private new bool RunCommand(ExecutionContext context)
{
switch (context.Command.State)
{
case ResultState.PromptForCommand:
context.Arguments = new List<string>();
context.IO.WriteLine("Which command do you want to execute?");
context.IO.WriteLine("");
var cancel = false;
var line = context.IO.ReadLine(() => cancel = true);
if (cancel) return false;
var num = ParsePlus(line);
if (num > -1 && context.Commands != null)
{
line = context.Commands.ElementAt(num - 1).CommandName;
context.IO.ClearLastLine();
context.IO.WriteLine("> " + line);
}
context.Arguments.Add(line);
context.IO.WriteLine("");
context.Command = context.Runner.Run(line);
break;
case ResultState.ShowHelpOverview:
context.Commands = context.Command.Result as List<CommandInfo>;
int ii = 1;
context.IO.WriteLine("Commands available:");
context.IO.WriteLine("");
context.IO.WriteLine("/help Command overview (this view)");
context.IO.WriteLine("/mode silent - No prompting");
context.IO.WriteLine("[ESC] Cancel command");
context.IO.WriteLine("");
context.Commands?.ForEach(cmd =>
{
context.IO.Write("[" + ii + "]" + string.Join(" ", new String(' ', 8 - ("[" + ii + "]").Length)) +
cmd.CommandName);
cmd?.Arguments.ToList().ForEach(arg =>
{
context.IO.Write(" /" + arg.Name + ":" +
(!string.IsNullOrWhiteSpace(arg.DefaultValue?.ToString())
? arg.DefaultValue?.ToString()
: "?"));
});
context.IO.WriteLine("");
ii += 1;
});
context.IO.WriteLine("");
context.IO.WriteLine("Type number or command name.");
context.IO.WriteLine("");
context.Command.State = ResultState.PromptForCommand;
break;
default:
return base.RunCommand(context);
}
//
return true;
}
/// <summary>
/// Runs the command in interactive mode.
/// </summary>
/// <param name="context">Execution context</param>
/// <returns></returns>
public void Run(ExecutionContext context)
{
bool keepon = true;
while (keepon)
{
keepon = RunCommand(context);
}
}
/// <summary>
/// Mode Execute silent.
/// </summary>
/// <param name="context">Execution context</param>
/// <returns></returns>
public void Run(ExecutionContext context)
{
context.IO.WriteLine("> {0}", string.Join(" ", context.Arguments));
context.IO.WriteLine("");
if (context.Command?.State == ResultState.Success)
{
RunCommand(context);
return;
}
context.IO.WriteLine("No success.");
}
/// <summary>
/// Run command in console.
/// </summary>
/// <param name="commands"></param>
/// <param name="args"></param>
/// <returns></returns>
public static void RunConsole(this NCommands commands, string[] args)
{
// Run
var arguments = args.ToList();
var runner = new CommandRunner(new CommandParser(commands.Context.Configuration.Notation), new CommandLookup(commands.Context.Configuration));
var result = runner.Run(string.Join(" ", arguments));
// Execution flow
var context = new ExecutionContext(ConsoleUtility.Instance, result, runner, arguments, commands.Context.Configuration);
var flowManager = new ExecutionFlowFactory().Get(context); // todo: make this injectable
flowManager.Run(context);
}
/// <summary>
/// Mode Execute. Not silent, missing parameters will be asked.
/// </summary>
/// <param name="context">Execution context</param>
/// <returns></returns>
public void Run(ExecutionContext context)
{
context.IO.WriteLine("> {0}", string.Join(" ", context.Arguments));
context.IO.WriteLine("");
bool keepon = true;
while (keepon)
{
keepon = RunCommand(context);
if (context.Command != null && context.Command.State == ResultState.PromptForCommand) return;
}
}
/// <summary>
/// Gets the appropriate execution flow.
/// </summary>
/// <param name="context">Execution context.</param>
/// <returns></returns>
public IExecutionFlow Get(ExecutionContext context)
{
// Silent mode
if (context.Arguments.Any(x => x.ToLower() == "/mode:silent"))
{
return new RunExecuteSilent();
}
// Interactive interactive
if (context.Command.State == ResultState.ShowHelpOverview)
{
return new RunInteractive();
}
// Execution mode
return new RunExecute();
}
/// <summary>
/// Runs the command.
/// </summary>
public bool RunCommand(ExecutionContext context)
{
switch (context.Command.State)
{
case ResultState.Success:
var res = context.Command.Result;
if (context.Command.Result is Task) res = context.Command.Result.Result;
if (res is IEnumerable && !(res is IEnumerable<char>))
{
foreach (var item in (res as IEnumerable))
{
context.IO.WriteLine(item?.ToString());
}
context.IO.WriteLine("");
}
else
{
context.IO.WriteLine(res?.ToString());
context.IO.WriteLine("");
}
context.Command.State = ResultState.PromptForCommand;
break;
case ResultState.MissingArguments:
context.IO.WriteLine(@"{0} arguments missing. ", context.Command.MissingArguments.Count());
context.IO.WriteLine("");
var cancelThisCommand = false;
var missingArguments = new List<string>();
for (int i = 0; i < context.Command.MissingArguments.Count(); i++)
{
var argument = context.Command.MissingArguments.ElementAt(i);
if (!string.IsNullOrWhiteSpace(argument.Description))
{
context.IO.WriteLine($"DescriptiOn: {argument.Description}");
context.IO.WriteLine($"Enter value for '{argument.Name}':");
}
else
{
context.IO.WriteLine($"Enter value for '{argument.Name}':");
}
var input = context.IO.ReadLine(() => cancelThisCommand = true);
if (cancelThisCommand)
{
context.Command.State = ResultState.PromptForCommand;
break;
}
missingArguments.Add("/" + argument.Name + ":" + input); // todo: ReRun (enteredValues) method on CommandRunner (Initial paramaters saved in a state)
context.IO.WriteLine("");
}
if (cancelThisCommand) break;
context.IO.WriteLine("");
context.Arguments.AddRange(missingArguments);
context.Command = context.Runner.Run(string.Join(" ", context.Arguments));
break;
case ResultState.UnknownCommand:
context.IO.WriteLine(@"Unknown command.");
context.IO.WriteLine("");
context.Command.State = ResultState.PromptForCommand;
break;
case ResultState.ParsingError:
context.IO.WriteLine(@"Parsing error.");
context.IO.WriteLine("");
context.Command.State = ResultState.PromptForCommand;
break;
case ResultState.ErrorWhileExecuting:
context.IO.WriteLine(@"Error while executing.");
context.IO.WriteLine("");
context.Command.State = ResultState.PromptForCommand;
break;
default:
throw new Exception(@"Error in NCommands. Unknown state: {currentState}");
}
//
return true;
}
/// <summary>
/// Runs the command.
/// </summary>
public bool RunCommand(ExecutionContext context)
{
switch (context.Command.State)
{
case ResultState.Success:
var res = context.Command.Result;
if (context.Command.Result is Task) res = context.Command.Result.Result;
if (res is IEnumerable && !(res is IEnumerable<char>))
{
foreach (var item in (res as IEnumerable))
{
context.IO.WriteLine(item?.ToString());
}
context.IO.WriteLine("");
}
else
{
context.IO.WriteLine(res?.ToString());
context.IO.WriteLine("");
}
context.Command.State = ResultState.PromptForCommand;
break;
case ResultState.MissingArguments:
context.IO.WriteLine(@"Arguments missing. ", context.Command.MissingArguments.Count());
var argumentsToPromptFor = new List<ArgumentInfo>();
argumentsToPromptFor.AddRange(context.Command.MissingArguments);
argumentsToPromptFor.AddRange(context.Command.MissingDefaultArguments);
for (int i = 0; i < argumentsToPromptFor.Count(); i++)
{
var argument = argumentsToPromptFor.ElementAt(i);
context.IO.WriteLine($"* {argument.Name}: {argument.Description}");
}
context.IO.WriteLine("");
var cancelThisCommand = false;
var missingArguments = new List<string>();
for (int i = 0; i < argumentsToPromptFor.Count(); i++)
{
var argument = argumentsToPromptFor.ElementAt(i);
context.IO.WriteLine($"Enter value for '{argument.Name}':");
var input = context.IO.ReadLine(() => cancelThisCommand = true);
if (cancelThisCommand)
{
context.Command.State = ResultState.PromptForCommand;
break;
}
var seperator1 = context.Configuration.Notation == ParserNotation.Windows ? '/' : '-';
var seperator2 = context.Configuration.Notation == ParserNotation.Windows ? ':' : '=';
missingArguments.Add(seperator1 + argument.Name + seperator2 + input); // todo: ReRun (enteredValues) method on CommandRunner (Initial paramaters saved in a state)
context.IO.WriteLine("");
}
if (cancelThisCommand) break;
context.IO.WriteLine("");
context.Arguments.AddRange(missingArguments);
context.Command = context.Runner.Run(string.Join(" ", context.Arguments));
break;
case ResultState.UnknownCommand:
context.IO.WriteLine(@"Unknown command.");
context.IO.WriteLine("");
context.Command.State = ResultState.PromptForCommand;
break;
case ResultState.ParsingError:
context.IO.WriteLine(@"Parsing error.");
context.IO.WriteLine("");
context.Command.State = ResultState.PromptForCommand;
break;
case ResultState.ErrorWhileExecuting:
context.IO.WriteLine(@"Error while executing.");
context.IO.WriteLine("");
if (context.Configuration.DisplayExceptionDetails)
{
context.IO.WriteLine(string.Join(Environment.NewLine, context.Command.Exceptions.Select(x => x.Message + Environment.NewLine + x.StackTrace)));
}
context.IO.WriteLine("");
if (context.Configuration.TraceExceptions)
{
Trace.WriteLine(context.Command.Exceptions, "Exceptions");
}
context.Command.State = ResultState.PromptForCommand;
break;
case ResultState.Canceled:
return false;
default:
throw new Exception(@"Error in NCommands. Unknown state: {currentState}");
}
//
return true;
}