text: /******************************************************************************
   * $Id$
   *
   * Project:  OpenGIS Simple Features Reference Implementation
   * Purpose:  Implements OGRDGNDriver class.
   * Author:   Frank Warmerdam, warmerdam@pobox.com
   *
   ******************************************************************************
   * Copyright (c) 2000, Frank Warmerdam (warmerdam@pobox.com)
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included
   * in all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
   * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
   * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
   * DEALINGS IN THE SOFTWARE.
   ****************************************************************************/
  
  #include "ogr_dgn.h"
  #include "cpl_conv.h"
  
  CPL_CVSID("$Id$");
  
  /************************************************************************/
  /*                          ~OGRDGNDriver()                             */
  /************************************************************************/
  
  OGRDGNDriver::~OGRDGNDriver()
  
  {
  }
  
  /************************************************************************/
  /*                              GetName()                               */
  /************************************************************************/
  
  const char *OGRDGNDriver::GetName()
  
  {
      return "DGN";
  }
  
  /************************************************************************/
  /*                                Open()                                */
  /************************************************************************/
  
  OGRDataSource *OGRDGNDriver::Open( const char * pszFilename, int bUpdate )
  
  {
      OGRDGNDataSource    *poDS;
  
      poDS = new OGRDGNDataSource();
  
      if( !poDS->Open( pszFilename, TRUE, bUpdate )
          || poDS->GetLayerCount() == 0 )
      {
          delete poDS;
          return NULL;
      }
      else
          return poDS;
  }
  
  /************************************************************************/
  /*                          CreateDataSource()                          */
  /************************************************************************/
  
  OGRDataSource *OGRDGNDriver::CreateDataSource( const char * pszName,
                                                 char **papszOptions )
  
  {
  /* -------------------------------------------------------------------- */
  /*      Return a new OGRDataSource()                                    */
  /* -------------------------------------------------------------------- */
      OGRDGNDataSource    *poDS = NULL;
  
      poDS = new OGRDGNDataSource();
      
      if( !poDS->PreCreate( pszName, papszOptions ) )
      {
          delete poDS;
          return NULL;
      }
      else
          return poDS;
  }
  
  /************************************************************************/
  /*                           TestCapability()                           */
  /************************************************************************/
  
  int OGRDGNDriver::TestCapability( const char * pszCap )
  
  {
      if( EQUAL(pszCap,ODrCCreateDataSource) )
          return TRUE;
      else
          return FALSE;
  }
  
  /************************************************************************/
  /*                          RegisterOGRDGN()                            */
  /************************************************************************/
  
  void RegisterOGRDGN()
  
  {
      OGRSFDriverRegistrar::GetRegistrar()->RegisterDriver( new OGRDGNDriver );
  }
  
  