geom_from_geojson()

Datum geom_from_geojson

(

PG_FUNCTION_ARGS

)

Definition at line 63 of file lwgeom_in_geojson.c.

References geometry_serialize(), getSRIDbySRS(), lwfree(), lwgeom_free(), lwgeom_from_geojson(), lwgeom_set_srid(), and text2cstring().

Referenced by postgis_libjson_version().

{
#ifndef HAVE_LIBJSON
        elog(ERROR, "You need JSON-C for ST_GeomFromGeoJSON");
        PG_RETURN_NULL();
#else /* HAVE_LIBJSON  */

        GSERIALIZED *geom;
        LWGEOM *lwgeom;
        text *geojson_input;
        char *geojson;
        char *srs = NULL;

        /* Get the geojson stream */
        if (PG_ARGISNULL(0))
                PG_RETURN_NULL();

        geojson_input = PG_GETARG_TEXT_P(0);
        geojson = text2cstring(geojson_input);

        lwgeom = lwgeom_from_geojson(geojson, &srs);
        if ( ! lwgeom )
        {
                /* Shouldn't get here */
                elog(ERROR, "lwgeom_from_geojson returned NULL");
                PG_RETURN_NULL();
        }

        if ( srs )
        {
                lwgeom_set_srid(lwgeom, getSRIDbySRS(srs));
                lwfree(srs);
        }

        geom = geometry_serialize(lwgeom);
        lwgeom_free(lwgeom);

        PG_RETURN_POINTER(geom);
#endif
}

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