Method CopyStepAlgorithmFromAnother

apps/gdalalg_abstract_pipeline.cpp:313–377

Copy arguments and other parameters from \a src to \a dst, typically * when turning a raster algorithm to the vector one of the same name, or * vice-versa. */

 * vice-versa.
 */
bool GDALAbstractPipelineAlgorithm::CopyStepAlgorithmFromAnother(
    GDALPipelineStepAlgorithm *dst, const GDALPipelineStepAlgorithm *src,
    bool maybeWriteStep) const
{
    if (src->GetName() == GDALTeeStepAlgorithmAbstract::NAME)
    {
        const auto poSrcTeeAlg =
            dynamic_cast<const GDALTeeStepAlgorithmAbstract *>(src);
        auto poDstTeeAlg = dynamic_cast<GDALTeeStepAlgorithmAbstract *>(dst);
        CPLAssert(poSrcTeeAlg);
        CPLAssert(poDstTeeAlg);
        poDstTeeAlg->CopyFilenameBindingsFrom(poSrcTeeAlg);
    }

    if (maybeWriteStep)
    {
        // Propagate output parameters set at the pipeline level to the
        // "write" step
        for (auto &arg : dst->GetArgs())
        {
            if (!arg->IsHidden())
            {
                const auto pipelineArg = GetArg(arg->GetName());
                if (pipelineArg && pipelineArg->IsExplicitlySet() &&
                    pipelineArg->GetType() == arg->GetType())
                {
                    arg->SetSkipIfAlreadySet(true);
                    [[maybe_unused]] bool ret = arg->SetFrom(*pipelineArg);
                    CPLAssert(ret);
                }
            }
        }
    }

    // Propagate parameters set on the old algorithm to the new one
    for (const auto &srcArg : src->GetArgs())
    {
        if (srcArg->IsExplicitlySet())
        {
            auto dstArg = dst->GetArg(srcArg->GetName());
            if (!dstArg)
            {
                dst->ReportError(CE_Failure, CPLE_IllegalArg,
                                 "Option '--%s' is unknown",
                                 srcArg->GetName().c_str());
                return false;
            }
            else
            {
                dstArg->SetSkipIfAlreadySet(true);
                if (!dstArg->SetFrom(*srcArg))
                    return false;
            }
        }
    }

    dst->m_oMapDatasetNameToDataset =
        std::move(src->m_oMapDatasetNameToDataset);