https://github.com/cldellow/gzip

A fork of java.util.zip.GZIPInputStream that emits the offsets of nested streams.
https://github.com/cldellow/gzip

compression gzip warc

Last synced: 12 months ago
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A fork of java.util.zip.GZIPInputStream that emits the offsets of nested streams.

• Host: GitHub
• URL: https://github.com/cldellow/gzip
• Owner: cldellow
• License: gpl-2.0
• Created: 2019-01-12T23:39:36.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2019-04-28T08:38:48.000Z (about 7 years ago)
• Last Synced: 2025-07-06T07:14:22.767Z (12 months ago)
• Topics: compression, gzip, warc
• Language: Java
• Size: 21.5 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# DEPRECATED

_Don't use this library!_

It relied on accessing internals of `java.util.zip.Inflater`, which have

changed in JDK 11.

Instead, use [GzipCompressorInputStream](https://commons.apache.org/proper/commons-compress/apidocs/org/apache/commons/compress/compressors/gzip/GzipCompressorInputStream.html)

from Apache compress-commons. An example of how to use it is at https://github.com/cldellow/warc-service/blob/e95f8f5906c39efeb781a47b343a7cec179af7e3/src/main/scala/com/cldellow/warc/framework/WarcHandler.scala#L62

## gzip

[![Build Status](https://travis-ci.org/cldellow/gzip.svg?branch=master)](https://travis-ci.org/cldellow/gzip)

[![codecov](https://codecov.io/gh/cldellow/gzip/branch/master/graph/badge.svg)](https://codecov.io/gh/cldellow/gzip)

[![Maven Central](https://img.shields.io/maven-central/v/com.cldellow/gzip.svg)](https://mvnrepository.com/artifact/com.cldellow/gzip)

Emit offsets of nested GZIP streams.

GZIP has the interesting property that a sequence of concatenated

GZIP streams can be read as though it were a single GZIP stream.

The Web Archive (WARC) format takes advantage of this to store tens

of thousands of GZIP streams in a single file. When processing such

a file, it can be useful to know the start of the underlying stream.

The stock `java.util.zip.GZIPInputStream` class does not expose this.

This library patches that class expose a callback which gets invoked

with the offsets of the member streams.

### Usage

```

int[] offsets = new int[100];

GZIPInputStream gzis = new GZIPInputStream(is, (member, offset) -> { offsets[member] = offset; });

```

### License

This library is a fork of `java.util.zip.GZIPInputStream` as implemented

by Oracle.

This library's contents are subject to the GPL "Classpath" exception. You may

link it into an executable without that executable itself having to be licensed

under the GPL.