PeanoTextPatchFileReader.h

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// This file is part of the Peano project. For conditions of distribution and
// use, please see the copyright notice at www.peano-framework.org
#pragma once
 
#include <iosfwd>
#include <string>
#include <vector>
 
namespace tarch {
  namespace reader {
    class PeanoTextPatchFileReader;
  } // namespace reader
} // namespace tarch
 
 
class tarch::reader::PeanoTextPatchFileReader {
  public:
    enum class Format {
      ASCII,
      Binary
    };
 
    struct Header {
      Format format     = Format::ASCII;
      int    dimensions = -1;
    };
 
    struct Patch {
      std::vector<double> offset;
      std::vector<double> size;
 
      int numberOfDoFsPerAxis = 0;
 
      int numberOfUnknowns = 0;
 
      std::vector<double> values;
    };
 
    struct Content {
      Header header;
 
      std::string metaData;
 
      std::vector<Patch> patches;
    };
 
    virtual ~PeanoTextPatchFileReader() = default;
 
    static Header readHeader(const std::string& fileName);
 
    Content read(const std::string& fileName) const;
 
  protected:
    virtual void readValues(
      std::istream&        in,
      int                  numberOfValues,
      std::vector<double>& values
    ) const;
 
    virtual Format getFormat() const;
};