MAN page from Old RedHat 5.X zlib-devel-1.1.2-2.i386.rpm
ZLIB
Section: C Library Functions (3)
Updated: 19 March 1998
Index NAME
zlib - compression/decompression library
SYNOPSIS
[see
zlib.hfor full description]
DESCRIPTION
The
zliblibrary is a general purpose data compression library.The code is thread safe.It provides in-memory compression and decompression functions,including integrity checks of the uncompressed data.This version of the library supports only one compression method (deflation)but other algorithms will be added later and will have the same stream interface.
Compression can be done in a single step if the buffers are large enough(for example if an input file is mmap'ed),or can be done by repeated calls of the compression function.In the latter case,the application must provide more input and/or consume the output(providing more output space) before each call.
The library also supports reading and writing files ingzip(.gz) formatwith an interface similar to that of stdio.
The library does not install any signal handler. The decoder checksthe consistency of the compressed data, so the library should nevercrash even in case of corrupted input.
All functions of the compression library are documented in the filezlib.h.The distribution source includes examples of use of the librarythe filesexample.candminigzip.c.
A Java implementation ofzlibis available in the Java Development Kit 1.1
- http://www.javasoft.com/products/JDK/1.1/docs/api/Package-java.util.zip.html
A Perl interface tozlib,written by Paul Marquess (pmarquessAATTbfsec.bt.co.uk)is available at CPAN (Comprehensive Perl Archive Network) sites,such as:
- ftp://ftp.cis.ufl.edu/pub/perl/CPAN/modules/by-module/Compress/Compress-Zlib*
A Python interface tozlibwritten by A.M. Kuchling <amkAATTmagnet.com>is available from the Python Software Association sites, such as:
- ftp://ftp.python.org/pub/python/contrib/Encoding/zlib*.tar.gz
SEE ALSO
Questions about zlib should be sent to:
- zlibAATTquest.jpl.nasa.govor, if this fails, to the author addresses given below.The zlib home page is:
- http://www.cdrom.com/pub/infozip/zlib/
The data format used by the zlib library is described by RFC(Request for Comments) 1950 to 1952 in the files:
- ftp://ds.internic.net/rfc/rfc1950.txt (zlib format)
rfc1951.txt (deflate format)
rfc1952.txt (gzip format)
These documents are also available in other formats from:
- ftp://ftp.uu.net/graphics/png/documents/zlib/zdoc-index.html
AUTHORS
Version 1.1.2Copyright (C) 1995-1998 Jean-loup Gailly (jloupAATTgzip.org)and Mark Adler (madlerAATTalumni.caltech.edu).
This software is provided "as-is,"without any express or implied warranty.In no event will the authors be held liable for any damagesarising from the use of this software.See the distribution directory with respect to requirementsgoverning redistribution.The deflate format used byzlibwas defined by Phil Katz.The deflate andzlibspecifications were written by L. Peter Deutsch.Thanks to all the people who reported problems and suggested variousimprovements inzlib;who are too numerous to cite here.
UNIX manual page by R. P. C. Rodgers,U.S. National Library of Medicine (rodgersAATTnlm.nih.gov).
Index
- NAME
- SYNOPSIS
- DESCRIPTION
- SEE ALSO
- AUTHORS
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