System.Data.SQLite

    internal delegate bool FrameworkConfigCallback(
        string fileName,           /* in */
        string invariant,          /* in */
        string name,               /* in */
        string description,        /* in */
        string typeName,           /* in */
        AssemblyName assemblyName, /* in */
        string directory,          /* in */
        object clientData,         /* in */
        bool perUser,              /* in */
        bool wow64,                /* in */
        bool throwOnMissing,       /* in */
        bool whatIf,               /* in */
        bool verbose,              /* in */
        ref bool saved,            /* out */
        ref string error           /* out */
    );

    ///////////////////////////////////////////////////////////////////////////

    internal delegate bool FrameworkRegistryCallback(
        Installer.MockRegistryKey rootKey, /* in */
        string frameworkName,              /* in */
        Version frameworkVersion,          /* in */
        string platformName,               /* in */
        string directory,                  /* in */
        object clientData,                 /* in */
        bool perUser,                      /* in */
        bool wow64,                        /* in */
        bool throwOnMissing,               /* in */
        bool whatIf,                       /* in */
        bool verbose,                      /* in */
        ref string error                   /* out */
    );

    ///////////////////////////////////////////////////////////////////////////

    internal delegate bool VisualStudioRegistryCallback(
        Installer.MockRegistryKey rootKey, /* in */
        Version vsVersion,                 /* in */
        string suffix,                     /* in, optional */
        Installer.Package package,         /* in */
        string directory,                  /* in */
        object clientData,                 /* in */
        bool perUser,                      /* in */
        bool wow64,                        /* in */
        bool throwOnMissing,               /* in */
        bool whatIf,                       /* in */
        bool verbose,                      /* in */
        ref string error                   /* out */

        GlobalAssemblyCache = 0x1,
        AssemblyFolders = 0x2,
        DbProviderFactory = 0x4,
        VsPackage = 0x8,
        VsPackageGlobalAssemblyCache = 0x10,
        VsDataSource = 0x20,
        VsDataProvider = 0x40,
        VsDevEnvSetup = 0x80,
        #endregion

        ///////////////////////////////////////////////////////////////////////

        #region Composite Flags
        Framework = GlobalAssemblyCache | AssemblyFolders |
                    DbProviderFactory,

        ///////////////////////////////////////////////////////////////////////

        Vs = VsPackage | VsPackageGlobalAssemblyCache | VsDataSource |
             VsDataProvider | VsDevEnvSetup,

        ///////////////////////////////////////////////////////////////////////

        All = Framework | Vs,

        ///////////////////////////////////////////////////////////////////////

        ///////////////////////////////////////////////////////////////////////

        private const string NameAndValueFormat = "{0}: {1}";
        private const string LogFileSuffix = ".log";

        ///////////////////////////////////////////////////////////////////////

        private const string VsDevEnvSetupFormat = "{0}: {1}";

        ///////////////////////////////////////////////////////////////////////

        private const string RootKeyName = "Software";
        private const string Wow64SubKeyName = "Wow6432Node";

        ///////////////////////////////////////////////////////////////////////

        //
        // NOTE: The .NET Framework has both 32-bit and 64-bit editions.

            MockRegistryKey rootKey,
            string frameworkName,
            Version frameworkVersion,
            string platformName,
            bool perUser,
            bool wow64,
            bool whatIf,
            bool verbose,
            ref string installDirectory
            )
        {
            string keyName = GetFrameworkKeyName(
                frameworkName, frameworkVersion, platformName, perUser,
                wow64);

            using (MockRegistryKey key = RegistryHelper.OpenSubKey(

                TraceOps.DebugAndTrace(TracePriority.Lower,
                    debugCallback, traceCallback, String.Format(
                    ".NET Framework {0} found via directory {1}.",
                    ForDisplay(frameworkVersion), ForDisplay(directory)),
                    traceCategory);

                installDirectory = directory;
                return true;
            }
        }

        ///////////////////////////////////////////////////////////////////////

        private static bool HaveFrameworkRegistry(

                    TraceOps.DebugAndTrace(TracePriority.Lower,
                        debugCallback, traceCallback, String.Format(
                        "frameworkName = {0}, frameworkVersion = {1}, " +
                        "platformName = {2}", ForDisplay(frameworkName),
                        ForDisplay(frameworkVersion),
                        ForDisplay(platformName)), traceCategory);

                    string installDirectory = null;

                    if (!HaveFrameworkDirectory(
                            rootKey, frameworkName, frameworkVersion,
                            platformName, perUser, wow64, whatIf, verbose,
                            ref installDirectory))
                    {
                        TraceOps.DebugAndTrace(TracePriority.Low,
                            debugCallback, traceCallback, String.Format(
                            ".NET Framework {0} directory not found, " +
                            "skipping...", ForDisplay(frameworkVersion)),
                            traceCategory);

                        continue;
                    }

                    if (callback == null)
                        continue;

                    string directory = installDirectory;



                    if (String.IsNullOrEmpty(directory))
                    {
                        TraceOps.DebugAndTrace(TracePriority.Low,
                            debugCallback, traceCallback, String.Format(
                            ".NET Framework {0} directory is invalid, " +
                            "skipping...", ForDisplay(frameworkVersion)),

                        continue;
                    }

                    bool localSaved = false;

                    if (!callback(
                            fileName, invariant, name, description, typeName,
                            assemblyName, installDirectory, clientData,
                            perUser, wow64, throwOnMissing, whatIf, verbose,
                            ref localSaved, ref error))
                    {
                        return false;
                    }
                    else
                    {
                        if (localSaved && !saved)
                            saved = true;

                    }

                    if (callback == null)
                        continue;

                    if (!callback(
                            rootKey, frameworkName, frameworkVersion,
                            platformName, null, clientData, perUser,
                            wow64, throwOnMissing, whatIf, verbose,
                            ref error))
                    {
                        return false;
                    }
                }
            }

            return true;

                if ((configuration == null) || !configuration.NoVs2013)
                    vsList.Versions.Add(new Version(12, 0));// 2013
            }
        }

        ///////////////////////////////////////////////////////////////////////

        private static bool HaveVsVersionDirectory(
            MockRegistryKey rootKey,
            Version vsVersion,
            string suffix,
            bool perUser,
            bool wow64,
            bool whatIf,
            bool verbose,
            ref string installDirectory
            )
        {
            if (vsVersion == null)
                return false;

            string keyName = GetVsKeyName(vsVersion, suffix, perUser, wow64);

                TraceOps.DebugAndTrace(TracePriority.Lower,
                    debugCallback, traceCallback, String.Format(
                    "Visual Studio {0} found in directory {1}.",
                    ForDisplay(vsVersion), ForDisplay(directory)),
                    traceCategory);

                installDirectory = directory;
                return true;
            }
        }

        ///////////////////////////////////////////////////////////////////////

        [MethodImpl(MethodImplOptions.NoInlining)]

            foreach (Version vsVersion in vsList.Versions)
            {
                TraceOps.DebugAndTrace(TracePriority.Lower,
                    debugCallback, traceCallback, String.Format(
                    "vsVersion = {0}", ForDisplay(vsVersion)),
                    traceCategory);

                string installDirectory = null;

                if (!HaveVsVersionDirectory(
                        rootKey, vsVersion, suffix, perUser, wow64, whatIf,
                        verbose, ref installDirectory))
                {
                    TraceOps.DebugAndTrace(TracePriority.Low,
                        debugCallback, traceCallback, String.Format(
                        "Visual Studio {0} not found, skipping...",
                        ForDisplay(vsVersion)), traceCategory);

                    continue;
                }

                if (callback == null)
                    continue;

                if (!callback(
                        rootKey, vsVersion, suffix, package, installDirectory,
                        clientData, perUser, wow64, throwOnMissing, whatIf,
                        verbose, ref error))
                {
                    return false;
                }
            }

            return true;
        }

        private static bool ProcessDbProviderFactory(
            string fileName,
            string invariant,
            string name,
            string description,
            string typeName,
            AssemblyName assemblyName,
            string directory,
            object clientData,
            bool perUser,
            bool wow64,
            bool throwOnMissing,
            bool whatIf,
            bool verbose,
            ref bool saved,

        ///////////////////////////////////////////////////////////////////////

        private static bool ProcessAssemblyFolders(
            MockRegistryKey rootKey,
            string frameworkName,
            Version frameworkVersion,
            string platformName,
            string directory,
            object clientData,
            bool perUser,
            bool wow64,
            bool throwOnMissing,
            bool whatIf,
            bool verbose,
            ref string error

        ///////////////////////////////////////////////////////////////////////

        private static bool ProcessVsDataSource(
            MockRegistryKey rootKey,
            Version vsVersion,
            string suffix,
            Package package,
            string directory,
            object clientData,
            bool perUser,
            bool wow64,
            bool throwOnMissing,
            bool whatIf,
            bool verbose,
            ref string error

        ///////////////////////////////////////////////////////////////////////

        private static bool ProcessVsDataProvider(
            MockRegistryKey rootKey,
            Version vsVersion,
            string suffix,
            Package package,
            string directory,
            object clientData,
            bool perUser,
            bool wow64,
            bool throwOnMissing,
            bool whatIf,
            bool verbose,
            ref string error

        ///////////////////////////////////////////////////////////////////////

        private static bool ProcessVsPackage(
            MockRegistryKey rootKey,
            Version vsVersion,
            string suffix,
            Package package,
            string directory,
            object clientData,
            bool perUser,
            bool wow64,
            bool throwOnMissing,
            bool whatIf,
            bool verbose,
            ref string error

            }
            else
            {
                return RemoveVsPackage(
                    rootKey, vsVersion, suffix, package, perUser, wow64,
                    throwOnMissing, whatIf, verbose, ref error);
            }
        }
        #endregion

        ///////////////////////////////////////////////////////////////////////

        #region Visual Studio Setup Handling
        private static void VsDevEnvSetupOutputDataReceived(
            object sender,
            DataReceivedEventArgs e
            )
        {
            Process process = sender as Process;

            TraceOps.DebugAndTrace(TracePriority.Medium,
                debugCallback, traceCallback, String.Format(
                VsDevEnvSetupFormat, process.Id, e.Data),
                traceCategory);
        }

        ///////////////////////////////////////////////////////////////////////

        private static void VsDevEnvSetupErrorDataReceived(
            object sender,
            DataReceivedEventArgs e
            )
        {
            Process process = sender as Process;

            TraceOps.DebugAndTrace(TracePriority.Medium,
                debugCallback, traceCallback, String.Format(
                VsDevEnvSetupFormat, process.Id, e.Data),
                traceCategory);
        }

        ///////////////////////////////////////////////////////////////////////

        private static bool AddVsDevEnvSetup(
            Version vsVersion,
            string directory,
            bool perUser,
            bool whatIf,
            bool verbose,
            ref string error
            )
        {
            if (perUser)
            {
                //
                // NOTE: Visual Studio does not support running in 'setup'
                //       mode on a per-user basis; therefore, skip running
                //       it in that case.
                //
                TraceOps.DebugAndTrace(TracePriority.Higher,
                    debugCallback, traceCallback, String.Format(
                    "Visual Studio {0} 'setup' mode is per-machine only, " +
                    "skipping...", ForDisplay(vsVersion)), traceCategory);

                return true;
            }

            ProcessStartInfo startInfo = new ProcessStartInfo();

            //
            // NOTE: Set the core properties for the process to start.  In this
            //       case, we are starting the primary Visual Studio executable
            //       (devenv.exe) in "setup" mode, so that it can refresh its
            //       list of installed packages and their associated resources.
            //
            startInfo.FileName = Path.Combine(directory, "devenv.exe");
            startInfo.Arguments = "/setup";
            startInfo.WorkingDirectory = directory;

            //
            // NOTE: Set the boolean flag properties that require non-default
            //       values for the process to start.  In this case, we do not
            //       want the shell to be used for starting the process.  In
            //       addition, both standard output and error data should be
            //       redirected, so it can be logged properly.
            //
            startInfo.UseShellExecute = false;
            startInfo.RedirectStandardOutput = true;
            startInfo.RedirectStandardError = true;

            Process process = new Process();

            process.OutputDataReceived += new DataReceivedEventHandler(
                VsDevEnvSetupOutputDataReceived);

            process.ErrorDataReceived += new DataReceivedEventHandler(
                VsDevEnvSetupErrorDataReceived);

            if (verbose)
                TraceOps.DebugAndTrace(TracePriority.Highest,
                    debugCallback, traceCallback, String.Format(
                    "fileName = {0}, arguments = {1}, " +
                    "workingDirectory = {2}, useShellExecute = {3}, " +
                    "redirectStandardOutput = {4}, " +
                    "redirectStandardError = {5}", ForDisplay(
                    startInfo.FileName), ForDisplay(startInfo.Arguments),
                    ForDisplay(startInfo.WorkingDirectory), ForDisplay(
                    startInfo.UseShellExecute), ForDisplay(
                    startInfo.RedirectStandardOutput), ForDisplay(
                    startInfo.RedirectStandardError)), traceCategory);

            //
            // NOTE: In 'what-if' mode, do not actually start the process.
            //
            if (!whatIf)
            {
                process.Start();
                process.BeginOutputReadLine();
                process.BeginErrorReadLine();
                process.WaitForExit();
            }

            return true;
        }

        ///////////////////////////////////////////////////////////////////////

        private static bool RemoveVsDevEnvSetup(
            Version vsVersion,
            string directory,
            bool perUser,
            bool whatIf,
            bool verbose,
            ref string error
            )
        {
            //
            // NOTE: Since Visual Studio does not have an 'undo' operation for
            //       its 'setup' mode, simply execute the same command again.
            //       This should force it to refresh its list of installed
            //       packages and their associated resources (i.e. this will
            //       effectively 'remove' the package being processed since
            //       this is being done after all the other changes for the
            //       package removal have already been completed).
            //
            return AddVsDevEnvSetup(
                vsVersion, directory, perUser, whatIf, verbose, ref error);
        }

        ///////////////////////////////////////////////////////////////////////

        private static bool ProcessVsDevEnvSetup(
            MockRegistryKey rootKey,
            Version vsVersion,
            string suffix,
            Package package,
            string directory,
            object clientData,
            bool perUser,
            bool wow64,
            bool throwOnMissing,
            bool whatIf,
            bool verbose,
            ref string error
            )
        {
            AnyPair<string, bool> pair = clientData as AnyPair<string, bool>;

            if (pair == null)
            {
                error = "invalid VS callback data";
                return false;
            }

            if (pair.Y)
            {
                return AddVsDevEnvSetup(
                    vsVersion, directory, perUser, whatIf, verbose, ref error);
            }
            else
            {
                return RemoveVsDevEnvSetup(
                    vsVersion, directory, perUser, whatIf, verbose, ref error);
            }
        }
        #endregion
        #endregion

        ///////////////////////////////////////////////////////////////////////

        #region Application Entry Point

                    #region VS DataProvider
                    if (configuration.HasFlags(
                            InstallFlags.VsDataProvider, true))
                    {
                        if (!ForEachVsVersionRegistry(registry,
                                vsList, ProcessVsDataProvider,
                                configuration.VsVersionSuffix, package,
                                fileNameData, configuration.PerUser,
                                VsIs32BitOnly || configuration.Wow64,
                                configuration.ThrowOnMissing,
                                configuration.WhatIf, configuration.Verbose,
                                ref error))
                        {
                            TraceOps.ShowMessage(TracePriority.Highest,
                                debugCallback, traceCallback, thisAssembly,
                                error, traceCategory, MessageBoxButtons.OK,
                                MessageBoxIcon.Error);

                            TraceOps.DebugAndTrace(TracePriority.MediumHigh,
                                debugCallback, traceCallback, "Failure.",
                                traceCategory);

                            return 1; /* FAILURE */
                        }
                    }
                    #endregion

                    ///////////////////////////////////////////////////////////

                    #region VS DevEnv Setup
                    if (configuration.HasFlags(
                            InstallFlags.VsDevEnvSetup, true))
                    {
                        if (!ForEachVsVersionRegistry(registry,
                                vsList, ProcessVsDevEnvSetup,
                                configuration.VsVersionSuffix, package,
                                fileNameData, configuration.PerUser,
                                VsIs32BitOnly || configuration.Wow64,
                                configuration.ThrowOnMissing,
                                configuration.WhatIf, configuration.Verbose,
                                ref error))
                        {