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Diffstat (limited to 'README')
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@@ -3,19 +3,19 @@ Description Pdlzip is a permissively licensed implementation of the lzip data compressor, intended for those who can't distribute (or even use) GPL licensed Free Software. The name of pdlzip comes from 'public domain lzip'. -Pdlzip is written in C and is compatible with lzip 1.4 or newer. +Pdlzip is written in C. Lzip is a lossless data compressor with a user interface similar to the one -of gzip or bzip2. Lzip uses a simplified form of the 'Lempel-Ziv-Markov -chain-Algorithm' (LZMA) stream format to maximize interoperability. The -maximum dictionary size is 512 MiB so that any lzip file can be decompressed -on 32-bit machines. Lzip provides accurate and robust 3-factor integrity -checking. Lzip can compress about as fast as gzip (lzip -0) or compress most -files more than bzip2 (lzip -9). Decompression speed is intermediate between -gzip and bzip2. Lzip is better than gzip and bzip2 from a data recovery -perspective. Lzip has been designed, written, and tested with great care to -replace gzip and bzip2 as the standard general-purpose compressed format for -Unix-like systems. +of gzip or bzip2. Lzip uses a simplified form of LZMA (Lempel-Ziv-Markov +chain-Algorithm) designed to achieve complete interoperability between +implementations. The maximum dictionary size is 512 MiB so that any lzip +file can be decompressed on 32-bit machines. Lzip provides accurate and +robust 3-factor integrity checking. 'lzip -0' compresses about as fast as +gzip, while 'lzip -9' compresses most files more than bzip2. Decompression +speed is intermediate between gzip and bzip2. Lzip provides better data +recovery capabilities than gzip and bzip2. Lzip has been designed, written, +and tested with great care to replace gzip and bzip2 as general-purpose +compressed format for Unix-like systems. The lzip file format is designed for data sharing and long-term archiving, taking into account both data integrity and decoder availability: @@ -50,12 +50,6 @@ without recompressing. Pdlzip includes public domain compression/decompression code from the LZMA SDK (Software Development Kit) written by Igor Pavlov. -I would not write non-copylefted software unless it is too simple to be -worth copylefting it, but one of the uses of the lzip format is the -interchange of information, and it is therefore desirable that even the -users of the most non-free platforms can share lzip files with everybody -else. - Copyright (C) 2010-2024 Antonio Diaz Diaz. |