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107 lines
3.3 KiB
107 lines
3.3 KiB
.TH ZLIB 3 "11 March 2002" |
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.SH NAME |
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zlib \- compression/decompression library |
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.SH SYNOPSIS |
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[see |
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.I zlib.h |
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for full description] |
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.SH DESCRIPTION |
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The |
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.I zlib |
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library is a general purpose data compression library. |
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The code is thread safe. |
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It provides in-memory compression and decompression functions, |
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including integrity checks of the uncompressed data. |
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This version of the library supports only one compression method (deflation) |
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but other algorithms will be added later and will have the same stream interface. |
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.LP |
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Compression can be done in a single step if the buffers are large enough |
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(for example if an input file is mmap'ed), |
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or can be done by repeated calls of the compression function. |
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In the latter case, |
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the application must provide more input and/or consume the output |
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(providing more output space) before each call. |
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.LP |
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The library also supports reading and writing files in |
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.I gzip |
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(.gz) format |
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with an interface similar to that of stdio. |
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.LP |
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The library does not install any signal handler. The decoder checks |
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the consistency of the compressed data, so the library should never |
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crash even in case of corrupted input. |
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.LP |
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All functions of the compression library are documented in the file |
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.IR zlib.h. |
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The distribution source includes examples of use of the library |
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the files |
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.I example.c |
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and |
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.IR minigzip.c . |
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.LP |
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A Java implementation of |
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.IR zlib |
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is available in the Java Development Kit 1.1 |
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.IP |
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http://www.javasoft.com/products/JDK/1.1/docs/api/Package-java.util.zip.html |
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.LP |
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A Perl interface to |
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.IR zlib , |
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written by Paul Marquess (pmarquess@bfsec.bt.co.uk) |
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is available at CPAN (Comprehensive Perl Archive Network) sites, |
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such as: |
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.IP |
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ftp://ftp.cis.ufl.edu/pub/perl/CPAN/modules/by-module/Compress/Compress-Zlib* |
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.LP |
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A Python interface to |
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.IR zlib |
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written by A.M. Kuchling <amk@magnet.com> |
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is available from the Python Software Association sites, such as: |
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.IP |
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ftp://ftp.python.org/pub/python/contrib/Encoding/zlib*.tar.gz |
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.SH "SEE ALSO" |
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Questions about zlib should be sent to: |
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.IP |
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zlib@quest.jpl.nasa.gov |
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or, if this fails, to the author addresses given below. |
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The zlib home page is: |
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.IP |
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http://www.cdrom.com/pub/infozip/zlib/ |
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.LP |
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The data format used by the zlib library is described by RFC |
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(Request for Comments) 1950 to 1952 in the files: |
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.IP |
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ftp://ds.internic.net/rfc/rfc1950.txt (zlib format) |
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.br |
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rfc1951.txt (deflate format) |
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.br |
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rfc1952.txt (gzip format) |
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.LP |
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These documents are also available in other formats from: |
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.IP |
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ftp://ftp.uu.net/graphics/png/documents/zlib/zdoc-index.html |
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.SH AUTHORS |
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Version 1.1.4 |
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Copyright (C) 1995-2002 Jean-loup Gailly (jloup@gzip.org) |
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and Mark Adler (madler@alumni.caltech.edu). |
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.LP |
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This software is provided "as-is," |
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without any express or implied warranty. |
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In no event will the authors be held liable for any damages |
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arising from the use of this software. |
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See the distribution directory with respect to requirements |
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governing redistribution. |
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The deflate format used by |
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.I zlib |
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was defined by Phil Katz. |
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The deflate and |
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.I zlib |
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specifications were written by L. Peter Deutsch. |
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Thanks to all the people who reported problems and suggested various |
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improvements in |
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.IR zlib ; |
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who are too numerous to cite here. |
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.LP |
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UNIX manual page by R. P. C. Rodgers, |
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U.S. National Library of Medicine (rodgers@nlm.nih.gov). |
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.\" end of man page
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