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| 1 .TH ZLIB 3 "2 May 2012" |
| 2 .SH NAME |
| 3 zlib \- compression/decompression library |
| 4 .SH SYNOPSIS |
| 5 [see |
| 6 .I zlib.h |
| 7 for full description] |
| 8 .SH DESCRIPTION |
| 9 The |
| 10 .I zlib |
| 11 library is a general purpose data compression library. |
| 12 The code is thread safe, assuming that the standard library functions |
| 13 used are thread safe, such as memory allocation routines. |
| 14 It provides in-memory compression and decompression functions, |
| 15 including integrity checks of the uncompressed data. |
| 16 This version of the library supports only one compression method (deflation) |
| 17 but other algorithms may be added later |
| 18 with the same stream interface. |
| 19 .LP |
| 20 Compression can be done in a single step if the buffers are large enough |
| 21 or can be done by repeated calls of the compression function. |
| 22 In the latter case, |
| 23 the application must provide more input and/or consume the output |
| 24 (providing more output space) before each call. |
| 25 .LP |
| 26 The library also supports reading and writing files in |
| 27 .IR gzip (1) |
| 28 (.gz) format |
| 29 with an interface similar to that of stdio. |
| 30 .LP |
| 31 The library does not install any signal handler. |
| 32 The decoder checks the consistency of the compressed data, |
| 33 so the library should never crash even in the case of corrupted input. |
| 34 .LP |
| 35 All functions of the compression library are documented in the file |
| 36 .IR zlib.h . |
| 37 The distribution source includes examples of use of the library |
| 38 in the files |
| 39 .I test/example.c |
| 40 and |
| 41 .IR test/minigzip.c, |
| 42 as well as other examples in the |
| 43 .IR examples/ |
| 44 directory. |
| 45 .LP |
| 46 Changes to this version are documented in the file |
| 47 .I ChangeLog |
| 48 that accompanies the source. |
| 49 .LP |
| 50 .I zlib |
| 51 is available in Java using the java.util.zip package: |
| 52 .IP |
| 53 http://java.sun.com/developer/technicalArticles/Programming/compression/ |
| 54 .LP |
| 55 A Perl interface to |
| 56 .IR zlib , |
| 57 written by Paul Marquess (pmqs@cpan.org), |
| 58 is available at CPAN (Comprehensive Perl Archive Network) sites, |
| 59 including: |
| 60 .IP |
| 61 http://search.cpan.org/~pmqs/IO-Compress-Zlib/ |
| 62 .LP |
| 63 A Python interface to |
| 64 .IR zlib , |
| 65 written by A.M. Kuchling (amk@magnet.com), |
| 66 is available in Python 1.5 and later versions: |
| 67 .IP |
| 68 http://docs.python.org/library/zlib.html |
| 69 .LP |
| 70 .I zlib |
| 71 is built into |
| 72 .IR tcl: |
| 73 .IP |
| 74 http://wiki.tcl.tk/4610 |
| 75 .LP |
| 76 An experimental package to read and write files in .zip format, |
| 77 written on top of |
| 78 .I zlib |
| 79 by Gilles Vollant (info@winimage.com), |
| 80 is available at: |
| 81 .IP |
| 82 http://www.winimage.com/zLibDll/minizip.html |
| 83 and also in the |
| 84 .I contrib/minizip |
| 85 directory of the main |
| 86 .I zlib |
| 87 source distribution. |
| 88 .SH "SEE ALSO" |
| 89 The |
| 90 .I zlib |
| 91 web site can be found at: |
| 92 .IP |
| 93 http://zlib.net/ |
| 94 .LP |
| 95 The data format used by the zlib library is described by RFC |
| 96 (Request for Comments) 1950 to 1952 in the files: |
| 97 .IP |
| 98 http://tools.ietf.org/html/rfc1950 (for the zlib header and trailer format) |
| 99 .br |
| 100 http://tools.ietf.org/html/rfc1951 (for the deflate compressed data format) |
| 101 .br |
| 102 http://tools.ietf.org/html/rfc1952 (for the gzip header and trailer format) |
| 103 .LP |
| 104 Mark Nelson wrote an article about |
| 105 .I zlib |
| 106 for the Jan. 1997 issue of Dr. Dobb's Journal; |
| 107 a copy of the article is available at: |
| 108 .IP |
| 109 http://marknelson.us/1997/01/01/zlib-engine/ |
| 110 .SH "REPORTING PROBLEMS" |
| 111 Before reporting a problem, |
| 112 please check the |
| 113 .I zlib |
| 114 web site to verify that you have the latest version of |
| 115 .IR zlib ; |
| 116 otherwise, |
| 117 obtain the latest version and see if the problem still exists. |
| 118 Please read the |
| 119 .I zlib |
| 120 FAQ at: |
| 121 .IP |
| 122 http://zlib.net/zlib_faq.html |
| 123 .LP |
| 124 before asking for help. |
| 125 Send questions and/or comments to zlib@gzip.org, |
| 126 or (for the Windows DLL version) to Gilles Vollant (info@winimage.com). |
| 127 .SH AUTHORS |
| 128 Version 1.2.7 |
| 129 Copyright (C) 1995-2012 Jean-loup Gailly (jloup@gzip.org) |
| 130 and Mark Adler (madler@alumni.caltech.edu). |
| 131 .LP |
| 132 This software is provided "as-is," |
| 133 without any express or implied warranty. |
| 134 In no event will the authors be held liable for any damages |
| 135 arising from the use of this software. |
| 136 See the distribution directory with respect to requirements |
| 137 governing redistribution. |
| 138 The deflate format used by |
| 139 .I zlib |
| 140 was defined by Phil Katz. |
| 141 The deflate and |
| 142 .I zlib |
| 143 specifications were written by L. Peter Deutsch. |
| 144 Thanks to all the people who reported problems and suggested various |
| 145 improvements in |
| 146 .IR zlib ; |
| 147 who are too numerous to cite here. |
| 148 .LP |
| 149 UNIX manual page by R. P. C. Rodgers, |
| 150 U.S. National Library of Medicine (rodgers@nlm.nih.gov). |
| 151 .\" end of man page |
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Chromium Code Reviews
Issue 11198034:
Introduce (private) ZLibFilter to dart:io. (Closed)
Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart