LdsVersionNumber.cs

using System.Diagnostics.CodeAnalysis;
using System.Text;
using Waher.Security;
 
namespace NeuroAccess.Nfc.TravelDocuments.DataObjects
{
    public class LdsVersionNumber : DataObject
    {
        public LdsVersionNumber()
            : base([])
        {
        }
 
        public LdsVersionNumber(byte[] Value, int MajorVersion, int MinorVersion)
            : base(Value)
        {
            this.MajorVersion = MajorVersion;
            this.MinorVersion = MinorVersion;
        }
 
        public override ushort Tag => 0x5f01;
 
        public int MajorVersion { get; }
 
        public int MinorVersion { get; }
 
        public override bool TryParse(byte[] Value, TravelDocumentsClient Client,
            [NotNullWhen(true)] out IDataObject? Parsed)
        {
            if (Value.Length == 4)
            {
                string MajorVersion = TrimLeadingZeroes(Encoding.ASCII.GetString(Value, 0, 2));
                string MinorVersion = TrimLeadingZeroes(Encoding.ASCII.GetString(Value, 2, 2));
 
                Client.Information("LDS version: " + MajorVersion + "." + MinorVersion);
 
                if (int.TryParse(MajorVersion, out int MajorVersionInt) &&
                    int.TryParse(MinorVersion, out int MinorVersionInt))
                {
                    Parsed = new LdsVersionNumber(Value, MajorVersionInt, MinorVersionInt);
                    return true;
                }
            }
            else
                Client.Warning("LDS version: " + Hashes.BinaryToString(Value));
 
            Parsed = null;
            return false;
        }
    }
}