Amazon.S3.Util.AmazonS3Util.ParseAmzRestoreHeader C# (CSharp) Method

        internal static void ParseAmzRestoreHeader(string header, out bool restoreInProgress, out DateTime? restoreExpiration)
        {
            const string ONGOING_REQUEST = "ongoing-request";
            const string EXPIRY_DATE = "expiry-date";

            restoreExpiration = null;
            restoreInProgress = false;

            if (header == null)
                return;

            int pos = header.IndexOf(ONGOING_REQUEST, StringComparison.Ordinal);
            if (pos != -1)
            {
                int startPos = header.IndexOf('"', pos) + 1;
                int endPos = header.IndexOf('"', startPos + 1);

                string value = header.Substring(startPos, endPos - startPos);
                bool parseBool;
                if (Boolean.TryParse(value, out parseBool))
                    restoreInProgress = parseBool;
            }
            pos = header.IndexOf(EXPIRY_DATE, StringComparison.Ordinal);
            if (pos != -1)
            {
                int startPos = header.IndexOf('"', pos) + 1;
                int endPos = header.IndexOf('"', startPos + 1);

                string value = header.Substring(startPos, endPos - startPos);
                DateTime parseDate;
                if (DateTime.TryParseExact(value, Amazon.Util.AWSSDKUtils.RFC822DateFormat, CultureInfo.InvariantCulture, DateTimeStyles.None, out parseDate))
                    restoreExpiration = parseDate;
            }
        }