| README (180208) | README (205471) |
|---|---|
| 1ZLIB DATA COMPRESSION LIBRARY 2 | 1ZLIB DATA COMPRESSION LIBRARY 2 |
| 3zlib 1.2.3 is a general purpose data compression library. All the code is | 3zlib 1.2.4 is a general purpose data compression library. All the code is |
| 4thread safe. The data format used by the zlib library is described by RFCs 5(Request for Comments) 1950 to 1952 in the files 6http://www.ietf.org/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate format) | 4thread safe. The data format used by the zlib library is described by RFCs 5(Request for Comments) 1950 to 1952 in the files 6http://www.ietf.org/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate format) |
| 7and rfc1952.txt (gzip format). These documents are also available in other 8formats from ftp://ftp.uu.net/graphics/png/documents/zlib/zdoc-index.html | 7and rfc1952.txt (gzip format). |
| 9 10All functions of the compression library are documented in the file zlib.h | 8 9All functions of the compression library are documented in the file zlib.h |
| 11(volunteer to write man pages welcome, contact zlib@gzip.org). A usage example | 10(volunteer to write man pages welcome, contact zlib@gzip.org). A usage example |
| 12of the library is given in the file example.c which also tests that the library | 11of the library is given in the file example.c which also tests that the library |
| 13is working correctly. Another example is given in the file minigzip.c. The | 12is working correctly. Another example is given in the file minigzip.c. The |
| 14compression library itself is composed of all source files except example.c and 15minigzip.c. 16 17To compile all files and run the test program, follow the instructions given at | 13compression library itself is composed of all source files except example.c and 14minigzip.c. 15 16To compile all files and run the test program, follow the instructions given at |
| 18the top of Makefile. In short "make test; make install" should work for most 19machines. For Unix: "./configure; make test; make install". For MSDOS, use one 20of the special makefiles such as Makefile.msc. For VMS, use make_vms.com. | 17the top of Makefile.in. In short "./configure; make test", and if that goes 18well, "make install" should work for most flavors of Unix. For Windows, use one 19of the special makefiles in win32/ or projects/ . For VMS, use make_vms.com. |
| 21 22Questions about zlib should be sent to <zlib@gzip.org>, or to Gilles Vollant | 20 21Questions about zlib should be sent to <zlib@gzip.org>, or to Gilles Vollant |
| 23 24http://www.zlib.org or http://www.gzip.org/zlib/ Before reporting a problem, 25please check this site to verify that you have the latest version of zlib; 26otherwise get the latest version and check whether the problem still exists or 27not. | 22<info@winimage.com> for the Windows DLL version. The zlib home page is 23http://zlib.net/ . Before reporting a problem, please check this site to 24verify that you have the latest version of zlib; otherwise get the latest 25version and check whether the problem still exists or not. |
| 28 | 26 |
| 29PLEASE read the zlib FAQ http://www.gzip.org/zlib/zlib_faq.html before asking 30for help. | 27PLEASE read the zlib FAQ http://zlib.net/zlib_faq.html before asking for help. |
| 31 | 28 |
| 32Mark Nelson 33issue of Dr. Dobb's Journal; a copy of the article is available in 34http://dogma.net/markn/articles/zlibtool/zlibtool.htm | 29Mark Nelson <markn@ieee.org> wrote an article about zlib for the Jan. 1997 30issue of Dr. Dobb's Journal; a copy of the article is available at 31http://marknelson.us/1997/01/01/zlib-engine/ . |
| 35 | 32 |
| 36The changes made in version 1.2.3 are documented in the file ChangeLog. | 33The changes made in version 1.2.4 are documented in the file ChangeLog. |
| 37 | 34 |
| 38Unsupported third party contributions are provided in directory "contrib". | 35Unsupported third party contributions are provided in directory contrib/ . |
| 39 | 36 |
| 40A Java implementation of zlib is available in the Java Development Kit 41http://java.sun.com/j2se/1.4.2/docs/api/java/util/zip/package-summary.html 42See the zlib home page http://www.zlib.org for details. | 37zlib is available in Java using the java.util.zip package, documented at 38http://java.sun.com/developer/technicalArticles/Programming/compression/ . |
| 43 | 39 |
| 44A Perl interface to zlib written by Paul Marquess <pmqs@cpan.org> is in the 45CPAN (Comprehensive Perl Archive Network) sites 46http://www.cpan.org/modules/by-module/Compress/ | 40A Perl interface to zlib written by Paul Marquess <pmqs@cpan.org> is available 41at CPAN (Comprehensive Perl Archive Network) sites, including 42http://search.cpan.org/~pmqs/IO-Compress-Zlib/ . |
| 47 48A Python interface to zlib written by A.M. Kuchling <amk@amk.ca> is 49available in Python 1.5 and later versions, see | 43 44A Python interface to zlib written by A.M. Kuchling <amk@amk.ca> is 45available in Python 1.5 and later versions, see |
| 50http://www.python.org/doc/lib/module-zlib.html | 46http://www.python.org/doc/lib/module-zlib.html . |
| 51 | 47 |
| 52A zlib binding for TCL written by Andreas Kupries <a.kupries@westend.com> is 53availlable at http://www.oche.de/~akupries/soft/trf/trf_zip.html | 48zlib is built into tcl: http://wiki.tcl.tk/4610 . |
| 54 55An experimental package to read and write files in .zip format, written on top 56of zlib by Gilles Vollant <info@winimage.com>, is available in the 57contrib/minizip directory of zlib. 58 59 60Notes for some targets: 61 --- 7 unchanged lines hidden (view full) --- 69 when compiled with cc. 70 71- On Digital Unix 4.0D (formely OSF/1) on AlphaServer, the cc option -std1 is 72 necessary to get gzprintf working correctly. This is done by configure. 73 74- zlib doesn't work on HP-UX 9.05 with some versions of /bin/cc. It works with 75 other compilers. Use "make test" to check your compiler. 76 | 49 50An experimental package to read and write files in .zip format, written on top 51of zlib by Gilles Vollant <info@winimage.com>, is available in the 52contrib/minizip directory of zlib. 53 54 55Notes for some targets: 56 --- 7 unchanged lines hidden (view full) --- 64 when compiled with cc. 65 66- On Digital Unix 4.0D (formely OSF/1) on AlphaServer, the cc option -std1 is 67 necessary to get gzprintf working correctly. This is done by configure. 68 69- zlib doesn't work on HP-UX 9.05 with some versions of /bin/cc. It works with 70 other compilers. Use "make test" to check your compiler. 71 |
| 77- gzdopen is not supported on RISCOS, BEOS and by some Mac compilers. | 72- gzdopen is not supported on RISCOS or BEOS. |
| 78 79- For PalmOs, see http://palmzlib.sourceforge.net/ 80 | 73 74- For PalmOs, see http://palmzlib.sourceforge.net/ 75 |
| 81- When building a shared, i.e. dynamic library on Mac OS X, the library must be 82 installed before testing (do "make install" before "make test"), since the 83 library location is specified in the library. | |
| 84 | 76 |
| 85 | |
| 86Acknowledgments: 87 | 77Acknowledgments: 78 |
| 88 The deflate format used by zlib was defined by Phil Katz. The deflate 89 and zlib specifications were written by L. Peter Deutsch. Thanks to all the 90 people who reported problems and suggested various improvements in zlib; 91 they are too numerous to cite here. | 79 The deflate format used by zlib was defined by Phil Katz. The deflate and 80 zlib specifications were written by L. Peter Deutsch. Thanks to all the 81 people who reported problems and suggested various improvements in zlib; they 82 are too numerous to cite here. |
| 92 93Copyright notice: 94 | 83 84Copyright notice: 85 |
| 95 (C) 1995-2004 Jean-loup Gailly and Mark Adler | 86 (C) 1995-2010 Jean-loup Gailly and Mark Adler |
| 96 97 This software is provided 'as-is', without any express or implied 98 warranty. In no event will the authors be held liable for any damages 99 arising from the use of this software. 100 101 Permission is granted to anyone to use this software for any purpose, 102 including commercial applications, and to alter it and redistribute it 103 freely, subject to the following restrictions: --- 4 unchanged lines hidden (view full) --- 108 appreciated but is not required. 109 2. Altered source versions must be plainly marked as such, and must not be 110 misrepresented as being the original software. 111 3. This notice may not be removed or altered from any source distribution. 112 113 Jean-loup Gailly Mark Adler 114 jloup@gzip.org madler@alumni.caltech.edu 115 | 87 88 This software is provided 'as-is', without any express or implied 89 warranty. In no event will the authors be held liable for any damages 90 arising from the use of this software. 91 92 Permission is granted to anyone to use this software for any purpose, 93 including commercial applications, and to alter it and redistribute it 94 freely, subject to the following restrictions: --- 4 unchanged lines hidden (view full) --- 99 appreciated but is not required. 100 2. Altered source versions must be plainly marked as such, and must not be 101 misrepresented as being the original software. 102 3. This notice may not be removed or altered from any source distribution. 103 104 Jean-loup Gailly Mark Adler 105 jloup@gzip.org madler@alumni.caltech.edu 106 |
| 116If you use the zlib library in a product, we would appreciate *not* 117receiving lengthy legal documents to sign. The sources are provided 118for free but without warranty of any kind. The library has been 119entirely written by Jean-loup Gailly and Mark Adler; it does not 120include third-party code. | 107If you use the zlib library in a product, we would appreciate *not* receiving 108lengthy legal documents to sign. The sources are provided for free but without 109warranty of any kind. The library has been entirely written by Jean-loup 110Gailly and Mark Adler; it does not include third-party code. |
| 121 | 111 |
| 122If you redistribute modified sources, we would appreciate that you include 123in the file ChangeLog history information documenting your changes. Please 124read the FAQ for more information on the distribution of modified source 125versions. | 112If you redistribute modified sources, we would appreciate that you include in 113the file ChangeLog history information documenting your changes. Please read 114the FAQ for more information on the distribution of modified source versions. |