Feeds: Don't forget entries or their unread status

Three important changes:

1) Visited URLs can be marked as "kept" so they will never be discarded due to old age.
2) Feed entries are not discarded from the database until they are removed from the source, and then become too old (six months).
3) Visited feed entry URLs are always flagged as kept, so the (un)read status will not be forgotten.

1 files changed, 4 insertions, 1 deletions

diff --git a/src/visited.h b/src/visited.h
index fec0b4c3..1f2d4fcf 100644
--- a/src/visited.h
+++ b/src/visited.h
@@ -41,6 +41,7 @@ struct Impl_VisitedUrl {
 
 enum iVisitedUrlFlag {
     transient_VisitedUrlFlag = 0x1, /* redirected; don't show in history */
+    kept_VisitedUrlFlag      = 0x2, /* don't discard this even after max age */
 };
 
 iDeclareType(Visited)
@@ -52,7 +53,9 @@ void    save_Visited            (const iVisited *, const char *dirPath);
 
 iTime   urlVisitTime_Visited    (const iVisited *, const iString *url);
 void    visitUrl_Visited        (iVisited *, const iString *url, uint16_t visitFlags); /* adds URL to the visited URLs set */
+void    setUrlKept_Visited      (iVisited *, const iString *url, iBool isKept); /* URL is marked as (non)discardable */
 void    removeUrl_Visited       (iVisited *, const iString *url);
 iBool   containsUrl_Visited     (const iVisited *, const iString *url);
 
-const iPtrArray *  list_Visited (const iVisited *, size_t count); /* returns collected */
+const iPtrArray *   list_Visited        (const iVisited *, size_t count); /* returns collected */
+const iPtrArray *   listKept_Visited    (const iVisited *);