internal static bool SetArgumentValue <T>(T instance, MappingInfo mappingInfo, IDictionary <string, CommandLineArgument> arguments)
{
PropertyInfo propertyInfo = mappingInfo.PropertyInfo;
CommandLineAttribute attribute = mappingInfo.CommandLineAttribute;
var count = 0;
bool trim = attribute.TrimQuotation();
CommandLineArgument argument;
string stringValue;
foreach (var name in mappingInfo.GetNames())
{
if (arguments.TryGetValue(name, out argument))
{
if (argument.Value == null)
{
throw new CommandLineArgumentException($"The value of the argument '{argument.Name}' was not specified.")
{
Reason = ErrorReason.ArgumentWithoutValue
}
}
;
stringValue = GetValue(argument.Value, trim);
propertyInfo.SetValue(instance, ConvertValue(propertyInfo.PropertyType, stringValue, (t, v) => CreateErrorMessage(t, v, name)), null);
mappingInfo.CommandLineArgument = argument;
argument.Mapped = true;
if (!mappingInfo.IsShared())
{
arguments.Remove(name);
}
count++;
}
}
if (count == 0 && TryGetByIndex(arguments, mappingInfo, out var entry))
{
argument = entry.Value;
if (argument != null && argument.Value == null)
{
stringValue = GetValue(argument.Name, trim);
propertyInfo.SetValue(instance, ConvertValue(propertyInfo.PropertyType, stringValue, (t, v) => CreateErrorMessage(t, v, attribute.Name)), null);
mappingInfo.CommandLineArgument = argument;
arguments.Remove(entry.Key);
count++;
}
}
if (count > 1)
{
throw new AmbiguousCommandLineArgumentsException($"The value for the argument '{mappingInfo.Name}' was specified multiple times.");
}
if (count == 0 && attribute.IsRequired())
{
throw new MissingCommandLineArgumentException(mappingInfo.Name);
}
return(count > 0);
}
private static bool TryGetByIndex(IDictionary <string, CommandLineArgument> arguments, MappingInfo mappingInfo, out KeyValuePair <string, CommandLineArgument> argument)
{
var index = mappingInfo.CommandLineAttribute.GetIndex();
if (index >= 0)
{
foreach (var commandLineArgument in arguments)
{
if (commandLineArgument.Value.Index == index)
{
var betterNameMatch = mappingInfo.GetNameMatch(commandLineArgument.Value.Name);
if (betterNameMatch == null)
{
argument = commandLineArgument;
return(true);
}
break;
}
}
}
argument = new KeyValuePair <string, CommandLineArgument>();
return(false);
}
