public CmdLineArgDefinitionBuilder Arg(string name)
{
if (string.IsNullOrWhiteSpace(name))
throw new ArgumentException();
if (_args.Any(x => x.Name.Equals(name, StringComparison.CurrentCultureIgnoreCase)))
throw new InvalidOperationException();
if (_args.Any(x => x.IsOptional || x.IsParams))
throw new InvalidOperationException();
var definition = new CmdLineArgDefinition(name);
_args.Add(definition);
return new CmdLineArgDefinitionBuilder(definition);
}
public void ShouldThrowOnFailingArgValue()
{
var definition = new CmdLineArgDefinition("arg")
{
Validator = values => values.Single() == "pass"
? null
: "fail"
};
Should.Throw<ParserException>(() => definition.Validate(new[] { "foo" }))
.Message.Split(new[] { Environment.NewLine }, StringSplitOptions.None)
.ShouldBe(new[]
{
"Invalid arg 'arg':",
"fail"
});
}
private static void ParseArg(string s, CmdLineArgDefinition argDefinition, ParserContext context, Queue<string> queue)
{
var strings = argDefinition.IsParams
? new[] { s }.Concat(TakeWhileNotPrefixed(queue, context.Prefixes)).ToArray()
: new[] { s };
var validationError = argDefinition.Validator(strings);
if (!string.IsNullOrEmpty(validationError))
{
var message = new StringBuilder()
.AppendFormat("Invalid arg {0}:", argDefinition.DisplayName ?? argDefinition.Name)
.AppendLine()
.AppendLine(validationError)
.ToString();
throw new ParserException(message);
}
strings.Each(x => context.Input.Args.Add(argDefinition.Name, x));
}