src/EasyFrameWork/Version.cs

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/* http://www.zkea.net/ 
 * Copyright (c) ZKEASOFT. All rights reserved. 
 * http://www.zkea.net/licenses */

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

namespace Easy
{
    public class Version
    {
        static Regex regex = new Regex(@"^(\d+\.)?(\d+\.)?(\d+\.)?(\d+)$", RegexOptions.Compiled);

        public int Major { get; set; }
        public int Minor { get; set; }
        public int Revision { get; set; }
        public int Build { get; set; }

        public static Version Parse(string version)
        {
            if (!regex.IsMatch(version))
            {
                throw new Exception("Version format is not supported.");
            }
            Version v = new Version();
            string[] versionParts = version.Split('.', StringSplitOptions.RemoveEmptyEntries);
            if (versionParts.Length > 0)
            {
                v.Major = int.Parse(versionParts[0]);
            }
            if (versionParts.Length > 1)
            {
                v.Minor = int.Parse(versionParts[1]);
            }
            if (versionParts.Length > 2)
            {
                v.Revision = int.Parse(versionParts[2]);
            }
            if (versionParts.Length > 3)
            {
                v.Build = int.Parse(versionParts[3]);
            }
            return v;
        }

        public static bool operator ==(Version v1, Version v2)
        {
            if (ReferenceEquals(v1, v2))
            {
                return true;
            }
            if (ReferenceEquals(v1, null))
            {
                return false;
            }
            if (ReferenceEquals(v2, null))