/**
* Assigns an error name and message to a DBusError. Does nothing if
* error is #NULL. The message may be #NULL, which means a default
* message will be deduced from the name. The default message will be
* totally useless, though, so using a #NULL message is not recommended.
*
* Because this function does not copy the error name or message, you
* must ensure the name and message are global data that won't be
* freed. You probably want dbus_set_error() instead, in most cases.
*
* @param error the error or #NULL
* @param name the error name (not copied!!!)
* @param message the error message (not copied!!!)
*/
void
dbus_set_error_const (DBusError *error,
const char *name,
const char *message)
{
DBusRealError *real;
_dbus_return_if_error_is_set (error);
_dbus_return_if_fail (name != NULL);
if (error == NULL)
return;
_dbus_assert (error->name == NULL);
_dbus_assert (error->message == NULL);
if (message == NULL)
message = message_from_error (name);
real = (DBusRealError *)error;
real->name = (char*) name;
real->message = (char *)message;
real->const_message = TRUE;
}
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);
}
