Function parseArgs

src/Detector/tensorrt_yolo/common/getOptions.cpp:143–236

parseArgs parses an argument list and returns a TRTParsedArgs with the fields set accordingly. Assumes that options is validated. ErrMsg will be set if: - an argument is null - an argument is empty - an argument does not have option (i.e. "-" and "--") - a short argument has more than 1 character - the last argument in the list requires a value

//!     - a short argument has more than 1 character
//!     - the last argument in the list requires a value
TRTParsedArgs parseArgs(int argc, const char* const* argv, const std::vector<TRTOption>& options)
{
    TRTParsedArgs parsedArgs;
    parsedArgs.values.resize(options.size());

    for (int i = 1; i < argc; ++i) // index of current command-line argument
    {
        if (argv[i] == nullptr)
        {
            return TRTParsedArgs{"Null argument at index " + std::to_string(i)};
        }

        const std::string argStr(argv[i]);
        if (argStr.empty())
        {
            return TRTParsedArgs{"Empty argument at index " + std::to_string(i)};
        }

        // No starting hyphen means it is a positional argument
        if (argStr[0] != '-')
        {
            parsedArgs.positionalArgs.push_back(argStr);
            continue;
        }

        if (argStr == "-" || argStr == "--")
        {
            return TRTParsedArgs{"Argument does not specify an option at index " + std::to_string(i)};
        }

        // If only 1 hyphen, char after is the flag.
        TRTOption opt{' ', "", false, ""};
        std::string value;
        if (argStr[1] != '-')
        {
            // Must only have 1 char after the hyphen
            if (argStr.size() > 2)
            {
                return TRTParsedArgs{"Short arg contains more than 1 character at index " + std::to_string(i)};
            }
            opt.shortName = argStr[1];
        }
        else
        {
            opt.longName = argStr.substr(2);

            // We need to support --foo=bar syntax, so look for '='
            const size_t eqIndex = opt.longName.find('=');
            if (eqIndex < opt.longName.size())
            {
                value = opt.longName.substr(eqIndex + 1);
                opt.longName = opt.longName.substr(0, eqIndex);
            }
        }

        const int idx = getTRTOptionIndex(options, opt);
        if (idx < 0)
        {