content: /*
   * Copyright (C) 2013 The Android Open Source Project
   *
   * 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 com.taobao.android.multidex;
  
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.FileNotFoundException;
  import java.io.InputStream;
  import java.util.ArrayList;
  
  /**
   * A folder element.
   */
  class FolderPathElement implements ClassPathElement {
  
      private File baseFolder;
  
      public FolderPathElement(File baseFolder) {
          this.baseFolder = baseFolder;
      }
  
      @Override
      public InputStream open(String path) throws FileNotFoundException {
          return new FileInputStream(new File(baseFolder,
                  path.replace(SEPARATOR_CHAR, File.separatorChar)));
      }
  
      @Override
      public void close() {
      }
  
      @Override
      public Iterable<String> list() {
          ArrayList<String> result = new ArrayList<String>();
          collect(baseFolder, "", result);
          return result;
      }
  
      private void collect(File folder, String prefix, ArrayList<String> result) {
          for (File file : folder.listFiles()) {
              if (file.isDirectory()) {
                  collect(file, prefix + SEPARATOR_CHAR + file.getName(), result);
              } else {
                  result.add(prefix + SEPARATOR_CHAR + file.getName());
              }
          }
      }
  
  }
  