/// <summary>
/// Generates help text based on custom arguments class
/// </summary>
internal static string Usage()
{
IDictionary <string, ArgumentData> data = ArgumentParserUtils.GetArgumentData <T>();
DetailsAttribute detailsAttr = typeof(T).GetCustomAttribute <DetailsAttribute>();
string details = detailsAttr != null ? detailsAttr.Details : string.Empty;
ITemplate template = new CommandLineUsage
{
Name = Process.GetCurrentProcess().ProcessName,
Description = details,
Required = data.Values.Where(x => !x.Optional).Distinct(),
Optional = data.Values.Where(x => x.Optional).Distinct(),
};
return(template.Print());
}
internal static ArgumentData Parse(PropertyInfo propertyInfo)
{
DetailsAttribute detailsAttr = propertyInfo.GetCustomAttribute <DetailsAttribute>();
OptionalAttribute optionalAttr = propertyInfo.GetCustomAttribute <OptionalAttribute>();
ParamAttribute paramAttr = propertyInfo.GetCustomAttribute <ParamAttribute>();
if (paramAttr == null)
{
return(null);
}
if (!IsTypeSupported(propertyInfo.PropertyType, paramAttr.Type))
{
throw new InvalidOperationException(
string.Format("Incompatible type specified for '{0}'", propertyInfo.Name));
}
if (string.IsNullOrWhiteSpace(paramAttr.Key) && string.IsNullOrWhiteSpace(paramAttr.LongKey))
{
throw new InvalidOperationException(
string.Format("Both Key & LongKey cannot be null for property '{0}'.", propertyInfo.Name));
}
string details = detailsAttr != null ? detailsAttr.Details : null;
string defaultValue = optionalAttr != null ? optionalAttr.DefaultValue : null;
ArgumentData data = new ArgumentData
{
DefaultValue = defaultValue,
Details = details,
Key = paramAttr.Key,
LongKey = paramAttr.LongKey,
Optional = optionalAttr != null,
Property = propertyInfo,
Type = paramAttr.Type,
};
return(data);
}