yii\console\controllers\MessageController::actionExtract PHP Метод

    public function actionExtract($configFile = null)
    {
        $configFileContent = [];
        if ($configFile !== null) {
            $configFile = Yii::getAlias($configFile);
            if (!is_file($configFile)) {
                throw new Exception("The configuration file does not exist: {$configFile}");
            } else {
                $configFileContent = (require $configFile);
            }
        }
        $config = array_merge($this->getOptionValues($this->action->id), $configFileContent, $this->getPassedOptionValues());
        $config['sourcePath'] = Yii::getAlias($config['sourcePath']);
        $config['messagePath'] = Yii::getAlias($config['messagePath']);
        if (!isset($config['sourcePath'], $config['languages'])) {
            throw new Exception('The configuration file must specify "sourcePath" and "languages".');
        }
        if (!is_dir($config['sourcePath'])) {
            throw new Exception("The source path {$config['sourcePath']} is not a valid directory.");
        }
        if (empty($config['format']) || !in_array($config['format'], ['php', 'po', 'pot', 'db'])) {
            throw new Exception('Format should be either "php", "po", "pot" or "db".');
        }
        if (in_array($config['format'], ['php', 'po', 'pot'])) {
            if (!isset($config['messagePath'])) {
                throw new Exception('The configuration file must specify "messagePath".');
            } elseif (!is_dir($config['messagePath'])) {
                throw new Exception("The message path {$config['messagePath']} is not a valid directory.");
            }
        }
        if (empty($config['languages'])) {
            throw new Exception('Languages cannot be empty.');
        }
        $files = FileHelper::findFiles(realpath($config['sourcePath']), $config);
        $messages = [];
        foreach ($files as $file) {
            $messages = array_merge_recursive($messages, $this->extractMessages($file, $config['translator'], $config['ignoreCategories']));
        }
        if (in_array($config['format'], ['php', 'po'])) {
            foreach ($config['languages'] as $language) {
                $dir = $config['messagePath'] . DIRECTORY_SEPARATOR . $language;
                if (!is_dir($dir)) {
                    @mkdir($dir);
                }
                if ($config['format'] === 'po') {
                    $catalog = isset($config['catalog']) ? $config['catalog'] : 'messages';
                    $this->saveMessagesToPO($messages, $dir, $config['overwrite'], $config['removeUnused'], $config['sort'], $catalog, $config['markUnused']);
                } else {
                    $this->saveMessagesToPHP($messages, $dir, $config['overwrite'], $config['removeUnused'], $config['sort'], $config['markUnused']);
                }
            }
        } elseif ($config['format'] === 'db') {
            $db = \Yii::$app->get(isset($config['db']) ? $config['db'] : 'db');
            if (!$db instanceof \yii\db\Connection) {
                throw new Exception('The "db" option must refer to a valid database application component.');
            }
            $sourceMessageTable = isset($config['sourceMessageTable']) ? $config['sourceMessageTable'] : '{{%source_message}}';
            $messageTable = isset($config['messageTable']) ? $config['messageTable'] : '{{%message}}';
            $this->saveMessagesToDb($messages, $db, $sourceMessageTable, $messageTable, $config['removeUnused'], $config['languages'], $config['markUnused']);
        } elseif ($config['format'] === 'pot') {
            $catalog = isset($config['catalog']) ? $config['catalog'] : 'messages';
            $this->saveMessagesToPOT($messages, $config['messagePath'], $catalog);
        }
    }