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authorJoey Hess2014-05-14 19:41:05 -0400
committerJoey Hess2014-05-14 19:41:05 -0400
commit7115d1ec162b4059b3e8e8f84bd8d5898c1db025 (patch)
tree42c1cce54e890e1d56484794ab33129132d8fee2 /src/Propellor/Exception.hs
parentffe371a9d42cded461236e972a24a142419d7fc4 (diff)
moved source code to src
This is to work around OSX's brain-damange regarding filename case insensitivity. Avoided moving config.hs, because it's a config file. Put in a symlink to make build work.
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diff --git a/src/Propellor/Exception.hs b/src/Propellor/Exception.hs
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+{-# LANGUAGE PackageImports #-}
+
+module Propellor.Exception where
+
+import qualified "MonadCatchIO-transformers" Control.Monad.CatchIO as M
+import Control.Exception
+
+import Propellor.Types
+import Propellor.Message
+
+-- | Catches IO exceptions and returns FailedChange.
+catchPropellor :: Propellor Result -> Propellor Result
+catchPropellor a = either err return =<< tryPropellor a
+ where
+ err e = warningMessage (show e) >> return FailedChange
+
+tryPropellor :: Propellor a -> Propellor (Either IOException a)
+tryPropellor = M.try