| package org.eclipse.aether.internal.impl; |
| |
| /* |
| * 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. |
| */ |
| |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.nio.ByteBuffer; |
| import java.nio.charset.StandardCharsets; |
| |
| import javax.inject.Named; |
| |
| import org.eclipse.aether.spi.io.FileProcessor; |
| |
| /** |
| * A utility class helping with file-based operations. |
| */ |
| @Named |
| public class DefaultFileProcessor |
| implements FileProcessor |
| { |
| |
| /** |
| * Thread-safe variant of {@link File#mkdirs()}. Creates the directory named by the given abstract pathname, |
| * including any necessary but nonexistent parent directories. Note that if this operation fails it may have |
| * succeeded in creating some of the necessary parent directories. |
| * |
| * @param directory The directory to create, may be {@code null}. |
| * @return {@code true} if and only if the directory was created, along with all necessary parent directories; |
| * {@code false} otherwise |
| */ |
| public boolean mkdirs( File directory ) |
| { |
| if ( directory == null ) |
| { |
| return false; |
| } |
| |
| if ( directory.exists() ) |
| { |
| return false; |
| } |
| if ( directory.mkdir() ) |
| { |
| return true; |
| } |
| |
| File canonDir; |
| try |
| { |
| canonDir = directory.getCanonicalFile(); |
| } |
| catch ( IOException e ) |
| { |
| return false; |
| } |
| |
| File parentDir = canonDir.getParentFile(); |
| return ( parentDir != null && ( mkdirs( parentDir ) || parentDir.exists() ) && canonDir.mkdir() ); |
| } |
| |
| public void write( File target, String data ) |
| throws IOException |
| { |
| mkdirs( target.getAbsoluteFile().getParentFile() ); |
| |
| OutputStream out = null; |
| try |
| { |
| out = new FileOutputStream( target ); |
| |
| if ( data != null ) |
| { |
| out.write( data.getBytes( StandardCharsets.UTF_8 ) ); |
| } |
| |
| out.close(); |
| out = null; |
| } |
| finally |
| { |
| try |
| { |
| if ( out != null ) |
| { |
| out.close(); |
| } |
| } |
| catch ( final IOException e ) |
| { |
| // Suppressed due to an exception already thrown in the try block. |
| } |
| } |
| } |
| |
| public void write( File target, InputStream source ) |
| throws IOException |
| { |
| mkdirs( target.getAbsoluteFile().getParentFile() ); |
| |
| OutputStream out = null; |
| try |
| { |
| out = new FileOutputStream( target ); |
| |
| copy( out, source, null ); |
| |
| out.close(); |
| out = null; |
| } |
| finally |
| { |
| try |
| { |
| if ( out != null ) |
| { |
| out.close(); |
| } |
| } |
| catch ( final IOException e ) |
| { |
| // Suppressed due to an exception already thrown in the try block. |
| } |
| } |
| } |
| |
| public void copy( File source, File target ) |
| throws IOException |
| { |
| copy( source, target, null ); |
| } |
| |
| public long copy( File source, File target, ProgressListener listener ) |
| throws IOException |
| { |
| long total = 0L; |
| |
| InputStream in = null; |
| OutputStream out = null; |
| try |
| { |
| in = new FileInputStream( source ); |
| |
| mkdirs( target.getAbsoluteFile().getParentFile() ); |
| |
| out = new FileOutputStream( target ); |
| |
| total = copy( out, in, listener ); |
| |
| out.close(); |
| out = null; |
| |
| in.close(); |
| in = null; |
| } |
| finally |
| { |
| try |
| { |
| if ( out != null ) |
| { |
| out.close(); |
| } |
| } |
| catch ( final IOException e ) |
| { |
| // Suppressed due to an exception already thrown in the try block. |
| } |
| finally |
| { |
| try |
| { |
| if ( in != null ) |
| { |
| in.close(); |
| } |
| } |
| catch ( final IOException e ) |
| { |
| // Suppressed due to an exception already thrown in the try block. |
| } |
| } |
| } |
| |
| return total; |
| } |
| |
| private long copy( OutputStream os, InputStream is, ProgressListener listener ) |
| throws IOException |
| { |
| long total = 0L; |
| |
| ByteBuffer buffer = ByteBuffer.allocate( 1024 * 32 ); |
| byte[] array = buffer.array(); |
| |
| while ( true ) |
| { |
| int bytes = is.read( array ); |
| if ( bytes < 0 ) |
| { |
| break; |
| } |
| |
| os.write( array, 0, bytes ); |
| |
| total += bytes; |
| |
| if ( listener != null && bytes > 0 ) |
| { |
| try |
| { |
| buffer.rewind(); |
| buffer.limit( bytes ); |
| listener.progressed( buffer ); |
| } |
| catch ( Exception e ) |
| { |
| // too bad |
| } |
| } |
| } |
| |
| return total; |
| } |
| |
| public void move( File source, File target ) |
| throws IOException |
| { |
| if ( !source.renameTo( target ) ) |
| { |
| copy( source, target ); |
| |
| target.setLastModified( source.lastModified() ); |
| |
| source.delete(); |
| } |
| } |
| |
| } |