#!/usr/bin/env python

import logging; log = logging.getLogger('pvl.hosts-forward')
import optparse 
import pvl.args
import pvl.hosts
import pvl.hosts.zone

def main (argv):
    """
        Generate bind zonefiles from host definitions.
    """

    parser = optparse.OptionParser(main.__doc__)
    parser.add_option_group(pvl.args.parser(parser))
    parser.add_option_group(pvl.hosts.config.optparser(parser))

    parser.add_option('--forward-zone',         metavar='DOMAIN',
            help="Generate forward zone for domain")
    
    parser.add_option('--add-origin',           action='store_true',
            help="Include $ORIGIN directive in zone")

    # input
    options, args = pvl.args.parse(parser, argv)
    
    if not options.forward_zone:
        log.fatal("required --forward-zone")
        return 1
    
    hosts = pvl.hosts.apply(options, args)

    # process
    for rr in pvl.hosts.zone.apply_hosts_forward(options, hosts, options.forward_zone):
        print unicode(rr)
    
    return 0

if __name__ == '__main__':
    pvl.args.main(main)