evdist: Fix some segv

evdist/main.go

@@ -89,7 +89,7 @@ func main() {
 
 				v, err = settings.ReadNextSettingsFile(path.Join(settings.SettingsDir, fmt.Sprintf("%d.json", v.Id)), v.Id)
 				if err != nil {
-					log.Printf("Unable to read %d.json: %s", v.Id, err.Error())
+					log.Printf("Unable to read json: %s", err.Error())
 				} else if cur_settings, err := settings.ReadSettings(path.Join(settings.SettingsDir, settings.SettingsFile)); err != nil {
 					log.Printf("Unable to read settings.json: %s", err.Error())
 				} else {
@@ -110,8 +110,17 @@ func main() {
 				if *debugINotify {
 					log.Println("Treating event:", ev, "for", ev.Name)
 				}
-				go l.treat(ev.Name)
-			} else if ev.Op&fsnotify.Write == fsnotify.Write {
+				l.treat(ev.Name)
+			} else if err == nil && ev.Op&watchedNotify == fsnotify.Remove && d.Mode().IsRegular() {
+				if *debugINotify {
+					log.Println("Treating deletion event:", ev, "for", ev.Name)
+				}
+				if ts, err := strconv.ParseInt(strings.TrimSuffix(path.Base(ev.Name), ".json"), 10, 64); err == nil {
+					log.Println("Unable to parseint", ev.Name, err.Error())
+				} else {
+					l.DelEvent(ts)
+				}
+			} else if err == nil && ev.Op&fsnotify.Write == fsnotify.Write {
 				log.Println("FSNOTIFY WRITE SEEN. Prefer looking at them, as it appears files are not atomically moved.")
 				watchedNotify = fsnotify.Write
 			} else if *debugINotify {

evdist/settings.go

@@ -71,6 +71,30 @@ func (l *distList) AddEvent(nsf *settings.NextSettingsFile) {
 	}
 }
 
+func (l *distList) DelEvent(id int64) {
+	l.Lock.Lock()
+
+	istop := len(l.List)
+	for i, n := range l.List {
+		if n.Id == id {
+			istop = i
+			break
+		}
+	}
+
+	if istop == len(l.List)-1 {
+		l.List = l.List[:istop]
+	} else if istop != len(l.List) {
+		l.List = append(l.List[:istop], l.List[istop+1:]...)
+	}
+
+	l.Lock.Unlock()
+
+	if istop == 0 {
+		l.ResetTimer()
+	}
+}
+
 func (l *distList) ResetTimer() {
 	l.Lock.RLock()
 	defer l.Lock.RUnlock()