NasalCanvas: Clean up and expose Element node ghost

[flightgear.git] / src / Airports / xmlloader.cxx

diff --git a/src/Airports/xmlloader.cxx b/src/Airports/xmlloader.cxx
index 1448c84f9e6fc473e3a2323b4c2ed0cd7aafc747..901d1235f19d34fe566946c6c55862be94b574dc 100644 (file)
--- a/src/Airports/xmlloader.cxx
+++ b/src/Airports/xmlloader.cxx
@@ -1,50 +1,120 @@
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+//
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
 #include <simgear/misc/sg_path.hxx>
+#include <simgear/xml/easyxml.hxx>
+#include <simgear/misc/strutils.hxx>
+#include <simgear/timing/timestamp.hxx>
+
 #include <Main/globals.hxx>
+#include <Main/fg_props.hxx>
 
 #include "xmlloader.hxx"
 #include "dynamicloader.hxx"
 #include "runwayprefloader.hxx"
 
 #include "dynamics.hxx"
+#include "simple.hxx"
 #include "runwayprefs.hxx"
 
+#include <Navaids/NavDataCache.hxx>
+
+using std::string;
+
 XMLLoader::XMLLoader() {}
 XMLLoader::~XMLLoader() {}
 
-void XMLLoader::load(FGAirportDynamics* d) {
-  FGAirportDynamicsXMLLoader visitor(d);
+void XMLLoader::load(FGAirportDynamics* d)
+{
+  SGPath path;
+  if (!findAirportData(d->parent()->ident(), "groundnet", path)) {
+    return;
+  }
 
-  SGPath parkpath( globals->get_fg_root() );
-  parkpath.append( "/AI/Airports/" );
-  parkpath.append( d->getId() );
-  parkpath.append( "parking.xml" );
+  flightgear::NavDataCache* cache = flightgear::NavDataCache::instance();
+  if (!cache->isCachedFileModified(path)) {
+    return;
+  }
   
-  if (parkpath.exists()) {
-    try {
-      readXML(parkpath.str(), visitor);
-      d->init();
-    } catch (const sg_exception &e) {
-      //cerr << "unable to read " << parkpath.str() << endl;
-    }
+  SG_LOG(SG_GENERAL, SG_INFO, "reading groundnet data from " << path);
+  SGTimeStamp t;
+  try {
+    cache->beginTransaction();
+    t.stamp();
+    {
+      FGAirportDynamicsXMLLoader visitor(d);
+      readXML(path.str(), visitor);
+    } // ensure visitor is destroyed so its destructor runs
+    cache->stampCacheFile(path);
+    cache->commitTransaction();
+  } catch (sg_exception& e) {
+    cache->abortTransaction();
   }
 
+  SG_LOG(SG_GENERAL, SG_INFO, "parsing XML took " << t.elapsedMSec());
 }
 
 void XMLLoader::load(FGRunwayPreference* p) {
   FGRunwayPreferenceXMLLoader visitor(p);
+  loadAirportXMLDataIntoVisitor(p->getId(), "rwyuse", visitor);
+}
+
+bool XMLLoader::findAirportData(const std::string& aICAO, 
+    const std::string& aFileName, SGPath& aPath)
+{
+  string fileName(aFileName);
+  if (!simgear::strutils::ends_with(aFileName, ".xml")) {
+    fileName.append(".xml");
+  }
+  
+  string_list sc = globals->get_fg_scenery();
+  char buffer[128];
+  ::snprintf(buffer, 128, "%c/%c/%c/%s.%s", 
+    aICAO[0], aICAO[1], aICAO[2], 
+    aICAO.c_str(), fileName.c_str());
 
-  SGPath rwyPrefPath( globals->get_fg_root() );
-  rwyPrefPath.append( "AI/Airports/" );
-  rwyPrefPath.append( p->getId() );
-  rwyPrefPath.append( "rwyuse.xml" );
-
-  //if (ai_dirs.find(id.c_str()) != ai_dirs.end()
-  //  && rwyPrefPath.exists())
-  if (rwyPrefPath.exists()) {
-    try {
-      readXML(rwyPrefPath.str(), visitor);
-    } catch (const sg_exception &e) {
-      //cerr << "unable to read " << rwyPrefPath.str() << endl;
+  for (string_list_iterator it = sc.begin(); it != sc.end(); ++it) {
+    // fg_senery contains empty strings as "markers" (see FGGlobals::set_fg_scenery)
+    if (!it->empty()) {
+        SGPath path(*it);
+        path.append("Airports");
+        path.append(string(buffer));
+        if (path.exists()) {
+          aPath = path;
+          return true;
+        } // of path exists
     }
+  } // of scenery path iteration
+  return false;
+}
+
+bool XMLLoader::loadAirportXMLDataIntoVisitor(const string& aICAO, 
+    const string& aFileName, XMLVisitor& aVisitor)
+{
+  SGPath path;
+  if (!findAirportData(aICAO, aFileName, path)) {
+    SG_LOG(SG_GENERAL, SG_DEBUG, "loadAirportXMLDataIntoVisitor: failed to find data for " << aICAO << "/" << aFileName);
+    return false;
   }
+
+  SG_LOG(SG_GENERAL, SG_DEBUG, "loadAirportXMLDataIntoVisitor: loading from " << path.str());
+  readXML(path.str(), aVisitor);
+  return true;
 }
+