/*
* Geotoolkit.org - An Open Source Java GIS Toolkit
* http://www.geotoolkit.org
*
* (C) 2008-2015, Open Source Geospatial Foundation (OSGeo)
* (C) 2009-2015, Geomatys
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package org.geotoolkit.nio;
import java.io.IOException;
import java.nio.file.*;
import java.nio.file.attribute.BasicFileAttributes;
/**
* Java NIO FileVisitor that copy visited files and directory recursively into target {@link Path}
*
* Usage example :
* <code>
* Path sourcePath = Paths.get("/some/path")
* Path targetPath = Paths.get("/output/path")
* Files.walkFileTree(sourcePath, new CopyFileVisitor(targetPath));
* </code>
*
* @author Quentin Boileau (Geomatys)
*/
public class CopyFileVisitor extends SimpleFileVisitor<Path> {
private final Path targetPath;
private final CopyOption[] copyOption;
private Path sourcePath = null;
public CopyFileVisitor(Path targetPath, CopyOption... copyOption) {
this.targetPath = targetPath;
this.copyOption = copyOption;
}
@Override
public FileVisitResult preVisitDirectory(final Path dir,
final BasicFileAttributes attrs) throws IOException {
if (sourcePath == null) {
sourcePath = dir;
} else {
final Path relativize = sourcePath.relativize(dir);
Files.createDirectories(targetPath.resolve(relativize.toString()));
}
return FileVisitResult.CONTINUE;
}
@Override
public FileVisitResult visitFile(final Path file,
final BasicFileAttributes attrs) throws IOException {
if (sourcePath == null) {
sourcePath = file.getParent();
}
final Path relativize = sourcePath.relativize(file);
Files.copy(file, targetPath.resolve(relativize.toString()), copyOption);
return FileVisitResult.CONTINUE;
}
}