in server/src/main/scala/com/twitter/server/handler/ResourceHandler.scala [25:36]
def this(basePath: String, servingDir: String = "www") =
this(basePath, ResourceHandler.jarResolver(servingDir))
private[this] def meta(path: String): (Charset, String) = {
val exts = path.split('.')
val ext = if (exts.nonEmpty) exts.last else ""
ext match {
case "js" => (StandardCharsets.UTF_8, s"application/javascript;charset=UTF-8")
case "css" => (StandardCharsets.UTF_8, s"text/css;charset=UTF-8")
case _ => (StandardCharsets.ISO_8859_1, s"application/octet-stream")
}
}