Method triggerManifestScript

/**
 * Executes a custom install script method
 *
 * @param   string  $method  The install method to execute
 *
 * @return  boolean  True on success
 *
 * @since   3.4
 * @throws  \RuntimeException
 */
protected function triggerManifestScript($method)
{
    ob_start();
    ob_implicit_flush(false);
    if ($this->parent->manifestClass && method_exists($this->parent->manifestClass, $method)) {
        switch ($method) {
            // The preflight and postflight take the route as a param
            case 'preflight':
            case 'postflight':
                if ($this->parent->manifestClass->{$method}($this->route, $this) === false) {
                    if ($method !== 'postflight') {
                        // Clean and close the output buffer
                        ob_end_clean();
                        // The script failed, rollback changes
                        throw new \RuntimeException(Text::sprintf('JLIB_INSTALLER_ABORT_INSTALL_CUSTOM_INSTALL_FAILURE', Text::_('JLIB_INSTALLER_' . $this->route)));
                    }
                }
                break;
            // The install, uninstall, and update methods only pass this object as a param
            case 'install':
            case 'uninstall':
            case 'update':
                if ($this->parent->manifestClass->{$method}($this) === false) {
                    if ($method !== 'uninstall') {
                        // Clean and close the output buffer
                        ob_end_clean();
                        // The script failed, rollback changes
                        throw new \RuntimeException(Text::sprintf('JLIB_INSTALLER_ABORT_INSTALL_CUSTOM_INSTALL_FAILURE', Text::_('JLIB_INSTALLER_' . $this->route)));
                    }
                }
                break;
        }
    }
    // Append to the message object
    $this->extensionMessage .= ob_get_clean();
    // If in postflight or uninstall, set the message for display
    if (($method === 'uninstall' || $method === 'postflight') && $this->extensionMessage !== '') {
        $this->parent->set('extension_message', $this->extensionMessage);
    }
    return true;
}