Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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70 lines
1.8 KiB
70 lines
1.8 KiB
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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Person person = Person(); |
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print('Enter person ID: '); |
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String 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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String email = stdin.readLineSync(); |
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if (email.isNotEmpty) { |
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person.email = email; |
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} |
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while (true) { |
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print('Enter a phone number (or leave blank to finish): '); |
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String number = stdin.readLineSync(); |
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if (number.isEmpty) break; |
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Person_PhoneNumber phoneNumber = Person_PhoneNumber(); |
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phoneNumber.number = number; |
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print('Is this a mobile, home, or work phone? '); |
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String 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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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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File 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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