/// <summary>
/// Set the error callback to print also the helper
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="p"></param>
/// <param name="cliInfo"></param>
/// <param name="output"></param>
/// <returns></returns>
public static Parser PrintingHelperOnErrorAndQuit <T>(this Parser p, ICLIInfo cliInfo, Action <string> output) where T : ICLIArguments
{
if (p == null)
{
throw new ArgumentNullException(nameof(p));
}
if (cliInfo == null)
{
throw new ArgumentNullException(nameof(cliInfo));
}
if (String.IsNullOrEmpty(cliInfo.Alias))
{
throw new ArgumentNullException(nameof(cliInfo));
}
if (output == null)
{
throw new ArgumentNullException(nameof(output));
}
p.OnError(err =>
{
output("**********************************| Unexpected Error during argument parsing |***************************************");
output(err.Message);
output(err.StackTrace);
output("");
output(" Please, run exe without params to see the helper");
UsagePrinterHelper.PrintOnConsoleFor <T>(cliInfo.Alias);
Environment.Exit(-2);
});
return(p);
}
static void Main(string[] args)
{
try
{
// configure parser
var info = new CLIInfo();
var parser = ParserHelper.DefaultParser()
.UsingThisVersionInOutput(info, Console.WriteLine)
.PrintingHelperOnErrorAndQuit <TestArguments>(info, Console.WriteLine);
// try to parse arguments; if thorws errors, the program quits
var options = parser.Parse <TestArguments>(args);
Console.WriteLine(options != null ? "Options succesfully parsed" : "Options is currently null");
UsagePrinterHelper.PrintOnConsoleFor <TestArguments>(info.Alias);
Environment.Exit(0);
}
catch (Exception ex)
{
Console.WriteLine("*****************************************************************************");
Console.WriteLine(ex.Message);
Console.WriteLine(ex.StackTrace);
Environment.Exit(1);
}
}
