Line data    Source code

       1             : /******************************************************************************
       2             :  *
       3             :  * Project:  OGR
       4             :  * Purpose:  OGRAVCE00Driver implementation (Arc/Info E00ary Coverages)
       5             :  * Author:   Frank Warmerdam, warmerdam@pobox.com
       6             :  *
       7             :  ******************************************************************************
       8             :  * Copyright (c) 2002, 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_avc.h"
      30             : 
      31             : /************************************************************************/
      32             : /*                             Identify()                               */
      33             : /************************************************************************/
      34             : 
      35       40150 : static int OGRAVCE00DriverIdentify(GDALOpenInfo *poOpenInfo)
      36             : {
      37       40150 :     if (!EQUAL(CPLGetExtension(poOpenInfo->pszFilename), "E00"))
      38       40142 :         return FALSE;
      39             : 
      40           8 :     if (poOpenInfo->nHeaderBytes == 0)
      41           0 :         return FALSE;
      42             : 
      43           8 :     if (!(STARTS_WITH_CI((const char *)poOpenInfo->pabyHeader, "EXP  0") ||
      44           2 :           STARTS_WITH_CI((const char *)poOpenInfo->pabyHeader, "EXP  1")))
      45           0 :         return FALSE;
      46             : 
      47           8 :     if (strstr((const char *)poOpenInfo->pabyHeader, "GRD  2") != nullptr ||
      48           8 :         strstr((const char *)poOpenInfo->pabyHeader, "GRD  3") != nullptr)
      49           0 :         return FALSE;
      50             : 
      51           8 :     return TRUE;
      52             : }
      53             : 
      54             : /************************************************************************/
      55             : /*                                Open()                                */
      56             : /************************************************************************/
      57             : 
      58           4 : static GDALDataset *OGRAVCE00DriverOpen(GDALOpenInfo *poOpenInfo)
      59             : 
      60             : {
      61           4 :     if (!OGRAVCE00DriverIdentify(poOpenInfo))
      62           0 :         return nullptr;
      63           4 :     if (poOpenInfo->eAccess == GA_Update)
      64           0 :         return nullptr;
      65             : 
      66           4 :     OGRAVCE00DataSource *poDSE00 = new OGRAVCE00DataSource();
      67             : 
      68           7 :     if (poDSE00->Open(poOpenInfo->pszFilename, TRUE) &&
      69           3 :         poDSE00->GetLayerCount() > 0)
      70             :     {
      71           3 :         return poDSE00;
      72             :     }
      73           1 :     delete poDSE00;
      74             : 
      75           1 :     return nullptr;
      76             : }
      77             : 
      78             : /************************************************************************/
      79             : /*                           RegisterOGRAVC()                           */
      80             : /************************************************************************/
      81             : 
      82        1520 : void RegisterOGRAVCE00()
      83             : 
      84             : {
      85        1520 :     if (GDALGetDriverByName("AVCE00") != nullptr)
      86         301 :         return;
      87             : 
      88        1219 :     GDALDriver *poDriver = new GDALDriver();
      89             : 
      90        1219 :     poDriver->SetDescription("AVCE00");
      91        1219 :     poDriver->SetMetadataItem(GDAL_DCAP_VECTOR, "YES");
      92        1219 :     poDriver->SetMetadataItem(GDAL_DMD_LONGNAME,
      93        1219 :                               "Arc/Info E00 (ASCII) Coverage");
      94        1219 :     poDriver->SetMetadataItem(GDAL_DMD_EXTENSION, "e00");
      95        1219 :     poDriver->SetMetadataItem(GDAL_DMD_HELPTOPIC, "drivers/vector/avce00.html");
      96        1219 :     poDriver->SetMetadataItem(GDAL_DCAP_VIRTUALIO, "YES");
      97        1219 :     poDriver->SetMetadataItem(GDAL_DMD_SUPPORTED_SQL_DIALECTS, "OGRSQL SQLITE");
      98             : 
      99        1219 :     poDriver->pfnIdentify = OGRAVCE00DriverIdentify;
     100        1219 :     poDriver->pfnOpen = OGRAVCE00DriverOpen;
     101             : 
     102        1219 :     GetGDALDriverManager()->RegisterDriver(poDriver);
     103             : }