/// <summary>
/// Вуаштуы
/// </summary>
/// <param name="cmd"></param>
/// <param name="factory"></param>
static void DefineOperation(string cmd, FtpMethodFactory factory)
{
// Define abstract ftp method
// And add function to dictionary implements abstract ftp method
// with concrete ftp method from methods factory
AbstractFtpMethod method = factory.GetInstance(cmd);
// if command already exists then throws exception
if (commands.ContainsKey(cmd))
{
throw new ArgumentException(string.Format("Operation {0} already exists", cmd), "op");
}
commands.Add(cmd, method.SendRequest);
}
static void Main(string[] args)
{
Accessory.WelcomeMessageAndInitParameters();
string currentCommand;
// Creating factory of ftp methods
FtpMethodFactory factory = new FtpMethodFactory();
// Registers all implemented ftp methods
factory.Register <DirectoryList>("ls");
factory.Register <DownloadFile>("dl");
factory.Register <ChangeDirectory>("cd");
// Filling dictionary with commands
// First param is key=command, second param is func which processes this command
// Dictionary consists of delegate to provide flexibility. You can pass both simple
// one-line method like 'exit' and whole method of some class.
// There's three ways to add commands to dictionary: in constructor, by Add method
// of Dictionary class and by wrapper method DefineOperation
// In constructor...
commands = new Dictionary <string, Command>
{
{ "exit", (dummy) => Environment.Exit(0) },
};
// By using Dictionary.Add method
// Note: you needn't construct whole class, just code small simple lambda methods
commands.Add("help", (dummy) => {
using (StreamReader file = new StreamReader("../readme.txt"))
{
Console.WriteLine(file.ReadToEnd());
}
return;
});
// And by shell-method DefineOperation
string[] aliases = new string[] { "ls", "dl", "cd" };
// Adds aliases and its appropriate fucntions to commands dictionary
foreach (string alias in aliases)
{
DefineOperation(alias, factory);
}
Console.WriteLine();
commands["ls"]();
// Program main loop
// Processes commands until 'exit' found
do
{
Console.Write("{0}>", AbstractFtpMethod.FtpUri);
currentCommand = Console.ReadLine();
// Splt arguments to get them into function
string[] currentArguments = Accessory.ParseArguments(ref currentCommand);
// Invokes the appropriate func
if (commands.ContainsKey(currentCommand))
{
commands[currentCommand](currentArguments);
}
} while (currentCommand != "exit");
Console.ReadKey();
}
