/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package jdk.nio.zipfs;
import java.io.IOException;
import java.nio.file.ClosedDirectoryStreamException;
import java.nio.file.DirectoryIteratorException;
import java.nio.file.DirectoryStream;
import java.nio.file.NotDirectoryException;
import java.nio.file.Path;
import java.util.Iterator;
import java.util.NoSuchElementException;
/**
*
* @author Xueming Shen, Rajendra Gutupalli, Jaya Hangal
*/
class ZipDirectoryStream implements DirectoryStream<Path> {
private final ZipFileSystem zipfs;
private final ZipPath dir;
private final DirectoryStream.Filter<? super Path> filter;
private volatile boolean isClosed;
private volatile Iterator<Path> itr;
ZipDirectoryStream(ZipPath dir,
DirectoryStream.Filter<? super java.nio.file.Path> filter)
throws IOException
{
this.zipfs = dir.getFileSystem();
this.dir = dir;
this.filter = filter;
// sanity check
if (!zipfs.isDirectory(dir.getResolvedPath()))
throw new NotDirectoryException(dir.toString());
}
@Override
public synchronized Iterator<Path> iterator() {
if (isClosed)
throw new ClosedDirectoryStreamException();
if (itr != null)
throw new IllegalStateException("Iterator has already been returned");
try {
itr = zipfs.iteratorOf(dir, filter);
} catch (IOException e) {
throw new DirectoryIteratorException(e);
}
return new Iterator<Path>() {
@Override
public boolean hasNext() {
if (isClosed)
return false;
return itr.hasNext();
}
@Override
public synchronized Path next() {
if (isClosed)
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