-.TH ZLIB 3 "24 January 2010"
+.TH ZLIB 3 "27 Nov 2011"
.SH NAME
zlib \- compression/decompression library
.SH SYNOPSIS
The
.I zlib
library is a general purpose data compression library.
-The code is thread safe.
+The code is thread safe, assuming that the standard library functions
+used are thread safe, such as memory allocation routines.
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.
+but other algorithms may be added later
+with the same stream interface.
.LP
Compression can be done in a single step if the buffers are large enough
or can be done by repeated calls of the compression function.
.LP
The library does not install any signal handler.
The decoder checks the consistency of the compressed data,
-so the library should never crash even in case of corrupted input.
+so the library should never crash even in the case of corrupted input.
.LP
All functions of the compression library are documented in the file
.IR zlib.h .
The distribution source includes examples of use of the library
in the files
-.I example.c
+.I test/example.c
and
-.IR minigzip.c .
+.IR test/minigzip.c,
+as well as other examples in the
+.IR examples/
+directory.
.LP
Changes to this version are documented in the file
.I ChangeLog
-that accompanies the source,
-and are concerned primarily with bug fixes and portability enhancements.
+that accompanies the source.
.LP
-A Java implementation of
.I zlib
-is available in the Java Development Kit 1.1:
+is available in Java using the java.util.zip package:
.IP
-http://www.javasoft.com/products/JDK/1.1/docs/api/Package-java.util.zip.html
+http://java.sun.com/developer/technicalArticles/Programming/compression/
.LP
A Perl interface to
.IR zlib ,
is available at CPAN (Comprehensive Perl Archive Network) sites,
including:
.IP
-http://www.cpan.org/modules/by-module/Compress/
+http://search.cpan.org/~pmqs/IO-Compress-Zlib/
.LP
A Python interface to
.IR zlib ,
written by A.M. Kuchling (amk@magnet.com),
is available in Python 1.5 and later versions:
.IP
-http://www.python.org/doc/lib/module-zlib.html
+http://docs.python.org/library/zlib.html
.LP
-A
.I zlib
-binding for
-.IR tcl (1),
-written by Andreas Kupries (a.kupries@westend.com),
-is availlable at:
+is built into
+.IR tcl:
.IP
-http://www.westend.com/~kupries/doc/trf/man/man.html
+http://wiki.tcl.tk/4610
.LP
An experimental package to read and write files in .zip format,
written on top of
by Gilles Vollant (info@winimage.com),
is available at:
.IP
-http://www.winimage.com/zLibDll/unzip.html
+http://www.winimage.com/zLibDll/minizip.html
and also in the
.I contrib/minizip
directory of the main
.I zlib
-web site.
+source distribution.
.SH "SEE ALSO"
The
.I zlib
-web site can be found at either of these locations:
+web site can be found at:
.IP
-http://www.zlib.org
-.br
-http://www.gzip.org/zlib/
+http://zlib.net/
.LP
The data format used by the zlib library is described by RFC
(Request for Comments) 1950 to 1952 in the files:
.IP
-http://www.ietf.org/rfc/rfc1950.txt (concerning zlib format)
+http://tools.ietf.org/html/rfc1950 (for the zlib header and trailer format)
.br
-http://www.ietf.org/rfc/rfc1951.txt (concerning deflate format)
+http://tools.ietf.org/html/rfc1951 (for the deflate compressed data format)
.br
-http://www.ietf.org/rfc/rfc1952.txt (concerning gzip format)
-.LP
-These documents are also available in other formats from:
-.IP
-ftp://ftp.uu.net/graphics/png/documents/zlib/zdoc-index.html
+http://tools.ietf.org/html/rfc1952 (for the gzip header and trailer format)
.LP
-Mark Nelson (markn@ieee.org) wrote an article about
+Mark Nelson wrote an article about
.I zlib
for the Jan. 1997 issue of Dr. Dobb's Journal;
a copy of the article is available at:
.IP
-http://dogma.net/markn/articles/zlibtool/zlibtool.htm
+http://marknelson.us/1997/01/01/zlib-engine/
.SH "REPORTING PROBLEMS"
Before reporting a problem,
please check the
.I zlib
FAQ at:
.IP
-http://www.gzip.org/zlib/zlib_faq.html
+http://zlib.net/zlib_faq.html
.LP
before asking for help.
Send questions and/or comments to zlib@gzip.org,
or (for the Windows DLL version) to Gilles Vollant (info@winimage.com).
.SH AUTHORS
-Version 1.2.3.7
-Copyright (C) 1995-2010 Jean-loup Gailly (jloup@gzip.org)
+Version 1.2.5.2
+Copyright (C) 1995-2011 Jean-loup Gailly (jloup@gzip.org)
and Mark Adler (madler@alumni.caltech.edu).
.LP
This software is provided "as-is,"