You could use reflection to inspect the struct and print any []byte
s that it has.
package main
import (
"fmt"
"reflect"
)
type SomeStruct struct {
field1 []byte
field2 []byte
}
type OtherStruct struct {
intValue int
intSlice []int
byteSlice []byte
}
var typeOfBytes = reflect.TypeOf([]byte(nil))
func printSlicesHex(obj interface{}) {
value := reflect.ValueOf(obj)
typeOfObj := value.Type()
for i := 0; i < value.NumField(); i++ {
field := value.Field(i)
if field.Type() == typeOfBytes {
bytes := field.Bytes()
printBytes(typeOfObj.Field(i).Name, bytes)
}
}
}
func printBytes(name string, bytes []byte) {
fmt.Printf("%s: [% x]
", name, bytes)
}
func main() {
someStructInstance := SomeStruct{[]byte{249, 190, 180, 217}, []byte{29, 1, 0, 0}}
fmt.Println("Printing []bytes in SomeStruct")
printSlicesHex(someStructInstance)
fmt.Println()
otherStruct := OtherStruct{0, []int{0, 1, 2}, []byte{0, 1, 2, 3}}
fmt.Println("Printing []bytes in OtherStruct")
printSlicesHex(otherStruct)
}
For each []byte
, this example prints the name of the field and its data (in hex). You could improve on this by taking a custom function to do the printing, so you don't always have to print in hex.
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