DecompressingInputStream.h

Go to the documentation of this file.

// Copyright (c) 2002-present, OpenMS Inc. -- EKU Tuebingen, ETH Zurich, and FU Berlin
// SPDX-License-Identifier: BSD-3-Clause
//
// --------------------------------------------------------------------------
// $Maintainer: Timo Sachsenberg $
// $Authors: Julianus Pfeuffer, Timo Sachsenberg $
// --------------------------------------------------------------------------
 
#pragma once
 
#include <OpenMS/FORMAT/InputStream.h>
 
#include <memory>
#include <optional>
#include <string>
 
namespace OpenMS
{
  class OPENMS_DLLAPI DecompressingInputStream :
    public InputStream
  {
public:
    enum class Format { GZIP, BZIP2 };
 
    static std::optional<Format> detect(const unsigned char* head, Size size);
 
    DecompressingInputStream(std::unique_ptr<InputStream> source, Format format, const std::string& name);
 
    ~DecompressingInputStream() override;
 
    UInt64 curPos() const override;
 
    Size readBytes(unsigned char* to_fill, Size max_to_read) override;
 
    void cancel() override;
 
    DecompressingInputStream(const DecompressingInputStream&) = delete;
    DecompressingInputStream& operator=(const DecompressingInputStream&) = delete;
 
private:
    struct Impl;
    std::unique_ptr<Impl> impl_; 
  };
 
} // namespace OpenMS