Contao\StyleSheets::updateStyleSheets PHP Метод

    public function updateStyleSheets()
    {
        $objStyleSheets = $this->Database->execute("SELECT * FROM tl_style_sheet");
        $arrStyleSheets = $objStyleSheets->fetchEach('name');
        // Make sure the dcaconfig.php file is loaded
        if (file_exists(TL_ROOT . '/system/config/dcaconfig.php')) {
            @trigger_error('Using the dcaconfig.php file has been deprecated and will no longer work in Contao 5.0. Create one or more DCA files in app/Resources/contao/dca instead.', E_USER_DEPRECATED);
            include TL_ROOT . '/system/config/dcaconfig.php';
        }
        // Delete old style sheets
        foreach (scan(TL_ROOT . '/assets/css', true) as $file) {
            // Skip directories
            if (is_dir(TL_ROOT . '/assets/css/' . $file)) {
                continue;
            }
            // Preserve root files (is this still required now that scripts are in assets/css/scripts?)
            if (is_array(\Config::get('rootFiles')) && in_array($file, \Config::get('rootFiles'))) {
                continue;
            }
            // Do not delete the combined files (see #3605)
            if (preg_match('/^[a-f0-9]{12}\\.css$/', $file)) {
                continue;
            }
            $objFile = new \File('assets/css/' . $file);
            // Delete the old style sheet
            if ($objFile->extension == 'css' && !in_array($objFile->filename, $arrStyleSheets)) {
                $objFile->delete();
            }
        }
        $objStyleSheets->reset();
        // Create the new style sheets
        while ($objStyleSheets->next()) {
            $this->writeStyleSheet($objStyleSheets->row());
            $this->log('Generated style sheet "' . $objStyleSheets->name . '.css"', __METHOD__, TL_CRON);
        }
    }