/*
* 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 com.github.junrar.vfs2.provider.rar;
import java.io.InputStream;
import java.util.HashSet;
import org.apache.commons.vfs2.FileName;
import org.apache.commons.vfs2.FileObject;
import org.apache.commons.vfs2.FileSystemException;
import org.apache.commons.vfs2.FileType;
import org.apache.commons.vfs2.provider.AbstractFileName;
import org.apache.commons.vfs2.provider.AbstractFileObject;
import com.github.junrar.Archive;
import com.github.junrar.rarfile.FileHeader;
/**
* A file in a RAR file system.
*
* @author <a href="http://www.rogiel.com">Rogiel</a>
*/
public class RARFileObject extends AbstractFileObject implements FileObject {
/**
* The TFile.
*/
protected Archive archive;
protected FileHeader header;
@SuppressWarnings("unused")
private final RARFileSystem fs;
private final HashSet<String> children = new HashSet<String>();
protected RARFileObject(AbstractFileName name, Archive archive,
FileHeader header, RARFileSystem fs) throws FileSystemException {
super(name, fs);
this.fs = fs;
this.archive = archive;
this.header = header;
archive.getMainHeader().isFirstVolume();
}
@Override
public boolean doIsWriteable() throws FileSystemException {
return false;
}
@Override
protected FileType doGetType() {
if (header == null || header.isDirectory()) {
return FileType.FOLDER;
} else {
return FileType.FILE;
}
}
@Override
protected String[] doListChildren() {
try {
if (!getType().hasChildren()) {
return null;
}
} catch (FileSystemException e) {
// should not happen as the type has already been cached.
throw new RuntimeException(e);
}
return children.toArray(new String[children.size()]);
}
@Override
protected long doGetContentSize() {
return header.getFullUnpackSize();
}
@Override
protected long doGetLastModifiedTime() throws Exception {
return header.getMTime().getTime();
}
@Override
protected InputStream doGetInputStream() throws Exception {
if (!getType().hasContent()) {
throw new FileSystemException("vfs.provider/read-not-file.error",
getName());
}
return archive.getInputStream(header);
}
/**
* Attaches a child.
*
* @param childName
* The name of the child.
*/
public void attachChild(FileName childName) {
children.add(childName.getBaseName());
}
/**
* @param header
*/
public void setHeader(FileHeader header) {
this.header = header;
}
}