tbf/TBF/Rig/TestMethods/GenesisCommunication/GenesisCalibrationFactors.cs

using System;
using System.Globalization;

namespace TBF.Rig.TestMethods.GenesisCommunication
{
    public static class GenesisCalibrationFactors
    {
        // Preserve the special branch default only when no channel has been configured.
        public const ushort DefaultFactor = 15625;

        public static bool TryParse(string text1, string text2, string text3,
            out double[] factors, out string error)
        {
            factors = null;
            error = null;
            var text = new[] { text1, text2, text3 };
            if (Array.TrueForAll(text, string.IsNullOrWhiteSpace))
            {
                factors = new double[] { DefaultFactor, DefaultFactor, DefaultFactor };
                return true;
            }

            var parsed = new double[3];
            for (int channel = 0; channel < parsed.Length; channel++)
            {
                ushort value;
                if (!ushort.TryParse(text[channel]?.Trim(), NumberStyles.None,
                    CultureInfo.InvariantCulture, out value) || value == 0)
                {
                    error = "Genesis calibration Text" + (channel + 1) + " must be an integer from 1 to 65535. Set all three channels.";
                    return false;
                }
                parsed[channel] = value;
            }
            factors = parsed;
            return true;
        }
    }
}