LWGEOM_asText()

Datum LWGEOM_asText

(

PG_FUNCTION_ARGS

)

Definition at line 860 of file lwgeom_ogc.c.

{
        GSERIALIZED *geom;
        LWGEOM *lwgeom;
        char *wkt;
        size_t wkt_size;
        text *result;
        int dbl_dig_for_wkt = DBL_DIG;
 
        POSTGIS_DEBUG(2, "Called.");
 
        geom = PG_GETARG_GSERIALIZED_P(0);
        lwgeom = lwgeom_from_gserialized(geom);
 
        if (PG_NARGS() > 1) dbl_dig_for_wkt = PG_GETARG_INT32(1);
 
        /* Write to WKT and free the geometry */
        wkt = lwgeom_to_wkt(lwgeom, WKT_ISO, dbl_dig_for_wkt, &wkt_size);
        lwgeom_free(lwgeom);
        POSTGIS_DEBUGF(3, "WKT size = %u, WKT length = %u", (unsigned int)wkt_size, (unsigned int)strlen(wkt));
 
        /* Write to text and free the WKT */
        result = cstring_to_text(wkt);
        pfree(wkt);
 
        /* Return the text */
        PG_FREE_IF_COPY(geom, 0);
        PG_RETURN_TEXT_P(result);
}

References lwgeom_free(), lwgeom_from_gserialized(), lwgeom_to_wkt(), and WKT_ISO.

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