package fr.in2p3.jsaga.impl.job.instance.stream;
   
   import java.io.*;
   
   /* ***************************************************
   * *** Centre de Calcul de l'IN2P3 - Lyon (France) ***
   * ***             http://cc.in2p3.fr/             ***
   * ***************************************************
   * File:   InputStreamContainer
  * Author: Sylvain Reynaud (sreynaud@in2p3.fr)
  * Date:   23 mai 2008
  * ***************************************************
  * Description:                                      */
  /**
   *
   */
  public class InputStreamContainer extends InputStream {
      private ByteArrayOutputStream m_out;
  
      public InputStreamContainer() {
          m_out = new ByteArrayOutputStream();
      }
  
      public OutputStream getOutputStream() {
          return m_out;
      }
  
      public void finishWriting() throws IOException {
          m_out.close();
          m_buffer = new ByteArrayInputStream(m_out.toByteArray());
      }
  
      /////////////////////////////////// interface InputStream ///////////////////////////////////
  
      public int read() throws IOException {return this.stream().read();}
      public int read(byte[] b) throws IOException {return this.stream().read(b);}
      public int read(byte[] b, int off, int len) throws IOException {return this.stream().read(b, off, len);}
      public long skip(long n) throws IOException {return this.stream().skip(n);}
      public void close() throws IOException {this.stream().close();}
  
      /////////////////////////////////////// private method ///////////////////////////////////////
  
      private ByteArrayInputStream m_buffer;
      private InputStream stream() throws IOException {
          if (m_buffer != null) {
              return m_buffer;
          } else {
              return new ByteArrayInputStream(new byte[]{});
          }
      }
  }