Line data    Source code

       1             : /******************************************************************************
       2             :  *
       3             :  * Project:  OpenGIS Simple Features Reference Implementation
       4             :  * Purpose:  Implements OGRGmtDriver class.
       5             :  * Author:   Frank Warmerdam, warmerdam@pobox.com
       6             :  *
       7             :  ******************************************************************************
       8             :  * Copyright (c) 2007, Frank Warmerdam <warmerdam@pobox.com>
       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_gmt.h"
      30             : #include "cpl_conv.h"
      31             : #include "cpl_string.h"
      32             : 
      33             : /************************************************************************/
      34             : /*                    OGRGMTDriverIdentify()                            */
      35             : /************************************************************************/
      36             : 
      37       44293 : static int OGRGMTDriverIdentify(GDALOpenInfo *poOpenInfo)
      38             : 
      39             : {
      40       44293 :     const char *pszHeader =
      41             :         reinterpret_cast<const char *>(poOpenInfo->pabyHeader);
      42       44293 :     if (poOpenInfo->nHeaderBytes && strstr(pszHeader, "@VGMT") != nullptr)
      43          72 :         return true;
      44             : 
      45       44221 :     if (EQUAL(CPLGetExtension(poOpenInfo->pszFilename), "GMT"))
      46         108 :         return true;
      47             : 
      48       44113 :     return false;
      49             : }
      50             : 
      51             : /************************************************************************/
      52             : /*                           OGRGMTDriverOpen()                         */
      53             : /************************************************************************/
      54             : 
      55          72 : static GDALDataset *OGRGMTDriverOpen(GDALOpenInfo *poOpenInfo)
      56             : 
      57             : {
      58          72 :     if (!OGRGMTDriverIdentify(poOpenInfo))
      59           0 :         return nullptr;
      60             : 
      61          72 :     OGRGmtDataSource *poDS = new OGRGmtDataSource();
      62             : 
      63          72 :     if (!poDS->Open(poOpenInfo->pszFilename, nullptr, nullptr,
      64          72 :                     poOpenInfo->eAccess == GA_Update))
      65             :     {
      66          35 :         delete poDS;
      67          35 :         return nullptr;
      68             :     }
      69             : 
      70          37 :     return poDS;
      71             : }
      72             : 
      73             : /************************************************************************/
      74             : /*                         OGRGMTDriverCreate()                         */
      75             : /************************************************************************/
      76             : 
      77             : static GDALDataset *
      78          36 : OGRGMTDriverCreate(const char *pszName, CPL_UNUSED int nBands,
      79             :                    CPL_UNUSED int nXSize, CPL_UNUSED int nYSize,
      80             :                    CPL_UNUSED GDALDataType eDT, char **papszOptions)
      81             : {
      82          36 :     OGRGmtDataSource *poDS = new OGRGmtDataSource();
      83             : 
      84          36 :     if (poDS->Create(pszName, papszOptions))
      85          36 :         return poDS;
      86             : 
      87           0 :     delete poDS;
      88           0 :     return nullptr;
      89             : }
      90             : 
      91             : /************************************************************************/
      92             : /*                           RegisterOGRGMT()                           */
      93             : /************************************************************************/
      94             : 
      95        1520 : void RegisterOGRGMT()
      96             : 
      97             : {
      98        1520 :     if (GDALGetDriverByName("OGR_GMT") != nullptr)
      99         301 :         return;
     100             : 
     101        1219 :     GDALDriver *poDriver = new GDALDriver();
     102        1219 :     poDriver->SetDescription("OGR_GMT");
     103        1219 :     poDriver->SetMetadataItem(GDAL_DCAP_VECTOR, "YES");
     104        1219 :     poDriver->SetMetadataItem(GDAL_DCAP_CREATE_LAYER, "YES");
     105        1219 :     poDriver->SetMetadataItem(GDAL_DCAP_CREATE_FIELD, "YES");
     106        1219 :     poDriver->SetMetadataItem(GDAL_DMD_LONGNAME, "GMT ASCII Vectors (.gmt)");
     107        1219 :     poDriver->SetMetadataItem(GDAL_DMD_EXTENSION, "gmt");
     108        1219 :     poDriver->SetMetadataItem(GDAL_DMD_HELPTOPIC, "drivers/vector/gmt.html");
     109        1219 :     poDriver->SetMetadataItem(GDAL_DCAP_VIRTUALIO, "YES");
     110        1219 :     poDriver->SetMetadataItem(GDAL_DCAP_Z_GEOMETRIES, "YES");
     111        1219 :     poDriver->SetMetadataItem(GDAL_DMD_SUPPORTED_SQL_DIALECTS, "OGRSQL SQLITE");
     112             : 
     113        1219 :     poDriver->pfnOpen = OGRGMTDriverOpen;
     114        1219 :     poDriver->pfnIdentify = OGRGMTDriverIdentify;
     115        1219 :     poDriver->pfnCreate = OGRGMTDriverCreate;
     116             : 
     117        1219 :     GetGDALDriverManager()->RegisterDriver(poDriver);
     118             : }