code: /*
   * citygml-tools - Collection of tools for processing CityGML files
   * https://github.com/citygml4j/citygml-tools
   *
   * citygml-tools is part of the citygml4j project
   *
   * Copyright 2018-2023 Claus Nagel <claus.nagel@gmail.com>
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package org.citygml4j.tools.command;
  
  import org.citygml4j.core.model.appearance.Appearance;
  import org.citygml4j.core.model.cityobjectgroup.CityObjectGroup;
  import org.citygml4j.core.model.core.AbstractFeature;
  import org.citygml4j.tools.ExecutionException;
  import org.citygml4j.tools.option.*;
  import org.citygml4j.tools.util.GlobalObjects;
  import org.citygml4j.tools.util.GlobalObjectsReader;
  import org.citygml4j.tools.util.InputFiles;
  import org.citygml4j.tools.util.SubsetFilter;
  import org.citygml4j.xml.reader.*;
  import org.citygml4j.xml.writer.CityGMLChunkWriter;
  import org.citygml4j.xml.writer.CityGMLOutputFactory;
  import org.citygml4j.xml.writer.CityGMLWriteException;
  import picocli.CommandLine;
  
  import java.nio.file.Path;
  import java.util.List;
  
  @CommandLine.Command(name = "subset",
          description = "Creates a subset of city objects based on filter criteria.")
  public class SubsetCommand extends CityGMLTool {
      @CommandLine.ArgGroup(exclusive = false)
      private TypeNamesOption typeNamesOption;
  
      @CommandLine.ArgGroup
      private IdOption idOption;
  
      @CommandLine.ArgGroup(exclusive = false)
      private BoundingBoxOption boundingBoxOption;
  
      @CommandLine.Option(names = "--invert",
              description = "Invert the filter criteria.")
      private boolean invert;
  
      @CommandLine.ArgGroup(exclusive = false)
      private CounterOption counterOption;
  
      @CommandLine.Option(names = "--no-remove-group-members", negatable = true, defaultValue = "true",
              description = "Remove group members that do not satisfy the filter criteria from city object groups " +
                      "(default: ${DEFAULT-VALUE}).")
      private boolean removeGroupMembers;
  
      @CommandLine.Mixin
      private CityGMLOutputVersion version;
  
      @CommandLine.Mixin
      private CityGMLOutputOptions outputOptions;
  
      @CommandLine.Mixin
      OverwriteInputOption overwriteOption;
  
      @CommandLine.Mixin
      private InputOptions inputOptions;
  
      private final String suffix = "__subset";
  
      @Override
      public Integer call() throws ExecutionException {
          log.debug("Searching for CityGML input files.");
          List<Path> inputFiles = InputFiles.of(inputOptions.getFiles())
                  .withFilter(path -> !stripFileExtension(path).endsWith(suffix))
                  .find();
  
          if (inputFiles.isEmpty()) {
              log.warn("No files found at " + inputOptions.joinFiles() + ".");
              return CommandLine.ExitCode.OK;
          }
  
          log.info("Found " + inputFiles.size() + " file(s) at " + inputOptions.joinFiles() + ".");
  
          CityGMLInputFactory in = createCityGMLInputFactory().withChunking(ChunkOptions.defaults());
          CityGMLOutputFactory out = createCityGMLOutputFactory(version.getVersion());
  
          for (int i = 0; i < inputFiles.size(); i++) {
              Path inputFile = inputFiles.get(i);
              Path outputFile = getOutputFile(inputFile, suffix, overwriteOption.isOverwrite());
  
              log.info("[" + (i + 1) + "|" + inputFiles.size() + "] Processing file " + inputFile.toAbsolutePath() + ".");
  
              log.debug("Reading global appearances, groups and implicit geometries from input file.");
              GlobalObjects globalObjects = GlobalObjectsReader.defaults()
                      .read(inputFile, getCityGMLContext());
  
              SubsetFilter subsetFilter = SubsetFilter.newInstance()
                      .withGlobalObjects(globalObjects)
                      .withTypeNamesFilter(typeNamesOption, getCityGMLContext())
                      .withIdFilter(idOption)
                      .withBoundingBoxFilter(boundingBoxOption != null ? boundingBoxOption.toBoundingBoxFilter() : null)
                      .invertFilterCriteria(invert)
                      .withCounterOption(counterOption)
                      .removeGroupMembers(removeGroupMembers);
  
              try (CityGMLReader reader = createSkippingCityGMLReader(in, inputFile, inputOptions,
                      "CityObjectGroup", "Appearance")) {
                  FeatureInfo cityModelInfo = getFeatureInfo(reader);
                  if (cityModelInfo != null && subsetFilter.getBoundingBoxFilter() != null) {
                      subsetFilter.getBoundingBoxFilter().withRootReferenceSystem(cityModelInfo);
                  }
  
                  if (!version.isSetVersion()) {
                      setCityGMLVersion(reader, out);
                  }
  
                  if (overwriteOption.isOverwrite()) {
                      log.debug("Writing temporary output file " + outputFile.toAbsolutePath() + ".");
                  } else {
                      log.info("Writing output to file " + outputFile.toAbsolutePath() + ".");
                  }
  
                  try (CityGMLChunkWriter writer = createCityGMLChunkWriter(out, outputFile, outputOptions)
                          .withCityModelInfo(cityModelInfo)) {
                      log.debug("Reading and filtering city objects based on the specified filter criteria.");
                      while (reader.hasNext()) {
                          AbstractFeature feature = reader.next();
                          if (subsetFilter.filter(feature, reader.getName(), reader.getPrefix())) {
                              writer.writeMember(feature);
                          }
                      }
  
                      subsetFilter.postprocess();
  
                      for (CityObjectGroup group : globalObjects.getCityObjectGroups()) {
                          writer.writeMember(group);
                      }
  
                      for (Appearance appearance : globalObjects.getAppearances()) {
                          writer.writeMember(appearance);
                      }
                  }
              } catch (CityGMLReadException e) {
                  throw new ExecutionException("Failed to read file " + inputFile.toAbsolutePath() + ".", e);
              } catch (CityGMLWriteException e) {
                  throw new ExecutionException("Failed to write file " + outputFile.toAbsolutePath() + ".", e);
              }
  
              if (overwriteOption.isOverwrite()) {
                  log.debug("Replacing input file with temporary output file.");
                  replaceInputFile(inputFile, outputFile);
              }
  
              if (!subsetFilter.getCounter().isEmpty()) {
                  log.debug("The following top-level city objects satisfied the filter criteria.");
                  subsetFilter.getCounter().forEach((key, value) -> log.debug(key + ": " + value));
              } else {
                  log.debug("No top-level city object satisfies the filter criteria.");
              }
          }
  
          return CommandLine.ExitCode.OK;
      }
  }
  