Line data    Source code

       1             : /******************************************************************************
       2             :  *
       3             :  * Project:  GDAL
       4             :  * Purpose:  gdal "vector pipeline" subcommand
       5             :  * Author:   Even Rouault <even dot rouault at spatialys.com>
       6             :  *
       7             :  ******************************************************************************
       8             :  * Copyright (c) 2024, Even Rouault <even dot rouault at spatialys.com>
       9             :  *
      10             :  * SPDX-License-Identifier: MIT
      11             :  ****************************************************************************/
      12             : 
      13             : #ifndef GDALALG_VECTOR_PIPELINE_INCLUDED
      14             : #define GDALALG_VECTOR_PIPELINE_INCLUDED
      15             : 
      16             : #include "gdalalgorithm.h"
      17             : #include "gdalalg_abstract_pipeline.h"
      18             : 
      19             : //! @cond Doxygen_Suppress
      20             : 
      21             : /************************************************************************/
      22             : /*                GDALVectorPipelineStepAlgorithm                       */
      23             : /************************************************************************/
      24             : 
      25             : class GDALVectorPipelineStepAlgorithm /* non final */ : public GDALAlgorithm
      26             : {
      27             :   protected:
      28             :     GDALVectorPipelineStepAlgorithm(const std::string &name,
      29             :                                     const std::string &description,
      30             :                                     const std::string &helpURL,
      31             :                                     bool standaloneStep);
      32             : 
      33             :     friend class GDALVectorPipelineAlgorithm;
      34             :     friend class GDALAbstractPipelineAlgorithm<GDALVectorPipelineStepAlgorithm>;
      35             : 
      36             :     virtual bool RunStep(GDALProgressFunc pfnProgress, void *pProgressData) = 0;
      37             : 
      38             :     void AddInputArgs(bool hiddenForCLI);
      39             :     void AddOutputArgs(bool hiddenForCLI, bool shortNameOutputLayerAllowed);
      40             : 
      41             :     bool m_standaloneStep = false;
      42             : 
      43             :     // Input arguments
      44             :     GDALArgDatasetValue m_inputDataset{};
      45             :     std::vector<std::string> m_openOptions{};
      46             :     std::vector<std::string> m_inputFormats{};
      47             :     std::vector<std::string> m_inputLayerNames{};
      48             : 
      49             :     // Output arguments
      50             :     GDALArgDatasetValue m_outputDataset{};
      51             :     std::string m_format{};
      52             :     std::vector<std::string> m_creationOptions{};
      53             :     std::vector<std::string> m_layerCreationOptions{};
      54             :     bool m_overwrite = false;
      55             :     bool m_update = false;
      56             :     bool m_overwriteLayer = false;
      57             :     bool m_appendLayer = false;
      58             :     std::string m_outputLayerName{};
      59             : 
      60             :   private:
      61             :     bool RunImpl(GDALProgressFunc pfnProgress, void *pProgressData) override;
      62             : };
      63             : 
      64             : /************************************************************************/
      65             : /*                     GDALVectorPipelineAlgorithm                      */
      66             : /************************************************************************/
      67             : 
      68             : // This is an easter egg to pay tribute to PROJ pipeline syntax
      69             : // We accept "gdal vector +gdal=pipeline +step +gdal=read +input=poly.gpkg +step +gdal=reproject +dst-crs=EPSG:32632 +step +gdal=write +output=out.gpkg +overwrite"
      70             : // as an alternative to (recommended):
      71             : // "gdal vector pipeline ! read poly.gpkg ! reproject--dst-crs=EPSG:32632 ! write out.gpkg --overwrite"
      72             : #define GDAL_PIPELINE_PROJ_NOSTALGIA
      73             : 
      74             : class GDALVectorPipelineAlgorithm final
      75             :     : public GDALAbstractPipelineAlgorithm<GDALVectorPipelineStepAlgorithm>
      76             : {
      77             :   public:
      78             :     static constexpr const char *NAME = "pipeline";
      79             :     static constexpr const char *DESCRIPTION = "Process a vector dataset.";
      80             :     static constexpr const char *HELP_URL =
      81             :         "/programs/gdal_vector_pipeline.html";
      82             : 
      83          85 :     static std::vector<std::string> GetAliases()
      84             :     {
      85             :         return {
      86             : #ifdef GDAL_PIPELINE_PROJ_NOSTALGIA
      87             :             GDALAlgorithmRegistry::HIDDEN_ALIAS_SEPARATOR,
      88             :             "+pipeline",
      89             :             "+gdal=pipeline",
      90             : #endif
      91         340 :         };
      92             :     }
      93             : 
      94             :     GDALVectorPipelineAlgorithm();
      95             : 
      96             :     bool
      97             :     ParseCommandLineArguments(const std::vector<std::string> &args) override;
      98             : 
      99             :     std::string GetUsageForCLI(bool shortUsage,
     100             :                                const UsageOptions &usageOptions) const override;
     101             : 
     102             :   protected:
     103          46 :     GDALArgDatasetValue &GetOutputDataset() override
     104             :     {
     105          46 :         return m_outputDataset;
     106             :     }
     107             : };
     108             : 
     109             : //! @endcond
     110             : 
     111             : #endif