Examples of net.sf.cindy.Buffer

net.sf.cindy.Buffer
A replacement for java.nio.ByteBuffer.
Advantage:
- cachable
- some utility method, such as indexOf/putString/getString/getUnsignedXXX
- can add custom implementation
Buffers are not safe for use by multiple concurrent threads. If a buffer is to be used by more than one thread then access to the buffer should be controlled by appropriate synchronization. @author Roger Chen @version $id$

            sendContent(session);
        }


        private void sendName(Session session) {
            ByteBuffer name = Charset.UTF8.encode(file.getName());
            Buffer content = BufferFactory.allocate(name.remaining() + 2)
                    .putUnsignedShort(name.remaining()).put(name).flip();
            session.send(content);
        }

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                sendContent(session);
        }


        private void sendContent(Session session) throws IOException {
            for (int i = 1; i <= QUEUE_SIZE; i++) {
                Buffer buffer = BufferFactory.allocate(MESSAGE_SIZE);
                buffer.position(2);
                int readCount = buffer.read(fc);


                if (readCount == -1) { // end of file
                    buffer.release();
                    session.send(BufferFactory.allocate(0)).addListener(
                            new FutureListener() {


                                public void futureCompleted(Future future)
                                        throws Exception {
                                    future.getSession().close();
                                }
                            });
                    break;
                } else {
                    buffer.putUnsignedShort(0, readCount).flip();
                    session.send(buffer);
                }
            }
        }

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     * @version $id$
     */
    private static class ChatMessageDecoder implements PacketDecoder {


        public Object decode(Session session, Packet packet) throws Exception {
            Buffer buffer = packet.getContent();
            int index = buffer.indexOf(TOKEN);
            if (index >= 0) {
                String s = buffer.getString(Charset.SYSTEM, index
                        - buffer.position());
                buffer.skip(TOKEN.length);
                return s;
            }
            return null;
        }

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    }


    public Buffer compact() {
        checkReadonly();


        Buffer buffer = BufferFactory.allocate(remaining());
        batch(true, getIndex(0), buffer, buffer.capacity());
        buffer.position(0);


        int index = getIndex(0, 0);
        Entry entry = getEntry(index);
        int offset = index - entry.position;


        do {
            Buffer content = entry.buffer;
            buffer.limit(Math.min(buffer.capacity(), buffer.position()
                    + content.remaining() - offset));
            content.put(content.position() + offset, buffer);
            if (buffer.position() == buffer.capacity())
                break;
            offset = 0;
        } while ((entry = entry.next) != header);

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        return batch(false, putIndex(index, length), src, length);
    }


    private short decodeShort(int index) {
        Entry entry = getEntry(index);
        Buffer buffer = entry.buffer;


        int idx = buffer.position() + index - entry.position;
        if (buffer.limit() - idx >= 2)
            return buffer.getShort(idx);
        return Bits.decodeShort(this, index);
    }

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        return Bits.decodeShort(this, index);
    }


    private Buffer encodeShort(int index, short s) {
        Entry entry = getEntry(index);
        Buffer buffer = entry.buffer;


        int idx = buffer.position() + index - entry.position;
        if (buffer.limit() - idx >= 2)
            buffer.putShort(idx, s);
        else
            Bits.encodeShort(this, index, s);
        return this;
    }

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        return encodeShort(putIndex(index, 2), s);
    }


    private int decodeInt(int index) {
        Entry entry = getEntry(index);
        Buffer buffer = entry.buffer;


        int idx = buffer.position() + index - entry.position;
        if (buffer.limit() - idx >= 4)
            return buffer.getInt(idx);
        return Bits.decodeInt(this, index);
    }

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        return Bits.decodeInt(this, index);
    }


    private Buffer encodeInt(int index, int i) {
        Entry entry = getEntry(index);
        Buffer buffer = entry.buffer;


        int idx = buffer.position() + index - entry.position;
        if (buffer.limit() - idx >= 4)
            buffer.putInt(idx, i);
        else
            Bits.encodeInt(this, index, i);
        return this;
    }

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        return encodeInt(putIndex(index, 4), i);
    }


    private long decodeLong(int index) {
        Entry entry = getEntry(index);
        Buffer buffer = entry.buffer;


        int idx = buffer.position() + index - entry.position;
        if (buffer.limit() - idx >= 8)
            return buffer.getLong(idx);
        return Bits.decodeLong(this, index);
    }

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        return Bits.decodeLong(this, index);
    }


    private Buffer encodeLong(int index, long l) {
        Entry entry = getEntry(index);
        Buffer buffer = entry.buffer;


        int idx = buffer.position() + index - entry.position;
        if (buffer.limit() - idx >= 8)
            buffer.putLong(idx, l);
        else
            Bits.encodeLong(this, index, l);
        return this;
    }

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Related Classes of net.sf.cindy.Buffer

net.sf.cindy.buffer.AbstractBuffer

net.sf.cindy.buffer.BufferBuilder

net.sf.cindy.buffer.BufferBuilderTest

net.sf.cindy.buffer.BufferTest

net.sf.cindy.buffer.ByteArrayBufferTest

net.sf.cindy.buffer.ByteBufferBufferTest

net.sf.cindy.buffer.LinkedBuffer

net.sf.cindy.decoder.BufferDecoder

net.sf.cindy.decoder.ByteArrayDecoder

net.sf.cindy.decoder.ByteBufferDecoder

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