class FileBinaryMimeTypeGuesser in Zircon Profile 8

Guesses the mime type with the binary "file" (only available on *nix).

@author Bernhard Schussek <[e-mail]>

Hierarchy

• class \Symfony\Component\HttpFoundation\File\MimeType\FileBinaryMimeTypeGuesser implements MimeTypeGuesserInterface

1 file declares its use of FileBinaryMimeTypeGuesser

MimeTypeTest.php in vendor/symfony/http-foundation/Tests/File/MimeType/MimeTypeTest.php

File

vendor/symfony/http-foundation/File/MimeType/FileBinaryMimeTypeGuesser.php, line 22

Namespace

Symfony\Component\HttpFoundation\File\MimeType

class FileBinaryMimeTypeGuesser implements MimeTypeGuesserInterface {
  private $cmd;

  /**
   * Constructor.
   *
   * 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 $cmd The command to run to get the mime type of a file
   */
  public function __construct($cmd = 'file -b --mime %s 2>/dev/null') {
    $this->cmd = $cmd;
  }

  /**
   * Returns whether this guesser is supported on the current OS.
   *
   * @return bool
   */
  public static function isSupported() {
    return '\\' !== DIRECTORY_SEPARATOR && function_exists('passthru') && function_exists('escapeshellarg');
  }

  /**
   * {@inheritdoc}
   */
  public function guess($path) {
    if (!is_file($path)) {
      throw new FileNotFoundException($path);
    }
    if (!is_readable($path)) {
      throw new AccessDeniedException($path);
    }
    if (!self::isSupported()) {
      return;
    }
    ob_start();

    // need to use --mime instead of -i. see #6641
    passthru(sprintf($this->cmd, escapeshellarg($path)), $return);
    if ($return > 0) {
      ob_end_clean();
      return;
    }
    $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;
    }
    return $match[1];
  }

}

Members

Name	Modifiers	Type	Description	Overrides
FileBinaryMimeTypeGuesser::$cmd	private	property
FileBinaryMimeTypeGuesser::guess	public	function	Guesses the mime type of the file with the given path. Overrides MimeTypeGuesserInterface::guess
FileBinaryMimeTypeGuesser::isSupported	public static	function	Returns whether this guesser is supported on the current OS.
FileBinaryMimeTypeGuesser::__construct	public	function	Constructor.