#! /usr/bin/python

# See README.txt for information and build instructions.

import addressbook_pb2
import struct
import sys

# Iterates though all people in the AddressBook and prints info about them.
def ListPeople(person):
    print "Person ID:", person.id
    print "  Name:", person.name
    if person.HasField('email'):
      print "  E-mail address:", person.email


def getNext(f, person):
    sz = f.read(4)
    if not sz:
        return None
    ll = struct.unpack("I", sz)[0]
    ss = f.read(ll)
    return person.ParseFromString(ss)


def putResult(f, person):
    ss = address_book.SerializeToString()
    f.write(struct.pack("I", len(ss)))
    f.write(ss)


def main():
    address_book = addressbook_pb2.Person()
    # Read the existing address book.
    f1 = open(sys.argv[1], "rb")
    f2 = open(sys.argv[2], "rb")

    e1 = getNext(f1, address_book)
    e2 = getNext(f2, address_book)
    while e1 and e2:
        if e1.id == e2.id:
            tmp = merge(e1, e2)
            putResult(f2, address_book, e3)




    ListPeople(address_book)

f.close()