/// <summary>
/// Extract the target to be called and its arguments from command line arguments
/// </summary>
/// <param name="arguments">all command line arguments (required for error display)</param>
/// <param name="options">parsed options</param>
/// <returns></returns>
static (MethodInfo target, string[] arguments) ParseCommandLineTarget(string[] arguments, Options options)
{
var targetAndArguments = options.TargetAndArguments;
var targets = options.Targets;
if (targetAndArguments.Length == 0)
{
try
{
return(GetDefaultTarget(targets), new string[] { });
}
catch (Exception e)
{
throw new ParseException(arguments, -1, e);
}
}
var candidates = HelpText.PublicTargets(targets.GetType());
var targetName = targetAndArguments[0];
var targetArguments = targetAndArguments.Skip(1).ToArray();
try
{
var target = candidates.FindByName(
_ => GetOptParser.GetLongOptionNameForMember(_.Name),
targetName,
"targets"
);
return(target, targetArguments);
}
catch (ArgumentOutOfRangeException e)
{
throw new ParseException(arguments, Array.IndexOf(arguments, targetName), e);
}
}
private static string Syntax(MethodInfo method)
{
return(new[] { GetOptParser.GetLongOptionNameForMember(method.Name), }
.Concat(method.GetParameters().Select(_ => $"<{_.Name}>"))
.Join(" "));
}