Example usage for org.apache.commons.compress.compressors.deflate DeflateParameters setCompressionLevel

Introduction

In this page you can find the example usage for org.apache.commons.compress.compressors.deflate DeflateParameters setCompressionLevel.

Prototype

public void setCompressionLevel(final int compressionLevel) 

Source Link

Document

Sets the compression level.

Usage

From source file:com.izforge.izpack.installer.unpacker.CompressedFileUnpacker.java

/**
 * Unpacks a pack file./* w  w  w .ja v  a  2s.  c  o  m*/
 *
 * @param file            the pack file meta-data
 * @param packInputStream the pack input stream
 * @param target          the target
 * @throws IOException        for any I/O error
 * @throws InstallerException for any installer exception
 */
@Override
public void unpack(PackFile file, InputStream packInputStream, File target)
        throws IOException, InstallerException {
    File tmpfile = File.createTempFile("izpack-uncompress", null, FileUtils.getTempDirectory());
    OutputStream fo = null;
    InputStream finalStream = null;

    try {
        fo = IOUtils.buffer(FileUtils.openOutputStream(tmpfile));
        IOUtils.copyLarge(packInputStream, fo, 0, file.size());
        fo.flush();
        fo.close();

        InputStream in = IOUtils.buffer(FileUtils.openInputStream(tmpfile));

        if (compressionFormat == PackCompression.DEFLATE) {
            DeflateParameters deflateParameters = new DeflateParameters();
            deflateParameters.setCompressionLevel(Deflater.BEST_COMPRESSION);
            finalStream = new DeflateCompressorInputStream(in, deflateParameters);
        } else {
            finalStream = new CompressorStreamFactory().createCompressorInputStream(compressionFormat.toName(),
                    in);
        }

        copy(file, finalStream, target);
    } catch (CompressorException e) {
        throw new IOException(e);
    } finally {
        IOUtils.closeQuietly(fo);
        IOUtils.closeQuietly(finalStream);
        FileUtils.deleteQuietly(tmpfile);
    }
}

---

From source file:com.chenshu.compress.CompressOldTest.java

@Benchmark
public int commonsDeflateCompress() {
    ByteArrayOutputStream bout = null;
    DeflateCompressorOutputStream dout = null;
    try {/*from w ww  .  j a va 2s  . c  o m*/
        DeflateParameters p = new DeflateParameters();
        p.setCompressionLevel(level);
        bout = new ByteArrayOutputStream(data.length);
        dout = new DeflateCompressorOutputStream(bout, p);
        dout.write(data);
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        if (dout != null) {
            try {
                dout.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        if (bout != null) {
            try {
                bout.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    byte[] bs = bout.toByteArray();
    return bs.length;
}

---