pycapnp/benchmark/addressbook.capnp.bytes.py

from __future__ import print_function
import os
import capnp

this_dir = os.path.dirname(__file__)
addressbook = capnp.load(os.path.join(this_dir, 'addressbook.capnp'))

print = lambda *x: x


def writeAddressBook(f):
    addressBook = addressbook.AddressBook.new_message()
    people = addressBook.init('people', 2)

    alice = people[0]
    alice.id = 123
    alice.name = 'Alice'
    alice.email = 'alice@example.com'
    alicePhones = alice.init('phones', 1)
    alicePhones[0].number = "555-1212"
    alicePhones[0].type = 'mobile'

    bob = people[1]
    bob.id = 456
    bob.name = 'Bob'
    bob.email = 'bob@example.com'
    bobPhones = bob.init('phones', 2)
    bobPhones[0].number = "555-4567"
    bobPhones[0].type = 'home'
    bobPhones[1].number = "555-7654"
    bobPhones[1].type = 'work'

    msg_bytes = addressBook.to_bytes()
    f.write(msg_bytes)

def printAddressBook(msg_bytes):
    addressBook = addressbook.AddressBook.from_bytes(msg_bytes)

    for person in addressBook.people:
        print(person.name, ':', person.email)
        for phone in person.phones:
            print(phone.type, ':', phone.number)
        print()


if __name__ == '__main__':
    for i in range(10000):
        f = open('example', 'w')
        writeAddressBook(f)

        f = open('example', 'r')
        printAddressBook(f.read())

os.remove('example')