/// <inheritdoc />
public ValidationResult GetValidationResult(CommandOption option, ValidationContext context)
{
if (option.HasValue())
{
return(ValidationResult.Success);
}
var varName = $"{_rootApplication.Name}_{option.LongName}".ToUpper();
var environmentVariables = Environment.GetEnvironmentVariables();
if (environmentVariables.Contains(varName))
{
_command?.DebugLogFromSetOptionValueFromEnvironmentVariable.Add($"Setting option --{option.LongName} with the value of the environment variable {varName}.");
option.TryParse(environmentVariables[varName] as string);
if (_property != null)
{
var parser = _application.ValueParsers.GetParser(_property.PropertyType);
var value = parser.Parse(option.LongName, environmentVariables[varName] as string, CultureInfo.CurrentCulture);
StaticUtilities.SetPropertyValue(_property, _command, value);
}
}
return(ValidationResult.Success);
}