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

public static void main(String[] argv) throws Exception {
    String source = "s.gzip";
    GZIPInputStream in = new GZIPInputStream(new FileInputStream(source));
    String target = "outfile";
    OutputStream out = new FileOutputStream(target);
    byte[] buf = new byte[1024];
    int len;/*from w w w  . ja  v  a 2  s.  c  o  m*/
    while ((len = in.read(buf)) > 0) {
        out.write(buf, 0, len);
    }
    in.close();
    out.close();
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    String inFilename = "infile.gzip";
    GZIPInputStream in = new GZIPInputStream(new FileInputStream(inFilename));

    String outFilename = "outfile";
    OutputStream out = new FileOutputStream(outFilename);

    byte[] buf = new byte[1024];
    int len;//from w  w w .j ava2 s . com
    while ((len = in.read(buf)) > 0) {
        out.write(buf, 0, len);
    }

    in.close();
    out.close();
}

From source file:Main.java

/**
 * uncompress the xmlByteArray//from   w w w .j av  a2 s . com
 */
public static byte[] uncompressByteArray(byte[] xmlByteArray) throws IOException {
    byte[] tmp = new byte[2048];
    int byteCount = 0;
    ByteArrayOutputStream uncompressedData = new ByteArrayOutputStream();
    GZIPInputStream gzipIS = new GZIPInputStream(new ByteArrayInputStream(xmlByteArray));

    while ((byteCount = gzipIS.read(tmp)) != -1) {
        uncompressedData.write(tmp, 0, byteCount);
    }

    return uncompressedData.toByteArray();
}

From source file:Main.java

public static final byte[] uncompress(final byte[] bytes) {
    if (bytes == null) {
        throw new NullPointerException("byte[] is NULL !");
    }//  www . j a  v a 2 s  . c o  m
    ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
    ByteArrayOutputStream bos = new ByteArrayOutputStream(8192);
    byte[] buffer = new byte[bytes.length];
    int length;
    try {
        GZIPInputStream gis = new GZIPInputStream(bais);
        while ((length = gis.read(buffer)) != -1) {
            bos.write(buffer, 0, length);
        }
        byte[] moreBytes = bos.toByteArray();
        bos.close();
        bais.close();
        gis.close();
        bos = null;
        bais = null;
        gis = null;
        return moreBytes;
    } catch (IOException e) {
        return null;
    }
}

From source file:Main.java

public static String uncompress(InputStream inputStream) throws IOException {
    if (inputStream == null) {
        return null;
    }/*from ww  w.  j  a v a 2 s  . c  o  m*/
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    GZIPInputStream gunzip = new GZIPInputStream(inputStream);
    byte[] buffer = new byte[256];
    int n;
    while ((n = gunzip.read(buffer)) >= 0) {
        out.write(buffer, 0, n);
    }
    return out.toString();
}

From source file:Main.java

public static byte[] unzip(byte[] output) {
    if (output == null || output.length == 0) {
        return output;
    }//from   ww  w.j  a va  2 s .  c o  m
    try {
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        ByteArrayInputStream in = new ByteArrayInputStream(output);
        GZIPInputStream gunzip = new GZIPInputStream(in);
        byte[] buffer = new byte[BUFFER_SIZE];
        int ret;
        while ((ret = gunzip.read(buffer)) >= 0) {
            out.write(buffer, 0, ret);
        }
        gunzip.close();
        return out.toByteArray();
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
}

From source file:Main.java

public static String decompress(String hexString) throws UnsupportedEncodingException {
    final byte[] byteArray = new byte[hexString.length() / 2];
    int k = 0;/*www  . j  a  v  a 2  s . c o  m*/
    for (int i = 0; i < byteArray.length; i++) {
        byte high = (byte) (Character.digit(hexString.charAt(k), 16) & 0xff);
        byte low = (byte) (Character.digit(hexString.charAt(k + 1), 16) & 0xff);
        byteArray[i] = (byte) (high << 4 | low);
        k += 2;
    }

    ByteArrayOutputStream out = new ByteArrayOutputStream();
    ByteArrayInputStream in = new ByteArrayInputStream(byteArray);

    try {
        GZIPInputStream gunzip = new GZIPInputStream(in);
        byte[] buffer = new byte[256];
        int n;
        while ((n = gunzip.read(buffer)) >= 0) {
            out.write(buffer, 0, n);
        }
    } catch (IOException e) {
        e.printStackTrace();
    }

    return out.toString();
}

From source file:Main.java

protected static ByteArrayOutputStream inflate(final FileInputStream pInputStream) throws IOException {
    final ByteArrayOutputStream uncompressed = new ByteArrayOutputStream(ONE_MB);
    final GZIPInputStream zin = new GZIPInputStream(pInputStream);

    int read;/*from   www .j  a va 2  s .c  o  m*/
    final byte[] buf = new byte[ONE_MB];
    while ((read = zin.read(buf)) != -1) {
        uncompressed.write(buf, 0, read);
    }

    return uncompressed;
}

From source file:ByteUtils.java

public static byte[] unpackRaw(byte[] b) throws IOException {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    ByteArrayInputStream bais = new ByteArrayInputStream(b);

    GZIPInputStream zis = new GZIPInputStream(bais);
    byte[] tmpBuffer = new byte[256];
    int n;/*w w  w .  ja v  a  2  s  .  co  m*/
    while ((n = zis.read(tmpBuffer)) >= 0)
        baos.write(tmpBuffer, 0, n);
    zis.close();

    return baos.toByteArray();
}

From source file:Main.java

public static byte[] decompressGzip(byte[] compressed) throws IOException {
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    ByteArrayInputStream bis = new ByteArrayInputStream(compressed);
    GZIPInputStream gis = new GZIPInputStream(bis);
    try {/*  ww  w .  j  av  a  2 s  .c  o  m*/
        byte[] buffer = new byte[READ_BUFFER_SIZE];
        int read = 0;
        while ((read = gis.read(buffer)) != -1) {
            bos.write(buffer, 0, read);
        }
    } finally {
        gis.close();
    }

    return bos.toByteArray();
}