/******************************************************************************
 *
 * Project:  GDAL
 * Purpose:  netCDF driver
 * Author:   Even Rouault, <even.rouault at spatialys.com>
 *
 ******************************************************************************
 * Copyright (c) 2023, Even Rouault, <even.rouault at spatialys.com>
 *
 * SPDX-License-Identifier: MIT
 ****************************************************************************/

#include "ogrsf_frmts.h"
#include "gdal_priv.h"

#include "gdal_frmts.h"
#include "gdalplugindriverproxy.h"
#include "gdalsubdatasetinfo.h"

#include "netcdfdrivercore.h"

#include <algorithm>
#include <cctype>
#include <string_view>

#ifdef HAS_NETCDF_H
#include "netcdfdataset.h"
#ifdef NETCDF_HAS_NC2
#define NETCDF_CORE_HAS_NC2 1
#endif
#else
// We don't have an easy way to guess that without accessing netcdf.h, so
// assume it is present
#ifndef NETCDF_CORE_HAS_NC2
#define NETCDF_CORE_HAS_NC2 1
#endif
#endif

/************************************************************************/
/*                      netCDFIdentifyFormat()                          */
/************************************************************************/

NetCDFFormatEnum netCDFIdentifyFormat(GDALOpenInfo *poOpenInfo, bool bCheckExt)
{
    // Does this appear to be a netcdf file? If so, which format?
    // http://www.unidata.ucar.edu/software/netcdf/docs/faq.html#fv1_5

    if (STARTS_WITH_CI(poOpenInfo->pszFilename, "NETCDF:"))
        return NCDF_FORMAT_UNKNOWN;
    if (poOpenInfo->nHeaderBytes < 4)
        return NCDF_FORMAT_NONE;
    const char *pszHeader =
        reinterpret_cast<const char *>(poOpenInfo->pabyHeader);

#ifdef ENABLE_NCDUMP
    if (poOpenInfo->fpL != nullptr && STARTS_WITH(pszHeader, "netcdf ") &&
        strstr(pszHeader, "dimensions:") && strstr(pszHeader, "variables:"))
    {
        if (strstr(pszHeader, "// NC4C"))
            return NCDF_FORMAT_NC4C;
        else if (strstr(pszHeader, "// NC4"))
            return NCDF_FORMAT_NC4;
        else
            return NCDF_FORMAT_NC;
    }
#endif  // ENABLE_NCDUMP

#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
    // We don't necessarily want to catch bugs in libnetcdf ...
    if (CPLGetConfigOption("DISABLE_OPEN_REAL_NETCDF_FILES", nullptr))
    {
        return NCDF_FORMAT_NONE;
    }
#endif

    if (STARTS_WITH_CI(pszHeader, "CDF\001"))
    {
        return NCDF_FORMAT_NC;
    }

    if (STARTS_WITH_CI(pszHeader, "CDF\002"))
    {
        return NCDF_FORMAT_NC2;
    }

    constexpr char HDF5_SIG[] = "\211HDF\r\n\032\n";
    constexpr int HDF5_SIG_LEN = int(std::char_traits<char>::length(HDF5_SIG));
    static_assert(HDF5_SIG_LEN == 8);
    // First non-zero offset at which the HDF5 signature can be found.
    constexpr int HDF5_SIG_OFFSET = 512;
    if (STARTS_WITH_CI(pszHeader, HDF5_SIG) ||
        (poOpenInfo->nHeaderBytes > HDF5_SIG_OFFSET + HDF5_SIG_LEN &&
         memcmp(pszHeader + HDF5_SIG_OFFSET, HDF5_SIG, HDF5_SIG_LEN) == 0))
    {
        // Requires netCDF-4/HDF5 support in libnetcdf (not just libnetcdf-v4).

        // If only the netCDF driver is allowed, immediately recognize the file
        if (poOpenInfo->IsSingleAllowedDriver("netCDF"))
        {
            return NCDF_FORMAT_NC4;
        }

        // If there is a HDF5 GDAL driver available, delegate to it.
        // Otherwise open it with this driver.
        // If the user really wants to open with this driver, use NETCDF:file.h5
        // format.

        // Check for HDF5 driver availability.
        if (bCheckExt)
        {
            // Check by default.
            const char *pszExtension = poOpenInfo->osExtension.c_str();
            if (!(EQUAL(pszExtension, "nc") || EQUAL(pszExtension, "cdf") ||
                  EQUAL(pszExtension, "nc2") || EQUAL(pszExtension, "nc4") ||
                  EQUAL(pszExtension, "nc3") || EQUAL(pszExtension, "grd") ||
                  EQUAL(pszExtension, "gmac")))
            {
                if (GDALGetDriverByName("HDF5") != nullptr)
                {
                    return NCDF_FORMAT_HDF5;
                }
            }
        }

        return NCDF_FORMAT_NC4;
    }
    else if (STARTS_WITH_CI(pszHeader, "\016\003\023\001"))
    {
#ifdef NETCDF_HAS_HDF4
        // There is HDF4 support in libnetcdf and only the netCDF driver is
        // allowed ==> immediately recognize the file.
        if (poOpenInfo->IsSingleAllowedDriver("netCDF"))
        {
            return NCDF_FORMAT_HDF4;
        }
#endif

        // If there is a HDF4 GDAL driver available, delegate to it.
        // Otherwise open it with this driver.
        // If the user really wants to open with this driver, use NETCDF:file.hdf
        // format.

        // Check for HDF4 driver availability.
        if (bCheckExt && GDALGetDriverByName("HDF4") != nullptr)
        {
            // Check by default.
            // Always treat as HDF4 file.
            return NCDF_FORMAT_HDF4;
        }

#ifdef NETCDF_HAS_HDF4
        // There is HDF4 support in libnetcdf.
        return NCDF_FORMAT_HDF4;
#else
        return NCDF_FORMAT_NONE;
#endif
    }

    // The HDF5 signature of netCDF 4 files can be at offsets 512, 1024, 2048,
    // etc.
    const char *pszExtension = poOpenInfo->osExtension.c_str();
    if (poOpenInfo->fpL != nullptr &&
        (!bCheckExt || EQUAL(pszExtension, "nc") ||
         EQUAL(pszExtension, "cdf") || EQUAL(pszExtension, "nc4") ||
         poOpenInfo->IsSingleAllowedDriver("netCDF")))
    {
        vsi_l_offset nOffset = HDF5_SIG_OFFSET;
        for (int i = 0; i < 64; i++)
        {
            GByte abyBuf[HDF5_SIG_LEN];
            if (VSIFSeekL(poOpenInfo->fpL, nOffset, SEEK_SET) != 0 ||
                VSIFReadL(abyBuf, 1, HDF5_SIG_LEN, poOpenInfo->fpL) !=
                    HDF5_SIG_LEN)
            {
                break;
            }
            if (memcmp(abyBuf, HDF5_SIG, HDF5_SIG_LEN) == 0)
            {
                return NCDF_FORMAT_NC4;
            }
            nOffset *= 2;
        }
    }

    return NCDF_FORMAT_NONE;
}

/************************************************************************/
/*                              Identify()                              */
/************************************************************************/

static int netCDFDatasetIdentify(GDALOpenInfo *poOpenInfo)

{
    if (STARTS_WITH_CI(poOpenInfo->pszFilename, "NETCDF:"))
    {
        return TRUE;
    }
    const NetCDFFormatEnum eTmpFormat =
        netCDFIdentifyFormat(poOpenInfo,
                             /* bCheckExt = */ true);
    if (NCDF_FORMAT_NC == eTmpFormat || NCDF_FORMAT_NC2 == eTmpFormat ||
        NCDF_FORMAT_NC4 == eTmpFormat || NCDF_FORMAT_NC4C == eTmpFormat)
        return TRUE;
    if (eTmpFormat == NCDF_FORMAT_HDF4 &&
        poOpenInfo->IsSingleAllowedDriver("netCDF"))
    {
        return TRUE;
    }

    return FALSE;
}

/************************************************************************/
/*                    NCDFDriverGetSubdatasetInfo()                     */
/************************************************************************/

struct NCDFDriverSubdatasetInfo final : public GDALSubdatasetInfo
{
  public:
    explicit NCDFDriverSubdatasetInfo(const std::string &fileName)
        : GDALSubdatasetInfo(fileName)
    {
    }

    // GDALSubdatasetInfo interface
  private:
    void parseFileName() override;
};

void NCDFDriverSubdatasetInfo::parseFileName()
{

    if (!STARTS_WITH_CI(m_fileName.c_str(), "NETCDF:"))
    {
        return;
    }

    CPLStringList aosParts{CSLTokenizeString2(m_fileName.c_str(), ":", 0)};
    const int iPartsCount{CSLCount(aosParts)};

    if (iPartsCount >= 3)
    {

        m_driverPrefixComponent = aosParts[0];

        int subdatasetIndex{2};

        std::string part1{aosParts[1]};
        if (!part1.empty() && part1[0] == '"')
        {
            part1 = part1.substr(1);
        }

        const bool hasDriveLetter{
            (strlen(aosParts[2]) > 1 &&
             (aosParts[2][0] == '\\' || aosParts[2][0] == '/')) &&
            part1.length() == 1 &&
            std::isalpha(static_cast<unsigned char>(part1.at(0)))};

        const bool hasProtocol{part1 == "/vsicurl/http" ||
                               part1 == "/vsicurl/https" ||
                               part1 == "/vsicurl_streaming/http" ||
                               part1 == "/vsicurl_streaming/https" ||
                               part1 == "http" || part1 == "https"};

        m_pathComponent = aosParts[1];
        if (hasDriveLetter || hasProtocol)
        {
            m_pathComponent.append(":");
            m_pathComponent.append(aosParts[2]);
            subdatasetIndex++;

            // Check for a port number and add it to the path component.
            if (hasProtocol && aosParts.size() > 3)
            {
                const auto nChars = strlen(aosParts[3]);
                size_t i = 0;
                while (i < nChars && std::isdigit(aosParts[3][i]))
                {
                    i++;
                }
                if (i > 0 && aosParts[3][i] == '/')
                {
                    m_pathComponent.append(":");
                    m_pathComponent.append(aosParts[3]);
                    subdatasetIndex++;
                }
            }
        }

        // Check for bogus paths
        if (subdatasetIndex < iPartsCount)
        {
            m_subdatasetComponent = aosParts[subdatasetIndex];

            // Append any remaining part
            for (int i = subdatasetIndex + 1; i < iPartsCount; ++i)
            {
                m_subdatasetComponent.append(":");
                m_subdatasetComponent.append(aosParts[i]);
            }
        }

        // Remove quotes from subdataset component
        if (!m_subdatasetComponent.empty() && m_subdatasetComponent[0] == '"')
        {
            m_subdatasetComponent = m_subdatasetComponent.substr(1);
        }
        if (!m_subdatasetComponent.empty() &&
            m_subdatasetComponent.rfind('"') ==
                m_subdatasetComponent.length() - 1)
        {
            m_subdatasetComponent.pop_back();
        }
    }
}

static GDALSubdatasetInfo *NCDFDriverGetSubdatasetInfo(const char *pszFileName)
{
    if (STARTS_WITH_CI(pszFileName, "NETCDF:"))
    {
        std::unique_ptr<GDALSubdatasetInfo> info =
            std::make_unique<NCDFDriverSubdatasetInfo>(pszFileName);
        // Subdataset component can be empty, path cannot.
        if (!info->GetPathComponent().empty())
        {
            return info.release();
        }
    }
    return nullptr;
}

/************************************************************************/
/*                   netCDFDriverSetCommonMetadata()                    */
/************************************************************************/

void netCDFDriverSetCommonMetadata(GDALDriver *poDriver)
{
    // Set the driver details.
    poDriver->SetDescription(DRIVER_NAME);
    poDriver->SetMetadataItem(GDAL_DCAP_RASTER, "YES");
    poDriver->SetMetadataItem(GDAL_DCAP_VECTOR, "YES");
    poDriver->SetMetadataItem(GDAL_DCAP_CREATE_LAYER, "YES");
    poDriver->SetMetadataItem(GDAL_DCAP_CREATE_FIELD, "YES");
    poDriver->SetMetadataItem(GDAL_DCAP_Z_GEOMETRIES, "YES");
    poDriver->SetMetadataItem(GDAL_DMD_LONGNAME, "Network Common Data Format");
    poDriver->SetMetadataItem(GDAL_DMD_HELPTOPIC, "drivers/raster/netcdf.html");
    poDriver->SetMetadataItem(GDAL_DMD_EXTENSION, "nc");

    poDriver->SetMetadataItem(
        GDAL_DMD_OPENOPTIONLIST,
        "<OpenOptionList>"
        "   <Option name='LIST_ALL_ARRAYS' type='boolean' "
        "description='Whether to list all arrays, and not only those whose "
        "dimension count is 2 or more' default='NO'/>"
        "   <Option name='HONOUR_VALID_RANGE' type='boolean' scope='raster' "
        "description='Whether to set to nodata pixel values outside of the "
        "validity range' default='YES'/>"
        "   <Option name='IGNORE_XY_AXIS_NAME_CHECKS' type='boolean' "
        "scope='raster' "
        "description='Whether X/Y dimensions should be always considered as "
        "geospatial axis, even if the lack conventional attributes confirming "
        "it.'"
        " default='NO'/>"
        "   <Option name='VARIABLES_AS_BANDS' type='boolean' scope='raster' "
        "description='Whether 2D variables that share the same indexing "
        "dimensions "
        "should be exposed as several bands of a same dataset instead of "
        "several "
        "subdatasets.' default='NO'/>"
        "   <Option name='ASSUME_LONGLAT' type='boolean' scope='raster' "
        "description='Whether when all else has failed for determining a CRS, "
        "a "
        "meaningful geotransform has been found, and is within the  "
        "bounds -180,360 -90,90, assume OGC:CRS84.' default='NO'/>"
        "   <Option name='PRESERVE_AXIS_UNIT_IN_CRS' type='boolean' "
        "scope='raster' description='Whether unusual linear axis unit (km) "
        "should be kept as such, instead of being normalized to metre' "
        "default='NO'/>"
        "</OpenOptionList>");
    poDriver->SetMetadataItem(
        GDAL_DMD_CREATIONDATATYPES,
        "Byte Int8 UInt16 Int16 UInt32 Int32 Int64 UInt64 "
        "Float32 Float64 "
        "CInt16 CInt32 CFloat32 CFloat64");
    poDriver->SetMetadataItem(
        GDAL_DMD_CREATIONOPTIONLIST,
        "<CreationOptionList>"
        "   <Option name='FORMAT' type='string-select' default='NC'>"
        "     <Value>NC</Value>"
#if NETCDF_CORE_HAS_NC2
        "     <Value>NC2</Value>"
#endif
        "     <Value>NC4</Value>"
        "     <Value>NC4C</Value>"
        "   </Option>"
        "   <Option name='COMPRESS' type='string-select' scope='raster' "
        "default='NONE'>"
        "     <Value>NONE</Value>"
        "     <Value>DEFLATE</Value>"
        "   </Option>"
        "   <Option name='ZLEVEL' type='int' scope='raster' "
        "description='DEFLATE compression level 1-9' default='1'/>"
        "   <Option name='WRITE_BOTTOMUP' type='boolean' scope='raster' "
        "default='YES'>"
        "   </Option>"
        "   <Option name='WRITE_GDAL_TAGS' type='boolean' default='YES'>"
        "   </Option>"
        "   <Option name='WRITE_LONLAT' type='string-select' scope='raster'>"
        "     <Value>YES</Value>"
        "     <Value>NO</Value>"
        "     <Value>IF_NEEDED</Value>"
        "   </Option>"
        "   <Option name='TYPE_LONLAT' type='string-select' scope='raster'>"
        "     <Value>float</Value>"
        "     <Value>double</Value>"
        "   </Option>"
        "   <Option name='PIXELTYPE' type='string-select' scope='raster' "
        "description='(deprecated, use Int8 datatype) only used in Create()'>"
        "       <Value>DEFAULT</Value>"
        "       <Value>SIGNEDBYTE</Value>"
        "   </Option>"
        "   <Option name='CHUNKING' type='boolean' scope='raster' "
        "default='YES' description='define chunking when creating netcdf4 "
        "file'/>"
        "   <Option name='MULTIPLE_LAYERS' type='string-select' scope='vector' "
        "description='Behaviour regarding multiple vector layer creation' "
        "default='NO'>"
        "       <Value>NO</Value>"
        "       <Value>SEPARATE_FILES</Value>"
        "       <Value>SEPARATE_GROUPS</Value>"
        "   </Option>"
        "   <Option name='GEOMETRY_ENCODING' type='string' scope='vector' "
        "default='CF_1.8' description='Specifies the type of geometry encoding "
        "when creating a netCDF dataset'>"
        "       <Value>WKT</Value>"
        "       <Value>CF_1.8</Value>"
        "   </Option>"
        "   <Option name='CONFIG_FILE' type='string' scope='vector' "
        "description='Path to a XML configuration file (or content inlined)'/>"
        "   <Option name='WRITE_GDAL_VERSION' type='boolean' default='YES'/>"
        "   <Option name='WRITE_GDAL_HISTORY' type='boolean' default='YES'/>"
        "   <Option name='BAND_NAMES' type='string' scope='raster' />"
        "</CreationOptionList>");
    poDriver->SetMetadataItem(GDAL_DMD_SUBDATASETS, "YES");

    poDriver->SetMetadataItem(
        GDAL_DS_LAYER_CREATIONOPTIONLIST,
        "<LayerCreationOptionList>"
        "   <Option name='RECORD_DIM_NAME' type='string' description='Name of "
        "the unlimited dimension' default='record'/>"
        "   <Option name='STRING_DEFAULT_WIDTH' type='int' description='"
        "For non-NC4 format, "
        "default width of strings. Default is 10 in autogrow mode, 80 "
        "otherwise.'/>"
        "   <Option name='WKT_DEFAULT_WIDTH' type='int' description='"
        "For non-NC4 format, "
        "default width of WKT strings. Default is 1000 in autogrow mode, 10000 "
        "otherwise.'/>"
        "   <Option name='AUTOGROW_STRINGS' type='boolean' "
        "description='Whether to auto-grow non-bounded string fields of "
        "bidimensional char variable' default='YES'/>"
        "   <Option name='USE_STRING_IN_NC4' type='boolean' "
        "description='Whether to use NetCDF string type for strings in NC4 "
        "format. If NO, bidimensional char variable are used' default='YES'/>"
#if 0
"   <Option name='NCDUMP_COMPAT' type='boolean' description='When USE_STRING_IN_NC4=YEs, whether to use empty string instead of null string to avoid crashes with ncdump' default='NO'/>"
#endif
        "   <Option name='FEATURE_TYPE' type='string-select' description='CF "
        "FeatureType' default='AUTO'>"
        "       <Value>AUTO</Value>"
        "       <Value>POINT</Value>"
        "       <Value>PROFILE</Value>"
        "   </Option>"
        "   <Option name='BUFFER_SIZE' type='int' default='' "
        "description='Specifies the soft limit of buffer translation in bytes. "
        "Minimum size is 4096. Does not apply to datasets with CF version less "
        "than 1.8.'/>"
        "   <Option name='GROUPLESS_WRITE_BACK' type='boolean' default='NO' "
        "description='Enables or disables array building write back for "
        "CF-1.8.'/>"
        "   <Option name='PROFILE_DIM_NAME' type='string' description='Name of "
        "the profile dimension and variable' default='profile'/>"
        "   <Option name='PROFILE_DIM_INIT_SIZE' type='string' "
        "description='Initial size of profile dimension (default 100), or "
        "UNLIMITED for NC4 files'/>"
        "   <Option name='PROFILE_VARIABLES' type='string' description='Comma "
        "separated list of field names that must be indexed by the profile "
        "dimension'/>"
        "</LayerCreationOptionList>");

    // Make driver config and capabilities available.
#if NETCDF_CORE_HAS_NC2
    poDriver->SetMetadataItem("NETCDF_HAS_NC2", "YES");
#endif
    poDriver->SetMetadataItem("NETCDF_HAS_NC4", "YES");
#ifdef NETCDF_HAS_HDF4
    poDriver->SetMetadataItem("NETCDF_HAS_HDF4", "YES");
#endif

    poDriver->SetMetadataItem("NETCDF_HAS_NETCDF_MEM", "YES");

#ifdef ENABLE_NCDUMP
    poDriver->SetMetadataItem("ENABLE_NCDUMP", "YES");
#endif

    poDriver->SetMetadataItem(GDAL_DCAP_MULTIDIM_RASTER, "YES");

    poDriver->SetMetadataItem(
        GDAL_DMD_MULTIDIM_DATASET_CREATIONOPTIONLIST,
        "<MultiDimDatasetCreationOptionList>"
        "   <Option name='FORMAT' type='string-select' default='NC4'>"
        "     <Value>NC</Value>"
#if NETCDF_CORE_HAS_NC2
        "     <Value>NC2</Value>"
#endif
        "     <Value>NC4</Value>"
        "     <Value>NC4C</Value>"
        "   </Option>"
        "   <Option name='CONVENTIONS' type='string' default='CF-1.6' "
        "description='Value of the Conventions attribute'/>"
        "</MultiDimDatasetCreationOptionList>");

    poDriver->SetMetadataItem(
        GDAL_DMD_MULTIDIM_DIMENSION_CREATIONOPTIONLIST,
        "<MultiDimDimensionCreationOptionList>"
        "   <Option name='UNLIMITED' type='boolean' description='Whether the "
        "dimension should be unlimited' default='false'/>"
        "</MultiDimDimensionCreationOptionList>");

    poDriver->SetMetadataItem(
        GDAL_DMD_MULTIDIM_ARRAY_CREATIONOPTIONLIST,
        "<MultiDimArrayCreationOptionList>"
        "   <Option name='BLOCKSIZE' type='int' description='Block size in "
        "pixels'/>"
        "   <Option name='COMPRESS' type='string-select' default='NONE'>"
        "     <Value>NONE</Value>"
        "     <Value>DEFLATE</Value>"
        "   </Option>"
        "   <Option name='ZLEVEL' type='int' description='DEFLATE compression "
        "level 1-9' default='1'/>"
        "   <Option name='NC_TYPE' type='string-select' default='netCDF data "
        "type'>"
        "     <Value>AUTO</Value>"
        "     <Value>NC_BYTE</Value>"
        "     <Value>NC_INT64</Value>"
        "     <Value>NC_UINT64</Value>"
        "   </Option>"
        "</MultiDimArrayCreationOptionList>");

    poDriver->SetMetadataItem(
        GDAL_DMD_MULTIDIM_ARRAY_OPENOPTIONLIST,
        "<MultiDimArrayOpenOptionList>"
        "   <Option name='USE_DEFAULT_FILL_AS_NODATA' type='boolean' "
        "description='Whether the default fill value should be used as nodata "
        "when there is no _FillValue or missing_value attribute' default='NO'/>"
        "   <Option name='RAW_DATA_CHUNK_CACHE_SIZE' type='integer' "
        "description='The total size of the libnetcdf raw data chunk cache, "
        "in bytes. Only for netCDF4/HDF5 files'/>"
        "   <Option name='CHUNK_SLOTS' type='integer' "
        "description='The number of chunk slots in the libnetcdf raw data "
        "chunk cache. "
        "Only for netCDF4/HDF5 files'/>"
        "   <Option name='PREEMPTION' type='float' min='0' max='1' "
        "description='Indicates how much chunks from libnetcdf chunk cache "
        "that have been fully read are favored for preemption. "
        "Only for netCDF4/HDF5 files'/>"
        "</MultiDimArrayOpenOptionList>");

    poDriver->SetMetadataItem(GDAL_DMD_MULTIDIM_ATTRIBUTE_CREATIONOPTIONLIST,
                              "<MultiDimAttributeCreationOptionList>"
                              "   <Option name='NC_TYPE' type='string-select' "
                              "default='netCDF data type'>"
                              "     <Value>AUTO</Value>"
                              "     <Value>NC_BYTE</Value>"
                              "     <Value>NC_CHAR</Value>"
                              "     <Value>NC_INT64</Value>"
                              "     <Value>NC_UINT64</Value>"
                              "   </Option>"
                              "</MultiDimAttributeCreationOptionList>");

    poDriver->SetMetadataItem(GDAL_DMD_CREATIONFIELDDATATYPES,
                              "Integer Integer64 Real String Date DateTime");
    poDriver->SetMetadataItem(GDAL_DMD_CREATION_FIELD_DEFN_FLAGS,
                              "Comment AlternativeName");

    poDriver->SetMetadataItem(GDAL_DMD_SUPPORTED_SQL_DIALECTS, "OGRSQL SQLITE");

    poDriver->pfnIdentify = netCDFDatasetIdentify;
    poDriver->pfnGetSubdatasetInfoFunc = NCDFDriverGetSubdatasetInfo;
    poDriver->SetMetadataItem(GDAL_DCAP_OPEN, "YES");
    poDriver->SetMetadataItem(GDAL_DCAP_CREATE, "YES");
    poDriver->SetMetadataItem(GDAL_DCAP_CREATECOPY, "YES");
    poDriver->SetMetadataItem(GDAL_DCAP_CREATE_MULTIDIMENSIONAL, "YES");

    poDriver->SetMetadataItem(GDAL_DCAP_UPDATE, "YES");
    poDriver->SetMetadataItem(GDAL_DMD_UPDATE_ITEMS,
                              "GeoTransform SRS "  // if not already set...
                              "DatasetMetadata BandMetadata RasterValues");
}

/************************************************************************/
/*                    DeclareDeferredNetCDFPlugin()                     */
/************************************************************************/

#ifdef PLUGIN_FILENAME
void DeclareDeferredNetCDFPlugin()
{
    if (GDALGetDriverByName(DRIVER_NAME) != nullptr)
    {
        return;
    }
    auto poDriver = new GDALPluginDriverProxy(PLUGIN_FILENAME);
#ifdef PLUGIN_INSTALLATION_MESSAGE
    poDriver->SetMetadataItem(GDAL_DMD_PLUGIN_INSTALLATION_MESSAGE,
                              PLUGIN_INSTALLATION_MESSAGE);
#endif
    netCDFDriverSetCommonMetadata(poDriver);
    GetGDALDriverManager()->DeclareDeferredPluginDriver(poDriver);
}
#endif