CacheTool\Command\SelfUpdateCommand::execute PHP Method

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $manifest = Manifest::loadFile(self::MANIFEST_FILE);
        $currentVersion = Parser::toVersion($this->getApplication()->getVersion());
        $update = $manifest->findRecent($currentVersion, true);
        if (false === $update instanceof Update) {
            $output->writeln(sprintf('You are already using the latest version: <info>%s</info>', $currentVersion));
            return 0;
        }
        $output->writeln(sprintf('Updating to version <info>%s</info>', $update->getVersion()));
        $manager = new Manager($manifest);
        $manager->update($this->getApplication()->getVersion(), true);
        $output->writeln(sprintf('SHA1 verified <info>%s</info>', $update->getSha1()));
    }