Line data    Source code

       1             : /******************************************************************************
       2             :  *
       3             :  * Project:  OpenGIS Simple Features Reference Implementation
       4             :  * Purpose:  Implements OGRVFKDriver class.
       5             :  * Author:   Martin Landa, landa.martin gmail.com
       6             :  *
       7             :  ******************************************************************************
       8             :  * Copyright (c) 2009-2018, Martin Landa <landa.martin gmail.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 "ogrvfkdrivercore.h"
      19             : 
      20             : /************************************************************************/
      21             : /*                    OGRVFKDriverIdentify()                            */
      22             : /************************************************************************/
      23             : 
      24       53406 : int OGRVFKDriverIdentify(GDALOpenInfo *poOpenInfo)
      25             : 
      26             : {
      27       53406 :     if (poOpenInfo->fpL == nullptr)
      28       50332 :         return FALSE;
      29             : 
      30        3074 :     if (poOpenInfo->nHeaderBytes >= 2 &&
      31        2999 :         STARTS_WITH((const char *)poOpenInfo->pabyHeader, "&H"))
      32          30 :         return TRUE;
      33             : 
      34             :     /* valid datasource can be also SQLite DB previously created by
      35             :        VFK driver, the real check is done by VFKReaderSQLite */
      36        8846 :     if (poOpenInfo->nHeaderBytes >= 100 &&
      37        3080 :         STARTS_WITH((const char *)poOpenInfo->pabyHeader, "SQLite format 3") &&
      38          36 :         !poOpenInfo->IsExtensionEqualToCI("gpkg"))
      39             :     {
      40             :         // The driver is not ready for virtual file systems
      41           5 :         if (STARTS_WITH(poOpenInfo->pszFilename, "/vsi"))
      42           5 :             return FALSE;
      43             : 
      44             :         VSIStatBufL sStat;
      45           8 :         if (VSIStatL(poOpenInfo->pszFilename, &sStat) == 0 &&
      46           4 :             VSI_ISREG(sStat.st_mode))
      47             :         {
      48           4 :             return GDAL_IDENTIFY_UNKNOWN;
      49             :         }
      50             :     }
      51             : 
      52        3039 :     return FALSE;
      53             : }
      54             : 
      55             : /************************************************************************/
      56             : /*                  OGRVFKDriverSetCommonMetadata()                  */
      57             : /************************************************************************/
      58             : 
      59        2109 : void OGRVFKDriverSetCommonMetadata(GDALDriver *poDriver)
      60             : {
      61        2109 :     poDriver->SetDescription(DRIVER_NAME);
      62        2109 :     poDriver->SetMetadataItem(GDAL_DCAP_VECTOR, "YES");
      63        2109 :     poDriver->SetMetadataItem(GDAL_DMD_LONGNAME,
      64        2109 :                               "Czech Cadastral Exchange Data Format");
      65        2109 :     poDriver->SetMetadataItem(GDAL_DMD_EXTENSION, "vfk");
      66        2109 :     poDriver->SetMetadataItem(GDAL_DMD_HELPTOPIC, "drivers/vector/vfk.html");
      67        2109 :     poDriver->SetMetadataItem(GDAL_DMD_SUPPORTED_SQL_DIALECTS, "OGRSQL SQLITE");
      68             : 
      69        2109 :     poDriver->SetMetadataItem(
      70             :         GDAL_DMD_OPENOPTIONLIST,
      71             :         "<OpenOptionList>"
      72             :         "  <Option name='SUPPRESS_GEOMETRY' type='boolean' "
      73             :         "description='whether to suppress geometry' default='NO'/>"
      74             :         "  <Option name='FILE_FIELD' type='boolean' description='whether to "
      75             :         "include VFK filename field' default='NO'/>"
      76        2109 :         "</OpenOptionList>");
      77             : 
      78        2109 :     poDriver->pfnIdentify = OGRVFKDriverIdentify;
      79        2109 :     poDriver->SetMetadataItem(GDAL_DCAP_OPEN, "YES");
      80        2109 : }
      81             : 
      82             : /************************************************************************/
      83             : /*                   DeclareDeferredOGRVFKPlugin()                      */
      84             : /************************************************************************/
      85             : 
      86             : #ifdef PLUGIN_FILENAME
      87        2038 : void DeclareDeferredOGRVFKPlugin()
      88             : {
      89        2038 :     if (GDALGetDriverByName(DRIVER_NAME) != nullptr)
      90             :     {
      91         283 :         return;
      92             :     }
      93        1755 :     auto poDriver = new GDALPluginDriverProxy(PLUGIN_FILENAME);
      94             : #ifdef PLUGIN_INSTALLATION_MESSAGE
      95             :     poDriver->SetMetadataItem(GDAL_DMD_PLUGIN_INSTALLATION_MESSAGE,
      96             :                               PLUGIN_INSTALLATION_MESSAGE);
      97             : #endif
      98        1755 :     OGRVFKDriverSetCommonMetadata(poDriver);
      99        1755 :     GetGDALDriverManager()->DeclareDeferredPluginDriver(poDriver);
     100             : }
     101             : #endif