public static void Start(InputCommand input, Display display)
{
var commands = new List <IShellCommand>();
var env = new Env {
Input = input, Display = display
};
// register commands
RegisterCommands(commands);
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 s = new StringScanner(cmd);
var found = false;
// first test all shell app commands
foreach (var command in commands)
{
if (!command.IsCommand(s))
{
continue;
}
command.Execute(s, env, out var a, out var b);
found = true;
break;
}
// if not found, try database command
if (!found)
{
display.WriteResult(env.Engine.Run(cmd));
}
}
catch (Exception ex)
{
display.WriteError(ex);
}
}
}
static void Main(string[] args)
{
LiteDatabase db = 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
{
db = 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, ref db, display, input);
if (isConsoleCommand == false)
{
if (db == null)
{
throw LiteException.NoDatabase();
}
var result = db.Run(cmd);
display.WriteResult(result);
}
}
catch (Exception ex)
{
display.WriteError(ex.Message);
}
}
}
static void Main(string[] args)
{
LiteDatabase db = 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
{
db = 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, ref db, display, input);
if (isConsoleCommand == false)
{
if(db == null) throw LiteException.NoDatabase();
var result = db.Run(cmd);
display.WriteResult(result);
}
}
catch (Exception ex)
{
display.WriteError(ex.Message);
}
}
}
public static void Start(InputCommand input, Display display)
{
var env = new Env {
Input = input, Display = display
};
// show welcome message
display.WriteWelcome();
Console.CancelKeyPress += (o, e) => { e.Cancel = true; env.Running = false; };
while (input.Running)
{
// read next command from user or queue
var cmd = input.ReadCommand();
if (string.IsNullOrEmpty(cmd))
{
continue;
}
try
{
var scmd = GetCommand(cmd);
if (scmd != null)
{
scmd(env);
continue;
}
// if string is not a shell command, try execute as sql command
if (env.Database == null)
{
throw new Exception("Database not connected");
}
env.Running = true;
display.WriteResult(env.Database.Execute(cmd), env);
}
catch (Exception ex)
{
display.WriteError(ex);
}
}
}
