Allow only absolute URLs in comments URL

Some feeds are using invalid URLs (random text).

1 files changed, 10 insertions, 1 deletions

diff --git a/reader/atom/atom_10.go b/reader/atom/atom_10.go
index 099cbed..708cc9f 100644
--- a/reader/atom/atom_10.go
+++ b/reader/atom/atom_10.go
@@ -84,7 +84,7 @@ func (a *atom10Entry) Transform() *model.Entry {
 	entry.Content = a.entryContent()
 	entry.Title = a.entryTitle()
 	entry.Enclosures = a.entryEnclosures()
-	entry.CommentsURL = a.Links.firstLinkWithRelationAndType("replies", "text/html")
+	entry.CommentsURL = a.entryCommentsURL()
 	return entry
 }
 
@@ -194,6 +194,15 @@ func (a *atom10Entry) entryEnclosures() model.EnclosureList {
 	return enclosures
 }
 
+// See https://tools.ietf.org/html/rfc4685#section-3
+func (a *atom10Entry) entryCommentsURL() string {
+	commentsURL := a.Links.firstLinkWithRelationAndType("replies", "text/html")
+	if url.IsAbsoluteURL(commentsURL) {
+		return commentsURL
+	}
+	return ""
+}
+
 type atom10Text struct {
 	Type string `xml:"type,attr"`
 	Data string `xml:",chardata"`