dotnet · daveaglick · May 15, 2018 · May 17, 2018
diff --git a/src/Rss/RssElementNames.cs b/src/Rss/RssElementNames.cs
@@ -36,6 +36,7 @@ public static class RssElementNames
         public const string TextInput = "textInput";
         public const string TimeToLive = "ttl";
         public const string Title = "title";
+        public const string Updated = "updated";
         public const string Url = "url";
         public const string Version = "version";
     }

diff --git a/src/Rss/RssFormatter.cs b/src/Rss/RssFormatter.cs
@@ -308,6 +308,13 @@ public virtual ISyndicationContent CreateContent(ISyndicationItem item)
                 content.AddField(new SyndicationContent(RssElementNames.PubDate, FormatValue(item.Published)));
             }
 
+            //
+            // Updated
+            if (item.LastUpdated != DateTimeOffset.MinValue)
+            {
+                content.AddField(new SyndicationContent(RssElementNames.Updated, Atom.AtomConstants.Atom10Namespace, FormatValue(item.LastUpdated)));
+            }
+
             return content;
         }
 

diff --git a/src/Rss/RssParser.cs b/src/Rss/RssParser.cs
@@ -107,7 +107,16 @@ public virtual ISyndicationItem CreateItem(ISyndicationContent content)
             var item = new SyndicationItem();
 
             foreach (var field in content.Fields)
-            {
+            {
+                //
+                // Updated
+                if (field.Namespace == Atom.AtomConstants.Atom10Namespace
+                    && field.Name == RssElementNames.Updated
+                    && TryParseValue(field.Value, out DateTimeOffset updated))
+                {
+                    item.LastUpdated = updated;
+                }
+
                 if (field.Namespace != RssConstants.Rss20Namespace)
                 {
                     continue;

diff --git a/tests/RssReader.cs b/tests/RssReader.cs
@@ -65,6 +65,9 @@ public async Task ReadItemAsContent()
 
                         Assert.Equal("pubDate", fields[5].Name);
                         Assert.False(string.IsNullOrEmpty(fields[5].Value));
+
+                        Assert.Equal("updated", fields[6].Name);
+                        Assert.False(string.IsNullOrEmpty(fields[6].Value));
                     }
                 }
             }
@@ -211,12 +214,14 @@ public static async Task TestReadFeedElements(XmlReader outerXmlReader)
                                 Assert.True(item.Title == "Lorem ipsum 2017-07-06T20:25:00+00:00");
                                 Assert.True(item.Description == "Exercitation sit dolore mollit et est eiusmod veniam aute officia veniam ipsum.");
                                 Assert.True(item.Links.Count() == 3);
+                                Assert.True(item.LastUpdated.ToString() == "12/6/2017 8:25:00 PM +00:00");
                             }
                             else if(items == 2)
                             {
                                 Assert.True(item.Title == "Lorem ipsum 2017-07-06T20:24:00+00:00");
                                 Assert.True(item.Description == "Do ipsum dolore veniam minim est cillum aliqua ea.");
                                 Assert.True(item.Links.Count() == 3);
+                                Assert.True(item.LastUpdated.ToString() == "12/6/2017 8:25:00 PM +00:00");
                             }
 
                             break;

diff --git a/tests/RssWriter.cs b/tests/RssWriter.cs
@@ -264,8 +264,9 @@ public async Task Echo()
                 var sw = new StringWriterWithEncoding(Encoding.UTF8);
 
                 using (var xmlWriter = XmlWriter.Create(sw))
-                {
-                    var writer = new RssFeedWriter(xmlWriter);
+                {
+                    var attributes = new SyndicationAttribute[] { new SyndicationAttribute("xmlns:a10", "http://www.w3.org/2005/Atom") };
+                    var writer = new RssFeedWriter(xmlWriter, attributes);
 
                     while (await reader.Read())
                     {
@@ -293,7 +294,7 @@ public async Task Echo()
                 }
 
                 res = sw.ToString();
-                Assert.True(res == "<?xml version=\"1.0\" encoding=\"utf-8\"?><rss version=\"2.0\"><channel><title asd=\"123\">Lorem ipsum feed for an interval of 1 minutes</title><description>This is a constantly updating lorem ipsum feed</description><link length=\"123\" type=\"testType\">http://example.com/</link><image><url>http://2.bp.blogspot.com/-NA5Jb-64eUg/URx8CSdcj_I/AAAAAAAAAUo/eCx0irI0rq0/s1600/bg_Microsoft_logo3-20120824073001907469-620x349.jpg</url><title>Microsoft News</title><link>http://www.microsoft.com/news</link><description>Test description</description></image><generator>RSS for Node</generator><lastBuildDate>Thu, 06 Jul 2017 20:25:17 GMT</lastBuildDate><managingEditor>John Smith</managingEditor><pubDate>Thu, 06 Jul 2017 20:25:00 GMT</pubDate><copyright>Michael Bertolacci, licensed under a Creative Commons Attribution 3.0 Unported License.</copyright><ttl>60</ttl><item><title>Lorem ipsum 2017-07-06T20:25:00+00:00</title><enclosure url=\"http://www.scripting.com/mp3s/weatherReportSuite.mp3\" length=\"12216320\" type=\"audio/mpeg\" /><link>http://example.com/test/1499372700</link><guid>http://example.com/test/1499372700</guid><description>Exercitation sit dolore mollit et est eiusmod veniam aute officia veniam ipsum.</description><author>John Smith</author><pubDate>Thu, 06 Jul 2017 20:25:00 GMT</pubDate></item><item><title>Lorem ipsum 2017-07-06T20:24:00+00:00</title><link>http://example.com/test/1499372640</link><guid>http://example.com/test/1499372640</guid><enclosure url=\"http://www.scripting.com/mp3s/weatherReportSuite.mp3\" length=\"12216320\" type=\"audio/mpeg\" /><description>Do ipsum dolore veniam minim est cillum aliqua ea.</description><author>John Smith</author><pubDate>Thu, 06 Jul 2017 20:24:00 GMT</pubDate></item></channel></rss>");
+                Assert.True(res == "<?xml version=\"1.0\" encoding=\"utf-8\"?><rss xmlns:a10=\"http://www.w3.org/2005/Atom\" version=\"2.0\"><channel><title asd=\"123\">Lorem ipsum feed for an interval of 1 minutes</title><description>This is a constantly updating lorem ipsum feed</description><link length=\"123\" type=\"testType\">http://example.com/</link><image><url>http://2.bp.blogspot.com/-NA5Jb-64eUg/URx8CSdcj_I/AAAAAAAAAUo/eCx0irI0rq0/s1600/bg_Microsoft_logo3-20120824073001907469-620x349.jpg</url><title>Microsoft News</title><link>http://www.microsoft.com/news</link><description>Test description</description></image><generator>RSS for Node</generator><lastBuildDate>Thu, 06 Jul 2017 20:25:17 GMT</lastBuildDate><managingEditor>John Smith</managingEditor><pubDate>Thu, 06 Jul 2017 20:25:00 GMT</pubDate><copyright>Michael Bertolacci, licensed under a Creative Commons Attribution 3.0 Unported License.</copyright><ttl>60</ttl><item><title>Lorem ipsum 2017-07-06T20:25:00+00:00</title><enclosure url=\"http://www.scripting.com/mp3s/weatherReportSuite.mp3\" length=\"12216320\" type=\"audio/mpeg\" /><link>http://example.com/test/1499372700</link><guid>http://example.com/test/1499372700</guid><description>Exercitation sit dolore mollit et est eiusmod veniam aute officia veniam ipsum.</description><author>John Smith</author><pubDate>Thu, 06 Jul 2017 20:25:00 GMT</pubDate><a10:updated>Wed, 06 Dec 2017 20:25:00 GMT</a10:updated></item><item><title>Lorem ipsum 2017-07-06T20:24:00+00:00</title><link>http://example.com/test/1499372640</link><guid>http://example.com/test/1499372640</guid><enclosure url=\"http://www.scripting.com/mp3s/weatherReportSuite.mp3\" length=\"12216320\" type=\"audio/mpeg\" /><description>Do ipsum dolore veniam minim est cillum aliqua ea.</description><author>John Smith</author><pubDate>Thu, 06 Jul 2017 20:24:00 GMT</pubDate><a10:updated>Wed, 06 Dec 2017 20:25:00 GMT</a10:updated></item></channel></rss>");
             }
 
             await RssReader.TestReadFeedElements(XmlReader.Create(new StringReader(res)));

diff --git a/tests/TestFeeds/rss20-2items.xml b/tests/TestFeeds/rss20-2items.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<rss xmlns:example="http://contoso.com/syndication/feed/examples" version="2.0">
+<rss xmlns:example="http://contoso.com/syndication/feed/examples" xmlns:a10="http://www.w3.org/2005/Atom" version="2.0">
    <channel>
       <title asd="123"><![CDATA[Lorem ipsum feed for an interval of 1 minutes]]></title>
       <description><![CDATA[This is a constantly updating lorem ipsum feed]]></description>
@@ -24,6 +24,7 @@
          <guid isPermaLink="true">http://example.com/test/1499372700</guid>
          <author><![CDATA[John Smith]]></author>
          <pubDate>Thu, 06 Jul 2017 20:25:00 GMT</pubDate>
+         <a10:updated>Thu, 06 Dec 2017 20:25:00 GMT</a10:updated>
          <example:customElement>Testing Custom Elements</example:customElement>
       </item>
       <item>
@@ -33,6 +34,7 @@
          <guid isPermaLink="true">http://example.com/test/1499372640</guid>
          <author><![CDATA[John Smith]]></author>
          <pubDate>Thu, 06 Jul 2017 20:24:00 GMT</pubDate>
+         <a10:updated>Thu, 06 Dec 2017 20:25:00 GMT</a10:updated>
          <enclosure url="http://www.scripting.com/mp3s/weatherReportSuite.mp3" length="12216320" type="audio/mpeg">Ignored Text</enclosure>
          <example:customElement>Testing Custom Elements</example:customElement>      
      </item>

diff --git a/tests/TestFeeds/rss20.xml b/tests/TestFeeds/rss20.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<rss xmlns:atom="http://www.w3.org/2005/Atom" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/elements/1.1/" version="2.0">
+<rss xmlns:atom="http://www.w3.org/2005/Atom" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:a10="http://www.w3.org/2005/Atom" version="2.0">
    <channel>
       <author>abc@def.com (John Doe)</author>
       <title asd="123"><![CDATA[Lorem ipsum feed for an interval of 1 minutes]]></title>
@@ -25,6 +25,7 @@
          <guid isPermaLink="true">http://example.com/test/1499372700</guid>
          <dc:creator><![CDATA[John Smith]]></dc:creator>
          <pubDate>Thu, 06 Jul 2017 20:25:00 GMT</pubDate>
+         <a10:updated>Thu, 06 Dec 2017 20:25:00 GMT</a10:updated>
          <category domain="http://example.com/news/item">Newspapers</category>
       </item>
       <item>
@@ -34,6 +35,7 @@
          <guid isPermaLink="true">http://example.com/test/1499372640</guid>
          <dc:creator><![CDATA[John Smith]]></dc:creator>
          <pubDate>Thu, 06 Jul 2017 20:24:00 GMT</pubDate>
+         <a10:updated>Thu, 06 Dec 2017 20:25:00 GMT</a10:updated>
          <category>Newspapers</category>
       </item>
       <item>
@@ -43,6 +45,7 @@
          <guid isPermaLink="true">http://example.com/test/1499372580</guid>
          <dc:creator><![CDATA[John Smith]]></dc:creator>
          <pubDate>Thu, 06 Jul 2017 20:23:00 GMT</pubDate>
+         <a10:updated>Thu, 06 Dec 2017 20:25:00 GMT</a10:updated>
       </item>
       <item>
          <title><![CDATA[Lorem ipsum 2017-07-06T20:22:00+00:00]]></title>
@@ -51,6 +54,7 @@
          <guid isPermaLink="true">http://example.com/test/1499372520</guid>
          <dc:creator><![CDATA[John Smith]]></dc:creator>
          <pubDate>Thu, 06 Jul 2017 20:22:00 GMT</pubDate>
+         <a10:updated>Thu, 06 Dec 2017 20:25:00 GMT</a10:updated>
       </item>
       <item>
          <title><![CDATA[Lorem ipsum 2017-07-06T20:21:00+00:00]]></title>
@@ -59,6 +63,7 @@
          <guid isPermaLink="true">http://example.com/test/1499372460</guid>
          <dc:creator><![CDATA[John Smith]]></dc:creator>
          <pubDate>Thu, 06 Jul 2017 20:21:00 GMT</pubDate>
+         <a10:updated>Thu, 06 Dec 2017 20:25:00 GMT</a10:updated>
       </item>
       <item>
          <title><![CDATA[Lorem ipsum 2017-07-06T20:20:00+00:00]]></title>
@@ -67,6 +72,7 @@
          <guid isPermaLink="true">http://example.com/test/1499372400</guid>
          <dc:creator><![CDATA[John Smith]]></dc:creator>
          <pubDate>Thu, 06 Jul 2017 20:20:00 GMT</pubDate>
+         <a10:updated>Thu, 06 Dec 2017 20:25:00 GMT</a10:updated>
       </item>
       <item>
          <title><![CDATA[Lorem ipsum 2017-07-06T20:19:00+00:00]]></title>
@@ -75,6 +81,7 @@
          <guid isPermaLink="true">http://example.com/test/1499372340</guid>
          <dc:creator><![CDATA[John Smith]]></dc:creator>
          <pubDate>Thu, 06 Jul 2017 20:19:00 GMT</pubDate>
+         <a10:updated>Thu, 06 Dec 2017 20:25:00 GMT</a10:updated>
       </item>
       <item>
          <title><![CDATA[Lorem ipsum 2017-07-06T20:18:00+00:00]]></title>
@@ -83,6 +90,7 @@
          <guid isPermaLink="true">http://example.com/test/1499372280</guid>
          <dc:creator><![CDATA[John Smith]]></dc:creator>
          <pubDate>Thu, 06 Jul 2017 20:18:00 GMT</pubDate>
+         <a10:updated>Thu, 06 Dec 2017 20:25:00 GMT</a10:updated>
       </item>
       <item>
          <title><![CDATA[Lorem ipsum 2017-07-06T20:17:00+00:00]]></title>
@@ -91,6 +99,7 @@
          <guid isPermaLink="true">http://example.com/test/1499372220</guid>
          <dc:creator><![CDATA[John Smith]]></dc:creator>
          <pubDate>Thu, 06 Jul 2017 20:17:00 GMT</pubDate>
+         <a10:updated>Thu, 06 Dec 2017 20:25:00 GMT</a10:updated>
       </item>
       <item>
          <title><![CDATA[Lorem ipsum 2017-07-06T20:16:00+00:00]]></title>
@@ -99,6 +108,7 @@
          <guid isPermaLink="true">http://example.com/test/1499372160</guid>
          <dc:creator><![CDATA[John Smith]]></dc:creator>
          <pubDate>Thu, 06 Jul 2017 20:16:00 GMT</pubDate>
+         <a10:updated>Thu, 06 Dec 2017 20:25:00 GMT</a10:updated>
       </item>
    </channel>
 </rss>