private IList <string> DetermineMissingRequiredCommands(IList <CommandArgument> dispatchedCommands)
{
IList <string> missing = new List <string>();
//
// figure out which arguments are required
//
var required =
this.arguments.Where(a =>
CommandArgumentFlags.FlagEnabled(a.Flags, CommandArgumentFlags.Required)).ToList();
if (required.Count > 0)
{
//
// if we actually have some required arguments, then some might
// not have been dispatched, which means they're missing
//
foreach (var requiredCommand in required)
{
if (!dispatchedCommands.Contains(requiredCommand))
{
missing.Add(requiredCommand.LongName);
}
}
}
return(missing);
}
private string GetUsageString(string appName)
{
var sb = new StringBuilder();
//
// usage start
//
sb.Append("Usage: ");
sb.Append(appName);
sb.Append(' ');
//
// required arguments
//
var required = this.arguments.Where(a =>
CommandArgumentFlags.FlagEnabled(a.Flags, CommandArgumentFlags.Required) &&
CommandArgumentFlags.FlagDisabled(a.Flags, CommandArgumentFlags.HideInUsage)).ToList();
if (required.Count > 0)
{
AppendArgumentsToUsage(sb, required);
}
//
// optional arguments
//
var optional = this.arguments.Where(a =>
CommandArgumentFlags.FlagDisabled(a.Flags, CommandArgumentFlags.Required) &&
CommandArgumentFlags.FlagDisabled(a.Flags, CommandArgumentFlags.HideInUsage)).ToList();
if (optional.Count > 0)
{
sb.Append(" [");
AppendArgumentsToUsage(sb, optional);
sb.Append("]");
}
return(sb.ToString());
}
private void AppendArgumentsToUsage(StringBuilder sb, IList <CommandArgument> arguments)
{
foreach (var opt in arguments)
{
sb.Append(GetCommandDisplayName(opt.Name));
if (CommandArgumentFlags.FlagEnabled(opt.Flags, CommandArgumentFlags.TakesParameter))
{
if (!String.IsNullOrEmpty(opt.ParameterName))
{
sb.Append(" <");
sb.Append(opt.ParameterName);
sb.Append(">");
}
else
{
sb.Append(" <arg>");
}
}
sb.Append(' ');
}
sb.Remove(sb.Length - 1, 1);
}