/*
    * 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.commons.jci.readers;
  
  import java.io.File;
  import java.util.ArrayList;
  import java.util.List;
  
  import org.apache.commons.io.FileUtils;
  
  /**
   * A simple file system based Reader implementation
   * 
   * @author tcurdt
   */
  public final class FileResourceReader implements ResourceReader {
  
      private final File root;
  
      public FileResourceReader( final File pRoot ) {
          root = pRoot;        
      }
      
      public boolean isAvailable( final String pResourceName ) {
          return new File(root, pResourceName).exists();
      }
  
      public byte[] getBytes( final String pResourceName ) {
          try {
              return FileUtils.readFileToString(new File(root, pResourceName), "UTF-8").getBytes();
          } catch(Exception e) {
              return null;
          }
      }
      
      /**
       * @deprecated
       */
      @Deprecated
      public String[] list() {
          final List<String> files = new ArrayList<String>();
          list(root, files);
          return files.toArray(new String[files.size()]);
      }
  
      /**
       * @deprecated
       */
      @Deprecated
      private void list( final File pFile, final List<String> pFiles ) {
          if (pFile.isDirectory()) {
              final File[] directoryFiles = pFile.listFiles();
              for (int i = 0; i < directoryFiles.length; i++) {
                  list(directoryFiles[i], pFiles);
              }
          } else {
              pFiles.add(pFile.getAbsolutePath().substring(root.getAbsolutePath().length()+1));
          }
      }   
  }