org.hortonmachine.gears.utils.files.FileTraversal Maven / Gradle / Ivy
/*
* JGrass - Free Open Source Java GIS http://www.jgrass.org
* (C) HydroloGIS - www.hydrologis.com
*
* This library is free software; you can redistribute it and/or modify it under
* the terms of the GNU Library General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option) any
* later version.
*
* 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 Library General Public License for more
* details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; if not, write to the Free Foundation, Inc., 59
* Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.hortonmachine.gears.utils.files;
import java.io.File;
import java.io.FileFilter;
import java.io.IOException;
/**
* From: http://vafer.org/blog/20071112204524/
*
* Usage done by overriding:
*
* new FileTraversal() {
* public void onFile( final File f ) {
* System.out.println(f);
* }
* }.traverse(new File("somedir"));
*
*/
public class FileTraversal {
private FileFilter filter;
public FileTraversal() {
}
public FileTraversal( FileFilter filter ) {
this.filter = filter;
}
public final void traverse( final File f ) throws IOException {
if (f.isDirectory()) {
onDirectory(f);
final File[] childs;
if (filter != null) {
childs = f.listFiles(filter);
} else {
childs = f.listFiles();
}
for( File child : childs ) {
traverse(child);
}
return;
}
onFile(f);
}
public void onDirectory( final File d ) {
}
public void onFile( final File f ) {
}
}