Fix a URL

[haskell-directory.git] / System / Directory.hs

diff --git a/System/Directory.hs b/System/Directory.hs
index fcdb937..42ed6af 100644 (file)
--- a/System/Directory.hs
+++ b/System/Directory.hs
@@ -70,12 +70,14 @@ import Prelude hiding ( catch )
 
 import System.Environment      ( getEnv )
 import System.FilePath
+import System.IO
 import System.IO.Error hiding ( catch, try )
 import Control.Monad           ( when, unless )
 import Control.Exception
 
 #ifdef __NHC__
 import Directory
+import System (system)
 #endif /* __NHC__ */
 
 #ifdef __HUGS__
@@ -91,7 +93,6 @@ import Foreign.C
 import System.Posix.Types
 import System.Posix.Internals
 import System.Time             ( ClockTime(..) )
-import System.IO
 
 import GHC.IOBase      ( IOException(..), IOErrorType(..), ioException )
 
@@ -100,7 +101,7 @@ A directory contains a series of entries, each of which is a named
 reference to a file system object (file, directory etc.).  Some
 entries may be hidden, inaccessible, or have some administrative
 function (e.g. `.' or `..' under POSIX
-<http://www.opengroup.org/onlinepubs/007904975/toc.htm>), but in 
+<http://www.opengroup.org/onlinepubs/009695399/>), but in 
 this standard all such entries are considered to form part of the
 directory contents. Entries in sub-directories are not, however,
 considered to form part of the directory contents.
@@ -154,6 +155,29 @@ The operation may fail with:
 getPermissions :: FilePath -> IO Permissions
 getPermissions name = do
   withCString name $ \s -> do
+#ifdef mingw32_HOST_OS
+  -- stat() does a better job of guessing the permissions on Windows
+  -- than access() does.  e.g. for execute permission, it looks at the
+  -- filename extension :-)
+  --
+  -- I tried for a while to do this properly, using the Windows security API,
+  -- and eventually gave up.  getPermissions is a flawed API anyway. -- SimonM
+  allocaBytes sizeof_stat $ \ p_stat -> do
+  throwErrnoIfMinus1_ "getPermissions" $ c_stat s p_stat
+  mode <- st_mode p_stat
+  let read   = mode .&. s_IRUSR
+  let write  = mode .&. s_IWUSR
+  let exec   = mode .&. s_IXUSR
+  let is_dir = mode .&. s_IFDIR
+  return (
+    Permissions {
+      readable   = read  /= 0,
+      writable   = write /= 0,
+      executable = is_dir == 0 && exec /= 0,
+      searchable = is_dir /= 0 && exec /= 0
+    }
+   )
+#else
   read  <- c_access s r_OK
   write <- c_access s w_OK
   exec  <- c_access s x_OK
@@ -167,6 +191,7 @@ getPermissions name = do
       searchable = is_dir && exec == 0
     }
    )
+#endif
 
 {- |The 'setPermissions' operation sets the
 permissions for the file or directory.
@@ -513,6 +538,12 @@ copied to /new/, if possible.
 -}
 
 copyFile :: FilePath -> FilePath -> IO ()
+#ifdef __NHC__
+copyFile fromFPath toFPath =
+    do readFile fromFPath >>= writeFile toFPath
+       try (copyPermissions fromFPath toFPath)
+       return ()
+#else
 copyFile fromFPath toFPath =
     copy `catch` (\e -> case e of
                         IOException e ->
@@ -522,7 +553,7 @@ copyFile fromFPath toFPath =
                  bracketOnError openTmp cleanTmp $ \(tmpFPath, hTmp) ->
                  do allocaBytes bufferSize $ copyContents hFrom hTmp
                     hClose hTmp
-                    try (copyPermissions fromFPath toFPath)
+                    try (copyPermissions fromFPath tmpFPath)
                     renameFile tmpFPath toFPath
           openTmp = openBinaryTempFile (takeDirectory toFPath) ".copyFile.tmp"
           cleanTmp (tmpFPath, hTmp) = do try $ hClose hTmp
@@ -534,6 +565,7 @@ copyFile fromFPath toFPath =
                   when (count > 0) $ do
                           hPutBuf hTo buffer count
                           copyContents hFrom hTo buffer
+#endif
 
 -- | Given path referring to a file or directory, returns a
 -- canonicalized path, with the intent that two paths referring
@@ -841,6 +873,7 @@ foreign import ccall unsafe "__hscore_X_OK" x_OK :: CInt
 foreign import ccall unsafe "__hscore_S_IRUSR" s_IRUSR :: CMode
 foreign import ccall unsafe "__hscore_S_IWUSR" s_IWUSR :: CMode
 foreign import ccall unsafe "__hscore_S_IXUSR" s_IXUSR :: CMode
+foreign import ccall unsafe "__hscore_S_IFDIR" s_IFDIR :: CMode
 
 foreign import ccall unsafe "__hscore_long_path_size"
   long_path_size :: Int