+{- | Returns the current directory for temporary files.
+
+On Unix, 'getTemporaryDirectory' returns the value of the @TMPDIR@
+environment variable or \"\/tmp\" if the variable isn\'t defined.
+On Windows, the function checks for the existence of environment variables in
+the following order and uses the first path found:
+
+*
+TMP environment variable.
+
+*
+TEMP environment variable.
+
+*
+USERPROFILE environment variable.
+
+*
+The Windows directory
+
+The operation may fail with:
+
+* 'UnsupportedOperation'
+The operating system has no notion of temporary directory.
+
+The function doesn\'t verify whether the path exists.
+-}
+getTemporaryDirectory :: IO FilePath
+getTemporaryDirectory = do
+#if __GLASGOW_HASKELL__ && defined(mingw32_HOST_OS)
+ allocaBytes long_path_size $ \pPath -> do
+ r <- c_GetTempPath (fromIntegral long_path_size) pPath
+ peekCString pPath
+#else
+ catch (getEnv "TMPDIR") (\ex -> return "/tmp")
+#endif
+
+#if __GLASGOW_HASKELL__ && defined(mingw32_HOST_OS)
+foreign import stdcall unsafe "dirUtils.h __hscore_getFolderPath"