From 9d30e697e61c1af61cbcc2789c87dc05c1265c8b Mon Sep 17 00:00:00 2001
From: daniel oeh <daniel.oeh@gmail.com>
Date: Mon, 17 Feb 2014 22:32:02 +0100
Subject: [PATCH] Resolved issue with guids in rss 2 feeds. fixes #351 and #336

---
 src/de/danoeh/antennapod/feed/FeedItem.java                 | 4 ++--
 src/de/danoeh/antennapod/syndication/namespace/NSRSS20.java | 5 ++++-
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/de/danoeh/antennapod/feed/FeedItem.java b/src/de/danoeh/antennapod/feed/FeedItem.java
index eaae6ae5e..f63b5beb4 100644
--- a/src/de/danoeh/antennapod/feed/FeedItem.java
+++ b/src/de/danoeh/antennapod/feed/FeedItem.java
@@ -107,9 +107,9 @@ public class FeedItem extends FeedComponent implements
      * of the entry.
      */
     public String getIdentifyingValue() {
-        if (itemIdentifier != null) {
+        if (itemIdentifier != null && !itemIdentifier.isEmpty()) {
             return itemIdentifier;
-        } else if (title != null) {
+        } else if (title != null && !title.isEmpty()) {
             return title;
         } else {
             return link;
diff --git a/src/de/danoeh/antennapod/syndication/namespace/NSRSS20.java b/src/de/danoeh/antennapod/syndication/namespace/NSRSS20.java
index 5a2c6005e..3eb49172d 100644
--- a/src/de/danoeh/antennapod/syndication/namespace/NSRSS20.java
+++ b/src/de/danoeh/antennapod/syndication/namespace/NSRSS20.java
@@ -101,7 +101,10 @@ public class NSRSS20 extends Namespace {
 			}
 
 			if (top.equals(GUID) && second.equals(ITEM)) {
-				state.getCurrentItem().setItemIdentifier(content);
+                // some feed creators include an empty or non-standard guid-element in their feed, which should be ignored
+                if (!content.isEmpty()) {
+				    state.getCurrentItem().setItemIdentifier(content);
+                }
 			} else if (top.equals(TITLE)) {
 				if (second.equals(ITEM)) {
 					state.getCurrentItem().setTitle(content);