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 b[]) throws IOException

Source Link

Document

Reads up to b.length bytes of data from this input stream into an array of bytes.

Usage

From source file:Main.java

protected static ByteArrayOutputStream inflate(final ByteArrayOutputStream pOutCompressed) throws IOException {
    final ByteArrayOutputStream uncompressed = new ByteArrayOutputStream(ONE_MB);
    final GZIPInputStream zin = new GZIPInputStream(new ByteArrayInputStream(pOutCompressed.toByteArray()));

    int read;//  www  .  java 2 s .c om
    final byte[] buf = new byte[ONE_MB];
    while ((read = zin.read(buf)) != -1) {
        uncompressed.write(buf, 0, read);
    }

    return uncompressed;
}

From source file:Main.java

public static void unzip(InputStream is, OutputStream os) {
    GZIPInputStream gzip = null;
    try {//  w  w w  . j  ava  2 s. co m
        gzip = new GZIPInputStream(is);
        byte[] buf = new byte[1024];
        int len;
        while ((len = gzip.read(buf)) != -1) {
            os.write(buf, 0, len);
        }
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        closeIO(gzip, os);
    }
}

From source file:Main.java

public static void unzip(InputStream is, OutputStream os) {
    GZIPInputStream gzip = null;
    try {//from   w w w  . ja  v a2 s  . c  o m
        gzip = new GZIPInputStream(is);
        byte[] buf = new byte[1024];
        int len;
        while ((len = gzip.read(buf)) != -1) {
            os.write(buf, 0, len);
        }
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        closeIO(gzip);
        closeIO(os);
    }
}

From source file:Main.java

public static byte[] decompressInGzip(byte[] compressData, int offset, int length) throws Exception {

    ByteArrayInputStream bis = new ByteArrayInputStream(compressData, offset, length);
    GZIPInputStream gzipInStream = new GZIPInputStream(bis);

    ByteArrayOutputStream bos = new ByteArrayOutputStream();

    int count;//from   www  .  j a v a  2 s .  co  m
    byte[] buf = new byte[1024];
    while ((count = gzipInStream.read(buf)) > 0) {
        bos.write(buf, 0, count);
    }
    gzipInStream.close();

    byte[] originalData = bos.toByteArray();
    bos.close();

    return originalData;
}

From source file:Main.java

private static void decompressGzipFile(String gzipFile) {
    try {//from w ww.j av  a2  s.c  o m
        File newFile = new File(Environment.getExternalStorageDirectory() + File.separator + "FlockLoad");
        FileInputStream fis = new FileInputStream(gzipFile);
        GZIPInputStream gis = new GZIPInputStream(fis);
        FileOutputStream fos = new FileOutputStream(newFile);
        byte[] buffer = new byte[1024];
        int len;
        while ((len = gis.read(buffer)) != -1) {
            fos.write(buffer, 0, len);
        }
        //close resources
        fos.close();
        gis.close();
    } catch (IOException e) {
        e.printStackTrace();
    }

}

From source file:Main.java

public static final byte[] unCompress(byte[] buf) throws IOException {
    GZIPInputStream gzi = new GZIPInputStream(new ByteArrayInputStream(buf));
    ByteArrayOutputStream bos = new ByteArrayOutputStream(buf.length);

    int count;//w  w  w  . j  a va  2 s .  c om
    byte[] tmp = new byte[2048];
    while ((count = gzi.read(tmp)) != -1) {
        bos.write(tmp, 0, count);
    }

    // store uncompressed back to buffer      
    gzi.close();
    return bos.toByteArray();
}

From source file:Main.java

/**
 * decompress a gzip byte array, using a default buffer length of 1024
 * <p>/*  w w w .jav a2s . co m*/
 * @param compressedByteArray gzip-compressed byte array
 * @param bufferlength size of the buffer in bytes
 * @return decompressed byte array
 * @throws IOException thrown if there was a failure to construct the GzipInputStream
 */
public static byte[] decompressGzipByteArray(byte[] compressedByteArray, int bufferlength) throws IOException {
    ByteArrayOutputStream uncompressedStream = new ByteArrayOutputStream();

    GZIPInputStream compressedStream = new GZIPInputStream(new ByteArrayInputStream(compressedByteArray));

    byte[] buffer = new byte[bufferlength];

    int index = -1;

    while ((index = compressedStream.read(buffer)) != -1) {
        uncompressedStream.write(buffer, 0, index);
    }

    return uncompressedStream.toByteArray();
}

From source file:GZIPUtils.java

/**
 * Returns an gunzipped copy of the input array.  
 * @throws IOException if the input cannot be properly decompressed
 *///from w  ww  .j a va 2s .  c  o m
public static final byte[] unzip(byte[] in) throws IOException {
    // decompress using GZIPInputStream 
    ByteArrayOutputStream outStream = new ByteArrayOutputStream(EXPECTED_COMPRESSION_RATIO * in.length);

    GZIPInputStream inStream = new GZIPInputStream(new ByteArrayInputStream(in));

    byte[] buf = new byte[BUF_SIZE];
    while (true) {
        int size = inStream.read(buf);
        if (size <= 0)
            break;
        outStream.write(buf, 0, size);
    }
    outStream.close();

    return outStream.toByteArray();
}

From source file:com.spstudio.common.image.ImageUtils.java

public static byte[] uncompress(byte[] bytes) {
    if (bytes == null || bytes.length == 0) {
        return null;
    }/*from  w w w.  ja va  2s.co  m*/
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    ByteArrayInputStream in = new ByteArrayInputStream(bytes);
    try {
        GZIPInputStream ungzip = new GZIPInputStream(in);
        byte[] buffer = new byte[256];
        int n;
        while ((n = ungzip.read(buffer)) >= 0) {
            out.write(buffer, 0, n);
        }
    } catch (IOException e) {
        logger.error("gzip uncompress error.", e);
    }

    return out.toByteArray();
}

From source file:com.ery.ertc.estorm.util.GZIPUtils.java

/**
 * Returns an gunzipped copy of the input array.
 * /*from   w w  w  .  j a  va 2 s.  co  m*/
 * @throws IOException
 *             if the input cannot be properly decompressed
 */
public static final byte[] unzip(byte[] in) throws IOException {
    // decompress using GZIPInputStream
    ByteArrayOutputStream outStream = new ByteArrayOutputStream(EXPECTED_COMPRESSION_RATIO * in.length);

    GZIPInputStream inStream = new GZIPInputStream(new ByteArrayInputStream(in));

    byte[] buf = new byte[BUF_SIZE];
    while (true) {
        int size = inStream.read(buf);
        if (size <= 0)
            break;
        outStream.write(buf, 0, size);
    }
    outStream.close();

    return outStream.toByteArray();
}