package bluray

/*
#include <stdint.h>
*/
import "C"
import "unsafe"

func cStringToGoString(cStr *C.char) *string {
	if cStr == nil {
		return nil
	}
	str := C.GoString(cStr)
	return &str
}

func getLanguageCode(langField [4]C.uint8_t) string {
	isEmpty := true
	for _, b := range langField {
		if b != 0 {
			isEmpty = false
			break
		}
	}
	if isEmpty {
		return "und"
	}
	return C.GoStringN((*C.char)(unsafe.Pointer(&langField[0])), 3)
}