#! /usr/bin/python
# 
# Copyright (C) 1998,1999,2000,2001,2002 by the Free Software Foundation, Inc.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software 
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
"""Redo the archives which have been edited.  The files specified in 
mm_cfg.EDITED_ARCHIVES_FILE is used as input.

This script should be run nightly from cron.  When run from the command line,
the following usage is understood:

Usage: %(program)s [-v] [-h]

Where:
    --verbose
    -v
        print each list as its archives are being redone

    --help
    -h
        print this message and exit

"""

import sys
import os
import time
from stat import *
from string import strip
import getopt
import paths
from Mailman.i18n import _

import paths
# mm_cfg must be imported before the other modules, due to the side-effect of
# it hacking sys.paths to include site-packages.  Without this, running this
# script from cron with python -S will fail.
from Mailman import mm_cfg
from Mailman import Utils
from Mailman import MailList



program = sys.argv[0]
VERBOSE = 0

def usage(code, msg=''):
    if code:
        fd = sys.stderr
    else:
        fd = sys.stdout
    print >> fd, _(__doc__) % globals()
    if msg:
        print >> fd, msg
    sys.exit(code)

def main():
    global VERBOSE
    try:
        opts, args = getopt.getopt(sys.argv[1:], 'vh', ['verbose', 'help'])
    except getopt.error, msg:
        usage(1, msg)

    # defaults
    for opt, arg in opts:
        if opt in ('-h', '--help'):
            usage(0)
        elif opt in ('-v', '--verbose'):
            VERBOSE = 1

    # get listnames from edited-archives files
    try:
        fp = open(mm_cfg.EDITED_ARCHIVES_FILE)
        listnames = fp.readlines()
        fp.close()
    except IOError:
        if VERBOSE:
            print 'No archives to process.'
        return

    listnames.sort()
    listnames = RemoveDuplicates(listnames)
    # process all the specified lists
    for name in listnames:
        name = strip(name)
        mlist = MailList.MailList(name, lock=0)
        if not mlist:
            continue

        if VERBOSE:
            print 'Processing list: ' + name
        # note: locking is taken care of in bin/arch
        archcommand = os.path.join(mm_cfg.EXEC_PREFIX, 'bin/arch')
        os.system(archcommand + ' -q --wipe ' + name)

    # remove edited-archives file
    os.unlink(mm_cfg.EDITED_ARCHIVES_FILE)

def RemoveDuplicates(list):
    n = len(list)
    last = list[0]
    i = 1
    lasti = 1
    while i < n:
        if list[i] != last:
            list[lasti] = list[i]
            last = list[i]
            lasti += 1
        i += 1
    return list[:lasti]

if __name__ == '__main__':
    main()