/QDFeedParser.Silverlight.Tests/Utils/SilverlightTestFileLoader.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.IO;

using System.IO.IsolatedStorage;

using System.Text;



namespace QDFeedParser.Silverlight.Tests

{

    public class SilverlightTestFileLoader

    {

        public static IList<string> SampleRssFeeds()

        {

            return new[] { "Aaronontheweb-RSS.xml", "del.icio.us-RSS.xml" };

        }



        public static IList<string> SampleAtomFeeds()

        {

            return new[] { "ScottGu-Atom.xml", "GoogleNews-Atom.xml" };

        }



        public static string ReadFeedContents(string path)

        {

            using(var stream = typeof(SilverlightTestFileLoader).Assembly.GetManifestResourceStream(string.Format("QDFeedParser.Silverlight.Tests.TestFiles.{0}", path)))

            {

                using(var streamreader = new StreamReader(stream))

                {

                    return streamreader.ReadToEnd();

                }

            }

        }



        public static void WriteFeedToIsolatedStorage(string feedxml, Uri feedUri)

        {

            using(var storage = IsolatedStorageFile.GetUserStoreForApplication())

            {

                CreateDirectoryTree(feedUri, storage);



                using(var filestream = new IsolatedStorageFileStream(feedUri.OriginalString, FileMode.Create, FileAccess.Write, storage))

                {

                    var data = Encoding.UTF8.GetBytes(feedxml);



                    filestream.Write(data, 0, data.Count());

                }

            }

        }



        public static void CreateDirectoryTree(Uri feedUri)

        {

            using(var storage = IsolatedStorageFile.GetUserStoreForApplication())

            {

                CreateDirectoryTree(feedUri, storage);

            }

        }



        public static void CreateDirectoryTree(Uri feedUri, IsolatedStorageFile storage)

        {

            if (!feedUri.OriginalString.Contains('\\')) return;



            var directory = GetDirectoryPath(feedUri);



            if (!storage.DirectoryExists(directory)) 

                storage.CreateDirectory(directory);

        }



        public static string GetDirectoryPath(Uri feedUri)

        {

            if (!feedUri.OriginalString.Contains('\\')) return string.Empty;



            var directoryPos = feedUri.OriginalString.LastIndexOf('\\');

            return feedUri.OriginalString.Substring(0, directoryPos);

        }

    }



}