diff options
Diffstat (limited to 'Utility/Process.hs')
| -rw-r--r-- | Utility/Process.hs | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/Utility/Process.hs b/Utility/Process.hs index ff454f799..1807a1335 100644 --- a/Utility/Process.hs +++ b/Utility/Process.hs @@ -27,6 +27,7 @@ module Utility.Process ( withHandle, withIOHandles, withOEHandles, + withNullHandle, withQuietOutput, feedWithQuietOutput, createProcess, @@ -213,13 +214,16 @@ withOEHandles creator p a = creator p' $ a . oeHandles , std_err = CreatePipe } +withNullHandle :: (Handle -> IO a) -> IO a +withNullHandle = withFile devNull WriteMode + -- | Forces the CreateProcessRunner to run quietly; -- both stdout and stderr are discarded. withQuietOutput :: CreateProcessRunner -> CreateProcess -> IO () -withQuietOutput creator p = withFile devNull WriteMode $ \nullh -> do +withQuietOutput creator p = withNullHandle $ \nullh -> do let p' = p { std_out = UseHandle nullh , std_err = UseHandle nullh |