Example usage for org.apache.commons.compress.archivers.cpio CpioArchiveOutputStream CpioArchiveOutputStream

Introduction

In this page you can find the example usage for org.apache.commons.compress.archivers.cpio CpioArchiveOutputStream CpioArchiveOutputStream.

Prototype

public CpioArchiveOutputStream(final OutputStream out) 

Source Link

Document

Construct the cpio output stream.

Usage

From source file:com.espringtran.compressor4j.processor.CpioProcessor.java

/**
 * Compress data//from  ww  w . j  a va 2  s.  c o m
 * 
 * @param fileCompressor
 *            FileCompressor object
 * @return
 * @throws Exception
 */
@Override
public byte[] compressData(FileCompressor fileCompressor) throws Exception {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    CpioArchiveOutputStream aos = new CpioArchiveOutputStream(baos);
    try {
        for (BinaryFile binaryFile : fileCompressor.getMapBinaryFile().values()) {
            CpioArchiveEntry entry = new CpioArchiveEntry(binaryFile.getDesPath(), binaryFile.getActualSize());
            aos.putArchiveEntry(entry);
            aos.write(binaryFile.getData());
            aos.closeArchiveEntry();
        }
        aos.flush();
        aos.finish();
    } catch (Exception e) {
        FileCompressor.LOGGER.error("Error on compress data", e);
    } finally {
        aos.close();
        baos.close();
    }
    return baos.toByteArray();
}

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From source file:ch.ledcom.jpreseed.InitrdRepacker.java

public final void repack(OutputStream out) throws IOException {
    // start new archive
    try (CpioArchiveInputStream cpioIn = new CpioArchiveInputStream(new GZIPInputStream(initrdGz));
            CpioArchiveOutputStream cpioOut = new CpioArchiveOutputStream(new GZIPOutputStream(out))) {
        CpioArchiveEntry cpioEntry;/*w ww.  j av  a 2 s  .  c  o  m*/

        // add files from base archive
        while ((cpioEntry = cpioIn.getNextCPIOEntry()) != null) {
            if (!additionalFiles.keySet().contains(cpioEntry.getName())) {
                logger.info("Repacking [{}]", cpioEntry.getName());
                cpioOut.putArchiveEntry(cpioEntry);
                long bytesCopied = copy(cpioIn, cpioOut);
                cpioOut.closeArchiveEntry();
                logger.debug("Copied [{}] bytes", bytesCopied);
            }
        }

        // additional files
        for (Map.Entry<String, File> entry : additionalFiles.entrySet()) {
            logger.info("Packing new file [{}]", entry.getKey());
            ArchiveEntry additionalEntry = cpioOut.createArchiveEntry(entry.getValue(), entry.getKey());
            cpioOut.putArchiveEntry(additionalEntry);
            try (InputStream in = new FileInputStream(entry.getValue())) {
                copy(in, cpioOut);
            }
            cpioOut.closeArchiveEntry();
        }
    }
}

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