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             :  * Permission is hereby granted, free of charge, to any person
      11             :  * obtaining a copy of this software and associated documentation
      12             :  * files (the "Software"), to deal in the Software without
      13             :  * restriction, including without limitation the rights to use, copy,
      14             :  * modify, merge, publish, distribute, sublicense, and/or sell copies
      15             :  * of the Software, and to permit persons to whom the Software is
      16             :  * furnished to do so, subject to the following conditions:
      17             :  *
      18             :  * The above copyright notice and this permission notice shall be
      19             :  * included in all copies or substantial portions of the Software.
      20             :  *
      21             :  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
      22             :  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
      23             :  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
      24             :  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
      25             :  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
      26             :  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
      27             :  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
      28             :  * SOFTWARE.
      29             :  ****************************************************************************/
      30             : 
      31             : #include "ogrsf_frmts.h"
      32             : 
      33             : #include "ogrvfkdrivercore.h"
      34             : 
      35             : /************************************************************************/
      36             : /*                    OGRVFKDriverIdentify()                            */
      37             : /************************************************************************/
      38             : 
      39       42460 : int OGRVFKDriverIdentify(GDALOpenInfo *poOpenInfo)
      40             : 
      41             : {
      42       42460 :     if (poOpenInfo->fpL == nullptr)
      43       40172 :         return FALSE;
      44             : 
      45        2288 :     if (poOpenInfo->nHeaderBytes >= 2 &&
      46        2226 :         STARTS_WITH((const char *)poOpenInfo->pabyHeader, "&H"))
      47          30 :         return TRUE;
      48             : 
      49             :     /* valid datasource can be also SQLite DB previously created by
      50             :        VFK driver, the real check is done by VFKReaderSQLite */
      51        6534 :     if (poOpenInfo->nHeaderBytes >= 100 &&
      52        2264 :         STARTS_WITH((const char *)poOpenInfo->pabyHeader, "SQLite format 3") &&
      53           6 :         !EQUAL(CPLGetExtension(poOpenInfo->pszFilename), "gpkg"))
      54             :     {
      55             :         // The driver is not ready for virtual file systems
      56           6 :         if (STARTS_WITH(poOpenInfo->pszFilename, "/vsi"))
      57           6 :             return FALSE;
      58             : 
      59             :         VSIStatBufL sStat;
      60          10 :         if (VSIStatL(poOpenInfo->pszFilename, &sStat) == 0 &&
      61           5 :             VSI_ISREG(sStat.st_mode))
      62             :         {
      63           5 :             return GDAL_IDENTIFY_UNKNOWN;
      64             :         }
      65             :     }
      66             : 
      67        2252 :     return FALSE;
      68             : }
      69             : 
      70             : /************************************************************************/
      71             : /*                  OGRVFKDriverSetCommonMetadata()                  */
      72             : /************************************************************************/
      73             : 
      74        1227 : void OGRVFKDriverSetCommonMetadata(GDALDriver *poDriver)
      75             : {
      76        1227 :     poDriver->SetDescription(DRIVER_NAME);
      77        1227 :     poDriver->SetMetadataItem(GDAL_DCAP_VECTOR, "YES");
      78        1227 :     poDriver->SetMetadataItem(GDAL_DMD_LONGNAME,
      79        1227 :                               "Czech Cadastral Exchange Data Format");
      80        1227 :     poDriver->SetMetadataItem(GDAL_DMD_EXTENSION, "vfk");
      81        1227 :     poDriver->SetMetadataItem(GDAL_DMD_HELPTOPIC, "drivers/vector/vfk.html");
      82        1227 :     poDriver->SetMetadataItem(GDAL_DMD_SUPPORTED_SQL_DIALECTS, "OGRSQL SQLITE");
      83             : 
      84        1227 :     poDriver->SetMetadataItem(
      85             :         GDAL_DMD_OPENOPTIONLIST,
      86             :         "<OpenOptionList>"
      87             :         "  <Option name='SUPPRESS_GEOMETRY' type='boolean' "
      88             :         "description='whether to suppress geometry' default='NO'/>"
      89             :         "  <Option name='FILE_FIELD' type='boolean' description='whether to "
      90             :         "include VFK filename field' default='NO'/>"
      91        1227 :         "</OpenOptionList>");
      92             : 
      93        1227 :     poDriver->pfnIdentify = OGRVFKDriverIdentify;
      94        1227 :     poDriver->SetMetadataItem(GDAL_DCAP_OPEN, "YES");
      95        1227 : }
      96             : 
      97             : /************************************************************************/
      98             : /*                   DeclareDeferredOGRVFKPlugin()                      */
      99             : /************************************************************************/
     100             : 
     101             : #ifdef PLUGIN_FILENAME
     102        1520 : void DeclareDeferredOGRVFKPlugin()
     103             : {
     104        1520 :     if (GDALGetDriverByName(DRIVER_NAME) != nullptr)
     105             :     {
     106         301 :         return;
     107             :     }
     108        1219 :     auto poDriver = new GDALPluginDriverProxy(PLUGIN_FILENAME);
     109             : #ifdef PLUGIN_INSTALLATION_MESSAGE
     110             :     poDriver->SetMetadataItem(GDAL_DMD_PLUGIN_INSTALLATION_MESSAGE,
     111             :                               PLUGIN_INSTALLATION_MESSAGE);
     112             : #endif
     113        1219 :     OGRVFKDriverSetCommonMetadata(poDriver);
     114        1219 :     GetGDALDriverManager()->DeclareDeferredPluginDriver(poDriver);
     115             : }
     116             : #endif