private function readEntry(array &$entries)
{
if (!count($entries)) {
$offset = 0;
} else {
$last = end($entries);
$offset = $last["offset"] + $last["csize"];
}
$file = $this->readStringBinary($this->fd);
if (!strlen($file)) {
throw new Exception("Empty file name encountered at offset '{$offset}'");
}
$header = $this->readFormat("Vosize/Vstamp/Vcsize/Vcrc32/Vflags", $this->fd, 20);
$meta = $this->readSerializedBinary($this->fd);
$entries[$file] = $header + compact("meta", "offset");
}