/**
* This file is part of muCommander, http://www.mucommander.com
* Copyright (C) 2002-2016 Maxence Bernard
*
* muCommander 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 3 of the License, or
* (at your option) any later version.
*
* muCommander 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 program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.mucommander.commons.file.archive.iso;
import com.mucommander.commons.file.*;
import com.mucommander.commons.file.archive.AbstractROArchiveFile;
import com.mucommander.commons.file.archive.ArchiveEntry;
import com.mucommander.commons.file.archive.ArchiveEntryIterator;
import com.mucommander.commons.io.FilterRandomAccessInputStream;
import com.mucommander.commons.io.RandomAccessInputStream;
import java.io.IOException;
import java.io.InputStream;
/**
* IsoArchiveFile provides read-only access to archives in the ISO and NRG formats.
*
* @author Maxence Bernard
* @see com.mucommander.commons.file.archive.iso.IsoFormatProvider
*/
public class IsoArchiveFile extends AbstractROArchiveFile {
public IsoArchiveFile(AbstractFile file) {
super(file);
}
//////////////////////////////////////////
// AbstractROArchiveFile implementation //
//////////////////////////////////////////
@Override
public ArchiveEntryIterator getEntryIterator() throws IOException, UnsupportedFileOperationException {
RandomAccessInputStream rais = getRandomAccessInputStream();
return new IsoEntryIterator(IsoParser.getEntries(this, rais).iterator(), rais);
}
@Override
public InputStream getEntryInputStream(ArchiveEntry entry, ArchiveEntryIterator entryIterator) throws IOException, UnsupportedFileOperationException {
// Cast the entry before creating the stream, in case it fails
IsoArchiveEntry isoEntry = (IsoArchiveEntry) entry;
RandomAccessInputStream rais;
// If a IsoEntryIterator is specified, reuse the iterator's stream
if (entryIterator != null && entryIterator instanceof IsoEntryIterator) {
// Override close() as a no-op so that the stream is re-used from one entry to another -- the stream will
// be closed when the iterator is closed.
rais = new FilterRandomAccessInputStream(((IsoEntryIterator) entryIterator).getRandomAccessInputStream()) {
@Override
public void close() throws IOException {
// No-op
}
};
} else {
rais = getRandomAccessInputStream();
}
return new IsoEntryInputStream(rais, isoEntry);
}
}