Line data    Source code

       1             : /******************************************************************************
       2             :  *
       3             :  * Project:  OGR
       4             :  * Purpose:  Convenience function for parsing with Expat library
       5             :  * Author:   Even Rouault, even dot rouault at spatialys.com
       6             :  *
       7             :  ******************************************************************************
       8             :  * Copyright (c) 2009, Even Rouault <even dot rouault at spatialys.com>
       9             :  *
      10             :  * SPDX-License-Identifier: MIT
      11             :  ****************************************************************************/
      12             : 
      13             : #ifndef OGR_EXPATH_INCLUDED
      14             : #define OGR_EXPATH_INCLUDED
      15             : 
      16             : #ifdef HAVE_EXPAT
      17             : 
      18             : #include "cpl_port.h"
      19             : #include <expat.h>
      20             : 
      21             : #include <memory>
      22             : 
      23             : /* Compatibility stuff for expat >= 1.95.0 and < 1.95.7 */
      24             : #ifndef XMLCALL
      25             : #define XMLCALL
      26             : #endif
      27             : #ifndef XML_STATUS_OK
      28             : #define XML_STATUS_OK 1
      29             : #define XML_STATUS_ERROR 0
      30             : #endif
      31             : 
      32             : #undef XML_FALSE
      33             : #define XML_FALSE static_cast<XML_Bool>(0)
      34             : 
      35             : #undef XML_TRUE
      36             : #define XML_TRUE static_cast<XML_Bool>(1)
      37             : 
      38             : /* XML_StopParser only available for expat >= 1.95.8 */
      39             : #if !defined(XML_MAJOR_VERSION) ||                                             \
      40             :     (XML_MAJOR_VERSION * 10000 + XML_MINOR_VERSION * 100 +                     \
      41             :      XML_MICRO_VERSION) < 19508
      42             : #define XML_StopParser(parser, resumable)
      43             : #warning                                                                       \
      44             :     "Expat version is too old and does not have XML_StopParser. Corrupted files could hang OGR"
      45             : #endif
      46             : 
      47             : /* Only for internal use ! */
      48             : XML_Parser CPL_DLL OGRCreateExpatXMLParser(void);
      49             : 
      50             : //
      51             : //! @cond Doxygen_Suppress
      52             : struct CPL_DLL OGRExpatUniquePtrDeleter
      53             : {
      54         199 :     void operator()(XML_Parser oParser) const
      55             :     {
      56         199 :         XML_ParserFree(oParser);
      57         199 :     }
      58             : };
      59             : 
      60             : //! @endcond
      61             : 
      62             : /** Unique pointer type for XML_Parser.
      63             :  * @since GDAL 3.2
      64             :  */
      65             : using OGRExpatUniquePtr =
      66             :     std::unique_ptr<XML_ParserStruct, OGRExpatUniquePtrDeleter>;
      67             : 
      68             : #endif /* HAVE_EXPAT */
      69             : 
      70             : #endif /* OGR_EXPATH_INCLUDED */