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.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.AppearanceFilter;
  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;
  import java.util.Set;
  import java.util.stream.Collectors;
  
  @CommandLine.Command(name = "remove-apps",
          description = "Removes appearances from city objects.")
  public class RemoveAppsCommand extends CityGMLTool {
      @CommandLine.Option(names = {"-t", "--theme"}, split = ",", paramLabel = "<name>",
              description = "Only remove appearances of the given theme(s). Use '" + AppearanceFilter.NULL_THEME +
                      "' to remove appearances without a theme attribute.")
      private Set<String> themes;
  
      @CommandLine.Option(names = "--only-textures",
              description = "Just remove textures.")
      private boolean onlyTextures;
  
      @CommandLine.Option(names = "--only-materials",
              description = "Just remove materials.")
      private boolean onlyMaterials;
  
      @CommandLine.Mixin
      private CityGMLOutputVersion version;
  
      @CommandLine.Mixin
      private CityGMLOutputOptions outputOptions;
  
      @CommandLine.Mixin
      OverwriteInputOption overwriteOption;
  
      @CommandLine.Mixin
      private InputOptions inputOptions;
  
      private final String suffix = "__removed_apps";
  
      @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());
  
          AppearanceFilter remover = AppearanceFilter.newInstance()
                  .withThemes(themes)
                  .onlyTextures(onlyTextures)
                  .onlyMaterials(onlyMaterials);
  
          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() + ".");
  
              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))) {
                      String themes = this.themes != null ? " with theme(s) " + this.themes.stream()
                              .map(theme -> "'" + theme + "'")
                              .collect(Collectors.joining(", ")) : "";
                      log.debug("Reading city objects and removing appearances" + themes + ".");
  
                      while (reader.hasNext()) {
                          AbstractFeature feature = reader.next();
                          if (remover.filter(feature)) {
                              writer.writeMember(feature);
                          }
                      }
  
                      if (!remover.getCounter().isEmpty()) {
                          remover.getCounter().forEach((key, value) -> log.debug("Removed " + key + " element(s): " + value));
                      } else {
                          log.debug("No appearance elements removed based on input parameters.");
                      }
                  }
              } 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);
              } finally {
                  remover.reset();
              }
  
              if (overwriteOption.isOverwrite()) {
                  log.debug("Replacing input file with temporary output file.");
                  replaceInputFile(inputFile, outputFile);
              }
          }
  
          return CommandLine.ExitCode.OK;
      }
  
      @Override
      public void preprocess(CommandLine commandLine) {
          if (onlyTextures && onlyMaterials) {
              throw new CommandLine.ParameterException(commandLine,
                      "Error: --only-textures and --only-materials are mutually exclusive (specify only one)");
          }
      }
  }
  