ごみです。
{{{
#!/usr/local/bin/python
# -*- coding: utf-8 -*-

import sys

import trac.scripts.admin 


import cmd
import getpass
import os
import shlex
import shutil
import StringIO
import time
import traceback
import urllib

import time
import calendar
import re

import mimetypes
import email
#from email.Parser  import Parser 
from email.Header import decode_header
#from email.Utils import collapse_rfc2231_value
from email.Utils import decode_rfc2231
import types

import os
import email.Errors
import email.Utils
import mailbox

from trac import util
from trac.wiki import wiki_to_html, IWikiSyntaxProvider
from trac.util import  Markup
from trac.web.chrome import add_link, add_stylesheet, INavigationContributor, ITemplateProvider
from trac.attachment import attachments_to_hdf, Attachment
from trac.util import NaivePopen
import tempfile

import getpass, poplib


try:
    sum
except NameError:
    def sum(list):
        """Python2.2 doesn't have sum()"""
        tot = 0
        for item in list:
            tot += item
        return tot


class MailArchiveAdmin(trac.scripts.admin.TracAdmin):

    __env = None
    env = None

        
    def msgfactory(self,fp):
        try:
            return email.message_from_file(fp)
        except email.Errors.MessageParseError:
            # Don't return None since that will
	    # stop the mailbox iterator
	    return ''

    def decode_to_unicode(self, basestr):
        #RFC2231の添付ファイル名はget_filenameではunicodeTypeでくるみたいだ
        if type(basestr) == types.UnicodeType :
            return basestr
        
        decodefrag = email.Header.decode_header(basestr)
        subj_fragments = ['',]
        for frag, enc in decodefrag:
            if enc:
                frag = self.to_unicode(frag, enc)
            subj_fragments.append(frag)
        return ''.join(subj_fragments)
}}}