/// <summary>
/// Run a shell command in current database. Returns a BsonValue as result
/// </summary>
public BsonValue RunCommand(string command)
{
if (_shell == null)
{
_shell = new LiteShell(this);
}
return _shell.Run(command);
}
static void Main(string[] args)
{
var shell = new LiteShell();
var input = new InputCommand();
shell.RegisterAll();
shell.Display.TextWriters.Add(Console.Out);
// show welcome message
shell.Display.WriteWelcome();
// if has a argument, its database file - try open
if (args.Length > 0)
{
try
{
shell.Engine = new LiteEngine(args[0]);
}
catch (Exception ex)
{
shell.Display.WriteError(ex.Message);
}
}
while (true)
{
// read next command from user
var cmd = input.ReadCommand();
if (string.IsNullOrEmpty(cmd))
{
continue;
}
try
{
if (cmd.StartsWith("open "))
{
if (shell.Engine != null)
{
shell.Engine.Dispose();
}
shell.Engine = new LiteEngine(cmd.Substring(5));
}
else
{
shell.Run(cmd);
}
}
catch (Exception ex)
{
shell.Display.WriteError(ex.Message);
}
}
}
/// <summary>
/// Run a command shell formating $0, $1 to JSON string args item index
/// </summary>
public BsonValue Run(string command, params BsonValue[] args)
{
var shell = new LiteShell();
var cmd = Regex.Replace(command, @"\$(\d+)", (k) =>
{
var index = Convert.ToInt32(k.Groups[1].Value);
return JsonSerializer.Serialize(args[index]);
});
return shell.Run(_engine.Value, cmd);
}
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);
}
}
}
/// <summary>
/// If command is a console command, execute and returns true - if not, just returns false
/// </summary>
public static bool TryExecute(string command, LiteShell shell, Display display, InputCommand input)
{
var s = new StringScanner(command);
foreach (var cmd in Commands)
{
if (cmd.IsCommand(s))
{
cmd.Execute(shell, s, display, input);
return(true);
}
}
return(false);
}
/// <summary>
/// If command is a console command, execute and returns true - if not, just returns false
/// </summary>
public static bool TryExecute(string command, LiteShell shell, Display display, InputCommand input)
{
var s = new StringScanner(command);
foreach (var cmd in Commands)
{
if (cmd.IsCommand(s))
{
cmd.Execute(shell, s, display, input);
return true;
}
}
return false;
}
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);
}
}
}
/// <summary>
/// Run a command shell
/// </summary>
public BsonValue Run(string command)
{
var shell = new LiteShell();
return shell.Run(_engine.Value, command);
}
public abstract void Execute(LiteShell shell, StringScanner s, Display display, InputCommand input);
public abstract void Execute(LiteShell shell, StringScanner s, Display display, InputCommand input);