using System;

using System.Linq;

using System.Reflection;

using System.Text.RegularExpressions;

namespace SPCode.Utils

{

public static class VersionHelper

{

public static Version GetAssemblyVersion()

{

return Assembly.GetEntryAssembly()?.GetName().Version;

}

public static string GetAssemblyInformationalVersion()

{

return ((AssemblyInformationalVersionAttribute)Assembly.GetExecutingAssembly()

.GetCustomAttributes(typeof(AssemblyInformationalVersionAttribute), false)

.FirstOrDefault()).InformationalVersion;

}

public static int GetRevisionNumber()

{

var revRegex = new Regex("(?<=beta)[0-9]*");

var attribute = (AssemblyInformationalVersionAttribute)Assembly.GetExecutingAssembly()

.GetCustomAttributes(typeof(AssemblyInformationalVersionAttribute), false).FirstOrDefault();

if (!revRegex.IsMatch(attribute.InformationalVersion))

{

throw new Exception("No match found for specified informational version.");

}

return int.Parse(revRegex.Match(attribute.InformationalVersion).ToString());

}

public static int GetRevisionNumber(string informationalVersion)

{

var revRegex = new Regex("(?<=beta)[0-9]*");

if (!revRegex.IsMatch(informationalVersion))

{

throw new Exception("No match found for specified informational version.");

}

return int.Parse(revRegex.Match(informationalVersion).ToString());

}

}

}