namespace PluginCore.Utilities

{

/// <summary>

/// Represents a semantic version, see http://semver.org/

/// </summary>

public class SemVer

{

public static readonly SemVer Zero = new SemVer();

public readonly int Major;

public readonly int Minor;

public readonly int Patch;

private SemVer()

{

}

public SemVer(string version)

{

// ignore the pre-release denotation if present

int hyphenIndex = version.IndexOf('-');

if (hyphenIndex >= 0)

version = version.Substring(0, hyphenIndex);

string[] numbers = version.Split('.');

if (numbers.Length >= 1)

int.TryParse(numbers[0], out Major);

if (numbers.Length >= 2)

int.TryParse(numbers[1], out Minor);

if (numbers.Length >= 3)

int.TryParse(numbers[2], out Patch);

}

public override string ToString()

{

return string.Format("{0}.{1}.{2}", Major, Minor, Patch);

}

public bool IsOlderThan(SemVer semVer)

{

if (semVer.Major > Major)

return true;

if (semVer.Major == Major && semVer.Minor > Minor)

return true;

if (semVer.Major == Major && semVer.Minor == Minor && semVer.Patch > Patch)

return true;

return false;

}

}

}