protected FilterHost(TContext context, IEnumerable <FilterConfiguration> configurations, IEnumerable <IFilter> filters)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context), "Context must not be null.");
}
if (filters == null || filters.Any() == false)
{
throw new ArgumentNullException(nameof(filters), "No filter specified.");
}
_help = new StringWriter();
_commandLineParser = new Parser(s =>
{
s.CaseSensitive = false;
s.CaseInsensitiveEnumValues = true;
s.ParsingCulture = CultureInfo.GetCultureInfo("en-US");
s.HelpWriter = _help;
});
Context = context;
Configurations = new FilterConfigurationCollection(DefaultConfigurations);
Configurations.AddRange(FilterConfigurationAttribute.GetConfigurations(Context.GetType(), false));
Configurations.AddRange(FilterConfigurationAttribute.GetConfigurations(this.GetType(), false));
if (configurations != null)
{
Configurations.AddRange(configurations);
}
Filters = filters.ToDictionary(f => f.Info.OptionsType);
}
private static ExceptionFilterConfiguration GetFilterConfiguration(Type filterType)
{
if (_filterConfigurations.TryGetValue(filterType, out ExceptionFilterConfiguration config))
{
return(config);
}
FilterConfigurationAttribute attribute = filterType.GetTypeInfo().GetCustomAttribute <FilterConfigurationAttribute>();
if (null == attribute)
{
throw new InvalidOperationException(Resources.ExceptionFilterConfigurationTypeNotSet.Fill(filterType.FullName));
}
return(_filterConfigurations[filterType] = (ExceptionFilterConfiguration)Activator.CreateInstance(attribute.FilterConfigurationType));
}
