MultiMemberGZIPOutputStream.java

package org.prevayler.foundation.gzip;
import java.io.IOException;
import java.io.OutputStream;
import java.util.zip.GZIPOutputStream;

public class MultiMemberGZIPOutputStream extends OutputStream {
  private OutputStream _stream;
  private GZIPOutputStream _gzip;
  public MultiMemberGZIPOutputStream(  OutputStream stream){
    _stream=new NonCloseableOutputStream(stream);
    _gzip=null;
  }
  public void write(  int b) throws IOException {
    write(new byte[]{(byte)b});
  }
  public void write(  byte b[]) throws IOException {
    write(b,0,b.length);
  }
  public void write(  byte b[],  int off,  int len) throws IOException {
    if (_gzip == null) {
      _gzip=new GZIPOutputStream(_stream);
    }
    _gzip.write(b,off,len);
  }
  public void flush() throws IOException {
    if (_gzip != null) {
      _gzip.close();
      _gzip=null;
    }
    _stream.flush();
  }
  public void close() throws IOException {
    throw new UnsupportedOperationException();
  }
}