#!/usr/bin/env python


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

  Use the python ldap library to import and immediately re-export
  an ldif file. This was written as a test to understand that library
  better, but turns out to be useful to write not-so-compliant ldif
  files into RFC compliant ldif files, for example, if utf-8
  characters have not been encoded properly.

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


  import os
  import ldif


  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()

  ldif_out = ldif.LDIFWriter(fileout)

  for dn, record in ldif_content.all_records:
    ldif_out.unparse(dn, record)

  fileout.close()


import sys


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