private void ParseAndSetCollectionValue(OptionsParsingContext context, OptionPropertyMetadata propertyMetadata, string[] args, ref int index)
{
var startIndex = index;
var valueCount = 0;
while (index < args.Length)
{
if (_optionsMetadata.IsKeyword(args[index]))
{
index--;
break;
}
valueCount++;
index++;
}
var parser = _valueParserSelector.GetParserForProperty(propertyMetadata);
var rawValues = args.GetArraySubset(startIndex, valueCount);
context.SetCollectionValue(propertyMetadata, rawValues, parser);
}
public TOptions Parse(string[] args)
{
_optionsMetadataValidator.Validate();
OptionPropertyMetadata matchingProperty;
var parsingContext = new OptionsParsingContext(_optionsMetadata);
for (var i = 0; i < args.Length; i++)
{
if (_optionsMetadata.TryGetSwitchValueByName(args[i], out var switchValue))
{
parsingContext.SetValue(switchValue.PropertyMetadata, switchValue.Value);
continue;
}
if (_optionsMetadata.TryGetPropertyByIndex(i, out matchingProperty))
{
if (matchingProperty.IsCollection)
{
ParseAndSetCollectionValue(parsingContext, matchingProperty, args, ref i);
}
else
{
ParseAndSetValue(parsingContext, matchingProperty, args[i]);
}
continue;
}
if (_optionsMetadata.TryGetPropertyByOptionName(args[i], out matchingProperty))
{
if (i + 1 >= args.Length || _optionsMetadata.IsKeyword(args[i + 1]))
{
parsingContext.AddOptionWithoutValueError(args[i]);
continue;
}
if (matchingProperty.IsCollection)
{
i++; // Skip the option name
ParseAndSetCollectionValue(parsingContext, matchingProperty, args, ref i);
}
else
{
ParseAndSetValue(parsingContext, matchingProperty, args[i + 1]);
i++;
}
continue;
}
parsingContext.AddInvalidOptionError(args[i]);
}
var options = _optionsFactory.CreateOptions(parsingContext.GetValues());
var validationErrors = _optionsValidator.ValidateOptions(options);
parsingContext.AddValidationErrors(validationErrors);
if (parsingContext.HasErrors)
{
throw new InvalidOptionsException(parsingContext.Errors);
}
return(options);
}
private void ParseAndSetValue(OptionsParsingContext context, OptionPropertyMetadata propertyMetadata, string rawValue)
{
var parser = _valueParserSelector.GetParserForProperty(propertyMetadata);
context.SetValue(propertyMetadata, rawValue, parser);
}