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--- Copyright (C) 2017 Daniel Gröber <dxld ÄT darkboxed DOT org>
---
--- This program is free software: you can redistribute it and/or modify
--- it under the terms of the GNU Affero General Public License as published by
--- the Free Software Foundation, either version 3 of the License, or
--- (at your option) any later version.
---
--- This program is distributed in the hope that it will be useful,
--- but WITHOUT ANY WARRANTY; without even the implied warranty of
--- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
--- GNU Affero General Public License for more details.
---
--- You should have received a copy of the GNU Affero General Public License
--- along with this program. If not, see <http://www.gnu.org/licenses/>.
-
-{-# LANGUAGE ScopedTypeVariables #-}
-
-{-|
-Module : CabalHelper.Compiletime.Log
-Description : Basic logging facilities
-License : AGPL-3
--}
-
-module CabalHelper.Compiletime.Log where
-
-import Control.Monad
-import Control.Monad.IO.Class
-import Control.Exception as E
-import Data.String
-import System.IO
-import Prelude
-
-import CabalHelper.Compiletime.Types
-
-vLog :: MonadIO m => Options -> String -> m ()
-vLog Options { verbose = True } msg =
- liftIO $ hPutStrLn stderr msg
-vLog _ _ = return ()
-
-logIOError :: Options -> String -> IO (Maybe a) -> IO (Maybe a)
-logIOError opts label a = do
- a `E.catch` \(ex :: IOError) -> do
- vLog opts $ label ++ ": " ++ show ex
- return Nothing