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Diffstat (limited to 'doc/clzip.texi')
| -rw-r--r-- | doc/clzip.texi | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/doc/clzip.texi b/doc/clzip.texi index 5f4e8ca..1640d18 100644 --- a/doc/clzip.texi +++ b/doc/clzip.texi @@ -6,8 +6,8 @@ @finalout @c %**end of header -@set UPDATED 30 June 2014 -@set VERSION 1.6-rc1 +@set UPDATED 28 August 2014 +@set VERSION 1.6 @dircategory Data Compression @direntry @@ -45,7 +45,7 @@ This manual is for Clzip (version @value{VERSION}, @value{UPDATED}). @end menu @sp 1 -Copyright @copyright{} 2010, 2011, 2012, 2013, 2014 Antonio Diaz Diaz. +Copyright @copyright{} 2010-2014 Antonio Diaz Diaz. This manual is free documentation: you have unlimited permission to copy, distribute and modify it. @@ -59,7 +59,7 @@ Clzip is a lossless data compressor with a user interface similar to the one of gzip or bzip2. Clzip decompresses almost as fast as gzip, compresses most files more than bzip2, and is better than both from a data recovery perspective. Clzip is a clean implementation of the LZMA -(Lempel-Ziv-Markov chain-Algorithm) algorithm. +(Lempel-Ziv-Markov chain-Algorithm) "algorithm". Clzip uses the lzip file format; the files produced by clzip are fully compatible with lzip-1.4 or newer, and can be rescued with lziprecover. @@ -90,6 +90,11 @@ Additionally lzip is copylefted, which guarantees that it will remain free forever. @end itemize +A nice feature of the lzip format is that a corrupt byte is easier to +repair the nearer it is from the beginning of the file. Therefore, with +the help of lziprecover, losing an entire archive just because of a +corrupt byte near the beginning is a thing of the past. + The member trailer stores the 32-bit CRC of the original data, the size of the original data and the size of the member. These values, together with the value remaining in the range decoder and the end-of-stream @@ -103,7 +108,8 @@ wrong. It can't help you recover the original uncompressed data. Clzip uses the same well-defined exit status values used by lzip and bzip2, which makes it safer than compressors returning ambiguous warning -values (like gzip) when it is used as a back end for tar or zutils. +values (like gzip) when it is used as a back end for other programs like +tar or zutils. The amount of memory required for compression is about 1 or 2 times the dictionary size limit (1 if input file size is less than dictionary size |