Package io.netty.buffer

Examples of io.netty.buffer.ChannelBuffer

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            ChannelHandlerContext ctx, Channel channel, Object msg) throws Exception {
        if (!(msg instanceof ChannelBuffer)) {
            return msg;
        }

        ChannelBuffer buf = (ChannelBuffer) msg;
        if (buf.hasArray()) {
            final int offset = buf.readerIndex();
            if (extensionRegistry == null) {
                return prototype.newBuilderForType().mergeFrom(
                        buf.array(), buf.arrayOffset() + offset, buf.readableBytes()).build();
            } else {
                return prototype.newBuilderForType().mergeFrom(
                        buf.array(), buf.arrayOffset() + offset, buf.readableBytes(), extensionRegistry).build();
            }
        } else {
            if (extensionRegistry == null) {
                return prototype.newBuilderForType().mergeFrom(
                        new ChannelBufferInputStream((ChannelBuffer) msg)).build();
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        if (!(m instanceof ChannelBuffer)) {
            ctx.sendUpstream(e);
            return;
        }

        ChannelBuffer input = (ChannelBuffer) m;
        if (!input.readable()) {
            return;
        }

        if (cumulation == null) {
            // the cumulation buffer is not created yet so just pass the input to callDecode(...) method
            callDecode(ctx, e.getChannel(), input, e.getRemoteAddress());
            if (input.readable()) {
                // seems like there is something readable left in the input buffer. So create the cumulation buffer and copy the input into it
                ChannelBuffer cumulation = cumulation(ctx);
                cumulation.writeBytes(input);
            }
        } else {
            ChannelBuffer cumulation = cumulation(ctx);
            if (cumulation.readable()) {
                cumulation.discardReadBytes();
                cumulation.writeBytes(input);
                callDecode(ctx, e.getChannel(), cumulation, e.getRemoteAddress());
            } else {
                callDecode(ctx, e.getChannel(), input, e.getRemoteAddress());
                if (input.readable()) {
                    cumulation.writeBytes(input);
                }
            }
        }
       
    }
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    }

    private void cleanup(ChannelHandlerContext ctx, ChannelStateEvent e)
            throws Exception {
        try {
            ChannelBuffer cumulation = this.cumulation;
            if (cumulation == null) {
                return;
            } else {
                this.cumulation = null;
            }

            if (cumulation.readable()) {
                // Make sure all frames are read before notifying a closed channel.
                callDecode(ctx, ctx.getChannel(), cumulation, null);
            }

            // Call decodeLast() finally.  Please note that decodeLast() is
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     *
     * @param ctx the {@link ChannelHandlerContext} for this handler
     * @return buffer the {@link ChannelBuffer} which is used for cumulation
     */
    private ChannelBuffer cumulation(ChannelHandlerContext ctx) {
        ChannelBuffer c = cumulation;
        if (c == null) {
            c = createCumulationDynamicBuffer(ctx);
            cumulation = c;
        }
        return c;
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            Object msg) throws Exception {
        if (!(msg instanceof ChannelBuffer)) {
            return msg;
        }

        ChannelBuffer body = (ChannelBuffer) msg;
        int length = body.readableBytes();
        ChannelBuffer header =
            channel.getConfig().getBufferFactory().getBuffer(
                    body.order(),
                    CodedOutputStream.computeRawVarint32Size(length));
        CodedOutputStream codedOutputStream = CodedOutputStream
                .newInstance(new ChannelBufferOutputStream(header));
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        if (src == null) {
            throw new NullPointerException("src");
        }

        ChannelBuffer dest = encode(
                src, src.readerIndex(), src.readableBytes(), breakLines, dialect, bufferFactory);
        src.readerIndex(src.writerIndex());
        return dest;
    }
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    @Override
    protected Object decode(ChannelHandlerContext ctx, Channel channel, Object msg) throws Exception {
        if (!(msg instanceof ChannelBuffer)) {
            return msg;
        }
        ChannelBuffer buf = (ChannelBuffer) msg;
        byte[] array;
        if (buf.hasArray()) {
            if (buf.arrayOffset() == 0 && buf.readableBytes() == buf.capacity()) {
                // we have no offset and the length is the same as the capacity. Its safe to reuse the array without copy it first
                array = buf.array();
            } else {
                // copy the ChannelBuffer to a byte array
                array = new byte[buf.readableBytes()];
                buf.getBytes(0, array);
            }
        } else {
            // copy the ChannelBuffer to a byte array

            array = new byte[buf.readableBytes()];
            buf.getBytes(0, array);
        }
        return array;
    }
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        if (bufferFactory == null) {
            throw new NullPointerException("bufferFactory");
        }

        int len43 = len * 4 / 3;
        ChannelBuffer dest = bufferFactory.getBuffer(
                src.order(),
                len43 +
                (len % 3 > 0? 4 : 0) + // Account for padding
                (breakLines? len43 / MAX_LINE_LENGTH : 0)); // New lines
        int d = 0;
        int e = 0;
        int len2 = len - 2;
        int lineLength = 0;
        for (; d < len2; d += 3, e += 4) {
            encode3to4(src, d + off, 3, dest, e, dialect);

            lineLength += 4;
            if (breakLines && lineLength == MAX_LINE_LENGTH) {
                dest.setByte(e + 4, NEW_LINE);
                e ++;
                lineLength = 0;
            } // end if: end of line
        } // end for: each piece of array

        if (d < len) {
            encode3to4(src, d + off, len - d, dest, e, dialect);
            e += 4;
        } // end if: some padding needed

        return dest.slice(0, e);
    }
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        if (src == null) {
            throw new NullPointerException("src");
        }

        ChannelBuffer dest = decode(src, src.readerIndex(), src.readableBytes(), dialect, bufferFactory);
        src.readerIndex(src.writerIndex());
        return dest;
    }
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        }

        byte[] DECODABET = decodabet(dialect);

        int len34 = len * 3 / 4;
        ChannelBuffer dest = bufferFactory.getBuffer(src.order(), len34); // Upper limit on size of output
        int outBuffPosn = 0;

        byte[] b4 = new byte[4];
        int b4Posn = 0;
        int i = 0;
        byte sbiCrop = 0;
        byte sbiDecode = 0;
        for (i = off; i < off + len; i ++) {
            sbiCrop = (byte) (src.getByte(i) & 0x7f); // Only the low seven bits
            sbiDecode = DECODABET[sbiCrop];

            if (sbiDecode >= WHITE_SPACE_ENC) { // White space, Equals sign or better
                if (sbiDecode >= EQUALS_SIGN_ENC) { // Equals sign or better
                    b4[b4Posn ++] = sbiCrop;
                    if (b4Posn > 3) { // Quartet built
                        outBuffPosn += decode4to3(
                                b4, 0, dest, outBuffPosn, dialect);
                        b4Posn = 0;

                        // If that was the equals sign, break out of 'for' loop
                        if (sbiCrop == EQUALS_SIGN) {
                            break;
                        }
                    }
                }
            } else {
                throw new IllegalArgumentException(
                        "bad Base64 input character at " + i + ": " +
                        src.getUnsignedByte(i) + " (decimal)");
            }
        }

        return dest.slice(0, outBuffPosn);
    }
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