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#! @PYTHON@

# Copyright (C) 2002-2007 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
# USA.

"""Move a message from the shunt queue to the original queue.

Usage: %(PROGRAM)s [options] [directory]

Where:

    -h / --help
        Print help and exit.

Optional `directory' specifies a directory to dequeue from other than
qfiles/shunt.  *** Warning ***  Do not unshunt messages that weren't
shunted to begin with.  For example, running unshunt on qfiles/out/
will result in losing all the messages in that queue.
"""

import sys
import getopt

import paths
from Mailman import mm_cfg
from Mailman.Queue.sbcache import get_switchboard
from Mailman.i18n import C_


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


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

    for opt, arg in opts:
        if opt in ('-h', '--help'):
            usage(0)

    if len(args) == 0:
        qdir = mm_cfg.SHUNTQUEUE_DIR
    elif len(args) == 1:
        qdir = args[0]
    else:
        usage(1)

    sb = get_switchboard(qdir)
    sb.recover_backup_files()
    for filebase in sb.files():
        try:
            msg, msgdata = sb.dequeue(filebase)
            whichq = msgdata.get('whichq', mm_cfg.INQUEUE_DIR)
            tosb = get_switchboard(whichq)
            tosb.enqueue(msg, msgdata)
        except Exception, e:
            # If there are any unshunting errors, log them and continue trying
            # other shunted messages.
            print >> sys.stderr, C_(
                'Cannot unshunt message %(filebase)s, skipping:\n%(e)s')
        else:
            # Unlink the .bak file left by dequeue()
            sb.finish(filebase)



if __name__ == '__main__':
    main()