From 6c3098a134d262c8919417fd8b7ddadb6a1c8a2d Mon Sep 17 00:00:00 2001
From: Ryan <ryan.a.ballinger@gmail.com>
Date: Mon, 28 Dec 2020 14:51:48 +1000
Subject: [PATCH] converts encoding to lowercase

I'm receiving emails from third parties which are incorrectly setting "Content-Transfer-Encoding" to "Base64" rather than "base64"
---
 parsemail.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/parsemail.go b/parsemail.go
index 6a60192..e3054a7 100644
--- a/parsemail.go
+++ b/parsemail.go
@@ -345,7 +345,7 @@ func decodeAttachment(part *multipart.Part) (at Attachment, err error) {
 }
 
 func decodeContent(content io.Reader, encoding string) (io.Reader, error) {
-	switch encoding {
+	switch strings.ToLower(encoding) {
 	case "base64":
 		decoded := base64.NewDecoder(base64.StdEncoding, content)
 		b, err := ioutil.ReadAll(decoded)
@@ -490,4 +490,4 @@ type Email struct {
 
 	Attachments   []Attachment
 	EmbeddedFiles []EmbeddedFile
-}
\ No newline at end of file
+}