public static ICliFunctionalityProvider AddHelp(this ICliFunctionalityProvider functionalityProvider)
{
if (functionalityProvider == null)
{
throw new ArgumentNullException(nameof(functionalityProvider));
}
if (!functionalityProvider.SupportsHelp)
{
throw new ArgumentException(
$"Functionality provider '{functionalityProvider.Name}' doesn't support help.",
nameof(functionalityProvider));
}
return(functionalityProvider.AddCustomHandler(
() => functionalityProvider.Output.WriteLine(functionalityProvider.GetHelp()),
"--help"));
}
public static ICliFunctionalityProvider AddVersion(this ICliFunctionalityProvider functionalityProvider)
{
if (functionalityProvider == null)
{
throw new ArgumentNullException(nameof(functionalityProvider));
}
if (functionalityProvider.Version == null)
{
throw new ArgumentException(
$"Functionality provider '{functionalityProvider.Name}' doesn't support version.",
nameof(functionalityProvider));
}
return(functionalityProvider.AddCustomHandler(
() => functionalityProvider.Output.WriteLine(functionalityProvider.Version),
"--version"));
}