.. _program_listing_file_src_sparsebase_io_mtx_reader.h:

Program Listing for File mtx_reader.h
=====================================

|exhale_lsh| :ref:`Return to documentation for file <file_src_sparsebase_io_mtx_reader.h>` (``src/sparsebase/io/mtx_reader.h``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   #ifndef SPARSEBASE_PROJECT_MTX_READER_H
   #define SPARSEBASE_PROJECT_MTX_READER_H
   #include "sparsebase/config.h"
   #include "sparsebase/io/reader.h"
   
   namespace sparsebase::io {
   #define MMX_PREFIX "%%MatrixMarket"
   
   template <typename IDType, typename NNZType, typename ValueType>
   class MTXReader : public Reader,
                     public ReadsCSR<IDType, NNZType, ValueType>,
                     public ReadsCOO<IDType, NNZType, ValueType>,
                     public ReadsArray<ValueType> {
    public:
     explicit MTXReader(std::string filename, bool convert_to_zero_index = true);
     format::COO<IDType, NNZType, ValueType> *ReadCOO() const override;
     format::CSR<IDType, NNZType, ValueType> *ReadCSR() const override;
     format::Array<ValueType> *ReadArray() const override;
     ~MTXReader() override;
   
    private:
     enum MTXObjectOptions { matrix, vector };
     enum MTXFormatOptions { coordinate, array };
     enum MTXFieldOptions { real, double_field, complex, integer, pattern };
     enum MTXSymmetryOptions {
       general = 0,
       symmetric = 1,
       skew_symmetric = 2,
       hermitian = 3
     };
     struct MTXOptions {
       MTXObjectOptions object;
       MTXFormatOptions format;
       MTXFieldOptions field;
       MTXSymmetryOptions symmetry;
     };
     MTXOptions ParseHeader(std::string header_line) const;
     format::Array<ValueType> *ReadCoordinateIntoArray() const;
     format::Array<ValueType> *ReadArrayIntoArray() const;
     template <bool weighted>
     format::COO<IDType, NNZType, ValueType> *ReadArrayIntoCOO() const;
     template <bool weighted, int symm, bool conv_to_zero>
     format::COO<IDType, NNZType, ValueType> *ReadCoordinateIntoCOO() const;
     std::string filename_;
     bool convert_to_zero_index_;
     MTXOptions options_;
   };
   }  // namespace sparsebase::io
   #ifdef _HEADER_ONLY
   #include "mtx_reader.cc"
   #endif
   #endif  // SPARSEBASE_PROJECT_MTX_READER_H