LWGEOM_summary()

Datum LWGEOM_summary

(

PG_FUNCTION_ARGS

)

Definition at line 144 of file lwgeom_functions_basic.c.

{
        text *summary;
        GSERIALIZED *g = PG_GETARG_GSERIALIZED_P(0);
        LWGEOM *lwg = lwgeom_from_gserialized(g);
        char *lwresult = lwgeom_summary(lwg, 0);
        uint32_t gver = gserialized_get_version(g);
        size_t result_sz = strlen(lwresult) + 8;
        char *result;
        if (gver == 0)
        {
                result = lwalloc(result_sz + 2);
                snprintf(result, result_sz, "0:%s", lwresult);
        }
        else
        {
                result = lwalloc(result_sz);
                snprintf(result, result_sz, "%s", lwresult);
        }
        lwgeom_free(lwg);
        lwfree(lwresult);
 
        /* create a text obj to return */
        summary = cstring_to_text(result);
        lwfree(result);
 
        PG_FREE_IF_COPY(g, 0);
        PG_RETURN_TEXT_P(summary);
}

References gserialized_get_version(), lwalloc(), lwfree(), lwgeom_free(), lwgeom_from_gserialized(), lwgeom_summary(), and result.

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