Example usage for java.util.zip Inflater Inflater

Introduction

In this page you can find the example usage for java.util.zip Inflater Inflater.

Prototype

public Inflater() 

Source Link

Document

Creates a new decompressor.

Usage

From source file:com.ctriposs.r2.filter.compression.DeflateCompressor.java

@Override
public byte[] inflate(InputStream data) throws CompressionException {
    byte[] input;
    try {/*from w w w  .ja  va2  s  . com*/
        input = IOUtils.toByteArray(data);
    } catch (IOException e) {
        throw new CompressionException(CompressionConstants.DECODING_ERROR + CompressionConstants.BAD_STREAM,
                e);
    }

    Inflater zlib = new Inflater();
    zlib.setInput(input);

    ByteArrayOutputStream output = new ByteArrayOutputStream();
    byte[] temp = new byte[CompressionConstants.BUFFER_SIZE];

    int bytesRead;
    while (!zlib.finished()) {
        try {
            bytesRead = zlib.inflate(temp);
        } catch (DataFormatException e) {
            throw new CompressionException(CompressionConstants.DECODING_ERROR + getContentEncodingName(), e);
        }
        if (bytesRead == 0) {
            if (!zlib.needsInput()) {
                throw new CompressionException(CompressionConstants.DECODING_ERROR + getContentEncodingName());
            } else {
                break;
            }
        }

        if (bytesRead > 0) {
            output.write(temp, 0, bytesRead);
        }
    }

    zlib.end();
    return output.toByteArray();
}

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From source file:org.javaweb.utils.IOUtils.java

/**
 * Inflater /*from   w w  w .  ja v a2 s .  com*/
 *
 * @param data
 * @return
 * @throws DataFormatException
 */
public static byte[] decompressInflater(byte[] data) throws DataFormatException {
    Inflater inflater = new Inflater();
    inflater.setInput(data);
    ByteArrayOutputStream out = new ByteArrayOutputStream(data.length);
    byte[] buffer = new byte[2048];

    while (!inflater.finished()) {
        int count = inflater.inflate(buffer);
        out.write(buffer, 0, count);
    }

    return out.toByteArray();
}

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From source file:Main.java

/**
 * <p>Decompresses a the content of a file from {@code startPosition} of {@code compressedSize}
 * and return the bytes of it. If a {@code compressedSize} can be provided if it is known
 * how large the decompressed content will be.</p>
 *
 * @param file             the file//  w w w .j  a  va  2 s.c om
 * @param startPosition    the start position
 * @param compressedSize   the compresse
 * @param decompressedSize the decompressed size
 * @return the decompressed bytes
 * @throws IOException         if there was any io issues
 * @throws DataFormatException if there was an issue decompressing content
 */
public static byte[] decompress(File file, int startPosition, int compressedSize, int decompressedSize)
        throws IOException, DataFormatException {

    if (decompressedSize == 0) {
        return decompress(file, startPosition, compressedSize);
    }

    try (FileChannel fileChannel = FileChannel.open(file.toPath())) {
        ByteBuffer buffer = fileChannel.map(FileChannel.MapMode.READ_ONLY, startPosition, compressedSize);
        Inflater inflater = new Inflater();
        byte[] compressedBytes = new byte[compressedSize];
        byte[] bytes = new byte[decompressedSize];

        buffer.get(compressedBytes);
        inflater.setInput(compressedBytes, 0, compressedSize);
        inflater.inflate(bytes);
        inflater.end();

        return bytes;
    }
}

---

From source file:org.getspout.spout.packet.PacketBlockData.java

public void decompress() {
    if (compressed) {
        Inflater decompressor = new Inflater();
        decompressor.setInput(data);/*  w  w  w  .  j  a v a  2s  . c  o  m*/

        ByteArrayOutputStream bos = new ByteArrayOutputStream(data.length);

        byte[] buf = new byte[1024];
        while (!decompressor.finished()) {
            try {
                int count = decompressor.inflate(buf);
                bos.write(buf, 0, count);
            } catch (DataFormatException e) {

            }
        }
        try {
            bos.close();
        } catch (IOException e) {

        }

        data = bos.toByteArray();
    }
}

---

From source file:com.qatickets.common.ZIPHelper.java

public static byte[] decompressAsBytes(byte[] data) {

    if (data == null) {
        return null;
    }/*w  w w.  j a v a  2  s  . c o  m*/

    // Create the decompressor and give it the data to compress
    final Inflater decompressor = new Inflater();
    decompressor.setInput(data);

    // Create an expandable byte array to hold the decompressed data
    final ByteArrayOutputStream bos = new ByteArrayOutputStream(data.length);

    // Decompress the data
    final byte[] buf = new byte[1024];
    while (!decompressor.finished()) {
        try {
            final int count = decompressor.inflate(buf);
            bos.write(buf, 0, count);
        } catch (DataFormatException e) {
        }
    }
    try {
        bos.close();
    } catch (IOException e) {
    }

    // Get the decompressed data
    final byte[] decompressedData = bos.toByteArray();

    decompressor.end();

    return decompressedData;
}

---

From source file:org.diorite.impl.connection.packets.PacketCompression.java

public PacketCompression(final int threshold) {
    this.threshold = threshold;
    this.deflater = new Deflater();
    this.inflater = new Inflater();
}

---

From source file:com.simiacryptus.text.CompressionUtil.java

/**
 * Decode lz byte [ ]./*ww w  . j a  va2s  .c  o  m*/
 *
 * @param data       the data
 * @param dictionary the dictionary
 * @return the byte [ ]
 */
public static byte[] decodeLZ(byte[] data, String dictionary) {
    try {
        Inflater decompresser = new Inflater();
        decompresser.setInput(data, 0, data.length);
        byte[] result = new byte[data.length * 32];
        int resultLength = 0;
        if (!dictionary.isEmpty()) {
            resultLength = decompresser.inflate(result);
            assert (0 == resultLength);
            if (decompresser.needsDictionary()) {
                byte[] bytes = dictionary.getBytes("UTF-8");
                decompresser.setDictionary(bytes);
            }
        }
        resultLength = decompresser.inflate(result);
        decompresser.end();
        return Arrays.copyOfRange(result, 0, resultLength);
    } catch (DataFormatException | UnsupportedEncodingException e) {
        throw new RuntimeException(e);
    }
}

---

From source file:org.getspout.spoutapi.packet.PacketCacheFile.java

public void decompress() {
    if (compressed) {
        Inflater decompressor = new Inflater();
        decompressor.setInput(fileData);

        ByteArrayOutputStream bos = new ByteArrayOutputStream(fileData.length);

        byte[] buf = new byte[1024];
        while (!decompressor.finished()) {
            try {
                int count = decompressor.inflate(buf);
                bos.write(buf, 0, count);
            } catch (DataFormatException e) {
            }/*ww w .  ja v  a 2 s  .  c o m*/
        }
        try {
            bos.close();
        } catch (IOException e) {
        }

        fileData = bos.toByteArray();
    }
}

---

From source file:org.getspout.spoutapi.packet.PacketSendPrecache.java

public void decompress() {
    if (compressed) {
        Inflater decompressor = new Inflater();
        decompressor.setInput(fileData);
        ByteArrayOutputStream bos = new ByteArrayOutputStream(fileData.length);
        byte[] buf = new byte[1024];
        while (!decompressor.finished()) {
            try {
                int count = decompressor.inflate(buf);
                bos.write(buf, 0, count);
            } catch (DataFormatException e) {
            }/*w w  w .  ja v a2  s .  c o m*/
        }
        try {
            bos.close();
        } catch (IOException e) {
        }
        fileData = bos.toByteArray();
    }
}

---

From source file:org.getspout.spout.packet.PacketCacheFile.java

public void decompress() {
    if (compressed) {
        Inflater decompressor = new Inflater();
        decompressor.setInput(fileData);

        ByteArrayOutputStream bos = new ByteArrayOutputStream(fileData.length);

        byte[] buf = new byte[1024];
        while (!decompressor.finished()) {
            try {
                int count = decompressor.inflate(buf);
                bos.write(buf, 0, count);
            } catch (DataFormatException e) {

            }//from  w w  w  .ja  va 2  s  . c om
        }
        try {
            bos.close();
        } catch (IOException e) {

        }

        fileData = bos.toByteArray();
    }
}

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