org.duracloud.sync.util.DirectoryUtil Maven / Gradle / Ivy
/*
* The contents of this file are subject to the license and copyright
* detailed in the LICENSE and NOTICE files at the root of the source
* tree and available online at
*
* http://duracloud.org/license/
*/
package org.duracloud.sync.util;
import java.io.File;
import java.util.Arrays;
import java.util.Comparator;
import org.apache.commons.io.FileUtils;
/**
* @author: Bill Branan
* Date: Mar 19, 2010
*/
public class DirectoryUtil {
private DirectoryUtil() {
// Ensures no instances are made of this class, as there are only static members.
}
/*
* Provides a listing of files in a directory, sorted in order
* of most to least recent.
*/
public static File[] listFilesSortedByModDate(File dir) {
File[] backupDirFiles = dir.listFiles();
Arrays.sort(backupDirFiles, new FileComparator());
return backupDirFiles;
}
private static class FileComparator implements Comparator {
public int compare(File file1, File file2) {
if (file1.lastModified() == file2.lastModified()) {
return 0;
} else {
return FileUtils.isFileNewer(file1, file2) ? -1 : 1;
}
}
}
}