add copyright info, add ToXML support for RssFeed & AtomFeed (provide…

…d you only want to create those), hide more empty members of atom feed

atom.go

@@ -52,8 +52,8 @@ type AtomFeed struct {
 	XMLName     xml.Name `xml:"feed"`
 	Xmlns       string   `xml:"xmlns,attr"`
 	Category    string   `xml:"category,omitempty"`
-	Icon        string   `xml:"icon"`
-	Logo        string   `xml:"logo"`
+	Icon        string   `xml:"icon,omitempty"`
+	Logo        string   `xml:"logo,omitempty"`
 	Rights      string   `xml:"rights,omitempty"`
 	Title       string   `xml:"title"`
 	Subtitle    string   `xml:"subtitle,omitempty"`
@@ -113,9 +113,15 @@ func (a *Atom) FeedXml() interface{} {
 		Subtitle: a.Description,
 		Id:       a.Link.Href,
 		Updated:  updated,
+		Rights:   a.Copyright,
 	}
 	for _, e := range a.Items {
 		feed.Entries = append(feed.Entries, newAtomEntry(e))
 	}
 	return feed
 }
+
+// support the ToXML function for AtomFeeds directly
+func (a *AtomFeed) FeedXml() interface{} {
+	return a
+}

feed_test.go

@@ -14,6 +14,7 @@ func TestFeed(t *testing.T) {
 		Description: "discussion about tech, footie, photos",
 		Author:      &Author{"Jason Moiron", "jmoiron@jmoiron.net"},
 		Created:     now,
+		Copyright:   "This work is copyright © Benjamin Button",
 	}
 
 	feed.Items = []*Item{

rss.go

@@ -92,6 +92,7 @@ func (r *Rss) FeedXml() interface{} {
 			ManagingEditor: author,
 			PubDate:        pub,
 			LastBuildDate:  build,
+			Copyright:      r.Copyright,
 		},
 	}
 	for _, i := range r.Items {
@@ -100,3 +101,7 @@ func (r *Rss) FeedXml() interface{} {
 	return feed
 
 }
+
+func (r *RssFeed) FeedXml() interface{} {
+	return &rssFeedXml{Version: "2.0", Channel: r}
+}