Source for javax.imageio.stream.FileCacheImageOutputStream

   1: /* FileCacheImageOutputStream.java --
   2:    Copyright (C) 2004  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: 
  39: package javax.imageio.stream;
  40: 
  41: import gnu.classpath.NotImplementedException;
  42: 
  43: import java.io.File;
  44: import java.io.IOException;
  45: import java.io.OutputStream;
  46: 
  47: /**
  48:  * @author Michael Koch (konqueror@gmx.de)
  49:  */
  50: public class FileCacheImageOutputStream extends ImageOutputStreamImpl
  51: {
  52:   private OutputStream stream;
  53:   private File cacheDir;
  54:   
  55:   public FileCacheImageOutputStream(OutputStream stream, File cacheDir)
  56:     throws IOException
  57:   {
  58:     super();
  59:     this.stream = stream;
  60:     // FIXME: We do not support caching yet.
  61:     this.cacheDir = cacheDir;
  62:   }
  63: 
  64:   public void close()
  65:     throws IOException
  66:   {
  67:     if (stream != null)
  68:       {
  69:     stream.close();
  70:     stream = null;
  71:       }
  72:   }
  73: 
  74:   private void checkStreamClosed()
  75:     throws IOException
  76:   {
  77:     if (stream == null)
  78:       throw new IOException("stream closed");
  79:   }
  80: 
  81:   public boolean isCached()
  82:   {
  83:     return true;
  84:   }
  85: 
  86:   public boolean isCachedFile()
  87:   {
  88:     return true;
  89:   }
  90:   
  91:   public boolean isCachedMemory()
  92:   {
  93:     return false;
  94:   }
  95:   
  96:   public int read()
  97:     throws IOException, NotImplementedException
  98:   {
  99:     // FIXME: Implement me.
 100:     throw new Error("not implemented");
 101:   }
 102: 
 103:   public int read(byte[] data, int offset, int len)
 104:     throws IOException, NotImplementedException
 105:   {
 106:     // FIXME: Implement me.
 107:     throw new Error("not implemented");
 108:   }
 109: 
 110:   public void write(byte[] data, int offset, int len)
 111:     throws IOException
 112:   {
 113:     checkStreamClosed();
 114:     // FIXME: Flush pending bits.
 115:     stream.write(data, offset, len);
 116:   }
 117: 
 118:   public void write(int value)
 119:     throws IOException
 120:   {
 121:     checkStreamClosed();
 122:     // FIXME: Flush pending bits.
 123:     stream.write(value);
 124:   }
 125: }