Stringify error messages.

define.go

@@ -128,8 +128,24 @@ const CL_INIT_DEFAULT C.uint = C.CL_INIT_DEFAULT
 
 // Wraps the corresponding error message
 func Strerr(code ErrorCode) error {
-	err := errors.New(fmt.Sprintf("Error %d", C.int(code)))
-	return err
+	switch code {
+	case CL_VIRUS:
+		return errors.New("Virus detected")
+	case CL_EUNPACK:
+		return errors.New("Unpacking failed")
+	case CL_EVERIFY:
+		return errors.New("Verification failed")
+	case CL_ECVD:
+		return errors.New("CVD database error")
+	case CL_EOPEN:
+	case CL_EACCES:
+	case CL_EREAD:
+	case CL_ESTAT:
+		return errors.New("I/O error while scanning file.")
+	default:
+		return errors.New(fmt.Sprintf("Error %d", C.int(code)))
+	}
+	return errors.New("Unknown error")
 }
 
 /* db options */