Line data    Source code

       1             : /******************************************************************************
       2             :  *
       3             :  * Project:  S-101 driver
       4             :  * Purpose:  Implements OGRS101Driver
       5             :  * Author:   Even Rouault <even dot rouault at spatialys.com>
       6             :  *
       7             :  ******************************************************************************
       8             :  * Copyright (c) 2026, Even Rouault <even dot rouault at spatialys.com>
       9             :  *
      10             :  * SPDX-License-Identifier: MIT
      11             :  ****************************************************************************/
      12             : 
      13             : #include "gdal_frmts.h"
      14             : #include "gdalplugindriverproxy.h"
      15             : 
      16             : #include "ogrsf_frmts.h"
      17             : 
      18             : #include "ogrs101drivercore.h"
      19             : 
      20             : /************************************************************************/
      21             : /*                       OGRS101DriverIdentify()                        */
      22             : /************************************************************************/
      23             : 
      24       61239 : int OGRS101DriverIdentify(GDALOpenInfo *poOpenInfo)
      25             : {
      26       61239 :     constexpr int DDR_LEADER_SIZE = 24;
      27       61239 :     if (poOpenInfo->nHeaderBytes < DDR_LEADER_SIZE)
      28       53788 :         return false;
      29        7451 :     const char *pachLeader = reinterpret_cast<char *>(poOpenInfo->pabyHeader);
      30             :     // Per S-100 10a-4.8.2.1 The DDR Leader
      31        7451 :     constexpr char DIGIT_ZERO = '0';
      32        7451 :     if (pachLeader[5] != '3' ||          // Interchange level
      33        1002 :         pachLeader[6] != 'L' ||          // Leader identifier
      34        1002 :         pachLeader[7] != 'E' ||          // In line code extension indicator
      35        1002 :         pachLeader[8] != '1' ||          // Version number
      36        1002 :         pachLeader[9] != ' ' ||          // Application indicator
      37        1002 :         pachLeader[10] != DIGIT_ZERO ||  // Field control length
      38        1002 :         pachLeader[11] != '9' ||         // Field control length (c'ted)
      39        1002 :         pachLeader[17] != ' ' ||         // Extended character set indicator
      40        1002 :         pachLeader[18] != '!' ||  // Extended character set indicator(c'ted)
      41        1002 :         pachLeader[19] != ' ')    // Extended character set indicator(c'ted)
      42             :     {
      43        6449 :         return false;
      44             :     }
      45             :     // Test for S-101 DSID field structure
      46        2004 :     return strstr(pachLeader, "DSID") != nullptr &&
      47        1002 :            strstr(pachLeader,
      48             :                   "RCNM!RCID!ENSP!ENED!PRSP!PRED!PROF!DSNM!DSTL!DSRD!DSLG!"
      49        1002 :                   "DSAB!DSED\\\\*DSTC") != nullptr;
      50             : }
      51             : 
      52             : /************************************************************************/
      53             : /*                   OGRS101DriverSetCommonMetadata()                   */
      54             : /************************************************************************/
      55             : 
      56        1863 : void OGRS101DriverSetCommonMetadata(GDALDriver *poDriver)
      57             : {
      58        1863 :     poDriver->SetDescription(DRIVER_NAME);
      59             : 
      60        1863 :     poDriver->SetMetadataItem(GDAL_DCAP_VECTOR, "YES");
      61        1863 :     poDriver->SetMetadataItem(GDAL_DMD_LONGNAME, "IHO S-101 (ENC)");
      62        1863 :     poDriver->SetMetadataItem(GDAL_DMD_EXTENSION, "000");
      63        1863 :     poDriver->SetMetadataItem(GDAL_DMD_HELPTOPIC, "drivers/vector/s101.html");
      64        1863 :     poDriver->SetMetadataItem(GDAL_DMD_SUPPORTED_SQL_DIALECTS, "OGRSQL SQLITE");
      65             : 
      66        1863 :     poDriver->SetMetadataItem(GDAL_DCAP_VIRTUALIO, "YES");
      67        1863 :     poDriver->SetMetadataItem(GDAL_DCAP_MULTIPLE_VECTOR_LAYERS, "YES");
      68        1863 :     poDriver->SetMetadataItem(GDAL_DCAP_Z_GEOMETRIES, "YES");
      69             : 
      70        1863 :     poDriver->SetMetadataItem(
      71             :         GDAL_DMD_OPENOPTIONLIST,
      72             :         "<OpenOptionList>"
      73             :         "  <Option name='STRICT' type='boolean' default='YES' "
      74             :         "description='Whether the driver should error out as soon as a "
      75             :         "non-conformity with respect to the S-101 standard is detected. "
      76             :         "In non-strict mode, warnings will be emitted but processing will "
      77             :         "continue if the non-conformity is not fatal.'/>"
      78             :         "  <Option name='UPDATES' type='string-select' "
      79             :         "description='Should update files be "
      80             :         "incorporated into the base data on the fly' default='APPLY'>"
      81             :         "    <Value>APPLY</Value>"
      82             :         "    <Value>IGNORE</Value>"
      83             :         "  </Option>"
      84        1863 :         "</OpenOptionList>");
      85             : 
      86        1863 :     poDriver->pfnIdentify = OGRS101DriverIdentify;
      87        1863 :     poDriver->SetMetadataItem(GDAL_DCAP_OPEN, "YES");
      88        1863 : }
      89             : 
      90             : /************************************************************************/
      91             : /*                    DeclareDeferredOGRS101Plugin()                    */
      92             : /************************************************************************/
      93             : 
      94             : #ifdef PLUGIN_FILENAME
      95             : void DeclareDeferredOGRS101Plugin()
      96             : {
      97             :     if (GDALGetDriverByName(DRIVER_NAME) != nullptr)
      98             :     {
      99             :         return;
     100             :     }
     101             :     auto poDriver = new GDALPluginDriverProxy(PLUGIN_FILENAME);
     102             : #ifdef PLUGIN_INSTALLATION_MESSAGE
     103             :     poDriver->SetMetadataItem(GDAL_DMD_PLUGIN_INSTALLATION_MESSAGE,
     104             :                               PLUGIN_INSTALLATION_MESSAGE);
     105             : #endif
     106             :     OGRS101DriverSetCommonMetadata(poDriver);
     107             :     GetGDALDriverManager()->DeclareDeferredPluginDriver(poDriver);
     108             : }
     109             : #endif