Package org.iq80.leveldb.util

Examples of org.iq80.leveldb.util.PureJavaCrc32C

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    {
        int crc = getChunkChecksum(type.getPersistentId(), slice.getRawArray(), slice.getRawOffset(), slice.length());

        // Format the header
        Slice header = Slices.allocate(HEADER_SIZE);
        SliceOutput sliceOutput = header.output();
        sliceOutput.writeInt(crc);
        sliceOutput.writeByte((byte) (slice.length() & 0xff));
        sliceOutput.writeByte((byte) (slice.length() >>> 8));
        sliceOutput.writeByte((byte) (type.getPersistentId()));

        return header;
    }
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        int nonSharedKeyLength = VariableLengthQuantity.readVariableLengthInt(data);
        int valueLength = VariableLengthQuantity.readVariableLengthInt(data);

        // read key
        Slice key = Slices.allocate(sharedKeyLength + nonSharedKeyLength);
        SliceOutput sliceOutput = key.output();
        if (sharedKeyLength > 0) {
            Preconditions.checkState(previousEntry != null, "Entry has a shared key but no previous entry was provided");
            sliceOutput.writeBytes(previousEntry.getKey(), 0, sharedKeyLength);
        }
        sliceOutput.writeBytes(data, nonSharedKeyLength);

        // read value
        Slice value = data.readSlice(valueLength);

        return new BlockEntry(key, value);
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    abstract protected Footer init() throws IOException;

    @Override
    public TableIterator iterator()
    {
        return new TableIterator(this, indexBlock.iterator());
    }
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    protected OutputStream wrapOutputStream(OutputStream underlying) throws IOException {
        return new SnappyOutputStream(underlying);
    }

    protected InputStream wrapInputStream(InputStream underlying) throws IOException {
        return new SnappyInputStream(underlying);
    }
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        snappyOutputStream.close();
    }

    public static ChannelBuffer decompress(ChannelBuffer in) throws IOException {
        ChannelBufferInputStream channelBufferInputStream = new ChannelBufferInputStream(in);
        SnappyInputStream inputStream = new SnappyInputStream(channelBufferInputStream);
        ChannelBuffer channelBuffer = ChannelBuffers.copiedBuffer(ByteStreams.toByteArray(inputStream));
        return channelBuffer;
    }
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        return channelBuffer;
    }

    public static byte[] decompress(byte[] in) throws IOException {
        ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(in);
        SnappyInputStream inputStream = new SnappyInputStream(byteArrayInputStream);
        return ByteStreams.toByteArray(inputStream);
    }
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    public static <T> T decode(byte[] cryptedBytes, Class<T> clazz) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException, DecoderException, IOException {
        byte[] bytes = cipherDecrypt.get().doFinal(cryptedBytes);


        SnappyInputStream snappyInputStream = new SnappyInputStream(new ByteArrayInputStream(bytes));


        //MessagePack messagePack = new MessagePack();
        return messagePack.read(ByteStreams.toByteArray(snappyInputStream), clazz);
    }
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    public String getType() {
        return "snappy";
    }

    protected OutputStream wrapOutputStream(OutputStream underlying) throws IOException {
        return new SnappyOutputStream(underlying);
    }
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        return byteArrayOutputStream.toByteArray();
    }

    public static void compress(byte[] in, OutputStream out) throws IOException {
        SnappyOutputStream snappyOutputStream = new SnappyOutputStream(out);
        snappyOutputStream.write(in);
        snappyOutputStream.close();
    }
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        byte[] origBytes = messagePack.write(object);
        System.out.println("orig length: " + origBytes.length);

        ByteArrayOutputStream out = new ByteArrayOutputStream();
        SnappyOutputStream snappyOutputStream = new SnappyOutputStream(out);
        snappyOutputStream.write(origBytes);
        snappyOutputStream.close();

        byte[] comressedBytes = out.toByteArray();
        System.out.println("comressedBytes length: " + comressedBytes.length);

        byte[] bytes = cipherEncrypt.get().doFinal(comressedBytes);
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