def path_empty(
    src: Sized, msg: str, quiet: bool, verbose: bool, ctx: click.Context
) -> None:
    """
    Exit if there is no `src` provided for formatting
    """
    if not src:
        if verbose or not quiet:
            out(msg)
        ctx.exit(0)

    Exit if there is no `src` provided for formatting
    
src/black/__init__.py