using System;

using Microsoft.SharePoint;
using Microsoft.SharePoint.Administration;

namespace EnumFeatureDefs
{
    class Program
    {
        private static readonly Guid excelServerSolutionId =
            new Guid("{7ed6cd55-b479-4eb7-a529-e99a24c10bd3}");

        static void Main(            
            string[] args)
        {
            Uri url = new Uri("http://foobar/sites/TfsLite");            

            SPWebApplication webApp = SPWebApplication.Lookup(url);

            EnumerateFeatureDefinitions(webApp.Farm.FeatureDefinitions,
                webApp.Farm.Solutions);
        }

        private static void EnumerateFeatureDefinitions(
            SPFeatureDefinitionCollection featureDefs,
            SPSolutionCollection solutions)
        {
            Console.WriteLine("{0}\t{1}\t{2}\t{3}",
                "Feature Id",
                "Display Name",
                "Scope",
                "Solution");

            foreach (SPFeatureDefinition featureDef in featureDefs)
            {
                string solutionName = string.Empty;

                if (featureDef.SolutionId != Guid.Empty)
                {
                    if (featureDef.SolutionId.Equals(excelServerSolutionId))
                    {
                        solutionName = "Microsoft.Office.Excel.Server";
                    }
                    else
                    {
                        SPSolution solution = solutions[featureDef.SolutionId];

                        if (solution == null)
                        {
                            // Similar to Microsoft.Office.Excel.Server,
                            // the solution is marked Hidden="TRUE" and
                            // therefore does not appear in the list of
                            // solutions for the farm.
                            solutionName = "(Hidden)";
                        }
                        else
                        {
                            solutionName = solution.DisplayName;
                        }
                    }
                }

                Console.WriteLine("{0}\t{1}\t{2}\t{3}",
                    featureDef.Id,
                    featureDef.DisplayName,
                    featureDef.Scope,
                    solutionName);
            }
        }
    }
}