Delete ChannelInputStream.java.

This package-private class is a) unused and b) redundant due to `java.nio.channels.Channels.newInputStream(ReadableByteChannel)`

src/java/org/jivesoftware/openfire/net/ChannelInputStream.java

-/**
- * $RCSfile$
- * $Revision: $
- * $Date: $
- *
- * Copyright (C) 2005-2008 Jive Software. All rights reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.jivesoftware.openfire.net;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.nio.ByteBuffer;
-import java.nio.channels.ReadableByteChannel;
-
-/**
- * Class that simulate an InputStream given a un-blocking channel.
- *
- * @author Daniele Piras
- */
-class ChannelInputStream extends InputStream
-{
-  ByteBuffer buf = ByteBuffer.allocate(1024);
-
-  ReadableByteChannel inputChannel;
-
-  public ChannelInputStream(ReadableByteChannel ic)
-  {
-    inputChannel = ic;
-  }
-
-  private void doRead() throws IOException
-  {
-    final int cnt = inputChannel.read(buf);
-    if (cnt > 0)
-    {
-      buf.flip();
-    }
-    else
-    {
-      if (cnt == -1)
-      {
-        buf.flip();
-      }
-    }
-  }
-
-  @Override
-public synchronized int read(byte[] bytes, int off, int len)
-      throws IOException
-  {
-    if (buf.position() == 0)
-    {
-      doRead();
-    }
-    else
-    {
-      buf.flip();
-    }
-    len = Math.min(len, buf.remaining());
-    if (len == 0)
-    {
-      return -1;
-    }
-    buf.get(bytes, off, len);
-    if (buf.hasRemaining())
-    {
-      // Discard read data and move unread data to the begining of the buffer.
-      // Leave
-      // the position at the end of the buffer as a way to indicate that there
-      // is
-      // unread data
-      buf.compact();
-    }
-    else
-    {
-      buf.clear();
-    }
-    return len;
-  }
-
-  @Override
-  public int read() throws IOException
-  {
-    byte[] tmpBuf = new byte[1];
-    int byteRead = read(tmpBuf, 0, 1);
-    if (byteRead < 1)
-    {
-      return -1;
-    }
-    else
-    {
-      return tmpBuf[0];
-    }
-  }
-}