Method GetAutoComplete

gcore/gdalalgorithm.cpp:7208–7392

/************************************************************************/

std::vector<std::string>
GDALAlgorithm::GetAutoComplete(std::vector<std::string> &args,
                               bool lastWordIsComplete, bool showAllOptions)
{
    std::vector<std::string> ret;

    // Get inner-most algorithm
    std::unique_ptr<GDALAlgorithm> curAlgHolder;
    GDALAlgorithm *curAlg = this;
    while (!args.empty() && !args.front().empty() && args.front()[0] != '-')
    {
        auto subAlg = curAlg->InstantiateSubAlgorithm(
            args.front(), /* suggestionAllowed = */ false);
        if (!subAlg)
            break;
        if (args.size() == 1 && !lastWordIsComplete)
        {
            int nCount = 0;
            for (const auto &subAlgName : curAlg->GetSubAlgorithmNames())
            {
                if (STARTS_WITH(subAlgName.c_str(), args.front().c_str()))
                    nCount++;
            }
            if (nCount >= 2)
            {
                for (const std::string &subAlgName :
                     curAlg->GetSubAlgorithmNames())
                {
                    subAlg = curAlg->InstantiateSubAlgorithm(subAlgName);
                    if (subAlg && !subAlg->IsHidden())
                        ret.push_back(subAlg->GetName());
                }
                return ret;
            }
        }
        showAllOptions = false;
        args.erase(args.begin());
        curAlgHolder = std::move(subAlg);
        curAlg = curAlgHolder.get();
    }
    if (curAlg != this)
    {
        curAlg->m_calledFromCommandLine = m_calledFromCommandLine;
        return curAlg->GetAutoComplete(args, lastWordIsComplete,
                                       /* showAllOptions = */ false);
    }

    std::string option;
    std::string value;
    ExtractLastOptionAndValue(args, option, value);

    if (option.empty() && !args.empty() && !args.back().empty() &&
        args.back()[0] == '-')
    {
        const auto &lastArg = args.back();
        // List available options
        for (const auto &arg : GetArgs())
        {