code: /**
   * This file is part of Eclipse Steady.
   *
   * 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.
   *
   * SPDX-License-Identifier: Apache-2.0
   * SPDX-FileCopyrightText: Copyright (c) 2018-2020 SAP SE or an SAP affiliate company and Eclipse Steady contributors
   */
  package org.eclipse.steady.shared.util;
  
  import java.nio.file.FileVisitResult;
  import java.nio.file.Path;
  import java.nio.file.attribute.BasicFileAttributes;
  
  import javax.validation.constraints.NotNull;
  
  import org.apache.logging.log4j.Logger;
  
  /**
   * Searches for all directories containing a file with a given name.
   */
  public class DirWithFileSearch extends AbstractFileSearch {
  
    private static final Logger log =
        org.apache.logging.log4j.LogManager.getLogger(DirWithFileSearch.class);
  
    private String filename = null;
  
    /**
     * <p>Constructor for DirWithFileSearch.</p>
     *
     * @param _filename a {@link java.lang.String} object.
     */
    public DirWithFileSearch(@NotNull String _filename) {
      this.filename = _filename;
    }
  
    /** {@inheritDoc} */
    @Override
    public FileVisitResult preVisitDirectory(Path _f, BasicFileAttributes attrs) {
      if (_f.toFile().isDirectory() && !this.foundFile(_f)) {
        if (DirUtil.containsFile(_f.toFile(), this.filename)) {
          this.addFile(_f);
        }
      }
      return FileVisitResult.CONTINUE;
    }
  }
  