1998-09-14 07:01:19 +04:00
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<!-- This HTML file has been created by texi2html 1.51
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from manual.texi on 23 August 1998 -->
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<TITLE>bzip2 and libbzip2 - Introduction</TITLE>
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Go to the first, previous, <A HREF="manual_2.html">next</A>, <A HREF="manual_4.html">last</A> section, <A HREF="manual_toc.html">table of contents</A>.
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<P><HR><P>
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<P>
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@parindent 0mm
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@parskip 2mm
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</P>
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<P>
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1999-07-03 16:30:16 +04:00
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This program, <CODE>bzip2</CODE>,
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1998-09-14 07:01:19 +04:00
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and associated library <CODE>libbzip2</CODE>, are
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Copyright (C) 1996-1998 Julian R Seward. All rights reserved.
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<P>
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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<UL>
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<LI>
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Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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<LI>
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1999-07-03 16:30:16 +04:00
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The origin of this software must not be misrepresented; you must
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not claim that you wrote the original software. If you use this
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software in a product, an acknowledgment in the product
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1998-09-14 07:01:19 +04:00
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documentation would be appreciated but is not required.
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<LI>
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Altered source versions must be plainly marked as such, and must
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not be misrepresented as being the original software.
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<LI>
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1999-07-03 16:30:16 +04:00
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The name of the author may not be used to endorse or promote
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products derived from this software without specific prior written
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1998-09-14 07:01:19 +04:00
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permission.
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</UL>
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<P>
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS
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OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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</P>
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<P>
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Julian Seward, Guildford, Surrey, UK.
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<P>
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<CODE>jseward@acm.org</CODE>
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<CODE>http://www.muraroa.demon.co.uk</CODE>
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</P>
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<P>
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<CODE>bzip2</CODE>/<CODE>libbzip2</CODE> version 0.9.0 of 23 August 1998.
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</P>
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<P>
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PATENTS: To the best of my knowledge, <CODE>bzip2</CODE> does not use any patented
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algorithms. However, I do not have the resources available to carry out
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a full patent search. Therefore I cannot give any guarantee of the
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above statement.
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</P>
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<H1><A NAME="SEC1" HREF="manual_toc.html#TOC1">Introduction</A></H1>
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<P>
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<CODE>bzip2</CODE> compresses files using the Burrows-Wheeler
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block-sorting text compression algorithm, and Huffman coding.
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Compression is generally considerably better than that
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achieved by more conventional LZ77/LZ78-based compressors,
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and approaches the performance of the PPM family of statistical compressors.
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</P>
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<P>
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<CODE>bzip2</CODE> is built on top of <CODE>libbzip2</CODE>, a flexible library
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for handling compressed data in the <CODE>bzip2</CODE> format. This manual
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describes both how to use the program and
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how to work with the library interface. Most of the
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manual is devoted to this library, not the program,
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which is good news if your interest is only in the program.
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</P>
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<P>
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Chapter 2 describes how to use <CODE>bzip2</CODE>; this is the only part
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you need to read if you just want to know how to operate the program.
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Chapter 3 describes the programming interfaces in detail, and
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Chapter 4 records some miscellaneous notes which I thought
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ought to be recorded somewhere.
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</P>
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<P><HR><P>
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Go to the first, previous, <A HREF="manual_2.html">next</A>, <A HREF="manual_4.html">last</A> section, <A HREF="manual_toc.html">table of contents</A>.
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</BODY>
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</HTML>
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