| /* |
| * 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.maven.plugins.assembly.io; |
| |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.nio.ByteBuffer; |
| import java.nio.channels.FileChannel; |
| |
| /** |
| * file location implementation. |
| * |
| */ |
| class FileLocation implements Location { |
| |
| private File file; |
| private FileChannel channel; |
| private final String specification; |
| private FileInputStream stream; |
| |
| /** |
| * @param file {@link File} |
| * @param specification spec |
| */ |
| FileLocation(File file, String specification) { |
| this.file = file; |
| this.specification = specification; |
| } |
| |
| /** |
| * @param specification spec |
| */ |
| FileLocation(String specification) { |
| this.specification = specification; |
| } |
| |
| @Override |
| public void close() { |
| if ((channel != null) && channel.isOpen()) { |
| try { |
| channel.close(); |
| } catch (IOException e) { |
| // swallow it. |
| } |
| } |
| |
| if (stream != null) { |
| try { |
| stream.close(); |
| } catch (IOException e) { |
| // swallow it. |
| } |
| } |
| } |
| |
| @Override |
| public File getFile() throws IOException { |
| initFile(); |
| |
| return unsafeGetFile(); |
| } |
| |
| /** |
| * @return {@link File} |
| */ |
| File unsafeGetFile() { |
| return file; |
| } |
| |
| /** |
| * initialize file. |
| * @throws IOException in case of error |
| */ |
| protected void initFile() throws IOException { |
| if (file == null) { |
| file = new File(specification); |
| } |
| } |
| |
| /** |
| * @param file {@link File} |
| */ |
| protected void setFile(File file) { |
| if (channel != null) { |
| throw new IllegalStateException("Location is already open; cannot setFile(..)."); |
| } |
| |
| this.file = file; |
| } |
| |
| @Override |
| public String getSpecification() { |
| return specification; |
| } |
| |
| @Override |
| public void open() throws IOException { |
| if (stream == null) { |
| initFile(); |
| |
| stream = new FileInputStream(file); |
| channel = stream.getChannel(); |
| } |
| } |
| |
| @Override |
| public int read(ByteBuffer buffer) throws IOException { |
| open(); |
| return channel.read(buffer); |
| } |
| |
| @Override |
| public int read(byte[] buffer) throws IOException { |
| open(); |
| return channel.read(ByteBuffer.wrap(buffer)); |
| } |
| |
| @Override |
| public InputStream getInputStream() throws IOException { |
| open(); |
| return stream; |
| } |
| } |