apewer-dotnet/Apewer.Source/Externals/MySql.Data-6.10.9/MySqlClient/Common/Version.cs

#if MYSQL_6_10

// Copyright ?2004, 2016 Oracle and/or its affiliates. All rights reserved.
//
// MySQL Connector/NET is licensed under the terms of the GPLv2
// <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most 
// MySQL Connectors. There are special exceptions to the terms and 
// conditions of the GPLv2 as it is applied to this software, see the 
// FLOSS License Exception
// <http://www.mysql.com/about/legal/licensing/foss-exception.html>.
//
// This program is free software; you can redistribute it and/or modify 
// it under the terms of the GNU General Public License as published 
// by the Free Software Foundation; version 2 of the License.
//
// This program is distributed in the hope that it will be useful, but 
// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 
// for more details.
//
// You should have received a copy of the GNU General Public License along 
// with this program; if not, write to the Free Software Foundation, Inc., 
// 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA

using System;
using Externals.MySql.Data.MySqlClient;

namespace Externals.MySql.Data.Common
{
    /// <summary>
    /// Summary description for Version.
    /// </summary>
    internal struct DBVersion
    {
        private readonly string _srcString;

        public DBVersion(string s, int major, int minor, int build)
        {
            Major = major;
            Minor = minor;
            Build = build;
            _srcString = s;
            IsEnterprise = s.ToLowerInvariant().Contains("-enterprise-");
        }

        public int Major { get; }

        public int Minor { get; }

        public int Build { get; }

        public bool IsEnterprise
        {
            get; private set;
        }

        public static DBVersion Parse(string versionString)
        {
            int start = 0;
            int index = versionString.IndexOf('.', start);
            if (index == -1)
                throw new MySqlException(Resources.BadVersionFormat);
            string val = versionString.Substring(start, index - start).Trim();
            int major = Convert.ToInt32(val, System.Globalization.NumberFormatInfo.InvariantInfo);

            start = index + 1;
            index = versionString.IndexOf('.', start);
            if (index == -1)
                throw new MySqlException(Resources.BadVersionFormat);
            val = versionString.Substring(start, index - start).Trim();
            int minor = Convert.ToInt32(val, System.Globalization.NumberFormatInfo.InvariantInfo);

            start = index + 1;
            int i = start;
            while (i < versionString.Length && Char.IsDigit(versionString, i))
                i++;
            val = versionString.Substring(start, i - start).Trim();
            int build = Convert.ToInt32(val, System.Globalization.NumberFormatInfo.InvariantInfo);

            return new DBVersion(versionString, major, minor, build);
        }

        public bool isAtLeast(int majorNum, int minorNum, int buildNum)
        {
            if (Major > majorNum) return true;
            if (Major == majorNum && Minor > minorNum) return true;
            if (Major == majorNum && Minor == minorNum && Build >= buildNum) return true;
            return false;
        }

        public override string ToString()
        {
            return _srcString;
        }

    }
}

#endif