StructIntMap

structintmap.go

package main

import "reflect"

func StructIntMap(value interface{}) map[string]int {
	m := make(map[string]int)
	structIntMap(reflect.ValueOf(value), m, "")
	return m
}

func fieldPath(path, name string) string {
	if len(path) == 0 {
		return name
	}
	return path + "." + name
}

func structIntMap(st reflect.Value, m map[string]int, path string) {
	if st.Kind() == reflect.Ptr {
		st = st.Elem()
	}

	t := st.Type()
	for i := 0; i < t.NumField(); i++ {
		field := t.Field(i)
		switch field.Type.Kind() {
		case reflect.Ptr:
			if st.Field(i).IsNil() {
				break
			}
			fallthrough
		case reflect.Struct:
			structIntMap(st.Field(i), m, fieldPath(path, field.Name))
		case reflect.Int:
			m[fieldPath(path, field.Name)] = int(st.Field(i).Int())
		}
	}
}