private (bool Exists, List <string> Values) GetValues(UriString uri)
{
if (uri.Query.TryGetValue(CommandArgumentQueryStringKeys.Position, out var p))
{
var position = int.Parse((string)p);
var elementAtOrDefault = _commandLine.AnonymousValues().ElementAtOrDefault(position);
var exists = !(elementAtOrDefault is null);
return
(
exists,
exists
? new List <string> {
elementAtOrDefault
}
: new List <string>()
);
}
else
{
var names = uri.Path.Decoded.ToString().Split('/');
var id = new Identifier(names.Select(SoftString.Create));
return
(_commandLine.Contains(id)
? (true, _commandLine[id].ToList())
: (false, new List <string>()));
}
}
//[NotNull, ItemNotNull]
//public static IEnumerable<string> ArgumentValues([NotNull] this ICommandLine commandLine, int? position, Identifier id)
//{
// if (commandLine == null) throw new ArgumentNullException(nameof(commandLine));
// return
// position.HasValue
// ? commandLine.AnonymousValues().Skip(position.Value).Take(1)
// : commandLine[id];
//}
//[ContractAnnotation("values: notnull")]
public static bool TryGetArgumentValues([NotNull] this ICommandLine commandLine, Identifier id, int?position, [CanBeNull, ItemNotNull] out IList <string> values)
{
if (commandLine == null)
{
throw new ArgumentNullException(nameof(commandLine));
}
if (commandLine.Contains(id))
{
values = commandLine[id].ToList();
return(true);
}
if (position.HasValue && position.Value <= commandLine.AnonymousValues().Count() - 1)
{
values = new[] { commandLine.AnonymousValues().ElementAtOrDefault(position.Value) };
return(true);
}
values = default;
return(false);
}
public static Identifier CommandId([NotNull] this ICommandLine commandLine)
{
if (commandLine == null)
{
throw new ArgumentNullException(nameof(commandLine));
}
// Command-name is the first anonymous argument.
return
(commandLine
.AnonymousValues()
.FirstOrDefault()
?? throw DynamicException.Factory.CreateDynamicException(
$"CommandNameNotFound{nameof(Exception)}",
$"Command line '{commandLine}' does not contain a command name."
));
}