X-Git-Url: http://git.cielonegro.org/gitweb.cgi?p=EsounD.git;a=blobdiff_plain;f=Sound%2FEsounD%2FInternals.hs;h=f4b067f0903cf30fc9a23b62ccb13dee41c5e4fe;hp=60cf4b922b39d02aea0e26ab24e6b7047691ee75;hb=808cc2f4700bc0b2f77cee443dd237d415b4d5d7;hpb=cb4f21e26b30aff97bd7615fba86405e50b163b3

diff --git a/Sound/EsounD/Internals.hs b/Sound/EsounD/Internals.hs
index 60cf4b9..f4b067f 100644
--- a/Sound/EsounD/Internals.hs
+++ b/Sound/EsounD/Internals.hs
@@ -14,10 +14,10 @@ module Sound.EsounD.Internals
     , deinterleave
 
     , toLSV
-
     , wrapSocket
     , closeSocket
     , withCStrOrNull
+    , failOnError
     )
     where
 import Bindings.EsounD
@@ -28,6 +28,7 @@ import Foreign.C.String
 import Foreign.C.Types
 import Foreign.Ptr
 import Foreign.Storable
+import Prelude.Unicode
 import System.IO
 import System.Posix.IO
 import System.Posix.Types
@@ -97,3 +98,8 @@ closeSocket h = do (Fd fd) ← handleToFd h
 withCStrOrNull ∷ Maybe String → (CString → IO a) → IO a
 withCStrOrNull Nothing  f = f nullPtr
 withCStrOrNull (Just s) f = withCString s f
+
+failOnError ∷ Monad m ⇒ String → CInt → m ()
+failOnError msg rv
+    | rv ≤ 0   = fail msg
+    | otherwise = return ()