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Fix getCanonicalFileNameSafe to work on all relevant ghc versions

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This commit is contained in:
Nikolay Yakimov 2015-08-17 10:39:49 +03:00
parent 0d78ee4096
commit 3dea19b270
1 changed files with 10 additions and 3 deletions
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13
Language/Haskell/GhcMod/Utils.hs
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@ -29,7 +29,7 @@ import qualified Data.Map as M
import Data.Maybe (fromMaybe)
import Data.Either (rights)
import Data.List (inits)
import System.FilePath (joinPath, splitPath)
import System.FilePath (joinPath, splitPath, normalise)
import Exception
import Language.Haskell.GhcMod.Error
import Language.Haskell.GhcMod.Types
@ -173,11 +173,18 @@ withMappedFile file action = getCanonicalFileNameSafe file >>= lookupMMappedFile
getCanonicalFileNameSafe :: (IOish m, GmEnv m) => FilePath -> m FilePath
getCanonicalFileNameSafe fn = do
pl <- liftIO $ rights <$> (mapM ((try :: IO FilePath -> IO (Either SomeException FilePath)) . canonicalizePath . joinPath) $ reverse $ inits $ splitPath fn)
let fn' = normalise fn
pl <- liftIO $ rights <$> (mapM ((try :: IO FilePath -> IO (Either SomeException FilePath)) . canonicalizePath . joinPath) $ reverse $ inits $ splitPath' fn')
return $
if (length pl > 0)
then joinPath $ (head pl):(drop (length pl - 1) (splitPath fn))
then joinPath $ (head pl):(drop (length pl - 1) (splitPath fn'))
else error "Current dir doesn't seem to exist?"
where
#if __GLASGOW_HASKELL__ < 710
splitPath' = (".":) . splitPath
#else
splitPath' = splitPath
#endif
mkRevRedirMapFunc :: (Functor m, GmState m, GmEnv m) => m (FilePath -> FilePath)
mkRevRedirMapFunc = do