From 7ffe2d8843bee42e9a26103c1e7d7019caba1f78 Mon Sep 17 00:00:00 2001
From: sof <unknown>
Date: Fri, 15 Apr 2005 21:51:28 +0000
Subject: [PATCH] [project @ 2005-04-15 21:51:28 by sof] back out
 Directory.hs:1.14 and directory.c:1.7; neither meant for
 HEAD

---
 ghc/lib/compat/Compat/Directory.hs |    2 +-
 ghc/lib/compat/cbits/directory.c   |  146 ++++++++++++++++++++++++------------
 2 files changed, 97 insertions(+), 51 deletions(-)

diff --git a/ghc/lib/compat/Compat/Directory.hs b/ghc/lib/compat/Compat/Directory.hs
index bce1da6..e6e4cd4 100644
--- a/ghc/lib/compat/Compat/Directory.hs
+++ b/ghc/lib/compat/Compat/Directory.hs
@@ -55,7 +55,7 @@ getAppUserDataDirectory appName = do
 #endif
 
 #if __GLASGOW_HASKELL__ && defined(mingw32_HOST_OS)
-foreign import stdcall unsafe "SHGetFolderPathA"
+foreign import ccall unsafe "directory.h __hscore_getFolderPath"
             c_SHGetFolderPath :: Ptr () 
                               -> CInt 
                               -> Ptr () 
diff --git a/ghc/lib/compat/cbits/directory.c b/ghc/lib/compat/cbits/directory.c
index af09655..79d6cd4 100644
--- a/ghc/lib/compat/cbits/directory.c
+++ b/ghc/lib/compat/cbits/directory.c
@@ -1,50 +1,96 @@
-#include "../../../includes/ghcconfig.h"
-
-#include "HsFFI.h"
-
-#if HAVE_LIMITS_H
-#include <limits.h>
-#endif
-#if HAVE_WINDOWS_H
-#include <windows.h>
-#endif
-
-#define INLINE /* nothing */
-
-/*
- * Following code copied from libraries/base/includes/HsBase.h
- */
-
-#ifdef PATH_MAX
-/* A size that will contain many path names, but not necessarily all
- * (PATH_MAX is not defined on systems with unlimited path length,
- * e.g. the Hurd).
- */
-INLINE HsInt __compat_long_path_size() { return PATH_MAX; } 
-#else
-INLINE HsInt __compat_long_path_size() { return 4096; }
-#endif
-
-#if defined(mingw32_HOST_OS)
-
-/* Make sure we've got the reqd CSIDL_ constants in scope;
- * w32api header files are lagging a bit in defining the full set.
- */
-#if !defined(CSIDL_APPDATA)
-#define CSIDL_APPDATA 0x001a
-#endif
-#if !defined(CSIDL_PERSONAL)
-#define CSIDL_PERSONAL 0x0005
-#endif
-#if !defined(CSIDL_PROFILE)
-#define CSIDL_PROFILE 0x0028
-#endif
-#if !defined(CSIDL_WINDOWS)
-#define CSIDL_WINDOWS 0x0024
-#endif
-
-INLINE int __hscore_CSIDL_PROFILE()  { return CSIDL_PROFILE;  }
-INLINE int __hscore_CSIDL_APPDATA()  { return CSIDL_APPDATA;  }
-INLINE int __hscore_CSIDL_WINDOWS()  { return CSIDL_WINDOWS;  }
-INLINE int __hscore_CSIDL_PERSONAL() { return CSIDL_PERSONAL; }
-#endif
+#include "HsFFI.h"
+
+#include "../../../includes/ghcconfig.h"
+
+#if HAVE_LIMITS_H
+#include <limits.h>
+#endif
+#if HAVE_WINDOWS_H
+#include <windows.h>
+#endif
+#include "directory.h"
+
+#define INLINE /* nothing */
+
+/*
+ * Following code copied from libraries/base/includes/HsBase.h
+ */
+
+#ifdef PATH_MAX
+/* A size that will contain many path names, but not necessarily all
+ * (PATH_MAX is not defined on systems with unlimited path length,
+ * e.g. the Hurd).
+ */
+INLINE HsInt __compat_long_path_size() { return PATH_MAX; } 
+#else
+INLINE HsInt __compat_long_path_size() { return 4096; }
+#endif
+
+#if defined(mingw32_HOST_OS)
+
+/* Make sure we've got the reqd CSIDL_ constants in scope;
+ * w32api header files are lagging a bit in defining the full set.
+ */
+#if !defined(CSIDL_APPDATA)
+#define CSIDL_APPDATA 0x001a
+#endif
+#if !defined(CSIDL_PERSONAL)
+#define CSIDL_PERSONAL 0x0005
+#endif
+#if !defined(CSIDL_PROFILE)
+#define CSIDL_PROFILE 0x0028
+#endif
+#if !defined(CSIDL_WINDOWS)
+#define CSIDL_WINDOWS 0x0024
+#endif
+
+INLINE int __hscore_CSIDL_PROFILE()  { return CSIDL_PROFILE;  }
+INLINE int __hscore_CSIDL_APPDATA()  { return CSIDL_APPDATA;  }
+INLINE int __hscore_CSIDL_WINDOWS()  { return CSIDL_WINDOWS;  }
+INLINE int __hscore_CSIDL_PERSONAL() { return CSIDL_PERSONAL; }
+
+#if __GLASGOW_HASKELL__ < 604
+/*
+ * Function: __hscore_getFolderPath()
+ *
+ * Late-bound version of SHGetFolderPath(), coping with OS versions
+ * that have shell32's lacking that particular API.
+ *
+ */
+typedef HRESULT (*HSCORE_GETAPPFOLDERFUNTY)(HWND,int,HANDLE,DWORD,char*);
+int
+__hscore_getFolderPath(HWND hwndOwner,
+		       int nFolder,
+		       HANDLE hToken,
+		       DWORD dwFlags,
+		       char*  pszPath)
+{
+    static int loaded_dll = 0;
+    static HMODULE hMod = (HMODULE)NULL;
+    static HSCORE_GETAPPFOLDERFUNTY funcPtr = NULL;
+    /* The DLLs to try loading entry point from */
+    char* dlls[] = { "shell32.dll", "shfolder.dll" };
+    
+    if (loaded_dll < 0) {
+	return (-1);
+    } else if (loaded_dll == 0) {
+	int i;
+	for(i=0;i < sizeof(dlls); i++) {
+	    hMod = LoadLibrary(dlls[i]);
+	    if ( hMod != NULL &&
+		 (funcPtr = (HSCORE_GETAPPFOLDERFUNTY)GetProcAddress(hMod, "SHGetFolderPathA")) ) {
+		loaded_dll = 1;
+		break;
+	    }
+	}
+	if (loaded_dll == 0) {
+	    loaded_dll = (-1);
+	    return (-1);
+	}
+    }
+    /* OK, if we got this far the function has been bound */
+    return (int)funcPtr(hwndOwner,nFolder,hToken,dwFlags,pszPath);
+    /* ToDo: unload the DLL on shutdown? */
+}
+#endif /* __GLASGOW_HASKELL__ < 604 */
+#endif
-- 
1.7.10.4