Line data    Source code

       1             : /******************************************************************************
       2             :  *
       3             :  * Project:  SDTS Translator
       4             :  * Purpose:  Implements OGRSDTSDriver
       5             :  * Author:   Frank Warmerdam, warmerdam@pobox.com
       6             :  *
       7             :  ******************************************************************************
       8             :  * Copyright (c) 1999, Frank Warmerdam
       9             :  *
      10             :  * Permission is hereby granted, free of charge, to any person obtaining a
      11             :  * copy of this software and associated documentation files (the "Software"),
      12             :  * to deal in the Software without restriction, including without limitation
      13             :  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      14             :  * and/or sell copies of the Software, and to permit persons to whom the
      15             :  * Software is furnished to do so, subject to the following conditions:
      16             :  *
      17             :  * The above copyright notice and this permission notice shall be included
      18             :  * in all copies or substantial portions of the Software.
      19             :  *
      20             :  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
      21             :  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      22             :  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
      23             :  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      24             :  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
      25             :  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
      26             :  * DEALINGS IN THE SOFTWARE.
      27             :  ****************************************************************************/
      28             : 
      29             : #include "ogr_sdts.h"
      30             : #include "cpl_conv.h"
      31             : 
      32             : /************************************************************************/
      33             : /*                                Open()                                */
      34             : /************************************************************************/
      35             : 
      36       26501 : static GDALDataset *OGRSDTSDriverOpen(GDALOpenInfo *poOpenInfo)
      37             : 
      38             : {
      39       26501 :     if (!EQUAL(CPLGetExtension(poOpenInfo->pszFilename), "DDF"))
      40       26500 :         return nullptr;
      41           1 :     if (poOpenInfo->nHeaderBytes < 10)
      42           0 :         return nullptr;
      43           1 :     const char *pachLeader = (const char *)poOpenInfo->pabyHeader;
      44           1 :     if ((pachLeader[5] != '1' && pachLeader[5] != '2' &&
      45           0 :          pachLeader[5] != '3') ||
      46           1 :         pachLeader[6] != 'L' || (pachLeader[8] != '1' && pachLeader[8] != ' '))
      47             :     {
      48           0 :         return nullptr;
      49             :     }
      50             : 
      51           1 :     OGRSDTSDataSource *poDS = new OGRSDTSDataSource();
      52           1 :     if (!poDS->Open(poOpenInfo->pszFilename, TRUE))
      53             :     {
      54           0 :         delete poDS;
      55           0 :         poDS = nullptr;
      56             :     }
      57             : 
      58           1 :     if (poDS != nullptr && poOpenInfo->eAccess == GA_Update)
      59             :     {
      60           0 :         CPLError(CE_Failure, CPLE_OpenFailed,
      61             :                  "SDTS Driver doesn't support update.");
      62           0 :         delete poDS;
      63           0 :         poDS = nullptr;
      64             :     }
      65             : 
      66           1 :     return poDS;
      67             : }
      68             : 
      69             : /************************************************************************/
      70             : /*                           RegisterOGRSDTS()                          */
      71             : /************************************************************************/
      72             : 
      73        1512 : void RegisterOGRSDTS()
      74             : 
      75             : {
      76        1512 :     if (GDALGetDriverByName("OGR_SDTS") != nullptr)
      77         295 :         return;
      78             : 
      79        1217 :     GDALDriver *poDriver = new GDALDriver();
      80             : 
      81        1217 :     poDriver->SetDescription("OGR_SDTS");
      82        1217 :     poDriver->SetMetadataItem(GDAL_DCAP_VECTOR, "YES");
      83        1217 :     poDriver->SetMetadataItem(GDAL_DMD_LONGNAME, "SDTS");
      84        1217 :     poDriver->SetMetadataItem(GDAL_DMD_HELPTOPIC, "drivers/vector/sdts.html");
      85        1217 :     poDriver->SetMetadataItem(GDAL_DCAP_VIRTUALIO, "YES");
      86        1217 :     poDriver->SetMetadataItem(GDAL_DMD_SUPPORTED_SQL_DIALECTS, "OGRSQL SQLITE");
      87             : 
      88        1217 :     poDriver->pfnOpen = OGRSDTSDriverOpen;
      89             : 
      90        1217 :     GetGDALDriverManager()->RegisterDriver(poDriver);
      91             : }