com.caucho.server.session.DebugInputStream Maven / Gradle / Ivy

Go to download
/*
 * Copyright (c) 1998-2018 Caucho Technology -- all rights reserved
 *
 * This file is part of Resin(R) Open Source
 *
 * Each copy or derived work must preserve the copyright notice and this
 * notice unmodified.
 *
 * Resin Open Source is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Resin Open Source is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
 * of NON-INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Resin Open Source; if not, write to the
 *
 *   Free Software Foundation, Inc.
 *   59 Temple Place, Suite 330
 *   Boston, MA 02111-1307  USA
 *
 * @author Scott Ferguson
 */

package com.caucho.server.session;

import java.io.IOException;
import java.io.InputStream;

/**
 * Serializer for session data
 */
public class DebugInputStream extends InputStream
{
  private InputStream _is;
  private int _offset;

  public DebugInputStream(InputStream is)
  {
    _is = is;
    System.out.println("DIS: " + is);
    System.out.print("{{{");
  }
  
  public int read()
    throws IOException
  {
    int ch = _is.read();
    
    if (ch < 0) {
      System.out.println("}}}");
    }
    else {
      System.out.print(Integer.toHexString((ch >> 4) & 0xf)); 
      System.out.print(Integer.toHexString((ch) & 0xf)); 

      _offset++;
      
      if (_offset % 32 == 0) {
        System.out.println();
      }
      else if (_offset % 8 == 0) {
        System.out.print(" ");
      }
    }
    
    return ch;
  }
}