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

 *

 * Project:  OGR

 * Purpose:  Convenience function for parsing with Expat library

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

 *

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

 * Copyright (c) 2009, Even Rouault <even dot rouault at spatialys.com>

 *

 * SPDX-License-Identifier: MIT

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

#ifndef OGR_EXPATH_INCLUDED

#define OGR_EXPATH_INCLUDED

#ifdef HAVE_EXPAT

#include "cpl_port.h"

#include <expat.h>

#include <memory>

/* Compatibility stuff for expat >= 1.95.0 and < 1.95.7 */

#ifndef XMLCALL

#define XMLCALL

#endif

#ifndef XML_STATUS_OK

#define XML_STATUS_OK 1

#define XML_STATUS_ERROR 0

#endif

#undef XML_FALSE

#define XML_FALSE static_cast<XML_Bool>(0)

#undef XML_TRUE

#define XML_TRUE static_cast<XML_Bool>(1)

/* XML_StopParser only available for expat >= 1.95.8 */

#if !defined(XML_MAJOR_VERSION) ||                                             \

    (XML_MAJOR_VERSION * 10000 + XML_MINOR_VERSION * 100 +                     \

     XML_MICRO_VERSION) < 19508

#define XML_StopParser(parser, resumable)

#warning                                                                       \

    "Expat version is too old and does not have XML_StopParser. Corrupted files could hang OGR"

#endif

/* Only for internal use ! */

XML_Parser CPL_DLL OGRCreateExpatXMLParser(void);

//

//! @cond Doxygen_Suppress

struct CPL_DLL OGRExpatUniquePtrDeleter

{

    void operator()(XML_Parser oParser) const

    {

        XML_ParserFree(oParser);

    }

};

//! @endcond

/** Unique pointer type for XML_Parser.

 * @since GDAL 3.2

 */

using OGRExpatUniquePtr =

    std::unique_ptr<XML_ParserStruct, OGRExpatUniquePtrDeleter>;

#endif /* HAVE_EXPAT */

#endif /* OGR_EXPATH_INCLUDED */