LWGEOM_from_text()

Datum LWGEOM_from_text

(

PG_FUNCTION_ARGS

)

Definition at line 748 of file lwgeom_ogc.c.

{
        text *wkttext = PG_GETARG_TEXT_P(0);
        char *wkt = text_to_cstring(wkttext);
        LWGEOM_PARSER_RESULT lwg_parser_result;
        GSERIALIZED *geom_result = NULL;
        LWGEOM *lwgeom;
 
        POSTGIS_DEBUG(2, "LWGEOM_from_text");
        POSTGIS_DEBUGF(3, "wkt: [%s]", wkt);
 
        if (lwgeom_parse_wkt(&lwg_parser_result, wkt, LW_PARSER_CHECK_ALL) == LW_FAILURE )
                PG_PARSER_ERROR(lwg_parser_result);
 
        lwgeom = lwg_parser_result.geom;
 
        if ( lwgeom->srid != SRID_UNKNOWN )
        {
                elog(WARNING, "OGC WKT expected, EWKT provided - use GeomFromEWKT() for this");
        }
 
        /* read user-requested SRID if any */
        if ( PG_NARGS() > 1 )
                lwgeom_set_srid(lwgeom, PG_GETARG_INT32(1));
 
        geom_result = geometry_serialize(lwgeom);
        lwgeom_parser_result_free(&lwg_parser_result);
 
        PG_RETURN_POINTER(geom_result);
}

References struct_lwgeom_parser_result::geom, LW_FAILURE, LW_PARSER_CHECK_ALL, lwgeom_parse_wkt(), lwgeom_parser_result_free(), lwgeom_set_srid(), LWGEOM::srid, and SRID_UNKNOWN.

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