private static bool TryConvertValueToChoice(IEnumerable <string> values, ChoiceTemplateParameter parameter, out string parsedValue, out string error)
{
parsedValue = string.Empty;
error = string.Empty;
List <string> parsedValues = new List <string>();
foreach (string val in values)
{
if (!TryConvertSingleValueToChoice(val, parameter, out string value, out error))
{
return(false);
}
parsedValues.Add(value);
}
// An empty value is not allowed when multiple choice values are specified.
if (parsedValues.Count > 1 && parsedValues.Any(string.IsNullOrEmpty))
{
error = CreateParseError(string.Empty, parameter);
return(false);
}
parsedValue = string.Join(MultiValueParameter.MultiValueSeparator, parsedValues);
return(true);
}
private static string CreateParseError(string value, ChoiceTemplateParameter parameter)
{
//value '{0}' is not allowed, allowed values are: {1}
return(string.Format(
LocalizableStrings.ParseChoiceTemplateOption_ErrorText_InvalidChoiceValue,
value,
string.Join(",", parameter.Choices.Keys.Select(key => $"'{key}'"))));
}
internal CombinedChoiceTemplateParameter(ChoiceTemplateParameter parameter) : base(parameter)
{
foreach (var choice in parameter.Choices)
{
if (!_combinedParameters.ContainsKey(choice.Key))
{
_combinedParameters[choice.Key] = choice.Value;
}
}
}
internal void MergeChoices(ChoiceTemplateParameter parameter)
{
if (parameter.Type != ParameterType.Choice)
{
throw new ArgumentException($"{nameof(parameter)} should have {nameof(parameter.Type)} {nameof(ParameterType.Choice)}");
}
if (parameter.Choices == null)
{
throw new ArgumentException($"{nameof(parameter)} should have {nameof(parameter.Choices)}");
}
foreach (var choice in parameter.Choices)
{
if (!_combinedParameters.ContainsKey(choice.Key))
{
_combinedParameters[choice.Key] = choice.Value;
}
}
}
private static bool TryConvertSingleValueToChoice(string value, ChoiceTemplateParameter parameter, out string parsedValue, out string error)
{
parsedValue = string.Empty;
error = string.Empty;
if (value.Equals(string.Empty))
{
return(true);
}
foreach (string choiceValue in parameter.Choices.Keys)
{
if (string.Equals(choiceValue, value, StringComparison.OrdinalIgnoreCase))
{
parsedValue = choiceValue;
return(true);
}
}
error = CreateParseError(value, parameter);
return(false);
}
private static ParseArgument <string> GetParseChoiceArgument(ChoiceTemplateParameter parameter)
{
return((argumentResult) =>
{
if (argumentResult.Parent is not OptionResult or)
{
throw new NotSupportedException("The method should be only used with option.");
}
if (argumentResult.Tokens.Count == 0)
{
if (or.IsImplicit)
{
if (!string.IsNullOrWhiteSpace(parameter.DefaultValue))
{
if (TryConvertValueToChoice(parameter.DefaultValue, parameter, out string defaultValue, out string error))
{
return defaultValue;
}
//Cannot parse default value '{0}' for option '{1}' as expected type '{2}': {3}.
argumentResult.ErrorMessage = string.Format(
LocalizableStrings.ParseChoiceTemplateOption_Error_InvalidDefaultValue,
parameter.DefaultValue,
or.Token?.Value,
"choice",
error);
return string.Empty;
}
//Default value for argument missing for option: '{0}'.
argumentResult.ErrorMessage = string.Format(LocalizableStrings.ParseTemplateOption_Error_MissingDefaultValue, or.Token?.Value);
return string.Empty;
}
if (parameter.DefaultIfOptionWithoutValue != null)
{
if (TryConvertValueToChoice(parameter.DefaultIfOptionWithoutValue, parameter, out string defaultValue, out string error))
{
return defaultValue;
}
//Cannot parse default if option without value '{0}' for option '{1}' as expected type '{2}': {3}.
argumentResult.ErrorMessage = string.Format(
LocalizableStrings.ParseChoiceTemplateOption_Error_InvalidDefaultIfNoOptionValue,
parameter.DefaultIfOptionWithoutValue,
or.Token?.Value,
"choice",
error);
return string.Empty;
}
//Required argument missing for option: '{0}'.
argumentResult.ErrorMessage = string.Format(LocalizableStrings.ParseTemplateOption_Error_MissingDefaultIfNoOptionValue, or.Token?.Value);
return string.Empty;
}
else if (!parameter.AllowMultipleValues && argumentResult.Tokens.Count != 1)
{
//Using more than 1 argument is not allowed for '{0}', used: {1}.
argumentResult.ErrorMessage = string.Format(LocalizableStrings.ParseTemplateOption_Error_InvalidCount, or.Token?.Value, argumentResult.Tokens.Count);
return string.Empty;
}
else
{
if (!TryConvertValueToChoice(argumentResult.Tokens.Select(t => t.Value), parameter, out string value, out string error))
{
//Cannot parse argument '{0}' for option '{1}' as expected type '{2}': {3}.
argumentResult.ErrorMessage = string.Format(
LocalizableStrings.ParseChoiceTemplateOption_Error_InvalidArgument,
argumentResult.Tokens[0].Value,
or.Token?.Value,
"choice",
error);
return string.Empty;
}
return value;
}
});
}
internal ChoiceTemplateParameter(ChoiceTemplateParameter choiceTemplateParameter)
: base(choiceTemplateParameter)
{
_choices = choiceTemplateParameter.Choices.ToDictionary(kvp => kvp.Key, kvp => kvp.Value, StringComparer.OrdinalIgnoreCase);
}
private static bool TryConvertValueToChoice(string value, ChoiceTemplateParameter parameter, out string parsedValue, out string error)
{
return(TryConvertValueToChoice(value.TokenizeMultiValueParameter(), parameter, out parsedValue, out error));
}