def write(path, contents, fatal=True, logger=None):
    """
    :param str|None path: Path to file
    :param str|None contents: Contents to write
    :param bool|None fatal: Abort execution on failure if True
    :param callable|None logger: Logger to use
    :return int: 1 if effectively done, 0 if no-op, -1 on failure
    """
    if not path:
        return 0

    if is_dryrun():
        action = "write %s bytes to" % len(contents) if contents else "touch"
        LOG.debug("Would %s %s", action, short(path))
        return 1

    ensure_folder(path, fatal=fatal, logger=logger)
    if logger and contents:
        logger("Writing %s bytes to %s", len(contents), short(path))

    try:
        with io.open(path, "wt") as fh:
            if contents:
                fh.write(decode(contents))
            else:
                os.utime(path, None)
        return 1

    except Exception as e:
        return abort("Can't write to %s: %s", short(path), e, fatal=(fatal, -1))