Implement Interface by T4 Text Template Transformation

EsbFixer.tt

<#@ template debug="false" hostspecific="true" language="C#" #>
<#@ assembly name="System.Core" #>
<#@ assembly name="EnvDTE" #>
<#@ assembly name="EnvDTE80" #>
<#@ import namespace="System.Linq" #>
<#@ import namespace="System.Text" #>
<#@ import namespace="System.Collections.Generic" #>
<#@ import namespace="EnvDTE" #>
<#@ import namespace="EnvDTE80" #>
<#@ output extension=".cs" #>
<#
    IServiceProvider serviceProvider = (IServiceProvider)this.Host;
    EnvDTE.DTE dte = serviceProvider.GetService(typeof(EnvDTE.DTE)) as EnvDTE.DTE;

    Array projects = dte.ActiveSolutionProjects as Array;
    EnvDTE.Project p = projects.GetValue(0) as EnvDTE.Project;
    
    EnvDTE.CodeElement cmIntegration = p.CodeModel.CodeElements.OfType<EnvDTE.CodeElement>().Single(f => f.Name == "Integration");
    
    IEnumerable<CodeClass> classes = FindClasses(p.CodeModel.CodeElements, "NapakaSporocilo", "KodaInSporocilo");
    IEnumerable<IGrouping<string, CodeClass>> classesByNamespace = classes.GroupBy(f => f.Namespace.Name);
    foreach (IGrouping<string, CodeClass> nsGroup in classesByNamespace)
    {
#>
//------------------------------------------------------------------------------
// <auto-generated>
//     This code was generated from a template.
//
//     Manual changes to this file may cause unexpected behavior in your application.
//     Manual changes to this file will be overwritten if the code is regenerated.
// </auto-generated>
//------------------------------------------------------------------------------

namespace <#= nsGroup.Key #>
{<#
        foreach (CodeClass cc in nsGroup)
        {
            switch (cc.Name)
            {
                case "NapakaSporocilo":
    #>    
    partial class <#= cc.Name #> : INapakaSporocilo
    {
        public IKodaInSporocilo[] INapake
        {
            get { return Napake; }
        }
    }
    <#
                    break;

                case "KodaInSporocilo":
    #>    
    partial class <#= cc.Name #> : IKodaInSporocilo
    {
    }
    <#
                    break;
            }
        }
    #>    
}
<#
    }
#>
<#+
    private IEnumerable<CodeClass> FindClasses(CodeElements elements, params string[] classNames)
    {
        foreach (CodeElement element in elements)
        {
            //WriteLine("{0}, {1} {2}",element.FullName, element.Kind, element is CodeClass);
            if (!element.FullName.StartsWith("Integration"))
            {
                continue;
            }

            if(element is CodeClass)
            {
                CodeClass c = element as CodeClass;
                if (c != null)
                {
                    //WriteLine("ž1{0}, {1} {2}", c.FullName, c.Access, element is CodeClass2);
                    if (Array.IndexOf(classNames, c.Name) >= 0)
                    {
                        yield return c;
                    }

                    foreach (var cc in FindClasses(c.Members, classNames))
                    {
                        yield return cc;
                    }
                }
            }

            if (element is CodeNamespace)
            {
                CodeNamespace ns = element as CodeNamespace;
                if (ns != null)
                {
                    foreach (var cc in FindClasses(ns.Members, classNames))
                    {
                        yield return cc;
                    }
                }
            }
        }

        yield break;
    }
#>