Iso3166.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Xml;
using Waher.Content.Xml;
using Waher.Events;
using Waher.IoTGateway;
using Waher.Script.Abstraction.Elements;
using Waher.Script.Objects;
 
namespace Waher.Service.IoTBroker.Legal.Identity
{
    public static class Iso3166
    {
        private static readonly SortedDictionary<string, string> countryByCode = new SortedDictionary<string, string>(StringComparer.InvariantCultureIgnoreCase);
        private static readonly SortedDictionary<string, string> codeByCountry = new SortedDictionary<string, string>(StringComparer.InvariantCultureIgnoreCase);
 
        internal static void Load()
        {
            try
            {
                if (!string.IsNullOrEmpty(Gateway.AppDataFolder))
                {
                    XmlDocument Doc = XML.LoadFromFile(Path.Combine(Gateway.AppDataFolder, "ISO-3166-1.xml"));
 
                    foreach (XmlNode N in Doc.DocumentElement.ChildNodes)
                    {
                        if (N is XmlElement E && E.LocalName == "Entry")
                        {
                            string Code = XML.Attribute(E, "code");
                            string Country = XML.Attribute(E, "country");
 
                            if (!string.IsNullOrEmpty(Code) && !string.IsNullOrEmpty(Country))
                            {
                                countryByCode[Code] = Country;
                                codeByCountry[Country] = Code;
                            }
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                Log.Exception(ex);
            }
        }
 
        public static string[] Codes
        {
            get
            {
                string[] Result = new string[countryByCode.Count];
                countryByCode.Keys.CopyTo(Result, 0);
                return Result;
            }
        }
 
        public static string[] Countries
        {
            get
            {
                string[] Result = new string[codeByCountry.Count];
                codeByCountry.Keys.CopyTo(Result, 0);
                return Result;
            }
        }
 
        public static Dictionary<string, IElement> GetEntries()
        {
            Dictionary<string, IElement> Result = new Dictionary<string, IElement>();
 
            foreach (KeyValuePair<string, string> P in countryByCode)
                Result[P.Key] = new StringValue(P.Value);
 
            return Result;
        }
 
        public static bool TryGetCountry(string Code, out string Country)
        {
            return countryByCode.TryGetValue(Code, out Country);
        }
 
        public static bool TryGetCode(string Country, out string Code)
        {
            return codeByCountry.TryGetValue(Country, out Code);
        }
    }
}