C++ OGRSFDriver::TestCapability方法代码示例

//---------------------------------------------------------
CSG_String COGR_Driver::Get_Description(int iDriver)
{
	OGRSFDriver	*pDriver	= m_pManager->GetDriver(iDriver);
	CSG_String	s;

	s	+= pDriver->TestCapability(ODrCCreateDataSource)	? SG_T("\n[x] ") : SG_T("\n[ ] ");
	s	+= _TL("create data source");

	s	+= pDriver->TestCapability(ODrCDeleteDataSource)	? SG_T("\n[x] ") : SG_T("\n[ ] ");
	s	+= _TL("delete data source");

/*	s	+= pDriver->TestCapability(ODsCCreateLayer)			? SG_T("\n[x]") : SG_T("\n[ ]");
	s	+= _TL("create layer");

	s	+= pDriver->TestCapability(ODsCDeleteLayer)			? SG_T("\n[x]") : SG_T("\n[ ]");
	s	+= _TL("delete layer");

	s	+= pDriver->TestCapability(OLCDeleteFeature)		? SG_T("\n[x]") : SG_T("\n[ ]");
	s	+= _TL("delete feature");

	s	+= pDriver->TestCapability(OLCRandomRead)			? SG_T("\n[x]") : SG_T("\n[ ]");
	s	+= _TL("random read");

	s	+= pDriver->TestCapability(OLCRandomWrite)			? SG_T("\n[x]") : SG_T("\n[ ]");
	s	+= _TL("random write");

	s	+= pDriver->TestCapability(OLCSequentialWrite)		? SG_T("\n[x]") : SG_T("\n[ ]");
	s	+= _TL("sequential write");
/**/

	return( SG_STR_MBTOSG(s) );
}

void Usage()
{
	OGRSFDriverRegistrar * poR = OGRSFDriverRegistrar::GetRegistrar();
	printf(
	    "Usage: txt2shp -i <input directory>\n"
	    "               -o <output directory>\n"
	    "              [-f <output file format_name>]\n\n"

	    "Note :\n"
	    " You can not put any file except you data files in the input directory."
	    " And the output directory must be empty directory.\n\n"
	);

	printf("Advanced options :\n");
	printf(" -f format_name: output file format name, possible values are:\n");

	for (int iDriver = 0; iDriver < poR->GetDriverCount(); iDriver++)
	{
		OGRSFDriver * poDriver = poR->GetDriver(iDriver);

		if (poDriver->TestCapability(ODrCCreateDataSource))
			printf("     -f \"%s\"\n", poDriver->GetName());
	}

	printf(
	    "\nExample :\n"
	    " txt2shp -i you_dir -o you_dir -f \"ESRI Shapefile\"\n\n"
	);
	exit(1);
}

JNIEXPORT jint JNICALL Java_es_gva_cit_jogr_OGRSFDriver_testCapabilityNat
  (JNIEnv *env, jobject obj, jlong cPtr, jstring cap){
  	
  	OGRSFDriver 			*drv = (OGRSFDriver *) 0 ;
  	drv = *(OGRSFDriver **)&cPtr;
  	int res=-1;
  	
  	const char *testcap = env->GetStringUTFChars( cap, 0);
  	res = drv->TestCapability(testcap);
  	env->ReleaseStringUTFChars( cap, testcap);
  	return res;
  	
  }

//.........这里部分代码省略.........
    poDstDS = OGRSFDriverRegistrar::Open( pszOutputName, TRUE );

/* -------------------------------------------------------------------- */
/*      If that failed, find the driver so we can create the tile index.*/
/* -------------------------------------------------------------------- */
    if( poDstDS == NULL )
    {
        OGRSFDriverRegistrar     *poR = OGRSFDriverRegistrar::GetRegistrar();
        OGRSFDriver              *poDriver = NULL;
        int                      iDriver;

        for( iDriver = 0;
             iDriver < poR->GetDriverCount() && poDriver == NULL;
             iDriver++ )
        {
            if( EQUAL(poR->GetDriver(iDriver)->GetName(),pszFormat) )
            {
                poDriver = poR->GetDriver(iDriver);
            }
        }

        if( poDriver == NULL )
        {
            fprintf( stderr, "Unable to find driver `%s'.\n", pszFormat );
            fprintf( stderr, "The following drivers are available:\n" );
        
            for( iDriver = 0; iDriver < poR->GetDriverCount(); iDriver++ )
            {
                fprintf( stderr, "  -> `%s'\n", poR->GetDriver(iDriver)->GetName() );
            }
            exit( 1 );
        }

        if( !poDriver->TestCapability( ODrCCreateDataSource ) )
        {
            fprintf( stderr, "%s driver does not support data source creation.\n",
                    pszFormat );
            exit( 1 );
        }

/* -------------------------------------------------------------------- */
/*      Now create it.                                                  */
/* -------------------------------------------------------------------- */
        
        poDstDS = poDriver->CreateDataSource( pszOutputName, NULL );
        if( poDstDS == NULL )
        {
            fprintf( stderr, "%s driver failed to create %s\n", 
                    pszFormat, pszOutputName );
            exit( 1 );
        }

        if( poDstDS->GetLayerCount() == 0 )
        {
            OGRFieldDefn oLocation( pszTileIndexField, OFTString );
            
            oLocation.SetWidth( 200 );
            
            if( nFirstSourceDataset < nArgc && papszArgv[nFirstSourceDataset][0] == '-' )
            {
                nFirstSourceDataset++;
            }
            
            OGRSpatialReference* poSrcSpatialRef = NULL;
            
            /* Fetches the SRS of the first layer and use it when creating the tileindex layer */

//.........这里部分代码省略.........
            
            while( (pszLine = CPLReadLine( fpOptFile )) != NULL )
            {
                char **papszTokens;
                int i;

                if( pszLine[0] == '#' || strlen(pszLine) == 0 )
                    continue;

                papszTokens = CSLTokenizeString( pszLine );
                for( i = 0; papszTokens != NULL && papszTokens[i] != NULL; i++)
                    papszReturn = CSLAddString( papszReturn, papszTokens[i] );
                CSLDestroy( papszTokens );
            }

            VSIFClose( fpOptFile );
                
            iArg += 1;
        }

/* -------------------------------------------------------------------- */
/*      --formats                                                       */
/* -------------------------------------------------------------------- */
#ifdef OGR_ENABLED
        else if( EQUAL(papszArgv[iArg], "--formats") )
        {
            int iDr;

            printf( "Supported Formats:\n" );

            OGRSFDriverRegistrar *poR = OGRSFDriverRegistrar::GetRegistrar();
        
            for( iDr = 0; iDr < poR->GetDriverCount(); iDr++ )
            {
                OGRSFDriver *poDriver = poR->GetDriver(iDr);

                if( poDriver->TestCapability( ODrCCreateDataSource ) )
                    printf( "  -> \"%s\" (read/write)\n", 
                            poDriver->GetName() );
                else
                    printf( "  -> \"%s\" (readonly)\n", 
                            poDriver->GetName() );
            }

            CSLDestroy( papszReturn );
            return 0;
        }
#endif /* OGR_ENABLED */

/* -------------------------------------------------------------------- */
/*      --locale                                                        */
/* -------------------------------------------------------------------- */
        else if( EQUAL(papszArgv[iArg],"--locale") && iArg < nArgc-1 )
        {
            setlocale( LC_ALL, papszArgv[++iArg] );
        }

/* -------------------------------------------------------------------- */
/*      --pause - "hit enter" pause useful to connect a debugger.       */
/* -------------------------------------------------------------------- */
        else if( EQUAL(papszArgv[iArg],"--pause") )
        {
            char szLine[81];

            printf( "Hit <ENTER> to continue.\n" );
            fgets( szLine, sizeof(szLine), stdin );
        }

/* -------------------------------------------------------------------- */
/*      --help-general                                                  */
/* -------------------------------------------------------------------- */
        else if( EQUAL(papszArgv[iArg],"--help-general") )
        {
            printf( "Generic GDAL/OGR utility command options:\n" );
            printf( "  --version: report version of GDAL/OGR in use.\n" );
            printf( "  --license: report GDAL/OGR license info.\n" );
#ifdef OGR_ENABLED
            printf( "  --formats: report all configured format drivers.\n" );
#endif /* OGR_ENABLED */
            printf( "  --optfile filename: expand an option file into the argument list.\n" );
            printf( "  --config key value: set system configuration option.\n" );
            printf( "  --debug [on/off/value]: set debug level.\n" );
            printf( "  --help-general: report detailed help on general options.\n" );
            CSLDestroy( papszReturn );
            return 0;
        }

/* -------------------------------------------------------------------- */
/*      carry through unrecognised options.                             */
/* -------------------------------------------------------------------- */
        else
        {
            papszReturn = CSLAddString( papszReturn, papszArgv[iArg] );
        }
    }

    *ppapszArgv = papszReturn;

    return CSLCount( *ppapszArgv );
}

int main( int argc, char ** argv ) 

{
    int            i;
    int            bGotSRS = FALSE;
    int            bPretty = FALSE;
    int            bValidate = FALSE;
    int            bDebug = FALSE;
    int            bFindEPSG = FALSE;
    int            nEPSGCode = -1;
    const char     *pszInput = NULL;
    const char     *pszOutputType = "default";
    OGRSpatialReference  oSRS;

    /* Check strict compilation and runtime library version as we use C++ API */
    if (! GDAL_CHECK_VERSION(argv[0]))
        exit(1);

    /* Must process GDAL_SKIP before GDALAllRegister(), but we can't call */
    /* GDALGeneralCmdLineProcessor before it needs the drivers to be registered */
    /* for the --format or --formats options */
    for( i = 1; i < argc; i++ )
    {
        if( EQUAL(argv[i],"--config") && i + 2 < argc && EQUAL(argv[i + 1], "GDAL_SKIP") )
        {
            CPLSetConfigOption( argv[i+1], argv[i+2] );

            i += 2;
        }
    }

/* -------------------------------------------------------------------- */
/*      Register standard GDAL and OGR drivers.                         */
/* -------------------------------------------------------------------- */
    GDALAllRegister();
#ifdef OGR_ENABLED
    OGRRegisterAll();
#endif

/* -------------------------------------------------------------------- */
/*      Process --formats option.                                       */
/*      Code copied from gcore/gdal_misc.cpp and ogr/ogrutils.cpp.      */
/*      This is not ideal, but is best for more descriptive output and  */
/*      we don't want to call OGRGeneralCmdLineProcessor().             */
/* -------------------------------------------------------------------- */ 
   for( i = 1; i < argc; i++ )
    {        
        if( EQUAL(argv[i], "--formats") )
        {
            int iDr;
            
            /* GDAL formats */
            printf( "Supported Raster Formats:\n" );
            for( iDr = 0; iDr < GDALGetDriverCount(); iDr++ )
            {
                GDALDriverH hDriver = GDALGetDriver(iDr);
                const char *pszRWFlag, *pszVirtualIO;
                
                if( GDALGetMetadataItem( hDriver, GDAL_DCAP_CREATE, NULL ) )
                    pszRWFlag = "rw+";
                else if( GDALGetMetadataItem( hDriver, GDAL_DCAP_CREATECOPY, 
                                              NULL ) )
                    pszRWFlag = "rw";
                else
                    pszRWFlag = "ro";
                
                if( GDALGetMetadataItem( hDriver, GDAL_DCAP_VIRTUALIO, NULL) )
                    pszVirtualIO = "v";
                else
                    pszVirtualIO = "";
                
                printf( "  %s (%s%s): %s\n",
                        GDALGetDriverShortName( hDriver ),
                        pszRWFlag, pszVirtualIO,
                        GDALGetDriverLongName( hDriver ) );
            }

            /* OGR formats */
#ifdef OGR_ENABLED
            printf( "\nSupported Vector Formats:\n" );
            
            OGRSFDriverRegistrar *poR = OGRSFDriverRegistrar::GetRegistrar();
            
            for( iDr = 0; iDr < poR->GetDriverCount(); iDr++ )
            {
                OGRSFDriver *poDriver = poR->GetDriver(iDr);
                
                if( poDriver->TestCapability( ODrCCreateDataSource ) )
                    printf( "  -> \"%s\" (read/write)\n", 
                            poDriver->GetName() );
                else
                    printf( "  -> \"%s\" (readonly)\n", 
                            poDriver->GetName() );
            }
            
#endif
            exit(1);
            
        }
    }
//.........这里部分代码省略.........