Source for gnu.classpath.debug.TeeInputStream

   1: /* TeeInputStream.java
   2:    Copyright (C) 2006  Free Software Foundation, Inc.
   3: 
   4: This file is a part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2 of the License, or (at
   9: your option) any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; if not, write to the Free Software
  18: Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under terms
  30: of your choice, provided that you also meet, for each linked independent
  31: module, the terms and conditions of the license of that module.  An
  32: independent module is a module which is not derived from or based on
  33: this library.  If you modify this library, you may extend this exception
  34: to your version of the library, but you are not obligated to do so.  If
  35: you do not wish to do so, delete this exception statement from your
  36: version.  */
  37: 
  38: package gnu.classpath.debug;
  39: 
  40: import java.io.*;
  41: 
  42: /**
  43:  * An input stream that copies all its input to a byte sink.
  44:  *
  45:  * @author Chris Burdess
  46:  */
  47: public class TeeInputStream
  48:   extends InputStream
  49: {
  50: 
  51:   private final InputStream in;
  52:   private final OutputStream out;
  53: 
  54:   /**
  55:    * Constructs a tee input stream.
  56:    * @param in the underlying input stream
  57:    * @param out the output sink
  58:    */
  59:   public TeeInputStream(InputStream in, OutputStream out)
  60:   {
  61:     this.in = in;
  62:     this.out = out;
  63:   }
  64: 
  65:   public int read()
  66:     throws IOException
  67:   {
  68:     int ret = in.read();
  69:     out.write(ret);
  70:     out.flush();
  71:     return ret;
  72:   }
  73: 
  74:   public int read(byte[] b, int off, int len)
  75:     throws IOException
  76:   {
  77:     int ret = in.read(b, off, len);
  78:     if (ret != -1)
  79:       {
  80:         out.write(b, off, ret);
  81:         out.flush();
  82:       }
  83:     return ret;
  84:   }
  85: 
  86:   public void close()
  87:     throws IOException
  88:   {
  89:     in.close();
  90:     out.close();
  91:   }
  92: 
  93:   public final boolean markSupported()
  94:   {
  95:     return false;
  96:   }
  97: 
  98: }