Examples of org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream

Package org.apache.commons.compress.compressors.gzip

Examples of org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream

org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream
Input stream that decompresses .gz files. This supports decompressing concatenated .gz files which is important when decompressing standalone .gz files.
{@link java.util.zip.GZIPInputStream} doesn't decompress concatenated .gzfiles: it stops after the first member and silently ignores the rest. It doesn't leave the read position to point to the beginning of the next member, which makes it difficult workaround the lack of concatenation support.
Instead of using GZIPInputStream, this class has its own .gz container format decoder. The actual decompression is done with {@link java.util.zip.Inflater}.

                try {
                    fin = new FileInputStream(flashPlayerBinary);
                    final BufferedInputStream in = new BufferedInputStream(fin);
                    final File tempTarFile = File.createTempFile("flex-sdk-linux-flashplayer-binary-" + version, ".tar");
                    final FileOutputStream out = new FileOutputStream(tempTarFile);
                    final GzipCompressorInputStream gzIn = new GzipCompressorInputStream(in);
                    final byte[] buffer = new byte[1024];
                    int n;
                    while (-1 != (n = gzIn.read(buffer))) {
                        out.write(buffer, 0, n);
                    }
                    out.close();
                    gzIn.close();


                    // Then untar it.
                    File uncompressedBinary = null;
                    final FileInputStream tarFileInputStream = new FileInputStream(tempTarFile);
                    final TarArchiveInputStream tarArchiveInputStream = new TarArchiveInputStream(tarFileInputStream);

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   */
  public static File ungzip(final File inFile, final File outFile) {
    FileInputStream fin = null;
    BufferedInputStream in = null;
    FileOutputStream fout = null;
    GzipCompressorInputStream gzIn = null;
    try {
      fin = new FileInputStream(inFile);
      in = new BufferedInputStream(fin);
      gzIn = new GzipCompressorInputStream(in);
      if (!outFile.getParentFile().exists()) {
        outFile.getParentFile().mkdirs();
      }
      fout = new FileOutputStream(outFile);
      final byte[] buffer = new byte[4048];
      int n;
      while (-1 != (n = gzIn.read(buffer))) {
        fout.write(buffer, 0, n);
      }
    } catch (Exception e) {
      throw processException("Error while ungzip file", e);
    } finally {

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public class ChainingTestCase extends AbstractTestCase {


    public void testTarGzip() throws Exception {
        File file = new File("src/test/resources/bla.tgz");
        final TarArchiveInputStream is = new TarArchiveInputStream(new GzipCompressorInputStream(new FileInputStream(file)));
        final TarArchiveEntry entry = (TarArchiveEntry)is.getNextEntry();
        assertNotNull(entry);
        assertEquals("test1.xml", entry.getName());
        is.close();
    }

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        InputStream in;
        InputStream fin = new BufferedInputStream(new FileInputStream(file));
        try {
            if(compression != null) {
                if (CompressorStreamFactory.GZIP.equalsIgnoreCase(compression)) {
                    in = new GzipCompressorInputStream(fin,true);
                } else if (CompressorStreamFactory.BZIP2.equalsIgnoreCase(compression)) {
                    in = new BZip2CompressorInputStream(fin, true);
                } else {
                    // does not honour decompressConcatenated
                    in = cf.createCompressorInputStream(compression, fin);

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                String archiveCompression = detectCompression(archive);
                InputStream fin = new BufferedInputStream(new FileInputStream(archive));
                if(archiveCompression != null) {
                    if (CompressorStreamFactory.GZIP.equalsIgnoreCase(archiveCompression)) {
                        log.info("auto-detected archive compression: GZIP");
                        in = new GzipCompressorInputStream(fin,true);
                    } else if (CompressorStreamFactory.BZIP2.equalsIgnoreCase(archiveCompression)) {
                        log.info("auto-detected archive compression: BZIP2");
                        in = new BZip2CompressorInputStream(fin, true);
                    } else {
                        in = fin;

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      ArchiveInputStream input;
    
            /* I am really sad that classes aren't first-class objects in
               Java :'( */
      try {
        input = new TarArchiveInputStream(new GzipCompressorInputStream(new FileInputStream(file)));
      } catch (IOException e) {
        try {
          input = new TarArchiveInputStream(new BZip2CompressorInputStream(new FileInputStream(file)));
        } catch (IOException e2) {
          input = new ZipArchiveInputStream(new FileInputStream(file));

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            if (BZip2CompressorInputStream.matches(signature, signatureLength)) {
                return new BZip2CompressorInputStream(in);
            }


            if (GzipCompressorInputStream.matches(signature, signatureLength)) {
                return new GzipCompressorInputStream(in);
            }


            if (XZCompressorInputStream.matches(signature, signatureLength)) {
                return new XZCompressorInputStream(in);
            }

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        }


        try {


            if (GZIP.equalsIgnoreCase(name)) {
                return new GzipCompressorInputStream(in);
            }


            if (BZIP2.equalsIgnoreCase(name)) {
                return new BZip2CompressorInputStream(in);
            }

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    public void testConcatenatedStreamsReadFully() throws Exception {
        final File input = getFile("multiple.gz");
        final InputStream is = new FileInputStream(input);
        try {
            final CompressorInputStream in =
                new GzipCompressorInputStream(is, true);
            try {
                assertEquals('a', in.read());
                assertEquals('b', in.read());
                assertEquals(0, in.available());
                assertEquals(-1, in.read());
            } finally {
                in.close();
            }
        } finally {
            is.close();
        }
    }

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      s = s.substring(0, s.lastIndexOf(".")); 
    }
    
    try
    {
      org.apache.commons.compress.utils.IOUtils.copy(new GzipCompressorInputStream(new FileInputStream(archive)), new FileOutputStream(new File(s)));
    }
    catch (Exception e)
    {
      e.printStackTrace();
    }

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