Source for gnu.javax.imageio.IIOInputStream

   1: /* GIFStream.java --
   2:    Copyright (C)  2006  Free Software Foundation, Inc.
   3: 
   4: This file is 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, or (at your option)
   9: 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; see the file COPYING.  If not, write to the
  18: Free Software 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
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: package gnu.javax.imageio;
  39: 
  40: import java.io.InputStream;
  41: import java.io.IOException;
  42: import javax.imageio.stream.ImageInputStream;
  43: 
  44: /**
  45:  * Implements InputStream on an ImageInputStream
  46:  * The purpose of this is to avoid IIO dependencies in the various decoders.
  47:  * (which only use read() anyway).
  48:  */
  49: public class IIOInputStream extends InputStream
  50: {
  51:   private ImageInputStream is;
  52: 
  53:   public IIOInputStream( ImageInputStream is )
  54:   {
  55:     this.is = is;
  56:   }
  57: 
  58:   public int available()
  59:   {
  60:     return 0;
  61:   }
  62: 
  63:   public void close() throws IOException
  64:   {
  65:     is.close();
  66:   }
  67: 
  68:   public void mark(int readlimit)
  69:   {
  70:     is.mark();
  71:   }
  72: 
  73:   public boolean markSupported()
  74:   {
  75:     return true;
  76:   }
  77: 
  78:   public int read() throws IOException
  79:   {
  80:     return is.read();
  81:   }
  82: 
  83:   public int read(byte[] b) throws IOException
  84:   {
  85:     return is.read(b);
  86:   }
  87: 
  88:   public int read(byte[] b, int offset, int length) throws IOException
  89:   {
  90:     return is.read(b, offset, length);
  91:   }
  92: 
  93:   public void reset() throws IOException
  94:   {
  95:     is.reset();
  96:   }
  97: 
  98:   public long skip(long n) throws IOException
  99:   {
 100:     return is.skipBytes(n);
 101:   }
 102: }