MarkItUp.SingleUserBlog/UI/DailyLinkFeedHandler.cs

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using System;
using System.Web;
using System.Xml;
using MarkItUp.SingleUserBlog.UI;
using MarkItUp.SingleUserBlog.Services;
using MarkItUp.SingleUserBlog.Common;
using MarkItUp.SingleUserBlog.UI.WebParts;
using System.Collections.Generic;
using System.IO;


namespace MarkItUp.SingleUserBlog.UI {

    public class DailyLinksFeedHandler : IHttpHandler {

        public void ProcessRequest(HttpContext context) {
            context.Response.ContentType = "text/xml";
            XmlTextWriter writer = new XmlTextWriter(context.Response.Output);
            writer.Formatting = Formatting.Indented;

            RssFeedWriter feed = new RssFeedWriter();
            feed.Title = string.Format("{0} - Daily Links.", BlogConfigurationSettings.BlogTitle);
            feed.Description = string.Format("Daily Links for {0}.", BlogConfigurationSettings.BlogTitle);
            feed.WriteFeed(writer, GetDailyLinks());
        }


        private List<DailyLink> GetDailyLinks() {


            string cacheKey = "DailyLinksForFeed";

            List<DailyLink> links = HttpRuntime.Cache[cacheKey] as List<DailyLink>;

            if (links == null) {
                links = new List<DailyLink>();

                try {

                    string filePath = Path.Combine(Globals.BlogIndexDataFolderPath, "DailyLinks.xml");
                    XmlDocument doc = new XmlDocument();
                    doc.Load(filePath);

                    XmlNodeList nodes = doc.DocumentElement.SelectNodes("DailyLink");

                    if (nodes != null && nodes.Count > 0) {

                        int ceiling = (nodes.Count > 9) ? 9 : nodes.Count - 1;
                        int i = 0;
                        while (i <= ceiling) {
                            DailyLink link = new DailyLink();
                            link.Fill(nodes[i]);
                            links.Add(link);
                            i++;
                        }
                    }

                } catch (Exception ex) {
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