -> IO String

cmd command args: execute command with args; read combined stdout and stderr; return it as a string If there is an error executing the command, it'll get caught and a Haskell error message will get printed.

cmd_ :: NFData b => (Handle -> IO b) -> FilePath -> [String] -> IO b

more general version of cmd.

cmdTimeout :: FilePath -> [String] -> Int -> IO (Maybe String)

same as command, but with a timeout. Hard to get it do return nicely with timeout < about 10^5 microsecs

cmdTimeout_ :: NFData a => (Handle -> IO a) -> FilePath -> [String] -> Int -> IO (Maybe a)

more general version of cmdTimeout.