private static void directoryEntriesInPath(
List<File> collectedFiles, File parentDir, FileFilter filter) {
if ((filter == null) || ((filter != null) && (filter.accept(parentDir)))) {
collectedFiles.add(parentDir);
}
File[] files = parentDir.listFiles();
if (files != null) {
for (int numFiles = files.length, i = 0; i < numFiles; i++) {
File currentFile = files[i];
if ((filter == null) || ((filter != null) && (filter.accept(currentFile)))) {
collectedFiles.add(currentFile);
}
if (currentFile.isDirectory()) {
FileUtils.directoryEntriesInPath(collectedFiles, currentFile, filter);
}
}
}
}
/**
* Recursively collect all Files in the given directory and all its subdirectories, applying the
* given FileFilter.
*
* @param rootDirectory the top level directory used for the search
* @param filter a FileFilter used for accepting/rejecting individual entries
* @return a List of found Files
*/
public static List<File> directoryEntriesInPath(File rootDirectory, FileFilter filter) {
if (rootDirectory == null) {
throw new IllegalArgumentException("File must not be null!");
}
if (!rootDirectory.exists()) {
throw new IllegalArgumentException("File does not exist!");
}
ArrayList<File> collectedFiles = new ArrayList<File>(32);
if (rootDirectory.isFile()) {
if ((filter == null) || ((filter != null) && (filter.accept(rootDirectory)))) {
collectedFiles.add(rootDirectory);
}
return collectedFiles;
}
FileUtils.directoryEntriesInPath(collectedFiles, rootDirectory, filter);
return collectedFiles;
}
/**
* Recursively collect all Files in the given directory and all its subdirectories.
*
* @param rootDirectory the top level directory used for the search
* @return a List of found Files
*/
public static List<File> directoryEntriesInPath(File rootDirectory) {
return FileUtils.directoryEntriesInPath(rootDirectory, null);
}