title: How to convert an Iterator[String] to Reader[String]?
body: <p>I'm trying to parse a file line-by-line using parser combinators. It's clear for me how to write the parsers themselves, but when to run them I have to provide an <code>Input</code> = <code>Reader[String]</code>. Given that I have an <code>Iterator[String]</code> reading the file (or a <code>Source</code>), what is the best way to run it through parsers?</p>