public CommandMethodUsagePrinter(string name, object instance, string[] aliases)
{
var provider = CommandDescriptor.GetUsageDescriptionProvider(instance.GetType());
this.Name = name ?? throw new ArgumentNullException(nameof(name));
this.Instance = instance ?? throw new ArgumentNullException(nameof(instance));
this.Aliases = aliases ?? throw new ArgumentNullException(nameof(aliases));
this.Summary = provider.GetSummary(instance);
this.Description = provider.GetDescription(instance);
this.Example = provider.GetExample(instance);
}
protected virtual void PrintUsage(CommandUsage usage)
{
var descriptors = CommandDescriptor.GetMemberDescriptors(this);
var printer = new CommandMemberUsagePrinter(this.ExecutionName, this, this.Aliases)
{
Usage = usage,
IsAnsiSupported = this.IsAnsiSupported
};
printer.Print(this.Out, descriptors.ToArray());
}
public void Invoke(string[] args)
{
try
{
var first = args.FirstOrDefault() ?? string.Empty;
var rest = args.Count() > 0 ? args.Skip(1).ToArray() : new string[] { };
var instance = this.Instance;
if (instance is ICommandHierarchy hierarchy && hierarchy.Commands.ContainsKey(first) == true)
{
var command = hierarchy.Commands[first];
var parser = new CommandLineParser(first, command);
parser.Parse(rest);
if (command is IExecutable executable1)
{
this.Invoke(executable1);
}
else if (command is IExecutableAsync executable2)
{
throw new InvalidOperationException(Resources.Exception_InvokeAsyncInstead);
}
}
else if (instance is IExecutable executable1)
{
this.Parse(args);
this.Invoke(executable1);
}
else if (instance is IExecutableAsync executable2)
{
this.Parse(args);
throw new InvalidOperationException(Resources.Exception_InvokeAsyncInstead);
}
else if (CommandDescriptor.GetMethodDescriptor(instance.GetType(), first) is CommandMethodDescriptor descriptor)
{
if (descriptor.IsAsync == true)
{
throw new InvalidOperationException(Resources.Exception_InvokeAsyncInstead);
}
else
{
this.Invoke(descriptor, instance, rest);
}
}
}
private string[] GetCompletion(ICommand item, string[] args, string find)
{
if (item is ICommandCompletor completor)
{
var members = CommandDescriptor.GetMemberDescriptors(item);
var context = CommandCompletionContext.Create(item, members, args, find);
if (context is CommandCompletionContext completionContext)
{
var completion = completor.GetCompletions(completionContext);
if (completion != null)
{
return(completion);
}
}
else if (context is string[] completions)
{
return(completions);
}
}
return(null);
}
protected CommandMemberDescriptor GetStaticDescriptor(Type type, string propertyName)
{
return(CommandDescriptor.GetStaticMemberDescriptors(type)[propertyName]);
}
protected CommandMemberDescriptor GetDescriptor(string propertyName)
{
return(CommandDescriptor.GetMemberDescriptors(this)[propertyName]);
}