ParameterInfo ICommandExecutorImpl.SetValueParameter(string key, CommandAttribute command, SortedList <int, object> parameters, ParameterInfo lastParameter)
{
if (_impl.TryAddToLastParameter(lastParameter, key, parameters))
{
return(lastParameter);
}
var parameter = command.Values.Select(x => x.Parameter).FirstOrDefault(x => !parameters.ContainsKey(x.Position));
if (parameter == null)
{
throw new BadCommandException(command, $"Too many values");
}
var value = _valueConverter.GetValue(key, parameter.ParameterType);
parameters.Add(parameter.Position, value);
return(parameter);
}
async Task ICommandExecutorImpl.ExecuteCommandAsync(CommandAttribute command, IEnumerator <CommandPart> commandParts, GlobalOptionsWrapper globalOptions)
{
var parameters = new SortedList <int, object>();
ParameterInfo lastParameter = null;
while (commandParts.MoveNext())
{
var key = _parser.GetString(commandParts.Current.Key);
if (commandParts.Current.IsArgument && _commandHelper.TryShowHelpOrVersion(commandParts.Current, command, key, _options, globalOptions))
{
return;
}
if (commandParts.Current.IsArgument)
{
if (_impl.TrySetGlobalOption(key, commandParts.Current, globalOptions))
{
continue;
}
lastParameter = _impl.SetOptionParameter(key, commandParts.Current, command, parameters);
}
else
{
lastParameter = _impl.SetValueParameter(key, command, parameters, lastParameter);
}
}
_impl.AddDefaultValues(command, parameters);
if (globalOptions.GlobalOptions != null && command.GlobalOptionsParameter != null)
{
parameters[command.GlobalOptionsParameter.Position] = globalOptions.GlobalOptions;
}
await _impl.ExecuteActualCommandAsync(command, parameters);
return;
}
void ICommandHelper.WriteCommandHelp(CommandAttribute command, ICommandExecutorOptions options, GlobalOptionsWrapper globalOptions)
{
Console.Write($"Usage: {command.GetName()}");
if (options.ValuesFirst)
{
foreach (var value in command.Values)
{
Console.Write($" {{{value.Parameter.Name}}}");
}
}
if (command.Options.Count > 0)
{
Console.Write(" [Options]");
}
if (!options.ValuesFirst)
{
foreach (var value in command.Values)
{
Console.Write($" {{{value.Parameter.Name}}}");
}
}
Console.WriteLine();
Console.WriteLine();
Console.WriteLine(command.HelpText);
if (command.Values.Count > 0)
{
Console.WriteLine();
Console.WriteLine("Values:");
foreach (var value in command.Values)
{
Console.WriteLine($" {value.GetName(),-20}{value.HelpText}");
}
}
if (command.Options.Count == 0)
{
return;
}
Console.WriteLine();
Console.WriteLine("Options:");
var written = new HashSet <OptionAttribute>();
foreach (var option in command.Options)
{
if (written.Contains(option.Value))
{
continue;
}
Console.Write(" ");
string name = " ";
if (option.Value.ShortForm != '\0')
{
name = " -" + option.Value.ShortForm;
}
if (option.Value.LongForm != null)
{
name += " --" + option.Value.LongForm + (option.Value.Parameter.ParameterType == typeof(bool) ? "" : "=<value>");
}
var helpText = option.Value.HelpText;
if (option.Value.Parameter.ParameterType.IsArray)
{
helpText = "(Array) " + helpText;
}
Console.WriteLine(name.PadRight(30, ' ') + helpText);
written.Add(option.Value);
}
Console.WriteLine();
}
public bool TryGetCommandAttribute(MethodInfo methodInfo, out CommandAttribute commandAttribute)
{
commandAttribute = methodInfo.GetCustomAttribute <CommandAttribute>();
return(commandAttribute != null);
}
ParameterInfo ICommandExecutorImpl.SetOptionParameter(string key, CommandPart commandPart, CommandAttribute command, SortedList <int, object> parameters)
{
if (!command.Options.TryGetValue(key, out var option))
{
throw new BadCommandException(command, $"Unknown option `{key}`");
}
var valueString = _parser.GetString(commandPart.Value);
var value = _valueConverter.GetValue(valueString, option.Parameter.ParameterType);
if (parameters.TryGetValue(option.Parameter.Position, out var existingValue))
{
if (!option.Parameter.ParameterType.IsArray)
{
throw new BadCommandException(command, $"Option `{key}` specified too many times");
}
parameters[option.Parameter.Position] = ((Array)existingValue).ExtendAndAddArray((Array)value);
}
else
{
parameters.Add(option.Parameter.Position, value);
}
return(option.Parameter);
}
public BadCommandException(CommandAttribute command, string badCommand)
: base($"Malformed or missing command {badCommand}")
{
Command = command;
BadCommand = badCommand;
}
