// sp_close closes the pointer and sets it to nil
// to ensure it cannot be closed twice.
func sp_close(p *unsafe.Pointer) error {
if nil == *p {
return nil
}
if 0 != C.sp_destroy(*p) {
return sp_error(*p)
}
*p = nil
return nil
}
// Get retrieves the value for the key.
func (db *Database) Get(key []byte) ([]byte, error) {
var vptr unsafe.Pointer
var size C.size_t
e := C.sp_get(db.Pointer, unsafe.Pointer(&key[0]), C.size_t(len(key)), &vptr, (*C.size_t)(&size))
switch int(e) {
case -1:
return nil, db.Error()
case 0:
return nil, ErrNotFound
case 1:
// Continue after the switch
default:
return nil, fmt.Errorf("ERROR: unexpected return value from sp_get: %v", e)
}
value := C.GoBytes(vptr, C.int(size))
C.sp_destroy(vptr)
return value, nil
}