Method PrintCmdLine

library/cpp/getopt/small/last_getopt_opts.cpp:325–362

    }

    void TOpts::PrintCmdLine(const TStringBuf& program, IOutputStream& os, const NColorizer::TColors& colors) const {
        os << colors.BoldColor() << "Usage" << colors.OldColor() << ": ";
        if (CustomUsage) {
            os << CustomUsage;
        } else {
            os << program << " ";
        }
        if (CustomCmdLineDescr) {
            os << CustomCmdLineDescr << Endl;
            return;
        }
        os << "[OPTIONS]";

        ui32 numDescribedFlags = GetTrailingArgsIndex();
        ui32 numArgsToShow = Max(FreeArgsMin_, FreeArgsMax_ == UNLIMITED_ARGS ? numDescribedFlags : FreeArgsMax_);

        for (ui32 i = 0, nonOptionalFlagsPrinted = 0; i < numArgsToShow; ++i) {
            bool isOptional = nonOptionalFlagsPrinted >= FreeArgsMin_ || FreeArgSpecs_.Value(i, TFreeArgSpec()).Optional_;

            nonOptionalFlagsPrinted += !isOptional;

            os << " ";

            if (isOptional)
                os << "[";

            os << GetFreeArgTitle(i);

            if (isOptional)
                os << "]";
        }

        if (FreeArgsMax_ == UNLIMITED_ARGS) {
            os << " [" << TrailingArgSpec_.GetTitle(DefaultFreeArgTitle_) << "]...";
        }

        os << Endl;
    }

    void TOpts::PrintUsage(const TStringBuf& program, IOutputStream& osIn, const NColorizer::TColors& colors) const {
        TStringStream os;