CGO is realy Cool！

• CGO is realy Cool!!

c/c++ in json and struct Mutual transformation is a troublesome problem , It's really not easy to deal with this problem with low intrusion ,cgo in go public c Structure definition of , stay go In the middle of json Operation and other subsequent businesses feel like a good idea .

package main//#cgo CFLAGS: -I /code/xxx/include//#include "xxx.h"/*typedef struct Point { int x , y;} Point;struct struct_xxx xxx;*/import "C"import (	"fmt"	"log"	"nep_go_st/json")type CPoint struct {	Point C.Point `json:"point"`}func main() {	point := C.Point{x: 1, y: 2}	ret1, err := json.Marshal(point)	if err != nil {		log.Fatal(err)	}	fmt.Println(string(ret1))	ret1, err = json.Marshal(C.xxx)	if err != nil {		log.Fatal(err)	}	fmt.Println(string(ret1))}

One thing to note cstruct The fields in are lowercase and go struct It will also be recognized as isUnexported, If it is changed to uppercase, it can be used normally in json See in string ;
If you don't want to change it cstruct Defined in the , Then you can put encode/json Copy it to the project directory and make customized modifications , modify encode.go Medium isUnexported by true, Even if the field is lowercase, you can see it in the output window ;

miao !

• Reference resources :
  https://stackoverflow.com/questions/54101022/golang-struct-with-c-struct-in-cgo