StreamerFileIO.h

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#ifndef IOPool_Streamer_StreamerFileIO_h
#define IOPool_Streamer_StreamerFileIO_h

#include "IOPool/Streamer/interface/MsgTools.h"
#include "FWCore/Utilities/interface/propagate_const.h"
#include <memory>
#include <iosfwd>
#include <string>

//-------------------------------------------------------
namespace edm::streamer {
  class OutputFile
  {
  public:
    explicit OutputFile(const std::string& name, uint32 padding = 0);
    ~OutputFile();

    bool write(const char* ptr, size_t n, bool doPadding = false);
    bool writePadding();

    std::string fileName() const { return filename_; }
    uint64 current_offset() const { return current_offset_; }
    uint32 adler32() const { return (adlerb_ << 16) | adlera_; }

    void set_do_adler(bool v) { do_adler_ = v; }
    void set_current_offset(uint64 v) { current_offset_ = v; }
    void close();

  private:
    uint64 current_offset_; 
    bool do_adler_;
    uint32 adlera_;
    uint32 adlerb_;
    uint32 padding_;

    edm::propagate_const<std::shared_ptr<std::ofstream>> ost_;
    std::string filename_;
    std::unique_ptr<char[]> paddingBuf_;
  };
}  // namespace edm::streamer
#endif