Implement XML element parsing with Generic

This helps to avoid duplicated code when new XML elements are described
as custom structs.

1 files changed, 10 insertions, 7 deletions

diff --git a/xmpp/routing.go b/xmpp/routing.go
index e8aa4ed..2b1680f 100644
--- a/xmpp/routing.go
+++ b/xmpp/routing.go
@@ -8,14 +8,17 @@ import (
 func route(s *xml.StartElement, d *xml.Decoder, c chan<- any) {
 	switch (*s).Name {
 	case xml.Name{`http://etherx.jabber.org/streams`, `features`}:
-		data := streamFeatures{}
-		err := d.DecodeElement(&data, s)
-		if err != nil {
-			log.Printf("Could not decode stream features: %v\n", err)
-		} else {
-			log.Print(data) // TODO
-		}
+		parse(streamFeatures{}, s, d, c)
 	default:
 		d.Skip()
 	}
 }
+
+func parse[T any](data T, s *xml.StartElement, d *xml.Decoder, c chan<- any) {
+	err := d.DecodeElement(&data, s)
+	if err != nil {
+		log.Printf("Could not decode stream features: %v\n", err)
+	} else {
+		c <- data
+	}
+}