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Newsgroups: comp.lang.ada
Date: Mon, 4 Apr 2016 01:05:24 -0700 (PDT)
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Subject: Re: Ann: Zip-Ada v.50
From: slos <new.stephane.los@gmail.com>
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Xref: news.eternal-september.org comp.lang.ada:29968
Date: 2016-04-04T01:05:24-07:00
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Le jeudi 31 mars 2016 08:30:13 UTC+2, gautier...@hotmail.com a =E9crit=A0:
> Hello,=20
>=20
> There is a new version of Zip-Ada @ http://unzip-ada.sf.net .=20
>=20
> ***
>=20
> In a nutshell, there are now, finally, fast *and* efficient compression m=
ethods available.
>=20
> * Changes in '50', 31-Mar-2016:
>   - Zip.Compress.Shrink is slightly faster
>   - Zip.Compress.Deflate has new compression features:
>    - Deflate_Fixed is much faster, with slightly better compression
>    - Deflate_1 was added: strength similar to zlib, level 6
>    - Deflate_2 was added: strength similar to zlib, level 9
>    - Deflate_3 was added: strength similar to 7-Zip, method=3Ddeflate, le=
vel 5
>=20
> As you perhaps know, the Deflate format performs compression in two steps=
 by combining a LZ77 algorithm with Huffman encoding.
> In this edition, two known algorithms are combined probably for the first=
 time within the same software.
> Additionally, the determination of compressed blocks' boundaries is done =
by an original algorithm based on similarities between Huffman code sets.
>=20
> ***
>=20
> Zip-Ada is a library for dealing with the Zip compressed archive=20
> file format. It supplies:=20
>=20
>  - compression with the following sub-formats ("methods"):=20
>      Store, Reduce, Shrink (LZW) and Deflate=20
>  - decompression for the following sub-formats ("methods"):=20
>      Store, Reduce, Shrink (LZW), Implode, Deflate, BZip2 and LZMA=20
>  - encryption and decryption (portable Zip 2.0 encryption scheme)=20
>  - unconditional portability - within limits of compiler's provided
>      integer types and target architecture capacity
>  - input (archive to decompress or data to compress) can be any data stre=
am=20
>  - output (archive to build or data to extract) can be any data stream=20
>  - types Zip_info and Zip_Create_info to handle archives quickly and easi=
ly=20
>  - cross format compatibility with the most various tools and file format=
s=20
>      based on the Zip format: 7-zip, Info-Zip's Zip, WinZip, PKZip, Java'=
s=20
>      JARs, OpenDocument files, MS Office 2007+, Nokia themes, and many ot=
hers=20
>  - task safety: this library can be used ad libitum in parallel processin=
g=20
>  - endian-neutral I/O=20
> =20
> Enjoy!
> _________________________=20
> Gautier's Ada programming=20
> http://gautiersblog.blogspot.com/search/label/Ada=20
> NB: follow the above link for a valid e-mail address

Hello Gautier,

I wanted to let you know that there are plans to use quite soon your librar=
y to archive data acquired for trending in "Ada for Automation".

I'm also thinking about using Ada PDF Writer for the generation of various =
production or quality reports.

So, thank you very much for providing those libraries to the community.

Best Regards,
St=E9phane
http://slo-ist.fr/ada4autom