brittany/data/Test513.hs

26 lines
897 B
Haskell

-- brittany { lconfig_columnAlignMode: { tag: ColumnAlignModeDisabled }, lconfig_indentPolicy: IndentPolicyLeft }
{-# LANGUAGE MultiWayIf #-}
readMergePersConfig path shouldCreate conf = do
exists <- liftIO $ System.Directory.doesFileExist path
if
| exists -> do
contents <- liftIO $ ByteString.readFile path -- no lazy IO, tyvm.
fileConf <- case Data.Yaml.decodeEither contents of
Left e -> do
liftIO
$ putStrErrLn
$ "error reading in brittany config from "
++ path
++ ":"
liftIO $ putStrErrLn e
mzero
Right x -> return x
return $ fileConf Semigroup.<> conf
| shouldCreate -> do
liftIO $ ByteString.writeFile path $ Data.Yaml.encode $ cMap
(Option . Just . runIdentity)
staticDefaultConfig
return $ conf
| otherwise -> do
return conf