/******************************************************************************

 *

 * Project:  PDF driver

 * Purpose:  GDALDataset driver for PDF dataset.

 * Author:   Even Rouault, <even dot rouault at spatialys.com>

 *

 ******************************************************************************

 * Copyright (c) 2010-2013, Even Rouault <even dot rouault at spatialys.com>

 *

 * SPDX-License-Identifier: MIT

 ****************************************************************************/

#ifndef PDFIO_H_INCLUDED

#define PDFIO_H_INCLUDED

#include "cpl_vsi_virtual.h"

/************************************************************************/

/*                         VSIPDFFileStream                             */

/************************************************************************/

#define BUFFER_SIZE 1024

class VSIPDFFileStream final : public BaseStream

{

  public:

    VSIPDFFileStream(VSILFILE *f, const char *pszFilename, Object &&dictA);

    VSIPDFFileStream(VSIPDFFileStream *poParent, vsi_l_offset startA,

                     bool limitedA, vsi_l_offset lengthA, Object &&dictA);

    virtual ~VSIPDFFileStream();

    virtual BaseStream *copy() override;

#if POPPLER_MAJOR_VERSION > 25 ||                                              \

    (POPPLER_MAJOR_VERSION == 25 && POPPLER_MINOR_VERSION >= 5)

    virtual std::unique_ptr<Stream> makeSubStream(Goffset startA, bool limitedA,

                                                  Goffset lengthA,

                                                  Object &&dictA) override;

#else

    virtual Stream *makeSubStream(Goffset startA, bool limitedA,

                                  Goffset lengthA, Object &&dictA) override;

#endif

    virtual Goffset getPos() override;

    virtual Goffset getStart() override;

    virtual void setPos(Goffset pos, int dir = 0) override;

    virtual void moveStart(Goffset delta) override;

    virtual StreamKind getKind() const override;

    virtual GooString *getFileName() override;

    virtual int getChar() override;

    virtual int getUnfilteredChar() override;

    virtual int lookChar() override;

#if POPPLER_MAJOR_VERSION > 25 ||                                              \

    (POPPLER_MAJOR_VERSION == 25 && POPPLER_MINOR_VERSION >= 2)

    virtual bool reset() override;

#else

    virtual void reset() override;

#endif

    static void resetNoCheckReturnValue(Stream *str)

    {

#if POPPLER_MAJOR_VERSION > 25 ||                                              \

    (POPPLER_MAJOR_VERSION == 25 && POPPLER_MINOR_VERSION >= 2)

        CPL_IGNORE_RET_VAL(str->reset());

#else

        str->reset();

#endif

    }

#if POPPLER_MAJOR_VERSION > 25 ||                                              \

    (POPPLER_MAJOR_VERSION == 25 && POPPLER_MINOR_VERSION >= 3)

    virtual bool unfilteredReset() override;

#else

    virtual void unfilteredReset() override;

#endif

    virtual void close() override;

    bool FoundLinearizedHint() const

    {

        return bFoundLinearizedHint;

    }

  private:

    virtual bool hasGetChars() override;

    virtual int getChars(int nChars, unsigned char *buffer) override;

    VSIPDFFileStream *poParent = nullptr;

    GooString *poFilename = nullptr;

    VSILFILE *f = nullptr;

    vsi_l_offset nStart = 0;

    bool bLimited = false;

    vsi_l_offset nLength = 0;

    vsi_l_offset nCurrentPos = VSI_L_OFFSET_MAX;

    int bHasSavedPos = FALSE;

    vsi_l_offset nSavedPos = 0;

    GByte abyBuffer[BUFFER_SIZE];

    int nPosInBuffer = -1;

    int nBufferLength = -1;

    bool bFoundLinearizedHint = false;

    int FillBuffer();

    CPL_DISALLOW_COPY_ASSIGN(VSIPDFFileStream)

};

#endif  // PDFIO_H_INCLUDED