void _dbus_set_error_valist (DBusError *error, const char *name, const char *format, va_list args) { DBusRealError *real; DBusString str; _dbus_assert (name != NULL); if (error == NULL) return; _dbus_assert (error->name == NULL); _dbus_assert (error->message == NULL); if (!_dbus_string_init (&str)) goto nomem; if (format == NULL) { if (!_dbus_string_append (&str, message_from_error (name))) { _dbus_string_free (&str); goto nomem; } } else { if (!_dbus_string_append_printf_valist (&str, format, args)) { _dbus_string_free (&str); goto nomem; } } real = (DBusRealError *)error; if (!_dbus_string_steal_data (&str, &real->message)) { _dbus_string_free (&str); goto nomem; } _dbus_string_free (&str); real->name = _dbus_strdup (name); if (real->name == NULL) { dbus_free (real->message); real->message = NULL; goto nomem; } real->const_message = FALSE; return; nomem: _DBUS_SET_OOM (error); }
/** * Assigns an error name and message to a DBusError. * Does nothing if error is #NULL. * * The format may be #NULL, which means a (pretty much useless) * default message will be deduced from the name. This is not a good * idea, just go ahead and provide a useful error message. It won't * hurt you. * * If no memory can be allocated for the error message, * an out-of-memory error message will be set instead. * * @param error the error.or #NULL * @param name the error name * @param format printf-style format string. */ void dbus_set_error (DBusError *error, const char *name, const char *format, ...) { DBusRealError *real; DBusString str; va_list args; if (error == NULL) return; /* it's a bug to pile up errors */ _dbus_return_if_error_is_set (error); _dbus_return_if_fail (name != NULL); _dbus_assert (error->name == NULL); _dbus_assert (error->message == NULL); if (!_dbus_string_init (&str)) goto nomem; if (format == NULL) { if (!_dbus_string_append (&str, message_from_error (name))) { _dbus_string_free (&str); goto nomem; } } else { va_start (args, format); if (!_dbus_string_append_printf_valist (&str, format, args)) { _dbus_string_free (&str); va_end (args); goto nomem; } va_end (args); } real = (DBusRealError *)error; if (!_dbus_string_steal_data (&str, &real->message)) { _dbus_string_free (&str); goto nomem; } _dbus_string_free (&str); real->name = _dbus_strdup (name); if (real->name == NULL) { dbus_free (real->message); real->message = NULL; goto nomem; } real->const_message = FALSE; return; nomem: _DBUS_SET_OOM (error); }