Revert https://codereview.chromium.org/1291903002 (protobuf roll).

third_party/protobuf/csharp/src/AddressBook/AddPerson.cs

-#region Copyright notice and license
-// Protocol Buffers - Google's data interchange format
-// Copyright 2008 Google Inc.  All rights reserved.
-// https://developers.google.com/protocol-buffers/
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-#endregion
-
-using System;
-using System.IO;
-
-namespace Google.Protobuf.Examples.AddressBook
-{
-    internal class AddPerson
-    {
-        /// <summary>
-        /// Builds a person based on user input
-        /// </summary>
-        private static Person PromptForAddress(TextReader input, TextWriter output)
-        {
-            Person person = new Person();
-
-            output.Write("Enter person ID: ");
-            person.Id = int.Parse(input.ReadLine());
-
-            output.Write("Enter name: ");
-            person.Name = input.ReadLine();
-
-            output.Write("Enter email address (blank for none): ");
-            string email = input.ReadLine();
-            if (email.Length > 0)
-            {
-                person.Email = email;
-            }
-
-            while (true)
-            {
-                output.Write("Enter a phone number (or leave blank to finish): ");
-                string number = input.ReadLine();
-                if (number.Length == 0)
-                {
-                    break;
-                }
-
-                Person.Types.PhoneNumber phoneNumber = new Person.Types.PhoneNumber { Number = number };
-
-                output.Write("Is this a mobile, home, or work phone? ");
-                String type = input.ReadLine();
-                switch (type)
-                {
-                    case "mobile":
-                        phoneNumber.Type = Person.Types.PhoneType.MOBILE;
-                        break;
-                    case "home":
-                        phoneNumber.Type = Person.Types.PhoneType.HOME;
-                        break;
-                    case "work":
-                        phoneNumber.Type = Person.Types.PhoneType.WORK;
-                        break;
-                    default:
-                        output.Write("Unknown phone type. Using default.");
-                        break;
-                }
-
-                person.Phones.Add(phoneNumber);
-            }
-            return person;
-        }
-
-        /// <summary>
-        /// Entry point - loads an existing addressbook or creates a new one,
-        /// then writes it back to the file.
-        /// </summary>
-        public static int Main(string[] args)
-        {
-            if (args.Length != 1)
-            {
-                Console.Error.WriteLine("Usage:  AddPerson ADDRESS_BOOK_FILE");
-                return -1;
-            }
-
-            AddressBook addressBook;
-
-            if (File.Exists(args[0]))
-            {
-                using (Stream file = File.OpenRead(args[0]))
-                {
-                    addressBook = AddressBook.Parser.ParseFrom(file);
-                }
-            }
-            else
-            {
-                Console.WriteLine("{0}: File not found. Creating a new file.", args[0]);
-                addressBook = new AddressBook();
-            }
-
-            // Add an address.
-            addressBook.People.Add(PromptForAddress(Console.In, Console.Out));
-
-            // Write the new address book back to disk.
-            using (Stream output = File.OpenWrite(args[0]))
-            {
-                addressBook.WriteTo(output);
-            }
-            return 0;
-        }
-    }
-}