CharViewBufferImpl.java, [...]: New files, not yet to be compiled.

2003-05-12  Michael Koch  <konqueror@gmx.de>

	* gnu/java/nio/CharViewBufferImpl.java,
	gnu/java/nio/DirectByteBufferImpl.java,
	gnu/java/nio/DoubleViewBufferImpl.java,
	gnu/java/nio/FloatViewBufferImpl.java,
	gnu/java/nio/IntViewBufferImpl.java,
	gnu/java/nio/LongViewBufferImpl.java,
	gnu/java/nio/ShortViewBufferImpl.java,
	gnu/java/nio/natDirectByteBufferImpl.cc:
	New files, not yet to be compiled.

From-SVN: r66727

8 files changed, 1414 insertions, 0 deletions

diff --git a/libjava/gnu/java/nio/CharViewBufferImpl.java b/libjava/gnu/java/nio/CharViewBufferImpl.java
new file mode 100644
index 0000000..62c8fdd
--- /dev/null
+++ b/libjava/gnu/java/nio/CharViewBufferImpl.java
@@ -0,0 +1,167 @@
+/* CharViewBufferImpl.java -- 
+   Copyright (C) 2003 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., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 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.nio;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.CharBuffer;
+
+class CharViewBufferImpl extends CharBuffer
+{
+  private boolean readOnly;
+  private int offset;
+  private ByteBuffer bb;
+  private ByteOrder endian;
+  
+  public CharViewBufferImpl (ByteBuffer bb, boolean readOnly)
+  {
+    super (bb.remaining () >> 1, bb.remaining () >> 1, bb.position (), 0);
+    this.bb = bb;
+    this.readOnly = readOnly;
+    // FIXME: What if this is called from CharByteBufferImpl and ByteBuffer has changed its endianess ?
+    this.endian = bb.order ();
+  }
+
+  public CharViewBufferImpl (ByteBuffer bb, int offset, int capacity,
+                               int limit, int position, int mark,
+                               boolean readOnly)
+  {
+    super (limit, limit, offset, position);
+    this.bb = bb;
+    this.readOnly = readOnly;
+    // FIXME: What if this is called from CharViewBufferImpl and ByteBuffer has changed its endianess ?
+    this.endian = bb.order ();
+  }
+
+  public char get ()
+  {
+    char result = bb.getChar ((position () >> 1) + offset);
+    position (position () + 1);
+    return result;
+  }
+
+  public char get (int index)
+  {
+    return bb.getChar ((index >> 1) + offset);
+  }
+
+  public CharBuffer put (char value)
+  {
+    bb.putChar ((position () >> 1) + offset, value);
+    return this;
+  }
+  
+  public CharBuffer put (int index, char value)
+  {
+    bb.putChar ((index >> 1) + offset, value);
+    return this;
+  }
+
+  public CharBuffer compact ()
+  {
+    if (position () > 0)
+      {
+        // Copy all data from position() to limit() to the beginning of the
+        // buffer, set position to end of data and limit to capacity
+        // XXX: This can surely be optimized, for direct and non-direct buffers
+        
+        int count = limit () - position ();
+              
+        for (int i = 0; i < count; i++)
+          {
+            bb.putChar ((i >> 1) + offset,
+                          bb.getChar (((i + position ()) >> 1) + offset));
+          }
+
+        position (count);
+        limit (capacity ());
+      }
+
+    return this;
+  }
+  
+  public CharBuffer duplicate ()
+  {
+    // Create a copy of this object that shares its content
+    // FIXME: mark is not correct
+    return new CharViewBufferImpl (bb, offset, capacity (), limit (),
+                                     position (), -1, isReadOnly ());
+  }
+  
+  public CharBuffer slice ()
+  {
+    // Create a sliced copy of this object that shares its content.
+    return new CharViewBufferImpl (bb, (position () >> 1) + offset,
+                                      remaining (), remaining (), 0, -1,
+                                     isReadOnly ());
+  }
+  
+  public CharSequence subSequence (int start, int end)
+  {
+    if (start < 0
+        || start > length ()
+        || end < start
+        || end > length ())
+      throw new IndexOutOfBoundsException ();
+
+    return new CharViewBufferImpl (bb, array_offset, capacity (), position () + end, position () + start, -1, isReadOnly ());
+  }
+
+  public CharBuffer asReadOnlyBuffer ()
+  {
+    // Create a copy of this object that shares its content and is read-only
+    return new CharViewBufferImpl (bb, (position () >> 1) + offset,
+                                     remaining (), remaining (), 0, -1, true);
+  }
+  
+  public boolean isReadOnly ()
+  {
+    return readOnly;
+  }
+  
+  public boolean isDirect ()
+  {
+    return bb.isDirect ();
+  }
+  
+  public ByteOrder order ()
+  {
+    return ByteOrder.LITTLE_ENDIAN;
+  }
+}
diff --git a/libjava/gnu/java/nio/DirectByteBufferImpl.java b/libjava/gnu/java/nio/DirectByteBufferImpl.java
new file mode 100644
index 0000000..0c08ab4
--- /dev/null
+++ b/libjava/gnu/java/nio/DirectByteBufferImpl.java
@@ -0,0 +1,423 @@
+/* DirectByteBufferImpl.java -- 
+   Copyright (C) 2003 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., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 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.nio;
+
+import java.nio.ByteBuffer;
+import java.nio.CharBuffer;
+import java.nio.DoubleBuffer;
+import java.nio.FloatBuffer;
+import java.nio.IntBuffer;
+import java.nio.LongBuffer;
+import java.nio.ShortBuffer;
+import gnu.gcj.RawData;
+
+public class DirectByteBufferImpl extends ByteBuffer
+{
+  private RawData address;
+  private int offset;
+  private boolean readOnly;
+  
+  public DirectByteBufferImpl (RawData address, int offset, int capacity,
+                               int limit, int position, int mark,
+                               boolean readOnly)
+  {
+    super (capacity, limit, position, mark);
+    this.address = address;
+    this.offset = offset;
+    this.readOnly = readOnly;
+  }
+
+  private static native RawData allocateImpl (int capacity);
+  private static native void freeImpl (RawData address);
+  
+  protected void finalize () throws Throwable
+  {
+    freeImpl (address);
+  }
+  
+  public static ByteBuffer allocateDirect (int capacity)
+  {
+    RawData address = allocateImpl (capacity);
+
+    if (address == 0)
+      throw new InternalError ("Not enough memory to create direct buffer");
+    
+    return new DirectByteBufferImpl (address, 0, capacity, capacity, 0, -1, false);
+  }
+  
+  private native byte getImpl (int index);
+  private native void putImpl (int index, byte value);
+
+  public byte get ()
+  {
+    byte result = getImpl (position () + offset);
+    position (position () + 1);
+    return result;
+  }
+
+  public byte get (int index)
+  {
+    return getImpl (index);
+  }
+
+  public ByteBuffer put (byte value)
+  {
+    putImpl (position (), value);
+    position (position () + 1);
+    return this;
+  }
+  
+  public ByteBuffer put (int index, byte value)
+  {
+    putImpl (index, value);
+    return this;
+  }
+  
+  public ByteBuffer compact ()
+  {
+    // FIXME this can sure be optimized using memcpy()  
+    int copied = 0;
+    
+    while (remaining () > 0)
+      {
+	put (copied, get ());
+	copied++;
+      }
+
+    position (copied);
+    return this;
+  }
+
+  public ByteBuffer duplicate ()
+  {
+    return new DirectByteBufferImpl (
+      address, offset, capacity (), limit (), position (), -1, isReadOnly ());
+  }
+
+  public ByteBuffer slice ()
+  {
+    return new DirectByteBufferImpl (address, position () + offset, remaining (), remaining (), 0, -1, isReadOnly ());
+  }
+
+  public ByteBuffer asReadOnlyBuffer ()
+  {
+    return new DirectByteBufferImpl (
+      address, offset, capacity (), limit (), position (), -1, true);
+  }
+
+  public boolean isReadOnly ()
+  {
+    return readOnly;
+  }
+
+  public boolean isDirect ()
+  {
+    return true;
+  }
+
+  public CharBuffer asCharBuffer ()
+  {
+    return new CharViewBufferImpl (this, position () + offset, remaining (), remaining (), 0, -1, isReadOnly ());
+  }
+  
+  public DoubleBuffer asDoubleBuffer ()
+  {
+    return new DoubleViewBufferImpl (this, position () + offset, remaining (), remaining (), 0, -1, isReadOnly ());
+  }
+  
+  public FloatBuffer asFloatBuffer ()
+  {
+    return new FloatViewBufferImpl (this, position () + offset, remaining (), remaining (), 0, -1, isReadOnly ());
+  }
+  
+  public IntBuffer asIntBuffer ()
+  {
+    return new IntViewBufferImpl (this, position () + offset, remaining (), remaining (), 0, -1, isReadOnly ());
+  }
+  
+  public LongBuffer asLongBuffer ()
+  {
+    return new LongViewBufferImpl (this, position () + offset, remaining (), remaining (), 0, -1, isReadOnly ());
+  }
+  
+  public ShortBuffer asShortBuffer ()
+  {
+    return new ShortViewBufferImpl (this, position () + offset, remaining (), remaining (), 0, -1, isReadOnly ());
+  }
+  
+  final public char getChar ()
+  {
+    // FIXME: this handles big endian only
+    return (char) (((get () & 0xff) << 8) + (get () & 0xff));
+  }
+  
+  final public ByteBuffer putChar (char value)
+  {
+    // FIXME: this handles big endian only
+    put ((byte) ((((int) value) & 0xff00) >> 8));
+    put ((byte) (((int) value) & 0x00ff));
+    return this;
+  }
+  
+  final public char getChar (int index)
+  {
+    // FIXME: this handles big endian only
+    return (char) (((get (index) & 0xff) << 8) + (get (index + 1) & 0xff));
+  }
+  
+  final public ByteBuffer putChar (int index, char value)
+  {
+    // FIXME: this handles big endian only
+    put (index, (byte) ((((int) value) & 0xff00) >> 8));
+    put (index + 1, (byte) (((int) value) & 0x00ff));
+    return this;
+  }
+
+  final public short getShort ()
+  {
+    // FIXME: this handles big endian only
+    return (short) (((get () & 0xff) << 8) + (get () & 0xff));
+  }
+  
+  final public ByteBuffer putShort (short value)
+  {
+    // FIXME: this handles big endian only
+    put ((byte) ((((int) value) & 0xff00) >> 8));
+    put ((byte) (((int) value) & 0x00ff));
+    return this;
+  }
+  
+  final public short getShort (int index)
+  {
+    // FIXME: this handles big endian only
+    return (short) (((get (index) & 0xff) << 8) + (get (index + 1) & 0xff));
+  }
+  
+  final public ByteBuffer putShort (int index, short value)
+  {
+    // FIXME: this handles big endian only
+    put (index, (byte) ((((int) value) & 0xff00) >> 8));
+    put (index + 1, (byte) (((int) value) & 0x00ff));
+    return this;
+  }
+
+  final public int getInt ()
+  {
+    // FIXME: this handles big endian only
+    return (int) (((get () & 0xff) << 24)
+                  + (get () & 0xff) << 16
+                  + (get () & 0xff) << 8
+                  + (get () & 0xff));
+  }
+  
+  final public ByteBuffer putInt (int value)
+  {
+    // FIXME: this handles big endian only
+    put ((byte) ((((int) value) & 0xff000000) >> 24));
+    put ((byte) ((((int) value) & 0x00ff0000) >> 16));
+    put ((byte) ((((int) value) & 0x0000ff00) >> 8));
+    put ((byte) (((int) value) & 0x000000ff));
+    return this;
+  }
+  
+  final public int getInt (int index)
+  {
+    // FIXME: this handles big endian only
+    return (int) (((get (index) & 0xff) << 24)
+                  + (get (index + 1) & 0xff) << 16
+                  + (get (index + 2) & 0xff) << 8
+                  + (get (index + 3) & 0xff));
+  }
+  
+  final public ByteBuffer putInt (int index, int value)
+  {
+    // FIXME: this handles big endian only
+    put (index, (byte) ((((int) value) & 0xff000000) >> 24));
+    put (index + 1, (byte) ((((int) value) & 0x00ff0000) >> 16));
+    put (index + 2, (byte) ((((int) value) & 0x0000ff00) >> 8));
+    put (index + 3, (byte) (((int) value) & 0x000000ff));
+    return this;
+  }
+
+  final public long getLong ()
+  {
+    // FIXME: this handles big endian only
+    return (long) (((get () & 0xff) << 56)
+                   + (get () & 0xff) << 48
+                   + (get () & 0xff) << 40
+                   + (get () & 0xff) << 32
+                   + (get () & 0xff) << 24
+                   + (get () & 0xff) << 16
+                   + (get () & 0xff) << 8
+                   + (get () & 0xff));
+  }
+  
+  final public ByteBuffer putLong (long value)
+  {
+    // FIXME: this handles big endian only
+    put ((byte) ((((int) value) & 0xff00000000000000) >> 56));
+    put ((byte) ((((int) value) & 0x00ff000000000000) >> 48));
+    put ((byte) ((((int) value) & 0x0000ff0000000000) >> 40));
+    put ((byte) ((((int) value) & 0x000000ff00000000) >> 32));
+    put ((byte) ((((int) value) & 0x00000000ff000000) >> 24));
+    put ((byte) ((((int) value) & 0x0000000000ff0000) >> 16));
+    put ((byte) ((((int) value) & 0x000000000000ff00) >> 8));
+    put ((byte) (((int) value) & 0x00000000000000ff));
+    return this;
+  }
+  
+  final public long getLong (int index)
+  {
+    // FIXME: this handles big endian only
+    return (long) (((get (index) & 0xff) << 56)
+                   + (get (index + 1) & 0xff) << 48
+                   + (get (index + 2) & 0xff) << 40
+                   + (get (index + 3) & 0xff) << 32
+                   + (get (index + 4) & 0xff) << 24
+                   + (get (index + 5) & 0xff) << 16
+                   + (get (index + 6) & 0xff) << 8
+                   + (get (index + 7) & 0xff));
+  }
+  
+  final public ByteBuffer putLong (int index, long value)
+  {
+    // FIXME: this handles big endian only
+    put (index, (byte) ((((int) value) & 0xff00000000000000) >> 56));
+    put (index + 1, (byte) ((((int) value) & 0x00ff000000000000) >> 48));
+    put (index + 2, (byte) ((((int) value) & 0x0000ff0000000000) >> 40));
+    put (index + 3, (byte) ((((int) value) & 0x000000ff00000000) >> 32));
+    put (index + 4, (byte) ((((int) value) & 0x00000000ff000000) >> 24));
+    put (index + 5, (byte) ((((int) value) & 0x0000000000ff0000) >> 16));
+    put (index + 6, (byte) ((((int) value) & 0x000000000000ff00) >> 8));
+    put (index + 7, (byte) (((int) value) & 0x00000000000000ff));
+    return this;
+  }
+
+  final public float getFloat ()
+  {
+    // FIXME: this handles big endian only
+    return (float) (((get () & 0xff) << 24)
+                    + (get () & 0xff) << 16
+                    + (get () & 0xff) << 8
+                    + (get () & 0xff));
+  }
+  
+  final public ByteBuffer putFloat (float value)
+  {
+    // FIXME: this handles big endian only
+    put ((byte) ((((int) value) & 0xff000000) >> 24));
+    put ((byte) ((((int) value) & 0x00ff0000) >> 16));
+    put ((byte) ((((int) value) & 0x0000ff00) >> 8));
+    put ((byte) (((int) value) & 0x000000ff));
+    return this;
+  }
+  
+  final public float getFloat (int index)
+  {
+    // FIXME: this handles big endian only
+    return (float) (((get (index) & 0xff) << 24)
+                    + (get (index + 1) & 0xff) << 16
+                    + (get (index + 2) & 0xff) << 8
+                    + (get (index + 3) & 0xff));
+  }
+
+  final public ByteBuffer putFloat (int index, float value)
+  {
+    // FIXME: this handles big endian only
+    put (index, (byte) ((((int) value) & 0xff000000) >> 24));
+    put (index + 1, (byte) ((((int) value) & 0x00ff0000) >> 16));
+    put (index + 2, (byte) ((((int) value) & 0x0000ff00) >> 8));
+    put (index + 3, (byte) (((int) value) & 0x000000ff));
+    return this;
+  }
+
+  final public double getDouble ()
+  {
+    // FIXME: this handles big endian only
+    return (double) (((get () & 0xff) << 56)
+                     + (get () & 0xff) << 48
+                     + (get () & 0xff) << 40
+                     + (get () & 0xff) << 32
+                     + (get () & 0xff) << 24
+                     + (get () & 0xff) << 16
+                     + (get () & 0xff) << 8
+                     + (get () & 0xff));
+  }
+
+  final public ByteBuffer putDouble (double value)
+  {
+    // FIXME: this handles big endian only
+    put ((byte) ((((int) value) & 0xff00000000000000) >> 56));
+    put ((byte) ((((int) value) & 0x00ff000000000000) >> 48));
+    put ((byte) ((((int) value) & 0x0000ff0000000000) >> 40));
+    put ((byte) ((((int) value) & 0x000000ff00000000) >> 32));
+    put ((byte) ((((int) value) & 0x00000000ff000000) >> 24));
+    put ((byte) ((((int) value) & 0x0000000000ff0000) >> 16));
+    put ((byte) ((((int) value) & 0x000000000000ff00) >> 8));
+    put ((byte) (((int) value) & 0x00000000000000ff));
+    return this;
+  }
+  
+  final public double getDouble (int index)
+  {
+    // FIXME: this handles big endian only
+    return (double) (((get (index) & 0xff) << 56)
+                     + (get (index + 1) & 0xff) << 48
+                     + (get (index + 2) & 0xff) << 40
+                     + (get (index + 3) & 0xff) << 32
+                     + (get (index + 4) & 0xff) << 24
+                     + (get (index + 5) & 0xff) << 16
+                     + (get (index + 6) & 0xff) << 8
+                     + (get (index + 7) & 0xff));
+  }
+  
+  final public ByteBuffer putDouble (int index, double value)
+  {
+    // FIXME: this handles big endian only
+    put (index, (byte) ((((int) value) & 0xff00000000000000) >> 56));
+    put (index + 1, (byte) ((((int) value) & 0x00ff000000000000) >> 48));
+    put (index + 2, (byte) ((((int) value) & 0x0000ff0000000000) >> 40));
+    put (index + 3, (byte) ((((int) value) & 0x000000ff00000000) >> 32));
+    put (index + 4, (byte) ((((int) value) & 0x00000000ff000000) >> 24));
+    put (index + 5, (byte) ((((int) value) & 0x0000000000ff0000) >> 16));
+    put (index + 6, (byte) ((((int) value) & 0x000000000000ff00) >> 8));
+    put (index + 7, (byte) (((int) value) & 0x00000000000000ff));
+    return this;
+  }
+}
diff --git a/libjava/gnu/java/nio/DoubleViewBufferImpl.java b/libjava/gnu/java/nio/DoubleViewBufferImpl.java
new file mode 100644
index 0000000..d34e886
--- /dev/null
+++ b/libjava/gnu/java/nio/DoubleViewBufferImpl.java
@@ -0,0 +1,156 @@
+/* DoubleViewBufferImpl.java -- 
+   Copyright (C) 2003 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., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 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.nio;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.DoubleBuffer;
+
+class DoubleViewBufferImpl extends DoubleBuffer
+{
+  private boolean readOnly;
+  private int offset;
+  private ByteBuffer bb;
+  private ByteOrder endian;
+  
+  public DoubleViewBufferImpl (ByteBuffer bb, boolean readOnly)
+  {
+    super (bb.remaining () >> 3, bb.remaining () >> 3, bb.position (), 0);
+    this.bb = bb;
+    this.readOnly = readOnly;
+    // FIXME: What if this is called from DoubleByteBufferImpl and ByteBuffer has changed its endianess ?
+    this.endian = bb.order ();
+  }
+
+  public DoubleViewBufferImpl (ByteBuffer bb, int offset, int capacity,
+                               int limit, int position, int mark,
+                               boolean readOnly)
+  {
+    super (limit, limit, offset, position);
+    this.bb = bb;
+    this.readOnly = readOnly;
+    // FIXME: What if this is called from DoubleViewBufferImpl and ByteBuffer has changed its endianess ?
+    this.endian = bb.order ();
+  }
+
+  public double get ()
+  {
+    double result = bb.getDouble ((position () >> 3) + offset);
+    position (position () + 1);
+    return result;
+  }
+
+  public double get (int index)
+  {
+    return bb.getDouble ((index >> 3) + offset);
+  }
+
+  public DoubleBuffer put (double value)
+  {
+    bb.putDouble ((position () >> 3) + offset, value);
+    return this;
+  }
+  
+  public DoubleBuffer put (int index, double value)
+  {
+    bb.putDouble ((index >> 3) + offset, value);
+    return this;
+  }
+
+  public DoubleBuffer compact ()
+  {
+    if (position () > 0)
+      {
+        // Copy all data from position() to limit() to the beginning of the
+        // buffer, set position to end of data and limit to capacity
+        // XXX: This can surely be optimized, for direct and non-direct buffers
+        
+        int count = limit () - position ();
+              
+        for (int i = 0; i < count; i++)
+          {
+            bb.putDouble ((i >> 3) + offset,
+                          bb.getDouble (((i + position ()) >> 3) + offset));
+          }
+
+        position (count);
+        limit (capacity ());
+      }
+
+    return this;
+  }
+  
+  public DoubleBuffer duplicate ()
+  {
+    // Create a copy of this object that shares its content
+    // FIXME: mark is not correct
+    return new DoubleViewBufferImpl (bb, offset, capacity (), limit (),
+                                     position (), -1, isReadOnly ());
+  }
+  
+  public DoubleBuffer slice ()
+  {
+    // Create a sliced copy of this object that shares its content.
+    return new DoubleViewBufferImpl (bb, (position () >> 3) + offset,
+                                      remaining (), remaining (), 0, -1,
+                                     isReadOnly ());
+  }
+  
+  public DoubleBuffer asReadOnlyBuffer ()
+  {
+    // Create a copy of this object that shares its content and is read-only
+    return new DoubleViewBufferImpl (bb, (position () >> 3) + offset,
+                                     remaining (), remaining (), 0, -1, true);
+  }
+  
+  public boolean isReadOnly ()
+  {
+    return readOnly;
+  }
+  
+  public boolean isDirect ()
+  {
+    return bb.isDirect ();
+  }
+  
+  public ByteOrder order ()
+  {
+    return ByteOrder.LITTLE_ENDIAN;
+  }
+}
diff --git a/libjava/gnu/java/nio/FloatViewBufferImpl.java b/libjava/gnu/java/nio/FloatViewBufferImpl.java
new file mode 100644
index 0000000..78299f9
--- /dev/null
+++ b/libjava/gnu/java/nio/FloatViewBufferImpl.java
@@ -0,0 +1,156 @@
+/* FloatViewBufferImpl.java -- 
+   Copyright (C) 2003 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., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 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.nio;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.FloatBuffer;
+
+class FloatViewBufferImpl extends FloatBuffer
+{
+  private boolean readOnly;
+  private int offset;
+  private ByteBuffer bb;
+  private ByteOrder endian;
+  
+  public FloatViewBufferImpl (ByteBuffer bb, boolean readOnly)
+  {
+    super (bb.remaining () >> 2, bb.remaining () >> 2, bb.position (), 0);
+    this.bb = bb;
+    this.readOnly = readOnly;
+    // FIXME: What if this is called from FloatByteBufferImpl and ByteBuffer has changed its endianess ?
+    this.endian = bb.order ();
+  }
+
+  public FloatViewBufferImpl (ByteBuffer bb, int offset, int capacity,
+                               int limit, int position, int mark,
+                               boolean readOnly)
+  {
+    super (limit, limit, offset, position);
+    this.bb = bb;
+    this.readOnly = readOnly;
+    // FIXME: What if this is called from FloatViewBufferImpl and ByteBuffer has changed its endianess ?
+    this.endian = bb.order ();
+  }
+
+  public float get ()
+  {
+    float result = bb.getFloat ((position () >> 2) + offset);
+    position (position () + 1);
+    return result;
+  }
+
+  public float get (int index)
+  {
+    return bb.getFloat ((index >> 2) + offset);
+  }
+
+  public FloatBuffer put (float value)
+  {
+    bb.putFloat ((position () >> 2) + offset, value);
+    return this;
+  }
+  
+  public FloatBuffer put (int index, float value)
+  {
+    bb.putFloat ((index >> 2) + offset, value);
+    return this;
+  }
+
+  public FloatBuffer compact ()
+  {
+    if (position () > 0)
+      {
+        // Copy all data from position() to limit() to the beginning of the
+        // buffer, set position to end of data and limit to capacity
+        // XXX: This can surely be optimized, for direct and non-direct buffers
+        
+        int count = limit () - position ();
+              
+        for (int i = 0; i < count; i++)
+          {
+            bb.putFloat ((i >> 2) + offset,
+                          bb.getFloat (((i + position ()) >> 2) + offset));
+          }
+
+        position (count);
+        limit (capacity ());
+      }
+
+    return this;
+  }
+  
+  public FloatBuffer duplicate ()
+  {
+    // Create a copy of this object that shares its content
+    // FIXME: mark is not correct
+    return new FloatViewBufferImpl (bb, offset, capacity (), limit (),
+                                     position (), -1, isReadOnly ());
+  }
+  
+  public FloatBuffer slice ()
+  {
+    // Create a sliced copy of this object that shares its content.
+    return new FloatViewBufferImpl (bb, (position () >> 2) + offset,
+                                      remaining (), remaining (), 0, -1,
+                                     isReadOnly ());
+  }
+  
+  public FloatBuffer asReadOnlyBuffer ()
+  {
+    // Create a copy of this object that shares its content and is read-only
+    return new FloatViewBufferImpl (bb, (position () >> 2) + offset,
+                                     remaining (), remaining (), 0, -1, true);
+  }
+  
+  public boolean isReadOnly ()
+  {
+    return readOnly;
+  }
+  
+  public boolean isDirect ()
+  {
+    return bb.isDirect ();
+  }
+  
+  public ByteOrder order ()
+  {
+    return ByteOrder.LITTLE_ENDIAN;
+  }
+}
diff --git a/libjava/gnu/java/nio/IntViewBufferImpl.java b/libjava/gnu/java/nio/IntViewBufferImpl.java
new file mode 100644
index 0000000..0bf5a08
--- /dev/null
+++ b/libjava/gnu/java/nio/IntViewBufferImpl.java
@@ -0,0 +1,156 @@
+/* IntViewBufferImpl.java -- 
+   Copyright (C) 2003 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., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 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.nio;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.IntBuffer;
+
+class IntViewBufferImpl extends IntBuffer
+{
+  private boolean readOnly;
+  private int offset;
+  private ByteBuffer bb;
+  private ByteOrder endian;
+  
+  public IntViewBufferImpl (ByteBuffer bb, boolean readOnly)
+  {
+    super (bb.remaining () >> 2, bb.remaining () >> 2, bb.position (), 0);
+    this.bb = bb;
+    this.readOnly = readOnly;
+    // FIXME: What if this is called from IntByteBufferImpl and ByteBuffer has changed its endianess ?
+    this.endian = bb.order ();
+  }
+
+  public IntViewBufferImpl (ByteBuffer bb, int offset, int capacity,
+                               int limit, int position, int mark,
+                               boolean readOnly)
+  {
+    super (limit, limit, offset, position);
+    this.bb = bb;
+    this.readOnly = readOnly;
+    // FIXME: What if this is called from IntViewBufferImpl and ByteBuffer has changed its endianess ?
+    this.endian = bb.order ();
+  }
+
+  public int get ()
+  {
+    int result = bb.getInt ((position () >> 2) + offset);
+    position (position () + 1);
+    return result;
+  }
+
+  public int get (int index)
+  {
+    return bb.getInt ((index >> 2) + offset);
+  }
+
+  public IntBuffer put (int value)
+  {
+    bb.putInt ((position () >> 2) + offset, value);
+    return this;
+  }
+  
+  public IntBuffer put (int index, int value)
+  {
+    bb.putInt ((index >> 2) + offset, value);
+    return this;
+  }
+
+  public IntBuffer compact ()
+  {
+    if (position () > 0)
+      {
+        // Copy all data from position() to limit() to the beginning of the
+        // buffer, set position to end of data and limit to capacity
+        // XXX: This can surely be optimized, for direct and non-direct buffers
+        
+        int count = limit () - position ();
+              
+        for (int i = 0; i < count; i++)
+          {
+            bb.putInt ((i >> 2) + offset,
+                          bb.getInt (((i + position ()) >> 2) + offset));
+          }
+
+        position (count);
+        limit (capacity ());
+      }
+
+    return this;
+  }
+  
+  public IntBuffer duplicate ()
+  {
+    // Create a copy of this object that shares its content
+    // FIXME: mark is not correct
+    return new IntViewBufferImpl (bb, offset, capacity (), limit (),
+                                     position (), -1, isReadOnly ());
+  }
+  
+  public IntBuffer slice ()
+  {
+    // Create a sliced copy of this object that shares its content.
+    return new IntViewBufferImpl (bb, (position () >> 2) + offset,
+                                      remaining (), remaining (), 0, -1,
+                                     isReadOnly ());
+  }
+  
+  public IntBuffer asReadOnlyBuffer ()
+  {
+    // Create a copy of this object that shares its content and is read-only
+    return new IntViewBufferImpl (bb, (position () >> 2) + offset,
+                                     remaining (), remaining (), 0, -1, true);
+  }
+  
+  public boolean isReadOnly ()
+  {
+    return readOnly;
+  }
+  
+  public boolean isDirect ()
+  {
+    return bb.isDirect ();
+  }
+  
+  public ByteOrder order ()
+  {
+    return ByteOrder.LITTLE_ENDIAN;
+  }
+}
diff --git a/libjava/gnu/java/nio/LongViewBufferImpl.java b/libjava/gnu/java/nio/LongViewBufferImpl.java
new file mode 100644
index 0000000..2311fee
--- /dev/null
+++ b/libjava/gnu/java/nio/LongViewBufferImpl.java
@@ -0,0 +1,156 @@
+/* LongViewBufferImpl.java -- 
+   Copyright (C) 2003 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., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 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.nio;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.LongBuffer;
+
+class LongViewBufferImpl extends LongBuffer
+{
+  private boolean readOnly;
+  private int offset;
+  private ByteBuffer bb;
+  private ByteOrder endian;
+  
+  public LongViewBufferImpl (ByteBuffer bb, boolean readOnly)
+  {
+    super (bb.remaining () >> 3, bb.remaining () >> 3, bb.position (), 0);
+    this.bb = bb;
+    this.readOnly = readOnly;
+    // FIXME: What if this is called from LongByteBufferImpl and ByteBuffer has changed its endianess ?
+    this.endian = bb.order ();
+  }
+
+  public LongViewBufferImpl (ByteBuffer bb, int offset, int capacity,
+                               int limit, int position, int mark,
+                               boolean readOnly)
+  {
+    super (limit, limit, offset, position);
+    this.bb = bb;
+    this.readOnly = readOnly;
+    // FIXME: What if this is called from LongViewBufferImpl and ByteBuffer has changed its endianess ?
+    this.endian = bb.order ();
+  }
+
+  public long get ()
+  {
+    long result = bb.getLong ((position () >> 3) + offset);
+    position (position () + 1);
+    return result;
+  }
+
+  public long get (int index)
+  {
+    return bb.getLong ((index >> 3) + offset);
+  }
+
+  public LongBuffer put (long value)
+  {
+    bb.putLong ((position () >> 3) + offset, value);
+    return this;
+  }
+  
+  public LongBuffer put (int index, long value)
+  {
+    bb.putLong ((index >> 3) + offset, value);
+    return this;
+  }
+
+  public LongBuffer compact ()
+  {
+    if (position () > 0)
+      {
+        // Copy all data from position() to limit() to the beginning of the
+        // buffer, set position to end of data and limit to capacity
+        // XXX: This can surely be optimized, for direct and non-direct buffers
+        
+        int count = limit () - position ();
+              
+        for (int i = 0; i < count; i++)
+          {
+            bb.putLong ((i >> 3) + offset,
+                          bb.getLong (((i + position ()) >> 3) + offset));
+          }
+
+        position (count);
+        limit (capacity ());
+      }
+
+    return this;
+  }
+  
+  public LongBuffer duplicate ()
+  {
+    // Create a copy of this object that shares its content
+    // FIXME: mark is not correct
+    return new LongViewBufferImpl (bb, offset, capacity (), limit (),
+                                     position (), -1, isReadOnly ());
+  }
+  
+  public LongBuffer slice ()
+  {
+    // Create a sliced copy of this object that shares its content.
+    return new LongViewBufferImpl (bb, (position () >> 3) + offset,
+                                      remaining (), remaining (), 0, -1,
+                                     isReadOnly ());
+  }
+  
+  public LongBuffer asReadOnlyBuffer ()
+  {
+    // Create a copy of this object that shares its content and is read-only
+    return new LongViewBufferImpl (bb, (position () >> 3) + offset,
+                                     remaining (), remaining (), 0, -1, true);
+  }
+  
+  public boolean isReadOnly ()
+  {
+    return readOnly;
+  }
+  
+  public boolean isDirect ()
+  {
+    return bb.isDirect ();
+  }
+  
+  public ByteOrder order ()
+  {
+    return ByteOrder.LITTLE_ENDIAN;
+  }
+}
diff --git a/libjava/gnu/java/nio/ShortViewBufferImpl.java b/libjava/gnu/java/nio/ShortViewBufferImpl.java
new file mode 100644
index 0000000..91cbff7
--- /dev/null
+++ b/libjava/gnu/java/nio/ShortViewBufferImpl.java
@@ -0,0 +1,156 @@
+/* ShortViewBufferImpl.java -- 
+   Copyright (C) 2003 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., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 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.nio;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.ShortBuffer;
+
+class ShortViewBufferImpl extends ShortBuffer
+{
+  private boolean readOnly;
+  private int offset;
+  private ByteBuffer bb;
+  private ByteOrder endian;
+  
+  public ShortViewBufferImpl (ByteBuffer bb, boolean readOnly)
+  {
+    super (bb.remaining () >> 1, bb.remaining () >> 1, bb.position (), 0);
+    this.bb = bb;
+    this.readOnly = readOnly;
+    // FIXME: What if this is called from ShortByteBufferImpl and ByteBuffer has changed its endianess ?
+    this.endian = bb.order ();
+  }
+
+  public ShortViewBufferImpl (ByteBuffer bb, int offset, int capacity,
+                               int limit, int position, int mark,
+                               boolean readOnly)
+  {
+    super (limit, limit, offset, position);
+    this.bb = bb;
+    this.readOnly = readOnly;
+    // FIXME: What if this is called from ShortViewBufferImpl and ByteBuffer has changed its endianess ?
+    this.endian = bb.order ();
+  }
+
+  public short get ()
+  {
+    short result = bb.getShort ((position () >> 1) + offset);
+    position (position () + 1);
+    return result;
+  }
+
+  public short get (int index)
+  {
+    return bb.getShort ((index >> 1) + offset);
+  }
+
+  public ShortBuffer put (short value)
+  {
+    bb.putShort ((position () >> 1) + offset, value);
+    return this;
+  }
+  
+  public ShortBuffer put (int index, short value)
+  {
+    bb.putShort ((index >> 1) + offset, value);
+    return this;
+  }
+
+  public ShortBuffer compact ()
+  {
+    if (position () > 0)
+      {
+        // Copy all data from position() to limit() to the beginning of the
+        // buffer, set position to end of data and limit to capacity
+        // XXX: This can surely be optimized, for direct and non-direct buffers
+        
+        int count = limit () - position ();
+              
+        for (int i = 0; i < count; i++)
+          {
+            bb.putShort ((i >> 1) + offset,
+                          bb.getShort (((i + position ()) >> 1) + offset));
+          }
+
+        position (count);
+        limit (capacity ());
+      }
+
+    return this;
+  }
+  
+  public ShortBuffer duplicate ()
+  {
+    // Create a copy of this object that shares its content
+    // FIXME: mark is not correct
+    return new ShortViewBufferImpl (bb, offset, capacity (), limit (),
+                                     position (), -1, isReadOnly ());
+  }
+  
+  public ShortBuffer slice ()
+  {
+    // Create a sliced copy of this object that shares its content.
+    return new ShortViewBufferImpl (bb, (position () >> 1) + offset,
+                                      remaining (), remaining (), 0, -1,
+                                     isReadOnly ());
+  }
+  
+  public ShortBuffer asReadOnlyBuffer ()
+  {
+    // Create a copy of this object that shares its content and is read-only
+    return new ShortViewBufferImpl (bb, (position () >> 1) + offset,
+                                     remaining (), remaining (), 0, -1, true);
+  }
+  
+  public boolean isReadOnly ()
+  {
+    return readOnly;
+  }
+  
+  public boolean isDirect ()
+  {
+    return bb.isDirect ();
+  }
+  
+  public ByteOrder order ()
+  {
+    return ByteOrder.LITTLE_ENDIAN;
+  }
+}
diff --git a/libjava/gnu/java/nio/natDirectByteBufferImpl.cc b/libjava/gnu/java/nio/natDirectByteBufferImpl.cc
new file mode 100644
index 0000000..317bc22
--- /dev/null
+++ b/libjava/gnu/java/nio/natDirectByteBufferImpl.cc
@@ -0,0 +1,44 @@
+// natDirectByteBufferImpl.cc
+
+/* Copyright (C) 2003  Free Software Foundation
+
+   This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
+details.  */
+
+#include <config.h>
+
+#include <gcj/cni.h>
+#include <jvm.h>
+
+#include <gnu/java/nio/DirectByteBufferImpl.h>
+
+jlong
+gnu::java::nio::DirectByteBufferImpl::allocateImpl (jint capacity)
+{
+  // FIXME: implement this
+  return 0;
+}
+
+void
+gnu::java::nio::DirectByteBufferImpl::freeImpl (jlong address)
+{
+  // FIXME: implement this
+}
+
+jbyte
+gnu::java::nio::DirectByteBufferImpl::getImpl (jint index)
+{
+  // FIXME: implement this
+  // Dont forget: add offset to index
+  return 0;
+}
+
+void
+gnu::java::nio::DirectByteBufferImpl::putImpl (jint index, jbyte value)
+{
+  // FIXME: implement this
+  // Dont forget: add offset to index
+}