public static boolean processFilesRecursively(
@NotNull File root,
@NotNull Processor<File> processor,
@Nullable final Processor<File> directoryFilter) {
final LinkedList<File> queue = new LinkedList<File>();
queue.add(root);
while (!queue.isEmpty()) {
final File file = queue.removeFirst();
if (!processor.process(file)) return false;
if (file.isDirectory() && (directoryFilter == null || directoryFilter.process(file))) {
final File[] children = file.listFiles();
if (children != null) {
ContainerUtil.addAll(queue, children);
}
}
}
return true;
}
public static boolean processFirstBytes(
@NotNull InputStream stream, int length, @NotNull Processor<ByteSequence> processor)
throws IOException {
final byte[] bytes = BUFFER.get();
assert bytes.length >= length
: "Cannot process more than " + bytes.length + " in one call, requested:" + length;
int n = stream.read(bytes, 0, length);
if (n <= 0) return false;
return processor.process(new ByteSequence(bytes, 0, n));
}
public static boolean visitFiles(@NotNull File root, @NotNull Processor<File> processor) {
if (!processor.process(root)) {
return false;
}
File[] children = root.listFiles();
if (children != null) {
for (File child : children) {
if (!visitFiles(child, processor)) {
return false;
}
}
}
return true;
}