package org.jboss.netty.channel;
import java.io.IOException;
import java.nio.channels.FileChannel;
import java.nio.channels.WritableByteChannel;
import android.util.Log;
public class DefaultFileRegion implements FileRegion {
private final FileChannel file;
private final long position;
private final long count;
private final boolean releaseAfterTransfer;
public DefaultFileRegion(FileChannel file, long position, long count) {
this(file, position, count, false);
}
public DefaultFileRegion(FileChannel file, long position, long count, boolean releaseAfterTransfer) {
this.file = file;
this.position = position;
this.count = count;
this.releaseAfterTransfer = releaseAfterTransfer;
}
public long getPosition() {
return position;
}
public long getCount() {
return count;
}
public boolean releaseAfterTransfer() {
return releaseAfterTransfer;
}
public long transferTo(WritableByteChannel target, long position) throws IOException {
long count = this.count - position;
if (count < 0 || position < 0) {
throw new IllegalArgumentException(
"position out of range: " + position +
" (expected: 0 - " + (this.count - 1) + ")");
}
if (count == 0) {
return 0L;
}
return file.transferTo(this.position + position, count, target);
}
public void releaseExternalResources() {
try {
file.close();
} catch (IOException e) {
Log.d("","Failed to close a file."+ e);
}
}
}