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Name	Size	Permission
ExtensionGuesser.php	2.42 KB	-rw-r--r--
ExtensionGuesserInterface.php	669 B	-rw-r--r--
FileBinaryMimeTypeGuesser.php	2.15 KB	-rw-r--r--
FileinfoMimeTypeGuesser.php	1.64 KB	-rw-r--r--
MimeTypeExtensionGuesser.php	35.58 KB	-rw-r--r--
MimeTypeGuesser.php	3.72 KB	-rw-r--r--
MimeTypeGuesserInterface.php	976 B	-rw-r--r--

Code Editor : ExtensionGuesser.php

<?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\MimeType;

/**
 * A singleton mime type to file extension guesser.
 *
 * A default guesser is provided.
 * You can register custom guessers by calling the register()
 * method on the singleton instance:
 *
 *     $guesser = ExtensionGuesser::getInstance();
 *     $guesser->register(new MyCustomExtensionGuesser());
 *
 * The last registered guesser is preferred over previously registered ones.
 */
class ExtensionGuesser implements ExtensionGuesserInterface
{
    /**
     * The singleton instance
     *
     * @var ExtensionGuesser
     */
    private static $instance = null;

/**
     * All registered ExtensionGuesserInterface instances
     *
     * @var array
     */
    protected $guessers = array();

/**
     * Returns the singleton instance
     *
     * @return ExtensionGuesser
     */
    public static function getInstance()
    {
        if (null === self::$instance) {
            self::$instance = new self();
        }

return self::$instance;
    }

/**
     * Registers all natively provided extension guessers
     */
    private function __construct()
    {
        $this->register(new MimeTypeExtensionGuesser());
    }

/**
     * Registers a new extension guesser
     *
     * When guessing, this guesser is preferred over previously registered ones.
     *
     * @param ExtensionGuesserInterface $guesser
     */
    public function register(ExtensionGuesserInterface $guesser)
    {
        array_unshift($this->guessers, $guesser);
    }

/**
     * Tries to guess the extension
     *
     * The mime type is passed to each registered mime type guesser in reverse order
     * of their registration (last registered is queried first). Once a guesser
     * returns a value that is not NULL, this method terminates and returns the
     * value.
     *
     * @param string $mimeType The mime type
     *
     * @return string          The guessed extension or NULL, if none could be guessed
     */
    public function guess($mimeType)
    {
        foreach ($this->guessers as $guesser) {
            if (null !== $extension = $guesser->guess($mimeType)) {
                return $extension;
            }
        }
    }
}

${this.title}

Code Editor : ExtensionGuesser.php