package crosby.binary.file;
import java.io.IOException;
import java.io.InputStream;
import com.google.protobuf.ByteString;
/**
* A FileBlockPosition that remembers what file this is so that it can simply be
* dereferenced
*/
public class FileBlockReference extends FileBlockPosition {
/**
* Convenience cache for storing the input this reference is contained
* within so that it can be cached
*/
protected InputStream input;
protected FileBlockReference(String type, ByteString indexdata) {
super(type, indexdata);
}
public FileBlock read() throws IOException {
return read(input);
}
static FileBlockPosition newInstance(FileBlockBase base, InputStream input,
long offset, int length) {
FileBlockReference out = new FileBlockReference(base.type,
base.indexdata);
out.datasize = length;
out.data_offset = offset;
out.input = input;
return out;
}
}