/*
* #%L
* gitools-core
* %%
* Copyright (C) 2013 Universitat Pompeu Fabra - Biomedical Genomics group
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program. If not, see
* <http://www.gnu.org/licenses/gpl-3.0.html>.
* #L%
*/
package org.gitools.persistence.locators.filters.gz;
import edu.upf.bg.mtabix.compress.BlockCompressedInputStream;
import edu.upf.bg.mtabix.compress.BlockCompressedOutputStream;
import org.gitools.api.analysis.IProgressMonitor;
import org.gitools.api.resource.IResourceFilter;
import org.gitools.api.resource.IResourceLocator;
import org.gitools.persistence.locators.filters.FilterResourceLocator;
import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.zip.GZIPInputStream;
public class GzResourceLocatorAdaptor extends FilterResourceLocator {
public GzResourceLocatorAdaptor(IResourceFilter filter, IResourceLocator resourceLocator) {
super(filter, resourceLocator);
}
@Override
public boolean isContainer() {
return false;
}
@Override
public InputStream openInputStream(IProgressMonitor progressMonitor) throws IOException {
InputStream in = getParentLocator().openInputStream(progressMonitor);
if (!in.markSupported()) {
in = new BufferedInputStream(in);
}
if (BlockCompressedInputStream.isValidFile(in)) {
return new BlockCompressedInputStream(in);
} else {
return new GZIPInputStream(in);
}
}
@Override
public OutputStream openOutputStream(IProgressMonitor monitor) throws IOException {
return new BlockCompressedOutputStream(getParentLocator().openOutputStream(monitor), null);
}
}