gt:     int code = in.read();
context: /* CompressedInputStream.java --
     Copyright (C) 2003, 2004  Free Software Foundation, Inc.
  
  This file is part of GNU Classpath.
  
  GNU Classpath 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, or (at your option)
  any later version.
  
  GNU Classpath 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.  See the GNU
  General Public License for more details.
  
  You should have received a copy of the GNU General Public License
  along with GNU Classpath; see the file COPYING.  If not, write to the
  Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  02110-1301 USA.
  
  Linking this library statically or dynamically with other modules is
  making a combined work based on this library.  Thus, the terms and
  conditions of the GNU General Public License cover the whole
  combination.
  
  As a special exception, the copyright holders of this library give you
  permission to link this library with independent modules to produce an
  executable, regardless of the license terms of these independent
  modules, and to copy and distribute the resulting executable under
  terms of your choice, provided that you also meet, for each linked
  independent module, the terms and conditions of the license of that
  module.  An independent module is a module which is not derived from
  or based on this library.  If you modify this library, you may extend
  this exception to your version of the library, but you are not
  obligated to do so.  If you do not wish to do so, delete this
  exception statement from your version. */
  
  
  package gnu.java.net.protocol.ftp;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.net.ProtocolException;
  
  /**
   * A DTP input stream that implements the FTP compressed transfer mode.
   *
   * @author Chris Burdess (dog@gnu.org)
   */
  class CompressedInputStream
    extends DTPInputStream
  {
  
    static final int EOF = 64;
  
    static final int RAW = 0x00;
    static final int COMPRESSED = 0x80;
    static final int FILLER = 0xc0;
  
    int descriptor;
    int max = -1;
    int count = -1;
  
    int state = RAW;              // RAW | STATE | FILLER
    int rep;                      // the compressed byte
    int n = 0;                    // the number of compressed or raw bytes
  
    CompressedInputStream(DTP dtp, InputStream in)
    {
      super(dtp, in);
    }
  
    public int read()
      throws IOException
    {
      if (transferComplete)
        {
          return -1;
        }
      if (count == -1)
        {
          readHeader();
        }
      if (max < 1)
        {
          close();
          return -1;
        }
      if (n > 0 && (state == COMPRESSED || state == FILLER))
        {
          n--;
          return rep;
        }
      int c = in.read();
      if (c == -1)
        {
          close();
        }
      count++;
      if (count >= max)
        {
          count = -1;
          if (descriptor == EOF)
            {
              close();
            }
        }
      if (c == -1)
        {
          return c;
        }
      while (n == 0)              // read code header
        {
          state = (c & 0xc0);
          n = (c & 0x3f);
          c = in.read();
          if (c == -1)
            {
              return -1;
            }
        }
      switch (state)
        {
        case RAW:
          break;
        case COMPRESSED:
        case FILLER:
          rep = c;
          break;
        default:
          throw new ProtocolException("Illegal state: " + state);
        }
      n--;
      return c;
    }
  
    public int read(byte[] buf)
      throws IOException
    {
      return read(buf, 0, buf.length);
    }
  
    public int read(byte[] buf, int off, int len)
      throws IOException
    {
      if (transferComplete)
        {
          return -1;
        }
      if (count == -1)
        {
          readHeader();
        }
      if (max < 1)
        {
          close();
          return -1;
        }
      // TODO improve performance
      for (int i = off; i < len; i++)
        {
          int c = read();
          if (c == -1)
            {
              close();
              return i;
            }
          buf[i] = (byte) c;
        }
      return len;
      /*
         int l = in.read (buf, off, len);
         if (l==-1)
         {
         close ();
         }
         count += l;
         if (count>=max)
         {
         count = -1;
         if (descriptor==EOF)
         {
         close ();
         }
         }
         return l;
       */
    }
  
    /**
     * Reads the block header.
     */
    void readHeader()
      throws IOException
    {
      descriptor = in.read();
      int max_hi = in.read();
      int max_lo = in.read();
      max = (max_hi << 8) | max_lo;
      count = 0;
    }
  
    /**
     * Reads the code header.
     */
    void readCodeHeader()
      throws IOException
    {
  