From: Mike Fletcher <lemurific+rforum@...>
Date: 2006-04-30T21:25:54+09:00
Subject: Re: How to decode the following string

Rich Ard wrote:
> hello,
> 
> when i work on a pop mail client program, i met the following string at 
> the Subject field:
> 
> Subject: =?GBK?B?dnNvYy5jbiDXorLhs8m5piE==?=
> Subject: =?GB2312?B?RndkOiCyu7rD0uLLvKOsvfHM7LLF1qq1wMTjtcTTys/k?=
> 
> i know they are encoded chinese words. but anybody can advise on how to 
> decode them?

Doing some quick googling shows that the quoted-printable format for 
headers is

=?Charset?encoding?encoded text?=

So these are in the GBK and GB2312 charsets respectively, both encoded 
in Base64.  You could use a regexp to pull the three fields out and then 
use the standard Base64.decode64 to recover the encoded characters from 
the last chunk.

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