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.core.AbstractFeature;
  import org.citygml4j.tools.ExecutionException;
  import org.citygml4j.tools.option.CityGMLOutputOptions;
  import org.citygml4j.tools.option.CityGMLOutputVersion;
  import org.citygml4j.tools.option.InputOptions;
  import org.citygml4j.tools.option.OverwriteInputOption;
  import org.citygml4j.tools.util.GlobalObjectsReader;
  import org.citygml4j.tools.util.HeightChanger;
  import org.citygml4j.tools.util.InputFiles;
  import org.citygml4j.xml.reader.ChunkOptions;
  import org.citygml4j.xml.reader.CityGMLInputFactory;
  import org.citygml4j.xml.reader.CityGMLReadException;
  import org.citygml4j.xml.reader.CityGMLReader;
  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 = "change-height",
          description = "Changes the height values of city objects by a given offset.")
  public class ChangeHeightCommand extends CityGMLTool {
      @CommandLine.Option(names = {"-o", "--offset"}, paramLabel = "<double>", required = true,
              description = "Offset to add to height values.")
      private double offset;
  
      @CommandLine.Option(names = {"-m", "--mode"}, defaultValue = "relative",
              description = "Height mode: ${COMPLETION-CANDIDATES} (default: ${DEFAULT-VALUE}).")
      private HeightChanger.Mode mode;
  
      @CommandLine.Mixin
      private CityGMLOutputVersion version;
  
      @CommandLine.Mixin
      private CityGMLOutputOptions outputOptions;
  
      @CommandLine.Mixin
      OverwriteInputOption overwriteOption;
  
      @CommandLine.Mixin
      private InputOptions inputOptions;
  
      private final String suffix = "__changed_height";
  
      @Override
      public Integer call() throws ExecutionException {
          if (offset == 0 && mode == HeightChanger.Mode.RELATIVE) {
              log.warn("Height values do not change for offset = " + offset + " and mode = " + mode + ".");
              log.info("Cancelling the operation.");
              return CommandLine.ExitCode.OK;
          }
  
          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() + ".");
  
              HeightChanger heightChanger = HeightChanger.of(offset).withMode(mode);
  
              log.debug("Reading implicit geometries from input file.");
              heightChanger.withTemplateGeometries(GlobalObjectsReader.onlyImplicitGeometries()
                      .read(inputFile, getCityGMLContext())
                      .getTemplateGeometries());
  
              try (CityGMLReader reader = createCityGMLReader(in, inputFile, inputOptions)) {
                  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(getFeatureInfo(reader))) {
                      log.debug("Reading city objects and changing their height values.");
                      while (reader.hasNext()) {
                          AbstractFeature feature = reader.next();
                          if (!(feature instanceof Appearance)) {
                              heightChanger.changeHeight(feature);
                          }
  
                          writer.writeMember(feature);
                      }
                  }
              } 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);
              }
          }
  
          return CommandLine.ExitCode.OK;
      }
  }
  