Atom10Serializer.cs :  » 2.6.4-mono-.net-core » System.ServiceModel » System » ServiceModel » Syndication » C# / CSharp Open Source

//
// System.ServiceModel.Syndication.Atom10Serializer
//
// Authors:
//  Joel Reed (joelwreed@gmail.com)
//

//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

using System;
using System.Globalization;
using System.Xml;

namespace System.ServiceModel.Syndication{
  public class Atom10Serializer : SyndicationSerializer
  {
    internal override void WriteXml(XmlWriter writer, SyndicationFeed feed)
    {
      writer.WriteStartElement(FeedName, FeedNamespace);

      if (!String.IsNullOrEmpty(feed.Language))
          writer.WriteAttributeString("xml:lang", feed.Language);

      WriteXml(writer, feed.Title, "title", true);
      writer.WriteElementString("id", feed.Id);
      WriteXml(writer, feed.Copyright, "rights");

      string updated = feed.LastUpdatedTime.ToUniversalTime().ToString("s");
      writer.WriteElementString("updated", updated + "Z");

      if (feed.ImageUrl != null)
        writer.WriteElementString("logo", feed.ImageUrl.ToString());

      if (!String.IsNullOrEmpty(feed.Generator))
        writer.WriteElementString("generator", feed.Generator);

      WriteXml(writer, feed.Description, "summary");

      foreach (SyndicationItem item in feed.Items)
        {
          WriteTo(writer, item);
        }

      writer.WriteEndElement();
    }

    internal override void WriteXml(XmlWriter writer, SyndicationItem item)
    {
      writer.WriteStartElement(ItemName, ItemNamespace);
      writer.WriteElementString("id", item.Id);
      WriteXml(writer, item.Title, "title");
      WriteXml(writer, item.Summary, "summary");
      
      DateTime defDate = new DateTime(0);
      if (item.PublishDate != defDate)
        {
          string date = item.PublishDate.ToUniversalTime().ToString("s");
          writer.WriteElementString("published", date + "Z");
        }

      if (item.LastUpdatedTime != defDate)
        {
          string date = item.LastUpdatedTime.ToUniversalTime().ToString("s");
          writer.WriteElementString("updated", date + "Z");
        }

      WriteXml(writer, item.Content, "content");
      WriteXml(writer, item.Copyright, "rights");

      writer.WriteEndElement();
    }

    protected override string FeedName { 
      get { return "feed"; } 
    }

    protected override string FeedNamespace { 
      get { return "http://www.w3.org/2005/Atom"; } 
    }

    protected override string ItemName { 
      get { return "entry"; } 
    }

    protected override string ItemNamespace { 
      get { return "http://www.w3.org/2005/Atom"; } 
    }

  }
}