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using System;
namespace Google.ProtocolBuffers.Examples.AddressBook
{
/// <summary>
/// Entry point. Repeatedly prompts user for an action to take, delegating actual behaviour
/// to individual actions. Each action has its own Main method, so that it can be used as an
/// invidual complete program.
/// </summary>
class Program {
static int Main(string[] args) {
if (args.Length > 1) {
Console.Error.WriteLine("Usage: AddressBook [file]");
Console.Error.WriteLine("If the filename isn't specified, \"addressbook.data\" is used instead.");
return 1;
}
string addressBookFile = args.Length > 0 ? args[0] : "addressbook.data";
bool stopping = false;
while (!stopping) {
Console.WriteLine("Options:");
Console.WriteLine(" L: List contents");
Console.WriteLine(" A: Add new person");
Console.WriteLine(" Q: Quit");
Console.Write("Action? ");
Console.Out.Flush();
char choice = Console.ReadKey().KeyChar;
Console.WriteLine();
try {
switch (choice) {
case 'A':
case 'a':
AddPerson.Main(new string[] { addressBookFile });
break;
case 'L':
case 'l':
ListPeople.Main(new string[] { addressBookFile });
break;
case 'Q':
case 'q':
stopping = true;
break;
default:
Console.WriteLine("Unknown option: {0}", choice);
break;
}
} catch (Exception e) {
Console.WriteLine("Exception executing action: {0}", e);
}
Console.WriteLine();
}
return 0;
}
}
}
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