Line data    Source code

       1             : /******************************************************************************
       2             :  *
       3             :  * Project:  UK NTF Reader
       4             :  * Purpose:  Implements OGRNTFDriver
       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 "ntf.h"
      30             : #include "cpl_conv.h"
      31             : 
      32             : /************************************************************************/
      33             : /* ==================================================================== */
      34             : /*                            OGRNTFDriver                              */
      35             : /* ==================================================================== */
      36             : /************************************************************************/
      37             : 
      38             : /************************************************************************/
      39             : /*                                Open()                                */
      40             : /************************************************************************/
      41             : 
      42       26532 : static GDALDataset *OGRNTFDriverOpen(GDALOpenInfo *poOpenInfo)
      43             : 
      44             : {
      45       26532 :     if (!poOpenInfo->bStatOK)
      46       21063 :         return nullptr;
      47             : 
      48        5469 :     if (poOpenInfo->nHeaderBytes != 0)
      49             :     {
      50        4808 :         if (poOpenInfo->nHeaderBytes < 80)
      51         273 :             return nullptr;
      52        4535 :         const char *pszHeader = (const char *)poOpenInfo->pabyHeader;
      53        4535 :         if (!STARTS_WITH_CI(pszHeader, "01"))
      54        4524 :             return nullptr;
      55             : 
      56          11 :         int j = 0;  // Used after for.
      57         891 :         for (; j < 80; j++)
      58             :         {
      59         880 :             if (pszHeader[j] == 10 || pszHeader[j] == 13)
      60             :                 break;
      61             :         }
      62             : 
      63          11 :         if (j == 80 || pszHeader[j - 1] != '%')
      64          11 :             return nullptr;
      65             :     }
      66             : 
      67         661 :     OGRNTFDataSource *poDS = new OGRNTFDataSource;
      68         661 :     if (!poDS->Open(poOpenInfo->pszFilename, TRUE))
      69             :     {
      70         661 :         delete poDS;
      71         661 :         poDS = nullptr;
      72             :     }
      73             : 
      74         661 :     if (poDS != nullptr && poOpenInfo->eAccess == GA_Update)
      75             :     {
      76           0 :         CPLError(CE_Failure, CPLE_OpenFailed,
      77             :                  "NTF Driver doesn't support update.");
      78           0 :         delete poDS;
      79           0 :         poDS = nullptr;
      80             :     }
      81             : 
      82         661 :     return poDS;
      83             : }
      84             : 
      85             : /************************************************************************/
      86             : /*                           RegisterOGRNTF()                           */
      87             : /************************************************************************/
      88             : 
      89        1520 : void RegisterOGRNTF()
      90             : 
      91             : {
      92        1520 :     if (GDALGetDriverByName("UK .NTF") != nullptr)
      93         301 :         return;
      94             : 
      95        1219 :     GDALDriver *poDriver = new GDALDriver();
      96             : 
      97        1219 :     poDriver->SetDescription("UK .NTF");
      98        1219 :     poDriver->SetMetadataItem(GDAL_DCAP_VECTOR, "YES");
      99        1219 :     poDriver->SetMetadataItem(GDAL_DMD_LONGNAME, "UK .NTF");
     100        1219 :     poDriver->SetMetadataItem(GDAL_DMD_HELPTOPIC, "drivers/vector/ntf.html");
     101        1219 :     poDriver->SetMetadataItem(GDAL_DCAP_VIRTUALIO, "YES");
     102        1219 :     poDriver->SetMetadataItem(GDAL_DCAP_Z_GEOMETRIES, "YES");
     103        1219 :     poDriver->SetMetadataItem(GDAL_DMD_SUPPORTED_SQL_DIALECTS, "OGRSQL SQLITE");
     104             : 
     105        1219 :     poDriver->pfnOpen = OGRNTFDriverOpen;
     106             : 
     107        1219 :     GetGDALDriverManager()->RegisterDriver(poDriver);
     108             : }