[Gdal-dev] Library function for listing formats

[Frank Warmerdam]

Matt Hanson wrote:
> It seems that there should be a function for listing all the suported 
> formats GDAL was compiled with.  I can't find one, does such a think exist?
> 
> I have an exe file that uses GDAL.  When the user calls my exe with 
> --help I want to be able to print a list of supported formats.

Matt,

This is the implementation of the --formats help option for most
GDAL programs:

         else if( EQUAL(papszArgv[iArg], "--formats") )
         {
             int iDr;

             printf( "Supported Formats:\n" );
             for( iDr = 0; iDr < GDALGetDriverCount(); iDr++ )
             {
                 GDALDriverH hDriver = GDALGetDriver(iDr);
                 const char *pszRWFlag;

                 if( GDALGetMetadataItem( hDriver, GDAL_DCAP_CREATE, NULL ) )
                     pszRWFlag = "rw+";
                 else if( GDALGetMetadataItem( hDriver, GDAL_DCAP_CREATECOPY,
                                               NULL ) )
                     pszRWFlag = "rw";
                 else
                     pszRWFlag = "ro";

                 printf( "  %s (%s): %s\n",
                         GDALGetDriverShortName( hDriver ),
                         pszRWFlag,
                         GDALGetDriverLongName( hDriver ) );
             }

             CSLDestroy( papszReturn );
             return 0;
         }

Best regards,
-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
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