quicklz: QuickLZ compression for ByteStrings
This package provides a high level binding to the QuickLZ
compression library for ByteStrings, under the GPLv2
license. QuickLZ is fast and compresses very well. Check out the
home page: http://quicklz.com
This package includes the QuickLZ 1.5.0 source code, at compression level 1 and streaming mode disabled.
The versioning scheme for this package is unusual. QuickLZ tries to
be as fast as possible, and will break backwards compatibility to
achieve it in newer versions. This versioning scheme reflects the
QuickLZ versioning scheme: the first three digits of version w.x.y.z
are the quicklz version, with the z component (and any further
needed ones) being updates to this package, not quicklz itself.
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Flags
Automatic Flags
| Name | Description | Default |
|---|---|---|
| memory-safe | enable quickLZ memory safety checks | Disabled |
Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info
Downloads
- quicklz-1.5.0.11.tar.gz [browse] (Cabal source package)
- Package description (as included in the package)
Maintainer's Corner
For package maintainers and hackage trustees
Candidates
- No Candidates
| Versions [RSS] | 1.5.0.1, 1.5.0.2, 1.5.0.3, 1.5.0.4, 1.5.0.5, 1.5.0.6, 1.5.0.7, 1.5.0.8, 1.5.0.9, 1.5.0.10, 1.5.0.11 |
|---|---|
| Dependencies | base (<5), bytestring (>=0.9) [details] |
| License | GPL-2.0-only |
| Author | Austin Seipp |
| Maintainer | mad.one@gmail.com |
| Category | Codec |
| Home page | http://github.com/thoughtpolice/hs-quicklz |
| Bug tracker | https://github.com/thoughtpolice/hs-quicklz/issues |
| Source repo | head: git clone https://github.com/thoughtpolice/hs-quicklz.git |
| Uploaded | by AustinSeipp at 2012-09-01T19:18:59Z |
| Distributions | LTSHaskell:1.5.0.11, NixOS:1.5.0.11, Stackage:1.5.0.11 |
| Reverse Dependencies | 1 direct, 0 indirect [details] |
| Downloads | 8170 total (23 in the last 30 days) |
| Rating | (no votes yet) [estimated by Bayesian average] |
| Your Rating | |
| Status | Docs uploaded by user Build status unknown [no reports yet] |
Readme for quicklz-1.5.0.11
[back to package description]Fast compression for Haskell ByteStrings
This library implements Haskell bindings to QuickLZ, a fast compression library. The interface is very simple:
compress :: ByteString -> ByteString
decompress :: ByteString -> ByteString
decompress' :: ByteString -> ByteString -- overlapping decompression
As the name states, QuickLZ is fast - at both compression and decompression. Per their own benchmarks, at compression level 1, QuickLZ 1.5.0 has a compression speed of 308Mbyte/s, and a decompression speed of 358Mbyte/s (their benchmarks, Core i7 920.)
travis-ci.org results: 
Installation
Just use cabal:
cabal install quicklz
Join in
File bugs in the GitHub issue tracker.
Master git repository:
git clone https://github.com/thoughtpolice/hs-quicklz.git
Authors
See AUTHORS.txt.
License.
GPLv2. See LICENSE.txt for terms of copyright and redistribution.
TODO
This package has some benchmarks and tests associated - I would like to expand the benchmarks to include bigger data sets in the future.
There is currently only an interface for strict ByteStrings.
I would like to implement the streaming mode functionality sometime in the future, perhaps tying it to John Millikin's enumerator package.