#!/usr/bin/env python


def main(fn_in, fn_out):
  '''
  Import an LDIF file and re-export it to a DSML file.

  It takes two arguments, the existing and the new file.
  '''


  import os
  import ldif
  import dsml


  filein = file(fn_in, 'r')

  # We make sure we don't overwrite an existing file.
  # We let exception rise on their own.
  fd = os.open(fn_out, os.O_WRONLY | os.O_CREAT | os.O_EXCL, 0666)
  fileout = os.fdopen(fd, 'w')

  ldif_content = ldif.LDIFRecordList(filein)
  ldif_content.parse()
  filein.close()

  dsml_out = dsml.DSMLWriter(fileout)

  dsml_out.writeHeader()
  for dn, record in ldif_content.all_records:
    dsml_out.writeRecord(dn, record)

  dsml_out.writeFooter()

  fileout.close()


import sys


if len(sys.argv) != 3:
  raise ValueError
else:
  sys.exit(main(sys.argv[1], sys.argv[2]))