68 lines
1.8 KiB
Dart
68 lines
1.8 KiB
Dart
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import 'dart:io';
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import 'dart_tutorial/addressbook.pb.dart';
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/// This function fills in a Person message based on user input.
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Person promptForAddress() {
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final person = Person();
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print('Enter person ID: ');
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final input = stdin.readLineSync();
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person.id = int.parse(input);
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print('Enter name');
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person.name = stdin.readLineSync();
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print('Enter email address (blank for none) : ');
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final email = stdin.readLineSync();
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if (email.isNotEmpty) person.email = email;
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while (true) {
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print('Enter a phone number (or leave blank to finish): ');
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final number = stdin.readLineSync();
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if (number.isEmpty) break;
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final phoneNumber = Person_PhoneNumber()..number = number;
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print('Is this a mobile, home, or work phone? ');
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final type = stdin.readLineSync();
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switch (type) {
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case 'mobile':
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phoneNumber.type = Person_PhoneType.MOBILE;
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break;
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case 'home':
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phoneNumber.type = Person_PhoneType.HOME;
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break;
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case 'work':
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phoneNumber.type = Person_PhoneType.WORK;
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break;
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default:
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print('Unknown phone type. Using default.');
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}
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person.phones.add(phoneNumber);
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}
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return person;
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}
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/// Reads the entire address book from a file, adds one person based
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/// on user input, then writes it back out to the same file.
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void main(List<String> arguments) {
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if (arguments.length != 1) {
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print('Usage: add_person ADDRESS_BOOK_FILE');
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exit(-1);
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}
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final file = File(arguments.first);
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AddressBook addressBook;
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if (!file.existsSync()) {
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print('File not found. Creating new file.');
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addressBook = AddressBook();
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} else {
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addressBook = AddressBook.fromBuffer(file.readAsBytesSync());
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}
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addressBook.people.add(promptForAddress());
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file.writeAsBytes(addressBook.writeToBuffer());
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}
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