private string getArgsUsage(ScriptContext context, int width, CommandLineParameters items)
{
List<Var> sb = new List<Var>();
foreach (CommandLineParameter p in items)
{
string text = p.GetTransformedValue(context);
string vardescr = p.GetDescription(context);
string name;
bool emptyName = (p.Switch ?? string.Empty).Trim().Length == 0;
if (emptyName && string.IsNullOrEmpty(p.Var))
name = p.Switch ?? string.Empty;
else
{
if (string.IsNullOrEmpty(text))
continue;
if (emptyName)
name = " ";
else
{
var pp = items.GetSwitchPrefixesArray();
name = " " + ((pp != null && pp.Length > 0) ? pp[0] : string.Empty) + p.Switch;
}
}
if (p.Count != CommandLineValueCount.None)
{
if (p.Unspecified == null || emptyName)
{
if (!string.IsNullOrEmpty(vardescr))
name += " " + vardescr;
}
else
name += " [" + vardescr + "]";
}
StringBuilder vb = new StringBuilder();
vb.Append(text);
if ((Options & UsageOptions.AutoSuffix) != 0)
{
if (p.Required)
vb.Append(" (required)");
else if (p.Default != null && p.Count != CommandLineValueCount.None)
{
string def = Utils.To<string>(context.Transform(p.Default, p.Transform));
vb.Append(" (default: " + def + ")");
}
}
Var v = new Var(name, vb.ToString());
sb.Add(v);
}
StringWriter sw = new StringWriter();
Utils.WrapTwoColumns(sw, sb, 30, width);
return sw.ToString();
}
