Method LoadVectorLayers

gcore/gdaljp2abstractdataset.cpp:328–608

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

void GDALJP2AbstractDataset::LoadVectorLayers(int bOpenRemoteResources)
{
    CSLConstList papszGMLJP2 = GetMetadata("xml:gml.root-instance");
    if (papszGMLJP2 == nullptr)
        return;

    CPLErr eLastErr = CPLGetLastErrorType();
    int nLastErrNo = CPLGetLastErrorNo();
    CPLString osLastErrorMsg = CPLGetLastErrorMsg();
    CPLXMLNode *const psRoot = CPLParseXMLString(papszGMLJP2[0]);
    if (CPLGetLastErrorType() == CE_None && eLastErr != CE_None)
        CPLErrorSetState(eLastErr, nLastErrNo, osLastErrorMsg.c_str());

    if (psRoot == nullptr)
        return;
    CPLXMLNode *const psCC =
        CPLGetXMLNode(psRoot, "=gmljp2:GMLJP2CoverageCollection");
    if (psCC == nullptr)
    {
        CPLDestroyXMLNode(psRoot);
        return;
    }

    const std::string osTmpDir = VSIMemGenerateHiddenFilename("gmljp2");

    // Find feature collections.
    int nLayersAtCC = 0;
    int nLayersAtGC = 0;
    // CPLXMLNode* psCCChildIter = psCC->psChild;
    for (CPLXMLNode *psCCChildIter = psCC->psChild; psCCChildIter != nullptr;
         psCCChildIter = psCCChildIter->psNext)
    {
        if (psCCChildIter->eType != CXT_Element ||
            strcmp(psCCChildIter->pszValue, "gmljp2:featureMember") != 0 ||
            psCCChildIter->psChild == nullptr ||
            psCCChildIter->psChild->eType != CXT_Element)
            continue;

        CPLXMLNode *const psGCorGMLJP2Features = psCCChildIter->psChild;
        bool bIsGC =
            strstr(psGCorGMLJP2Features->pszValue, "GridCoverage") != nullptr;

        for (CPLXMLNode *psGCorGMLJP2FeaturesChildIter =
                 psGCorGMLJP2Features->psChild;
             psGCorGMLJP2FeaturesChildIter != nullptr;
             psGCorGMLJP2FeaturesChildIter =
                 psGCorGMLJP2FeaturesChildIter->psNext)
        {
            if (psGCorGMLJP2FeaturesChildIter->eType != CXT_Element ||
                strcmp(psGCorGMLJP2FeaturesChildIter->pszValue,
                       "gmljp2:feature") != 0 ||
                psGCorGMLJP2FeaturesChildIter->psChild == nullptr)
                continue;

            CPLXMLNode *psFC = nullptr;
            bool bFreeFC = false;

            CPLXMLNode *const psChild = psGCorGMLJP2FeaturesChildIter->psChild;