/*
* Licensed 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.aries.subsystem.core.internal;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.List;
import org.apache.aries.util.filesystem.FileSystem;
import org.apache.aries.util.filesystem.ICloseableDirectory;
import org.apache.aries.util.filesystem.IDirectory;
import org.apache.aries.util.filesystem.IFile;
import org.osgi.framework.Bundle;
import org.osgi.service.subsystem.SubsystemException;
public class BundleDirectory implements IDirectory {
private static class BundleFile implements IFile {
private final BundleDirectory directory;
private final String name;
private final URL url;
public BundleFile(String name, URL url, BundleDirectory directory) {
this.name = name;
this.url = url;
this.directory = directory;
}
@Override
public IDirectory convert() {
return null;
}
@Override
public IDirectory convertNested() {
try {
return FileSystem.getFSRoot(url.openStream());
}
catch (IOException e) {
throw new SubsystemException(e);
}
}
@Override
public long getLastModified() {
return 0;
}
@Override
public String getName() {
if (name.startsWith("/"))
return name.substring(1);
return name;
}
@Override
public IDirectory getParent() {
return directory;
}
@Override
public IDirectory getRoot() {
return directory;
}
@Override
public long getSize() {
return 0;
}
@Override
public boolean isDirectory() {
return false;
}
@Override
public boolean isFile() {
return true;
}
@Override
public InputStream open() throws IOException,
UnsupportedOperationException {
return url.openStream();
}
@Override
public URL toURL() throws MalformedURLException {
return url;
}
}
private final Bundle bundle;
public BundleDirectory(Bundle bundle) {
if (bundle == null)
throw new NullPointerException();
this.bundle = bundle;
}
@Override
public Iterator<IFile> iterator() {
return listAllFiles().iterator();
}
@Override
public IDirectory convert() {
return this;
}
@Override
public IDirectory convertNested() {
return this;
}
@Override
public long getLastModified() {
return 0;
}
@Override
public String getName() {
return "";
}
@Override
public IDirectory getParent() {
return null;
}
@Override
public IDirectory getRoot() {
return this;
}
@Override
public long getSize() {
return 0;
}
@Override
public boolean isDirectory() {
return true;
}
@Override
public boolean isFile() {
return false;
}
@Override
public InputStream open() throws IOException, UnsupportedOperationException {
throw new UnsupportedOperationException();
}
@Override
public URL toURL() throws MalformedURLException {
return bundle.getEntry("/");
}
@Override
public IFile getFile(final String name) {
if (name == null || name.length() == 0)
return null;
if ("/".equals(name))
return this;
URL entry = bundle.getEntry(name);
if (entry == null)
return null;
return new BundleFile(name, entry, this);
}
@Override
public boolean isRoot() {
return true;
}
@Override
public List<IFile> listAllFiles() {
return listFiles(true);
}
@Override
public List<IFile> listFiles() {
return listFiles(false);
}
@Override
public ICloseableDirectory toCloseable() {
return null;
}
private List<IFile> listFiles(boolean recurse) {
Enumeration<URL> entries = bundle.findEntries("/", null, recurse);
if (entries == null)
return Collections.emptyList();
ArrayList<IFile> files = new ArrayList<IFile>();
while (entries.hasMoreElements()) {
URL entry = entries.nextElement();
if (entry.getPath().endsWith("/"))
continue;
files.add(new BundleFile(entry.getPath(), entry, this));
}
files.trimToSize();
return files;
}
}