001 /*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018 package org.apache.commons.jci.readers;
019
020 import java.io.File;
021 import java.util.ArrayList;
022 import java.util.List;
023
024 import org.apache.commons.io.FileUtils;
025
026 /**
027 * A simple file system based Reader implementation
028 *
029 * @author tcurdt
030 */
031 public final class FileResourceReader implements ResourceReader {
032
033 private final File root;
034
035 public FileResourceReader( final File pRoot ) {
036 root = pRoot;
037 }
038
039 public boolean isAvailable( final String pResourceName ) {
040 return new File(root, pResourceName).exists();
041 }
042
043 public byte[] getBytes( final String pResourceName ) {
044 try {
045 return FileUtils.readFileToString(new File(root, pResourceName), "UTF-8").getBytes();
046 } catch(Exception e) {
047 return null;
048 }
049 }
050
051 /**
052 * @deprecated
053 */
054 @Deprecated
055 public String[] list() {
056 final List<String> files = new ArrayList<String>();
057 list(root, files);
058 return files.toArray(new String[files.size()]);
059 }
060
061 /**
062 * @deprecated
063 */
064 @Deprecated
065 private void list( final File pFile, final List<String> pFiles ) {
066 if (pFile.isDirectory()) {
067 final File[] directoryFiles = pFile.listFiles();
068 for (int i = 0; i < directoryFiles.length; i++) {
069 list(directoryFiles[i], pFiles);
070 }
071 } else {
072 pFiles.add(pFile.getAbsolutePath().substring(root.getAbsolutePath().length()+1));
073 }
074 }
075 }