private static CommandLineBuilder UseParseErrorReporting(this CommandLineBuilder builder, string commandName)
{
builder.AddMiddleware(async(context, next) =>
{
CommandResult currentCommandResult = context.ParseResult.CommandResult;
while (currentCommandResult != null && currentCommandResult.Command.Name != commandName)
{
currentCommandResult = currentCommandResult.Parent as CommandResult;
}
if (currentCommandResult == null || !context.ParseResult.Errors.Any())
{
//different command was launched or no errors
await next(context).ConfigureAwait(false);
}
else
{
context.ExitCode = 127; //parse error
//TODO: discuss to make coloring extensions public
//context.Console.ResetTerminalForegroundColor();
//context.Console.SetTerminalForegroundRed();
foreach (var error in context.ParseResult.Errors)
{
context.Console.Error.WriteLine(error.Message);
}
context.Console.Error.WriteLine();
//context.Console.ResetTerminalForegroundColor();
var output = context.Console.Out.CreateTextWriter();
var helpContext = new HelpContext(context.HelpBuilder,
context.ParseResult.CommandResult.Command,
output,
context.ParseResult);
context.HelpBuilder
.Write(helpContext);
}
}, MiddlewareOrder.ErrorReporting);
return(builder);
}
protected override void VisitCommandResult(CommandResult commandResult)
{
CommandResults.Add(commandResult.Command, commandResult);
}
