protobuf/examples/list_people.cc
Feng Xiao 74bf45f379 Add bazel support for examples.
The example utilizes native bazel rules (proto_library, cc_proto_library,
java_proto_library, java_lite_proto_library) to show how easy it is to
build protobuf with bazel's native support. It also makes use of well
known types which was not possible until the latest bazel 0.5.4 release
and https://github.com/google/protobuf/pull/3594 .
2017-09-08 16:01:49 -07:00

80 lines
2.2 KiB
C++

// See README.txt for information and build instructions.
#include <fstream>
#include <google/protobuf/util/time_util.h>
#include <iostream>
#include <string>
#include "addressbook.pb.h"
using namespace std;
using google::protobuf::util::TimeUtil;
// Iterates though all people in the AddressBook and prints info about them.
void ListPeople(const tutorial::AddressBook& address_book) {
for (int i = 0; i < address_book.people_size(); i++) {
const tutorial::Person& person = address_book.people(i);
cout << "Person ID: " << person.id() << endl;
cout << " Name: " << person.name() << endl;
if (person.email() != "") {
cout << " E-mail address: " << person.email() << endl;
}
for (int j = 0; j < person.phones_size(); j++) {
const tutorial::Person::PhoneNumber& phone_number = person.phones(j);
switch (phone_number.type()) {
case tutorial::Person::MOBILE:
cout << " Mobile phone #: ";
break;
case tutorial::Person::HOME:
cout << " Home phone #: ";
break;
case tutorial::Person::WORK:
cout << " Work phone #: ";
break;
default:
cout << " Unknown phone #: ";
break;
}
cout << phone_number.number() << endl;
}
if (person.has_last_updated()) {
cout << " Updated: " << TimeUtil::ToString(person.last_updated()) << endl;
}
}
}
// Main function: Reads the entire address book from a file and prints all
// the information inside.
int main(int argc, char* argv[]) {
// Verify that the version of the library that we linked against is
// compatible with the version of the headers we compiled against.
GOOGLE_PROTOBUF_VERIFY_VERSION;
if (argc != 2) {
cerr << "Usage: " << argv[0] << " ADDRESS_BOOK_FILE" << endl;
return -1;
}
tutorial::AddressBook address_book;
{
// Read the existing address book.
fstream input(argv[1], ios::in | ios::binary);
if (!address_book.ParseFromIstream(&input)) {
cerr << "Failed to parse address book." << endl;
return -1;
}
}
ListPeople(address_book);
// Optional: Delete all global objects allocated by libprotobuf.
google::protobuf::ShutdownProtobufLibrary();
return 0;
}