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:org.esupportail.publisher.security.CustomSingleSignOutHandler.java

/**
 * Uncompress a logout message (base64 + deflate).
 *
 * @param originalMessage the original logout message.
 * @return the uncompressed logout message.
 *///from w w  w  .  java  2  s.  c om
private String uncompressLogoutMessage(final String originalMessage) {
    final byte[] binaryMessage = Base64.decodeBase64(originalMessage.getBytes());

    Inflater decompresser = null;
    try {
        // decompress the bytes
        decompresser = new Inflater();
        decompresser.setInput(binaryMessage);
        final byte[] result = new byte[binaryMessage.length * DECOMPRESSION_FACTOR];

        final int resultLength = decompresser.inflate(result);

        // decode the bytes into a String
        return new String(result, 0, resultLength, "UTF-8");
    } catch (final Exception e) {
        logger.error("Unable to decompress logout message", e);
        throw new RuntimeException(e);
    } finally {
        if (decompresser != null) {
            decompresser.end();
        }
    }
}

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From source file:org.eclipsetrader.directa.internal.core.connector.BackfillConnector.java

protected void parseIntradayStream(BufferedInputStream in, List<OHLC> list) throws Exception {
    Calendar cal = Calendar.getInstance();

    int startTime = 9 * 60;
    int endTime = 17 * 60 + 25;
    ;//from w  ww . j  a v  a 2  s. c om

    byte[] buffer = new byte[1];
    while (in.read(buffer) == 1) {
        if (buffer[0] == '<') {
            StringBuilder sb = new StringBuilder();
            while (in.read(buffer) == 1) {
                if (buffer[0] == '>') {
                    break;
                }
                sb.append(new String(buffer));
            }
            String line = sb.toString();
            if (line.startsWith("GRA")) { //$NON-NLS-1$
                int s = line.indexOf("L=") + 2; //$NON-NLS-1$
                int e = line.indexOf(" ", s); //$NON-NLS-1$
                int uncompressLen = Integer.parseInt(line.substring(s, e));

                byte[] output = new byte[uncompressLen];
                boolean compressed = line.indexOf("LC=") != -1; //$NON-NLS-1$

                if (compressed) {
                    s = line.indexOf("LC=") + 3; //$NON-NLS-1$
                    e = line.indexOf(" ", s); //$NON-NLS-1$
                    int compressLen = Integer.parseInt(line.substring(s, e));

                    while (in.read(buffer) == 1) {
                        if (buffer[0] == 0x78) {
                            break;
                        }
                    }
                    if (buffer[0] != 0x78) {
                        break;
                    }

                    int readed = 1, len;
                    byte[] input = new byte[compressLen];
                    input[0] = buffer[0];
                    do {
                        len = in.read(input, readed, input.length - readed);
                        readed += len;
                    } while (len > 0 && readed < input.length);

                    Inflater infl = new Inflater();
                    infl.setInput(input, 0, readed);
                    infl.inflate(output);
                    infl.end();
                } else {
                    in.read(buffer);

                    int readed = 0, len;
                    do {
                        len = in.read(output, readed, output.length - readed);
                        readed += len;
                    } while (len > 0 && readed < output.length);
                }

                for (int i = 0; i < output.length; i += 28) {
                    Date date = getDate(output, i);
                    cal.setTime(date);
                    int time = cal.get(Calendar.HOUR_OF_DAY) * 60 + cal.get(Calendar.MINUTE);
                    if (time >= startTime && time <= endTime) {
                        float low = getFloat(output, i + 8);
                        float high = getFloat(output, i + 12);
                        float close = getFloat(output, i + 16);
                        float volume = getFloat(output, i + 20);
                        float open = getFloat(output, i + 24);
                        list.add(new OHLC(date, (double) open, (double) high, (double) low, (double) close,
                                (long) volume));
                    }
                }
            }
        }
    }
}

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From source file:aarddict.Volume.java

static String decompressZlib(byte[] bytes) throws IOException, DataFormatException {
    Inflater decompressor = new Inflater();
    decompressor.setInput(bytes);//from   w  w w. j av  a 2 s . com
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    try {
        byte[] buf = new byte[1024];
        while (!decompressor.finished()) {
            int count = decompressor.inflate(buf);
            out.write(buf, 0, count);
        }
    } finally {
        out.close();
    }
    return utf8(out.toByteArray());
}

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From source file:org.apache.xmlgraphics.image.loader.impl.imageio.ImageLoaderImageIO.java

private ICC_Profile tryToExctractICCProfileFromPNGMetadataNode(Element pngNode) {
    ICC_Profile iccProf = null;//from w w w . ja  va 2s .co  m
    Element iccpNode = ImageIOUtil.getChild(pngNode, "iCCP");
    if (iccpNode instanceof IIOMetadataNode) {
        IIOMetadataNode imn = (IIOMetadataNode) iccpNode;
        byte[] prof = (byte[]) imn.getUserObject();
        String comp = imn.getAttribute("compressionMethod");
        if ("deflate".equalsIgnoreCase(comp)) {
            Inflater decompresser = new Inflater();
            decompresser.setInput(prof);
            byte[] result = new byte[100];
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            boolean failed = false;
            while (!decompresser.finished() && !failed) {
                try {
                    int resultLength = decompresser.inflate(result);
                    bos.write(result, 0, resultLength);
                    if (resultLength == 0) {
                        // this means more data or an external dictionary is
                        // needed. Both of which are not available, so we
                        // fail.
                        log.debug("Failed to deflate ICC Profile");
                        failed = true;
                    }
                } catch (DataFormatException e) {
                    log.debug("Failed to deflate ICC Profile", e);
                    failed = true;
                }
            }
            decompresser.end();
            try {
                iccProf = ICC_Profile.getInstance(bos.toByteArray());
            } catch (IllegalArgumentException e) {
                log.debug("Failed to interpret embedded ICC Profile", e);
                iccProf = null;
            }
        }
    }
    return iccProf;
}

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From source file:r.base.Connections.java

public static byte[] decompress1(byte buffer[]) throws IOException, DataFormatException {
    DataInputStream in = new DataInputStream(new ByteArrayInputStream(buffer));
    int outLength = in.readInt();

    Inflater inflater = new Inflater();
    inflater.setInput(buffer, 4, buffer.length - 4);

    byte[] result = new byte[outLength];
    inflater.inflate(result);// ww w .  j  a  v  a  2 s .c om
    inflater.end();

    return result;
}

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From source file:de.tudarmstadt.ukp.wikipedia.revisionmachine.difftool.data.codec.RevisionDecoder.java

/**
 * Inflates the zipped input.//from   w w  w  .  jav  a 2s .  c om
 * 
 * @param zipinput
 *            zipped input
 * @param start
 *            start position
 * @return inflated input
 */
private byte[] inflateInput(final byte[] zipinput, final int start) {
    ByteArrayOutputStream stream;
    try {
        byte[] compressedInput = zipinput;
        Inflater decompresser = new Inflater();
        decompresser.setInput(compressedInput, start, compressedInput.length - start);

        byte[] output = new byte[1000];
        stream = new ByteArrayOutputStream();

        int cLength;
        do {
            cLength = decompresser.inflate(output);
            stream.write(output, 0, cLength);
        } while (cLength == 1000);

    } catch (DataFormatException e) {
        throw new RuntimeException(e);
    }

    return stream.toByteArray();
}

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From source file:com.nary.Debug.java

public static Object loadClass(InputStream _inStream, boolean _uncompress) {
    ObjectInputStream ois;/*from w ww.j av a  2  s  . c om*/
    try {
        if (_uncompress) {
            // we need to get the input as a byte [] so we can decompress (inflate) it.  
            Inflater inflater = new Inflater();
            ByteArrayOutputStream bos;
            int bytesAvail = _inStream.available();
            if (bytesAvail > 0) {
                bos = new ByteArrayOutputStream(bytesAvail);
            } else {
                bos = new ByteArrayOutputStream();
            }

            byte[] buffer = new byte[1024];
            int read = _inStream.read(buffer);
            while (read > 0) {
                bos.write(buffer, 0, read);
                read = _inStream.read(buffer);
            }
            bos.flush();
            inflater.setInput(bos.toByteArray());

            bos.reset();
            buffer = new byte[1024];
            int inflated = inflater.inflate(buffer);
            while (inflated > 0) {
                bos.write(buffer, 0, inflated);
                inflated = inflater.inflate(buffer);
            }

            bos.flush();
            ByteArrayInputStream bis = new ByteArrayInputStream(bos.toByteArray());

            ois = new ObjectInputStream(bis);

        } else {
            ois = new ObjectInputStream(_inStream);
        }

        return ois.readObject();
    } catch (Exception E) {
        return null;
    } finally {
        try {
            _inStream.close();
        } catch (Exception ioe) {
        }
    }
}

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From source file:org.apache.oozie.workflow.lite.LiteWorkflowAppParser.java

/**
 * Read the GlobalSectionData from Base64 string.
 * @param globalStr//  w  ww.j  a v  a2  s  . c  om
 * @return GlobalSectionData
 * @throws WorkflowException
 */
private GlobalSectionData getGlobalFromString(String globalStr) throws WorkflowException {
    GlobalSectionData globalSectionData = new GlobalSectionData();
    try {
        byte[] data = Base64.decodeBase64(globalStr);
        Inflater inflater = new Inflater();
        DataInputStream ois = new DataInputStream(
                new InflaterInputStream(new ByteArrayInputStream(data), inflater));
        globalSectionData.readFields(ois);
        ois.close();
    } catch (Exception ex) {
        throw new WorkflowException(ErrorCode.E0700, "Error while processing global section conf");
    }
    return globalSectionData;
}

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From source file:org.apache.geode.management.internal.cli.CliUtil.java

public static DeflaterInflaterData uncompressBytes(byte[] output, int compressedDataLength)
        throws DataFormatException {
    Inflater decompresser = new Inflater();
    decompresser.setInput(output, 0, compressedDataLength);
    byte[] buffer = new byte[512];
    byte[] result = new byte[0];
    int bytesRead;
    while (!decompresser.needsInput()) {
        bytesRead = decompresser.inflate(buffer);
        byte[] newResult = new byte[result.length + bytesRead];
        System.arraycopy(result, 0, newResult, 0, result.length);
        System.arraycopy(buffer, 0, newResult, result.length, bytesRead);
        result = newResult;// w w w.j  av  a  2s . c o m
    }
    decompresser.end();

    return new DeflaterInflaterData(result.length, result);
}

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From source file:nl.nn.adapterframework.util.Misc.java

public static byte[] decompress(byte[] input) throws DataFormatException, IOException {
    // Create the decompressor and give it the data to compress
    Inflater decompressor = new Inflater();
    decompressor.setInput(input);/*from w  w  w.j  ava2  s  .co m*/

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

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

    // Get the decompressed data
    return bos.toByteArray();
}

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