Example usage for com.google.common.io ByteStreams newDataOutput

Introduction

In this page you can find the example usage for com.google.common.io ByteStreams newDataOutput.

Prototype

public static ByteArrayDataOutput newDataOutput(ByteArrayOutputStream byteArrayOutputSteam) 

Source Link

Document

Returns a new ByteArrayDataOutput instance which writes to the given ByteArrayOutputStream .

Usage

From source file:io.airlift.security.der.DerUtils.java

/**
 * Encodes a sequence of encoded values.
 *//*from  w  w w .  j  a v a2 s .co  m*/
public static byte[] encodeSequence(byte[]... encodedValues) {
    int length = 0;
    for (byte[] encodedValue : encodedValues) {
        length += encodedValue.length;
    }
    byte[] lengthEncoded = encodeLength(length);

    ByteArrayDataOutput out = ByteStreams.newDataOutput(1 + lengthEncoded.length + length);
    out.write(SEQUENCE_TAG);
    out.write(lengthEncoded);
    for (byte[] entry : encodedValues) {
        out.write(entry);
    }
    return out.toByteArray();
}

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From source file:org.elasticsoftware.elasticactors.cassandra.serialization.CompressingSerializer.java

@Override
public byte[] serialize(I object) throws IOException {
    byte[] serializedObject = delegate.serialize(object);
    if (serializedObject.length > compressionThreshold) {
        byte[] compressedBytes = lz4Compressor.compress(serializedObject);
        ByteArrayDataOutput dataOutput = ByteStreams.newDataOutput(compressedBytes.length + 8);
        dataOutput.write(MAGIC_HEADER);//from  www  .  j a  v a 2 s . c  o m
        dataOutput.writeInt(serializedObject.length);
        dataOutput.write(compressedBytes);
        return dataOutput.toByteArray();
    } else {
        return serializedObject;
    }
}

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From source file:org.elasticsoftware.elasticactors.cassandra2.serialization.CompressingSerializer.java

@Override
public ByteBuffer serialize(I object) throws IOException {
    byte[] serializedObject = delegate.serialize(object);
    if (serializedObject.length > compressionThreshold) {
        byte[] compressedBytes = lz4Compressor.compress(serializedObject);
        ByteArrayDataOutput dataOutput = ByteStreams.newDataOutput(compressedBytes.length + 8);
        dataOutput.write(MAGIC_HEADER);//from ww w  .  j  a  va  2s  . c o m
        dataOutput.writeInt(serializedObject.length);
        dataOutput.write(compressedBytes);
        return ByteBuffer.wrap(dataOutput.toByteArray());
    } else {
        return ByteBuffer.wrap(serializedObject);
    }
}

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From source file:org.locationtech.geogig.storage.datastream.FormatCommonV2_1.java

@Override
public void writeFeature(RevFeature feature, DataOutput target) throws IOException {

    try (InternalByteArrayOutputStream out = new InternalByteArrayOutputStream()) {
        final DataOutput data = ByteStreams.newDataOutput(out);
        final int attrCount = feature.size();
        final int[] dataOffsets = new int[attrCount];

        int offset = 0;
        for (int i = 0; i < attrCount; i++) {
            Object value = feature.get(i).orNull();
            FieldType type = FieldType.forValue(value);
            data.writeByte(type.getTag() & 0xFF);
            DataStreamValueSerializerV2.write(value, data);
            dataOffsets[i] = offset;/*from w  w w .  j ava 2s .  co  m*/
            offset = out.size();
        }

        // <HEADER>
        // - unsigned varint: number of attributes
        writeUnsignedVarInt(attrCount, target);

        // - unsigned varint: size of <DATA>
        final int dataSize = out.size();
        writeUnsignedVarInt(dataSize, target);

        // - unsigned varint[number of attributes]: attribute offsets (starting form zero at
        // <DATA>, not including the header)
        for (int i = 0; i < attrCount; i++) {
            writeUnsignedVarInt(dataOffsets[i], target);
        }

        // <DATA>
        target.write(out.intenal(), 0, dataSize);
    }
}

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From source file:com.google.devrel.gmscore.tools.apk.arsc.ResourceString.java

/**
 * Encodes a string in either UTF-8 or UTF-16 and returns the bytes of the encoded string.
 * Strings are prefixed by 2 values. The first is the number of characters in the string.
 * The second is the encoding length (number of bytes in the string).
 *
 * <p>Here's an example UTF-8-encoded string of ab:
 * <pre>03 04 61 62 C2 A9 00</pre>
 *
 * @param str The string to be encoded./* w  w w. j av a2 s  . c  om*/
 * @param type The encoding type that the {@link ResourceString} should be encoded in.
 * @return The encoded string.
 */
public static byte[] encodeString(String str, Type type) {
    byte[] bytes = str.getBytes(type.charset());
    // The extra 5 bytes is for metadata (character count + byte count) and the NULL terminator.
    ByteArrayDataOutput output = ByteStreams.newDataOutput(bytes.length + 5);
    encodeLength(output, str.length(), type);
    if (type == Type.UTF8) { // Only UTF-8 strings have the encoding length.
        encodeLength(output, bytes.length, type);
    }
    output.write(bytes);
    // NULL-terminate the string
    if (type == Type.UTF8) {
        output.write(0);
    } else {
        output.writeShort(0);
    }
    return output.toByteArray();
}

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From source file:io.airlift.security.der.DerUtils.java

/**
 * Encodes a bit string padded with the specified number of bits.
 * The encoding is a byte containing the padBits followed by the value bytes.
 *///from w  w  w  .  ja  v a  2s.c  o  m
public static byte[] encodeBitString(int padBits, byte[] value) {
    checkArgument(padBits >= 0 && padBits < 8, "Invalid pad bits");

    byte[] lengthEncoded = encodeLength(value.length + 1);
    ByteArrayDataOutput out = ByteStreams.newDataOutput(2 + lengthEncoded.length + value.length);
    out.write(BIT_STRING_TAG);
    out.write(lengthEncoded);
    out.write(padBits);
    out.write(value);
    return out.toByteArray();
}

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From source file:io.airlift.security.der.DerUtils.java

/**
 * Encodes an octet string.//from ww w.j  a v  a  2  s .  c o m
 */
public static byte[] encodeOctetString(byte[] value) {
    byte[] lengthEncoded = encodeLength(value.length);
    ByteArrayDataOutput out = ByteStreams.newDataOutput(2 + lengthEncoded.length + value.length);
    out.write(OCTET_STRING_TAG);
    out.write(lengthEncoded);
    out.write(value);
    return out.toByteArray();
}

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From source file:org.locationtech.geogig.storage.datastream.v2_3.RevTreeFormat.java

private static void encode(final RevTree tree, ByteArrayOutputStream buff) throws IOException {
    DataOutput out = ByteStreams.newDataOutput(buff);
    final int offsetOfTreesNodeset;
    final int offsetOfFeaturesNodeset;
    final int offsetOfBuckets;
    final int offsetOfStringTable;
    final int offsetOfTail;

    StringTable stringTable = StringTable.unique();
    Header.encode(out, tree);/* w w  w . j  ava  2s .c o  m*/

    offsetOfTreesNodeset = tree.treesSize() == 0 ? 0 : buff.size();
    if (tree.treesSize() > 0) {
        NodeSet.encode(out, tree.trees(), stringTable);
    }

    offsetOfFeaturesNodeset = tree.featuresSize() == 0 ? 0 : buff.size();
    if (tree.featuresSize() > 0) {
        NodeSet.encode(out, tree.features(), stringTable);
    }

    offsetOfBuckets = tree.bucketsSize() == 0 ? 0 : buff.size();
    BucketSet.encode(out, tree, stringTable);

    offsetOfStringTable = buff.size();
    stringTable.encode(out);
    offsetOfTail = buff.size();
    Tail.encode(out, //
            offsetOfTreesNodeset, //
            offsetOfFeaturesNodeset, //
            offsetOfBuckets, //
            offsetOfStringTable, //
            offsetOfTail);
}

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From source file:com.netease.flume.taildirSource.TailFile.java

private String readLine() throws IOException {
    ByteArrayDataOutput out = ByteStreams.newDataOutput(300);
    int i = 0;//from  www  .ja va  2s. c  o m
    int c;
    while ((c = raf.read()) != -1) {
        i++;
        out.write((byte) c);
        if (c == LINE_SEP.charAt(0)) {
            break;
        }
    }
    if (i == 0) {
        return null;
    }
    return new String(out.toByteArray(), Charsets.UTF_8);
}

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From source file:org.locationtech.geogig.storage.postgresql.PGIndexDatabase.java

@Override
public IndexInfo createIndexInfo(String treeName, String attributeName, IndexType strategy,
        @Nullable Map<String, Object> metadata) {
    IndexInfo index = new IndexInfo(treeName, attributeName, strategy, metadata);
    final String sql = format(
            "INSERT INTO %s (repository, treeName, attributeName, strategy, metadata) VALUES(?, ?, ?, ?, ?)",
            config.getTables().index());

    try (Connection cx = PGStorage.newConnection(dataSource)) {
        cx.setAutoCommit(false);//from  w  ww.j  a v  a  2 s  . c o m
        try (PreparedStatement ps = cx
                .prepareStatement(log(sql, LOG, repositoryId, treeName, attributeName, strategy, metadata));
                ByteArrayOutputStream outStream = new ByteArrayOutputStream()) {
            ps.setInt(1, repositoryId);
            ps.setString(2, treeName);
            ps.setString(3, attributeName);
            ps.setString(4, strategy.toString());
            if (index.getMetadata() != null) {
                DataOutput out = ByteStreams.newDataOutput(outStream);
                DataStreamValueSerializerV2.write(index.getMetadata(), out);
                ps.setBytes(5, outStream.toByteArray());
            } else {
                ps.setNull(5, java.sql.Types.OTHER, "bytea");
            }
            ps.executeUpdate();
            cx.commit();
        } catch (SQLException | IOException e) {
            rollbackAndRethrow(cx, e);
        } finally {
            cx.setAutoCommit(true);
        }
    } catch (SQLException e) {
        throw propagate(e);
    }
    return index;
}

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