private bool NO_ARG(OptionEntry entry)
{
switch (entry.arg)
{
case OptionArg.NONE:
case OptionArg.CALLBACK:
return(true);
default:
return(entry.flags.HasFlag(OptionFlags.NO_ARG));
}
}
private bool parse_arg(
OptionGroup group,
OptionEntry entry,
string value,
string option_name
)
{
Debug.Assert(value != null || OPTIONAL_ARG(entry) || NO_ARG(entry));
switch (entry.arg)
{
case OptionArg.NONE: {
OptionEntry <bool> centry = entry as OptionEntry <bool>;
centry.arg_data = !centry.flags.HasFlag(OptionFlags.REVERSE);
break;
}
case OptionArg.STRING:
case OptionArg.FILENAME: {
OptionEntry <string> centry = entry as OptionEntry <string>;
centry.arg_data = value;
break;
}
case OptionArg.STRING_ARRAY:
case OptionArg.FILENAME_ARRAY: {
OptionEntry <IList <string> > centry = entry as OptionEntry <IList <string> >;
if (centry.arg_data == null)
{
centry.arg_data = new List <string>();
}
centry.arg_data.Add(value);
break;
}
case OptionArg.INT: {
OptionEntry <int> centry = entry as OptionEntry <int>;
centry.arg_data = int.Parse(value);
break;
}
case OptionArg.CALLBACK: {
OptionEntry <OptionArgFunc> centry = entry as OptionEntry <OptionArgFunc>;
string data = null;
if (
centry.flags.HasFlag(OptionFlags.OPTIONAL_ARG) ||
centry.flags.HasFlag(OptionFlags.NO_ARG)
)
{
data = null;
}
else if (centry.flags.HasFlag(OptionFlags.FILENAME))
{
data = value;
}
if (centry.flags.HasFlag(OptionFlags.NO_ARG | OptionFlags.OPTIONAL_ARG) && data == null)
{
return(false);
}
bool retval = centry.arg_data(option_name, data, group.user_data);
if (!retval)
{
throw new Exception("Error parsing option " + option_name);
}
return(retval);
}
case OptionArg.DOUBLE: {
OptionEntry <double> centry = entry as OptionEntry <double>;
centry.arg_data = double.Parse(value);
break;
}
case OptionArg.INT64: {
OptionEntry <Int64> centry = entry as OptionEntry <Int64>;
centry.arg_data = Int64.Parse(value);
break;
}
default:
Debug.Assert(false);
break;
}
return(true);
}
private bool OPTIONAL_ARG(OptionEntry entry)
{
return(entry.arg == OptionArg.CALLBACK && entry.flags.HasFlag(OptionFlags.OPTIONAL_ARG));
}