Method ValidateFormat

gcore/gdalalgorithm.cpp:4489–4667

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

bool GDALAlgorithm::ValidateFormat(const GDALAlgorithmArg &arg,
                                   bool bStreamAllowed,
                                   bool bGDALGAllowed) const
{
    if (arg.GetChoices().empty())
    {
        const auto Validate =
            [this, &arg, bStreamAllowed, bGDALGAllowed](const std::string &val)
        {
            if (const auto extraFormats =
                    arg.GetMetadataItem(GAAMDI_EXTRA_FORMATS))
            {
                for (const auto &extraFormat : *extraFormats)
                {
                    if (EQUAL(val.c_str(), extraFormat.c_str()))
                        return true;
                }
            }

            if (bStreamAllowed && EQUAL(val.c_str(), "stream"))
                return true;

            if (EQUAL(val.c_str(), "GDALG") &&
                arg.GetName() == GDAL_ARG_NAME_OUTPUT_FORMAT)
            {
                if (bGDALGAllowed)
                {
                    return true;
                }
                else
                {
                    ReportError(CE_Failure, CPLE_NotSupported,
                                "GDALG output is not supported.");
                    return false;
                }
            }

            const auto vrtCompatible =
                arg.GetMetadataItem(GAAMDI_VRT_COMPATIBLE);
            if (vrtCompatible && !vrtCompatible->empty() &&
                vrtCompatible->front() == "false" && EQUAL(val.c_str(), "VRT"))
            {
                ReportError(CE_Failure, CPLE_NotSupported,
                            "VRT output is not supported.%s",
                            bGDALGAllowed
                                ? " Consider using the GDALG driver instead "
                                  "(files with .gdalg.json extension)."
                                : "");
                return false;
            }

            const auto allowedFormats =
                arg.GetMetadataItem(GAAMDI_ALLOWED_FORMATS);
            if (allowedFormats && !allowedFormats->empty() &&
                std::find(allowedFormats->begin(), allowedFormats->end(),
                          val) != allowedFormats->end())
            {
                return true;