Sanya-ips/ipslib/Ips.Library.Entity/Geos/GeoLineGroup.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Ips.Library.Entity
{
    public class GeoLineGroup
    {
        public GeoLineGroup() { }

        public GeoLineGroup(string name)
        {
            this.Name = name;
        }

        public string Name { get; set; }

        public List<GeoLine> Lines { get; set; } = new List<GeoLine>();

        public static List<GeoLineGroup> FromListString(string source)
        {
            var results = new List<GeoLineGroup>();

            if (string.IsNullOrWhiteSpace(source))
                return results;

            using var reader = new StringReader(source);
            string line = string.Empty;
            GeoLineGroup result = null;
            while ((line = reader.ReadLine()) != null)
            {
                bool isBegin = line.StartsWith("key:");
                if (isBegin)
                {
                    var newItem = new GeoLineGroup(line.Substring(4));
                    results.Add(newItem);
                    result = newItem;
                }
                else
                {
                    if (result != null)
                    {
                        result.Lines.Add(GeoLine.FromString(line));
                    }
                }
            }
            return results;
        }
    }
}