summaryrefslogtreecommitdiffstats
path: root/README
diff options
context:
space:
mode:
authorDaniel Baumann <mail@daniel-baumann.ch>2015-11-06 11:29:52 +0000
committerDaniel Baumann <mail@daniel-baumann.ch>2015-11-06 11:29:52 +0000
commitb38971cdac8caca8d11df5598920e118d52ccfe0 (patch)
treecef0a6f087c31309761db57f4d8df0760db3c123 /README
parentAdding upstream version 1.0. (diff)
downloadclzip-b38971cdac8caca8d11df5598920e118d52ccfe0.tar.xz
clzip-b38971cdac8caca8d11df5598920e118d52ccfe0.zip
Adding upstream version 1.1~rc2.upstream/1.1_rc2
Signed-off-by: Daniel Baumann <mail@daniel-baumann.ch>
Diffstat (limited to 'README')
-rw-r--r--README28
1 files changed, 16 insertions, 12 deletions
diff --git a/README b/README
index 24f3146..a503945 100644
--- a/README
+++ b/README
@@ -35,9 +35,9 @@ standard input. This allows the direct creation of multivolume
compressed tar archives.
Clzip will automatically use the smallest possible dictionary size
-without exceeding the given limit. It is important to appreciate that
-the decompression memory requirement is affected at compression time by
-the choice of dictionary size limit.
+without exceeding the given limit. Keep in mind that the decompression
+memory requirement is affected at compression time by the choice of
+dictionary size limit.
As a self-check for your protection, clzip stores in the member trailer
the 32-bit CRC of the original data and the size of the original data,
@@ -51,14 +51,18 @@ something is wrong. It can't help you recover the original uncompressed
data.
Clzip implements a simplified version of the LZMA (Lempel-Ziv-Markov
-chain-Algorithm) algorithm. The original LZMA algorithm was designed by
-Igor Pavlov.
+chain-Algorithm) algorithm. The high compression of LZMA comes from
+combining two basic, well-proven compression ideas: sliding dictionaries
+(LZ77/78) and markov models (the thing used by every compression
+algorithm that uses a range encoder or similar order-0 entropy coder as
+its last stage) with segregation of contexts according to what the bits
+are used for.
-The high compression of LZMA comes from combining two basic, well-proven
-compression ideas: sliding dictionaries (LZ77/78) and markov models (the
-thing used by every compression algorithm that uses a range encoder or
-similar order-0 entropy coder as its last stage) with segregation of
-contexts according to what the bits are used for.
+The ideas embodied in clzip are due to (at least) the following people:
+Abraham Lempel and Jacob Ziv (for the LZ algorithm), Andrey Markov (for
+the definition of Markov chains), G.N.N. Martin (for the definition of
+range encoding), Igor Pavlov (for putting all the above together in
+LZMA), and Julian Seward (for bzip2's CLI and the idea of unzcrash).
Copyright (C) 2010 Antonio Diaz Diaz.
@@ -67,5 +71,5 @@ This file is free documentation: you have unlimited permission to copy,
distribute and modify it.
The file Makefile.in is a data file used by configure to produce the
-Makefile. It has the same copyright owner and permissions that this
-file.
+Makefile. It has the same copyright owner and permissions that configure
+itself.