CachedMzML.h

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//                   OpenMS -- Open-Source Mass Spectrometry
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// Copyright The OpenMS Team -- Eberhard Karls University Tuebingen,
// ETH Zurich, and Freie Universitaet Berlin 2002-2018.
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// $Maintainer: Hannes Roest $
// $Authors: Hannes Roest $
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#pragma once

#include <OpenMS/KERNEL/MSExperiment.h>

#include <fstream>

namespace OpenMS
{

  class OPENMS_DLLAPI CachedmzML
  {

public:

    CachedmzML();

    CachedmzML(const String& filename);

    CachedmzML(const CachedmzML & rhs);

    ~CachedmzML();

    MSSpectrum getSpectrum(Size id);

    MSChromatogram getChromatogram(Size id);

    size_t getNrSpectra() const;

    size_t getNrChromatograms() const;

    const MSExperiment& getMetaData() const
    {
      return meta_ms_experiment_;
    }

    static void store(const String& filename, const PeakMap& map);

    static void load(const String& filename, CachedmzML& map);

protected:

    void load_(const String& filename);

    MSExperiment meta_ms_experiment_;

    std::ifstream ifs_;

    String filename_;

    String filename_cached_;

    std::vector<std::streampos> spectra_index_;
    std::vector<std::streampos> chrom_index_;

  };
}