#!/usr/bin/python

import sys
from ldaptor.protocols.ldap import ldif
from ldaptor import usage, inmemory
from twisted.internet import protocol, reactor, defer

exitStatus=0

def error(fail):
    print >>sys.stderr, 'fail:', fail.getErrorMessage()
    global exitStatus
    exitStatus=1

def output(result, outputFile):
    outputFile.write(ldif.header())
    for op in result:
        outputFile.write(op.asLDIF())

def main(filename1, filename2, outputFile):
    def _open(filename):
        f = open(filename)
        d = inmemory.fromLDIFFile(f)
        return d

    d = _open(filename1)

    def _gotDB1(db1, filename2):
        d = _open(filename2)
        d.addCallback(lambda db2: db1.diffTree(db2))
        return d
    d.addCallback(_gotDB1, filename2)

    d.addCallback(output, outputFile)
    d.addErrback(error)
    d.addBoth(lambda x: reactor.stop())

    reactor.run()
    sys.exit(exitStatus)

class MyOptions(usage.Options, usage.Options_service_location, usage.Options_bind):
    """LDAPtor object rename utility"""

    def parseArgs(self, file1, file2):
        self.opts['file1'] = file1
        self.opts['file2'] = file2

if __name__ == "__main__":
    try:
        config = MyOptions()
        config.parseOptions()
    except usage.UsageError, ue:
        sys.stderr.write('%s: %s\n' % (sys.argv[0], ue))
        sys.exit(1)

    main(config.opts['file1'],
         config.opts['file2'],
         sys.stdout)
