static void Main(string[] args)
{
var shell = new LiteShell(null);
var input = new InputCommand();
var display = new Display();
display.TextWriters.Add(Console.Out);
// show welcome message
display.WriteWelcome();
// if has a argument, its database file - try open
if (args.Length > 0)
{
try
{
shell.Database = new LiteDatabase(args[0]);
}
catch (Exception ex)
{
display.WriteError(ex.Message);
}
}
while (true)
{
// read next command from user
var cmd = input.ReadCommand();
if (string.IsNullOrEmpty(cmd))
{
continue;
}
try
{
var isConsoleCommand = ConsoleCommand.TryExecute(cmd, shell, display, input);
if (isConsoleCommand == false)
{
var result = shell.Run(cmd);
display.WriteResult(result);
}
}
catch (Exception ex)
{
display.WriteError(ex.Message);
}
}
}
public static void Start(InputCommand input, Display display)
{
IShellEngine engine = null;
display.TextWriters.Add(Console.Out);
// show welcome message
display.WriteWelcome();
while (input.Running)
{
// read next command from user or queue
var cmd = input.ReadCommand();
if (string.IsNullOrEmpty(cmd))
{
continue;
}
try
{
var isConsoleCommand = ConsoleCommand.TryExecute(cmd, ref engine, display, input);
if (isConsoleCommand == false)
{
if (engine == null)
{
throw ShellExpcetion.NoDatabase();
}
engine.Run(cmd, display);
}
}
catch (Exception ex)
{
display.WriteError(ex.Message);
}
}
}