1 // See README.txt for information and build instructions. 2 3 #include <iostream> 4 #include <fstream> 5 #include <string> 6 #include "addressbook.pb.h" 7 using namespace std; 8 9 // Iterates though all people in the AddressBook and prints info about them. 10 void ListPeople(const tutorial::AddressBook& address_book) { 11 for (int i = 0; i < address_book.person_size(); i++) { 12 const tutorial::Person& person = address_book.person(i); 13 14 cout << "Person ID: " << person.id() << endl; 15 cout << " Name: " << person.name() << endl; 16 if (person.has_email()) { 17 cout << " E-mail address: " << person.email() << endl; 18 } 19 20 for (int j = 0; j < person.phone_size(); j++) { 21 const tutorial::Person::PhoneNumber& phone_number = person.phone(j); 22 23 switch (phone_number.type()) { 24 case tutorial::Person::MOBILE: 25 cout << " Mobile phone #: "; 26 break; 27 case tutorial::Person::HOME: 28 cout << " Home phone #: "; 29 break; 30 case tutorial::Person::WORK: 31 cout << " Work phone #: "; 32 break; 33 } 34 cout << phone_number.number() << endl; 35 } 36 } 37 } 38 39 // Main function: Reads the entire address book from a file and prints all 40 // the information inside. 41 int main(int argc, char* argv[]) { 42 // Verify that the version of the library that we linked against is 43 // compatible with the version of the headers we compiled against. 44 GOOGLE_PROTOBUF_VERIFY_VERSION; 45 46 if (argc != 2) { 47 cerr << "Usage: " << argv[0] << " ADDRESS_BOOK_FILE" << endl; 48 return -1; 49 } 50 51 tutorial::AddressBook address_book; 52 53 { 54 // Read the existing address book. 55 fstream input(argv[1], ios::in | ios::binary); 56 if (!address_book.ParseFromIstream(&input)) { 57 cerr << "Failed to parse address book." << endl; 58 return -1; 59 } 60 } 61 62 ListPeople(address_book); 63 64 // Optional: Delete all global objects allocated by libprotobuf. 65 google::protobuf::ShutdownProtobufLibrary(); 66 67 return 0; 68 } 69
