FileExtensionEscapingStrategy.php

<?php


/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace Twig;


/**
 * Default autoescaping strategy based on file names.
 *
 * This strategy sets the HTML as the default autoescaping strategy,
 * but changes it based on the template name.
 *
 * Note that there is no runtime performance impact as the
 * default autoescaping strategy is set at compilation time.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class FileExtensionEscapingStrategy {
    
    /**
     * Guesses the best autoescaping strategy based on the file name.
     *
     * @param string $name The template name
     *
     * @return string|false The escaping strategy name to use or false to disable
     */
    public static function guess(string $name) {
        if (\in_array(substr($name, -1), [
            '/',
            '\\',
        ])) {
            return 'html';
            // return html for directories
        }
        if (str_ends_with($name, '.twig')) {
            $name = substr($name, 0, -5);
        }
        $extension = pathinfo($name, \PATHINFO_EXTENSION);
        switch ($extension) {
            case 'js':
            case 'json':
                return 'js';
            case 'css':
                return 'css';
            case 'txt':
                return false;
            default:
                return 'html';
        }
    }

}