initial commit

native/exports_windows.go

@@ -0,0 +1,64 @@
+//go:build windows
+
+package main
+
+import "C"
+import (
+	"syscall"
+	"unsafe"
+)
+
+var callbackPtr uintptr
+
+func hostSendViaCallback(event string, payload []byte) {
+	cb := callbackPtr
+	if cb == 0 {
+		return
+	}
+	eventBytes := []byte(event)
+	var evPtr, plPtr uintptr
+	evLen := uintptr(len(eventBytes))
+	plLen := uintptr(len(payload))
+	if len(eventBytes) > 0 {
+		evPtr = uintptr(unsafe.Pointer(&eventBytes[0]))
+	}
+	if len(payload) > 0 {
+		plPtr = uintptr(unsafe.Pointer(&payload[0]))
+	}
+	syscall.SyscallN(cb, evPtr, evLen, plPtr, plLen)
+}
+
+//export PluginSetCallback
+func PluginSetCallback(cb C.ulonglong) {
+	callbackPtr = uintptr(cb)
+	setSend(hostSendViaCallback)
+}
+
+//export PluginOnLoad
+func PluginOnLoad(hostInfo *C.char, hostInfoLen C.int, cb C.ulonglong) C.int {
+	callbackPtr = uintptr(cb)
+	setSend(hostSendViaCallback)
+	data := C.GoBytes(unsafe.Pointer(hostInfo), hostInfoLen)
+	if err := handleInit(data); err != nil {
+		return 1
+	}
+	return 0
+}
+
+//export PluginOnEvent
+func PluginOnEvent(event *C.char, eventLen C.int, payload *C.char, payloadLen C.int) C.int {
+	ev := C.GoStringN(event, eventLen)
+	var pl []byte
+	if payloadLen > 0 {
+		pl = C.GoBytes(unsafe.Pointer(payload), payloadLen)
+	}
+	if err := handleEvent(ev, pl); err != nil {
+		return 1
+	}
+	return 0
+}
+
+//export PluginOnUnload
+func PluginOnUnload() {
+	handleUnload()
+}