Example usage for java.util.zip GZIPOutputStream GZIPOutputStream

Introduction

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

Prototype

public GZIPOutputStream(OutputStream out) throws IOException

Source Link

Document

Creates a new output stream with a default buffer size.

Usage

From source file:Main.java

/**
 * TODO check faster and more stable implementations.
 *
 * @param source_filepath/*w  w  w .j ava  2s. c om*/
 * @param destinaton_zip_filepath
 * @throws IOException
 */
public static void gzipFile(final String source_filepath, final String destinaton_zip_filepath)
        throws IOException {
    byte[] buffer = new byte[4096];
    try (FileOutputStream fileOutputStream = new FileOutputStream(destinaton_zip_filepath)) {
        try (GZIPOutputStream gzipOutputStream = new GZIPOutputStream(fileOutputStream)) {
            try (FileInputStream fileInput = new FileInputStream(source_filepath)) {
                int bytes_read;
                while ((bytes_read = fileInput.read(buffer)) > 0) {
                    gzipOutputStream.write(buffer, 0, bytes_read);
                }
            }
            gzipOutputStream.finish();
        }
    } catch (IOException ex) {
        throw ex;
    }
}

From source file:Main.java

/**
 * Compresses a GZIP file./*from ww w.j a  v a2s.co  m*/
 * @param bytes The uncompressed bytes.
 * @return The compressed bytes.
 * @throws IOException if an I/O error occurs.
 */
public static byte[] gzip(byte[] bytes) throws IOException {
    /* create the streams */
    try (InputStream is = new ByteArrayInputStream(bytes)) {
        ByteArrayOutputStream bout = new ByteArrayOutputStream();
        try (OutputStream os = new GZIPOutputStream(bout)) {
            /* copy data between the streams */
            byte[] buf = new byte[4096];
            int len;
            while ((len = is.read(buf, 0, buf.length)) != -1) {
                os.write(buf, 0, len);
            }
        }

        /* return the compressed bytes */
        return bout.toByteArray();
    }
}

From source file:Main.java

/**
 * Compresses a GZIP file./*w  w w .j a  va  2 s.c  om*/
 * 
 * @param bytes
 *            The uncompressed bytes.
 * @return The compressed bytes.
 * @throws IOException
 *             if an I/O error occurs.
 */
public static byte[] gzip(byte[] bytes) throws IOException {
    /* create the streams */
    InputStream is = new ByteArrayInputStream(bytes);
    try {
        ByteArrayOutputStream bout = new ByteArrayOutputStream();
        OutputStream os = new GZIPOutputStream(bout);
        try {
            /* copy data between the streams */
            byte[] buf = new byte[4096];
            int len = 0;
            while ((len = is.read(buf, 0, buf.length)) != -1) {
                os.write(buf, 0, len);
            }
        } finally {
            os.close();
        }

        /* return the compressed bytes */
        return bout.toByteArray();
    } finally {
        is.close();
    }
}

From source file:Main.java

static public byte[] gzip(byte src[], byte default_value[]) {
    try {/*from   w  ww. ja  v  a 2  s  .com*/
        if (src == null)
            return default_value;

        ByteArrayOutputStream out_raw = new ByteArrayOutputStream();
        GZIPOutputStream out = new GZIPOutputStream(out_raw);

        ByteArrayInputStream in = new ByteArrayInputStream(src);

        IOUtils.copy(in, out);

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

        return out_raw.toByteArray();
    } catch (Exception e) {
        return default_value;
    }
}

From source file:Main.java

public static void zip(InputStream is, OutputStream os) {
    GZIPOutputStream gzip = null;
    try {/*from w  w  w. ja  v a 2 s.co m*/
        gzip = new GZIPOutputStream(os);
        byte[] buf = new byte[1024];
        int len;
        while ((len = is.read(buf)) != -1) {
            gzip.write(buf, 0, len);
            gzip.flush();
        }
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        closeIO(is, gzip);
    }
}

From source file:Main.java

public static void zip(InputStream is, OutputStream os) {
    GZIPOutputStream gzip = null;
    try {/*from w ww  . jav  a 2s  .com*/
        gzip = new GZIPOutputStream(os);
        byte[] buf = new byte[1024];
        int len;
        while ((len = is.read(buf)) != -1) {
            gzip.write(buf, 0, len);
            gzip.flush();
        }
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        closeIO(is);
        closeIO(gzip);
    }
}

From source file:Main.java

public static byte[] compress(byte[] content) throws IOException {
    ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
    byte[] byteMe = null;
    try {/*from w ww .ja  v a 2  s  .c o  m*/
        GZIPOutputStream gzipOutputStream = new GZIPOutputStream(byteOut);
        gzipOutputStream.write(content);
        gzipOutputStream.close();
        byteMe = byteOut.toByteArray();
    } finally {
        byteOut.close();
    }
    return byteMe;
}

From source file:Main.java

public static byte[] doZip(byte[] data) throws IOException {
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    java.util.zip.GZIPOutputStream gout = new GZIPOutputStream(out);
    gout.write(data);/*from  w ww  . j a  va 2 s.  co m*/
    gout.close();
    return out.toByteArray();
}

From source file:Main.java

static byte[] compress(byte[] decompressed) throws IOException {
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    GZIPOutputStream gzip = new GZIPOutputStream(bos);
    gzip.write(decompressed);/*from www  . j a v a2 s .  co m*/
    gzip.flush();
    gzip.close();
    bos.flush();
    bos.close();
    return bos.toByteArray();
}

From source file:Main.java

public static void writeGZipCompressedObject(Object o, OutputStream out) throws IOException {
    GZIPOutputStream gos = new GZIPOutputStream(out);
    ObjectOutputStream oos = new ObjectOutputStream(gos);
    oos.writeObject(o);/*  w w w . j  av a 2 s .  c  o m*/
    oos.flush();
    gos.finish();
}