From 6322566a54a3f80aa7244a1ac9f88aa2b410afc4 Mon Sep 17 00:00:00 2001
From: Jason Streifling <jason@streifling.com>
Date: Tue, 15 Oct 2024 19:46:45 +0200
Subject: [PATCH] Add function to check if the media type is composite

---
 atom.go | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/atom.go b/atom.go
index d3c7a5b..643acc0 100644
--- a/atom.go
+++ b/atom.go
@@ -12,6 +12,15 @@ type (
 	URI          string
 )
 
+func isCompositeMediaType(mediaType string) bool {
+	mediaType, _, err := mime.ParseMediaType(mediaType)
+	if err != nil {
+		return false
+	}
+
+	return strings.HasPrefix(mediaType, "multipart/") || strings.HasPrefix(mediaType, "message/")
+}
+
 func isXMLMediaType(mediaType string) bool {
 	mediaType, _, err := mime.ParseMediaType(mediaType)
 	if err != nil {