LWGEOM_asHEXEWKB()

Datum LWGEOM_asHEXEWKB

(

PG_FUNCTION_ARGS

)

Definition at line 300 of file lwgeom_inout.c.

{
        GSERIALIZED *geom = PG_GETARG_GSERIALIZED_P(0);
        LWGEOM *lwgeom;
        uint8_t variant = 0;
 
        /* If user specified endianness, respect it */
        if ( (PG_NARGS()>1) && (!PG_ARGISNULL(1)) )
        {
                text *type = PG_GETARG_TEXT_P(1);
 
                if  ( ! strncmp(VARDATA(type), "xdr", 3) ||
                      ! strncmp(VARDATA(type), "XDR", 3) )
                {
                        variant = variant | WKB_XDR;
                }
                else
                {
                        variant = variant | WKB_NDR;
                }
        }
 
        /* Create WKB hex string */
        lwgeom = lwgeom_from_gserialized(geom);
        PG_RETURN_TEXT_P(lwgeom_to_hexwkb_varlena(lwgeom, variant | WKB_EXTENDED));
}

References lwgeom_from_gserialized(), lwgeom_to_hexwkb_varlena(), variant, WKB_EXTENDED, WKB_NDR, and WKB_XDR.

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