From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM autolearn=ham autolearn_force=no version=3.4.4 X-Google-Thread: 103376,21c8789b4410c935 X-Google-NewGroupId: yes X-Google-Attributes: gida07f3367d7,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII Path: g2news2.google.com!postnews.google.com!a28g2000vbo.googlegroups.com!not-for-mail From: Gautier write-only Newsgroups: comp.lang.ada Subject: Re: ZLib in Ada ? Date: Mon, 7 Mar 2011 15:10:34 -0800 (PST) Organization: http://groups.google.com Message-ID: <9d2728d5-d696-45c2-8289-d8f809033594@a28g2000vbo.googlegroups.com> References: <3db992ba-2a06-4c76-b947-899088e22bbd@glegroupsg2000goo.googlegroups.com> <2011030722002116807-sjs@essexacuk> NNTP-Posting-Host: 85.1.72.27 Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: posting.google.com 1299539434 30576 127.0.0.1 (7 Mar 2011 23:10:34 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Mon, 7 Mar 2011 23:10:34 +0000 (UTC) Complaints-To: groups-abuse@google.com Injection-Info: a28g2000vbo.googlegroups.com; posting-host=85.1.72.27; posting-account=gRqrnQkAAAAC_02ynnhqGk1VRQlve6ZG User-Agent: G2/1.0 X-HTTP-UserAgent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/534.13 (KHTML, like Gecko) Chrome/9.0.597.107 Safari/534.13,gzip(gfe) Xref: g2news2.google.com comp.lang.ada:18932 Date: 2011-03-07T15:10:34-08:00 List-Id: On Mar 7, 11:00=A0pm, Stephen Sangwine wrote: > Yes, but Zlib does more than make ZIP files! Example, Zlib is used > for compression in the PNG image format, so a PNG codec needs Zlib > without the ZIP file format. True, and ZLib is found at every corner: VPN connections, various compressed formats like NetCDF, and what else ? Here is a list: http://en.wikipedia.org/wiki/Zlib#Applications . Reversely, the Zip format supports many compression formats beside Deflate (the one of ZLib): LZW, bzip2, LZMA... In a Zip archive each compressed file may have a different compression format, which allows for nice optimizations (this is what the ReZip tool is doing). ______________________________________________________________ Gautier's Ada programming -- http://gautiersblog.blogspot.com/ NB: follow the above link for a working e-mail address