#! /usr/bin/python

from cdb import cdbmake
from sre import sub as r_sub, compile as r_compile
from sys import argv, stderr, exit

ego = r_sub(r'^.*[/\\]', '', argv[0])
def die(msg, tag = True):
  if tag: msg = '%s: %s' % (ego, msg)
  print >>stderr, msg
  exit(1)
if len(argv) != 2:
  die('usage: %s GROUPFILE' % ego)

rx_comment = r_compile(r'^\s*(\#|$)')
group = argv[1]
cdb = cdbmake(group + '.cdb', group + '.cdb.new')
i = 0
for line in open(group, 'r'):
  i += 1
  if rx_comment.match(line): continue
  f = line.split()
  if len(f) != 3: die('bad info line %d.' % i)
  l = ' '.join(f)
  tag, group, addr = f
  group = group.replace('.', '-')
  cdb.add('t:%s' % tag, l)
  cdb.add('g:%s' % group, l)
cdb.finish()