/Web/Components/CultureHelperHttpModule.cs

using System;

using System.Configuration;

using System.Globalization;

using System.Threading;

using System.Web;

using log4net;

using mojoPortal.Business;

using mojoPortal.Business.WebHelpers;

using mojoPortal.Web.Framework;



namespace mojoPortal.Web

{

    public class CultureHelperHttpModule : IHttpModule

    {

        private static readonly ILog log = LogManager.GetLogger(typeof(CultureHelperHttpModule));





        public void Init(HttpApplication application)

        {

            application.Error += new EventHandler(this.Error);

            application.BeginRequest += new EventHandler(BeginRequest);

            application.EndRequest += new EventHandler(this.EndRequest);

        }





        private void BeginRequest(object sender, EventArgs e)

        {



            HttpApplication app = (HttpApplication)sender;



            if (WebUtils.IsRequestForStaticFile(app.Request.Path)) { return; }

            if (app.Request.Path.ContainsCaseInsensitive("csshandler.ashx")) { return; }

            if (app.Request.Path.ContainsCaseInsensitive("thumbnailservice.ashx")) { return; }

            if (app.Request.Path.ContainsCaseInsensitive("GCheckoutNotificationHandler.ashx")) { return; }



            

            // 2006-12-29 Joe Audette

            // CultureInfo for the executing thread is automatically set to the 

            // preferred culture of the user's browser by this web.config setting:

            // <globalization 

            //   culture="auto:en-US" 

            //   uiCulture="auto:en" 

            //   requestEncoding="utf-8" 

            //   responseEncoding="utf-8" 

            //   fileEncoding="iso-8859-15" />

            //

            // the "auto" tells the runtime to use the browser preference

            // and the :en-US tells the runtime to fall back to en-US as the default culture for 

            // missing resource keys or if no resource file exists for the preferred culture

            // you can specify a different default culture by replacing en-US with your preferred

            // culture, but you should make sure that the resource file for the default culture 

            // has no missing keys or runtime errors could occur



            //by default the culture of the executing thread is set to that of the browser preferred language setting

            // and this causes the use of the language specific resource if available else it falls back to the default en-US

            //as defined in Web.config globalization section

            //below we are using a config setting to change the default behavior to force the thread to use a specific culture

            //however if there are missing keys in the specified culture it can still fall back to en-US as it should

            if (WebConfigSettings.UseCultureOverride)

            {

                CultureInfo siteCulture;

                CultureInfo siteUICulture;

                try

                {

                    siteCulture = SiteUtils.GetDefaultCulture();

                    siteUICulture = SiteUtils.GetDefaultUICulture();

                }

                catch (InvalidOperationException) { return; }

                catch (System.Data.Common.DbException) { return; }



                if (siteCulture.IsNeutralCulture)

                {

                    log.Info("cannot use culture " + siteCulture.Name + " because it is a neutral culture. It cannot be used in formatting and parsing and therefore cannot be set as the thread's current culture.");

                }

                else

                {

                    try

                    {

                        Thread.CurrentThread.CurrentCulture = siteCulture;

                        if (WebConfigSettings.SetUICultureWhenSettingCulture)

                        {

                            Thread.CurrentThread.CurrentUICulture = siteUICulture;

                        }

                        

                    }

                    catch (ArgumentException ex)

                    {

                        log.Info("swallowed error in culture helper", ex);

                    }

                    catch (NotSupportedException ex)

                    {

                        log.Info("swallowed error in culture helper", ex);

                    }

                }



            }





            // below we are overriding only to handle culture specific workarounds, for most cultures

            // we don't need to do anything here as the runtime handles it correctly

            // but there are some cultures which are either poorly or incorrectly implemented

            // in the .NET runtime



            if (WebConfigSettings.UseCustomHandlingForPersianCulture)

            {



                if (

                    (CultureInfo.CurrentCulture.Name == "fa-IR")

                    || (CultureInfo.CurrentCulture.TwoLetterISOLanguageName == "fa")

                    )

                {

                    try

                    {

                        CultureInfo PersianCulture = CultureHelper.GetPersianCulture();

                        Thread.CurrentThread.CurrentCulture = PersianCulture;

                        Thread.CurrentThread.CurrentUICulture = PersianCulture;

                    }

                    catch (System.Security.SecurityException ex)

                    {

                        //can happen in medium trust

                        log.Error(ex);

                    }

                    catch (ArgumentException ex)

                    {

                        log.Info("swallowed error in culture helper", ex);

                    }



                }

            }

            



            //this doesn't work but was a nice idea

            //http://weblogs.asp.net/abdullaabdelhaq/archive/2009/06/27/displaying-arabic-number.aspx

            //has the only real solution

            //if ((CultureInfo.CurrentCulture.TwoLetterISOLanguageName == "ar") && (!CultureInfo.CurrentCulture.IsNeutralCulture))

            //{

            //    CultureInfo arabic = new CultureInfo(CultureInfo.CurrentCulture.Name);

            //    arabic.NumberFormat.DigitSubstitution = DigitShapes.NativeNational;

            //    string[] arabicDigits = new string[] { "?", "?", "?", "?", "?", "?", "?", "?", "?", "?" };

            //    arabic.NumberFormat.NativeDigits = arabicDigits;

            //    Thread.CurrentThread.CurrentCulture = arabic;

            //    Thread.CurrentThread.CurrentUICulture = arabic;

            //}



            



        }





        private void Error(object sender, EventArgs e)

        {



        }





        private void EndRequest(object sender, EventArgs e)

        {



        }









        public void Dispose() { }



    }



}