Code cleaning for recent changes

1 files changed, 34 insertions, 27 deletions

diff --git a/System/Posix/Temp.hsc b/System/Posix/Temp.hsc
index b40e513..26ce1c3 100644
--- a/System/Posix/Temp.hsc
+++ b/System/Posix/Temp.hsc
@@ -23,14 +23,16 @@ module System.Posix.Temp (
 
 #include "HsUnix.h"
 
+#if !HAVE_MKSTEMPS
 import Control.Exception (throwIO)
+#endif
+import Foreign.C
 import System.IO
-import System.Posix.IO
-import System.Posix.Types
-#if !defined(__GLASGOW_HASKELL__) && !defined(__HUGS__)
+#if !HAVE_MKDTEMP
 import System.Posix.Directory (createDirectory)
 #endif
-import Foreign.C
+import System.Posix.IO
+import System.Posix.Types
 
 #if __GLASGOW_HASKELL__ > 700
 import System.Posix.Internals (withFilePath, peekFilePath)
@@ -49,6 +51,11 @@ peekFilePath :: CString -> IO FilePath
 peekFilePath = peekCString
 #endif
 
+#if defined(__GLASGOW_HASKELL__) || defined(__HUGS__)
+foreign import ccall unsafe "HsUnix.h __hscore_mkstemp"
+  c_mkstemp :: CString -> IO CInt
+#endif
+
 -- | Make a unique filename and open it for reading\/writing. The returned
 -- 'FilePath' is the (possibly relative) path of the created file, which is
 -- padded with 6 random characters. The argument is the desired prefix of the
@@ -71,22 +78,25 @@ mkstemp template' = do
   return (name, h)
 #endif
 
-#if defined(__GLASGOW_HASKELL__) || defined(__HUGS__)
-foreign import ccall unsafe "HsUnix.h __hscore_mkstemp"
-  c_mkstemp :: CString -> IO CInt
+#if HAVE_MKSTEMPS
+foreign import ccall unsafe "HsUnix.h __hscore_mkstemps"
+  c_mkstemps :: CString -> CInt -> IO CInt
 #endif
 
--- |'mkstemps' - make a unique filename with a given prefix and suffix 
--- and open it for reading\/writing (only safe on GHC & Hugs).
--- The returned 'FilePath' is the (possibly relative) path of
--- the created file, which contains  6 random characters in between
--- the prefix and suffix.
+-- | Make a unique filename with a given prefix and suffix and open it for
+-- reading\/writing. The returned 'FilePath' is the (possibly relative) path of
+-- the created file, which contains  6 random characters in between the prefix
+-- and suffix. The first argument is the desired prefix of the filepath of the
+-- temporary file to be created. The second argument is the suffix of the
+-- temporary file to be created.
+--
+-- If you are using as system that doesn't support the mkstemps glibc function
+-- (supported in glibc > 2.11) then this function simply throws an error.
 mkstemps :: String -> String -> IO (FilePath, Handle)
 mkstemps prefix suffix = do
 #if HAVE_MKSTEMPS
   let template = prefix ++ "XXXXXX" ++ suffix
-      lenOfsuf :: CInt
-      lenOfsuf = fromIntegral $ length suffix
+      lenOfsuf = (fromIntegral $ length suffix) :: CInt
   withFilePath template $ \ ptr -> do
     fd <- throwErrnoIfMinus1 "mkstemps" (c_mkstemps ptr lenOfsuf)
     name <- peekFilePath ptr
@@ -96,17 +106,18 @@ mkstemps prefix suffix = do
   throwIO . userError $ "mkstemps: System does not have a mkstemp C function." 
 #endif
 
-#if HAVE_MKSTEMPS
-foreign import ccall unsafe "HsUnix.h __hscore_mkstemps"
-  c_mkstemps :: CString -> CInt -> IO CInt
+#if HAVE_MKDTEMP
+foreign import ccall unsafe "HsUnix.h __hscore_mkdtemp"
+  c_mkdtemp :: CString -> IO CString
 #endif
 
 -- | Make a unique directory. The returned 'FilePath' is the path of the
 -- created directory, which is padded with 6 random characters. The argument is
 -- the desired prefix of the filepath of the temporary directory to be created.
 --
--- If you aren't using GHC or Hugs then this function simply wraps mktemp and
--- so shouldn't be considered safe.
+-- If you are using as system that doesn't support the mkdtemp glibc function
+-- (supported in glibc > 2.1.91) then this function uses mktemp and so
+-- shouldn't be considered safe.
 mkdtemp :: String -> IO FilePath
 mkdtemp template' = do
   let template = template' ++ "XXXXXX"
@@ -121,12 +132,11 @@ mkdtemp template' = do
   return name
 #endif
 
-#if HAVE_MKDTEMP
-foreign import ccall unsafe "HsUnix.h __hscore_mkdtemp"
-  c_mkdtemp :: CString -> IO CString
-#endif
-
 #if (!defined(__GLASGOW_HASKELL__) && !defined(__HUGS__)) || !HAVE_MKDTEMP
+
+foreign import ccall unsafe "mktemp"
+  c_mktemp :: CString -> IO CString
+
 -- | Make a unique file name It is required that the template have six trailing
 -- \'X\'s. This function should be considered deprecated.
 {-# WARNING mktemp "This function is unsafe; use mkstemp instead" #-}
@@ -135,8 +145,5 @@ mktemp template = do
   withFilePath template $ \ ptr -> do
     ptr <- throwErrnoIfNull "mktemp" (c_mktemp ptr)
     peekFilePath ptr
-
-foreign import ccall unsafe "mktemp"
-  c_mktemp :: CString -> IO CString
 #endif