xmlloader.cxx

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// 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 <cstdio>
#include <utility>
 
#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 "airport.hxx"
#include "runwayprefs.hxx"
 
#include <Navaids/NavDataCache.hxx>
#include <Main/sentryIntegration.hxx>
 
using std::string;
 
XMLLoader::XMLLoader() {}
XMLLoader::~XMLLoader() {}
 
void XMLLoader::load(FGGroundNetwork* net)
{
  SGPath path;
  if (!findAirportData(net->airport()->ident(), "groundnet", path)) {
    return;
  }
 
  SG_LOG(SG_NAVAID, SG_DEBUG, "reading groundnet data from " << path);
  SGTimeStamp t;
  t.stamp();
  try {
      FGGroundNetXMLLoader visitor(net);
      readXML(path, visitor);
 
      if (visitor.hasErrors() && fgGetBool("/sim/terrasync/enabled")) {
          flightgear::updateSentryTag("ground-net", net->airport()->ident());
          flightgear::sentryReportException("Ground-net load error", path.utf8Str());
      }
  } catch (sg_exception& e) {
    SG_LOG(SG_NAVAID, SG_DEV_WARN, "parsing groundnet XML failed:" << e.getFormattedMessage());
  }
 
  SG_LOG(SG_NAVAID, SG_DEBUG, "parsing groundnet XML took " << t.elapsedMSec());
}
 
void XMLLoader::loadFromStream(FGGroundNetwork* net, std::istream& inData)
{
  try {
      FGGroundNetXMLLoader visitor(net);
      readXML(inData, visitor);
 
      if (visitor.hasErrors()) {
          flightgear::sentryReportException("Ground-net load error", {});
      }
  } catch (sg_exception& e) {
    SG_LOG(SG_NAVAID, SG_DEV_WARN, "parsing groundnet XML failed:" << e.getFormattedMessage());
  }
}
 
void XMLLoader::loadFromPath(FGGroundNetwork* net, const SGPath& path)
{
  try {
      FGGroundNetXMLLoader visitor(net);
      readXML(path, visitor);
 
      if (visitor.hasErrors() && fgGetBool("/sim/terrasync/enabled")) {
          flightgear::updateSentryTag("ground-net", net->airport()->ident());
          flightgear::sentryReportException("Ground-net load error", path.utf8Str());
      }
  } catch (sg_exception& e) {
    SG_LOG(SG_NAVAID, SG_DEV_WARN, "parsing groundnet XML failed:" << e.getFormattedMessage());
  }
}
 
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)
{
  FGAirportRef airport = FGAirport::findByIdent(aICAO);
  if (!airport) {
      return false;
  }
 
  string fileName(aFileName);
  if (!simgear::strutils::ends_with(aFileName, ".xml")) {
    fileName.append(".xml");
  }
 
  const bool performFullTraversal = airport->sceneryPath().isNull() ||
    !fileName.compare("procedures.xml");
 
  PathList 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());
 
    for (PathList::const_iterator it = sc.begin(); it != sc.end(); ++it) {
    // fg_senery contains empty strings as "markers" (see FGGlobals::set_fg_scenery)
    if (!it->isNull()) {
        const SGPath path = *it / "Airports" / buffer;
        if (path.exists()) {
          aPath = std::move(path);
          return true;
        } // of path exists
 
        // Unless we are in “full traversal mode”, don't look in scenery paths
        // that come after the one which contributed the apt.dat file for the
        // airport.
        if (!performFullTraversal && *it == airport->sceneryPath()) {
            return false;
        }
    }
  } // 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_NAVAID, SG_DEBUG, "loadAirportXMLDataIntoVisitor: failed to find data for " << aICAO << "/" << aFileName);
    return false;
  }
 
    bool readXMLOk = true;
    try {
        SG_LOG(SG_NAVAID, SG_DEBUG, "loadAirportXMLDataIntoVisitor: loading from " << path);
        readXML(path, aVisitor);
    } catch (sg_exception& e) {
        readXMLOk = false;
        SG_LOG(SG_NAVAID, SG_WARN, "XML errors trying to read:" << path);
    }
    
    return readXMLOk;
}