/// <summary>
        /// Initializes the supplied <see cref="RssChannel"/> using the specified <see cref="XPathNavigator"/> and <see cref="XmlNamespaceManager"/>.
        /// </summary>
        /// <param name="channel">The <see cref="RssChannel"/> to be filled.</param>
        /// <param name="navigator">The <see cref="XPathNavigator"/> used to navigate the channel XML data.</param>
        /// <param name="manager">The <see cref="XmlNamespaceManager"/> used to resolve XML namespace prefixes.</param>
        /// <param name="settings">The <see cref="SyndicationResourceLoadSettings"/> object used to configure the load operation.</param>
        /// <exception cref="ArgumentNullException">The <paramref name="channel"/> is a null reference (Nothing in Visual Basic).</exception>
        /// <exception cref="ArgumentNullException">The <paramref name="navigator"/> is a null reference (Nothing in Visual Basic).</exception>
        /// <exception cref="ArgumentNullException">The <paramref name="manager"/> is a null reference (Nothing in Visual Basic).</exception>
        /// <exception cref="ArgumentNullException">The <paramref name="settings"/> is a null reference (Nothing in Visual Basic).</exception>
        private static void FillChannel(RssChannel channel, XPathNavigator navigator, XmlNamespaceManager manager, SyndicationResourceLoadSettings settings)
        {
            Guard.ArgumentNotNull(channel, "channel");
            Guard.ArgumentNotNull(navigator, "navigator");
            Guard.ArgumentNotNull(manager, "manager");
            Guard.ArgumentNotNull(settings, "settings");

            XPathNavigator descriptionNavigator = navigator.SelectSingleNode("description", manager);
            XPathNavigator linkNavigator        = navigator.SelectSingleNode("link", manager);
            XPathNavigator titleNavigator       = navigator.SelectSingleNode("title", manager);
            XPathNavigator languageNavigator    = navigator.SelectSingleNode("language", manager);

            if (descriptionNavigator != null && !String.IsNullOrEmpty(descriptionNavigator.Value))
            {
                channel.Description = descriptionNavigator.Value;
            }

            if (linkNavigator != null)
            {
                Uri link;
                if (Uri.TryCreate(linkNavigator.Value, UriKind.RelativeOrAbsolute, out link))
                {
                    channel.Link = link;
                }
            }

            if (titleNavigator != null && !String.IsNullOrEmpty(titleNavigator.Value))
            {
                channel.Title = titleNavigator.Value;
            }

            if (languageNavigator != null && !String.IsNullOrEmpty(languageNavigator.Value))
            {
                try
                {
                    CultureInfo language = new CultureInfo(languageNavigator.Value);
                    channel.Language = language;
                }
                catch (ArgumentException)
                {
                    System.Diagnostics.Trace.TraceWarning("Rss092SyndicationResourceAdapter unable to determine CultureInfo with a name of {0}.", languageNavigator.Value);
                }
            }

            XPathNavigator imageNavigator = navigator.SelectSingleNode("image", manager);

            if (imageNavigator != null)
            {
                channel.Image = new RssImage();
                Rss092SyndicationResourceAdapter.FillImage(channel.Image, imageNavigator, manager, settings);
            }

            Rss092SyndicationResourceAdapter.FillChannelOptionals(channel, navigator, manager, settings);

            Rss092SyndicationResourceAdapter.FillChannelCollections(channel, navigator, manager, settings);

            SyndicationExtensionAdapter adapter = new SyndicationExtensionAdapter(navigator, settings);

            adapter.Fill(channel);
        }
示例#2
0
        //============================================================
        //	PUBLIC METHODS
        //============================================================
        #region Fill(RssFeed resource)
        /// <summary>
        /// Modifies the <see cref="RssFeed"/> to match the data source.
        /// </summary>
        /// <param name="resource">The <see cref="RssFeed"/> to be filled.</param>
        /// <exception cref="ArgumentNullException">The <paramref name="resource"/> is a null reference (Nothing in Visual Basic).</exception>
        public void Fill(RssFeed resource)
        {
            //------------------------------------------------------------
            //	Validate parameter
            //------------------------------------------------------------
            Guard.ArgumentNotNull(resource, "resource");

            //------------------------------------------------------------
            //	Create namespace resolver
            //------------------------------------------------------------
            XmlNamespaceManager manager = new XmlNamespaceManager(this.Navigator.NameTable);

            //------------------------------------------------------------
            //	Attempt to fill syndication resource
            //------------------------------------------------------------
            XPathNavigator feedNavigator = this.Navigator.SelectSingleNode("rss", manager);

            if (feedNavigator != null)
            {
                XPathNavigator channelNavigator = feedNavigator.SelectSingleNode("channel", manager);
                if (channelNavigator != null)
                {
                    Rss092SyndicationResourceAdapter.FillChannel(resource.Channel, channelNavigator, manager, this.Settings);
                }

                SyndicationExtensionAdapter adapter = new SyndicationExtensionAdapter(feedNavigator, this.Settings);
                adapter.Fill(resource, manager);
            }
        }
        /// <summary>
        /// Modifies the <see cref="ISyndicationResource"/> to match the data source.
        /// </summary>
        /// <param name="resource">The Really Simple Syndication (RSS) <see cref="ISyndicationResource"/> to be filled.</param>
        /// <param name="resourceMetadata">A <see cref="SyndicationResourceMetadata"/> object that represents the meta-data describing the <paramref name="resource"/>.</param>
        /// <exception cref="ArgumentNullException">The <paramref name="resource"/> is a null reference (Nothing in Visual Basic).</exception>
        /// <exception cref="ArgumentNullException">The <paramref name="resourceMetadata"/> is a null reference (Nothing in Visual Basic).</exception>
        private void FillRssResource(ISyndicationResource resource, SyndicationResourceMetadata resourceMetadata)
        {
            //------------------------------------------------------------
            //	Validate parameter
            //------------------------------------------------------------
            Guard.ArgumentNotNull(resource, "resource");
            Guard.ArgumentNotNull(resourceMetadata, "resourceMetadata");

            //------------------------------------------------------------
            //	Fill syndication resource using appropriate data adapter
            //------------------------------------------------------------
            RssFeed rssFeed = resource as RssFeed;

            if (resourceMetadata.Version == new Version("2.0"))
            {
                Rss20SyndicationResourceAdapter rss20Adapter = new Rss20SyndicationResourceAdapter(this.Navigator, this.Settings);
                rss20Adapter.Fill(rssFeed);
            }

            if (resourceMetadata.Version == new Version("1.0"))
            {
                Rss10SyndicationResourceAdapter rss10Adapter = new Rss10SyndicationResourceAdapter(this.Navigator, this.Settings);
                rss10Adapter.Fill(rssFeed);
            }

            if (resourceMetadata.Version == new Version("0.92"))
            {
                Rss092SyndicationResourceAdapter rss092Adapter = new Rss092SyndicationResourceAdapter(this.Navigator, this.Settings);
                rss092Adapter.Fill(rssFeed);
            }

            if (resourceMetadata.Version == new Version("0.91"))
            {
                Rss091SyndicationResourceAdapter rss091Adapter = new Rss091SyndicationResourceAdapter(this.Navigator, this.Settings);
                rss091Adapter.Fill(rssFeed);
            }

            if (resourceMetadata.Version == new Version("0.9"))
            {
                Rss090SyndicationResourceAdapter rss090Adapter = new Rss090SyndicationResourceAdapter(this.Navigator, this.Settings);
                rss090Adapter.Fill(rssFeed);
            }
        }
        /// <summary>
        /// Modifies the <see cref="RssFeed"/> to match the data source.
        /// </summary>
        /// <param name="resource">The <see cref="RssFeed"/> to be filled.</param>
        /// <exception cref="ArgumentNullException">The <paramref name="resource"/> is a null reference (Nothing in Visual Basic).</exception>
        public void Fill(RssFeed resource)
        {
            Guard.ArgumentNotNull(resource, "resource");

            XmlNamespaceManager manager = new XmlNamespaceManager(this.Navigator.NameTable);

            XPathNavigator feedNavigator = this.Navigator.SelectSingleNode("rss", manager);

            if (feedNavigator != null)
            {
                XPathNavigator channelNavigator = feedNavigator.SelectSingleNode("channel", manager);
                if (channelNavigator != null)
                {
                    Rss092SyndicationResourceAdapter.FillChannel(resource.Channel, channelNavigator, manager, this.Settings);
                }

                SyndicationExtensionAdapter adapter = new SyndicationExtensionAdapter(feedNavigator, this.Settings);
                adapter.Fill(resource, manager);
            }
        }
        /// <summary>
        /// Modifies the <see cref="ISyndicationResource"/> to match the data source.
        /// </summary>
        /// <param name="resource">The Really Simple Syndication (RSS) <see cref="ISyndicationResource"/> to be filled.</param>
        /// <param name="resourceMetadata">A <see cref="SyndicationResourceMetadata"/> object that represents the meta-data describing the <paramref name="resource"/>.</param>
        /// <exception cref="ArgumentNullException">The <paramref name="resource"/> is a null reference (Nothing in Visual Basic).</exception>
        /// <exception cref="ArgumentNullException">The <paramref name="resourceMetadata"/> is a null reference (Nothing in Visual Basic).</exception>
        private void FillRssResource(ISyndicationResource resource, SyndicationResourceMetadata resourceMetadata)
        {
            Guard.ArgumentNotNull(resource, "resource");
            Guard.ArgumentNotNull(resourceMetadata, "resourceMetadata");

            RssFeed rssFeed = resource as RssFeed;

            if (resourceMetadata.Version == new Version("2.0"))
            {
                Rss20SyndicationResourceAdapter rss20Adapter = new Rss20SyndicationResourceAdapter(this.Navigator, this.Settings);
                rss20Adapter.Fill(rssFeed);
            }

            if (resourceMetadata.Version == new Version("1.0"))
            {
                Rss10SyndicationResourceAdapter rss10Adapter = new Rss10SyndicationResourceAdapter(this.Navigator, this.Settings);
                rss10Adapter.Fill(rssFeed);
            }

            if (resourceMetadata.Version == new Version("0.92"))
            {
                Rss092SyndicationResourceAdapter rss092Adapter = new Rss092SyndicationResourceAdapter(this.Navigator, this.Settings);
                rss092Adapter.Fill(rssFeed);
            }

            if (resourceMetadata.Version == new Version("0.91"))
            {
                Rss091SyndicationResourceAdapter rss091Adapter = new Rss091SyndicationResourceAdapter(this.Navigator, this.Settings);
                rss091Adapter.Fill(rssFeed);
            }

            if (resourceMetadata.Version == new Version("0.9"))
            {
                Rss090SyndicationResourceAdapter rss090Adapter = new Rss090SyndicationResourceAdapter(this.Navigator, this.Settings);
                rss090Adapter.Fill(rssFeed);
            }
        }
        /// <summary>
        /// Initializes the supplied <see cref="RssItem"/> using the specified <see cref="XPathNavigator"/> and <see cref="XmlNamespaceManager"/>.
        /// </summary>
        /// <param name="item">The <see cref="RssItem"/> to be filled.</param>
        /// <param name="navigator">The <see cref="XPathNavigator"/> used to navigate the item XML data.</param>
        /// <param name="manager">The <see cref="XmlNamespaceManager"/> used to resolve XML namespace prefixes.</param>
        /// <param name="settings">The <see cref="SyndicationResourceLoadSettings"/> object used to configure the load operation.</param>
        /// <exception cref="ArgumentNullException">The <paramref name="item"/> is a null reference (Nothing in Visual Basic).</exception>
        /// <exception cref="ArgumentNullException">The <paramref name="navigator"/> is a null reference (Nothing in Visual Basic).</exception>
        /// <exception cref="ArgumentNullException">The <paramref name="manager"/> is a null reference (Nothing in Visual Basic).</exception>
        /// <exception cref="ArgumentNullException">The <paramref name="settings"/> is a null reference (Nothing in Visual Basic).</exception>
        private static void FillItem(RssItem item, XPathNavigator navigator, XmlNamespaceManager manager, SyndicationResourceLoadSettings settings)
        {
            Guard.ArgumentNotNull(item, "item");
            Guard.ArgumentNotNull(navigator, "navigator");
            Guard.ArgumentNotNull(manager, "manager");
            Guard.ArgumentNotNull(settings, "settings");

            XPathNavigator    titleNavigator       = navigator.SelectSingleNode("title", manager);
            XPathNavigator    linkNavigator        = navigator.SelectSingleNode("link", manager);
            XPathNavigator    descriptionNavigator = navigator.SelectSingleNode("description", manager);
            XPathNavigator    sourceNavigator      = navigator.SelectSingleNode("source", manager);
            XPathNodeIterator enclosureIterator    = navigator.Select("enclosure", manager);
            XPathNodeIterator categoryIterator     = navigator.Select("category", manager);

            if (titleNavigator != null)
            {
                item.Title = titleNavigator.Value;
            }

            if (descriptionNavigator != null)
            {
                item.Description = descriptionNavigator.Value;
            }

            if (linkNavigator != null)
            {
                Uri link;
                if (Uri.TryCreate(linkNavigator.Value, UriKind.RelativeOrAbsolute, out link))
                {
                    item.Link = link;
                }
            }

            if (sourceNavigator != null)
            {
                item.Source = new RssSource();

                if (sourceNavigator.HasAttributes)
                {
                    string urlAttribute = sourceNavigator.GetAttribute("url", String.Empty);
                    Uri    url;
                    if (Uri.TryCreate(urlAttribute, UriKind.RelativeOrAbsolute, out url))
                    {
                        item.Source.Url = url;
                    }
                }

                if (!String.IsNullOrEmpty(sourceNavigator.Value))
                {
                    item.Source.Title = sourceNavigator.Value;
                }
            }

            if (enclosureIterator != null && enclosureIterator.Count > 0)
            {
                while (enclosureIterator.MoveNext())
                {
                    RssEnclosure enclosure = new RssEnclosure();
                    Rss092SyndicationResourceAdapter.FillEnclosure(enclosure, enclosureIterator.Current, manager, settings);

                    item.Enclosures.Add(enclosure);
                }
            }

            if (categoryIterator != null && categoryIterator.Count > 0)
            {
                while (categoryIterator.MoveNext())
                {
                    RssCategory category = new RssCategory();
                    Rss092SyndicationResourceAdapter.FillCategory(category, categoryIterator.Current, manager, settings);

                    item.Categories.Add(category);
                }
            }

            SyndicationExtensionAdapter adapter = new SyndicationExtensionAdapter(navigator, settings);

            adapter.Fill(item);
        }
        /// <summary>
        /// Initializes the supplied <see cref="RssChannel"/> optional entities using the specified <see cref="XPathNavigator"/> and <see cref="XmlNamespaceManager"/>.
        /// </summary>
        /// <param name="channel">The <see cref="RssChannel"/> to be filled.</param>
        /// <param name="navigator">The <see cref="XPathNavigator"/> used to navigate the channel XML data.</param>
        /// <param name="manager">The <see cref="XmlNamespaceManager"/> used to resolve XML namespace prefixes.</param>
        /// <param name="settings">The <see cref="SyndicationResourceLoadSettings"/> object used to configure the load operation.</param>
        /// <exception cref="ArgumentNullException">The <paramref name="channel"/> is a null reference (Nothing in Visual Basic).</exception>
        /// <exception cref="ArgumentNullException">The <paramref name="navigator"/> is a null reference (Nothing in Visual Basic).</exception>
        /// <exception cref="ArgumentNullException">The <paramref name="manager"/> is a null reference (Nothing in Visual Basic).</exception>
        /// <exception cref="ArgumentNullException">The <paramref name="settings"/> is a null reference (Nothing in Visual Basic).</exception>
        private static void FillChannelOptionals(RssChannel channel, XPathNavigator navigator, XmlNamespaceManager manager, SyndicationResourceLoadSettings settings)
        {
            Guard.ArgumentNotNull(channel, "channel");
            Guard.ArgumentNotNull(navigator, "navigator");
            Guard.ArgumentNotNull(manager, "manager");
            Guard.ArgumentNotNull(settings, "settings");

            XPathNavigator copyrightNavigator      = navigator.SelectSingleNode("copyright", manager);
            XPathNavigator managingEditorNavigator = navigator.SelectSingleNode("managingEditor", manager);
            XPathNavigator webMasterNavigator      = navigator.SelectSingleNode("webMaster", manager);
            XPathNavigator ratingNavigator         = navigator.SelectSingleNode("rating", manager);
            XPathNavigator publicationNavigator    = navigator.SelectSingleNode("pubDate", manager);
            XPathNavigator lastBuildDateNavigator  = navigator.SelectSingleNode("lastBuildDate", manager);
            XPathNavigator textInputNavigator      = navigator.SelectSingleNode("textInput", manager);
            XPathNavigator cloudNavigator          = navigator.SelectSingleNode("cloud", manager);

            if (copyrightNavigator != null)
            {
                channel.Copyright = copyrightNavigator.Value;
            }

            if (managingEditorNavigator != null)
            {
                channel.ManagingEditor = managingEditorNavigator.Value;
            }

            if (webMasterNavigator != null)
            {
                channel.Webmaster = webMasterNavigator.Value;
            }

            if (ratingNavigator != null)
            {
                channel.Rating = ratingNavigator.Value;
            }

            if (publicationNavigator != null)
            {
                DateTime publicationDate;
                if (SyndicationDateTimeUtility.TryParseRfc822DateTime(publicationNavigator.Value, out publicationDate))
                {
                    channel.PublicationDate = publicationDate;
                }
            }

            if (lastBuildDateNavigator != null)
            {
                DateTime lastBuildDate;
                if (SyndicationDateTimeUtility.TryParseRfc822DateTime(lastBuildDateNavigator.Value, out lastBuildDate))
                {
                    channel.LastBuildDate = lastBuildDate;
                }
            }

            if (textInputNavigator != null)
            {
                channel.TextInput = new RssTextInput();
                Rss092SyndicationResourceAdapter.FillTextInput(channel.TextInput, textInputNavigator, manager, settings);
            }

            if (cloudNavigator != null)
            {
                channel.Cloud = new RssCloud();
                Rss092SyndicationResourceAdapter.FillCloud(channel.Cloud, cloudNavigator, manager, settings);
            }
        }
        /// <summary>
        /// Initializes the supplied <see cref="RssChannel"/> collection entities using the specified <see cref="XPathNavigator"/> and <see cref="XmlNamespaceManager"/>.
        /// </summary>
        /// <param name="channel">The <see cref="RssChannel"/> to be filled.</param>
        /// <param name="navigator">The <see cref="XPathNavigator"/> used to navigate the channel XML data.</param>
        /// <param name="manager">The <see cref="XmlNamespaceManager"/> used to resolve XML namespace prefixes.</param>
        /// <param name="settings">The <see cref="SyndicationResourceLoadSettings"/> object used to configure the load operation.</param>
        /// <exception cref="ArgumentNullException">The <paramref name="channel"/> is a null reference (Nothing in Visual Basic).</exception>
        /// <exception cref="ArgumentNullException">The <paramref name="navigator"/> is a null reference (Nothing in Visual Basic).</exception>
        /// <exception cref="ArgumentNullException">The <paramref name="manager"/> is a null reference (Nothing in Visual Basic).</exception>
        /// <exception cref="ArgumentNullException">The <paramref name="settings"/> is a null reference (Nothing in Visual Basic).</exception>
        private static void FillChannelCollections(RssChannel channel, XPathNavigator navigator, XmlNamespaceManager manager, SyndicationResourceLoadSettings settings)
        {
            Guard.ArgumentNotNull(channel, "channel");
            Guard.ArgumentNotNull(navigator, "navigator");
            Guard.ArgumentNotNull(manager, "manager");
            Guard.ArgumentNotNull(settings, "settings");

            XPathNodeIterator skipDaysIterator  = navigator.Select("skipDays/day", manager);
            XPathNodeIterator skipHoursIterator = navigator.Select("skipHours/hour", manager);
            XPathNodeIterator itemIterator      = navigator.Select("item", manager);

            if (skipDaysIterator != null && skipDaysIterator.Count > 0)
            {
                while (skipDaysIterator.MoveNext())
                {
                    if (!String.IsNullOrEmpty(skipDaysIterator.Current.Value))
                    {
                        try
                        {
                            DayOfWeek day = (DayOfWeek)Enum.Parse(typeof(DayOfWeek), skipDaysIterator.Current.Value, true);
                            if (!channel.SkipDays.Contains(day))
                            {
                                channel.SkipDays.Add(day);
                            }
                        }
                        catch (ArgumentException)
                        {
                            System.Diagnostics.Trace.TraceWarning("Rss092SyndicationResourceAdapter unable to determine DayOfWeek with a name of {0}.", skipDaysIterator.Current.Value);
                        }
                    }
                }
            }

            if (skipHoursIterator != null && skipHoursIterator.Count > 0)
            {
                while (skipHoursIterator.MoveNext())
                {
                    int hour;
                    if (Int32.TryParse(skipHoursIterator.Current.Value, NumberStyles.Integer, NumberFormatInfo.InvariantInfo, out hour))
                    {
                        hour = hour - 1;    // Convert to zero-based range

                        if (!channel.SkipHours.Contains(hour) && (hour >= 0 && hour <= 23))
                        {
                            channel.SkipHours.Add(hour);
                        }
                        else
                        {
                            System.Diagnostics.Trace.TraceWarning("Rss092SyndicationResourceAdapter unable to add duplicate or out-of-range skip hour with a value of {0}.", hour);
                        }
                    }
                }
            }

            if (itemIterator != null && itemIterator.Count > 0)
            {
                int counter = 0;
                while (itemIterator.MoveNext())
                {
                    RssItem item = new RssItem();
                    counter++;

                    if (settings.RetrievalLimit != 0 && counter > settings.RetrievalLimit)
                    {
                        break;
                    }

                    Rss092SyndicationResourceAdapter.FillItem(item, itemIterator.Current, manager, settings);

                    ((Collection <RssItem>)channel.Items).Add(item);
                }
            }
        }
        /// <summary>
        /// Modifies the <see cref="ISyndicationResource"/> to match the data source.
        /// </summary>
        /// <param name="resource">The Really Simple Syndication (RSS) <see cref="ISyndicationResource"/> to be filled.</param>
        /// <param name="resourceMetadata">A <see cref="SyndicationResourceMetadata"/> object that represents the meta-data describing the <paramref name="resource"/>.</param>
        /// <exception cref="ArgumentNullException">The <paramref name="resource"/> is a null reference (Nothing in Visual Basic).</exception>
        /// <exception cref="ArgumentNullException">The <paramref name="resourceMetadata"/> is a null reference (Nothing in Visual Basic).</exception>
        private void FillRssResource(ISyndicationResource resource, SyndicationResourceMetadata resourceMetadata)
        {
            //------------------------------------------------------------
            //	Validate parameter
            //------------------------------------------------------------
            Guard.ArgumentNotNull(resource, "resource");
            Guard.ArgumentNotNull(resourceMetadata, "resourceMetadata");

            //------------------------------------------------------------
            //	Fill syndication resource using appropriate data adapter
            //------------------------------------------------------------
            RssFeed rssFeed = resource as RssFeed;

            if (resourceMetadata.Version == new Version("2.0"))
            {
                Rss20SyndicationResourceAdapter rss20Adapter    = new Rss20SyndicationResourceAdapter(this.Navigator, this.Settings);
                rss20Adapter.Fill(rssFeed);
            }

            if (resourceMetadata.Version == new Version("1.0"))
            {
                Rss10SyndicationResourceAdapter rss10Adapter    = new Rss10SyndicationResourceAdapter(this.Navigator, this.Settings);
                rss10Adapter.Fill(rssFeed);
            }

            if (resourceMetadata.Version == new Version("0.92"))
            {
                Rss092SyndicationResourceAdapter rss092Adapter  = new Rss092SyndicationResourceAdapter(this.Navigator, this.Settings);
                rss092Adapter.Fill(rssFeed);
            }

            if (resourceMetadata.Version == new Version("0.91"))
            {
                Rss091SyndicationResourceAdapter rss091Adapter  = new Rss091SyndicationResourceAdapter(this.Navigator, this.Settings);
                rss091Adapter.Fill(rssFeed);
            }

            if (resourceMetadata.Version == new Version("0.9"))
            {
                Rss090SyndicationResourceAdapter rss090Adapter  = new Rss090SyndicationResourceAdapter(this.Navigator, this.Settings);
                rss090Adapter.Fill(rssFeed);
            }
        }