Line data    Source code

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