ISODate -> ISOWeek; exists(dirname + "/lock")

AT5/cmd/at5/at5.go

@@ -30,6 +30,11 @@ var (
 	agent = "AhrefsBot/7.0"
 )
 
+func exists(filename string) bool {
+	_, err := os.Stat(filename)
+	return err == nil
+}
+
 func main() {
 	req, err := http.NewRequest("GET", "https://rss.at5.nl/rss", nil)
 	x(err)
@@ -57,6 +62,9 @@ func main() {
 		x(err)
 		year, week := t.ISOWeek()
 		dirname := fmt.Sprintf("/net/corpora/nlnieuws/AT5/%d/%02d", year, week)
+		if exists(dirname + "/lock") {
+			continue
+		}
 		basename := strings.TrimPrefix(item.Guid, "https://www.at5.nl/artikelen/")
 		if i := strings.LastIndex(basename, "/"); i > 0 {
 			basename = basename[:i]