N98\Magento\Command\System\Setup\CompareVersionsCommand::execute PHP Method

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $this->detectMagento($output);
        if (!$this->initMagento()) {
            return;
        }
        $time = microtime(true);
        $modules = \Mage::getConfig()->getNode('modules');
        $resourceModel = $this->_getResourceSingleton('core/resource', 'Mage_Core_Model_Resource_Resource');
        $setups = \Mage::getConfig()->getNode('global/resources')->children();
        $ignoreDataUpdate = $input->getOption('ignore-data');
        $headers = array('Setup', 'Module', 'DB', 'Data', 'Status');
        if ($ignoreDataUpdate) {
            unset($headers[array_search('Data', $headers)]);
        }
        $hasStatusErrors = false;
        $errorCounter = 0;
        $table = array();
        foreach ($setups as $setupName => $setup) {
            $moduleName = (string) $setup->setup->module;
            $moduleVersion = (string) $modules->{$moduleName}->version;
            $dbVersion = (string) $resourceModel->getDbVersion($setupName);
            if (!$ignoreDataUpdate) {
                $dataVersion = (string) $resourceModel->getDataVersion($setupName);
            }
            $ok = $dbVersion == $moduleVersion;
            if ($ok && !$ignoreDataUpdate) {
                $ok = $dataVersion == $moduleVersion;
            }
            if (!$ok) {
                $errorCounter++;
            }
            $row = array('Setup' => $setupName, 'Module' => $moduleVersion, 'DB' => $dbVersion);
            if (!$ignoreDataUpdate) {
                $row['Data-Version'] = $dataVersion;
            }
            $row['Status'] = $ok ? 'OK' : 'Error';
            if (!$ok) {
                $hasStatusErrors = true;
            }
            $table[] = $row;
        }
        if ($input->getOption('errors-only')) {
            $table = array_filter($table, function ($row) {
                return $row['Status'] === 'Error';
            });
        }
        //if there is no output format
        //highlight the status
        //and show error'd rows at bottom
        if (!$input->getOption('format')) {
            usort($table, function ($a, $b) {
                if ($a['Status'] !== 'OK' && $b['Status'] === 'OK') {
                    return 1;
                }
                if ($a['Status'] === 'OK' && $b['Status'] !== 'OK') {
                    return -1;
                }
                return strcmp($a['Setup'], $b['Setup']);
            });
            array_walk($table, function (&$row) {
                $status = $row['Status'];
                $availableStatus = array('OK' => 'info', 'Error' => 'error');
                $statusString = sprintf('<%s>%s</%s>', $availableStatus[$status], $status, $availableStatus[$status]);
                $row['Status'] = $statusString;
            });
        }
        if ($input->getOption('log-junit')) {
            $this->logJUnit($table, $input->getOption('log-junit'), microtime($time) - $time);
        } else {
            $this->getHelper('table')->setHeaders($headers)->renderByFormat($output, $table, $input->getOption('format'));
            //if no output format specified - output summary line
            if (!$input->getOption('format')) {
                if ($errorCounter > 0) {
                    $this->writeSection($output, sprintf('%s error%s %s found!', $errorCounter, $errorCounter === 1 ? '' : 's', $errorCounter === 1 ? 'was' : 'were'), 'error');
                } else {
                    $this->writeSection($output, 'No setup problems were found.', 'info');
                }
            }
        }
        if ($hasStatusErrors) {
            //Return a non-zero status to indicate there is an error in the setup scripts.
            return 1;
        } else {
            return 0;
        }
    }