package io.scal.secureshareui.soundcloud;
import timber.log.Timber;
import org.apache.http.HttpEntity;
import org.apache.http.entity.HttpEntityWrapper;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
abstract class DecompressingEntity extends HttpEntityWrapper {
/**
* Default buffer size.
*/
private static final int BUFFER_SIZE = 1024 * 2;
/**
* {@link #getContent()} method must return the same {@link InputStream}
* instance when DecompressingEntity is wrapping a streaming entity.
*/
private InputStream content;
/**
* Creates a new {@link DecompressingEntity}.
*
* @param wrapped the non-null {@link HttpEntity} to be wrapped
*/
public DecompressingEntity(final HttpEntity wrapped) {
super(wrapped);
}
abstract InputStream decorate(final InputStream wrapped) throws IOException;
private InputStream getDecompressingStream() throws IOException {
final InputStream in = wrappedEntity.getContent();
try {
return decorate(in);
} catch (final IOException ex) {
in.close();
throw ex;
}
}
/**
* {@inheritDoc}
*/
@Override
public InputStream getContent() throws IOException {
if (wrappedEntity.isStreaming()) {
if (content == null) {
content = getDecompressingStream();
}
return content;
} else {
return getDecompressingStream();
}
}
/**
* {@inheritDoc}
*/
@Override
public void writeTo(final OutputStream outstream) throws IOException {
final InputStream instream = getContent();
try {
final byte[] buffer = new byte[BUFFER_SIZE];
int l;
while ((l = instream.read(buffer)) != -1) {
outstream.write(buffer, 0, l);
}
} finally {
instream.close();
}
}
}