解析MIME邮件

Question

对于我的新项目，它有电子邮件模块。我需要在web.when上显示所有电子邮件信息，我正在打电话给服务器，我正在获取base64编码的mime数据。应用base64解码技术后，我将获得mime数据，如下所示：

/*********************Mime数据开始*/

From prashant.n@geodesic.com Tue Jun 23 12:01:02 2009
Date: Tue, 23 Jun 2009 12:01:02 +0530
From: Prashant R Naik <prashant.n@geodesic.com>
To: koushik.narayanan@geodesic.com
Subject: This is a test mail
Message-ID: <20090623063102.GA27080@picopeta.com>
Reply-To: Prashant R Naik <prashant.n@geodesic.com>
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="ReaqsoxgOBHFXBhH"
Content-Disposition: inline
User-Agent: Mutt/1.5.18 (2008-05-17)
Status: RO
Content-Length: 1912
Lines: 52


--ReaqsoxgOBHFXBhH
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline

Test mail.
Initiated by prashant

Regards,
-- 
Prashant R Naik
Principal Technologist | Symbian & Web2.0
Geodesic Limited | www.geodesic.com
Tel: +91-80-66551000

--ReaqsoxgOBHFXBhH
Content-Type: image/gif
Content-Disposition: attachment; filename="trash.gif"
Content-Transfer-Encoding: base64

R0lGODlhEAAQANUoADJ8wTqU2DmR1TqV2DN9wTSBxTWFyTaGyTJ9wTWGyTaKzjmS1TOAxTuV
2DaFyTN8wDiN0jiO0jSAxTeKzjqS1DN8wTqR1TWFyjB4vTOBxTmO0TmS1DaKzTeJzTqV1zSA
xDJ8wDqS1TeKzTF4vDF4vTiO0f///zuX2gAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACH5BAEAACgALAAA
AAAQABAAAAaDQNRpSCwWhcakcsk8mZ5Qpik5pUKvT2W1uDVWp+BiYNAImAZmz/lcDoQEFoFp
QTFtTPKFQLCAREolJiURJhCCJhqAJRMiIhwmjSYdJgqUjQoODgkJJgecBp0mBgYXBx8ZBQxY
UAUSDAUACLEPDwgEAAAEIBUEtygkIyMkwMMYw8EjKEEAOw==

--ReaqsoxgOBHFXBhH
Content-Type: image/jpeg
Content-Disposition: attachment; filename="bx.jpg"
Content-Transfer-Encoding: base64

/9j/4AAQSkZJRgABAQEASABIAAD/2wBDAAEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEB
AQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQH/2wBDAQEBAQEBAQEBAQEBAQEB
AQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQH/wAAR
CAAUAAoDAREAAhEBAxEB/8QAFQABAQAAAAAAAAAAAAAAAAAAAAn/xAAYEAEAAwEAAAAAAAAA
AAAAAAAAGWen5//EABQBAQAAAAAAAAAAAAAAAAAAAAD/xAAUEQEAAAAAAAAAAAAAAAAAAAAA
/9oADAMBAAIRAxEAPwCb4AJHym0Vp3PQJTaK07noJHgA/9k=

--ReaqsoxgOBHFXBhH
Content-Type: image/png
Content-Disposition: attachment; filename="day_bg.png"
Content-Transfer-Encoding: base64

iVBORw0KGgoAAAANSUhEUgAAAGQAAAApCAYAAADDJIzmAAAABmJLR0QA/wD/AP+gvaeTAAAA
CXBIWXMAAAsTAAALEwEAmpwYAAAAB3RJTUUH2AwCCS0kTriU2QAAAB10RVh0Q29tbWVudABD
cmVhdGVkIHdpdGggVGhlIEdJTVDvZCVuAAAAXElEQVR42u3bQQEAMAgDMZiqiZtP5AwbfeQk
NO/WvPtLMR0TABEQIAICRECACAgQAREQIAICRECACAgQAREQIAICRECACAgQAREQIAICRECA
CAgQARGQ7NpPPasFT+0FZPjBRwYAAAAASUVORK5CYII=

--ReaqsoxgOBHFXBhH--

/*********************Mime数据结束*

现在的问题是，我必须解析这个数据，并在我的application.since中使用它，这个数据不是xml，所以很难解析它(因为解析一些标签很容易)，任何知道如何解析mime数据的人都可以帮助我。我使用.so来解析这个数据。

提前谢谢你

Answer 1

gen_smtp和erlang_smtp包含用于解析mime消息的代码。

Answer 2

啊，对不起...好的。然后本着古鲁姆和谜语游戏的精神，我只能提供“要么偏航要么什么都没有”，这是不公平的，因为这实际上是两个猜测中的一个。

http://yaws.hyber.org/yapp_intro.yaws

然而，使用自己的mime解析器并不是很难。获取“边界”并将消息拆分到与"--“匹配的行上。然后，对于每个块，解析标题，直到您得到CRLF，CRLF。然后你的内容开始。

我知道说“使用不同的语言”的回答通常是没有帮助的。我猜你没有选择Erlang作为“使这项工作更容易的语言”，所以我猜这是一个外部约束。您是否愿意分享Erlang是您首选的解决方案语言的原因？:)