init

go/internal/statebridge/replace_windows.go

@@ -0,0 +1,41 @@
+//go:build windows
+
+package statebridge
+
+import (
+	"os"
+	"syscall"
+	"unsafe"
+)
+
+var (
+	kernel32MoveFileEx = syscall.NewLazyDLL("kernel32.dll").NewProc("MoveFileExW")
+)
+
+const (
+	moveFileReplaceExisting = 0x1
+	moveFileWriteThrough    = 0x8
+)
+
+func replaceFile(source, destination string) error {
+	sourcePtr, err := syscall.UTF16PtrFromString(source)
+	if err != nil {
+		return err
+	}
+	destinationPtr, err := syscall.UTF16PtrFromString(destination)
+	if err != nil {
+		return err
+	}
+	result, _, callErr := kernel32MoveFileEx.Call(
+		uintptr(unsafe.Pointer(sourcePtr)),
+		uintptr(unsafe.Pointer(destinationPtr)),
+		moveFileReplaceExisting|moveFileWriteThrough,
+	)
+	if result == 0 {
+		if callErr != syscall.Errno(0) {
+			return callErr
+		}
+		return os.ErrInvalid
+	}
+	return nil
+}