private static IRenderable CreatePrettyMessage(string arguments, CommandTreeToken token, string message, string details)
{
var composer = new RenderableComposer();
var position = token?.Position ?? 0;
var value = token?.Representation ?? arguments;
// Header
composer.LineBreak();
composer.Color(ConsoleColor.Red, error => error.Text("Error:"));
composer.Space().Text(message);
composer.LineBreak();
// Template
composer.LineBreak();
composer.Spaces(7).Text(arguments);
// Error
composer.LineBreak();
composer.Spaces(7).Spaces(position);
composer.Color(ConsoleColor.Red, error =>
{
error.Repeat('^', value.Length);
error.Text($" {details.TrimEnd('.')}");
error.LineBreak();
});
composer.LineBreak();
return(composer);
}
private static void WriteExamples(RenderableComposer composer, CommandModel model, CommandInfo?command)
{
var maxExamples = int.MaxValue;
var examples = command?.Examples ?? model.Examples ?? new List <string[]>();
if (examples.Count == 0)
{
// Since we're not checking direct examples,
// make sure that we limit the number of examples.
maxExamples = 5;
// Get the current root command.
var root = command ?? (ICommandContainer)model;
var queue = new Queue <ICommandContainer>(new[] { root });
// Traverse the command tree and look for examples.
// As soon as a node contains commands, bail.
while (queue.Count > 0)
{
var current = queue.Dequeue();
foreach (var cmd in current.Commands)
{
if (cmd.Examples.Count > 0)
{
examples.AddRange(cmd.Examples);
}
queue.Enqueue(cmd);
}
if (examples.Count >= maxExamples)
{
break;
}
}
}
if (examples.Count > 0)
{
var prefix = model.ApplicationName ?? Path.GetFileName(Assembly.GetEntryAssembly()?.Location);
composer.Color(ConsoleColor.Yellow, c => c.Text("EXAMPLES:")).LineBreak();
for (int index = 0; index < Math.Min(maxExamples, examples.Count); index++)
{
var args = string.Join(" ", examples[index]);
composer.Tab().Text(prefix);
composer.Space().Color(ConsoleColor.DarkGray, c => c.Text(args));
composer.LineBreak();
}
composer.LineBreak();
}
}
private static IRenderable CreatePrettyMessage(string template, TemplateToken?token, string message, string details)
{
var composer = new RenderableComposer();
var position = token?.Position ?? 0;
var value = token?.Representation ?? template;
// Header
composer.LineBreak();
composer.Color(ConsoleColor.Red, error => error.Text("Error:"));
composer.Space().Text("An error occured when parsing template.");
composer.LineBreak();
composer.Spaces(7).Color(ConsoleColor.Yellow, error => error.Text(message));
composer.LineBreak();
if (string.IsNullOrWhiteSpace(template))
{
// Error
composer.LineBreak();
composer.Color(ConsoleColor.Red, error => error.Text(message));
composer.LineBreak();
}
else
{
// Template
composer.LineBreak();
composer.Spaces(7).Text(template);
// Error
composer.LineBreak();
composer.Spaces(7).Spaces(position);
composer.Color(ConsoleColor.Red, error =>
{
error.Repeat('^', value.Length);
error.Text($" {details.TrimEnd('.')}");
error.LineBreak();
});
}
composer.LineBreak();
return(composer);
}
private static void WriteUsage(RenderableComposer composer, CommandModel model, CommandInfo command)
{
var parameters = new Stack <IRenderable>();
if (command == null)
{
parameters.Push(new ColorElement(ConsoleColor.Cyan, new TextElement("<COMMAND>")));
parameters.Push(new ColorElement(ConsoleColor.DarkGray, new TextElement("[OPTIONS]")));
}
else
{
var current = command;
if (command.IsBranch)
{
parameters.Push(new ColorElement(ConsoleColor.Cyan, new TextElement("<COMMAND>")));
}
while (current != null)
{
var builder = new BlockElement();
if (!current.IsDefaultCommand)
{
builder.Append(new TextElement(current.Name));
}
if (current.Parameters.OfType <CommandArgument>().Any())
{
var isCurrent = current == command;
if (isCurrent)
{
foreach (var argument in current.Parameters.OfType <CommandArgument>()
.Where(a => a.Required).OrderBy(a => a.Position).ToArray())
{
var text = new TextElement($" <{argument.Value}>");
builder.Append(new ColorElement(ConsoleColor.Cyan, text));
}
}
var optionalArguments = current.Parameters.OfType <CommandArgument>().Where(x => !x.Required).ToArray();
if (optionalArguments.Length > 0 || !isCurrent)
{
foreach (var optionalArgument in optionalArguments)
{
var text = new TextElement($" [{optionalArgument.Value}]");
builder.Append(new ColorElement(ConsoleColor.Gray, text));
}
}
}
if (current == command)
{
builder.Append(new ColorElement(ConsoleColor.DarkGray, new TextElement(" [OPTIONS]")));
}
parameters.Push(builder);
current = current.Parent;
}
}
composer.Color(ConsoleColor.Yellow, c => c.Text("USAGE:")).LineBreak();
composer.Tab().Text(model.ApplicationName ?? Path.GetFileName(Assembly.GetEntryAssembly().Location));
// Root or not a default command?
if (command?.IsDefaultCommand != true)
{
composer.Space();
}
composer.Join(" ", parameters);
}
