Add newInlineXHTMLContent

inlineXHTMLContent.go

@@ -1,6 +1,10 @@
 package atomfeed
 
-import "errors"
+import (
+	"errors"
+	"fmt"
+	"reflect"
+)
 
 type InlineXHTMLContent struct {
 	*CommonAttributes
@@ -8,6 +12,18 @@ type InlineXHTMLContent struct {
 	XHTMLDiv string `xml:"xhtmldiv"`
 }
 
+func newInlineXHTMLContent(mediaType string, content any) (*InlineXHTMLContent, error) {
+	if mediaType != "xhtml" {
+		return nil, fmt.Errorf("media type %v incompatible with inline xhtml content", mediaType)
+	}
+
+	if reflect.TypeOf(content).Kind() != reflect.String {
+		return nil, fmt.Errorf("content type %T incompatible with inline xhtml content", content)
+	}
+
+	return &InlineXHTMLContent{Type: mediaType, XHTMLDiv: content.(string)}, nil
+}
+
 func (i *InlineXHTMLContent) isContent() bool { return true }
 
 func (i *InlineXHTMLContent) hasSRC() bool { return false }