ST_GeoHash()

Datum ST_GeoHash

(

PG_FUNCTION_ARGS

)

Definition at line 2522 of file lwgeom_functions_basic.c.

References dumpnode::geom, lwgeom_from_gserialized(), lwgeom_geohash(), PG_FUNCTION_INFO_V1(), precision, and ST_CollectionExtract().

Referenced by LWGEOM_affine().

{

        GSERIALIZED *geom = NULL;
        int precision = 0;
        char *geohash = NULL;
        text *result = NULL;

        if ( PG_ARGISNULL(0) )
        {
                PG_RETURN_NULL();
        }

        geom = PG_GETARG_GSERIALIZED_P(0);

        if ( ! PG_ARGISNULL(1) )
        {
                precision = PG_GETARG_INT32(1);
        }

        geohash = lwgeom_geohash((LWGEOM*)(lwgeom_from_gserialized(geom)), precision);

        if ( ! geohash )
                PG_RETURN_NULL();

        result = cstring2text(geohash);
        pfree(geohash);

        PG_RETURN_TEXT_P(result);
}

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