X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=System%2FDirectory.hs;h=cafe759c635548d616769404613efef306fc2520;hb=dd70cacd4793c4497136829c50ef31f330163638;hp=295d3a50aa01a7b2daff1b25954cb4e7b89cbf45;hpb=819adca5f17b40ee129e4a30edf685f817febbf9;p=ghc-base.git

diff --git a/System/Directory.hs b/System/Directory.hs
index 295d3a5..cafe759 100644
--- a/System/Directory.hs
+++ b/System/Directory.hs
@@ -836,8 +836,10 @@ getHomeDirectory =
   allocaBytes long_path_size $ \pPath -> do
      r <- c_SHGetFolderPath nullPtr csidl_PROFILE nullPtr 0 pPath
      if (r < 0)
-       then c_SHGetFolderPath nullPtr csidl_WINDOWS nullPtr 0 pPath
-       else return 0
+       then do
+          r <- c_SHGetFolderPath nullPtr csidl_WINDOWS nullPtr 0 pPath
+	  when (r < 0) (raiseUnsupported "System.Directory.getHomeDirectory")
+       else return ()
      peekCString pPath
 #else
   getEnv "HOME"
@@ -875,6 +877,7 @@ getAppUserDataDirectory appName = do
 #if __GLASGOW_HASKELL__ && defined(mingw32_HOST_OS)
   allocaBytes long_path_size $ \pPath -> do
      r <- c_SHGetFolderPath nullPtr csidl_APPDATA nullPtr 0 pPath
+     when (r<0) (raiseUnsupported "System.Directory.getAppUserDataDirectory")
      s <- peekCString pPath
      return (s++'\\':appName)
 #else
@@ -908,6 +911,7 @@ getUserDocumentsDirectory = do
 #if __GLASGOW_HASKELL__ && defined(mingw32_HOST_OS)
   allocaBytes long_path_size $ \pPath -> do
      r <- c_SHGetFolderPath nullPtr csidl_PERSONAL nullPtr 0 pPath
+     when (r<0) (raiseUnsupported "System.Directory.getUserDocumentsDirectory")
      peekCString pPath
 #else
   getEnv "HOME"
@@ -950,7 +954,7 @@ getTemporaryDirectory = do
 #endif
 
 #if __GLASGOW_HASKELL__ && defined(mingw32_HOST_OS)
-foreign import stdcall unsafe "SHGetFolderPath" 
+foreign import stdcall unsafe "dirUtils.h __hscore_getFolderPath"
             c_SHGetFolderPath :: Ptr () 
                               -> CInt 
                               -> Ptr () 
@@ -963,4 +967,8 @@ foreign import ccall unsafe "__hscore_CSIDL_WINDOWS"  csidl_WINDOWS  :: CInt
 foreign import ccall unsafe "__hscore_CSIDL_PERSONAL" csidl_PERSONAL :: CInt
 
 foreign import stdcall unsafe "GetTempPath" c_GetTempPath :: CInt -> CString -> IO CInt
+
+raiseUnsupported loc = 
+   ioException (IOError Nothing UnsupportedOperation loc "unsupported operation" Nothing)
+
 #endif