vendor/symfony/http-foundation/File/File.php

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<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\HttpFoundation\File;

use Symfony\Component\HttpFoundation\File\Exception\FileException;
use Symfony\Component\HttpFoundation\File\Exception\FileNotFoundException;
use Symfony\Component\Mime\MimeTypes;

/**
 * A file in the file system.
 *
 * @author Bernhard Schussek <bschussek@gmail.com>
 */
class File extends \SplFileInfo
{
    /**
     * Constructs a new file from the given path.
     *
     * @param string $path      The path to the file
     * @param bool   $checkPath Whether to check the path or not
     *
     * @throws FileNotFoundException If the given path is not a file
     */
    public function __construct(string $path, bool $checkPath = true)
    {
        if ($checkPath && !is_file($path)) {
            throw new FileNotFoundException($path);
        }

        parent::__construct($path);
    }

    /**
     * Returns the extension based on the mime type.
     *
     * If the mime type is unknown, returns null.
     *
     * This method uses the mime type as guessed by getMimeType()
     * to guess the file extension.
     *
     * @return string|null
     *
     * @see MimeTypes
     * @see getMimeType()
     */
    public function guessExtension()
    {
        if (!class_exists(MimeTypes::class)) {
            throw new \LogicException('You cannot guess the extension as the Mime component is not installed. Try running "composer require symfony/mime".');
        }