61 lines
1.6 KiB
Go
61 lines
1.6 KiB
Go
package bridge
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/*
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#include "stdint.h"
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#include "dart_api/dart_api_dl.h"
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#include "dart_api/dart_api_dl.c"
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#include "dart_api/dart_native_api.h"
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// Go does not allow calling C function pointers directly.
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// we mock a function to call Dart_PostCObject_DL
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bool GoDart_PostCObject(Dart_Port_DL port, Dart_CObject* obj) {
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return Dart_PostCObject_DL(port, obj);
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}
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*/
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import "C"
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import (
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"encoding/json"
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"fmt"
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"unsafe"
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)
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type DartResponse struct {
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Success bool `json:"success"`
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Message string `json:"message"`
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Data string `json:"data"`
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}
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func InitDartApi(api unsafe.Pointer) {
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if C.Dart_InitializeApiDL(api) != 0 {
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panic("failed to create dart bridge")
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} else {
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fmt.Println("Dart Api DL is initialized")
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}
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}
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func SendResponseToPort(port int64, response *DartResponse) {
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var obj C.Dart_CObject
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obj._type = C.Dart_CObject_kString
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responseJson, _ := json.Marshal(response)
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msg_obj := C.CString(string(responseJson)) // go string -> char*s
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// union type, we do a force convertion
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ptr := unsafe.Pointer(&obj.value[0])
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*(**C.char)(ptr) = msg_obj
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ret := C.GoDart_PostCObject(C.Dart_Port_DL(port), &obj)
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if !ret {
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fmt.Println("ERROR: post to port ", port, " failed", responseJson)
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}
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}
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func SendStringToPort(port int64, msg string) {
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var obj C.Dart_CObject
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obj._type = C.Dart_CObject_kString
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msg_obj := C.CString(msg) // go string -> char*s
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// union type, we do a force convertion
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ptr := unsafe.Pointer(&obj.value[0])
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*(**C.char)(ptr) = msg_obj
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ret := C.GoDart_PostCObject(C.Dart_Port_DL(port), &obj)
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if !ret {
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fmt.Println("ERROR: post to port ", port, " failed", msg)
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}
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}
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