Example usage for java.util.zip GZIPInputStream read

Introduction

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

Prototype

public int read(byte[] buf, int off, int len) throws IOException 

Source Link

Document

Reads uncompressed data into an array of bytes.

Usage

From source file:org.ofbiz.webapp.event.RestEventHandler.java

/** 
* ? /*from  w  w  w .ja va  2  s  .  c  om*/
*  
* @param is 
* @param os 
* @throws Exception 
*/
public static void decompress(InputStream is, OutputStream os) throws Exception {

    GZIPInputStream gis = new GZIPInputStream(is);

    int count;
    byte data[] = new byte[BUFFER];
    while ((count = gis.read(data, 0, BUFFER)) != -1) {
        os.write(data, 0, count);
    }

    gis.close();
}

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From source file:com.krawler.common.util.ByteUtil.java

/**
 * uncompress the supplied data using GZIPInputStream and return the
 * uncompressed data.//w  ww .  j  av  a  2 s  . co  m
 * 
 * @param data
 *            data to uncompress
 * @return uncompressed data
 */
public static byte[] uncompress(byte[] data) throws IOException {
    // TODO: optimize, this makes my head hurt
    ByteArrayOutputStream baos = null;
    ByteArrayInputStream bais = null;
    GZIPInputStream gis = null;
    try {
        int estimatedResultSize = data.length * 3;
        baos = new ByteArrayOutputStream(estimatedResultSize);
        bais = new ByteArrayInputStream(data);
        byte[] buffer = new byte[8192];
        gis = new GZIPInputStream(bais);

        int numRead;
        while ((numRead = gis.read(buffer, 0, buffer.length)) != -1) {
            baos.write(buffer, 0, numRead);
        }
        return baos.toByteArray();
    } finally {
        if (gis != null)
            gis.close();
        else if (bais != null)
            bais.close();
        if (baos != null)
            baos.close();
    }
}

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

public static byte[] gunzip(byte[] input) throws DataFormatException, IOException {

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

    // Decompress the data
    byte[] buf = new byte[1024];
    while (gz.available() > 0) {
        int count = gz.read(buf, 0, 1024);
        if (count > 0) {
            bos.write(buf, 0, count);//w  ww.j av  a 2  s  . c  o m
        }
    }
    bos.close();

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

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From source file:org.exist.xquery.modules.compression.UnGZipFunction.java

@Override
public Sequence eval(Sequence[] args, Sequence contextSequence) throws XPathException {
    // is there some data to unGZip?
    if (args[0].isEmpty())
        return Sequence.EMPTY_SEQUENCE;

    BinaryValue bin = (BinaryValue) args[0].itemAt(0);
    ByteArrayOutputStream baos = new ByteArrayOutputStream();

    // ungzip the data
    try {/* w  w  w  . ja  v  a2 s  . co  m*/
        GZIPInputStream gzis = new GZIPInputStream(bin.getInputStream());
        int size;
        byte[] b = new byte[4096];
        while ((size = gzis.read(b, 0, 4096)) != -1) {
            baos.write(b, 0, size);
        }
        baos.flush();
        baos.close();
        return BinaryValueFromInputStream.getInstance(context, new Base64BinaryValueType(),
                new ByteArrayInputStream(baos.toByteArray()));
    } catch (IOException ioe) {
        throw new XPathException(this, ioe.getMessage());
    }
}

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From source file:org.opensextant.util.FileUtility.java

/**
 *
 * @param filepath//  w  ww .  j  a  v a  2 s.c  o  m
 *            path to file
 * @return text buffer, UTF-8 decoded
 * @throws IOException
 *             on error
 */
public static String readGzipFile(String filepath) throws IOException {
    if (filepath == null) {
        return null;
    }

    final FileInputStream instream = new FileInputStream(filepath);
    final GZIPInputStream gzin = new GZIPInputStream(new BufferedInputStream(instream), ioBufferSize);

    final byte[] inputBytes = new byte[ioBufferSize];
    final StringBuilder buf = new StringBuilder();

    int readcount = 0;
    while ((readcount = gzin.read(inputBytes, 0, ioBufferSize)) != -1) {
        buf.append(new String(inputBytes, 0, readcount, default_encoding));
    }
    instream.close();
    gzin.close();

    return buf.toString();

}

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From source file:org.apache.hadoop.hbase.rest.TestGzipFilter.java

@Test
public void testGzipFilter() throws Exception {
    String path = "/" + TABLE + "/" + ROW_1 + "/" + COLUMN_1;

    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    GZIPOutputStream os = new GZIPOutputStream(bos);
    os.write(VALUE_1);//from w  ww. j av a 2 s  .c  o m
    os.close();
    byte[] value_1_gzip = bos.toByteArray();

    // input side filter

    Header[] headers = new Header[2];
    headers[0] = new Header("Content-Type", Constants.MIMETYPE_BINARY);
    headers[1] = new Header("Content-Encoding", "gzip");
    Response response = client.put(path, headers, value_1_gzip);
    assertEquals(response.getCode(), 200);

    HTable table = new HTable(TEST_UTIL.getConfiguration(), TABLE);
    Get get = new Get(Bytes.toBytes(ROW_1));
    get.addColumn(Bytes.toBytes(CFA), Bytes.toBytes("1"));
    Result result = table.get(get);
    byte[] value = result.getValue(Bytes.toBytes(CFA), Bytes.toBytes("1"));
    assertNotNull(value);
    assertTrue(Bytes.equals(value, VALUE_1));

    // output side filter

    headers[0] = new Header("Accept", Constants.MIMETYPE_BINARY);
    headers[1] = new Header("Accept-Encoding", "gzip");
    response = client.get(path, headers);
    assertEquals(response.getCode(), 200);
    ByteArrayInputStream bis = new ByteArrayInputStream(response.getBody());
    GZIPInputStream is = new GZIPInputStream(bis);
    value = new byte[VALUE_1.length];
    is.read(value, 0, VALUE_1.length);
    assertTrue(Bytes.equals(value, VALUE_1));
    is.close();
    table.close();

    testScannerResultCodes();
}

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From source file:android.tether.system.WebserviceTask.java

public boolean downloadBluetoothModule(String downloadFileUrl, String destinationFilename) {
    if (android.os.Environment.getExternalStorageState()
            .equals(android.os.Environment.MEDIA_MOUNTED) == false) {
        return false;
    }//from w  ww.ja v  a2  s.c  o m
    File bluetoothDir = new File(BLUETOOTH_FILEPATH);
    if (bluetoothDir.exists() == false) {
        bluetoothDir.mkdirs();
    }
    if (this.downloadFile(downloadFileUrl, "", destinationFilename) == true) {
        try {
            FileOutputStream out = new FileOutputStream(new File(destinationFilename.replace(".gz", "")));
            FileInputStream fis = new FileInputStream(destinationFilename);
            GZIPInputStream gzin = new GZIPInputStream(new BufferedInputStream(fis));
            int count;
            byte buf[] = new byte[8192];
            while ((count = gzin.read(buf, 0, 8192)) != -1) {
                //System.out.write(x);
                out.write(buf, 0, count);
            }
            out.flush();
            out.close();
            gzin.close();
            File inputFile = new File(destinationFilename);
            inputFile.delete();
        } catch (IOException e) {
            return false;
        }
        return true;
    } else
        return false;
}

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From source file:net.yacy.kelondro.util.FileUtils.java

/**
 * This function determines if a byte array is gzip compressed and uncompress it
 *
 * @param source properly gzip compressed byte array
 * @return uncompressed byte array//from  ww w .  j  a v  a  2s .c o m
 * @throws IOException
 */
public static byte[] uncompressGZipArray(byte[] source) throws IOException {
    if (source == null) {
        return null;
    }

    // support of gzipped data (requested by roland)
    /* "Bitwise OR of signed byte value
     *
     * [...] Values loaded from a byte array are sign extended to 32 bits before
     * any any bitwise operations are performed on the value. Thus, if b[0]
     * contains the value 0xff, and x is initially 0, then the code ((x <<
     * 8) | b[0]) will sign extend 0xff to get 0xffffffff, and thus give the
     * value 0xffffffff as the result. [...]" findbugs description of BIT_IOR_OF_SIGNED_BYTE
     */
    if ((source.length > 1) && (((source[1] << 8) | (source[0] & 0xff)) == GZIPInputStream.GZIP_MAGIC)) {
        System.out.println("DEBUG: uncompressGZipArray - uncompressing source");
        try {
            final ByteArrayInputStream byteInput = new ByteArrayInputStream(source);
            final ByteArrayOutputStream byteOutput = new ByteArrayOutputStream(source.length / 5);
            final GZIPInputStream zippedContent = new GZIPInputStream(byteInput);
            final byte[] data = new byte[1024];
            int read = 0;

            // reading gzip file and store it uncompressed
            while ((read = zippedContent.read(data, 0, 1024)) != -1) {
                byteOutput.write(data, 0, read);
            }
            zippedContent.close();
            byteOutput.close();

            source = byteOutput.toByteArray();
        } catch (final Exception e) {
            if (!e.getMessage().equals("Not in GZIP format")) {
                throw new IOException(e.getMessage());
            }
        }
    }

    return source;
}

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From source file:net.yacy.document.parser.gzipParser.java

@Override
public Document[] parse(final DigestURL location, final String mimeType, final String charset,
        final VocabularyScraper scraper, final int timezoneOffset, final InputStream source)
        throws Parser.Failure, InterruptedException {

    File tempFile = null;/* w  w  w .  j  a  v a  2  s  . co m*/
    Document maindoc = null;
    try {
        int read = 0;
        final byte[] data = new byte[1024];

        final GZIPInputStream zippedContent = new GZIPInputStream(source);

        tempFile = File.createTempFile("gunzip", "tmp");

        // creating a temp file to store the uncompressed data
        final FileOutputStream out = new FileOutputStream(tempFile);

        // reading gzip file and store it uncompressed
        while ((read = zippedContent.read(data, 0, 1024)) != -1) {
            out.write(data, 0, read);
        }
        zippedContent.close();
        out.close();
        final String filename = location.getFileName();
        // create maindoc for this gzip container, register with supplied url & mime
        maindoc = new Document(location, mimeType, charset, this, null, null,
                AbstractParser.singleList(
                        filename.isEmpty() ? location.toTokens() : MultiProtocolURL.unescape(filename)), // title
                null, null, null, null, 0.0d, 0.0d, (Object) null, null, null, null, false, new Date());
        // creating a new parser class to parse the unzipped content
        final String contentfilename = GzipUtils.getUncompressedFilename(location.getFileName());
        final String mime = TextParser.mimeOf(DigestURL.getFileExtension(contentfilename));
        Document[] docs = TextParser.parseSource(location, mime, null, scraper, timezoneOffset, 999, tempFile);
        if (docs != null)
            maindoc.addSubDocuments(docs);
    } catch (final Exception e) {
        if (e instanceof InterruptedException)
            throw (InterruptedException) e;
        if (e instanceof Parser.Failure)
            throw (Parser.Failure) e;

        throw new Parser.Failure("Unexpected error while parsing gzip file. " + e.getMessage(), location);
    } finally {
        if (tempFile != null)
            FileUtils.deletedelete(tempFile);
    }
    return maindoc == null ? null : new Document[] { maindoc };
}

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