Examples of com.alimama.mdrill.utils.zip.ZipFile$OffsetEntry

com.alimama.mdrill.utils.zip.ZipFile

Replacement for java.util.ZipFile.

This class adds support for file name encodings other than UTF-8 (which is required to work on ZIP files created by native zip tools and is able to skip a preamble like the one found in self extracting archives. Furthermore it returns instances of org.apache.tools.zip.ZipEntry instead of java.util.zip.ZipEntry.

It doesn't extend java.util.zip.ZipFile as it would have to reimplement all methods anyway. Like java.util.ZipFile, it uses RandomAccessFile under the covers and supports compressed and uncompressed entries. As of Apache Ant 1.9.0 it also transparently supports Zip64 extensions and thus individual entries and archives larger than 4 GB or with more than 65536 entries.

The method signatures mimic the ones of java.util.zip.ZipFile, with a couple of exceptions:

There is no getName method.
entries has been renamed to getEntries.
getEntries and getEntry return org.apache.tools.zip.ZipEntry instances.
close is allowed to throw IOException.

     */
    public static void unZip(FileSystem fs,String zipFilePath, FileSystem fs2,String destDir) throws Exception {
      FSDataInputStream in=fs.open(new Path(zipFilePath));
      long length = fs.getFileStatus(new Path(zipFilePath)).getLen();


        ZipFile zipFile = new ZipFile(in,length, CHINESE_CHARSET,true);
        Enumeration<?> emu = zipFile.getEntries();
        BufferedInputStream bis;
        FSDataOutputStream fos;
        BufferedOutputStream bos;
        Path file, parentFile;
        ZipEntry entry;
        byte[] cache = new byte[CACHE_SIZE];
        while (emu.hasMoreElements()) {
            entry = (ZipEntry) emu.nextElement();
            if (entry.isDirectory()) {
              fs2.mkdirs(new Path(destDir , entry.getName()));
                continue;
            }
            bis = new BufferedInputStream(zipFile.getInputStream(entry));
            file = new Path(destDir , entry.getName());
            parentFile = file.getParent();
            if (parentFile != null && (!fs2.exists(parentFile))) {
              fs2.mkdirs(parentFile);
            }
            fos =fs2.create(file,true);
            bos = new BufferedOutputStream(fos, CACHE_SIZE);
            int nRead = 0;
            while ((nRead = bis.read(cache, 0, CACHE_SIZE)) != -1) {
                fos.write(cache, 0, nRead);
            }
            bos.flush();
            bos.close();
            fos.close();
            bis.close();
        }
        zipFile.close();
    }

Examples of com.alimama.mdrill.utils.zip.ZipFile$OffsetEntry

Related Classes of com.alimama.mdrill.utils.zip.ZipFile$OffsetEntry