org.jboss.vfs.spi.RootFileSystem Maven / Gradle / Ivy
/*
* JBoss, Home of Professional Open Source
* Copyright 2009, JBoss Inc., and individual contributors as indicated
* by the @authors tag.
*
* 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.jboss.vfs.spi;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.net.URISyntaxException;
import java.security.CodeSigner;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import org.jboss.vfs.VirtualFile;
/**
* A special FileSystem which supports multiple roots.
*
* This is currently accomplished by requiring that VirtualFile.getPathName()
* produce output that is consumable by java.io.File as a path.
*/
public final class RootFileSystem implements FileSystem {
public static final RootFileSystem ROOT_INSTANCE = new RootFileSystem();
private RootFileSystem() {
}
/**
* {@inheritDoc}
*/
public InputStream openInputStream(VirtualFile mountPoint, VirtualFile target) throws IOException {
return new FileInputStream(getFile(mountPoint, target));
}
/**
* {@inheritDoc}
*/
public boolean isReadOnly() {
return false;
}
/**
* {@inheritDoc}
*/
public File getFile(VirtualFile mountPoint, VirtualFile target) {
return new File(target.getPathName());
}
/**
* {@inheritDoc}
*/
public boolean delete(VirtualFile mountPoint, VirtualFile target) {
return getFile(mountPoint, target).delete();
}
/**
* {@inheritDoc}
*/
public long getSize(VirtualFile mountPoint, VirtualFile target) {
return getFile(mountPoint, target).length();
}
/**
* {@inheritDoc}
*/
public long getLastModified(VirtualFile mountPoint, VirtualFile target) {
return getFile(mountPoint, target).lastModified();
}
/**
* {@inheritDoc}
*/
public boolean exists(VirtualFile mountPoint, VirtualFile target) {
return getFile(mountPoint, target).exists();
}
/**
* {@inheritDoc}
*/
public boolean isFile(final VirtualFile mountPoint, final VirtualFile target) {
return getFile(mountPoint, target).isFile();
}
/**
* {@inheritDoc}
*/
public boolean isDirectory(VirtualFile mountPoint, VirtualFile target) {
return getFile(mountPoint, target).isDirectory();
}
/**
* {@inheritDoc}
*/
public List getDirectoryEntries(VirtualFile mountPoint, VirtualFile target) {
final String[] names = getFile(mountPoint, target).list();
return names == null ? Collections.emptyList() : Arrays.asList(names);
}
/**
* {@inheritDoc}
*/
public CodeSigner[] getCodeSigners(VirtualFile mountPoint, VirtualFile target) {
return null;
}
/**
* {@inheritDoc}
*/
public File getMountSource() {
return null;
}
public URI getRootURI() throws URISyntaxException {
return null;
}
/**
* {@inheritDoc}
*/
public void close() throws IOException {
// no operation - the root FS can't be closed
}
}