Skip to content

Instantly share code, notes, and snippets.

@scrinzi
Created August 6, 2012 13:33
Show Gist options
  • Save scrinzi/3274493 to your computer and use it in GitHub Desktop.
Save scrinzi/3274493 to your computer and use it in GitHub Desktop.
Migrate from KMail to ThunderBird
#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Armin Scrinzi, August 4, 2012
Frédéric Grosshans, 19 January 2012
Nathan R. Yergler, 6 June 2010
This file does not contain sufficient creative expression to invoke
assertion of copyright. No warranty is expressed or implied; use at
your own risk.
---
Recursively descends into a KMail maildir directory and recreates in mbox format
USAGE:
> chmod u+x
> kmaildir_to_mbox_sub.py KMAIL_DIR MBOX_DIR
[KMAIL_DIR] path to the kmail directory
[MBOX_DIR] directory where mbox files and subdirectories will be created
Uses Python's included mailbox library to convert mail archives from
maildir [http://en.wikipedia.org/wiki/Maildir] to
mbox [http://en.wikipedia.org/wiki/Mbox] format, icluding subfolder.
See http://docs.python.org/library/mailbox.html#mailbox.Mailbox for
full documentation on this library.
"""
import mailbox
import sys
import email
import os
def maildir2mailbox(maildirname, mboxfilename):
"""
slightly adapted from maildir2mbox.py,
Nathan R. Yergler, 6 June 2010
http://yergler.net/blog/2010/06/06/batteries-included-or-maildir-to-mbox-again/
"""
# open the existing maildir and the target mbox file
maildir = mailbox.Maildir(maildirname, email.message_from_file)
mbox = mailbox.mbox(mboxfilename)
# lock the mbox
mbox.lock()
# iterate over messages in the maildir and add to the mbox
for msg in maildir:
mbox.add(msg)
# close and unlock
mbox.close()
maildir.close()
def excluded(dn):
# which directories NOT to consider
return dn in ['new','cur','tmp'] or dn.find('.')==0 or dn.find('.sbd')!=-1
def kmailsub(kmdir,folder):
# how my kmail subdirectories are constructed
return kmdir+'/.'+folder+'.directory'
def kmail_to_mbsub(kmdir,mbdir):
"""convert maildir folders in kmdir into mbox files in directory mbdir
recursively apply to all .FOLDERNAME.directory and create corresponding .sbd
"""
print(kmdir +' -> ' +mbdir)
listofdirs=[dn for dn in os.walk(kmdir).next()[1] if not excluded(dn)]
for curfold in listofdirs:
# recursively do subdirectories (if any)
km_sub=kmailsub(kmdir,curfold)
if os.path.exists(km_sub):
print '\n SUBDIR: ',km_sub
mb_sbd=mbdir+'/'+curfold+'.sbd'
if not os.path.exists(mb_sbd):
os.makedirs(mb_sbd)
kmail_to_mbsub(km_sub,mb_sbd)
print '--- subdirectory done --\n'
# convert current maildir
maildir=kmdir+'/'+curfold
mbname =mbdir+'/'+curfold
# skip if does not contain 'cur'
if 'cur' not in os.walk(maildir).next()[1]: continue
print 'CONVERT: ',maildir+' -> '+mbname
maildir2mailbox(kmdir+'/'+curfold,mbdir+'/'+curfold)
if __name__ == "__main__":
kmail=sys.argv[-2]
mbname=sys.argv[-1]
kmail_to_mbsub(kmail,mbname)
print('Done')
@Peterdes
Copy link

Peterdes commented Feb 8, 2013

I added:

  • if not os.path.exists(mbdir): os.makedirs(mbdir)
    before line 74; the issue was, the program would not work if pointed to begin in a non-existing directory.

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment