+
+/*
+ * Function: __hscore_renameFile()
+ *
+ * Provide Haskell98's semantics for renaming files and directories.
+ * It mirrors that of POSIX.1's behaviour for rename() by overwriting
+ * the target if it exists (the MS CRT implementation of rename() returns
+ * an error
+ *
+ */
+HsInt
+__hscore_renameFile( HsAddr src,
+ HsAddr dest)
+{
+#if defined(mingw32_HOST_OS) || defined(__MINGW32__) || defined(_MSC_VER)
+ static int forNT = -1;
+
+ /* ToDo: propagate error codes back */
+ if (MoveFileA(src, dest)) {
+ return 0;
+ } else {
+ ;
+ }
+
+ /* Failed...it could be because the target already existed. */
+ if ( !GetFileAttributes(dest) ) {
+ /* No, it's not there - just fail. */
+ errno = toErrno(GetLastError());
+ return (-1);
+ }
+
+ if (forNT == -1) {
+ OSVERSIONINFO ovi;
+ ovi.dwOSVersionInfoSize = sizeof(ovi);
+ if ( !GetVersionEx(&ovi) ) {
+ errno = toErrno(GetLastError());
+ return (-1);
+ }
+ forNT = ((ovi.dwPlatformId & VER_PLATFORM_WIN32_NT) != 0);
+ }
+
+ if (forNT) {
+ /* Easy, go for MoveFileEx() */
+ if ( MoveFileExA(src, dest, MOVEFILE_REPLACE_EXISTING) ) {
+ return 0;
+ } else {
+ errno = toErrno(GetLastError());
+ return (-1);
+ }
+ }
+
+ /* No MoveFileEx() for Win9x, try deleting the target. */
+ /* Similarly, if the MoveFile*() ops didn't work out under NT */
+ if (DeleteFileA(dest)) {
+ if (MoveFileA(src,dest)) {
+ return 0;
+ } else {
+ errno = toErrno(GetLastError());
+ return (-1);
+ }
+ } else {
+ errno = toErrno(GetLastError());
+ return (-1);
+ }
+#else
+ return rename(src,dest);
+#endif
+}
+
+/*
+ * Function: __hscore_getFolderPath()
+ *
+ * Late-bound version of SHGetFolderPath(), coping with OS versions
+ * that have shell32's lacking that particular API.
+ *
+ */
+#if defined(mingw32_HOST_OS) || defined(__MINGW32__) || defined(_MSC_VER)
+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;
+
+ if (loaded_dll < 0) {
+ return (-1);
+ } else if (loaded_dll == 0) {
+ hMod = LoadLibrary("shell32.dll");
+ if (hMod == NULL) {
+ loaded_dll = (-1);
+ return (-1);
+ } else {
+ funcPtr = (HSCORE_GETAPPFOLDERFUNTY)GetProcAddress(hMod, "SHGetFolderPathA");
+ if (!funcPtr) {
+ loaded_dll = (-1);
+ return (-1);
+ } else {
+ loaded_dll = 1;
+ }
+ }
+ }
+ /* OK, if we got this far the function has been bound */
+ return (int)funcPtr(hwndOwner,nFolder,hToken,dwFlags,pszPath);
+ /* ToDo: unload the DLL? */
+}
+#endif