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/******************************************************************************
*
* Project: GDAL
* Purpose: "gdal vector check-coverage" subcommand
* Author: Daniel Baston
*
******************************************************************************
* Copyright (c) 2025, ISciences LLC
*
* SPDX-License-Identifier: MIT
****************************************************************************/
#include "gdalalg_vector_check_coverage.h"
#include "cpl_error.h"
#include "gdal_priv.h"
#include "gdalalg_vector_geom.h"
#include "ogr_geometry.h"
#include "ogr_geos.h"
#include <cinttypes>
#ifndef _
#define _(x) (x)
#endif
//! @cond Doxygen_Suppress
GDALVectorCheckCoverageAlgorithm::GDALVectorCheckCoverageAlgorithm(
bool standaloneStep)
: GDALVectorPipelineStepAlgorithm(NAME, DESCRIPTION, HELP_URL,
standaloneStep)
{
AddArg("include-valid", 0,
_("Include valid inputs in output, with empty geometry"),
&m_includeValid);
AddArg("geometry-field", 0, _("Name of geometry field to check"),
&m_geomField);
AddArg("maximum-gap-width", 0, _("Maximum width of a gap to be flagged"),
&m_maximumGapWidth)
.SetMinValueIncluded(0);
}
#if defined HAVE_GEOS && \
(GEOS_VERSION_MAJOR > 3 || \
(GEOS_VERSION_MAJOR == 3 && GEOS_VERSION_MINOR >= 12))
class GDALVectorCheckCoverageOutputDataset final
: public GDALGeosNonStreamingAlgorithmDataset
{
public:
explicit GDALVectorCheckCoverageOutputDataset(double maximumGapWidth,
bool includeValid)
: m_maximumGapWidth(maximumGapWidth), m_includeValid(includeValid)
{
}
~GDALVectorCheckCoverageOutputDataset() override;
bool PolygonsOnly() const override
{
return true;
}
bool SkipEmpty() const override
{
return !m_includeValid;
}
bool ProcessGeos() override
{
// Perform coverage checking
GEOSGeometry *coll = GEOSGeom_createCollection_r(
m_poGeosContext, GEOS_GEOMETRYCOLLECTION, m_apoGeosInputs.data(),
static_cast<unsigned int>(m_apoGeosInputs.size()));
if (coll == nullptr)
{
return false;
}
m_apoGeosInputs.clear();
int geos_result =
GEOSCoverageIsValid_r(m_poGeosContext, coll, m_maximumGapWidth,
&m_poGeosResultAsCollection);
GEOSGeom_destroy_r(m_poGeosContext, coll);
CPLDebug("CoverageIsValid", "%d", geos_result);
return geos_result != 2;
}
private:
const double m_maximumGapWidth;
const bool m_includeValid;
};
GDALVectorCheckCoverageOutputDataset::~GDALVectorCheckCoverageOutputDataset() =
default;
bool GDALVectorCheckCoverageAlgorithm::RunStep(GDALPipelineStepRunContext &)
{
auto poSrcDS = m_inputDataset[0].GetDatasetRef();
auto poDstDS = std::make_unique<GDALVectorCheckCoverageOutputDataset>(
m_maximumGapWidth, m_includeValid);
const bool bSingleLayerOutput = m_inputLayerNames.empty()
? poSrcDS->GetLayerCount() == 1
: m_inputLayerNames.size() == 1;
for (auto &&poSrcLayer : poSrcDS->GetLayers())
{
if (m_inputLayerNames.empty() ||
std::find(m_inputLayerNames.begin(), m_inputLayerNames.end(),
poSrcLayer->GetDescription()) != m_inputLayerNames.end())
{
const auto poSrcLayerDefn = poSrcLayer->GetLayerDefn();
if (poSrcLayerDefn->GetGeomFieldCount() == 0)
{
if (m_inputLayerNames.empty())
continue;
ReportError(CE_Failure, CPLE_AppDefined,
"Specified layer '%s' has no geometry field",
poSrcLayer->GetDescription());
return false;
}
const int geomFieldIndex =
m_geomField.empty()
? 0
: poSrcLayerDefn->GetGeomFieldIndex(m_geomField.c_str());
if (geomFieldIndex == -1)
{
ReportError(CE_Failure, CPLE_AppDefined,
"Specified geometry field '%s' does not exist in "
"layer '%s'",
m_geomField.c_str(), poSrcLayer->GetDescription());
return false;
}
OGRFeatureDefn defn(bSingleLayerOutput
? "invalid_edge"
: std::string("invalid_edge_")
.append(poSrcLayer->GetDescription())
.c_str());
defn.SetGeomType(wkbMultiLineString);
defn.GetGeomFieldDefn(0)->SetSpatialRef(
poSrcLayerDefn->GetGeomFieldDefn(geomFieldIndex)
->GetSpatialRef());
poDstDS->SetSourceGeometryField(geomFieldIndex);
if (!poDstDS->AddProcessedLayer(*poSrcLayer, defn))
{
return false;
}
}
}
m_outputDataset.Set(std::move(poDstDS));
return true;
}
#else
bool GDALVectorCheckCoverageAlgorithm::RunStep(GDALPipelineStepRunContext &)
{
ReportError(CE_Failure, CPLE_AppDefined,
"%s requires GDAL to be built against version 3.12 or later of "
"the GEOS library.",
NAME);
return false;
}
#endif // HAVE_GEOS
GDALVectorCheckCoverageAlgorithmStandalone::
~GDALVectorCheckCoverageAlgorithmStandalone() = default;
//! @endcond
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