Example usage for org.apache.commons.compress.bzip2 CBZip2OutputStream CBZip2OutputStream

Introduction

In this page you can find the example usage for org.apache.commons.compress.bzip2 CBZip2OutputStream CBZip2OutputStream.

Prototype

public CBZip2OutputStream(final OutputStream output) throws IOException 

Source Link

Usage

From source file:ch.rgw.compress.CompEx.java

public static byte[] CompressBZ2(InputStream in) throws Exception {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    byte[] buf = new byte[8192];
    baos.write(buf, 0, 4); // Lnge des Originalstroms
    CBZip2OutputStream bzo = new CBZip2OutputStream(baos);
    int l;//from ww w .ja  va 2s  .c o  m
    int total = 0;
    ;
    while ((l = in.read(buf, 0, buf.length)) != -1) {
        bzo.write(buf, 0, l);
        total += l;
    }
    bzo.close();
    byte[] ret = baos.toByteArray();
    // Die hchstwertigen 3 Bit als Typmarker setzen
    total &= 0x1fffffff;
    total |= BZIP2;
    BinConverter.intToByteArray(total, ret, 0);
    return ret;
}

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From source file:net.contrapunctus.rngzip.io.RNGZSettings.java

/**
 * Filter an output stream through a compressor, as specified by
 * cm.  That is, if cm is <code>GZ</code>, this method will
 * return <code>new GZIPOutputStream(out)</code>.
 *///from w  ww.j a v a2 s .  c om
public static OutputStream wrapOutput(OutputStream out, DataCompression cm) throws IOException {
    switch (cm) {
    case NONE:
        break;
    case GZ:
        out = new GZIPOutputStream(out);
        break;
    case BZ2:
        out = new CBZip2OutputStream(out);
        break;
    case LZMA:
        out = new LzmaOutputStream(out);
        break;
    case PPM:
        out = new ArithCodeOutputStream(out, new PPMModel(PPM_SMALL_LENGTH));
        break;
    case PPMX:
        out = new ArithCodeOutputStream(out, new PPMModel(PPM_LARGE_LENGTH));
        break;

    // here's how it would work for external stuff:
    //out = (OutputStream) externalInstance
    //  ("org.apache.commons.compress.bzip2.CBZip2OutputStream",
    //   OutputStream.class, out);
    //break;
    default:
        assert false;
    }
    return out;
}

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From source file:ch.rgw.tools.StringTool.java

/**
 * Eine Hashtable in ein komprimiertes Byte-Array umwandeln
 * //www.j  a v a 2  s  .  c o  m
 * @param hash
 *            die Hashtable
 * @param compressMode
 *            GLZ, HUFF, BZIP2
 * @param ExtInfo
 *            Je nach Kompressmode ntige zusatzinfo
 * @return das byte-Array mit der komprimierten Hashtable
 * @deprecated compressmode is always ZIP now.
 */
@SuppressWarnings("unchecked")
@Deprecated
public static byte[] flatten(final Hashtable hash, final int compressMode, final Object ExtInfo) {
    ByteArrayOutputStream baos = null;
    OutputStream os = null;
    ObjectOutputStream oos = null;
    try {
        baos = new ByteArrayOutputStream(hash.size() * 30);
        switch (compressMode) {
        case GUESS:
        case ZIP:
            os = new ZipOutputStream(baos);
            ((ZipOutputStream) os).putNextEntry(new ZipEntry("hash"));
            break;
        case BZIP:
            os = new CBZip2OutputStream(baos);
            break;
        case HUFF:
            os = new HuffmanOutputStream(baos, (HuffmanTree) ExtInfo, 0);
            break;
        case GLZ:
            os = new GLZOutputStream(baos, hash.size() * 30);
            break;
        default:
            os = baos;
        }

        oos = new ObjectOutputStream(os);
        oos.writeObject(hash);
        if (os != null) {
            os.close();
        }
        baos.close();
        return baos.toByteArray();
    } catch (Exception ex) {
        ExHandler.handle(ex);
        return null;
    }
}

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