diff options
Diffstat (limited to 'Utility/SafeCommand.hs')
-rw-r--r-- | Utility/SafeCommand.hs | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/Utility/SafeCommand.hs b/Utility/SafeCommand.hs index 82e35049a..9102b7267 100644 --- a/Utility/SafeCommand.hs +++ b/Utility/SafeCommand.hs @@ -19,25 +19,23 @@ import Prelude -- | Parameters that can be passed to a shell command. data CommandParam - = Params String -- ^ Contains multiple parameters, separated by whitespace - | Param String -- ^ A single parameter + = Param String -- ^ A parameter | File FilePath -- ^ The name of a file deriving (Eq, Show, Ord) -- | Used to pass a list of CommandParams to a function that runs -- a command and expects Strings. -} toCommand :: [CommandParam] -> [String] -toCommand = concatMap unwrap +toCommand = map unwrap where - unwrap (Param s) = [s] - unwrap (Params s) = filter (not . null) (split " " s) + unwrap (Param s) = s -- Files that start with a non-alphanumeric that is not a path -- separator are modified to avoid the command interpreting them as -- options or other special constructs. unwrap (File s@(h:_)) - | isAlphaNum h || h `elem` pathseps = [s] - | otherwise = ["./" ++ s] - unwrap (File s) = [s] + | isAlphaNum h || h `elem` pathseps = s + | otherwise = "./" ++ s + unwrap (File s) = s -- '/' is explicitly included because it's an alternative -- path separator on Windows. pathseps = pathSeparator:"./" |