I want a regular expression for javascript to parse a multipart/mixed body. For example, in the following:
This is a message with multiple parts in MIME format.
 --frontier
 Content-Type: text/plain
 This is the body of the message.
 --frontier
 Content-Type: application/octet-stream
 Content-Transfer-Encoding: base64
 PGh0bWw+CiAgPGhlYWQ+CiAgPC9oZWFkPgogIDxib2R5PgogICAgPHA+VGhpcyBpcyB0aGUg
 Ym9keSBvZiB0aGUgbWVzc2FnZS48L3A+CiAgPC9ib2R5Pgo8L2h0bWw+Cg==
The result should be an array of the following strings:
 [**"Content-Type: text/plain
 This is the body of the message."**,
 **"Content-Type: application/octet-stream
 Content-Transfer-Encoding: base64
 PGh0bWw+CiAgPGhlYWQ+CiAgPC9oZWFkPgogIDxib2R5PgogICAgPHA+VGhpcyBpcyB0aGUg
 Ym9keSBvZiB0aGUgbWVzc2FnZS48L3A+CiAgPC9ib2R5Pgo8L2h0bWw+Cg=="**]
 
    