/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.sshd.client.subsystem.sftp;
import java.nio.file.Path;
import java.util.Iterator;
import java.util.NoSuchElementException;
/**
* @author <a href="mailto:dev@mina.apache.org">Apache MINA SSHD Project</a>
*/
public class SftpPathIterator implements Iterator<Path> {
private final SftpPath p;
private final Iterator<? extends SftpClient.DirEntry> it;
private boolean dotIgnored;
private boolean dotdotIgnored;
private SftpClient.DirEntry curEntry;
public SftpPathIterator(SftpPath path, Iterable<? extends SftpClient.DirEntry> iter) {
this(path, (iter == null) ? null : iter.iterator());
}
public SftpPathIterator(SftpPath path, Iterator<? extends SftpClient.DirEntry> iter) {
p = path;
it = iter;
curEntry = nextEntry();
}
@Override
public boolean hasNext() {
return curEntry != null;
}
@Override
public Path next() {
if (curEntry == null) {
throw new NoSuchElementException("No next entry");
}
SftpClient.DirEntry entry = curEntry;
curEntry = nextEntry();
return p.resolve(entry.getFilename());
}
private SftpClient.DirEntry nextEntry() {
while ((it != null) && it.hasNext()) {
SftpClient.DirEntry entry = it.next();
String name = entry.getFilename();
if (".".equals(name) && (!dotIgnored)) {
dotIgnored = true;
} else if ("..".equals(name) && (!dotdotIgnored)) {
dotdotIgnored = true;
} else {
return entry;
}
}
return null;
}
@Override
public void remove() {
throw new UnsupportedOperationException("newDirectoryStream(" + p + ") Iterator#remove() N/A");
}
}