geography_from_text()

Datum geography_from_text

(

PG_FUNCTION_ARGS

)

Definition at line 553 of file geography_inout.c.

References geography_from_binary(), struct_lwgeom_parser_result::geom, gserialized_geography_from_lwgeom(), LW_FAILURE, LW_PARSER_CHECK_ALL, lwgeom_free(), lwgeom_parse_wkt(), PG_FUNCTION_INFO_V1(), LWGEOM::srid, and text_to_cstring().

Referenced by geography_as_geojson().

{
        LWGEOM_PARSER_RESULT lwg_parser_result;
        GSERIALIZED *g_ser = NULL;
        text *wkt_text = PG_GETARG_TEXT_P(0);

        /* Extract the cstring from the varlena */
        char *wkt = text_to_cstring(wkt_text);

        /* Pass the cstring to the input parser, and magic occurs! */
        if ( lwgeom_parse_wkt(&lwg_parser_result, wkt, LW_PARSER_CHECK_ALL) == LW_FAILURE )
                PG_PARSER_ERROR(lwg_parser_result);

        /* Error on any SRID != default */
        srid_is_latlong(fcinfo, lwg_parser_result.geom->srid);

        /* Clean up string */
        pfree(wkt);
        g_ser = gserialized_geography_from_lwgeom(lwg_parser_result.geom, -1);

        /* Clean up temporary object */
        lwgeom_free(lwg_parser_result.geom);

        PG_RETURN_POINTER(g_ser);
}

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