PostGIS  2.5.7dev-r@@SVN_REVISION@@

◆ parse_gml_surface()

static LWGEOM* parse_gml_surface ( xmlNodePtr  xnode,
bool *  hasz,
int *  root_srid 
)
static

Parse GML Surface (3.1.1)

Definition at line 1404 of file lwgeom_in_gml.c.

1405 {
1406  xmlNodePtr xa;
1407  int patch;
1408  LWGEOM *geom=NULL;
1409  bool found=false;
1410 
1411  if (is_xlink(xnode)) xnode = get_xlink_node(xnode);
1412 
1413  /* Looking for gml:patches */
1414  for (xa = xnode->children ; xa != NULL ; xa = xa->next)
1415  {
1416  if (xa->type != XML_ELEMENT_NODE) continue;
1417  if (!is_gml_namespace(xa, false)) continue;
1418  if (!strcmp((char *) xa->name, "patches"))
1419  {
1420  found = true;
1421  break;
1422  }
1423  }
1424  if (!found) gml_lwpgerror("invalid GML representation", 51);
1425 
1426  /* Processing gml:PolygonPatch */
1427  for (patch=0, xa = xa->children ; xa != NULL ; xa = xa->next)
1428  {
1429  if (xa->type != XML_ELEMENT_NODE) continue;
1430  if (!is_gml_namespace(xa, false)) continue;
1431  if (strcmp((char *) xa->name, "PolygonPatch")) continue;
1432  patch++;
1433 
1434  /* SQL/MM define ST_CurvePolygon as a single patch only,
1435  cf ISO 13249-3:2009 -> 4.2.9 (p27) */
1436  if (patch > 1) gml_lwpgerror("invalid GML representation", 52);
1437 
1438  geom = parse_gml_patch(xa, hasz, root_srid);
1439  }
1440 
1441  if (!patch) gml_lwpgerror("invalid GML representation", 53);
1442 
1443  return geom;
1444 }
static xmlNodePtr get_xlink_node(xmlNodePtr xnode)
Return a xmlNodePtr on a node referenced by a XLink or NULL otherwise.
static bool is_xlink(xmlNodePtr node)
Return true if current node contains a simple XLink Return false otherwise.
static LWGEOM * parse_gml_patch(xmlNodePtr xnode, bool *hasz, int *root_srid)
Parse GML PolygonPatch (3.1.1)
static bool is_gml_namespace(xmlNodePtr xnode, bool is_strict)
Return false if current element namespace is not a GML one Return true otherwise.
static void gml_lwpgerror(char *msg, __attribute__((__unused__)) int error_code)
Definition: lwgeom_in_gml.c:82

References get_xlink_node(), gml_lwpgerror(), is_gml_namespace(), is_xlink(), and parse_gml_patch().

Referenced by parse_gml().

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