BOX3D_in()

Datum BOX3D_in

(

PG_FUNCTION_ARGS

)

Definition at line 56 of file lwgeom_box3d.c.

{
        char *str = PG_GETARG_CSTRING(0);
        int nitems;
        BOX3D *box = (BOX3D *)palloc(sizeof(BOX3D));
        box->zmin = 0;
        box->zmax = 0;
 
        if (strstr(str, "BOX3D(") != str)
        {
                pfree(box);
                elog(ERROR, "BOX3D parser - doesn't start with BOX3D(");
                PG_RETURN_NULL();
        }
 
        nitems = sscanf(str,
                        "BOX3D(%le %le %le ,%le %le %le)",
                        &box->xmin,
                        &box->ymin,
                        &box->zmin,
                        &box->xmax,
                        &box->ymax,
                        &box->zmax);
        if (nitems != 6)
        {
                nitems = sscanf(str, "BOX3D(%le %le ,%le %le)", &box->xmin, &box->ymin, &box->xmax, &box->ymax);
                if (nitems != 4)
                {
                        pfree(box);
                        elog(
                            ERROR,
                            "BOX3D parser - couldn't parse.  It should look like: BOX3D(xmin ymin zmin,xmax ymax zmax) or BOX3D(xmin ymin,xmax ymax)");
                        PG_RETURN_NULL();
                }
        }
 
        if (box->xmin > box->xmax)
        {
                float tmp = box->xmin;
                box->xmin = box->xmax;
                box->xmax = tmp;
        }
        if (box->ymin > box->ymax)
        {
                float tmp = box->ymin;
                box->ymin = box->ymax;
                box->ymax = tmp;
        }
        if (box->zmin > box->zmax)
        {
                float tmp = box->zmin;
                box->zmin = box->zmax;
                box->zmax = tmp;
        }
        box->srid = SRID_UNKNOWN;
        PG_RETURN_POINTER(box);
}

References BOX3D::srid, SRID_UNKNOWN, str, BOX3D::xmax, BOX3D::xmin, BOX3D::ymax, BOX3D::ymin, BOX3D::zmax, and BOX3D::zmin.