#!/usr/bin/env python

"""
    Extract a list of $INCLUDE paths from a zone file.
"""

import logging; log = logging.getLogger('pvl.dns-includes')
import optparse
import pvl.args
import pvl.dns
import pvl.dns.process

def main (argv):
    parser = optparse.OptionParser(main.__doc__)
    parser.add_option_group(pvl.args.parser(parser))
    parser.add_option_group(pvl.dns.process.optparser(parser))

    parser.add_option('--include-path',         metavar='PATH',
            help="Rewrite includes to given absolute path")

    # input
    options, args = pvl.args.parse(parser, argv)
    
    # process
    zone = list(pvl.dns.process.apply_zone(options, args))

    if options.include_path:
        log.info("Set zone include path: %s", options.include_path)

        zone = list(pvl.dns.process.zone_includes_path(zone, options.include_path))

    for include in pvl.dns.process.zone_includes(zone):
        # output include path only
        print include

    return 0

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