> +/**
> + * Converts ETag header values to byte arrays.
> + *
> + * @author Francis Devereux
> + */
> +public class ETagUtils {
> + public static byte[] convertETagToHash(String eTag) {
> + eTag = unquote(eTag);
> + return base16().lowerCase().decode(eTag);
> + }
> +
> + static String unquote(String eTag) {
> + if (eTag.length() >= 2 &&
> + eTag.startsWith("\"") && eTag.endsWith("\"")) {
> + eTag = eTag.substring(1, eTag.length() - 1);
> + }
Can you do this using Splitter or a regex? Also, you're testing for len > 2 -
any need for that? Is a single `"` a valid input?
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