Example usage for java.util.zip Inflater inflate

Introduction

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

Prototype

public int inflate(ByteBuffer output) throws DataFormatException 

Source Link

Document

Uncompresses bytes into specified buffer.

Usage

From source file:org.xdi.zip.CompressionHelper.java

public static byte[] inflate(byte[] data, boolean nowrap) throws IOException, DataFormatException {
    Inflater inflater = new Inflater(nowrap);
    inflater.setInput(data);//from  ww  w  . j  av a2s  . c o  m

    ByteArrayOutputStream os = new ByteArrayOutputStream(data.length);
    try {
        byte[] buffer = new byte[1024];
        while (!inflater.finished()) {
            int count = inflater.inflate(buffer);
            os.write(buffer, 0, count);
        }
    } finally {
        IOUtils.closeQuietly(os);
    }

    return os.toByteArray();
}

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From source file:org.wso2.identity.integration.test.requestPathAuthenticator.RequestPathAuthenticatorInvalidUserTestCase.java

/**
 * Decoding and deflating the encoded AuthReq
 *
 * @param encodedStr encoded AuthReq/*from w  w w. j a  va  2s.  com*/
 * @return decoded AuthReq
 */
private static String decode(String encodedStr) {
    try {
        Base64 base64Decoder = new Base64();
        byte[] xmlBytes = encodedStr.getBytes(DEFAULT_CHARSET);
        byte[] base64DecodedByteArray = base64Decoder.decode(xmlBytes);

        try {
            Inflater inflater = new Inflater(true);
            inflater.setInput(base64DecodedByteArray);
            byte[] xmlMessageBytes = new byte[5000];
            int resultLength = inflater.inflate(xmlMessageBytes);

            if (!inflater.finished()) {
                throw new RuntimeException("End of the compressed data stream has NOT been reached");
            }

            inflater.end();
            String decodedString = new String(xmlMessageBytes, 0, resultLength, (DEFAULT_CHARSET));
            return decodedString;

        } catch (DataFormatException e) {
            ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(base64DecodedByteArray);
            ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
            InflaterInputStream iis = new InflaterInputStream(byteArrayInputStream);
            byte[] buf = new byte[1024];
            int count = iis.read(buf);
            while (count != -1) {
                byteArrayOutputStream.write(buf, 0, count);
                count = iis.read(buf);
            }
            iis.close();
            String decodedStr = new String(byteArrayOutputStream.toByteArray(), StandardCharsets.UTF_8);

            return decodedStr;
        }
    } catch (IOException e) {
        Assert.fail("Error while decoding SAML response", e);
        return "";
    }
}

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From source file:Main.java

public static byte[] decompress(byte[] compressedBuffer) {
    Inflater inflater = new Inflater();
    inflater.setInput(compressedBuffer);

    ByteArrayOutputStream outputStream = new ByteArrayOutputStream(compressedBuffer.length);
    try {// w  w w  .j ava2s . c o m
        byte[] buffer = new byte[1024];
        while (!inflater.finished()) {
            int count = inflater.inflate(buffer);
            outputStream.write(buffer, 0, count);
        }
        byte[] output = outputStream.toByteArray();
        return output;
    } catch (DataFormatException e) {
        throw new RuntimeException(e);
    } finally {
        try {
            inflater.end();
            outputStream.close();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }
}

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From source file:Main.java

public static byte[] decompress(byte[] data) throws IOException {
    Inflater inflater = new Inflater();
    inflater.setInput(data);//from   w w  w.ja v a2 s.  c om
    inflater.finished();

    ByteArrayOutputStream outputStream = new ByteArrayOutputStream(data.length);
    try {
        byte[] buffer = new byte[1024];
        while (!inflater.finished()) {
            int count = inflater.inflate(buffer);
            outputStream.write(buffer, 0, count);
        }
        outputStream.close();
    } catch (DataFormatException ex) {
        throw new IOException(ex);
    }

    byte[] output = outputStream.toByteArray();
    inflater.end();
    return output;
}

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From source file:Main.java

public static byte[] decompress(byte[] data) {
    byte[] output = new byte[0];

    Inflater decompresser = new Inflater();
    decompresser.reset();/*from  w  w  w  .java 2  s . co m*/
    decompresser.setInput(data);

    ByteArrayOutputStream bos = new ByteArrayOutputStream(2 * data.length);
    try {
        byte[] buf = new byte[1024];
        while (!decompresser.finished()) {
            int length = decompresser.inflate(buf);
            bos.write(buf, 0, length);
        }
        output = bos.toByteArray();
        bos.close();
    } catch (Exception e) {
        output = data;
        e.printStackTrace();
    }

    decompresser.end();
    return output;
}

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From source file:Main.java

private static byte[] uncompressBytesInflateDeflate(byte[] inBytes) throws IOException {
    Inflater inflater = new Inflater();
    inflater.setInput(inBytes);/*from  w w  w . j a  v  a2s.  co  m*/
    ByteArrayOutputStream bos = new ByteArrayOutputStream(inBytes.length);
    byte[] buffer = new byte[1024 * 8];
    while (!inflater.finished()) {
        int count;
        try {
            count = inflater.inflate(buffer);
        } catch (DataFormatException e) {
            throw new IOException(e);
        }
        bos.write(buffer, 0, count);
    }
    byte[] output = bos.toByteArray();
    return output;
}

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

/**
 * Inflater //from  w w w .  ja  v  a2  s.c o  m
 *
 * @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//from  ww  w.j a va 2 s. co m
 * @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;
    }
}

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From source file:Main.java

public static byte[] decompress(byte[] data, int off, int len) {

    byte[] output = null;

    Inflater decompresser = new Inflater();
    decompresser.reset();/* w ww  .j a v a2 s  .c om*/
    decompresser.setInput(data, off, len);

    ByteArrayOutputStream out = new ByteArrayOutputStream(data.length);
    try {
        byte[] result = new byte[1024];
        while (!decompresser.finished()) {
            int i = decompresser.inflate(result);
            out.write(result, 0, i);
        }
        output = out.toByteArray();
    } catch (Exception e) {
        throw new RuntimeException(e);
    } finally {
        try {
            out.close();
        } catch (Exception e) {
        }
        decompresser.end();
    }
    return output;
}

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From source file:Main.java

public static InputStream inflate(byte[] deflatedToken, boolean nowrap) throws DataFormatException {
    Inflater inflater = new Inflater(nowrap);
    inflater.setInput(deflatedToken);/*  w w w  .  j  a  v  a2  s  .  c o  m*/

    byte[] input = new byte[deflatedToken.length * 2];
    int inflatedLen = 0;
    int inputLen = 0;
    byte[] inflatedToken = input;
    while (!inflater.finished()) {
        inputLen = inflater.inflate(input);
        if (!inflater.finished()) {

            if (inputLen == 0) {
                if (inflater.needsInput()) {
                    throw new DataFormatException("Inflater can not inflate all the token bytes");
                } else {
                    break;
                }
            }

            inflatedToken = new byte[input.length + inflatedLen];
            System.arraycopy(input, 0, inflatedToken, inflatedLen, inputLen);
            inflatedLen += inputLen;
        }
    }
    InputStream is = new ByteArrayInputStream(input, 0, inputLen);
    if (inflatedToken != input) {
        is = new SequenceInputStream(new ByteArrayInputStream(inflatedToken, 0, inflatedLen), is);
    }
    return is;
}

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