org.apache.nutch.util
Class GZIPUtils

java.lang.Object
  org.apache.nutch.util.GZIPUtils

public class GZIPUtils
extends Object

A collection of utility methods for working on GZIPed data.

Constructor Summary

GZIPUtils()

Method Summary

static byte[]	unzip(byte[] in) Returns an gunzipped copy of the input array.
static byte[]	unzipBestEffort(byte[] in) Returns an gunzipped copy of the input array.
static byte[]	unzipBestEffort(byte[] in, int sizeLimit) Returns an gunzipped copy of the input array, truncated to sizeLimit bytes, if necessary.
static byte[]	zip(byte[] in) Returns an gzipped copy of the input array.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GZIPUtils

public GZIPUtils()

Method Detail

unzipBestEffort

public static final byte[] unzipBestEffort(byte[] in)

Returns an gunzipped copy of the input array. If the gzipped input has been truncated or corrupted, a best-effort attempt is made to unzip as much as possible. If no data can be extracted null is returned.

unzipBestEffort

public static final byte[] unzipBestEffort(byte[] in,
                                           int sizeLimit)

Returns an gunzipped copy of the input array, truncated to sizeLimit bytes, if necessary. If the gzipped input has been truncated or corrupted, a best-effort attempt is made to unzip as much as possible. If no data can be extracted null is returned.

unzip

public static final byte[] unzip(byte[] in)
                          throws IOException

Returns an gunzipped copy of the input array.

Throws:

IOException - if the input cannot be properly decompressed

zip

public static final byte[] zip(byte[] in)

Returns an gzipped copy of the input array.