code.delx.au - offlineimap/blob - head/offlineimap/folder/Maildir.py

   1 # Maildir folder support
   2 # Copyright (C) 2002 John Goerzen
   3 # <jgoerzen@complete.org>
   4 #
   5 #    This program is free software; you can redistribute it and/or modify
   6 #    it under the terms of the GNU General Public License as published by
   7 #    the Free Software Foundation; either version 2 of the License, or
   8 #    (at your option) any later version.
   9 #
  10 #    This program is distributed in the hope that it will be useful,
  11 #    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 #    GNU General Public License for more details.
  14 #
  15 #    You should have received a copy of the GNU General Public License
  16 #    along with this program; if not, write to the Free Software
  17 #    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18
  19 from Base import BaseFolder
  20 from imapsync import imaputil
  21 import os.path, os, re
  22
  23 class MaildirFolder(BaseFolder):
  24     def __init__(self, root, name):
  25         self.name = name
  26         self.root = root
  27         self.sep = '.'
  28         self.uidfilename = os.path.join(self.getfullname(), "imapsync.uidvalidity")
  29         self.messagelist = None
  30
  31     def getuidvalidity(self):
  32         if not os.path.exists(self.uidfilename):
  33             return None
  34         file = open(self.uidfilename, "rt")
  35         retval = int(file.readline().strip())
  36         file.close()
  37         return retval
  38
  39     def saveuidvalidity(self, newval):
  40         file = open(self.uidfilename, "wt")
  41         file.write("%d\n", newval)
  42         file.close()
  43
  44     def isuidvalidityok(self, remotefolder):
  45         myval = self.getuidvalidity()
  46         if myval != None:
  47             return myval == remotefolder.getuidvalidity()
  48         else:
  49             self.saveuidvalidity(remotefolder.getuidvalidity())
  50
  51     def cachemessagelist(self):
  52         """Cache the message list.  Maildir flags are:
  53         R (replied)
  54         S (seen)
  55         T (trashed)
  56         D (draft)
  57         F (flagged)
  58         and must occur in ASCII order."""
  59         self.messagelist = {}
  60         files = []
  61         nouidcounter = -1               # Messages without UIDs get
  62                                         # negative UID numbers.
  63         for dirannex in ['new', 'cur']:
  64             fulldirname = os.path.join(self.getfullname(), dirannex)
  65             files.append([os.path.join(fulldirname, filename) for
  66                           filename in os.listdir(fulldirname)])
  67         for file in files:
  68             messagename = os.path.basename(file)
  69             uidmatch = re.search(',U=(\d+)', messagename)
  70             uid = None
  71             if not uidmatch:
  72                 uid = nouidcounter
  73                 nouidcounter -= 1
  74             else:
  75                 uid = int(uidmatch.group(1))
  76             flagmatch = re.search(':.*2,([A-Z]+)')
  77             flags = []
  78             if flagmatch:
  79                 flags = [f for x in flagmatch.group(1)]
  80             self.messagelist[uid] = {'uid': uid,
  81                                      'flags': flags,
  82                                      'filename': messagename}
  83
  84     def getmessagelist(self):
  85         return self.messagelist
  86
  87