Expose Torrent.SetDisplayName

client.go

@@ -2183,7 +2183,7 @@ func (cl *Client) AddTorrentSpec(spec *TorrentSpec) (T Torrent, new bool, err er
 		}
 	}
 	if spec.DisplayName != "" {
-		t.displayName = spec.DisplayName
+		t.setDisplayName(spec.DisplayName)
 	}
 	// Try to merge in info we have on the torrent. Any err left will
 	// terminate the function.

t.go

@@ -84,3 +84,11 @@ func (t Torrent) Seeding() bool {
 	defer t.cl.mu.Unlock()
 	return t.cl.seeding(t.torrent)
 }
+
+// Clobbers the torrent display name. The display name is used as the torrent
+// name if the metainfo is not available.
+func (t Torrent) SetDisplayName(dn string) {
+	t.cl.mu.Lock()
+	defer t.cl.mu.Unlock()
+	t.torrent.setDisplayName(dn)
+}

torrent.go

@@ -103,6 +103,10 @@ var (
 	piecePrioritiesNew    = expvar.NewInt("piecePrioritiesNew")
 )
 
+func (t *torrent) setDisplayName(dn string) {
+	t.displayName = dn
+}
+
 func (t *torrent) newConnPiecePriorities() []int {
 	_ret := t.connPiecePriorites.Get()
 	if _ret != nil {