C++ ImportParameter类代码示例

  bool OptimizeAreasLowZoomGenerator::Import(const TypeConfigRef& typeConfig,
                                             const ImportParameter& parameter,
                                             Progress& progress)
  {
    FileOffset          indexOffset=0;
    FileWriter          writer;
    Magnification       magnification; // Magnification, we optimize for
    TypeInfoSet         areaTypes;     // Types we optimize
    std::list<TypeData> areaTypesData;

    GetAreaTypesToOptimize(*typeConfig,
                           areaTypes);

    try {
      writer.Open(AppendFileToDir(parameter.GetDestinationDirectory(),
                                  OptimizeAreasLowZoom::FILE_AREASOPT_DAT));

      //
      // Write header
      //

      writer.WriteFileOffset(indexOffset);

      if (!HandleAreas(parameter,
                       progress,
                       *typeConfig,
                       writer,
                       areaTypes,
                       areaTypesData)) {
        progress.Error("Error while optimizing areas");
        return false;
      }

      // Position of the index
      indexOffset=writer.GetPos();

      if (!WriteHeader(writer,
                       areaTypesData,
                       (uint32_t)parameter.GetOptimizationMaxMag())) {
        progress.Error("Cannot write file header");
        return false;
      }

      writer.GotoBegin();
      writer.WriteFileOffset(indexOffset);

      writer.Close();
    }
    catch (IOException& e) {
      progress.Error(e.GetDescription());

      writer.CloseFailsafe();

      return false;
    }

    return true;
  }

  bool Preprocess::Initialize(const ImportParameter& parameter)
  {
    coordPageCount=0;
    currentPageId=std::numeric_limits<PageId>::max();

    nodeCount=0;
    wayCount=0;
    areaCount=0;
    relationCount=0;
    coastlineCount=0;

    lastNodeId=std::numeric_limits<OSMId>::min();
    lastWayId=std::numeric_limits<OSMId>::min();
    lastRelationId=std::numeric_limits<OSMId>::min();

    nodeSortingError=false;
    waySortingError=false;
    relationSortingError=false;

    nodeWriter.Open(AppendFileToDir(parameter.GetDestinationDirectory(),
                                    "rawnodes.dat"));
    nodeWriter.Write(nodeCount);

    wayWriter.Open(AppendFileToDir(parameter.GetDestinationDirectory(),
                                   "rawways.dat"));
    wayWriter.Write(wayCount+areaCount);

    relationWriter.Open(AppendFileToDir(parameter.GetDestinationDirectory(),
                                        "rawrels.dat"));
    relationWriter.Write(relationCount);

    coastlineWriter.Open(AppendFileToDir(parameter.GetDestinationDirectory(),
                                        "rawcoastline.dat"));
    coastlineWriter.Write(coastlineCount);

    coordWriter.Open(AppendFileToDir(parameter.GetDestinationDirectory(),
                                     "coord.dat"));

    FileOffset offset=0;

    coordWriter.Write(coordPageSize);
    coordWriter.Write(offset);
    coordWriter.FlushCurrentBlockWithZeros(coordPageSize*2*sizeof(uint32_t));

    coordPageCount++;

    lats.resize(coordPageSize);
    lons.resize(coordPageSize);
    isSet.resize(coordPageSize);

    return !nodeWriter.HasError() &&
           !wayWriter.HasError() &&
           !relationWriter.HasError() &&
           !coastlineWriter.HasError() &&
           !coordWriter.HasError();
  }

  bool OptimizeAreasLowZoomGenerator::GetAreas(const TypeConfig& typeConfig,
                                               const ImportParameter& parameter,
                                               Progress& progress,
                                               FileScanner& scanner,
                                               const TypeInfoSet& types,
                                               std::vector<std::list<AreaRef> >& areas,
                                               TypeInfoSet& loadedTypes)
  {
    uint32_t    areaCount=0;
    size_t      collectedAreasCount=0;

    loadedTypes=types;

    progress.SetAction("Collecting area data to optimize");

    scanner.GotoBegin();

    scanner.Read(areaCount);

    for (uint32_t a=1; a<=areaCount; a++) {
      AreaRef area=std::make_shared<Area>();

      progress.SetProgress(a,areaCount);

      area->Read(typeConfig,
                 scanner);

      if (loadedTypes.IsSet(area->GetType())) {
        areas[area->GetType()->GetIndex()].push_back(area);

        collectedAreasCount++;

        while (collectedAreasCount>parameter.GetOptimizationMaxWayCount() &&
               loadedTypes.Size()>1) {
          TypeInfoRef victimType;

          for (auto &type : loadedTypes) {
            if (areas[type->GetIndex()].size()>0 &&
                (!victimType ||
                 areas[type->GetIndex()].size()<areas[victimType->GetIndex()].size())) {
              victimType=type;
            }
          }

          assert(victimType);

          collectedAreasCount-=areas[victimType->GetIndex()].size();
          areas[victimType->GetIndex()].clear();
          loadedTypes.Remove(victimType);
        }
      }
    }

    progress.Info("Collected "+NumberToString(collectedAreasCount)+" areas for "+NumberToString(loadedTypes.Size())+" types");

    return !scanner.HasError();
  }

  static bool ExecuteModules(std::list<ImportModule*>& modules,
                            const ImportParameter& parameter,
                            Progress& progress,
                            const TypeConfigRef& typeConfig)
  {
    StopClock overAllTimer;
    size_t    currentStep=1;

    for (const auto& module : modules) {
      if (currentStep>=parameter.GetStartStep() &&
          currentStep<=parameter.GetEndStep()) {
        StopClock timer;
        bool      success;

        progress.SetStep(std::string("Step #")+
                         NumberToString(currentStep)+
                         " - "+
                         module->GetDescription());

        success=module->Import(typeConfig,
                               parameter,
                               progress);

        timer.Stop();

        progress.Info(std::string("=> ")+timer.ResultString()+" second(s)");

        if (!success) {
          progress.Error(std::string("Error while executing step '")+module->GetDescription()+"'!");
          return false;
        }
      }

      currentStep++;
    }

    overAllTimer.Stop();
    progress.Info(std::string("=> ")+overAllTimer.ResultString()+" second(s)");

    return true;
  }

  bool AreaWayIndexGenerator::FitsIndexCriteria(const ImportParameter& parameter,
                                                Progress& progress,
                                                const TypeInfo& typeInfo,
                                                const TypeData& typeData,
                                                const CoordCountMap& cellFillCount)
  {
    if (typeData.indexCells==0) {
      return true;
    }

    size_t entryCount=0;
    size_t max=0;

    for (CoordCountMap::const_iterator cell=cellFillCount.begin();
         cell!=cellFillCount.end();
         ++cell) {
      entryCount+=cell->second;
      max=std::max(max,cell->second);
    }

    // Average number of entries per tile cell
    double average=entryCount*1.0/cellFillCount.size();

    // If the fill rate of the index is too low, we use this index level anyway
    if (typeData.indexCells/(1.0*typeData.cellXCount*typeData.cellYCount)<=
        parameter.GetAreaWayIndexMinFillRate()) {
      progress.Warning(typeInfo.GetName()+" ("+NumberToString(typeInfo.GetId())+") is not well distributed");
      return true;
    }

    // If average fill size and max fill size for tile cells
    // is within limits, store it now.
    if (max<=parameter.GetAreaWayIndexCellSizeMax() &&
        average<=parameter.GetAreaWayIndexCellSizeAverage()) {
      return true;
    }

    return false;
  }

  bool Preprocess::ProcessFiles(const TypeConfigRef& typeConfig,
                                const ImportParameter& parameter,
                                Progress& progress,
                                Callback& callback)
  {
    for (const auto& filename : parameter.GetMapfiles()) {
      if (filename.length()>=4 &&
          filename.substr(filename.length()-4)==".osm")  {

#if defined(HAVE_LIB_XML)
        PreprocessOSM preprocess(callback);

        if (!preprocess.Import(typeConfig,
                               parameter,
                               progress,
                               filename)) {
          return false;
        }
#else
        progress.Error("Support for the OSM file format is not enabled!");
        return false;
#endif
      }
      else if (filename.length()>=4 &&
            filename.substr(filename.length()-4)==".pbf") {

#if defined(HAVE_LIB_PROTOBUF)
        PreprocessPBF preprocess(callback);

        if (!preprocess.Import(typeConfig,
                               parameter,
                               progress,
                               filename)) {
          return false;
        }
#else
        progress.Error("Support for the PBF file format is not enabled!");
        return false;
#endif
      }
      else {
        progress.Error("Sorry, this file type is not yet supported!");
        return false;
      }
    }

    return true;
  }

  bool AreaAreaIndexGenerator::WriteIndexLevel(const ImportParameter& parameter,
                                               FileWriter& writer,
                                               int level,
                                               std::map<Pixel,AreaLeaf>& leafs)
  {
    for (std::map<Pixel,AreaLeaf>::iterator leaf=leafs.begin();
         leaf!=leafs.end();
         ++leaf) {
      writer.GetPos(leaf->second.offset);

      assert(!leaf->second.areas.empty() ||
             leaf->second.children[0]!=0 ||
             leaf->second.children[1]!=0 ||
             leaf->second.children[2]!=0 ||
             leaf->second.children[3]!=0);

      if (level<(int)parameter.GetAreaAreaIndexMaxMag()) {
        for (size_t c=0; c<4; c++) {
          if (leaf->second.children[c]==0) {
            writer.WriteNumber(0);
          }
          else {
            writer.WriteNumber(leaf->second.children[c]);
          }
        }
      }

      FileOffset lastOffset;

      // Areas
      writer.WriteNumber((uint32_t)leaf->second.areas.size());

      lastOffset=0;
      for (std::list<Entry>::const_iterator entry=leaf->second.areas.begin();
           entry!=leaf->second.areas.end();
           entry++) {
        writer.WriteNumber(entry->type);
        // Since objects are inserted in file position order, we do not need
        // to sort objects by file offset at this place
        writer.WriteNumber(entry->offset-lastOffset);

        lastOffset=entry->offset;
      }
    }

    return !writer.HasError();
  }

  bool WayLocationProcessorFilter::BeforeProcessingStart(const ImportParameter& parameter,
                                                         Progress& progress,
                                                         const TypeConfig& typeConfig)
  {
    overallDataCount=0;

    nameReader=new NameFeatureValueReader(typeConfig);
    locationReader=new LocationFeatureValueReader(typeConfig);

    try {
      writer.Open(AppendFileToDir(parameter.GetDestinationDirectory(),
                                  SortWayDataGenerator::WAYADDRESS_DAT));

      writer.Write(overallDataCount);
    }
    catch (IOException& e) {
      progress.Error(e.GetDescription());

      return false;
    }

    return true;
  }

  bool Preprocess::Import(const ImportParameter& parameter,
                          Progress& progress,
                          const TypeConfig& typeConfig)
  {
    if (parameter.GetMapfile().length()>=4 &&
        parameter.GetMapfile().substr(parameter.GetMapfile().length()-4)==".osm")  {

#if defined(HAVE_LIB_XML)
      PreprocessOSM preprocess;

      return preprocess.Import(parameter,
                               progress,
                               typeConfig);
#else
      progress.Error("Support for the OSM file format is not enabled!");
#endif
    }

    if (parameter.GetMapfile().length()>=4 &&
             parameter.GetMapfile().substr(parameter.GetMapfile().length()-4)==".pbf") {

#if defined(HAVE_LIB_PROTOBUF)
      PreprocessPBF preprocess;

      return preprocess.Import(parameter,
                               progress,
                               typeConfig);
#else
      progress.Error("Support for the PBF file format is not enabled!");
      return false;
#endif
    }

    progress.Error("Sorry, this file type is not yet supported!");
    return false;
  }

  bool OptimizeAreasLowZoomGenerator::HandleAreas(const ImportParameter& parameter,
                                                  Progress& progress,
                                                  const TypeConfig& typeConfig,
                                                  FileWriter& writer,
                                                  const TypeInfoSet& types,
                                                  std::list<TypeData>& typesData)
  {
    FileScanner scanner;
    // Everything smaller than 2mm should get dropped. Width, height and DPI come from the Nexus 4
    double dpi=320.0;
    double pixel=2.0/* mm */ * dpi / 25.4 /* inch */;

    progress.Info("Minimum visible size in pixel: "+NumberToString((unsigned long)pixel));

    try {
      scanner.Open(AppendFileToDir(parameter.GetDestinationDirectory(),
                                   AreaDataFile::AREAS_DAT),
                   FileScanner::Sequential,
                   parameter.GetWayDataMemoryMaped());

      TypeInfoSet                      typesToProcess(types);
      std::vector<std::list<AreaRef> > allAreas(typeConfig.GetTypeCount());

      while (true) {
        //
        // Load type data
        //

        TypeInfoSet loadedTypes;

        if (!GetAreas(typeConfig,
                      parameter,
                      progress,
                      scanner,
                      typesToProcess,
                      allAreas,
                      loadedTypes)) {
          return false;
        }

        typesToProcess.Remove(loadedTypes);

        for (const auto& type : loadedTypes) {
          progress.SetAction("Optimizing type "+ type->GetName());

          for (uint32_t level=parameter.GetOptimizationMinMag();
               level<=parameter.GetOptimizationMaxMag();
               level++) {
            Magnification      magnification; // Magnification, we optimize for
            std::list<AreaRef> optimizedAreas;

            magnification.SetLevel(level);

            OptimizeAreas(allAreas[type->GetIndex()],
                          optimizedAreas,
                          1280,768,
                          dpi,
                          pixel,
                          magnification,
                          parameter.GetOptimizationWayMethod());

            if (optimizedAreas.empty()) {
              progress.Debug("Empty optimization result for level "+NumberToString(level)+", no index generated");

              TypeData typeData;

              typeData.type=type;
              typeData.optLevel=level;

              typesData.push_back(typeData);

              continue;
            }

            progress.Info("Optimized from "+NumberToString(allAreas[type->GetIndex()].size())+" to "+NumberToString(optimizedAreas.size())+" areas");

            /*
            size_t optAreas=optimizedAreas.size();
            size_t optRoles=0;
            size_t optNodes=0;

            for (std::list<AreaRef>::const_iterator a=optimizedAreas.begin();
                a!=optimizedAreas.end();
                ++a) {
              AreaRef area=*a;

              optRoles+=area->rings.size();

              for (size_t r=0; r<area->rings.size(); r++) {
                optNodes+=area->rings[r].nodes.size();
              }
            }*/

            /*
            std::cout << "Areas: " << origAreas << " => " << optAreas << std::endl;
            std::cout << "Roles: " << origRoles << " => " << optRoles << std::endl;
            std::cout << "Nodes: " << origNodes << " => " << optNodes << std::endl;*/

            TypeData typeData;

//.........这里部分代码省略.........

  bool AreaAreaIndexGenerator::Import(const TypeConfigRef& typeConfig,
                                      const ImportParameter& parameter,
                                      Progress& progress)
  {
    FileScanner               scanner;
    size_t                    areas=0;         // Number of areas found
    size_t                    areasConsumed=0; // Number of areas consumed
    std::vector<double>       cellWidth;
    std::vector<double>       cellHeight;
    std::map<Pixel,AreaLeaf>  leafs;
    std::map<Pixel,AreaLeaf>  newAreaLeafs;

    cellWidth.resize(parameter.GetAreaAreaIndexMaxMag()+1);
    cellHeight.resize(parameter.GetAreaAreaIndexMaxMag()+1);

    for (size_t i=0; i<cellWidth.size(); i++) {
      cellWidth[i]=360.0/pow(2.0,(int)i);
    }

    for (size_t i=0; i<cellHeight.size(); i++) {
      cellHeight[i]=180.0/pow(2.0,(int)i);
    }

    //
    // Writing index file
    //

    progress.SetAction("Generating 'areaarea.idx'");

    FileWriter writer;
    FileOffset topLevelOffset=0;
    FileOffset topLevelOffsetOffset; // Offset of the toplevel entry

    if (!writer.Open(AppendFileToDir(parameter.GetDestinationDirectory(),
                                     "areaarea.idx"))) {
      progress.Error("Cannot create 'areaarea.idx'");
      return false;
    }

    if (!scanner.Open(AppendFileToDir(parameter.GetDestinationDirectory(),
                                         "areas.dat"),
                         FileScanner::Sequential,
                         parameter.GetWayDataMemoryMaped())) {
      progress.Error("Cannot open 'areas.dat'");
      return false;
    }

    writer.WriteNumber((uint32_t)parameter.GetAreaAreaIndexMaxMag()); // MaxMag

    if (!writer.GetPos(topLevelOffsetOffset)) {
      progress.Error("Cannot read current file position");
      return false;
    }

    if (!writer.WriteFileOffset(topLevelOffset)) {
      progress.Error("Cannot write top level entry offset");
      return false;
    }

    int l=parameter.GetAreaAreaIndexMaxMag();

    while (l>=0) {
      size_t areaLevelEntries=0;

      progress.Info(std::string("Storing level ")+NumberToString(l)+"...");

      newAreaLeafs.clear();

      SetOffsetOfChildren(leafs,newAreaLeafs);

      leafs=newAreaLeafs;

      // Areas

      if (areas==0 ||
          (areas>0 && areas>areasConsumed)) {
        uint32_t areaCount=0;

        progress.Info(std::string("Scanning areas.dat for areas of index level ")+NumberToString(l)+"...");

        if (!scanner.GotoBegin()) {
          progress.Error("Cannot go to begin of way file");
        }

        if (!scanner.Read(areaCount)) {
          progress.Error("Error while reading number of data entries in file");
          return false;
        }

        areas=0;
        for (uint32_t a=1; a<=areaCount; a++) {
          progress.SetProgress(a,areaCount);

          FileOffset offset;
          Area       area;

          scanner.GetPos(offset);

          if (!area.Read(typeConfig,
                         scanner)) {
//.........这里部分代码省略.........

  bool MergeAreasGenerator::Import(const TypeConfigRef& typeConfig,
                                   const ImportParameter& parameter,
                                   Progress& progress)
  {
    TypeInfoSet                    mergeTypes;
    FileScanner                    scanner;
    FileWriter                     writer;
    uint32_t                       areasWritten=0;

    for (const auto& type : typeConfig->GetTypes()) {
      if (type->CanBeArea() &&
          type->GetMergeAreas()) {
        mergeTypes.Set(type);
      }
    }

    std::unordered_set<Id> nodeUseMap;

    try {
      scanner.Open(AppendFileToDir(parameter.GetDestinationDirectory(),
                                   MergeAreaDataGenerator::AREAS_TMP),
                   FileScanner::Sequential,
                   parameter.GetRawWayDataMemoryMaped());

      if (!ScanAreaNodeIds(progress,
                           *typeConfig,
                           scanner,
                           mergeTypes,
                           nodeUseMap)) {
        return false;
      }

      uint32_t nodeCount=nodeUseMap.size();

      progress.Info("Found "+NumberToString(nodeCount)+" nodes as possible connection points for areas");

      /* ------ */

      writer.Open(AppendFileToDir(parameter.GetDestinationDirectory(),
                                  AREAS2_TMP));

      writer.Write(areasWritten);

      while (true) {
        TypeInfoSet                loadedTypes;
        std::vector<AreaMergeData> mergeJob(typeConfig->GetTypeCount());

        //
        // Load type data
        //

        progress.SetAction("Collecting area data by type");

        if (!GetAreas(parameter,
                      progress,
                      *typeConfig,
                      mergeTypes,
                      loadedTypes,
                      nodeUseMap,
                      scanner,
                      writer,
                      mergeJob,
                      areasWritten)) {
          return false;
        }

        // Merge

        progress.SetAction("Merging areas");

        for (const auto& type : loadedTypes) {
          if (!mergeJob[type->GetIndex()].areas.empty()) {
            progress.Info("Merging areas of type "+type->GetName());
            MergeAreas(progress,
                       nodeUseMap,
                       mergeJob[type->GetIndex()]);
            progress.Info("Reduced areas of '"+type->GetName()+"' from "+NumberToString(mergeJob[type->GetIndex()].areaCount)+" to "+NumberToString(mergeJob[type->GetIndex()].areaCount-mergeJob[type->GetIndex()].mergedAway.size()));

            mergeJob[type->GetIndex()].areas.clear();
          }
        }

        // Store back merge result

        if (!loadedTypes.Empty()) {
          if (!WriteMergeResult(progress,
                                *typeConfig,
                                scanner,
                                writer,
                                loadedTypes,
                                mergeJob,
                                areasWritten)) {
            return false;
          }

          mergeTypes.Remove(loadedTypes);
        }


        if (mergeTypes.Empty()) {
//.........这里部分代码省略.........

  /**
   * Load areas which has a one for the types given by types. If at leats one node
   * in one of the outer rings of the areas is marked in nodeUseMap as "used at least twice",
   * index it into the areas map.
   *
   * If the number of indexed areas is bigger than parameter.GetRawWayBlockSize() types are
   * dropped form areas until the number is again below the lmit.
   */
  bool MergeAreasGenerator::GetAreas(const ImportParameter& parameter,
                                     Progress& progress,
                                     const TypeConfig& typeConfig,
                                     const TypeInfoSet& candidateTypes,
                                     TypeInfoSet& loadedTypes,
                                     const std::unordered_set<Id>& nodeUseMap,
                                     FileScanner& scanner,
                                     FileWriter& writer,
                                     std::vector<AreaMergeData>& mergeJob,
                                     uint32_t& areasWritten)
  {
    bool        firstCall=areasWritten==0; // We are called for the first time
    uint32_t    areaCount=0;
    size_t      collectedAreasCount=0;
    size_t      typesWithAreas=0;

    for (auto& data : mergeJob) {
      data.areaCount=0;
    }

    loadedTypes=candidateTypes;

    scanner.GotoBegin();

    scanner.Read(areaCount);

    for (uint32_t a=1; a<=areaCount; a++) {
      uint8_t type;
      Id      id;
      AreaRef area=std::make_shared<Area>();

      progress.SetProgress(a,areaCount);

      scanner.Read(type);
      scanner.Read(id);

      area->ReadImport(typeConfig,
                       scanner);

      mergeJob[area->GetType()->GetIndex()].areaCount++;

      // This is an area of a type that does not get merged,
      // we directly store it in the target file.
      if (!loadedTypes.IsSet(area->GetType())) {
        if (firstCall) {
          writer.Write(type);
          writer.Write(id);

          area->WriteImport(typeConfig,
                            writer);

          areasWritten++;
        }

        continue;
      }

      bool isMergeCandidate=false;

      for (const auto& ring: area->rings) {
        if (!ring.IsOuterRing()) {
          continue;
        }

        for (const auto node : ring.nodes) {
          if (nodeUseMap.find(node.GetId())!=nodeUseMap.end()) {
            isMergeCandidate=true;
            break;
          }
        }

        if (isMergeCandidate) {
          break;
        }
      }

      if (!isMergeCandidate) {
        continue;
      }

      if (mergeJob[area->GetType()->GetIndex()].areas.empty()) {
        typesWithAreas++;
      }

      mergeJob[area->GetType()->GetIndex()].areas.push_back(area);

      collectedAreasCount++;

      while (collectedAreasCount>parameter.GetRawWayBlockSize() &&
             typesWithAreas>1) {
        TypeInfoRef victimType;

//.........这里部分代码省略.........

  bool OptimizeAreaWayIdsGenerator::ScanAreaIds(const ImportParameter& parameter,
                                                Progress& progress,
                                                const TypeConfig& typeConfig,
                                                NodeUseMap& nodeUseMap)
  {
    FileScanner scanner;
    uint32_t    dataCount=0;

    progress.SetAction("Scanning ids from 'areas2.tmp'");

    if (!scanner.Open(AppendFileToDir(parameter.GetDestinationDirectory(),
                                      "areas2.tmp"),
                      FileScanner::Sequential,
                      parameter.GetAreaDataMemoryMaped())) {
      progress.Error(std::string("Cannot open '")+scanner.GetFilename()+"'");
      return false;
    }

    if (!scanner.Read(dataCount)) {
      progress.Error("Error while reading number of data entries in file");
      return false;
    }

    for (uint32_t current=1; current<=dataCount; current++) {
      uint8_t type;
      Id      id;
      Area    data;

      progress.SetProgress(current,dataCount);

      if (!scanner.Read(type) ||
          !scanner.Read(id) ||
          !data.ReadImport(typeConfig,
                           scanner)) {
        progress.Error(std::string("Error while reading data entry ")+
                       NumberToString(current)+" of "+
                       NumberToString(dataCount)+
                       " in file '"+
                       scanner.GetFilename()+"'");

        return false;
      }

      for (const auto& ring: data.rings) {
        std::unordered_set<Id> nodeIds;

        if (!ring.GetType()->CanRoute()) {
          continue;
        }

        for (const auto id: ring.ids) {
          if (nodeIds.find(id)==nodeIds.end()) {
            nodeUseMap.SetNodeUsed(id);

            nodeIds.insert(id);
          }
        }
      }
    }

    if (!scanner.Close()) {
      progress.Error(std::string("Error while closing file '")+
                     scanner.GetFilename()+"'");
      return false;
    }

    return true;
  }

  bool OptimizeAreaWayIdsGenerator::CopyWays(const ImportParameter& parameter,
                                             Progress& progress,
                                             const TypeConfig& typeConfig,
                                             NodeUseMap& nodeUseMap)
  {
    FileScanner scanner;
    FileWriter  writer;
    uint32_t    dataCount=0;

    progress.SetAction("Copy data from 'wayway.tmp' to 'ways.tmp'");

    if (!scanner.Open(AppendFileToDir(parameter.GetDestinationDirectory(),
                                      "wayway.tmp"),
                                      FileScanner::Sequential,
                                      parameter.GetWayDataMemoryMaped())) {
      progress.Error(std::string("Cannot open '")+scanner.GetFilename()+"'");
      return false;
    }

    if (!scanner.Read(dataCount)) {
      progress.Error("Error while reading number of data entries in file");
      return false;
    }

    if (!writer.Open(AppendFileToDir(parameter.GetDestinationDirectory(),
                                     "ways.tmp"))) {
      progress.Error(std::string("Cannot create '")+writer.GetFilename()+"'");
      return false;
    }

    writer.Write(dataCount);

    for (uint32_t current=1; current<=dataCount; current++) {
      uint8_t type;
      Id      id;
      Way     data;

      progress.SetProgress(current,dataCount);

      if (!scanner.Read(type) ||
          !scanner.Read(id) ||
          !data.Read(typeConfig,
                     scanner)) {
        progress.Error(std::string("Error while reading data entry ")+
                       NumberToString(current)+" of "+
                       NumberToString(dataCount)+
                       " in file '"+
                       scanner.GetFilename()+"'");

        return false;
      }

      for (auto& id : data.ids) {
        if (!nodeUseMap.IsNodeUsedAtLeastTwice(id)) {
          id=0;
        }
      }

      if (!writer.Write(type) ||
          !writer.Write(id) ||
          !data.Write(typeConfig,
                      writer)) {
        progress.Error(std::string("Error while writing data entry to file '")+
                       writer.GetFilename()+"'");

        return false;
      }
    }

    if (!scanner.Close()) {
      progress.Error(std::string("Error while closing file '")+
                     scanner.GetFilename()+"'");
      return false;
    }

    if (!writer.Close()) {
      progress.Error(std::string("Error while closing file '")+
                     writer.GetFilename()+"'");
      return false;
    }

    return true;
  }