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Name	Size	Permission
Crypto	[ DIR ]	drwxr-xr-x
DependencyInjection	[ DIR ]	drwxr-xr-x
Encoder	[ DIR ]	drwxr-xr-x
Exception	[ DIR ]	drwxr-xr-x
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Test	[ DIR ]	drwxr-xr-x
Address.php	4.58 KB	-rwxr-xr-x
BodyRendererInterface.php	418 B	-rwxr-xr-x
CHANGELOG.md	457 B	-rwxr-xr-x
CharacterStream.php	9.32 KB	-rwxr-xr-x
Email.php	16.61 KB	-rwxr-xr-x
FileBinaryMimeTypeGuesser.php	2.47 KB	-rwxr-xr-x
FileinfoMimeTypeGuesser.php	1.84 KB	-rwxr-xr-x
LICENSE	1.04 KB	-rwxr-xr-x
Message.php	4.61 KB	-rwxr-xr-x
MessageConverter.php	5.35 KB	-rwxr-xr-x
MimeTypeGuesserInterface.php	826 B	-rwxr-xr-x
MimeTypes.php	176.64 KB	-rwxr-xr-x
MimeTypesInterface.php	777 B	-rwxr-xr-x
README.md	459 B	-rwxr-xr-x
RawMessage.php	1.87 KB	-rwxr-xr-x
composer.json	1.51 KB	-rwxr-xr-x

Code Editor : FileBinaryMimeTypeGuesser.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\Mime;

use Symfony\Component\Mime\Exception\InvalidArgumentException;
use Symfony\Component\Mime\Exception\LogicException;

/**
 * Guesses the MIME type with the binary "file" (only available on *nix).
 *
 * @author Bernhard Schussek <bschussek@gmail.com>
 */
class FileBinaryMimeTypeGuesser implements MimeTypeGuesserInterface
{
    private $cmd;

/**
     * The $cmd pattern must contain a "%s" string that will be replaced
     * with the file name to guess.
     *
     * The command output must start with the MIME type of the file.
     *
     * @param string $cmd The command to run to get the MIME type of a file
     */
    public function __construct(string $cmd = 'file -b --mime -- %s 2>/dev/null')
    {
        $this->cmd = $cmd;
    }

/**
     * {@inheritdoc}
     */
    public function isGuesserSupported(): bool
    {
        static $supported = null;

if (null !== $supported) {
            return $supported;
        }

if ('\\' === \DIRECTORY_SEPARATOR || !\function_exists('passthru') || !\function_exists('escapeshellarg')) {
            return $supported = false;
        }

ob_start();
        passthru('command -v file', $exitStatus);
        $binPath = trim(ob_get_clean());

return $supported = 0 === $exitStatus && '' !== $binPath;
    }

/**
     * {@inheritdoc}
     */
    public function guessMimeType(string $path): ?string
    {
        if (!is_file($path) || !is_readable($path)) {
            throw new InvalidArgumentException(sprintf('The "%s" file does not exist or is not readable.', $path));
        }

if (!$this->isGuesserSupported()) {
            throw new LogicException(sprintf('The "%s" guesser is not supported.', __CLASS__));
        }

ob_start();

// need to use --mime instead of -i. see #6641
        passthru(sprintf($this->cmd, escapeshellarg((str_starts_with($path, '-') ? './' : '').$path)), $return);
        if ($return > 0) {
            ob_end_clean();

return null;
        }

$type = trim(ob_get_clean());

if (!preg_match('#^([a-z0-9\-]+/[a-z0-9\-\+\.]+)#i', $type, $match)) {
            // it's not a type, but an error message
            return null;
        }

return $match[1];
    }
}

${this.title}

Code Editor : FileBinaryMimeTypeGuesser.php