Re: [Classpathx-javamail] Re: UnsupportedEncodingException for unicode-1-1-utf-7

[Chris Burdess]

Boris Folgmann wrote:
> Hi Chris,
> Chris Burdess schrieb/wrote:
>> UTF7 is supported, however I have never heard of anything being
>> identified as "unicode-1-1-utf-7". Do you have a copy of the original
>> message to hand?
> 
> Cite from http://www.faqs.org/rfcs/rfc1642.html
> 
> -------------------------------------------------------------------------
> Use of Character Set UTF-7 Within MIME
> 
>   Character set UTF-7 is safe for mail transmission and therefore may
>   be used with any content transfer encoding in MIME (except where line
>   length and line break restrictions are violated). Specifically, the 7
>   bit encoding for bodies and the Q encoding for headers are both
>   acceptable. The MIME character set identifier is UNICODE-1-1-UTF-7.
> 
>      Example. Here is a text portion of a MIME message containing the
>      Unicode sequence "Hi Mom <WHITE SMILING FACE>!" (hexadecimal 0048,
>      0069, 0020, 004D, 006F, 004D, 0020, 263A, 0021).
> 
>      Content-Type: text/plain; charset=UNICODE-1-1-UTF-7
> 
>      Hi Mom +Jjo-!
> [...]
> -------------------------------------------------------------------------

Ah, my bad. UTF7 is only supported at the IMAP protocol level, not at the MIME 
encoding level. If you're interested in developing this functionality, the 
class gnu.inet.imap.UTF7imap may be helpful.
-- 
Chris Burdess