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

Introduction

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

Prototype

DeflateParameters

Source Link

Usage

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

/**
 * Unpacks a pack file.// w ww  . ja  v  a2s.  c om
 *
 * @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);
    }
}

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

@Benchmark
public int commonsDeflateCompress() {
    ByteArrayOutputStream bout = null;
    DeflateCompressorOutputStream dout = null;
    try {// www  .  j a  va  2 s  .  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;
}

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