geography_as_kml()

Datum geography_as_kml

(

PG_FUNCTION_ARGS

)

Definition at line 326 of file geography_inout.c.

{
 
        lwvarlena_t *kml;
        static const char *default_prefix = "";
        char *prefixbuf;
        const char *prefix = default_prefix;
        GSERIALIZED *g = PG_GETARG_GSERIALIZED_P(0);
        int precision = PG_GETARG_INT32(1);
        text *prefix_text = PG_GETARG_TEXT_P(2);
        LWGEOM *lwgeom = lwgeom_from_gserialized(g);
 
        /* Condition the precision */
        if (precision < 0)
                precision = 0;
 
        if (VARSIZE_ANY_EXHDR(prefix_text) > 0)
        {
                /* +2 is one for the ':' and one for term null */
                prefixbuf = palloc(VARSIZE_ANY_EXHDR(prefix_text)+2);
                memcpy(prefixbuf, VARDATA(prefix_text),
                       VARSIZE_ANY_EXHDR(prefix_text));
                /* add colon and null terminate */
                prefixbuf[VARSIZE_ANY_EXHDR(prefix_text)] = ':';
                prefixbuf[VARSIZE_ANY_EXHDR(prefix_text)+1] = '\0';
                prefix = prefixbuf;
        }
        else
        {
                prefix = "";
        }
 
        kml = lwgeom_to_kml2(lwgeom, precision, prefix);
        if (kml)
                PG_RETURN_TEXT_P(kml);
        PG_RETURN_NULL();
}

References lwgeom_from_gserialized(), lwgeom_to_kml2(), and precision.

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