/*
* Copyright (c) 2010. Stephen Connolly.
* Copyright (C) 2007. Jens Hatlak <hatlak@rbg.informatik.tu-darmstadt.de>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package com.github.stephenc.javaisotools.rockridge.impl;
import java.util.HashMap;
import java.util.Iterator;
import com.github.stephenc.javaisotools.iso9660.ISO9660File;
import com.github.stephenc.javaisotools.iso9660.ISO9660RootDirectory;
import com.github.stephenc.javaisotools.sabre.HandlerException;
import com.github.stephenc.javaisotools.sabre.StreamHandler;
import com.github.stephenc.javaisotools.iso9660.FilenameDataReference;
import com.github.stephenc.javaisotools.iso9660.ISO9660Directory;
import com.github.stephenc.javaisotools.iso9660.LayoutHelper;
public class RockRidgeLayoutHelper extends LayoutHelper {
private ISO9660RootDirectory rripRoot;
private HashMap directoryMapper, fileMapper;
public RockRidgeLayoutHelper(StreamHandler streamHandler, ISO9660RootDirectory isoRoot,
ISO9660RootDirectory rripRoot) {
super(streamHandler, isoRoot, new RockRidgeNamingConventions());
this.rripRoot = rripRoot;
setup(isoRoot);
}
private void setup(ISO9660RootDirectory isoRoot) {
// Lookup tables mapping files and directories between hierarchies
// (ISO 9660 -> Rock Ridge)
int dirCount = isoRoot.deepDirCount() + 1;
directoryMapper = new HashMap(dirCount);
int fileCount = isoRoot.deepFileCount() + 1;
fileMapper = new HashMap(fileCount);
// Root files (root itself does not have to be mapped)
Iterator isoFit = isoRoot.getFiles().iterator();
Iterator rripFit = rripRoot.getFiles().iterator();
while (isoFit.hasNext()) {
ISO9660File isoFile = (ISO9660File) isoFit.next();
ISO9660File rripFile = (ISO9660File) rripFit.next();
fileMapper.put(isoFile, rripFile);
}
// Subdirectories:
// Since rripRoot and isoRoot are just a deep copy of the same
// root at this point, simultaneous iteration can be applied here
Iterator isoIt = isoRoot.unsortedIterator();
Iterator rripIt = rripRoot.unsortedIterator();
while (isoIt.hasNext()) {
ISO9660Directory isoDir = (ISO9660Directory) isoIt.next();
ISO9660Directory rripDir = (ISO9660Directory) rripIt.next();
directoryMapper.put(isoDir.getID(), rripDir);
isoFit = isoDir.getFiles().iterator();
rripFit = rripDir.getFiles().iterator();
while (isoFit.hasNext()) {
ISO9660File isoFile = (ISO9660File) isoFit.next();
ISO9660File rripFile = (ISO9660File) rripFit.next();
fileMapper.put(isoFile.getID(), rripFile);
}
}
}
public FilenameDataReference getFilenameDataReference(ISO9660Directory dir) throws HandlerException {
return new RockRidgeFilenameDataReference(matchDirectory(dir));
}
public FilenameDataReference getFilenameDataReference(ISO9660File file) throws HandlerException {
return new RockRidgeFilenameDataReference(matchFile(file));
}
public FilenameDataReference getFilenameDataReference(String name) throws HandlerException {
return new RockRidgeFilenameDataReference(name);
}
public ISO9660Directory matchDirectory(ISO9660Directory dir) {
if (dir == dir.getRoot()) {
return rripRoot;
}
if (dir == dir.getRoot().getMovedDirectoriesStore()) {
return rripRoot.getMovedDirectoriesStore();
}
ISO9660Directory rripDir = (ISO9660Directory) directoryMapper.get(dir.getID());
if (rripDir != null) {
return rripDir;
}
throw new RuntimeException("No matching directory found for " + dir.getISOPath());
}
public ISO9660File matchFile(ISO9660File file) {
ISO9660File rripFile = (ISO9660File) fileMapper.get(file.getID());
if (rripFile != null) {
return rripFile;
}
throw new RuntimeException("No matching file found for " + file.getISOPath());
}
public byte[] pad(String string, int targetByteLength)
throws HandlerException {
// Unused
return null;
}
}