ircsharp/IrcTokens/Hostmask.cs

using System;

namespace IrcTokens
{
    /// <summary>
    /// Represents the three parts of a hostmask. Parse with the constructor.
    /// </summary>
    public class Hostmask
    {
        public string NickName { get; set; }
        public string UserName { get; set; }
        public string HostName { get; set; }

        public override string ToString() => _source;

        public override int GetHashCode() => _source.GetHashCode(StringComparison.Ordinal);

        public override bool Equals(object obj)
        {
            if (obj == null || GetType() != obj.GetType())
                return false;

            return _source == ((Hostmask) obj)._source;
        }

        private readonly string _source;

        public Hostmask(string source)
        {
            if (source == null) return;

            _source = source;

            if (source.Contains('@', StringComparison.Ordinal))
            {
                var split = source.Split('@');

                NickName = split[0];
                HostName = split[1];
            }
            else
            {
                NickName = source;
            }

            if (NickName.Contains('!', StringComparison.Ordinal))
            {
                var userSplit = NickName.Split('!');
                NickName = userSplit[0];
                UserName = userSplit[1];
            }
        }
    }
}