.offlineimap.py

#!/usr/bin/python2
# -*- coding: utf-8 -*-

import sys
import re, os
import binascii
import codecs
import netrc

def get_password_emacs(machine, login, port):
    s = "machine %s login %s port %s password ([^ ]*)\n" % (machine, login, port)
    p = re.compile(s)
    authinfo = os.popen("gpg -q --no-tty -d ~/.authinfo.gpg").read()
    return p.search(authinfo).group(1)

#############
# Nametrans #
#############
gmail_folders = [u'すべてのメール', u'ゴミ箱', u'スター付き', u'下書き', u'重要', u'送信済みメール', 'Drafts']

def gmail_local_nametrans(foldername, prefix='[Gmail]', separator='/'):
    if foldername in gmail_folders:
        return "{}{}{}".format(prefix, separator, foldername)
    else:
        return foldername




# encoding
 
def modified_base64(s):
    s = s.encode('utf-16be')
    return binascii.b2a_base64(s).rstrip('\n=').replace('/', ',')
 
def doB64(_in, r):
    if _in:
        r.append('&%s-' % modified_base64(''.join(_in)))
        del _in[:]
 
def encoder(s):
    r = []
    _in = []
    for c in s:
        ordC = ord(c)
        if 0x20 <= ordC <= 0x25 or 0x27 <= ordC <= 0x7e:
            doB64(_in, r)
            r.append(c)
        elif c == '&':
            doB64(_in, r)
            r.append('&-')
        else:
            _in.append(c)
    doB64(_in, r)
    return (str(''.join(r)), len(s))
 
 
# decoding
 
def modified_unbase64(s):
    b = binascii.a2b_base64(s.replace(',', '/') + '===')
    return unicode(b, 'utf-16be')
 
 
def decoder(s):
    r = []
    decode = []
    for c in s:
        if c == '&' and not decode:
            decode.append('&')
        elif c == '-' and decode:
            if len(decode) == 1:
                r.append('&')
            else:
                r.append(modified_unbase64(''.join(decode[1:])))
            decode = []
        elif decode:
            decode.append(c)
        else:
            r.append(c)
    if decode:
        r.append(modified_unbase64(''.join(decode[1:])))
    bin_str = ''.join(r)
    return (bin_str, len(s))
 
 
class StreamReader(codecs.StreamReader):
    def decode(self, s, errors='strict'):
        return decoder(s)
 
 
class StreamWriter(codecs.StreamWriter):
    def decode(self, s, errors='strict'):
        return encoder(s)
 
 
def imap4_utf_7(name):
    if name == 'imap4-utf-7':
        return (encoder, decoder, StreamReader, StreamWriter)
codecs.register(imap4_utf_7)