001/* FileImageOutputStream.java --
002   Copyright (C) 2004  Free Software Foundation, Inc.
003
004This file is part of GNU Classpath.
005
006GNU Classpath is free software; you can redistribute it and/or modify
007it under the terms of the GNU General Public License as published by
008the Free Software Foundation; either version 2, or (at your option)
009any later version.
010
011GNU Classpath is distributed in the hope that it will be useful, but
012WITHOUT ANY WARRANTY; without even the implied warranty of
013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014General Public License for more details.
015
016You should have received a copy of the GNU General Public License
017along with GNU Classpath; see the file COPYING.  If not, write to the
018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
01902110-1301 USA.
020
021Linking this library statically or dynamically with other modules is
022making a combined work based on this library.  Thus, the terms and
023conditions of the GNU General Public License cover the whole
024combination.
025
026As a special exception, the copyright holders of this library give you
027permission to link this library with independent modules to produce an
028executable, regardless of the license terms of these independent
029modules, and to copy and distribute the resulting executable under
030terms of your choice, provided that you also meet, for each linked
031independent module, the terms and conditions of the license of that
032module.  An independent module is a module which is not derived from
033or based on this library.  If you modify this library, you may extend
034this exception to your version of the library, but you are not
035obligated to do so.  If you do not wish to do so, delete this
036exception statement from your version. */
037
038
039package javax.imageio.stream;
040
041import java.io.File;
042import java.io.FileNotFoundException;
043import java.io.IOException;
044import java.io.RandomAccessFile;
045
046/**
047 * @author Michael Koch (konqueror@gmx.de)
048 */
049public class FileImageOutputStream extends ImageOutputStreamImpl
050{
051  private RandomAccessFile file;
052
053  public FileImageOutputStream(File file)
054    throws FileNotFoundException, IOException
055  {
056    if (file == null)
057      throw new IllegalArgumentException("file may not be null");
058
059    // Do security check.
060    file.canRead();
061
062    this.file = new RandomAccessFile(file, "r");
063  }
064
065  public FileImageOutputStream(RandomAccessFile file)
066  {
067    if (file == null)
068      throw new IllegalArgumentException("file may not be null");
069
070    this.file = file;
071  }
072
073  public void close()
074    throws IOException
075  {
076    file.close();
077  }
078
079  public long length()
080  {
081    try
082      {
083        return file.length();
084      }
085    catch (IOException e)
086      {
087        return -1L;
088      }
089  }
090
091  public int read()
092    throws IOException
093  {
094    checkClosed();
095
096    setBitOffset(0);
097    return file.read();
098  }
099
100  public int read(byte[] data, int offset, int len)
101    throws IOException
102  {
103    checkClosed();
104
105    setBitOffset(0);
106    return file.read(data, offset, len);
107  }
108
109  public void seek(long position)
110    throws IOException
111  {
112    super.seek(position);
113    file.seek(position);
114  }
115
116  public void write(byte[] data, int offset, int len)
117    throws IOException
118  {
119    checkClosed();
120
121    flushBits();
122    file.write(data, offset, len);
123  }
124
125  public void write(int value)
126    throws IOException
127  {
128    checkClosed();
129
130    // FIXME: Flush pending bits.
131    file.write(value);
132  }
133}