content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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.apache.camel.itest.springboot.arquillian.container.util;
  
  import java.io.File;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  import java.nio.file.FileVisitResult;
  import java.nio.file.Files;
  import java.nio.file.Path;
  import java.nio.file.SimpleFileVisitor;
  import java.nio.file.attribute.BasicFileAttributes;
  
  import org.jboss.arquillian.container.se.api.ClassPathDirectory;
  import org.jboss.arquillian.container.spi.client.container.DeploymentException;
  import org.jboss.shrinkwrap.api.Node;
  import org.jboss.shrinkwrap.api.asset.ClassAsset;
  
  public final class FileDeploymentUtils {
  
      private static final char DELIMITER_RESOURCE_PATH = '/';
      private static final char DELIMITER_CLASS_NAME_PATH = '.';
      private static final String EXTENSION_CLASS = ".class";
  
      private FileDeploymentUtils() {
      }
  
      public static void materializeClass(File entryDirectory, ClassAsset classAsset)
              throws DeploymentException, IOException {
          File classDirectory;
          if (classAsset.getSource().getPackage() != null) {
              classDirectory = new File(entryDirectory, classAsset.getSource().getPackage().getName()
                      .replace(DELIMITER_CLASS_NAME_PATH, File.separatorChar));
              if (!classDirectory.mkdirs()) {
                  throw new DeploymentException("Could not create class package directory: " + classDirectory);
              }
          } else {
              classDirectory = entryDirectory;
          }
          File classFile = new File(classDirectory, classAsset.getSource().getSimpleName().concat(EXTENSION_CLASS));
          classFile.createNewFile();
          try (InputStream in = classAsset.openStream(); OutputStream out = new FileOutputStream(classFile)) {
              copy(in, out);
          }
      }
  
      public static void materializeSubdirectories(File entryDirectory, Node node)
              throws DeploymentException, IOException {
          for (Node child : node.getChildren()) {
              if (child.getAsset() == null) {
                  materializeSubdirectories(entryDirectory, child);
              } else {
                  if (ClassPathDirectory.isMarkerFileArchivePath(child.getPath())) {
                      // Do not materialize the marker file
                      continue;
                  }
                  // E.g. META-INF/my-super-descriptor.xml
                  File resourceFile = new File(entryDirectory,
                          child.getPath().get().replace(DELIMITER_RESOURCE_PATH, File.separatorChar));
                  File resoureDirectory = resourceFile.getParentFile();
                  if (!resoureDirectory.exists() && !resoureDirectory.mkdirs()) {
                      throw new DeploymentException("Could not create class path directory: " + entryDirectory);
                  }
                  resourceFile.createNewFile();
                  try (InputStream in = child.getAsset().openStream();
                          OutputStream out = new FileOutputStream(resourceFile)) {
                      copy(in, out);
                  }
                  child.getPath().get();
              }
          }
      }
  
      public static void copy(InputStream in, OutputStream out) throws IOException {
          final byte[] buffer = new byte[8192];
          int n = 0;
          while (-1 != (n = in.read(buffer))) {
              out.write(buffer, 0, n);
          }
          out.flush();
      }
  
      public static void deleteRecursively(Path directory) throws IOException {
          Files.walkFileTree(directory, new SimpleFileVisitor<Path>() {
              @Override
              public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
                  Files.delete(file);
                  return FileVisitResult.CONTINUE;
              }
  
              @Override
              public FileVisitResult postVisitDirectory(Path dir, IOException exc) throws IOException {
                  Files.delete(dir);
                  return FileVisitResult.CONTINUE;
              }
          });
      }
  
      public static void deleteContent(Path directory) throws IOException {
          Files.walkFileTree(directory, new SimpleFileVisitor<Path>() {
              @Override
              public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
                  Files.delete(file);
                  return FileVisitResult.CONTINUE;
              }
          });
      }
  }
  